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_AES_CMAC:
 166         case WLAN_CIPHER_SUITE_GCMP:
 167                 break;
 168         default:
 169                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 170                 break;
 171         }
 172
 173         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 174                                   params->key, params->seq_len, params->seq,
 175                                   cs);
 176         if (IS_ERR(key))
 177                 return PTR_ERR(key);
 178
 179         if (pairwise)
 180                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 181
 182         mutex_lock(&local->sta_mtx);
 183
 184         if (mac_addr) {
 185                 if (ieee80211_vif_is_mesh(&sdata->vif))
 186                         sta = sta_info_get(sdata, mac_addr);
 187                 else
 188                         sta = sta_info_get_bss(sdata, mac_addr);
 189                 /*
 190                  * The ASSOC test makes sure the driver is ready to
 191                  * receive the key. When wpa_supplicant has roamed
 192                  * using FT, it attempts to set the key before
 193                  * association has completed, this rejects that attempt
 194                  * so it will set the key again after association.
 195                  *
 196                  * TODO: accept the key if we have a station entry and
 197                  *       add it to the device after the station.
 198                  */
 199                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 200                         ieee80211_key_free_unused(key);
 201                         err = -ENOENT;
 202                         goto out_unlock;
 203                 }
 204         }
 205
 206         switch (sdata->vif.type) {
 207         case NL80211_IFTYPE_STATION:
 208                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 209                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 210                 break;
 211         case NL80211_IFTYPE_AP:
 212         case NL80211_IFTYPE_AP_VLAN:
 213                 /* Keys without a station are used for TX only */
 214                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 215                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 216                 break;
 217         case NL80211_IFTYPE_ADHOC:
 218                 /* no MFP (yet) */
 219                 break;
 220         case NL80211_IFTYPE_MESH_POINT:
 221 #ifdef CONFIG_MAC80211_MESH
 222                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 223                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 224                 break;
 225 #endif
 226         case NL80211_IFTYPE_WDS:
 227         case NL80211_IFTYPE_MONITOR:
 228         case NL80211_IFTYPE_P2P_DEVICE:
 229         case NL80211_IFTYPE_UNSPECIFIED:
 230         case NUM_NL80211_IFTYPES:
 231         case NL80211_IFTYPE_P2P_CLIENT:
 232         case NL80211_IFTYPE_P2P_GO:
 233                 /* shouldn't happen */
 234                 WARN_ON_ONCE(1);
 235                 break;
 236         }
 237
 238         if (sta)
 239                 sta->cipher_scheme = cs;
 240
 241         err = ieee80211_key_link(key, sdata, sta);
 242
 243  out_unlock:
 244         mutex_unlock(&local->sta_mtx);
 245
 246         return err;
 247 }
 248
 249 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 250                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 251 {
 252         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 253         struct ieee80211_local *local = sdata->local;
 254         struct sta_info *sta;
 255         struct ieee80211_key *key = NULL;
 256         int ret;
 257
 258         mutex_lock(&local->sta_mtx);
 259         mutex_lock(&local->key_mtx);
 260
 261         if (mac_addr) {
 262                 ret = -ENOENT;
 263
 264                 sta = sta_info_get_bss(sdata, mac_addr);
 265                 if (!sta)
 266                         goto out_unlock;
 267
 268                 if (pairwise)
 269                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 270                 else
 271                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 272         } else
 273                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 274
 275         if (!key) {
 276                 ret = -ENOENT;
 277                 goto out_unlock;
 278         }
 279
 280         ieee80211_key_free(key, true);
 281
 282         ret = 0;
 283  out_unlock:
 284         mutex_unlock(&local->key_mtx);
 285         mutex_unlock(&local->sta_mtx);
 286
 287         return ret;
 288 }
 289
 290 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 291                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 292                              void *cookie,
 293                              void (*callback)(void *cookie,
 294                                               struct key_params *params))
 295 {
 296         struct ieee80211_sub_if_data *sdata;
 297         struct sta_info *sta = NULL;
 298         u8 seq[6] = {0};
 299         struct key_params params;
 300         struct ieee80211_key *key = NULL;
 301         u64 pn64;
 302         u32 iv32;
 303         u16 iv16;
 304         int err = -ENOENT;
 305
 306         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 307
 308         rcu_read_lock();
 309
 310         if (mac_addr) {
 311                 sta = sta_info_get_bss(sdata, mac_addr);
 312                 if (!sta)
 313                         goto out;
 314
 315                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 316                         key = rcu_dereference(sta->ptk[key_idx]);
 317                 else if (!pairwise &&
 318                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 319                         key = rcu_dereference(sta->gtk[key_idx]);
 320         } else
 321                 key = rcu_dereference(sdata->keys[key_idx]);
 322
 323         if (!key)
 324                 goto out;
 325
 326         memset(&params, 0, sizeof(params));
 327
 328         params.cipher = key->conf.cipher;
 329
 330         switch (key->conf.cipher) {
 331         case WLAN_CIPHER_SUITE_TKIP:
 332                 iv32 = key->u.tkip.tx.iv32;
 333                 iv16 = key->u.tkip.tx.iv16;
 334
 335                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 336                         drv_get_tkip_seq(sdata->local,
 337                                          key->conf.hw_key_idx,
 338                                          &iv32, &iv16);
 339
 340                 seq[0] = iv16 & 0xff;
 341                 seq[1] = (iv16 >> 8) & 0xff;
 342                 seq[2] = iv32 & 0xff;
 343                 seq[3] = (iv32 >> 8) & 0xff;
 344                 seq[4] = (iv32 >> 16) & 0xff;
 345                 seq[5] = (iv32 >> 24) & 0xff;
 346                 params.seq = seq;
 347                 params.seq_len = 6;
 348                 break;
 349         case WLAN_CIPHER_SUITE_CCMP:
 350                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 351                 seq[0] = pn64;
 352                 seq[1] = pn64 >> 8;
 353                 seq[2] = pn64 >> 16;
 354                 seq[3] = pn64 >> 24;
 355                 seq[4] = pn64 >> 32;
 356                 seq[5] = pn64 >> 40;
 357                 params.seq = seq;
 358                 params.seq_len = 6;
 359                 break;
 360         case WLAN_CIPHER_SUITE_AES_CMAC:
 361                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 362                 seq[0] = pn64;
 363                 seq[1] = pn64 >> 8;
 364                 seq[2] = pn64 >> 16;
 365                 seq[3] = pn64 >> 24;
 366                 seq[4] = pn64 >> 32;
 367                 seq[5] = pn64 >> 40;
 368                 params.seq = seq;
 369                 params.seq_len = 6;
 370                 break;
 371         }
 372
 373         params.key = key->conf.key;
 374         params.key_len = key->conf.keylen;
 375
 376         callback(cookie, &params);
 377         err = 0;
 378
 379  out:
 380         rcu_read_unlock();
 381         return err;
 382 }
 383
 384 static int ieee80211_config_default_key(struct wiphy *wiphy,
 385                                         struct net_device *dev,
 386                                         u8 key_idx, bool uni,
 387                                         bool multi)
 388 {
 389         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 390
 391         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 392
 393         return 0;
 394 }
 395
 396 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 397                                              struct net_device *dev,
 398                                              u8 key_idx)
 399 {
 400         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 401
 402         ieee80211_set_default_mgmt_key(sdata, key_idx);
 403
 404         return 0;
 405 }
 406
 407 void sta_set_rate_info_tx(struct sta_info *sta,
 408                           const struct ieee80211_tx_rate *rate,
 409                           struct rate_info *rinfo)
 410 {
 411         rinfo->flags = 0;
 412         if (rate->flags & IEEE80211_TX_RC_MCS) {
 413                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 414                 rinfo->mcs = rate->idx;
 415         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 416                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 417                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 418                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 419         } else {
 420                 struct ieee80211_supported_band *sband;
 421                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 422                 u16 brate;
 423
 424                 sband = sta->local->hw.wiphy->bands[
 425                                 ieee80211_get_sdata_band(sta->sdata)];
 426                 brate = sband->bitrates[rate->idx].bitrate;
 427                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 428         }
 429         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 430                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 431         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 432                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 433         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 434                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 435         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 436                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 437 }
 438
 439 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 440 {
 441         rinfo->flags = 0;
 442
 443         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 444                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 445                 rinfo->mcs = sta->last_rx_rate_idx;
 446         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 447                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 448                 rinfo->nss = sta->last_rx_rate_vht_nss;
 449                 rinfo->mcs = sta->last_rx_rate_idx;
 450         } else {
 451                 struct ieee80211_supported_band *sband;
 452                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 453                 u16 brate;
 454
 455                 sband = sta->local->hw.wiphy->bands[
 456                                 ieee80211_get_sdata_band(sta->sdata)];
 457                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 458                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 459         }
 460
 461         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 462                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 463         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 464                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 465         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 466                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 467         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ)
 468                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 469         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 470                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 471 }
 472
 473 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 474                                   int idx, u8 *mac, struct station_info *sinfo)
 475 {
 476         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 477         struct ieee80211_local *local = sdata->local;
 478         struct sta_info *sta;
 479         int ret = -ENOENT;
 480
 481         mutex_lock(&local->sta_mtx);
 482
 483         sta = sta_info_get_by_idx(sdata, idx);
 484         if (sta) {
 485                 ret = 0;
 486                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 487                 sta_set_sinfo(sta, sinfo);
 488         }
 489
 490         mutex_unlock(&local->sta_mtx);
 491
 492         return ret;
 493 }
 494
 495 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 496                                  int idx, struct survey_info *survey)
 497 {
 498         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 499
 500         return drv_get_survey(local, idx, survey);
 501 }
 502
 503 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 504                                  const u8 *mac, struct station_info *sinfo)
 505 {
 506         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 507         struct ieee80211_local *local = sdata->local;
 508         struct sta_info *sta;
 509         int ret = -ENOENT;
 510
 511         mutex_lock(&local->sta_mtx);
 512
 513         sta = sta_info_get_bss(sdata, mac);
 514         if (sta) {
 515                 ret = 0;
 516                 sta_set_sinfo(sta, sinfo);
 517         }
 518
 519         mutex_unlock(&local->sta_mtx);
 520
 521         return ret;
 522 }
 523
 524 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 525                                          struct cfg80211_chan_def *chandef)
 526 {
 527         struct ieee80211_local *local = wiphy_priv(wiphy);
 528         struct ieee80211_sub_if_data *sdata;
 529         int ret = 0;
 530
 531         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 532                 return 0;
 533
 534         mutex_lock(&local->mtx);
 535         mutex_lock(&local->iflist_mtx);
 536         if (local->use_chanctx) {
 537                 sdata = rcu_dereference_protected(
 538                                 local->monitor_sdata,
 539                                 lockdep_is_held(&local->iflist_mtx));
 540                 if (sdata) {
 541                         ieee80211_vif_release_channel(sdata);
 542                         ret = ieee80211_vif_use_channel(sdata, chandef,
 543                                         IEEE80211_CHANCTX_EXCLUSIVE);
 544                 }
 545         } else if (local->open_count == local->monitors) {
 546                 local->_oper_chandef = *chandef;
 547                 ieee80211_hw_config(local, 0);
 548         }
 549
 550         if (ret == 0)
 551                 local->monitor_chandef = *chandef;
 552         mutex_unlock(&local->iflist_mtx);
 553         mutex_unlock(&local->mtx);
 554
 555         return ret;
 556 }
 557
 558 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 559                                     const u8 *resp, size_t resp_len,
 560                                     const struct ieee80211_csa_settings *csa)
 561 {
 562         struct probe_resp *new, *old;
 563
 564         if (!resp || !resp_len)
 565                 return 1;
 566
 567         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 568
 569         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 570         if (!new)
 571                 return -ENOMEM;
 572
 573         new->len = resp_len;
 574         memcpy(new->data, resp, resp_len);
 575
 576         if (csa)
 577                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 578                        csa->n_counter_offsets_presp *
 579                        sizeof(new->csa_counter_offsets[0]));
 580
 581         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 582         if (old)
 583                 kfree_rcu(old, rcu_head);
 584
 585         return 0;
 586 }
 587
 588 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 589                                    struct cfg80211_beacon_data *params,
 590                                    const struct ieee80211_csa_settings *csa)
 591 {
 592         struct beacon_data *new, *old;
 593         int new_head_len, new_tail_len;
 594         int size, err;
 595         u32 changed = BSS_CHANGED_BEACON;
 596
 597         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 598
 599
 600         /* Need to have a beacon head if we don't have one yet */
 601         if (!params->head && !old)
 602                 return -EINVAL;
 603
 604         /* new or old head? */
 605         if (params->head)
 606                 new_head_len = params->head_len;
 607         else
 608                 new_head_len = old->head_len;
 609
 610         /* new or old tail? */
 611         if (params->tail || !old)
 612                 /* params->tail_len will be zero for !params->tail */
 613                 new_tail_len = params->tail_len;
 614         else
 615                 new_tail_len = old->tail_len;
 616
 617         size = sizeof(*new) + new_head_len + new_tail_len;
 618
 619         new = kzalloc(size, GFP_KERNEL);
 620         if (!new)
 621                 return -ENOMEM;
 622
 623         /* start filling the new info now */
 624
 625         /*
 626          * pointers go into the block we allocated,
 627          * memory is | beacon_data | head | tail |
 628          */
 629         new->head = ((u8 *) new) + sizeof(*new);
 630         new->tail = new->head + new_head_len;
 631         new->head_len = new_head_len;
 632         new->tail_len = new_tail_len;
 633
 634         if (csa) {
 635                 new->csa_current_counter = csa->count;
 636                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 637                        csa->n_counter_offsets_beacon *
 638                        sizeof(new->csa_counter_offsets[0]));
 639         }
 640
 641         /* copy in head */
 642         if (params->head)
 643                 memcpy(new->head, params->head, new_head_len);
 644         else
 645                 memcpy(new->head, old->head, new_head_len);
 646
 647         /* copy in optional tail */
 648         if (params->tail)
 649                 memcpy(new->tail, params->tail, new_tail_len);
 650         else
 651                 if (old)
 652                         memcpy(new->tail, old->tail, new_tail_len);
 653
 654         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 655                                        params->probe_resp_len, csa);
 656         if (err < 0)
 657                 return err;
 658         if (err == 0)
 659                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 660
 661         rcu_assign_pointer(sdata->u.ap.beacon, new);
 662
 663         if (old)
 664                 kfree_rcu(old, rcu_head);
 665
 666         return changed;
 667 }
 668
 669 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 670                               struct cfg80211_ap_settings *params)
 671 {
 672         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 673         struct ieee80211_local *local = sdata->local;
 674         struct beacon_data *old;
 675         struct ieee80211_sub_if_data *vlan;
 676         u32 changed = BSS_CHANGED_BEACON_INT |
 677                       BSS_CHANGED_BEACON_ENABLED |
 678                       BSS_CHANGED_BEACON |
 679                       BSS_CHANGED_SSID |
 680                       BSS_CHANGED_P2P_PS;
 681         int err;
 682
 683         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 684         if (old)
 685                 return -EALREADY;
 686
 687         switch (params->smps_mode) {
 688         case NL80211_SMPS_OFF:
 689                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 690                 break;
 691         case NL80211_SMPS_STATIC:
 692                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 693                 break;
 694         case NL80211_SMPS_DYNAMIC:
 695                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 696                 break;
 697         default:
 698                 return -EINVAL;
 699         }
 700         sdata->needed_rx_chains = sdata->local->rx_chains;
 701
 702         mutex_lock(&local->mtx);
 703         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 704                                         IEEE80211_CHANCTX_SHARED);
 705         if (!err)
 706                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 707         mutex_unlock(&local->mtx);
 708         if (err)
 709                 return err;
 710
 711         /*
 712          * Apply control port protocol, this allows us to
 713          * not encrypt dynamic WEP control frames.
