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                                                 unsigned char name_assign_type,
  28                                                 enum nl80211_iftype type,
  29                                                 u32 *flags,
  30                                                 struct vif_params *params)
  31 {
  32         struct ieee80211_local *local = wiphy_priv(wiphy);
  33         struct wireless_dev *wdev;
  34         struct ieee80211_sub_if_data *sdata;
  35         int err;
  36
  37         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
  38         if (err)
  39                 return ERR_PTR(err);
  40
  41         if (type == NL80211_IFTYPE_MONITOR && flags) {
  42                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  43                 sdata->u.mntr_flags = *flags;
  44         }
  45
  46         return wdev;
  47 }
  48
  49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  50 {
  51         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  52
  53         return 0;
  54 }
  55
  56 static int ieee80211_change_iface(struct wiphy *wiphy,
  57                                   struct net_device *dev,
  58                                   enum nl80211_iftype type, u32 *flags,
  59                                   struct vif_params *params)
  60 {
  61         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  62         int ret;
  63
  64         ret = ieee80211_if_change_type(sdata, type);
  65         if (ret)
  66                 return ret;
  67
  68         if (type == NL80211_IFTYPE_AP_VLAN &&
  69             params && params->use_4addr == 0)
  70                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  71         else if (type == NL80211_IFTYPE_STATION &&
  72                  params && params->use_4addr >= 0)
  73                 sdata->u.mgd.use_4addr = params->use_4addr;
  74
  75         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  76                 struct ieee80211_local *local = sdata->local;
  77
  78                 if (ieee80211_sdata_running(sdata)) {
  79                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  80                                    MONITOR_FLAG_ACTIVE;
  81
  82                         /*
  83                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  84                          * MONITOR_FLAG_ACTIVE to be changed while the
  85                          * interface is up.
  86                          * Else we would need to add a lot of cruft
  87                          * to update everything:
  88                          *      cooked_mntrs, monitor and all fif_* counters
  89                          *      reconfigure hardware
  90                          */
  91                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  92                                 return -EBUSY;
  93
  94                         ieee80211_adjust_monitor_flags(sdata, -1);
  95                         sdata->u.mntr_flags = *flags;
  96                         ieee80211_adjust_monitor_flags(sdata, 1);
  97
  98                         ieee80211_configure_filter(local);
  99                 } else {
 100                         /*
 101                          * Because the interface is down, ieee80211_do_stop
 102                          * and ieee80211_do_open take care of "everything"
 103                          * mentioned in the comment above.
 104                          */
 105                         sdata->u.mntr_flags = *flags;
 106                 }
 107         }
 108
 109         return 0;
 110 }
 111
 112 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 113                                       struct wireless_dev *wdev)
 114 {
 115         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 116         int ret;
 117
 118         mutex_lock(&sdata->local->chanctx_mtx);
 119         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 120         mutex_unlock(&sdata->local->chanctx_mtx);
 121         if (ret < 0)
 122                 return ret;
 123
 124         return ieee80211_do_open(wdev, true);
 125 }
 126
 127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 128                                       struct wireless_dev *wdev)
 129 {
 130         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 131 }
 132
 133 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 134                                   struct net_device *dev,
 135                                   u16 noack_map)
 136 {
 137         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 138
 139         sdata->noack_map = noack_map;
 140         return 0;
 141 }
 142
 143 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 144                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 145                              struct key_params *params)
 146 {
 147         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 148         struct ieee80211_local *local = sdata->local;
 149         struct sta_info *sta = NULL;
 150         const struct ieee80211_cipher_scheme *cs = NULL;
 151         struct ieee80211_key *key;
 152         int err;
 153
 154         if (!ieee80211_sdata_running(sdata))
 155                 return -ENETDOWN;
 156
 157         /* reject WEP and TKIP keys if WEP failed to initialize */
 158         switch (params->cipher) {
 159         case WLAN_CIPHER_SUITE_WEP40:
 160         case WLAN_CIPHER_SUITE_TKIP:
 161         case WLAN_CIPHER_SUITE_WEP104:
 162                 if (IS_ERR(local->wep_tx_tfm))
 163                         return -EINVAL;
 164                 break;
 165         case WLAN_CIPHER_SUITE_CCMP:
 166         case WLAN_CIPHER_SUITE_CCMP_256:
 167         case WLAN_CIPHER_SUITE_AES_CMAC:
 168         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 169         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 170         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 171         case WLAN_CIPHER_SUITE_GCMP:
 172         case WLAN_CIPHER_SUITE_GCMP_256:
 173                 break;
 174         default:
 175                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 176                 break;
 177         }
 178
 179         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 180                                   params->key, params->seq_len, params->seq,
 181                                   cs);
 182         if (IS_ERR(key))
 183                 return PTR_ERR(key);
 184
 185         if (pairwise)
 186                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 187
 188         mutex_lock(&local->sta_mtx);
 189
 190         if (mac_addr) {
 191                 if (ieee80211_vif_is_mesh(&sdata->vif))
 192                         sta = sta_info_get(sdata, mac_addr);
 193                 else
 194                         sta = sta_info_get_bss(sdata, mac_addr);
 195                 /*
 196                  * The ASSOC test makes sure the driver is ready to
 197                  * receive the key. When wpa_supplicant has roamed
 198                  * using FT, it attempts to set the key before
 199                  * association has completed, this rejects that attempt
 200                  * so it will set the key again after association.
 201                  *
 202                  * TODO: accept the key if we have a station entry and
 203                  *       add it to the device after the station.
 204                  */
 205                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 206                         ieee80211_key_free_unused(key);
 207                         err = -ENOENT;
 208                         goto out_unlock;
 209                 }
 210         }
 211
 212         switch (sdata->vif.type) {
 213         case NL80211_IFTYPE_STATION:
 214                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 215                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 216                 break;
 217         case NL80211_IFTYPE_AP:
 218         case NL80211_IFTYPE_AP_VLAN:
 219                 /* Keys without a station are used for TX only */
 220                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 221                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 222                 break;
 223         case NL80211_IFTYPE_ADHOC:
 224                 /* no MFP (yet) */
 225                 break;
 226         case NL80211_IFTYPE_MESH_POINT:
 227 #ifdef CONFIG_MAC80211_MESH
 228                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 229                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 230                 break;
 231 #endif
 232         case NL80211_IFTYPE_WDS:
 233         case NL80211_IFTYPE_MONITOR:
 234         case NL80211_IFTYPE_P2P_DEVICE:
 235         case NL80211_IFTYPE_UNSPECIFIED:
 236         case NUM_NL80211_IFTYPES:
 237         case NL80211_IFTYPE_P2P_CLIENT:
 238         case NL80211_IFTYPE_P2P_GO:
 239         case NL80211_IFTYPE_OCB:
 240                 /* shouldn't happen */
 241                 WARN_ON_ONCE(1);
 242                 break;
 243         }
 244
 245         if (sta)
 246                 sta->cipher_scheme = cs;
 247
 248         err = ieee80211_key_link(key, sdata, sta);
 249
 250  out_unlock:
 251         mutex_unlock(&local->sta_mtx);
 252
 253         return err;
 254 }
 255
 256 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 257                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 258 {
 259         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 260         struct ieee80211_local *local = sdata->local;
 261         struct sta_info *sta;
 262         struct ieee80211_key *key = NULL;
 263         int ret;
 264
 265         mutex_lock(&local->sta_mtx);
 266         mutex_lock(&local->key_mtx);
 267
 268         if (mac_addr) {
 269                 ret = -ENOENT;
 270
 271                 sta = sta_info_get_bss(sdata, mac_addr);
 272                 if (!sta)
 273                         goto out_unlock;
 274
 275                 if (pairwise)
 276                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 277                 else
 278                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 279         } else
 280                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 281
 282         if (!key) {
 283                 ret = -ENOENT;
 284                 goto out_unlock;
 285         }
 286
 287         ieee80211_key_free(key, true);
 288
 289         ret = 0;
 290  out_unlock:
 291         mutex_unlock(&local->key_mtx);
 292         mutex_unlock(&local->sta_mtx);
 293
 294         return ret;
 295 }
 296
 297 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 298                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 299                              void *cookie,
 300                              void (*callback)(void *cookie,
 301                                               struct key_params *params))
 302 {
 303         struct ieee80211_sub_if_data *sdata;
 304         struct sta_info *sta = NULL;
 305         u8 seq[6] = {0};
 306         struct key_params params;
 307         struct ieee80211_key *key = NULL;
 308         u64 pn64;
 309         u32 iv32;
 310         u16 iv16;
 311         int err = -ENOENT;
 312
 313         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 314
 315         rcu_read_lock();
 316
 317         if (mac_addr) {
 318                 sta = sta_info_get_bss(sdata, mac_addr);
 319                 if (!sta)
 320                         goto out;
 321
 322                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 323                         key = rcu_dereference(sta->ptk[key_idx]);
 324                 else if (!pairwise &&
 325                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 326                         key = rcu_dereference(sta->gtk[key_idx]);
 327         } else
 328                 key = rcu_dereference(sdata->keys[key_idx]);
 329
 330         if (!key)
 331                 goto out;
 332
 333         memset(&params, 0, sizeof(params));
 334
 335         params.cipher = key->conf.cipher;
 336
 337         switch (key->conf.cipher) {
 338         case WLAN_CIPHER_SUITE_TKIP:
 339                 iv32 = key->u.tkip.tx.iv32;
 340                 iv16 = key->u.tkip.tx.iv16;
 341
 342                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 343                         drv_get_tkip_seq(sdata->local,
 344                                          key->conf.hw_key_idx,
 345                                          &iv32, &iv16);
 346
 347                 seq[0] = iv16 & 0xff;
 348                 seq[1] = (iv16 >> 8) & 0xff;
 349                 seq[2] = iv32 & 0xff;
 350                 seq[3] = (iv32 >> 8) & 0xff;
 351                 seq[4] = (iv32 >> 16) & 0xff;
 352                 seq[5] = (iv32 >> 24) & 0xff;
 353                 params.seq = seq;
 354                 params.seq_len = 6;
 355                 break;
 356         case WLAN_CIPHER_SUITE_CCMP:
 357         case WLAN_CIPHER_SUITE_CCMP_256:
 358                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 359                 seq[0] = pn64;
 360                 seq[1] = pn64 >> 8;
 361                 seq[2] = pn64 >> 16;
 362                 seq[3] = pn64 >> 24;
 363                 seq[4] = pn64 >> 32;
 364                 seq[5] = pn64 >> 40;
 365                 params.seq = seq;
 366                 params.seq_len = 6;
 367                 break;
 368         case WLAN_CIPHER_SUITE_AES_CMAC:
 369         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 370                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 371                 seq[0] = pn64;
 372                 seq[1] = pn64 >> 8;
 373                 seq[2] = pn64 >> 16;
 374                 seq[3] = pn64 >> 24;
 375                 seq[4] = pn64 >> 32;
 376                 seq[5] = pn64 >> 40;
 377                 params.seq = seq;
 378                 params.seq_len = 6;
 379                 break;
 380         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 381         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 382                 pn64 = atomic64_read(&key->u.aes_gmac.tx_pn);
 383                 seq[0] = pn64;
 384                 seq[1] = pn64 >> 8;
 385                 seq[2] = pn64 >> 16;
 386                 seq[3] = pn64 >> 24;
 387                 seq[4] = pn64 >> 32;
 388                 seq[5] = pn64 >> 40;
 389                 params.seq = seq;
 390                 params.seq_len = 6;
 391                 break;
 392         case WLAN_CIPHER_SUITE_GCMP:
 393         case WLAN_CIPHER_SUITE_GCMP_256:
 394                 pn64 = atomic64_read(&key->u.gcmp.tx_pn);
 395                 seq[0] = pn64;
 396                 seq[1] = pn64 >> 8;
 397                 seq[2] = pn64 >> 16;
 398                 seq[3] = pn64 >> 24;
 399                 seq[4] = pn64 >> 32;
 400                 seq[5] = pn64 >> 40;
 401                 params.seq = seq;
 402                 params.seq_len = 6;
 403                 break;
 404         }
 405
 406         params.key = key->conf.key;
 407         params.key_len = key->conf.keylen;
 408
 409         callback(cookie, &params);
 410         err = 0;
 411
 412  out:
 413         rcu_read_unlock();
 414         return err;
 415 }
 416
 417 static int ieee80211_config_default_key(struct wiphy *wiphy,
 418                                         struct net_device *dev,
 419                                         u8 key_idx, bool uni,
 420                                         bool multi)
 421 {
 422         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 423
 424         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 425
 426         return 0;
 427 }
 428
 429 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 430                                              struct net_device *dev,
 431                                              u8 key_idx)
 432 {
 433         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 434
 435         ieee80211_set_default_mgmt_key(sdata, key_idx);
 436
 437         return 0;
 438 }
 439
 440 void sta_set_rate_info_tx(struct sta_info *sta,
 441                           const struct ieee80211_tx_rate *rate,
 442                           struct rate_info *rinfo)
 443 {
 444         rinfo->flags = 0;
 445         if (rate->flags & IEEE80211_TX_RC_MCS) {
 446                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 447                 rinfo->mcs = rate->idx;
 448         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 449                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 450                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 451                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 452         } else {
 453                 struct ieee80211_supported_band *sband;
 454                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 455                 u16 brate;
 456
 457                 sband = sta->local->hw.wiphy->bands[
 458                                 ieee80211_get_sdata_band(sta->sdata)];
 459                 brate = sband->bitrates[rate->idx].bitrate;
 460                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 461         }
 462         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 463                 rinfo->bw = RATE_INFO_BW_40;
 464         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 465                 rinfo->bw = RATE_INFO_BW_80;
 466         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 467                 rinfo->bw = RATE_INFO_BW_160;
 468         else
 469                 rinfo->bw = RATE_INFO_BW_20;
 470         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 471                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 472 }
 473
 474 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 475 {
 476         rinfo->flags = 0;
 477
 478         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 479                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 480                 rinfo->mcs = sta->last_rx_rate_idx;
 481         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 482                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 483                 rinfo->nss = sta->last_rx_rate_vht_nss;
