net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2024 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
  68                            struct net *netns, struct nlattr **attrs)
  69 {
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id = 0;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         if (rdev) {
  88                 struct wireless_dev *wdev;
  89
  90                 lockdep_assert_held(&rdev->wiphy.mtx);
  91
  92                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  93                         if (have_ifidx && wdev->netdev &&
  94                             wdev->netdev->ifindex == ifidx) {
  95                                 result = wdev;
  96                                 break;
  97                         }
  98                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                 }
 103
 104                 return result ?: ERR_PTR(-ENODEV);
 105         }
 106
 107         ASSERT_RTNL();
 108
 109         for_each_rdev(rdev) {
 110                 struct wireless_dev *wdev;
 111
 112                 if (wiphy_net(&rdev->wiphy) != netns)
 113                         continue;
 114
 115                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 116                         continue;
 117
 118                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
 119                         if (have_ifidx && wdev->netdev &&
 120                             wdev->netdev->ifindex == ifidx) {
 121                                 result = wdev;
 122                                 break;
 123                         }
 124                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 125                                 result = wdev;
 126                                 break;
 127                         }
 128                 }
 129
 130                 if (result)
 131                         break;
 132         }
 133
 134         if (result)
 135                 return result;
 136         return ERR_PTR(-ENODEV);
 137 }
 138
 139 static struct cfg80211_registered_device *
 140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 141 {
 142         struct cfg80211_registered_device *rdev = NULL, *tmp;
 143         struct net_device *netdev;
 144
 145         ASSERT_RTNL();
 146
 147         if (!attrs[NL80211_ATTR_WIPHY] &&
 148             !attrs[NL80211_ATTR_IFINDEX] &&
 149             !attrs[NL80211_ATTR_WDEV])
 150                 return ERR_PTR(-EINVAL);
 151
 152         if (attrs[NL80211_ATTR_WIPHY])
 153                 rdev = cfg80211_rdev_by_wiphy_idx(
 154                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 155
 156         if (attrs[NL80211_ATTR_WDEV]) {
 157                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 158                 struct wireless_dev *wdev;
 159                 bool found = false;
 160
 161                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 162                 if (tmp) {
 163                         /* make sure wdev exists */
 164                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 165                                 if (wdev->identifier != (u32)wdev_id)
 166                                         continue;
 167                                 found = true;
 168                                 break;
 169                         }
 170
 171                         if (!found)
 172                                 tmp = NULL;
 173
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176                         rdev = tmp;
 177                 }
 178         }
 179
 180         if (attrs[NL80211_ATTR_IFINDEX]) {
 181                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 182
 183                 netdev = __dev_get_by_index(netns, ifindex);
 184                 if (netdev) {
 185                         if (netdev->ieee80211_ptr)
 186                                 tmp = wiphy_to_rdev(
 187                                         netdev->ieee80211_ptr->wiphy);
 188                         else
 189                                 tmp = NULL;
 190
 191                         /* not wireless device -- return error */
 192                         if (!tmp)
 193                                 return ERR_PTR(-EINVAL);
 194
 195                         /* mismatch -- return error */
 196                         if (rdev && tmp != rdev)
 197                                 return ERR_PTR(-EINVAL);
 198
 199                         rdev = tmp;
 200                 }
 201         }
 202
 203         if (!rdev)
 204                 return ERR_PTR(-ENODEV);
 205
 206         if (netns != wiphy_net(&rdev->wiphy))
 207                 return ERR_PTR(-ENODEV);
 208
 209         return rdev;
 210 }
 211
 212 /*
 213  * This function returns a pointer to the driver
 214  * that the genl_info item that is passed refers to.
 215  *
 216  * The result of this can be a PTR_ERR and hence must
 217  * be checked with IS_ERR() for errors.
 218  */
 219 static struct cfg80211_registered_device *
 220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 221 {
 222         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 223 }
 224
 225 static int validate_beacon_head(const struct nlattr *attr,
 226                                 struct netlink_ext_ack *extack)
 227 {
 228         const u8 *data = nla_data(attr);
 229         unsigned int len = nla_len(attr);
 230         const struct element *elem;
 231         const struct ieee80211_mgmt *mgmt = (void *)data;
 232         unsigned int fixedlen, hdrlen;
 233         bool s1g_bcn;
 234
 235         if (len < offsetofend(typeof(*mgmt), frame_control))
 236                 goto err;
 237
 238         s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 239         if (s1g_bcn) {
 240                 fixedlen = offsetof(struct ieee80211_ext,
 241                                     u.s1g_beacon.variable);
 242                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 243         } else {
 244                 fixedlen = offsetof(struct ieee80211_mgmt,
 245                                     u.beacon.variable);
 246                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 247         }
 248
 249         if (len < fixedlen)
 250                 goto err;
 251
 252         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 253                 goto err;
 254
 255         data += fixedlen;
 256         len -= fixedlen;
 257
 258         for_each_element(elem, data, len) {
 259                 /* nothing */
 260         }
 261
 262         if (for_each_element_completed(elem, data, len))
 263                 return 0;
 264
 265 err:
 266         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 267         return -EINVAL;
 268 }
 269
 270 static int validate_ie_attr(const struct nlattr *attr,
 271                             struct netlink_ext_ack *extack)
 272 {
 273         const u8 *data = nla_data(attr);
 274         unsigned int len = nla_len(attr);
 275         const struct element *elem;
 276
 277         for_each_element(elem, data, len) {
 278                 /* nothing */
 279         }
 280
 281         if (for_each_element_completed(elem, data, len))
 282                 return 0;
 283
 284         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 285         return -EINVAL;
 286 }
 287
 288 static int validate_he_capa(const struct nlattr *attr,
 289                             struct netlink_ext_ack *extack)
 290 {
 291         if (!ieee80211_he_capa_size_ok(nla_data(attr), nla_len(attr)))
 292                 return -EINVAL;
 293
 294         return 0;
 295 }
 296
 297 /* policy for the attributes */
 298 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 299
 300 static const struct nla_policy
 301 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 302         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 303         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 304                                         .len = U8_MAX },
 305         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 306                                              .len = U8_MAX },
 307 };
 308
 309 static const struct nla_policy
 310 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 311         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 312         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 313         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 314                 NLA_POLICY_MAX(NLA_U8, 15),
 315         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 316         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 317                 NLA_POLICY_MAX(NLA_U8, 15),
 318         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 319                 NLA_POLICY_MAX(NLA_U8, 31),
 320         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 321         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 322         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 323         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 324         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 325         [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
 326         [NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR] = { .type = NLA_U8 },
 327 };
 328
 329 static const struct nla_policy
 330 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 331         [NL80211_PMSR_TYPE_FTM] =
 332                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 333 };
 334
 335 static const struct nla_policy
 336 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 337         [NL80211_PMSR_REQ_ATTR_DATA] =
 338                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 339         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 340 };
 341
 342 static const struct nla_policy
 343 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 344         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 345         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 346         [NL80211_PMSR_PEER_ATTR_REQ] =
 347                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 348         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 349 };
 350
 351 static const struct nla_policy
 352 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 353         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 354         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 355         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 356         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 357         [NL80211_PMSR_ATTR_PEERS] =
 358                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 359 };
 360
 361 static const struct nla_policy
 362 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 363         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 364                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 365         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 366                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 367         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 368                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 369         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 370                 NLA_POLICY_EXACT_LEN(8),
 371         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 372                 NLA_POLICY_EXACT_LEN(8),
 373         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 374 };
 375
 376 static const struct nla_policy
 377 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 378         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 379         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 380         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 381 };
 382
 383 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 384         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 385                                     .len = NL80211_MAX_SUPP_RATES },
 386         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 387                                 .len = NL80211_MAX_SUPP_HT_RATES },
 388         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 389         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 390         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 391         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 392                                                    NL80211_RATE_INFO_HE_GI_0_8,
 393                                                    NL80211_RATE_INFO_HE_GI_3_2),
 394         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 395                                                    NL80211_RATE_INFO_HE_1XLTF,
 396                                                    NL80211_RATE_INFO_HE_4XLTF),
 397 };
 398
 399 static const struct nla_policy
 400 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 401         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 402         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 403         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 404         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 405         [NL80211_TID_CONFIG_ATTR_NOACK] =
 406                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 407         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 408         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 409         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 410                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 411         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 412                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 413         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 414                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 415         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 416                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 417         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 418                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 419 };
 420
 421 static const struct nla_policy
 422 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 423         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 424         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 425         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 426                         NLA_POLICY_RANGE(NLA_BINARY,
 427                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 428                                          IEEE80211_MAX_DATA_LEN),
 429 };
 430
 431 static const struct nla_policy
 432 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 433         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 434         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 435                                                        .len = IEEE80211_MAX_DATA_LEN }
 436 };
 437
 438 static const struct nla_policy
 439 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 440         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 441         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 442 };
 443
 444 static const struct nla_policy
 445 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 446         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 447         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 448 };
 449
 450 static const struct nla_policy
 451 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
 452         [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
 453         [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
 454                                                 NLA_POLICY_MIN(NLA_U8, 1),
 455         [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
 456         [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
 457         [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
 458 };
 459
 460 static const struct nla_policy
 461 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
 462         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
 463         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
 464 };
 465
 466 static const struct netlink_range_validation nl80211_punct_bitmap_range = {
 467         .min = 0,
 468         .max = 0xffff,
 469 };
 470
 471 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 472         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 473         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 474         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 475                                       .len = 20-1 },
 476         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 477
 478         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 479         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 480         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 481                                                 NL80211_EDMG_CHANNELS_MIN,
 482                                                 NL80211_EDMG_CHANNELS_MAX),
 483         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 484                                                 NL80211_EDMG_BW_CONFIG_MIN,
 485                                                 NL80211_EDMG_BW_CONFIG_MAX),
 486
 487         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 488         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 489         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 490         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 491
 492         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 493         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 494         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 495         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 496         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 497         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 498
 499         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 500         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 501         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 502
 503         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 504         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 505
 506         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 507         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 508                                     .len = WLAN_MAX_KEY_LEN },
 509         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 510         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 511         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 512         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 513         [NL80211_ATTR_KEY_TYPE] =
 514                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 515
 516         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 517         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 518         [NL80211_ATTR_BEACON_HEAD] =
 519                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 520                                        IEEE80211_MAX_DATA_LEN),
 521         [NL80211_ATTR_BEACON_TAIL] =
 522                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 523                                        IEEE80211_MAX_DATA_LEN),
 524         [NL80211_ATTR_STA_AID] =
 525                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 526         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 527         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 528         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 529                                                .len = NL80211_MAX_SUPP_RATES },
 530         [NL80211_ATTR_STA_PLINK_ACTION] =
 531                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 532         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 533                 NLA_POLICY_RANGE(NLA_U8,
 534                                  NL80211_TX_POWER_AUTOMATIC,
 535                                  NL80211_TX_POWER_FIXED),
 536         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 537         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 538         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 539         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 540                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 541         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 542
 543         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 544         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 545         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 546
 547         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 548         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 549         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 550         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 551                                            .len = NL80211_MAX_SUPP_RATES },
 552         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 553
 554         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 555         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 556
 557         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 558
 559         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 560         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 561                                                    validate_ie_attr,
 562                                                    IEEE80211_MAX_DATA_LEN),
 563         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 564         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 565
 566         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 567                                 .len = IEEE80211_MAX_SSID_LEN },
 568         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 569         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 570         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 571         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 572         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 573                                                   NL80211_MFP_NO,
 574                                                   NL80211_MFP_OPTIONAL),
 575         [NL80211_ATTR_STA_FLAGS2] =
 576                 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
 577         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 578         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 579         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 580         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 581         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 582         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 583         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 584         [NL80211_ATTR_WPA_VERSIONS] =
 585                 NLA_POLICY_RANGE(NLA_U32, 0,
 586                                  NL80211_WPA_VERSION_1 |
 587                                  NL80211_WPA_VERSION_2 |
 588                                  NL80211_WPA_VERSION_3),
 589         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 590         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 591         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 592         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 593         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 594         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 595         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 596                                  .len = IEEE80211_MAX_DATA_LEN },
 597         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 598         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 599                                                    NL80211_PS_DISABLED,
 600                                                    NL80211_PS_ENABLED),
 601         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 602         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 603         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 604         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 605         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 606         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 607         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 608         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 609         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 610         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 611         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 612         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 613         [NL80211_ATTR_STA_PLINK_STATE] =
 614                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 615         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 616         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 617         [NL80211_ATTR_MESH_PEER_AID] =
 618                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 619         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 620         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 621         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 622         [NL80211_ATTR_HIDDEN_SSID] =
 623                 NLA_POLICY_RANGE(NLA_U32,
 624                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 625                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 626         [NL80211_ATTR_IE_PROBE_RESP] =
 627                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 628                                        IEEE80211_MAX_DATA_LEN),
 629         [NL80211_ATTR_IE_ASSOC_RESP] =
 630                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 631                                        IEEE80211_MAX_DATA_LEN),
 632         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 633         [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
 634         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 635         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 636         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 637         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 638         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 639         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 640         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 641         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 642         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 643         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 644                                       .len = IEEE80211_MAX_DATA_LEN },
 645         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 646         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 647         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 648                 .len = NL80211_HT_CAPABILITY_LEN
 649         },
 650         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 651         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 652         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 653         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 654         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 655
 656         /* need to include at least Auth Transaction and Status Code */
 657         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 658
 659         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 660         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 661         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 662         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 663         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 664                 NLA_POLICY_RANGE(NLA_U32,
 665                                  NL80211_MESH_POWER_UNKNOWN + 1,
 666                                  NL80211_MESH_POWER_MAX),
 667         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 668         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 669         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 670         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 671         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 672         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 673         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 674                 .len = NL80211_VHT_CAPABILITY_LEN,
 675         },
 676         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 677         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 678                                   .len = IEEE80211_MAX_DATA_LEN },
 679         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 680         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 681                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 682         [NL80211_ATTR_PEER_AID] =
 683                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 684         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 685         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 686         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 687         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 688         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 689         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 690         /*
 691          * The value of the Length field of the Supported Operating
 692          * Classes element is between 2 and 253.
 693          */
 694         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 695                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 696         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 697         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 698         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 699         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 700         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 701         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 702                                                   IEEE80211_QOS_MAP_LEN_MIN,
 703                                                   IEEE80211_QOS_MAP_LEN_MAX),
 704         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 705         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 706         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 707         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 708         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 709         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 710         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 711         [NL80211_ATTR_USER_PRIO] =
 712                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 713         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 714         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 715         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 716         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 717         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 718         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 719         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 720         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 721         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 722         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 723         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 724                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 725         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 726                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 727         },
 728         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 729         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 730         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 731         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 732         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 733                                     .len = FILS_MAX_KEK_LEN },
 734         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 735         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 736         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 737         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 738         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 739                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 740         },
 741         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 742         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 743                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 744         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 745                                           .len = FILS_ERP_MAX_REALM_LEN },
 746         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 747         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 748                                         .len = FILS_ERP_MAX_RRK_LEN },
 749         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 750         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 751         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 752         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 753         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 754
 755         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 756         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 757         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 758         [NL80211_ATTR_HE_CAPABILITY] =
 759                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
 760                                        NL80211_HE_MAX_CAPABILITY_LEN),
 761         [NL80211_ATTR_FTM_RESPONDER] =
 762                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 763         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 764         [NL80211_ATTR_PEER_MEASUREMENTS] =
 765                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 766         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 767         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 768                                         .len = SAE_PASSWORD_MAX_LEN },
 769         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 770         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 771         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 772         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 773         [NL80211_ATTR_TID_CONFIG] =
 774                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 775         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 776         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 777         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 778         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 779         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 780         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 781         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 782                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 783         [NL80211_ATTR_FILS_DISCOVERY] =
 784                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 785         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 786                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 787         [NL80211_ATTR_S1G_CAPABILITY] =
 788                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 789         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 790                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 791         [NL80211_ATTR_SAE_PWE] =
 792                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 793                                  NL80211_SAE_PWE_BOTH),
 794         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 795         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 796         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 797         [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
 798         [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
 799         [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
 800         [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
 801         [NL80211_ATTR_MBSSID_CONFIG] =
 802                         NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
 803         [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
 804         [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
 805         [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
 806         [NL80211_ATTR_EHT_CAPABILITY] =
 807                 NLA_POLICY_RANGE(NLA_BINARY,
 808                                  NL80211_EHT_MIN_CAPABILITY_LEN,
 809                                  NL80211_EHT_MAX_CAPABILITY_LEN),
 810         [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
 811         [NL80211_ATTR_MLO_LINKS] =
 812                 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
 813         [NL80211_ATTR_MLO_LINK_ID] =
 814                 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
 815         [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
 816         [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 817         [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
 818         [NL80211_ATTR_PUNCT_BITMAP] =
 819                 NLA_POLICY_FULL_RANGE(NLA_U32, &nl80211_punct_bitmap_range),
 820
 821         [NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS] = { .type = NLA_U16 },
 822         [NL80211_ATTR_HW_TIMESTAMP_ENABLED] = { .type = NLA_FLAG },
 823         [NL80211_ATTR_EMA_RNR_ELEMS] = { .type = NLA_NESTED },
 824         [NL80211_ATTR_MLO_LINK_DISABLED] = { .type = NLA_FLAG },
 825         [NL80211_ATTR_BSS_DUMP_INCLUDE_USE_DATA] = { .type = NLA_FLAG },
 826         [NL80211_ATTR_MLO_TTLM_DLINK] = NLA_POLICY_EXACT_LEN(sizeof(u16) * 8),
 827         [NL80211_ATTR_MLO_TTLM_ULINK] = NLA_POLICY_EXACT_LEN(sizeof(u16) * 8),
 828         [NL80211_ATTR_ASSOC_SPP_AMSDU] = { .type = NLA_FLAG },
 829 };
 830
 831 /* policy for the key attributes */
 832 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 833         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 834         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 835         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 836         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 837         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 838         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 839         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 840         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 841         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 842 };
 843
 844 /* policy for the key default flags */
 845 static const struct nla_policy
 846 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 847         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 848         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 849 };
 850
 851 #ifdef CONFIG_PM
 852 /* policy for WoWLAN attributes */
 853 static const struct nla_policy
 854 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 855         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 856         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 857         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 858         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 859         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 860         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 861         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 862         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 863         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 864         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 865 };
 866
 867 static const struct nla_policy
 868 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 869         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 870         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 871         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 872         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 873         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 874         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 875         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 876                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 877         },
 878         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 879                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 880         },
 881         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 882         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 883         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 884 };
 885 #endif /* CONFIG_PM */
 886
 887 /* policy for coalesce rule attributes */
 888 static const struct nla_policy
 889 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 890         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 891         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 892                 NLA_POLICY_RANGE(NLA_U32,
 893                                  NL80211_COALESCE_CONDITION_MATCH,
 894                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 895         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 896 };
 897
 898 /* policy for GTK rekey offload attributes */
 899 static const struct nla_policy
 900 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 901         [NL80211_REKEY_DATA_KEK] = {
 902                 .type = NLA_BINARY,
 903                 .len = NL80211_KEK_EXT_LEN
 904         },
 905         [NL80211_REKEY_DATA_KCK] = {
 906                 .type = NLA_BINARY,
 907                 .len = NL80211_KCK_EXT_LEN_32
 908         },
 909         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 910         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 911 };
 912
 913 static const struct nla_policy
 914 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 915         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 916                                                  .len = IEEE80211_MAX_SSID_LEN },
 917         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 918         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 919 };
 920
 921 static const struct nla_policy
 922 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 923         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 924         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 925 };
 926
 927 static const struct nla_policy
 928 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 929         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 930         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 931         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 932                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 933         },
 934 };
 935
 936 /* policy for NAN function attributes */
 937 static const struct nla_policy
 938 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 939         [NL80211_NAN_FUNC_TYPE] =
 940                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 941         [NL80211_NAN_FUNC_SERVICE_ID] = {
 942                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 943         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 944         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 945         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 946         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 947         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 948         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 949         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 950         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 951         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 952                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 953         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 954         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 955         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 956         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 957         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 958 };
 959
 960 /* policy for Service Response Filter attributes */
 961 static const struct nla_policy
 962 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 963         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 964         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 965                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 966         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 967         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 968 };
 969
 970 /* policy for packet pattern attributes */
 971 static const struct nla_policy
 972 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 973         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 974         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 975         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 976 };
 977
 978 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 979                                      struct cfg80211_registered_device **rdev,
 980                                      struct wireless_dev **wdev,
 981                                      struct nlattr **attrbuf)
 982 {
 983         int err;
 984
 985         if (!cb->args[0]) {
 986                 struct nlattr **attrbuf_free = NULL;
 987
 988                 if (!attrbuf) {
 989                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 990                                           GFP_KERNEL);
 991                         if (!attrbuf)
 992                                 return -ENOMEM;
 993                         attrbuf_free = attrbuf;
 994                 }
 995
 996                 err = nlmsg_parse_deprecated(cb->nlh,
 997                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 998                                              attrbuf, nl80211_fam.maxattr,
 999                                              nl80211_policy, NULL);
1000                 if (err) {
1001                         kfree(attrbuf_free);
1002                         return err;
1003                 }
1004
1005                 rtnl_lock();
1006                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
1007                                                    attrbuf);
1008                 kfree(attrbuf_free);
1009                 if (IS_ERR(*wdev)) {
1010                         rtnl_unlock();
1011                         return PTR_ERR(*wdev);
1012                 }
1013                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1014                 mutex_lock(&(*rdev)->wiphy.mtx);
1015                 rtnl_unlock();
1016                 /* 0 is the first index - add 1 to parse only once */
1017                 cb->args[0] = (*rdev)->wiphy_idx + 1;
1018                 cb->args[1] = (*wdev)->identifier;
1019         } else {
1020                 /* subtract the 1 again here */
1021                 struct wiphy *wiphy;
1022                 struct wireless_dev *tmp;
1023
1024                 rtnl_lock();
1025                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1026                 if (!wiphy) {
1027                         rtnl_unlock();
1028                         return -ENODEV;
1029                 }
1030                 *rdev = wiphy_to_rdev(wiphy);
1031                 *wdev = NULL;
1032
1033                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1034                         if (tmp->identifier == cb->args[1]) {
1035                                 *wdev = tmp;
1036                                 break;
1037                         }
1038                 }
1039
1040                 if (!*wdev) {
1041                         rtnl_unlock();
1042                         return -ENODEV;
1043                 }
1044                 mutex_lock(&(*rdev)->wiphy.mtx);
1045                 rtnl_unlock();
1046         }
1047
1048         return 0;
1049 }
1050
1051 /* message building helper */
1052 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1053                      int flags, u8 cmd)
1054 {
1055         /* since there is no private header just add the generic one */
1056         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1057 }
1058
1059 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1060                                      const struct ieee80211_reg_rule *rule)
1061 {
1062         int j;
1063         struct nlattr *nl_wmm_rules =
1064                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1065
1066         if (!nl_wmm_rules)
1067                 goto nla_put_failure;
1068
1069         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1070                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1071
1072                 if (!nl_wmm_rule)
1073                         goto nla_put_failure;
1074
1075                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1076                                 rule->wmm_rule.client[j].cw_min) ||
1077                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1078                                 rule->wmm_rule.client[j].cw_max) ||
1079                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1080                                rule->wmm_rule.client[j].aifsn) ||
1081                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1082                                 rule->wmm_rule.client[j].cot))
1083                         goto nla_put_failure;
1084
1085                 nla_nest_end(msg, nl_wmm_rule);
1086         }
1087         nla_nest_end(msg, nl_wmm_rules);
1088
1089         return 0;
1090
1091 nla_put_failure:
1092         return -ENOBUFS;
1093 }
1094
1095 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1096                                    struct ieee80211_channel *chan,
1097                                    bool large)
1098 {
1099         /* Some channels must be completely excluded from the
1100          * list to protect old user-space tools from breaking
1101          */
1102         if (!large && chan->flags &
1103             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1104                 return 0;
1105         if (!large && chan->freq_offset)
1106                 return 0;
1107
1108         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1109                         chan->center_freq))
1110                 goto nla_put_failure;
1111
1112         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1113                 goto nla_put_failure;
1114
1115         if ((chan->flags & IEEE80211_CHAN_PSD) &&
1116             nla_put_s8(msg, NL80211_FREQUENCY_ATTR_PSD, chan->psd))
1117                 goto nla_put_failure;
1118
1119         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1120             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1121                 goto nla_put_failure;
1122         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1123                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1124                         goto nla_put_failure;
1125                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1126                         goto nla_put_failure;
1127         }
1128         if (chan->flags & IEEE80211_CHAN_RADAR) {
1129                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1130                         goto nla_put_failure;
1131                 if (large) {
1132                         u32 time;
1133
1134                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1135
1136                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1137                                         chan->dfs_state))
1138                                 goto nla_put_failure;
1139                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1140                                         time))
1141                                 goto nla_put_failure;
1142                         if (nla_put_u32(msg,
1143                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1144                                         chan->dfs_cac_ms))
1145                                 goto nla_put_failure;
1146                 }
1147         }
1148
1149         if (large) {
1150                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1151                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1152                         goto nla_put_failure;
1153                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1154                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1155                         goto nla_put_failure;
1156                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1157                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1158                         goto nla_put_failure;
1159                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1160                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1161                         goto nla_put_failure;
1162                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1163                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1164                         goto nla_put_failure;
1165                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1166                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1167                         goto nla_put_failure;
1168                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1169                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1170                         goto nla_put_failure;
1171                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1172                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1173                         goto nla_put_failure;
1174                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1175                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1176                         goto nla_put_failure;
1177                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1178                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1179                         goto nla_put_failure;
1180                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1181                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1182                         goto nla_put_failure;
1183                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1184                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1185                         goto nla_put_failure;
1186                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1187                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1188                         goto nla_put_failure;
1189                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1190                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1191                         goto nla_put_failure;
1192                 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1193                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1194                         goto nla_put_failure;
1195                 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1196                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1197                         goto nla_put_failure;
1198                 if ((chan->flags & IEEE80211_CHAN_DFS_CONCURRENT) &&
1199                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DFS_CONCURRENT))
1200                         goto nla_put_failure;
1201                 if ((chan->flags & IEEE80211_CHAN_NO_6GHZ_VLP_CLIENT) &&
1202                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_6GHZ_VLP_CLIENT))
1203                         goto nla_put_failure;
1204                 if ((chan->flags & IEEE80211_CHAN_NO_6GHZ_AFC_CLIENT) &&
1205                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_6GHZ_AFC_CLIENT))
1206                         goto nla_put_failure;
1207         }
1208
1209         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1210                         DBM_TO_MBM(chan->max_power)))
1211                 goto nla_put_failure;
1212
1213         if (large) {
1214                 const struct ieee80211_reg_rule *rule =
1215                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1216
1217                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1218                         if (nl80211_msg_put_wmm_rules(msg, rule))
1219                                 goto nla_put_failure;
1220                 }
1221         }
1222
1223         return 0;
1224
1225  nla_put_failure:
1226         return -ENOBUFS;
1227 }
1228
1229 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1230                                   struct cfg80211_txq_stats *txqstats,
1231                                   int attrtype)
1232 {
1233         struct nlattr *txqattr;
1234
1235 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1236         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1237             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1238                 return false;                                             \
1239         } while (0)
1240
1241         txqattr = nla_nest_start_noflag(msg, attrtype);
1242         if (!txqattr)
1243                 return false;
1244
1245         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1246         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1247         PUT_TXQVAL_U32(FLOWS, flows);
1248         PUT_TXQVAL_U32(DROPS, drops);
1249         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1250         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1251         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1252         PUT_TXQVAL_U32(COLLISIONS, collisions);
1253         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1254         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1255         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1256         nla_nest_end(msg, txqattr);
1257
1258 #undef PUT_TXQVAL_U32
1259         return true;
1260 }
1261
1262 /* netlink command implementations */
1263
1264 /**
1265  * nl80211_link_id - return link ID
1266  * @attrs: attributes to look at
1267  *
1268  * Returns: the link ID or 0 if not given
1269  *
1270  * Note this function doesn't do any validation of the link
1271  * ID validity wrt. links that were actually added, so it must
1272  * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1273  * or if additional validation is done.
1274  */
1275 static unsigned int nl80211_link_id(struct nlattr **attrs)
1276 {
1277         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1278
1279         if (!linkid)
1280                 return 0;
1281
1282         return nla_get_u8(linkid);
1283 }
1284
1285 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1286 {
1287         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1288
1289         if (!linkid)
1290                 return -1;
1291
1292         return nla_get_u8(linkid);
1293 }
1294
1295 struct key_parse {
1296         struct key_params p;
1297         int idx;
1298         int type;
1299         bool def, defmgmt, defbeacon;
1300         bool def_uni, def_multi;
1301 };
1302
1303 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1304                                  struct key_parse *k)
1305 {
1306         struct nlattr *tb[NL80211_KEY_MAX + 1];
1307         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1308                                               nl80211_key_policy,
1309                                               info->extack);
1310         if (err)
1311                 return err;
1312
1313         k->def = !!tb[NL80211_KEY_DEFAULT];
1314         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1315         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1316
1317         if (k->def) {
1318                 k->def_uni = true;
1319                 k->def_multi = true;
1320         }
1321         if (k->defmgmt || k->defbeacon)
1322                 k->def_multi = true;
1323
1324         if (tb[NL80211_KEY_IDX])
1325                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1326
1327         if (tb[NL80211_KEY_DATA]) {
1328                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1329                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1330         }
1331
1332         if (tb[NL80211_KEY_SEQ]) {
1333                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1334                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1335         }
1336
1337         if (tb[NL80211_KEY_CIPHER])
1338                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1339
1340         if (tb[NL80211_KEY_TYPE])
1341                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1342
1343         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1344                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1345
1346                 err = nla_parse_nested_deprecated(kdt,
1347                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1348                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1349                                                   nl80211_key_default_policy,
1350                                                   info->extack);
1351                 if (err)
1352                         return err;
1353
1354                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1355                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1356         }
1357
1358         if (tb[NL80211_KEY_MODE])
1359                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1360
1361         return 0;
1362 }
1363
1364 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1365 {
1366         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1367                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1368                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1369         }
1370
1371         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1372                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1373                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1374         }
1375
1376         if (info->attrs[NL80211_ATTR_KEY_IDX])
1377                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1378
1379         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1380                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1381
1382         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1383         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1384
1385         if (k->def) {
1386                 k->def_uni = true;
1387                 k->def_multi = true;
1388         }
1389         if (k->defmgmt)
1390                 k->def_multi = true;
1391
1392         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1393                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1394
1395         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1396                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1397                 int err = nla_parse_nested_deprecated(kdt,
1398                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1399                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1400                                                       nl80211_key_default_policy,
1401                                                       info->extack);
1402                 if (err)
1403                         return err;
1404
1405                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1406                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1407         }
1408
1409         return 0;
1410 }
1411
1412 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1413 {
1414         int err;
1415
1416         memset(k, 0, sizeof(*k));
1417         k->idx = -1;
1418         k->type = -1;
1419
1420         if (info->attrs[NL80211_ATTR_KEY])
1421                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1422         else
1423                 err = nl80211_parse_key_old(info, k);
1424
1425         if (err)
1426                 return err;
1427
1428         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1429             (k->defbeacon ? 1 : 0) > 1) {
1430                 GENL_SET_ERR_MSG(info,
1431                                  "key with multiple default flags is invalid");
1432                 return -EINVAL;
1433         }
1434
1435         if (k->defmgmt || k->defbeacon) {
1436                 if (k->def_uni || !k->def_multi) {
1437                         GENL_SET_ERR_MSG(info,
1438                                          "defmgmt/defbeacon key must be mcast");
1439                         return -EINVAL;
1440                 }
1441         }
1442
1443         if (k->idx != -1) {
1444                 if (k->defmgmt) {
1445                         if (k->idx < 4 || k->idx > 5) {
1446                                 GENL_SET_ERR_MSG(info,
1447                                                  "defmgmt key idx not 4 or 5");
1448                                 return -EINVAL;
1449                         }
1450                 } else if (k->defbeacon) {
1451                         if (k->idx < 6 || k->idx > 7) {
1452                                 GENL_SET_ERR_MSG(info,
1453                                                  "defbeacon key idx not 6 or 7");
1454                                 return -EINVAL;
1455                         }
1456                 } else if (k->def) {
1457                         if (k->idx < 0 || k->idx > 3) {
1458                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1459                                 return -EINVAL;
1460                         }
1461                 } else {
1462                         if (k->idx < 0 || k->idx > 7) {
1463                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1464                                 return -EINVAL;
1465                         }
1466                 }
1467         }
1468
1469         return 0;
1470 }
1471
1472 static struct cfg80211_cached_keys *
1473 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1474                        struct genl_info *info, bool *no_ht)
1475 {
1476         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1477         struct key_parse parse;
1478         struct nlattr *key;
1479         struct cfg80211_cached_keys *result;
1480         int rem, err, def = 0;
1481         bool have_key = false;
1482
1483         nla_for_each_nested(key, keys, rem) {
1484                 have_key = true;
1485                 break;
1486         }
1487
1488         if (!have_key)
1489                 return NULL;
1490
1491         result = kzalloc(sizeof(*result), GFP_KERNEL);
1492         if (!result)
1493                 return ERR_PTR(-ENOMEM);
1494
1495         result->def = -1;
1496
1497         nla_for_each_nested(key, keys, rem) {
1498                 memset(&parse, 0, sizeof(parse));
1499                 parse.idx = -1;
1500
1501                 err = nl80211_parse_key_new(info, key, &parse);
1502                 if (err)
1503                         goto error;
1504                 err = -EINVAL;
1505                 if (!parse.p.key)
1506                         goto error;
1507                 if (parse.idx < 0 || parse.idx > 3) {
1508                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1509                         goto error;
1510                 }
1511                 if (parse.def) {
1512                         if (def) {
1513                                 GENL_SET_ERR_MSG(info,
1514                                                  "only one key can be default");
1515                                 goto error;
1516                         }
1517                         def = 1;
1518                         result->def = parse.idx;
1519                         if (!parse.def_uni || !parse.def_multi)
1520                                 goto error;
1521                 } else if (parse.defmgmt)
1522                         goto error;
1523                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1524                                                      parse.idx, false, NULL);
1525                 if (err)
1526                         goto error;
1527                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1528                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1529                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1530                         err = -EINVAL;
1531                         goto error;
1532                 }
1533                 result->params[parse.idx].cipher = parse.p.cipher;
1534                 result->params[parse.idx].key_len = parse.p.key_len;
1535                 result->params[parse.idx].key = result->data[parse.idx];
1536                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1537
1538                 /* must be WEP key if we got here */
1539                 if (no_ht)
1540                         *no_ht = true;
1541         }
1542
1543         if (result->def < 0) {
1544                 err = -EINVAL;
1545                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1546                 goto error;
1547         }
1548
1549         return result;
1550  error:
1551         kfree(result);
1552         return ERR_PTR(err);
1553 }
1554
1555 static int nl80211_key_allowed(struct wireless_dev *wdev)
1556 {
1557         lockdep_assert_wiphy(wdev->wiphy);
1558
1559         switch (wdev->iftype) {
1560         case NL80211_IFTYPE_AP:
1561         case NL80211_IFTYPE_AP_VLAN:
1562         case NL80211_IFTYPE_P2P_GO:
1563         case NL80211_IFTYPE_MESH_POINT:
1564                 break;
1565         case NL80211_IFTYPE_ADHOC:
1566                 if (wdev->u.ibss.current_bss)
1567                         return 0;
1568                 return -ENOLINK;
1569         case NL80211_IFTYPE_STATION:
1570         case NL80211_IFTYPE_P2P_CLIENT:
1571                 if (wdev->connected)
1572                         return 0;
1573                 return -ENOLINK;
1574         case NL80211_IFTYPE_NAN:
1575                 if (wiphy_ext_feature_isset(wdev->wiphy,
1576                                             NL80211_EXT_FEATURE_SECURE_NAN))
1577                         return 0;
1578                 return -EINVAL;
1579         case NL80211_IFTYPE_UNSPECIFIED:
1580         case NL80211_IFTYPE_OCB:
1581         case NL80211_IFTYPE_MONITOR:
1582         case NL80211_IFTYPE_P2P_DEVICE:
1583         case NL80211_IFTYPE_WDS:
1584         case NUM_NL80211_IFTYPES:
1585                 return -EINVAL;
1586         }
1587
1588         return 0;
1589 }
1590
1591 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1592                                                         u32 freq)
1593 {
1594         struct ieee80211_channel *chan;
1595
1596         chan = ieee80211_get_channel_khz(wiphy, freq);
1597         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1598                 return NULL;
1599         return chan;
1600 }
1601
1602 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1603 {
1604         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1605         int i;
1606
1607         if (!nl_modes)
1608                 goto nla_put_failure;
1609
1610         i = 0;
1611         while (ifmodes) {
1612                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1613                         goto nla_put_failure;
1614                 ifmodes >>= 1;
1615                 i++;
1616         }
1617
1618         nla_nest_end(msg, nl_modes);
1619         return 0;
1620
1621 nla_put_failure:
1622         return -ENOBUFS;
1623 }
1624
1625 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1626                                           struct sk_buff *msg,
1627                                           bool large)
1628 {
1629         struct nlattr *nl_combis;
1630         int i, j;
1631
1632         nl_combis = nla_nest_start_noflag(msg,
1633                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1634         if (!nl_combis)
1635                 goto nla_put_failure;
1636
1637         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1638                 const struct ieee80211_iface_combination *c;
1639                 struct nlattr *nl_combi, *nl_limits;
1640
1641                 c = &wiphy->iface_combinations[i];
1642
1643                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1644                 if (!nl_combi)
1645                         goto nla_put_failure;
1646
1647                 nl_limits = nla_nest_start_noflag(msg,
1648                                                   NL80211_IFACE_COMB_LIMITS);
1649                 if (!nl_limits)
1650                         goto nla_put_failure;
1651
1652                 for (j = 0; j < c->n_limits; j++) {
1653                         struct nlattr *nl_limit;
1654
1655                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1656                         if (!nl_limit)
1657                                 goto nla_put_failure;
1658                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1659                                         c->limits[j].max))
1660                                 goto nla_put_failure;
1661                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1662                                                 c->limits[j].types))
1663                                 goto nla_put_failure;
1664                         nla_nest_end(msg, nl_limit);
1665                 }
1666
1667                 nla_nest_end(msg, nl_limits);
1668
1669                 if (c->beacon_int_infra_match &&
1670                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1671                         goto nla_put_failure;
1672                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1673                                 c->num_different_channels) ||
1674                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1675                                 c->max_interfaces))
1676                         goto nla_put_failure;
1677                 if (large &&
1678                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1679                                 c->radar_detect_widths) ||
1680                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1681                                 c->radar_detect_regions)))
1682                         goto nla_put_failure;
1683                 if (c->beacon_int_min_gcd &&
1684                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1685                                 c->beacon_int_min_gcd))
1686                         goto nla_put_failure;
1687
1688                 nla_nest_end(msg, nl_combi);
1689         }
1690
1691         nla_nest_end(msg, nl_combis);
1692
1693         return 0;
1694 nla_put_failure:
1695         return -ENOBUFS;
1696 }
1697
1698 #ifdef CONFIG_PM
1699 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1700                                         struct sk_buff *msg)
1701 {
1702         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1703         struct nlattr *nl_tcp;
1704
1705         if (!tcp)
1706                 return 0;
1707
1708         nl_tcp = nla_nest_start_noflag(msg,
1709                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1710         if (!nl_tcp)
1711                 return -ENOBUFS;
1712
1713         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1714                         tcp->data_payload_max))
1715                 return -ENOBUFS;
1716
1717         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1718                         tcp->data_payload_max))
1719                 return -ENOBUFS;
1720
1721         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1722                 return -ENOBUFS;
1723
1724         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1725                                 sizeof(*tcp->tok), tcp->tok))
1726                 return -ENOBUFS;
1727
1728         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1729                         tcp->data_interval_max))
1730                 return -ENOBUFS;
1731
1732         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1733                         tcp->wake_payload_max))
1734                 return -ENOBUFS;
1735
1736         nla_nest_end(msg, nl_tcp);
1737         return 0;
1738 }
1739
1740 static int nl80211_send_wowlan(struct sk_buff *msg,
1741                                struct cfg80211_registered_device *rdev,
1742                                bool large)
1743 {
1744         struct nlattr *nl_wowlan;
1745
1746         if (!rdev->wiphy.wowlan)
1747                 return 0;
1748
1749         nl_wowlan = nla_nest_start_noflag(msg,
1750                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1751         if (!nl_wowlan)
1752                 return -ENOBUFS;
1753
1754         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1755              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1756             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1757              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1758             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1759              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1760             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1761              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1762             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1763              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1764             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1765              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1766             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1767              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1768             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1769              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1770                 return -ENOBUFS;
1771
1772         if (rdev->wiphy.wowlan->n_patterns) {
1773                 struct nl80211_pattern_support pat = {
1774                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1775                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1776                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1777                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1778                 };
1779
1780                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1781                             sizeof(pat), &pat))
1782                         return -ENOBUFS;
1783         }
1784
1785         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1786             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1787                         rdev->wiphy.wowlan->max_nd_match_sets))
1788                 return -ENOBUFS;
1789
1790         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1791                 return -ENOBUFS;
1792
1793         nla_nest_end(msg, nl_wowlan);
1794
1795         return 0;
1796 }
1797 #endif
1798
1799 static int nl80211_send_coalesce(struct sk_buff *msg,
1800                                  struct cfg80211_registered_device *rdev)
1801 {
1802         struct nl80211_coalesce_rule_support rule;
1803
1804         if (!rdev->wiphy.coalesce)
1805                 return 0;
1806
1807         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1808         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1809         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1810         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1811         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1812         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1813
1814         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1815                 return -ENOBUFS;
1816
1817         return 0;
1818 }
1819
1820 static int
1821 nl80211_send_iftype_data(struct sk_buff *msg,
1822                          const struct ieee80211_supported_band *sband,
1823                          const struct ieee80211_sband_iftype_data *iftdata)
1824 {
1825         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1826         const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1827
1828         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1829                                 iftdata->types_mask))
1830                 return -ENOBUFS;
1831
1832         if (he_cap->has_he) {
1833                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1834                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1835                             he_cap->he_cap_elem.mac_cap_info) ||
1836                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1837                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1838                             he_cap->he_cap_elem.phy_cap_info) ||
1839                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1840                             sizeof(he_cap->he_mcs_nss_supp),
1841                             &he_cap->he_mcs_nss_supp) ||
1842                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1843                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1844                         return -ENOBUFS;
1845         }
1846
1847         if (eht_cap->has_eht && he_cap->has_he) {
1848                 u8 mcs_nss_size, ppe_thresh_size;
1849                 u16 ppe_thres_hdr;
1850                 bool is_ap;
1851
1852                 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1853                         iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1854
1855                 mcs_nss_size =
1856                         ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1857                                                    &eht_cap->eht_cap_elem,
1858                                                    is_ap);
1859
1860                 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1861                 ppe_thresh_size =
1862                         ieee80211_eht_ppe_size(ppe_thres_hdr,
1863                                                eht_cap->eht_cap_elem.phy_cap_info);
1864
1865                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1866                             sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1867                             eht_cap->eht_cap_elem.mac_cap_info) ||
1868                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1869                             sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1870                             eht_cap->eht_cap_elem.phy_cap_info) ||
1871                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1872                             mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1873                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1874                             ppe_thresh_size, eht_cap->eht_ppe_thres))
1875                         return -ENOBUFS;
1876         }
1877
1878         if (sband->band == NL80211_BAND_6GHZ &&
1879             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1880                     sizeof(iftdata->he_6ghz_capa),
1881                     &iftdata->he_6ghz_capa))
1882                 return -ENOBUFS;
1883
1884         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1885             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1886                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1887                 return -ENOBUFS;
1888
1889         return 0;
1890 }
1891
1892 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1893                                       struct ieee80211_supported_band *sband,
1894                                       bool large)
1895 {
1896         struct nlattr *nl_rates, *nl_rate;
1897         struct ieee80211_rate *rate;
1898         int i;
1899
1900         /* add HT info */
1901         if (sband->ht_cap.ht_supported &&
1902             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1903                      sizeof(sband->ht_cap.mcs),
1904                      &sband->ht_cap.mcs) ||
1905              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1906                          sband->ht_cap.cap) ||
1907              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1908                         sband->ht_cap.ampdu_factor) ||
1909              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1910                         sband->ht_cap.ampdu_density)))
1911                 return -ENOBUFS;
1912
1913         /* add VHT info */
1914         if (sband->vht_cap.vht_supported &&
1915             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1916                      sizeof(sband->vht_cap.vht_mcs),
1917                      &sband->vht_cap.vht_mcs) ||
1918              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1919                          sband->vht_cap.cap)))
1920                 return -ENOBUFS;
1921
1922         if (large && sband->n_iftype_data) {
1923                 struct nlattr *nl_iftype_data =
1924                         nla_nest_start_noflag(msg,
1925                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1926                 const struct ieee80211_sband_iftype_data *iftd;
1927                 int err;
1928
1929                 if (!nl_iftype_data)
1930                         return -ENOBUFS;
1931
1932                 for_each_sband_iftype_data(sband, i, iftd) {
1933                         struct nlattr *iftdata;
1934
1935                         iftdata = nla_nest_start_noflag(msg, i + 1);
1936                         if (!iftdata)
1937                                 return -ENOBUFS;
1938
1939                         err = nl80211_send_iftype_data(msg, sband, iftd);
1940                         if (err)
1941                                 return err;
1942
1943                         nla_nest_end(msg, iftdata);
1944                 }
1945
1946                 nla_nest_end(msg, nl_iftype_data);
1947         }
1948
1949         /* add EDMG info */
1950         if (large && sband->edmg_cap.channels &&
1951             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1952                        sband->edmg_cap.channels) ||
1953             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1954                        sband->edmg_cap.bw_config)))
1955
1956                 return -ENOBUFS;
1957
1958         /* add bitrates */
1959         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1960         if (!nl_rates)
1961                 return -ENOBUFS;
1962
1963         for (i = 0; i < sband->n_bitrates; i++) {
1964                 nl_rate = nla_nest_start_noflag(msg, i);
1965                 if (!nl_rate)
1966                         return -ENOBUFS;
1967
1968                 rate = &sband->bitrates[i];
1969                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1970                                 rate->bitrate))
1971                         return -ENOBUFS;
1972                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1973                     nla_put_flag(msg,
1974                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1975                         return -ENOBUFS;
1976
1977                 nla_nest_end(msg, nl_rate);
1978         }
1979
1980         nla_nest_end(msg, nl_rates);
1981
1982         /* S1G capabilities */
1983         if (sband->band == NL80211_BAND_S1GHZ && sband->s1g_cap.s1g &&
1984             (nla_put(msg, NL80211_BAND_ATTR_S1G_CAPA,
1985                      sizeof(sband->s1g_cap.cap),
1986                      sband->s1g_cap.cap) ||
1987              nla_put(msg, NL80211_BAND_ATTR_S1G_MCS_NSS_SET,
1988                      sizeof(sband->s1g_cap.nss_mcs),
1989                      sband->s1g_cap.nss_mcs)))
1990                 return -ENOBUFS;
1991
1992         return 0;
1993 }
1994
1995 static int
1996 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1997                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1998 {
1999         u16 stypes;
2000         struct nlattr *nl_ftypes, *nl_ifs;
2001         enum nl80211_iftype ift;
2002         int i;
2003
2004         if (!mgmt_stypes)
2005                 return 0;
2006
2007         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
2008         if (!nl_ifs)
2009                 return -ENOBUFS;
2010
2011         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2012                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2013                 if (!nl_ftypes)
2014                         return -ENOBUFS;
2015                 i = 0;
2016                 stypes = mgmt_stypes[ift].tx;
2017                 while (stypes) {
2018                         if ((stypes & 1) &&
2019                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2020                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2021                                 return -ENOBUFS;
2022                         stypes >>= 1;
2023                         i++;
2024                 }
2025                 nla_nest_end(msg, nl_ftypes);
2026         }
2027
2028         nla_nest_end(msg, nl_ifs);
2029
2030         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
2031         if (!nl_ifs)
2032                 return -ENOBUFS;
2033
2034         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2035                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2036                 if (!nl_ftypes)
2037                         return -ENOBUFS;
2038                 i = 0;
2039                 stypes = mgmt_stypes[ift].rx;
2040                 while (stypes) {
2041                         if ((stypes & 1) &&
2042                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2043                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2044                                 return -ENOBUFS;
2045                         stypes >>= 1;
2046                         i++;
2047                 }
2048                 nla_nest_end(msg, nl_ftypes);
2049         }
2050         nla_nest_end(msg, nl_ifs);
2051
2052         return 0;
2053 }
2054
2055 #define CMD(op, n)                                                      \
2056          do {                                                           \
2057                 if (rdev->ops->op) {                                    \
2058                         i++;                                            \
2059                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
2060                                 goto nla_put_failure;                   \
2061                 }                                                       \
2062         } while (0)
2063
2064 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2065                                         struct sk_buff *msg)
2066 {
2067         int i = 0;
2068
2069         /*
2070          * do *NOT* add anything into this function, new things need to be
2071          * advertised only to new versions of userspace that can deal with
2072          * the split (and they can't possibly care about new features...
2073          */
2074         CMD(add_virtual_intf, NEW_INTERFACE);
2075         CMD(change_virtual_intf, SET_INTERFACE);
2076         CMD(add_key, NEW_KEY);
2077         CMD(start_ap, START_AP);
2078         CMD(add_station, NEW_STATION);
2079         CMD(add_mpath, NEW_MPATH);
2080         CMD(update_mesh_config, SET_MESH_CONFIG);
2081         CMD(change_bss, SET_BSS);
2082         CMD(auth, AUTHENTICATE);
2083         CMD(assoc, ASSOCIATE);
2084         CMD(deauth, DEAUTHENTICATE);
2085         CMD(disassoc, DISASSOCIATE);
2086         CMD(join_ibss, JOIN_IBSS);
2087         CMD(join_mesh, JOIN_MESH);
2088         CMD(set_pmksa, SET_PMKSA);
2089         CMD(del_pmksa, DEL_PMKSA);
2090         CMD(flush_pmksa, FLUSH_PMKSA);
2091         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2092                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2093         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2094         CMD(mgmt_tx, FRAME);
2095         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2096         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2097                 i++;
2098                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2099                         goto nla_put_failure;
2100         }
2101         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2102             rdev->ops->join_mesh) {
2103                 i++;
2104                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2105                         goto nla_put_failure;
2106         }
2107         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2108                 CMD(tdls_mgmt, TDLS_MGMT);
2109                 CMD(tdls_oper, TDLS_OPER);
2110         }
2111         if (rdev->wiphy.max_sched_scan_reqs)
2112                 CMD(sched_scan_start, START_SCHED_SCAN);
2113         CMD(probe_client, PROBE_CLIENT);
2114         CMD(set_noack_map, SET_NOACK_MAP);
2115         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2116                 i++;
2117                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2118                         goto nla_put_failure;
2119         }
2120         CMD(start_p2p_device, START_P2P_DEVICE);
2121         CMD(set_mcast_rate, SET_MCAST_RATE);
2122 #ifdef CONFIG_NL80211_TESTMODE
2123         CMD(testmode_cmd, TESTMODE);
2124 #endif
2125
2126         if (rdev->ops->connect || rdev->ops->auth) {
2127                 i++;
2128                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2129                         goto nla_put_failure;
2130         }
2131
2132         if (rdev->ops->disconnect || rdev->ops->deauth) {
2133                 i++;
2134                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2135                         goto nla_put_failure;
2136         }
2137
2138         return i;
2139  nla_put_failure:
2140         return -ENOBUFS;
2141 }
2142
2143 static int
2144 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2145                            struct sk_buff *msg)
2146 {
2147         struct nlattr *ftm;
2148
2149         if (!cap->ftm.supported)
2150                 return 0;
2151
2152         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2153         if (!ftm)
2154                 return -ENOBUFS;
2155
2156         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2157                 return -ENOBUFS;
2158         if (cap->ftm.non_asap &&
2159             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2160                 return -ENOBUFS;
2161         if (cap->ftm.request_lci &&
2162             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2163                 return -ENOBUFS;
2164         if (cap->ftm.request_civicloc &&
2165             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2166                 return -ENOBUFS;
2167         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2168                         cap->ftm.preambles))
2169                 return -ENOBUFS;
2170         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2171                         cap->ftm.bandwidths))
2172                 return -ENOBUFS;
2173         if (cap->ftm.max_bursts_exponent >= 0 &&
2174             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2175                         cap->ftm.max_bursts_exponent))
2176                 return -ENOBUFS;
2177         if (cap->ftm.max_ftms_per_burst &&
2178             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2179                         cap->ftm.max_ftms_per_burst))
2180                 return -ENOBUFS;
2181         if (cap->ftm.trigger_based &&
2182             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2183                 return -ENOBUFS;
2184         if (cap->ftm.non_trigger_based &&
2185             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2186                 return -ENOBUFS;
2187
2188         nla_nest_end(msg, ftm);
2189         return 0;
2190 }
2191
2192 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2193                                   struct sk_buff *msg)
2194 {
2195         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2196         struct nlattr *pmsr, *caps;
2197
2198         if (!cap)
2199                 return 0;
2200
2201         /*
2202          * we don't need to clean up anything here since the caller
2203          * will genlmsg_cancel() if we fail
2204          */
2205
2206         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2207         if (!pmsr)
2208                 return -ENOBUFS;
2209
2210         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2211                 return -ENOBUFS;
2212
2213         if (cap->report_ap_tsf &&
2214             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2215                 return -ENOBUFS;
2216
2217         if (cap->randomize_mac_addr &&
2218             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2219                 return -ENOBUFS;
2220
2221         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2222         if (!caps)
2223                 return -ENOBUFS;
2224
2225         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2226                 return -ENOBUFS;
2227
2228         nla_nest_end(msg, caps);
2229         nla_nest_end(msg, pmsr);
2230
2231         return 0;
2232 }
2233
2234 static int
2235 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2236                               struct sk_buff *msg)
2237 {
2238         int i;
2239         struct nlattr *nested, *nested_akms;
2240         const struct wiphy_iftype_akm_suites *iftype_akms;
2241
2242         if (!rdev->wiphy.num_iftype_akm_suites ||
2243             !rdev->wiphy.iftype_akm_suites)
2244                 return 0;
2245
2246         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2247         if (!nested)
2248                 return -ENOBUFS;
2249
2250         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2251                 nested_akms = nla_nest_start(msg, i + 1);
2252                 if (!nested_akms)
2253                         return -ENOBUFS;
2254
2255                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2256
2257                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2258                                         iftype_akms->iftypes_mask))
2259                         return -ENOBUFS;
2260
2261                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2262                             sizeof(u32) * iftype_akms->n_akm_suites,
2263                             iftype_akms->akm_suites)) {
2264                         return -ENOBUFS;
2265                 }
2266                 nla_nest_end(msg, nested_akms);
2267         }
2268
2269         nla_nest_end(msg, nested);
2270
2271         return 0;
2272 }
2273
2274 static int
2275 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2276                                struct sk_buff *msg)
2277 {
2278         struct nlattr *supp;
2279
2280         if (!rdev->wiphy.tid_config_support.vif &&
2281             !rdev->wiphy.tid_config_support.peer)
2282                 return 0;
2283
2284         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2285         if (!supp)
2286                 return -ENOSPC;
2287
2288         if (rdev->wiphy.tid_config_support.vif &&
2289             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2290                               rdev->wiphy.tid_config_support.vif,
2291                               NL80211_TID_CONFIG_ATTR_PAD))
2292                 goto fail;
2293
2294         if (rdev->wiphy.tid_config_support.peer &&
2295             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2296                               rdev->wiphy.tid_config_support.peer,
2297                               NL80211_TID_CONFIG_ATTR_PAD))
2298                 goto fail;
2299
2300         /* for now we just use the same value ... makes more sense */
2301         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2302                        rdev->wiphy.tid_config_support.max_retry))
2303                 goto fail;
2304         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2305                        rdev->wiphy.tid_config_support.max_retry))
2306                 goto fail;
2307
2308         nla_nest_end(msg, supp);
2309
2310         return 0;
2311 fail:
2312         nla_nest_cancel(msg, supp);
2313         return -ENOBUFS;
2314 }
2315
2316 static int
2317 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2318                       struct sk_buff *msg)
2319 {
2320         struct nlattr *sar_capa, *specs, *sub_freq_range;
2321         u8 num_freq_ranges;
2322         int i;
2323
2324         if (!rdev->wiphy.sar_capa)
2325                 return 0;
2326
2327         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2328
2329         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2330         if (!sar_capa)
2331                 return -ENOSPC;
2332
2333         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2334                 goto fail;
2335
2336         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2337         if (!specs)
2338                 goto fail;
2339
2340         /* report supported freq_ranges */
2341         for (i = 0; i < num_freq_ranges; i++) {
2342                 sub_freq_range = nla_nest_start(msg, i + 1);
2343                 if (!sub_freq_range)
2344                         goto fail;
2345
2346                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2347                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2348                         goto fail;
2349
2350                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2351                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2352                         goto fail;
2353
2354                 nla_nest_end(msg, sub_freq_range);
2355         }
2356
2357         nla_nest_end(msg, specs);
2358         nla_nest_end(msg, sar_capa);
2359
2360         return 0;
2361 fail:
2362         nla_nest_cancel(msg, sar_capa);
2363         return -ENOBUFS;
2364 }
2365
2366 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2367 {
2368         struct nlattr *config;
2369
2370         if (!wiphy->mbssid_max_interfaces)
2371                 return 0;
2372
2373         config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2374         if (!config)
2375                 return -ENOBUFS;
2376
2377         if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2378                        wiphy->mbssid_max_interfaces))
2379                 goto fail;
2380
2381         if (wiphy->ema_max_profile_periodicity &&
2382             nla_put_u8(msg,
2383                        NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2384                        wiphy->ema_max_profile_periodicity))
2385                 goto fail;
2386
2387         nla_nest_end(msg, config);
2388         return 0;
2389
2390 fail:
2391         nla_nest_cancel(msg, config);
2392         return -ENOBUFS;
2393 }
2394
2395 struct nl80211_dump_wiphy_state {
2396         s64 filter_wiphy;
2397         long start;
2398         long split_start, band_start, chan_start, capa_start;
2399         bool split;
2400 };
2401
2402 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2403                               enum nl80211_commands cmd,
2404                               struct sk_buff *msg, u32 portid, u32 seq,
2405                               int flags, struct nl80211_dump_wiphy_state *state)
2406 {
2407         void *hdr;
2408         struct nlattr *nl_bands, *nl_band;
2409         struct nlattr *nl_freqs, *nl_freq;
2410         struct nlattr *nl_cmds;
2411         enum nl80211_band band;
2412         struct ieee80211_channel *chan;
2413         int i;
2414         const struct ieee80211_txrx_stypes *mgmt_stypes =
2415                                 rdev->wiphy.mgmt_stypes;
2416         u32 features;
2417
2418         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2419         if (!hdr)
2420                 return -ENOBUFS;
2421
2422         if (WARN_ON(!state))
2423                 return -EINVAL;
2424
2425         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2426             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2427                            wiphy_name(&rdev->wiphy)) ||
2428             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2429                         cfg80211_rdev_list_generation))
2430                 goto nla_put_failure;
2431
2432         if (cmd != NL80211_CMD_NEW_WIPHY)
2433                 goto finish;
2434
2435         switch (state->split_start) {
2436         case 0:
2437                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2438                                rdev->wiphy.retry_short) ||
2439                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2440                                rdev->wiphy.retry_long) ||
2441                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2442                                 rdev->wiphy.frag_threshold) ||
2443                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2444                                 rdev->wiphy.rts_threshold) ||
2445                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2446                                rdev->wiphy.coverage_class) ||
2447                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2448                                rdev->wiphy.max_scan_ssids) ||
2449                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2450                                rdev->wiphy.max_sched_scan_ssids) ||
2451                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2452                                 rdev->wiphy.max_scan_ie_len) ||
2453                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2454                                 rdev->wiphy.max_sched_scan_ie_len) ||
2455                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2456                                rdev->wiphy.max_match_sets))
2457                         goto nla_put_failure;
2458
2459                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2460                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2461                         goto nla_put_failure;
2462                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2463                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2464                         goto nla_put_failure;
2465                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2466                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2467                         goto nla_put_failure;
2468                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2469                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2470                         goto nla_put_failure;
2471                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2472                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2473                         goto nla_put_failure;
2474                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2475                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2476                         goto nla_put_failure;
2477                 state->split_start++;
2478                 if (state->split)
2479                         break;
2480                 fallthrough;
2481         case 1:
2482                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2483                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2484                             rdev->wiphy.cipher_suites))
2485                         goto nla_put_failure;
2486
2487                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2488                                rdev->wiphy.max_num_pmkids))
2489                         goto nla_put_failure;
2490
2491                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2492                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2493                         goto nla_put_failure;
2494
2495                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2496                                 rdev->wiphy.available_antennas_tx) ||
2497                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2498                                 rdev->wiphy.available_antennas_rx))
2499                         goto nla_put_failure;
2500
2501                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2502                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2503                                 rdev->wiphy.probe_resp_offload))
2504                         goto nla_put_failure;
2505
2506                 if ((rdev->wiphy.available_antennas_tx ||
2507                      rdev->wiphy.available_antennas_rx) &&
2508                     rdev->ops->get_antenna) {
2509                         u32 tx_ant = 0, rx_ant = 0;
2510                         int res;
2511
2512                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2513                         if (!res) {
2514                                 if (nla_put_u32(msg,
2515                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2516                                                 tx_ant) ||
2517                                     nla_put_u32(msg,
2518                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2519                                                 rx_ant))
2520                                         goto nla_put_failure;
2521                         }
2522                 }
2523
2524                 state->split_start++;
2525                 if (state->split)
2526                         break;
2527                 fallthrough;
2528         case 2:
2529                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2530                                         rdev->wiphy.interface_modes))
2531                                 goto nla_put_failure;
2532                 state->split_start++;
2533                 if (state->split)
2534                         break;
2535                 fallthrough;
2536         case 3:
2537                 nl_bands = nla_nest_start_noflag(msg,
2538                                                  NL80211_ATTR_WIPHY_BANDS);
2539                 if (!nl_bands)
2540                         goto nla_put_failure;
2541
2542                 for (band = state->band_start;
2543                      band < (state->split ?
2544                                 NUM_NL80211_BANDS :
2545                                 NL80211_BAND_60GHZ + 1);
2546                      band++) {
2547                         struct ieee80211_supported_band *sband;
2548
2549                         /* omit higher bands for ancient software */
2550                         if (band > NL80211_BAND_5GHZ && !state->split)
2551                                 break;
2552
2553                         sband = rdev->wiphy.bands[band];
2554
2555                         if (!sband)
2556                                 continue;
2557
2558                         nl_band = nla_nest_start_noflag(msg, band);
2559                         if (!nl_band)
2560                                 goto nla_put_failure;
2561
2562                         switch (state->chan_start) {
2563                         case 0:
2564                                 if (nl80211_send_band_rateinfo(msg, sband,
2565                                                                state->split))
2566                                         goto nla_put_failure;
2567                                 state->chan_start++;
2568                                 if (state->split)
2569                                         break;
2570                                 fallthrough;
2571                         default:
2572                                 /* add frequencies */
2573                                 nl_freqs = nla_nest_start_noflag(msg,
2574                                                                  NL80211_BAND_ATTR_FREQS);
2575                                 if (!nl_freqs)
2576                                         goto nla_put_failure;
2577
2578                                 for (i = state->chan_start - 1;
2579                                      i < sband->n_channels;
2580                                      i++) {
2581                                         nl_freq = nla_nest_start_noflag(msg,
2582                                                                         i);
2583                                         if (!nl_freq)
2584                                                 goto nla_put_failure;
2585
2586                                         chan = &sband->channels[i];
2587
2588                                         if (nl80211_msg_put_channel(
2589                                                         msg, &rdev->wiphy, chan,
2590                                                         state->split))
2591                                                 goto nla_put_failure;
2592
2593                                         nla_nest_end(msg, nl_freq);
2594                                         if (state->split)
2595                                                 break;
2596                                 }
2597                                 if (i < sband->n_channels)
2598                                         state->chan_start = i + 2;
2599                                 else
2600                                         state->chan_start = 0;
2601                                 nla_nest_end(msg, nl_freqs);
2602                         }
2603
2604                         nla_nest_end(msg, nl_band);
2605
2606                         if (state->split) {
2607                                 /* start again here */
2608                                 if (state->chan_start)
2609                                         band--;
2610                                 break;
2611                         }
2612                 }
2613                 nla_nest_end(msg, nl_bands);
2614
2615                 if (band < NUM_NL80211_BANDS)
2616                         state->band_start = band + 1;
2617                 else
2618                         state->band_start = 0;
2619
2620                 /* if bands & channels are done, continue outside */
2621                 if (state->band_start == 0 && state->chan_start == 0)
2622                         state->split_start++;
2623                 if (state->split)
2624                         break;
2625                 fallthrough;
2626         case 4:
2627                 nl_cmds = nla_nest_start_noflag(msg,
2628                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2629                 if (!nl_cmds)
2630                         goto nla_put_failure;
2631
2632                 i = nl80211_add_commands_unsplit(rdev, msg);
2633                 if (i < 0)
2634                         goto nla_put_failure;
2635                 if (state->split) {
2636                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2637                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2638                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2639                                 CMD(channel_switch, CHANNEL_SWITCH);
2640                         CMD(set_qos_map, SET_QOS_MAP);
2641                         if (rdev->wiphy.features &
2642                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2643                                 CMD(add_tx_ts, ADD_TX_TS);
2644                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2645                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2646                         CMD(update_ft_ies, UPDATE_FT_IES);
2647                         if (rdev->wiphy.sar_capa)
2648                                 CMD(set_sar_specs, SET_SAR_SPECS);
2649                 }
2650 #undef CMD
2651
2652                 nla_nest_end(msg, nl_cmds);
2653                 state->split_start++;
2654                 if (state->split)
2655                         break;
2656                 fallthrough;
2657         case 5:
2658                 if (rdev->ops->remain_on_channel &&
2659                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2660                     nla_put_u32(msg,
2661                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2662                                 rdev->wiphy.max_remain_on_channel_duration))
2663                         goto nla_put_failure;
2664
2665                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2666                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2667                         goto nla_put_failure;
2668
2669                 state->split_start++;
2670                 if (state->split)
2671                         break;
2672                 fallthrough;
2673         case 6:
2674 #ifdef CONFIG_PM
2675                 if (nl80211_send_wowlan(msg, rdev, state->split))
2676                         goto nla_put_failure;
2677                 state->split_start++;
2678                 if (state->split)
2679                         break;
2680 #else
2681                 state->split_start++;
2682 #endif
2683                 fallthrough;
2684         case 7:
2685                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2686                                         rdev->wiphy.software_iftypes))
2687                         goto nla_put_failure;
2688
2689                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2690                                                    state->split))
2691                         goto nla_put_failure;
2692
2693                 state->split_start++;
2694                 if (state->split)
2695                         break;
2696                 fallthrough;
2697         case 8:
2698                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2699                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2700                                 rdev->wiphy.ap_sme_capa))
2701                         goto nla_put_failure;
2702
2703                 features = rdev->wiphy.features;
2704                 /*
2705                  * We can only add the per-channel limit information if the
2706                  * dump is split, otherwise it makes it too big. Therefore
2707                  * only advertise it in that case.
