net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2015  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 "rate.h"
  21 #include "mesh.h"
  22 #include "wme.h"
  23
  24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  25                                                 const char *name,
  26                                                 unsigned char name_assign_type,
  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, name_assign_type, &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
 140         ieee80211_check_fast_xmit_iface(sdata);
 141
 142         return 0;
 143 }
 144
 145 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 146                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 147                              struct key_params *params)
 148 {
 149         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 150         struct ieee80211_local *local = sdata->local;
 151         struct sta_info *sta = NULL;
 152         const struct ieee80211_cipher_scheme *cs = NULL;
 153         struct ieee80211_key *key;
 154         int err;
 155
 156         if (!ieee80211_sdata_running(sdata))
 157                 return -ENETDOWN;
 158
 159         /* reject WEP and TKIP keys if WEP failed to initialize */
 160         switch (params->cipher) {
 161         case WLAN_CIPHER_SUITE_WEP40:
 162         case WLAN_CIPHER_SUITE_TKIP:
 163         case WLAN_CIPHER_SUITE_WEP104:
 164                 if (IS_ERR(local->wep_tx_tfm))
 165                         return -EINVAL;
 166                 break;
 167         case WLAN_CIPHER_SUITE_CCMP:
 168         case WLAN_CIPHER_SUITE_CCMP_256:
 169         case WLAN_CIPHER_SUITE_AES_CMAC:
 170         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 171         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 172         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 173         case WLAN_CIPHER_SUITE_GCMP:
 174         case WLAN_CIPHER_SUITE_GCMP_256:
 175                 break;
 176         default:
 177                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 178                 break;
 179         }
 180
 181         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 182                                   params->key, params->seq_len, params->seq,
 183                                   cs);
 184         if (IS_ERR(key))
 185                 return PTR_ERR(key);
 186
 187         if (pairwise)
 188                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 189
 190         mutex_lock(&local->sta_mtx);
 191
 192         if (mac_addr) {
 193                 if (ieee80211_vif_is_mesh(&sdata->vif))
 194                         sta = sta_info_get(sdata, mac_addr);
 195                 else
 196                         sta = sta_info_get_bss(sdata, mac_addr);
 197                 /*
 198                  * The ASSOC test makes sure the driver is ready to
 199                  * receive the key. When wpa_supplicant has roamed
 200                  * using FT, it attempts to set the key before
 201                  * association has completed, this rejects that attempt
 202                  * so it will set the key again after association.
 203                  *
 204                  * TODO: accept the key if we have a station entry and
 205                  *       add it to the device after the station.
 206                  */
 207                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 208                         ieee80211_key_free_unused(key);
 209                         err = -ENOENT;
 210                         goto out_unlock;
 211                 }
 212         }
 213
 214         switch (sdata->vif.type) {
 215         case NL80211_IFTYPE_STATION:
 216                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 217                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 218                 break;
 219         case NL80211_IFTYPE_AP:
 220         case NL80211_IFTYPE_AP_VLAN:
 221                 /* Keys without a station are used for TX only */
 222                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 223                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 224                 break;
 225         case NL80211_IFTYPE_ADHOC:
 226                 /* no MFP (yet) */
 227                 break;
 228         case NL80211_IFTYPE_MESH_POINT:
 229 #ifdef CONFIG_MAC80211_MESH
 230                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 231                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 232                 break;
 233 #endif
 234         case NL80211_IFTYPE_WDS:
 235         case NL80211_IFTYPE_MONITOR:
 236         case NL80211_IFTYPE_P2P_DEVICE:
 237         case NL80211_IFTYPE_UNSPECIFIED:
 238         case NUM_NL80211_IFTYPES:
 239         case NL80211_IFTYPE_P2P_CLIENT:
 240         case NL80211_IFTYPE_P2P_GO:
 241         case NL80211_IFTYPE_OCB:
 242                 /* shouldn't happen */
 243                 WARN_ON_ONCE(1);
 244                 break;
 245         }
 246
 247         if (sta)
 248                 sta->cipher_scheme = cs;
 249
 250         err = ieee80211_key_link(key, sdata, sta);
 251
 252  out_unlock:
 253         mutex_unlock(&local->sta_mtx);
 254
 255         return err;
 256 }
 257
 258 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 259                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 260 {
 261         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 262         struct ieee80211_local *local = sdata->local;
 263         struct sta_info *sta;
 264         struct ieee80211_key *key = NULL;
 265         int ret;
 266
 267         mutex_lock(&local->sta_mtx);
 268         mutex_lock(&local->key_mtx);
 269
 270         if (mac_addr) {
 271                 ret = -ENOENT;
 272
 273                 sta = sta_info_get_bss(sdata, mac_addr);
 274                 if (!sta)
 275                         goto out_unlock;
 276
 277                 if (pairwise)
 278                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 279                 else
 280                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 281         } else
 282                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 283
 284         if (!key) {
 285                 ret = -ENOENT;
 286                 goto out_unlock;
 287         }
 288
 289         ieee80211_key_free(key, true);
 290
 291         ret = 0;
 292  out_unlock:
 293         mutex_unlock(&local->key_mtx);
 294         mutex_unlock(&local->sta_mtx);
 295
 296         return ret;
 297 }
 298
 299 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 300                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 301                              void *cookie,
 302                              void (*callback)(void *cookie,
 303                                               struct key_params *params))
 304 {
 305         struct ieee80211_sub_if_data *sdata;
 306         struct sta_info *sta = NULL;
 307         u8 seq[6] = {0};
 308         struct key_params params;
 309         struct ieee80211_key *key = NULL;
 310         u64 pn64;
 311         u32 iv32;
 312         u16 iv16;
 313         int err = -ENOENT;
 314         struct ieee80211_key_seq kseq = {};
 315
 316         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 317
 318         rcu_read_lock();
 319
 320         if (mac_addr) {
 321                 sta = sta_info_get_bss(sdata, mac_addr);
 322                 if (!sta)
 323                         goto out;
 324
 325                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 326                         key = rcu_dereference(sta->ptk[key_idx]);
 327                 else if (!pairwise &&
 328                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 329                         key = rcu_dereference(sta->gtk[key_idx]);
 330         } else
 331                 key = rcu_dereference(sdata->keys[key_idx]);
 332
 333         if (!key)
 334                 goto out;
 335
 336         memset(&params, 0, sizeof(params));
 337
 338         params.cipher = key->conf.cipher;
 339
 340         switch (key->conf.cipher) {
 341         case WLAN_CIPHER_SUITE_TKIP:
 342                 pn64 = atomic64_read(&key->conf.tx_pn);
 343                 iv32 = TKIP_PN_TO_IV32(pn64);
 344                 iv16 = TKIP_PN_TO_IV16(pn64);
 345
 346                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 347                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 348                         drv_get_key_seq(sdata->local, key, &kseq);
 349                         iv32 = kseq.tkip.iv32;
 350                         iv16 = kseq.tkip.iv16;
 351                 }
 352
 353                 seq[0] = iv16 & 0xff;
 354                 seq[1] = (iv16 >> 8) & 0xff;
 355                 seq[2] = iv32 & 0xff;
 356                 seq[3] = (iv32 >> 8) & 0xff;
 357                 seq[4] = (iv32 >> 16) & 0xff;
 358                 seq[5] = (iv32 >> 24) & 0xff;
 359                 params.seq = seq;
 360                 params.seq_len = 6;
 361                 break;
 362         case WLAN_CIPHER_SUITE_CCMP:
 363         case WLAN_CIPHER_SUITE_CCMP_256:
 364         case WLAN_CIPHER_SUITE_AES_CMAC:
 365         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 366                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 367                              offsetof(typeof(kseq), aes_cmac));
 368         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 369         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 370                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 371                              offsetof(typeof(kseq), aes_gmac));
 372         case WLAN_CIPHER_SUITE_GCMP:
 373         case WLAN_CIPHER_SUITE_GCMP_256:
 374                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 375                              offsetof(typeof(kseq), gcmp));
 376
 377                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 378                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 379                         drv_get_key_seq(sdata->local, key, &kseq);
 380                         memcpy(seq, kseq.ccmp.pn, 6);
 381                 } else {
 382                         pn64 = atomic64_read(&key->conf.tx_pn);
 383                         seq[0] = pn64;
 384                         seq[1] = pn64 >> 8;
 385                         seq[2] = pn64 >> 16;
 386                         seq[3] = pn64 >> 24;
 387                         seq[4] = pn64 >> 32;
 388                         seq[5] = pn64 >> 40;
 389                 }
 390                 params.seq = seq;
 391                 params.seq_len = 6;
 392                 break;
 393         default:
 394                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 395                         break;
 396                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 397                         break;
 398                 drv_get_key_seq(sdata->local, key, &kseq);
 399                 params.seq = kseq.hw.seq;
 400                 params.seq_len = kseq.hw.seq_len;
 401                 break;
 402         }
 403
 404         params.key = key->conf.key;
 405         params.key_len = key->conf.keylen;
 406
 407         callback(cookie, &params);
 408         err = 0;
 409
 410  out:
 411         rcu_read_unlock();
 412         return err;
 413 }
 414
 415 static int ieee80211_config_default_key(struct wiphy *wiphy,
 416                                         struct net_device *dev,
 417                                         u8 key_idx, bool uni,
 418                                         bool multi)
 419 {
 420         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 421
 422         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 423
 424         return 0;
 425 }
 426
 427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 428                                              struct net_device *dev,
 429                                              u8 key_idx)
 430 {
 431         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 432
 433         ieee80211_set_default_mgmt_key(sdata, key_idx);
 434
 435         return 0;
 436 }
 437
 438 void sta_set_rate_info_tx(struct sta_info *sta,
 439                           const struct ieee80211_tx_rate *rate,
 440                           struct rate_info *rinfo)
 441 {
 442         rinfo->flags = 0;
 443         if (rate->flags & IEEE80211_TX_RC_MCS) {
 444                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 445                 rinfo->mcs = rate->idx;
 446         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 447                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 448                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 449                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 450         } else {
 451                 struct ieee80211_supported_band *sband;
 452                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 453                 u16 brate;
 454
 455                 sband = sta->local->hw.wiphy->bands[
 456                                 ieee80211_get_sdata_band(sta->sdata)];
 457                 brate = sband->bitrates[rate->idx].bitrate;
 458                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 459         }
 460         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 461                 rinfo->bw = RATE_INFO_BW_40;
 462         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 463                 rinfo->bw = RATE_INFO_BW_80;
 464         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 465                 rinfo->bw = RATE_INFO_BW_160;
 466         else
 467                 rinfo->bw = RATE_INFO_BW_20;
 468         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 469                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 470 }
 471
 472 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 473                                   int idx, u8 *mac, struct station_info *sinfo)
 474 {
 475         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 476         struct ieee80211_local *local = sdata->local;
 477         struct sta_info *sta;
 478         int ret = -ENOENT;
 479
 480         mutex_lock(&local->sta_mtx);
 481
 482         sta = sta_info_get_by_idx(sdata, idx);
 483         if (sta) {
 484                 ret = 0;
 485                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 486                 sta_set_sinfo(sta, sinfo);
 487         }
 488
 489         mutex_unlock(&local->sta_mtx);
 490
 491         return ret;
 492 }
 493
 494 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 495                                  int idx, struct survey_info *survey)
 496 {
 497         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 498
 499         return drv_get_survey(local, idx, survey);
 500 }
 501
 502 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 503                                  const u8 *mac, struct station_info *sinfo)
 504 {
 505         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 506         struct ieee80211_local *local = sdata->local;
 507         struct sta_info *sta;
 508         int ret = -ENOENT;
 509
 510         mutex_lock(&local->sta_mtx);
 511
 512         sta = sta_info_get_bss(sdata, mac);
 513         if (sta) {
 514                 ret = 0;
 515                 sta_set_sinfo(sta, sinfo);
 516         }
 517
 518         mutex_unlock(&local->sta_mtx);
 519
 520         return ret;
 521 }
 522
 523 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 524                                          struct cfg80211_chan_def *chandef)
 525 {
 526         struct ieee80211_local *local = wiphy_priv(wiphy);
 527         struct ieee80211_sub_if_data *sdata;
 528         int ret = 0;
 529
 530         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 531                 return 0;
 532
 533         mutex_lock(&local->mtx);
 534         mutex_lock(&local->iflist_mtx);
 535         if (local->use_chanctx) {
 536                 sdata = rcu_dereference_protected(
 537                                 local->monitor_sdata,
