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) 2018-2022 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         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
 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 };
 327
 328 static const struct nla_policy
 329 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 330         [NL80211_PMSR_TYPE_FTM] =
 331                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 332 };
 333
 334 static const struct nla_policy
 335 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 336         [NL80211_PMSR_REQ_ATTR_DATA] =
 337                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 338         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 343         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 344         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 345         [NL80211_PMSR_PEER_ATTR_REQ] =
 346                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 347         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 348 };
 349
 350 static const struct nla_policy
 351 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 352         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 353         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 354         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 355         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 356         [NL80211_PMSR_ATTR_PEERS] =
 357                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 358 };
 359
 360 static const struct nla_policy
 361 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 362         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 363                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 364         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 365                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 366         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 367                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 368         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 369                 NLA_POLICY_EXACT_LEN(8),
 370         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 371                 NLA_POLICY_EXACT_LEN(8),
 372         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 373 };
 374
 375 static const struct nla_policy
 376 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 377         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 378         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 379         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 380 };
 381
 382 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 383         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 384                                     .len = NL80211_MAX_SUPP_RATES },
 385         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 386                                 .len = NL80211_MAX_SUPP_HT_RATES },
 387         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 388         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 389         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 390         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 391                                                    NL80211_RATE_INFO_HE_GI_0_8,
 392                                                    NL80211_RATE_INFO_HE_GI_3_2),
 393         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 394                                                    NL80211_RATE_INFO_HE_1XLTF,
 395                                                    NL80211_RATE_INFO_HE_4XLTF),
 396 };
 397
 398 static const struct nla_policy
 399 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 400         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 401         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 402         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 403         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 404         [NL80211_TID_CONFIG_ATTR_NOACK] =
 405                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 406         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 407         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 408         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 409                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 410         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 411                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 412         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 413                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 414         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 415                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 416         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 417                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 418 };
 419
 420 static const struct nla_policy
 421 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 422         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 423         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 424         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 425                         NLA_POLICY_RANGE(NLA_BINARY,
 426                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 427                                          IEEE80211_MAX_DATA_LEN),
 428 };
 429
 430 static const struct nla_policy
 431 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 432         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 433         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 434                                                        .len = IEEE80211_MAX_DATA_LEN }
 435 };
 436
 437 static const struct nla_policy
 438 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 439         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 440         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 441 };
 442
 443 static const struct nla_policy
 444 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 445         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 446         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 447 };
 448
 449 static const struct nla_policy
 450 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
 451         [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
 452         [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
 453                                                 NLA_POLICY_MIN(NLA_U8, 1),
 454         [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
 455         [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
 456         [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
 457 };
 458
 459 static const struct nla_policy
 460 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
 461         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
 462         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
 463 };
 464
 465 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 466         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 467         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 468         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 469                                       .len = 20-1 },
 470         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 471
 472         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 473         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 474         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 475                                                 NL80211_EDMG_CHANNELS_MIN,
 476                                                 NL80211_EDMG_CHANNELS_MAX),
 477         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 478                                                 NL80211_EDMG_BW_CONFIG_MIN,
 479                                                 NL80211_EDMG_BW_CONFIG_MAX),
 480
 481         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 482         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 483         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 484         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 485
 486         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 487         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 488         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 489         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 490         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 491         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 492
 493         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 494         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 495         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 496
 497         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 498         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 499
 500         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 501         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 502                                     .len = WLAN_MAX_KEY_LEN },
 503         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 504         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 505         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 506         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 507         [NL80211_ATTR_KEY_TYPE] =
 508                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 509
 510         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 511         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 512         [NL80211_ATTR_BEACON_HEAD] =
 513                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 514                                        IEEE80211_MAX_DATA_LEN),
 515         [NL80211_ATTR_BEACON_TAIL] =
 516                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 517                                        IEEE80211_MAX_DATA_LEN),
 518         [NL80211_ATTR_STA_AID] =
 519                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 520         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 521         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 522         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 523                                                .len = NL80211_MAX_SUPP_RATES },
 524         [NL80211_ATTR_STA_PLINK_ACTION] =
 525                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 526         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 527                 NLA_POLICY_RANGE(NLA_U8,
 528                                  NL80211_TX_POWER_AUTOMATIC,
 529                                  NL80211_TX_POWER_FIXED),
 530         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 531         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 532         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 533         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 534                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 535         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 536
 537         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 538         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 539         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 540
 541         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 542         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 543         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 544         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 545                                            .len = NL80211_MAX_SUPP_RATES },
 546         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 547
 548         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 549         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 550
 551         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 552
 553         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 554         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 555                                                    validate_ie_attr,
 556                                                    IEEE80211_MAX_DATA_LEN),
 557         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 558         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 559
 560         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 561                                 .len = IEEE80211_MAX_SSID_LEN },
 562         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 563         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 564         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 565         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 566         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 567                                                   NL80211_MFP_NO,
 568                                                   NL80211_MFP_OPTIONAL),
 569         [NL80211_ATTR_STA_FLAGS2] =
 570                 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
 571         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 572         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 573         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 574         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 575         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 576         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 577         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 578         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 579         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 580         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 581         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 582         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 583         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 584         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 585         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 586                                  .len = IEEE80211_MAX_DATA_LEN },
 587         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 588         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 589                                                    NL80211_PS_DISABLED,
 590                                                    NL80211_PS_ENABLED),
 591         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 592         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 593         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 594         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 595         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 596         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 597         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 598         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 599         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 600         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 601         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 602         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 603         [NL80211_ATTR_STA_PLINK_STATE] =
 604                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 605         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 606         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_MESH_PEER_AID] =
 608                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 609         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 610         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 611         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 612         [NL80211_ATTR_HIDDEN_SSID] =
 613                 NLA_POLICY_RANGE(NLA_U32,
 614                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 615                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 616         [NL80211_ATTR_IE_PROBE_RESP] =
 617                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 618                                        IEEE80211_MAX_DATA_LEN),
 619         [NL80211_ATTR_IE_ASSOC_RESP] =
 620                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 621                                        IEEE80211_MAX_DATA_LEN),
 622         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 623         [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
 624         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 625         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 626         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 627         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 628         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 629         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 630         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 631         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 632         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 633         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 634                                       .len = IEEE80211_MAX_DATA_LEN },
 635         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 636         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 637         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 638                 .len = NL80211_HT_CAPABILITY_LEN
 639         },
 640         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 641         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 642         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 643         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 644         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 645
 646         /* need to include at least Auth Transaction and Status Code */
 647         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 648
 649         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 650         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 651         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 652         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 653         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 654                 NLA_POLICY_RANGE(NLA_U32,
 655                                  NL80211_MESH_POWER_UNKNOWN + 1,
 656                                  NL80211_MESH_POWER_MAX),
 657         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 658         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 659         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 660         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 661         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 662         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 663         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 664                 .len = NL80211_VHT_CAPABILITY_LEN,
 665         },
 666         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 667         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 668                                   .len = IEEE80211_MAX_DATA_LEN },
 669         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 670         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 671                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 672         [NL80211_ATTR_PEER_AID] =
 673                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 674         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 675         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 676         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 677         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 678         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 679         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 680         /*
 681          * The value of the Length field of the Supported Operating
 682          * Classes element is between 2 and 253.
 683          */
 684         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 685                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 686         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 687         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 688         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 689         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 690         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 691         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 692                                                   IEEE80211_QOS_MAP_LEN_MIN,
 693                                                   IEEE80211_QOS_MAP_LEN_MAX),
 694         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 695         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 696         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 697         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 698         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 699         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 700         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 701         [NL80211_ATTR_USER_PRIO] =
 702                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 703         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 704         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 705         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 706         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 707         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 708         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 709         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 710         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 711         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 712         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 713         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 714                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 715         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 716                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 717         },
 718         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 719         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 720         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 721         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 722         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 723                                     .len = FILS_MAX_KEK_LEN },
 724         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 725         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 726         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 727         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 728         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 729                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 730         },
 731         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 732         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 733                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 734         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 735                                           .len = FILS_ERP_MAX_REALM_LEN },
 736         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 737         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 738                                         .len = FILS_ERP_MAX_RRK_LEN },
 739         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 740         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 741         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 742         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 743         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 744
 745         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 746         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 747         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 748         [NL80211_ATTR_HE_CAPABILITY] =
 749                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
 750                                        NL80211_HE_MAX_CAPABILITY_LEN),
 751         [NL80211_ATTR_FTM_RESPONDER] =
 752                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 753         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 754         [NL80211_ATTR_PEER_MEASUREMENTS] =
 755                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 756         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 757         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 758                                         .len = SAE_PASSWORD_MAX_LEN },
 759         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 760         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 761         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 762         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 763         [NL80211_ATTR_TID_CONFIG] =
 764                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 765         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 766         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 767         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 768         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 769         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 770         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 771         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 772                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 773         [NL80211_ATTR_FILS_DISCOVERY] =
 774                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 775         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 776                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 777         [NL80211_ATTR_S1G_CAPABILITY] =
 778                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 779         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 780                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 781         [NL80211_ATTR_SAE_PWE] =
 782                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 783                                  NL80211_SAE_PWE_BOTH),
 784         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 785         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 786         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 787         [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
 788         [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
 789         [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
 790         [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
 791         [NL80211_ATTR_MBSSID_CONFIG] =
 792                         NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
 793         [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
 794         [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
 795         [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
 796         [NL80211_ATTR_EHT_CAPABILITY] =
 797                 NLA_POLICY_RANGE(NLA_BINARY,
 798                                  NL80211_EHT_MIN_CAPABILITY_LEN,
 799                                  NL80211_EHT_MAX_CAPABILITY_LEN),
 800         [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
 801         [NL80211_ATTR_MLO_LINKS] =
 802                 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
 803         [NL80211_ATTR_MLO_LINK_ID] =
 804                 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
 805         [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
 806         [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 807         [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
 808 };
 809
 810 /* policy for the key attributes */
 811 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 812         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 813         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 814         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 815         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 816         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 817         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 818         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 819         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 820         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 821 };
 822
 823 /* policy for the key default flags */
 824 static const struct nla_policy
 825 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 826         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 827         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 828 };
 829
 830 #ifdef CONFIG_PM
 831 /* policy for WoWLAN attributes */
 832 static const struct nla_policy
 833 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 834         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 835         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 836         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 837         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 838         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 839         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 840         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 841         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 842         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 843         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 844 };
 845
 846 static const struct nla_policy
 847 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 848         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 849         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 850         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 851         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 852         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 853         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 854         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 855                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 856         },
 857         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 858                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 859         },
 860         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 861         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 862         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 863 };
 864 #endif /* CONFIG_PM */
 865
 866 /* policy for coalesce rule attributes */
 867 static const struct nla_policy
 868 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 869         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 870         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 871                 NLA_POLICY_RANGE(NLA_U32,
 872                                  NL80211_COALESCE_CONDITION_MATCH,
 873                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 874         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 875 };
 876
 877 /* policy for GTK rekey offload attributes */
 878 static const struct nla_policy
 879 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 880         [NL80211_REKEY_DATA_KEK] = {
 881                 .type = NLA_BINARY,
 882                 .len = NL80211_KEK_EXT_LEN
 883         },
 884         [NL80211_REKEY_DATA_KCK] = {
 885                 .type = NLA_BINARY,
 886                 .len = NL80211_KCK_EXT_LEN
 887         },
 888         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 889         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 890 };
 891
 892 static const struct nla_policy
 893 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 894         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 895         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 896         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 897         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 898         [NL80211_BAND_LC]    = { .type = NLA_S32 },
 899 };
 900
 901 static const struct nla_policy
 902 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 903         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 904                                                  .len = IEEE80211_MAX_SSID_LEN },
 905         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 906         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 907         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 908                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 909 };
 910
 911 static const struct nla_policy
 912 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 913         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 914         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 915 };
 916
 917 static const struct nla_policy
 918 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 919         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 920         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 921         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 922                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 923         },
 924 };
 925
 926 /* policy for NAN function attributes */
 927 static const struct nla_policy
 928 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 929         [NL80211_NAN_FUNC_TYPE] =
 930                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 931         [NL80211_NAN_FUNC_SERVICE_ID] = {
 932                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 933         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 934         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 935         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 936         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 937         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 938         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 939         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 940         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 941         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 942                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 943         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 944         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 945         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 946         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 947         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 948 };
 949
 950 /* policy for Service Response Filter attributes */
 951 static const struct nla_policy
 952 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 953         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 954         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 955                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 956         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 957         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 958 };
 959
 960 /* policy for packet pattern attributes */
 961 static const struct nla_policy
 962 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 963         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 964         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 965         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 966 };
 967
 968 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 969                                      struct cfg80211_registered_device **rdev,
 970                                      struct wireless_dev **wdev,
 971                                      struct nlattr **attrbuf)
 972 {
 973         int err;
 974
 975         if (!cb->args[0]) {
 976                 struct nlattr **attrbuf_free = NULL;
 977
 978                 if (!attrbuf) {
 979                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 980                                           GFP_KERNEL);
 981                         if (!attrbuf)
 982                                 return -ENOMEM;
 983                         attrbuf_free = attrbuf;
 984                 }
 985
 986                 err = nlmsg_parse_deprecated(cb->nlh,
 987                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 988                                              attrbuf, nl80211_fam.maxattr,
 989                                              nl80211_policy, NULL);
 990                 if (err) {
 991                         kfree(attrbuf_free);
 992                         return err;
 993                 }
 994
 995                 rtnl_lock();
 996                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
 997                                                    attrbuf);
 998                 kfree(attrbuf_free);
 999                 if (IS_ERR(*wdev)) {
1000                         rtnl_unlock();
1001                         return PTR_ERR(*wdev);
1002                 }
1003                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1004                 mutex_lock(&(*rdev)->wiphy.mtx);
1005                 rtnl_unlock();
1006                 /* 0 is the first index - add 1 to parse only once */
1007                 cb->args[0] = (*rdev)->wiphy_idx + 1;
1008                 cb->args[1] = (*wdev)->identifier;
1009         } else {
1010                 /* subtract the 1 again here */
1011                 struct wiphy *wiphy;
1012                 struct wireless_dev *tmp;
1013
1014                 rtnl_lock();
1015                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1016                 if (!wiphy) {
1017                         rtnl_unlock();
1018                         return -ENODEV;
1019                 }
1020                 *rdev = wiphy_to_rdev(wiphy);
1021                 *wdev = NULL;
1022
1023                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1024                         if (tmp->identifier == cb->args[1]) {
1025                                 *wdev = tmp;
1026                                 break;
1027                         }
1028                 }
1029
1030                 if (!*wdev) {
1031                         rtnl_unlock();
1032                         return -ENODEV;
1033                 }
1034                 mutex_lock(&(*rdev)->wiphy.mtx);
1035                 rtnl_unlock();
1036         }
1037
1038         return 0;
1039 }
1040
1041 /* message building helper */
1042 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1043                      int flags, u8 cmd)
1044 {
1045         /* since there is no private header just add the generic one */
1046         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1047 }
1048
1049 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1050                                      const struct ieee80211_reg_rule *rule)
1051 {
1052         int j;
1053         struct nlattr *nl_wmm_rules =
1054                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1055
1056         if (!nl_wmm_rules)
1057                 goto nla_put_failure;
1058
1059         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1060                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1061
1062                 if (!nl_wmm_rule)
1063                         goto nla_put_failure;
1064
1065                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1066                                 rule->wmm_rule.client[j].cw_min) ||
1067                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1068                                 rule->wmm_rule.client[j].cw_max) ||
1069                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1070                                rule->wmm_rule.client[j].aifsn) ||
1071                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1072                                 rule->wmm_rule.client[j].cot))
1073                         goto nla_put_failure;
1074
1075                 nla_nest_end(msg, nl_wmm_rule);
1076         }
1077         nla_nest_end(msg, nl_wmm_rules);
1078
1079         return 0;
1080
1081 nla_put_failure:
1082         return -ENOBUFS;
1083 }
1084
1085 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1086                                    struct ieee80211_channel *chan,
1087                                    bool large)
1088 {
1089         /* Some channels must be completely excluded from the
1090          * list to protect old user-space tools from breaking
1091          */
1092         if (!large && chan->flags &
1093             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1094                 return 0;
1095         if (!large && chan->freq_offset)
1096                 return 0;
1097
1098         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1099                         chan->center_freq))
1100                 goto nla_put_failure;
1101
1102         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1103                 goto nla_put_failure;
1104
1105         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1106             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1107                 goto nla_put_failure;
1108         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1109                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1110                         goto nla_put_failure;
1111                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1112                         goto nla_put_failure;
1113         }
1114         if (chan->flags & IEEE80211_CHAN_RADAR) {
1115                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1116                         goto nla_put_failure;
1117                 if (large) {
1118                         u32 time;
1119
1120                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1121
1122                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1123                                         chan->dfs_state))
1124                                 goto nla_put_failure;
1125                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1126                                         time))
1127                                 goto nla_put_failure;
1128                         if (nla_put_u32(msg,
1129                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1130                                         chan->dfs_cac_ms))
1131                                 goto nla_put_failure;
1132                 }
1133         }
1134
1135         if (large) {
1136                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1137                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1138                         goto nla_put_failure;
1139                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1140                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1141                         goto nla_put_failure;
1142                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1143                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1144                         goto nla_put_failure;
1145                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1146                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1147                         goto nla_put_failure;
1148                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1149                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1150                         goto nla_put_failure;
1151                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1152                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1153                         goto nla_put_failure;
1154                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1155                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1156                         goto nla_put_failure;
1157                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1158                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1159                         goto nla_put_failure;
1160                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1161                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1162                         goto nla_put_failure;
1163                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1164                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1165                         goto nla_put_failure;
1166                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1167                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1168                         goto nla_put_failure;
1169                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1170                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1171                         goto nla_put_failure;
1172                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1173                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1174                         goto nla_put_failure;
1175                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1176                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1177                         goto nla_put_failure;
1178                 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1179                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1180                         goto nla_put_failure;
1181                 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1182                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1183                         goto nla_put_failure;
1184         }
1185
1186         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1187                         DBM_TO_MBM(chan->max_power)))
1188                 goto nla_put_failure;
1189
1190         if (large) {
1191                 const struct ieee80211_reg_rule *rule =
1192                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1193
1194                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1195                         if (nl80211_msg_put_wmm_rules(msg, rule))
1196                                 goto nla_put_failure;
1197                 }
1198         }
1199
1200         return 0;
1201
1202  nla_put_failure:
1203         return -ENOBUFS;
1204 }
1205
1206 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1207                                   struct cfg80211_txq_stats *txqstats,
1208                                   int attrtype)
1209 {
1210         struct nlattr *txqattr;
1211
1212 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1213         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1214             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1215                 return false;                                             \
1216         } while (0)
1217
1218         txqattr = nla_nest_start_noflag(msg, attrtype);
1219         if (!txqattr)
1220                 return false;
1221
1222         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1223         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1224         PUT_TXQVAL_U32(FLOWS, flows);
1225         PUT_TXQVAL_U32(DROPS, drops);
1226         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1227         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1228         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1229         PUT_TXQVAL_U32(COLLISIONS, collisions);
1230         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1231         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1232         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1233         nla_nest_end(msg, txqattr);
1234
1235 #undef PUT_TXQVAL_U32
1236         return true;
1237 }
1238
1239 /* netlink command implementations */
1240
1241 /**
1242  * nl80211_link_id - return link ID
1243  * @attrs: attributes to look at
1244  *
1245  * Returns: the link ID or 0 if not given
1246  *
1247  * Note this function doesn't do any validation of the link
1248  * ID validity wrt. links that were actually added, so it must
1249  * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1250  * or if additional validation is done.
1251  */
1252 static unsigned int nl80211_link_id(struct nlattr **attrs)
1253 {
1254         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1255
1256         if (!linkid)
1257                 return 0;
1258
1259         return nla_get_u8(linkid);
1260 }
1261
1262 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1263 {
1264         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1265
1266         if (!linkid)
1267                 return -1;
1268
1269         return nla_get_u8(linkid);
1270 }
1271
1272 struct key_parse {
1273         struct key_params p;
1274         int idx;
1275         int type;
1276         bool def, defmgmt, defbeacon;
1277         bool def_uni, def_multi;
1278 };
1279
1280 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1281                                  struct key_parse *k)
1282 {
1283         struct nlattr *tb[NL80211_KEY_MAX + 1];
1284         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1285                                               nl80211_key_policy,
1286                                               info->extack);
1287         if (err)
1288                 return err;
1289
1290         k->def = !!tb[NL80211_KEY_DEFAULT];
1291         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1292         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1293
1294         if (k->def) {
1295                 k->def_uni = true;
1296                 k->def_multi = true;
1297         }
1298         if (k->defmgmt || k->defbeacon)
1299                 k->def_multi = true;
1300
1301         if (tb[NL80211_KEY_IDX])
1302                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1303
1304         if (tb[NL80211_KEY_DATA]) {
1305                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1306                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1307         }
1308
1309         if (tb[NL80211_KEY_SEQ]) {
1310                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1311                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1312         }
1313
1314         if (tb[NL80211_KEY_CIPHER])
1315                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1316
1317         if (tb[NL80211_KEY_TYPE])
1318                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1319
1320         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1321                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1322
1323                 err = nla_parse_nested_deprecated(kdt,
1324                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1325                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1326                                                   nl80211_key_default_policy,
1327                                                   info->extack);
1328                 if (err)
1329                         return err;
1330
1331                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1332                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1333         }
1334
1335         if (tb[NL80211_KEY_MODE])
1336                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1337
1338         return 0;
1339 }
1340
1341 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1342 {
1343         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1344                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1345                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1346         }
1347
1348         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1349                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1350                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1351         }
1352
1353         if (info->attrs[NL80211_ATTR_KEY_IDX])
1354                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1355
1356         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1357                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1358
1359         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1360         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1361
1362         if (k->def) {
1363                 k->def_uni = true;
1364                 k->def_multi = true;
1365         }
1366         if (k->defmgmt)
1367                 k->def_multi = true;
1368
1369         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1370                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1371
1372         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1373                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1374                 int err = nla_parse_nested_deprecated(kdt,
1375                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1376                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1377                                                       nl80211_key_default_policy,
1378                                                       info->extack);
1379                 if (err)
1380                         return err;
1381
1382                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1383                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1384         }
1385
1386         return 0;
1387 }
1388
1389 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1390 {
1391         int err;
1392
1393         memset(k, 0, sizeof(*k));
1394         k->idx = -1;
1395         k->type = -1;
1396
1397         if (info->attrs[NL80211_ATTR_KEY])
1398                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1399         else
1400                 err = nl80211_parse_key_old(info, k);
1401
1402         if (err)
1403                 return err;
1404
1405         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1406             (k->defbeacon ? 1 : 0) > 1) {
1407                 GENL_SET_ERR_MSG(info,
1408                                  "key with multiple default flags is invalid");
1409                 return -EINVAL;
1410         }
1411
1412         if (k->defmgmt || k->defbeacon) {
1413                 if (k->def_uni || !k->def_multi) {
1414                         GENL_SET_ERR_MSG(info,
1415                                          "defmgmt/defbeacon key must be mcast");
1416                         return -EINVAL;
1417                 }
1418         }
1419
1420         if (k->idx != -1) {
1421                 if (k->defmgmt) {
1422                         if (k->idx < 4 || k->idx > 5) {
1423                                 GENL_SET_ERR_MSG(info,
1424                                                  "defmgmt key idx not 4 or 5");
1425                                 return -EINVAL;
1426                         }
1427                 } else if (k->defbeacon) {
1428                         if (k->idx < 6 || k->idx > 7) {
1429                                 GENL_SET_ERR_MSG(info,
1430                                                  "defbeacon key idx not 6 or 7");
1431                                 return -EINVAL;
1432                         }
1433                 } else if (k->def) {
1434                         if (k->idx < 0 || k->idx > 3) {
1435                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1436                                 return -EINVAL;
1437                         }
1438                 } else {
1439                         if (k->idx < 0 || k->idx > 7) {
1440                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1441                                 return -EINVAL;
1442                         }
1443                 }
1444         }
1445
1446         return 0;
1447 }
1448
1449 static struct cfg80211_cached_keys *
1450 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1451                        struct genl_info *info, bool *no_ht)
1452 {
1453         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1454         struct key_parse parse;
1455         struct nlattr *key;
1456         struct cfg80211_cached_keys *result;
1457         int rem, err, def = 0;
1458         bool have_key = false;
1459
1460         nla_for_each_nested(key, keys, rem) {
1461                 have_key = true;
1462                 break;
1463         }
1464
1465         if (!have_key)
1466                 return NULL;
1467
1468         result = kzalloc(sizeof(*result), GFP_KERNEL);
1469         if (!result)
1470                 return ERR_PTR(-ENOMEM);
1471
1472         result->def = -1;
1473
1474         nla_for_each_nested(key, keys, rem) {
1475                 memset(&parse, 0, sizeof(parse));
1476                 parse.idx = -1;
1477
1478                 err = nl80211_parse_key_new(info, key, &parse);
1479                 if (err)
1480                         goto error;
1481                 err = -EINVAL;
1482                 if (!parse.p.key)
1483                         goto error;
1484                 if (parse.idx < 0 || parse.idx > 3) {
1485                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1486                         goto error;
1487                 }
1488                 if (parse.def) {
1489                         if (def) {
1490                                 GENL_SET_ERR_MSG(info,
1491                                                  "only one key can be default");
1492                                 goto error;
1493                         }
1494                         def = 1;
1495                         result->def = parse.idx;
1496                         if (!parse.def_uni || !parse.def_multi)
1497                                 goto error;
1498                 } else if (parse.defmgmt)
1499                         goto error;
1500                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1501                                                      parse.idx, false, NULL);
1502                 if (err)
1503                         goto error;
1504                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1505                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1506                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1507                         err = -EINVAL;
1508                         goto error;
1509                 }
1510                 result->params[parse.idx].cipher = parse.p.cipher;
1511                 result->params[parse.idx].key_len = parse.p.key_len;
1512                 result->params[parse.idx].key = result->data[parse.idx];
1513                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1514
1515                 /* must be WEP key if we got here */
1516                 if (no_ht)
1517                         *no_ht = true;
1518         }
1519
1520         if (result->def < 0) {
1521                 err = -EINVAL;
1522                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1523                 goto error;
1524         }
1525
1526         return result;
1527  error:
1528         kfree(result);
1529         return ERR_PTR(err);
1530 }
1531
1532 static int nl80211_key_allowed(struct wireless_dev *wdev)
1533 {
1534         ASSERT_WDEV_LOCK(wdev);
1535
1536         switch (wdev->iftype) {
1537         case NL80211_IFTYPE_AP:
1538         case NL80211_IFTYPE_AP_VLAN:
1539         case NL80211_IFTYPE_P2P_GO:
1540         case NL80211_IFTYPE_MESH_POINT:
1541                 break;
1542         case NL80211_IFTYPE_ADHOC:
1543                 if (wdev->u.ibss.current_bss)
1544                         return 0;
1545                 return -ENOLINK;
1546         case NL80211_IFTYPE_STATION:
1547         case NL80211_IFTYPE_P2P_CLIENT:
1548                 /* for MLO, require driver validation of the link ID */
1549                 if (wdev->connected)
1550                         return 0;
1551                 return -ENOLINK;
1552         case NL80211_IFTYPE_UNSPECIFIED:
1553         case NL80211_IFTYPE_OCB:
1554         case NL80211_IFTYPE_MONITOR:
1555         case NL80211_IFTYPE_NAN:
1556         case NL80211_IFTYPE_P2P_DEVICE:
1557         case NL80211_IFTYPE_WDS:
1558         case NUM_NL80211_IFTYPES:
1559                 return -EINVAL;
1560         }
1561
1562         return 0;
1563 }
1564
1565 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1566                                                         u32 freq)
1567 {
1568         struct ieee80211_channel *chan;
1569
1570         chan = ieee80211_get_channel_khz(wiphy, freq);
1571         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1572                 return NULL;
1573         return chan;
1574 }
1575
1576 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1577 {
1578         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1579         int i;
1580
1581         if (!nl_modes)
1582                 goto nla_put_failure;
1583
1584         i = 0;
1585         while (ifmodes) {
1586                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1587                         goto nla_put_failure;
1588                 ifmodes >>= 1;
1589                 i++;
1590         }
1591
1592         nla_nest_end(msg, nl_modes);
1593         return 0;
1594
1595 nla_put_failure:
1596         return -ENOBUFS;
1597 }
1598
1599 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1600                                           struct sk_buff *msg,
1601                                           bool large)
1602 {
1603         struct nlattr *nl_combis;
1604         int i, j;
1605
1606         nl_combis = nla_nest_start_noflag(msg,
1607                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1608         if (!nl_combis)
1609                 goto nla_put_failure;
1610
1611         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1612                 const struct ieee80211_iface_combination *c;
1613                 struct nlattr *nl_combi, *nl_limits;
1614
1615                 c = &wiphy->iface_combinations[i];
1616
1617                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1618                 if (!nl_combi)
1619                         goto nla_put_failure;
1620
1621                 nl_limits = nla_nest_start_noflag(msg,
1622                                                   NL80211_IFACE_COMB_LIMITS);
1623                 if (!nl_limits)
1624                         goto nla_put_failure;
1625
1626                 for (j = 0; j < c->n_limits; j++) {
1627                         struct nlattr *nl_limit;
1628
1629                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1630                         if (!nl_limit)
1631                                 goto nla_put_failure;
1632                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1633                                         c->limits[j].max))
1634                                 goto nla_put_failure;
1635                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1636                                                 c->limits[j].types))
1637                                 goto nla_put_failure;
1638                         nla_nest_end(msg, nl_limit);
1639                 }
1640
1641                 nla_nest_end(msg, nl_limits);
1642
1643                 if (c->beacon_int_infra_match &&
1644                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1645                         goto nla_put_failure;
1646                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1647                                 c->num_different_channels) ||
1648                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1649                                 c->max_interfaces))
1650                         goto nla_put_failure;
1651                 if (large &&
1652                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1653                                 c->radar_detect_widths) ||
1654                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1655                                 c->radar_detect_regions)))
1656                         goto nla_put_failure;
1657                 if (c->beacon_int_min_gcd &&
1658                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1659                                 c->beacon_int_min_gcd))
1660                         goto nla_put_failure;
1661
1662                 nla_nest_end(msg, nl_combi);
1663         }
1664
1665         nla_nest_end(msg, nl_combis);
1666
1667         return 0;
1668 nla_put_failure:
1669         return -ENOBUFS;
1670 }
1671
1672 #ifdef CONFIG_PM
1673 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1674                                         struct sk_buff *msg)
1675 {
1676         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1677         struct nlattr *nl_tcp;
1678
1679         if (!tcp)
1680                 return 0;
1681
1682         nl_tcp = nla_nest_start_noflag(msg,
1683                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1684         if (!nl_tcp)
1685                 return -ENOBUFS;
1686
1687         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1688                         tcp->data_payload_max))
1689                 return -ENOBUFS;
1690
1691         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1692                         tcp->data_payload_max))
1693                 return -ENOBUFS;
1694
1695         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1696                 return -ENOBUFS;
1697
1698         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1699                                 sizeof(*tcp->tok), tcp->tok))
1700                 return -ENOBUFS;
1701
1702         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1703                         tcp->data_interval_max))
1704                 return -ENOBUFS;
1705
1706         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1707                         tcp->wake_payload_max))
1708                 return -ENOBUFS;
1709
1710         nla_nest_end(msg, nl_tcp);
1711         return 0;
1712 }
1713
1714 static int nl80211_send_wowlan(struct sk_buff *msg,
1715                                struct cfg80211_registered_device *rdev,
1716                                bool large)
1717 {
1718         struct nlattr *nl_wowlan;
1719
1720         if (!rdev->wiphy.wowlan)
1721                 return 0;
1722
1723         nl_wowlan = nla_nest_start_noflag(msg,
1724                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1725         if (!nl_wowlan)
1726                 return -ENOBUFS;
1727
1728         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1729              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1730             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1731              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1732             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1733              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1734             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1735              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1736             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1737              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1738             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1739              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1740             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1741              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1742             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1743              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1744                 return -ENOBUFS;
1745
1746         if (rdev->wiphy.wowlan->n_patterns) {
1747                 struct nl80211_pattern_support pat = {
1748                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1749                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1750                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1751                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1752                 };
1753
1754                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1755                             sizeof(pat), &pat))
1756                         return -ENOBUFS;
1757         }
1758
1759         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1760             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1761                         rdev->wiphy.wowlan->max_nd_match_sets))
1762                 return -ENOBUFS;
1763
1764         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1765                 return -ENOBUFS;
1766
1767         nla_nest_end(msg, nl_wowlan);
1768
1769         return 0;
1770 }
1771 #endif
1772
1773 static int nl80211_send_coalesce(struct sk_buff *msg,
1774                                  struct cfg80211_registered_device *rdev)
1775 {
1776         struct nl80211_coalesce_rule_support rule;
1777
1778         if (!rdev->wiphy.coalesce)
1779                 return 0;
1780
1781         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1782         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1783         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1784         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1785         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1786         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1787
1788         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1789                 return -ENOBUFS;
1790
1791         return 0;
1792 }
1793
1794 static int
1795 nl80211_send_iftype_data(struct sk_buff *msg,
1796                          const struct ieee80211_supported_band *sband,
1797                          const struct ieee80211_sband_iftype_data *iftdata)
1798 {
1799         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1800         const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1801
1802         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1803                                 iftdata->types_mask))
1804                 return -ENOBUFS;
1805
1806         if (he_cap->has_he) {
1807                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1808                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1809                             he_cap->he_cap_elem.mac_cap_info) ||
1810                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1811                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1812                             he_cap->he_cap_elem.phy_cap_info) ||
1813                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1814                             sizeof(he_cap->he_mcs_nss_supp),
1815                             &he_cap->he_mcs_nss_supp) ||
1816                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1817                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1818                         return -ENOBUFS;
1819         }
1820
1821         if (eht_cap->has_eht && he_cap->has_he) {
1822                 u8 mcs_nss_size, ppe_thresh_size;
1823                 u16 ppe_thres_hdr;
1824
1825                 mcs_nss_size =
1826                         ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1827                                                    &eht_cap->eht_cap_elem);
1828
1829                 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1830                 ppe_thresh_size =
1831                         ieee80211_eht_ppe_size(ppe_thres_hdr,
1832                                                eht_cap->eht_cap_elem.phy_cap_info);
1833
1834                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1835                             sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1836                             eht_cap->eht_cap_elem.mac_cap_info) ||
1837                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1838                             sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1839                             eht_cap->eht_cap_elem.phy_cap_info) ||
1840                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1841                             mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1842                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1843                             ppe_thresh_size, eht_cap->eht_ppe_thres))
1844                         return -ENOBUFS;
1845         }
1846
1847         if (sband->band == NL80211_BAND_6GHZ &&
1848             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1849                     sizeof(iftdata->he_6ghz_capa),
1850                     &iftdata->he_6ghz_capa))
1851                 return -ENOBUFS;
1852
1853         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1854             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1855                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1856                 return -ENOBUFS;
1857
1858         return 0;
1859 }
1860
1861 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1862                                       struct ieee80211_supported_band *sband,
1863                                       bool large)
1864 {
1865         struct nlattr *nl_rates, *nl_rate;
1866         struct ieee80211_rate *rate;
1867         int i;
1868
1869         /* add HT info */
1870         if (sband->ht_cap.ht_supported &&
1871             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1872                      sizeof(sband->ht_cap.mcs),
1873                      &sband->ht_cap.mcs) ||
1874              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1875                          sband->ht_cap.cap) ||
1876              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1877                         sband->ht_cap.ampdu_factor) ||
1878              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1879                         sband->ht_cap.ampdu_density)))
1880                 return -ENOBUFS;
1881
1882         /* add VHT info */
1883         if (sband->vht_cap.vht_supported &&
1884             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1885                      sizeof(sband->vht_cap.vht_mcs),
1886                      &sband->vht_cap.vht_mcs) ||
1887              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1888                          sband->vht_cap.cap)))
1889                 return -ENOBUFS;
1890
1891         if (large && sband->n_iftype_data) {
1892                 struct nlattr *nl_iftype_data =
1893                         nla_nest_start_noflag(msg,
1894                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1895                 int err;
1896
1897                 if (!nl_iftype_data)
1898                         return -ENOBUFS;
1899
1900                 for (i = 0; i < sband->n_iftype_data; i++) {
1901                         struct nlattr *iftdata;
1902
1903                         iftdata = nla_nest_start_noflag(msg, i + 1);
1904                         if (!iftdata)
1905                                 return -ENOBUFS;
1906
1907                         err = nl80211_send_iftype_data(msg, sband,
1908                                                        &sband->iftype_data[i]);
1909                         if (err)
1910                                 return err;
1911
1912                         nla_nest_end(msg, iftdata);
1913                 }
1914
1915                 nla_nest_end(msg, nl_iftype_data);
1916         }
1917
1918         /* add EDMG info */
1919         if (large && sband->edmg_cap.channels &&
1920             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1921                        sband->edmg_cap.channels) ||
1922             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1923                        sband->edmg_cap.bw_config)))
1924
1925                 return -ENOBUFS;
1926
1927         /* add bitrates */
1928         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1929         if (!nl_rates)
1930                 return -ENOBUFS;
1931
1932         for (i = 0; i < sband->n_bitrates; i++) {
1933                 nl_rate = nla_nest_start_noflag(msg, i);
1934                 if (!nl_rate)
1935                         return -ENOBUFS;
1936
1937                 rate = &sband->bitrates[i];
1938                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1939                                 rate->bitrate))
1940                         return -ENOBUFS;
1941                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1942                     nla_put_flag(msg,
1943                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1944                         return -ENOBUFS;
1945
1946                 nla_nest_end(msg, nl_rate);
1947         }
1948
1949         nla_nest_end(msg, nl_rates);
1950
1951         return 0;
1952 }
1953
1954 static int
1955 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1956                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1957 {
1958         u16 stypes;
1959         struct nlattr *nl_ftypes, *nl_ifs;
1960         enum nl80211_iftype ift;
1961         int i;
1962
1963         if (!mgmt_stypes)
1964                 return 0;
1965
1966         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1967         if (!nl_ifs)
1968                 return -ENOBUFS;
1969
1970         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1971                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1972                 if (!nl_ftypes)
1973                         return -ENOBUFS;
1974                 i = 0;
1975                 stypes = mgmt_stypes[ift].tx;
1976                 while (stypes) {
1977                         if ((stypes & 1) &&
1978                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1979                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1980                                 return -ENOBUFS;
1981                         stypes >>= 1;
1982                         i++;
1983                 }
1984                 nla_nest_end(msg, nl_ftypes);
1985         }
1986
1987         nla_nest_end(msg, nl_ifs);
1988
1989         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1990         if (!nl_ifs)
1991                 return -ENOBUFS;
1992
1993         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1994                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1995                 if (!nl_ftypes)
1996                         return -ENOBUFS;
1997                 i = 0;
1998                 stypes = mgmt_stypes[ift].rx;
1999                 while (stypes) {
2000                         if ((stypes & 1) &&
2001                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2002                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2003                                 return -ENOBUFS;
2004                         stypes >>= 1;
2005                         i++;
2006                 }
2007                 nla_nest_end(msg, nl_ftypes);
2008         }
2009         nla_nest_end(msg, nl_ifs);
2010
2011         return 0;
2012 }
2013
2014 #define CMD(op, n)                                                      \
2015          do {                                                           \
2016                 if (rdev->ops->op) {                                    \
2017                         i++;                                            \
2018                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
2019                                 goto nla_put_failure;                   \
2020                 }                                                       \
2021         } while (0)
2022
2023 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2024                                         struct sk_buff *msg)
2025 {
2026         int i = 0;
2027
2028         /*
2029          * do *NOT* add anything into this function, new things need to be
2030          * advertised only to new versions of userspace that can deal with
2031          * the split (and they can't possibly care about new features...
2032          */
2033         CMD(add_virtual_intf, NEW_INTERFACE);
2034         CMD(change_virtual_intf, SET_INTERFACE);
2035         CMD(add_key, NEW_KEY);
2036         CMD(start_ap, START_AP);
2037         CMD(add_station, NEW_STATION);
2038         CMD(add_mpath, NEW_MPATH);
2039         CMD(update_mesh_config, SET_MESH_CONFIG);
2040         CMD(change_bss, SET_BSS);
2041         CMD(auth, AUTHENTICATE);
2042         CMD(assoc, ASSOCIATE);
2043         CMD(deauth, DEAUTHENTICATE);
2044         CMD(disassoc, DISASSOCIATE);
2045         CMD(join_ibss, JOIN_IBSS);
2046         CMD(join_mesh, JOIN_MESH);
2047         CMD(set_pmksa, SET_PMKSA);
2048         CMD(del_pmksa, DEL_PMKSA);
2049         CMD(flush_pmksa, FLUSH_PMKSA);
2050         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2051                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2052         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2053         CMD(mgmt_tx, FRAME);
2054         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2055         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2056                 i++;
2057                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2058                         goto nla_put_failure;
2059         }
2060         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2061             rdev->ops->join_mesh) {
2062                 i++;
2063                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2064                         goto nla_put_failure;
2065         }
2066         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2067                 CMD(tdls_mgmt, TDLS_MGMT);
2068                 CMD(tdls_oper, TDLS_OPER);
2069         }
2070         if (rdev->wiphy.max_sched_scan_reqs)
2071                 CMD(sched_scan_start, START_SCHED_SCAN);
2072         CMD(probe_client, PROBE_CLIENT);
2073         CMD(set_noack_map, SET_NOACK_MAP);
2074         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2075                 i++;
2076                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2077                         goto nla_put_failure;
2078         }
2079         CMD(start_p2p_device, START_P2P_DEVICE);
2080         CMD(set_mcast_rate, SET_MCAST_RATE);
2081 #ifdef CONFIG_NL80211_TESTMODE
2082         CMD(testmode_cmd, TESTMODE);
2083 #endif
2084
2085         if (rdev->ops->connect || rdev->ops->auth) {
2086                 i++;
2087                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2088                         goto nla_put_failure;
2089         }
2090
2091         if (rdev->ops->disconnect || rdev->ops->deauth) {
2092                 i++;
2093                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2094                         goto nla_put_failure;
2095         }
2096
2097         return i;
2098  nla_put_failure:
2099         return -ENOBUFS;
2100 }
2101
2102 static int
2103 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2104                            struct sk_buff *msg)
2105 {
2106         struct nlattr *ftm;
2107
2108         if (!cap->ftm.supported)
2109                 return 0;
2110
2111         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2112         if (!ftm)
2113                 return -ENOBUFS;
2114
2115         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2116                 return -ENOBUFS;
2117         if (cap->ftm.non_asap &&
2118             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2119                 return -ENOBUFS;
2120         if (cap->ftm.request_lci &&
2121             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2122                 return -ENOBUFS;
2123         if (cap->ftm.request_civicloc &&
2124             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2125                 return -ENOBUFS;
2126         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2127                         cap->ftm.preambles))
2128                 return -ENOBUFS;
2129         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2130                         cap->ftm.bandwidths))
2131                 return -ENOBUFS;
2132         if (cap->ftm.max_bursts_exponent >= 0 &&
2133             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2134                         cap->ftm.max_bursts_exponent))
2135                 return -ENOBUFS;
2136         if (cap->ftm.max_ftms_per_burst &&
2137             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2138                         cap->ftm.max_ftms_per_burst))
2139                 return -ENOBUFS;
2140         if (cap->ftm.trigger_based &&
2141             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2142                 return -ENOBUFS;
2143         if (cap->ftm.non_trigger_based &&
2144             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2145                 return -ENOBUFS;
2146
2147         nla_nest_end(msg, ftm);
2148         return 0;
2149 }
2150
2151 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2152                                   struct sk_buff *msg)
2153 {
2154         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2155         struct nlattr *pmsr, *caps;
2156
2157         if (!cap)
2158                 return 0;
2159
2160         /*
2161          * we don't need to clean up anything here since the caller
2162          * will genlmsg_cancel() if we fail
2163          */
2164
2165         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2166         if (!pmsr)
2167                 return -ENOBUFS;
2168
2169         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2170                 return -ENOBUFS;
2171
2172         if (cap->report_ap_tsf &&
2173             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2174                 return -ENOBUFS;
2175
2176         if (cap->randomize_mac_addr &&
2177             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2178                 return -ENOBUFS;
2179
2180         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2181         if (!caps)
2182                 return -ENOBUFS;
2183
2184         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2185                 return -ENOBUFS;
2186
2187         nla_nest_end(msg, caps);
2188         nla_nest_end(msg, pmsr);
2189
2190         return 0;
2191 }
2192
2193 static int
2194 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2195                               struct sk_buff *msg)
2196 {
2197         int i;
2198         struct nlattr *nested, *nested_akms;
2199         const struct wiphy_iftype_akm_suites *iftype_akms;
2200
2201         if (!rdev->wiphy.num_iftype_akm_suites ||
2202             !rdev->wiphy.iftype_akm_suites)
2203                 return 0;
2204
2205         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2206         if (!nested)
2207                 return -ENOBUFS;
2208
2209         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2210                 nested_akms = nla_nest_start(msg, i + 1);
2211                 if (!nested_akms)
2212                         return -ENOBUFS;
2213
2214                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2215
2216                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2217                                         iftype_akms->iftypes_mask))
2218                         return -ENOBUFS;
2219
2220                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2221                             sizeof(u32) * iftype_akms->n_akm_suites,
2222                             iftype_akms->akm_suites)) {
2223                         return -ENOBUFS;
2224                 }
2225                 nla_nest_end(msg, nested_akms);
2226         }
2227
2228         nla_nest_end(msg, nested);
2229
2230         return 0;
2231 }
2232
2233 static int
2234 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2235                                struct sk_buff *msg)
2236 {
2237         struct nlattr *supp;
2238
2239         if (!rdev->wiphy.tid_config_support.vif &&
2240             !rdev->wiphy.tid_config_support.peer)
2241                 return 0;
2242
2243         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2244         if (!supp)
2245                 return -ENOSPC;
2246
2247         if (rdev->wiphy.tid_config_support.vif &&
2248             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2249                               rdev->wiphy.tid_config_support.vif,
2250                               NL80211_TID_CONFIG_ATTR_PAD))
2251                 goto fail;
2252
2253         if (rdev->wiphy.tid_config_support.peer &&
2254             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2255                               rdev->wiphy.tid_config_support.peer,
2256                               NL80211_TID_CONFIG_ATTR_PAD))
2257                 goto fail;
2258
2259         /* for now we just use the same value ... makes more sense */
2260         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2261                        rdev->wiphy.tid_config_support.max_retry))
2262                 goto fail;
2263         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2264                        rdev->wiphy.tid_config_support.max_retry))
2265                 goto fail;
2266
2267         nla_nest_end(msg, supp);
2268
2269         return 0;
2270 fail:
2271         nla_nest_cancel(msg, supp);
2272         return -ENOBUFS;
2273 }
2274
2275 static int
2276 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2277                       struct sk_buff *msg)
2278 {
2279         struct nlattr *sar_capa, *specs, *sub_freq_range;
2280         u8 num_freq_ranges;
2281         int i;
2282
2283         if (!rdev->wiphy.sar_capa)
2284                 return 0;
2285
2286         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2287
2288         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2289         if (!sar_capa)
2290                 return -ENOSPC;
2291
2292         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2293                 goto fail;
2294
2295         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2296         if (!specs)
2297                 goto fail;
2298
2299         /* report supported freq_ranges */
2300         for (i = 0; i < num_freq_ranges; i++) {
2301                 sub_freq_range = nla_nest_start(msg, i + 1);
2302                 if (!sub_freq_range)
2303                         goto fail;
2304
2305                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2306                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2307                         goto fail;
2308
2309                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2310                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2311                         goto fail;
2312
2313                 nla_nest_end(msg, sub_freq_range);
2314         }
2315
2316         nla_nest_end(msg, specs);
2317         nla_nest_end(msg, sar_capa);
2318
2319         return 0;
2320 fail:
2321         nla_nest_cancel(msg, sar_capa);
2322         return -ENOBUFS;
2323 }
2324
2325 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2326 {
2327         struct nlattr *config;
2328
2329         if (!wiphy->mbssid_max_interfaces)
2330                 return 0;
2331
2332         config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2333         if (!config)
2334                 return -ENOBUFS;
2335
2336         if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2337                        wiphy->mbssid_max_interfaces))
2338                 goto fail;
2339
2340         if (wiphy->ema_max_profile_periodicity &&
2341             nla_put_u8(msg,
2342                        NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2343                        wiphy->ema_max_profile_periodicity))
2344                 goto fail;
2345
2346         nla_nest_end(msg, config);
2347         return 0;
2348
2349 fail:
2350         nla_nest_cancel(msg, config);
2351         return -ENOBUFS;
2352 }
2353
2354 struct nl80211_dump_wiphy_state {
2355         s64 filter_wiphy;
2356         long start;
2357         long split_start, band_start, chan_start, capa_start;
2358         bool split;
2359 };
2360
2361 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2362                               enum nl80211_commands cmd,
2363                               struct sk_buff *msg, u32 portid, u32 seq,
2364                               int flags, struct nl80211_dump_wiphy_state *state)
2365 {
2366         void *hdr;
2367         struct nlattr *nl_bands, *nl_band;
2368         struct nlattr *nl_freqs, *nl_freq;
2369         struct nlattr *nl_cmds;
2370         enum nl80211_band band;
2371         struct ieee80211_channel *chan;
2372         int i;
2373         const struct ieee80211_txrx_stypes *mgmt_stypes =
2374                                 rdev->wiphy.mgmt_stypes;
2375         u32 features;
2376
2377         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2378         if (!hdr)
2379                 return -ENOBUFS;
2380
2381         if (WARN_ON(!state))
2382                 return -EINVAL;
2383
2384         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2385             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2386                            wiphy_name(&rdev->wiphy)) ||
2387             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2388                         cfg80211_rdev_list_generation))
2389                 goto nla_put_failure;
2390
2391         if (cmd != NL80211_CMD_NEW_WIPHY)
2392                 goto finish;
2393
2394         switch (state->split_start) {
2395         case 0:
2396                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2397                                rdev->wiphy.retry_short) ||
2398                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2399                                rdev->wiphy.retry_long) ||
2400                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2401                                 rdev->wiphy.frag_threshold) ||
2402                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2403                                 rdev->wiphy.rts_threshold) ||
2404                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2405                                rdev->wiphy.coverage_class) ||
2406                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2407                                rdev->wiphy.max_scan_ssids) ||
2408                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2409                                rdev->wiphy.max_sched_scan_ssids) ||
2410                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2411                                 rdev->wiphy.max_scan_ie_len) ||
2412                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2413                                 rdev->wiphy.max_sched_scan_ie_len) ||
2414                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2415                                rdev->wiphy.max_match_sets))
2416                         goto nla_put_failure;
2417
2418                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2419                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2420                         goto nla_put_failure;
2421                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2422                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2423                         goto nla_put_failure;
2424                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2425                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2426                         goto nla_put_failure;
2427                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2428                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2429                         goto nla_put_failure;
2430                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2431                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2432                         goto nla_put_failure;
2433                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2434                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2435                         goto nla_put_failure;
2436                 state->split_start++;
2437                 if (state->split)
2438                         break;
2439                 fallthrough;
2440         case 1:
2441                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2442                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2443                             rdev->wiphy.cipher_suites))
2444                         goto nla_put_failure;
2445
2446                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2447                                rdev->wiphy.max_num_pmkids))
2448                         goto nla_put_failure;
2449
2450                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2451                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2452                         goto nla_put_failure;
2453
2454                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2455                                 rdev->wiphy.available_antennas_tx) ||
2456                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2457                                 rdev->wiphy.available_antennas_rx))
2458                         goto nla_put_failure;
2459
2460                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2461                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2462                                 rdev->wiphy.probe_resp_offload))
2463                         goto nla_put_failure;
2464
2465                 if ((rdev->wiphy.available_antennas_tx ||
2466                      rdev->wiphy.available_antennas_rx) &&
2467                     rdev->ops->get_antenna) {
2468                         u32 tx_ant = 0, rx_ant = 0;
2469                         int res;
2470
2471                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2472                         if (!res) {
2473                                 if (nla_put_u32(msg,
2474                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2475                                                 tx_ant) ||
2476                                     nla_put_u32(msg,
2477                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2478                                                 rx_ant))
2479                                         goto nla_put_failure;
2480                         }
2481                 }
2482
2483                 state->split_start++;
2484                 if (state->split)
2485                         break;
2486                 fallthrough;
2487         case 2:
2488                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2489                                         rdev->wiphy.interface_modes))
2490                                 goto nla_put_failure;
2491                 state->split_start++;
2492                 if (state->split)
2493                         break;
2494                 fallthrough;
2495         case 3:
2496                 nl_bands = nla_nest_start_noflag(msg,
2497                                                  NL80211_ATTR_WIPHY_BANDS);
2498                 if (!nl_bands)
2499                         goto nla_put_failure;
2500
2501                 for (band = state->band_start;
2502                      band < (state->split ?
2503                                 NUM_NL80211_BANDS :
2504                                 NL80211_BAND_60GHZ + 1);
2505                      band++) {
2506                         struct ieee80211_supported_band *sband;
2507
2508                         /* omit higher bands for ancient software */
2509                         if (band > NL80211_BAND_5GHZ && !state->split)
2510                                 break;
2511
2512                         sband = rdev->wiphy.bands[band];
2513
2514                         if (!sband)
2515                                 continue;
2516
2517                         nl_band = nla_nest_start_noflag(msg, band);
2518                         if (!nl_band)
2519                                 goto nla_put_failure;
2520
2521                         switch (state->chan_start) {
2522                         case 0:
2523                                 if (nl80211_send_band_rateinfo(msg, sband,
2524                                                                state->split))
2525                                         goto nla_put_failure;
2526                                 state->chan_start++;
2527                                 if (state->split)
2528                                         break;
2529                                 fallthrough;
2530                         default:
2531                                 /* add frequencies */
2532                                 nl_freqs = nla_nest_start_noflag(msg,
2533                                                                  NL80211_BAND_ATTR_FREQS);
2534                                 if (!nl_freqs)
2535                                         goto nla_put_failure;
2536
2537                                 for (i = state->chan_start - 1;
2538                                      i < sband->n_channels;
2539                                      i++) {
2540                                         nl_freq = nla_nest_start_noflag(msg,
2541                                                                         i);
2542                                         if (!nl_freq)
2543                                                 goto nla_put_failure;
2544
2545                                         chan = &sband->channels[i];
2546
2547                                         if (nl80211_msg_put_channel(
2548                                                         msg, &rdev->wiphy, chan,
2549                                                         state->split))
2550                                                 goto nla_put_failure;
2551
2552                                         nla_nest_end(msg, nl_freq);
2553                                         if (state->split)
2554                                                 break;
2555                                 }
2556                                 if (i < sband->n_channels)
2557                                         state->chan_start = i + 2;
2558                                 else
2559                                         state->chan_start = 0;
2560                                 nla_nest_end(msg, nl_freqs);
2561                         }
2562
2563                         nla_nest_end(msg, nl_band);
2564
2565                         if (state->split) {
2566                                 /* start again here */
2567                                 if (state->chan_start)
2568                                         band--;
2569                                 break;
2570                         }
2571                 }
2572                 nla_nest_end(msg, nl_bands);
2573
2574                 if (band < NUM_NL80211_BANDS)
2575                         state->band_start = band + 1;
2576                 else
2577                         state->band_start = 0;
2578
2579                 /* if bands & channels are done, continue outside */
2580                 if (state->band_start == 0 && state->chan_start == 0)
2581                         state->split_start++;
2582                 if (state->split)
2583                         break;
2584                 fallthrough;
2585         case 4:
2586                 nl_cmds = nla_nest_start_noflag(msg,
2587                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2588                 if (!nl_cmds)
2589                         goto nla_put_failure;
2590
2591                 i = nl80211_add_commands_unsplit(rdev, msg);
2592                 if (i < 0)
2593                         goto nla_put_failure;
2594                 if (state->split) {
2595                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2596                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2597                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2598                                 CMD(channel_switch, CHANNEL_SWITCH);
2599                         CMD(set_qos_map, SET_QOS_MAP);
2600                         if (rdev->wiphy.features &
2601                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2602                                 CMD(add_tx_ts, ADD_TX_TS);
2603                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2604                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2605                         CMD(update_ft_ies, UPDATE_FT_IES);
2606                         if (rdev->wiphy.sar_capa)
2607                                 CMD(set_sar_specs, SET_SAR_SPECS);
2608                 }
2609 #undef CMD
2610
2611                 nla_nest_end(msg, nl_cmds);
2612                 state->split_start++;
2613                 if (state->split)
2614                         break;
2615                 fallthrough;
2616         case 5:
2617                 if (rdev->ops->remain_on_channel &&
2618                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2619                     nla_put_u32(msg,
2620                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2621                                 rdev->wiphy.max_remain_on_channel_duration))
2622                         goto nla_put_failure;
2623
2624                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2625                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2626                         goto nla_put_failure;
2627
2628                 state->split_start++;
2629                 if (state->split)
2630                         break;
2631                 fallthrough;
2632         case 6:
2633 #ifdef CONFIG_PM
2634                 if (nl80211_send_wowlan(msg, rdev, state->split))
2635                         goto nla_put_failure;
2636                 state->split_start++;
2637                 if (state->split)
2638                         break;
2639 #else
2640                 state->split_start++;
2641 #endif
2642                 fallthrough;
2643         case 7:
2644                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2645                                         rdev->wiphy.software_iftypes))
2646                         goto nla_put_failure;
2647
2648                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2649                                                    state->split))
2650                         goto nla_put_failure;
2651
2652                 state->split_start++;
2653                 if (state->split)
2654                         break;
2655                 fallthrough;
2656         case 8:
2657                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2658                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2659                                 rdev->wiphy.ap_sme_capa))
2660                         goto nla_put_failure;
2661
2662                 features = rdev->wiphy.features;
2663                 /*
2664                  * We can only add the per-channel limit information if the
2665                  * dump is split, otherwise it makes it too big. Therefore
2666                  * only advertise it in that case.
2667                  */
2668                 if (state->split)
2669                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2670                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2671                         goto nla_put_failure;
2672
2673                 if (rdev->wiphy.ht_capa_mod_mask &&
2674                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2675                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2676                             rdev->wiphy.ht_capa_mod_mask))
2677                         goto nla_put_failure;
2678
2679                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2680                     rdev->wiphy.max_acl_mac_addrs &&
2681                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2682                                 rdev->wiphy.max_acl_mac_addrs))
2683                         goto nla_put_failure;
2684
2685                 /*
2686                  * Any information below this point is only available to
2687                  * applications that can deal with it being split. This
2688                  * helps ensure that newly added capabilities don't break
2689                  * older tools by overrunning their buffers.
2690                  *
2691                  * We still increment split_start so that in the split
2692                  * case we'll continue with more data in the next round,
2693                  * but break unconditionally so unsplit data stops here.