 714          */
 715         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 716         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 717         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 718                                                         &params->crypto,
 719                                                         sdata->vif.type);
 720
 721         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 722                 vlan->control_port_protocol =
 723                         params->crypto.control_port_ethertype;
 724                 vlan->control_port_no_encrypt =
 725                         params->crypto.control_port_no_encrypt;
 726                 vlan->encrypt_headroom =
 727                         ieee80211_cs_headroom(sdata->local,
 728                                               &params->crypto,
 729                                               vlan->vif.type);
 730         }
 731
 732         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 733         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 734         sdata->vif.bss_conf.enable_beacon = true;
 735
 736         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 737         if (params->ssid_len)
 738                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 739                        params->ssid_len);
 740         sdata->vif.bss_conf.hidden_ssid =
 741                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 742
 743         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 744                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 745         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 746                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 747         if (params->p2p_opp_ps)
 748                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 749                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 750
 751         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 752         if (err < 0) {
 753                 ieee80211_vif_release_channel(sdata);
 754                 return err;
 755         }
 756         changed |= err;
 757
 758         err = drv_start_ap(sdata->local, sdata);
 759         if (err) {
 760                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 761
 762                 if (old)
 763                         kfree_rcu(old, rcu_head);
 764                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 765                 ieee80211_vif_release_channel(sdata);
 766                 return err;
 767         }
 768
 769         ieee80211_recalc_dtim(local, sdata);
 770         ieee80211_bss_info_change_notify(sdata, changed);
 771
 772         netif_carrier_on(dev);
 773         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 774                 netif_carrier_on(vlan->dev);
 775
 776         return 0;
 777 }
 778
 779 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 780                                    struct cfg80211_beacon_data *params)
 781 {
 782         struct ieee80211_sub_if_data *sdata;
 783         struct beacon_data *old;
 784         int err;
 785
 786         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 787         sdata_assert_lock(sdata);
 788
 789         /* don't allow changing the beacon while CSA is in place - offset
 790          * of channel switch counter may change
 791          */
 792         if (sdata->vif.csa_active)
 793                 return -EBUSY;
 794
 795         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 796         if (!old)
 797                 return -ENOENT;
 798
 799         err = ieee80211_assign_beacon(sdata, params, NULL);
 800         if (err < 0)
 801                 return err;
 802         ieee80211_bss_info_change_notify(sdata, err);
 803         return 0;
 804 }
 805
 806 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 807 {
 808         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 809         struct ieee80211_sub_if_data *vlan;
 810         struct ieee80211_local *local = sdata->local;
 811         struct beacon_data *old_beacon;
 812         struct probe_resp *old_probe_resp;
 813         struct cfg80211_chan_def chandef;
 814
 815         sdata_assert_lock(sdata);
 816
 817         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 818         if (!old_beacon)
 819                 return -ENOENT;
 820         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 821
 822         /* abort any running channel switch */
 823         mutex_lock(&local->mtx);
 824         sdata->vif.csa_active = false;
 825         if (sdata->csa_block_tx) {
 826                 ieee80211_wake_vif_queues(local, sdata,
 827                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 828                 sdata->csa_block_tx = false;
 829         }
 830
 831         mutex_unlock(&local->mtx);
 832
 833         kfree(sdata->u.ap.next_beacon);
 834         sdata->u.ap.next_beacon = NULL;
 835
 836         /* turn off carrier for this interface and dependent VLANs */
 837         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 838                 netif_carrier_off(vlan->dev);
 839         netif_carrier_off(dev);
 840
 841         /* remove beacon and probe response */
 842         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 843         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 844         kfree_rcu(old_beacon, rcu_head);
 845         if (old_probe_resp)
 846                 kfree_rcu(old_probe_resp, rcu_head);
 847         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 848
 849         __sta_info_flush(sdata, true);
 850         ieee80211_free_keys(sdata, true);
 851
 852         sdata->vif.bss_conf.enable_beacon = false;
 853         sdata->vif.bss_conf.ssid_len = 0;
 854         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 855         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 856
 857         if (sdata->wdev.cac_started) {
 858                 chandef = sdata->vif.bss_conf.chandef;
 859                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 860                 cfg80211_cac_event(sdata->dev, &chandef,
 861                                    NL80211_RADAR_CAC_ABORTED,
 862                                    GFP_KERNEL);
 863         }
 864
 865         drv_stop_ap(sdata->local, sdata);
 866
 867         /* free all potentially still buffered bcast frames */
 868         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 869         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 870
 871         mutex_lock(&local->mtx);
 872         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 873         ieee80211_vif_release_channel(sdata);
 874         mutex_unlock(&local->mtx);
 875
 876         return 0;
 877 }
 878
 879 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 880 struct iapp_layer2_update {
 881         u8 da[ETH_ALEN];        /* broadcast */
 882         u8 sa[ETH_ALEN];        /* STA addr */
 883         __be16 len;             /* 6 */
 884         u8 dsap;                /* 0 */
 885         u8 ssap;                /* 0 */
 886         u8 control;
 887         u8 xid_info[3];
 888 } __packed;
 889
 890 static void ieee80211_send_layer2_update(struct sta_info *sta)
 891 {
 892         struct iapp_layer2_update *msg;
 893         struct sk_buff *skb;
 894
 895         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 896          * bridge devices */
 897
 898         skb = dev_alloc_skb(sizeof(*msg));
 899         if (!skb)
 900                 return;
 901         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 902
 903         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 904          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 905
 906         eth_broadcast_addr(msg->da);
 907         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 908         msg->len = htons(6);
 909         msg->dsap = 0;
 910         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 911         msg->control = 0xaf;    /* XID response lsb.1111F101.
 912                                  * F=0 (no poll command; unsolicited frame) */
 913         msg->xid_info[0] = 0x81;        /* XID format identifier */
 914         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 915         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 916
 917         skb->dev = sta->sdata->dev;
 918         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 919         memset(skb->cb, 0, sizeof(skb->cb));
 920         netif_rx_ni(skb);
 921 }
 922
 923 static int sta_apply_auth_flags(struct ieee80211_local *local,
 924                                 struct sta_info *sta,
 925                                 u32 mask, u32 set)
 926 {
 927         int ret;
 928
 929         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 930             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 931             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 932                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 933                 if (ret)
 934                         return ret;
 935         }
 936
 937         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 938             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 939             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 940                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 941                 if (ret)
 942                         return ret;
 943         }
 944
 945         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 946                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 947                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 948                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 949                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 950                 else
 951                         ret = 0;
 952                 if (ret)
 953                         return ret;
 954         }
 955
 956         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 957             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
 958             test_sta_flag(sta, WLAN_STA_ASSOC)) {
 959                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 960                 if (ret)
 961                         return ret;
 962         }
 963
 964         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 965             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 966             test_sta_flag(sta, WLAN_STA_AUTH)) {
 967                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 968                 if (ret)
 969                         return ret;
 970         }
 971
 972         return 0;
 973 }
 974
 975 static int sta_apply_parameters(struct ieee80211_local *local,
 976                                 struct sta_info *sta,
 977                                 struct station_parameters *params)
 978 {
 979         int ret = 0;
 980         struct ieee80211_supported_band *sband;
 981         struct ieee80211_sub_if_data *sdata = sta->sdata;
 982         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
 983         u32 mask, set;
 984
 985         sband = local->hw.wiphy->bands[band];
 986
 987         mask = params->sta_flags_mask;
 988         set = params->sta_flags_set;
 989
 990         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 991                 /*
 992                  * In mesh mode, ASSOCIATED isn't part of the nl80211
 993                  * API but must follow AUTHENTICATED for driver state.
 994                  */
 995                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 996                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 997                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 998                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 999         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1000                 /*
1001                  * TDLS -- everything follows authorized, but
1002                  * only becoming authorized is possible, not
1003                  * going back
1004                  */
1005                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1006                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1007                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1008                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1009                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1010                 }
1011         }
1012
1013         /* auth flags will be set later for TDLS stations */
1014         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1015                 ret = sta_apply_auth_flags(local, sta, mask, set);
1016                 if (ret)
1017                         return ret;
1018         }
1019
1020         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1021                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1022                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1023                 else
1024                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1025         }
1026
1027         if (mask & BIT(NL80211_STA_FLAG_WME))
1028                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1029
1030         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1031                 if (set & BIT(NL80211_STA_FLAG_MFP))
1032                         set_sta_flag(sta, WLAN_STA_MFP);
1033                 else
1034                         clear_sta_flag(sta, WLAN_STA_MFP);
1035         }
1036
1037         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1038                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1039                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1040                 else
1041                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1042         }
1043
1044         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1045                 sta->sta.uapsd_queues = params->uapsd_queues;
1046                 sta->sta.max_sp = params->max_sp;
1047         }
1048
1049         /*
1050          * cfg80211 validates this (1-2007) and allows setting the AID
1051          * only when creating a new station entry
1052          */
1053         if (params->aid)
1054                 sta->sta.aid = params->aid;
1055
1056         /*
1057          * Some of the following updates would be racy if called on an
1058          * existing station, via ieee80211_change_station(). However,
1059          * all such changes are rejected by cfg80211 except for updates
1060          * changing the supported rates on an existing but not yet used
1061          * TDLS peer.
