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) 2018-2021 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 /* policy for the attributes */
 289 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 290
 291 static const struct nla_policy
 292 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 293         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 294         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 295                                         .len = U8_MAX },
 296         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 297                                              .len = U8_MAX },
 298 };
 299
 300 static const struct nla_policy
 301 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 302         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 303         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 304         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 305                 NLA_POLICY_MAX(NLA_U8, 15),
 306         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 307         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 308                 NLA_POLICY_MAX(NLA_U8, 15),
 309         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 310                 NLA_POLICY_MAX(NLA_U8, 31),
 311         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 312         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 313         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 314         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 315         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 316         [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
 317 };
 318
 319 static const struct nla_policy
 320 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 321         [NL80211_PMSR_TYPE_FTM] =
 322                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 323 };
 324
 325 static const struct nla_policy
 326 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 327         [NL80211_PMSR_REQ_ATTR_DATA] =
 328                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 329         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 330 };
 331
 332 static const struct nla_policy
 333 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 334         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 335         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 336         [NL80211_PMSR_PEER_ATTR_REQ] =
 337                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 338         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 343         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 344         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 345         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 346         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 347         [NL80211_PMSR_ATTR_PEERS] =
 348                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 349 };
 350
 351 static const struct nla_policy
 352 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 353         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 354                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 355         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 356                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 357         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 358                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 359         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 360                 NLA_POLICY_EXACT_LEN(8),
 361         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 362                 NLA_POLICY_EXACT_LEN(8),
 363         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 364 };
 365
 366 static const struct nla_policy
 367 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 368         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 369         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 370         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 371 };
 372
 373 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 374         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 375                                     .len = NL80211_MAX_SUPP_RATES },
 376         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 377                                 .len = NL80211_MAX_SUPP_HT_RATES },
 378         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 379         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 380         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 381         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 382                                                    NL80211_RATE_INFO_HE_GI_0_8,
 383                                                    NL80211_RATE_INFO_HE_GI_3_2),
 384         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 385                                                    NL80211_RATE_INFO_HE_1XLTF,
 386                                                    NL80211_RATE_INFO_HE_4XLTF),
 387 };
 388
 389 static const struct nla_policy
 390 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 391         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 392         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 393         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 394         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 395         [NL80211_TID_CONFIG_ATTR_NOACK] =
 396                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 397         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 398         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 399         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 400                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 401         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 402                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 403         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 404                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 405         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 406                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 407         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 408                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 409 };
 410
 411 static const struct nla_policy
 412 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 413         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 414         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 415         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 416                         NLA_POLICY_RANGE(NLA_BINARY,
 417                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 418                                          IEEE80211_MAX_DATA_LEN),
 419 };
 420
 421 static const struct nla_policy
 422 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 423         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 424         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 425                                                        .len = IEEE80211_MAX_DATA_LEN }
 426 };
 427
 428 static const struct nla_policy
 429 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 430         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 431         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 432 };
 433
 434 static const struct nla_policy
 435 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 436         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 437         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 438 };
 439
 440 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 441         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 442         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 443         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 444                                       .len = 20-1 },
 445         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 446
 447         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 448         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 449         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 450                                                 NL80211_EDMG_CHANNELS_MIN,
 451                                                 NL80211_EDMG_CHANNELS_MAX),
 452         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 453                                                 NL80211_EDMG_BW_CONFIG_MIN,
 454                                                 NL80211_EDMG_BW_CONFIG_MAX),
 455
 456         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 457         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 458         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 459         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 460
 461         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 462         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 463         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 464         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 465         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 466         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 467
 468         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 469         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 470         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 471
 472         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 473         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 474
 475         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 476         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 477                                     .len = WLAN_MAX_KEY_LEN },
 478         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 479         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 480         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 481         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 482         [NL80211_ATTR_KEY_TYPE] =
 483                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 484
 485         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 486         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 487         [NL80211_ATTR_BEACON_HEAD] =
 488                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 489                                        IEEE80211_MAX_DATA_LEN),
 490         [NL80211_ATTR_BEACON_TAIL] =
 491                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 492                                        IEEE80211_MAX_DATA_LEN),
 493         [NL80211_ATTR_STA_AID] =
 494                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 495         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 496         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 497         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 498                                                .len = NL80211_MAX_SUPP_RATES },
 499         [NL80211_ATTR_STA_PLINK_ACTION] =
 500                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 501         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 502                 NLA_POLICY_RANGE(NLA_U8,
 503                                  NL80211_TX_POWER_AUTOMATIC,
 504                                  NL80211_TX_POWER_FIXED),
 505         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 506         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 507         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 508         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 509                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 510         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 511
 512         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 513         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 514
 515         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 516         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 517         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 518         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 519                                            .len = NL80211_MAX_SUPP_RATES },
 520         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 521
 522         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 523         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 524
 525         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 526
 527         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 528         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 529                                                    validate_ie_attr,
 530                                                    IEEE80211_MAX_DATA_LEN),
 531         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 532         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 533
 534         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 535                                 .len = IEEE80211_MAX_SSID_LEN },
 536         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 537         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 538         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 539         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 540         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 541                                                   NL80211_MFP_NO,
 542                                                   NL80211_MFP_OPTIONAL),
 543         [NL80211_ATTR_STA_FLAGS2] = {
 544                 .len = sizeof(struct nl80211_sta_flag_update),
 545         },
 546         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 547         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 548         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 549         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 550         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 551         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 552         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 553         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 554         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 555         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 556         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 557         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 558         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 559         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 560         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 561                                  .len = IEEE80211_MAX_DATA_LEN },
 562         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 563         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 564                                                    NL80211_PS_DISABLED,
 565                                                    NL80211_PS_ENABLED),
 566         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 567         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 568         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 569         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 570         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 571         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 572         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 573         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 574         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 575         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 576         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 577         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 578         [NL80211_ATTR_STA_PLINK_STATE] =
 579                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 580         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 581         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 582         [NL80211_ATTR_MESH_PEER_AID] =
 583                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 584         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 585         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 586         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 587         [NL80211_ATTR_HIDDEN_SSID] =
 588                 NLA_POLICY_RANGE(NLA_U32,
 589                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 590                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 591         [NL80211_ATTR_IE_PROBE_RESP] =
 592                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 593                                        IEEE80211_MAX_DATA_LEN),
 594         [NL80211_ATTR_IE_ASSOC_RESP] =
 595                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 596                                        IEEE80211_MAX_DATA_LEN),
 597         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 598         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 599         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 600         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 601         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 602         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 603         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 604         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 605         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 606         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 608                                       .len = IEEE80211_MAX_DATA_LEN },
 609         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 610         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 611         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 612                 .len = NL80211_HT_CAPABILITY_LEN
 613         },
 614         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 615         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 616         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 617         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 618         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 619
 620         /* need to include at least Auth Transaction and Status Code */
 621         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 622
 623         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 624         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 625         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 626         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 627         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 628                 NLA_POLICY_RANGE(NLA_U32,
 629                                  NL80211_MESH_POWER_UNKNOWN + 1,
 630                                  NL80211_MESH_POWER_MAX),
 631         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 632         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 633         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 634         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 635         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 636         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 637         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 638                 .len = NL80211_VHT_CAPABILITY_LEN,
 639         },
 640         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 641         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 642                                   .len = IEEE80211_MAX_DATA_LEN },
 643         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 644         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 645                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 646         [NL80211_ATTR_PEER_AID] =
 647                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 648         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 649         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 650         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 651         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 652         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 653         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 654         /*
 655          * The value of the Length field of the Supported Operating
 656          * Classes element is between 2 and 253.
 657          */
 658         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 659                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 660         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 661         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 662         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 663         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 664         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 665         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 666                                                   IEEE80211_QOS_MAP_LEN_MIN,
 667                                                   IEEE80211_QOS_MAP_LEN_MAX),
 668         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 669         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 670         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 671         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 672         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 673         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 674         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 675         [NL80211_ATTR_USER_PRIO] =
 676                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 677         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 678         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 679         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 680         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 681         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 682         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 683         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 684         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 685         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 686         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 687         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 688                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 689         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 690                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 691         },
 692         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 693         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 694         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 695         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 696         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 697                                     .len = FILS_MAX_KEK_LEN },
 698         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 699         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 700         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 701         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 702         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 703                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 704         },
 705         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 706         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 707                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 708         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 709                                           .len = FILS_ERP_MAX_REALM_LEN },
 710         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 711         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 712                                         .len = FILS_ERP_MAX_RRK_LEN },
 713         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 714         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 715         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 716         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 717         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 718
 719         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 720         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 721         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 722         [NL80211_ATTR_HE_CAPABILITY] =
 723                 NLA_POLICY_RANGE(NLA_BINARY,
 724                                  NL80211_HE_MIN_CAPABILITY_LEN,
 725                                  NL80211_HE_MAX_CAPABILITY_LEN),
 726         [NL80211_ATTR_FTM_RESPONDER] =
 727                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 728         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 729         [NL80211_ATTR_PEER_MEASUREMENTS] =
 730                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 731         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 732         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 733                                         .len = SAE_PASSWORD_MAX_LEN },
 734         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 735         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 736         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 737         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 738         [NL80211_ATTR_TID_CONFIG] =
 739                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 740         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 741         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 742         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 743         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 744         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 745         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 746         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 747                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 748         [NL80211_ATTR_FILS_DISCOVERY] =
 749                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 750         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 751                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 752         [NL80211_ATTR_S1G_CAPABILITY] =
 753                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 754         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 755                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 756         [NL80211_ATTR_SAE_PWE] =
 757                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 758                                  NL80211_SAE_PWE_BOTH),
 759         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 760         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 761         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 762 };
 763
 764 /* policy for the key attributes */
 765 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 766         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 767         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 768         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 769         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 770         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 771         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 772         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 773         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 774         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 775 };
 776
 777 /* policy for the key default flags */
 778 static const struct nla_policy
 779 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 780         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 781         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 782 };
 783
 784 #ifdef CONFIG_PM
 785 /* policy for WoWLAN attributes */
 786 static const struct nla_policy
 787 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 788         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 789         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 790         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 791         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 792         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 793         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 794         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 795         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 796         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 797         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 798 };
 799
 800 static const struct nla_policy
 801 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 802         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 803         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 804         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 805         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 806         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 807         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 808         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 809                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 810         },
 811         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 812                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 813         },
 814         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 815         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 816         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 817 };
 818 #endif /* CONFIG_PM */
 819
 820 /* policy for coalesce rule attributes */
 821 static const struct nla_policy
 822 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 823         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 824         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 825                 NLA_POLICY_RANGE(NLA_U32,
 826                                  NL80211_COALESCE_CONDITION_MATCH,
 827                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 828         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 829 };
 830
 831 /* policy for GTK rekey offload attributes */
 832 static const struct nla_policy
 833 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 834         [NL80211_REKEY_DATA_KEK] = {
 835                 .type = NLA_BINARY,
 836                 .len = NL80211_KEK_EXT_LEN
 837         },
 838         [NL80211_REKEY_DATA_KCK] = {
 839                 .type = NLA_BINARY,
 840                 .len = NL80211_KCK_EXT_LEN
 841         },
 842         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 843         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 844 };
 845
 846 static const struct nla_policy
 847 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 848         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 849         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 850         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 851         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 852 };
 853
 854 static const struct nla_policy
 855 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 856         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 857                                                  .len = IEEE80211_MAX_SSID_LEN },
 858         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 859         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 860         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 861                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 862 };
 863
 864 static const struct nla_policy
 865 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 866         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 867         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 868 };
 869
 870 static const struct nla_policy
 871 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 872         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 873         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 874         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 875                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 876         },
 877 };
 878
 879 /* policy for NAN function attributes */
 880 static const struct nla_policy
 881 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 882         [NL80211_NAN_FUNC_TYPE] =
 883                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 884         [NL80211_NAN_FUNC_SERVICE_ID] = {
 885                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 886         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 887         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 888         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 889         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 890         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 891         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 892         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 893         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 894         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 895                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 896         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 897         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 898         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 899         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 900         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 901 };
 902
 903 /* policy for Service Response Filter attributes */
 904 static const struct nla_policy
 905 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 906         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 907         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 908                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 909         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 910         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 911 };
 912
 913 /* policy for packet pattern attributes */
 914 static const struct nla_policy
 915 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 916         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 917         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 918         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 919 };
 920
 921 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 922                               struct cfg80211_registered_device **rdev,
 923                               struct wireless_dev **wdev)
 924 {
 925         int err;
 926
 927         if (!cb->args[0]) {
 928                 struct nlattr **attrbuf;
 929
 930                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 931                                   GFP_KERNEL);
 932                 if (!attrbuf)
 933                         return -ENOMEM;
 934
 935                 err = nlmsg_parse_deprecated(cb->nlh,
 936                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 937                                              attrbuf, nl80211_fam.maxattr,
 938                                              nl80211_policy, NULL);
 939                 if (err) {
 940                         kfree(attrbuf);
 941                         return err;
 942                 }
 943
 944                 rtnl_lock();
 945                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
 946                                                    attrbuf);
 947                 kfree(attrbuf);
 948                 if (IS_ERR(*wdev)) {
 949                         rtnl_unlock();
 950                         return PTR_ERR(*wdev);
 951                 }
 952                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 953                 mutex_lock(&(*rdev)->wiphy.mtx);
 954                 rtnl_unlock();
 955                 /* 0 is the first index - add 1 to parse only once */
 956                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 957                 cb->args[1] = (*wdev)->identifier;
 958         } else {
 959                 /* subtract the 1 again here */
 960                 struct wiphy *wiphy;
 961                 struct wireless_dev *tmp;
 962
 963                 rtnl_lock();
 964                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 965                 if (!wiphy) {
 966                         rtnl_unlock();
 967                         return -ENODEV;
 968                 }
 969                 *rdev = wiphy_to_rdev(wiphy);
 970                 *wdev = NULL;
 971
 972                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 973                         if (tmp->identifier == cb->args[1]) {
 974                                 *wdev = tmp;
 975                                 break;
 976                         }
 977                 }
 978
 979                 if (!*wdev) {
 980                         rtnl_unlock();
 981                         return -ENODEV;
 982                 }
 983                 mutex_lock(&(*rdev)->wiphy.mtx);
 984                 rtnl_unlock();
 985         }
 986
 987         return 0;
 988 }
 989
 990 /* message building helper */
 991 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 992                      int flags, u8 cmd)
 993 {
 994         /* since there is no private header just add the generic one */
 995         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 996 }
 997
 998 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 999                                      const struct ieee80211_reg_rule *rule)
1000 {
1001         int j;
1002         struct nlattr *nl_wmm_rules =
1003                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1004
1005         if (!nl_wmm_rules)
1006                 goto nla_put_failure;
1007
1008         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1009                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1010
1011                 if (!nl_wmm_rule)
1012                         goto nla_put_failure;
1013
1014                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1015                                 rule->wmm_rule.client[j].cw_min) ||
1016                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1017                                 rule->wmm_rule.client[j].cw_max) ||
1018                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1019                                rule->wmm_rule.client[j].aifsn) ||
1020                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1021                                 rule->wmm_rule.client[j].cot))
1022                         goto nla_put_failure;
1023
1024                 nla_nest_end(msg, nl_wmm_rule);
1025         }
1026         nla_nest_end(msg, nl_wmm_rules);
1027
1028         return 0;
1029
1030 nla_put_failure:
1031         return -ENOBUFS;
1032 }
1033
1034 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1035                                    struct ieee80211_channel *chan,
1036                                    bool large)
1037 {
1038         /* Some channels must be completely excluded from the
1039          * list to protect old user-space tools from breaking
1040          */
1041         if (!large && chan->flags &
1042             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1043                 return 0;
1044         if (!large && chan->freq_offset)
1045                 return 0;
1046
1047         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1048                         chan->center_freq))
1049                 goto nla_put_failure;
1050
1051         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1052                 goto nla_put_failure;
1053
1054         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1055             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1056                 goto nla_put_failure;
1057         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1058                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1059                         goto nla_put_failure;
1060                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1061                         goto nla_put_failure;
1062         }
1063         if (chan->flags & IEEE80211_CHAN_RADAR) {
1064                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1065                         goto nla_put_failure;
1066                 if (large) {
1067                         u32 time;
1068
1069                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1070
1071                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1072                                         chan->dfs_state))
1073                                 goto nla_put_failure;
1074                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1075                                         time))
1076                                 goto nla_put_failure;
1077                         if (nla_put_u32(msg,
1078                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1079                                         chan->dfs_cac_ms))
1080                                 goto nla_put_failure;
1081                 }
1082         }
1083
1084         if (large) {
1085                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1086                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1087                         goto nla_put_failure;
1088                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1089                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1090                         goto nla_put_failure;
1091                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1092                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1093                         goto nla_put_failure;
1094                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1095                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1096                         goto nla_put_failure;
1097                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1098                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1099                         goto nla_put_failure;
1100                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1101                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1102                         goto nla_put_failure;
1103                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1104                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1105                         goto nla_put_failure;
1106                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1107                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1108                         goto nla_put_failure;
1109                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1110                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1111                         goto nla_put_failure;
1112                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1113                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1114                         goto nla_put_failure;
1115                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1116                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1117                         goto nla_put_failure;
1118                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1119                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1120                         goto nla_put_failure;
1121                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1122                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1123                         goto nla_put_failure;
1124                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1125                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1126                         goto nla_put_failure;
1127         }
1128
1129         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1130                         DBM_TO_MBM(chan->max_power)))
1131                 goto nla_put_failure;
1132
1133         if (large) {
1134                 const struct ieee80211_reg_rule *rule =
1135                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1136
1137                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1138                         if (nl80211_msg_put_wmm_rules(msg, rule))
1139                                 goto nla_put_failure;
1140                 }
1141         }
1142
1143         return 0;
1144
1145  nla_put_failure:
1146         return -ENOBUFS;
1147 }
1148
1149 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1150                                   struct cfg80211_txq_stats *txqstats,
1151                                   int attrtype)
1152 {
1153         struct nlattr *txqattr;
1154
1155 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1156         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1157             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1158                 return false;                                             \
1159         } while (0)
1160
1161         txqattr = nla_nest_start_noflag(msg, attrtype);
1162         if (!txqattr)
1163                 return false;
1164
1165         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1166         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1167         PUT_TXQVAL_U32(FLOWS, flows);
1168         PUT_TXQVAL_U32(DROPS, drops);
1169         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1170         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1171         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1172         PUT_TXQVAL_U32(COLLISIONS, collisions);
1173         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1174         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1175         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1176         nla_nest_end(msg, txqattr);
1177
1178 #undef PUT_TXQVAL_U32
1179         return true;
1180 }
1181
1182 /* netlink command implementations */
1183
1184 struct key_parse {
1185         struct key_params p;
1186         int idx;
1187         int type;
1188         bool def, defmgmt, defbeacon;
1189         bool def_uni, def_multi;
1190 };
1191
1192 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1193                                  struct key_parse *k)
1194 {
1195         struct nlattr *tb[NL80211_KEY_MAX + 1];
1196         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1197                                               nl80211_key_policy,
1198                                               info->extack);
1199         if (err)
1200                 return err;
1201
1202         k->def = !!tb[NL80211_KEY_DEFAULT];
1203         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1204         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1205
1206         if (k->def) {
1207                 k->def_uni = true;
1208                 k->def_multi = true;
1209         }
1210         if (k->defmgmt || k->defbeacon)
1211                 k->def_multi = true;
1212
1213         if (tb[NL80211_KEY_IDX])
1214                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1215
1216         if (tb[NL80211_KEY_DATA]) {
1217                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1218                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1219         }
1220
1221         if (tb[NL80211_KEY_SEQ]) {
1222                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1223                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1224         }
1225
1226         if (tb[NL80211_KEY_CIPHER])
1227                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1228
1229         if (tb[NL80211_KEY_TYPE])
1230                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1231
1232         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1233                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1234
1235                 err = nla_parse_nested_deprecated(kdt,
1236                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1237                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1238                                                   nl80211_key_default_policy,
1239                                                   info->extack);
1240                 if (err)
1241                         return err;
1242
1243                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1244                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1245         }
1246
1247         if (tb[NL80211_KEY_MODE])
1248                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1249
1250         return 0;
1251 }
1252
1253 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1254 {
1255         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1256                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1257                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1258         }
1259
1260         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1261                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1262                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1263         }
1264
1265         if (info->attrs[NL80211_ATTR_KEY_IDX])
1266                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1267
1268         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1269                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1270
1271         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1272         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1273
1274         if (k->def) {
1275                 k->def_uni = true;
1276                 k->def_multi = true;
1277         }
1278         if (k->defmgmt)
1279                 k->def_multi = true;
1280
1281         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1282                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1283
1284         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1285                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1286                 int err = nla_parse_nested_deprecated(kdt,
1287                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1288                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1289                                                       nl80211_key_default_policy,
1290                                                       info->extack);
1291                 if (err)
1292                         return err;
1293
1294                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1295                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1296         }
1297
1298         return 0;
1299 }
1300
1301 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1302 {
1303         int err;
1304
1305         memset(k, 0, sizeof(*k));
1306         k->idx = -1;
1307         k->type = -1;
1308
1309         if (info->attrs[NL80211_ATTR_KEY])
1310                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1311         else
1312                 err = nl80211_parse_key_old(info, k);
1313
1314         if (err)
1315                 return err;
1316
1317         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1318             (k->defbeacon ? 1 : 0) > 1) {
1319                 GENL_SET_ERR_MSG(info,
1320                                  "key with multiple default flags is invalid");
1321                 return -EINVAL;
1322         }
1323
1324         if (k->defmgmt || k->defbeacon) {
1325                 if (k->def_uni || !k->def_multi) {
1326                         GENL_SET_ERR_MSG(info,
1327                                          "defmgmt/defbeacon key must be mcast");
1328                         return -EINVAL;
1329                 }
1330         }
1331
1332         if (k->idx != -1) {
1333                 if (k->defmgmt) {
1334                         if (k->idx < 4 || k->idx > 5) {
1335                                 GENL_SET_ERR_MSG(info,
1336                                                  "defmgmt key idx not 4 or 5");
1337                                 return -EINVAL;
1338                         }
1339                 } else if (k->defbeacon) {
1340                         if (k->idx < 6 || k->idx > 7) {
1341                                 GENL_SET_ERR_MSG(info,
1342                                                  "defbeacon key idx not 6 or 7");
1343                                 return -EINVAL;
1344                         }
1345                 } else if (k->def) {
1346                         if (k->idx < 0 || k->idx > 3) {
1347                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1348                                 return -EINVAL;
1349                         }
1350                 } else {
1351                         if (k->idx < 0 || k->idx > 7) {
1352                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1353                                 return -EINVAL;
1354                         }
1355                 }
1356         }
1357
1358         return 0;
1359 }
1360
1361 static struct cfg80211_cached_keys *
1362 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1363                        struct genl_info *info, bool *no_ht)
1364 {
1365         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1366         struct key_parse parse;
1367         struct nlattr *key;
1368         struct cfg80211_cached_keys *result;
1369         int rem, err, def = 0;
1370         bool have_key = false;
1371
1372         nla_for_each_nested(key, keys, rem) {
1373                 have_key = true;
1374                 break;
1375         }
1376
1377         if (!have_key)
1378                 return NULL;
1379
1380         result = kzalloc(sizeof(*result), GFP_KERNEL);
1381         if (!result)
1382                 return ERR_PTR(-ENOMEM);
1383
1384         result->def = -1;
1385
1386         nla_for_each_nested(key, keys, rem) {
1387                 memset(&parse, 0, sizeof(parse));
1388                 parse.idx = -1;
1389
1390                 err = nl80211_parse_key_new(info, key, &parse);
1391                 if (err)
1392                         goto error;
1393                 err = -EINVAL;
1394                 if (!parse.p.key)
1395                         goto error;
1396                 if (parse.idx < 0 || parse.idx > 3) {
1397                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1398                         goto error;
1399                 }
1400                 if (parse.def) {
1401                         if (def) {
1402                                 GENL_SET_ERR_MSG(info,
1403                                                  "only one key can be default");
1404                                 goto error;
1405                         }
1406                         def = 1;
1407                         result->def = parse.idx;
1408                         if (!parse.def_uni || !parse.def_multi)
1409                                 goto error;
1410                 } else if (parse.defmgmt)
1411                         goto error;
1412                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1413                                                      parse.idx, false, NULL);
1414                 if (err)
1415                         goto error;
1416                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1417                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1418                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1419                         err = -EINVAL;
1420                         goto error;
1421                 }
1422                 result->params[parse.idx].cipher = parse.p.cipher;
1423                 result->params[parse.idx].key_len = parse.p.key_len;
1424                 result->params[parse.idx].key = result->data[parse.idx];
1425                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1426
1427                 /* must be WEP key if we got here */
1428                 if (no_ht)
1429                         *no_ht = true;
1430         }
1431
1432         if (result->def < 0) {
1433                 err = -EINVAL;
1434                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1435                 goto error;
1436         }
1437
1438         return result;
1439  error:
1440         kfree(result);
1441         return ERR_PTR(err);
1442 }
1443
1444 static int nl80211_key_allowed(struct wireless_dev *wdev)
1445 {
1446         ASSERT_WDEV_LOCK(wdev);
1447
1448         switch (wdev->iftype) {
1449         case NL80211_IFTYPE_AP:
1450         case NL80211_IFTYPE_AP_VLAN:
1451         case NL80211_IFTYPE_P2P_GO:
1452         case NL80211_IFTYPE_MESH_POINT:
1453                 break;
1454         case NL80211_IFTYPE_ADHOC:
1455         case NL80211_IFTYPE_STATION:
1456         case NL80211_IFTYPE_P2P_CLIENT:
1457                 if (!wdev->current_bss)
1458                         return -ENOLINK;
1459                 break;
1460         case NL80211_IFTYPE_UNSPECIFIED:
1461         case NL80211_IFTYPE_OCB:
1462         case NL80211_IFTYPE_MONITOR:
1463         case NL80211_IFTYPE_NAN:
1464         case NL80211_IFTYPE_P2P_DEVICE:
1465         case NL80211_IFTYPE_WDS:
1466         case NUM_NL80211_IFTYPES:
1467                 return -EINVAL;
1468         }
1469
1470         return 0;
1471 }
1472
1473 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1474                                                         u32 freq)
1475 {
1476         struct ieee80211_channel *chan;
1477
1478         chan = ieee80211_get_channel_khz(wiphy, freq);
1479         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1480                 return NULL;
1481         return chan;
1482 }
1483
1484 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1485 {
1486         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1487         int i;
1488
1489         if (!nl_modes)
1490                 goto nla_put_failure;
1491
1492         i = 0;
1493         while (ifmodes) {
1494                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1495                         goto nla_put_failure;
1496                 ifmodes >>= 1;
1497                 i++;
1498         }
1499
1500         nla_nest_end(msg, nl_modes);
1501         return 0;
1502
1503 nla_put_failure:
1504         return -ENOBUFS;
1505 }
1506
1507 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1508                                           struct sk_buff *msg,
1509                                           bool large)
1510 {
1511         struct nlattr *nl_combis;
1512         int i, j;
1513
1514         nl_combis = nla_nest_start_noflag(msg,
1515                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1516         if (!nl_combis)
1517                 goto nla_put_failure;
1518
1519         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1520                 const struct ieee80211_iface_combination *c;
1521                 struct nlattr *nl_combi, *nl_limits;
1522
1523                 c = &wiphy->iface_combinations[i];
1524
1525                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1526                 if (!nl_combi)
1527                         goto nla_put_failure;
1528
1529                 nl_limits = nla_nest_start_noflag(msg,
1530                                                   NL80211_IFACE_COMB_LIMITS);
1531                 if (!nl_limits)
1532                         goto nla_put_failure;
1533
1534                 for (j = 0; j < c->n_limits; j++) {
1535                         struct nlattr *nl_limit;
1536
1537                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1538                         if (!nl_limit)
1539                                 goto nla_put_failure;
1540                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1541                                         c->limits[j].max))
1542                                 goto nla_put_failure;
1543                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1544                                                 c->limits[j].types))
1545                                 goto nla_put_failure;
1546                         nla_nest_end(msg, nl_limit);
1547                 }
1548
1549                 nla_nest_end(msg, nl_limits);
1550
1551                 if (c->beacon_int_infra_match &&
1552                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1553                         goto nla_put_failure;
1554                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1555                                 c->num_different_channels) ||
1556                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1557                                 c->max_interfaces))
1558                         goto nla_put_failure;
1559                 if (large &&
1560                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1561                                 c->radar_detect_widths) ||
1562                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1563                                 c->radar_detect_regions)))
1564                         goto nla_put_failure;
1565                 if (c->beacon_int_min_gcd &&
1566                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1567                                 c->beacon_int_min_gcd))
1568                         goto nla_put_failure;
1569
1570                 nla_nest_end(msg, nl_combi);
1571         }
1572
1573         nla_nest_end(msg, nl_combis);
1574
1575         return 0;
1576 nla_put_failure:
1577         return -ENOBUFS;
1578 }
1579
1580 #ifdef CONFIG_PM
1581 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1582                                         struct sk_buff *msg)
1583 {
1584         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1585         struct nlattr *nl_tcp;
1586
1587         if (!tcp)
1588                 return 0;
1589
1590         nl_tcp = nla_nest_start_noflag(msg,
1591                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1592         if (!nl_tcp)
1593                 return -ENOBUFS;
1594
1595         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1596                         tcp->data_payload_max))
1597                 return -ENOBUFS;
1598
1599         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1600                         tcp->data_payload_max))
1601                 return -ENOBUFS;
1602
1603         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1604                 return -ENOBUFS;
1605
1606         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1607                                 sizeof(*tcp->tok), tcp->tok))
1608                 return -ENOBUFS;
1609
1610         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1611                         tcp->data_interval_max))
1612                 return -ENOBUFS;
1613
1614         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1615                         tcp->wake_payload_max))
1616                 return -ENOBUFS;
1617
1618         nla_nest_end(msg, nl_tcp);
1619         return 0;
1620 }
1621
1622 static int nl80211_send_wowlan(struct sk_buff *msg,
1623                                struct cfg80211_registered_device *rdev,
1624                                bool large)
1625 {
1626         struct nlattr *nl_wowlan;
1627
1628         if (!rdev->wiphy.wowlan)
1629                 return 0;
1630
1631         nl_wowlan = nla_nest_start_noflag(msg,
1632                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1633         if (!nl_wowlan)
1634                 return -ENOBUFS;
1635
1636         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1637              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1638             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1639              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1640             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1641              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1642             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1643              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1644             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1645              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1646             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1647              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1648             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1649              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1650             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1651              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1652                 return -ENOBUFS;
1653
1654         if (rdev->wiphy.wowlan->n_patterns) {
1655                 struct nl80211_pattern_support pat = {
1656                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1657                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1658                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1659                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1660                 };
1661
1662                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1663                             sizeof(pat), &pat))
1664                         return -ENOBUFS;
1665         }
1666
1667         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1668             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1669                         rdev->wiphy.wowlan->max_nd_match_sets))
1670                 return -ENOBUFS;
1671
1672         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1673                 return -ENOBUFS;
1674
1675         nla_nest_end(msg, nl_wowlan);
1676
1677         return 0;
1678 }
1679 #endif
1680
1681 static int nl80211_send_coalesce(struct sk_buff *msg,
1682                                  struct cfg80211_registered_device *rdev)
1683 {
1684         struct nl80211_coalesce_rule_support rule;
1685
1686         if (!rdev->wiphy.coalesce)
1687                 return 0;
1688
1689         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1690         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1691         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1692         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1693         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1694         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1695
1696         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1697                 return -ENOBUFS;
1698
1699         return 0;
1700 }
1701
1702 static int
1703 nl80211_send_iftype_data(struct sk_buff *msg,
1704                          const struct ieee80211_supported_band *sband,
1705                          const struct ieee80211_sband_iftype_data *iftdata)
1706 {
1707         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1708
1709         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1710                                 iftdata->types_mask))
1711                 return -ENOBUFS;
1712
1713         if (he_cap->has_he) {
1714                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1715                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1716                             he_cap->he_cap_elem.mac_cap_info) ||
1717                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1718                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1719                             he_cap->he_cap_elem.phy_cap_info) ||
1720                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1721                             sizeof(he_cap->he_mcs_nss_supp),
1722                             &he_cap->he_mcs_nss_supp) ||
1723                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1724                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1725                         return -ENOBUFS;
1726         }
1727
1728         if (sband->band == NL80211_BAND_6GHZ &&
1729             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1730                     sizeof(iftdata->he_6ghz_capa),
1731                     &iftdata->he_6ghz_capa))
1732                 return -ENOBUFS;
1733
1734         return 0;
1735 }
1736
1737 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1738                                       struct ieee80211_supported_band *sband,
1739                                       bool large)
1740 {
1741         struct nlattr *nl_rates, *nl_rate;
1742         struct ieee80211_rate *rate;
1743         int i;
1744
1745         /* add HT info */
1746         if (sband->ht_cap.ht_supported &&
1747             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1748                      sizeof(sband->ht_cap.mcs),
1749                      &sband->ht_cap.mcs) ||
1750              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1751                          sband->ht_cap.cap) ||
1752              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1753                         sband->ht_cap.ampdu_factor) ||
1754              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1755                         sband->ht_cap.ampdu_density)))
1756                 return -ENOBUFS;
1757
1758         /* add VHT info */
1759         if (sband->vht_cap.vht_supported &&
1760             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1761                      sizeof(sband->vht_cap.vht_mcs),
1762                      &sband->vht_cap.vht_mcs) ||
1763              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1764                          sband->vht_cap.cap)))
1765                 return -ENOBUFS;
1766
1767         if (large && sband->n_iftype_data) {
1768                 struct nlattr *nl_iftype_data =
1769                         nla_nest_start_noflag(msg,
1770                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1771                 int err;
1772
1773                 if (!nl_iftype_data)
1774                         return -ENOBUFS;
1775
1776                 for (i = 0; i < sband->n_iftype_data; i++) {
1777                         struct nlattr *iftdata;
1778
1779                         iftdata = nla_nest_start_noflag(msg, i + 1);
1780                         if (!iftdata)
1781                                 return -ENOBUFS;
1782
1783                         err = nl80211_send_iftype_data(msg, sband,
1784                                                        &sband->iftype_data[i]);
1785                         if (err)
1786                                 return err;
1787
1788                         nla_nest_end(msg, iftdata);
1789                 }
1790
1791                 nla_nest_end(msg, nl_iftype_data);
1792         }
1793
1794         /* add EDMG info */
1795         if (large && sband->edmg_cap.channels &&
1796             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1797                        sband->edmg_cap.channels) ||
1798             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1799                        sband->edmg_cap.bw_config)))
1800
1801                 return -ENOBUFS;
1802
1803         /* add bitrates */
1804         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1805         if (!nl_rates)
1806                 return -ENOBUFS;
1807
1808         for (i = 0; i < sband->n_bitrates; i++) {
1809                 nl_rate = nla_nest_start_noflag(msg, i);
1810                 if (!nl_rate)
1811                         return -ENOBUFS;
1812
1813                 rate = &sband->bitrates[i];
1814                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1815                                 rate->bitrate))
1816                         return -ENOBUFS;
1817                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1818                     nla_put_flag(msg,
1819                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1820                         return -ENOBUFS;
1821
1822                 nla_nest_end(msg, nl_rate);
1823         }
1824
1825         nla_nest_end(msg, nl_rates);
1826
1827         return 0;
1828 }
1829
1830 static int
1831 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1832                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1833 {
1834         u16 stypes;
1835         struct nlattr *nl_ftypes, *nl_ifs;
1836         enum nl80211_iftype ift;
1837         int i;
1838
1839         if (!mgmt_stypes)
1840                 return 0;
1841
1842         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1843         if (!nl_ifs)
1844                 return -ENOBUFS;
1845
1846         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1847                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1848                 if (!nl_ftypes)
1849                         return -ENOBUFS;
1850                 i = 0;
1851                 stypes = mgmt_stypes[ift].tx;
1852                 while (stypes) {
1853                         if ((stypes & 1) &&
1854                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1855                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1856                                 return -ENOBUFS;
1857                         stypes >>= 1;
1858                         i++;
1859                 }
1860                 nla_nest_end(msg, nl_ftypes);
1861         }
1862
1863         nla_nest_end(msg, nl_ifs);
1864
1865         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1866         if (!nl_ifs)
1867                 return -ENOBUFS;
1868
1869         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1870                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1871                 if (!nl_ftypes)
1872                         return -ENOBUFS;
1873                 i = 0;
1874                 stypes = mgmt_stypes[ift].rx;
1875                 while (stypes) {
1876                         if ((stypes & 1) &&
1877                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1878                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1879                                 return -ENOBUFS;
1880                         stypes >>= 1;
1881                         i++;
1882                 }
1883                 nla_nest_end(msg, nl_ftypes);
1884         }
1885         nla_nest_end(msg, nl_ifs);
1886
1887         return 0;
1888 }
1889
1890 #define CMD(op, n)                                                      \
1891          do {                                                           \
1892                 if (rdev->ops->op) {                                    \
1893                         i++;                                            \
1894                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1895                                 goto nla_put_failure;                   \
1896                 }                                                       \
1897         } while (0)
1898
1899 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1900                                         struct sk_buff *msg)
1901 {
1902         int i = 0;
1903
1904         /*
1905          * do *NOT* add anything into this function, new things need to be
1906          * advertised only to new versions of userspace that can deal with
1907          * the split (and they can't possibly care about new features...
1908          */
1909         CMD(add_virtual_intf, NEW_INTERFACE);
1910         CMD(change_virtual_intf, SET_INTERFACE);
1911         CMD(add_key, NEW_KEY);
1912         CMD(start_ap, START_AP);
1913         CMD(add_station, NEW_STATION);
1914         CMD(add_mpath, NEW_MPATH);
1915         CMD(update_mesh_config, SET_MESH_CONFIG);
1916         CMD(change_bss, SET_BSS);
1917         CMD(auth, AUTHENTICATE);
1918         CMD(assoc, ASSOCIATE);
1919         CMD(deauth, DEAUTHENTICATE);
1920         CMD(disassoc, DISASSOCIATE);
1921         CMD(join_ibss, JOIN_IBSS);
1922         CMD(join_mesh, JOIN_MESH);
1923         CMD(set_pmksa, SET_PMKSA);
1924         CMD(del_pmksa, DEL_PMKSA);
1925         CMD(flush_pmksa, FLUSH_PMKSA);
1926         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1927                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1928         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1929         CMD(mgmt_tx, FRAME);
1930         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1931         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1932                 i++;
1933                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1934                         goto nla_put_failure;
1935         }
1936         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1937             rdev->ops->join_mesh) {
1938                 i++;
1939                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1940                         goto nla_put_failure;
1941         }
1942         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1943                 CMD(tdls_mgmt, TDLS_MGMT);
1944                 CMD(tdls_oper, TDLS_OPER);
1945         }
1946         if (rdev->wiphy.max_sched_scan_reqs)
1947                 CMD(sched_scan_start, START_SCHED_SCAN);
1948         CMD(probe_client, PROBE_CLIENT);
1949         CMD(set_noack_map, SET_NOACK_MAP);
1950         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1951                 i++;
1952                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1953                         goto nla_put_failure;
1954         }
1955         CMD(start_p2p_device, START_P2P_DEVICE);
1956         CMD(set_mcast_rate, SET_MCAST_RATE);
1957 #ifdef CONFIG_NL80211_TESTMODE
1958         CMD(testmode_cmd, TESTMODE);
1959 #endif
1960
1961         if (rdev->ops->connect || rdev->ops->auth) {
1962                 i++;
1963                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1964                         goto nla_put_failure;
1965         }
1966
1967         if (rdev->ops->disconnect || rdev->ops->deauth) {
1968                 i++;
1969                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1970                         goto nla_put_failure;
1971         }
1972
1973         return i;
1974  nla_put_failure:
1975         return -ENOBUFS;
1976 }
1977
1978 static int
1979 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1980                            struct sk_buff *msg)
1981 {
1982         struct nlattr *ftm;
1983
1984         if (!cap->ftm.supported)
1985                 return 0;
1986
1987         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1988         if (!ftm)
1989                 return -ENOBUFS;
1990
1991         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1992                 return -ENOBUFS;
1993         if (cap->ftm.non_asap &&
1994             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1995                 return -ENOBUFS;
1996         if (cap->ftm.request_lci &&
1997             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1998                 return -ENOBUFS;
1999         if (cap->ftm.request_civicloc &&
2000             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2001                 return -ENOBUFS;
2002         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2003                         cap->ftm.preambles))
2004                 return -ENOBUFS;
2005         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2006                         cap->ftm.bandwidths))
2007                 return -ENOBUFS;
2008         if (cap->ftm.max_bursts_exponent >= 0 &&
2009             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2010                         cap->ftm.max_bursts_exponent))
2011                 return -ENOBUFS;
2012         if (cap->ftm.max_ftms_per_burst &&
2013             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2014                         cap->ftm.max_ftms_per_burst))
2015                 return -ENOBUFS;
2016         if (cap->ftm.trigger_based &&
2017             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2018                 return -ENOBUFS;
2019         if (cap->ftm.non_trigger_based &&
2020             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2021                 return -ENOBUFS;
2022
2023         nla_nest_end(msg, ftm);
2024         return 0;
2025 }
2026
2027 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2028                                   struct sk_buff *msg)
2029 {
2030         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2031         struct nlattr *pmsr, *caps;
2032
2033         if (!cap)
2034                 return 0;
2035
2036         /*
2037          * we don't need to clean up anything here since the caller
2038          * will genlmsg_cancel() if we fail
2039          */
2040
2041         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2042         if (!pmsr)
2043                 return -ENOBUFS;
2044
2045         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2046                 return -ENOBUFS;
2047
2048         if (cap->report_ap_tsf &&
2049             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2050                 return -ENOBUFS;
2051
2052         if (cap->randomize_mac_addr &&
2053             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2054                 return -ENOBUFS;
2055
2056         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2057         if (!caps)
2058                 return -ENOBUFS;
2059
2060         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2061                 return -ENOBUFS;
2062
2063         nla_nest_end(msg, caps);
2064         nla_nest_end(msg, pmsr);
2065
2066         return 0;
2067 }
2068
2069 static int
2070 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2071                               struct sk_buff *msg)
2072 {
2073         int i;
2074         struct nlattr *nested, *nested_akms;
2075         const struct wiphy_iftype_akm_suites *iftype_akms;
2076
2077         if (!rdev->wiphy.num_iftype_akm_suites ||
2078             !rdev->wiphy.iftype_akm_suites)
2079                 return 0;
2080
2081         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2082         if (!nested)
2083                 return -ENOBUFS;
2084
2085         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2086                 nested_akms = nla_nest_start(msg, i + 1);
2087                 if (!nested_akms)
2088                         return -ENOBUFS;
2089
2090                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2091
2092                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2093                                         iftype_akms->iftypes_mask))
2094                         return -ENOBUFS;
2095
2096                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2097                             sizeof(u32) * iftype_akms->n_akm_suites,
2098                             iftype_akms->akm_suites)) {
2099                         return -ENOBUFS;
2100                 }
2101                 nla_nest_end(msg, nested_akms);
2102         }
2103
2104         nla_nest_end(msg, nested);
2105
2106         return 0;
2107 }
2108
2109 static int
2110 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2111                                struct sk_buff *msg)
2112 {
2113         struct nlattr *supp;
2114
2115         if (!rdev->wiphy.tid_config_support.vif &&
2116             !rdev->wiphy.tid_config_support.peer)
2117                 return 0;
2118
2119         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2120         if (!supp)
2121                 return -ENOSPC;
2122
2123         if (rdev->wiphy.tid_config_support.vif &&
2124             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2125                               rdev->wiphy.tid_config_support.vif,
2126                               NL80211_TID_CONFIG_ATTR_PAD))
2127                 goto fail;
2128
2129         if (rdev->wiphy.tid_config_support.peer &&
2130             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2131                               rdev->wiphy.tid_config_support.peer,
2132                               NL80211_TID_CONFIG_ATTR_PAD))
2133                 goto fail;
2134
2135         /* for now we just use the same value ... makes more sense */
2136         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2137                        rdev->wiphy.tid_config_support.max_retry))
2138                 goto fail;
2139         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2140                        rdev->wiphy.tid_config_support.max_retry))
2141                 goto fail;
2142
2143         nla_nest_end(msg, supp);
2144
2145         return 0;
2146 fail:
2147         nla_nest_cancel(msg, supp);
2148         return -ENOBUFS;
2149 }
2150
2151 static int
2152 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2153                       struct sk_buff *msg)
2154 {
2155         struct nlattr *sar_capa, *specs, *sub_freq_range;
2156         u8 num_freq_ranges;
2157         int i;
2158
2159         if (!rdev->wiphy.sar_capa)
2160                 return 0;
2161
2162         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2163
2164         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2165         if (!sar_capa)
2166                 return -ENOSPC;
2167
2168         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2169                 goto fail;
2170
2171         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2172         if (!specs)
2173                 goto fail;
2174
2175         /* report supported freq_ranges */
2176         for (i = 0; i < num_freq_ranges; i++) {
2177                 sub_freq_range = nla_nest_start(msg, i + 1);
2178                 if (!sub_freq_range)
2179                         goto fail;
2180
2181                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2182                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2183                         goto fail;
2184
2185                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2186                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2187                         goto fail;
2188
2189                 nla_nest_end(msg, sub_freq_range);
2190         }
2191
2192         nla_nest_end(msg, specs);
2193         nla_nest_end(msg, sar_capa);
2194
2195         return 0;
2196 fail:
2197         nla_nest_cancel(msg, sar_capa);
2198         return -ENOBUFS;
2199 }
2200
2201 struct nl80211_dump_wiphy_state {
2202         s64 filter_wiphy;
2203         long start;
2204         long split_start, band_start, chan_start, capa_start;
2205         bool split;
2206 };
2207
2208 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2209                               enum nl80211_commands cmd,
2210                               struct sk_buff *msg, u32 portid, u32 seq,
2211                               int flags, struct nl80211_dump_wiphy_state *state)
2212 {
2213         void *hdr;
2214         struct nlattr *nl_bands, *nl_band;
2215         struct nlattr *nl_freqs, *nl_freq;
2216         struct nlattr *nl_cmds;
2217         enum nl80211_band band;
2218         struct ieee80211_channel *chan;
2219         int i;
2220         const struct ieee80211_txrx_stypes *mgmt_stypes =
2221                                 rdev->wiphy.mgmt_stypes;
2222         u32 features;
2223
2224         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2225         if (!hdr)
2226                 return -ENOBUFS;
2227
2228         if (WARN_ON(!state))
2229                 return -EINVAL;
2230
2231         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2232             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2233                            wiphy_name(&rdev->wiphy)) ||
2234             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2235                         cfg80211_rdev_list_generation))
2236                 goto nla_put_failure;
2237
2238         if (cmd != NL80211_CMD_NEW_WIPHY)
2239                 goto finish;
2240
2241         switch (state->split_start) {
2242         case 0:
2243                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2244                                rdev->wiphy.retry_short) ||
2245                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2246                                rdev->wiphy.retry_long) ||
2247                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2248                                 rdev->wiphy.frag_threshold) ||
2249                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2250                                 rdev->wiphy.rts_threshold) ||
2251                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2252                                rdev->wiphy.coverage_class) ||
2253                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2254                                rdev->wiphy.max_scan_ssids) ||
2255                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2256                                rdev->wiphy.max_sched_scan_ssids) ||
2257                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2258                                 rdev->wiphy.max_scan_ie_len) ||
2259                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2260                                 rdev->wiphy.max_sched_scan_ie_len) ||
2261                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2262                                rdev->wiphy.max_match_sets))
2263                         goto nla_put_failure;
2264
2265                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2266                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2267                         goto nla_put_failure;
2268                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2269                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2270                         goto nla_put_failure;
2271                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2272                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2273                         goto nla_put_failure;
2274                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2275                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2276                         goto nla_put_failure;
2277                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2278                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2279                         goto nla_put_failure;
2280                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2281                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2282                         goto nla_put_failure;
2283                 state->split_start++;
2284                 if (state->split)
2285                         break;
2286                 fallthrough;
2287         case 1:
2288                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2289                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2290                             rdev->wiphy.cipher_suites))
2291                         goto nla_put_failure;
2292
2293                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2294                                rdev->wiphy.max_num_pmkids))
2295                         goto nla_put_failure;
2296
2297                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2298                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2299                         goto nla_put_failure;
2300
2301                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2302                                 rdev->wiphy.available_antennas_tx) ||
2303                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2304                                 rdev->wiphy.available_antennas_rx))
2305                         goto nla_put_failure;
2306
2307                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2308                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2309                                 rdev->wiphy.probe_resp_offload))
2310                         goto nla_put_failure;
2311
2312                 if ((rdev->wiphy.available_antennas_tx ||
2313                      rdev->wiphy.available_antennas_rx) &&
2314                     rdev->ops->get_antenna) {
2315                         u32 tx_ant = 0, rx_ant = 0;
2316                         int res;
2317
2318                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2319                         if (!res) {
2320                                 if (nla_put_u32(msg,
2321                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2322                                                 tx_ant) ||
2323                                     nla_put_u32(msg,
2324                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2325                                                 rx_ant))
2326                                         goto nla_put_failure;
2327                         }
2328                 }
2329
2330                 state->split_start++;
2331                 if (state->split)
2332                         break;
2333                 fallthrough;
2334         case 2:
2335                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2336                                         rdev->wiphy.interface_modes))
2337                                 goto nla_put_failure;
2338                 state->split_start++;
2339                 if (state->split)
2340                         break;
2341                 fallthrough;
2342         case 3:
2343                 nl_bands = nla_nest_start_noflag(msg,
2344                                                  NL80211_ATTR_WIPHY_BANDS);
2345                 if (!nl_bands)
2346                         goto nla_put_failure;
2347
2348                 for (band = state->band_start;
2349                      band < NUM_NL80211_BANDS; band++) {
2350                         struct ieee80211_supported_band *sband;
2351
2352                         /* omit higher bands for ancient software */
2353                         if (band > NL80211_BAND_5GHZ && !state->split)
2354                                 break;
2355
2356                         sband = rdev->wiphy.bands[band];
2357
2358                         if (!sband)
2359                                 continue;
2360
2361                         nl_band = nla_nest_start_noflag(msg, band);
2362                         if (!nl_band)
2363                                 goto nla_put_failure;
2364
2365                         switch (state->chan_start) {
2366                         case 0:
2367                                 if (nl80211_send_band_rateinfo(msg, sband,
2368                                                                state->split))
2369                                         goto nla_put_failure;
2370                                 state->chan_start++;
2371                                 if (state->split)
2372                                         break;
2373                                 fallthrough;
2374                         default:
2375                                 /* add frequencies */
2376                                 nl_freqs = nla_nest_start_noflag(msg,
2377                                                                  NL80211_BAND_ATTR_FREQS);
2378                                 if (!nl_freqs)
2379                                         goto nla_put_failure;
2380
2381                                 for (i = state->chan_start - 1;
2382                                      i < sband->n_channels;
2383                                      i++) {
2384                                         nl_freq = nla_nest_start_noflag(msg,
2385                                                                         i);
2386                                         if (!nl_freq)
2387                                                 goto nla_put_failure;
2388
2389                                         chan = &sband->channels[i];
2390
2391                                         if (nl80211_msg_put_channel(
2392                                                         msg, &rdev->wiphy, chan,
2393                                                         state->split))
2394                                                 goto nla_put_failure;
2395
2396                                         nla_nest_end(msg, nl_freq);
2397                                         if (state->split)
2398                                                 break;
2399                                 }
2400                                 if (i < sband->n_channels)
2401                                         state->chan_start = i + 2;
2402                                 else
2403                                         state->chan_start = 0;
2404                                 nla_nest_end(msg, nl_freqs);
2405                         }
2406
2407                         nla_nest_end(msg, nl_band);
2408
2409                         if (state->split) {
2410                                 /* start again here */
2411                                 if (state->chan_start)
2412                                         band--;
2413                                 break;
2414                         }
2415                 }
2416                 nla_nest_end(msg, nl_bands);
2417
2418                 if (band < NUM_NL80211_BANDS)
2419                         state->band_start = band + 1;
2420                 else
2421                         state->band_start = 0;
2422
2423                 /* if bands & channels are done, continue outside */
2424                 if (state->band_start == 0 && state->chan_start == 0)
2425                         state->split_start++;
2426                 if (state->split)
2427                         break;
2428                 fallthrough;
2429         case 4:
2430                 nl_cmds = nla_nest_start_noflag(msg,
2431                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2432                 if (!nl_cmds)
2433                         goto nla_put_failure;
2434
2435                 i = nl80211_add_commands_unsplit(rdev, msg);
2436                 if (i < 0)
2437                         goto nla_put_failure;
2438                 if (state->split) {
2439                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2440                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2441                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2442                                 CMD(channel_switch, CHANNEL_SWITCH);
2443                         CMD(set_qos_map, SET_QOS_MAP);
2444                         if (rdev->wiphy.features &
2445                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2446                                 CMD(add_tx_ts, ADD_TX_TS);
2447                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2448                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2449                         CMD(update_ft_ies, UPDATE_FT_IES);
2450                         if (rdev->wiphy.sar_capa)
2451                                 CMD(set_sar_specs, SET_SAR_SPECS);
2452                 }
2453 #undef CMD
2454
2455                 nla_nest_end(msg, nl_cmds);
2456                 state->split_start++;
2457                 if (state->split)
2458                         break;
2459                 fallthrough;
2460         case 5:
2461                 if (rdev->ops->remain_on_channel &&
2462                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2463                     nla_put_u32(msg,
2464                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2465                                 rdev->wiphy.max_remain_on_channel_duration))
2466                         goto nla_put_failure;
2467
2468                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2469                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2470                         goto nla_put_failure;
2471
2472                 state->split_start++;
2473                 if (state->split)
2474                         break;
2475                 fallthrough;
2476         case 6:
2477 #ifdef CONFIG_PM
2478                 if (nl80211_send_wowlan(msg, rdev, state->split))
2479                         goto nla_put_failure;
2480                 state->split_start++;
2481                 if (state->split)
2482                         break;
2483 #else
2484                 state->split_start++;
2485 #endif
2486                 fallthrough;
2487         case 7:
2488                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2489                                         rdev->wiphy.software_iftypes))
2490                         goto nla_put_failure;
2491
2492                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2493                                                    state->split))
2494                         goto nla_put_failure;
2495
2496                 state->split_start++;
2497                 if (state->split)
2498                         break;
2499                 fallthrough;
2500         case 8:
2501                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2502                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2503                                 rdev->wiphy.ap_sme_capa))
2504                         goto nla_put_failure;
2505
2506                 features = rdev->wiphy.features;
2507                 /*
2508                  * We can only add the per-channel limit information if the
2509                  * dump is split, otherwise it makes it too big. Therefore
2510                  * only advertise it in that case.
2511                  */
2512                 if (state->split)
2513                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2514                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2515                         goto nla_put_failure;
2516
2517                 if (rdev->wiphy.ht_capa_mod_mask &&
2518                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2519                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2520                             rdev->wiphy.ht_capa_mod_mask))
2521                         goto nla_put_failure;
2522
2523                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2524                     rdev->wiphy.max_acl_mac_addrs &&
2525                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2526                                 rdev->wiphy.max_acl_mac_addrs))
2527                         goto nla_put_failure;
2528
2529                 /*
2530                  * Any information below this point is only available to
2531                  * applications that can deal with it being split. This
2532                  * helps ensure that newly added capabilities don't break
2533                  * older tools by overrunning their buffers.
2534                  *
2535                  * We still increment split_start so that in the split
2536                  * case we'll continue with more data in the next round,
2537                  * but break unconditionally so unsplit data stops here.