2708                  */
2709                 if (state->split)
2710                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2711                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2712                         goto nla_put_failure;
2713
2714                 if (rdev->wiphy.ht_capa_mod_mask &&
2715                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2716                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2717                             rdev->wiphy.ht_capa_mod_mask))
2718                         goto nla_put_failure;
2719
2720                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2721                     rdev->wiphy.max_acl_mac_addrs &&
2722                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2723                                 rdev->wiphy.max_acl_mac_addrs))
2724                         goto nla_put_failure;
2725
2726                 /*
2727                  * Any information below this point is only available to
2728                  * applications that can deal with it being split. This
2729                  * helps ensure that newly added capabilities don't break
2730                  * older tools by overrunning their buffers.
2731                  *
2732                  * We still increment split_start so that in the split
2733                  * case we'll continue with more data in the next round,
2734                  * but break unconditionally so unsplit data stops here.
2735                  */
2736                 if (state->split)
2737                         state->split_start++;
2738                 else
2739                         state->split_start = 0;
2740                 break;
2741         case 9:
2742                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2743                         goto nla_put_failure;
2744
2745                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2746                                 rdev->wiphy.max_sched_scan_plans) ||
2747                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2748                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2749                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2750                                 rdev->wiphy.max_sched_scan_plan_iterations))
2751                         goto nla_put_failure;
2752
2753                 if (rdev->wiphy.extended_capabilities &&
2754                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2755                              rdev->wiphy.extended_capabilities_len,
2756                              rdev->wiphy.extended_capabilities) ||
2757                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2758                              rdev->wiphy.extended_capabilities_len,
2759                              rdev->wiphy.extended_capabilities_mask)))
2760                         goto nla_put_failure;
2761
2762                 if (rdev->wiphy.vht_capa_mod_mask &&
2763                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2764                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2765                             rdev->wiphy.vht_capa_mod_mask))
2766                         goto nla_put_failure;
2767
2768                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2769                             rdev->wiphy.perm_addr))
2770                         goto nla_put_failure;
2771
2772                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2773                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2774                             rdev->wiphy.addr_mask))
2775                         goto nla_put_failure;
2776
2777                 if (rdev->wiphy.n_addresses > 1) {
2778                         void *attr;
2779
2780                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2781                         if (!attr)
2782                                 goto nla_put_failure;
2783
2784                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2785                                 if (nla_put(msg, i + 1, ETH_ALEN,
2786                                             rdev->wiphy.addresses[i].addr))
2787                                         goto nla_put_failure;
2788
2789                         nla_nest_end(msg, attr);
2790                 }
2791
2792                 state->split_start++;
2793                 break;
2794         case 10:
2795                 if (nl80211_send_coalesce(msg, rdev))
2796                         goto nla_put_failure;
2797
2798                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2799                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2800                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2801                         goto nla_put_failure;
2802
2803                 if (rdev->wiphy.max_ap_assoc_sta &&
2804                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2805                                 rdev->wiphy.max_ap_assoc_sta))
2806                         goto nla_put_failure;
2807
2808                 state->split_start++;
2809                 break;
2810         case 11:
2811                 if (rdev->wiphy.n_vendor_commands) {
2812                         const struct nl80211_vendor_cmd_info *info;
2813                         struct nlattr *nested;
2814
2815                         nested = nla_nest_start_noflag(msg,
2816                                                        NL80211_ATTR_VENDOR_DATA);
2817                         if (!nested)
2818                                 goto nla_put_failure;
2819
2820                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2821                                 info = &rdev->wiphy.vendor_commands[i].info;
2822                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2823                                         goto nla_put_failure;
2824                         }
2825                         nla_nest_end(msg, nested);
2826                 }
2827
2828                 if (rdev->wiphy.n_vendor_events) {
2829                         const struct nl80211_vendor_cmd_info *info;
2830                         struct nlattr *nested;
2831
2832                         nested = nla_nest_start_noflag(msg,
2833                                                        NL80211_ATTR_VENDOR_EVENTS);
2834                         if (!nested)
2835                                 goto nla_put_failure;
2836
2837                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2838                                 info = &rdev->wiphy.vendor_events[i];
2839                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2840                                         goto nla_put_failure;
2841                         }
2842                         nla_nest_end(msg, nested);
2843                 }
2844                 state->split_start++;
2845                 break;
2846         case 12:
2847                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2848                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2849                                rdev->wiphy.max_num_csa_counters))
2850                         goto nla_put_failure;
2851
2852                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2853                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2854                         goto nla_put_failure;
2855
2856                 if (rdev->wiphy.max_sched_scan_reqs &&
2857                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2858                                 rdev->wiphy.max_sched_scan_reqs))
2859                         goto nla_put_failure;
2860
2861                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2862                             sizeof(rdev->wiphy.ext_features),
2863                             rdev->wiphy.ext_features))
2864                         goto nla_put_failure;
2865
2866                 if (rdev->wiphy.bss_select_support) {
2867                         struct nlattr *nested;
2868                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2869
2870                         nested = nla_nest_start_noflag(msg,
2871                                                        NL80211_ATTR_BSS_SELECT);
2872                         if (!nested)
2873                                 goto nla_put_failure;
2874
2875                         i = 0;
2876                         while (bss_select_support) {
2877                                 if ((bss_select_support & 1) &&
2878                                     nla_put_flag(msg, i))
2879                                         goto nla_put_failure;
2880                                 i++;
2881                                 bss_select_support >>= 1;
2882                         }
2883                         nla_nest_end(msg, nested);
2884                 }
2885
2886                 state->split_start++;
2887                 break;
2888         case 13:
2889                 if (rdev->wiphy.num_iftype_ext_capab &&
2890                     rdev->wiphy.iftype_ext_capab) {
2891                         struct nlattr *nested_ext_capab, *nested;
2892
2893                         nested = nla_nest_start_noflag(msg,
2894                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2895                         if (!nested)
2896                                 goto nla_put_failure;
2897
2898                         for (i = state->capa_start;
2899                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2900                                 const struct wiphy_iftype_ext_capab *capab;
2901
2902                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2903
2904                                 nested_ext_capab = nla_nest_start_noflag(msg,
2905                                                                          i);
2906                                 if (!nested_ext_capab ||
2907                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2908                                                 capab->iftype) ||
2909                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2910                                             capab->extended_capabilities_len,
2911                                             capab->extended_capabilities) ||
2912                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2913                                             capab->extended_capabilities_len,
2914                                             capab->extended_capabilities_mask))
2915                                         goto nla_put_failure;
2916
2917                                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2918                                     (nla_put_u16(msg,
2919                                                  NL80211_ATTR_EML_CAPABILITY,
2920                                                  capab->eml_capabilities) ||
2921                                      nla_put_u16(msg,
2922                                                  NL80211_ATTR_MLD_CAPA_AND_OPS,
2923                                                  capab->mld_capa_and_ops)))
2924                                         goto nla_put_failure;
2925
2926                                 nla_nest_end(msg, nested_ext_capab);
2927                                 if (state->split)
2928                                         break;
2929                         }
2930                         nla_nest_end(msg, nested);
2931                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2932                                 state->capa_start = i + 1;
2933                                 break;
2934                         }
2935                 }
2936
2937                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2938                                 rdev->wiphy.nan_supported_bands))
2939                         goto nla_put_failure;
2940
2941                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2942                                             NL80211_EXT_FEATURE_TXQS)) {
2943                         struct cfg80211_txq_stats txqstats = {};
2944                         int res;
2945
2946                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2947                         if (!res &&
2948                             !nl80211_put_txq_stats(msg, &txqstats,
2949                                                    NL80211_ATTR_TXQ_STATS))
2950                                 goto nla_put_failure;
2951
2952                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2953                                         rdev->wiphy.txq_limit))
2954                                 goto nla_put_failure;
2955                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2956                                         rdev->wiphy.txq_memory_limit))
2957                                 goto nla_put_failure;
2958                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2959                                         rdev->wiphy.txq_quantum))
2960                                 goto nla_put_failure;
2961                 }
2962
2963                 state->split_start++;
2964                 break;
2965         case 14:
2966                 if (nl80211_send_pmsr_capa(rdev, msg))
2967                         goto nla_put_failure;
2968
2969                 state->split_start++;
2970                 break;
2971         case 15:
2972                 if (rdev->wiphy.akm_suites &&
2973                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2974                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2975                             rdev->wiphy.akm_suites))
2976                         goto nla_put_failure;
2977
2978                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2979                         goto nla_put_failure;
2980
2981                 if (nl80211_put_tid_config_support(rdev, msg))
2982                         goto nla_put_failure;
2983                 state->split_start++;
2984                 break;
2985         case 16:
2986                 if (nl80211_put_sar_specs(rdev, msg))
2987                         goto nla_put_failure;
2988
2989                 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2990                         goto nla_put_failure;
2991
2992                 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2993                                 rdev->wiphy.max_num_akm_suites))
2994                         goto nla_put_failure;
2995
2996                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
2997                         nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
2998
2999                 if (rdev->wiphy.hw_timestamp_max_peers &&
3000                     nla_put_u16(msg, NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS,
3001                                 rdev->wiphy.hw_timestamp_max_peers))
3002                         goto nla_put_failure;
3003
3004                 /* done */
3005                 state->split_start = 0;
3006                 break;
3007         }
3008  finish:
3009         genlmsg_end(msg, hdr);
3010         return 0;
3011
3012  nla_put_failure:
3013         genlmsg_cancel(msg, hdr);
3014         return -EMSGSIZE;
3015 }
3016
3017 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
3018                                     struct netlink_callback *cb,
3019                                     struct nl80211_dump_wiphy_state *state)
3020 {
3021         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
3022         int ret;
3023
3024         if (!tb)
3025                 return -ENOMEM;
3026
3027         ret = nlmsg_parse_deprecated(cb->nlh,
3028                                      GENL_HDRLEN + nl80211_fam.hdrsize,
3029                                      tb, nl80211_fam.maxattr,
3030                                      nl80211_policy, NULL);
3031         /* ignore parse errors for backward compatibility */
3032         if (ret) {
3033                 ret = 0;
3034                 goto out;
3035         }
3036
3037         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
3038         if (tb[NL80211_ATTR_WIPHY])
3039                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
3040         if (tb[NL80211_ATTR_WDEV])
3041                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3042         if (tb[NL80211_ATTR_IFINDEX]) {
3043                 struct net_device *netdev;
3044                 struct cfg80211_registered_device *rdev;
3045                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3046
3047                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3048                 if (!netdev) {
3049                         ret = -ENODEV;
3050                         goto out;
3051                 }
3052                 if (netdev->ieee80211_ptr) {
3053                         rdev = wiphy_to_rdev(
3054                                 netdev->ieee80211_ptr->wiphy);
3055                         state->filter_wiphy = rdev->wiphy_idx;
3056                 }
3057         }
3058
3059         ret = 0;
3060 out:
3061         kfree(tb);
3062         return ret;
3063 }
3064
3065 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3066 {
3067         int idx = 0, ret;
3068         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3069         struct cfg80211_registered_device *rdev;
3070
3071         rtnl_lock();
3072         if (!state) {
3073                 state = kzalloc(sizeof(*state), GFP_KERNEL);
3074                 if (!state) {
3075                         rtnl_unlock();
3076                         return -ENOMEM;
3077                 }
3078                 state->filter_wiphy = -1;
3079                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3080                 if (ret) {
3081                         kfree(state);
3082                         rtnl_unlock();
3083                         return ret;
3084                 }
3085                 cb->args[0] = (long)state;
3086         }
3087
3088         for_each_rdev(rdev) {
3089                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3090                         continue;
3091                 if (++idx <= state->start)
3092                         continue;
3093                 if (state->filter_wiphy != -1 &&
3094                     state->filter_wiphy != rdev->wiphy_idx)
3095                         continue;
3096                 wiphy_lock(&rdev->wiphy);
3097                 /* attempt to fit multiple wiphy data chunks into the skb */
3098                 do {
3099                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3100                                                  skb,
3101                                                  NETLINK_CB(cb->skb).portid,
3102                                                  cb->nlh->nlmsg_seq,
3103                                                  NLM_F_MULTI, state);
3104                         if (ret < 0) {
3105                                 /*
3106                                  * If sending the wiphy data didn't fit (ENOBUFS
3107                                  * or EMSGSIZE returned), this SKB is still
3108                                  * empty (so it's not too big because another
3109                                  * wiphy dataset is already in the skb) and
3110                                  * we've not tried to adjust the dump allocation
3111                                  * yet ... then adjust the alloc size to be
3112                                  * bigger, and return 1 but with the empty skb.
3113                                  * This results in an empty message being RX'ed
3114                                  * in userspace, but that is ignored.
3115                                  *
3116                                  * We can then retry with the larger buffer.
3117                                  */
3118                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3119                                     !skb->len && !state->split &&
3120                                     cb->min_dump_alloc < 4096) {
3121                                         cb->min_dump_alloc = 4096;
3122                                         state->split_start = 0;
3123                                         wiphy_unlock(&rdev->wiphy);
3124                                         rtnl_unlock();
3125                                         return 1;
3126                                 }
3127                                 idx--;
3128                                 break;
3129                         }
3130                 } while (state->split_start > 0);
3131                 wiphy_unlock(&rdev->wiphy);
3132                 break;
3133         }
3134         rtnl_unlock();
3135
3136         state->start = idx;
3137
3138         return skb->len;
3139 }
3140
3141 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3142 {
3143         kfree((void *)cb->args[0]);
3144         return 0;
3145 }
3146
3147 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3148 {
3149         struct sk_buff *msg;
3150         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3151         struct nl80211_dump_wiphy_state state = {};
3152
3153         msg = nlmsg_new(4096, GFP_KERNEL);
3154         if (!msg)
3155                 return -ENOMEM;
3156
3157         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3158                                info->snd_portid, info->snd_seq, 0,
3159                                &state) < 0) {
3160                 nlmsg_free(msg);
3161                 return -ENOBUFS;
3162         }
3163
3164         return genlmsg_reply(msg, info);
3165 }
3166
3167 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3168         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
3169         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
3170         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
3171         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
3172         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
3173 };
3174
3175 static int parse_txq_params(struct nlattr *tb[],
3176                             struct ieee80211_txq_params *txq_params)
3177 {
3178         u8 ac;
3179
3180         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3181             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3182             !tb[NL80211_TXQ_ATTR_AIFS])
3183                 return -EINVAL;
3184
3185         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3186         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3187         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3188         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3189         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3190
3191         if (ac >= NL80211_NUM_ACS)
3192                 return -EINVAL;
3193         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3194         return 0;
3195 }
3196
3197 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3198 {
3199         /*
3200          * You can only set the channel explicitly for some interfaces,
3201          * most have their channel managed via their respective
3202          * "establish a connection" command (connect, join, ...)
3203          *
3204          * For AP/GO and mesh mode, the channel can be set with the
3205          * channel userspace API, but is only stored and passed to the
3206          * low-level driver when the AP starts or the mesh is joined.
3207          * This is for backward compatibility, userspace can also give
3208          * the channel in the start-ap or join-mesh commands instead.
3209          *
3210          * Monitors are special as they are normally slaved to
3211          * whatever else is going on, so they have their own special
3212          * operation to set the monitor channel if possible.
3213          */
3214         return !wdev ||
3215                 wdev->iftype == NL80211_IFTYPE_AP ||
3216                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3217                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3218                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3219 }
3220
3221 static int _nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3222                                   struct genl_info *info, bool monitor,
3223                                   struct cfg80211_chan_def *chandef)
3224 {
3225         struct netlink_ext_ack *extack = info->extack;
3226         struct nlattr **attrs = info->attrs;
3227         u32 control_freq;
3228
3229         if (!attrs[NL80211_ATTR_WIPHY_FREQ]) {
3230                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3231                                     "Frequency is missing");
3232                 return -EINVAL;
3233         }
3234
3235         control_freq = MHZ_TO_KHZ(
3236                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3237         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3238                 control_freq +=
3239                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3240
3241         memset(chandef, 0, sizeof(*chandef));
3242         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3243         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3244         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3245         chandef->freq1_offset = control_freq % 1000;
3246         chandef->center_freq2 = 0;
3247
3248         if (!chandef->chan) {
3249                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3250                                     "Unknown channel");
3251                 return -EINVAL;
3252         }
3253
3254         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3255                 enum nl80211_channel_type chantype;
3256
3257                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3258
3259                 switch (chantype) {
3260                 case NL80211_CHAN_NO_HT:
3261                 case NL80211_CHAN_HT20:
3262                 case NL80211_CHAN_HT40PLUS:
3263                 case NL80211_CHAN_HT40MINUS:
3264                         cfg80211_chandef_create(chandef, chandef->chan,
3265                                                 chantype);
3266                         /* user input for center_freq is incorrect */
3267                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3268                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3269                                 NL_SET_ERR_MSG_ATTR(extack,
3270                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3271                                                     "bad center frequency 1");
3272                                 return -EINVAL;
3273                         }
3274                         /* center_freq2 must be zero */
3275                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3276                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3277                                 NL_SET_ERR_MSG_ATTR(extack,
3278                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3279                                                     "center frequency 2 can't be used");
3280                                 return -EINVAL;
3281                         }
3282                         break;
3283                 default:
3284                         NL_SET_ERR_MSG_ATTR(extack,
3285                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3286                                             "invalid channel type");
3287                         return -EINVAL;
3288                 }
3289         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3290                 chandef->width =
3291                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3292                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3293                         /* User input error for channel width doesn't match channel  */
3294                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3295                                 NL_SET_ERR_MSG_ATTR(extack,
3296                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3297                                                     "bad channel width");
3298                                 return -EINVAL;
3299                         }
3300                 }
3301                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3302                         chandef->center_freq1 =
3303                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3304                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3305                                 chandef->freq1_offset = nla_get_u32(
3306                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3307                         else
3308                                 chandef->freq1_offset = 0;
3309                 }
3310                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3311                         chandef->center_freq2 =
3312                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3313         }
3314
3315         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3316                 chandef->edmg.channels =
3317                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3318
3319                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3320                         chandef->edmg.bw_config =
3321                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3322         } else {
3323                 chandef->edmg.bw_config = 0;
3324                 chandef->edmg.channels = 0;
3325         }
3326
3327         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
3328                 chandef->punctured =
3329                         nla_get_u32(info->attrs[NL80211_ATTR_PUNCT_BITMAP]);
3330
3331                 if (chandef->punctured &&
3332                     !wiphy_ext_feature_isset(&rdev->wiphy,
3333                                              NL80211_EXT_FEATURE_PUNCT)) {
3334                         NL_SET_ERR_MSG(extack,
3335                                        "driver doesn't support puncturing");
3336                         return -EINVAL;
3337                 }
3338         }
3339
3340         if (!cfg80211_chandef_valid(chandef)) {
3341                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3342                 return -EINVAL;
3343         }
3344
3345         if (!_cfg80211_chandef_usable(&rdev->wiphy, chandef,
3346                                       IEEE80211_CHAN_DISABLED,
3347                                       monitor)) {
3348                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3349                 return -EINVAL;
3350         }
3351
3352         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3353              chandef->width == NL80211_CHAN_WIDTH_10) &&
3354             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3355                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3356                 return -EINVAL;
3357         }
3358
3359         return 0;
3360 }
3361
3362 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3363                           struct genl_info *info,
3364                           struct cfg80211_chan_def *chandef)
3365 {
3366         return _nl80211_parse_chandef(rdev, info, false, chandef);
3367 }
3368
3369 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3370                                  struct net_device *dev,
3371                                  struct genl_info *info,
3372                                  int _link_id)
3373 {
3374         struct cfg80211_chan_def chandef;
3375         int result;
3376         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3377         struct wireless_dev *wdev = NULL;
3378         int link_id = _link_id;
3379
3380         if (dev)
3381                 wdev = dev->ieee80211_ptr;
3382         if (!nl80211_can_set_dev_channel(wdev))
3383                 return -EOPNOTSUPP;
3384         if (wdev)
3385                 iftype = wdev->iftype;
3386
3387         if (link_id < 0) {
3388                 if (wdev && wdev->valid_links)
3389                         return -EINVAL;
3390                 link_id = 0;
3391         }
3392
3393         result = _nl80211_parse_chandef(rdev, info,
3394                                         iftype == NL80211_IFTYPE_MONITOR,
3395                                         &chandef);
3396         if (result)
3397                 return result;
3398
3399         switch (iftype) {
3400         case NL80211_IFTYPE_AP:
3401         case NL80211_IFTYPE_P2P_GO:
3402                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3403                                                    iftype))
3404                         return -EINVAL;
3405                 if (wdev->links[link_id].ap.beacon_interval) {
3406                         struct ieee80211_channel *cur_chan;
3407
3408                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3409                             !(rdev->wiphy.features &
3410                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3411                                 return -EBUSY;
3412
3413                         /* Only allow dynamic channel width changes */
3414                         cur_chan = wdev->links[link_id].ap.chandef.chan;
3415                         if (chandef.chan != cur_chan)
3416                                 return -EBUSY;
3417
3418                         result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3419                                                        &chandef);
3420                         if (result)
3421                                 return result;
3422                         wdev->links[link_id].ap.chandef = chandef;
3423                 } else {
3424                         wdev->u.ap.preset_chandef = chandef;
3425                 }
3426                 return 0;
3427         case NL80211_IFTYPE_MESH_POINT:
3428                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3429         case NL80211_IFTYPE_MONITOR:
3430                 return cfg80211_set_monitor_channel(rdev, &chandef);
3431         default:
3432                 break;
3433         }
3434
3435         return -EINVAL;
3436 }
3437
3438 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3439 {
3440         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3441         int link_id = nl80211_link_id_or_invalid(info->attrs);
3442         struct net_device *netdev = info->user_ptr[1];
3443
3444         return __nl80211_set_channel(rdev, netdev, info, link_id);
3445 }
3446
3447 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3448 {
3449         struct cfg80211_registered_device *rdev = NULL;
3450         struct net_device *netdev = NULL;
3451         struct wireless_dev *wdev;
3452         int result = 0, rem_txq_params = 0;
3453         struct nlattr *nl_txq_params;
3454         u32 changed;
3455         u8 retry_short = 0, retry_long = 0;
3456         u32 frag_threshold = 0, rts_threshold = 0;
3457         u8 coverage_class = 0;
3458         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3459
3460         rtnl_lock();
3461         /*
3462          * Try to find the wiphy and netdev. Normally this
3463          * function shouldn't need the netdev, but this is
3464          * done for backward compatibility -- previously
3465          * setting the channel was done per wiphy, but now
3466          * it is per netdev. Previous userland like hostapd
3467          * also passed a netdev to set_wiphy, so that it is
3468          * possible to let that go to the right netdev!
3469          */
3470
3471         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3472                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3473
3474                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3475                 if (netdev && netdev->ieee80211_ptr)
3476                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3477                 else
3478                         netdev = NULL;
3479         }
3480
3481         if (!netdev) {
3482                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3483                                                   info->attrs);
3484                 if (IS_ERR(rdev)) {
3485                         rtnl_unlock();
3486                         return PTR_ERR(rdev);
3487                 }
3488                 wdev = NULL;
3489                 netdev = NULL;
3490                 result = 0;
3491         } else
3492                 wdev = netdev->ieee80211_ptr;
3493
3494         wiphy_lock(&rdev->wiphy);
3495
3496         /*
3497          * end workaround code, by now the rdev is available
3498          * and locked, and wdev may or may not be NULL.
3499          */
3500
3501         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3502                 result = cfg80211_dev_rename(
3503                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3504         rtnl_unlock();
3505
3506         if (result)
3507                 goto out;
3508
3509         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3510                 struct ieee80211_txq_params txq_params;
3511                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3512
3513                 if (!rdev->ops->set_txq_params) {
3514                         result = -EOPNOTSUPP;
3515                         goto out;
3516                 }
3517
3518                 if (!netdev) {
3519                         result = -EINVAL;
3520                         goto out;
3521                 }
3522
3523                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3524                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3525                         result = -EINVAL;
3526                         goto out;
3527                 }
3528
3529                 if (!netif_running(netdev)) {
3530                         result = -ENETDOWN;
3531                         goto out;
3532                 }
3533
3534                 nla_for_each_nested(nl_txq_params,
3535                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3536                                     rem_txq_params) {
3537                         result = nla_parse_nested_deprecated(tb,
3538                                                              NL80211_TXQ_ATTR_MAX,
3539                                                              nl_txq_params,
3540                                                              txq_params_policy,
3541                                                              info->extack);
3542                         if (result)
3543                                 goto out;
3544                         result = parse_txq_params(tb, &txq_params);
3545                         if (result)
3546                                 goto out;
3547
3548                         txq_params.link_id =
3549                                 nl80211_link_id_or_invalid(info->attrs);
3550
3551                         if (txq_params.link_id >= 0 &&
3552                             !(netdev->ieee80211_ptr->valid_links &
3553                               BIT(txq_params.link_id)))
3554                                 result = -ENOLINK;
3555                         else if (txq_params.link_id >= 0 &&
3556                                  !netdev->ieee80211_ptr->valid_links)
3557                                 result = -EINVAL;
3558                         else
3559                                 result = rdev_set_txq_params(rdev, netdev,
3560                                                              &txq_params);
3561                         if (result)
3562                                 goto out;
3563                 }
3564         }
3565
3566         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3567                 int link_id = nl80211_link_id_or_invalid(info->attrs);
3568
3569                 if (wdev) {
3570                         result = __nl80211_set_channel(
3571                                 rdev,
3572                                 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3573                                 info, link_id);
3574                 } else {
3575                         result = __nl80211_set_channel(rdev, netdev, info, link_id);
3576                 }
3577
3578                 if (result)
3579                         goto out;
3580         }
3581
3582         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3583                 struct wireless_dev *txp_wdev = wdev;
3584                 enum nl80211_tx_power_setting type;
3585                 int idx, mbm = 0;
3586
3587                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3588                         txp_wdev = NULL;
3589
3590                 if (!rdev->ops->set_tx_power) {
3591                         result = -EOPNOTSUPP;
3592                         goto out;
3593                 }
3594
3595                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3596                 type = nla_get_u32(info->attrs[idx]);
3597
3598                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3599                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3600                         result = -EINVAL;
3601                         goto out;
3602                 }
3603
3604                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3605                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3606                         mbm = nla_get_u32(info->attrs[idx]);
3607                 }
3608
3609                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3610                 if (result)
3611                         goto out;
3612         }
3613
3614         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3615             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3616                 u32 tx_ant, rx_ant;
3617
3618                 if ((!rdev->wiphy.available_antennas_tx &&
3619                      !rdev->wiphy.available_antennas_rx) ||
3620                     !rdev->ops->set_antenna) {
3621                         result = -EOPNOTSUPP;
3622                         goto out;
3623                 }
3624
3625                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3626                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3627
3628                 /* reject antenna configurations which don't match the
3629                  * available antenna masks, except for the "all" mask */
3630                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3631                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3632                         result = -EINVAL;
3633                         goto out;
3634                 }
3635
3636                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3637                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3638
3639                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3640                 if (result)
3641                         goto out;
3642         }
3643
3644         changed = 0;
3645
3646         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3647                 retry_short = nla_get_u8(
3648                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3649
3650                 changed |= WIPHY_PARAM_RETRY_SHORT;
3651         }
3652
3653         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3654                 retry_long = nla_get_u8(
3655                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3656
3657                 changed |= WIPHY_PARAM_RETRY_LONG;
3658         }
3659
3660         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3661                 frag_threshold = nla_get_u32(
3662                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3663                 if (frag_threshold < 256) {
3664                         result = -EINVAL;
3665                         goto out;
3666                 }
3667
3668                 if (frag_threshold != (u32) -1) {
3669                         /*
3670                          * Fragments (apart from the last one) are required to
3671                          * have even length. Make the fragmentation code
3672                          * simpler by stripping LSB should someone try to use
3673                          * odd threshold value.
3674                          */
3675                         frag_threshold &= ~0x1;
3676                 }
3677                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3678         }
3679
3680         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3681                 rts_threshold = nla_get_u32(
3682                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3683                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3684         }
3685
3686         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3687                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3688                         result = -EINVAL;
3689                         goto out;
3690                 }
3691
3692                 coverage_class = nla_get_u8(
3693                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3694                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3695         }
3696
3697         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3698                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3699                         result = -EOPNOTSUPP;
3700                         goto out;
3701                 }
3702
3703                 changed |= WIPHY_PARAM_DYN_ACK;
3704         }
3705
3706         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3707                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3708                                              NL80211_EXT_FEATURE_TXQS)) {
3709                         result = -EOPNOTSUPP;
3710                         goto out;
3711                 }
3712                 txq_limit = nla_get_u32(
3713                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3714                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3715         }
3716
3717         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3718                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3719                                              NL80211_EXT_FEATURE_TXQS)) {
3720                         result = -EOPNOTSUPP;
3721                         goto out;
3722                 }
3723                 txq_memory_limit = nla_get_u32(
3724                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3725                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3726         }
3727
3728         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3729                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3730                                              NL80211_EXT_FEATURE_TXQS)) {
3731                         result = -EOPNOTSUPP;
3732                         goto out;
3733                 }
3734                 txq_quantum = nla_get_u32(
3735                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3736                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3737         }
3738
3739         if (changed) {
3740                 u8 old_retry_short, old_retry_long;
3741                 u32 old_frag_threshold, old_rts_threshold;
3742                 u8 old_coverage_class;
3743                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3744
3745                 if (!rdev->ops->set_wiphy_params) {
3746                         result = -EOPNOTSUPP;
3747                         goto out;
3748                 }
3749
3750                 old_retry_short = rdev->wiphy.retry_short;
3751                 old_retry_long = rdev->wiphy.retry_long;
3752                 old_frag_threshold = rdev->wiphy.frag_threshold;
3753                 old_rts_threshold = rdev->wiphy.rts_threshold;
3754                 old_coverage_class = rdev->wiphy.coverage_class;
3755                 old_txq_limit = rdev->wiphy.txq_limit;
3756                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3757                 old_txq_quantum = rdev->wiphy.txq_quantum;
3758
3759                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3760                         rdev->wiphy.retry_short = retry_short;
3761                 if (changed & WIPHY_PARAM_RETRY_LONG)
3762                         rdev->wiphy.retry_long = retry_long;
3763                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3764                         rdev->wiphy.frag_threshold = frag_threshold;
3765                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3766                         rdev->wiphy.rts_threshold = rts_threshold;
3767                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3768                         rdev->wiphy.coverage_class = coverage_class;
3769                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3770                         rdev->wiphy.txq_limit = txq_limit;
3771                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3772                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3773                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3774                         rdev->wiphy.txq_quantum = txq_quantum;
3775
3776                 result = rdev_set_wiphy_params(rdev, changed);
3777                 if (result) {
3778                         rdev->wiphy.retry_short = old_retry_short;
3779                         rdev->wiphy.retry_long = old_retry_long;
3780                         rdev->wiphy.frag_threshold = old_frag_threshold;
3781                         rdev->wiphy.rts_threshold = old_rts_threshold;
3782                         rdev->wiphy.coverage_class = old_coverage_class;
3783                         rdev->wiphy.txq_limit = old_txq_limit;
3784                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3785                         rdev->wiphy.txq_quantum = old_txq_quantum;
3786                         goto out;
3787                 }
3788         }
3789
3790         result = 0;
3791
3792 out:
3793         wiphy_unlock(&rdev->wiphy);
3794         return result;
3795 }
3796
3797 int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef)
3798 {
3799         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3800                 return -EINVAL;
3801
3802         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3803                         chandef->chan->center_freq))
3804                 return -ENOBUFS;
3805         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3806                         chandef->chan->freq_offset))
3807                 return -ENOBUFS;
3808         switch (chandef->width) {
3809         case NL80211_CHAN_WIDTH_20_NOHT:
3810         case NL80211_CHAN_WIDTH_20:
3811         case NL80211_CHAN_WIDTH_40:
3812                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3813                                 cfg80211_get_chandef_type(chandef)))
3814                         return -ENOBUFS;
3815                 break;
3816         default:
3817                 break;
3818         }
3819         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3820                 return -ENOBUFS;
3821         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3822                 return -ENOBUFS;
3823         if (chandef->center_freq2 &&
3824             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3825                 return -ENOBUFS;
3826         if (chandef->punctured &&
3827             nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, chandef->punctured))
3828                 return -ENOBUFS;
3829
3830         return 0;
3831 }
3832 EXPORT_SYMBOL(nl80211_send_chandef);
3833
3834 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3835                               struct cfg80211_registered_device *rdev,
3836                               struct wireless_dev *wdev,
3837                               enum nl80211_commands cmd)
3838 {
3839         struct net_device *dev = wdev->netdev;
3840         void *hdr;
3841
3842         lockdep_assert_wiphy(&rdev->wiphy);
3843
3844         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3845                 cmd != NL80211_CMD_DEL_INTERFACE &&
3846                 cmd != NL80211_CMD_SET_INTERFACE);
3847
3848         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3849         if (!hdr)
3850                 return -1;
3851
3852         if (dev &&
3853             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3854              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3855                 goto nla_put_failure;
3856
3857         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3858             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3859             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3860                               NL80211_ATTR_PAD) ||
3861             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3862             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3863                         rdev->devlist_generation ^
3864                         (cfg80211_rdev_list_generation << 2)) ||
3865             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3866                 goto nla_put_failure;
3867
3868         if (rdev->ops->get_channel && !wdev->valid_links) {
3869                 struct cfg80211_chan_def chandef = {};
3870                 int ret;
3871
3872                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3873                 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3874                         goto nla_put_failure;
3875         }
3876
3877         if (rdev->ops->get_tx_power) {
3878                 int dbm, ret;
3879
3880                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3881                 if (ret == 0 &&
3882                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3883                                 DBM_TO_MBM(dbm)))
3884                         goto nla_put_failure;
3885         }
3886
3887         switch (wdev->iftype) {
3888         case NL80211_IFTYPE_AP:
3889         case NL80211_IFTYPE_P2P_GO:
3890                 if (wdev->u.ap.ssid_len &&
3891                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3892                             wdev->u.ap.ssid))
3893                         goto nla_put_failure;
3894                 break;
3895         case NL80211_IFTYPE_STATION:
3896         case NL80211_IFTYPE_P2P_CLIENT:
3897                 if (wdev->u.client.ssid_len &&
3898                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3899                             wdev->u.client.ssid))
3900                         goto nla_put_failure;
3901                 break;
3902         case NL80211_IFTYPE_ADHOC:
3903                 if (wdev->u.ibss.ssid_len &&
3904                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3905                             wdev->u.ibss.ssid))
3906                         goto nla_put_failure;
3907                 break;
3908         default:
3909                 /* nothing */
3910                 break;
3911         }
3912
3913         if (rdev->ops->get_txq_stats) {
3914                 struct cfg80211_txq_stats txqstats = {};
3915                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3916
3917                 if (ret == 0 &&
3918                     !nl80211_put_txq_stats(msg, &txqstats,
3919                                            NL80211_ATTR_TXQ_STATS))
3920                         goto nla_put_failure;
3921         }
3922
3923         if (wdev->valid_links) {
3924                 unsigned int link_id;
3925                 struct nlattr *links = nla_nest_start(msg,
3926                                                       NL80211_ATTR_MLO_LINKS);
3927
3928                 if (!links)
3929                         goto nla_put_failure;
3930
3931                 for_each_valid_link(wdev, link_id) {
3932                         struct nlattr *link = nla_nest_start(msg, link_id + 1);
3933                         struct cfg80211_chan_def chandef = {};
3934                         int ret;
3935
3936                         if (!link)
3937                                 goto nla_put_failure;
3938
3939                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3940                                 goto nla_put_failure;
3941                         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3942                                     wdev->links[link_id].addr))
3943                                 goto nla_put_failure;
3944
3945                         ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3946                         if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3947                                 goto nla_put_failure;
3948
3949                         nla_nest_end(msg, link);
3950                 }
3951
3952                 nla_nest_end(msg, links);
3953         }
3954
3955         genlmsg_end(msg, hdr);
3956         return 0;
3957
3958  nla_put_failure:
3959         genlmsg_cancel(msg, hdr);
3960         return -EMSGSIZE;
3961 }
3962
3963 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3964 {
3965         int wp_idx = 0;
3966         int if_idx = 0;
3967         int wp_start = cb->args[0];
3968         int if_start = cb->args[1];
3969         int filter_wiphy = -1;
3970         struct cfg80211_registered_device *rdev;
3971         struct wireless_dev *wdev;
3972         int ret;
3973
3974         rtnl_lock();
3975         if (!cb->args[2]) {
3976                 struct nl80211_dump_wiphy_state state = {
3977                         .filter_wiphy = -1,
3978                 };
3979
3980                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3981                 if (ret)
3982                         goto out_unlock;
3983
3984                 filter_wiphy = state.filter_wiphy;
3985
3986                 /*
3987                  * if filtering, set cb->args[2] to +1 since 0 is the default
3988                  * value needed to determine that parsing is necessary.
3989                  */
3990                 if (filter_wiphy >= 0)
3991                         cb->args[2] = filter_wiphy + 1;
3992                 else
3993                         cb->args[2] = -1;
3994         } else if (cb->args[2] > 0) {
3995                 filter_wiphy = cb->args[2] - 1;
3996         }
3997
3998         for_each_rdev(rdev) {
3999                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
4000                         continue;
4001                 if (wp_idx < wp_start) {
4002                         wp_idx++;
4003                         continue;
4004                 }
4005
4006                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
4007                         continue;
4008
4009                 if_idx = 0;
4010
4011                 wiphy_lock(&rdev->wiphy);
4012                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4013                         if (if_idx < if_start) {
4014                                 if_idx++;
4015                                 continue;
4016                         }
4017                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
4018                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
4019                                                rdev, wdev,
4020                                                NL80211_CMD_NEW_INTERFACE) < 0) {
4021                                 wiphy_unlock(&rdev->wiphy);
4022                                 goto out;
4023                         }
4024                         if_idx++;
4025                 }
4026                 wiphy_unlock(&rdev->wiphy);
4027
4028                 if_start = 0;
4029                 wp_idx++;
4030         }
4031  out:
4032         cb->args[0] = wp_idx;
4033         cb->args[1] = if_idx;
4034
4035         ret = skb->len;
4036  out_unlock:
4037         rtnl_unlock();
4038
4039         return ret;
4040 }
4041
4042 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
4043 {
4044         struct sk_buff *msg;
4045         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4046         struct wireless_dev *wdev = info->user_ptr[1];
4047
4048         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4049         if (!msg)
4050                 return -ENOMEM;
4051
4052         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4053                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4054                 nlmsg_free(msg);
4055                 return -ENOBUFS;
4056         }
4057
4058         return genlmsg_reply(msg, info);
4059 }
4060
4061 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
4062         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
4063         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
4064         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
4065         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
4066         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
4067         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
4068 };
4069
4070 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4071 {
4072         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4073         int flag;
4074
4075         *mntrflags = 0;
4076
4077         if (!nla)
4078                 return -EINVAL;
4079
4080         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4081                 return -EINVAL;
4082
4083         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4084                 if (flags[flag])
4085                         *mntrflags |= (1<<flag);
4086
4087         *mntrflags |= MONITOR_FLAG_CHANGED;
4088
4089         return 0;
4090 }
4091
4092 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4093                                      enum nl80211_iftype type,
4094                                      struct genl_info *info,
4095                                      struct vif_params *params)
4096 {
4097         bool change = false;
4098         int err;
4099
4100         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4101                 if (type != NL80211_IFTYPE_MONITOR)
4102                         return -EINVAL;
4103
4104                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4105                                           &params->flags);
4106                 if (err)
4107                         return err;
4108
4109                 change = true;
4110         }
4111
4112         if (params->flags & MONITOR_FLAG_ACTIVE &&
4113             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4114                 return -EOPNOTSUPP;
4115
4116         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4117                 const u8 *mumimo_groups;
4118                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4119
4120                 if (type != NL80211_IFTYPE_MONITOR)
4121                         return -EINVAL;
4122
4123                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4124                         return -EOPNOTSUPP;
4125
4126                 mumimo_groups =
4127                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4128
4129                 /* bits 0 and 63 are reserved and must be zero */
4130                 if ((mumimo_groups[0] & BIT(0)) ||
4131                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4132                         return -EINVAL;
4133
4134                 params->vht_mumimo_groups = mumimo_groups;
4135                 change = true;
4136         }
4137
4138         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4139                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4140
4141                 if (type != NL80211_IFTYPE_MONITOR)
4142                         return -EINVAL;
4143
4144                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4145                         return -EOPNOTSUPP;
4146
4147                 params->vht_mumimo_follow_addr =
4148                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4149                 change = true;
4150         }
4151
4152         return change ? 1 : 0;
4153 }
4154
4155 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4156                                struct net_device *netdev, u8 use_4addr,
4157                                enum nl80211_iftype iftype)
4158 {
4159         if (!use_4addr) {
4160                 if (netdev && netif_is_bridge_port(netdev))
4161                         return -EBUSY;
4162                 return 0;
4163         }
4164
4165         switch (iftype) {
4166         case NL80211_IFTYPE_AP_VLAN:
4167                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4168                         return 0;
4169                 break;
4170         case NL80211_IFTYPE_STATION:
4171                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4172                         return 0;
4173                 break;
4174         default:
4175                 break;
4176         }
4177
4178         return -EOPNOTSUPP;
4179 }
4180
4181 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4182 {
4183         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4184         struct vif_params params;
4185         int err;
4186         enum nl80211_iftype otype, ntype;
4187         struct net_device *dev = info->user_ptr[1];
4188         bool change = false;
4189
4190         memset(&params, 0, sizeof(params));
4191
4192         otype = ntype = dev->ieee80211_ptr->iftype;
4193
4194         if (info->attrs[NL80211_ATTR_IFTYPE]) {
4195                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4196                 if (otype != ntype)
4197                         change = true;
4198         }
4199
4200         if (info->attrs[NL80211_ATTR_MESH_ID]) {
4201                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4202
4203                 if (ntype != NL80211_IFTYPE_MESH_POINT)
4204                         return -EINVAL;
4205                 if (otype != NL80211_IFTYPE_MESH_POINT)
4206                         return -EINVAL;
4207                 if (netif_running(dev))
4208                         return -EBUSY;
4209
4210                 wdev->u.mesh.id_up_len =
4211                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4212                 memcpy(wdev->u.mesh.id,
4213                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4214                        wdev->u.mesh.id_up_len);
4215         }
4216
4217         if (info->attrs[NL80211_ATTR_4ADDR]) {
4218                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4219                 change = true;
4220                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4221                 if (err)
4222                         return err;
4223         } else {
4224                 params.use_4addr = -1;
4225         }
4226
4227         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
4228         if (err < 0)
4229                 return err;
4230         if (err > 0)
4231                 change = true;
4232
4233         if (change)
4234                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
4235         else
4236                 err = 0;
4237
4238         if (!err && params.use_4addr != -1)
4239                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4240
4241         if (change && !err) {
4242                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4243
4244                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4245         }
4246
4247         return err;
4248 }
4249
4250 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4251 {
4252         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4253         struct vif_params params;
4254         struct wireless_dev *wdev;
4255         struct sk_buff *msg;
4256         int err;
4257         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4258
4259         memset(&params, 0, sizeof(params));
4260
4261         if (!info->attrs[NL80211_ATTR_IFNAME])
4262                 return -EINVAL;
4263
4264         if (info->attrs[NL80211_ATTR_IFTYPE])
4265                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4266
4267         if (!rdev->ops->add_virtual_intf)
4268                 return -EOPNOTSUPP;
4269
4270         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4271              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4272             info->attrs[NL80211_ATTR_MAC]) {
4273                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4274                            ETH_ALEN);
4275                 if (!is_valid_ether_addr(params.macaddr))
4276                         return -EADDRNOTAVAIL;
4277         }
4278
4279         if (info->attrs[NL80211_ATTR_4ADDR]) {
4280                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4281                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4282                 if (err)
4283                         return err;
4284         }
4285
4286         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4287                 return -EOPNOTSUPP;
4288
4289         err = nl80211_parse_mon_options(rdev, type, info, &params);
4290         if (err < 0)
4291                 return err;
4292
4293         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4294         if (!msg)
4295                 return -ENOMEM;
4296
4297         wdev = rdev_add_virtual_intf(rdev,
4298                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4299                                 NET_NAME_USER, type, &params);
4300         if (WARN_ON(!wdev)) {
4301                 nlmsg_free(msg);
4302                 return -EPROTO;
4303         } else if (IS_ERR(wdev)) {
4304                 nlmsg_free(msg);
4305                 return PTR_ERR(wdev);
4306         }
4307
4308         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4309                 wdev->owner_nlportid = info->snd_portid;
4310
4311         switch (type) {
4312         case NL80211_IFTYPE_MESH_POINT:
4313                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4314                         break;
4315                 wdev->u.mesh.id_up_len =
4316                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4317                 memcpy(wdev->u.mesh.id,
4318                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4319                        wdev->u.mesh.id_up_len);
4320                 break;
4321         case NL80211_IFTYPE_NAN:
4322         case NL80211_IFTYPE_P2P_DEVICE:
4323                 /*
4324                  * P2P Device and NAN do not have a netdev, so don't go
4325                  * through the netdev notifier and must be added here
4326                  */
4327                 cfg80211_init_wdev(wdev);
4328                 cfg80211_register_wdev(rdev, wdev);
4329                 break;
4330         default:
4331                 break;
4332         }
4333
4334         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4335                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4336                 nlmsg_free(msg);
4337                 return -ENOBUFS;
4338         }
4339
4340         return genlmsg_reply(msg, info);
4341 }
4342
4343 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4344 {
4345         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4346         int ret;
4347
4348         /* to avoid failing a new interface creation due to pending removal */
4349         cfg80211_destroy_ifaces(rdev);
4350
4351         wiphy_lock(&rdev->wiphy);
4352         ret = _nl80211_new_interface(skb, info);
4353         wiphy_unlock(&rdev->wiphy);
4354
4355         return ret;
4356 }
4357
4358 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4359 {
4360         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4361         struct wireless_dev *wdev = info->user_ptr[1];
4362
4363         if (!rdev->ops->del_virtual_intf)
4364                 return -EOPNOTSUPP;
4365
4366         /*
4367          * We hold RTNL, so this is safe, without RTNL opencount cannot
4368          * reach 0, and thus the rdev cannot be deleted.
4369          *
4370          * We need to do it for the dev_close(), since that will call
4371          * the netdev notifiers, and we need to acquire the mutex there
4372          * but don't know if we get there from here or from some other
4373          * place (e.g. "ip link set ... down").
4374          */
4375         mutex_unlock(&rdev->wiphy.mtx);
4376
4377         /*
4378          * If we remove a wireless device without a netdev then clear
4379          * user_ptr[1] so that nl80211_post_doit won't dereference it
4380          * to check if it needs to do dev_put(). Otherwise it crashes
4381          * since the wdev has been freed, unlike with a netdev where
4382          * we need the dev_put() for the netdev to really be freed.
4383          */
4384         if (!wdev->netdev)
4385                 info->user_ptr[1] = NULL;
4386         else
4387                 dev_close(wdev->netdev);
4388
4389         mutex_lock(&rdev->wiphy.mtx);
4390
4391         return cfg80211_remove_virtual_intf(rdev, wdev);
4392 }
4393
4394 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4395 {
4396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4397         struct net_device *dev = info->user_ptr[1];
4398         u16 noack_map;
4399
4400         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4401                 return -EINVAL;
4402
4403         if (!rdev->ops->set_noack_map)
4404                 return -EOPNOTSUPP;
4405
4406         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4407
4408         return rdev_set_noack_map(rdev, dev, noack_map);
4409 }
4410
4411 static int nl80211_validate_key_link_id(struct genl_info *info,
4412                                         struct wireless_dev *wdev,
4413                                         int link_id, bool pairwise)
4414 {
4415         if (pairwise) {
4416                 if (link_id != -1) {
4417                         GENL_SET_ERR_MSG(info,
4418                                          "link ID not allowed for pairwise key");
4419                         return -EINVAL;
4420                 }
4421
4422                 return 0;
4423         }
4424
4425         if (wdev->valid_links) {
4426                 if (link_id == -1) {
4427                         GENL_SET_ERR_MSG(info,
4428                                          "link ID must for MLO group key");
4429                         return -EINVAL;
4430                 }
4431                 if (!(wdev->valid_links & BIT(link_id))) {
4432                         GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4433                         return -EINVAL;
4434                 }
4435         } else if (link_id != -1) {
4436                 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4437                 return -EINVAL;
4438         }
4439
4440         return 0;
4441 }
4442
4443 struct get_key_cookie {
4444         struct sk_buff *msg;
4445         int error;
4446         int idx;
4447 };
4448
4449 static void get_key_callback(void *c, struct key_params *params)
4450 {
4451         struct nlattr *key;
4452         struct get_key_cookie *cookie = c;
4453
4454         if ((params->key &&
4455              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4456                      params->key_len, params->key)) ||
4457             (params->seq &&
4458              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4459                      params->seq_len, params->seq)) ||
4460             (params->cipher &&
4461              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4462                          params->cipher)))
4463                 goto nla_put_failure;
4464
4465         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4466         if (!key)
4467                 goto nla_put_failure;
4468
4469         if ((params->key &&
4470              nla_put(cookie->msg, NL80211_KEY_DATA,
4471                      params->key_len, params->key)) ||
4472             (params->seq &&
4473              nla_put(cookie->msg, NL80211_KEY_SEQ,
4474                      params->seq_len, params->seq)) ||
4475             (params->cipher &&
4476              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4477                          params->cipher)))
4478                 goto nla_put_failure;
4479
4480         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4481                 goto nla_put_failure;
4482
4483         nla_nest_end(cookie->msg, key);
4484
4485         return;
4486  nla_put_failure:
4487         cookie->error = 1;
4488 }
4489
4490 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4491 {
4492         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4493         int err;
4494         struct net_device *dev = info->user_ptr[1];
4495         u8 key_idx = 0;
4496         const u8 *mac_addr = NULL;
4497         bool pairwise;
4498         struct get_key_cookie cookie = {
4499                 .error = 0,
4500         };
4501         void *hdr;
4502         struct sk_buff *msg;
4503         bool bigtk_support = false;
4504         int link_id = nl80211_link_id_or_invalid(info->attrs);
4505         struct wireless_dev *wdev = dev->ieee80211_ptr;
4506
4507         if (wiphy_ext_feature_isset(&rdev->wiphy,
4508                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4509                 bigtk_support = true;
4510
4511         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4512              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4513             wiphy_ext_feature_isset(&rdev->wiphy,
4514                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4515                 bigtk_support = true;
4516
4517         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4518                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4519
4520                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4521                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4522                         return -EINVAL;
4523                 }
4524         }
4525
4526         if (info->attrs[NL80211_ATTR_MAC])
4527                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4528
4529         pairwise = !!mac_addr;
4530         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4531                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4532
4533                 if (kt != NL80211_KEYTYPE_GROUP &&
4534                     kt != NL80211_KEYTYPE_PAIRWISE)
4535                         return -EINVAL;
4536                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4537         }
4538
4539         if (!rdev->ops->get_key)
4540                 return -EOPNOTSUPP;
4541
4542         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4543                 return -ENOENT;
4544
4545         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4546         if (!msg)
4547                 return -ENOMEM;
4548
4549         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4550                              NL80211_CMD_NEW_KEY);
4551         if (!hdr)
4552                 goto nla_put_failure;
4553
4554         cookie.msg = msg;
4555         cookie.idx = key_idx;
4556
4557         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4558             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4559                 goto nla_put_failure;
4560         if (mac_addr &&
4561             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4562                 goto nla_put_failure;
4563
4564         err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4565         if (err)
4566                 goto free_msg;
4567
4568         err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4569                            &cookie, get_key_callback);
4570
4571         if (err)
4572                 goto free_msg;
4573
4574         if (cookie.error)
4575                 goto nla_put_failure;
4576
4577         genlmsg_end(msg, hdr);
4578         return genlmsg_reply(msg, info);
4579
4580  nla_put_failure:
4581         err = -ENOBUFS;
4582  free_msg:
4583         nlmsg_free(msg);
4584         return err;
4585 }
4586
4587 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4588 {
4589         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4590         struct key_parse key;
4591         int err;
4592         struct net_device *dev = info->user_ptr[1];
4593         int link_id = nl80211_link_id_or_invalid(info->attrs);
4594         struct wireless_dev *wdev = dev->ieee80211_ptr;
4595
4596         err = nl80211_parse_key(info, &key);
4597         if (err)
4598                 return err;
4599
4600         if (key.idx < 0)
4601                 return -EINVAL;
4602
4603         /* Only support setting default key and
4604          * Extended Key ID action NL80211_KEY_SET_TX.
4605          */
4606         if (!key.def && !key.defmgmt && !key.defbeacon &&
4607             !(key.p.mode == NL80211_KEY_SET_TX))
4608                 return -EINVAL;
4609
4610         if (key.def) {
4611                 if (!rdev->ops->set_default_key)
4612                         return -EOPNOTSUPP;
4613
4614                 err = nl80211_key_allowed(wdev);
4615                 if (err)
4616                         return err;
4617
4618                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4619                 if (err)
4620                         return err;
4621
4622                 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4623                                            key.def_uni, key.def_multi);
4624
4625                 if (err)
4626                         return err;
4627
4628 #ifdef CONFIG_CFG80211_WEXT
4629                 wdev->wext.default_key = key.idx;
4630 #endif
4631                 return 0;
4632         } else if (key.defmgmt) {
4633                 if (key.def_uni || !key.def_multi)
4634                         return -EINVAL;
4635
4636                 if (!rdev->ops->set_default_mgmt_key)
4637                         return -EOPNOTSUPP;
4638
4639                 err = nl80211_key_allowed(wdev);
4640                 if (err)
4641                         return err;
4642
4643                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4644                 if (err)
4645                         return err;
4646
4647                 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4648                 if (err)
4649                         return err;
4650
4651 #ifdef CONFIG_CFG80211_WEXT
4652                 wdev->wext.default_mgmt_key = key.idx;
4653 #endif
4654                 return 0;
4655         } else if (key.defbeacon) {
4656                 if (key.def_uni || !key.def_multi)
4657                         return -EINVAL;
4658
4659                 if (!rdev->ops->set_default_beacon_key)
4660                         return -EOPNOTSUPP;
4661
4662                 err = nl80211_key_allowed(wdev);
4663                 if (err)
4664                         return err;
4665
4666                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4667                 if (err)
4668                         return err;
4669
4670                 return rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
4671         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4672                    wiphy_ext_feature_isset(&rdev->wiphy,
4673                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4674                 u8 *mac_addr = NULL;
4675
4676                 if (info->attrs[NL80211_ATTR_MAC])
4677                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4678
4679                 if (!mac_addr || key.idx < 0 || key.idx > 1)
4680                         return -EINVAL;
4681
4682                 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4683                 if (err)
4684                         return err;
4685
4686                 return rdev_add_key(rdev, dev, link_id, key.idx,
4687                                     NL80211_KEYTYPE_PAIRWISE,
4688                                     mac_addr, &key.p);
4689         }
4690
4691         return -EINVAL;
4692 }
4693
4694 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4695 {
4696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4697         int err;
4698         struct net_device *dev = info->user_ptr[1];
4699         struct key_parse key;
4700         const u8 *mac_addr = NULL;
4701         int link_id = nl80211_link_id_or_invalid(info->attrs);
4702         struct wireless_dev *wdev = dev->ieee80211_ptr;
4703
4704         err = nl80211_parse_key(info, &key);
4705         if (err)
4706                 return err;
4707
4708         if (!key.p.key) {
4709                 GENL_SET_ERR_MSG(info, "no key");
4710                 return -EINVAL;
4711         }
4712
4713         if (info->attrs[NL80211_ATTR_MAC])
4714                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4715
4716         if (key.type == -1) {
4717                 if (mac_addr)
4718                         key.type = NL80211_KEYTYPE_PAIRWISE;
4719                 else
4720                         key.type = NL80211_KEYTYPE_GROUP;
4721         }
4722
4723         /* for now */
4724         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4725             key.type != NL80211_KEYTYPE_GROUP) {
4726                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4727                 return -EINVAL;
4728         }
4729
4730         if (key.type == NL80211_KEYTYPE_GROUP &&
4731             info->attrs[NL80211_ATTR_VLAN_ID])
4732                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4733
4734         if (!rdev->ops->add_key)
4735                 return -EOPNOTSUPP;
4736
4737         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4738                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4739                                            mac_addr)) {
4740                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4741                 return -EINVAL;
4742         }
4743
4744         err = nl80211_key_allowed(wdev);
4745         if (err)
4746                 GENL_SET_ERR_MSG(info, "key not allowed");
4747
4748         if (!err)
4749                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4750                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4751
4752         if (!err) {
4753                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4754                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4755                                     mac_addr, &key.p);
4756                 if (err)
4757                         GENL_SET_ERR_MSG(info, "key addition failed");
4758         }
4759
4760         return err;
4761 }
4762
4763 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4764 {
4765         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4766         int err;
4767         struct net_device *dev = info->user_ptr[1];
4768         u8 *mac_addr = NULL;
4769         struct key_parse key;
4770         int link_id = nl80211_link_id_or_invalid(info->attrs);
4771         struct wireless_dev *wdev = dev->ieee80211_ptr;
4772
4773         err = nl80211_parse_key(info, &key);
4774         if (err)
4775                 return err;
4776
4777         if (info->attrs[NL80211_ATTR_MAC])
4778                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4779
4780         if (key.type == -1) {
4781                 if (mac_addr)
4782                         key.type = NL80211_KEYTYPE_PAIRWISE;
4783                 else
4784                         key.type = NL80211_KEYTYPE_GROUP;
4785         }
4786
4787         /* for now */
4788         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4789             key.type != NL80211_KEYTYPE_GROUP)
4790                 return -EINVAL;
4791
4792         if (!cfg80211_valid_key_idx(rdev, key.idx,
4793                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4794                 return -EINVAL;
4795
4796         if (!rdev->ops->del_key)
4797                 return -EOPNOTSUPP;
4798
4799         err = nl80211_key_allowed(wdev);
4800
4801         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4802             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4803                 err = -ENOENT;
4804
4805         if (!err)
4806                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4807                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4808
4809         if (!err)
4810                 err = rdev_del_key(rdev, dev, link_id, key.idx,
4811                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4812                                    mac_addr);
4813
4814 #ifdef CONFIG_CFG80211_WEXT
4815         if (!err) {
4816                 if (key.idx == wdev->wext.default_key)
4817                         wdev->wext.default_key = -1;
4818                 else if (key.idx == wdev->wext.default_mgmt_key)
4819                         wdev->wext.default_mgmt_key = -1;
4820         }
4821 #endif
4822
4823         return err;
4824 }
4825
4826 /* This function returns an error or the number of nested attributes */
4827 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4828 {
4829         struct nlattr *attr;
4830         int n_entries = 0, tmp;
4831
4832         nla_for_each_nested(attr, nl_attr, tmp) {
4833                 if (nla_len(attr) != ETH_ALEN)
4834                         return -EINVAL;
4835
4836                 n_entries++;
4837         }
4838
4839         return n_entries;
4840 }
4841
4842 /*
4843  * This function parses ACL information and allocates memory for ACL data.
4844  * On successful return, the calling function is responsible to free the
4845  * ACL buffer returned by this function.
4846  */
4847 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4848                                                 struct genl_info *info)
4849 {
4850         enum nl80211_acl_policy acl_policy;
4851         struct nlattr *attr;
4852         struct cfg80211_acl_data *acl;
4853         int i = 0, n_entries, tmp;
4854
4855         if (!wiphy->max_acl_mac_addrs)
4856                 return ERR_PTR(-EOPNOTSUPP);
4857
4858         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4859                 return ERR_PTR(-EINVAL);
4860
4861         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4862         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4863             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4864                 return ERR_PTR(-EINVAL);
4865
4866         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4867                 return ERR_PTR(-EINVAL);
4868
4869         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4870         if (n_entries < 0)
4871                 return ERR_PTR(n_entries);
4872
4873         if (n_entries > wiphy->max_acl_mac_addrs)
4874                 return ERR_PTR(-EOPNOTSUPP);
4875
4876         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4877         if (!acl)
4878                 return ERR_PTR(-ENOMEM);
4879         acl->n_acl_entries = n_entries;
4880
4881         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4882                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4883                 i++;
4884         }
4885         acl->acl_policy = acl_policy;
4886
4887         return acl;
4888 }
4889
4890 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4891 {
4892         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4893         struct net_device *dev = info->user_ptr[1];
4894         struct cfg80211_acl_data *acl;
4895         int err;
4896
4897         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4898             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4899                 return -EOPNOTSUPP;
4900
4901         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4902                 return -EINVAL;
4903
4904         acl = parse_acl_data(&rdev->wiphy, info);
4905         if (IS_ERR(acl))
4906                 return PTR_ERR(acl);
4907
4908         err = rdev_set_mac_acl(rdev, dev, acl);
4909
4910         kfree(acl);
4911
4912         return err;
4913 }
4914
4915 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4916                            u8 *rates, u8 rates_len)
4917 {
4918         u8 i;
4919         u32 mask = 0;
4920
4921         for (i = 0; i < rates_len; i++) {
4922                 int rate = (rates[i] & 0x7f) * 5;
4923                 int ridx;
4924
4925                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4926                         struct ieee80211_rate *srate =
4927                                 &sband->bitrates[ridx];
4928                         if (rate == srate->bitrate) {
4929                                 mask |= 1 << ridx;
4930                                 break;
4931                         }
4932                 }
4933                 if (ridx == sband->n_bitrates)
4934                         return 0; /* rate not found */
4935         }
4936
4937         return mask;
4938 }
4939
4940 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4941                                u8 *rates, u8 rates_len,
4942                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4943 {
4944         u8 i;
4945
4946         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4947
4948         for (i = 0; i < rates_len; i++) {
4949                 int ridx, rbit;
4950
4951                 ridx = rates[i] / 8;
4952                 rbit = BIT(rates[i] % 8);
4953
4954                 /* check validity */
4955                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4956                         return false;
4957
4958                 /* check availability */
4959                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4960                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4961                         mcs[ridx] |= rbit;
4962                 else
4963                         return false;
4964         }
4965
4966         return true;
4967 }
4968
4969 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4970 {
4971         u16 mcs_mask = 0;
4972
4973         switch (vht_mcs_map) {
4974         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4975                 break;
4976         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4977                 mcs_mask = 0x00FF;
4978                 break;
4979         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4980                 mcs_mask = 0x01FF;
4981                 break;
4982         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4983                 mcs_mask = 0x03FF;
4984                 break;
4985         default:
4986                 break;
4987         }
4988
4989         return mcs_mask;
4990 }
4991
4992 static void vht_build_mcs_mask(u16 vht_mcs_map,
4993                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4994 {
4995         u8 nss;
4996
4997         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4998                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4999                 vht_mcs_map >>= 2;
5000         }
5001 }
5002
5003 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
5004                              struct nl80211_txrate_vht *txrate,
5005                              u16 mcs[NL80211_VHT_NSS_MAX])
5006 {
5007         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5008         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
5009         u8 i;
5010
5011         if (!sband->vht_cap.vht_supported)
5012                 return false;
5013
5014         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
5015
5016         /* Build vht_mcs_mask from VHT capabilities */
5017         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5018
5019         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5020                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5021                         mcs[i] = txrate->mcs[i];
5022                 else
5023                         return false;
5024         }
5025
5026         return true;
5027 }
5028
5029 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
5030 {
5031         switch (he_mcs_map) {
5032         case IEEE80211_HE_MCS_NOT_SUPPORTED:
5033                 return 0;
5034         case IEEE80211_HE_MCS_SUPPORT_0_7:
5035                 return 0x00FF;
5036         case IEEE80211_HE_MCS_SUPPORT_0_9:
5037                 return 0x03FF;
5038         case IEEE80211_HE_MCS_SUPPORT_0_11:
5039                 return 0xFFF;
5040         default:
5041                 break;
5042         }
5043         return 0;
5044 }
5045
5046 static void he_build_mcs_mask(u16 he_mcs_map,
5047                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5048 {
5049         u8 nss;
5050
5051         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5052                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5053                 he_mcs_map >>= 2;
5054         }
5055 }
5056
5057 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5058                            const struct ieee80211_sta_he_cap *he_cap)
5059 {
5060         struct net_device *dev = info->user_ptr[1];
5061         struct wireless_dev *wdev = dev->ieee80211_ptr;
5062         struct cfg80211_chan_def *chandef;
5063         __le16 tx_mcs;
5064
5065         chandef = wdev_chandef(wdev, link_id);
5066         if (!chandef) {
5067                 /*
5068                  * This is probably broken, but we never maintained
5069                  * a chandef in these cases, so it always was.
5070                  */
5071                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5072         }
5073
5074         switch (chandef->width) {
5075         case NL80211_CHAN_WIDTH_80P80:
5076                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5077                 break;
5078         case NL80211_CHAN_WIDTH_160:
5079                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5080                 break;
5081         default:
5082                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5083                 break;
5084         }
5085
5086         return le16_to_cpu(tx_mcs);
5087 }
5088
5089 static bool he_set_mcs_mask(struct genl_info *info,
5090                             struct wireless_dev *wdev,
5091                             struct ieee80211_supported_band *sband,
5092                             struct nl80211_txrate_he *txrate,
5093                             u16 mcs[NL80211_HE_NSS_MAX],
5094                             unsigned int link_id)
5095 {
5096         const struct ieee80211_sta_he_cap *he_cap;
5097         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5098         u16 tx_mcs_map = 0;
5099         u8 i;
5100
5101         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5102         if (!he_cap)
5103                 return false;
5104
5105         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5106
5107         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5108
5109         /* Build he_mcs_mask from HE capabilities */
5110         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5111
5112         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5113                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5114                         mcs[i] = txrate->mcs[i];
5115                 else
5116                         return false;
5117         }
5118
5119         return true;
5120 }
5121
5122 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5123                                          struct nlattr *attrs[],
5124                                          enum nl80211_attrs attr,
5125                                          struct cfg80211_bitrate_mask *mask,
5126                                          struct net_device *dev,
5127                                          bool default_all_enabled,
5128                                          unsigned int link_id)
5129 {
5130         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5131         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5132         struct wireless_dev *wdev = dev->ieee80211_ptr;
5133         int rem, i;
5134         struct nlattr *tx_rates;
5135         struct ieee80211_supported_band *sband;
5136         u16 vht_tx_mcs_map, he_tx_mcs_map;
5137
5138         memset(mask, 0, sizeof(*mask));
5139         /* Default to all rates enabled */
5140         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5141                 const struct ieee80211_sta_he_cap *he_cap;
5142
5143                 if (!default_all_enabled)
5144                         break;
5145
5146                 sband = rdev->wiphy.bands[i];
5147
5148                 if (!sband)
5149                         continue;
5150
5151                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5152                 memcpy(mask->control[i].ht_mcs,
5153                        sband->ht_cap.mcs.rx_mask,
5154                        sizeof(mask->control[i].ht_mcs));
5155
5156                 if (sband->vht_cap.vht_supported) {
5157                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5158                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5159                 }
5160
5161                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5162                 if (!he_cap)
5163                         continue;
5164
5165                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5166                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5167
5168                 mask->control[i].he_gi = 0xFF;
5169                 mask->control[i].he_ltf = 0xFF;
5170         }
5171
5172         /* if no rates are given set it back to the defaults */
5173         if (!attrs[attr])
5174                 goto out;
5175
5176         /* The nested attribute uses enum nl80211_band as the index. This maps
5177          * directly to the enum nl80211_band values used in cfg80211.