1062          */
1063
1064         if (params->listen_interval >= 0)
1065                 sta->listen_interval = params->listen_interval;
1066
1067         if (params->supported_rates) {
1068                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1069                                          sband, params->supported_rates,
1070                                          params->supported_rates_len,
1071                                          &sta->sta.supp_rates[band]);
1072         }
1073
1074         if (params->ht_capa)
1075                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1076                                                   params->ht_capa, sta);
1077
1078         if (params->vht_capa)
1079                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1080                                                     params->vht_capa, sta);
1081
1082         if (params->opmode_notif_used) {
1083                 /* returned value is only needed for rc update, but the
1084                  * rc isn't initialized here yet, so ignore it
1085                  */
1086                 __ieee80211_vht_handle_opmode(sdata, sta,
1087                                               params->opmode_notif,
1088                                               band, false);
1089         }
1090
1091         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1092 #ifdef CONFIG_MAC80211_MESH
1093                 u32 changed = 0;
1094
1095                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1096                         switch (params->plink_state) {
1097                         case NL80211_PLINK_ESTAB:
1098                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1099                                         changed = mesh_plink_inc_estab_count(
1100                                                         sdata);
1101                                 sta->plink_state = params->plink_state;
1102
1103                                 ieee80211_mps_sta_status_update(sta);
1104                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1105                                               sdata->u.mesh.mshcfg.power_mode);
1106                                 break;
1107                         case NL80211_PLINK_LISTEN:
1108                         case NL80211_PLINK_BLOCKED:
1109                         case NL80211_PLINK_OPN_SNT:
1110                         case NL80211_PLINK_OPN_RCVD:
1111                         case NL80211_PLINK_CNF_RCVD:
1112                         case NL80211_PLINK_HOLDING:
1113                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1114                                         changed = mesh_plink_dec_estab_count(
1115                                                         sdata);
1116                                 sta->plink_state = params->plink_state;
1117
1118                                 ieee80211_mps_sta_status_update(sta);
1119                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1120                                                 NL80211_MESH_POWER_UNKNOWN);
1121                                 break;
1122                         default:
1123                                 /*  nothing  */
1124                                 break;
1125                         }
1126                 }
1127
1128                 switch (params->plink_action) {
1129                 case NL80211_PLINK_ACTION_NO_ACTION:
1130                         /* nothing */
1131                         break;
1132                 case NL80211_PLINK_ACTION_OPEN:
1133                         changed |= mesh_plink_open(sta);
1134                         break;
1135                 case NL80211_PLINK_ACTION_BLOCK:
1136                         changed |= mesh_plink_block(sta);
1137                         break;
1138                 }
1139
1140                 if (params->local_pm)
1141                         changed |=
1142                               ieee80211_mps_set_sta_local_pm(sta,
1143                                                              params->local_pm);
1144                 ieee80211_mbss_info_change_notify(sdata, changed);
1145 #endif
1146         }
1147
1148         /* set the STA state after all sta info from usermode has been set */
1149         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1150                 ret = sta_apply_auth_flags(local, sta, mask, set);
1151                 if (ret)
1152                         return ret;
1153         }
1154
1155         return 0;
1156 }
1157
1158 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1159                                  const u8 *mac,
1160                                  struct station_parameters *params)
1161 {
1162         struct ieee80211_local *local = wiphy_priv(wiphy);
1163         struct sta_info *sta;
1164         struct ieee80211_sub_if_data *sdata;
1165         int err;
1166         int layer2_update;
1167
1168         if (params->vlan) {
1169                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1170
1171                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1172                     sdata->vif.type != NL80211_IFTYPE_AP)
1173                         return -EINVAL;
1174         } else
1175                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1176
1177         if (ether_addr_equal(mac, sdata->vif.addr))
1178                 return -EINVAL;
1179
1180         if (is_multicast_ether_addr(mac))
1181                 return -EINVAL;
1182
1183         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1184         if (!sta)
1185                 return -ENOMEM;
1186
1187         /*
1188          * defaults -- if userspace wants something else we'll
1189          * change it accordingly in sta_apply_parameters()
1190          */
1191         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1192                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1193                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1194         } else {
1195                 sta->sta.tdls = true;
1196         }
1197
1198         err = sta_apply_parameters(local, sta, params);
1199         if (err) {
1200                 sta_info_free(local, sta);
1201                 return err;
1202         }
1203
1204         /*
1205          * for TDLS, rate control should be initialized only when
1206          * rates are known and station is marked authorized
1207          */
1208         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1209                 rate_control_rate_init(sta);
1210
1211         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1212                 sdata->vif.type == NL80211_IFTYPE_AP;
1213
1214         err = sta_info_insert_rcu(sta);
1215         if (err) {
1216                 rcu_read_unlock();
1217                 return err;
1218         }
1219
1220         if (layer2_update)
1221                 ieee80211_send_layer2_update(sta);
1222
1223         rcu_read_unlock();
1224
1225         return 0;
1226 }
1227
1228 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1229                                  struct station_del_parameters *params)
1230 {
1231         struct ieee80211_sub_if_data *sdata;
1232
1233         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1234
1235         if (params->mac)
1236                 return sta_info_destroy_addr_bss(sdata, params->mac);
1237
1238         sta_info_flush(sdata);
1239         return 0;
1240 }
1241
1242 static int ieee80211_change_station(struct wiphy *wiphy,
1243                                     struct net_device *dev, const u8 *mac,
1244                                     struct station_parameters *params)
1245 {
1246         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1247         struct ieee80211_local *local = wiphy_priv(wiphy);
1248         struct sta_info *sta;
1249         struct ieee80211_sub_if_data *vlansdata;
1250         enum cfg80211_station_type statype;
1251         int err;
1252
1253         mutex_lock(&local->sta_mtx);
1254
1255         sta = sta_info_get_bss(sdata, mac);
1256         if (!sta) {
1257                 err = -ENOENT;
1258                 goto out_err;
1259         }
1260
1261         switch (sdata->vif.type) {
1262         case NL80211_IFTYPE_MESH_POINT:
1263                 if (sdata->u.mesh.user_mpm)
1264                         statype = CFG80211_STA_MESH_PEER_USER;
1265                 else
1266                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1267                 break;
1268         case NL80211_IFTYPE_ADHOC:
1269                 statype = CFG80211_STA_IBSS;
1270                 break;
1271         case NL80211_IFTYPE_STATION:
1272                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1273                         statype = CFG80211_STA_AP_STA;
1274                         break;
1275                 }
1276                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1277                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1278                 else
1279                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1280                 break;
1281         case NL80211_IFTYPE_AP:
1282         case NL80211_IFTYPE_AP_VLAN:
1283                 statype = CFG80211_STA_AP_CLIENT;
1284                 break;
1285         default:
1286                 err = -EOPNOTSUPP;
1287                 goto out_err;
1288         }
1289
1290         err = cfg80211_check_station_change(wiphy, params, statype);
1291         if (err)
1292                 goto out_err;
1293
1294         if (params->vlan && params->vlan != sta->sdata->dev) {
1295                 bool prev_4addr = false;
1296                 bool new_4addr = false;
1297
1298                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1299
1300                 if (params->vlan->ieee80211_ptr->use_4addr) {
1301                         if (vlansdata->u.vlan.sta) {
1302                                 err = -EBUSY;
1303                                 goto out_err;
1304                         }
1305
1306                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1307                         new_4addr = true;
1308                 }
1309
1310                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1311                     sta->sdata->u.vlan.sta) {
1312                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1313                         prev_4addr = true;
1314                 }
1315
1316                 sta->sdata = vlansdata;
1317
1318                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1319                     prev_4addr != new_4addr) {
1320                         if (new_4addr)
1321                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1322                         else
1323                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1324                 }
1325
1326                 ieee80211_send_layer2_update(sta);
1327         }
1328
1329         err = sta_apply_parameters(local, sta, params);
1330         if (err)
1331                 goto out_err;
1332
1333         /* When peer becomes authorized, init rate control as well */
1334         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1335             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1336                 rate_control_rate_init(sta);
1337
1338         mutex_unlock(&local->sta_mtx);
1339
1340         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1341              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1342             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1343             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1344             sta_info_tx_streams(sta) != 1) {
1345                 ht_dbg(sta->sdata,
1346                        "%pM just authorized and MIMO capable - update SMPS\n",
1347                        sta->sta.addr);
1348                 ieee80211_send_smps_action(sta->sdata,
1349                         sta->sdata->bss->req_smps,
1350                         sta->sta.addr,
1351                         sta->sdata->vif.bss_conf.bssid);
1352         }
1353
1354         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1355             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1356                 ieee80211_recalc_ps(local, -1);
1357                 ieee80211_recalc_ps_vif(sdata);
1358         }
1359
1360         return 0;
1361 out_err:
1362         mutex_unlock(&local->sta_mtx);
1363         return err;
1364 }
1365
1366 #ifdef CONFIG_MAC80211_MESH
1367 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1368                                const u8 *dst, const u8 *next_hop)
1369 {
1370         struct ieee80211_sub_if_data *sdata;
1371         struct mesh_path *mpath;
1372         struct sta_info *sta;
1373
1374         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1375
1376         rcu_read_lock();
1377         sta = sta_info_get(sdata, next_hop);
1378         if (!sta) {
1379                 rcu_read_unlock();
1380                 return -ENOENT;
1381         }
1382
1383         mpath = mesh_path_add(sdata, dst);
1384         if (IS_ERR(mpath)) {
1385                 rcu_read_unlock();
1386                 return PTR_ERR(mpath);
1387         }
1388
1389         mesh_path_fix_nexthop(mpath, sta);
1390
1391         rcu_read_unlock();
1392         return 0;
1393 }
1394
1395 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1396                                const u8 *dst)
1397 {
1398         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1399
1400         if (dst)
1401                 return mesh_path_del(sdata, dst);
1402
1403         mesh_path_flush_by_iface(sdata);
1404         return 0;
1405 }
1406
1407 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1408                                   const u8 *dst, const u8 *next_hop)
1409 {
1410         struct ieee80211_sub_if_data *sdata;
1411         struct mesh_path *mpath;
1412         struct sta_info *sta;
1413
1414         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1415
1416         rcu_read_lock();
1417
1418         sta = sta_info_get(sdata, next_hop);
1419         if (!sta) {
1420                 rcu_read_unlock();
1421                 return -ENOENT;
1422         }
1423
1424         mpath = mesh_path_lookup(sdata, dst);
1425         if (!mpath) {
1426                 rcu_read_unlock();
1427                 return -ENOENT;
1428         }
1429
1430         mesh_path_fix_nexthop(mpath, sta);
1431
1432         rcu_read_unlock();
1433         return 0;
1434 }
1435
1436 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1437                             struct mpath_info *pinfo)
1438 {
1439         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1440
1441         if (next_hop_sta)
1442                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1443         else
1444                 memset(next_hop, 0, ETH_ALEN);
1445
1446         memset(pinfo, 0, sizeof(*pinfo));
1447
1448         pinfo->generation = mesh_paths_generation;
1449
1450         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1451                         MPATH_INFO_SN |
1452                         MPATH_INFO_METRIC |
1453                         MPATH_INFO_EXPTIME |
1454                         MPATH_INFO_DISCOVERY_TIMEOUT |
1455                         MPATH_INFO_DISCOVERY_RETRIES |
1456                         MPATH_INFO_FLAGS;
1457
1458         pinfo->frame_qlen = mpath->frame_queue.qlen;
1459         pinfo->sn = mpath->sn;
1460         pinfo->metric = mpath->metric;
1461         if (time_before(jiffies, mpath->exp_time))
1462                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1463         pinfo->discovery_timeout =
1464                         jiffies_to_msecs(mpath->discovery_timeout);
1465         pinfo->discovery_retries = mpath->discovery_retries;
1466         if (mpath->flags & MESH_PATH_ACTIVE)
1467                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1468         if (mpath->flags & MESH_PATH_RESOLVING)
1469                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1470         if (mpath->flags & MESH_PATH_SN_VALID)
1471                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1472         if (mpath->flags & MESH_PATH_FIXED)
1473                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1474         if (mpath->flags & MESH_PATH_RESOLVED)
1475                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1476 }
1477
1478 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1479                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1480
1481 {
1482         struct ieee80211_sub_if_data *sdata;
1483         struct mesh_path *mpath;
1484
1485         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1486
1487         rcu_read_lock();
1488         mpath = mesh_path_lookup(sdata, dst);
1489         if (!mpath) {
1490                 rcu_read_unlock();
1491                 return -ENOENT;
1492         }
1493         memcpy(dst, mpath->dst, ETH_ALEN);
1494         mpath_set_pinfo(mpath, next_hop, pinfo);
1495         rcu_read_unlock();
1496         return 0;
1497 }
1498
1499 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1500                                 int idx, u8 *dst, u8 *next_hop,
1501                                 struct mpath_info *pinfo)
1502 {
1503         struct ieee80211_sub_if_data *sdata;
1504         struct mesh_path *mpath;
1505
1506         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1507
1508         rcu_read_lock();
1509         mpath = mesh_path_lookup_by_idx(sdata, idx);
1510         if (!mpath) {
1511                 rcu_read_unlock();
1512                 return -ENOENT;
1513         }
1514         memcpy(dst, mpath->dst, ETH_ALEN);
1515         mpath_set_pinfo(mpath, next_hop, pinfo);
1516         rcu_read_unlock();
1517         return 0;
1518 }
1519
1520 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1521                           struct mpath_info *pinfo)
1522 {
1523         memset(pinfo, 0, sizeof(*pinfo));
1524         memcpy(mpp, mpath->mpp, ETH_ALEN);
1525
1526         pinfo->generation = mpp_paths_generation;