2694                  */
2695                 if (state->split)
2696                         state->split_start++;
2697                 else
2698                         state->split_start = 0;
2699                 break;
2700         case 9:
2701                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2702                         goto nla_put_failure;
2703
2704                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2705                                 rdev->wiphy.max_sched_scan_plans) ||
2706                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2707                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2708                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2709                                 rdev->wiphy.max_sched_scan_plan_iterations))
2710                         goto nla_put_failure;
2711
2712                 if (rdev->wiphy.extended_capabilities &&
2713                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2714                              rdev->wiphy.extended_capabilities_len,
2715                              rdev->wiphy.extended_capabilities) ||
2716                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2717                              rdev->wiphy.extended_capabilities_len,
2718                              rdev->wiphy.extended_capabilities_mask)))
2719                         goto nla_put_failure;
2720
2721                 if (rdev->wiphy.vht_capa_mod_mask &&
2722                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2723                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2724                             rdev->wiphy.vht_capa_mod_mask))
2725                         goto nla_put_failure;
2726
2727                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2728                             rdev->wiphy.perm_addr))
2729                         goto nla_put_failure;
2730
2731                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2732                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2733                             rdev->wiphy.addr_mask))
2734                         goto nla_put_failure;
2735
2736                 if (rdev->wiphy.n_addresses > 1) {
2737                         void *attr;
2738
2739                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2740                         if (!attr)
2741                                 goto nla_put_failure;
2742
2743                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2744                                 if (nla_put(msg, i + 1, ETH_ALEN,
2745                                             rdev->wiphy.addresses[i].addr))
2746                                         goto nla_put_failure;
2747
2748                         nla_nest_end(msg, attr);
2749                 }
2750
2751                 state->split_start++;
2752                 break;
2753         case 10:
2754                 if (nl80211_send_coalesce(msg, rdev))
2755                         goto nla_put_failure;
2756
2757                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2758                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2759                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2760                         goto nla_put_failure;
2761
2762                 if (rdev->wiphy.max_ap_assoc_sta &&
2763                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2764                                 rdev->wiphy.max_ap_assoc_sta))
2765                         goto nla_put_failure;
2766
2767                 state->split_start++;
2768                 break;
2769         case 11:
2770                 if (rdev->wiphy.n_vendor_commands) {
2771                         const struct nl80211_vendor_cmd_info *info;
2772                         struct nlattr *nested;
2773
2774                         nested = nla_nest_start_noflag(msg,
2775                                                        NL80211_ATTR_VENDOR_DATA);
2776                         if (!nested)
2777                                 goto nla_put_failure;
2778
2779                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2780                                 info = &rdev->wiphy.vendor_commands[i].info;
2781                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2782                                         goto nla_put_failure;
2783                         }
2784                         nla_nest_end(msg, nested);
2785                 }
2786
2787                 if (rdev->wiphy.n_vendor_events) {
2788                         const struct nl80211_vendor_cmd_info *info;
2789                         struct nlattr *nested;
2790
2791                         nested = nla_nest_start_noflag(msg,
2792                                                        NL80211_ATTR_VENDOR_EVENTS);
2793                         if (!nested)
2794                                 goto nla_put_failure;
2795
2796                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2797                                 info = &rdev->wiphy.vendor_events[i];
2798                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2799                                         goto nla_put_failure;
2800                         }
2801                         nla_nest_end(msg, nested);
2802                 }
2803                 state->split_start++;
2804                 break;
2805         case 12:
2806                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2807                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2808                                rdev->wiphy.max_num_csa_counters))
2809                         goto nla_put_failure;
2810
2811                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2812                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2813                         goto nla_put_failure;
2814
2815                 if (rdev->wiphy.max_sched_scan_reqs &&
2816                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2817                                 rdev->wiphy.max_sched_scan_reqs))
2818                         goto nla_put_failure;
2819
2820                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2821                             sizeof(rdev->wiphy.ext_features),
2822                             rdev->wiphy.ext_features))
2823                         goto nla_put_failure;
2824
2825                 if (rdev->wiphy.bss_select_support) {
2826                         struct nlattr *nested;
2827                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2828
2829                         nested = nla_nest_start_noflag(msg,
2830                                                        NL80211_ATTR_BSS_SELECT);
2831                         if (!nested)
2832                                 goto nla_put_failure;
2833
2834                         i = 0;
2835                         while (bss_select_support) {
2836                                 if ((bss_select_support & 1) &&
2837                                     nla_put_flag(msg, i))
2838                                         goto nla_put_failure;
2839                                 i++;
2840                                 bss_select_support >>= 1;
2841                         }
2842                         nla_nest_end(msg, nested);
2843                 }
2844
2845                 state->split_start++;
2846                 break;
2847         case 13:
2848                 if (rdev->wiphy.num_iftype_ext_capab &&
2849                     rdev->wiphy.iftype_ext_capab) {
2850                         struct nlattr *nested_ext_capab, *nested;
2851
2852                         nested = nla_nest_start_noflag(msg,
2853                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2854                         if (!nested)
2855                                 goto nla_put_failure;
2856
2857                         for (i = state->capa_start;
2858                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2859                                 const struct wiphy_iftype_ext_capab *capab;
2860
2861                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2862
2863                                 nested_ext_capab = nla_nest_start_noflag(msg,
2864                                                                          i);
2865                                 if (!nested_ext_capab ||
2866                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2867                                                 capab->iftype) ||
2868                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2869                                             capab->extended_capabilities_len,
2870                                             capab->extended_capabilities) ||
2871                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2872                                             capab->extended_capabilities_len,
2873                                             capab->extended_capabilities_mask))
2874                                         goto nla_put_failure;
2875
2876                                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2877                                     (nla_put_u16(msg,
2878                                                  NL80211_ATTR_EML_CAPABILITY,
2879                                                  capab->eml_capabilities) ||
2880                                      nla_put_u16(msg,
2881                                                  NL80211_ATTR_MLD_CAPA_AND_OPS,
2882                                                  capab->mld_capa_and_ops)))
2883                                         goto nla_put_failure;
2884
2885                                 nla_nest_end(msg, nested_ext_capab);
2886                                 if (state->split)
2887                                         break;
2888                         }
2889                         nla_nest_end(msg, nested);
2890                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2891                                 state->capa_start = i + 1;
2892                                 break;
2893                         }
2894                 }
2895
2896                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2897                                 rdev->wiphy.nan_supported_bands))
2898                         goto nla_put_failure;
2899
2900                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2901                                             NL80211_EXT_FEATURE_TXQS)) {
2902                         struct cfg80211_txq_stats txqstats = {};
2903                         int res;
2904
2905                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2906                         if (!res &&
2907                             !nl80211_put_txq_stats(msg, &txqstats,
2908                                                    NL80211_ATTR_TXQ_STATS))
2909                                 goto nla_put_failure;
2910
2911                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2912                                         rdev->wiphy.txq_limit))
2913                                 goto nla_put_failure;
2914                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2915                                         rdev->wiphy.txq_memory_limit))
2916                                 goto nla_put_failure;
2917                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2918                                         rdev->wiphy.txq_quantum))
2919                                 goto nla_put_failure;
2920                 }
2921
2922                 state->split_start++;
2923                 break;
2924         case 14:
2925                 if (nl80211_send_pmsr_capa(rdev, msg))
2926                         goto nla_put_failure;
2927
2928                 state->split_start++;
2929                 break;
2930         case 15:
2931                 if (rdev->wiphy.akm_suites &&
2932                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2933                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2934                             rdev->wiphy.akm_suites))
2935                         goto nla_put_failure;
2936
2937                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2938                         goto nla_put_failure;
2939
2940                 if (nl80211_put_tid_config_support(rdev, msg))
2941                         goto nla_put_failure;
2942                 state->split_start++;
2943                 break;
2944         case 16:
2945                 if (nl80211_put_sar_specs(rdev, msg))
2946                         goto nla_put_failure;
2947
2948                 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2949                         goto nla_put_failure;
2950
2951                 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2952                                 rdev->wiphy.max_num_akm_suites))
2953                         goto nla_put_failure;
2954
2955                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
2956                         nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
2957
2958                 /* done */
2959                 state->split_start = 0;
2960                 break;
2961         }
2962  finish:
2963         genlmsg_end(msg, hdr);
2964         return 0;
2965
2966  nla_put_failure:
2967         genlmsg_cancel(msg, hdr);
2968         return -EMSGSIZE;
2969 }
2970
2971 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2972                                     struct netlink_callback *cb,
2973                                     struct nl80211_dump_wiphy_state *state)
2974 {
2975         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2976         int ret;
2977
2978         if (!tb)
2979                 return -ENOMEM;
2980
2981         ret = nlmsg_parse_deprecated(cb->nlh,
2982                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2983                                      tb, nl80211_fam.maxattr,
2984                                      nl80211_policy, NULL);
2985         /* ignore parse errors for backward compatibility */
2986         if (ret) {
2987                 ret = 0;
2988                 goto out;
2989         }
2990
2991         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2992         if (tb[NL80211_ATTR_WIPHY])
2993                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2994         if (tb[NL80211_ATTR_WDEV])
2995                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2996         if (tb[NL80211_ATTR_IFINDEX]) {
2997                 struct net_device *netdev;
2998                 struct cfg80211_registered_device *rdev;
2999                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3000
3001                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3002                 if (!netdev) {
3003                         ret = -ENODEV;
3004                         goto out;
3005                 }
3006                 if (netdev->ieee80211_ptr) {
3007                         rdev = wiphy_to_rdev(
3008                                 netdev->ieee80211_ptr->wiphy);
3009                         state->filter_wiphy = rdev->wiphy_idx;
3010                 }
3011         }
3012
3013         ret = 0;
3014 out:
3015         kfree(tb);
3016         return ret;
3017 }
3018
3019 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3020 {
3021         int idx = 0, ret;
3022         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3023         struct cfg80211_registered_device *rdev;
3024
3025         rtnl_lock();
3026         if (!state) {
3027                 state = kzalloc(sizeof(*state), GFP_KERNEL);
3028                 if (!state) {
3029                         rtnl_unlock();
3030                         return -ENOMEM;
3031                 }
3032                 state->filter_wiphy = -1;
3033                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3034                 if (ret) {
3035                         kfree(state);
3036                         rtnl_unlock();
3037                         return ret;
3038                 }
3039                 cb->args[0] = (long)state;
3040         }
3041
3042         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3043                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3044                         continue;
3045                 if (++idx <= state->start)
3046                         continue;
3047                 if (state->filter_wiphy != -1 &&
3048                     state->filter_wiphy != rdev->wiphy_idx)
3049                         continue;
3050                 /* attempt to fit multiple wiphy data chunks into the skb */
3051                 do {
3052                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3053                                                  skb,
3054                                                  NETLINK_CB(cb->skb).portid,
3055                                                  cb->nlh->nlmsg_seq,
3056                                                  NLM_F_MULTI, state);
3057                         if (ret < 0) {
3058                                 /*
3059                                  * If sending the wiphy data didn't fit (ENOBUFS
3060                                  * or EMSGSIZE returned), this SKB is still
3061                                  * empty (so it's not too big because another
3062                                  * wiphy dataset is already in the skb) and
3063                                  * we've not tried to adjust the dump allocation
3064                                  * yet ... then adjust the alloc size to be
3065                                  * bigger, and return 1 but with the empty skb.
3066                                  * This results in an empty message being RX'ed
3067                                  * in userspace, but that is ignored.
3068                                  *
3069                                  * We can then retry with the larger buffer.
3070                                  */
3071                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3072                                     !skb->len && !state->split &&
3073                                     cb->min_dump_alloc < 4096) {
3074                                         cb->min_dump_alloc = 4096;
3075                                         state->split_start = 0;
3076                                         rtnl_unlock();
3077                                         return 1;
3078                                 }
3079                                 idx--;
3080                                 break;
3081                         }
3082                 } while (state->split_start > 0);
3083                 break;
3084         }
3085         rtnl_unlock();
3086
3087         state->start = idx;
3088
3089         return skb->len;
3090 }
3091
3092 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3093 {
3094         kfree((void *)cb->args[0]);
3095         return 0;
3096 }
3097
3098 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3099 {
3100         struct sk_buff *msg;
3101         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3102         struct nl80211_dump_wiphy_state state = {};
3103
3104         msg = nlmsg_new(4096, GFP_KERNEL);
3105         if (!msg)
3106                 return -ENOMEM;
3107
3108         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3109                                info->snd_portid, info->snd_seq, 0,
3110                                &state) < 0) {
3111                 nlmsg_free(msg);
3112                 return -ENOBUFS;
3113         }
3114
3115         return genlmsg_reply(msg, info);
3116 }
3117
3118 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3119         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
3120         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
3121         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
3122         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
3123         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
3124 };
3125
3126 static int parse_txq_params(struct nlattr *tb[],
3127                             struct ieee80211_txq_params *txq_params)
3128 {
3129         u8 ac;
3130
3131         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3132             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3133             !tb[NL80211_TXQ_ATTR_AIFS])
3134                 return -EINVAL;
3135
3136         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3137         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3138         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3139         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3140         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3141
3142         if (ac >= NL80211_NUM_ACS)
3143                 return -EINVAL;
3144         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3145         return 0;
3146 }
3147
3148 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3149 {
3150         /*
3151          * You can only set the channel explicitly for some interfaces,
3152          * most have their channel managed via their respective
3153          * "establish a connection" command (connect, join, ...)
3154          *
3155          * For AP/GO and mesh mode, the channel can be set with the
3156          * channel userspace API, but is only stored and passed to the
3157          * low-level driver when the AP starts or the mesh is joined.
3158          * This is for backward compatibility, userspace can also give
3159          * the channel in the start-ap or join-mesh commands instead.
3160          *
3161          * Monitors are special as they are normally slaved to
3162          * whatever else is going on, so they have their own special
3163          * operation to set the monitor channel if possible.
3164          */
3165         return !wdev ||
3166                 wdev->iftype == NL80211_IFTYPE_AP ||
3167                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3168                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3169                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3170 }
3171
3172 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3173                           struct genl_info *info,
3174                           struct cfg80211_chan_def *chandef)
3175 {
3176         struct netlink_ext_ack *extack = info->extack;
3177         struct nlattr **attrs = info->attrs;
3178         u32 control_freq;
3179
3180         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3181                 return -EINVAL;
3182
3183         control_freq = MHZ_TO_KHZ(
3184                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3185         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3186                 control_freq +=
3187                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3188
3189         memset(chandef, 0, sizeof(*chandef));
3190         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3191         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3192         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3193         chandef->freq1_offset = control_freq % 1000;
3194         chandef->center_freq2 = 0;
3195
3196         /* Primary channel not allowed */
3197         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3198                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3199                                     "Channel is disabled");
3200                 return -EINVAL;
3201         }
3202
3203         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3204                 enum nl80211_channel_type chantype;
3205
3206                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3207
3208                 switch (chantype) {
3209                 case NL80211_CHAN_NO_HT:
3210                 case NL80211_CHAN_HT20:
3211                 case NL80211_CHAN_HT40PLUS:
3212                 case NL80211_CHAN_HT40MINUS:
3213                         cfg80211_chandef_create(chandef, chandef->chan,
3214                                                 chantype);
3215                         /* user input for center_freq is incorrect */
3216                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3217                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3218                                 NL_SET_ERR_MSG_ATTR(extack,
3219                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3220                                                     "bad center frequency 1");
3221                                 return -EINVAL;
3222                         }
3223                         /* center_freq2 must be zero */
3224                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3225                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3226                                 NL_SET_ERR_MSG_ATTR(extack,
3227                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3228                                                     "center frequency 2 can't be used");
3229                                 return -EINVAL;
3230                         }
3231                         break;
3232                 default:
3233                         NL_SET_ERR_MSG_ATTR(extack,
3234                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3235                                             "invalid channel type");
3236                         return -EINVAL;
3237                 }
3238         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3239                 chandef->width =
3240                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3241                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3242                         /* User input error for channel width doesn't match channel  */
3243                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3244                                 NL_SET_ERR_MSG_ATTR(extack,
3245                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3246                                                     "bad channel width");
3247                                 return -EINVAL;
3248                         }
3249                 }
3250                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3251                         chandef->center_freq1 =
3252                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3253                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3254                                 chandef->freq1_offset = nla_get_u32(
3255                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3256                         else
3257                                 chandef->freq1_offset = 0;
3258                 }
3259                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3260                         chandef->center_freq2 =
3261                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3262         }
3263
3264         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3265                 chandef->edmg.channels =
3266                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3267
3268                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3269                         chandef->edmg.bw_config =
3270                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3271         } else {
3272                 chandef->edmg.bw_config = 0;
3273                 chandef->edmg.channels = 0;
3274         }
3275
3276         if (!cfg80211_chandef_valid(chandef)) {
3277                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3278                 return -EINVAL;
3279         }
3280
3281         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3282                                      IEEE80211_CHAN_DISABLED)) {
3283                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3284                 return -EINVAL;
3285         }
3286
3287         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3288              chandef->width == NL80211_CHAN_WIDTH_10) &&
3289             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3290                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3291                 return -EINVAL;
3292         }
3293
3294         return 0;
3295 }
3296
3297 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3298                                  struct net_device *dev,
3299                                  struct genl_info *info,
3300                                  int _link_id)
3301 {
3302         struct cfg80211_chan_def chandef;
3303         int result;
3304         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3305         struct wireless_dev *wdev = NULL;
3306         int link_id = _link_id;
3307
3308         if (dev)
3309                 wdev = dev->ieee80211_ptr;
3310         if (!nl80211_can_set_dev_channel(wdev))
3311                 return -EOPNOTSUPP;
3312         if (wdev)
3313                 iftype = wdev->iftype;
3314
3315         if (link_id < 0) {
3316                 if (wdev && wdev->valid_links)
3317                         return -EINVAL;
3318                 link_id = 0;
3319         }
3320
3321         result = nl80211_parse_chandef(rdev, info, &chandef);
3322         if (result)
3323                 return result;
3324
3325         switch (iftype) {
3326         case NL80211_IFTYPE_AP:
3327         case NL80211_IFTYPE_P2P_GO:
3328                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3329                                                    iftype))
3330                         return -EINVAL;
3331                 if (wdev->links[link_id].ap.beacon_interval) {
3332                         struct ieee80211_channel *cur_chan;
3333
3334                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3335                             !(rdev->wiphy.features &
3336                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3337                                 return -EBUSY;
3338
3339                         /* Only allow dynamic channel width changes */
3340                         cur_chan = wdev->links[link_id].ap.chandef.chan;
3341                         if (chandef.chan != cur_chan)
3342                                 return -EBUSY;
3343
3344                         result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3345                                                        &chandef);
3346                         if (result)
3347                                 return result;
3348                         wdev->links[link_id].ap.chandef = chandef;
3349                 } else {
3350                         wdev->u.ap.preset_chandef = chandef;
3351                 }
3352                 return 0;
3353         case NL80211_IFTYPE_MESH_POINT:
3354                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3355         case NL80211_IFTYPE_MONITOR:
3356                 return cfg80211_set_monitor_channel(rdev, &chandef);
3357         default:
3358                 break;
3359         }
3360
3361         return -EINVAL;
3362 }
3363
3364 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3365 {
3366         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3367         int link_id = nl80211_link_id_or_invalid(info->attrs);
3368         struct net_device *netdev = info->user_ptr[1];
3369         int ret;
3370
3371         wdev_lock(netdev->ieee80211_ptr);
3372         ret = __nl80211_set_channel(rdev, netdev, info, link_id);
3373         wdev_unlock(netdev->ieee80211_ptr);
3374
3375         return ret;
3376 }
3377
3378 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3379 {
3380         struct cfg80211_registered_device *rdev = NULL;
3381         struct net_device *netdev = NULL;
3382         struct wireless_dev *wdev;
3383         int result = 0, rem_txq_params = 0;
3384         struct nlattr *nl_txq_params;
3385         u32 changed;
3386         u8 retry_short = 0, retry_long = 0;
3387         u32 frag_threshold = 0, rts_threshold = 0;
3388         u8 coverage_class = 0;
3389         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3390
3391         rtnl_lock();
3392         /*
3393          * Try to find the wiphy and netdev. Normally this
3394          * function shouldn't need the netdev, but this is
3395          * done for backward compatibility -- previously
3396          * setting the channel was done per wiphy, but now
3397          * it is per netdev. Previous userland like hostapd
3398          * also passed a netdev to set_wiphy, so that it is
3399          * possible to let that go to the right netdev!
3400          */
3401
3402         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3403                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3404
3405                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3406                 if (netdev && netdev->ieee80211_ptr)
3407                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3408                 else
3409                         netdev = NULL;
3410         }
3411
3412         if (!netdev) {
3413                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3414                                                   info->attrs);
3415                 if (IS_ERR(rdev)) {
3416                         rtnl_unlock();
3417                         return PTR_ERR(rdev);
3418                 }
3419                 wdev = NULL;
3420                 netdev = NULL;
3421                 result = 0;
3422         } else
3423                 wdev = netdev->ieee80211_ptr;
3424
3425         wiphy_lock(&rdev->wiphy);
3426
3427         /*
3428          * end workaround code, by now the rdev is available
3429          * and locked, and wdev may or may not be NULL.
3430          */
3431
3432         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3433                 result = cfg80211_dev_rename(
3434                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3435         rtnl_unlock();
3436
3437         if (result)
3438                 goto out;
3439
3440         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3441                 struct ieee80211_txq_params txq_params;
3442                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3443
3444                 if (!rdev->ops->set_txq_params) {
3445                         result = -EOPNOTSUPP;
3446                         goto out;
3447                 }
3448
3449                 if (!netdev) {
3450                         result = -EINVAL;
3451                         goto out;
3452                 }
3453
3454                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3455                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3456                         result = -EINVAL;
3457                         goto out;
3458                 }
3459
3460                 if (!netif_running(netdev)) {
3461                         result = -ENETDOWN;
3462                         goto out;
3463                 }
3464
3465                 nla_for_each_nested(nl_txq_params,
3466                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3467                                     rem_txq_params) {
3468                         result = nla_parse_nested_deprecated(tb,
3469                                                              NL80211_TXQ_ATTR_MAX,
3470                                                              nl_txq_params,
3471                                                              txq_params_policy,
3472                                                              info->extack);
3473                         if (result)
3474                                 goto out;
3475                         result = parse_txq_params(tb, &txq_params);
3476                         if (result)
3477                                 goto out;
3478
3479                         result = rdev_set_txq_params(rdev, netdev,
3480                                                      &txq_params);
3481                         if (result)
3482                                 goto out;
3483                 }
3484         }
3485
3486         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3487                 int link_id = nl80211_link_id_or_invalid(info->attrs);
3488
3489                 if (wdev) {
3490                         wdev_lock(wdev);
3491                         result = __nl80211_set_channel(
3492                                 rdev,
3493                                 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3494                                 info, link_id);
3495                         wdev_unlock(wdev);
3496                 } else {
3497                         result = __nl80211_set_channel(rdev, netdev, info, link_id);
3498                 }
3499
3500                 if (result)
3501                         goto out;
3502         }
3503
3504         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3505                 struct wireless_dev *txp_wdev = wdev;
3506                 enum nl80211_tx_power_setting type;
3507                 int idx, mbm = 0;
3508
3509                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3510                         txp_wdev = NULL;
3511
3512                 if (!rdev->ops->set_tx_power) {
3513                         result = -EOPNOTSUPP;
3514                         goto out;
3515                 }
3516
3517                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3518                 type = nla_get_u32(info->attrs[idx]);
3519
3520                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3521                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3522                         result = -EINVAL;
3523                         goto out;
3524                 }
3525
3526                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3527                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3528                         mbm = nla_get_u32(info->attrs[idx]);
3529                 }
3530
3531                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3532                 if (result)
3533                         goto out;
3534         }
3535
3536         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3537             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3538                 u32 tx_ant, rx_ant;
3539
3540                 if ((!rdev->wiphy.available_antennas_tx &&
3541                      !rdev->wiphy.available_antennas_rx) ||
3542                     !rdev->ops->set_antenna) {
3543                         result = -EOPNOTSUPP;
3544                         goto out;
3545                 }
3546
3547                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3548                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3549
3550                 /* reject antenna configurations which don't match the
3551                  * available antenna masks, except for the "all" mask */
3552                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3553                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3554                         result = -EINVAL;
3555                         goto out;
3556                 }
3557
3558                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3559                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3560
3561                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3562                 if (result)
3563                         goto out;
3564         }
3565
3566         changed = 0;
3567
3568         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3569                 retry_short = nla_get_u8(
3570                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3571
3572                 changed |= WIPHY_PARAM_RETRY_SHORT;
3573         }
3574
3575         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3576                 retry_long = nla_get_u8(
3577                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3578
3579                 changed |= WIPHY_PARAM_RETRY_LONG;
3580         }
3581
3582         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3583                 frag_threshold = nla_get_u32(
3584                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3585                 if (frag_threshold < 256) {
3586                         result = -EINVAL;
3587                         goto out;
3588                 }
3589
3590                 if (frag_threshold != (u32) -1) {
3591                         /*
3592                          * Fragments (apart from the last one) are required to
3593                          * have even length. Make the fragmentation code
3594                          * simpler by stripping LSB should someone try to use
3595                          * odd threshold value.
3596                          */
3597                         frag_threshold &= ~0x1;
3598                 }
3599                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3600         }
3601
3602         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3603                 rts_threshold = nla_get_u32(
3604                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3605                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3606         }
3607
3608         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3609                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3610                         result = -EINVAL;
3611                         goto out;
3612                 }
3613
3614                 coverage_class = nla_get_u8(
3615                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3616                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3617         }
3618
3619         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3620                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3621                         result = -EOPNOTSUPP;
3622                         goto out;
3623                 }
3624
3625                 changed |= WIPHY_PARAM_DYN_ACK;
3626         }
3627
3628         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3629                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3630                                              NL80211_EXT_FEATURE_TXQS)) {
3631                         result = -EOPNOTSUPP;
3632                         goto out;
3633                 }
3634                 txq_limit = nla_get_u32(
3635                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3636                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3637         }
3638
3639         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3640                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3641                                              NL80211_EXT_FEATURE_TXQS)) {
3642                         result = -EOPNOTSUPP;
3643                         goto out;
3644                 }
3645                 txq_memory_limit = nla_get_u32(
3646                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3647                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3648         }
3649
3650         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3651                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3652                                              NL80211_EXT_FEATURE_TXQS)) {
3653                         result = -EOPNOTSUPP;
3654                         goto out;
3655                 }
3656                 txq_quantum = nla_get_u32(
3657                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3658                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3659         }
3660
3661         if (changed) {
3662                 u8 old_retry_short, old_retry_long;
3663                 u32 old_frag_threshold, old_rts_threshold;
3664                 u8 old_coverage_class;
3665                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3666
3667                 if (!rdev->ops->set_wiphy_params) {
3668                         result = -EOPNOTSUPP;
3669                         goto out;
3670                 }
3671
3672                 old_retry_short = rdev->wiphy.retry_short;
3673                 old_retry_long = rdev->wiphy.retry_long;
3674                 old_frag_threshold = rdev->wiphy.frag_threshold;
3675                 old_rts_threshold = rdev->wiphy.rts_threshold;
3676                 old_coverage_class = rdev->wiphy.coverage_class;
3677                 old_txq_limit = rdev->wiphy.txq_limit;
3678                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3679                 old_txq_quantum = rdev->wiphy.txq_quantum;
3680
3681                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3682                         rdev->wiphy.retry_short = retry_short;
3683                 if (changed & WIPHY_PARAM_RETRY_LONG)
3684                         rdev->wiphy.retry_long = retry_long;
3685                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3686                         rdev->wiphy.frag_threshold = frag_threshold;
3687                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3688                         rdev->wiphy.rts_threshold = rts_threshold;
3689                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3690                         rdev->wiphy.coverage_class = coverage_class;
3691                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3692                         rdev->wiphy.txq_limit = txq_limit;
3693                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3694                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3695                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3696                         rdev->wiphy.txq_quantum = txq_quantum;
3697
3698                 result = rdev_set_wiphy_params(rdev, changed);
3699                 if (result) {
3700                         rdev->wiphy.retry_short = old_retry_short;
3701                         rdev->wiphy.retry_long = old_retry_long;
3702                         rdev->wiphy.frag_threshold = old_frag_threshold;
3703                         rdev->wiphy.rts_threshold = old_rts_threshold;
3704                         rdev->wiphy.coverage_class = old_coverage_class;
3705                         rdev->wiphy.txq_limit = old_txq_limit;
3706                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3707                         rdev->wiphy.txq_quantum = old_txq_quantum;
3708                         goto out;
3709                 }
3710         }
3711
3712         result = 0;
3713
3714 out:
3715         wiphy_unlock(&rdev->wiphy);
3716         return result;
3717 }
3718
3719 static int nl80211_send_chandef(struct sk_buff *msg,
3720                                 const struct cfg80211_chan_def *chandef)
3721 {
3722         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3723                 return -EINVAL;
3724
3725         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3726                         chandef->chan->center_freq))
3727                 return -ENOBUFS;
3728         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3729                         chandef->chan->freq_offset))
3730                 return -ENOBUFS;
3731         switch (chandef->width) {
3732         case NL80211_CHAN_WIDTH_20_NOHT:
3733         case NL80211_CHAN_WIDTH_20:
3734         case NL80211_CHAN_WIDTH_40:
3735                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3736                                 cfg80211_get_chandef_type(chandef)))
3737                         return -ENOBUFS;
3738                 break;
3739         default:
3740                 break;
3741         }
3742         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3743                 return -ENOBUFS;
3744         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3745                 return -ENOBUFS;
3746         if (chandef->center_freq2 &&
3747             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3748                 return -ENOBUFS;
3749         return 0;
3750 }
3751
3752 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3753                               struct cfg80211_registered_device *rdev,
3754                               struct wireless_dev *wdev,
3755                               enum nl80211_commands cmd)
3756 {
3757         struct net_device *dev = wdev->netdev;
3758         void *hdr;
3759
3760         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3761                 cmd != NL80211_CMD_DEL_INTERFACE &&
3762                 cmd != NL80211_CMD_SET_INTERFACE);
3763
3764         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3765         if (!hdr)
3766                 return -1;
3767
3768         if (dev &&
3769             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3770              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3771                 goto nla_put_failure;
3772
3773         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3774             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3775             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3776                               NL80211_ATTR_PAD) ||
3777             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3778             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3779                         rdev->devlist_generation ^
3780                         (cfg80211_rdev_list_generation << 2)) ||
3781             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3782                 goto nla_put_failure;
3783
3784         if (rdev->ops->get_channel && !wdev->valid_links) {
3785                 struct cfg80211_chan_def chandef = {};
3786                 int ret;
3787
3788                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3789                 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3790                         goto nla_put_failure;
3791         }
3792
3793         if (rdev->ops->get_tx_power) {
3794                 int dbm, ret;
3795
3796                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3797                 if (ret == 0 &&
3798                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3799                                 DBM_TO_MBM(dbm)))
3800                         goto nla_put_failure;
3801         }
3802
3803         wdev_lock(wdev);
3804         switch (wdev->iftype) {
3805         case NL80211_IFTYPE_AP:
3806         case NL80211_IFTYPE_P2P_GO:
3807                 if (wdev->u.ap.ssid_len &&
3808                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3809                             wdev->u.ap.ssid))
3810                         goto nla_put_failure_locked;
3811                 break;
3812         case NL80211_IFTYPE_STATION:
3813         case NL80211_IFTYPE_P2P_CLIENT:
3814                 if (wdev->u.client.ssid_len &&
3815                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3816                             wdev->u.client.ssid))
3817                         goto nla_put_failure_locked;
3818                 break;
3819         case NL80211_IFTYPE_ADHOC:
3820                 if (wdev->u.ibss.ssid_len &&
3821                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3822                             wdev->u.ibss.ssid))
3823                         goto nla_put_failure_locked;
3824                 break;
3825         default:
3826                 /* nothing */
3827                 break;
3828         }
3829         wdev_unlock(wdev);
3830
3831         if (rdev->ops->get_txq_stats) {
3832                 struct cfg80211_txq_stats txqstats = {};
3833                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3834
3835                 if (ret == 0 &&
3836                     !nl80211_put_txq_stats(msg, &txqstats,
3837                                            NL80211_ATTR_TXQ_STATS))
3838                         goto nla_put_failure;
3839         }
3840
3841         if (wdev->valid_links) {
3842                 unsigned int link_id;
3843                 struct nlattr *links = nla_nest_start(msg,
3844                                                       NL80211_ATTR_MLO_LINKS);
3845
3846                 if (!links)
3847                         goto nla_put_failure;
3848
3849                 for_each_valid_link(wdev, link_id) {
3850                         struct nlattr *link = nla_nest_start(msg, link_id + 1);
3851
3852                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3853                                 goto nla_put_failure;
3854                         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3855                                     wdev->links[link_id].addr))
3856                                 goto nla_put_failure;
3857                         nla_nest_end(msg, link);
3858                 }
3859
3860                 nla_nest_end(msg, links);
3861         }
3862
3863         genlmsg_end(msg, hdr);
3864         return 0;
3865
3866  nla_put_failure_locked:
3867         wdev_unlock(wdev);
3868  nla_put_failure:
3869         genlmsg_cancel(msg, hdr);
3870         return -EMSGSIZE;
3871 }
3872
3873 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3874 {
3875         int wp_idx = 0;
3876         int if_idx = 0;
3877         int wp_start = cb->args[0];
3878         int if_start = cb->args[1];
3879         int filter_wiphy = -1;
3880         struct cfg80211_registered_device *rdev;
3881         struct wireless_dev *wdev;
3882         int ret;
3883
3884         rtnl_lock();
3885         if (!cb->args[2]) {
3886                 struct nl80211_dump_wiphy_state state = {
3887                         .filter_wiphy = -1,
3888                 };
3889
3890                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3891                 if (ret)
3892                         goto out_unlock;
3893
3894                 filter_wiphy = state.filter_wiphy;
3895
3896                 /*
3897                  * if filtering, set cb->args[2] to +1 since 0 is the default
3898                  * value needed to determine that parsing is necessary.
3899                  */
3900                 if (filter_wiphy >= 0)
3901                         cb->args[2] = filter_wiphy + 1;
3902                 else
3903                         cb->args[2] = -1;
3904         } else if (cb->args[2] > 0) {
3905                 filter_wiphy = cb->args[2] - 1;
3906         }
3907
3908         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3909                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3910                         continue;
3911                 if (wp_idx < wp_start) {
3912                         wp_idx++;
3913                         continue;
3914                 }
3915
3916                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3917                         continue;
3918
3919                 if_idx = 0;
3920
3921                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3922                         if (if_idx < if_start) {
3923                                 if_idx++;
3924                                 continue;
3925                         }
3926                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3927                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3928                                                rdev, wdev,
3929                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3930                                 goto out;
3931                         }
3932                         if_idx++;
3933                 }
3934
3935                 wp_idx++;
3936         }
3937  out:
3938         cb->args[0] = wp_idx;
3939         cb->args[1] = if_idx;
3940
3941         ret = skb->len;
3942  out_unlock:
3943         rtnl_unlock();
3944
3945         return ret;
3946 }
3947
3948 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3949 {
3950         struct sk_buff *msg;
3951         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3952         struct wireless_dev *wdev = info->user_ptr[1];
3953
3954         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3955         if (!msg)
3956                 return -ENOMEM;
3957
3958         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3959                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3960                 nlmsg_free(msg);
3961                 return -ENOBUFS;
3962         }
3963
3964         return genlmsg_reply(msg, info);
3965 }
3966
3967 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3968         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3969         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3970         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3971         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3972         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3973         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3974 };
3975
3976 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3977 {
3978         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3979         int flag;
3980
3981         *mntrflags = 0;
3982
3983         if (!nla)
3984                 return -EINVAL;
3985
3986         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3987                 return -EINVAL;
3988
3989         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3990                 if (flags[flag])
3991                         *mntrflags |= (1<<flag);
3992
3993         *mntrflags |= MONITOR_FLAG_CHANGED;
3994
3995         return 0;
3996 }
3997
3998 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3999                                      enum nl80211_iftype type,
4000                                      struct genl_info *info,
4001                                      struct vif_params *params)
4002 {
4003         bool change = false;
4004         int err;
4005
4006         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4007                 if (type != NL80211_IFTYPE_MONITOR)
4008                         return -EINVAL;
4009
4010                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4011                                           &params->flags);
4012                 if (err)
4013                         return err;
4014
4015                 change = true;
4016         }
4017
4018         if (params->flags & MONITOR_FLAG_ACTIVE &&
4019             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4020                 return -EOPNOTSUPP;
4021
4022         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4023                 const u8 *mumimo_groups;
4024                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4025
4026                 if (type != NL80211_IFTYPE_MONITOR)
4027                         return -EINVAL;
4028
4029                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4030                         return -EOPNOTSUPP;
4031
4032                 mumimo_groups =
4033                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4034
4035                 /* bits 0 and 63 are reserved and must be zero */
4036                 if ((mumimo_groups[0] & BIT(0)) ||
4037                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4038                         return -EINVAL;
4039
4040                 params->vht_mumimo_groups = mumimo_groups;
4041                 change = true;
4042         }
4043
4044         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4045                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4046
4047                 if (type != NL80211_IFTYPE_MONITOR)
4048                         return -EINVAL;
4049
4050                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4051                         return -EOPNOTSUPP;
4052
4053                 params->vht_mumimo_follow_addr =
4054                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4055                 change = true;
4056         }
4057
4058         return change ? 1 : 0;
4059 }
4060
4061 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4062                                struct net_device *netdev, u8 use_4addr,
4063                                enum nl80211_iftype iftype)
4064 {
4065         if (!use_4addr) {
4066                 if (netdev && netif_is_bridge_port(netdev))
4067                         return -EBUSY;
4068                 return 0;
4069         }
4070
4071         switch (iftype) {
4072         case NL80211_IFTYPE_AP_VLAN:
4073                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4074                         return 0;
4075                 break;
4076         case NL80211_IFTYPE_STATION:
4077                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4078                         return 0;
4079                 break;
4080         default:
4081                 break;
4082         }
4083
4084         return -EOPNOTSUPP;
4085 }
4086
4087 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4088 {
4089         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4090         struct vif_params params;
4091         int err;
4092         enum nl80211_iftype otype, ntype;
4093         struct net_device *dev = info->user_ptr[1];
4094         bool change = false;
4095
4096         memset(&params, 0, sizeof(params));
4097
4098         otype = ntype = dev->ieee80211_ptr->iftype;
4099
4100         if (info->attrs[NL80211_ATTR_IFTYPE]) {
4101                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4102                 if (otype != ntype)
4103                         change = true;
4104         }
4105
4106         if (info->attrs[NL80211_ATTR_MESH_ID]) {
4107                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4108
4109                 if (ntype != NL80211_IFTYPE_MESH_POINT)
4110                         return -EINVAL;
4111                 if (netif_running(dev))
4112                         return -EBUSY;
4113
4114                 wdev_lock(wdev);
4115                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4116                              IEEE80211_MAX_MESH_ID_LEN);
4117                 wdev->u.mesh.id_up_len =
4118                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4119                 memcpy(wdev->u.mesh.id,
4120                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4121                        wdev->u.mesh.id_up_len);
4122                 wdev_unlock(wdev);
4123         }
4124
4125         if (info->attrs[NL80211_ATTR_4ADDR]) {
4126                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4127                 change = true;
4128                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4129                 if (err)
4130                         return err;
4131         } else {
4132                 params.use_4addr = -1;
4133         }
4134
4135         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
4136         if (err < 0)
4137                 return err;
4138         if (err > 0)
4139                 change = true;
4140
4141         if (change)
4142                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
4143         else
4144                 err = 0;
4145
4146         if (!err && params.use_4addr != -1)
4147                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4148
4149         if (change && !err) {
4150                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4151
4152                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4153         }
4154
4155         return err;
4156 }
4157
4158 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4159 {
4160         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4161         struct vif_params params;
4162         struct wireless_dev *wdev;
4163         struct sk_buff *msg;
4164         int err;
4165         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4166
4167         memset(&params, 0, sizeof(params));
4168
4169         if (!info->attrs[NL80211_ATTR_IFNAME])
4170                 return -EINVAL;
4171
4172         if (info->attrs[NL80211_ATTR_IFTYPE])
4173                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4174
4175         if (!rdev->ops->add_virtual_intf)
4176                 return -EOPNOTSUPP;
4177
4178         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4179              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4180             info->attrs[NL80211_ATTR_MAC]) {
4181                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4182                            ETH_ALEN);
4183                 if (!is_valid_ether_addr(params.macaddr))
4184                         return -EADDRNOTAVAIL;
4185         }
4186
4187         if (info->attrs[NL80211_ATTR_4ADDR]) {
4188                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4189                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4190                 if (err)
4191                         return err;
4192         }
4193
4194         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4195                 return -EOPNOTSUPP;
4196
4197         err = nl80211_parse_mon_options(rdev, type, info, &params);
4198         if (err < 0)
4199                 return err;
4200
4201         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4202         if (!msg)
4203                 return -ENOMEM;
4204
4205         wdev = rdev_add_virtual_intf(rdev,
4206                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4207                                 NET_NAME_USER, type, &params);
4208         if (WARN_ON(!wdev)) {
4209                 nlmsg_free(msg);
4210                 return -EPROTO;
4211         } else if (IS_ERR(wdev)) {
4212                 nlmsg_free(msg);
4213                 return PTR_ERR(wdev);
4214         }
4215
4216         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4217                 wdev->owner_nlportid = info->snd_portid;
4218
4219         switch (type) {
4220         case NL80211_IFTYPE_MESH_POINT:
4221                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4222                         break;
4223                 wdev_lock(wdev);
4224                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4225                              IEEE80211_MAX_MESH_ID_LEN);
4226                 wdev->u.mesh.id_up_len =
4227                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4228                 memcpy(wdev->u.mesh.id,
4229                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4230                        wdev->u.mesh.id_up_len);
4231                 wdev_unlock(wdev);
4232                 break;
4233         case NL80211_IFTYPE_NAN:
4234         case NL80211_IFTYPE_P2P_DEVICE:
4235                 /*
4236                  * P2P Device and NAN do not have a netdev, so don't go
4237                  * through the netdev notifier and must be added here
4238                  */
4239                 cfg80211_init_wdev(wdev);
4240                 cfg80211_register_wdev(rdev, wdev);
4241                 break;
4242         default:
4243                 break;
4244         }
4245
4246         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4247                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4248                 nlmsg_free(msg);
4249                 return -ENOBUFS;
4250         }
4251
4252         return genlmsg_reply(msg, info);
4253 }
4254
4255 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4256 {
4257         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4258         int ret;
4259
4260         /* to avoid failing a new interface creation due to pending removal */
4261         cfg80211_destroy_ifaces(rdev);
4262
4263         wiphy_lock(&rdev->wiphy);
4264         ret = _nl80211_new_interface(skb, info);
4265         wiphy_unlock(&rdev->wiphy);
4266
4267         return ret;
4268 }
4269
4270 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4271 {
4272         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4273         struct wireless_dev *wdev = info->user_ptr[1];
4274
4275         if (!rdev->ops->del_virtual_intf)
4276                 return -EOPNOTSUPP;
4277
4278         /*
4279          * We hold RTNL, so this is safe, without RTNL opencount cannot
4280          * reach 0, and thus the rdev cannot be deleted.
4281          *
4282          * We need to do it for the dev_close(), since that will call
4283          * the netdev notifiers, and we need to acquire the mutex there
4284          * but don't know if we get there from here or from some other
4285          * place (e.g. "ip link set ... down").
4286          */
4287         mutex_unlock(&rdev->wiphy.mtx);
4288
4289         /*
4290          * If we remove a wireless device without a netdev then clear
4291          * user_ptr[1] so that nl80211_post_doit won't dereference it
4292          * to check if it needs to do dev_put(). Otherwise it crashes
4293          * since the wdev has been freed, unlike with a netdev where
4294          * we need the dev_put() for the netdev to really be freed.
4295          */
4296         if (!wdev->netdev)
4297                 info->user_ptr[1] = NULL;
4298         else
4299                 dev_close(wdev->netdev);
4300
4301         mutex_lock(&rdev->wiphy.mtx);
4302
4303         return cfg80211_remove_virtual_intf(rdev, wdev);
4304 }
4305
4306 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4307 {
4308         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4309         struct net_device *dev = info->user_ptr[1];
4310         u16 noack_map;
4311
4312         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4313                 return -EINVAL;
4314
4315         if (!rdev->ops->set_noack_map)
4316                 return -EOPNOTSUPP;
4317
4318         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4319
4320         return rdev_set_noack_map(rdev, dev, noack_map);
4321 }
4322
4323 struct get_key_cookie {
4324         struct sk_buff *msg;
4325         int error;
4326         int idx;
4327 };
4328
4329 static void get_key_callback(void *c, struct key_params *params)
4330 {
4331         struct nlattr *key;
4332         struct get_key_cookie *cookie = c;
4333
4334         if ((params->key &&
4335              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4336                      params->key_len, params->key)) ||
4337             (params->seq &&
4338              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4339                      params->seq_len, params->seq)) ||
4340             (params->cipher &&
4341              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4342                          params->cipher)))
4343                 goto nla_put_failure;
4344
4345         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4346         if (!key)
4347                 goto nla_put_failure;
4348
4349         if ((params->key &&
4350              nla_put(cookie->msg, NL80211_KEY_DATA,
4351                      params->key_len, params->key)) ||
4352             (params->seq &&
4353              nla_put(cookie->msg, NL80211_KEY_SEQ,
4354                      params->seq_len, params->seq)) ||
4355             (params->cipher &&
4356              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4357                          params->cipher)))
4358                 goto nla_put_failure;
4359
4360         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4361                 goto nla_put_failure;
4362
4363         nla_nest_end(cookie->msg, key);
4364
4365         return;
4366  nla_put_failure:
4367         cookie->error = 1;
4368 }
4369
4370 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4371 {
4372         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4373         int err;
4374         struct net_device *dev = info->user_ptr[1];
4375         u8 key_idx = 0;
4376         const u8 *mac_addr = NULL;
4377         bool pairwise;
4378         struct get_key_cookie cookie = {
4379                 .error = 0,
4380         };
4381         void *hdr;
4382         struct sk_buff *msg;
4383         bool bigtk_support = false;
4384
4385         if (wiphy_ext_feature_isset(&rdev->wiphy,
4386                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4387                 bigtk_support = true;
4388
4389         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4390              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4391             wiphy_ext_feature_isset(&rdev->wiphy,
4392                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4393                 bigtk_support = true;
4394
4395         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4396                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4397
4398                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4399                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4400                         return -EINVAL;
4401                 }
4402         }
4403
4404         if (info->attrs[NL80211_ATTR_MAC])
4405                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4406
4407         pairwise = !!mac_addr;
4408         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4409                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4410
4411                 if (kt != NL80211_KEYTYPE_GROUP &&
4412                     kt != NL80211_KEYTYPE_PAIRWISE)
4413                         return -EINVAL;
4414                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4415         }
4416
4417         if (!rdev->ops->get_key)
4418                 return -EOPNOTSUPP;
4419
4420         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4421                 return -ENOENT;
4422
4423         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4424         if (!msg)
4425                 return -ENOMEM;
4426
4427         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4428                              NL80211_CMD_NEW_KEY);
4429         if (!hdr)
4430                 goto nla_put_failure;
4431
4432         cookie.msg = msg;
4433         cookie.idx = key_idx;
4434
4435         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4436             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4437                 goto nla_put_failure;
4438         if (mac_addr &&
4439             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4440                 goto nla_put_failure;
4441
4442         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4443                            get_key_callback);
4444
4445         if (err)
4446                 goto free_msg;
4447
4448         if (cookie.error)
4449                 goto nla_put_failure;
4450
4451         genlmsg_end(msg, hdr);
4452         return genlmsg_reply(msg, info);
4453
4454  nla_put_failure:
4455         err = -ENOBUFS;
4456  free_msg:
4457         nlmsg_free(msg);
4458         return err;
4459 }
4460
4461 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4462 {
4463         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4464         struct key_parse key;
4465         int err;
4466         struct net_device *dev = info->user_ptr[1];
4467
4468         err = nl80211_parse_key(info, &key);
4469         if (err)
4470                 return err;
4471
4472         if (key.idx < 0)
4473                 return -EINVAL;
4474
4475         /* Only support setting default key and
4476          * Extended Key ID action NL80211_KEY_SET_TX.
4477          */
4478         if (!key.def && !key.defmgmt && !key.defbeacon &&
4479             !(key.p.mode == NL80211_KEY_SET_TX))
4480                 return -EINVAL;
4481
4482         wdev_lock(dev->ieee80211_ptr);
4483
4484         if (key.def) {
4485                 if (!rdev->ops->set_default_key) {
4486                         err = -EOPNOTSUPP;
4487                         goto out;
4488                 }
4489
4490                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4491                 if (err)
4492                         goto out;
4493
4494                 err = rdev_set_default_key(rdev, dev, key.idx,
4495                                                  key.def_uni, key.def_multi);
4496
4497                 if (err)
4498                         goto out;
4499
4500 #ifdef CONFIG_CFG80211_WEXT
4501                 dev->ieee80211_ptr->wext.default_key = key.idx;
4502 #endif
4503         } else if (key.defmgmt) {
4504                 if (key.def_uni || !key.def_multi) {
4505                         err = -EINVAL;
4506                         goto out;
4507                 }
4508
4509                 if (!rdev->ops->set_default_mgmt_key) {
4510                         err = -EOPNOTSUPP;
4511                         goto out;
4512                 }
4513
4514                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4515                 if (err)
4516                         goto out;
4517
4518                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4519                 if (err)
4520                         goto out;
4521
4522 #ifdef CONFIG_CFG80211_WEXT
4523                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4524 #endif
4525         } else if (key.defbeacon) {
4526                 if (key.def_uni || !key.def_multi) {
4527                         err = -EINVAL;
4528                         goto out;
4529                 }
4530
4531                 if (!rdev->ops->set_default_beacon_key) {
4532                         err = -EOPNOTSUPP;
4533                         goto out;
4534                 }
4535
4536                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4537                 if (err)
4538                         goto out;
4539
4540                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4541                 if (err)
4542                         goto out;
4543         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4544                    wiphy_ext_feature_isset(&rdev->wiphy,
4545                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4546                 u8 *mac_addr = NULL;
4547
4548                 if (info->attrs[NL80211_ATTR_MAC])
4549                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4550
4551                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4552                         err = -EINVAL;
4553                         goto out;
4554                 }
4555
4556                 err = rdev_add_key(rdev, dev, key.idx,
4557                                    NL80211_KEYTYPE_PAIRWISE,
4558                                    mac_addr, &key.p);
4559         } else {
4560                 err = -EINVAL;
4561         }
4562  out:
4563         wdev_unlock(dev->ieee80211_ptr);
4564
4565         return err;
4566 }
4567
4568 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4569 {
4570         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4571         int err;
4572         struct net_device *dev = info->user_ptr[1];
4573         struct key_parse key;
4574         const u8 *mac_addr = NULL;
4575
4576         err = nl80211_parse_key(info, &key);
4577         if (err)
4578                 return err;
4579
4580         if (!key.p.key) {
4581                 GENL_SET_ERR_MSG(info, "no key");
4582                 return -EINVAL;
4583         }
4584
4585         if (info->attrs[NL80211_ATTR_MAC])
4586                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4587
4588         if (key.type == -1) {
4589                 if (mac_addr)
4590                         key.type = NL80211_KEYTYPE_PAIRWISE;
4591                 else
4592                         key.type = NL80211_KEYTYPE_GROUP;
4593         }
4594
4595         /* for now */
4596         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4597             key.type != NL80211_KEYTYPE_GROUP) {
4598                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4599                 return -EINVAL;
4600         }
4601
4602         if (key.type == NL80211_KEYTYPE_GROUP &&
4603             info->attrs[NL80211_ATTR_VLAN_ID])
4604                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4605
4606         if (!rdev->ops->add_key)
4607                 return -EOPNOTSUPP;
4608
4609         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4610                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4611                                            mac_addr)) {
4612                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4613                 return -EINVAL;
4614         }
4615
4616         wdev_lock(dev->ieee80211_ptr);
4617         err = nl80211_key_allowed(dev->ieee80211_ptr);
4618         if (err)
4619                 GENL_SET_ERR_MSG(info, "key not allowed");
4620         if (!err) {
4621                 err = rdev_add_key(rdev, dev, key.idx,
4622                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4623                                     mac_addr, &key.p);
4624                 if (err)
4625                         GENL_SET_ERR_MSG(info, "key addition failed");
4626         }
4627         wdev_unlock(dev->ieee80211_ptr);
4628
4629         return err;
4630 }
4631
4632 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4633 {
4634         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4635         int err;
4636         struct net_device *dev = info->user_ptr[1];
4637         u8 *mac_addr = NULL;
4638         struct key_parse key;
4639
4640         err = nl80211_parse_key(info, &key);
4641         if (err)
4642                 return err;
4643
4644         if (info->attrs[NL80211_ATTR_MAC])
4645                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4646
4647         if (key.type == -1) {
4648                 if (mac_addr)
4649                         key.type = NL80211_KEYTYPE_PAIRWISE;
4650                 else
4651                         key.type = NL80211_KEYTYPE_GROUP;
4652         }
4653
4654         /* for now */
4655         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4656             key.type != NL80211_KEYTYPE_GROUP)
4657                 return -EINVAL;
4658
4659         if (!cfg80211_valid_key_idx(rdev, key.idx,
4660                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4661                 return -EINVAL;
4662
4663         if (!rdev->ops->del_key)
4664                 return -EOPNOTSUPP;
4665
4666         wdev_lock(dev->ieee80211_ptr);
4667         err = nl80211_key_allowed(dev->ieee80211_ptr);
4668
4669         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4670             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4671                 err = -ENOENT;
4672
4673         if (!err)
4674                 err = rdev_del_key(rdev, dev, key.idx,
4675                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4676                                    mac_addr);
4677
4678 #ifdef CONFIG_CFG80211_WEXT
4679         if (!err) {
4680                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4681                         dev->ieee80211_ptr->wext.default_key = -1;
4682                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4683                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4684         }
4685 #endif
4686         wdev_unlock(dev->ieee80211_ptr);
4687
4688         return err;
4689 }
4690
4691 /* This function returns an error or the number of nested attributes */
4692 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4693 {
4694         struct nlattr *attr;
4695         int n_entries = 0, tmp;
4696
4697         nla_for_each_nested(attr, nl_attr, tmp) {
4698                 if (nla_len(attr) != ETH_ALEN)
4699                         return -EINVAL;
4700
4701                 n_entries++;
4702         }
4703
4704         return n_entries;
4705 }
4706
4707 /*
4708  * This function parses ACL information and allocates memory for ACL data.
4709  * On successful return, the calling function is responsible to free the
4710  * ACL buffer returned by this function.
4711  */
4712 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4713                                                 struct genl_info *info)
4714 {
4715         enum nl80211_acl_policy acl_policy;
4716         struct nlattr *attr;
4717         struct cfg80211_acl_data *acl;
4718         int i = 0, n_entries, tmp;
4719
4720         if (!wiphy->max_acl_mac_addrs)
4721                 return ERR_PTR(-EOPNOTSUPP);
4722
4723         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4724                 return ERR_PTR(-EINVAL);
4725
4726         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4727         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4728             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4729                 return ERR_PTR(-EINVAL);
4730
4731         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4732                 return ERR_PTR(-EINVAL);
4733
4734         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4735         if (n_entries < 0)
4736                 return ERR_PTR(n_entries);
4737
4738         if (n_entries > wiphy->max_acl_mac_addrs)
4739                 return ERR_PTR(-ENOTSUPP);
4740
4741         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4742         if (!acl)
4743                 return ERR_PTR(-ENOMEM);
4744
4745         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4746                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4747                 i++;
4748         }
4749
4750         acl->n_acl_entries = n_entries;
4751         acl->acl_policy = acl_policy;
4752
4753         return acl;
4754 }
4755
4756 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4757 {
4758         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4759         struct net_device *dev = info->user_ptr[1];
4760         struct cfg80211_acl_data *acl;
4761         int err;
4762
4763         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4764             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4765                 return -EOPNOTSUPP;
4766
4767         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4768                 return -EINVAL;
4769
4770         acl = parse_acl_data(&rdev->wiphy, info);
4771         if (IS_ERR(acl))
4772                 return PTR_ERR(acl);
4773
4774         err = rdev_set_mac_acl(rdev, dev, acl);
4775
4776         kfree(acl);
4777
4778         return err;
4779 }
4780
4781 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4782                            u8 *rates, u8 rates_len)
4783 {
4784         u8 i;
4785         u32 mask = 0;
4786
4787         for (i = 0; i < rates_len; i++) {
4788                 int rate = (rates[i] & 0x7f) * 5;
4789                 int ridx;
4790
4791                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4792                         struct ieee80211_rate *srate =
4793                                 &sband->bitrates[ridx];
4794                         if (rate == srate->bitrate) {
4795                                 mask |= 1 << ridx;
4796                                 break;
4797                         }
4798                 }
4799                 if (ridx == sband->n_bitrates)
4800                         return 0; /* rate not found */
4801         }
4802
4803         return mask;
4804 }
4805
4806 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4807                                u8 *rates, u8 rates_len,
4808                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4809 {
4810         u8 i;
4811
4812         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4813
4814         for (i = 0; i < rates_len; i++) {
4815                 int ridx, rbit;
4816
4817                 ridx = rates[i] / 8;
4818                 rbit = BIT(rates[i] % 8);
4819
4820                 /* check validity */
4821                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4822                         return false;
4823
4824                 /* check availability */
4825                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4826                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4827                         mcs[ridx] |= rbit;
4828                 else
4829                         return false;
4830         }
4831
4832         return true;
4833 }
4834
4835 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4836 {
4837         u16 mcs_mask = 0;
4838
4839         switch (vht_mcs_map) {
4840         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4841                 break;
4842         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4843                 mcs_mask = 0x00FF;
4844                 break;
4845         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4846                 mcs_mask = 0x01FF;
4847                 break;
4848         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4849                 mcs_mask = 0x03FF;
4850                 break;
4851         default:
4852                 break;
4853         }
4854
4855         return mcs_mask;
4856 }
4857
4858 static void vht_build_mcs_mask(u16 vht_mcs_map,
4859                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4860 {
4861         u8 nss;
4862
4863         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4864                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4865                 vht_mcs_map >>= 2;
4866         }
4867 }
4868
4869 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4870                              struct nl80211_txrate_vht *txrate,
4871                              u16 mcs[NL80211_VHT_NSS_MAX])
4872 {
4873         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4874         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4875         u8 i;
4876
4877         if (!sband->vht_cap.vht_supported)
4878                 return false;
4879
4880         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4881
4882         /* Build vht_mcs_mask from VHT capabilities */
4883         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4884
4885         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4886                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4887                         mcs[i] = txrate->mcs[i];
4888                 else
4889                         return false;
4890         }
4891
4892         return true;
4893 }
4894
4895 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4896 {
4897         switch (he_mcs_map) {
4898         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4899                 return 0;
4900         case IEEE80211_HE_MCS_SUPPORT_0_7:
4901                 return 0x00FF;
4902         case IEEE80211_HE_MCS_SUPPORT_0_9:
4903                 return 0x03FF;
4904         case IEEE80211_HE_MCS_SUPPORT_0_11:
4905                 return 0xFFF;
4906         default:
4907                 break;
4908         }
4909         return 0;
4910 }
4911
4912 static void he_build_mcs_mask(u16 he_mcs_map,
4913                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4914 {
4915         u8 nss;
4916
4917         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4918                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4919                 he_mcs_map >>= 2;
4920         }
4921 }
4922
4923 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
4924                            const struct ieee80211_sta_he_cap *he_cap)
4925 {
4926         struct net_device *dev = info->user_ptr[1];
4927         struct wireless_dev *wdev = dev->ieee80211_ptr;
4928         struct cfg80211_chan_def *chandef;
4929         __le16 tx_mcs;
4930
4931         chandef = wdev_chandef(wdev, link_id);
4932         if (!chandef) {
4933                 /*
4934                  * This is probably broken, but we never maintained
4935                  * a chandef in these cases, so it always was.
4936                  */
4937                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
4938         }
4939
4940         switch (chandef->width) {
4941         case NL80211_CHAN_WIDTH_80P80:
4942                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4943                 break;
4944         case NL80211_CHAN_WIDTH_160:
4945                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4946                 break;
4947         default:
4948                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4949                 break;
4950         }
4951
4952         return le16_to_cpu(tx_mcs);
4953 }
4954
4955 static bool he_set_mcs_mask(struct genl_info *info,
4956                             struct wireless_dev *wdev,
4957                             struct ieee80211_supported_band *sband,
4958                             struct nl80211_txrate_he *txrate,
4959                             u16 mcs[NL80211_HE_NSS_MAX],
4960                             unsigned int link_id)
4961 {
4962         const struct ieee80211_sta_he_cap *he_cap;
4963         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4964         u16 tx_mcs_map = 0;
4965         u8 i;
4966
4967         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4968         if (!he_cap)
4969                 return false;
4970
4971         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4972
4973         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
4974
4975         /* Build he_mcs_mask from HE capabilities */
4976         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4977
4978         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4979                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4980                         mcs[i] = txrate->mcs[i];
4981                 else
4982                         return false;
4983         }
4984
4985         return true;
4986 }
4987
4988 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4989                                          struct nlattr *attrs[],
4990                                          enum nl80211_attrs attr,
4991                                          struct cfg80211_bitrate_mask *mask,
4992                                          struct net_device *dev,
4993                                          bool default_all_enabled,
4994                                          unsigned int link_id)
4995 {
4996         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4997         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4998         struct wireless_dev *wdev = dev->ieee80211_ptr;
4999         int rem, i;
5000         struct nlattr *tx_rates;
5001         struct ieee80211_supported_band *sband;
5002         u16 vht_tx_mcs_map, he_tx_mcs_map;
5003
5004         memset(mask, 0, sizeof(*mask));
5005         /* Default to all rates enabled */
5006         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5007                 const struct ieee80211_sta_he_cap *he_cap;
5008
5009                 if (!default_all_enabled)
5010                         break;
5011
5012                 sband = rdev->wiphy.bands[i];
5013
5014                 if (!sband)
5015                         continue;
5016
5017                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5018                 memcpy(mask->control[i].ht_mcs,
5019                        sband->ht_cap.mcs.rx_mask,
5020                        sizeof(mask->control[i].ht_mcs));
5021
5022                 if (sband->vht_cap.vht_supported) {
5023                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5024                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5025                 }
5026
5027                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5028                 if (!he_cap)
5029                         continue;
5030
5031                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5032                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5033
5034                 mask->control[i].he_gi = 0xFF;
5035                 mask->control[i].he_ltf = 0xFF;
5036         }
5037
5038         /* if no rates are given set it back to the defaults */
5039         if (!attrs[attr])
5040                 goto out;
5041
5042         /* The nested attribute uses enum nl80211_band as the index. This maps
5043          * directly to the enum nl80211_band values used in cfg80211.
5044          */
5045         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5046         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5047                 enum nl80211_band band = nla_type(tx_rates);
5048                 int err;
5049
5050                 if (band < 0 || band >= NUM_NL80211_BANDS)
5051                         return -EINVAL;
5052                 sband = rdev->wiphy.bands[band];
5053                 if (sband == NULL)
5054                         return -EINVAL;
5055                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5056                                                   tx_rates,
5057                                                   nl80211_txattr_policy,
5058                                                   info->extack);
5059                 if (err)
5060                         return err;
5061                 if (tb[NL80211_TXRATE_LEGACY]) {
5062                         mask->control[band].legacy = rateset_to_mask(
5063                                 sband,
5064                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5065                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5066                         if ((mask->control[band].legacy == 0) &&
5067                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5068                                 return -EINVAL;
5069                 }
5070                 if (tb[NL80211_TXRATE_HT]) {
5071                         if (!ht_rateset_to_mask(
5072                                         sband,
5073                                         nla_data(tb[NL80211_TXRATE_HT]),
5074                                         nla_len(tb[NL80211_TXRATE_HT]),
5075                                         mask->control[band].ht_mcs))
5076                                 return -EINVAL;
5077                 }
5078
5079                 if (tb[NL80211_TXRATE_VHT]) {
5080                         if (!vht_set_mcs_mask(
5081                                         sband,
5082                                         nla_data(tb[NL80211_TXRATE_VHT]),
5083                                         mask->control[band].vht_mcs))
5084                                 return -EINVAL;
5085                 }
5086
5087                 if (tb[NL80211_TXRATE_GI]) {
5088                         mask->control[band].gi =
5089                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5090                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5091                                 return -EINVAL;
5092                 }
5093                 if (tb[NL80211_TXRATE_HE] &&
5094                     !he_set_mcs_mask(info, wdev, sband,
5095                                      nla_data(tb[NL80211_TXRATE_HE]),
5096                                      mask->control[band].he_mcs,
5097                                      link_id))
5098                         return -EINVAL;
5099
5100                 if (tb[NL80211_TXRATE_HE_GI])
5101                         mask->control[band].he_gi =
5102                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5103                 if (tb[NL80211_TXRATE_HE_LTF])
5104                         mask->control[band].he_ltf =
5105                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5106
5107                 if (mask->control[band].legacy == 0) {
5108                         /* don't allow empty legacy rates if HT, VHT or HE
5109                          * are not even supported.