5178          */
5179         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5180         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5181                 enum nl80211_band band = nla_type(tx_rates);
5182                 int err;
5183
5184                 if (band < 0 || band >= NUM_NL80211_BANDS)
5185                         return -EINVAL;
5186                 sband = rdev->wiphy.bands[band];
5187                 if (sband == NULL)
5188                         return -EINVAL;
5189                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5190                                                   tx_rates,
5191                                                   nl80211_txattr_policy,
5192                                                   info->extack);
5193                 if (err)
5194                         return err;
5195                 if (tb[NL80211_TXRATE_LEGACY]) {
5196                         mask->control[band].legacy = rateset_to_mask(
5197                                 sband,
5198                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5199                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5200                         if ((mask->control[band].legacy == 0) &&
5201                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5202                                 return -EINVAL;
5203                 }
5204                 if (tb[NL80211_TXRATE_HT]) {
5205                         if (!ht_rateset_to_mask(
5206                                         sband,
5207                                         nla_data(tb[NL80211_TXRATE_HT]),
5208                                         nla_len(tb[NL80211_TXRATE_HT]),
5209                                         mask->control[band].ht_mcs))
5210                                 return -EINVAL;
5211                 }
5212
5213                 if (tb[NL80211_TXRATE_VHT]) {
5214                         if (!vht_set_mcs_mask(
5215                                         sband,
5216                                         nla_data(tb[NL80211_TXRATE_VHT]),
5217                                         mask->control[band].vht_mcs))
5218                                 return -EINVAL;
5219                 }
5220
5221                 if (tb[NL80211_TXRATE_GI]) {
5222                         mask->control[band].gi =
5223                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5224                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5225                                 return -EINVAL;
5226                 }
5227                 if (tb[NL80211_TXRATE_HE] &&
5228                     !he_set_mcs_mask(info, wdev, sband,
5229                                      nla_data(tb[NL80211_TXRATE_HE]),
5230                                      mask->control[band].he_mcs,
5231                                      link_id))
5232                         return -EINVAL;
5233
5234                 if (tb[NL80211_TXRATE_HE_GI])
5235                         mask->control[band].he_gi =
5236                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5237                 if (tb[NL80211_TXRATE_HE_LTF])
5238                         mask->control[band].he_ltf =
5239                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5240
5241                 if (mask->control[band].legacy == 0) {
5242                         /* don't allow empty legacy rates if HT, VHT or HE
5243                          * are not even supported.
5244                          */
5245                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5246                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5247                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5248                                 return -EINVAL;
5249
5250                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5251                                 if (mask->control[band].ht_mcs[i])
5252                                         goto out;
5253
5254                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5255                                 if (mask->control[band].vht_mcs[i])
5256                                         goto out;
5257
5258                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5259                                 if (mask->control[band].he_mcs[i])
5260                                         goto out;
5261
5262                         /* legacy and mcs rates may not be both empty */
5263                         return -EINVAL;
5264                 }
5265         }
5266
5267 out:
5268         return 0;
5269 }
5270
5271 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5272                                    enum nl80211_band band,
5273                                    struct cfg80211_bitrate_mask *beacon_rate)
5274 {
5275         u32 count_ht, count_vht, count_he, i;
5276         u32 rate = beacon_rate->control[band].legacy;
5277
5278         /* Allow only one rate */
5279         if (hweight32(rate) > 1)
5280                 return -EINVAL;
5281
5282         count_ht = 0;
5283         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5284                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5285                         return -EINVAL;
5286                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5287                         count_ht++;
5288                         if (count_ht > 1)
5289                                 return -EINVAL;
5290                 }
5291                 if (count_ht && rate)
5292                         return -EINVAL;
5293         }
5294
5295         count_vht = 0;
5296         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5297                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5298                         return -EINVAL;
5299                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5300                         count_vht++;
5301                         if (count_vht > 1)
5302                                 return -EINVAL;
5303                 }
5304                 if (count_vht && rate)
5305                         return -EINVAL;
5306         }
5307
5308         count_he = 0;
5309         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5310                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5311                         return -EINVAL;
5312                 } else if (beacon_rate->control[band].he_mcs[i]) {
5313                         count_he++;
5314                         if (count_he > 1)
5315                                 return -EINVAL;
5316                 }
5317                 if (count_he && rate)
5318                         return -EINVAL;
5319         }
5320
5321         if ((count_ht && count_vht && count_he) ||
5322             (!rate && !count_ht && !count_vht && !count_he))
5323                 return -EINVAL;
5324
5325         if (rate &&
5326             !wiphy_ext_feature_isset(&rdev->wiphy,
5327                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5328                 return -EINVAL;
5329         if (count_ht &&
5330             !wiphy_ext_feature_isset(&rdev->wiphy,
5331                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5332                 return -EINVAL;
5333         if (count_vht &&
5334             !wiphy_ext_feature_isset(&rdev->wiphy,
5335                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5336                 return -EINVAL;
5337         if (count_he &&
5338             !wiphy_ext_feature_isset(&rdev->wiphy,
5339                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5340                 return -EINVAL;
5341
5342         return 0;
5343 }
5344
5345 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5346                                        struct net_device *dev,
5347                                        struct nlattr *attrs,
5348                                        struct cfg80211_mbssid_config *config,
5349                                        u8 num_elems)
5350 {
5351         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5352
5353         if (!wiphy->mbssid_max_interfaces)
5354                 return -EOPNOTSUPP;
5355
5356         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5357                              NULL) ||
5358             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5359                 return -EINVAL;
5360
5361         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5362         if (config->ema) {
5363                 if (!wiphy->ema_max_profile_periodicity)
5364                         return -EOPNOTSUPP;
5365
5366                 if (num_elems > wiphy->ema_max_profile_periodicity)
5367                         return -EINVAL;
5368         }
5369
5370         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5371         if (config->index >= wiphy->mbssid_max_interfaces ||
5372             (!config->index && !num_elems))
5373                 return -EINVAL;
5374
5375         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5376                 u32 tx_ifindex =
5377                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5378
5379                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5380                     (config->index && tx_ifindex == dev->ifindex))
5381                         return -EINVAL;
5382
5383                 if (tx_ifindex != dev->ifindex) {
5384                         struct net_device *tx_netdev =
5385                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5386
5387                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5388                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5389                             tx_netdev->ieee80211_ptr->iftype !=
5390                                                         NL80211_IFTYPE_AP) {
5391                                 dev_put(tx_netdev);
5392                                 return -EINVAL;
5393                         }
5394
5395                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5396                 } else {
5397                         config->tx_wdev = dev->ieee80211_ptr;
5398                 }
5399         } else if (!config->index) {
5400                 config->tx_wdev = dev->ieee80211_ptr;
5401         } else {
5402                 return -EINVAL;
5403         }
5404
5405         return 0;
5406 }
5407
5408 static struct cfg80211_mbssid_elems *
5409 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5410 {
5411         struct nlattr *nl_elems;
5412         struct cfg80211_mbssid_elems *elems;
5413         int rem_elems;
5414         u8 i = 0, num_elems = 0;
5415
5416         if (!wiphy->mbssid_max_interfaces)
5417                 return ERR_PTR(-EINVAL);
5418
5419         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5420                 if (num_elems >= 255)
5421                         return ERR_PTR(-EINVAL);
5422                 num_elems++;
5423         }
5424
5425         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5426         if (!elems)
5427                 return ERR_PTR(-ENOMEM);
5428         elems->cnt = num_elems;
5429
5430         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5431                 elems->elem[i].data = nla_data(nl_elems);
5432                 elems->elem[i].len = nla_len(nl_elems);
5433                 i++;
5434         }
5435         return elems;
5436 }
5437
5438 static struct cfg80211_rnr_elems *
5439 nl80211_parse_rnr_elems(struct wiphy *wiphy, struct nlattr *attrs,
5440                         struct netlink_ext_ack *extack)
5441 {
5442         struct nlattr *nl_elems;
5443         struct cfg80211_rnr_elems *elems;
5444         int rem_elems;
5445         u8 i = 0, num_elems = 0;
5446
5447         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5448                 int ret;
5449
5450                 ret = validate_ie_attr(nl_elems, extack);
5451                 if (ret)
5452                         return ERR_PTR(ret);
5453
5454                 num_elems++;
5455         }
5456
5457         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5458         if (!elems)
5459                 return ERR_PTR(-ENOMEM);
5460         elems->cnt = num_elems;
5461
5462         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5463                 elems->elem[i].data = nla_data(nl_elems);
5464                 elems->elem[i].len = nla_len(nl_elems);
5465                 i++;
5466         }
5467         return elems;
5468 }
5469
5470 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5471                                       struct cfg80211_he_bss_color *he_bss_color)
5472 {
5473         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5474         int err;
5475
5476         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5477                                he_bss_color_policy, NULL);
5478         if (err)
5479                 return err;
5480
5481         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5482                 return -EINVAL;
5483
5484         he_bss_color->color =
5485                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5486         he_bss_color->enabled =
5487                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5488         he_bss_color->partial =
5489                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5490
5491         return 0;
5492 }
5493
5494 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5495                                 struct nlattr *attrs[],
5496                                 struct cfg80211_beacon_data *bcn,
5497                                 struct netlink_ext_ack *extack)
5498 {
5499         bool haveinfo = false;
5500         int err;
5501
5502         memset(bcn, 0, sizeof(*bcn));
5503
5504         bcn->link_id = nl80211_link_id(attrs);
5505
5506         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5507                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5508                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5509                 if (!bcn->head_len)
5510                         return -EINVAL;
5511                 haveinfo = true;
5512         }
5513
5514         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5515                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5516                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5517                 haveinfo = true;
5518         }
5519
5520         if (!haveinfo)
5521                 return -EINVAL;
5522
5523         if (attrs[NL80211_ATTR_IE]) {
5524                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5525                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5526         }
5527
5528         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5529                 bcn->proberesp_ies =
5530                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5531                 bcn->proberesp_ies_len =
5532                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5533         }
5534
5535         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5536                 bcn->assocresp_ies =
5537                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5538                 bcn->assocresp_ies_len =
5539                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5540         }
5541
5542         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5543                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5544                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5545         }
5546
5547         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5548                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5549
5550                 err = nla_parse_nested_deprecated(tb,
5551                                                   NL80211_FTM_RESP_ATTR_MAX,
5552                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5553                                                   NULL, NULL);
5554                 if (err)
5555                         return err;
5556
5557                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5558                     wiphy_ext_feature_isset(&rdev->wiphy,
5559                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5560                         bcn->ftm_responder = 1;
5561                 else
5562                         return -EOPNOTSUPP;
5563
5564                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5565                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5566                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5567                 }
5568
5569                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5570                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5571                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5572                 }
5573         } else {
5574                 bcn->ftm_responder = -1;
5575         }
5576
5577         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5578                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5579                                                  &bcn->he_bss_color);
5580                 if (err)
5581                         return err;
5582                 bcn->he_bss_color_valid = true;
5583         }
5584
5585         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5586                 struct cfg80211_mbssid_elems *mbssid =
5587                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5588                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5589
5590                 if (IS_ERR(mbssid))
5591                         return PTR_ERR(mbssid);
5592
5593                 bcn->mbssid_ies = mbssid;
5594
5595                 if (bcn->mbssid_ies && attrs[NL80211_ATTR_EMA_RNR_ELEMS]) {
5596                         struct cfg80211_rnr_elems *rnr =
5597                                 nl80211_parse_rnr_elems(&rdev->wiphy,
5598                                                         attrs[NL80211_ATTR_EMA_RNR_ELEMS],
5599                                                         extack);
5600
5601                         if (IS_ERR(rnr))
5602                                 return PTR_ERR(rnr);
5603
5604                         if (rnr && rnr->cnt < bcn->mbssid_ies->cnt)
5605                                 return -EINVAL;
5606
5607                         bcn->rnr_ies = rnr;
5608                 }
5609         }
5610
5611         return 0;
5612 }
5613
5614 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5615                                     struct ieee80211_he_obss_pd *he_obss_pd)
5616 {
5617         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5618         int err;
5619
5620         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5621                                he_obss_pd_policy, NULL);
5622         if (err)
5623                 return err;
5624
5625         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5626                 return -EINVAL;
5627
5628         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5629
5630         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5631                 he_obss_pd->min_offset =
5632                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5633         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5634                 he_obss_pd->max_offset =
5635                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5636         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5637                 he_obss_pd->non_srg_max_offset =
5638                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5639
5640         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5641                 return -EINVAL;
5642
5643         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5644                 memcpy(he_obss_pd->bss_color_bitmap,
5645                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5646                        sizeof(he_obss_pd->bss_color_bitmap));
5647
5648         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5649                 memcpy(he_obss_pd->partial_bssid_bitmap,
5650                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5651                        sizeof(he_obss_pd->partial_bssid_bitmap));
5652
5653         he_obss_pd->enable = true;
5654
5655         return 0;
5656 }
5657
5658 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5659                                         struct nlattr *attrs,
5660                                         struct cfg80211_fils_discovery *fd)
5661 {
5662         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5663         int ret;
5664
5665         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5666                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5667                 return -EINVAL;
5668
5669         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5670                                NULL, NULL);
5671         if (ret)
5672                 return ret;
5673
5674         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] &&
5675             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] &&
5676             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]) {
5677                 fd->update = true;
5678                 return 0;
5679         }
5680
5681         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5682             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5683             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5684                 return -EINVAL;
5685
5686         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5687         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5688         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5689         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5690         fd->update = true;
5691         return 0;
5692 }
5693
5694 static int
5695 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5696                                      struct nlattr *attrs,
5697                                      struct cfg80211_unsol_bcast_probe_resp *presp)
5698 {
5699         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5700         int ret;
5701
5702         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5703                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5704                 return -EINVAL;
5705
5706         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5707                                attrs, NULL, NULL);
5708         if (ret)
5709                 return ret;
5710
5711         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] &&
5712             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]) {
5713                 presp->update = true;
5714                 return 0;
5715         }
5716
5717         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5718             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5719                 return -EINVAL;
5720
5721         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5722         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5723         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5724         presp->update = true;
5725         return 0;
5726 }
5727
5728 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5729                                             const struct element *rates)
5730 {
5731         int i;
5732
5733         if (!rates)
5734                 return;
5735
5736         for (i = 0; i < rates->datalen; i++) {
5737                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5738                         params->ht_required = true;
5739                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5740                         params->vht_required = true;
5741                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5742                         params->he_required = true;
5743                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5744                         params->sae_h2e_required = true;
5745         }
5746 }
5747
5748 /*
5749  * Since the nl80211 API didn't include, from the beginning, attributes about
5750  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5751  * benefit of drivers that rebuild IEs in the firmware.
5752  */
5753 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5754 {
5755         const struct cfg80211_beacon_data *bcn = &params->beacon;
5756         size_t ies_len = bcn->tail_len;
5757         const u8 *ies = bcn->tail;
5758         const struct element *rates;
5759         const struct element *cap;
5760
5761         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5762         nl80211_check_ap_rate_selectors(params, rates);
5763
5764         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5765         nl80211_check_ap_rate_selectors(params, rates);
5766
5767         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5768         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5769                 params->ht_cap = (void *)cap->data;
5770         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5771         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5772                 params->vht_cap = (void *)cap->data;
5773         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5774         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5775                 params->he_cap = (void *)(cap->data + 1);
5776         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5777         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5778                 params->he_oper = (void *)(cap->data + 1);
5779         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5780         if (cap) {
5781                 if (!cap->datalen)
5782                         return -EINVAL;
5783                 params->eht_cap = (void *)(cap->data + 1);
5784                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5785                                                 (const u8 *)params->eht_cap,
5786                                                 cap->datalen - 1, true))
5787                         return -EINVAL;
5788         }
5789         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5790         if (cap) {
5791                 if (!cap->datalen)
5792                         return -EINVAL;
5793                 params->eht_oper = (void *)(cap->data + 1);
5794                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5795                                                 cap->datalen - 1))
5796                         return -EINVAL;
5797         }
5798         return 0;
5799 }
5800
5801 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5802                                    struct cfg80211_ap_settings *params)
5803 {
5804         struct wireless_dev *wdev;
5805
5806         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5807                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5808                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5809                         continue;
5810
5811                 if (!wdev->u.ap.preset_chandef.chan)
5812                         continue;
5813
5814                 params->chandef = wdev->u.ap.preset_chandef;
5815                 return true;
5816         }
5817
5818         return false;
5819 }
5820
5821 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5822                                     enum nl80211_auth_type auth_type,
5823                                     enum nl80211_commands cmd)
5824 {
5825         if (auth_type > NL80211_AUTHTYPE_MAX)
5826                 return false;
5827
5828         switch (cmd) {
5829         case NL80211_CMD_AUTHENTICATE:
5830                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5831                     auth_type == NL80211_AUTHTYPE_SAE)
5832                         return false;
5833                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5834                                              NL80211_EXT_FEATURE_FILS_STA) &&
5835                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5836                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5837                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5838                         return false;
5839                 return true;
5840         case NL80211_CMD_CONNECT:
5841                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5842                     !wiphy_ext_feature_isset(&rdev->wiphy,
5843                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5844                     auth_type == NL80211_AUTHTYPE_SAE)
5845                         return false;
5846
5847                 /* FILS with SK PFS or PK not supported yet */
5848                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5849                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5850                         return false;
5851                 if (!wiphy_ext_feature_isset(
5852                             &rdev->wiphy,
5853                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5854                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5855                         return false;
5856                 return true;
5857         case NL80211_CMD_START_AP:
5858                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5859                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5860                     auth_type == NL80211_AUTHTYPE_SAE)
5861                         return false;
5862                 /* FILS not supported yet */
5863                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5864                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5865                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5866                         return false;
5867                 return true;
5868         default:
5869                 return false;
5870         }
5871 }
5872
5873 static void nl80211_send_ap_started(struct wireless_dev *wdev,
5874                                     unsigned int link_id)
5875 {
5876         struct wiphy *wiphy = wdev->wiphy;
5877         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
5878         struct sk_buff *msg;
5879         void *hdr;
5880
5881         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5882         if (!msg)
5883                 return;
5884
5885         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_START_AP);
5886         if (!hdr)
5887                 goto out;
5888
5889         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
5890             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
5891             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
5892                               NL80211_ATTR_PAD) ||
5893             (wdev->u.ap.ssid_len &&
5894              nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
5895                      wdev->u.ap.ssid)) ||
5896             (wdev->valid_links &&
5897              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
5898                 goto out;
5899
5900         genlmsg_end(msg, hdr);
5901
5902         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
5903                                 NL80211_MCGRP_MLME, GFP_KERNEL);
5904         return;
5905 out:
5906         nlmsg_free(msg);
5907 }
5908
5909 static int nl80211_validate_ap_phy_operation(struct cfg80211_ap_settings *params)
5910 {
5911         struct ieee80211_channel *channel = params->chandef.chan;
5912
5913         if ((params->he_cap ||  params->he_oper) &&
5914             (channel->flags & IEEE80211_CHAN_NO_HE))
5915                 return -EOPNOTSUPP;
5916
5917         if ((params->eht_cap || params->eht_oper) &&
5918             (channel->flags & IEEE80211_CHAN_NO_EHT))
5919                 return -EOPNOTSUPP;
5920
5921         return 0;
5922 }
5923
5924 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5925 {
5926         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5927         unsigned int link_id = nl80211_link_id(info->attrs);
5928         struct net_device *dev = info->user_ptr[1];
5929         struct wireless_dev *wdev = dev->ieee80211_ptr;
5930         struct cfg80211_ap_settings *params;
5931         int err;
5932
5933         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5934             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5935                 return -EOPNOTSUPP;
5936
5937         if (!rdev->ops->start_ap)
5938                 return -EOPNOTSUPP;
5939
5940         if (wdev->links[link_id].ap.beacon_interval)
5941                 return -EALREADY;
5942
5943         /* these are required for START_AP */
5944         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5945             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5946             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5947                 return -EINVAL;
5948
5949         params = kzalloc(sizeof(*params), GFP_KERNEL);
5950         if (!params)
5951                 return -ENOMEM;
5952
5953         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon,
5954                                    info->extack);
5955         if (err)
5956                 goto out;
5957
5958         params->beacon_interval =
5959                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5960         params->dtim_period =
5961                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5962
5963         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5964                                            params->beacon_interval);
5965         if (err)
5966                 goto out;
5967
5968         /*
5969          * In theory, some of these attributes should be required here
5970          * but since they were not used when the command was originally
5971          * added, keep them optional for old user space programs to let
5972          * them continue to work with drivers that do not need the
5973          * additional information -- drivers must check!
5974          */
5975         if (info->attrs[NL80211_ATTR_SSID]) {
5976                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5977                 params->ssid_len =
5978                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5979                 if (params->ssid_len == 0) {
5980                         err = -EINVAL;
5981                         goto out;
5982                 }
5983
5984                 if (wdev->u.ap.ssid_len &&
5985                     (wdev->u.ap.ssid_len != params->ssid_len ||
5986                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5987                         /* require identical SSID for MLO */
5988                         err = -EINVAL;
5989                         goto out;
5990                 }
5991         } else if (wdev->valid_links) {
5992                 /* require SSID for MLO */
5993                 err = -EINVAL;
5994                 goto out;
5995         }
5996
5997         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5998                 params->hidden_ssid = nla_get_u32(
5999                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
6000
6001         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6002
6003         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6004                 params->auth_type = nla_get_u32(
6005                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
6006                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
6007                                              NL80211_CMD_START_AP)) {
6008                         err = -EINVAL;
6009                         goto out;
6010                 }
6011         } else
6012                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6013
6014         err = nl80211_crypto_settings(rdev, info, &params->crypto,
6015                                       NL80211_MAX_NR_CIPHER_SUITES);
6016         if (err)
6017                 goto out;
6018
6019         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
6020                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
6021                         err = -EOPNOTSUPP;
6022                         goto out;
6023                 }
6024                 params->inactivity_timeout = nla_get_u16(
6025                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
6026         }
6027
6028         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6029                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6030                         err = -EINVAL;
6031                         goto out;
6032                 }
6033                 params->p2p_ctwindow =
6034                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6035                 if (params->p2p_ctwindow != 0 &&
6036                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
6037                         err = -EINVAL;
6038                         goto out;
6039                 }
6040         }
6041
6042         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6043                 u8 tmp;
6044
6045                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6046                         err = -EINVAL;
6047                         goto out;
6048                 }
6049                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6050                 params->p2p_opp_ps = tmp;
6051                 if (params->p2p_opp_ps != 0 &&
6052                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
6053                         err = -EINVAL;
6054                         goto out;
6055                 }
6056         }
6057
6058         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6059                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
6060                 if (err)
6061                         goto out;
6062         } else if (wdev->valid_links) {
6063                 /* with MLD need to specify the channel configuration */
6064                 err = -EINVAL;
6065                 goto out;
6066         } else if (wdev->u.ap.preset_chandef.chan) {
6067                 params->chandef = wdev->u.ap.preset_chandef;
6068         } else if (!nl80211_get_ap_channel(rdev, params)) {
6069                 err = -EINVAL;
6070                 goto out;
6071         }
6072
6073         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
6074                                            wdev->iftype)) {
6075                 err = -EINVAL;
6076                 goto out;
6077         }
6078
6079         if (info->attrs[NL80211_ATTR_TX_RATES]) {
6080                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
6081                                                     NL80211_ATTR_TX_RATES,
6082                                                     &params->beacon_rate,
6083                                                     dev, false, link_id);
6084                 if (err)
6085                         goto out;
6086
6087                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
6088                                               &params->beacon_rate);
6089                 if (err)
6090                         goto out;
6091         }
6092
6093         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
6094                 params->smps_mode =
6095                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
6096                 switch (params->smps_mode) {
6097                 case NL80211_SMPS_OFF:
6098                         break;
6099                 case NL80211_SMPS_STATIC:
6100                         if (!(rdev->wiphy.features &
6101                               NL80211_FEATURE_STATIC_SMPS)) {
6102                                 err = -EINVAL;
6103                                 goto out;
6104                         }
6105                         break;
6106                 case NL80211_SMPS_DYNAMIC:
6107                         if (!(rdev->wiphy.features &
6108                               NL80211_FEATURE_DYNAMIC_SMPS)) {
6109                                 err = -EINVAL;
6110                                 goto out;
6111                         }
6112                         break;
6113                 default:
6114                         err = -EINVAL;
6115                         goto out;
6116                 }
6117         } else {
6118                 params->smps_mode = NL80211_SMPS_OFF;
6119         }
6120
6121         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
6122         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
6123                 err = -EOPNOTSUPP;
6124                 goto out;
6125         }
6126
6127         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
6128                 params->acl = parse_acl_data(&rdev->wiphy, info);
6129                 if (IS_ERR(params->acl)) {
6130                         err = PTR_ERR(params->acl);
6131                         params->acl = NULL;
6132                         goto out;
6133                 }
6134         }
6135
6136         params->twt_responder =
6137                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
6138
6139         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
6140                 err = nl80211_parse_he_obss_pd(
6141                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
6142                                         &params->he_obss_pd);
6143                 if (err)
6144                         goto out;
6145         }
6146
6147         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
6148                 err = nl80211_parse_fils_discovery(rdev,
6149                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
6150                                                    &params->fils_discovery);
6151                 if (err)
6152                         goto out;
6153         }
6154
6155         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6156                 err = nl80211_parse_unsol_bcast_probe_resp(
6157                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6158                         &params->unsol_bcast_probe_resp);
6159                 if (err)
6160                         goto out;
6161         }
6162
6163         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6164                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6165                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6166                                                   &params->mbssid_config,
6167                                                   params->beacon.mbssid_ies ?
6168                                                         params->beacon.mbssid_ies->cnt :
6169                                                         0);
6170                 if (err)
6171                         goto out;
6172         }
6173
6174         if (!params->mbssid_config.ema && params->beacon.rnr_ies) {
6175                 err = -EINVAL;
6176                 goto out;
6177         }
6178
6179         err = nl80211_calculate_ap_params(params);
6180         if (err)
6181                 goto out;
6182
6183         err = nl80211_validate_ap_phy_operation(params);
6184         if (err)
6185                 goto out;
6186
6187         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6188                 params->flags = nla_get_u32(
6189                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6190         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6191                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6192
6193         if (wdev->conn_owner_nlportid &&
6194             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6195             wdev->conn_owner_nlportid != info->snd_portid) {
6196                 err = -EINVAL;
6197                 goto out;
6198         }
6199
6200         /* FIXME: validate MLO/link-id against driver capabilities */
6201
6202         err = rdev_start_ap(rdev, dev, params);
6203         if (!err) {
6204                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6205                 wdev->links[link_id].ap.chandef = params->chandef;
6206                 wdev->u.ap.ssid_len = params->ssid_len;
6207                 memcpy(wdev->u.ap.ssid, params->ssid,
6208                        params->ssid_len);
6209
6210                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6211                         wdev->conn_owner_nlportid = info->snd_portid;
6212
6213                 nl80211_send_ap_started(wdev, link_id);
6214         }
6215 out:
6216         kfree(params->acl);
6217         kfree(params->beacon.mbssid_ies);
6218         if (params->mbssid_config.tx_wdev &&
6219             params->mbssid_config.tx_wdev->netdev &&
6220             params->mbssid_config.tx_wdev->netdev != dev)
6221                 dev_put(params->mbssid_config.tx_wdev->netdev);
6222         kfree(params->beacon.rnr_ies);
6223         kfree(params);
6224
6225         return err;
6226 }
6227
6228 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6229 {
6230         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6231         unsigned int link_id = nl80211_link_id(info->attrs);
6232         struct net_device *dev = info->user_ptr[1];
6233         struct wireless_dev *wdev = dev->ieee80211_ptr;
6234         struct cfg80211_ap_update *params;
6235         struct nlattr *attr;
6236         int err;
6237
6238         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6239             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6240                 return -EOPNOTSUPP;
6241
6242         if (!rdev->ops->change_beacon)
6243                 return -EOPNOTSUPP;
6244
6245         if (!wdev->links[link_id].ap.beacon_interval)
6246                 return -EINVAL;
6247
6248         params = kzalloc(sizeof(*params), GFP_KERNEL);
6249         if (!params)
6250                 return -ENOMEM;
6251
6252         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon,
6253                                    info->extack);
6254         if (err)
6255                 goto out;
6256
6257         attr = info->attrs[NL80211_ATTR_FILS_DISCOVERY];
6258         if (attr) {
6259                 err = nl80211_parse_fils_discovery(rdev, attr,
6260                                                    &params->fils_discovery);
6261                 if (err)
6262                         goto out;
6263         }
6264
6265         attr = info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP];
6266         if (attr) {
6267                 err = nl80211_parse_unsol_bcast_probe_resp(rdev, attr,
6268                                                            &params->unsol_bcast_probe_resp);
6269                 if (err)
6270                         goto out;
6271         }
6272
6273         err = rdev_change_beacon(rdev, dev, params);
6274
6275 out:
6276         kfree(params->beacon.mbssid_ies);
6277         kfree(params->beacon.rnr_ies);
6278         kfree(params);
6279         return err;
6280 }
6281
6282 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6283 {
6284         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6285         unsigned int link_id = nl80211_link_id(info->attrs);
6286         struct net_device *dev = info->user_ptr[1];
6287
6288         return cfg80211_stop_ap(rdev, dev, link_id, false);
6289 }
6290
6291 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6292         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6293         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6294         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6295         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6296         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6297         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6298 };
6299
6300 static int parse_station_flags(struct genl_info *info,
6301                                enum nl80211_iftype iftype,
6302                                struct station_parameters *params)
6303 {
6304         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6305         struct nlattr *nla;
6306         int flag;
6307
6308         /*
6309          * Try parsing the new attribute first so userspace
6310          * can specify both for older kernels.
6311          */
6312         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6313         if (nla) {
6314                 struct nl80211_sta_flag_update *sta_flags;
6315
6316                 sta_flags = nla_data(nla);
6317                 params->sta_flags_mask = sta_flags->mask;
6318                 params->sta_flags_set = sta_flags->set;
6319                 params->sta_flags_set &= params->sta_flags_mask;
6320                 if ((params->sta_flags_mask |
6321                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6322                         return -EINVAL;
6323                 return 0;
6324         }
6325
6326         /* if present, parse the old attribute */
6327
6328         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6329         if (!nla)
6330                 return 0;
6331
6332         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6333                 return -EINVAL;
6334
6335         /*
6336          * Only allow certain flags for interface types so that
6337          * other attributes are silently ignored. Remember that
6338          * this is backward compatibility code with old userspace
6339          * and shouldn't be hit in other cases anyway.
6340          */
6341         switch (iftype) {
6342         case NL80211_IFTYPE_AP:
6343         case NL80211_IFTYPE_AP_VLAN:
6344         case NL80211_IFTYPE_P2P_GO:
6345                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6346                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6347                                          BIT(NL80211_STA_FLAG_WME) |
6348                                          BIT(NL80211_STA_FLAG_MFP);
6349                 break;
6350         case NL80211_IFTYPE_P2P_CLIENT:
6351         case NL80211_IFTYPE_STATION:
6352                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6353                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6354                 break;
6355         case NL80211_IFTYPE_MESH_POINT:
6356                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6357                                          BIT(NL80211_STA_FLAG_MFP) |
6358                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6359                 break;
6360         default:
6361                 return -EINVAL;
6362         }
6363
6364         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6365                 if (flags[flag]) {
6366                         params->sta_flags_set |= (1<<flag);
6367
6368                         /* no longer support new API additions in old API */
6369                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6370                                 return -EINVAL;
6371                 }
6372         }
6373
6374         return 0;
6375 }
6376
6377 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6378 {
6379         struct nlattr *rate;
6380         u32 bitrate;
6381         u16 bitrate_compat;
6382         enum nl80211_rate_info rate_flg;
6383
6384         rate = nla_nest_start_noflag(msg, attr);
6385         if (!rate)
6386                 return false;
6387
6388         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6389         bitrate = cfg80211_calculate_bitrate(info);
6390         /* report 16-bit bitrate only if we can */
6391         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6392         if (bitrate > 0 &&
6393             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6394                 return false;
6395         if (bitrate_compat > 0 &&
6396             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6397                 return false;
6398
6399         switch (info->bw) {
6400         case RATE_INFO_BW_1:
6401                 rate_flg = NL80211_RATE_INFO_1_MHZ_WIDTH;
6402                 break;
6403         case RATE_INFO_BW_2:
6404                 rate_flg = NL80211_RATE_INFO_2_MHZ_WIDTH;
6405                 break;
6406         case RATE_INFO_BW_4:
6407                 rate_flg = NL80211_RATE_INFO_4_MHZ_WIDTH;
6408                 break;
6409         case RATE_INFO_BW_5:
6410                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6411                 break;
6412         case RATE_INFO_BW_8:
6413                 rate_flg = NL80211_RATE_INFO_8_MHZ_WIDTH;
6414                 break;
6415         case RATE_INFO_BW_10:
6416                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6417                 break;
6418         case RATE_INFO_BW_16:
6419                 rate_flg = NL80211_RATE_INFO_16_MHZ_WIDTH;
6420                 break;
6421         default:
6422                 WARN_ON(1);
6423                 fallthrough;
6424         case RATE_INFO_BW_20:
6425                 rate_flg = 0;
6426                 break;
6427         case RATE_INFO_BW_40:
6428                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6429                 break;
6430         case RATE_INFO_BW_80:
6431                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6432                 break;
6433         case RATE_INFO_BW_160:
6434                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6435                 break;
6436         case RATE_INFO_BW_HE_RU:
6437                 rate_flg = 0;
6438                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6439                 break;
6440         case RATE_INFO_BW_320:
6441                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6442                 break;
6443         case RATE_INFO_BW_EHT_RU:
6444                 rate_flg = 0;
6445                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6446                 break;
6447         }
6448
6449         if (rate_flg && nla_put_flag(msg, rate_flg))
6450                 return false;
6451
6452         if (info->flags & RATE_INFO_FLAGS_MCS) {
6453                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6454                         return false;
6455                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6456                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6457                         return false;
6458         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6459                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6460                         return false;
6461                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6462                         return false;
6463                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6464                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6465                         return false;
6466         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6467                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6468                         return false;
6469                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6470                         return false;
6471                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6472                         return false;
6473                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6474                         return false;
6475                 if (info->bw == RATE_INFO_BW_HE_RU &&
6476                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6477                                info->he_ru_alloc))
6478                         return false;
6479         } else if (info->flags & RATE_INFO_FLAGS_S1G_MCS) {
6480                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_MCS, info->mcs))
6481                         return false;
6482                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_NSS, info->nss))
6483                         return false;
6484                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6485                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6486                         return false;
6487         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6488                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6489                         return false;
6490                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6491                         return false;
6492                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6493                         return false;
6494                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6495                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6496                                info->eht_ru_alloc))
6497                         return false;
6498         }
6499
6500         nla_nest_end(msg, rate);
6501         return true;
6502 }
6503
6504 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6505                                int id)
6506 {
6507         void *attr;
6508         int i = 0;
6509
6510         if (!mask)
6511                 return true;
6512
6513         attr = nla_nest_start_noflag(msg, id);
6514         if (!attr)
6515                 return false;
6516
6517         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6518                 if (!(mask & BIT(i)))
6519                         continue;
6520
6521                 if (nla_put_u8(msg, i, signal[i]))
6522                         return false;
6523         }
6524
6525         nla_nest_end(msg, attr);
6526
6527         return true;
6528 }
6529
6530 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6531                                 u32 seq, int flags,
6532                                 struct cfg80211_registered_device *rdev,
6533                                 struct net_device *dev,
6534                                 const u8 *mac_addr, struct station_info *sinfo)
6535 {
6536         void *hdr;
6537         struct nlattr *sinfoattr, *bss_param;
6538
6539         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6540         if (!hdr) {
6541                 cfg80211_sinfo_release_content(sinfo);
6542                 return -1;
6543         }
6544
6545         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6546             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6547             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6548                 goto nla_put_failure;
6549
6550         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6551         if (!sinfoattr)
6552                 goto nla_put_failure;
6553
6554 #define PUT_SINFO(attr, memb, type) do {                                \
6555         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6556         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6557             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6558                              sinfo->memb))                              \
6559                 goto nla_put_failure;                                   \
6560         } while (0)
6561 #define PUT_SINFO_U64(attr, memb) do {                                  \
6562         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6563             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6564                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6565                 goto nla_put_failure;                                   \
6566         } while (0)
6567
6568         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6569         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6570         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6571
6572         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6573                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6574             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6575                         (u32)sinfo->rx_bytes))
6576                 goto nla_put_failure;
6577
6578         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6579                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6580             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6581                         (u32)sinfo->tx_bytes))
6582                 goto nla_put_failure;
6583
6584         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6585         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6586         PUT_SINFO(LLID, llid, u16);
6587         PUT_SINFO(PLID, plid, u16);
6588         PUT_SINFO(PLINK_STATE, plink_state, u8);
6589         PUT_SINFO_U64(RX_DURATION, rx_duration);
6590         PUT_SINFO_U64(TX_DURATION, tx_duration);
6591
6592         if (wiphy_ext_feature_isset(&rdev->wiphy,
6593                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6594                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6595
6596         switch (rdev->wiphy.signal_type) {
6597         case CFG80211_SIGNAL_TYPE_MBM:
6598                 PUT_SINFO(SIGNAL, signal, u8);
6599                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6600                 break;
6601         default:
6602                 break;
6603         }
6604         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6605                 if (!nl80211_put_signal(msg, sinfo->chains,
6606                                         sinfo->chain_signal,
6607                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6608                         goto nla_put_failure;
6609         }
6610         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6611                 if (!nl80211_put_signal(msg, sinfo->chains,
6612                                         sinfo->chain_signal_avg,
6613                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6614                         goto nla_put_failure;
6615         }
6616         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6617                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6618                                           NL80211_STA_INFO_TX_BITRATE))
6619                         goto nla_put_failure;
6620         }
6621         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6622                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6623                                           NL80211_STA_INFO_RX_BITRATE))
6624                         goto nla_put_failure;
6625         }
6626
6627         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6628         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6629         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6630         PUT_SINFO(TX_FAILED, tx_failed, u32);
6631         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6632         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6633         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6634         PUT_SINFO(LOCAL_PM, local_pm, u32);
6635         PUT_SINFO(PEER_PM, peer_pm, u32);
6636         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6637         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6638         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6639
6640         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6641                 bss_param = nla_nest_start_noflag(msg,
6642                                                   NL80211_STA_INFO_BSS_PARAM);
6643                 if (!bss_param)
6644                         goto nla_put_failure;
6645
6646                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6647                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6648                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6649                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6650                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6651                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6652                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6653                                sinfo->bss_param.dtim_period) ||
6654                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6655                                 sinfo->bss_param.beacon_interval))
6656                         goto nla_put_failure;
6657
6658                 nla_nest_end(msg, bss_param);
6659         }
6660         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6661             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6662                     sizeof(struct nl80211_sta_flag_update),
6663                     &sinfo->sta_flags))
6664                 goto nla_put_failure;
6665
6666         PUT_SINFO_U64(T_OFFSET, t_offset);
6667         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6668         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6669         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6670         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6671         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6672         if (wiphy_ext_feature_isset(&rdev->wiphy,
6673                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6674                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6675                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6676         }
6677
6678 #undef PUT_SINFO
6679 #undef PUT_SINFO_U64
6680
6681         if (sinfo->pertid) {
6682                 struct nlattr *tidsattr;
6683                 int tid;
6684
6685                 tidsattr = nla_nest_start_noflag(msg,
6686                                                  NL80211_STA_INFO_TID_STATS);
6687                 if (!tidsattr)
6688                         goto nla_put_failure;
6689
6690                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6691                         struct cfg80211_tid_stats *tidstats;
6692                         struct nlattr *tidattr;
6693
6694                         tidstats = &sinfo->pertid[tid];
6695
6696                         if (!tidstats->filled)
6697                                 continue;
6698
6699                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6700                         if (!tidattr)
6701                                 goto nla_put_failure;
6702
6703 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6704         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6705             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6706                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6707                 goto nla_put_failure;                                   \
6708         } while (0)
6709
6710                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6711                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6712                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6713                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6714
6715 #undef PUT_TIDVAL_U64
6716                         if ((tidstats->filled &
6717                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6718                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6719                                                    NL80211_TID_STATS_TXQ_STATS))
6720                                 goto nla_put_failure;
6721
6722                         nla_nest_end(msg, tidattr);
6723                 }
6724
6725                 nla_nest_end(msg, tidsattr);
6726         }
6727
6728         nla_nest_end(msg, sinfoattr);
6729
6730         if (sinfo->assoc_req_ies_len &&
6731             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6732                     sinfo->assoc_req_ies))
6733                 goto nla_put_failure;
6734
6735         if (sinfo->assoc_resp_ies_len &&
6736             nla_put(msg, NL80211_ATTR_RESP_IE, sinfo->assoc_resp_ies_len,
6737                     sinfo->assoc_resp_ies))
6738                 goto nla_put_failure;
6739
6740         if (sinfo->mlo_params_valid) {
6741                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
6742                                sinfo->assoc_link_id))
6743                         goto nla_put_failure;
6744
6745                 if (!is_zero_ether_addr(sinfo->mld_addr) &&
6746                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
6747                             sinfo->mld_addr))
6748                         goto nla_put_failure;
6749         }
6750
6751         cfg80211_sinfo_release_content(sinfo);
6752         genlmsg_end(msg, hdr);
6753         return 0;
6754
6755  nla_put_failure:
6756         cfg80211_sinfo_release_content(sinfo);
6757         genlmsg_cancel(msg, hdr);
6758         return -EMSGSIZE;
6759 }
6760
6761 static int nl80211_dump_station(struct sk_buff *skb,
6762                                 struct netlink_callback *cb)
6763 {
6764         struct station_info sinfo;
6765         struct cfg80211_registered_device *rdev;
6766         struct wireless_dev *wdev;
6767         u8 mac_addr[ETH_ALEN];
6768         int sta_idx = cb->args[2];
6769         int err;
6770
6771         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6772         if (err)
6773                 return err;
6774         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6775         __acquire(&rdev->wiphy.mtx);
6776
6777         if (!wdev->netdev) {
6778                 err = -EINVAL;
6779                 goto out_err;
6780         }
6781
6782         if (!rdev->ops->dump_station) {
6783                 err = -EOPNOTSUPP;
6784                 goto out_err;
6785         }
6786
6787         while (1) {
6788                 memset(&sinfo, 0, sizeof(sinfo));
6789                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6790                                         mac_addr, &sinfo);
6791                 if (err == -ENOENT)
6792                         break;
6793                 if (err)
6794                         goto out_err;
6795
6796                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6797                                 NETLINK_CB(cb->skb).portid,
6798                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6799                                 rdev, wdev->netdev, mac_addr,
6800                                 &sinfo) < 0)
6801                         goto out;
6802
6803                 sta_idx++;
6804         }
6805
6806  out:
6807         cb->args[2] = sta_idx;
6808         err = skb->len;
6809  out_err:
6810         wiphy_unlock(&rdev->wiphy);
6811
6812         return err;
6813 }
6814
6815 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6816 {
6817         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6818         struct net_device *dev = info->user_ptr[1];
6819         struct station_info sinfo;
6820         struct sk_buff *msg;
6821         u8 *mac_addr = NULL;
6822         int err;
6823
6824         memset(&sinfo, 0, sizeof(sinfo));
6825
6826         if (!info->attrs[NL80211_ATTR_MAC])
6827                 return -EINVAL;
6828
6829         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6830
6831         if (!rdev->ops->get_station)
6832                 return -EOPNOTSUPP;
6833
6834         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6835         if (err)
6836                 return err;
6837
6838         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6839         if (!msg) {
6840                 cfg80211_sinfo_release_content(&sinfo);
6841                 return -ENOMEM;
6842         }
6843
6844         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6845                                  info->snd_portid, info->snd_seq, 0,
6846                                  rdev, dev, mac_addr, &sinfo) < 0) {
6847                 nlmsg_free(msg);
6848                 return -ENOBUFS;
6849         }
6850
6851         return genlmsg_reply(msg, info);
6852 }
6853
6854 int cfg80211_check_station_change(struct wiphy *wiphy,
6855                                   struct station_parameters *params,
6856                                   enum cfg80211_station_type statype)
6857 {
6858         if (params->listen_interval != -1 &&
6859             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6860                 return -EINVAL;
6861
6862         if (params->support_p2p_ps != -1 &&
6863             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6864                 return -EINVAL;
6865
6866         if (params->aid &&
6867             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6868             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6869                 return -EINVAL;
6870
6871         /* When you run into this, adjust the code below for the new flag */
6872         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 8);
6873
6874         switch (statype) {
6875         case CFG80211_STA_MESH_PEER_KERNEL:
6876         case CFG80211_STA_MESH_PEER_USER:
6877                 /*
6878                  * No ignoring the TDLS flag here -- the userspace mesh
6879                  * code doesn't have the bug of including TDLS in the
6880                  * mask everywhere.
6881                  */
6882                 if (params->sta_flags_mask &
6883                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6884                                   BIT(NL80211_STA_FLAG_MFP) |
6885                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6886                         return -EINVAL;
6887                 break;
6888         case CFG80211_STA_TDLS_PEER_SETUP:
6889         case CFG80211_STA_TDLS_PEER_ACTIVE:
6890                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6891                         return -EINVAL;
6892                 /* ignore since it can't change */
6893                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6894                 break;
6895         default:
6896                 /* disallow mesh-specific things */
6897                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6898                         return -EINVAL;
6899                 if (params->local_pm)
6900                         return -EINVAL;
6901                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6902                         return -EINVAL;
6903         }
6904
6905         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6906             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6907                 /* TDLS can't be set, ... */
6908                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6909                         return -EINVAL;
6910                 /*
6911                  * ... but don't bother the driver with it. This works around
6912                  * a hostapd/wpa_supplicant issue -- it always includes the
6913                  * TLDS_PEER flag in the mask even for AP mode.
6914                  */
6915                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6916         }
6917
6918         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6919             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6920                 /* reject other things that can't change */
6921                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6922                         return -EINVAL;
6923                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6924                         return -EINVAL;
6925                 if (params->link_sta_params.supported_rates)
6926                         return -EINVAL;
6927                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6928                     params->link_sta_params.vht_capa ||
6929                     params->link_sta_params.he_capa ||
6930                     params->link_sta_params.eht_capa)
6931                         return -EINVAL;
6932                 if (params->sta_flags_mask & BIT(NL80211_STA_FLAG_SPP_AMSDU))
6933                         return -EINVAL;
6934         }
6935
6936         if (statype != CFG80211_STA_AP_CLIENT &&
6937             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6938                 if (params->vlan)
6939                         return -EINVAL;
6940         }
6941
6942         switch (statype) {
6943         case CFG80211_STA_AP_MLME_CLIENT:
6944                 /* Use this only for authorizing/unauthorizing a station */
6945                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6946                         return -EOPNOTSUPP;
6947                 break;
6948         case CFG80211_STA_AP_CLIENT:
6949         case CFG80211_STA_AP_CLIENT_UNASSOC:
6950                 /* accept only the listed bits */
6951                 if (params->sta_flags_mask &
6952                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6953                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6954                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6955                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6956                                   BIT(NL80211_STA_FLAG_WME) |
6957                                   BIT(NL80211_STA_FLAG_MFP) |
6958                                   BIT(NL80211_STA_FLAG_SPP_AMSDU)))
6959                         return -EINVAL;
6960
6961                 /* but authenticated/associated only if driver handles it */
6962                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6963                     params->sta_flags_mask &
6964                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6965                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6966                         return -EINVAL;
6967                 break;
6968         case CFG80211_STA_IBSS:
6969         case CFG80211_STA_AP_STA:
6970                 /* reject any changes other than AUTHORIZED */
6971                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6972                         return -EINVAL;
6973                 break;
6974         case CFG80211_STA_TDLS_PEER_SETUP:
6975                 /* reject any changes other than AUTHORIZED or WME */
6976                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6977                                                BIT(NL80211_STA_FLAG_WME)))
6978                         return -EINVAL;
6979                 /* force (at least) rates when authorizing */
6980                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6981                     !params->link_sta_params.supported_rates)
6982                         return -EINVAL;
6983                 break;
6984         case CFG80211_STA_TDLS_PEER_ACTIVE:
6985                 /* reject any changes */
6986                 return -EINVAL;
6987         case CFG80211_STA_MESH_PEER_KERNEL:
6988                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6989                         return -EINVAL;
6990                 break;
6991         case CFG80211_STA_MESH_PEER_USER:
6992                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6993                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6994                         return -EINVAL;
6995                 break;
6996         }
6997
6998         /*
6999          * Older kernel versions ignored this attribute entirely, so don't
7000          * reject attempts to update it but mark it as unused instead so the
7001          * driver won't look at the data.
7002          */
7003         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
7004             statype != CFG80211_STA_TDLS_PEER_SETUP)
7005                 params->link_sta_params.opmode_notif_used = false;
7006
7007         return 0;
7008 }
7009 EXPORT_SYMBOL(cfg80211_check_station_change);
7010
7011 /*
7012  * Get vlan interface making sure it is running and on the right wiphy.
7013  */
7014 static struct net_device *get_vlan(struct genl_info *info,
7015                                    struct cfg80211_registered_device *rdev)
7016 {
7017         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
7018         struct net_device *v;
7019         int ret;
7020
7021         if (!vlanattr)
7022                 return NULL;
7023
7024         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
7025         if (!v)
7026                 return ERR_PTR(-ENODEV);
7027
7028         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
7029                 ret = -EINVAL;
7030                 goto error;
7031         }
7032
7033         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
7034             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7035             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
7036                 ret = -EINVAL;
7037                 goto error;
7038         }
7039
7040         if (!netif_running(v)) {
7041                 ret = -ENETDOWN;
7042                 goto error;
7043         }
7044
7045         return v;
7046  error:
7047         dev_put(v);
7048         return ERR_PTR(ret);
7049 }
7050
7051 static int nl80211_parse_sta_wme(struct genl_info *info,
7052                                  struct station_parameters *params)
7053 {
7054         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
7055         struct nlattr *nla;
7056         int err;
7057
7058         /* parse WME attributes if present */
7059         if (!info->attrs[NL80211_ATTR_STA_WME])
7060                 return 0;
7061
7062         nla = info->attrs[NL80211_ATTR_STA_WME];
7063         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
7064                                           nl80211_sta_wme_policy,
7065                                           info->extack);
7066         if (err)
7067                 return err;
7068
7069         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
7070                 params->uapsd_queues = nla_get_u8(
7071                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
7072         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
7073                 return -EINVAL;
7074
7075         if (tb[NL80211_STA_WME_MAX_SP])
7076                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
7077
7078         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
7079                 return -EINVAL;
7080
7081         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
7082
7083         return 0;
7084 }
7085
7086 static int nl80211_parse_sta_channel_info(struct genl_info *info,
7087                                       struct station_parameters *params)
7088 {
7089         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
7090                 params->supported_channels =
7091                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7092                 params->supported_channels_len =
7093                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7094                 /*
7095                  * Need to include at least one (first channel, number of
7096                  * channels) tuple for each subband (checked in policy),
7097                  * and must have proper tuples for the rest of the data as well.
7098                  */
7099                 if (params->supported_channels_len % 2)
7100                         return -EINVAL;
7101         }
7102
7103         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
7104                 params->supported_oper_classes =
7105                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7106                 params->supported_oper_classes_len =
7107                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7108         }
7109         return 0;
7110 }
7111
7112 static int nl80211_set_station_tdls(struct genl_info *info,
7113                                     struct station_parameters *params)
7114 {
7115         int err;
7116         /* Dummy STA entry gets updated once the peer capabilities are known */
7117         if (info->attrs[NL80211_ATTR_PEER_AID])
7118                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7119         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7120                 params->link_sta_params.ht_capa =
7121                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7122         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7123                 params->link_sta_params.vht_capa =
7124                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7125         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7126                 params->link_sta_params.he_capa =
7127                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7128                 params->link_sta_params.he_capa_len =
7129                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7130
7131                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7132                         params->link_sta_params.eht_capa =
7133                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7134                         params->link_sta_params.eht_capa_len =
7135                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7136
7137                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
7138                                                         (const u8 *)params->link_sta_params.eht_capa,
7139                                                         params->link_sta_params.eht_capa_len,
7140                                                         false))
7141                                 return -EINVAL;
7142                 }
7143         }
7144
7145         err = nl80211_parse_sta_channel_info(info, params);
7146         if (err)
7147                 return err;
7148
7149         return nl80211_parse_sta_wme(info, params);
7150 }
7151
7152 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
7153                                              struct sta_txpwr *txpwr,
7154                                              bool *txpwr_set)
7155 {
7156         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7157         int idx;
7158
7159         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
7160                 if (!rdev->ops->set_tx_power ||
7161                     !wiphy_ext_feature_isset(&rdev->wiphy,
7162                                          NL80211_EXT_FEATURE_STA_TX_PWR))
7163                         return -EOPNOTSUPP;
7164
7165                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
7166                 txpwr->type = nla_get_u8(info->attrs[idx]);
7167
7168                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
7169                         idx = NL80211_ATTR_STA_TX_POWER;
7170
7171                         if (info->attrs[idx])
7172                                 txpwr->power = nla_get_s16(info->attrs[idx]);
7173                         else
7174                                 return -EINVAL;
7175                 }
7176
7177                 *txpwr_set = true;
7178         } else {
7179                 *txpwr_set = false;
7180         }
7181
7182         return 0;
7183 }
7184
7185 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
7186 {
7187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7188         struct net_device *dev = info->user_ptr[1];
7189         struct station_parameters params;
7190         u8 *mac_addr;
7191         int err;
7192
7193         memset(&params, 0, sizeof(params));
7194
7195         if (!rdev->ops->change_station)
7196                 return -EOPNOTSUPP;
7197
7198         /*
7199          * AID and listen_interval properties can be set only for unassociated
7200          * station. Include these parameters here and will check them in
7201          * cfg80211_check_station_change().
7202          */
7203         if (info->attrs[NL80211_ATTR_STA_AID])
7204                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7205
7206         if (info->attrs[NL80211_ATTR_VLAN_ID])
7207                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7208
7209         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7210                 params.listen_interval =
7211                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7212         else
7213                 params.listen_interval = -1;
7214
7215         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
7216                 params.support_p2p_ps =
7217                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7218         else
7219                 params.support_p2p_ps = -1;
7220
7221         if (!info->attrs[NL80211_ATTR_MAC])
7222                 return -EINVAL;
7223
7224         params.link_sta_params.link_id =
7225                 nl80211_link_id_or_invalid(info->attrs);
7226
7227         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7228                 /* If MLD_ADDR attribute is set then this is an MLD station
7229                  * and the MLD_ADDR attribute holds the MLD address and the
7230                  * MAC attribute holds for the LINK address.
7231                  * In that case, the link_id is also expected to be valid.
7232                  */
7233                 if (params.link_sta_params.link_id < 0)
7234                         return -EINVAL;
7235
7236                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7237                 params.link_sta_params.mld_mac = mac_addr;
7238                 params.link_sta_params.link_mac =
7239                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7240                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7241                         return -EINVAL;
7242         } else {
7243                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7244         }
7245
7246
7247         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7248                 params.link_sta_params.supported_rates =
7249                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7250                 params.link_sta_params.supported_rates_len =
7251                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7252         }
7253
7254         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7255                 params.capability =
7256                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7257                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7258         }
7259
7260         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7261                 params.ext_capab =
7262                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7263                 params.ext_capab_len =
7264                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7265         }
7266
7267         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7268                 return -EINVAL;
7269
7270         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7271                 params.plink_action =
7272                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7273
7274         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7275                 params.plink_state =
7276                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7277                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7278                         params.peer_aid = nla_get_u16(
7279                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7280                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7281         }
7282
7283         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7284                 params.local_pm = nla_get_u32(
7285                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7286
7287         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7288                 params.link_sta_params.opmode_notif_used = true;
7289                 params.link_sta_params.opmode_notif =
7290                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7291         }
7292
7293         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7294                 params.link_sta_params.he_6ghz_capa =
7295                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7296
7297         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7298                 params.airtime_weight =
7299                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7300
7301         if (params.airtime_weight &&
7302             !wiphy_ext_feature_isset(&rdev->wiphy,
7303                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7304                 return -EOPNOTSUPP;
7305
7306         err = nl80211_parse_sta_txpower_setting(info,
7307                                                 &params.link_sta_params.txpwr,
7308                                                 &params.link_sta_params.txpwr_set);
7309         if (err)
7310                 return err;
7311
7312         /* Include parameters for TDLS peer (will check later) */
7313         err = nl80211_set_station_tdls(info, &params);
7314         if (err)
7315                 return err;
7316
7317         params.vlan = get_vlan(info, rdev);
7318         if (IS_ERR(params.vlan))
7319                 return PTR_ERR(params.vlan);
7320
7321         switch (dev->ieee80211_ptr->iftype) {
7322         case NL80211_IFTYPE_AP:
7323         case NL80211_IFTYPE_AP_VLAN:
7324         case NL80211_IFTYPE_P2P_GO:
7325         case NL80211_IFTYPE_P2P_CLIENT:
7326         case NL80211_IFTYPE_STATION:
7327         case NL80211_IFTYPE_ADHOC:
7328         case NL80211_IFTYPE_MESH_POINT:
7329                 break;
7330         default:
7331                 err = -EOPNOTSUPP;
7332                 goto out_put_vlan;
7333         }
7334
7335         /* driver will call cfg80211_check_station_change() */
7336         err = rdev_change_station(rdev, dev, mac_addr, &params);
7337
7338  out_put_vlan:
7339         dev_put(params.vlan);
7340
7341         return err;
7342 }
7343
7344 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7345 {
7346         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7347         int err;
7348         struct net_device *dev = info->user_ptr[1];
7349         struct wireless_dev *wdev = dev->ieee80211_ptr;
7350         struct station_parameters params;
7351         u8 *mac_addr = NULL;
7352         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7353                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7354
7355         memset(&params, 0, sizeof(params));
7356
7357         if (!rdev->ops->add_station)
7358                 return -EOPNOTSUPP;
7359
7360         if (!info->attrs[NL80211_ATTR_MAC])
7361                 return -EINVAL;
7362
7363         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7364                 return -EINVAL;
7365
7366         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7367                 return -EINVAL;
7368
7369         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7370             !info->attrs[NL80211_ATTR_PEER_AID])
7371                 return -EINVAL;
7372
7373         params.link_sta_params.link_id =
7374                 nl80211_link_id_or_invalid(info->attrs);
7375
7376         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7377                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7378                 params.link_sta_params.mld_mac = mac_addr;
7379                 params.link_sta_params.link_mac =
7380                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7381                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7382                         return -EINVAL;
7383         } else {
7384                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7385         }
7386
7387         params.link_sta_params.supported_rates =
7388                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7389         params.link_sta_params.supported_rates_len =
7390                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7391         params.listen_interval =
7392                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7393
7394         if (info->attrs[NL80211_ATTR_VLAN_ID])
7395                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7396
7397         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7398                 params.support_p2p_ps =
7399                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7400         } else {
7401                 /*
7402                  * if not specified, assume it's supported for P2P GO interface,
7403                  * and is NOT supported for AP interface
7404                  */
7405                 params.support_p2p_ps =
7406                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7407         }
7408
7409         if (info->attrs[NL80211_ATTR_PEER_AID])
7410                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7411         else
7412                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7413
7414         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7415                 params.capability =
7416                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7417                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7418         }
7419
7420         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7421                 params.ext_capab =
7422                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7423                 params.ext_capab_len =
7424                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7425         }
7426
7427         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7428                 params.link_sta_params.ht_capa =
7429                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7430
7431         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7432                 params.link_sta_params.vht_capa =
7433                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7434
7435         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7436                 params.link_sta_params.he_capa =
7437                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7438                 params.link_sta_params.he_capa_len =
7439                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7440
7441                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7442                         params.link_sta_params.eht_capa =
7443                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7444                         params.link_sta_params.eht_capa_len =
7445                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7446
7447                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7448                                                         (const u8 *)params.link_sta_params.eht_capa,
7449                                                         params.link_sta_params.eht_capa_len,
7450                                                         false))
7451                                 return -EINVAL;
7452                 }
7453         }
7454
7455         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7456                 params.link_sta_params.he_6ghz_capa =
7457                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7458
7459         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7460                 params.link_sta_params.opmode_notif_used = true;
7461                 params.link_sta_params.opmode_notif =
7462                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7463         }
7464
7465         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7466                 params.plink_action =
7467                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7468
7469         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7470                 params.airtime_weight =
7471                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7472
7473         if (params.airtime_weight &&
7474             !wiphy_ext_feature_isset(&rdev->wiphy,
7475                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7476                 return -EOPNOTSUPP;
7477
7478         err = nl80211_parse_sta_txpower_setting(info,
7479                                                 &params.link_sta_params.txpwr,
7480                                                 &params.link_sta_params.txpwr_set);
7481         if (err)
7482                 return err;
7483
7484         err = nl80211_parse_sta_channel_info(info, &params);
7485         if (err)
7486                 return err;
7487
7488         err = nl80211_parse_sta_wme(info, &params);
7489         if (err)
7490                 return err;
7491
7492         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7493                 return -EINVAL;
7494
7495         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7496          * as userspace might just pass through the capabilities from the IEs
7497          * directly, rather than enforcing this restriction and returning an
7498          * error in this case.
7499          */
7500         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7501                 params.link_sta_params.ht_capa = NULL;
7502                 params.link_sta_params.vht_capa = NULL;
7503
7504                 /* HE and EHT require WME */
7505                 if (params.link_sta_params.he_capa_len ||
7506                     params.link_sta_params.he_6ghz_capa ||
7507                     params.link_sta_params.eht_capa_len)
7508                         return -EINVAL;
7509         }
7510
7511         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7512         if (params.link_sta_params.he_6ghz_capa &&
7513             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7514                 return -EINVAL;
7515
7516         /* When you run into this, adjust the code below for the new flag */
7517         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 8);
7518
7519         switch (dev->ieee80211_ptr->iftype) {
7520         case NL80211_IFTYPE_AP:
7521         case NL80211_IFTYPE_AP_VLAN:
7522         case NL80211_IFTYPE_P2P_GO:
7523                 /* ignore WME attributes if iface/sta is not capable */
7524                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7525                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7526                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7527
7528                 /* TDLS peers cannot be added */
7529                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7530                     info->attrs[NL80211_ATTR_PEER_AID])
7531                         return -EINVAL;
7532                 /* but don't bother the driver with it */
7533                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7534
7535                 /* allow authenticated/associated only if driver handles it */
7536                 if (!(rdev->wiphy.features &
7537                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7538                     params.sta_flags_mask & auth_assoc)
7539                         return -EINVAL;
7540
7541                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7542                                              NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT) &&
7543                     params.sta_flags_mask & BIT(NL80211_STA_FLAG_SPP_AMSDU))
7544                         return -EINVAL;
7545
7546                 /* Older userspace, or userspace wanting to be compatible with
7547                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7548                  * and assoc flags in the mask, but assumes the station will be
7549                  * added as associated anyway since this was the required driver
7550                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7551                  * introduced.
7552                  * In order to not bother drivers with this quirk in the API
7553                  * set the flags in both the mask and set for new stations in
7554                  * this case.
7555                  */
7556                 if (!(params.sta_flags_mask & auth_assoc)) {
7557                         params.sta_flags_mask |= auth_assoc;
7558                         params.sta_flags_set |= auth_assoc;
7559                 }
7560
7561                 /* must be last in here for error handling */
7562                 params.vlan = get_vlan(info, rdev);
7563                 if (IS_ERR(params.vlan))
7564                         return PTR_ERR(params.vlan);
7565                 break;
7566         case NL80211_IFTYPE_MESH_POINT:
7567                 /* ignore uAPSD data */
7568                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7569
7570                 /* associated is disallowed */
7571                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7572                         return -EINVAL;
7573                 /* TDLS peers cannot be added */
7574                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7575                     info->attrs[NL80211_ATTR_PEER_AID])
7576                         return -EINVAL;
7577                 break;
7578         case NL80211_IFTYPE_STATION:
7579         case NL80211_IFTYPE_P2P_CLIENT:
7580                 /* ignore uAPSD data */
7581                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7582
7583                 /* these are disallowed */
7584                 if (params.sta_flags_mask &
7585                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7586                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7587                         return -EINVAL;
7588                 /* Only TDLS peers can be added */
7589                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7590                         return -EINVAL;
7591                 /* Can only add if TDLS ... */
7592                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7593                         return -EOPNOTSUPP;
7594                 /* ... with external setup is supported */
7595                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7596                         return -EOPNOTSUPP;
7597                 /*
7598                  * Older wpa_supplicant versions always mark the TDLS peer
7599                  * as authorized, but it shouldn't yet be.