2538                  */
2539                 if (state->split)
2540                         state->split_start++;
2541                 else
2542                         state->split_start = 0;
2543                 break;
2544         case 9:
2545                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2546                         goto nla_put_failure;
2547
2548                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2549                                 rdev->wiphy.max_sched_scan_plans) ||
2550                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2551                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2552                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2553                                 rdev->wiphy.max_sched_scan_plan_iterations))
2554                         goto nla_put_failure;
2555
2556                 if (rdev->wiphy.extended_capabilities &&
2557                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2558                              rdev->wiphy.extended_capabilities_len,
2559                              rdev->wiphy.extended_capabilities) ||
2560                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2561                              rdev->wiphy.extended_capabilities_len,
2562                              rdev->wiphy.extended_capabilities_mask)))
2563                         goto nla_put_failure;
2564
2565                 if (rdev->wiphy.vht_capa_mod_mask &&
2566                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2567                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2568                             rdev->wiphy.vht_capa_mod_mask))
2569                         goto nla_put_failure;
2570
2571                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2572                             rdev->wiphy.perm_addr))
2573                         goto nla_put_failure;
2574
2575                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2576                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2577                             rdev->wiphy.addr_mask))
2578                         goto nla_put_failure;
2579
2580                 if (rdev->wiphy.n_addresses > 1) {
2581                         void *attr;
2582
2583                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2584                         if (!attr)
2585                                 goto nla_put_failure;
2586
2587                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2588                                 if (nla_put(msg, i + 1, ETH_ALEN,
2589                                             rdev->wiphy.addresses[i].addr))
2590                                         goto nla_put_failure;
2591
2592                         nla_nest_end(msg, attr);
2593                 }
2594
2595                 state->split_start++;
2596                 break;
2597         case 10:
2598                 if (nl80211_send_coalesce(msg, rdev))
2599                         goto nla_put_failure;
2600
2601                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2602                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2603                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2604                         goto nla_put_failure;
2605
2606                 if (rdev->wiphy.max_ap_assoc_sta &&
2607                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2608                                 rdev->wiphy.max_ap_assoc_sta))
2609                         goto nla_put_failure;
2610
2611                 state->split_start++;
2612                 break;
2613         case 11:
2614                 if (rdev->wiphy.n_vendor_commands) {
2615                         const struct nl80211_vendor_cmd_info *info;
2616                         struct nlattr *nested;
2617
2618                         nested = nla_nest_start_noflag(msg,
2619                                                        NL80211_ATTR_VENDOR_DATA);
2620                         if (!nested)
2621                                 goto nla_put_failure;
2622
2623                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2624                                 info = &rdev->wiphy.vendor_commands[i].info;
2625                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2626                                         goto nla_put_failure;
2627                         }
2628                         nla_nest_end(msg, nested);
2629                 }
2630
2631                 if (rdev->wiphy.n_vendor_events) {
2632                         const struct nl80211_vendor_cmd_info *info;
2633                         struct nlattr *nested;
2634
2635                         nested = nla_nest_start_noflag(msg,
2636                                                        NL80211_ATTR_VENDOR_EVENTS);
2637                         if (!nested)
2638                                 goto nla_put_failure;
2639
2640                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2641                                 info = &rdev->wiphy.vendor_events[i];
2642                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2643                                         goto nla_put_failure;
2644                         }
2645                         nla_nest_end(msg, nested);
2646                 }
2647                 state->split_start++;
2648                 break;
2649         case 12:
2650                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2651                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2652                                rdev->wiphy.max_num_csa_counters))
2653                         goto nla_put_failure;
2654
2655                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2656                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2657                         goto nla_put_failure;
2658
2659                 if (rdev->wiphy.max_sched_scan_reqs &&
2660                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2661                                 rdev->wiphy.max_sched_scan_reqs))
2662                         goto nla_put_failure;
2663
2664                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2665                             sizeof(rdev->wiphy.ext_features),
2666                             rdev->wiphy.ext_features))
2667                         goto nla_put_failure;
2668
2669                 if (rdev->wiphy.bss_select_support) {
2670                         struct nlattr *nested;
2671                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2672
2673                         nested = nla_nest_start_noflag(msg,
2674                                                        NL80211_ATTR_BSS_SELECT);
2675                         if (!nested)
2676                                 goto nla_put_failure;
2677
2678                         i = 0;
2679                         while (bss_select_support) {
2680                                 if ((bss_select_support & 1) &&
2681                                     nla_put_flag(msg, i))
2682                                         goto nla_put_failure;
2683                                 i++;
2684                                 bss_select_support >>= 1;
2685                         }
2686                         nla_nest_end(msg, nested);
2687                 }
2688
2689                 state->split_start++;
2690                 break;
2691         case 13:
2692                 if (rdev->wiphy.num_iftype_ext_capab &&
2693                     rdev->wiphy.iftype_ext_capab) {
2694                         struct nlattr *nested_ext_capab, *nested;
2695
2696                         nested = nla_nest_start_noflag(msg,
2697                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2698                         if (!nested)
2699                                 goto nla_put_failure;
2700
2701                         for (i = state->capa_start;
2702                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2703                                 const struct wiphy_iftype_ext_capab *capab;
2704
2705                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2706
2707                                 nested_ext_capab = nla_nest_start_noflag(msg,
2708                                                                          i);
2709                                 if (!nested_ext_capab ||
2710                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2711                                                 capab->iftype) ||
2712                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2713                                             capab->extended_capabilities_len,
2714                                             capab->extended_capabilities) ||
2715                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2716                                             capab->extended_capabilities_len,
2717                                             capab->extended_capabilities_mask))
2718                                         goto nla_put_failure;
2719
2720                                 nla_nest_end(msg, nested_ext_capab);
2721                                 if (state->split)
2722                                         break;
2723                         }
2724                         nla_nest_end(msg, nested);
2725                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2726                                 state->capa_start = i + 1;
2727                                 break;
2728                         }
2729                 }
2730
2731                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2732                                 rdev->wiphy.nan_supported_bands))
2733                         goto nla_put_failure;
2734
2735                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2736                                             NL80211_EXT_FEATURE_TXQS)) {
2737                         struct cfg80211_txq_stats txqstats = {};
2738                         int res;
2739
2740                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2741                         if (!res &&
2742                             !nl80211_put_txq_stats(msg, &txqstats,
2743                                                    NL80211_ATTR_TXQ_STATS))
2744                                 goto nla_put_failure;
2745
2746                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2747                                         rdev->wiphy.txq_limit))
2748                                 goto nla_put_failure;
2749                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2750                                         rdev->wiphy.txq_memory_limit))
2751                                 goto nla_put_failure;
2752                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2753                                         rdev->wiphy.txq_quantum))
2754                                 goto nla_put_failure;
2755                 }
2756
2757                 state->split_start++;
2758                 break;
2759         case 14:
2760                 if (nl80211_send_pmsr_capa(rdev, msg))
2761                         goto nla_put_failure;
2762
2763                 state->split_start++;
2764                 break;
2765         case 15:
2766                 if (rdev->wiphy.akm_suites &&
2767                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2768                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2769                             rdev->wiphy.akm_suites))
2770                         goto nla_put_failure;
2771
2772                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2773                         goto nla_put_failure;
2774
2775                 if (nl80211_put_tid_config_support(rdev, msg))
2776                         goto nla_put_failure;
2777                 state->split_start++;
2778                 break;
2779         case 16:
2780                 if (nl80211_put_sar_specs(rdev, msg))
2781                         goto nla_put_failure;
2782
2783                 /* done */
2784                 state->split_start = 0;
2785                 break;
2786         }
2787  finish:
2788         genlmsg_end(msg, hdr);
2789         return 0;
2790
2791  nla_put_failure:
2792         genlmsg_cancel(msg, hdr);
2793         return -EMSGSIZE;
2794 }
2795
2796 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2797                                     struct netlink_callback *cb,
2798                                     struct nl80211_dump_wiphy_state *state)
2799 {
2800         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2801         int ret;
2802
2803         if (!tb)
2804                 return -ENOMEM;
2805
2806         ret = nlmsg_parse_deprecated(cb->nlh,
2807                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2808                                      tb, nl80211_fam.maxattr,
2809                                      nl80211_policy, NULL);
2810         /* ignore parse errors for backward compatibility */
2811         if (ret) {
2812                 ret = 0;
2813                 goto out;
2814         }
2815
2816         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2817         if (tb[NL80211_ATTR_WIPHY])
2818                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2819         if (tb[NL80211_ATTR_WDEV])
2820                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2821         if (tb[NL80211_ATTR_IFINDEX]) {
2822                 struct net_device *netdev;
2823                 struct cfg80211_registered_device *rdev;
2824                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2825
2826                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2827                 if (!netdev) {
2828                         ret = -ENODEV;
2829                         goto out;
2830                 }
2831                 if (netdev->ieee80211_ptr) {
2832                         rdev = wiphy_to_rdev(
2833                                 netdev->ieee80211_ptr->wiphy);
2834                         state->filter_wiphy = rdev->wiphy_idx;
2835                 }
2836         }
2837
2838         ret = 0;
2839 out:
2840         kfree(tb);
2841         return ret;
2842 }
2843
2844 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2845 {
2846         int idx = 0, ret;
2847         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2848         struct cfg80211_registered_device *rdev;
2849
2850         rtnl_lock();
2851         if (!state) {
2852                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2853                 if (!state) {
2854                         rtnl_unlock();
2855                         return -ENOMEM;
2856                 }
2857                 state->filter_wiphy = -1;
2858                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2859                 if (ret) {
2860                         kfree(state);
2861                         rtnl_unlock();
2862                         return ret;
2863                 }
2864                 cb->args[0] = (long)state;
2865         }
2866
2867         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2868                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2869                         continue;
2870                 if (++idx <= state->start)
2871                         continue;
2872                 if (state->filter_wiphy != -1 &&
2873                     state->filter_wiphy != rdev->wiphy_idx)
2874                         continue;
2875                 /* attempt to fit multiple wiphy data chunks into the skb */
2876                 do {
2877                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2878                                                  skb,
2879                                                  NETLINK_CB(cb->skb).portid,
2880                                                  cb->nlh->nlmsg_seq,
2881                                                  NLM_F_MULTI, state);
2882                         if (ret < 0) {
2883                                 /*
2884                                  * If sending the wiphy data didn't fit (ENOBUFS
2885                                  * or EMSGSIZE returned), this SKB is still
2886                                  * empty (so it's not too big because another
2887                                  * wiphy dataset is already in the skb) and
2888                                  * we've not tried to adjust the dump allocation
2889                                  * yet ... then adjust the alloc size to be
2890                                  * bigger, and return 1 but with the empty skb.
2891                                  * This results in an empty message being RX'ed
2892                                  * in userspace, but that is ignored.
2893                                  *
2894                                  * We can then retry with the larger buffer.
2895                                  */
2896                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2897                                     !skb->len && !state->split &&
2898                                     cb->min_dump_alloc < 4096) {
2899                                         cb->min_dump_alloc = 4096;
2900                                         state->split_start = 0;
2901                                         rtnl_unlock();
2902                                         return 1;
2903                                 }
2904                                 idx--;
2905                                 break;
2906                         }
2907                 } while (state->split_start > 0);
2908                 break;
2909         }
2910         rtnl_unlock();
2911
2912         state->start = idx;
2913
2914         return skb->len;
2915 }
2916
2917 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2918 {
2919         kfree((void *)cb->args[0]);
2920         return 0;
2921 }
2922
2923 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2924 {
2925         struct sk_buff *msg;
2926         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2927         struct nl80211_dump_wiphy_state state = {};
2928
2929         msg = nlmsg_new(4096, GFP_KERNEL);
2930         if (!msg)
2931                 return -ENOMEM;
2932
2933         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2934                                info->snd_portid, info->snd_seq, 0,
2935                                &state) < 0) {
2936                 nlmsg_free(msg);
2937                 return -ENOBUFS;
2938         }
2939
2940         return genlmsg_reply(msg, info);
2941 }
2942
2943 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2944         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2945         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2946         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2947         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2948         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2949 };
2950
2951 static int parse_txq_params(struct nlattr *tb[],
2952                             struct ieee80211_txq_params *txq_params)
2953 {
2954         u8 ac;
2955
2956         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2957             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2958             !tb[NL80211_TXQ_ATTR_AIFS])
2959                 return -EINVAL;
2960
2961         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2962         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2963         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2964         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2965         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2966
2967         if (ac >= NL80211_NUM_ACS)
2968                 return -EINVAL;
2969         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2970         return 0;
2971 }
2972
2973 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2974 {
2975         /*
2976          * You can only set the channel explicitly for some interfaces,
2977          * most have their channel managed via their respective
2978          * "establish a connection" command (connect, join, ...)
2979          *
2980          * For AP/GO and mesh mode, the channel can be set with the
2981          * channel userspace API, but is only stored and passed to the
2982          * low-level driver when the AP starts or the mesh is joined.
2983          * This is for backward compatibility, userspace can also give
2984          * the channel in the start-ap or join-mesh commands instead.
2985          *
2986          * Monitors are special as they are normally slaved to
2987          * whatever else is going on, so they have their own special
2988          * operation to set the monitor channel if possible.
2989          */
2990         return !wdev ||
2991                 wdev->iftype == NL80211_IFTYPE_AP ||
2992                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2993                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2994                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2995 }
2996
2997 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2998                           struct genl_info *info,
2999                           struct cfg80211_chan_def *chandef)
3000 {
3001         struct netlink_ext_ack *extack = info->extack;
3002         struct nlattr **attrs = info->attrs;
3003         u32 control_freq;
3004
3005         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3006                 return -EINVAL;
3007
3008         control_freq = MHZ_TO_KHZ(
3009                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3010         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3011                 control_freq +=
3012                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3013
3014         memset(chandef, 0, sizeof(*chandef));
3015         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3016         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3017         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3018         chandef->freq1_offset = control_freq % 1000;
3019         chandef->center_freq2 = 0;
3020
3021         /* Primary channel not allowed */
3022         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3023                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3024                                     "Channel is disabled");
3025                 return -EINVAL;
3026         }
3027
3028         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3029                 enum nl80211_channel_type chantype;
3030
3031                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3032
3033                 switch (chantype) {
3034                 case NL80211_CHAN_NO_HT:
3035                 case NL80211_CHAN_HT20:
3036                 case NL80211_CHAN_HT40PLUS:
3037                 case NL80211_CHAN_HT40MINUS:
3038                         cfg80211_chandef_create(chandef, chandef->chan,
3039                                                 chantype);
3040                         /* user input for center_freq is incorrect */
3041                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3042                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3043                                 NL_SET_ERR_MSG_ATTR(extack,
3044                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3045                                                     "bad center frequency 1");
3046                                 return -EINVAL;
3047                         }
3048                         /* center_freq2 must be zero */
3049                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3050                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3051                                 NL_SET_ERR_MSG_ATTR(extack,
3052                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3053                                                     "center frequency 2 can't be used");
3054                                 return -EINVAL;
3055                         }
3056                         break;
3057                 default:
3058                         NL_SET_ERR_MSG_ATTR(extack,
3059                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3060                                             "invalid channel type");
3061                         return -EINVAL;
3062                 }
3063         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3064                 chandef->width =
3065                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3066                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3067                         chandef->center_freq1 =
3068                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3069                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3070                                 chandef->freq1_offset = nla_get_u32(
3071                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3072                         else
3073                                 chandef->freq1_offset = 0;
3074                 }
3075                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3076                         chandef->center_freq2 =
3077                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3078         }
3079
3080         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3081                 chandef->edmg.channels =
3082                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3083
3084                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3085                         chandef->edmg.bw_config =
3086                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3087         } else {
3088                 chandef->edmg.bw_config = 0;
3089                 chandef->edmg.channels = 0;
3090         }
3091
3092         if (!cfg80211_chandef_valid(chandef)) {
3093                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3094                 return -EINVAL;
3095         }
3096
3097         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3098                                      IEEE80211_CHAN_DISABLED)) {
3099                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3100                 return -EINVAL;
3101         }
3102
3103         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3104              chandef->width == NL80211_CHAN_WIDTH_10) &&
3105             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3106                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3107                 return -EINVAL;
3108         }
3109
3110         return 0;
3111 }
3112
3113 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3114                                  struct net_device *dev,
3115                                  struct genl_info *info)
3116 {
3117         struct cfg80211_chan_def chandef;
3118         int result;
3119         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3120         struct wireless_dev *wdev = NULL;
3121
3122         if (dev)
3123                 wdev = dev->ieee80211_ptr;
3124         if (!nl80211_can_set_dev_channel(wdev))
3125                 return -EOPNOTSUPP;
3126         if (wdev)
3127                 iftype = wdev->iftype;
3128
3129         result = nl80211_parse_chandef(rdev, info, &chandef);
3130         if (result)
3131                 return result;
3132
3133         switch (iftype) {
3134         case NL80211_IFTYPE_AP:
3135         case NL80211_IFTYPE_P2P_GO:
3136                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3137                                                    iftype)) {
3138                         result = -EINVAL;
3139                         break;
3140                 }
3141                 if (wdev->beacon_interval) {
3142                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3143                             !(rdev->wiphy.features &
3144                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3145                                 result = -EBUSY;
3146                                 break;
3147                         }
3148
3149                         /* Only allow dynamic channel width changes */
3150                         if (chandef.chan != wdev->preset_chandef.chan) {
3151                                 result = -EBUSY;
3152                                 break;
3153                         }
3154                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3155                         if (result)
3156                                 break;
3157                 }
3158                 wdev->preset_chandef = chandef;
3159                 result = 0;
3160                 break;
3161         case NL80211_IFTYPE_MESH_POINT:
3162                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3163                 break;
3164         case NL80211_IFTYPE_MONITOR:
3165                 result = cfg80211_set_monitor_channel(rdev, &chandef);
3166                 break;
3167         default:
3168                 result = -EINVAL;
3169         }
3170
3171         return result;
3172 }
3173
3174 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3175 {
3176         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3177         struct net_device *netdev = info->user_ptr[1];
3178
3179         return __nl80211_set_channel(rdev, netdev, info);
3180 }
3181
3182 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3183 {
3184         struct cfg80211_registered_device *rdev = NULL;
3185         struct net_device *netdev = NULL;
3186         struct wireless_dev *wdev;
3187         int result = 0, rem_txq_params = 0;
3188         struct nlattr *nl_txq_params;
3189         u32 changed;
3190         u8 retry_short = 0, retry_long = 0;
3191         u32 frag_threshold = 0, rts_threshold = 0;
3192         u8 coverage_class = 0;
3193         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3194
3195         rtnl_lock();
3196         /*
3197          * Try to find the wiphy and netdev. Normally this
3198          * function shouldn't need the netdev, but this is
3199          * done for backward compatibility -- previously
3200          * setting the channel was done per wiphy, but now
3201          * it is per netdev. Previous userland like hostapd
3202          * also passed a netdev to set_wiphy, so that it is
3203          * possible to let that go to the right netdev!
3204          */
3205
3206         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3207                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3208
3209                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3210                 if (netdev && netdev->ieee80211_ptr)
3211                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3212                 else
3213                         netdev = NULL;
3214         }
3215
3216         if (!netdev) {
3217                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3218                                                   info->attrs);
3219                 if (IS_ERR(rdev)) {
3220                         rtnl_unlock();
3221                         return PTR_ERR(rdev);
3222                 }
3223                 wdev = NULL;
3224                 netdev = NULL;
3225                 result = 0;
3226         } else
3227                 wdev = netdev->ieee80211_ptr;
3228
3229         wiphy_lock(&rdev->wiphy);
3230
3231         /*
3232          * end workaround code, by now the rdev is available
3233          * and locked, and wdev may or may not be NULL.
3234          */
3235
3236         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3237                 result = cfg80211_dev_rename(
3238                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3239         rtnl_unlock();
3240
3241         if (result)
3242                 goto out;
3243
3244         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3245                 struct ieee80211_txq_params txq_params;
3246                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3247
3248                 if (!rdev->ops->set_txq_params) {
3249                         result = -EOPNOTSUPP;
3250                         goto out;
3251                 }
3252
3253                 if (!netdev) {
3254                         result = -EINVAL;
3255                         goto out;
3256                 }
3257
3258                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3259                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3260                         result = -EINVAL;
3261                         goto out;
3262                 }
3263
3264                 if (!netif_running(netdev)) {
3265                         result = -ENETDOWN;
3266                         goto out;
3267                 }
3268
3269                 nla_for_each_nested(nl_txq_params,
3270                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3271                                     rem_txq_params) {
3272                         result = nla_parse_nested_deprecated(tb,
3273                                                              NL80211_TXQ_ATTR_MAX,
3274                                                              nl_txq_params,
3275                                                              txq_params_policy,
3276                                                              info->extack);
3277                         if (result)
3278                                 goto out;
3279                         result = parse_txq_params(tb, &txq_params);
3280                         if (result)
3281                                 goto out;
3282
3283                         result = rdev_set_txq_params(rdev, netdev,
3284                                                      &txq_params);
3285                         if (result)
3286                                 goto out;
3287                 }
3288         }
3289
3290         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3291                 result = __nl80211_set_channel(
3292                         rdev,
3293                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3294                         info);
3295                 if (result)
3296                         goto out;
3297         }
3298
3299         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3300                 struct wireless_dev *txp_wdev = wdev;
3301                 enum nl80211_tx_power_setting type;
3302                 int idx, mbm = 0;
3303
3304                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3305                         txp_wdev = NULL;
3306
3307                 if (!rdev->ops->set_tx_power) {
3308                         result = -EOPNOTSUPP;
3309                         goto out;
3310                 }
3311
3312                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3313                 type = nla_get_u32(info->attrs[idx]);
3314
3315                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3316                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3317                         result = -EINVAL;
3318                         goto out;
3319                 }
3320
3321                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3322                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3323                         mbm = nla_get_u32(info->attrs[idx]);
3324                 }
3325
3326                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3327                 if (result)
3328                         goto out;
3329         }
3330
3331         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3332             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3333                 u32 tx_ant, rx_ant;
3334
3335                 if ((!rdev->wiphy.available_antennas_tx &&
3336                      !rdev->wiphy.available_antennas_rx) ||
3337                     !rdev->ops->set_antenna) {
3338                         result = -EOPNOTSUPP;
3339                         goto out;
3340                 }
3341
3342                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3343                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3344
3345                 /* reject antenna configurations which don't match the
3346                  * available antenna masks, except for the "all" mask */
3347                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3348                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3349                         result = -EINVAL;
3350                         goto out;
3351                 }
3352
3353                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3354                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3355
3356                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3357                 if (result)
3358                         goto out;
3359         }
3360
3361         changed = 0;
3362
3363         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3364                 retry_short = nla_get_u8(
3365                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3366
3367                 changed |= WIPHY_PARAM_RETRY_SHORT;
3368         }
3369
3370         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3371                 retry_long = nla_get_u8(
3372                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3373
3374                 changed |= WIPHY_PARAM_RETRY_LONG;
3375         }
3376
3377         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3378                 frag_threshold = nla_get_u32(
3379                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3380                 if (frag_threshold < 256) {
3381                         result = -EINVAL;
3382                         goto out;
3383                 }
3384
3385                 if (frag_threshold != (u32) -1) {
3386                         /*
3387                          * Fragments (apart from the last one) are required to
3388                          * have even length. Make the fragmentation code
3389                          * simpler by stripping LSB should someone try to use
3390                          * odd threshold value.
3391                          */
3392                         frag_threshold &= ~0x1;
3393                 }
3394                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3395         }
3396
3397         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3398                 rts_threshold = nla_get_u32(
3399                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3400                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3401         }
3402
3403         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3404                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3405                         result = -EINVAL;
3406                         goto out;
3407                 }
3408
3409                 coverage_class = nla_get_u8(
3410                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3411                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3412         }
3413
3414         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3415                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3416                         result = -EOPNOTSUPP;
3417                         goto out;
3418                 }
3419
3420                 changed |= WIPHY_PARAM_DYN_ACK;
3421         }
3422
3423         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3424                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3425                                              NL80211_EXT_FEATURE_TXQS)) {
3426                         result = -EOPNOTSUPP;
3427                         goto out;
3428                 }
3429                 txq_limit = nla_get_u32(
3430                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3431                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3432         }
3433
3434         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3435                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3436                                              NL80211_EXT_FEATURE_TXQS)) {
3437                         result = -EOPNOTSUPP;
3438                         goto out;
3439                 }
3440                 txq_memory_limit = nla_get_u32(
3441                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3442                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3443         }
3444
3445         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3446                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3447                                              NL80211_EXT_FEATURE_TXQS)) {
3448                         result = -EOPNOTSUPP;
3449                         goto out;
3450                 }
3451                 txq_quantum = nla_get_u32(
3452                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3453                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3454         }
3455
3456         if (changed) {
3457                 u8 old_retry_short, old_retry_long;
3458                 u32 old_frag_threshold, old_rts_threshold;
3459                 u8 old_coverage_class;
3460                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3461
3462                 if (!rdev->ops->set_wiphy_params) {
3463                         result = -EOPNOTSUPP;
3464                         goto out;
3465                 }
3466
3467                 old_retry_short = rdev->wiphy.retry_short;
3468                 old_retry_long = rdev->wiphy.retry_long;
3469                 old_frag_threshold = rdev->wiphy.frag_threshold;
3470                 old_rts_threshold = rdev->wiphy.rts_threshold;
3471                 old_coverage_class = rdev->wiphy.coverage_class;
3472                 old_txq_limit = rdev->wiphy.txq_limit;
3473                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3474                 old_txq_quantum = rdev->wiphy.txq_quantum;
3475
3476                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3477                         rdev->wiphy.retry_short = retry_short;
3478                 if (changed & WIPHY_PARAM_RETRY_LONG)
3479                         rdev->wiphy.retry_long = retry_long;
3480                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3481                         rdev->wiphy.frag_threshold = frag_threshold;
3482                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3483                         rdev->wiphy.rts_threshold = rts_threshold;
3484                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3485                         rdev->wiphy.coverage_class = coverage_class;
3486                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3487                         rdev->wiphy.txq_limit = txq_limit;
3488                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3489                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3490                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3491                         rdev->wiphy.txq_quantum = txq_quantum;
3492
3493                 result = rdev_set_wiphy_params(rdev, changed);
3494                 if (result) {
3495                         rdev->wiphy.retry_short = old_retry_short;
3496                         rdev->wiphy.retry_long = old_retry_long;
3497                         rdev->wiphy.frag_threshold = old_frag_threshold;
3498                         rdev->wiphy.rts_threshold = old_rts_threshold;
3499                         rdev->wiphy.coverage_class = old_coverage_class;
3500                         rdev->wiphy.txq_limit = old_txq_limit;
3501                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3502                         rdev->wiphy.txq_quantum = old_txq_quantum;
3503                         goto out;
3504                 }
3505         }
3506
3507         result = 0;
3508
3509 out:
3510         wiphy_unlock(&rdev->wiphy);
3511         return result;
3512 }
3513
3514 static int nl80211_send_chandef(struct sk_buff *msg,
3515                                 const struct cfg80211_chan_def *chandef)
3516 {
3517         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3518                 return -EINVAL;
3519
3520         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3521                         chandef->chan->center_freq))
3522                 return -ENOBUFS;
3523         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3524                         chandef->chan->freq_offset))
3525                 return -ENOBUFS;
3526         switch (chandef->width) {
3527         case NL80211_CHAN_WIDTH_20_NOHT:
3528         case NL80211_CHAN_WIDTH_20:
3529         case NL80211_CHAN_WIDTH_40:
3530                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3531                                 cfg80211_get_chandef_type(chandef)))
3532                         return -ENOBUFS;
3533                 break;
3534         default:
3535                 break;
3536         }
3537         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3538                 return -ENOBUFS;
3539         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3540                 return -ENOBUFS;
3541         if (chandef->center_freq2 &&
3542             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3543                 return -ENOBUFS;
3544         return 0;
3545 }
3546
3547 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3548                               struct cfg80211_registered_device *rdev,
3549                               struct wireless_dev *wdev,
3550                               enum nl80211_commands cmd)
3551 {
3552         struct net_device *dev = wdev->netdev;
3553         void *hdr;
3554
3555         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3556                 cmd != NL80211_CMD_DEL_INTERFACE &&
3557                 cmd != NL80211_CMD_SET_INTERFACE);
3558
3559         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3560         if (!hdr)
3561                 return -1;
3562
3563         if (dev &&
3564             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3565              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3566                 goto nla_put_failure;
3567
3568         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3569             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3570             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3571                               NL80211_ATTR_PAD) ||
3572             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3573             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3574                         rdev->devlist_generation ^
3575                         (cfg80211_rdev_list_generation << 2)) ||
3576             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3577                 goto nla_put_failure;
3578
3579         if (rdev->ops->get_channel) {
3580                 int ret;
3581                 struct cfg80211_chan_def chandef = {};
3582
3583                 ret = rdev_get_channel(rdev, wdev, &chandef);
3584                 if (ret == 0) {
3585                         if (nl80211_send_chandef(msg, &chandef))
3586                                 goto nla_put_failure;
3587                 }
3588         }
3589
3590         if (rdev->ops->get_tx_power) {
3591                 int dbm, ret;
3592
3593                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3594                 if (ret == 0 &&
3595                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3596                                 DBM_TO_MBM(dbm)))
3597                         goto nla_put_failure;
3598         }
3599
3600         wdev_lock(wdev);
3601         switch (wdev->iftype) {
3602         case NL80211_IFTYPE_AP:
3603                 if (wdev->ssid_len &&
3604                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3605                         goto nla_put_failure_locked;
3606                 break;
3607         case NL80211_IFTYPE_STATION:
3608         case NL80211_IFTYPE_P2P_CLIENT:
3609         case NL80211_IFTYPE_ADHOC: {
3610                 const u8 *ssid_ie;
3611                 if (!wdev->current_bss)
3612                         break;
3613                 rcu_read_lock();
3614                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3615                                                WLAN_EID_SSID);
3616                 if (ssid_ie &&
3617                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3618                         goto nla_put_failure_rcu_locked;
3619                 rcu_read_unlock();
3620                 break;
3621                 }
3622         default:
3623                 /* nothing */
3624                 break;
3625         }
3626         wdev_unlock(wdev);
3627
3628         if (rdev->ops->get_txq_stats) {
3629                 struct cfg80211_txq_stats txqstats = {};
3630                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3631
3632                 if (ret == 0 &&
3633                     !nl80211_put_txq_stats(msg, &txqstats,
3634                                            NL80211_ATTR_TXQ_STATS))
3635                         goto nla_put_failure;
3636         }
3637
3638         genlmsg_end(msg, hdr);
3639         return 0;
3640
3641  nla_put_failure_rcu_locked:
3642         rcu_read_unlock();
3643  nla_put_failure_locked:
3644         wdev_unlock(wdev);
3645  nla_put_failure:
3646         genlmsg_cancel(msg, hdr);
3647         return -EMSGSIZE;
3648 }
3649
3650 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3651 {
3652         int wp_idx = 0;
3653         int if_idx = 0;
3654         int wp_start = cb->args[0];
3655         int if_start = cb->args[1];
3656         int filter_wiphy = -1;
3657         struct cfg80211_registered_device *rdev;
3658         struct wireless_dev *wdev;
3659         int ret;
3660
3661         rtnl_lock();
3662         if (!cb->args[2]) {
3663                 struct nl80211_dump_wiphy_state state = {
3664                         .filter_wiphy = -1,
3665                 };
3666
3667                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3668                 if (ret)
3669                         goto out_unlock;
3670
3671                 filter_wiphy = state.filter_wiphy;
3672
3673                 /*
3674                  * if filtering, set cb->args[2] to +1 since 0 is the default
3675                  * value needed to determine that parsing is necessary.
3676                  */
3677                 if (filter_wiphy >= 0)
3678                         cb->args[2] = filter_wiphy + 1;
3679                 else
3680                         cb->args[2] = -1;
3681         } else if (cb->args[2] > 0) {
3682                 filter_wiphy = cb->args[2] - 1;
3683         }
3684
3685         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3686                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3687                         continue;
3688                 if (wp_idx < wp_start) {
3689                         wp_idx++;
3690                         continue;
3691                 }
3692
3693                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3694                         continue;
3695
3696                 if_idx = 0;
3697
3698                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3699                         if (if_idx < if_start) {
3700                                 if_idx++;
3701                                 continue;
3702                         }
3703                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3704                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3705                                                rdev, wdev,
3706                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3707                                 goto out;
3708                         }
3709                         if_idx++;
3710                 }
3711
3712                 wp_idx++;
3713         }
3714  out:
3715         cb->args[0] = wp_idx;
3716         cb->args[1] = if_idx;
3717
3718         ret = skb->len;
3719  out_unlock:
3720         rtnl_unlock();
3721
3722         return ret;
3723 }
3724
3725 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3726 {
3727         struct sk_buff *msg;
3728         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3729         struct wireless_dev *wdev = info->user_ptr[1];
3730
3731         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3732         if (!msg)
3733                 return -ENOMEM;
3734
3735         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3736                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3737                 nlmsg_free(msg);
3738                 return -ENOBUFS;
3739         }
3740
3741         return genlmsg_reply(msg, info);
3742 }
3743
3744 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3745         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3746         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3747         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3748         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3749         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3750         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3751 };
3752
3753 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3754 {
3755         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3756         int flag;
3757
3758         *mntrflags = 0;
3759
3760         if (!nla)
3761                 return -EINVAL;
3762
3763         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3764                 return -EINVAL;
3765
3766         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3767                 if (flags[flag])
3768                         *mntrflags |= (1<<flag);
3769
3770         *mntrflags |= MONITOR_FLAG_CHANGED;
3771
3772         return 0;
3773 }
3774
3775 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3776                                      enum nl80211_iftype type,
3777                                      struct genl_info *info,
3778                                      struct vif_params *params)
3779 {
3780         bool change = false;
3781         int err;
3782
3783         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3784                 if (type != NL80211_IFTYPE_MONITOR)
3785                         return -EINVAL;
3786
3787                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3788                                           &params->flags);
3789                 if (err)
3790                         return err;
3791
3792                 change = true;
3793         }
3794
3795         if (params->flags & MONITOR_FLAG_ACTIVE &&
3796             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3797                 return -EOPNOTSUPP;
3798
3799         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3800                 const u8 *mumimo_groups;
3801                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3802
3803                 if (type != NL80211_IFTYPE_MONITOR)
3804                         return -EINVAL;
3805
3806                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3807                         return -EOPNOTSUPP;
3808
3809                 mumimo_groups =
3810                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3811
3812                 /* bits 0 and 63 are reserved and must be zero */
3813                 if ((mumimo_groups[0] & BIT(0)) ||
3814                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3815                         return -EINVAL;
3816
3817                 params->vht_mumimo_groups = mumimo_groups;
3818                 change = true;
3819         }
3820
3821         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3822                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3823
3824                 if (type != NL80211_IFTYPE_MONITOR)
3825                         return -EINVAL;
3826
3827                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3828                         return -EOPNOTSUPP;
3829
3830                 params->vht_mumimo_follow_addr =
3831                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3832                 change = true;
3833         }
3834
3835         return change ? 1 : 0;
3836 }
3837
3838 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3839                                struct net_device *netdev, u8 use_4addr,
3840                                enum nl80211_iftype iftype)
3841 {
3842         if (!use_4addr) {
3843                 if (netdev && netif_is_bridge_port(netdev))
3844                         return -EBUSY;
3845                 return 0;
3846         }
3847
3848         switch (iftype) {
3849         case NL80211_IFTYPE_AP_VLAN:
3850                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3851                         return 0;
3852                 break;
3853         case NL80211_IFTYPE_STATION:
3854                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3855                         return 0;
3856                 break;
3857         default:
3858                 break;
3859         }
3860
3861         return -EOPNOTSUPP;
3862 }
3863
3864 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3865 {
3866         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3867         struct vif_params params;
3868         int err;
3869         enum nl80211_iftype otype, ntype;
3870         struct net_device *dev = info->user_ptr[1];
3871         bool change = false;
3872
3873         memset(&params, 0, sizeof(params));
3874
3875         otype = ntype = dev->ieee80211_ptr->iftype;
3876
3877         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3878                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3879                 if (otype != ntype)
3880                         change = true;
3881         }
3882
3883         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3884                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3885
3886                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3887                         return -EINVAL;
3888                 if (netif_running(dev))
3889                         return -EBUSY;
3890
3891                 wdev_lock(wdev);
3892                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3893                              IEEE80211_MAX_MESH_ID_LEN);
3894                 wdev->mesh_id_up_len =
3895                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3896                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3897                        wdev->mesh_id_up_len);
3898                 wdev_unlock(wdev);
3899         }
3900
3901         if (info->attrs[NL80211_ATTR_4ADDR]) {
3902                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3903                 change = true;
3904                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3905                 if (err)
3906                         return err;
3907         } else {
3908                 params.use_4addr = -1;
3909         }
3910
3911         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3912         if (err < 0)
3913                 return err;
3914         if (err > 0)
3915                 change = true;
3916
3917         if (change)
3918                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3919         else
3920                 err = 0;
3921
3922         if (!err && params.use_4addr != -1)
3923                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3924
3925         if (change && !err) {
3926                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3927
3928                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3929         }
3930
3931         return err;
3932 }
3933
3934 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3935 {
3936         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3937         struct vif_params params;
3938         struct wireless_dev *wdev;
3939         struct sk_buff *msg;
3940         int err;
3941         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3942
3943         memset(&params, 0, sizeof(params));
3944
3945         if (!info->attrs[NL80211_ATTR_IFNAME])
3946                 return -EINVAL;
3947
3948         if (info->attrs[NL80211_ATTR_IFTYPE])
3949                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3950
3951         if (!rdev->ops->add_virtual_intf)
3952                 return -EOPNOTSUPP;
3953
3954         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3955              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3956             info->attrs[NL80211_ATTR_MAC]) {
3957                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3958                            ETH_ALEN);
3959                 if (!is_valid_ether_addr(params.macaddr))
3960                         return -EADDRNOTAVAIL;
3961         }
3962
3963         if (info->attrs[NL80211_ATTR_4ADDR]) {
3964                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3965                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3966                 if (err)
3967                         return err;
3968         }
3969
3970         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3971                 return -EOPNOTSUPP;
3972
3973         err = nl80211_parse_mon_options(rdev, type, info, &params);
3974         if (err < 0)
3975                 return err;
3976
3977         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3978         if (!msg)
3979                 return -ENOMEM;
3980
3981         wdev = rdev_add_virtual_intf(rdev,
3982                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3983                                 NET_NAME_USER, type, &params);
3984         if (WARN_ON(!wdev)) {
3985                 nlmsg_free(msg);
3986                 return -EPROTO;
3987         } else if (IS_ERR(wdev)) {
3988                 nlmsg_free(msg);
3989                 return PTR_ERR(wdev);
3990         }
3991
3992         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3993                 wdev->owner_nlportid = info->snd_portid;
3994
3995         switch (type) {
3996         case NL80211_IFTYPE_MESH_POINT:
3997                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3998                         break;
3999                 wdev_lock(wdev);
4000                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4001                              IEEE80211_MAX_MESH_ID_LEN);
4002                 wdev->mesh_id_up_len =
4003                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4004                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4005                        wdev->mesh_id_up_len);
4006                 wdev_unlock(wdev);
4007                 break;
4008         case NL80211_IFTYPE_NAN:
4009         case NL80211_IFTYPE_P2P_DEVICE:
4010                 /*
4011                  * P2P Device and NAN do not have a netdev, so don't go
4012                  * through the netdev notifier and must be added here
4013                  */
4014                 cfg80211_init_wdev(wdev);
4015                 cfg80211_register_wdev(rdev, wdev);
4016                 break;
4017         default:
4018                 break;
4019         }
4020
4021         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4022                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4023                 nlmsg_free(msg);
4024                 return -ENOBUFS;
4025         }
4026
4027         return genlmsg_reply(msg, info);
4028 }
4029
4030 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4031 {
4032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4033         int ret;
4034
4035         /* to avoid failing a new interface creation due to pending removal */
4036         cfg80211_destroy_ifaces(rdev);
4037
4038         wiphy_lock(&rdev->wiphy);
4039         ret = _nl80211_new_interface(skb, info);
4040         wiphy_unlock(&rdev->wiphy);
4041
4042         return ret;
4043 }
4044
4045 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4046 {
4047         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4048         struct wireless_dev *wdev = info->user_ptr[1];
4049
4050         if (!rdev->ops->del_virtual_intf)
4051                 return -EOPNOTSUPP;
4052
4053         /*
4054          * We hold RTNL, so this is safe, without RTNL opencount cannot
4055          * reach 0, and thus the rdev cannot be deleted.
4056          *
4057          * We need to do it for the dev_close(), since that will call
4058          * the netdev notifiers, and we need to acquire the mutex there
4059          * but don't know if we get there from here or from some other
4060          * place (e.g. "ip link set ... down").
4061          */
4062         mutex_unlock(&rdev->wiphy.mtx);
4063
4064         /*
4065          * If we remove a wireless device without a netdev then clear
4066          * user_ptr[1] so that nl80211_post_doit won't dereference it
4067          * to check if it needs to do dev_put(). Otherwise it crashes
4068          * since the wdev has been freed, unlike with a netdev where
4069          * we need the dev_put() for the netdev to really be freed.
4070          */
4071         if (!wdev->netdev)
4072                 info->user_ptr[1] = NULL;
4073         else
4074                 dev_close(wdev->netdev);
4075
4076         mutex_lock(&rdev->wiphy.mtx);
4077
4078         return rdev_del_virtual_intf(rdev, wdev);
4079 }
4080
4081 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4082 {
4083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4084         struct net_device *dev = info->user_ptr[1];
4085         u16 noack_map;
4086
4087         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4088                 return -EINVAL;
4089
4090         if (!rdev->ops->set_noack_map)
4091                 return -EOPNOTSUPP;
4092
4093         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4094
4095         return rdev_set_noack_map(rdev, dev, noack_map);
4096 }
4097
4098 struct get_key_cookie {
4099         struct sk_buff *msg;
4100         int error;
4101         int idx;
4102 };
4103
4104 static void get_key_callback(void *c, struct key_params *params)
4105 {
4106         struct nlattr *key;
4107         struct get_key_cookie *cookie = c;
4108
4109         if ((params->key &&
4110              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4111                      params->key_len, params->key)) ||
4112             (params->seq &&
4113              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4114                      params->seq_len, params->seq)) ||
4115             (params->cipher &&
4116              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4117                          params->cipher)))
4118                 goto nla_put_failure;
4119
4120         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4121         if (!key)
4122                 goto nla_put_failure;
4123
4124         if ((params->key &&
4125              nla_put(cookie->msg, NL80211_KEY_DATA,
4126                      params->key_len, params->key)) ||
4127             (params->seq &&
4128              nla_put(cookie->msg, NL80211_KEY_SEQ,
4129                      params->seq_len, params->seq)) ||
4130             (params->cipher &&
4131              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4132                          params->cipher)))
4133                 goto nla_put_failure;
4134
4135         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4136                 goto nla_put_failure;
4137
4138         nla_nest_end(cookie->msg, key);
4139
4140         return;
4141  nla_put_failure:
4142         cookie->error = 1;
4143 }
4144
4145 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4146 {
4147         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4148         int err;
4149         struct net_device *dev = info->user_ptr[1];
4150         u8 key_idx = 0;
4151         const u8 *mac_addr = NULL;
4152         bool pairwise;
4153         struct get_key_cookie cookie = {
4154                 .error = 0,
4155         };
4156         void *hdr;
4157         struct sk_buff *msg;
4158         bool bigtk_support = false;
4159
4160         if (wiphy_ext_feature_isset(&rdev->wiphy,
4161                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4162                 bigtk_support = true;
4163
4164         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4165              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4166             wiphy_ext_feature_isset(&rdev->wiphy,
4167                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4168                 bigtk_support = true;
4169
4170         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4171                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4172
4173                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4174                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4175                         return -EINVAL;
4176                 }
4177         }
4178
4179         if (info->attrs[NL80211_ATTR_MAC])
4180                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4181
4182         pairwise = !!mac_addr;
4183         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4184                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4185
4186                 if (kt != NL80211_KEYTYPE_GROUP &&
4187                     kt != NL80211_KEYTYPE_PAIRWISE)
4188                         return -EINVAL;
4189                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4190         }
4191
4192         if (!rdev->ops->get_key)
4193                 return -EOPNOTSUPP;
4194
4195         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4196                 return -ENOENT;
4197
4198         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4199         if (!msg)
4200                 return -ENOMEM;
4201
4202         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4203                              NL80211_CMD_NEW_KEY);
4204         if (!hdr)
4205                 goto nla_put_failure;
4206
4207         cookie.msg = msg;
4208         cookie.idx = key_idx;
4209
4210         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4211             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4212                 goto nla_put_failure;
4213         if (mac_addr &&
4214             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4215                 goto nla_put_failure;
4216
4217         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4218                            get_key_callback);
4219
4220         if (err)
4221                 goto free_msg;
4222
4223         if (cookie.error)
4224                 goto nla_put_failure;
4225
4226         genlmsg_end(msg, hdr);
4227         return genlmsg_reply(msg, info);
4228
4229  nla_put_failure:
4230         err = -ENOBUFS;
4231  free_msg:
4232         nlmsg_free(msg);
4233         return err;
4234 }
4235
4236 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4237 {
4238         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4239         struct key_parse key;
4240         int err;
4241         struct net_device *dev = info->user_ptr[1];
4242
4243         err = nl80211_parse_key(info, &key);
4244         if (err)
4245                 return err;
4246
4247         if (key.idx < 0)
4248                 return -EINVAL;
4249
4250         /* Only support setting default key and
4251          * Extended Key ID action NL80211_KEY_SET_TX.
4252          */
4253         if (!key.def && !key.defmgmt && !key.defbeacon &&
4254             !(key.p.mode == NL80211_KEY_SET_TX))
4255                 return -EINVAL;
4256
4257         wdev_lock(dev->ieee80211_ptr);
4258
4259         if (key.def) {
4260                 if (!rdev->ops->set_default_key) {
4261                         err = -EOPNOTSUPP;
4262                         goto out;
4263                 }
4264
4265                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4266                 if (err)
4267                         goto out;
4268
4269                 err = rdev_set_default_key(rdev, dev, key.idx,
4270                                                  key.def_uni, key.def_multi);
4271
4272                 if (err)
4273                         goto out;
4274
4275 #ifdef CONFIG_CFG80211_WEXT
4276                 dev->ieee80211_ptr->wext.default_key = key.idx;
4277 #endif
4278         } else if (key.defmgmt) {
4279                 if (key.def_uni || !key.def_multi) {
4280                         err = -EINVAL;
4281                         goto out;
4282                 }
4283
4284                 if (!rdev->ops->set_default_mgmt_key) {
4285                         err = -EOPNOTSUPP;
4286                         goto out;
4287                 }
4288
4289                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4290                 if (err)
4291                         goto out;
4292
4293                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4294                 if (err)
4295                         goto out;
4296
4297 #ifdef CONFIG_CFG80211_WEXT
4298                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4299 #endif
4300         } else if (key.defbeacon) {
4301                 if (key.def_uni || !key.def_multi) {
4302                         err = -EINVAL;
4303                         goto out;
4304                 }
4305
4306                 if (!rdev->ops->set_default_beacon_key) {
4307                         err = -EOPNOTSUPP;
4308                         goto out;
4309                 }
4310
4311                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4312                 if (err)
4313                         goto out;
4314
4315                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4316                 if (err)
4317                         goto out;
4318         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4319                    wiphy_ext_feature_isset(&rdev->wiphy,
4320                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4321                 u8 *mac_addr = NULL;
4322
4323                 if (info->attrs[NL80211_ATTR_MAC])
4324                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4325
4326                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4327                         err = -EINVAL;
4328                         goto out;
4329                 }
4330
4331                 err = rdev_add_key(rdev, dev, key.idx,
4332                                    NL80211_KEYTYPE_PAIRWISE,
4333                                    mac_addr, &key.p);
4334         } else {
4335                 err = -EINVAL;
4336         }
4337  out:
4338         wdev_unlock(dev->ieee80211_ptr);
4339
4340         return err;
4341 }
4342
4343 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4344 {
4345         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4346         int err;
4347         struct net_device *dev = info->user_ptr[1];
4348         struct key_parse key;
4349         const u8 *mac_addr = NULL;
4350
4351         err = nl80211_parse_key(info, &key);
4352         if (err)
4353                 return err;
4354
4355         if (!key.p.key) {
4356                 GENL_SET_ERR_MSG(info, "no key");
4357                 return -EINVAL;
4358         }
4359
4360         if (info->attrs[NL80211_ATTR_MAC])
4361                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4362
4363         if (key.type == -1) {
4364                 if (mac_addr)
4365                         key.type = NL80211_KEYTYPE_PAIRWISE;
4366                 else
4367                         key.type = NL80211_KEYTYPE_GROUP;
4368         }
4369
4370         /* for now */
4371         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4372             key.type != NL80211_KEYTYPE_GROUP) {
4373                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4374                 return -EINVAL;
4375         }
4376
4377         if (key.type == NL80211_KEYTYPE_GROUP &&
4378             info->attrs[NL80211_ATTR_VLAN_ID])
4379                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4380
4381         if (!rdev->ops->add_key)
4382                 return -EOPNOTSUPP;
4383
4384         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4385                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4386                                            mac_addr)) {
4387                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4388                 return -EINVAL;
4389         }
4390
4391         wdev_lock(dev->ieee80211_ptr);
4392         err = nl80211_key_allowed(dev->ieee80211_ptr);
4393         if (err)
4394                 GENL_SET_ERR_MSG(info, "key not allowed");
4395         if (!err) {
4396                 err = rdev_add_key(rdev, dev, key.idx,
4397                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4398                                     mac_addr, &key.p);
4399                 if (err)
4400                         GENL_SET_ERR_MSG(info, "key addition failed");
4401         }
4402         wdev_unlock(dev->ieee80211_ptr);
4403
4404         return err;
4405 }
4406
4407 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4408 {
4409         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4410         int err;
4411         struct net_device *dev = info->user_ptr[1];
4412         u8 *mac_addr = NULL;
4413         struct key_parse key;
4414
4415         err = nl80211_parse_key(info, &key);
4416         if (err)
4417                 return err;
4418
4419         if (info->attrs[NL80211_ATTR_MAC])
4420                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4421
4422         if (key.type == -1) {
4423                 if (mac_addr)
4424                         key.type = NL80211_KEYTYPE_PAIRWISE;
4425                 else
4426                         key.type = NL80211_KEYTYPE_GROUP;
4427         }
4428
4429         /* for now */
4430         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4431             key.type != NL80211_KEYTYPE_GROUP)
4432                 return -EINVAL;
4433
4434         if (!cfg80211_valid_key_idx(rdev, key.idx,
4435                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4436                 return -EINVAL;
4437
4438         if (!rdev->ops->del_key)
4439                 return -EOPNOTSUPP;
4440
4441         wdev_lock(dev->ieee80211_ptr);
4442         err = nl80211_key_allowed(dev->ieee80211_ptr);
4443
4444         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4445             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4446                 err = -ENOENT;
4447
4448         if (!err)
4449                 err = rdev_del_key(rdev, dev, key.idx,
4450                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4451                                    mac_addr);
4452
4453 #ifdef CONFIG_CFG80211_WEXT
4454         if (!err) {
4455                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4456                         dev->ieee80211_ptr->wext.default_key = -1;
4457                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4458                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4459         }
4460 #endif
4461         wdev_unlock(dev->ieee80211_ptr);
4462
4463         return err;
4464 }
4465
4466 /* This function returns an error or the number of nested attributes */
4467 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4468 {
4469         struct nlattr *attr;
4470         int n_entries = 0, tmp;
4471
4472         nla_for_each_nested(attr, nl_attr, tmp) {
4473                 if (nla_len(attr) != ETH_ALEN)
4474                         return -EINVAL;
4475
4476                 n_entries++;
4477         }
4478
4479         return n_entries;
4480 }
4481
4482 /*
4483  * This function parses ACL information and allocates memory for ACL data.
4484  * On successful return, the calling function is responsible to free the
4485  * ACL buffer returned by this function.
4486  */
4487 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4488                                                 struct genl_info *info)
4489 {
4490         enum nl80211_acl_policy acl_policy;
4491         struct nlattr *attr;
4492         struct cfg80211_acl_data *acl;
4493         int i = 0, n_entries, tmp;
4494
4495         if (!wiphy->max_acl_mac_addrs)
4496                 return ERR_PTR(-EOPNOTSUPP);
4497
4498         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4499                 return ERR_PTR(-EINVAL);
4500
4501         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4502         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4503             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4504                 return ERR_PTR(-EINVAL);
4505
4506         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4507                 return ERR_PTR(-EINVAL);
4508
4509         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4510         if (n_entries < 0)
4511                 return ERR_PTR(n_entries);
4512
4513         if (n_entries > wiphy->max_acl_mac_addrs)
4514                 return ERR_PTR(-ENOTSUPP);
4515
4516         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4517         if (!acl)
4518                 return ERR_PTR(-ENOMEM);
4519
4520         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4521                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4522                 i++;
4523         }
4524
4525         acl->n_acl_entries = n_entries;
4526         acl->acl_policy = acl_policy;
4527
4528         return acl;
4529 }
4530
4531 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4532 {
4533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4534         struct net_device *dev = info->user_ptr[1];
4535         struct cfg80211_acl_data *acl;
4536         int err;
4537
4538         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4539             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4540                 return -EOPNOTSUPP;
4541
4542         if (!dev->ieee80211_ptr->beacon_interval)
4543                 return -EINVAL;
4544
4545         acl = parse_acl_data(&rdev->wiphy, info);
4546         if (IS_ERR(acl))
4547                 return PTR_ERR(acl);
4548
4549         err = rdev_set_mac_acl(rdev, dev, acl);
4550
4551         kfree(acl);
4552
4553         return err;
4554 }
4555
4556 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4557                            u8 *rates, u8 rates_len)
4558 {
4559         u8 i;
4560         u32 mask = 0;
4561
4562         for (i = 0; i < rates_len; i++) {
4563                 int rate = (rates[i] & 0x7f) * 5;
4564                 int ridx;
4565
4566                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4567                         struct ieee80211_rate *srate =
4568                                 &sband->bitrates[ridx];
4569                         if (rate == srate->bitrate) {
4570                                 mask |= 1 << ridx;
4571                                 break;
4572                         }
4573                 }
4574                 if (ridx == sband->n_bitrates)
4575                         return 0; /* rate not found */
4576         }
4577
4578         return mask;
4579 }
4580
4581 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4582                                u8 *rates, u8 rates_len,
4583                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4584 {
4585         u8 i;
4586
4587         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4588
4589         for (i = 0; i < rates_len; i++) {
4590                 int ridx, rbit;
4591
4592                 ridx = rates[i] / 8;
4593                 rbit = BIT(rates[i] % 8);
4594
4595                 /* check validity */
4596                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4597                         return false;
4598
4599                 /* check availability */
4600                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4601                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4602                         mcs[ridx] |= rbit;
4603                 else
4604                         return false;
4605         }
4606
4607         return true;
4608 }
4609
4610 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4611 {
4612         u16 mcs_mask = 0;
4613
4614         switch (vht_mcs_map) {
4615         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4616                 break;
4617         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4618                 mcs_mask = 0x00FF;
4619                 break;
4620         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4621                 mcs_mask = 0x01FF;
4622                 break;
4623         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4624                 mcs_mask = 0x03FF;
4625                 break;
4626         default:
4627                 break;
4628         }
4629
4630         return mcs_mask;
4631 }
4632
4633 static void vht_build_mcs_mask(u16 vht_mcs_map,
4634                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4635 {
4636         u8 nss;
4637
4638         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4639                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4640                 vht_mcs_map >>= 2;
4641         }
4642 }
4643
4644 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4645                              struct nl80211_txrate_vht *txrate,
4646                              u16 mcs[NL80211_VHT_NSS_MAX])
4647 {
4648         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4649         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4650         u8 i;
4651
4652         if (!sband->vht_cap.vht_supported)
4653                 return false;
4654
4655         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4656
4657         /* Build vht_mcs_mask from VHT capabilities */
4658         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4659
4660         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4661                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4662                         mcs[i] = txrate->mcs[i];
4663                 else
4664                         return false;
4665         }
4666
4667         return true;
4668 }
4669
4670 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4671 {
4672         switch (he_mcs_map) {
4673         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4674                 return 0;
4675         case IEEE80211_HE_MCS_SUPPORT_0_7:
4676                 return 0x00FF;
4677         case IEEE80211_HE_MCS_SUPPORT_0_9:
4678                 return 0x03FF;
4679         case IEEE80211_HE_MCS_SUPPORT_0_11:
4680                 return 0xFFF;
4681         default:
4682                 break;
4683         }
4684         return 0;
4685 }
4686
4687 static void he_build_mcs_mask(u16 he_mcs_map,
4688                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4689 {
4690         u8 nss;
4691
4692         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4693                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4694                 he_mcs_map >>= 2;
4695         }
4696 }
4697
4698 static u16 he_get_txmcsmap(struct genl_info *info,
4699                            const struct ieee80211_sta_he_cap *he_cap)
4700 {
4701         struct net_device *dev = info->user_ptr[1];
4702         struct wireless_dev *wdev = dev->ieee80211_ptr;
4703         __le16  tx_mcs;
4704
4705         switch (wdev->chandef.width) {
4706         case NL80211_CHAN_WIDTH_80P80:
4707                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4708                 break;
4709         case NL80211_CHAN_WIDTH_160:
4710                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4711                 break;
4712         default:
4713                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4714                 break;
4715         }
4716         return le16_to_cpu(tx_mcs);
4717 }
4718
4719 static bool he_set_mcs_mask(struct genl_info *info,
4720                             struct wireless_dev *wdev,
4721                             struct ieee80211_supported_band *sband,
4722                             struct nl80211_txrate_he *txrate,
4723                             u16 mcs[NL80211_HE_NSS_MAX])
4724 {
4725         const struct ieee80211_sta_he_cap *he_cap;
4726         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4727         u16 tx_mcs_map = 0;
4728         u8 i;
4729
4730         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4731         if (!he_cap)
4732                 return false;
4733
4734         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4735
4736         tx_mcs_map = he_get_txmcsmap(info, he_cap);
4737
4738         /* Build he_mcs_mask from HE capabilities */
4739         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4740
4741         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4742                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4743                         mcs[i] = txrate->mcs[i];
4744                 else
4745                         return false;
4746         }
4747
4748         return true;
4749 }
4750
4751 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4752                                          struct nlattr *attrs[],
4753                                          enum nl80211_attrs attr,
4754                                          struct cfg80211_bitrate_mask *mask,
4755                                          struct net_device *dev,
4756                                          bool default_all_enabled)
4757 {
4758         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4759         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4760         struct wireless_dev *wdev = dev->ieee80211_ptr;
4761         int rem, i;
4762         struct nlattr *tx_rates;
4763         struct ieee80211_supported_band *sband;
4764         u16 vht_tx_mcs_map, he_tx_mcs_map;
4765
4766         memset(mask, 0, sizeof(*mask));
4767         /* Default to all rates enabled */
4768         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4769                 const struct ieee80211_sta_he_cap *he_cap;
4770
4771                 if (!default_all_enabled)
4772                         break;
4773
4774                 sband = rdev->wiphy.bands[i];
4775
4776                 if (!sband)
4777                         continue;
4778
4779                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4780                 memcpy(mask->control[i].ht_mcs,
4781                        sband->ht_cap.mcs.rx_mask,
4782                        sizeof(mask->control[i].ht_mcs));
4783
4784                 if (!sband->vht_cap.vht_supported)
4785                         continue;
4786
4787                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4788                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4789
4790                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4791                 if (!he_cap)
4792                         continue;
4793
4794                 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4795                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4796
4797                 mask->control[i].he_gi = 0xFF;
4798                 mask->control[i].he_ltf = 0xFF;
4799         }
4800
4801         /* if no rates are given set it back to the defaults */
4802         if (!attrs[attr])
4803                 goto out;
4804
4805         /* The nested attribute uses enum nl80211_band as the index. This maps
4806          * directly to the enum nl80211_band values used in cfg80211.
