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                 iv32 = key->u.tkip.tx.iv32;
 343                 iv16 = key->u.tkip.tx.iv16;
 344
 345                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 346                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 347                         drv_get_key_seq(sdata->local, key, &kseq);
 348                         iv32 = kseq.tkip.iv32;
 349                         iv16 = kseq.tkip.iv16;
 350                 }
 351
 352                 seq[0] = iv16 & 0xff;
 353                 seq[1] = (iv16 >> 8) & 0xff;
 354                 seq[2] = iv32 & 0xff;
 355                 seq[3] = (iv32 >> 8) & 0xff;
 356                 seq[4] = (iv32 >> 16) & 0xff;
 357                 seq[5] = (iv32 >> 24) & 0xff;
 358                 params.seq = seq;
 359                 params.seq_len = 6;
 360                 break;
 361         case WLAN_CIPHER_SUITE_CCMP:
 362         case WLAN_CIPHER_SUITE_CCMP_256:
 363         case WLAN_CIPHER_SUITE_AES_CMAC:
 364         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 365                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 366                              offsetof(typeof(kseq), aes_cmac));
 367         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 368         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 369                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 370                              offsetof(typeof(kseq), aes_gmac));
 371         case WLAN_CIPHER_SUITE_GCMP:
 372         case WLAN_CIPHER_SUITE_GCMP_256:
 373                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 374                              offsetof(typeof(kseq), gcmp));
 375
 376                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 377                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 378                         drv_get_key_seq(sdata->local, key, &kseq);
 379                         memcpy(seq, kseq.ccmp.pn, 6);
 380                 } else {
 381                         pn64 = atomic64_read(&key->conf.tx_pn);
 382                         seq[0] = pn64;
 383                         seq[1] = pn64 >> 8;
 384                         seq[2] = pn64 >> 16;
 385                         seq[3] = pn64 >> 24;
 386                         seq[4] = pn64 >> 32;
 387                         seq[5] = pn64 >> 40;
 388                 }
 389                 params.seq = seq;
 390                 params.seq_len = 6;
 391                 break;
 392         default:
 393                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 394                         break;
 395                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 396                         break;
 397                 drv_get_key_seq(sdata->local, key, &kseq);
 398                 params.seq = kseq.hw.seq;
 399                 params.seq_len = kseq.hw.seq_len;
 400                 break;
 401         }
 402
 403         params.key = key->conf.key;
 404         params.key_len = key->conf.keylen;
 405
 406         callback(cookie, &params);
 407         err = 0;
 408
 409  out:
 410         rcu_read_unlock();
 411         return err;
 412 }
 413
 414 static int ieee80211_config_default_key(struct wiphy *wiphy,
 415                                         struct net_device *dev,
 416                                         u8 key_idx, bool uni,
 417                                         bool multi)
 418 {
 419         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 420
 421         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 422
 423         return 0;
 424 }
 425
 426 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 427                                              struct net_device *dev,
 428                                              u8 key_idx)
 429 {
 430         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 431
 432         ieee80211_set_default_mgmt_key(sdata, key_idx);
 433
 434         return 0;
 435 }
 436
 437 void sta_set_rate_info_tx(struct sta_info *sta,
 438                           const struct ieee80211_tx_rate *rate,
 439                           struct rate_info *rinfo)
 440 {
 441         rinfo->flags = 0;
 442         if (rate->flags & IEEE80211_TX_RC_MCS) {
 443                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 444                 rinfo->mcs = rate->idx;
 445         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 446                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 447                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 448                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 449         } else {
 450                 struct ieee80211_supported_band *sband;
 451                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 452                 u16 brate;
 453
 454                 sband = sta->local->hw.wiphy->bands[
 455                                 ieee80211_get_sdata_band(sta->sdata)];
 456                 brate = sband->bitrates[rate->idx].bitrate;
 457                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 458         }
 459         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 460                 rinfo->bw = RATE_INFO_BW_40;
 461         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 462                 rinfo->bw = RATE_INFO_BW_80;
 463         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 464                 rinfo->bw = RATE_INFO_BW_160;
 465         else
 466                 rinfo->bw = RATE_INFO_BW_20;
 467         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 468                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 469 }
 470
 471 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 472                                   int idx, u8 *mac, struct station_info *sinfo)
 473 {
 474         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 475         struct ieee80211_local *local = sdata->local;
 476         struct sta_info *sta;
