net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  *
   7  * This file is GPLv2 as found in COPYING.
   8  */
   9
  10 #include <linux/ieee80211.h>
  11 #include <linux/nl80211.h>
  12 #include <linux/rtnetlink.h>
  13 #include <linux/slab.h>
  14 #include <net/net_namespace.h>
  15 #include <linux/rcupdate.h>
  16 #include <linux/if_ether.h>
  17 #include <net/cfg80211.h>
  18 #include "ieee80211_i.h"
  19 #include "driver-ops.h"
  20 #include "cfg.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23 #include "wme.h"
  24
  25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  26                                                 const char *name,
  27                                                 enum nl80211_iftype type,
  28                                                 u32 *flags,
  29                                                 struct vif_params *params)
  30 {
  31         struct ieee80211_local *local = wiphy_priv(wiphy);
  32         struct wireless_dev *wdev;
  33         struct ieee80211_sub_if_data *sdata;
  34         int err;
  35
  36         err = ieee80211_if_add(local, name, &wdev, type, params);
  37         if (err)
  38                 return ERR_PTR(err);
  39
  40         if (type == NL80211_IFTYPE_MONITOR && flags) {
  41                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  42                 sdata->u.mntr_flags = *flags;
  43         }
  44
  45         return wdev;
  46 }
  47
  48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  49 {
  50         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  51
  52         return 0;
  53 }
  54
  55 static int ieee80211_change_iface(struct wiphy *wiphy,
  56                                   struct net_device *dev,
  57                                   enum nl80211_iftype type, u32 *flags,
  58                                   struct vif_params *params)
  59 {
  60         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  61         int ret;
  62
  63         ret = ieee80211_if_change_type(sdata, type);
  64         if (ret)
  65                 return ret;
  66
  67         if (type == NL80211_IFTYPE_AP_VLAN &&
  68             params && params->use_4addr == 0)
  69                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  70         else if (type == NL80211_IFTYPE_STATION &&
  71                  params && params->use_4addr >= 0)
  72                 sdata->u.mgd.use_4addr = params->use_4addr;
  73
  74         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  75                 struct ieee80211_local *local = sdata->local;
  76
  77                 if (ieee80211_sdata_running(sdata)) {
  78                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  79                                    MONITOR_FLAG_ACTIVE;
  80
  81                         /*
  82                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  83                          * MONITOR_FLAG_ACTIVE to be changed while the
  84                          * interface is up.
  85                          * Else we would need to add a lot of cruft
  86                          * to update everything:
  87                          *      cooked_mntrs, monitor and all fif_* counters
  88                          *      reconfigure hardware
  89                          */
  90                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  91                                 return -EBUSY;
  92
  93                         ieee80211_adjust_monitor_flags(sdata, -1);
  94                         sdata->u.mntr_flags = *flags;
  95                         ieee80211_adjust_monitor_flags(sdata, 1);
  96
  97                         ieee80211_configure_filter(local);
  98                 } else {
  99                         /*
 100                          * Because the interface is down, ieee80211_do_stop
 101                          * and ieee80211_do_open take care of "everything"
 102                          * mentioned in the comment above.
 103                          */
 104                         sdata->u.mntr_flags = *flags;
 105                 }
 106         }
 107
 108         return 0;
 109 }
 110
 111 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 112                                       struct wireless_dev *wdev)
 113 {
 114         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 115         int ret;
 116
 117         mutex_lock(&sdata->local->chanctx_mtx);
 118         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 119         mutex_unlock(&sdata->local->chanctx_mtx);
 120         if (ret < 0)
 121                 return ret;
 122
 123         return ieee80211_do_open(wdev, true);
 124 }
 125
 126 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 127                                       struct wireless_dev *wdev)
 128 {
 129         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 130 }
 131
 132 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 133                                   struct net_device *dev,
 134                                   u16 noack_map)
 135 {
 136         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 137
 138         sdata->noack_map = noack_map;
 139         return 0;
 140 }
 141
 142 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 143                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 144                              struct key_params *params)
 145 {
 146         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 147         struct ieee80211_local *local = sdata->local;
 148         struct sta_info *sta = NULL;
 149         const struct ieee80211_cipher_scheme *cs = NULL;
 150         struct ieee80211_key *key;
 151         int err;
 152
 153         if (!ieee80211_sdata_running(sdata))
 154                 return -ENETDOWN;
 155
 156         /* reject WEP and TKIP keys if WEP failed to initialize */
 157         switch (params->cipher) {
 158         case WLAN_CIPHER_SUITE_WEP40:
 159         case WLAN_CIPHER_SUITE_TKIP:
 160         case WLAN_CIPHER_SUITE_WEP104:
 161                 if (IS_ERR(local->wep_tx_tfm))
 162                         return -EINVAL;
 163                 break;
 164         case WLAN_CIPHER_SUITE_CCMP:
 165         case WLAN_CIPHER_SUITE_AES_CMAC:
 166         case WLAN_CIPHER_SUITE_GCMP:
 167                 break;
 168         default:
 169                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 170                 break;
 171         }
 172
 173         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 174                                   params->key, params->seq_len, params->seq,
 175                                   cs);
 176         if (IS_ERR(key))
 177                 return PTR_ERR(key);
 178
 179         if (pairwise)
 180                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 181
 182         mutex_lock(&local->sta_mtx);
 183
 184         if (mac_addr) {
 185                 if (ieee80211_vif_is_mesh(&sdata->vif))
 186                         sta = sta_info_get(sdata, mac_addr);
 187                 else
 188                         sta = sta_info_get_bss(sdata, mac_addr);
 189                 /*
 190                  * The ASSOC test makes sure the driver is ready to
 191                  * receive the key. When wpa_supplicant has roamed
 192                  * using FT, it attempts to set the key before
 193                  * association has completed, this rejects that attempt
 194                  * so it will set the key again after association.
 195                  *
 196                  * TODO: accept the key if we have a station entry and
 197                  *       add it to the device after the station.
 198                  */
 199                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 200                         ieee80211_key_free_unused(key);
 201                         err = -ENOENT;
 202                         goto out_unlock;
 203                 }
 204         }
 205
 206         switch (sdata->vif.type) {
 207         case NL80211_IFTYPE_STATION:
 208                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 209                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 210                 break;
 211         case NL80211_IFTYPE_AP:
 212         case NL80211_IFTYPE_AP_VLAN:
 213                 /* Keys without a station are used for TX only */
 214                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 215                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 216                 break;
 217         case NL80211_IFTYPE_ADHOC:
 218                 /* no MFP (yet) */
 219                 break;
 220         case NL80211_IFTYPE_MESH_POINT:
 221 #ifdef CONFIG_MAC80211_MESH
 222                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 223                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 224                 break;
 225 #endif
 226         case NL80211_IFTYPE_WDS:
 227         case NL80211_IFTYPE_MONITOR:
 228         case NL80211_IFTYPE_P2P_DEVICE:
 229         case NL80211_IFTYPE_UNSPECIFIED:
 230         case NUM_NL80211_IFTYPES:
 231         case NL80211_IFTYPE_P2P_CLIENT:
 232         case NL80211_IFTYPE_P2P_GO:
 233         case NL80211_IFTYPE_OCB:
 234                 /* shouldn't happen */
 235                 WARN_ON_ONCE(1);
 236                 break;
 237         }
 238
 239         if (sta)
 240                 sta->cipher_scheme = cs;
 241
 242         err = ieee80211_key_link(key, sdata, sta);
 243
 244  out_unlock:
 245         mutex_unlock(&local->sta_mtx);
 246
 247         return err;
 248 }
 249
 250 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 251                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 252 {
 253         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 254         struct ieee80211_local *local = sdata->local;
 255         struct sta_info *sta;
 256         struct ieee80211_key *key = NULL;
 257         int ret;
 258
 259         mutex_lock(&local->sta_mtx);
 260         mutex_lock(&local->key_mtx);
 261
 262         if (mac_addr) {
 263                 ret = -ENOENT;
 264
 265                 sta = sta_info_get_bss(sdata, mac_addr);
 266                 if (!sta)
 267                         goto out_unlock;
 268
 269                 if (pairwise)
 270                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 271                 else
 272                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 273         } else
 274                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 275
 276         if (!key) {
 277                 ret = -ENOENT;
 278                 goto out_unlock;
 279         }
 280
 281         ieee80211_key_free(key, true);
 282
 283         ret = 0;
 284  out_unlock:
 285         mutex_unlock(&local->key_mtx);
 286         mutex_unlock(&local->sta_mtx);
 287
 288         return ret;
 289 }
 290
 291 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 292                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 293                              void *cookie,
 294                              void (*callback)(void *cookie,
 295                                               struct key_params *params))
 296 {
 297         struct ieee80211_sub_if_data *sdata;
 298         struct sta_info *sta = NULL;
 299         u8 seq[6] = {0};
 300         struct key_params params;
 301         struct ieee80211_key *key = NULL;
 302         u64 pn64;
 303         u32 iv32;
 304         u16 iv16;
 305         int err = -ENOENT;
 306
 307         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 308
 309         rcu_read_lock();
 310
 311         if (mac_addr) {
 312                 sta = sta_info_get_bss(sdata, mac_addr);
 313                 if (!sta)
 314                         goto out;
 315
 316                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 317                         key = rcu_dereference(sta->ptk[key_idx]);
 318                 else if (!pairwise &&
 319                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 320                         key = rcu_dereference(sta->gtk[key_idx]);
 321         } else
 322                 key = rcu_dereference(sdata->keys[key_idx]);
 323
 324         if (!key)
 325                 goto out;
 326
 327         memset(&params, 0, sizeof(params));
 328
 329         params.cipher = key->conf.cipher;
 330
 331         switch (key->conf.cipher) {
 332         case WLAN_CIPHER_SUITE_TKIP:
 333                 iv32 = key->u.tkip.tx.iv32;
 334                 iv16 = key->u.tkip.tx.iv16;
 335
 336                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 337                         drv_get_tkip_seq(sdata->local,
 338                                          key->conf.hw_key_idx,
 339                                          &iv32, &iv16);
 340
 341                 seq[0] = iv16 & 0xff;
 342                 seq[1] = (iv16 >> 8) & 0xff;
 343                 seq[2] = iv32 & 0xff;
 344                 seq[3] = (iv32 >> 8) & 0xff;
 345                 seq[4] = (iv32 >> 16) & 0xff;
 346                 seq[5] = (iv32 >> 24) & 0xff;
 347                 params.seq = seq;
 348                 params.seq_len = 6;
 349                 break;
 350         case WLAN_CIPHER_SUITE_CCMP:
 351                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 352                 seq[0] = pn64;
 353                 seq[1] = pn64 >> 8;
 354                 seq[2] = pn64 >> 16;
 355                 seq[3] = pn64 >> 24;
 356                 seq[4] = pn64 >> 32;
 357                 seq[5] = pn64 >> 40;
 358                 params.seq = seq;
 359                 params.seq_len = 6;
 360                 break;
 361         case WLAN_CIPHER_SUITE_AES_CMAC:
 362                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 363                 seq[0] = pn64;
 364                 seq[1] = pn64 >> 8;
 365                 seq[2] = pn64 >> 16;
 366                 seq[3] = pn64 >> 24;
 367                 seq[4] = pn64 >> 32;
 368                 seq[5] = pn64 >> 40;
 369                 params.seq = seq;
 370                 params.seq_len = 6;
 371                 break;
 372         }
 373
 374         params.key = key->conf.key;
 375         params.key_len = key->conf.keylen;
 376
 377         callback(cookie, &params);
 378         err = 0;
 379
 380  out:
 381         rcu_read_unlock();
 382         return err;
 383 }
 384
 385 static int ieee80211_config_default_key(struct wiphy *wiphy,
 386                                         struct net_device *dev,
 387                                         u8 key_idx, bool uni,
 388                                         bool multi)
 389 {
 390         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 391
 392         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 393
 394         return 0;
 395 }
 396
 397 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 398                                              struct net_device *dev,
 399                                              u8 key_idx)
 400 {
 401         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 402
 403         ieee80211_set_default_mgmt_key(sdata, key_idx);
 404
 405         return 0;
 406 }
 407
 408 void sta_set_rate_info_tx(struct sta_info *sta,
 409                           const struct ieee80211_tx_rate *rate,
 410                           struct rate_info *rinfo)
 411 {
 412         rinfo->flags = 0;
 413         if (rate->flags & IEEE80211_TX_RC_MCS) {
 414                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 415                 rinfo->mcs = rate->idx;
 416         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 417                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 418                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 419                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 420         } else {
 421                 struct ieee80211_supported_band *sband;
 422                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 423                 u16 brate;
 424
 425                 sband = sta->local->hw.wiphy->bands[
 426                                 ieee80211_get_sdata_band(sta->sdata)];
 427                 brate = sband->bitrates[rate->idx].bitrate;
 428                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 429         }
 430         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 431                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 432         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 433                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 434         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 435                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 436         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 437                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 438 }
 439
 440 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 441 {
 442         rinfo->flags = 0;
 443
 444         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 445                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 446                 rinfo->mcs = sta->last_rx_rate_idx;
 447         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 448                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 449                 rinfo->nss = sta->last_rx_rate_vht_nss;
 450                 rinfo->mcs = sta->last_rx_rate_idx;
 451         } else {
 452                 struct ieee80211_supported_band *sband;
 453                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 454                 u16 brate;
 455
 456                 sband = sta->local->hw.wiphy->bands[
 457                                 ieee80211_get_sdata_band(sta->sdata)];
 458                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 459                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 460         }
 461
 462         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 463                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 464         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 465                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 466         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 467                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 468         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ)
 469                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 470         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 471                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 472 }
 473
 474 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 475                                   int idx, u8 *mac, struct station_info *sinfo)
 476 {
 477         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 478         struct ieee80211_local *local = sdata->local;
 479         struct sta_info *sta;
 480         int ret = -ENOENT;
 481
 482         mutex_lock(&local->sta_mtx);
 483
 484         sta = sta_info_get_by_idx(sdata, idx);
 485         if (sta) {
 486                 ret = 0;
 487                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 488                 sta_set_sinfo(sta, sinfo);
 489         }
 490
 491         mutex_unlock(&local->sta_mtx);
 492
 493         return ret;
 494 }
 495
 496 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 497                                  int idx, struct survey_info *survey)