7600                  */
7601                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7602                 break;
7603         default:
7604                 return -EOPNOTSUPP;
7605         }
7606
7607         /* be aware of params.vlan when changing code here */
7608
7609         if (wdev->valid_links) {
7610                 if (params.link_sta_params.link_id < 0) {
7611                         err = -EINVAL;
7612                         goto out;
7613                 }
7614                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7615                         err = -ENOLINK;
7616                         goto out;
7617                 }
7618         } else {
7619                 if (params.link_sta_params.link_id >= 0) {
7620                         err = -EINVAL;
7621                         goto out;
7622                 }
7623         }
7624         err = rdev_add_station(rdev, dev, mac_addr, &params);
7625 out:
7626         dev_put(params.vlan);
7627         return err;
7628 }
7629
7630 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7631 {
7632         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7633         struct net_device *dev = info->user_ptr[1];
7634         struct wireless_dev *wdev = dev->ieee80211_ptr;
7635         struct station_del_parameters params;
7636         int link_id = nl80211_link_id_or_invalid(info->attrs);
7637
7638         memset(&params, 0, sizeof(params));
7639
7640         if (info->attrs[NL80211_ATTR_MAC])
7641                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7642
7643         switch (wdev->iftype) {
7644         case NL80211_IFTYPE_AP:
7645         case NL80211_IFTYPE_AP_VLAN:
7646         case NL80211_IFTYPE_MESH_POINT:
7647         case NL80211_IFTYPE_P2P_GO:
7648                 /* always accept these */
7649                 break;
7650         case NL80211_IFTYPE_ADHOC:
7651                 /* conditionally accept */
7652                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7653                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7654                         break;
7655                 return -EINVAL;
7656         default:
7657                 return -EINVAL;
7658         }
7659
7660         if (!rdev->ops->del_station)
7661                 return -EOPNOTSUPP;
7662
7663         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7664                 params.subtype =
7665                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7666                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7667                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7668                         return -EINVAL;
7669         } else {
7670                 /* Default to Deauthentication frame */
7671                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7672         }
7673
7674         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7675                 params.reason_code =
7676                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7677                 if (params.reason_code == 0)
7678                         return -EINVAL; /* 0 is reserved */
7679         } else {
7680                 /* Default to reason code 2 */
7681                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7682         }
7683
7684         /* Link ID not expected in case of non-ML operation */
7685         if (!wdev->valid_links && link_id != -1)
7686                 return -EINVAL;
7687
7688         /* If given, a valid link ID should be passed during MLO */
7689         if (wdev->valid_links && link_id >= 0 &&
7690             !(wdev->valid_links & BIT(link_id)))
7691                 return -EINVAL;
7692
7693         params.link_id = link_id;
7694
7695         return rdev_del_station(rdev, dev, &params);
7696 }
7697
7698 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7699                                 int flags, struct net_device *dev,
7700                                 u8 *dst, u8 *next_hop,
7701                                 struct mpath_info *pinfo)
7702 {
7703         void *hdr;
7704         struct nlattr *pinfoattr;
7705
7706         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7707         if (!hdr)
7708                 return -1;
7709
7710         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7711             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7712             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7713             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7714                 goto nla_put_failure;
7715
7716         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7717         if (!pinfoattr)
7718                 goto nla_put_failure;
7719         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7720             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7721                         pinfo->frame_qlen))
7722                 goto nla_put_failure;
7723         if (((pinfo->filled & MPATH_INFO_SN) &&
7724              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7725             ((pinfo->filled & MPATH_INFO_METRIC) &&
7726              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7727                          pinfo->metric)) ||
7728             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7729              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7730                          pinfo->exptime)) ||
7731             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7732              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7733                         pinfo->flags)) ||
7734             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7735              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7736                          pinfo->discovery_timeout)) ||
7737             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7738              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7739                         pinfo->discovery_retries)) ||
7740             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7741              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7742                         pinfo->hop_count)) ||
7743             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7744              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7745                          pinfo->path_change_count)))
7746                 goto nla_put_failure;
7747
7748         nla_nest_end(msg, pinfoattr);
7749
7750         genlmsg_end(msg, hdr);
7751         return 0;
7752
7753  nla_put_failure:
7754         genlmsg_cancel(msg, hdr);
7755         return -EMSGSIZE;
7756 }
7757
7758 static int nl80211_dump_mpath(struct sk_buff *skb,
7759                               struct netlink_callback *cb)
7760 {
7761         struct mpath_info pinfo;
7762         struct cfg80211_registered_device *rdev;
7763         struct wireless_dev *wdev;
7764         u8 dst[ETH_ALEN];
7765         u8 next_hop[ETH_ALEN];
7766         int path_idx = cb->args[2];
7767         int err;
7768
7769         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7770         if (err)
7771                 return err;
7772         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7773         __acquire(&rdev->wiphy.mtx);
7774
7775         if (!rdev->ops->dump_mpath) {
7776                 err = -EOPNOTSUPP;
7777                 goto out_err;
7778         }
7779
7780         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7781                 err = -EOPNOTSUPP;
7782                 goto out_err;
7783         }
7784
7785         while (1) {
7786                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7787                                       next_hop, &pinfo);
7788                 if (err == -ENOENT)
7789                         break;
7790                 if (err)
7791                         goto out_err;
7792
7793                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7794                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7795                                        wdev->netdev, dst, next_hop,
7796                                        &pinfo) < 0)
7797                         goto out;
7798
7799                 path_idx++;
7800         }
7801
7802  out:
7803         cb->args[2] = path_idx;
7804         err = skb->len;
7805  out_err:
7806         wiphy_unlock(&rdev->wiphy);
7807         return err;
7808 }
7809
7810 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7811 {
7812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7813         int err;
7814         struct net_device *dev = info->user_ptr[1];
7815         struct mpath_info pinfo;
7816         struct sk_buff *msg;
7817         u8 *dst = NULL;
7818         u8 next_hop[ETH_ALEN];
7819
7820         memset(&pinfo, 0, sizeof(pinfo));
7821
7822         if (!info->attrs[NL80211_ATTR_MAC])
7823                 return -EINVAL;
7824
7825         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7826
7827         if (!rdev->ops->get_mpath)
7828                 return -EOPNOTSUPP;
7829
7830         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7831                 return -EOPNOTSUPP;
7832
7833         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7834         if (err)
7835                 return err;
7836
7837         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7838         if (!msg)
7839                 return -ENOMEM;
7840
7841         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7842                                  dev, dst, next_hop, &pinfo) < 0) {
7843                 nlmsg_free(msg);
7844                 return -ENOBUFS;
7845         }
7846
7847         return genlmsg_reply(msg, info);
7848 }
7849
7850 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7851 {
7852         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7853         struct net_device *dev = info->user_ptr[1];
7854         u8 *dst = NULL;
7855         u8 *next_hop = NULL;
7856
7857         if (!info->attrs[NL80211_ATTR_MAC])
7858                 return -EINVAL;
7859
7860         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7861                 return -EINVAL;
7862
7863         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7864         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7865
7866         if (!rdev->ops->change_mpath)
7867                 return -EOPNOTSUPP;
7868
7869         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7870                 return -EOPNOTSUPP;
7871
7872         return rdev_change_mpath(rdev, dev, dst, next_hop);
7873 }
7874
7875 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7876 {
7877         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7878         struct net_device *dev = info->user_ptr[1];
7879         u8 *dst = NULL;
7880         u8 *next_hop = NULL;
7881
7882         if (!info->attrs[NL80211_ATTR_MAC])
7883                 return -EINVAL;
7884
7885         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7886                 return -EINVAL;
7887
7888         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7889         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7890
7891         if (!rdev->ops->add_mpath)
7892                 return -EOPNOTSUPP;
7893
7894         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7895                 return -EOPNOTSUPP;
7896
7897         return rdev_add_mpath(rdev, dev, dst, next_hop);
7898 }
7899
7900 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7901 {
7902         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7903         struct net_device *dev = info->user_ptr[1];
7904         u8 *dst = NULL;
7905
7906         if (info->attrs[NL80211_ATTR_MAC])
7907                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7908
7909         if (!rdev->ops->del_mpath)
7910                 return -EOPNOTSUPP;
7911
7912         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7913                 return -EOPNOTSUPP;
7914
7915         return rdev_del_mpath(rdev, dev, dst);
7916 }
7917
7918 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7919 {
7920         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7921         int err;
7922         struct net_device *dev = info->user_ptr[1];
7923         struct mpath_info pinfo;
7924         struct sk_buff *msg;
7925         u8 *dst = NULL;
7926         u8 mpp[ETH_ALEN];
7927
7928         memset(&pinfo, 0, sizeof(pinfo));
7929
7930         if (!info->attrs[NL80211_ATTR_MAC])
7931                 return -EINVAL;
7932
7933         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7934
7935         if (!rdev->ops->get_mpp)
7936                 return -EOPNOTSUPP;
7937
7938         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7939                 return -EOPNOTSUPP;
7940
7941         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7942         if (err)
7943                 return err;
7944
7945         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7946         if (!msg)
7947                 return -ENOMEM;
7948
7949         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7950                                dev, dst, mpp, &pinfo) < 0) {
7951                 nlmsg_free(msg);
7952                 return -ENOBUFS;
7953         }
7954
7955         return genlmsg_reply(msg, info);
7956 }
7957
7958 static int nl80211_dump_mpp(struct sk_buff *skb,
7959                             struct netlink_callback *cb)
7960 {
7961         struct mpath_info pinfo;
7962         struct cfg80211_registered_device *rdev;
7963         struct wireless_dev *wdev;
7964         u8 dst[ETH_ALEN];
7965         u8 mpp[ETH_ALEN];
7966         int path_idx = cb->args[2];
7967         int err;
7968
7969         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7970         if (err)
7971                 return err;
7972         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7973         __acquire(&rdev->wiphy.mtx);
7974
7975         if (!rdev->ops->dump_mpp) {
7976                 err = -EOPNOTSUPP;
7977                 goto out_err;
7978         }
7979
7980         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7981                 err = -EOPNOTSUPP;
7982                 goto out_err;
7983         }
7984
7985         while (1) {
7986                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7987                                     mpp, &pinfo);
7988                 if (err == -ENOENT)
7989                         break;
7990                 if (err)
7991                         goto out_err;
7992
7993                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7994                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7995                                        wdev->netdev, dst, mpp,
7996                                        &pinfo) < 0)
7997                         goto out;
7998
7999                 path_idx++;
8000         }
8001
8002  out:
8003         cb->args[2] = path_idx;
8004         err = skb->len;
8005  out_err:
8006         wiphy_unlock(&rdev->wiphy);
8007         return err;
8008 }
8009
8010 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
8011 {
8012         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8013         struct net_device *dev = info->user_ptr[1];
8014         struct bss_parameters params;
8015
8016         memset(&params, 0, sizeof(params));
8017         params.link_id = nl80211_link_id_or_invalid(info->attrs);
8018         /* default to not changing parameters */
8019         params.use_cts_prot = -1;
8020         params.use_short_preamble = -1;
8021         params.use_short_slot_time = -1;
8022         params.ap_isolate = -1;
8023         params.ht_opmode = -1;
8024         params.p2p_ctwindow = -1;
8025         params.p2p_opp_ps = -1;
8026
8027         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
8028                 params.use_cts_prot =
8029                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
8030         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
8031                 params.use_short_preamble =
8032                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
8033         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
8034                 params.use_short_slot_time =
8035                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
8036         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8037                 params.basic_rates =
8038                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8039                 params.basic_rates_len =
8040                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8041         }
8042         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
8043                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
8044         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
8045                 params.ht_opmode =
8046                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
8047
8048         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
8049                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8050                         return -EINVAL;
8051                 params.p2p_ctwindow =
8052                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
8053                 if (params.p2p_ctwindow != 0 &&
8054                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
8055                         return -EINVAL;
8056         }
8057
8058         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
8059                 u8 tmp;
8060
8061                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8062                         return -EINVAL;
8063                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
8064                 params.p2p_opp_ps = tmp;
8065                 if (params.p2p_opp_ps &&
8066                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
8067                         return -EINVAL;
8068         }
8069
8070         if (!rdev->ops->change_bss)
8071                 return -EOPNOTSUPP;
8072
8073         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
8074             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8075                 return -EOPNOTSUPP;
8076
8077         return rdev_change_bss(rdev, dev, &params);
8078 }
8079
8080 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
8081 {
8082         char *data = NULL;
8083         bool is_indoor;
8084         enum nl80211_user_reg_hint_type user_reg_hint_type;
8085         u32 owner_nlportid;
8086
8087         /*
8088          * You should only get this when cfg80211 hasn't yet initialized
8089          * completely when built-in to the kernel right between the time
8090          * window between nl80211_init() and regulatory_init(), if that is
8091          * even possible.
8092          */
8093         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
8094                 return -EINPROGRESS;
8095
8096         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
8097                 user_reg_hint_type =
8098                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
8099         else
8100                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
8101
8102         switch (user_reg_hint_type) {
8103         case NL80211_USER_REG_HINT_USER:
8104         case NL80211_USER_REG_HINT_CELL_BASE:
8105                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8106                         return -EINVAL;
8107
8108                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8109                 return regulatory_hint_user(data, user_reg_hint_type);
8110         case NL80211_USER_REG_HINT_INDOOR:
8111                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8112                         owner_nlportid = info->snd_portid;
8113                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
8114                 } else {
8115                         owner_nlportid = 0;
8116                         is_indoor = true;
8117                 }
8118
8119                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
8120         default:
8121                 return -EINVAL;
8122         }
8123 }
8124
8125 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
8126 {
8127         return reg_reload_regdb();
8128 }
8129
8130 static int nl80211_get_mesh_config(struct sk_buff *skb,
8131                                    struct genl_info *info)
8132 {
8133         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8134         struct net_device *dev = info->user_ptr[1];
8135         struct wireless_dev *wdev = dev->ieee80211_ptr;
8136         struct mesh_config cur_params;
8137         int err = 0;
8138         void *hdr;
8139         struct nlattr *pinfoattr;
8140         struct sk_buff *msg;
8141
8142         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8143                 return -EOPNOTSUPP;
8144
8145         if (!rdev->ops->get_mesh_config)
8146                 return -EOPNOTSUPP;
8147
8148         /* If not connected, get default parameters */
8149         if (!wdev->u.mesh.id_len)
8150                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
8151         else
8152                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
8153
8154         if (err)
8155                 return err;
8156
8157         /* Draw up a netlink message to send back */
8158         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8159         if (!msg)
8160                 return -ENOMEM;
8161         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8162                              NL80211_CMD_GET_MESH_CONFIG);
8163         if (!hdr)
8164                 goto out;
8165         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
8166         if (!pinfoattr)
8167                 goto nla_put_failure;
8168         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8169             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
8170                         cur_params.dot11MeshRetryTimeout) ||
8171             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
8172                         cur_params.dot11MeshConfirmTimeout) ||
8173             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
8174                         cur_params.dot11MeshHoldingTimeout) ||
8175             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8176                         cur_params.dot11MeshMaxPeerLinks) ||
8177             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
8178                        cur_params.dot11MeshMaxRetries) ||
8179             nla_put_u8(msg, NL80211_MESHCONF_TTL,
8180                        cur_params.dot11MeshTTL) ||
8181             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
8182                        cur_params.element_ttl) ||
8183             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8184                        cur_params.auto_open_plinks) ||
8185             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8186                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
8187             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8188                        cur_params.dot11MeshHWMPmaxPREQretries) ||
8189             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
8190                         cur_params.path_refresh_time) ||
8191             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8192                         cur_params.min_discovery_timeout) ||
8193             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8194                         cur_params.dot11MeshHWMPactivePathTimeout) ||
8195             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8196                         cur_params.dot11MeshHWMPpreqMinInterval) ||
8197             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8198                         cur_params.dot11MeshHWMPperrMinInterval) ||
8199             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8200                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
8201             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
8202                        cur_params.dot11MeshHWMPRootMode) ||
8203             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8204                         cur_params.dot11MeshHWMPRannInterval) ||
8205             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8206                        cur_params.dot11MeshGateAnnouncementProtocol) ||
8207             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
8208                        cur_params.dot11MeshForwarding) ||
8209             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
8210                         cur_params.rssi_threshold) ||
8211             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
8212                         cur_params.ht_opmode) ||
8213             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8214                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
8215             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8216                         cur_params.dot11MeshHWMProotInterval) ||
8217             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8218                         cur_params.dot11MeshHWMPconfirmationInterval) ||
8219             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
8220                         cur_params.power_mode) ||
8221             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
8222                         cur_params.dot11MeshAwakeWindowDuration) ||
8223             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8224                         cur_params.plink_timeout) ||
8225             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
8226                        cur_params.dot11MeshConnectedToMeshGate) ||
8227             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
8228                        cur_params.dot11MeshNolearn) ||
8229             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8230                        cur_params.dot11MeshConnectedToAuthServer))
8231                 goto nla_put_failure;
8232         nla_nest_end(msg, pinfoattr);
8233         genlmsg_end(msg, hdr);
8234         return genlmsg_reply(msg, info);
8235
8236  nla_put_failure:
8237  out:
8238         nlmsg_free(msg);
8239         return -ENOBUFS;
8240 }
8241
8242 static const struct nla_policy
8243 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8244         [NL80211_MESHCONF_RETRY_TIMEOUT] =
8245                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8246         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8247                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8248         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8249                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8250         [NL80211_MESHCONF_MAX_PEER_LINKS] =
8251                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8252         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8253         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8254         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8255         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8256         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8257                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8258         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8259         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8260         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8261         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8262         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8263                 NLA_POLICY_MIN(NLA_U16, 1),
8264         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8265                 NLA_POLICY_MIN(NLA_U16, 1),
8266         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8267                 NLA_POLICY_MIN(NLA_U16, 1),
8268         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8269         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8270                 NLA_POLICY_MIN(NLA_U16, 1),
8271         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8272         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8273         [NL80211_MESHCONF_RSSI_THRESHOLD] =
8274                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8275         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8276         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8277         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8278                 NLA_POLICY_MIN(NLA_U16, 1),
8279         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8280                 NLA_POLICY_MIN(NLA_U16, 1),
8281         [NL80211_MESHCONF_POWER_MODE] =
8282                 NLA_POLICY_RANGE(NLA_U32,
8283                                  NL80211_MESH_POWER_ACTIVE,
8284                                  NL80211_MESH_POWER_MAX),
8285         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8286         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8287         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8288         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8289         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8290 };
8291
8292 static const struct nla_policy
8293         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8294         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8295         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8296         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8297         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8298         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8299         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8300         [NL80211_MESH_SETUP_IE] =
8301                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8302                                        IEEE80211_MAX_DATA_LEN),
8303         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8304 };
8305
8306 static int nl80211_parse_mesh_config(struct genl_info *info,
8307                                      struct mesh_config *cfg,
8308                                      u32 *mask_out)
8309 {
8310         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8311         u32 mask = 0;
8312         u16 ht_opmode;
8313
8314 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
8315 do {                                                                    \
8316         if (tb[attr]) {                                                 \
8317                 cfg->param = fn(tb[attr]);                              \
8318                 mask |= BIT((attr) - 1);                                \
8319         }                                                               \
8320 } while (0)
8321
8322         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8323                 return -EINVAL;
8324         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8325                 return -EINVAL;
8326
8327         /* This makes sure that there aren't more than 32 mesh config
8328          * parameters (otherwise our bitfield scheme would not work.) */
8329         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8330
8331         /* Fill in the params struct */
8332         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8333                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8334         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8335                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8336                                   nla_get_u16);
8337         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8338                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8339                                   nla_get_u16);
8340         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8341                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8342                                   nla_get_u16);
8343         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8344                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8345         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8346                                   NL80211_MESHCONF_TTL, nla_get_u8);
8347         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8348                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8349         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8350                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8351                                   nla_get_u8);
8352         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8353                                   mask,
8354                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8355                                   nla_get_u32);
8356         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8357                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8358                                   nla_get_u8);
8359         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8360                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8361                                   nla_get_u32);
8362         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8363             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8364                 return -EINVAL;
8365         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8366                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8367                                   nla_get_u16);
8368         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8369                                   mask,
8370                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8371                                   nla_get_u32);
8372         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8373             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8374              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8375                 return -EINVAL;
8376         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8377                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8378                                   nla_get_u16);
8379         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8380                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8381                                   nla_get_u16);
8382         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8383                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8384                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8385                                   nla_get_u16);
8386         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8387                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8388         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8389                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8390                                   nla_get_u16);
8391         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8392                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8393                                   nla_get_u8);
8394         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8395                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8396         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8397                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8398                                   nla_get_s32);
8399         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8400                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8401                                   nla_get_u8);
8402         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8403                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8404                                   nla_get_u8);
8405         /*
8406          * Check HT operation mode based on
8407          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8408          */
8409         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8410                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8411
8412                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8413                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8414                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8415                         return -EINVAL;
8416
8417                 /* NON_HT_STA bit is reserved, but some programs set it */
8418                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8419
8420                 cfg->ht_opmode = ht_opmode;
8421                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8422         }
8423         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8424                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8425                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8426                                   nla_get_u32);
8427         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8428             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8429              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8430                 return -EINVAL;
8431         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8432                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8433                                   nla_get_u16);
8434         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8435                                   mask,
8436                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8437                                   nla_get_u16);
8438         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8439                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8440         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8441                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8442         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8443                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8444         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8445                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8446         if (mask_out)
8447                 *mask_out = mask;
8448
8449         return 0;
8450
8451 #undef FILL_IN_MESH_PARAM_IF_SET
8452 }
8453
8454 static int nl80211_parse_mesh_setup(struct genl_info *info,
8455                                      struct mesh_setup *setup)
8456 {
8457         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8458         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8459
8460         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8461                 return -EINVAL;
8462         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8463                 return -EINVAL;
8464
8465         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8466                 setup->sync_method =
8467                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8468                  IEEE80211_SYNC_METHOD_VENDOR :
8469                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8470
8471         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8472                 setup->path_sel_proto =
8473                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8474                  IEEE80211_PATH_PROTOCOL_VENDOR :
8475                  IEEE80211_PATH_PROTOCOL_HWMP;
8476
8477         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8478                 setup->path_metric =
8479                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8480                  IEEE80211_PATH_METRIC_VENDOR :
8481                  IEEE80211_PATH_METRIC_AIRTIME;
8482
8483         if (tb[NL80211_MESH_SETUP_IE]) {
8484                 struct nlattr *ieattr =
8485                         tb[NL80211_MESH_SETUP_IE];
8486                 setup->ie = nla_data(ieattr);
8487                 setup->ie_len = nla_len(ieattr);
8488         }
8489         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8490             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8491                 return -EINVAL;
8492         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8493         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8494         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8495         if (setup->is_secure)
8496                 setup->user_mpm = true;
8497
8498         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8499                 if (!setup->user_mpm)
8500                         return -EINVAL;
8501                 setup->auth_id =
8502                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8503         }
8504
8505         return 0;
8506 }
8507
8508 static int nl80211_update_mesh_config(struct sk_buff *skb,
8509                                       struct genl_info *info)
8510 {
8511         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8512         struct net_device *dev = info->user_ptr[1];
8513         struct wireless_dev *wdev = dev->ieee80211_ptr;
8514         struct mesh_config cfg = {};
8515         u32 mask;
8516         int err;
8517
8518         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8519                 return -EOPNOTSUPP;
8520
8521         if (!rdev->ops->update_mesh_config)
8522                 return -EOPNOTSUPP;
8523
8524         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8525         if (err)
8526                 return err;
8527
8528         if (!wdev->u.mesh.id_len)
8529                 err = -ENOLINK;
8530
8531         if (!err)
8532                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8533
8534         return err;
8535 }
8536
8537 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8538                               struct sk_buff *msg)
8539 {
8540         struct nlattr *nl_reg_rules;
8541         unsigned int i;
8542
8543         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8544             (regdom->dfs_region &&
8545              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8546                 goto nla_put_failure;
8547
8548         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8549         if (!nl_reg_rules)
8550                 goto nla_put_failure;
8551
8552         for (i = 0; i < regdom->n_reg_rules; i++) {
8553                 struct nlattr *nl_reg_rule;
8554                 const struct ieee80211_reg_rule *reg_rule;
8555                 const struct ieee80211_freq_range *freq_range;
8556                 const struct ieee80211_power_rule *power_rule;
8557                 unsigned int max_bandwidth_khz;
8558
8559                 reg_rule = &regdom->reg_rules[i];
8560                 freq_range = &reg_rule->freq_range;
8561                 power_rule = &reg_rule->power_rule;
8562
8563                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8564                 if (!nl_reg_rule)
8565                         goto nla_put_failure;
8566
8567                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8568                 if (!max_bandwidth_khz)
8569                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8570                                                                   reg_rule);
8571
8572                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8573                                 reg_rule->flags) ||
8574                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8575                                 freq_range->start_freq_khz) ||
8576                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8577                                 freq_range->end_freq_khz) ||
8578                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8579                                 max_bandwidth_khz) ||
8580                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8581                                 power_rule->max_antenna_gain) ||
8582                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8583                                 power_rule->max_eirp) ||
8584                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8585                                 reg_rule->dfs_cac_ms))
8586                         goto nla_put_failure;
8587
8588                 if ((reg_rule->flags & NL80211_RRF_PSD) &&
8589                     nla_put_s8(msg, NL80211_ATTR_POWER_RULE_PSD,
8590                                reg_rule->psd))
8591                         goto nla_put_failure;
8592
8593                 nla_nest_end(msg, nl_reg_rule);
8594         }
8595
8596         nla_nest_end(msg, nl_reg_rules);
8597         return 0;
8598
8599 nla_put_failure:
8600         return -EMSGSIZE;
8601 }
8602
8603 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8604 {
8605         const struct ieee80211_regdomain *regdom = NULL;
8606         struct cfg80211_registered_device *rdev;
8607         struct wiphy *wiphy = NULL;
8608         struct sk_buff *msg;
8609         int err = -EMSGSIZE;
8610         void *hdr;
8611
8612         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8613         if (!msg)
8614                 return -ENOBUFS;
8615
8616         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8617                              NL80211_CMD_GET_REG);
8618         if (!hdr)
8619                 goto put_failure;
8620
8621         rtnl_lock();
8622
8623         if (info->attrs[NL80211_ATTR_WIPHY]) {
8624                 bool self_managed;
8625
8626                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8627                 if (IS_ERR(rdev)) {
8628                         err = PTR_ERR(rdev);
8629                         goto nla_put_failure;
8630                 }
8631
8632                 wiphy = &rdev->wiphy;
8633                 self_managed = wiphy->regulatory_flags &
8634                                REGULATORY_WIPHY_SELF_MANAGED;
8635
8636                 rcu_read_lock();
8637
8638                 regdom = get_wiphy_regdom(wiphy);
8639
8640                 /* a self-managed-reg device must have a private regdom */
8641                 if (WARN_ON(!regdom && self_managed)) {
8642                         err = -EINVAL;
8643                         goto nla_put_failure_rcu;
8644                 }
8645
8646                 if (regdom &&
8647                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8648                         goto nla_put_failure_rcu;
8649         } else {
8650                 rcu_read_lock();
8651         }
8652
8653         if (!wiphy && reg_last_request_cell_base() &&
8654             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8655                         NL80211_USER_REG_HINT_CELL_BASE))
8656                 goto nla_put_failure_rcu;
8657
8658         if (!regdom)
8659                 regdom = rcu_dereference(cfg80211_regdomain);
8660
8661         if (nl80211_put_regdom(regdom, msg))
8662                 goto nla_put_failure_rcu;
8663
8664         rcu_read_unlock();
8665
8666         genlmsg_end(msg, hdr);
8667         rtnl_unlock();
8668         return genlmsg_reply(msg, info);
8669
8670 nla_put_failure_rcu:
8671         rcu_read_unlock();
8672 nla_put_failure:
8673         rtnl_unlock();
8674 put_failure:
8675         nlmsg_free(msg);
8676         return err;
8677 }
8678
8679 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8680                                u32 seq, int flags, struct wiphy *wiphy,
8681                                const struct ieee80211_regdomain *regdom)
8682 {
8683         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8684                                    NL80211_CMD_GET_REG);
8685
8686         if (!hdr)
8687                 return -1;
8688
8689         genl_dump_check_consistent(cb, hdr);
8690
8691         if (nl80211_put_regdom(regdom, msg))
8692                 goto nla_put_failure;
8693
8694         if (!wiphy && reg_last_request_cell_base() &&
8695             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8696                         NL80211_USER_REG_HINT_CELL_BASE))
8697                 goto nla_put_failure;
8698
8699         if (wiphy &&
8700             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8701                 goto nla_put_failure;
8702
8703         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8704             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8705                 goto nla_put_failure;
8706
8707         genlmsg_end(msg, hdr);
8708         return 0;
8709
8710 nla_put_failure:
8711         genlmsg_cancel(msg, hdr);
8712         return -EMSGSIZE;
8713 }
8714
8715 static int nl80211_get_reg_dump(struct sk_buff *skb,
8716                                 struct netlink_callback *cb)
8717 {
8718         const struct ieee80211_regdomain *regdom = NULL;
8719         struct cfg80211_registered_device *rdev;
8720         int err, reg_idx, start = cb->args[2];
8721
8722         rcu_read_lock();
8723
8724         if (cfg80211_regdomain && start == 0) {
8725                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8726                                           NLM_F_MULTI, NULL,
8727                                           rcu_dereference(cfg80211_regdomain));
8728                 if (err < 0)
8729                         goto out_err;
8730         }
8731
8732         /* the global regdom is idx 0 */
8733         reg_idx = 1;
8734         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8735                 regdom = get_wiphy_regdom(&rdev->wiphy);
8736                 if (!regdom)
8737                         continue;
8738
8739                 if (++reg_idx <= start)
8740                         continue;
8741
8742                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8743                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8744                 if (err < 0) {
8745                         reg_idx--;
8746                         break;
8747                 }
8748         }
8749
8750         cb->args[2] = reg_idx;
8751         err = skb->len;
8752 out_err:
8753         rcu_read_unlock();
8754         return err;
8755 }
8756
8757 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8758 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8759         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8760         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8761         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8762         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8763         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8764         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8765         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8766 };
8767
8768 static int parse_reg_rule(struct nlattr *tb[],
8769         struct ieee80211_reg_rule *reg_rule)
8770 {
8771         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8772         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8773
8774         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8775                 return -EINVAL;
8776         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8777                 return -EINVAL;
8778         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8779                 return -EINVAL;
8780         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8781                 return -EINVAL;
8782         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8783                 return -EINVAL;
8784
8785         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8786
8787         freq_range->start_freq_khz =
8788                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8789         freq_range->end_freq_khz =
8790                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8791         freq_range->max_bandwidth_khz =
8792                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8793
8794         power_rule->max_eirp =
8795                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8796
8797         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8798                 power_rule->max_antenna_gain =
8799                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8800
8801         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8802                 reg_rule->dfs_cac_ms =
8803                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8804
8805         return 0;
8806 }
8807
8808 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8809 {
8810         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8811         struct nlattr *nl_reg_rule;
8812         char *alpha2;
8813         int rem_reg_rules, r;
8814         u32 num_rules = 0, rule_idx = 0;
8815         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8816         struct ieee80211_regdomain *rd;
8817
8818         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8819                 return -EINVAL;
8820
8821         if (!info->attrs[NL80211_ATTR_REG_RULES])
8822                 return -EINVAL;
8823
8824         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8825
8826         if (info->attrs[NL80211_ATTR_DFS_REGION])
8827                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8828
8829         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8830                             rem_reg_rules) {
8831                 num_rules++;
8832                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8833                         return -EINVAL;
8834         }
8835
8836         rtnl_lock();
8837         if (!reg_is_valid_request(alpha2)) {
8838                 r = -EINVAL;
8839                 goto out;
8840         }
8841
8842         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8843         if (!rd) {
8844                 r = -ENOMEM;
8845                 goto out;
8846         }
8847
8848         rd->n_reg_rules = num_rules;
8849         rd->alpha2[0] = alpha2[0];
8850         rd->alpha2[1] = alpha2[1];
8851
8852         /*
8853          * Disable DFS master mode if the DFS region was
8854          * not supported or known on this kernel.
8855          */
8856         if (reg_supported_dfs_region(dfs_region))
8857                 rd->dfs_region = dfs_region;
8858
8859         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8860                             rem_reg_rules) {
8861                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8862                                                 nl_reg_rule, reg_rule_policy,
8863                                                 info->extack);
8864                 if (r)
8865                         goto bad_reg;
8866                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8867                 if (r)
8868                         goto bad_reg;
8869
8870                 rule_idx++;
8871
8872                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8873                         r = -EINVAL;
8874                         goto bad_reg;
8875                 }
8876         }
8877
8878         r = set_regdom(rd, REGD_SOURCE_CRDA);
8879         /* set_regdom takes ownership of rd */
8880         rd = NULL;
8881  bad_reg:
8882         kfree(rd);
8883  out:
8884         rtnl_unlock();
8885         return r;
8886 }
8887 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8888
8889 static int validate_scan_freqs(struct nlattr *freqs)
8890 {
8891         struct nlattr *attr1, *attr2;
8892         int n_channels = 0, tmp1, tmp2;
8893
8894         nla_for_each_nested(attr1, freqs, tmp1)
8895                 if (nla_len(attr1) != sizeof(u32))
8896                         return 0;
8897
8898         nla_for_each_nested(attr1, freqs, tmp1) {
8899                 n_channels++;
8900                 /*
8901                  * Some hardware has a limited channel list for
8902                  * scanning, and it is pretty much nonsensical
8903                  * to scan for a channel twice, so disallow that
8904                  * and don't require drivers to check that the
8905                  * channel list they get isn't longer than what
8906                  * they can scan, as long as they can scan all
8907                  * the channels they registered at once.
8908                  */
8909                 nla_for_each_nested(attr2, freqs, tmp2)
8910                         if (attr1 != attr2 &&
8911                             nla_get_u32(attr1) == nla_get_u32(attr2))
8912                                 return 0;
8913         }
8914
8915         return n_channels;
8916 }
8917
8918 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8919 {
8920         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8921 }
8922
8923 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8924                             struct cfg80211_bss_selection *bss_select)
8925 {
8926         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8927         struct nlattr *nest;
8928         int err;
8929         bool found = false;
8930         int i;
8931
8932         /* only process one nested attribute */
8933         nest = nla_data(nla);
8934         if (!nla_ok(nest, nla_len(nest)))
8935                 return -EINVAL;
8936
8937         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8938                                           nest, nl80211_bss_select_policy,
8939                                           NULL);
8940         if (err)
8941                 return err;
8942
8943         /* only one attribute may be given */
8944         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8945                 if (attr[i]) {
8946                         if (found)
8947                                 return -EINVAL;
8948                         found = true;
8949                 }
8950         }
8951
8952         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8953
8954         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8955                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8956
8957         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8958                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8959                 bss_select->param.band_pref =
8960                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8961                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8962                         return -EINVAL;
8963         }
8964
8965         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8966                 struct nl80211_bss_select_rssi_adjust *adj_param;
8967
8968                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8969                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8970                 bss_select->param.adjust.band = adj_param->band;
8971                 bss_select->param.adjust.delta = adj_param->delta;
8972                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8973                         return -EINVAL;
8974         }
8975
8976         /* user-space did not provide behaviour attribute */
8977         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8978                 return -EINVAL;
8979
8980         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8981                 return -EINVAL;
8982
8983         return 0;
8984 }
8985
8986 int nl80211_parse_random_mac(struct nlattr **attrs,
8987                              u8 *mac_addr, u8 *mac_addr_mask)
8988 {
8989         int i;
8990
8991         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8992                 eth_zero_addr(mac_addr);
8993                 eth_zero_addr(mac_addr_mask);
8994                 mac_addr[0] = 0x2;
8995                 mac_addr_mask[0] = 0x3;
8996
8997                 return 0;
8998         }
8999
9000         /* need both or none */
9001         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
9002                 return -EINVAL;
9003
9004         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
9005         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
9006
9007         /* don't allow or configure an mcast address */
9008         if (!is_multicast_ether_addr(mac_addr_mask) ||
9009             is_multicast_ether_addr(mac_addr))
9010                 return -EINVAL;
9011
9012         /*
9013          * allow users to pass a MAC address that has bits set outside
9014          * of the mask, but don't bother drivers with having to deal
9015          * with such bits
9016          */
9017         for (i = 0; i < ETH_ALEN; i++)
9018                 mac_addr[i] &= mac_addr_mask[i];
9019
9020         return 0;
9021 }
9022
9023 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
9024                                               struct ieee80211_channel *chan)
9025 {
9026         unsigned int link_id;
9027         bool all_ok = true;
9028
9029         lockdep_assert_wiphy(wdev->wiphy);
9030
9031         if (!cfg80211_beaconing_iface_active(wdev))
9032                 return true;
9033
9034         /*
9035          * FIXME: check if we have a free HW resource/link for chan
9036          *
9037          * This, as well as the FIXME below, requires knowing the link
9038          * capabilities of the hardware.
9039          */
9040
9041         /* we cannot leave radar channels */
9042         for_each_valid_link(wdev, link_id) {
9043                 struct cfg80211_chan_def *chandef;
9044
9045                 chandef = wdev_chandef(wdev, link_id);
9046                 if (!chandef || !chandef->chan)
9047                         continue;
9048
9049                 /*
9050                  * FIXME: don't require all_ok, but rather check only the
9051                  *        correct HW resource/link onto which 'chan' falls,
9052                  *        as only that link leaves the channel for doing
9053                  *        the off-channel operation.
9054                  */
9055
9056                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
9057                         all_ok = false;
9058         }
9059
9060         if (all_ok)
9061                 return true;
9062
9063         return regulatory_pre_cac_allowed(wdev->wiphy);
9064 }
9065
9066 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
9067                                     enum nl80211_ext_feature_index feat)
9068 {
9069         if (!(flags & flag))
9070                 return true;
9071         if (wiphy_ext_feature_isset(wiphy, feat))
9072                 return true;
9073         return false;
9074 }
9075
9076 static int
9077 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
9078                          void *request, struct nlattr **attrs,
9079                          bool is_sched_scan)
9080 {
9081         u8 *mac_addr, *mac_addr_mask;
9082         u32 *flags;
9083         enum nl80211_feature_flags randomness_flag;
9084
9085         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
9086                 return 0;
9087
9088         if (is_sched_scan) {
9089                 struct cfg80211_sched_scan_request *req = request;
9090
9091                 randomness_flag = wdev ?
9092                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
9093                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
9094                 flags = &req->flags;
9095                 mac_addr = req->mac_addr;
9096                 mac_addr_mask = req->mac_addr_mask;
9097         } else {
9098                 struct cfg80211_scan_request *req = request;
9099
9100                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
9101                 flags = &req->flags;
9102                 mac_addr = req->mac_addr;
9103                 mac_addr_mask = req->mac_addr_mask;
9104         }
9105
9106         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
9107
9108         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
9109              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
9110             !nl80211_check_scan_feat(wiphy, *flags,
9111                                      NL80211_SCAN_FLAG_LOW_SPAN,
9112                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
9113             !nl80211_check_scan_feat(wiphy, *flags,
9114                                      NL80211_SCAN_FLAG_LOW_POWER,
9115                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
9116             !nl80211_check_scan_feat(wiphy, *flags,
9117                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
9118                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
9119             !nl80211_check_scan_feat(wiphy, *flags,
9120                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
9121                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
9122             !nl80211_check_scan_feat(wiphy, *flags,
9123                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
9124                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
9125             !nl80211_check_scan_feat(wiphy, *flags,
9126                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
9127                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
9128             !nl80211_check_scan_feat(wiphy, *flags,
9129                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
9130                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
9131             !nl80211_check_scan_feat(wiphy, *flags,
9132                                      NL80211_SCAN_FLAG_RANDOM_SN,
9133                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
9134             !nl80211_check_scan_feat(wiphy, *flags,
9135                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
9136                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
9137                 return -EOPNOTSUPP;
9138
9139         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
9140                 int err;
9141
9142                 if (!(wiphy->features & randomness_flag) ||
9143                     (wdev && wdev->connected))
9144                         return -EOPNOTSUPP;
9145
9146                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
9147                 if (err)
9148                         return err;
9149         }
9150
9151         return 0;
9152 }
9153
9154 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
9155 {
9156         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9157         struct wireless_dev *wdev = info->user_ptr[1];
9158         struct cfg80211_scan_request *request;
9159         struct nlattr *scan_freqs = NULL;
9160         bool scan_freqs_khz = false;
9161         struct nlattr *attr;
9162         struct wiphy *wiphy;
9163         int err, tmp, n_ssids = 0, n_channels, i;
9164         size_t ie_len, size;
9165
9166         wiphy = &rdev->wiphy;
9167
9168         if (wdev->iftype == NL80211_IFTYPE_NAN)
9169                 return -EOPNOTSUPP;
9170
9171         if (!rdev->ops->scan)
9172                 return -EOPNOTSUPP;
9173
9174         if (rdev->scan_req || rdev->scan_msg)
9175                 return -EBUSY;
9176
9177         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
9178                 if (!wiphy_ext_feature_isset(wiphy,
9179                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
9180                         return -EOPNOTSUPP;
9181                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
9182                 scan_freqs_khz = true;
9183         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
9184                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
9185
9186         if (scan_freqs) {
9187                 n_channels = validate_scan_freqs(scan_freqs);
9188                 if (!n_channels)
9189                         return -EINVAL;
9190         } else {
9191                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9192         }
9193
9194         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
9195                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
9196                         n_ssids++;
9197
9198         if (n_ssids > wiphy->max_scan_ssids)
9199                 return -EINVAL;
9200
9201         if (info->attrs[NL80211_ATTR_IE])
9202                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9203         else
9204                 ie_len = 0;
9205
9206         if (ie_len > wiphy->max_scan_ie_len)
9207                 return -EINVAL;
9208
9209         size = struct_size(request, channels, n_channels);
9210         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9211         size = size_add(size, ie_len);
9212         request = kzalloc(size, GFP_KERNEL);
9213         if (!request)
9214                 return -ENOMEM;
9215
9216         if (n_ssids)
9217                 request->ssids = (void *)&request->channels[n_channels];
9218         request->n_ssids = n_ssids;
9219         if (ie_len) {
9220                 if (n_ssids)
9221                         request->ie = (void *)(request->ssids + n_ssids);
9222                 else
9223                         request->ie = (void *)(request->channels + n_channels);
9224         }
9225
9226         i = 0;
9227         if (scan_freqs) {
9228                 /* user specified, bail out if channel not found */
9229                 nla_for_each_nested(attr, scan_freqs, tmp) {
9230                         struct ieee80211_channel *chan;
9231                         int freq = nla_get_u32(attr);
9232
9233                         if (!scan_freqs_khz)
9234                                 freq = MHZ_TO_KHZ(freq);
9235
9236                         chan = ieee80211_get_channel_khz(wiphy, freq);
9237                         if (!chan) {
9238                                 err = -EINVAL;
9239                                 goto out_free;
9240                         }
9241
9242                         /* ignore disabled channels */
9243                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9244                                 continue;
9245
9246                         request->channels[i] = chan;
9247                         i++;
9248                 }
9249         } else {
9250                 enum nl80211_band band;
9251
9252                 /* all channels */
9253                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9254                         int j;
9255
9256                         if (!wiphy->bands[band])
9257                                 continue;
9258                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9259                                 struct ieee80211_channel *chan;
9260
9261                                 chan = &wiphy->bands[band]->channels[j];
9262
9263                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9264                                         continue;
9265
9266                                 request->channels[i] = chan;
9267                                 i++;
9268                         }
9269                 }
9270         }
9271
9272         if (!i) {
9273                 err = -EINVAL;
9274                 goto out_free;
9275         }
9276
9277         request->n_channels = i;
9278
9279         for (i = 0; i < request->n_channels; i++) {
9280                 struct ieee80211_channel *chan = request->channels[i];
9281
9282                 /* if we can go off-channel to the target channel we're good */
9283                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9284                         continue;
9285
9286                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9287                         err = -EBUSY;
9288                         goto out_free;
9289                 }
9290         }
9291
9292         i = 0;
9293         if (n_ssids) {
9294                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9295                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9296                                 err = -EINVAL;
9297                                 goto out_free;
9298                         }
9299                         request->ssids[i].ssid_len = nla_len(attr);
9300                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9301                         i++;
9302                 }
9303         }
9304
9305         if (info->attrs[NL80211_ATTR_IE]) {
9306                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9307                 memcpy((void *)request->ie,
9308                        nla_data(info->attrs[NL80211_ATTR_IE]),
9309                        request->ie_len);
9310         }
9311
9312         for (i = 0; i < NUM_NL80211_BANDS; i++)
9313                 if (wiphy->bands[i])
9314                         request->rates[i] =
9315                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
9316
9317         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9318                 nla_for_each_nested(attr,
9319                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9320                                     tmp) {
9321                         enum nl80211_band band = nla_type(attr);
9322
9323                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9324                                 err = -EINVAL;
9325                                 goto out_free;
9326                         }
9327
9328                         if (!wiphy->bands[band])
9329                                 continue;
9330
9331                         err = ieee80211_get_ratemask(wiphy->bands[band],
9332                                                      nla_data(attr),
9333                                                      nla_len(attr),
9334                                                      &request->rates[band]);
9335                         if (err)
9336                                 goto out_free;
9337                 }
9338         }
9339
9340         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9341                 request->duration =
9342                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9343                 request->duration_mandatory =
9344                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9345         }
9346
9347         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9348                                        false);
9349         if (err)
9350                 goto out_free;
9351
9352         request->no_cck =
9353                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9354
9355         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9356          * BSSID to scan for. This was problematic because that same attribute
9357          * was already used for another purpose (local random MAC address). The
9358          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9359          * compatibility with older userspace components, also use the
9360          * NL80211_ATTR_MAC value here if it can be determined to be used for
9361          * the specific BSSID use case instead of the random MAC address
9362          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9363          */
9364         if (info->attrs[NL80211_ATTR_BSSID])
9365                 memcpy(request->bssid,
9366                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9367         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9368                  info->attrs[NL80211_ATTR_MAC])
9369                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9370                        ETH_ALEN);
9371         else
9372                 eth_broadcast_addr(request->bssid);
9373
9374         request->tsf_report_link_id = nl80211_link_id_or_invalid(info->attrs);
9375         request->wdev = wdev;
9376         request->wiphy = &rdev->wiphy;
9377         request->scan_start = jiffies;
9378
9379         rdev->scan_req = request;
9380         err = cfg80211_scan(rdev);
9381
9382         if (err)
9383                 goto out_free;
9384
9385         nl80211_send_scan_start(rdev, wdev);
9386         dev_hold(wdev->netdev);
9387
9388         return 0;
9389
9390  out_free:
9391         rdev->scan_req = NULL;
9392         kfree(request);
9393
9394         return err;
9395 }
9396
9397 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9398 {
9399         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9400         struct wireless_dev *wdev = info->user_ptr[1];
9401
9402         if (!rdev->ops->abort_scan)
9403                 return -EOPNOTSUPP;
9404
9405         if (rdev->scan_msg)
9406                 return 0;
9407
9408         if (!rdev->scan_req)
9409                 return -ENOENT;
9410
9411         rdev_abort_scan(rdev, wdev);
9412         return 0;
9413 }
9414
9415 static int
9416 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9417                                struct cfg80211_sched_scan_request *request,
9418                                struct nlattr **attrs)
9419 {
9420         int tmp, err, i = 0;
9421         struct nlattr *attr;
9422
9423         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9424                 u32 interval;
9425
9426                 /*
9427                  * If scan plans are not specified,
9428                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9429                  * case one scan plan will be set with the specified scan
9430                  * interval and infinite number of iterations.
9431                  */
9432                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9433                 if (!interval)
9434                         return -EINVAL;
9435
9436                 request->scan_plans[0].interval =
9437                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9438                 if (!request->scan_plans[0].interval)
9439                         return -EINVAL;
9440
9441                 if (request->scan_plans[0].interval >
9442                     wiphy->max_sched_scan_plan_interval)
9443                         request->scan_plans[0].interval =
9444                                 wiphy->max_sched_scan_plan_interval;
9445
9446                 return 0;
9447         }
9448
9449         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9450                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9451
9452                 if (WARN_ON(i >= n_plans))
9453                         return -EINVAL;
9454
9455                 err = nla_parse_nested_deprecated(plan,
9456                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9457                                                   attr, nl80211_plan_policy,
9458                                                   NULL);
9459                 if (err)
9460                         return err;
9461
9462                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9463                         return -EINVAL;
9464
9465                 request->scan_plans[i].interval =
9466                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9467                 if (!request->scan_plans[i].interval ||
9468                     request->scan_plans[i].interval >
9469                     wiphy->max_sched_scan_plan_interval)
9470                         return -EINVAL;
9471
9472                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9473                         request->scan_plans[i].iterations =
9474                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9475                         if (!request->scan_plans[i].iterations ||
9476                             (request->scan_plans[i].iterations >
9477                              wiphy->max_sched_scan_plan_iterations))
9478                                 return -EINVAL;
9479                 } else if (i < n_plans - 1) {
9480                         /*
9481                          * All scan plans but the last one must specify
9482                          * a finite number of iterations
9483                          */
9484                         return -EINVAL;
9485                 }
9486
9487                 i++;
9488         }
9489
9490         /*
9491          * The last scan plan must not specify the number of
9492          * iterations, it is supposed to run infinitely
9493          */
9494         if (request->scan_plans[n_plans - 1].iterations)
9495                 return  -EINVAL;
9496
9497         return 0;
9498 }
9499
9500 static struct cfg80211_sched_scan_request *
9501 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9502                          struct nlattr **attrs, int max_match_sets)
9503 {
9504         struct cfg80211_sched_scan_request *request;
9505         struct nlattr *attr;
9506         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9507         enum nl80211_band band;
9508         size_t ie_len, size;
9509         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9510         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9511
9512         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9513                 n_channels = validate_scan_freqs(
9514                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9515                 if (!n_channels)
9516                         return ERR_PTR(-EINVAL);
9517         } else {
9518                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9519         }
9520
9521         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9522                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9523                                     tmp)
9524                         n_ssids++;
9525
9526         if (n_ssids > wiphy->max_sched_scan_ssids)
9527                 return ERR_PTR(-EINVAL);
9528
9529         /*
9530          * First, count the number of 'real' matchsets. Due to an issue with
9531          * the old implementation, matchsets containing only the RSSI attribute
9532          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9533          * RSSI for all matchsets, rather than their own matchset for reporting
9534          * all APs with a strong RSSI. This is needed to be compatible with
9535          * older userspace that treated a matchset with only the RSSI as the
9536          * global RSSI for all other matchsets - if there are other matchsets.
9537          */
9538         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9539                 nla_for_each_nested(attr,
9540                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9541                                     tmp) {
9542                         struct nlattr *rssi;
9543
9544                         err = nla_parse_nested_deprecated(tb,
9545                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9546                                                           attr,
9547                                                           nl80211_match_policy,
9548                                                           NULL);
9549                         if (err)
9550                                 return ERR_PTR(err);
9551
9552                         /* SSID and BSSID are mutually exclusive */
9553                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9554                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9555                                 return ERR_PTR(-EINVAL);
9556
9557                         /* add other standalone attributes here */
9558                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9559                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9560                                 n_match_sets++;
9561                                 continue;
9562                         }
9563                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9564                         if (rssi)
9565                                 default_match_rssi = nla_get_s32(rssi);
9566                 }
9567         }
9568
9569         /* However, if there's no other matchset, add the RSSI one */
9570         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9571                 n_match_sets = 1;
9572
9573         if (n_match_sets > max_match_sets)
9574                 return ERR_PTR(-EINVAL);
9575
9576         if (attrs[NL80211_ATTR_IE])
9577                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9578         else
9579                 ie_len = 0;
9580
9581         if (ie_len > wiphy->max_sched_scan_ie_len)
9582                 return ERR_PTR(-EINVAL);
9583
9584         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9585                 /*
9586                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9587                  * each scan plan already specifies its own interval
9588                  */
9589                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9590                         return ERR_PTR(-EINVAL);
9591
9592                 nla_for_each_nested(attr,
9593                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9594                         n_plans++;
9595         } else {
9596                 /*
9597                  * The scan interval attribute is kept for backward
9598                  * compatibility. If no scan plans are specified and sched scan
9599                  * interval is specified, one scan plan will be set with this
9600                  * scan interval and infinite number of iterations.
9601                  */
9602                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9603                         return ERR_PTR(-EINVAL);
9604
9605                 n_plans = 1;
9606         }
9607
9608         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9609                 return ERR_PTR(-EINVAL);
9610
9611         if (!wiphy_ext_feature_isset(
9612                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9613             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9614              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9615                 return ERR_PTR(-EINVAL);
9616
9617         size = struct_size(request, channels, n_channels);
9618         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9619         size = size_add(size, array_size(sizeof(*request->match_sets),
9620                                          n_match_sets));
9621         size = size_add(size, array_size(sizeof(*request->scan_plans),
9622                                          n_plans));
9623         size = size_add(size, ie_len);
9624         request = kzalloc(size, GFP_KERNEL);
9625         if (!request)
9626                 return ERR_PTR(-ENOMEM);
9627
9628         if (n_ssids)
9629                 request->ssids = (void *)&request->channels[n_channels];
9630         request->n_ssids = n_ssids;
9631         if (ie_len) {
9632                 if (n_ssids)
9633                         request->ie = (void *)(request->ssids + n_ssids);
9634                 else
9635                         request->ie = (void *)(request->channels + n_channels);
9636         }
9637
9638         if (n_match_sets) {
9639                 if (request->ie)
9640                         request->match_sets = (void *)(request->ie + ie_len);
9641                 else if (n_ssids)
9642                         request->match_sets =
9643                                 (void *)(request->ssids + n_ssids);
9644                 else
9645                         request->match_sets =
9646                                 (void *)(request->channels + n_channels);
9647         }
9648         request->n_match_sets = n_match_sets;
9649
9650         if (n_match_sets)
9651                 request->scan_plans = (void *)(request->match_sets +
9652                                                n_match_sets);
9653         else if (request->ie)
9654                 request->scan_plans = (void *)(request->ie + ie_len);
9655         else if (n_ssids)
9656                 request->scan_plans = (void *)(request->ssids + n_ssids);
9657         else
9658                 request->scan_plans = (void *)(request->channels + n_channels);
9659
9660         request->n_scan_plans = n_plans;
9661
9662         i = 0;
9663         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9664                 /* user specified, bail out if channel not found */
9665                 nla_for_each_nested(attr,
9666                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9667                                     tmp) {
9668                         struct ieee80211_channel *chan;
9669
9670                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9671
9672                         if (!chan) {
9673                                 err = -EINVAL;
9674                                 goto out_free;
9675                         }
9676
9677                         /* ignore disabled channels */
9678                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9679                                 continue;
9680
9681                         request->channels[i] = chan;
9682                         i++;
9683                 }
9684         } else {
9685                 /* all channels */
9686                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9687                         int j;
9688
9689                         if (!wiphy->bands[band])
9690                                 continue;
9691                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9692                                 struct ieee80211_channel *chan;
9693
9694                                 chan = &wiphy->bands[band]->channels[j];
9695
9696                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9697                                         continue;
9698
9699                                 request->channels[i] = chan;
9700                                 i++;
9701                         }
9702                 }
9703         }
9704
9705         if (!i) {
9706                 err = -EINVAL;
9707                 goto out_free;
9708         }
9709
9710         request->n_channels = i;
9711
9712         i = 0;
9713         if (n_ssids) {
9714                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9715                                     tmp) {
9716                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9717                                 err = -EINVAL;
9718                                 goto out_free;
9719                         }
9720                         request->ssids[i].ssid_len = nla_len(attr);
9721                         memcpy(request->ssids[i].ssid, nla_data(attr),
9722                                nla_len(attr));
9723                         i++;
9724                 }
9725         }
9726
9727         i = 0;
9728         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9729                 nla_for_each_nested(attr,
9730                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9731                                     tmp) {
9732                         struct nlattr *ssid, *bssid, *rssi;
9733
9734                         err = nla_parse_nested_deprecated(tb,
9735                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9736                                                           attr,
9737                                                           nl80211_match_policy,
9738                                                           NULL);
9739                         if (err)
9740                                 goto out_free;
9741                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9742                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9743
9744                         if (!ssid && !bssid) {
9745                                 i++;
9746                                 continue;
9747                         }
9748
9749                         if (WARN_ON(i >= n_match_sets)) {
9750                                 /* this indicates a programming error,
9751                                  * the loop above should have verified
9752                                  * things properly
9753                                  */
9754                                 err = -EINVAL;
9755                                 goto out_free;
9756                         }
9757
9758                         if (ssid) {
9759                                 memcpy(request->match_sets[i].ssid.ssid,
9760                                        nla_data(ssid), nla_len(ssid));
9761                                 request->match_sets[i].ssid.ssid_len =
9762                                         nla_len(ssid);
9763                         }
9764                         if (bssid)
9765                                 memcpy(request->match_sets[i].bssid,
9766                                        nla_data(bssid), ETH_ALEN);
9767
9768                         /* special attribute - old implementation w/a */
9769                         request->match_sets[i].rssi_thold = default_match_rssi;
9770                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9771                         if (rssi)
9772                                 request->match_sets[i].rssi_thold =
9773                                         nla_get_s32(rssi);
9774                         i++;
9775                 }
9776
9777                 /* there was no other matchset, so the RSSI one is alone */
9778                 if (i == 0 && n_match_sets)
9779                         request->match_sets[0].rssi_thold = default_match_rssi;
9780
9781                 request->min_rssi_thold = INT_MAX;
9782                 for (i = 0; i < n_match_sets; i++)
9783                         request->min_rssi_thold =
9784                                 min(request->match_sets[i].rssi_thold,
9785                                     request->min_rssi_thold);
9786         } else {
9787                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9788         }
9789
9790         if (ie_len) {
9791                 request->ie_len = ie_len;
9792                 memcpy((void *)request->ie,
9793                        nla_data(attrs[NL80211_ATTR_IE]),
9794                        request->ie_len);
9795         }
9796
9797         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9798         if (err)
9799                 goto out_free;
9800
9801         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9802                 request->delay =
9803                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9804
9805         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9806                 request->relative_rssi = nla_get_s8(
9807                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9808                 request->relative_rssi_set = true;
9809         }
9810
9811         if (request->relative_rssi_set &&
9812             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9813                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9814
9815                 rssi_adjust = nla_data(
9816                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9817                 request->rssi_adjust.band = rssi_adjust->band;
9818                 request->rssi_adjust.delta = rssi_adjust->delta;
9819                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9820                         err = -EINVAL;
9821                         goto out_free;
9822                 }
9823         }
9824
9825         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9826         if (err)
9827                 goto out_free;
9828
9829         request->scan_start = jiffies;
9830
9831         return request;
9832
9833 out_free:
9834         kfree(request);
9835         return ERR_PTR(err);
9836 }
9837
9838 static int nl80211_start_sched_scan(struct sk_buff *skb,
9839                                     struct genl_info *info)
9840 {
9841         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9842         struct net_device *dev = info->user_ptr[1];
9843         struct wireless_dev *wdev = dev->ieee80211_ptr;
9844         struct cfg80211_sched_scan_request *sched_scan_req;
9845         bool want_multi;
9846         int err;
9847
9848         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9849                 return -EOPNOTSUPP;
9850
9851         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9852         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9853         if (err)
9854                 return err;
9855
9856         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9857                                                   info->attrs,
9858                                                   rdev->wiphy.max_match_sets);
9859
9860         err = PTR_ERR_OR_ZERO(sched_scan_req);
9861         if (err)
9862                 goto out_err;
9863
9864         /* leave request id zero for legacy request
9865          * or if driver does not support multi-scheduled scan
9866          */
9867         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9868                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9869
9870         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9871         if (err)
9872                 goto out_free;
9873
9874         sched_scan_req->dev = dev;
9875         sched_scan_req->wiphy = &rdev->wiphy;
9876
9877         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9878                 sched_scan_req->owner_nlportid = info->snd_portid;
9879
9880         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9881
9882         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9883         return 0;
9884
9885 out_free:
9886         kfree(sched_scan_req);
9887 out_err:
9888         return err;
9889 }
9890
9891 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9892                                    struct genl_info *info)
9893 {
9894         struct cfg80211_sched_scan_request *req;
9895         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9896         u64 cookie;
9897
9898         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9899                 return -EOPNOTSUPP;
9900
9901         if (info->attrs[NL80211_ATTR_COOKIE]) {
9902                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9903                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9904         }
9905
9906         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9907                                      struct cfg80211_sched_scan_request,
9908                                      list);
9909         if (!req || req->reqid ||
9910             (req->owner_nlportid &&
9911              req->owner_nlportid != info->snd_portid))
9912                 return -ENOENT;
9913
9914         return cfg80211_stop_sched_scan_req(rdev, req, false);
9915 }
9916
9917 static int nl80211_start_radar_detection(struct sk_buff *skb,
9918                                          struct genl_info *info)
9919 {
9920         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9921         struct net_device *dev = info->user_ptr[1];
9922         struct wireless_dev *wdev = dev->ieee80211_ptr;
9923         struct wiphy *wiphy = wdev->wiphy;
9924         struct cfg80211_chan_def chandef;
9925         enum nl80211_dfs_regions dfs_region;
9926         unsigned int cac_time_ms;
9927         int err = -EINVAL;
9928
9929         flush_delayed_work(&rdev->dfs_update_channels_wk);
9930
9931         wiphy_lock(wiphy);
9932
9933         dfs_region = reg_get_dfs_region(wiphy);
9934         if (dfs_region == NL80211_DFS_UNSET)
9935                 goto unlock;
9936
9937         err = nl80211_parse_chandef(rdev, info, &chandef);
9938         if (err)
9939                 goto unlock;
9940
9941         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9942         if (err < 0)
9943                 goto unlock;
9944
9945         if (err == 0) {
9946                 err = -EINVAL;
9947                 goto unlock;
9948         }
9949
9950         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9951                 err = -EINVAL;
9952                 goto unlock;
9953         }
9954
9955         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9956                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9957                                                                 &chandef);
9958                 goto unlock;
9959         }
9960
9961         if (netif_carrier_ok(dev)) {
9962                 err = -EBUSY;
9963                 goto unlock;
9964         }
9965
9966         if (wdev->cac_started) {
9967                 err = -EBUSY;
9968                 goto unlock;
9969         }
9970
9971         /* CAC start is offloaded to HW and can't be started manually */
9972         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
9973                 err = -EOPNOTSUPP;
9974                 goto unlock;
9975         }
9976
9977         if (!rdev->ops->start_radar_detection) {
9978                 err = -EOPNOTSUPP;
9979                 goto unlock;
9980         }
9981
9982         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9983         if (WARN_ON(!cac_time_ms))
9984                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9985
9986         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9987         if (!err) {
9988                 wdev->links[0].ap.chandef = chandef;
9989                 wdev->cac_started = true;
9990                 wdev->cac_start_time = jiffies;
9991                 wdev->cac_time_ms = cac_time_ms;
9992         }
9993 unlock:
9994         wiphy_unlock(wiphy);
9995
9996         return err;
9997 }
9998
9999 static int nl80211_notify_radar_detection(struct sk_buff *skb,
10000                                           struct genl_info *info)
10001 {
10002         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10003         struct net_device *dev = info->user_ptr[1];
10004         struct wireless_dev *wdev = dev->ieee80211_ptr;
10005         struct wiphy *wiphy = wdev->wiphy;
10006         struct cfg80211_chan_def chandef;
10007         enum nl80211_dfs_regions dfs_region;
10008         int err;
10009
10010         dfs_region = reg_get_dfs_region(wiphy);
10011         if (dfs_region == NL80211_DFS_UNSET) {
10012                 GENL_SET_ERR_MSG(info,
10013                                  "DFS Region is not set. Unexpected Radar indication");
10014                 return -EINVAL;
10015         }
10016
10017         err = nl80211_parse_chandef(rdev, info, &chandef);
10018         if (err) {
10019                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
10020                 return err;
10021         }
10022
10023         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
10024         if (err < 0) {
10025                 GENL_SET_ERR_MSG(info, "chandef is invalid");
10026                 return err;
10027         }
10028
10029         if (err == 0) {
10030                 GENL_SET_ERR_MSG(info,
10031                                  "Unexpected Radar indication for chandef/iftype");
10032                 return -EINVAL;
10033         }
10034
10035         /* Do not process this notification if radar is already detected
10036          * by kernel on this channel, and return success.
10037          */
10038         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
10039                 return 0;
10040
10041         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
10042
10043         cfg80211_sched_dfs_chan_update(rdev);
10044
10045         rdev->radar_chandef = chandef;
10046
10047         /* Propagate this notification to other radios as well */
10048         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
10049
10050         return 0;
10051 }
10052
10053 static int nl80211_parse_counter_offsets(struct cfg80211_registered_device *rdev,
10054                                          const u8 *data, size_t datalen,
10055                                          int first_count, struct nlattr *attr,
10056                                          const u16 **offsets, unsigned int *n_offsets)
10057 {
10058         int i;
10059
10060         *n_offsets = 0;
10061
10062         if (!attr)
10063                 return 0;
10064
10065         if (!nla_len(attr) || (nla_len(attr) % sizeof(u16)))
10066                 return -EINVAL;
10067
10068         *n_offsets = nla_len(attr) / sizeof(u16);
10069         if (rdev->wiphy.max_num_csa_counters &&
10070             (*n_offsets > rdev->wiphy.max_num_csa_counters))
10071                 return -EINVAL;
10072
10073         *offsets = nla_data(attr);
10074
10075         /* sanity checks - counters should fit and be the same */
10076         for (i = 0; i < *n_offsets; i++) {
10077                 u16 offset = (*offsets)[i];
10078
10079                 if (offset >= datalen)
10080                         return -EINVAL;
10081
10082                 if (first_count != -1 && data[offset] != first_count)
10083                         return -EINVAL;
10084         }
10085
10086         return 0;
10087 }
10088
10089 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
10090 {
10091         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10092         unsigned int link_id = nl80211_link_id(info->attrs);
10093         struct net_device *dev = info->user_ptr[1];
10094         struct wireless_dev *wdev = dev->ieee80211_ptr;
10095         struct cfg80211_csa_settings params;
10096         struct nlattr **csa_attrs = NULL;
10097         int err;
10098         bool need_new_beacon = false;
10099         bool need_handle_dfs_flag = true;
10100         u32 cs_count;
10101
10102         if (!rdev->ops->channel_switch ||
10103             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
10104                 return -EOPNOTSUPP;
10105
10106         switch (dev->ieee80211_ptr->iftype) {
10107         case NL80211_IFTYPE_AP:
10108         case NL80211_IFTYPE_P2P_GO:
10109                 need_new_beacon = true;
10110                 /* For all modes except AP the handle_dfs flag needs to be
10111                  * supplied to tell the kernel that userspace will handle radar
10112                  * events when they happen. Otherwise a switch to a channel
10113                  * requiring DFS will be rejected.
10114                  */
10115                 need_handle_dfs_flag = false;
10116
10117                 /* useless if AP is not running */
10118                 if (!wdev->links[link_id].ap.beacon_interval)
10119                         return -ENOTCONN;
10120                 break;
10121         case NL80211_IFTYPE_ADHOC:
10122                 if (!wdev->u.ibss.ssid_len)
10123                         return -ENOTCONN;
10124                 break;
10125         case NL80211_IFTYPE_MESH_POINT:
10126                 if (!wdev->u.mesh.id_len)
10127                         return -ENOTCONN;
10128                 break;
10129         default:
10130                 return -EOPNOTSUPP;
10131         }
10132
10133         memset(&params, 0, sizeof(params));
10134         params.beacon_csa.ftm_responder = -1;
10135
10136         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10137             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
10138                 return -EINVAL;
10139
10140         /* only important for AP, IBSS and mesh create IEs internally */
10141         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
10142                 return -EINVAL;
10143
10144         /* Even though the attribute is u32, the specification says
10145          * u8, so let's make sure we don't overflow.