 477         int ret = -ENOENT;
 478
 479         mutex_lock(&local->sta_mtx);
 480
 481         sta = sta_info_get_by_idx(sdata, idx);
 482         if (sta) {
 483                 ret = 0;
 484                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 485                 sta_set_sinfo(sta, sinfo);
 486         }
 487
 488         mutex_unlock(&local->sta_mtx);
 489
 490         return ret;
 491 }
 492
 493 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 494                                  int idx, struct survey_info *survey)
 495 {
 496         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 497
 498         return drv_get_survey(local, idx, survey);
 499 }
 500
 501 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 502                                  const u8 *mac, struct station_info *sinfo)
 503 {
 504         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 505         struct ieee80211_local *local = sdata->local;
 506         struct sta_info *sta;
 507         int ret = -ENOENT;
 508
 509         mutex_lock(&local->sta_mtx);
 510
 511         sta = sta_info_get_bss(sdata, mac);
 512         if (sta) {
 513                 ret = 0;
 514                 sta_set_sinfo(sta, sinfo);
 515         }
 516
 517         mutex_unlock(&local->sta_mtx);
 518
 519         return ret;
 520 }
 521
 522 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 523                                          struct cfg80211_chan_def *chandef)
 524 {
 525         struct ieee80211_local *local = wiphy_priv(wiphy);
 526         struct ieee80211_sub_if_data *sdata;
 527         int ret = 0;
 528
 529         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 530                 return 0;
 531
 532         mutex_lock(&local->mtx);
 533         mutex_lock(&local->iflist_mtx);
 534         if (local->use_chanctx) {
 535                 sdata = rcu_dereference_protected(
 536                                 local->monitor_sdata,
 537                                 lockdep_is_held(&local->iflist_mtx));
 538                 if (sdata) {
 539                         ieee80211_vif_release_channel(sdata);
 540                         ret = ieee80211_vif_use_channel(sdata, chandef,
 541                                         IEEE80211_CHANCTX_EXCLUSIVE);
 542                 }
 543         } else if (local->open_count == local->monitors) {
 544                 local->_oper_chandef = *chandef;
 545                 ieee80211_hw_config(local, 0);
 546         }
 547
 548         if (ret == 0)
 549                 local->monitor_chandef = *chandef;
 550         mutex_unlock(&local->iflist_mtx);
 551         mutex_unlock(&local->mtx);
 552
 553         return ret;
 554 }
 555
 556 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 557                                     const u8 *resp, size_t resp_len,
 558                                     const struct ieee80211_csa_settings *csa)
 559 {
 560         struct probe_resp *new, *old;
 561
 562         if (!resp || !resp_len)
 563                 return 1;
 564
 565         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 566
 567         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 568         if (!new)
 569                 return -ENOMEM;
 570
 571         new->len = resp_len;
 572         memcpy(new->data, resp, resp_len);
 573
 574         if (csa)
 575                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 576                        csa->n_counter_offsets_presp *
 577                        sizeof(new->csa_counter_offsets[0]));
 578
 579         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 580         if (old)
 581                 kfree_rcu(old, rcu_head);
 582
 583         return 0;
 584 }
 585
 586 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 587                                    struct cfg80211_beacon_data *params,
 588                                    const struct ieee80211_csa_settings *csa)
 589 {
 590         struct beacon_data *new, *old;
 591         int new_head_len, new_tail_len;
 592         int size, err;
 593         u32 changed = BSS_CHANGED_BEACON;
 594
 595         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 596
 597
 598         /* Need to have a beacon head if we don't have one yet */
 599         if (!params->head && !old)
 600                 return -EINVAL;
 601
 602         /* new or old head? */
 603         if (params->head)
 604                 new_head_len = params->head_len;
 605         else
 606                 new_head_len = old->head_len;
 607
 608         /* new or old tail? */
 609         if (params->tail || !old)
 610                 /* params->tail_len will be zero for !params->tail */
 611                 new_tail_len = params->tail_len;
 612         else
 613                 new_tail_len = old->tail_len;
 614
 615         size = sizeof(*new) + new_head_len + new_tail_len;
 616
 617         new = kzalloc(size, GFP_KERNEL);
 618         if (!new)
 619                 return -ENOMEM;
 620
 621         /* start filling the new info now */
 622
 623         /*
 624          * pointers go into the block we allocated,
 625          * memory is | beacon_data | head | tail |
 626          */
 627         new->head = ((u8 *) new) + sizeof(*new);
 628         new->tail = new->head + new_head_len;
 629         new->head_len = new_head_len;
 630         new->tail_len = new_tail_len;
 631
 632         if (csa) {
 633                 new->csa_current_counter = csa->count;
 634                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 635                        csa->n_counter_offsets_beacon *
 636                        sizeof(new->csa_counter_offsets[0]));
 637         }
 638
 639         /* copy in head */
 640         if (params->head)
 641                 memcpy(new->head, params->head, new_head_len);
 642         else
 643                 memcpy(new->head, old->head, new_head_len);
 644
 645         /* copy in optional tail */
 646         if (params->tail)
 647                 memcpy(new->tail, params->tail, new_tail_len);