5110                          */
5111                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5112                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5113                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5114                                 return -EINVAL;
5115
5116                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5117                                 if (mask->control[band].ht_mcs[i])
5118                                         goto out;
5119
5120                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5121                                 if (mask->control[band].vht_mcs[i])
5122                                         goto out;
5123
5124                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5125                                 if (mask->control[band].he_mcs[i])
5126                                         goto out;
5127
5128                         /* legacy and mcs rates may not be both empty */
5129                         return -EINVAL;
5130                 }
5131         }
5132
5133 out:
5134         return 0;
5135 }
5136
5137 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5138                                    enum nl80211_band band,
5139                                    struct cfg80211_bitrate_mask *beacon_rate)
5140 {
5141         u32 count_ht, count_vht, count_he, i;
5142         u32 rate = beacon_rate->control[band].legacy;
5143
5144         /* Allow only one rate */
5145         if (hweight32(rate) > 1)
5146                 return -EINVAL;
5147
5148         count_ht = 0;
5149         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5150                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5151                         return -EINVAL;
5152                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5153                         count_ht++;
5154                         if (count_ht > 1)
5155                                 return -EINVAL;
5156                 }
5157                 if (count_ht && rate)
5158                         return -EINVAL;
5159         }
5160
5161         count_vht = 0;
5162         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5163                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5164                         return -EINVAL;
5165                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5166                         count_vht++;
5167                         if (count_vht > 1)
5168                                 return -EINVAL;
5169                 }
5170                 if (count_vht && rate)
5171                         return -EINVAL;
5172         }
5173
5174         count_he = 0;
5175         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5176                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5177                         return -EINVAL;
5178                 } else if (beacon_rate->control[band].he_mcs[i]) {
5179                         count_he++;
5180                         if (count_he > 1)
5181                                 return -EINVAL;
5182                 }
5183                 if (count_he && rate)
5184                         return -EINVAL;
5185         }
5186
5187         if ((count_ht && count_vht && count_he) ||
5188             (!rate && !count_ht && !count_vht && !count_he))
5189                 return -EINVAL;
5190
5191         if (rate &&
5192             !wiphy_ext_feature_isset(&rdev->wiphy,
5193                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5194                 return -EINVAL;
5195         if (count_ht &&
5196             !wiphy_ext_feature_isset(&rdev->wiphy,
5197                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5198                 return -EINVAL;
5199         if (count_vht &&
5200             !wiphy_ext_feature_isset(&rdev->wiphy,
5201                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5202                 return -EINVAL;
5203         if (count_he &&
5204             !wiphy_ext_feature_isset(&rdev->wiphy,
5205                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5206                 return -EINVAL;
5207
5208         return 0;
5209 }
5210
5211 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5212                                        struct net_device *dev,
5213                                        struct nlattr *attrs,
5214                                        struct cfg80211_mbssid_config *config,
5215                                        u8 num_elems)
5216 {
5217         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5218
5219         if (!wiphy->mbssid_max_interfaces)
5220                 return -EOPNOTSUPP;
5221
5222         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5223                              NULL) ||
5224             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5225                 return -EINVAL;
5226
5227         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5228         if (config->ema) {
5229                 if (!wiphy->ema_max_profile_periodicity)
5230                         return -EOPNOTSUPP;
5231
5232                 if (num_elems > wiphy->ema_max_profile_periodicity)
5233                         return -EINVAL;
5234         }
5235
5236         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5237         if (config->index >= wiphy->mbssid_max_interfaces ||
5238             (!config->index && !num_elems))
5239                 return -EINVAL;
5240
5241         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5242                 u32 tx_ifindex =
5243                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5244
5245                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5246                     (config->index && tx_ifindex == dev->ifindex))
5247                         return -EINVAL;
5248
5249                 if (tx_ifindex != dev->ifindex) {
5250                         struct net_device *tx_netdev =
5251                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5252
5253                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5254                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5255                             tx_netdev->ieee80211_ptr->iftype !=
5256                                                         NL80211_IFTYPE_AP) {
5257                                 dev_put(tx_netdev);
5258                                 return -EINVAL;
5259                         }
5260
5261                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5262                 } else {
5263                         config->tx_wdev = dev->ieee80211_ptr;
5264                 }
5265         } else if (!config->index) {
5266                 config->tx_wdev = dev->ieee80211_ptr;
5267         } else {
5268                 return -EINVAL;
5269         }
5270
5271         return 0;
5272 }
5273
5274 static struct cfg80211_mbssid_elems *
5275 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5276 {
5277         struct nlattr *nl_elems;
5278         struct cfg80211_mbssid_elems *elems;
5279         int rem_elems;
5280         u8 i = 0, num_elems = 0;
5281
5282         if (!wiphy->mbssid_max_interfaces)
5283                 return ERR_PTR(-EINVAL);
5284
5285         nla_for_each_nested(nl_elems, attrs, rem_elems)
5286                 num_elems++;
5287
5288         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5289         if (!elems)
5290                 return ERR_PTR(-ENOMEM);
5291
5292         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5293                 elems->elem[i].data = nla_data(nl_elems);
5294                 elems->elem[i].len = nla_len(nl_elems);
5295                 i++;
5296         }
5297         elems->cnt = num_elems;
5298         return elems;
5299 }
5300
5301 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5302                                       struct cfg80211_he_bss_color *he_bss_color)
5303 {
5304         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5305         int err;
5306
5307         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5308                                he_bss_color_policy, NULL);
5309         if (err)
5310                 return err;
5311
5312         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5313                 return -EINVAL;
5314
5315         he_bss_color->color =
5316                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5317         he_bss_color->enabled =
5318                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5319         he_bss_color->partial =
5320                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5321
5322         return 0;
5323 }
5324
5325 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5326                                 struct nlattr *attrs[],
5327                                 struct cfg80211_beacon_data *bcn)
5328 {
5329         bool haveinfo = false;
5330         int err;
5331
5332         memset(bcn, 0, sizeof(*bcn));
5333
5334         bcn->link_id = nl80211_link_id(attrs);
5335
5336         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5337                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5338                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5339                 if (!bcn->head_len)
5340                         return -EINVAL;
5341                 haveinfo = true;
5342         }
5343
5344         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5345                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5346                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5347                 haveinfo = true;
5348         }
5349
5350         if (!haveinfo)
5351                 return -EINVAL;
5352
5353         if (attrs[NL80211_ATTR_IE]) {
5354                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5355                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5356         }
5357
5358         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5359                 bcn->proberesp_ies =
5360                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5361                 bcn->proberesp_ies_len =
5362                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5363         }
5364
5365         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5366                 bcn->assocresp_ies =
5367                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5368                 bcn->assocresp_ies_len =
5369                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5370         }
5371
5372         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5373                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5374                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5375         }
5376
5377         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5378                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5379
5380                 err = nla_parse_nested_deprecated(tb,
5381                                                   NL80211_FTM_RESP_ATTR_MAX,
5382                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5383                                                   NULL, NULL);
5384                 if (err)
5385                         return err;
5386
5387                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5388                     wiphy_ext_feature_isset(&rdev->wiphy,
5389                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5390                         bcn->ftm_responder = 1;
5391                 else
5392                         return -EOPNOTSUPP;
5393
5394                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5395                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5396                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5397                 }
5398
5399                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5400                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5401                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5402                 }
5403         } else {
5404                 bcn->ftm_responder = -1;
5405         }
5406
5407         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5408                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5409                                                  &bcn->he_bss_color);
5410                 if (err)
5411                         return err;
5412                 bcn->he_bss_color_valid = true;
5413         }
5414
5415         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5416                 struct cfg80211_mbssid_elems *mbssid =
5417                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5418                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5419
5420                 if (IS_ERR(mbssid))
5421                         return PTR_ERR(mbssid);
5422
5423                 bcn->mbssid_ies = mbssid;
5424         }
5425
5426         return 0;
5427 }
5428
5429 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5430                                     struct ieee80211_he_obss_pd *he_obss_pd)
5431 {
5432         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5433         int err;
5434
5435         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5436                                he_obss_pd_policy, NULL);
5437         if (err)
5438                 return err;
5439
5440         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5441                 return -EINVAL;
5442
5443         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5444
5445         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5446                 he_obss_pd->min_offset =
5447                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5448         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5449                 he_obss_pd->max_offset =
5450                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5451         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5452                 he_obss_pd->non_srg_max_offset =
5453                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5454
5455         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5456                 return -EINVAL;
5457
5458         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5459                 memcpy(he_obss_pd->bss_color_bitmap,
5460                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5461                        sizeof(he_obss_pd->bss_color_bitmap));
5462
5463         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5464                 memcpy(he_obss_pd->partial_bssid_bitmap,
5465                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5466                        sizeof(he_obss_pd->partial_bssid_bitmap));
5467
5468         he_obss_pd->enable = true;
5469
5470         return 0;
5471 }
5472
5473 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5474                                         struct nlattr *attrs,
5475                                         struct cfg80211_ap_settings *params)
5476 {
5477         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5478         int ret;
5479         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5480
5481         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5482                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5483                 return -EINVAL;
5484
5485         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5486                                NULL, NULL);
5487         if (ret)
5488                 return ret;
5489
5490         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5491             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5492             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5493                 return -EINVAL;
5494
5495         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5496         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5497         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5498         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5499
5500         return 0;
5501 }
5502
5503 static int
5504 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5505                                      struct nlattr *attrs,
5506                                      struct cfg80211_ap_settings *params)
5507 {
5508         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5509         int ret;
5510         struct cfg80211_unsol_bcast_probe_resp *presp =
5511                                         &params->unsol_bcast_probe_resp;
5512
5513         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5514                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5515                 return -EINVAL;
5516
5517         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5518                                attrs, NULL, NULL);
5519         if (ret)
5520                 return ret;
5521
5522         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5523             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5524                 return -EINVAL;
5525
5526         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5527         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5528         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5529         return 0;
5530 }
5531
5532 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5533                                             const struct element *rates)
5534 {
5535         int i;
5536
5537         if (!rates)
5538                 return;
5539
5540         for (i = 0; i < rates->datalen; i++) {
5541                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5542                         params->ht_required = true;
5543                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5544                         params->vht_required = true;
5545                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5546                         params->he_required = true;
5547                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5548                         params->sae_h2e_required = true;
5549         }
5550 }
5551
5552 /*
5553  * Since the nl80211 API didn't include, from the beginning, attributes about
5554  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5555  * benefit of drivers that rebuild IEs in the firmware.
5556  */
5557 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5558 {
5559         const struct cfg80211_beacon_data *bcn = &params->beacon;
5560         size_t ies_len = bcn->tail_len;
5561         const u8 *ies = bcn->tail;
5562         const struct element *rates;
5563         const struct element *cap;
5564
5565         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5566         nl80211_check_ap_rate_selectors(params, rates);
5567
5568         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5569         nl80211_check_ap_rate_selectors(params, rates);
5570
5571         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5572         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5573                 params->ht_cap = (void *)cap->data;
5574         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5575         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5576                 params->vht_cap = (void *)cap->data;
5577         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5578         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5579                 params->he_cap = (void *)(cap->data + 1);
5580         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5581         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5582                 params->he_oper = (void *)(cap->data + 1);
5583         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5584         if (cap) {
5585                 if (!cap->datalen)
5586                         return -EINVAL;
5587                 params->eht_cap = (void *)(cap->data + 1);
5588                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5589                                                 (const u8 *)params->eht_cap,
5590                                                 cap->datalen - 1))
5591                         return -EINVAL;
5592         }
5593         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5594         if (cap) {
5595                 if (!cap->datalen)
5596                         return -EINVAL;
5597                 params->eht_oper = (void *)(cap->data + 1);
5598                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5599                                                 cap->datalen - 1))
5600                         return -EINVAL;
5601         }
5602         return 0;
5603 }
5604
5605 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5606                                    struct cfg80211_ap_settings *params)
5607 {
5608         struct wireless_dev *wdev;
5609
5610         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5611                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5612                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5613                         continue;
5614
5615                 if (!wdev->u.ap.preset_chandef.chan)
5616                         continue;
5617
5618                 params->chandef = wdev->u.ap.preset_chandef;
5619                 return true;
5620         }
5621
5622         return false;
5623 }
5624
5625 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5626                                     enum nl80211_auth_type auth_type,
5627                                     enum nl80211_commands cmd)
5628 {
5629         if (auth_type > NL80211_AUTHTYPE_MAX)
5630                 return false;
5631
5632         switch (cmd) {
5633         case NL80211_CMD_AUTHENTICATE:
5634                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5635                     auth_type == NL80211_AUTHTYPE_SAE)
5636                         return false;
5637                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5638                                              NL80211_EXT_FEATURE_FILS_STA) &&
5639                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5640                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5641                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5642                         return false;
5643                 return true;
5644         case NL80211_CMD_CONNECT:
5645                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5646                     !wiphy_ext_feature_isset(&rdev->wiphy,
5647                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5648                     auth_type == NL80211_AUTHTYPE_SAE)
5649                         return false;
5650
5651                 /* FILS with SK PFS or PK not supported yet */
5652                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5653                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5654                         return false;
5655                 if (!wiphy_ext_feature_isset(
5656                             &rdev->wiphy,
5657                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5658                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5659                         return false;
5660                 return true;
5661         case NL80211_CMD_START_AP:
5662                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5663                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5664                     auth_type == NL80211_AUTHTYPE_SAE)
5665                         return false;
5666                 /* FILS not supported yet */
5667                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5668                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5669                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5670                         return false;
5671                 return true;
5672         default:
5673                 return false;
5674         }
5675 }
5676
5677 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5678 {
5679         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5680         unsigned int link_id = nl80211_link_id(info->attrs);
5681         struct net_device *dev = info->user_ptr[1];
5682         struct wireless_dev *wdev = dev->ieee80211_ptr;
5683         struct cfg80211_ap_settings *params;
5684         int err;
5685
5686         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5687             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5688                 return -EOPNOTSUPP;
5689
5690         if (!rdev->ops->start_ap)
5691                 return -EOPNOTSUPP;
5692
5693         if (wdev->links[link_id].ap.beacon_interval)
5694                 return -EALREADY;
5695
5696         /* these are required for START_AP */
5697         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5698             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5699             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5700                 return -EINVAL;
5701
5702         params = kzalloc(sizeof(*params), GFP_KERNEL);
5703         if (!params)
5704                 return -ENOMEM;
5705
5706         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon);
5707         if (err)
5708                 goto out;
5709
5710         params->beacon_interval =
5711                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5712         params->dtim_period =
5713                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5714
5715         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5716                                            params->beacon_interval);
5717         if (err)
5718                 goto out;
5719
5720         /*
5721          * In theory, some of these attributes should be required here
5722          * but since they were not used when the command was originally
5723          * added, keep them optional for old user space programs to let
5724          * them continue to work with drivers that do not need the
5725          * additional information -- drivers must check!
5726          */
5727         if (info->attrs[NL80211_ATTR_SSID]) {
5728                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5729                 params->ssid_len =
5730                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5731                 if (params->ssid_len == 0) {
5732                         err = -EINVAL;
5733                         goto out;
5734                 }
5735
5736                 if (wdev->u.ap.ssid_len &&
5737                     (wdev->u.ap.ssid_len != params->ssid_len ||
5738                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5739                         /* require identical SSID for MLO */
5740                         err = -EINVAL;
5741                         goto out;
5742                 }
5743         } else if (wdev->valid_links) {
5744                 /* require SSID for MLO */
5745                 err = -EINVAL;
5746                 goto out;
5747         }
5748
5749         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5750                 params->hidden_ssid = nla_get_u32(
5751                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5752
5753         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5754
5755         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5756                 params->auth_type = nla_get_u32(
5757                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5758                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
5759                                              NL80211_CMD_START_AP)) {
5760                         err = -EINVAL;
5761                         goto out;
5762                 }
5763         } else
5764                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5765
5766         err = nl80211_crypto_settings(rdev, info, &params->crypto,
5767                                       NL80211_MAX_NR_CIPHER_SUITES);
5768         if (err)
5769                 goto out;
5770
5771         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5772                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
5773                         err = -EOPNOTSUPP;
5774                         goto out;
5775                 }
5776                 params->inactivity_timeout = nla_get_u16(
5777                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5778         }
5779
5780         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5781                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5782                         err = -EINVAL;
5783                         goto out;
5784                 }
5785                 params->p2p_ctwindow =
5786                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5787                 if (params->p2p_ctwindow != 0 &&
5788                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
5789                         err = -EINVAL;
5790                         goto out;
5791                 }
5792         }
5793
5794         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5795                 u8 tmp;
5796
5797                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5798                         err = -EINVAL;
5799                         goto out;
5800                 }
5801                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5802                 params->p2p_opp_ps = tmp;
5803                 if (params->p2p_opp_ps != 0 &&
5804                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
5805                         err = -EINVAL;
5806                         goto out;
5807                 }
5808         }
5809
5810         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5811                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
5812                 if (err)
5813                         goto out;
5814         } else if (wdev->valid_links) {
5815                 /* with MLD need to specify the channel configuration */
5816                 err = -EINVAL;
5817                 goto out;
5818         } else if (wdev->u.ap.preset_chandef.chan) {
5819                 params->chandef = wdev->u.ap.preset_chandef;
5820         } else if (!nl80211_get_ap_channel(rdev, params)) {
5821                 err = -EINVAL;
5822                 goto out;
5823         }
5824
5825         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
5826                                            wdev->iftype)) {
5827                 err = -EINVAL;
5828                 goto out;
5829         }
5830
5831         wdev_lock(wdev);
5832
5833         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5834                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5835                                                     NL80211_ATTR_TX_RATES,
5836                                                     &params->beacon_rate,
5837                                                     dev, false, link_id);
5838                 if (err)
5839                         goto out_unlock;
5840
5841                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
5842                                               &params->beacon_rate);
5843                 if (err)
5844                         goto out_unlock;
5845         }
5846
5847         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5848                 params->smps_mode =
5849                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5850                 switch (params->smps_mode) {
5851                 case NL80211_SMPS_OFF:
5852                         break;
5853                 case NL80211_SMPS_STATIC:
5854                         if (!(rdev->wiphy.features &
5855                               NL80211_FEATURE_STATIC_SMPS)) {
5856                                 err = -EINVAL;
5857                                 goto out_unlock;
5858                         }
5859                         break;
5860                 case NL80211_SMPS_DYNAMIC:
5861                         if (!(rdev->wiphy.features &
5862                               NL80211_FEATURE_DYNAMIC_SMPS)) {
5863                                 err = -EINVAL;
5864                                 goto out_unlock;
5865                         }
5866                         break;
5867                 default:
5868                         err = -EINVAL;
5869                         goto out_unlock;
5870                 }
5871         } else {
5872                 params->smps_mode = NL80211_SMPS_OFF;
5873         }
5874
5875         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5876         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
5877                 err = -EOPNOTSUPP;
5878                 goto out_unlock;
5879         }
5880
5881         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5882                 params->acl = parse_acl_data(&rdev->wiphy, info);
5883                 if (IS_ERR(params->acl)) {
5884                         err = PTR_ERR(params->acl);
5885                         params->acl = NULL;
5886                         goto out_unlock;
5887                 }
5888         }
5889
5890         params->twt_responder =
5891                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5892
5893         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5894                 err = nl80211_parse_he_obss_pd(
5895                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5896                                         &params->he_obss_pd);
5897                 if (err)
5898                         goto out_unlock;
5899         }
5900
5901         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5902                 err = nl80211_parse_fils_discovery(rdev,
5903                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5904                                                    params);
5905                 if (err)
5906                         goto out_unlock;
5907         }
5908
5909         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5910                 err = nl80211_parse_unsol_bcast_probe_resp(
5911                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5912                         params);
5913                 if (err)
5914                         goto out_unlock;
5915         }
5916
5917         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
5918                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
5919                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
5920                                                   &params->mbssid_config,
5921                                                   params->beacon.mbssid_ies ?
5922                                                         params->beacon.mbssid_ies->cnt :
5923                                                         0);
5924                 if (err)
5925                         goto out_unlock;
5926         }
5927
5928         err = nl80211_calculate_ap_params(params);
5929         if (err)
5930                 goto out_unlock;
5931
5932         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
5933                 params->flags = nla_get_u32(
5934                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
5935         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5936                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5937
5938         if (wdev->conn_owner_nlportid &&
5939             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
5940             wdev->conn_owner_nlportid != info->snd_portid) {
5941                 err = -EINVAL;
5942                 goto out_unlock;
5943         }
5944
5945         /* FIXME: validate MLO/link-id against driver capabilities */
5946
5947         err = rdev_start_ap(rdev, dev, params);
5948         if (!err) {
5949                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
5950                 wdev->links[link_id].ap.chandef = params->chandef;
5951                 wdev->u.ap.ssid_len = params->ssid_len;
5952                 memcpy(wdev->u.ap.ssid, params->ssid,
5953                        params->ssid_len);
5954
5955                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5956                         wdev->conn_owner_nlportid = info->snd_portid;
5957         }
5958 out_unlock:
5959         wdev_unlock(wdev);
5960 out:
5961         kfree(params->acl);
5962         kfree(params->beacon.mbssid_ies);
5963         if (params->mbssid_config.tx_wdev &&
5964             params->mbssid_config.tx_wdev->netdev &&
5965             params->mbssid_config.tx_wdev->netdev != dev)
5966                 dev_put(params->mbssid_config.tx_wdev->netdev);
5967         kfree(params);
5968
5969         return err;
5970 }
5971
5972 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5973 {
5974         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5975         unsigned int link_id = nl80211_link_id(info->attrs);
5976         struct net_device *dev = info->user_ptr[1];
5977         struct wireless_dev *wdev = dev->ieee80211_ptr;
5978         struct cfg80211_beacon_data params;
5979         int err;
5980
5981         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5982             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5983                 return -EOPNOTSUPP;
5984
5985         if (!rdev->ops->change_beacon)
5986                 return -EOPNOTSUPP;
5987
5988         if (!wdev->links[link_id].ap.beacon_interval)
5989                 return -EINVAL;
5990
5991         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5992         if (err)
5993                 goto out;
5994
5995         wdev_lock(wdev);
5996         err = rdev_change_beacon(rdev, dev, &params);
5997         wdev_unlock(wdev);
5998
5999 out:
6000         kfree(params.mbssid_ies);
6001         return err;
6002 }
6003
6004 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6005 {
6006         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6007         unsigned int link_id = nl80211_link_id(info->attrs);
6008         struct net_device *dev = info->user_ptr[1];
6009
6010         return cfg80211_stop_ap(rdev, dev, link_id, false);
6011 }
6012
6013 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6014         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6015         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6016         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6017         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6018         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6019         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6020 };
6021
6022 static int parse_station_flags(struct genl_info *info,
6023                                enum nl80211_iftype iftype,
6024                                struct station_parameters *params)
6025 {
6026         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6027         struct nlattr *nla;
6028         int flag;
6029
6030         /*
6031          * Try parsing the new attribute first so userspace
6032          * can specify both for older kernels.
6033          */
6034         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6035         if (nla) {
6036                 struct nl80211_sta_flag_update *sta_flags;
6037
6038                 sta_flags = nla_data(nla);
6039                 params->sta_flags_mask = sta_flags->mask;
6040                 params->sta_flags_set = sta_flags->set;
6041                 params->sta_flags_set &= params->sta_flags_mask;
6042                 if ((params->sta_flags_mask |
6043                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6044                         return -EINVAL;
6045                 return 0;
6046         }
6047
6048         /* if present, parse the old attribute */
6049
6050         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6051         if (!nla)
6052                 return 0;
6053
6054         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6055                 return -EINVAL;
6056
6057         /*
6058          * Only allow certain flags for interface types so that
6059          * other attributes are silently ignored. Remember that
6060          * this is backward compatibility code with old userspace
6061          * and shouldn't be hit in other cases anyway.
6062          */
6063         switch (iftype) {
6064         case NL80211_IFTYPE_AP:
6065         case NL80211_IFTYPE_AP_VLAN:
6066         case NL80211_IFTYPE_P2P_GO:
6067                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6068                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6069                                          BIT(NL80211_STA_FLAG_WME) |
6070                                          BIT(NL80211_STA_FLAG_MFP);
6071                 break;
6072         case NL80211_IFTYPE_P2P_CLIENT:
6073         case NL80211_IFTYPE_STATION:
6074                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6075                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6076                 break;
6077         case NL80211_IFTYPE_MESH_POINT:
6078                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6079                                          BIT(NL80211_STA_FLAG_MFP) |
6080                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6081                 break;
6082         default:
6083                 return -EINVAL;
6084         }
6085
6086         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6087                 if (flags[flag]) {
6088                         params->sta_flags_set |= (1<<flag);
6089
6090                         /* no longer support new API additions in old API */
6091                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6092                                 return -EINVAL;
6093                 }
6094         }
6095
6096         return 0;
6097 }
6098
6099 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6100 {
6101         struct nlattr *rate;
6102         u32 bitrate;
6103         u16 bitrate_compat;
6104         enum nl80211_rate_info rate_flg;
6105
6106         rate = nla_nest_start_noflag(msg, attr);
6107         if (!rate)
6108                 return false;
6109
6110         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6111         bitrate = cfg80211_calculate_bitrate(info);
6112         /* report 16-bit bitrate only if we can */
6113         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6114         if (bitrate > 0 &&
6115             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6116                 return false;
6117         if (bitrate_compat > 0 &&
6118             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6119                 return false;
6120
6121         switch (info->bw) {
6122         case RATE_INFO_BW_5:
6123                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6124                 break;
6125         case RATE_INFO_BW_10:
6126                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6127                 break;
6128         default:
6129                 WARN_ON(1);
6130                 fallthrough;
6131         case RATE_INFO_BW_20:
6132                 rate_flg = 0;
6133                 break;
6134         case RATE_INFO_BW_40:
6135                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6136                 break;
6137         case RATE_INFO_BW_80:
6138                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6139                 break;
6140         case RATE_INFO_BW_160:
6141                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6142                 break;
6143         case RATE_INFO_BW_HE_RU:
6144                 rate_flg = 0;
6145                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6146                 break;
6147         case RATE_INFO_BW_320:
6148                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6149                 break;
6150         case RATE_INFO_BW_EHT_RU:
6151                 rate_flg = 0;
6152                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6153                 break;
6154         }
6155
6156         if (rate_flg && nla_put_flag(msg, rate_flg))
6157                 return false;
6158
6159         if (info->flags & RATE_INFO_FLAGS_MCS) {
6160                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6161                         return false;
6162                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6163                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6164                         return false;
6165         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6166                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6167                         return false;
6168                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6169                         return false;
6170                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6171                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6172                         return false;
6173         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6174                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6175                         return false;
6176                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6177                         return false;
6178                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6179                         return false;
6180                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6181                         return false;
6182                 if (info->bw == RATE_INFO_BW_HE_RU &&
6183                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6184                                info->he_ru_alloc))
6185                         return false;
6186         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6187                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6188                         return false;
6189                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6190                         return false;
6191                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6192                         return false;
6193                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6194                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6195                                info->eht_ru_alloc))
6196                         return false;
6197         }
6198
6199         nla_nest_end(msg, rate);
6200         return true;
6201 }
6202
6203 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6204                                int id)
6205 {
6206         void *attr;
6207         int i = 0;
6208
6209         if (!mask)
6210                 return true;
6211
6212         attr = nla_nest_start_noflag(msg, id);
6213         if (!attr)
6214                 return false;
6215
6216         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6217                 if (!(mask & BIT(i)))
6218                         continue;
6219
6220                 if (nla_put_u8(msg, i, signal[i]))
6221                         return false;
6222         }
6223
6224         nla_nest_end(msg, attr);
6225
6226         return true;
6227 }
6228
6229 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6230                                 u32 seq, int flags,
6231                                 struct cfg80211_registered_device *rdev,
6232                                 struct net_device *dev,
6233                                 const u8 *mac_addr, struct station_info *sinfo)
6234 {
6235         void *hdr;
6236         struct nlattr *sinfoattr, *bss_param;
6237
6238         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6239         if (!hdr) {
6240                 cfg80211_sinfo_release_content(sinfo);
6241                 return -1;
6242         }
6243
6244         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6245             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6246             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6247                 goto nla_put_failure;
6248
6249         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6250         if (!sinfoattr)
6251                 goto nla_put_failure;
6252
6253 #define PUT_SINFO(attr, memb, type) do {                                \
6254         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6255         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6256             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6257                              sinfo->memb))                              \
6258                 goto nla_put_failure;                                   \
6259         } while (0)
6260 #define PUT_SINFO_U64(attr, memb) do {                                  \
6261         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6262             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6263                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6264                 goto nla_put_failure;                                   \
6265         } while (0)
6266
6267         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6268         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6269         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6270
6271         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6272                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6273             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6274                         (u32)sinfo->rx_bytes))
6275                 goto nla_put_failure;
6276
6277         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6278                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6279             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6280                         (u32)sinfo->tx_bytes))
6281                 goto nla_put_failure;
6282
6283         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6284         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6285         PUT_SINFO(LLID, llid, u16);
6286         PUT_SINFO(PLID, plid, u16);
6287         PUT_SINFO(PLINK_STATE, plink_state, u8);
6288         PUT_SINFO_U64(RX_DURATION, rx_duration);
6289         PUT_SINFO_U64(TX_DURATION, tx_duration);
6290
6291         if (wiphy_ext_feature_isset(&rdev->wiphy,
6292                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6293                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6294
6295         switch (rdev->wiphy.signal_type) {
6296         case CFG80211_SIGNAL_TYPE_MBM:
6297                 PUT_SINFO(SIGNAL, signal, u8);
6298                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6299                 break;
6300         default:
6301                 break;
6302         }
6303         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6304                 if (!nl80211_put_signal(msg, sinfo->chains,
6305                                         sinfo->chain_signal,
6306                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6307                         goto nla_put_failure;
6308         }
6309         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6310                 if (!nl80211_put_signal(msg, sinfo->chains,
6311                                         sinfo->chain_signal_avg,
6312                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6313                         goto nla_put_failure;
6314         }
6315         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6316                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6317                                           NL80211_STA_INFO_TX_BITRATE))
6318                         goto nla_put_failure;
6319         }
6320         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6321                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6322                                           NL80211_STA_INFO_RX_BITRATE))
6323                         goto nla_put_failure;
6324         }
6325
6326         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6327         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6328         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6329         PUT_SINFO(TX_FAILED, tx_failed, u32);
6330         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6331         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6332         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6333         PUT_SINFO(LOCAL_PM, local_pm, u32);
6334         PUT_SINFO(PEER_PM, peer_pm, u32);
6335         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6336         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6337         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6338
6339         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6340                 bss_param = nla_nest_start_noflag(msg,
6341                                                   NL80211_STA_INFO_BSS_PARAM);
6342                 if (!bss_param)
6343                         goto nla_put_failure;
6344
6345                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6346                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6347                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6348                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6349                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6350                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6351                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6352                                sinfo->bss_param.dtim_period) ||
6353                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6354                                 sinfo->bss_param.beacon_interval))
6355                         goto nla_put_failure;
6356
6357                 nla_nest_end(msg, bss_param);
6358         }
6359         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6360             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6361                     sizeof(struct nl80211_sta_flag_update),
6362                     &sinfo->sta_flags))
6363                 goto nla_put_failure;
6364
6365         PUT_SINFO_U64(T_OFFSET, t_offset);
6366         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6367         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6368         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6369         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6370         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6371         if (wiphy_ext_feature_isset(&rdev->wiphy,
6372                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6373                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6374                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6375         }
6376
6377 #undef PUT_SINFO
6378 #undef PUT_SINFO_U64
6379
6380         if (sinfo->pertid) {
6381                 struct nlattr *tidsattr;
6382                 int tid;
6383
6384                 tidsattr = nla_nest_start_noflag(msg,
6385                                                  NL80211_STA_INFO_TID_STATS);
6386                 if (!tidsattr)
6387                         goto nla_put_failure;
6388
6389                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6390                         struct cfg80211_tid_stats *tidstats;
6391                         struct nlattr *tidattr;
6392
6393                         tidstats = &sinfo->pertid[tid];
6394
6395                         if (!tidstats->filled)
6396                                 continue;
6397
6398                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6399                         if (!tidattr)
6400                                 goto nla_put_failure;
6401
6402 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6403         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6404             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6405                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6406                 goto nla_put_failure;                                   \
6407         } while (0)
6408
6409                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6410                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6411                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6412                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6413
6414 #undef PUT_TIDVAL_U64
6415                         if ((tidstats->filled &
6416                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6417                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6418                                                    NL80211_TID_STATS_TXQ_STATS))
6419                                 goto nla_put_failure;
6420
6421                         nla_nest_end(msg, tidattr);
6422                 }
6423
6424                 nla_nest_end(msg, tidsattr);
6425         }
6426
6427         nla_nest_end(msg, sinfoattr);
6428
6429         if (sinfo->assoc_req_ies_len &&
6430             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6431                     sinfo->assoc_req_ies))
6432                 goto nla_put_failure;
6433
6434         cfg80211_sinfo_release_content(sinfo);
6435         genlmsg_end(msg, hdr);
6436         return 0;
6437
6438  nla_put_failure:
6439         cfg80211_sinfo_release_content(sinfo);
6440         genlmsg_cancel(msg, hdr);
6441         return -EMSGSIZE;
6442 }
6443
6444 static int nl80211_dump_station(struct sk_buff *skb,
6445                                 struct netlink_callback *cb)
6446 {
6447         struct station_info sinfo;
6448         struct cfg80211_registered_device *rdev;
6449         struct wireless_dev *wdev;
6450         u8 mac_addr[ETH_ALEN];
6451         int sta_idx = cb->args[2];
6452         int err;
6453
6454         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6455         if (err)
6456                 return err;
6457         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6458         __acquire(&rdev->wiphy.mtx);
6459
6460         if (!wdev->netdev) {
6461                 err = -EINVAL;
6462                 goto out_err;
6463         }
6464
6465         if (!rdev->ops->dump_station) {
6466                 err = -EOPNOTSUPP;
6467                 goto out_err;
6468         }
6469
6470         while (1) {
6471                 memset(&sinfo, 0, sizeof(sinfo));
6472                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6473                                         mac_addr, &sinfo);
6474                 if (err == -ENOENT)
6475                         break;
6476                 if (err)
6477                         goto out_err;
6478
6479                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6480                                 NETLINK_CB(cb->skb).portid,
6481                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6482                                 rdev, wdev->netdev, mac_addr,
6483                                 &sinfo) < 0)
6484                         goto out;
6485
6486                 sta_idx++;
6487         }
6488
6489  out:
6490         cb->args[2] = sta_idx;
6491         err = skb->len;
6492  out_err:
6493         wiphy_unlock(&rdev->wiphy);
6494
6495         return err;
6496 }
6497
6498 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6499 {
6500         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6501         struct net_device *dev = info->user_ptr[1];
6502         struct station_info sinfo;
6503         struct sk_buff *msg;
6504         u8 *mac_addr = NULL;
6505         int err;
6506
6507         memset(&sinfo, 0, sizeof(sinfo));
6508
6509         if (!info->attrs[NL80211_ATTR_MAC])
6510                 return -EINVAL;
6511
6512         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6513
6514         if (!rdev->ops->get_station)
6515                 return -EOPNOTSUPP;
6516
6517         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6518         if (err)
6519                 return err;
6520
6521         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6522         if (!msg) {
6523                 cfg80211_sinfo_release_content(&sinfo);
6524                 return -ENOMEM;
6525         }
6526
6527         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6528                                  info->snd_portid, info->snd_seq, 0,
6529                                  rdev, dev, mac_addr, &sinfo) < 0) {
6530                 nlmsg_free(msg);
6531                 return -ENOBUFS;
6532         }
6533
6534         return genlmsg_reply(msg, info);
6535 }
6536
6537 int cfg80211_check_station_change(struct wiphy *wiphy,
6538                                   struct station_parameters *params,
6539                                   enum cfg80211_station_type statype)
6540 {
6541         if (params->listen_interval != -1 &&
6542             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6543                 return -EINVAL;
6544
6545         if (params->support_p2p_ps != -1 &&
6546             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6547                 return -EINVAL;
6548
6549         if (params->aid &&
6550             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6551             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6552                 return -EINVAL;
6553
6554         /* When you run into this, adjust the code below for the new flag */
6555         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6556
6557         switch (statype) {
6558         case CFG80211_STA_MESH_PEER_KERNEL:
6559         case CFG80211_STA_MESH_PEER_USER:
6560                 /*
6561                  * No ignoring the TDLS flag here -- the userspace mesh
6562                  * code doesn't have the bug of including TDLS in the
6563                  * mask everywhere.
6564                  */
6565                 if (params->sta_flags_mask &
6566                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6567                                   BIT(NL80211_STA_FLAG_MFP) |
6568                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6569                         return -EINVAL;
6570                 break;
6571         case CFG80211_STA_TDLS_PEER_SETUP:
6572         case CFG80211_STA_TDLS_PEER_ACTIVE:
6573                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6574                         return -EINVAL;
6575                 /* ignore since it can't change */
6576                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6577                 break;
6578         default:
6579                 /* disallow mesh-specific things */
6580                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6581                         return -EINVAL;
6582                 if (params->local_pm)
6583                         return -EINVAL;
6584                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6585                         return -EINVAL;
6586         }
6587
6588         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6589             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6590                 /* TDLS can't be set, ... */
6591                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6592                         return -EINVAL;
6593                 /*
6594                  * ... but don't bother the driver with it. This works around
6595                  * a hostapd/wpa_supplicant issue -- it always includes the
6596                  * TLDS_PEER flag in the mask even for AP mode.
6597                  */
6598                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6599         }
6600
6601         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6602             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6603                 /* reject other things that can't change */
6604                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6605                         return -EINVAL;
6606                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6607                         return -EINVAL;
6608                 if (params->link_sta_params.supported_rates)
6609                         return -EINVAL;
6610                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6611                     params->link_sta_params.vht_capa ||
6612                     params->link_sta_params.he_capa ||
6613                     params->link_sta_params.eht_capa)
6614                         return -EINVAL;
6615         }
6616
6617         if (statype != CFG80211_STA_AP_CLIENT &&
6618             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6619                 if (params->vlan)
6620                         return -EINVAL;
6621         }
6622
6623         switch (statype) {
6624         case CFG80211_STA_AP_MLME_CLIENT:
6625                 /* Use this only for authorizing/unauthorizing a station */
6626                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6627                         return -EOPNOTSUPP;
6628                 break;
6629         case CFG80211_STA_AP_CLIENT:
6630         case CFG80211_STA_AP_CLIENT_UNASSOC:
6631                 /* accept only the listed bits */
6632                 if (params->sta_flags_mask &
6633                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6634                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6635                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6636                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6637                                   BIT(NL80211_STA_FLAG_WME) |
6638                                   BIT(NL80211_STA_FLAG_MFP)))
6639                         return -EINVAL;
6640
6641                 /* but authenticated/associated only if driver handles it */
6642                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6643                     params->sta_flags_mask &
6644                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6645                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6646                         return -EINVAL;
6647                 break;
6648         case CFG80211_STA_IBSS:
6649         case CFG80211_STA_AP_STA:
6650                 /* reject any changes other than AUTHORIZED */
6651                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6652                         return -EINVAL;
6653                 break;
6654         case CFG80211_STA_TDLS_PEER_SETUP:
6655                 /* reject any changes other than AUTHORIZED or WME */
6656                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6657                                                BIT(NL80211_STA_FLAG_WME)))
6658                         return -EINVAL;
6659                 /* force (at least) rates when authorizing */
6660                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6661                     !params->link_sta_params.supported_rates)
6662                         return -EINVAL;
6663                 break;
6664         case CFG80211_STA_TDLS_PEER_ACTIVE:
6665                 /* reject any changes */
6666                 return -EINVAL;
6667         case CFG80211_STA_MESH_PEER_KERNEL:
6668                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6669                         return -EINVAL;
6670                 break;
6671         case CFG80211_STA_MESH_PEER_USER:
6672                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6673                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6674                         return -EINVAL;
6675                 break;
6676         }
6677
6678         /*
6679          * Older kernel versions ignored this attribute entirely, so don't
6680          * reject attempts to update it but mark it as unused instead so the
6681          * driver won't look at the data.
6682          */
6683         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6684             statype != CFG80211_STA_TDLS_PEER_SETUP)
6685                 params->link_sta_params.opmode_notif_used = false;
6686
6687         return 0;
6688 }
6689 EXPORT_SYMBOL(cfg80211_check_station_change);
6690
6691 /*
6692  * Get vlan interface making sure it is running and on the right wiphy.
6693  */
6694 static struct net_device *get_vlan(struct genl_info *info,
6695                                    struct cfg80211_registered_device *rdev)
6696 {
6697         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6698         struct net_device *v;
6699         int ret;
6700
6701         if (!vlanattr)
6702                 return NULL;
6703
6704         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6705         if (!v)
6706                 return ERR_PTR(-ENODEV);
6707
6708         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6709                 ret = -EINVAL;
6710                 goto error;
6711         }
6712
6713         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6714             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6715             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6716                 ret = -EINVAL;
6717                 goto error;
6718         }
6719
6720         if (!netif_running(v)) {
6721                 ret = -ENETDOWN;
6722                 goto error;
6723         }
6724
6725         return v;
6726  error:
6727         dev_put(v);
6728         return ERR_PTR(ret);
6729 }
6730
6731 static int nl80211_parse_sta_wme(struct genl_info *info,
6732                                  struct station_parameters *params)
6733 {
6734         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6735         struct nlattr *nla;
6736         int err;
6737
6738         /* parse WME attributes if present */
6739         if (!info->attrs[NL80211_ATTR_STA_WME])
6740                 return 0;
6741
6742         nla = info->attrs[NL80211_ATTR_STA_WME];
6743         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6744                                           nl80211_sta_wme_policy,
6745                                           info->extack);
6746         if (err)
6747                 return err;
6748
6749         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6750                 params->uapsd_queues = nla_get_u8(
6751                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6752         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6753                 return -EINVAL;
6754
6755         if (tb[NL80211_STA_WME_MAX_SP])
6756                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6757
6758         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6759                 return -EINVAL;
6760
6761         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6762
6763         return 0;
6764 }
6765
6766 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6767                                       struct station_parameters *params)
6768 {
6769         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6770                 params->supported_channels =
6771                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6772                 params->supported_channels_len =
6773                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6774                 /*
6775                  * Need to include at least one (first channel, number of
6776                  * channels) tuple for each subband (checked in policy),
6777                  * and must have proper tuples for the rest of the data as well.
6778                  */
6779                 if (params->supported_channels_len % 2)
6780                         return -EINVAL;
6781         }
6782
6783         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6784                 params->supported_oper_classes =
6785                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6786                 params->supported_oper_classes_len =
6787                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6788         }
6789         return 0;
6790 }
6791
6792 static int nl80211_set_station_tdls(struct genl_info *info,
6793                                     struct station_parameters *params)
6794 {
6795         int err;
6796         /* Dummy STA entry gets updated once the peer capabilities are known */
6797         if (info->attrs[NL80211_ATTR_PEER_AID])
6798                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6799         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6800                 params->link_sta_params.ht_capa =
6801                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6802         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6803                 params->link_sta_params.vht_capa =
6804                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6805         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6806                 params->link_sta_params.he_capa =
6807                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6808                 params->link_sta_params.he_capa_len =
6809                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6810
6811                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
6812                         params->link_sta_params.eht_capa =
6813                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6814                         params->link_sta_params.eht_capa_len =
6815                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6816
6817                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
6818                                                         (const u8 *)params->link_sta_params.eht_capa,
6819                                                         params->link_sta_params.eht_capa_len))
6820                                 return -EINVAL;
6821                 }
6822         }
6823
6824         err = nl80211_parse_sta_channel_info(info, params);
6825         if (err)
6826                 return err;
6827
6828         return nl80211_parse_sta_wme(info, params);
6829 }
6830
6831 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6832                                              struct sta_txpwr *txpwr,
6833                                              bool *txpwr_set)
6834 {
6835         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6836         int idx;
6837
6838         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6839                 if (!rdev->ops->set_tx_power ||
6840                     !wiphy_ext_feature_isset(&rdev->wiphy,
6841                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6842                         return -EOPNOTSUPP;
6843
6844                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6845                 txpwr->type = nla_get_u8(info->attrs[idx]);
6846
6847                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
6848                         idx = NL80211_ATTR_STA_TX_POWER;
6849
6850                         if (info->attrs[idx])
6851                                 txpwr->power = nla_get_s16(info->attrs[idx]);
6852                         else
6853                                 return -EINVAL;
6854                 }
6855
6856                 *txpwr_set = true;
6857         } else {
6858                 *txpwr_set = false;
6859         }
6860
6861         return 0;
6862 }
6863
6864 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6865 {
6866         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6867         struct net_device *dev = info->user_ptr[1];
6868         struct station_parameters params;
6869         u8 *mac_addr;
6870         int err;
6871
6872         memset(&params, 0, sizeof(params));
6873
6874         if (!rdev->ops->change_station)
6875                 return -EOPNOTSUPP;
6876
6877         /*
6878          * AID and listen_interval properties can be set only for unassociated
6879          * station. Include these parameters here and will check them in
6880          * cfg80211_check_station_change().
6881          */
6882         if (info->attrs[NL80211_ATTR_STA_AID])
6883                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6884
6885         if (info->attrs[NL80211_ATTR_VLAN_ID])
6886                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6887
6888         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6889                 params.listen_interval =
6890                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6891         else
6892                 params.listen_interval = -1;
6893
6894         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6895                 params.support_p2p_ps =
6896                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6897         else
6898                 params.support_p2p_ps = -1;
6899
6900         if (!info->attrs[NL80211_ATTR_MAC])
6901                 return -EINVAL;
6902
6903         params.link_sta_params.link_id =
6904                 nl80211_link_id_or_invalid(info->attrs);
6905
6906         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
6907                 /* If MLD_ADDR attribute is set then this is an MLD station
6908                  * and the MLD_ADDR attribute holds the MLD address and the
6909                  * MAC attribute holds for the LINK address.
6910                  * In that case, the link_id is also expected to be valid.
6911                  */
6912                 if (params.link_sta_params.link_id < 0)
6913                         return -EINVAL;
6914
6915                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
6916                 params.link_sta_params.mld_mac = mac_addr;
6917                 params.link_sta_params.link_mac =
6918                         nla_data(info->attrs[NL80211_ATTR_MAC]);
6919                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
6920                         return -EINVAL;
6921         } else {
6922                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6923         }
6924
6925
6926         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6927                 params.link_sta_params.supported_rates =
6928                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6929                 params.link_sta_params.supported_rates_len =
6930                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6931         }
6932
6933         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6934                 params.capability =
6935                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6936                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6937         }
6938
6939         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6940                 params.ext_capab =
6941                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6942                 params.ext_capab_len =
6943                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6944         }
6945
6946         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6947                 return -EINVAL;
6948
6949         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6950                 params.plink_action =
6951                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6952
6953         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6954                 params.plink_state =
6955                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6956                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6957                         params.peer_aid = nla_get_u16(
6958                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6959                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6960         }
6961
6962         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6963                 params.local_pm = nla_get_u32(
6964                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6965
6966         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6967                 params.link_sta_params.opmode_notif_used = true;
6968                 params.link_sta_params.opmode_notif =
6969                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6970         }
6971
6972         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6973                 params.link_sta_params.he_6ghz_capa =
6974                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6975
6976         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6977                 params.airtime_weight =
6978                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6979
6980         if (params.airtime_weight &&
6981             !wiphy_ext_feature_isset(&rdev->wiphy,
6982                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6983                 return -EOPNOTSUPP;
6984
6985         err = nl80211_parse_sta_txpower_setting(info,
6986                                                 &params.link_sta_params.txpwr,
6987                                                 &params.link_sta_params.txpwr_set);
6988         if (err)
6989                 return err;
6990
6991         /* Include parameters for TDLS peer (will check later) */
6992         err = nl80211_set_station_tdls(info, &params);
6993         if (err)
6994                 return err;
6995
6996         params.vlan = get_vlan(info, rdev);
6997         if (IS_ERR(params.vlan))
6998                 return PTR_ERR(params.vlan);
6999
7000         switch (dev->ieee80211_ptr->iftype) {
7001         case NL80211_IFTYPE_AP:
7002         case NL80211_IFTYPE_AP_VLAN:
7003         case NL80211_IFTYPE_P2P_GO:
7004         case NL80211_IFTYPE_P2P_CLIENT:
7005         case NL80211_IFTYPE_STATION:
7006         case NL80211_IFTYPE_ADHOC:
7007         case NL80211_IFTYPE_MESH_POINT:
7008                 break;
7009         default:
7010                 err = -EOPNOTSUPP;
7011                 goto out_put_vlan;
7012         }
7013
7014         /* driver will call cfg80211_check_station_change() */
7015         wdev_lock(dev->ieee80211_ptr);
7016         err = rdev_change_station(rdev, dev, mac_addr, &params);
7017         wdev_unlock(dev->ieee80211_ptr);
7018
7019  out_put_vlan:
7020         dev_put(params.vlan);
7021
7022         return err;
7023 }
7024
7025 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7026 {
7027         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7028         int err;
7029         struct net_device *dev = info->user_ptr[1];
7030         struct wireless_dev *wdev = dev->ieee80211_ptr;
7031         struct station_parameters params;
7032         u8 *mac_addr = NULL;
7033         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7034                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7035
7036         memset(&params, 0, sizeof(params));
7037
7038         if (!rdev->ops->add_station)
7039                 return -EOPNOTSUPP;
7040
7041         if (!info->attrs[NL80211_ATTR_MAC])
7042                 return -EINVAL;
7043
7044         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7045                 return -EINVAL;
7046
7047         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7048                 return -EINVAL;
7049
7050         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7051             !info->attrs[NL80211_ATTR_PEER_AID])
7052                 return -EINVAL;
7053
7054         params.link_sta_params.link_id =
7055                 nl80211_link_id_or_invalid(info->attrs);
7056
7057         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7058                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7059                 params.link_sta_params.mld_mac = mac_addr;
7060                 params.link_sta_params.link_mac =
7061                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7062                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7063                         return -EINVAL;
7064         } else {
7065                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7066         }
7067
7068         params.link_sta_params.supported_rates =
7069                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7070         params.link_sta_params.supported_rates_len =
7071                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7072         params.listen_interval =
7073                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7074
7075         if (info->attrs[NL80211_ATTR_VLAN_ID])
7076                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7077
7078         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7079                 params.support_p2p_ps =
7080                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7081         } else {
7082                 /*
7083                  * if not specified, assume it's supported for P2P GO interface,
7084                  * and is NOT supported for AP interface
7085                  */
7086                 params.support_p2p_ps =
7087                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7088         }
7089
7090         if (info->attrs[NL80211_ATTR_PEER_AID])
7091                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7092         else
7093                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7094
7095         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7096                 params.capability =
7097                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7098                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7099         }
7100
7101         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7102                 params.ext_capab =
7103                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7104                 params.ext_capab_len =
7105                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7106         }
7107
7108         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7109                 params.link_sta_params.ht_capa =
7110                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7111
7112         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7113                 params.link_sta_params.vht_capa =
7114                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7115
7116         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7117                 params.link_sta_params.he_capa =
7118                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7119                 params.link_sta_params.he_capa_len =
7120                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7121
7122                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7123                         params.link_sta_params.eht_capa =
7124                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7125                         params.link_sta_params.eht_capa_len =
7126                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7127
7128                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7129                                                         (const u8 *)params.link_sta_params.eht_capa,
7130                                                         params.link_sta_params.eht_capa_len))
7131                                 return -EINVAL;
7132                 }
7133         }
7134
7135         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7136                 params.link_sta_params.he_6ghz_capa =
7137                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7138
7139         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7140                 params.link_sta_params.opmode_notif_used = true;
7141                 params.link_sta_params.opmode_notif =
7142                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7143         }
7144
7145         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7146                 params.plink_action =
7147                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7148
7149         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7150                 params.airtime_weight =
7151                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7152
7153         if (params.airtime_weight &&
7154             !wiphy_ext_feature_isset(&rdev->wiphy,
7155                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7156                 return -EOPNOTSUPP;
7157
7158         err = nl80211_parse_sta_txpower_setting(info,
7159                                                 &params.link_sta_params.txpwr,
7160                                                 &params.link_sta_params.txpwr_set);
7161         if (err)
7162                 return err;
7163
7164         err = nl80211_parse_sta_channel_info(info, &params);
7165         if (err)
7166                 return err;
7167
7168         err = nl80211_parse_sta_wme(info, &params);
7169         if (err)
7170                 return err;
7171
7172         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7173                 return -EINVAL;
7174
7175         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7176          * as userspace might just pass through the capabilities from the IEs
7177          * directly, rather than enforcing this restriction and returning an
7178          * error in this case.
7179          */
7180         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7181                 params.link_sta_params.ht_capa = NULL;
7182                 params.link_sta_params.vht_capa = NULL;
7183
7184                 /* HE and EHT require WME */
7185                 if (params.link_sta_params.he_capa_len ||
7186                     params.link_sta_params.he_6ghz_capa ||
7187                     params.link_sta_params.eht_capa_len)
7188                         return -EINVAL;
7189         }
7190
7191         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7192         if (params.link_sta_params.he_6ghz_capa &&
7193             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7194                 return -EINVAL;
7195
7196         /* When you run into this, adjust the code below for the new flag */
7197         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7198
7199         switch (dev->ieee80211_ptr->iftype) {
7200         case NL80211_IFTYPE_AP:
7201         case NL80211_IFTYPE_AP_VLAN:
7202         case NL80211_IFTYPE_P2P_GO:
7203                 /* ignore WME attributes if iface/sta is not capable */
7204                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7205                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7206                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7207
7208                 /* TDLS peers cannot be added */
7209                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7210                     info->attrs[NL80211_ATTR_PEER_AID])
7211                         return -EINVAL;
7212                 /* but don't bother the driver with it */
7213                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7214
7215                 /* allow authenticated/associated only if driver handles it */
7216                 if (!(rdev->wiphy.features &
7217                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7218                     params.sta_flags_mask & auth_assoc)
7219                         return -EINVAL;
7220
7221                 /* Older userspace, or userspace wanting to be compatible with
7222                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7223                  * and assoc flags in the mask, but assumes the station will be
7224                  * added as associated anyway since this was the required driver
7225                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7226                  * introduced.
7227                  * In order to not bother drivers with this quirk in the API
7228                  * set the flags in both the mask and set for new stations in
7229                  * this case.
7230                  */
7231                 if (!(params.sta_flags_mask & auth_assoc)) {
7232                         params.sta_flags_mask |= auth_assoc;
7233                         params.sta_flags_set |= auth_assoc;
7234                 }
7235
7236                 /* must be last in here for error handling */
7237                 params.vlan = get_vlan(info, rdev);
7238                 if (IS_ERR(params.vlan))
7239                         return PTR_ERR(params.vlan);
7240                 break;
7241         case NL80211_IFTYPE_MESH_POINT:
7242                 /* ignore uAPSD data */
7243                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7244
7245                 /* associated is disallowed */
7246                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7247                         return -EINVAL;
7248                 /* TDLS peers cannot be added */
7249                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7250                     info->attrs[NL80211_ATTR_PEER_AID])
7251                         return -EINVAL;
7252                 break;
7253         case NL80211_IFTYPE_STATION:
7254         case NL80211_IFTYPE_P2P_CLIENT:
7255                 /* ignore uAPSD data */
7256                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7257
7258                 /* these are disallowed */
7259                 if (params.sta_flags_mask &
7260                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7261                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7262                         return -EINVAL;
7263                 /* Only TDLS peers can be added */
7264                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7265                         return -EINVAL;
7266                 /* Can only add if TDLS ... */
7267                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7268                         return -EOPNOTSUPP;
7269                 /* ... with external setup is supported */
7270                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7271                         return -EOPNOTSUPP;
7272                 /*
7273                  * Older wpa_supplicant versions always mark the TDLS peer
7274                  * as authorized, but it shouldn't yet be.
7275                  */
7276                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7277                 break;
7278         default:
7279                 return -EOPNOTSUPP;
7280         }
7281
7282         /* be aware of params.vlan when changing code here */
7283
7284         wdev_lock(dev->ieee80211_ptr);
7285         if (wdev->valid_links) {
7286                 if (params.link_sta_params.link_id < 0) {
7287                         err = -EINVAL;
7288                         goto out;
7289                 }
7290                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7291                         err = -ENOLINK;
7292                         goto out;
7293                 }
7294         } else {
7295                 if (params.link_sta_params.link_id >= 0) {
7296                         err = -EINVAL;
7297                         goto out;
7298                 }
7299         }
7300         err = rdev_add_station(rdev, dev, mac_addr, &params);
7301 out:
7302         wdev_unlock(dev->ieee80211_ptr);
7303         dev_put(params.vlan);
7304         return err;
7305 }
7306
7307 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7308 {
7309         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7310         struct net_device *dev = info->user_ptr[1];
7311         struct station_del_parameters params;
7312         int ret;
7313
7314         memset(&params, 0, sizeof(params));
7315
7316         if (info->attrs[NL80211_ATTR_MAC])
7317                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7318
7319         switch (dev->ieee80211_ptr->iftype) {
7320         case NL80211_IFTYPE_AP:
7321         case NL80211_IFTYPE_AP_VLAN:
7322         case NL80211_IFTYPE_MESH_POINT:
7323         case NL80211_IFTYPE_P2P_GO:
7324                 /* always accept these */
7325                 break;
7326         case NL80211_IFTYPE_ADHOC:
7327                 /* conditionally accept */
7328                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7329                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7330                         break;
7331                 return -EINVAL;
7332         default:
7333                 return -EINVAL;
7334         }
7335
7336         if (!rdev->ops->del_station)
7337                 return -EOPNOTSUPP;
7338
7339         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7340                 params.subtype =
7341                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7342                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7343                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7344                         return -EINVAL;
7345         } else {
7346                 /* Default to Deauthentication frame */
7347                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7348         }
7349
7350         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7351                 params.reason_code =
7352                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7353                 if (params.reason_code == 0)
7354                         return -EINVAL; /* 0 is reserved */
7355         } else {
7356                 /* Default to reason code 2 */
7357                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7358         }
7359
7360         wdev_lock(dev->ieee80211_ptr);
7361         ret = rdev_del_station(rdev, dev, &params);
7362         wdev_unlock(dev->ieee80211_ptr);
7363
7364         return ret;
7365 }
7366
7367 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7368                                 int flags, struct net_device *dev,
7369                                 u8 *dst, u8 *next_hop,
7370                                 struct mpath_info *pinfo)
7371 {
7372         void *hdr;
7373         struct nlattr *pinfoattr;
7374
7375         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7376         if (!hdr)
7377                 return -1;
7378
7379         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7380             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7381             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7382             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7383                 goto nla_put_failure;
7384
7385         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7386         if (!pinfoattr)
7387                 goto nla_put_failure;
7388         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7389             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7390                         pinfo->frame_qlen))
7391                 goto nla_put_failure;
7392         if (((pinfo->filled & MPATH_INFO_SN) &&
7393              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7394             ((pinfo->filled & MPATH_INFO_METRIC) &&
7395              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7396                          pinfo->metric)) ||
7397             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7398              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7399                          pinfo->exptime)) ||
7400             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7401              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7402                         pinfo->flags)) ||
7403             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7404              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7405                          pinfo->discovery_timeout)) ||
7406             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7407              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7408                         pinfo->discovery_retries)) ||
7409             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7410              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7411                         pinfo->hop_count)) ||
7412             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7413              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7414                          pinfo->path_change_count)))
7415                 goto nla_put_failure;
7416
7417         nla_nest_end(msg, pinfoattr);
7418
7419         genlmsg_end(msg, hdr);
7420         return 0;
7421
7422  nla_put_failure:
7423         genlmsg_cancel(msg, hdr);
7424         return -EMSGSIZE;
7425 }
7426
7427 static int nl80211_dump_mpath(struct sk_buff *skb,
7428                               struct netlink_callback *cb)
7429 {
7430         struct mpath_info pinfo;
7431         struct cfg80211_registered_device *rdev;
7432         struct wireless_dev *wdev;
7433         u8 dst[ETH_ALEN];
7434         u8 next_hop[ETH_ALEN];
7435         int path_idx = cb->args[2];
7436         int err;
7437
7438         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7439         if (err)
7440                 return err;
7441         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7442         __acquire(&rdev->wiphy.mtx);
7443
7444         if (!rdev->ops->dump_mpath) {
7445                 err = -EOPNOTSUPP;
7446                 goto out_err;
7447         }
7448
7449         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7450                 err = -EOPNOTSUPP;
7451                 goto out_err;
7452         }
7453
7454         while (1) {
7455                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7456                                       next_hop, &pinfo);
7457                 if (err == -ENOENT)
7458                         break;
7459                 if (err)
7460                         goto out_err;
7461
7462                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7463                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7464                                        wdev->netdev, dst, next_hop,
7465                                        &pinfo) < 0)
7466                         goto out;
7467
7468                 path_idx++;
7469         }
7470
7471  out:
7472         cb->args[2] = path_idx;
7473         err = skb->len;
7474  out_err:
7475         wiphy_unlock(&rdev->wiphy);
7476         return err;
7477 }
7478
7479 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7480 {
7481         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7482         int err;
7483         struct net_device *dev = info->user_ptr[1];
7484         struct mpath_info pinfo;
7485         struct sk_buff *msg;
7486         u8 *dst = NULL;
7487         u8 next_hop[ETH_ALEN];
7488
7489         memset(&pinfo, 0, sizeof(pinfo));
7490
7491         if (!info->attrs[NL80211_ATTR_MAC])
7492                 return -EINVAL;
7493
7494         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7495
7496         if (!rdev->ops->get_mpath)
7497                 return -EOPNOTSUPP;
7498
7499         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7500                 return -EOPNOTSUPP;
7501
7502         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7503         if (err)
7504                 return err;
7505
7506         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7507         if (!msg)
7508                 return -ENOMEM;
7509
7510         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7511                                  dev, dst, next_hop, &pinfo) < 0) {
7512                 nlmsg_free(msg);
7513                 return -ENOBUFS;
7514         }
7515
7516         return genlmsg_reply(msg, info);
7517 }
7518
7519 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7520 {
7521         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7522         struct net_device *dev = info->user_ptr[1];
7523         u8 *dst = NULL;
7524         u8 *next_hop = NULL;
7525
7526         if (!info->attrs[NL80211_ATTR_MAC])
7527                 return -EINVAL;
7528
7529         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7530                 return -EINVAL;
7531
7532         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7533         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7534
7535         if (!rdev->ops->change_mpath)
7536                 return -EOPNOTSUPP;
7537
7538         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7539                 return -EOPNOTSUPP;
7540
7541         return rdev_change_mpath(rdev, dev, dst, next_hop);
7542 }
7543
7544 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7545 {
7546         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7547         struct net_device *dev = info->user_ptr[1];
7548         u8 *dst = NULL;
7549         u8 *next_hop = NULL;
7550
7551         if (!info->attrs[NL80211_ATTR_MAC])
7552                 return -EINVAL;
7553
7554         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7555                 return -EINVAL;
7556
7557         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7558         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7559
7560         if (!rdev->ops->add_mpath)
7561                 return -EOPNOTSUPP;
7562
7563         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7564                 return -EOPNOTSUPP;
7565
7566         return rdev_add_mpath(rdev, dev, dst, next_hop);
7567 }
7568
7569 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7570 {
7571         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7572         struct net_device *dev = info->user_ptr[1];
7573         u8 *dst = NULL;
7574
7575         if (info->attrs[NL80211_ATTR_MAC])
7576                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7577
7578         if (!rdev->ops->del_mpath)
7579                 return -EOPNOTSUPP;
7580
7581         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7582                 return -EOPNOTSUPP;
7583
7584         return rdev_del_mpath(rdev, dev, dst);
7585 }
7586
7587 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7588 {
7589         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7590         int err;
7591         struct net_device *dev = info->user_ptr[1];
7592         struct mpath_info pinfo;
7593         struct sk_buff *msg;
7594         u8 *dst = NULL;
7595         u8 mpp[ETH_ALEN];
7596
7597         memset(&pinfo, 0, sizeof(pinfo));
7598
7599         if (!info->attrs[NL80211_ATTR_MAC])
7600                 return -EINVAL;
7601
7602         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7603
7604         if (!rdev->ops->get_mpp)
7605                 return -EOPNOTSUPP;
7606
7607         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7608                 return -EOPNOTSUPP;
7609
7610         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7611         if (err)
7612                 return err;
7613
7614         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7615         if (!msg)
7616                 return -ENOMEM;
7617
7618         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7619                                dev, dst, mpp, &pinfo) < 0) {
7620                 nlmsg_free(msg);
7621                 return -ENOBUFS;
7622         }
7623
7624         return genlmsg_reply(msg, info);
7625 }
7626
7627 static int nl80211_dump_mpp(struct sk_buff *skb,
7628                             struct netlink_callback *cb)
7629 {
7630         struct mpath_info pinfo;
7631         struct cfg80211_registered_device *rdev;
7632         struct wireless_dev *wdev;
7633         u8 dst[ETH_ALEN];
7634         u8 mpp[ETH_ALEN];
7635         int path_idx = cb->args[2];
7636         int err;
7637
7638         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7639         if (err)
7640                 return err;
7641         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7642         __acquire(&rdev->wiphy.mtx);
7643
7644         if (!rdev->ops->dump_mpp) {
7645                 err = -EOPNOTSUPP;
7646                 goto out_err;
7647         }
7648
7649         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7650                 err = -EOPNOTSUPP;
7651                 goto out_err;
7652         }
7653
7654         while (1) {
7655                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7656                                     mpp, &pinfo);
7657                 if (err == -ENOENT)
7658                         break;
7659                 if (err)
7660                         goto out_err;
7661
7662                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7663                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7664                                        wdev->netdev, dst, mpp,
7665                                        &pinfo) < 0)
7666                         goto out;
7667
7668                 path_idx++;
7669         }
7670
7671  out:
7672         cb->args[2] = path_idx;
7673         err = skb->len;
7674  out_err:
7675         wiphy_unlock(&rdev->wiphy);
7676         return err;
7677 }
7678
7679 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7680 {
7681         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7682         struct net_device *dev = info->user_ptr[1];
7683         struct wireless_dev *wdev = dev->ieee80211_ptr;
7684         struct bss_parameters params;
7685         int err;
7686
7687         memset(&params, 0, sizeof(params));
7688         /* default to not changing parameters */
7689         params.use_cts_prot = -1;
7690         params.use_short_preamble = -1;
7691         params.use_short_slot_time = -1;
7692         params.ap_isolate = -1;
7693         params.ht_opmode = -1;
7694         params.p2p_ctwindow = -1;
7695         params.p2p_opp_ps = -1;
7696
7697         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7698                 params.use_cts_prot =
7699                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7700         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7701                 params.use_short_preamble =
7702                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7703         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7704                 params.use_short_slot_time =
7705                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7706         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7707                 params.basic_rates =
7708                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7709                 params.basic_rates_len =
7710                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7711         }
7712         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7713                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7714         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7715                 params.ht_opmode =
7716                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7717
7718         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7719                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7720                         return -EINVAL;
7721                 params.p2p_ctwindow =
7722                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7723                 if (params.p2p_ctwindow != 0 &&
7724                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7725                         return -EINVAL;
7726         }
7727
7728         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7729                 u8 tmp;
7730
7731                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7732                         return -EINVAL;
7733                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7734                 params.p2p_opp_ps = tmp;
7735                 if (params.p2p_opp_ps &&
7736                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7737                         return -EINVAL;
7738         }
7739
7740         if (!rdev->ops->change_bss)
7741                 return -EOPNOTSUPP;
7742
7743         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7744             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7745                 return -EOPNOTSUPP;
7746
7747         wdev_lock(wdev);
7748         err = rdev_change_bss(rdev, dev, &params);
7749         wdev_unlock(wdev);
7750
7751         return err;
7752 }
7753
7754 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7755 {
7756         char *data = NULL;
7757         bool is_indoor;
7758         enum nl80211_user_reg_hint_type user_reg_hint_type;
7759         u32 owner_nlportid;
7760
7761         /*
7762          * You should only get this when cfg80211 hasn't yet initialized
7763          * completely when built-in to the kernel right between the time
7764          * window between nl80211_init() and regulatory_init(), if that is
7765          * even possible.