 498 {
 499         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 500
 501         return drv_get_survey(local, idx, survey);
 502 }
 503
 504 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 505                                  const u8 *mac, struct station_info *sinfo)
 506 {
 507         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 508         struct ieee80211_local *local = sdata->local;
 509         struct sta_info *sta;
 510         int ret = -ENOENT;
 511
 512         mutex_lock(&local->sta_mtx);
 513
 514         sta = sta_info_get_bss(sdata, mac);
 515         if (sta) {
 516                 ret = 0;
 517                 sta_set_sinfo(sta, sinfo);
 518         }
 519
 520         mutex_unlock(&local->sta_mtx);
 521
 522         return ret;
 523 }
 524
 525 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 526                                          struct cfg80211_chan_def *chandef)
 527 {
 528         struct ieee80211_local *local = wiphy_priv(wiphy);
 529         struct ieee80211_sub_if_data *sdata;
 530         int ret = 0;
 531
 532         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 533                 return 0;
 534
 535         mutex_lock(&local->mtx);
 536         mutex_lock(&local->iflist_mtx);
 537         if (local->use_chanctx) {
 538                 sdata = rcu_dereference_protected(
 539                                 local->monitor_sdata,
 540                                 lockdep_is_held(&local->iflist_mtx));
 541                 if (sdata) {
 542                         ieee80211_vif_release_channel(sdata);
 543                         ret = ieee80211_vif_use_channel(sdata, chandef,
 544                                         IEEE80211_CHANCTX_EXCLUSIVE);
 545                 }
 546         } else if (local->open_count == local->monitors) {
 547                 local->_oper_chandef = *chandef;
 548                 ieee80211_hw_config(local, 0);
 549         }
 550
 551         if (ret == 0)
 552                 local->monitor_chandef = *chandef;
 553         mutex_unlock(&local->iflist_mtx);
 554         mutex_unlock(&local->mtx);
 555
 556         return ret;
 557 }
 558
 559 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 560                                     const u8 *resp, size_t resp_len,
 561                                     const struct ieee80211_csa_settings *csa)
 562 {
 563         struct probe_resp *new, *old;
 564
 565         if (!resp || !resp_len)
 566                 return 1;
 567
 568         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 569
 570         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 571         if (!new)
 572                 return -ENOMEM;
 573
 574         new->len = resp_len;
 575         memcpy(new->data, resp, resp_len);
 576
 577         if (csa)
 578                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 579                        csa->n_counter_offsets_presp *
 580                        sizeof(new->csa_counter_offsets[0]));
 581
 582         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 583         if (old)
 584                 kfree_rcu(old, rcu_head);
 585
 586         return 0;
 587 }
 588
 589 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 590                                    struct cfg80211_beacon_data *params,
 591                                    const struct ieee80211_csa_settings *csa)
 592 {
 593         struct beacon_data *new, *old;
 594         int new_head_len, new_tail_len;
 595         int size, err;
 596         u32 changed = BSS_CHANGED_BEACON;
 597
 598         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 599
 600
 601         /* Need to have a beacon head if we don't have one yet */
 602         if (!params->head && !old)
 603                 return -EINVAL;
 604
 605         /* new or old head? */
 606         if (params->head)
 607                 new_head_len = params->head_len;
 608         else
 609                 new_head_len = old->head_len;
 610
 611         /* new or old tail? */
 612         if (params->tail || !old)
 613                 /* params->tail_len will be zero for !params->tail */
 614                 new_tail_len = params->tail_len;
 615         else
 616                 new_tail_len = old->tail_len;
 617
 618         size = sizeof(*new) + new_head_len + new_tail_len;
 619
 620         new = kzalloc(size, GFP_KERNEL);
 621         if (!new)
 622                 return -ENOMEM;
 623
 624         /* start filling the new info now */
 625
 626         /*
 627          * pointers go into the block we allocated,
 628          * memory is | beacon_data | head | tail |
 629          */
 630         new->head = ((u8 *) new) + sizeof(*new);
 631         new->tail = new->head + new_head_len;
 632         new->head_len = new_head_len;
 633         new->tail_len = new_tail_len;
 634
 635         if (csa) {
 636                 new->csa_current_counter = csa->count;
 637                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 638                        csa->n_counter_offsets_beacon *
 639                        sizeof(new->csa_counter_offsets[0]));
 640         }
 641
 642         /* copy in head */
 643         if (params->head)
 644                 memcpy(new->head, params->head, new_head_len);
 645         else
 646                 memcpy(new->head, old->head, new_head_len);
 647
 648         /* copy in optional tail */
 649         if (params->tail)
 650                 memcpy(new->tail, params->tail, new_tail_len);
 651         else
 652                 if (old)
 653                         memcpy(new->tail, old->tail, new_tail_len);
 654
 655         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 656                                        params->probe_resp_len, csa);
 657         if (err < 0)
 658                 return err;
 659         if (err == 0)
 660                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 661
 662         rcu_assign_pointer(sdata->u.ap.beacon, new);
 663
 664         if (old)
 665                 kfree_rcu(old, rcu_head);
 666
 667         return changed;
 668 }
 669
 670 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 671                               struct cfg80211_ap_settings *params)
 672 {
 673         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 674         struct ieee80211_local *local = sdata->local;
 675         struct beacon_data *old;
 676         struct ieee80211_sub_if_data *vlan;
 677         u32 changed = BSS_CHANGED_BEACON_INT |
 678                       BSS_CHANGED_BEACON_ENABLED |
 679                       BSS_CHANGED_BEACON |
 680                       BSS_CHANGED_SSID |
 681                       BSS_CHANGED_P2P_PS;
 682         int err;
 683
 684         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 685         if (old)
 686                 return -EALREADY;
 687
 688         switch (params->smps_mode) {
 689         case NL80211_SMPS_OFF:
 690                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 691                 break;
 692         case NL80211_SMPS_STATIC:
 693                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 694                 break;
 695         case NL80211_SMPS_DYNAMIC:
 696                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 697                 break;
 698         default:
 699                 return -EINVAL;
 700         }
 701         sdata->needed_rx_chains = sdata->local->rx_chains;
 702
 703         mutex_lock(&local->mtx);
 704         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 705                                         IEEE80211_CHANCTX_SHARED);
 706         if (!err)
 707                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 708         mutex_unlock(&local->mtx);
 709         if (err)
 710                 return err;
 711
 712         /*
 713          * Apply control port protocol, this allows us to
 714          * not encrypt dynamic WEP control frames.
 715          */
 716         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 717         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 718         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 719                                                         &params->crypto,
 720                                                         sdata->vif.type);
 721
 722         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 723                 vlan->control_port_protocol =
 724                         params->crypto.control_port_ethertype;
 725                 vlan->control_port_no_encrypt =
 726                         params->crypto.control_port_no_encrypt;
 727                 vlan->encrypt_headroom =
 728                         ieee80211_cs_headroom(sdata->local,
 729                                               &params->crypto,
 730                                               vlan->vif.type);
 731         }
 732
 733         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 734         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 735         sdata->vif.bss_conf.enable_beacon = true;
 736
 737         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 738         if (params->ssid_len)
 739                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 740                        params->ssid_len);
 741         sdata->vif.bss_conf.hidden_ssid =
 742                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 743
 744         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 745                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 746         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 747                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 748         if (params->p2p_opp_ps)
 749                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 750                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 751
 752         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 753         if (err < 0) {
 754                 ieee80211_vif_release_channel(sdata);
 755                 return err;
 756         }
 757         changed |= err;
 758
 759         err = drv_start_ap(sdata->local, sdata);
 760         if (err) {
 761                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 762
 763                 if (old)
 764                         kfree_rcu(old, rcu_head);
 765                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 766                 ieee80211_vif_release_channel(sdata);
 767                 return err;
 768         }
 769
 770         ieee80211_recalc_dtim(local, sdata);
 771         ieee80211_bss_info_change_notify(sdata, changed);
 772
 773         netif_carrier_on(dev);
 774         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 775                 netif_carrier_on(vlan->dev);
 776
 777         return 0;
 778 }
 779
 780 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 781                                    struct cfg80211_beacon_data *params)
 782 {
 783         struct ieee80211_sub_if_data *sdata;
 784         struct beacon_data *old;
 785         int err;
 786
 787         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 788         sdata_assert_lock(sdata);
 789
 790         /* don't allow changing the beacon while CSA is in place - offset
 791          * of channel switch counter may change
 792          */
 793         if (sdata->vif.csa_active)
 794                 return -EBUSY;
 795
 796         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 797         if (!old)
 798                 return -ENOENT;
 799
 800         err = ieee80211_assign_beacon(sdata, params, NULL);
 801         if (err < 0)
 802                 return err;
 803         ieee80211_bss_info_change_notify(sdata, err);
 804         return 0;
 805 }
 806
 807 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 808 {
 809         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 810         struct ieee80211_sub_if_data *vlan;
 811         struct ieee80211_local *local = sdata->local;
 812         struct beacon_data *old_beacon;
 813         struct probe_resp *old_probe_resp;
 814         struct cfg80211_chan_def chandef;
 815
 816         sdata_assert_lock(sdata);
 817
 818         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 819         if (!old_beacon)
 820                 return -ENOENT;
 821         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 822
 823         /* abort any running channel switch */
 824         mutex_lock(&local->mtx);
 825         sdata->vif.csa_active = false;
 826         if (sdata->csa_block_tx) {
 827                 ieee80211_wake_vif_queues(local, sdata,
 828                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 829                 sdata->csa_block_tx = false;
 830         }
 831
 832         mutex_unlock(&local->mtx);
 833
 834         kfree(sdata->u.ap.next_beacon);
 835         sdata->u.ap.next_beacon = NULL;
 836
 837         /* turn off carrier for this interface and dependent VLANs */
 838         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 839                 netif_carrier_off(vlan->dev);
 840         netif_carrier_off(dev);
 841
 842         /* remove beacon and probe response */
 843         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 844         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 845         kfree_rcu(old_beacon, rcu_head);
 846         if (old_probe_resp)
 847                 kfree_rcu(old_probe_resp, rcu_head);
 848         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 849
 850         __sta_info_flush(sdata, true);
 851         ieee80211_free_keys(sdata, true);
 852
 853         sdata->vif.bss_conf.enable_beacon = false;
 854         sdata->vif.bss_conf.ssid_len = 0;
 855         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 856         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 857
 858         if (sdata->wdev.cac_started) {
 859                 chandef = sdata->vif.bss_conf.chandef;
 860                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 861                 cfg80211_cac_event(sdata->dev, &chandef,
 862                                    NL80211_RADAR_CAC_ABORTED,
 863                                    GFP_KERNEL);
 864         }
 865
 866         drv_stop_ap(sdata->local, sdata);
 867
 868         /* free all potentially still buffered bcast frames */
 869         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 870         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 871
 872         mutex_lock(&local->mtx);
 873         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 874         ieee80211_vif_release_channel(sdata);
 875         mutex_unlock(&local->mtx);
 876
 877         return 0;
 878 }
 879
 880 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 881 struct iapp_layer2_update {
 882         u8 da[ETH_ALEN];        /* broadcast */
 883         u8 sa[ETH_ALEN];        /* STA addr */
 884         __be16 len;             /* 6 */
 885         u8 dsap;                /* 0 */
 886         u8 ssap;                /* 0 */
 887         u8 control;
 888         u8 xid_info[3];
 889 } __packed;
 890
 891 static void ieee80211_send_layer2_update(struct sta_info *sta)
 892 {
 893         struct iapp_layer2_update *msg;
 894         struct sk_buff *skb;
 895
 896         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 897          * bridge devices */
 898
 899         skb = dev_alloc_skb(sizeof(*msg));
 900         if (!skb)
 901                 return;
 902         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 903
 904         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 905          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 906
 907         eth_broadcast_addr(msg->da);
 908         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 909         msg->len = htons(6);
 910         msg->dsap = 0;
 911         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 912         msg->control = 0xaf;    /* XID response lsb.1111F101.
 913                                  * F=0 (no poll command; unsolicited frame) */
 914         msg->xid_info[0] = 0x81;        /* XID format identifier */
 915         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 916         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 917
 918         skb->dev = sta->sdata->dev;
 919         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 920         memset(skb->cb, 0, sizeof(skb->cb));
 921         netif_rx_ni(skb);
 922 }
 923
 924 static int sta_apply_auth_flags(struct ieee80211_local *local,
 925                                 struct sta_info *sta,
 926                                 u32 mask, u32 set)
 927 {
 928         int ret;
 929
 930         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 931             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 932             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 933                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 934                 if (ret)
 935                         return ret;
 936         }
 937
 938         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 939             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 940             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 941                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 942                 if (ret)
 943                         return ret;
 944         }
 945
 946         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 947                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 948                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 949                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 950                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 951                 else
 952                         ret = 0;
 953                 if (ret)
 954                         return ret;
 955         }
 956
 957         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 958             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
 959             test_sta_flag(sta, WLAN_STA_ASSOC)) {
 960                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 961                 if (ret)
 962                         return ret;
 963         }
 964
 965         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 966             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 967             test_sta_flag(sta, WLAN_STA_AUTH)) {
 968                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 969                 if (ret)
 970                         return ret;
 971         }
 972
 973         return 0;
 974 }
 975
 976 static int sta_apply_parameters(struct ieee80211_local *local,
 977                                 struct sta_info *sta,
 978                                 struct station_parameters *params)
 979 {
 980         int ret = 0;
 981         struct ieee80211_supported_band *sband;
 982         struct ieee80211_sub_if_data *sdata = sta->sdata;
 983         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
 984         u32 mask, set;
 985
 986         sband = local->hw.wiphy->bands[band];
 987
 988         mask = params->sta_flags_mask;
 989         set = params->sta_flags_set;
 990
 991         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 992                 /*
 993                  * In mesh mode, ASSOCIATED isn't part of the nl80211
 994                  * API but must follow AUTHENTICATED for driver state.