 648         else
 649                 if (old)
 650                         memcpy(new->tail, old->tail, new_tail_len);
 651
 652         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 653                                        params->probe_resp_len, csa);
 654         if (err < 0)
 655                 return err;
 656         if (err == 0)
 657                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 658
 659         rcu_assign_pointer(sdata->u.ap.beacon, new);
 660
 661         if (old)
 662                 kfree_rcu(old, rcu_head);
 663
 664         return changed;
 665 }
 666
 667 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 668                               struct cfg80211_ap_settings *params)
 669 {
 670         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 671         struct ieee80211_local *local = sdata->local;
 672         struct beacon_data *old;
 673         struct ieee80211_sub_if_data *vlan;
 674         u32 changed = BSS_CHANGED_BEACON_INT |
 675                       BSS_CHANGED_BEACON_ENABLED |
 676                       BSS_CHANGED_BEACON |
 677                       BSS_CHANGED_SSID |
 678                       BSS_CHANGED_P2P_PS |
 679                       BSS_CHANGED_TXPOWER;
 680         int err;
 681
 682         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 683         if (old)
 684                 return -EALREADY;
 685
 686         switch (params->smps_mode) {
 687         case NL80211_SMPS_OFF:
 688                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 689                 break;
 690         case NL80211_SMPS_STATIC:
 691                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 692                 break;
 693         case NL80211_SMPS_DYNAMIC:
 694                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 695                 break;
 696         default:
 697                 return -EINVAL;
 698         }
 699         sdata->needed_rx_chains = sdata->local->rx_chains;
 700
 701         mutex_lock(&local->mtx);
 702         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 703                                         IEEE80211_CHANCTX_SHARED);
 704         if (!err)
 705                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 706         mutex_unlock(&local->mtx);
 707         if (err)
 708                 return err;
 709
 710         /*
 711          * Apply control port protocol, this allows us to
 712          * not encrypt dynamic WEP control frames.
 713          */
 714         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 715         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 716         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 717                                                         &params->crypto,
 718                                                         sdata->vif.type);
 719
 720         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 721                 vlan->control_port_protocol =
 722                         params->crypto.control_port_ethertype;
 723                 vlan->control_port_no_encrypt =
 724                         params->crypto.control_port_no_encrypt;
 725                 vlan->encrypt_headroom =
 726                         ieee80211_cs_headroom(sdata->local,
 727                                               &params->crypto,
 728                                               vlan->vif.type);
 729         }
 730
 731         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 732         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 733         sdata->vif.bss_conf.enable_beacon = true;
 734
 735         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 736         if (params->ssid_len)
 737                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 738                        params->ssid_len);
 739         sdata->vif.bss_conf.hidden_ssid =
 740                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 741
 742         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 743                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 744         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 745                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 746         if (params->p2p_opp_ps)
 747                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 748                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 749
 750         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 751         if (err < 0) {
 752                 ieee80211_vif_release_channel(sdata);
 753                 return err;
 754         }
 755         changed |= err;
 756
 757         err = drv_start_ap(sdata->local, sdata);
 758         if (err) {
 759                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 760
 761                 if (old)
 762                         kfree_rcu(old, rcu_head);
 763                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 764                 ieee80211_vif_release_channel(sdata);
 765                 return err;
 766         }
 767
 768         ieee80211_recalc_dtim(local, sdata);
 769         ieee80211_bss_info_change_notify(sdata, changed);
 770
 771         netif_carrier_on(dev);
 772         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 773                 netif_carrier_on(vlan->dev);
 774
 775         return 0;
 776 }
 777
 778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 779                                    struct cfg80211_beacon_data *params)
 780 {
 781         struct ieee80211_sub_if_data *sdata;
 782         struct beacon_data *old;
 783         int err;
 784
 785         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 786         sdata_assert_lock(sdata);
 787
 788         /* don't allow changing the beacon while CSA is in place - offset
 789          * of channel switch counter may change
 790          */
 791         if (sdata->vif.csa_active)
 792                 return -EBUSY;
 793