 538                                 lockdep_is_held(&local->iflist_mtx));
 539                 if (sdata) {
 540                         ieee80211_vif_release_channel(sdata);
 541                         ret = ieee80211_vif_use_channel(sdata, chandef,
 542                                         IEEE80211_CHANCTX_EXCLUSIVE);
 543                 }
 544         } else if (local->open_count == local->monitors) {
 545                 local->_oper_chandef = *chandef;
 546                 ieee80211_hw_config(local, 0);
 547         }
 548
 549         if (ret == 0)
 550                 local->monitor_chandef = *chandef;
 551         mutex_unlock(&local->iflist_mtx);
 552         mutex_unlock(&local->mtx);
 553
 554         return ret;
 555 }
 556
 557 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 558                                     const u8 *resp, size_t resp_len,
 559                                     const struct ieee80211_csa_settings *csa)
 560 {
 561         struct probe_resp *new, *old;
 562
 563         if (!resp || !resp_len)
 564                 return 1;
 565
 566         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 567
 568         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 569         if (!new)
 570                 return -ENOMEM;
 571
 572         new->len = resp_len;
 573         memcpy(new->data, resp, resp_len);
 574
 575         if (csa)
 576                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 577                        csa->n_counter_offsets_presp *
 578                        sizeof(new->csa_counter_offsets[0]));
 579
 580         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 581         if (old)
 582                 kfree_rcu(old, rcu_head);
 583
 584         return 0;
 585 }
 586
 587 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 588                                    struct cfg80211_beacon_data *params,
 589                                    const struct ieee80211_csa_settings *csa)
 590 {
 591         struct beacon_data *new, *old;
 592         int new_head_len, new_tail_len;
 593         int size, err;
 594         u32 changed = BSS_CHANGED_BEACON;
 595
 596         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 597
 598
 599         /* Need to have a beacon head if we don't have one yet */
 600         if (!params->head && !old)
 601                 return -EINVAL;
 602
 603         /* new or old head? */
 604         if (params->head)
 605                 new_head_len = params->head_len;
 606         else
 607                 new_head_len = old->head_len;
 608
 609         /* new or old tail? */
 610         if (params->tail || !old)
 611                 /* params->tail_len will be zero for !params->tail */
 612                 new_tail_len = params->tail_len;
 613         else
 614                 new_tail_len = old->tail_len;
 615
 616         size = sizeof(*new) + new_head_len + new_tail_len;
 617
 618         new = kzalloc(size, GFP_KERNEL);
 619         if (!new)
 620                 return -ENOMEM;
 621
 622         /* start filling the new info now */
 623
 624         /*
 625          * pointers go into the block we allocated,
 626          * memory is | beacon_data | head | tail |
 627          */
 628         new->head = ((u8 *) new) + sizeof(*new);
 629         new->tail = new->head + new_head_len;
 630         new->head_len = new_head_len;
 631         new->tail_len = new_tail_len;
 632
 633         if (csa) {
 634                 new->csa_current_counter = csa->count;
 635                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 636                        csa->n_counter_offsets_beacon *
 637                        sizeof(new->csa_counter_offsets[0]));
 638         }
 639
 640         /* copy in head */
 641         if (params->head)
 642                 memcpy(new->head, params->head, new_head_len);
 643         else
 644                 memcpy(new->head, old->head, new_head_len);
 645
 646         /* copy in optional tail */
 647         if (params->tail)
 648                 memcpy(new->tail, params->tail, new_tail_len);
 649         else
 650                 if (old)
 651                         memcpy(new->tail, old->tail, new_tail_len);
 652
 653         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 654                                        params->probe_resp_len, csa);
 655         if (err < 0)
 656                 return err;
 657         if (err == 0)
 658                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 659
 660         rcu_assign_pointer(sdata->u.ap.beacon, new);
 661
 662         if (old)
 663                 kfree_rcu(old, rcu_head);
 664
 665         return changed;
 666 }
 667
 668 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 669                               struct cfg80211_ap_settings *params)
 670 {
 671         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 672         struct ieee80211_local *local = sdata->local;
 673         struct beacon_data *old;
 674         struct ieee80211_sub_if_data *vlan;
 675         u32 changed = BSS_CHANGED_BEACON_INT |
 676                       BSS_CHANGED_BEACON_ENABLED |
 677                       BSS_CHANGED_BEACON |
 678                       BSS_CHANGED_SSID |
 679                       BSS_CHANGED_P2P_PS |
 680                       BSS_CHANGED_TXPOWER;
 681         int err;
 682
 683         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 684         if (old)
 685                 return -EALREADY;
 686
 687         switch (params->smps_mode) {
 688         case NL80211_SMPS_OFF:
 689                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 690                 break;
 691         case NL80211_SMPS_STATIC:
 692                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 693                 break;
 694         case NL80211_SMPS_DYNAMIC:
 695                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 696                 break;
 697         default:
 698                 return -EINVAL;
 699         }
 700         sdata->needed_rx_chains = sdata->local->rx_chains;
 701
 702         mutex_lock(&local->mtx);
 703         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 704                                         IEEE80211_CHANCTX_SHARED);
 705         if (!err)
 706                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 707         mutex_unlock(&local->mtx);
 708         if (err)
 709                 return err;
 710
 711         /*
 712          * Apply control port protocol, this allows us to
 713          * not encrypt dynamic WEP control frames.
 714          */
 715         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 716         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 717         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 718                                                         &params->crypto,
 719                                                         sdata->vif.type);
 720
 721         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 722                 vlan->control_port_protocol =
 723                         params->crypto.control_port_ethertype;
 724                 vlan->control_port_no_encrypt =
 725                         params->crypto.control_port_no_encrypt;
 726                 vlan->encrypt_headroom =
 727                         ieee80211_cs_headroom(sdata->local,
 728                                               &params->crypto,
 729                                               vlan->vif.type);
 730         }
 731
 732         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 733         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 734         sdata->vif.bss_conf.enable_beacon = true;
 735
 736         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 737         if (params->ssid_len)
 738                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 739                        params->ssid_len);
 740         sdata->vif.bss_conf.hidden_ssid =
 741                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 742
 743         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 744                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 745         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 746                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 747         if (params->p2p_opp_ps)
 748                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 749                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 750
 751         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 752         if (err < 0) {
 753                 ieee80211_vif_release_channel(sdata);
 754                 return err;
 755         }
 756         changed |= err;
 757
 758         err = drv_start_ap(sdata->local, sdata);
 759         if (err) {
 760                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 761
 762                 if (old)
 763                         kfree_rcu(old, rcu_head);
 764                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 765                 ieee80211_vif_release_channel(sdata);
 766                 return err;
 767         }
 768
 769         ieee80211_recalc_dtim(local, sdata);
 770         ieee80211_bss_info_change_notify(sdata, changed);
 771
 772         netif_carrier_on(dev);
 773         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 774                 netif_carrier_on(vlan->dev);
 775
 776         return 0;
 777 }
 778
 779 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 780                                    struct cfg80211_beacon_data *params)
 781 {
 782         struct ieee80211_sub_if_data *sdata;
 783         struct beacon_data *old;
 784         int err;
 785
 786         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 787         sdata_assert_lock(sdata);
 788
 789         /* don't allow changing the beacon while CSA is in place - offset
 790          * of channel switch counter may change
 791          */
 792         if (sdata->vif.csa_active)
 793                 return -EBUSY;
 794
 795         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 796         if (!old)
 797                 return -ENOENT;
 798
 799         err = ieee80211_assign_beacon(sdata, params, NULL);
 800         if (err < 0)
 801                 return err;
 802         ieee80211_bss_info_change_notify(sdata, err);
 803         return 0;
 804 }
 805
 806 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 807 {
 808         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 809         struct ieee80211_sub_if_data *vlan;
 810         struct ieee80211_local *local = sdata->local;
 811         struct beacon_data *old_beacon;
 812         struct probe_resp *old_probe_resp;
 813         struct cfg80211_chan_def chandef;
 814
 815         sdata_assert_lock(sdata);
 816
 817         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 818         if (!old_beacon)
 819                 return -ENOENT;
 820         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 821
 822         /* abort any running channel switch */
 823         mutex_lock(&local->mtx);
 824         sdata->vif.csa_active = false;
 825         if (sdata->csa_block_tx) {
 826                 ieee80211_wake_vif_queues(local, sdata,
 827                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 828                 sdata->csa_block_tx = false;
 829         }
 830
 831         mutex_unlock(&local->mtx);
 832
 833         kfree(sdata->u.ap.next_beacon);
 834         sdata->u.ap.next_beacon = NULL;
 835
 836         /* turn off carrier for this interface and dependent VLANs */
 837         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 838                 netif_carrier_off(vlan->dev);
 839         netif_carrier_off(dev);
 840
 841         /* remove beacon and probe response */
 842         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 843         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 844         kfree_rcu(old_beacon, rcu_head);
 845         if (old_probe_resp)
 846                 kfree_rcu(old_probe_resp, rcu_head);
 847         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 848
 849         __sta_info_flush(sdata, true);
 850         ieee80211_free_keys(sdata, true);
 851
 852         sdata->vif.bss_conf.enable_beacon = false;
 853         sdata->vif.bss_conf.ssid_len = 0;
 854         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 855         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 856
 857         if (sdata->wdev.cac_started) {
 858                 chandef = sdata->vif.bss_conf.chandef;
 859                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 860                 cfg80211_cac_event(sdata->dev, &chandef,
 861                                    NL80211_RADAR_CAC_ABORTED,
 862                                    GFP_KERNEL);
 863         }
 864
 865         drv_stop_ap(sdata->local, sdata);
 866
 867         /* free all potentially still buffered bcast frames */
 868         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 869         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 870
 871         mutex_lock(&local->mtx);
 872         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 873         ieee80211_vif_release_channel(sdata);
 874         mutex_unlock(&local->mtx);
 875
 876         return 0;
 877 }
 878
 879 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 880 struct iapp_layer2_update {
 881         u8 da[ETH_ALEN];        /* broadcast */
 882         u8 sa[ETH_ALEN];        /* STA addr */
 883         __be16 len;             /* 6 */
 884         u8 dsap;                /* 0 */
 885         u8 ssap;                /* 0 */
 886         u8 control;
 887         u8 xid_info[3];
 888 } __packed;
 889
 890 static void ieee80211_send_layer2_update(struct sta_info *sta)
 891 {
 892         struct iapp_layer2_update *msg;
 893         struct sk_buff *skb;
 894
 895         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 896          * bridge devices */
 897
 898         skb = dev_alloc_skb(sizeof(*msg));
 899         if (!skb)
 900                 return;
 901         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 902
 903         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 904          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 905
 906         eth_broadcast_addr(msg->da);
 907         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 908         msg->len = htons(6);
 909         msg->dsap = 0;
 910         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 911         msg->control = 0xaf;    /* XID response lsb.1111F101.
 912                                  * F=0 (no poll command; unsolicited frame) */
 913         msg->xid_info[0] = 0x81;        /* XID format identifier */
 914         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 915         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 916
 917         skb->dev = sta->sdata->dev;
 918         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 919         memset(skb->cb, 0, sizeof(skb->cb));
 920         netif_rx_ni(skb);
 921 }
 922
 923 static int sta_apply_auth_flags(struct ieee80211_local *local,
 924                                 struct sta_info *sta,
 925                                 u32 mask, u32 set)
 926 {
 927         int ret;
 928
 929         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 930             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 931             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 932                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 933                 if (ret)
 934                         return ret;
 935         }
 936
 937         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 938             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 939             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 940                 /*
 941                  * When peer becomes associated, init rate control as
 942                  * well. Some drivers require rate control initialized
 943                  * before drv_sta_state() is called.