7766          */
7767         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7768                 return -EINPROGRESS;
7769
7770         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7771                 user_reg_hint_type =
7772                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7773         else
7774                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7775
7776         switch (user_reg_hint_type) {
7777         case NL80211_USER_REG_HINT_USER:
7778         case NL80211_USER_REG_HINT_CELL_BASE:
7779                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7780                         return -EINVAL;
7781
7782                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7783                 return regulatory_hint_user(data, user_reg_hint_type);
7784         case NL80211_USER_REG_HINT_INDOOR:
7785                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7786                         owner_nlportid = info->snd_portid;
7787                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7788                 } else {
7789                         owner_nlportid = 0;
7790                         is_indoor = true;
7791                 }
7792
7793                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7794         default:
7795                 return -EINVAL;
7796         }
7797 }
7798
7799 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7800 {
7801         return reg_reload_regdb();
7802 }
7803
7804 static int nl80211_get_mesh_config(struct sk_buff *skb,
7805                                    struct genl_info *info)
7806 {
7807         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7808         struct net_device *dev = info->user_ptr[1];
7809         struct wireless_dev *wdev = dev->ieee80211_ptr;
7810         struct mesh_config cur_params;
7811         int err = 0;
7812         void *hdr;
7813         struct nlattr *pinfoattr;
7814         struct sk_buff *msg;
7815
7816         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7817                 return -EOPNOTSUPP;
7818
7819         if (!rdev->ops->get_mesh_config)
7820                 return -EOPNOTSUPP;
7821
7822         wdev_lock(wdev);
7823         /* If not connected, get default parameters */
7824         if (!wdev->u.mesh.id_len)
7825                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7826         else
7827                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7828         wdev_unlock(wdev);
7829
7830         if (err)
7831                 return err;
7832
7833         /* Draw up a netlink message to send back */
7834         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7835         if (!msg)
7836                 return -ENOMEM;
7837         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7838                              NL80211_CMD_GET_MESH_CONFIG);
7839         if (!hdr)
7840                 goto out;
7841         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7842         if (!pinfoattr)
7843                 goto nla_put_failure;
7844         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7845             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7846                         cur_params.dot11MeshRetryTimeout) ||
7847             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7848                         cur_params.dot11MeshConfirmTimeout) ||
7849             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7850                         cur_params.dot11MeshHoldingTimeout) ||
7851             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7852                         cur_params.dot11MeshMaxPeerLinks) ||
7853             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7854                        cur_params.dot11MeshMaxRetries) ||
7855             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7856                        cur_params.dot11MeshTTL) ||
7857             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7858                        cur_params.element_ttl) ||
7859             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7860                        cur_params.auto_open_plinks) ||
7861             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7862                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7863             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7864                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7865             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7866                         cur_params.path_refresh_time) ||
7867             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7868                         cur_params.min_discovery_timeout) ||
7869             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7870                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7871             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7872                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7873             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7874                         cur_params.dot11MeshHWMPperrMinInterval) ||
7875             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7876                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7877             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7878                        cur_params.dot11MeshHWMPRootMode) ||
7879             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7880                         cur_params.dot11MeshHWMPRannInterval) ||
7881             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7882                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7883             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7884                        cur_params.dot11MeshForwarding) ||
7885             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7886                         cur_params.rssi_threshold) ||
7887             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7888                         cur_params.ht_opmode) ||
7889             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7890                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7891             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7892                         cur_params.dot11MeshHWMProotInterval) ||
7893             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7894                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7895             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7896                         cur_params.power_mode) ||
7897             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7898                         cur_params.dot11MeshAwakeWindowDuration) ||
7899             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7900                         cur_params.plink_timeout) ||
7901             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7902                        cur_params.dot11MeshConnectedToMeshGate) ||
7903             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7904                        cur_params.dot11MeshNolearn) ||
7905             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7906                        cur_params.dot11MeshConnectedToAuthServer))
7907                 goto nla_put_failure;
7908         nla_nest_end(msg, pinfoattr);
7909         genlmsg_end(msg, hdr);
7910         return genlmsg_reply(msg, info);
7911
7912  nla_put_failure:
7913  out:
7914         nlmsg_free(msg);
7915         return -ENOBUFS;
7916 }
7917
7918 static const struct nla_policy
7919 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7920         [NL80211_MESHCONF_RETRY_TIMEOUT] =
7921                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7922         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7923                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7924         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7925                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7926         [NL80211_MESHCONF_MAX_PEER_LINKS] =
7927                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7928         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7929         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7930         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7931         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7932         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7933                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7934         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7935         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7936         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7937         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7938         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7939                 NLA_POLICY_MIN(NLA_U16, 1),
7940         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7941                 NLA_POLICY_MIN(NLA_U16, 1),
7942         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7943                 NLA_POLICY_MIN(NLA_U16, 1),
7944         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7945         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7946                 NLA_POLICY_MIN(NLA_U16, 1),
7947         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7948         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7949         [NL80211_MESHCONF_RSSI_THRESHOLD] =
7950                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7951         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7952         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7953         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7954                 NLA_POLICY_MIN(NLA_U16, 1),
7955         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7956                 NLA_POLICY_MIN(NLA_U16, 1),
7957         [NL80211_MESHCONF_POWER_MODE] =
7958                 NLA_POLICY_RANGE(NLA_U32,
7959                                  NL80211_MESH_POWER_ACTIVE,
7960                                  NL80211_MESH_POWER_MAX),
7961         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7962         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7963         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7964         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7965         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7966 };
7967
7968 static const struct nla_policy
7969         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7970         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7971         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7972         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7973         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7974         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7975         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7976         [NL80211_MESH_SETUP_IE] =
7977                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7978                                        IEEE80211_MAX_DATA_LEN),
7979         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7980 };
7981
7982 static int nl80211_parse_mesh_config(struct genl_info *info,
7983                                      struct mesh_config *cfg,
7984                                      u32 *mask_out)
7985 {
7986         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7987         u32 mask = 0;
7988         u16 ht_opmode;
7989
7990 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
7991 do {                                                                    \
7992         if (tb[attr]) {                                                 \
7993                 cfg->param = fn(tb[attr]);                              \
7994                 mask |= BIT((attr) - 1);                                \
7995         }                                                               \
7996 } while (0)
7997
7998         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7999                 return -EINVAL;
8000         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8001                 return -EINVAL;
8002
8003         /* This makes sure that there aren't more than 32 mesh config
8004          * parameters (otherwise our bitfield scheme would not work.) */
8005         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8006
8007         /* Fill in the params struct */
8008         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8009                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8010         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8011                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8012                                   nla_get_u16);
8013         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8014                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8015                                   nla_get_u16);
8016         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8017                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8018                                   nla_get_u16);
8019         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8020                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8021         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8022                                   NL80211_MESHCONF_TTL, nla_get_u8);
8023         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8024                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8025         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8026                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8027                                   nla_get_u8);
8028         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8029                                   mask,
8030                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8031                                   nla_get_u32);
8032         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8033                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8034                                   nla_get_u8);
8035         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8036                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8037                                   nla_get_u32);
8038         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8039             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8040                 return -EINVAL;
8041         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8042                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8043                                   nla_get_u16);
8044         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8045                                   mask,
8046                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8047                                   nla_get_u32);
8048         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8049             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8050              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8051                 return -EINVAL;
8052         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8053                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8054                                   nla_get_u16);
8055         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8056                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8057                                   nla_get_u16);
8058         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8059                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8060                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8061                                   nla_get_u16);
8062         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8063                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8064         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8065                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8066                                   nla_get_u16);
8067         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8068                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8069                                   nla_get_u8);
8070         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8071                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8072         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8073                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8074                                   nla_get_s32);
8075         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8076                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8077                                   nla_get_u8);
8078         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8079                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8080                                   nla_get_u8);
8081         /*
8082          * Check HT operation mode based on
8083          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8084          */
8085         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8086                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8087
8088                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8089                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8090                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8091                         return -EINVAL;
8092
8093                 /* NON_HT_STA bit is reserved, but some programs set it */
8094                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8095
8096                 cfg->ht_opmode = ht_opmode;
8097                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8098         }
8099         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8100                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8101                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8102                                   nla_get_u32);
8103         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8104             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8105              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8106                 return -EINVAL;
8107         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8108                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8109                                   nla_get_u16);
8110         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8111                                   mask,
8112                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8113                                   nla_get_u16);
8114         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8115                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8116         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8117                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8118         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8119                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8120         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8121                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8122         if (mask_out)
8123                 *mask_out = mask;
8124
8125         return 0;
8126
8127 #undef FILL_IN_MESH_PARAM_IF_SET
8128 }
8129
8130 static int nl80211_parse_mesh_setup(struct genl_info *info,
8131                                      struct mesh_setup *setup)
8132 {
8133         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8134         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8135
8136         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8137                 return -EINVAL;
8138         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8139                 return -EINVAL;
8140
8141         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8142                 setup->sync_method =
8143                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8144                  IEEE80211_SYNC_METHOD_VENDOR :
8145                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8146
8147         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8148                 setup->path_sel_proto =
8149                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8150                  IEEE80211_PATH_PROTOCOL_VENDOR :
8151                  IEEE80211_PATH_PROTOCOL_HWMP;
8152
8153         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8154                 setup->path_metric =
8155                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8156                  IEEE80211_PATH_METRIC_VENDOR :
8157                  IEEE80211_PATH_METRIC_AIRTIME;
8158
8159         if (tb[NL80211_MESH_SETUP_IE]) {
8160                 struct nlattr *ieattr =
8161                         tb[NL80211_MESH_SETUP_IE];
8162                 setup->ie = nla_data(ieattr);
8163                 setup->ie_len = nla_len(ieattr);
8164         }
8165         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8166             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8167                 return -EINVAL;
8168         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8169         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8170         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8171         if (setup->is_secure)
8172                 setup->user_mpm = true;
8173
8174         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8175                 if (!setup->user_mpm)
8176                         return -EINVAL;
8177                 setup->auth_id =
8178                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8179         }
8180
8181         return 0;
8182 }
8183
8184 static int nl80211_update_mesh_config(struct sk_buff *skb,
8185                                       struct genl_info *info)
8186 {
8187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8188         struct net_device *dev = info->user_ptr[1];
8189         struct wireless_dev *wdev = dev->ieee80211_ptr;
8190         struct mesh_config cfg;
8191         u32 mask;
8192         int err;
8193
8194         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8195                 return -EOPNOTSUPP;
8196
8197         if (!rdev->ops->update_mesh_config)
8198                 return -EOPNOTSUPP;
8199
8200         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8201         if (err)
8202                 return err;
8203
8204         wdev_lock(wdev);
8205         if (!wdev->u.mesh.id_len)
8206                 err = -ENOLINK;
8207
8208         if (!err)
8209                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8210
8211         wdev_unlock(wdev);
8212
8213         return err;
8214 }
8215
8216 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8217                               struct sk_buff *msg)
8218 {
8219         struct nlattr *nl_reg_rules;
8220         unsigned int i;
8221
8222         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8223             (regdom->dfs_region &&
8224              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8225                 goto nla_put_failure;
8226
8227         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8228         if (!nl_reg_rules)
8229                 goto nla_put_failure;
8230
8231         for (i = 0; i < regdom->n_reg_rules; i++) {
8232                 struct nlattr *nl_reg_rule;
8233                 const struct ieee80211_reg_rule *reg_rule;
8234                 const struct ieee80211_freq_range *freq_range;
8235                 const struct ieee80211_power_rule *power_rule;
8236                 unsigned int max_bandwidth_khz;
8237
8238                 reg_rule = &regdom->reg_rules[i];
8239                 freq_range = &reg_rule->freq_range;
8240                 power_rule = &reg_rule->power_rule;
8241
8242                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8243                 if (!nl_reg_rule)
8244                         goto nla_put_failure;
8245
8246                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8247                 if (!max_bandwidth_khz)
8248                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8249                                                                   reg_rule);
8250
8251                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8252                                 reg_rule->flags) ||
8253                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8254                                 freq_range->start_freq_khz) ||
8255                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8256                                 freq_range->end_freq_khz) ||
8257                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8258                                 max_bandwidth_khz) ||
8259                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8260                                 power_rule->max_antenna_gain) ||
8261                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8262                                 power_rule->max_eirp) ||
8263                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8264                                 reg_rule->dfs_cac_ms))
8265                         goto nla_put_failure;
8266
8267                 nla_nest_end(msg, nl_reg_rule);
8268         }
8269
8270         nla_nest_end(msg, nl_reg_rules);
8271         return 0;
8272
8273 nla_put_failure:
8274         return -EMSGSIZE;
8275 }
8276
8277 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8278 {
8279         const struct ieee80211_regdomain *regdom = NULL;
8280         struct cfg80211_registered_device *rdev;
8281         struct wiphy *wiphy = NULL;
8282         struct sk_buff *msg;
8283         int err = -EMSGSIZE;
8284         void *hdr;
8285
8286         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8287         if (!msg)
8288                 return -ENOBUFS;
8289
8290         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8291                              NL80211_CMD_GET_REG);
8292         if (!hdr)
8293                 goto put_failure;
8294
8295         rtnl_lock();
8296
8297         if (info->attrs[NL80211_ATTR_WIPHY]) {
8298                 bool self_managed;
8299
8300                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8301                 if (IS_ERR(rdev)) {
8302                         err = PTR_ERR(rdev);
8303                         goto nla_put_failure;
8304                 }
8305
8306                 wiphy = &rdev->wiphy;
8307                 self_managed = wiphy->regulatory_flags &
8308                                REGULATORY_WIPHY_SELF_MANAGED;
8309
8310                 rcu_read_lock();
8311
8312                 regdom = get_wiphy_regdom(wiphy);
8313
8314                 /* a self-managed-reg device must have a private regdom */
8315                 if (WARN_ON(!regdom && self_managed)) {
8316                         err = -EINVAL;
8317                         goto nla_put_failure_rcu;
8318                 }
8319
8320                 if (regdom &&
8321                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8322                         goto nla_put_failure_rcu;
8323         } else {
8324                 rcu_read_lock();
8325         }
8326
8327         if (!wiphy && reg_last_request_cell_base() &&
8328             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8329                         NL80211_USER_REG_HINT_CELL_BASE))
8330                 goto nla_put_failure_rcu;
8331
8332         if (!regdom)
8333                 regdom = rcu_dereference(cfg80211_regdomain);
8334
8335         if (nl80211_put_regdom(regdom, msg))
8336                 goto nla_put_failure_rcu;
8337
8338         rcu_read_unlock();
8339
8340         genlmsg_end(msg, hdr);
8341         rtnl_unlock();
8342         return genlmsg_reply(msg, info);
8343
8344 nla_put_failure_rcu:
8345         rcu_read_unlock();
8346 nla_put_failure:
8347         rtnl_unlock();
8348 put_failure:
8349         nlmsg_free(msg);
8350         return err;
8351 }
8352
8353 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8354                                u32 seq, int flags, struct wiphy *wiphy,
8355                                const struct ieee80211_regdomain *regdom)
8356 {
8357         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8358                                    NL80211_CMD_GET_REG);
8359
8360         if (!hdr)
8361                 return -1;
8362
8363         genl_dump_check_consistent(cb, hdr);
8364
8365         if (nl80211_put_regdom(regdom, msg))
8366                 goto nla_put_failure;
8367
8368         if (!wiphy && reg_last_request_cell_base() &&
8369             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8370                         NL80211_USER_REG_HINT_CELL_BASE))
8371                 goto nla_put_failure;
8372
8373         if (wiphy &&
8374             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8375                 goto nla_put_failure;
8376
8377         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8378             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8379                 goto nla_put_failure;
8380
8381         genlmsg_end(msg, hdr);
8382         return 0;
8383
8384 nla_put_failure:
8385         genlmsg_cancel(msg, hdr);
8386         return -EMSGSIZE;
8387 }
8388
8389 static int nl80211_get_reg_dump(struct sk_buff *skb,
8390                                 struct netlink_callback *cb)
8391 {
8392         const struct ieee80211_regdomain *regdom = NULL;
8393         struct cfg80211_registered_device *rdev;
8394         int err, reg_idx, start = cb->args[2];
8395
8396         rcu_read_lock();
8397
8398         if (cfg80211_regdomain && start == 0) {
8399                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8400                                           NLM_F_MULTI, NULL,
8401                                           rcu_dereference(cfg80211_regdomain));
8402                 if (err < 0)
8403                         goto out_err;
8404         }
8405
8406         /* the global regdom is idx 0 */
8407         reg_idx = 1;
8408         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8409                 regdom = get_wiphy_regdom(&rdev->wiphy);
8410                 if (!regdom)
8411                         continue;
8412
8413                 if (++reg_idx <= start)
8414                         continue;
8415
8416                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8417                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8418                 if (err < 0) {
8419                         reg_idx--;
8420                         break;
8421                 }
8422         }
8423
8424         cb->args[2] = reg_idx;
8425         err = skb->len;
8426 out_err:
8427         rcu_read_unlock();
8428         return err;
8429 }
8430
8431 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8432 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8433         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8434         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8435         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8436         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8437         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8438         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8439         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8440 };
8441
8442 static int parse_reg_rule(struct nlattr *tb[],
8443         struct ieee80211_reg_rule *reg_rule)
8444 {
8445         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8446         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8447
8448         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8449                 return -EINVAL;
8450         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8451                 return -EINVAL;
8452         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8453                 return -EINVAL;
8454         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8455                 return -EINVAL;
8456         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8457                 return -EINVAL;
8458
8459         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8460
8461         freq_range->start_freq_khz =
8462                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8463         freq_range->end_freq_khz =
8464                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8465         freq_range->max_bandwidth_khz =
8466                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8467
8468         power_rule->max_eirp =
8469                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8470
8471         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8472                 power_rule->max_antenna_gain =
8473                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8474
8475         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8476                 reg_rule->dfs_cac_ms =
8477                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8478
8479         return 0;
8480 }
8481
8482 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8483 {
8484         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8485         struct nlattr *nl_reg_rule;
8486         char *alpha2;
8487         int rem_reg_rules, r;
8488         u32 num_rules = 0, rule_idx = 0;
8489         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8490         struct ieee80211_regdomain *rd;
8491
8492         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8493                 return -EINVAL;
8494
8495         if (!info->attrs[NL80211_ATTR_REG_RULES])
8496                 return -EINVAL;
8497
8498         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8499
8500         if (info->attrs[NL80211_ATTR_DFS_REGION])
8501                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8502
8503         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8504                             rem_reg_rules) {
8505                 num_rules++;
8506                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8507                         return -EINVAL;
8508         }
8509
8510         rtnl_lock();
8511         if (!reg_is_valid_request(alpha2)) {
8512                 r = -EINVAL;
8513                 goto out;
8514         }
8515
8516         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8517         if (!rd) {
8518                 r = -ENOMEM;
8519                 goto out;
8520         }
8521
8522         rd->n_reg_rules = num_rules;
8523         rd->alpha2[0] = alpha2[0];
8524         rd->alpha2[1] = alpha2[1];
8525
8526         /*
8527          * Disable DFS master mode if the DFS region was
8528          * not supported or known on this kernel.
8529          */
8530         if (reg_supported_dfs_region(dfs_region))
8531                 rd->dfs_region = dfs_region;
8532
8533         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8534                             rem_reg_rules) {
8535                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8536                                                 nl_reg_rule, reg_rule_policy,
8537                                                 info->extack);
8538                 if (r)
8539                         goto bad_reg;
8540                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8541                 if (r)
8542                         goto bad_reg;
8543
8544                 rule_idx++;
8545
8546                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8547                         r = -EINVAL;
8548                         goto bad_reg;
8549                 }
8550         }
8551
8552         r = set_regdom(rd, REGD_SOURCE_CRDA);
8553         /* set_regdom takes ownership of rd */
8554         rd = NULL;
8555  bad_reg:
8556         kfree(rd);
8557  out:
8558         rtnl_unlock();
8559         return r;
8560 }
8561 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8562
8563 static int validate_scan_freqs(struct nlattr *freqs)
8564 {
8565         struct nlattr *attr1, *attr2;
8566         int n_channels = 0, tmp1, tmp2;
8567
8568         nla_for_each_nested(attr1, freqs, tmp1)
8569                 if (nla_len(attr1) != sizeof(u32))
8570                         return 0;
8571
8572         nla_for_each_nested(attr1, freqs, tmp1) {
8573                 n_channels++;
8574                 /*
8575                  * Some hardware has a limited channel list for
8576                  * scanning, and it is pretty much nonsensical
8577                  * to scan for a channel twice, so disallow that
8578                  * and don't require drivers to check that the
8579                  * channel list they get isn't longer than what
8580                  * they can scan, as long as they can scan all
8581                  * the channels they registered at once.
8582                  */
8583                 nla_for_each_nested(attr2, freqs, tmp2)
8584                         if (attr1 != attr2 &&
8585                             nla_get_u32(attr1) == nla_get_u32(attr2))
8586                                 return 0;
8587         }
8588
8589         return n_channels;
8590 }
8591
8592 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8593 {
8594         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8595 }
8596
8597 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8598                             struct cfg80211_bss_selection *bss_select)
8599 {
8600         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8601         struct nlattr *nest;
8602         int err;
8603         bool found = false;
8604         int i;
8605
8606         /* only process one nested attribute */
8607         nest = nla_data(nla);
8608         if (!nla_ok(nest, nla_len(nest)))
8609                 return -EINVAL;
8610
8611         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8612                                           nest, nl80211_bss_select_policy,
8613                                           NULL);
8614         if (err)
8615                 return err;
8616
8617         /* only one attribute may be given */
8618         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8619                 if (attr[i]) {
8620                         if (found)
8621                                 return -EINVAL;
8622                         found = true;
8623                 }
8624         }
8625
8626         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8627
8628         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8629                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8630
8631         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8632                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8633                 bss_select->param.band_pref =
8634                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8635                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8636                         return -EINVAL;
8637         }
8638
8639         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8640                 struct nl80211_bss_select_rssi_adjust *adj_param;
8641
8642                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8643                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8644                 bss_select->param.adjust.band = adj_param->band;
8645                 bss_select->param.adjust.delta = adj_param->delta;
8646                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8647                         return -EINVAL;
8648         }
8649
8650         /* user-space did not provide behaviour attribute */
8651         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8652                 return -EINVAL;
8653
8654         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8655                 return -EINVAL;
8656
8657         return 0;
8658 }
8659
8660 int nl80211_parse_random_mac(struct nlattr **attrs,
8661                              u8 *mac_addr, u8 *mac_addr_mask)
8662 {
8663         int i;
8664
8665         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8666                 eth_zero_addr(mac_addr);
8667                 eth_zero_addr(mac_addr_mask);
8668                 mac_addr[0] = 0x2;
8669                 mac_addr_mask[0] = 0x3;
8670
8671                 return 0;
8672         }
8673
8674         /* need both or none */
8675         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8676                 return -EINVAL;
8677
8678         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8679         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8680
8681         /* don't allow or configure an mcast address */
8682         if (!is_multicast_ether_addr(mac_addr_mask) ||
8683             is_multicast_ether_addr(mac_addr))
8684                 return -EINVAL;
8685
8686         /*
8687          * allow users to pass a MAC address that has bits set outside
8688          * of the mask, but don't bother drivers with having to deal
8689          * with such bits
8690          */
8691         for (i = 0; i < ETH_ALEN; i++)
8692                 mac_addr[i] &= mac_addr_mask[i];
8693
8694         return 0;
8695 }
8696
8697 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
8698                                               struct ieee80211_channel *chan)
8699 {
8700         unsigned int link_id;
8701         bool all_ok = true;
8702
8703         ASSERT_WDEV_LOCK(wdev);
8704
8705         if (!cfg80211_beaconing_iface_active(wdev))
8706                 return true;
8707
8708         /*
8709          * FIXME: check if we have a free HW resource/link for chan
8710          *
8711          * This, as well as the FIXME below, requires knowing the link
8712          * capabilities of the hardware.
8713          */
8714
8715         /* we cannot leave radar channels */
8716         for_each_valid_link(wdev, link_id) {
8717                 struct cfg80211_chan_def *chandef;
8718
8719                 chandef = wdev_chandef(wdev, link_id);
8720                 if (!chandef)
8721                         continue;
8722
8723                 /*
8724                  * FIXME: don't require all_ok, but rather check only the
8725                  *        correct HW resource/link onto which 'chan' falls,
8726                  *        as only that link leaves the channel for doing
8727                  *        the off-channel operation.
8728                  */
8729
8730                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
8731                         all_ok = false;
8732         }
8733
8734         if (all_ok)
8735                 return true;
8736
8737         return regulatory_pre_cac_allowed(wdev->wiphy);
8738 }
8739
8740 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8741                                     enum nl80211_ext_feature_index feat)
8742 {
8743         if (!(flags & flag))
8744                 return true;
8745         if (wiphy_ext_feature_isset(wiphy, feat))
8746                 return true;
8747         return false;
8748 }
8749
8750 static int
8751 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8752                          void *request, struct nlattr **attrs,
8753                          bool is_sched_scan)
8754 {
8755         u8 *mac_addr, *mac_addr_mask;
8756         u32 *flags;
8757         enum nl80211_feature_flags randomness_flag;
8758
8759         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8760                 return 0;
8761
8762         if (is_sched_scan) {
8763                 struct cfg80211_sched_scan_request *req = request;
8764
8765                 randomness_flag = wdev ?
8766                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8767                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8768                 flags = &req->flags;
8769                 mac_addr = req->mac_addr;
8770                 mac_addr_mask = req->mac_addr_mask;
8771         } else {
8772                 struct cfg80211_scan_request *req = request;
8773
8774                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8775                 flags = &req->flags;
8776                 mac_addr = req->mac_addr;
8777                 mac_addr_mask = req->mac_addr_mask;
8778         }
8779
8780         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8781
8782         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8783              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8784             !nl80211_check_scan_feat(wiphy, *flags,
8785                                      NL80211_SCAN_FLAG_LOW_SPAN,
8786                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8787             !nl80211_check_scan_feat(wiphy, *flags,
8788                                      NL80211_SCAN_FLAG_LOW_POWER,
8789                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8790             !nl80211_check_scan_feat(wiphy, *flags,
8791                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8792                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8793             !nl80211_check_scan_feat(wiphy, *flags,
8794                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8795                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8796             !nl80211_check_scan_feat(wiphy, *flags,
8797                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8798                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8799             !nl80211_check_scan_feat(wiphy, *flags,
8800                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8801                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8802             !nl80211_check_scan_feat(wiphy, *flags,
8803                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8804                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8805             !nl80211_check_scan_feat(wiphy, *flags,
8806                                      NL80211_SCAN_FLAG_RANDOM_SN,
8807                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8808             !nl80211_check_scan_feat(wiphy, *flags,
8809                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8810                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8811                 return -EOPNOTSUPP;
8812
8813         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8814                 int err;
8815
8816                 if (!(wiphy->features & randomness_flag) ||
8817                     (wdev && wdev->connected))
8818                         return -EOPNOTSUPP;
8819
8820                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8821                 if (err)
8822                         return err;
8823         }
8824
8825         return 0;
8826 }
8827
8828 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8829 {
8830         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8831         struct wireless_dev *wdev = info->user_ptr[1];
8832         struct cfg80211_scan_request *request;
8833         struct nlattr *scan_freqs = NULL;
8834         bool scan_freqs_khz = false;
8835         struct nlattr *attr;
8836         struct wiphy *wiphy;
8837         int err, tmp, n_ssids = 0, n_channels, i;
8838         size_t ie_len;
8839
8840         wiphy = &rdev->wiphy;
8841
8842         if (wdev->iftype == NL80211_IFTYPE_NAN)
8843                 return -EOPNOTSUPP;
8844
8845         if (!rdev->ops->scan)
8846                 return -EOPNOTSUPP;
8847
8848         if (rdev->scan_req || rdev->scan_msg)
8849                 return -EBUSY;
8850
8851         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8852                 if (!wiphy_ext_feature_isset(wiphy,
8853                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8854                         return -EOPNOTSUPP;
8855                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8856                 scan_freqs_khz = true;
8857         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8858                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8859
8860         if (scan_freqs) {
8861                 n_channels = validate_scan_freqs(scan_freqs);
8862                 if (!n_channels)
8863                         return -EINVAL;
8864         } else {
8865                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8866         }
8867
8868         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8869                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8870                         n_ssids++;
8871
8872         if (n_ssids > wiphy->max_scan_ssids)
8873                 return -EINVAL;
8874
8875         if (info->attrs[NL80211_ATTR_IE])
8876                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8877         else
8878                 ie_len = 0;
8879
8880         if (ie_len > wiphy->max_scan_ie_len)
8881                 return -EINVAL;
8882
8883         request = kzalloc(sizeof(*request)
8884                         + sizeof(*request->ssids) * n_ssids
8885                         + sizeof(*request->channels) * n_channels
8886                         + ie_len, GFP_KERNEL);
8887         if (!request)
8888                 return -ENOMEM;
8889
8890         if (n_ssids)
8891                 request->ssids = (void *)&request->channels[n_channels];
8892         request->n_ssids = n_ssids;
8893         if (ie_len) {
8894                 if (n_ssids)
8895                         request->ie = (void *)(request->ssids + n_ssids);
8896                 else
8897                         request->ie = (void *)(request->channels + n_channels);
8898         }
8899
8900         i = 0;
8901         if (scan_freqs) {
8902                 /* user specified, bail out if channel not found */
8903                 nla_for_each_nested(attr, scan_freqs, tmp) {
8904                         struct ieee80211_channel *chan;
8905                         int freq = nla_get_u32(attr);
8906
8907                         if (!scan_freqs_khz)
8908                                 freq = MHZ_TO_KHZ(freq);
8909
8910                         chan = ieee80211_get_channel_khz(wiphy, freq);
8911                         if (!chan) {
8912                                 err = -EINVAL;
8913                                 goto out_free;
8914                         }
8915
8916                         /* ignore disabled channels */
8917                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8918                                 continue;
8919
8920                         request->channels[i] = chan;
8921                         i++;
8922                 }
8923         } else {
8924                 enum nl80211_band band;
8925
8926                 /* all channels */
8927                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8928                         int j;
8929
8930                         if (!wiphy->bands[band])
8931                                 continue;
8932                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8933                                 struct ieee80211_channel *chan;
8934
8935                                 chan = &wiphy->bands[band]->channels[j];
8936
8937                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8938                                         continue;
8939
8940                                 request->channels[i] = chan;
8941                                 i++;
8942                         }
8943                 }
8944         }
8945
8946         if (!i) {
8947                 err = -EINVAL;
8948                 goto out_free;
8949         }
8950
8951         request->n_channels = i;
8952
8953         wdev_lock(wdev);
8954         for (i = 0; i < request->n_channels; i++) {
8955                 struct ieee80211_channel *chan = request->channels[i];
8956
8957                 /* if we can go off-channel to the target channel we're good */
8958                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
8959                         continue;
8960
8961                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
8962                         wdev_unlock(wdev);
8963                         err = -EBUSY;
8964                         goto out_free;
8965                 }
8966         }
8967         wdev_unlock(wdev);
8968
8969         i = 0;
8970         if (n_ssids) {
8971                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8972                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8973                                 err = -EINVAL;
8974                                 goto out_free;
8975                         }
8976                         request->ssids[i].ssid_len = nla_len(attr);
8977                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8978                         i++;
8979                 }
8980         }
8981
8982         if (info->attrs[NL80211_ATTR_IE]) {
8983                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8984                 memcpy((void *)request->ie,
8985                        nla_data(info->attrs[NL80211_ATTR_IE]),
8986                        request->ie_len);
8987         }
8988
8989         for (i = 0; i < NUM_NL80211_BANDS; i++)
8990                 if (wiphy->bands[i])
8991                         request->rates[i] =
8992                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
8993
8994         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8995                 nla_for_each_nested(attr,
8996                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8997                                     tmp) {
8998                         enum nl80211_band band = nla_type(attr);
8999
9000                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9001                                 err = -EINVAL;
9002                                 goto out_free;
9003                         }
9004
9005                         if (!wiphy->bands[band])
9006                                 continue;
9007
9008                         err = ieee80211_get_ratemask(wiphy->bands[band],
9009                                                      nla_data(attr),
9010                                                      nla_len(attr),
9011                                                      &request->rates[band]);
9012                         if (err)
9013                                 goto out_free;
9014                 }
9015         }
9016
9017         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9018                 request->duration =
9019                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9020                 request->duration_mandatory =
9021                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9022         }
9023
9024         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9025                                        false);
9026         if (err)
9027                 goto out_free;
9028
9029         request->no_cck =
9030                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9031
9032         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9033          * BSSID to scan for. This was problematic because that same attribute
9034          * was already used for another purpose (local random MAC address). The
9035          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9036          * compatibility with older userspace components, also use the
9037          * NL80211_ATTR_MAC value here if it can be determined to be used for
9038          * the specific BSSID use case instead of the random MAC address
9039          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9040          */
9041         if (info->attrs[NL80211_ATTR_BSSID])
9042                 memcpy(request->bssid,
9043                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9044         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9045                  info->attrs[NL80211_ATTR_MAC])
9046                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9047                        ETH_ALEN);
9048         else
9049                 eth_broadcast_addr(request->bssid);
9050
9051         request->wdev = wdev;
9052         request->wiphy = &rdev->wiphy;
9053         request->scan_start = jiffies;
9054
9055         rdev->scan_req = request;
9056         err = cfg80211_scan(rdev);
9057
9058         if (err)
9059                 goto out_free;
9060
9061         nl80211_send_scan_start(rdev, wdev);
9062         dev_hold(wdev->netdev);
9063
9064         return 0;
9065
9066  out_free:
9067         rdev->scan_req = NULL;
9068         kfree(request);
9069
9070         return err;
9071 }
9072
9073 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9074 {
9075         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9076         struct wireless_dev *wdev = info->user_ptr[1];
9077
9078         if (!rdev->ops->abort_scan)
9079                 return -EOPNOTSUPP;
9080
9081         if (rdev->scan_msg)
9082                 return 0;
9083
9084         if (!rdev->scan_req)
9085                 return -ENOENT;
9086
9087         rdev_abort_scan(rdev, wdev);
9088         return 0;
9089 }
9090
9091 static int
9092 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9093                                struct cfg80211_sched_scan_request *request,
9094                                struct nlattr **attrs)
9095 {
9096         int tmp, err, i = 0;
9097         struct nlattr *attr;
9098
9099         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9100                 u32 interval;
9101
9102                 /*
9103                  * If scan plans are not specified,
9104                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9105                  * case one scan plan will be set with the specified scan
9106                  * interval and infinite number of iterations.
9107                  */
9108                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9109                 if (!interval)
9110                         return -EINVAL;
9111
9112                 request->scan_plans[0].interval =
9113                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9114                 if (!request->scan_plans[0].interval)
9115                         return -EINVAL;
9116
9117                 if (request->scan_plans[0].interval >
9118                     wiphy->max_sched_scan_plan_interval)
9119                         request->scan_plans[0].interval =
9120                                 wiphy->max_sched_scan_plan_interval;
9121
9122                 return 0;
9123         }
9124
9125         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9126                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9127
9128                 if (WARN_ON(i >= n_plans))
9129                         return -EINVAL;
9130
9131                 err = nla_parse_nested_deprecated(plan,
9132                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9133                                                   attr, nl80211_plan_policy,
9134                                                   NULL);
9135                 if (err)
9136                         return err;
9137
9138                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9139                         return -EINVAL;
9140
9141                 request->scan_plans[i].interval =
9142                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9143                 if (!request->scan_plans[i].interval ||
9144                     request->scan_plans[i].interval >
9145                     wiphy->max_sched_scan_plan_interval)
9146                         return -EINVAL;
9147
9148                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9149                         request->scan_plans[i].iterations =
9150                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9151                         if (!request->scan_plans[i].iterations ||
9152                             (request->scan_plans[i].iterations >
9153                              wiphy->max_sched_scan_plan_iterations))
9154                                 return -EINVAL;
9155                 } else if (i < n_plans - 1) {
9156                         /*
9157                          * All scan plans but the last one must specify
9158                          * a finite number of iterations
9159                          */
9160                         return -EINVAL;
9161                 }
9162
9163                 i++;
9164         }
9165
9166         /*
9167          * The last scan plan must not specify the number of
9168          * iterations, it is supposed to run infinitely
9169          */
9170         if (request->scan_plans[n_plans - 1].iterations)
9171                 return  -EINVAL;
9172
9173         return 0;
9174 }
9175
9176 static int
9177 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9178                                        struct cfg80211_match_set *match_sets,
9179                                        struct nlattr *tb_band_rssi,
9180                                        s32 rssi_thold)
9181 {
9182         struct nlattr *attr;
9183         int i, tmp, ret = 0;
9184
9185         if (!wiphy_ext_feature_isset(wiphy,
9186                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9187                 if (tb_band_rssi)
9188                         ret = -EOPNOTSUPP;
9189                 else
9190                         for (i = 0; i < NUM_NL80211_BANDS; i++)
9191                                 match_sets->per_band_rssi_thold[i] =
9192                                         NL80211_SCAN_RSSI_THOLD_OFF;
9193                 return ret;
9194         }
9195
9196         for (i = 0; i < NUM_NL80211_BANDS; i++)
9197                 match_sets->per_band_rssi_thold[i] = rssi_thold;
9198
9199         nla_for_each_nested(attr, tb_band_rssi, tmp) {
9200                 enum nl80211_band band = nla_type(attr);
9201
9202                 if (band < 0 || band >= NUM_NL80211_BANDS)
9203                         return -EINVAL;
9204
9205                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9206         }
9207
9208         return 0;
9209 }
9210
9211 static struct cfg80211_sched_scan_request *
9212 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9213                          struct nlattr **attrs, int max_match_sets)
9214 {
9215         struct cfg80211_sched_scan_request *request;
9216         struct nlattr *attr;
9217         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9218         enum nl80211_band band;
9219         size_t ie_len;
9220         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9221         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9222
9223         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9224                 n_channels = validate_scan_freqs(
9225                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9226                 if (!n_channels)
9227                         return ERR_PTR(-EINVAL);
9228         } else {
9229                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9230         }
9231
9232         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9233                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9234                                     tmp)
9235                         n_ssids++;
9236
9237         if (n_ssids > wiphy->max_sched_scan_ssids)
9238                 return ERR_PTR(-EINVAL);
9239
9240         /*
9241          * First, count the number of 'real' matchsets. Due to an issue with
9242          * the old implementation, matchsets containing only the RSSI attribute
9243          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9244          * RSSI for all matchsets, rather than their own matchset for reporting
9245          * all APs with a strong RSSI. This is needed to be compatible with
9246          * older userspace that treated a matchset with only the RSSI as the
9247          * global RSSI for all other matchsets - if there are other matchsets.
9248          */
9249         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9250                 nla_for_each_nested(attr,
9251                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9252                                     tmp) {
9253                         struct nlattr *rssi;
9254
9255                         err = nla_parse_nested_deprecated(tb,
9256                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9257                                                           attr,
9258                                                           nl80211_match_policy,
9259                                                           NULL);
9260                         if (err)
9261                                 return ERR_PTR(err);
9262
9263                         /* SSID and BSSID are mutually exclusive */
9264                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9265                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9266                                 return ERR_PTR(-EINVAL);
9267
9268                         /* add other standalone attributes here */
9269                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9270                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9271                                 n_match_sets++;
9272                                 continue;
9273                         }
9274                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9275                         if (rssi)
9276                                 default_match_rssi = nla_get_s32(rssi);
9277                 }
9278         }
9279
9280         /* However, if there's no other matchset, add the RSSI one */
9281         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9282                 n_match_sets = 1;
9283
9284         if (n_match_sets > max_match_sets)
9285                 return ERR_PTR(-EINVAL);
9286
9287         if (attrs[NL80211_ATTR_IE])
9288                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9289         else
9290                 ie_len = 0;
9291
9292         if (ie_len > wiphy->max_sched_scan_ie_len)
9293                 return ERR_PTR(-EINVAL);
9294
9295         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9296                 /*
9297                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9298                  * each scan plan already specifies its own interval
9299                  */
9300                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9301                         return ERR_PTR(-EINVAL);
9302
9303                 nla_for_each_nested(attr,
9304                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9305                         n_plans++;
9306         } else {
9307                 /*
9308                  * The scan interval attribute is kept for backward
9309                  * compatibility. If no scan plans are specified and sched scan
9310                  * interval is specified, one scan plan will be set with this
9311                  * scan interval and infinite number of iterations.
9312                  */
9313                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9314                         return ERR_PTR(-EINVAL);
9315
9316                 n_plans = 1;
9317         }
9318
9319         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9320                 return ERR_PTR(-EINVAL);
9321
9322         if (!wiphy_ext_feature_isset(
9323                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9324             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9325              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9326                 return ERR_PTR(-EINVAL);
9327
9328         request = kzalloc(sizeof(*request)
9329                         + sizeof(*request->ssids) * n_ssids
9330                         + sizeof(*request->match_sets) * n_match_sets
9331                         + sizeof(*request->scan_plans) * n_plans
9332                         + sizeof(*request->channels) * n_channels
9333                         + ie_len, GFP_KERNEL);
9334         if (!request)
9335                 return ERR_PTR(-ENOMEM);
9336
9337         if (n_ssids)
9338                 request->ssids = (void *)&request->channels[n_channels];
9339         request->n_ssids = n_ssids;
9340         if (ie_len) {
9341                 if (n_ssids)
9342                         request->ie = (void *)(request->ssids + n_ssids);
9343                 else
9344                         request->ie = (void *)(request->channels + n_channels);
9345         }
9346
9347         if (n_match_sets) {
9348                 if (request->ie)
9349                         request->match_sets = (void *)(request->ie + ie_len);
9350                 else if (n_ssids)
9351                         request->match_sets =
9352                                 (void *)(request->ssids + n_ssids);
9353                 else
9354                         request->match_sets =
9355                                 (void *)(request->channels + n_channels);
9356         }
9357         request->n_match_sets = n_match_sets;
9358
9359         if (n_match_sets)
9360                 request->scan_plans = (void *)(request->match_sets +
9361                                                n_match_sets);
9362         else if (request->ie)
9363                 request->scan_plans = (void *)(request->ie + ie_len);
9364         else if (n_ssids)
9365                 request->scan_plans = (void *)(request->ssids + n_ssids);
9366         else
9367                 request->scan_plans = (void *)(request->channels + n_channels);
9368
9369         request->n_scan_plans = n_plans;
9370
9371         i = 0;
9372         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9373                 /* user specified, bail out if channel not found */
9374                 nla_for_each_nested(attr,
9375                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9376                                     tmp) {
9377                         struct ieee80211_channel *chan;
9378
9379                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9380
9381                         if (!chan) {
9382                                 err = -EINVAL;
9383                                 goto out_free;
9384                         }
9385
9386                         /* ignore disabled channels */
9387                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9388                                 continue;
9389
9390                         request->channels[i] = chan;
9391                         i++;
9392                 }
9393         } else {
9394                 /* all channels */
9395                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9396                         int j;
9397
9398                         if (!wiphy->bands[band])
9399                                 continue;
9400                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9401                                 struct ieee80211_channel *chan;
9402
9403                                 chan = &wiphy->bands[band]->channels[j];
9404
9405                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9406                                         continue;
9407
9408                                 request->channels[i] = chan;
9409                                 i++;
9410                         }
9411                 }
9412         }
9413
9414         if (!i) {
9415                 err = -EINVAL;
9416                 goto out_free;
9417         }
9418
9419         request->n_channels = i;
9420
9421         i = 0;
9422         if (n_ssids) {
9423                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9424                                     tmp) {
9425                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9426                                 err = -EINVAL;
9427                                 goto out_free;
9428                         }
9429                         request->ssids[i].ssid_len = nla_len(attr);
9430                         memcpy(request->ssids[i].ssid, nla_data(attr),
9431                                nla_len(attr));
9432                         i++;
9433                 }
9434         }
9435
9436         i = 0;
9437         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9438                 nla_for_each_nested(attr,
9439                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9440                                     tmp) {
9441                         struct nlattr *ssid, *bssid, *rssi;
9442
9443                         err = nla_parse_nested_deprecated(tb,
9444                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9445                                                           attr,
9446                                                           nl80211_match_policy,
9447                                                           NULL);
9448                         if (err)
9449                                 goto out_free;
9450                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9451                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9452
9453                         if (!ssid && !bssid) {
9454                                 i++;
9455                                 continue;
9456                         }
9457
9458                         if (WARN_ON(i >= n_match_sets)) {
9459                                 /* this indicates a programming error,
9460                                  * the loop above should have verified
9461                                  * things properly
9462                                  */
9463                                 err = -EINVAL;
9464                                 goto out_free;
9465                         }
9466
9467                         if (ssid) {
9468                                 memcpy(request->match_sets[i].ssid.ssid,
9469                                        nla_data(ssid), nla_len(ssid));
9470                                 request->match_sets[i].ssid.ssid_len =
9471                                         nla_len(ssid);
9472                         }
9473                         if (bssid)
9474                                 memcpy(request->match_sets[i].bssid,
9475                                        nla_data(bssid), ETH_ALEN);
9476
9477                         /* special attribute - old implementation w/a */
9478                         request->match_sets[i].rssi_thold = default_match_rssi;
9479                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9480                         if (rssi)
9481                                 request->match_sets[i].rssi_thold =
9482                                         nla_get_s32(rssi);
9483
9484                         /* Parse per band RSSI attribute */
9485                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9486                                 &request->match_sets[i],
9487                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9488                                 request->match_sets[i].rssi_thold);
9489                         if (err)
9490                                 goto out_free;
9491
9492                         i++;
9493                 }
9494
9495                 /* there was no other matchset, so the RSSI one is alone */
9496                 if (i == 0 && n_match_sets)
9497                         request->match_sets[0].rssi_thold = default_match_rssi;
9498
9499                 request->min_rssi_thold = INT_MAX;
9500                 for (i = 0; i < n_match_sets; i++)
9501                         request->min_rssi_thold =
9502                                 min(request->match_sets[i].rssi_thold,
9503                                     request->min_rssi_thold);
9504         } else {
9505                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9506         }
9507
9508         if (ie_len) {
9509                 request->ie_len = ie_len;
9510                 memcpy((void *)request->ie,
9511                        nla_data(attrs[NL80211_ATTR_IE]),
9512                        request->ie_len);
9513         }
9514
9515         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9516         if (err)
9517                 goto out_free;
9518
9519         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9520                 request->delay =
9521                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9522
9523         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9524                 request->relative_rssi = nla_get_s8(
9525                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9526                 request->relative_rssi_set = true;
9527         }
9528
9529         if (request->relative_rssi_set &&
9530             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9531                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9532
9533                 rssi_adjust = nla_data(
9534                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9535                 request->rssi_adjust.band = rssi_adjust->band;
9536                 request->rssi_adjust.delta = rssi_adjust->delta;
9537                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9538                         err = -EINVAL;
9539                         goto out_free;
9540                 }
9541         }
9542
9543         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9544         if (err)
9545                 goto out_free;
9546
9547         request->scan_start = jiffies;
9548
9549         return request;
9550
9551 out_free:
9552         kfree(request);
9553         return ERR_PTR(err);
9554 }
9555
9556 static int nl80211_start_sched_scan(struct sk_buff *skb,
9557                                     struct genl_info *info)
9558 {
9559         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9560         struct net_device *dev = info->user_ptr[1];
9561         struct wireless_dev *wdev = dev->ieee80211_ptr;
9562         struct cfg80211_sched_scan_request *sched_scan_req;
9563         bool want_multi;
9564         int err;
9565
9566         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9567                 return -EOPNOTSUPP;
9568
9569         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9570         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9571         if (err)
9572                 return err;
9573
9574         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9575                                                   info->attrs,
9576                                                   rdev->wiphy.max_match_sets);
9577
9578         err = PTR_ERR_OR_ZERO(sched_scan_req);
9579         if (err)
9580                 goto out_err;
9581
9582         /* leave request id zero for legacy request
9583          * or if driver does not support multi-scheduled scan
9584          */
9585         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9586                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9587
9588         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9589         if (err)
9590                 goto out_free;
9591
9592         sched_scan_req->dev = dev;
9593         sched_scan_req->wiphy = &rdev->wiphy;
9594
9595         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9596                 sched_scan_req->owner_nlportid = info->snd_portid;
9597
9598         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9599
9600         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9601         return 0;
9602
9603 out_free:
9604         kfree(sched_scan_req);
9605 out_err:
9606         return err;
9607 }
9608
9609 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9610                                    struct genl_info *info)
9611 {
9612         struct cfg80211_sched_scan_request *req;
9613         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9614         u64 cookie;
9615
9616         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9617                 return -EOPNOTSUPP;
9618
9619         if (info->attrs[NL80211_ATTR_COOKIE]) {
9620                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9621                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9622         }
9623
9624         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9625                                      struct cfg80211_sched_scan_request,
9626                                      list);
9627         if (!req || req->reqid ||
9628             (req->owner_nlportid &&
9629              req->owner_nlportid != info->snd_portid))
9630                 return -ENOENT;
9631
9632         return cfg80211_stop_sched_scan_req(rdev, req, false);
9633 }
9634
9635 static int nl80211_start_radar_detection(struct sk_buff *skb,
9636                                          struct genl_info *info)
9637 {
9638         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9639         struct net_device *dev = info->user_ptr[1];
9640         struct wireless_dev *wdev = dev->ieee80211_ptr;
9641         struct wiphy *wiphy = wdev->wiphy;
9642         struct cfg80211_chan_def chandef;
9643         enum nl80211_dfs_regions dfs_region;
9644         unsigned int cac_time_ms;
9645         int err = -EINVAL;
9646
9647         flush_delayed_work(&rdev->dfs_update_channels_wk);
9648
9649         wiphy_lock(wiphy);
9650
9651         dfs_region = reg_get_dfs_region(wiphy);
9652         if (dfs_region == NL80211_DFS_UNSET)
9653                 goto unlock;
9654
9655         err = nl80211_parse_chandef(rdev, info, &chandef);
9656         if (err)
9657                 goto unlock;
9658
9659         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9660         if (err < 0)
9661                 goto unlock;
9662
9663         if (err == 0) {
9664                 err = -EINVAL;
9665                 goto unlock;
9666         }
9667
9668         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9669                 err = -EINVAL;
9670                 goto unlock;
9671         }
9672
9673         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9674                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9675                                                                 &chandef);
9676                 goto unlock;
9677         }
9678
9679         if (netif_carrier_ok(dev)) {
9680                 err = -EBUSY;
9681                 goto unlock;
9682         }
9683
9684         if (wdev->cac_started) {
9685                 err = -EBUSY;
9686                 goto unlock;
9687         }
9688
9689         /* CAC start is offloaded to HW and can't be started manually */
9690         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
9691                 err = -EOPNOTSUPP;
9692                 goto unlock;
9693         }
9694
9695         if (!rdev->ops->start_radar_detection) {
9696                 err = -EOPNOTSUPP;
9697                 goto unlock;
9698         }
9699
9700         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9701         if (WARN_ON(!cac_time_ms))
9702                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9703
9704         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9705         if (!err) {
9706                 wdev->links[0].ap.chandef = chandef;
9707                 wdev->cac_started = true;
9708                 wdev->cac_start_time = jiffies;
9709                 wdev->cac_time_ms = cac_time_ms;
9710         }
9711 unlock:
9712         wiphy_unlock(wiphy);
9713
9714         return err;
9715 }
9716
9717 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9718                                           struct genl_info *info)
9719 {
9720         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9721         struct net_device *dev = info->user_ptr[1];
9722         struct wireless_dev *wdev = dev->ieee80211_ptr;
9723         struct wiphy *wiphy = wdev->wiphy;
9724         struct cfg80211_chan_def chandef;
9725         enum nl80211_dfs_regions dfs_region;
9726         int err;
9727
9728         dfs_region = reg_get_dfs_region(wiphy);
9729         if (dfs_region == NL80211_DFS_UNSET) {
9730                 GENL_SET_ERR_MSG(info,
9731                                  "DFS Region is not set. Unexpected Radar indication");
9732                 return -EINVAL;
9733         }
9734
9735         err = nl80211_parse_chandef(rdev, info, &chandef);
9736         if (err) {
9737                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9738                 return err;
9739         }
9740
9741         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9742         if (err < 0) {
9743                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9744                 return err;
9745         }
9746
9747         if (err == 0) {
9748                 GENL_SET_ERR_MSG(info,
9749                                  "Unexpected Radar indication for chandef/iftype");
9750                 return -EINVAL;
9751         }
9752
9753         /* Do not process this notification if radar is already detected
9754          * by kernel on this channel, and return success.
9755          */
9756         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9757                 return 0;
9758
9759         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9760
9761         cfg80211_sched_dfs_chan_update(rdev);
9762
9763         rdev->radar_chandef = chandef;
9764
9765         /* Propagate this notification to other radios as well */
9766         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9767
9768         return 0;
9769 }
9770
9771 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9772 {
9773         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9774         unsigned int link_id = nl80211_link_id(info->attrs);
9775         struct net_device *dev = info->user_ptr[1];
9776         struct wireless_dev *wdev = dev->ieee80211_ptr;
9777         struct cfg80211_csa_settings params;
9778         struct nlattr **csa_attrs = NULL;
9779         int err;
9780         bool need_new_beacon = false;
9781         bool need_handle_dfs_flag = true;
9782         int len, i;
9783         u32 cs_count;
9784
9785         if (!rdev->ops->channel_switch ||
9786             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9787                 return -EOPNOTSUPP;
9788
9789         switch (dev->ieee80211_ptr->iftype) {
9790         case NL80211_IFTYPE_AP:
9791         case NL80211_IFTYPE_P2P_GO:
9792                 need_new_beacon = true;
9793                 /* For all modes except AP the handle_dfs flag needs to be
9794                  * supplied to tell the kernel that userspace will handle radar
9795                  * events when they happen. Otherwise a switch to a channel
9796                  * requiring DFS will be rejected.
9797                  */
9798                 need_handle_dfs_flag = false;
9799
9800                 /* useless if AP is not running */
9801                 if (!wdev->links[link_id].ap.beacon_interval)
9802                         return -ENOTCONN;
9803                 break;
9804         case NL80211_IFTYPE_ADHOC:
9805                 if (!wdev->u.ibss.ssid_len)
9806                         return -ENOTCONN;
9807                 break;
9808         case NL80211_IFTYPE_MESH_POINT:
9809                 if (!wdev->u.mesh.id_len)
9810                         return -ENOTCONN;
9811                 break;
9812         default:
9813                 return -EOPNOTSUPP;
9814         }
9815
9816         memset(&params, 0, sizeof(params));
9817         params.beacon_csa.ftm_responder = -1;
9818
9819         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9820             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9821                 return -EINVAL;
9822
9823         /* only important for AP, IBSS and mesh create IEs internally */
9824         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9825                 return -EINVAL;
9826
9827         /* Even though the attribute is u32, the specification says
9828          * u8, so let's make sure we don't overflow.