 794         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 795         if (!old)
 796                 return -ENOENT;
 797
 798         err = ieee80211_assign_beacon(sdata, params, NULL);
 799         if (err < 0)
 800                 return err;
 801         ieee80211_bss_info_change_notify(sdata, err);
 802         return 0;
 803 }
 804
 805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 806 {
 807         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 808         struct ieee80211_sub_if_data *vlan;
 809         struct ieee80211_local *local = sdata->local;
 810         struct beacon_data *old_beacon;
 811         struct probe_resp *old_probe_resp;
 812         struct cfg80211_chan_def chandef;
 813
 814         sdata_assert_lock(sdata);
 815
 816         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 817         if (!old_beacon)
 818                 return -ENOENT;
 819         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 820
 821         /* abort any running channel switch */
 822         mutex_lock(&local->mtx);
 823         sdata->vif.csa_active = false;
 824         if (sdata->csa_block_tx) {
 825                 ieee80211_wake_vif_queues(local, sdata,
 826                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 827                 sdata->csa_block_tx = false;
 828         }
 829
 830         mutex_unlock(&local->mtx);
 831
 832         kfree(sdata->u.ap.next_beacon);
 833         sdata->u.ap.next_beacon = NULL;
 834
 835         /* turn off carrier for this interface and dependent VLANs */
 836         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 837                 netif_carrier_off(vlan->dev);
 838         netif_carrier_off(dev);
 839
 840         /* remove beacon and probe response */
 841         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 842         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 843         kfree_rcu(old_beacon, rcu_head);
 844         if (old_probe_resp)
 845                 kfree_rcu(old_probe_resp, rcu_head);
 846         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 847
 848         __sta_info_flush(sdata, true);
 849         ieee80211_free_keys(sdata, true);
 850
 851         sdata->vif.bss_conf.enable_beacon = false;
 852         sdata->vif.bss_conf.ssid_len = 0;
 853         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 854         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 855
 856         if (sdata->wdev.cac_started) {
 857                 chandef = sdata->vif.bss_conf.chandef;
 858                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 859                 cfg80211_cac_event(sdata->dev, &chandef,
 860                                    NL80211_RADAR_CAC_ABORTED,
 861                                    GFP_KERNEL);
 862         }
 863
 864         drv_stop_ap(sdata->local, sdata);
 865
 866         /* free all potentially still buffered bcast frames */
 867         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 868         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 869
 870         mutex_lock(&local->mtx);
 871         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 872         ieee80211_vif_release_channel(sdata);
 873         mutex_unlock(&local->mtx);
 874
 875         return 0;
 876 }
 877
 878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 879 struct iapp_layer2_update {
 880         u8 da[ETH_ALEN];        /* broadcast */
 881         u8 sa[ETH_ALEN];        /* STA addr */
 882         __be16 len;             /* 6 */
 883         u8 dsap;                /* 0 */
 884         u8 ssap;                /* 0 */
 885         u8 control;
 886         u8 xid_info[3];
 887 } __packed;
 888
 889 static void ieee80211_send_layer2_update(struct sta_info *sta)
 890 {
 891         struct iapp_layer2_update *msg;
 892         struct sk_buff *skb;
 893
 894         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 895          * bridge devices */
 896
 897         skb = dev_alloc_skb(sizeof(*msg));
 898         if (!skb)
 899                 return;
 900         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 901
 902         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 903          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 904
 905         eth_broadcast_addr(msg->da);
 906         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 907         msg->len = htons(6);
 908         msg->dsap = 0;
 909         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 910         msg->control = 0xaf;    /* XID response lsb.1111F101.
 911                                  * F=0 (no poll command; unsolicited frame) */
 912         msg->xid_info[0] = 0x81;        /* XID format identifier */
 913         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 914         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 915
 916         skb->dev = sta->sdata->dev;
 917         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 918         memset(skb->cb, 0, sizeof(skb->cb));
 919         netif_rx_ni(skb);
 920 }
 921
 922 static int sta_apply_auth_flags(struct ieee80211_local *local,
 923                                 struct sta_info *sta,
 924                                 u32 mask, u32 set)
 925 {
 926         int ret;
 927
 928         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 929             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 930             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 931                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 932                 if (ret)
 933                         return ret;
 934         }
 935
 936         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 937             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 938             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 939                 /*
 940                  * When peer becomes associated, init rate control as
 941                  * well. Some drivers require rate control initialized
 942                  * before drv_sta_state() is called.