4807          */
4808         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4809         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4810                 enum nl80211_band band = nla_type(tx_rates);
4811                 int err;
4812
4813                 if (band < 0 || band >= NUM_NL80211_BANDS)
4814                         return -EINVAL;
4815                 sband = rdev->wiphy.bands[band];
4816                 if (sband == NULL)
4817                         return -EINVAL;
4818                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4819                                                   tx_rates,
4820                                                   nl80211_txattr_policy,
4821                                                   info->extack);
4822                 if (err)
4823                         return err;
4824                 if (tb[NL80211_TXRATE_LEGACY]) {
4825                         mask->control[band].legacy = rateset_to_mask(
4826                                 sband,
4827                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4828                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4829                         if ((mask->control[band].legacy == 0) &&
4830                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4831                                 return -EINVAL;
4832                 }
4833                 if (tb[NL80211_TXRATE_HT]) {
4834                         if (!ht_rateset_to_mask(
4835                                         sband,
4836                                         nla_data(tb[NL80211_TXRATE_HT]),
4837                                         nla_len(tb[NL80211_TXRATE_HT]),
4838                                         mask->control[band].ht_mcs))
4839                                 return -EINVAL;
4840                 }
4841
4842                 if (tb[NL80211_TXRATE_VHT]) {
4843                         if (!vht_set_mcs_mask(
4844                                         sband,
4845                                         nla_data(tb[NL80211_TXRATE_VHT]),
4846                                         mask->control[band].vht_mcs))
4847                                 return -EINVAL;
4848                 }
4849
4850                 if (tb[NL80211_TXRATE_GI]) {
4851                         mask->control[band].gi =
4852                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4853                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4854                                 return -EINVAL;
4855                 }
4856                 if (tb[NL80211_TXRATE_HE] &&
4857                     !he_set_mcs_mask(info, wdev, sband,
4858                                      nla_data(tb[NL80211_TXRATE_HE]),
4859                                      mask->control[band].he_mcs))
4860                         return -EINVAL;
4861
4862                 if (tb[NL80211_TXRATE_HE_GI])
4863                         mask->control[band].he_gi =
4864                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4865                 if (tb[NL80211_TXRATE_HE_LTF])
4866                         mask->control[band].he_ltf =
4867                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4868
4869                 if (mask->control[band].legacy == 0) {
4870                         /* don't allow empty legacy rates if HT, VHT or HE
4871                          * are not even supported.
4872                          */
4873                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4874                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4875                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4876                                 return -EINVAL;
4877
4878                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4879                                 if (mask->control[band].ht_mcs[i])
4880                                         goto out;
4881
4882                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4883                                 if (mask->control[band].vht_mcs[i])
4884                                         goto out;
4885
4886                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4887                                 if (mask->control[band].he_mcs[i])
4888                                         goto out;
4889
4890                         /* legacy and mcs rates may not be both empty */
4891                         return -EINVAL;
4892                 }
4893         }
4894
4895 out:
4896         return 0;
4897 }
4898
4899 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4900                                    enum nl80211_band band,
4901                                    struct cfg80211_bitrate_mask *beacon_rate)
4902 {
4903         u32 count_ht, count_vht, count_he, i;
4904         u32 rate = beacon_rate->control[band].legacy;
4905
4906         /* Allow only one rate */
4907         if (hweight32(rate) > 1)
4908                 return -EINVAL;
4909
4910         count_ht = 0;
4911         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4912                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4913                         return -EINVAL;
4914                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4915                         count_ht++;
4916                         if (count_ht > 1)
4917                                 return -EINVAL;
4918                 }
4919                 if (count_ht && rate)
4920                         return -EINVAL;
4921         }
4922
4923         count_vht = 0;
4924         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4925                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4926                         return -EINVAL;
4927                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4928                         count_vht++;
4929                         if (count_vht > 1)
4930                                 return -EINVAL;
4931                 }
4932                 if (count_vht && rate)
4933                         return -EINVAL;
4934         }
4935
4936         count_he = 0;
4937         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4938                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
4939                         return -EINVAL;
4940                 } else if (beacon_rate->control[band].he_mcs[i]) {
4941                         count_he++;
4942                         if (count_he > 1)
4943                                 return -EINVAL;
4944                 }
4945                 if (count_he && rate)
4946                         return -EINVAL;
4947         }
4948
4949         if ((count_ht && count_vht && count_he) ||
4950             (!rate && !count_ht && !count_vht && !count_he))
4951                 return -EINVAL;
4952
4953         if (rate &&
4954             !wiphy_ext_feature_isset(&rdev->wiphy,
4955                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4956                 return -EINVAL;
4957         if (count_ht &&
4958             !wiphy_ext_feature_isset(&rdev->wiphy,
4959                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4960                 return -EINVAL;
4961         if (count_vht &&
4962             !wiphy_ext_feature_isset(&rdev->wiphy,
4963                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4964                 return -EINVAL;
4965         if (count_he &&
4966             !wiphy_ext_feature_isset(&rdev->wiphy,
4967                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
4968                 return -EINVAL;
4969
4970         return 0;
4971 }
4972
4973 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4974                                 struct nlattr *attrs[],
4975                                 struct cfg80211_beacon_data *bcn)
4976 {
4977         bool haveinfo = false;
4978         int err;
4979
4980         memset(bcn, 0, sizeof(*bcn));
4981
4982         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4983                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4984                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4985                 if (!bcn->head_len)
4986                         return -EINVAL;
4987                 haveinfo = true;
4988         }
4989
4990         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4991                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4992                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4993                 haveinfo = true;
4994         }
4995
4996         if (!haveinfo)
4997                 return -EINVAL;
4998
4999         if (attrs[NL80211_ATTR_IE]) {
5000                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5001                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5002         }
5003
5004         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5005                 bcn->proberesp_ies =
5006                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5007                 bcn->proberesp_ies_len =
5008                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5009         }
5010
5011         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5012                 bcn->assocresp_ies =
5013                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5014                 bcn->assocresp_ies_len =
5015                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5016         }
5017
5018         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5019                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5020                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5021         }
5022
5023         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5024                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5025
5026                 err = nla_parse_nested_deprecated(tb,
5027                                                   NL80211_FTM_RESP_ATTR_MAX,
5028                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5029                                                   NULL, NULL);
5030                 if (err)
5031                         return err;
5032
5033                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5034                     wiphy_ext_feature_isset(&rdev->wiphy,
5035                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5036                         bcn->ftm_responder = 1;
5037                 else
5038                         return -EOPNOTSUPP;
5039
5040                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5041                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5042                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5043                 }
5044
5045                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5046                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5047                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5048                 }
5049         } else {
5050                 bcn->ftm_responder = -1;
5051         }
5052
5053         return 0;
5054 }
5055
5056 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5057                                     struct ieee80211_he_obss_pd *he_obss_pd)
5058 {
5059         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5060         int err;
5061
5062         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5063                                he_obss_pd_policy, NULL);
5064         if (err)
5065                 return err;
5066
5067         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5068                 return -EINVAL;
5069
5070         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5071
5072         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5073                 he_obss_pd->min_offset =
5074                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5075         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5076                 he_obss_pd->max_offset =
5077                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5078         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5079                 he_obss_pd->non_srg_max_offset =
5080                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5081
5082         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5083                 return -EINVAL;
5084
5085         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5086                 memcpy(he_obss_pd->bss_color_bitmap,
5087                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5088                        sizeof(he_obss_pd->bss_color_bitmap));
5089
5090         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5091                 memcpy(he_obss_pd->partial_bssid_bitmap,
5092                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5093                        sizeof(he_obss_pd->partial_bssid_bitmap));
5094
5095         he_obss_pd->enable = true;
5096
5097         return 0;
5098 }
5099
5100 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5101                                       struct cfg80211_he_bss_color *he_bss_color)
5102 {
5103         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5104         int err;
5105
5106         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5107                                he_bss_color_policy, NULL);
5108         if (err)
5109                 return err;
5110
5111         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5112                 return -EINVAL;
5113
5114         he_bss_color->color =
5115                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5116         he_bss_color->enabled =
5117                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5118         he_bss_color->partial =
5119                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5120
5121         return 0;
5122 }
5123
5124 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5125                                         struct nlattr *attrs,
5126                                         struct cfg80211_ap_settings *params)
5127 {
5128         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5129         int ret;
5130         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5131
5132         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5133                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5134                 return -EINVAL;
5135
5136         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5137                                NULL, NULL);
5138         if (ret)
5139                 return ret;
5140
5141         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5142             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5143             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5144                 return -EINVAL;
5145
5146         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5147         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5148         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5149         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5150
5151         return 0;
5152 }
5153
5154 static int
5155 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5156                                      struct nlattr *attrs,
5157                                      struct cfg80211_ap_settings *params)
5158 {
5159         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5160         int ret;
5161         struct cfg80211_unsol_bcast_probe_resp *presp =
5162                                         &params->unsol_bcast_probe_resp;
5163
5164         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5165                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5166                 return -EINVAL;
5167
5168         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5169                                attrs, NULL, NULL);
5170         if (ret)
5171                 return ret;
5172
5173         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5174             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5175                 return -EINVAL;
5176
5177         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5178         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5179         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5180         return 0;
5181 }
5182
5183 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5184                                             const u8 *rates)
5185 {
5186         int i;
5187
5188         if (!rates)
5189                 return;
5190
5191         for (i = 0; i < rates[1]; i++) {
5192                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5193                         params->ht_required = true;
5194                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5195                         params->vht_required = true;
5196                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5197                         params->he_required = true;
5198                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5199                         params->sae_h2e_required = true;
5200         }
5201 }
5202
5203 /*
5204  * Since the nl80211 API didn't include, from the beginning, attributes about
5205  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5206  * benefit of drivers that rebuild IEs in the firmware.
5207  */
5208 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5209 {
5210         const struct cfg80211_beacon_data *bcn = &params->beacon;
5211         size_t ies_len = bcn->tail_len;
5212         const u8 *ies = bcn->tail;
5213         const u8 *rates;
5214         const u8 *cap;
5215
5216         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5217         nl80211_check_ap_rate_selectors(params, rates);
5218
5219         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5220         nl80211_check_ap_rate_selectors(params, rates);
5221
5222         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5223         if (cap && cap[1] >= sizeof(*params->ht_cap))
5224                 params->ht_cap = (void *)(cap + 2);
5225         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5226         if (cap && cap[1] >= sizeof(*params->vht_cap))
5227                 params->vht_cap = (void *)(cap + 2);
5228         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5229         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5230                 params->he_cap = (void *)(cap + 3);
5231         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5232         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5233                 params->he_oper = (void *)(cap + 3);
5234 }
5235
5236 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5237                                    struct cfg80211_ap_settings *params)
5238 {
5239         struct wireless_dev *wdev;
5240         bool ret = false;
5241
5242         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5243                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5244                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5245                         continue;
5246
5247                 if (!wdev->preset_chandef.chan)
5248                         continue;
5249
5250                 params->chandef = wdev->preset_chandef;
5251                 ret = true;
5252                 break;
5253         }
5254
5255         return ret;
5256 }
5257
5258 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5259                                     enum nl80211_auth_type auth_type,
5260                                     enum nl80211_commands cmd)
5261 {
5262         if (auth_type > NL80211_AUTHTYPE_MAX)
5263                 return false;
5264
5265         switch (cmd) {
5266         case NL80211_CMD_AUTHENTICATE:
5267                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5268                     auth_type == NL80211_AUTHTYPE_SAE)
5269                         return false;
5270                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5271                                              NL80211_EXT_FEATURE_FILS_STA) &&
5272                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5273                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5274                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5275                         return false;
5276                 return true;
5277         case NL80211_CMD_CONNECT:
5278                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5279                     !wiphy_ext_feature_isset(&rdev->wiphy,
5280                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5281                     auth_type == NL80211_AUTHTYPE_SAE)
5282                         return false;
5283
5284                 /* FILS with SK PFS or PK not supported yet */
5285                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5286                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5287                         return false;
5288                 if (!wiphy_ext_feature_isset(
5289                             &rdev->wiphy,
5290                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5291                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5292                         return false;
5293                 return true;
5294         case NL80211_CMD_START_AP:
5295                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5296                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5297                     auth_type == NL80211_AUTHTYPE_SAE)
5298                         return false;
5299                 /* FILS not supported yet */
5300                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5301                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5302                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5303                         return false;
5304                 return true;
5305         default:
5306                 return false;
5307         }
5308 }
5309
5310 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5311 {
5312         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5313         struct net_device *dev = info->user_ptr[1];
5314         struct wireless_dev *wdev = dev->ieee80211_ptr;
5315         struct cfg80211_ap_settings params;
5316         int err;
5317
5318         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5319             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5320                 return -EOPNOTSUPP;
5321
5322         if (!rdev->ops->start_ap)
5323                 return -EOPNOTSUPP;
5324
5325         if (wdev->beacon_interval)
5326                 return -EALREADY;
5327
5328         memset(&params, 0, sizeof(params));
5329
5330         /* these are required for START_AP */
5331         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5332             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5333             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5334                 return -EINVAL;
5335
5336         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
5337         if (err)
5338                 return err;
5339
5340         params.beacon_interval =
5341                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5342         params.dtim_period =
5343                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5344
5345         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5346                                            params.beacon_interval);
5347         if (err)
5348                 return err;
5349
5350         /*
5351          * In theory, some of these attributes should be required here
5352          * but since they were not used when the command was originally
5353          * added, keep them optional for old user space programs to let
5354          * them continue to work with drivers that do not need the
5355          * additional information -- drivers must check!
5356          */
5357         if (info->attrs[NL80211_ATTR_SSID]) {
5358                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5359                 params.ssid_len =
5360                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5361                 if (params.ssid_len == 0)
5362                         return -EINVAL;
5363         }
5364
5365         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5366                 params.hidden_ssid = nla_get_u32(
5367                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5368
5369         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5370
5371         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5372                 params.auth_type = nla_get_u32(
5373                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5374                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5375                                              NL80211_CMD_START_AP))
5376                         return -EINVAL;
5377         } else
5378                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5379
5380         err = nl80211_crypto_settings(rdev, info, &params.crypto,
5381                                       NL80211_MAX_NR_CIPHER_SUITES);
5382         if (err)
5383                 return err;
5384
5385         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5386                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5387                         return -EOPNOTSUPP;
5388                 params.inactivity_timeout = nla_get_u16(
5389                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5390         }
5391
5392         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5393                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5394                         return -EINVAL;
5395                 params.p2p_ctwindow =
5396                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5397                 if (params.p2p_ctwindow != 0 &&
5398                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5399                         return -EINVAL;
5400         }
5401
5402         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5403                 u8 tmp;
5404
5405                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5406                         return -EINVAL;
5407                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5408                 params.p2p_opp_ps = tmp;
5409                 if (params.p2p_opp_ps != 0 &&
5410                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5411                         return -EINVAL;
5412         }
5413
5414         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5415                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5416                 if (err)
5417                         return err;
5418         } else if (wdev->preset_chandef.chan) {
5419                 params.chandef = wdev->preset_chandef;
5420         } else if (!nl80211_get_ap_channel(rdev, &params))
5421                 return -EINVAL;
5422
5423         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
5424                                            wdev->iftype))
5425                 return -EINVAL;
5426
5427         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5428                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5429                                                     NL80211_ATTR_TX_RATES,
5430                                                     &params.beacon_rate,
5431                                                     dev, false);
5432                 if (err)
5433                         return err;
5434
5435                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5436                                               &params.beacon_rate);
5437                 if (err)
5438                         return err;
5439         }
5440
5441         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5442                 params.smps_mode =
5443                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5444                 switch (params.smps_mode) {
5445                 case NL80211_SMPS_OFF:
5446                         break;
5447                 case NL80211_SMPS_STATIC:
5448                         if (!(rdev->wiphy.features &
5449                               NL80211_FEATURE_STATIC_SMPS))
5450                                 return -EINVAL;
5451                         break;
5452                 case NL80211_SMPS_DYNAMIC:
5453                         if (!(rdev->wiphy.features &
5454                               NL80211_FEATURE_DYNAMIC_SMPS))
5455                                 return -EINVAL;
5456                         break;
5457                 default:
5458                         return -EINVAL;
5459                 }
5460         } else {
5461                 params.smps_mode = NL80211_SMPS_OFF;
5462         }
5463
5464         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5465         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5466                 return -EOPNOTSUPP;
5467
5468         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5469                 params.acl = parse_acl_data(&rdev->wiphy, info);
5470                 if (IS_ERR(params.acl))
5471                         return PTR_ERR(params.acl);
5472         }
5473
5474         params.twt_responder =
5475                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5476
5477         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5478                 err = nl80211_parse_he_obss_pd(
5479                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5480                                         &params.he_obss_pd);
5481                 if (err)
5482                         goto out;
5483         }
5484
5485         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5486                 err = nl80211_parse_he_bss_color(
5487                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5488                                         &params.he_bss_color);
5489                 if (err)
5490                         goto out;
5491         }
5492
5493         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5494                 err = nl80211_parse_fils_discovery(rdev,
5495                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5496                                                    &params);
5497                 if (err)
5498                         goto out;
5499         }
5500
5501         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5502                 err = nl80211_parse_unsol_bcast_probe_resp(
5503                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5504                         &params);
5505                 if (err)
5506                         goto out;
5507         }
5508
5509         nl80211_calculate_ap_params(&params);
5510
5511         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5512                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5513
5514         wdev_lock(wdev);
5515         err = rdev_start_ap(rdev, dev, &params);
5516         if (!err) {
5517                 wdev->preset_chandef = params.chandef;
5518                 wdev->beacon_interval = params.beacon_interval;
5519                 wdev->chandef = params.chandef;
5520                 wdev->ssid_len = params.ssid_len;
5521                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5522
5523                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5524                         wdev->conn_owner_nlportid = info->snd_portid;
5525         }
5526         wdev_unlock(wdev);
5527
5528 out:
5529         kfree(params.acl);
5530
5531         return err;
5532 }
5533
5534 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5535 {
5536         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5537         struct net_device *dev = info->user_ptr[1];
5538         struct wireless_dev *wdev = dev->ieee80211_ptr;
5539         struct cfg80211_beacon_data params;
5540         int err;
5541
5542         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5543             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5544                 return -EOPNOTSUPP;
5545
5546         if (!rdev->ops->change_beacon)
5547                 return -EOPNOTSUPP;
5548
5549         if (!wdev->beacon_interval)
5550                 return -EINVAL;
5551
5552         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5553         if (err)
5554                 return err;
5555
5556         wdev_lock(wdev);
5557         err = rdev_change_beacon(rdev, dev, &params);
5558         wdev_unlock(wdev);
5559
5560         return err;
5561 }
5562
5563 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5564 {
5565         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5566         struct net_device *dev = info->user_ptr[1];
5567
5568         return cfg80211_stop_ap(rdev, dev, false);
5569 }
5570
5571 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5572         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5573         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5574         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5575         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5576         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5577         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5578 };
5579
5580 static int parse_station_flags(struct genl_info *info,
5581                                enum nl80211_iftype iftype,
5582                                struct station_parameters *params)
5583 {
5584         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5585         struct nlattr *nla;
5586         int flag;
5587
5588         /*
5589          * Try parsing the new attribute first so userspace
5590          * can specify both for older kernels.
5591          */
5592         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5593         if (nla) {
5594                 struct nl80211_sta_flag_update *sta_flags;
5595
5596                 sta_flags = nla_data(nla);
5597                 params->sta_flags_mask = sta_flags->mask;
5598                 params->sta_flags_set = sta_flags->set;
5599                 params->sta_flags_set &= params->sta_flags_mask;
5600                 if ((params->sta_flags_mask |
5601                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5602                         return -EINVAL;
5603                 return 0;
5604         }
5605
5606         /* if present, parse the old attribute */
5607
5608         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5609         if (!nla)
5610                 return 0;
5611
5612         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5613                 return -EINVAL;
5614
5615         /*
5616          * Only allow certain flags for interface types so that
5617          * other attributes are silently ignored. Remember that
5618          * this is backward compatibility code with old userspace
5619          * and shouldn't be hit in other cases anyway.
5620          */
5621         switch (iftype) {
5622         case NL80211_IFTYPE_AP:
5623         case NL80211_IFTYPE_AP_VLAN:
5624         case NL80211_IFTYPE_P2P_GO:
5625                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5626                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5627                                          BIT(NL80211_STA_FLAG_WME) |
5628                                          BIT(NL80211_STA_FLAG_MFP);
5629                 break;
5630         case NL80211_IFTYPE_P2P_CLIENT:
5631         case NL80211_IFTYPE_STATION:
5632                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5633                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5634                 break;
5635         case NL80211_IFTYPE_MESH_POINT:
5636                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5637                                          BIT(NL80211_STA_FLAG_MFP) |
5638                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5639                 break;
5640         default:
5641                 return -EINVAL;
5642         }
5643
5644         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5645                 if (flags[flag]) {
5646                         params->sta_flags_set |= (1<<flag);
5647
5648                         /* no longer support new API additions in old API */
5649                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5650                                 return -EINVAL;
5651                 }
5652         }
5653
5654         return 0;
5655 }
5656
5657 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5658 {
5659         struct nlattr *rate;
5660         u32 bitrate;
5661         u16 bitrate_compat;
5662         enum nl80211_rate_info rate_flg;
5663
5664         rate = nla_nest_start_noflag(msg, attr);
5665         if (!rate)
5666                 return false;
5667
5668         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5669         bitrate = cfg80211_calculate_bitrate(info);
5670         /* report 16-bit bitrate only if we can */
5671         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5672         if (bitrate > 0 &&
5673             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5674                 return false;
5675         if (bitrate_compat > 0 &&
5676             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5677                 return false;
5678
5679         switch (info->bw) {
5680         case RATE_INFO_BW_5:
5681                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5682                 break;
5683         case RATE_INFO_BW_10:
5684                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5685                 break;
5686         default:
5687                 WARN_ON(1);
5688                 fallthrough;
5689         case RATE_INFO_BW_20:
5690                 rate_flg = 0;
5691                 break;
5692         case RATE_INFO_BW_40:
5693                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5694                 break;
5695         case RATE_INFO_BW_80:
5696                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5697                 break;
5698         case RATE_INFO_BW_160:
5699                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5700                 break;
5701         case RATE_INFO_BW_HE_RU:
5702                 rate_flg = 0;
5703                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5704         }
5705
5706         if (rate_flg && nla_put_flag(msg, rate_flg))
5707                 return false;
5708
5709         if (info->flags & RATE_INFO_FLAGS_MCS) {
5710                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5711                         return false;
5712                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5713                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5714                         return false;
5715         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5716                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5717                         return false;
5718                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5719                         return false;
5720                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5721                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5722                         return false;
5723         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5724                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5725                         return false;
5726                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5727                         return false;
5728                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5729                         return false;
5730                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5731                         return false;
5732                 if (info->bw == RATE_INFO_BW_HE_RU &&
5733                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5734                                info->he_ru_alloc))
5735                         return false;
5736         }
5737
5738         nla_nest_end(msg, rate);
5739         return true;
5740 }
5741
5742 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5743                                int id)
5744 {
5745         void *attr;
5746         int i = 0;
5747
5748         if (!mask)
5749                 return true;
5750
5751         attr = nla_nest_start_noflag(msg, id);
5752         if (!attr)
5753                 return false;
5754
5755         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5756                 if (!(mask & BIT(i)))
5757                         continue;
5758
5759                 if (nla_put_u8(msg, i, signal[i]))
5760                         return false;
5761         }
5762
5763         nla_nest_end(msg, attr);
5764
5765         return true;
5766 }
5767
5768 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5769                                 u32 seq, int flags,
5770                                 struct cfg80211_registered_device *rdev,
5771                                 struct net_device *dev,
5772                                 const u8 *mac_addr, struct station_info *sinfo)
5773 {
5774         void *hdr;
5775         struct nlattr *sinfoattr, *bss_param;
5776
5777         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5778         if (!hdr) {
5779                 cfg80211_sinfo_release_content(sinfo);
5780                 return -1;
5781         }
5782
5783         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5784             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5785             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5786                 goto nla_put_failure;
5787
5788         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5789         if (!sinfoattr)
5790                 goto nla_put_failure;
5791
5792 #define PUT_SINFO(attr, memb, type) do {                                \
5793         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5794         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5795             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5796                              sinfo->memb))                              \
5797                 goto nla_put_failure;                                   \
5798         } while (0)
5799 #define PUT_SINFO_U64(attr, memb) do {                                  \
5800         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5801             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5802                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5803                 goto nla_put_failure;                                   \
5804         } while (0)
5805
5806         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5807         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5808         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5809
5810         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5811                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5812             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5813                         (u32)sinfo->rx_bytes))
5814                 goto nla_put_failure;
5815
5816         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5817                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5818             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5819                         (u32)sinfo->tx_bytes))
5820                 goto nla_put_failure;
5821
5822         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5823         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5824         PUT_SINFO(LLID, llid, u16);
5825         PUT_SINFO(PLID, plid, u16);
5826         PUT_SINFO(PLINK_STATE, plink_state, u8);
5827         PUT_SINFO_U64(RX_DURATION, rx_duration);
5828         PUT_SINFO_U64(TX_DURATION, tx_duration);
5829
5830         if (wiphy_ext_feature_isset(&rdev->wiphy,
5831                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5832                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5833
5834         switch (rdev->wiphy.signal_type) {
5835         case CFG80211_SIGNAL_TYPE_MBM:
5836                 PUT_SINFO(SIGNAL, signal, u8);
5837                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5838                 break;
5839         default:
5840                 break;
5841         }
5842         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5843                 if (!nl80211_put_signal(msg, sinfo->chains,
5844                                         sinfo->chain_signal,
5845                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5846                         goto nla_put_failure;
5847         }
5848         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5849                 if (!nl80211_put_signal(msg, sinfo->chains,
5850                                         sinfo->chain_signal_avg,
5851                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5852                         goto nla_put_failure;
5853         }
5854         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5855                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5856                                           NL80211_STA_INFO_TX_BITRATE))
5857                         goto nla_put_failure;
5858         }
5859         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5860                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5861                                           NL80211_STA_INFO_RX_BITRATE))
5862                         goto nla_put_failure;
5863         }
5864
5865         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5866         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5867         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5868         PUT_SINFO(TX_FAILED, tx_failed, u32);
5869         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5870         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5871         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5872         PUT_SINFO(LOCAL_PM, local_pm, u32);
5873         PUT_SINFO(PEER_PM, peer_pm, u32);
5874         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5875         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5876         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5877
5878         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5879                 bss_param = nla_nest_start_noflag(msg,
5880                                                   NL80211_STA_INFO_BSS_PARAM);
5881                 if (!bss_param)
5882                         goto nla_put_failure;
5883
5884                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5885                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5886                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5887                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5888                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5889                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5890                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5891                                sinfo->bss_param.dtim_period) ||
5892                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5893                                 sinfo->bss_param.beacon_interval))
5894                         goto nla_put_failure;
5895
5896                 nla_nest_end(msg, bss_param);
5897         }
5898         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5899             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5900                     sizeof(struct nl80211_sta_flag_update),
5901                     &sinfo->sta_flags))
5902                 goto nla_put_failure;
5903
5904         PUT_SINFO_U64(T_OFFSET, t_offset);
5905         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5906         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5907         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5908         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5909         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5910         if (wiphy_ext_feature_isset(&rdev->wiphy,
5911                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5912                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5913                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5914         }
5915
5916 #undef PUT_SINFO
5917 #undef PUT_SINFO_U64
5918
5919         if (sinfo->pertid) {
5920                 struct nlattr *tidsattr;
5921                 int tid;
5922
5923                 tidsattr = nla_nest_start_noflag(msg,
5924                                                  NL80211_STA_INFO_TID_STATS);
5925                 if (!tidsattr)
5926                         goto nla_put_failure;
5927
5928                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5929                         struct cfg80211_tid_stats *tidstats;
5930                         struct nlattr *tidattr;
5931
5932                         tidstats = &sinfo->pertid[tid];
5933
5934                         if (!tidstats->filled)
5935                                 continue;
5936
5937                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5938                         if (!tidattr)
5939                                 goto nla_put_failure;
5940
5941 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5942         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5943             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5944                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5945                 goto nla_put_failure;                                   \
5946         } while (0)
5947
5948                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5949                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5950                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5951                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5952
5953 #undef PUT_TIDVAL_U64
5954                         if ((tidstats->filled &
5955                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5956                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5957                                                    NL80211_TID_STATS_TXQ_STATS))
5958                                 goto nla_put_failure;
5959
5960                         nla_nest_end(msg, tidattr);
5961                 }
5962
5963                 nla_nest_end(msg, tidsattr);
5964         }
5965
5966         nla_nest_end(msg, sinfoattr);
5967
5968         if (sinfo->assoc_req_ies_len &&
5969             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5970                     sinfo->assoc_req_ies))
5971                 goto nla_put_failure;
5972
5973         cfg80211_sinfo_release_content(sinfo);
5974         genlmsg_end(msg, hdr);
5975         return 0;
5976
5977  nla_put_failure:
5978         cfg80211_sinfo_release_content(sinfo);
5979         genlmsg_cancel(msg, hdr);
5980         return -EMSGSIZE;
5981 }
5982
5983 static int nl80211_dump_station(struct sk_buff *skb,
5984                                 struct netlink_callback *cb)
5985 {
5986         struct station_info sinfo;
5987         struct cfg80211_registered_device *rdev;
5988         struct wireless_dev *wdev;
5989         u8 mac_addr[ETH_ALEN];
5990         int sta_idx = cb->args[2];
5991         int err;
5992
5993         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5994         if (err)
5995                 return err;
5996         /* nl80211_prepare_wdev_dump acquired it in the successful case */
5997         __acquire(&rdev->wiphy.mtx);
5998
5999         if (!wdev->netdev) {
6000                 err = -EINVAL;
6001                 goto out_err;
6002         }
6003
6004         if (!rdev->ops->dump_station) {
6005                 err = -EOPNOTSUPP;
6006                 goto out_err;
6007         }
6008
6009         while (1) {
6010                 memset(&sinfo, 0, sizeof(sinfo));
6011                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6012                                         mac_addr, &sinfo);
6013                 if (err == -ENOENT)
6014                         break;
6015                 if (err)
6016                         goto out_err;
6017
6018                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6019                                 NETLINK_CB(cb->skb).portid,
6020                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6021                                 rdev, wdev->netdev, mac_addr,
6022                                 &sinfo) < 0)
6023                         goto out;
6024
6025                 sta_idx++;
6026         }
6027
6028  out:
6029         cb->args[2] = sta_idx;
6030         err = skb->len;
6031  out_err:
6032         wiphy_unlock(&rdev->wiphy);
6033
6034         return err;
6035 }
6036
6037 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6038 {
6039         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6040         struct net_device *dev = info->user_ptr[1];
6041         struct station_info sinfo;
6042         struct sk_buff *msg;
6043         u8 *mac_addr = NULL;
6044         int err;
6045
6046         memset(&sinfo, 0, sizeof(sinfo));
6047
6048         if (!info->attrs[NL80211_ATTR_MAC])
6049                 return -EINVAL;
6050
6051         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6052
6053         if (!rdev->ops->get_station)
6054                 return -EOPNOTSUPP;
6055
6056         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6057         if (err)
6058                 return err;
6059
6060         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6061         if (!msg) {
6062                 cfg80211_sinfo_release_content(&sinfo);
6063                 return -ENOMEM;
6064         }
6065
6066         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6067                                  info->snd_portid, info->snd_seq, 0,
6068                                  rdev, dev, mac_addr, &sinfo) < 0) {
6069                 nlmsg_free(msg);
6070                 return -ENOBUFS;
6071         }
6072
6073         return genlmsg_reply(msg, info);
6074 }
6075
6076 int cfg80211_check_station_change(struct wiphy *wiphy,
6077                                   struct station_parameters *params,
6078                                   enum cfg80211_station_type statype)
6079 {
6080         if (params->listen_interval != -1 &&
6081             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6082                 return -EINVAL;
6083
6084         if (params->support_p2p_ps != -1 &&
6085             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6086                 return -EINVAL;
6087
6088         if (params->aid &&
6089             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6090             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6091                 return -EINVAL;
6092
6093         /* When you run into this, adjust the code below for the new flag */
6094         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6095
6096         switch (statype) {
6097         case CFG80211_STA_MESH_PEER_KERNEL:
6098         case CFG80211_STA_MESH_PEER_USER:
6099                 /*
6100                  * No ignoring the TDLS flag here -- the userspace mesh
6101                  * code doesn't have the bug of including TDLS in the
6102                  * mask everywhere.
6103                  */
6104                 if (params->sta_flags_mask &
6105                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6106                                   BIT(NL80211_STA_FLAG_MFP) |
6107                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6108                         return -EINVAL;
6109                 break;
6110         case CFG80211_STA_TDLS_PEER_SETUP:
6111         case CFG80211_STA_TDLS_PEER_ACTIVE:
6112                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6113                         return -EINVAL;
6114                 /* ignore since it can't change */
6115                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6116                 break;
6117         default:
6118                 /* disallow mesh-specific things */
6119                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6120                         return -EINVAL;
6121                 if (params->local_pm)
6122                         return -EINVAL;
6123                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6124                         return -EINVAL;
6125         }
6126
6127         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6128             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6129                 /* TDLS can't be set, ... */
6130                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6131                         return -EINVAL;
6132                 /*
6133                  * ... but don't bother the driver with it. This works around
6134                  * a hostapd/wpa_supplicant issue -- it always includes the
6135                  * TLDS_PEER flag in the mask even for AP mode.
6136                  */
6137                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6138         }
6139
6140         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6141             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6142                 /* reject other things that can't change */
6143                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6144                         return -EINVAL;
6145                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6146                         return -EINVAL;
6147                 if (params->supported_rates)
6148                         return -EINVAL;
6149                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
6150                     params->he_capa)
6151                         return -EINVAL;
6152         }
6153
6154         if (statype != CFG80211_STA_AP_CLIENT &&
6155             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6156                 if (params->vlan)
6157                         return -EINVAL;
6158         }
6159
6160         switch (statype) {
6161         case CFG80211_STA_AP_MLME_CLIENT:
6162                 /* Use this only for authorizing/unauthorizing a station */
6163                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6164                         return -EOPNOTSUPP;
6165                 break;
6166         case CFG80211_STA_AP_CLIENT:
6167         case CFG80211_STA_AP_CLIENT_UNASSOC:
6168                 /* accept only the listed bits */
6169                 if (params->sta_flags_mask &
6170                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6171                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6172                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6173                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6174                                   BIT(NL80211_STA_FLAG_WME) |
6175                                   BIT(NL80211_STA_FLAG_MFP)))
6176                         return -EINVAL;
6177
6178                 /* but authenticated/associated only if driver handles it */
6179                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6180                     params->sta_flags_mask &
6181                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6182                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6183                         return -EINVAL;
6184                 break;
6185         case CFG80211_STA_IBSS:
6186         case CFG80211_STA_AP_STA:
6187                 /* reject any changes other than AUTHORIZED */
6188                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6189                         return -EINVAL;
6190                 break;
6191         case CFG80211_STA_TDLS_PEER_SETUP:
6192                 /* reject any changes other than AUTHORIZED or WME */
6193                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6194                                                BIT(NL80211_STA_FLAG_WME)))
6195                         return -EINVAL;
6196                 /* force (at least) rates when authorizing */
6197                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6198                     !params->supported_rates)
6199                         return -EINVAL;
6200                 break;
6201         case CFG80211_STA_TDLS_PEER_ACTIVE:
6202                 /* reject any changes */
6203                 return -EINVAL;
6204         case CFG80211_STA_MESH_PEER_KERNEL:
6205                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6206                         return -EINVAL;
6207                 break;
6208         case CFG80211_STA_MESH_PEER_USER:
6209                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6210                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6211                         return -EINVAL;
6212                 break;
6213         }
6214
6215         /*
6216          * Older kernel versions ignored this attribute entirely, so don't
6217          * reject attempts to update it but mark it as unused instead so the
6218          * driver won't look at the data.
6219          */
6220         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6221             statype != CFG80211_STA_TDLS_PEER_SETUP)
6222                 params->opmode_notif_used = false;
6223
6224         return 0;
6225 }
6226 EXPORT_SYMBOL(cfg80211_check_station_change);
6227
6228 /*
6229  * Get vlan interface making sure it is running and on the right wiphy.
6230  */
6231 static struct net_device *get_vlan(struct genl_info *info,
6232                                    struct cfg80211_registered_device *rdev)
6233 {
6234         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6235         struct net_device *v;
6236         int ret;
6237
6238         if (!vlanattr)
6239                 return NULL;
6240
6241         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6242         if (!v)
6243                 return ERR_PTR(-ENODEV);
6244
6245         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6246                 ret = -EINVAL;
6247                 goto error;
6248         }
6249
6250         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6251             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6252             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6253                 ret = -EINVAL;
6254                 goto error;
6255         }
6256
6257         if (!netif_running(v)) {
6258                 ret = -ENETDOWN;
6259                 goto error;
6260         }
6261
6262         return v;
6263  error:
6264         dev_put(v);
6265         return ERR_PTR(ret);
6266 }
6267
6268 static const struct nla_policy
6269 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6270         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6271         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6272 };
6273
6274 static int nl80211_parse_sta_wme(struct genl_info *info,
6275                                  struct station_parameters *params)
6276 {
6277         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6278         struct nlattr *nla;
6279         int err;
6280
6281         /* parse WME attributes if present */
6282         if (!info->attrs[NL80211_ATTR_STA_WME])
6283                 return 0;
6284
6285         nla = info->attrs[NL80211_ATTR_STA_WME];
6286         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6287                                           nl80211_sta_wme_policy,
6288                                           info->extack);
6289         if (err)
6290                 return err;
6291
6292         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6293                 params->uapsd_queues = nla_get_u8(
6294                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6295         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6296                 return -EINVAL;
6297
6298         if (tb[NL80211_STA_WME_MAX_SP])
6299                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6300
6301         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6302                 return -EINVAL;
6303
6304         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6305
6306         return 0;
6307 }
6308
6309 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6310                                       struct station_parameters *params)
6311 {
6312         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6313                 params->supported_channels =
6314                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6315                 params->supported_channels_len =
6316                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6317                 /*
6318                  * Need to include at least one (first channel, number of
6319                  * channels) tuple for each subband (checked in policy),
6320                  * and must have proper tuples for the rest of the data as well.
6321                  */
6322                 if (params->supported_channels_len % 2)
6323                         return -EINVAL;
6324         }
6325
6326         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6327                 params->supported_oper_classes =
6328                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6329                 params->supported_oper_classes_len =
6330                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6331         }
6332         return 0;
6333 }
6334
6335 static int nl80211_set_station_tdls(struct genl_info *info,
6336                                     struct station_parameters *params)
6337 {
6338         int err;
6339         /* Dummy STA entry gets updated once the peer capabilities are known */
6340         if (info->attrs[NL80211_ATTR_PEER_AID])
6341                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6342         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6343                 params->ht_capa =
6344                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6345         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6346                 params->vht_capa =
6347                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6348         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6349                 params->he_capa =
6350                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6351                 params->he_capa_len =
6352                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6353         }
6354
6355         err = nl80211_parse_sta_channel_info(info, params);
6356         if (err)
6357                 return err;
6358
6359         return nl80211_parse_sta_wme(info, params);
6360 }
6361
6362 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6363                                              struct station_parameters *params)
6364 {
6365         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6366         int idx;
6367
6368         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6369                 if (!rdev->ops->set_tx_power ||
6370                     !wiphy_ext_feature_isset(&rdev->wiphy,
6371                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6372                         return -EOPNOTSUPP;
6373
6374                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6375                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6376
6377                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6378                         idx = NL80211_ATTR_STA_TX_POWER;
6379
6380                         if (info->attrs[idx])
6381                                 params->txpwr.power =
6382                                         nla_get_s16(info->attrs[idx]);
6383                         else
6384                                 return -EINVAL;
6385                 }
6386                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6387         }
6388
6389         return 0;
6390 }
6391
6392 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6393 {
6394         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6395         struct net_device *dev = info->user_ptr[1];
6396         struct station_parameters params;
6397         u8 *mac_addr;
6398         int err;
6399
6400         memset(&params, 0, sizeof(params));
6401
6402         if (!rdev->ops->change_station)
6403                 return -EOPNOTSUPP;
6404
6405         /*
6406          * AID and listen_interval properties can be set only for unassociated
6407          * station. Include these parameters here and will check them in
6408          * cfg80211_check_station_change().
6409          */
6410         if (info->attrs[NL80211_ATTR_STA_AID])
6411                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6412
6413         if (info->attrs[NL80211_ATTR_VLAN_ID])
6414                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6415
6416         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6417                 params.listen_interval =
6418                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6419         else
6420                 params.listen_interval = -1;
6421
6422         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6423                 params.support_p2p_ps =
6424                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6425         else
6426                 params.support_p2p_ps = -1;
6427
6428         if (!info->attrs[NL80211_ATTR_MAC])
6429                 return -EINVAL;
6430
6431         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6432
6433         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6434                 params.supported_rates =
6435                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6436                 params.supported_rates_len =
6437                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6438         }
6439
6440         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6441                 params.capability =
6442                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6443                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6444         }
6445
6446         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6447                 params.ext_capab =
6448                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6449                 params.ext_capab_len =
6450                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6451         }
6452
6453         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6454                 return -EINVAL;
6455
6456         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6457                 params.plink_action =
6458                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6459
6460         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6461                 params.plink_state =
6462                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6463                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6464                         params.peer_aid = nla_get_u16(
6465                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6466                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6467         }
6468
6469         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6470                 params.local_pm = nla_get_u32(
6471                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6472
6473         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6474                 params.opmode_notif_used = true;
6475                 params.opmode_notif =
6476                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6477         }
6478
6479         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6480                 params.he_6ghz_capa =
6481                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6482
6483         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6484                 params.airtime_weight =
6485                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6486
6487         if (params.airtime_weight &&
6488             !wiphy_ext_feature_isset(&rdev->wiphy,
6489                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6490                 return -EOPNOTSUPP;
6491
6492         err = nl80211_parse_sta_txpower_setting(info, &params);
6493         if (err)
6494                 return err;
6495
6496         /* Include parameters for TDLS peer (will check later) */
6497         err = nl80211_set_station_tdls(info, &params);
6498         if (err)
6499                 return err;
6500
6501         params.vlan = get_vlan(info, rdev);
6502         if (IS_ERR(params.vlan))
6503                 return PTR_ERR(params.vlan);
6504
6505         switch (dev->ieee80211_ptr->iftype) {
6506         case NL80211_IFTYPE_AP:
6507         case NL80211_IFTYPE_AP_VLAN:
6508         case NL80211_IFTYPE_P2P_GO:
6509         case NL80211_IFTYPE_P2P_CLIENT:
6510         case NL80211_IFTYPE_STATION:
6511         case NL80211_IFTYPE_ADHOC:
6512         case NL80211_IFTYPE_MESH_POINT:
6513                 break;
6514         default:
6515                 err = -EOPNOTSUPP;
6516                 goto out_put_vlan;
6517         }
6518
6519         /* driver will call cfg80211_check_station_change() */
6520         err = rdev_change_station(rdev, dev, mac_addr, &params);
6521
6522  out_put_vlan:
6523         if (params.vlan)
6524                 dev_put(params.vlan);
6525
6526         return err;
6527 }
6528
6529 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6530 {
6531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6532         int err;
6533         struct net_device *dev = info->user_ptr[1];
6534         struct station_parameters params;
6535         u8 *mac_addr = NULL;
6536         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6537                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6538
6539         memset(&params, 0, sizeof(params));
6540
6541         if (!rdev->ops->add_station)
6542                 return -EOPNOTSUPP;
6543
6544         if (!info->attrs[NL80211_ATTR_MAC])
6545                 return -EINVAL;
6546
6547         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6548                 return -EINVAL;
6549
6550         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6551                 return -EINVAL;
6552
6553         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6554             !info->attrs[NL80211_ATTR_PEER_AID])
6555                 return -EINVAL;
6556
6557         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6558         params.supported_rates =
6559                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6560         params.supported_rates_len =
6561                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6562         params.listen_interval =
6563                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6564
6565         if (info->attrs[NL80211_ATTR_VLAN_ID])
6566                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6567
6568         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6569                 params.support_p2p_ps =
6570                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6571         } else {
6572                 /*
6573                  * if not specified, assume it's supported for P2P GO interface,
6574                  * and is NOT supported for AP interface
6575                  */
6576                 params.support_p2p_ps =
6577                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6578         }
6579
6580         if (info->attrs[NL80211_ATTR_PEER_AID])
6581                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6582         else
6583                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6584
6585         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6586                 params.capability =
6587                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6588                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6589         }
6590
6591         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6592                 params.ext_capab =
6593                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6594                 params.ext_capab_len =
6595                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6596         }
6597
6598         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6599                 params.ht_capa =
6600                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6601
6602         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6603                 params.vht_capa =
6604                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6605
6606         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6607                 params.he_capa =
6608                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6609                 params.he_capa_len =
6610                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6611         }
6612
6613         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6614                 params.he_6ghz_capa =
6615                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6616
6617         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6618                 params.opmode_notif_used = true;
6619                 params.opmode_notif =
6620                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6621         }
6622
6623         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6624                 params.plink_action =
6625                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6626
6627         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6628                 params.airtime_weight =
6629                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6630
6631         if (params.airtime_weight &&
6632             !wiphy_ext_feature_isset(&rdev->wiphy,
6633                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6634                 return -EOPNOTSUPP;
6635
6636         err = nl80211_parse_sta_txpower_setting(info, &params);
6637         if (err)
6638                 return err;
6639
6640         err = nl80211_parse_sta_channel_info(info, &params);
6641         if (err)
6642                 return err;
6643
6644         err = nl80211_parse_sta_wme(info, &params);
6645         if (err)
6646                 return err;
6647
6648         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6649                 return -EINVAL;
6650
6651         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6652          * as userspace might just pass through the capabilities from the IEs
6653          * directly, rather than enforcing this restriction and returning an
6654          * error in this case.
6655          */
6656         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6657                 params.ht_capa = NULL;
6658                 params.vht_capa = NULL;
6659
6660                 /* HE requires WME */
6661                 if (params.he_capa_len || params.he_6ghz_capa)
6662                         return -EINVAL;
6663         }
6664
6665         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6666         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6667                 return -EINVAL;
6668
6669         /* When you run into this, adjust the code below for the new flag */
6670         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6671
6672         switch (dev->ieee80211_ptr->iftype) {
6673         case NL80211_IFTYPE_AP:
6674         case NL80211_IFTYPE_AP_VLAN:
6675         case NL80211_IFTYPE_P2P_GO:
6676                 /* ignore WME attributes if iface/sta is not capable */
6677                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6678                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6679                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6680
6681                 /* TDLS peers cannot be added */
6682                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6683                     info->attrs[NL80211_ATTR_PEER_AID])
6684                         return -EINVAL;
6685                 /* but don't bother the driver with it */
6686                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6687
6688                 /* allow authenticated/associated only if driver handles it */
6689                 if (!(rdev->wiphy.features &
6690                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6691                     params.sta_flags_mask & auth_assoc)
6692                         return -EINVAL;
6693
6694                 /* Older userspace, or userspace wanting to be compatible with
6695                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6696                  * and assoc flags in the mask, but assumes the station will be
6697                  * added as associated anyway since this was the required driver
6698                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6699                  * introduced.
6700                  * In order to not bother drivers with this quirk in the API
6701                  * set the flags in both the mask and set for new stations in
6702                  * this case.
6703                  */
6704                 if (!(params.sta_flags_mask & auth_assoc)) {
6705                         params.sta_flags_mask |= auth_assoc;
6706                         params.sta_flags_set |= auth_assoc;
6707                 }
6708
6709                 /* must be last in here for error handling */
6710                 params.vlan = get_vlan(info, rdev);
6711                 if (IS_ERR(params.vlan))
6712                         return PTR_ERR(params.vlan);
6713                 break;
6714         case NL80211_IFTYPE_MESH_POINT:
6715                 /* ignore uAPSD data */
6716                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6717
6718                 /* associated is disallowed */
6719                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6720                         return -EINVAL;
6721                 /* TDLS peers cannot be added */
6722                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6723                     info->attrs[NL80211_ATTR_PEER_AID])
6724                         return -EINVAL;
6725                 break;
6726         case NL80211_IFTYPE_STATION:
6727         case NL80211_IFTYPE_P2P_CLIENT:
6728                 /* ignore uAPSD data */
6729                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6730
6731                 /* these are disallowed */
6732                 if (params.sta_flags_mask &
6733                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6734                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6735                         return -EINVAL;
6736                 /* Only TDLS peers can be added */
6737                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6738                         return -EINVAL;
6739                 /* Can only add if TDLS ... */
6740                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6741                         return -EOPNOTSUPP;
6742                 /* ... with external setup is supported */
6743                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6744                         return -EOPNOTSUPP;
6745                 /*
6746                  * Older wpa_supplicant versions always mark the TDLS peer
6747                  * as authorized, but it shouldn't yet be.
6748                  */
6749                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6750                 break;
6751         default:
6752                 return -EOPNOTSUPP;
6753         }
6754
6755         /* be aware of params.vlan when changing code here */
6756
6757         err = rdev_add_station(rdev, dev, mac_addr, &params);
6758
6759         if (params.vlan)
6760                 dev_put(params.vlan);
6761         return err;
6762 }
6763
6764 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6765 {
6766         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6767         struct net_device *dev = info->user_ptr[1];
6768         struct station_del_parameters params;
6769
6770         memset(&params, 0, sizeof(params));
6771
6772         if (info->attrs[NL80211_ATTR_MAC])
6773                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6774
6775         switch (dev->ieee80211_ptr->iftype) {
6776         case NL80211_IFTYPE_AP:
6777         case NL80211_IFTYPE_AP_VLAN:
6778         case NL80211_IFTYPE_MESH_POINT:
6779         case NL80211_IFTYPE_P2P_GO:
6780                 /* always accept these */
6781                 break;
6782         case NL80211_IFTYPE_ADHOC:
6783                 /* conditionally accept */
6784                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6785                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6786                         break;
6787                 return -EINVAL;
6788         default:
6789                 return -EINVAL;
6790         }
6791
6792         if (!rdev->ops->del_station)
6793                 return -EOPNOTSUPP;
6794
6795         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6796                 params.subtype =
6797                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6798                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6799                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6800                         return -EINVAL;
6801         } else {
6802                 /* Default to Deauthentication frame */
6803                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6804         }
6805
6806         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6807                 params.reason_code =
6808                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6809                 if (params.reason_code == 0)
6810                         return -EINVAL; /* 0 is reserved */
6811         } else {
6812                 /* Default to reason code 2 */
6813                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6814         }
6815
6816         return rdev_del_station(rdev, dev, &params);
6817 }
6818
6819 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6820                                 int flags, struct net_device *dev,
6821                                 u8 *dst, u8 *next_hop,
6822                                 struct mpath_info *pinfo)
6823 {
6824         void *hdr;
6825         struct nlattr *pinfoattr;
6826
6827         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6828         if (!hdr)
6829                 return -1;
6830
6831         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6832             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6833             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6834             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6835                 goto nla_put_failure;
6836
6837         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6838         if (!pinfoattr)
6839                 goto nla_put_failure;
6840         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6841             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6842                         pinfo->frame_qlen))
6843                 goto nla_put_failure;
6844         if (((pinfo->filled & MPATH_INFO_SN) &&
6845              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6846             ((pinfo->filled & MPATH_INFO_METRIC) &&
6847              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6848                          pinfo->metric)) ||
6849             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6850              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6851                          pinfo->exptime)) ||
6852             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6853              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6854                         pinfo->flags)) ||
6855             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6856              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6857                          pinfo->discovery_timeout)) ||
6858             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6859              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6860                         pinfo->discovery_retries)) ||
6861             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6862              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6863                         pinfo->hop_count)) ||
6864             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6865              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6866                          pinfo->path_change_count)))
6867                 goto nla_put_failure;
6868
6869         nla_nest_end(msg, pinfoattr);
6870
6871         genlmsg_end(msg, hdr);
6872         return 0;
6873
6874  nla_put_failure:
6875         genlmsg_cancel(msg, hdr);
6876         return -EMSGSIZE;
6877 }
6878
6879 static int nl80211_dump_mpath(struct sk_buff *skb,
6880                               struct netlink_callback *cb)
6881 {
6882         struct mpath_info pinfo;
6883         struct cfg80211_registered_device *rdev;
6884         struct wireless_dev *wdev;
6885         u8 dst[ETH_ALEN];
6886         u8 next_hop[ETH_ALEN];
6887         int path_idx = cb->args[2];
6888         int err;
6889
6890         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6891         if (err)
6892                 return err;
6893         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6894         __acquire(&rdev->wiphy.mtx);
6895
6896         if (!rdev->ops->dump_mpath) {
6897                 err = -EOPNOTSUPP;
6898                 goto out_err;
6899         }
6900
6901         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6902                 err = -EOPNOTSUPP;
6903                 goto out_err;
6904         }
6905
6906         while (1) {
6907                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6908                                       next_hop, &pinfo);
6909                 if (err == -ENOENT)
6910                         break;
6911                 if (err)
6912                         goto out_err;
6913
6914                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6915                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6916                                        wdev->netdev, dst, next_hop,
6917                                        &pinfo) < 0)
6918                         goto out;
6919
6920                 path_idx++;
6921         }
6922
6923  out:
6924         cb->args[2] = path_idx;
6925         err = skb->len;
6926  out_err:
6927         wiphy_unlock(&rdev->wiphy);
6928         return err;
6929 }
6930
6931 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6932 {
6933         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6934         int err;
6935         struct net_device *dev = info->user_ptr[1];
6936         struct mpath_info pinfo;
6937         struct sk_buff *msg;
6938         u8 *dst = NULL;
6939         u8 next_hop[ETH_ALEN];
6940
6941         memset(&pinfo, 0, sizeof(pinfo));
6942
6943         if (!info->attrs[NL80211_ATTR_MAC])
6944                 return -EINVAL;
6945
6946         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6947
6948         if (!rdev->ops->get_mpath)
6949                 return -EOPNOTSUPP;
6950
6951         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6952                 return -EOPNOTSUPP;
6953
6954         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6955         if (err)
6956                 return err;
6957
6958         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6959         if (!msg)
6960                 return -ENOMEM;
6961
6962         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6963                                  dev, dst, next_hop, &pinfo) < 0) {
6964                 nlmsg_free(msg);
6965                 return -ENOBUFS;
6966         }
6967
6968         return genlmsg_reply(msg, info);
6969 }
6970
6971 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6972 {
6973         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6974         struct net_device *dev = info->user_ptr[1];
6975         u8 *dst = NULL;
6976         u8 *next_hop = NULL;
6977
6978         if (!info->attrs[NL80211_ATTR_MAC])
6979                 return -EINVAL;
6980
6981         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6982                 return -EINVAL;
6983
6984         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6985         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6986
6987         if (!rdev->ops->change_mpath)
6988                 return -EOPNOTSUPP;
6989
6990         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6991                 return -EOPNOTSUPP;
6992
6993         return rdev_change_mpath(rdev, dev, dst, next_hop);
6994 }
6995
6996 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6997 {
6998         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6999         struct net_device *dev = info->user_ptr[1];
7000         u8 *dst = NULL;
7001         u8 *next_hop = NULL;
7002
7003         if (!info->attrs[NL80211_ATTR_MAC])
7004                 return -EINVAL;
7005
7006         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7007                 return -EINVAL;
7008
7009         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7010         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7011
7012         if (!rdev->ops->add_mpath)
7013                 return -EOPNOTSUPP;
7014
7015         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7016                 return -EOPNOTSUPP;
7017
7018         return rdev_add_mpath(rdev, dev, dst, next_hop);
7019 }
7020
7021 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7022 {
7023         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7024         struct net_device *dev = info->user_ptr[1];
7025         u8 *dst = NULL;
7026
7027         if (info->attrs[NL80211_ATTR_MAC])
7028                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7029
7030         if (!rdev->ops->del_mpath)
7031                 return -EOPNOTSUPP;
7032
7033         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7034                 return -EOPNOTSUPP;
7035
7036         return rdev_del_mpath(rdev, dev, dst);
7037 }
7038
7039 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7040 {
7041         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7042         int err;
7043         struct net_device *dev = info->user_ptr[1];
7044         struct mpath_info pinfo;
7045         struct sk_buff *msg;
7046         u8 *dst = NULL;
7047         u8 mpp[ETH_ALEN];
7048
7049         memset(&pinfo, 0, sizeof(pinfo));
7050
7051         if (!info->attrs[NL80211_ATTR_MAC])
7052                 return -EINVAL;
7053
7054         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7055
7056         if (!rdev->ops->get_mpp)
7057                 return -EOPNOTSUPP;
7058
7059         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7060                 return -EOPNOTSUPP;
7061
7062         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7063         if (err)
7064                 return err;
7065
7066         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7067         if (!msg)
7068                 return -ENOMEM;
7069
7070         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7071                                dev, dst, mpp, &pinfo) < 0) {
7072                 nlmsg_free(msg);
7073                 return -ENOBUFS;
7074         }
7075
7076         return genlmsg_reply(msg, info);
7077 }
7078
7079 static int nl80211_dump_mpp(struct sk_buff *skb,
7080                             struct netlink_callback *cb)
7081 {
7082         struct mpath_info pinfo;
7083         struct cfg80211_registered_device *rdev;
7084         struct wireless_dev *wdev;
7085         u8 dst[ETH_ALEN];
7086         u8 mpp[ETH_ALEN];
7087         int path_idx = cb->args[2];
7088         int err;
7089
7090         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
7091         if (err)
7092                 return err;
7093         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7094         __acquire(&rdev->wiphy.mtx);
7095
7096         if (!rdev->ops->dump_mpp) {
7097                 err = -EOPNOTSUPP;
7098                 goto out_err;
7099         }
7100
7101         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7102                 err = -EOPNOTSUPP;
7103                 goto out_err;
7104         }
7105
7106         while (1) {
7107                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7108                                     mpp, &pinfo);
7109                 if (err == -ENOENT)
7110                         break;
7111                 if (err)
7112                         goto out_err;
7113
7114                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7115                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7116                                        wdev->netdev, dst, mpp,
7117                                        &pinfo) < 0)
7118                         goto out;
7119
7120                 path_idx++;
7121         }
7122
7123  out:
7124         cb->args[2] = path_idx;
7125         err = skb->len;
7126  out_err:
7127         wiphy_unlock(&rdev->wiphy);
7128         return err;
7129 }
7130
7131 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7132 {
7133         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7134         struct net_device *dev = info->user_ptr[1];
7135         struct wireless_dev *wdev = dev->ieee80211_ptr;
7136         struct bss_parameters params;
7137         int err;
7138
7139         memset(&params, 0, sizeof(params));
7140         /* default to not changing parameters */
7141         params.use_cts_prot = -1;
7142         params.use_short_preamble = -1;
7143         params.use_short_slot_time = -1;
7144         params.ap_isolate = -1;
7145         params.ht_opmode = -1;
7146         params.p2p_ctwindow = -1;
7147         params.p2p_opp_ps = -1;
7148
7149         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7150                 params.use_cts_prot =
7151                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7152         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7153                 params.use_short_preamble =
7154                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7155         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7156                 params.use_short_slot_time =
7157                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7158         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7159                 params.basic_rates =
7160                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7161                 params.basic_rates_len =
7162                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7163         }
7164         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7165                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7166         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7167                 params.ht_opmode =
7168                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7169
7170         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7171                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7172                         return -EINVAL;
7173                 params.p2p_ctwindow =
7174                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7175                 if (params.p2p_ctwindow != 0 &&
7176                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7177                         return -EINVAL;
7178         }
7179
7180         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7181                 u8 tmp;
7182
7183                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7184                         return -EINVAL;
7185                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7186                 params.p2p_opp_ps = tmp;
7187                 if (params.p2p_opp_ps &&
7188                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7189                         return -EINVAL;
7190         }
7191
7192         if (!rdev->ops->change_bss)
7193                 return -EOPNOTSUPP;
7194
7195         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7196             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7197                 return -EOPNOTSUPP;
7198
7199         wdev_lock(wdev);
7200         err = rdev_change_bss(rdev, dev, &params);
7201         wdev_unlock(wdev);
7202
7203         return err;
7204 }
7205
7206 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7207 {
7208         char *data = NULL;
7209         bool is_indoor;
7210         enum nl80211_user_reg_hint_type user_reg_hint_type;
7211         u32 owner_nlportid;
7212
7213         /*
7214          * You should only get this when cfg80211 hasn't yet initialized
7215          * completely when built-in to the kernel right between the time
7216          * window between nl80211_init() and regulatory_init(), if that is
7217          * even possible.