 484                 rinfo->mcs = sta->last_rx_rate_idx;
 485         } else {
 486                 struct ieee80211_supported_band *sband;
 487                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 488                 u16 brate;
 489
 490                 sband = sta->local->hw.wiphy->bands[
 491                                 ieee80211_get_sdata_band(sta->sdata)];
 492                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 493                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 494         }
 495
 496         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 497                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 498
 499         if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
 500                 rinfo->bw = RATE_INFO_BW_5;
 501         else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
 502                 rinfo->bw = RATE_INFO_BW_10;
 503         else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 504                 rinfo->bw = RATE_INFO_BW_40;
 505         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 506                 rinfo->bw = RATE_INFO_BW_80;
 507         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 508                 rinfo->bw = RATE_INFO_BW_160;
 509         else
 510                 rinfo->bw = RATE_INFO_BW_20;
 511 }
 512
 513 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 514                                   int idx, u8 *mac, struct station_info *sinfo)
 515 {
 516         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 517         struct ieee80211_local *local = sdata->local;
 518         struct sta_info *sta;
 519         int ret = -ENOENT;
 520
 521         mutex_lock(&local->sta_mtx);
 522
 523         sta = sta_info_get_by_idx(sdata, idx);
 524         if (sta) {
 525                 ret = 0;
 526                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 527                 sta_set_sinfo(sta, sinfo);
 528         }
 529
 530         mutex_unlock(&local->sta_mtx);
 531
 532         return ret;
 533 }
 534
 535 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 536                                  int idx, struct survey_info *survey)
 537 {
 538         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 539
 540         return drv_get_survey(local, idx, survey);
 541 }
 542
 543 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 544                                  const u8 *mac, struct station_info *sinfo)
 545 {
 546         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 547         struct ieee80211_local *local = sdata->local;
 548         struct sta_info *sta;
 549         int ret = -ENOENT;
 550
 551         mutex_lock(&local->sta_mtx);
 552
 553         sta = sta_info_get_bss(sdata, mac);
 554         if (sta) {
 555                 ret = 0;
 556                 sta_set_sinfo(sta, sinfo);
 557         }
 558
 559         mutex_unlock(&local->sta_mtx);
 560
 561         return ret;
 562 }
 563
 564 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 565                                          struct cfg80211_chan_def *chandef)
 566 {
 567         struct ieee80211_local *local = wiphy_priv(wiphy);
 568         struct ieee80211_sub_if_data *sdata;
 569         int ret = 0;
 570
 571         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 572                 return 0;
 573
 574         mutex_lock(&local->mtx);
 575         mutex_lock(&local->iflist_mtx);
 576         if (local->use_chanctx) {
 577                 sdata = rcu_dereference_protected(
 578                                 local->monitor_sdata,
 579                                 lockdep_is_held(&local->iflist_mtx));
 580                 if (sdata) {
 581                         ieee80211_vif_release_channel(sdata);
 582                         ret = ieee80211_vif_use_channel(sdata, chandef,
 583                                         IEEE80211_CHANCTX_EXCLUSIVE);
 584                 }
 585         } else if (local->open_count == local->monitors) {
 586                 local->_oper_chandef = *chandef;
 587                 ieee80211_hw_config(local, 0);
 588         }
 589
 590         if (ret == 0)
 591                 local->monitor_chandef = *chandef;
 592         mutex_unlock(&local->iflist_mtx);
 593         mutex_unlock(&local->mtx);
 594
 595         return ret;
 596 }
 597
 598 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 599                                     const u8 *resp, size_t resp_len,
 600                                     const struct ieee80211_csa_settings *csa)
 601 {
 602         struct probe_resp *new, *old;
 603
 604         if (!resp || !resp_len)
 605                 return 1;
 606
 607         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 608
 609         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 610         if (!new)
 611                 return -ENOMEM;
 612
 613         new->len = resp_len;
 614         memcpy(new->data, resp, resp_len);
 615
 616         if (csa)
 617                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 618                        csa->n_counter_offsets_presp *
 619                        sizeof(new->csa_counter_offsets[0]));
 620
 621         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 622         if (old)
 623                 kfree_rcu(old, rcu_head);
 624
 625         return 0;
 626 }
 627
 628 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 629                                    struct cfg80211_beacon_data *params,
 630                                    const struct ieee80211_csa_settings *csa)
 631 {
 632         struct beacon_data *new, *old;
 633         int new_head_len, new_tail_len;
 634         int size, err;
 635         u32 changed = BSS_CHANGED_BEACON;
 636
 637         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 638
 639
 640         /* Need to have a beacon head if we don't have one yet */
 641         if (!params->head && !old)
 642                 return -EINVAL;
 643
 644         /* new or old head? */
 645         if (params->head)
 646                 new_head_len = params->head_len;
 647         else
 648                 new_head_len = old->head_len;
 649
 650         /* new or old tail? */
 651         if (params->tail || !old)
 652                 /* params->tail_len will be zero for !params->tail */
 653                 new_tail_len = params->tail_len;
 654         else
 655                 new_tail_len = old->tail_len;
 656
 657         size = sizeof(*new) + new_head_len + new_tail_len;
 658
 659         new = kzalloc(size, GFP_KERNEL);
 660         if (!new)
 661                 return -ENOMEM;
 662
 663         /* start filling the new info now */
 664
 665         /*
 666          * pointers go into the block we allocated,
 667          * memory is | beacon_data | head | tail |
 668          */
 669         new->head = ((u8 *) new) + sizeof(*new);
 670         new->tail = new->head + new_head_len;
 671         new->head_len = new_head_len;
 672         new->tail_len = new_tail_len;
 673
 674         if (csa) {
 675                 new->csa_current_counter = csa->count;
 676                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 677                        csa->n_counter_offsets_beacon *
 678                        sizeof(new->csa_counter_offsets[0]));
 679         }
 680
 681         /* copy in head */
 682         if (params->head)
 683                 memcpy(new->head, params->head, new_head_len);
 684         else
 685                 memcpy(new->head, old->head, new_head_len);
 686
 687         /* copy in optional tail */
 688         if (params->tail)
 689                 memcpy(new->tail, params->tail, new_tail_len);
 690         else
 691                 if (old)
 692                         memcpy(new->tail, old->tail, new_tail_len);
 693
 694         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 695                                        params->probe_resp_len, csa);
 696         if (err < 0)
 697                 return err;
 698         if (err == 0)
 699                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 700
 701         rcu_assign_pointer(sdata->u.ap.beacon, new);
 702
 703         if (old)
 704                 kfree_rcu(old, rcu_head);
 705
 706         return changed;
 707 }
 708
 709 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 710                               struct cfg80211_ap_settings *params)
 711 {
 712         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 713         struct ieee80211_local *local = sdata->local;
 714         struct beacon_data *old;
 715         struct ieee80211_sub_if_data *vlan;
 716         u32 changed = BSS_CHANGED_BEACON_INT |
 717                       BSS_CHANGED_BEACON_ENABLED |
 718                       BSS_CHANGED_BEACON |
 719                       BSS_CHANGED_SSID |
 720                       BSS_CHANGED_P2P_PS |
 721                       BSS_CHANGED_TXPOWER;
 722         int err;
 723
 724         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 725         if (old)
 726                 return -EALREADY;
 727
 728         switch (params->smps_mode) {
 729         case NL80211_SMPS_OFF:
 730                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 731                 break;
 732         case NL80211_SMPS_STATIC:
 733                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 734                 break;
 735         case NL80211_SMPS_DYNAMIC:
 736                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 737                 break;
 738         default:
 739                 return -EINVAL;
 740         }
 741         sdata->needed_rx_chains = sdata->local->rx_chains;
 742
 743         mutex_lock(&local->mtx);
 744         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 745                                         IEEE80211_CHANCTX_SHARED);
 746         if (!err)
 747                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 748         mutex_unlock(&local->mtx);
 749         if (err)
 750                 return err;
 751
 752         /*
 753          * Apply control port protocol, this allows us to
 754          * not encrypt dynamic WEP control frames.
 755          */
 756         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 757         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 758         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 759                                                         &params->crypto,
 760                                                         sdata->vif.type);
 761
 762         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 763                 vlan->control_port_protocol =
 764                         params->crypto.control_port_ethertype;
 765                 vlan->control_port_no_encrypt =
 766                         params->crypto.control_port_no_encrypt;
 767                 vlan->encrypt_headroom =
 768                         ieee80211_cs_headroom(sdata->local,
 769                                               &params->crypto,
 770                                               vlan->vif.type);
 771         }
 772
 773         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 774         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 775         sdata->vif.bss_conf.enable_beacon = true;
 776
 777         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 778         if (params->ssid_len)
 779                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 780                        params->ssid_len);
 781         sdata->vif.bss_conf.hidden_ssid =
 782                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 783
 784         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 785                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 786         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 787                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 788         if (params->p2p_opp_ps)
 789                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 790                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 791
 792         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 793         if (err < 0) {
 794                 ieee80211_vif_release_channel(sdata);
 795                 return err;
 796         }
 797         changed |= err;
 798
 799         err = drv_start_ap(sdata->local, sdata);
 800         if (err) {
 801                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 802
 803                 if (old)
 804                         kfree_rcu(old, rcu_head);
 805                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 806                 ieee80211_vif_release_channel(sdata);
 807                 return err;
 808         }
 809
 810         ieee80211_recalc_dtim(local, sdata);
 811         ieee80211_bss_info_change_notify(sdata, changed);
 812
 813         netif_carrier_on(dev);
 814         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 815                 netif_carrier_on(vlan->dev);
 816
 817         return 0;
 818 }
 819
 820 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 821                                    struct cfg80211_beacon_data *params)
 822 {
 823         struct ieee80211_sub_if_data *sdata;
 824         struct beacon_data *old;
 825         int err;
 826
 827         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 828         sdata_assert_lock(sdata);
 829
 830         /* don't allow changing the beacon while CSA is in place - offset
 831          * of channel switch counter may change
 832          */
 833         if (sdata->vif.csa_active)
 834                 return -EBUSY;
 835
 836         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 837         if (!old)
 838                 return -ENOENT;
 839
 840         err = ieee80211_assign_beacon(sdata, params, NULL);
 841         if (err < 0)
 842                 return err;
 843         ieee80211_bss_info_change_notify(sdata, err);
 844         return 0;
 845 }
 846
 847 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 848 {
 849         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 850         struct ieee80211_sub_if_data *vlan;
 851         struct ieee80211_local *local = sdata->local;
 852         struct beacon_data *old_beacon;
 853         struct probe_resp *old_probe_resp;
 854         struct cfg80211_chan_def chandef;
 855
 856         sdata_assert_lock(sdata);
 857
 858         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 859         if (!old_beacon)
 860                 return -ENOENT;
 861         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 862
 863         /* abort any running channel switch */
 864         mutex_lock(&local->mtx);
 865         sdata->vif.csa_active = false;
 866         if (sdata->csa_block_tx) {
 867                 ieee80211_wake_vif_queues(local, sdata,
 868                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 869                 sdata->csa_block_tx = false;
 870         }
 871
 872         mutex_unlock(&local->mtx);
 873
 874         kfree(sdata->u.ap.next_beacon);
 875         sdata->u.ap.next_beacon = NULL;
 876
 877         /* turn off carrier for this interface and dependent VLANs */
 878         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 879                 netif_carrier_off(vlan->dev);
 880         netif_carrier_off(dev);
 881
 882         /* remove beacon and probe response */
 883         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 884         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 885         kfree_rcu(old_beacon, rcu_head);
 886         if (old_probe_resp)
 887                 kfree_rcu(old_probe_resp, rcu_head);
 888         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 889
 890         __sta_info_flush(sdata, true);
 891         ieee80211_free_keys(sdata, true);
 892
 893         sdata->vif.bss_conf.enable_beacon = false;
 894         sdata->vif.bss_conf.ssid_len = 0;
 895         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 896         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 897
 898         if (sdata->wdev.cac_started) {
 899                 chandef = sdata->vif.bss_conf.chandef;
 900                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 901                 cfg80211_cac_event(sdata->dev, &chandef,
 902                                    NL80211_RADAR_CAC_ABORTED,
 903                                    GFP_KERNEL);
 904         }
 905
 906         drv_stop_ap(sdata->local, sdata);
 907
 908         /* free all potentially still buffered bcast frames */
 909         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 910         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 911
 912         mutex_lock(&local->mtx);
 913         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 914         ieee80211_vif_release_channel(sdata);
 915         mutex_unlock(&local->mtx);
 916
 917         return 0;
 918 }
 919
 920 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 921 struct iapp_layer2_update {
 922         u8 da[ETH_ALEN];        /* broadcast */
 923         u8 sa[ETH_ALEN];        /* STA addr */
 924         __be16 len;             /* 6 */
 925         u8 dsap;                /* 0 */
 926         u8 ssap;                /* 0 */
 927         u8 control;
 928         u8 xid_info[3];
 929 } __packed;
 930
 931 static void ieee80211_send_layer2_update(struct sta_info *sta)
 932 {
 933         struct iapp_layer2_update *msg;
 934         struct sk_buff *skb;
 935
 936         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 937          * bridge devices */
 938
 939         skb = dev_alloc_skb(sizeof(*msg));
 940         if (!skb)
 941                 return;
 942         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 943
 944         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 945          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 946
 947         eth_broadcast_addr(msg->da);
 948         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 949         msg->len = htons(6);
 950         msg->dsap = 0;
 951         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 952         msg->control = 0xaf;    /* XID response lsb.1111F101.