1527 }
1528
1529 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1530                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1531
1532 {
1533         struct ieee80211_sub_if_data *sdata;
1534         struct mesh_path *mpath;
1535
1536         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1537
1538         rcu_read_lock();
1539         mpath = mpp_path_lookup(sdata, dst);
1540         if (!mpath) {
1541                 rcu_read_unlock();
1542                 return -ENOENT;
1543         }
1544         memcpy(dst, mpath->dst, ETH_ALEN);
1545         mpp_set_pinfo(mpath, mpp, pinfo);
1546         rcu_read_unlock();
1547         return 0;
1548 }
1549
1550 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1551                               int idx, u8 *dst, u8 *mpp,
1552                               struct mpath_info *pinfo)
1553 {
1554         struct ieee80211_sub_if_data *sdata;
1555         struct mesh_path *mpath;
1556
1557         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1558
1559         rcu_read_lock();
1560         mpath = mpp_path_lookup_by_idx(sdata, idx);
1561         if (!mpath) {
1562                 rcu_read_unlock();
1563                 return -ENOENT;
1564         }
1565         memcpy(dst, mpath->dst, ETH_ALEN);
1566         mpp_set_pinfo(mpath, mpp, pinfo);
1567         rcu_read_unlock();
1568         return 0;
1569 }
1570
1571 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1572                                 struct net_device *dev,
1573                                 struct mesh_config *conf)
1574 {
1575         struct ieee80211_sub_if_data *sdata;
1576         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1577
1578         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1579         return 0;
1580 }
1581
1582 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1583 {
1584         return (mask >> (parm-1)) & 0x1;
1585 }
1586
1587 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1588                 const struct mesh_setup *setup)
1589 {
1590         u8 *new_ie;
1591         const u8 *old_ie;
1592         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1593                                         struct ieee80211_sub_if_data, u.mesh);
1594
1595         /* allocate information elements */
1596         new_ie = NULL;
1597         old_ie = ifmsh->ie;
1598
1599         if (setup->ie_len) {
1600                 new_ie = kmemdup(setup->ie, setup->ie_len,
1601                                 GFP_KERNEL);
1602                 if (!new_ie)
1603                         return -ENOMEM;
1604         }
1605         ifmsh->ie_len = setup->ie_len;
1606         ifmsh->ie = new_ie;
1607         kfree(old_ie);
1608
1609         /* now copy the rest of the setup parameters */
1610         ifmsh->mesh_id_len = setup->mesh_id_len;
1611         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1612         ifmsh->mesh_sp_id = setup->sync_method;
1613         ifmsh->mesh_pp_id = setup->path_sel_proto;
1614         ifmsh->mesh_pm_id = setup->path_metric;
1615         ifmsh->user_mpm = setup->user_mpm;
1616         ifmsh->mesh_auth_id = setup->auth_id;
1617         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1618         if (setup->is_authenticated)
1619                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1620         if (setup->is_secure)
1621                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1622
1623         /* mcast rate setting in Mesh Node */
1624         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1625                                                 sizeof(setup->mcast_rate));
1626         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1627
1628         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1629         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1630
1631         return 0;
1632 }
1633
1634 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1635                                         struct net_device *dev, u32 mask,
1636                                         const struct mesh_config *nconf)
1637 {
1638         struct mesh_config *conf;
1639         struct ieee80211_sub_if_data *sdata;
1640         struct ieee80211_if_mesh *ifmsh;
1641
1642         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1643         ifmsh = &sdata->u.mesh;
1644
1645         /* Set the config options which we are interested in setting */
1646         conf = &(sdata->u.mesh.mshcfg);
1647         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1648                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1649         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1650                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1651         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1652                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1653         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1654                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1655         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1656                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1657         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1658                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1659         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1660                 conf->element_ttl = nconf->element_ttl;
1661         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1662                 if (ifmsh->user_mpm)
1663                         return -EBUSY;
1664                 conf->auto_open_plinks = nconf->auto_open_plinks;
1665         }
1666         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1667                 conf->dot11MeshNbrOffsetMaxNeighbor =
1668                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1669         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1670                 conf->dot11MeshHWMPmaxPREQretries =
1671                         nconf->dot11MeshHWMPmaxPREQretries;
1672         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1673                 conf->path_refresh_time = nconf->path_refresh_time;
1674         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1675                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1676         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1677                 conf->dot11MeshHWMPactivePathTimeout =
1678                         nconf->dot11MeshHWMPactivePathTimeout;
1679         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1680                 conf->dot11MeshHWMPpreqMinInterval =
1681                         nconf->dot11MeshHWMPpreqMinInterval;
1682         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1683                 conf->dot11MeshHWMPperrMinInterval =
1684                         nconf->dot11MeshHWMPperrMinInterval;
1685         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1686                            mask))
1687                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1688                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1689         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1690                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1691                 ieee80211_mesh_root_setup(ifmsh);
1692         }
1693         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1694                 /* our current gate announcement implementation rides on root
1695                  * announcements, so require this ifmsh to also be a root node
1696                  * */
1697                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1698                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1699                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1700                         ieee80211_mesh_root_setup(ifmsh);
1701                 }
1702                 conf->dot11MeshGateAnnouncementProtocol =
1703                         nconf->dot11MeshGateAnnouncementProtocol;
1704         }
1705         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1706                 conf->dot11MeshHWMPRannInterval =
1707                         nconf->dot11MeshHWMPRannInterval;
1708         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1709                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1710         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1711                 /* our RSSI threshold implementation is supported only for
1712                  * devices that report signal in dBm.
1713                  */
1714                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1715                         return -ENOTSUPP;
1716                 conf->rssi_threshold = nconf->rssi_threshold;
1717         }
1718         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1719                 conf->ht_opmode = nconf->ht_opmode;
1720                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1721                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1722         }
1723         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1724                 conf->dot11MeshHWMPactivePathToRootTimeout =
1725                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1726         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1727                 conf->dot11MeshHWMProotInterval =
1728                         nconf->dot11MeshHWMProotInterval;
1729         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1730                 conf->dot11MeshHWMPconfirmationInterval =
1731                         nconf->dot11MeshHWMPconfirmationInterval;
1732         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1733                 conf->power_mode = nconf->power_mode;
1734                 ieee80211_mps_local_status_update(sdata);
1735         }
1736         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1737                 conf->dot11MeshAwakeWindowDuration =
1738                         nconf->dot11MeshAwakeWindowDuration;
1739         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1740                 conf->plink_timeout = nconf->plink_timeout;
1741         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1742         return 0;
1743 }
1744
1745 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1746                                const struct mesh_config *conf,
1747                                const struct mesh_setup *setup)
1748 {
1749         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1750         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1751         int err;
1752
1753         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1754         err = copy_mesh_setup(ifmsh, setup);
1755         if (err)
1756                 return err;
1757
1758         /* can mesh use other SMPS modes? */
1759         sdata->smps_mode = IEEE80211_SMPS_OFF;
1760         sdata->needed_rx_chains = sdata->local->rx_chains;
1761
1762         mutex_lock(&sdata->local->mtx);
1763         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1764                                         IEEE80211_CHANCTX_SHARED);
1765         mutex_unlock(&sdata->local->mtx);
1766         if (err)
1767                 return err;
1768
1769         return ieee80211_start_mesh(sdata);
1770 }
1771
1772 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1773 {
1774         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1775
1776         ieee80211_stop_mesh(sdata);
1777         mutex_lock(&sdata->local->mtx);
1778         ieee80211_vif_release_channel(sdata);
1779         mutex_unlock(&sdata->local->mtx);
1780
1781         return 0;
1782 }
1783 #endif
1784
1785 static int ieee80211_change_bss(struct wiphy *wiphy,
1786                                 struct net_device *dev,
1787                                 struct bss_parameters *params)
1788 {
1789         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1790         enum ieee80211_band band;
1791         u32 changed = 0;
1792
1793         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1794                 return -ENOENT;
1795
1796         band = ieee80211_get_sdata_band(sdata);
1797
1798         if (params->use_cts_prot >= 0) {
1799                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1800                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1801         }
1802         if (params->use_short_preamble >= 0) {
1803                 sdata->vif.bss_conf.use_short_preamble =
1804                         params->use_short_preamble;
1805                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1806         }
1807
1808         if (!sdata->vif.bss_conf.use_short_slot &&
1809             band == IEEE80211_BAND_5GHZ) {
1810                 sdata->vif.bss_conf.use_short_slot = true;
1811                 changed |= BSS_CHANGED_ERP_SLOT;
1812         }
1813
1814         if (params->use_short_slot_time >= 0) {
1815                 sdata->vif.bss_conf.use_short_slot =
1816                         params->use_short_slot_time;
1817                 changed |= BSS_CHANGED_ERP_SLOT;
1818         }
1819
1820         if (params->basic_rates) {
1821                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1822                                          wiphy->bands[band],
1823                                          params->basic_rates,
1824                                          params->basic_rates_len,
1825                                          &sdata->vif.bss_conf.basic_rates);
1826                 changed |= BSS_CHANGED_BASIC_RATES;
1827         }
1828
1829         if (params->ap_isolate >= 0) {
1830                 if (params->ap_isolate)
1831                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1832                 else
1833                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1834         }
1835
1836         if (params->ht_opmode >= 0) {
1837                 sdata->vif.bss_conf.ht_operation_mode =
1838                         (u16) params->ht_opmode;
1839                 changed |= BSS_CHANGED_HT;
1840         }
1841
1842         if (params->p2p_ctwindow >= 0) {
1843                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1844                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1845                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1846                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1847                 changed |= BSS_CHANGED_P2P_PS;
1848         }
1849
1850         if (params->p2p_opp_ps > 0) {
1851                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1852                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1853                 changed |= BSS_CHANGED_P2P_PS;
1854         } else if (params->p2p_opp_ps == 0) {
1855                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1856                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1857                 changed |= BSS_CHANGED_P2P_PS;
1858         }
1859
1860         ieee80211_bss_info_change_notify(sdata, changed);
1861
1862         return 0;
1863 }
1864
1865 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1866                                     struct net_device *dev,
1867                                     struct ieee80211_txq_params *params)
1868 {
1869         struct ieee80211_local *local = wiphy_priv(wiphy);
1870         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1871         struct ieee80211_tx_queue_params p;
1872
1873         if (!local->ops->conf_tx)
1874                 return -EOPNOTSUPP;
1875
1876         if (local->hw.queues < IEEE80211_NUM_ACS)
1877                 return -EOPNOTSUPP;
1878
1879         memset(&p, 0, sizeof(p));
1880         p.aifs = params->aifs;
1881         p.cw_max = params->cwmax;
1882         p.cw_min = params->cwmin;
1883         p.txop = params->txop;
1884
1885         /*
1886          * Setting tx queue params disables u-apsd because it's only
1887          * called in master mode.
1888          */
1889         p.uapsd = false;
1890
1891         sdata->tx_conf[params->ac] = p;
1892         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1893                 wiphy_debug(local->hw.wiphy,
1894                             "failed to set TX queue parameters for AC %d\n",
1895                             params->ac);
1896                 return -EINVAL;
1897         }
1898
1899         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1900
1901         return 0;
1902 }
1903
1904 #ifdef CONFIG_PM
1905 static int ieee80211_suspend(struct wiphy *wiphy,
1906                              struct cfg80211_wowlan *wowlan)
1907 {
1908         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1909 }
1910
1911 static int ieee80211_resume(struct wiphy *wiphy)
1912 {
1913         return __ieee80211_resume(wiphy_priv(wiphy));
1914 }
1915 #else
1916 #define ieee80211_suspend NULL
1917 #define ieee80211_resume NULL
1918 #endif
1919
1920 static int ieee80211_scan(struct wiphy *wiphy,
1921                           struct cfg80211_scan_request *req)
1922 {
1923         struct ieee80211_sub_if_data *sdata;
1924
1925         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1926
1927         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1928         case NL80211_IFTYPE_STATION:
1929         case NL80211_IFTYPE_ADHOC:
1930         case NL80211_IFTYPE_MESH_POINT:
1931         case NL80211_IFTYPE_P2P_CLIENT:
1932         case NL80211_IFTYPE_P2P_DEVICE:
1933                 break;
1934         case NL80211_IFTYPE_P2P_GO:
1935                 if (sdata->local->ops->hw_scan)
1936                         break;
1937                 /*
1938                  * FIXME: implement NoA while scanning in software,
1939                  * for now fall through to allow scanning only when
1940                  * beaconing hasn't been configured yet
1941                  */
1942         case NL80211_IFTYPE_AP:
1943                 /*
1944                  * If the scan has been forced (and the driver supports
1945                  * forcing), don't care about being beaconing already.