7218          */
7219         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7220                 return -EINPROGRESS;
7221
7222         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7223                 user_reg_hint_type =
7224                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7225         else
7226                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7227
7228         switch (user_reg_hint_type) {
7229         case NL80211_USER_REG_HINT_USER:
7230         case NL80211_USER_REG_HINT_CELL_BASE:
7231                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7232                         return -EINVAL;
7233
7234                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7235                 return regulatory_hint_user(data, user_reg_hint_type);
7236         case NL80211_USER_REG_HINT_INDOOR:
7237                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7238                         owner_nlportid = info->snd_portid;
7239                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7240                 } else {
7241                         owner_nlportid = 0;
7242                         is_indoor = true;
7243                 }
7244
7245                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7246         default:
7247                 return -EINVAL;
7248         }
7249 }
7250
7251 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7252 {
7253         return reg_reload_regdb();
7254 }
7255
7256 static int nl80211_get_mesh_config(struct sk_buff *skb,
7257                                    struct genl_info *info)
7258 {
7259         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7260         struct net_device *dev = info->user_ptr[1];
7261         struct wireless_dev *wdev = dev->ieee80211_ptr;
7262         struct mesh_config cur_params;
7263         int err = 0;
7264         void *hdr;
7265         struct nlattr *pinfoattr;
7266         struct sk_buff *msg;
7267
7268         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7269                 return -EOPNOTSUPP;
7270
7271         if (!rdev->ops->get_mesh_config)
7272                 return -EOPNOTSUPP;
7273
7274         wdev_lock(wdev);
7275         /* If not connected, get default parameters */
7276         if (!wdev->mesh_id_len)
7277                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7278         else
7279                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7280         wdev_unlock(wdev);
7281
7282         if (err)
7283                 return err;
7284
7285         /* Draw up a netlink message to send back */
7286         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7287         if (!msg)
7288                 return -ENOMEM;
7289         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7290                              NL80211_CMD_GET_MESH_CONFIG);
7291         if (!hdr)
7292                 goto out;
7293         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7294         if (!pinfoattr)
7295                 goto nla_put_failure;
7296         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7297             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7298                         cur_params.dot11MeshRetryTimeout) ||
7299             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7300                         cur_params.dot11MeshConfirmTimeout) ||
7301             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7302                         cur_params.dot11MeshHoldingTimeout) ||
7303             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7304                         cur_params.dot11MeshMaxPeerLinks) ||
7305             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7306                        cur_params.dot11MeshMaxRetries) ||
7307             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7308                        cur_params.dot11MeshTTL) ||
7309             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7310                        cur_params.element_ttl) ||
7311             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7312                        cur_params.auto_open_plinks) ||
7313             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7314                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7315             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7316                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7317             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7318                         cur_params.path_refresh_time) ||
7319             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7320                         cur_params.min_discovery_timeout) ||
7321             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7322                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7323             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7324                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7325             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7326                         cur_params.dot11MeshHWMPperrMinInterval) ||
7327             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7328                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7329             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7330                        cur_params.dot11MeshHWMPRootMode) ||
7331             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7332                         cur_params.dot11MeshHWMPRannInterval) ||
7333             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7334                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7335             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7336                        cur_params.dot11MeshForwarding) ||
7337             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7338                         cur_params.rssi_threshold) ||
7339             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7340                         cur_params.ht_opmode) ||
7341             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7342                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7343             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7344                         cur_params.dot11MeshHWMProotInterval) ||
7345             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7346                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7347             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7348                         cur_params.power_mode) ||
7349             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7350                         cur_params.dot11MeshAwakeWindowDuration) ||
7351             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7352                         cur_params.plink_timeout) ||
7353             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7354                        cur_params.dot11MeshConnectedToMeshGate) ||
7355             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7356                        cur_params.dot11MeshNolearn) ||
7357             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7358                        cur_params.dot11MeshConnectedToAuthServer))
7359                 goto nla_put_failure;
7360         nla_nest_end(msg, pinfoattr);
7361         genlmsg_end(msg, hdr);
7362         return genlmsg_reply(msg, info);
7363
7364  nla_put_failure:
7365  out:
7366         nlmsg_free(msg);
7367         return -ENOBUFS;
7368 }
7369
7370 static const struct nla_policy
7371 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7372         [NL80211_MESHCONF_RETRY_TIMEOUT] =
7373                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7374         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7375                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7376         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7377                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7378         [NL80211_MESHCONF_MAX_PEER_LINKS] =
7379                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7380         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7381         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7382         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7383         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7384         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7385                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7386         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7387         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7388         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7389         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7390         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7391                 NLA_POLICY_MIN(NLA_U16, 1),
7392         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7393                 NLA_POLICY_MIN(NLA_U16, 1),
7394         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7395                 NLA_POLICY_MIN(NLA_U16, 1),
7396         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7397         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7398                 NLA_POLICY_MIN(NLA_U16, 1),
7399         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7400         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7401         [NL80211_MESHCONF_RSSI_THRESHOLD] =
7402                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7403         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7404         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7405         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7406                 NLA_POLICY_MIN(NLA_U16, 1),
7407         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7408                 NLA_POLICY_MIN(NLA_U16, 1),
7409         [NL80211_MESHCONF_POWER_MODE] =
7410                 NLA_POLICY_RANGE(NLA_U32,
7411                                  NL80211_MESH_POWER_ACTIVE,
7412                                  NL80211_MESH_POWER_MAX),
7413         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7414         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7415         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7416         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7417         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7418 };
7419
7420 static const struct nla_policy
7421         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7422         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7423         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7424         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7425         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7426         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7427         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7428         [NL80211_MESH_SETUP_IE] =
7429                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7430                                        IEEE80211_MAX_DATA_LEN),
7431         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7432 };
7433
7434 static int nl80211_parse_mesh_config(struct genl_info *info,
7435                                      struct mesh_config *cfg,
7436                                      u32 *mask_out)
7437 {
7438         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7439         u32 mask = 0;
7440         u16 ht_opmode;
7441
7442 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
7443 do {                                                                    \
7444         if (tb[attr]) {                                                 \
7445                 cfg->param = fn(tb[attr]);                              \
7446                 mask |= BIT((attr) - 1);                                \
7447         }                                                               \
7448 } while (0)
7449
7450         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7451                 return -EINVAL;
7452         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7453                 return -EINVAL;
7454
7455         /* This makes sure that there aren't more than 32 mesh config
7456          * parameters (otherwise our bitfield scheme would not work.) */
7457         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7458
7459         /* Fill in the params struct */
7460         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7461                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7462         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7463                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
7464                                   nla_get_u16);
7465         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7466                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7467                                   nla_get_u16);
7468         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7469                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7470                                   nla_get_u16);
7471         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7472                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7473         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7474                                   NL80211_MESHCONF_TTL, nla_get_u8);
7475         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7476                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7477         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7478                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7479                                   nla_get_u8);
7480         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7481                                   mask,
7482                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7483                                   nla_get_u32);
7484         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7485                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7486                                   nla_get_u8);
7487         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7488                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7489                                   nla_get_u32);
7490         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7491             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7492                 return -EINVAL;
7493         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7494                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7495                                   nla_get_u16);
7496         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7497                                   mask,
7498                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7499                                   nla_get_u32);
7500         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7501             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7502              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7503                 return -EINVAL;
7504         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7505                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7506                                   nla_get_u16);
7507         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7508                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7509                                   nla_get_u16);
7510         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7511                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7512                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7513                                   nla_get_u16);
7514         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7515                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7516         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7517                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7518                                   nla_get_u16);
7519         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7520                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7521                                   nla_get_u8);
7522         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7523                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7524         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7525                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7526                                   nla_get_s32);
7527         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7528                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7529                                   nla_get_u8);
7530         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7531                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7532                                   nla_get_u8);
7533         /*
7534          * Check HT operation mode based on
7535          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7536          */
7537         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7538                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7539
7540                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7541                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7542                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7543                         return -EINVAL;
7544
7545                 /* NON_HT_STA bit is reserved, but some programs set it */
7546                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7547
7548                 cfg->ht_opmode = ht_opmode;
7549                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7550         }
7551         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7552                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7553                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7554                                   nla_get_u32);
7555         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7556             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7557              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7558                 return -EINVAL;
7559         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7560                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7561                                   nla_get_u16);
7562         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7563                                   mask,
7564                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7565                                   nla_get_u16);
7566         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7567                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7568         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7569                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7570         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7571                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7572         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7573                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7574         if (mask_out)
7575                 *mask_out = mask;
7576
7577         return 0;
7578
7579 #undef FILL_IN_MESH_PARAM_IF_SET
7580 }
7581
7582 static int nl80211_parse_mesh_setup(struct genl_info *info,
7583                                      struct mesh_setup *setup)
7584 {
7585         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7586         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7587
7588         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7589                 return -EINVAL;
7590         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7591                 return -EINVAL;
7592
7593         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7594                 setup->sync_method =
7595                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7596                  IEEE80211_SYNC_METHOD_VENDOR :
7597                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7598
7599         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7600                 setup->path_sel_proto =
7601                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7602                  IEEE80211_PATH_PROTOCOL_VENDOR :
7603                  IEEE80211_PATH_PROTOCOL_HWMP;
7604
7605         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7606                 setup->path_metric =
7607                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7608                  IEEE80211_PATH_METRIC_VENDOR :
7609                  IEEE80211_PATH_METRIC_AIRTIME;
7610
7611         if (tb[NL80211_MESH_SETUP_IE]) {
7612                 struct nlattr *ieattr =
7613                         tb[NL80211_MESH_SETUP_IE];
7614                 setup->ie = nla_data(ieattr);
7615                 setup->ie_len = nla_len(ieattr);
7616         }
7617         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7618             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7619                 return -EINVAL;
7620         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7621         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7622         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7623         if (setup->is_secure)
7624                 setup->user_mpm = true;
7625
7626         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7627                 if (!setup->user_mpm)
7628                         return -EINVAL;
7629                 setup->auth_id =
7630                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7631         }
7632
7633         return 0;
7634 }
7635
7636 static int nl80211_update_mesh_config(struct sk_buff *skb,
7637                                       struct genl_info *info)
7638 {
7639         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7640         struct net_device *dev = info->user_ptr[1];
7641         struct wireless_dev *wdev = dev->ieee80211_ptr;
7642         struct mesh_config cfg;
7643         u32 mask;
7644         int err;
7645
7646         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7647                 return -EOPNOTSUPP;
7648
7649         if (!rdev->ops->update_mesh_config)
7650                 return -EOPNOTSUPP;
7651
7652         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7653         if (err)
7654                 return err;
7655
7656         wdev_lock(wdev);
7657         if (!wdev->mesh_id_len)
7658                 err = -ENOLINK;
7659
7660         if (!err)
7661                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7662
7663         wdev_unlock(wdev);
7664
7665         return err;
7666 }
7667
7668 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7669                               struct sk_buff *msg)
7670 {
7671         struct nlattr *nl_reg_rules;
7672         unsigned int i;
7673
7674         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7675             (regdom->dfs_region &&
7676              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7677                 goto nla_put_failure;
7678
7679         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7680         if (!nl_reg_rules)
7681                 goto nla_put_failure;
7682
7683         for (i = 0; i < regdom->n_reg_rules; i++) {
7684                 struct nlattr *nl_reg_rule;
7685                 const struct ieee80211_reg_rule *reg_rule;
7686                 const struct ieee80211_freq_range *freq_range;
7687                 const struct ieee80211_power_rule *power_rule;
7688                 unsigned int max_bandwidth_khz;
7689
7690                 reg_rule = &regdom->reg_rules[i];
7691                 freq_range = &reg_rule->freq_range;
7692                 power_rule = &reg_rule->power_rule;
7693
7694                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7695                 if (!nl_reg_rule)
7696                         goto nla_put_failure;
7697
7698                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7699                 if (!max_bandwidth_khz)
7700                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7701                                                                   reg_rule);
7702
7703                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7704                                 reg_rule->flags) ||
7705                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7706                                 freq_range->start_freq_khz) ||
7707                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7708                                 freq_range->end_freq_khz) ||
7709                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7710                                 max_bandwidth_khz) ||
7711                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7712                                 power_rule->max_antenna_gain) ||
7713                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7714                                 power_rule->max_eirp) ||
7715                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7716                                 reg_rule->dfs_cac_ms))
7717                         goto nla_put_failure;
7718
7719                 nla_nest_end(msg, nl_reg_rule);
7720         }
7721
7722         nla_nest_end(msg, nl_reg_rules);
7723         return 0;
7724
7725 nla_put_failure:
7726         return -EMSGSIZE;
7727 }
7728
7729 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7730 {
7731         const struct ieee80211_regdomain *regdom = NULL;
7732         struct cfg80211_registered_device *rdev;
7733         struct wiphy *wiphy = NULL;
7734         struct sk_buff *msg;
7735         void *hdr;
7736
7737         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7738         if (!msg)
7739                 return -ENOBUFS;
7740
7741         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7742                              NL80211_CMD_GET_REG);
7743         if (!hdr)
7744                 goto put_failure;
7745
7746         rtnl_lock();
7747
7748         if (info->attrs[NL80211_ATTR_WIPHY]) {
7749                 bool self_managed;
7750
7751                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7752                 if (IS_ERR(rdev)) {
7753                         nlmsg_free(msg);
7754                         rtnl_unlock();
7755                         return PTR_ERR(rdev);
7756                 }
7757
7758                 wiphy = &rdev->wiphy;
7759                 self_managed = wiphy->regulatory_flags &
7760                                REGULATORY_WIPHY_SELF_MANAGED;
7761                 regdom = get_wiphy_regdom(wiphy);
7762
7763                 /* a self-managed-reg device must have a private regdom */
7764                 if (WARN_ON(!regdom && self_managed)) {
7765                         nlmsg_free(msg);
7766                         rtnl_unlock();
7767                         return -EINVAL;
7768                 }
7769
7770                 if (regdom &&
7771                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7772                         goto nla_put_failure;
7773         }
7774
7775         if (!wiphy && reg_last_request_cell_base() &&
7776             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7777                         NL80211_USER_REG_HINT_CELL_BASE))
7778                 goto nla_put_failure;
7779
7780         rcu_read_lock();
7781
7782         if (!regdom)
7783                 regdom = rcu_dereference(cfg80211_regdomain);
7784
7785         if (nl80211_put_regdom(regdom, msg))
7786                 goto nla_put_failure_rcu;
7787
7788         rcu_read_unlock();
7789
7790         genlmsg_end(msg, hdr);
7791         rtnl_unlock();
7792         return genlmsg_reply(msg, info);
7793
7794 nla_put_failure_rcu:
7795         rcu_read_unlock();
7796 nla_put_failure:
7797         rtnl_unlock();
7798 put_failure:
7799         nlmsg_free(msg);
7800         return -EMSGSIZE;
7801 }
7802
7803 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7804                                u32 seq, int flags, struct wiphy *wiphy,
7805                                const struct ieee80211_regdomain *regdom)
7806 {
7807         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7808                                    NL80211_CMD_GET_REG);
7809
7810         if (!hdr)
7811                 return -1;
7812
7813         genl_dump_check_consistent(cb, hdr);
7814
7815         if (nl80211_put_regdom(regdom, msg))
7816                 goto nla_put_failure;
7817
7818         if (!wiphy && reg_last_request_cell_base() &&
7819             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7820                         NL80211_USER_REG_HINT_CELL_BASE))
7821                 goto nla_put_failure;
7822
7823         if (wiphy &&
7824             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7825                 goto nla_put_failure;
7826
7827         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7828             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7829                 goto nla_put_failure;
7830
7831         genlmsg_end(msg, hdr);
7832         return 0;
7833
7834 nla_put_failure:
7835         genlmsg_cancel(msg, hdr);
7836         return -EMSGSIZE;
7837 }
7838
7839 static int nl80211_get_reg_dump(struct sk_buff *skb,
7840                                 struct netlink_callback *cb)
7841 {
7842         const struct ieee80211_regdomain *regdom = NULL;
7843         struct cfg80211_registered_device *rdev;
7844         int err, reg_idx, start = cb->args[2];
7845
7846         rtnl_lock();
7847
7848         if (cfg80211_regdomain && start == 0) {
7849                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7850                                           NLM_F_MULTI, NULL,
7851                                           rtnl_dereference(cfg80211_regdomain));
7852                 if (err < 0)
7853                         goto out_err;
7854         }
7855
7856         /* the global regdom is idx 0 */
7857         reg_idx = 1;
7858         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7859                 regdom = get_wiphy_regdom(&rdev->wiphy);
7860                 if (!regdom)
7861                         continue;
7862
7863                 if (++reg_idx <= start)
7864                         continue;
7865
7866                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7867                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7868                 if (err < 0) {
7869                         reg_idx--;
7870                         break;
7871                 }
7872         }
7873
7874         cb->args[2] = reg_idx;
7875         err = skb->len;
7876 out_err:
7877         rtnl_unlock();
7878         return err;
7879 }
7880
7881 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7882 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7883         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7884         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7885         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7886         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7887         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7888         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7889         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7890 };
7891
7892 static int parse_reg_rule(struct nlattr *tb[],
7893         struct ieee80211_reg_rule *reg_rule)
7894 {
7895         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7896         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7897
7898         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7899                 return -EINVAL;
7900         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7901                 return -EINVAL;
7902         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7903                 return -EINVAL;
7904         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7905                 return -EINVAL;
7906         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7907                 return -EINVAL;
7908
7909         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7910
7911         freq_range->start_freq_khz =
7912                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7913         freq_range->end_freq_khz =
7914                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7915         freq_range->max_bandwidth_khz =
7916                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7917
7918         power_rule->max_eirp =
7919                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7920
7921         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7922                 power_rule->max_antenna_gain =
7923                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7924
7925         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7926                 reg_rule->dfs_cac_ms =
7927                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7928
7929         return 0;
7930 }
7931
7932 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7933 {
7934         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7935         struct nlattr *nl_reg_rule;
7936         char *alpha2;
7937         int rem_reg_rules, r;
7938         u32 num_rules = 0, rule_idx = 0;
7939         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7940         struct ieee80211_regdomain *rd;
7941
7942         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7943                 return -EINVAL;
7944
7945         if (!info->attrs[NL80211_ATTR_REG_RULES])
7946                 return -EINVAL;
7947
7948         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7949
7950         if (info->attrs[NL80211_ATTR_DFS_REGION])
7951                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7952
7953         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7954                             rem_reg_rules) {
7955                 num_rules++;
7956                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7957                         return -EINVAL;
7958         }
7959
7960         rtnl_lock();
7961         if (!reg_is_valid_request(alpha2)) {
7962                 r = -EINVAL;
7963                 goto out;
7964         }
7965
7966         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7967         if (!rd) {
7968                 r = -ENOMEM;
7969                 goto out;
7970         }
7971
7972         rd->n_reg_rules = num_rules;
7973         rd->alpha2[0] = alpha2[0];
7974         rd->alpha2[1] = alpha2[1];
7975
7976         /*
7977          * Disable DFS master mode if the DFS region was
7978          * not supported or known on this kernel.
7979          */
7980         if (reg_supported_dfs_region(dfs_region))
7981                 rd->dfs_region = dfs_region;
7982
7983         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7984                             rem_reg_rules) {
7985                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7986                                                 nl_reg_rule, reg_rule_policy,
7987                                                 info->extack);
7988                 if (r)
7989                         goto bad_reg;
7990                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7991                 if (r)
7992                         goto bad_reg;
7993
7994                 rule_idx++;
7995
7996                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7997                         r = -EINVAL;
7998                         goto bad_reg;
7999                 }
8000         }
8001
8002         r = set_regdom(rd, REGD_SOURCE_CRDA);
8003         /* set_regdom takes ownership of rd */
8004         rd = NULL;
8005  bad_reg:
8006         kfree(rd);
8007  out:
8008         rtnl_unlock();
8009         return r;
8010 }
8011 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8012
8013 static int validate_scan_freqs(struct nlattr *freqs)
8014 {
8015         struct nlattr *attr1, *attr2;
8016         int n_channels = 0, tmp1, tmp2;
8017
8018         nla_for_each_nested(attr1, freqs, tmp1)
8019                 if (nla_len(attr1) != sizeof(u32))
8020                         return 0;
8021
8022         nla_for_each_nested(attr1, freqs, tmp1) {
8023                 n_channels++;
8024                 /*
8025                  * Some hardware has a limited channel list for
8026                  * scanning, and it is pretty much nonsensical
8027                  * to scan for a channel twice, so disallow that
8028                  * and don't require drivers to check that the
8029                  * channel list they get isn't longer than what
8030                  * they can scan, as long as they can scan all
8031                  * the channels they registered at once.
8032                  */
8033                 nla_for_each_nested(attr2, freqs, tmp2)
8034                         if (attr1 != attr2 &&
8035                             nla_get_u32(attr1) == nla_get_u32(attr2))
8036                                 return 0;
8037         }
8038
8039         return n_channels;
8040 }
8041
8042 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8043 {
8044         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8045 }
8046
8047 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8048                             struct cfg80211_bss_selection *bss_select)
8049 {
8050         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8051         struct nlattr *nest;
8052         int err;
8053         bool found = false;
8054         int i;
8055
8056         /* only process one nested attribute */
8057         nest = nla_data(nla);
8058         if (!nla_ok(nest, nla_len(nest)))
8059                 return -EINVAL;
8060
8061         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8062                                           nest, nl80211_bss_select_policy,
8063                                           NULL);
8064         if (err)
8065                 return err;
8066
8067         /* only one attribute may be given */
8068         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8069                 if (attr[i]) {
8070                         if (found)
8071                                 return -EINVAL;
8072                         found = true;
8073                 }
8074         }
8075
8076         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8077
8078         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8079                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8080
8081         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8082                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8083                 bss_select->param.band_pref =
8084                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8085                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8086                         return -EINVAL;
8087         }
8088
8089         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8090                 struct nl80211_bss_select_rssi_adjust *adj_param;
8091
8092                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8093                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8094                 bss_select->param.adjust.band = adj_param->band;
8095                 bss_select->param.adjust.delta = adj_param->delta;
8096                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8097                         return -EINVAL;
8098         }
8099
8100         /* user-space did not provide behaviour attribute */
8101         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8102                 return -EINVAL;
8103
8104         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8105                 return -EINVAL;
8106
8107         return 0;
8108 }
8109
8110 int nl80211_parse_random_mac(struct nlattr **attrs,
8111                              u8 *mac_addr, u8 *mac_addr_mask)
8112 {
8113         int i;
8114
8115         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8116                 eth_zero_addr(mac_addr);
8117                 eth_zero_addr(mac_addr_mask);
8118                 mac_addr[0] = 0x2;
8119                 mac_addr_mask[0] = 0x3;
8120
8121                 return 0;
8122         }
8123
8124         /* need both or none */
8125         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8126                 return -EINVAL;
8127
8128         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8129         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8130
8131         /* don't allow or configure an mcast address */
8132         if (!is_multicast_ether_addr(mac_addr_mask) ||
8133             is_multicast_ether_addr(mac_addr))
8134                 return -EINVAL;
8135
8136         /*
8137          * allow users to pass a MAC address that has bits set outside
8138          * of the mask, but don't bother drivers with having to deal
8139          * with such bits
8140          */
8141         for (i = 0; i < ETH_ALEN; i++)
8142                 mac_addr[i] &= mac_addr_mask[i];
8143
8144         return 0;
8145 }
8146
8147 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
8148 {
8149         ASSERT_WDEV_LOCK(wdev);
8150
8151         if (!cfg80211_beaconing_iface_active(wdev))
8152                 return true;
8153
8154         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
8155                 return true;
8156
8157         return regulatory_pre_cac_allowed(wdev->wiphy);
8158 }
8159
8160 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8161                                     enum nl80211_ext_feature_index feat)
8162 {
8163         if (!(flags & flag))
8164                 return true;
8165         if (wiphy_ext_feature_isset(wiphy, feat))
8166                 return true;
8167         return false;
8168 }
8169
8170 static int
8171 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8172                          void *request, struct nlattr **attrs,
8173                          bool is_sched_scan)
8174 {
8175         u8 *mac_addr, *mac_addr_mask;
8176         u32 *flags;
8177         enum nl80211_feature_flags randomness_flag;
8178
8179         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8180                 return 0;
8181
8182         if (is_sched_scan) {
8183                 struct cfg80211_sched_scan_request *req = request;
8184
8185                 randomness_flag = wdev ?
8186                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8187                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8188                 flags = &req->flags;
8189                 mac_addr = req->mac_addr;
8190                 mac_addr_mask = req->mac_addr_mask;
8191         } else {
8192                 struct cfg80211_scan_request *req = request;
8193
8194                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8195                 flags = &req->flags;
8196                 mac_addr = req->mac_addr;
8197                 mac_addr_mask = req->mac_addr_mask;
8198         }
8199
8200         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8201
8202         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8203              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8204             !nl80211_check_scan_feat(wiphy, *flags,
8205                                      NL80211_SCAN_FLAG_LOW_SPAN,
8206                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8207             !nl80211_check_scan_feat(wiphy, *flags,
8208                                      NL80211_SCAN_FLAG_LOW_POWER,
8209                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8210             !nl80211_check_scan_feat(wiphy, *flags,
8211                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8212                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8213             !nl80211_check_scan_feat(wiphy, *flags,
8214                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8215                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8216             !nl80211_check_scan_feat(wiphy, *flags,
8217                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8218                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8219             !nl80211_check_scan_feat(wiphy, *flags,
8220                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8221                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8222             !nl80211_check_scan_feat(wiphy, *flags,
8223                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8224                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8225             !nl80211_check_scan_feat(wiphy, *flags,
8226                                      NL80211_SCAN_FLAG_RANDOM_SN,
8227                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8228             !nl80211_check_scan_feat(wiphy, *flags,
8229                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8230                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8231                 return -EOPNOTSUPP;
8232
8233         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8234                 int err;
8235
8236                 if (!(wiphy->features & randomness_flag) ||
8237                     (wdev && wdev->current_bss))
8238                         return -EOPNOTSUPP;
8239
8240                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8241                 if (err)
8242                         return err;
8243         }
8244
8245         return 0;
8246 }
8247
8248 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8249 {
8250         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8251         struct wireless_dev *wdev = info->user_ptr[1];
8252         struct cfg80211_scan_request *request;
8253         struct nlattr *scan_freqs = NULL;
8254         bool scan_freqs_khz = false;
8255         struct nlattr *attr;
8256         struct wiphy *wiphy;
8257         int err, tmp, n_ssids = 0, n_channels, i;
8258         size_t ie_len;
8259
8260         wiphy = &rdev->wiphy;
8261
8262         if (wdev->iftype == NL80211_IFTYPE_NAN)
8263                 return -EOPNOTSUPP;
8264
8265         if (!rdev->ops->scan)
8266                 return -EOPNOTSUPP;
8267
8268         if (rdev->scan_req || rdev->scan_msg)
8269                 return -EBUSY;
8270
8271         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8272                 if (!wiphy_ext_feature_isset(wiphy,
8273                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8274                         return -EOPNOTSUPP;
8275                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8276                 scan_freqs_khz = true;
8277         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8278                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8279
8280         if (scan_freqs) {
8281                 n_channels = validate_scan_freqs(scan_freqs);
8282                 if (!n_channels)
8283                         return -EINVAL;
8284         } else {
8285                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8286         }
8287
8288         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8289                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8290                         n_ssids++;
8291
8292         if (n_ssids > wiphy->max_scan_ssids)
8293                 return -EINVAL;
8294
8295         if (info->attrs[NL80211_ATTR_IE])
8296                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8297         else
8298                 ie_len = 0;
8299
8300         if (ie_len > wiphy->max_scan_ie_len)
8301                 return -EINVAL;
8302
8303         request = kzalloc(sizeof(*request)
8304                         + sizeof(*request->ssids) * n_ssids
8305                         + sizeof(*request->channels) * n_channels
8306                         + ie_len, GFP_KERNEL);
8307         if (!request)
8308                 return -ENOMEM;
8309
8310         if (n_ssids)
8311                 request->ssids = (void *)&request->channels[n_channels];
8312         request->n_ssids = n_ssids;
8313         if (ie_len) {
8314                 if (n_ssids)
8315                         request->ie = (void *)(request->ssids + n_ssids);
8316                 else
8317                         request->ie = (void *)(request->channels + n_channels);
8318         }
8319
8320         i = 0;
8321         if (scan_freqs) {
8322                 /* user specified, bail out if channel not found */
8323                 nla_for_each_nested(attr, scan_freqs, tmp) {
8324                         struct ieee80211_channel *chan;
8325                         int freq = nla_get_u32(attr);
8326
8327                         if (!scan_freqs_khz)
8328                                 freq = MHZ_TO_KHZ(freq);
8329
8330                         chan = ieee80211_get_channel_khz(wiphy, freq);
8331                         if (!chan) {
8332                                 err = -EINVAL;
8333                                 goto out_free;
8334                         }
8335
8336                         /* ignore disabled channels */
8337                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8338                                 continue;
8339
8340                         request->channels[i] = chan;
8341                         i++;
8342                 }
8343         } else {
8344                 enum nl80211_band band;
8345
8346                 /* all channels */
8347                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8348                         int j;
8349
8350                         if (!wiphy->bands[band])
8351                                 continue;
8352                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8353                                 struct ieee80211_channel *chan;
8354
8355                                 chan = &wiphy->bands[band]->channels[j];
8356
8357                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8358                                         continue;
8359
8360                                 request->channels[i] = chan;
8361                                 i++;
8362                         }
8363                 }
8364         }
8365
8366         if (!i) {
8367                 err = -EINVAL;
8368                 goto out_free;
8369         }
8370
8371         request->n_channels = i;
8372
8373         wdev_lock(wdev);
8374         if (!cfg80211_off_channel_oper_allowed(wdev)) {
8375                 struct ieee80211_channel *chan;
8376
8377                 if (request->n_channels != 1) {
8378                         wdev_unlock(wdev);
8379                         err = -EBUSY;
8380                         goto out_free;
8381                 }
8382
8383                 chan = request->channels[0];
8384                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8385                         wdev_unlock(wdev);
8386                         err = -EBUSY;
8387                         goto out_free;
8388                 }
8389         }
8390         wdev_unlock(wdev);
8391
8392         i = 0;
8393         if (n_ssids) {
8394                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8395                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8396                                 err = -EINVAL;
8397                                 goto out_free;
8398                         }
8399                         request->ssids[i].ssid_len = nla_len(attr);
8400                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8401                         i++;
8402                 }
8403         }
8404
8405         if (info->attrs[NL80211_ATTR_IE]) {
8406                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8407                 memcpy((void *)request->ie,
8408                        nla_data(info->attrs[NL80211_ATTR_IE]),
8409                        request->ie_len);
8410         }
8411
8412         for (i = 0; i < NUM_NL80211_BANDS; i++)
8413                 if (wiphy->bands[i])
8414                         request->rates[i] =
8415                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
8416
8417         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8418                 nla_for_each_nested(attr,
8419                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8420                                     tmp) {
8421                         enum nl80211_band band = nla_type(attr);
8422
8423                         if (band < 0 || band >= NUM_NL80211_BANDS) {
8424                                 err = -EINVAL;
8425                                 goto out_free;
8426                         }
8427
8428                         if (!wiphy->bands[band])
8429                                 continue;
8430
8431                         err = ieee80211_get_ratemask(wiphy->bands[band],
8432                                                      nla_data(attr),
8433                                                      nla_len(attr),
8434                                                      &request->rates[band]);
8435                         if (err)
8436                                 goto out_free;
8437                 }
8438         }
8439
8440         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8441                 request->duration =
8442                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8443                 request->duration_mandatory =
8444                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8445         }
8446
8447         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8448                                        false);
8449         if (err)
8450                 goto out_free;
8451
8452         request->no_cck =
8453                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8454
8455         /* Initial implementation used NL80211_ATTR_MAC to set the specific
8456          * BSSID to scan for. This was problematic because that same attribute
8457          * was already used for another purpose (local random MAC address). The
8458          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8459          * compatibility with older userspace components, also use the
8460          * NL80211_ATTR_MAC value here if it can be determined to be used for
8461          * the specific BSSID use case instead of the random MAC address
8462          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8463          */
8464         if (info->attrs[NL80211_ATTR_BSSID])
8465                 memcpy(request->bssid,
8466                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8467         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8468                  info->attrs[NL80211_ATTR_MAC])
8469                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8470                        ETH_ALEN);
8471         else
8472                 eth_broadcast_addr(request->bssid);
8473
8474         request->wdev = wdev;
8475         request->wiphy = &rdev->wiphy;
8476         request->scan_start = jiffies;
8477
8478         rdev->scan_req = request;
8479         err = cfg80211_scan(rdev);
8480
8481         if (err)
8482                 goto out_free;
8483
8484         nl80211_send_scan_start(rdev, wdev);
8485         if (wdev->netdev)
8486                 dev_hold(wdev->netdev);
8487
8488         return 0;
8489
8490  out_free:
8491         rdev->scan_req = NULL;
8492         kfree(request);
8493
8494         return err;
8495 }
8496
8497 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8498 {
8499         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8500         struct wireless_dev *wdev = info->user_ptr[1];
8501
8502         if (!rdev->ops->abort_scan)
8503                 return -EOPNOTSUPP;
8504
8505         if (rdev->scan_msg)
8506                 return 0;
8507
8508         if (!rdev->scan_req)
8509                 return -ENOENT;
8510
8511         rdev_abort_scan(rdev, wdev);
8512         return 0;
8513 }
8514
8515 static int
8516 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8517                                struct cfg80211_sched_scan_request *request,
8518                                struct nlattr **attrs)
8519 {
8520         int tmp, err, i = 0;
8521         struct nlattr *attr;
8522
8523         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8524                 u32 interval;
8525
8526                 /*
8527                  * If scan plans are not specified,
8528                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8529                  * case one scan plan will be set with the specified scan
8530                  * interval and infinite number of iterations.
8531                  */
8532                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8533                 if (!interval)
8534                         return -EINVAL;
8535
8536                 request->scan_plans[0].interval =
8537                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8538                 if (!request->scan_plans[0].interval)
8539                         return -EINVAL;
8540
8541                 if (request->scan_plans[0].interval >
8542                     wiphy->max_sched_scan_plan_interval)
8543                         request->scan_plans[0].interval =
8544                                 wiphy->max_sched_scan_plan_interval;
8545
8546                 return 0;
8547         }
8548
8549         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8550                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8551
8552                 if (WARN_ON(i >= n_plans))
8553                         return -EINVAL;
8554
8555                 err = nla_parse_nested_deprecated(plan,
8556                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8557                                                   attr, nl80211_plan_policy,
8558                                                   NULL);
8559                 if (err)
8560                         return err;
8561
8562                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8563                         return -EINVAL;
8564
8565                 request->scan_plans[i].interval =
8566                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8567                 if (!request->scan_plans[i].interval ||
8568                     request->scan_plans[i].interval >
8569                     wiphy->max_sched_scan_plan_interval)
8570                         return -EINVAL;
8571
8572                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8573                         request->scan_plans[i].iterations =
8574                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8575                         if (!request->scan_plans[i].iterations ||
8576                             (request->scan_plans[i].iterations >
8577                              wiphy->max_sched_scan_plan_iterations))
8578                                 return -EINVAL;
8579                 } else if (i < n_plans - 1) {
8580                         /*
8581                          * All scan plans but the last one must specify
8582                          * a finite number of iterations
8583                          */
8584                         return -EINVAL;
8585                 }
8586
8587                 i++;
8588         }
8589
8590         /*
8591          * The last scan plan must not specify the number of
8592          * iterations, it is supposed to run infinitely
8593          */
8594         if (request->scan_plans[n_plans - 1].iterations)
8595                 return  -EINVAL;
8596
8597         return 0;
8598 }
8599
8600 static int
8601 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8602                                        struct cfg80211_match_set *match_sets,
8603                                        struct nlattr *tb_band_rssi,
8604                                        s32 rssi_thold)
8605 {
8606         struct nlattr *attr;
8607         int i, tmp, ret = 0;
8608
8609         if (!wiphy_ext_feature_isset(wiphy,
8610                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8611                 if (tb_band_rssi)
8612                         ret = -EOPNOTSUPP;
8613                 else
8614                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8615                                 match_sets->per_band_rssi_thold[i] =
8616                                         NL80211_SCAN_RSSI_THOLD_OFF;
8617                 return ret;
8618         }
8619
8620         for (i = 0; i < NUM_NL80211_BANDS; i++)
8621                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8622
8623         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8624                 enum nl80211_band band = nla_type(attr);
8625
8626                 if (band < 0 || band >= NUM_NL80211_BANDS)
8627                         return -EINVAL;
8628
8629                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8630         }
8631
8632         return 0;
8633 }
8634
8635 static struct cfg80211_sched_scan_request *
8636 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8637                          struct nlattr **attrs, int max_match_sets)
8638 {
8639         struct cfg80211_sched_scan_request *request;
8640         struct nlattr *attr;
8641         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8642         enum nl80211_band band;
8643         size_t ie_len;
8644         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8645         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8646
8647         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8648                 n_channels = validate_scan_freqs(
8649                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8650                 if (!n_channels)
8651                         return ERR_PTR(-EINVAL);
8652         } else {
8653                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8654         }
8655
8656         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8657                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8658                                     tmp)
8659                         n_ssids++;
8660
8661         if (n_ssids > wiphy->max_sched_scan_ssids)
8662                 return ERR_PTR(-EINVAL);
8663
8664         /*
8665          * First, count the number of 'real' matchsets. Due to an issue with
8666          * the old implementation, matchsets containing only the RSSI attribute
8667          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8668          * RSSI for all matchsets, rather than their own matchset for reporting
8669          * all APs with a strong RSSI. This is needed to be compatible with
8670          * older userspace that treated a matchset with only the RSSI as the
8671          * global RSSI for all other matchsets - if there are other matchsets.
8672          */
8673         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8674                 nla_for_each_nested(attr,
8675                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8676                                     tmp) {
8677                         struct nlattr *rssi;
8678
8679                         err = nla_parse_nested_deprecated(tb,
8680                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8681                                                           attr,
8682                                                           nl80211_match_policy,
8683                                                           NULL);
8684                         if (err)
8685                                 return ERR_PTR(err);
8686
8687                         /* SSID and BSSID are mutually exclusive */
8688                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8689                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8690                                 return ERR_PTR(-EINVAL);
8691
8692                         /* add other standalone attributes here */
8693                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8694                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8695                                 n_match_sets++;
8696                                 continue;
8697                         }
8698                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8699                         if (rssi)
8700                                 default_match_rssi = nla_get_s32(rssi);
8701                 }
8702         }
8703
8704         /* However, if there's no other matchset, add the RSSI one */
8705         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8706                 n_match_sets = 1;
8707
8708         if (n_match_sets > max_match_sets)
8709                 return ERR_PTR(-EINVAL);
8710
8711         if (attrs[NL80211_ATTR_IE])
8712                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8713         else
8714                 ie_len = 0;
8715
8716         if (ie_len > wiphy->max_sched_scan_ie_len)
8717                 return ERR_PTR(-EINVAL);
8718
8719         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8720                 /*
8721                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8722                  * each scan plan already specifies its own interval
8723                  */
8724                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8725                         return ERR_PTR(-EINVAL);
8726
8727                 nla_for_each_nested(attr,
8728                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8729                         n_plans++;
8730         } else {
8731                 /*
8732                  * The scan interval attribute is kept for backward
8733                  * compatibility. If no scan plans are specified and sched scan
8734                  * interval is specified, one scan plan will be set with this
8735                  * scan interval and infinite number of iterations.
8736                  */
8737                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8738                         return ERR_PTR(-EINVAL);
8739
8740                 n_plans = 1;
8741         }
8742
8743         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8744                 return ERR_PTR(-EINVAL);
8745
8746         if (!wiphy_ext_feature_isset(
8747                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8748             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8749              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8750                 return ERR_PTR(-EINVAL);
8751
8752         request = kzalloc(sizeof(*request)
8753                         + sizeof(*request->ssids) * n_ssids
8754                         + sizeof(*request->match_sets) * n_match_sets
8755                         + sizeof(*request->scan_plans) * n_plans
8756                         + sizeof(*request->channels) * n_channels
8757                         + ie_len, GFP_KERNEL);
8758         if (!request)
8759                 return ERR_PTR(-ENOMEM);
8760
8761         if (n_ssids)
8762                 request->ssids = (void *)&request->channels[n_channels];
8763         request->n_ssids = n_ssids;
8764         if (ie_len) {
8765                 if (n_ssids)
8766                         request->ie = (void *)(request->ssids + n_ssids);
8767                 else
8768                         request->ie = (void *)(request->channels + n_channels);
8769         }
8770
8771         if (n_match_sets) {
8772                 if (request->ie)
8773                         request->match_sets = (void *)(request->ie + ie_len);
8774                 else if (n_ssids)
8775                         request->match_sets =
8776                                 (void *)(request->ssids + n_ssids);
8777                 else
8778                         request->match_sets =
8779                                 (void *)(request->channels + n_channels);
8780         }
8781         request->n_match_sets = n_match_sets;
8782
8783         if (n_match_sets)
8784                 request->scan_plans = (void *)(request->match_sets +
8785                                                n_match_sets);
8786         else if (request->ie)
8787                 request->scan_plans = (void *)(request->ie + ie_len);
8788         else if (n_ssids)
8789                 request->scan_plans = (void *)(request->ssids + n_ssids);
8790         else
8791                 request->scan_plans = (void *)(request->channels + n_channels);
8792
8793         request->n_scan_plans = n_plans;
8794
8795         i = 0;
8796         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8797                 /* user specified, bail out if channel not found */
8798                 nla_for_each_nested(attr,
8799                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8800                                     tmp) {
8801                         struct ieee80211_channel *chan;
8802
8803                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8804
8805                         if (!chan) {
8806                                 err = -EINVAL;
8807                                 goto out_free;
8808                         }
8809
8810                         /* ignore disabled channels */
8811                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8812                                 continue;
8813
8814                         request->channels[i] = chan;
8815                         i++;
8816                 }
8817         } else {
8818                 /* all channels */
8819                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8820                         int j;
8821
8822                         if (!wiphy->bands[band])
8823                                 continue;
8824                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8825                                 struct ieee80211_channel *chan;
8826
8827                                 chan = &wiphy->bands[band]->channels[j];
8828
8829                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8830                                         continue;
8831
8832                                 request->channels[i] = chan;
8833                                 i++;
8834                         }
8835                 }
8836         }
8837
8838         if (!i) {
8839                 err = -EINVAL;
8840                 goto out_free;
8841         }
8842
8843         request->n_channels = i;
8844
8845         i = 0;
8846         if (n_ssids) {
8847                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8848                                     tmp) {
8849                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8850                                 err = -EINVAL;
8851                                 goto out_free;
8852                         }
8853                         request->ssids[i].ssid_len = nla_len(attr);
8854                         memcpy(request->ssids[i].ssid, nla_data(attr),
8855                                nla_len(attr));
8856                         i++;
8857                 }
8858         }
8859
8860         i = 0;
8861         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8862                 nla_for_each_nested(attr,
8863                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8864                                     tmp) {
8865                         struct nlattr *ssid, *bssid, *rssi;
8866
8867                         err = nla_parse_nested_deprecated(tb,
8868                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8869                                                           attr,
8870                                                           nl80211_match_policy,
8871                                                           NULL);
8872                         if (err)
8873                                 goto out_free;
8874                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8875                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8876
8877                         if (!ssid && !bssid) {
8878                                 i++;
8879                                 continue;
8880                         }
8881
8882                         if (WARN_ON(i >= n_match_sets)) {
8883                                 /* this indicates a programming error,
8884                                  * the loop above should have verified
8885                                  * things properly
8886                                  */
8887                                 err = -EINVAL;
8888                                 goto out_free;
8889                         }
8890
8891                         if (ssid) {
8892                                 memcpy(request->match_sets[i].ssid.ssid,
8893                                        nla_data(ssid), nla_len(ssid));
8894                                 request->match_sets[i].ssid.ssid_len =
8895                                         nla_len(ssid);
8896                         }
8897                         if (bssid)
8898                                 memcpy(request->match_sets[i].bssid,
8899                                        nla_data(bssid), ETH_ALEN);
8900
8901                         /* special attribute - old implementation w/a */
8902                         request->match_sets[i].rssi_thold = default_match_rssi;
8903                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8904                         if (rssi)
8905                                 request->match_sets[i].rssi_thold =
8906                                         nla_get_s32(rssi);
8907
8908                         /* Parse per band RSSI attribute */
8909                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8910                                 &request->match_sets[i],
8911                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8912                                 request->match_sets[i].rssi_thold);
8913                         if (err)
8914                                 goto out_free;
8915
8916                         i++;
8917                 }
8918
8919                 /* there was no other matchset, so the RSSI one is alone */
8920                 if (i == 0 && n_match_sets)
8921                         request->match_sets[0].rssi_thold = default_match_rssi;
8922
8923                 request->min_rssi_thold = INT_MAX;
8924                 for (i = 0; i < n_match_sets; i++)
8925                         request->min_rssi_thold =
8926                                 min(request->match_sets[i].rssi_thold,
8927                                     request->min_rssi_thold);
8928         } else {
8929                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8930         }
8931
8932         if (ie_len) {
8933                 request->ie_len = ie_len;
8934                 memcpy((void *)request->ie,
8935                        nla_data(attrs[NL80211_ATTR_IE]),
8936                        request->ie_len);
8937         }
8938
8939         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8940         if (err)
8941                 goto out_free;
8942
8943         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8944                 request->delay =
8945                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8946
8947         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8948                 request->relative_rssi = nla_get_s8(
8949                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8950                 request->relative_rssi_set = true;
8951         }
8952
8953         if (request->relative_rssi_set &&
8954             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8955                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8956
8957                 rssi_adjust = nla_data(
8958                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8959                 request->rssi_adjust.band = rssi_adjust->band;
8960                 request->rssi_adjust.delta = rssi_adjust->delta;
8961                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8962                         err = -EINVAL;
8963                         goto out_free;
8964                 }
8965         }
8966
8967         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8968         if (err)
8969                 goto out_free;
8970
8971         request->scan_start = jiffies;
8972
8973         return request;
8974
8975 out_free:
8976         kfree(request);
8977         return ERR_PTR(err);
8978 }
8979
8980 static int nl80211_start_sched_scan(struct sk_buff *skb,
8981                                     struct genl_info *info)
8982 {
8983         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8984         struct net_device *dev = info->user_ptr[1];
8985         struct wireless_dev *wdev = dev->ieee80211_ptr;
8986         struct cfg80211_sched_scan_request *sched_scan_req;
8987         bool want_multi;
8988         int err;
8989
8990         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8991                 return -EOPNOTSUPP;
8992
8993         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8994         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8995         if (err)
8996                 return err;
8997
8998         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8999                                                   info->attrs,
9000                                                   rdev->wiphy.max_match_sets);
9001
9002         err = PTR_ERR_OR_ZERO(sched_scan_req);
9003         if (err)
9004                 goto out_err;
9005
9006         /* leave request id zero for legacy request
9007          * or if driver does not support multi-scheduled scan
9008          */
9009         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9010                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9011
9012         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9013         if (err)
9014                 goto out_free;
9015
9016         sched_scan_req->dev = dev;
9017         sched_scan_req->wiphy = &rdev->wiphy;
9018
9019         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9020                 sched_scan_req->owner_nlportid = info->snd_portid;
9021
9022         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9023
9024         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9025         return 0;
9026
9027 out_free:
9028         kfree(sched_scan_req);
9029 out_err:
9030         return err;
9031 }
9032
9033 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9034                                    struct genl_info *info)
9035 {
9036         struct cfg80211_sched_scan_request *req;
9037         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9038         u64 cookie;
9039
9040         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9041                 return -EOPNOTSUPP;
9042
9043         if (info->attrs[NL80211_ATTR_COOKIE]) {
9044                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9045                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9046         }
9047
9048         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9049                                      struct cfg80211_sched_scan_request,
9050                                      list);
9051         if (!req || req->reqid ||
9052             (req->owner_nlportid &&
9053              req->owner_nlportid != info->snd_portid))
9054                 return -ENOENT;
9055
9056         return cfg80211_stop_sched_scan_req(rdev, req, false);
9057 }
9058
9059 static int nl80211_start_radar_detection(struct sk_buff *skb,
9060                                          struct genl_info *info)
9061 {
9062         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9063         struct net_device *dev = info->user_ptr[1];
9064         struct wireless_dev *wdev = dev->ieee80211_ptr;
9065         struct wiphy *wiphy = wdev->wiphy;
9066         struct cfg80211_chan_def chandef;
9067         enum nl80211_dfs_regions dfs_region;
9068         unsigned int cac_time_ms;
9069         int err;
9070
9071         dfs_region = reg_get_dfs_region(wiphy);
9072         if (dfs_region == NL80211_DFS_UNSET)
9073                 return -EINVAL;
9074
9075         err = nl80211_parse_chandef(rdev, info, &chandef);
9076         if (err)
9077                 return err;
9078
9079         if (netif_carrier_ok(dev))
9080                 return -EBUSY;
9081
9082         if (wdev->cac_started)
9083                 return -EBUSY;
9084
9085         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9086         if (err < 0)
9087                 return err;
9088
9089         if (err == 0)
9090                 return -EINVAL;
9091
9092         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
9093                 return -EINVAL;
9094
9095         /* CAC start is offloaded to HW and can't be started manually */
9096         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
9097                 return -EOPNOTSUPP;
9098
9099         if (!rdev->ops->start_radar_detection)
9100                 return -EOPNOTSUPP;
9101
9102         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9103         if (WARN_ON(!cac_time_ms))
9104                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9105
9106         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9107         if (!err) {
9108                 wdev->chandef = chandef;
9109                 wdev->cac_started = true;
9110                 wdev->cac_start_time = jiffies;
9111                 wdev->cac_time_ms = cac_time_ms;
9112         }
9113         return err;
9114 }
9115
9116 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9117                                           struct genl_info *info)
9118 {
9119         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9120         struct net_device *dev = info->user_ptr[1];
9121         struct wireless_dev *wdev = dev->ieee80211_ptr;
9122         struct wiphy *wiphy = wdev->wiphy;
9123         struct cfg80211_chan_def chandef;
9124         enum nl80211_dfs_regions dfs_region;
9125         int err;
9126
9127         dfs_region = reg_get_dfs_region(wiphy);
9128         if (dfs_region == NL80211_DFS_UNSET) {
9129                 GENL_SET_ERR_MSG(info,
9130                                  "DFS Region is not set. Unexpected Radar indication");
9131                 return -EINVAL;
9132         }
9133
9134         err = nl80211_parse_chandef(rdev, info, &chandef);
9135         if (err) {
9136                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9137                 return err;
9138         }
9139
9140         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9141         if (err < 0) {
9142                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9143                 return err;
9144         }
9145
9146         if (err == 0) {
9147                 GENL_SET_ERR_MSG(info,
9148                                  "Unexpected Radar indication for chandef/iftype");
9149                 return -EINVAL;
9150         }
9151
9152         /* Do not process this notification if radar is already detected
9153          * by kernel on this channel, and return success.
9154          */
9155         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9156                 return 0;
9157
9158         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9159
9160         cfg80211_sched_dfs_chan_update(rdev);
9161
9162         rdev->radar_chandef = chandef;
9163
9164         /* Propagate this notification to other radios as well */
9165         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9166
9167         return 0;
9168 }
9169
9170 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9171 {
9172         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9173         struct net_device *dev = info->user_ptr[1];
9174         struct wireless_dev *wdev = dev->ieee80211_ptr;
9175         struct cfg80211_csa_settings params;
9176         struct nlattr **csa_attrs = NULL;
9177         int err;
9178         bool need_new_beacon = false;
9179         bool need_handle_dfs_flag = true;
9180         int len, i;
9181         u32 cs_count;
9182
9183         if (!rdev->ops->channel_switch ||
9184             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9185                 return -EOPNOTSUPP;
9186
9187         switch (dev->ieee80211_ptr->iftype) {
9188         case NL80211_IFTYPE_AP:
9189         case NL80211_IFTYPE_P2P_GO:
9190                 need_new_beacon = true;
9191                 /* For all modes except AP the handle_dfs flag needs to be
9192                  * supplied to tell the kernel that userspace will handle radar
9193                  * events when they happen. Otherwise a switch to a channel
9194                  * requiring DFS will be rejected.
