net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  *
   7  * This file is GPLv2 as found in COPYING.
   8  */
   9
  10 #include <linux/ieee80211.h>
  11 #include <linux/nl80211.h>
  12 #include <linux/rtnetlink.h>
  13 #include <linux/slab.h>
  14 #include <net/net_namespace.h>
  15 #include <linux/rcupdate.h>
  16 #include <linux/if_ether.h>
  17 #include <net/cfg80211.h>
  18 #include "ieee80211_i.h"
  19 #include "driver-ops.h"
  20 #include "cfg.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23 #include "wme.h"
  24
  25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  26                                                 const char *name,
  27                                                 enum nl80211_iftype type,
  28                                                 u32 *flags,
  29                                                 struct vif_params *params)
  30 {
  31         struct ieee80211_local *local = wiphy_priv(wiphy);
  32         struct wireless_dev *wdev;
  33         struct ieee80211_sub_if_data *sdata;
  34         int err;
  35
  36         err = ieee80211_if_add(local, name, &wdev, type, params);
  37         if (err)
  38                 return ERR_PTR(err);
  39
  40         if (type == NL80211_IFTYPE_MONITOR && flags) {
  41                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  42                 sdata->u.mntr_flags = *flags;
  43         }
  44
  45         return wdev;
  46 }
  47
  48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  49 {
  50         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  51
  52         return 0;
  53 }
  54
  55 static int ieee80211_change_iface(struct wiphy *wiphy,
  56                                   struct net_device *dev,
  57                                   enum nl80211_iftype type, u32 *flags,
  58                                   struct vif_params *params)
  59 {
  60         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  61         int ret;
  62
  63         ret = ieee80211_if_change_type(sdata, type);
  64         if (ret)
  65                 return ret;
  66
  67         if (type == NL80211_IFTYPE_AP_VLAN &&
  68             params && params->use_4addr == 0)
  69                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  70         else if (type == NL80211_IFTYPE_STATION &&
  71                  params && params->use_4addr >= 0)
  72                 sdata->u.mgd.use_4addr = params->use_4addr;
  73
  74         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  75                 struct ieee80211_local *local = sdata->local;
  76
  77                 if (ieee80211_sdata_running(sdata)) {
  78                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  79                                    MONITOR_FLAG_ACTIVE;
  80
  81                         /*
  82                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  83                          * MONITOR_FLAG_ACTIVE to be changed while the
  84                          * interface is up.
  85                          * Else we would need to add a lot of cruft
  86                          * to update everything:
  87                          *      cooked_mntrs, monitor and all fif_* counters
  88                          *      reconfigure hardware
  89                          */
  90                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  91                                 return -EBUSY;
  92
  93                         ieee80211_adjust_monitor_flags(sdata, -1);
  94                         sdata->u.mntr_flags = *flags;
  95                         ieee80211_adjust_monitor_flags(sdata, 1);
  96
  97                         ieee80211_configure_filter(local);
  98                 } else {
  99                         /*
 100                          * Because the interface is down, ieee80211_do_stop
 101                          * and ieee80211_do_open take care of "everything"
 102                          * mentioned in the comment above.
 103                          */
 104                         sdata->u.mntr_flags = *flags;
 105                 }
 106         }
 107
 108         return 0;
 109 }
 110
 111 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 112                                       struct wireless_dev *wdev)
 113 {
 114         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 115         int ret;
 116
 117         mutex_lock(&sdata->local->chanctx_mtx);
 118         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 119         mutex_unlock(&sdata->local->chanctx_mtx);
 120         if (ret < 0)
 121                 return ret;
 122
 123         return ieee80211_do_open(wdev, true);
 124 }
 125
 126 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 127                                       struct wireless_dev *wdev)
 128 {
 129         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 130 }
 131
 132 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 133                                   struct net_device *dev,
 134                                   u16 noack_map)
 135 {
 136         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 137
 138         sdata->noack_map = noack_map;
 139         return 0;
 140 }
 141
 142 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 143                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 144                              struct key_params *params)
 145 {
 146         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 147         struct ieee80211_local *local = sdata->local;
 148         struct sta_info *sta = NULL;
 149         const struct ieee80211_cipher_scheme *cs = NULL;
 150         struct ieee80211_key *key;
 151         int err;
 152
 153         if (!ieee80211_sdata_running(sdata))
 154                 return -ENETDOWN;
 155
 156         /* reject WEP and TKIP keys if WEP failed to initialize */
 157         switch (params->cipher) {
 158         case WLAN_CIPHER_SUITE_WEP40:
 159         case WLAN_CIPHER_SUITE_TKIP:
 160         case WLAN_CIPHER_SUITE_WEP104:
 161                 if (IS_ERR(local->wep_tx_tfm))
 162                         return -EINVAL;
 163                 break;
 164         case WLAN_CIPHER_SUITE_CCMP:
 165         case WLAN_CIPHER_SUITE_CCMP_256:
 166         case WLAN_CIPHER_SUITE_AES_CMAC:
 167         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 168         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 169         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 170         case WLAN_CIPHER_SUITE_GCMP:
 171         case WLAN_CIPHER_SUITE_GCMP_256:
 172                 break;
 173         default:
 174                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 175                 break;
 176         }
 177
 178         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 179                                   params->key, params->seq_len, params->seq,
 180                                   cs);
 181         if (IS_ERR(key))
 182                 return PTR_ERR(key);
 183
 184         if (pairwise)
 185                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 186
 187         mutex_lock(&local->sta_mtx);
 188
 189         if (mac_addr) {
 190                 if (ieee80211_vif_is_mesh(&sdata->vif))
 191                         sta = sta_info_get(sdata, mac_addr);
 192                 else
 193                         sta = sta_info_get_bss(sdata, mac_addr);
 194                 /*
 195                  * The ASSOC test makes sure the driver is ready to
 196                  * receive the key. When wpa_supplicant has roamed
 197                  * using FT, it attempts to set the key before
 198                  * association has completed, this rejects that attempt
 199                  * so it will set the key again after association.
 200                  *
 201                  * TODO: accept the key if we have a station entry and
 202                  *       add it to the device after the station.
 203                  */
 204                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 205                         ieee80211_key_free_unused(key);
 206                         err = -ENOENT;
 207                         goto out_unlock;
 208                 }
 209         }
 210
 211         switch (sdata->vif.type) {
 212         case NL80211_IFTYPE_STATION:
 213                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 214                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 215                 break;
 216         case NL80211_IFTYPE_AP:
 217         case NL80211_IFTYPE_AP_VLAN:
 218                 /* Keys without a station are used for TX only */
 219                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 220                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 221                 break;
 222         case NL80211_IFTYPE_ADHOC:
 223                 /* no MFP (yet) */
 224                 break;
 225         case NL80211_IFTYPE_MESH_POINT:
 226 #ifdef CONFIG_MAC80211_MESH
 227                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 228                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 229                 break;
 230 #endif
 231         case NL80211_IFTYPE_WDS:
 232         case NL80211_IFTYPE_MONITOR:
 233         case NL80211_IFTYPE_P2P_DEVICE:
 234         case NL80211_IFTYPE_UNSPECIFIED:
 235         case NUM_NL80211_IFTYPES:
 236         case NL80211_IFTYPE_P2P_CLIENT:
 237         case NL80211_IFTYPE_P2P_GO:
 238         case NL80211_IFTYPE_OCB:
 239                 /* shouldn't happen */
 240                 WARN_ON_ONCE(1);
 241                 break;
 242         }
 243
 244         if (sta)
 245                 sta->cipher_scheme = cs;
 246
 247         err = ieee80211_key_link(key, sdata, sta);
 248
 249  out_unlock:
 250         mutex_unlock(&local->sta_mtx);
 251
 252         return err;
 253 }
 254
 255 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 256                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 257 {
 258         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 259         struct ieee80211_local *local = sdata->local;
 260         struct sta_info *sta;
 261         struct ieee80211_key *key = NULL;
 262         int ret;
 263
 264         mutex_lock(&local->sta_mtx);
 265         mutex_lock(&local->key_mtx);
 266
 267         if (mac_addr) {
 268                 ret = -ENOENT;
 269
 270                 sta = sta_info_get_bss(sdata, mac_addr);
 271                 if (!sta)
 272                         goto out_unlock;
 273
 274                 if (pairwise)
 275                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 276                 else
 277                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 278         } else
 279                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 280
 281         if (!key) {
 282                 ret = -ENOENT;
 283                 goto out_unlock;
 284         }
 285
 286         ieee80211_key_free(key, true);
 287
 288         ret = 0;
 289  out_unlock:
 290         mutex_unlock(&local->key_mtx);
 291         mutex_unlock(&local->sta_mtx);
 292
 293         return ret;
 294 }
 295
 296 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 297                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 298                              void *cookie,
 299                              void (*callback)(void *cookie,
 300                                               struct key_params *params))
 301 {
 302         struct ieee80211_sub_if_data *sdata;
 303         struct sta_info *sta = NULL;
 304         u8 seq[6] = {0};
 305         struct key_params params;
 306         struct ieee80211_key *key = NULL;
 307         u64 pn64;
 308         u32 iv32;
 309         u16 iv16;
 310         int err = -ENOENT;
 311
 312         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 313
 314         rcu_read_lock();
 315
 316         if (mac_addr) {
 317                 sta = sta_info_get_bss(sdata, mac_addr);
 318                 if (!sta)
 319                         goto out;
 320
 321                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 322                         key = rcu_dereference(sta->ptk[key_idx]);
 323                 else if (!pairwise &&
 324                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 325                         key = rcu_dereference(sta->gtk[key_idx]);
 326         } else
 327                 key = rcu_dereference(sdata->keys[key_idx]);
 328
 329         if (!key)
 330                 goto out;
 331
 332         memset(&params, 0, sizeof(params));
 333
 334         params.cipher = key->conf.cipher;
 335
 336         switch (key->conf.cipher) {
 337         case WLAN_CIPHER_SUITE_TKIP:
 338                 iv32 = key->u.tkip.tx.iv32;
 339                 iv16 = key->u.tkip.tx.iv16;
 340
 341                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 342                         drv_get_tkip_seq(sdata->local,
 343                                          key->conf.hw_key_idx,
 344                                          &iv32, &iv16);
 345
 346                 seq[0] = iv16 & 0xff;
 347                 seq[1] = (iv16 >> 8) & 0xff;
 348                 seq[2] = iv32 & 0xff;
 349                 seq[3] = (iv32 >> 8) & 0xff;
 350                 seq[4] = (iv32 >> 16) & 0xff;
 351                 seq[5] = (iv32 >> 24) & 0xff;
 352                 params.seq = seq;
 353                 params.seq_len = 6;
 354                 break;
 355         case WLAN_CIPHER_SUITE_CCMP:
 356         case WLAN_CIPHER_SUITE_CCMP_256:
 357                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 358                 seq[0] = pn64;
 359                 seq[1] = pn64 >> 8;
 360                 seq[2] = pn64 >> 16;
 361                 seq[3] = pn64 >> 24;
 362                 seq[4] = pn64 >> 32;
 363                 seq[5] = pn64 >> 40;
 364                 params.seq = seq;
 365                 params.seq_len = 6;
 366                 break;
 367         case WLAN_CIPHER_SUITE_AES_CMAC:
 368         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 369                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 370                 seq[0] = pn64;
 371                 seq[1] = pn64 >> 8;
 372                 seq[2] = pn64 >> 16;
 373                 seq[3] = pn64 >> 24;
 374                 seq[4] = pn64 >> 32;
 375                 seq[5] = pn64 >> 40;
 376                 params.seq = seq;
 377                 params.seq_len = 6;
 378                 break;
 379         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 380         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 381                 pn64 = atomic64_read(&key->u.aes_gmac.tx_pn);
 382                 seq[0] = pn64;
 383                 seq[1] = pn64 >> 8;
 384                 seq[2] = pn64 >> 16;
 385                 seq[3] = pn64 >> 24;
 386                 seq[4] = pn64 >> 32;
 387                 seq[5] = pn64 >> 40;
 388                 params.seq = seq;
 389                 params.seq_len = 6;
 390                 break;
 391         case WLAN_CIPHER_SUITE_GCMP:
 392         case WLAN_CIPHER_SUITE_GCMP_256:
 393                 pn64 = atomic64_read(&key->u.gcmp.tx_pn);
 394                 seq[0] = pn64;
 395                 seq[1] = pn64 >> 8;
 396                 seq[2] = pn64 >> 16;
 397                 seq[3] = pn64 >> 24;
 398                 seq[4] = pn64 >> 32;
 399                 seq[5] = pn64 >> 40;
 400                 params.seq = seq;
 401                 params.seq_len = 6;
 402                 break;
 403         }
 404
 405         params.key = key->conf.key;
 406         params.key_len = key->conf.keylen;
 407
 408         callback(cookie, &params);
 409         err = 0;
 410
 411  out:
 412         rcu_read_unlock();
 413         return err;
 414 }
 415
 416 static int ieee80211_config_default_key(struct wiphy *wiphy,
 417                                         struct net_device *dev,
 418                                         u8 key_idx, bool uni,
 419                                         bool multi)
 420 {
 421         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 422
 423         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 424
 425         return 0;
 426 }
 427
 428 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 429                                              struct net_device *dev,
 430                                              u8 key_idx)
 431 {
 432         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 433
 434         ieee80211_set_default_mgmt_key(sdata, key_idx);
 435
 436         return 0;
 437 }
 438
 439 void sta_set_rate_info_tx(struct sta_info *sta,
 440                           const struct ieee80211_tx_rate *rate,
 441                           struct rate_info *rinfo)
 442 {
 443         rinfo->flags = 0;
 444         if (rate->flags & IEEE80211_TX_RC_MCS) {
 445                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 446                 rinfo->mcs = rate->idx;
 447         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 448                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 449                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 450                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 451         } else {
 452                 struct ieee80211_supported_band *sband;
 453                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 454                 u16 brate;
 455
 456                 sband = sta->local->hw.wiphy->bands[
 457                                 ieee80211_get_sdata_band(sta->sdata)];
 458                 brate = sband->bitrates[rate->idx].bitrate;
 459                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 460         }
 461         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 462                 rinfo->bw = RATE_INFO_BW_40;
 463         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 464                 rinfo->bw = RATE_INFO_BW_80;
 465         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 466                 rinfo->bw = RATE_INFO_BW_160;
 467         else
 468                 rinfo->bw = RATE_INFO_BW_20;
 469         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 470                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 471 }
 472
 473 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 474 {
 475         rinfo->flags = 0;
 476