9829          */
9830         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9831         if (cs_count > 255)
9832                 return -EINVAL;
9833
9834         params.count = cs_count;
9835
9836         if (!need_new_beacon)
9837                 goto skip_beacons;
9838
9839         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9840         if (err)
9841                 goto free;
9842
9843         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9844                             GFP_KERNEL);
9845         if (!csa_attrs) {
9846                 err = -ENOMEM;
9847                 goto free;
9848         }
9849
9850         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9851                                           info->attrs[NL80211_ATTR_CSA_IES],
9852                                           nl80211_policy, info->extack);
9853         if (err)
9854                 goto free;
9855
9856         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9857         if (err)
9858                 goto free;
9859
9860         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9861                 err = -EINVAL;
9862                 goto free;
9863         }
9864
9865         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9866         if (!len || (len % sizeof(u16))) {
9867                 err = -EINVAL;
9868                 goto free;
9869         }
9870
9871         params.n_counter_offsets_beacon = len / sizeof(u16);
9872         if (rdev->wiphy.max_num_csa_counters &&
9873             (params.n_counter_offsets_beacon >
9874              rdev->wiphy.max_num_csa_counters)) {
9875                 err = -EINVAL;
9876                 goto free;
9877         }
9878
9879         params.counter_offsets_beacon =
9880                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9881
9882         /* sanity checks - counters should fit and be the same */
9883         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9884                 u16 offset = params.counter_offsets_beacon[i];
9885
9886                 if (offset >= params.beacon_csa.tail_len) {
9887                         err = -EINVAL;
9888                         goto free;
9889                 }
9890
9891                 if (params.beacon_csa.tail[offset] != params.count) {
9892                         err = -EINVAL;
9893                         goto free;
9894                 }
9895         }
9896
9897         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9898                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9899                 if (!len || (len % sizeof(u16))) {
9900                         err = -EINVAL;
9901                         goto free;
9902                 }
9903
9904                 params.n_counter_offsets_presp = len / sizeof(u16);
9905                 if (rdev->wiphy.max_num_csa_counters &&
9906                     (params.n_counter_offsets_presp >
9907                      rdev->wiphy.max_num_csa_counters)) {
9908                         err = -EINVAL;
9909                         goto free;
9910                 }
9911
9912                 params.counter_offsets_presp =
9913                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9914
9915                 /* sanity checks - counters should fit and be the same */
9916                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9917                         u16 offset = params.counter_offsets_presp[i];
9918
9919                         if (offset >= params.beacon_csa.probe_resp_len) {
9920                                 err = -EINVAL;
9921                                 goto free;
9922                         }
9923
9924                         if (params.beacon_csa.probe_resp[offset] !=
9925                             params.count) {
9926                                 err = -EINVAL;
9927                                 goto free;
9928                         }
9929                 }
9930         }
9931
9932 skip_beacons:
9933         err = nl80211_parse_chandef(rdev, info, &params.chandef);
9934         if (err)
9935                 goto free;
9936
9937         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9938                                            wdev->iftype)) {
9939                 err = -EINVAL;
9940                 goto free;
9941         }
9942
9943         err = cfg80211_chandef_dfs_required(wdev->wiphy,
9944                                             &params.chandef,
9945                                             wdev->iftype);
9946         if (err < 0)
9947                 goto free;
9948
9949         if (err > 0) {
9950                 params.radar_required = true;
9951                 if (need_handle_dfs_flag &&
9952                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9953                         err = -EINVAL;
9954                         goto free;
9955                 }
9956         }
9957
9958         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9959                 params.block_tx = true;
9960
9961         wdev_lock(wdev);
9962         err = rdev_channel_switch(rdev, dev, &params);
9963         wdev_unlock(wdev);
9964
9965 free:
9966         kfree(params.beacon_after.mbssid_ies);
9967         kfree(params.beacon_csa.mbssid_ies);
9968         kfree(csa_attrs);
9969         return err;
9970 }
9971
9972 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9973                             u32 seq, int flags,
9974                             struct cfg80211_registered_device *rdev,
9975                             struct wireless_dev *wdev,
9976                             struct cfg80211_internal_bss *intbss)
9977 {
9978         struct cfg80211_bss *res = &intbss->pub;
9979         const struct cfg80211_bss_ies *ies;
9980         unsigned int link_id;
9981         void *hdr;
9982         struct nlattr *bss;
9983
9984         ASSERT_WDEV_LOCK(wdev);
9985
9986         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9987                              NL80211_CMD_NEW_SCAN_RESULTS);
9988         if (!hdr)
9989                 return -1;
9990
9991         genl_dump_check_consistent(cb, hdr);
9992
9993         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9994                 goto nla_put_failure;
9995         if (wdev->netdev &&
9996             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9997                 goto nla_put_failure;
9998         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9999                               NL80211_ATTR_PAD))
10000                 goto nla_put_failure;
10001
10002         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10003         if (!bss)
10004                 goto nla_put_failure;
10005         if ((!is_zero_ether_addr(res->bssid) &&
10006              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10007                 goto nla_put_failure;
10008
10009         rcu_read_lock();
10010         /* indicate whether we have probe response data or not */
10011         if (rcu_access_pointer(res->proberesp_ies) &&
10012             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10013                 goto fail_unlock_rcu;
10014
10015         /* this pointer prefers to be pointed to probe response data
10016          * but is always valid
10017          */
10018         ies = rcu_dereference(res->ies);
10019         if (ies) {
10020                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10021                                       NL80211_BSS_PAD))
10022                         goto fail_unlock_rcu;
10023                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10024                                         ies->len, ies->data))
10025                         goto fail_unlock_rcu;
10026         }
10027
10028         /* and this pointer is always (unless driver didn't know) beacon data */
10029         ies = rcu_dereference(res->beacon_ies);
10030         if (ies && ies->from_beacon) {
10031                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10032                                       NL80211_BSS_PAD))
10033                         goto fail_unlock_rcu;
10034                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10035                                         ies->len, ies->data))
10036                         goto fail_unlock_rcu;
10037         }
10038         rcu_read_unlock();
10039
10040         if (res->beacon_interval &&
10041             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10042                 goto nla_put_failure;
10043         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10044             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10045             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10046                         res->channel->freq_offset) ||
10047             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10048             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10049                         jiffies_to_msecs(jiffies - intbss->ts)))
10050                 goto nla_put_failure;
10051
10052         if (intbss->parent_tsf &&
10053             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10054                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10055              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10056                      intbss->parent_bssid)))
10057                 goto nla_put_failure;
10058
10059         if (intbss->ts_boottime &&
10060             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10061                               intbss->ts_boottime, NL80211_BSS_PAD))
10062                 goto nla_put_failure;
10063
10064         if (!nl80211_put_signal(msg, intbss->pub.chains,
10065                                 intbss->pub.chain_signal,
10066                                 NL80211_BSS_CHAIN_SIGNAL))
10067                 goto nla_put_failure;
10068
10069         switch (rdev->wiphy.signal_type) {
10070         case CFG80211_SIGNAL_TYPE_MBM:
10071                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10072                         goto nla_put_failure;
10073                 break;
10074         case CFG80211_SIGNAL_TYPE_UNSPEC:
10075                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10076                         goto nla_put_failure;
10077                 break;
10078         default:
10079                 break;
10080         }
10081
10082         switch (wdev->iftype) {
10083         case NL80211_IFTYPE_P2P_CLIENT:
10084         case NL80211_IFTYPE_STATION:
10085                 for_each_valid_link(wdev, link_id) {
10086                         if (intbss == wdev->links[link_id].client.current_bss &&
10087                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10088                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10089                              (wdev->valid_links &&
10090                               nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10091                                          link_id))))
10092                                 goto nla_put_failure;
10093                 }
10094                 break;
10095         case NL80211_IFTYPE_ADHOC:
10096                 if (intbss == wdev->u.ibss.current_bss &&
10097                     nla_put_u32(msg, NL80211_BSS_STATUS,
10098                                 NL80211_BSS_STATUS_IBSS_JOINED))
10099                         goto nla_put_failure;
10100                 break;
10101         default:
10102                 break;
10103         }
10104
10105         nla_nest_end(msg, bss);
10106
10107         genlmsg_end(msg, hdr);
10108         return 0;
10109
10110  fail_unlock_rcu:
10111         rcu_read_unlock();
10112  nla_put_failure:
10113         genlmsg_cancel(msg, hdr);
10114         return -EMSGSIZE;
10115 }
10116
10117 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10118 {
10119         struct cfg80211_registered_device *rdev;
10120         struct cfg80211_internal_bss *scan;
10121         struct wireless_dev *wdev;
10122         int start = cb->args[2], idx = 0;
10123         int err;
10124
10125         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10126         if (err)
10127                 return err;
10128         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10129         __acquire(&rdev->wiphy.mtx);
10130
10131         wdev_lock(wdev);
10132         spin_lock_bh(&rdev->bss_lock);
10133
10134         /*
10135          * dump_scan will be called multiple times to break up the scan results
10136          * into multiple messages.  It is unlikely that any more bss-es will be
10137          * expired after the first call, so only call only call this on the
10138          * first dump_scan invocation.
10139          */
10140         if (start == 0)
10141                 cfg80211_bss_expire(rdev);
10142
10143         cb->seq = rdev->bss_generation;
10144
10145         list_for_each_entry(scan, &rdev->bss_list, list) {
10146                 if (++idx <= start)
10147                         continue;
10148                 if (nl80211_send_bss(skb, cb,
10149                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10150                                 rdev, wdev, scan) < 0) {
10151                         idx--;
10152                         break;
10153                 }
10154         }
10155
10156         spin_unlock_bh(&rdev->bss_lock);
10157         wdev_unlock(wdev);
10158
10159         cb->args[2] = idx;
10160         wiphy_unlock(&rdev->wiphy);
10161
10162         return skb->len;
10163 }
10164
10165 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10166                                int flags, struct net_device *dev,
10167                                bool allow_radio_stats,
10168                                struct survey_info *survey)
10169 {
10170         void *hdr;
10171         struct nlattr *infoattr;
10172
10173         /* skip radio stats if userspace didn't request them */
10174         if (!survey->channel && !allow_radio_stats)
10175                 return 0;
10176
10177         hdr = nl80211hdr_put(msg, portid, seq, flags,
10178                              NL80211_CMD_NEW_SURVEY_RESULTS);
10179         if (!hdr)
10180                 return -ENOMEM;
10181
10182         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10183                 goto nla_put_failure;
10184
10185         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10186         if (!infoattr)
10187                 goto nla_put_failure;
10188
10189         if (survey->channel &&
10190             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10191                         survey->channel->center_freq))
10192                 goto nla_put_failure;
10193
10194         if (survey->channel && survey->channel->freq_offset &&
10195             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10196                         survey->channel->freq_offset))
10197                 goto nla_put_failure;
10198
10199         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10200             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10201                 goto nla_put_failure;
10202         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10203             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10204                 goto nla_put_failure;
10205         if ((survey->filled & SURVEY_INFO_TIME) &&
10206             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10207                         survey->time, NL80211_SURVEY_INFO_PAD))
10208                 goto nla_put_failure;
10209         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10210             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10211                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10212                 goto nla_put_failure;
10213         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10214             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10215                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10216                 goto nla_put_failure;
10217         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10218             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10219                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10220                 goto nla_put_failure;
10221         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10222             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10223                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10224                 goto nla_put_failure;
10225         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10226             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10227                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10228                 goto nla_put_failure;
10229         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10230             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10231                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10232                 goto nla_put_failure;
10233
10234         nla_nest_end(msg, infoattr);
10235
10236         genlmsg_end(msg, hdr);
10237         return 0;
10238
10239  nla_put_failure:
10240         genlmsg_cancel(msg, hdr);
10241         return -EMSGSIZE;
10242 }
10243
10244 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10245 {
10246         struct nlattr **attrbuf;
10247         struct survey_info survey;
10248         struct cfg80211_registered_device *rdev;
10249         struct wireless_dev *wdev;
10250         int survey_idx = cb->args[2];
10251         int res;
10252         bool radio_stats;
10253
10254         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10255         if (!attrbuf)
10256                 return -ENOMEM;
10257
10258         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10259         if (res) {
10260                 kfree(attrbuf);
10261                 return res;
10262         }
10263         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10264         __acquire(&rdev->wiphy.mtx);
10265
10266         /* prepare_wdev_dump parsed the attributes */
10267         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10268
10269         if (!wdev->netdev) {
10270                 res = -EINVAL;
10271                 goto out_err;
10272         }
10273
10274         if (!rdev->ops->dump_survey) {
10275                 res = -EOPNOTSUPP;
10276                 goto out_err;
10277         }
10278
10279         while (1) {
10280                 wdev_lock(wdev);
10281                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10282                 wdev_unlock(wdev);
10283                 if (res == -ENOENT)
10284                         break;
10285                 if (res)
10286                         goto out_err;
10287
10288                 /* don't send disabled channels, but do send non-channel data */
10289                 if (survey.channel &&
10290                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10291                         survey_idx++;
10292                         continue;
10293                 }
10294
10295                 if (nl80211_send_survey(skb,
10296                                 NETLINK_CB(cb->skb).portid,
10297                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10298                                 wdev->netdev, radio_stats, &survey) < 0)
10299                         goto out;
10300                 survey_idx++;
10301         }
10302
10303  out:
10304         cb->args[2] = survey_idx;
10305         res = skb->len;
10306  out_err:
10307         kfree(attrbuf);
10308         wiphy_unlock(&rdev->wiphy);
10309         return res;
10310 }
10311
10312 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10313 {
10314         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10315                                   NL80211_WPA_VERSION_2 |
10316                                   NL80211_WPA_VERSION_3));
10317 }
10318
10319 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10320 {
10321         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10322         struct net_device *dev = info->user_ptr[1];
10323         struct ieee80211_channel *chan;
10324         const u8 *bssid, *ssid;
10325         int err, ssid_len;
10326         enum nl80211_auth_type auth_type;
10327         struct key_parse key;
10328         bool local_state_change;
10329         struct cfg80211_auth_request req = {};
10330         u32 freq;
10331
10332         if (!info->attrs[NL80211_ATTR_MAC])
10333                 return -EINVAL;
10334
10335         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10336                 return -EINVAL;
10337
10338         if (!info->attrs[NL80211_ATTR_SSID])
10339                 return -EINVAL;
10340
10341         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10342                 return -EINVAL;
10343
10344         err = nl80211_parse_key(info, &key);
10345         if (err)
10346                 return err;
10347
10348         if (key.idx >= 0) {
10349                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10350                         return -EINVAL;
10351                 if (!key.p.key || !key.p.key_len)
10352                         return -EINVAL;
10353                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10354                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10355                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10356                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10357                         return -EINVAL;
10358                 if (key.idx > 3)
10359                         return -EINVAL;
10360         } else {
10361                 key.p.key_len = 0;
10362                 key.p.key = NULL;
10363         }
10364
10365         if (key.idx >= 0) {
10366                 int i;
10367                 bool ok = false;
10368
10369                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10370                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10371                                 ok = true;
10372                                 break;
10373                         }
10374                 }
10375                 if (!ok)
10376                         return -EINVAL;
10377         }
10378
10379         if (!rdev->ops->auth)
10380                 return -EOPNOTSUPP;
10381
10382         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10383             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10384                 return -EOPNOTSUPP;
10385
10386         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10387         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10388         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10389                 freq +=
10390                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10391
10392         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10393         if (!chan)
10394                 return -EINVAL;
10395
10396         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10397         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10398
10399         if (info->attrs[NL80211_ATTR_IE]) {
10400                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10401                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10402         }
10403
10404         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10405         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10406                 return -EINVAL;
10407
10408         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10409              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10410              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10411              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10412             !info->attrs[NL80211_ATTR_AUTH_DATA])
10413                 return -EINVAL;
10414
10415         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10416                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10417                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10418                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10419                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10420                         return -EINVAL;
10421                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10422                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10423         }
10424
10425         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10426
10427         /*
10428          * Since we no longer track auth state, ignore
10429          * requests to only change local state.
10430          */
10431         if (local_state_change)
10432                 return 0;
10433
10434         req.auth_type = auth_type;
10435         req.key = key.p.key;
10436         req.key_len = key.p.key_len;
10437         req.key_idx = key.idx;
10438         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10439         if (req.link_id >= 0) {
10440                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10441                         return -EINVAL;
10442                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10443                         return -EINVAL;
10444                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10445         }
10446
10447         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10448                                    IEEE80211_BSS_TYPE_ESS,
10449                                    IEEE80211_PRIVACY_ANY);
10450         if (!req.bss)
10451                 return -ENOENT;
10452
10453         wdev_lock(dev->ieee80211_ptr);
10454         err = cfg80211_mlme_auth(rdev, dev, &req);
10455         wdev_unlock(dev->ieee80211_ptr);
10456
10457         cfg80211_put_bss(&rdev->wiphy, req.bss);
10458
10459         return err;
10460 }
10461
10462 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10463                                      struct genl_info *info)
10464 {
10465         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10466                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10467                 return -EINVAL;
10468         }
10469
10470         if (!rdev->ops->tx_control_port ||
10471             !wiphy_ext_feature_isset(&rdev->wiphy,
10472                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10473                 return -EOPNOTSUPP;
10474
10475         return 0;
10476 }
10477
10478 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10479                                    struct genl_info *info,
10480                                    struct cfg80211_crypto_settings *settings,
10481                                    int cipher_limit)
10482 {
10483         memset(settings, 0, sizeof(*settings));
10484
10485         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10486
10487         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10488                 u16 proto;
10489
10490                 proto = nla_get_u16(
10491                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10492                 settings->control_port_ethertype = cpu_to_be16(proto);
10493                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10494                     proto != ETH_P_PAE)
10495                         return -EINVAL;
10496                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10497                         settings->control_port_no_encrypt = true;
10498         } else
10499                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10500
10501         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10502                 int r = validate_pae_over_nl80211(rdev, info);
10503
10504                 if (r < 0)
10505                         return r;
10506
10507                 settings->control_port_over_nl80211 = true;
10508
10509                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10510                         settings->control_port_no_preauth = true;
10511         }
10512
10513         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10514                 void *data;
10515                 int len, i;
10516
10517                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10518                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10519                 settings->n_ciphers_pairwise = len / sizeof(u32);
10520
10521                 if (len % sizeof(u32))
10522                         return -EINVAL;
10523
10524                 if (settings->n_ciphers_pairwise > cipher_limit)
10525                         return -EINVAL;
10526
10527                 memcpy(settings->ciphers_pairwise, data, len);
10528
10529                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10530                         if (!cfg80211_supported_cipher_suite(
10531                                         &rdev->wiphy,
10532                                         settings->ciphers_pairwise[i]))
10533                                 return -EINVAL;
10534         }
10535
10536         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10537                 settings->cipher_group =
10538                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10539                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10540                                                      settings->cipher_group))
10541                         return -EINVAL;
10542         }
10543
10544         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10545                 settings->wpa_versions =
10546                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10547                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10548                         return -EINVAL;
10549         }
10550
10551         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10552                 void *data;
10553                 int len;
10554
10555                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10556                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10557                 settings->n_akm_suites = len / sizeof(u32);
10558
10559                 if (len % sizeof(u32))
10560                         return -EINVAL;
10561
10562                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10563                         return -EINVAL;
10564
10565                 memcpy(settings->akm_suites, data, len);
10566         }
10567
10568         if (info->attrs[NL80211_ATTR_PMK]) {
10569                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10570                         return -EINVAL;
10571                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10572                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10573                     !wiphy_ext_feature_isset(&rdev->wiphy,
10574                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10575                         return -EINVAL;
10576                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10577         }
10578
10579         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10580                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10581                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10582                     !wiphy_ext_feature_isset(&rdev->wiphy,
10583                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10584                         return -EINVAL;
10585                 settings->sae_pwd =
10586                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10587                 settings->sae_pwd_len =
10588                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10589         }
10590
10591         if (info->attrs[NL80211_ATTR_SAE_PWE])
10592                 settings->sae_pwe =
10593                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10594         else
10595                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10596
10597         return 0;
10598 }
10599
10600 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10601                                               const u8 *ssid, int ssid_len,
10602                                               struct nlattr **attrs,
10603                                               const u8 **bssid_out)
10604 {
10605         struct ieee80211_channel *chan;
10606         struct cfg80211_bss *bss;
10607         const u8 *bssid;
10608         u32 freq;
10609
10610         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10611                 return ERR_PTR(-EINVAL);
10612
10613         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10614
10615         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10616         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10617                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10618
10619         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10620         if (!chan)
10621                 return ERR_PTR(-EINVAL);
10622
10623         bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10624                                ssid, ssid_len,
10625                                IEEE80211_BSS_TYPE_ESS,
10626                                IEEE80211_PRIVACY_ANY);
10627         if (!bss)
10628                 return ERR_PTR(-ENOENT);
10629
10630         *bssid_out = bssid;
10631         return bss;
10632 }
10633
10634 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10635 {
10636         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10637         struct net_device *dev = info->user_ptr[1];
10638         struct cfg80211_assoc_request req = {};
10639         struct nlattr **attrs = NULL;
10640         const u8 *bssid, *ssid;
10641         unsigned int link_id;
10642         int err, ssid_len;
10643
10644         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10645             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10646                 return -EPERM;
10647
10648         if (!info->attrs[NL80211_ATTR_SSID])
10649                 return -EINVAL;
10650
10651         if (!rdev->ops->assoc)
10652                 return -EOPNOTSUPP;
10653
10654         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10655             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10656                 return -EOPNOTSUPP;
10657
10658         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10659         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10660
10661         if (info->attrs[NL80211_ATTR_IE]) {
10662                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10663                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10664
10665                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10666                                            req.ie, req.ie_len)) {
10667                         GENL_SET_ERR_MSG(info,
10668                                          "non-inheritance makes no sense");
10669                         return -EINVAL;
10670                 }
10671         }
10672
10673         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10674                 enum nl80211_mfp mfp =
10675                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10676                 if (mfp == NL80211_MFP_REQUIRED)
10677                         req.use_mfp = true;
10678                 else if (mfp != NL80211_MFP_NO)
10679                         return -EINVAL;
10680         }
10681
10682         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10683                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10684
10685         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10686                 req.flags |= ASSOC_REQ_DISABLE_HT;
10687
10688         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10689                 memcpy(&req.ht_capa_mask,
10690                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10691                        sizeof(req.ht_capa_mask));
10692
10693         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10694                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10695                         return -EINVAL;
10696                 memcpy(&req.ht_capa,
10697                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10698                        sizeof(req.ht_capa));
10699         }
10700
10701         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10702                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10703
10704         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10705                 req.flags |= ASSOC_REQ_DISABLE_HE;
10706
10707         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
10708                 req.flags |= ASSOC_REQ_DISABLE_EHT;
10709
10710         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10711                 memcpy(&req.vht_capa_mask,
10712                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10713                        sizeof(req.vht_capa_mask));
10714
10715         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10716                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10717                         return -EINVAL;
10718                 memcpy(&req.vht_capa,
10719                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10720                        sizeof(req.vht_capa));
10721         }
10722
10723         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10724                 if (!((rdev->wiphy.features &
10725                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10726                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10727                     !wiphy_ext_feature_isset(&rdev->wiphy,
10728                                              NL80211_EXT_FEATURE_RRM))
10729                         return -EINVAL;
10730                 req.flags |= ASSOC_REQ_USE_RRM;
10731         }
10732
10733         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10734                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10735                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10736                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10737                         return -EINVAL;
10738                 req.fils_nonces =
10739                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10740         }
10741
10742         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10743                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10744                         return -EINVAL;
10745                 memcpy(&req.s1g_capa_mask,
10746                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10747                        sizeof(req.s1g_capa_mask));
10748         }
10749
10750         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10751                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10752                         return -EINVAL;
10753                 memcpy(&req.s1g_capa,
10754                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10755                        sizeof(req.s1g_capa));
10756         }
10757
10758         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10759
10760         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
10761                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
10762                 struct nlattr *link;
10763                 int rem = 0;
10764
10765                 if (req.link_id < 0)
10766                         return -EINVAL;
10767
10768                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10769                         return -EINVAL;
10770
10771                 if (info->attrs[NL80211_ATTR_MAC] ||
10772                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10773                     !info->attrs[NL80211_ATTR_MLD_ADDR])
10774                         return -EINVAL;
10775
10776                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10777
10778                 attrs = kzalloc(attrsize, GFP_KERNEL);
10779                 if (!attrs)
10780                         return -ENOMEM;
10781
10782                 nla_for_each_nested(link,
10783                                     info->attrs[NL80211_ATTR_MLO_LINKS],
10784                                     rem) {
10785                         memset(attrs, 0, attrsize);
10786
10787                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
10788                                          link, NULL, NULL);
10789
10790                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
10791                                 err = -EINVAL;
10792                                 goto free;
10793                         }
10794
10795                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
10796                         /* cannot use the same link ID again */
10797                         if (req.links[link_id].bss) {
10798                                 err = -EINVAL;
10799                                 goto free;
10800                         }
10801                         req.links[link_id].bss =
10802                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs,
10803                                                   &bssid);
10804                         if (IS_ERR(req.links[link_id].bss)) {
10805                                 err = PTR_ERR(req.links[link_id].bss);
10806                                 req.links[link_id].bss = NULL;
10807                                 goto free;
10808                         }
10809
10810                         if (attrs[NL80211_ATTR_IE]) {
10811                                 req.links[link_id].elems =
10812                                         nla_data(attrs[NL80211_ATTR_IE]);
10813                                 req.links[link_id].elems_len =
10814                                         nla_len(attrs[NL80211_ATTR_IE]);
10815
10816                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
10817                                                        req.links[link_id].elems,
10818                                                        req.links[link_id].elems_len)) {
10819                                         GENL_SET_ERR_MSG(info,
10820                                                          "cannot deal with fragmentation");
10821                                         err = -EINVAL;
10822                                         goto free;
10823                                 }
10824
10825                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10826                                                            req.links[link_id].elems,
10827                                                            req.links[link_id].elems_len)) {
10828                                         GENL_SET_ERR_MSG(info,
10829                                                          "cannot deal with non-inheritance");
10830                                         err = -EINVAL;
10831                                         goto free;
10832                                 }
10833                         }
10834                 }
10835
10836                 if (!req.links[req.link_id].bss) {
10837                         err = -EINVAL;
10838                         goto free;
10839                 }
10840
10841                 if (req.links[req.link_id].elems_len) {
10842                         GENL_SET_ERR_MSG(info,
10843                                          "cannot have per-link elems on assoc link");
10844                         err = -EINVAL;
10845                         goto free;
10846                 }
10847
10848                 kfree(attrs);
10849                 attrs = NULL;
10850         } else {
10851                 if (req.link_id >= 0)
10852                         return -EINVAL;
10853
10854                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs,
10855                                             &bssid);
10856                 if (IS_ERR(req.bss))
10857                         return PTR_ERR(req.bss);
10858         }
10859
10860         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10861         if (!err) {
10862                 wdev_lock(dev->ieee80211_ptr);
10863
10864                 err = cfg80211_mlme_assoc(rdev, dev, &req);
10865
10866                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10867                         dev->ieee80211_ptr->conn_owner_nlportid =
10868                                 info->snd_portid;
10869                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10870                                bssid, ETH_ALEN);
10871                 }
10872
10873                 wdev_unlock(dev->ieee80211_ptr);
10874         }
10875
10876 free:
10877         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
10878                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
10879         cfg80211_put_bss(&rdev->wiphy, req.bss);
10880         kfree(attrs);
10881
10882         return err;
10883 }
10884
10885 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10886 {
10887         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10888         struct net_device *dev = info->user_ptr[1];
10889         const u8 *ie = NULL, *bssid;
10890         int ie_len = 0, err;
10891         u16 reason_code;
10892         bool local_state_change;
10893
10894         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10895             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10896                 return -EPERM;
10897
10898         if (!info->attrs[NL80211_ATTR_MAC])
10899                 return -EINVAL;
10900
10901         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10902                 return -EINVAL;
10903
10904         if (!rdev->ops->deauth)
10905                 return -EOPNOTSUPP;
10906
10907         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10908             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10909                 return -EOPNOTSUPP;
10910
10911         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10912
10913         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10914         if (reason_code == 0) {
10915                 /* Reason Code 0 is reserved */
10916                 return -EINVAL;
10917         }
10918
10919         if (info->attrs[NL80211_ATTR_IE]) {
10920                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10921                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10922         }
10923
10924         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10925
10926         wdev_lock(dev->ieee80211_ptr);
10927         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
10928                                    local_state_change);
10929         wdev_unlock(dev->ieee80211_ptr);
10930         return err;
10931 }
10932
10933 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
10934 {
10935         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10936         struct net_device *dev = info->user_ptr[1];
10937         const u8 *ie = NULL, *bssid;
10938         int ie_len = 0, err;
10939         u16 reason_code;
10940         bool local_state_change;
10941
10942         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10943             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10944                 return -EPERM;
10945
10946         if (!info->attrs[NL80211_ATTR_MAC])
10947                 return -EINVAL;
10948
10949         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10950                 return -EINVAL;
10951
10952         if (!rdev->ops->disassoc)
10953                 return -EOPNOTSUPP;
10954
10955         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10956             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10957                 return -EOPNOTSUPP;
10958
10959         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10960
10961         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10962         if (reason_code == 0) {
10963                 /* Reason Code 0 is reserved */
10964                 return -EINVAL;
10965         }
10966
10967         if (info->attrs[NL80211_ATTR_IE]) {
10968                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10969                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10970         }
10971
10972         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10973
10974         wdev_lock(dev->ieee80211_ptr);
10975         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
10976                                      local_state_change);
10977         wdev_unlock(dev->ieee80211_ptr);
10978         return err;
10979 }
10980
10981 static bool
10982 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
10983                          int mcast_rate[NUM_NL80211_BANDS],
10984                          int rateval)
10985 {
10986         struct wiphy *wiphy = &rdev->wiphy;
10987         bool found = false;
10988         int band, i;
10989
10990         for (band = 0; band < NUM_NL80211_BANDS; band++) {
10991                 struct ieee80211_supported_band *sband;
10992
10993                 sband = wiphy->bands[band];
10994                 if (!sband)
10995                         continue;
10996
10997                 for (i = 0; i < sband->n_bitrates; i++) {
10998                         if (sband->bitrates[i].bitrate == rateval) {
10999                                 mcast_rate[band] = i + 1;
11000                                 found = true;
11001                                 break;
11002                         }
11003                 }
11004         }
11005
11006         return found;
11007 }
11008
11009 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11010 {
11011         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11012         struct net_device *dev = info->user_ptr[1];
11013         struct cfg80211_ibss_params ibss;
11014         struct wiphy *wiphy;
11015         struct cfg80211_cached_keys *connkeys = NULL;
11016         int err;
11017
11018         memset(&ibss, 0, sizeof(ibss));
11019
11020         if (!info->attrs[NL80211_ATTR_SSID] ||
11021             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11022                 return -EINVAL;
11023
11024         ibss.beacon_interval = 100;
11025
11026         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11027                 ibss.beacon_interval =
11028                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11029
11030         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11031                                            ibss.beacon_interval);
11032         if (err)
11033                 return err;
11034
11035         if (!rdev->ops->join_ibss)
11036                 return -EOPNOTSUPP;
11037
11038         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11039                 return -EOPNOTSUPP;
11040
11041         wiphy = &rdev->wiphy;
11042
11043         if (info->attrs[NL80211_ATTR_MAC]) {
11044                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11045
11046                 if (!is_valid_ether_addr(ibss.bssid))
11047                         return -EINVAL;
11048         }
11049         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11050         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11051
11052         if (info->attrs[NL80211_ATTR_IE]) {
11053                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11054                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11055         }
11056
11057         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11058         if (err)
11059                 return err;
11060
11061         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11062                                      NL80211_IFTYPE_ADHOC))
11063                 return -EINVAL;
11064
11065         switch (ibss.chandef.width) {
11066         case NL80211_CHAN_WIDTH_5:
11067         case NL80211_CHAN_WIDTH_10:
11068         case NL80211_CHAN_WIDTH_20_NOHT:
11069                 break;
11070         case NL80211_CHAN_WIDTH_20:
11071         case NL80211_CHAN_WIDTH_40:
11072                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11073                         return -EINVAL;
11074                 break;
11075         case NL80211_CHAN_WIDTH_80:
11076         case NL80211_CHAN_WIDTH_80P80:
11077         case NL80211_CHAN_WIDTH_160:
11078                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11079                         return -EINVAL;
11080                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11081                                              NL80211_EXT_FEATURE_VHT_IBSS))
11082                         return -EINVAL;
11083                 break;
11084         case NL80211_CHAN_WIDTH_320:
11085                 return -EINVAL;
11086         default:
11087                 return -EINVAL;
11088         }
11089
11090         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11091         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11092
11093         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11094                 u8 *rates =
11095                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11096                 int n_rates =
11097                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11098                 struct ieee80211_supported_band *sband =
11099                         wiphy->bands[ibss.chandef.chan->band];
11100
11101                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11102                                              &ibss.basic_rates);
11103                 if (err)
11104                         return err;
11105         }
11106
11107         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11108                 memcpy(&ibss.ht_capa_mask,
11109                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11110                        sizeof(ibss.ht_capa_mask));
11111
11112         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11113                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11114                         return -EINVAL;
11115                 memcpy(&ibss.ht_capa,
11116                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11117                        sizeof(ibss.ht_capa));
11118         }
11119
11120         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11121             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11122                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11123                 return -EINVAL;
11124
11125         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11126                 bool no_ht = false;
11127
11128                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11129                 if (IS_ERR(connkeys))
11130                         return PTR_ERR(connkeys);
11131
11132                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11133                     no_ht) {
11134                         kfree_sensitive(connkeys);
11135                         return -EINVAL;
11136                 }
11137         }
11138
11139         ibss.control_port =
11140                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11141
11142         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11143                 int r = validate_pae_over_nl80211(rdev, info);
11144
11145                 if (r < 0) {
11146                         kfree_sensitive(connkeys);
11147                         return r;
11148                 }
11149
11150                 ibss.control_port_over_nl80211 = true;
11151         }
11152
11153         ibss.userspace_handles_dfs =
11154                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11155
11156         wdev_lock(dev->ieee80211_ptr);
11157         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11158         if (err)
11159                 kfree_sensitive(connkeys);
11160         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11161                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11162         wdev_unlock(dev->ieee80211_ptr);
11163
11164         return err;
11165 }
11166
11167 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11168 {
11169         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11170         struct net_device *dev = info->user_ptr[1];
11171
11172         if (!rdev->ops->leave_ibss)
11173                 return -EOPNOTSUPP;
11174
11175         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11176                 return -EOPNOTSUPP;
11177
11178         return cfg80211_leave_ibss(rdev, dev, false);
11179 }
11180
11181 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11182 {
11183         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11184         struct net_device *dev = info->user_ptr[1];
11185         int mcast_rate[NUM_NL80211_BANDS];
11186         u32 nla_rate;
11187         int err;
11188
11189         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11190             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11191             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11192                 return -EOPNOTSUPP;
11193
11194         if (!rdev->ops->set_mcast_rate)
11195                 return -EOPNOTSUPP;
11196
11197         memset(mcast_rate, 0, sizeof(mcast_rate));
11198
11199         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11200                 return -EINVAL;
11201
11202         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11203         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11204                 return -EINVAL;
11205
11206         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
11207
11208         return err;
11209 }
11210
11211 static struct sk_buff *
11212 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11213                             struct wireless_dev *wdev, int approxlen,
11214                             u32 portid, u32 seq, enum nl80211_commands cmd,
11215                             enum nl80211_attrs attr,
11216                             const struct nl80211_vendor_cmd_info *info,
11217                             gfp_t gfp)
11218 {
11219         struct sk_buff *skb;
11220         void *hdr;
11221         struct nlattr *data;
11222
11223         skb = nlmsg_new(approxlen + 100, gfp);
11224         if (!skb)
11225                 return NULL;
11226
11227         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11228         if (!hdr) {
11229                 kfree_skb(skb);
11230                 return NULL;
11231         }
11232
11233         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11234                 goto nla_put_failure;
11235
11236         if (info) {
11237                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11238                                 info->vendor_id))
11239                         goto nla_put_failure;
11240                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11241                                 info->subcmd))
11242                         goto nla_put_failure;
11243         }
11244
11245         if (wdev) {
11246                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11247                                       wdev_id(wdev), NL80211_ATTR_PAD))
11248                         goto nla_put_failure;
11249                 if (wdev->netdev &&
11250                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11251                                 wdev->netdev->ifindex))
11252                         goto nla_put_failure;
11253         }
11254
11255         data = nla_nest_start_noflag(skb, attr);
11256         if (!data)
11257                 goto nla_put_failure;
11258
11259         ((void **)skb->cb)[0] = rdev;
11260         ((void **)skb->cb)[1] = hdr;
11261         ((void **)skb->cb)[2] = data;
11262
11263         return skb;
11264
11265  nla_put_failure:
11266         kfree_skb(skb);
11267         return NULL;
11268 }
11269
11270 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11271                                            struct wireless_dev *wdev,
11272                                            enum nl80211_commands cmd,
11273                                            enum nl80211_attrs attr,
11274                                            unsigned int portid,
11275                                            int vendor_event_idx,
11276                                            int approxlen, gfp_t gfp)
11277 {
11278         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11279         const struct nl80211_vendor_cmd_info *info;
11280
11281         switch (cmd) {
11282         case NL80211_CMD_TESTMODE:
11283                 if (WARN_ON(vendor_event_idx != -1))
11284                         return NULL;
11285                 info = NULL;
11286                 break;
11287         case NL80211_CMD_VENDOR:
11288                 if (WARN_ON(vendor_event_idx < 0 ||
11289                             vendor_event_idx >= wiphy->n_vendor_events))
11290                         return NULL;
11291                 info = &wiphy->vendor_events[vendor_event_idx];
11292                 break;
11293         default:
11294                 WARN_ON(1);
11295                 return NULL;
11296         }
11297
11298         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11299                                            cmd, attr, info, gfp);
11300 }
11301 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11302
11303 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11304 {
11305         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11306         void *hdr = ((void **)skb->cb)[1];
11307         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11308         struct nlattr *data = ((void **)skb->cb)[2];
11309         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11310
11311         /* clear CB data for netlink core to own from now on */
11312         memset(skb->cb, 0, sizeof(skb->cb));
11313
11314         nla_nest_end(skb, data);
11315         genlmsg_end(skb, hdr);
11316
11317         if (nlhdr->nlmsg_pid) {
11318                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11319                                 nlhdr->nlmsg_pid);
11320         } else {
11321                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11322                         mcgrp = NL80211_MCGRP_VENDOR;
11323
11324                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11325                                         skb, 0, mcgrp, gfp);
11326         }
11327 }
11328 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11329
11330 #ifdef CONFIG_NL80211_TESTMODE
11331 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11332 {
11333         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11334         struct wireless_dev *wdev;
11335         int err;
11336
11337         lockdep_assert_held(&rdev->wiphy.mtx);
11338
11339         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11340                                           info->attrs);
11341
11342         if (!rdev->ops->testmode_cmd)
11343                 return -EOPNOTSUPP;
11344
11345         if (IS_ERR(wdev)) {
11346                 err = PTR_ERR(wdev);
11347                 if (err != -EINVAL)
11348                         return err;
11349                 wdev = NULL;
11350         } else if (wdev->wiphy != &rdev->wiphy) {
11351                 return -EINVAL;
11352         }
11353
11354         if (!info->attrs[NL80211_ATTR_TESTDATA])
11355                 return -EINVAL;
11356
11357         rdev->cur_cmd_info = info;
11358         err = rdev_testmode_cmd(rdev, wdev,
11359                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11360                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11361         rdev->cur_cmd_info = NULL;
11362
11363         return err;
11364 }
11365
11366 static int nl80211_testmode_dump(struct sk_buff *skb,
11367                                  struct netlink_callback *cb)
11368 {
11369         struct cfg80211_registered_device *rdev;
11370         struct nlattr **attrbuf = NULL;
11371         int err;
11372         long phy_idx;
11373         void *data = NULL;
11374         int data_len = 0;
11375
11376         rtnl_lock();
11377
11378         if (cb->args[0]) {
11379                 /*
11380                  * 0 is a valid index, but not valid for args[0],
11381                  * so we need to offset by 1.
11382                  */
11383                 phy_idx = cb->args[0] - 1;
11384
11385                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11386                 if (!rdev) {
11387                         err = -ENOENT;
11388                         goto out_err;
11389                 }
11390         } else {
11391                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11392                                   GFP_KERNEL);
11393                 if (!attrbuf) {
11394                         err = -ENOMEM;
11395                         goto out_err;
11396                 }
11397
11398                 err = nlmsg_parse_deprecated(cb->nlh,
11399                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11400                                              attrbuf, nl80211_fam.maxattr,
11401                                              nl80211_policy, NULL);
11402                 if (err)
11403                         goto out_err;
11404
11405                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11406                 if (IS_ERR(rdev)) {
11407                         err = PTR_ERR(rdev);
11408                         goto out_err;
11409                 }
11410                 phy_idx = rdev->wiphy_idx;
11411
11412                 if (attrbuf[NL80211_ATTR_TESTDATA])
11413                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11414         }
11415
11416         if (cb->args[1]) {
11417                 data = nla_data((void *)cb->args[1]);
11418                 data_len = nla_len((void *)cb->args[1]);
11419         }
11420
11421         if (!rdev->ops->testmode_dump) {
11422                 err = -EOPNOTSUPP;
11423                 goto out_err;
11424         }
11425
11426         while (1) {
11427                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11428                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11429                                            NL80211_CMD_TESTMODE);
11430                 struct nlattr *tmdata;
11431
11432                 if (!hdr)
11433                         break;
11434
11435                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11436                         genlmsg_cancel(skb, hdr);
11437                         break;
11438                 }
11439
11440                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11441                 if (!tmdata) {
11442                         genlmsg_cancel(skb, hdr);
11443                         break;
11444                 }
11445                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11446                 nla_nest_end(skb, tmdata);
11447
11448                 if (err == -ENOBUFS || err == -ENOENT) {
11449                         genlmsg_cancel(skb, hdr);
11450                         break;
11451                 } else if (err) {
11452                         genlmsg_cancel(skb, hdr);
11453                         goto out_err;
11454                 }
11455
11456                 genlmsg_end(skb, hdr);
11457         }
11458
11459         err = skb->len;
11460         /* see above */
11461         cb->args[0] = phy_idx + 1;
11462  out_err:
11463         kfree(attrbuf);
11464         rtnl_unlock();
11465         return err;
11466 }
11467 #endif
11468
11469 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11470 {
11471         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11472         struct net_device *dev = info->user_ptr[1];
11473         struct cfg80211_connect_params connect;
11474         struct wiphy *wiphy;
11475         struct cfg80211_cached_keys *connkeys = NULL;
11476         u32 freq = 0;
11477         int err;
11478
11479         memset(&connect, 0, sizeof(connect));
11480
11481         if (!info->attrs[NL80211_ATTR_SSID] ||
11482             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11483                 return -EINVAL;
11484
11485         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11486                 connect.auth_type =
11487                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11488                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11489                                              NL80211_CMD_CONNECT))
11490                         return -EINVAL;
11491         } else
11492                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11493
11494         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11495
11496         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11497             !wiphy_ext_feature_isset(&rdev->wiphy,
11498                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11499                 return -EINVAL;
11500         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11501
11502         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11503                                       NL80211_MAX_NR_CIPHER_SUITES);
11504         if (err)
11505                 return err;
11506
11507         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11508             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11509                 return -EOPNOTSUPP;
11510
11511         wiphy = &rdev->wiphy;
11512
11513         connect.bg_scan_period = -1;
11514         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11515                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11516                 connect.bg_scan_period =
11517                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11518         }
11519
11520         if (info->attrs[NL80211_ATTR_MAC])
11521                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11522         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11523                 connect.bssid_hint =
11524                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11525         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11526         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11527
11528         if (info->attrs[NL80211_ATTR_IE]) {
11529                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11530                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11531         }
11532
11533         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11534                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11535                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11536                     !wiphy_ext_feature_isset(&rdev->wiphy,
11537                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11538                         return -EOPNOTSUPP;
11539         } else {
11540                 connect.mfp = NL80211_MFP_NO;
11541         }
11542
11543         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11544                 connect.prev_bssid =
11545                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11546
11547         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11548                 freq = MHZ_TO_KHZ(nla_get_u32(
11549                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11550         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11551                 freq +=
11552                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11553
11554         if (freq) {
11555                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11556                 if (!connect.channel)
11557                         return -EINVAL;
11558         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11559                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11560                 freq = MHZ_TO_KHZ(freq);
11561                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11562                 if (!connect.channel_hint)
11563                         return -EINVAL;
11564         }
11565
11566         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11567                 connect.edmg.channels =
11568                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11569
11570                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11571                         connect.edmg.bw_config =
11572                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11573         }
11574
11575         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11576                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11577                 if (IS_ERR(connkeys))
11578                         return PTR_ERR(connkeys);
11579         }
11580
11581         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11582                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11583
11584         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11585                 memcpy(&connect.ht_capa_mask,
11586                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11587                        sizeof(connect.ht_capa_mask));
11588
11589         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11590                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11591                         kfree_sensitive(connkeys);
11592                         return -EINVAL;
11593                 }
11594                 memcpy(&connect.ht_capa,
11595                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11596                        sizeof(connect.ht_capa));
11597         }
11598
11599         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11600                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11601
11602         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11603                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11604
11605         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11606                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11607
11608         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11609                 memcpy(&connect.vht_capa_mask,
11610                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11611                        sizeof(connect.vht_capa_mask));
11612
11613         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11614                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11615                         kfree_sensitive(connkeys);
11616                         return -EINVAL;
11617                 }
11618                 memcpy(&connect.vht_capa,
11619                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11620                        sizeof(connect.vht_capa));
11621         }
11622
11623         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11624                 if (!((rdev->wiphy.features &
11625                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11626                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11627                     !wiphy_ext_feature_isset(&rdev->wiphy,
11628                                              NL80211_EXT_FEATURE_RRM)) {
11629                         kfree_sensitive(connkeys);
11630                         return -EINVAL;
11631                 }
11632                 connect.flags |= ASSOC_REQ_USE_RRM;
11633         }
11634
11635         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
11636         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
11637                 kfree_sensitive(connkeys);
11638                 return -EOPNOTSUPP;
11639         }
11640
11641         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
11642                 /* bss selection makes no sense if bssid is set */
11643                 if (connect.bssid) {
11644                         kfree_sensitive(connkeys);
11645                         return -EINVAL;
11646                 }
11647
11648                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
11649                                        wiphy, &connect.bss_select);
11650                 if (err) {
11651                         kfree_sensitive(connkeys);
11652                         return err;
11653                 }
11654         }
11655
11656         if (wiphy_ext_feature_isset(&rdev->wiphy,
11657                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
11658             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11659             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11660             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11661             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11662                 connect.fils_erp_username =
11663                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11664                 connect.fils_erp_username_len =
11665                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11666                 connect.fils_erp_realm =
11667                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11668                 connect.fils_erp_realm_len =
11669                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11670                 connect.fils_erp_next_seq_num =
11671                         nla_get_u16(
11672                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11673                 connect.fils_erp_rrk =
11674                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11675                 connect.fils_erp_rrk_len =
11676                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11677         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11678                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11679                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11680                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11681                 kfree_sensitive(connkeys);
11682                 return -EINVAL;
11683         }
11684
11685         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
11686                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11687                         kfree_sensitive(connkeys);
11688                         GENL_SET_ERR_MSG(info,
11689                                          "external auth requires connection ownership");
11690                         return -EINVAL;
11691                 }
11692                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
11693         }
11694
11695         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
11696                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
11697
11698         wdev_lock(dev->ieee80211_ptr);
11699
11700         err = cfg80211_connect(rdev, dev, &connect, connkeys,
11701                                connect.prev_bssid);
11702         if (err)
11703                 kfree_sensitive(connkeys);
11704
11705         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11706                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11707                 if (connect.bssid)
11708                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11709                                connect.bssid, ETH_ALEN);
11710                 else
11711                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
11712         }
11713
11714         wdev_unlock(dev->ieee80211_ptr);
11715
11716         return err;
11717 }
11718
11719 static int nl80211_update_connect_params(struct sk_buff *skb,
11720                                          struct genl_info *info)
11721 {
11722         struct cfg80211_connect_params connect = {};
11723         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11724         struct net_device *dev = info->user_ptr[1];
11725         struct wireless_dev *wdev = dev->ieee80211_ptr;
11726         bool fils_sk_offload;
11727         u32 auth_type;
11728         u32 changed = 0;
11729         int ret;
11730
11731         if (!rdev->ops->update_connect_params)
11732                 return -EOPNOTSUPP;
11733
11734         if (info->attrs[NL80211_ATTR_IE]) {
11735                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11736                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11737                 changed |= UPDATE_ASSOC_IES;
11738         }
11739
11740         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
11741                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
11742
11743         /*
11744          * when driver supports fils-sk offload all attributes must be
11745          * provided. So the else covers "fils-sk-not-all" and
11746          * "no-fils-sk-any".
11747          */
11748         if (fils_sk_offload &&
11749             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11750             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11751             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11752             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11753                 connect.fils_erp_username =
11754                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11755                 connect.fils_erp_username_len =
11756                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11757                 connect.fils_erp_realm =
11758                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11759                 connect.fils_erp_realm_len =
11760                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11761                 connect.fils_erp_next_seq_num =
11762                         nla_get_u16(
11763                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11764                 connect.fils_erp_rrk =
11765                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11766                 connect.fils_erp_rrk_len =
11767                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11768                 changed |= UPDATE_FILS_ERP_INFO;
11769         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11770                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11771                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11772                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11773                 return -EINVAL;
11774         }
11775
11776         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11777                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11778                 if (!nl80211_valid_auth_type(rdev, auth_type,
11779                                              NL80211_CMD_CONNECT))
11780                         return -EINVAL;
11781
11782                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11783                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11784                         return -EINVAL;
11785
11786                 connect.auth_type = auth_type;
11787                 changed |= UPDATE_AUTH_TYPE;
11788         }
11789
11790         wdev_lock(dev->ieee80211_ptr);
11791         if (!wdev->connected)
11792                 ret = -ENOLINK;
11793         else
11794                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11795         wdev_unlock(dev->ieee80211_ptr);
11796
11797         return ret;
11798 }
11799
11800 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11801 {
11802         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11803         struct net_device *dev = info->user_ptr[1];
11804         u16 reason;
11805         int ret;
11806
11807         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11808             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11809                 return -EPERM;
11810
11811         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11812                 reason = WLAN_REASON_DEAUTH_LEAVING;
11813         else
11814                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11815
11816         if (reason == 0)
11817                 return -EINVAL;
11818
11819         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11820             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11821                 return -EOPNOTSUPP;
11822
11823         wdev_lock(dev->ieee80211_ptr);
11824         ret = cfg80211_disconnect(rdev, dev, reason, true);
11825         wdev_unlock(dev->ieee80211_ptr);
11826         return ret;
11827 }
11828
11829 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11830 {
11831         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11832         struct net *net;
11833         int err;
11834
11835         if (info->attrs[NL80211_ATTR_PID]) {
11836                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11837
11838                 net = get_net_ns_by_pid(pid);
11839         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11840                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11841
11842                 net = get_net_ns_by_fd(fd);
11843         } else {
11844                 return -EINVAL;
11845         }
11846
11847         if (IS_ERR(net))
11848                 return PTR_ERR(net);
11849
11850         err = 0;
11851
11852         /* check if anything to do */
11853         if (!net_eq(wiphy_net(&rdev->wiphy), net))
11854                 err = cfg80211_switch_netns(rdev, net);
11855
11856         put_net(net);
11857         return err;
11858 }
11859
11860 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11861 {
11862         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11863         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11864                         struct cfg80211_pmksa *pmksa) = NULL;
11865         struct net_device *dev = info->user_ptr[1];
11866         struct cfg80211_pmksa pmksa;
11867
11868         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11869
11870         if (!info->attrs[NL80211_ATTR_PMKID])
11871                 return -EINVAL;
11872
11873         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11874
11875         if (info->attrs[NL80211_ATTR_MAC]) {
11876                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11877         } else if (info->attrs[NL80211_ATTR_SSID] &&
11878                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11879                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11880                     info->attrs[NL80211_ATTR_PMK])) {
11881                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11882                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11883                 pmksa.cache_id =
11884                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11885         } else {
11886                 return -EINVAL;
11887         }
11888         if (info->attrs[NL80211_ATTR_PMK]) {
11889                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11890                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11891         }
11892
11893         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11894                 pmksa.pmk_lifetime =
11895                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11896
11897         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11898                 pmksa.pmk_reauth_threshold =
11899                         nla_get_u8(
11900                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11901
11902         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11903             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
11904             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
11905               wiphy_ext_feature_isset(&rdev->wiphy,
11906                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
11907                 return -EOPNOTSUPP;
11908
11909         switch (info->genlhdr->cmd) {
11910         case NL80211_CMD_SET_PMKSA:
11911                 rdev_ops = rdev->ops->set_pmksa;
11912                 break;
11913         case NL80211_CMD_DEL_PMKSA:
11914                 rdev_ops = rdev->ops->del_pmksa;
11915                 break;
11916         default:
11917                 WARN_ON(1);
11918                 break;
11919         }
11920
11921         if (!rdev_ops)
11922                 return -EOPNOTSUPP;
11923
11924         return rdev_ops(&rdev->wiphy, dev, &pmksa);
11925 }
11926
11927 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
11928 {
11929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11930         struct net_device *dev = info->user_ptr[1];
11931
11932         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11933             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11934                 return -EOPNOTSUPP;
11935
11936         if (!rdev->ops->flush_pmksa)
11937                 return -EOPNOTSUPP;
11938
11939         return rdev_flush_pmksa(rdev, dev);
11940 }
11941
11942 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
11943 {
11944         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11945         struct net_device *dev = info->user_ptr[1];
11946         u8 action_code, dialog_token;
11947         u32 peer_capability = 0;
11948         u16 status_code;
11949         u8 *peer;
11950         bool initiator;
11951
11952         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11953             !rdev->ops->tdls_mgmt)
11954                 return -EOPNOTSUPP;
11955
11956         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
11957             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
11958             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
11959             !info->attrs[NL80211_ATTR_IE] ||
11960             !info->attrs[NL80211_ATTR_MAC])
11961                 return -EINVAL;
11962
11963         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11964         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
11965         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
11966         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
11967         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
11968         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
11969                 peer_capability =
11970                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
11971
11972         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
11973                               dialog_token, status_code, peer_capability,
11974                               initiator,
11975                               nla_data(info->attrs[NL80211_ATTR_IE]),
11976                               nla_len(info->attrs[NL80211_ATTR_IE]));
11977 }
11978
11979 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
11980 {
11981         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11982         struct net_device *dev = info->user_ptr[1];
11983         enum nl80211_tdls_operation operation;
11984         u8 *peer;
11985
11986         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11987             !rdev->ops->tdls_oper)
11988                 return -EOPNOTSUPP;
11989
11990         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
11991             !info->attrs[NL80211_ATTR_MAC])
11992                 return -EINVAL;
11993
11994         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
11995         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11996
11997         return rdev_tdls_oper(rdev, dev, peer, operation);
11998 }
11999
12000 static int nl80211_remain_on_channel(struct sk_buff *skb,
12001                                      struct genl_info *info)
12002 {
12003         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12004         unsigned int link_id = nl80211_link_id(info->attrs);
12005         struct wireless_dev *wdev = info->user_ptr[1];
12006         struct cfg80211_chan_def chandef;
12007         struct sk_buff *msg;
12008         void *hdr;
12009         u64 cookie;
12010         u32 duration;
12011         int err;
12012
12013         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12014             !info->attrs[NL80211_ATTR_DURATION])
12015                 return -EINVAL;
12016
12017         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12018
12019         if (!rdev->ops->remain_on_channel ||
12020             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12021                 return -EOPNOTSUPP;
12022
12023         /*
12024          * We should be on that channel for at least a minimum amount of
12025          * time (10ms) but no longer than the driver supports.
12026          */
12027         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12028             duration > rdev->wiphy.max_remain_on_channel_duration)
12029                 return -EINVAL;
12030
12031         err = nl80211_parse_chandef(rdev, info, &chandef);
12032         if (err)
12033                 return err;
12034
12035         wdev_lock(wdev);
12036         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12037                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12038
12039                 oper_chandef = wdev_chandef(wdev, link_id);
12040
12041                 if (WARN_ON(!oper_chandef)) {
12042                         /* cannot happen since we must beacon to get here */
12043                         WARN_ON(1);
12044                         wdev_unlock(wdev);
12045                         return -EBUSY;
12046                 }
12047
12048                 /* note: returns first one if identical chandefs */
12049                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12050                                                              oper_chandef);
12051
12052                 if (compat_chandef != &chandef) {
12053                         wdev_unlock(wdev);
12054                         return -EBUSY;
12055                 }
12056         }
12057         wdev_unlock(wdev);
12058
12059         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12060         if (!msg)
12061                 return -ENOMEM;
12062
12063         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12064                              NL80211_CMD_REMAIN_ON_CHANNEL);
12065         if (!hdr) {
12066                 err = -ENOBUFS;
12067                 goto free_msg;
12068         }
12069
12070         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12071                                      duration, &cookie);
12072
12073         if (err)
12074                 goto free_msg;
12075
12076         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12077                               NL80211_ATTR_PAD))
12078                 goto nla_put_failure;
12079
12080         genlmsg_end(msg, hdr);
12081
12082         return genlmsg_reply(msg, info);
12083
12084  nla_put_failure:
12085         err = -ENOBUFS;
12086  free_msg:
12087         nlmsg_free(msg);
12088         return err;
12089 }
12090
12091 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12092                                             struct genl_info *info)
12093 {
12094         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12095         struct wireless_dev *wdev = info->user_ptr[1];
12096         u64 cookie;
12097
12098         if (!info->attrs[NL80211_ATTR_COOKIE])
12099                 return -EINVAL;
12100
12101         if (!rdev->ops->cancel_remain_on_channel)
12102                 return -EOPNOTSUPP;
12103
12104         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12105
12106         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12107 }
12108
12109 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12110                                        struct genl_info *info)
12111 {
12112         struct cfg80211_bitrate_mask mask;
12113         unsigned int link_id = nl80211_link_id(info->attrs);
12114         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12115         struct net_device *dev = info->user_ptr[1];
12116         struct wireless_dev *wdev = dev->ieee80211_ptr;
12117         int err;
12118
12119         if (!rdev->ops->set_bitrate_mask)
12120                 return -EOPNOTSUPP;
12121
12122         wdev_lock(wdev);
12123         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12124                                             NL80211_ATTR_TX_RATES, &mask,
12125                                             dev, true, link_id);
12126         if (err)
12127                 goto out;
12128
12129         err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12130 out:
12131         wdev_unlock(wdev);
12132         return err;
12133 }
12134
12135 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12136 {
12137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12138         struct wireless_dev *wdev = info->user_ptr[1];
12139         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12140
12141         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12142                 return -EINVAL;
12143
12144         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12145                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12146
12147         switch (wdev->iftype) {
12148         case NL80211_IFTYPE_STATION:
12149         case NL80211_IFTYPE_ADHOC:
12150         case NL80211_IFTYPE_P2P_CLIENT:
12151         case NL80211_IFTYPE_AP:
12152         case NL80211_IFTYPE_AP_VLAN:
12153         case NL80211_IFTYPE_MESH_POINT:
12154         case NL80211_IFTYPE_P2P_GO:
12155         case NL80211_IFTYPE_P2P_DEVICE:
12156                 break;
12157         case NL80211_IFTYPE_NAN:
12158         default:
12159                 return -EOPNOTSUPP;
12160         }
12161
12162         /* not much point in registering if we can't reply */
12163         if (!rdev->ops->mgmt_tx)
12164                 return -EOPNOTSUPP;
12165
12166         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12167             !wiphy_ext_feature_isset(&rdev->wiphy,
12168                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12169                 GENL_SET_ERR_MSG(info,
12170                                  "multicast RX registrations are not supported");
12171                 return -EOPNOTSUPP;
12172         }
12173
12174         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12175                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12176                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12177                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12178                                            info->extack);
12179 }
12180
12181 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12182 {
12183         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12184         struct wireless_dev *wdev = info->user_ptr[1];
12185         struct cfg80211_chan_def chandef;
12186         int err;
12187         void *hdr = NULL;
12188         u64 cookie;
12189         struct sk_buff *msg = NULL;
12190         struct cfg80211_mgmt_tx_params params = {
12191                 .dont_wait_for_ack =
12192                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12193         };
12194
12195         if (!info->attrs[NL80211_ATTR_FRAME])
12196                 return -EINVAL;
12197
12198         if (!rdev->ops->mgmt_tx)
12199                 return -EOPNOTSUPP;
12200
12201         switch (wdev->iftype) {
12202         case NL80211_IFTYPE_P2P_DEVICE:
12203                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12204                         return -EINVAL;
12205                 break;
12206         case NL80211_IFTYPE_STATION:
12207         case NL80211_IFTYPE_ADHOC:
12208         case NL80211_IFTYPE_P2P_CLIENT:
12209         case NL80211_IFTYPE_AP:
12210         case NL80211_IFTYPE_AP_VLAN:
12211         case NL80211_IFTYPE_MESH_POINT:
12212         case NL80211_IFTYPE_P2P_GO:
12213                 break;
12214         case NL80211_IFTYPE_NAN:
12215         default:
12216                 return -EOPNOTSUPP;
12217         }
12218
12219         if (info->attrs[NL80211_ATTR_DURATION]) {
12220                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12221                         return -EINVAL;
12222                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12223
12224                 /*
12225                  * We should wait on the channel for at least a minimum amount
12226                  * of time (10ms) but no longer than the driver supports.
12227                  */
12228                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12229                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12230                         return -EINVAL;
12231         }
12232
12233         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12234
12235         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12236                 return -EINVAL;
12237
12238         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12239
12240         /* get the channel if any has been specified, otherwise pass NULL to
12241          * the driver. The latter will use the current one
12242          */
12243         chandef.chan = NULL;
12244         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12245                 err = nl80211_parse_chandef(rdev, info, &chandef);
12246                 if (err)
12247                         return err;
12248         }
12249
12250         if (!chandef.chan && params.offchan)
12251                 return -EINVAL;
12252
12253         wdev_lock(wdev);
12254         if (params.offchan &&
12255             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12256                 wdev_unlock(wdev);
12257                 return -EBUSY;
12258         }
12259
12260         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12261         /*
12262          * This now races due to the unlock, but we cannot check
12263          * the valid links for the _station_ anyway, so that's up
12264          * to the driver.
12265          */
12266         if (params.link_id >= 0 &&
12267             !(wdev->valid_links & BIT(params.link_id))) {
12268                 wdev_unlock(wdev);
12269                 return -EINVAL;
12270         }
12271         wdev_unlock(wdev);
12272
12273         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12274         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12275
12276         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12277                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12278                 int i;
12279
12280                 if (len % sizeof(u16))
12281                         return -EINVAL;
12282
12283                 params.n_csa_offsets = len / sizeof(u16);
12284                 params.csa_offsets =
12285                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12286
12287                 /* check that all the offsets fit the frame */
12288                 for (i = 0; i < params.n_csa_offsets; i++) {
12289                         if (params.csa_offsets[i] >= params.len)
12290                                 return -EINVAL;
12291                 }
12292         }
12293
12294         if (!params.dont_wait_for_ack) {
12295                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12296                 if (!msg)
12297                         return -ENOMEM;
12298
12299                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12300                                      NL80211_CMD_FRAME);
12301                 if (!hdr) {
12302                         err = -ENOBUFS;
12303                         goto free_msg;
12304                 }
12305         }
12306
12307         params.chan = chandef.chan;
12308         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12309         if (err)
12310                 goto free_msg;
12311
12312         if (msg) {
12313                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12314                                       NL80211_ATTR_PAD))
12315                         goto nla_put_failure;
12316
12317                 genlmsg_end(msg, hdr);
12318                 return genlmsg_reply(msg, info);
12319         }
12320
12321         return 0;
12322
12323  nla_put_failure:
12324         err = -ENOBUFS;
12325  free_msg:
12326         nlmsg_free(msg);
12327         return err;
12328 }
12329
12330 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12331 {
12332         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12333         struct wireless_dev *wdev = info->user_ptr[1];
12334         u64 cookie;
12335
12336         if (!info->attrs[NL80211_ATTR_COOKIE])
12337                 return -EINVAL;
12338
12339         if (!rdev->ops->mgmt_tx_cancel_wait)
12340                 return -EOPNOTSUPP;
12341
12342         switch (wdev->iftype) {
12343         case NL80211_IFTYPE_STATION:
12344         case NL80211_IFTYPE_ADHOC:
12345         case NL80211_IFTYPE_P2P_CLIENT:
12346         case NL80211_IFTYPE_AP:
12347         case NL80211_IFTYPE_AP_VLAN:
12348         case NL80211_IFTYPE_P2P_GO:
12349         case NL80211_IFTYPE_P2P_DEVICE:
12350                 break;
12351         case NL80211_IFTYPE_NAN:
12352         default:
12353                 return -EOPNOTSUPP;
12354         }
12355
12356         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12357
12358         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12359 }
12360
12361 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12362 {
12363         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12364         struct wireless_dev *wdev;
12365         struct net_device *dev = info->user_ptr[1];
12366         u8 ps_state;
12367         bool state;
12368         int err;
12369
12370         if (!info->attrs[NL80211_ATTR_PS_STATE])
12371                 return -EINVAL;
12372
12373         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12374
12375         wdev = dev->ieee80211_ptr;
12376
12377         if (!rdev->ops->set_power_mgmt)
12378                 return -EOPNOTSUPP;
12379
12380         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12381
12382         if (state == wdev->ps)
12383                 return 0;
12384
12385         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12386         if (!err)
12387                 wdev->ps = state;
12388         return err;
12389 }
12390
12391 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12392 {
12393         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12394         enum nl80211_ps_state ps_state;
12395         struct wireless_dev *wdev;
12396         struct net_device *dev = info->user_ptr[1];
12397         struct sk_buff *msg;
12398         void *hdr;
12399         int err;
12400
12401         wdev = dev->ieee80211_ptr;
12402
12403         if (!rdev->ops->set_power_mgmt)
12404                 return -EOPNOTSUPP;
12405
12406         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12407         if (!msg)
12408                 return -ENOMEM;
12409
12410         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12411                              NL80211_CMD_GET_POWER_SAVE);
12412         if (!hdr) {
12413                 err = -ENOBUFS;
12414                 goto free_msg;
12415         }
12416
12417         if (wdev->ps)
12418                 ps_state = NL80211_PS_ENABLED;
12419         else
12420                 ps_state = NL80211_PS_DISABLED;
12421
12422         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12423                 goto nla_put_failure;
12424
12425         genlmsg_end(msg, hdr);
12426         return genlmsg_reply(msg, info);
12427
12428  nla_put_failure:
12429         err = -ENOBUFS;
12430  free_msg:
12431         nlmsg_free(msg);
12432         return err;
12433 }
12434
12435 static const struct nla_policy
12436 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12437         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12438         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12439         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12440         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12441         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12442         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12443         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12444 };
12445
12446 static int nl80211_set_cqm_txe(struct genl_info *info,
12447                                u32 rate, u32 pkts, u32 intvl)
12448 {
12449         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12450         struct net_device *dev = info->user_ptr[1];
12451         struct wireless_dev *wdev = dev->ieee80211_ptr;
12452
12453         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12454                 return -EINVAL;
12455
12456         if (!rdev->ops->set_cqm_txe_config)
12457                 return -EOPNOTSUPP;
12458
12459         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12460             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12461                 return -EOPNOTSUPP;
12462
12463         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12464 }
12465
12466 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12467                                     struct net_device *dev)
12468 {
12469         struct wireless_dev *wdev = dev->ieee80211_ptr;
12470         s32 last, low, high;
12471         u32 hyst;
12472         int i, n, low_index;
12473         int err;
12474
12475         /* RSSI reporting disabled? */
12476         if (!wdev->cqm_config)
12477                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12478
12479         /*
12480          * Obtain current RSSI value if possible, if not and no RSSI threshold
12481          * event has been received yet, we should receive an event after a
12482          * connection is established and enough beacons received to calculate
12483          * the average.