9195                  */
9196                 need_handle_dfs_flag = false;
9197
9198                 /* useless if AP is not running */
9199                 if (!wdev->beacon_interval)
9200                         return -ENOTCONN;
9201                 break;
9202         case NL80211_IFTYPE_ADHOC:
9203                 if (!wdev->ssid_len)
9204                         return -ENOTCONN;
9205                 break;
9206         case NL80211_IFTYPE_MESH_POINT:
9207                 if (!wdev->mesh_id_len)
9208                         return -ENOTCONN;
9209                 break;
9210         default:
9211                 return -EOPNOTSUPP;
9212         }
9213
9214         memset(&params, 0, sizeof(params));
9215         params.beacon_csa.ftm_responder = -1;
9216
9217         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9218             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9219                 return -EINVAL;
9220
9221         /* only important for AP, IBSS and mesh create IEs internally */
9222         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9223                 return -EINVAL;
9224
9225         /* Even though the attribute is u32, the specification says
9226          * u8, so let's make sure we don't overflow.
9227          */
9228         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9229         if (cs_count > 255)
9230                 return -EINVAL;
9231
9232         params.count = cs_count;
9233
9234         if (!need_new_beacon)
9235                 goto skip_beacons;
9236
9237         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9238         if (err)
9239                 return err;
9240
9241         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9242                             GFP_KERNEL);
9243         if (!csa_attrs)
9244                 return -ENOMEM;
9245
9246         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9247                                           info->attrs[NL80211_ATTR_CSA_IES],
9248                                           nl80211_policy, info->extack);
9249         if (err)
9250                 goto free;
9251
9252         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9253         if (err)
9254                 goto free;
9255
9256         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9257                 err = -EINVAL;
9258                 goto free;
9259         }
9260
9261         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9262         if (!len || (len % sizeof(u16))) {
9263                 err = -EINVAL;
9264                 goto free;
9265         }
9266
9267         params.n_counter_offsets_beacon = len / sizeof(u16);
9268         if (rdev->wiphy.max_num_csa_counters &&
9269             (params.n_counter_offsets_beacon >
9270              rdev->wiphy.max_num_csa_counters)) {
9271                 err = -EINVAL;
9272                 goto free;
9273         }
9274
9275         params.counter_offsets_beacon =
9276                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9277
9278         /* sanity checks - counters should fit and be the same */
9279         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9280                 u16 offset = params.counter_offsets_beacon[i];
9281
9282                 if (offset >= params.beacon_csa.tail_len) {
9283                         err = -EINVAL;
9284                         goto free;
9285                 }
9286
9287                 if (params.beacon_csa.tail[offset] != params.count) {
9288                         err = -EINVAL;
9289                         goto free;
9290                 }
9291         }
9292
9293         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9294                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9295                 if (!len || (len % sizeof(u16))) {
9296                         err = -EINVAL;
9297                         goto free;
9298                 }
9299
9300                 params.n_counter_offsets_presp = len / sizeof(u16);
9301                 if (rdev->wiphy.max_num_csa_counters &&
9302                     (params.n_counter_offsets_presp >
9303                      rdev->wiphy.max_num_csa_counters)) {
9304                         err = -EINVAL;
9305                         goto free;
9306                 }
9307
9308                 params.counter_offsets_presp =
9309                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9310
9311                 /* sanity checks - counters should fit and be the same */
9312                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9313                         u16 offset = params.counter_offsets_presp[i];
9314
9315                         if (offset >= params.beacon_csa.probe_resp_len) {
9316                                 err = -EINVAL;
9317                                 goto free;
9318                         }
9319
9320                         if (params.beacon_csa.probe_resp[offset] !=
9321                             params.count) {
9322                                 err = -EINVAL;
9323                                 goto free;
9324                         }
9325                 }
9326         }
9327
9328 skip_beacons:
9329         err = nl80211_parse_chandef(rdev, info, &params.chandef);
9330         if (err)
9331                 goto free;
9332
9333         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9334                                            wdev->iftype)) {
9335                 err = -EINVAL;
9336                 goto free;
9337         }
9338
9339         err = cfg80211_chandef_dfs_required(wdev->wiphy,
9340                                             &params.chandef,
9341                                             wdev->iftype);
9342         if (err < 0)
9343                 goto free;
9344
9345         if (err > 0) {
9346                 params.radar_required = true;
9347                 if (need_handle_dfs_flag &&
9348                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9349                         err = -EINVAL;
9350                         goto free;
9351                 }
9352         }
9353
9354         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9355                 params.block_tx = true;
9356
9357         wdev_lock(wdev);
9358         err = rdev_channel_switch(rdev, dev, &params);
9359         wdev_unlock(wdev);
9360
9361 free:
9362         kfree(csa_attrs);
9363         return err;
9364 }
9365
9366 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9367                             u32 seq, int flags,
9368                             struct cfg80211_registered_device *rdev,
9369                             struct wireless_dev *wdev,
9370                             struct cfg80211_internal_bss *intbss)
9371 {
9372         struct cfg80211_bss *res = &intbss->pub;
9373         const struct cfg80211_bss_ies *ies;
9374         void *hdr;
9375         struct nlattr *bss;
9376
9377         ASSERT_WDEV_LOCK(wdev);
9378
9379         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9380                              NL80211_CMD_NEW_SCAN_RESULTS);
9381         if (!hdr)
9382                 return -1;
9383
9384         genl_dump_check_consistent(cb, hdr);
9385
9386         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9387                 goto nla_put_failure;
9388         if (wdev->netdev &&
9389             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9390                 goto nla_put_failure;
9391         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9392                               NL80211_ATTR_PAD))
9393                 goto nla_put_failure;
9394
9395         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9396         if (!bss)
9397                 goto nla_put_failure;
9398         if ((!is_zero_ether_addr(res->bssid) &&
9399              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9400                 goto nla_put_failure;
9401
9402         rcu_read_lock();
9403         /* indicate whether we have probe response data or not */
9404         if (rcu_access_pointer(res->proberesp_ies) &&
9405             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9406                 goto fail_unlock_rcu;
9407
9408         /* this pointer prefers to be pointed to probe response data
9409          * but is always valid
9410          */
9411         ies = rcu_dereference(res->ies);
9412         if (ies) {
9413                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9414                                       NL80211_BSS_PAD))
9415                         goto fail_unlock_rcu;
9416                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9417                                         ies->len, ies->data))
9418                         goto fail_unlock_rcu;
9419         }
9420
9421         /* and this pointer is always (unless driver didn't know) beacon data */
9422         ies = rcu_dereference(res->beacon_ies);
9423         if (ies && ies->from_beacon) {
9424                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9425                                       NL80211_BSS_PAD))
9426                         goto fail_unlock_rcu;
9427                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9428                                         ies->len, ies->data))
9429                         goto fail_unlock_rcu;
9430         }
9431         rcu_read_unlock();
9432
9433         if (res->beacon_interval &&
9434             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9435                 goto nla_put_failure;
9436         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9437             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9438             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9439                         res->channel->freq_offset) ||
9440             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9441             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9442                         jiffies_to_msecs(jiffies - intbss->ts)))
9443                 goto nla_put_failure;
9444
9445         if (intbss->parent_tsf &&
9446             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9447                                intbss->parent_tsf, NL80211_BSS_PAD) ||
9448              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9449                      intbss->parent_bssid)))
9450                 goto nla_put_failure;
9451
9452         if (intbss->ts_boottime &&
9453             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9454                               intbss->ts_boottime, NL80211_BSS_PAD))
9455                 goto nla_put_failure;
9456
9457         if (!nl80211_put_signal(msg, intbss->pub.chains,
9458                                 intbss->pub.chain_signal,
9459                                 NL80211_BSS_CHAIN_SIGNAL))
9460                 goto nla_put_failure;
9461
9462         switch (rdev->wiphy.signal_type) {
9463         case CFG80211_SIGNAL_TYPE_MBM:
9464                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9465                         goto nla_put_failure;
9466                 break;
9467         case CFG80211_SIGNAL_TYPE_UNSPEC:
9468                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9469                         goto nla_put_failure;
9470                 break;
9471         default:
9472                 break;
9473         }
9474
9475         switch (wdev->iftype) {
9476         case NL80211_IFTYPE_P2P_CLIENT:
9477         case NL80211_IFTYPE_STATION:
9478                 if (intbss == wdev->current_bss &&
9479                     nla_put_u32(msg, NL80211_BSS_STATUS,
9480                                 NL80211_BSS_STATUS_ASSOCIATED))
9481                         goto nla_put_failure;
9482                 break;
9483         case NL80211_IFTYPE_ADHOC:
9484                 if (intbss == wdev->current_bss &&
9485                     nla_put_u32(msg, NL80211_BSS_STATUS,
9486                                 NL80211_BSS_STATUS_IBSS_JOINED))
9487                         goto nla_put_failure;
9488                 break;
9489         default:
9490                 break;
9491         }
9492
9493         nla_nest_end(msg, bss);
9494
9495         genlmsg_end(msg, hdr);
9496         return 0;
9497
9498  fail_unlock_rcu:
9499         rcu_read_unlock();
9500  nla_put_failure:
9501         genlmsg_cancel(msg, hdr);
9502         return -EMSGSIZE;
9503 }
9504
9505 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9506 {
9507         struct cfg80211_registered_device *rdev;
9508         struct cfg80211_internal_bss *scan;
9509         struct wireless_dev *wdev;
9510         int start = cb->args[2], idx = 0;
9511         int err;
9512
9513         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9514         if (err)
9515                 return err;
9516         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9517         __acquire(&rdev->wiphy.mtx);
9518
9519         wdev_lock(wdev);
9520         spin_lock_bh(&rdev->bss_lock);
9521
9522         /*
9523          * dump_scan will be called multiple times to break up the scan results
9524          * into multiple messages.  It is unlikely that any more bss-es will be
9525          * expired after the first call, so only call only call this on the
9526          * first dump_scan invocation.
9527          */
9528         if (start == 0)
9529                 cfg80211_bss_expire(rdev);
9530
9531         cb->seq = rdev->bss_generation;
9532
9533         list_for_each_entry(scan, &rdev->bss_list, list) {
9534                 if (++idx <= start)
9535                         continue;
9536                 if (nl80211_send_bss(skb, cb,
9537                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9538                                 rdev, wdev, scan) < 0) {
9539                         idx--;
9540                         break;
9541                 }
9542         }
9543
9544         spin_unlock_bh(&rdev->bss_lock);
9545         wdev_unlock(wdev);
9546
9547         cb->args[2] = idx;
9548         wiphy_unlock(&rdev->wiphy);
9549
9550         return skb->len;
9551 }
9552
9553 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9554                                int flags, struct net_device *dev,
9555                                bool allow_radio_stats,
9556                                struct survey_info *survey)
9557 {
9558         void *hdr;
9559         struct nlattr *infoattr;
9560
9561         /* skip radio stats if userspace didn't request them */
9562         if (!survey->channel && !allow_radio_stats)
9563                 return 0;
9564
9565         hdr = nl80211hdr_put(msg, portid, seq, flags,
9566                              NL80211_CMD_NEW_SURVEY_RESULTS);
9567         if (!hdr)
9568                 return -ENOMEM;
9569
9570         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9571                 goto nla_put_failure;
9572
9573         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9574         if (!infoattr)
9575                 goto nla_put_failure;
9576
9577         if (survey->channel &&
9578             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9579                         survey->channel->center_freq))
9580                 goto nla_put_failure;
9581
9582         if (survey->channel && survey->channel->freq_offset &&
9583             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9584                         survey->channel->freq_offset))
9585                 goto nla_put_failure;
9586
9587         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9588             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9589                 goto nla_put_failure;
9590         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9591             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9592                 goto nla_put_failure;
9593         if ((survey->filled & SURVEY_INFO_TIME) &&
9594             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9595                         survey->time, NL80211_SURVEY_INFO_PAD))
9596                 goto nla_put_failure;
9597         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9598             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9599                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9600                 goto nla_put_failure;
9601         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9602             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9603                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9604                 goto nla_put_failure;
9605         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9606             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9607                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9608                 goto nla_put_failure;
9609         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9610             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9611                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9612                 goto nla_put_failure;
9613         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9614             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9615                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9616                 goto nla_put_failure;
9617         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9618             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9619                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9620                 goto nla_put_failure;
9621
9622         nla_nest_end(msg, infoattr);
9623
9624         genlmsg_end(msg, hdr);
9625         return 0;
9626
9627  nla_put_failure:
9628         genlmsg_cancel(msg, hdr);
9629         return -EMSGSIZE;
9630 }
9631
9632 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9633 {
9634         struct nlattr **attrbuf;
9635         struct survey_info survey;
9636         struct cfg80211_registered_device *rdev;
9637         struct wireless_dev *wdev;
9638         int survey_idx = cb->args[2];
9639         int res;
9640         bool radio_stats;
9641
9642         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9643         if (!attrbuf)
9644                 return -ENOMEM;
9645
9646         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9647         if (res) {
9648                 kfree(attrbuf);
9649                 return res;
9650         }
9651         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9652         __acquire(&rdev->wiphy.mtx);
9653
9654         /* prepare_wdev_dump parsed the attributes */
9655         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9656
9657         if (!wdev->netdev) {
9658                 res = -EINVAL;
9659                 goto out_err;
9660         }
9661
9662         if (!rdev->ops->dump_survey) {
9663                 res = -EOPNOTSUPP;
9664                 goto out_err;
9665         }
9666
9667         while (1) {
9668                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9669                 if (res == -ENOENT)
9670                         break;
9671                 if (res)
9672                         goto out_err;
9673
9674                 /* don't send disabled channels, but do send non-channel data */
9675                 if (survey.channel &&
9676                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9677                         survey_idx++;
9678                         continue;
9679                 }
9680
9681                 if (nl80211_send_survey(skb,
9682                                 NETLINK_CB(cb->skb).portid,
9683                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9684                                 wdev->netdev, radio_stats, &survey) < 0)
9685                         goto out;
9686                 survey_idx++;
9687         }
9688
9689  out:
9690         cb->args[2] = survey_idx;
9691         res = skb->len;
9692  out_err:
9693         kfree(attrbuf);
9694         wiphy_unlock(&rdev->wiphy);
9695         return res;
9696 }
9697
9698 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9699 {
9700         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9701                                   NL80211_WPA_VERSION_2 |
9702                                   NL80211_WPA_VERSION_3));
9703 }
9704
9705 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9706 {
9707         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9708         struct net_device *dev = info->user_ptr[1];
9709         struct ieee80211_channel *chan;
9710         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9711         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9712         enum nl80211_auth_type auth_type;
9713         struct key_parse key;
9714         bool local_state_change;
9715         u32 freq;
9716
9717         if (!info->attrs[NL80211_ATTR_MAC])
9718                 return -EINVAL;
9719
9720         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9721                 return -EINVAL;
9722
9723         if (!info->attrs[NL80211_ATTR_SSID])
9724                 return -EINVAL;
9725
9726         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9727                 return -EINVAL;
9728
9729         err = nl80211_parse_key(info, &key);
9730         if (err)
9731                 return err;
9732
9733         if (key.idx >= 0) {
9734                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9735                         return -EINVAL;
9736                 if (!key.p.key || !key.p.key_len)
9737                         return -EINVAL;
9738                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9739                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9740                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9741                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9742                         return -EINVAL;
9743                 if (key.idx > 3)
9744                         return -EINVAL;
9745         } else {
9746                 key.p.key_len = 0;
9747                 key.p.key = NULL;
9748         }
9749
9750         if (key.idx >= 0) {
9751                 int i;
9752                 bool ok = false;
9753
9754                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9755                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9756                                 ok = true;
9757                                 break;
9758                         }
9759                 }
9760                 if (!ok)
9761                         return -EINVAL;
9762         }
9763
9764         if (!rdev->ops->auth)
9765                 return -EOPNOTSUPP;
9766
9767         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9768             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9769                 return -EOPNOTSUPP;
9770
9771         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9772         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9773         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9774                 freq +=
9775                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9776
9777         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9778         if (!chan)
9779                 return -EINVAL;
9780
9781         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9782         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9783
9784         if (info->attrs[NL80211_ATTR_IE]) {
9785                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9786                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9787         }
9788
9789         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9790         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9791                 return -EINVAL;
9792
9793         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9794              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9795              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9796              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9797             !info->attrs[NL80211_ATTR_AUTH_DATA])
9798                 return -EINVAL;
9799
9800         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9801                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9802                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9803                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9804                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9805                         return -EINVAL;
9806                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9807                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9808         }
9809
9810         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9811
9812         /*
9813          * Since we no longer track auth state, ignore
9814          * requests to only change local state.
9815          */
9816         if (local_state_change)
9817                 return 0;
9818
9819         wdev_lock(dev->ieee80211_ptr);
9820         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9821                                  ssid, ssid_len, ie, ie_len,
9822                                  key.p.key, key.p.key_len, key.idx,
9823                                  auth_data, auth_data_len);
9824         wdev_unlock(dev->ieee80211_ptr);
9825         return err;
9826 }
9827
9828 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9829                                      struct genl_info *info)
9830 {
9831         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9832                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9833                 return -EINVAL;
9834         }
9835
9836         if (!rdev->ops->tx_control_port ||
9837             !wiphy_ext_feature_isset(&rdev->wiphy,
9838                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9839                 return -EOPNOTSUPP;
9840
9841         return 0;
9842 }
9843
9844 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9845                                    struct genl_info *info,
9846                                    struct cfg80211_crypto_settings *settings,
9847                                    int cipher_limit)
9848 {
9849         memset(settings, 0, sizeof(*settings));
9850
9851         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9852
9853         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9854                 u16 proto;
9855
9856                 proto = nla_get_u16(
9857                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9858                 settings->control_port_ethertype = cpu_to_be16(proto);
9859                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9860                     proto != ETH_P_PAE)
9861                         return -EINVAL;
9862                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9863                         settings->control_port_no_encrypt = true;
9864         } else
9865                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9866
9867         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9868                 int r = validate_pae_over_nl80211(rdev, info);
9869
9870                 if (r < 0)
9871                         return r;
9872
9873                 settings->control_port_over_nl80211 = true;
9874
9875                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9876                         settings->control_port_no_preauth = true;
9877         }
9878
9879         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9880                 void *data;
9881                 int len, i;
9882
9883                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9884                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9885                 settings->n_ciphers_pairwise = len / sizeof(u32);
9886
9887                 if (len % sizeof(u32))
9888                         return -EINVAL;
9889
9890                 if (settings->n_ciphers_pairwise > cipher_limit)
9891                         return -EINVAL;
9892
9893                 memcpy(settings->ciphers_pairwise, data, len);
9894
9895                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9896                         if (!cfg80211_supported_cipher_suite(
9897                                         &rdev->wiphy,
9898                                         settings->ciphers_pairwise[i]))
9899                                 return -EINVAL;
9900         }
9901
9902         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9903                 settings->cipher_group =
9904                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9905                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9906                                                      settings->cipher_group))
9907                         return -EINVAL;
9908         }
9909
9910         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9911                 settings->wpa_versions =
9912                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9913                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9914                         return -EINVAL;
9915         }
9916
9917         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9918                 void *data;
9919                 int len;
9920
9921                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9922                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9923                 settings->n_akm_suites = len / sizeof(u32);
9924
9925                 if (len % sizeof(u32))
9926                         return -EINVAL;
9927
9928                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9929                         return -EINVAL;
9930
9931                 memcpy(settings->akm_suites, data, len);
9932         }
9933
9934         if (info->attrs[NL80211_ATTR_PMK]) {
9935                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9936                         return -EINVAL;
9937                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9938                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9939                     !wiphy_ext_feature_isset(&rdev->wiphy,
9940                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9941                         return -EINVAL;
9942                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9943         }
9944
9945         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9946                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9947                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9948                     !wiphy_ext_feature_isset(&rdev->wiphy,
9949                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9950                         return -EINVAL;
9951                 settings->sae_pwd =
9952                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9953                 settings->sae_pwd_len =
9954                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9955         }
9956
9957         if (info->attrs[NL80211_ATTR_SAE_PWE])
9958                 settings->sae_pwe =
9959                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
9960         else
9961                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
9962
9963         return 0;
9964 }
9965
9966 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9967 {
9968         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9969         struct net_device *dev = info->user_ptr[1];
9970         struct ieee80211_channel *chan;
9971         struct cfg80211_assoc_request req = {};
9972         const u8 *bssid, *ssid;
9973         int err, ssid_len = 0;
9974         u32 freq;
9975
9976         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9977             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9978                 return -EPERM;
9979
9980         if (!info->attrs[NL80211_ATTR_MAC] ||
9981             !info->attrs[NL80211_ATTR_SSID] ||
9982             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9983                 return -EINVAL;
9984
9985         if (!rdev->ops->assoc)
9986                 return -EOPNOTSUPP;
9987
9988         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9989             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9990                 return -EOPNOTSUPP;
9991
9992         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9993
9994         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9995         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9996                 freq +=
9997                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9998         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9999         if (!chan)
10000                 return -EINVAL;
10001
10002         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10003         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10004
10005         if (info->attrs[NL80211_ATTR_IE]) {
10006                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10007                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10008         }
10009
10010         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10011                 enum nl80211_mfp mfp =
10012                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10013                 if (mfp == NL80211_MFP_REQUIRED)
10014                         req.use_mfp = true;
10015                 else if (mfp != NL80211_MFP_NO)
10016                         return -EINVAL;
10017         }
10018
10019         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10020                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10021
10022         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10023                 req.flags |= ASSOC_REQ_DISABLE_HT;
10024
10025         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10026                 memcpy(&req.ht_capa_mask,
10027                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10028                        sizeof(req.ht_capa_mask));
10029
10030         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10031                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10032                         return -EINVAL;
10033                 memcpy(&req.ht_capa,
10034                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10035                        sizeof(req.ht_capa));
10036         }
10037
10038         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10039                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10040
10041         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10042                 req.flags |= ASSOC_REQ_DISABLE_HE;
10043
10044         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10045                 memcpy(&req.vht_capa_mask,
10046                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10047                        sizeof(req.vht_capa_mask));
10048
10049         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10050                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10051                         return -EINVAL;
10052                 memcpy(&req.vht_capa,
10053                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10054                        sizeof(req.vht_capa));
10055         }
10056
10057         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10058                 if (!((rdev->wiphy.features &
10059                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10060                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10061                     !wiphy_ext_feature_isset(&rdev->wiphy,
10062                                              NL80211_EXT_FEATURE_RRM))
10063                         return -EINVAL;
10064                 req.flags |= ASSOC_REQ_USE_RRM;
10065         }
10066
10067         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10068                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10069                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10070                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10071                         return -EINVAL;
10072                 req.fils_nonces =
10073                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10074         }
10075
10076         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10077                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10078                         return -EINVAL;
10079                 memcpy(&req.s1g_capa_mask,
10080                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10081                        sizeof(req.s1g_capa_mask));
10082         }
10083
10084         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10085                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10086                         return -EINVAL;
10087                 memcpy(&req.s1g_capa,
10088                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10089                        sizeof(req.s1g_capa));
10090         }
10091
10092         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10093         if (!err) {
10094                 wdev_lock(dev->ieee80211_ptr);
10095
10096                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
10097                                           ssid, ssid_len, &req);
10098
10099                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10100                         dev->ieee80211_ptr->conn_owner_nlportid =
10101                                 info->snd_portid;
10102                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10103                                bssid, ETH_ALEN);
10104                 }
10105
10106                 wdev_unlock(dev->ieee80211_ptr);
10107         }
10108
10109         return err;
10110 }
10111
10112 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10113 {
10114         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10115         struct net_device *dev = info->user_ptr[1];
10116         const u8 *ie = NULL, *bssid;
10117         int ie_len = 0, err;
10118         u16 reason_code;
10119         bool local_state_change;
10120
10121         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10122             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10123                 return -EPERM;
10124
10125         if (!info->attrs[NL80211_ATTR_MAC])
10126                 return -EINVAL;
10127
10128         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10129                 return -EINVAL;
10130
10131         if (!rdev->ops->deauth)
10132                 return -EOPNOTSUPP;
10133
10134         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10135             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10136                 return -EOPNOTSUPP;
10137
10138         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10139
10140         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10141         if (reason_code == 0) {
10142                 /* Reason Code 0 is reserved */
10143                 return -EINVAL;
10144         }
10145
10146         if (info->attrs[NL80211_ATTR_IE]) {
10147                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10148                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10149         }
10150
10151         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10152
10153         wdev_lock(dev->ieee80211_ptr);
10154         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
10155                                    local_state_change);
10156         wdev_unlock(dev->ieee80211_ptr);
10157         return err;
10158 }
10159
10160 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
10161 {
10162         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10163         struct net_device *dev = info->user_ptr[1];
10164         const u8 *ie = NULL, *bssid;
10165         int ie_len = 0, err;
10166         u16 reason_code;
10167         bool local_state_change;
10168
10169         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10170             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10171                 return -EPERM;
10172
10173         if (!info->attrs[NL80211_ATTR_MAC])
10174                 return -EINVAL;
10175
10176         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10177                 return -EINVAL;
10178
10179         if (!rdev->ops->disassoc)
10180                 return -EOPNOTSUPP;
10181
10182         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10183             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10184                 return -EOPNOTSUPP;
10185
10186         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10187
10188         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10189         if (reason_code == 0) {
10190                 /* Reason Code 0 is reserved */
10191                 return -EINVAL;
10192         }
10193
10194         if (info->attrs[NL80211_ATTR_IE]) {
10195                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10196                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10197         }
10198
10199         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10200
10201         wdev_lock(dev->ieee80211_ptr);
10202         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
10203                                      local_state_change);
10204         wdev_unlock(dev->ieee80211_ptr);
10205         return err;
10206 }
10207
10208 static bool
10209 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
10210                          int mcast_rate[NUM_NL80211_BANDS],
10211                          int rateval)
10212 {
10213         struct wiphy *wiphy = &rdev->wiphy;
10214         bool found = false;
10215         int band, i;
10216
10217         for (band = 0; band < NUM_NL80211_BANDS; band++) {
10218                 struct ieee80211_supported_band *sband;
10219
10220                 sband = wiphy->bands[band];
10221                 if (!sband)
10222                         continue;
10223
10224                 for (i = 0; i < sband->n_bitrates; i++) {
10225                         if (sband->bitrates[i].bitrate == rateval) {
10226                                 mcast_rate[band] = i + 1;
10227                                 found = true;
10228                                 break;
10229                         }
10230                 }
10231         }
10232
10233         return found;
10234 }
10235
10236 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10237 {
10238         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10239         struct net_device *dev = info->user_ptr[1];
10240         struct cfg80211_ibss_params ibss;
10241         struct wiphy *wiphy;
10242         struct cfg80211_cached_keys *connkeys = NULL;
10243         int err;
10244
10245         memset(&ibss, 0, sizeof(ibss));
10246
10247         if (!info->attrs[NL80211_ATTR_SSID] ||
10248             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10249                 return -EINVAL;
10250
10251         ibss.beacon_interval = 100;
10252
10253         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10254                 ibss.beacon_interval =
10255                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10256
10257         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10258                                            ibss.beacon_interval);
10259         if (err)
10260                 return err;
10261
10262         if (!rdev->ops->join_ibss)
10263                 return -EOPNOTSUPP;
10264
10265         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10266                 return -EOPNOTSUPP;
10267
10268         wiphy = &rdev->wiphy;
10269
10270         if (info->attrs[NL80211_ATTR_MAC]) {
10271                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10272
10273                 if (!is_valid_ether_addr(ibss.bssid))
10274                         return -EINVAL;
10275         }
10276         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10277         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10278
10279         if (info->attrs[NL80211_ATTR_IE]) {
10280                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10281                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10282         }
10283
10284         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10285         if (err)
10286                 return err;
10287
10288         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10289                                      NL80211_IFTYPE_ADHOC))
10290                 return -EINVAL;
10291
10292         switch (ibss.chandef.width) {
10293         case NL80211_CHAN_WIDTH_5:
10294         case NL80211_CHAN_WIDTH_10:
10295         case NL80211_CHAN_WIDTH_20_NOHT:
10296                 break;
10297         case NL80211_CHAN_WIDTH_20:
10298         case NL80211_CHAN_WIDTH_40:
10299                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10300                         return -EINVAL;
10301                 break;
10302         case NL80211_CHAN_WIDTH_80:
10303         case NL80211_CHAN_WIDTH_80P80:
10304         case NL80211_CHAN_WIDTH_160:
10305                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10306                         return -EINVAL;
10307                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10308                                              NL80211_EXT_FEATURE_VHT_IBSS))
10309                         return -EINVAL;
10310                 break;
10311         default:
10312                 return -EINVAL;
10313         }
10314
10315         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10316         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10317
10318         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10319                 u8 *rates =
10320                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10321                 int n_rates =
10322                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10323                 struct ieee80211_supported_band *sband =
10324                         wiphy->bands[ibss.chandef.chan->band];
10325
10326                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10327                                              &ibss.basic_rates);
10328                 if (err)
10329                         return err;
10330         }
10331
10332         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10333                 memcpy(&ibss.ht_capa_mask,
10334                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10335                        sizeof(ibss.ht_capa_mask));
10336
10337         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10338                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10339                         return -EINVAL;
10340                 memcpy(&ibss.ht_capa,
10341                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10342                        sizeof(ibss.ht_capa));
10343         }
10344
10345         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10346             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10347                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10348                 return -EINVAL;
10349
10350         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10351                 bool no_ht = false;
10352
10353                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10354                 if (IS_ERR(connkeys))
10355                         return PTR_ERR(connkeys);
10356
10357                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10358                     no_ht) {
10359                         kfree_sensitive(connkeys);
10360                         return -EINVAL;
10361                 }
10362         }
10363
10364         ibss.control_port =
10365                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10366
10367         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10368                 int r = validate_pae_over_nl80211(rdev, info);
10369
10370                 if (r < 0) {
10371                         kfree_sensitive(connkeys);
10372                         return r;
10373                 }
10374
10375                 ibss.control_port_over_nl80211 = true;
10376         }
10377
10378         ibss.userspace_handles_dfs =
10379                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10380
10381         wdev_lock(dev->ieee80211_ptr);
10382         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10383         if (err)
10384                 kfree_sensitive(connkeys);
10385         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10386                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10387         wdev_unlock(dev->ieee80211_ptr);
10388
10389         return err;
10390 }
10391
10392 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10393 {
10394         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10395         struct net_device *dev = info->user_ptr[1];
10396
10397         if (!rdev->ops->leave_ibss)
10398                 return -EOPNOTSUPP;
10399
10400         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10401                 return -EOPNOTSUPP;
10402
10403         return cfg80211_leave_ibss(rdev, dev, false);
10404 }
10405
10406 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10407 {
10408         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10409         struct net_device *dev = info->user_ptr[1];
10410         int mcast_rate[NUM_NL80211_BANDS];
10411         u32 nla_rate;
10412         int err;
10413
10414         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10415             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10416             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10417                 return -EOPNOTSUPP;
10418
10419         if (!rdev->ops->set_mcast_rate)
10420                 return -EOPNOTSUPP;
10421
10422         memset(mcast_rate, 0, sizeof(mcast_rate));
10423
10424         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10425                 return -EINVAL;
10426
10427         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10428         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10429                 return -EINVAL;
10430
10431         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10432
10433         return err;
10434 }
10435
10436 static struct sk_buff *
10437 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10438                             struct wireless_dev *wdev, int approxlen,
10439                             u32 portid, u32 seq, enum nl80211_commands cmd,
10440                             enum nl80211_attrs attr,
10441                             const struct nl80211_vendor_cmd_info *info,
10442                             gfp_t gfp)
10443 {
10444         struct sk_buff *skb;
10445         void *hdr;
10446         struct nlattr *data;
10447
10448         skb = nlmsg_new(approxlen + 100, gfp);
10449         if (!skb)
10450                 return NULL;
10451
10452         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10453         if (!hdr) {
10454                 kfree_skb(skb);
10455                 return NULL;
10456         }
10457
10458         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10459                 goto nla_put_failure;
10460
10461         if (info) {
10462                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10463                                 info->vendor_id))
10464                         goto nla_put_failure;
10465                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10466                                 info->subcmd))
10467                         goto nla_put_failure;
10468         }
10469
10470         if (wdev) {
10471                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10472                                       wdev_id(wdev), NL80211_ATTR_PAD))
10473                         goto nla_put_failure;
10474                 if (wdev->netdev &&
10475                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10476                                 wdev->netdev->ifindex))
10477                         goto nla_put_failure;
10478         }
10479
10480         data = nla_nest_start_noflag(skb, attr);
10481         if (!data)
10482                 goto nla_put_failure;
10483
10484         ((void **)skb->cb)[0] = rdev;
10485         ((void **)skb->cb)[1] = hdr;
10486         ((void **)skb->cb)[2] = data;
10487
10488         return skb;
10489
10490  nla_put_failure:
10491         kfree_skb(skb);
10492         return NULL;
10493 }
10494
10495 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10496                                            struct wireless_dev *wdev,
10497                                            enum nl80211_commands cmd,
10498                                            enum nl80211_attrs attr,
10499                                            unsigned int portid,
10500                                            int vendor_event_idx,
10501                                            int approxlen, gfp_t gfp)
10502 {
10503         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10504         const struct nl80211_vendor_cmd_info *info;
10505
10506         switch (cmd) {
10507         case NL80211_CMD_TESTMODE:
10508                 if (WARN_ON(vendor_event_idx != -1))
10509                         return NULL;
10510                 info = NULL;
10511                 break;
10512         case NL80211_CMD_VENDOR:
10513                 if (WARN_ON(vendor_event_idx < 0 ||
10514                             vendor_event_idx >= wiphy->n_vendor_events))
10515                         return NULL;
10516                 info = &wiphy->vendor_events[vendor_event_idx];
10517                 break;
10518         default:
10519                 WARN_ON(1);
10520                 return NULL;
10521         }
10522
10523         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10524                                            cmd, attr, info, gfp);
10525 }
10526 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10527
10528 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10529 {
10530         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10531         void *hdr = ((void **)skb->cb)[1];
10532         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10533         struct nlattr *data = ((void **)skb->cb)[2];
10534         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10535
10536         /* clear CB data for netlink core to own from now on */
10537         memset(skb->cb, 0, sizeof(skb->cb));
10538
10539         nla_nest_end(skb, data);
10540         genlmsg_end(skb, hdr);
10541
10542         if (nlhdr->nlmsg_pid) {
10543                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10544                                 nlhdr->nlmsg_pid);
10545         } else {
10546                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10547                         mcgrp = NL80211_MCGRP_VENDOR;
10548
10549                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10550                                         skb, 0, mcgrp, gfp);
10551         }
10552 }
10553 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10554
10555 #ifdef CONFIG_NL80211_TESTMODE
10556 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10557 {
10558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10559         struct wireless_dev *wdev;
10560         int err;
10561
10562         lockdep_assert_held(&rdev->wiphy.mtx);
10563
10564         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
10565                                           info->attrs);
10566
10567         if (!rdev->ops->testmode_cmd)
10568                 return -EOPNOTSUPP;
10569
10570         if (IS_ERR(wdev)) {
10571                 err = PTR_ERR(wdev);
10572                 if (err != -EINVAL)
10573                         return err;
10574                 wdev = NULL;
10575         } else if (wdev->wiphy != &rdev->wiphy) {
10576                 return -EINVAL;
10577         }
10578
10579         if (!info->attrs[NL80211_ATTR_TESTDATA])
10580                 return -EINVAL;
10581
10582         rdev->cur_cmd_info = info;
10583         err = rdev_testmode_cmd(rdev, wdev,
10584                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10585                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10586         rdev->cur_cmd_info = NULL;
10587
10588         return err;
10589 }
10590
10591 static int nl80211_testmode_dump(struct sk_buff *skb,
10592                                  struct netlink_callback *cb)
10593 {
10594         struct cfg80211_registered_device *rdev;
10595         struct nlattr **attrbuf = NULL;
10596         int err;
10597         long phy_idx;
10598         void *data = NULL;
10599         int data_len = 0;
10600
10601         rtnl_lock();
10602
10603         if (cb->args[0]) {
10604                 /*
10605                  * 0 is a valid index, but not valid for args[0],
10606                  * so we need to offset by 1.
10607                  */
10608                 phy_idx = cb->args[0] - 1;
10609
10610                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10611                 if (!rdev) {
10612                         err = -ENOENT;
10613                         goto out_err;
10614                 }
10615         } else {
10616                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10617                                   GFP_KERNEL);
10618                 if (!attrbuf) {
10619                         err = -ENOMEM;
10620                         goto out_err;
10621                 }
10622
10623                 err = nlmsg_parse_deprecated(cb->nlh,
10624                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10625                                              attrbuf, nl80211_fam.maxattr,
10626                                              nl80211_policy, NULL);
10627                 if (err)
10628                         goto out_err;
10629
10630                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10631                 if (IS_ERR(rdev)) {
10632                         err = PTR_ERR(rdev);
10633                         goto out_err;
10634                 }
10635                 phy_idx = rdev->wiphy_idx;
10636
10637                 if (attrbuf[NL80211_ATTR_TESTDATA])
10638                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10639         }
10640
10641         if (cb->args[1]) {
10642                 data = nla_data((void *)cb->args[1]);
10643                 data_len = nla_len((void *)cb->args[1]);
10644         }
10645
10646         if (!rdev->ops->testmode_dump) {
10647                 err = -EOPNOTSUPP;
10648                 goto out_err;
10649         }
10650
10651         while (1) {
10652                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10653                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10654                                            NL80211_CMD_TESTMODE);
10655                 struct nlattr *tmdata;
10656
10657                 if (!hdr)
10658                         break;
10659
10660                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10661                         genlmsg_cancel(skb, hdr);
10662                         break;
10663                 }
10664
10665                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10666                 if (!tmdata) {
10667                         genlmsg_cancel(skb, hdr);
10668                         break;
10669                 }
10670                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10671                 nla_nest_end(skb, tmdata);
10672
10673                 if (err == -ENOBUFS || err == -ENOENT) {
10674                         genlmsg_cancel(skb, hdr);
10675                         break;
10676                 } else if (err) {
10677                         genlmsg_cancel(skb, hdr);
10678                         goto out_err;
10679                 }
10680
10681                 genlmsg_end(skb, hdr);
10682         }
10683
10684         err = skb->len;
10685         /* see above */
10686         cb->args[0] = phy_idx + 1;
10687  out_err:
10688         kfree(attrbuf);
10689         rtnl_unlock();
10690         return err;
10691 }
10692 #endif
10693
10694 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10695 {
10696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10697         struct net_device *dev = info->user_ptr[1];
10698         struct cfg80211_connect_params connect;
10699         struct wiphy *wiphy;
10700         struct cfg80211_cached_keys *connkeys = NULL;
10701         u32 freq = 0;
10702         int err;
10703
10704         memset(&connect, 0, sizeof(connect));
10705
10706         if (!info->attrs[NL80211_ATTR_SSID] ||
10707             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10708                 return -EINVAL;
10709
10710         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10711                 connect.auth_type =
10712                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10713                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10714                                              NL80211_CMD_CONNECT))
10715                         return -EINVAL;
10716         } else
10717                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10718
10719         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10720
10721         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10722             !wiphy_ext_feature_isset(&rdev->wiphy,
10723                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10724                 return -EINVAL;
10725         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10726
10727         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10728                                       NL80211_MAX_NR_CIPHER_SUITES);
10729         if (err)
10730                 return err;
10731
10732         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10733             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10734                 return -EOPNOTSUPP;
10735
10736         wiphy = &rdev->wiphy;
10737
10738         connect.bg_scan_period = -1;
10739         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10740                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10741                 connect.bg_scan_period =
10742                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10743         }
10744
10745         if (info->attrs[NL80211_ATTR_MAC])
10746                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10747         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10748                 connect.bssid_hint =
10749                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10750         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10751         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10752
10753         if (info->attrs[NL80211_ATTR_IE]) {
10754                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10755                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10756         }
10757
10758         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10759                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10760                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10761                     !wiphy_ext_feature_isset(&rdev->wiphy,
10762                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10763                         return -EOPNOTSUPP;
10764         } else {
10765                 connect.mfp = NL80211_MFP_NO;
10766         }
10767
10768         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10769                 connect.prev_bssid =
10770                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10771
10772         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10773                 freq = MHZ_TO_KHZ(nla_get_u32(
10774                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10775         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10776                 freq +=
10777                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10778
10779         if (freq) {
10780                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10781                 if (!connect.channel)
10782                         return -EINVAL;
10783         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10784                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10785                 freq = MHZ_TO_KHZ(freq);
10786                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10787                 if (!connect.channel_hint)
10788                         return -EINVAL;
10789         }
10790
10791         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10792                 connect.edmg.channels =
10793                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10794
10795                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10796                         connect.edmg.bw_config =
10797                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10798         }
10799
10800         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10801                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10802                 if (IS_ERR(connkeys))
10803                         return PTR_ERR(connkeys);
10804         }
10805
10806         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10807                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10808
10809         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10810                 memcpy(&connect.ht_capa_mask,
10811                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10812                        sizeof(connect.ht_capa_mask));
10813
10814         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10815                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10816                         kfree_sensitive(connkeys);
10817                         return -EINVAL;
10818                 }
10819                 memcpy(&connect.ht_capa,
10820                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10821                        sizeof(connect.ht_capa));
10822         }
10823
10824         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10825                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10826
10827         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10828                 connect.flags |= ASSOC_REQ_DISABLE_HE;
10829
10830         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10831                 memcpy(&connect.vht_capa_mask,
10832                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10833                        sizeof(connect.vht_capa_mask));
10834
10835         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10836                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10837                         kfree_sensitive(connkeys);
10838                         return -EINVAL;
10839                 }
10840                 memcpy(&connect.vht_capa,
10841                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10842                        sizeof(connect.vht_capa));
10843         }
10844
10845         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10846                 if (!((rdev->wiphy.features &
10847                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10848                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10849                     !wiphy_ext_feature_isset(&rdev->wiphy,
10850                                              NL80211_EXT_FEATURE_RRM)) {
10851                         kfree_sensitive(connkeys);
10852                         return -EINVAL;
10853                 }
10854                 connect.flags |= ASSOC_REQ_USE_RRM;
10855         }
10856
10857         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10858         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10859                 kfree_sensitive(connkeys);
10860                 return -EOPNOTSUPP;
10861         }
10862
10863         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10864                 /* bss selection makes no sense if bssid is set */
10865                 if (connect.bssid) {
10866                         kfree_sensitive(connkeys);
10867                         return -EINVAL;
10868                 }
10869
10870                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10871                                        wiphy, &connect.bss_select);
10872                 if (err) {
10873                         kfree_sensitive(connkeys);
10874                         return err;
10875                 }
10876         }
10877
10878         if (wiphy_ext_feature_isset(&rdev->wiphy,
10879                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10880             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10881             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10882             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10883             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10884                 connect.fils_erp_username =
10885                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10886                 connect.fils_erp_username_len =
10887                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10888                 connect.fils_erp_realm =
10889                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10890                 connect.fils_erp_realm_len =
10891                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10892                 connect.fils_erp_next_seq_num =
10893                         nla_get_u16(
10894                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10895                 connect.fils_erp_rrk =
10896                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10897                 connect.fils_erp_rrk_len =
10898                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10899         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10900                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10901                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10902                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10903                 kfree_sensitive(connkeys);
10904                 return -EINVAL;
10905         }
10906
10907         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10908                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10909                         kfree_sensitive(connkeys);
10910                         GENL_SET_ERR_MSG(info,
10911                                          "external auth requires connection ownership");
10912                         return -EINVAL;
10913                 }
10914                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10915         }
10916
10917         wdev_lock(dev->ieee80211_ptr);
10918
10919         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10920                                connect.prev_bssid);
10921         if (err)
10922                 kfree_sensitive(connkeys);
10923
10924         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10925                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10926                 if (connect.bssid)
10927                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10928                                connect.bssid, ETH_ALEN);
10929                 else
10930                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10931         }
10932
10933         wdev_unlock(dev->ieee80211_ptr);
10934
10935         return err;
10936 }
10937
10938 static int nl80211_update_connect_params(struct sk_buff *skb,
10939                                          struct genl_info *info)
10940 {
10941         struct cfg80211_connect_params connect = {};
10942         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10943         struct net_device *dev = info->user_ptr[1];
10944         struct wireless_dev *wdev = dev->ieee80211_ptr;
10945         bool fils_sk_offload;
10946         u32 auth_type;
10947         u32 changed = 0;
10948         int ret;
10949
10950         if (!rdev->ops->update_connect_params)
10951                 return -EOPNOTSUPP;
10952
10953         if (info->attrs[NL80211_ATTR_IE]) {
10954                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10955                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10956                 changed |= UPDATE_ASSOC_IES;
10957         }
10958
10959         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10960                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10961
10962         /*
10963          * when driver supports fils-sk offload all attributes must be
10964          * provided. So the else covers "fils-sk-not-all" and
10965          * "no-fils-sk-any".
10966          */
10967         if (fils_sk_offload &&
10968             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10969             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10970             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10971             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10972                 connect.fils_erp_username =
10973                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10974                 connect.fils_erp_username_len =
10975                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10976                 connect.fils_erp_realm =
10977                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10978                 connect.fils_erp_realm_len =
10979                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10980                 connect.fils_erp_next_seq_num =
10981                         nla_get_u16(
10982                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10983                 connect.fils_erp_rrk =
10984                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10985                 connect.fils_erp_rrk_len =
10986                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10987                 changed |= UPDATE_FILS_ERP_INFO;
10988         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10989                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10990                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10991                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10992                 return -EINVAL;
10993         }
10994
10995         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10996                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10997                 if (!nl80211_valid_auth_type(rdev, auth_type,
10998                                              NL80211_CMD_CONNECT))
10999                         return -EINVAL;
11000
11001                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11002                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11003                         return -EINVAL;
11004
11005                 connect.auth_type = auth_type;
11006                 changed |= UPDATE_AUTH_TYPE;
11007         }
11008
11009         wdev_lock(dev->ieee80211_ptr);
11010         if (!wdev->current_bss)
11011                 ret = -ENOLINK;
11012         else
11013                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11014         wdev_unlock(dev->ieee80211_ptr);
11015
11016         return ret;
11017 }
11018
11019 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11020 {
11021         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11022         struct net_device *dev = info->user_ptr[1];
11023         u16 reason;
11024         int ret;
11025
11026         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11027             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11028                 return -EPERM;
11029
11030         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11031                 reason = WLAN_REASON_DEAUTH_LEAVING;
11032         else
11033                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11034
11035         if (reason == 0)
11036                 return -EINVAL;
11037
11038         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11039             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11040                 return -EOPNOTSUPP;
11041
11042         wdev_lock(dev->ieee80211_ptr);
11043         ret = cfg80211_disconnect(rdev, dev, reason, true);
11044         wdev_unlock(dev->ieee80211_ptr);
11045         return ret;
11046 }
11047
11048 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11049 {
11050         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11051         struct net *net;
11052         int err;
11053
11054         if (info->attrs[NL80211_ATTR_PID]) {
11055                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11056
11057                 net = get_net_ns_by_pid(pid);
11058         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11059                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11060
11061                 net = get_net_ns_by_fd(fd);
11062         } else {
11063                 return -EINVAL;
11064         }
11065
11066         if (IS_ERR(net))
11067                 return PTR_ERR(net);
11068
11069         err = 0;
11070
11071         /* check if anything to do */
11072         if (!net_eq(wiphy_net(&rdev->wiphy), net))
11073                 err = cfg80211_switch_netns(rdev, net);
11074
11075         put_net(net);
11076         return err;
11077 }
11078
11079 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11080 {
11081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11082         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11083                         struct cfg80211_pmksa *pmksa) = NULL;
11084         struct net_device *dev = info->user_ptr[1];
11085         struct cfg80211_pmksa pmksa;
11086
11087         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11088
11089         if (!info->attrs[NL80211_ATTR_PMKID])
11090                 return -EINVAL;
11091
11092         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11093
11094         if (info->attrs[NL80211_ATTR_MAC]) {
11095                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11096         } else if (info->attrs[NL80211_ATTR_SSID] &&
11097                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11098                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11099                     info->attrs[NL80211_ATTR_PMK])) {
11100                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11101                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11102                 pmksa.cache_id =
11103                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11104         } else {
11105                 return -EINVAL;
11106         }
11107         if (info->attrs[NL80211_ATTR_PMK]) {
11108                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11109                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11110         }
11111
11112         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11113                 pmksa.pmk_lifetime =
11114                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11115
11116         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11117                 pmksa.pmk_reauth_threshold =
11118                         nla_get_u8(
11119                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11120
11121         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11122             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
11123             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
11124               wiphy_ext_feature_isset(&rdev->wiphy,
11125                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
11126                 return -EOPNOTSUPP;
11127
11128         switch (info->genlhdr->cmd) {
11129         case NL80211_CMD_SET_PMKSA:
11130                 rdev_ops = rdev->ops->set_pmksa;
11131                 break;
11132         case NL80211_CMD_DEL_PMKSA:
11133                 rdev_ops = rdev->ops->del_pmksa;
11134                 break;
11135         default:
11136                 WARN_ON(1);
11137                 break;
11138         }
11139
11140         if (!rdev_ops)
11141                 return -EOPNOTSUPP;
11142
11143         return rdev_ops(&rdev->wiphy, dev, &pmksa);
11144 }
11145
11146 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
11147 {
11148         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11149         struct net_device *dev = info->user_ptr[1];
11150
11151         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11152             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11153                 return -EOPNOTSUPP;
11154
11155         if (!rdev->ops->flush_pmksa)
11156                 return -EOPNOTSUPP;
11157
11158         return rdev_flush_pmksa(rdev, dev);
11159 }
11160
11161 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
11162 {
11163         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11164         struct net_device *dev = info->user_ptr[1];
11165         u8 action_code, dialog_token;
11166         u32 peer_capability = 0;
11167         u16 status_code;
11168         u8 *peer;
11169         bool initiator;
11170
11171         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11172             !rdev->ops->tdls_mgmt)
11173                 return -EOPNOTSUPP;
11174
11175         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
11176             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
11177             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
11178             !info->attrs[NL80211_ATTR_IE] ||
11179             !info->attrs[NL80211_ATTR_MAC])
11180                 return -EINVAL;
11181
11182         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11183         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
11184         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
11185         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
11186         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
11187         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
11188                 peer_capability =
11189                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
11190
11191         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
11192                               dialog_token, status_code, peer_capability,
11193                               initiator,
11194                               nla_data(info->attrs[NL80211_ATTR_IE]),
11195                               nla_len(info->attrs[NL80211_ATTR_IE]));
11196 }
11197
11198 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
11199 {
11200         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11201         struct net_device *dev = info->user_ptr[1];
11202         enum nl80211_tdls_operation operation;
11203         u8 *peer;
11204
11205         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11206             !rdev->ops->tdls_oper)
11207                 return -EOPNOTSUPP;
11208
11209         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
11210             !info->attrs[NL80211_ATTR_MAC])
11211                 return -EINVAL;
11212
11213         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
11214         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11215
11216         return rdev_tdls_oper(rdev, dev, peer, operation);
11217 }
11218
11219 static int nl80211_remain_on_channel(struct sk_buff *skb,
11220                                      struct genl_info *info)
11221 {
11222         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11223         struct wireless_dev *wdev = info->user_ptr[1];
11224         struct cfg80211_chan_def chandef;
11225         const struct cfg80211_chan_def *compat_chandef;
11226         struct sk_buff *msg;
11227         void *hdr;
11228         u64 cookie;
11229         u32 duration;
11230         int err;
11231
11232         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11233             !info->attrs[NL80211_ATTR_DURATION])
11234                 return -EINVAL;
11235
11236         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11237
11238         if (!rdev->ops->remain_on_channel ||
11239             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11240                 return -EOPNOTSUPP;
11241
11242         /*
11243          * We should be on that channel for at least a minimum amount of
11244          * time (10ms) but no longer than the driver supports.
11245          */
11246         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11247             duration > rdev->wiphy.max_remain_on_channel_duration)
11248                 return -EINVAL;
11249
11250         err = nl80211_parse_chandef(rdev, info, &chandef);
11251         if (err)
11252                 return err;
11253
11254         wdev_lock(wdev);
11255         if (!cfg80211_off_channel_oper_allowed(wdev) &&
11256             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11257                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11258                                                              &chandef);
11259                 if (compat_chandef != &chandef) {
11260                         wdev_unlock(wdev);
11261                         return -EBUSY;
11262                 }
11263         }
11264         wdev_unlock(wdev);
11265
11266         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11267         if (!msg)
11268                 return -ENOMEM;
11269
11270         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11271                              NL80211_CMD_REMAIN_ON_CHANNEL);
11272         if (!hdr) {
11273                 err = -ENOBUFS;
11274                 goto free_msg;
11275         }
11276
11277         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11278                                      duration, &cookie);
11279
11280         if (err)
11281                 goto free_msg;
11282
11283         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11284                               NL80211_ATTR_PAD))
11285                 goto nla_put_failure;
11286
11287         genlmsg_end(msg, hdr);
11288
11289         return genlmsg_reply(msg, info);
11290
11291  nla_put_failure:
11292         err = -ENOBUFS;
11293  free_msg:
11294         nlmsg_free(msg);
11295         return err;
11296 }
11297
11298 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11299                                             struct genl_info *info)
11300 {
11301         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11302         struct wireless_dev *wdev = info->user_ptr[1];
11303         u64 cookie;
11304
11305         if (!info->attrs[NL80211_ATTR_COOKIE])
11306                 return -EINVAL;
11307
11308         if (!rdev->ops->cancel_remain_on_channel)
11309                 return -EOPNOTSUPP;
11310
11311         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11312
11313         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11314 }
11315
11316 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11317                                        struct genl_info *info)
11318 {
11319         struct cfg80211_bitrate_mask mask;
11320         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11321         struct net_device *dev = info->user_ptr[1];
11322         int err;
11323
11324         if (!rdev->ops->set_bitrate_mask)
11325                 return -EOPNOTSUPP;
11326
11327         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11328                                             NL80211_ATTR_TX_RATES, &mask,
11329                                             dev, true);
11330         if (err)
11331                 return err;
11332
11333         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11334 }
11335
11336 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11337 {
11338         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11339         struct wireless_dev *wdev = info->user_ptr[1];
11340         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11341
11342         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11343                 return -EINVAL;
11344
11345         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11346                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11347
11348         switch (wdev->iftype) {
11349         case NL80211_IFTYPE_STATION:
11350         case NL80211_IFTYPE_ADHOC:
11351         case NL80211_IFTYPE_P2P_CLIENT:
11352         case NL80211_IFTYPE_AP:
11353         case NL80211_IFTYPE_AP_VLAN:
11354         case NL80211_IFTYPE_MESH_POINT:
11355         case NL80211_IFTYPE_P2P_GO:
11356         case NL80211_IFTYPE_P2P_DEVICE:
11357                 break;
11358         case NL80211_IFTYPE_NAN:
11359         default:
11360                 return -EOPNOTSUPP;
11361         }
11362
11363         /* not much point in registering if we can't reply */
11364         if (!rdev->ops->mgmt_tx)
11365                 return -EOPNOTSUPP;
11366
11367         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11368             !wiphy_ext_feature_isset(&rdev->wiphy,
11369                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11370                 GENL_SET_ERR_MSG(info,
11371                                  "multicast RX registrations are not supported");
11372                 return -EOPNOTSUPP;
11373         }
11374
11375         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11376                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11377                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11378                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11379                                            info->extack);
11380 }
11381
11382 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11383 {
11384         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11385         struct wireless_dev *wdev = info->user_ptr[1];
11386         struct cfg80211_chan_def chandef;
11387         int err;
11388         void *hdr = NULL;
11389         u64 cookie;
11390         struct sk_buff *msg = NULL;
11391         struct cfg80211_mgmt_tx_params params = {
11392                 .dont_wait_for_ack =
11393                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11394         };
11395
11396         if (!info->attrs[NL80211_ATTR_FRAME])
11397                 return -EINVAL;
11398
11399         if (!rdev->ops->mgmt_tx)
11400                 return -EOPNOTSUPP;
11401
11402         switch (wdev->iftype) {
11403         case NL80211_IFTYPE_P2P_DEVICE:
11404                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11405                         return -EINVAL;
11406                 break;
11407         case NL80211_IFTYPE_STATION:
11408         case NL80211_IFTYPE_ADHOC:
11409         case NL80211_IFTYPE_P2P_CLIENT:
11410         case NL80211_IFTYPE_AP:
11411         case NL80211_IFTYPE_AP_VLAN:
11412         case NL80211_IFTYPE_MESH_POINT:
11413         case NL80211_IFTYPE_P2P_GO:
11414                 break;
11415         case NL80211_IFTYPE_NAN:
11416         default:
11417                 return -EOPNOTSUPP;
11418         }
11419
11420         if (info->attrs[NL80211_ATTR_DURATION]) {
11421                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11422                         return -EINVAL;
11423                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11424
11425                 /*
11426                  * We should wait on the channel for at least a minimum amount
11427                  * of time (10ms) but no longer than the driver supports.