 477         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 478                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 479                 rinfo->mcs = sta->last_rx_rate_idx;
 480         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 481                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 482                 rinfo->nss = sta->last_rx_rate_vht_nss;
 483                 rinfo->mcs = sta->last_rx_rate_idx;
 484         } else {
 485                 struct ieee80211_supported_band *sband;
 486                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 487                 u16 brate;
 488
 489                 sband = sta->local->hw.wiphy->bands[
 490                                 ieee80211_get_sdata_band(sta->sdata)];
 491                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 492                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 493         }
 494
 495         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 496                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 497
 498         if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
 499                 rinfo->bw = RATE_INFO_BW_5;
 500         else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
 501                 rinfo->bw = RATE_INFO_BW_10;
 502         else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 503                 rinfo->bw = RATE_INFO_BW_40;
 504         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 505                 rinfo->bw = RATE_INFO_BW_80;
 506         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 507                 rinfo->bw = RATE_INFO_BW_160;
 508         else
 509                 rinfo->bw = RATE_INFO_BW_20;
 510 }
 511
 512 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 513                                   int idx, u8 *mac, struct station_info *sinfo)
 514 {
 515         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 516         struct ieee80211_local *local = sdata->local;
 517         struct sta_info *sta;
 518         int ret = -ENOENT;
 519
 520         mutex_lock(&local->sta_mtx);
 521
 522         sta = sta_info_get_by_idx(sdata, idx);
 523         if (sta) {
 524                 ret = 0;
 525                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 526                 sta_set_sinfo(sta, sinfo);
 527         }
 528
 529         mutex_unlock(&local->sta_mtx);
 530
 531         return ret;
 532 }
 533
 534 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 535                                  int idx, struct survey_info *survey)
 536 {
 537         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 538
 539         return drv_get_survey(local, idx, survey);
 540 }
 541
 542 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 543                                  const u8 *mac, struct station_info *sinfo)
 544 {
 545         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 546         struct ieee80211_local *local = sdata->local;
 547         struct sta_info *sta;
 548         int ret = -ENOENT;
 549
 550         mutex_lock(&local->sta_mtx);
 551
 552         sta = sta_info_get_bss(sdata, mac);
 553         if (sta) {
 554                 ret = 0;
 555                 sta_set_sinfo(sta, sinfo);
 556         }
 557
 558         mutex_unlock(&local->sta_mtx);
 559
 560         return ret;
 561 }
 562
 563 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 564                                          struct cfg80211_chan_def *chandef)
 565 {
 566         struct ieee80211_local *local = wiphy_priv(wiphy);
 567         struct ieee80211_sub_if_data *sdata;
 568         int ret = 0;
 569
 570         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 571                 return 0;
 572
 573         mutex_lock(&local->mtx);
 574         mutex_lock(&local->iflist_mtx);
 575         if (local->use_chanctx) {
 576                 sdata = rcu_dereference_protected(
 577                                 local->monitor_sdata,
 578                                 lockdep_is_held(&local->iflist_mtx));
 579                 if (sdata) {
 580                         ieee80211_vif_release_channel(sdata);
 581                         ret = ieee80211_vif_use_channel(sdata, chandef,
 582                                         IEEE80211_CHANCTX_EXCLUSIVE);
 583                 }
 584         } else if (local->open_count == local->monitors) {
 585                 local->_oper_chandef = *chandef;
 586                 ieee80211_hw_config(local, 0);
 587         }
 588
 589         if (ret == 0)
 590                 local->monitor_chandef = *chandef;
 591         mutex_unlock(&local->iflist_mtx);
 592         mutex_unlock(&local->mtx);
 593
 594         return ret;
 595 }
 596
 597 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 598                                     const u8 *resp, size_t resp_len,
 599                                     const struct ieee80211_csa_settings *csa)
 600 {
 601         struct probe_resp *new, *old;
 602
 603         if (!resp || !resp_len)
 604                 return 1;
 605
 606         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 607
 608         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 609         if (!new)
 610                 return -ENOMEM;
 611
 612         new->len = resp_len;
 613         memcpy(new->data, resp, resp_len);
 614
 615         if (csa)
 616                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 617                        csa->n_counter_offsets_presp *
 618                        sizeof(new->csa_counter_offsets[0]));
 619
 620         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 621         if (old)
 622                 kfree_rcu(old, rcu_head);
 623
 624         return 0;
 625 }
 626
 627 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 628                                    struct cfg80211_beacon_data *params,
 629                                    const struct ieee80211_csa_settings *csa)
 630 {
 631         struct beacon_data *new, *old;
 632         int new_head_len, new_tail_len;
 633         int size, err;
 634         u32 changed = BSS_CHANGED_BEACON;
 635
 636         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 637
 638
 639         /* Need to have a beacon head if we don't have one yet */
 640         if (!params->head && !old)
 641                 return -EINVAL;
 642
 643         /* new or old head? */
 644         if (params->head)
 645                 new_head_len = params->head_len;
 646         else
 647                 new_head_len = old->head_len;
 648
 649         /* new or old tail? */
 650         if (params->tail || !old)
 651                 /* params->tail_len will be zero for !params->tail */
 652                 new_tail_len = params->tail_len;
 653         else
 654                 new_tail_len = old->tail_len;
 655
 656         size = sizeof(*new) + new_head_len + new_tail_len;
 657
 658         new = kzalloc(size, GFP_KERNEL);
 659         if (!new)
 660                 return -ENOMEM;
 661
 662         /* start filling the new info now */
 663
 664         /*
 665          * pointers go into the block we allocated,
 666          * memory is | beacon_data | head | tail |
 667          */
 668         new->head = ((u8 *) new) + sizeof(*new);
 669         new->tail = new->head + new_head_len;
 670         new->head_len = new_head_len;
 671         new->tail_len = new_tail_len;
 672
 673         if (csa) {
 674                 new->csa_current_counter = csa->count;
 675                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 676                        csa->n_counter_offsets_beacon *
 677                        sizeof(new->csa_counter_offsets[0]));
 678         }
 679
 680         /* copy in head */
 681         if (params->head)
 682                 memcpy(new->head, params->head, new_head_len);
 683         else
 684                 memcpy(new->head, old->head, new_head_len);
 685
 686         /* copy in optional tail */
 687         if (params->tail)
 688                 memcpy(new->tail, params->tail, new_tail_len);
 689         else
 690                 if (old)
 691                         memcpy(new->tail, old->tail, new_tail_len);
 692
 693         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 694                                        params->probe_resp_len, csa);
 695         if (err < 0)
 696                 return err;
 697         if (err == 0)
 698                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 699
 700         rcu_assign_pointer(sdata->u.ap.beacon, new);
 701
 702         if (old)
 703                 kfree_rcu(old, rcu_head);
 704
 705         return changed;
 706 }
 707
 708 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 709                               struct cfg80211_ap_settings *params)
 710 {
 711         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 712         struct ieee80211_local *local = sdata->local;
 713         struct beacon_data *old;
 714         struct ieee80211_sub_if_data *vlan;
 715         u32 changed = BSS_CHANGED_BEACON_INT |
 716                       BSS_CHANGED_BEACON_ENABLED |
 717                       BSS_CHANGED_BEACON |
 718                       BSS_CHANGED_SSID |
 719                       BSS_CHANGED_P2P_PS |
 720                       BSS_CHANGED_TXPOWER;
 721         int err;
 722
 723         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 724         if (old)
 725                 return -EALREADY;
 726
 727         switch (params->smps_mode) {
 728         case NL80211_SMPS_OFF:
 729                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 730                 break;
 731         case NL80211_SMPS_STATIC:
 732                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 733                 break;
 734         case NL80211_SMPS_DYNAMIC:
 735                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 736                 break;
 737         default:
 738                 return -EINVAL;
 739         }
 740         sdata->needed_rx_chains = sdata->local->rx_chains;
 741
 742         mutex_lock(&local->mtx);
 743         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 744                                         IEEE80211_CHANCTX_SHARED);
 745         if (!err)
 746                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 747         mutex_unlock(&local->mtx);
 748         if (err)
 749                 return err;
 750
 751         /*
 752          * Apply control port protocol, this allows us to
 753          * not encrypt dynamic WEP control frames.
 754          */
 755         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 756         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 757         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 758                                                         &params->crypto,
 759                                                         sdata->vif.type);
 760
 761         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 762                 vlan->control_port_protocol =
 763                         params->crypto.control_port_ethertype;
 764                 vlan->control_port_no_encrypt =
 765                         params->crypto.control_port_no_encrypt;
 766                 vlan->encrypt_headroom =
 767                         ieee80211_cs_headroom(sdata->local,
 768                                               &params->crypto,
 769                                               vlan->vif.type);
 770         }
 771
 772         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 773         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 774         sdata->vif.bss_conf.enable_beacon = true;
 775
 776         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 777         if (params->ssid_len)
 778                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 779                        params->ssid_len);
 780         sdata->vif.bss_conf.hidden_ssid =
 781                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 782
 783         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 784                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 785         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 786                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 787         if (params->p2p_opp_ps)
 788                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 789                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 790
 791         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 792         if (err < 0) {
 793                 ieee80211_vif_release_channel(sdata);
 794                 return err;
 795         }
 796         changed |= err;
 797
 798         err = drv_start_ap(sdata->local, sdata);
 799         if (err) {
 800                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 801
 802                 if (old)
 803                         kfree_rcu(old, rcu_head);
 804                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 805                 ieee80211_vif_release_channel(sdata);
 806                 return err;
 807         }
 808
 809         ieee80211_recalc_dtim(local, sdata);
 810         ieee80211_bss_info_change_notify(sdata, changed);
 811
 812         netif_carrier_on(dev);
 813         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 814                 netif_carrier_on(vlan->dev);
 815
 816         return 0;
 817 }
 818
 819 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 820                                    struct cfg80211_beacon_data *params)
 821 {
 822         struct ieee80211_sub_if_data *sdata;
 823         struct beacon_data *old;
 824         int err;
 825
 826         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 827         sdata_assert_lock(sdata);
 828
 829         /* don't allow changing the beacon while CSA is in place - offset
 830          * of channel switch counter may change
 831          */
 832         if (sdata->vif.csa_active)
 833                 return -EBUSY;
 834
 835         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 836         if (!old)
 837                 return -ENOENT;
 838
 839         err = ieee80211_assign_beacon(sdata, params, NULL);
 840         if (err < 0)
 841                 return err;
 842         ieee80211_bss_info_change_notify(sdata, err);
 843         return 0;
 844 }
 845
 846 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 847 {
 848         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 849         struct ieee80211_sub_if_data *vlan;
 850         struct ieee80211_local *local = sdata->local;
 851         struct beacon_data *old_beacon;
 852         struct probe_resp *old_probe_resp;
 853         struct cfg80211_chan_def chandef;
 854
 855         sdata_assert_lock(sdata);
 856
 857         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 858         if (!old_beacon)
 859                 return -ENOENT;
 860         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 861
 862         /* abort any running channel switch */
 863         mutex_lock(&local->mtx);
 864         sdata->vif.csa_active = false;
 865         if (sdata->csa_block_tx) {
 866                 ieee80211_wake_vif_queues(local, sdata,
 867                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 868                 sdata->csa_block_tx = false;
 869         }
 870
 871         mutex_unlock(&local->mtx);
 872
 873         kfree(sdata->u.ap.next_beacon);
 874         sdata->u.ap.next_beacon = NULL;
 875
 876         /* turn off carrier for this interface and dependent VLANs */
 877         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 878                 netif_carrier_off(vlan->dev);
 879         netif_carrier_off(dev);
 880
 881         /* remove beacon and probe response */
 882         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 883         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 884         kfree_rcu(old_beacon, rcu_head);
 885         if (old_probe_resp)
 886                 kfree_rcu(old_probe_resp, rcu_head);
 887         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 888
 889         __sta_info_flush(sdata, true);
 890         ieee80211_free_keys(sdata, true);
 891
 892         sdata->vif.bss_conf.enable_beacon = false;
 893         sdata->vif.bss_conf.ssid_len = 0;
 894         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 895         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 896
 897         if (sdata->wdev.cac_started) {
 898                 chandef = sdata->vif.bss_conf.chandef;
 899                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 900                 cfg80211_cac_event(sdata->dev, &chandef,
 901                                    NL80211_RADAR_CAC_ABORTED,
 902                                    GFP_KERNEL);
 903         }
 904
 905         drv_stop_ap(sdata->local, sdata);
 906
 907         /* free all potentially still buffered bcast frames */
 908         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 909         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 910
 911         mutex_lock(&local->mtx);
 912         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 913         ieee80211_vif_release_channel(sdata);
 914         mutex_unlock(&local->mtx);
 915
 916         return 0;
 917 }
 918
 919 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 920 struct iapp_layer2_update {
 921         u8 da[ETH_ALEN];        /* broadcast */
 922         u8 sa[ETH_ALEN];        /* STA addr */
 923         __be16 len;             /* 6 */
 924         u8 dsap;                /* 0 */
 925         u8 ssap;                /* 0 */
 926         u8 control;
 927         u8 xid_info[3];
 928 } __packed;
 929
 930 static void ieee80211_send_layer2_update(struct sta_info *sta)
 931 {
 932         struct iapp_layer2_update *msg;
 933         struct sk_buff *skb;
 934
 935         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 936          * bridge devices */
 937
 938         skb = dev_alloc_skb(sizeof(*msg));
 939         if (!skb)
 940                 return;
 941         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 942
 943         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 944          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 945
 946         eth_broadcast_addr(msg->da);
 947         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 948         msg->len = htons(6);
 949         msg->dsap = 0;
 950         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 951         msg->control = 0xaf;    /* XID response lsb.1111F101.