1946                  * This will create problems to the attached stations (e.g. all
1947                  * the  frames sent while scanning on other channel will be
1948                  * lost)
1949                  */
1950                 if (sdata->u.ap.beacon &&
1951                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1952                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1953                         return -EOPNOTSUPP;
1954                 break;
1955         default:
1956                 return -EOPNOTSUPP;
1957         }
1958
1959         return ieee80211_request_scan(sdata, req);
1960 }
1961
1962 static int
1963 ieee80211_sched_scan_start(struct wiphy *wiphy,
1964                            struct net_device *dev,
1965                            struct cfg80211_sched_scan_request *req)
1966 {
1967         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1968
1969         if (!sdata->local->ops->sched_scan_start)
1970                 return -EOPNOTSUPP;
1971
1972         return ieee80211_request_sched_scan_start(sdata, req);
1973 }
1974
1975 static int
1976 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1977 {
1978         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1979
1980         if (!sdata->local->ops->sched_scan_stop)
1981                 return -EOPNOTSUPP;
1982
1983         return ieee80211_request_sched_scan_stop(sdata);
1984 }
1985
1986 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1987                           struct cfg80211_auth_request *req)
1988 {
1989         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1990 }
1991
1992 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1993                            struct cfg80211_assoc_request *req)
1994 {
1995         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1996 }
1997
1998 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1999                             struct cfg80211_deauth_request *req)
2000 {
2001         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2002 }
2003
2004 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2005                               struct cfg80211_disassoc_request *req)
2006 {
2007         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2008 }
2009
2010 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2011                                struct cfg80211_ibss_params *params)
2012 {
2013         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2014 }
2015
2016 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2017 {
2018         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2019 }
2020
2021 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2022                                     int rate[IEEE80211_NUM_BANDS])
2023 {
2024         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2025
2026         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2027                sizeof(int) * IEEE80211_NUM_BANDS);
2028
2029         return 0;
2030 }
2031
2032 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2033 {
2034         struct ieee80211_local *local = wiphy_priv(wiphy);
2035         int err;
2036
2037         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2038                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2039
2040                 if (err)
2041                         return err;
2042         }
2043
2044         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2045             (changed & WIPHY_PARAM_DYN_ACK)) {
2046                 s16 coverage_class;
2047
2048                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2049                                         wiphy->coverage_class : -1;
2050                 err = drv_set_coverage_class(local, coverage_class);
2051
2052                 if (err)
2053                         return err;
2054         }
2055
2056         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2057                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2058
2059                 if (err)
2060                         return err;
2061         }
2062
2063         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2064                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2065                         return -EINVAL;
2066                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2067         }
2068         if (changed & WIPHY_PARAM_RETRY_LONG) {
2069                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2070                         return -EINVAL;
2071                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2072         }
2073         if (changed &
2074             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2075                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2076
2077         return 0;
2078 }
2079
2080 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2081                                   struct wireless_dev *wdev,
2082                                   enum nl80211_tx_power_setting type, int mbm)
2083 {
2084         struct ieee80211_local *local = wiphy_priv(wiphy);
2085         struct ieee80211_sub_if_data *sdata;
2086
2087         if (wdev) {
2088                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2089
2090                 switch (type) {
2091                 case NL80211_TX_POWER_AUTOMATIC:
2092                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2093                         break;
2094                 case NL80211_TX_POWER_LIMITED:
2095                 case NL80211_TX_POWER_FIXED:
2096                         if (mbm < 0 || (mbm % 100))
2097                                 return -EOPNOTSUPP;
2098                         sdata->user_power_level = MBM_TO_DBM(mbm);
2099                         break;
2100                 }
2101
2102                 ieee80211_recalc_txpower(sdata);
2103
2104                 return 0;
2105         }
2106
2107         switch (type) {
2108         case NL80211_TX_POWER_AUTOMATIC:
2109                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2110                 break;
2111         case NL80211_TX_POWER_LIMITED:
2112         case NL80211_TX_POWER_FIXED:
2113                 if (mbm < 0 || (mbm % 100))
2114                         return -EOPNOTSUPP;
2115                 local->user_power_level = MBM_TO_DBM(mbm);
2116                 break;
2117         }
2118
2119         mutex_lock(&local->iflist_mtx);
2120         list_for_each_entry(sdata, &local->interfaces, list)
2121                 sdata->user_power_level = local->user_power_level;
2122         list_for_each_entry(sdata, &local->interfaces, list)
2123                 ieee80211_recalc_txpower(sdata);
2124         mutex_unlock(&local->iflist_mtx);
2125
2126         return 0;
2127 }
2128
2129 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2130                                   struct wireless_dev *wdev,
2131                                   int *dbm)
2132 {
2133         struct ieee80211_local *local = wiphy_priv(wiphy);
2134         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2135
2136         if (!local->use_chanctx)
2137                 *dbm = local->hw.conf.power_level;
2138         else
2139                 *dbm = sdata->vif.bss_conf.txpower;
2140
2141         return 0;
2142 }
2143
2144 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2145                                   const u8 *addr)
2146 {
2147         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2148
2149         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2150
2151         return 0;
2152 }
2153
2154 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2155 {
2156         struct ieee80211_local *local = wiphy_priv(wiphy);
2157
2158         drv_rfkill_poll(local);
2159 }
2160
2161 #ifdef CONFIG_NL80211_TESTMODE
2162 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2163                                   struct wireless_dev *wdev,
2164                                   void *data, int len)
2165 {
2166         struct ieee80211_local *local = wiphy_priv(wiphy);
2167         struct ieee80211_vif *vif = NULL;
2168
2169         if (!local->ops->testmode_cmd)
2170                 return -EOPNOTSUPP;
2171
2172         if (wdev) {
2173                 struct ieee80211_sub_if_data *sdata;
2174
2175                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2176                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2177                         vif = &sdata->vif;
2178         }
2179
2180         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2181 }
2182
2183 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2184                                    struct sk_buff *skb,
2185                                    struct netlink_callback *cb,
2186                                    void *data, int len)
2187 {
2188         struct ieee80211_local *local = wiphy_priv(wiphy);
2189
2190         if (!local->ops->testmode_dump)
2191                 return -EOPNOTSUPP;
2192
2193         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2194 }
2195 #endif
2196
2197 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2198                                 enum ieee80211_smps_mode smps_mode)
2199 {
2200         struct sta_info *sta;
2201         enum ieee80211_smps_mode old_req;
2202         int i;
2203
2204         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2205                 return -EINVAL;
2206
2207         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2208                 return 0;
2209
2210         old_req = sdata->u.ap.req_smps;
2211         sdata->u.ap.req_smps = smps_mode;
2212
2213         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2214         if (old_req == smps_mode ||
2215             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2216                 return 0;
2217
2218          /* If no associated stations, there's no need to do anything */
2219         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2220                 sdata->smps_mode = smps_mode;
2221                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2222                 return 0;
2223         }
2224
2225         ht_dbg(sdata,
2226                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2227                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2228
2229         mutex_lock(&sdata->local->sta_mtx);
2230         for (i = 0; i < STA_HASH_SIZE; i++) {
2231                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2232                                 lockdep_is_held(&sdata->local->sta_mtx));
2233                      sta;
2234                      sta = rcu_dereference_protected(sta->hnext,
2235                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2236                         /*
2237                          * Only stations associated to our AP and
2238                          * associated VLANs
2239                          */
2240                         if (sta->sdata->bss != &sdata->u.ap)
2241                                 continue;
2242
2243                         /* This station doesn't support MIMO - skip it */
2244                         if (sta_info_tx_streams(sta) == 1)
2245                                 continue;
2246
2247                         /*
2248                          * Don't wake up a STA just to send the action frame
2249                          * unless we are getting more restrictive.
2250                          */
2251                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2252                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2253                                                            smps_mode)) {
2254                                 ht_dbg(sdata,
2255                                        "Won't send SMPS to sleeping STA %pM\n",
2256                                        sta->sta.addr);
2257                                 continue;
2258                         }
2259
2260                         /*
2261                          * If the STA is not authorized, wait until it gets
2262                          * authorized and the action frame will be sent then.
2263                          */
2264                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2265                                 continue;
2266
2267                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2268                         ieee80211_send_smps_action(sdata, smps_mode,
2269                                                    sta->sta.addr,
2270                                                    sdata->vif.bss_conf.bssid);
2271                 }
2272         }
2273         mutex_unlock(&sdata->local->sta_mtx);
2274
2275         sdata->smps_mode = smps_mode;
2276         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2277
2278         return 0;
2279 }
2280
2281 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2282                                  enum ieee80211_smps_mode smps_mode)
2283 {
2284         const u8 *ap;
2285         enum ieee80211_smps_mode old_req;
2286         int err;
2287
2288         lockdep_assert_held(&sdata->wdev.mtx);
2289
2290         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2291                 return -EINVAL;
2292
2293         old_req = sdata->u.mgd.req_smps;
2294         sdata->u.mgd.req_smps = smps_mode;
2295
2296         if (old_req == smps_mode &&
2297             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2298                 return 0;
2299
2300         /*
2301          * If not associated, or current association is not an HT
2302          * association, there's no need to do anything, just store
2303          * the new value until we associate.
2304          */
2305         if (!sdata->u.mgd.associated ||
2306             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2307                 return 0;
2308
2309         ap = sdata->u.mgd.associated->bssid;
2310
2311         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2312                 if (sdata->u.mgd.powersave)
2313                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2314                 else
2315                         smps_mode = IEEE80211_SMPS_OFF;
2316         }
2317
2318         /* send SM PS frame to AP */
2319         err = ieee80211_send_smps_action(sdata, smps_mode,
2320                                          ap, ap);
2321         if (err)
2322                 sdata->u.mgd.req_smps = old_req;
2323
2324         return err;
2325 }
2326
2327 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2328                                     bool enabled, int timeout)
2329 {
2330         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2331         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2332
2333         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2334                 return -EOPNOTSUPP;
2335
2336         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2337                 return -EOPNOTSUPP;
2338
2339         if (enabled == sdata->u.mgd.powersave &&
2340             timeout == local->dynamic_ps_forced_timeout)
2341                 return 0;
2342
2343         sdata->u.mgd.powersave = enabled;
2344         local->dynamic_ps_forced_timeout = timeout;
2345
2346         /* no change, but if automatic follow powersave */
2347         sdata_lock(sdata);
2348         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2349         sdata_unlock(sdata);
2350
2351         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2352                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2353
2354         ieee80211_recalc_ps(local, -1);
2355         ieee80211_recalc_ps_vif(sdata);
2356
2357         return 0;
2358 }
2359
2360 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2361                                          struct net_device *dev,
2362                                          s32 rssi_thold, u32 rssi_hyst)
2363 {
2364         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2365         struct ieee80211_vif *vif = &sdata->vif;
2366         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2367
2368         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2369             rssi_hyst == bss_conf->cqm_rssi_hyst)
2370                 return 0;
2371
2372         bss_conf->cqm_rssi_thold = rssi_thold;
2373         bss_conf->cqm_rssi_hyst = rssi_hyst;
2374
2375         /* tell the driver upon association, unless already associated */
2376         if (sdata->u.mgd.associated &&
2377             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2378                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2379
2380         return 0;
2381 }
2382
2383 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2384                                       struct net_device *dev,
2385                                       const u8 *addr,
2386                                       const struct cfg80211_bitrate_mask *mask)
2387 {
2388         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2389         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2390         int i, ret;
2391
2392         if (!ieee80211_sdata_running(sdata))
2393                 return -ENETDOWN;
2394
2395         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2396                 ret = drv_set_bitrate_mask(local, sdata, mask);
2397                 if (ret)
2398                         return ret;
2399         }
2400
2401         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2402                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2403                 int j;
2404
2405                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2406                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2407                        sizeof(mask->control[i].ht_mcs));
2408
2409                 sdata->rc_has_mcs_mask[i] = false;
2410                 if (!sband)
2411                         continue;
2412
2413                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2414                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2415                                 sdata->rc_has_mcs_mask[i] = true;
2416                                 break;
2417                         }
2418         }
2419
2420         return 0;
2421 }
2422
2423 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2424                                            struct ieee80211_roc_work *new_roc,
2425                                            struct ieee80211_roc_work *cur_roc)
2426 {
2427         unsigned long j = jiffies;
2428         unsigned long cur_roc_end = cur_roc->hw_start_time +
2429                                     msecs_to_jiffies(cur_roc->duration);
2430         struct ieee80211_roc_work *next_roc;
2431         int new_dur;
2432
2433         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2434                 return false;
2435
2436         if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
2437                 return false;
2438
2439         ieee80211_handle_roc_started(new_roc);
2440
2441         new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);
2442
2443         /* cur_roc is long enough - add new_roc to the dependents list. */
2444         if (new_dur <= 0) {
2445                 list_add_tail(&new_roc->list, &cur_roc->dependents);
2446                 return true;
2447         }
2448
2449         new_roc->duration = new_dur;
2450
2451         /*
2452          * if cur_roc was already coalesced before, we might
2453          * want to extend the next roc instead of adding
2454          * a new one.
2455          */
2456         next_roc = list_entry(cur_roc->list.next,
2457                               struct ieee80211_roc_work, list);
2458         if (&next_roc->list != &local->roc_list &&
2459             next_roc->chan == new_roc->chan &&
2460             next_roc->sdata == new_roc->sdata &&
2461             !WARN_ON(next_roc->started)) {
2462                 list_add_tail(&new_roc->list, &next_roc->dependents);
2463                 next_roc->duration = max(next_roc->duration,
2464                                          new_roc->duration);
2465                 next_roc->type = max(next_roc->type, new_roc->type);
2466                 return true;
2467         }
2468
2469         /* add right after cur_roc */
2470         list_add(&new_roc->list, &cur_roc->list);
2471
2472         return true;
2473 }
2474
2475 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2476                                     struct ieee80211_sub_if_data *sdata,
2477                                     struct ieee80211_channel *channel,
2478                                     unsigned int duration, u64 *cookie,
2479                                     struct sk_buff *txskb,
2480                                     enum ieee80211_roc_type type)
2481 {
2482         struct ieee80211_roc_work *roc, *tmp;
2483         bool queued = false;
2484         int ret;
2485
2486         lockdep_assert_held(&local->mtx);
2487
2488         if (local->use_chanctx && !local->ops->remain_on_channel)
2489                 return -EOPNOTSUPP;
2490
2491         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2492         if (!roc)
2493                 return -ENOMEM;
2494
2495         /*
2496          * If the duration is zero, then the driver
2497          * wouldn't actually do anything. Set it to
2498          * 10 for now.