10146          */
10147         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
10148         if (cs_count > 255)
10149                 return -EINVAL;
10150
10151         params.count = cs_count;
10152
10153         if (!need_new_beacon)
10154                 goto skip_beacons;
10155
10156         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after,
10157                                    info->extack);
10158         if (err)
10159                 goto free;
10160
10161         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
10162                             GFP_KERNEL);
10163         if (!csa_attrs) {
10164                 err = -ENOMEM;
10165                 goto free;
10166         }
10167
10168         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
10169                                           info->attrs[NL80211_ATTR_CSA_IES],
10170                                           nl80211_policy, info->extack);
10171         if (err)
10172                 goto free;
10173
10174         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa,
10175                                    info->extack);
10176         if (err)
10177                 goto free;
10178
10179         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
10180                 err = -EINVAL;
10181                 goto free;
10182         }
10183
10184         err = nl80211_parse_counter_offsets(rdev, params.beacon_csa.tail,
10185                                             params.beacon_csa.tail_len,
10186                                             params.count,
10187                                             csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON],
10188                                             &params.counter_offsets_beacon,
10189                                             &params.n_counter_offsets_beacon);
10190         if (err)
10191                 goto free;
10192
10193         err = nl80211_parse_counter_offsets(rdev, params.beacon_csa.probe_resp,
10194                                             params.beacon_csa.probe_resp_len,
10195                                             params.count,
10196                                             csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP],
10197                                             &params.counter_offsets_presp,
10198                                             &params.n_counter_offsets_presp);
10199         if (err)
10200                 goto free;
10201
10202 skip_beacons:
10203         err = nl80211_parse_chandef(rdev, info, &params.chandef);
10204         if (err)
10205                 goto free;
10206
10207         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
10208                                            wdev->iftype)) {
10209                 err = -EINVAL;
10210                 goto free;
10211         }
10212
10213         err = cfg80211_chandef_dfs_required(wdev->wiphy,
10214                                             &params.chandef,
10215                                             wdev->iftype);
10216         if (err < 0)
10217                 goto free;
10218
10219         if (err > 0) {
10220                 params.radar_required = true;
10221                 if (need_handle_dfs_flag &&
10222                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10223                         err = -EINVAL;
10224                         goto free;
10225                 }
10226         }
10227
10228         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10229                 params.block_tx = true;
10230
10231         params.link_id = link_id;
10232         err = rdev_channel_switch(rdev, dev, &params);
10233
10234 free:
10235         kfree(params.beacon_after.mbssid_ies);
10236         kfree(params.beacon_csa.mbssid_ies);
10237         kfree(params.beacon_after.rnr_ies);
10238         kfree(params.beacon_csa.rnr_ies);
10239         kfree(csa_attrs);
10240         return err;
10241 }
10242
10243 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10244                             u32 seq, int flags,
10245                             struct cfg80211_registered_device *rdev,
10246                             struct wireless_dev *wdev,
10247                             struct cfg80211_internal_bss *intbss)
10248 {
10249         struct cfg80211_bss *res = &intbss->pub;
10250         const struct cfg80211_bss_ies *ies;
10251         unsigned int link_id;
10252         void *hdr;
10253         struct nlattr *bss;
10254
10255         lockdep_assert_wiphy(wdev->wiphy);
10256
10257         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10258                              NL80211_CMD_NEW_SCAN_RESULTS);
10259         if (!hdr)
10260                 return -1;
10261
10262         genl_dump_check_consistent(cb, hdr);
10263
10264         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10265                 goto nla_put_failure;
10266         if (wdev->netdev &&
10267             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10268                 goto nla_put_failure;
10269         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10270                               NL80211_ATTR_PAD))
10271                 goto nla_put_failure;
10272
10273         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10274         if (!bss)
10275                 goto nla_put_failure;
10276         if ((!is_zero_ether_addr(res->bssid) &&
10277              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10278                 goto nla_put_failure;
10279
10280         rcu_read_lock();
10281         /* indicate whether we have probe response data or not */
10282         if (rcu_access_pointer(res->proberesp_ies) &&
10283             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10284                 goto fail_unlock_rcu;
10285
10286         /* this pointer prefers to be pointed to probe response data
10287          * but is always valid
10288          */
10289         ies = rcu_dereference(res->ies);
10290         if (ies) {
10291                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10292                                       NL80211_BSS_PAD))
10293                         goto fail_unlock_rcu;
10294                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10295                                         ies->len, ies->data))
10296                         goto fail_unlock_rcu;
10297         }
10298
10299         /* and this pointer is always (unless driver didn't know) beacon data */
10300         ies = rcu_dereference(res->beacon_ies);
10301         if (ies && ies->from_beacon) {
10302                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10303                                       NL80211_BSS_PAD))
10304                         goto fail_unlock_rcu;
10305                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10306                                         ies->len, ies->data))
10307                         goto fail_unlock_rcu;
10308         }
10309         rcu_read_unlock();
10310
10311         if (res->beacon_interval &&
10312             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10313                 goto nla_put_failure;
10314         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10315             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10316             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10317                         res->channel->freq_offset) ||
10318             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10319                         jiffies_to_msecs(jiffies - intbss->ts)))
10320                 goto nla_put_failure;
10321
10322         if (intbss->parent_tsf &&
10323             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10324                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10325              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10326                      intbss->parent_bssid)))
10327                 goto nla_put_failure;
10328
10329         if (intbss->ts_boottime &&
10330             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10331                               intbss->ts_boottime, NL80211_BSS_PAD))
10332                 goto nla_put_failure;
10333
10334         if (!nl80211_put_signal(msg, intbss->pub.chains,
10335                                 intbss->pub.chain_signal,
10336                                 NL80211_BSS_CHAIN_SIGNAL))
10337                 goto nla_put_failure;
10338
10339         switch (rdev->wiphy.signal_type) {
10340         case CFG80211_SIGNAL_TYPE_MBM:
10341                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10342                         goto nla_put_failure;
10343                 break;
10344         case CFG80211_SIGNAL_TYPE_UNSPEC:
10345                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10346                         goto nla_put_failure;
10347                 break;
10348         default:
10349                 break;
10350         }
10351
10352         switch (wdev->iftype) {
10353         case NL80211_IFTYPE_P2P_CLIENT:
10354         case NL80211_IFTYPE_STATION:
10355                 for_each_valid_link(wdev, link_id) {
10356                         if (intbss == wdev->links[link_id].client.current_bss &&
10357                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10358                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10359                              (wdev->valid_links &&
10360                               (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10361                                           link_id) ||
10362                                nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10363                                        wdev->u.client.connected_addr)))))
10364                                 goto nla_put_failure;
10365                 }
10366                 break;
10367         case NL80211_IFTYPE_ADHOC:
10368                 if (intbss == wdev->u.ibss.current_bss &&
10369                     nla_put_u32(msg, NL80211_BSS_STATUS,
10370                                 NL80211_BSS_STATUS_IBSS_JOINED))
10371                         goto nla_put_failure;
10372                 break;
10373         default:
10374                 break;
10375         }
10376
10377         if (nla_put_u32(msg, NL80211_BSS_USE_FOR, res->use_for))
10378                 goto nla_put_failure;
10379
10380         if (res->cannot_use_reasons &&
10381             nla_put_u64_64bit(msg, NL80211_BSS_CANNOT_USE_REASONS,
10382                               res->cannot_use_reasons,
10383                               NL80211_BSS_PAD))
10384                 goto nla_put_failure;
10385
10386         nla_nest_end(msg, bss);
10387
10388         genlmsg_end(msg, hdr);
10389         return 0;
10390
10391  fail_unlock_rcu:
10392         rcu_read_unlock();
10393  nla_put_failure:
10394         genlmsg_cancel(msg, hdr);
10395         return -EMSGSIZE;
10396 }
10397
10398 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10399 {
10400         struct cfg80211_registered_device *rdev;
10401         struct cfg80211_internal_bss *scan;
10402         struct wireless_dev *wdev;
10403         struct nlattr **attrbuf;
10404         int start = cb->args[2], idx = 0;
10405         bool dump_include_use_data;
10406         int err;
10407
10408         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10409         if (!attrbuf)
10410                 return -ENOMEM;
10411
10412         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10413         if (err) {
10414                 kfree(attrbuf);
10415                 return err;
10416         }
10417         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10418         __acquire(&rdev->wiphy.mtx);
10419
10420         dump_include_use_data =
10421                 attrbuf[NL80211_ATTR_BSS_DUMP_INCLUDE_USE_DATA];
10422         kfree(attrbuf);
10423
10424         spin_lock_bh(&rdev->bss_lock);
10425
10426         /*
10427          * dump_scan will be called multiple times to break up the scan results
10428          * into multiple messages.  It is unlikely that any more bss-es will be
10429          * expired after the first call, so only call only call this on the
10430          * first dump_scan invocation.
10431          */
10432         if (start == 0)
10433                 cfg80211_bss_expire(rdev);
10434
10435         cb->seq = rdev->bss_generation;
10436
10437         list_for_each_entry(scan, &rdev->bss_list, list) {
10438                 if (++idx <= start)
10439                         continue;
10440                 if (!dump_include_use_data &&
10441                     !(scan->pub.use_for & NL80211_BSS_USE_FOR_NORMAL))
10442                         continue;
10443                 if (nl80211_send_bss(skb, cb,
10444                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10445                                 rdev, wdev, scan) < 0) {
10446                         idx--;
10447                         break;
10448                 }
10449         }
10450
10451         spin_unlock_bh(&rdev->bss_lock);
10452
10453         cb->args[2] = idx;
10454         wiphy_unlock(&rdev->wiphy);
10455
10456         return skb->len;
10457 }
10458
10459 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10460                                int flags, struct net_device *dev,
10461                                bool allow_radio_stats,
10462                                struct survey_info *survey)
10463 {
10464         void *hdr;
10465         struct nlattr *infoattr;
10466
10467         /* skip radio stats if userspace didn't request them */
10468         if (!survey->channel && !allow_radio_stats)
10469                 return 0;
10470
10471         hdr = nl80211hdr_put(msg, portid, seq, flags,
10472                              NL80211_CMD_NEW_SURVEY_RESULTS);
10473         if (!hdr)
10474                 return -ENOMEM;
10475
10476         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10477                 goto nla_put_failure;
10478
10479         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10480         if (!infoattr)
10481                 goto nla_put_failure;
10482
10483         if (survey->channel &&
10484             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10485                         survey->channel->center_freq))
10486                 goto nla_put_failure;
10487
10488         if (survey->channel && survey->channel->freq_offset &&
10489             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10490                         survey->channel->freq_offset))
10491                 goto nla_put_failure;
10492
10493         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10494             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10495                 goto nla_put_failure;
10496         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10497             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10498                 goto nla_put_failure;
10499         if ((survey->filled & SURVEY_INFO_TIME) &&
10500             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10501                         survey->time, NL80211_SURVEY_INFO_PAD))
10502                 goto nla_put_failure;
10503         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10504             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10505                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10506                 goto nla_put_failure;
10507         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10508             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10509                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10510                 goto nla_put_failure;
10511         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10512             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10513                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10514                 goto nla_put_failure;
10515         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10516             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10517                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10518                 goto nla_put_failure;
10519         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10520             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10521                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10522                 goto nla_put_failure;
10523         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10524             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10525                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10526                 goto nla_put_failure;
10527
10528         nla_nest_end(msg, infoattr);
10529
10530         genlmsg_end(msg, hdr);
10531         return 0;
10532
10533  nla_put_failure:
10534         genlmsg_cancel(msg, hdr);
10535         return -EMSGSIZE;
10536 }
10537
10538 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10539 {
10540         struct nlattr **attrbuf;
10541         struct survey_info survey;
10542         struct cfg80211_registered_device *rdev;
10543         struct wireless_dev *wdev;
10544         int survey_idx = cb->args[2];
10545         int res;
10546         bool radio_stats;
10547
10548         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10549         if (!attrbuf)
10550                 return -ENOMEM;
10551
10552         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10553         if (res) {
10554                 kfree(attrbuf);
10555                 return res;
10556         }
10557         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10558         __acquire(&rdev->wiphy.mtx);
10559
10560         /* prepare_wdev_dump parsed the attributes */
10561         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10562
10563         if (!wdev->netdev) {
10564                 res = -EINVAL;
10565                 goto out_err;
10566         }
10567
10568         if (!rdev->ops->dump_survey) {
10569                 res = -EOPNOTSUPP;
10570                 goto out_err;
10571         }
10572
10573         while (1) {
10574                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10575                 if (res == -ENOENT)
10576                         break;
10577                 if (res)
10578                         goto out_err;
10579
10580                 /* don't send disabled channels, but do send non-channel data */
10581                 if (survey.channel &&
10582                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10583                         survey_idx++;
10584                         continue;
10585                 }
10586
10587                 if (nl80211_send_survey(skb,
10588                                 NETLINK_CB(cb->skb).portid,
10589                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10590                                 wdev->netdev, radio_stats, &survey) < 0)
10591                         goto out;
10592                 survey_idx++;
10593         }
10594
10595  out:
10596         cb->args[2] = survey_idx;
10597         res = skb->len;
10598  out_err:
10599         kfree(attrbuf);
10600         wiphy_unlock(&rdev->wiphy);
10601         return res;
10602 }
10603
10604 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10605 {
10606         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10607         struct net_device *dev = info->user_ptr[1];
10608         struct ieee80211_channel *chan;
10609         const u8 *bssid, *ssid;
10610         int err, ssid_len;
10611         enum nl80211_auth_type auth_type;
10612         struct key_parse key;
10613         bool local_state_change;
10614         struct cfg80211_auth_request req = {};
10615         u32 freq;
10616
10617         if (!info->attrs[NL80211_ATTR_MAC])
10618                 return -EINVAL;
10619
10620         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10621                 return -EINVAL;
10622
10623         if (!info->attrs[NL80211_ATTR_SSID])
10624                 return -EINVAL;
10625
10626         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10627                 return -EINVAL;
10628
10629         err = nl80211_parse_key(info, &key);
10630         if (err)
10631                 return err;
10632
10633         if (key.idx >= 0) {
10634                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10635                         return -EINVAL;
10636                 if (!key.p.key || !key.p.key_len)
10637                         return -EINVAL;
10638                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10639                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10640                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10641                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10642                         return -EINVAL;
10643                 if (key.idx > 3)
10644                         return -EINVAL;
10645         } else {
10646                 key.p.key_len = 0;
10647                 key.p.key = NULL;
10648         }
10649
10650         if (key.idx >= 0) {
10651                 int i;
10652                 bool ok = false;
10653
10654                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10655                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10656                                 ok = true;
10657                                 break;
10658                         }
10659                 }
10660                 if (!ok)
10661                         return -EINVAL;
10662         }
10663
10664         if (!rdev->ops->auth)
10665                 return -EOPNOTSUPP;
10666
10667         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10668             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10669                 return -EOPNOTSUPP;
10670
10671         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10672         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10673         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10674                 freq +=
10675                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10676
10677         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10678         if (!chan)
10679                 return -EINVAL;
10680
10681         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10682         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10683
10684         if (info->attrs[NL80211_ATTR_IE]) {
10685                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10686                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10687         }
10688
10689         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10690         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10691                 return -EINVAL;
10692
10693         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10694              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10695              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10696              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10697             !info->attrs[NL80211_ATTR_AUTH_DATA])
10698                 return -EINVAL;
10699
10700         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10701                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10702                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10703                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10704                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10705                         return -EINVAL;
10706                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10707                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10708         }
10709
10710         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10711
10712         /*
10713          * Since we no longer track auth state, ignore
10714          * requests to only change local state.
10715          */
10716         if (local_state_change)
10717                 return 0;
10718
10719         req.auth_type = auth_type;
10720         req.key = key.p.key;
10721         req.key_len = key.p.key_len;
10722         req.key_idx = key.idx;
10723         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10724         if (req.link_id >= 0) {
10725                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10726                         return -EINVAL;
10727                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10728                         return -EINVAL;
10729                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10730                 if (!is_valid_ether_addr(req.ap_mld_addr))
10731                         return -EINVAL;
10732         }
10733
10734         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10735                                    IEEE80211_BSS_TYPE_ESS,
10736                                    IEEE80211_PRIVACY_ANY);
10737         if (!req.bss)
10738                 return -ENOENT;
10739
10740         err = cfg80211_mlme_auth(rdev, dev, &req);
10741
10742         cfg80211_put_bss(&rdev->wiphy, req.bss);
10743
10744         return err;
10745 }
10746
10747 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10748                                      struct genl_info *info)
10749 {
10750         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10751                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10752                 return -EINVAL;
10753         }
10754
10755         if (!rdev->ops->tx_control_port ||
10756             !wiphy_ext_feature_isset(&rdev->wiphy,
10757                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10758                 return -EOPNOTSUPP;
10759
10760         return 0;
10761 }
10762
10763 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10764                                    struct genl_info *info,
10765                                    struct cfg80211_crypto_settings *settings,
10766                                    int cipher_limit)
10767 {
10768         memset(settings, 0, sizeof(*settings));
10769
10770         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10771
10772         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10773                 u16 proto;
10774
10775                 proto = nla_get_u16(
10776                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10777                 settings->control_port_ethertype = cpu_to_be16(proto);
10778                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10779                     proto != ETH_P_PAE)
10780                         return -EINVAL;
10781                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10782                         settings->control_port_no_encrypt = true;
10783         } else
10784                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10785
10786         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10787                 int r = validate_pae_over_nl80211(rdev, info);
10788
10789                 if (r < 0)
10790                         return r;
10791
10792                 settings->control_port_over_nl80211 = true;
10793
10794                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10795                         settings->control_port_no_preauth = true;
10796         }
10797
10798         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10799                 void *data;
10800                 int len, i;
10801
10802                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10803                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10804                 settings->n_ciphers_pairwise = len / sizeof(u32);
10805
10806                 if (len % sizeof(u32))
10807                         return -EINVAL;
10808
10809                 if (settings->n_ciphers_pairwise > cipher_limit)
10810                         return -EINVAL;
10811
10812                 memcpy(settings->ciphers_pairwise, data, len);
10813
10814                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10815                         if (!cfg80211_supported_cipher_suite(
10816                                         &rdev->wiphy,
10817                                         settings->ciphers_pairwise[i]))
10818                                 return -EINVAL;
10819         }
10820
10821         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10822                 settings->cipher_group =
10823                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10824                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10825                                                      settings->cipher_group))
10826                         return -EINVAL;
10827         }
10828
10829         if (info->attrs[NL80211_ATTR_WPA_VERSIONS])
10830                 settings->wpa_versions =
10831                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10832
10833         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10834                 void *data;
10835                 int len;
10836
10837                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10838                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10839                 settings->n_akm_suites = len / sizeof(u32);
10840
10841                 if (len % sizeof(u32))
10842                         return -EINVAL;
10843
10844                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10845                         return -EINVAL;
10846
10847                 memcpy(settings->akm_suites, data, len);
10848         }
10849
10850         if (info->attrs[NL80211_ATTR_PMK]) {
10851                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10852                         return -EINVAL;
10853                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10854                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10855                     !wiphy_ext_feature_isset(&rdev->wiphy,
10856                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10857                         return -EINVAL;
10858                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10859         }
10860
10861         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10862                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10863                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10864                     !wiphy_ext_feature_isset(&rdev->wiphy,
10865                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10866                         return -EINVAL;
10867                 settings->sae_pwd =
10868                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10869                 settings->sae_pwd_len =
10870                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10871         }
10872
10873         if (info->attrs[NL80211_ATTR_SAE_PWE])
10874                 settings->sae_pwe =
10875                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10876         else
10877                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10878
10879         return 0;
10880 }
10881
10882 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10883                                               const u8 *ssid, int ssid_len,
10884                                               struct nlattr **attrs,
10885                                               int assoc_link_id, int link_id)
10886 {
10887         struct ieee80211_channel *chan;
10888         struct cfg80211_bss *bss;
10889         const u8 *bssid;
10890         u32 freq, use_for = 0;
10891
10892         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10893                 return ERR_PTR(-EINVAL);
10894
10895         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10896
10897         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10898         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10899                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10900
10901         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10902         if (!chan)
10903                 return ERR_PTR(-EINVAL);
10904
10905         if (assoc_link_id >= 0)
10906                 use_for = NL80211_BSS_USE_FOR_MLD_LINK;
10907         if (assoc_link_id == link_id)
10908                 use_for |= NL80211_BSS_USE_FOR_NORMAL;
10909
10910         bss = __cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10911                                  ssid, ssid_len,
10912                                  IEEE80211_BSS_TYPE_ESS,
10913                                  IEEE80211_PRIVACY_ANY,
10914                                  use_for);
10915         if (!bss)
10916                 return ERR_PTR(-ENOENT);
10917
10918         return bss;
10919 }
10920
10921 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10922 {
10923         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10924         struct net_device *dev = info->user_ptr[1];
10925         struct cfg80211_assoc_request req = {};
10926         struct nlattr **attrs = NULL;
10927         const u8 *ap_addr, *ssid;
10928         unsigned int link_id;
10929         int err, ssid_len;
10930
10931         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10932             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10933                 return -EPERM;
10934
10935         if (!info->attrs[NL80211_ATTR_SSID])
10936                 return -EINVAL;
10937
10938         if (!rdev->ops->assoc)
10939                 return -EOPNOTSUPP;
10940
10941         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10942             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10943                 return -EOPNOTSUPP;
10944
10945         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10946         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10947
10948         if (info->attrs[NL80211_ATTR_IE]) {
10949                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10950                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10951
10952                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10953                                            req.ie, req.ie_len)) {
10954                         NL_SET_ERR_MSG_ATTR(info->extack,
10955                                             info->attrs[NL80211_ATTR_IE],
10956                                             "non-inheritance makes no sense");
10957                         return -EINVAL;
10958                 }
10959         }
10960
10961         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10962                 enum nl80211_mfp mfp =
10963                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10964                 if (mfp == NL80211_MFP_REQUIRED)
10965                         req.use_mfp = true;
10966                 else if (mfp != NL80211_MFP_NO)
10967                         return -EINVAL;
10968         }
10969
10970         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10971                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10972
10973         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10974                 req.flags |= ASSOC_REQ_DISABLE_HT;
10975
10976         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10977                 memcpy(&req.ht_capa_mask,
10978                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10979                        sizeof(req.ht_capa_mask));
10980
10981         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10982                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10983                         return -EINVAL;
10984                 memcpy(&req.ht_capa,
10985                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10986                        sizeof(req.ht_capa));
10987         }
10988
10989         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10990                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10991
10992         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10993                 req.flags |= ASSOC_REQ_DISABLE_HE;
10994
10995         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
10996                 req.flags |= ASSOC_REQ_DISABLE_EHT;
10997
10998         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10999                 memcpy(&req.vht_capa_mask,
11000                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11001                        sizeof(req.vht_capa_mask));
11002
11003         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11004                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11005                         return -EINVAL;
11006                 memcpy(&req.vht_capa,
11007                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11008                        sizeof(req.vht_capa));
11009         }
11010
11011         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11012                 if (!((rdev->wiphy.features &
11013                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11014                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11015                     !wiphy_ext_feature_isset(&rdev->wiphy,
11016                                              NL80211_EXT_FEATURE_RRM))
11017                         return -EINVAL;
11018                 req.flags |= ASSOC_REQ_USE_RRM;
11019         }
11020
11021         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
11022                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
11023                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
11024                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
11025                         return -EINVAL;
11026                 req.fils_nonces =
11027                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
11028         }
11029
11030         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
11031                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
11032                         return -EINVAL;
11033                 memcpy(&req.s1g_capa_mask,
11034                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
11035                        sizeof(req.s1g_capa_mask));
11036         }
11037
11038         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
11039                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
11040                         return -EINVAL;
11041                 memcpy(&req.s1g_capa,
11042                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
11043                        sizeof(req.s1g_capa));
11044         }
11045
11046         if (nla_get_flag(info->attrs[NL80211_ATTR_ASSOC_SPP_AMSDU])) {
11047                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11048                                              NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT)) {
11049                         GENL_SET_ERR_MSG(info, "SPP A-MSDUs not supported");
11050                         return -EINVAL;
11051                 }
11052                 req.flags |= ASSOC_REQ_SPP_AMSDU;
11053         }
11054
11055         req.link_id = nl80211_link_id_or_invalid(info->attrs);
11056
11057         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11058                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
11059                 struct nlattr *link;
11060                 int rem = 0;
11061
11062                 if (req.link_id < 0)
11063                         return -EINVAL;
11064
11065                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
11066                         return -EINVAL;
11067
11068                 if (info->attrs[NL80211_ATTR_MAC] ||
11069                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11070                     !info->attrs[NL80211_ATTR_MLD_ADDR])
11071                         return -EINVAL;
11072
11073                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
11074                 ap_addr = req.ap_mld_addr;
11075
11076                 attrs = kzalloc(attrsize, GFP_KERNEL);
11077                 if (!attrs)
11078                         return -ENOMEM;
11079
11080                 nla_for_each_nested(link,
11081                                     info->attrs[NL80211_ATTR_MLO_LINKS],
11082                                     rem) {
11083                         memset(attrs, 0, attrsize);
11084
11085                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
11086                                          link, NULL, NULL);
11087
11088                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
11089                                 err = -EINVAL;
11090                                 NL_SET_BAD_ATTR(info->extack, link);
11091                                 goto free;
11092                         }
11093
11094                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
11095                         /* cannot use the same link ID again */
11096                         if (req.links[link_id].bss) {
11097                                 err = -EINVAL;
11098                                 NL_SET_BAD_ATTR(info->extack, link);
11099                                 goto free;
11100                         }
11101                         req.links[link_id].bss =
11102                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs,
11103                                                   req.link_id, link_id);
11104                         if (IS_ERR(req.links[link_id].bss)) {
11105                                 err = PTR_ERR(req.links[link_id].bss);
11106                                 req.links[link_id].bss = NULL;
11107                                 NL_SET_ERR_MSG_ATTR(info->extack,
11108                                                     link, "Error fetching BSS for link");
11109                                 goto free;
11110                         }
11111
11112                         if (attrs[NL80211_ATTR_IE]) {
11113                                 req.links[link_id].elems =
11114                                         nla_data(attrs[NL80211_ATTR_IE]);
11115                                 req.links[link_id].elems_len =
11116                                         nla_len(attrs[NL80211_ATTR_IE]);
11117
11118                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
11119                                                        req.links[link_id].elems,
11120                                                        req.links[link_id].elems_len)) {
11121                                         NL_SET_ERR_MSG_ATTR(info->extack,
11122                                                             attrs[NL80211_ATTR_IE],
11123                                                             "cannot deal with fragmentation");
11124                                         err = -EINVAL;
11125                                         goto free;
11126                                 }
11127
11128                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11129                                                            req.links[link_id].elems,
11130                                                            req.links[link_id].elems_len)) {
11131                                         NL_SET_ERR_MSG_ATTR(info->extack,
11132                                                             attrs[NL80211_ATTR_IE],
11133                                                             "cannot deal with non-inheritance");
11134                                         err = -EINVAL;
11135                                         goto free;
11136                                 }
11137                         }
11138
11139                         req.links[link_id].disabled =
11140                                 nla_get_flag(attrs[NL80211_ATTR_MLO_LINK_DISABLED]);
11141                 }
11142
11143                 if (!req.links[req.link_id].bss) {
11144                         err = -EINVAL;
11145                         goto free;
11146                 }
11147
11148                 if (req.links[req.link_id].elems_len) {
11149                         GENL_SET_ERR_MSG(info,
11150                                          "cannot have per-link elems on assoc link");
11151                         err = -EINVAL;
11152                         goto free;
11153                 }
11154
11155                 if (req.links[req.link_id].disabled) {
11156                         GENL_SET_ERR_MSG(info,
11157                                          "cannot have assoc link disabled");
11158                         err = -EINVAL;
11159                         goto free;
11160                 }
11161
11162                 kfree(attrs);
11163                 attrs = NULL;
11164         } else {
11165                 if (req.link_id >= 0)
11166                         return -EINVAL;
11167
11168                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs,
11169                                             -1, -1);
11170                 if (IS_ERR(req.bss))
11171                         return PTR_ERR(req.bss);
11172                 ap_addr = req.bss->bssid;
11173         }
11174
11175         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
11176         if (!err) {
11177                 struct nlattr *link;
11178                 int rem = 0;
11179
11180                 err = cfg80211_mlme_assoc(rdev, dev, &req,
11181                                           info->extack);
11182
11183                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11184                         dev->ieee80211_ptr->conn_owner_nlportid =
11185                                 info->snd_portid;
11186                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11187                                ap_addr, ETH_ALEN);
11188                 }
11189
11190                 /* Report error from first problematic link */
11191                 if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11192                         nla_for_each_nested(link,
11193                                             info->attrs[NL80211_ATTR_MLO_LINKS],
11194                                             rem) {
11195                                 struct nlattr *link_id_attr =
11196                                         nla_find_nested(link, NL80211_ATTR_MLO_LINK_ID);
11197
11198                                 if (!link_id_attr)
11199                                         continue;
11200
11201                                 link_id = nla_get_u8(link_id_attr);
11202
11203                                 if (link_id == req.link_id)
11204                                         continue;
11205
11206                                 if (!req.links[link_id].error ||
11207                                     WARN_ON(req.links[link_id].error > 0))
11208                                         continue;
11209
11210                                 WARN_ON(err >= 0);
11211
11212                                 NL_SET_BAD_ATTR(info->extack, link);
11213                                 err = req.links[link_id].error;
11214                                 break;
11215                         }
11216                 }
11217         }
11218
11219 free:
11220         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
11221                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
11222         cfg80211_put_bss(&rdev->wiphy, req.bss);
11223         kfree(attrs);
11224
11225         return err;
11226 }
11227
11228 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
11229 {
11230         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11231         struct net_device *dev = info->user_ptr[1];
11232         const u8 *ie = NULL, *bssid;
11233         int ie_len = 0;
11234         u16 reason_code;
11235         bool local_state_change;
11236
11237         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11238             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11239                 return -EPERM;
11240
11241         if (!info->attrs[NL80211_ATTR_MAC])
11242                 return -EINVAL;
11243
11244         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11245                 return -EINVAL;
11246
11247         if (!rdev->ops->deauth)
11248                 return -EOPNOTSUPP;
11249
11250         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11251             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11252                 return -EOPNOTSUPP;
11253
11254         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11255
11256         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11257         if (reason_code == 0) {
11258                 /* Reason Code 0 is reserved */
11259                 return -EINVAL;
11260         }
11261
11262         if (info->attrs[NL80211_ATTR_IE]) {
11263                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11264                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11265         }
11266
11267         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11268
11269         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11270                                     local_state_change);
11271 }
11272
11273 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11274 {
11275         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11276         struct net_device *dev = info->user_ptr[1];
11277         const u8 *ie = NULL, *bssid;
11278         int ie_len = 0;
11279         u16 reason_code;
11280         bool local_state_change;
11281
11282         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11283             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11284                 return -EPERM;
11285
11286         if (!info->attrs[NL80211_ATTR_MAC])
11287                 return -EINVAL;
11288
11289         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11290                 return -EINVAL;
11291
11292         if (!rdev->ops->disassoc)
11293                 return -EOPNOTSUPP;
11294
11295         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11296             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11297                 return -EOPNOTSUPP;
11298
11299         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11300
11301         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11302         if (reason_code == 0) {
11303                 /* Reason Code 0 is reserved */
11304                 return -EINVAL;
11305         }
11306
11307         if (info->attrs[NL80211_ATTR_IE]) {
11308                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11309                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11310         }
11311
11312         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11313
11314         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11315                                       local_state_change);
11316 }
11317
11318 static bool
11319 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11320                          int mcast_rate[NUM_NL80211_BANDS],
11321                          int rateval)
11322 {
11323         struct wiphy *wiphy = &rdev->wiphy;
11324         bool found = false;
11325         int band, i;
11326
11327         for (band = 0; band < NUM_NL80211_BANDS; band++) {
11328                 struct ieee80211_supported_band *sband;
11329
11330                 sband = wiphy->bands[band];
11331                 if (!sband)
11332                         continue;
11333
11334                 for (i = 0; i < sband->n_bitrates; i++) {
11335                         if (sband->bitrates[i].bitrate == rateval) {
11336                                 mcast_rate[band] = i + 1;
11337                                 found = true;
11338                                 break;
11339                         }
11340                 }
11341         }
11342
11343         return found;
11344 }
11345
11346 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11347 {
11348         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11349         struct net_device *dev = info->user_ptr[1];
11350         struct cfg80211_ibss_params ibss;
11351         struct wiphy *wiphy;
11352         struct cfg80211_cached_keys *connkeys = NULL;
11353         int err;
11354
11355         memset(&ibss, 0, sizeof(ibss));
11356
11357         if (!info->attrs[NL80211_ATTR_SSID] ||
11358             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11359                 return -EINVAL;
11360
11361         ibss.beacon_interval = 100;
11362
11363         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11364                 ibss.beacon_interval =
11365                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11366
11367         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11368                                            ibss.beacon_interval);
11369         if (err)
11370                 return err;
11371
11372         if (!rdev->ops->join_ibss)
11373                 return -EOPNOTSUPP;
11374
11375         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11376                 return -EOPNOTSUPP;
11377
11378         wiphy = &rdev->wiphy;
11379
11380         if (info->attrs[NL80211_ATTR_MAC]) {
11381                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11382
11383                 if (!is_valid_ether_addr(ibss.bssid))
11384                         return -EINVAL;
11385         }
11386         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11387         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11388
11389         if (info->attrs[NL80211_ATTR_IE]) {
11390                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11391                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11392         }
11393
11394         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11395         if (err)
11396                 return err;
11397
11398         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11399                                      NL80211_IFTYPE_ADHOC))
11400                 return -EINVAL;
11401
11402         switch (ibss.chandef.width) {
11403         case NL80211_CHAN_WIDTH_5:
11404         case NL80211_CHAN_WIDTH_10:
11405         case NL80211_CHAN_WIDTH_20_NOHT:
11406                 break;
11407         case NL80211_CHAN_WIDTH_20:
11408         case NL80211_CHAN_WIDTH_40:
11409                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11410                         return -EINVAL;
11411                 break;
11412         case NL80211_CHAN_WIDTH_80:
11413         case NL80211_CHAN_WIDTH_80P80:
11414         case NL80211_CHAN_WIDTH_160:
11415                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11416                         return -EINVAL;
11417                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11418                                              NL80211_EXT_FEATURE_VHT_IBSS))
11419                         return -EINVAL;
11420                 break;
11421         case NL80211_CHAN_WIDTH_320:
11422                 return -EINVAL;
11423         default:
11424                 return -EINVAL;
11425         }
11426
11427         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11428         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11429
11430         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11431                 u8 *rates =
11432                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11433                 int n_rates =
11434                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11435                 struct ieee80211_supported_band *sband =
11436                         wiphy->bands[ibss.chandef.chan->band];
11437
11438                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11439                                              &ibss.basic_rates);
11440                 if (err)
11441                         return err;
11442         }
11443
11444         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11445                 memcpy(&ibss.ht_capa_mask,
11446                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11447                        sizeof(ibss.ht_capa_mask));
11448
11449         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11450                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11451                         return -EINVAL;
11452                 memcpy(&ibss.ht_capa,
11453                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11454                        sizeof(ibss.ht_capa));
11455         }
11456
11457         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11458             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11459                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11460                 return -EINVAL;
11461
11462         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11463                 bool no_ht = false;
11464
11465                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11466                 if (IS_ERR(connkeys))
11467                         return PTR_ERR(connkeys);
11468
11469                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11470                     no_ht) {
11471                         kfree_sensitive(connkeys);
11472                         return -EINVAL;
11473                 }
11474         }
11475
11476         ibss.control_port =
11477                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11478
11479         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11480                 int r = validate_pae_over_nl80211(rdev, info);
11481
11482                 if (r < 0) {
11483                         kfree_sensitive(connkeys);
11484                         return r;
11485                 }
11486
11487                 ibss.control_port_over_nl80211 = true;
11488         }
11489
11490         ibss.userspace_handles_dfs =
11491                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11492
11493         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11494         if (err)
11495                 kfree_sensitive(connkeys);
11496         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11497                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11498
11499         return err;
11500 }
11501
11502 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11503 {
11504         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11505         struct net_device *dev = info->user_ptr[1];
11506
11507         if (!rdev->ops->leave_ibss)
11508                 return -EOPNOTSUPP;
11509
11510         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11511                 return -EOPNOTSUPP;
11512
11513         return cfg80211_leave_ibss(rdev, dev, false);
11514 }
11515
11516 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11517 {
11518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11519         struct net_device *dev = info->user_ptr[1];
11520         int mcast_rate[NUM_NL80211_BANDS];
11521         u32 nla_rate;
11522
11523         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11524             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11525             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11526                 return -EOPNOTSUPP;
11527
11528         if (!rdev->ops->set_mcast_rate)
11529                 return -EOPNOTSUPP;
11530
11531         memset(mcast_rate, 0, sizeof(mcast_rate));
11532
11533         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11534                 return -EINVAL;
11535
11536         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11537         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11538                 return -EINVAL;
11539
11540         return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11541 }
11542
11543 static struct sk_buff *
11544 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11545                             struct wireless_dev *wdev, int approxlen,
11546                             u32 portid, u32 seq, enum nl80211_commands cmd,
11547                             enum nl80211_attrs attr,
11548                             const struct nl80211_vendor_cmd_info *info,
11549                             gfp_t gfp)
11550 {
11551         struct sk_buff *skb;
11552         void *hdr;
11553         struct nlattr *data;
11554
11555         skb = nlmsg_new(approxlen + 100, gfp);
11556         if (!skb)
11557                 return NULL;
11558
11559         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11560         if (!hdr) {
11561                 kfree_skb(skb);
11562                 return NULL;
11563         }
11564
11565         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11566                 goto nla_put_failure;
11567
11568         if (info) {
11569                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11570                                 info->vendor_id))
11571                         goto nla_put_failure;
11572                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11573                                 info->subcmd))
11574                         goto nla_put_failure;
11575         }
11576
11577         if (wdev) {
11578                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11579                                       wdev_id(wdev), NL80211_ATTR_PAD))
11580                         goto nla_put_failure;
11581                 if (wdev->netdev &&
11582                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11583                                 wdev->netdev->ifindex))
11584                         goto nla_put_failure;
11585         }
11586
11587         data = nla_nest_start_noflag(skb, attr);
11588         if (!data)
11589                 goto nla_put_failure;
11590
11591         ((void **)skb->cb)[0] = rdev;
11592         ((void **)skb->cb)[1] = hdr;
11593         ((void **)skb->cb)[2] = data;
11594
11595         return skb;
11596
11597  nla_put_failure:
11598         kfree_skb(skb);
11599         return NULL;
11600 }
11601
11602 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11603                                            struct wireless_dev *wdev,
11604                                            enum nl80211_commands cmd,
11605                                            enum nl80211_attrs attr,
11606                                            unsigned int portid,
11607                                            int vendor_event_idx,
11608                                            int approxlen, gfp_t gfp)
11609 {
11610         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11611         const struct nl80211_vendor_cmd_info *info;
11612
11613         switch (cmd) {
11614         case NL80211_CMD_TESTMODE:
11615                 if (WARN_ON(vendor_event_idx != -1))
11616                         return NULL;
11617                 info = NULL;
11618                 break;
11619         case NL80211_CMD_VENDOR:
11620                 if (WARN_ON(vendor_event_idx < 0 ||
11621                             vendor_event_idx >= wiphy->n_vendor_events))
11622                         return NULL;
11623                 info = &wiphy->vendor_events[vendor_event_idx];
11624                 break;
11625         default:
11626                 WARN_ON(1);
11627                 return NULL;
11628         }
11629
11630         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11631                                            cmd, attr, info, gfp);
11632 }
11633 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11634
11635 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11636 {
11637         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11638         void *hdr = ((void **)skb->cb)[1];
11639         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11640         struct nlattr *data = ((void **)skb->cb)[2];
11641         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11642
11643         /* clear CB data for netlink core to own from now on */
11644         memset(skb->cb, 0, sizeof(skb->cb));
11645
11646         nla_nest_end(skb, data);
11647         genlmsg_end(skb, hdr);
11648
11649         if (nlhdr->nlmsg_pid) {
11650                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11651                                 nlhdr->nlmsg_pid);
11652         } else {
11653                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11654                         mcgrp = NL80211_MCGRP_VENDOR;
11655
11656                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11657                                         skb, 0, mcgrp, gfp);
11658         }
11659 }
11660 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11661
11662 #ifdef CONFIG_NL80211_TESTMODE
11663 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11664 {
11665         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11666         struct wireless_dev *wdev;
11667         int err;
11668
11669         lockdep_assert_held(&rdev->wiphy.mtx);
11670
11671         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11672                                           info->attrs);
11673
11674         if (!rdev->ops->testmode_cmd)
11675                 return -EOPNOTSUPP;
11676
11677         if (IS_ERR(wdev)) {
11678                 err = PTR_ERR(wdev);
11679                 if (err != -EINVAL)
11680                         return err;
11681                 wdev = NULL;
11682         } else if (wdev->wiphy != &rdev->wiphy) {
11683                 return -EINVAL;
11684         }
11685
11686         if (!info->attrs[NL80211_ATTR_TESTDATA])
11687                 return -EINVAL;
11688
11689         rdev->cur_cmd_info = info;
11690         err = rdev_testmode_cmd(rdev, wdev,
11691                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11692                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11693         rdev->cur_cmd_info = NULL;
11694
11695         return err;
11696 }
11697
11698 static int nl80211_testmode_dump(struct sk_buff *skb,
11699                                  struct netlink_callback *cb)
11700 {
11701         struct cfg80211_registered_device *rdev;
11702         struct nlattr **attrbuf = NULL;
11703         int err;
11704         long phy_idx;
11705         void *data = NULL;
11706         int data_len = 0;
11707
11708         rtnl_lock();
11709
11710         if (cb->args[0]) {
11711                 /*
11712                  * 0 is a valid index, but not valid for args[0],
11713                  * so we need to offset by 1.
11714                  */
11715                 phy_idx = cb->args[0] - 1;
11716
11717                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11718                 if (!rdev) {
11719                         err = -ENOENT;
11720                         goto out_err;
11721                 }
11722         } else {
11723                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11724                                   GFP_KERNEL);
11725                 if (!attrbuf) {
11726                         err = -ENOMEM;
11727                         goto out_err;
11728                 }
11729
11730                 err = nlmsg_parse_deprecated(cb->nlh,
11731                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11732                                              attrbuf, nl80211_fam.maxattr,
11733                                              nl80211_policy, NULL);
11734                 if (err)
11735                         goto out_err;
11736
11737                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11738                 if (IS_ERR(rdev)) {
11739                         err = PTR_ERR(rdev);
11740                         goto out_err;
11741                 }
11742                 phy_idx = rdev->wiphy_idx;
11743
11744                 if (attrbuf[NL80211_ATTR_TESTDATA])
11745                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11746         }
11747
11748         if (cb->args[1]) {
11749                 data = nla_data((void *)cb->args[1]);
11750                 data_len = nla_len((void *)cb->args[1]);
11751         }
11752
11753         if (!rdev->ops->testmode_dump) {
11754                 err = -EOPNOTSUPP;
11755                 goto out_err;
11756         }
11757
11758         while (1) {
11759                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11760                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11761                                            NL80211_CMD_TESTMODE);
11762                 struct nlattr *tmdata;
11763
11764                 if (!hdr)
11765                         break;
11766
11767                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11768                         genlmsg_cancel(skb, hdr);
11769                         break;
11770                 }
11771
11772                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11773                 if (!tmdata) {
11774                         genlmsg_cancel(skb, hdr);
11775                         break;
11776                 }
11777                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11778                 nla_nest_end(skb, tmdata);
11779
11780                 if (err == -ENOBUFS || err == -ENOENT) {
11781                         genlmsg_cancel(skb, hdr);
11782                         break;
11783                 } else if (err) {
11784                         genlmsg_cancel(skb, hdr);
11785                         goto out_err;
11786                 }
11787
11788                 genlmsg_end(skb, hdr);
11789         }
11790
11791         err = skb->len;
11792         /* see above */
11793         cb->args[0] = phy_idx + 1;
11794  out_err:
11795         kfree(attrbuf);
11796         rtnl_unlock();
11797         return err;
11798 }
11799 #endif
11800
11801 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11802 {
11803         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11804         struct net_device *dev = info->user_ptr[1];
11805         struct cfg80211_connect_params connect;
11806         struct wiphy *wiphy;
11807         struct cfg80211_cached_keys *connkeys = NULL;
11808         u32 freq = 0;
11809         int err;
11810
11811         memset(&connect, 0, sizeof(connect));
11812
11813         if (!info->attrs[NL80211_ATTR_SSID] ||
11814             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11815                 return -EINVAL;
11816
11817         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11818                 connect.auth_type =
11819                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11820                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11821                                              NL80211_CMD_CONNECT))
11822                         return -EINVAL;
11823         } else
11824                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11825
11826         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11827
11828         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11829             !wiphy_ext_feature_isset(&rdev->wiphy,
11830                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11831                 return -EINVAL;
11832         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11833
11834         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11835                                       NL80211_MAX_NR_CIPHER_SUITES);
11836         if (err)
11837                 return err;
11838
11839         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11840             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11841                 return -EOPNOTSUPP;
11842
11843         wiphy = &rdev->wiphy;
11844
11845         connect.bg_scan_period = -1;
11846         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11847                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11848                 connect.bg_scan_period =
11849                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11850         }
11851
11852         if (info->attrs[NL80211_ATTR_MAC])
11853                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11854         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11855                 connect.bssid_hint =
11856                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11857         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11858         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11859
11860         if (info->attrs[NL80211_ATTR_IE]) {
11861                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11862                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11863         }
11864
11865         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11866                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11867                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11868                     !wiphy_ext_feature_isset(&rdev->wiphy,
11869                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11870                         return -EOPNOTSUPP;
11871         } else {
11872                 connect.mfp = NL80211_MFP_NO;
11873         }
11874
11875         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11876                 connect.prev_bssid =
11877                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11878
11879         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11880                 freq = MHZ_TO_KHZ(nla_get_u32(
11881                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11882         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11883                 freq +=
11884                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11885
11886         if (freq) {
11887                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11888                 if (!connect.channel)
11889                         return -EINVAL;
11890         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11891                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11892                 freq = MHZ_TO_KHZ(freq);
11893                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11894                 if (!connect.channel_hint)
11895                         return -EINVAL;
11896         }
11897
11898         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11899                 connect.edmg.channels =
11900                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11901
11902                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11903                         connect.edmg.bw_config =
11904                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11905         }
11906
11907         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11908                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11909                 if (IS_ERR(connkeys))
11910                         return PTR_ERR(connkeys);
11911         }
11912
11913         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11914                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11915
11916         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11917                 memcpy(&connect.ht_capa_mask,
11918                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11919                        sizeof(connect.ht_capa_mask));
11920
11921         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11922                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11923                         kfree_sensitive(connkeys);
11924                         return -EINVAL;
11925                 }
11926                 memcpy(&connect.ht_capa,
11927                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11928                        sizeof(connect.ht_capa));
11929         }
11930
11931         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11932                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11933
11934         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11935                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11936
11937         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11938                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11939
11940         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11941                 memcpy(&connect.vht_capa_mask,
11942                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11943                        sizeof(connect.vht_capa_mask));
11944
11945         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11946                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11947                         kfree_sensitive(connkeys);
11948                         return -EINVAL;
11949                 }
11950                 memcpy(&connect.vht_capa,
11951                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11952                        sizeof(connect.vht_capa));
11953         }
11954
11955         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11956                 if (!((rdev->wiphy.features &
11957                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11958                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11959                     !wiphy_ext_feature_isset(&rdev->wiphy,
11960                                              NL80211_EXT_FEATURE_RRM)) {
11961                         kfree_sensitive(connkeys);
11962                         return -EINVAL;
11963                 }
11964                 connect.flags |= ASSOC_REQ_USE_RRM;
11965         }
11966
11967         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
11968         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
11969                 kfree_sensitive(connkeys);
11970                 return -EOPNOTSUPP;
11971         }
11972
11973         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
11974                 /* bss selection makes no sense if bssid is set */
11975                 if (connect.bssid) {
11976                         kfree_sensitive(connkeys);
11977                         return -EINVAL;
11978                 }
11979
11980                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
11981                                        wiphy, &connect.bss_select);
11982                 if (err) {
11983                         kfree_sensitive(connkeys);
11984                         return err;
11985                 }
11986         }
11987
11988         if (wiphy_ext_feature_isset(&rdev->wiphy,
11989                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
11990             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11991             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11992             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11993             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11994                 connect.fils_erp_username =
11995                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11996                 connect.fils_erp_username_len =
11997                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11998                 connect.fils_erp_realm =
11999                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12000                 connect.fils_erp_realm_len =
12001                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12002                 connect.fils_erp_next_seq_num =
12003                         nla_get_u16(
12004                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12005                 connect.fils_erp_rrk =
12006                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12007                 connect.fils_erp_rrk_len =
12008                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12009         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12010                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12011                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12012                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12013                 kfree_sensitive(connkeys);
12014                 return -EINVAL;
12015         }
12016
12017         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
12018                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12019                         kfree_sensitive(connkeys);
12020                         GENL_SET_ERR_MSG(info,
12021                                          "external auth requires connection ownership");
12022                         return -EINVAL;
12023                 }
12024                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
12025         }
12026
12027         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
12028                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
12029
12030         err = cfg80211_connect(rdev, dev, &connect, connkeys,
12031                                connect.prev_bssid);
12032         if (err)
12033                 kfree_sensitive(connkeys);
12034
12035         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12036                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12037                 if (connect.bssid)
12038                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
12039                                connect.bssid, ETH_ALEN);
12040                 else
12041                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
12042         }
12043
12044         return err;
12045 }
12046
12047 static int nl80211_update_connect_params(struct sk_buff *skb,
12048                                          struct genl_info *info)
12049 {
12050         struct cfg80211_connect_params connect = {};
12051         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12052         struct net_device *dev = info->user_ptr[1];
12053         struct wireless_dev *wdev = dev->ieee80211_ptr;
12054         bool fils_sk_offload;
12055         u32 auth_type;
12056         u32 changed = 0;
12057
12058         if (!rdev->ops->update_connect_params)
12059                 return -EOPNOTSUPP;
12060
12061         if (info->attrs[NL80211_ATTR_IE]) {
12062                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12063                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12064                 changed |= UPDATE_ASSOC_IES;
12065         }
12066
12067         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
12068                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
12069
12070         /*
12071          * when driver supports fils-sk offload all attributes must be
12072          * provided. So the else covers "fils-sk-not-all" and
12073          * "no-fils-sk-any".
12074          */
12075         if (fils_sk_offload &&
12076             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12077             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12078             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12079             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12080                 connect.fils_erp_username =
12081                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12082                 connect.fils_erp_username_len =
12083                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12084                 connect.fils_erp_realm =
12085                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12086                 connect.fils_erp_realm_len =
12087                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12088                 connect.fils_erp_next_seq_num =
12089                         nla_get_u16(
12090                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12091                 connect.fils_erp_rrk =
12092                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12093                 connect.fils_erp_rrk_len =
12094                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12095                 changed |= UPDATE_FILS_ERP_INFO;
12096         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12097                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12098                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12099                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12100                 return -EINVAL;
12101         }
12102
12103         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
12104                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
12105                 if (!nl80211_valid_auth_type(rdev, auth_type,
12106                                              NL80211_CMD_CONNECT))
12107                         return -EINVAL;
12108
12109                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
12110                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
12111                         return -EINVAL;
12112
12113                 connect.auth_type = auth_type;
12114                 changed |= UPDATE_AUTH_TYPE;
12115         }
12116
12117         if (!wdev->connected)
12118                 return -ENOLINK;
12119
12120         return rdev_update_connect_params(rdev, dev, &connect, changed);
12121 }
12122
12123 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
12124 {
12125         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12126         struct net_device *dev = info->user_ptr[1];
12127         u16 reason;
12128
12129         if (dev->ieee80211_ptr->conn_owner_nlportid &&
12130             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
12131                 return -EPERM;
12132
12133         if (!info->attrs[NL80211_ATTR_REASON_CODE])
12134                 reason = WLAN_REASON_DEAUTH_LEAVING;
12135         else
12136                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
12137
12138         if (reason == 0)
12139                 return -EINVAL;
12140
12141         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12142             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12143                 return -EOPNOTSUPP;
12144
12145         return cfg80211_disconnect(rdev, dev, reason, true);
12146 }
12147
12148 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
12149 {
12150         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12151         struct net *net;
12152         int err;
12153
12154         if (info->attrs[NL80211_ATTR_PID]) {
12155                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
12156
12157                 net = get_net_ns_by_pid(pid);
12158         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
12159                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
12160
12161                 net = get_net_ns_by_fd(fd);
12162         } else {
12163                 return -EINVAL;
12164         }
12165
12166         if (IS_ERR(net))
12167                 return PTR_ERR(net);
12168
12169         err = 0;
12170
12171         /* check if anything to do */
12172         if (!net_eq(wiphy_net(&rdev->wiphy), net))
12173                 err = cfg80211_switch_netns(rdev, net);
12174
12175         put_net(net);
12176         return err;
12177 }
12178
12179 static int nl80211_set_pmksa(struct sk_buff *skb, struct genl_info *info)
12180 {
12181         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12182         struct net_device *dev = info->user_ptr[1];
12183         struct cfg80211_pmksa pmksa;
12184         bool ap_pmksa_caching_support = false;
12185
12186         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12187
12188         ap_pmksa_caching_support = wiphy_ext_feature_isset(&rdev->wiphy,
12189                 NL80211_EXT_FEATURE_AP_PMKSA_CACHING);
12190
12191         if (!info->attrs[NL80211_ATTR_PMKID])
12192                 return -EINVAL;
12193
12194         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12195
12196         if (info->attrs[NL80211_ATTR_MAC]) {
12197                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12198         } else if (info->attrs[NL80211_ATTR_SSID] &&
12199                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12200                    info->attrs[NL80211_ATTR_PMK]) {
12201                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12202                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12203                 pmksa.cache_id = nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12204         } else {
12205                 return -EINVAL;
12206         }
12207
12208         if (info->attrs[NL80211_ATTR_PMK]) {
12209                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12210                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12211         }
12212
12213         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
12214                 pmksa.pmk_lifetime =
12215                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
12216
12217         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
12218                 pmksa.pmk_reauth_threshold =
12219                         nla_get_u8(info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
12220
12221         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12222             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12223             !((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
12224                dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO) &&
12225                ap_pmksa_caching_support))
12226                 return -EOPNOTSUPP;
12227
12228         if (!rdev->ops->set_pmksa)
12229                 return -EOPNOTSUPP;
12230
12231         return rdev_set_pmksa(rdev, dev, &pmksa);
12232 }
12233
12234 static int nl80211_del_pmksa(struct sk_buff *skb, struct genl_info *info)
12235 {
12236         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12237         struct net_device *dev = info->user_ptr[1];
12238         struct cfg80211_pmksa pmksa;
12239         bool sae_offload_support = false;
12240         bool owe_offload_support = false;
12241         bool ap_pmksa_caching_support = false;
12242
12243         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12244
12245         sae_offload_support = wiphy_ext_feature_isset(&rdev->wiphy,
12246                 NL80211_EXT_FEATURE_SAE_OFFLOAD);
12247         owe_offload_support = wiphy_ext_feature_isset(&rdev->wiphy,
12248                 NL80211_EXT_FEATURE_OWE_OFFLOAD);
12249         ap_pmksa_caching_support = wiphy_ext_feature_isset(&rdev->wiphy,
12250                 NL80211_EXT_FEATURE_AP_PMKSA_CACHING);
12251
12252         if (info->attrs[NL80211_ATTR_PMKID])
12253                 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12254
12255         if (info->attrs[NL80211_ATTR_MAC]) {
12256                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12257         } else if (info->attrs[NL80211_ATTR_SSID]) {
12258                 /* SSID based pmksa flush suppported only for FILS,
12259                  * OWE/SAE OFFLOAD cases
12260                  */
12261                 if (info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12262                     info->attrs[NL80211_ATTR_PMK]) {
12263                         pmksa.cache_id = nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12264                 } else if (!sae_offload_support && !owe_offload_support) {
12265                         return -EINVAL;
12266                 }
12267                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12268                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12269         } else {
12270                 return -EINVAL;
12271         }
12272
12273         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12274             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12275             !((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
12276                dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO) &&
12277                ap_pmksa_caching_support))
12278                 return -EOPNOTSUPP;
12279
12280         if (!rdev->ops->del_pmksa)
12281                 return -EOPNOTSUPP;
12282
12283         return rdev_del_pmksa(rdev, dev, &pmksa);
12284 }
12285
12286 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12287 {
12288         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12289         struct net_device *dev = info->user_ptr[1];
12290
12291         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12292             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12293                 return -EOPNOTSUPP;
12294
12295         if (!rdev->ops->flush_pmksa)
12296                 return -EOPNOTSUPP;
12297
12298         return rdev_flush_pmksa(rdev, dev);
12299 }
12300
12301 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12302 {
12303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12304         struct net_device *dev = info->user_ptr[1];
12305         u8 action_code, dialog_token;
12306         u32 peer_capability = 0;
12307         u16 status_code;
12308         u8 *peer;
12309         int link_id;
12310         bool initiator;
12311
12312         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12313             !rdev->ops->tdls_mgmt)
12314                 return -EOPNOTSUPP;
12315
12316         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12317             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12318             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12319             !info->attrs[NL80211_ATTR_IE] ||
12320             !info->attrs[NL80211_ATTR_MAC])
12321                 return -EINVAL;
12322
12323         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12324         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12325         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12326         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12327         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12328         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12329                 peer_capability =
12330                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12331         link_id = nl80211_link_id_or_invalid(info->attrs);
12332
12333         return rdev_tdls_mgmt(rdev, dev, peer, link_id, action_code,
12334                               dialog_token, status_code, peer_capability,
12335                               initiator,
12336                               nla_data(info->attrs[NL80211_ATTR_IE]),
12337                               nla_len(info->attrs[NL80211_ATTR_IE]));
12338 }
12339
12340 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12341 {
12342         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12343         struct net_device *dev = info->user_ptr[1];
12344         enum nl80211_tdls_operation operation;
12345         u8 *peer;
12346
12347         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12348             !rdev->ops->tdls_oper)
12349                 return -EOPNOTSUPP;
12350
12351         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12352             !info->attrs[NL80211_ATTR_MAC])
12353                 return -EINVAL;
12354
12355         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12356         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12357
12358         return rdev_tdls_oper(rdev, dev, peer, operation);
12359 }
12360
12361 static int nl80211_remain_on_channel(struct sk_buff *skb,
12362                                      struct genl_info *info)
12363 {
12364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12365         unsigned int link_id = nl80211_link_id(info->attrs);
12366         struct wireless_dev *wdev = info->user_ptr[1];
12367         struct cfg80211_chan_def chandef;
12368         struct sk_buff *msg;
12369         void *hdr;
12370         u64 cookie;
12371         u32 duration;
12372         int err;
12373
12374         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12375             !info->attrs[NL80211_ATTR_DURATION])
12376                 return -EINVAL;
12377
12378         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12379
12380         if (!rdev->ops->remain_on_channel ||
12381             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12382                 return -EOPNOTSUPP;
12383
12384         /*
12385          * We should be on that channel for at least a minimum amount of
12386          * time (10ms) but no longer than the driver supports.
12387          */
12388         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12389             duration > rdev->wiphy.max_remain_on_channel_duration)
12390                 return -EINVAL;
12391
12392         err = nl80211_parse_chandef(rdev, info, &chandef);
12393         if (err)
12394                 return err;
12395
12396         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12397                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12398
12399                 oper_chandef = wdev_chandef(wdev, link_id);
12400
12401                 if (WARN_ON(!oper_chandef)) {
12402                         /* cannot happen since we must beacon to get here */
12403                         WARN_ON(1);
12404                         return -EBUSY;
12405                 }
12406
12407                 /* note: returns first one if identical chandefs */
12408                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12409                                                              oper_chandef);
12410
12411                 if (compat_chandef != &chandef)
12412                         return -EBUSY;
12413         }
12414
12415         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12416         if (!msg)
12417                 return -ENOMEM;
12418
12419         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12420                              NL80211_CMD_REMAIN_ON_CHANNEL);
12421         if (!hdr) {
12422                 err = -ENOBUFS;
12423                 goto free_msg;
12424         }
12425
12426         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12427                                      duration, &cookie);
12428
12429         if (err)
12430                 goto free_msg;
12431
12432         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12433                               NL80211_ATTR_PAD))
12434                 goto nla_put_failure;
12435
12436         genlmsg_end(msg, hdr);
12437
12438         return genlmsg_reply(msg, info);
12439
12440  nla_put_failure:
12441         err = -ENOBUFS;
12442  free_msg:
12443         nlmsg_free(msg);
12444         return err;
12445 }
12446
12447 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12448                                             struct genl_info *info)
12449 {
12450         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12451         struct wireless_dev *wdev = info->user_ptr[1];
12452         u64 cookie;
12453
12454         if (!info->attrs[NL80211_ATTR_COOKIE])
12455                 return -EINVAL;
12456
12457         if (!rdev->ops->cancel_remain_on_channel)
12458                 return -EOPNOTSUPP;
12459
12460         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12461
12462         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12463 }
12464
12465 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12466                                        struct genl_info *info)
12467 {
12468         struct cfg80211_bitrate_mask mask;
12469         unsigned int link_id = nl80211_link_id(info->attrs);
12470         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12471         struct net_device *dev = info->user_ptr[1];
12472         int err;
12473
12474         if (!rdev->ops->set_bitrate_mask)
12475                 return -EOPNOTSUPP;
12476
12477         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12478                                             NL80211_ATTR_TX_RATES, &mask,
12479                                             dev, true, link_id);
12480         if (err)
12481                 return err;
12482
12483         return rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12484 }
12485
12486 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12487 {
12488         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12489         struct wireless_dev *wdev = info->user_ptr[1];
12490         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12491
12492         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12493                 return -EINVAL;
12494
12495         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12496                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12497
12498         switch (wdev->iftype) {
12499         case NL80211_IFTYPE_STATION:
12500         case NL80211_IFTYPE_ADHOC:
12501         case NL80211_IFTYPE_P2P_CLIENT:
12502         case NL80211_IFTYPE_AP:
12503         case NL80211_IFTYPE_AP_VLAN:
12504         case NL80211_IFTYPE_MESH_POINT:
12505         case NL80211_IFTYPE_P2P_GO:
12506         case NL80211_IFTYPE_P2P_DEVICE:
12507                 break;
12508         case NL80211_IFTYPE_NAN:
12509                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12510                                              NL80211_EXT_FEATURE_SECURE_NAN))
12511                         return -EOPNOTSUPP;
12512                 break;
12513         default:
12514                 return -EOPNOTSUPP;
12515         }
12516
12517         /* not much point in registering if we can't reply */
12518         if (!rdev->ops->mgmt_tx)
12519                 return -EOPNOTSUPP;
12520
12521         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12522             !wiphy_ext_feature_isset(&rdev->wiphy,
12523                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12524                 GENL_SET_ERR_MSG(info,
12525                                  "multicast RX registrations are not supported");
12526                 return -EOPNOTSUPP;
12527         }
12528
12529         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12530                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12531                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12532                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12533                                            info->extack);
12534 }
12535
12536 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12537 {
12538         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12539         struct wireless_dev *wdev = info->user_ptr[1];
12540         struct cfg80211_chan_def chandef;
12541         int err;
12542         void *hdr = NULL;
12543         u64 cookie;
12544         struct sk_buff *msg = NULL;
12545         struct cfg80211_mgmt_tx_params params = {
12546                 .dont_wait_for_ack =
12547                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12548         };
12549
12550         if (!info->attrs[NL80211_ATTR_FRAME])
12551                 return -EINVAL;
12552
12553         if (!rdev->ops->mgmt_tx)
12554                 return -EOPNOTSUPP;
12555
12556         switch (wdev->iftype) {
12557         case NL80211_IFTYPE_P2P_DEVICE:
12558                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12559                         return -EINVAL;
12560                 break;
12561         case NL80211_IFTYPE_STATION:
12562         case NL80211_IFTYPE_ADHOC:
12563         case NL80211_IFTYPE_P2P_CLIENT:
12564         case NL80211_IFTYPE_AP:
12565         case NL80211_IFTYPE_AP_VLAN:
12566         case NL80211_IFTYPE_MESH_POINT:
12567         case NL80211_IFTYPE_P2P_GO:
12568                 break;
12569         case NL80211_IFTYPE_NAN:
12570                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12571                                              NL80211_EXT_FEATURE_SECURE_NAN))
12572                         return -EOPNOTSUPP;
12573                 break;
12574         default:
12575                 return -EOPNOTSUPP;
12576         }
12577
12578         if (info->attrs[NL80211_ATTR_DURATION]) {
12579                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12580                         return -EINVAL;
12581                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12582
12583                 /*
12584                  * We should wait on the channel for at least a minimum amount
12585                  * of time (10ms) but no longer than the driver supports.
12586                  */
12587                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12588                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12589                         return -EINVAL;
12590         }
12591
12592         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12593
12594         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12595                 return -EINVAL;
12596
12597         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12598
12599         /* get the channel if any has been specified, otherwise pass NULL to
12600          * the driver. The latter will use the current one
12601          */
12602         chandef.chan = NULL;
12603         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12604                 err = nl80211_parse_chandef(rdev, info, &chandef);
12605                 if (err)
12606                         return err;
12607         }
12608
12609         if (!chandef.chan && params.offchan)
12610                 return -EINVAL;
12611
12612         if (params.offchan &&
12613             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan))
12614                 return -EBUSY;
12615
12616         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12617         /*
12618          * This now races due to the unlock, but we cannot check
12619          * the valid links for the _station_ anyway, so that's up
12620          * to the driver.