 944                  */
 945                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
 946                         rate_control_rate_init(sta);
 947
 948                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 949                 if (ret)
 950                         return ret;
 951         }
 952
 953         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 954                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 955                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 956                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 957                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 958                 else
 959                         ret = 0;
 960                 if (ret)
 961                         return ret;
 962         }
 963
 964         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 965             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
 966             test_sta_flag(sta, WLAN_STA_ASSOC)) {
 967                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 968                 if (ret)
 969                         return ret;
 970         }
 971
 972         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 973             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 974             test_sta_flag(sta, WLAN_STA_AUTH)) {
 975                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 976                 if (ret)
 977                         return ret;
 978         }
 979
 980         return 0;
 981 }
 982
 983 static void sta_apply_mesh_params(struct ieee80211_local *local,
 984                                   struct sta_info *sta,
 985                                   struct station_parameters *params)
 986 {
 987 #ifdef CONFIG_MAC80211_MESH
 988         struct ieee80211_sub_if_data *sdata = sta->sdata;
 989         u32 changed = 0;
 990
 991         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
 992                 switch (params->plink_state) {
 993                 case NL80211_PLINK_ESTAB:
 994                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
 995                                 changed = mesh_plink_inc_estab_count(sdata);
 996                         sta->mesh->plink_state = params->plink_state;
 997
 998                         ieee80211_mps_sta_status_update(sta);
 999                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1000                                       sdata->u.mesh.mshcfg.power_mode);
1001                         break;
1002                 case NL80211_PLINK_LISTEN:
1003                 case NL80211_PLINK_BLOCKED:
1004                 case NL80211_PLINK_OPN_SNT:
1005                 case NL80211_PLINK_OPN_RCVD:
1006                 case NL80211_PLINK_CNF_RCVD:
1007                 case NL80211_PLINK_HOLDING:
1008                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1009                                 changed = mesh_plink_dec_estab_count(sdata);
1010                         sta->mesh->plink_state = params->plink_state;
1011
1012                         ieee80211_mps_sta_status_update(sta);
1013                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1014                                         NL80211_MESH_POWER_UNKNOWN);
1015                         break;
1016                 default:
1017                         /*  nothing  */
1018                         break;
1019                 }
1020         }
1021
1022         switch (params->plink_action) {
1023         case NL80211_PLINK_ACTION_NO_ACTION:
1024                 /* nothing */
1025                 break;
1026         case NL80211_PLINK_ACTION_OPEN:
1027                 changed |= mesh_plink_open(sta);
1028                 break;
1029         case NL80211_PLINK_ACTION_BLOCK:
1030                 changed |= mesh_plink_block(sta);
1031                 break;
1032         }
1033
1034         if (params->local_pm)
1035                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1036                                                           params->local_pm);
1037
1038         ieee80211_mbss_info_change_notify(sdata, changed);
1039 #endif
1040 }
1041
1042 static int sta_apply_parameters(struct ieee80211_local *local,
1043                                 struct sta_info *sta,
1044                                 struct station_parameters *params)
1045 {
1046         int ret = 0;
1047         struct ieee80211_supported_band *sband;
1048         struct ieee80211_sub_if_data *sdata = sta->sdata;
1049         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1050         u32 mask, set;
1051
1052         sband = local->hw.wiphy->bands[band];
1053
1054         mask = params->sta_flags_mask;
1055         set = params->sta_flags_set;
1056
1057         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1058                 /*
1059                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1060                  * API but must follow AUTHENTICATED for driver state.
1061                  */
1062                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1063                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1064                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1065                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1066         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1067                 /*
1068                  * TDLS -- everything follows authorized, but
1069                  * only becoming authorized is possible, not
1070                  * going back
1071                  */
1072                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1073                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1074                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1075                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1076                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1077                 }
1078         }
1079
1080         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1081             local->hw.queues >= IEEE80211_NUM_ACS)
1082                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1083
1084         /* auth flags will be set later for TDLS,
1085          * and for unassociated stations that move to assocaited */
1086         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1087             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1088               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1089                 ret = sta_apply_auth_flags(local, sta, mask, set);
1090                 if (ret)
1091                         return ret;
1092         }
1093
1094         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1095                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1096                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1097                 else
1098                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1099         }
1100
1101         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1102                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1103                 if (set & BIT(NL80211_STA_FLAG_MFP))
1104                         set_sta_flag(sta, WLAN_STA_MFP);
1105                 else
1106                         clear_sta_flag(sta, WLAN_STA_MFP);
1107         }
1108
1109         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1110                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1111                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1112                 else
1113                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1114         }
1115
1116         /* mark TDLS channel switch support, if the AP allows it */
1117         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1118             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1119             params->ext_capab_len >= 4 &&
1120             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1121                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1122
1123         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1124             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1125             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1126             params->ext_capab_len >= 8 &&
1127             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1128                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1129
1130         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1131                 sta->sta.uapsd_queues = params->uapsd_queues;
1132                 sta->sta.max_sp = params->max_sp;
1133         }
1134
1135         /* The sender might not have sent the last bit, consider it to be 0 */
1136         if (params->ext_capab_len >= 8) {
1137                 u8 val = (params->ext_capab[7] &
1138                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1139
1140                 /* we did get all the bits, take the MSB as well */
1141                 if (params->ext_capab_len >= 9) {
1142                         u8 val_msb = params->ext_capab[8] &
1143                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1144                         val_msb <<= 1;
1145                         val |= val_msb;
1146                 }
1147
1148                 switch (val) {
1149                 case 1:
1150                         sta->sta.max_amsdu_subframes = 32;
1151                         break;
1152                 case 2:
1153                         sta->sta.max_amsdu_subframes = 16;
1154                         break;
1155                 case 3:
1156                         sta->sta.max_amsdu_subframes = 8;
1157                         break;
1158                 default:
1159                         sta->sta.max_amsdu_subframes = 0;
1160                 }
1161         }
1162
1163         /*
1164          * cfg80211 validates this (1-2007) and allows setting the AID
1165          * only when creating a new station entry
1166          */
1167         if (params->aid)
1168                 sta->sta.aid = params->aid;
1169
1170         /*
1171          * Some of the following updates would be racy if called on an
1172          * existing station, via ieee80211_change_station(). However,
1173          * all such changes are rejected by cfg80211 except for updates
1174          * changing the supported rates on an existing but not yet used
1175          * TDLS peer.
1176          */
1177
1178         if (params->listen_interval >= 0)
1179                 sta->listen_interval = params->listen_interval;
1180
1181         if (params->supported_rates) {
1182                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1183                                          sband, params->supported_rates,
1184                                          params->supported_rates_len,
1185                                          &sta->sta.supp_rates[band]);
1186         }
1187
1188         if (params->ht_capa)
1189                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1190                                                   params->ht_capa, sta);
1191
1192         /* VHT can override some HT caps such as the A-MSDU max length */
1193         if (params->vht_capa)
1194                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1195                                                     params->vht_capa, sta);
1196
1197         if (params->opmode_notif_used) {
1198                 /* returned value is only needed for rc update, but the
1199                  * rc isn't initialized here yet, so ignore it
1200                  */
1201                 __ieee80211_vht_handle_opmode(sdata, sta,
1202                                               params->opmode_notif, band);
1203         }
1204
1205         if (ieee80211_vif_is_mesh(&sdata->vif))
1206                 sta_apply_mesh_params(local, sta, params);
1207
1208         /* set the STA state after all sta info from usermode has been set */
1209         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1210             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1211                 ret = sta_apply_auth_flags(local, sta, mask, set);
1212                 if (ret)
1213                         return ret;
1214         }
1215
1216         return 0;
1217 }
1218
1219 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1220                                  const u8 *mac,
1221                                  struct station_parameters *params)
1222 {
1223         struct ieee80211_local *local = wiphy_priv(wiphy);
1224         struct sta_info *sta;
1225         struct ieee80211_sub_if_data *sdata;
1226         int err;
1227         int layer2_update;
1228
1229         if (params->vlan) {
1230                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1231
1232                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1233                     sdata->vif.type != NL80211_IFTYPE_AP)
1234                         return -EINVAL;
1235         } else
1236                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1237
1238         if (ether_addr_equal(mac, sdata->vif.addr))
1239                 return -EINVAL;
1240
1241         if (is_multicast_ether_addr(mac))
1242                 return -EINVAL;
1243
1244         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1245         if (!sta)
1246                 return -ENOMEM;
1247
1248         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1249                 sta->sta.tdls = true;
1250
1251         err = sta_apply_parameters(local, sta, params);
1252         if (err) {
1253                 sta_info_free(local, sta);
1254                 return err;
1255         }
1256
1257         /*
1258          * for TDLS and for unassociated station, rate control should be
1259          * initialized only when rates are known and station is marked
1260          * authorized/associated
1261          */
1262         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1263             test_sta_flag(sta, WLAN_STA_ASSOC))
1264                 rate_control_rate_init(sta);
1265
1266         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1267                 sdata->vif.type == NL80211_IFTYPE_AP;
1268
1269         err = sta_info_insert_rcu(sta);
1270         if (err) {
1271                 rcu_read_unlock();
1272                 return err;
1273         }
1274
1275         if (layer2_update)
1276                 ieee80211_send_layer2_update(sta);
1277
1278         rcu_read_unlock();
1279
1280         return 0;
1281 }
1282
1283 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1284                                  struct station_del_parameters *params)
1285 {
1286         struct ieee80211_sub_if_data *sdata;
1287
1288         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1289
1290         if (params->mac)
1291                 return sta_info_destroy_addr_bss(sdata, params->mac);
1292
1293         sta_info_flush(sdata);
1294         return 0;
1295 }
1296
1297 static int ieee80211_change_station(struct wiphy *wiphy,
1298                                     struct net_device *dev, const u8 *mac,
1299                                     struct station_parameters *params)
1300 {
1301         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1302         struct ieee80211_local *local = wiphy_priv(wiphy);
1303         struct sta_info *sta;
1304         struct ieee80211_sub_if_data *vlansdata;
1305         enum cfg80211_station_type statype;
1306         int err;
1307
1308         mutex_lock(&local->sta_mtx);
1309
1310         sta = sta_info_get_bss(sdata, mac);
1311         if (!sta) {
1312                 err = -ENOENT;
1313                 goto out_err;
1314         }
1315
1316         switch (sdata->vif.type) {
1317         case NL80211_IFTYPE_MESH_POINT:
1318                 if (sdata->u.mesh.user_mpm)
1319                         statype = CFG80211_STA_MESH_PEER_USER;
1320                 else
1321                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1322                 break;
1323         case NL80211_IFTYPE_ADHOC:
1324                 statype = CFG80211_STA_IBSS;
1325                 break;
1326         case NL80211_IFTYPE_STATION:
1327                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1328                         statype = CFG80211_STA_AP_STA;
1329                         break;
1330                 }
1331                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1332                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1333                 else
1334                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1335                 break;
1336         case NL80211_IFTYPE_AP:
1337         case NL80211_IFTYPE_AP_VLAN:
1338                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1339                         statype = CFG80211_STA_AP_CLIENT;
1340                 else
1341                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1342                 break;
1343         default:
1344                 err = -EOPNOTSUPP;