 953                                  * F=0 (no poll command; unsolicited frame) */
 954         msg->xid_info[0] = 0x81;        /* XID format identifier */
 955         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 956         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 957
 958         skb->dev = sta->sdata->dev;
 959         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 960         memset(skb->cb, 0, sizeof(skb->cb));
 961         netif_rx_ni(skb);
 962 }
 963
 964 static int sta_apply_auth_flags(struct ieee80211_local *local,
 965                                 struct sta_info *sta,
 966                                 u32 mask, u32 set)
 967 {
 968         int ret;
 969
 970         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 971             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 972             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 973                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 974                 if (ret)
 975                         return ret;
 976         }
 977
 978         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 979             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 980             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 981                 /*
 982                  * When peer becomes associated, init rate control as
 983                  * well. Some drivers require rate control initialized
 984                  * before drv_sta_state() is called.
 985                  */
 986                 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 987                         rate_control_rate_init(sta);
 988
 989                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 990                 if (ret)
 991                         return ret;
 992         }
 993
 994         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 995                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 996                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 997                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 998                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 999                 else
1000                         ret = 0;
1001                 if (ret)
1002                         return ret;
1003         }
1004
1005         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1006             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1007             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1008                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1009                 if (ret)
1010                         return ret;
1011         }
1012
1013         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1014             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1015             test_sta_flag(sta, WLAN_STA_AUTH)) {
1016                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1017                 if (ret)
1018                         return ret;
1019         }
1020
1021         return 0;
1022 }
1023
1024 static int sta_apply_parameters(struct ieee80211_local *local,
1025                                 struct sta_info *sta,
1026                                 struct station_parameters *params)
1027 {
1028         int ret = 0;
1029         struct ieee80211_supported_band *sband;
1030         struct ieee80211_sub_if_data *sdata = sta->sdata;
1031         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1032         u32 mask, set;
1033
1034         sband = local->hw.wiphy->bands[band];
1035
1036         mask = params->sta_flags_mask;
1037         set = params->sta_flags_set;
1038
1039         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1040                 /*
1041                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1042                  * API but must follow AUTHENTICATED for driver state.
1043                  */
1044                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1045                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1046                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1047                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1048         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1049                 /*
1050                  * TDLS -- everything follows authorized, but
1051                  * only becoming authorized is possible, not
1052                  * going back
1053                  */
1054                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1055                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1056                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1057                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1058                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1059                 }
1060         }
1061
1062         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1063             local->hw.queues >= IEEE80211_NUM_ACS)
1064                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1065
1066         /* auth flags will be set later for TDLS stations */
1067         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1068                 ret = sta_apply_auth_flags(local, sta, mask, set);
1069                 if (ret)
1070                         return ret;
1071         }
1072
1073         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1074                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1075                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1076                 else
1077                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1078         }
1079
1080         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1081                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1082                 if (set & BIT(NL80211_STA_FLAG_MFP))
1083                         set_sta_flag(sta, WLAN_STA_MFP);
1084                 else
1085                         clear_sta_flag(sta, WLAN_STA_MFP);
1086         }
1087
1088         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1089                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1090                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1091                 else
1092                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1093         }
1094
1095         /* mark TDLS channel switch support, if the AP allows it */
1096         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1097             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1098             params->ext_capab_len >= 4 &&
1099             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1100                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1101
1102         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1103                 sta->sta.uapsd_queues = params->uapsd_queues;
1104                 sta->sta.max_sp = params->max_sp;
1105         }
1106
1107         /*
1108          * cfg80211 validates this (1-2007) and allows setting the AID
1109          * only when creating a new station entry
1110          */
1111         if (params->aid)
1112                 sta->sta.aid = params->aid;
1113
1114         /*
1115          * Some of the following updates would be racy if called on an
1116          * existing station, via ieee80211_change_station(). However,
1117          * all such changes are rejected by cfg80211 except for updates
1118          * changing the supported rates on an existing but not yet used
1119          * TDLS peer.
1120          */
1121
1122         if (params->listen_interval >= 0)
1123                 sta->listen_interval = params->listen_interval;
1124
1125         if (params->supported_rates) {
1126                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1127                                          sband, params->supported_rates,
1128                                          params->supported_rates_len,
1129                                          &sta->sta.supp_rates[band]);
1130         }
1131
1132         if (params->ht_capa)
1133                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1134                                                   params->ht_capa, sta);
1135
1136         if (params->vht_capa)
1137                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1138                                                     params->vht_capa, sta);
1139
1140         if (params->opmode_notif_used) {
1141                 /* returned value is only needed for rc update, but the
1142                  * rc isn't initialized here yet, so ignore it
1143                  */
1144                 __ieee80211_vht_handle_opmode(sdata, sta,
1145                                               params->opmode_notif,
1146                                               band, false);
1147         }
1148
1149         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1150 #ifdef CONFIG_MAC80211_MESH
1151                 u32 changed = 0;
1152
1153                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1154                         switch (params->plink_state) {
1155                         case NL80211_PLINK_ESTAB:
1156                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1157                                         changed = mesh_plink_inc_estab_count(
1158                                                         sdata);
1159                                 sta->plink_state = params->plink_state;
1160
1161                                 ieee80211_mps_sta_status_update(sta);
1162                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1163                                               sdata->u.mesh.mshcfg.power_mode);
1164                                 break;
1165                         case NL80211_PLINK_LISTEN:
1166                         case NL80211_PLINK_BLOCKED:
1167                         case NL80211_PLINK_OPN_SNT:
1168                         case NL80211_PLINK_OPN_RCVD:
1169                         case NL80211_PLINK_CNF_RCVD:
1170                         case NL80211_PLINK_HOLDING:
1171                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1172                                         changed = mesh_plink_dec_estab_count(
1173                                                         sdata);
1174                                 sta->plink_state = params->plink_state;
1175
1176                                 ieee80211_mps_sta_status_update(sta);
1177                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1178                                                 NL80211_MESH_POWER_UNKNOWN);
1179                                 break;
1180                         default:
1181                                 /*  nothing  */
1182                                 break;
1183                         }
1184                 }
1185
1186                 switch (params->plink_action) {
1187                 case NL80211_PLINK_ACTION_NO_ACTION:
1188                         /* nothing */
1189                         break;
1190                 case NL80211_PLINK_ACTION_OPEN:
1191                         changed |= mesh_plink_open(sta);
1192                         break;
1193                 case NL80211_PLINK_ACTION_BLOCK:
1194                         changed |= mesh_plink_block(sta);
1195                         break;
1196                 }
1197
1198                 if (params->local_pm)
1199                         changed |=
1200                               ieee80211_mps_set_sta_local_pm(sta,
1201                                                              params->local_pm);
1202                 ieee80211_mbss_info_change_notify(sdata, changed);
1203 #endif
1204         }
1205
1206         /* set the STA state after all sta info from usermode has been set */
1207         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1208                 ret = sta_apply_auth_flags(local, sta, mask, set);
1209                 if (ret)
1210                         return ret;
1211         }
1212
1213         return 0;
1214 }
1215
1216 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1217                                  const u8 *mac,
1218                                  struct station_parameters *params)
1219 {
1220         struct ieee80211_local *local = wiphy_priv(wiphy);
1221         struct sta_info *sta;
1222         struct ieee80211_sub_if_data *sdata;
1223         int err;
1224         int layer2_update;
1225
1226         if (params->vlan) {
1227                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1228
1229                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1230                     sdata->vif.type != NL80211_IFTYPE_AP)
1231                         return -EINVAL;
1232         } else
1233                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1234
1235         if (ether_addr_equal(mac, sdata->vif.addr))
1236                 return -EINVAL;
1237
1238         if (is_multicast_ether_addr(mac))
1239                 return -EINVAL;
1240
1241         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1242         if (!sta)
1243                 return -ENOMEM;
1244
1245         /*
1246          * defaults -- if userspace wants something else we'll
1247          * change it accordingly in sta_apply_parameters()
1248          */
1249         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1250                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1251                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1252         } else {
1253                 sta->sta.tdls = true;
1254         }
1255
1256         err = sta_apply_parameters(local, sta, params);
1257         if (err) {
1258                 sta_info_free(local, sta);
1259                 return err;
1260         }
1261
1262         /*
1263          * for TDLS, rate control should be initialized only when
1264          * rates are known and station is marked authorized
1265          */
1266         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1267                 rate_control_rate_init(sta);
1268
1269         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1270                 sdata->vif.type == NL80211_IFTYPE_AP;
1271
1272         err = sta_info_insert_rcu(sta);
1273         if (err) {
1274                 rcu_read_unlock();
1275                 return err;
1276         }
1277
1278         if (layer2_update)
1279                 ieee80211_send_layer2_update(sta);
1280
1281         rcu_read_unlock();
1282
1283         return 0;
1284 }
1285
1286 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1287                                  struct station_del_parameters *params)
1288 {
1289         struct ieee80211_sub_if_data *sdata;
1290
1291         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1292
1293         if (params->mac)
1294                 return sta_info_destroy_addr_bss(sdata, params->mac);
1295
1296         sta_info_flush(sdata);
1297         return 0;
1298 }
1299
1300 static int ieee80211_change_station(struct wiphy *wiphy,
1301                                     struct net_device *dev, const u8 *mac,
1302                                     struct station_parameters *params)
1303 {
1304         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1305         struct ieee80211_local *local = wiphy_priv(wiphy);
1306         struct sta_info *sta;
1307         struct ieee80211_sub_if_data *vlansdata;
1308         enum cfg80211_station_type statype;
1309         int err;
1310
1311         mutex_lock(&local->sta_mtx);
1312
1313         sta = sta_info_get_bss(sdata, mac);
1314         if (!sta) {
1315                 err = -ENOENT;
1316                 goto out_err;
1317         }
1318
1319         switch (sdata->vif.type) {
1320         case NL80211_IFTYPE_MESH_POINT:
1321                 if (sdata->u.mesh.user_mpm)
1322                         statype = CFG80211_STA_MESH_PEER_USER;
1323                 else
1324                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1325                 break;
1326         case NL80211_IFTYPE_ADHOC:
1327                 statype = CFG80211_STA_IBSS;
1328                 break;
1329         case NL80211_IFTYPE_STATION:
1330                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1331                         statype = CFG80211_STA_AP_STA;
1332                         break;
1333                 }
1334                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1335                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1336                 else
1337                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1338                 break;
1339         case NL80211_IFTYPE_AP:
1340         case NL80211_IFTYPE_AP_VLAN:
1341                 statype = CFG80211_STA_AP_CLIENT;
1342                 break;
1343         default:
1344                 err = -EOPNOTSUPP;
1345                 goto out_err;
1346         }
1347
1348         err = cfg80211_check_station_change(wiphy, params, statype);
1349         if (err)
1350                 goto out_err;
1351
1352         if (params->vlan && params->vlan != sta->sdata->dev) {
1353                 bool prev_4addr = false;
1354                 bool new_4addr = false;
1355
1356                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1357
1358                 if (params->vlan->ieee80211_ptr->use_4addr) {
1359                         if (vlansdata->u.vlan.sta) {
1360                                 err = -EBUSY;
1361                                 goto out_err;
1362                         }
1363
1364                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1365                         new_4addr = true;
1366                 }
1367
1368                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1369                     sta->sdata->u.vlan.sta) {
1370                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1371                         prev_4addr = true;
1372                 }
1373
1374                 sta->sdata = vlansdata;
1375
1376                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1377                     prev_4addr != new_4addr) {
1378                         if (new_4addr)
1379                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1380                         else
1381                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1382                 }
1383
1384                 ieee80211_send_layer2_update(sta);
1385         }
1386
1387         err = sta_apply_parameters(local, sta, params);
1388         if (err)
1389                 goto out_err;
1390
1391         mutex_unlock(&local->sta_mtx);
1392
1393         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1394              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1395             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1396             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1397             sta_info_tx_streams(sta) != 1) {
1398                 ht_dbg(sta->sdata,
1399                        "%pM just authorized and MIMO capable - update SMPS\n",
1400                        sta->sta.addr);
1401                 ieee80211_send_smps_action(sta->sdata,
1402                         sta->sdata->bss->req_smps,
1403                         sta->sta.addr,
1404                         sta->sdata->vif.bss_conf.bssid);
1405         }
1406
1407         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1408             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1409                 ieee80211_recalc_ps(local, -1);
1410                 ieee80211_recalc_ps_vif(sdata);
1411         }
1412
1413         return 0;
1414 out_err:
1415         mutex_unlock(&local->sta_mtx);
1416         return err;
1417 }
1418
1419 #ifdef CONFIG_MAC80211_MESH
1420 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1421                                const u8 *dst, const u8 *next_hop)
1422 {
1423         struct ieee80211_sub_if_data *sdata;
1424         struct mesh_path *mpath;
1425         struct sta_info *sta;
1426
1427         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1428
1429         rcu_read_lock();
1430         sta = sta_info_get(sdata, next_hop);
1431         if (!sta) {
1432                 rcu_read_unlock();
1433                 return -ENOENT;
1434         }
1435
1436         mpath = mesh_path_add(sdata, dst);
1437         if (IS_ERR(mpath)) {
1438                 rcu_read_unlock();
1439                 return PTR_ERR(mpath);
1440         }
1441
1442         mesh_path_fix_nexthop(mpath, sta);
1443
1444         rcu_read_unlock();
1445         return 0;
1446 }
1447