 952                                  * F=0 (no poll command; unsolicited frame) */
 953         msg->xid_info[0] = 0x81;        /* XID format identifier */
 954         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 955         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 956
 957         skb->dev = sta->sdata->dev;
 958         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 959         memset(skb->cb, 0, sizeof(skb->cb));
 960         netif_rx_ni(skb);
 961 }
 962
 963 static int sta_apply_auth_flags(struct ieee80211_local *local,
 964                                 struct sta_info *sta,
 965                                 u32 mask, u32 set)
 966 {
 967         int ret;
 968
 969         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 970             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 971             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 972                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 973                 if (ret)
 974                         return ret;
 975         }
 976
 977         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 978             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 979             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 980                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 981                 if (ret)
 982                         return ret;
 983         }
 984
 985         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 986                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 987                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 988                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 989                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 990                 else
 991                         ret = 0;
 992                 if (ret)
 993                         return ret;
 994         }
 995
 996         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 997             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
 998             test_sta_flag(sta, WLAN_STA_ASSOC)) {
 999                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1000                 if (ret)
1001                         return ret;
1002         }
1003
1004         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1005             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1006             test_sta_flag(sta, WLAN_STA_AUTH)) {
1007                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1008                 if (ret)
1009                         return ret;
1010         }
1011
1012         return 0;
1013 }
1014
1015 static int sta_apply_parameters(struct ieee80211_local *local,
1016                                 struct sta_info *sta,
1017                                 struct station_parameters *params)
1018 {
1019         int ret = 0;
1020         struct ieee80211_supported_band *sband;
1021         struct ieee80211_sub_if_data *sdata = sta->sdata;
1022         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1023         u32 mask, set;
1024
1025         sband = local->hw.wiphy->bands[band];
1026
1027         mask = params->sta_flags_mask;
1028         set = params->sta_flags_set;
1029
1030         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1031                 /*
1032                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1033                  * API but must follow AUTHENTICATED for driver state.
1034                  */
1035                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1036                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1037                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1038                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1039         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1040                 /*
1041                  * TDLS -- everything follows authorized, but
1042                  * only becoming authorized is possible, not
1043                  * going back
1044                  */
1045                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1046                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1047                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1048                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1049                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1050                 }
1051         }
1052
1053         /* auth flags will be set later for TDLS stations */
1054         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1055                 ret = sta_apply_auth_flags(local, sta, mask, set);
1056                 if (ret)
1057                         return ret;
1058         }
1059
1060         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1061                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1062                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1063                 else
1064                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1065         }
1066
1067         if (mask & BIT(NL80211_STA_FLAG_WME))
1068                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1069
1070         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1071                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1072                 if (set & BIT(NL80211_STA_FLAG_MFP))
1073                         set_sta_flag(sta, WLAN_STA_MFP);
1074                 else
1075                         clear_sta_flag(sta, WLAN_STA_MFP);
1076         }
1077
1078         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1079                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1080                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1081                 else
1082                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1083         }
1084
1085         /* mark TDLS channel switch support, if the AP allows it */
1086         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1087             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1088             params->ext_capab_len >= 4 &&
1089             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1090                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1091
1092         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1093                 sta->sta.uapsd_queues = params->uapsd_queues;
1094                 sta->sta.max_sp = params->max_sp;
1095         }
1096
1097         /*
1098          * cfg80211 validates this (1-2007) and allows setting the AID
1099          * only when creating a new station entry
1100          */
1101         if (params->aid)
1102                 sta->sta.aid = params->aid;
1103
1104         /*
1105          * Some of the following updates would be racy if called on an
1106          * existing station, via ieee80211_change_station(). However,
1107          * all such changes are rejected by cfg80211 except for updates
1108          * changing the supported rates on an existing but not yet used
1109          * TDLS peer.
1110          */
1111
1112         if (params->listen_interval >= 0)
1113                 sta->listen_interval = params->listen_interval;
1114
1115         if (params->supported_rates) {
1116                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1117                                          sband, params->supported_rates,
1118                                          params->supported_rates_len,
1119                                          &sta->sta.supp_rates[band]);
1120         }
1121
1122         if (params->ht_capa)
1123                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1124                                                   params->ht_capa, sta);
1125
1126         if (params->vht_capa)
1127                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1128                                                     params->vht_capa, sta);
1129
1130         if (params->opmode_notif_used) {
1131                 /* returned value is only needed for rc update, but the
1132                  * rc isn't initialized here yet, so ignore it
1133                  */
1134                 __ieee80211_vht_handle_opmode(sdata, sta,
1135                                               params->opmode_notif,
1136                                               band, false);
1137         }
1138
1139         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1140 #ifdef CONFIG_MAC80211_MESH
1141                 u32 changed = 0;
1142
1143                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1144                         switch (params->plink_state) {
1145                         case NL80211_PLINK_ESTAB:
1146                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1147                                         changed = mesh_plink_inc_estab_count(
1148                                                         sdata);
1149                                 sta->plink_state = params->plink_state;
1150
1151                                 ieee80211_mps_sta_status_update(sta);
1152                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1153                                               sdata->u.mesh.mshcfg.power_mode);
1154                                 break;
1155                         case NL80211_PLINK_LISTEN:
1156                         case NL80211_PLINK_BLOCKED:
1157                         case NL80211_PLINK_OPN_SNT:
1158                         case NL80211_PLINK_OPN_RCVD:
1159                         case NL80211_PLINK_CNF_RCVD:
1160                         case NL80211_PLINK_HOLDING:
1161                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1162                                         changed = mesh_plink_dec_estab_count(
1163                                                         sdata);
1164                                 sta->plink_state = params->plink_state;
1165
1166                                 ieee80211_mps_sta_status_update(sta);
1167                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1168                                                 NL80211_MESH_POWER_UNKNOWN);
1169                                 break;
1170                         default:
1171                                 /*  nothing  */
1172                                 break;
1173                         }
1174                 }
1175
1176                 switch (params->plink_action) {
1177                 case NL80211_PLINK_ACTION_NO_ACTION:
1178                         /* nothing */
1179                         break;
1180                 case NL80211_PLINK_ACTION_OPEN:
1181                         changed |= mesh_plink_open(sta);
1182                         break;
1183                 case NL80211_PLINK_ACTION_BLOCK:
1184                         changed |= mesh_plink_block(sta);
1185                         break;
1186                 }
1187
1188                 if (params->local_pm)
1189                         changed |=
1190                               ieee80211_mps_set_sta_local_pm(sta,
1191                                                              params->local_pm);
1192                 ieee80211_mbss_info_change_notify(sdata, changed);
1193 #endif
1194         }
1195
1196         /* set the STA state after all sta info from usermode has been set */
1197         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1198                 ret = sta_apply_auth_flags(local, sta, mask, set);
1199                 if (ret)
1200                         return ret;
1201         }
1202
1203         return 0;
1204 }
1205
1206 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1207                                  const u8 *mac,
1208                                  struct station_parameters *params)
1209 {
1210         struct ieee80211_local *local = wiphy_priv(wiphy);
1211         struct sta_info *sta;
1212         struct ieee80211_sub_if_data *sdata;
1213         int err;
1214         int layer2_update;
1215
1216         if (params->vlan) {
1217                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1218
1219                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1220                     sdata->vif.type != NL80211_IFTYPE_AP)
1221                         return -EINVAL;
1222         } else
1223                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1224
1225         if (ether_addr_equal(mac, sdata->vif.addr))
1226                 return -EINVAL;
1227
1228         if (is_multicast_ether_addr(mac))
1229                 return -EINVAL;
1230
1231         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1232         if (!sta)
1233                 return -ENOMEM;
1234
1235         /*
1236          * defaults -- if userspace wants something else we'll
1237          * change it accordingly in sta_apply_parameters()
1238          */
1239         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1240                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1241                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1242         } else {
1243                 sta->sta.tdls = true;
1244         }
1245
1246         err = sta_apply_parameters(local, sta, params);
1247         if (err) {
1248                 sta_info_free(local, sta);
1249                 return err;
1250         }
1251
1252         /*
1253          * for TDLS, rate control should be initialized only when
1254          * rates are known and station is marked authorized
1255          */
1256         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1257                 rate_control_rate_init(sta);
1258
1259         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1260                 sdata->vif.type == NL80211_IFTYPE_AP;
1261
1262         err = sta_info_insert_rcu(sta);
1263         if (err) {
1264                 rcu_read_unlock();
1265                 return err;
1266         }
1267
1268         if (layer2_update)
1269                 ieee80211_send_layer2_update(sta);
1270
1271         rcu_read_unlock();
1272
1273         return 0;
1274 }
1275
1276 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1277                                  struct station_del_parameters *params)
1278 {
1279         struct ieee80211_sub_if_data *sdata;
1280
1281         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1282
1283         if (params->mac)
1284                 return sta_info_destroy_addr_bss(sdata, params->mac);
1285
1286         sta_info_flush(sdata);
1287         return 0;
1288 }
1289
1290 static int ieee80211_change_station(struct wiphy *wiphy,
1291                                     struct net_device *dev, const u8 *mac,
1292                                     struct station_parameters *params)
1293 {
1294         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1295         struct ieee80211_local *local = wiphy_priv(wiphy);
1296         struct sta_info *sta;
1297         struct ieee80211_sub_if_data *vlansdata;
1298         enum cfg80211_station_type statype;
1299         int err;
1300
1301         mutex_lock(&local->sta_mtx);
1302
1303         sta = sta_info_get_bss(sdata, mac);
1304         if (!sta) {
1305                 err = -ENOENT;
1306                 goto out_err;
1307         }
1308
1309         switch (sdata->vif.type) {
1310         case NL80211_IFTYPE_MESH_POINT:
1311                 if (sdata->u.mesh.user_mpm)
1312                         statype = CFG80211_STA_MESH_PEER_USER;
1313                 else
1314                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1315                 break;
1316         case NL80211_IFTYPE_ADHOC:
1317                 statype = CFG80211_STA_IBSS;
1318                 break;
1319         case NL80211_IFTYPE_STATION:
1320                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1321                         statype = CFG80211_STA_AP_STA;
1322                         break;
1323                 }
1324                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1325                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1326                 else
1327                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1328                 break;
1329         case NL80211_IFTYPE_AP:
1330         case NL80211_IFTYPE_AP_VLAN:
1331                 statype = CFG80211_STA_AP_CLIENT;
1332                 break;
1333         default:
1334                 err = -EOPNOTSUPP;
1335                 goto out_err;
1336         }
1337
1338         err = cfg80211_check_station_change(wiphy, params, statype);
1339         if (err)
1340                 goto out_err;
1341
1342         if (params->vlan && params->vlan != sta->sdata->dev) {
1343                 bool prev_4addr = false;
1344                 bool new_4addr = false;
1345
1346                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1347
1348                 if (params->vlan->ieee80211_ptr->use_4addr) {
1349                         if (vlansdata->u.vlan.sta) {
1350                                 err = -EBUSY;
1351                                 goto out_err;
1352                         }
1353
1354                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1355                         new_4addr = true;
1356                 }
1357
1358                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1359                     sta->sdata->u.vlan.sta) {
1360                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1361                         prev_4addr = true;
1362                 }
1363
1364                 sta->sdata = vlansdata;
1365
1366                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1367                     prev_4addr != new_4addr) {
1368                         if (new_4addr)
1369                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1370                         else
1371                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1372                 }
1373
1374                 ieee80211_send_layer2_update(sta);
1375         }
1376
1377         err = sta_apply_parameters(local, sta, params);
1378         if (err)
1379                 goto out_err;
1380
1381         /* When peer becomes authorized, init rate control as well */
1382         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1383             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1384                 rate_control_rate_init(sta);
1385
1386         mutex_unlock(&local->sta_mtx);
1387
1388         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1389              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1390             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1391             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1392             sta_info_tx_streams(sta) != 1) {
1393                 ht_dbg(sta->sdata,
1394                        "%pM just authorized and MIMO capable - update SMPS\n",
1395                        sta->sta.addr);
1396                 ieee80211_send_smps_action(sta->sdata,
1397                         sta->sdata->bss->req_smps,
1398                         sta->sta.addr,
1399                         sta->sdata->vif.bss_conf.bssid);
1400         }
1401
1402         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1403             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1404                 ieee80211_recalc_ps(local, -1);
1405                 ieee80211_recalc_ps_vif(sdata);
1406         }
1407
1408         return 0;
1409 out_err:
1410         mutex_unlock(&local->sta_mtx);
1411         return err;
1412 }
1413
1414 #ifdef CONFIG_MAC80211_MESH
1415 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1416                                const u8 *dst, const u8 *next_hop)
1417 {
1418         struct ieee80211_sub_if_data *sdata;
1419         struct mesh_path *mpath;
1420         struct sta_info *sta;
1421
1422         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1423
1424         rcu_read_lock();
1425         sta = sta_info_get(sdata, next_hop);
1426         if (!sta) {
1427                 rcu_read_unlock();
1428                 return -ENOENT;
1429         }
1430
1431         mpath = mesh_path_add(sdata, dst);
1432         if (IS_ERR(mpath)) {
1433                 rcu_read_unlock();
1434                 return PTR_ERR(mpath);
1435         }
1436
1437         mesh_path_fix_nexthop(mpath, sta);
1438
1439         rcu_read_unlock();
1440         return 0;
1441 }
1442
1443 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1444                                const u8 *dst)
1445 {