12484          */
12485         if (!wdev->cqm_config->last_rssi_event_value &&
12486             wdev->links[0].client.current_bss &&
12487             rdev->ops->get_station) {
12488                 struct station_info sinfo = {};
12489                 u8 *mac_addr;
12490
12491                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12492
12493                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12494                 if (err)
12495                         return err;
12496
12497                 cfg80211_sinfo_release_content(&sinfo);
12498                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12499                         wdev->cqm_config->last_rssi_event_value =
12500                                 (s8) sinfo.rx_beacon_signal_avg;
12501         }
12502
12503         last = wdev->cqm_config->last_rssi_event_value;
12504         hyst = wdev->cqm_config->rssi_hyst;
12505         n = wdev->cqm_config->n_rssi_thresholds;
12506
12507         for (i = 0; i < n; i++) {
12508                 i = array_index_nospec(i, n);
12509                 if (last < wdev->cqm_config->rssi_thresholds[i])
12510                         break;
12511         }
12512
12513         low_index = i - 1;
12514         if (low_index >= 0) {
12515                 low_index = array_index_nospec(low_index, n);
12516                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
12517         } else {
12518                 low = S32_MIN;
12519         }
12520         if (i < n) {
12521                 i = array_index_nospec(i, n);
12522                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
12523         } else {
12524                 high = S32_MAX;
12525         }
12526
12527         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12528 }
12529
12530 static int nl80211_set_cqm_rssi(struct genl_info *info,
12531                                 const s32 *thresholds, int n_thresholds,
12532                                 u32 hysteresis)
12533 {
12534         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12535         struct net_device *dev = info->user_ptr[1];
12536         struct wireless_dev *wdev = dev->ieee80211_ptr;
12537         int i, err;
12538         s32 prev = S32_MIN;
12539
12540         /* Check all values negative and sorted */
12541         for (i = 0; i < n_thresholds; i++) {
12542                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12543                         return -EINVAL;
12544
12545                 prev = thresholds[i];
12546         }
12547
12548         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12549             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12550                 return -EOPNOTSUPP;
12551
12552         wdev_lock(wdev);
12553         cfg80211_cqm_config_free(wdev);
12554         wdev_unlock(wdev);
12555
12556         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
12557                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
12558                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12559
12560                 return rdev_set_cqm_rssi_config(rdev, dev,
12561                                                 thresholds[0], hysteresis);
12562         }
12563
12564         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12565                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
12566                 return -EOPNOTSUPP;
12567
12568         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12569                 n_thresholds = 0;
12570
12571         wdev_lock(wdev);
12572         if (n_thresholds) {
12573                 struct cfg80211_cqm_config *cqm_config;
12574
12575                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12576                                                  n_thresholds),
12577                                      GFP_KERNEL);
12578                 if (!cqm_config) {
12579                         err = -ENOMEM;
12580                         goto unlock;
12581                 }
12582
12583                 cqm_config->rssi_hyst = hysteresis;
12584                 cqm_config->n_rssi_thresholds = n_thresholds;
12585                 memcpy(cqm_config->rssi_thresholds, thresholds,
12586                        flex_array_size(cqm_config, rssi_thresholds,
12587                                        n_thresholds));
12588
12589                 wdev->cqm_config = cqm_config;
12590         }
12591
12592         err = cfg80211_cqm_rssi_update(rdev, dev);
12593
12594 unlock:
12595         wdev_unlock(wdev);
12596
12597         return err;
12598 }
12599
12600 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
12601 {
12602         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
12603         struct nlattr *cqm;
12604         int err;
12605
12606         cqm = info->attrs[NL80211_ATTR_CQM];
12607         if (!cqm)
12608                 return -EINVAL;
12609
12610         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
12611                                           nl80211_attr_cqm_policy,
12612                                           info->extack);
12613         if (err)
12614                 return err;
12615
12616         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
12617             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
12618                 const s32 *thresholds =
12619                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12620                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12621                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
12622
12623                 if (len % 4)
12624                         return -EINVAL;
12625
12626                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
12627                                             hysteresis);
12628         }
12629
12630         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
12631             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
12632             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
12633                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
12634                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
12635                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
12636
12637                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
12638         }
12639
12640         return -EINVAL;
12641 }
12642
12643 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
12644 {
12645         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12646         struct net_device *dev = info->user_ptr[1];
12647         struct ocb_setup setup = {};
12648         int err;
12649
12650         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12651         if (err)
12652                 return err;
12653
12654         return cfg80211_join_ocb(rdev, dev, &setup);
12655 }
12656
12657 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
12658 {
12659         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12660         struct net_device *dev = info->user_ptr[1];
12661
12662         return cfg80211_leave_ocb(rdev, dev);
12663 }
12664
12665 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
12666 {
12667         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12668         struct net_device *dev = info->user_ptr[1];
12669         struct mesh_config cfg;
12670         struct mesh_setup setup;
12671         int err;
12672
12673         /* start with default */
12674         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
12675         memcpy(&setup, &default_mesh_setup, sizeof(setup));
12676
12677         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
12678                 /* and parse parameters if given */
12679                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
12680                 if (err)
12681                         return err;
12682         }
12683
12684         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
12685             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
12686                 return -EINVAL;
12687
12688         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
12689         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
12690
12691         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
12692             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
12693                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
12694                         return -EINVAL;
12695
12696         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
12697                 setup.beacon_interval =
12698                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
12699
12700                 err = cfg80211_validate_beacon_int(rdev,
12701                                                    NL80211_IFTYPE_MESH_POINT,
12702                                                    setup.beacon_interval);
12703                 if (err)
12704                         return err;
12705         }
12706
12707         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
12708                 setup.dtim_period =
12709                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
12710                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
12711                         return -EINVAL;
12712         }
12713
12714         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
12715                 /* parse additional setup parameters if given */
12716                 err = nl80211_parse_mesh_setup(info, &setup);
12717                 if (err)
12718                         return err;
12719         }
12720
12721         if (setup.user_mpm)
12722                 cfg.auto_open_plinks = false;
12723
12724         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12725                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12726                 if (err)
12727                         return err;
12728         } else {
12729                 /* __cfg80211_join_mesh() will sort it out */
12730                 setup.chandef.chan = NULL;
12731         }
12732
12733         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
12734                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12735                 int n_rates =
12736                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12737                 struct ieee80211_supported_band *sband;
12738
12739                 if (!setup.chandef.chan)
12740                         return -EINVAL;
12741
12742                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
12743
12744                 err = ieee80211_get_ratemask(sband, rates, n_rates,
12745                                              &setup.basic_rates);
12746                 if (err)
12747                         return err;
12748         }
12749
12750         if (info->attrs[NL80211_ATTR_TX_RATES]) {
12751                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12752                                                     NL80211_ATTR_TX_RATES,
12753                                                     &setup.beacon_rate,
12754                                                     dev, false, 0);
12755                 if (err)
12756                         return err;
12757
12758                 if (!setup.chandef.chan)
12759                         return -EINVAL;
12760
12761                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
12762                                               &setup.beacon_rate);
12763                 if (err)
12764                         return err;
12765         }
12766
12767         setup.userspace_handles_dfs =
12768                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
12769
12770         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
12771                 int r = validate_pae_over_nl80211(rdev, info);
12772
12773                 if (r < 0)
12774                         return r;
12775
12776                 setup.control_port_over_nl80211 = true;
12777         }
12778
12779         wdev_lock(dev->ieee80211_ptr);
12780         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
12781         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
12782                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12783         wdev_unlock(dev->ieee80211_ptr);
12784
12785         return err;
12786 }
12787
12788 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
12789 {
12790         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12791         struct net_device *dev = info->user_ptr[1];
12792
12793         return cfg80211_leave_mesh(rdev, dev);
12794 }
12795
12796 #ifdef CONFIG_PM
12797 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
12798                                         struct cfg80211_registered_device *rdev)
12799 {
12800         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
12801         struct nlattr *nl_pats, *nl_pat;
12802         int i, pat_len;
12803
12804         if (!wowlan->n_patterns)
12805                 return 0;
12806
12807         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
12808         if (!nl_pats)
12809                 return -ENOBUFS;
12810
12811         for (i = 0; i < wowlan->n_patterns; i++) {
12812                 nl_pat = nla_nest_start_noflag(msg, i + 1);
12813                 if (!nl_pat)
12814                         return -ENOBUFS;
12815                 pat_len = wowlan->patterns[i].pattern_len;
12816                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
12817                             wowlan->patterns[i].mask) ||
12818                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12819                             wowlan->patterns[i].pattern) ||
12820                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12821                                 wowlan->patterns[i].pkt_offset))
12822                         return -ENOBUFS;
12823                 nla_nest_end(msg, nl_pat);
12824         }
12825         nla_nest_end(msg, nl_pats);
12826
12827         return 0;
12828 }
12829
12830 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
12831                                    struct cfg80211_wowlan_tcp *tcp)
12832 {
12833         struct nlattr *nl_tcp;
12834
12835         if (!tcp)
12836                 return 0;
12837
12838         nl_tcp = nla_nest_start_noflag(msg,
12839                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12840         if (!nl_tcp)
12841                 return -ENOBUFS;
12842
12843         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12844             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12845             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12846             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12847             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12848             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12849                     tcp->payload_len, tcp->payload) ||
12850             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12851                         tcp->data_interval) ||
12852             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12853                     tcp->wake_len, tcp->wake_data) ||
12854             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12855                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12856                 return -ENOBUFS;
12857
12858         if (tcp->payload_seq.len &&
12859             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12860                     sizeof(tcp->payload_seq), &tcp->payload_seq))
12861                 return -ENOBUFS;
12862
12863         if (tcp->payload_tok.len &&
12864             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12865                     sizeof(tcp->payload_tok) + tcp->tokens_size,
12866                     &tcp->payload_tok))
12867                 return -ENOBUFS;
12868
12869         nla_nest_end(msg, nl_tcp);
12870
12871         return 0;
12872 }
12873
12874 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12875                                   struct cfg80211_sched_scan_request *req)
12876 {
12877         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12878         int i;
12879
12880         if (!req)
12881                 return 0;
12882
12883         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12884         if (!nd)
12885                 return -ENOBUFS;
12886
12887         if (req->n_scan_plans == 1 &&
12888             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12889                         req->scan_plans[0].interval * 1000))
12890                 return -ENOBUFS;
12891
12892         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12893                 return -ENOBUFS;
12894
12895         if (req->relative_rssi_set) {
12896                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12897
12898                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12899                                req->relative_rssi))
12900                         return -ENOBUFS;
12901
12902                 rssi_adjust.band = req->rssi_adjust.band;
12903                 rssi_adjust.delta = req->rssi_adjust.delta;
12904                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
12905                             sizeof(rssi_adjust), &rssi_adjust))
12906                         return -ENOBUFS;
12907         }
12908
12909         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12910         if (!freqs)
12911                 return -ENOBUFS;
12912
12913         for (i = 0; i < req->n_channels; i++) {
12914                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12915                         return -ENOBUFS;
12916         }
12917
12918         nla_nest_end(msg, freqs);
12919
12920         if (req->n_match_sets) {
12921                 matches = nla_nest_start_noflag(msg,
12922                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
12923                 if (!matches)
12924                         return -ENOBUFS;
12925
12926                 for (i = 0; i < req->n_match_sets; i++) {
12927                         match = nla_nest_start_noflag(msg, i);
12928                         if (!match)
12929                                 return -ENOBUFS;
12930
12931                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
12932                                     req->match_sets[i].ssid.ssid_len,
12933                                     req->match_sets[i].ssid.ssid))
12934                                 return -ENOBUFS;
12935                         nla_nest_end(msg, match);
12936                 }
12937                 nla_nest_end(msg, matches);
12938         }
12939
12940         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
12941         if (!scan_plans)
12942                 return -ENOBUFS;
12943
12944         for (i = 0; i < req->n_scan_plans; i++) {
12945                 scan_plan = nla_nest_start_noflag(msg, i + 1);
12946                 if (!scan_plan)
12947                         return -ENOBUFS;
12948
12949                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
12950                                 req->scan_plans[i].interval) ||
12951                     (req->scan_plans[i].iterations &&
12952                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
12953                                  req->scan_plans[i].iterations)))
12954                         return -ENOBUFS;
12955                 nla_nest_end(msg, scan_plan);
12956         }
12957         nla_nest_end(msg, scan_plans);
12958
12959         nla_nest_end(msg, nd);
12960
12961         return 0;
12962 }
12963
12964 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
12965 {
12966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12967         struct sk_buff *msg;
12968         void *hdr;
12969         u32 size = NLMSG_DEFAULT_SIZE;
12970
12971         if (!rdev->wiphy.wowlan)
12972                 return -EOPNOTSUPP;
12973
12974         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
12975                 /* adjust size to have room for all the data */
12976                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
12977                         rdev->wiphy.wowlan_config->tcp->payload_len +
12978                         rdev->wiphy.wowlan_config->tcp->wake_len +
12979                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
12980         }
12981
12982         msg = nlmsg_new(size, GFP_KERNEL);
12983         if (!msg)
12984                 return -ENOMEM;
12985
12986         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12987                              NL80211_CMD_GET_WOWLAN);
12988         if (!hdr)
12989                 goto nla_put_failure;
12990
12991         if (rdev->wiphy.wowlan_config) {
12992                 struct nlattr *nl_wowlan;
12993
12994                 nl_wowlan = nla_nest_start_noflag(msg,
12995                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
12996                 if (!nl_wowlan)
12997                         goto nla_put_failure;
12998
12999                 if ((rdev->wiphy.wowlan_config->any &&
13000                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13001                     (rdev->wiphy.wowlan_config->disconnect &&
13002                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13003                     (rdev->wiphy.wowlan_config->magic_pkt &&
13004                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13005                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13006                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13007                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13008                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13009                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13010                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13011                     (rdev->wiphy.wowlan_config->rfkill_release &&
13012                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13013                         goto nla_put_failure;
13014
13015                 if (nl80211_send_wowlan_patterns(msg, rdev))
13016                         goto nla_put_failure;
13017
13018                 if (nl80211_send_wowlan_tcp(msg,
13019                                             rdev->wiphy.wowlan_config->tcp))
13020                         goto nla_put_failure;
13021
13022                 if (nl80211_send_wowlan_nd(
13023                             msg,
13024                             rdev->wiphy.wowlan_config->nd_config))
13025                         goto nla_put_failure;
13026
13027                 nla_nest_end(msg, nl_wowlan);
13028         }
13029
13030         genlmsg_end(msg, hdr);
13031         return genlmsg_reply(msg, info);
13032
13033 nla_put_failure:
13034         nlmsg_free(msg);
13035         return -ENOBUFS;
13036 }
13037
13038 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13039                                     struct nlattr *attr,
13040                                     struct cfg80211_wowlan *trig)
13041 {
13042         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13043         struct cfg80211_wowlan_tcp *cfg;
13044         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13045         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13046         u32 size;
13047         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13048         int err, port;
13049
13050         if (!rdev->wiphy.wowlan->tcp)
13051                 return -EINVAL;
13052
13053         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13054                                           nl80211_wowlan_tcp_policy, NULL);
13055         if (err)
13056                 return err;
13057
13058         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13059             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13060             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13061             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13062             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13063             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13064             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13065             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13066                 return -EINVAL;
13067
13068         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13069         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13070                 return -EINVAL;
13071
13072         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13073                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13074             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13075                 return -EINVAL;
13076
13077         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13078         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13079                 return -EINVAL;
13080
13081         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13082         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13083                 return -EINVAL;
13084
13085         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13086                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13087
13088                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13089                 tokens_size = tokln - sizeof(*tok);
13090
13091                 if (!tok->len || tokens_size % tok->len)
13092                         return -EINVAL;
13093                 if (!rdev->wiphy.wowlan->tcp->tok)
13094                         return -EINVAL;
13095                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13096                         return -EINVAL;
13097                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13098                         return -EINVAL;
13099                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13100                         return -EINVAL;
13101                 if (tok->offset + tok->len > data_size)
13102                         return -EINVAL;
13103         }
13104
13105         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13106                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13107                 if (!rdev->wiphy.wowlan->tcp->seq)
13108                         return -EINVAL;
13109                 if (seq->len == 0 || seq->len > 4)
13110                         return -EINVAL;
13111                 if (seq->len + seq->offset > data_size)
13112                         return -EINVAL;
13113         }
13114
13115         size = sizeof(*cfg);
13116         size += data_size;
13117         size += wake_size + wake_mask_size;
13118         size += tokens_size;
13119
13120         cfg = kzalloc(size, GFP_KERNEL);
13121         if (!cfg)
13122                 return -ENOMEM;
13123         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13124         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13125         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13126                ETH_ALEN);
13127         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13128                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13129         else
13130                 port = 0;
13131 #ifdef CONFIG_INET
13132         /* allocate a socket and port for it and use it */
13133         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13134                             IPPROTO_TCP, &cfg->sock, 1);
13135         if (err) {
13136                 kfree(cfg);
13137                 return err;
13138         }
13139         if (inet_csk_get_port(cfg->sock->sk, port)) {
13140                 sock_release(cfg->sock);
13141                 kfree(cfg);
13142                 return -EADDRINUSE;
13143         }
13144         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13145 #else
13146         if (!port) {
13147                 kfree(cfg);
13148                 return -EINVAL;
13149         }
13150         cfg->src_port = port;
13151 #endif
13152
13153         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13154         cfg->payload_len = data_size;
13155         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13156         memcpy((void *)cfg->payload,
13157                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13158                data_size);
13159         if (seq)
13160                 cfg->payload_seq = *seq;
13161         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13162         cfg->wake_len = wake_size;
13163         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13164         memcpy((void *)cfg->wake_data,
13165                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13166                wake_size);
13167         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13168                          data_size + wake_size;
13169         memcpy((void *)cfg->wake_mask,
13170                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13171                wake_mask_size);
13172         if (tok) {
13173                 cfg->tokens_size = tokens_size;
13174                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
13175         }
13176
13177         trig->tcp = cfg;
13178
13179         return 0;
13180 }
13181
13182 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13183                                    const struct wiphy_wowlan_support *wowlan,
13184                                    struct nlattr *attr,
13185                                    struct cfg80211_wowlan *trig)
13186 {
13187         struct nlattr **tb;
13188         int err;
13189
13190         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13191         if (!tb)
13192                 return -ENOMEM;
13193
13194         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13195                 err = -EOPNOTSUPP;
13196                 goto out;
13197         }
13198
13199         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13200                                           nl80211_policy, NULL);
13201         if (err)
13202                 goto out;
13203
13204         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13205                                                    wowlan->max_nd_match_sets);
13206         err = PTR_ERR_OR_ZERO(trig->nd_config);
13207         if (err)
13208                 trig->nd_config = NULL;
13209
13210 out:
13211         kfree(tb);
13212         return err;
13213 }
13214
13215 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13216 {
13217         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13218         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13219         struct cfg80211_wowlan new_triggers = {};
13220         struct cfg80211_wowlan *ntrig;
13221         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13222         int err, i;
13223         bool prev_enabled = rdev->wiphy.wowlan_config;
13224         bool regular = false;
13225
13226         if (!wowlan)
13227                 return -EOPNOTSUPP;
13228
13229         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13230                 cfg80211_rdev_free_wowlan(rdev);
13231                 rdev->wiphy.wowlan_config = NULL;
13232                 goto set_wakeup;
13233         }
13234
13235         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13236                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13237                                           nl80211_wowlan_policy, info->extack);
13238         if (err)
13239                 return err;
13240
13241         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13242                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13243                         return -EINVAL;
13244                 new_triggers.any = true;
13245         }
13246
13247         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13248                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13249                         return -EINVAL;
13250                 new_triggers.disconnect = true;
13251                 regular = true;
13252         }
13253
13254         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13255                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13256                         return -EINVAL;
13257                 new_triggers.magic_pkt = true;
13258                 regular = true;
13259         }
13260
13261         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13262                 return -EINVAL;
13263
13264         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13265                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13266                         return -EINVAL;
13267                 new_triggers.gtk_rekey_failure = true;
13268                 regular = true;
13269         }
13270
13271         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13272                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13273                         return -EINVAL;
13274                 new_triggers.eap_identity_req = true;
13275                 regular = true;
13276         }
13277
13278         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13279                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13280                         return -EINVAL;
13281                 new_triggers.four_way_handshake = true;
13282                 regular = true;
13283         }
13284
13285         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13286                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13287                         return -EINVAL;
13288                 new_triggers.rfkill_release = true;
13289                 regular = true;
13290         }
13291
13292         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13293                 struct nlattr *pat;
13294                 int n_patterns = 0;
13295                 int rem, pat_len, mask_len, pkt_offset;
13296                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13297
13298                 regular = true;
13299
13300                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13301                                     rem)
13302                         n_patterns++;
13303                 if (n_patterns > wowlan->n_patterns)
13304                         return -EINVAL;
13305
13306                 new_triggers.patterns = kcalloc(n_patterns,
13307                                                 sizeof(new_triggers.patterns[0]),
13308                                                 GFP_KERNEL);
13309                 if (!new_triggers.patterns)
13310                         return -ENOMEM;
13311
13312                 new_triggers.n_patterns = n_patterns;
13313                 i = 0;
13314
13315                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13316                                     rem) {
13317                         u8 *mask_pat;
13318
13319                         err = nla_parse_nested_deprecated(pat_tb,
13320                                                           MAX_NL80211_PKTPAT,
13321                                                           pat,
13322                                                           nl80211_packet_pattern_policy,
13323                                                           info->extack);
13324                         if (err)
13325                                 goto error;
13326
13327                         err = -EINVAL;
13328                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13329                             !pat_tb[NL80211_PKTPAT_PATTERN])
13330                                 goto error;
13331                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13332                         mask_len = DIV_ROUND_UP(pat_len, 8);
13333                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13334                                 goto error;
13335                         if (pat_len > wowlan->pattern_max_len ||
13336                             pat_len < wowlan->pattern_min_len)
13337                                 goto error;
13338
13339                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13340                                 pkt_offset = 0;
13341                         else
13342                                 pkt_offset = nla_get_u32(
13343                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13344                         if (pkt_offset > wowlan->max_pkt_offset)
13345                                 goto error;
13346                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13347
13348                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13349                         if (!mask_pat) {
13350                                 err = -ENOMEM;
13351                                 goto error;
13352                         }
13353                         new_triggers.patterns[i].mask = mask_pat;
13354                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13355                                mask_len);
13356                         mask_pat += mask_len;
13357                         new_triggers.patterns[i].pattern = mask_pat;
13358                         new_triggers.patterns[i].pattern_len = pat_len;
13359                         memcpy(mask_pat,
13360                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13361                                pat_len);
13362                         i++;
13363                 }
13364         }
13365
13366         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13367                 regular = true;
13368                 err = nl80211_parse_wowlan_tcp(
13369                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13370                         &new_triggers);
13371                 if (err)
13372                         goto error;
13373         }
13374
13375         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13376                 regular = true;
13377                 err = nl80211_parse_wowlan_nd(
13378                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13379                         &new_triggers);
13380                 if (err)
13381                         goto error;
13382         }
13383
13384         /* The 'any' trigger means the device continues operating more or less
13385          * as in its normal operation mode and wakes up the host on most of the
13386          * normal interrupts (like packet RX, ...)
13387          * It therefore makes little sense to combine with the more constrained
13388          * wakeup trigger modes.
13389          */
13390         if (new_triggers.any && regular) {
13391                 err = -EINVAL;
13392                 goto error;
13393         }
13394
13395         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13396         if (!ntrig) {
13397                 err = -ENOMEM;
13398                 goto error;
13399         }
13400         cfg80211_rdev_free_wowlan(rdev);
13401         rdev->wiphy.wowlan_config = ntrig;
13402
13403  set_wakeup:
13404         if (rdev->ops->set_wakeup &&
13405             prev_enabled != !!rdev->wiphy.wowlan_config)
13406                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13407
13408         return 0;
13409  error:
13410         for (i = 0; i < new_triggers.n_patterns; i++)
13411                 kfree(new_triggers.patterns[i].mask);
13412         kfree(new_triggers.patterns);
13413         if (new_triggers.tcp && new_triggers.tcp->sock)
13414                 sock_release(new_triggers.tcp->sock);
13415         kfree(new_triggers.tcp);
13416         kfree(new_triggers.nd_config);
13417         return err;
13418 }
13419 #endif
13420
13421 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13422                                        struct cfg80211_registered_device *rdev)
13423 {
13424         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13425         int i, j, pat_len;
13426         struct cfg80211_coalesce_rules *rule;
13427
13428         if (!rdev->coalesce->n_rules)
13429                 return 0;
13430
13431         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13432         if (!nl_rules)
13433                 return -ENOBUFS;
13434
13435         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13436                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13437                 if (!nl_rule)
13438                         return -ENOBUFS;
13439
13440                 rule = &rdev->coalesce->rules[i];
13441                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13442                                 rule->delay))
13443                         return -ENOBUFS;
13444
13445                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13446                                 rule->condition))
13447                         return -ENOBUFS;
13448
13449                 nl_pats = nla_nest_start_noflag(msg,
13450                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13451                 if (!nl_pats)
13452                         return -ENOBUFS;
13453
13454                 for (j = 0; j < rule->n_patterns; j++) {
13455                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13456                         if (!nl_pat)
13457                                 return -ENOBUFS;
13458                         pat_len = rule->patterns[j].pattern_len;
13459                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13460                                     DIV_ROUND_UP(pat_len, 8),
13461                                     rule->patterns[j].mask) ||
13462                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13463                                     rule->patterns[j].pattern) ||
13464                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13465                                         rule->patterns[j].pkt_offset))
13466                                 return -ENOBUFS;
13467                         nla_nest_end(msg, nl_pat);
13468                 }
13469                 nla_nest_end(msg, nl_pats);
13470                 nla_nest_end(msg, nl_rule);
13471         }
13472         nla_nest_end(msg, nl_rules);
13473
13474         return 0;
13475 }
13476
13477 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13478 {
13479         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13480         struct sk_buff *msg;
13481         void *hdr;
13482
13483         if (!rdev->wiphy.coalesce)
13484                 return -EOPNOTSUPP;
13485
13486         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13487         if (!msg)
13488                 return -ENOMEM;
13489
13490         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13491                              NL80211_CMD_GET_COALESCE);
13492         if (!hdr)
13493                 goto nla_put_failure;
13494
13495         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13496                 goto nla_put_failure;
13497
13498         genlmsg_end(msg, hdr);
13499         return genlmsg_reply(msg, info);
13500
13501 nla_put_failure:
13502         nlmsg_free(msg);
13503         return -ENOBUFS;
13504 }
13505
13506 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13507 {
13508         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13509         int i, j;
13510         struct cfg80211_coalesce_rules *rule;
13511
13512         if (!coalesce)
13513                 return;
13514
13515         for (i = 0; i < coalesce->n_rules; i++) {
13516                 rule = &coalesce->rules[i];
13517                 for (j = 0; j < rule->n_patterns; j++)
13518                         kfree(rule->patterns[j].mask);
13519                 kfree(rule->patterns);
13520         }
13521         kfree(coalesce->rules);
13522         kfree(coalesce);
13523         rdev->coalesce = NULL;
13524 }
13525
13526 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13527                                        struct nlattr *rule,
13528                                        struct cfg80211_coalesce_rules *new_rule)
13529 {
13530         int err, i;
13531         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13532         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13533         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13534         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13535
13536         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13537                                           rule, nl80211_coalesce_policy, NULL);
13538         if (err)
13539                 return err;
13540
13541         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13542                 new_rule->delay =
13543                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13544         if (new_rule->delay > coalesce->max_delay)
13545                 return -EINVAL;
13546
13547         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13548                 new_rule->condition =
13549                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13550
13551         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13552                 return -EINVAL;
13553
13554         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13555                             rem)
13556                 n_patterns++;
13557         if (n_patterns > coalesce->n_patterns)
13558                 return -EINVAL;
13559
13560         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13561                                      GFP_KERNEL);
13562         if (!new_rule->patterns)
13563                 return -ENOMEM;
13564
13565         new_rule->n_patterns = n_patterns;
13566         i = 0;
13567
13568         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13569                             rem) {
13570                 u8 *mask_pat;
13571
13572                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13573                                                   pat,
13574                                                   nl80211_packet_pattern_policy,
13575                                                   NULL);
13576                 if (err)
13577                         return err;
13578
13579                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13580                     !pat_tb[NL80211_PKTPAT_PATTERN])
13581                         return -EINVAL;
13582                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13583                 mask_len = DIV_ROUND_UP(pat_len, 8);
13584                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13585                         return -EINVAL;
13586                 if (pat_len > coalesce->pattern_max_len ||
13587                     pat_len < coalesce->pattern_min_len)
13588                         return -EINVAL;
13589
13590                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13591                         pkt_offset = 0;
13592                 else
13593                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13594                 if (pkt_offset > coalesce->max_pkt_offset)
13595                         return -EINVAL;
13596                 new_rule->patterns[i].pkt_offset = pkt_offset;
13597
13598                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13599                 if (!mask_pat)
13600                         return -ENOMEM;
13601
13602                 new_rule->patterns[i].mask = mask_pat;
13603                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13604                        mask_len);
13605
13606                 mask_pat += mask_len;
13607                 new_rule->patterns[i].pattern = mask_pat;
13608                 new_rule->patterns[i].pattern_len = pat_len;
13609                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13610                        pat_len);
13611                 i++;
13612         }
13613
13614         return 0;
13615 }
13616
13617 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
13618 {
13619         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13620         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13621         struct cfg80211_coalesce new_coalesce = {};
13622         struct cfg80211_coalesce *n_coalesce;
13623         int err, rem_rule, n_rules = 0, i, j;
13624         struct nlattr *rule;
13625         struct cfg80211_coalesce_rules *tmp_rule;
13626
13627         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
13628                 return -EOPNOTSUPP;
13629
13630         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
13631                 cfg80211_rdev_free_coalesce(rdev);
13632                 rdev_set_coalesce(rdev, NULL);
13633                 return 0;
13634         }
13635
13636         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13637                             rem_rule)
13638                 n_rules++;
13639         if (n_rules > coalesce->n_rules)
13640                 return -EINVAL;
13641
13642         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
13643                                      GFP_KERNEL);
13644         if (!new_coalesce.rules)
13645                 return -ENOMEM;
13646
13647         new_coalesce.n_rules = n_rules;
13648         i = 0;
13649
13650         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13651                             rem_rule) {
13652                 err = nl80211_parse_coalesce_rule(rdev, rule,
13653                                                   &new_coalesce.rules[i]);
13654                 if (err)
13655                         goto error;
13656
13657                 i++;
13658         }
13659
13660         err = rdev_set_coalesce(rdev, &new_coalesce);
13661         if (err)
13662                 goto error;
13663
13664         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
13665         if (!n_coalesce) {
13666                 err = -ENOMEM;
13667                 goto error;
13668         }
13669         cfg80211_rdev_free_coalesce(rdev);
13670         rdev->coalesce = n_coalesce;
13671
13672         return 0;
13673 error:
13674         for (i = 0; i < new_coalesce.n_rules; i++) {
13675                 tmp_rule = &new_coalesce.rules[i];
13676                 for (j = 0; j < tmp_rule->n_patterns; j++)
13677                         kfree(tmp_rule->patterns[j].mask);
13678                 kfree(tmp_rule->patterns);
13679         }
13680         kfree(new_coalesce.rules);
13681
13682         return err;
13683 }
13684
13685 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
13686 {
13687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13688         struct net_device *dev = info->user_ptr[1];
13689         struct wireless_dev *wdev = dev->ieee80211_ptr;
13690         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
13691         struct cfg80211_gtk_rekey_data rekey_data = {};
13692         int err;
13693
13694         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
13695                 return -EINVAL;
13696
13697         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
13698                                           info->attrs[NL80211_ATTR_REKEY_DATA],
13699                                           nl80211_rekey_policy, info->extack);
13700         if (err)
13701                 return err;
13702
13703         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
13704             !tb[NL80211_REKEY_DATA_KCK])
13705                 return -EINVAL;
13706         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
13707             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13708               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
13709                 return -ERANGE;
13710         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
13711             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13712               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
13713                 return -ERANGE;
13714
13715         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
13716         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
13717         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
13718         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
13719         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
13720         if (tb[NL80211_REKEY_DATA_AKM])
13721                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
13722
13723         wdev_lock(wdev);
13724         if (!wdev->connected) {
13725                 err = -ENOTCONN;
13726                 goto out;
13727         }
13728
13729         if (!rdev->ops->set_rekey_data) {
13730                 err = -EOPNOTSUPP;
13731                 goto out;
13732         }
13733
13734         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
13735  out:
13736         wdev_unlock(wdev);
13737         return err;
13738 }
13739
13740 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
13741                                              struct genl_info *info)
13742 {
13743         struct net_device *dev = info->user_ptr[1];
13744         struct wireless_dev *wdev = dev->ieee80211_ptr;
13745
13746         if (wdev->iftype != NL80211_IFTYPE_AP &&
13747             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13748                 return -EINVAL;
13749
13750         if (wdev->ap_unexpected_nlportid)
13751                 return -EBUSY;
13752
13753         wdev->ap_unexpected_nlportid = info->snd_portid;
13754         return 0;
13755 }
13756
13757 static int nl80211_probe_client(struct sk_buff *skb,
13758                                 struct genl_info *info)
13759 {
13760         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13761         struct net_device *dev = info->user_ptr[1];
13762         struct wireless_dev *wdev = dev->ieee80211_ptr;
13763         struct sk_buff *msg;
13764         void *hdr;
13765         const u8 *addr;
13766         u64 cookie;
13767         int err;
13768
13769         if (wdev->iftype != NL80211_IFTYPE_AP &&
13770             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13771                 return -EOPNOTSUPP;
13772
13773         if (!info->attrs[NL80211_ATTR_MAC])
13774                 return -EINVAL;
13775
13776         if (!rdev->ops->probe_client)
13777                 return -EOPNOTSUPP;
13778
13779         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13780         if (!msg)
13781                 return -ENOMEM;
13782
13783         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13784                              NL80211_CMD_PROBE_CLIENT);
13785         if (!hdr) {
13786                 err = -ENOBUFS;
13787                 goto free_msg;
13788         }
13789
13790         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13791
13792         err = rdev_probe_client(rdev, dev, addr, &cookie);
13793         if (err)
13794                 goto free_msg;
13795
13796         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13797                               NL80211_ATTR_PAD))
13798                 goto nla_put_failure;
13799
13800         genlmsg_end(msg, hdr);
13801
13802         return genlmsg_reply(msg, info);
13803
13804  nla_put_failure:
13805         err = -ENOBUFS;
13806  free_msg:
13807         nlmsg_free(msg);
13808         return err;
13809 }
13810
13811 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
13812 {
13813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13814         struct cfg80211_beacon_registration *reg, *nreg;
13815         int rv;
13816
13817         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
13818                 return -EOPNOTSUPP;
13819
13820         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
13821         if (!nreg)
13822                 return -ENOMEM;
13823
13824         /* First, check if already registered. */
13825         spin_lock_bh(&rdev->beacon_registrations_lock);
13826         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13827                 if (reg->nlportid == info->snd_portid) {
13828                         rv = -EALREADY;
13829                         goto out_err;
13830                 }
13831         }
13832         /* Add it to the list */
13833         nreg->nlportid = info->snd_portid;
13834         list_add(&nreg->list, &rdev->beacon_registrations);
13835
13836         spin_unlock_bh(&rdev->beacon_registrations_lock);
13837
13838         return 0;
13839 out_err:
13840         spin_unlock_bh(&rdev->beacon_registrations_lock);
13841         kfree(nreg);
13842         return rv;
13843 }
13844
13845 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13846 {
13847         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13848         struct wireless_dev *wdev = info->user_ptr[1];
13849         int err;
13850
13851         if (!rdev->ops->start_p2p_device)
13852                 return -EOPNOTSUPP;
13853
13854         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13855                 return -EOPNOTSUPP;
13856
13857         if (wdev_running(wdev))
13858                 return 0;
13859
13860         if (rfkill_blocked(rdev->wiphy.rfkill))
13861                 return -ERFKILL;
13862
13863         err = rdev_start_p2p_device(rdev, wdev);
13864         if (err)
13865                 return err;
13866
13867         wdev->is_running = true;
13868         rdev->opencount++;
13869
13870         return 0;
13871 }
13872
13873 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13874 {
13875         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13876         struct wireless_dev *wdev = info->user_ptr[1];
13877
13878         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13879                 return -EOPNOTSUPP;
13880
13881         if (!rdev->ops->stop_p2p_device)
13882                 return -EOPNOTSUPP;
13883
13884         cfg80211_stop_p2p_device(rdev, wdev);
13885
13886         return 0;
13887 }
13888
13889 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13890 {
13891         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13892         struct wireless_dev *wdev = info->user_ptr[1];
13893         struct cfg80211_nan_conf conf = {};
13894         int err;
13895
13896         if (wdev->iftype != NL80211_IFTYPE_NAN)
13897                 return -EOPNOTSUPP;
13898
13899         if (wdev_running(wdev))
13900                 return -EEXIST;
13901
13902         if (rfkill_blocked(rdev->wiphy.rfkill))
13903                 return -ERFKILL;
13904
13905         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
13906                 return -EINVAL;
13907
13908         conf.master_pref =
13909                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13910
13911         if (info->attrs[NL80211_ATTR_BANDS]) {
13912                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13913
13914                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13915                         return -EOPNOTSUPP;
13916
13917                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13918                         return -EINVAL;
13919
13920                 conf.bands = bands;
13921         }
13922
13923         err = rdev_start_nan(rdev, wdev, &conf);
13924         if (err)
13925                 return err;
13926
13927         wdev->is_running = true;
13928         rdev->opencount++;
13929
13930         return 0;
13931 }
13932
13933 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
13934 {
13935         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13936         struct wireless_dev *wdev = info->user_ptr[1];
13937
13938         if (wdev->iftype != NL80211_IFTYPE_NAN)
13939                 return -EOPNOTSUPP;
13940
13941         cfg80211_stop_nan(rdev, wdev);
13942
13943         return 0;
13944 }
13945
13946 static int validate_nan_filter(struct nlattr *filter_attr)
13947 {
13948         struct nlattr *attr;
13949         int len = 0, n_entries = 0, rem;
13950
13951         nla_for_each_nested(attr, filter_attr, rem) {
13952                 len += nla_len(attr);
13953                 n_entries++;
13954         }
13955
13956         if (len >= U8_MAX)
13957                 return -EINVAL;
13958
13959         return n_entries;
13960 }
13961
13962 static int handle_nan_filter(struct nlattr *attr_filter,
13963                              struct cfg80211_nan_func *func,
13964                              bool tx)
13965 {
13966         struct nlattr *attr;
13967         int n_entries, rem, i;
13968         struct cfg80211_nan_func_filter *filter;
13969
13970         n_entries = validate_nan_filter(attr_filter);
13971         if (n_entries < 0)
13972                 return n_entries;
13973
13974         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
13975
13976         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
13977         if (!filter)
13978                 return -ENOMEM;
13979
13980         i = 0;
13981         nla_for_each_nested(attr, attr_filter, rem) {
13982                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
13983                 if (!filter[i].filter)
13984                         goto err;
13985
13986                 filter[i].len = nla_len(attr);
13987                 i++;
13988         }
13989         if (tx) {
13990                 func->num_tx_filters = n_entries;
13991                 func->tx_filters = filter;
13992         } else {
13993                 func->num_rx_filters = n_entries;
13994                 func->rx_filters = filter;
13995         }
13996
13997         return 0;
13998
13999 err:
14000         i = 0;
14001         nla_for_each_nested(attr, attr_filter, rem) {
14002                 kfree(filter[i].filter);
14003                 i++;
14004         }
14005         kfree(filter);
14006         return -ENOMEM;
14007 }
14008
14009 static int nl80211_nan_add_func(struct sk_buff *skb,
14010                                 struct genl_info *info)
14011 {
14012         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14013         struct wireless_dev *wdev = info->user_ptr[1];
14014         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14015         struct cfg80211_nan_func *func;
14016         struct sk_buff *msg = NULL;
14017         void *hdr = NULL;
14018         int err = 0;
14019
14020         if (wdev->iftype != NL80211_IFTYPE_NAN)
14021                 return -EOPNOTSUPP;
14022
14023         if (!wdev_running(wdev))
14024                 return -ENOTCONN;
14025
14026         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14027                 return -EINVAL;
14028
14029         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14030                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14031                                           nl80211_nan_func_policy,
14032                                           info->extack);
14033         if (err)
14034                 return err;
14035
14036         func = kzalloc(sizeof(*func), GFP_KERNEL);
14037         if (!func)
14038                 return -ENOMEM;
14039
14040         func->cookie = cfg80211_assign_cookie(rdev);
14041
14042         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14043                 err = -EINVAL;
14044                 goto out;
14045         }
14046
14047
14048         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14049
14050         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14051                 err = -EINVAL;
14052                 goto out;
14053         }
14054
14055         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14056                sizeof(func->service_id));
14057
14058         func->close_range =
14059                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14060
14061         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14062                 func->serv_spec_info_len =
14063                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14064                 func->serv_spec_info =
14065                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14066                                 func->serv_spec_info_len,
14067                                 GFP_KERNEL);
14068                 if (!func->serv_spec_info) {
14069                         err = -ENOMEM;
14070                         goto out;
14071                 }
14072         }
14073
14074         if (tb[NL80211_NAN_FUNC_TTL])
14075                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14076
14077         switch (func->type) {
14078         case NL80211_NAN_FUNC_PUBLISH:
14079                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14080                         err = -EINVAL;
14081                         goto out;
14082                 }
14083
14084                 func->publish_type =
14085                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14086                 func->publish_bcast =
14087                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14088
14089                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14090                         func->publish_bcast) {
14091                         err = -EINVAL;
14092                         goto out;
14093                 }
14094                 break;
14095         case NL80211_NAN_FUNC_SUBSCRIBE:
14096                 func->subscribe_active =
14097                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14098                 break;
14099         case NL80211_NAN_FUNC_FOLLOW_UP:
14100                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14101                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14102                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14103                         err = -EINVAL;
14104                         goto out;
14105                 }
14106
14107                 func->followup_id =
14108                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14109                 func->followup_reqid =
14110                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14111                 memcpy(func->followup_dest.addr,
14112                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14113                        sizeof(func->followup_dest.addr));
14114                 if (func->ttl) {
14115                         err = -EINVAL;
14116                         goto out;
14117                 }
14118                 break;
14119         default:
14120                 err = -EINVAL;
14121                 goto out;
14122         }
14123
14124         if (tb[NL80211_NAN_FUNC_SRF]) {
14125                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14126
14127                 err = nla_parse_nested_deprecated(srf_tb,
14128                                                   NL80211_NAN_SRF_ATTR_MAX,
14129                                                   tb[NL80211_NAN_FUNC_SRF],
14130                                                   nl80211_nan_srf_policy,
14131                                                   info->extack);
14132                 if (err)
14133                         goto out;
14134
14135                 func->srf_include =
14136                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14137
14138                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14139                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14140                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14141                                 err = -EINVAL;
14142                                 goto out;
14143                         }
14144
14145                         func->srf_bf_len =
14146                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14147                         func->srf_bf =
14148                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14149                                         func->srf_bf_len, GFP_KERNEL);
14150                         if (!func->srf_bf) {
14151                                 err = -ENOMEM;
14152                                 goto out;
14153                         }
14154
14155                         func->srf_bf_idx =
14156                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14157                 } else {
14158                         struct nlattr *attr, *mac_attr =
14159                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14160                         int n_entries, rem, i = 0;
14161
14162                         if (!mac_attr) {
14163                                 err = -EINVAL;
14164                                 goto out;
14165                         }
14166
14167                         n_entries = validate_acl_mac_addrs(mac_attr);
14168                         if (n_entries <= 0) {
14169                                 err = -EINVAL;
14170                                 goto out;
14171                         }
14172
14173                         func->srf_num_macs = n_entries;
14174                         func->srf_macs =
14175                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14176                                         GFP_KERNEL);
14177                         if (!func->srf_macs) {
14178                                 err = -ENOMEM;
14179                                 goto out;
14180                         }
14181
14182                         nla_for_each_nested(attr, mac_attr, rem)
14183                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14184                                        sizeof(*func->srf_macs));
14185                 }
14186         }
14187
14188         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14189                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14190                                         func, true);
14191                 if (err)
14192                         goto out;
14193         }
14194
14195         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14196                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14197                                         func, false);
14198                 if (err)
14199                         goto out;
14200         }
14201
14202         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14203         if (!msg) {
14204                 err = -ENOMEM;
14205                 goto out;
14206         }
14207
14208         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14209                              NL80211_CMD_ADD_NAN_FUNCTION);
14210         /* This can't really happen - we just allocated 4KB */
14211         if (WARN_ON(!hdr)) {
14212                 err = -ENOMEM;
14213                 goto out;
14214         }
14215
14216         err = rdev_add_nan_func(rdev, wdev, func);
14217 out:
14218         if (err < 0) {
14219                 cfg80211_free_nan_func(func);
14220                 nlmsg_free(msg);
14221                 return err;
14222         }
14223
14224         /* propagate the instance id and cookie to userspace  */
14225         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14226                               NL80211_ATTR_PAD))
14227                 goto nla_put_failure;
14228
14229         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14230         if (!func_attr)
14231                 goto nla_put_failure;
14232
14233         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14234                        func->instance_id))
14235                 goto nla_put_failure;
14236
14237         nla_nest_end(msg, func_attr);
14238
14239         genlmsg_end(msg, hdr);
14240         return genlmsg_reply(msg, info);
14241
14242 nla_put_failure:
14243         nlmsg_free(msg);
14244         return -ENOBUFS;
14245 }
14246
14247 static int nl80211_nan_del_func(struct sk_buff *skb,
14248                                struct genl_info *info)
14249 {
14250         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14251         struct wireless_dev *wdev = info->user_ptr[1];
14252         u64 cookie;
14253
14254         if (wdev->iftype != NL80211_IFTYPE_NAN)
14255                 return -EOPNOTSUPP;
14256
14257         if (!wdev_running(wdev))
14258                 return -ENOTCONN;
14259
14260         if (!info->attrs[NL80211_ATTR_COOKIE])
14261                 return -EINVAL;
14262
14263         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14264
14265         rdev_del_nan_func(rdev, wdev, cookie);
14266
14267         return 0;
14268 }
14269
14270 static int nl80211_nan_change_config(struct sk_buff *skb,
14271                                      struct genl_info *info)
14272 {
14273         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14274         struct wireless_dev *wdev = info->user_ptr[1];
14275         struct cfg80211_nan_conf conf = {};
14276         u32 changed = 0;
14277
14278         if (wdev->iftype != NL80211_IFTYPE_NAN)
14279                 return -EOPNOTSUPP;
14280
14281         if (!wdev_running(wdev))
14282                 return -ENOTCONN;
14283
14284         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14285                 conf.master_pref =
14286                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14287                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14288                         return -EINVAL;
14289
14290                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14291         }
14292
14293         if (info->attrs[NL80211_ATTR_BANDS]) {
14294                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14295
14296                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14297                         return -EOPNOTSUPP;
14298
14299                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14300                         return -EINVAL;
14301
14302                 conf.bands = bands;
14303                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14304         }
14305
14306         if (!changed)
14307                 return -EINVAL;
14308
14309         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14310 }
14311
14312 void cfg80211_nan_match(struct wireless_dev *wdev,
14313                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14314 {
14315         struct wiphy *wiphy = wdev->wiphy;
14316         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14317         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14318         struct sk_buff *msg;
14319         void *hdr;
14320
14321         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14322                 return;
14323
14324         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14325         if (!msg)
14326                 return;
14327
14328         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14329         if (!hdr) {
14330                 nlmsg_free(msg);
14331                 return;
14332         }
14333
14334         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14335             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14336                                          wdev->netdev->ifindex)) ||
14337             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14338                               NL80211_ATTR_PAD))
14339                 goto nla_put_failure;
14340
14341         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14342                               NL80211_ATTR_PAD) ||
14343             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14344                 goto nla_put_failure;
14345
14346         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14347         if (!match_attr)
14348                 goto nla_put_failure;
14349
14350         local_func_attr = nla_nest_start_noflag(msg,
14351                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14352         if (!local_func_attr)
14353                 goto nla_put_failure;
14354
14355         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14356                 goto nla_put_failure;
14357
14358         nla_nest_end(msg, local_func_attr);
14359
14360         peer_func_attr = nla_nest_start_noflag(msg,
14361                                                NL80211_NAN_MATCH_FUNC_PEER);
14362         if (!peer_func_attr)
14363                 goto nla_put_failure;
14364
14365         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14366             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14367                 goto nla_put_failure;
14368
14369         if (match->info && match->info_len &&
14370             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14371                     match->info))
14372                 goto nla_put_failure;
14373
14374         nla_nest_end(msg, peer_func_attr);
14375         nla_nest_end(msg, match_attr);
14376         genlmsg_end(msg, hdr);
14377
14378         if (!wdev->owner_nlportid)
14379                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14380                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14381         else
14382                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14383                                 wdev->owner_nlportid);
14384
14385         return;
14386
14387 nla_put_failure:
14388         nlmsg_free(msg);
14389 }
14390 EXPORT_SYMBOL(cfg80211_nan_match);
14391
14392 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14393                                   u8 inst_id,
14394                                   enum nl80211_nan_func_term_reason reason,
14395                                   u64 cookie, gfp_t gfp)
14396 {
14397         struct wiphy *wiphy = wdev->wiphy;
14398         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14399         struct sk_buff *msg;
14400         struct nlattr *func_attr;
14401         void *hdr;
14402
14403         if (WARN_ON(!inst_id))
14404                 return;
14405
14406         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14407         if (!msg)
14408                 return;
14409
14410         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14411         if (!hdr) {
14412                 nlmsg_free(msg);
14413                 return;
14414         }
14415
14416         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14417             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14418                                          wdev->netdev->ifindex)) ||
14419             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14420                               NL80211_ATTR_PAD))
14421                 goto nla_put_failure;
14422
14423         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14424                               NL80211_ATTR_PAD))
14425                 goto nla_put_failure;
14426
14427         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14428         if (!func_attr)
14429                 goto nla_put_failure;
14430
14431         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14432             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14433                 goto nla_put_failure;
14434
14435         nla_nest_end(msg, func_attr);
14436         genlmsg_end(msg, hdr);
14437
14438         if (!wdev->owner_nlportid)
14439                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14440                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14441         else
14442                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14443                                 wdev->owner_nlportid);
14444
14445         return;
14446
14447 nla_put_failure:
14448         nlmsg_free(msg);
14449 }
14450 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14451
14452 static int nl80211_get_protocol_features(struct sk_buff *skb,
14453                                          struct genl_info *info)
14454 {
14455         void *hdr;
14456         struct sk_buff *msg;
14457
14458         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14459         if (!msg)
14460                 return -ENOMEM;
14461
14462         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14463                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14464         if (!hdr)
14465                 goto nla_put_failure;
14466
14467         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14468                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14469                 goto nla_put_failure;
14470
14471         genlmsg_end(msg, hdr);
14472         return genlmsg_reply(msg, info);
14473
14474  nla_put_failure:
14475         kfree_skb(msg);
14476         return -ENOBUFS;
14477 }
14478
14479 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14480 {
14481         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14482         struct cfg80211_update_ft_ies_params ft_params;
14483         struct net_device *dev = info->user_ptr[1];
14484
14485         if (!rdev->ops->update_ft_ies)
14486                 return -EOPNOTSUPP;
14487
14488         if (!info->attrs[NL80211_ATTR_MDID] ||
14489             !info->attrs[NL80211_ATTR_IE])
14490                 return -EINVAL;
14491
14492         memset(&ft_params, 0, sizeof(ft_params));
14493         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14494         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14495         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14496
14497         return rdev_update_ft_ies(rdev, dev, &ft_params);
14498 }
14499
14500 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14501                                        struct genl_info *info)
14502 {
14503         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14504         struct wireless_dev *wdev = info->user_ptr[1];
14505         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14506         u16 duration;
14507         int ret;
14508
14509         if (!rdev->ops->crit_proto_start)
14510                 return -EOPNOTSUPP;
14511
14512         if (WARN_ON(!rdev->ops->crit_proto_stop))
14513                 return -EINVAL;
14514
14515         if (rdev->crit_proto_nlportid)
14516                 return -EBUSY;
14517
14518         /* determine protocol if provided */
14519         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14520                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14521
14522         if (proto >= NUM_NL80211_CRIT_PROTO)
14523                 return -EINVAL;
14524
14525         /* timeout must be provided */
14526         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14527                 return -EINVAL;
14528
14529         duration =
14530                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14531
14532         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14533         if (!ret)
14534                 rdev->crit_proto_nlportid = info->snd_portid;
14535
14536         return ret;
14537 }
14538
14539 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14540                                       struct genl_info *info)
14541 {
14542         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14543         struct wireless_dev *wdev = info->user_ptr[1];
14544
14545         if (!rdev->ops->crit_proto_stop)
14546                 return -EOPNOTSUPP;
14547
14548         if (rdev->crit_proto_nlportid) {
14549                 rdev->crit_proto_nlportid = 0;
14550                 rdev_crit_proto_stop(rdev, wdev);
14551         }
14552         return 0;
14553 }
14554
14555 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14556                                        struct nlattr *attr,
14557                                        struct netlink_ext_ack *extack)
14558 {
14559         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14560                 if (attr->nla_type & NLA_F_NESTED) {
14561                         NL_SET_ERR_MSG_ATTR(extack, attr,
14562                                             "unexpected nested data");
14563                         return -EINVAL;
14564                 }
14565
14566                 return 0;
14567         }
14568
14569         if (!(attr->nla_type & NLA_F_NESTED)) {
14570                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14571                 return -EINVAL;
14572         }
14573
14574         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14575 }
14576
14577 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14578 {
14579         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14580         struct wireless_dev *wdev =
14581                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14582                                            info->attrs);
14583         int i, err;
14584         u32 vid, subcmd;
14585
14586         if (!rdev->wiphy.vendor_commands)
14587                 return -EOPNOTSUPP;
14588
14589         if (IS_ERR(wdev)) {
14590                 err = PTR_ERR(wdev);
14591                 if (err != -EINVAL)
14592                         return err;
14593                 wdev = NULL;
14594         } else if (wdev->wiphy != &rdev->wiphy) {
14595                 return -EINVAL;
14596         }
14597
14598         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
14599             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
14600                 return -EINVAL;
14601
14602         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
14603         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
14604         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
14605                 const struct wiphy_vendor_command *vcmd;
14606                 void *data = NULL;
14607                 int len = 0;
14608
14609                 vcmd = &rdev->wiphy.vendor_commands[i];
14610
14611                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14612                         continue;
14613
14614                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14615                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14616                         if (!wdev)
14617                                 return -EINVAL;
14618                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14619                             !wdev->netdev)
14620                                 return -EINVAL;
14621
14622                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14623                                 if (!wdev_running(wdev))
14624                                         return -ENETDOWN;
14625                         }
14626                 } else {
14627                         wdev = NULL;
14628                 }
14629
14630                 if (!vcmd->doit)
14631                         return -EOPNOTSUPP;
14632
14633                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
14634                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14635                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14636
14637                         err = nl80211_vendor_check_policy(vcmd,
14638                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
14639                                         info->extack);
14640                         if (err)
14641                                 return err;
14642                 }
14643
14644                 rdev->cur_cmd_info = info;
14645                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
14646                 rdev->cur_cmd_info = NULL;
14647                 return err;
14648         }
14649
14650         return -EOPNOTSUPP;
14651 }
14652
14653 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
14654                                        struct netlink_callback *cb,
14655                                        struct cfg80211_registered_device **rdev,
14656                                        struct wireless_dev **wdev)
14657 {
14658         struct nlattr **attrbuf;
14659         u32 vid, subcmd;
14660         unsigned int i;
14661         int vcmd_idx = -1;
14662         int err;
14663         void *data = NULL;
14664         unsigned int data_len = 0;
14665
14666         if (cb->args[0]) {
14667                 /* subtract the 1 again here */
14668                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
14669                 struct wireless_dev *tmp;
14670
14671                 if (!wiphy)
14672                         return -ENODEV;
14673                 *rdev = wiphy_to_rdev(wiphy);
14674                 *wdev = NULL;
14675
14676                 if (cb->args[1]) {
14677                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
14678                                 if (tmp->identifier == cb->args[1] - 1) {
14679                                         *wdev = tmp;
14680                                         break;
14681                                 }
14682                         }
14683                 }
14684
14685                 /* keep rtnl locked in successful case */
14686                 return 0;
14687         }
14688
14689         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
14690         if (!attrbuf)
14691                 return -ENOMEM;
14692
14693         err = nlmsg_parse_deprecated(cb->nlh,
14694                                      GENL_HDRLEN + nl80211_fam.hdrsize,
14695                                      attrbuf, nl80211_fam.maxattr,
14696                                      nl80211_policy, NULL);
14697         if (err)
14698                 goto out;
14699
14700         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
14701             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
14702                 err = -EINVAL;
14703                 goto out;
14704         }
14705
14706         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
14707         if (IS_ERR(*wdev))
14708                 *wdev = NULL;
14709
14710         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
14711         if (IS_ERR(*rdev)) {
14712                 err = PTR_ERR(*rdev);
14713                 goto out;
14714         }
14715
14716         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
14717         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
14718
14719         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
14720                 const struct wiphy_vendor_command *vcmd;
14721
14722                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
14723
14724                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14725                         continue;
14726
14727                 if (!vcmd->dumpit) {
14728                         err = -EOPNOTSUPP;
14729                         goto out;
14730                 }
14731
14732                 vcmd_idx = i;
14733                 break;
14734         }
14735
14736         if (vcmd_idx < 0) {
14737                 err = -EOPNOTSUPP;
14738                 goto out;
14739         }
14740
14741         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
14742                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14743                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14744
14745                 err = nl80211_vendor_check_policy(
14746                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
14747                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
14748                                 cb->extack);
14749                 if (err)
14750                         goto out;
14751         }
14752
14753         /* 0 is the first index - add 1 to parse only once */
14754         cb->args[0] = (*rdev)->wiphy_idx + 1;
14755         /* add 1 to know if it was NULL */
14756         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
14757         cb->args[2] = vcmd_idx;
14758         cb->args[3] = (unsigned long)data;
14759         cb->args[4] = data_len;
14760
14761         /* keep rtnl locked in successful case */
14762         err = 0;
14763 out:
14764         kfree(attrbuf);
14765         return err;
14766 }
14767
14768 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
14769                                    struct netlink_callback *cb)
14770 {
14771         struct cfg80211_registered_device *rdev;
14772         struct wireless_dev *wdev;
14773         unsigned int vcmd_idx;
14774         const struct wiphy_vendor_command *vcmd;
14775         void *data;
14776         int data_len;
14777         int err;
14778         struct nlattr *vendor_data;
14779
14780         rtnl_lock();
14781         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
14782         if (err)
14783                 goto out;
14784
14785         vcmd_idx = cb->args[2];
14786         data = (void *)cb->args[3];
14787         data_len = cb->args[4];
14788         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
14789
14790         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14791                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14792                 if (!wdev) {
14793                         err = -EINVAL;
14794                         goto out;
14795                 }
14796                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14797                     !wdev->netdev) {
14798                         err = -EINVAL;
14799                         goto out;
14800                 }
14801
14802                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14803                         if (!wdev_running(wdev)) {
14804                                 err = -ENETDOWN;
14805                                 goto out;
14806                         }
14807                 }
14808         }
14809
14810         while (1) {
14811                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
14812                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
14813                                            NL80211_CMD_VENDOR);
14814                 if (!hdr)
14815                         break;
14816
14817                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14818                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
14819                                                wdev_id(wdev),
14820                                                NL80211_ATTR_PAD))) {
14821                         genlmsg_cancel(skb, hdr);
14822                         break;
14823                 }
14824
14825                 vendor_data = nla_nest_start_noflag(skb,
14826                                                     NL80211_ATTR_VENDOR_DATA);
14827                 if (!vendor_data) {
14828                         genlmsg_cancel(skb, hdr);
14829                         break;
14830                 }
14831
14832                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
14833                                    (unsigned long *)&cb->args[5]);
14834                 nla_nest_end(skb, vendor_data);
14835
14836                 if (err == -ENOBUFS || err == -ENOENT) {
14837                         genlmsg_cancel(skb, hdr);
14838                         break;
14839                 } else if (err <= 0) {
14840                         genlmsg_cancel(skb, hdr);
14841                         goto out;
14842                 }
14843
14844                 genlmsg_end(skb, hdr);
14845         }
14846
14847         err = skb->len;
14848  out:
14849         rtnl_unlock();
14850         return err;
14851 }
14852
14853 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14854                                            enum nl80211_commands cmd,
14855                                            enum nl80211_attrs attr,
14856                                            int approxlen)
14857 {
14858         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14859
14860         if (WARN_ON(!rdev->cur_cmd_info))
14861                 return NULL;
14862
14863         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14864                                            rdev->cur_cmd_info->snd_portid,
14865                                            rdev->cur_cmd_info->snd_seq,
14866                                            cmd, attr, NULL, GFP_KERNEL);
14867 }
14868 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14869
14870 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14871 {
14872         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14873         void *hdr = ((void **)skb->cb)[1];
14874         struct nlattr *data = ((void **)skb->cb)[2];
14875
14876         /* clear CB data for netlink core to own from now on */
14877         memset(skb->cb, 0, sizeof(skb->cb));
14878
14879         if (WARN_ON(!rdev->cur_cmd_info)) {
14880                 kfree_skb(skb);
14881                 return -EINVAL;
14882         }
14883
14884         nla_nest_end(skb, data);
14885         genlmsg_end(skb, hdr);
14886         return genlmsg_reply(skb, rdev->cur_cmd_info);
14887 }
14888 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14889
14890 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14891 {
14892         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14893
14894         if (WARN_ON(!rdev->cur_cmd_info))
14895                 return 0;
14896
14897         return rdev->cur_cmd_info->snd_portid;
14898 }
14899 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
14900
14901 static int nl80211_set_qos_map(struct sk_buff *skb,
14902                                struct genl_info *info)
14903 {
14904         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14905         struct cfg80211_qos_map *qos_map = NULL;
14906         struct net_device *dev = info->user_ptr[1];
14907         u8 *pos, len, num_des, des_len, des;
14908         int ret;
14909
14910         if (!rdev->ops->set_qos_map)
14911                 return -EOPNOTSUPP;
14912
14913         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
14914                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
14915                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
14916
14917                 if (len % 2)
14918                         return -EINVAL;
14919
14920                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
14921                 if (!qos_map)
14922                         return -ENOMEM;
14923
14924                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
14925                 if (num_des) {
14926                         des_len = num_des *
14927                                 sizeof(struct cfg80211_dscp_exception);
14928                         memcpy(qos_map->dscp_exception, pos, des_len);
14929                         qos_map->num_des = num_des;
14930                         for (des = 0; des < num_des; des++) {
14931                                 if (qos_map->dscp_exception[des].up > 7) {
14932                                         kfree(qos_map);
14933                                         return -EINVAL;
14934                                 }
14935                         }
14936                         pos += des_len;
14937                 }
14938                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
14939         }
14940
14941         wdev_lock(dev->ieee80211_ptr);
14942         ret = nl80211_key_allowed(dev->ieee80211_ptr);
14943         if (!ret)
14944                 ret = rdev_set_qos_map(rdev, dev, qos_map);
14945         wdev_unlock(dev->ieee80211_ptr);
14946
14947         kfree(qos_map);
14948         return ret;
14949 }
14950
14951 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
14952 {
14953         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14954         struct net_device *dev = info->user_ptr[1];
14955         struct wireless_dev *wdev = dev->ieee80211_ptr;
14956         const u8 *peer;
14957         u8 tsid, up;
14958         u16 admitted_time = 0;
14959         int err;
14960
14961         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
14962                 return -EOPNOTSUPP;
14963
14964         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
14965             !info->attrs[NL80211_ATTR_USER_PRIO])
14966                 return -EINVAL;
14967
14968         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14969         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
14970
14971         /* WMM uses TIDs 0-7 even for TSPEC */
14972         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
14973                 /* TODO: handle 802.11 TSPEC/admission control
14974                  * need more attributes for that (e.g. BA session requirement);
14975                  * change the WMM adminssion test above to allow both then
14976                  */
14977                 return -EINVAL;
14978         }
14979
14980         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14981
14982         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
14983                 admitted_time =
14984                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
14985                 if (!admitted_time)
14986                         return -EINVAL;
14987         }
14988
14989         wdev_lock(wdev);
14990         switch (wdev->iftype) {
14991         case NL80211_IFTYPE_STATION:
14992         case NL80211_IFTYPE_P2P_CLIENT:
14993                 if (wdev->connected)
14994                         break;
14995                 err = -ENOTCONN;
14996                 goto out;
14997         default:
14998                 err = -EOPNOTSUPP;
14999                 goto out;
15000         }
15001
15002         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15003
15004  out:
15005         wdev_unlock(wdev);
15006         return err;
15007 }
15008
15009 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15010 {
15011         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15012         struct net_device *dev = info->user_ptr[1];
15013         struct wireless_dev *wdev = dev->ieee80211_ptr;
15014         const u8 *peer;
15015         u8 tsid;
15016         int err;
15017
15018         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15019                 return -EINVAL;
15020
15021         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15022         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15023
15024         wdev_lock(wdev);
15025         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15026         wdev_unlock(wdev);
15027
15028         return err;
15029 }
15030
15031 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15032                                        struct genl_info *info)
15033 {
15034         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15035         struct net_device *dev = info->user_ptr[1];
15036         struct wireless_dev *wdev = dev->ieee80211_ptr;
15037         struct cfg80211_chan_def chandef = {};
15038         const u8 *addr;
15039         u8 oper_class;
15040         int err;
15041
15042         if (!rdev->ops->tdls_channel_switch ||
15043             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15044                 return -EOPNOTSUPP;
15045
15046         switch (dev->ieee80211_ptr->iftype) {
15047         case NL80211_IFTYPE_STATION:
15048         case NL80211_IFTYPE_P2P_CLIENT:
15049                 break;
15050         default:
15051                 return -EOPNOTSUPP;
15052         }
15053
15054         if (!info->attrs[NL80211_ATTR_MAC] ||
15055             !info->attrs[NL80211_ATTR_OPER_CLASS])
15056                 return -EINVAL;
15057
15058         err = nl80211_parse_chandef(rdev, info, &chandef);
15059         if (err)
15060                 return err;
15061
15062         /*
15063          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15064          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15065          * specification is not defined for them.