11428                  */
11429                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11430                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
11431                         return -EINVAL;
11432         }
11433
11434         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11435
11436         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11437                 return -EINVAL;
11438
11439         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11440
11441         /* get the channel if any has been specified, otherwise pass NULL to
11442          * the driver. The latter will use the current one
11443          */
11444         chandef.chan = NULL;
11445         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11446                 err = nl80211_parse_chandef(rdev, info, &chandef);
11447                 if (err)
11448                         return err;
11449         }
11450
11451         if (!chandef.chan && params.offchan)
11452                 return -EINVAL;
11453
11454         wdev_lock(wdev);
11455         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11456                 wdev_unlock(wdev);
11457                 return -EBUSY;
11458         }
11459         wdev_unlock(wdev);
11460
11461         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11462         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11463
11464         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11465                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11466                 int i;
11467
11468                 if (len % sizeof(u16))
11469                         return -EINVAL;
11470
11471                 params.n_csa_offsets = len / sizeof(u16);
11472                 params.csa_offsets =
11473                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11474
11475                 /* check that all the offsets fit the frame */
11476                 for (i = 0; i < params.n_csa_offsets; i++) {
11477                         if (params.csa_offsets[i] >= params.len)
11478                                 return -EINVAL;
11479                 }
11480         }
11481
11482         if (!params.dont_wait_for_ack) {
11483                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11484                 if (!msg)
11485                         return -ENOMEM;
11486
11487                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11488                                      NL80211_CMD_FRAME);
11489                 if (!hdr) {
11490                         err = -ENOBUFS;
11491                         goto free_msg;
11492                 }
11493         }
11494
11495         params.chan = chandef.chan;
11496         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
11497         if (err)
11498                 goto free_msg;
11499
11500         if (msg) {
11501                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11502                                       NL80211_ATTR_PAD))
11503                         goto nla_put_failure;
11504
11505                 genlmsg_end(msg, hdr);
11506                 return genlmsg_reply(msg, info);
11507         }
11508
11509         return 0;
11510
11511  nla_put_failure:
11512         err = -ENOBUFS;
11513  free_msg:
11514         nlmsg_free(msg);
11515         return err;
11516 }
11517
11518 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11519 {
11520         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11521         struct wireless_dev *wdev = info->user_ptr[1];
11522         u64 cookie;
11523
11524         if (!info->attrs[NL80211_ATTR_COOKIE])
11525                 return -EINVAL;
11526
11527         if (!rdev->ops->mgmt_tx_cancel_wait)
11528                 return -EOPNOTSUPP;
11529
11530         switch (wdev->iftype) {
11531         case NL80211_IFTYPE_STATION:
11532         case NL80211_IFTYPE_ADHOC:
11533         case NL80211_IFTYPE_P2P_CLIENT:
11534         case NL80211_IFTYPE_AP:
11535         case NL80211_IFTYPE_AP_VLAN:
11536         case NL80211_IFTYPE_P2P_GO:
11537         case NL80211_IFTYPE_P2P_DEVICE:
11538                 break;
11539         case NL80211_IFTYPE_NAN:
11540         default:
11541                 return -EOPNOTSUPP;
11542         }
11543
11544         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11545
11546         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11547 }
11548
11549 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11550 {
11551         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11552         struct wireless_dev *wdev;
11553         struct net_device *dev = info->user_ptr[1];
11554         u8 ps_state;
11555         bool state;
11556         int err;
11557
11558         if (!info->attrs[NL80211_ATTR_PS_STATE])
11559                 return -EINVAL;
11560
11561         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11562
11563         wdev = dev->ieee80211_ptr;
11564
11565         if (!rdev->ops->set_power_mgmt)
11566                 return -EOPNOTSUPP;
11567
11568         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11569
11570         if (state == wdev->ps)
11571                 return 0;
11572
11573         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11574         if (!err)
11575                 wdev->ps = state;
11576         return err;
11577 }
11578
11579 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11580 {
11581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11582         enum nl80211_ps_state ps_state;
11583         struct wireless_dev *wdev;
11584         struct net_device *dev = info->user_ptr[1];
11585         struct sk_buff *msg;
11586         void *hdr;
11587         int err;
11588
11589         wdev = dev->ieee80211_ptr;
11590
11591         if (!rdev->ops->set_power_mgmt)
11592                 return -EOPNOTSUPP;
11593
11594         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11595         if (!msg)
11596                 return -ENOMEM;
11597
11598         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11599                              NL80211_CMD_GET_POWER_SAVE);
11600         if (!hdr) {
11601                 err = -ENOBUFS;
11602                 goto free_msg;
11603         }
11604
11605         if (wdev->ps)
11606                 ps_state = NL80211_PS_ENABLED;
11607         else
11608                 ps_state = NL80211_PS_DISABLED;
11609
11610         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11611                 goto nla_put_failure;
11612
11613         genlmsg_end(msg, hdr);
11614         return genlmsg_reply(msg, info);
11615
11616  nla_put_failure:
11617         err = -ENOBUFS;
11618  free_msg:
11619         nlmsg_free(msg);
11620         return err;
11621 }
11622
11623 static const struct nla_policy
11624 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11625         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11626         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11627         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11628         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11629         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11630         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11631         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11632 };
11633
11634 static int nl80211_set_cqm_txe(struct genl_info *info,
11635                                u32 rate, u32 pkts, u32 intvl)
11636 {
11637         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11638         struct net_device *dev = info->user_ptr[1];
11639         struct wireless_dev *wdev = dev->ieee80211_ptr;
11640
11641         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11642                 return -EINVAL;
11643
11644         if (!rdev->ops->set_cqm_txe_config)
11645                 return -EOPNOTSUPP;
11646
11647         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11648             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11649                 return -EOPNOTSUPP;
11650
11651         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11652 }
11653
11654 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11655                                     struct net_device *dev)
11656 {
11657         struct wireless_dev *wdev = dev->ieee80211_ptr;
11658         s32 last, low, high;
11659         u32 hyst;
11660         int i, n, low_index;
11661         int err;
11662
11663         /* RSSI reporting disabled? */
11664         if (!wdev->cqm_config)
11665                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11666
11667         /*
11668          * Obtain current RSSI value if possible, if not and no RSSI threshold
11669          * event has been received yet, we should receive an event after a
11670          * connection is established and enough beacons received to calculate
11671          * the average.
11672          */
11673         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11674             rdev->ops->get_station) {
11675                 struct station_info sinfo = {};
11676                 u8 *mac_addr;
11677
11678                 mac_addr = wdev->current_bss->pub.bssid;
11679
11680                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11681                 if (err)
11682                         return err;
11683
11684                 cfg80211_sinfo_release_content(&sinfo);
11685                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11686                         wdev->cqm_config->last_rssi_event_value =
11687                                 (s8) sinfo.rx_beacon_signal_avg;
11688         }
11689
11690         last = wdev->cqm_config->last_rssi_event_value;
11691         hyst = wdev->cqm_config->rssi_hyst;
11692         n = wdev->cqm_config->n_rssi_thresholds;
11693
11694         for (i = 0; i < n; i++) {
11695                 i = array_index_nospec(i, n);
11696                 if (last < wdev->cqm_config->rssi_thresholds[i])
11697                         break;
11698         }
11699
11700         low_index = i - 1;
11701         if (low_index >= 0) {
11702                 low_index = array_index_nospec(low_index, n);
11703                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11704         } else {
11705                 low = S32_MIN;
11706         }
11707         if (i < n) {
11708                 i = array_index_nospec(i, n);
11709                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11710         } else {
11711                 high = S32_MAX;
11712         }
11713
11714         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11715 }
11716
11717 static int nl80211_set_cqm_rssi(struct genl_info *info,
11718                                 const s32 *thresholds, int n_thresholds,
11719                                 u32 hysteresis)
11720 {
11721         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11722         struct net_device *dev = info->user_ptr[1];
11723         struct wireless_dev *wdev = dev->ieee80211_ptr;
11724         int i, err;
11725         s32 prev = S32_MIN;
11726
11727         /* Check all values negative and sorted */
11728         for (i = 0; i < n_thresholds; i++) {
11729                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11730                         return -EINVAL;
11731
11732                 prev = thresholds[i];
11733         }
11734
11735         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11736             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11737                 return -EOPNOTSUPP;
11738
11739         wdev_lock(wdev);
11740         cfg80211_cqm_config_free(wdev);
11741         wdev_unlock(wdev);
11742
11743         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11744                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11745                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11746
11747                 return rdev_set_cqm_rssi_config(rdev, dev,
11748                                                 thresholds[0], hysteresis);
11749         }
11750
11751         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11752                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11753                 return -EOPNOTSUPP;
11754
11755         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11756                 n_thresholds = 0;
11757
11758         wdev_lock(wdev);
11759         if (n_thresholds) {
11760                 struct cfg80211_cqm_config *cqm_config;
11761
11762                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11763                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11764                 if (!cqm_config) {
11765                         err = -ENOMEM;
11766                         goto unlock;
11767                 }
11768
11769                 cqm_config->rssi_hyst = hysteresis;
11770                 cqm_config->n_rssi_thresholds = n_thresholds;
11771                 memcpy(cqm_config->rssi_thresholds, thresholds,
11772                        n_thresholds * sizeof(s32));
11773
11774                 wdev->cqm_config = cqm_config;
11775         }
11776
11777         err = cfg80211_cqm_rssi_update(rdev, dev);
11778
11779 unlock:
11780         wdev_unlock(wdev);
11781
11782         return err;
11783 }
11784
11785 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11786 {
11787         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11788         struct nlattr *cqm;
11789         int err;
11790
11791         cqm = info->attrs[NL80211_ATTR_CQM];
11792         if (!cqm)
11793                 return -EINVAL;
11794
11795         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11796                                           nl80211_attr_cqm_policy,
11797                                           info->extack);
11798         if (err)
11799                 return err;
11800
11801         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11802             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11803                 const s32 *thresholds =
11804                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11805                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11806                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11807
11808                 if (len % 4)
11809                         return -EINVAL;
11810
11811                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11812                                             hysteresis);
11813         }
11814
11815         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11816             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11817             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11818                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11819                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11820                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11821
11822                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11823         }
11824
11825         return -EINVAL;
11826 }
11827
11828 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11829 {
11830         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11831         struct net_device *dev = info->user_ptr[1];
11832         struct ocb_setup setup = {};
11833         int err;
11834
11835         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11836         if (err)
11837                 return err;
11838
11839         return cfg80211_join_ocb(rdev, dev, &setup);
11840 }
11841
11842 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11843 {
11844         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11845         struct net_device *dev = info->user_ptr[1];
11846
11847         return cfg80211_leave_ocb(rdev, dev);
11848 }
11849
11850 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11851 {
11852         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11853         struct net_device *dev = info->user_ptr[1];
11854         struct mesh_config cfg;
11855         struct mesh_setup setup;
11856         int err;
11857
11858         /* start with default */
11859         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11860         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11861
11862         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11863                 /* and parse parameters if given */
11864                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11865                 if (err)
11866                         return err;
11867         }
11868
11869         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11870             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11871                 return -EINVAL;
11872
11873         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11874         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11875
11876         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11877             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11878                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11879                         return -EINVAL;
11880
11881         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11882                 setup.beacon_interval =
11883                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11884
11885                 err = cfg80211_validate_beacon_int(rdev,
11886                                                    NL80211_IFTYPE_MESH_POINT,
11887                                                    setup.beacon_interval);
11888                 if (err)
11889                         return err;
11890         }
11891
11892         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11893                 setup.dtim_period =
11894                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11895                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11896                         return -EINVAL;
11897         }
11898
11899         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11900                 /* parse additional setup parameters if given */
11901                 err = nl80211_parse_mesh_setup(info, &setup);
11902                 if (err)
11903                         return err;
11904         }
11905
11906         if (setup.user_mpm)
11907                 cfg.auto_open_plinks = false;
11908
11909         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11910                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11911                 if (err)
11912                         return err;
11913         } else {
11914                 /* __cfg80211_join_mesh() will sort it out */
11915                 setup.chandef.chan = NULL;
11916         }
11917
11918         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11919                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11920                 int n_rates =
11921                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11922                 struct ieee80211_supported_band *sband;
11923
11924                 if (!setup.chandef.chan)
11925                         return -EINVAL;
11926
11927                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11928
11929                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11930                                              &setup.basic_rates);
11931                 if (err)
11932                         return err;
11933         }
11934
11935         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11936                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11937                                                     NL80211_ATTR_TX_RATES,
11938                                                     &setup.beacon_rate,
11939                                                     dev, false);
11940                 if (err)
11941                         return err;
11942
11943                 if (!setup.chandef.chan)
11944                         return -EINVAL;
11945
11946                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11947                                               &setup.beacon_rate);
11948                 if (err)
11949                         return err;
11950         }
11951
11952         setup.userspace_handles_dfs =
11953                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11954
11955         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11956                 int r = validate_pae_over_nl80211(rdev, info);
11957
11958                 if (r < 0)
11959                         return r;
11960
11961                 setup.control_port_over_nl80211 = true;
11962         }
11963
11964         wdev_lock(dev->ieee80211_ptr);
11965         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11966         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11967                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11968         wdev_unlock(dev->ieee80211_ptr);
11969
11970         return err;
11971 }
11972
11973 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11974 {
11975         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11976         struct net_device *dev = info->user_ptr[1];
11977
11978         return cfg80211_leave_mesh(rdev, dev);
11979 }
11980
11981 #ifdef CONFIG_PM
11982 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11983                                         struct cfg80211_registered_device *rdev)
11984 {
11985         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11986         struct nlattr *nl_pats, *nl_pat;
11987         int i, pat_len;
11988
11989         if (!wowlan->n_patterns)
11990                 return 0;
11991
11992         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11993         if (!nl_pats)
11994                 return -ENOBUFS;
11995
11996         for (i = 0; i < wowlan->n_patterns; i++) {
11997                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11998                 if (!nl_pat)
11999                         return -ENOBUFS;
12000                 pat_len = wowlan->patterns[i].pattern_len;
12001                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
12002                             wowlan->patterns[i].mask) ||
12003                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12004                             wowlan->patterns[i].pattern) ||
12005                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12006                                 wowlan->patterns[i].pkt_offset))
12007                         return -ENOBUFS;
12008                 nla_nest_end(msg, nl_pat);
12009         }
12010         nla_nest_end(msg, nl_pats);
12011
12012         return 0;
12013 }
12014
12015 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
12016                                    struct cfg80211_wowlan_tcp *tcp)
12017 {
12018         struct nlattr *nl_tcp;
12019
12020         if (!tcp)
12021                 return 0;
12022
12023         nl_tcp = nla_nest_start_noflag(msg,
12024                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12025         if (!nl_tcp)
12026                 return -ENOBUFS;
12027
12028         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12029             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12030             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12031             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12032             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12033             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12034                     tcp->payload_len, tcp->payload) ||
12035             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12036                         tcp->data_interval) ||
12037             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12038                     tcp->wake_len, tcp->wake_data) ||
12039             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12040                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12041                 return -ENOBUFS;
12042
12043         if (tcp->payload_seq.len &&
12044             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12045                     sizeof(tcp->payload_seq), &tcp->payload_seq))
12046                 return -ENOBUFS;
12047
12048         if (tcp->payload_tok.len &&
12049             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12050                     sizeof(tcp->payload_tok) + tcp->tokens_size,
12051                     &tcp->payload_tok))
12052                 return -ENOBUFS;
12053
12054         nla_nest_end(msg, nl_tcp);
12055
12056         return 0;
12057 }
12058
12059 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12060                                   struct cfg80211_sched_scan_request *req)
12061 {
12062         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12063         int i;
12064
12065         if (!req)
12066                 return 0;
12067
12068         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12069         if (!nd)
12070                 return -ENOBUFS;
12071
12072         if (req->n_scan_plans == 1 &&
12073             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12074                         req->scan_plans[0].interval * 1000))
12075                 return -ENOBUFS;
12076
12077         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12078                 return -ENOBUFS;
12079
12080         if (req->relative_rssi_set) {
12081                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12082
12083                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12084                                req->relative_rssi))
12085                         return -ENOBUFS;
12086
12087                 rssi_adjust.band = req->rssi_adjust.band;
12088                 rssi_adjust.delta = req->rssi_adjust.delta;
12089                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
12090                             sizeof(rssi_adjust), &rssi_adjust))
12091                         return -ENOBUFS;
12092         }
12093
12094         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12095         if (!freqs)
12096                 return -ENOBUFS;
12097
12098         for (i = 0; i < req->n_channels; i++) {
12099                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12100                         return -ENOBUFS;
12101         }
12102
12103         nla_nest_end(msg, freqs);
12104
12105         if (req->n_match_sets) {
12106                 matches = nla_nest_start_noflag(msg,
12107                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
12108                 if (!matches)
12109                         return -ENOBUFS;
12110
12111                 for (i = 0; i < req->n_match_sets; i++) {
12112                         match = nla_nest_start_noflag(msg, i);
12113                         if (!match)
12114                                 return -ENOBUFS;
12115
12116                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
12117                                     req->match_sets[i].ssid.ssid_len,
12118                                     req->match_sets[i].ssid.ssid))
12119                                 return -ENOBUFS;
12120                         nla_nest_end(msg, match);
12121                 }
12122                 nla_nest_end(msg, matches);
12123         }
12124
12125         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
12126         if (!scan_plans)
12127                 return -ENOBUFS;
12128
12129         for (i = 0; i < req->n_scan_plans; i++) {
12130                 scan_plan = nla_nest_start_noflag(msg, i + 1);
12131                 if (!scan_plan)
12132                         return -ENOBUFS;
12133
12134                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
12135                                 req->scan_plans[i].interval) ||
12136                     (req->scan_plans[i].iterations &&
12137                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
12138                                  req->scan_plans[i].iterations)))
12139                         return -ENOBUFS;
12140                 nla_nest_end(msg, scan_plan);
12141         }
12142         nla_nest_end(msg, scan_plans);
12143
12144         nla_nest_end(msg, nd);
12145
12146         return 0;
12147 }
12148
12149 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
12150 {
12151         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12152         struct sk_buff *msg;
12153         void *hdr;
12154         u32 size = NLMSG_DEFAULT_SIZE;
12155
12156         if (!rdev->wiphy.wowlan)
12157                 return -EOPNOTSUPP;
12158
12159         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
12160                 /* adjust size to have room for all the data */
12161                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
12162                         rdev->wiphy.wowlan_config->tcp->payload_len +
12163                         rdev->wiphy.wowlan_config->tcp->wake_len +
12164                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
12165         }
12166
12167         msg = nlmsg_new(size, GFP_KERNEL);
12168         if (!msg)
12169                 return -ENOMEM;
12170
12171         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12172                              NL80211_CMD_GET_WOWLAN);
12173         if (!hdr)
12174                 goto nla_put_failure;
12175
12176         if (rdev->wiphy.wowlan_config) {
12177                 struct nlattr *nl_wowlan;
12178
12179                 nl_wowlan = nla_nest_start_noflag(msg,
12180                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
12181                 if (!nl_wowlan)
12182                         goto nla_put_failure;
12183
12184                 if ((rdev->wiphy.wowlan_config->any &&
12185                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
12186                     (rdev->wiphy.wowlan_config->disconnect &&
12187                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
12188                     (rdev->wiphy.wowlan_config->magic_pkt &&
12189                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
12190                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
12191                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
12192                     (rdev->wiphy.wowlan_config->eap_identity_req &&
12193                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
12194                     (rdev->wiphy.wowlan_config->four_way_handshake &&
12195                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
12196                     (rdev->wiphy.wowlan_config->rfkill_release &&
12197                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
12198                         goto nla_put_failure;
12199
12200                 if (nl80211_send_wowlan_patterns(msg, rdev))
12201                         goto nla_put_failure;
12202
12203                 if (nl80211_send_wowlan_tcp(msg,
12204                                             rdev->wiphy.wowlan_config->tcp))
12205                         goto nla_put_failure;
12206
12207                 if (nl80211_send_wowlan_nd(
12208                             msg,
12209                             rdev->wiphy.wowlan_config->nd_config))
12210                         goto nla_put_failure;
12211
12212                 nla_nest_end(msg, nl_wowlan);
12213         }
12214
12215         genlmsg_end(msg, hdr);
12216         return genlmsg_reply(msg, info);
12217
12218 nla_put_failure:
12219         nlmsg_free(msg);
12220         return -ENOBUFS;
12221 }
12222
12223 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
12224                                     struct nlattr *attr,
12225                                     struct cfg80211_wowlan *trig)
12226 {
12227         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
12228         struct cfg80211_wowlan_tcp *cfg;
12229         struct nl80211_wowlan_tcp_data_token *tok = NULL;
12230         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
12231         u32 size;
12232         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
12233         int err, port;
12234
12235         if (!rdev->wiphy.wowlan->tcp)
12236                 return -EINVAL;
12237
12238         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12239                                           nl80211_wowlan_tcp_policy, NULL);
12240         if (err)
12241                 return err;
12242
12243         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12244             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12245             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12246             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12247             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12248             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12249             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12250             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12251                 return -EINVAL;
12252
12253         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12254         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12255                 return -EINVAL;
12256
12257         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12258                         rdev->wiphy.wowlan->tcp->data_interval_max ||
12259             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12260                 return -EINVAL;
12261
12262         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12263         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12264                 return -EINVAL;
12265
12266         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12267         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12268                 return -EINVAL;
12269
12270         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12271                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12272
12273                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12274                 tokens_size = tokln - sizeof(*tok);
12275
12276                 if (!tok->len || tokens_size % tok->len)
12277                         return -EINVAL;
12278                 if (!rdev->wiphy.wowlan->tcp->tok)
12279                         return -EINVAL;
12280                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12281                         return -EINVAL;
12282                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12283                         return -EINVAL;
12284                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12285                         return -EINVAL;
12286                 if (tok->offset + tok->len > data_size)
12287                         return -EINVAL;
12288         }
12289
12290         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12291                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12292                 if (!rdev->wiphy.wowlan->tcp->seq)
12293                         return -EINVAL;
12294                 if (seq->len == 0 || seq->len > 4)
12295                         return -EINVAL;
12296                 if (seq->len + seq->offset > data_size)
12297                         return -EINVAL;
12298         }
12299
12300         size = sizeof(*cfg);
12301         size += data_size;
12302         size += wake_size + wake_mask_size;
12303         size += tokens_size;
12304
12305         cfg = kzalloc(size, GFP_KERNEL);
12306         if (!cfg)
12307                 return -ENOMEM;
12308         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12309         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12310         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12311                ETH_ALEN);
12312         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12313                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12314         else
12315                 port = 0;
12316 #ifdef CONFIG_INET
12317         /* allocate a socket and port for it and use it */
12318         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12319                             IPPROTO_TCP, &cfg->sock, 1);
12320         if (err) {
12321                 kfree(cfg);
12322                 return err;
12323         }
12324         if (inet_csk_get_port(cfg->sock->sk, port)) {
12325                 sock_release(cfg->sock);
12326                 kfree(cfg);
12327                 return -EADDRINUSE;
12328         }
12329         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12330 #else
12331         if (!port) {
12332                 kfree(cfg);
12333                 return -EINVAL;
12334         }
12335         cfg->src_port = port;
12336 #endif
12337
12338         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12339         cfg->payload_len = data_size;
12340         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12341         memcpy((void *)cfg->payload,
12342                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12343                data_size);
12344         if (seq)
12345                 cfg->payload_seq = *seq;
12346         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12347         cfg->wake_len = wake_size;
12348         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12349         memcpy((void *)cfg->wake_data,
12350                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12351                wake_size);
12352         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12353                          data_size + wake_size;
12354         memcpy((void *)cfg->wake_mask,
12355                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12356                wake_mask_size);
12357         if (tok) {
12358                 cfg->tokens_size = tokens_size;
12359                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12360         }
12361
12362         trig->tcp = cfg;
12363
12364         return 0;
12365 }
12366
12367 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12368                                    const struct wiphy_wowlan_support *wowlan,
12369                                    struct nlattr *attr,
12370                                    struct cfg80211_wowlan *trig)
12371 {
12372         struct nlattr **tb;
12373         int err;
12374
12375         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12376         if (!tb)
12377                 return -ENOMEM;
12378
12379         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12380                 err = -EOPNOTSUPP;
12381                 goto out;
12382         }
12383
12384         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12385                                           nl80211_policy, NULL);
12386         if (err)
12387                 goto out;
12388
12389         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12390                                                    wowlan->max_nd_match_sets);
12391         err = PTR_ERR_OR_ZERO(trig->nd_config);
12392         if (err)
12393                 trig->nd_config = NULL;
12394
12395 out:
12396         kfree(tb);
12397         return err;
12398 }
12399
12400 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12401 {
12402         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12403         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12404         struct cfg80211_wowlan new_triggers = {};
12405         struct cfg80211_wowlan *ntrig;
12406         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12407         int err, i;
12408         bool prev_enabled = rdev->wiphy.wowlan_config;
12409         bool regular = false;
12410
12411         if (!wowlan)
12412                 return -EOPNOTSUPP;
12413
12414         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12415                 cfg80211_rdev_free_wowlan(rdev);
12416                 rdev->wiphy.wowlan_config = NULL;
12417                 goto set_wakeup;
12418         }
12419
12420         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12421                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12422                                           nl80211_wowlan_policy, info->extack);
12423         if (err)
12424                 return err;
12425
12426         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12427                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12428                         return -EINVAL;
12429                 new_triggers.any = true;
12430         }
12431
12432         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12433                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12434                         return -EINVAL;
12435                 new_triggers.disconnect = true;
12436                 regular = true;
12437         }
12438
12439         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12440                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12441                         return -EINVAL;
12442                 new_triggers.magic_pkt = true;
12443                 regular = true;
12444         }
12445
12446         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12447                 return -EINVAL;
12448
12449         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12450                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12451                         return -EINVAL;
12452                 new_triggers.gtk_rekey_failure = true;
12453                 regular = true;
12454         }
12455
12456         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12457                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12458                         return -EINVAL;
12459                 new_triggers.eap_identity_req = true;
12460                 regular = true;
12461         }
12462
12463         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12464                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12465                         return -EINVAL;
12466                 new_triggers.four_way_handshake = true;
12467                 regular = true;
12468         }
12469
12470         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12471                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12472                         return -EINVAL;
12473                 new_triggers.rfkill_release = true;
12474                 regular = true;
12475         }
12476
12477         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12478                 struct nlattr *pat;
12479                 int n_patterns = 0;
12480                 int rem, pat_len, mask_len, pkt_offset;
12481                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12482
12483                 regular = true;
12484
12485                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12486                                     rem)
12487                         n_patterns++;
12488                 if (n_patterns > wowlan->n_patterns)
12489                         return -EINVAL;
12490
12491                 new_triggers.patterns = kcalloc(n_patterns,
12492                                                 sizeof(new_triggers.patterns[0]),
12493                                                 GFP_KERNEL);
12494                 if (!new_triggers.patterns)
12495                         return -ENOMEM;
12496
12497                 new_triggers.n_patterns = n_patterns;
12498                 i = 0;
12499
12500                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12501                                     rem) {
12502                         u8 *mask_pat;
12503
12504                         err = nla_parse_nested_deprecated(pat_tb,
12505                                                           MAX_NL80211_PKTPAT,
12506                                                           pat,
12507                                                           nl80211_packet_pattern_policy,
12508                                                           info->extack);
12509                         if (err)
12510                                 goto error;
12511
12512                         err = -EINVAL;
12513                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
12514                             !pat_tb[NL80211_PKTPAT_PATTERN])
12515                                 goto error;
12516                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12517                         mask_len = DIV_ROUND_UP(pat_len, 8);
12518                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12519                                 goto error;
12520                         if (pat_len > wowlan->pattern_max_len ||
12521                             pat_len < wowlan->pattern_min_len)
12522                                 goto error;
12523
12524                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
12525                                 pkt_offset = 0;
12526                         else
12527                                 pkt_offset = nla_get_u32(
12528                                         pat_tb[NL80211_PKTPAT_OFFSET]);
12529                         if (pkt_offset > wowlan->max_pkt_offset)
12530                                 goto error;
12531                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12532
12533                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12534                         if (!mask_pat) {
12535                                 err = -ENOMEM;
12536                                 goto error;
12537                         }
12538                         new_triggers.patterns[i].mask = mask_pat;
12539                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12540                                mask_len);
12541                         mask_pat += mask_len;
12542                         new_triggers.patterns[i].pattern = mask_pat;
12543                         new_triggers.patterns[i].pattern_len = pat_len;
12544                         memcpy(mask_pat,
12545                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12546                                pat_len);
12547                         i++;
12548                 }
12549         }
12550
12551         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12552                 regular = true;
12553                 err = nl80211_parse_wowlan_tcp(
12554                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12555                         &new_triggers);
12556                 if (err)
12557                         goto error;
12558         }
12559
12560         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12561                 regular = true;
12562                 err = nl80211_parse_wowlan_nd(
12563                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12564                         &new_triggers);
12565                 if (err)
12566                         goto error;
12567         }
12568
12569         /* The 'any' trigger means the device continues operating more or less
12570          * as in its normal operation mode and wakes up the host on most of the
12571          * normal interrupts (like packet RX, ...)
12572          * It therefore makes little sense to combine with the more constrained
12573          * wakeup trigger modes.
12574          */
12575         if (new_triggers.any && regular) {
12576                 err = -EINVAL;
12577                 goto error;
12578         }
12579
12580         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12581         if (!ntrig) {
12582                 err = -ENOMEM;
12583                 goto error;
12584         }
12585         cfg80211_rdev_free_wowlan(rdev);
12586         rdev->wiphy.wowlan_config = ntrig;
12587
12588  set_wakeup:
12589         if (rdev->ops->set_wakeup &&
12590             prev_enabled != !!rdev->wiphy.wowlan_config)
12591                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12592
12593         return 0;
12594  error:
12595         for (i = 0; i < new_triggers.n_patterns; i++)
12596                 kfree(new_triggers.patterns[i].mask);
12597         kfree(new_triggers.patterns);
12598         if (new_triggers.tcp && new_triggers.tcp->sock)
12599                 sock_release(new_triggers.tcp->sock);
12600         kfree(new_triggers.tcp);
12601         kfree(new_triggers.nd_config);
12602         return err;
12603 }
12604 #endif
12605
12606 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12607                                        struct cfg80211_registered_device *rdev)
12608 {
12609         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12610         int i, j, pat_len;
12611         struct cfg80211_coalesce_rules *rule;
12612
12613         if (!rdev->coalesce->n_rules)
12614                 return 0;
12615
12616         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12617         if (!nl_rules)
12618                 return -ENOBUFS;
12619
12620         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12621                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12622                 if (!nl_rule)
12623                         return -ENOBUFS;
12624
12625                 rule = &rdev->coalesce->rules[i];
12626                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12627                                 rule->delay))
12628                         return -ENOBUFS;
12629
12630                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12631                                 rule->condition))
12632                         return -ENOBUFS;
12633
12634                 nl_pats = nla_nest_start_noflag(msg,
12635                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12636                 if (!nl_pats)
12637                         return -ENOBUFS;
12638
12639                 for (j = 0; j < rule->n_patterns; j++) {
12640                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12641                         if (!nl_pat)
12642                                 return -ENOBUFS;
12643                         pat_len = rule->patterns[j].pattern_len;
12644                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12645                                     DIV_ROUND_UP(pat_len, 8),
12646                                     rule->patterns[j].mask) ||
12647                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12648                                     rule->patterns[j].pattern) ||
12649                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12650                                         rule->patterns[j].pkt_offset))
12651                                 return -ENOBUFS;
12652                         nla_nest_end(msg, nl_pat);
12653                 }
12654                 nla_nest_end(msg, nl_pats);
12655                 nla_nest_end(msg, nl_rule);
12656         }
12657         nla_nest_end(msg, nl_rules);
12658
12659         return 0;
12660 }
12661
12662 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12663 {
12664         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12665         struct sk_buff *msg;
12666         void *hdr;
12667
12668         if (!rdev->wiphy.coalesce)
12669                 return -EOPNOTSUPP;
12670
12671         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12672         if (!msg)
12673                 return -ENOMEM;
12674
12675         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12676                              NL80211_CMD_GET_COALESCE);
12677         if (!hdr)
12678                 goto nla_put_failure;
12679
12680         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12681                 goto nla_put_failure;
12682
12683         genlmsg_end(msg, hdr);
12684         return genlmsg_reply(msg, info);
12685
12686 nla_put_failure:
12687         nlmsg_free(msg);
12688         return -ENOBUFS;
12689 }
12690
12691 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12692 {
12693         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12694         int i, j;
12695         struct cfg80211_coalesce_rules *rule;
12696
12697         if (!coalesce)
12698                 return;
12699
12700         for (i = 0; i < coalesce->n_rules; i++) {
12701                 rule = &coalesce->rules[i];
12702                 for (j = 0; j < rule->n_patterns; j++)
12703                         kfree(rule->patterns[j].mask);
12704                 kfree(rule->patterns);
12705         }
12706         kfree(coalesce->rules);
12707         kfree(coalesce);
12708         rdev->coalesce = NULL;
12709 }
12710
12711 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12712                                        struct nlattr *rule,
12713                                        struct cfg80211_coalesce_rules *new_rule)
12714 {
12715         int err, i;
12716         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12717         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12718         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12719         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12720
12721         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12722                                           rule, nl80211_coalesce_policy, NULL);
12723         if (err)
12724                 return err;
12725
12726         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12727                 new_rule->delay =
12728                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12729         if (new_rule->delay > coalesce->max_delay)
12730                 return -EINVAL;
12731
12732         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12733                 new_rule->condition =
12734                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12735
12736         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12737                 return -EINVAL;
12738
12739         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12740                             rem)
12741                 n_patterns++;
12742         if (n_patterns > coalesce->n_patterns)
12743                 return -EINVAL;
12744
12745         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12746                                      GFP_KERNEL);
12747         if (!new_rule->patterns)
12748                 return -ENOMEM;
12749
12750         new_rule->n_patterns = n_patterns;
12751         i = 0;
12752
12753         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12754                             rem) {
12755                 u8 *mask_pat;
12756
12757                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12758                                                   pat,
12759                                                   nl80211_packet_pattern_policy,
12760                                                   NULL);
12761                 if (err)
12762                         return err;
12763
12764                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12765                     !pat_tb[NL80211_PKTPAT_PATTERN])
12766                         return -EINVAL;
12767                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12768                 mask_len = DIV_ROUND_UP(pat_len, 8);
12769                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12770                         return -EINVAL;
12771                 if (pat_len > coalesce->pattern_max_len ||
12772                     pat_len < coalesce->pattern_min_len)
12773                         return -EINVAL;
12774
12775                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12776                         pkt_offset = 0;
12777                 else
12778                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12779                 if (pkt_offset > coalesce->max_pkt_offset)
12780                         return -EINVAL;
12781                 new_rule->patterns[i].pkt_offset = pkt_offset;
12782
12783                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12784                 if (!mask_pat)
12785                         return -ENOMEM;
12786
12787                 new_rule->patterns[i].mask = mask_pat;
12788                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12789                        mask_len);
12790
12791                 mask_pat += mask_len;
12792                 new_rule->patterns[i].pattern = mask_pat;
12793                 new_rule->patterns[i].pattern_len = pat_len;
12794                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12795                        pat_len);
12796                 i++;
12797         }
12798
12799         return 0;
12800 }
12801
12802 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12803 {
12804         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12805         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12806         struct cfg80211_coalesce new_coalesce = {};
12807         struct cfg80211_coalesce *n_coalesce;
12808         int err, rem_rule, n_rules = 0, i, j;
12809         struct nlattr *rule;
12810         struct cfg80211_coalesce_rules *tmp_rule;
12811
12812         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12813                 return -EOPNOTSUPP;
12814
12815         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12816                 cfg80211_rdev_free_coalesce(rdev);
12817                 rdev_set_coalesce(rdev, NULL);
12818                 return 0;
12819         }
12820
12821         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12822                             rem_rule)
12823                 n_rules++;
12824         if (n_rules > coalesce->n_rules)
12825                 return -EINVAL;
12826
12827         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12828                                      GFP_KERNEL);
12829         if (!new_coalesce.rules)
12830                 return -ENOMEM;
12831
12832         new_coalesce.n_rules = n_rules;
12833         i = 0;
12834
12835         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12836                             rem_rule) {
12837                 err = nl80211_parse_coalesce_rule(rdev, rule,
12838                                                   &new_coalesce.rules[i]);
12839                 if (err)
12840                         goto error;
12841
12842                 i++;
12843         }
12844
12845         err = rdev_set_coalesce(rdev, &new_coalesce);
12846         if (err)
12847                 goto error;
12848
12849         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12850         if (!n_coalesce) {
12851                 err = -ENOMEM;
12852                 goto error;
12853         }
12854         cfg80211_rdev_free_coalesce(rdev);
12855         rdev->coalesce = n_coalesce;
12856
12857         return 0;
12858 error:
12859         for (i = 0; i < new_coalesce.n_rules; i++) {
12860                 tmp_rule = &new_coalesce.rules[i];
12861                 for (j = 0; j < tmp_rule->n_patterns; j++)
12862                         kfree(tmp_rule->patterns[j].mask);
12863                 kfree(tmp_rule->patterns);
12864         }
12865         kfree(new_coalesce.rules);
12866
12867         return err;
12868 }
12869
12870 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12871 {
12872         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12873         struct net_device *dev = info->user_ptr[1];
12874         struct wireless_dev *wdev = dev->ieee80211_ptr;
12875         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12876         struct cfg80211_gtk_rekey_data rekey_data = {};
12877         int err;
12878
12879         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12880                 return -EINVAL;
12881
12882         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12883                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12884                                           nl80211_rekey_policy, info->extack);
12885         if (err)
12886                 return err;
12887
12888         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12889             !tb[NL80211_REKEY_DATA_KCK])
12890                 return -EINVAL;
12891         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12892             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12893               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12894                 return -ERANGE;
12895         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12896             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12897               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12898                 return -ERANGE;
12899
12900         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12901         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12902         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12903         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12904         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12905         if (tb[NL80211_REKEY_DATA_AKM])
12906                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12907
12908         wdev_lock(wdev);
12909         if (!wdev->current_bss) {
12910                 err = -ENOTCONN;
12911                 goto out;
12912         }
12913
12914         if (!rdev->ops->set_rekey_data) {
12915                 err = -EOPNOTSUPP;
12916                 goto out;
12917         }
12918
12919         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12920  out:
12921         wdev_unlock(wdev);
12922         return err;
12923 }
12924
12925 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12926                                              struct genl_info *info)
12927 {
12928         struct net_device *dev = info->user_ptr[1];
12929         struct wireless_dev *wdev = dev->ieee80211_ptr;
12930
12931         if (wdev->iftype != NL80211_IFTYPE_AP &&
12932             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12933                 return -EINVAL;
12934
12935         if (wdev->ap_unexpected_nlportid)
12936                 return -EBUSY;
12937
12938         wdev->ap_unexpected_nlportid = info->snd_portid;
12939         return 0;
12940 }
12941
12942 static int nl80211_probe_client(struct sk_buff *skb,
12943                                 struct genl_info *info)
12944 {
12945         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12946         struct net_device *dev = info->user_ptr[1];
12947         struct wireless_dev *wdev = dev->ieee80211_ptr;
12948         struct sk_buff *msg;
12949         void *hdr;
12950         const u8 *addr;
12951         u64 cookie;
12952         int err;
12953
12954         if (wdev->iftype != NL80211_IFTYPE_AP &&
12955             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12956                 return -EOPNOTSUPP;
12957
12958         if (!info->attrs[NL80211_ATTR_MAC])
12959                 return -EINVAL;
12960
12961         if (!rdev->ops->probe_client)
12962                 return -EOPNOTSUPP;
12963
12964         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12965         if (!msg)
12966                 return -ENOMEM;
12967
12968         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12969                              NL80211_CMD_PROBE_CLIENT);
12970         if (!hdr) {
12971                 err = -ENOBUFS;
12972                 goto free_msg;
12973         }
12974
12975         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12976
12977         err = rdev_probe_client(rdev, dev, addr, &cookie);
12978         if (err)
12979                 goto free_msg;
12980
12981         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12982                               NL80211_ATTR_PAD))
12983                 goto nla_put_failure;
12984
12985         genlmsg_end(msg, hdr);
12986
12987         return genlmsg_reply(msg, info);
12988
12989  nla_put_failure:
12990         err = -ENOBUFS;
12991  free_msg:
12992         nlmsg_free(msg);
12993         return err;
12994 }
12995
12996 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12997 {
12998         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12999         struct cfg80211_beacon_registration *reg, *nreg;
13000         int rv;
13001
13002         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
13003                 return -EOPNOTSUPP;
13004
13005         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
13006         if (!nreg)
13007                 return -ENOMEM;
13008
13009         /* First, check if already registered. */
13010         spin_lock_bh(&rdev->beacon_registrations_lock);
13011         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13012                 if (reg->nlportid == info->snd_portid) {
13013                         rv = -EALREADY;
13014                         goto out_err;
13015                 }
13016         }
13017         /* Add it to the list */
13018         nreg->nlportid = info->snd_portid;
13019         list_add(&nreg->list, &rdev->beacon_registrations);
13020
13021         spin_unlock_bh(&rdev->beacon_registrations_lock);
13022
13023         return 0;
13024 out_err:
13025         spin_unlock_bh(&rdev->beacon_registrations_lock);
13026         kfree(nreg);
13027         return rv;
13028 }
13029
13030 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13031 {
13032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13033         struct wireless_dev *wdev = info->user_ptr[1];
13034         int err;
13035
13036         if (!rdev->ops->start_p2p_device)
13037                 return -EOPNOTSUPP;
13038
13039         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13040                 return -EOPNOTSUPP;
13041
13042         if (wdev_running(wdev))
13043                 return 0;
13044
13045         if (rfkill_blocked(rdev->rfkill))
13046                 return -ERFKILL;
13047
13048         err = rdev_start_p2p_device(rdev, wdev);
13049         if (err)
13050                 return err;
13051
13052         wdev->is_running = true;
13053         rdev->opencount++;
13054
13055         return 0;
13056 }
13057
13058 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13059 {
13060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13061         struct wireless_dev *wdev = info->user_ptr[1];
13062
13063         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13064                 return -EOPNOTSUPP;
13065
13066         if (!rdev->ops->stop_p2p_device)
13067                 return -EOPNOTSUPP;
13068
13069         cfg80211_stop_p2p_device(rdev, wdev);
13070
13071         return 0;
13072 }
13073
13074 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13075 {
13076         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13077         struct wireless_dev *wdev = info->user_ptr[1];
13078         struct cfg80211_nan_conf conf = {};
13079         int err;
13080
13081         if (wdev->iftype != NL80211_IFTYPE_NAN)
13082                 return -EOPNOTSUPP;
13083
13084         if (wdev_running(wdev))
13085                 return -EEXIST;
13086
13087         if (rfkill_blocked(rdev->rfkill))
13088                 return -ERFKILL;
13089
13090         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
13091                 return -EINVAL;
13092
13093         conf.master_pref =
13094                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13095
13096         if (info->attrs[NL80211_ATTR_BANDS]) {
13097                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13098
13099                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13100                         return -EOPNOTSUPP;
13101
13102                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13103                         return -EINVAL;
13104
13105                 conf.bands = bands;
13106         }
13107
13108         err = rdev_start_nan(rdev, wdev, &conf);
13109         if (err)
13110                 return err;
13111
13112         wdev->is_running = true;
13113         rdev->opencount++;
13114
13115         return 0;
13116 }
13117
13118 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
13119 {
13120         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13121         struct wireless_dev *wdev = info->user_ptr[1];
13122
13123         if (wdev->iftype != NL80211_IFTYPE_NAN)
13124                 return -EOPNOTSUPP;
13125
13126         cfg80211_stop_nan(rdev, wdev);
13127
13128         return 0;
13129 }
13130
13131 static int validate_nan_filter(struct nlattr *filter_attr)
13132 {
13133         struct nlattr *attr;
13134         int len = 0, n_entries = 0, rem;
13135
13136         nla_for_each_nested(attr, filter_attr, rem) {
13137                 len += nla_len(attr);
13138                 n_entries++;
13139         }
13140
13141         if (len >= U8_MAX)
13142                 return -EINVAL;
13143
13144         return n_entries;
13145 }
13146
13147 static int handle_nan_filter(struct nlattr *attr_filter,
13148                              struct cfg80211_nan_func *func,
13149                              bool tx)
13150 {
13151         struct nlattr *attr;
13152         int n_entries, rem, i;
13153         struct cfg80211_nan_func_filter *filter;
13154
13155         n_entries = validate_nan_filter(attr_filter);
13156         if (n_entries < 0)
13157                 return n_entries;
13158
13159         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
13160
13161         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
13162         if (!filter)
13163                 return -ENOMEM;
13164
13165         i = 0;
13166         nla_for_each_nested(attr, attr_filter, rem) {
13167                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
13168                 filter[i].len = nla_len(attr);
13169                 i++;
13170         }
13171         if (tx) {
13172                 func->num_tx_filters = n_entries;
13173                 func->tx_filters = filter;
13174         } else {
13175                 func->num_rx_filters = n_entries;
13176                 func->rx_filters = filter;
13177         }
13178
13179         return 0;
13180 }
13181
13182 static int nl80211_nan_add_func(struct sk_buff *skb,
13183                                 struct genl_info *info)
13184 {
13185         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13186         struct wireless_dev *wdev = info->user_ptr[1];
13187         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
13188         struct cfg80211_nan_func *func;
13189         struct sk_buff *msg = NULL;
13190         void *hdr = NULL;
13191         int err = 0;
13192
13193         if (wdev->iftype != NL80211_IFTYPE_NAN)
13194                 return -EOPNOTSUPP;
13195
13196         if (!wdev_running(wdev))
13197                 return -ENOTCONN;
13198
13199         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
13200                 return -EINVAL;
13201
13202         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
13203                                           info->attrs[NL80211_ATTR_NAN_FUNC],
13204                                           nl80211_nan_func_policy,
13205                                           info->extack);
13206         if (err)
13207                 return err;
13208
13209         func = kzalloc(sizeof(*func), GFP_KERNEL);
13210         if (!func)
13211                 return -ENOMEM;
13212
13213         func->cookie = cfg80211_assign_cookie(rdev);
13214
13215         if (!tb[NL80211_NAN_FUNC_TYPE]) {
13216                 err = -EINVAL;
13217                 goto out;
13218         }
13219
13220
13221         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
13222
13223         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
13224                 err = -EINVAL;
13225                 goto out;
13226         }
13227
13228         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
13229                sizeof(func->service_id));
13230
13231         func->close_range =
13232                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
13233
13234         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13235                 func->serv_spec_info_len =
13236                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13237                 func->serv_spec_info =
13238                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13239                                 func->serv_spec_info_len,
13240                                 GFP_KERNEL);
13241                 if (!func->serv_spec_info) {
13242                         err = -ENOMEM;
13243                         goto out;
13244                 }
13245         }
13246
13247         if (tb[NL80211_NAN_FUNC_TTL])
13248                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13249
13250         switch (func->type) {
13251         case NL80211_NAN_FUNC_PUBLISH:
13252                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13253                         err = -EINVAL;
13254                         goto out;
13255                 }
13256
13257                 func->publish_type =
13258                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13259                 func->publish_bcast =
13260                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13261
13262                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13263                         func->publish_bcast) {
13264                         err = -EINVAL;
13265                         goto out;
13266                 }
13267                 break;
13268         case NL80211_NAN_FUNC_SUBSCRIBE:
13269                 func->subscribe_active =
13270                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13271                 break;
13272         case NL80211_NAN_FUNC_FOLLOW_UP:
13273                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13274                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13275                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13276                         err = -EINVAL;
13277                         goto out;
13278                 }
13279
13280                 func->followup_id =
13281                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13282                 func->followup_reqid =
13283                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13284                 memcpy(func->followup_dest.addr,
13285                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13286                        sizeof(func->followup_dest.addr));
13287                 if (func->ttl) {
13288                         err = -EINVAL;
13289                         goto out;
13290                 }
13291                 break;
13292         default:
13293                 err = -EINVAL;
13294                 goto out;
13295         }
13296
13297         if (tb[NL80211_NAN_FUNC_SRF]) {
13298                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13299
13300                 err = nla_parse_nested_deprecated(srf_tb,
13301                                                   NL80211_NAN_SRF_ATTR_MAX,
13302                                                   tb[NL80211_NAN_FUNC_SRF],
13303                                                   nl80211_nan_srf_policy,
13304                                                   info->extack);
13305                 if (err)
13306                         goto out;
13307
13308                 func->srf_include =
13309                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13310
13311                 if (srf_tb[NL80211_NAN_SRF_BF]) {
13312                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13313                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13314                                 err = -EINVAL;
13315                                 goto out;
13316                         }
13317
13318                         func->srf_bf_len =
13319                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13320                         func->srf_bf =
13321                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13322                                         func->srf_bf_len, GFP_KERNEL);
13323                         if (!func->srf_bf) {
13324                                 err = -ENOMEM;
13325                                 goto out;
13326                         }
13327
13328                         func->srf_bf_idx =
13329                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13330                 } else {
13331                         struct nlattr *attr, *mac_attr =
13332                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13333                         int n_entries, rem, i = 0;
13334
13335                         if (!mac_attr) {
13336                                 err = -EINVAL;
13337                                 goto out;
13338                         }
13339
13340                         n_entries = validate_acl_mac_addrs(mac_attr);
13341                         if (n_entries <= 0) {
13342                                 err = -EINVAL;
13343                                 goto out;
13344                         }
13345
13346                         func->srf_num_macs = n_entries;
13347                         func->srf_macs =
13348                                 kcalloc(n_entries, sizeof(*func->srf_macs),
13349                                         GFP_KERNEL);
13350                         if (!func->srf_macs) {
13351                                 err = -ENOMEM;
13352                                 goto out;
13353                         }
13354
13355                         nla_for_each_nested(attr, mac_attr, rem)
13356                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13357                                        sizeof(*func->srf_macs));
13358                 }
13359         }
13360
13361         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13362                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13363                                         func, true);
13364                 if (err)
13365                         goto out;
13366         }
13367
13368         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13369                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13370                                         func, false);
13371                 if (err)
13372                         goto out;
13373         }
13374
13375         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13376         if (!msg) {
13377                 err = -ENOMEM;
13378                 goto out;
13379         }
13380
13381         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13382                              NL80211_CMD_ADD_NAN_FUNCTION);
13383         /* This can't really happen - we just allocated 4KB */
13384         if (WARN_ON(!hdr)) {
13385                 err = -ENOMEM;
13386                 goto out;
13387         }
13388
13389         err = rdev_add_nan_func(rdev, wdev, func);
13390 out:
13391         if (err < 0) {
13392                 cfg80211_free_nan_func(func);
13393                 nlmsg_free(msg);
13394                 return err;
13395         }
13396
13397         /* propagate the instance id and cookie to userspace  */
13398         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13399                               NL80211_ATTR_PAD))
13400                 goto nla_put_failure;
13401
13402         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13403         if (!func_attr)
13404                 goto nla_put_failure;
13405
13406         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13407                        func->instance_id))
13408                 goto nla_put_failure;
13409
13410         nla_nest_end(msg, func_attr);
13411
13412         genlmsg_end(msg, hdr);
13413         return genlmsg_reply(msg, info);
13414
13415 nla_put_failure:
13416         nlmsg_free(msg);
13417         return -ENOBUFS;
13418 }
13419
13420 static int nl80211_nan_del_func(struct sk_buff *skb,
13421                                struct genl_info *info)
13422 {
13423         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13424         struct wireless_dev *wdev = info->user_ptr[1];
13425         u64 cookie;
13426
13427         if (wdev->iftype != NL80211_IFTYPE_NAN)
13428                 return -EOPNOTSUPP;
13429
13430         if (!wdev_running(wdev))
13431                 return -ENOTCONN;
13432
13433         if (!info->attrs[NL80211_ATTR_COOKIE])
13434                 return -EINVAL;
13435
13436         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13437
13438         rdev_del_nan_func(rdev, wdev, cookie);
13439
13440         return 0;
13441 }
13442
13443 static int nl80211_nan_change_config(struct sk_buff *skb,
13444                                      struct genl_info *info)
13445 {
13446         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13447         struct wireless_dev *wdev = info->user_ptr[1];
13448         struct cfg80211_nan_conf conf = {};
13449         u32 changed = 0;
13450
13451         if (wdev->iftype != NL80211_IFTYPE_NAN)
13452                 return -EOPNOTSUPP;
13453
13454         if (!wdev_running(wdev))
13455                 return -ENOTCONN;
13456
13457         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13458                 conf.master_pref =
13459                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13460                 if (conf.master_pref <= 1 || conf.master_pref == 255)
13461                         return -EINVAL;
13462
13463                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13464         }
13465
13466         if (info->attrs[NL80211_ATTR_BANDS]) {
13467                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13468
13469                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13470                         return -EOPNOTSUPP;
13471
13472                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13473                         return -EINVAL;
13474
13475                 conf.bands = bands;
13476                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13477         }
13478
13479         if (!changed)
13480                 return -EINVAL;
13481
13482         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13483 }
13484
13485 void cfg80211_nan_match(struct wireless_dev *wdev,
13486                         struct cfg80211_nan_match_params *match, gfp_t gfp)
13487 {
13488         struct wiphy *wiphy = wdev->wiphy;
13489         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13490         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13491         struct sk_buff *msg;
13492         void *hdr;
13493
13494         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13495                 return;
13496
13497         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13498         if (!msg)
13499                 return;
13500
13501         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13502         if (!hdr) {
13503                 nlmsg_free(msg);
13504                 return;
13505         }
13506
13507         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13508             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13509                                          wdev->netdev->ifindex)) ||
13510             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13511                               NL80211_ATTR_PAD))
13512                 goto nla_put_failure;
13513
13514         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13515                               NL80211_ATTR_PAD) ||
13516             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13517                 goto nla_put_failure;
13518
13519         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13520         if (!match_attr)
13521                 goto nla_put_failure;
13522
13523         local_func_attr = nla_nest_start_noflag(msg,
13524                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
13525         if (!local_func_attr)
13526                 goto nla_put_failure;
13527
13528         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13529                 goto nla_put_failure;
13530
13531         nla_nest_end(msg, local_func_attr);
13532
13533         peer_func_attr = nla_nest_start_noflag(msg,
13534                                                NL80211_NAN_MATCH_FUNC_PEER);
13535         if (!peer_func_attr)
13536                 goto nla_put_failure;
13537
13538         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13539             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13540                 goto nla_put_failure;
13541
13542         if (match->info && match->info_len &&
13543             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13544                     match->info))
13545                 goto nla_put_failure;
13546
13547         nla_nest_end(msg, peer_func_attr);
13548         nla_nest_end(msg, match_attr);
13549         genlmsg_end(msg, hdr);
13550
13551         if (!wdev->owner_nlportid)
13552                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13553                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13554         else
13555                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13556                                 wdev->owner_nlportid);
13557
13558         return;
13559
13560 nla_put_failure:
13561         nlmsg_free(msg);
13562 }
13563 EXPORT_SYMBOL(cfg80211_nan_match);
13564
13565 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13566                                   u8 inst_id,
13567                                   enum nl80211_nan_func_term_reason reason,
13568                                   u64 cookie, gfp_t gfp)
13569 {
13570         struct wiphy *wiphy = wdev->wiphy;
13571         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13572         struct sk_buff *msg;
13573         struct nlattr *func_attr;
13574         void *hdr;
13575
13576         if (WARN_ON(!inst_id))
13577                 return;
13578
13579         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13580         if (!msg)
13581                 return;
13582
13583         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13584         if (!hdr) {
13585                 nlmsg_free(msg);
13586                 return;
13587         }
13588
13589         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13590             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13591                                          wdev->netdev->ifindex)) ||
13592             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13593                               NL80211_ATTR_PAD))
13594                 goto nla_put_failure;
13595
13596         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13597                               NL80211_ATTR_PAD))
13598                 goto nla_put_failure;
13599
13600         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13601         if (!func_attr)
13602                 goto nla_put_failure;
13603
13604         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13605             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13606                 goto nla_put_failure;
13607
13608         nla_nest_end(msg, func_attr);
13609         genlmsg_end(msg, hdr);
13610
13611         if (!wdev->owner_nlportid)
13612                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13613                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13614         else
13615                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13616                                 wdev->owner_nlportid);
13617
13618         return;
13619
13620 nla_put_failure:
13621         nlmsg_free(msg);
13622 }
13623 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13624
13625 static int nl80211_get_protocol_features(struct sk_buff *skb,
13626                                          struct genl_info *info)
13627 {
13628         void *hdr;
13629         struct sk_buff *msg;
13630
13631         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13632         if (!msg)
13633                 return -ENOMEM;
13634
13635         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13636                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13637         if (!hdr)
13638                 goto nla_put_failure;
13639
13640         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13641                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13642                 goto nla_put_failure;
13643
13644         genlmsg_end(msg, hdr);
13645         return genlmsg_reply(msg, info);
13646
13647  nla_put_failure:
13648         kfree_skb(msg);
13649         return -ENOBUFS;
13650 }
13651
13652 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13653 {
13654         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13655         struct cfg80211_update_ft_ies_params ft_params;
13656         struct net_device *dev = info->user_ptr[1];
13657
13658         if (!rdev->ops->update_ft_ies)
13659                 return -EOPNOTSUPP;
13660
13661         if (!info->attrs[NL80211_ATTR_MDID] ||
13662             !info->attrs[NL80211_ATTR_IE])
13663                 return -EINVAL;
13664
13665         memset(&ft_params, 0, sizeof(ft_params));
13666         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13667         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13668         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13669
13670         return rdev_update_ft_ies(rdev, dev, &ft_params);
13671 }
13672
13673 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13674                                        struct genl_info *info)
13675 {
13676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13677         struct wireless_dev *wdev = info->user_ptr[1];
13678         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13679         u16 duration;
13680         int ret;
13681
13682         if (!rdev->ops->crit_proto_start)
13683                 return -EOPNOTSUPP;
13684
13685         if (WARN_ON(!rdev->ops->crit_proto_stop))
13686                 return -EINVAL;
13687
13688         if (rdev->crit_proto_nlportid)
13689                 return -EBUSY;
13690
13691         /* determine protocol if provided */
13692         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13693                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13694
13695         if (proto >= NUM_NL80211_CRIT_PROTO)
13696                 return -EINVAL;
13697
13698         /* timeout must be provided */
13699         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13700                 return -EINVAL;
13701
13702         duration =
13703                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13704
13705         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13706         if (!ret)
13707                 rdev->crit_proto_nlportid = info->snd_portid;
13708
13709         return ret;
13710 }
13711
13712 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13713                                       struct genl_info *info)
13714 {
13715         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13716         struct wireless_dev *wdev = info->user_ptr[1];
13717
13718         if (!rdev->ops->crit_proto_stop)
13719                 return -EOPNOTSUPP;
13720
13721         if (rdev->crit_proto_nlportid) {
13722                 rdev->crit_proto_nlportid = 0;
13723                 rdev_crit_proto_stop(rdev, wdev);
13724         }
13725         return 0;
13726 }
13727
13728 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13729                                        struct nlattr *attr,
13730                                        struct netlink_ext_ack *extack)
13731 {
13732         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13733                 if (attr->nla_type & NLA_F_NESTED) {
13734                         NL_SET_ERR_MSG_ATTR(extack, attr,
13735                                             "unexpected nested data");
13736                         return -EINVAL;
13737                 }
13738
13739                 return 0;
13740         }
13741
13742         if (!(attr->nla_type & NLA_F_NESTED)) {
13743                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13744                 return -EINVAL;
13745         }
13746
13747         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13748 }
13749
13750 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13751 {
13752         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13753         struct wireless_dev *wdev =
13754                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
13755                                            info->attrs);
13756         int i, err;
13757         u32 vid, subcmd;
13758
13759         if (!rdev->wiphy.vendor_commands)
13760                 return -EOPNOTSUPP;
13761
13762         if (IS_ERR(wdev)) {
13763                 err = PTR_ERR(wdev);
13764                 if (err != -EINVAL)
13765                         return err;
13766                 wdev = NULL;
13767         } else if (wdev->wiphy != &rdev->wiphy) {
13768                 return -EINVAL;
13769         }
13770
13771         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13772             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13773                 return -EINVAL;
13774
13775         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13776         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13777         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13778                 const struct wiphy_vendor_command *vcmd;
13779                 void *data = NULL;
13780                 int len = 0;
13781
13782                 vcmd = &rdev->wiphy.vendor_commands[i];
13783
13784                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13785                         continue;
13786
13787                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13788                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13789                         if (!wdev)
13790                                 return -EINVAL;
13791                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13792                             !wdev->netdev)
13793                                 return -EINVAL;
13794
13795                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13796                                 if (!wdev_running(wdev))
13797                                         return -ENETDOWN;
13798                         }
13799                 } else {
13800                         wdev = NULL;
13801                 }
13802
13803                 if (!vcmd->doit)
13804                         return -EOPNOTSUPP;
13805
13806                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13807                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13808                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13809
13810                         err = nl80211_vendor_check_policy(vcmd,
13811                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13812                                         info->extack);
13813                         if (err)
13814                                 return err;
13815                 }
13816
13817                 rdev->cur_cmd_info = info;
13818                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13819                 rdev->cur_cmd_info = NULL;
13820                 return err;
13821         }
13822
13823         return -EOPNOTSUPP;
13824 }
13825
13826 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13827                                        struct netlink_callback *cb,
13828                                        struct cfg80211_registered_device **rdev,
13829                                        struct wireless_dev **wdev)
13830 {
13831         struct nlattr **attrbuf;
13832         u32 vid, subcmd;
13833         unsigned int i;
13834         int vcmd_idx = -1;
13835         int err;
13836         void *data = NULL;
13837         unsigned int data_len = 0;
13838
13839         if (cb->args[0]) {
13840                 /* subtract the 1 again here */
13841                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13842                 struct wireless_dev *tmp;
13843
13844                 if (!wiphy)
13845                         return -ENODEV;
13846                 *rdev = wiphy_to_rdev(wiphy);
13847                 *wdev = NULL;
13848
13849                 if (cb->args[1]) {
13850                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13851                                 if (tmp->identifier == cb->args[1] - 1) {
13852                                         *wdev = tmp;
13853                                         break;
13854                                 }
13855                         }
13856                 }
13857
13858                 /* keep rtnl locked in successful case */
13859                 return 0;
13860         }
13861
13862         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13863         if (!attrbuf)
13864                 return -ENOMEM;
13865
13866         err = nlmsg_parse_deprecated(cb->nlh,
13867                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13868                                      attrbuf, nl80211_fam.maxattr,
13869                                      nl80211_policy, NULL);
13870         if (err)
13871                 goto out;
13872
13873         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13874             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13875                 err = -EINVAL;
13876                 goto out;
13877         }
13878
13879         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
13880         if (IS_ERR(*wdev))
13881                 *wdev = NULL;
13882
13883         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13884         if (IS_ERR(*rdev)) {
13885                 err = PTR_ERR(*rdev);
13886                 goto out;
13887         }
13888
13889         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13890         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13891
13892         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13893                 const struct wiphy_vendor_command *vcmd;
13894
13895                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13896
13897                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13898                         continue;
13899
13900                 if (!vcmd->dumpit) {
13901                         err = -EOPNOTSUPP;
13902                         goto out;
13903                 }
13904
13905                 vcmd_idx = i;
13906                 break;
13907         }
13908
13909         if (vcmd_idx < 0) {
13910                 err = -EOPNOTSUPP;
13911                 goto out;
13912         }
13913
13914         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13915                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13916                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13917
13918                 err = nl80211_vendor_check_policy(
13919                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13920                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13921                                 cb->extack);
13922                 if (err)
13923                         goto out;
13924         }
13925
13926         /* 0 is the first index - add 1 to parse only once */
13927         cb->args[0] = (*rdev)->wiphy_idx + 1;
13928         /* add 1 to know if it was NULL */
13929         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13930         cb->args[2] = vcmd_idx;
13931         cb->args[3] = (unsigned long)data;
13932         cb->args[4] = data_len;
13933
13934         /* keep rtnl locked in successful case */
13935         err = 0;
13936 out:
13937         kfree(attrbuf);
13938         return err;
13939 }
13940
13941 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13942                                    struct netlink_callback *cb)
13943 {
13944         struct cfg80211_registered_device *rdev;
13945         struct wireless_dev *wdev;
13946         unsigned int vcmd_idx;
13947         const struct wiphy_vendor_command *vcmd;
13948         void *data;
13949         int data_len;
13950         int err;
13951         struct nlattr *vendor_data;
13952
13953         rtnl_lock();
13954         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13955         if (err)
13956                 goto out;
13957
13958         vcmd_idx = cb->args[2];
13959         data = (void *)cb->args[3];
13960         data_len = cb->args[4];
13961         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13962
13963         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13964                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13965                 if (!wdev) {
13966                         err = -EINVAL;
13967                         goto out;
13968                 }
13969                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13970                     !wdev->netdev) {
13971                         err = -EINVAL;
13972                         goto out;
13973                 }
13974
13975                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13976                         if (!wdev_running(wdev)) {
13977                                 err = -ENETDOWN;
13978                                 goto out;
13979                         }
13980                 }
13981         }
13982
13983         while (1) {
13984                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13985                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13986                                            NL80211_CMD_VENDOR);
13987                 if (!hdr)
13988                         break;
13989
13990                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13991                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13992                                                wdev_id(wdev),
13993                                                NL80211_ATTR_PAD))) {
13994                         genlmsg_cancel(skb, hdr);
13995                         break;
13996                 }
13997
13998                 vendor_data = nla_nest_start_noflag(skb,
13999                                                     NL80211_ATTR_VENDOR_DATA);
14000                 if (!vendor_data) {
14001                         genlmsg_cancel(skb, hdr);
14002                         break;
14003                 }
14004
14005                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
14006                                    (unsigned long *)&cb->args[5]);
14007                 nla_nest_end(skb, vendor_data);
14008
14009                 if (err == -ENOBUFS || err == -ENOENT) {
14010                         genlmsg_cancel(skb, hdr);
14011                         break;
14012                 } else if (err <= 0) {
14013                         genlmsg_cancel(skb, hdr);
14014                         goto out;
14015                 }
14016
14017                 genlmsg_end(skb, hdr);
14018         }
14019
14020         err = skb->len;
14021  out:
14022         rtnl_unlock();
14023         return err;
14024 }
14025
14026 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14027                                            enum nl80211_commands cmd,
14028                                            enum nl80211_attrs attr,
14029                                            int approxlen)
14030 {
14031         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14032
14033         if (WARN_ON(!rdev->cur_cmd_info))
14034                 return NULL;
14035
14036         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14037                                            rdev->cur_cmd_info->snd_portid,
14038                                            rdev->cur_cmd_info->snd_seq,
14039                                            cmd, attr, NULL, GFP_KERNEL);
14040 }
14041 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14042
14043 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14044 {
14045         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14046         void *hdr = ((void **)skb->cb)[1];
14047         struct nlattr *data = ((void **)skb->cb)[2];
14048
14049         /* clear CB data for netlink core to own from now on */
14050         memset(skb->cb, 0, sizeof(skb->cb));
14051
14052         if (WARN_ON(!rdev->cur_cmd_info)) {
14053                 kfree_skb(skb);
14054                 return -EINVAL;
14055         }
14056
14057         nla_nest_end(skb, data);
14058         genlmsg_end(skb, hdr);
14059         return genlmsg_reply(skb, rdev->cur_cmd_info);
14060 }
14061 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14062
14063 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14064 {
14065         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14066
14067         if (WARN_ON(!rdev->cur_cmd_info))
14068                 return 0;
14069
14070         return rdev->cur_cmd_info->snd_portid;
14071 }
14072 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
14073
14074 static int nl80211_set_qos_map(struct sk_buff *skb,
14075                                struct genl_info *info)
14076 {
14077         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14078         struct cfg80211_qos_map *qos_map = NULL;
14079         struct net_device *dev = info->user_ptr[1];
14080         u8 *pos, len, num_des, des_len, des;
14081         int ret;
14082
14083         if (!rdev->ops->set_qos_map)
14084                 return -EOPNOTSUPP;
14085
14086         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
14087                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
14088                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
14089
14090                 if (len % 2)
14091                         return -EINVAL;
14092
14093                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
14094                 if (!qos_map)
14095                         return -ENOMEM;
14096
14097                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
14098                 if (num_des) {
14099                         des_len = num_des *
14100                                 sizeof(struct cfg80211_dscp_exception);
14101                         memcpy(qos_map->dscp_exception, pos, des_len);
14102                         qos_map->num_des = num_des;
14103                         for (des = 0; des < num_des; des++) {
14104                                 if (qos_map->dscp_exception[des].up > 7) {
14105                                         kfree(qos_map);
14106                                         return -EINVAL;
14107                                 }
14108                         }
14109                         pos += des_len;
14110                 }
14111                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
14112         }
14113
14114         wdev_lock(dev->ieee80211_ptr);
14115         ret = nl80211_key_allowed(dev->ieee80211_ptr);
14116         if (!ret)
14117                 ret = rdev_set_qos_map(rdev, dev, qos_map);
14118         wdev_unlock(dev->ieee80211_ptr);
14119
14120         kfree(qos_map);
14121         return ret;
14122 }
14123
14124 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
14125 {
14126         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14127         struct net_device *dev = info->user_ptr[1];
14128         struct wireless_dev *wdev = dev->ieee80211_ptr;
14129         const u8 *peer;
14130         u8 tsid, up;
14131         u16 admitted_time = 0;
14132         int err;
14133
14134         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
14135                 return -EOPNOTSUPP;
14136
14137         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
14138             !info->attrs[NL80211_ATTR_USER_PRIO])
14139                 return -EINVAL;
14140
14141         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14142         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
14143
14144         /* WMM uses TIDs 0-7 even for TSPEC */
14145         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
14146                 /* TODO: handle 802.11 TSPEC/admission control
14147                  * need more attributes for that (e.g. BA session requirement);
14148                  * change the WMM adminssion test above to allow both then
14149                  */
14150                 return -EINVAL;
14151         }
14152
14153         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14154
14155         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
14156                 admitted_time =
14157                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
14158                 if (!admitted_time)
14159                         return -EINVAL;
14160         }
14161
14162         wdev_lock(wdev);
14163         switch (wdev->iftype) {
14164         case NL80211_IFTYPE_STATION:
14165         case NL80211_IFTYPE_P2P_CLIENT:
14166                 if (wdev->current_bss)
14167                         break;
14168                 err = -ENOTCONN;
14169                 goto out;
14170         default:
14171                 err = -EOPNOTSUPP;
14172                 goto out;
14173         }
14174
14175         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
14176
14177  out:
14178         wdev_unlock(wdev);
14179         return err;
14180 }
14181
14182 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
14183 {
14184         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14185         struct net_device *dev = info->user_ptr[1];
14186         struct wireless_dev *wdev = dev->ieee80211_ptr;
14187         const u8 *peer;
14188         u8 tsid;
14189         int err;
14190
14191         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
14192                 return -EINVAL;
14193
14194         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14195         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14196
14197         wdev_lock(wdev);
14198         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
14199         wdev_unlock(wdev);
14200
14201         return err;
14202 }
14203
14204 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
14205                                        struct genl_info *info)
14206 {
14207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14208         struct net_device *dev = info->user_ptr[1];
14209         struct wireless_dev *wdev = dev->ieee80211_ptr;
14210         struct cfg80211_chan_def chandef = {};
14211         const u8 *addr;
14212         u8 oper_class;
14213         int err;
14214
14215         if (!rdev->ops->tdls_channel_switch ||
14216             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14217                 return -EOPNOTSUPP;
14218
14219         switch (dev->ieee80211_ptr->iftype) {
14220         case NL80211_IFTYPE_STATION:
14221         case NL80211_IFTYPE_P2P_CLIENT:
14222                 break;
14223         default:
14224                 return -EOPNOTSUPP;
14225         }
14226
14227         if (!info->attrs[NL80211_ATTR_MAC] ||
14228             !info->attrs[NL80211_ATTR_OPER_CLASS])
14229                 return -EINVAL;
14230
14231         err = nl80211_parse_chandef(rdev, info, &chandef);
14232         if (err)
14233                 return err;
14234
14235         /*
14236          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14237          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14238          * specification is not defined for them.