1345                 goto out_err;
1346         }
1347
1348         err = cfg80211_check_station_change(wiphy, params, statype);
1349         if (err)
1350                 goto out_err;
1351
1352         if (params->vlan && params->vlan != sta->sdata->dev) {
1353                 bool prev_4addr = false;
1354                 bool new_4addr = false;
1355
1356                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1357
1358                 if (params->vlan->ieee80211_ptr->use_4addr) {
1359                         if (vlansdata->u.vlan.sta) {
1360                                 err = -EBUSY;
1361                                 goto out_err;
1362                         }
1363
1364                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1365                         new_4addr = true;
1366                 }
1367
1368                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1369                     sta->sdata->u.vlan.sta) {
1370                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1371                         prev_4addr = true;
1372                 }
1373
1374                 sta->sdata = vlansdata;
1375                 ieee80211_check_fast_xmit(sta);
1376
1377                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1378                     prev_4addr != new_4addr) {
1379                         if (new_4addr)
1380                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1381                         else
1382                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1383                 }
1384
1385                 ieee80211_send_layer2_update(sta);
1386         }
1387
1388         err = sta_apply_parameters(local, sta, params);
1389         if (err)
1390                 goto out_err;
1391
1392         mutex_unlock(&local->sta_mtx);
1393
1394         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1395              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1396             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1397             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1398             sta_info_tx_streams(sta) != 1) {
1399                 ht_dbg(sta->sdata,
1400                        "%pM just authorized and MIMO capable - update SMPS\n",
1401                        sta->sta.addr);
1402                 ieee80211_send_smps_action(sta->sdata,
1403                         sta->sdata->bss->req_smps,
1404                         sta->sta.addr,
1405                         sta->sdata->vif.bss_conf.bssid);
1406         }
1407
1408         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1409             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1410                 ieee80211_recalc_ps(local);
1411                 ieee80211_recalc_ps_vif(sdata);
1412         }
1413
1414         return 0;
1415 out_err:
1416         mutex_unlock(&local->sta_mtx);
1417         return err;
1418 }
1419
1420 #ifdef CONFIG_MAC80211_MESH
1421 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1422                                const u8 *dst, const u8 *next_hop)
1423 {
1424         struct ieee80211_sub_if_data *sdata;
1425         struct mesh_path *mpath;
1426         struct sta_info *sta;
1427
1428         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1429
1430         rcu_read_lock();
1431         sta = sta_info_get(sdata, next_hop);
1432         if (!sta) {
1433                 rcu_read_unlock();
1434                 return -ENOENT;
1435         }
1436
1437         mpath = mesh_path_add(sdata, dst);
1438         if (IS_ERR(mpath)) {
1439                 rcu_read_unlock();
1440                 return PTR_ERR(mpath);
1441         }
1442
1443         mesh_path_fix_nexthop(mpath, sta);
1444
1445         rcu_read_unlock();
1446         return 0;
1447 }
1448
1449 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1450                                const u8 *dst)
1451 {
1452         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1453
1454         if (dst)
1455                 return mesh_path_del(sdata, dst);
1456
1457         mesh_path_flush_by_iface(sdata);
1458         return 0;
1459 }
1460
1461 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1462                                   const u8 *dst, const u8 *next_hop)
1463 {
1464         struct ieee80211_sub_if_data *sdata;
1465         struct mesh_path *mpath;
1466         struct sta_info *sta;
1467
1468         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1469
1470         rcu_read_lock();
1471
1472         sta = sta_info_get(sdata, next_hop);
1473         if (!sta) {
1474                 rcu_read_unlock();
1475                 return -ENOENT;
1476         }
1477
1478         mpath = mesh_path_lookup(sdata, dst);
1479         if (!mpath) {
1480                 rcu_read_unlock();
1481                 return -ENOENT;
1482         }
1483
1484         mesh_path_fix_nexthop(mpath, sta);
1485
1486         rcu_read_unlock();
1487         return 0;
1488 }
1489
1490 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1491                             struct mpath_info *pinfo)
1492 {
1493         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1494
1495         if (next_hop_sta)
1496                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1497         else
1498                 eth_zero_addr(next_hop);
1499
1500         memset(pinfo, 0, sizeof(*pinfo));
1501
1502         pinfo->generation = mesh_paths_generation;
1503
1504         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1505                         MPATH_INFO_SN |
1506                         MPATH_INFO_METRIC |
1507                         MPATH_INFO_EXPTIME |
1508                         MPATH_INFO_DISCOVERY_TIMEOUT |
1509                         MPATH_INFO_DISCOVERY_RETRIES |
1510                         MPATH_INFO_FLAGS;
1511
1512         pinfo->frame_qlen = mpath->frame_queue.qlen;
1513         pinfo->sn = mpath->sn;
1514         pinfo->metric = mpath->metric;
1515         if (time_before(jiffies, mpath->exp_time))
1516                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1517         pinfo->discovery_timeout =
1518                         jiffies_to_msecs(mpath->discovery_timeout);
1519         pinfo->discovery_retries = mpath->discovery_retries;
1520         if (mpath->flags & MESH_PATH_ACTIVE)
1521                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1522         if (mpath->flags & MESH_PATH_RESOLVING)
1523                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1524         if (mpath->flags & MESH_PATH_SN_VALID)
1525                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1526         if (mpath->flags & MESH_PATH_FIXED)
1527                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1528         if (mpath->flags & MESH_PATH_RESOLVED)
1529                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1530 }
1531
1532 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1533                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1534
1535 {
1536         struct ieee80211_sub_if_data *sdata;
1537         struct mesh_path *mpath;
1538
1539         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1540
1541         rcu_read_lock();
1542         mpath = mesh_path_lookup(sdata, dst);
1543         if (!mpath) {
1544                 rcu_read_unlock();
1545                 return -ENOENT;
1546         }
1547         memcpy(dst, mpath->dst, ETH_ALEN);
1548         mpath_set_pinfo(mpath, next_hop, pinfo);
1549         rcu_read_unlock();
1550         return 0;
1551 }
1552
1553 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1554                                 int idx, u8 *dst, u8 *next_hop,
1555                                 struct mpath_info *pinfo)
1556 {
1557         struct ieee80211_sub_if_data *sdata;
1558         struct mesh_path *mpath;
1559
1560         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1561
1562         rcu_read_lock();
1563         mpath = mesh_path_lookup_by_idx(sdata, idx);
1564         if (!mpath) {
1565                 rcu_read_unlock();
1566                 return -ENOENT;
1567         }
1568         memcpy(dst, mpath->dst, ETH_ALEN);
1569         mpath_set_pinfo(mpath, next_hop, pinfo);
1570         rcu_read_unlock();
1571         return 0;
1572 }
1573
1574 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1575                           struct mpath_info *pinfo)
1576 {
1577         memset(pinfo, 0, sizeof(*pinfo));
1578         memcpy(mpp, mpath->mpp, ETH_ALEN);
1579
1580         pinfo->generation = mpp_paths_generation;
1581 }
1582
1583 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1584                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1585
1586 {
1587         struct ieee80211_sub_if_data *sdata;
1588         struct mesh_path *mpath;
1589
1590         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1591
1592         rcu_read_lock();
1593         mpath = mpp_path_lookup(sdata, dst);
1594         if (!mpath) {
1595                 rcu_read_unlock();
1596                 return -ENOENT;
1597         }
1598         memcpy(dst, mpath->dst, ETH_ALEN);
1599         mpp_set_pinfo(mpath, mpp, pinfo);
1600         rcu_read_unlock();
1601         return 0;
1602 }
1603
1604 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1605                               int idx, u8 *dst, u8 *mpp,
1606                               struct mpath_info *pinfo)
1607 {
1608         struct ieee80211_sub_if_data *sdata;
1609         struct mesh_path *mpath;
1610
1611         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1612
1613         rcu_read_lock();
1614         mpath = mpp_path_lookup_by_idx(sdata, idx);
1615         if (!mpath) {
1616                 rcu_read_unlock();
1617                 return -ENOENT;
1618         }
1619         memcpy(dst, mpath->dst, ETH_ALEN);
1620         mpp_set_pinfo(mpath, mpp, pinfo);
1621         rcu_read_unlock();
1622         return 0;
1623 }
1624
1625 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1626                                 struct net_device *dev,
1627                                 struct mesh_config *conf)
1628 {
1629         struct ieee80211_sub_if_data *sdata;
1630         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1631
1632         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1633         return 0;
1634 }
1635
1636 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1637 {
1638         return (mask >> (parm-1)) & 0x1;
1639 }
1640
1641 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1642                 const struct mesh_setup *setup)
1643 {
1644         u8 *new_ie;
1645         const u8 *old_ie;
1646         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1647                                         struct ieee80211_sub_if_data, u.mesh);
1648
1649         /* allocate information elements */
1650         new_ie = NULL;
1651         old_ie = ifmsh->ie;
1652
1653         if (setup->ie_len) {
1654                 new_ie = kmemdup(setup->ie, setup->ie_len,
1655                                 GFP_KERNEL);
1656                 if (!new_ie)
1657                         return -ENOMEM;
1658         }
1659         ifmsh->ie_len = setup->ie_len;
1660         ifmsh->ie = new_ie;
1661         kfree(old_ie);
1662
1663         /* now copy the rest of the setup parameters */
1664         ifmsh->mesh_id_len = setup->mesh_id_len;
1665         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1666         ifmsh->mesh_sp_id = setup->sync_method;
1667         ifmsh->mesh_pp_id = setup->path_sel_proto;
1668         ifmsh->mesh_pm_id = setup->path_metric;
1669         ifmsh->user_mpm = setup->user_mpm;
1670         ifmsh->mesh_auth_id = setup->auth_id;
1671         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1672         if (setup->is_authenticated)
1673                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1674         if (setup->is_secure)
1675                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1676
1677         /* mcast rate setting in Mesh Node */
1678         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1679                                                 sizeof(setup->mcast_rate));
1680         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1681
1682         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1683         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1684
1685         return 0;
1686 }
1687
1688 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1689                                         struct net_device *dev, u32 mask,
1690                                         const struct mesh_config *nconf)
1691 {
1692         struct mesh_config *conf;
1693         struct ieee80211_sub_if_data *sdata;
1694         struct ieee80211_if_mesh *ifmsh;
1695
1696         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1697         ifmsh = &sdata->u.mesh;
1698
1699         /* Set the config options which we are interested in setting */
1700         conf = &(sdata->u.mesh.mshcfg);
1701         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1702                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1703         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1704                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1705         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1706                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1707         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1708                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1709         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1710                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1711         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1712                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1713         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1714                 conf->element_ttl = nconf->element_ttl;
1715         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1716                 if (ifmsh->user_mpm)
1717                         return -EBUSY;
1718                 conf->auto_open_plinks = nconf->auto_open_plinks;
1719         }
1720         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1721                 conf->dot11MeshNbrOffsetMaxNeighbor =
1722                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1723         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1724                 conf->dot11MeshHWMPmaxPREQretries =
1725                         nconf->dot11MeshHWMPmaxPREQretries;
1726         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1727                 conf->path_refresh_time = nconf->path_refresh_time;
1728         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1729                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1730         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1731                 conf->dot11MeshHWMPactivePathTimeout =
1732                         nconf->dot11MeshHWMPactivePathTimeout;
1733         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1734                 conf->dot11MeshHWMPpreqMinInterval =
1735                         nconf->dot11MeshHWMPpreqMinInterval;
1736         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1737                 conf->dot11MeshHWMPperrMinInterval =
1738                         nconf->dot11MeshHWMPperrMinInterval;
1739         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1740                            mask))
1741                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1742                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1743         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1744                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1745                 ieee80211_mesh_root_setup(ifmsh);
1746         }
1747         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1748                 /* our current gate announcement implementation rides on root
1749                  * announcements, so require this ifmsh to also be a root node
1750                  * */
1751                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1752                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1753                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1754                         ieee80211_mesh_root_setup(ifmsh);
1755                 }
1756                 conf->dot11MeshGateAnnouncementProtocol =
1757                         nconf->dot11MeshGateAnnouncementProtocol;
1758         }
1759         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1760                 conf->dot11MeshHWMPRannInterval =
1761                         nconf->dot11MeshHWMPRannInterval;
1762         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1763                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1764         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1765                 /* our RSSI threshold implementation is supported only for
1766                  * devices that report signal in dBm.