1446         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1447
1448         if (dst)
1449                 return mesh_path_del(sdata, dst);
1450
1451         mesh_path_flush_by_iface(sdata);
1452         return 0;
1453 }
1454
1455 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1456                                   const u8 *dst, const u8 *next_hop)
1457 {
1458         struct ieee80211_sub_if_data *sdata;
1459         struct mesh_path *mpath;
1460         struct sta_info *sta;
1461
1462         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1463
1464         rcu_read_lock();
1465
1466         sta = sta_info_get(sdata, next_hop);
1467         if (!sta) {
1468                 rcu_read_unlock();
1469                 return -ENOENT;
1470         }
1471
1472         mpath = mesh_path_lookup(sdata, dst);
1473         if (!mpath) {
1474                 rcu_read_unlock();
1475                 return -ENOENT;
1476         }
1477
1478         mesh_path_fix_nexthop(mpath, sta);
1479
1480         rcu_read_unlock();
1481         return 0;
1482 }
1483
1484 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1485                             struct mpath_info *pinfo)
1486 {
1487         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1488
1489         if (next_hop_sta)
1490                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1491         else
1492                 memset(next_hop, 0, ETH_ALEN);
1493
1494         memset(pinfo, 0, sizeof(*pinfo));
1495
1496         pinfo->generation = mesh_paths_generation;
1497
1498         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1499                         MPATH_INFO_SN |
1500                         MPATH_INFO_METRIC |
1501                         MPATH_INFO_EXPTIME |
1502                         MPATH_INFO_DISCOVERY_TIMEOUT |
1503                         MPATH_INFO_DISCOVERY_RETRIES |
1504                         MPATH_INFO_FLAGS;
1505
1506         pinfo->frame_qlen = mpath->frame_queue.qlen;
1507         pinfo->sn = mpath->sn;
1508         pinfo->metric = mpath->metric;
1509         if (time_before(jiffies, mpath->exp_time))
1510                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1511         pinfo->discovery_timeout =
1512                         jiffies_to_msecs(mpath->discovery_timeout);
1513         pinfo->discovery_retries = mpath->discovery_retries;
1514         if (mpath->flags & MESH_PATH_ACTIVE)
1515                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1516         if (mpath->flags & MESH_PATH_RESOLVING)
1517                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1518         if (mpath->flags & MESH_PATH_SN_VALID)
1519                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1520         if (mpath->flags & MESH_PATH_FIXED)
1521                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1522         if (mpath->flags & MESH_PATH_RESOLVED)
1523                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1524 }
1525
1526 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1527                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1528
1529 {
1530         struct ieee80211_sub_if_data *sdata;
1531         struct mesh_path *mpath;
1532
1533         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1534
1535         rcu_read_lock();
1536         mpath = mesh_path_lookup(sdata, dst);
1537         if (!mpath) {
1538                 rcu_read_unlock();
1539                 return -ENOENT;
1540         }
1541         memcpy(dst, mpath->dst, ETH_ALEN);
1542         mpath_set_pinfo(mpath, next_hop, pinfo);
1543         rcu_read_unlock();
1544         return 0;
1545 }
1546
1547 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1548                                 int idx, u8 *dst, u8 *next_hop,
1549                                 struct mpath_info *pinfo)
1550 {
1551         struct ieee80211_sub_if_data *sdata;
1552         struct mesh_path *mpath;
1553
1554         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1555
1556         rcu_read_lock();
1557         mpath = mesh_path_lookup_by_idx(sdata, idx);
1558         if (!mpath) {
1559                 rcu_read_unlock();
1560                 return -ENOENT;
1561         }
1562         memcpy(dst, mpath->dst, ETH_ALEN);
1563         mpath_set_pinfo(mpath, next_hop, pinfo);
1564         rcu_read_unlock();
1565         return 0;
1566 }
1567
1568 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1569                           struct mpath_info *pinfo)
1570 {
1571         memset(pinfo, 0, sizeof(*pinfo));
1572         memcpy(mpp, mpath->mpp, ETH_ALEN);
1573
1574         pinfo->generation = mpp_paths_generation;
1575 }
1576
1577 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1578                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1579
1580 {
1581         struct ieee80211_sub_if_data *sdata;
1582         struct mesh_path *mpath;
1583
1584         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1585
1586         rcu_read_lock();
1587         mpath = mpp_path_lookup(sdata, dst);
1588         if (!mpath) {
1589                 rcu_read_unlock();
1590                 return -ENOENT;
1591         }
1592         memcpy(dst, mpath->dst, ETH_ALEN);
1593         mpp_set_pinfo(mpath, mpp, pinfo);
1594         rcu_read_unlock();
1595         return 0;
1596 }
1597
1598 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1599                               int idx, u8 *dst, u8 *mpp,
1600                               struct mpath_info *pinfo)
1601 {
1602         struct ieee80211_sub_if_data *sdata;
1603         struct mesh_path *mpath;
1604
1605         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1606
1607         rcu_read_lock();
1608         mpath = mpp_path_lookup_by_idx(sdata, idx);
1609         if (!mpath) {
1610                 rcu_read_unlock();
1611                 return -ENOENT;
1612         }
1613         memcpy(dst, mpath->dst, ETH_ALEN);
1614         mpp_set_pinfo(mpath, mpp, pinfo);
1615         rcu_read_unlock();
1616         return 0;
1617 }
1618
1619 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1620                                 struct net_device *dev,
1621                                 struct mesh_config *conf)
1622 {
1623         struct ieee80211_sub_if_data *sdata;
1624         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1625
1626         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1627         return 0;
1628 }
1629
1630 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1631 {
1632         return (mask >> (parm-1)) & 0x1;
1633 }
1634
1635 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1636                 const struct mesh_setup *setup)
1637 {
1638         u8 *new_ie;
1639         const u8 *old_ie;
1640         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1641                                         struct ieee80211_sub_if_data, u.mesh);
1642
1643         /* allocate information elements */
1644         new_ie = NULL;
1645         old_ie = ifmsh->ie;
1646
1647         if (setup->ie_len) {
1648                 new_ie = kmemdup(setup->ie, setup->ie_len,
1649                                 GFP_KERNEL);
1650                 if (!new_ie)
1651                         return -ENOMEM;
1652         }
1653         ifmsh->ie_len = setup->ie_len;
1654         ifmsh->ie = new_ie;
1655         kfree(old_ie);
1656
1657         /* now copy the rest of the setup parameters */
1658         ifmsh->mesh_id_len = setup->mesh_id_len;
1659         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1660         ifmsh->mesh_sp_id = setup->sync_method;
1661         ifmsh->mesh_pp_id = setup->path_sel_proto;
1662         ifmsh->mesh_pm_id = setup->path_metric;
1663         ifmsh->user_mpm = setup->user_mpm;
1664         ifmsh->mesh_auth_id = setup->auth_id;
1665         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1666         if (setup->is_authenticated)
1667                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1668         if (setup->is_secure)
1669                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1670
1671         /* mcast rate setting in Mesh Node */
1672         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1673                                                 sizeof(setup->mcast_rate));
1674         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1675
1676         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1677         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1678
1679         return 0;
1680 }
1681
1682 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1683                                         struct net_device *dev, u32 mask,
1684                                         const struct mesh_config *nconf)
1685 {
1686         struct mesh_config *conf;
1687         struct ieee80211_sub_if_data *sdata;
1688         struct ieee80211_if_mesh *ifmsh;
1689
1690         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1691         ifmsh = &sdata->u.mesh;
1692
1693         /* Set the config options which we are interested in setting */
1694         conf = &(sdata->u.mesh.mshcfg);
1695         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1696                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1697         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1698                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1699         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1700                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1701         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1702                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1703         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1704                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1705         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1706                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1707         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1708                 conf->element_ttl = nconf->element_ttl;
1709         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1710                 if (ifmsh->user_mpm)
1711                         return -EBUSY;
1712                 conf->auto_open_plinks = nconf->auto_open_plinks;
1713         }
1714         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1715                 conf->dot11MeshNbrOffsetMaxNeighbor =
1716                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1717         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1718                 conf->dot11MeshHWMPmaxPREQretries =
1719                         nconf->dot11MeshHWMPmaxPREQretries;
1720         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1721                 conf->path_refresh_time = nconf->path_refresh_time;
1722         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1723                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1724         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1725                 conf->dot11MeshHWMPactivePathTimeout =
1726                         nconf->dot11MeshHWMPactivePathTimeout;
1727         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1728                 conf->dot11MeshHWMPpreqMinInterval =
1729                         nconf->dot11MeshHWMPpreqMinInterval;
1730         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1731                 conf->dot11MeshHWMPperrMinInterval =
1732                         nconf->dot11MeshHWMPperrMinInterval;
1733         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1734                            mask))
1735                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1736                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1737         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1738                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1739                 ieee80211_mesh_root_setup(ifmsh);
1740         }
1741         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1742                 /* our current gate announcement implementation rides on root
1743                  * announcements, so require this ifmsh to also be a root node
1744                  * */
1745                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1746                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1747                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1748                         ieee80211_mesh_root_setup(ifmsh);
1749                 }
1750                 conf->dot11MeshGateAnnouncementProtocol =
1751                         nconf->dot11MeshGateAnnouncementProtocol;
1752         }
1753         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1754                 conf->dot11MeshHWMPRannInterval =
1755                         nconf->dot11MeshHWMPRannInterval;
1756         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1757                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1758         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1759                 /* our RSSI threshold implementation is supported only for
1760                  * devices that report signal in dBm.
1761                  */
1762                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1763                         return -ENOTSUPP;
1764                 conf->rssi_threshold = nconf->rssi_threshold;
1765         }
1766         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1767                 conf->ht_opmode = nconf->ht_opmode;
1768                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1769                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1770         }
1771         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1772                 conf->dot11MeshHWMPactivePathToRootTimeout =
1773                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1774         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1775                 conf->dot11MeshHWMProotInterval =
1776                         nconf->dot11MeshHWMProotInterval;
1777         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1778                 conf->dot11MeshHWMPconfirmationInterval =
1779                         nconf->dot11MeshHWMPconfirmationInterval;
1780         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1781                 conf->power_mode = nconf->power_mode;
1782                 ieee80211_mps_local_status_update(sdata);
1783         }
1784         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1785                 conf->dot11MeshAwakeWindowDuration =
1786                         nconf->dot11MeshAwakeWindowDuration;
1787         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1788                 conf->plink_timeout = nconf->plink_timeout;
1789         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1790         return 0;
1791 }
1792
1793 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1794                                const struct mesh_config *conf,
1795                                const struct mesh_setup *setup)
1796 {
1797         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1798         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1799         int err;
1800
1801         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1802         err = copy_mesh_setup(ifmsh, setup);
1803         if (err)
1804                 return err;
1805
1806         /* can mesh use other SMPS modes? */
1807         sdata->smps_mode = IEEE80211_SMPS_OFF;
1808         sdata->needed_rx_chains = sdata->local->rx_chains;
1809
1810         mutex_lock(&sdata->local->mtx);
1811         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1812                                         IEEE80211_CHANCTX_SHARED);
1813         mutex_unlock(&sdata->local->mtx);
1814         if (err)
1815                 return err;
1816
1817         return ieee80211_start_mesh(sdata);
1818 }
1819
1820 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1821 {
1822         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1823
1824         ieee80211_stop_mesh(sdata);
1825         mutex_lock(&sdata->local->mtx);
1826         ieee80211_vif_release_channel(sdata);
1827         mutex_unlock(&sdata->local->mtx);
1828
1829         return 0;
1830 }
1831 #endif
1832
1833 static int ieee80211_change_bss(struct wiphy *wiphy,
1834                                 struct net_device *dev,
1835                                 struct bss_parameters *params)
1836 {
1837         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1838         enum ieee80211_band band;
1839         u32 changed = 0;
1840
1841         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1842                 return -ENOENT;
1843
1844         band = ieee80211_get_sdata_band(sdata);
1845
1846         if (params->use_cts_prot >= 0) {
1847                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1848                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1849         }
1850         if (params->use_short_preamble >= 0) {
1851                 sdata->vif.bss_conf.use_short_preamble =
1852                         params->use_short_preamble;
1853                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1854         }
1855
1856         if (!sdata->vif.bss_conf.use_short_slot &&
1857             band == IEEE80211_BAND_5GHZ) {
1858                 sdata->vif.bss_conf.use_short_slot = true;
1859                 changed |= BSS_CHANGED_ERP_SLOT;
1860         }
1861
1862         if (params->use_short_slot_time >= 0) {
1863                 sdata->vif.bss_conf.use_short_slot =
1864                         params->use_short_slot_time;
1865                 changed |= BSS_CHANGED_ERP_SLOT;
1866         }
1867
1868         if (params->basic_rates) {
1869                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1870                                          wiphy->bands[band],
1871                                          params->basic_rates,
1872                                          params->basic_rates_len,
1873                                          &sdata->vif.bss_conf.basic_rates);
1874                 changed |= BSS_CHANGED_BASIC_RATES;
1875         }
1876
1877         if (params->ap_isolate >= 0) {
1878                 if (params->ap_isolate)
1879                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1880                 else
1881                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1882         }
1883
1884         if (params->ht_opmode >= 0) {
1885                 sdata->vif.bss_conf.ht_operation_mode =
1886                         (u16) params->ht_opmode;
1887                 changed |= BSS_CHANGED_HT;
1888         }
1889
1890         if (params->p2p_ctwindow >= 0) {
1891                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1892                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1893                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1894                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1895                 changed |= BSS_CHANGED_P2P_PS;
1896         }
1897
1898         if (params->p2p_opp_ps > 0) {
1899                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1900                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1901                 changed |= BSS_CHANGED_P2P_PS;
1902         } else if (params->p2p_opp_ps == 0) {
1903                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1904                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1905                 changed |= BSS_CHANGED_P2P_PS;
1906         }
1907
1908         ieee80211_bss_info_change_notify(sdata, changed);
1909
1910         return 0;
1911 }
1912
1913 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1914                                     struct net_device *dev,
1915                                     struct ieee80211_txq_params *params)
1916 {
1917         struct ieee80211_local *local = wiphy_priv(wiphy);
1918         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1919         struct ieee80211_tx_queue_params p;
1920
1921         if (!local->ops->conf_tx)
1922                 return -EOPNOTSUPP;
1923
1924         if (local->hw.queues < IEEE80211_NUM_ACS)
1925                 return -EOPNOTSUPP;
1926
1927         memset(&p, 0, sizeof(p));
1928         p.aifs = params->aifs;
1929         p.cw_max = params->cwmax;
1930         p.cw_min = params->cwmin;
1931         p.txop = params->txop;
1932
1933         /*
1934          * Setting tx queue params disables u-apsd because it's only
1935          * called in master mode.