12621          */
12622         if (params.link_id >= 0 &&
12623             !(wdev->valid_links & BIT(params.link_id)))
12624                 return -EINVAL;
12625
12626         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12627         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12628
12629         err = nl80211_parse_counter_offsets(rdev, NULL, params.len, -1,
12630                                             info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX],
12631                                             &params.csa_offsets,
12632                                             &params.n_csa_offsets);
12633         if (err)
12634                 return err;
12635
12636         if (!params.dont_wait_for_ack) {
12637                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12638                 if (!msg)
12639                         return -ENOMEM;
12640
12641                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12642                                      NL80211_CMD_FRAME);
12643                 if (!hdr) {
12644                         err = -ENOBUFS;
12645                         goto free_msg;
12646                 }
12647         }
12648
12649         params.chan = chandef.chan;
12650         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12651         if (err)
12652                 goto free_msg;
12653
12654         if (msg) {
12655                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12656                                       NL80211_ATTR_PAD))
12657                         goto nla_put_failure;
12658
12659                 genlmsg_end(msg, hdr);
12660                 return genlmsg_reply(msg, info);
12661         }
12662
12663         return 0;
12664
12665  nla_put_failure:
12666         err = -ENOBUFS;
12667  free_msg:
12668         nlmsg_free(msg);
12669         return err;
12670 }
12671
12672 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12673 {
12674         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12675         struct wireless_dev *wdev = info->user_ptr[1];
12676         u64 cookie;
12677
12678         if (!info->attrs[NL80211_ATTR_COOKIE])
12679                 return -EINVAL;
12680
12681         if (!rdev->ops->mgmt_tx_cancel_wait)
12682                 return -EOPNOTSUPP;
12683
12684         switch (wdev->iftype) {
12685         case NL80211_IFTYPE_STATION:
12686         case NL80211_IFTYPE_ADHOC:
12687         case NL80211_IFTYPE_P2P_CLIENT:
12688         case NL80211_IFTYPE_AP:
12689         case NL80211_IFTYPE_AP_VLAN:
12690         case NL80211_IFTYPE_P2P_GO:
12691         case NL80211_IFTYPE_P2P_DEVICE:
12692                 break;
12693         case NL80211_IFTYPE_NAN:
12694                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12695                                              NL80211_EXT_FEATURE_SECURE_NAN))
12696                         return -EOPNOTSUPP;
12697                 break;
12698         default:
12699                 return -EOPNOTSUPP;
12700         }
12701
12702         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12703
12704         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12705 }
12706
12707 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12708 {
12709         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12710         struct wireless_dev *wdev;
12711         struct net_device *dev = info->user_ptr[1];
12712         u8 ps_state;
12713         bool state;
12714         int err;
12715
12716         if (!info->attrs[NL80211_ATTR_PS_STATE])
12717                 return -EINVAL;
12718
12719         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12720
12721         wdev = dev->ieee80211_ptr;
12722
12723         if (!rdev->ops->set_power_mgmt)
12724                 return -EOPNOTSUPP;
12725
12726         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12727
12728         if (state == wdev->ps)
12729                 return 0;
12730
12731         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12732         if (!err)
12733                 wdev->ps = state;
12734         return err;
12735 }
12736
12737 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12738 {
12739         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12740         enum nl80211_ps_state ps_state;
12741         struct wireless_dev *wdev;
12742         struct net_device *dev = info->user_ptr[1];
12743         struct sk_buff *msg;
12744         void *hdr;
12745         int err;
12746
12747         wdev = dev->ieee80211_ptr;
12748
12749         if (!rdev->ops->set_power_mgmt)
12750                 return -EOPNOTSUPP;
12751
12752         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12753         if (!msg)
12754                 return -ENOMEM;
12755
12756         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12757                              NL80211_CMD_GET_POWER_SAVE);
12758         if (!hdr) {
12759                 err = -ENOBUFS;
12760                 goto free_msg;
12761         }
12762
12763         if (wdev->ps)
12764                 ps_state = NL80211_PS_ENABLED;
12765         else
12766                 ps_state = NL80211_PS_DISABLED;
12767
12768         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12769                 goto nla_put_failure;
12770
12771         genlmsg_end(msg, hdr);
12772         return genlmsg_reply(msg, info);
12773
12774  nla_put_failure:
12775         err = -ENOBUFS;
12776  free_msg:
12777         nlmsg_free(msg);
12778         return err;
12779 }
12780
12781 static const struct nla_policy
12782 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12783         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12784         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12785         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12786         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12787         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12788         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12789         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12790 };
12791
12792 static int nl80211_set_cqm_txe(struct genl_info *info,
12793                                u32 rate, u32 pkts, u32 intvl)
12794 {
12795         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12796         struct net_device *dev = info->user_ptr[1];
12797         struct wireless_dev *wdev = dev->ieee80211_ptr;
12798
12799         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12800                 return -EINVAL;
12801
12802         if (!rdev->ops->set_cqm_txe_config)
12803                 return -EOPNOTSUPP;
12804
12805         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12806             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12807                 return -EOPNOTSUPP;
12808
12809         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12810 }
12811
12812 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12813                                     struct net_device *dev,
12814                                     struct cfg80211_cqm_config *cqm_config)
12815 {
12816         struct wireless_dev *wdev = dev->ieee80211_ptr;
12817         s32 last, low, high;
12818         u32 hyst;
12819         int i, n, low_index;
12820         int err;
12821
12822         /*
12823          * Obtain current RSSI value if possible, if not and no RSSI threshold
12824          * event has been received yet, we should receive an event after a
12825          * connection is established and enough beacons received to calculate
12826          * the average.
12827          */
12828         if (!cqm_config->last_rssi_event_value &&
12829             wdev->links[0].client.current_bss &&
12830             rdev->ops->get_station) {
12831                 struct station_info sinfo = {};
12832                 u8 *mac_addr;
12833
12834                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12835
12836                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12837                 if (err)
12838                         return err;
12839
12840                 cfg80211_sinfo_release_content(&sinfo);
12841                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12842                         cqm_config->last_rssi_event_value =
12843                                 (s8) sinfo.rx_beacon_signal_avg;
12844         }
12845
12846         last = cqm_config->last_rssi_event_value;
12847         hyst = cqm_config->rssi_hyst;
12848         n = cqm_config->n_rssi_thresholds;
12849
12850         for (i = 0; i < n; i++) {
12851                 i = array_index_nospec(i, n);
12852                 if (last < cqm_config->rssi_thresholds[i])
12853                         break;
12854         }
12855
12856         low_index = i - 1;
12857         if (low_index >= 0) {
12858                 low_index = array_index_nospec(low_index, n);
12859                 low = cqm_config->rssi_thresholds[low_index] - hyst;
12860         } else {
12861                 low = S32_MIN;
12862         }
12863         if (i < n) {
12864                 i = array_index_nospec(i, n);
12865                 high = cqm_config->rssi_thresholds[i] + hyst - 1;
12866         } else {
12867                 high = S32_MAX;
12868         }
12869
12870         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12871 }
12872
12873 static int nl80211_set_cqm_rssi(struct genl_info *info,
12874                                 const s32 *thresholds, int n_thresholds,
12875                                 u32 hysteresis)
12876 {
12877         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12878         struct cfg80211_cqm_config *cqm_config = NULL, *old;
12879         struct net_device *dev = info->user_ptr[1];
12880         struct wireless_dev *wdev = dev->ieee80211_ptr;
12881         s32 prev = S32_MIN;
12882         int i, err;
12883
12884         /* Check all values negative and sorted */
12885         for (i = 0; i < n_thresholds; i++) {
12886                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12887                         return -EINVAL;
12888
12889                 prev = thresholds[i];
12890         }
12891
12892         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12893             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12894                 return -EOPNOTSUPP;
12895
12896         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12897                 n_thresholds = 0;
12898
12899         old = wiphy_dereference(wdev->wiphy, wdev->cqm_config);
12900
12901         /* if already disabled just succeed */
12902         if (!n_thresholds && !old)
12903                 return 0;
12904
12905         if (n_thresholds > 1) {
12906                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12907                                              NL80211_EXT_FEATURE_CQM_RSSI_LIST) ||
12908                     !rdev->ops->set_cqm_rssi_range_config)
12909                         return -EOPNOTSUPP;
12910         } else {
12911                 if (!rdev->ops->set_cqm_rssi_config)
12912                         return -EOPNOTSUPP;
12913         }
12914
12915         if (n_thresholds) {
12916                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12917                                                  n_thresholds),
12918                                      GFP_KERNEL);
12919                 if (!cqm_config)
12920                         return -ENOMEM;
12921
12922                 cqm_config->rssi_hyst = hysteresis;
12923                 cqm_config->n_rssi_thresholds = n_thresholds;
12924                 memcpy(cqm_config->rssi_thresholds, thresholds,
12925                        flex_array_size(cqm_config, rssi_thresholds,
12926                                        n_thresholds));
12927                 cqm_config->use_range_api = n_thresholds > 1 ||
12928                                             !rdev->ops->set_cqm_rssi_config;
12929
12930                 rcu_assign_pointer(wdev->cqm_config, cqm_config);
12931
12932                 if (cqm_config->use_range_api)
12933                         err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config);
12934                 else
12935                         err = rdev_set_cqm_rssi_config(rdev, dev,
12936                                                        thresholds[0],
12937                                                        hysteresis);
12938         } else {
12939                 RCU_INIT_POINTER(wdev->cqm_config, NULL);
12940                 /* if enabled as range also disable via range */
12941                 if (old->use_range_api)
12942                         err = rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12943                 else
12944                         err = rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12945         }
12946
12947         if (err) {
12948                 rcu_assign_pointer(wdev->cqm_config, old);
12949                 kfree_rcu(cqm_config, rcu_head);
12950         } else {
12951                 kfree_rcu(old, rcu_head);
12952         }
12953
12954         return err;
12955 }
12956
12957 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
12958 {
12959         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
12960         struct nlattr *cqm;
12961         int err;
12962
12963         cqm = info->attrs[NL80211_ATTR_CQM];
12964         if (!cqm)
12965                 return -EINVAL;
12966
12967         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
12968                                           nl80211_attr_cqm_policy,
12969                                           info->extack);
12970         if (err)
12971                 return err;
12972
12973         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
12974             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
12975                 const s32 *thresholds =
12976                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12977                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12978                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
12979
12980                 if (len % 4)
12981                         return -EINVAL;
12982
12983                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
12984                                             hysteresis);
12985         }
12986
12987         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
12988             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
12989             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
12990                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
12991                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
12992                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
12993
12994                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
12995         }
12996
12997         return -EINVAL;
12998 }
12999
13000 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
13001 {
13002         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13003         struct net_device *dev = info->user_ptr[1];
13004         struct ocb_setup setup = {};
13005         int err;
13006
13007         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13008         if (err)
13009                 return err;
13010
13011         return cfg80211_join_ocb(rdev, dev, &setup);
13012 }
13013
13014 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
13015 {
13016         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13017         struct net_device *dev = info->user_ptr[1];
13018
13019         return cfg80211_leave_ocb(rdev, dev);
13020 }
13021
13022 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
13023 {
13024         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13025         struct net_device *dev = info->user_ptr[1];
13026         struct mesh_config cfg;
13027         struct mesh_setup setup;
13028         int err;
13029
13030         /* start with default */
13031         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
13032         memcpy(&setup, &default_mesh_setup, sizeof(setup));
13033
13034         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
13035                 /* and parse parameters if given */
13036                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
13037                 if (err)
13038                         return err;
13039         }
13040
13041         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
13042             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
13043                 return -EINVAL;
13044
13045         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
13046         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
13047
13048         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
13049             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
13050                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
13051                         return -EINVAL;
13052
13053         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
13054                 setup.beacon_interval =
13055                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
13056
13057                 err = cfg80211_validate_beacon_int(rdev,
13058                                                    NL80211_IFTYPE_MESH_POINT,
13059                                                    setup.beacon_interval);
13060                 if (err)
13061                         return err;
13062         }
13063
13064         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
13065                 setup.dtim_period =
13066                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
13067                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
13068                         return -EINVAL;
13069         }
13070
13071         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
13072                 /* parse additional setup parameters if given */
13073                 err = nl80211_parse_mesh_setup(info, &setup);
13074                 if (err)
13075                         return err;
13076         }
13077
13078         if (setup.user_mpm)
13079                 cfg.auto_open_plinks = false;
13080
13081         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
13082                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13083                 if (err)
13084                         return err;
13085         } else {
13086                 /* __cfg80211_join_mesh() will sort it out */
13087                 setup.chandef.chan = NULL;
13088         }
13089
13090         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
13091                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13092                 int n_rates =
13093                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13094                 struct ieee80211_supported_band *sband;
13095
13096                 if (!setup.chandef.chan)
13097                         return -EINVAL;
13098
13099                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
13100
13101                 err = ieee80211_get_ratemask(sband, rates, n_rates,
13102                                              &setup.basic_rates);
13103                 if (err)
13104                         return err;
13105         }
13106
13107         if (info->attrs[NL80211_ATTR_TX_RATES]) {
13108                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
13109                                                     NL80211_ATTR_TX_RATES,
13110                                                     &setup.beacon_rate,
13111                                                     dev, false, 0);
13112                 if (err)
13113                         return err;
13114
13115                 if (!setup.chandef.chan)
13116                         return -EINVAL;
13117
13118                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
13119                                               &setup.beacon_rate);
13120                 if (err)
13121                         return err;
13122         }
13123
13124         setup.userspace_handles_dfs =
13125                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
13126
13127         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
13128                 int r = validate_pae_over_nl80211(rdev, info);
13129
13130                 if (r < 0)
13131                         return r;
13132
13133                 setup.control_port_over_nl80211 = true;
13134         }
13135
13136         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
13137         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
13138                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
13139
13140         return err;
13141 }
13142
13143 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
13144 {
13145         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13146         struct net_device *dev = info->user_ptr[1];
13147
13148         return cfg80211_leave_mesh(rdev, dev);
13149 }
13150
13151 #ifdef CONFIG_PM
13152 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
13153                                         struct cfg80211_registered_device *rdev)
13154 {
13155         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
13156         struct nlattr *nl_pats, *nl_pat;
13157         int i, pat_len;
13158
13159         if (!wowlan->n_patterns)
13160                 return 0;
13161
13162         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
13163         if (!nl_pats)
13164                 return -ENOBUFS;
13165
13166         for (i = 0; i < wowlan->n_patterns; i++) {
13167                 nl_pat = nla_nest_start_noflag(msg, i + 1);
13168                 if (!nl_pat)
13169                         return -ENOBUFS;
13170                 pat_len = wowlan->patterns[i].pattern_len;
13171                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
13172                             wowlan->patterns[i].mask) ||
13173                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13174                             wowlan->patterns[i].pattern) ||
13175                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13176                                 wowlan->patterns[i].pkt_offset))
13177                         return -ENOBUFS;
13178                 nla_nest_end(msg, nl_pat);
13179         }
13180         nla_nest_end(msg, nl_pats);
13181
13182         return 0;
13183 }
13184
13185 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
13186                                    struct cfg80211_wowlan_tcp *tcp)
13187 {
13188         struct nlattr *nl_tcp;
13189
13190         if (!tcp)
13191                 return 0;
13192
13193         nl_tcp = nla_nest_start_noflag(msg,
13194                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
13195         if (!nl_tcp)
13196                 return -ENOBUFS;
13197
13198         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
13199             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
13200             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
13201             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
13202             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
13203             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
13204                     tcp->payload_len, tcp->payload) ||
13205             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
13206                         tcp->data_interval) ||
13207             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
13208                     tcp->wake_len, tcp->wake_data) ||
13209             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
13210                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
13211                 return -ENOBUFS;
13212
13213         if (tcp->payload_seq.len &&
13214             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
13215                     sizeof(tcp->payload_seq), &tcp->payload_seq))
13216                 return -ENOBUFS;
13217
13218         if (tcp->payload_tok.len &&
13219             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
13220                     sizeof(tcp->payload_tok) + tcp->tokens_size,
13221                     &tcp->payload_tok))
13222                 return -ENOBUFS;
13223
13224         nla_nest_end(msg, nl_tcp);
13225
13226         return 0;
13227 }
13228
13229 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
13230                                   struct cfg80211_sched_scan_request *req)
13231 {
13232         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
13233         int i;
13234
13235         if (!req)
13236                 return 0;
13237
13238         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
13239         if (!nd)
13240                 return -ENOBUFS;
13241
13242         if (req->n_scan_plans == 1 &&
13243             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
13244                         req->scan_plans[0].interval * 1000))
13245                 return -ENOBUFS;
13246
13247         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
13248                 return -ENOBUFS;
13249
13250         if (req->relative_rssi_set) {
13251                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
13252
13253                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
13254                                req->relative_rssi))
13255                         return -ENOBUFS;
13256
13257                 rssi_adjust.band = req->rssi_adjust.band;
13258                 rssi_adjust.delta = req->rssi_adjust.delta;
13259                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13260                             sizeof(rssi_adjust), &rssi_adjust))
13261                         return -ENOBUFS;
13262         }
13263
13264         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13265         if (!freqs)
13266                 return -ENOBUFS;
13267
13268         for (i = 0; i < req->n_channels; i++) {
13269                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13270                         return -ENOBUFS;
13271         }
13272
13273         nla_nest_end(msg, freqs);
13274
13275         if (req->n_match_sets) {
13276                 matches = nla_nest_start_noflag(msg,
13277                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
13278                 if (!matches)
13279                         return -ENOBUFS;
13280
13281                 for (i = 0; i < req->n_match_sets; i++) {
13282                         match = nla_nest_start_noflag(msg, i);
13283                         if (!match)
13284                                 return -ENOBUFS;
13285
13286                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13287                                     req->match_sets[i].ssid.ssid_len,
13288                                     req->match_sets[i].ssid.ssid))
13289                                 return -ENOBUFS;
13290                         nla_nest_end(msg, match);
13291                 }
13292                 nla_nest_end(msg, matches);
13293         }
13294
13295         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13296         if (!scan_plans)
13297                 return -ENOBUFS;
13298
13299         for (i = 0; i < req->n_scan_plans; i++) {
13300                 scan_plan = nla_nest_start_noflag(msg, i + 1);
13301                 if (!scan_plan)
13302                         return -ENOBUFS;
13303
13304                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13305                                 req->scan_plans[i].interval) ||
13306                     (req->scan_plans[i].iterations &&
13307                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13308                                  req->scan_plans[i].iterations)))
13309                         return -ENOBUFS;
13310                 nla_nest_end(msg, scan_plan);
13311         }
13312         nla_nest_end(msg, scan_plans);
13313
13314         nla_nest_end(msg, nd);
13315
13316         return 0;
13317 }
13318
13319 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13320 {
13321         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13322         struct sk_buff *msg;
13323         void *hdr;
13324         u32 size = NLMSG_DEFAULT_SIZE;
13325
13326         if (!rdev->wiphy.wowlan)
13327                 return -EOPNOTSUPP;
13328
13329         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13330                 /* adjust size to have room for all the data */
13331                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13332                         rdev->wiphy.wowlan_config->tcp->payload_len +
13333                         rdev->wiphy.wowlan_config->tcp->wake_len +
13334                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13335         }
13336
13337         msg = nlmsg_new(size, GFP_KERNEL);
13338         if (!msg)
13339                 return -ENOMEM;
13340
13341         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13342                              NL80211_CMD_GET_WOWLAN);
13343         if (!hdr)
13344                 goto nla_put_failure;
13345
13346         if (rdev->wiphy.wowlan_config) {
13347                 struct nlattr *nl_wowlan;
13348
13349                 nl_wowlan = nla_nest_start_noflag(msg,
13350                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
13351                 if (!nl_wowlan)
13352                         goto nla_put_failure;
13353
13354                 if ((rdev->wiphy.wowlan_config->any &&
13355                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13356                     (rdev->wiphy.wowlan_config->disconnect &&
13357                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13358                     (rdev->wiphy.wowlan_config->magic_pkt &&
13359                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13360                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13361                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13362                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13363                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13364                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13365                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13366                     (rdev->wiphy.wowlan_config->rfkill_release &&
13367                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13368                         goto nla_put_failure;
13369
13370                 if (nl80211_send_wowlan_patterns(msg, rdev))
13371                         goto nla_put_failure;
13372
13373                 if (nl80211_send_wowlan_tcp(msg,
13374                                             rdev->wiphy.wowlan_config->tcp))
13375                         goto nla_put_failure;
13376
13377                 if (nl80211_send_wowlan_nd(
13378                             msg,
13379                             rdev->wiphy.wowlan_config->nd_config))
13380                         goto nla_put_failure;
13381
13382                 nla_nest_end(msg, nl_wowlan);
13383         }
13384
13385         genlmsg_end(msg, hdr);
13386         return genlmsg_reply(msg, info);
13387
13388 nla_put_failure:
13389         nlmsg_free(msg);
13390         return -ENOBUFS;
13391 }
13392
13393 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13394                                     struct nlattr *attr,
13395                                     struct cfg80211_wowlan *trig)
13396 {
13397         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13398         struct cfg80211_wowlan_tcp *cfg;
13399         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13400         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13401         u32 size;
13402         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13403         int err, port;
13404
13405         if (!rdev->wiphy.wowlan->tcp)
13406                 return -EINVAL;
13407
13408         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13409                                           nl80211_wowlan_tcp_policy, NULL);
13410         if (err)
13411                 return err;
13412
13413         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13414             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13415             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13416             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13417             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13418             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13419             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13420             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13421                 return -EINVAL;
13422
13423         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13424         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13425                 return -EINVAL;
13426
13427         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13428                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13429             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13430                 return -EINVAL;
13431
13432         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13433         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13434                 return -EINVAL;
13435
13436         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13437         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13438                 return -EINVAL;
13439
13440         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13441                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13442
13443                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13444                 tokens_size = tokln - sizeof(*tok);
13445
13446                 if (!tok->len || tokens_size % tok->len)
13447                         return -EINVAL;
13448                 if (!rdev->wiphy.wowlan->tcp->tok)
13449                         return -EINVAL;
13450                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13451                         return -EINVAL;
13452                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13453                         return -EINVAL;
13454                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13455                         return -EINVAL;
13456                 if (tok->offset + tok->len > data_size)
13457                         return -EINVAL;
13458         }
13459
13460         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13461                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13462                 if (!rdev->wiphy.wowlan->tcp->seq)
13463                         return -EINVAL;
13464                 if (seq->len == 0 || seq->len > 4)
13465                         return -EINVAL;
13466                 if (seq->len + seq->offset > data_size)
13467                         return -EINVAL;
13468         }
13469
13470         size = sizeof(*cfg);
13471         size += data_size;
13472         size += wake_size + wake_mask_size;
13473         size += tokens_size;
13474
13475         cfg = kzalloc(size, GFP_KERNEL);
13476         if (!cfg)
13477                 return -ENOMEM;
13478         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13479         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13480         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13481                ETH_ALEN);
13482         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13483                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13484         else
13485                 port = 0;
13486 #ifdef CONFIG_INET
13487         /* allocate a socket and port for it and use it */
13488         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13489                             IPPROTO_TCP, &cfg->sock, 1);
13490         if (err) {
13491                 kfree(cfg);
13492                 return err;
13493         }
13494         if (inet_csk_get_port(cfg->sock->sk, port)) {
13495                 sock_release(cfg->sock);
13496                 kfree(cfg);
13497                 return -EADDRINUSE;
13498         }
13499         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13500 #else
13501         if (!port) {
13502                 kfree(cfg);
13503                 return -EINVAL;
13504         }
13505         cfg->src_port = port;
13506 #endif
13507
13508         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13509         cfg->payload_len = data_size;
13510         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13511         memcpy((void *)cfg->payload,
13512                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13513                data_size);
13514         if (seq)
13515                 cfg->payload_seq = *seq;
13516         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13517         cfg->wake_len = wake_size;
13518         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13519         memcpy((void *)cfg->wake_data,
13520                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13521                wake_size);
13522         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13523                          data_size + wake_size;
13524         memcpy((void *)cfg->wake_mask,
13525                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13526                wake_mask_size);
13527         if (tok) {
13528                 cfg->tokens_size = tokens_size;
13529                 cfg->payload_tok = *tok;
13530                 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13531                        tokens_size);
13532         }
13533
13534         trig->tcp = cfg;
13535
13536         return 0;
13537 }
13538
13539 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13540                                    const struct wiphy_wowlan_support *wowlan,
13541                                    struct nlattr *attr,
13542                                    struct cfg80211_wowlan *trig)
13543 {
13544         struct nlattr **tb;
13545         int err;
13546
13547         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13548         if (!tb)
13549                 return -ENOMEM;
13550
13551         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13552                 err = -EOPNOTSUPP;
13553                 goto out;
13554         }
13555
13556         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13557                                           nl80211_policy, NULL);
13558         if (err)
13559                 goto out;
13560
13561         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13562                                                    wowlan->max_nd_match_sets);
13563         err = PTR_ERR_OR_ZERO(trig->nd_config);
13564         if (err)
13565                 trig->nd_config = NULL;
13566
13567 out:
13568         kfree(tb);
13569         return err;
13570 }
13571
13572 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13573 {
13574         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13575         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13576         struct cfg80211_wowlan new_triggers = {};
13577         struct cfg80211_wowlan *ntrig;
13578         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13579         int err, i;
13580         bool prev_enabled = rdev->wiphy.wowlan_config;
13581         bool regular = false;
13582
13583         if (!wowlan)
13584                 return -EOPNOTSUPP;
13585
13586         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13587                 cfg80211_rdev_free_wowlan(rdev);
13588                 rdev->wiphy.wowlan_config = NULL;
13589                 goto set_wakeup;
13590         }
13591
13592         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13593                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13594                                           nl80211_wowlan_policy, info->extack);
13595         if (err)
13596                 return err;
13597
13598         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13599                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13600                         return -EINVAL;
13601                 new_triggers.any = true;
13602         }
13603
13604         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13605                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13606                         return -EINVAL;
13607                 new_triggers.disconnect = true;
13608                 regular = true;
13609         }
13610
13611         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13612                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13613                         return -EINVAL;
13614                 new_triggers.magic_pkt = true;
13615                 regular = true;
13616         }
13617
13618         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13619                 return -EINVAL;
13620
13621         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13622                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13623                         return -EINVAL;
13624                 new_triggers.gtk_rekey_failure = true;
13625                 regular = true;
13626         }
13627
13628         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13629                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13630                         return -EINVAL;
13631                 new_triggers.eap_identity_req = true;
13632                 regular = true;
13633         }
13634
13635         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13636                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13637                         return -EINVAL;
13638                 new_triggers.four_way_handshake = true;
13639                 regular = true;
13640         }
13641
13642         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13643                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13644                         return -EINVAL;
13645                 new_triggers.rfkill_release = true;
13646                 regular = true;
13647         }
13648
13649         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13650                 struct nlattr *pat;
13651                 int n_patterns = 0;
13652                 int rem, pat_len, mask_len, pkt_offset;
13653                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13654
13655                 regular = true;
13656
13657                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13658                                     rem)
13659                         n_patterns++;
13660                 if (n_patterns > wowlan->n_patterns)
13661                         return -EINVAL;
13662
13663                 new_triggers.patterns = kcalloc(n_patterns,
13664                                                 sizeof(new_triggers.patterns[0]),
13665                                                 GFP_KERNEL);
13666                 if (!new_triggers.patterns)
13667                         return -ENOMEM;
13668
13669                 new_triggers.n_patterns = n_patterns;
13670                 i = 0;
13671
13672                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13673                                     rem) {
13674                         u8 *mask_pat;
13675
13676                         err = nla_parse_nested_deprecated(pat_tb,
13677                                                           MAX_NL80211_PKTPAT,
13678                                                           pat,
13679                                                           nl80211_packet_pattern_policy,
13680                                                           info->extack);
13681                         if (err)
13682                                 goto error;
13683
13684                         err = -EINVAL;
13685                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13686                             !pat_tb[NL80211_PKTPAT_PATTERN])
13687                                 goto error;
13688                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13689                         mask_len = DIV_ROUND_UP(pat_len, 8);
13690                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13691                                 goto error;
13692                         if (pat_len > wowlan->pattern_max_len ||
13693                             pat_len < wowlan->pattern_min_len)
13694                                 goto error;
13695
13696                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13697                                 pkt_offset = 0;
13698                         else
13699                                 pkt_offset = nla_get_u32(
13700                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13701                         if (pkt_offset > wowlan->max_pkt_offset)
13702                                 goto error;
13703                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13704
13705                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13706                         if (!mask_pat) {
13707                                 err = -ENOMEM;
13708                                 goto error;
13709                         }
13710                         new_triggers.patterns[i].mask = mask_pat;
13711                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13712                                mask_len);
13713                         mask_pat += mask_len;
13714                         new_triggers.patterns[i].pattern = mask_pat;
13715                         new_triggers.patterns[i].pattern_len = pat_len;
13716                         memcpy(mask_pat,
13717                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13718                                pat_len);
13719                         i++;
13720                 }
13721         }
13722
13723         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13724                 regular = true;
13725                 err = nl80211_parse_wowlan_tcp(
13726                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13727                         &new_triggers);
13728                 if (err)
13729                         goto error;
13730         }
13731
13732         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13733                 regular = true;
13734                 err = nl80211_parse_wowlan_nd(
13735                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13736                         &new_triggers);
13737                 if (err)
13738                         goto error;
13739         }
13740
13741         /* The 'any' trigger means the device continues operating more or less
13742          * as in its normal operation mode and wakes up the host on most of the
13743          * normal interrupts (like packet RX, ...)
13744          * It therefore makes little sense to combine with the more constrained
13745          * wakeup trigger modes.
13746          */
13747         if (new_triggers.any && regular) {
13748                 err = -EINVAL;
13749                 goto error;
13750         }
13751
13752         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13753         if (!ntrig) {
13754                 err = -ENOMEM;
13755                 goto error;
13756         }
13757         cfg80211_rdev_free_wowlan(rdev);
13758         rdev->wiphy.wowlan_config = ntrig;
13759
13760  set_wakeup:
13761         if (rdev->ops->set_wakeup &&
13762             prev_enabled != !!rdev->wiphy.wowlan_config)
13763                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13764
13765         return 0;
13766  error:
13767         for (i = 0; i < new_triggers.n_patterns; i++)
13768                 kfree(new_triggers.patterns[i].mask);
13769         kfree(new_triggers.patterns);
13770         if (new_triggers.tcp && new_triggers.tcp->sock)
13771                 sock_release(new_triggers.tcp->sock);
13772         kfree(new_triggers.tcp);
13773         kfree(new_triggers.nd_config);
13774         return err;
13775 }
13776 #endif
13777
13778 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13779                                        struct cfg80211_registered_device *rdev)
13780 {
13781         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13782         int i, j, pat_len;
13783         struct cfg80211_coalesce_rules *rule;
13784
13785         if (!rdev->coalesce->n_rules)
13786                 return 0;
13787
13788         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13789         if (!nl_rules)
13790                 return -ENOBUFS;
13791
13792         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13793                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13794                 if (!nl_rule)
13795                         return -ENOBUFS;
13796
13797                 rule = &rdev->coalesce->rules[i];
13798                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13799                                 rule->delay))
13800                         return -ENOBUFS;
13801
13802                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13803                                 rule->condition))
13804                         return -ENOBUFS;
13805
13806                 nl_pats = nla_nest_start_noflag(msg,
13807                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13808                 if (!nl_pats)
13809                         return -ENOBUFS;
13810
13811                 for (j = 0; j < rule->n_patterns; j++) {
13812                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13813                         if (!nl_pat)
13814                                 return -ENOBUFS;
13815                         pat_len = rule->patterns[j].pattern_len;
13816                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13817                                     DIV_ROUND_UP(pat_len, 8),
13818                                     rule->patterns[j].mask) ||
13819                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13820                                     rule->patterns[j].pattern) ||
13821                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13822                                         rule->patterns[j].pkt_offset))
13823                                 return -ENOBUFS;
13824                         nla_nest_end(msg, nl_pat);
13825                 }
13826                 nla_nest_end(msg, nl_pats);
13827                 nla_nest_end(msg, nl_rule);
13828         }
13829         nla_nest_end(msg, nl_rules);
13830
13831         return 0;
13832 }
13833
13834 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13835 {
13836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13837         struct sk_buff *msg;
13838         void *hdr;
13839
13840         if (!rdev->wiphy.coalesce)
13841                 return -EOPNOTSUPP;
13842
13843         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13844         if (!msg)
13845                 return -ENOMEM;
13846
13847         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13848                              NL80211_CMD_GET_COALESCE);
13849         if (!hdr)
13850                 goto nla_put_failure;
13851
13852         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13853                 goto nla_put_failure;
13854
13855         genlmsg_end(msg, hdr);
13856         return genlmsg_reply(msg, info);
13857
13858 nla_put_failure:
13859         nlmsg_free(msg);
13860         return -ENOBUFS;
13861 }
13862
13863 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13864 {
13865         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13866         int i, j;
13867         struct cfg80211_coalesce_rules *rule;
13868
13869         if (!coalesce)
13870                 return;
13871
13872         for (i = 0; i < coalesce->n_rules; i++) {
13873                 rule = &coalesce->rules[i];
13874                 for (j = 0; j < rule->n_patterns; j++)
13875                         kfree(rule->patterns[j].mask);
13876                 kfree(rule->patterns);
13877         }
13878         kfree(coalesce->rules);
13879         kfree(coalesce);
13880         rdev->coalesce = NULL;
13881 }
13882
13883 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13884                                        struct nlattr *rule,
13885                                        struct cfg80211_coalesce_rules *new_rule)
13886 {
13887         int err, i;
13888         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13889         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13890         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13891         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13892
13893         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13894                                           rule, nl80211_coalesce_policy, NULL);
13895         if (err)
13896                 return err;
13897
13898         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13899                 new_rule->delay =
13900                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13901         if (new_rule->delay > coalesce->max_delay)
13902                 return -EINVAL;
13903
13904         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13905                 new_rule->condition =
13906                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13907
13908         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13909                 return -EINVAL;
13910
13911         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13912                             rem)
13913                 n_patterns++;
13914         if (n_patterns > coalesce->n_patterns)
13915                 return -EINVAL;
13916
13917         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13918                                      GFP_KERNEL);
13919         if (!new_rule->patterns)
13920                 return -ENOMEM;
13921
13922         new_rule->n_patterns = n_patterns;
13923         i = 0;
13924
13925         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13926                             rem) {
13927                 u8 *mask_pat;
13928
13929                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13930                                                   pat,
13931                                                   nl80211_packet_pattern_policy,
13932                                                   NULL);
13933                 if (err)
13934                         return err;
13935
13936                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13937                     !pat_tb[NL80211_PKTPAT_PATTERN])
13938                         return -EINVAL;
13939                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13940                 mask_len = DIV_ROUND_UP(pat_len, 8);
13941                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13942                         return -EINVAL;
13943                 if (pat_len > coalesce->pattern_max_len ||
13944                     pat_len < coalesce->pattern_min_len)
13945                         return -EINVAL;
13946
13947                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13948                         pkt_offset = 0;
13949                 else
13950                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13951                 if (pkt_offset > coalesce->max_pkt_offset)
13952                         return -EINVAL;
13953                 new_rule->patterns[i].pkt_offset = pkt_offset;
13954
13955                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13956                 if (!mask_pat)
13957                         return -ENOMEM;
13958
13959                 new_rule->patterns[i].mask = mask_pat;
13960                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13961                        mask_len);
13962
13963                 mask_pat += mask_len;
13964                 new_rule->patterns[i].pattern = mask_pat;
13965                 new_rule->patterns[i].pattern_len = pat_len;
13966                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13967                        pat_len);
13968                 i++;
13969         }
13970
13971         return 0;
13972 }
13973
13974 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
13975 {
13976         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13977         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13978         struct cfg80211_coalesce new_coalesce = {};
13979         struct cfg80211_coalesce *n_coalesce;
13980         int err, rem_rule, n_rules = 0, i, j;
13981         struct nlattr *rule;
13982         struct cfg80211_coalesce_rules *tmp_rule;
13983
13984         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
13985                 return -EOPNOTSUPP;
13986
13987         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
13988                 cfg80211_rdev_free_coalesce(rdev);
13989                 rdev_set_coalesce(rdev, NULL);
13990                 return 0;
13991         }
13992
13993         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13994                             rem_rule)
13995                 n_rules++;
13996         if (n_rules > coalesce->n_rules)
13997                 return -EINVAL;
13998
13999         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
14000                                      GFP_KERNEL);
14001         if (!new_coalesce.rules)
14002                 return -ENOMEM;
14003
14004         new_coalesce.n_rules = n_rules;
14005         i = 0;
14006
14007         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14008                             rem_rule) {
14009                 err = nl80211_parse_coalesce_rule(rdev, rule,
14010                                                   &new_coalesce.rules[i]);
14011                 if (err)
14012                         goto error;
14013
14014                 i++;
14015         }
14016
14017         err = rdev_set_coalesce(rdev, &new_coalesce);
14018         if (err)
14019                 goto error;
14020
14021         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
14022         if (!n_coalesce) {
14023                 err = -ENOMEM;
14024                 goto error;
14025         }
14026         cfg80211_rdev_free_coalesce(rdev);
14027         rdev->coalesce = n_coalesce;
14028
14029         return 0;
14030 error:
14031         for (i = 0; i < new_coalesce.n_rules; i++) {
14032                 tmp_rule = &new_coalesce.rules[i];
14033                 for (j = 0; j < tmp_rule->n_patterns; j++)
14034                         kfree(tmp_rule->patterns[j].mask);
14035                 kfree(tmp_rule->patterns);
14036         }
14037         kfree(new_coalesce.rules);
14038
14039         return err;
14040 }
14041
14042 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
14043 {
14044         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14045         struct net_device *dev = info->user_ptr[1];
14046         struct wireless_dev *wdev = dev->ieee80211_ptr;
14047         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
14048         struct cfg80211_gtk_rekey_data rekey_data = {};
14049         int err;
14050
14051         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
14052                 return -EINVAL;
14053
14054         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
14055                                           info->attrs[NL80211_ATTR_REKEY_DATA],
14056                                           nl80211_rekey_policy, info->extack);
14057         if (err)
14058                 return err;
14059
14060         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
14061             !tb[NL80211_REKEY_DATA_KCK])
14062                 return -EINVAL;
14063         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
14064             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14065               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
14066                 return -ERANGE;
14067         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
14068             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14069               nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) &&
14070              !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 &&
14071                nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32))
14072                 return -ERANGE;
14073
14074         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
14075         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
14076         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
14077         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
14078         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
14079         if (tb[NL80211_REKEY_DATA_AKM])
14080                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
14081
14082         if (!wdev->connected)
14083                 return -ENOTCONN;
14084
14085         if (!rdev->ops->set_rekey_data)
14086                 return -EOPNOTSUPP;
14087
14088         return rdev_set_rekey_data(rdev, dev, &rekey_data);
14089 }
14090
14091 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
14092                                              struct genl_info *info)
14093 {
14094         struct net_device *dev = info->user_ptr[1];
14095         struct wireless_dev *wdev = dev->ieee80211_ptr;
14096
14097         if (wdev->iftype != NL80211_IFTYPE_AP &&
14098             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14099                 return -EINVAL;
14100
14101         if (wdev->ap_unexpected_nlportid)
14102                 return -EBUSY;
14103
14104         wdev->ap_unexpected_nlportid = info->snd_portid;
14105         return 0;
14106 }
14107
14108 static int nl80211_probe_client(struct sk_buff *skb,
14109                                 struct genl_info *info)
14110 {
14111         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14112         struct net_device *dev = info->user_ptr[1];
14113         struct wireless_dev *wdev = dev->ieee80211_ptr;
14114         struct sk_buff *msg;
14115         void *hdr;
14116         const u8 *addr;
14117         u64 cookie;
14118         int err;
14119
14120         if (wdev->iftype != NL80211_IFTYPE_AP &&
14121             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14122                 return -EOPNOTSUPP;
14123
14124         if (!info->attrs[NL80211_ATTR_MAC])
14125                 return -EINVAL;
14126
14127         if (!rdev->ops->probe_client)
14128                 return -EOPNOTSUPP;
14129
14130         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14131         if (!msg)
14132                 return -ENOMEM;
14133
14134         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14135                              NL80211_CMD_PROBE_CLIENT);
14136         if (!hdr) {
14137                 err = -ENOBUFS;
14138                 goto free_msg;
14139         }
14140
14141         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14142
14143         err = rdev_probe_client(rdev, dev, addr, &cookie);
14144         if (err)
14145                 goto free_msg;
14146
14147         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14148                               NL80211_ATTR_PAD))
14149                 goto nla_put_failure;
14150
14151         genlmsg_end(msg, hdr);
14152
14153         return genlmsg_reply(msg, info);
14154
14155  nla_put_failure:
14156         err = -ENOBUFS;
14157  free_msg:
14158         nlmsg_free(msg);
14159         return err;
14160 }
14161
14162 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
14163 {
14164         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14165         struct cfg80211_beacon_registration *reg, *nreg;
14166         int rv;
14167
14168         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
14169                 return -EOPNOTSUPP;
14170
14171         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
14172         if (!nreg)
14173                 return -ENOMEM;
14174
14175         /* First, check if already registered. */
14176         spin_lock_bh(&rdev->beacon_registrations_lock);
14177         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14178                 if (reg->nlportid == info->snd_portid) {
14179                         rv = -EALREADY;
14180                         goto out_err;
14181                 }
14182         }
14183         /* Add it to the list */
14184         nreg->nlportid = info->snd_portid;
14185         list_add(&nreg->list, &rdev->beacon_registrations);
14186
14187         spin_unlock_bh(&rdev->beacon_registrations_lock);
14188
14189         return 0;
14190 out_err:
14191         spin_unlock_bh(&rdev->beacon_registrations_lock);
14192         kfree(nreg);
14193         return rv;
14194 }
14195
14196 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
14197 {
14198         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14199         struct wireless_dev *wdev = info->user_ptr[1];
14200         int err;
14201
14202         if (!rdev->ops->start_p2p_device)
14203                 return -EOPNOTSUPP;
14204
14205         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14206                 return -EOPNOTSUPP;
14207
14208         if (wdev_running(wdev))
14209                 return 0;
14210
14211         if (rfkill_blocked(rdev->wiphy.rfkill))
14212                 return -ERFKILL;
14213
14214         err = rdev_start_p2p_device(rdev, wdev);
14215         if (err)
14216                 return err;
14217
14218         wdev->is_running = true;
14219         rdev->opencount++;
14220
14221         return 0;
14222 }
14223
14224 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
14225 {
14226         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14227         struct wireless_dev *wdev = info->user_ptr[1];
14228
14229         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14230                 return -EOPNOTSUPP;
14231
14232         if (!rdev->ops->stop_p2p_device)
14233                 return -EOPNOTSUPP;
14234
14235         cfg80211_stop_p2p_device(rdev, wdev);
14236
14237         return 0;
14238 }
14239
14240 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
14241 {
14242         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14243         struct wireless_dev *wdev = info->user_ptr[1];
14244         struct cfg80211_nan_conf conf = {};
14245         int err;
14246
14247         if (wdev->iftype != NL80211_IFTYPE_NAN)
14248                 return -EOPNOTSUPP;
14249
14250         if (wdev_running(wdev))
14251                 return -EEXIST;
14252
14253         if (rfkill_blocked(rdev->wiphy.rfkill))
14254                 return -ERFKILL;
14255
14256         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14257                 return -EINVAL;
14258
14259         conf.master_pref =
14260                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14261
14262         if (info->attrs[NL80211_ATTR_BANDS]) {
14263                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14264
14265                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14266                         return -EOPNOTSUPP;
14267
14268                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14269                         return -EINVAL;
14270
14271                 conf.bands = bands;
14272         }
14273
14274         err = rdev_start_nan(rdev, wdev, &conf);
14275         if (err)
14276                 return err;
14277
14278         wdev->is_running = true;
14279         rdev->opencount++;
14280
14281         return 0;
14282 }
14283
14284 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14285 {
14286         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14287         struct wireless_dev *wdev = info->user_ptr[1];
14288
14289         if (wdev->iftype != NL80211_IFTYPE_NAN)
14290                 return -EOPNOTSUPP;
14291
14292         cfg80211_stop_nan(rdev, wdev);
14293
14294         return 0;
14295 }
14296
14297 static int validate_nan_filter(struct nlattr *filter_attr)
14298 {
14299         struct nlattr *attr;
14300         int len = 0, n_entries = 0, rem;
14301
14302         nla_for_each_nested(attr, filter_attr, rem) {
14303                 len += nla_len(attr);
14304                 n_entries++;
14305         }
14306
14307         if (len >= U8_MAX)
14308                 return -EINVAL;
14309
14310         return n_entries;
14311 }
14312
14313 static int handle_nan_filter(struct nlattr *attr_filter,
14314                              struct cfg80211_nan_func *func,
14315                              bool tx)
14316 {
14317         struct nlattr *attr;
14318         int n_entries, rem, i;
14319         struct cfg80211_nan_func_filter *filter;
14320
14321         n_entries = validate_nan_filter(attr_filter);
14322         if (n_entries < 0)
14323                 return n_entries;
14324
14325         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14326
14327         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14328         if (!filter)
14329                 return -ENOMEM;
14330
14331         i = 0;
14332         nla_for_each_nested(attr, attr_filter, rem) {
14333                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14334                 if (!filter[i].filter)
14335                         goto err;
14336
14337                 filter[i].len = nla_len(attr);
14338                 i++;
14339         }
14340         if (tx) {
14341                 func->num_tx_filters = n_entries;
14342                 func->tx_filters = filter;
14343         } else {
14344                 func->num_rx_filters = n_entries;
14345                 func->rx_filters = filter;
14346         }
14347
14348         return 0;
14349
14350 err:
14351         i = 0;
14352         nla_for_each_nested(attr, attr_filter, rem) {
14353                 kfree(filter[i].filter);
14354                 i++;
14355         }
14356         kfree(filter);
14357         return -ENOMEM;
14358 }
14359
14360 static int nl80211_nan_add_func(struct sk_buff *skb,
14361                                 struct genl_info *info)
14362 {
14363         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14364         struct wireless_dev *wdev = info->user_ptr[1];
14365         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14366         struct cfg80211_nan_func *func;
14367         struct sk_buff *msg = NULL;
14368         void *hdr = NULL;
14369         int err = 0;
14370
14371         if (wdev->iftype != NL80211_IFTYPE_NAN)
14372                 return -EOPNOTSUPP;
14373
14374         if (!wdev_running(wdev))
14375                 return -ENOTCONN;
14376
14377         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14378                 return -EINVAL;
14379
14380         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14381                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14382                                           nl80211_nan_func_policy,
14383                                           info->extack);
14384         if (err)
14385                 return err;
14386
14387         func = kzalloc(sizeof(*func), GFP_KERNEL);
14388         if (!func)
14389                 return -ENOMEM;
14390
14391         func->cookie = cfg80211_assign_cookie(rdev);
14392
14393         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14394                 err = -EINVAL;
14395                 goto out;
14396         }
14397
14398
14399         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14400
14401         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14402                 err = -EINVAL;
14403                 goto out;
14404         }
14405
14406         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14407                sizeof(func->service_id));
14408
14409         func->close_range =
14410                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14411
14412         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14413                 func->serv_spec_info_len =
14414                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14415                 func->serv_spec_info =
14416                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14417                                 func->serv_spec_info_len,
14418                                 GFP_KERNEL);
14419                 if (!func->serv_spec_info) {
14420                         err = -ENOMEM;
14421                         goto out;
14422                 }
14423         }
14424
14425         if (tb[NL80211_NAN_FUNC_TTL])
14426                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14427
14428         switch (func->type) {
14429         case NL80211_NAN_FUNC_PUBLISH:
14430                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14431                         err = -EINVAL;
14432                         goto out;
14433                 }
14434
14435                 func->publish_type =
14436                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14437                 func->publish_bcast =
14438                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14439
14440                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14441                         func->publish_bcast) {
14442                         err = -EINVAL;
14443                         goto out;
14444                 }
14445                 break;
14446         case NL80211_NAN_FUNC_SUBSCRIBE:
14447                 func->subscribe_active =
14448                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14449                 break;
14450         case NL80211_NAN_FUNC_FOLLOW_UP:
14451                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14452                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14453                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14454                         err = -EINVAL;
14455                         goto out;
14456                 }
14457
14458                 func->followup_id =
14459                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14460                 func->followup_reqid =
14461                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14462                 memcpy(func->followup_dest.addr,
14463                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14464                        sizeof(func->followup_dest.addr));
14465                 if (func->ttl) {
14466                         err = -EINVAL;
14467                         goto out;
14468                 }
14469                 break;
14470         default:
14471                 err = -EINVAL;
14472                 goto out;
14473         }
14474
14475         if (tb[NL80211_NAN_FUNC_SRF]) {
14476                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14477
14478                 err = nla_parse_nested_deprecated(srf_tb,
14479                                                   NL80211_NAN_SRF_ATTR_MAX,
14480                                                   tb[NL80211_NAN_FUNC_SRF],
14481                                                   nl80211_nan_srf_policy,
14482                                                   info->extack);
14483                 if (err)
14484                         goto out;
14485
14486                 func->srf_include =
14487                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14488
14489                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14490                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14491                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14492                                 err = -EINVAL;
14493                                 goto out;
14494                         }
14495
14496                         func->srf_bf_len =
14497                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14498                         func->srf_bf =
14499                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14500                                         func->srf_bf_len, GFP_KERNEL);
14501                         if (!func->srf_bf) {
14502                                 err = -ENOMEM;
14503                                 goto out;
14504                         }
14505
14506                         func->srf_bf_idx =
14507                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14508                 } else {
14509                         struct nlattr *attr, *mac_attr =
14510                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14511                         int n_entries, rem, i = 0;
14512
14513                         if (!mac_attr) {
14514                                 err = -EINVAL;
14515                                 goto out;
14516                         }
14517
14518                         n_entries = validate_acl_mac_addrs(mac_attr);
14519                         if (n_entries <= 0) {
14520                                 err = -EINVAL;
14521                                 goto out;
14522                         }
14523
14524                         func->srf_num_macs = n_entries;
14525                         func->srf_macs =
14526                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14527                                         GFP_KERNEL);
14528                         if (!func->srf_macs) {
14529                                 err = -ENOMEM;
14530                                 goto out;
14531                         }
14532
14533                         nla_for_each_nested(attr, mac_attr, rem)
14534                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14535                                        sizeof(*func->srf_macs));
14536                 }
14537         }
14538
14539         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14540                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14541                                         func, true);
14542                 if (err)
14543                         goto out;
14544         }
14545
14546         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14547                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14548                                         func, false);
14549                 if (err)
14550                         goto out;
14551         }
14552
14553         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14554         if (!msg) {
14555                 err = -ENOMEM;
14556                 goto out;
14557         }
14558
14559         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14560                              NL80211_CMD_ADD_NAN_FUNCTION);
14561         /* This can't really happen - we just allocated 4KB */
14562         if (WARN_ON(!hdr)) {
14563                 err = -ENOMEM;
14564                 goto out;
14565         }
14566
14567         err = rdev_add_nan_func(rdev, wdev, func);
14568 out:
14569         if (err < 0) {
14570                 cfg80211_free_nan_func(func);
14571                 nlmsg_free(msg);
14572                 return err;
14573         }
14574
14575         /* propagate the instance id and cookie to userspace  */
14576         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14577                               NL80211_ATTR_PAD))
14578                 goto nla_put_failure;
14579
14580         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14581         if (!func_attr)
14582                 goto nla_put_failure;
14583
14584         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14585                        func->instance_id))
14586                 goto nla_put_failure;
14587
14588         nla_nest_end(msg, func_attr);
14589
14590         genlmsg_end(msg, hdr);
14591         return genlmsg_reply(msg, info);
14592
14593 nla_put_failure:
14594         nlmsg_free(msg);
14595         return -ENOBUFS;
14596 }
14597
14598 static int nl80211_nan_del_func(struct sk_buff *skb,
14599                                struct genl_info *info)
14600 {
14601         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14602         struct wireless_dev *wdev = info->user_ptr[1];
14603         u64 cookie;
14604
14605         if (wdev->iftype != NL80211_IFTYPE_NAN)
14606                 return -EOPNOTSUPP;
14607
14608         if (!wdev_running(wdev))
14609                 return -ENOTCONN;
14610
14611         if (!info->attrs[NL80211_ATTR_COOKIE])
14612                 return -EINVAL;
14613
14614         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14615
14616         rdev_del_nan_func(rdev, wdev, cookie);
14617
14618         return 0;
14619 }
14620
14621 static int nl80211_nan_change_config(struct sk_buff *skb,
14622                                      struct genl_info *info)
14623 {
14624         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14625         struct wireless_dev *wdev = info->user_ptr[1];
14626         struct cfg80211_nan_conf conf = {};
14627         u32 changed = 0;
14628
14629         if (wdev->iftype != NL80211_IFTYPE_NAN)
14630                 return -EOPNOTSUPP;
14631
14632         if (!wdev_running(wdev))
14633                 return -ENOTCONN;
14634
14635         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14636                 conf.master_pref =
14637                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14638                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14639                         return -EINVAL;
14640
14641                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14642         }
14643
14644         if (info->attrs[NL80211_ATTR_BANDS]) {
14645                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14646
14647                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14648                         return -EOPNOTSUPP;
14649
14650                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14651                         return -EINVAL;
14652
14653                 conf.bands = bands;
14654                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14655         }
14656
14657         if (!changed)
14658                 return -EINVAL;
14659
14660         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14661 }
14662
14663 void cfg80211_nan_match(struct wireless_dev *wdev,
14664                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14665 {
14666         struct wiphy *wiphy = wdev->wiphy;
14667         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14668         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14669         struct sk_buff *msg;
14670         void *hdr;
14671
14672         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14673                 return;
14674
14675         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14676         if (!msg)
14677                 return;
14678
14679         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14680         if (!hdr) {
14681                 nlmsg_free(msg);
14682                 return;
14683         }
14684
14685         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14686             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14687                                          wdev->netdev->ifindex)) ||
14688             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14689                               NL80211_ATTR_PAD))
14690                 goto nla_put_failure;
14691
14692         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14693                               NL80211_ATTR_PAD) ||
14694             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14695                 goto nla_put_failure;
14696
14697         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14698         if (!match_attr)
14699                 goto nla_put_failure;
14700
14701         local_func_attr = nla_nest_start_noflag(msg,
14702                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14703         if (!local_func_attr)
14704                 goto nla_put_failure;
14705
14706         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14707                 goto nla_put_failure;
14708
14709         nla_nest_end(msg, local_func_attr);
14710
14711         peer_func_attr = nla_nest_start_noflag(msg,
14712                                                NL80211_NAN_MATCH_FUNC_PEER);
14713         if (!peer_func_attr)
14714                 goto nla_put_failure;
14715
14716         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14717             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14718                 goto nla_put_failure;
14719
14720         if (match->info && match->info_len &&
14721             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14722                     match->info))
14723                 goto nla_put_failure;
14724
14725         nla_nest_end(msg, peer_func_attr);
14726         nla_nest_end(msg, match_attr);
14727         genlmsg_end(msg, hdr);
14728
14729         if (!wdev->owner_nlportid)
14730                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14731                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14732         else
14733                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14734                                 wdev->owner_nlportid);
14735
14736         return;
14737
14738 nla_put_failure:
14739         nlmsg_free(msg);
14740 }
14741 EXPORT_SYMBOL(cfg80211_nan_match);
14742
14743 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14744                                   u8 inst_id,
14745                                   enum nl80211_nan_func_term_reason reason,
14746                                   u64 cookie, gfp_t gfp)
14747 {
14748         struct wiphy *wiphy = wdev->wiphy;
14749         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14750         struct sk_buff *msg;
14751         struct nlattr *func_attr;
14752         void *hdr;
14753
14754         if (WARN_ON(!inst_id))
14755                 return;
14756
14757         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14758         if (!msg)
14759                 return;
14760
14761         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14762         if (!hdr) {
14763                 nlmsg_free(msg);
14764                 return;
14765         }
14766
14767         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14768             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14769                                          wdev->netdev->ifindex)) ||
14770             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14771                               NL80211_ATTR_PAD))
14772                 goto nla_put_failure;
14773
14774         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14775                               NL80211_ATTR_PAD))
14776                 goto nla_put_failure;
14777
14778         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14779         if (!func_attr)
14780                 goto nla_put_failure;
14781
14782         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14783             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14784                 goto nla_put_failure;
14785
14786         nla_nest_end(msg, func_attr);
14787         genlmsg_end(msg, hdr);
14788
14789         if (!wdev->owner_nlportid)
14790                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14791                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14792         else
14793                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14794                                 wdev->owner_nlportid);
14795
14796         return;
14797
14798 nla_put_failure:
14799         nlmsg_free(msg);
14800 }
14801 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14802
14803 static int nl80211_get_protocol_features(struct sk_buff *skb,
14804                                          struct genl_info *info)
14805 {
14806         void *hdr;
14807         struct sk_buff *msg;
14808
14809         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14810         if (!msg)
14811                 return -ENOMEM;
14812
14813         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14814                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14815         if (!hdr)
14816                 goto nla_put_failure;
14817
14818         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14819                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14820                 goto nla_put_failure;
14821
14822         genlmsg_end(msg, hdr);
14823         return genlmsg_reply(msg, info);
14824
14825  nla_put_failure:
14826         kfree_skb(msg);
14827         return -ENOBUFS;
14828 }
14829
14830 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14831 {
14832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14833         struct cfg80211_update_ft_ies_params ft_params;
14834         struct net_device *dev = info->user_ptr[1];
14835
14836         if (!rdev->ops->update_ft_ies)
14837                 return -EOPNOTSUPP;
14838
14839         if (!info->attrs[NL80211_ATTR_MDID] ||
14840             !info->attrs[NL80211_ATTR_IE])
14841                 return -EINVAL;
14842
14843         memset(&ft_params, 0, sizeof(ft_params));
14844         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14845         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14846         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14847
14848         return rdev_update_ft_ies(rdev, dev, &ft_params);
14849 }
14850
14851 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14852                                        struct genl_info *info)
14853 {
14854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14855         struct wireless_dev *wdev = info->user_ptr[1];
14856         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14857         u16 duration;
14858         int ret;
14859
14860         if (!rdev->ops->crit_proto_start)
14861                 return -EOPNOTSUPP;
14862
14863         if (WARN_ON(!rdev->ops->crit_proto_stop))
14864                 return -EINVAL;
14865
14866         if (rdev->crit_proto_nlportid)
14867                 return -EBUSY;
14868
14869         /* determine protocol if provided */
14870         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14871                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14872
14873         if (proto >= NUM_NL80211_CRIT_PROTO)
14874                 return -EINVAL;
14875
14876         /* timeout must be provided */
14877         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14878                 return -EINVAL;
14879
14880         duration =
14881                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14882
14883         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14884         if (!ret)
14885                 rdev->crit_proto_nlportid = info->snd_portid;
14886
14887         return ret;
14888 }
14889
14890 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14891                                       struct genl_info *info)
14892 {
14893         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14894         struct wireless_dev *wdev = info->user_ptr[1];
14895
14896         if (!rdev->ops->crit_proto_stop)
14897                 return -EOPNOTSUPP;
14898
14899         if (rdev->crit_proto_nlportid) {
14900                 rdev->crit_proto_nlportid = 0;
14901                 rdev_crit_proto_stop(rdev, wdev);
14902         }
14903         return 0;
14904 }
14905
14906 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14907                                        struct nlattr *attr,
14908                                        struct netlink_ext_ack *extack)
14909 {
14910         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14911                 if (attr->nla_type & NLA_F_NESTED) {
14912                         NL_SET_ERR_MSG_ATTR(extack, attr,
14913                                             "unexpected nested data");
14914                         return -EINVAL;
14915                 }
14916
14917                 return 0;
14918         }
14919
14920         if (!(attr->nla_type & NLA_F_NESTED)) {
14921                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14922                 return -EINVAL;
14923         }
14924
14925         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14926 }
14927
14928 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14929 {
14930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14931         struct wireless_dev *wdev =
14932                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14933                                            info->attrs);
14934         int i, err;
14935         u32 vid, subcmd;
14936
14937         if (!rdev->wiphy.vendor_commands)
14938                 return -EOPNOTSUPP;
14939
14940         if (IS_ERR(wdev)) {
14941                 err = PTR_ERR(wdev);
14942                 if (err != -EINVAL)
14943                         return err;
14944                 wdev = NULL;
14945         } else if (wdev->wiphy != &rdev->wiphy) {
14946                 return -EINVAL;
14947         }
14948
14949         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
14950             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
14951                 return -EINVAL;
14952
14953         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
14954         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
14955         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
14956                 const struct wiphy_vendor_command *vcmd;
14957                 void *data = NULL;
14958                 int len = 0;
14959
14960                 vcmd = &rdev->wiphy.vendor_commands[i];
14961
14962                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14963                         continue;
14964
14965                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14966                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14967                         if (!wdev)
14968                                 return -EINVAL;
14969                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14970                             !wdev->netdev)
14971                                 return -EINVAL;
14972
14973                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14974                                 if (!wdev_running(wdev))
14975                                         return -ENETDOWN;
14976                         }
14977                 } else {
14978                         wdev = NULL;
14979                 }
14980
14981                 if (!vcmd->doit)
14982                         return -EOPNOTSUPP;
14983
14984                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
14985                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14986                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14987
14988                         err = nl80211_vendor_check_policy(vcmd,
14989                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
14990                                         info->extack);
14991                         if (err)
14992                                 return err;
14993                 }
14994
14995                 rdev->cur_cmd_info = info;
14996                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
14997                 rdev->cur_cmd_info = NULL;
14998                 return err;
14999         }
15000
15001         return -EOPNOTSUPP;
15002 }
15003
15004 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
15005                                        struct netlink_callback *cb,
15006                                        struct cfg80211_registered_device **rdev,
15007                                        struct wireless_dev **wdev)
15008 {
15009         struct nlattr **attrbuf;
15010         u32 vid, subcmd;
15011         unsigned int i;
15012         int vcmd_idx = -1;
15013         int err;
15014         void *data = NULL;
15015         unsigned int data_len = 0;
15016
15017         if (cb->args[0]) {
15018                 /* subtract the 1 again here */
15019                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
15020                 struct wireless_dev *tmp;
15021
15022                 if (!wiphy)
15023                         return -ENODEV;
15024                 *rdev = wiphy_to_rdev(wiphy);
15025                 *wdev = NULL;
15026
15027                 if (cb->args[1]) {
15028                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
15029                                 if (tmp->identifier == cb->args[1] - 1) {
15030                                         *wdev = tmp;
15031                                         break;
15032                                 }
15033                         }
15034                 }
15035
15036                 /* keep rtnl locked in successful case */
15037                 return 0;
15038         }
15039
15040         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
15041         if (!attrbuf)
15042                 return -ENOMEM;
15043
15044         err = nlmsg_parse_deprecated(cb->nlh,
15045                                      GENL_HDRLEN + nl80211_fam.hdrsize,
15046                                      attrbuf, nl80211_fam.maxattr,
15047                                      nl80211_policy, NULL);
15048         if (err)
15049                 goto out;
15050
15051         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
15052             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
15053                 err = -EINVAL;
15054                 goto out;
15055         }
15056
15057         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
15058         if (IS_ERR(*wdev))
15059                 *wdev = NULL;
15060
15061         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
15062         if (IS_ERR(*rdev)) {
15063                 err = PTR_ERR(*rdev);
15064                 goto out;
15065         }
15066
15067         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
15068         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
15069
15070         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
15071                 const struct wiphy_vendor_command *vcmd;
15072
15073                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
15074
15075                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15076                         continue;
15077
15078                 if (!vcmd->dumpit) {
15079                         err = -EOPNOTSUPP;
15080                         goto out;
15081                 }
15082
15083                 vcmd_idx = i;
15084                 break;
15085         }
15086
15087         if (vcmd_idx < 0) {
15088                 err = -EOPNOTSUPP;
15089                 goto out;
15090         }
15091
15092         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
15093                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15094                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15095
15096                 err = nl80211_vendor_check_policy(
15097                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
15098                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
15099                                 cb->extack);
15100                 if (err)
15101                         goto out;
15102         }
15103
15104         /* 0 is the first index - add 1 to parse only once */
15105         cb->args[0] = (*rdev)->wiphy_idx + 1;
15106         /* add 1 to know if it was NULL */
15107         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
15108         cb->args[2] = vcmd_idx;
15109         cb->args[3] = (unsigned long)data;
15110         cb->args[4] = data_len;
15111
15112         /* keep rtnl locked in successful case */
15113         err = 0;
15114 out:
15115         kfree(attrbuf);
15116         return err;
15117 }
15118
15119 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
15120                                    struct netlink_callback *cb)
15121 {
15122         struct cfg80211_registered_device *rdev;
15123         struct wireless_dev *wdev;
15124         unsigned int vcmd_idx;
15125         const struct wiphy_vendor_command *vcmd;
15126         void *data;
15127         int data_len;
15128         int err;
15129         struct nlattr *vendor_data;
15130
15131         rtnl_lock();
15132         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
15133         if (err)
15134                 goto out;
15135
15136         vcmd_idx = cb->args[2];
15137         data = (void *)cb->args[3];
15138         data_len = cb->args[4];
15139         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
15140
15141         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15142                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15143                 if (!wdev) {
15144                         err = -EINVAL;
15145                         goto out;
15146                 }
15147                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15148                     !wdev->netdev) {
15149                         err = -EINVAL;
15150                         goto out;
15151                 }
15152
15153                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15154                         if (!wdev_running(wdev)) {
15155                                 err = -ENETDOWN;
15156                                 goto out;
15157                         }
15158                 }
15159         }
15160
15161         while (1) {
15162                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
15163                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
15164                                            NL80211_CMD_VENDOR);
15165                 if (!hdr)
15166                         break;
15167
15168                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15169                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
15170                                                wdev_id(wdev),
15171                                                NL80211_ATTR_PAD))) {
15172                         genlmsg_cancel(skb, hdr);
15173                         break;
15174                 }
15175
15176                 vendor_data = nla_nest_start_noflag(skb,
15177                                                     NL80211_ATTR_VENDOR_DATA);
15178                 if (!vendor_data) {
15179                         genlmsg_cancel(skb, hdr);
15180                         break;
15181                 }
15182
15183                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
15184                                    (unsigned long *)&cb->args[5]);
15185                 nla_nest_end(skb, vendor_data);
15186
15187                 if (err == -ENOBUFS || err == -ENOENT) {
15188                         genlmsg_cancel(skb, hdr);
15189                         break;
15190                 } else if (err <= 0) {
15191                         genlmsg_cancel(skb, hdr);
15192                         goto out;
15193                 }
15194
15195                 genlmsg_end(skb, hdr);
15196         }
15197
15198         err = skb->len;
15199  out:
15200         rtnl_unlock();
15201         return err;
15202 }
15203
15204 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
15205                                            enum nl80211_commands cmd,
15206                                            enum nl80211_attrs attr,
15207                                            int approxlen)
15208 {
15209         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15210
15211         if (WARN_ON(!rdev->cur_cmd_info))
15212                 return NULL;
15213
15214         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
15215                                            rdev->cur_cmd_info->snd_portid,
15216                                            rdev->cur_cmd_info->snd_seq,
15217                                            cmd, attr, NULL, GFP_KERNEL);
15218 }
15219 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
15220
15221 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
15222 {
15223         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
15224         void *hdr = ((void **)skb->cb)[1];
15225         struct nlattr *data = ((void **)skb->cb)[2];
15226
15227         /* clear CB data for netlink core to own from now on */
15228         memset(skb->cb, 0, sizeof(skb->cb));
15229
15230         if (WARN_ON(!rdev->cur_cmd_info)) {
15231                 kfree_skb(skb);
15232                 return -EINVAL;
15233         }
15234
15235         nla_nest_end(skb, data);
15236         genlmsg_end(skb, hdr);
15237         return genlmsg_reply(skb, rdev->cur_cmd_info);
15238 }
15239 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
15240
15241 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
15242 {
15243         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15244
15245         if (WARN_ON(!rdev->cur_cmd_info))
15246                 return 0;
15247
15248         return rdev->cur_cmd_info->snd_portid;
15249 }
15250 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
15251
15252 static int nl80211_set_qos_map(struct sk_buff *skb,
15253                                struct genl_info *info)
15254 {
15255         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15256         struct cfg80211_qos_map *qos_map = NULL;
15257         struct net_device *dev = info->user_ptr[1];
15258         u8 *pos, len, num_des, des_len, des;
15259         int ret;
15260
15261         if (!rdev->ops->set_qos_map)
15262                 return -EOPNOTSUPP;
15263
15264         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15265                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15266                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15267
15268                 if (len % 2)
15269                         return -EINVAL;
15270
15271                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15272                 if (!qos_map)
15273                         return -ENOMEM;
15274
15275                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15276                 if (num_des) {
15277                         des_len = num_des *
15278                                 sizeof(struct cfg80211_dscp_exception);
15279                         memcpy(qos_map->dscp_exception, pos, des_len);
15280                         qos_map->num_des = num_des;
15281                         for (des = 0; des < num_des; des++) {
15282                                 if (qos_map->dscp_exception[des].up > 7) {
15283                                         kfree(qos_map);
15284                                         return -EINVAL;
15285                                 }
15286                         }
15287                         pos += des_len;
15288                 }
15289                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15290         }
15291
15292         ret = nl80211_key_allowed(dev->ieee80211_ptr);
15293         if (!ret)
15294                 ret = rdev_set_qos_map(rdev, dev, qos_map);
15295
15296         kfree(qos_map);
15297         return ret;
15298 }
15299
15300 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15301 {
15302         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15303         struct net_device *dev = info->user_ptr[1];
15304         struct wireless_dev *wdev = dev->ieee80211_ptr;
15305         const u8 *peer;
15306         u8 tsid, up;
15307         u16 admitted_time = 0;
15308
15309         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15310                 return -EOPNOTSUPP;
15311
15312         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15313             !info->attrs[NL80211_ATTR_USER_PRIO])
15314                 return -EINVAL;
15315
15316         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15317         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15318
15319         /* WMM uses TIDs 0-7 even for TSPEC */
15320         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15321                 /* TODO: handle 802.11 TSPEC/admission control
15322                  * need more attributes for that (e.g. BA session requirement);
15323                  * change the WMM adminssion test above to allow both then
15324                  */
15325                 return -EINVAL;
15326         }
15327
15328         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15329
15330         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15331                 admitted_time =
15332                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15333                 if (!admitted_time)
15334                         return -EINVAL;
15335         }
15336
15337         switch (wdev->iftype) {
15338         case NL80211_IFTYPE_STATION:
15339         case NL80211_IFTYPE_P2P_CLIENT:
15340                 if (wdev->connected)
15341                         break;
15342                 return -ENOTCONN;
15343         default:
15344                 return -EOPNOTSUPP;
15345         }
15346
15347         return rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15348 }
15349
15350 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15351 {
15352         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15353         struct net_device *dev = info->user_ptr[1];
15354         const u8 *peer;
15355         u8 tsid;
15356
15357         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15358                 return -EINVAL;
15359
15360         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15361         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15362
15363         return rdev_del_tx_ts(rdev, dev, tsid, peer);
15364 }
15365
15366 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15367                                        struct genl_info *info)
15368 {
15369         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15370         struct net_device *dev = info->user_ptr[1];
15371         struct wireless_dev *wdev = dev->ieee80211_ptr;
15372         struct cfg80211_chan_def chandef = {};
15373         const u8 *addr;
15374         u8 oper_class;
15375         int err;
15376
15377         if (!rdev->ops->tdls_channel_switch ||
15378             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15379                 return -EOPNOTSUPP;
15380
15381         switch (dev->ieee80211_ptr->iftype) {
15382         case NL80211_IFTYPE_STATION:
15383         case NL80211_IFTYPE_P2P_CLIENT:
15384                 break;
15385         default:
15386                 return -EOPNOTSUPP;
15387         }
15388
15389         if (!info->attrs[NL80211_ATTR_MAC] ||
15390             !info->attrs[NL80211_ATTR_OPER_CLASS])
15391                 return -EINVAL;
15392
15393         err = nl80211_parse_chandef(rdev, info, &chandef);
15394         if (err)
15395                 return err;
15396
15397         /*
15398          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15399          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15400          * specification is not defined for them.