 995                  */
 996                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 997                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 998                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 999                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1000         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1001                 /*
1002                  * TDLS -- everything follows authorized, but
1003                  * only becoming authorized is possible, not
1004                  * going back
1005                  */
1006                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1007                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1008                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1009                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1010                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1011                 }
1012         }
1013
1014         /* auth flags will be set later for TDLS stations */
1015         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1016                 ret = sta_apply_auth_flags(local, sta, mask, set);
1017                 if (ret)
1018                         return ret;
1019         }
1020
1021         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1022                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1023                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1024                 else
1025                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1026         }
1027
1028         if (mask & BIT(NL80211_STA_FLAG_WME))
1029                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1030
1031         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1032                 if (set & BIT(NL80211_STA_FLAG_MFP))
1033                         set_sta_flag(sta, WLAN_STA_MFP);
1034                 else
1035                         clear_sta_flag(sta, WLAN_STA_MFP);
1036         }
1037
1038         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1039                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1040                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1041                 else
1042                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1043         }
1044
1045         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1046                 sta->sta.uapsd_queues = params->uapsd_queues;
1047                 sta->sta.max_sp = params->max_sp;
1048         }
1049
1050         /*
1051          * cfg80211 validates this (1-2007) and allows setting the AID
1052          * only when creating a new station entry
1053          */
1054         if (params->aid)
1055                 sta->sta.aid = params->aid;
1056
1057         /*
1058          * Some of the following updates would be racy if called on an
1059          * existing station, via ieee80211_change_station(). However,
1060          * all such changes are rejected by cfg80211 except for updates
1061          * changing the supported rates on an existing but not yet used
1062          * TDLS peer.
1063          */
1064
1065         if (params->listen_interval >= 0)
1066                 sta->listen_interval = params->listen_interval;
1067
1068         if (params->supported_rates) {
1069                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1070                                          sband, params->supported_rates,
1071                                          params->supported_rates_len,
1072                                          &sta->sta.supp_rates[band]);
1073         }
1074
1075         if (params->ht_capa)
1076                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1077                                                   params->ht_capa, sta);
1078
1079         if (params->vht_capa)
1080                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1081                                                     params->vht_capa, sta);
1082
1083         if (params->opmode_notif_used) {
1084                 /* returned value is only needed for rc update, but the
1085                  * rc isn't initialized here yet, so ignore it
1086                  */
1087                 __ieee80211_vht_handle_opmode(sdata, sta,
1088                                               params->opmode_notif,
1089                                               band, false);
1090         }
1091
1092         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1093 #ifdef CONFIG_MAC80211_MESH
1094                 u32 changed = 0;
1095
1096                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1097                         switch (params->plink_state) {
1098                         case NL80211_PLINK_ESTAB:
1099                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1100                                         changed = mesh_plink_inc_estab_count(
1101                                                         sdata);
1102                                 sta->plink_state = params->plink_state;
1103
1104                                 ieee80211_mps_sta_status_update(sta);
1105                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1106                                               sdata->u.mesh.mshcfg.power_mode);
1107                                 break;
1108                         case NL80211_PLINK_LISTEN:
1109                         case NL80211_PLINK_BLOCKED:
1110                         case NL80211_PLINK_OPN_SNT:
1111                         case NL80211_PLINK_OPN_RCVD:
1112                         case NL80211_PLINK_CNF_RCVD:
1113                         case NL80211_PLINK_HOLDING:
1114                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1115                                         changed = mesh_plink_dec_estab_count(
1116                                                         sdata);
1117                                 sta->plink_state = params->plink_state;
1118
1119                                 ieee80211_mps_sta_status_update(sta);
1120                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1121                                                 NL80211_MESH_POWER_UNKNOWN);
1122                                 break;
1123                         default:
1124                                 /*  nothing  */
1125                                 break;
1126                         }
1127                 }
1128
1129                 switch (params->plink_action) {
1130                 case NL80211_PLINK_ACTION_NO_ACTION:
1131                         /* nothing */
1132                         break;
1133                 case NL80211_PLINK_ACTION_OPEN:
1134                         changed |= mesh_plink_open(sta);
1135                         break;
1136                 case NL80211_PLINK_ACTION_BLOCK:
1137                         changed |= mesh_plink_block(sta);
1138                         break;
1139                 }
1140
1141                 if (params->local_pm)
1142                         changed |=
1143                               ieee80211_mps_set_sta_local_pm(sta,
1144                                                              params->local_pm);
1145                 ieee80211_mbss_info_change_notify(sdata, changed);
1146 #endif
1147         }
1148
1149         /* set the STA state after all sta info from usermode has been set */
1150         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1151                 ret = sta_apply_auth_flags(local, sta, mask, set);
1152                 if (ret)
1153                         return ret;
1154         }
1155
1156         return 0;
1157 }
1158
1159 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1160                                  const u8 *mac,
1161                                  struct station_parameters *params)
1162 {
1163         struct ieee80211_local *local = wiphy_priv(wiphy);
1164         struct sta_info *sta;
1165         struct ieee80211_sub_if_data *sdata;
1166         int err;
1167         int layer2_update;
1168
1169         if (params->vlan) {
1170                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1171
1172                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1173                     sdata->vif.type != NL80211_IFTYPE_AP)
1174                         return -EINVAL;
1175         } else
1176                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1177
1178         if (ether_addr_equal(mac, sdata->vif.addr))
1179                 return -EINVAL;
1180
1181         if (is_multicast_ether_addr(mac))
1182                 return -EINVAL;
1183
1184         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1185         if (!sta)
1186                 return -ENOMEM;
1187
1188         /*
1189          * defaults -- if userspace wants something else we'll
1190          * change it accordingly in sta_apply_parameters()
1191          */
1192         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1193                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1194                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1195         } else {
1196                 sta->sta.tdls = true;
1197         }
1198
1199         err = sta_apply_parameters(local, sta, params);
1200         if (err) {
1201                 sta_info_free(local, sta);
1202                 return err;
1203         }
1204
1205         /*
1206          * for TDLS, rate control should be initialized only when
1207          * rates are known and station is marked authorized
1208          */
1209         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1210                 rate_control_rate_init(sta);
1211
1212         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1213                 sdata->vif.type == NL80211_IFTYPE_AP;
1214
1215         err = sta_info_insert_rcu(sta);
1216         if (err) {
1217                 rcu_read_unlock();
1218                 return err;
1219         }
1220
1221         if (layer2_update)
1222                 ieee80211_send_layer2_update(sta);
1223
1224         rcu_read_unlock();
1225
1226         return 0;
1227 }
1228
1229 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1230                                  struct station_del_parameters *params)
1231 {
1232         struct ieee80211_sub_if_data *sdata;
1233
1234         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1235
1236         if (params->mac)
1237                 return sta_info_destroy_addr_bss(sdata, params->mac);
1238
1239         sta_info_flush(sdata);
1240         return 0;
1241 }
1242
1243 static int ieee80211_change_station(struct wiphy *wiphy,
1244                                     struct net_device *dev, const u8 *mac,
1245                                     struct station_parameters *params)
1246 {
1247         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1248         struct ieee80211_local *local = wiphy_priv(wiphy);
1249         struct sta_info *sta;
1250         struct ieee80211_sub_if_data *vlansdata;
1251         enum cfg80211_station_type statype;
1252         int err;
1253
1254         mutex_lock(&local->sta_mtx);
1255
1256         sta = sta_info_get_bss(sdata, mac);
1257         if (!sta) {
1258                 err = -ENOENT;
1259                 goto out_err;
1260         }
1261
1262         switch (sdata->vif.type) {
1263         case NL80211_IFTYPE_MESH_POINT:
1264                 if (sdata->u.mesh.user_mpm)
1265                         statype = CFG80211_STA_MESH_PEER_USER;
1266                 else
1267                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1268                 break;
1269         case NL80211_IFTYPE_ADHOC:
1270                 statype = CFG80211_STA_IBSS;
1271                 break;
1272         case NL80211_IFTYPE_STATION:
1273                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1274                         statype = CFG80211_STA_AP_STA;
1275                         break;
1276                 }
1277                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1278                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1279                 else
1280                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1281                 break;
1282         case NL80211_IFTYPE_AP:
1283         case NL80211_IFTYPE_AP_VLAN:
1284                 statype = CFG80211_STA_AP_CLIENT;
1285                 break;
1286         default:
1287                 err = -EOPNOTSUPP;
1288                 goto out_err;
1289         }
1290
1291         err = cfg80211_check_station_change(wiphy, params, statype);
1292         if (err)
1293                 goto out_err;
1294
1295         if (params->vlan && params->vlan != sta->sdata->dev) {
1296                 bool prev_4addr = false;
1297                 bool new_4addr = false;
1298
1299                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1300
1301                 if (params->vlan->ieee80211_ptr->use_4addr) {
1302                         if (vlansdata->u.vlan.sta) {
1303                                 err = -EBUSY;
1304                                 goto out_err;
1305                         }
1306
1307                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1308                         new_4addr = true;
1309                 }
1310
1311                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1312                     sta->sdata->u.vlan.sta) {
1313                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1314                         prev_4addr = true;
1315                 }
1316
1317                 sta->sdata = vlansdata;
1318
1319                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1320                     prev_4addr != new_4addr) {
1321                         if (new_4addr)
1322                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1323                         else
1324                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1325                 }
1326
1327                 ieee80211_send_layer2_update(sta);
1328         }
1329
1330         err = sta_apply_parameters(local, sta, params);
1331         if (err)
1332                 goto out_err;
1333
1334         /* When peer becomes authorized, init rate control as well */
1335         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1336             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1337                 rate_control_rate_init(sta);
1338
1339         mutex_unlock(&local->sta_mtx);
1340
1341         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1342              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1343             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1344             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1345             sta_info_tx_streams(sta) != 1) {
1346                 ht_dbg(sta->sdata,
1347                        "%pM just authorized and MIMO capable - update SMPS\n",
1348                        sta->sta.addr);
1349                 ieee80211_send_smps_action(sta->sdata,
1350                         sta->sdata->bss->req_smps,
1351                         sta->sta.addr,
1352                         sta->sdata->vif.bss_conf.bssid);
1353         }
1354
1355         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1356             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1357                 ieee80211_recalc_ps(local, -1);
1358                 ieee80211_recalc_ps_vif(sdata);
1359         }
1360
1361         return 0;
1362 out_err:
1363         mutex_unlock(&local->sta_mtx);
1364         return err;
1365 }
1366
1367 #ifdef CONFIG_MAC80211_MESH
1368 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1369                                const u8 *dst, const u8 *next_hop)
1370 {
1371         struct ieee80211_sub_if_data *sdata;
1372         struct mesh_path *mpath;
1373         struct sta_info *sta;
1374
1375         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1376
1377         rcu_read_lock();
1378         sta = sta_info_get(sdata, next_hop);
1379         if (!sta) {
1380                 rcu_read_unlock();
1381                 return -ENOENT;
1382         }
1383
1384         mpath = mesh_path_add(sdata, dst);
1385         if (IS_ERR(mpath)) {
1386                 rcu_read_unlock();
1387                 return PTR_ERR(mpath);
1388         }
1389
1390         mesh_path_fix_nexthop(mpath, sta);
1391
1392         rcu_read_unlock();
1393         return 0;
1394 }
1395
1396 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1397                                const u8 *dst)
1398 {
1399         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1400
1401         if (dst)
1402                 return mesh_path_del(sdata, dst);
1403
1404         mesh_path_flush_by_iface(sdata);
1405         return 0;
1406 }
1407
1408 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1409                                   const u8 *dst, const u8 *next_hop)
1410 {
1411         struct ieee80211_sub_if_data *sdata;
1412         struct mesh_path *mpath;
1413         struct sta_info *sta;
1414
1415         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1416
1417         rcu_read_lock();
1418
1419         sta = sta_info_get(sdata, next_hop);
1420         if (!sta) {
1421                 rcu_read_unlock();
1422                 return -ENOENT;
1423         }
1424
1425         mpath = mesh_path_lookup(sdata, dst);
1426         if (!mpath) {
1427                 rcu_read_unlock();
1428                 return -ENOENT;
1429         }
1430
1431         mesh_path_fix_nexthop(mpath, sta);
1432
1433         rcu_read_unlock();
1434         return 0;
1435 }
1436
1437 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1438                             struct mpath_info *pinfo)
1439 {
1440         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1441
1442         if (next_hop_sta)
1443                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1444         else
1445                 memset(next_hop, 0, ETH_ALEN);
1446
1447         memset(pinfo, 0, sizeof(*pinfo));
1448
1449         pinfo->generation = mesh_paths_generation;
1450
1451         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1452                         MPATH_INFO_SN |
1453                         MPATH_INFO_METRIC |
1454                         MPATH_INFO_EXPTIME |
1455                         MPATH_INFO_DISCOVERY_TIMEOUT |
1456                         MPATH_INFO_DISCOVERY_RETRIES |
1457                         MPATH_INFO_FLAGS;
1458
1459         pinfo->frame_qlen = mpath->frame_queue.qlen;
1460         pinfo->sn = mpath->sn;