 943                  */
 944                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
 945                         rate_control_rate_init(sta);
 946
 947                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 948                 if (ret)
 949                         return ret;
 950         }
 951
 952         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 953                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 954                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 955                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 956                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 957                 else
 958                         ret = 0;
 959                 if (ret)
 960                         return ret;
 961         }
 962
 963         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 964             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
 965             test_sta_flag(sta, WLAN_STA_ASSOC)) {
 966                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 967                 if (ret)
 968                         return ret;
 969         }
 970
 971         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 972             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 973             test_sta_flag(sta, WLAN_STA_AUTH)) {
 974                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 975                 if (ret)
 976                         return ret;
 977         }
 978
 979         return 0;
 980 }
 981
 982 static void sta_apply_mesh_params(struct ieee80211_local *local,
 983                                   struct sta_info *sta,
 984                                   struct station_parameters *params)
 985 {
 986 #ifdef CONFIG_MAC80211_MESH
 987         struct ieee80211_sub_if_data *sdata = sta->sdata;
 988         u32 changed = 0;
 989
 990         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
 991                 switch (params->plink_state) {
 992                 case NL80211_PLINK_ESTAB:
 993                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
 994                                 changed = mesh_plink_inc_estab_count(sdata);
 995                         sta->mesh->plink_state = params->plink_state;
 996
 997                         ieee80211_mps_sta_status_update(sta);
 998                         changed |= ieee80211_mps_set_sta_local_pm(sta,
 999                                       sdata->u.mesh.mshcfg.power_mode);
1000                         break;
1001                 case NL80211_PLINK_LISTEN:
1002                 case NL80211_PLINK_BLOCKED:
1003                 case NL80211_PLINK_OPN_SNT:
1004                 case NL80211_PLINK_OPN_RCVD:
1005                 case NL80211_PLINK_CNF_RCVD:
1006                 case NL80211_PLINK_HOLDING:
1007                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1008                                 changed = mesh_plink_dec_estab_count(sdata);
1009                         sta->mesh->plink_state = params->plink_state;
1010
1011                         ieee80211_mps_sta_status_update(sta);
1012                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1013                                         NL80211_MESH_POWER_UNKNOWN);
1014                         break;
1015                 default:
1016                         /*  nothing  */
1017                         break;
1018                 }
1019         }
1020
1021         switch (params->plink_action) {
1022         case NL80211_PLINK_ACTION_NO_ACTION:
1023                 /* nothing */
1024                 break;
1025         case NL80211_PLINK_ACTION_OPEN:
1026                 changed |= mesh_plink_open(sta);
1027                 break;
1028         case NL80211_PLINK_ACTION_BLOCK:
1029                 changed |= mesh_plink_block(sta);
1030                 break;
1031         }
1032
1033         if (params->local_pm)
1034                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1035                                                           params->local_pm);
1036
1037         ieee80211_mbss_info_change_notify(sdata, changed);
1038 #endif
1039 }
1040
1041 static int sta_apply_parameters(struct ieee80211_local *local,
1042                                 struct sta_info *sta,
1043                                 struct station_parameters *params)
1044 {
1045         int ret = 0;
1046         struct ieee80211_supported_band *sband;
1047         struct ieee80211_sub_if_data *sdata = sta->sdata;
1048         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1049         u32 mask, set;
1050
1051         sband = local->hw.wiphy->bands[band];
1052
1053         mask = params->sta_flags_mask;
1054         set = params->sta_flags_set;
1055
1056         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1057                 /*
1058                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1059                  * API but must follow AUTHENTICATED for driver state.
1060                  */
1061                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1062                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1063                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1064                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1065         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1066                 /*
1067                  * TDLS -- everything follows authorized, but
1068                  * only becoming authorized is possible, not
1069                  * going back
1070                  */
1071                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1072                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1073                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1074                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1075                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1076                 }
1077         }
1078
1079         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1080             local->hw.queues >= IEEE80211_NUM_ACS)
1081                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1082
1083         /* auth flags will be set later for TDLS,
1084          * and for unassociated stations that move to assocaited */
1085         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1086             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1087               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1088                 ret = sta_apply_auth_flags(local, sta, mask, set);
1089                 if (ret)
1090                         return ret;
1091         }
1092
1093         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1094                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1095                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1096                 else
1097                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1098         }
1099
1100         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1101                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1102                 if (set & BIT(NL80211_STA_FLAG_MFP))
1103                         set_sta_flag(sta, WLAN_STA_MFP);
1104                 else
1105                         clear_sta_flag(sta, WLAN_STA_MFP);
1106         }
1107
1108         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1109                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1110                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1111                 else
1112                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1113         }
1114
1115         /* mark TDLS channel switch support, if the AP allows it */
1116         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1117             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1118             params->ext_capab_len >= 4 &&
1119             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1120                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1121
1122         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1123             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1124             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1125             params->ext_capab_len >= 8 &&
1126             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1127                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1128
1129         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1130                 sta->sta.uapsd_queues = params->uapsd_queues;
1131                 sta->sta.max_sp = params->max_sp;
1132         }
1133
1134         /*
1135          * cfg80211 validates this (1-2007) and allows setting the AID
1136          * only when creating a new station entry
1137          */
1138         if (params->aid)
1139                 sta->sta.aid = params->aid;
1140
1141         /*
1142          * Some of the following updates would be racy if called on an
1143          * existing station, via ieee80211_change_station(). However,
1144          * all such changes are rejected by cfg80211 except for updates
1145          * changing the supported rates on an existing but not yet used
1146          * TDLS peer.