15401          */
15402         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15403             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15404             chandef.width != NL80211_CHAN_WIDTH_20)
15405                 return -EINVAL;
15406
15407         /* we will be active on the TDLS link */
15408         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15409                                            wdev->iftype))
15410                 return -EINVAL;
15411
15412         /* don't allow switching to DFS channels */
15413         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15414                 return -EINVAL;
15415
15416         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15417         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15418
15419         return rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15420 }
15421
15422 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15423                                               struct genl_info *info)
15424 {
15425         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15426         struct net_device *dev = info->user_ptr[1];
15427         const u8 *addr;
15428
15429         if (!rdev->ops->tdls_channel_switch ||
15430             !rdev->ops->tdls_cancel_channel_switch ||
15431             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15432                 return -EOPNOTSUPP;
15433
15434         switch (dev->ieee80211_ptr->iftype) {
15435         case NL80211_IFTYPE_STATION:
15436         case NL80211_IFTYPE_P2P_CLIENT:
15437                 break;
15438         default:
15439                 return -EOPNOTSUPP;
15440         }
15441
15442         if (!info->attrs[NL80211_ATTR_MAC])
15443                 return -EINVAL;
15444
15445         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15446
15447         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15448
15449         return 0;
15450 }
15451
15452 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15453                                             struct genl_info *info)
15454 {
15455         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15456         struct net_device *dev = info->user_ptr[1];
15457         struct wireless_dev *wdev = dev->ieee80211_ptr;
15458         const struct nlattr *nla;
15459         bool enabled;
15460
15461         if (!rdev->ops->set_multicast_to_unicast)
15462                 return -EOPNOTSUPP;
15463
15464         if (wdev->iftype != NL80211_IFTYPE_AP &&
15465             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15466                 return -EOPNOTSUPP;
15467
15468         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15469         enabled = nla_get_flag(nla);
15470
15471         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15472 }
15473
15474 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15475 {
15476         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15477         struct net_device *dev = info->user_ptr[1];
15478         struct wireless_dev *wdev = dev->ieee80211_ptr;
15479         struct cfg80211_pmk_conf pmk_conf = {};
15480
15481         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15482             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15483                 return -EOPNOTSUPP;
15484
15485         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15486                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15487                 return -EOPNOTSUPP;
15488
15489         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15490                 return -EINVAL;
15491
15492         if (!wdev->connected)
15493                 return -ENOTCONN;
15494
15495         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15496         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN))
15497                 return -EINVAL;
15498
15499         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15500         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15501         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15502             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192)
15503                 return -EINVAL;
15504
15505         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15506                 pmk_conf.pmk_r0_name =
15507                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15508
15509         return rdev_set_pmk(rdev, dev, &pmk_conf);
15510 }
15511
15512 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15513 {
15514         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15515         struct net_device *dev = info->user_ptr[1];
15516         struct wireless_dev *wdev = dev->ieee80211_ptr;
15517         const u8 *aa;
15518
15519         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15520             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15521                 return -EOPNOTSUPP;
15522
15523         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15524                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15525                 return -EOPNOTSUPP;
15526
15527         if (!info->attrs[NL80211_ATTR_MAC])
15528                 return -EINVAL;
15529
15530         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15531         return rdev_del_pmk(rdev, dev, aa);
15532 }
15533
15534 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15535 {
15536         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15537         struct net_device *dev = info->user_ptr[1];
15538         struct cfg80211_external_auth_params params;
15539
15540         if (!rdev->ops->external_auth)
15541                 return -EOPNOTSUPP;
15542
15543         if (!info->attrs[NL80211_ATTR_SSID] &&
15544             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15545             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15546                 return -EINVAL;
15547
15548         if (!info->attrs[NL80211_ATTR_BSSID])
15549                 return -EINVAL;
15550
15551         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15552                 return -EINVAL;
15553
15554         memset(&params, 0, sizeof(params));
15555
15556         if (info->attrs[NL80211_ATTR_SSID]) {
15557                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15558                 if (params.ssid.ssid_len == 0)
15559                         return -EINVAL;
15560                 memcpy(params.ssid.ssid,
15561                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15562                        params.ssid.ssid_len);
15563         }
15564
15565         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15566                ETH_ALEN);
15567
15568         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15569
15570         if (info->attrs[NL80211_ATTR_PMKID])
15571                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15572
15573         return rdev_external_auth(rdev, dev, &params);
15574 }
15575
15576 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15577 {
15578         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15579         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15580         struct net_device *dev = info->user_ptr[1];
15581         struct wireless_dev *wdev = dev->ieee80211_ptr;
15582         const u8 *buf;
15583         size_t len;
15584         u8 *dest;
15585         u16 proto;
15586         bool noencrypt;
15587         u64 cookie = 0;
15588         int link_id;
15589         int err;
15590
15591         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15592                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15593                 return -EOPNOTSUPP;
15594
15595         if (!rdev->ops->tx_control_port)
15596                 return -EOPNOTSUPP;
15597
15598         if (!info->attrs[NL80211_ATTR_FRAME] ||
15599             !info->attrs[NL80211_ATTR_MAC] ||
15600             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15601                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15602                 return -EINVAL;
15603         }
15604
15605         switch (wdev->iftype) {
15606         case NL80211_IFTYPE_AP:
15607         case NL80211_IFTYPE_P2P_GO:
15608         case NL80211_IFTYPE_MESH_POINT:
15609                 break;
15610         case NL80211_IFTYPE_ADHOC:
15611                 if (wdev->u.ibss.current_bss)
15612                         break;
15613                 return -ENOTCONN;
15614         case NL80211_IFTYPE_STATION:
15615         case NL80211_IFTYPE_P2P_CLIENT:
15616                 if (wdev->connected)
15617                         break;
15618                 return -ENOTCONN;
15619         default:
15620                 return -EOPNOTSUPP;
15621         }
15622
15623         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15624         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15625         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15626         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15627         noencrypt =
15628                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15629
15630         link_id = nl80211_link_id_or_invalid(info->attrs);
15631
15632         err = rdev_tx_control_port(rdev, dev, buf, len,
15633                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15634                                    dont_wait_for_ack ? NULL : &cookie);
15635         if (!err && !dont_wait_for_ack)
15636                 nl_set_extack_cookie_u64(info->extack, cookie);
15637         return err;
15638 }
15639
15640 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15641                                            struct genl_info *info)
15642 {
15643         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15644         struct net_device *dev = info->user_ptr[1];
15645         struct wireless_dev *wdev = dev->ieee80211_ptr;
15646         struct cfg80211_ftm_responder_stats ftm_stats = {};
15647         unsigned int link_id = nl80211_link_id(info->attrs);
15648         struct sk_buff *msg;
15649         void *hdr;
15650         struct nlattr *ftm_stats_attr;
15651         int err;
15652
15653         if (wdev->iftype != NL80211_IFTYPE_AP ||
15654             !wdev->links[link_id].ap.beacon_interval)
15655                 return -EOPNOTSUPP;
15656
15657         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15658         if (err)
15659                 return err;
15660
15661         if (!ftm_stats.filled)
15662                 return -ENODATA;
15663
15664         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15665         if (!msg)
15666                 return -ENOMEM;
15667
15668         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15669                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15670         if (!hdr)
15671                 goto nla_put_failure;
15672
15673         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15674                 goto nla_put_failure;
15675
15676         ftm_stats_attr = nla_nest_start_noflag(msg,
15677                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15678         if (!ftm_stats_attr)
15679                 goto nla_put_failure;
15680
15681 #define SET_FTM(field, name, type)                                       \
15682         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15683             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15684                              ftm_stats.field))                           \
15685                 goto nla_put_failure; } while (0)
15686 #define SET_FTM_U64(field, name)                                         \
15687         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15688             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15689                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15690                 goto nla_put_failure; } while (0)
15691
15692         SET_FTM(success_num, SUCCESS_NUM, u32);
15693         SET_FTM(partial_num, PARTIAL_NUM, u32);
15694         SET_FTM(failed_num, FAILED_NUM, u32);
15695         SET_FTM(asap_num, ASAP_NUM, u32);
15696         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15697         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15698         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15699         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15700         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15701 #undef SET_FTM
15702
15703         nla_nest_end(msg, ftm_stats_attr);
15704
15705         genlmsg_end(msg, hdr);
15706         return genlmsg_reply(msg, info);
15707
15708 nla_put_failure:
15709         nlmsg_free(msg);
15710         return -ENOBUFS;
15711 }
15712
15713 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15714 {
15715         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15716         struct cfg80211_update_owe_info owe_info;
15717         struct net_device *dev = info->user_ptr[1];
15718
15719         if (!rdev->ops->update_owe_info)
15720                 return -EOPNOTSUPP;
15721
15722         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15723             !info->attrs[NL80211_ATTR_MAC])
15724                 return -EINVAL;
15725
15726         memset(&owe_info, 0, sizeof(owe_info));
15727         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15728         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15729
15730         if (info->attrs[NL80211_ATTR_IE]) {
15731                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15732                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15733         }
15734
15735         return rdev_update_owe_info(rdev, dev, &owe_info);
15736 }
15737
15738 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15739 {
15740         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15741         struct net_device *dev = info->user_ptr[1];
15742         struct wireless_dev *wdev = dev->ieee80211_ptr;
15743         struct station_info sinfo = {};
15744         const u8 *buf;
15745         size_t len;
15746         u8 *dest;
15747         int err;
15748
15749         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15750                 return -EOPNOTSUPP;
15751
15752         if (!info->attrs[NL80211_ATTR_MAC] ||
15753             !info->attrs[NL80211_ATTR_FRAME]) {
15754                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15755                 return -EINVAL;
15756         }
15757
15758         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15759                 return -EOPNOTSUPP;
15760
15761         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15762         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15763         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15764
15765         if (len < sizeof(struct ethhdr))
15766                 return -EINVAL;
15767
15768         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15769             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15770                 return -EINVAL;
15771
15772         err = rdev_get_station(rdev, dev, dest, &sinfo);
15773         if (err)
15774                 return err;
15775
15776         cfg80211_sinfo_release_content(&sinfo);
15777
15778         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15779 }
15780
15781 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15782                           struct nlattr *attrs[], struct net_device *dev,
15783                           struct cfg80211_tid_cfg *tid_conf,
15784                           struct genl_info *info, const u8 *peer,
15785                           unsigned int link_id)
15786 {
15787         struct netlink_ext_ack *extack = info->extack;
15788         u64 mask;
15789         int err;
15790
15791         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15792                 return -EINVAL;
15793
15794         tid_conf->config_override =
15795                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15796         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15797
15798         if (tid_conf->config_override) {
15799                 if (rdev->ops->reset_tid_config) {
15800                         err = rdev_reset_tid_config(rdev, dev, peer,
15801                                                     tid_conf->tids);
15802                         if (err)
15803                                 return err;
15804                 } else {
15805                         return -EINVAL;
15806                 }
15807         }
15808
15809         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15810                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15811                 tid_conf->noack =
15812                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15813         }
15814
15815         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15816                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15817                 tid_conf->retry_short =
15818                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15819
15820                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15821                         return -EINVAL;
15822         }
15823
15824         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15825                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15826                 tid_conf->retry_long =
15827                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15828
15829                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15830                         return -EINVAL;
15831         }
15832
15833         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15834                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15835                 tid_conf->ampdu =
15836                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15837         }
15838
15839         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15840                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15841                 tid_conf->rtscts =
15842                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15843         }
15844
15845         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15846                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15847                 tid_conf->amsdu =
15848                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15849         }
15850
15851         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15852                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15853
15854                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15855
15856                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15857                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15858                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15859                                                     &tid_conf->txrate_mask, dev,
15860                                                     true, link_id);
15861                         if (err)
15862                                 return err;
15863
15864                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15865                 }
15866                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15867         }
15868
15869         if (peer)
15870                 mask = rdev->wiphy.tid_config_support.peer;
15871         else
15872                 mask = rdev->wiphy.tid_config_support.vif;
15873
15874         if (tid_conf->mask & ~mask) {
15875                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15876                 return -EOPNOTSUPP;
15877         }
15878
15879         return 0;
15880 }
15881
15882 static int nl80211_set_tid_config(struct sk_buff *skb,
15883                                   struct genl_info *info)
15884 {
15885         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15886         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15887         unsigned int link_id = nl80211_link_id(info->attrs);
15888         struct net_device *dev = info->user_ptr[1];
15889         struct cfg80211_tid_config *tid_config;
15890         struct nlattr *tid;
15891         int conf_idx = 0, rem_conf;
15892         int ret = -EINVAL;
15893         u32 num_conf = 0;
15894
15895         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15896                 return -EINVAL;
15897
15898         if (!rdev->ops->set_tid_config)
15899                 return -EOPNOTSUPP;
15900
15901         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15902                             rem_conf)
15903                 num_conf++;
15904
15905         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15906                              GFP_KERNEL);
15907         if (!tid_config)
15908                 return -ENOMEM;
15909
15910         tid_config->n_tid_conf = num_conf;
15911
15912         if (info->attrs[NL80211_ATTR_MAC])
15913                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15914
15915         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15916                             rem_conf) {
15917                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15918                                        tid, NULL, NULL);
15919
15920                 if (ret)
15921                         goto bad_tid_conf;
15922
15923                 ret = parse_tid_conf(rdev, attrs, dev,
15924                                      &tid_config->tid_conf[conf_idx],
15925                                      info, tid_config->peer, link_id);
15926                 if (ret)
15927                         goto bad_tid_conf;
15928
15929                 conf_idx++;
15930         }
15931
15932         ret = rdev_set_tid_config(rdev, dev, tid_config);
15933
15934 bad_tid_conf:
15935         kfree(tid_config);
15936         return ret;
15937 }
15938
15939 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
15940 {
15941         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15942         struct cfg80211_color_change_settings params = {};
15943         struct net_device *dev = info->user_ptr[1];
15944         struct wireless_dev *wdev = dev->ieee80211_ptr;
15945         struct nlattr **tb;
15946         u16 offset;
15947         int err;
15948
15949         if (!rdev->ops->color_change)
15950                 return -EOPNOTSUPP;
15951
15952         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15953                                      NL80211_EXT_FEATURE_BSS_COLOR))
15954                 return -EOPNOTSUPP;
15955
15956         if (wdev->iftype != NL80211_IFTYPE_AP)
15957                 return -EOPNOTSUPP;
15958
15959         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
15960             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
15961             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
15962                 return -EINVAL;
15963
15964         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
15965         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
15966
15967         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next,
15968                                    info->extack);
15969         if (err)
15970                 return err;
15971
15972         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
15973         if (!tb)
15974                 return -ENOMEM;
15975
15976         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
15977                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
15978                                nl80211_policy, info->extack);
15979         if (err)
15980                 goto out;
15981
15982         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change,
15983                                    info->extack);
15984         if (err)
15985                 goto out;
15986
15987         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
15988                 err = -EINVAL;
15989                 goto out;
15990         }
15991
15992         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
15993                 err = -EINVAL;
15994                 goto out;
15995         }
15996
15997         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
15998         if (offset >= params.beacon_color_change.tail_len) {
15999                 err = -EINVAL;
16000                 goto out;
16001         }
16002
16003         if (params.beacon_color_change.tail[offset] != params.count) {
16004                 err = -EINVAL;
16005                 goto out;
16006         }
16007
16008         params.counter_offset_beacon = offset;
16009
16010         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
16011                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
16012                     sizeof(u16)) {
16013                         err = -EINVAL;
16014                         goto out;
16015                 }
16016
16017                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
16018                 if (offset >= params.beacon_color_change.probe_resp_len) {
16019                         err = -EINVAL;
16020                         goto out;
16021                 }
16022
16023                 if (params.beacon_color_change.probe_resp[offset] !=
16024                     params.count) {
16025                         err = -EINVAL;
16026                         goto out;
16027                 }
16028
16029                 params.counter_offset_presp = offset;
16030         }
16031
16032         err = rdev_color_change(rdev, dev, &params);
16033
16034 out:
16035         kfree(params.beacon_next.mbssid_ies);
16036         kfree(params.beacon_color_change.mbssid_ies);
16037         kfree(params.beacon_next.rnr_ies);
16038         kfree(params.beacon_color_change.rnr_ies);
16039         kfree(tb);
16040         return err;
16041 }
16042
16043 static int nl80211_set_fils_aad(struct sk_buff *skb,
16044                                 struct genl_info *info)
16045 {
16046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16047         struct net_device *dev = info->user_ptr[1];
16048         struct cfg80211_fils_aad fils_aad = {};
16049         u8 *nonces;
16050
16051         if (!info->attrs[NL80211_ATTR_MAC] ||
16052             !info->attrs[NL80211_ATTR_FILS_KEK] ||
16053             !info->attrs[NL80211_ATTR_FILS_NONCES])
16054                 return -EINVAL;
16055
16056         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16057         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
16058         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
16059         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
16060         fils_aad.snonce = nonces;
16061         fils_aad.anonce = nonces + FILS_NONCE_LEN;
16062
16063         return rdev_set_fils_aad(rdev, dev, &fils_aad);
16064 }
16065
16066 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
16067 {
16068         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16069         unsigned int link_id = nl80211_link_id(info->attrs);
16070         struct net_device *dev = info->user_ptr[1];
16071         struct wireless_dev *wdev = dev->ieee80211_ptr;
16072         int ret;
16073
16074         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
16075                 return -EINVAL;
16076
16077         switch (wdev->iftype) {
16078         case NL80211_IFTYPE_AP:
16079                 break;
16080         default:
16081                 return -EINVAL;
16082         }
16083
16084         if (!info->attrs[NL80211_ATTR_MAC] ||
16085             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
16086                 return -EINVAL;
16087
16088         wdev->valid_links |= BIT(link_id);
16089         ether_addr_copy(wdev->links[link_id].addr,
16090                         nla_data(info->attrs[NL80211_ATTR_MAC]));
16091
16092         ret = rdev_add_intf_link(rdev, wdev, link_id);
16093         if (ret) {
16094                 wdev->valid_links &= ~BIT(link_id);
16095                 eth_zero_addr(wdev->links[link_id].addr);
16096         }
16097
16098         return ret;
16099 }
16100
16101 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
16102 {
16103         unsigned int link_id = nl80211_link_id(info->attrs);
16104         struct net_device *dev = info->user_ptr[1];
16105         struct wireless_dev *wdev = dev->ieee80211_ptr;
16106
16107         /* cannot remove if there's no link */
16108         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16109                 return -EINVAL;
16110
16111         switch (wdev->iftype) {
16112         case NL80211_IFTYPE_AP:
16113                 break;
16114         default:
16115                 return -EINVAL;
16116         }
16117
16118         cfg80211_remove_link(wdev, link_id);
16119
16120         return 0;
16121 }
16122
16123 static int
16124 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
16125                              bool add)
16126 {
16127         struct link_station_parameters params = {};
16128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16129         struct net_device *dev = info->user_ptr[1];
16130         int err;
16131
16132         if ((add && !rdev->ops->add_link_station) ||
16133             (!add && !rdev->ops->mod_link_station))
16134                 return -EOPNOTSUPP;
16135
16136         if (add && !info->attrs[NL80211_ATTR_MAC])
16137                 return -EINVAL;
16138
16139         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
16140                 return -EINVAL;
16141
16142         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
16143                 return -EINVAL;
16144
16145         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16146
16147         if (info->attrs[NL80211_ATTR_MAC]) {
16148                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
16149                 if (!is_valid_ether_addr(params.link_mac))
16150                         return -EINVAL;
16151         }
16152
16153         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16154                 return -EINVAL;
16155
16156         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16157
16158         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
16159                 params.supported_rates =
16160                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16161                 params.supported_rates_len =
16162                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16163         }
16164
16165         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
16166                 params.ht_capa =
16167                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
16168
16169         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
16170                 params.vht_capa =
16171                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
16172
16173         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
16174                 params.he_capa =
16175                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16176                 params.he_capa_len =
16177                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16178
16179                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
16180                         params.eht_capa =
16181                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16182                         params.eht_capa_len =
16183                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16184
16185                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
16186                                                         (const u8 *)params.eht_capa,
16187                                                         params.eht_capa_len,
16188                                                         false))
16189                                 return -EINVAL;
16190                 }
16191         }
16192
16193         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
16194                 params.he_6ghz_capa =
16195                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
16196
16197         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
16198                 params.opmode_notif_used = true;
16199                 params.opmode_notif =
16200                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16201         }
16202
16203         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
16204                                                 &params.txpwr_set);
16205         if (err)
16206                 return err;
16207
16208         if (add)
16209                 return rdev_add_link_station(rdev, dev, &params);
16210
16211         return rdev_mod_link_station(rdev, dev, &params);
16212 }
16213
16214 static int
16215 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16216 {
16217         return nl80211_add_mod_link_station(skb, info, true);
16218 }
16219
16220 static int
16221 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16222 {
16223         return nl80211_add_mod_link_station(skb, info, false);
16224 }
16225
16226 static int
16227 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16228 {
16229         struct link_station_del_parameters params = {};
16230         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16231         struct net_device *dev = info->user_ptr[1];
16232
16233         if (!rdev->ops->del_link_station)
16234                 return -EOPNOTSUPP;
16235
16236         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16237             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16238                 return -EINVAL;
16239
16240         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16241         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16242
16243         return rdev_del_link_station(rdev, dev, &params);
16244 }
16245
16246 static int nl80211_set_hw_timestamp(struct sk_buff *skb,
16247                                     struct genl_info *info)
16248 {
16249         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16250         struct net_device *dev = info->user_ptr[1];
16251         struct cfg80211_set_hw_timestamp hwts = {};
16252
16253         if (!rdev->wiphy.hw_timestamp_max_peers)
16254                 return -EOPNOTSUPP;
16255
16256         if (!info->attrs[NL80211_ATTR_MAC] &&
16257             rdev->wiphy.hw_timestamp_max_peers != CFG80211_HW_TIMESTAMP_ALL_PEERS)
16258                 return -EOPNOTSUPP;
16259
16260         if (info->attrs[NL80211_ATTR_MAC])
16261                 hwts.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16262
16263         hwts.enable =
16264                 nla_get_flag(info->attrs[NL80211_ATTR_HW_TIMESTAMP_ENABLED]);
16265
16266         return rdev_set_hw_timestamp(rdev, dev, &hwts);
16267 }
16268
16269 static int
16270 nl80211_set_ttlm(struct sk_buff *skb, struct genl_info *info)
16271 {
16272         struct cfg80211_ttlm_params params = {};
16273         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16274         struct net_device *dev = info->user_ptr[1];
16275         struct wireless_dev *wdev = dev->ieee80211_ptr;
16276
16277         if (wdev->iftype != NL80211_IFTYPE_STATION &&
16278             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
16279                 return -EOPNOTSUPP;
16280
16281         if (!wdev->connected)
16282                 return -ENOLINK;
16283
16284         if (!info->attrs[NL80211_ATTR_MLO_TTLM_DLINK] ||
16285             !info->attrs[NL80211_ATTR_MLO_TTLM_ULINK])
16286                 return -EINVAL;
16287
16288         nla_memcpy(params.dlink,
16289                    info->attrs[NL80211_ATTR_MLO_TTLM_DLINK],
16290                    sizeof(params.dlink));
16291         nla_memcpy(params.ulink,
16292                    info->attrs[NL80211_ATTR_MLO_TTLM_ULINK],
16293                    sizeof(params.ulink));
16294
16295         return rdev_set_ttlm(rdev, dev, &params);
16296 }
16297
16298 #define NL80211_FLAG_NEED_WIPHY         0x01
16299 #define NL80211_FLAG_NEED_NETDEV        0x02
16300 #define NL80211_FLAG_NEED_RTNL          0x04
16301 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
16302 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
16303                                          NL80211_FLAG_CHECK_NETDEV_UP)
16304 #define NL80211_FLAG_NEED_WDEV          0x10
16305 /* If a netdev is associated, it must be UP, P2P must be started */
16306 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
16307                                          NL80211_FLAG_CHECK_NETDEV_UP)
16308 #define NL80211_FLAG_CLEAR_SKB          0x20
16309 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
16310 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
16311 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
16312
16313 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
16314         SELECTOR(__sel, NONE, 0) /* must be first */    \
16315         SELECTOR(__sel, WIPHY,                          \
16316                  NL80211_FLAG_NEED_WIPHY)               \
16317         SELECTOR(__sel, WDEV,                           \
16318                  NL80211_FLAG_NEED_WDEV)                \
16319         SELECTOR(__sel, NETDEV,                         \
16320                  NL80211_FLAG_NEED_NETDEV)              \
16321         SELECTOR(__sel, NETDEV_LINK,                    \
16322                  NL80211_FLAG_NEED_NETDEV |             \
16323                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16324         SELECTOR(__sel, NETDEV_NO_MLO,                  \
16325                  NL80211_FLAG_NEED_NETDEV |             \
16326                  NL80211_FLAG_MLO_UNSUPPORTED)  \
16327         SELECTOR(__sel, WIPHY_RTNL,                     \
16328                  NL80211_FLAG_NEED_WIPHY |              \
16329                  NL80211_FLAG_NEED_RTNL)                \
16330         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
16331                  NL80211_FLAG_NEED_WIPHY |              \
16332                  NL80211_FLAG_NEED_RTNL |               \
16333                  NL80211_FLAG_NO_WIPHY_MTX)             \
16334         SELECTOR(__sel, WDEV_RTNL,                      \
16335                  NL80211_FLAG_NEED_WDEV |               \
16336                  NL80211_FLAG_NEED_RTNL)                \
16337         SELECTOR(__sel, NETDEV_RTNL,                    \
16338                  NL80211_FLAG_NEED_NETDEV |             \
16339                  NL80211_FLAG_NEED_RTNL)                \
16340         SELECTOR(__sel, NETDEV_UP,                      \
16341                  NL80211_FLAG_NEED_NETDEV_UP)           \
16342         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16343                  NL80211_FLAG_NEED_NETDEV_UP |          \
16344                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16345         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16346                  NL80211_FLAG_NEED_NETDEV_UP |          \
16347                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16348         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16349                  NL80211_FLAG_NEED_NETDEV_UP |          \
16350                  NL80211_FLAG_CLEAR_SKB |               \
16351                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16352         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16353                  NL80211_FLAG_NEED_NETDEV_UP |          \
16354                  NL80211_FLAG_NO_WIPHY_MTX)             \
16355         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16356                  NL80211_FLAG_NEED_NETDEV_UP |          \
16357                  NL80211_FLAG_NO_WIPHY_MTX |            \
16358                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16359         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16360                  NL80211_FLAG_NEED_NETDEV_UP |          \
16361                  NL80211_FLAG_CLEAR_SKB)                \
16362         SELECTOR(__sel, WDEV_UP,                        \
16363                  NL80211_FLAG_NEED_WDEV_UP)             \
16364         SELECTOR(__sel, WDEV_UP_LINK,                   \
16365                  NL80211_FLAG_NEED_WDEV_UP |            \
16366                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16367         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16368                  NL80211_FLAG_NEED_WDEV_UP |            \
16369                  NL80211_FLAG_NEED_RTNL)                \
16370         SELECTOR(__sel, WIPHY_CLEAR,                    \
16371                  NL80211_FLAG_NEED_WIPHY |              \
16372                  NL80211_FLAG_CLEAR_SKB)
16373
16374 enum nl80211_internal_flags_selector {
16375 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16376         INTERNAL_FLAG_SELECTORS(_)
16377 #undef SELECTOR
16378 };
16379
16380 static u32 nl80211_internal_flags[] = {
16381 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16382         INTERNAL_FLAG_SELECTORS(_)
16383 #undef SELECTOR
16384 };
16385
16386 static int nl80211_pre_doit(const struct genl_split_ops *ops,
16387                             struct sk_buff *skb,
16388                             struct genl_info *info)
16389 {
16390         struct cfg80211_registered_device *rdev = NULL;
16391         struct wireless_dev *wdev = NULL;
16392         struct net_device *dev = NULL;
16393         u32 internal_flags;
16394         int err;
16395
16396         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16397                 return -EINVAL;
16398
16399         internal_flags = nl80211_internal_flags[ops->internal_flags];
16400
16401         rtnl_lock();
16402         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16403                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16404                 if (IS_ERR(rdev)) {
16405                         err = PTR_ERR(rdev);
16406                         goto out_unlock;
16407                 }
16408                 info->user_ptr[0] = rdev;
16409         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16410                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16411                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16412                                                   info->attrs);
16413                 if (IS_ERR(wdev)) {
16414                         err = PTR_ERR(wdev);
16415                         goto out_unlock;
16416                 }
16417
16418                 dev = wdev->netdev;
16419                 dev_hold(dev);
16420                 rdev = wiphy_to_rdev(wdev->wiphy);
16421
16422                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16423                         if (!dev) {
16424                                 err = -EINVAL;
16425                                 goto out_unlock;
16426                         }
16427
16428                         info->user_ptr[1] = dev;
16429                 } else {
16430                         info->user_ptr[1] = wdev;
16431                 }
16432
16433                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16434                     !wdev_running(wdev)) {
16435                         err = -ENETDOWN;
16436                         goto out_unlock;
16437                 }
16438
16439                 info->user_ptr[0] = rdev;
16440         }
16441
16442         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16443                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16444
16445                 if (!wdev) {
16446                         err = -EINVAL;
16447                         goto out_unlock;
16448                 }
16449
16450                 /* MLO -> require valid link ID */
16451                 if (wdev->valid_links &&
16452                     (!link_id ||
16453                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16454                         err = -EINVAL;
16455                         goto out_unlock;
16456                 }
16457
16458                 /* non-MLO -> no link ID attribute accepted */
16459                 if (!wdev->valid_links && link_id) {
16460                         err = -EINVAL;
16461                         goto out_unlock;
16462                 }
16463         }
16464
16465         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16466                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16467                     (wdev && wdev->valid_links)) {
16468                         err = -EINVAL;
16469                         goto out_unlock;
16470                 }
16471         }
16472
16473         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16474                 wiphy_lock(&rdev->wiphy);
16475                 /* we keep the mutex locked until post_doit */
16476                 __release(&rdev->wiphy.mtx);
16477         }
16478         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16479                 rtnl_unlock();
16480
16481         return 0;
16482 out_unlock:
16483         rtnl_unlock();
16484         dev_put(dev);
16485         return err;
16486 }
16487
16488 static void nl80211_post_doit(const struct genl_split_ops *ops,
16489                               struct sk_buff *skb,
16490                               struct genl_info *info)
16491 {
16492         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16493
16494         if (info->user_ptr[1]) {
16495                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16496                         struct wireless_dev *wdev = info->user_ptr[1];
16497
16498                         dev_put(wdev->netdev);
16499                 } else {
16500                         dev_put(info->user_ptr[1]);
16501                 }
16502         }
16503
16504         if (info->user_ptr[0] &&
16505             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16506                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16507
16508                 /* we kept the mutex locked since pre_doit */
16509                 __acquire(&rdev->wiphy.mtx);
16510                 wiphy_unlock(&rdev->wiphy);
16511         }
16512
16513         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16514                 rtnl_unlock();
16515
16516         /* If needed, clear the netlink message payload from the SKB
16517          * as it might contain key data that shouldn't stick around on
16518          * the heap after the SKB is freed. The netlink message header
16519          * is still needed for further processing, so leave it intact.
16520          */
16521         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16522                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16523
16524                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16525         }
16526 }
16527
16528 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16529                                      struct cfg80211_sar_specs *sar_specs,
16530                                      struct nlattr *spec[], int index)
16531 {
16532         u32 range_index, i;
16533
16534         if (!sar_specs || !spec)
16535                 return -EINVAL;
16536
16537         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16538             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16539                 return -EINVAL;
16540
16541         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16542
16543         /* check if range_index exceeds num_freq_ranges */
16544         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16545                 return -EINVAL;
16546
16547         /* check if range_index duplicates */
16548         for (i = 0; i < index; i++) {
16549                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16550                         return -EINVAL;
16551         }
16552
16553         sar_specs->sub_specs[index].power =
16554                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16555
16556         sar_specs->sub_specs[index].freq_range_index = range_index;
16557
16558         return 0;
16559 }
16560
16561 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16562 {
16563         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16564         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16565         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16566         struct cfg80211_sar_specs *sar_spec;
16567         enum nl80211_sar_type type;
16568         struct nlattr *spec_list;
16569         u32 specs;
16570         int rem, err;
16571
16572         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16573                 return -EOPNOTSUPP;
16574
16575         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16576                 return -EINVAL;
16577
16578         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16579                          info->attrs[NL80211_ATTR_SAR_SPEC],
16580                          NULL, NULL);
16581
16582         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16583                 return -EINVAL;
16584
16585         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16586         if (type != rdev->wiphy.sar_capa->type)
16587                 return -EINVAL;
16588
16589         specs = 0;
16590         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16591                 specs++;
16592
16593         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16594                 return -EINVAL;
16595
16596         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16597         if (!sar_spec)
16598                 return -ENOMEM;
16599
16600         sar_spec->type = type;
16601         specs = 0;
16602         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16603                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16604                                  spec_list, NULL, NULL);
16605
16606                 switch (type) {
16607                 case NL80211_SAR_TYPE_POWER:
16608                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16609                                                       spec, specs)) {
16610                                 err = -EINVAL;
16611                                 goto error;
16612                         }
16613                         break;
16614                 default:
16615                         err = -EINVAL;
16616                         goto error;
16617                 }
16618                 specs++;
16619         }
16620
16621         sar_spec->num_sub_specs = specs;
16622
16623         rdev->cur_cmd_info = info;
16624         err = rdev_set_sar_specs(rdev, sar_spec);
16625         rdev->cur_cmd_info = NULL;
16626 error:
16627         kfree(sar_spec);
16628         return err;
16629 }
16630
16631 #define SELECTOR(__sel, name, value) \
16632         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16633 int __missing_selector(void);
16634 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16635
16636 static const struct genl_ops nl80211_ops[] = {
16637         {
16638                 .cmd = NL80211_CMD_GET_WIPHY,
16639                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16640                 .doit = nl80211_get_wiphy,
16641                 .dumpit = nl80211_dump_wiphy,
16642                 .done = nl80211_dump_wiphy_done,
16643                 /* can be retrieved by unprivileged users */
16644                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16645         },
16646 };
16647
16648 static const struct genl_small_ops nl80211_small_ops[] = {
16649         {
16650                 .cmd = NL80211_CMD_SET_WIPHY,
16651                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16652                 .doit = nl80211_set_wiphy,
16653                 .flags = GENL_UNS_ADMIN_PERM,
16654         },
16655         {
16656                 .cmd = NL80211_CMD_GET_INTERFACE,
16657                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16658                 .doit = nl80211_get_interface,
16659                 .dumpit = nl80211_dump_interface,
16660                 /* can be retrieved by unprivileged users */
16661                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16662         },
16663         {
16664                 .cmd = NL80211_CMD_SET_INTERFACE,
16665                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16666                 .doit = nl80211_set_interface,
16667                 .flags = GENL_UNS_ADMIN_PERM,
16668                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16669                                          NL80211_FLAG_NEED_RTNL),
16670         },
16671         {
16672                 .cmd = NL80211_CMD_NEW_INTERFACE,
16673                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16674                 .doit = nl80211_new_interface,
16675                 .flags = GENL_UNS_ADMIN_PERM,
16676                 .internal_flags =
16677                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16678                                NL80211_FLAG_NEED_RTNL |
16679                                /* we take the wiphy mutex later ourselves */
16680                                NL80211_FLAG_NO_WIPHY_MTX),
16681         },
16682         {
16683                 .cmd = NL80211_CMD_DEL_INTERFACE,
16684                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16685                 .doit = nl80211_del_interface,
16686                 .flags = GENL_UNS_ADMIN_PERM,
16687                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16688                                          NL80211_FLAG_NEED_RTNL),
16689         },
16690         {
16691                 .cmd = NL80211_CMD_GET_KEY,
16692                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16693                 .doit = nl80211_get_key,
16694                 .flags = GENL_UNS_ADMIN_PERM,
16695                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16696         },
16697         {
16698                 .cmd = NL80211_CMD_SET_KEY,
16699                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16700                 .doit = nl80211_set_key,
16701                 .flags = GENL_UNS_ADMIN_PERM,
16702                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16703                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16704                                          NL80211_FLAG_CLEAR_SKB),
16705         },
16706         {
16707                 .cmd = NL80211_CMD_NEW_KEY,
16708                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16709                 .doit = nl80211_new_key,
16710                 .flags = GENL_UNS_ADMIN_PERM,
16711                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16712                                          NL80211_FLAG_CLEAR_SKB),
16713         },
16714         {
16715                 .cmd = NL80211_CMD_DEL_KEY,
16716                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16717                 .doit = nl80211_del_key,
16718                 .flags = GENL_UNS_ADMIN_PERM,
16719                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16720         },
16721         {
16722                 .cmd = NL80211_CMD_SET_BEACON,
16723                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16724                 .flags = GENL_UNS_ADMIN_PERM,
16725                 .doit = nl80211_set_beacon,
16726                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16727                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16728         },
16729         {
16730                 .cmd = NL80211_CMD_START_AP,
16731                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16732                 .flags = GENL_UNS_ADMIN_PERM,
16733                 .doit = nl80211_start_ap,
16734                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16735                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16736         },
16737         {
16738                 .cmd = NL80211_CMD_STOP_AP,
16739                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16740                 .flags = GENL_UNS_ADMIN_PERM,
16741                 .doit = nl80211_stop_ap,
16742                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16743                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16744         },
16745         {
16746                 .cmd = NL80211_CMD_GET_STATION,
16747                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16748                 .doit = nl80211_get_station,
16749                 .dumpit = nl80211_dump_station,
16750                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16751         },
16752         {
16753                 .cmd = NL80211_CMD_SET_STATION,
16754                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16755                 .doit = nl80211_set_station,
16756                 .flags = GENL_UNS_ADMIN_PERM,
16757                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16758         },
16759         {
16760                 .cmd = NL80211_CMD_NEW_STATION,
16761                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16762                 .doit = nl80211_new_station,
16763                 .flags = GENL_UNS_ADMIN_PERM,
16764                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16765         },
16766         {
16767                 .cmd = NL80211_CMD_DEL_STATION,
16768                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16769                 .doit = nl80211_del_station,
16770                 .flags = GENL_UNS_ADMIN_PERM,
16771                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on
16772                  * whether MAC address is passed or not. If MAC address is
16773                  * passed, then even during MLO, link ID is not required.
16774                  */
16775                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16776         },
16777         {
16778                 .cmd = NL80211_CMD_GET_MPATH,
16779                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16780                 .doit = nl80211_get_mpath,
16781                 .dumpit = nl80211_dump_mpath,
16782                 .flags = GENL_UNS_ADMIN_PERM,
16783                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16784         },
16785         {
16786                 .cmd = NL80211_CMD_GET_MPP,
16787                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16788                 .doit = nl80211_get_mpp,
16789                 .dumpit = nl80211_dump_mpp,
16790                 .flags = GENL_UNS_ADMIN_PERM,
16791                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16792         },
16793         {
16794                 .cmd = NL80211_CMD_SET_MPATH,
16795                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16796                 .doit = nl80211_set_mpath,
16797                 .flags = GENL_UNS_ADMIN_PERM,
16798                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16799         },
16800         {
16801                 .cmd = NL80211_CMD_NEW_MPATH,
16802                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16803                 .doit = nl80211_new_mpath,
16804                 .flags = GENL_UNS_ADMIN_PERM,
16805                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16806         },
16807         {
16808                 .cmd = NL80211_CMD_DEL_MPATH,
16809                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16810                 .doit = nl80211_del_mpath,
16811                 .flags = GENL_UNS_ADMIN_PERM,
16812                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16813         },
16814         {
16815                 .cmd = NL80211_CMD_SET_BSS,
16816                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16817                 .doit = nl80211_set_bss,
16818                 .flags = GENL_UNS_ADMIN_PERM,
16819                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16820                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16821         },
16822         {
16823                 .cmd = NL80211_CMD_GET_REG,
16824                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16825                 .doit = nl80211_get_reg_do,
16826                 .dumpit = nl80211_get_reg_dump,
16827                 /* can be retrieved by unprivileged users */
16828         },
16829 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16830         {
16831                 .cmd = NL80211_CMD_SET_REG,
16832                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16833                 .doit = nl80211_set_reg,
16834                 .flags = GENL_ADMIN_PERM,
16835         },
16836 #endif
16837         {
16838                 .cmd = NL80211_CMD_REQ_SET_REG,
16839                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16840                 .doit = nl80211_req_set_reg,
16841                 .flags = GENL_ADMIN_PERM,
16842         },
16843         {
16844                 .cmd = NL80211_CMD_RELOAD_REGDB,
16845                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16846                 .doit = nl80211_reload_regdb,
16847                 .flags = GENL_ADMIN_PERM,
16848         },
16849         {
16850                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16851                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16852                 .doit = nl80211_get_mesh_config,
16853                 /* can be retrieved by unprivileged users */
16854                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16855         },
16856         {
16857                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16858                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16859                 .doit = nl80211_update_mesh_config,
16860                 .flags = GENL_UNS_ADMIN_PERM,
16861                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16862         },
16863         {
16864                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16865                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16866                 .doit = nl80211_trigger_scan,
16867                 .flags = GENL_UNS_ADMIN_PERM,
16868                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16869         },
16870         {
16871                 .cmd = NL80211_CMD_ABORT_SCAN,
16872                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16873                 .doit = nl80211_abort_scan,
16874                 .flags = GENL_UNS_ADMIN_PERM,
16875                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16876         },
16877         {
16878                 .cmd = NL80211_CMD_GET_SCAN,
16879                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16880                 .dumpit = nl80211_dump_scan,
16881         },
16882         {
16883                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16884                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16885                 .doit = nl80211_start_sched_scan,
16886                 .flags = GENL_UNS_ADMIN_PERM,
16887                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16888         },
16889         {
16890                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16891                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16892                 .doit = nl80211_stop_sched_scan,
16893                 .flags = GENL_UNS_ADMIN_PERM,
16894                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16895         },
16896         {
16897                 .cmd = NL80211_CMD_AUTHENTICATE,
16898                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16899                 .doit = nl80211_authenticate,
16900                 .flags = GENL_UNS_ADMIN_PERM,
16901                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16902                                          NL80211_FLAG_CLEAR_SKB),
16903         },
16904         {
16905                 .cmd = NL80211_CMD_ASSOCIATE,
16906                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16907                 .doit = nl80211_associate,
16908                 .flags = GENL_UNS_ADMIN_PERM,
16909                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16910                                          NL80211_FLAG_CLEAR_SKB),
16911         },
16912         {
16913                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16914                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16915                 .doit = nl80211_deauthenticate,
16916                 .flags = GENL_UNS_ADMIN_PERM,
16917                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16918         },
16919         {
16920                 .cmd = NL80211_CMD_DISASSOCIATE,
16921                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16922                 .doit = nl80211_disassociate,
16923                 .flags = GENL_UNS_ADMIN_PERM,
16924                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16925         },
16926         {
16927                 .cmd = NL80211_CMD_JOIN_IBSS,
16928                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16929                 .doit = nl80211_join_ibss,
16930                 .flags = GENL_UNS_ADMIN_PERM,
16931                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16932         },
16933         {
16934                 .cmd = NL80211_CMD_LEAVE_IBSS,
16935                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16936                 .doit = nl80211_leave_ibss,
16937                 .flags = GENL_UNS_ADMIN_PERM,
16938                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16939         },
16940 #ifdef CONFIG_NL80211_TESTMODE
16941         {
16942                 .cmd = NL80211_CMD_TESTMODE,
16943                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16944                 .doit = nl80211_testmode_do,
16945                 .dumpit = nl80211_testmode_dump,
16946                 .flags = GENL_UNS_ADMIN_PERM,
16947                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16948         },
16949 #endif
16950         {
16951                 .cmd = NL80211_CMD_CONNECT,
16952                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16953                 .doit = nl80211_connect,
16954                 .flags = GENL_UNS_ADMIN_PERM,
16955                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16956                                          NL80211_FLAG_CLEAR_SKB),
16957         },
16958         {
16959                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
16960                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16961                 .doit = nl80211_update_connect_params,
16962                 .flags = GENL_ADMIN_PERM,
16963                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16964                                          NL80211_FLAG_CLEAR_SKB),
16965         },
16966         {
16967                 .cmd = NL80211_CMD_DISCONNECT,
16968                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16969                 .doit = nl80211_disconnect,
16970                 .flags = GENL_UNS_ADMIN_PERM,
16971                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16972         },
16973         {
16974                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
16975                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16976                 .doit = nl80211_wiphy_netns,
16977                 .flags = GENL_UNS_ADMIN_PERM,
16978                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
16979                                          NL80211_FLAG_NEED_RTNL |
16980                                          NL80211_FLAG_NO_WIPHY_MTX),
16981         },
16982         {
16983                 .cmd = NL80211_CMD_GET_SURVEY,
16984                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16985                 .dumpit = nl80211_dump_survey,
16986         },
16987         {
16988                 .cmd = NL80211_CMD_SET_PMKSA,
16989                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16990                 .doit = nl80211_set_pmksa,
16991                 .flags = GENL_UNS_ADMIN_PERM,
16992                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16993                                          NL80211_FLAG_CLEAR_SKB),
16994         },
16995         {
16996                 .cmd = NL80211_CMD_DEL_PMKSA,
16997                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16998                 .doit = nl80211_del_pmksa,
16999                 .flags = GENL_UNS_ADMIN_PERM,
17000                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17001         },
17002         {
17003                 .cmd = NL80211_CMD_FLUSH_PMKSA,
17004                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17005                 .doit = nl80211_flush_pmksa,
17006                 .flags = GENL_UNS_ADMIN_PERM,
17007                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17008         },
17009         {
17010                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
17011                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17012                 .doit = nl80211_remain_on_channel,
17013                 .flags = GENL_UNS_ADMIN_PERM,
17014                 /* FIXME: requiring a link ID here is probably not good */
17015                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17016                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17017         },
17018         {
17019                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
17020                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17021                 .doit = nl80211_cancel_remain_on_channel,
17022                 .flags = GENL_UNS_ADMIN_PERM,
17023                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17024         },
17025         {
17026                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
17027                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17028                 .doit = nl80211_set_tx_bitrate_mask,
17029                 .flags = GENL_UNS_ADMIN_PERM,
17030                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17031                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17032         },
17033         {
17034                 .cmd = NL80211_CMD_REGISTER_FRAME,
17035                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17036                 .doit = nl80211_register_mgmt,
17037                 .flags = GENL_UNS_ADMIN_PERM,
17038                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
17039         },
17040         {
17041                 .cmd = NL80211_CMD_FRAME,
17042                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17043                 .doit = nl80211_tx_mgmt,
17044                 .flags = GENL_UNS_ADMIN_PERM,
17045                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17046         },
17047         {
17048                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
17049                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17050                 .doit = nl80211_tx_mgmt_cancel_wait,
17051                 .flags = GENL_UNS_ADMIN_PERM,
17052                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17053         },
17054         {
17055                 .cmd = NL80211_CMD_SET_POWER_SAVE,
17056                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17057                 .doit = nl80211_set_power_save,
17058                 .flags = GENL_UNS_ADMIN_PERM,
17059                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17060         },
17061         {
17062                 .cmd = NL80211_CMD_GET_POWER_SAVE,
17063                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17064                 .doit = nl80211_get_power_save,
17065                 /* can be retrieved by unprivileged users */
17066                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17067         },
17068         {
17069                 .cmd = NL80211_CMD_SET_CQM,
17070                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17071                 .doit = nl80211_set_cqm,
17072                 .flags = GENL_UNS_ADMIN_PERM,
17073                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17074         },
17075         {
17076                 .cmd = NL80211_CMD_SET_CHANNEL,
17077                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17078                 .doit = nl80211_set_channel,
17079                 .flags = GENL_UNS_ADMIN_PERM,
17080                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17081                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17082         },
17083         {
17084                 .cmd = NL80211_CMD_JOIN_MESH,
17085                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17086                 .doit = nl80211_join_mesh,
17087                 .flags = GENL_UNS_ADMIN_PERM,
17088                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17089         },
17090         {
17091                 .cmd = NL80211_CMD_LEAVE_MESH,
17092                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17093                 .doit = nl80211_leave_mesh,
17094                 .flags = GENL_UNS_ADMIN_PERM,
17095                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17096         },
17097         {
17098                 .cmd = NL80211_CMD_JOIN_OCB,
17099                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17100                 .doit = nl80211_join_ocb,
17101                 .flags = GENL_UNS_ADMIN_PERM,
17102                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17103         },
17104         {
17105                 .cmd = NL80211_CMD_LEAVE_OCB,
17106                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17107                 .doit = nl80211_leave_ocb,
17108                 .flags = GENL_UNS_ADMIN_PERM,
17109                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17110         },
17111 #ifdef CONFIG_PM
17112         {
17113                 .cmd = NL80211_CMD_GET_WOWLAN,
17114                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17115                 .doit = nl80211_get_wowlan,
17116                 /* can be retrieved by unprivileged users */
17117                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17118         },
17119         {
17120                 .cmd = NL80211_CMD_SET_WOWLAN,
17121                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17122                 .doit = nl80211_set_wowlan,
17123                 .flags = GENL_UNS_ADMIN_PERM,
17124                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17125         },
17126 #endif
17127         {
17128                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
17129                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17130                 .doit = nl80211_set_rekey_data,
17131                 .flags = GENL_UNS_ADMIN_PERM,
17132                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17133                                          NL80211_FLAG_CLEAR_SKB),
17134         },
17135         {
17136                 .cmd = NL80211_CMD_TDLS_MGMT,
17137                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17138                 .doit = nl80211_tdls_mgmt,
17139                 .flags = GENL_UNS_ADMIN_PERM,
17140                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17141                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17142         },
17143         {
17144                 .cmd = NL80211_CMD_TDLS_OPER,
17145                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17146                 .doit = nl80211_tdls_oper,
17147                 .flags = GENL_UNS_ADMIN_PERM,
17148                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17149         },
17150         {
17151                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
17152                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17153                 .doit = nl80211_register_unexpected_frame,
17154                 .flags = GENL_UNS_ADMIN_PERM,
17155                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17156         },
17157         {
17158                 .cmd = NL80211_CMD_PROBE_CLIENT,
17159                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17160                 .doit = nl80211_probe_client,
17161                 .flags = GENL_UNS_ADMIN_PERM,
17162                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17163         },
17164         {
17165                 .cmd = NL80211_CMD_REGISTER_BEACONS,
17166                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17167                 .doit = nl80211_register_beacons,
17168                 .flags = GENL_UNS_ADMIN_PERM,
17169                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17170         },
17171         {
17172                 .cmd = NL80211_CMD_SET_NOACK_MAP,
17173                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17174                 .doit = nl80211_set_noack_map,
17175                 .flags = GENL_UNS_ADMIN_PERM,
17176                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17177         },
17178         {
17179                 .cmd = NL80211_CMD_START_P2P_DEVICE,
17180                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17181                 .doit = nl80211_start_p2p_device,
17182                 .flags = GENL_UNS_ADMIN_PERM,
17183                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17184                                          NL80211_FLAG_NEED_RTNL),
17185         },
17186         {
17187                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
17188                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17189                 .doit = nl80211_stop_p2p_device,
17190                 .flags = GENL_UNS_ADMIN_PERM,
17191                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17192                                          NL80211_FLAG_NEED_RTNL),
17193         },
17194         {
17195                 .cmd = NL80211_CMD_START_NAN,
17196                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17197                 .doit = nl80211_start_nan,
17198                 .flags = GENL_ADMIN_PERM,
17199                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17200                                          NL80211_FLAG_NEED_RTNL),
17201         },
17202         {
17203                 .cmd = NL80211_CMD_STOP_NAN,
17204                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17205                 .doit = nl80211_stop_nan,
17206                 .flags = GENL_ADMIN_PERM,
17207                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17208                                          NL80211_FLAG_NEED_RTNL),
17209         },
17210         {
17211                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
17212                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17213                 .doit = nl80211_nan_add_func,
17214                 .flags = GENL_ADMIN_PERM,
17215                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17216         },
17217         {
17218                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
17219                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17220                 .doit = nl80211_nan_del_func,
17221                 .flags = GENL_ADMIN_PERM,
17222                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17223         },
17224         {
17225                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
17226                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17227                 .doit = nl80211_nan_change_config,
17228                 .flags = GENL_ADMIN_PERM,
17229                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17230         },
17231         {
17232                 .cmd = NL80211_CMD_SET_MCAST_RATE,
17233                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17234                 .doit = nl80211_set_mcast_rate,
17235                 .flags = GENL_UNS_ADMIN_PERM,
17236                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17237         },
17238         {
17239                 .cmd = NL80211_CMD_SET_MAC_ACL,
17240                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17241                 .doit = nl80211_set_mac_acl,
17242                 .flags = GENL_UNS_ADMIN_PERM,
17243                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17244                                          NL80211_FLAG_MLO_UNSUPPORTED),
17245         },
17246         {
17247                 .cmd = NL80211_CMD_RADAR_DETECT,
17248                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17249                 .doit = nl80211_start_radar_detection,
17250                 .flags = GENL_UNS_ADMIN_PERM,
17251                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17252                                          NL80211_FLAG_NO_WIPHY_MTX |
17253                                          NL80211_FLAG_MLO_UNSUPPORTED),
17254         },
17255         {
17256                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17257                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17258                 .doit = nl80211_get_protocol_features,
17259         },
17260         {
17261                 .cmd = NL80211_CMD_UPDATE_FT_IES,
17262                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17263                 .doit = nl80211_update_ft_ies,
17264                 .flags = GENL_UNS_ADMIN_PERM,
17265                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17266         },
17267         {
17268                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17269                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17270                 .doit = nl80211_crit_protocol_start,
17271                 .flags = GENL_UNS_ADMIN_PERM,
17272                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17273         },
17274         {
17275                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17276                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17277                 .doit = nl80211_crit_protocol_stop,
17278                 .flags = GENL_UNS_ADMIN_PERM,
17279                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17280         },
17281         {
17282                 .cmd = NL80211_CMD_GET_COALESCE,
17283                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17284                 .doit = nl80211_get_coalesce,
17285                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17286         },
17287         {
17288                 .cmd = NL80211_CMD_SET_COALESCE,
17289                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17290                 .doit = nl80211_set_coalesce,
17291                 .flags = GENL_UNS_ADMIN_PERM,
17292                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17293         },
17294         {
17295                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17296                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17297                 .doit = nl80211_channel_switch,
17298                 .flags = GENL_UNS_ADMIN_PERM,
17299                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17300                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17301         },
17302         {
17303                 .cmd = NL80211_CMD_VENDOR,
17304                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17305                 .doit = nl80211_vendor_cmd,
17306                 .dumpit = nl80211_vendor_cmd_dump,
17307                 .flags = GENL_UNS_ADMIN_PERM,
17308                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17309                                          NL80211_FLAG_CLEAR_SKB),
17310         },
17311         {
17312                 .cmd = NL80211_CMD_SET_QOS_MAP,
17313                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17314                 .doit = nl80211_set_qos_map,
17315                 .flags = GENL_UNS_ADMIN_PERM,
17316                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17317         },
17318         {
17319                 .cmd = NL80211_CMD_ADD_TX_TS,
17320                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17321                 .doit = nl80211_add_tx_ts,
17322                 .flags = GENL_UNS_ADMIN_PERM,
17323                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17324                                          NL80211_FLAG_MLO_UNSUPPORTED),
17325         },
17326         {
17327                 .cmd = NL80211_CMD_DEL_TX_TS,
17328                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17329                 .doit = nl80211_del_tx_ts,
17330                 .flags = GENL_UNS_ADMIN_PERM,
17331                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17332         },
17333         {
17334                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17335                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17336                 .doit = nl80211_tdls_channel_switch,
17337                 .flags = GENL_UNS_ADMIN_PERM,
17338                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17339         },
17340         {
17341                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17342                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17343                 .doit = nl80211_tdls_cancel_channel_switch,
17344                 .flags = GENL_UNS_ADMIN_PERM,
17345                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17346         },
17347         {
17348                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17349                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17350                 .doit = nl80211_set_multicast_to_unicast,
17351                 .flags = GENL_UNS_ADMIN_PERM,
17352                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17353         },
17354         {
17355                 .cmd = NL80211_CMD_SET_PMK,
17356                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17357                 .doit = nl80211_set_pmk,
17358                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17359                                          NL80211_FLAG_CLEAR_SKB),
17360         },
17361         {
17362                 .cmd = NL80211_CMD_DEL_PMK,
17363                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17364                 .doit = nl80211_del_pmk,
17365                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17366         },
17367         {
17368                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17369                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17370                 .doit = nl80211_external_auth,
17371                 .flags = GENL_ADMIN_PERM,
17372                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17373         },
17374         {
17375                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17376                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17377                 .doit = nl80211_tx_control_port,
17378                 .flags = GENL_UNS_ADMIN_PERM,
17379                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17380         },
17381         {
17382                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17383                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17384                 .doit = nl80211_get_ftm_responder_stats,
17385                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17386                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17387         },
17388         {
17389                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17390                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17391                 .doit = nl80211_pmsr_start,
17392                 .flags = GENL_UNS_ADMIN_PERM,
17393                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17394         },
17395         {
17396                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17397                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17398                 .doit = nl80211_notify_radar_detection,
17399                 .flags = GENL_UNS_ADMIN_PERM,
17400                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17401         },
17402         {
17403                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17404                 .doit = nl80211_update_owe_info,
17405                 .flags = GENL_ADMIN_PERM,
17406                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17407         },
17408         {
17409                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17410                 .doit = nl80211_probe_mesh_link,
17411                 .flags = GENL_UNS_ADMIN_PERM,
17412                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17413         },
17414         {
17415                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17416                 .doit = nl80211_set_tid_config,
17417                 .flags = GENL_UNS_ADMIN_PERM,
17418                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17419                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17420         },
17421         {
17422                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17423                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17424                 .doit = nl80211_set_sar_specs,
17425                 .flags = GENL_UNS_ADMIN_PERM,
17426                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17427                                          NL80211_FLAG_NEED_RTNL),
17428         },
17429         {
17430                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17431                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17432                 .doit = nl80211_color_change,
17433                 .flags = GENL_UNS_ADMIN_PERM,
17434                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17435         },
17436         {
17437                 .cmd = NL80211_CMD_SET_FILS_AAD,
17438                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17439                 .doit = nl80211_set_fils_aad,
17440                 .flags = GENL_UNS_ADMIN_PERM,
17441                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17442         },
17443         {
17444                 .cmd = NL80211_CMD_ADD_LINK,
17445                 .doit = nl80211_add_link,
17446                 .flags = GENL_UNS_ADMIN_PERM,
17447                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17448         },
17449         {
17450                 .cmd = NL80211_CMD_REMOVE_LINK,
17451                 .doit = nl80211_remove_link,
17452                 .flags = GENL_UNS_ADMIN_PERM,
17453                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17454                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17455         },
17456         {
17457                 .cmd = NL80211_CMD_ADD_LINK_STA,
17458                 .doit = nl80211_add_link_station,
17459                 .flags = GENL_UNS_ADMIN_PERM,
17460                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17461                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17462         },
17463         {
17464                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17465                 .doit = nl80211_modify_link_station,
17466                 .flags = GENL_UNS_ADMIN_PERM,
17467                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17468                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17469         },
17470         {
17471                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17472                 .doit = nl80211_remove_link_station,
17473                 .flags = GENL_UNS_ADMIN_PERM,
17474                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17475                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17476         },
17477         {
17478                 .cmd = NL80211_CMD_SET_HW_TIMESTAMP,
17479                 .doit = nl80211_set_hw_timestamp,
17480                 .flags = GENL_UNS_ADMIN_PERM,
17481                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17482         },
17483         {
17484                 .cmd = NL80211_CMD_SET_TID_TO_LINK_MAPPING,
17485                 .doit = nl80211_set_ttlm,
17486                 .flags = GENL_UNS_ADMIN_PERM,
17487                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17488         },
17489 };
17490
17491 static struct genl_family nl80211_fam __ro_after_init = {
17492         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17493         .hdrsize = 0,                   /* no private header */
17494         .version = 1,                   /* no particular meaning now */
17495         .maxattr = NL80211_ATTR_MAX,
17496         .policy = nl80211_policy,
17497         .netnsok = true,
17498         .pre_doit = nl80211_pre_doit,
17499         .post_doit = nl80211_post_doit,
17500         .module = THIS_MODULE,
17501         .ops = nl80211_ops,
17502         .n_ops = ARRAY_SIZE(nl80211_ops),
17503         .small_ops = nl80211_small_ops,
17504         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17505         .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17506         .mcgrps = nl80211_mcgrps,
17507         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17508         .parallel_ops = true,
17509 };
17510
17511 /* notification functions */
17512
17513 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17514                           enum nl80211_commands cmd)
17515 {
17516         struct sk_buff *msg;
17517         struct nl80211_dump_wiphy_state state = {};
17518
17519         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17520                 cmd != NL80211_CMD_DEL_WIPHY);
17521
17522         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17523         if (!msg)
17524                 return;
17525
17526         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17527                 nlmsg_free(msg);
17528                 return;
17529         }
17530
17531         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17532                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17533 }
17534
17535 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17536                                 struct wireless_dev *wdev,
17537                                 enum nl80211_commands cmd)
17538 {
17539         struct sk_buff *msg;
17540
17541         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17542         if (!msg)
17543                 return;
17544
17545         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17546                 nlmsg_free(msg);
17547                 return;
17548         }
17549
17550         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17551                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17552 }
17553
17554 static int nl80211_add_scan_req(struct sk_buff *msg,
17555                                 struct cfg80211_registered_device *rdev)
17556 {
17557         struct cfg80211_scan_request *req = rdev->scan_req;
17558         struct nlattr *nest;
17559         int i;
17560         struct cfg80211_scan_info *info;
17561
17562         if (WARN_ON(!req))
17563                 return 0;
17564
17565         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17566         if (!nest)
17567                 goto nla_put_failure;
17568         for (i = 0; i < req->n_ssids; i++) {
17569                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17570                         goto nla_put_failure;
17571         }
17572         nla_nest_end(msg, nest);
17573
17574         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17575                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17576                 if (!nest)
17577                         goto nla_put_failure;
17578                 for (i = 0; i < req->n_channels; i++) {
17579                         if (nla_put_u32(msg, i,
17580                                    ieee80211_channel_to_khz(req->channels[i])))
17581                                 goto nla_put_failure;
17582                 }
17583                 nla_nest_end(msg, nest);
17584         } else {
17585                 nest = nla_nest_start_noflag(msg,
17586                                              NL80211_ATTR_SCAN_FREQUENCIES);
17587                 if (!nest)
17588                         goto nla_put_failure;
17589                 for (i = 0; i < req->n_channels; i++) {
17590                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17591                                 goto nla_put_failure;
17592                 }
17593                 nla_nest_end(msg, nest);
17594         }
17595
17596         if (req->ie &&
17597             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17598                 goto nla_put_failure;
17599
17600         if (req->flags &&
17601             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17602                 goto nla_put_failure;
17603
17604         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17605                 &rdev->scan_req->info;
17606         if (info->scan_start_tsf &&
17607             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17608                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17609              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17610                      info->tsf_bssid)))
17611                 goto nla_put_failure;
17612
17613         return 0;
17614  nla_put_failure:
17615         return -ENOBUFS;
17616 }
17617
17618 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17619                                  struct cfg80211_registered_device *rdev,
17620                                  struct wireless_dev *wdev,
17621                                  u32 portid, u32 seq, int flags,
17622                                  u32 cmd)
17623 {
17624         void *hdr;
17625
17626         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17627         if (!hdr)
17628                 return -1;
17629
17630         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17631             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17632                                          wdev->netdev->ifindex)) ||
17633             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17634                               NL80211_ATTR_PAD))
17635                 goto nla_put_failure;
17636
17637         /* ignore errors and send incomplete event anyway */
17638         nl80211_add_scan_req(msg, rdev);
17639
17640         genlmsg_end(msg, hdr);
17641         return 0;
17642
17643  nla_put_failure:
17644         genlmsg_cancel(msg, hdr);
17645         return -EMSGSIZE;
17646 }
17647
17648 static int
17649 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17650                             struct cfg80211_sched_scan_request *req, u32 cmd)
17651 {
17652         void *hdr;
17653
17654         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17655         if (!hdr)
17656                 return -1;
17657
17658         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17659                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17660             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17661             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17662                               NL80211_ATTR_PAD))
17663                 goto nla_put_failure;
17664
17665         genlmsg_end(msg, hdr);
17666         return 0;
17667
17668  nla_put_failure:
17669         genlmsg_cancel(msg, hdr);
17670         return -EMSGSIZE;
17671 }
17672
17673 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17674                              struct wireless_dev *wdev)
17675 {
17676         struct sk_buff *msg;
17677
17678         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17679         if (!msg)
17680                 return;
17681
17682         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17683                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17684                 nlmsg_free(msg);
17685                 return;
17686         }
17687
17688         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17689                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17690 }
17691
17692 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17693                                        struct wireless_dev *wdev, bool aborted)
17694 {
17695         struct sk_buff *msg;
17696
17697         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17698         if (!msg)
17699                 return NULL;
17700
17701         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17702                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17703                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17704                 nlmsg_free(msg);
17705                 return NULL;
17706         }
17707
17708         return msg;
17709 }
17710
17711 /* send message created by nl80211_build_scan_msg() */
17712 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17713                            struct sk_buff *msg)
17714 {
17715         if (!msg)
17716                 return;
17717
17718         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17719                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17720 }
17721
17722 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17723 {
17724         struct sk_buff *msg;
17725
17726         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17727         if (!msg)
17728                 return;
17729
17730         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17731                 nlmsg_free(msg);
17732                 return;
17733         }
17734
17735         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17736                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17737 }
17738
17739 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17740                                           struct regulatory_request *request)
17741 {
17742         /* Userspace can always count this one always being set */
17743         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17744                 goto nla_put_failure;
17745
17746         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17747                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17748                                NL80211_REGDOM_TYPE_WORLD))
17749                         goto nla_put_failure;
17750         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17751                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17752                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17753                         goto nla_put_failure;
17754         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17755                    request->intersect) {
17756                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17757                                NL80211_REGDOM_TYPE_INTERSECTION))
17758                         goto nla_put_failure;
17759         } else {
17760                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17761                                NL80211_REGDOM_TYPE_COUNTRY) ||
17762                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17763                                    request->alpha2))
17764                         goto nla_put_failure;
17765         }
17766
17767         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17768                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17769
17770                 if (wiphy &&
17771                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17772                         goto nla_put_failure;
17773
17774                 if (wiphy &&
17775                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17776                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17777                         goto nla_put_failure;
17778         }
17779
17780         return true;
17781
17782 nla_put_failure:
17783         return false;
17784 }
17785
17786 /*
17787  * This can happen on global regulatory changes or device specific settings
17788  * based on custom regulatory domains.