1461         pinfo->metric = mpath->metric;
1462         if (time_before(jiffies, mpath->exp_time))
1463                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1464         pinfo->discovery_timeout =
1465                         jiffies_to_msecs(mpath->discovery_timeout);
1466         pinfo->discovery_retries = mpath->discovery_retries;
1467         if (mpath->flags & MESH_PATH_ACTIVE)
1468                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1469         if (mpath->flags & MESH_PATH_RESOLVING)
1470                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1471         if (mpath->flags & MESH_PATH_SN_VALID)
1472                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1473         if (mpath->flags & MESH_PATH_FIXED)
1474                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1475         if (mpath->flags & MESH_PATH_RESOLVED)
1476                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1477 }
1478
1479 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1480                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1481
1482 {
1483         struct ieee80211_sub_if_data *sdata;
1484         struct mesh_path *mpath;
1485
1486         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1487
1488         rcu_read_lock();
1489         mpath = mesh_path_lookup(sdata, dst);
1490         if (!mpath) {
1491                 rcu_read_unlock();
1492                 return -ENOENT;
1493         }
1494         memcpy(dst, mpath->dst, ETH_ALEN);
1495         mpath_set_pinfo(mpath, next_hop, pinfo);
1496         rcu_read_unlock();
1497         return 0;
1498 }
1499
1500 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1501                                 int idx, u8 *dst, u8 *next_hop,
1502                                 struct mpath_info *pinfo)
1503 {
1504         struct ieee80211_sub_if_data *sdata;
1505         struct mesh_path *mpath;
1506
1507         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1508
1509         rcu_read_lock();
1510         mpath = mesh_path_lookup_by_idx(sdata, idx);
1511         if (!mpath) {
1512                 rcu_read_unlock();
1513                 return -ENOENT;
1514         }
1515         memcpy(dst, mpath->dst, ETH_ALEN);
1516         mpath_set_pinfo(mpath, next_hop, pinfo);
1517         rcu_read_unlock();
1518         return 0;
1519 }
1520
1521 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1522                           struct mpath_info *pinfo)
1523 {
1524         memset(pinfo, 0, sizeof(*pinfo));
1525         memcpy(mpp, mpath->mpp, ETH_ALEN);
1526
1527         pinfo->generation = mpp_paths_generation;
1528 }
1529
1530 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1531                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1532
1533 {
1534         struct ieee80211_sub_if_data *sdata;
1535         struct mesh_path *mpath;
1536
1537         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1538
1539         rcu_read_lock();
1540         mpath = mpp_path_lookup(sdata, dst);
1541         if (!mpath) {
1542                 rcu_read_unlock();
1543                 return -ENOENT;
1544         }
1545         memcpy(dst, mpath->dst, ETH_ALEN);
1546         mpp_set_pinfo(mpath, mpp, pinfo);
1547         rcu_read_unlock();
1548         return 0;
1549 }
1550
1551 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1552                               int idx, u8 *dst, u8 *mpp,
1553                               struct mpath_info *pinfo)
1554 {
1555         struct ieee80211_sub_if_data *sdata;
1556         struct mesh_path *mpath;
1557
1558         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1559
1560         rcu_read_lock();
1561         mpath = mpp_path_lookup_by_idx(sdata, idx);
1562         if (!mpath) {
1563                 rcu_read_unlock();
1564                 return -ENOENT;
1565         }
1566         memcpy(dst, mpath->dst, ETH_ALEN);
1567         mpp_set_pinfo(mpath, mpp, pinfo);
1568         rcu_read_unlock();
1569         return 0;
1570 }
1571
1572 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1573                                 struct net_device *dev,
1574                                 struct mesh_config *conf)
1575 {
1576         struct ieee80211_sub_if_data *sdata;
1577         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1578
1579         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1580         return 0;
1581 }
1582
1583 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1584 {
1585         return (mask >> (parm-1)) & 0x1;
1586 }
1587
1588 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1589                 const struct mesh_setup *setup)
1590 {
1591         u8 *new_ie;
1592         const u8 *old_ie;
1593         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1594                                         struct ieee80211_sub_if_data, u.mesh);
1595
1596         /* allocate information elements */
1597         new_ie = NULL;
1598         old_ie = ifmsh->ie;
1599
1600         if (setup->ie_len) {
1601                 new_ie = kmemdup(setup->ie, setup->ie_len,
1602                                 GFP_KERNEL);
1603                 if (!new_ie)
1604                         return -ENOMEM;
1605         }
1606         ifmsh->ie_len = setup->ie_len;
1607         ifmsh->ie = new_ie;
1608         kfree(old_ie);
1609
1610         /* now copy the rest of the setup parameters */
1611         ifmsh->mesh_id_len = setup->mesh_id_len;
1612         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1613         ifmsh->mesh_sp_id = setup->sync_method;
1614         ifmsh->mesh_pp_id = setup->path_sel_proto;
1615         ifmsh->mesh_pm_id = setup->path_metric;
1616         ifmsh->user_mpm = setup->user_mpm;
1617         ifmsh->mesh_auth_id = setup->auth_id;
1618         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1619         if (setup->is_authenticated)
1620                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1621         if (setup->is_secure)
1622                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1623
1624         /* mcast rate setting in Mesh Node */
1625         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1626                                                 sizeof(setup->mcast_rate));
1627         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1628
1629         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1630         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1631
1632         return 0;
1633 }
1634
1635 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1636                                         struct net_device *dev, u32 mask,
1637                                         const struct mesh_config *nconf)
1638 {
1639         struct mesh_config *conf;
1640         struct ieee80211_sub_if_data *sdata;
1641         struct ieee80211_if_mesh *ifmsh;
1642
1643         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1644         ifmsh = &sdata->u.mesh;
1645
1646         /* Set the config options which we are interested in setting */
1647         conf = &(sdata->u.mesh.mshcfg);
1648         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1649                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1650         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1651                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1652         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1653                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1654         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1655                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1656         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1657                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1658         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1659                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1660         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1661                 conf->element_ttl = nconf->element_ttl;
1662         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1663                 if (ifmsh->user_mpm)
1664                         return -EBUSY;
1665                 conf->auto_open_plinks = nconf->auto_open_plinks;
1666         }
1667         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1668                 conf->dot11MeshNbrOffsetMaxNeighbor =
1669                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1670         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1671                 conf->dot11MeshHWMPmaxPREQretries =
1672                         nconf->dot11MeshHWMPmaxPREQretries;
1673         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1674                 conf->path_refresh_time = nconf->path_refresh_time;
1675         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1676                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1677         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1678                 conf->dot11MeshHWMPactivePathTimeout =
1679                         nconf->dot11MeshHWMPactivePathTimeout;
1680         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1681                 conf->dot11MeshHWMPpreqMinInterval =
1682                         nconf->dot11MeshHWMPpreqMinInterval;
1683         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1684                 conf->dot11MeshHWMPperrMinInterval =
1685                         nconf->dot11MeshHWMPperrMinInterval;
1686         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1687                            mask))
1688                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1689                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1690         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1691                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1692                 ieee80211_mesh_root_setup(ifmsh);
1693         }
1694         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1695                 /* our current gate announcement implementation rides on root
1696                  * announcements, so require this ifmsh to also be a root node
1697                  * */
1698                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1699                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1700                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1701                         ieee80211_mesh_root_setup(ifmsh);
1702                 }
1703                 conf->dot11MeshGateAnnouncementProtocol =
1704                         nconf->dot11MeshGateAnnouncementProtocol;
1705         }
1706         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1707                 conf->dot11MeshHWMPRannInterval =
1708                         nconf->dot11MeshHWMPRannInterval;
1709         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1710                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1711         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1712                 /* our RSSI threshold implementation is supported only for
1713                  * devices that report signal in dBm.
1714                  */
1715                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1716                         return -ENOTSUPP;
1717                 conf->rssi_threshold = nconf->rssi_threshold;
1718         }
1719         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1720                 conf->ht_opmode = nconf->ht_opmode;
1721                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1722                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1723         }
1724         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1725                 conf->dot11MeshHWMPactivePathToRootTimeout =
1726                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1727         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1728                 conf->dot11MeshHWMProotInterval =
1729                         nconf->dot11MeshHWMProotInterval;
1730         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1731                 conf->dot11MeshHWMPconfirmationInterval =
1732                         nconf->dot11MeshHWMPconfirmationInterval;
1733         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1734                 conf->power_mode = nconf->power_mode;
1735                 ieee80211_mps_local_status_update(sdata);
1736         }
1737         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1738                 conf->dot11MeshAwakeWindowDuration =
1739                         nconf->dot11MeshAwakeWindowDuration;
1740         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1741                 conf->plink_timeout = nconf->plink_timeout;
1742         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1743         return 0;
1744 }
1745
1746 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1747                                const struct mesh_config *conf,
1748                                const struct mesh_setup *setup)
1749 {
1750         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1751         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1752         int err;
1753
1754         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1755         err = copy_mesh_setup(ifmsh, setup);
1756         if (err)
1757                 return err;
1758
1759         /* can mesh use other SMPS modes? */
1760         sdata->smps_mode = IEEE80211_SMPS_OFF;
1761         sdata->needed_rx_chains = sdata->local->rx_chains;
1762
1763         mutex_lock(&sdata->local->mtx);
1764         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1765                                         IEEE80211_CHANCTX_SHARED);
1766         mutex_unlock(&sdata->local->mtx);
1767         if (err)
1768                 return err;
1769
1770         return ieee80211_start_mesh(sdata);
1771 }
1772
1773 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1774 {
1775         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1776
1777         ieee80211_stop_mesh(sdata);
1778         mutex_lock(&sdata->local->mtx);
1779         ieee80211_vif_release_channel(sdata);
1780         mutex_unlock(&sdata->local->mtx);
1781
1782         return 0;
1783 }
1784 #endif
1785
1786 static int ieee80211_change_bss(struct wiphy *wiphy,
1787                                 struct net_device *dev,
1788                                 struct bss_parameters *params)
1789 {
1790         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1791         enum ieee80211_band band;
1792         u32 changed = 0;
1793
1794         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1795                 return -ENOENT;
1796
1797         band = ieee80211_get_sdata_band(sdata);
1798
1799         if (params->use_cts_prot >= 0) {
1800                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1801                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1802         }
1803         if (params->use_short_preamble >= 0) {
1804                 sdata->vif.bss_conf.use_short_preamble =
1805                         params->use_short_preamble;
1806                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1807         }
1808
1809         if (!sdata->vif.bss_conf.use_short_slot &&
1810             band == IEEE80211_BAND_5GHZ) {
1811                 sdata->vif.bss_conf.use_short_slot = true;
1812                 changed |= BSS_CHANGED_ERP_SLOT;
1813         }
1814
1815         if (params->use_short_slot_time >= 0) {
1816                 sdata->vif.bss_conf.use_short_slot =
1817                         params->use_short_slot_time;
1818                 changed |= BSS_CHANGED_ERP_SLOT;
1819         }
1820
1821         if (params->basic_rates) {
1822                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1823                                          wiphy->bands[band],
1824                                          params->basic_rates,
1825                                          params->basic_rates_len,
1826                                          &sdata->vif.bss_conf.basic_rates);
1827                 changed |= BSS_CHANGED_BASIC_RATES;
1828         }
1829
1830         if (params->ap_isolate >= 0) {
1831                 if (params->ap_isolate)
1832                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1833                 else
1834                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1835         }
1836
1837         if (params->ht_opmode >= 0) {
1838                 sdata->vif.bss_conf.ht_operation_mode =
1839                         (u16) params->ht_opmode;
1840                 changed |= BSS_CHANGED_HT;
1841         }
1842
1843         if (params->p2p_ctwindow >= 0) {
1844                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1845                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1846                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1847                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1848                 changed |= BSS_CHANGED_P2P_PS;
1849         }
1850
1851         if (params->p2p_opp_ps > 0) {
1852                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1853                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1854                 changed |= BSS_CHANGED_P2P_PS;
1855         } else if (params->p2p_opp_ps == 0) {
1856                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1857                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1858                 changed |= BSS_CHANGED_P2P_PS;
1859         }
1860
1861         ieee80211_bss_info_change_notify(sdata, changed);
1862
1863         return 0;
1864 }
1865
1866 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1867                                     struct net_device *dev,
1868                                     struct ieee80211_txq_params *params)
1869 {
1870         struct ieee80211_local *local = wiphy_priv(wiphy);
1871         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1872         struct ieee80211_tx_queue_params p;
1873
1874         if (!local->ops->conf_tx)
1875                 return -EOPNOTSUPP;
1876
1877         if (local->hw.queues < IEEE80211_NUM_ACS)
1878                 return -EOPNOTSUPP;
1879
1880         memset(&p, 0, sizeof(p));
1881         p.aifs = params->aifs;
1882         p.cw_max = params->cwmax;
1883         p.cw_min = params->cwmin;
1884         p.txop = params->txop;
1885
1886         /*
1887          * Setting tx queue params disables u-apsd because it's only
1888          * called in master mode.