1448 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1449                                const u8 *dst)
1450 {
1451         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1452
1453         if (dst)
1454                 return mesh_path_del(sdata, dst);
1455
1456         mesh_path_flush_by_iface(sdata);
1457         return 0;
1458 }
1459
1460 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1461                                   const u8 *dst, const u8 *next_hop)
1462 {
1463         struct ieee80211_sub_if_data *sdata;
1464         struct mesh_path *mpath;
1465         struct sta_info *sta;
1466
1467         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1468
1469         rcu_read_lock();
1470
1471         sta = sta_info_get(sdata, next_hop);
1472         if (!sta) {
1473                 rcu_read_unlock();
1474                 return -ENOENT;
1475         }
1476
1477         mpath = mesh_path_lookup(sdata, dst);
1478         if (!mpath) {
1479                 rcu_read_unlock();
1480                 return -ENOENT;
1481         }
1482
1483         mesh_path_fix_nexthop(mpath, sta);
1484
1485         rcu_read_unlock();
1486         return 0;
1487 }
1488
1489 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1490                             struct mpath_info *pinfo)
1491 {
1492         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1493
1494         if (next_hop_sta)
1495                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1496         else
1497                 eth_zero_addr(next_hop);
1498
1499         memset(pinfo, 0, sizeof(*pinfo));
1500
1501         pinfo->generation = mesh_paths_generation;
1502
1503         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1504                         MPATH_INFO_SN |
1505                         MPATH_INFO_METRIC |
1506                         MPATH_INFO_EXPTIME |
1507                         MPATH_INFO_DISCOVERY_TIMEOUT |
1508                         MPATH_INFO_DISCOVERY_RETRIES |
1509                         MPATH_INFO_FLAGS;
1510
1511         pinfo->frame_qlen = mpath->frame_queue.qlen;
1512         pinfo->sn = mpath->sn;
1513         pinfo->metric = mpath->metric;
1514         if (time_before(jiffies, mpath->exp_time))
1515                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1516         pinfo->discovery_timeout =
1517                         jiffies_to_msecs(mpath->discovery_timeout);
1518         pinfo->discovery_retries = mpath->discovery_retries;
1519         if (mpath->flags & MESH_PATH_ACTIVE)
1520                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1521         if (mpath->flags & MESH_PATH_RESOLVING)
1522                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1523         if (mpath->flags & MESH_PATH_SN_VALID)
1524                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1525         if (mpath->flags & MESH_PATH_FIXED)
1526                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1527         if (mpath->flags & MESH_PATH_RESOLVED)
1528                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1529 }
1530
1531 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1532                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1533
1534 {
1535         struct ieee80211_sub_if_data *sdata;
1536         struct mesh_path *mpath;
1537
1538         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1539
1540         rcu_read_lock();
1541         mpath = mesh_path_lookup(sdata, dst);
1542         if (!mpath) {
1543                 rcu_read_unlock();
1544                 return -ENOENT;
1545         }
1546         memcpy(dst, mpath->dst, ETH_ALEN);
1547         mpath_set_pinfo(mpath, next_hop, pinfo);
1548         rcu_read_unlock();
1549         return 0;
1550 }
1551
1552 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1553                                 int idx, u8 *dst, u8 *next_hop,
1554                                 struct mpath_info *pinfo)
1555 {
1556         struct ieee80211_sub_if_data *sdata;
1557         struct mesh_path *mpath;
1558
1559         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1560
1561         rcu_read_lock();
1562         mpath = mesh_path_lookup_by_idx(sdata, idx);
1563         if (!mpath) {
1564                 rcu_read_unlock();
1565                 return -ENOENT;
1566         }
1567         memcpy(dst, mpath->dst, ETH_ALEN);
1568         mpath_set_pinfo(mpath, next_hop, pinfo);
1569         rcu_read_unlock();
1570         return 0;
1571 }
1572
1573 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1574                           struct mpath_info *pinfo)
1575 {
1576         memset(pinfo, 0, sizeof(*pinfo));
1577         memcpy(mpp, mpath->mpp, ETH_ALEN);
1578
1579         pinfo->generation = mpp_paths_generation;
1580 }
1581
1582 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1583                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1584
1585 {
1586         struct ieee80211_sub_if_data *sdata;
1587         struct mesh_path *mpath;
1588
1589         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1590
1591         rcu_read_lock();
1592         mpath = mpp_path_lookup(sdata, dst);
1593         if (!mpath) {
1594                 rcu_read_unlock();
1595                 return -ENOENT;
1596         }
1597         memcpy(dst, mpath->dst, ETH_ALEN);
1598         mpp_set_pinfo(mpath, mpp, pinfo);
1599         rcu_read_unlock();
1600         return 0;
1601 }
1602
1603 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1604                               int idx, u8 *dst, u8 *mpp,
1605                               struct mpath_info *pinfo)
1606 {
1607         struct ieee80211_sub_if_data *sdata;
1608         struct mesh_path *mpath;
1609
1610         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1611
1612         rcu_read_lock();
1613         mpath = mpp_path_lookup_by_idx(sdata, idx);
1614         if (!mpath) {
1615                 rcu_read_unlock();
1616                 return -ENOENT;
1617         }
1618         memcpy(dst, mpath->dst, ETH_ALEN);
1619         mpp_set_pinfo(mpath, mpp, pinfo);
1620         rcu_read_unlock();
1621         return 0;
1622 }
1623
1624 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1625                                 struct net_device *dev,
1626                                 struct mesh_config *conf)
1627 {
1628         struct ieee80211_sub_if_data *sdata;
1629         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1630
1631         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1632         return 0;
1633 }
1634
1635 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1636 {
1637         return (mask >> (parm-1)) & 0x1;
1638 }
1639
1640 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1641                 const struct mesh_setup *setup)
1642 {
1643         u8 *new_ie;
1644         const u8 *old_ie;
1645         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1646                                         struct ieee80211_sub_if_data, u.mesh);
1647
1648         /* allocate information elements */
1649         new_ie = NULL;
1650         old_ie = ifmsh->ie;
1651
1652         if (setup->ie_len) {
1653                 new_ie = kmemdup(setup->ie, setup->ie_len,
1654                                 GFP_KERNEL);
1655                 if (!new_ie)
1656                         return -ENOMEM;
1657         }
1658         ifmsh->ie_len = setup->ie_len;
1659         ifmsh->ie = new_ie;
1660         kfree(old_ie);
1661
1662         /* now copy the rest of the setup parameters */
1663         ifmsh->mesh_id_len = setup->mesh_id_len;
1664         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1665         ifmsh->mesh_sp_id = setup->sync_method;
1666         ifmsh->mesh_pp_id = setup->path_sel_proto;
1667         ifmsh->mesh_pm_id = setup->path_metric;
1668         ifmsh->user_mpm = setup->user_mpm;
1669         ifmsh->mesh_auth_id = setup->auth_id;
1670         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1671         if (setup->is_authenticated)
1672                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1673         if (setup->is_secure)
1674                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1675
1676         /* mcast rate setting in Mesh Node */
1677         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1678                                                 sizeof(setup->mcast_rate));
1679         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1680
1681         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1682         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1683
1684         return 0;
1685 }
1686
1687 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1688                                         struct net_device *dev, u32 mask,
1689                                         const struct mesh_config *nconf)
1690 {
1691         struct mesh_config *conf;
1692         struct ieee80211_sub_if_data *sdata;
1693         struct ieee80211_if_mesh *ifmsh;
1694
1695         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1696         ifmsh = &sdata->u.mesh;
1697
1698         /* Set the config options which we are interested in setting */
1699         conf = &(sdata->u.mesh.mshcfg);
1700         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1701                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1702         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1703                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1704         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1705                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1706         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1707                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1708         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1709                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1710         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1711                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1712         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1713                 conf->element_ttl = nconf->element_ttl;
1714         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1715                 if (ifmsh->user_mpm)
1716                         return -EBUSY;
1717                 conf->auto_open_plinks = nconf->auto_open_plinks;
1718         }
1719         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1720                 conf->dot11MeshNbrOffsetMaxNeighbor =
1721                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1722         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1723                 conf->dot11MeshHWMPmaxPREQretries =
1724                         nconf->dot11MeshHWMPmaxPREQretries;
1725         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1726                 conf->path_refresh_time = nconf->path_refresh_time;
1727         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1728                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1729         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1730                 conf->dot11MeshHWMPactivePathTimeout =
1731                         nconf->dot11MeshHWMPactivePathTimeout;
1732         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1733                 conf->dot11MeshHWMPpreqMinInterval =
1734                         nconf->dot11MeshHWMPpreqMinInterval;
1735         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1736                 conf->dot11MeshHWMPperrMinInterval =
1737                         nconf->dot11MeshHWMPperrMinInterval;
1738         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1739                            mask))
1740                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1741                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1742         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1743                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1744                 ieee80211_mesh_root_setup(ifmsh);
1745         }
1746         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1747                 /* our current gate announcement implementation rides on root
1748                  * announcements, so require this ifmsh to also be a root node
1749                  * */
1750                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1751                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1752                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1753                         ieee80211_mesh_root_setup(ifmsh);
1754                 }
1755                 conf->dot11MeshGateAnnouncementProtocol =
1756                         nconf->dot11MeshGateAnnouncementProtocol;
1757         }
1758         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1759                 conf->dot11MeshHWMPRannInterval =
1760                         nconf->dot11MeshHWMPRannInterval;
1761         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1762                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1763         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1764                 /* our RSSI threshold implementation is supported only for
1765                  * devices that report signal in dBm.
1766                  */
1767                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1768                         return -ENOTSUPP;
1769                 conf->rssi_threshold = nconf->rssi_threshold;
1770         }
1771         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1772                 conf->ht_opmode = nconf->ht_opmode;
1773                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1774                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1775         }
1776         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1777                 conf->dot11MeshHWMPactivePathToRootTimeout =
1778                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1779         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1780                 conf->dot11MeshHWMProotInterval =
1781                         nconf->dot11MeshHWMProotInterval;
1782         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1783                 conf->dot11MeshHWMPconfirmationInterval =
1784                         nconf->dot11MeshHWMPconfirmationInterval;
1785         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1786                 conf->power_mode = nconf->power_mode;
1787                 ieee80211_mps_local_status_update(sdata);
1788         }
1789         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1790                 conf->dot11MeshAwakeWindowDuration =
1791                         nconf->dot11MeshAwakeWindowDuration;
1792         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1793                 conf->plink_timeout = nconf->plink_timeout;
1794         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1795         return 0;
1796 }
1797
1798 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1799                                const struct mesh_config *conf,
1800                                const struct mesh_setup *setup)
1801 {
1802         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1803         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1804         int err;
1805
1806         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1807         err = copy_mesh_setup(ifmsh, setup);
1808         if (err)
1809                 return err;
1810
1811         /* can mesh use other SMPS modes? */
1812         sdata->smps_mode = IEEE80211_SMPS_OFF;
1813         sdata->needed_rx_chains = sdata->local->rx_chains;
1814
1815         mutex_lock(&sdata->local->mtx);
1816         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1817                                         IEEE80211_CHANCTX_SHARED);
1818         mutex_unlock(&sdata->local->mtx);
1819         if (err)
1820                 return err;
1821
1822         return ieee80211_start_mesh(sdata);
1823 }
1824
1825 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1826 {
1827         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1828
1829         ieee80211_stop_mesh(sdata);
1830         mutex_lock(&sdata->local->mtx);
1831         ieee80211_vif_release_channel(sdata);
1832         mutex_unlock(&sdata->local->mtx);
1833
1834         return 0;
1835 }
1836 #endif
1837
1838 static int ieee80211_change_bss(struct wiphy *wiphy,
1839                                 struct net_device *dev,
1840                                 struct bss_parameters *params)
1841 {
1842         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1843         enum ieee80211_band band;
1844         u32 changed = 0;
1845
1846         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1847                 return -ENOENT;
1848
1849         band = ieee80211_get_sdata_band(sdata);
1850
1851         if (params->use_cts_prot >= 0) {
1852                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1853                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1854         }
1855         if (params->use_short_preamble >= 0) {
1856                 sdata->vif.bss_conf.use_short_preamble =
1857                         params->use_short_preamble;
1858                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1859         }
1860
1861         if (!sdata->vif.bss_conf.use_short_slot &&
1862             band == IEEE80211_BAND_5GHZ) {
1863                 sdata->vif.bss_conf.use_short_slot = true;
1864                 changed |= BSS_CHANGED_ERP_SLOT;
1865         }
1866
1867         if (params->use_short_slot_time >= 0) {
1868                 sdata->vif.bss_conf.use_short_slot =
1869                         params->use_short_slot_time;
1870                 changed |= BSS_CHANGED_ERP_SLOT;
1871         }
1872
1873         if (params->basic_rates) {
1874                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1875                                          wiphy->bands[band],
1876                                          params->basic_rates,
1877                                          params->basic_rates_len,
1878                                          &sdata->vif.bss_conf.basic_rates);
1879                 changed |= BSS_CHANGED_BASIC_RATES;
1880         }
1881
1882         if (params->ap_isolate >= 0) {
1883                 if (params->ap_isolate)
1884                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1885                 else
1886                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1887         }
1888
1889         if (params->ht_opmode >= 0) {
1890                 sdata->vif.bss_conf.ht_operation_mode =
1891                         (u16) params->ht_opmode;
1892                 changed |= BSS_CHANGED_HT;
1893         }
1894
1895         if (params->p2p_ctwindow >= 0) {
1896                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1897                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1898                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1899                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1900                 changed |= BSS_CHANGED_P2P_PS;
1901         }
1902
1903         if (params->p2p_opp_ps > 0) {
1904                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1905                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1906                 changed |= BSS_CHANGED_P2P_PS;
1907         } else if (params->p2p_opp_ps == 0) {
1908                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1909                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1910                 changed |= BSS_CHANGED_P2P_PS;
1911         }
1912
1913         ieee80211_bss_info_change_notify(sdata, changed);
1914
1915         return 0;
1916 }
1917
1918 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1919                                     struct net_device *dev,
1920                                     struct ieee80211_txq_params *params)
1921 {
1922         struct ieee80211_local *local = wiphy_priv(wiphy);
1923         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1924         struct ieee80211_tx_queue_params p;
1925
1926         if (!local->ops->conf_tx)
1927                 return -EOPNOTSUPP;
1928
1929         if (local->hw.queues < IEEE80211_NUM_ACS)
1930                 return -EOPNOTSUPP;
1931
1932         memset(&p, 0, sizeof(p));
1933         p.aifs = params->aifs;
1934         p.cw_max = params->cwmax;
1935         p.cw_min = params->cwmin;
1936         p.txop = params->txop;
1937
1938         /*
1939          * Setting tx queue params disables u-apsd because it's only
1940          * called in master mode.