1147          */
1148
1149         if (params->listen_interval >= 0)
1150                 sta->listen_interval = params->listen_interval;
1151
1152         if (params->supported_rates) {
1153                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1154                                          sband, params->supported_rates,
1155                                          params->supported_rates_len,
1156                                          &sta->sta.supp_rates[band]);
1157         }
1158
1159         if (params->ht_capa)
1160                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1161                                                   params->ht_capa, sta);
1162
1163         if (params->vht_capa)
1164                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1165                                                     params->vht_capa, sta);
1166
1167         if (params->opmode_notif_used) {
1168                 /* returned value is only needed for rc update, but the
1169                  * rc isn't initialized here yet, so ignore it
1170                  */
1171                 __ieee80211_vht_handle_opmode(sdata, sta,
1172                                               params->opmode_notif,
1173                                               band, false);
1174         }
1175
1176         if (ieee80211_vif_is_mesh(&sdata->vif))
1177                 sta_apply_mesh_params(local, sta, params);
1178
1179         /* set the STA state after all sta info from usermode has been set */
1180         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1181             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1182                 ret = sta_apply_auth_flags(local, sta, mask, set);
1183                 if (ret)
1184                         return ret;
1185         }
1186
1187         return 0;
1188 }
1189
1190 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1191                                  const u8 *mac,
1192                                  struct station_parameters *params)
1193 {
1194         struct ieee80211_local *local = wiphy_priv(wiphy);
1195         struct sta_info *sta;
1196         struct ieee80211_sub_if_data *sdata;
1197         int err;
1198         int layer2_update;
1199
1200         if (params->vlan) {
1201                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1202
1203                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1204                     sdata->vif.type != NL80211_IFTYPE_AP)
1205                         return -EINVAL;
1206         } else
1207                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1208
1209         if (ether_addr_equal(mac, sdata->vif.addr))
1210                 return -EINVAL;
1211
1212         if (is_multicast_ether_addr(mac))
1213                 return -EINVAL;
1214
1215         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1216         if (!sta)
1217                 return -ENOMEM;
1218
1219         /*
1220          * defaults -- if userspace wants something else we'll
1221          * change it accordingly in sta_apply_parameters()
1222          */
1223         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
1224             !(params->sta_flags_set & (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1225                                         BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1226                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1227                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1228         }
1229         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1230                 sta->sta.tdls = true;
1231
1232         err = sta_apply_parameters(local, sta, params);
1233         if (err) {
1234                 sta_info_free(local, sta);
1235                 return err;
1236         }
1237
1238         /*
1239          * for TDLS and for unassociated station, rate control should be
1240          * initialized only when rates are known and station is marked
1241          * authorized/associated
1242          */
1243         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1244             test_sta_flag(sta, WLAN_STA_ASSOC))
1245                 rate_control_rate_init(sta);
1246
1247         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1248                 sdata->vif.type == NL80211_IFTYPE_AP;
1249
1250         err = sta_info_insert_rcu(sta);
1251         if (err) {
1252                 rcu_read_unlock();
1253                 return err;
1254         }
1255
1256         if (layer2_update)
1257                 ieee80211_send_layer2_update(sta);
1258
1259         rcu_read_unlock();
1260
1261         return 0;
1262 }
1263
1264 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1265                                  struct station_del_parameters *params)
1266 {
1267         struct ieee80211_sub_if_data *sdata;
1268
1269         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1270
1271         if (params->mac)
1272                 return sta_info_destroy_addr_bss(sdata, params->mac);
1273
1274         sta_info_flush(sdata);
1275         return 0;
1276 }
1277
1278 static int ieee80211_change_station(struct wiphy *wiphy,
1279                                     struct net_device *dev, const u8 *mac,
1280                                     struct station_parameters *params)
1281 {
1282         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1283         struct ieee80211_local *local = wiphy_priv(wiphy);
1284         struct sta_info *sta;
1285         struct ieee80211_sub_if_data *vlansdata;
1286         enum cfg80211_station_type statype;
1287         int err;
1288
1289         mutex_lock(&local->sta_mtx);
1290
1291         sta = sta_info_get_bss(sdata, mac);
1292         if (!sta) {
1293                 err = -ENOENT;
1294                 goto out_err;
1295         }
1296
1297         switch (sdata->vif.type) {
1298         case NL80211_IFTYPE_MESH_POINT:
1299                 if (sdata->u.mesh.user_mpm)
1300                         statype = CFG80211_STA_MESH_PEER_USER;
1301                 else
1302                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1303                 break;