2499          *
2500          * TODO: cancel the off-channel operation
2501          *       when we get the SKB's TX status and
2502          *       the wait time was zero before.
2503          */
2504         if (!duration)
2505                 duration = 10;
2506
2507         roc->chan = channel;
2508         roc->duration = duration;
2509         roc->req_duration = duration;
2510         roc->frame = txskb;
2511         roc->type = type;
2512         roc->mgmt_tx_cookie = (unsigned long)txskb;
2513         roc->sdata = sdata;
2514         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2515         INIT_LIST_HEAD(&roc->dependents);
2516
2517         /*
2518          * cookie is either the roc cookie (for normal roc)
2519          * or the SKB (for mgmt TX)
2520          */
2521         if (!txskb) {
2522                 /* local->mtx protects this */
2523                 local->roc_cookie_counter++;
2524                 roc->cookie = local->roc_cookie_counter;
2525                 /* wow, you wrapped 64 bits ... more likely a bug */
2526                 if (WARN_ON(roc->cookie == 0)) {
2527                         roc->cookie = 1;
2528                         local->roc_cookie_counter++;
2529                 }
2530                 *cookie = roc->cookie;
2531         } else {
2532                 *cookie = (unsigned long)txskb;
2533         }
2534
2535         /* if there's one pending or we're scanning, queue this one */
2536         if (!list_empty(&local->roc_list) ||
2537             local->scanning || local->radar_detect_enabled)
2538                 goto out_check_combine;
2539
2540         /* if not HW assist, just queue & schedule work */
2541         if (!local->ops->remain_on_channel) {
2542                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2543                 goto out_queue;
2544         }
2545
2546         /* otherwise actually kick it off here (for error handling) */
2547
2548         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2549         if (ret) {
2550                 kfree(roc);
2551                 return ret;
2552         }
2553
2554         roc->started = true;
2555         goto out_queue;
2556
2557  out_check_combine:
2558         list_for_each_entry(tmp, &local->roc_list, list) {
2559                 if (tmp->chan != channel || tmp->sdata != sdata)
2560                         continue;
2561
2562                 /*
2563                  * Extend this ROC if possible:
2564                  *
2565                  * If it hasn't started yet, just increase the duration
2566                  * and add the new one to the list of dependents.
2567                  * If the type of the new ROC has higher priority, modify the
2568                  * type of the previous one to match that of the new one.
2569                  */
2570                 if (!tmp->started) {
2571                         list_add_tail(&roc->list, &tmp->dependents);
2572                         tmp->duration = max(tmp->duration, roc->duration);
2573                         tmp->type = max(tmp->type, roc->type);
2574                         queued = true;
2575                         break;
2576                 }
2577
2578                 /* If it has already started, it's more difficult ... */
2579                 if (local->ops->remain_on_channel) {
2580                         /*
2581                          * In the offloaded ROC case, if it hasn't begun, add
2582                          * this new one to the dependent list to be handled
2583                          * when the master one begins. If it has begun,
2584                          * check that there's still a minimum time left and
2585                          * if so, start this one, transmitting the frame, but
2586                          * add it to the list directly after this one with
2587                          * a reduced time so we'll ask the driver to execute
2588                          * it right after finishing the previous one, in the
2589                          * hope that it'll also be executed right afterwards,
2590                          * effectively extending the old one.
2591                          * If there's no minimum time left, just add it to the
2592                          * normal list.
2593                          * TODO: the ROC type is ignored here, assuming that it
2594                          * is better to immediately use the current ROC.
2595                          */
2596                         if (!tmp->hw_begun) {
2597                                 list_add_tail(&roc->list, &tmp->dependents);
2598                                 queued = true;
2599                                 break;
2600                         }
2601
2602                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2603                                 queued = true;
2604                 } else if (del_timer_sync(&tmp->work.timer)) {
2605                         unsigned long new_end;
2606
2607                         /*
2608                          * In the software ROC case, cancel the timer, if
2609                          * that fails then the finish work is already
2610                          * queued/pending and thus we queue the new ROC
2611                          * normally, if that succeeds then we can extend
2612                          * the timer duration and TX the frame (if any.)
2613                          */
2614
2615                         list_add_tail(&roc->list, &tmp->dependents);
2616                         queued = true;
2617
2618                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2619
2620                         /* ok, it was started & we canceled timer */
2621                         if (time_after(new_end, tmp->work.timer.expires))
2622                                 mod_timer(&tmp->work.timer, new_end);
2623                         else
2624                                 add_timer(&tmp->work.timer);
2625
2626                         ieee80211_handle_roc_started(roc);
2627                 }
2628                 break;
2629         }
2630
2631  out_queue:
2632         if (!queued)
2633                 list_add_tail(&roc->list, &local->roc_list);
2634
2635         return 0;
2636 }
2637
2638 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2639                                        struct wireless_dev *wdev,
2640                                        struct ieee80211_channel *chan,
2641                                        unsigned int duration,
2642                                        u64 *cookie)
2643 {
2644         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2645         struct ieee80211_local *local = sdata->local;
2646         int ret;
2647
2648         mutex_lock(&local->mtx);
2649         ret = ieee80211_start_roc_work(local, sdata, chan,
2650                                        duration, cookie, NULL,
2651                                        IEEE80211_ROC_TYPE_NORMAL);
2652         mutex_unlock(&local->mtx);
2653
2654         return ret;
2655 }
2656
2657 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2658                                 u64 cookie, bool mgmt_tx)
2659 {
2660         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2661         int ret;
2662
2663         mutex_lock(&local->mtx);
2664         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2665                 struct ieee80211_roc_work *dep, *tmp2;
2666
2667                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2668                         if (!mgmt_tx && dep->cookie != cookie)
2669                                 continue;
2670                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2671                                 continue;
2672                         /* found dependent item -- just remove it */
2673                         list_del(&dep->list);
2674                         mutex_unlock(&local->mtx);
2675
2676                         ieee80211_roc_notify_destroy(dep, true);
2677                         return 0;
2678                 }
2679
2680                 if (!mgmt_tx && roc->cookie != cookie)
2681                         continue;
2682                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2683                         continue;
2684
2685                 found = roc;
2686                 break;
2687         }
2688
2689         if (!found) {
2690                 mutex_unlock(&local->mtx);
2691                 return -ENOENT;
2692         }
2693
2694         /*
2695          * We found the item to cancel, so do that. Note that it
2696          * may have dependents, which we also cancel (and send
2697          * the expired signal for.) Not doing so would be quite
2698          * tricky here, but we may need to fix it later.
2699          */
2700
2701         if (local->ops->remain_on_channel) {
2702                 if (found->started) {
2703                         ret = drv_cancel_remain_on_channel(local);
2704                         if (WARN_ON_ONCE(ret)) {
2705                                 mutex_unlock(&local->mtx);
2706                                 return ret;
2707                         }
2708                 }
2709
2710                 list_del(&found->list);
2711
2712                 if (found->started)
2713                         ieee80211_start_next_roc(local);
2714                 mutex_unlock(&local->mtx);
2715
2716                 ieee80211_roc_notify_destroy(found, true);
2717         } else {
2718                 /* work may be pending so use it all the time */
2719                 found->abort = true;
2720                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2721
2722                 mutex_unlock(&local->mtx);
2723
2724                 /* work will clean up etc */
2725                 flush_delayed_work(&found->work);
2726                 WARN_ON(!found->to_be_freed);
2727                 kfree(found);
2728         }
2729
2730         return 0;
2731 }
2732
2733 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2734                                               struct wireless_dev *wdev,
2735                                               u64 cookie)
2736 {
2737         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2738         struct ieee80211_local *local = sdata->local;
2739
2740         return ieee80211_cancel_roc(local, cookie, false);
2741 }
2742
2743 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2744                                            struct net_device *dev,
2745                                            struct cfg80211_chan_def *chandef,
2746                                            u32 cac_time_ms)
2747 {
2748         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2749         struct ieee80211_local *local = sdata->local;
2750         int err;
2751
2752         mutex_lock(&local->mtx);
2753         if (!list_empty(&local->roc_list) || local->scanning) {
2754                 err = -EBUSY;
2755                 goto out_unlock;
2756         }
2757
2758         /* whatever, but channel contexts should not complain about that one */
2759         sdata->smps_mode = IEEE80211_SMPS_OFF;
2760         sdata->needed_rx_chains = local->rx_chains;
2761
2762         err = ieee80211_vif_use_channel(sdata, chandef,
2763                                         IEEE80211_CHANCTX_SHARED);
2764         if (err)
2765                 goto out_unlock;
2766
2767         ieee80211_queue_delayed_work(&sdata->local->hw,
2768                                      &sdata->dfs_cac_timer_work,
2769                                      msecs_to_jiffies(cac_time_ms));
2770
2771  out_unlock:
2772         mutex_unlock(&local->mtx);
2773         return err;
2774 }
2775
2776 static struct cfg80211_beacon_data *
2777 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2778 {
2779         struct cfg80211_beacon_data *new_beacon;
2780         u8 *pos;
2781         int len;
2782
2783         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2784               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2785               beacon->probe_resp_len;
2786
2787         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2788         if (!new_beacon)
2789                 return NULL;
2790
2791         pos = (u8 *)(new_beacon + 1);
2792         if (beacon->head_len) {
2793                 new_beacon->head_len = beacon->head_len;
2794                 new_beacon->head = pos;
2795                 memcpy(pos, beacon->head, beacon->head_len);
2796                 pos += beacon->head_len;
2797         }
2798         if (beacon->tail_len) {
2799                 new_beacon->tail_len = beacon->tail_len;
2800                 new_beacon->tail = pos;
2801                 memcpy(pos, beacon->tail, beacon->tail_len);
2802                 pos += beacon->tail_len;
2803         }
2804         if (beacon->beacon_ies_len) {
2805                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2806                 new_beacon->beacon_ies = pos;
2807                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2808                 pos += beacon->beacon_ies_len;
2809         }
2810         if (beacon->proberesp_ies_len) {
2811                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2812                 new_beacon->proberesp_ies = pos;
2813                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2814                 pos += beacon->proberesp_ies_len;
2815         }
2816         if (beacon->assocresp_ies_len) {
2817                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2818                 new_beacon->assocresp_ies = pos;
2819                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2820                 pos += beacon->assocresp_ies_len;
2821         }
2822         if (beacon->probe_resp_len) {
2823                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2824                 beacon->probe_resp = pos;
2825                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2826                 pos += beacon->probe_resp_len;
2827         }
2828
2829         return new_beacon;
2830 }
2831
2832 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2833 {
2834         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2835
2836         ieee80211_queue_work(&sdata->local->hw,
2837                              &sdata->csa_finalize_work);
2838 }
2839 EXPORT_SYMBOL(ieee80211_csa_finish);
2840
2841 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2842                                           u32 *changed)
2843 {
2844         int err;
2845
2846         switch (sdata->vif.type) {
2847         case NL80211_IFTYPE_AP:
2848                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2849                                               NULL);
2850                 kfree(sdata->u.ap.next_beacon);
2851                 sdata->u.ap.next_beacon = NULL;
2852
2853                 if (err < 0)
2854                         return err;
2855                 *changed |= err;
2856                 break;
2857         case NL80211_IFTYPE_ADHOC:
2858                 err = ieee80211_ibss_finish_csa(sdata);
2859                 if (err < 0)
2860                         return err;
2861                 *changed |= err;
2862                 break;
2863 #ifdef CONFIG_MAC80211_MESH
2864         case NL80211_IFTYPE_MESH_POINT:
2865                 err = ieee80211_mesh_finish_csa(sdata);
2866                 if (err < 0)
2867                         return err;
2868                 *changed |= err;
2869                 break;
2870 #endif
2871         default:
2872                 WARN_ON(1);
2873                 return -EINVAL;
2874         }
2875
2876         return 0;
2877 }
2878
2879 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2880 {
2881         struct ieee80211_local *local = sdata->local;
2882         u32 changed = 0;
2883         int err;
2884
2885         sdata_assert_lock(sdata);
2886         lockdep_assert_held(&local->mtx);
2887         lockdep_assert_held(&local->chanctx_mtx);
2888
2889         /*
2890          * using reservation isn't immediate as it may be deferred until later
2891          * with multi-vif. once reservation is complete it will re-schedule the
2892          * work with no reserved_chanctx so verify chandef to check if it
2893          * completed successfully
2894          */
2895
2896         if (sdata->reserved_chanctx) {
2897                 /*
2898                  * with multi-vif csa driver may call ieee80211_csa_finish()
2899                  * many times while waiting for other interfaces to use their
2900                  * reservations
2901                  */
2902                 if (sdata->reserved_ready)
2903                         return 0;
2904
2905                 return ieee80211_vif_use_reserved_context(sdata);
2906         }
2907
2908         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2909                                         &sdata->csa_chandef))
2910                 return -EINVAL;
2911
2912         sdata->vif.csa_active = false;
2913
2914         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2915         if (err)
2916                 return err;
2917
2918         ieee80211_bss_info_change_notify(sdata, changed);
2919
2920         if (sdata->csa_block_tx) {
2921                 ieee80211_wake_vif_queues(local, sdata,
2922                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2923                 sdata->csa_block_tx = false;
2924         }
2925
2926         err = drv_post_channel_switch(sdata);
2927         if (err)
2928                 return err;
2929
2930         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2931
2932         return 0;
2933 }
2934
2935 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2936 {
2937         if (__ieee80211_csa_finalize(sdata)) {
2938                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2939                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2940                                     GFP_KERNEL);
2941         }
2942 }
2943
2944 void ieee80211_csa_finalize_work(struct work_struct *work)
2945 {
2946         struct ieee80211_sub_if_data *sdata =
2947                 container_of(work, struct ieee80211_sub_if_data,
2948                              csa_finalize_work);
2949         struct ieee80211_local *local = sdata->local;
2950
2951         sdata_lock(sdata);
2952         mutex_lock(&local->mtx);
2953         mutex_lock(&local->chanctx_mtx);
2954
2955         /* AP might have been stopped while waiting for the lock. */
2956         if (!sdata->vif.csa_active)
2957                 goto unlock;
2958
2959         if (!ieee80211_sdata_running(sdata))
2960                 goto unlock;
2961
2962         ieee80211_csa_finalize(sdata);
2963
2964 unlock:
2965         mutex_unlock(&local->chanctx_mtx);
2966         mutex_unlock(&local->mtx);
2967         sdata_unlock(sdata);
2968 }
2969
2970 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2971                                     struct cfg80211_csa_settings *params,
2972                                     u32 *changed)
2973 {
2974         struct ieee80211_csa_settings csa = {};
2975         int err;
2976
2977         switch (sdata->vif.type) {
2978         case NL80211_IFTYPE_AP:
2979                 sdata->u.ap.next_beacon =
2980                         cfg80211_beacon_dup(&params->beacon_after);
2981                 if (!sdata->u.ap.next_beacon)
2982                         return -ENOMEM;
2983
2984                 /*
2985                  * With a count of 0, we don't have to wait for any
2986                  * TBTT before switching, so complete the CSA
2987                  * immediately.  In theory, with a count == 1 we
2988                  * should delay the switch until just before the next
2989                  * TBTT, but that would complicate things so we switch
2990                  * immediately too.  If we would delay the switch
2991                  * until the next TBTT, we would have to set the probe
2992                  * response here.