1767                  */
1768                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1769                         return -ENOTSUPP;
1770                 conf->rssi_threshold = nconf->rssi_threshold;
1771         }
1772         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1773                 conf->ht_opmode = nconf->ht_opmode;
1774                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1775                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1776         }
1777         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1778                 conf->dot11MeshHWMPactivePathToRootTimeout =
1779                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1780         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1781                 conf->dot11MeshHWMProotInterval =
1782                         nconf->dot11MeshHWMProotInterval;
1783         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1784                 conf->dot11MeshHWMPconfirmationInterval =
1785                         nconf->dot11MeshHWMPconfirmationInterval;
1786         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1787                 conf->power_mode = nconf->power_mode;
1788                 ieee80211_mps_local_status_update(sdata);
1789         }
1790         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1791                 conf->dot11MeshAwakeWindowDuration =
1792                         nconf->dot11MeshAwakeWindowDuration;
1793         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1794                 conf->plink_timeout = nconf->plink_timeout;
1795         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1796         return 0;
1797 }
1798
1799 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1800                                const struct mesh_config *conf,
1801                                const struct mesh_setup *setup)
1802 {
1803         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1804         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1805         int err;
1806
1807         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1808         err = copy_mesh_setup(ifmsh, setup);
1809         if (err)
1810                 return err;
1811
1812         /* can mesh use other SMPS modes? */
1813         sdata->smps_mode = IEEE80211_SMPS_OFF;
1814         sdata->needed_rx_chains = sdata->local->rx_chains;
1815
1816         mutex_lock(&sdata->local->mtx);
1817         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1818                                         IEEE80211_CHANCTX_SHARED);
1819         mutex_unlock(&sdata->local->mtx);
1820         if (err)
1821                 return err;
1822
1823         return ieee80211_start_mesh(sdata);
1824 }
1825
1826 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1827 {
1828         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1829
1830         ieee80211_stop_mesh(sdata);
1831         mutex_lock(&sdata->local->mtx);
1832         ieee80211_vif_release_channel(sdata);
1833         mutex_unlock(&sdata->local->mtx);
1834
1835         return 0;
1836 }
1837 #endif
1838
1839 static int ieee80211_change_bss(struct wiphy *wiphy,
1840                                 struct net_device *dev,
1841                                 struct bss_parameters *params)
1842 {
1843         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1844         enum ieee80211_band band;
1845         u32 changed = 0;
1846
1847         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1848                 return -ENOENT;
1849
1850         band = ieee80211_get_sdata_band(sdata);
1851
1852         if (params->use_cts_prot >= 0) {
1853                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1854                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1855         }
1856         if (params->use_short_preamble >= 0) {
1857                 sdata->vif.bss_conf.use_short_preamble =
1858                         params->use_short_preamble;
1859                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1860         }
1861
1862         if (!sdata->vif.bss_conf.use_short_slot &&
1863             band == IEEE80211_BAND_5GHZ) {
1864                 sdata->vif.bss_conf.use_short_slot = true;
1865                 changed |= BSS_CHANGED_ERP_SLOT;
1866         }
1867
1868         if (params->use_short_slot_time >= 0) {
1869                 sdata->vif.bss_conf.use_short_slot =
1870                         params->use_short_slot_time;
1871                 changed |= BSS_CHANGED_ERP_SLOT;
1872         }
1873
1874         if (params->basic_rates) {
1875                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1876                                          wiphy->bands[band],
1877                                          params->basic_rates,
1878                                          params->basic_rates_len,
1879                                          &sdata->vif.bss_conf.basic_rates);
1880                 changed |= BSS_CHANGED_BASIC_RATES;
1881         }
1882
1883         if (params->ap_isolate >= 0) {
1884                 if (params->ap_isolate)
1885                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1886                 else
1887                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1888         }
1889
1890         if (params->ht_opmode >= 0) {
1891                 sdata->vif.bss_conf.ht_operation_mode =
1892                         (u16) params->ht_opmode;
1893                 changed |= BSS_CHANGED_HT;
1894         }
1895
1896         if (params->p2p_ctwindow >= 0) {
1897                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1898                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1899                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1900                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1901                 changed |= BSS_CHANGED_P2P_PS;
1902         }
1903
1904         if (params->p2p_opp_ps > 0) {
1905                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1906                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1907                 changed |= BSS_CHANGED_P2P_PS;
1908         } else if (params->p2p_opp_ps == 0) {
1909                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1910                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1911                 changed |= BSS_CHANGED_P2P_PS;
1912         }
1913
1914         ieee80211_bss_info_change_notify(sdata, changed);
1915
1916         return 0;
1917 }
1918
1919 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1920                                     struct net_device *dev,
1921                                     struct ieee80211_txq_params *params)
1922 {
1923         struct ieee80211_local *local = wiphy_priv(wiphy);
1924         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1925         struct ieee80211_tx_queue_params p;
1926
1927         if (!local->ops->conf_tx)
1928                 return -EOPNOTSUPP;
1929
1930         if (local->hw.queues < IEEE80211_NUM_ACS)
1931                 return -EOPNOTSUPP;
1932
1933         memset(&p, 0, sizeof(p));
1934         p.aifs = params->aifs;
1935         p.cw_max = params->cwmax;
1936         p.cw_min = params->cwmin;
1937         p.txop = params->txop;
1938
1939         /*
1940          * Setting tx queue params disables u-apsd because it's only
1941          * called in master mode.
1942          */
1943         p.uapsd = false;
1944
1945         sdata->tx_conf[params->ac] = p;
1946         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1947                 wiphy_debug(local->hw.wiphy,
1948                             "failed to set TX queue parameters for AC %d\n",
1949                             params->ac);
1950                 return -EINVAL;
1951         }
1952
1953         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1954
1955         return 0;
1956 }
1957
1958 #ifdef CONFIG_PM
1959 static int ieee80211_suspend(struct wiphy *wiphy,
1960                              struct cfg80211_wowlan *wowlan)
1961 {
1962         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1963 }
1964
1965 static int ieee80211_resume(struct wiphy *wiphy)
1966 {
1967         return __ieee80211_resume(wiphy_priv(wiphy));
1968 }
1969 #else
1970 #define ieee80211_suspend NULL
1971 #define ieee80211_resume NULL
1972 #endif
1973
1974 static int ieee80211_scan(struct wiphy *wiphy,
1975                           struct cfg80211_scan_request *req)
1976 {
1977         struct ieee80211_sub_if_data *sdata;
1978
1979         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1980
1981         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1982         case NL80211_IFTYPE_STATION:
1983         case NL80211_IFTYPE_ADHOC:
1984         case NL80211_IFTYPE_MESH_POINT:
1985         case NL80211_IFTYPE_P2P_CLIENT:
1986         case NL80211_IFTYPE_P2P_DEVICE:
1987                 break;
1988         case NL80211_IFTYPE_P2P_GO:
1989                 if (sdata->local->ops->hw_scan)
1990                         break;
1991                 /*
1992                  * FIXME: implement NoA while scanning in software,
1993                  * for now fall through to allow scanning only when
1994                  * beaconing hasn't been configured yet
1995                  */
1996         case NL80211_IFTYPE_AP:
1997                 /*
1998                  * If the scan has been forced (and the driver supports
1999                  * forcing), don't care about being beaconing already.
2000                  * This will create problems to the attached stations (e.g. all
2001                  * the  frames sent while scanning on other channel will be
2002                  * lost)
2003                  */
2004                 if (sdata->u.ap.beacon &&
2005                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2006                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2007                         return -EOPNOTSUPP;
2008                 break;
2009         default:
2010                 return -EOPNOTSUPP;
2011         }
2012
2013         return ieee80211_request_scan(sdata, req);
2014 }
2015
2016 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2017 {
2018         ieee80211_scan_cancel(wiphy_priv(wiphy));
2019 }
2020
2021 static int
2022 ieee80211_sched_scan_start(struct wiphy *wiphy,
2023                            struct net_device *dev,
2024                            struct cfg80211_sched_scan_request *req)
2025 {
2026         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2027
2028         if (!sdata->local->ops->sched_scan_start)
2029                 return -EOPNOTSUPP;
2030
2031         return ieee80211_request_sched_scan_start(sdata, req);
2032 }
2033
2034 static int
2035 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2036 {
2037         struct ieee80211_local *local = wiphy_priv(wiphy);
2038
2039         if (!local->ops->sched_scan_stop)
2040                 return -EOPNOTSUPP;
2041
2042         return ieee80211_request_sched_scan_stop(local);
2043 }
2044
2045 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2046                           struct cfg80211_auth_request *req)
2047 {
2048         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2049 }
2050
2051 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2052                            struct cfg80211_assoc_request *req)
2053 {
2054         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2055 }
2056
2057 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2058                             struct cfg80211_deauth_request *req)
2059 {
2060         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2061 }
2062
2063 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2064                               struct cfg80211_disassoc_request *req)
2065 {
2066         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2067 }
2068
2069 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2070                                struct cfg80211_ibss_params *params)
2071 {
2072         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2073 }
2074
2075 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2076 {
2077         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2078 }
2079
2080 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2081                               struct ocb_setup *setup)
2082 {
2083         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2084 }
2085
2086 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2087 {
2088         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2089 }
2090
2091 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2092                                     int rate[IEEE80211_NUM_BANDS])
2093 {
2094         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2095
2096         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2097                sizeof(int) * IEEE80211_NUM_BANDS);
2098
2099         return 0;
2100 }
2101
2102 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2103 {
2104         struct ieee80211_local *local = wiphy_priv(wiphy);
2105         int err;
2106
2107         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2108                 ieee80211_check_fast_xmit_all(local);
2109
2110                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2111
2112                 if (err) {
2113                         ieee80211_check_fast_xmit_all(local);
2114                         return err;
2115                 }
2116         }
2117
2118         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2119             (changed & WIPHY_PARAM_DYN_ACK)) {
2120                 s16 coverage_class;
2121
2122                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2123                                         wiphy->coverage_class : -1;
2124                 err = drv_set_coverage_class(local, coverage_class);
2125
2126                 if (err)
2127                         return err;
2128         }
2129
2130         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2131                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2132
2133                 if (err)
2134                         return err;
2135         }
2136
2137         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2138                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2139                         return -EINVAL;
2140                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2141         }
2142         if (changed & WIPHY_PARAM_RETRY_LONG) {
2143                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2144                         return -EINVAL;
2145                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2146         }
2147         if (changed &
2148             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2149                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2150
2151         return 0;
2152 }
2153
2154 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2155                                   struct wireless_dev *wdev,
2156                                   enum nl80211_tx_power_setting type, int mbm)
2157 {
2158         struct ieee80211_local *local = wiphy_priv(wiphy);
2159         struct ieee80211_sub_if_data *sdata;
2160         enum nl80211_tx_power_setting txp_type = type;
2161         bool update_txp_type = false;
2162
2163         if (wdev) {
2164                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2165
2166                 switch (type) {
2167                 case NL80211_TX_POWER_AUTOMATIC:
2168                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2169                         txp_type = NL80211_TX_POWER_LIMITED;
2170                         break;
2171                 case NL80211_TX_POWER_LIMITED:
2172                 case NL80211_TX_POWER_FIXED:
2173                         if (mbm < 0 || (mbm % 100))
2174                                 return -EOPNOTSUPP;
2175                         sdata->user_power_level = MBM_TO_DBM(mbm);
2176                         break;
2177                 }
2178
2179                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2180                         update_txp_type = true;
2181                         sdata->vif.bss_conf.txpower_type = txp_type;
2182                 }
2183
2184                 ieee80211_recalc_txpower(sdata, update_txp_type);
2185
2186                 return 0;
2187         }
2188
2189         switch (type) {
2190         case NL80211_TX_POWER_AUTOMATIC:
2191                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2192                 txp_type = NL80211_TX_POWER_LIMITED;
2193                 break;
2194         case NL80211_TX_POWER_LIMITED:
2195         case NL80211_TX_POWER_FIXED:
2196                 if (mbm < 0 || (mbm % 100))
2197                         return -EOPNOTSUPP;
2198                 local->user_power_level = MBM_TO_DBM(mbm);
2199                 break;
2200         }
2201
2202         mutex_lock(&local->iflist_mtx);
2203         list_for_each_entry(sdata, &local->interfaces, list) {
2204                 sdata->user_power_level = local->user_power_level;
2205                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2206                         update_txp_type = true;
2207                 sdata->vif.bss_conf.txpower_type = txp_type;
2208         }
2209         list_for_each_entry(sdata, &local->interfaces, list)
2210                 ieee80211_recalc_txpower(sdata, update_txp_type);
2211         mutex_unlock(&local->iflist_mtx);
2212
2213         return 0;
2214 }
2215
2216 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2217                                   struct wireless_dev *wdev,
2218                                   int *dbm)
2219 {
2220         struct ieee80211_local *local = wiphy_priv(wiphy);
2221         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2222
2223         if (local->ops->get_txpower)
2224                 return drv_get_txpower(local, sdata, dbm);
2225
2226         if (!local->use_chanctx)
2227                 *dbm = local->hw.conf.power_level;
2228         else
2229                 *dbm = sdata->vif.bss_conf.txpower;
2230
2231         return 0;
2232 }
2233
2234 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2235                                   const u8 *addr)
2236 {
2237         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2238
2239         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2240
2241         return 0;
2242 }
2243
2244 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2245 {
2246         struct ieee80211_local *local = wiphy_priv(wiphy);
2247
2248         drv_rfkill_poll(local);
2249 }
2250
2251 #ifdef CONFIG_NL80211_TESTMODE
2252 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2253                                   struct wireless_dev *wdev,
2254                                   void *data, int len)
2255 {
2256         struct ieee80211_local *local = wiphy_priv(wiphy);
2257         struct ieee80211_vif *vif = NULL;
2258
2259         if (!local->ops->testmode_cmd)
2260                 return -EOPNOTSUPP;
2261
2262         if (wdev) {
2263                 struct ieee80211_sub_if_data *sdata;
2264
2265                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2266                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2267                         vif = &sdata->vif;
2268         }
2269
2270         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2271 }
2272
2273 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2274                                    struct sk_buff *skb,
2275                                    struct netlink_callback *cb,
2276                                    void *data, int len)
2277 {
2278         struct ieee80211_local *local = wiphy_priv(wiphy);
2279
2280         if (!local->ops->testmode_dump)
2281                 return -EOPNOTSUPP;
2282
2283         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2284 }
2285 #endif
2286
2287 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2288                                 enum ieee80211_smps_mode smps_mode)
2289 {
2290         struct sta_info *sta;
2291         enum ieee80211_smps_mode old_req;
2292
2293         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2294                 return -EINVAL;
2295
2296         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2297                 return 0;
2298
2299         old_req = sdata->u.ap.req_smps;
2300         sdata->u.ap.req_smps = smps_mode;
2301
2302         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2303         if (old_req == smps_mode ||
2304             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2305                 return 0;
2306
2307          /* If no associated stations, there's no need to do anything */
2308         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2309                 sdata->smps_mode = smps_mode;
2310                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2311                 return 0;
2312         }
2313
2314         ht_dbg(sdata,
2315                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2316                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2317
2318         mutex_lock(&sdata->local->sta_mtx);
2319         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2320                 /*
2321                  * Only stations associated to our AP and
2322                  * associated VLANs
2323                  */
2324                 if (sta->sdata->bss != &sdata->u.ap)
2325                         continue;
2326
2327                 /* This station doesn't support MIMO - skip it */
2328                 if (sta_info_tx_streams(sta) == 1)
2329                         continue;
2330
2331                 /*
2332                  * Don't wake up a STA just to send the action frame
2333                  * unless we are getting more restrictive.