1304         case NL80211_IFTYPE_ADHOC:
1305                 statype = CFG80211_STA_IBSS;
1306                 break;
1307         case NL80211_IFTYPE_STATION:
1308                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1309                         statype = CFG80211_STA_AP_STA;
1310                         break;
1311                 }
1312                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1313                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1314                 else
1315                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1316                 break;
1317         case NL80211_IFTYPE_AP:
1318         case NL80211_IFTYPE_AP_VLAN:
1319                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1320                         statype = CFG80211_STA_AP_CLIENT;
1321                 else
1322                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1323                 break;
1324         default:
1325                 err = -EOPNOTSUPP;
1326                 goto out_err;
1327         }
1328
1329         err = cfg80211_check_station_change(wiphy, params, statype);
1330         if (err)
1331                 goto out_err;
1332
1333         if (params->vlan && params->vlan != sta->sdata->dev) {
1334                 bool prev_4addr = false;
1335                 bool new_4addr = false;
1336
1337                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1338
1339                 if (params->vlan->ieee80211_ptr->use_4addr) {
1340                         if (vlansdata->u.vlan.sta) {
1341                                 err = -EBUSY;
1342                                 goto out_err;
1343                         }
1344
1345                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1346                         new_4addr = true;
1347                 }
1348
1349                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1350                     sta->sdata->u.vlan.sta) {
1351                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1352                         prev_4addr = true;
1353                 }
1354
1355                 sta->sdata = vlansdata;
1356                 ieee80211_check_fast_xmit(sta);
1357
1358                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1359                     prev_4addr != new_4addr) {
1360                         if (new_4addr)
1361                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1362                         else
1363                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1364                 }
1365
1366                 ieee80211_send_layer2_update(sta);
1367         }
1368
1369         err = sta_apply_parameters(local, sta, params);
1370         if (err)
1371                 goto out_err;
1372
1373         mutex_unlock(&local->sta_mtx);
1374
1375         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1376              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1377             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1378             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1379             sta_info_tx_streams(sta) != 1) {
1380                 ht_dbg(sta->sdata,
1381                        "%pM just authorized and MIMO capable - update SMPS\n",
1382                        sta->sta.addr);
1383                 ieee80211_send_smps_action(sta->sdata,
1384                         sta->sdata->bss->req_smps,
1385                         sta->sta.addr,
1386                         sta->sdata->vif.bss_conf.bssid);
1387         }
1388
1389         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1390             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1391                 ieee80211_recalc_ps(local);
1392                 ieee80211_recalc_ps_vif(sdata);
1393         }
1394
1395         return 0;
1396 out_err:
1397         mutex_unlock(&local->sta_mtx);
1398         return err;
1399 }
1400
1401 #ifdef CONFIG_MAC80211_MESH
1402 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1403                                const u8 *dst, const u8 *next_hop)
1404 {
1405         struct ieee80211_sub_if_data *sdata;
1406         struct mesh_path *mpath;
1407         struct sta_info *sta;
1408
1409         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1410
1411         rcu_read_lock();
1412         sta = sta_info_get(sdata, next_hop);
1413         if (!sta) {
1414                 rcu_read_unlock();
1415                 return -ENOENT;
1416         }
1417
1418         mpath = mesh_path_add(sdata, dst);
1419         if (IS_ERR(mpath)) {
1420                 rcu_read_unlock();
1421                 return PTR_ERR(mpath);
1422         }
1423
1424         mesh_path_fix_nexthop(mpath, sta);
1425
1426         rcu_read_unlock();
1427         return 0;
1428 }
1429
1430 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1431                                const u8 *dst)
1432 {
1433         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1434
1435         if (dst)
1436                 return mesh_path_del(sdata, dst);
1437
1438         mesh_path_flush_by_iface(sdata);
1439         return 0;
1440 }
1441
1442 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1443                                   const u8 *dst, const u8 *next_hop)
1444 {
1445         struct ieee80211_sub_if_data *sdata;
1446         struct mesh_path *mpath;
1447         struct sta_info *sta;
1448
1449         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1450
1451         rcu_read_lock();
1452
1453         sta = sta_info_get(sdata, next_hop);
1454         if (!sta) {
1455                 rcu_read_unlock();
1456                 return -ENOENT;
1457         }
1458
1459         mpath = mesh_path_lookup(sdata, dst);
1460         if (!mpath) {
1461                 rcu_read_unlock();
1462                 return -ENOENT;
1463         }
1464
1465         mesh_path_fix_nexthop(mpath, sta);
1466
1467         rcu_read_unlock();
1468         return 0;
1469 }
1470
1471 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1472                             struct mpath_info *pinfo)
1473 {