15066          */
15067         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15068             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15069             chandef.width != NL80211_CHAN_WIDTH_20)
15070                 return -EINVAL;
15071
15072         /* we will be active on the TDLS link */
15073         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15074                                            wdev->iftype))
15075                 return -EINVAL;
15076
15077         /* don't allow switching to DFS channels */
15078         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15079                 return -EINVAL;
15080
15081         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15082         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15083
15084         wdev_lock(wdev);
15085         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15086         wdev_unlock(wdev);
15087
15088         return err;
15089 }
15090
15091 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15092                                               struct genl_info *info)
15093 {
15094         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15095         struct net_device *dev = info->user_ptr[1];
15096         struct wireless_dev *wdev = dev->ieee80211_ptr;
15097         const u8 *addr;
15098
15099         if (!rdev->ops->tdls_channel_switch ||
15100             !rdev->ops->tdls_cancel_channel_switch ||
15101             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15102                 return -EOPNOTSUPP;
15103
15104         switch (dev->ieee80211_ptr->iftype) {
15105         case NL80211_IFTYPE_STATION:
15106         case NL80211_IFTYPE_P2P_CLIENT:
15107                 break;
15108         default:
15109                 return -EOPNOTSUPP;
15110         }
15111
15112         if (!info->attrs[NL80211_ATTR_MAC])
15113                 return -EINVAL;
15114
15115         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15116
15117         wdev_lock(wdev);
15118         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15119         wdev_unlock(wdev);
15120
15121         return 0;
15122 }
15123
15124 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15125                                             struct genl_info *info)
15126 {
15127         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15128         struct net_device *dev = info->user_ptr[1];
15129         struct wireless_dev *wdev = dev->ieee80211_ptr;
15130         const struct nlattr *nla;
15131         bool enabled;
15132
15133         if (!rdev->ops->set_multicast_to_unicast)
15134                 return -EOPNOTSUPP;
15135
15136         if (wdev->iftype != NL80211_IFTYPE_AP &&
15137             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15138                 return -EOPNOTSUPP;
15139
15140         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15141         enabled = nla_get_flag(nla);
15142
15143         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15144 }
15145
15146 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15147 {
15148         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15149         struct net_device *dev = info->user_ptr[1];
15150         struct wireless_dev *wdev = dev->ieee80211_ptr;
15151         struct cfg80211_pmk_conf pmk_conf = {};
15152         int ret;
15153
15154         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15155             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15156                 return -EOPNOTSUPP;
15157
15158         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15159                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15160                 return -EOPNOTSUPP;
15161
15162         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15163                 return -EINVAL;
15164
15165         wdev_lock(wdev);
15166         if (!wdev->connected) {
15167                 ret = -ENOTCONN;
15168                 goto out;
15169         }
15170
15171         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15172         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15173                 ret = -EINVAL;
15174                 goto out;
15175         }
15176
15177         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15178         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15179         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15180             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15181                 ret = -EINVAL;
15182                 goto out;
15183         }
15184
15185         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15186                 pmk_conf.pmk_r0_name =
15187                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15188
15189         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15190 out:
15191         wdev_unlock(wdev);
15192         return ret;
15193 }
15194
15195 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15196 {
15197         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15198         struct net_device *dev = info->user_ptr[1];
15199         struct wireless_dev *wdev = dev->ieee80211_ptr;
15200         const u8 *aa;
15201         int ret;
15202
15203         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15204             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15205                 return -EOPNOTSUPP;
15206
15207         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15208                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15209                 return -EOPNOTSUPP;
15210
15211         if (!info->attrs[NL80211_ATTR_MAC])
15212                 return -EINVAL;
15213
15214         wdev_lock(wdev);
15215         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15216         ret = rdev_del_pmk(rdev, dev, aa);
15217         wdev_unlock(wdev);
15218
15219         return ret;
15220 }
15221
15222 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15223 {
15224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15225         struct net_device *dev = info->user_ptr[1];
15226         struct cfg80211_external_auth_params params;
15227
15228         if (!rdev->ops->external_auth)
15229                 return -EOPNOTSUPP;
15230
15231         if (!info->attrs[NL80211_ATTR_SSID] &&
15232             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15233             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15234                 return -EINVAL;
15235
15236         if (!info->attrs[NL80211_ATTR_BSSID])
15237                 return -EINVAL;
15238
15239         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15240                 return -EINVAL;
15241
15242         memset(&params, 0, sizeof(params));
15243
15244         if (info->attrs[NL80211_ATTR_SSID]) {
15245                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15246                 if (params.ssid.ssid_len == 0)
15247                         return -EINVAL;
15248                 memcpy(params.ssid.ssid,
15249                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15250                        params.ssid.ssid_len);
15251         }
15252
15253         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15254                ETH_ALEN);
15255
15256         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15257
15258         if (info->attrs[NL80211_ATTR_PMKID])
15259                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15260
15261         return rdev_external_auth(rdev, dev, &params);
15262 }
15263
15264 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15265 {
15266         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15267         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15268         struct net_device *dev = info->user_ptr[1];
15269         struct wireless_dev *wdev = dev->ieee80211_ptr;
15270         const u8 *buf;
15271         size_t len;
15272         u8 *dest;
15273         u16 proto;
15274         bool noencrypt;
15275         u64 cookie = 0;
15276         int link_id;
15277         int err;
15278
15279         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15280                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15281                 return -EOPNOTSUPP;
15282
15283         if (!rdev->ops->tx_control_port)
15284                 return -EOPNOTSUPP;
15285
15286         if (!info->attrs[NL80211_ATTR_FRAME] ||
15287             !info->attrs[NL80211_ATTR_MAC] ||
15288             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15289                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15290                 return -EINVAL;
15291         }
15292
15293         wdev_lock(wdev);
15294
15295         switch (wdev->iftype) {
15296         case NL80211_IFTYPE_AP:
15297         case NL80211_IFTYPE_P2P_GO:
15298         case NL80211_IFTYPE_MESH_POINT:
15299                 break;
15300         case NL80211_IFTYPE_ADHOC:
15301                 if (wdev->u.ibss.current_bss)
15302                         break;
15303                 err = -ENOTCONN;
15304                 goto out;
15305         case NL80211_IFTYPE_STATION:
15306         case NL80211_IFTYPE_P2P_CLIENT:
15307                 if (wdev->connected)
15308                         break;
15309                 err = -ENOTCONN;
15310                 goto out;
15311         default:
15312                 err = -EOPNOTSUPP;
15313                 goto out;
15314         }
15315
15316         wdev_unlock(wdev);
15317
15318         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15319         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15320         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15321         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15322         noencrypt =
15323                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15324
15325         link_id = nl80211_link_id_or_invalid(info->attrs);
15326
15327         err = rdev_tx_control_port(rdev, dev, buf, len,
15328                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15329                                    dont_wait_for_ack ? NULL : &cookie);
15330         if (!err && !dont_wait_for_ack)
15331                 nl_set_extack_cookie_u64(info->extack, cookie);
15332         return err;
15333  out:
15334         wdev_unlock(wdev);
15335         return err;
15336 }
15337
15338 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15339                                            struct genl_info *info)
15340 {
15341         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15342         struct net_device *dev = info->user_ptr[1];
15343         struct wireless_dev *wdev = dev->ieee80211_ptr;
15344         struct cfg80211_ftm_responder_stats ftm_stats = {};
15345         unsigned int link_id = nl80211_link_id(info->attrs);
15346         struct sk_buff *msg;
15347         void *hdr;
15348         struct nlattr *ftm_stats_attr;
15349         int err;
15350
15351         if (wdev->iftype != NL80211_IFTYPE_AP ||
15352             !wdev->links[link_id].ap.beacon_interval)
15353                 return -EOPNOTSUPP;
15354
15355         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15356         if (err)
15357                 return err;
15358
15359         if (!ftm_stats.filled)
15360                 return -ENODATA;
15361
15362         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15363         if (!msg)
15364                 return -ENOMEM;
15365
15366         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15367                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15368         if (!hdr)
15369                 goto nla_put_failure;
15370
15371         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15372                 goto nla_put_failure;
15373
15374         ftm_stats_attr = nla_nest_start_noflag(msg,
15375                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15376         if (!ftm_stats_attr)
15377                 goto nla_put_failure;
15378
15379 #define SET_FTM(field, name, type)                                       \
15380         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15381             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15382                              ftm_stats.field))                           \
15383                 goto nla_put_failure; } while (0)
15384 #define SET_FTM_U64(field, name)                                         \
15385         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15386             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15387                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15388                 goto nla_put_failure; } while (0)
15389
15390         SET_FTM(success_num, SUCCESS_NUM, u32);
15391         SET_FTM(partial_num, PARTIAL_NUM, u32);
15392         SET_FTM(failed_num, FAILED_NUM, u32);
15393         SET_FTM(asap_num, ASAP_NUM, u32);
15394         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15395         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15396         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15397         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15398         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15399 #undef SET_FTM
15400
15401         nla_nest_end(msg, ftm_stats_attr);
15402
15403         genlmsg_end(msg, hdr);
15404         return genlmsg_reply(msg, info);
15405
15406 nla_put_failure:
15407         nlmsg_free(msg);
15408         return -ENOBUFS;
15409 }
15410
15411 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15412 {
15413         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15414         struct cfg80211_update_owe_info owe_info;
15415         struct net_device *dev = info->user_ptr[1];
15416
15417         if (!rdev->ops->update_owe_info)
15418                 return -EOPNOTSUPP;
15419
15420         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15421             !info->attrs[NL80211_ATTR_MAC])
15422                 return -EINVAL;
15423
15424         memset(&owe_info, 0, sizeof(owe_info));
15425         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15426         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15427
15428         if (info->attrs[NL80211_ATTR_IE]) {
15429                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15430                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15431         }
15432
15433         return rdev_update_owe_info(rdev, dev, &owe_info);
15434 }
15435
15436 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15437 {
15438         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15439         struct net_device *dev = info->user_ptr[1];
15440         struct wireless_dev *wdev = dev->ieee80211_ptr;
15441         struct station_info sinfo = {};
15442         const u8 *buf;
15443         size_t len;
15444         u8 *dest;
15445         int err;
15446
15447         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15448                 return -EOPNOTSUPP;
15449
15450         if (!info->attrs[NL80211_ATTR_MAC] ||
15451             !info->attrs[NL80211_ATTR_FRAME]) {
15452                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15453                 return -EINVAL;
15454         }
15455
15456         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15457                 return -EOPNOTSUPP;
15458
15459         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15460         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15461         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15462
15463         if (len < sizeof(struct ethhdr))
15464                 return -EINVAL;
15465
15466         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15467             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15468                 return -EINVAL;
15469
15470         err = rdev_get_station(rdev, dev, dest, &sinfo);
15471         if (err)
15472                 return err;
15473
15474         cfg80211_sinfo_release_content(&sinfo);
15475
15476         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15477 }
15478
15479 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15480                           struct nlattr *attrs[], struct net_device *dev,
15481                           struct cfg80211_tid_cfg *tid_conf,
15482                           struct genl_info *info, const u8 *peer,
15483                           unsigned int link_id)
15484 {
15485         struct netlink_ext_ack *extack = info->extack;
15486         u64 mask;
15487         int err;
15488
15489         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15490                 return -EINVAL;
15491
15492         tid_conf->config_override =
15493                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15494         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15495
15496         if (tid_conf->config_override) {
15497                 if (rdev->ops->reset_tid_config) {
15498                         err = rdev_reset_tid_config(rdev, dev, peer,
15499                                                     tid_conf->tids);
15500                         if (err)
15501                                 return err;
15502                 } else {
15503                         return -EINVAL;
15504                 }
15505         }
15506
15507         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15508                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15509                 tid_conf->noack =
15510                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15511         }
15512
15513         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15514                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15515                 tid_conf->retry_short =
15516                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15517
15518                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15519                         return -EINVAL;
15520         }
15521
15522         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15523                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15524                 tid_conf->retry_long =
15525                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15526
15527                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15528                         return -EINVAL;
15529         }
15530
15531         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15532                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15533                 tid_conf->ampdu =
15534                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15535         }
15536
15537         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15538                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15539                 tid_conf->rtscts =
15540                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15541         }
15542
15543         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15544                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15545                 tid_conf->amsdu =
15546                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15547         }
15548
15549         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15550                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15551
15552                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15553
15554                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15555                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15556                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15557                                                     &tid_conf->txrate_mask, dev,
15558                                                     true, link_id);
15559                         if (err)
15560                                 return err;
15561
15562                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15563                 }
15564                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15565         }
15566
15567         if (peer)
15568                 mask = rdev->wiphy.tid_config_support.peer;
15569         else
15570                 mask = rdev->wiphy.tid_config_support.vif;
15571
15572         if (tid_conf->mask & ~mask) {
15573                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15574                 return -ENOTSUPP;
15575         }
15576
15577         return 0;
15578 }
15579
15580 static int nl80211_set_tid_config(struct sk_buff *skb,
15581                                   struct genl_info *info)
15582 {
15583         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15584         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15585         unsigned int link_id = nl80211_link_id(info->attrs);
15586         struct net_device *dev = info->user_ptr[1];
15587         struct cfg80211_tid_config *tid_config;
15588         struct nlattr *tid;
15589         int conf_idx = 0, rem_conf;
15590         int ret = -EINVAL;
15591         u32 num_conf = 0;
15592
15593         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15594                 return -EINVAL;
15595
15596         if (!rdev->ops->set_tid_config)
15597                 return -EOPNOTSUPP;
15598
15599         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15600                             rem_conf)
15601                 num_conf++;
15602
15603         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15604                              GFP_KERNEL);
15605         if (!tid_config)
15606                 return -ENOMEM;
15607
15608         tid_config->n_tid_conf = num_conf;
15609
15610         if (info->attrs[NL80211_ATTR_MAC])
15611                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15612
15613         wdev_lock(dev->ieee80211_ptr);
15614
15615         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15616                             rem_conf) {
15617                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15618                                        tid, NULL, NULL);
15619
15620                 if (ret)
15621                         goto bad_tid_conf;
15622
15623                 ret = parse_tid_conf(rdev, attrs, dev,
15624                                      &tid_config->tid_conf[conf_idx],
15625                                      info, tid_config->peer, link_id);
15626                 if (ret)
15627                         goto bad_tid_conf;
15628
15629                 conf_idx++;
15630         }
15631
15632         ret = rdev_set_tid_config(rdev, dev, tid_config);
15633
15634 bad_tid_conf:
15635         kfree(tid_config);
15636         wdev_unlock(dev->ieee80211_ptr);
15637         return ret;
15638 }
15639
15640 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
15641 {
15642         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15643         struct cfg80211_color_change_settings params = {};
15644         struct net_device *dev = info->user_ptr[1];
15645         struct wireless_dev *wdev = dev->ieee80211_ptr;
15646         struct nlattr **tb;
15647         u16 offset;
15648         int err;
15649
15650         if (!rdev->ops->color_change)
15651                 return -EOPNOTSUPP;
15652
15653         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15654                                      NL80211_EXT_FEATURE_BSS_COLOR))
15655                 return -EOPNOTSUPP;
15656
15657         if (wdev->iftype != NL80211_IFTYPE_AP)
15658                 return -EOPNOTSUPP;
15659
15660         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
15661             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
15662             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
15663                 return -EINVAL;
15664
15665         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
15666         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
15667
15668         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next);
15669         if (err)
15670                 return err;
15671
15672         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
15673         if (!tb)
15674                 return -ENOMEM;
15675
15676         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
15677                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
15678                                nl80211_policy, info->extack);
15679         if (err)
15680                 goto out;
15681
15682         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change);
15683         if (err)
15684                 goto out;
15685
15686         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
15687                 err = -EINVAL;
15688                 goto out;
15689         }
15690
15691         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
15692                 err = -EINVAL;
15693                 goto out;
15694         }
15695
15696         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
15697         if (offset >= params.beacon_color_change.tail_len) {
15698                 err = -EINVAL;
15699                 goto out;
15700         }
15701
15702         if (params.beacon_color_change.tail[offset] != params.count) {
15703                 err = -EINVAL;
15704                 goto out;
15705         }
15706
15707         params.counter_offset_beacon = offset;
15708
15709         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
15710                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
15711                     sizeof(u16)) {
15712                         err = -EINVAL;
15713                         goto out;
15714                 }
15715
15716                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
15717                 if (offset >= params.beacon_color_change.probe_resp_len) {
15718                         err = -EINVAL;
15719                         goto out;
15720                 }
15721
15722                 if (params.beacon_color_change.probe_resp[offset] !=
15723                     params.count) {
15724                         err = -EINVAL;
15725                         goto out;
15726                 }
15727
15728                 params.counter_offset_presp = offset;
15729         }
15730
15731         wdev_lock(wdev);
15732         err = rdev_color_change(rdev, dev, &params);
15733         wdev_unlock(wdev);
15734
15735 out:
15736         kfree(params.beacon_next.mbssid_ies);
15737         kfree(params.beacon_color_change.mbssid_ies);
15738         kfree(tb);
15739         return err;
15740 }
15741
15742 static int nl80211_set_fils_aad(struct sk_buff *skb,
15743                                 struct genl_info *info)
15744 {
15745         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15746         struct net_device *dev = info->user_ptr[1];
15747         struct cfg80211_fils_aad fils_aad = {};
15748         u8 *nonces;
15749
15750         if (!info->attrs[NL80211_ATTR_MAC] ||
15751             !info->attrs[NL80211_ATTR_FILS_KEK] ||
15752             !info->attrs[NL80211_ATTR_FILS_NONCES])
15753                 return -EINVAL;
15754
15755         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15756         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
15757         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
15758         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
15759         fils_aad.snonce = nonces;
15760         fils_aad.anonce = nonces + FILS_NONCE_LEN;
15761
15762         return rdev_set_fils_aad(rdev, dev, &fils_aad);
15763 }
15764
15765 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
15766 {
15767         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15768         unsigned int link_id = nl80211_link_id(info->attrs);
15769         struct net_device *dev = info->user_ptr[1];
15770         struct wireless_dev *wdev = dev->ieee80211_ptr;
15771         int ret;
15772
15773         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
15774                 return -EINVAL;
15775
15776         switch (wdev->iftype) {
15777         case NL80211_IFTYPE_AP:
15778                 break;
15779         default:
15780                 return -EINVAL;
15781         }
15782
15783         if (!info->attrs[NL80211_ATTR_MAC] ||
15784             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
15785                 return -EINVAL;
15786
15787         wdev_lock(wdev);
15788         wdev->valid_links |= BIT(link_id);
15789         ether_addr_copy(wdev->links[link_id].addr,
15790                         nla_data(info->attrs[NL80211_ATTR_MAC]));
15791
15792         ret = rdev_add_intf_link(rdev, wdev, link_id);
15793         if (ret) {
15794                 wdev->valid_links &= ~BIT(link_id);
15795                 eth_zero_addr(wdev->links[link_id].addr);
15796         }
15797         wdev_unlock(wdev);
15798
15799         return ret;
15800 }
15801
15802 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
15803 {
15804         unsigned int link_id = nl80211_link_id(info->attrs);
15805         struct net_device *dev = info->user_ptr[1];
15806         struct wireless_dev *wdev = dev->ieee80211_ptr;
15807
15808         /* cannot remove if there's no link */
15809         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
15810                 return -EINVAL;
15811
15812         switch (wdev->iftype) {
15813         case NL80211_IFTYPE_AP:
15814                 break;
15815         default:
15816                 return -EINVAL;
15817         }
15818
15819         wdev_lock(wdev);
15820         cfg80211_remove_link(wdev, link_id);
15821         wdev_unlock(wdev);
15822
15823         return 0;
15824 }
15825
15826 static int
15827 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
15828                              bool add)
15829 {
15830         struct link_station_parameters params = {};
15831         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15832         struct net_device *dev = info->user_ptr[1];
15833         int err;
15834
15835         if ((add && !rdev->ops->add_link_station) ||
15836             (!add && !rdev->ops->mod_link_station))
15837                 return -EOPNOTSUPP;
15838
15839         if (add && !info->attrs[NL80211_ATTR_MAC])
15840                 return -EINVAL;
15841
15842         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
15843                 return -EINVAL;
15844
15845         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
15846                 return -EINVAL;
15847
15848         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
15849
15850         if (info->attrs[NL80211_ATTR_MAC]) {
15851                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
15852                 if (!is_valid_ether_addr(params.link_mac))
15853                         return -EINVAL;
15854         }
15855
15856         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
15857                 return -EINVAL;
15858
15859         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
15860
15861         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
15862                 params.supported_rates =
15863                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
15864                 params.supported_rates_len =
15865                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
15866         }
15867
15868         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
15869                 params.ht_capa =
15870                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
15871
15872         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
15873                 params.vht_capa =
15874                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
15875
15876         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
15877                 params.he_capa =
15878                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
15879                 params.he_capa_len =
15880                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
15881
15882                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
15883                         params.eht_capa =
15884                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
15885                         params.eht_capa_len =
15886                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
15887
15888                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
15889                                                         (const u8 *)params.eht_capa,
15890                                                         params.eht_capa_len))
15891                                 return -EINVAL;
15892                 }
15893         }
15894
15895         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
15896                 params.he_6ghz_capa =
15897                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
15898
15899         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
15900                 params.opmode_notif_used = true;
15901                 params.opmode_notif =
15902                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
15903         }
15904
15905         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
15906                                                 &params.txpwr_set);
15907         if (err)
15908                 return err;
15909
15910         wdev_lock(dev->ieee80211_ptr);
15911         if (add)
15912                 err = rdev_add_link_station(rdev, dev, &params);
15913         else
15914                 err = rdev_mod_link_station(rdev, dev, &params);
15915         wdev_unlock(dev->ieee80211_ptr);
15916
15917         return err;
15918 }
15919
15920 static int
15921 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
15922 {
15923         return nl80211_add_mod_link_station(skb, info, true);
15924 }
15925
15926 static int
15927 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
15928 {
15929         return nl80211_add_mod_link_station(skb, info, false);
15930 }
15931
15932 static int
15933 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
15934 {
15935         struct link_station_del_parameters params = {};
15936         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15937         struct net_device *dev = info->user_ptr[1];
15938         int ret;
15939
15940         if (!rdev->ops->del_link_station)
15941                 return -EOPNOTSUPP;
15942
15943         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
15944             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
15945                 return -EINVAL;
15946
15947         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
15948         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
15949
15950         wdev_lock(dev->ieee80211_ptr);
15951         ret = rdev_del_link_station(rdev, dev, &params);
15952         wdev_unlock(dev->ieee80211_ptr);
15953
15954         return ret;
15955 }
15956
15957 #define NL80211_FLAG_NEED_WIPHY         0x01
15958 #define NL80211_FLAG_NEED_NETDEV        0x02
15959 #define NL80211_FLAG_NEED_RTNL          0x04
15960 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
15961 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
15962                                          NL80211_FLAG_CHECK_NETDEV_UP)
15963 #define NL80211_FLAG_NEED_WDEV          0x10
15964 /* If a netdev is associated, it must be UP, P2P must be started */
15965 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
15966                                          NL80211_FLAG_CHECK_NETDEV_UP)
15967 #define NL80211_FLAG_CLEAR_SKB          0x20
15968 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
15969 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
15970 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
15971
15972 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
15973         SELECTOR(__sel, NONE, 0) /* must be first */    \
15974         SELECTOR(__sel, WIPHY,                          \
15975                  NL80211_FLAG_NEED_WIPHY)               \
15976         SELECTOR(__sel, WDEV,                           \
15977                  NL80211_FLAG_NEED_WDEV)                \
15978         SELECTOR(__sel, NETDEV,                         \
15979                  NL80211_FLAG_NEED_NETDEV)              \
15980         SELECTOR(__sel, NETDEV_LINK,                    \
15981                  NL80211_FLAG_NEED_NETDEV |             \
15982                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
15983         SELECTOR(__sel, NETDEV_NO_MLO,                  \
15984                  NL80211_FLAG_NEED_NETDEV |             \
15985                  NL80211_FLAG_MLO_UNSUPPORTED)  \
15986         SELECTOR(__sel, WIPHY_RTNL,                     \
15987                  NL80211_FLAG_NEED_WIPHY |              \
15988                  NL80211_FLAG_NEED_RTNL)                \
15989         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
15990                  NL80211_FLAG_NEED_WIPHY |              \
15991                  NL80211_FLAG_NEED_RTNL |               \
15992                  NL80211_FLAG_NO_WIPHY_MTX)             \
15993         SELECTOR(__sel, WDEV_RTNL,                      \
15994                  NL80211_FLAG_NEED_WDEV |               \
15995                  NL80211_FLAG_NEED_RTNL)                \
15996         SELECTOR(__sel, NETDEV_RTNL,                    \
15997                  NL80211_FLAG_NEED_NETDEV |             \
15998                  NL80211_FLAG_NEED_RTNL)                \
15999         SELECTOR(__sel, NETDEV_UP,                      \
16000                  NL80211_FLAG_NEED_NETDEV_UP)           \
16001         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16002                  NL80211_FLAG_NEED_NETDEV_UP |          \
16003                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16004         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16005                  NL80211_FLAG_NEED_NETDEV_UP |          \
16006                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16007         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16008                  NL80211_FLAG_NEED_NETDEV_UP |          \
16009                  NL80211_FLAG_CLEAR_SKB |               \
16010                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16011         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16012                  NL80211_FLAG_NEED_NETDEV_UP |          \
16013                  NL80211_FLAG_NO_WIPHY_MTX)             \
16014         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16015                  NL80211_FLAG_NEED_NETDEV_UP |          \
16016                  NL80211_FLAG_NO_WIPHY_MTX |            \
16017                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16018         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16019                  NL80211_FLAG_NEED_NETDEV_UP |          \
16020                  NL80211_FLAG_CLEAR_SKB)                \
16021         SELECTOR(__sel, WDEV_UP,                        \
16022                  NL80211_FLAG_NEED_WDEV_UP)             \
16023         SELECTOR(__sel, WDEV_UP_LINK,                   \
16024                  NL80211_FLAG_NEED_WDEV_UP |            \
16025                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16026         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16027                  NL80211_FLAG_NEED_WDEV_UP |            \
16028                  NL80211_FLAG_NEED_RTNL)                \
16029         SELECTOR(__sel, WIPHY_CLEAR,                    \
16030                  NL80211_FLAG_NEED_WIPHY |              \
16031                  NL80211_FLAG_CLEAR_SKB)
16032
16033 enum nl80211_internal_flags_selector {
16034 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16035         INTERNAL_FLAG_SELECTORS(_)
16036 #undef SELECTOR
16037 };
16038
16039 static u32 nl80211_internal_flags[] = {
16040 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16041         INTERNAL_FLAG_SELECTORS(_)
16042 #undef SELECTOR
16043 };
16044
16045 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
16046                             struct genl_info *info)
16047 {
16048         struct cfg80211_registered_device *rdev = NULL;
16049         struct wireless_dev *wdev = NULL;
16050         struct net_device *dev = NULL;
16051         u32 internal_flags;
16052         int err;
16053
16054         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16055                 return -EINVAL;
16056
16057         internal_flags = nl80211_internal_flags[ops->internal_flags];
16058
16059         rtnl_lock();
16060         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16061                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16062                 if (IS_ERR(rdev)) {
16063                         err = PTR_ERR(rdev);
16064                         goto out_unlock;
16065                 }
16066                 info->user_ptr[0] = rdev;
16067         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16068                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16069                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16070                                                   info->attrs);
16071                 if (IS_ERR(wdev)) {
16072                         err = PTR_ERR(wdev);
16073                         goto out_unlock;
16074                 }
16075
16076                 dev = wdev->netdev;
16077                 dev_hold(dev);
16078                 rdev = wiphy_to_rdev(wdev->wiphy);
16079
16080                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16081                         if (!dev) {
16082                                 err = -EINVAL;
16083                                 goto out_unlock;
16084                         }
16085
16086                         info->user_ptr[1] = dev;
16087                 } else {
16088                         info->user_ptr[1] = wdev;
16089                 }
16090
16091                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16092                     !wdev_running(wdev)) {
16093                         err = -ENETDOWN;
16094                         goto out_unlock;
16095                 }
16096
16097                 info->user_ptr[0] = rdev;
16098         }
16099
16100         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16101                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16102
16103                 if (!wdev) {
16104                         err = -EINVAL;
16105                         goto out_unlock;
16106                 }
16107
16108                 /* MLO -> require valid link ID */
16109                 if (wdev->valid_links &&
16110                     (!link_id ||
16111                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16112                         err = -EINVAL;
16113                         goto out_unlock;
16114                 }
16115
16116                 /* non-MLO -> no link ID attribute accepted */
16117                 if (!wdev->valid_links && link_id) {
16118                         err = -EINVAL;
16119                         goto out_unlock;
16120                 }
16121         }
16122
16123         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16124                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16125                     (wdev && wdev->valid_links)) {
16126                         err = -EINVAL;
16127                         goto out_unlock;
16128                 }
16129         }
16130
16131         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16132                 wiphy_lock(&rdev->wiphy);
16133                 /* we keep the mutex locked until post_doit */
16134                 __release(&rdev->wiphy.mtx);
16135         }
16136         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16137                 rtnl_unlock();
16138
16139         return 0;
16140 out_unlock:
16141         rtnl_unlock();
16142         dev_put(dev);
16143         return err;
16144 }
16145
16146 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
16147                               struct genl_info *info)
16148 {
16149         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16150
16151         if (info->user_ptr[1]) {
16152                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16153                         struct wireless_dev *wdev = info->user_ptr[1];
16154
16155                         dev_put(wdev->netdev);
16156                 } else {
16157                         dev_put(info->user_ptr[1]);
16158                 }
16159         }
16160
16161         if (info->user_ptr[0] &&
16162             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16163                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16164
16165                 /* we kept the mutex locked since pre_doit */
16166                 __acquire(&rdev->wiphy.mtx);
16167                 wiphy_unlock(&rdev->wiphy);
16168         }
16169
16170         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16171                 rtnl_unlock();
16172
16173         /* If needed, clear the netlink message payload from the SKB
16174          * as it might contain key data that shouldn't stick around on
16175          * the heap after the SKB is freed. The netlink message header
16176          * is still needed for further processing, so leave it intact.
16177          */
16178         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16179                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16180
16181                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16182         }
16183 }
16184
16185 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16186                                      struct cfg80211_sar_specs *sar_specs,
16187                                      struct nlattr *spec[], int index)
16188 {
16189         u32 range_index, i;
16190
16191         if (!sar_specs || !spec)
16192                 return -EINVAL;
16193
16194         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16195             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16196                 return -EINVAL;
16197
16198         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16199
16200         /* check if range_index exceeds num_freq_ranges */
16201         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16202                 return -EINVAL;
16203
16204         /* check if range_index duplicates */
16205         for (i = 0; i < index; i++) {
16206                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16207                         return -EINVAL;
16208         }
16209
16210         sar_specs->sub_specs[index].power =
16211                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16212
16213         sar_specs->sub_specs[index].freq_range_index = range_index;
16214
16215         return 0;
16216 }
16217
16218 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16219 {
16220         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16221         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16222         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16223         struct cfg80211_sar_specs *sar_spec;
16224         enum nl80211_sar_type type;
16225         struct nlattr *spec_list;
16226         u32 specs;
16227         int rem, err;
16228
16229         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16230                 return -EOPNOTSUPP;
16231
16232         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16233                 return -EINVAL;
16234
16235         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16236                          info->attrs[NL80211_ATTR_SAR_SPEC],
16237                          NULL, NULL);
16238
16239         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16240                 return -EINVAL;
16241
16242         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16243         if (type != rdev->wiphy.sar_capa->type)
16244                 return -EINVAL;
16245
16246         specs = 0;
16247         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16248                 specs++;
16249
16250         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16251                 return -EINVAL;
16252
16253         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16254         if (!sar_spec)
16255                 return -ENOMEM;
16256
16257         sar_spec->type = type;
16258         specs = 0;
16259         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16260                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16261                                  spec_list, NULL, NULL);
16262
16263                 switch (type) {
16264                 case NL80211_SAR_TYPE_POWER:
16265                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16266                                                       spec, specs)) {
16267                                 err = -EINVAL;
16268                                 goto error;
16269                         }
16270                         break;
16271                 default:
16272                         err = -EINVAL;
16273                         goto error;
16274                 }
16275                 specs++;
16276         }
16277
16278         sar_spec->num_sub_specs = specs;
16279
16280         rdev->cur_cmd_info = info;
16281         err = rdev_set_sar_specs(rdev, sar_spec);
16282         rdev->cur_cmd_info = NULL;
16283 error:
16284         kfree(sar_spec);
16285         return err;
16286 }
16287
16288 #define SELECTOR(__sel, name, value) \
16289         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16290 int __missing_selector(void);
16291 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16292
16293 static const struct genl_ops nl80211_ops[] = {
16294         {
16295                 .cmd = NL80211_CMD_GET_WIPHY,
16296                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16297                 .doit = nl80211_get_wiphy,
16298                 .dumpit = nl80211_dump_wiphy,
16299                 .done = nl80211_dump_wiphy_done,
16300                 /* can be retrieved by unprivileged users */
16301                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16302         },
16303 };
16304
16305 static const struct genl_small_ops nl80211_small_ops[] = {
16306         {
16307                 .cmd = NL80211_CMD_SET_WIPHY,
16308                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16309                 .doit = nl80211_set_wiphy,
16310                 .flags = GENL_UNS_ADMIN_PERM,
16311         },
16312         {
16313                 .cmd = NL80211_CMD_GET_INTERFACE,
16314                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16315                 .doit = nl80211_get_interface,
16316                 .dumpit = nl80211_dump_interface,
16317                 /* can be retrieved by unprivileged users */
16318                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16319         },
16320         {
16321                 .cmd = NL80211_CMD_SET_INTERFACE,
16322                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16323                 .doit = nl80211_set_interface,
16324                 .flags = GENL_UNS_ADMIN_PERM,
16325                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16326                                          NL80211_FLAG_NEED_RTNL),
16327         },
16328         {
16329                 .cmd = NL80211_CMD_NEW_INTERFACE,
16330                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16331                 .doit = nl80211_new_interface,
16332                 .flags = GENL_UNS_ADMIN_PERM,
16333                 .internal_flags =
16334                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16335                                NL80211_FLAG_NEED_RTNL |
16336                                /* we take the wiphy mutex later ourselves */
16337                                NL80211_FLAG_NO_WIPHY_MTX),
16338         },
16339         {
16340                 .cmd = NL80211_CMD_DEL_INTERFACE,
16341                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16342                 .doit = nl80211_del_interface,
16343                 .flags = GENL_UNS_ADMIN_PERM,
16344                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16345                                          NL80211_FLAG_NEED_RTNL),
16346         },
16347         {
16348                 .cmd = NL80211_CMD_GET_KEY,
16349                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16350                 .doit = nl80211_get_key,
16351                 .flags = GENL_UNS_ADMIN_PERM,
16352                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16353         },
16354         {
16355                 .cmd = NL80211_CMD_SET_KEY,
16356                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16357                 .doit = nl80211_set_key,
16358                 .flags = GENL_UNS_ADMIN_PERM,
16359                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16360                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16361                                          NL80211_FLAG_CLEAR_SKB),
16362         },
16363         {
16364                 .cmd = NL80211_CMD_NEW_KEY,
16365                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16366                 .doit = nl80211_new_key,
16367                 .flags = GENL_UNS_ADMIN_PERM,
16368                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16369                                          NL80211_FLAG_CLEAR_SKB),
16370         },
16371         {
16372                 .cmd = NL80211_CMD_DEL_KEY,
16373                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16374                 .doit = nl80211_del_key,
16375                 .flags = GENL_UNS_ADMIN_PERM,
16376                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16377         },
16378         {
16379                 .cmd = NL80211_CMD_SET_BEACON,
16380                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16381                 .flags = GENL_UNS_ADMIN_PERM,
16382                 .doit = nl80211_set_beacon,
16383                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16384                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16385         },
16386         {
16387                 .cmd = NL80211_CMD_START_AP,
16388                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16389                 .flags = GENL_UNS_ADMIN_PERM,
16390                 .doit = nl80211_start_ap,
16391                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16392                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16393         },
16394         {
16395                 .cmd = NL80211_CMD_STOP_AP,
16396                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16397                 .flags = GENL_UNS_ADMIN_PERM,
16398                 .doit = nl80211_stop_ap,
16399                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16400                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16401         },
16402         {
16403                 .cmd = NL80211_CMD_GET_STATION,
16404                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16405                 .doit = nl80211_get_station,
16406                 .dumpit = nl80211_dump_station,
16407                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16408         },
16409         {
16410                 .cmd = NL80211_CMD_SET_STATION,
16411                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16412                 .doit = nl80211_set_station,
16413                 .flags = GENL_UNS_ADMIN_PERM,
16414                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16415         },
16416         {
16417                 .cmd = NL80211_CMD_NEW_STATION,
16418                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16419                 .doit = nl80211_new_station,
16420                 .flags = GENL_UNS_ADMIN_PERM,
16421                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16422         },
16423         {
16424                 .cmd = NL80211_CMD_DEL_STATION,
16425                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16426                 .doit = nl80211_del_station,
16427                 .flags = GENL_UNS_ADMIN_PERM,
16428                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16429         },
16430         {
16431                 .cmd = NL80211_CMD_GET_MPATH,
16432                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16433                 .doit = nl80211_get_mpath,
16434                 .dumpit = nl80211_dump_mpath,
16435                 .flags = GENL_UNS_ADMIN_PERM,
16436                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16437         },
16438         {
16439                 .cmd = NL80211_CMD_GET_MPP,
16440                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16441                 .doit = nl80211_get_mpp,
16442                 .dumpit = nl80211_dump_mpp,
16443                 .flags = GENL_UNS_ADMIN_PERM,
16444                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16445         },
16446         {
16447                 .cmd = NL80211_CMD_SET_MPATH,
16448                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16449                 .doit = nl80211_set_mpath,
16450                 .flags = GENL_UNS_ADMIN_PERM,
16451                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16452         },
16453         {
16454                 .cmd = NL80211_CMD_NEW_MPATH,
16455                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16456                 .doit = nl80211_new_mpath,
16457                 .flags = GENL_UNS_ADMIN_PERM,
16458                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16459         },
16460         {
16461                 .cmd = NL80211_CMD_DEL_MPATH,
16462                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16463                 .doit = nl80211_del_mpath,
16464                 .flags = GENL_UNS_ADMIN_PERM,
16465                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16466         },
16467         {
16468                 .cmd = NL80211_CMD_SET_BSS,
16469                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16470                 .doit = nl80211_set_bss,
16471                 .flags = GENL_UNS_ADMIN_PERM,
16472                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16473         },
16474         {
16475                 .cmd = NL80211_CMD_GET_REG,
16476                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16477                 .doit = nl80211_get_reg_do,
16478                 .dumpit = nl80211_get_reg_dump,
16479                 /* can be retrieved by unprivileged users */
16480         },
16481 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16482         {
16483                 .cmd = NL80211_CMD_SET_REG,
16484                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16485                 .doit = nl80211_set_reg,
16486                 .flags = GENL_ADMIN_PERM,
16487         },
16488 #endif
16489         {
16490                 .cmd = NL80211_CMD_REQ_SET_REG,
16491                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16492                 .doit = nl80211_req_set_reg,
16493                 .flags = GENL_ADMIN_PERM,
16494         },
16495         {
16496                 .cmd = NL80211_CMD_RELOAD_REGDB,
16497                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16498                 .doit = nl80211_reload_regdb,
16499                 .flags = GENL_ADMIN_PERM,
16500         },
16501         {
16502                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16503                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16504                 .doit = nl80211_get_mesh_config,
16505                 /* can be retrieved by unprivileged users */
16506                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16507         },
16508         {
16509                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16510                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16511                 .doit = nl80211_update_mesh_config,
16512                 .flags = GENL_UNS_ADMIN_PERM,
16513                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16514         },
16515         {
16516                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16517                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16518                 .doit = nl80211_trigger_scan,
16519                 .flags = GENL_UNS_ADMIN_PERM,
16520                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16521         },
16522         {
16523                 .cmd = NL80211_CMD_ABORT_SCAN,
16524                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16525                 .doit = nl80211_abort_scan,
16526                 .flags = GENL_UNS_ADMIN_PERM,
16527                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16528         },
16529         {
16530                 .cmd = NL80211_CMD_GET_SCAN,
16531                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16532                 .dumpit = nl80211_dump_scan,
16533         },
16534         {
16535                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16536                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16537                 .doit = nl80211_start_sched_scan,
16538                 .flags = GENL_UNS_ADMIN_PERM,
16539                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16540         },
16541         {
16542                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16543                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16544                 .doit = nl80211_stop_sched_scan,
16545                 .flags = GENL_UNS_ADMIN_PERM,
16546                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16547         },
16548         {
16549                 .cmd = NL80211_CMD_AUTHENTICATE,
16550                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16551                 .doit = nl80211_authenticate,
16552                 .flags = GENL_UNS_ADMIN_PERM,
16553                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16554                                          NL80211_FLAG_CLEAR_SKB),
16555         },
16556         {
16557                 .cmd = NL80211_CMD_ASSOCIATE,
16558                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16559                 .doit = nl80211_associate,
16560                 .flags = GENL_UNS_ADMIN_PERM,
16561                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16562                                          NL80211_FLAG_CLEAR_SKB),
16563         },
16564         {
16565                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16566                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16567                 .doit = nl80211_deauthenticate,
16568                 .flags = GENL_UNS_ADMIN_PERM,
16569                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16570         },
16571         {
16572                 .cmd = NL80211_CMD_DISASSOCIATE,
16573                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16574                 .doit = nl80211_disassociate,
16575                 .flags = GENL_UNS_ADMIN_PERM,
16576                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16577         },
16578         {
16579                 .cmd = NL80211_CMD_JOIN_IBSS,
16580                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16581                 .doit = nl80211_join_ibss,
16582                 .flags = GENL_UNS_ADMIN_PERM,
16583                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16584         },
16585         {
16586                 .cmd = NL80211_CMD_LEAVE_IBSS,
16587                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16588                 .doit = nl80211_leave_ibss,
16589                 .flags = GENL_UNS_ADMIN_PERM,
16590                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16591         },
16592 #ifdef CONFIG_NL80211_TESTMODE
16593         {
16594                 .cmd = NL80211_CMD_TESTMODE,
16595                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16596                 .doit = nl80211_testmode_do,
16597                 .dumpit = nl80211_testmode_dump,
16598                 .flags = GENL_UNS_ADMIN_PERM,
16599                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16600         },
16601 #endif
16602         {
16603                 .cmd = NL80211_CMD_CONNECT,
16604                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16605                 .doit = nl80211_connect,
16606                 .flags = GENL_UNS_ADMIN_PERM,
16607                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16608                                          NL80211_FLAG_CLEAR_SKB),
16609         },
16610         {
16611                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
16612                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16613                 .doit = nl80211_update_connect_params,
16614                 .flags = GENL_ADMIN_PERM,
16615                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16616                                          NL80211_FLAG_CLEAR_SKB),
16617         },
16618         {
16619                 .cmd = NL80211_CMD_DISCONNECT,
16620                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16621                 .doit = nl80211_disconnect,
16622                 .flags = GENL_UNS_ADMIN_PERM,
16623                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16624         },
16625         {
16626                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
16627                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16628                 .doit = nl80211_wiphy_netns,
16629                 .flags = GENL_UNS_ADMIN_PERM,
16630                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
16631                                          NL80211_FLAG_NEED_RTNL |
16632                                          NL80211_FLAG_NO_WIPHY_MTX),
16633         },
16634         {
16635                 .cmd = NL80211_CMD_GET_SURVEY,
16636                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16637                 .dumpit = nl80211_dump_survey,
16638         },
16639         {
16640                 .cmd = NL80211_CMD_SET_PMKSA,
16641                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16642                 .doit = nl80211_setdel_pmksa,
16643                 .flags = GENL_UNS_ADMIN_PERM,
16644                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16645                                          NL80211_FLAG_CLEAR_SKB),
16646         },
16647         {
16648                 .cmd = NL80211_CMD_DEL_PMKSA,
16649                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16650                 .doit = nl80211_setdel_pmksa,
16651                 .flags = GENL_UNS_ADMIN_PERM,
16652                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16653         },
16654         {
16655                 .cmd = NL80211_CMD_FLUSH_PMKSA,
16656                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16657                 .doit = nl80211_flush_pmksa,
16658                 .flags = GENL_UNS_ADMIN_PERM,
16659                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16660         },
16661         {
16662                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
16663                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16664                 .doit = nl80211_remain_on_channel,
16665                 .flags = GENL_UNS_ADMIN_PERM,
16666                 /* FIXME: requiring a link ID here is probably not good */
16667                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16668                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16669         },
16670         {
16671                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16672                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16673                 .doit = nl80211_cancel_remain_on_channel,
16674                 .flags = GENL_UNS_ADMIN_PERM,
16675                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16676         },
16677         {
16678                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
16679                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16680                 .doit = nl80211_set_tx_bitrate_mask,
16681                 .flags = GENL_UNS_ADMIN_PERM,
16682                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16683                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16684         },
16685         {
16686                 .cmd = NL80211_CMD_REGISTER_FRAME,
16687                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16688                 .doit = nl80211_register_mgmt,
16689                 .flags = GENL_UNS_ADMIN_PERM,
16690                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16691         },
16692         {
16693                 .cmd = NL80211_CMD_FRAME,
16694                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16695                 .doit = nl80211_tx_mgmt,
16696                 .flags = GENL_UNS_ADMIN_PERM,
16697                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16698         },
16699         {
16700                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
16701                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16702                 .doit = nl80211_tx_mgmt_cancel_wait,
16703                 .flags = GENL_UNS_ADMIN_PERM,
16704                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16705         },
16706         {
16707                 .cmd = NL80211_CMD_SET_POWER_SAVE,
16708                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16709                 .doit = nl80211_set_power_save,
16710                 .flags = GENL_UNS_ADMIN_PERM,
16711                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16712         },
16713         {
16714                 .cmd = NL80211_CMD_GET_POWER_SAVE,
16715                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16716                 .doit = nl80211_get_power_save,
16717                 /* can be retrieved by unprivileged users */
16718                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16719         },
16720         {
16721                 .cmd = NL80211_CMD_SET_CQM,
16722                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16723                 .doit = nl80211_set_cqm,
16724                 .flags = GENL_UNS_ADMIN_PERM,
16725                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16726         },
16727         {
16728                 .cmd = NL80211_CMD_SET_CHANNEL,
16729                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16730                 .doit = nl80211_set_channel,
16731                 .flags = GENL_UNS_ADMIN_PERM,
16732                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16733                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16734         },
16735         {
16736                 .cmd = NL80211_CMD_JOIN_MESH,
16737                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16738                 .doit = nl80211_join_mesh,
16739                 .flags = GENL_UNS_ADMIN_PERM,
16740                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16741         },
16742         {
16743                 .cmd = NL80211_CMD_LEAVE_MESH,
16744                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16745                 .doit = nl80211_leave_mesh,
16746                 .flags = GENL_UNS_ADMIN_PERM,
16747                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16748         },
16749         {
16750                 .cmd = NL80211_CMD_JOIN_OCB,
16751                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16752                 .doit = nl80211_join_ocb,
16753                 .flags = GENL_UNS_ADMIN_PERM,
16754                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16755         },
16756         {
16757                 .cmd = NL80211_CMD_LEAVE_OCB,
16758                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16759                 .doit = nl80211_leave_ocb,
16760                 .flags = GENL_UNS_ADMIN_PERM,
16761                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16762         },
16763 #ifdef CONFIG_PM
16764         {
16765                 .cmd = NL80211_CMD_GET_WOWLAN,
16766                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16767                 .doit = nl80211_get_wowlan,
16768                 /* can be retrieved by unprivileged users */
16769                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16770         },
16771         {
16772                 .cmd = NL80211_CMD_SET_WOWLAN,
16773                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16774                 .doit = nl80211_set_wowlan,
16775                 .flags = GENL_UNS_ADMIN_PERM,
16776                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16777         },
16778 #endif
16779         {
16780                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
16781                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16782                 .doit = nl80211_set_rekey_data,
16783                 .flags = GENL_UNS_ADMIN_PERM,
16784                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16785                                          NL80211_FLAG_CLEAR_SKB),
16786         },
16787         {
16788                 .cmd = NL80211_CMD_TDLS_MGMT,
16789                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16790                 .doit = nl80211_tdls_mgmt,
16791                 .flags = GENL_UNS_ADMIN_PERM,
16792                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16793         },
16794         {
16795                 .cmd = NL80211_CMD_TDLS_OPER,
16796                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16797                 .doit = nl80211_tdls_oper,
16798                 .flags = GENL_UNS_ADMIN_PERM,
16799                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16800         },
16801         {
16802                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
16803                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16804                 .doit = nl80211_register_unexpected_frame,
16805                 .flags = GENL_UNS_ADMIN_PERM,
16806                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16807         },
16808         {
16809                 .cmd = NL80211_CMD_PROBE_CLIENT,
16810                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16811                 .doit = nl80211_probe_client,
16812                 .flags = GENL_UNS_ADMIN_PERM,
16813                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16814         },
16815         {
16816                 .cmd = NL80211_CMD_REGISTER_BEACONS,
16817                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16818                 .doit = nl80211_register_beacons,
16819                 .flags = GENL_UNS_ADMIN_PERM,
16820                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16821         },
16822         {
16823                 .cmd = NL80211_CMD_SET_NOACK_MAP,
16824                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16825                 .doit = nl80211_set_noack_map,
16826                 .flags = GENL_UNS_ADMIN_PERM,
16827                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16828         },
16829         {
16830                 .cmd = NL80211_CMD_START_P2P_DEVICE,
16831                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16832                 .doit = nl80211_start_p2p_device,
16833                 .flags = GENL_UNS_ADMIN_PERM,
16834                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16835                                          NL80211_FLAG_NEED_RTNL),
16836         },
16837         {
16838                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
16839                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16840                 .doit = nl80211_stop_p2p_device,
16841                 .flags = GENL_UNS_ADMIN_PERM,
16842                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16843                                          NL80211_FLAG_NEED_RTNL),
16844         },
16845         {
16846                 .cmd = NL80211_CMD_START_NAN,
16847                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16848                 .doit = nl80211_start_nan,
16849                 .flags = GENL_ADMIN_PERM,
16850                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16851                                          NL80211_FLAG_NEED_RTNL),
16852         },
16853         {
16854                 .cmd = NL80211_CMD_STOP_NAN,
16855                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16856                 .doit = nl80211_stop_nan,
16857                 .flags = GENL_ADMIN_PERM,
16858                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16859                                          NL80211_FLAG_NEED_RTNL),
16860         },
16861         {
16862                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
16863                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16864                 .doit = nl80211_nan_add_func,
16865                 .flags = GENL_ADMIN_PERM,
16866                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16867         },
16868         {
16869                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
16870                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16871                 .doit = nl80211_nan_del_func,
16872                 .flags = GENL_ADMIN_PERM,
16873                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16874         },
16875         {
16876                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
16877                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16878                 .doit = nl80211_nan_change_config,
16879                 .flags = GENL_ADMIN_PERM,
16880                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16881         },
16882         {
16883                 .cmd = NL80211_CMD_SET_MCAST_RATE,
16884                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16885                 .doit = nl80211_set_mcast_rate,
16886                 .flags = GENL_UNS_ADMIN_PERM,
16887                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16888         },
16889         {
16890                 .cmd = NL80211_CMD_SET_MAC_ACL,
16891                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16892                 .doit = nl80211_set_mac_acl,
16893                 .flags = GENL_UNS_ADMIN_PERM,
16894                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16895                                          NL80211_FLAG_MLO_UNSUPPORTED),
16896         },
16897         {
16898                 .cmd = NL80211_CMD_RADAR_DETECT,
16899                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16900                 .doit = nl80211_start_radar_detection,
16901                 .flags = GENL_UNS_ADMIN_PERM,
16902                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16903                                          NL80211_FLAG_NO_WIPHY_MTX |
16904                                          NL80211_FLAG_MLO_UNSUPPORTED),
16905         },
16906         {
16907                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
16908                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16909                 .doit = nl80211_get_protocol_features,
16910         },
16911         {
16912                 .cmd = NL80211_CMD_UPDATE_FT_IES,
16913                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16914                 .doit = nl80211_update_ft_ies,
16915                 .flags = GENL_UNS_ADMIN_PERM,
16916                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16917         },
16918         {
16919                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
16920                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16921                 .doit = nl80211_crit_protocol_start,
16922                 .flags = GENL_UNS_ADMIN_PERM,
16923                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16924         },
16925         {
16926                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
16927                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16928                 .doit = nl80211_crit_protocol_stop,
16929                 .flags = GENL_UNS_ADMIN_PERM,
16930                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16931         },
16932         {
16933                 .cmd = NL80211_CMD_GET_COALESCE,
16934                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16935                 .doit = nl80211_get_coalesce,
16936                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16937         },
16938         {
16939                 .cmd = NL80211_CMD_SET_COALESCE,
16940                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16941                 .doit = nl80211_set_coalesce,
16942                 .flags = GENL_UNS_ADMIN_PERM,
16943                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16944         },
16945         {
16946                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
16947                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16948                 .doit = nl80211_channel_switch,
16949                 .flags = GENL_UNS_ADMIN_PERM,
16950                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16951                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16952         },
16953         {
16954                 .cmd = NL80211_CMD_VENDOR,
16955                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16956                 .doit = nl80211_vendor_cmd,
16957                 .dumpit = nl80211_vendor_cmd_dump,
16958                 .flags = GENL_UNS_ADMIN_PERM,
16959                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
16960                                          NL80211_FLAG_CLEAR_SKB),
16961         },
16962         {
16963                 .cmd = NL80211_CMD_SET_QOS_MAP,
16964                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16965                 .doit = nl80211_set_qos_map,
16966                 .flags = GENL_UNS_ADMIN_PERM,
16967                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16968         },
16969         {
16970                 .cmd = NL80211_CMD_ADD_TX_TS,
16971                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16972                 .doit = nl80211_add_tx_ts,
16973                 .flags = GENL_UNS_ADMIN_PERM,
16974                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16975                                          NL80211_FLAG_MLO_UNSUPPORTED),
16976         },
16977         {
16978                 .cmd = NL80211_CMD_DEL_TX_TS,
16979                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16980                 .doit = nl80211_del_tx_ts,
16981                 .flags = GENL_UNS_ADMIN_PERM,
16982                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16983         },
16984         {
16985                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
16986                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16987                 .doit = nl80211_tdls_channel_switch,
16988                 .flags = GENL_UNS_ADMIN_PERM,
16989                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16990         },
16991         {
16992                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
16993                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16994                 .doit = nl80211_tdls_cancel_channel_switch,
16995                 .flags = GENL_UNS_ADMIN_PERM,
16996                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16997         },
16998         {
16999                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17000                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17001                 .doit = nl80211_set_multicast_to_unicast,
17002                 .flags = GENL_UNS_ADMIN_PERM,
17003                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17004         },
17005         {
17006                 .cmd = NL80211_CMD_SET_PMK,
17007                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17008                 .doit = nl80211_set_pmk,
17009                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17010                                          NL80211_FLAG_CLEAR_SKB),
17011         },
17012         {
17013                 .cmd = NL80211_CMD_DEL_PMK,
17014                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17015                 .doit = nl80211_del_pmk,
17016                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17017         },
17018         {
17019                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17020                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17021                 .doit = nl80211_external_auth,
17022                 .flags = GENL_ADMIN_PERM,
17023                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17024         },
17025         {
17026                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17027                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17028                 .doit = nl80211_tx_control_port,
17029                 .flags = GENL_UNS_ADMIN_PERM,
17030                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17031         },
17032         {
17033                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17034                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17035                 .doit = nl80211_get_ftm_responder_stats,
17036                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17037                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17038         },
17039         {
17040                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17041                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17042                 .doit = nl80211_pmsr_start,
17043                 .flags = GENL_UNS_ADMIN_PERM,
17044                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17045         },
17046         {
17047                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17048                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17049                 .doit = nl80211_notify_radar_detection,
17050                 .flags = GENL_UNS_ADMIN_PERM,
17051                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17052         },
17053         {
17054                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17055                 .doit = nl80211_update_owe_info,
17056                 .flags = GENL_ADMIN_PERM,
17057                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17058         },
17059         {
17060                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17061                 .doit = nl80211_probe_mesh_link,
17062                 .flags = GENL_UNS_ADMIN_PERM,
17063                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17064         },
17065         {
17066                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17067                 .doit = nl80211_set_tid_config,
17068                 .flags = GENL_UNS_ADMIN_PERM,
17069                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17070                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17071         },
17072         {
17073                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17074                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17075                 .doit = nl80211_set_sar_specs,
17076                 .flags = GENL_UNS_ADMIN_PERM,
17077                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17078                                          NL80211_FLAG_NEED_RTNL),
17079         },
17080         {
17081                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17082                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17083                 .doit = nl80211_color_change,
17084                 .flags = GENL_UNS_ADMIN_PERM,
17085                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17086         },
17087         {
17088                 .cmd = NL80211_CMD_SET_FILS_AAD,
17089                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17090                 .doit = nl80211_set_fils_aad,
17091                 .flags = GENL_UNS_ADMIN_PERM,
17092                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17093         },
17094         {
17095                 .cmd = NL80211_CMD_ADD_LINK,
17096                 .doit = nl80211_add_link,
17097                 .flags = GENL_UNS_ADMIN_PERM,
17098                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17099         },
17100         {
17101                 .cmd = NL80211_CMD_REMOVE_LINK,
17102                 .doit = nl80211_remove_link,
17103                 .flags = GENL_UNS_ADMIN_PERM,
17104                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17105                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17106         },
17107         {
17108                 .cmd = NL80211_CMD_ADD_LINK_STA,
17109                 .doit = nl80211_add_link_station,
17110                 .flags = GENL_UNS_ADMIN_PERM,
17111                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17112                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17113         },
17114         {
17115                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17116                 .doit = nl80211_modify_link_station,
17117                 .flags = GENL_UNS_ADMIN_PERM,
17118                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17119                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17120         },
17121         {
17122                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17123                 .doit = nl80211_remove_link_station,
17124                 .flags = GENL_UNS_ADMIN_PERM,
17125                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17126                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17127         },
17128 };
17129
17130 static struct genl_family nl80211_fam __ro_after_init = {
17131         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17132         .hdrsize = 0,                   /* no private header */
17133         .version = 1,                   /* no particular meaning now */
17134         .maxattr = NL80211_ATTR_MAX,
17135         .policy = nl80211_policy,
17136         .netnsok = true,
17137         .pre_doit = nl80211_pre_doit,
17138         .post_doit = nl80211_post_doit,
17139         .module = THIS_MODULE,
17140         .ops = nl80211_ops,
17141         .n_ops = ARRAY_SIZE(nl80211_ops),
17142         .small_ops = nl80211_small_ops,
17143         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17144         .mcgrps = nl80211_mcgrps,
17145         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17146         .parallel_ops = true,
17147 };
17148
17149 /* notification functions */
17150
17151 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17152                           enum nl80211_commands cmd)
17153 {
17154         struct sk_buff *msg;
17155         struct nl80211_dump_wiphy_state state = {};
17156
17157         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17158                 cmd != NL80211_CMD_DEL_WIPHY);
17159
17160         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17161         if (!msg)
17162                 return;
17163
17164         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17165                 nlmsg_free(msg);
17166                 return;
17167         }
17168
17169         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17170                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17171 }
17172
17173 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17174                                 struct wireless_dev *wdev,
17175                                 enum nl80211_commands cmd)
17176 {
17177         struct sk_buff *msg;
17178
17179         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17180         if (!msg)
17181                 return;
17182
17183         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17184                 nlmsg_free(msg);
17185                 return;
17186         }
17187
17188         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17189                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17190 }
17191
17192 static int nl80211_add_scan_req(struct sk_buff *msg,
17193                                 struct cfg80211_registered_device *rdev)
17194 {
17195         struct cfg80211_scan_request *req = rdev->scan_req;
17196         struct nlattr *nest;
17197         int i;
17198         struct cfg80211_scan_info *info;
17199
17200         if (WARN_ON(!req))
17201                 return 0;
17202
17203         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17204         if (!nest)
17205                 goto nla_put_failure;
17206         for (i = 0; i < req->n_ssids; i++) {
17207                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17208                         goto nla_put_failure;
17209         }
17210         nla_nest_end(msg, nest);
17211
17212         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17213                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17214                 if (!nest)
17215                         goto nla_put_failure;
17216                 for (i = 0; i < req->n_channels; i++) {
17217                         if (nla_put_u32(msg, i,
17218                                    ieee80211_channel_to_khz(req->channels[i])))
17219                                 goto nla_put_failure;
17220                 }
17221                 nla_nest_end(msg, nest);
17222         } else {
17223                 nest = nla_nest_start_noflag(msg,
17224                                              NL80211_ATTR_SCAN_FREQUENCIES);
17225                 if (!nest)
17226                         goto nla_put_failure;
17227                 for (i = 0; i < req->n_channels; i++) {
17228                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17229                                 goto nla_put_failure;
17230                 }
17231                 nla_nest_end(msg, nest);
17232         }
17233
17234         if (req->ie &&
17235             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17236                 goto nla_put_failure;
17237
17238         if (req->flags &&
17239             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17240                 goto nla_put_failure;
17241
17242         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17243                 &rdev->scan_req->info;
17244         if (info->scan_start_tsf &&
17245             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17246                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17247              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17248                      info->tsf_bssid)))
17249                 goto nla_put_failure;
17250
17251         return 0;
17252  nla_put_failure:
17253         return -ENOBUFS;
17254 }
17255
17256 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17257                                  struct cfg80211_registered_device *rdev,
17258                                  struct wireless_dev *wdev,
17259                                  u32 portid, u32 seq, int flags,
17260                                  u32 cmd)
17261 {
17262         void *hdr;
17263
17264         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17265         if (!hdr)
17266                 return -1;
17267
17268         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17269             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17270                                          wdev->netdev->ifindex)) ||
17271             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17272                               NL80211_ATTR_PAD))
17273                 goto nla_put_failure;
17274
17275         /* ignore errors and send incomplete event anyway */
17276         nl80211_add_scan_req(msg, rdev);
17277
17278         genlmsg_end(msg, hdr);
17279         return 0;
17280
17281  nla_put_failure:
17282         genlmsg_cancel(msg, hdr);
17283         return -EMSGSIZE;
17284 }
17285
17286 static int
17287 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17288                             struct cfg80211_sched_scan_request *req, u32 cmd)
17289 {
17290         void *hdr;
17291
17292         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17293         if (!hdr)
17294                 return -1;
17295
17296         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17297                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17298             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17299             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17300                               NL80211_ATTR_PAD))
17301                 goto nla_put_failure;
17302
17303         genlmsg_end(msg, hdr);
17304         return 0;
17305
17306  nla_put_failure:
17307         genlmsg_cancel(msg, hdr);
17308         return -EMSGSIZE;
17309 }
17310
17311 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17312                              struct wireless_dev *wdev)
17313 {
17314         struct sk_buff *msg;
17315
17316         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17317         if (!msg)
17318                 return;
17319
17320         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17321                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17322                 nlmsg_free(msg);
17323                 return;
17324         }
17325
17326         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17327                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17328 }
17329
17330 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17331                                        struct wireless_dev *wdev, bool aborted)
17332 {
17333         struct sk_buff *msg;
17334
17335         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17336         if (!msg)
17337                 return NULL;
17338
17339         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17340                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17341                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17342                 nlmsg_free(msg);
17343                 return NULL;
17344         }
17345
17346         return msg;
17347 }
17348
17349 /* send message created by nl80211_build_scan_msg() */
17350 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17351                            struct sk_buff *msg)
17352 {
17353         if (!msg)
17354                 return;
17355
17356         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17357                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17358 }
17359
17360 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17361 {
17362         struct sk_buff *msg;
17363
17364         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17365         if (!msg)
17366                 return;
17367
17368         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17369                 nlmsg_free(msg);
17370                 return;
17371         }
17372
17373         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17374                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17375 }
17376
17377 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17378                                           struct regulatory_request *request)
17379 {
17380         /* Userspace can always count this one always being set */
17381         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17382                 goto nla_put_failure;
17383
17384         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17385                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17386                                NL80211_REGDOM_TYPE_WORLD))
17387                         goto nla_put_failure;
17388         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17389                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17390                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17391                         goto nla_put_failure;
17392         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17393                    request->intersect) {
17394                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17395                                NL80211_REGDOM_TYPE_INTERSECTION))
17396                         goto nla_put_failure;
17397         } else {
17398                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17399                                NL80211_REGDOM_TYPE_COUNTRY) ||
17400                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17401                                    request->alpha2))
17402                         goto nla_put_failure;
17403         }
17404
17405         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17406                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17407
17408                 if (wiphy &&
17409                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17410                         goto nla_put_failure;
17411
17412                 if (wiphy &&
17413                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17414                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17415                         goto nla_put_failure;
17416         }
17417
17418         return true;
17419
17420 nla_put_failure:
17421         return false;
17422 }
17423
17424 /*
17425  * This can happen on global regulatory changes or device specific settings
17426  * based on custom regulatory domains.