17789  */
17790 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17791                                      struct regulatory_request *request)
17792 {
17793         struct sk_buff *msg;
17794         void *hdr;
17795
17796         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17797         if (!msg)
17798                 return;
17799
17800         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17801         if (!hdr)
17802                 goto nla_put_failure;
17803
17804         if (!nl80211_reg_change_event_fill(msg, request))
17805                 goto nla_put_failure;
17806
17807         genlmsg_end(msg, hdr);
17808
17809         rcu_read_lock();
17810         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17811                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17812         rcu_read_unlock();
17813
17814         return;
17815
17816 nla_put_failure:
17817         nlmsg_free(msg);
17818 }
17819
17820 struct nl80211_mlme_event {
17821         enum nl80211_commands cmd;
17822         const u8 *buf;
17823         size_t buf_len;
17824         int uapsd_queues;
17825         const u8 *req_ies;
17826         size_t req_ies_len;
17827         bool reconnect;
17828 };
17829
17830 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17831                                     struct net_device *netdev,
17832                                     const struct nl80211_mlme_event *event,
17833                                     gfp_t gfp)
17834 {
17835         struct sk_buff *msg;
17836         void *hdr;
17837
17838         msg = nlmsg_new(100 + event->buf_len + event->req_ies_len, gfp);
17839         if (!msg)
17840                 return;
17841
17842         hdr = nl80211hdr_put(msg, 0, 0, 0, event->cmd);
17843         if (!hdr) {
17844                 nlmsg_free(msg);
17845                 return;
17846         }
17847
17848         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17849             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17850             nla_put(msg, NL80211_ATTR_FRAME, event->buf_len, event->buf) ||
17851             (event->req_ies &&
17852              nla_put(msg, NL80211_ATTR_REQ_IE, event->req_ies_len,
17853                      event->req_ies)))
17854                 goto nla_put_failure;
17855
17856         if (event->reconnect &&
17857             nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17858                 goto nla_put_failure;
17859
17860         if (event->uapsd_queues >= 0) {
17861                 struct nlattr *nla_wmm =
17862                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17863                 if (!nla_wmm)
17864                         goto nla_put_failure;
17865
17866                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17867                                event->uapsd_queues))
17868                         goto nla_put_failure;
17869
17870                 nla_nest_end(msg, nla_wmm);
17871         }
17872
17873         genlmsg_end(msg, hdr);
17874
17875         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17876                                 NL80211_MCGRP_MLME, gfp);
17877         return;
17878
17879  nla_put_failure:
17880         nlmsg_free(msg);
17881 }
17882
17883 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17884                           struct net_device *netdev, const u8 *buf,
17885                           size_t len, gfp_t gfp)
17886 {
17887         struct nl80211_mlme_event event = {
17888                 .cmd = NL80211_CMD_AUTHENTICATE,
17889                 .buf = buf,
17890                 .buf_len = len,
17891                 .uapsd_queues = -1,
17892         };
17893
17894         nl80211_send_mlme_event(rdev, netdev, &event, gfp);
17895 }
17896
17897 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17898                            struct net_device *netdev,
17899                            const struct cfg80211_rx_assoc_resp_data *data)
17900 {
17901         struct nl80211_mlme_event event = {
17902                 .cmd = NL80211_CMD_ASSOCIATE,
17903                 .buf = data->buf,
17904                 .buf_len = data->len,
17905                 .uapsd_queues = data->uapsd_queues,
17906                 .req_ies = data->req_ies,
17907                 .req_ies_len = data->req_ies_len,
17908         };
17909
17910         nl80211_send_mlme_event(rdev, netdev, &event, GFP_KERNEL);
17911 }
17912
17913 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17914                          struct net_device *netdev, const u8 *buf,
17915                          size_t len, bool reconnect, gfp_t gfp)
17916 {
17917         struct nl80211_mlme_event event = {
17918                 .cmd = NL80211_CMD_DEAUTHENTICATE,
17919                 .buf = buf,
17920                 .buf_len = len,
17921                 .reconnect = reconnect,
17922                 .uapsd_queues = -1,
17923         };
17924
17925         nl80211_send_mlme_event(rdev, netdev, &event, gfp);
17926 }
17927
17928 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17929                            struct net_device *netdev, const u8 *buf,
17930                            size_t len, bool reconnect, gfp_t gfp)
17931 {
17932         struct nl80211_mlme_event event = {
17933                 .cmd = NL80211_CMD_DISASSOCIATE,
17934                 .buf = buf,
17935                 .buf_len = len,
17936                 .reconnect = reconnect,
17937                 .uapsd_queues = -1,
17938         };
17939
17940         nl80211_send_mlme_event(rdev, netdev, &event, gfp);
17941 }
17942
17943 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17944                                   size_t len)
17945 {
17946         struct wireless_dev *wdev = dev->ieee80211_ptr;
17947         struct wiphy *wiphy = wdev->wiphy;
17948         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17949         const struct ieee80211_mgmt *mgmt = (void *)buf;
17950         struct nl80211_mlme_event event = {
17951                 .buf = buf,
17952                 .buf_len = len,
17953                 .uapsd_queues = -1,
17954         };
17955
17956         if (WARN_ON(len < 2))
17957                 return;
17958
17959         if (ieee80211_is_deauth(mgmt->frame_control)) {
17960                 event.cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
17961         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
17962                 event.cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
17963         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
17964                 if (wdev->unprot_beacon_reported &&
17965                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
17966                         return;
17967                 event.cmd = NL80211_CMD_UNPROT_BEACON;
17968                 wdev->unprot_beacon_reported = jiffies;
17969         } else {
17970                 return;
17971         }
17972
17973         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
17974         nl80211_send_mlme_event(rdev, dev, &event, GFP_ATOMIC);
17975 }
17976 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
17977
17978 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
17979                                       struct net_device *netdev, int cmd,
17980                                       const u8 *addr, gfp_t gfp)
17981 {
17982         struct sk_buff *msg;
17983         void *hdr;
17984
17985         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17986         if (!msg)
17987                 return;
17988
17989         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17990         if (!hdr) {
17991                 nlmsg_free(msg);
17992                 return;
17993         }
17994
17995         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17996             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17997             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17998             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
17999                 goto nla_put_failure;
18000
18001         genlmsg_end(msg, hdr);
18002
18003         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18004                                 NL80211_MCGRP_MLME, gfp);
18005         return;
18006
18007  nla_put_failure:
18008         nlmsg_free(msg);
18009 }
18010
18011 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
18012                                struct net_device *netdev, const u8 *addr,
18013                                gfp_t gfp)
18014 {
18015         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
18016                                   addr, gfp);
18017 }
18018
18019 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
18020                                 struct net_device *netdev, const u8 *addr,
18021                                 gfp_t gfp)
18022 {
18023         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
18024                                   addr, gfp);
18025 }
18026
18027 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
18028                                  struct net_device *netdev,
18029                                  struct cfg80211_connect_resp_params *cr,
18030                                  gfp_t gfp)
18031 {
18032         struct sk_buff *msg;
18033         void *hdr;
18034         unsigned int link;
18035         size_t link_info_size = 0;
18036         const u8 *connected_addr = cr->valid_links ?
18037                                    cr->ap_mld_addr : cr->links[0].bssid;
18038
18039         if (cr->valid_links) {
18040                 for_each_valid_link(cr, link) {
18041                         /* Nested attribute header */
18042                         link_info_size += NLA_HDRLEN;
18043                         /* Link ID */
18044                         link_info_size += nla_total_size(sizeof(u8));
18045                         link_info_size += cr->links[link].addr ?
18046                                           nla_total_size(ETH_ALEN) : 0;
18047                         link_info_size += (cr->links[link].bssid ||
18048                                            cr->links[link].bss) ?
18049                                           nla_total_size(ETH_ALEN) : 0;
18050                         link_info_size += nla_total_size(sizeof(u16));
18051                 }
18052         }
18053
18054         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
18055                         cr->fils.kek_len + cr->fils.pmk_len +
18056                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
18057                         gfp);
18058         if (!msg)
18059                 return;
18060
18061         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
18062         if (!hdr) {
18063                 nlmsg_free(msg);
18064                 return;
18065         }
18066
18067         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18068             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18069             (connected_addr &&
18070              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
18071             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18072                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
18073                         cr->status) ||
18074             (cr->status < 0 &&
18075              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18076               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
18077                           cr->timeout_reason))) ||
18078             (cr->req_ie &&
18079              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
18080             (cr->resp_ie &&
18081              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
18082                      cr->resp_ie)) ||
18083             (cr->fils.update_erp_next_seq_num &&
18084              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18085                          cr->fils.erp_next_seq_num)) ||
18086             (cr->status == WLAN_STATUS_SUCCESS &&
18087              ((cr->fils.kek &&
18088                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
18089                        cr->fils.kek)) ||
18090               (cr->fils.pmk &&
18091                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
18092               (cr->fils.pmkid &&
18093                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
18094                 goto nla_put_failure;
18095
18096         if (cr->valid_links) {
18097                 int i = 1;
18098                 struct nlattr *nested;
18099
18100                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18101                 if (!nested)
18102                         goto nla_put_failure;
18103
18104                 for_each_valid_link(cr, link) {
18105                         struct nlattr *nested_mlo_links;
18106                         const u8 *bssid = cr->links[link].bss ?
18107                                           cr->links[link].bss->bssid :
18108                                           cr->links[link].bssid;
18109
18110                         nested_mlo_links = nla_nest_start(msg, i);
18111                         if (!nested_mlo_links)
18112                                 goto nla_put_failure;
18113
18114                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18115                             (bssid &&
18116                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18117                             (cr->links[link].addr &&
18118                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18119                                      cr->links[link].addr)) ||
18120                             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18121                                         cr->links[link].status))
18122                                 goto nla_put_failure;
18123
18124                         nla_nest_end(msg, nested_mlo_links);
18125                         i++;
18126                 }
18127                 nla_nest_end(msg, nested);
18128         }
18129
18130         genlmsg_end(msg, hdr);
18131
18132         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18133                                 NL80211_MCGRP_MLME, gfp);
18134         return;
18135
18136  nla_put_failure:
18137         nlmsg_free(msg);
18138 }
18139
18140 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
18141                          struct net_device *netdev,
18142                          struct cfg80211_roam_info *info, gfp_t gfp)
18143 {
18144         struct sk_buff *msg;
18145         void *hdr;
18146         size_t link_info_size = 0;
18147         unsigned int link;
18148         const u8 *connected_addr = info->ap_mld_addr ?
18149                                    info->ap_mld_addr :
18150                                    (info->links[0].bss ?
18151                                     info->links[0].bss->bssid :
18152                                     info->links[0].bssid);
18153
18154         if (info->valid_links) {
18155                 for_each_valid_link(info, link) {
18156                         /* Nested attribute header */
18157                         link_info_size += NLA_HDRLEN;
18158                         /* Link ID */
18159                         link_info_size += nla_total_size(sizeof(u8));
18160                         link_info_size += info->links[link].addr ?
18161                                           nla_total_size(ETH_ALEN) : 0;
18162                         link_info_size += (info->links[link].bssid ||
18163                                            info->links[link].bss) ?
18164                                           nla_total_size(ETH_ALEN) : 0;
18165                 }
18166         }
18167
18168         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
18169                         info->fils.kek_len + info->fils.pmk_len +
18170                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
18171                         link_info_size, gfp);
18172         if (!msg)
18173                 return;
18174
18175         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
18176         if (!hdr) {
18177                 nlmsg_free(msg);
18178                 return;
18179         }
18180
18181         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18182             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18183             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
18184             (info->req_ie &&
18185              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
18186                      info->req_ie)) ||
18187             (info->resp_ie &&
18188              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
18189                      info->resp_ie)) ||
18190             (info->fils.update_erp_next_seq_num &&
18191              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18192                          info->fils.erp_next_seq_num)) ||
18193             (info->fils.kek &&
18194              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
18195                      info->fils.kek)) ||
18196             (info->fils.pmk &&
18197              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
18198             (info->fils.pmkid &&
18199              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
18200                 goto nla_put_failure;
18201
18202         if (info->valid_links) {
18203                 int i = 1;
18204                 struct nlattr *nested;
18205
18206                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18207                 if (!nested)
18208                         goto nla_put_failure;
18209
18210                 for_each_valid_link(info, link) {
18211                         struct nlattr *nested_mlo_links;
18212                         const u8 *bssid = info->links[link].bss ?
18213                                           info->links[link].bss->bssid :
18214                                           info->links[link].bssid;
18215
18216                         nested_mlo_links = nla_nest_start(msg, i);
18217                         if (!nested_mlo_links)
18218                                 goto nla_put_failure;
18219
18220                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18221                             (bssid &&
18222                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18223                             (info->links[link].addr &&
18224                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18225                                      info->links[link].addr)))
18226                                 goto nla_put_failure;
18227
18228                         nla_nest_end(msg, nested_mlo_links);
18229                         i++;
18230                 }
18231                 nla_nest_end(msg, nested);
18232         }
18233
18234         genlmsg_end(msg, hdr);
18235
18236         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18237                                 NL80211_MCGRP_MLME, gfp);
18238         return;
18239
18240  nla_put_failure:
18241         nlmsg_free(msg);
18242 }
18243
18244 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
18245                                   struct net_device *netdev, const u8 *peer_addr,
18246                                   const u8 *td_bitmap, u8 td_bitmap_len)
18247 {
18248         struct sk_buff *msg;
18249         void *hdr;
18250
18251         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18252         if (!msg)
18253                 return;
18254
18255         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
18256         if (!hdr) {
18257                 nlmsg_free(msg);
18258                 return;
18259         }
18260
18261         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18262             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18263             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer_addr))
18264                 goto nla_put_failure;
18265
18266         if ((td_bitmap_len > 0) && td_bitmap)
18267                 if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
18268                             td_bitmap_len, td_bitmap))
18269                         goto nla_put_failure;
18270
18271         genlmsg_end(msg, hdr);
18272
18273         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18274                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18275         return;
18276
18277  nla_put_failure:
18278         nlmsg_free(msg);
18279 }
18280
18281 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
18282                                struct net_device *netdev, u16 reason,
18283                                const u8 *ie, size_t ie_len, bool from_ap)
18284 {
18285         struct sk_buff *msg;
18286         void *hdr;
18287
18288         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
18289         if (!msg)
18290                 return;
18291
18292         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
18293         if (!hdr) {
18294                 nlmsg_free(msg);
18295                 return;
18296         }
18297
18298         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18299             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18300             (reason &&
18301              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
18302             (from_ap &&
18303              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
18304             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
18305                 goto nla_put_failure;
18306
18307         genlmsg_end(msg, hdr);
18308
18309         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18310                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18311         return;
18312
18313  nla_put_failure:
18314         nlmsg_free(msg);
18315 }
18316
18317 void cfg80211_links_removed(struct net_device *dev, u16 link_mask)
18318 {
18319         struct wireless_dev *wdev = dev->ieee80211_ptr;
18320         struct wiphy *wiphy = wdev->wiphy;
18321         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18322         struct sk_buff *msg;
18323         struct nlattr *links;
18324         void *hdr;
18325
18326         lockdep_assert_wiphy(wdev->wiphy);
18327         trace_cfg80211_links_removed(dev, link_mask);
18328
18329         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
18330                     wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
18331                 return;
18332
18333         if (WARN_ON(!wdev->valid_links || !link_mask ||
18334                     (wdev->valid_links & link_mask) != link_mask ||
18335                     wdev->valid_links == link_mask))
18336                 return;
18337
18338         cfg80211_wdev_release_link_bsses(wdev, link_mask);
18339         wdev->valid_links &= ~link_mask;
18340
18341         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18342         if (!msg)
18343                 return;
18344
18345         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_LINKS_REMOVED);
18346         if (!hdr) {
18347                 nlmsg_free(msg);
18348                 return;
18349         }
18350
18351         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18352             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18353                 goto nla_put_failure;
18354
18355         links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18356         if (!links)
18357                 goto nla_put_failure;
18358
18359         while (link_mask) {
18360                 struct nlattr *link;
18361                 int link_id = __ffs(link_mask);
18362
18363                 link = nla_nest_start(msg, link_id + 1);
18364                 if (!link)
18365                         goto nla_put_failure;
18366
18367                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18368                         goto nla_put_failure;
18369
18370                 nla_nest_end(msg, link);
18371                 link_mask &= ~(1 << link_id);
18372         }
18373
18374         nla_nest_end(msg, links);
18375
18376         genlmsg_end(msg, hdr);
18377
18378         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18379                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18380         return;
18381
18382  nla_put_failure:
18383         nlmsg_free(msg);
18384 }
18385 EXPORT_SYMBOL(cfg80211_links_removed);
18386
18387 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18388                              struct net_device *netdev, const u8 *bssid,
18389                              gfp_t gfp)
18390 {
18391         struct sk_buff *msg;
18392         void *hdr;
18393
18394         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18395         if (!msg)
18396                 return;
18397
18398         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18399         if (!hdr) {
18400                 nlmsg_free(msg);
18401                 return;
18402         }
18403
18404         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18405             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18406             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18407                 goto nla_put_failure;
18408
18409         genlmsg_end(msg, hdr);
18410
18411         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18412                                 NL80211_MCGRP_MLME, gfp);
18413         return;
18414
18415  nla_put_failure:
18416         nlmsg_free(msg);
18417 }
18418
18419 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18420                                         const u8 *ie, u8 ie_len,
18421                                         int sig_dbm, gfp_t gfp)
18422 {
18423         struct wireless_dev *wdev = dev->ieee80211_ptr;
18424         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18425         struct sk_buff *msg;
18426         void *hdr;
18427
18428         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18429                 return;
18430
18431         trace_cfg80211_notify_new_peer_candidate(dev, addr);
18432
18433         msg = nlmsg_new(100 + ie_len, gfp);
18434         if (!msg)
18435                 return;
18436
18437         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18438         if (!hdr) {
18439                 nlmsg_free(msg);
18440                 return;
18441         }
18442
18443         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18444             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18445             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18446             (ie_len && ie &&
18447              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18448             (sig_dbm &&
18449              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18450                 goto nla_put_failure;
18451
18452         genlmsg_end(msg, hdr);
18453
18454         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18455                                 NL80211_MCGRP_MLME, gfp);
18456         return;
18457
18458  nla_put_failure:
18459         nlmsg_free(msg);
18460 }
18461 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18462
18463 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18464                                  struct net_device *netdev, const u8 *addr,
18465                                  enum nl80211_key_type key_type, int key_id,
18466                                  const u8 *tsc, gfp_t gfp)
18467 {
18468         struct sk_buff *msg;
18469         void *hdr;
18470
18471         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18472         if (!msg)
18473                 return;
18474
18475         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18476         if (!hdr) {
18477                 nlmsg_free(msg);
18478                 return;
18479         }
18480
18481         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18482             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18483             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18484             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18485             (key_id != -1 &&
18486              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18487             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18488                 goto nla_put_failure;
18489
18490         genlmsg_end(msg, hdr);
18491
18492         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18493                                 NL80211_MCGRP_MLME, gfp);
18494         return;
18495
18496  nla_put_failure:
18497         nlmsg_free(msg);
18498 }
18499
18500 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18501                                     struct ieee80211_channel *channel_before,
18502                                     struct ieee80211_channel *channel_after)
18503 {
18504         struct sk_buff *msg;
18505         void *hdr;
18506         struct nlattr *nl_freq;
18507
18508         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18509         if (!msg)
18510                 return;
18511
18512         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18513         if (!hdr) {
18514                 nlmsg_free(msg);
18515                 return;
18516         }
18517
18518         /*
18519          * Since we are applying the beacon hint to a wiphy we know its
18520          * wiphy_idx is valid
18521          */
18522         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18523                 goto nla_put_failure;
18524
18525         /* Before */
18526         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18527         if (!nl_freq)
18528                 goto nla_put_failure;
18529
18530         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18531                 goto nla_put_failure;
18532         nla_nest_end(msg, nl_freq);
18533
18534         /* After */
18535         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18536         if (!nl_freq)
18537                 goto nla_put_failure;
18538
18539         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18540                 goto nla_put_failure;
18541         nla_nest_end(msg, nl_freq);
18542
18543         genlmsg_end(msg, hdr);
18544
18545         rcu_read_lock();
18546         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18547                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18548         rcu_read_unlock();
18549
18550         return;
18551
18552 nla_put_failure:
18553         nlmsg_free(msg);
18554 }
18555
18556 static void nl80211_send_remain_on_chan_event(
18557         int cmd, struct cfg80211_registered_device *rdev,
18558         struct wireless_dev *wdev, u64 cookie,
18559         struct ieee80211_channel *chan,
18560         unsigned int duration, gfp_t gfp)
18561 {
18562         struct sk_buff *msg;
18563         void *hdr;
18564
18565         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18566         if (!msg)
18567                 return;
18568
18569         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18570         if (!hdr) {
18571                 nlmsg_free(msg);
18572                 return;
18573         }
18574
18575         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18576             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18577                                          wdev->netdev->ifindex)) ||
18578             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18579                               NL80211_ATTR_PAD) ||
18580             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18581             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18582                         NL80211_CHAN_NO_HT) ||
18583             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18584                               NL80211_ATTR_PAD))
18585                 goto nla_put_failure;
18586
18587         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18588             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18589                 goto nla_put_failure;
18590
18591         genlmsg_end(msg, hdr);
18592
18593         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18594                                 NL80211_MCGRP_MLME, gfp);
18595         return;
18596
18597  nla_put_failure:
18598         nlmsg_free(msg);
18599 }
18600
18601 void cfg80211_assoc_comeback(struct net_device *netdev,
18602                              const u8 *ap_addr, u32 timeout)
18603 {
18604         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18605         struct wiphy *wiphy = wdev->wiphy;
18606         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18607         struct sk_buff *msg;
18608         void *hdr;
18609
18610         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18611
18612         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18613         if (!msg)
18614                 return;
18615
18616         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18617         if (!hdr) {
18618                 nlmsg_free(msg);
18619                 return;
18620         }
18621
18622         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18623             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18624             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18625             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18626                 goto nla_put_failure;
18627
18628         genlmsg_end(msg, hdr);
18629
18630         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18631                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18632         return;
18633
18634  nla_put_failure:
18635         nlmsg_free(msg);
18636 }
18637 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18638
18639 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18640                                struct ieee80211_channel *chan,
18641                                unsigned int duration, gfp_t gfp)
18642 {
18643         struct wiphy *wiphy = wdev->wiphy;
18644         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18645
18646         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18647         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18648                                           rdev, wdev, cookie, chan,
18649                                           duration, gfp);
18650 }
18651 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18652
18653 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18654                                         struct ieee80211_channel *chan,
18655                                         gfp_t gfp)
18656 {
18657         struct wiphy *wiphy = wdev->wiphy;
18658         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18659
18660         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18661         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18662                                           rdev, wdev, cookie, chan, 0, gfp);
18663 }
18664 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18665
18666 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18667                                         struct ieee80211_channel *chan,
18668                                         gfp_t gfp)
18669 {
18670         struct wiphy *wiphy = wdev->wiphy;
18671         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18672
18673         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18674         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18675                                           rdev, wdev, cookie, chan, 0, gfp);
18676 }
18677 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18678
18679 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18680                       struct station_info *sinfo, gfp_t gfp)
18681 {
18682         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18683         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18684         struct sk_buff *msg;
18685
18686         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18687
18688         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18689         if (!msg)
18690                 return;
18691
18692         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18693                                  rdev, dev, mac_addr, sinfo) < 0) {
18694                 nlmsg_free(msg);
18695                 return;
18696         }
18697
18698         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18699                                 NL80211_MCGRP_MLME, gfp);
18700 }
18701 EXPORT_SYMBOL(cfg80211_new_sta);
18702
18703 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18704                             struct station_info *sinfo, gfp_t gfp)
18705 {
18706         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18707         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18708         struct sk_buff *msg;
18709         struct station_info empty_sinfo = {};
18710
18711         if (!sinfo)
18712                 sinfo = &empty_sinfo;
18713
18714         trace_cfg80211_del_sta(dev, mac_addr);
18715
18716         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18717         if (!msg) {
18718                 cfg80211_sinfo_release_content(sinfo);
18719                 return;
18720         }
18721
18722         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18723                                  rdev, dev, mac_addr, sinfo) < 0) {
18724                 nlmsg_free(msg);
18725                 return;
18726         }
18727
18728         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18729                                 NL80211_MCGRP_MLME, gfp);
18730 }
18731 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18732
18733 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18734                           enum nl80211_connect_failed_reason reason,
18735                           gfp_t gfp)
18736 {
18737         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18738         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18739         struct sk_buff *msg;
18740         void *hdr;
18741
18742         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18743         if (!msg)
18744                 return;
18745
18746         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18747         if (!hdr) {
18748                 nlmsg_free(msg);
18749                 return;
18750         }
18751
18752         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18753             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18754             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18755                 goto nla_put_failure;
18756
18757         genlmsg_end(msg, hdr);
18758
18759         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18760                                 NL80211_MCGRP_MLME, gfp);
18761         return;
18762
18763  nla_put_failure:
18764         nlmsg_free(msg);
18765 }
18766 EXPORT_SYMBOL(cfg80211_conn_failed);
18767
18768 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18769                                        const u8 *addr, gfp_t gfp)
18770 {
18771         struct wireless_dev *wdev = dev->ieee80211_ptr;
18772         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18773         struct sk_buff *msg;
18774         void *hdr;
18775         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18776
18777         if (!nlportid)
18778                 return false;
18779
18780         msg = nlmsg_new(100, gfp);
18781         if (!msg)
18782                 return true;
18783
18784         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18785         if (!hdr) {
18786                 nlmsg_free(msg);
18787                 return true;
18788         }
18789
18790         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18791             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18792             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18793                 goto nla_put_failure;
18794
18795         genlmsg_end(msg, hdr);
18796         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18797         return true;
18798
18799  nla_put_failure:
18800         nlmsg_free(msg);
18801         return true;
18802 }
18803
18804 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18805                                 const u8 *addr, gfp_t gfp)
18806 {
18807         struct wireless_dev *wdev = dev->ieee80211_ptr;
18808         bool ret;
18809
18810         trace_cfg80211_rx_spurious_frame(dev, addr);
18811
18812         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18813                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18814                 trace_cfg80211_return_bool(false);
18815                 return false;
18816         }
18817         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18818                                          addr, gfp);
18819         trace_cfg80211_return_bool(ret);
18820         return ret;
18821 }
18822 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18823
18824 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18825                                         const u8 *addr, gfp_t gfp)
18826 {
18827         struct wireless_dev *wdev = dev->ieee80211_ptr;
18828         bool ret;
18829
18830         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18831
18832         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18833                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18834                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18835                 trace_cfg80211_return_bool(false);
18836                 return false;
18837         }
18838         ret = __nl80211_unexpected_frame(dev,
18839                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18840                                          addr, gfp);
18841         trace_cfg80211_return_bool(ret);
18842         return ret;
18843 }
18844 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18845
18846 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18847                       struct wireless_dev *wdev, u32 nlportid,
18848                       struct cfg80211_rx_info *info, gfp_t gfp)
18849 {
18850         struct net_device *netdev = wdev->netdev;
18851         struct sk_buff *msg;
18852         void *hdr;
18853
18854         msg = nlmsg_new(100 + info->len, gfp);
18855         if (!msg)
18856                 return -ENOMEM;
18857
18858         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18859         if (!hdr) {
18860                 nlmsg_free(msg);
18861                 return -ENOMEM;
18862         }
18863
18864         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18865             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18866                                         netdev->ifindex)) ||
18867             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18868                               NL80211_ATTR_PAD) ||
18869             (info->have_link_id &&
18870              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18871             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18872             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18873             (info->sig_dbm &&
18874              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18875             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18876             (info->flags &&
18877              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18878             (info->rx_tstamp && nla_put_u64_64bit(msg,
18879                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18880                                                   info->rx_tstamp,
18881                                                   NL80211_ATTR_PAD)) ||
18882             (info->ack_tstamp && nla_put_u64_64bit(msg,
18883                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18884                                                    info->ack_tstamp,
18885                                                    NL80211_ATTR_PAD)))
18886                 goto nla_put_failure;
18887
18888         genlmsg_end(msg, hdr);
18889
18890         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18891
18892  nla_put_failure:
18893         nlmsg_free(msg);
18894         return -ENOBUFS;
18895 }
18896
18897 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18898                                     struct cfg80211_tx_status *status,
18899                                     gfp_t gfp, enum nl80211_commands command)
18900 {
18901         struct wiphy *wiphy = wdev->wiphy;
18902         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18903         struct net_device *netdev = wdev->netdev;
18904         struct sk_buff *msg;
18905         void *hdr;
18906
18907         if (command == NL80211_CMD_FRAME_TX_STATUS)
18908                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18909                                               status->ack);
18910         else
18911                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18912                                                       status->ack);
18913
18914         msg = nlmsg_new(100 + status->len, gfp);
18915         if (!msg)
18916                 return;
18917
18918         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18919         if (!hdr) {
18920                 nlmsg_free(msg);
18921                 return;
18922         }
18923
18924         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18925             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18926                                    netdev->ifindex)) ||
18927             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18928                               NL80211_ATTR_PAD) ||
18929             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18930             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18931                               NL80211_ATTR_PAD) ||
18932             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18933             (status->tx_tstamp &&
18934              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18935                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18936             (status->ack_tstamp &&
18937              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18938                                status->ack_tstamp, NL80211_ATTR_PAD)))
18939                 goto nla_put_failure;
18940
18941         genlmsg_end(msg, hdr);
18942
18943         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18944                                 NL80211_MCGRP_MLME, gfp);
18945         return;
18946
18947 nla_put_failure:
18948         nlmsg_free(msg);
18949 }
18950
18951 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
18952                                      const u8 *buf, size_t len, bool ack,
18953                                      gfp_t gfp)
18954 {
18955         struct cfg80211_tx_status status = {
18956                 .cookie = cookie,
18957                 .buf = buf,
18958                 .len = len,
18959                 .ack = ack
18960         };
18961
18962         nl80211_frame_tx_status(wdev, &status, gfp,
18963                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
18964 }
18965 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
18966
18967 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
18968                                  struct cfg80211_tx_status *status, gfp_t gfp)
18969 {
18970         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
18971 }
18972 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
18973
18974 static int __nl80211_rx_control_port(struct net_device *dev,
18975                                      struct sk_buff *skb,
18976                                      bool unencrypted,
18977                                      int link_id,
18978                                      gfp_t gfp)
18979 {
18980         struct wireless_dev *wdev = dev->ieee80211_ptr;
18981         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18982         struct ethhdr *ehdr = eth_hdr(skb);
18983         const u8 *addr = ehdr->h_source;
18984         u16 proto = be16_to_cpu(skb->protocol);
18985         struct sk_buff *msg;
18986         void *hdr;
18987         struct nlattr *frame;
18988
18989         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
18990
18991         if (!nlportid)
18992                 return -ENOENT;
18993
18994         msg = nlmsg_new(100 + skb->len, gfp);
18995         if (!msg)
18996                 return -ENOMEM;
18997
18998         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
18999         if (!hdr) {
19000                 nlmsg_free(msg);
19001                 return -ENOBUFS;
19002         }
19003
19004         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19005             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19006             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19007                               NL80211_ATTR_PAD) ||
19008             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19009             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
19010             (link_id >= 0 &&
19011              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) ||
19012             (unencrypted && nla_put_flag(msg,
19013                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
19014                 goto nla_put_failure;
19015
19016         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
19017         if (!frame)
19018                 goto nla_put_failure;
19019
19020         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
19021         genlmsg_end(msg, hdr);
19022
19023         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19024
19025  nla_put_failure:
19026         nlmsg_free(msg);
19027         return -ENOBUFS;
19028 }
19029
19030 bool cfg80211_rx_control_port(struct net_device *dev, struct sk_buff *skb,
19031                               bool unencrypted, int link_id)
19032 {
19033         int ret;
19034
19035         trace_cfg80211_rx_control_port(dev, skb, unencrypted, link_id);
19036         ret = __nl80211_rx_control_port(dev, skb, unencrypted, link_id,
19037                                         GFP_ATOMIC);
19038         trace_cfg80211_return_bool(ret == 0);
19039         return ret == 0;
19040 }
19041 EXPORT_SYMBOL(cfg80211_rx_control_port);
19042
19043 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
19044                                             const char *mac, gfp_t gfp)
19045 {
19046         struct wireless_dev *wdev = dev->ieee80211_ptr;
19047         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19048         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19049         void **cb;
19050
19051         if (!msg)
19052                 return NULL;
19053
19054         cb = (void **)msg->cb;
19055
19056         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
19057         if (!cb[0]) {
19058                 nlmsg_free(msg);
19059                 return NULL;
19060         }
19061
19062         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19063             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19064                 goto nla_put_failure;
19065
19066         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19067                 goto nla_put_failure;
19068
19069         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
19070         if (!cb[1])
19071                 goto nla_put_failure;
19072
19073         cb[2] = rdev;
19074
19075         return msg;
19076  nla_put_failure:
19077         nlmsg_free(msg);
19078         return NULL;
19079 }
19080
19081 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
19082 {
19083         void **cb = (void **)msg->cb;
19084         struct cfg80211_registered_device *rdev = cb[2];
19085
19086         nla_nest_end(msg, cb[1]);
19087         genlmsg_end(msg, cb[0]);
19088
19089         memset(msg->cb, 0, sizeof(msg->cb));
19090
19091         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19092                                 NL80211_MCGRP_MLME, gfp);
19093 }
19094
19095 void cfg80211_cqm_rssi_notify(struct net_device *dev,
19096                               enum nl80211_cqm_rssi_threshold_event rssi_event,
19097                               s32 rssi_level, gfp_t gfp)
19098 {
19099         struct wireless_dev *wdev = dev->ieee80211_ptr;
19100         struct cfg80211_cqm_config *cqm_config;
19101
19102         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
19103
19104         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
19105                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
19106                 return;
19107
19108         rcu_read_lock();
19109         cqm_config = rcu_dereference(wdev->cqm_config);
19110         if (cqm_config) {
19111                 cqm_config->last_rssi_event_value = rssi_level;
19112                 cqm_config->last_rssi_event_type = rssi_event;
19113                 wiphy_work_queue(wdev->wiphy, &wdev->cqm_rssi_work);
19114         }
19115         rcu_read_unlock();
19116 }
19117 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
19118
19119 void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work)
19120 {
19121         struct wireless_dev *wdev = container_of(work, struct wireless_dev,
19122                                                  cqm_rssi_work);
19123         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19124         enum nl80211_cqm_rssi_threshold_event rssi_event;
19125         struct cfg80211_cqm_config *cqm_config;
19126         struct sk_buff *msg;
19127         s32 rssi_level;
19128
19129         cqm_config = wiphy_dereference(wdev->wiphy, wdev->cqm_config);
19130         if (!cqm_config)
19131                 return;
19132
19133         if (cqm_config->use_range_api)
19134                 cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config);
19135
19136         rssi_level = cqm_config->last_rssi_event_value;
19137         rssi_event = cqm_config->last_rssi_event_type;
19138
19139         msg = cfg80211_prepare_cqm(wdev->netdev, NULL, GFP_KERNEL);
19140         if (!msg)
19141                 return;
19142
19143         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
19144                         rssi_event))
19145                 goto nla_put_failure;
19146
19147         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
19148                                       rssi_level))
19149                 goto nla_put_failure;
19150
19151         cfg80211_send_cqm(msg, GFP_KERNEL);
19152
19153         return;
19154
19155  nla_put_failure:
19156         nlmsg_free(msg);
19157 }
19158
19159 void cfg80211_cqm_txe_notify(struct net_device *dev,
19160                              const u8 *peer, u32 num_packets,
19161                              u32 rate, u32 intvl, gfp_t gfp)
19162 {
19163         struct sk_buff *msg;
19164
19165         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19166         if (!msg)
19167                 return;
19168
19169         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
19170                 goto nla_put_failure;
19171
19172         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
19173                 goto nla_put_failure;
19174
19175         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
19176                 goto nla_put_failure;
19177
19178         cfg80211_send_cqm(msg, gfp);
19179         return;
19180
19181  nla_put_failure:
19182         nlmsg_free(msg);
19183 }
19184 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
19185
19186 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
19187                                  const u8 *peer, u32 num_packets, gfp_t gfp)
19188 {
19189         struct sk_buff *msg;
19190
19191         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
19192
19193         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19194         if (!msg)
19195                 return;
19196
19197         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
19198                 goto nla_put_failure;
19199
19200         cfg80211_send_cqm(msg, gfp);
19201         return;
19202
19203  nla_put_failure:
19204         nlmsg_free(msg);
19205 }
19206 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
19207
19208 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
19209 {
19210         struct sk_buff *msg;
19211
19212         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
19213         if (!msg)
19214                 return;
19215
19216         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
19217                 goto nla_put_failure;
19218
19219         cfg80211_send_cqm(msg, gfp);
19220         return;
19221
19222  nla_put_failure:
19223         nlmsg_free(msg);
19224 }
19225 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
19226
19227 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
19228                                      struct net_device *netdev, const u8 *bssid,
19229                                      const u8 *replay_ctr, gfp_t gfp)
19230 {
19231         struct sk_buff *msg;
19232         struct nlattr *rekey_attr;
19233         void *hdr;
19234
19235         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19236         if (!msg)
19237                 return;
19238
19239         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
19240         if (!hdr) {
19241                 nlmsg_free(msg);
19242                 return;
19243         }
19244
19245         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19246             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19247             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
19248                 goto nla_put_failure;
19249
19250         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
19251         if (!rekey_attr)
19252                 goto nla_put_failure;
19253
19254         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
19255                     NL80211_REPLAY_CTR_LEN, replay_ctr))
19256                 goto nla_put_failure;
19257
19258         nla_nest_end(msg, rekey_attr);
19259
19260         genlmsg_end(msg, hdr);
19261
19262         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19263                                 NL80211_MCGRP_MLME, gfp);
19264         return;
19265
19266  nla_put_failure:
19267         nlmsg_free(msg);
19268 }
19269
19270 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
19271                                const u8 *replay_ctr, gfp_t gfp)
19272 {
19273         struct wireless_dev *wdev = dev->ieee80211_ptr;
19274         struct wiphy *wiphy = wdev->wiphy;
19275         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19276
19277         trace_cfg80211_gtk_rekey_notify(dev, bssid);
19278         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
19279 }
19280 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
19281
19282 static void
19283 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
19284                                struct net_device *netdev, int index,
19285                                const u8 *bssid, bool preauth, gfp_t gfp)
19286 {
19287         struct sk_buff *msg;
19288         struct nlattr *attr;
19289         void *hdr;
19290
19291         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19292         if (!msg)
19293                 return;
19294
19295         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
19296         if (!hdr) {
19297                 nlmsg_free(msg);
19298                 return;
19299         }
19300
19301         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19302             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19303                 goto nla_put_failure;
19304
19305         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
19306         if (!attr)
19307                 goto nla_put_failure;
19308
19309         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
19310             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
19311             (preauth &&
19312              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
19313                 goto nla_put_failure;
19314
19315         nla_nest_end(msg, attr);
19316
19317         genlmsg_end(msg, hdr);
19318
19319         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19320                                 NL80211_MCGRP_MLME, gfp);
19321         return;
19322
19323  nla_put_failure:
19324         nlmsg_free(msg);
19325 }
19326
19327 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
19328                                      const u8 *bssid, bool preauth, gfp_t gfp)
19329 {
19330         struct wireless_dev *wdev = dev->ieee80211_ptr;
19331         struct wiphy *wiphy = wdev->wiphy;
19332         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19333
19334         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
19335         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
19336 }
19337 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
19338
19339 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
19340                                      struct net_device *netdev,
19341                                      unsigned int link_id,
19342                                      struct cfg80211_chan_def *chandef,
19343                                      gfp_t gfp,
19344                                      enum nl80211_commands notif,
19345                                      u8 count, bool quiet)
19346 {
19347         struct wireless_dev *wdev = netdev->ieee80211_ptr;
19348         struct sk_buff *msg;
19349         void *hdr;
19350
19351         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19352         if (!msg)
19353                 return;
19354
19355         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
19356         if (!hdr) {
19357                 nlmsg_free(msg);
19358                 return;
19359         }
19360
19361         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19362                 goto nla_put_failure;
19363
19364         if (wdev->valid_links &&
19365             nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
19366                 goto nla_put_failure;
19367
19368         if (nl80211_send_chandef(msg, chandef))
19369                 goto nla_put_failure;
19370
19371         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
19372                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
19373                         goto nla_put_failure;
19374                 if (quiet &&
19375                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
19376                         goto nla_put_failure;
19377         }
19378
19379         genlmsg_end(msg, hdr);
19380
19381         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19382                                 NL80211_MCGRP_MLME, gfp);
19383         return;
19384
19385  nla_put_failure:
19386         nlmsg_free(msg);
19387 }
19388
19389 void cfg80211_ch_switch_notify(struct net_device *dev,
19390                                struct cfg80211_chan_def *chandef,
19391                                unsigned int link_id)
19392 {
19393         struct wireless_dev *wdev = dev->ieee80211_ptr;
19394         struct wiphy *wiphy = wdev->wiphy;
19395         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19396
19397         lockdep_assert_wiphy(wdev->wiphy);
19398         WARN_INVALID_LINK_ID(wdev, link_id);
19399
19400         trace_cfg80211_ch_switch_notify(dev, chandef, link_id);
19401
19402         switch (wdev->iftype) {
19403         case NL80211_IFTYPE_STATION:
19404         case NL80211_IFTYPE_P2P_CLIENT:
19405                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19406                         cfg80211_update_assoc_bss_entry(wdev, link_id,
19407                                                         chandef->chan);
19408                 break;
19409         case NL80211_IFTYPE_MESH_POINT:
19410                 wdev->u.mesh.chandef = *chandef;
19411                 wdev->u.mesh.preset_chandef = *chandef;
19412                 break;
19413         case NL80211_IFTYPE_AP:
19414         case NL80211_IFTYPE_P2P_GO:
19415                 wdev->links[link_id].ap.chandef = *chandef;
19416                 break;
19417         case NL80211_IFTYPE_ADHOC:
19418                 wdev->u.ibss.chandef = *chandef;
19419                 break;
19420         default:
19421                 WARN_ON(1);
19422                 break;
19423         }
19424
19425         cfg80211_schedule_channels_check(wdev);
19426         cfg80211_sched_dfs_chan_update(rdev);
19427
19428         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19429                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
19430 }
19431 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19432
19433 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19434                                        struct cfg80211_chan_def *chandef,
19435                                        unsigned int link_id, u8 count,
19436                                        bool quiet)
19437 {
19438         struct wireless_dev *wdev = dev->ieee80211_ptr;
19439         struct wiphy *wiphy = wdev->wiphy;
19440         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19441
19442         lockdep_assert_wiphy(wdev->wiphy);
19443         WARN_INVALID_LINK_ID(wdev, link_id);
19444
19445         trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id);
19446
19447
19448         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19449                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19450                                  count, quiet);
19451 }
19452 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19453
19454 int cfg80211_bss_color_notify(struct net_device *dev,
19455                               enum nl80211_commands cmd, u8 count,
19456                               u64 color_bitmap)
19457 {
19458         struct wireless_dev *wdev = dev->ieee80211_ptr;
19459         struct wiphy *wiphy = wdev->wiphy;
19460         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19461         struct sk_buff *msg;
19462         void *hdr;
19463
19464         lockdep_assert_wiphy(wdev->wiphy);
19465
19466         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19467
19468         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19469         if (!msg)
19470                 return -ENOMEM;
19471
19472         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19473         if (!hdr)
19474                 goto nla_put_failure;
19475
19476         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19477                 goto nla_put_failure;
19478
19479         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19480             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19481                 goto nla_put_failure;
19482
19483         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19484             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19485                               color_bitmap, NL80211_ATTR_PAD))
19486                 goto nla_put_failure;
19487
19488         genlmsg_end(msg, hdr);
19489
19490         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19491                                        msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
19492
19493 nla_put_failure:
19494         nlmsg_free(msg);
19495         return -EINVAL;
19496 }
19497 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19498
19499 void
19500 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19501                      const struct cfg80211_chan_def *chandef,
19502                      enum nl80211_radar_event event,
19503                      struct net_device *netdev, gfp_t gfp)
19504 {
19505         struct sk_buff *msg;
19506         void *hdr;
19507
19508         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19509         if (!msg)
19510                 return;
19511
19512         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19513         if (!hdr) {
19514                 nlmsg_free(msg);
19515                 return;
19516         }
19517
19518         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19519                 goto nla_put_failure;
19520
19521         /* NOP and radar events don't need a netdev parameter */
19522         if (netdev) {
19523                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19524
19525                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19526                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19527                                       NL80211_ATTR_PAD))
19528                         goto nla_put_failure;
19529         }
19530
19531         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19532                 goto nla_put_failure;
19533
19534         if (nl80211_send_chandef(msg, chandef))
19535                 goto nla_put_failure;
19536
19537         genlmsg_end(msg, hdr);
19538
19539         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19540                                 NL80211_MCGRP_MLME, gfp);
19541         return;
19542
19543  nla_put_failure:
19544         nlmsg_free(msg);
19545 }
19546
19547 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19548                                        struct sta_opmode_info *sta_opmode,
19549                                        gfp_t gfp)
19550 {
19551         struct sk_buff *msg;
19552         struct wireless_dev *wdev = dev->ieee80211_ptr;
19553         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19554         void *hdr;
19555
19556         if (WARN_ON(!mac))
19557                 return;
19558
19559         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19560         if (!msg)
19561                 return;
19562
19563         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19564         if (!hdr) {
19565                 nlmsg_free(msg);
19566                 return;
19567         }
19568
19569         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19570                 goto nla_put_failure;
19571
19572         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19573                 goto nla_put_failure;
19574
19575         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19576                 goto nla_put_failure;
19577
19578         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19579             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19580                 goto nla_put_failure;
19581
19582         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19583             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19584                 goto nla_put_failure;
19585
19586         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19587             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19588                 goto nla_put_failure;
19589
19590         genlmsg_end(msg, hdr);
19591
19592         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19593                                 NL80211_MCGRP_MLME, gfp);
19594
19595         return;
19596
19597 nla_put_failure:
19598         nlmsg_free(msg);
19599 }
19600 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19601
19602 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19603                            u64 cookie, bool acked, s32 ack_signal,
19604                            bool is_valid_ack_signal, gfp_t gfp)
19605 {
19606         struct wireless_dev *wdev = dev->ieee80211_ptr;
19607         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19608         struct sk_buff *msg;
19609         void *hdr;
19610
19611         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19612
19613         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19614
19615         if (!msg)
19616                 return;
19617
19618         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19619         if (!hdr) {
19620                 nlmsg_free(msg);
19621                 return;
19622         }
19623
19624         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19625             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19626             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19627             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19628                               NL80211_ATTR_PAD) ||
19629             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19630             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19631                                                 ack_signal)))
19632                 goto nla_put_failure;
19633
19634         genlmsg_end(msg, hdr);
19635
19636         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19637                                 NL80211_MCGRP_MLME, gfp);
19638         return;
19639
19640  nla_put_failure:
19641         nlmsg_free(msg);
19642 }
19643 EXPORT_SYMBOL(cfg80211_probe_status);
19644
19645 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19646                                      size_t len, int freq, int sig_dbm)
19647 {
19648         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19649         struct sk_buff *msg;
19650         void *hdr;
19651         struct cfg80211_beacon_registration *reg;
19652
19653         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19654
19655         spin_lock_bh(&rdev->beacon_registrations_lock);
19656         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19657                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19658                 if (!msg) {
19659                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19660                         return;
19661                 }
19662
19663                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19664                 if (!hdr)
19665                         goto nla_put_failure;
19666
19667                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19668                     (freq &&
19669                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19670                                   KHZ_TO_MHZ(freq)) ||
19671                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19672                                   freq % 1000))) ||
19673                     (sig_dbm &&
19674                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19675                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19676                         goto nla_put_failure;
19677
19678                 genlmsg_end(msg, hdr);
19679
19680                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19681         }
19682         spin_unlock_bh(&rdev->beacon_registrations_lock);
19683         return;
19684
19685  nla_put_failure:
19686         spin_unlock_bh(&rdev->beacon_registrations_lock);
19687         nlmsg_free(msg);
19688 }
19689 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19690
19691 #ifdef CONFIG_PM
19692 static int cfg80211_net_detect_results(struct sk_buff *msg,
19693                                        struct cfg80211_wowlan_wakeup *wakeup)
19694 {
19695         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19696         struct nlattr *nl_results, *nl_match, *nl_freqs;
19697         int i, j;
19698
19699         nl_results = nla_nest_start_noflag(msg,
19700                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19701         if (!nl_results)
19702                 return -EMSGSIZE;
19703
19704         for (i = 0; i < nd->n_matches; i++) {
19705                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19706
19707                 nl_match = nla_nest_start_noflag(msg, i);
19708                 if (!nl_match)
19709                         break;
19710
19711                 /* The SSID attribute is optional in nl80211, but for
19712                  * simplicity reasons it's always present in the
19713                  * cfg80211 structure.  If a driver can't pass the
19714                  * SSID, that needs to be changed.  A zero length SSID
19715                  * is still a valid SSID (wildcard), so it cannot be
19716                  * used for this purpose.
19717                  */
19718                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19719                             match->ssid.ssid)) {
19720                         nla_nest_cancel(msg, nl_match);
19721                         goto out;
19722                 }
19723
19724                 if (match->n_channels) {
19725                         nl_freqs = nla_nest_start_noflag(msg,
19726                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19727                         if (!nl_freqs) {
19728                                 nla_nest_cancel(msg, nl_match);
19729                                 goto out;
19730                         }
19731
19732                         for (j = 0; j < match->n_channels; j++) {
19733                                 if (nla_put_u32(msg, j, match->channels[j])) {
19734                                         nla_nest_cancel(msg, nl_freqs);
19735                                         nla_nest_cancel(msg, nl_match);
19736                                         goto out;
19737                                 }
19738                         }
19739
19740                         nla_nest_end(msg, nl_freqs);
19741                 }
19742
19743                 nla_nest_end(msg, nl_match);
19744         }
19745
19746 out:
19747         nla_nest_end(msg, nl_results);
19748         return 0;
19749 }
19750
19751 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19752                                    struct cfg80211_wowlan_wakeup *wakeup,
19753                                    gfp_t gfp)
19754 {
19755         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19756         struct sk_buff *msg;
19757         void *hdr;
19758         int size = 200;
19759
19760         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19761
19762         if (wakeup)
19763                 size += wakeup->packet_present_len;
19764
19765         msg = nlmsg_new(size, gfp);
19766         if (!msg)
19767                 return;
19768
19769         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19770         if (!hdr)
19771                 goto free_msg;
19772
19773         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19774             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19775                               NL80211_ATTR_PAD))
19776                 goto free_msg;
19777
19778         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19779                                         wdev->netdev->ifindex))
19780                 goto free_msg;
19781
19782         if (wakeup) {
19783                 struct nlattr *reasons;
19784
19785                 reasons = nla_nest_start_noflag(msg,
19786                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19787                 if (!reasons)
19788                         goto free_msg;
19789
19790                 if (wakeup->disconnect &&
19791                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19792                         goto free_msg;
19793                 if (wakeup->magic_pkt &&
19794                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19795                         goto free_msg;
19796                 if (wakeup->gtk_rekey_failure &&
19797                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19798                         goto free_msg;
19799                 if (wakeup->eap_identity_req &&
19800                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19801                         goto free_msg;
19802                 if (wakeup->four_way_handshake &&
19803                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19804                         goto free_msg;
19805                 if (wakeup->rfkill_release &&
19806                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19807                         goto free_msg;
19808
19809                 if (wakeup->pattern_idx >= 0 &&
19810                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19811                                 wakeup->pattern_idx))
19812                         goto free_msg;
19813
19814                 if (wakeup->tcp_match &&
19815                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19816                         goto free_msg;
19817
19818                 if (wakeup->tcp_connlost &&
19819                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19820                         goto free_msg;
19821
19822                 if (wakeup->tcp_nomoretokens &&
19823                     nla_put_flag(msg,
19824                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19825                         goto free_msg;
19826
19827                 if (wakeup->unprot_deauth_disassoc &&
19828                     nla_put_flag(msg,
19829                                  NL80211_WOWLAN_TRIG_UNPROTECTED_DEAUTH_DISASSOC))
19830                         goto free_msg;
19831
19832                 if (wakeup->packet) {
19833                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19834                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19835
19836                         if (!wakeup->packet_80211) {
19837                                 pkt_attr =
19838                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19839                                 len_attr =
19840                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19841                         }
19842
19843                         if (wakeup->packet_len &&
19844                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19845                                 goto free_msg;
19846
19847                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19848                                     wakeup->packet))
19849                                 goto free_msg;
19850                 }
19851
19852                 if (wakeup->net_detect &&
19853                     cfg80211_net_detect_results(msg, wakeup))
19854                                 goto free_msg;
19855
19856                 nla_nest_end(msg, reasons);
19857         }
19858
19859         genlmsg_end(msg, hdr);
19860
19861         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19862                                 NL80211_MCGRP_MLME, gfp);
19863         return;
19864
19865  free_msg:
19866         nlmsg_free(msg);
19867 }
19868 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19869 #endif
19870
19871 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19872                                 enum nl80211_tdls_operation oper,
19873                                 u16 reason_code, gfp_t gfp)
19874 {
19875         struct wireless_dev *wdev = dev->ieee80211_ptr;
19876         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19877         struct sk_buff *msg;
19878         void *hdr;
19879
19880         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19881                                          reason_code);
19882
19883         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19884         if (!msg)
19885                 return;
19886
19887         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19888         if (!hdr) {
19889                 nlmsg_free(msg);
19890                 return;
19891         }
19892
19893         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19894             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19895             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19896             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19897             (reason_code > 0 &&
19898              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19899                 goto nla_put_failure;
19900
19901         genlmsg_end(msg, hdr);
19902
19903         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19904                                 NL80211_MCGRP_MLME, gfp);
19905         return;
19906
19907  nla_put_failure:
19908         nlmsg_free(msg);
19909 }
19910 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19911
19912 static int nl80211_netlink_notify(struct notifier_block * nb,
19913                                   unsigned long state,
19914                                   void *_notify)
19915 {
19916         struct netlink_notify *notify = _notify;
19917         struct cfg80211_registered_device *rdev;
19918         struct wireless_dev *wdev;
19919         struct cfg80211_beacon_registration *reg, *tmp;
19920
19921         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19922                 return NOTIFY_DONE;
19923
19924         rcu_read_lock();
19925
19926         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19927                 struct cfg80211_sched_scan_request *sched_scan_req;
19928
19929                 list_for_each_entry_rcu(sched_scan_req,
19930                                         &rdev->sched_scan_req_list,
19931                                         list) {
19932                         if (sched_scan_req->owner_nlportid == notify->portid) {
19933                                 sched_scan_req->nl_owner_dead = true;
19934                                 wiphy_work_queue(&rdev->wiphy,
19935                                                  &rdev->sched_scan_stop_wk);
19936                         }
19937                 }
19938
19939                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19940                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19941
19942                         if (wdev->owner_nlportid == notify->portid) {
19943                                 wdev->nl_owner_dead = true;
19944                                 schedule_work(&rdev->destroy_work);
19945                         } else if (wdev->conn_owner_nlportid == notify->portid) {
19946                                 schedule_work(&wdev->disconnect_wk);
19947                         }
19948
19949                         cfg80211_release_pmsr(wdev, notify->portid);
19950                 }
19951
19952                 spin_lock_bh(&rdev->beacon_registrations_lock);
19953                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
19954                                          list) {
19955                         if (reg->nlportid == notify->portid) {
19956                                 list_del(&reg->list);
19957                                 kfree(reg);
19958                                 break;
19959                         }
19960                 }
19961                 spin_unlock_bh(&rdev->beacon_registrations_lock);
19962         }
19963
19964         rcu_read_unlock();
19965
19966         /*
19967          * It is possible that the user space process that is controlling the
19968          * indoor setting disappeared, so notify the regulatory core.
19969          */
19970         regulatory_netlink_notify(notify->portid);
19971         return NOTIFY_OK;
19972 }
19973
19974 static struct notifier_block nl80211_netlink_notifier = {
19975         .notifier_call = nl80211_netlink_notify,
19976 };
19977
19978 void cfg80211_ft_event(struct net_device *netdev,
19979                        struct cfg80211_ft_event_params *ft_event)
19980 {
19981         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19982         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19983         struct sk_buff *msg;
19984         void *hdr;
19985
19986         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
19987
19988         if (!ft_event->target_ap)
19989                 return;
19990
19991         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
19992                         GFP_KERNEL);
19993         if (!msg)
19994                 return;
19995
19996         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
19997         if (!hdr)
19998                 goto out;
19999
20000         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20001             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20002             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
20003                 goto out;
20004
20005         if (ft_event->ies &&
20006             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
20007                 goto out;
20008         if (ft_event->ric_ies &&
20009             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
20010                     ft_event->ric_ies))
20011                 goto out;
20012
20013         genlmsg_end(msg, hdr);
20014
20015         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20016                                 NL80211_MCGRP_MLME, GFP_KERNEL);
20017         return;
20018  out:
20019         nlmsg_free(msg);
20020 }
20021 EXPORT_SYMBOL(cfg80211_ft_event);
20022
20023 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
20024 {
20025         struct cfg80211_registered_device *rdev;
20026         struct sk_buff *msg;
20027         void *hdr;
20028         u32 nlportid;
20029
20030         rdev = wiphy_to_rdev(wdev->wiphy);
20031         if (!rdev->crit_proto_nlportid)
20032                 return;
20033
20034         nlportid = rdev->crit_proto_nlportid;
20035         rdev->crit_proto_nlportid = 0;
20036
20037         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20038         if (!msg)
20039                 return;
20040
20041         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
20042         if (!hdr)
20043                 goto nla_put_failure;
20044
20045         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20046             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20047                               NL80211_ATTR_PAD))
20048                 goto nla_put_failure;
20049
20050         genlmsg_end(msg, hdr);
20051
20052         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
20053         return;
20054
20055  nla_put_failure:
20056         nlmsg_free(msg);
20057 }
20058 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
20059
20060 void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id)
20061 {
20062         struct wiphy *wiphy = wdev->wiphy;
20063         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20064         struct sk_buff *msg;
20065         void *hdr;
20066
20067         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
20068         if (!msg)
20069                 return;
20070
20071         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
20072         if (!hdr)
20073                 goto out;
20074
20075         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20076             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
20077             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20078                               NL80211_ATTR_PAD) ||
20079             (wdev->valid_links &&
20080              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
20081                 goto out;
20082
20083         genlmsg_end(msg, hdr);
20084
20085         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
20086                                 NL80211_MCGRP_MLME, GFP_KERNEL);
20087         return;
20088  out:
20089         nlmsg_free(msg);
20090 }
20091
20092 int cfg80211_external_auth_request(struct net_device *dev,
20093                                    struct cfg80211_external_auth_params *params,
20094                                    gfp_t gfp)
20095 {
20096         struct wireless_dev *wdev = dev->ieee80211_ptr;
20097         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
20098         struct sk_buff *msg;
20099         void *hdr;
20100
20101         if (!wdev->conn_owner_nlportid)
20102                 return -EINVAL;
20103
20104         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20105         if (!msg)
20106                 return -ENOMEM;
20107
20108         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
20109         if (!hdr)
20110                 goto nla_put_failure;
20111
20112         /* Some historical mistakes in drivers <-> userspace interface (notably
20113          * between drivers and wpa_supplicant) led to a big-endian conversion
20114          * being needed on NL80211_ATTR_AKM_SUITES _only_ when its value is
20115          * WLAN_AKM_SUITE_SAE. This is now fixed on userspace side, but for the
20116          * benefit of older wpa_supplicant versions, send this particular value
20117          * in big-endian. Note that newer wpa_supplicant will also detect this
20118          * particular value in big endian still, so it all continues to work.
20119          */
20120         if (params->key_mgmt_suite == WLAN_AKM_SUITE_SAE) {
20121                 if (nla_put_be32(msg, NL80211_ATTR_AKM_SUITES,
20122                                  cpu_to_be32(WLAN_AKM_SUITE_SAE)))
20123                         goto nla_put_failure;
20124         } else {
20125                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES,
20126                                 params->key_mgmt_suite))
20127                         goto nla_put_failure;
20128         }
20129
20130         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20131             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
20132             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
20133                         params->action) ||
20134             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
20135             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
20136                     params->ssid.ssid) ||
20137             (!is_zero_ether_addr(params->mld_addr) &&
20138              nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr)))
20139                 goto nla_put_failure;
20140
20141         genlmsg_end(msg, hdr);
20142         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
20143                         wdev->conn_owner_nlportid);
20144         return 0;
20145
20146  nla_put_failure:
20147         nlmsg_free(msg);
20148         return -ENOBUFS;
20149 }
20150 EXPORT_SYMBOL(cfg80211_external_auth_request);
20151
20152 void cfg80211_update_owe_info_event(struct net_device *netdev,
20153                                     struct cfg80211_update_owe_info *owe_info,
20154                                     gfp_t gfp)
20155 {
20156         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20157         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20158         struct sk_buff *msg;
20159         void *hdr;
20160
20161         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
20162
20163         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20164         if (!msg)
20165                 return;
20166
20167         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
20168         if (!hdr)
20169                 goto nla_put_failure;
20170
20171         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20172             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20173             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
20174                 goto nla_put_failure;
20175
20176         if (!owe_info->ie_len ||
20177             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
20178                 goto nla_put_failure;
20179
20180         if (owe_info->assoc_link_id != -1) {
20181                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
20182                                owe_info->assoc_link_id))
20183                         goto nla_put_failure;
20184
20185                 if (!is_zero_ether_addr(owe_info->peer_mld_addr) &&
20186                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
20187                             owe_info->peer_mld_addr))
20188                         goto nla_put_failure;
20189         }
20190
20191         genlmsg_end(msg, hdr);
20192
20193         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20194                                 NL80211_MCGRP_MLME, gfp);
20195         return;
20196
20197 nla_put_failure:
20198         genlmsg_cancel(msg, hdr);
20199         nlmsg_free(msg);
20200 }
20201 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
20202
20203 void cfg80211_schedule_channels_check(struct wireless_dev *wdev)
20204 {
20205         struct wiphy *wiphy = wdev->wiphy;
20206
20207         /* Schedule channels check if NO_IR or DFS relaxations are supported */
20208         if (wdev->iftype == NL80211_IFTYPE_STATION &&
20209             (wiphy_ext_feature_isset(wiphy,
20210                                      NL80211_EXT_FEATURE_DFS_CONCURRENT) ||
20211             (IS_ENABLED(CONFIG_CFG80211_REG_RELAX_NO_IR) &&
20212              wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR)))
20213                 reg_check_channels();
20214 }
20215 EXPORT_SYMBOL(cfg80211_schedule_channels_check);
20216
20217 /* initialisation/exit functions */
20218
20219 int __init nl80211_init(void)
20220 {
20221         int err;
20222
20223         err = genl_register_family(&nl80211_fam);
20224         if (err)
20225                 return err;
20226
20227         err = netlink_register_notifier(&nl80211_netlink_notifier);
20228         if (err)
20229                 goto err_out;
20230
20231         return 0;
20232  err_out:
20233         genl_unregister_family(&nl80211_fam);
20234         return err;
20235 }
20236
20237 void nl80211_exit(void)
20238 {
20239         netlink_unregister_notifier(&nl80211_netlink_notifier);
20240         genl_unregister_family(&nl80211_fam);
20241 }