1889          */
1890         p.uapsd = false;
1891
1892         sdata->tx_conf[params->ac] = p;
1893         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1894                 wiphy_debug(local->hw.wiphy,
1895                             "failed to set TX queue parameters for AC %d\n",
1896                             params->ac);
1897                 return -EINVAL;
1898         }
1899
1900         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1901
1902         return 0;
1903 }
1904
1905 #ifdef CONFIG_PM
1906 static int ieee80211_suspend(struct wiphy *wiphy,
1907                              struct cfg80211_wowlan *wowlan)
1908 {
1909         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1910 }
1911
1912 static int ieee80211_resume(struct wiphy *wiphy)
1913 {
1914         return __ieee80211_resume(wiphy_priv(wiphy));
1915 }
1916 #else
1917 #define ieee80211_suspend NULL
1918 #define ieee80211_resume NULL
1919 #endif
1920
1921 static int ieee80211_scan(struct wiphy *wiphy,
1922                           struct cfg80211_scan_request *req)
1923 {
1924         struct ieee80211_sub_if_data *sdata;
1925
1926         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1927
1928         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1929         case NL80211_IFTYPE_STATION:
1930         case NL80211_IFTYPE_ADHOC:
1931         case NL80211_IFTYPE_MESH_POINT:
1932         case NL80211_IFTYPE_P2P_CLIENT:
1933         case NL80211_IFTYPE_P2P_DEVICE:
1934                 break;
1935         case NL80211_IFTYPE_P2P_GO:
1936                 if (sdata->local->ops->hw_scan)
1937                         break;
1938                 /*
1939                  * FIXME: implement NoA while scanning in software,
1940                  * for now fall through to allow scanning only when
1941                  * beaconing hasn't been configured yet
1942                  */
1943         case NL80211_IFTYPE_AP:
1944                 /*
1945                  * If the scan has been forced (and the driver supports
1946                  * forcing), don't care about being beaconing already.
1947                  * This will create problems to the attached stations (e.g. all
1948                  * the  frames sent while scanning on other channel will be
1949                  * lost)
1950                  */
1951                 if (sdata->u.ap.beacon &&
1952                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1953                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1954                         return -EOPNOTSUPP;
1955                 break;
1956         default:
1957                 return -EOPNOTSUPP;
1958         }
1959
1960         return ieee80211_request_scan(sdata, req);
1961 }
1962
1963 static int
1964 ieee80211_sched_scan_start(struct wiphy *wiphy,
1965                            struct net_device *dev,
1966                            struct cfg80211_sched_scan_request *req)
1967 {
1968         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1969
1970         if (!sdata->local->ops->sched_scan_start)
1971                 return -EOPNOTSUPP;
1972
1973         return ieee80211_request_sched_scan_start(sdata, req);
1974 }
1975
1976 static int
1977 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1978 {
1979         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1980
1981         if (!sdata->local->ops->sched_scan_stop)
1982                 return -EOPNOTSUPP;
1983
1984         return ieee80211_request_sched_scan_stop(sdata);
1985 }
1986
1987 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1988                           struct cfg80211_auth_request *req)
1989 {
1990         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1991 }
1992
1993 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1994                            struct cfg80211_assoc_request *req)
1995 {
1996         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1997 }
1998
1999 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2000                             struct cfg80211_deauth_request *req)
2001 {
2002         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2003 }
2004
2005 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2006                               struct cfg80211_disassoc_request *req)
2007 {
2008         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2009 }
2010
2011 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2012                                struct cfg80211_ibss_params *params)
2013 {
2014         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2015 }
2016
2017 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2018 {
2019         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2020 }
2021
2022 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2023                               struct ocb_setup *setup)
2024 {
2025         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2026 }
2027
2028 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2029 {
2030         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2031 }
2032
2033 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2034                                     int rate[IEEE80211_NUM_BANDS])
2035 {
2036         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2037
2038         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2039                sizeof(int) * IEEE80211_NUM_BANDS);
2040
2041         return 0;
2042 }
2043
2044 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2045 {
2046         struct ieee80211_local *local = wiphy_priv(wiphy);
2047         int err;
2048
2049         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2050                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2051
2052                 if (err)
2053                         return err;
2054         }
2055
2056         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2057             (changed & WIPHY_PARAM_DYN_ACK)) {
2058                 s16 coverage_class;
2059
2060                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2061                                         wiphy->coverage_class : -1;
2062                 err = drv_set_coverage_class(local, coverage_class);
2063
2064                 if (err)
2065                         return err;
2066         }
2067
2068         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2069                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2070
2071                 if (err)
2072                         return err;
2073         }
2074
2075         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2076                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2077                         return -EINVAL;
2078                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2079         }
2080         if (changed & WIPHY_PARAM_RETRY_LONG) {
2081                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2082                         return -EINVAL;
2083                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2084         }
2085         if (changed &
2086             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2087                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2088
2089         return 0;
2090 }
2091
2092 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2093                                   struct wireless_dev *wdev,
2094                                   enum nl80211_tx_power_setting type, int mbm)
2095 {
2096         struct ieee80211_local *local = wiphy_priv(wiphy);
2097         struct ieee80211_sub_if_data *sdata;
2098
2099         if (wdev) {
2100                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2101
2102                 switch (type) {
2103                 case NL80211_TX_POWER_AUTOMATIC:
2104                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2105                         break;
2106                 case NL80211_TX_POWER_LIMITED:
2107                 case NL80211_TX_POWER_FIXED:
2108                         if (mbm < 0 || (mbm % 100))
2109                                 return -EOPNOTSUPP;
2110                         sdata->user_power_level = MBM_TO_DBM(mbm);
2111                         break;
2112                 }
2113
2114                 ieee80211_recalc_txpower(sdata);
2115
2116                 return 0;
2117         }
2118
2119         switch (type) {
2120         case NL80211_TX_POWER_AUTOMATIC:
2121                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2122                 break;
2123         case NL80211_TX_POWER_LIMITED:
2124         case NL80211_TX_POWER_FIXED:
2125                 if (mbm < 0 || (mbm % 100))
2126                         return -EOPNOTSUPP;
2127                 local->user_power_level = MBM_TO_DBM(mbm);
2128                 break;
2129         }
2130
2131         mutex_lock(&local->iflist_mtx);
2132         list_for_each_entry(sdata, &local->interfaces, list)
2133                 sdata->user_power_level = local->user_power_level;
2134         list_for_each_entry(sdata, &local->interfaces, list)
2135                 ieee80211_recalc_txpower(sdata);
2136         mutex_unlock(&local->iflist_mtx);
2137
2138         return 0;
2139 }
2140
2141 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2142                                   struct wireless_dev *wdev,
2143                                   int *dbm)
2144 {
2145         struct ieee80211_local *local = wiphy_priv(wiphy);
2146         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2147
2148         if (local->ops->get_txpower)
2149                 return drv_get_txpower(local, sdata, dbm);
2150
2151         if (!local->use_chanctx)
2152                 *dbm = local->hw.conf.power_level;
2153         else
2154                 *dbm = sdata->vif.bss_conf.txpower;
2155
2156         return 0;
2157 }
2158
2159 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2160                                   const u8 *addr)
2161 {
2162         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2163
2164         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2165
2166         return 0;
2167 }
2168
2169 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2170 {
2171         struct ieee80211_local *local = wiphy_priv(wiphy);
2172
2173         drv_rfkill_poll(local);
2174 }
2175
2176 #ifdef CONFIG_NL80211_TESTMODE
2177 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2178                                   struct wireless_dev *wdev,
2179                                   void *data, int len)
2180 {
2181         struct ieee80211_local *local = wiphy_priv(wiphy);
2182         struct ieee80211_vif *vif = NULL;
2183
2184         if (!local->ops->testmode_cmd)
2185                 return -EOPNOTSUPP;
2186
2187         if (wdev) {
2188                 struct ieee80211_sub_if_data *sdata;
2189
2190                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2191                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2192                         vif = &sdata->vif;
2193         }
2194
2195         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2196 }
2197
2198 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2199                                    struct sk_buff *skb,
2200                                    struct netlink_callback *cb,
2201                                    void *data, int len)
2202 {
2203         struct ieee80211_local *local = wiphy_priv(wiphy);
2204
2205         if (!local->ops->testmode_dump)
2206                 return -EOPNOTSUPP;
2207
2208         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2209 }
2210 #endif
2211
2212 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2213                                 enum ieee80211_smps_mode smps_mode)
2214 {
2215         struct sta_info *sta;
2216         enum ieee80211_smps_mode old_req;
2217         int i;
2218
2219         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2220                 return -EINVAL;
2221
2222         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2223                 return 0;
2224
2225         old_req = sdata->u.ap.req_smps;
2226         sdata->u.ap.req_smps = smps_mode;
2227
2228         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2229         if (old_req == smps_mode ||
2230             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2231                 return 0;
2232
2233          /* If no associated stations, there's no need to do anything */
2234         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2235                 sdata->smps_mode = smps_mode;
2236                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2237                 return 0;
2238         }
2239
2240         ht_dbg(sdata,
2241                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2242                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2243
2244         mutex_lock(&sdata->local->sta_mtx);
2245         for (i = 0; i < STA_HASH_SIZE; i++) {
2246                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2247                                 lockdep_is_held(&sdata->local->sta_mtx));
2248                      sta;
2249                      sta = rcu_dereference_protected(sta->hnext,
2250                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2251                         /*
2252                          * Only stations associated to our AP and
2253                          * associated VLANs
2254                          */
2255                         if (sta->sdata->bss != &sdata->u.ap)
2256                                 continue;
2257
2258                         /* This station doesn't support MIMO - skip it */
2259                         if (sta_info_tx_streams(sta) == 1)
2260                                 continue;
2261
2262                         /*
2263                          * Don't wake up a STA just to send the action frame
2264                          * unless we are getting more restrictive.
2265                          */
2266                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2267                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2268                                                            smps_mode)) {
2269                                 ht_dbg(sdata,
2270                                        "Won't send SMPS to sleeping STA %pM\n",
2271                                        sta->sta.addr);
2272                                 continue;
2273                         }
2274
2275                         /*
2276                          * If the STA is not authorized, wait until it gets
2277                          * authorized and the action frame will be sent then.
2278                          */
2279                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2280                                 continue;
2281
2282                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2283                         ieee80211_send_smps_action(sdata, smps_mode,
2284                                                    sta->sta.addr,
2285                                                    sdata->vif.bss_conf.bssid);
2286                 }
2287         }
2288         mutex_unlock(&sdata->local->sta_mtx);
2289
2290         sdata->smps_mode = smps_mode;
2291         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2292
2293         return 0;
2294 }
2295
2296 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2297                                  enum ieee80211_smps_mode smps_mode)
2298 {
2299         const u8 *ap;
2300         enum ieee80211_smps_mode old_req;
2301         int err;
2302
2303         lockdep_assert_held(&sdata->wdev.mtx);
2304
2305         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2306                 return -EINVAL;
2307
2308         old_req = sdata->u.mgd.req_smps;
2309         sdata->u.mgd.req_smps = smps_mode;
2310
2311         if (old_req == smps_mode &&
2312             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2313                 return 0;
2314
2315         /*
2316          * If not associated, or current association is not an HT
2317          * association, there's no need to do anything, just store
2318          * the new value until we associate.
2319          */
2320         if (!sdata->u.mgd.associated ||
2321             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2322                 return 0;
2323
2324         ap = sdata->u.mgd.associated->bssid;
2325
2326         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2327                 if (sdata->u.mgd.powersave)
2328                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2329                 else
2330                         smps_mode = IEEE80211_SMPS_OFF;
2331         }
2332
2333         /* send SM PS frame to AP */
2334         err = ieee80211_send_smps_action(sdata, smps_mode,
2335                                          ap, ap);
2336         if (err)
2337                 sdata->u.mgd.req_smps = old_req;
2338
2339         return err;
2340 }
2341
2342 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2343                                     bool enabled, int timeout)
2344 {
2345         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2346         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2347
2348         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2349                 return -EOPNOTSUPP;
2350
2351         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2352                 return -EOPNOTSUPP;
2353
2354         if (enabled == sdata->u.mgd.powersave &&
2355             timeout == local->dynamic_ps_forced_timeout)
2356                 return 0;
2357
2358         sdata->u.mgd.powersave = enabled;
2359         local->dynamic_ps_forced_timeout = timeout;
2360
2361         /* no change, but if automatic follow powersave */
2362         sdata_lock(sdata);
2363         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2364         sdata_unlock(sdata);
2365
2366         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2367                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2368
2369         ieee80211_recalc_ps(local, -1);
2370         ieee80211_recalc_ps_vif(sdata);
2371
2372         return 0;
2373 }
2374
2375 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2376                                          struct net_device *dev,
2377                                          s32 rssi_thold, u32 rssi_hyst)
2378 {
2379         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2380         struct ieee80211_vif *vif = &sdata->vif;
2381         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2382
2383         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2384             rssi_hyst == bss_conf->cqm_rssi_hyst)
2385                 return 0;
2386
2387         bss_conf->cqm_rssi_thold = rssi_thold;
2388         bss_conf->cqm_rssi_hyst = rssi_hyst;
2389
2390         /* tell the driver upon association, unless already associated */
2391         if (sdata->u.mgd.associated &&
2392             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2393                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2394
2395         return 0;
2396 }
2397
2398 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2399                                       struct net_device *dev,
2400                                       const u8 *addr,
2401                                       const struct cfg80211_bitrate_mask *mask)
2402 {
2403         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2404         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2405         int i, ret;
2406
2407         if (!ieee80211_sdata_running(sdata))
2408                 return -ENETDOWN;
2409
2410         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2411                 ret = drv_set_bitrate_mask(local, sdata, mask);
2412                 if (ret)
2413                         return ret;
2414         }
2415
2416         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2417                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2418                 int j;
2419
2420                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2421                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2422                        sizeof(mask->control[i].ht_mcs));
2423
2424                 sdata->rc_has_mcs_mask[i] = false;
2425                 if (!sband)
2426                         continue;
2427
2428                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2429                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2430                                 sdata->rc_has_mcs_mask[i] = true;
2431                                 break;
2432                         }
2433         }
2434
2435         return 0;
2436 }
2437
2438 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2439                                            struct ieee80211_roc_work *new_roc,
2440                                            struct ieee80211_roc_work *cur_roc)
2441 {
2442         unsigned long j = jiffies;
2443         unsigned long cur_roc_end = cur_roc->hw_start_time +
2444                                     msecs_to_jiffies(cur_roc->duration);
2445         struct ieee80211_roc_work *next_roc;
2446         int new_dur;
2447
2448         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2449                 return false;
2450
2451         if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
2452                 return false;
2453
2454         ieee80211_handle_roc_started(new_roc);
2455
2456         new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);
2457
2458         /* cur_roc is long enough - add new_roc to the dependents list. */
2459         if (new_dur <= 0) {
2460                 list_add_tail(&new_roc->list, &cur_roc->dependents);
2461                 return true;
2462         }
2463
2464         new_roc->duration = new_dur;
2465
2466         /*
2467          * if cur_roc was already coalesced before, we might
2468          * want to extend the next roc instead of adding
2469          * a new one.