1941          */
1942         p.uapsd = false;
1943
1944         sdata->tx_conf[params->ac] = p;
1945         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1946                 wiphy_debug(local->hw.wiphy,
1947                             "failed to set TX queue parameters for AC %d\n",
1948                             params->ac);
1949                 return -EINVAL;
1950         }
1951
1952         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1953
1954         return 0;
1955 }
1956
1957 #ifdef CONFIG_PM
1958 static int ieee80211_suspend(struct wiphy *wiphy,
1959                              struct cfg80211_wowlan *wowlan)
1960 {
1961         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1962 }
1963
1964 static int ieee80211_resume(struct wiphy *wiphy)
1965 {
1966         return __ieee80211_resume(wiphy_priv(wiphy));
1967 }
1968 #else
1969 #define ieee80211_suspend NULL
1970 #define ieee80211_resume NULL
1971 #endif
1972
1973 static int ieee80211_scan(struct wiphy *wiphy,
1974                           struct cfg80211_scan_request *req)
1975 {
1976         struct ieee80211_sub_if_data *sdata;
1977
1978         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1979
1980         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1981         case NL80211_IFTYPE_STATION:
1982         case NL80211_IFTYPE_ADHOC:
1983         case NL80211_IFTYPE_MESH_POINT:
1984         case NL80211_IFTYPE_P2P_CLIENT:
1985         case NL80211_IFTYPE_P2P_DEVICE:
1986                 break;
1987         case NL80211_IFTYPE_P2P_GO:
1988                 if (sdata->local->ops->hw_scan)
1989                         break;
1990                 /*
1991                  * FIXME: implement NoA while scanning in software,
1992                  * for now fall through to allow scanning only when
1993                  * beaconing hasn't been configured yet
1994                  */
1995         case NL80211_IFTYPE_AP:
1996                 /*
1997                  * If the scan has been forced (and the driver supports
1998                  * forcing), don't care about being beaconing already.
1999                  * This will create problems to the attached stations (e.g. all
2000                  * the  frames sent while scanning on other channel will be
2001                  * lost)
2002                  */
2003                 if (sdata->u.ap.beacon &&
2004                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2005                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2006                         return -EOPNOTSUPP;
2007                 break;
2008         default:
2009                 return -EOPNOTSUPP;
2010         }
2011
2012         return ieee80211_request_scan(sdata, req);
2013 }
2014
2015 static int
2016 ieee80211_sched_scan_start(struct wiphy *wiphy,
2017                            struct net_device *dev,
2018                            struct cfg80211_sched_scan_request *req)
2019 {
2020         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2021
2022         if (!sdata->local->ops->sched_scan_start)
2023                 return -EOPNOTSUPP;
2024
2025         return ieee80211_request_sched_scan_start(sdata, req);
2026 }
2027
2028 static int
2029 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2030 {
2031         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2032
2033         if (!sdata->local->ops->sched_scan_stop)
2034                 return -EOPNOTSUPP;
2035
2036         return ieee80211_request_sched_scan_stop(sdata);
2037 }
2038
2039 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2040                           struct cfg80211_auth_request *req)
2041 {
2042         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2043 }
2044
2045 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2046                            struct cfg80211_assoc_request *req)
2047 {
2048         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2049 }
2050
2051 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2052                             struct cfg80211_deauth_request *req)
2053 {
2054         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2055 }
2056
2057 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2058                               struct cfg80211_disassoc_request *req)
2059 {
2060         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2061 }
2062
2063 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2064                                struct cfg80211_ibss_params *params)
2065 {
2066         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2067 }
2068
2069 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2070 {
2071         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2072 }
2073
2074 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2075                               struct ocb_setup *setup)
2076 {
2077         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2078 }
2079
2080 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2081 {
2082         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2083 }
2084
2085 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2086                                     int rate[IEEE80211_NUM_BANDS])
2087 {
2088         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2089
2090         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2091                sizeof(int) * IEEE80211_NUM_BANDS);
2092
2093         return 0;
2094 }
2095
2096 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2097 {
2098         struct ieee80211_local *local = wiphy_priv(wiphy);
2099         int err;
2100
2101         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2102                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2103
2104                 if (err)
2105                         return err;
2106         }
2107
2108         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2109             (changed & WIPHY_PARAM_DYN_ACK)) {
2110                 s16 coverage_class;
2111
2112                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2113                                         wiphy->coverage_class : -1;
2114                 err = drv_set_coverage_class(local, coverage_class);
2115
2116                 if (err)
2117                         return err;
2118         }
2119
2120         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2121                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2122
2123                 if (err)
2124                         return err;
2125         }
2126
2127         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2128                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2129                         return -EINVAL;
2130                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2131         }
2132         if (changed & WIPHY_PARAM_RETRY_LONG) {
2133                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2134                         return -EINVAL;
2135                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2136         }
2137         if (changed &
2138             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2139                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2140
2141         return 0;
2142 }
2143
2144 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2145                                   struct wireless_dev *wdev,
2146                                   enum nl80211_tx_power_setting type, int mbm)
2147 {
2148         struct ieee80211_local *local = wiphy_priv(wiphy);
2149         struct ieee80211_sub_if_data *sdata;
2150         enum nl80211_tx_power_setting txp_type = type;
2151         bool update_txp_type = false;
2152
2153         if (wdev) {
2154                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2155
2156                 switch (type) {
2157                 case NL80211_TX_POWER_AUTOMATIC:
2158                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2159                         txp_type = NL80211_TX_POWER_LIMITED;
2160                         break;
2161                 case NL80211_TX_POWER_LIMITED:
2162                 case NL80211_TX_POWER_FIXED:
2163                         if (mbm < 0 || (mbm % 100))
2164                                 return -EOPNOTSUPP;
2165                         sdata->user_power_level = MBM_TO_DBM(mbm);
2166                         break;
2167                 }
2168
2169                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2170                         update_txp_type = true;
2171                         sdata->vif.bss_conf.txpower_type = txp_type;
2172                 }
2173
2174                 ieee80211_recalc_txpower(sdata, update_txp_type);
2175
2176                 return 0;
2177         }
2178
2179         switch (type) {
2180         case NL80211_TX_POWER_AUTOMATIC:
2181                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2182                 txp_type = NL80211_TX_POWER_LIMITED;
2183                 break;
2184         case NL80211_TX_POWER_LIMITED:
2185         case NL80211_TX_POWER_FIXED:
2186                 if (mbm < 0 || (mbm % 100))
2187                         return -EOPNOTSUPP;
2188                 local->user_power_level = MBM_TO_DBM(mbm);
2189                 break;
2190         }
2191
2192         mutex_lock(&local->iflist_mtx);
2193         list_for_each_entry(sdata, &local->interfaces, list) {
2194                 sdata->user_power_level = local->user_power_level;
2195                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2196                         update_txp_type = true;
2197                 sdata->vif.bss_conf.txpower_type = txp_type;
2198         }
2199         list_for_each_entry(sdata, &local->interfaces, list)
2200                 ieee80211_recalc_txpower(sdata, update_txp_type);
2201         mutex_unlock(&local->iflist_mtx);
2202
2203         return 0;
2204 }
2205
2206 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2207                                   struct wireless_dev *wdev,
2208                                   int *dbm)
2209 {
2210         struct ieee80211_local *local = wiphy_priv(wiphy);
2211         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2212
2213         if (local->ops->get_txpower)
2214                 return drv_get_txpower(local, sdata, dbm);
2215
2216         if (!local->use_chanctx)
2217                 *dbm = local->hw.conf.power_level;
2218         else
2219                 *dbm = sdata->vif.bss_conf.txpower;
2220
2221         return 0;
2222 }
2223
2224 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2225                                   const u8 *addr)
2226 {
2227         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2228
2229         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2230
2231         return 0;
2232 }
2233
2234 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2235 {
2236         struct ieee80211_local *local = wiphy_priv(wiphy);
2237
2238         drv_rfkill_poll(local);
2239 }
2240
2241 #ifdef CONFIG_NL80211_TESTMODE
2242 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2243                                   struct wireless_dev *wdev,
2244                                   void *data, int len)
2245 {
2246         struct ieee80211_local *local = wiphy_priv(wiphy);
2247         struct ieee80211_vif *vif = NULL;
2248
2249         if (!local->ops->testmode_cmd)
2250                 return -EOPNOTSUPP;
2251
2252         if (wdev) {
2253                 struct ieee80211_sub_if_data *sdata;
2254
2255                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2256                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2257                         vif = &sdata->vif;
2258         }
2259
2260         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2261 }
2262
2263 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2264                                    struct sk_buff *skb,
2265                                    struct netlink_callback *cb,
2266                                    void *data, int len)
2267 {
2268         struct ieee80211_local *local = wiphy_priv(wiphy);
2269
2270         if (!local->ops->testmode_dump)
2271                 return -EOPNOTSUPP;
2272
2273         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2274 }
2275 #endif
2276
2277 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2278                                 enum ieee80211_smps_mode smps_mode)
2279 {
2280         struct sta_info *sta;
2281         enum ieee80211_smps_mode old_req;
2282
2283         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2284                 return -EINVAL;
2285
2286         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2287                 return 0;
2288
2289         old_req = sdata->u.ap.req_smps;
2290         sdata->u.ap.req_smps = smps_mode;
2291
2292         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2293         if (old_req == smps_mode ||
2294             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2295                 return 0;
2296
2297          /* If no associated stations, there's no need to do anything */
2298         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2299                 sdata->smps_mode = smps_mode;
2300                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2301                 return 0;
2302         }
2303
2304         ht_dbg(sdata,
2305                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2306                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2307
2308         mutex_lock(&sdata->local->sta_mtx);
2309         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2310                 /*
2311                  * Only stations associated to our AP and
2312                  * associated VLANs
2313                  */
2314                 if (sta->sdata->bss != &sdata->u.ap)
2315                         continue;
2316
2317                 /* This station doesn't support MIMO - skip it */
2318                 if (sta_info_tx_streams(sta) == 1)
2319                         continue;
2320
2321                 /*
2322                  * Don't wake up a STA just to send the action frame
2323                  * unless we are getting more restrictive.
2324                  */
2325                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2326                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2327                                                    smps_mode)) {
2328                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2329                                sta->sta.addr);
2330                         continue;
2331                 }
2332
2333                 /*
2334                  * If the STA is not authorized, wait until it gets
2335                  * authorized and the action frame will be sent then.
2336                  */
2337                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2338                         continue;
2339
2340                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2341                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2342                                            sdata->vif.bss_conf.bssid);
2343         }
2344         mutex_unlock(&sdata->local->sta_mtx);
2345
2346         sdata->smps_mode = smps_mode;
2347         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2348
2349         return 0;
2350 }
2351
2352 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2353                                  enum ieee80211_smps_mode smps_mode)
2354 {
2355         const u8 *ap;
2356         enum ieee80211_smps_mode old_req;
2357         int err;
2358
2359         lockdep_assert_held(&sdata->wdev.mtx);
2360
2361         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2362                 return -EINVAL;
2363
2364         old_req = sdata->u.mgd.req_smps;
2365         sdata->u.mgd.req_smps = smps_mode;
2366
2367         if (old_req == smps_mode &&
2368             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2369                 return 0;
2370
2371         /*
2372          * If not associated, or current association is not an HT
2373          * association, there's no need to do anything, just store
2374          * the new value until we associate.
2375          */
2376         if (!sdata->u.mgd.associated ||
2377             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2378                 return 0;
2379
2380         ap = sdata->u.mgd.associated->bssid;
2381
2382         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2383                 if (sdata->u.mgd.powersave)
2384                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2385                 else
2386                         smps_mode = IEEE80211_SMPS_OFF;
2387         }
2388
2389         /* send SM PS frame to AP */
2390         err = ieee80211_send_smps_action(sdata, smps_mode,
2391                                          ap, ap);
2392         if (err)
2393                 sdata->u.mgd.req_smps = old_req;
2394
2395         return err;
2396 }
2397
2398 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2399                                     bool enabled, int timeout)
2400 {
2401         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2402         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2403
2404         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2405                 return -EOPNOTSUPP;
2406
2407         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2408                 return -EOPNOTSUPP;
2409
2410         if (enabled == sdata->u.mgd.powersave &&
2411             timeout == local->dynamic_ps_forced_timeout)
2412                 return 0;
2413
2414         sdata->u.mgd.powersave = enabled;
2415         local->dynamic_ps_forced_timeout = timeout;
2416
2417         /* no change, but if automatic follow powersave */
2418         sdata_lock(sdata);
2419         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2420         sdata_unlock(sdata);
2421
2422         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2423                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2424
2425         ieee80211_recalc_ps(local, -1);
2426         ieee80211_recalc_ps_vif(sdata);
2427
2428         return 0;
2429 }
2430
2431 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2432                                          struct net_device *dev,
2433                                          s32 rssi_thold, u32 rssi_hyst)
2434 {
2435         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2436         struct ieee80211_vif *vif = &sdata->vif;
2437         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2438
2439         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2440             rssi_hyst == bss_conf->cqm_rssi_hyst)
2441                 return 0;
2442
2443         bss_conf->cqm_rssi_thold = rssi_thold;
2444         bss_conf->cqm_rssi_hyst = rssi_hyst;
2445
2446         /* tell the driver upon association, unless already associated */
2447         if (sdata->u.mgd.associated &&
2448             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2449                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2450
2451         return 0;
2452 }
2453
2454 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2455                                       struct net_device *dev,
2456                                       const u8 *addr,
2457                                       const struct cfg80211_bitrate_mask *mask)
2458 {
2459         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2460         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2461         int i, ret;
2462
2463         if (!ieee80211_sdata_running(sdata))
2464                 return -ENETDOWN;
2465
2466         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2467                 ret = drv_set_bitrate_mask(local, sdata, mask);
2468                 if (ret)
2469                         return ret;
2470         }
2471
2472         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2473                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2474                 int j;
2475
2476                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2477                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2478                        sizeof(mask->control[i].ht_mcs));
2479
2480                 sdata->rc_has_mcs_mask[i] = false;
2481                 if (!sband)
2482                         continue;
2483
2484                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2485                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2486                                 sdata->rc_has_mcs_mask[i] = true;
2487                                 break;
2488                         }
2489         }
2490
2491         return 0;
2492 }
2493
2494 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2495                                            struct ieee80211_roc_work *new_roc,
2496                                            struct ieee80211_roc_work *cur_roc)
2497 {
2498         unsigned long j = jiffies;
2499         unsigned long cur_roc_end = cur_roc->hw_start_time +
2500                                     msecs_to_jiffies(cur_roc->duration);
2501         struct ieee80211_roc_work *next_roc;
2502         int new_dur;
2503
2504         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2505                 return false;
2506
2507         if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
2508                 return false;
2509
2510         ieee80211_handle_roc_started(new_roc);
2511
2512         new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);
2513
2514         /* cur_roc is long enough - add new_roc to the dependents list. */
2515         if (new_dur <= 0) {
2516                 list_add_tail(&new_roc->list, &cur_roc->dependents);
2517                 return true;
2518         }
2519
2520         new_roc->duration = new_dur;
2521
2522         /*
2523          * if cur_roc was already coalesced before, we might
2524          * want to extend the next roc instead of adding
2525          * a new one.