14239          */
14240         if (chandef.chan->band == NL80211_BAND_2GHZ &&
14241             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14242             chandef.width != NL80211_CHAN_WIDTH_20)
14243                 return -EINVAL;
14244
14245         /* we will be active on the TDLS link */
14246         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14247                                            wdev->iftype))
14248                 return -EINVAL;
14249
14250         /* don't allow switching to DFS channels */
14251         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14252                 return -EINVAL;
14253
14254         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14255         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14256
14257         wdev_lock(wdev);
14258         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14259         wdev_unlock(wdev);
14260
14261         return err;
14262 }
14263
14264 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14265                                               struct genl_info *info)
14266 {
14267         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14268         struct net_device *dev = info->user_ptr[1];
14269         struct wireless_dev *wdev = dev->ieee80211_ptr;
14270         const u8 *addr;
14271
14272         if (!rdev->ops->tdls_channel_switch ||
14273             !rdev->ops->tdls_cancel_channel_switch ||
14274             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14275                 return -EOPNOTSUPP;
14276
14277         switch (dev->ieee80211_ptr->iftype) {
14278         case NL80211_IFTYPE_STATION:
14279         case NL80211_IFTYPE_P2P_CLIENT:
14280                 break;
14281         default:
14282                 return -EOPNOTSUPP;
14283         }
14284
14285         if (!info->attrs[NL80211_ATTR_MAC])
14286                 return -EINVAL;
14287
14288         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14289
14290         wdev_lock(wdev);
14291         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14292         wdev_unlock(wdev);
14293
14294         return 0;
14295 }
14296
14297 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14298                                             struct genl_info *info)
14299 {
14300         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14301         struct net_device *dev = info->user_ptr[1];
14302         struct wireless_dev *wdev = dev->ieee80211_ptr;
14303         const struct nlattr *nla;
14304         bool enabled;
14305
14306         if (!rdev->ops->set_multicast_to_unicast)
14307                 return -EOPNOTSUPP;
14308
14309         if (wdev->iftype != NL80211_IFTYPE_AP &&
14310             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14311                 return -EOPNOTSUPP;
14312
14313         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14314         enabled = nla_get_flag(nla);
14315
14316         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14317 }
14318
14319 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14320 {
14321         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14322         struct net_device *dev = info->user_ptr[1];
14323         struct wireless_dev *wdev = dev->ieee80211_ptr;
14324         struct cfg80211_pmk_conf pmk_conf = {};
14325         int ret;
14326
14327         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14328             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14329                 return -EOPNOTSUPP;
14330
14331         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14332                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14333                 return -EOPNOTSUPP;
14334
14335         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14336                 return -EINVAL;
14337
14338         wdev_lock(wdev);
14339         if (!wdev->current_bss) {
14340                 ret = -ENOTCONN;
14341                 goto out;
14342         }
14343
14344         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14345         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14346                 ret = -EINVAL;
14347                 goto out;
14348         }
14349
14350         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14351         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14352         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14353             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14354                 ret = -EINVAL;
14355                 goto out;
14356         }
14357
14358         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14359                 pmk_conf.pmk_r0_name =
14360                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14361
14362         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14363 out:
14364         wdev_unlock(wdev);
14365         return ret;
14366 }
14367
14368 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14369 {
14370         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14371         struct net_device *dev = info->user_ptr[1];
14372         struct wireless_dev *wdev = dev->ieee80211_ptr;
14373         const u8 *aa;
14374         int ret;
14375
14376         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14377             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14378                 return -EOPNOTSUPP;
14379
14380         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14381                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14382                 return -EOPNOTSUPP;
14383
14384         if (!info->attrs[NL80211_ATTR_MAC])
14385                 return -EINVAL;
14386
14387         wdev_lock(wdev);
14388         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14389         ret = rdev_del_pmk(rdev, dev, aa);
14390         wdev_unlock(wdev);
14391
14392         return ret;
14393 }
14394
14395 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14396 {
14397         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14398         struct net_device *dev = info->user_ptr[1];
14399         struct cfg80211_external_auth_params params;
14400
14401         if (!rdev->ops->external_auth)
14402                 return -EOPNOTSUPP;
14403
14404         if (!info->attrs[NL80211_ATTR_SSID] &&
14405             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14406             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14407                 return -EINVAL;
14408
14409         if (!info->attrs[NL80211_ATTR_BSSID])
14410                 return -EINVAL;
14411
14412         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14413                 return -EINVAL;
14414
14415         memset(&params, 0, sizeof(params));
14416
14417         if (info->attrs[NL80211_ATTR_SSID]) {
14418                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14419                 if (params.ssid.ssid_len == 0)
14420                         return -EINVAL;
14421                 memcpy(params.ssid.ssid,
14422                        nla_data(info->attrs[NL80211_ATTR_SSID]),
14423                        params.ssid.ssid_len);
14424         }
14425
14426         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14427                ETH_ALEN);
14428
14429         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14430
14431         if (info->attrs[NL80211_ATTR_PMKID])
14432                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14433
14434         return rdev_external_auth(rdev, dev, &params);
14435 }
14436
14437 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14438 {
14439         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14440         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14441         struct net_device *dev = info->user_ptr[1];
14442         struct wireless_dev *wdev = dev->ieee80211_ptr;
14443         const u8 *buf;
14444         size_t len;
14445         u8 *dest;
14446         u16 proto;
14447         bool noencrypt;
14448         u64 cookie = 0;
14449         int err;
14450
14451         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14452                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14453                 return -EOPNOTSUPP;
14454
14455         if (!rdev->ops->tx_control_port)
14456                 return -EOPNOTSUPP;
14457
14458         if (!info->attrs[NL80211_ATTR_FRAME] ||
14459             !info->attrs[NL80211_ATTR_MAC] ||
14460             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14461                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14462                 return -EINVAL;
14463         }
14464
14465         wdev_lock(wdev);
14466
14467         switch (wdev->iftype) {
14468         case NL80211_IFTYPE_AP:
14469         case NL80211_IFTYPE_P2P_GO:
14470         case NL80211_IFTYPE_MESH_POINT:
14471                 break;
14472         case NL80211_IFTYPE_ADHOC:
14473         case NL80211_IFTYPE_STATION:
14474         case NL80211_IFTYPE_P2P_CLIENT:
14475                 if (wdev->current_bss)
14476                         break;
14477                 err = -ENOTCONN;
14478                 goto out;
14479         default:
14480                 err = -EOPNOTSUPP;
14481                 goto out;
14482         }
14483
14484         wdev_unlock(wdev);
14485
14486         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14487         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14488         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14489         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14490         noencrypt =
14491                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14492
14493         err = rdev_tx_control_port(rdev, dev, buf, len,
14494                                    dest, cpu_to_be16(proto), noencrypt,
14495                                    dont_wait_for_ack ? NULL : &cookie);
14496         if (!err && !dont_wait_for_ack)
14497                 nl_set_extack_cookie_u64(info->extack, cookie);
14498         return err;
14499  out:
14500         wdev_unlock(wdev);
14501         return err;
14502 }
14503
14504 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14505                                            struct genl_info *info)
14506 {
14507         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14508         struct net_device *dev = info->user_ptr[1];
14509         struct wireless_dev *wdev = dev->ieee80211_ptr;
14510         struct cfg80211_ftm_responder_stats ftm_stats = {};
14511         struct sk_buff *msg;
14512         void *hdr;
14513         struct nlattr *ftm_stats_attr;
14514         int err;
14515
14516         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14517                 return -EOPNOTSUPP;
14518
14519         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14520         if (err)
14521                 return err;
14522
14523         if (!ftm_stats.filled)
14524                 return -ENODATA;
14525
14526         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14527         if (!msg)
14528                 return -ENOMEM;
14529
14530         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14531                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14532         if (!hdr)
14533                 goto nla_put_failure;
14534
14535         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14536                 goto nla_put_failure;
14537
14538         ftm_stats_attr = nla_nest_start_noflag(msg,
14539                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14540         if (!ftm_stats_attr)
14541                 goto nla_put_failure;
14542
14543 #define SET_FTM(field, name, type)                                       \
14544         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14545             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14546                              ftm_stats.field))                           \
14547                 goto nla_put_failure; } while (0)
14548 #define SET_FTM_U64(field, name)                                         \
14549         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14550             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14551                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14552                 goto nla_put_failure; } while (0)
14553
14554         SET_FTM(success_num, SUCCESS_NUM, u32);
14555         SET_FTM(partial_num, PARTIAL_NUM, u32);
14556         SET_FTM(failed_num, FAILED_NUM, u32);
14557         SET_FTM(asap_num, ASAP_NUM, u32);
14558         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14559         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14560         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14561         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14562         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14563 #undef SET_FTM
14564
14565         nla_nest_end(msg, ftm_stats_attr);
14566
14567         genlmsg_end(msg, hdr);
14568         return genlmsg_reply(msg, info);
14569
14570 nla_put_failure:
14571         nlmsg_free(msg);
14572         return -ENOBUFS;
14573 }
14574
14575 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14576 {
14577         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14578         struct cfg80211_update_owe_info owe_info;
14579         struct net_device *dev = info->user_ptr[1];
14580
14581         if (!rdev->ops->update_owe_info)
14582                 return -EOPNOTSUPP;
14583
14584         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14585             !info->attrs[NL80211_ATTR_MAC])
14586                 return -EINVAL;
14587
14588         memset(&owe_info, 0, sizeof(owe_info));
14589         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14590         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14591
14592         if (info->attrs[NL80211_ATTR_IE]) {
14593                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14594                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14595         }
14596
14597         return rdev_update_owe_info(rdev, dev, &owe_info);
14598 }
14599
14600 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14601 {
14602         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14603         struct net_device *dev = info->user_ptr[1];
14604         struct wireless_dev *wdev = dev->ieee80211_ptr;
14605         struct station_info sinfo = {};
14606         const u8 *buf;
14607         size_t len;
14608         u8 *dest;
14609         int err;
14610
14611         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14612                 return -EOPNOTSUPP;
14613
14614         if (!info->attrs[NL80211_ATTR_MAC] ||
14615             !info->attrs[NL80211_ATTR_FRAME]) {
14616                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14617                 return -EINVAL;
14618         }
14619
14620         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14621                 return -EOPNOTSUPP;
14622
14623         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14624         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14625         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14626
14627         if (len < sizeof(struct ethhdr))
14628                 return -EINVAL;
14629
14630         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14631             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14632                 return -EINVAL;
14633
14634         err = rdev_get_station(rdev, dev, dest, &sinfo);
14635         if (err)
14636                 return err;
14637
14638         cfg80211_sinfo_release_content(&sinfo);
14639
14640         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14641 }
14642
14643 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14644                           struct nlattr *attrs[], struct net_device *dev,
14645                           struct cfg80211_tid_cfg *tid_conf,
14646                           struct genl_info *info, const u8 *peer)
14647 {
14648         struct netlink_ext_ack *extack = info->extack;
14649         u64 mask;
14650         int err;
14651
14652         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14653                 return -EINVAL;
14654
14655         tid_conf->config_override =
14656                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14657         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14658
14659         if (tid_conf->config_override) {
14660                 if (rdev->ops->reset_tid_config) {
14661                         err = rdev_reset_tid_config(rdev, dev, peer,
14662                                                     tid_conf->tids);
14663                         if (err)
14664                                 return err;
14665                 } else {
14666                         return -EINVAL;
14667                 }
14668         }
14669
14670         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14671                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14672                 tid_conf->noack =
14673                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14674         }
14675
14676         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14677                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14678                 tid_conf->retry_short =
14679                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14680
14681                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14682                         return -EINVAL;
14683         }
14684
14685         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14686                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14687                 tid_conf->retry_long =
14688                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14689
14690                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14691                         return -EINVAL;
14692         }
14693
14694         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14695                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14696                 tid_conf->ampdu =
14697                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14698         }
14699
14700         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14701                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14702                 tid_conf->rtscts =
14703                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14704         }
14705
14706         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14707                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14708                 tid_conf->amsdu =
14709                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14710         }
14711
14712         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14713                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14714
14715                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14716
14717                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14718                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14719                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14720                                                     &tid_conf->txrate_mask, dev,
14721                                                     true);
14722                         if (err)
14723                                 return err;
14724
14725                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14726                 }
14727                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14728         }
14729
14730         if (peer)
14731                 mask = rdev->wiphy.tid_config_support.peer;
14732         else
14733                 mask = rdev->wiphy.tid_config_support.vif;
14734
14735         if (tid_conf->mask & ~mask) {
14736                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14737                 return -ENOTSUPP;
14738         }
14739
14740         return 0;
14741 }
14742
14743 static int nl80211_set_tid_config(struct sk_buff *skb,
14744                                   struct genl_info *info)
14745 {
14746         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14747         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14748         struct net_device *dev = info->user_ptr[1];
14749         struct cfg80211_tid_config *tid_config;
14750         struct nlattr *tid;
14751         int conf_idx = 0, rem_conf;
14752         int ret = -EINVAL;
14753         u32 num_conf = 0;
14754
14755         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14756                 return -EINVAL;
14757
14758         if (!rdev->ops->set_tid_config)
14759                 return -EOPNOTSUPP;
14760
14761         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14762                             rem_conf)
14763                 num_conf++;
14764
14765         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14766                              GFP_KERNEL);
14767         if (!tid_config)
14768                 return -ENOMEM;
14769
14770         tid_config->n_tid_conf = num_conf;
14771
14772         if (info->attrs[NL80211_ATTR_MAC])
14773                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14774
14775         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14776                             rem_conf) {
14777                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14778                                        tid, NULL, NULL);
14779
14780                 if (ret)
14781                         goto bad_tid_conf;
14782
14783                 ret = parse_tid_conf(rdev, attrs, dev,
14784                                      &tid_config->tid_conf[conf_idx],
14785                                      info, tid_config->peer);
14786                 if (ret)
14787                         goto bad_tid_conf;
14788
14789                 conf_idx++;
14790         }
14791
14792         ret = rdev_set_tid_config(rdev, dev, tid_config);
14793
14794 bad_tid_conf:
14795         kfree(tid_config);
14796         return ret;
14797 }
14798
14799 #define NL80211_FLAG_NEED_WIPHY         0x01
14800 #define NL80211_FLAG_NEED_NETDEV        0x02
14801 #define NL80211_FLAG_NEED_RTNL          0x04
14802 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14803 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14804                                          NL80211_FLAG_CHECK_NETDEV_UP)
14805 #define NL80211_FLAG_NEED_WDEV          0x10
14806 /* If a netdev is associated, it must be UP, P2P must be started */
14807 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14808                                          NL80211_FLAG_CHECK_NETDEV_UP)
14809 #define NL80211_FLAG_CLEAR_SKB          0x20
14810 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
14811
14812 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14813                             struct genl_info *info)
14814 {
14815         struct cfg80211_registered_device *rdev = NULL;
14816         struct wireless_dev *wdev;
14817         struct net_device *dev;
14818
14819         rtnl_lock();
14820         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14821                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14822                 if (IS_ERR(rdev)) {
14823                         rtnl_unlock();
14824                         return PTR_ERR(rdev);
14825                 }
14826                 info->user_ptr[0] = rdev;
14827         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14828                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14829                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
14830                                                   info->attrs);
14831                 if (IS_ERR(wdev)) {
14832                         rtnl_unlock();
14833                         return PTR_ERR(wdev);
14834                 }
14835
14836                 dev = wdev->netdev;
14837                 rdev = wiphy_to_rdev(wdev->wiphy);
14838
14839                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14840                         if (!dev) {
14841                                 rtnl_unlock();
14842                                 return -EINVAL;
14843                         }
14844
14845                         info->user_ptr[1] = dev;
14846                 } else {
14847                         info->user_ptr[1] = wdev;
14848                 }
14849
14850                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14851                     !wdev_running(wdev)) {
14852                         rtnl_unlock();
14853                         return -ENETDOWN;
14854                 }
14855
14856                 if (dev)
14857                         dev_hold(dev);
14858
14859                 info->user_ptr[0] = rdev;
14860         }
14861
14862         if (rdev && !(ops->internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
14863                 wiphy_lock(&rdev->wiphy);
14864                 /* we keep the mutex locked until post_doit */
14865                 __release(&rdev->wiphy.mtx);
14866         }
14867         if (!(ops->internal_flags & NL80211_FLAG_NEED_RTNL))
14868                 rtnl_unlock();
14869
14870         return 0;
14871 }
14872
14873 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14874                               struct genl_info *info)
14875 {
14876         if (info->user_ptr[1]) {
14877                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14878                         struct wireless_dev *wdev = info->user_ptr[1];
14879
14880                         if (wdev->netdev)
14881                                 dev_put(wdev->netdev);
14882                 } else {
14883                         dev_put(info->user_ptr[1]);
14884                 }
14885         }
14886
14887         if (info->user_ptr[0] &&
14888             !(ops->internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
14889                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14890
14891                 /* we kept the mutex locked since pre_doit */
14892                 __acquire(&rdev->wiphy.mtx);
14893                 wiphy_unlock(&rdev->wiphy);
14894         }
14895
14896         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14897                 rtnl_unlock();
14898
14899         /* If needed, clear the netlink message payload from the SKB
14900          * as it might contain key data that shouldn't stick around on
14901          * the heap after the SKB is freed. The netlink message header
14902          * is still needed for further processing, so leave it intact.
14903          */
14904         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14905                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14906
14907                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14908         }
14909 }
14910
14911 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
14912                                      struct cfg80211_sar_specs *sar_specs,
14913                                      struct nlattr *spec[], int index)
14914 {
14915         u32 range_index, i;
14916
14917         if (!sar_specs || !spec)
14918                 return -EINVAL;
14919
14920         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
14921             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
14922                 return -EINVAL;
14923
14924         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
14925
14926         /* check if range_index exceeds num_freq_ranges */
14927         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
14928                 return -EINVAL;
14929
14930         /* check if range_index duplicates */
14931         for (i = 0; i < index; i++) {
14932                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
14933                         return -EINVAL;
14934         }
14935
14936         sar_specs->sub_specs[index].power =
14937                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
14938
14939         sar_specs->sub_specs[index].freq_range_index = range_index;
14940
14941         return 0;
14942 }
14943
14944 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
14945 {
14946         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14947         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
14948         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
14949         struct cfg80211_sar_specs *sar_spec;
14950         enum nl80211_sar_type type;
14951         struct nlattr *spec_list;
14952         u32 specs;
14953         int rem, err;
14954
14955         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
14956                 return -EOPNOTSUPP;
14957
14958         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
14959                 return -EINVAL;
14960
14961         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
14962                          info->attrs[NL80211_ATTR_SAR_SPEC],
14963                          NULL, NULL);
14964
14965         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
14966                 return -EINVAL;
14967
14968         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
14969         if (type != rdev->wiphy.sar_capa->type)
14970                 return -EINVAL;
14971
14972         specs = 0;
14973         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
14974                 specs++;
14975
14976         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
14977                 return -EINVAL;
14978
14979         sar_spec = kzalloc(sizeof(*sar_spec) +
14980                            specs * sizeof(struct cfg80211_sar_sub_specs),
14981                            GFP_KERNEL);
14982         if (!sar_spec)
14983                 return -ENOMEM;
14984
14985         sar_spec->type = type;
14986         specs = 0;
14987         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
14988                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
14989                                  spec_list, NULL, NULL);
14990
14991                 switch (type) {
14992                 case NL80211_SAR_TYPE_POWER:
14993                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
14994                                                       spec, specs)) {
14995                                 err = -EINVAL;
14996                                 goto error;
14997                         }
14998                         break;
14999                 default:
15000                         err = -EINVAL;
15001                         goto error;
15002                 }
15003                 specs++;
15004         }
15005
15006         sar_spec->num_sub_specs = specs;
15007
15008         rdev->cur_cmd_info = info;
15009         err = rdev_set_sar_specs(rdev, sar_spec);
15010         rdev->cur_cmd_info = NULL;
15011 error:
15012         kfree(sar_spec);
15013         return err;
15014 }
15015
15016 static const struct genl_ops nl80211_ops[] = {
15017         {
15018                 .cmd = NL80211_CMD_GET_WIPHY,
15019                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15020                 .doit = nl80211_get_wiphy,
15021                 .dumpit = nl80211_dump_wiphy,
15022                 .done = nl80211_dump_wiphy_done,
15023                 /* can be retrieved by unprivileged users */
15024                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15025         },
15026 };
15027
15028 static const struct genl_small_ops nl80211_small_ops[] = {
15029         {
15030                 .cmd = NL80211_CMD_SET_WIPHY,
15031                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15032                 .doit = nl80211_set_wiphy,
15033                 .flags = GENL_UNS_ADMIN_PERM,
15034         },
15035         {
15036                 .cmd = NL80211_CMD_GET_INTERFACE,
15037                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15038                 .doit = nl80211_get_interface,
15039                 .dumpit = nl80211_dump_interface,
15040                 /* can be retrieved by unprivileged users */
15041                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15042         },
15043         {
15044                 .cmd = NL80211_CMD_SET_INTERFACE,
15045                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15046                 .doit = nl80211_set_interface,
15047                 .flags = GENL_UNS_ADMIN_PERM,
15048                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15049                                   NL80211_FLAG_NEED_RTNL,
15050         },
15051         {
15052                 .cmd = NL80211_CMD_NEW_INTERFACE,
15053                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15054                 .doit = nl80211_new_interface,
15055                 .flags = GENL_UNS_ADMIN_PERM,
15056                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15057                                   NL80211_FLAG_NEED_RTNL |
15058                                   /* we take the wiphy mutex later ourselves */
15059                                   NL80211_FLAG_NO_WIPHY_MTX,
15060         },
15061         {
15062                 .cmd = NL80211_CMD_DEL_INTERFACE,
15063                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15064                 .doit = nl80211_del_interface,
15065                 .flags = GENL_UNS_ADMIN_PERM,
15066                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15067                                   NL80211_FLAG_NEED_RTNL,
15068         },
15069         {
15070                 .cmd = NL80211_CMD_GET_KEY,
15071                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15072                 .doit = nl80211_get_key,
15073                 .flags = GENL_UNS_ADMIN_PERM,
15074                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15075         },
15076         {
15077                 .cmd = NL80211_CMD_SET_KEY,
15078                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15079                 .doit = nl80211_set_key,
15080                 .flags = GENL_UNS_ADMIN_PERM,
15081                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15082                                   NL80211_FLAG_CLEAR_SKB,
15083         },
15084         {
15085                 .cmd = NL80211_CMD_NEW_KEY,
15086                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15087                 .doit = nl80211_new_key,
15088                 .flags = GENL_UNS_ADMIN_PERM,
15089                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15090                                   NL80211_FLAG_CLEAR_SKB,
15091         },
15092         {
15093                 .cmd = NL80211_CMD_DEL_KEY,
15094                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15095                 .doit = nl80211_del_key,
15096                 .flags = GENL_UNS_ADMIN_PERM,
15097                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15098         },
15099         {
15100                 .cmd = NL80211_CMD_SET_BEACON,
15101                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15102                 .flags = GENL_UNS_ADMIN_PERM,
15103                 .doit = nl80211_set_beacon,
15104                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15105         },
15106         {
15107                 .cmd = NL80211_CMD_START_AP,
15108                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15109                 .flags = GENL_UNS_ADMIN_PERM,
15110                 .doit = nl80211_start_ap,
15111                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15112         },
15113         {
15114                 .cmd = NL80211_CMD_STOP_AP,
15115                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15116                 .flags = GENL_UNS_ADMIN_PERM,
15117                 .doit = nl80211_stop_ap,
15118                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15119         },
15120         {
15121                 .cmd = NL80211_CMD_GET_STATION,
15122                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15123                 .doit = nl80211_get_station,
15124                 .dumpit = nl80211_dump_station,
15125                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15126         },
15127         {
15128                 .cmd = NL80211_CMD_SET_STATION,
15129                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15130                 .doit = nl80211_set_station,
15131                 .flags = GENL_UNS_ADMIN_PERM,
15132                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15133         },
15134         {
15135                 .cmd = NL80211_CMD_NEW_STATION,
15136                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15137                 .doit = nl80211_new_station,
15138                 .flags = GENL_UNS_ADMIN_PERM,
15139                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15140         },
15141         {
15142                 .cmd = NL80211_CMD_DEL_STATION,
15143                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15144                 .doit = nl80211_del_station,
15145                 .flags = GENL_UNS_ADMIN_PERM,
15146                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15147         },
15148         {
15149                 .cmd = NL80211_CMD_GET_MPATH,
15150                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15151                 .doit = nl80211_get_mpath,
15152                 .dumpit = nl80211_dump_mpath,
15153                 .flags = GENL_UNS_ADMIN_PERM,
15154                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15155         },
15156         {
15157                 .cmd = NL80211_CMD_GET_MPP,
15158                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15159                 .doit = nl80211_get_mpp,
15160                 .dumpit = nl80211_dump_mpp,
15161                 .flags = GENL_UNS_ADMIN_PERM,
15162                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15163         },
15164         {
15165                 .cmd = NL80211_CMD_SET_MPATH,
15166                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15167                 .doit = nl80211_set_mpath,
15168                 .flags = GENL_UNS_ADMIN_PERM,
15169                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15170         },
15171         {
15172                 .cmd = NL80211_CMD_NEW_MPATH,
15173                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15174                 .doit = nl80211_new_mpath,
15175                 .flags = GENL_UNS_ADMIN_PERM,
15176                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15177         },
15178         {
15179                 .cmd = NL80211_CMD_DEL_MPATH,
15180                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15181                 .doit = nl80211_del_mpath,
15182                 .flags = GENL_UNS_ADMIN_PERM,
15183                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15184         },
15185         {
15186                 .cmd = NL80211_CMD_SET_BSS,
15187                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15188                 .doit = nl80211_set_bss,
15189                 .flags = GENL_UNS_ADMIN_PERM,
15190                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15191         },
15192         {
15193                 .cmd = NL80211_CMD_GET_REG,
15194                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15195                 .doit = nl80211_get_reg_do,
15196                 .dumpit = nl80211_get_reg_dump,
15197                 .internal_flags = 0,
15198                 /* can be retrieved by unprivileged users */
15199         },
15200 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
15201         {
15202                 .cmd = NL80211_CMD_SET_REG,
15203                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15204                 .doit = nl80211_set_reg,
15205                 .flags = GENL_ADMIN_PERM,
15206                 .internal_flags = 0,
15207         },
15208 #endif
15209         {
15210                 .cmd = NL80211_CMD_REQ_SET_REG,
15211                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15212                 .doit = nl80211_req_set_reg,
15213                 .flags = GENL_ADMIN_PERM,
15214         },
15215         {
15216                 .cmd = NL80211_CMD_RELOAD_REGDB,
15217                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15218                 .doit = nl80211_reload_regdb,
15219                 .flags = GENL_ADMIN_PERM,
15220         },
15221         {
15222                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
15223                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15224                 .doit = nl80211_get_mesh_config,
15225                 /* can be retrieved by unprivileged users */
15226                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15227         },
15228         {
15229                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
15230                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15231                 .doit = nl80211_update_mesh_config,
15232                 .flags = GENL_UNS_ADMIN_PERM,
15233                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15234         },
15235         {
15236                 .cmd = NL80211_CMD_TRIGGER_SCAN,
15237                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15238                 .doit = nl80211_trigger_scan,
15239                 .flags = GENL_UNS_ADMIN_PERM,
15240                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15241         },
15242         {
15243                 .cmd = NL80211_CMD_ABORT_SCAN,
15244                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15245                 .doit = nl80211_abort_scan,
15246                 .flags = GENL_UNS_ADMIN_PERM,
15247                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15248         },
15249         {
15250                 .cmd = NL80211_CMD_GET_SCAN,
15251                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15252                 .dumpit = nl80211_dump_scan,
15253         },
15254         {
15255                 .cmd = NL80211_CMD_START_SCHED_SCAN,
15256                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15257                 .doit = nl80211_start_sched_scan,
15258                 .flags = GENL_UNS_ADMIN_PERM,
15259                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15260         },
15261         {
15262                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
15263                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15264                 .doit = nl80211_stop_sched_scan,
15265                 .flags = GENL_UNS_ADMIN_PERM,
15266                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15267         },
15268         {
15269                 .cmd = NL80211_CMD_AUTHENTICATE,
15270                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15271                 .doit = nl80211_authenticate,
15272                 .flags = GENL_UNS_ADMIN_PERM,
15273                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15274                                   0 |
15275                                   NL80211_FLAG_CLEAR_SKB,
15276         },
15277         {
15278                 .cmd = NL80211_CMD_ASSOCIATE,
15279                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15280                 .doit = nl80211_associate,
15281                 .flags = GENL_UNS_ADMIN_PERM,
15282                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15283                                   0 |
15284                                   NL80211_FLAG_CLEAR_SKB,
15285         },
15286         {
15287                 .cmd = NL80211_CMD_DEAUTHENTICATE,
15288                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15289                 .doit = nl80211_deauthenticate,
15290                 .flags = GENL_UNS_ADMIN_PERM,
15291                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15292         },
15293         {
15294                 .cmd = NL80211_CMD_DISASSOCIATE,
15295                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15296                 .doit = nl80211_disassociate,
15297                 .flags = GENL_UNS_ADMIN_PERM,
15298                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15299         },
15300         {
15301                 .cmd = NL80211_CMD_JOIN_IBSS,
15302                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15303                 .doit = nl80211_join_ibss,
15304                 .flags = GENL_UNS_ADMIN_PERM,
15305                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15306         },
15307         {
15308                 .cmd = NL80211_CMD_LEAVE_IBSS,
15309                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15310                 .doit = nl80211_leave_ibss,
15311                 .flags = GENL_UNS_ADMIN_PERM,
15312                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15313         },
15314 #ifdef CONFIG_NL80211_TESTMODE
15315         {
15316                 .cmd = NL80211_CMD_TESTMODE,
15317                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15318                 .doit = nl80211_testmode_do,
15319                 .dumpit = nl80211_testmode_dump,
15320                 .flags = GENL_UNS_ADMIN_PERM,
15321                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15322         },
15323 #endif
15324         {
15325                 .cmd = NL80211_CMD_CONNECT,
15326                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15327                 .doit = nl80211_connect,
15328                 .flags = GENL_UNS_ADMIN_PERM,
15329                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15330                                   0 |
15331                                   NL80211_FLAG_CLEAR_SKB,
15332         },
15333         {
15334                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15335                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15336                 .doit = nl80211_update_connect_params,
15337                 .flags = GENL_ADMIN_PERM,
15338                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15339                                   0 |
15340                                   NL80211_FLAG_CLEAR_SKB,
15341         },
15342         {
15343                 .cmd = NL80211_CMD_DISCONNECT,
15344                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15345                 .doit = nl80211_disconnect,
15346                 .flags = GENL_UNS_ADMIN_PERM,
15347                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15348         },
15349         {
15350                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15351                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15352                 .doit = nl80211_wiphy_netns,
15353                 .flags = GENL_UNS_ADMIN_PERM,
15354                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15355                                   NL80211_FLAG_NEED_RTNL |
15356                                   NL80211_FLAG_NO_WIPHY_MTX,
15357         },
15358         {
15359                 .cmd = NL80211_CMD_GET_SURVEY,
15360                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15361                 .dumpit = nl80211_dump_survey,
15362         },
15363         {
15364                 .cmd = NL80211_CMD_SET_PMKSA,
15365                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15366                 .doit = nl80211_setdel_pmksa,
15367                 .flags = GENL_UNS_ADMIN_PERM,
15368                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15369                                   0 |
15370                                   NL80211_FLAG_CLEAR_SKB,
15371         },
15372         {
15373                 .cmd = NL80211_CMD_DEL_PMKSA,
15374                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15375                 .doit = nl80211_setdel_pmksa,
15376                 .flags = GENL_UNS_ADMIN_PERM,
15377                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15378         },
15379         {
15380                 .cmd = NL80211_CMD_FLUSH_PMKSA,
15381                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15382                 .doit = nl80211_flush_pmksa,
15383                 .flags = GENL_UNS_ADMIN_PERM,
15384                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15385         },
15386         {
15387                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15388                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15389                 .doit = nl80211_remain_on_channel,
15390                 .flags = GENL_UNS_ADMIN_PERM,
15391                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15392         },
15393         {
15394                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15395                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15396                 .doit = nl80211_cancel_remain_on_channel,
15397                 .flags = GENL_UNS_ADMIN_PERM,
15398                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15399         },
15400         {
15401                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15402                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15403                 .doit = nl80211_set_tx_bitrate_mask,
15404                 .flags = GENL_UNS_ADMIN_PERM,
15405                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15406         },
15407         {
15408                 .cmd = NL80211_CMD_REGISTER_FRAME,
15409                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15410                 .doit = nl80211_register_mgmt,
15411                 .flags = GENL_UNS_ADMIN_PERM,
15412                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15413         },
15414         {
15415                 .cmd = NL80211_CMD_FRAME,
15416                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15417                 .doit = nl80211_tx_mgmt,
15418                 .flags = GENL_UNS_ADMIN_PERM,
15419                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15420         },
15421         {
15422                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15423                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15424                 .doit = nl80211_tx_mgmt_cancel_wait,
15425                 .flags = GENL_UNS_ADMIN_PERM,
15426                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15427         },
15428         {
15429                 .cmd = NL80211_CMD_SET_POWER_SAVE,
15430                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15431                 .doit = nl80211_set_power_save,
15432                 .flags = GENL_UNS_ADMIN_PERM,
15433                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15434         },
15435         {
15436                 .cmd = NL80211_CMD_GET_POWER_SAVE,
15437                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15438                 .doit = nl80211_get_power_save,
15439                 /* can be retrieved by unprivileged users */
15440                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15441         },
15442         {
15443                 .cmd = NL80211_CMD_SET_CQM,
15444                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15445                 .doit = nl80211_set_cqm,
15446                 .flags = GENL_UNS_ADMIN_PERM,
15447                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15448         },
15449         {
15450                 .cmd = NL80211_CMD_SET_CHANNEL,
15451                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15452                 .doit = nl80211_set_channel,
15453                 .flags = GENL_UNS_ADMIN_PERM,
15454                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15455         },
15456         {
15457                 .cmd = NL80211_CMD_JOIN_MESH,
15458                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15459                 .doit = nl80211_join_mesh,
15460                 .flags = GENL_UNS_ADMIN_PERM,
15461                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15462         },
15463         {
15464                 .cmd = NL80211_CMD_LEAVE_MESH,
15465                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15466                 .doit = nl80211_leave_mesh,
15467                 .flags = GENL_UNS_ADMIN_PERM,
15468                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15469         },
15470         {
15471                 .cmd = NL80211_CMD_JOIN_OCB,
15472                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15473                 .doit = nl80211_join_ocb,
15474                 .flags = GENL_UNS_ADMIN_PERM,
15475                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15476         },
15477         {
15478                 .cmd = NL80211_CMD_LEAVE_OCB,
15479                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15480                 .doit = nl80211_leave_ocb,
15481                 .flags = GENL_UNS_ADMIN_PERM,
15482                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15483         },
15484 #ifdef CONFIG_PM
15485         {
15486                 .cmd = NL80211_CMD_GET_WOWLAN,
15487                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15488                 .doit = nl80211_get_wowlan,
15489                 /* can be retrieved by unprivileged users */
15490                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15491         },
15492         {
15493                 .cmd = NL80211_CMD_SET_WOWLAN,
15494                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15495                 .doit = nl80211_set_wowlan,
15496                 .flags = GENL_UNS_ADMIN_PERM,
15497                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15498         },
15499 #endif
15500         {
15501                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15502                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15503                 .doit = nl80211_set_rekey_data,
15504                 .flags = GENL_UNS_ADMIN_PERM,
15505                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15506                                   0 |
15507                                   NL80211_FLAG_CLEAR_SKB,
15508         },
15509         {
15510                 .cmd = NL80211_CMD_TDLS_MGMT,
15511                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15512                 .doit = nl80211_tdls_mgmt,
15513                 .flags = GENL_UNS_ADMIN_PERM,
15514                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15515         },
15516         {
15517                 .cmd = NL80211_CMD_TDLS_OPER,
15518                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15519                 .doit = nl80211_tdls_oper,
15520                 .flags = GENL_UNS_ADMIN_PERM,
15521                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15522         },
15523         {
15524                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15525                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15526                 .doit = nl80211_register_unexpected_frame,
15527                 .flags = GENL_UNS_ADMIN_PERM,
15528                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15529         },
15530         {
15531                 .cmd = NL80211_CMD_PROBE_CLIENT,
15532                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15533                 .doit = nl80211_probe_client,
15534                 .flags = GENL_UNS_ADMIN_PERM,
15535                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15536         },
15537         {
15538                 .cmd = NL80211_CMD_REGISTER_BEACONS,
15539                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15540                 .doit = nl80211_register_beacons,
15541                 .flags = GENL_UNS_ADMIN_PERM,
15542                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15543         },
15544         {
15545                 .cmd = NL80211_CMD_SET_NOACK_MAP,
15546                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15547                 .doit = nl80211_set_noack_map,
15548                 .flags = GENL_UNS_ADMIN_PERM,
15549                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15550         },
15551         {
15552                 .cmd = NL80211_CMD_START_P2P_DEVICE,
15553                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15554                 .doit = nl80211_start_p2p_device,
15555                 .flags = GENL_UNS_ADMIN_PERM,
15556                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15557                                   NL80211_FLAG_NEED_RTNL,
15558         },
15559         {
15560                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15561                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15562                 .doit = nl80211_stop_p2p_device,
15563                 .flags = GENL_UNS_ADMIN_PERM,
15564                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15565                                   NL80211_FLAG_NEED_RTNL,
15566         },
15567         {
15568                 .cmd = NL80211_CMD_START_NAN,
15569                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15570                 .doit = nl80211_start_nan,
15571                 .flags = GENL_ADMIN_PERM,
15572                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15573                                   NL80211_FLAG_NEED_RTNL,
15574         },
15575         {
15576                 .cmd = NL80211_CMD_STOP_NAN,
15577                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15578                 .doit = nl80211_stop_nan,
15579                 .flags = GENL_ADMIN_PERM,
15580                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15581                                   NL80211_FLAG_NEED_RTNL,
15582         },
15583         {
15584                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15585                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15586                 .doit = nl80211_nan_add_func,
15587                 .flags = GENL_ADMIN_PERM,
15588                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15589         },
15590         {
15591                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15592                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15593                 .doit = nl80211_nan_del_func,
15594                 .flags = GENL_ADMIN_PERM,
15595                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15596         },
15597         {
15598                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15599                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15600                 .doit = nl80211_nan_change_config,
15601                 .flags = GENL_ADMIN_PERM,
15602                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15603         },
15604         {
15605                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15606                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15607                 .doit = nl80211_set_mcast_rate,
15608                 .flags = GENL_UNS_ADMIN_PERM,
15609                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15610         },
15611         {
15612                 .cmd = NL80211_CMD_SET_MAC_ACL,
15613                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15614                 .doit = nl80211_set_mac_acl,
15615                 .flags = GENL_UNS_ADMIN_PERM,
15616                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15617         },
15618         {
15619                 .cmd = NL80211_CMD_RADAR_DETECT,
15620                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15621                 .doit = nl80211_start_radar_detection,
15622                 .flags = GENL_UNS_ADMIN_PERM,
15623                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15624         },
15625         {
15626                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15627                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15628                 .doit = nl80211_get_protocol_features,
15629         },
15630         {
15631                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15632                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15633                 .doit = nl80211_update_ft_ies,
15634                 .flags = GENL_UNS_ADMIN_PERM,
15635                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15636         },
15637         {
15638                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15639                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15640                 .doit = nl80211_crit_protocol_start,
15641                 .flags = GENL_UNS_ADMIN_PERM,
15642                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15643         },
15644         {
15645                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15646                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15647                 .doit = nl80211_crit_protocol_stop,
15648                 .flags = GENL_UNS_ADMIN_PERM,
15649                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15650         },
15651         {
15652                 .cmd = NL80211_CMD_GET_COALESCE,
15653                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15654                 .doit = nl80211_get_coalesce,
15655                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15656         },
15657         {
15658                 .cmd = NL80211_CMD_SET_COALESCE,
15659                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15660                 .doit = nl80211_set_coalesce,
15661                 .flags = GENL_UNS_ADMIN_PERM,
15662                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15663         },
15664         {
15665                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15666                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15667                 .doit = nl80211_channel_switch,
15668                 .flags = GENL_UNS_ADMIN_PERM,
15669                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15670         },
15671         {
15672                 .cmd = NL80211_CMD_VENDOR,
15673                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15674                 .doit = nl80211_vendor_cmd,
15675                 .dumpit = nl80211_vendor_cmd_dump,
15676                 .flags = GENL_UNS_ADMIN_PERM,
15677                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15678                                   0 |
15679                                   NL80211_FLAG_CLEAR_SKB,
15680         },
15681         {
15682                 .cmd = NL80211_CMD_SET_QOS_MAP,
15683                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15684                 .doit = nl80211_set_qos_map,
15685                 .flags = GENL_UNS_ADMIN_PERM,
15686                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15687         },
15688         {
15689                 .cmd = NL80211_CMD_ADD_TX_TS,
15690                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15691                 .doit = nl80211_add_tx_ts,
15692                 .flags = GENL_UNS_ADMIN_PERM,
15693                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15694         },
15695         {
15696                 .cmd = NL80211_CMD_DEL_TX_TS,
15697                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15698                 .doit = nl80211_del_tx_ts,
15699                 .flags = GENL_UNS_ADMIN_PERM,
15700                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15701         },
15702         {
15703                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15704                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15705                 .doit = nl80211_tdls_channel_switch,
15706                 .flags = GENL_UNS_ADMIN_PERM,
15707                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15708         },
15709         {
15710                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15711                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15712                 .doit = nl80211_tdls_cancel_channel_switch,
15713                 .flags = GENL_UNS_ADMIN_PERM,
15714                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15715         },
15716         {
15717                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15718                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15719                 .doit = nl80211_set_multicast_to_unicast,
15720                 .flags = GENL_UNS_ADMIN_PERM,
15721                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15722         },
15723         {
15724                 .cmd = NL80211_CMD_SET_PMK,
15725                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15726                 .doit = nl80211_set_pmk,
15727                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15728                                   0 |
15729                                   NL80211_FLAG_CLEAR_SKB,
15730         },
15731         {
15732                 .cmd = NL80211_CMD_DEL_PMK,
15733                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15734                 .doit = nl80211_del_pmk,
15735                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15736         },
15737         {
15738                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15739                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15740                 .doit = nl80211_external_auth,
15741                 .flags = GENL_ADMIN_PERM,
15742                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15743         },
15744         {
15745                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15746                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15747                 .doit = nl80211_tx_control_port,
15748                 .flags = GENL_UNS_ADMIN_PERM,
15749                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15750         },
15751         {
15752                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15753                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15754                 .doit = nl80211_get_ftm_responder_stats,
15755                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15756         },
15757         {
15758                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15759                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15760                 .doit = nl80211_pmsr_start,
15761                 .flags = GENL_UNS_ADMIN_PERM,
15762                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15763         },
15764         {
15765                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15766                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15767                 .doit = nl80211_notify_radar_detection,
15768                 .flags = GENL_UNS_ADMIN_PERM,
15769                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15770         },
15771         {
15772                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15773                 .doit = nl80211_update_owe_info,
15774                 .flags = GENL_ADMIN_PERM,
15775                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15776         },
15777         {
15778                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15779                 .doit = nl80211_probe_mesh_link,
15780                 .flags = GENL_UNS_ADMIN_PERM,
15781                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15782         },
15783         {
15784                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15785                 .doit = nl80211_set_tid_config,
15786                 .flags = GENL_UNS_ADMIN_PERM,
15787                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15788         },
15789         {
15790                 .cmd = NL80211_CMD_SET_SAR_SPECS,
15791                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15792                 .doit = nl80211_set_sar_specs,
15793                 .flags = GENL_UNS_ADMIN_PERM,
15794                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15795                                   NL80211_FLAG_NEED_RTNL,
15796         },
15797 };
15798
15799 static struct genl_family nl80211_fam __ro_after_init = {
15800         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15801         .hdrsize = 0,                   /* no private header */
15802         .version = 1,                   /* no particular meaning now */
15803         .maxattr = NL80211_ATTR_MAX,
15804         .policy = nl80211_policy,
15805         .netnsok = true,
15806         .pre_doit = nl80211_pre_doit,
15807         .post_doit = nl80211_post_doit,
15808         .module = THIS_MODULE,
15809         .ops = nl80211_ops,
15810         .n_ops = ARRAY_SIZE(nl80211_ops),
15811         .small_ops = nl80211_small_ops,
15812         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15813         .mcgrps = nl80211_mcgrps,
15814         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15815         .parallel_ops = true,
15816 };
15817
15818 /* notification functions */
15819
15820 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15821                           enum nl80211_commands cmd)
15822 {
15823         struct sk_buff *msg;
15824         struct nl80211_dump_wiphy_state state = {};
15825
15826         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15827                 cmd != NL80211_CMD_DEL_WIPHY);
15828
15829         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15830         if (!msg)
15831                 return;
15832
15833         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15834                 nlmsg_free(msg);
15835                 return;
15836         }
15837
15838         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15839                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15840 }
15841
15842 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15843                                 struct wireless_dev *wdev,
15844                                 enum nl80211_commands cmd)
15845 {
15846         struct sk_buff *msg;
15847
15848         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15849         if (!msg)
15850                 return;
15851
15852         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15853                 nlmsg_free(msg);
15854                 return;
15855         }
15856
15857         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15858                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15859 }
15860
15861 static int nl80211_add_scan_req(struct sk_buff *msg,
15862                                 struct cfg80211_registered_device *rdev)
15863 {
15864         struct cfg80211_scan_request *req = rdev->scan_req;
15865         struct nlattr *nest;
15866         int i;
15867         struct cfg80211_scan_info *info;
15868
15869         if (WARN_ON(!req))
15870                 return 0;
15871
15872         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15873         if (!nest)
15874                 goto nla_put_failure;
15875         for (i = 0; i < req->n_ssids; i++) {
15876                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15877                         goto nla_put_failure;
15878         }
15879         nla_nest_end(msg, nest);
15880
15881         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15882                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15883                 if (!nest)
15884                         goto nla_put_failure;
15885                 for (i = 0; i < req->n_channels; i++) {
15886                         if (nla_put_u32(msg, i,
15887                                    ieee80211_channel_to_khz(req->channels[i])))
15888                                 goto nla_put_failure;
15889                 }
15890                 nla_nest_end(msg, nest);
15891         } else {
15892                 nest = nla_nest_start_noflag(msg,
15893                                              NL80211_ATTR_SCAN_FREQUENCIES);
15894                 if (!nest)
15895                         goto nla_put_failure;
15896                 for (i = 0; i < req->n_channels; i++) {
15897                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15898                                 goto nla_put_failure;
15899                 }
15900                 nla_nest_end(msg, nest);
15901         }
15902
15903         if (req->ie &&
15904             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15905                 goto nla_put_failure;
15906
15907         if (req->flags &&
15908             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15909                 goto nla_put_failure;
15910
15911         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15912                 &rdev->scan_req->info;
15913         if (info->scan_start_tsf &&
15914             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15915                                info->scan_start_tsf, NL80211_BSS_PAD) ||
15916              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15917                      info->tsf_bssid)))
15918                 goto nla_put_failure;
15919
15920         return 0;
15921  nla_put_failure:
15922         return -ENOBUFS;
15923 }
15924
15925 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15926                                  struct cfg80211_registered_device *rdev,
15927                                  struct wireless_dev *wdev,
15928                                  u32 portid, u32 seq, int flags,
15929                                  u32 cmd)
15930 {
15931         void *hdr;
15932
15933         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15934         if (!hdr)
15935                 return -1;
15936
15937         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15938             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15939                                          wdev->netdev->ifindex)) ||
15940             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15941                               NL80211_ATTR_PAD))
15942                 goto nla_put_failure;
15943
15944         /* ignore errors and send incomplete event anyway */
15945         nl80211_add_scan_req(msg, rdev);
15946
15947         genlmsg_end(msg, hdr);
15948         return 0;
15949
15950  nla_put_failure:
15951         genlmsg_cancel(msg, hdr);
15952         return -EMSGSIZE;
15953 }
15954
15955 static int
15956 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15957                             struct cfg80211_sched_scan_request *req, u32 cmd)
15958 {
15959         void *hdr;
15960
15961         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15962         if (!hdr)
15963                 return -1;
15964
15965         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15966                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15967             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15968             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15969                               NL80211_ATTR_PAD))
15970                 goto nla_put_failure;
15971
15972         genlmsg_end(msg, hdr);
15973         return 0;
15974
15975  nla_put_failure:
15976         genlmsg_cancel(msg, hdr);
15977         return -EMSGSIZE;
15978 }
15979
15980 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15981                              struct wireless_dev *wdev)
15982 {
15983         struct sk_buff *msg;
15984
15985         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15986         if (!msg)
15987                 return;
15988
15989         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15990                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15991                 nlmsg_free(msg);
15992                 return;
15993         }
15994
15995         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15996                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15997 }
15998
15999 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
16000                                        struct wireless_dev *wdev, bool aborted)
16001 {
16002         struct sk_buff *msg;
16003
16004         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16005         if (!msg)
16006                 return NULL;
16007
16008         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
16009                                   aborted ? NL80211_CMD_SCAN_ABORTED :
16010                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
16011                 nlmsg_free(msg);
16012                 return NULL;
16013         }
16014
16015         return msg;
16016 }
16017
16018 /* send message created by nl80211_build_scan_msg() */
16019 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
16020                            struct sk_buff *msg)
16021 {
16022         if (!msg)
16023                 return;
16024
16025         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16026                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16027 }
16028
16029 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
16030 {
16031         struct sk_buff *msg;
16032
16033         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16034         if (!msg)
16035                 return;
16036
16037         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
16038                 nlmsg_free(msg);
16039                 return;
16040         }
16041
16042         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
16043                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16044 }
16045
16046 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
16047                                           struct regulatory_request *request)
16048 {
16049         /* Userspace can always count this one always being set */
16050         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
16051                 goto nla_put_failure;
16052
16053         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
16054                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16055                                NL80211_REGDOM_TYPE_WORLD))
16056                         goto nla_put_failure;
16057         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
16058                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16059                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
16060                         goto nla_put_failure;
16061         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
16062                    request->intersect) {
16063                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16064                                NL80211_REGDOM_TYPE_INTERSECTION))
16065                         goto nla_put_failure;
16066         } else {
16067                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16068                                NL80211_REGDOM_TYPE_COUNTRY) ||
16069                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
16070                                    request->alpha2))
16071                         goto nla_put_failure;
16072         }
16073
16074         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
16075                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
16076
16077                 if (wiphy &&
16078                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
16079                         goto nla_put_failure;
16080
16081                 if (wiphy &&
16082                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
16083                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
16084                         goto nla_put_failure;
16085         }
16086
16087         return true;
16088
16089 nla_put_failure:
16090         return false;
16091 }
16092
16093 /*
16094  * This can happen on global regulatory changes or device specific settings
16095  * based on custom regulatory domains.