17427  */
17428 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17429                                      struct regulatory_request *request)
17430 {
17431         struct sk_buff *msg;
17432         void *hdr;
17433
17434         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17435         if (!msg)
17436                 return;
17437
17438         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17439         if (!hdr)
17440                 goto nla_put_failure;
17441
17442         if (!nl80211_reg_change_event_fill(msg, request))
17443                 goto nla_put_failure;
17444
17445         genlmsg_end(msg, hdr);
17446
17447         rcu_read_lock();
17448         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17449                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17450         rcu_read_unlock();
17451
17452         return;
17453
17454 nla_put_failure:
17455         nlmsg_free(msg);
17456 }
17457
17458 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17459                                     struct net_device *netdev,
17460                                     const u8 *buf, size_t len,
17461                                     enum nl80211_commands cmd, gfp_t gfp,
17462                                     int uapsd_queues, const u8 *req_ies,
17463                                     size_t req_ies_len, bool reconnect)
17464 {
17465         struct sk_buff *msg;
17466         void *hdr;
17467
17468         msg = nlmsg_new(100 + len + req_ies_len, gfp);
17469         if (!msg)
17470                 return;
17471
17472         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17473         if (!hdr) {
17474                 nlmsg_free(msg);
17475                 return;
17476         }
17477
17478         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17479             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17480             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17481             (req_ies &&
17482              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17483                 goto nla_put_failure;
17484
17485         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17486                 goto nla_put_failure;
17487
17488         if (uapsd_queues >= 0) {
17489                 struct nlattr *nla_wmm =
17490                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17491                 if (!nla_wmm)
17492                         goto nla_put_failure;
17493
17494                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17495                                uapsd_queues))
17496                         goto nla_put_failure;
17497
17498                 nla_nest_end(msg, nla_wmm);
17499         }
17500
17501         genlmsg_end(msg, hdr);
17502
17503         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17504                                 NL80211_MCGRP_MLME, gfp);
17505         return;
17506
17507  nla_put_failure:
17508         nlmsg_free(msg);
17509 }
17510
17511 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17512                           struct net_device *netdev, const u8 *buf,
17513                           size_t len, gfp_t gfp)
17514 {
17515         nl80211_send_mlme_event(rdev, netdev, buf, len,
17516                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17517                                 false);
17518 }
17519
17520 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17521                            struct net_device *netdev,
17522                            struct cfg80211_rx_assoc_resp *data)
17523 {
17524         nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17525                                 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17526                                 data->uapsd_queues,
17527                                 data->req_ies, data->req_ies_len, false);
17528 }
17529
17530 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17531                          struct net_device *netdev, const u8 *buf,
17532                          size_t len, bool reconnect, gfp_t gfp)
17533 {
17534         nl80211_send_mlme_event(rdev, netdev, buf, len,
17535                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17536                                 reconnect);
17537 }
17538
17539 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17540                            struct net_device *netdev, const u8 *buf,
17541                            size_t len, bool reconnect, gfp_t gfp)
17542 {
17543         nl80211_send_mlme_event(rdev, netdev, buf, len,
17544                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
17545                                 reconnect);
17546 }
17547
17548 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17549                                   size_t len)
17550 {
17551         struct wireless_dev *wdev = dev->ieee80211_ptr;
17552         struct wiphy *wiphy = wdev->wiphy;
17553         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17554         const struct ieee80211_mgmt *mgmt = (void *)buf;
17555         u32 cmd;
17556
17557         if (WARN_ON(len < 2))
17558                 return;
17559
17560         if (ieee80211_is_deauth(mgmt->frame_control)) {
17561                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
17562         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
17563                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
17564         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
17565                 if (wdev->unprot_beacon_reported &&
17566                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
17567                         return;
17568                 cmd = NL80211_CMD_UNPROT_BEACON;
17569                 wdev->unprot_beacon_reported = jiffies;
17570         } else {
17571                 return;
17572         }
17573
17574         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
17575         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
17576                                 NULL, 0, false);
17577 }
17578 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
17579
17580 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
17581                                       struct net_device *netdev, int cmd,
17582                                       const u8 *addr, gfp_t gfp)
17583 {
17584         struct sk_buff *msg;
17585         void *hdr;
17586
17587         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17588         if (!msg)
17589                 return;
17590
17591         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17592         if (!hdr) {
17593                 nlmsg_free(msg);
17594                 return;
17595         }
17596
17597         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17598             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17599             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17600             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
17601                 goto nla_put_failure;
17602
17603         genlmsg_end(msg, hdr);
17604
17605         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17606                                 NL80211_MCGRP_MLME, gfp);
17607         return;
17608
17609  nla_put_failure:
17610         nlmsg_free(msg);
17611 }
17612
17613 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
17614                                struct net_device *netdev, const u8 *addr,
17615                                gfp_t gfp)
17616 {
17617         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
17618                                   addr, gfp);
17619 }
17620
17621 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
17622                                 struct net_device *netdev, const u8 *addr,
17623                                 gfp_t gfp)
17624 {
17625         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
17626                                   addr, gfp);
17627 }
17628
17629 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
17630                                  struct net_device *netdev,
17631                                  struct cfg80211_connect_resp_params *cr,
17632                                  gfp_t gfp)
17633 {
17634         struct sk_buff *msg;
17635         void *hdr;
17636         unsigned int link;
17637         size_t link_info_size = 0;
17638         const u8 *connected_addr = cr->valid_links ?
17639                                    cr->ap_mld_addr : cr->links[0].bssid;
17640
17641         if (cr->valid_links) {
17642                 for_each_valid_link(cr, link) {
17643                         /* Nested attribute header */
17644                         link_info_size += NLA_HDRLEN;
17645                         /* Link ID */
17646                         link_info_size += nla_total_size(sizeof(u8));
17647                         link_info_size += cr->links[link].addr ?
17648                                           nla_total_size(ETH_ALEN) : 0;
17649                         link_info_size += (cr->links[link].bssid ||
17650                                            cr->links[link].bss) ?
17651                                           nla_total_size(ETH_ALEN) : 0;
17652                 }
17653         }
17654
17655         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
17656                         cr->fils.kek_len + cr->fils.pmk_len +
17657                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
17658                         gfp);
17659         if (!msg)
17660                 return;
17661
17662         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
17663         if (!hdr) {
17664                 nlmsg_free(msg);
17665                 return;
17666         }
17667
17668         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17669             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17670             (connected_addr &&
17671              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
17672             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
17673                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
17674                         cr->status) ||
17675             (cr->status < 0 &&
17676              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17677               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
17678                           cr->timeout_reason))) ||
17679             (cr->req_ie &&
17680              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
17681             (cr->resp_ie &&
17682              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
17683                      cr->resp_ie)) ||
17684             (cr->fils.update_erp_next_seq_num &&
17685              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17686                          cr->fils.erp_next_seq_num)) ||
17687             (cr->status == WLAN_STATUS_SUCCESS &&
17688              ((cr->fils.kek &&
17689                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
17690                        cr->fils.kek)) ||
17691               (cr->fils.pmk &&
17692                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
17693               (cr->fils.pmkid &&
17694                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
17695                 goto nla_put_failure;
17696
17697         if (cr->valid_links) {
17698                 int i = 1;
17699                 struct nlattr *nested;
17700
17701                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17702                 if (!nested)
17703                         goto nla_put_failure;
17704
17705                 for_each_valid_link(cr, link) {
17706                         struct nlattr *nested_mlo_links;
17707                         const u8 *bssid = cr->links[link].bss ?
17708                                           cr->links[link].bss->bssid :
17709                                           cr->links[link].bssid;
17710
17711                         nested_mlo_links = nla_nest_start(msg, i);
17712                         if (!nested_mlo_links)
17713                                 goto nla_put_failure;
17714
17715                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17716                             (bssid &&
17717                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17718                             (cr->links[link].addr &&
17719                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17720                                      cr->links[link].addr)))
17721                                 goto nla_put_failure;
17722
17723                         nla_nest_end(msg, nested_mlo_links);
17724                         i++;
17725                 }
17726                 nla_nest_end(msg, nested);
17727         }
17728
17729         genlmsg_end(msg, hdr);
17730
17731         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17732                                 NL80211_MCGRP_MLME, gfp);
17733         return;
17734
17735  nla_put_failure:
17736         nlmsg_free(msg);
17737 }
17738
17739 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
17740                          struct net_device *netdev,
17741                          struct cfg80211_roam_info *info, gfp_t gfp)
17742 {
17743         struct sk_buff *msg;
17744         void *hdr;
17745         size_t link_info_size = 0;
17746         unsigned int link;
17747         const u8 *connected_addr = info->ap_mld_addr ?
17748                                    info->ap_mld_addr :
17749                                    (info->links[0].bss ?
17750                                     info->links[0].bss->bssid :
17751                                     info->links[0].bssid);
17752
17753         if (info->valid_links) {
17754                 for_each_valid_link(info, link) {
17755                         /* Nested attribute header */
17756                         link_info_size += NLA_HDRLEN;
17757                         /* Link ID */
17758                         link_info_size += nla_total_size(sizeof(u8));
17759                         link_info_size += info->links[link].addr ?
17760                                           nla_total_size(ETH_ALEN) : 0;
17761                         link_info_size += (info->links[link].bssid ||
17762                                            info->links[link].bss) ?
17763                                           nla_total_size(ETH_ALEN) : 0;
17764                 }
17765         }
17766
17767         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
17768                         info->fils.kek_len + info->fils.pmk_len +
17769                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
17770                         link_info_size, gfp);
17771         if (!msg)
17772                 return;
17773
17774         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
17775         if (!hdr) {
17776                 nlmsg_free(msg);
17777                 return;
17778         }
17779
17780         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17781             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17782             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
17783             (info->req_ie &&
17784              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
17785                      info->req_ie)) ||
17786             (info->resp_ie &&
17787              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
17788                      info->resp_ie)) ||
17789             (info->fils.update_erp_next_seq_num &&
17790              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17791                          info->fils.erp_next_seq_num)) ||
17792             (info->fils.kek &&
17793              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
17794                      info->fils.kek)) ||
17795             (info->fils.pmk &&
17796              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
17797             (info->fils.pmkid &&
17798              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
17799                 goto nla_put_failure;
17800
17801         if (info->valid_links) {
17802                 int i = 1;
17803                 struct nlattr *nested;
17804
17805                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17806                 if (!nested)
17807                         goto nla_put_failure;
17808
17809                 for_each_valid_link(info, link) {
17810                         struct nlattr *nested_mlo_links;
17811                         const u8 *bssid = info->links[link].bss ?
17812                                           info->links[link].bss->bssid :
17813                                           info->links[link].bssid;
17814
17815                         nested_mlo_links = nla_nest_start(msg, i);
17816                         if (!nested_mlo_links)
17817                                 goto nla_put_failure;
17818
17819                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17820                             (bssid &&
17821                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17822                             (info->links[link].addr &&
17823                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17824                                      info->links[link].addr)))
17825                                 goto nla_put_failure;
17826
17827                         nla_nest_end(msg, nested_mlo_links);
17828                         i++;
17829                 }
17830                 nla_nest_end(msg, nested);
17831         }
17832
17833         genlmsg_end(msg, hdr);
17834
17835         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17836                                 NL80211_MCGRP_MLME, gfp);
17837         return;
17838
17839  nla_put_failure:
17840         nlmsg_free(msg);
17841 }
17842
17843 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
17844                                   struct net_device *netdev, const u8 *bssid)
17845 {
17846         struct sk_buff *msg;
17847         void *hdr;
17848
17849         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17850         if (!msg)
17851                 return;
17852
17853         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
17854         if (!hdr) {
17855                 nlmsg_free(msg);
17856                 return;
17857         }
17858
17859         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17860             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17861             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17862                 goto nla_put_failure;
17863
17864         genlmsg_end(msg, hdr);
17865
17866         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17867                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17868         return;
17869
17870  nla_put_failure:
17871         nlmsg_free(msg);
17872 }
17873
17874 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
17875                                struct net_device *netdev, u16 reason,
17876                                const u8 *ie, size_t ie_len, bool from_ap)
17877 {
17878         struct sk_buff *msg;
17879         void *hdr;
17880
17881         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
17882         if (!msg)
17883                 return;
17884
17885         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
17886         if (!hdr) {
17887                 nlmsg_free(msg);
17888                 return;
17889         }
17890
17891         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17892             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17893             (reason &&
17894              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
17895             (from_ap &&
17896              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
17897             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
17898                 goto nla_put_failure;
17899
17900         genlmsg_end(msg, hdr);
17901
17902         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17903                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17904         return;
17905
17906  nla_put_failure:
17907         nlmsg_free(msg);
17908 }
17909
17910 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
17911                              struct net_device *netdev, const u8 *bssid,
17912                              gfp_t gfp)
17913 {
17914         struct sk_buff *msg;
17915         void *hdr;
17916
17917         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17918         if (!msg)
17919                 return;
17920
17921         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
17922         if (!hdr) {
17923                 nlmsg_free(msg);
17924                 return;
17925         }
17926
17927         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17928             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17929             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17930                 goto nla_put_failure;
17931
17932         genlmsg_end(msg, hdr);
17933
17934         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17935                                 NL80211_MCGRP_MLME, gfp);
17936         return;
17937
17938  nla_put_failure:
17939         nlmsg_free(msg);
17940 }
17941
17942 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
17943                                         const u8 *ie, u8 ie_len,
17944                                         int sig_dbm, gfp_t gfp)
17945 {
17946         struct wireless_dev *wdev = dev->ieee80211_ptr;
17947         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17948         struct sk_buff *msg;
17949         void *hdr;
17950
17951         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
17952                 return;
17953
17954         trace_cfg80211_notify_new_peer_candidate(dev, addr);
17955
17956         msg = nlmsg_new(100 + ie_len, gfp);
17957         if (!msg)
17958                 return;
17959
17960         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
17961         if (!hdr) {
17962                 nlmsg_free(msg);
17963                 return;
17964         }
17965
17966         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17967             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17968             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17969             (ie_len && ie &&
17970              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
17971             (sig_dbm &&
17972              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
17973                 goto nla_put_failure;
17974
17975         genlmsg_end(msg, hdr);
17976
17977         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17978                                 NL80211_MCGRP_MLME, gfp);
17979         return;
17980
17981  nla_put_failure:
17982         nlmsg_free(msg);
17983 }
17984 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
17985
17986 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
17987                                  struct net_device *netdev, const u8 *addr,
17988                                  enum nl80211_key_type key_type, int key_id,
17989                                  const u8 *tsc, gfp_t gfp)
17990 {
17991         struct sk_buff *msg;
17992         void *hdr;
17993
17994         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17995         if (!msg)
17996                 return;
17997
17998         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
17999         if (!hdr) {
18000                 nlmsg_free(msg);
18001                 return;
18002         }
18003
18004         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18005             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18006             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18007             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18008             (key_id != -1 &&
18009              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18010             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18011                 goto nla_put_failure;
18012
18013         genlmsg_end(msg, hdr);
18014
18015         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18016                                 NL80211_MCGRP_MLME, gfp);
18017         return;
18018
18019  nla_put_failure:
18020         nlmsg_free(msg);
18021 }
18022
18023 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18024                                     struct ieee80211_channel *channel_before,
18025                                     struct ieee80211_channel *channel_after)
18026 {
18027         struct sk_buff *msg;
18028         void *hdr;
18029         struct nlattr *nl_freq;
18030
18031         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18032         if (!msg)
18033                 return;
18034
18035         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18036         if (!hdr) {
18037                 nlmsg_free(msg);
18038                 return;
18039         }
18040
18041         /*
18042          * Since we are applying the beacon hint to a wiphy we know its
18043          * wiphy_idx is valid
18044          */
18045         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18046                 goto nla_put_failure;
18047
18048         /* Before */
18049         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18050         if (!nl_freq)
18051                 goto nla_put_failure;
18052
18053         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18054                 goto nla_put_failure;
18055         nla_nest_end(msg, nl_freq);
18056
18057         /* After */
18058         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18059         if (!nl_freq)
18060                 goto nla_put_failure;
18061
18062         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18063                 goto nla_put_failure;
18064         nla_nest_end(msg, nl_freq);
18065
18066         genlmsg_end(msg, hdr);
18067
18068         rcu_read_lock();
18069         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18070                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18071         rcu_read_unlock();
18072
18073         return;
18074
18075 nla_put_failure:
18076         nlmsg_free(msg);
18077 }
18078
18079 static void nl80211_send_remain_on_chan_event(
18080         int cmd, struct cfg80211_registered_device *rdev,
18081         struct wireless_dev *wdev, u64 cookie,
18082         struct ieee80211_channel *chan,
18083         unsigned int duration, gfp_t gfp)
18084 {
18085         struct sk_buff *msg;
18086         void *hdr;
18087
18088         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18089         if (!msg)
18090                 return;
18091
18092         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18093         if (!hdr) {
18094                 nlmsg_free(msg);
18095                 return;
18096         }
18097
18098         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18099             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18100                                          wdev->netdev->ifindex)) ||
18101             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18102                               NL80211_ATTR_PAD) ||
18103             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18104             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18105                         NL80211_CHAN_NO_HT) ||
18106             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18107                               NL80211_ATTR_PAD))
18108                 goto nla_put_failure;
18109
18110         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18111             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18112                 goto nla_put_failure;
18113
18114         genlmsg_end(msg, hdr);
18115
18116         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18117                                 NL80211_MCGRP_MLME, gfp);
18118         return;
18119
18120  nla_put_failure:
18121         nlmsg_free(msg);
18122 }
18123
18124 void cfg80211_assoc_comeback(struct net_device *netdev,
18125                              const u8 *ap_addr, u32 timeout)
18126 {
18127         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18128         struct wiphy *wiphy = wdev->wiphy;
18129         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18130         struct sk_buff *msg;
18131         void *hdr;
18132
18133         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18134
18135         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18136         if (!msg)
18137                 return;
18138
18139         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18140         if (!hdr) {
18141                 nlmsg_free(msg);
18142                 return;
18143         }
18144
18145         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18146             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18147             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18148             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18149                 goto nla_put_failure;
18150
18151         genlmsg_end(msg, hdr);
18152
18153         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18154                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18155         return;
18156
18157  nla_put_failure:
18158         nlmsg_free(msg);
18159 }
18160 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18161
18162 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18163                                struct ieee80211_channel *chan,
18164                                unsigned int duration, gfp_t gfp)
18165 {
18166         struct wiphy *wiphy = wdev->wiphy;
18167         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18168
18169         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18170         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18171                                           rdev, wdev, cookie, chan,
18172                                           duration, gfp);
18173 }
18174 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18175
18176 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18177                                         struct ieee80211_channel *chan,
18178                                         gfp_t gfp)
18179 {
18180         struct wiphy *wiphy = wdev->wiphy;
18181         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18182
18183         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18184         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18185                                           rdev, wdev, cookie, chan, 0, gfp);
18186 }
18187 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18188
18189 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18190                                         struct ieee80211_channel *chan,
18191                                         gfp_t gfp)
18192 {
18193         struct wiphy *wiphy = wdev->wiphy;
18194         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18195
18196         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18197         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18198                                           rdev, wdev, cookie, chan, 0, gfp);
18199 }
18200 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18201
18202 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18203                       struct station_info *sinfo, gfp_t gfp)
18204 {
18205         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18206         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18207         struct sk_buff *msg;
18208
18209         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18210
18211         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18212         if (!msg)
18213                 return;
18214
18215         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18216                                  rdev, dev, mac_addr, sinfo) < 0) {
18217                 nlmsg_free(msg);
18218                 return;
18219         }
18220
18221         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18222                                 NL80211_MCGRP_MLME, gfp);
18223 }
18224 EXPORT_SYMBOL(cfg80211_new_sta);
18225
18226 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18227                             struct station_info *sinfo, gfp_t gfp)
18228 {
18229         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18230         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18231         struct sk_buff *msg;
18232         struct station_info empty_sinfo = {};
18233
18234         if (!sinfo)
18235                 sinfo = &empty_sinfo;
18236
18237         trace_cfg80211_del_sta(dev, mac_addr);
18238
18239         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18240         if (!msg) {
18241                 cfg80211_sinfo_release_content(sinfo);
18242                 return;
18243         }
18244
18245         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18246                                  rdev, dev, mac_addr, sinfo) < 0) {
18247                 nlmsg_free(msg);
18248                 return;
18249         }
18250
18251         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18252                                 NL80211_MCGRP_MLME, gfp);
18253 }
18254 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18255
18256 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18257                           enum nl80211_connect_failed_reason reason,
18258                           gfp_t gfp)
18259 {
18260         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18261         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18262         struct sk_buff *msg;
18263         void *hdr;
18264
18265         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18266         if (!msg)
18267                 return;
18268
18269         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18270         if (!hdr) {
18271                 nlmsg_free(msg);
18272                 return;
18273         }
18274
18275         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18276             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18277             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18278                 goto nla_put_failure;
18279
18280         genlmsg_end(msg, hdr);
18281
18282         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18283                                 NL80211_MCGRP_MLME, gfp);
18284         return;
18285
18286  nla_put_failure:
18287         nlmsg_free(msg);
18288 }
18289 EXPORT_SYMBOL(cfg80211_conn_failed);
18290
18291 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18292                                        const u8 *addr, gfp_t gfp)
18293 {
18294         struct wireless_dev *wdev = dev->ieee80211_ptr;
18295         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18296         struct sk_buff *msg;
18297         void *hdr;
18298         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18299
18300         if (!nlportid)
18301                 return false;
18302
18303         msg = nlmsg_new(100, gfp);
18304         if (!msg)
18305                 return true;
18306
18307         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18308         if (!hdr) {
18309                 nlmsg_free(msg);
18310                 return true;
18311         }
18312
18313         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18314             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18315             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18316                 goto nla_put_failure;
18317
18318         genlmsg_end(msg, hdr);
18319         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18320         return true;
18321
18322  nla_put_failure:
18323         nlmsg_free(msg);
18324         return true;
18325 }
18326
18327 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18328                                 const u8 *addr, gfp_t gfp)
18329 {
18330         struct wireless_dev *wdev = dev->ieee80211_ptr;
18331         bool ret;
18332
18333         trace_cfg80211_rx_spurious_frame(dev, addr);
18334
18335         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18336                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18337                 trace_cfg80211_return_bool(false);
18338                 return false;
18339         }
18340         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18341                                          addr, gfp);
18342         trace_cfg80211_return_bool(ret);
18343         return ret;
18344 }
18345 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18346
18347 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18348                                         const u8 *addr, gfp_t gfp)
18349 {
18350         struct wireless_dev *wdev = dev->ieee80211_ptr;
18351         bool ret;
18352
18353         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18354
18355         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18356                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18357                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18358                 trace_cfg80211_return_bool(false);
18359                 return false;
18360         }
18361         ret = __nl80211_unexpected_frame(dev,
18362                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18363                                          addr, gfp);
18364         trace_cfg80211_return_bool(ret);
18365         return ret;
18366 }
18367 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18368
18369 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18370                       struct wireless_dev *wdev, u32 nlportid,
18371                       struct cfg80211_rx_info *info, gfp_t gfp)
18372 {
18373         struct net_device *netdev = wdev->netdev;
18374         struct sk_buff *msg;
18375         void *hdr;
18376
18377         msg = nlmsg_new(100 + info->len, gfp);
18378         if (!msg)
18379                 return -ENOMEM;
18380
18381         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18382         if (!hdr) {
18383                 nlmsg_free(msg);
18384                 return -ENOMEM;
18385         }
18386
18387         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18388             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18389                                         netdev->ifindex)) ||
18390             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18391                               NL80211_ATTR_PAD) ||
18392             (info->have_link_id &&
18393              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18394             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18395             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18396             (info->sig_dbm &&
18397              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18398             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18399             (info->flags &&
18400              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18401             (info->rx_tstamp && nla_put_u64_64bit(msg,
18402                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18403                                                   info->rx_tstamp,
18404                                                   NL80211_ATTR_PAD)) ||
18405             (info->ack_tstamp && nla_put_u64_64bit(msg,
18406                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18407                                                    info->ack_tstamp,
18408                                                    NL80211_ATTR_PAD)))
18409                 goto nla_put_failure;
18410
18411         genlmsg_end(msg, hdr);
18412
18413         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18414
18415  nla_put_failure:
18416         nlmsg_free(msg);
18417         return -ENOBUFS;
18418 }
18419
18420 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18421                                     struct cfg80211_tx_status *status,
18422                                     gfp_t gfp, enum nl80211_commands command)
18423 {
18424         struct wiphy *wiphy = wdev->wiphy;
18425         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18426         struct net_device *netdev = wdev->netdev;
18427         struct sk_buff *msg;
18428         void *hdr;
18429
18430         if (command == NL80211_CMD_FRAME_TX_STATUS)
18431                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18432                                               status->ack);
18433         else
18434                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18435                                                       status->ack);
18436
18437         msg = nlmsg_new(100 + status->len, gfp);
18438         if (!msg)
18439                 return;
18440
18441         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18442         if (!hdr) {
18443                 nlmsg_free(msg);
18444                 return;
18445         }
18446
18447         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18448             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18449                                    netdev->ifindex)) ||
18450             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18451                               NL80211_ATTR_PAD) ||
18452             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18453             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18454                               NL80211_ATTR_PAD) ||
18455             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18456             (status->tx_tstamp &&
18457              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18458                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18459             (status->ack_tstamp &&
18460              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18461                                status->ack_tstamp, NL80211_ATTR_PAD)))
18462                 goto nla_put_failure;
18463
18464         genlmsg_end(msg, hdr);
18465
18466         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18467                                 NL80211_MCGRP_MLME, gfp);
18468         return;
18469
18470 nla_put_failure:
18471         nlmsg_free(msg);
18472 }
18473
18474 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
18475                                      const u8 *buf, size_t len, bool ack,
18476                                      gfp_t gfp)
18477 {
18478         struct cfg80211_tx_status status = {
18479                 .cookie = cookie,
18480                 .buf = buf,
18481                 .len = len,
18482                 .ack = ack
18483         };
18484
18485         nl80211_frame_tx_status(wdev, &status, gfp,
18486                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
18487 }
18488 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
18489
18490 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
18491                                  struct cfg80211_tx_status *status, gfp_t gfp)
18492 {
18493         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
18494 }
18495 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
18496
18497 static int __nl80211_rx_control_port(struct net_device *dev,
18498                                      struct sk_buff *skb,
18499                                      bool unencrypted, gfp_t gfp)
18500 {
18501         struct wireless_dev *wdev = dev->ieee80211_ptr;
18502         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18503         struct ethhdr *ehdr = eth_hdr(skb);
18504         const u8 *addr = ehdr->h_source;
18505         u16 proto = be16_to_cpu(skb->protocol);
18506         struct sk_buff *msg;
18507         void *hdr;
18508         struct nlattr *frame;
18509
18510         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
18511
18512         if (!nlportid)
18513                 return -ENOENT;
18514
18515         msg = nlmsg_new(100 + skb->len, gfp);
18516         if (!msg)
18517                 return -ENOMEM;
18518
18519         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
18520         if (!hdr) {
18521                 nlmsg_free(msg);
18522                 return -ENOBUFS;
18523         }
18524
18525         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18526             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18527             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18528                               NL80211_ATTR_PAD) ||
18529             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18530             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
18531             (unencrypted && nla_put_flag(msg,
18532                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
18533                 goto nla_put_failure;
18534
18535         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
18536         if (!frame)
18537                 goto nla_put_failure;
18538
18539         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
18540         genlmsg_end(msg, hdr);
18541
18542         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18543
18544  nla_put_failure:
18545         nlmsg_free(msg);
18546         return -ENOBUFS;
18547 }
18548
18549 bool cfg80211_rx_control_port(struct net_device *dev,
18550                               struct sk_buff *skb, bool unencrypted)
18551 {
18552         int ret;
18553
18554         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
18555         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
18556         trace_cfg80211_return_bool(ret == 0);
18557         return ret == 0;
18558 }
18559 EXPORT_SYMBOL(cfg80211_rx_control_port);
18560
18561 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
18562                                             const char *mac, gfp_t gfp)
18563 {
18564         struct wireless_dev *wdev = dev->ieee80211_ptr;
18565         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18566         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18567         void **cb;
18568
18569         if (!msg)
18570                 return NULL;
18571
18572         cb = (void **)msg->cb;
18573
18574         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
18575         if (!cb[0]) {
18576                 nlmsg_free(msg);
18577                 return NULL;
18578         }
18579
18580         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18581             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18582                 goto nla_put_failure;
18583
18584         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
18585                 goto nla_put_failure;
18586
18587         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
18588         if (!cb[1])
18589                 goto nla_put_failure;
18590
18591         cb[2] = rdev;
18592
18593         return msg;
18594  nla_put_failure:
18595         nlmsg_free(msg);
18596         return NULL;
18597 }
18598
18599 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
18600 {
18601         void **cb = (void **)msg->cb;
18602         struct cfg80211_registered_device *rdev = cb[2];
18603
18604         nla_nest_end(msg, cb[1]);
18605         genlmsg_end(msg, cb[0]);
18606
18607         memset(msg->cb, 0, sizeof(msg->cb));
18608
18609         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18610                                 NL80211_MCGRP_MLME, gfp);
18611 }
18612
18613 void cfg80211_cqm_rssi_notify(struct net_device *dev,
18614                               enum nl80211_cqm_rssi_threshold_event rssi_event,
18615                               s32 rssi_level, gfp_t gfp)
18616 {
18617         struct sk_buff *msg;
18618         struct wireless_dev *wdev = dev->ieee80211_ptr;
18619         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18620
18621         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
18622
18623         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
18624                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
18625                 return;
18626
18627         if (wdev->cqm_config) {
18628                 wdev->cqm_config->last_rssi_event_value = rssi_level;
18629
18630                 cfg80211_cqm_rssi_update(rdev, dev);
18631
18632                 if (rssi_level == 0)
18633                         rssi_level = wdev->cqm_config->last_rssi_event_value;
18634         }
18635
18636         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18637         if (!msg)
18638                 return;
18639
18640         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
18641                         rssi_event))
18642                 goto nla_put_failure;
18643
18644         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
18645                                       rssi_level))
18646                 goto nla_put_failure;
18647
18648         cfg80211_send_cqm(msg, gfp);
18649
18650         return;
18651
18652  nla_put_failure:
18653         nlmsg_free(msg);
18654 }
18655 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
18656
18657 void cfg80211_cqm_txe_notify(struct net_device *dev,
18658                              const u8 *peer, u32 num_packets,
18659                              u32 rate, u32 intvl, gfp_t gfp)
18660 {
18661         struct sk_buff *msg;
18662
18663         msg = cfg80211_prepare_cqm(dev, peer, gfp);
18664         if (!msg)
18665                 return;
18666
18667         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
18668                 goto nla_put_failure;
18669
18670         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
18671                 goto nla_put_failure;
18672
18673         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
18674                 goto nla_put_failure;
18675
18676         cfg80211_send_cqm(msg, gfp);
18677         return;
18678
18679  nla_put_failure:
18680         nlmsg_free(msg);
18681 }
18682 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
18683
18684 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
18685                                  const u8 *peer, u32 num_packets, gfp_t gfp)
18686 {
18687         struct sk_buff *msg;
18688
18689         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
18690
18691         msg = cfg80211_prepare_cqm(dev, peer, gfp);
18692         if (!msg)
18693                 return;
18694
18695         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
18696                 goto nla_put_failure;
18697
18698         cfg80211_send_cqm(msg, gfp);
18699         return;
18700
18701  nla_put_failure:
18702         nlmsg_free(msg);
18703 }
18704 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
18705
18706 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
18707 {
18708         struct sk_buff *msg;
18709
18710         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18711         if (!msg)
18712                 return;
18713
18714         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
18715                 goto nla_put_failure;
18716
18717         cfg80211_send_cqm(msg, gfp);
18718         return;
18719
18720  nla_put_failure:
18721         nlmsg_free(msg);
18722 }
18723 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
18724
18725 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
18726                                      struct net_device *netdev, const u8 *bssid,
18727                                      const u8 *replay_ctr, gfp_t gfp)
18728 {
18729         struct sk_buff *msg;
18730         struct nlattr *rekey_attr;
18731         void *hdr;
18732
18733         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18734         if (!msg)
18735                 return;
18736
18737         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
18738         if (!hdr) {
18739                 nlmsg_free(msg);
18740                 return;
18741         }
18742
18743         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18744             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18745             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18746                 goto nla_put_failure;
18747
18748         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
18749         if (!rekey_attr)
18750                 goto nla_put_failure;
18751
18752         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
18753                     NL80211_REPLAY_CTR_LEN, replay_ctr))
18754                 goto nla_put_failure;
18755
18756         nla_nest_end(msg, rekey_attr);
18757
18758         genlmsg_end(msg, hdr);
18759
18760         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18761                                 NL80211_MCGRP_MLME, gfp);
18762         return;
18763
18764  nla_put_failure:
18765         nlmsg_free(msg);
18766 }
18767
18768 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
18769                                const u8 *replay_ctr, gfp_t gfp)
18770 {
18771         struct wireless_dev *wdev = dev->ieee80211_ptr;
18772         struct wiphy *wiphy = wdev->wiphy;
18773         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18774
18775         trace_cfg80211_gtk_rekey_notify(dev, bssid);
18776         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
18777 }
18778 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
18779
18780 static void
18781 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
18782                                struct net_device *netdev, int index,
18783                                const u8 *bssid, bool preauth, gfp_t gfp)
18784 {
18785         struct sk_buff *msg;
18786         struct nlattr *attr;
18787         void *hdr;
18788
18789         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18790         if (!msg)
18791                 return;
18792
18793         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
18794         if (!hdr) {
18795                 nlmsg_free(msg);
18796                 return;
18797         }
18798
18799         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18800             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
18801                 goto nla_put_failure;
18802
18803         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
18804         if (!attr)
18805                 goto nla_put_failure;
18806
18807         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
18808             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
18809             (preauth &&
18810              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
18811                 goto nla_put_failure;
18812
18813         nla_nest_end(msg, attr);
18814
18815         genlmsg_end(msg, hdr);
18816
18817         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18818                                 NL80211_MCGRP_MLME, gfp);
18819         return;
18820
18821  nla_put_failure:
18822         nlmsg_free(msg);
18823 }
18824
18825 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
18826                                      const u8 *bssid, bool preauth, gfp_t gfp)
18827 {
18828         struct wireless_dev *wdev = dev->ieee80211_ptr;
18829         struct wiphy *wiphy = wdev->wiphy;
18830         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18831
18832         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
18833         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
18834 }
18835 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
18836
18837 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
18838                                      struct net_device *netdev,
18839                                      struct cfg80211_chan_def *chandef,
18840                                      gfp_t gfp,
18841                                      enum nl80211_commands notif,
18842                                      u8 count, bool quiet)
18843 {
18844         struct sk_buff *msg;
18845         void *hdr;
18846
18847         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18848         if (!msg)
18849                 return;
18850
18851         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
18852         if (!hdr) {
18853                 nlmsg_free(msg);
18854                 return;
18855         }
18856
18857         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
18858                 goto nla_put_failure;
18859
18860         if (nl80211_send_chandef(msg, chandef))
18861                 goto nla_put_failure;
18862
18863         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
18864                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
18865                         goto nla_put_failure;
18866                 if (quiet &&
18867                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
18868                         goto nla_put_failure;
18869         }
18870
18871         genlmsg_end(msg, hdr);
18872
18873         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18874                                 NL80211_MCGRP_MLME, gfp);
18875         return;
18876
18877  nla_put_failure:
18878         nlmsg_free(msg);
18879 }
18880
18881 void cfg80211_ch_switch_notify(struct net_device *dev,
18882                                struct cfg80211_chan_def *chandef,
18883                                unsigned int link_id)
18884 {
18885         struct wireless_dev *wdev = dev->ieee80211_ptr;
18886         struct wiphy *wiphy = wdev->wiphy;
18887         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18888
18889         ASSERT_WDEV_LOCK(wdev);
18890         WARN_INVALID_LINK_ID(wdev, link_id);
18891
18892         trace_cfg80211_ch_switch_notify(dev, chandef, link_id);
18893
18894         switch (wdev->iftype) {
18895         case NL80211_IFTYPE_STATION:
18896         case NL80211_IFTYPE_P2P_CLIENT:
18897                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
18898                         cfg80211_update_assoc_bss_entry(wdev, link_id,
18899                                                         chandef->chan);
18900                 break;
18901         case NL80211_IFTYPE_MESH_POINT:
18902                 wdev->u.mesh.chandef = *chandef;
18903                 wdev->u.mesh.preset_chandef = *chandef;
18904                 break;
18905         case NL80211_IFTYPE_AP:
18906         case NL80211_IFTYPE_P2P_GO:
18907                 wdev->links[link_id].ap.chandef = *chandef;
18908                 break;
18909         case NL80211_IFTYPE_ADHOC:
18910                 wdev->u.ibss.chandef = *chandef;
18911                 break;
18912         default:
18913                 WARN_ON(1);
18914                 break;
18915         }
18916
18917         cfg80211_sched_dfs_chan_update(rdev);
18918
18919         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
18920                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
18921 }
18922 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
18923
18924 void cfg80211_ch_switch_started_notify(struct net_device *dev,
18925                                        struct cfg80211_chan_def *chandef,
18926                                        u8 count, bool quiet)
18927 {
18928         struct wireless_dev *wdev = dev->ieee80211_ptr;
18929         struct wiphy *wiphy = wdev->wiphy;
18930         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18931
18932         trace_cfg80211_ch_switch_started_notify(dev, chandef);
18933
18934         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
18935                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
18936                                  count, quiet);
18937 }
18938 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
18939
18940 int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
18941                               enum nl80211_commands cmd, u8 count,
18942                               u64 color_bitmap)
18943 {
18944         struct wireless_dev *wdev = dev->ieee80211_ptr;
18945         struct wiphy *wiphy = wdev->wiphy;
18946         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18947         struct sk_buff *msg;
18948         void *hdr;
18949
18950         ASSERT_WDEV_LOCK(wdev);
18951
18952         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
18953
18954         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18955         if (!msg)
18956                 return -ENOMEM;
18957
18958         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18959         if (!hdr)
18960                 goto nla_put_failure;
18961
18962         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18963                 goto nla_put_failure;
18964
18965         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
18966             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
18967                 goto nla_put_failure;
18968
18969         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
18970             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
18971                               color_bitmap, NL80211_ATTR_PAD))
18972                 goto nla_put_failure;
18973
18974         genlmsg_end(msg, hdr);
18975
18976         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
18977                                        msg, 0, NL80211_MCGRP_MLME, gfp);
18978
18979 nla_put_failure:
18980         nlmsg_free(msg);
18981         return -EINVAL;
18982 }
18983 EXPORT_SYMBOL(cfg80211_bss_color_notify);
18984
18985 void
18986 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
18987                      const struct cfg80211_chan_def *chandef,
18988                      enum nl80211_radar_event event,
18989                      struct net_device *netdev, gfp_t gfp)
18990 {
18991         struct sk_buff *msg;
18992         void *hdr;
18993
18994         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18995         if (!msg)
18996                 return;
18997
18998         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
18999         if (!hdr) {
19000                 nlmsg_free(msg);
19001                 return;
19002         }
19003
19004         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19005                 goto nla_put_failure;
19006
19007         /* NOP and radar events don't need a netdev parameter */
19008         if (netdev) {
19009                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19010
19011                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19012                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19013                                       NL80211_ATTR_PAD))
19014                         goto nla_put_failure;
19015         }
19016
19017         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19018                 goto nla_put_failure;
19019
19020         if (nl80211_send_chandef(msg, chandef))
19021                 goto nla_put_failure;
19022
19023         genlmsg_end(msg, hdr);
19024
19025         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19026                                 NL80211_MCGRP_MLME, gfp);
19027         return;
19028
19029  nla_put_failure:
19030         nlmsg_free(msg);
19031 }
19032
19033 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19034                                        struct sta_opmode_info *sta_opmode,
19035                                        gfp_t gfp)
19036 {
19037         struct sk_buff *msg;
19038         struct wireless_dev *wdev = dev->ieee80211_ptr;
19039         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19040         void *hdr;
19041
19042         if (WARN_ON(!mac))
19043                 return;
19044
19045         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19046         if (!msg)
19047                 return;
19048
19049         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19050         if (!hdr) {
19051                 nlmsg_free(msg);
19052                 return;
19053         }
19054
19055         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19056                 goto nla_put_failure;
19057
19058         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19059                 goto nla_put_failure;
19060
19061         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19062                 goto nla_put_failure;
19063
19064         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19065             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19066                 goto nla_put_failure;
19067
19068         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19069             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19070                 goto nla_put_failure;
19071
19072         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19073             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19074                 goto nla_put_failure;
19075
19076         genlmsg_end(msg, hdr);
19077
19078         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19079                                 NL80211_MCGRP_MLME, gfp);
19080
19081         return;
19082
19083 nla_put_failure:
19084         nlmsg_free(msg);
19085 }
19086 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19087
19088 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19089                            u64 cookie, bool acked, s32 ack_signal,
19090                            bool is_valid_ack_signal, gfp_t gfp)
19091 {
19092         struct wireless_dev *wdev = dev->ieee80211_ptr;
19093         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19094         struct sk_buff *msg;
19095         void *hdr;
19096
19097         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19098
19099         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19100
19101         if (!msg)
19102                 return;
19103
19104         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19105         if (!hdr) {
19106                 nlmsg_free(msg);
19107                 return;
19108         }
19109
19110         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19111             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19112             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19113             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19114                               NL80211_ATTR_PAD) ||
19115             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19116             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19117                                                 ack_signal)))
19118                 goto nla_put_failure;
19119
19120         genlmsg_end(msg, hdr);
19121
19122         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19123                                 NL80211_MCGRP_MLME, gfp);
19124         return;
19125
19126  nla_put_failure:
19127         nlmsg_free(msg);
19128 }
19129 EXPORT_SYMBOL(cfg80211_probe_status);
19130
19131 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19132                                      size_t len, int freq, int sig_dbm)
19133 {
19134         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19135         struct sk_buff *msg;
19136         void *hdr;
19137         struct cfg80211_beacon_registration *reg;
19138
19139         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19140
19141         spin_lock_bh(&rdev->beacon_registrations_lock);
19142         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19143                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19144                 if (!msg) {
19145                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19146                         return;
19147                 }
19148
19149                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19150                 if (!hdr)
19151                         goto nla_put_failure;
19152
19153                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19154                     (freq &&
19155                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19156                                   KHZ_TO_MHZ(freq)) ||
19157                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19158                                   freq % 1000))) ||
19159                     (sig_dbm &&
19160                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19161                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19162                         goto nla_put_failure;
19163
19164                 genlmsg_end(msg, hdr);
19165
19166                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19167         }
19168         spin_unlock_bh(&rdev->beacon_registrations_lock);
19169         return;
19170
19171  nla_put_failure:
19172         spin_unlock_bh(&rdev->beacon_registrations_lock);
19173         nlmsg_free(msg);
19174 }
19175 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19176
19177 #ifdef CONFIG_PM
19178 static int cfg80211_net_detect_results(struct sk_buff *msg,
19179                                        struct cfg80211_wowlan_wakeup *wakeup)
19180 {
19181         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19182         struct nlattr *nl_results, *nl_match, *nl_freqs;
19183         int i, j;
19184
19185         nl_results = nla_nest_start_noflag(msg,
19186                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19187         if (!nl_results)
19188                 return -EMSGSIZE;
19189
19190         for (i = 0; i < nd->n_matches; i++) {
19191                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19192
19193                 nl_match = nla_nest_start_noflag(msg, i);
19194                 if (!nl_match)
19195                         break;
19196
19197                 /* The SSID attribute is optional in nl80211, but for
19198                  * simplicity reasons it's always present in the
19199                  * cfg80211 structure.  If a driver can't pass the
19200                  * SSID, that needs to be changed.  A zero length SSID
19201                  * is still a valid SSID (wildcard), so it cannot be
19202                  * used for this purpose.
19203                  */
19204                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19205                             match->ssid.ssid)) {
19206                         nla_nest_cancel(msg, nl_match);
19207                         goto out;
19208                 }
19209
19210                 if (match->n_channels) {
19211                         nl_freqs = nla_nest_start_noflag(msg,
19212                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19213                         if (!nl_freqs) {
19214                                 nla_nest_cancel(msg, nl_match);
19215                                 goto out;
19216                         }
19217
19218                         for (j = 0; j < match->n_channels; j++) {
19219                                 if (nla_put_u32(msg, j, match->channels[j])) {
19220                                         nla_nest_cancel(msg, nl_freqs);
19221                                         nla_nest_cancel(msg, nl_match);
19222                                         goto out;
19223                                 }
19224                         }
19225
19226                         nla_nest_end(msg, nl_freqs);
19227                 }
19228
19229                 nla_nest_end(msg, nl_match);
19230         }
19231
19232 out:
19233         nla_nest_end(msg, nl_results);
19234         return 0;
19235 }
19236
19237 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19238                                    struct cfg80211_wowlan_wakeup *wakeup,
19239                                    gfp_t gfp)
19240 {
19241         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19242         struct sk_buff *msg;
19243         void *hdr;
19244         int size = 200;
19245
19246         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19247
19248         if (wakeup)
19249                 size += wakeup->packet_present_len;
19250
19251         msg = nlmsg_new(size, gfp);
19252         if (!msg)
19253                 return;
19254
19255         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19256         if (!hdr)
19257                 goto free_msg;
19258
19259         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19260             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19261                               NL80211_ATTR_PAD))
19262                 goto free_msg;
19263
19264         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19265                                         wdev->netdev->ifindex))
19266                 goto free_msg;
19267
19268         if (wakeup) {
19269                 struct nlattr *reasons;
19270
19271                 reasons = nla_nest_start_noflag(msg,
19272                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19273                 if (!reasons)
19274                         goto free_msg;
19275
19276                 if (wakeup->disconnect &&
19277                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19278                         goto free_msg;
19279                 if (wakeup->magic_pkt &&
19280                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19281                         goto free_msg;
19282                 if (wakeup->gtk_rekey_failure &&
19283                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19284                         goto free_msg;
19285                 if (wakeup->eap_identity_req &&
19286                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19287                         goto free_msg;
19288                 if (wakeup->four_way_handshake &&
19289                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19290                         goto free_msg;
19291                 if (wakeup->rfkill_release &&
19292                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19293                         goto free_msg;
19294
19295                 if (wakeup->pattern_idx >= 0 &&
19296                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19297                                 wakeup->pattern_idx))
19298                         goto free_msg;
19299
19300                 if (wakeup->tcp_match &&
19301                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19302                         goto free_msg;
19303
19304                 if (wakeup->tcp_connlost &&
19305                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19306                         goto free_msg;
19307
19308                 if (wakeup->tcp_nomoretokens &&
19309                     nla_put_flag(msg,
19310                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19311                         goto free_msg;
19312
19313                 if (wakeup->packet) {
19314                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19315                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19316
19317                         if (!wakeup->packet_80211) {
19318                                 pkt_attr =
19319                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19320                                 len_attr =
19321                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19322                         }
19323
19324                         if (wakeup->packet_len &&
19325                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19326                                 goto free_msg;
19327
19328                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19329                                     wakeup->packet))
19330                                 goto free_msg;
19331                 }
19332
19333                 if (wakeup->net_detect &&
19334                     cfg80211_net_detect_results(msg, wakeup))
19335                                 goto free_msg;
19336
19337                 nla_nest_end(msg, reasons);
19338         }
19339
19340         genlmsg_end(msg, hdr);
19341
19342         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19343                                 NL80211_MCGRP_MLME, gfp);
19344         return;
19345
19346  free_msg:
19347         nlmsg_free(msg);
19348 }
19349 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19350 #endif
19351
19352 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19353                                 enum nl80211_tdls_operation oper,
19354                                 u16 reason_code, gfp_t gfp)
19355 {
19356         struct wireless_dev *wdev = dev->ieee80211_ptr;
19357         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19358         struct sk_buff *msg;
19359         void *hdr;
19360
19361         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19362                                          reason_code);
19363
19364         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19365         if (!msg)
19366                 return;
19367
19368         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19369         if (!hdr) {
19370                 nlmsg_free(msg);
19371                 return;
19372         }
19373
19374         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19375             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19376             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19377             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19378             (reason_code > 0 &&
19379              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19380                 goto nla_put_failure;
19381
19382         genlmsg_end(msg, hdr);
19383
19384         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19385                                 NL80211_MCGRP_MLME, gfp);
19386         return;
19387
19388  nla_put_failure:
19389         nlmsg_free(msg);
19390 }
19391 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19392
19393 static int nl80211_netlink_notify(struct notifier_block * nb,
19394                                   unsigned long state,
19395                                   void *_notify)
19396 {
19397         struct netlink_notify *notify = _notify;
19398         struct cfg80211_registered_device *rdev;
19399         struct wireless_dev *wdev;
19400         struct cfg80211_beacon_registration *reg, *tmp;
19401
19402         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19403                 return NOTIFY_DONE;
19404
19405         rcu_read_lock();
19406
19407         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19408                 struct cfg80211_sched_scan_request *sched_scan_req;
19409
19410                 list_for_each_entry_rcu(sched_scan_req,
19411                                         &rdev->sched_scan_req_list,
19412                                         list) {
19413                         if (sched_scan_req->owner_nlportid == notify->portid) {
19414                                 sched_scan_req->nl_owner_dead = true;
19415                                 schedule_work(&rdev->sched_scan_stop_wk);
19416                         }
19417                 }
19418
19419                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19420                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19421
19422                         if (wdev->owner_nlportid == notify->portid) {
19423                                 wdev->nl_owner_dead = true;
19424                                 schedule_work(&rdev->destroy_work);
19425                         } else if (wdev->conn_owner_nlportid == notify->portid) {
19426                                 schedule_work(&wdev->disconnect_wk);
19427                         }
19428
19429                         cfg80211_release_pmsr(wdev, notify->portid);
19430                 }
19431
19432                 spin_lock_bh(&rdev->beacon_registrations_lock);
19433                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
19434                                          list) {
19435                         if (reg->nlportid == notify->portid) {
19436                                 list_del(&reg->list);
19437                                 kfree(reg);
19438                                 break;
19439                         }
19440                 }
19441                 spin_unlock_bh(&rdev->beacon_registrations_lock);
19442         }
19443
19444         rcu_read_unlock();
19445
19446         /*
19447          * It is possible that the user space process that is controlling the
19448          * indoor setting disappeared, so notify the regulatory core.
19449          */
19450         regulatory_netlink_notify(notify->portid);
19451         return NOTIFY_OK;
19452 }
19453
19454 static struct notifier_block nl80211_netlink_notifier = {
19455         .notifier_call = nl80211_netlink_notify,
19456 };
19457
19458 void cfg80211_ft_event(struct net_device *netdev,
19459                        struct cfg80211_ft_event_params *ft_event)
19460 {
19461         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19462         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19463         struct sk_buff *msg;
19464         void *hdr;
19465
19466         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
19467
19468         if (!ft_event->target_ap)
19469                 return;
19470
19471         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
19472                         GFP_KERNEL);
19473         if (!msg)
19474                 return;
19475
19476         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
19477         if (!hdr)
19478                 goto out;
19479
19480         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19481             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19482             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
19483                 goto out;
19484
19485         if (ft_event->ies &&
19486             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
19487                 goto out;
19488         if (ft_event->ric_ies &&
19489             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
19490                     ft_event->ric_ies))
19491                 goto out;
19492
19493         genlmsg_end(msg, hdr);
19494
19495         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19496                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19497         return;
19498  out:
19499         nlmsg_free(msg);
19500 }
19501 EXPORT_SYMBOL(cfg80211_ft_event);
19502
19503 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
19504 {
19505         struct cfg80211_registered_device *rdev;
19506         struct sk_buff *msg;
19507         void *hdr;
19508         u32 nlportid;
19509
19510         rdev = wiphy_to_rdev(wdev->wiphy);
19511         if (!rdev->crit_proto_nlportid)
19512                 return;
19513
19514         nlportid = rdev->crit_proto_nlportid;
19515         rdev->crit_proto_nlportid = 0;
19516
19517         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19518         if (!msg)
19519                 return;
19520
19521         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
19522         if (!hdr)
19523                 goto nla_put_failure;
19524
19525         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19526             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19527                               NL80211_ATTR_PAD))
19528                 goto nla_put_failure;
19529
19530         genlmsg_end(msg, hdr);
19531
19532         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19533         return;
19534
19535  nla_put_failure:
19536         nlmsg_free(msg);
19537 }
19538 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
19539
19540 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
19541 {
19542         struct wiphy *wiphy = wdev->wiphy;
19543         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19544         struct sk_buff *msg;
19545         void *hdr;
19546
19547         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19548         if (!msg)
19549                 return;
19550
19551         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
19552         if (!hdr)
19553                 goto out;
19554
19555         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19556             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
19557             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19558                               NL80211_ATTR_PAD))
19559                 goto out;
19560
19561         genlmsg_end(msg, hdr);
19562
19563         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
19564                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19565         return;
19566  out:
19567         nlmsg_free(msg);
19568 }
19569
19570 int cfg80211_external_auth_request(struct net_device *dev,
19571                                    struct cfg80211_external_auth_params *params,
19572                                    gfp_t gfp)
19573 {
19574         struct wireless_dev *wdev = dev->ieee80211_ptr;
19575         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19576         struct sk_buff *msg;
19577         void *hdr;
19578
19579         if (!wdev->conn_owner_nlportid)
19580                 return -EINVAL;
19581
19582         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19583         if (!msg)
19584                 return -ENOMEM;
19585
19586         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
19587         if (!hdr)
19588                 goto nla_put_failure;
19589
19590         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19591             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19592             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
19593             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
19594                         params->action) ||
19595             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
19596             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
19597                     params->ssid.ssid))
19598                 goto nla_put_failure;
19599
19600         genlmsg_end(msg, hdr);
19601         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
19602                         wdev->conn_owner_nlportid);
19603         return 0;
19604
19605  nla_put_failure:
19606         nlmsg_free(msg);
19607         return -ENOBUFS;
19608 }
19609 EXPORT_SYMBOL(cfg80211_external_auth_request);
19610
19611 void cfg80211_update_owe_info_event(struct net_device *netdev,
19612                                     struct cfg80211_update_owe_info *owe_info,
19613                                     gfp_t gfp)
19614 {
19615         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19616         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19617         struct sk_buff *msg;
19618         void *hdr;
19619
19620         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
19621
19622         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19623         if (!msg)
19624                 return;
19625
19626         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
19627         if (!hdr)
19628                 goto nla_put_failure;
19629
19630         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19631             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19632             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
19633                 goto nla_put_failure;
19634
19635         if (!owe_info->ie_len ||
19636             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
19637                 goto nla_put_failure;
19638
19639         genlmsg_end(msg, hdr);
19640
19641         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19642                                 NL80211_MCGRP_MLME, gfp);
19643         return;
19644
19645 nla_put_failure:
19646         genlmsg_cancel(msg, hdr);
19647         nlmsg_free(msg);
19648 }
19649 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
19650
19651 /* initialisation/exit functions */
19652
19653 int __init nl80211_init(void)
19654 {
19655         int err;
19656
19657         err = genl_register_family(&nl80211_fam);
19658         if (err)
19659                 return err;
19660
19661         err = netlink_register_notifier(&nl80211_netlink_notifier);
19662         if (err)
19663                 goto err_out;
19664
19665         return 0;
19666  err_out:
19667         genl_unregister_family(&nl80211_fam);
19668         return err;
19669 }
19670
19671 void nl80211_exit(void)
19672 {
19673         netlink_unregister_notifier(&nl80211_netlink_notifier);
19674         genl_unregister_family(&nl80211_fam);
19675 }