2526          */
2527         next_roc = list_entry(cur_roc->list.next,
2528                               struct ieee80211_roc_work, list);
2529         if (&next_roc->list != &local->roc_list &&
2530             next_roc->chan == new_roc->chan &&
2531             next_roc->sdata == new_roc->sdata &&
2532             !WARN_ON(next_roc->started)) {
2533                 list_add_tail(&new_roc->list, &next_roc->dependents);
2534                 next_roc->duration = max(next_roc->duration,
2535                                          new_roc->duration);
2536                 next_roc->type = max(next_roc->type, new_roc->type);
2537                 return true;
2538         }
2539
2540         /* add right after cur_roc */
2541         list_add(&new_roc->list, &cur_roc->list);
2542
2543         return true;
2544 }
2545
2546 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2547                                     struct ieee80211_sub_if_data *sdata,
2548                                     struct ieee80211_channel *channel,
2549                                     unsigned int duration, u64 *cookie,
2550                                     struct sk_buff *txskb,
2551                                     enum ieee80211_roc_type type)
2552 {
2553         struct ieee80211_roc_work *roc, *tmp;
2554         bool queued = false;
2555         int ret;
2556
2557         lockdep_assert_held(&local->mtx);
2558
2559         if (local->use_chanctx && !local->ops->remain_on_channel)
2560                 return -EOPNOTSUPP;
2561
2562         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2563         if (!roc)
2564                 return -ENOMEM;
2565
2566         /*
2567          * If the duration is zero, then the driver
2568          * wouldn't actually do anything. Set it to
2569          * 10 for now.
2570          *
2571          * TODO: cancel the off-channel operation
2572          *       when we get the SKB's TX status and
2573          *       the wait time was zero before.
2574          */
2575         if (!duration)
2576                 duration = 10;
2577
2578         roc->chan = channel;
2579         roc->duration = duration;
2580         roc->req_duration = duration;
2581         roc->frame = txskb;
2582         roc->type = type;
2583         roc->mgmt_tx_cookie = (unsigned long)txskb;
2584         roc->sdata = sdata;
2585         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2586         INIT_LIST_HEAD(&roc->dependents);
2587
2588         /*
2589          * cookie is either the roc cookie (for normal roc)
2590          * or the SKB (for mgmt TX)
2591          */
2592         if (!txskb) {
2593                 /* local->mtx protects this */
2594                 local->roc_cookie_counter++;
2595                 roc->cookie = local->roc_cookie_counter;
2596                 /* wow, you wrapped 64 bits ... more likely a bug */
2597                 if (WARN_ON(roc->cookie == 0)) {
2598                         roc->cookie = 1;
2599                         local->roc_cookie_counter++;
2600                 }
2601                 *cookie = roc->cookie;
2602         } else {
2603                 *cookie = (unsigned long)txskb;
2604         }
2605
2606         /* if there's one pending or we're scanning, queue this one */
2607         if (!list_empty(&local->roc_list) ||
2608             local->scanning || ieee80211_is_radar_required(local))
2609                 goto out_check_combine;
2610
2611         /* if not HW assist, just queue & schedule work */
2612         if (!local->ops->remain_on_channel) {
2613                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2614                 goto out_queue;
2615         }
2616
2617         /* otherwise actually kick it off here (for error handling) */
2618
2619         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2620         if (ret) {
2621                 kfree(roc);
2622                 return ret;
2623         }
2624
2625         roc->started = true;
2626         goto out_queue;
2627
2628  out_check_combine:
2629         list_for_each_entry(tmp, &local->roc_list, list) {
2630                 if (tmp->chan != channel || tmp->sdata != sdata)
2631                         continue;
2632
2633                 /*
2634                  * Extend this ROC if possible:
2635                  *
2636                  * If it hasn't started yet, just increase the duration
2637                  * and add the new one to the list of dependents.
2638                  * If the type of the new ROC has higher priority, modify the
2639                  * type of the previous one to match that of the new one.
2640                  */
2641                 if (!tmp->started) {
2642                         list_add_tail(&roc->list, &tmp->dependents);
2643                         tmp->duration = max(tmp->duration, roc->duration);
2644                         tmp->type = max(tmp->type, roc->type);
2645                         queued = true;
2646                         break;
2647                 }
2648
2649                 /* If it has already started, it's more difficult ... */
2650                 if (local->ops->remain_on_channel) {
2651                         /*
2652                          * In the offloaded ROC case, if it hasn't begun, add
2653                          * this new one to the dependent list to be handled
2654                          * when the master one begins. If it has begun,
2655                          * check that there's still a minimum time left and
2656                          * if so, start this one, transmitting the frame, but
2657                          * add it to the list directly after this one with
2658                          * a reduced time so we'll ask the driver to execute
2659                          * it right after finishing the previous one, in the
2660                          * hope that it'll also be executed right afterwards,
2661                          * effectively extending the old one.
2662                          * If there's no minimum time left, just add it to the
2663                          * normal list.
2664                          * TODO: the ROC type is ignored here, assuming that it
2665                          * is better to immediately use the current ROC.
2666                          */
2667                         if (!tmp->hw_begun) {
2668                                 list_add_tail(&roc->list, &tmp->dependents);
2669                                 queued = true;
2670                                 break;
2671                         }
2672
2673                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2674                                 queued = true;
2675                 } else if (del_timer_sync(&tmp->work.timer)) {
2676                         unsigned long new_end;
2677
2678                         /*
2679                          * In the software ROC case, cancel the timer, if
2680                          * that fails then the finish work is already
2681                          * queued/pending and thus we queue the new ROC
2682                          * normally, if that succeeds then we can extend
2683                          * the timer duration and TX the frame (if any.)
2684                          */
2685
2686                         list_add_tail(&roc->list, &tmp->dependents);
2687                         queued = true;
2688
2689                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2690
2691                         /* ok, it was started & we canceled timer */
2692                         if (time_after(new_end, tmp->work.timer.expires))
2693                                 mod_timer(&tmp->work.timer, new_end);
2694                         else
2695                                 add_timer(&tmp->work.timer);
2696
2697                         ieee80211_handle_roc_started(roc);
2698                 }
2699                 break;
2700         }
2701
2702  out_queue:
2703         if (!queued)
2704                 list_add_tail(&roc->list, &local->roc_list);
2705
2706         return 0;
2707 }
2708
2709 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2710                                        struct wireless_dev *wdev,
2711                                        struct ieee80211_channel *chan,
2712                                        unsigned int duration,
2713                                        u64 *cookie)
2714 {
2715         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2716         struct ieee80211_local *local = sdata->local;
2717         int ret;
2718
2719         mutex_lock(&local->mtx);
2720         ret = ieee80211_start_roc_work(local, sdata, chan,
2721                                        duration, cookie, NULL,
2722                                        IEEE80211_ROC_TYPE_NORMAL);
2723         mutex_unlock(&local->mtx);
2724
2725         return ret;
2726 }
2727
2728 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2729                                 u64 cookie, bool mgmt_tx)
2730 {
2731         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2732         int ret;
2733
2734         mutex_lock(&local->mtx);
2735         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2736                 struct ieee80211_roc_work *dep, *tmp2;
2737
2738                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2739                         if (!mgmt_tx && dep->cookie != cookie)
2740                                 continue;
2741                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2742                                 continue;
2743                         /* found dependent item -- just remove it */
2744                         list_del(&dep->list);
2745                         mutex_unlock(&local->mtx);
2746
2747                         ieee80211_roc_notify_destroy(dep, true);
2748                         return 0;
2749                 }
2750
2751                 if (!mgmt_tx && roc->cookie != cookie)
2752                         continue;
2753                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2754                         continue;
2755
2756                 found = roc;
2757                 break;
2758         }
2759
2760         if (!found) {
2761                 mutex_unlock(&local->mtx);
2762                 return -ENOENT;
2763         }
2764
2765         /*
2766          * We found the item to cancel, so do that. Note that it
2767          * may have dependents, which we also cancel (and send
2768          * the expired signal for.) Not doing so would be quite
2769          * tricky here, but we may need to fix it later.
2770          */
2771
2772         if (local->ops->remain_on_channel) {
2773                 if (found->started) {
2774                         ret = drv_cancel_remain_on_channel(local);
2775                         if (WARN_ON_ONCE(ret)) {
2776                                 mutex_unlock(&local->mtx);
2777                                 return ret;
2778                         }
2779                 }
2780
2781                 list_del(&found->list);
2782
2783                 if (found->started)
2784                         ieee80211_start_next_roc(local);
2785                 mutex_unlock(&local->mtx);
2786
2787                 ieee80211_roc_notify_destroy(found, true);
2788         } else {
2789                 /* work may be pending so use it all the time */
2790                 found->abort = true;
2791                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2792
2793                 mutex_unlock(&local->mtx);
2794
2795                 /* work will clean up etc */
2796                 flush_delayed_work(&found->work);
2797                 WARN_ON(!found->to_be_freed);
2798                 kfree(found);
2799         }
2800
2801         return 0;
2802 }
2803
2804 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2805                                               struct wireless_dev *wdev,
2806                                               u64 cookie)
2807 {
2808         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2809         struct ieee80211_local *local = sdata->local;
2810
2811         return ieee80211_cancel_roc(local, cookie, false);
2812 }
2813
2814 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2815                                            struct net_device *dev,
2816                                            struct cfg80211_chan_def *chandef,
2817                                            u32 cac_time_ms)
2818 {
2819         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2820         struct ieee80211_local *local = sdata->local;
2821         int err;
2822
2823         mutex_lock(&local->mtx);
2824         if (!list_empty(&local->roc_list) || local->scanning) {
2825                 err = -EBUSY;
2826                 goto out_unlock;
2827         }
2828
2829         /* whatever, but channel contexts should not complain about that one */
2830         sdata->smps_mode = IEEE80211_SMPS_OFF;
2831         sdata->needed_rx_chains = local->rx_chains;
2832
2833         err = ieee80211_vif_use_channel(sdata, chandef,
2834                                         IEEE80211_CHANCTX_SHARED);
2835         if (err)
2836                 goto out_unlock;
2837
2838         ieee80211_queue_delayed_work(&sdata->local->hw,
2839                                      &sdata->dfs_cac_timer_work,
2840                                      msecs_to_jiffies(cac_time_ms));
2841
2842  out_unlock:
2843         mutex_unlock(&local->mtx);
2844         return err;
2845 }
2846
2847 static struct cfg80211_beacon_data *
2848 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2849 {
2850         struct cfg80211_beacon_data *new_beacon;
2851         u8 *pos;
2852         int len;
2853
2854         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2855               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2856               beacon->probe_resp_len;
2857
2858         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2859         if (!new_beacon)
2860                 return NULL;
2861
2862         pos = (u8 *)(new_beacon + 1);
2863         if (beacon->head_len) {
2864                 new_beacon->head_len = beacon->head_len;
2865                 new_beacon->head = pos;
2866                 memcpy(pos, beacon->head, beacon->head_len);
2867                 pos += beacon->head_len;
2868         }
2869         if (beacon->tail_len) {
2870                 new_beacon->tail_len = beacon->tail_len;
2871                 new_beacon->tail = pos;
2872                 memcpy(pos, beacon->tail, beacon->tail_len);
2873                 pos += beacon->tail_len;
2874         }
2875         if (beacon->beacon_ies_len) {
2876                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2877                 new_beacon->beacon_ies = pos;
2878                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2879                 pos += beacon->beacon_ies_len;
2880         }
2881         if (beacon->proberesp_ies_len) {
2882                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2883                 new_beacon->proberesp_ies = pos;
2884                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2885                 pos += beacon->proberesp_ies_len;
2886         }
2887         if (beacon->assocresp_ies_len) {
2888                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2889                 new_beacon->assocresp_ies = pos;
2890                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2891                 pos += beacon->assocresp_ies_len;
2892         }
2893         if (beacon->probe_resp_len) {
2894                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2895                 beacon->probe_resp = pos;
2896                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2897                 pos += beacon->probe_resp_len;
2898         }
2899
2900         return new_beacon;
2901 }
2902
2903 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2904 {
2905         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2906
2907         ieee80211_queue_work(&sdata->local->hw,
2908                              &sdata->csa_finalize_work);
2909 }
2910 EXPORT_SYMBOL(ieee80211_csa_finish);
2911
2912 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2913                                           u32 *changed)
2914 {
2915         int err;
2916
2917         switch (sdata->vif.type) {
2918         case NL80211_IFTYPE_AP:
2919                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2920                                               NULL);
2921                 kfree(sdata->u.ap.next_beacon);
2922                 sdata->u.ap.next_beacon = NULL;
2923
2924                 if (err < 0)
2925                         return err;
2926                 *changed |= err;
2927                 break;
2928         case NL80211_IFTYPE_ADHOC:
2929                 err = ieee80211_ibss_finish_csa(sdata);
2930                 if (err < 0)
2931                         return err;
2932                 *changed |= err;
2933                 break;
2934 #ifdef CONFIG_MAC80211_MESH
2935         case NL80211_IFTYPE_MESH_POINT:
2936                 err = ieee80211_mesh_finish_csa(sdata);
2937                 if (err < 0)
2938                         return err;
2939                 *changed |= err;
2940                 break;
2941 #endif
2942         default:
2943                 WARN_ON(1);
2944                 return -EINVAL;
2945         }
2946
2947         return 0;
2948 }
2949
2950 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2951 {
2952         struct ieee80211_local *local = sdata->local;
2953         u32 changed = 0;
2954         int err;
2955
2956         sdata_assert_lock(sdata);
2957         lockdep_assert_held(&local->mtx);
2958         lockdep_assert_held(&local->chanctx_mtx);
2959
2960         /*
2961          * using reservation isn't immediate as it may be deferred until later
2962          * with multi-vif. once reservation is complete it will re-schedule the
2963          * work with no reserved_chanctx so verify chandef to check if it
2964          * completed successfully
2965          */
2966
2967         if (sdata->reserved_chanctx) {
2968                 /*
2969                  * with multi-vif csa driver may call ieee80211_csa_finish()
2970                  * many times while waiting for other interfaces to use their
2971                  * reservations
2972                  */
2973                 if (sdata->reserved_ready)
2974                         return 0;
2975
2976                 return ieee80211_vif_use_reserved_context(sdata);
2977         }
2978
2979         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2980                                         &sdata->csa_chandef))
2981                 return -EINVAL;
2982
2983         sdata->vif.csa_active = false;
2984
2985         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2986         if (err)
2987                 return err;
2988
2989         ieee80211_bss_info_change_notify(sdata, changed);
2990
2991         if (sdata->csa_block_tx) {
2992                 ieee80211_wake_vif_queues(local, sdata,
2993                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2994                 sdata->csa_block_tx = false;
2995         }
2996
2997         err = drv_post_channel_switch(sdata);
2998         if (err)
2999                 return err;
3000
3001         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3002
3003         return 0;
3004 }
3005
3006 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3007 {
3008         if (__ieee80211_csa_finalize(sdata)) {
3009                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3010                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3011                                     GFP_KERNEL);
3012         }
3013 }
3014
3015 void ieee80211_csa_finalize_work(struct work_struct *work)
3016 {
3017         struct ieee80211_sub_if_data *sdata =
3018                 container_of(work, struct ieee80211_sub_if_data,
3019                              csa_finalize_work);
3020         struct ieee80211_local *local = sdata->local;
3021
3022         sdata_lock(sdata);
3023         mutex_lock(&local->mtx);
3024         mutex_lock(&local->chanctx_mtx);
3025
3026         /* AP might have been stopped while waiting for the lock. */
3027         if (!sdata->vif.csa_active)
3028                 goto unlock;
3029
3030         if (!ieee80211_sdata_running(sdata))
3031                 goto unlock;
3032
3033         ieee80211_csa_finalize(sdata);
3034
3035 unlock:
3036         mutex_unlock(&local->chanctx_mtx);
3037         mutex_unlock(&local->mtx);
3038         sdata_unlock(sdata);
3039 }
3040
3041 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3042                                     struct cfg80211_csa_settings *params,
3043                                     u32 *changed)
3044 {
3045         struct ieee80211_csa_settings csa = {};
3046         int err;
3047
3048         switch (sdata->vif.type) {
3049         case NL80211_IFTYPE_AP:
3050                 sdata->u.ap.next_beacon =
3051                         cfg80211_beacon_dup(&params->beacon_after);
3052                 if (!sdata->u.ap.next_beacon)
3053                         return -ENOMEM;
3054
3055                 /*
3056                  * With a count of 0, we don't have to wait for any
3057                  * TBTT before switching, so complete the CSA
3058                  * immediately.  In theory, with a count == 1 we
3059                  * should delay the switch until just before the next
3060                  * TBTT, but that would complicate things so we switch
3061                  * immediately too.  If we would delay the switch
3062                  * until the next TBTT, we would have to set the probe
3063                  * response here.
3064                  *
3065                  * TODO: A channel switch with count <= 1 without
3066                  * sending a CSA action frame is kind of useless,
3067                  * because the clients won't know we're changing
3068                  * channels.  The action frame must be implemented
3069                  * either here or in the userspace.
3070                  */
3071                 if (params->count <= 1)
3072                         break;
3073
3074                 if ((params->n_counter_offsets_beacon >
3075                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3076                     (params->n_counter_offsets_presp >
3077                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3078                         return -EINVAL;
3079
3080                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3081                 csa.counter_offsets_presp = params->counter_offsets_presp;
3082                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3083                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3084                 csa.count = params->count;
3085
3086                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3087                 if (err < 0) {
3088                         kfree(sdata->u.ap.next_beacon);
3089                         return err;
3090                 }
3091                 *changed |= err;
3092
3093                 break;
3094         case NL80211_IFTYPE_ADHOC:
3095                 if (!sdata->vif.bss_conf.ibss_joined)
3096                         return -EINVAL;
3097
3098                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3099                         return -EINVAL;
3100
3101                 switch (params->chandef.width) {
3102                 case NL80211_CHAN_WIDTH_40:
3103                         if (cfg80211_get_chandef_type(&params->chandef) !=
3104                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3105                                 return -EINVAL;
3106                 case NL80211_CHAN_WIDTH_5:
3107                 case NL80211_CHAN_WIDTH_10:
3108                 case NL80211_CHAN_WIDTH_20_NOHT:
3109                 case NL80211_CHAN_WIDTH_20:
3110                         break;
3111                 default:
3112                         return -EINVAL;
3113                 }
3114
3115                 /* changes into another band are not supported */
3116                 if (sdata->u.ibss.chandef.chan->band !=
3117                     params->chandef.chan->band)
3118                         return -EINVAL;
3119
3120                 /* see comments in the NL80211_IFTYPE_AP block */
3121                 if (params->count > 1) {
3122                         err = ieee80211_ibss_csa_beacon(sdata, params);
3123                         if (err < 0)
3124                                 return err;
3125                         *changed |= err;
3126                 }
3127
3128                 ieee80211_send_action_csa(sdata, params);
3129
3130                 break;
3131 #ifdef CONFIG_MAC80211_MESH
3132         case NL80211_IFTYPE_MESH_POINT: {
3133                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3134
3135                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3136                         return -EINVAL;
3137
3138                 /* changes into another band are not supported */
3139                 if (sdata->vif.bss_conf.chandef.chan->band !=
3140                     params->chandef.chan->band)
3141                         return -EINVAL;
3142
3143                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3144                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3145                         if (!ifmsh->pre_value)
3146                                 ifmsh->pre_value = 1;
3147                         else
3148                                 ifmsh->pre_value++;
3149                 }
3150
3151                 /* see comments in the NL80211_IFTYPE_AP block */
3152                 if (params->count > 1) {
3153                         err = ieee80211_mesh_csa_beacon(sdata, params);
3154                         if (err < 0) {
3155                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3156                                 return err;
3157                         }
3158                         *changed |= err;
3159                 }
3160
3161                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3162                         ieee80211_send_action_csa(sdata, params);
3163
3164                 break;
3165                 }
3166 #endif
3167         default:
3168                 return -EOPNOTSUPP;
3169         }
3170
3171         return 0;
3172 }
3173
3174 static int
3175 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3176                            struct cfg80211_csa_settings *params)
3177 {
3178         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3179         struct ieee80211_local *local = sdata->local;
3180         struct ieee80211_channel_switch ch_switch;
3181         struct ieee80211_chanctx_conf *conf;
3182         struct ieee80211_chanctx *chanctx;
3183         u32 changed = 0;
3184         int err;
3185
3186         sdata_assert_lock(sdata);
3187         lockdep_assert_held(&local->mtx);
3188
3189         if (!list_empty(&local->roc_list) || local->scanning)
3190                 return -EBUSY;
3191
3192         if (sdata->wdev.cac_started)
3193                 return -EBUSY;
3194
3195         if (cfg80211_chandef_identical(&params->chandef,
3196                                        &sdata->vif.bss_conf.chandef))
3197                 return -EINVAL;
3198
3199         /* don't allow another channel switch if one is already active. */
3200         if (sdata->vif.csa_active)
3201                 return -EBUSY;
3202
3203         mutex_lock(&local->chanctx_mtx);
3204         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3205                                          lockdep_is_held(&local->chanctx_mtx));
3206         if (!conf) {
3207                 err = -EBUSY;
3208                 goto out;
3209         }
3210
3211         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3212         if (!chanctx) {
3213                 err = -EBUSY;
3214                 goto out;
3215         }
3216
3217         ch_switch.timestamp = 0;
3218         ch_switch.device_timestamp = 0;
3219         ch_switch.block_tx = params->block_tx;
3220         ch_switch.chandef = params->chandef;
3221         ch_switch.count = params->count;
3222
3223         err = drv_pre_channel_switch(sdata, &ch_switch);
3224         if (err)
3225                 goto out;
3226
3227         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3228                                             chanctx->mode,
3229                                             params->radar_required);
3230         if (err)
3231                 goto out;
3232
3233         /* if reservation is invalid then this will fail */
3234         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3235         if (err) {
3236                 ieee80211_vif_unreserve_chanctx(sdata);
3237                 goto out;
3238         }
3239
3240         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3241         if (err) {
3242                 ieee80211_vif_unreserve_chanctx(sdata);
3243                 goto out;
3244         }
3245
3246         sdata->csa_chandef = params->chandef;
3247         sdata->csa_block_tx = params->block_tx;
3248         sdata->vif.csa_active = true;
3249
3250         if (sdata->csa_block_tx)
3251                 ieee80211_stop_vif_queues(local, sdata,
3252                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3253
3254         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3255                                           params->count);
3256
3257         if (changed) {
3258                 ieee80211_bss_info_change_notify(sdata, changed);
3259                 drv_channel_switch_beacon(sdata, &params->chandef);
3260         } else {
3261                 /* if the beacon didn't change, we can finalize immediately */
3262                 ieee80211_csa_finalize(sdata);
3263         }
3264
3265 out:
3266         mutex_unlock(&local->chanctx_mtx);
3267         return err;
3268 }
3269
3270 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3271                              struct cfg80211_csa_settings *params)
3272 {
3273         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3274         struct ieee80211_local *local = sdata->local;
3275         int err;
3276
3277         mutex_lock(&local->mtx);
3278         err = __ieee80211_channel_switch(wiphy, dev, params);
3279         mutex_unlock(&local->mtx);
3280
3281         return err;
3282 }
3283
3284 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3285                              struct cfg80211_mgmt_tx_params *params,
3286                              u64 *cookie)
3287 {
3288         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3289         struct ieee80211_local *local = sdata->local;
3290         struct sk_buff *skb;
3291         struct sta_info *sta;
3292         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3293         bool need_offchan = false;
3294         u32 flags;
3295         int ret;
3296         u8 *data;
3297
3298         if (params->dont_wait_for_ack)
3299                 flags = IEEE80211_TX_CTL_NO_ACK;
3300         else
3301                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3302                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3303
3304         if (params->no_cck)
3305                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3306
3307         switch (sdata->vif.type) {
3308         case NL80211_IFTYPE_ADHOC:
3309                 if (!sdata->vif.bss_conf.ibss_joined)
3310                         need_offchan = true;
3311                 /* fall through */
3312 #ifdef CONFIG_MAC80211_MESH
3313         case NL80211_IFTYPE_MESH_POINT:
3314                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3315                     !sdata->u.mesh.mesh_id_len)
3316                         need_offchan = true;
3317                 /* fall through */
3318 #endif
3319         case NL80211_IFTYPE_AP:
3320         case NL80211_IFTYPE_AP_VLAN:
3321         case NL80211_IFTYPE_P2P_GO:
3322                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3323                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3324                     !rcu_access_pointer(sdata->bss->beacon))
3325                         need_offchan = true;
3326                 if (!ieee80211_is_action(mgmt->frame_control) ||
3327                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3328                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3329                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3330                         break;
3331                 rcu_read_lock();
3332                 sta = sta_info_get(sdata, mgmt->da);
3333                 rcu_read_unlock();
3334                 if (!sta)
3335                         return -ENOLINK;
3336                 break;
3337         case NL80211_IFTYPE_STATION:
3338         case NL80211_IFTYPE_P2P_CLIENT:
3339                 if (!sdata->u.mgd.associated)
3340                         need_offchan = true;
3341                 break;
3342         case NL80211_IFTYPE_P2P_DEVICE:
3343                 need_offchan = true;
3344                 break;
3345         default:
3346                 return -EOPNOTSUPP;
3347         }
3348
3349         /* configurations requiring offchan cannot work if no channel has been
3350          * specified
3351          */
3352         if (need_offchan && !params->chan)
3353                 return -EINVAL;
3354
3355         mutex_lock(&local->mtx);
3356
3357         /* Check if the operating channel is the requested channel */
3358         if (!need_offchan) {
3359                 struct ieee80211_chanctx_conf *chanctx_conf;
3360
3361                 rcu_read_lock();
3362                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3363
3364                 if (chanctx_conf) {
3365                         need_offchan = params->chan &&
3366                                        (params->chan !=
3367                                         chanctx_conf->def.chan);
3368                 } else if (!params->chan) {
3369                         ret = -EINVAL;
3370                         rcu_read_unlock();
3371                         goto out_unlock;
3372                 } else {
3373                         need_offchan = true;
3374                 }
3375                 rcu_read_unlock();
3376         }
3377
3378         if (need_offchan && !params->offchan) {
3379                 ret = -EBUSY;
3380                 goto out_unlock;
3381         }
3382
3383         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3384         if (!skb) {