16096  */
16097 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
16098                                      struct regulatory_request *request)
16099 {
16100         struct sk_buff *msg;
16101         void *hdr;
16102
16103         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16104         if (!msg)
16105                 return;
16106
16107         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
16108         if (!hdr)
16109                 goto nla_put_failure;
16110
16111         if (!nl80211_reg_change_event_fill(msg, request))
16112                 goto nla_put_failure;
16113
16114         genlmsg_end(msg, hdr);
16115
16116         rcu_read_lock();
16117         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16118                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16119         rcu_read_unlock();
16120
16121         return;
16122
16123 nla_put_failure:
16124         nlmsg_free(msg);
16125 }
16126
16127 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
16128                                     struct net_device *netdev,
16129                                     const u8 *buf, size_t len,
16130                                     enum nl80211_commands cmd, gfp_t gfp,
16131                                     int uapsd_queues, const u8 *req_ies,
16132                                     size_t req_ies_len, bool reconnect)
16133 {
16134         struct sk_buff *msg;
16135         void *hdr;
16136
16137         msg = nlmsg_new(100 + len + req_ies_len, gfp);
16138         if (!msg)
16139                 return;
16140
16141         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16142         if (!hdr) {
16143                 nlmsg_free(msg);
16144                 return;
16145         }
16146
16147         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16148             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16149             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16150             (req_ies &&
16151              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
16152                 goto nla_put_failure;
16153
16154         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
16155                 goto nla_put_failure;
16156
16157         if (uapsd_queues >= 0) {
16158                 struct nlattr *nla_wmm =
16159                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
16160                 if (!nla_wmm)
16161                         goto nla_put_failure;
16162
16163                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
16164                                uapsd_queues))
16165                         goto nla_put_failure;
16166
16167                 nla_nest_end(msg, nla_wmm);
16168         }
16169
16170         genlmsg_end(msg, hdr);
16171
16172         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16173                                 NL80211_MCGRP_MLME, gfp);
16174         return;
16175
16176  nla_put_failure:
16177         nlmsg_free(msg);
16178 }
16179
16180 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
16181                           struct net_device *netdev, const u8 *buf,
16182                           size_t len, gfp_t gfp)
16183 {
16184         nl80211_send_mlme_event(rdev, netdev, buf, len,
16185                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
16186                                 false);
16187 }
16188
16189 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
16190                            struct net_device *netdev, const u8 *buf,
16191                            size_t len, gfp_t gfp, int uapsd_queues,
16192                            const u8 *req_ies, size_t req_ies_len)
16193 {
16194         nl80211_send_mlme_event(rdev, netdev, buf, len,
16195                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
16196                                 req_ies, req_ies_len, false);
16197 }
16198
16199 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
16200                          struct net_device *netdev, const u8 *buf,
16201                          size_t len, bool reconnect, gfp_t gfp)
16202 {
16203         nl80211_send_mlme_event(rdev, netdev, buf, len,
16204                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
16205                                 reconnect);
16206 }
16207
16208 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
16209                            struct net_device *netdev, const u8 *buf,
16210                            size_t len, bool reconnect, gfp_t gfp)
16211 {
16212         nl80211_send_mlme_event(rdev, netdev, buf, len,
16213                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
16214                                 reconnect);
16215 }
16216
16217 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
16218                                   size_t len)
16219 {
16220         struct wireless_dev *wdev = dev->ieee80211_ptr;
16221         struct wiphy *wiphy = wdev->wiphy;
16222         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16223         const struct ieee80211_mgmt *mgmt = (void *)buf;
16224         u32 cmd;
16225
16226         if (WARN_ON(len < 2))
16227                 return;
16228
16229         if (ieee80211_is_deauth(mgmt->frame_control)) {
16230                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
16231         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
16232                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
16233         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
16234                 if (wdev->unprot_beacon_reported &&
16235                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
16236                         return;
16237                 cmd = NL80211_CMD_UNPROT_BEACON;
16238                 wdev->unprot_beacon_reported = jiffies;
16239         } else {
16240                 return;
16241         }
16242
16243         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
16244         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
16245                                 NULL, 0, false);
16246 }
16247 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
16248
16249 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
16250                                       struct net_device *netdev, int cmd,
16251                                       const u8 *addr, gfp_t gfp)
16252 {
16253         struct sk_buff *msg;
16254         void *hdr;
16255
16256         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16257         if (!msg)
16258                 return;
16259
16260         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16261         if (!hdr) {
16262                 nlmsg_free(msg);
16263                 return;
16264         }
16265
16266         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16267             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16268             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16269             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16270                 goto nla_put_failure;
16271
16272         genlmsg_end(msg, hdr);
16273
16274         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16275                                 NL80211_MCGRP_MLME, gfp);
16276         return;
16277
16278  nla_put_failure:
16279         nlmsg_free(msg);
16280 }
16281
16282 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16283                                struct net_device *netdev, const u8 *addr,
16284                                gfp_t gfp)
16285 {
16286         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16287                                   addr, gfp);
16288 }
16289
16290 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16291                                 struct net_device *netdev, const u8 *addr,
16292                                 gfp_t gfp)
16293 {
16294         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16295                                   addr, gfp);
16296 }
16297
16298 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16299                                  struct net_device *netdev,
16300                                  struct cfg80211_connect_resp_params *cr,
16301                                  gfp_t gfp)
16302 {
16303         struct sk_buff *msg;
16304         void *hdr;
16305
16306         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16307                         cr->fils.kek_len + cr->fils.pmk_len +
16308                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16309         if (!msg)
16310                 return;
16311
16312         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16313         if (!hdr) {
16314                 nlmsg_free(msg);
16315                 return;
16316         }
16317
16318         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16319             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16320             (cr->bssid &&
16321              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16322             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16323                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16324                         cr->status) ||
16325             (cr->status < 0 &&
16326              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16327               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16328                           cr->timeout_reason))) ||
16329             (cr->req_ie &&
16330              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16331             (cr->resp_ie &&
16332              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16333                      cr->resp_ie)) ||
16334             (cr->fils.update_erp_next_seq_num &&
16335              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16336                          cr->fils.erp_next_seq_num)) ||
16337             (cr->status == WLAN_STATUS_SUCCESS &&
16338              ((cr->fils.kek &&
16339                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16340                        cr->fils.kek)) ||
16341               (cr->fils.pmk &&
16342                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16343               (cr->fils.pmkid &&
16344                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16345                 goto nla_put_failure;
16346
16347         genlmsg_end(msg, hdr);
16348
16349         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16350                                 NL80211_MCGRP_MLME, gfp);
16351         return;
16352
16353  nla_put_failure:
16354         nlmsg_free(msg);
16355 }
16356
16357 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16358                          struct net_device *netdev,
16359                          struct cfg80211_roam_info *info, gfp_t gfp)
16360 {
16361         struct sk_buff *msg;
16362         void *hdr;
16363         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16364
16365         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16366                         info->fils.kek_len + info->fils.pmk_len +
16367                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16368         if (!msg)
16369                 return;
16370
16371         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16372         if (!hdr) {
16373                 nlmsg_free(msg);
16374                 return;
16375         }
16376
16377         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16378             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16379             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16380             (info->req_ie &&
16381              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16382                      info->req_ie)) ||
16383             (info->resp_ie &&
16384              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16385                      info->resp_ie)) ||
16386             (info->fils.update_erp_next_seq_num &&
16387              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16388                          info->fils.erp_next_seq_num)) ||
16389             (info->fils.kek &&
16390              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16391                      info->fils.kek)) ||
16392             (info->fils.pmk &&
16393              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16394             (info->fils.pmkid &&
16395              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16396                 goto nla_put_failure;
16397
16398         genlmsg_end(msg, hdr);
16399
16400         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16401                                 NL80211_MCGRP_MLME, gfp);
16402         return;
16403
16404  nla_put_failure:
16405         nlmsg_free(msg);
16406 }
16407
16408 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16409                                   struct net_device *netdev, const u8 *bssid)
16410 {
16411         struct sk_buff *msg;
16412         void *hdr;
16413
16414         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16415         if (!msg)
16416                 return;
16417
16418         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16419         if (!hdr) {
16420                 nlmsg_free(msg);
16421                 return;
16422         }
16423
16424         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16425             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16426             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16427                 goto nla_put_failure;
16428
16429         genlmsg_end(msg, hdr);
16430
16431         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16432                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16433         return;
16434
16435  nla_put_failure:
16436         nlmsg_free(msg);
16437 }
16438
16439 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16440                                struct net_device *netdev, u16 reason,
16441                                const u8 *ie, size_t ie_len, bool from_ap)
16442 {
16443         struct sk_buff *msg;
16444         void *hdr;
16445
16446         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16447         if (!msg)
16448                 return;
16449
16450         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16451         if (!hdr) {
16452                 nlmsg_free(msg);
16453                 return;
16454         }
16455
16456         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16457             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16458             (reason &&
16459              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16460             (from_ap &&
16461              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16462             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16463                 goto nla_put_failure;
16464
16465         genlmsg_end(msg, hdr);
16466
16467         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16468                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16469         return;
16470
16471  nla_put_failure:
16472         nlmsg_free(msg);
16473 }
16474
16475 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16476                              struct net_device *netdev, const u8 *bssid,
16477                              gfp_t gfp)
16478 {
16479         struct sk_buff *msg;
16480         void *hdr;
16481
16482         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16483         if (!msg)
16484                 return;
16485
16486         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16487         if (!hdr) {
16488                 nlmsg_free(msg);
16489                 return;
16490         }
16491
16492         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16493             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16494             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16495                 goto nla_put_failure;
16496
16497         genlmsg_end(msg, hdr);
16498
16499         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16500                                 NL80211_MCGRP_MLME, gfp);
16501         return;
16502
16503  nla_put_failure:
16504         nlmsg_free(msg);
16505 }
16506
16507 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16508                                         const u8 *ie, u8 ie_len,
16509                                         int sig_dbm, gfp_t gfp)
16510 {
16511         struct wireless_dev *wdev = dev->ieee80211_ptr;
16512         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16513         struct sk_buff *msg;
16514         void *hdr;
16515
16516         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16517                 return;
16518
16519         trace_cfg80211_notify_new_peer_candidate(dev, addr);
16520
16521         msg = nlmsg_new(100 + ie_len, gfp);
16522         if (!msg)
16523                 return;
16524
16525         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16526         if (!hdr) {
16527                 nlmsg_free(msg);
16528                 return;
16529         }
16530
16531         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16532             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16533             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16534             (ie_len && ie &&
16535              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16536             (sig_dbm &&
16537              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16538                 goto nla_put_failure;
16539
16540         genlmsg_end(msg, hdr);
16541
16542         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16543                                 NL80211_MCGRP_MLME, gfp);
16544         return;
16545
16546  nla_put_failure:
16547         nlmsg_free(msg);
16548 }
16549 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16550
16551 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16552                                  struct net_device *netdev, const u8 *addr,
16553                                  enum nl80211_key_type key_type, int key_id,
16554                                  const u8 *tsc, gfp_t gfp)
16555 {
16556         struct sk_buff *msg;
16557         void *hdr;
16558
16559         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16560         if (!msg)
16561                 return;
16562
16563         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16564         if (!hdr) {
16565                 nlmsg_free(msg);
16566                 return;
16567         }
16568
16569         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16570             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16571             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16572             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16573             (key_id != -1 &&
16574              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16575             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16576                 goto nla_put_failure;
16577
16578         genlmsg_end(msg, hdr);
16579
16580         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16581                                 NL80211_MCGRP_MLME, gfp);
16582         return;
16583
16584  nla_put_failure:
16585         nlmsg_free(msg);
16586 }
16587
16588 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16589                                     struct ieee80211_channel *channel_before,
16590                                     struct ieee80211_channel *channel_after)
16591 {
16592         struct sk_buff *msg;
16593         void *hdr;
16594         struct nlattr *nl_freq;
16595
16596         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16597         if (!msg)
16598                 return;
16599
16600         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16601         if (!hdr) {
16602                 nlmsg_free(msg);
16603                 return;
16604         }
16605
16606         /*
16607          * Since we are applying the beacon hint to a wiphy we know its
16608          * wiphy_idx is valid
16609          */
16610         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16611                 goto nla_put_failure;
16612
16613         /* Before */
16614         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16615         if (!nl_freq)
16616                 goto nla_put_failure;
16617
16618         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16619                 goto nla_put_failure;
16620         nla_nest_end(msg, nl_freq);
16621
16622         /* After */
16623         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16624         if (!nl_freq)
16625                 goto nla_put_failure;
16626
16627         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16628                 goto nla_put_failure;
16629         nla_nest_end(msg, nl_freq);
16630
16631         genlmsg_end(msg, hdr);
16632
16633         rcu_read_lock();
16634         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16635                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16636         rcu_read_unlock();
16637
16638         return;
16639
16640 nla_put_failure:
16641         nlmsg_free(msg);
16642 }
16643
16644 static void nl80211_send_remain_on_chan_event(
16645         int cmd, struct cfg80211_registered_device *rdev,
16646         struct wireless_dev *wdev, u64 cookie,
16647         struct ieee80211_channel *chan,
16648         unsigned int duration, gfp_t gfp)
16649 {
16650         struct sk_buff *msg;
16651         void *hdr;
16652
16653         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16654         if (!msg)
16655                 return;
16656
16657         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16658         if (!hdr) {
16659                 nlmsg_free(msg);
16660                 return;
16661         }
16662
16663         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16664             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16665                                          wdev->netdev->ifindex)) ||
16666             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16667                               NL80211_ATTR_PAD) ||
16668             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16669             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16670                         NL80211_CHAN_NO_HT) ||
16671             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16672                               NL80211_ATTR_PAD))
16673                 goto nla_put_failure;
16674
16675         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16676             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16677                 goto nla_put_failure;
16678
16679         genlmsg_end(msg, hdr);
16680
16681         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16682                                 NL80211_MCGRP_MLME, gfp);
16683         return;
16684
16685  nla_put_failure:
16686         nlmsg_free(msg);
16687 }
16688
16689 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16690                                struct ieee80211_channel *chan,
16691                                unsigned int duration, gfp_t gfp)
16692 {
16693         struct wiphy *wiphy = wdev->wiphy;
16694         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16695
16696         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16697         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16698                                           rdev, wdev, cookie, chan,
16699                                           duration, gfp);
16700 }
16701 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16702
16703 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16704                                         struct ieee80211_channel *chan,
16705                                         gfp_t gfp)
16706 {
16707         struct wiphy *wiphy = wdev->wiphy;
16708         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16709
16710         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16711         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16712                                           rdev, wdev, cookie, chan, 0, gfp);
16713 }
16714 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16715
16716 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16717                                         struct ieee80211_channel *chan,
16718                                         gfp_t gfp)
16719 {
16720         struct wiphy *wiphy = wdev->wiphy;
16721         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16722
16723         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16724         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16725                                           rdev, wdev, cookie, chan, 0, gfp);
16726 }
16727 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16728
16729 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16730                       struct station_info *sinfo, gfp_t gfp)
16731 {
16732         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16733         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16734         struct sk_buff *msg;
16735
16736         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16737
16738         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16739         if (!msg)
16740                 return;
16741
16742         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16743                                  rdev, dev, mac_addr, sinfo) < 0) {
16744                 nlmsg_free(msg);
16745                 return;
16746         }
16747
16748         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16749                                 NL80211_MCGRP_MLME, gfp);
16750 }
16751 EXPORT_SYMBOL(cfg80211_new_sta);
16752
16753 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16754                             struct station_info *sinfo, gfp_t gfp)
16755 {
16756         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16757         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16758         struct sk_buff *msg;
16759         struct station_info empty_sinfo = {};
16760
16761         if (!sinfo)
16762                 sinfo = &empty_sinfo;
16763
16764         trace_cfg80211_del_sta(dev, mac_addr);
16765
16766         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16767         if (!msg) {
16768                 cfg80211_sinfo_release_content(sinfo);
16769                 return;
16770         }
16771
16772         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16773                                  rdev, dev, mac_addr, sinfo) < 0) {
16774                 nlmsg_free(msg);
16775                 return;
16776         }
16777
16778         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16779                                 NL80211_MCGRP_MLME, gfp);
16780 }
16781 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16782
16783 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16784                           enum nl80211_connect_failed_reason reason,
16785                           gfp_t gfp)
16786 {
16787         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16788         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16789         struct sk_buff *msg;
16790         void *hdr;
16791
16792         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16793         if (!msg)
16794                 return;
16795
16796         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16797         if (!hdr) {
16798                 nlmsg_free(msg);
16799                 return;
16800         }
16801
16802         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16803             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16804             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16805                 goto nla_put_failure;
16806
16807         genlmsg_end(msg, hdr);
16808
16809         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16810                                 NL80211_MCGRP_MLME, gfp);
16811         return;
16812
16813  nla_put_failure:
16814         nlmsg_free(msg);
16815 }
16816 EXPORT_SYMBOL(cfg80211_conn_failed);
16817
16818 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16819                                        const u8 *addr, gfp_t gfp)
16820 {
16821         struct wireless_dev *wdev = dev->ieee80211_ptr;
16822         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16823         struct sk_buff *msg;
16824         void *hdr;
16825         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16826
16827         if (!nlportid)
16828                 return false;
16829
16830         msg = nlmsg_new(100, gfp);
16831         if (!msg)
16832                 return true;
16833
16834         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16835         if (!hdr) {
16836                 nlmsg_free(msg);
16837                 return true;
16838         }
16839
16840         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16841             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16842             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16843                 goto nla_put_failure;
16844
16845         genlmsg_end(msg, hdr);
16846         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16847         return true;
16848
16849  nla_put_failure:
16850         nlmsg_free(msg);
16851         return true;
16852 }
16853
16854 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16855                                 const u8 *addr, gfp_t gfp)
16856 {
16857         struct wireless_dev *wdev = dev->ieee80211_ptr;
16858         bool ret;
16859
16860         trace_cfg80211_rx_spurious_frame(dev, addr);
16861
16862         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16863                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16864                 trace_cfg80211_return_bool(false);
16865                 return false;
16866         }
16867         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16868                                          addr, gfp);
16869         trace_cfg80211_return_bool(ret);
16870         return ret;
16871 }
16872 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16873
16874 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16875                                         const u8 *addr, gfp_t gfp)
16876 {
16877         struct wireless_dev *wdev = dev->ieee80211_ptr;
16878         bool ret;
16879
16880         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16881
16882         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16883                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16884                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16885                 trace_cfg80211_return_bool(false);
16886                 return false;
16887         }
16888         ret = __nl80211_unexpected_frame(dev,
16889                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16890                                          addr, gfp);
16891         trace_cfg80211_return_bool(ret);
16892         return ret;
16893 }
16894 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16895
16896 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16897                       struct wireless_dev *wdev, u32 nlportid,
16898                       int freq, int sig_dbm,
16899                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16900 {
16901         struct net_device *netdev = wdev->netdev;
16902         struct sk_buff *msg;
16903         void *hdr;
16904
16905         msg = nlmsg_new(100 + len, gfp);
16906         if (!msg)
16907                 return -ENOMEM;
16908
16909         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16910         if (!hdr) {
16911                 nlmsg_free(msg);
16912                 return -ENOMEM;
16913         }
16914
16915         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16916             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16917                                         netdev->ifindex)) ||
16918             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16919                               NL80211_ATTR_PAD) ||
16920             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16921             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16922             (sig_dbm &&
16923              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16924             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16925             (flags &&
16926              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16927                 goto nla_put_failure;
16928
16929         genlmsg_end(msg, hdr);
16930
16931         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16932
16933  nla_put_failure:
16934         nlmsg_free(msg);
16935         return -ENOBUFS;
16936 }
16937
16938 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16939                                     const u8 *buf, size_t len, bool ack,
16940                                     gfp_t gfp, enum nl80211_commands command)
16941 {
16942         struct wiphy *wiphy = wdev->wiphy;
16943         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16944         struct net_device *netdev = wdev->netdev;
16945         struct sk_buff *msg;
16946         void *hdr;
16947
16948         if (command == NL80211_CMD_FRAME_TX_STATUS)
16949                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16950         else
16951                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16952
16953         msg = nlmsg_new(100 + len, gfp);
16954         if (!msg)
16955                 return;
16956
16957         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16958         if (!hdr) {
16959                 nlmsg_free(msg);
16960                 return;
16961         }
16962
16963         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16964             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16965                                    netdev->ifindex)) ||
16966             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16967                               NL80211_ATTR_PAD) ||
16968             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16969             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16970                               NL80211_ATTR_PAD) ||
16971             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16972                 goto nla_put_failure;
16973
16974         genlmsg_end(msg, hdr);
16975
16976         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16977                                 NL80211_MCGRP_MLME, gfp);
16978         return;
16979
16980 nla_put_failure:
16981         nlmsg_free(msg);
16982 }
16983
16984 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16985                                      const u8 *buf, size_t len, bool ack,
16986                                      gfp_t gfp)
16987 {
16988         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16989                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16990 }
16991 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16992
16993 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16994                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16995 {
16996         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16997                                 NL80211_CMD_FRAME_TX_STATUS);
16998 }
16999 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
17000
17001 static int __nl80211_rx_control_port(struct net_device *dev,
17002                                      struct sk_buff *skb,
17003                                      bool unencrypted, gfp_t gfp)
17004 {
17005         struct wireless_dev *wdev = dev->ieee80211_ptr;
17006         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17007         struct ethhdr *ehdr = eth_hdr(skb);
17008         const u8 *addr = ehdr->h_source;
17009         u16 proto = be16_to_cpu(skb->protocol);
17010         struct sk_buff *msg;
17011         void *hdr;
17012         struct nlattr *frame;
17013
17014         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
17015
17016         if (!nlportid)
17017                 return -ENOENT;
17018
17019         msg = nlmsg_new(100 + skb->len, gfp);
17020         if (!msg)
17021                 return -ENOMEM;
17022
17023         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
17024         if (!hdr) {
17025                 nlmsg_free(msg);
17026                 return -ENOBUFS;
17027         }
17028
17029         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17030             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17031             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17032                               NL80211_ATTR_PAD) ||
17033             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17034             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
17035             (unencrypted && nla_put_flag(msg,
17036                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
17037                 goto nla_put_failure;
17038
17039         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
17040         if (!frame)
17041                 goto nla_put_failure;
17042
17043         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
17044         genlmsg_end(msg, hdr);
17045
17046         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17047
17048  nla_put_failure:
17049         nlmsg_free(msg);
17050         return -ENOBUFS;
17051 }
17052
17053 bool cfg80211_rx_control_port(struct net_device *dev,
17054                               struct sk_buff *skb, bool unencrypted)
17055 {
17056         int ret;
17057
17058         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
17059         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
17060         trace_cfg80211_return_bool(ret == 0);
17061         return ret == 0;
17062 }
17063 EXPORT_SYMBOL(cfg80211_rx_control_port);
17064
17065 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
17066                                             const char *mac, gfp_t gfp)
17067 {
17068         struct wireless_dev *wdev = dev->ieee80211_ptr;
17069         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17070         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17071         void **cb;
17072
17073         if (!msg)
17074                 return NULL;
17075
17076         cb = (void **)msg->cb;
17077
17078         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
17079         if (!cb[0]) {
17080                 nlmsg_free(msg);
17081                 return NULL;
17082         }
17083
17084         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17085             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17086                 goto nla_put_failure;
17087
17088         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17089                 goto nla_put_failure;
17090
17091         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
17092         if (!cb[1])
17093                 goto nla_put_failure;
17094
17095         cb[2] = rdev;
17096
17097         return msg;
17098  nla_put_failure:
17099         nlmsg_free(msg);
17100         return NULL;
17101 }
17102
17103 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
17104 {
17105         void **cb = (void **)msg->cb;
17106         struct cfg80211_registered_device *rdev = cb[2];
17107
17108         nla_nest_end(msg, cb[1]);
17109         genlmsg_end(msg, cb[0]);
17110
17111         memset(msg->cb, 0, sizeof(msg->cb));
17112
17113         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17114                                 NL80211_MCGRP_MLME, gfp);
17115 }
17116
17117 void cfg80211_cqm_rssi_notify(struct net_device *dev,
17118                               enum nl80211_cqm_rssi_threshold_event rssi_event,
17119                               s32 rssi_level, gfp_t gfp)
17120 {
17121         struct sk_buff *msg;
17122         struct wireless_dev *wdev = dev->ieee80211_ptr;
17123         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17124
17125         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
17126
17127         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
17128                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
17129                 return;
17130
17131         if (wdev->cqm_config) {
17132                 wdev->cqm_config->last_rssi_event_value = rssi_level;
17133
17134                 cfg80211_cqm_rssi_update(rdev, dev);
17135
17136                 if (rssi_level == 0)
17137                         rssi_level = wdev->cqm_config->last_rssi_event_value;
17138         }
17139
17140         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17141         if (!msg)
17142                 return;
17143
17144         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
17145                         rssi_event))
17146                 goto nla_put_failure;
17147
17148         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
17149                                       rssi_level))
17150                 goto nla_put_failure;
17151
17152         cfg80211_send_cqm(msg, gfp);
17153
17154         return;
17155
17156  nla_put_failure:
17157         nlmsg_free(msg);
17158 }
17159 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
17160
17161 void cfg80211_cqm_txe_notify(struct net_device *dev,
17162                              const u8 *peer, u32 num_packets,
17163                              u32 rate, u32 intvl, gfp_t gfp)
17164 {
17165         struct sk_buff *msg;
17166
17167         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17168         if (!msg)
17169                 return;
17170
17171         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
17172                 goto nla_put_failure;
17173
17174         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
17175                 goto nla_put_failure;
17176
17177         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
17178                 goto nla_put_failure;
17179
17180         cfg80211_send_cqm(msg, gfp);
17181         return;
17182
17183  nla_put_failure:
17184         nlmsg_free(msg);
17185 }
17186 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
17187
17188 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
17189                                  const u8 *peer, u32 num_packets, gfp_t gfp)
17190 {
17191         struct sk_buff *msg;
17192
17193         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
17194
17195         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17196         if (!msg)
17197                 return;
17198
17199         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
17200                 goto nla_put_failure;
17201
17202         cfg80211_send_cqm(msg, gfp);
17203         return;
17204
17205  nla_put_failure:
17206         nlmsg_free(msg);
17207 }
17208 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
17209
17210 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
17211 {
17212         struct sk_buff *msg;
17213
17214         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17215         if (!msg)
17216                 return;
17217
17218         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
17219                 goto nla_put_failure;
17220
17221         cfg80211_send_cqm(msg, gfp);
17222         return;
17223
17224  nla_put_failure:
17225         nlmsg_free(msg);
17226 }
17227 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
17228
17229 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
17230                                      struct net_device *netdev, const u8 *bssid,
17231                                      const u8 *replay_ctr, gfp_t gfp)
17232 {
17233         struct sk_buff *msg;
17234         struct nlattr *rekey_attr;
17235         void *hdr;
17236
17237         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17238         if (!msg)
17239                 return;
17240
17241         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
17242         if (!hdr) {
17243                 nlmsg_free(msg);
17244                 return;
17245         }
17246
17247         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17248             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17249             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17250                 goto nla_put_failure;
17251
17252         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
17253         if (!rekey_attr)
17254                 goto nla_put_failure;
17255
17256         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
17257                     NL80211_REPLAY_CTR_LEN, replay_ctr))
17258                 goto nla_put_failure;
17259
17260         nla_nest_end(msg, rekey_attr);
17261
17262         genlmsg_end(msg, hdr);
17263
17264         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17265                                 NL80211_MCGRP_MLME, gfp);
17266         return;
17267
17268  nla_put_failure:
17269         nlmsg_free(msg);
17270 }
17271
17272 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
17273                                const u8 *replay_ctr, gfp_t gfp)
17274 {
17275         struct wireless_dev *wdev = dev->ieee80211_ptr;
17276         struct wiphy *wiphy = wdev->wiphy;
17277         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17278
17279         trace_cfg80211_gtk_rekey_notify(dev, bssid);
17280         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17281 }
17282 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17283
17284 static void
17285 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17286                                struct net_device *netdev, int index,
17287                                const u8 *bssid, bool preauth, gfp_t gfp)
17288 {
17289         struct sk_buff *msg;
17290         struct nlattr *attr;
17291         void *hdr;
17292
17293         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17294         if (!msg)
17295                 return;
17296
17297         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17298         if (!hdr) {
17299                 nlmsg_free(msg);
17300                 return;
17301         }
17302
17303         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17304             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17305                 goto nla_put_failure;
17306
17307         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17308         if (!attr)
17309                 goto nla_put_failure;
17310
17311         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17312             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17313             (preauth &&
17314              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17315                 goto nla_put_failure;
17316
17317         nla_nest_end(msg, attr);
17318
17319         genlmsg_end(msg, hdr);
17320
17321         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17322                                 NL80211_MCGRP_MLME, gfp);
17323         return;
17324
17325  nla_put_failure:
17326         nlmsg_free(msg);
17327 }
17328
17329 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17330                                      const u8 *bssid, bool preauth, gfp_t gfp)
17331 {
17332         struct wireless_dev *wdev = dev->ieee80211_ptr;
17333         struct wiphy *wiphy = wdev->wiphy;
17334         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17335
17336         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17337         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17338 }
17339 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17340
17341 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17342                                      struct net_device *netdev,
17343                                      struct cfg80211_chan_def *chandef,
17344                                      gfp_t gfp,
17345                                      enum nl80211_commands notif,
17346                                      u8 count, bool quiet)
17347 {
17348         struct sk_buff *msg;
17349         void *hdr;
17350
17351         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17352         if (!msg)
17353                 return;
17354
17355         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17356         if (!hdr) {
17357                 nlmsg_free(msg);
17358                 return;
17359         }
17360
17361         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17362                 goto nla_put_failure;
17363
17364         if (nl80211_send_chandef(msg, chandef))
17365                 goto nla_put_failure;
17366
17367         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
17368                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
17369                         goto nla_put_failure;
17370                 if (quiet &&
17371                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
17372                         goto nla_put_failure;
17373         }
17374
17375         genlmsg_end(msg, hdr);
17376
17377         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17378                                 NL80211_MCGRP_MLME, gfp);
17379         return;
17380
17381  nla_put_failure:
17382         nlmsg_free(msg);
17383 }
17384
17385 void cfg80211_ch_switch_notify(struct net_device *dev,
17386                                struct cfg80211_chan_def *chandef)
17387 {
17388         struct wireless_dev *wdev = dev->ieee80211_ptr;
17389         struct wiphy *wiphy = wdev->wiphy;
17390         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17391
17392         ASSERT_WDEV_LOCK(wdev);
17393
17394         trace_cfg80211_ch_switch_notify(dev, chandef);
17395
17396         wdev->chandef = *chandef;
17397         wdev->preset_chandef = *chandef;
17398
17399         if (wdev->iftype == NL80211_IFTYPE_STATION &&
17400             !WARN_ON(!wdev->current_bss))
17401                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17402
17403         cfg80211_sched_dfs_chan_update(rdev);
17404
17405         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17406                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
17407 }
17408 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17409
17410 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17411                                        struct cfg80211_chan_def *chandef,
17412                                        u8 count, bool quiet)
17413 {
17414         struct wireless_dev *wdev = dev->ieee80211_ptr;
17415         struct wiphy *wiphy = wdev->wiphy;
17416         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17417
17418         trace_cfg80211_ch_switch_started_notify(dev, chandef);
17419
17420         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17421                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
17422                                  count, quiet);
17423 }
17424 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17425
17426 void
17427 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17428                      const struct cfg80211_chan_def *chandef,
17429                      enum nl80211_radar_event event,
17430                      struct net_device *netdev, gfp_t gfp)
17431 {
17432         struct sk_buff *msg;
17433         void *hdr;
17434
17435         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17436         if (!msg)
17437                 return;
17438
17439         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17440         if (!hdr) {
17441                 nlmsg_free(msg);
17442                 return;
17443         }
17444
17445         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17446                 goto nla_put_failure;
17447
17448         /* NOP and radar events don't need a netdev parameter */
17449         if (netdev) {
17450                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17451
17452                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17453                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17454                                       NL80211_ATTR_PAD))
17455                         goto nla_put_failure;
17456         }
17457
17458         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17459                 goto nla_put_failure;
17460
17461         if (nl80211_send_chandef(msg, chandef))
17462                 goto nla_put_failure;
17463
17464         genlmsg_end(msg, hdr);
17465
17466         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17467                                 NL80211_MCGRP_MLME, gfp);
17468         return;
17469
17470  nla_put_failure:
17471         nlmsg_free(msg);
17472 }
17473
17474 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17475                                        struct sta_opmode_info *sta_opmode,
17476                                        gfp_t gfp)
17477 {
17478         struct sk_buff *msg;
17479         struct wireless_dev *wdev = dev->ieee80211_ptr;
17480         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17481         void *hdr;
17482
17483         if (WARN_ON(!mac))
17484                 return;
17485
17486         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17487         if (!msg)
17488                 return;
17489
17490         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17491         if (!hdr) {
17492                 nlmsg_free(msg);
17493                 return;
17494         }
17495
17496         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17497                 goto nla_put_failure;
17498
17499         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17500                 goto nla_put_failure;
17501
17502         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17503                 goto nla_put_failure;
17504
17505         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17506             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17507                 goto nla_put_failure;
17508
17509         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17510             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17511                 goto nla_put_failure;
17512
17513         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17514             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17515                 goto nla_put_failure;
17516
17517         genlmsg_end(msg, hdr);
17518
17519         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17520                                 NL80211_MCGRP_MLME, gfp);
17521
17522         return;
17523
17524 nla_put_failure:
17525         nlmsg_free(msg);
17526 }
17527 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17528
17529 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17530                            u64 cookie, bool acked, s32 ack_signal,
17531                            bool is_valid_ack_signal, gfp_t gfp)
17532 {
17533         struct wireless_dev *wdev = dev->ieee80211_ptr;
17534         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17535         struct sk_buff *msg;
17536         void *hdr;
17537
17538         trace_cfg80211_probe_status(dev, addr, cookie, acked);
17539
17540         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17541
17542         if (!msg)
17543                 return;
17544
17545         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17546         if (!hdr) {
17547                 nlmsg_free(msg);
17548                 return;
17549         }
17550
17551         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17552             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17553             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17554             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17555                               NL80211_ATTR_PAD) ||
17556             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17557             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17558                                                 ack_signal)))
17559                 goto nla_put_failure;
17560
17561         genlmsg_end(msg, hdr);
17562
17563         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17564                                 NL80211_MCGRP_MLME, gfp);
17565         return;
17566
17567  nla_put_failure:
17568         nlmsg_free(msg);
17569 }
17570 EXPORT_SYMBOL(cfg80211_probe_status);
17571
17572 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17573                                      size_t len, int freq, int sig_dbm)
17574 {
17575         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17576         struct sk_buff *msg;
17577         void *hdr;
17578         struct cfg80211_beacon_registration *reg;
17579
17580         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17581
17582         spin_lock_bh(&rdev->beacon_registrations_lock);
17583         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17584                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17585                 if (!msg) {
17586                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17587                         return;
17588                 }
17589
17590                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17591                 if (!hdr)
17592                         goto nla_put_failure;
17593
17594                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17595                     (freq &&
17596                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17597                                   KHZ_TO_MHZ(freq)) ||
17598                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17599                                   freq % 1000))) ||
17600                     (sig_dbm &&
17601                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17602                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17603                         goto nla_put_failure;
17604
17605                 genlmsg_end(msg, hdr);
17606
17607                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17608         }
17609         spin_unlock_bh(&rdev->beacon_registrations_lock);
17610         return;
17611
17612  nla_put_failure:
17613         spin_unlock_bh(&rdev->beacon_registrations_lock);
17614         nlmsg_free(msg);
17615 }
17616 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17617
17618 #ifdef CONFIG_PM
17619 static int cfg80211_net_detect_results(struct sk_buff *msg,
17620                                        struct cfg80211_wowlan_wakeup *wakeup)
17621 {
17622         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17623         struct nlattr *nl_results, *nl_match, *nl_freqs;
17624         int i, j;
17625
17626         nl_results = nla_nest_start_noflag(msg,
17627                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17628         if (!nl_results)
17629                 return -EMSGSIZE;
17630
17631         for (i = 0; i < nd->n_matches; i++) {
17632                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17633
17634                 nl_match = nla_nest_start_noflag(msg, i);
17635                 if (!nl_match)
17636                         break;
17637
17638                 /* The SSID attribute is optional in nl80211, but for
17639                  * simplicity reasons it's always present in the
17640                  * cfg80211 structure.  If a driver can't pass the
17641                  * SSID, that needs to be changed.  A zero length SSID
17642                  * is still a valid SSID (wildcard), so it cannot be
17643                  * used for this purpose.
17644                  */
17645                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17646                             match->ssid.ssid)) {
17647                         nla_nest_cancel(msg, nl_match);
17648                         goto out;
17649                 }
17650
17651                 if (match->n_channels) {
17652                         nl_freqs = nla_nest_start_noflag(msg,
17653                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17654                         if (!nl_freqs) {
17655                                 nla_nest_cancel(msg, nl_match);
17656                                 goto out;
17657                         }
17658
17659                         for (j = 0; j < match->n_channels; j++) {
17660                                 if (nla_put_u32(msg, j, match->channels[j])) {
17661                                         nla_nest_cancel(msg, nl_freqs);
17662                                         nla_nest_cancel(msg, nl_match);
17663                                         goto out;
17664                                 }
17665                         }
17666
17667                         nla_nest_end(msg, nl_freqs);
17668                 }
17669
17670                 nla_nest_end(msg, nl_match);
17671         }
17672
17673 out:
17674         nla_nest_end(msg, nl_results);
17675         return 0;
17676 }
17677
17678 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17679                                    struct cfg80211_wowlan_wakeup *wakeup,
17680                                    gfp_t gfp)
17681 {
17682         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17683         struct sk_buff *msg;
17684         void *hdr;
17685         int size = 200;
17686
17687         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17688
17689         if (wakeup)
17690                 size += wakeup->packet_present_len;
17691
17692         msg = nlmsg_new(size, gfp);
17693         if (!msg)
17694                 return;
17695
17696         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17697         if (!hdr)
17698                 goto free_msg;
17699
17700         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17701             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17702                               NL80211_ATTR_PAD))
17703                 goto free_msg;
17704
17705         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17706                                         wdev->netdev->ifindex))
17707                 goto free_msg;
17708
17709         if (wakeup) {
17710                 struct nlattr *reasons;
17711
17712                 reasons = nla_nest_start_noflag(msg,
17713                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17714                 if (!reasons)
17715                         goto free_msg;
17716
17717                 if (wakeup->disconnect &&
17718                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17719                         goto free_msg;
17720                 if (wakeup->magic_pkt &&
17721                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17722                         goto free_msg;
17723                 if (wakeup->gtk_rekey_failure &&
17724                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17725                         goto free_msg;
17726                 if (wakeup->eap_identity_req &&
17727                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17728                         goto free_msg;
17729                 if (wakeup->four_way_handshake &&
17730                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17731                         goto free_msg;
17732                 if (wakeup->rfkill_release &&
17733                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17734                         goto free_msg;
17735
17736                 if (wakeup->pattern_idx >= 0 &&
17737                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17738                                 wakeup->pattern_idx))
17739                         goto free_msg;
17740
17741                 if (wakeup->tcp_match &&
17742                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17743                         goto free_msg;
17744
17745                 if (wakeup->tcp_connlost &&
17746                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17747                         goto free_msg;
17748
17749                 if (wakeup->tcp_nomoretokens &&
17750                     nla_put_flag(msg,
17751                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17752                         goto free_msg;
17753
17754                 if (wakeup->packet) {
17755                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17756                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17757
17758                         if (!wakeup->packet_80211) {
17759                                 pkt_attr =
17760                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17761                                 len_attr =
17762                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17763                         }
17764
17765                         if (wakeup->packet_len &&
17766                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17767                                 goto free_msg;
17768
17769                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17770                                     wakeup->packet))
17771                                 goto free_msg;
17772                 }
17773
17774                 if (wakeup->net_detect &&
17775                     cfg80211_net_detect_results(msg, wakeup))
17776                                 goto free_msg;
17777
17778                 nla_nest_end(msg, reasons);
17779         }
17780
17781         genlmsg_end(msg, hdr);
17782
17783         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17784                                 NL80211_MCGRP_MLME, gfp);
17785         return;
17786
17787  free_msg:
17788         nlmsg_free(msg);
17789 }
17790 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17791 #endif
17792
17793 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17794                                 enum nl80211_tdls_operation oper,
17795                                 u16 reason_code, gfp_t gfp)
17796 {
17797         struct wireless_dev *wdev = dev->ieee80211_ptr;
17798         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17799         struct sk_buff *msg;
17800         void *hdr;
17801
17802         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17803                                          reason_code);
17804
17805         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17806         if (!msg)
17807                 return;
17808
17809         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17810         if (!hdr) {
17811                 nlmsg_free(msg);
17812                 return;
17813         }
17814
17815         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17816             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17817             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17818             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17819             (reason_code > 0 &&
17820              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17821                 goto nla_put_failure;
17822
17823         genlmsg_end(msg, hdr);
17824
17825         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17826                                 NL80211_MCGRP_MLME, gfp);
17827         return;
17828
17829  nla_put_failure:
17830         nlmsg_free(msg);
17831 }
17832 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17833
17834 static int nl80211_netlink_notify(struct notifier_block * nb,
17835                                   unsigned long state,
17836                                   void *_notify)
17837 {
17838         struct netlink_notify *notify = _notify;
17839         struct cfg80211_registered_device *rdev;
17840         struct wireless_dev *wdev;
17841         struct cfg80211_beacon_registration *reg, *tmp;
17842
17843         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17844                 return NOTIFY_DONE;
17845
17846         rcu_read_lock();
17847
17848         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17849                 struct cfg80211_sched_scan_request *sched_scan_req;
17850
17851                 list_for_each_entry_rcu(sched_scan_req,
17852                                         &rdev->sched_scan_req_list,
17853                                         list) {
17854                         if (sched_scan_req->owner_nlportid == notify->portid) {
17855                                 sched_scan_req->nl_owner_dead = true;
17856                                 schedule_work(&rdev->sched_scan_stop_wk);
17857                         }
17858                 }
17859
17860                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17861                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17862
17863                         if (wdev->owner_nlportid == notify->portid) {
17864                                 wdev->nl_owner_dead = true;
17865                                 schedule_work(&rdev->destroy_work);
17866                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17867                                 schedule_work(&wdev->disconnect_wk);
17868                         }
17869
17870                         cfg80211_release_pmsr(wdev, notify->portid);
17871                 }
17872
17873                 spin_lock_bh(&rdev->beacon_registrations_lock);
17874                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17875                                          list) {
17876                         if (reg->nlportid == notify->portid) {
17877                                 list_del(&reg->list);
17878                                 kfree(reg);
17879                                 break;
17880                         }
17881                 }
17882                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17883         }
17884
17885         rcu_read_unlock();
17886
17887         /*
17888          * It is possible that the user space process that is controlling the
17889          * indoor setting disappeared, so notify the regulatory core.
17890          */
17891         regulatory_netlink_notify(notify->portid);
17892         return NOTIFY_OK;
17893 }
17894
17895 static struct notifier_block nl80211_netlink_notifier = {
17896         .notifier_call = nl80211_netlink_notify,
17897 };
17898
17899 void cfg80211_ft_event(struct net_device *netdev,
17900                        struct cfg80211_ft_event_params *ft_event)
17901 {
17902         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17903         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17904         struct sk_buff *msg;
17905         void *hdr;
17906
17907         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17908
17909         if (!ft_event->target_ap)
17910                 return;
17911
17912         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17913                         GFP_KERNEL);
17914         if (!msg)
17915                 return;
17916
17917         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17918         if (!hdr)
17919                 goto out;
17920
17921         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17922             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17923             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17924                 goto out;
17925
17926         if (ft_event->ies &&
17927             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17928                 goto out;
17929         if (ft_event->ric_ies &&
17930             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17931                     ft_event->ric_ies))
17932                 goto out;
17933
17934         genlmsg_end(msg, hdr);
17935
17936         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17937                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17938         return;
17939  out:
17940         nlmsg_free(msg);
17941 }
17942 EXPORT_SYMBOL(cfg80211_ft_event);
17943
17944 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17945 {
17946         struct cfg80211_registered_device *rdev;
17947         struct sk_buff *msg;
17948         void *hdr;
17949         u32 nlportid;
17950
17951         rdev = wiphy_to_rdev(wdev->wiphy);
17952         if (!rdev->crit_proto_nlportid)
17953                 return;
17954
17955         nlportid = rdev->crit_proto_nlportid;
17956         rdev->crit_proto_nlportid = 0;
17957
17958         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17959         if (!msg)
17960                 return;
17961
17962         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17963         if (!hdr)
17964                 goto nla_put_failure;
17965
17966         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17967             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17968                               NL80211_ATTR_PAD))
17969                 goto nla_put_failure;
17970
17971         genlmsg_end(msg, hdr);
17972
17973         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17974         return;
17975
17976  nla_put_failure:
17977         nlmsg_free(msg);
17978 }
17979 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17980
17981 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17982 {
17983         struct wiphy *wiphy = wdev->wiphy;
17984         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17985         struct sk_buff *msg;
17986         void *hdr;
17987
17988         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17989         if (!msg)
17990                 return;
17991
17992         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17993         if (!hdr)
17994                 goto out;
17995
17996         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17997             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17998             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17999                               NL80211_ATTR_PAD))
18000                 goto out;
18001
18002         genlmsg_end(msg, hdr);
18003
18004         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
18005                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18006         return;
18007  out:
18008         nlmsg_free(msg);
18009 }
18010
18011 int cfg80211_external_auth_request(struct net_device *dev,
18012                                    struct cfg80211_external_auth_params *params,
18013                                    gfp_t gfp)
18014 {
18015         struct wireless_dev *wdev = dev->ieee80211_ptr;
18016         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18017         struct sk_buff *msg;
18018         void *hdr;
18019
18020         if (!wdev->conn_owner_nlportid)
18021                 return -EINVAL;
18022
18023         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18024         if (!msg)
18025                 return -ENOMEM;
18026
18027         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
18028         if (!hdr)
18029                 goto nla_put_failure;
18030
18031         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18032             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18033             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
18034             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
18035                         params->action) ||
18036             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
18037             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
18038                     params->ssid.ssid))
18039                 goto nla_put_failure;
18040
18041         genlmsg_end(msg, hdr);
18042         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
18043                         wdev->conn_owner_nlportid);
18044         return 0;
18045
18046  nla_put_failure:
18047         nlmsg_free(msg);
18048         return -ENOBUFS;
18049 }
18050 EXPORT_SYMBOL(cfg80211_external_auth_request);
18051
18052 void cfg80211_update_owe_info_event(struct net_device *netdev,
18053                                     struct cfg80211_update_owe_info *owe_info,
18054                                     gfp_t gfp)
18055 {
18056         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
18057         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18058         struct sk_buff *msg;
18059         void *hdr;
18060
18061         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
18062
18063         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18064         if (!msg)
18065                 return;
18066
18067         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
18068         if (!hdr)
18069                 goto nla_put_failure;
18070
18071         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18072             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18073             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
18074                 goto nla_put_failure;
18075
18076         if (!owe_info->ie_len ||
18077             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
18078                 goto nla_put_failure;
18079
18080         genlmsg_end(msg, hdr);
18081
18082         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18083                                 NL80211_MCGRP_MLME, gfp);
18084         return;
18085
18086 nla_put_failure:
18087         genlmsg_cancel(msg, hdr);
18088         nlmsg_free(msg);
18089 }
18090 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
18091
18092 /* initialisation/exit functions */
18093
18094 int __init nl80211_init(void)
18095 {
18096         int err;
18097
18098         err = genl_register_family(&nl80211_fam);
18099         if (err)
18100                 return err;
18101
18102         err = netlink_register_notifier(&nl80211_netlink_notifier);
18103         if (err)
18104                 goto err_out;
18105
18106         return 0;
18107  err_out:
18108         genl_unregister_family(&nl80211_fam);
18109         return err;
18110 }
18111
18112 void nl80211_exit(void)
18113 {
18114         netlink_unregister_notifier(&nl80211_netlink_notifier);
18115         genl_unregister_family(&nl80211_fam);
18116 }