2470          */
2471         next_roc = list_entry(cur_roc->list.next,
2472                               struct ieee80211_roc_work, list);
2473         if (&next_roc->list != &local->roc_list &&
2474             next_roc->chan == new_roc->chan &&
2475             next_roc->sdata == new_roc->sdata &&
2476             !WARN_ON(next_roc->started)) {
2477                 list_add_tail(&new_roc->list, &next_roc->dependents);
2478                 next_roc->duration = max(next_roc->duration,
2479                                          new_roc->duration);
2480                 next_roc->type = max(next_roc->type, new_roc->type);
2481                 return true;
2482         }
2483
2484         /* add right after cur_roc */
2485         list_add(&new_roc->list, &cur_roc->list);
2486
2487         return true;
2488 }
2489
2490 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2491                                     struct ieee80211_sub_if_data *sdata,
2492                                     struct ieee80211_channel *channel,
2493                                     unsigned int duration, u64 *cookie,
2494                                     struct sk_buff *txskb,
2495                                     enum ieee80211_roc_type type)
2496 {
2497         struct ieee80211_roc_work *roc, *tmp;
2498         bool queued = false;
2499         int ret;
2500
2501         lockdep_assert_held(&local->mtx);
2502
2503         if (local->use_chanctx && !local->ops->remain_on_channel)
2504                 return -EOPNOTSUPP;
2505
2506         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2507         if (!roc)
2508                 return -ENOMEM;
2509
2510         /*
2511          * If the duration is zero, then the driver
2512          * wouldn't actually do anything. Set it to
2513          * 10 for now.
2514          *
2515          * TODO: cancel the off-channel operation
2516          *       when we get the SKB's TX status and
2517          *       the wait time was zero before.
2518          */
2519         if (!duration)
2520                 duration = 10;
2521
2522         roc->chan = channel;
2523         roc->duration = duration;
2524         roc->req_duration = duration;
2525         roc->frame = txskb;
2526         roc->type = type;
2527         roc->mgmt_tx_cookie = (unsigned long)txskb;
2528         roc->sdata = sdata;
2529         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2530         INIT_LIST_HEAD(&roc->dependents);
2531
2532         /*
2533          * cookie is either the roc cookie (for normal roc)
2534          * or the SKB (for mgmt TX)
2535          */
2536         if (!txskb) {
2537                 /* local->mtx protects this */
2538                 local->roc_cookie_counter++;
2539                 roc->cookie = local->roc_cookie_counter;
2540                 /* wow, you wrapped 64 bits ... more likely a bug */
2541                 if (WARN_ON(roc->cookie == 0)) {
2542                         roc->cookie = 1;
2543                         local->roc_cookie_counter++;
2544                 }
2545                 *cookie = roc->cookie;
2546         } else {
2547                 *cookie = (unsigned long)txskb;
2548         }
2549
2550         /* if there's one pending or we're scanning, queue this one */
2551         if (!list_empty(&local->roc_list) ||
2552             local->scanning || local->radar_detect_enabled)
2553                 goto out_check_combine;
2554
2555         /* if not HW assist, just queue & schedule work */
2556         if (!local->ops->remain_on_channel) {
2557                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2558                 goto out_queue;
2559         }
2560
2561         /* otherwise actually kick it off here (for error handling) */
2562
2563         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2564         if (ret) {
2565                 kfree(roc);
2566                 return ret;
2567         }
2568
2569         roc->started = true;
2570         goto out_queue;
2571
2572  out_check_combine:
2573         list_for_each_entry(tmp, &local->roc_list, list) {
2574                 if (tmp->chan != channel || tmp->sdata != sdata)
2575                         continue;
2576
2577                 /*
2578                  * Extend this ROC if possible:
2579                  *
2580                  * If it hasn't started yet, just increase the duration
2581                  * and add the new one to the list of dependents.
2582                  * If the type of the new ROC has higher priority, modify the
2583                  * type of the previous one to match that of the new one.
2584                  */
2585                 if (!tmp->started) {
2586                         list_add_tail(&roc->list, &tmp->dependents);
2587                         tmp->duration = max(tmp->duration, roc->duration);
2588                         tmp->type = max(tmp->type, roc->type);
2589                         queued = true;
2590                         break;
2591                 }
2592
2593                 /* If it has already started, it's more difficult ... */
2594                 if (local->ops->remain_on_channel) {
2595                         /*
2596                          * In the offloaded ROC case, if it hasn't begun, add
2597                          * this new one to the dependent list to be handled
2598                          * when the master one begins. If it has begun,
2599                          * check that there's still a minimum time left and
2600                          * if so, start this one, transmitting the frame, but
2601                          * add it to the list directly after this one with
2602                          * a reduced time so we'll ask the driver to execute
2603                          * it right after finishing the previous one, in the
2604                          * hope that it'll also be executed right afterwards,
2605                          * effectively extending the old one.
2606                          * If there's no minimum time left, just add it to the
2607                          * normal list.
2608                          * TODO: the ROC type is ignored here, assuming that it
2609                          * is better to immediately use the current ROC.
2610                          */
2611                         if (!tmp->hw_begun) {
2612                                 list_add_tail(&roc->list, &tmp->dependents);
2613                                 queued = true;
2614                                 break;
2615                         }
2616
2617                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2618                                 queued = true;
2619                 } else if (del_timer_sync(&tmp->work.timer)) {
2620                         unsigned long new_end;
2621
2622                         /*
2623                          * In the software ROC case, cancel the timer, if
2624                          * that fails then the finish work is already
2625                          * queued/pending and thus we queue the new ROC
2626                          * normally, if that succeeds then we can extend
2627                          * the timer duration and TX the frame (if any.)
2628                          */
2629
2630                         list_add_tail(&roc->list, &tmp->dependents);
2631                         queued = true;
2632
2633                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2634
2635                         /* ok, it was started & we canceled timer */
2636                         if (time_after(new_end, tmp->work.timer.expires))
2637                                 mod_timer(&tmp->work.timer, new_end);
2638                         else
2639                                 add_timer(&tmp->work.timer);
2640
2641                         ieee80211_handle_roc_started(roc);
2642                 }
2643                 break;
2644         }
2645
2646  out_queue:
2647         if (!queued)
2648                 list_add_tail(&roc->list, &local->roc_list);
2649
2650         return 0;
2651 }
2652
2653 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2654                                        struct wireless_dev *wdev,
2655                                        struct ieee80211_channel *chan,
2656                                        unsigned int duration,
2657                                        u64 *cookie)
2658 {
2659         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2660         struct ieee80211_local *local = sdata->local;
2661         int ret;
2662
2663         mutex_lock(&local->mtx);
2664         ret = ieee80211_start_roc_work(local, sdata, chan,
2665                                        duration, cookie, NULL,
2666                                        IEEE80211_ROC_TYPE_NORMAL);
2667         mutex_unlock(&local->mtx);
2668
2669         return ret;
2670 }
2671
2672 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2673                                 u64 cookie, bool mgmt_tx)
2674 {
2675         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2676         int ret;
2677
2678         mutex_lock(&local->mtx);
2679         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2680                 struct ieee80211_roc_work *dep, *tmp2;
2681
2682                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2683                         if (!mgmt_tx && dep->cookie != cookie)
2684                                 continue;
2685                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2686                                 continue;
2687                         /* found dependent item -- just remove it */
2688                         list_del(&dep->list);
2689                         mutex_unlock(&local->mtx);
2690
2691                         ieee80211_roc_notify_destroy(dep, true);
2692                         return 0;
2693                 }
2694
2695                 if (!mgmt_tx && roc->cookie != cookie)
2696                         continue;
2697                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2698                         continue;
2699
2700                 found = roc;
2701                 break;
2702         }
2703
2704         if (!found) {
2705                 mutex_unlock(&local->mtx);
2706                 return -ENOENT;
2707         }
2708
2709         /*
2710          * We found the item to cancel, so do that. Note that it
2711          * may have dependents, which we also cancel (and send
2712          * the expired signal for.) Not doing so would be quite
2713          * tricky here, but we may need to fix it later.
2714          */
2715
2716         if (local->ops->remain_on_channel) {
2717                 if (found->started) {
2718                         ret = drv_cancel_remain_on_channel(local);
2719                         if (WARN_ON_ONCE(ret)) {
2720                                 mutex_unlock(&local->mtx);
2721                                 return ret;
2722                         }
2723                 }
2724
2725                 list_del(&found->list);
2726
2727                 if (found->started)
2728                         ieee80211_start_next_roc(local);
2729                 mutex_unlock(&local->mtx);
2730
2731                 ieee80211_roc_notify_destroy(found, true);
2732         } else {
2733                 /* work may be pending so use it all the time */
2734                 found->abort = true;
2735                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2736
2737                 mutex_unlock(&local->mtx);
2738
2739                 /* work will clean up etc */
2740                 flush_delayed_work(&found->work);
2741                 WARN_ON(!found->to_be_freed);
2742                 kfree(found);
2743         }
2744
2745         return 0;
2746 }
2747
2748 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2749                                               struct wireless_dev *wdev,
2750                                               u64 cookie)
2751 {
2752         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2753         struct ieee80211_local *local = sdata->local;
2754
2755         return ieee80211_cancel_roc(local, cookie, false);
2756 }
2757
2758 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2759                                            struct net_device *dev,
2760                                            struct cfg80211_chan_def *chandef,
2761                                            u32 cac_time_ms)
2762 {
2763         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2764         struct ieee80211_local *local = sdata->local;
2765         int err;
2766
2767         mutex_lock(&local->mtx);
2768         if (!list_empty(&local->roc_list) || local->scanning) {
2769                 err = -EBUSY;
2770                 goto out_unlock;
2771         }
2772
2773         /* whatever, but channel contexts should not complain about that one */
2774         sdata->smps_mode = IEEE80211_SMPS_OFF;
2775         sdata->needed_rx_chains = local->rx_chains;
2776
2777         err = ieee80211_vif_use_channel(sdata, chandef,
2778                                         IEEE80211_CHANCTX_SHARED);
2779         if (err)
2780                 goto out_unlock;
2781
2782         ieee80211_queue_delayed_work(&sdata->local->hw,
2783                                      &sdata->dfs_cac_timer_work,
2784                                      msecs_to_jiffies(cac_time_ms));
2785
2786  out_unlock:
2787         mutex_unlock(&local->mtx);
2788         return err;
2789 }
2790
2791 static struct cfg80211_beacon_data *
2792 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2793 {
2794         struct cfg80211_beacon_data *new_beacon;
2795         u8 *pos;
2796         int len;
2797
2798         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2799               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2800               beacon->probe_resp_len;
2801
2802         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2803         if (!new_beacon)
2804                 return NULL;
2805
2806         pos = (u8 *)(new_beacon + 1);
2807         if (beacon->head_len) {
2808                 new_beacon->head_len = beacon->head_len;
2809                 new_beacon->head = pos;
2810                 memcpy(pos, beacon->head, beacon->head_len);
2811                 pos += beacon->head_len;
2812         }
2813         if (beacon->tail_len) {
2814                 new_beacon->tail_len = beacon->tail_len;
2815                 new_beacon->tail = pos;
2816                 memcpy(pos, beacon->tail, beacon->tail_len);
2817                 pos += beacon->tail_len;
2818         }
2819         if (beacon->beacon_ies_len) {
2820                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2821                 new_beacon->beacon_ies = pos;
2822                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2823                 pos += beacon->beacon_ies_len;
2824         }
2825         if (beacon->proberesp_ies_len) {
2826                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2827                 new_beacon->proberesp_ies = pos;
2828                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2829                 pos += beacon->proberesp_ies_len;
2830         }
2831         if (beacon->assocresp_ies_len) {
2832                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2833                 new_beacon->assocresp_ies = pos;
2834                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2835                 pos += beacon->assocresp_ies_len;
2836         }
2837         if (beacon->probe_resp_len) {
2838                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2839                 beacon->probe_resp = pos;
2840                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2841                 pos += beacon->probe_resp_len;
2842         }
2843
2844         return new_beacon;
2845 }
2846
2847 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2848 {
2849         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2850
2851         ieee80211_queue_work(&sdata->local->hw,
2852                              &sdata->csa_finalize_work);
2853 }
2854 EXPORT_SYMBOL(ieee80211_csa_finish);
2855
2856 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2857                                           u32 *changed)
2858 {
2859         int err;
2860
2861         switch (sdata->vif.type) {
2862         case NL80211_IFTYPE_AP:
2863                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2864                                               NULL);
2865                 kfree(sdata->u.ap.next_beacon);
2866                 sdata->u.ap.next_beacon = NULL;
2867
2868                 if (err < 0)
2869                         return err;
2870                 *changed |= err;
2871                 break;
2872         case NL80211_IFTYPE_ADHOC:
2873                 err = ieee80211_ibss_finish_csa(sdata);
2874                 if (err < 0)
2875                         return err;
2876                 *changed |= err;
2877                 break;
2878 #ifdef CONFIG_MAC80211_MESH
2879         case NL80211_IFTYPE_MESH_POINT:
2880                 err = ieee80211_mesh_finish_csa(sdata);
2881                 if (err < 0)
2882                         return err;
2883                 *changed |= err;
2884                 break;
2885 #endif
2886         default:
2887                 WARN_ON(1);
2888                 return -EINVAL;
2889         }
2890
2891         return 0;
2892 }
2893
2894 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2895 {
2896         struct ieee80211_local *local = sdata->local;
2897         u32 changed = 0;
2898         int err;
2899
2900         sdata_assert_lock(sdata);
2901         lockdep_assert_held(&local->mtx);
2902         lockdep_assert_held(&local->chanctx_mtx);
2903
2904         /*
2905          * using reservation isn't immediate as it may be deferred until later
2906          * with multi-vif. once reservation is complete it will re-schedule the
2907          * work with no reserved_chanctx so verify chandef to check if it
2908          * completed successfully
2909          */
2910
2911         if (sdata->reserved_chanctx) {
2912                 /*
2913                  * with multi-vif csa driver may call ieee80211_csa_finish()
2914                  * many times while waiting for other interfaces to use their
2915                  * reservations
2916                  */
2917                 if (sdata->reserved_ready)
2918                         return 0;
2919
2920                 return ieee80211_vif_use_reserved_context(sdata);
2921         }
2922
2923         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2924                                         &sdata->csa_chandef))
2925                 return -EINVAL;
2926
2927         sdata->vif.csa_active = false;
2928
2929         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2930         if (err)
2931                 return err;
2932
2933         ieee80211_bss_info_change_notify(sdata, changed);
2934
2935         if (sdata->csa_block_tx) {
2936                 ieee80211_wake_vif_queues(local, sdata,
2937                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2938                 sdata->csa_block_tx = false;
2939         }
2940
2941         err = drv_post_channel_switch(sdata);
2942         if (err)
2943                 return err;
2944
2945         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2946
2947         return 0;
2948 }
2949
2950 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2951 {
2952         if (__ieee80211_csa_finalize(sdata)) {
2953                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2954                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2955                                     GFP_KERNEL);
2956         }
2957 }
2958
2959 void ieee80211_csa_finalize_work(struct work_struct *work)
2960 {
2961         struct ieee80211_sub_if_data *sdata =
2962                 container_of(work, struct ieee80211_sub_if_data,
2963                              csa_finalize_work);
2964         struct ieee80211_local *local = sdata->local;
2965
2966         sdata_lock(sdata);
2967         mutex_lock(&local->mtx);
2968         mutex_lock(&local->chanctx_mtx);
2969
2970         /* AP might have been stopped while waiting for the lock. */
2971         if (!sdata->vif.csa_active)
2972                 goto unlock;
2973
2974         if (!ieee80211_sdata_running(sdata))
2975                 goto unlock;
2976
2977         ieee80211_csa_finalize(sdata);
2978
2979 unlock:
2980         mutex_unlock(&local->chanctx_mtx);
2981         mutex_unlock(&local->mtx);
2982         sdata_unlock(sdata);
2983 }
2984
2985 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2986                                     struct cfg80211_csa_settings *params,
2987                                     u32 *changed)
2988 {
2989         struct ieee80211_csa_settings csa = {};
2990         int err;
2991
2992         switch (sdata->vif.type) {
2993         case NL80211_IFTYPE_AP:
2994                 sdata->u.ap.next_beacon =
2995                         cfg80211_beacon_dup(&params->beacon_after);
2996                 if (!sdata->u.ap.next_beacon)
2997                         return -ENOMEM;
2998
2999                 /*
3000                  * With a count of 0, we don't have to wait for any
3001                  * TBTT before switching, so complete the CSA
3002                  * immediately.  In theory, with a count == 1 we
3003                  * should delay the switch until just before the next
3004                  * TBTT, but that would complicate things so we switch
3005                  * immediately too.  If we would delay the switch
3006                  * until the next TBTT, we would have to set the probe
3007                  * response here.