1936          */
1937         p.uapsd = false;
1938
1939         sdata->tx_conf[params->ac] = p;
1940         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1941                 wiphy_debug(local->hw.wiphy,
1942                             "failed to set TX queue parameters for AC %d\n",
1943                             params->ac);
1944                 return -EINVAL;
1945         }
1946
1947         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1948
1949         return 0;
1950 }
1951
1952 #ifdef CONFIG_PM
1953 static int ieee80211_suspend(struct wiphy *wiphy,
1954                              struct cfg80211_wowlan *wowlan)
1955 {
1956         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1957 }
1958
1959 static int ieee80211_resume(struct wiphy *wiphy)
1960 {
1961         return __ieee80211_resume(wiphy_priv(wiphy));
1962 }
1963 #else
1964 #define ieee80211_suspend NULL
1965 #define ieee80211_resume NULL
1966 #endif
1967
1968 static int ieee80211_scan(struct wiphy *wiphy,
1969                           struct cfg80211_scan_request *req)
1970 {
1971         struct ieee80211_sub_if_data *sdata;
1972
1973         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1974
1975         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1976         case NL80211_IFTYPE_STATION:
1977         case NL80211_IFTYPE_ADHOC:
1978         case NL80211_IFTYPE_MESH_POINT:
1979         case NL80211_IFTYPE_P2P_CLIENT:
1980         case NL80211_IFTYPE_P2P_DEVICE:
1981                 break;
1982         case NL80211_IFTYPE_P2P_GO:
1983                 if (sdata->local->ops->hw_scan)
1984                         break;
1985                 /*
1986                  * FIXME: implement NoA while scanning in software,
1987                  * for now fall through to allow scanning only when
1988                  * beaconing hasn't been configured yet
1989                  */
1990         case NL80211_IFTYPE_AP:
1991                 /*
1992                  * If the scan has been forced (and the driver supports
1993                  * forcing), don't care about being beaconing already.
1994                  * This will create problems to the attached stations (e.g. all
1995                  * the  frames sent while scanning on other channel will be
1996                  * lost)
1997                  */
1998                 if (sdata->u.ap.beacon &&
1999                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2000                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2001                         return -EOPNOTSUPP;
2002                 break;
2003         default:
2004                 return -EOPNOTSUPP;
2005         }
2006
2007         return ieee80211_request_scan(sdata, req);
2008 }
2009
2010 static int
2011 ieee80211_sched_scan_start(struct wiphy *wiphy,
2012                            struct net_device *dev,
2013                            struct cfg80211_sched_scan_request *req)
2014 {
2015         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2016
2017         if (!sdata->local->ops->sched_scan_start)
2018                 return -EOPNOTSUPP;
2019
2020         return ieee80211_request_sched_scan_start(sdata, req);
2021 }
2022
2023 static int
2024 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2025 {
2026         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2027
2028         if (!sdata->local->ops->sched_scan_stop)
2029                 return -EOPNOTSUPP;
2030
2031         return ieee80211_request_sched_scan_stop(sdata);
2032 }
2033
2034 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2035                           struct cfg80211_auth_request *req)
2036 {
2037         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2038 }
2039
2040 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2041                            struct cfg80211_assoc_request *req)
2042 {
2043         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2044 }
2045
2046 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2047                             struct cfg80211_deauth_request *req)
2048 {
2049         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2050 }
2051
2052 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2053                               struct cfg80211_disassoc_request *req)
2054 {
2055         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2056 }
2057
2058 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2059                                struct cfg80211_ibss_params *params)
2060 {
2061         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2062 }
2063
2064 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2065 {
2066         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2067 }
2068
2069 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2070                               struct ocb_setup *setup)
2071 {
2072         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2073 }
2074
2075 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2076 {
2077         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2078 }
2079
2080 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2081                                     int rate[IEEE80211_NUM_BANDS])
2082 {
2083         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2084
2085         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2086                sizeof(int) * IEEE80211_NUM_BANDS);
2087
2088         return 0;
2089 }
2090
2091 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2092 {
2093         struct ieee80211_local *local = wiphy_priv(wiphy);
2094         int err;
2095
2096         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2097                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2098
2099                 if (err)
2100                         return err;
2101         }
2102
2103         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2104             (changed & WIPHY_PARAM_DYN_ACK)) {
2105                 s16 coverage_class;
2106
2107                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2108                                         wiphy->coverage_class : -1;
2109                 err = drv_set_coverage_class(local, coverage_class);
2110
2111                 if (err)
2112                         return err;
2113         }
2114
2115         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2116                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2117
2118                 if (err)
2119                         return err;
2120         }
2121
2122         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2123                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2124                         return -EINVAL;
2125                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2126         }
2127         if (changed & WIPHY_PARAM_RETRY_LONG) {
2128                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2129                         return -EINVAL;
2130                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2131         }
2132         if (changed &
2133             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2134                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2135
2136         return 0;
2137 }
2138
2139 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2140                                   struct wireless_dev *wdev,
2141                                   enum nl80211_tx_power_setting type, int mbm)
2142 {
2143         struct ieee80211_local *local = wiphy_priv(wiphy);
2144         struct ieee80211_sub_if_data *sdata;
2145         enum nl80211_tx_power_setting txp_type = type;
2146         bool update_txp_type = false;
2147
2148         if (wdev) {
2149                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2150
2151                 switch (type) {
2152                 case NL80211_TX_POWER_AUTOMATIC:
2153                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2154                         txp_type = NL80211_TX_POWER_LIMITED;
2155                         break;
2156                 case NL80211_TX_POWER_LIMITED:
2157                 case NL80211_TX_POWER_FIXED:
2158                         if (mbm < 0 || (mbm % 100))
2159                                 return -EOPNOTSUPP;
2160                         sdata->user_power_level = MBM_TO_DBM(mbm);
2161                         break;
2162                 }
2163
2164                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2165                         update_txp_type = true;
2166                         sdata->vif.bss_conf.txpower_type = txp_type;
2167                 }
2168
2169                 ieee80211_recalc_txpower(sdata, update_txp_type);
2170
2171                 return 0;
2172         }
2173
2174         switch (type) {
2175         case NL80211_TX_POWER_AUTOMATIC:
2176                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2177                 txp_type = NL80211_TX_POWER_LIMITED;
2178                 break;
2179         case NL80211_TX_POWER_LIMITED:
2180         case NL80211_TX_POWER_FIXED:
2181                 if (mbm < 0 || (mbm % 100))
2182                         return -EOPNOTSUPP;
2183                 local->user_power_level = MBM_TO_DBM(mbm);
2184                 break;
2185         }
2186
2187         mutex_lock(&local->iflist_mtx);
2188         list_for_each_entry(sdata, &local->interfaces, list) {
2189                 sdata->user_power_level = local->user_power_level;
2190                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2191                         update_txp_type = true;
2192                 sdata->vif.bss_conf.txpower_type = txp_type;
2193         }
2194         list_for_each_entry(sdata, &local->interfaces, list)
2195                 ieee80211_recalc_txpower(sdata, update_txp_type);
2196         mutex_unlock(&local->iflist_mtx);
2197
2198         return 0;
2199 }
2200
2201 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2202                                   struct wireless_dev *wdev,
2203                                   int *dbm)
2204 {
2205         struct ieee80211_local *local = wiphy_priv(wiphy);
2206         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2207
2208         if (local->ops->get_txpower)
2209                 return drv_get_txpower(local, sdata, dbm);
2210
2211         if (!local->use_chanctx)
2212                 *dbm = local->hw.conf.power_level;
2213         else
2214                 *dbm = sdata->vif.bss_conf.txpower;
2215
2216         return 0;
2217 }
2218
2219 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2220                                   const u8 *addr)
2221 {
2222         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2223
2224         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2225
2226         return 0;
2227 }
2228
2229 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2230 {
2231         struct ieee80211_local *local = wiphy_priv(wiphy);
2232
2233         drv_rfkill_poll(local);
2234 }
2235
2236 #ifdef CONFIG_NL80211_TESTMODE
2237 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2238                                   struct wireless_dev *wdev,
2239                                   void *data, int len)
2240 {
2241         struct ieee80211_local *local = wiphy_priv(wiphy);
2242         struct ieee80211_vif *vif = NULL;
2243
2244         if (!local->ops->testmode_cmd)
2245                 return -EOPNOTSUPP;
2246
2247         if (wdev) {
2248                 struct ieee80211_sub_if_data *sdata;
2249
2250                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2251                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2252                         vif = &sdata->vif;
2253         }
2254
2255         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2256 }
2257
2258 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2259                                    struct sk_buff *skb,
2260                                    struct netlink_callback *cb,
2261                                    void *data, int len)
2262 {
2263         struct ieee80211_local *local = wiphy_priv(wiphy);
2264
2265         if (!local->ops->testmode_dump)
2266                 return -EOPNOTSUPP;
2267
2268         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2269 }
2270 #endif
2271
2272 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2273                                 enum ieee80211_smps_mode smps_mode)
2274 {
2275         struct sta_info *sta;
2276         enum ieee80211_smps_mode old_req;
2277
2278         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2279                 return -EINVAL;
2280
2281         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2282                 return 0;
2283
2284         old_req = sdata->u.ap.req_smps;
2285         sdata->u.ap.req_smps = smps_mode;
2286
2287         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2288         if (old_req == smps_mode ||
2289             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2290                 return 0;
2291
2292          /* If no associated stations, there's no need to do anything */
2293         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2294                 sdata->smps_mode = smps_mode;
2295                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2296                 return 0;
2297         }
2298
2299         ht_dbg(sdata,
2300                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2301                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2302
2303         mutex_lock(&sdata->local->sta_mtx);
2304         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2305                 /*
2306                  * Only stations associated to our AP and
2307                  * associated VLANs
2308                  */
2309                 if (sta->sdata->bss != &sdata->u.ap)
2310                         continue;
2311
2312                 /* This station doesn't support MIMO - skip it */
2313                 if (sta_info_tx_streams(sta) == 1)
2314                         continue;
2315
2316                 /*
2317                  * Don't wake up a STA just to send the action frame
2318                  * unless we are getting more restrictive.
2319                  */
2320                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2321                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2322                                                    smps_mode)) {
2323                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2324                                sta->sta.addr);
2325                         continue;
2326                 }
2327
2328                 /*
2329                  * If the STA is not authorized, wait until it gets
2330                  * authorized and the action frame will be sent then.
2331                  */
2332                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2333                         continue;
2334
2335                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2336                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2337                                            sdata->vif.bss_conf.bssid);
2338         }
2339         mutex_unlock(&sdata->local->sta_mtx);
2340
2341         sdata->smps_mode = smps_mode;
2342         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2343
2344         return 0;
2345 }
2346
2347 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2348                                  enum ieee80211_smps_mode smps_mode)
2349 {
2350         const u8 *ap;
2351         enum ieee80211_smps_mode old_req;
2352         int err;
2353
2354         lockdep_assert_held(&sdata->wdev.mtx);
2355
2356         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2357                 return -EINVAL;
2358
2359         old_req = sdata->u.mgd.req_smps;
2360         sdata->u.mgd.req_smps = smps_mode;
2361
2362         if (old_req == smps_mode &&
2363             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2364                 return 0;
2365
2366         /*
2367          * If not associated, or current association is not an HT
2368          * association, there's no need to do anything, just store
2369          * the new value until we associate.
2370          */
2371         if (!sdata->u.mgd.associated ||
2372             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2373                 return 0;
2374
2375         ap = sdata->u.mgd.associated->bssid;
2376
2377         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2378                 if (sdata->u.mgd.powersave)
2379                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2380                 else
2381                         smps_mode = IEEE80211_SMPS_OFF;
2382         }
2383
2384         /* send SM PS frame to AP */
2385         err = ieee80211_send_smps_action(sdata, smps_mode,
2386                                          ap, ap);
2387         if (err)
2388                 sdata->u.mgd.req_smps = old_req;
2389
2390         return err;
2391 }
2392
2393 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2394                                     bool enabled, int timeout)
2395 {
2396         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2397         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2398
2399         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2400                 return -EOPNOTSUPP;
2401
2402         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2403                 return -EOPNOTSUPP;
2404
2405         if (enabled == sdata->u.mgd.powersave &&
2406             timeout == local->dynamic_ps_forced_timeout)
2407                 return 0;
2408
2409         sdata->u.mgd.powersave = enabled;
2410         local->dynamic_ps_forced_timeout = timeout;
2411
2412         /* no change, but if automatic follow powersave */
2413         sdata_lock(sdata);
2414         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2415         sdata_unlock(sdata);
2416
2417         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2418                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2419
2420         ieee80211_recalc_ps(local, -1);
2421         ieee80211_recalc_ps_vif(sdata);
2422
2423         return 0;
2424 }
2425
2426 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2427                                          struct net_device *dev,
2428                                          s32 rssi_thold, u32 rssi_hyst)
2429 {
2430         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2431         struct ieee80211_vif *vif = &sdata->vif;
2432         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2433
2434         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2435             rssi_hyst == bss_conf->cqm_rssi_hyst)
2436                 return 0;
2437
2438         bss_conf->cqm_rssi_thold = rssi_thold;
2439         bss_conf->cqm_rssi_hyst = rssi_hyst;
2440
2441         /* tell the driver upon association, unless already associated */
2442         if (sdata->u.mgd.associated &&
2443             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2444                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2445
2446         return 0;
2447 }
2448
2449 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2450                                       struct net_device *dev,
2451                                       const u8 *addr,
2452                                       const struct cfg80211_bitrate_mask *mask)
2453 {
2454         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2455         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2456         int i, ret;
2457
2458         if (!ieee80211_sdata_running(sdata))
2459                 return -ENETDOWN;
2460
2461         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2462                 ret = drv_set_bitrate_mask(local, sdata, mask);
2463                 if (ret)
2464                         return ret;
2465         }
2466
2467         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2468                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2469                 int j;
2470
2471                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2472                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2473                        sizeof(mask->control[i].ht_mcs));
2474
2475                 sdata->rc_has_mcs_mask[i] = false;
2476                 if (!sband)
2477                         continue;
2478
2479                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2480                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2481                                 sdata->rc_has_mcs_mask[i] = true;
2482                                 break;
2483                         }
2484         }
2485
2486         return 0;
2487 }
2488
2489 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2490                                            struct ieee80211_roc_work *new_roc,
2491                                            struct ieee80211_roc_work *cur_roc)
2492 {
2493         unsigned long j = jiffies;
2494         unsigned long cur_roc_end = cur_roc->hw_start_time +
2495                                     msecs_to_jiffies(cur_roc->duration);
2496         struct ieee80211_roc_work *next_roc;
2497         int new_dur;
2498
2499         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2500                 return false;
2501
2502         if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
2503                 return false;
2504
2505         ieee80211_handle_roc_started(new_roc);
2506
2507         new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);
2508
2509         /* cur_roc is long enough - add new_roc to the dependents list. */
2510         if (new_dur <= 0) {
2511                 list_add_tail(&new_roc->list, &cur_roc->dependents);
2512                 return true;
2513         }
2514
2515         new_roc->duration = new_dur;
2516
2517         /*
2518          * if cur_roc was already coalesced before, we might
2519          * want to extend the next roc instead of adding
2520          * a new one.