2993                  *
2994                  * TODO: A channel switch with count <= 1 without
2995                  * sending a CSA action frame is kind of useless,
2996                  * because the clients won't know we're changing
2997                  * channels.  The action frame must be implemented
2998                  * either here or in the userspace.
2999                  */
3000                 if (params->count <= 1)
3001                         break;
3002
3003                 if ((params->n_counter_offsets_beacon >
3004                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3005                     (params->n_counter_offsets_presp >
3006                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3007                         return -EINVAL;
3008
3009                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3010                 csa.counter_offsets_presp = params->counter_offsets_presp;
3011                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3012                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3013                 csa.count = params->count;
3014
3015                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3016                 if (err < 0) {
3017                         kfree(sdata->u.ap.next_beacon);
3018                         return err;
3019                 }
3020                 *changed |= err;
3021
3022                 break;
3023         case NL80211_IFTYPE_ADHOC:
3024                 if (!sdata->vif.bss_conf.ibss_joined)
3025                         return -EINVAL;
3026
3027                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3028                         return -EINVAL;
3029
3030                 switch (params->chandef.width) {
3031                 case NL80211_CHAN_WIDTH_40:
3032                         if (cfg80211_get_chandef_type(&params->chandef) !=
3033                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3034                                 return -EINVAL;
3035                 case NL80211_CHAN_WIDTH_5:
3036                 case NL80211_CHAN_WIDTH_10:
3037                 case NL80211_CHAN_WIDTH_20_NOHT:
3038                 case NL80211_CHAN_WIDTH_20:
3039                         break;
3040                 default:
3041                         return -EINVAL;
3042                 }
3043
3044                 /* changes into another band are not supported */
3045                 if (sdata->u.ibss.chandef.chan->band !=
3046                     params->chandef.chan->band)
3047                         return -EINVAL;
3048
3049                 /* see comments in the NL80211_IFTYPE_AP block */
3050                 if (params->count > 1) {
3051                         err = ieee80211_ibss_csa_beacon(sdata, params);
3052                         if (err < 0)
3053                                 return err;
3054                         *changed |= err;
3055                 }
3056
3057                 ieee80211_send_action_csa(sdata, params);
3058
3059                 break;
3060 #ifdef CONFIG_MAC80211_MESH
3061         case NL80211_IFTYPE_MESH_POINT: {
3062                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3063
3064                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3065                         return -EINVAL;
3066
3067                 /* changes into another band are not supported */
3068                 if (sdata->vif.bss_conf.chandef.chan->band !=
3069                     params->chandef.chan->band)
3070                         return -EINVAL;
3071
3072                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3073                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3074                         if (!ifmsh->pre_value)
3075                                 ifmsh->pre_value = 1;
3076                         else
3077                                 ifmsh->pre_value++;
3078                 }
3079
3080                 /* see comments in the NL80211_IFTYPE_AP block */
3081                 if (params->count > 1) {
3082                         err = ieee80211_mesh_csa_beacon(sdata, params);
3083                         if (err < 0) {
3084                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3085                                 return err;
3086                         }
3087                         *changed |= err;
3088                 }
3089
3090                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3091                         ieee80211_send_action_csa(sdata, params);
3092
3093                 break;
3094                 }
3095 #endif
3096         default:
3097                 return -EOPNOTSUPP;
3098         }
3099
3100         return 0;
3101 }
3102
3103 static int
3104 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3105                            struct cfg80211_csa_settings *params)
3106 {
3107         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3108         struct ieee80211_local *local = sdata->local;
3109         struct ieee80211_channel_switch ch_switch;
3110         struct ieee80211_chanctx_conf *conf;
3111         struct ieee80211_chanctx *chanctx;
3112         u32 changed = 0;
3113         int err;
3114
3115         sdata_assert_lock(sdata);
3116         lockdep_assert_held(&local->mtx);
3117
3118         if (!list_empty(&local->roc_list) || local->scanning)
3119                 return -EBUSY;
3120
3121         if (sdata->wdev.cac_started)
3122                 return -EBUSY;
3123
3124         if (cfg80211_chandef_identical(&params->chandef,
3125                                        &sdata->vif.bss_conf.chandef))
3126                 return -EINVAL;
3127
3128         /* don't allow another channel switch if one is already active. */
3129         if (sdata->vif.csa_active)
3130                 return -EBUSY;
3131
3132         mutex_lock(&local->chanctx_mtx);
3133         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3134                                          lockdep_is_held(&local->chanctx_mtx));
3135         if (!conf) {
3136                 err = -EBUSY;
3137                 goto out;
3138         }
3139
3140         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3141         if (!chanctx) {
3142                 err = -EBUSY;
3143                 goto out;
3144         }
3145
3146         err = drv_pre_channel_switch(sdata, &ch_switch);
3147         if (err)
3148                 goto out;
3149
3150         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3151                                             chanctx->mode,
3152                                             params->radar_required);
3153         if (err)
3154                 goto out;
3155
3156         /* if reservation is invalid then this will fail */
3157         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3158         if (err) {
3159                 ieee80211_vif_unreserve_chanctx(sdata);
3160                 goto out;
3161         }
3162
3163         ch_switch.timestamp = 0;
3164         ch_switch.device_timestamp = 0;
3165         ch_switch.block_tx = params->block_tx;
3166         ch_switch.chandef = params->chandef;
3167         ch_switch.count = params->count;
3168
3169         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3170         if (err) {
3171                 ieee80211_vif_unreserve_chanctx(sdata);
3172                 goto out;
3173         }
3174
3175         sdata->csa_chandef = params->chandef;
3176         sdata->csa_block_tx = params->block_tx;
3177         sdata->vif.csa_active = true;
3178
3179         if (sdata->csa_block_tx)
3180                 ieee80211_stop_vif_queues(local, sdata,
3181                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3182
3183         if (changed) {
3184                 ieee80211_bss_info_change_notify(sdata, changed);
3185                 drv_channel_switch_beacon(sdata, &params->chandef);
3186         } else {
3187                 /* if the beacon didn't change, we can finalize immediately */
3188                 ieee80211_csa_finalize(sdata);
3189         }
3190
3191 out:
3192         mutex_unlock(&local->chanctx_mtx);
3193         return err;
3194 }
3195
3196 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3197                              struct cfg80211_csa_settings *params)
3198 {
3199         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3200         struct ieee80211_local *local = sdata->local;
3201         int err;
3202
3203         mutex_lock(&local->mtx);
3204         err = __ieee80211_channel_switch(wiphy, dev, params);
3205         mutex_unlock(&local->mtx);
3206
3207         return err;
3208 }
3209
3210 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3211                              struct cfg80211_mgmt_tx_params *params,
3212                              u64 *cookie)
3213 {
3214         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3215         struct ieee80211_local *local = sdata->local;
3216         struct sk_buff *skb;
3217         struct sta_info *sta;
3218         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3219         bool need_offchan = false;
3220         u32 flags;
3221         int ret;
3222         u8 *data;
3223
3224         if (params->dont_wait_for_ack)
3225                 flags = IEEE80211_TX_CTL_NO_ACK;
3226         else
3227                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3228                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3229
3230         if (params->no_cck)
3231                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3232
3233         switch (sdata->vif.type) {
3234         case NL80211_IFTYPE_ADHOC:
3235                 if (!sdata->vif.bss_conf.ibss_joined)
3236                         need_offchan = true;
3237                 /* fall through */
3238 #ifdef CONFIG_MAC80211_MESH
3239         case NL80211_IFTYPE_MESH_POINT:
3240                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3241                     !sdata->u.mesh.mesh_id_len)
3242                         need_offchan = true;
3243                 /* fall through */
3244 #endif
3245         case NL80211_IFTYPE_AP:
3246         case NL80211_IFTYPE_AP_VLAN:
3247         case NL80211_IFTYPE_P2P_GO:
3248                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3249                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3250                     !rcu_access_pointer(sdata->bss->beacon))
3251                         need_offchan = true;
3252                 if (!ieee80211_is_action(mgmt->frame_control) ||
3253                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3254                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3255                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3256                         break;
3257                 rcu_read_lock();
3258                 sta = sta_info_get(sdata, mgmt->da);
3259                 rcu_read_unlock();
3260                 if (!sta)
3261                         return -ENOLINK;
3262                 break;
3263         case NL80211_IFTYPE_STATION:
3264         case NL80211_IFTYPE_P2P_CLIENT:
3265                 if (!sdata->u.mgd.associated)
3266                         need_offchan = true;
3267                 break;
3268         case NL80211_IFTYPE_P2P_DEVICE:
3269                 need_offchan = true;
3270                 break;
3271         default:
3272                 return -EOPNOTSUPP;
3273         }
3274
3275         /* configurations requiring offchan cannot work if no channel has been
3276          * specified
3277          */
3278         if (need_offchan && !params->chan)
3279                 return -EINVAL;
3280
3281         mutex_lock(&local->mtx);
3282
3283         /* Check if the operating channel is the requested channel */
3284         if (!need_offchan) {
3285                 struct ieee80211_chanctx_conf *chanctx_conf;
3286
3287                 rcu_read_lock();
3288                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3289
3290                 if (chanctx_conf) {
3291                         need_offchan = params->chan &&
3292                                        (params->chan !=
3293                                         chanctx_conf->def.chan);
3294                 } else if (!params->chan) {
3295                         ret = -EINVAL;
3296                         rcu_read_unlock();
3297                         goto out_unlock;
3298                 } else {
3299                         need_offchan = true;
3300                 }
3301                 rcu_read_unlock();
3302         }
3303
3304         if (need_offchan && !params->offchan) {
3305                 ret = -EBUSY;
3306                 goto out_unlock;
3307         }
3308
3309         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3310         if (!skb) {
3311                 ret = -ENOMEM;
3312                 goto out_unlock;
3313         }
3314         skb_reserve(skb, local->hw.extra_tx_headroom);
3315
3316         data = skb_put(skb, params->len);
3317         memcpy(data, params->buf, params->len);
3318
3319         /* Update CSA counters */
3320         if (sdata->vif.csa_active &&
3321             (sdata->vif.type == NL80211_IFTYPE_AP ||
3322              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3323             params->n_csa_offsets) {
3324                 int i;
3325                 struct beacon_data *beacon = NULL;
3326
3327                 rcu_read_lock();
3328
3329                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3330                         beacon = rcu_dereference(sdata->u.ap.beacon);
3331                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3332                         beacon = rcu_dereference(sdata->u.ibss.presp);
3333                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3334                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3335
3336                 if (beacon)
3337                         for (i = 0; i < params->n_csa_offsets; i++)
3338                                 data[params->csa_offsets[i]] =
3339                                         beacon->csa_current_counter;
3340
3341                 rcu_read_unlock();
3342         }
3343
3344         IEEE80211_SKB_CB(skb)->flags = flags;
3345
3346         skb->dev = sdata->dev;
3347
3348         if (!need_offchan) {
3349                 *cookie = (unsigned long) skb;
3350                 ieee80211_tx_skb(sdata, skb);
3351                 ret = 0;
3352                 goto out_unlock;
3353         }
3354
3355         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3356                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3357         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3358                 IEEE80211_SKB_CB(skb)->hw_queue =
3359                         local->hw.offchannel_tx_hw_queue;
3360
3361         /* This will handle all kinds of coalescing and immediate TX */