2334                  */
2335                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2336                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2337                                                    smps_mode)) {
2338                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2339                                sta->sta.addr);
2340                         continue;
2341                 }
2342
2343                 /*
2344                  * If the STA is not authorized, wait until it gets
2345                  * authorized and the action frame will be sent then.
2346                  */
2347                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2348                         continue;
2349
2350                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2351                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2352                                            sdata->vif.bss_conf.bssid);
2353         }
2354         mutex_unlock(&sdata->local->sta_mtx);
2355
2356         sdata->smps_mode = smps_mode;
2357         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2358
2359         return 0;
2360 }
2361
2362 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2363                                  enum ieee80211_smps_mode smps_mode)
2364 {
2365         const u8 *ap;
2366         enum ieee80211_smps_mode old_req;
2367         int err;
2368         struct sta_info *sta;
2369         bool tdls_peer_found = false;
2370
2371         lockdep_assert_held(&sdata->wdev.mtx);
2372
2373         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2374                 return -EINVAL;
2375
2376         old_req = sdata->u.mgd.req_smps;
2377         sdata->u.mgd.req_smps = smps_mode;
2378
2379         if (old_req == smps_mode &&
2380             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2381                 return 0;
2382
2383         /*
2384          * If not associated, or current association is not an HT
2385          * association, there's no need to do anything, just store
2386          * the new value until we associate.
2387          */
2388         if (!sdata->u.mgd.associated ||
2389             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2390                 return 0;
2391
2392         ap = sdata->u.mgd.associated->bssid;
2393
2394         rcu_read_lock();
2395         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2396                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2397                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2398                         continue;
2399
2400                 tdls_peer_found = true;
2401                 break;
2402         }
2403         rcu_read_unlock();
2404
2405         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2406                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2407                         smps_mode = IEEE80211_SMPS_OFF;
2408                 else
2409                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2410         }
2411
2412         /* send SM PS frame to AP */
2413         err = ieee80211_send_smps_action(sdata, smps_mode,
2414                                          ap, ap);
2415         if (err)
2416                 sdata->u.mgd.req_smps = old_req;
2417         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2418                 ieee80211_teardown_tdls_peers(sdata);
2419
2420         return err;
2421 }
2422
2423 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2424                                     bool enabled, int timeout)
2425 {
2426         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2427         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2428
2429         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2430                 return -EOPNOTSUPP;
2431
2432         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2433                 return -EOPNOTSUPP;
2434
2435         if (enabled == sdata->u.mgd.powersave &&
2436             timeout == local->dynamic_ps_forced_timeout)
2437                 return 0;
2438
2439         sdata->u.mgd.powersave = enabled;
2440         local->dynamic_ps_forced_timeout = timeout;
2441
2442         /* no change, but if automatic follow powersave */
2443         sdata_lock(sdata);
2444         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2445         sdata_unlock(sdata);
2446
2447         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2448                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2449
2450         ieee80211_recalc_ps(local);
2451         ieee80211_recalc_ps_vif(sdata);
2452
2453         return 0;
2454 }
2455
2456 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2457                                          struct net_device *dev,
2458                                          s32 rssi_thold, u32 rssi_hyst)
2459 {
2460         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2461         struct ieee80211_vif *vif = &sdata->vif;
2462         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2463
2464         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2465             rssi_hyst == bss_conf->cqm_rssi_hyst)
2466                 return 0;
2467
2468         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2469             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2470                 return -EOPNOTSUPP;
2471
2472         bss_conf->cqm_rssi_thold = rssi_thold;
2473         bss_conf->cqm_rssi_hyst = rssi_hyst;
2474         sdata->u.mgd.last_cqm_event_signal = 0;
2475
2476         /* tell the driver upon association, unless already associated */
2477         if (sdata->u.mgd.associated &&
2478             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2479                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2480
2481         return 0;
2482 }
2483
2484 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2485                                       struct net_device *dev,
2486                                       const u8 *addr,
2487                                       const struct cfg80211_bitrate_mask *mask)
2488 {
2489         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2490         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2491         int i, ret;
2492
2493         if (!ieee80211_sdata_running(sdata))
2494                 return -ENETDOWN;
2495
2496         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2497                 ret = drv_set_bitrate_mask(local, sdata, mask);
2498                 if (ret)
2499                         return ret;
2500         }
2501
2502         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2503                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2504                 int j;
2505
2506                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2507                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2508                        sizeof(mask->control[i].ht_mcs));
2509                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2510                        mask->control[i].vht_mcs,
2511                        sizeof(mask->control[i].vht_mcs));
2512
2513                 sdata->rc_has_mcs_mask[i] = false;
2514                 sdata->rc_has_vht_mcs_mask[i] = false;
2515                 if (!sband)
2516                         continue;
2517
2518                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2519                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2520                                 sdata->rc_has_mcs_mask[i] = true;
2521                                 break;
2522                         }
2523                 }
2524
2525                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2526                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2527                                 sdata->rc_has_vht_mcs_mask[i] = true;
2528                                 break;
2529                         }
2530                 }
2531         }
2532
2533         return 0;
2534 }
2535
2536 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2537                                            struct net_device *dev,
2538                                            struct cfg80211_chan_def *chandef,
2539                                            u32 cac_time_ms)
2540 {
2541         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2542         struct ieee80211_local *local = sdata->local;
2543         int err;
2544
2545         mutex_lock(&local->mtx);
2546         if (!list_empty(&local->roc_list) || local->scanning) {
2547                 err = -EBUSY;
2548                 goto out_unlock;
2549         }
2550
2551         /* whatever, but channel contexts should not complain about that one */
2552         sdata->smps_mode = IEEE80211_SMPS_OFF;
2553         sdata->needed_rx_chains = local->rx_chains;
2554
2555         err = ieee80211_vif_use_channel(sdata, chandef,
2556                                         IEEE80211_CHANCTX_SHARED);
2557         if (err)
2558                 goto out_unlock;
2559
2560         ieee80211_queue_delayed_work(&sdata->local->hw,
2561                                      &sdata->dfs_cac_timer_work,
2562                                      msecs_to_jiffies(cac_time_ms));
2563
2564  out_unlock:
2565         mutex_unlock(&local->mtx);
2566         return err;
2567 }
2568
2569 static struct cfg80211_beacon_data *
2570 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2571 {
2572         struct cfg80211_beacon_data *new_beacon;
2573         u8 *pos;
2574         int len;
2575
2576         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2577               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2578               beacon->probe_resp_len;
2579
2580         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2581         if (!new_beacon)
2582                 return NULL;
2583
2584         pos = (u8 *)(new_beacon + 1);
2585         if (beacon->head_len) {
2586                 new_beacon->head_len = beacon->head_len;
2587                 new_beacon->head = pos;
2588                 memcpy(pos, beacon->head, beacon->head_len);
2589                 pos += beacon->head_len;
2590         }
2591         if (beacon->tail_len) {
2592                 new_beacon->tail_len = beacon->tail_len;
2593                 new_beacon->tail = pos;
2594                 memcpy(pos, beacon->tail, beacon->tail_len);
2595                 pos += beacon->tail_len;
2596         }
2597         if (beacon->beacon_ies_len) {
2598                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2599                 new_beacon->beacon_ies = pos;
2600                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2601                 pos += beacon->beacon_ies_len;
2602         }
2603         if (beacon->proberesp_ies_len) {
2604                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2605                 new_beacon->proberesp_ies = pos;
2606                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2607                 pos += beacon->proberesp_ies_len;
2608         }
2609         if (beacon->assocresp_ies_len) {
2610                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2611                 new_beacon->assocresp_ies = pos;
2612                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2613                 pos += beacon->assocresp_ies_len;
2614         }
2615         if (beacon->probe_resp_len) {
2616                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2617                 beacon->probe_resp = pos;
2618                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2619                 pos += beacon->probe_resp_len;
2620         }
2621
2622         return new_beacon;
2623 }
2624
2625 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2626 {
2627         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2628
2629         ieee80211_queue_work(&sdata->local->hw,
2630                              &sdata->csa_finalize_work);
2631 }
2632 EXPORT_SYMBOL(ieee80211_csa_finish);
2633
2634 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2635                                           u32 *changed)
2636 {
2637         int err;
2638
2639         switch (sdata->vif.type) {
2640         case NL80211_IFTYPE_AP:
2641                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2642                                               NULL);
2643                 kfree(sdata->u.ap.next_beacon);
2644                 sdata->u.ap.next_beacon = NULL;
2645
2646                 if (err < 0)
2647                         return err;
2648                 *changed |= err;
2649                 break;
2650         case NL80211_IFTYPE_ADHOC:
2651                 err = ieee80211_ibss_finish_csa(sdata);
2652                 if (err < 0)
2653                         return err;
2654                 *changed |= err;
2655                 break;
2656 #ifdef CONFIG_MAC80211_MESH
2657         case NL80211_IFTYPE_MESH_POINT:
2658                 err = ieee80211_mesh_finish_csa(sdata);
2659                 if (err < 0)
2660                         return err;
2661                 *changed |= err;
2662                 break;
2663 #endif
2664         default:
2665                 WARN_ON(1);
2666                 return -EINVAL;
2667         }
2668
2669         return 0;
2670 }
2671
2672 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2673 {
2674         struct ieee80211_local *local = sdata->local;
2675         u32 changed = 0;
2676         int err;
2677
2678         sdata_assert_lock(sdata);
2679         lockdep_assert_held(&local->mtx);
2680         lockdep_assert_held(&local->chanctx_mtx);
2681
2682         /*
2683          * using reservation isn't immediate as it may be deferred until later
2684          * with multi-vif. once reservation is complete it will re-schedule the
2685          * work with no reserved_chanctx so verify chandef to check if it
2686          * completed successfully
2687          */
2688
2689         if (sdata->reserved_chanctx) {
2690                 /*
2691                  * with multi-vif csa driver may call ieee80211_csa_finish()
2692                  * many times while waiting for other interfaces to use their
2693                  * reservations
2694                  */
2695                 if (sdata->reserved_ready)
2696                         return 0;
2697
2698                 return ieee80211_vif_use_reserved_context(sdata);
2699         }
2700
2701         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2702                                         &sdata->csa_chandef))
2703                 return -EINVAL;
2704
2705         sdata->vif.csa_active = false;
2706
2707         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2708         if (err)
2709                 return err;
2710
2711         ieee80211_bss_info_change_notify(sdata, changed);
2712
2713         if (sdata->csa_block_tx) {
2714                 ieee80211_wake_vif_queues(local, sdata,
2715                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2716                 sdata->csa_block_tx = false;
2717         }
2718
2719         err = drv_post_channel_switch(sdata);
2720         if (err)
2721                 return err;
2722
2723         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2724
2725         return 0;
2726 }
2727
2728 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2729 {
2730         if (__ieee80211_csa_finalize(sdata)) {
2731                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2732                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2733                                     GFP_KERNEL);
2734         }
2735 }
2736
2737 void ieee80211_csa_finalize_work(struct work_struct *work)
2738 {
2739         struct ieee80211_sub_if_data *sdata =
2740                 container_of(work, struct ieee80211_sub_if_data,
2741                              csa_finalize_work);
2742         struct ieee80211_local *local = sdata->local;
2743
2744         sdata_lock(sdata);
2745         mutex_lock(&local->mtx);
2746         mutex_lock(&local->chanctx_mtx);
2747
2748         /* AP might have been stopped while waiting for the lock. */
2749         if (!sdata->vif.csa_active)
2750                 goto unlock;
2751
2752         if (!ieee80211_sdata_running(sdata))
2753                 goto unlock;
2754
2755         ieee80211_csa_finalize(sdata);
2756
2757 unlock:
2758         mutex_unlock(&local->chanctx_mtx);
2759         mutex_unlock(&local->mtx);
2760         sdata_unlock(sdata);
2761 }
2762
2763 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2764                                     struct cfg80211_csa_settings *params,
2765                                     u32 *changed)
2766 {
2767         struct ieee80211_csa_settings csa = {};
2768         int err;
2769
2770         switch (sdata->vif.type) {
2771         case NL80211_IFTYPE_AP:
2772                 sdata->u.ap.next_beacon =
2773                         cfg80211_beacon_dup(&params->beacon_after);
2774                 if (!sdata->u.ap.next_beacon)
2775                         return -ENOMEM;
2776
2777                 /*
2778                  * With a count of 0, we don't have to wait for any
2779                  * TBTT before switching, so complete the CSA
2780                  * immediately.  In theory, with a count == 1 we
2781                  * should delay the switch until just before the next
2782                  * TBTT, but that would complicate things so we switch
2783                  * immediately too.  If we would delay the switch
2784                  * until the next TBTT, we would have to set the probe
2785                  * response here.