3385                 ret = -ENOMEM;
3386                 goto out_unlock;
3387         }
3388         skb_reserve(skb, local->hw.extra_tx_headroom);
3389
3390         data = skb_put(skb, params->len);
3391         memcpy(data, params->buf, params->len);
3392
3393         /* Update CSA counters */
3394         if (sdata->vif.csa_active &&
3395             (sdata->vif.type == NL80211_IFTYPE_AP ||
3396              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3397             params->n_csa_offsets) {
3398                 int i;
3399                 struct beacon_data *beacon = NULL;
3400
3401                 rcu_read_lock();
3402
3403                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3404                         beacon = rcu_dereference(sdata->u.ap.beacon);
3405                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3406                         beacon = rcu_dereference(sdata->u.ibss.presp);
3407                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3408                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3409
3410                 if (beacon)
3411                         for (i = 0; i < params->n_csa_offsets; i++)
3412                                 data[params->csa_offsets[i]] =
3413                                         beacon->csa_current_counter;
3414
3415                 rcu_read_unlock();
3416         }
3417
3418         IEEE80211_SKB_CB(skb)->flags = flags;
3419
3420         skb->dev = sdata->dev;
3421
3422         if (!need_offchan) {
3423                 *cookie = (unsigned long) skb;
3424                 ieee80211_tx_skb(sdata, skb);
3425                 ret = 0;
3426                 goto out_unlock;
3427         }
3428
3429         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3430                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3431         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3432                 IEEE80211_SKB_CB(skb)->hw_queue =
3433                         local->hw.offchannel_tx_hw_queue;
3434
3435         /* This will handle all kinds of coalescing and immediate TX */
3436         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3437                                        params->wait, cookie, skb,
3438                                        IEEE80211_ROC_TYPE_MGMT_TX);
3439         if (ret)
3440                 kfree_skb(skb);
3441  out_unlock:
3442         mutex_unlock(&local->mtx);
3443         return ret;
3444 }
3445
3446 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3447                                          struct wireless_dev *wdev,
3448                                          u64 cookie)
3449 {
3450         struct ieee80211_local *local = wiphy_priv(wiphy);
3451
3452         return ieee80211_cancel_roc(local, cookie, true);
3453 }
3454
3455 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3456                                           struct wireless_dev *wdev,
3457                                           u16 frame_type, bool reg)
3458 {
3459         struct ieee80211_local *local = wiphy_priv(wiphy);
3460
3461         switch (frame_type) {
3462         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3463                 if (reg)
3464                         local->probe_req_reg++;
3465                 else
3466                         local->probe_req_reg--;
3467
3468                 if (!local->open_count)
3469                         break;
3470
3471                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3472                 break;
3473         default:
3474                 break;
3475         }
3476 }
3477
3478 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3479 {
3480         struct ieee80211_local *local = wiphy_priv(wiphy);
3481
3482         if (local->started)
3483                 return -EOPNOTSUPP;
3484
3485         return drv_set_antenna(local, tx_ant, rx_ant);
3486 }
3487
3488 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3489 {
3490         struct ieee80211_local *local = wiphy_priv(wiphy);
3491
3492         return drv_get_antenna(local, tx_ant, rx_ant);
3493 }
3494
3495 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3496                                     struct net_device *dev,
3497                                     struct cfg80211_gtk_rekey_data *data)
3498 {
3499         struct ieee80211_local *local = wiphy_priv(wiphy);
3500         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3501
3502         if (!local->ops->set_rekey_data)
3503                 return -EOPNOTSUPP;
3504
3505         drv_set_rekey_data(local, sdata, data);
3506
3507         return 0;
3508 }
3509
3510 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3511                                   const u8 *peer, u64 *cookie)
3512 {
3513         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3514         struct ieee80211_local *local = sdata->local;
3515         struct ieee80211_qos_hdr *nullfunc;
3516         struct sk_buff *skb;
3517         int size = sizeof(*nullfunc);
3518         __le16 fc;
3519         bool qos;
3520         struct ieee80211_tx_info *info;
3521         struct sta_info *sta;
3522         struct ieee80211_chanctx_conf *chanctx_conf;
3523         enum ieee80211_band band;
3524
3525         rcu_read_lock();
3526         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3527         if (WARN_ON(!chanctx_conf)) {
3528                 rcu_read_unlock();
3529                 return -EINVAL;
3530         }
3531         band = chanctx_conf->def.chan->band;
3532         sta = sta_info_get_bss(sdata, peer);
3533         if (sta) {
3534                 qos = sta->sta.wme;
3535         } else {
3536                 rcu_read_unlock();
3537                 return -ENOLINK;
3538         }
3539
3540         if (qos) {
3541                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3542                                  IEEE80211_STYPE_QOS_NULLFUNC |
3543                                  IEEE80211_FCTL_FROMDS);
3544         } else {
3545                 size -= 2;
3546                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3547                                  IEEE80211_STYPE_NULLFUNC |
3548                                  IEEE80211_FCTL_FROMDS);
3549         }
3550
3551         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3552         if (!skb) {
3553                 rcu_read_unlock();
3554                 return -ENOMEM;
3555         }
3556
3557         skb->dev = dev;
3558
3559         skb_reserve(skb, local->hw.extra_tx_headroom);
3560
3561         nullfunc = (void *) skb_put(skb, size);
3562         nullfunc->frame_control = fc;
3563         nullfunc->duration_id = 0;
3564         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3565         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3566         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3567         nullfunc->seq_ctrl = 0;
3568
3569         info = IEEE80211_SKB_CB(skb);
3570
3571         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3572                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3573         info->band = band;
3574
3575         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3576         skb->priority = 7;
3577         if (qos)
3578                 nullfunc->qos_ctrl = cpu_to_le16(7);
3579
3580         local_bh_disable();
3581         ieee80211_xmit(sdata, sta, skb);
3582         local_bh_enable();
3583         rcu_read_unlock();
3584
3585         *cookie = (unsigned long) skb;
3586         return 0;
3587 }
3588
3589 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3590                                      struct wireless_dev *wdev,
3591                                      struct cfg80211_chan_def *chandef)
3592 {
3593         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3594         struct ieee80211_local *local = wiphy_priv(wiphy);
3595         struct ieee80211_chanctx_conf *chanctx_conf;
3596         int ret = -ENODATA;
3597
3598         rcu_read_lock();
3599         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3600         if (chanctx_conf) {
3601                 *chandef = sdata->vif.bss_conf.chandef;
3602                 ret = 0;
3603         } else if (local->open_count > 0 &&
3604                    local->open_count == local->monitors &&
3605                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3606                 if (local->use_chanctx)
3607                         *chandef = local->monitor_chandef;
3608                 else
3609                         *chandef = local->_oper_chandef;
3610                 ret = 0;
3611         }
3612         rcu_read_unlock();
3613
3614         return ret;
3615 }
3616
3617 #ifdef CONFIG_PM
3618 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3619 {
3620         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3621 }
3622 #endif
3623
3624 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3625                                  struct net_device *dev,
3626                                  struct cfg80211_qos_map *qos_map)
3627 {
3628         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3629         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3630
3631         if (qos_map) {
3632                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3633                 if (!new_qos_map)
3634                         return -ENOMEM;
3635                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3636         } else {
3637                 /* A NULL qos_map was passed to disable QoS mapping */
3638                 new_qos_map = NULL;
3639         }
3640
3641         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3642         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3643         if (old_qos_map)
3644                 kfree_rcu(old_qos_map, rcu_head);
3645
3646         return 0;
3647 }
3648
3649 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3650                                       struct net_device *dev,
3651                                       struct cfg80211_chan_def *chandef)
3652 {
3653         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3654         int ret;
3655         u32 changed = 0;
3656
3657         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3658         if (ret == 0)
3659                 ieee80211_bss_info_change_notify(sdata, changed);
3660
3661         return ret;
3662 }
3663
3664 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3665                                u8 tsid, const u8 *peer, u8 up,
3666                                u16 admitted_time)
3667 {
3668         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3669         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3670         int ac = ieee802_1d_to_ac[up];
3671
3672         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3673                 return -EOPNOTSUPP;
3674
3675         if (!(sdata->wmm_acm & BIT(up)))
3676                 return -EINVAL;
3677
3678         if (ifmgd->tx_tspec[ac].admitted_time)
3679                 return -EBUSY;
3680
3681         if (admitted_time) {
3682                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3683                 ifmgd->tx_tspec[ac].tsid = tsid;
3684                 ifmgd->tx_tspec[ac].up = up;
3685         }
3686
3687         return 0;
3688 }
3689
3690 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3691                                u8 tsid, const u8 *peer)
3692 {
3693         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3694         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3695         struct ieee80211_local *local = wiphy_priv(wiphy);
3696         int ac;
3697
3698         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3699                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3700
3701                 /* skip unused entries */
3702                 if (!tx_tspec->admitted_time)
3703                         continue;
3704
3705                 if (tx_tspec->tsid != tsid)
3706                         continue;
3707
3708                 /* due to this new packets will be reassigned to non-ACM ACs */
3709                 tx_tspec->up = -1;
3710
3711                 /* Make sure that all packets have been sent to avoid to
3712                  * restore the QoS params on packets that are still on the
3713                  * queues.
3714                  */
3715                 synchronize_net();
3716                 ieee80211_flush_queues(local, sdata, false);
3717
3718                 /* restore the normal QoS parameters
3719                  * (unconditionally to avoid races)
3720                  */
3721                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3722                 tx_tspec->downgraded = false;
3723                 ieee80211_sta_handle_tspec_ac_params(sdata);
3724
3725                 /* finally clear all the data */
3726                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3727
3728                 return 0;
3729         }
3730
3731         return -ENOENT;
3732 }
3733
3734 const struct cfg80211_ops mac80211_config_ops = {
3735         .add_virtual_intf = ieee80211_add_iface,
3736         .del_virtual_intf = ieee80211_del_iface,
3737         .change_virtual_intf = ieee80211_change_iface,
3738         .start_p2p_device = ieee80211_start_p2p_device,
3739         .stop_p2p_device = ieee80211_stop_p2p_device,
3740         .add_key = ieee80211_add_key,
3741         .del_key = ieee80211_del_key,
3742         .get_key = ieee80211_get_key,
3743         .set_default_key = ieee80211_config_default_key,
3744         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3745         .start_ap = ieee80211_start_ap,
3746         .change_beacon = ieee80211_change_beacon,
3747         .stop_ap = ieee80211_stop_ap,
3748         .add_station = ieee80211_add_station,
3749         .del_station = ieee80211_del_station,
3750         .change_station = ieee80211_change_station,
3751         .get_station = ieee80211_get_station,
3752         .dump_station = ieee80211_dump_station,
3753         .dump_survey = ieee80211_dump_survey,
3754 #ifdef CONFIG_MAC80211_MESH
3755         .add_mpath = ieee80211_add_mpath,
3756         .del_mpath = ieee80211_del_mpath,
3757         .change_mpath = ieee80211_change_mpath,
3758         .get_mpath = ieee80211_get_mpath,
3759         .dump_mpath = ieee80211_dump_mpath,
3760         .get_mpp = ieee80211_get_mpp,
3761         .dump_mpp = ieee80211_dump_mpp,
3762         .update_mesh_config = ieee80211_update_mesh_config,
3763         .get_mesh_config = ieee80211_get_mesh_config,
3764         .join_mesh = ieee80211_join_mesh,
3765         .leave_mesh = ieee80211_leave_mesh,
3766 #endif
3767         .join_ocb = ieee80211_join_ocb,
3768         .leave_ocb = ieee80211_leave_ocb,
3769         .change_bss = ieee80211_change_bss,
3770         .set_txq_params = ieee80211_set_txq_params,
3771         .set_monitor_channel = ieee80211_set_monitor_channel,
3772         .suspend = ieee80211_suspend,
3773         .resume = ieee80211_resume,
3774         .scan = ieee80211_scan,
3775         .sched_scan_start = ieee80211_sched_scan_start,
3776         .sched_scan_stop = ieee80211_sched_scan_stop,
3777         .auth = ieee80211_auth,
3778         .assoc = ieee80211_assoc,
3779         .deauth = ieee80211_deauth,
3780         .disassoc = ieee80211_disassoc,
3781         .join_ibss = ieee80211_join_ibss,
3782         .leave_ibss = ieee80211_leave_ibss,
3783         .set_mcast_rate = ieee80211_set_mcast_rate,
3784         .set_wiphy_params = ieee80211_set_wiphy_params,
3785         .set_tx_power = ieee80211_set_tx_power,
3786         .get_tx_power = ieee80211_get_tx_power,
3787         .set_wds_peer = ieee80211_set_wds_peer,
3788         .rfkill_poll = ieee80211_rfkill_poll,
3789         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3790         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3791         .set_power_mgmt = ieee80211_set_power_mgmt,
3792         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3793         .remain_on_channel = ieee80211_remain_on_channel,
3794         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3795         .mgmt_tx = ieee80211_mgmt_tx,
3796         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3797         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3798         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3799         .set_antenna = ieee80211_set_antenna,
3800         .get_antenna = ieee80211_get_antenna,
3801         .set_rekey_data = ieee80211_set_rekey_data,
3802         .tdls_oper = ieee80211_tdls_oper,
3803         .tdls_mgmt = ieee80211_tdls_mgmt,
3804         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3805         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3806         .probe_client = ieee80211_probe_client,
3807         .set_noack_map = ieee80211_set_noack_map,
3808 #ifdef CONFIG_PM
3809         .set_wakeup = ieee80211_set_wakeup,
3810 #endif
3811         .get_channel = ieee80211_cfg_get_channel,
3812         .start_radar_detection = ieee80211_start_radar_detection,
3813         .channel_switch = ieee80211_channel_switch,
3814         .set_qos_map = ieee80211_set_qos_map,
3815         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3816         .add_tx_ts = ieee80211_add_tx_ts,
3817         .del_tx_ts = ieee80211_del_tx_ts,
3818 };