2521          */
2522         next_roc = list_entry(cur_roc->list.next,
2523                               struct ieee80211_roc_work, list);
2524         if (&next_roc->list != &local->roc_list &&
2525             next_roc->chan == new_roc->chan &&
2526             next_roc->sdata == new_roc->sdata &&
2527             !WARN_ON(next_roc->started)) {
2528                 list_add_tail(&new_roc->list, &next_roc->dependents);
2529                 next_roc->duration = max(next_roc->duration,
2530                                          new_roc->duration);
2531                 next_roc->type = max(next_roc->type, new_roc->type);
2532                 return true;
2533         }
2534
2535         /* add right after cur_roc */
2536         list_add(&new_roc->list, &cur_roc->list);
2537
2538         return true;
2539 }
2540
2541 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2542                                     struct ieee80211_sub_if_data *sdata,
2543                                     struct ieee80211_channel *channel,
2544                                     unsigned int duration, u64 *cookie,
2545                                     struct sk_buff *txskb,
2546                                     enum ieee80211_roc_type type)
2547 {
2548         struct ieee80211_roc_work *roc, *tmp;
2549         bool queued = false;
2550         int ret;
2551
2552         lockdep_assert_held(&local->mtx);
2553
2554         if (local->use_chanctx && !local->ops->remain_on_channel)
2555                 return -EOPNOTSUPP;
2556
2557         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2558         if (!roc)
2559                 return -ENOMEM;
2560
2561         /*
2562          * If the duration is zero, then the driver
2563          * wouldn't actually do anything. Set it to
2564          * 10 for now.
2565          *
2566          * TODO: cancel the off-channel operation
2567          *       when we get the SKB's TX status and
2568          *       the wait time was zero before.
2569          */
2570         if (!duration)
2571                 duration = 10;
2572
2573         roc->chan = channel;
2574         roc->duration = duration;
2575         roc->req_duration = duration;
2576         roc->frame = txskb;
2577         roc->type = type;
2578         roc->mgmt_tx_cookie = (unsigned long)txskb;
2579         roc->sdata = sdata;
2580         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2581         INIT_LIST_HEAD(&roc->dependents);
2582
2583         /*
2584          * cookie is either the roc cookie (for normal roc)
2585          * or the SKB (for mgmt TX)
2586          */
2587         if (!txskb) {
2588                 /* local->mtx protects this */
2589                 local->roc_cookie_counter++;
2590                 roc->cookie = local->roc_cookie_counter;
2591                 /* wow, you wrapped 64 bits ... more likely a bug */
2592                 if (WARN_ON(roc->cookie == 0)) {
2593                         roc->cookie = 1;
2594                         local->roc_cookie_counter++;
2595                 }
2596                 *cookie = roc->cookie;
2597         } else {
2598                 *cookie = (unsigned long)txskb;
2599         }
2600
2601         /* if there's one pending or we're scanning, queue this one */
2602         if (!list_empty(&local->roc_list) ||
2603             local->scanning || ieee80211_is_radar_required(local))
2604                 goto out_check_combine;
2605
2606         /* if not HW assist, just queue & schedule work */
2607         if (!local->ops->remain_on_channel) {
2608                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2609                 goto out_queue;
2610         }
2611
2612         /* otherwise actually kick it off here (for error handling) */
2613
2614         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2615         if (ret) {
2616                 kfree(roc);
2617                 return ret;
2618         }
2619
2620         roc->started = true;
2621         goto out_queue;
2622
2623  out_check_combine:
2624         list_for_each_entry(tmp, &local->roc_list, list) {
2625                 if (tmp->chan != channel || tmp->sdata != sdata)
2626                         continue;
2627
2628                 /*
2629                  * Extend this ROC if possible:
2630                  *
2631                  * If it hasn't started yet, just increase the duration
2632                  * and add the new one to the list of dependents.
2633                  * If the type of the new ROC has higher priority, modify the
2634                  * type of the previous one to match that of the new one.
2635                  */
2636                 if (!tmp->started) {
2637                         list_add_tail(&roc->list, &tmp->dependents);
2638                         tmp->duration = max(tmp->duration, roc->duration);
2639                         tmp->type = max(tmp->type, roc->type);
2640                         queued = true;
2641                         break;
2642                 }
2643
2644                 /* If it has already started, it's more difficult ... */
2645                 if (local->ops->remain_on_channel) {
2646                         /*
2647                          * In the offloaded ROC case, if it hasn't begun, add
2648                          * this new one to the dependent list to be handled
2649                          * when the master one begins. If it has begun,
2650                          * check that there's still a minimum time left and
2651                          * if so, start this one, transmitting the frame, but
2652                          * add it to the list directly after this one with
2653                          * a reduced time so we'll ask the driver to execute
2654                          * it right after finishing the previous one, in the
2655                          * hope that it'll also be executed right afterwards,
2656                          * effectively extending the old one.
2657                          * If there's no minimum time left, just add it to the
2658                          * normal list.
2659                          * TODO: the ROC type is ignored here, assuming that it
2660                          * is better to immediately use the current ROC.
2661                          */
2662                         if (!tmp->hw_begun) {
2663                                 list_add_tail(&roc->list, &tmp->dependents);
2664                                 queued = true;
2665                                 break;
2666                         }
2667
2668                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2669                                 queued = true;
2670                 } else if (del_timer_sync(&tmp->work.timer)) {
2671                         unsigned long new_end;
2672
2673                         /*
2674                          * In the software ROC case, cancel the timer, if
2675                          * that fails then the finish work is already
2676                          * queued/pending and thus we queue the new ROC
2677                          * normally, if that succeeds then we can extend
2678                          * the timer duration and TX the frame (if any.)
2679                          */
2680
2681                         list_add_tail(&roc->list, &tmp->dependents);
2682                         queued = true;
2683
2684                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2685
2686                         /* ok, it was started & we canceled timer */
2687                         if (time_after(new_end, tmp->work.timer.expires))
2688                                 mod_timer(&tmp->work.timer, new_end);
2689                         else
2690                                 add_timer(&tmp->work.timer);
2691
2692                         ieee80211_handle_roc_started(roc);
2693                 }
2694                 break;
2695         }
2696
2697  out_queue:
2698         if (!queued)
2699                 list_add_tail(&roc->list, &local->roc_list);
2700
2701         return 0;
2702 }
2703
2704 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2705                                        struct wireless_dev *wdev,
2706                                        struct ieee80211_channel *chan,
2707                                        unsigned int duration,
2708                                        u64 *cookie)
2709 {
2710         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2711         struct ieee80211_local *local = sdata->local;
2712         int ret;
2713
2714         mutex_lock(&local->mtx);
2715         ret = ieee80211_start_roc_work(local, sdata, chan,
2716                                        duration, cookie, NULL,
2717                                        IEEE80211_ROC_TYPE_NORMAL);
2718         mutex_unlock(&local->mtx);
2719
2720         return ret;
2721 }
2722
2723 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2724                                 u64 cookie, bool mgmt_tx)
2725 {
2726         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2727         int ret;
2728
2729         mutex_lock(&local->mtx);
2730         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2731                 struct ieee80211_roc_work *dep, *tmp2;
2732
2733                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2734                         if (!mgmt_tx && dep->cookie != cookie)
2735                                 continue;
2736                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2737                                 continue;
2738                         /* found dependent item -- just remove it */
2739                         list_del(&dep->list);
2740                         mutex_unlock(&local->mtx);
2741
2742                         ieee80211_roc_notify_destroy(dep, true);
2743                         return 0;
2744                 }
2745
2746                 if (!mgmt_tx && roc->cookie != cookie)
2747                         continue;
2748                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2749                         continue;
2750
2751                 found = roc;
2752                 break;
2753         }
2754
2755         if (!found) {
2756                 mutex_unlock(&local->mtx);
2757                 return -ENOENT;
2758         }
2759
2760         /*
2761          * We found the item to cancel, so do that. Note that it
2762          * may have dependents, which we also cancel (and send
2763          * the expired signal for.) Not doing so would be quite
2764          * tricky here, but we may need to fix it later.
2765          */
2766
2767         if (local->ops->remain_on_channel) {
2768                 if (found->started) {
2769                         ret = drv_cancel_remain_on_channel(local);
2770                         if (WARN_ON_ONCE(ret)) {
2771                                 mutex_unlock(&local->mtx);
2772                                 return ret;
2773                         }
2774                 }
2775
2776                 list_del(&found->list);
2777
2778                 if (found->started)
2779                         ieee80211_start_next_roc(local);
2780                 mutex_unlock(&local->mtx);
2781
2782                 ieee80211_roc_notify_destroy(found, true);
2783         } else {
2784                 /* work may be pending so use it all the time */
2785                 found->abort = true;
2786                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2787
2788                 mutex_unlock(&local->mtx);
2789
2790                 /* work will clean up etc */
2791                 flush_delayed_work(&found->work);
2792                 WARN_ON(!found->to_be_freed);
2793                 kfree(found);
2794         }
2795
2796         return 0;
2797 }
2798
2799 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2800                                               struct wireless_dev *wdev,
2801                                               u64 cookie)
2802 {
2803         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2804         struct ieee80211_local *local = sdata->local;
2805
2806         return ieee80211_cancel_roc(local, cookie, false);
2807 }
2808
2809 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2810                                            struct net_device *dev,
2811                                            struct cfg80211_chan_def *chandef,
2812                                            u32 cac_time_ms)
2813 {
2814         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2815         struct ieee80211_local *local = sdata->local;
2816         int err;
2817
2818         mutex_lock(&local->mtx);
2819         if (!list_empty(&local->roc_list) || local->scanning) {
2820                 err = -EBUSY;
2821                 goto out_unlock;
2822         }
2823
2824         /* whatever, but channel contexts should not complain about that one */
2825         sdata->smps_mode = IEEE80211_SMPS_OFF;
2826         sdata->needed_rx_chains = local->rx_chains;
2827
2828         err = ieee80211_vif_use_channel(sdata, chandef,
2829                                         IEEE80211_CHANCTX_SHARED);
2830         if (err)
2831                 goto out_unlock;
2832
2833         ieee80211_queue_delayed_work(&sdata->local->hw,
2834                                      &sdata->dfs_cac_timer_work,
2835                                      msecs_to_jiffies(cac_time_ms));
2836
2837  out_unlock:
2838         mutex_unlock(&local->mtx);
2839         return err;
2840 }
2841
2842 static struct cfg80211_beacon_data *
2843 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2844 {
2845         struct cfg80211_beacon_data *new_beacon;
2846         u8 *pos;
2847         int len;
2848
2849         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2850               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2851               beacon->probe_resp_len;
2852
2853         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2854         if (!new_beacon)
2855                 return NULL;
2856
2857         pos = (u8 *)(new_beacon + 1);
2858         if (beacon->head_len) {
2859                 new_beacon->head_len = beacon->head_len;
2860                 new_beacon->head = pos;
2861                 memcpy(pos, beacon->head, beacon->head_len);
2862                 pos += beacon->head_len;
2863         }
2864         if (beacon->tail_len) {
2865                 new_beacon->tail_len = beacon->tail_len;
2866                 new_beacon->tail = pos;
2867                 memcpy(pos, beacon->tail, beacon->tail_len);
2868                 pos += beacon->tail_len;
2869         }
2870         if (beacon->beacon_ies_len) {
2871                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2872                 new_beacon->beacon_ies = pos;
2873                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2874                 pos += beacon->beacon_ies_len;
2875         }
2876         if (beacon->proberesp_ies_len) {
2877                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2878                 new_beacon->proberesp_ies = pos;
2879                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2880                 pos += beacon->proberesp_ies_len;
2881         }
2882         if (beacon->assocresp_ies_len) {
2883                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2884                 new_beacon->assocresp_ies = pos;
2885                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2886                 pos += beacon->assocresp_ies_len;
2887         }
2888         if (beacon->probe_resp_len) {
2889                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2890                 beacon->probe_resp = pos;
2891                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2892                 pos += beacon->probe_resp_len;
2893         }
2894
2895         return new_beacon;
2896 }
2897
2898 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2899 {
2900         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2901
2902         ieee80211_queue_work(&sdata->local->hw,
2903                              &sdata->csa_finalize_work);
2904 }
2905 EXPORT_SYMBOL(ieee80211_csa_finish);
2906
2907 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2908                                           u32 *changed)
2909 {
2910         int err;
2911
2912         switch (sdata->vif.type) {
2913         case NL80211_IFTYPE_AP:
2914                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2915                                               NULL);
2916                 kfree(sdata->u.ap.next_beacon);
2917                 sdata->u.ap.next_beacon = NULL;
2918
2919                 if (err < 0)
2920                         return err;
2921                 *changed |= err;
2922                 break;
2923         case NL80211_IFTYPE_ADHOC:
2924                 err = ieee80211_ibss_finish_csa(sdata);
2925                 if (err < 0)
2926                         return err;
2927                 *changed |= err;
2928                 break;
2929 #ifdef CONFIG_MAC80211_MESH
2930         case NL80211_IFTYPE_MESH_POINT:
2931                 err = ieee80211_mesh_finish_csa(sdata);
2932                 if (err < 0)
2933                         return err;
2934                 *changed |= err;
2935                 break;
2936 #endif
2937         default:
2938                 WARN_ON(1);
2939                 return -EINVAL;
2940         }
2941
2942         return 0;
2943 }
2944
2945 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2946 {
2947         struct ieee80211_local *local = sdata->local;
2948         u32 changed = 0;
2949         int err;
2950
2951         sdata_assert_lock(sdata);
2952         lockdep_assert_held(&local->mtx);
2953         lockdep_assert_held(&local->chanctx_mtx);
2954
2955         /*
2956          * using reservation isn't immediate as it may be deferred until later
2957          * with multi-vif. once reservation is complete it will re-schedule the
2958          * work with no reserved_chanctx so verify chandef to check if it
2959          * completed successfully
2960          */
2961
2962         if (sdata->reserved_chanctx) {
2963                 /*
2964                  * with multi-vif csa driver may call ieee80211_csa_finish()
2965                  * many times while waiting for other interfaces to use their
2966                  * reservations
2967                  */
2968                 if (sdata->reserved_ready)
2969                         return 0;
2970
2971                 return ieee80211_vif_use_reserved_context(sdata);
2972         }
2973
2974         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2975                                         &sdata->csa_chandef))
2976                 return -EINVAL;
2977
2978         sdata->vif.csa_active = false;
2979
2980         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2981         if (err)
2982                 return err;
2983
2984         ieee80211_bss_info_change_notify(sdata, changed);
2985
2986         if (sdata->csa_block_tx) {
2987                 ieee80211_wake_vif_queues(local, sdata,
2988                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2989                 sdata->csa_block_tx = false;
2990         }
2991
2992         err = drv_post_channel_switch(sdata);
2993         if (err)
2994                 return err;
2995
2996         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2997
2998         return 0;
2999 }
3000
3001 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3002 {
3003         if (__ieee80211_csa_finalize(sdata)) {
3004                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3005                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3006                                     GFP_KERNEL);
3007         }
3008 }
3009
3010 void ieee80211_csa_finalize_work(struct work_struct *work)
3011 {
3012         struct ieee80211_sub_if_data *sdata =
3013                 container_of(work, struct ieee80211_sub_if_data,
3014                              csa_finalize_work);
3015         struct ieee80211_local *local = sdata->local;
3016
3017         sdata_lock(sdata);
3018         mutex_lock(&local->mtx);
3019         mutex_lock(&local->chanctx_mtx);
3020
3021         /* AP might have been stopped while waiting for the lock. */
3022         if (!sdata->vif.csa_active)
3023                 goto unlock;
3024
3025         if (!ieee80211_sdata_running(sdata))
3026                 goto unlock;
3027
3028         ieee80211_csa_finalize(sdata);
3029
3030 unlock:
3031         mutex_unlock(&local->chanctx_mtx);
3032         mutex_unlock(&local->mtx);
3033         sdata_unlock(sdata);
3034 }
3035
3036 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3037                                     struct cfg80211_csa_settings *params,
3038                                     u32 *changed)
3039 {
3040         struct ieee80211_csa_settings csa = {};
3041         int err;
3042
3043         switch (sdata->vif.type) {
3044         case NL80211_IFTYPE_AP:
3045                 sdata->u.ap.next_beacon =
3046                         cfg80211_beacon_dup(&params->beacon_after);
3047                 if (!sdata->u.ap.next_beacon)
3048                         return -ENOMEM;
3049
3050                 /*
3051                  * With a count of 0, we don't have to wait for any
3052                  * TBTT before switching, so complete the CSA
3053                  * immediately.  In theory, with a count == 1 we
3054                  * should delay the switch until just before the next
3055                  * TBTT, but that would complicate things so we switch
3056                  * immediately too.  If we would delay the switch
3057                  * until the next TBTT, we would have to set the probe
3058                  * response here.
3059                  *
3060                  * TODO: A channel switch with count <= 1 without
3061                  * sending a CSA action frame is kind of useless,
3062                  * because the clients won't know we're changing
3063                  * channels.  The action frame must be implemented
3064                  * either here or in the userspace.
3065                  */
3066                 if (params->count <= 1)
3067                         break;
3068
3069                 if ((params->n_counter_offsets_beacon >
3070                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3071                     (params->n_counter_offsets_presp >
3072                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3073                         return -EINVAL;
3074
3075                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3076                 csa.counter_offsets_presp = params->counter_offsets_presp;
3077                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3078                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3079                 csa.count = params->count;
3080
3081                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3082                 if (err < 0) {
3083                         kfree(sdata->u.ap.next_beacon);
3084                         return err;
3085                 }
3086                 *changed |= err;
3087
3088                 break;
3089         case NL80211_IFTYPE_ADHOC:
3090                 if (!sdata->vif.bss_conf.ibss_joined)
3091                         return -EINVAL;
3092
3093                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3094                         return -EINVAL;
3095
3096                 switch (params->chandef.width) {
3097                 case NL80211_CHAN_WIDTH_40:
3098                         if (cfg80211_get_chandef_type(&params->chandef) !=
3099                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3100                                 return -EINVAL;
3101                 case NL80211_CHAN_WIDTH_5:
3102                 case NL80211_CHAN_WIDTH_10:
3103                 case NL80211_CHAN_WIDTH_20_NOHT:
3104                 case NL80211_CHAN_WIDTH_20:
3105                         break;
3106                 default:
3107                         return -EINVAL;
3108                 }
3109
3110                 /* changes into another band are not supported */
3111                 if (sdata->u.ibss.chandef.chan->band !=
3112                     params->chandef.chan->band)
3113                         return -EINVAL;
3114
3115                 /* see comments in the NL80211_IFTYPE_AP block */
3116                 if (params->count > 1) {
3117                         err = ieee80211_ibss_csa_beacon(sdata, params);
3118                         if (err < 0)
3119                                 return err;
3120                         *changed |= err;
3121                 }
3122
3123                 ieee80211_send_action_csa(sdata, params);
3124
3125                 break;
3126 #ifdef CONFIG_MAC80211_MESH
3127         case NL80211_IFTYPE_MESH_POINT: {
3128                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3129
3130                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3131                         return -EINVAL;
3132
3133                 /* changes into another band are not supported */
3134                 if (sdata->vif.bss_conf.chandef.chan->band !=
3135                     params->chandef.chan->band)
3136                         return -EINVAL;
3137
3138                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3139                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3140                         if (!ifmsh->pre_value)
3141                                 ifmsh->pre_value = 1;
3142                         else
3143                                 ifmsh->pre_value++;
3144                 }
3145
3146                 /* see comments in the NL80211_IFTYPE_AP block */
3147                 if (params->count > 1) {
3148                         err = ieee80211_mesh_csa_beacon(sdata, params);
3149                         if (err < 0) {
3150                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3151                                 return err;
3152                         }
3153                         *changed |= err;
3154                 }
3155
3156                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3157                         ieee80211_send_action_csa(sdata, params);
3158
3159                 break;
3160                 }
3161 #endif
3162         default:
3163                 return -EOPNOTSUPP;
3164         }
3165
3166         return 0;
3167 }
3168
3169 static int
3170 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3171                            struct cfg80211_csa_settings *params)
3172 {
3173         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3174         struct ieee80211_local *local = sdata->local;
3175         struct ieee80211_channel_switch ch_switch;
3176         struct ieee80211_chanctx_conf *conf;
3177         struct ieee80211_chanctx *chanctx;
3178         u32 changed = 0;
3179         int err;
3180
3181         sdata_assert_lock(sdata);
3182         lockdep_assert_held(&local->mtx);
3183
3184         if (!list_empty(&local->roc_list) || local->scanning)
3185                 return -EBUSY;
3186
3187         if (sdata->wdev.cac_started)
3188                 return -EBUSY;
3189
3190         if (cfg80211_chandef_identical(&params->chandef,
3191                                        &sdata->vif.bss_conf.chandef))
3192                 return -EINVAL;
3193
3194         /* don't allow another channel switch if one is already active. */
3195         if (sdata->vif.csa_active)
3196                 return -EBUSY;
3197
3198         mutex_lock(&local->chanctx_mtx);
3199         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3200                                          lockdep_is_held(&local->chanctx_mtx));
3201         if (!conf) {
3202                 err = -EBUSY;
3203                 goto out;
3204         }
3205
3206         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3207         if (!chanctx) {
3208                 err = -EBUSY;
3209                 goto out;
3210         }
3211
3212         ch_switch.timestamp = 0;
3213         ch_switch.device_timestamp = 0;
3214         ch_switch.block_tx = params->block_tx;
3215         ch_switch.chandef = params->chandef;
3216         ch_switch.count = params->count;
3217
3218         err = drv_pre_channel_switch(sdata, &ch_switch);
3219         if (err)
3220                 goto out;
3221
3222         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3223                                             chanctx->mode,
3224                                             params->radar_required);
3225         if (err)
3226                 goto out;
3227
3228         /* if reservation is invalid then this will fail */
3229         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3230         if (err) {
3231                 ieee80211_vif_unreserve_chanctx(sdata);
3232                 goto out;
3233         }
3234
3235         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3236         if (err) {
3237                 ieee80211_vif_unreserve_chanctx(sdata);
3238                 goto out;
3239         }
3240
3241         sdata->csa_chandef = params->chandef;
3242         sdata->csa_block_tx = params->block_tx;
3243         sdata->vif.csa_active = true;
3244
3245         if (sdata->csa_block_tx)
3246                 ieee80211_stop_vif_queues(local, sdata,
3247                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3248
3249         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3250                                           params->count);
3251
3252         if (changed) {
3253                 ieee80211_bss_info_change_notify(sdata, changed);
3254                 drv_channel_switch_beacon(sdata, &params->chandef);
3255         } else {
3256                 /* if the beacon didn't change, we can finalize immediately */
3257                 ieee80211_csa_finalize(sdata);
3258         }
3259
3260 out:
3261         mutex_unlock(&local->chanctx_mtx);
3262         return err;
3263 }
3264
3265 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3266                              struct cfg80211_csa_settings *params)
3267 {
3268         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3269         struct ieee80211_local *local = sdata->local;
3270         int err;
3271
3272         mutex_lock(&local->mtx);
3273         err = __ieee80211_channel_switch(wiphy, dev, params);
3274         mutex_unlock(&local->mtx);
3275
3276         return err;
3277 }
3278
3279 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3280                              struct cfg80211_mgmt_tx_params *params,
3281                              u64 *cookie)
3282 {
3283         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3284         struct ieee80211_local *local = sdata->local;
3285         struct sk_buff *skb;
3286         struct sta_info *sta;
3287         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3288         bool need_offchan = false;
3289         u32 flags;
3290         int ret;
3291         u8 *data;
3292
3293         if (params->dont_wait_for_ack)
3294                 flags = IEEE80211_TX_CTL_NO_ACK;
3295         else
3296                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3297                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3298
3299         if (params->no_cck)
3300                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3301
3302         switch (sdata->vif.type) {
3303         case NL80211_IFTYPE_ADHOC:
3304                 if (!sdata->vif.bss_conf.ibss_joined)
3305                         need_offchan = true;
3306                 /* fall through */
3307 #ifdef CONFIG_MAC80211_MESH
3308         case NL80211_IFTYPE_MESH_POINT:
3309                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3310                     !sdata->u.mesh.mesh_id_len)
3311                         need_offchan = true;
3312                 /* fall through */
3313 #endif
3314         case NL80211_IFTYPE_AP:
3315         case NL80211_IFTYPE_AP_VLAN:
3316         case NL80211_IFTYPE_P2P_GO:
3317                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3318                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3319                     !rcu_access_pointer(sdata->bss->beacon))
3320                         need_offchan = true;
3321                 if (!ieee80211_is_action(mgmt->frame_control) ||
3322                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3323                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3324                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3325                         break;
3326                 rcu_read_lock();
3327                 sta = sta_info_get(sdata, mgmt->da);
3328                 rcu_read_unlock();
3329                 if (!sta)
3330                         return -ENOLINK;
3331                 break;
3332         case NL80211_IFTYPE_STATION:
3333         case NL80211_IFTYPE_P2P_CLIENT:
3334                 if (!sdata->u.mgd.associated)
3335                         need_offchan = true;
3336                 break;
3337         case NL80211_IFTYPE_P2P_DEVICE:
3338                 need_offchan = true;
3339                 break;
3340         default:
3341                 return -EOPNOTSUPP;
3342         }
3343
3344         /* configurations requiring offchan cannot work if no channel has been
3345          * specified
3346          */
3347         if (need_offchan && !params->chan)
3348                 return -EINVAL;
3349
3350         mutex_lock(&local->mtx);
3351
3352         /* Check if the operating channel is the requested channel */
3353         if (!need_offchan) {
3354                 struct ieee80211_chanctx_conf *chanctx_conf;
3355
3356                 rcu_read_lock();
3357                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3358
3359                 if (chanctx_conf) {
3360                         need_offchan = params->chan &&
3361                                        (params->chan !=
3362                                         chanctx_conf->def.chan);
3363                 } else if (!params->chan) {
3364                         ret = -EINVAL;
3365                         rcu_read_unlock();
3366                         goto out_unlock;
3367                 } else {
3368                         need_offchan = true;
3369                 }
3370                 rcu_read_unlock();
3371         }
3372
3373         if (need_offchan && !params->offchan) {
3374                 ret = -EBUSY;
3375                 goto out_unlock;
3376         }
3377
3378         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3379         if (!skb) {