2786                  *
2787                  * TODO: A channel switch with count <= 1 without
2788                  * sending a CSA action frame is kind of useless,
2789                  * because the clients won't know we're changing
2790                  * channels.  The action frame must be implemented
2791                  * either here or in the userspace.
2792                  */
2793                 if (params->count <= 1)
2794                         break;
2795
2796                 if ((params->n_counter_offsets_beacon >
2797                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
2798                     (params->n_counter_offsets_presp >
2799                      IEEE80211_MAX_CSA_COUNTERS_NUM))
2800                         return -EINVAL;
2801
2802                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
2803                 csa.counter_offsets_presp = params->counter_offsets_presp;
2804                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
2805                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
2806                 csa.count = params->count;
2807
2808                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
2809                 if (err < 0) {
2810                         kfree(sdata->u.ap.next_beacon);
2811                         return err;
2812                 }
2813                 *changed |= err;
2814
2815                 break;
2816         case NL80211_IFTYPE_ADHOC:
2817                 if (!sdata->vif.bss_conf.ibss_joined)
2818                         return -EINVAL;
2819
2820                 if (params->chandef.width != sdata->u.ibss.chandef.width)
2821                         return -EINVAL;
2822
2823                 switch (params->chandef.width) {
2824                 case NL80211_CHAN_WIDTH_40:
2825                         if (cfg80211_get_chandef_type(&params->chandef) !=
2826                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
2827                                 return -EINVAL;
2828                 case NL80211_CHAN_WIDTH_5:
2829                 case NL80211_CHAN_WIDTH_10:
2830                 case NL80211_CHAN_WIDTH_20_NOHT:
2831                 case NL80211_CHAN_WIDTH_20:
2832                         break;
2833                 default:
2834                         return -EINVAL;
2835                 }
2836
2837                 /* changes into another band are not supported */
2838                 if (sdata->u.ibss.chandef.chan->band !=
2839                     params->chandef.chan->band)
2840                         return -EINVAL;
2841
2842                 /* see comments in the NL80211_IFTYPE_AP block */
2843                 if (params->count > 1) {
2844                         err = ieee80211_ibss_csa_beacon(sdata, params);
2845                         if (err < 0)
2846                                 return err;
2847                         *changed |= err;
2848                 }
2849
2850                 ieee80211_send_action_csa(sdata, params);
2851
2852                 break;
2853 #ifdef CONFIG_MAC80211_MESH
2854         case NL80211_IFTYPE_MESH_POINT: {
2855                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2856
2857                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
2858                         return -EINVAL;
2859
2860                 /* changes into another band are not supported */
2861                 if (sdata->vif.bss_conf.chandef.chan->band !=
2862                     params->chandef.chan->band)
2863                         return -EINVAL;
2864
2865                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
2866                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
2867                         if (!ifmsh->pre_value)
2868                                 ifmsh->pre_value = 1;
2869                         else
2870                                 ifmsh->pre_value++;
2871                 }
2872
2873                 /* see comments in the NL80211_IFTYPE_AP block */
2874                 if (params->count > 1) {
2875                         err = ieee80211_mesh_csa_beacon(sdata, params);
2876                         if (err < 0) {
2877                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
2878                                 return err;
2879                         }
2880                         *changed |= err;
2881                 }
2882
2883                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
2884                         ieee80211_send_action_csa(sdata, params);
2885
2886                 break;
2887                 }
2888 #endif
2889         default:
2890                 return -EOPNOTSUPP;
2891         }
2892
2893         return 0;
2894 }
2895
2896 static int
2897 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2898                            struct cfg80211_csa_settings *params)
2899 {
2900         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2901         struct ieee80211_local *local = sdata->local;
2902         struct ieee80211_channel_switch ch_switch;
2903         struct ieee80211_chanctx_conf *conf;
2904         struct ieee80211_chanctx *chanctx;
2905         u32 changed = 0;
2906         int err;
2907
2908         sdata_assert_lock(sdata);
2909         lockdep_assert_held(&local->mtx);
2910
2911         if (!list_empty(&local->roc_list) || local->scanning)
2912                 return -EBUSY;
2913
2914         if (sdata->wdev.cac_started)
2915                 return -EBUSY;
2916
2917         if (cfg80211_chandef_identical(&params->chandef,
2918                                        &sdata->vif.bss_conf.chandef))
2919                 return -EINVAL;
2920
2921         /* don't allow another channel switch if one is already active. */
2922         if (sdata->vif.csa_active)
2923                 return -EBUSY;
2924
2925         mutex_lock(&local->chanctx_mtx);
2926         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2927                                          lockdep_is_held(&local->chanctx_mtx));
2928         if (!conf) {
2929                 err = -EBUSY;
2930                 goto out;
2931         }
2932
2933         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
2934         if (!chanctx) {
2935                 err = -EBUSY;
2936                 goto out;
2937         }
2938
2939         ch_switch.timestamp = 0;
2940         ch_switch.device_timestamp = 0;
2941         ch_switch.block_tx = params->block_tx;
2942         ch_switch.chandef = params->chandef;
2943         ch_switch.count = params->count;
2944
2945         err = drv_pre_channel_switch(sdata, &ch_switch);
2946         if (err)
2947                 goto out;
2948
2949         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
2950                                             chanctx->mode,
2951                                             params->radar_required);
2952         if (err)
2953                 goto out;
2954
2955         /* if reservation is invalid then this will fail */
2956         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
2957         if (err) {
2958                 ieee80211_vif_unreserve_chanctx(sdata);
2959                 goto out;
2960         }
2961
2962         err = ieee80211_set_csa_beacon(sdata, params, &changed);
2963         if (err) {
2964                 ieee80211_vif_unreserve_chanctx(sdata);
2965                 goto out;
2966         }
2967
2968         sdata->csa_chandef = params->chandef;
2969         sdata->csa_block_tx = params->block_tx;
2970         sdata->vif.csa_active = true;
2971
2972         if (sdata->csa_block_tx)
2973                 ieee80211_stop_vif_queues(local, sdata,
2974                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2975
2976         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
2977                                           params->count);
2978
2979         if (changed) {
2980                 ieee80211_bss_info_change_notify(sdata, changed);
2981                 drv_channel_switch_beacon(sdata, &params->chandef);
2982         } else {
2983                 /* if the beacon didn't change, we can finalize immediately */
2984                 ieee80211_csa_finalize(sdata);
2985         }
2986
2987 out:
2988         mutex_unlock(&local->chanctx_mtx);
2989         return err;
2990 }
2991
2992 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2993                              struct cfg80211_csa_settings *params)
2994 {
2995         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2996         struct ieee80211_local *local = sdata->local;
2997         int err;
2998
2999         mutex_lock(&local->mtx);
3000         err = __ieee80211_channel_switch(wiphy, dev, params);
3001         mutex_unlock(&local->mtx);
3002
3003         return err;
3004 }
3005
3006 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3007 {
3008         lockdep_assert_held(&local->mtx);
3009
3010         local->roc_cookie_counter++;
3011
3012         /* wow, you wrapped 64 bits ... more likely a bug */
3013         if (WARN_ON(local->roc_cookie_counter == 0))
3014                 local->roc_cookie_counter++;
3015
3016         return local->roc_cookie_counter;
3017 }
3018
3019 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3020                              u64 *cookie, gfp_t gfp)
3021 {
3022         unsigned long spin_flags;
3023         struct sk_buff *ack_skb;
3024         int id;
3025
3026         ack_skb = skb_copy(skb, gfp);
3027         if (!ack_skb)
3028                 return -ENOMEM;
3029
3030         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3031         id = idr_alloc(&local->ack_status_frames, ack_skb,
3032                        1, 0x10000, GFP_ATOMIC);
3033         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3034
3035         if (id < 0) {
3036                 kfree_skb(ack_skb);
3037                 return -ENOMEM;
3038         }
3039
3040         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3041
3042         *cookie = ieee80211_mgmt_tx_cookie(local);
3043         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3044
3045         return 0;
3046 }
3047
3048 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3049                                           struct wireless_dev *wdev,
3050                                           u16 frame_type, bool reg)
3051 {
3052         struct ieee80211_local *local = wiphy_priv(wiphy);
3053         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3054
3055         switch (frame_type) {
3056         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3057                 if (reg) {
3058                         local->probe_req_reg++;
3059                         sdata->vif.probe_req_reg++;
3060                 } else {
3061                         if (local->probe_req_reg)
3062                                 local->probe_req_reg--;
3063
3064                         if (sdata->vif.probe_req_reg)
3065                                 sdata->vif.probe_req_reg--;
3066                 }
3067
3068                 if (!local->open_count)
3069                         break;
3070
3071                 if (sdata->vif.probe_req_reg == 1)
3072                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3073                                                 FIF_PROBE_REQ);
3074                 else if (sdata->vif.probe_req_reg == 0)
3075                         drv_config_iface_filter(local, sdata, 0,
3076                                                 FIF_PROBE_REQ);
3077
3078                 ieee80211_configure_filter(local);
3079                 break;
3080         default:
3081                 break;
3082         }
3083 }
3084
3085 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3086 {
3087         struct ieee80211_local *local = wiphy_priv(wiphy);
3088
3089         if (local->started)
3090                 return -EOPNOTSUPP;
3091
3092         return drv_set_antenna(local, tx_ant, rx_ant);
3093 }
3094
3095 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3096 {
3097         struct ieee80211_local *local = wiphy_priv(wiphy);
3098
3099         return drv_get_antenna(local, tx_ant, rx_ant);
3100 }
3101
3102 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3103                                     struct net_device *dev,
3104                                     struct cfg80211_gtk_rekey_data *data)
3105 {
3106         struct ieee80211_local *local = wiphy_priv(wiphy);
3107         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3108
3109         if (!local->ops->set_rekey_data)
3110                 return -EOPNOTSUPP;
3111
3112         drv_set_rekey_data(local, sdata, data);
3113
3114         return 0;
3115 }
3116
3117 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3118                                   const u8 *peer, u64 *cookie)
3119 {
3120         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3121         struct ieee80211_local *local = sdata->local;