3008                  *
3009                  * TODO: A channel switch with count <= 1 without
3010                  * sending a CSA action frame is kind of useless,
3011                  * because the clients won't know we're changing
3012                  * channels.  The action frame must be implemented
3013                  * either here or in the userspace.
3014                  */
3015                 if (params->count <= 1)
3016                         break;
3017
3018                 if ((params->n_counter_offsets_beacon >
3019                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3020                     (params->n_counter_offsets_presp >
3021                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3022                         return -EINVAL;
3023
3024                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3025                 csa.counter_offsets_presp = params->counter_offsets_presp;
3026                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3027                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3028                 csa.count = params->count;
3029
3030                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3031                 if (err < 0) {
3032                         kfree(sdata->u.ap.next_beacon);
3033                         return err;
3034                 }
3035                 *changed |= err;
3036
3037                 break;
3038         case NL80211_IFTYPE_ADHOC:
3039                 if (!sdata->vif.bss_conf.ibss_joined)
3040                         return -EINVAL;
3041
3042                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3043                         return -EINVAL;
3044
3045                 switch (params->chandef.width) {
3046                 case NL80211_CHAN_WIDTH_40:
3047                         if (cfg80211_get_chandef_type(&params->chandef) !=
3048                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3049                                 return -EINVAL;
3050                 case NL80211_CHAN_WIDTH_5:
3051                 case NL80211_CHAN_WIDTH_10:
3052                 case NL80211_CHAN_WIDTH_20_NOHT:
3053                 case NL80211_CHAN_WIDTH_20:
3054                         break;
3055                 default:
3056                         return -EINVAL;
3057                 }
3058
3059                 /* changes into another band are not supported */
3060                 if (sdata->u.ibss.chandef.chan->band !=
3061                     params->chandef.chan->band)
3062                         return -EINVAL;
3063
3064                 /* see comments in the NL80211_IFTYPE_AP block */
3065                 if (params->count > 1) {
3066                         err = ieee80211_ibss_csa_beacon(sdata, params);
3067                         if (err < 0)
3068                                 return err;
3069                         *changed |= err;
3070                 }
3071
3072                 ieee80211_send_action_csa(sdata, params);
3073
3074                 break;
3075 #ifdef CONFIG_MAC80211_MESH
3076         case NL80211_IFTYPE_MESH_POINT: {
3077                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3078
3079                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3080                         return -EINVAL;
3081
3082                 /* changes into another band are not supported */
3083                 if (sdata->vif.bss_conf.chandef.chan->band !=
3084                     params->chandef.chan->band)
3085                         return -EINVAL;
3086
3087                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3088                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3089                         if (!ifmsh->pre_value)
3090                                 ifmsh->pre_value = 1;
3091                         else
3092                                 ifmsh->pre_value++;
3093                 }
3094
3095                 /* see comments in the NL80211_IFTYPE_AP block */
3096                 if (params->count > 1) {
3097                         err = ieee80211_mesh_csa_beacon(sdata, params);
3098                         if (err < 0) {
3099                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3100                                 return err;
3101                         }
3102                         *changed |= err;
3103                 }
3104
3105                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3106                         ieee80211_send_action_csa(sdata, params);
3107
3108                 break;
3109                 }
3110 #endif
3111         default:
3112                 return -EOPNOTSUPP;
3113         }
3114
3115         return 0;
3116 }
3117
3118 static int
3119 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3120                            struct cfg80211_csa_settings *params)
3121 {
3122         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3123         struct ieee80211_local *local = sdata->local;
3124         struct ieee80211_channel_switch ch_switch;
3125         struct ieee80211_chanctx_conf *conf;
3126         struct ieee80211_chanctx *chanctx;
3127         u32 changed = 0;
3128         int err;
3129
3130         sdata_assert_lock(sdata);
3131         lockdep_assert_held(&local->mtx);
3132
3133         if (!list_empty(&local->roc_list) || local->scanning)
3134                 return -EBUSY;
3135
3136         if (sdata->wdev.cac_started)
3137                 return -EBUSY;
3138
3139         if (cfg80211_chandef_identical(&params->chandef,
3140                                        &sdata->vif.bss_conf.chandef))
3141                 return -EINVAL;
3142
3143         /* don't allow another channel switch if one is already active. */
3144         if (sdata->vif.csa_active)
3145                 return -EBUSY;
3146
3147         mutex_lock(&local->chanctx_mtx);
3148         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3149                                          lockdep_is_held(&local->chanctx_mtx));
3150         if (!conf) {
3151                 err = -EBUSY;
3152                 goto out;
3153         }
3154
3155         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3156         if (!chanctx) {
3157                 err = -EBUSY;
3158                 goto out;
3159         }
3160
3161         ch_switch.timestamp = 0;
3162         ch_switch.device_timestamp = 0;
3163         ch_switch.block_tx = params->block_tx;
3164         ch_switch.chandef = params->chandef;
3165         ch_switch.count = params->count;
3166
3167         err = drv_pre_channel_switch(sdata, &ch_switch);
3168         if (err)
3169                 goto out;
3170
3171         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3172                                             chanctx->mode,
3173                                             params->radar_required);
3174         if (err)
3175                 goto out;
3176
3177         /* if reservation is invalid then this will fail */
3178         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3179         if (err) {
3180                 ieee80211_vif_unreserve_chanctx(sdata);
3181                 goto out;
3182         }
3183
3184         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3185         if (err) {
3186                 ieee80211_vif_unreserve_chanctx(sdata);
3187                 goto out;
3188         }
3189
3190         sdata->csa_chandef = params->chandef;
3191         sdata->csa_block_tx = params->block_tx;
3192         sdata->vif.csa_active = true;
3193
3194         if (sdata->csa_block_tx)
3195                 ieee80211_stop_vif_queues(local, sdata,
3196                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3197
3198         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3199                                           params->count);
3200
3201         if (changed) {
3202                 ieee80211_bss_info_change_notify(sdata, changed);
3203                 drv_channel_switch_beacon(sdata, &params->chandef);
3204         } else {
3205                 /* if the beacon didn't change, we can finalize immediately */
3206                 ieee80211_csa_finalize(sdata);
3207         }
3208
3209 out:
3210         mutex_unlock(&local->chanctx_mtx);
3211         return err;
3212 }
3213
3214 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3215                              struct cfg80211_csa_settings *params)
3216 {
3217         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3218         struct ieee80211_local *local = sdata->local;
3219         int err;
3220
3221         mutex_lock(&local->mtx);
3222         err = __ieee80211_channel_switch(wiphy, dev, params);
3223         mutex_unlock(&local->mtx);
3224
3225         return err;
3226 }
3227
3228 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3229                              struct cfg80211_mgmt_tx_params *params,
3230                              u64 *cookie)
3231 {
3232         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3233         struct ieee80211_local *local = sdata->local;
3234         struct sk_buff *skb;
3235         struct sta_info *sta;
3236         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3237         bool need_offchan = false;
3238         u32 flags;
3239         int ret;
3240         u8 *data;
3241
3242         if (params->dont_wait_for_ack)
3243                 flags = IEEE80211_TX_CTL_NO_ACK;
3244         else
3245                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3246                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3247
3248         if (params->no_cck)
3249                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3250
3251         switch (sdata->vif.type) {
3252         case NL80211_IFTYPE_ADHOC:
3253                 if (!sdata->vif.bss_conf.ibss_joined)
3254                         need_offchan = true;
3255                 /* fall through */
3256 #ifdef CONFIG_MAC80211_MESH
3257         case NL80211_IFTYPE_MESH_POINT:
3258                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3259                     !sdata->u.mesh.mesh_id_len)
3260                         need_offchan = true;
3261                 /* fall through */
3262 #endif
3263         case NL80211_IFTYPE_AP:
3264         case NL80211_IFTYPE_AP_VLAN:
3265         case NL80211_IFTYPE_P2P_GO:
3266                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3267                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3268                     !rcu_access_pointer(sdata->bss->beacon))
3269                         need_offchan = true;
3270                 if (!ieee80211_is_action(mgmt->frame_control) ||
3271                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3272                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3273                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3274                         break;
3275                 rcu_read_lock();
3276                 sta = sta_info_get(sdata, mgmt->da);
3277                 rcu_read_unlock();
3278                 if (!sta)
3279                         return -ENOLINK;
3280                 break;
3281         case NL80211_IFTYPE_STATION:
3282         case NL80211_IFTYPE_P2P_CLIENT:
3283                 if (!sdata->u.mgd.associated)
3284                         need_offchan = true;
3285                 break;
3286         case NL80211_IFTYPE_P2P_DEVICE:
3287                 need_offchan = true;
3288                 break;
3289         default:
3290                 return -EOPNOTSUPP;
3291         }
3292
3293         /* configurations requiring offchan cannot work if no channel has been
3294          * specified
3295          */
3296         if (need_offchan && !params->chan)
3297                 return -EINVAL;
3298
3299         mutex_lock(&local->mtx);
3300
3301         /* Check if the operating channel is the requested channel */
3302         if (!need_offchan) {
3303                 struct ieee80211_chanctx_conf *chanctx_conf;
3304
3305                 rcu_read_lock();
3306                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3307
3308                 if (chanctx_conf) {
3309                         need_offchan = params->chan &&
3310                                        (params->chan !=
3311                                         chanctx_conf->def.chan);
3312                 } else if (!params->chan) {
3313                         ret = -EINVAL;
3314                         rcu_read_unlock();
3315                         goto out_unlock;
3316                 } else {
3317                         need_offchan = true;
3318                 }
3319                 rcu_read_unlock();
3320         }
3321
3322         if (need_offchan && !params->offchan) {
3323                 ret = -EBUSY;
3324                 goto out_unlock;
3325         }
3326
3327         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3328         if (!skb) {
3329                 ret = -ENOMEM;
3330                 goto out_unlock;
3331         }
3332         skb_reserve(skb, local->hw.extra_tx_headroom);
3333
3334         data = skb_put(skb, params->len);
3335         memcpy(data, params->buf, params->len);
3336
3337         /* Update CSA counters */
3338         if (sdata->vif.csa_active &&
3339             (sdata->vif.type == NL80211_IFTYPE_AP ||
3340              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3341             params->n_csa_offsets) {
3342                 int i;
3343                 struct beacon_data *beacon = NULL;
3344
3345                 rcu_read_lock();
3346
3347                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3348                         beacon = rcu_dereference(sdata->u.ap.beacon);
3349                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3350                         beacon = rcu_dereference(sdata->u.ibss.presp);
3351                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3352                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3353
3354                 if (beacon)
3355                         for (i = 0; i < params->n_csa_offsets; i++)
3356                                 data[params->csa_offsets[i]] =
3357                                         beacon->csa_current_counter;
3358
3359                 rcu_read_unlock();
3360         }
3361
3362         IEEE80211_SKB_CB(skb)->flags = flags;
3363
3364         skb->dev = sdata->dev;
3365
3366         if (!need_offchan) {
3367                 *cookie = (unsigned long) skb;
3368                 ieee80211_tx_skb(sdata, skb);
3369                 ret = 0;
3370                 goto out_unlock;
3371         }
3372
3373         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3374                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3375         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3376                 IEEE80211_SKB_CB(skb)->hw_queue =
3377                         local->hw.offchannel_tx_hw_queue;
3378
3379         /* This will handle all kinds of coalescing and immediate TX */