3380                 ret = -ENOMEM;
3381                 goto out_unlock;
3382         }
3383         skb_reserve(skb, local->hw.extra_tx_headroom);
3384
3385         data = skb_put(skb, params->len);
3386         memcpy(data, params->buf, params->len);
3387
3388         /* Update CSA counters */
3389         if (sdata->vif.csa_active &&
3390             (sdata->vif.type == NL80211_IFTYPE_AP ||
3391              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3392             params->n_csa_offsets) {
3393                 int i;
3394                 struct beacon_data *beacon = NULL;
3395
3396                 rcu_read_lock();
3397
3398                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3399                         beacon = rcu_dereference(sdata->u.ap.beacon);
3400                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3401                         beacon = rcu_dereference(sdata->u.ibss.presp);
3402                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3403                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3404
3405                 if (beacon)
3406                         for (i = 0; i < params->n_csa_offsets; i++)
3407                                 data[params->csa_offsets[i]] =
3408                                         beacon->csa_current_counter;
3409
3410                 rcu_read_unlock();
3411         }
3412
3413         IEEE80211_SKB_CB(skb)->flags = flags;
3414
3415         skb->dev = sdata->dev;
3416
3417         if (!need_offchan) {
3418                 *cookie = (unsigned long) skb;
3419                 ieee80211_tx_skb(sdata, skb);
3420                 ret = 0;
3421                 goto out_unlock;
3422         }
3423
3424         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3425                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3426         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3427                 IEEE80211_SKB_CB(skb)->hw_queue =
3428                         local->hw.offchannel_tx_hw_queue;
3429
3430         /* This will handle all kinds of coalescing and immediate TX */
3431         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3432                                        params->wait, cookie, skb,
3433                                        IEEE80211_ROC_TYPE_MGMT_TX);
3434         if (ret)
3435                 kfree_skb(skb);
3436  out_unlock:
3437         mutex_unlock(&local->mtx);
3438         return ret;
3439 }
3440
3441 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3442                                          struct wireless_dev *wdev,
3443                                          u64 cookie)
3444 {
3445         struct ieee80211_local *local = wiphy_priv(wiphy);
3446
3447         return ieee80211_cancel_roc(local, cookie, true);
3448 }
3449
3450 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3451                                           struct wireless_dev *wdev,
3452                                           u16 frame_type, bool reg)
3453 {
3454         struct ieee80211_local *local = wiphy_priv(wiphy);
3455
3456         switch (frame_type) {
3457         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3458                 if (reg)
3459                         local->probe_req_reg++;
3460                 else
3461                         local->probe_req_reg--;
3462
3463                 if (!local->open_count)
3464                         break;
3465
3466                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3467                 break;
3468         default:
3469                 break;
3470         }
3471 }
3472
3473 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3474 {
3475         struct ieee80211_local *local = wiphy_priv(wiphy);
3476
3477         if (local->started)
3478                 return -EOPNOTSUPP;
3479
3480         return drv_set_antenna(local, tx_ant, rx_ant);
3481 }
3482
3483 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3484 {
3485         struct ieee80211_local *local = wiphy_priv(wiphy);
3486
3487         return drv_get_antenna(local, tx_ant, rx_ant);
3488 }
3489
3490 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3491                                     struct net_device *dev,
3492                                     struct cfg80211_gtk_rekey_data *data)
3493 {
3494         struct ieee80211_local *local = wiphy_priv(wiphy);
3495         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3496
3497         if (!local->ops->set_rekey_data)
3498                 return -EOPNOTSUPP;
3499
3500         drv_set_rekey_data(local, sdata, data);
3501
3502         return 0;
3503 }
3504
3505 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3506                                   const u8 *peer, u64 *cookie)
3507 {
3508         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3509         struct ieee80211_local *local = sdata->local;
3510         struct ieee80211_qos_hdr *nullfunc;
3511         struct sk_buff *skb;
3512         int size = sizeof(*nullfunc);
3513         __le16 fc;
3514         bool qos;
3515         struct ieee80211_tx_info *info;
3516         struct sta_info *sta;
3517         struct ieee80211_chanctx_conf *chanctx_conf;
3518         enum ieee80211_band band;
3519
3520         rcu_read_lock();
3521         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3522         if (WARN_ON(!chanctx_conf)) {
3523                 rcu_read_unlock();
3524                 return -EINVAL;
3525         }
3526         band = chanctx_conf->def.chan->band;
3527         sta = sta_info_get_bss(sdata, peer);
3528         if (sta) {
3529                 qos = sta->sta.wme;
3530         } else {
3531                 rcu_read_unlock();
3532                 return -ENOLINK;
3533         }
3534
3535         if (qos) {
3536                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3537                                  IEEE80211_STYPE_QOS_NULLFUNC |
3538                                  IEEE80211_FCTL_FROMDS);
3539         } else {
3540                 size -= 2;
3541                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3542                                  IEEE80211_STYPE_NULLFUNC |
3543                                  IEEE80211_FCTL_FROMDS);
3544         }
3545
3546         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3547         if (!skb) {
3548                 rcu_read_unlock();
3549                 return -ENOMEM;
3550         }
3551
3552         skb->dev = dev;
3553
3554         skb_reserve(skb, local->hw.extra_tx_headroom);
3555
3556         nullfunc = (void *) skb_put(skb, size);
3557         nullfunc->frame_control = fc;
3558         nullfunc->duration_id = 0;
3559         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3560         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3561         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3562         nullfunc->seq_ctrl = 0;
3563
3564         info = IEEE80211_SKB_CB(skb);
3565
3566         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3567                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3568         info->band = band;
3569
3570         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3571         skb->priority = 7;
3572         if (qos)
3573                 nullfunc->qos_ctrl = cpu_to_le16(7);
3574
3575         local_bh_disable();
3576         ieee80211_xmit(sdata, skb);
3577         local_bh_enable();
3578         rcu_read_unlock();
3579
3580         *cookie = (unsigned long) skb;
3581         return 0;
3582 }
3583
3584 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3585                                      struct wireless_dev *wdev,
3586                                      struct cfg80211_chan_def *chandef)
3587 {
3588         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3589         struct ieee80211_local *local = wiphy_priv(wiphy);
3590         struct ieee80211_chanctx_conf *chanctx_conf;
3591         int ret = -ENODATA;
3592
3593         rcu_read_lock();
3594         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3595         if (chanctx_conf) {
3596                 *chandef = sdata->vif.bss_conf.chandef;
3597                 ret = 0;
3598         } else if (local->open_count > 0 &&
3599                    local->open_count == local->monitors &&
3600                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3601                 if (local->use_chanctx)
3602                         *chandef = local->monitor_chandef;
3603                 else
3604                         *chandef = local->_oper_chandef;
3605                 ret = 0;
3606         }
3607         rcu_read_unlock();
3608
3609         return ret;
3610 }
3611
3612 #ifdef CONFIG_PM
3613 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3614 {
3615         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3616 }
3617 #endif
3618
3619 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3620                                  struct net_device *dev,
3621                                  struct cfg80211_qos_map *qos_map)
3622 {
3623         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3624         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3625
3626         if (qos_map) {
3627                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3628                 if (!new_qos_map)
3629                         return -ENOMEM;
3630                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3631         } else {
3632                 /* A NULL qos_map was passed to disable QoS mapping */
3633                 new_qos_map = NULL;
3634         }
3635
3636         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3637         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3638         if (old_qos_map)
3639                 kfree_rcu(old_qos_map, rcu_head);
3640
3641         return 0;
3642 }
3643
3644 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3645                                       struct net_device *dev,
3646                                       struct cfg80211_chan_def *chandef)
3647 {
3648         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3649         int ret;
3650         u32 changed = 0;
3651
3652         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3653         if (ret == 0)
3654                 ieee80211_bss_info_change_notify(sdata, changed);
3655
3656         return ret;
3657 }
3658
3659 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3660                                u8 tsid, const u8 *peer, u8 up,
3661                                u16 admitted_time)
3662 {
3663         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3664         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3665         int ac = ieee802_1d_to_ac[up];
3666
3667         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3668                 return -EOPNOTSUPP;
3669
3670         if (!(sdata->wmm_acm & BIT(up)))
3671                 return -EINVAL;
3672
3673         if (ifmgd->tx_tspec[ac].admitted_time)
3674                 return -EBUSY;
3675
3676         if (admitted_time) {
3677                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3678                 ifmgd->tx_tspec[ac].tsid = tsid;
3679                 ifmgd->tx_tspec[ac].up = up;
3680         }
3681
3682         return 0;
3683 }
3684
3685 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3686                                u8 tsid, const u8 *peer)
3687 {
3688         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3689         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3690         struct ieee80211_local *local = wiphy_priv(wiphy);
3691         int ac;
3692
3693         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3694                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3695
3696                 /* skip unused entries */
3697                 if (!tx_tspec->admitted_time)
3698                         continue;
3699
3700                 if (tx_tspec->tsid != tsid)
3701                         continue;
3702
3703                 /* due to this new packets will be reassigned to non-ACM ACs */
3704                 tx_tspec->up = -1;
3705
3706                 /* Make sure that all packets have been sent to avoid to
3707                  * restore the QoS params on packets that are still on the
3708                  * queues.
3709                  */
3710                 synchronize_net();
3711                 ieee80211_flush_queues(local, sdata, false);
3712
3713                 /* restore the normal QoS parameters
3714                  * (unconditionally to avoid races)
3715                  */
3716                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3717                 tx_tspec->downgraded = false;
3718                 ieee80211_sta_handle_tspec_ac_params(sdata);
3719
3720                 /* finally clear all the data */
3721                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3722
3723                 return 0;
3724         }
3725
3726         return -ENOENT;
3727 }
3728
3729 const struct cfg80211_ops mac80211_config_ops = {
3730         .add_virtual_intf = ieee80211_add_iface,
3731         .del_virtual_intf = ieee80211_del_iface,
3732         .change_virtual_intf = ieee80211_change_iface,
3733         .start_p2p_device = ieee80211_start_p2p_device,
3734         .stop_p2p_device = ieee80211_stop_p2p_device,
3735         .add_key = ieee80211_add_key,
3736         .del_key = ieee80211_del_key,
3737         .get_key = ieee80211_get_key,
3738         .set_default_key = ieee80211_config_default_key,
3739         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3740         .start_ap = ieee80211_start_ap,
3741         .change_beacon = ieee80211_change_beacon,
3742         .stop_ap = ieee80211_stop_ap,
3743         .add_station = ieee80211_add_station,
3744         .del_station = ieee80211_del_station,
3745         .change_station = ieee80211_change_station,
3746         .get_station = ieee80211_get_station,
3747         .dump_station = ieee80211_dump_station,
3748         .dump_survey = ieee80211_dump_survey,
3749 #ifdef CONFIG_MAC80211_MESH
3750         .add_mpath = ieee80211_add_mpath,
3751         .del_mpath = ieee80211_del_mpath,
3752         .change_mpath = ieee80211_change_mpath,
3753         .get_mpath = ieee80211_get_mpath,
3754         .dump_mpath = ieee80211_dump_mpath,
3755         .get_mpp = ieee80211_get_mpp,
3756         .dump_mpp = ieee80211_dump_mpp,
3757         .update_mesh_config = ieee80211_update_mesh_config,
3758         .get_mesh_config = ieee80211_get_mesh_config,
3759         .join_mesh = ieee80211_join_mesh,
3760         .leave_mesh = ieee80211_leave_mesh,
3761 #endif
3762         .join_ocb = ieee80211_join_ocb,
3763         .leave_ocb = ieee80211_leave_ocb,
3764         .change_bss = ieee80211_change_bss,
3765         .set_txq_params = ieee80211_set_txq_params,
3766         .set_monitor_channel = ieee80211_set_monitor_channel,
3767         .suspend = ieee80211_suspend,
3768         .resume = ieee80211_resume,
3769         .scan = ieee80211_scan,
3770         .sched_scan_start = ieee80211_sched_scan_start,
3771         .sched_scan_stop = ieee80211_sched_scan_stop,
3772         .auth = ieee80211_auth,
3773         .assoc = ieee80211_assoc,
3774         .deauth = ieee80211_deauth,
3775         .disassoc = ieee80211_disassoc,
3776         .join_ibss = ieee80211_join_ibss,
3777         .leave_ibss = ieee80211_leave_ibss,
3778         .set_mcast_rate = ieee80211_set_mcast_rate,
3779         .set_wiphy_params = ieee80211_set_wiphy_params,
3780         .set_tx_power = ieee80211_set_tx_power,
3781         .get_tx_power = ieee80211_get_tx_power,
3782         .set_wds_peer = ieee80211_set_wds_peer,
3783         .rfkill_poll = ieee80211_rfkill_poll,
3784         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3785         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3786         .set_power_mgmt = ieee80211_set_power_mgmt,
3787         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3788         .remain_on_channel = ieee80211_remain_on_channel,
3789         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3790         .mgmt_tx = ieee80211_mgmt_tx,
3791         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3792         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3793         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3794         .set_antenna = ieee80211_set_antenna,
3795         .get_antenna = ieee80211_get_antenna,
3796         .set_rekey_data = ieee80211_set_rekey_data,
3797         .tdls_oper = ieee80211_tdls_oper,
3798         .tdls_mgmt = ieee80211_tdls_mgmt,
3799         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3800         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3801         .probe_client = ieee80211_probe_client,
3802         .set_noack_map = ieee80211_set_noack_map,
3803 #ifdef CONFIG_PM
3804         .set_wakeup = ieee80211_set_wakeup,
3805 #endif
3806         .get_channel = ieee80211_cfg_get_channel,
3807         .start_radar_detection = ieee80211_start_radar_detection,
3808         .channel_switch = ieee80211_channel_switch,
3809         .set_qos_map = ieee80211_set_qos_map,
3810         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3811         .add_tx_ts = ieee80211_add_tx_ts,
3812         .del_tx_ts = ieee80211_del_tx_ts,
3813 };