3122         struct ieee80211_qos_hdr *nullfunc;
3123         struct sk_buff *skb;
3124         int size = sizeof(*nullfunc);
3125         __le16 fc;
3126         bool qos;
3127         struct ieee80211_tx_info *info;
3128         struct sta_info *sta;
3129         struct ieee80211_chanctx_conf *chanctx_conf;
3130         enum ieee80211_band band;
3131         int ret;
3132
3133         /* the lock is needed to assign the cookie later */
3134         mutex_lock(&local->mtx);
3135
3136         rcu_read_lock();
3137         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3138         if (WARN_ON(!chanctx_conf)) {
3139                 ret = -EINVAL;
3140                 goto unlock;
3141         }
3142         band = chanctx_conf->def.chan->band;
3143         sta = sta_info_get_bss(sdata, peer);
3144         if (sta) {
3145                 qos = sta->sta.wme;
3146         } else {
3147                 ret = -ENOLINK;
3148                 goto unlock;
3149         }
3150
3151         if (qos) {
3152                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3153                                  IEEE80211_STYPE_QOS_NULLFUNC |
3154                                  IEEE80211_FCTL_FROMDS);
3155         } else {
3156                 size -= 2;
3157                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3158                                  IEEE80211_STYPE_NULLFUNC |
3159                                  IEEE80211_FCTL_FROMDS);
3160         }
3161
3162         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3163         if (!skb) {
3164                 ret = -ENOMEM;
3165                 goto unlock;
3166         }
3167
3168         skb->dev = dev;
3169
3170         skb_reserve(skb, local->hw.extra_tx_headroom);
3171
3172         nullfunc = (void *) skb_put(skb, size);
3173         nullfunc->frame_control = fc;
3174         nullfunc->duration_id = 0;
3175         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3176         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3177         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3178         nullfunc->seq_ctrl = 0;
3179
3180         info = IEEE80211_SKB_CB(skb);
3181
3182         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3183                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3184         info->band = band;
3185
3186         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3187         skb->priority = 7;
3188         if (qos)
3189                 nullfunc->qos_ctrl = cpu_to_le16(7);
3190
3191         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3192         if (ret) {
3193                 kfree_skb(skb);
3194                 goto unlock;
3195         }
3196
3197         local_bh_disable();
3198         ieee80211_xmit(sdata, sta, skb);
3199         local_bh_enable();
3200
3201         ret = 0;
3202 unlock:
3203         rcu_read_unlock();
3204         mutex_unlock(&local->mtx);
3205
3206         return ret;
3207 }
3208
3209 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3210                                      struct wireless_dev *wdev,
3211                                      struct cfg80211_chan_def *chandef)
3212 {
3213         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3214         struct ieee80211_local *local = wiphy_priv(wiphy);
3215         struct ieee80211_chanctx_conf *chanctx_conf;
3216         int ret = -ENODATA;
3217
3218         rcu_read_lock();
3219         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3220         if (chanctx_conf) {
3221                 *chandef = sdata->vif.bss_conf.chandef;
3222                 ret = 0;
3223         } else if (local->open_count > 0 &&
3224                    local->open_count == local->monitors &&
3225                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3226                 if (local->use_chanctx)
3227                         *chandef = local->monitor_chandef;
3228                 else
3229                         *chandef = local->_oper_chandef;
3230                 ret = 0;
3231         }
3232         rcu_read_unlock();
3233
3234         return ret;
3235 }
3236
3237 #ifdef CONFIG_PM
3238 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3239 {
3240         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3241 }
3242 #endif
3243
3244 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3245                                  struct net_device *dev,
3246                                  struct cfg80211_qos_map *qos_map)
3247 {
3248         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3249         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3250
3251         if (qos_map) {
3252                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3253                 if (!new_qos_map)
3254                         return -ENOMEM;
3255                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3256         } else {
3257                 /* A NULL qos_map was passed to disable QoS mapping */
3258                 new_qos_map = NULL;
3259         }
3260
3261         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3262         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3263         if (old_qos_map)
3264                 kfree_rcu(old_qos_map, rcu_head);
3265
3266         return 0;
3267 }
3268
3269 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3270                                       struct net_device *dev,
3271                                       struct cfg80211_chan_def *chandef)
3272 {
3273         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3274         int ret;
3275         u32 changed = 0;
3276
3277         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3278         if (ret == 0)
3279                 ieee80211_bss_info_change_notify(sdata, changed);
3280
3281         return ret;
3282 }
3283
3284 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3285                                u8 tsid, const u8 *peer, u8 up,
3286                                u16 admitted_time)
3287 {
3288         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3289         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3290         int ac = ieee802_1d_to_ac[up];
3291
3292         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3293                 return -EOPNOTSUPP;
3294
3295         if (!(sdata->wmm_acm & BIT(up)))
3296                 return -EINVAL;
3297
3298         if (ifmgd->tx_tspec[ac].admitted_time)
3299                 return -EBUSY;
3300
3301         if (admitted_time) {
3302                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3303                 ifmgd->tx_tspec[ac].tsid = tsid;
3304                 ifmgd->tx_tspec[ac].up = up;
3305         }
3306
3307         return 0;
3308 }
3309
3310 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3311                                u8 tsid, const u8 *peer)
3312 {
3313         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3314         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3315         struct ieee80211_local *local = wiphy_priv(wiphy);
3316         int ac;
3317
3318         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3319                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3320
3321                 /* skip unused entries */
3322                 if (!tx_tspec->admitted_time)
3323                         continue;
3324
3325                 if (tx_tspec->tsid != tsid)
3326                         continue;
3327
3328                 /* due to this new packets will be reassigned to non-ACM ACs */
3329                 tx_tspec->up = -1;
3330
3331                 /* Make sure that all packets have been sent to avoid to
3332                  * restore the QoS params on packets that are still on the
3333                  * queues.
3334                  */
3335                 synchronize_net();
3336                 ieee80211_flush_queues(local, sdata, false);
3337
3338                 /* restore the normal QoS parameters
3339                  * (unconditionally to avoid races)
3340                  */
3341                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3342                 tx_tspec->downgraded = false;
3343                 ieee80211_sta_handle_tspec_ac_params(sdata);
3344
3345                 /* finally clear all the data */
3346                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3347
3348                 return 0;
3349         }
3350
3351         return -ENOENT;
3352 }
3353
3354 const struct cfg80211_ops mac80211_config_ops = {
3355         .add_virtual_intf = ieee80211_add_iface,
3356         .del_virtual_intf = ieee80211_del_iface,
3357         .change_virtual_intf = ieee80211_change_iface,
3358         .start_p2p_device = ieee80211_start_p2p_device,
3359         .stop_p2p_device = ieee80211_stop_p2p_device,
3360         .add_key = ieee80211_add_key,
3361         .del_key = ieee80211_del_key,
3362         .get_key = ieee80211_get_key,
3363         .set_default_key = ieee80211_config_default_key,
3364         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3365         .start_ap = ieee80211_start_ap,
3366         .change_beacon = ieee80211_change_beacon,
3367         .stop_ap = ieee80211_stop_ap,
3368         .add_station = ieee80211_add_station,
3369         .del_station = ieee80211_del_station,
3370         .change_station = ieee80211_change_station,
3371         .get_station = ieee80211_get_station,
3372         .dump_station = ieee80211_dump_station,
3373         .dump_survey = ieee80211_dump_survey,
3374 #ifdef CONFIG_MAC80211_MESH
3375         .add_mpath = ieee80211_add_mpath,
3376         .del_mpath = ieee80211_del_mpath,
3377         .change_mpath = ieee80211_change_mpath,
3378         .get_mpath = ieee80211_get_mpath,
3379         .dump_mpath = ieee80211_dump_mpath,
3380         .get_mpp = ieee80211_get_mpp,
3381         .dump_mpp = ieee80211_dump_mpp,
3382         .update_mesh_config = ieee80211_update_mesh_config,
3383         .get_mesh_config = ieee80211_get_mesh_config,
3384         .join_mesh = ieee80211_join_mesh,
3385         .leave_mesh = ieee80211_leave_mesh,
3386 #endif
3387         .join_ocb = ieee80211_join_ocb,
3388         .leave_ocb = ieee80211_leave_ocb,
3389         .change_bss = ieee80211_change_bss,
3390         .set_txq_params = ieee80211_set_txq_params,
3391         .set_monitor_channel = ieee80211_set_monitor_channel,
3392         .suspend = ieee80211_suspend,
3393         .resume = ieee80211_resume,
3394         .scan = ieee80211_scan,
3395         .abort_scan = ieee80211_abort_scan,
3396         .sched_scan_start = ieee80211_sched_scan_start,
3397         .sched_scan_stop = ieee80211_sched_scan_stop,
3398         .auth = ieee80211_auth,
3399         .assoc = ieee80211_assoc,
3400         .deauth = ieee80211_deauth,
3401         .disassoc = ieee80211_disassoc,
3402         .join_ibss = ieee80211_join_ibss,
3403         .leave_ibss = ieee80211_leave_ibss,
3404         .set_mcast_rate = ieee80211_set_mcast_rate,
3405         .set_wiphy_params = ieee80211_set_wiphy_params,
3406         .set_tx_power = ieee80211_set_tx_power,
3407         .get_tx_power = ieee80211_get_tx_power,
3408         .set_wds_peer = ieee80211_set_wds_peer,
3409         .rfkill_poll = ieee80211_rfkill_poll,
3410         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3411         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3412         .set_power_mgmt = ieee80211_set_power_mgmt,
3413         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3414         .remain_on_channel = ieee80211_remain_on_channel,
3415         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3416         .mgmt_tx = ieee80211_mgmt_tx,
3417         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3418         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3419         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3420         .set_antenna = ieee80211_set_antenna,
3421         .get_antenna = ieee80211_get_antenna,
3422         .set_rekey_data = ieee80211_set_rekey_data,
3423         .tdls_oper = ieee80211_tdls_oper,
3424         .tdls_mgmt = ieee80211_tdls_mgmt,
3425         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3426         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3427         .probe_client = ieee80211_probe_client,
3428         .set_noack_map = ieee80211_set_noack_map,
3429 #ifdef CONFIG_PM
3430         .set_wakeup = ieee80211_set_wakeup,
3431 #endif
3432         .get_channel = ieee80211_cfg_get_channel,
3433         .start_radar_detection = ieee80211_start_radar_detection,
3434         .channel_switch = ieee80211_channel_switch,
3435         .set_qos_map = ieee80211_set_qos_map,
3436         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3437         .add_tx_ts = ieee80211_add_tx_ts,
3438         .del_tx_ts = ieee80211_del_tx_ts,
3439 };