3380         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3381                                        params->wait, cookie, skb,
3382                                        IEEE80211_ROC_TYPE_MGMT_TX);
3383         if (ret)
3384                 kfree_skb(skb);
3385  out_unlock:
3386         mutex_unlock(&local->mtx);
3387         return ret;
3388 }
3389
3390 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3391                                          struct wireless_dev *wdev,
3392                                          u64 cookie)
3393 {
3394         struct ieee80211_local *local = wiphy_priv(wiphy);
3395
3396         return ieee80211_cancel_roc(local, cookie, true);
3397 }
3398
3399 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3400                                           struct wireless_dev *wdev,
3401                                           u16 frame_type, bool reg)
3402 {
3403         struct ieee80211_local *local = wiphy_priv(wiphy);
3404
3405         switch (frame_type) {
3406         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3407                 if (reg)
3408                         local->probe_req_reg++;
3409                 else
3410                         local->probe_req_reg--;
3411
3412                 if (!local->open_count)
3413                         break;
3414
3415                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3416                 break;
3417         default:
3418                 break;
3419         }
3420 }
3421
3422 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3423 {
3424         struct ieee80211_local *local = wiphy_priv(wiphy);
3425
3426         if (local->started)
3427                 return -EOPNOTSUPP;
3428
3429         return drv_set_antenna(local, tx_ant, rx_ant);
3430 }
3431
3432 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3433 {
3434         struct ieee80211_local *local = wiphy_priv(wiphy);
3435
3436         return drv_get_antenna(local, tx_ant, rx_ant);
3437 }
3438
3439 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3440                                     struct net_device *dev,
3441                                     struct cfg80211_gtk_rekey_data *data)
3442 {
3443         struct ieee80211_local *local = wiphy_priv(wiphy);
3444         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3445
3446         if (!local->ops->set_rekey_data)
3447                 return -EOPNOTSUPP;
3448
3449         drv_set_rekey_data(local, sdata, data);
3450
3451         return 0;
3452 }
3453
3454 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3455                                   const u8 *peer, u64 *cookie)
3456 {
3457         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3458         struct ieee80211_local *local = sdata->local;
3459         struct ieee80211_qos_hdr *nullfunc;
3460         struct sk_buff *skb;
3461         int size = sizeof(*nullfunc);
3462         __le16 fc;
3463         bool qos;
3464         struct ieee80211_tx_info *info;
3465         struct sta_info *sta;
3466         struct ieee80211_chanctx_conf *chanctx_conf;
3467         enum ieee80211_band band;
3468
3469         rcu_read_lock();
3470         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3471         if (WARN_ON(!chanctx_conf)) {
3472                 rcu_read_unlock();
3473                 return -EINVAL;
3474         }
3475         band = chanctx_conf->def.chan->band;
3476         sta = sta_info_get_bss(sdata, peer);
3477         if (sta) {
3478                 qos = sta->sta.wme;
3479         } else {
3480                 rcu_read_unlock();
3481                 return -ENOLINK;
3482         }
3483
3484         if (qos) {
3485                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3486                                  IEEE80211_STYPE_QOS_NULLFUNC |
3487                                  IEEE80211_FCTL_FROMDS);
3488         } else {
3489                 size -= 2;
3490                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3491                                  IEEE80211_STYPE_NULLFUNC |
3492                                  IEEE80211_FCTL_FROMDS);
3493         }
3494
3495         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3496         if (!skb) {
3497                 rcu_read_unlock();
3498                 return -ENOMEM;
3499         }
3500
3501         skb->dev = dev;
3502
3503         skb_reserve(skb, local->hw.extra_tx_headroom);
3504
3505         nullfunc = (void *) skb_put(skb, size);
3506         nullfunc->frame_control = fc;
3507         nullfunc->duration_id = 0;
3508         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3509         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3510         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3511         nullfunc->seq_ctrl = 0;
3512
3513         info = IEEE80211_SKB_CB(skb);
3514
3515         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3516                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3517         info->band = band;
3518
3519         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3520         skb->priority = 7;
3521         if (qos)
3522                 nullfunc->qos_ctrl = cpu_to_le16(7);
3523
3524         local_bh_disable();
3525         ieee80211_xmit(sdata, skb);
3526         local_bh_enable();
3527         rcu_read_unlock();
3528
3529         *cookie = (unsigned long) skb;
3530         return 0;
3531 }
3532
3533 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3534                                      struct wireless_dev *wdev,
3535                                      struct cfg80211_chan_def *chandef)
3536 {
3537         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3538         struct ieee80211_local *local = wiphy_priv(wiphy);
3539         struct ieee80211_chanctx_conf *chanctx_conf;
3540         int ret = -ENODATA;
3541
3542         rcu_read_lock();
3543         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3544         if (chanctx_conf) {
3545                 *chandef = sdata->vif.bss_conf.chandef;
3546                 ret = 0;
3547         } else if (local->open_count > 0 &&
3548                    local->open_count == local->monitors &&
3549                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3550                 if (local->use_chanctx)
3551                         *chandef = local->monitor_chandef;
3552                 else
3553                         *chandef = local->_oper_chandef;
3554                 ret = 0;
3555         }
3556         rcu_read_unlock();
3557
3558         return ret;
3559 }
3560
3561 #ifdef CONFIG_PM
3562 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3563 {
3564         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3565 }
3566 #endif
3567
3568 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3569                                  struct net_device *dev,
3570                                  struct cfg80211_qos_map *qos_map)
3571 {
3572         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3573         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3574
3575         if (qos_map) {
3576                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3577                 if (!new_qos_map)
3578                         return -ENOMEM;
3579                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3580         } else {
3581                 /* A NULL qos_map was passed to disable QoS mapping */
3582                 new_qos_map = NULL;
3583         }
3584
3585         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3586         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3587         if (old_qos_map)
3588                 kfree_rcu(old_qos_map, rcu_head);
3589
3590         return 0;
3591 }
3592
3593 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3594                                       struct net_device *dev,
3595                                       struct cfg80211_chan_def *chandef)
3596 {
3597         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3598         int ret;
3599         u32 changed = 0;
3600
3601         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3602         if (ret == 0)
3603                 ieee80211_bss_info_change_notify(sdata, changed);
3604
3605         return ret;
3606 }
3607
3608 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3609                                u8 tsid, const u8 *peer, u8 up,
3610                                u16 admitted_time)
3611 {
3612         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3613         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3614         int ac = ieee802_1d_to_ac[up];
3615
3616         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3617                 return -EOPNOTSUPP;
3618
3619         if (!(sdata->wmm_acm & BIT(up)))
3620                 return -EINVAL;
3621
3622         if (ifmgd->tx_tspec[ac].admitted_time)
3623                 return -EBUSY;
3624
3625         if (admitted_time) {
3626                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3627                 ifmgd->tx_tspec[ac].tsid = tsid;
3628                 ifmgd->tx_tspec[ac].up = up;
3629         }
3630
3631         return 0;
3632 }
3633
3634 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3635                                u8 tsid, const u8 *peer)
3636 {
3637         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3638         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3639         struct ieee80211_local *local = wiphy_priv(wiphy);
3640         int ac;
3641
3642         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3643                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3644
3645                 /* skip unused entries */
3646                 if (!tx_tspec->admitted_time)
3647                         continue;
3648
3649                 if (tx_tspec->tsid != tsid)
3650                         continue;
3651
3652                 /* due to this new packets will be reassigned to non-ACM ACs */
3653                 tx_tspec->up = -1;
3654
3655                 /* Make sure that all packets have been sent to avoid to
3656                  * restore the QoS params on packets that are still on the
3657                  * queues.
3658                  */
3659                 synchronize_net();
3660                 ieee80211_flush_queues(local, sdata);
3661
3662                 /* restore the normal QoS parameters
3663                  * (unconditionally to avoid races)
3664                  */
3665                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3666                 tx_tspec->downgraded = false;
3667                 ieee80211_sta_handle_tspec_ac_params(sdata);
3668
3669                 /* finally clear all the data */
3670                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3671
3672                 return 0;
3673         }
3674
3675         return -ENOENT;
3676 }
3677
3678 const struct cfg80211_ops mac80211_config_ops = {
3679         .add_virtual_intf = ieee80211_add_iface,
3680         .del_virtual_intf = ieee80211_del_iface,
3681         .change_virtual_intf = ieee80211_change_iface,
3682         .start_p2p_device = ieee80211_start_p2p_device,
3683         .stop_p2p_device = ieee80211_stop_p2p_device,
3684         .add_key = ieee80211_add_key,
3685         .del_key = ieee80211_del_key,
3686         .get_key = ieee80211_get_key,
3687         .set_default_key = ieee80211_config_default_key,
3688         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3689         .start_ap = ieee80211_start_ap,
3690         .change_beacon = ieee80211_change_beacon,
3691         .stop_ap = ieee80211_stop_ap,
3692         .add_station = ieee80211_add_station,
3693         .del_station = ieee80211_del_station,
3694         .change_station = ieee80211_change_station,
3695         .get_station = ieee80211_get_station,
3696         .dump_station = ieee80211_dump_station,
3697         .dump_survey = ieee80211_dump_survey,
3698 #ifdef CONFIG_MAC80211_MESH
3699         .add_mpath = ieee80211_add_mpath,
3700         .del_mpath = ieee80211_del_mpath,
3701         .change_mpath = ieee80211_change_mpath,
3702         .get_mpath = ieee80211_get_mpath,
3703         .dump_mpath = ieee80211_dump_mpath,
3704         .get_mpp = ieee80211_get_mpp,
3705         .dump_mpp = ieee80211_dump_mpp,
3706         .update_mesh_config = ieee80211_update_mesh_config,
3707         .get_mesh_config = ieee80211_get_mesh_config,
3708         .join_mesh = ieee80211_join_mesh,
3709         .leave_mesh = ieee80211_leave_mesh,
3710 #endif
3711         .join_ocb = ieee80211_join_ocb,
3712         .leave_ocb = ieee80211_leave_ocb,
3713         .change_bss = ieee80211_change_bss,
3714         .set_txq_params = ieee80211_set_txq_params,
3715         .set_monitor_channel = ieee80211_set_monitor_channel,
3716         .suspend = ieee80211_suspend,
3717         .resume = ieee80211_resume,
3718         .scan = ieee80211_scan,
3719         .sched_scan_start = ieee80211_sched_scan_start,
3720         .sched_scan_stop = ieee80211_sched_scan_stop,
3721         .auth = ieee80211_auth,
3722         .assoc = ieee80211_assoc,
3723         .deauth = ieee80211_deauth,
3724         .disassoc = ieee80211_disassoc,
3725         .join_ibss = ieee80211_join_ibss,
3726         .leave_ibss = ieee80211_leave_ibss,
3727         .set_mcast_rate = ieee80211_set_mcast_rate,
3728         .set_wiphy_params = ieee80211_set_wiphy_params,
3729         .set_tx_power = ieee80211_set_tx_power,
3730         .get_tx_power = ieee80211_get_tx_power,
3731         .set_wds_peer = ieee80211_set_wds_peer,
3732         .rfkill_poll = ieee80211_rfkill_poll,
3733         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3734         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3735         .set_power_mgmt = ieee80211_set_power_mgmt,
3736         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3737         .remain_on_channel = ieee80211_remain_on_channel,
3738         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3739         .mgmt_tx = ieee80211_mgmt_tx,
3740         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3741         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3742         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3743         .set_antenna = ieee80211_set_antenna,
3744         .get_antenna = ieee80211_get_antenna,
3745         .set_rekey_data = ieee80211_set_rekey_data,
3746         .tdls_oper = ieee80211_tdls_oper,
3747         .tdls_mgmt = ieee80211_tdls_mgmt,
3748         .probe_client = ieee80211_probe_client,
3749         .set_noack_map = ieee80211_set_noack_map,
3750 #ifdef CONFIG_PM
3751         .set_wakeup = ieee80211_set_wakeup,
3752 #endif
3753         .get_channel = ieee80211_cfg_get_channel,
3754         .start_radar_detection = ieee80211_start_radar_detection,
3755         .channel_switch = ieee80211_channel_switch,
3756         .set_qos_map = ieee80211_set_qos_map,
3757         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3758         .add_tx_ts = ieee80211_add_tx_ts,
3759         .del_tx_ts = ieee80211_del_tx_ts,
3760 };