3362         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3363                                        params->wait, cookie, skb,
3364                                        IEEE80211_ROC_TYPE_MGMT_TX);
3365         if (ret)
3366                 kfree_skb(skb);
3367  out_unlock:
3368         mutex_unlock(&local->mtx);
3369         return ret;
3370 }
3371
3372 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3373                                          struct wireless_dev *wdev,
3374                                          u64 cookie)
3375 {
3376         struct ieee80211_local *local = wiphy_priv(wiphy);
3377
3378         return ieee80211_cancel_roc(local, cookie, true);
3379 }
3380
3381 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3382                                           struct wireless_dev *wdev,
3383                                           u16 frame_type, bool reg)
3384 {
3385         struct ieee80211_local *local = wiphy_priv(wiphy);
3386
3387         switch (frame_type) {
3388         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3389                 if (reg)
3390                         local->probe_req_reg++;
3391                 else
3392                         local->probe_req_reg--;
3393
3394                 if (!local->open_count)
3395                         break;
3396
3397                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3398                 break;
3399         default:
3400                 break;
3401         }
3402 }
3403
3404 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3405 {
3406         struct ieee80211_local *local = wiphy_priv(wiphy);
3407
3408         if (local->started)
3409                 return -EOPNOTSUPP;
3410
3411         return drv_set_antenna(local, tx_ant, rx_ant);
3412 }
3413
3414 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3415 {
3416         struct ieee80211_local *local = wiphy_priv(wiphy);
3417
3418         return drv_get_antenna(local, tx_ant, rx_ant);
3419 }
3420
3421 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3422                                     struct net_device *dev,
3423                                     struct cfg80211_gtk_rekey_data *data)
3424 {
3425         struct ieee80211_local *local = wiphy_priv(wiphy);
3426         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3427
3428         if (!local->ops->set_rekey_data)
3429                 return -EOPNOTSUPP;
3430
3431         drv_set_rekey_data(local, sdata, data);
3432
3433         return 0;
3434 }
3435
3436 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3437                                   const u8 *peer, u64 *cookie)
3438 {
3439         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3440         struct ieee80211_local *local = sdata->local;
3441         struct ieee80211_qos_hdr *nullfunc;
3442         struct sk_buff *skb;
3443         int size = sizeof(*nullfunc);
3444         __le16 fc;
3445         bool qos;
3446         struct ieee80211_tx_info *info;
3447         struct sta_info *sta;
3448         struct ieee80211_chanctx_conf *chanctx_conf;
3449         enum ieee80211_band band;
3450
3451         rcu_read_lock();
3452         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3453         if (WARN_ON(!chanctx_conf)) {
3454                 rcu_read_unlock();
3455                 return -EINVAL;
3456         }
3457         band = chanctx_conf->def.chan->band;
3458         sta = sta_info_get_bss(sdata, peer);
3459         if (sta) {
3460                 qos = sta->sta.wme;
3461         } else {
3462                 rcu_read_unlock();
3463                 return -ENOLINK;
3464         }
3465
3466         if (qos) {
3467                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3468                                  IEEE80211_STYPE_QOS_NULLFUNC |
3469                                  IEEE80211_FCTL_FROMDS);
3470         } else {
3471                 size -= 2;
3472                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3473                                  IEEE80211_STYPE_NULLFUNC |
3474                                  IEEE80211_FCTL_FROMDS);
3475         }
3476
3477         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3478         if (!skb) {
3479                 rcu_read_unlock();
3480                 return -ENOMEM;
3481         }
3482
3483         skb->dev = dev;
3484
3485         skb_reserve(skb, local->hw.extra_tx_headroom);
3486
3487         nullfunc = (void *) skb_put(skb, size);
3488         nullfunc->frame_control = fc;
3489         nullfunc->duration_id = 0;
3490         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3491         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3492         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3493         nullfunc->seq_ctrl = 0;
3494
3495         info = IEEE80211_SKB_CB(skb);
3496
3497         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3498                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3499
3500         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3501         skb->priority = 7;
3502         if (qos)
3503                 nullfunc->qos_ctrl = cpu_to_le16(7);
3504
3505         local_bh_disable();
3506         ieee80211_xmit(sdata, skb, band);
3507         local_bh_enable();
3508         rcu_read_unlock();
3509
3510         *cookie = (unsigned long) skb;
3511         return 0;
3512 }
3513
3514 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3515                                      struct wireless_dev *wdev,
3516                                      struct cfg80211_chan_def *chandef)
3517 {
3518         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3519         struct ieee80211_local *local = wiphy_priv(wiphy);
3520         struct ieee80211_chanctx_conf *chanctx_conf;
3521         int ret = -ENODATA;
3522
3523         rcu_read_lock();
3524         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3525         if (chanctx_conf) {
3526                 *chandef = sdata->vif.bss_conf.chandef;
3527                 ret = 0;
3528         } else if (local->open_count > 0 &&
3529                    local->open_count == local->monitors &&
3530                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3531                 if (local->use_chanctx)
3532                         *chandef = local->monitor_chandef;
3533                 else
3534                         *chandef = local->_oper_chandef;
3535                 ret = 0;
3536         }
3537         rcu_read_unlock();
3538
3539         return ret;
3540 }
3541
3542 #ifdef CONFIG_PM
3543 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3544 {
3545         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3546 }
3547 #endif
3548
3549 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3550                                  struct net_device *dev,
3551                                  struct cfg80211_qos_map *qos_map)
3552 {
3553         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3554         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3555
3556         if (qos_map) {
3557                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3558                 if (!new_qos_map)
3559                         return -ENOMEM;
3560                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3561         } else {
3562                 /* A NULL qos_map was passed to disable QoS mapping */
3563                 new_qos_map = NULL;
3564         }
3565
3566         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3567         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3568         if (old_qos_map)
3569                 kfree_rcu(old_qos_map, rcu_head);
3570
3571         return 0;
3572 }
3573
3574 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3575                                       struct net_device *dev,
3576                                       struct cfg80211_chan_def *chandef)
3577 {
3578         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3579         int ret;
3580         u32 changed = 0;
3581
3582         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3583         if (ret == 0)
3584                 ieee80211_bss_info_change_notify(sdata, changed);
3585
3586         return ret;
3587 }
3588
3589 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3590                                u8 tsid, const u8 *peer, u8 up,
3591                                u16 admitted_time)
3592 {
3593         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3594         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3595         int ac = ieee802_1d_to_ac[up];
3596
3597         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3598                 return -EOPNOTSUPP;
3599
3600         if (!(sdata->wmm_acm & BIT(up)))
3601                 return -EINVAL;
3602
3603         if (ifmgd->tx_tspec[ac].admitted_time)
3604                 return -EBUSY;
3605
3606         if (admitted_time) {
3607                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3608                 ifmgd->tx_tspec[ac].tsid = tsid;
3609                 ifmgd->tx_tspec[ac].up = up;
3610         }
3611
3612         return 0;
3613 }
3614
3615 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3616                                u8 tsid, const u8 *peer)
3617 {
3618         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3619         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3620         struct ieee80211_local *local = wiphy_priv(wiphy);
3621         int ac;
3622
3623         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3624                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3625
3626                 /* skip unused entries */
3627                 if (!tx_tspec->admitted_time)
3628                         continue;
3629
3630                 if (tx_tspec->tsid != tsid)
3631                         continue;
3632
3633                 /* due to this new packets will be reassigned to non-ACM ACs */
3634                 tx_tspec->up = -1;
3635
3636                 /* Make sure that all packets have been sent to avoid to
3637                  * restore the QoS params on packets that are still on the
3638                  * queues.
3639                  */
3640                 synchronize_net();
3641                 ieee80211_flush_queues(local, sdata);
3642
3643                 /* restore the normal QoS parameters
3644                  * (unconditionally to avoid races)
3645                  */
3646                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3647                 tx_tspec->downgraded = false;
3648                 ieee80211_sta_handle_tspec_ac_params(sdata);
3649
3650                 /* finally clear all the data */
3651                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3652
3653                 return 0;
3654         }
3655
3656         return -ENOENT;
3657 }
3658
3659 const struct cfg80211_ops mac80211_config_ops = {
3660         .add_virtual_intf = ieee80211_add_iface,
3661         .del_virtual_intf = ieee80211_del_iface,
3662         .change_virtual_intf = ieee80211_change_iface,
3663         .start_p2p_device = ieee80211_start_p2p_device,
3664         .stop_p2p_device = ieee80211_stop_p2p_device,
3665         .add_key = ieee80211_add_key,
3666         .del_key = ieee80211_del_key,
3667         .get_key = ieee80211_get_key,
3668         .set_default_key = ieee80211_config_default_key,
3669         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3670         .start_ap = ieee80211_start_ap,
3671         .change_beacon = ieee80211_change_beacon,
3672         .stop_ap = ieee80211_stop_ap,
3673         .add_station = ieee80211_add_station,
3674         .del_station = ieee80211_del_station,
3675         .change_station = ieee80211_change_station,
3676         .get_station = ieee80211_get_station,
3677         .dump_station = ieee80211_dump_station,
3678         .dump_survey = ieee80211_dump_survey,
3679 #ifdef CONFIG_MAC80211_MESH
3680         .add_mpath = ieee80211_add_mpath,
3681         .del_mpath = ieee80211_del_mpath,
3682         .change_mpath = ieee80211_change_mpath,
3683         .get_mpath = ieee80211_get_mpath,
3684         .dump_mpath = ieee80211_dump_mpath,
3685         .get_mpp = ieee80211_get_mpp,
3686         .dump_mpp = ieee80211_dump_mpp,
3687         .update_mesh_config = ieee80211_update_mesh_config,
3688         .get_mesh_config = ieee80211_get_mesh_config,
3689         .join_mesh = ieee80211_join_mesh,
3690         .leave_mesh = ieee80211_leave_mesh,
3691 #endif
3692         .change_bss = ieee80211_change_bss,
3693         .set_txq_params = ieee80211_set_txq_params,
3694         .set_monitor_channel = ieee80211_set_monitor_channel,
3695         .suspend = ieee80211_suspend,
3696         .resume = ieee80211_resume,
3697         .scan = ieee80211_scan,
3698         .sched_scan_start = ieee80211_sched_scan_start,
3699         .sched_scan_stop = ieee80211_sched_scan_stop,
3700         .auth = ieee80211_auth,
3701         .assoc = ieee80211_assoc,
3702         .deauth = ieee80211_deauth,
3703         .disassoc = ieee80211_disassoc,
3704         .join_ibss = ieee80211_join_ibss,
3705         .leave_ibss = ieee80211_leave_ibss,
3706         .set_mcast_rate = ieee80211_set_mcast_rate,
3707         .set_wiphy_params = ieee80211_set_wiphy_params,
3708         .set_tx_power = ieee80211_set_tx_power,
3709         .get_tx_power = ieee80211_get_tx_power,
3710         .set_wds_peer = ieee80211_set_wds_peer,
3711         .rfkill_poll = ieee80211_rfkill_poll,
3712         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3713         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3714         .set_power_mgmt = ieee80211_set_power_mgmt,
3715         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3716         .remain_on_channel = ieee80211_remain_on_channel,
3717         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3718         .mgmt_tx = ieee80211_mgmt_tx,
3719         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3720         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3721         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3722         .set_antenna = ieee80211_set_antenna,
3723         .get_antenna = ieee80211_get_antenna,
3724         .set_rekey_data = ieee80211_set_rekey_data,
3725         .tdls_oper = ieee80211_tdls_oper,
3726         .tdls_mgmt = ieee80211_tdls_mgmt,
3727         .probe_client = ieee80211_probe_client,
3728         .set_noack_map = ieee80211_set_noack_map,
3729 #ifdef CONFIG_PM
3730         .set_wakeup = ieee80211_set_wakeup,
3731 #endif
3732         .get_channel = ieee80211_cfg_get_channel,
3733         .start_radar_detection = ieee80211_start_radar_detection,
3734         .channel_switch = ieee80211_channel_switch,
3735         .set_qos_map = ieee80211_set_qos_map,
3736         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3737         .add_tx_ts = ieee80211_add_tx_ts,
3738         .del_tx_ts = ieee80211_del_tx_ts,
3739 };