1474         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1475
1476         if (next_hop_sta)
1477                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1478         else
1479                 eth_zero_addr(next_hop);
1480
1481         memset(pinfo, 0, sizeof(*pinfo));
1482
1483         pinfo->generation = mesh_paths_generation;
1484
1485         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1486                         MPATH_INFO_SN |
1487                         MPATH_INFO_METRIC |
1488                         MPATH_INFO_EXPTIME |
1489                         MPATH_INFO_DISCOVERY_TIMEOUT |
1490                         MPATH_INFO_DISCOVERY_RETRIES |
1491                         MPATH_INFO_FLAGS;
1492
1493         pinfo->frame_qlen = mpath->frame_queue.qlen;
1494         pinfo->sn = mpath->sn;
1495         pinfo->metric = mpath->metric;
1496         if (time_before(jiffies, mpath->exp_time))
1497                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1498         pinfo->discovery_timeout =
1499                         jiffies_to_msecs(mpath->discovery_timeout);
1500         pinfo->discovery_retries = mpath->discovery_retries;
1501         if (mpath->flags & MESH_PATH_ACTIVE)
1502                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1503         if (mpath->flags & MESH_PATH_RESOLVING)
1504                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1505         if (mpath->flags & MESH_PATH_SN_VALID)
1506                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1507         if (mpath->flags & MESH_PATH_FIXED)
1508                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1509         if (mpath->flags & MESH_PATH_RESOLVED)
1510                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1511 }
1512
1513 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1514                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1515
1516 {
1517         struct ieee80211_sub_if_data *sdata;
1518         struct mesh_path *mpath;
1519
1520         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1521
1522         rcu_read_lock();
1523         mpath = mesh_path_lookup(sdata, dst);
1524         if (!mpath) {
1525                 rcu_read_unlock();
1526                 return -ENOENT;
1527         }
1528         memcpy(dst, mpath->dst, ETH_ALEN);
1529         mpath_set_pinfo(mpath, next_hop, pinfo);
1530         rcu_read_unlock();
1531         return 0;
1532 }
1533
1534 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1535                                 int idx, u8 *dst, u8 *next_hop,
1536                                 struct mpath_info *pinfo)
1537 {
1538         struct ieee80211_sub_if_data *sdata;
1539         struct mesh_path *mpath;
1540
1541         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1542
1543         rcu_read_lock();
1544         mpath = mesh_path_lookup_by_idx(sdata, idx);
1545         if (!mpath) {
1546                 rcu_read_unlock();
1547                 return -ENOENT;
1548         }
1549         memcpy(dst, mpath->dst, ETH_ALEN);
1550         mpath_set_pinfo(mpath, next_hop, pinfo);
1551         rcu_read_unlock();
1552         return 0;
1553 }
1554
1555 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1556                           struct mpath_info *pinfo)
1557 {
1558         memset(pinfo, 0, sizeof(*pinfo));
1559         memcpy(mpp, mpath->mpp, ETH_ALEN);
1560
1561         pinfo->generation = mpp_paths_generation;
1562 }
1563
1564 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1565                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1566
1567 {
1568         struct ieee80211_sub_if_data *sdata;
1569         struct mesh_path *mpath;
1570
1571         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1572
1573         rcu_read_lock();
1574         mpath = mpp_path_lookup(sdata, dst);
1575         if (!mpath) {
1576                 rcu_read_unlock();
1577                 return -ENOENT;
1578         }
1579         memcpy(dst, mpath->dst, ETH_ALEN);
1580         mpp_set_pinfo(mpath, mpp, pinfo);
1581         rcu_read_unlock();
1582         return 0;
1583 }
1584
1585 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1586                               int idx, u8 *dst, u8 *mpp,
1587                               struct mpath_info *pinfo)
1588 {
1589         struct ieee80211_sub_if_data *sdata;
1590         struct mesh_path *mpath;
1591
1592         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1593
1594         rcu_read_lock();
1595         mpath = mpp_path_lookup_by_idx(sdata, idx);
1596         if (!mpath) {
1597                 rcu_read_unlock();
1598                 return -ENOENT;
1599         }
1600         memcpy(dst, mpath->dst, ETH_ALEN);
1601         mpp_set_pinfo(mpath, mpp, pinfo);
1602         rcu_read_unlock();
1603         return 0;
1604 }
1605
1606 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1607                                 struct net_device *dev,
1608                                 struct mesh_config *conf)
1609 {
1610         struct ieee80211_sub_if_data *sdata;
1611         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1612
1613         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1614         return 0;
1615 }
1616
1617 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1618 {
1619         return (mask >> (parm-1)) & 0x1;
1620 }
1621
1622 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1623                 const struct mesh_setup *setup)
1624 {
1625         u8 *new_ie;
1626         const u8 *old_ie;
1627         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1628                                         struct ieee80211_sub_if_data, u.mesh);
1629
1630         /* allocate information elements */
1631         new_ie = NULL;
1632         old_ie = ifmsh->ie;
1633
1634         if (setup->ie_len) {
1635                 new_ie = kmemdup(setup->ie, setup->ie_len,
1636                                 GFP_KERNEL);
1637                 if (!new_ie)
1638                         return -ENOMEM;
1639         }
1640         ifmsh->ie_len = setup->ie_len;
1641         ifmsh->ie = new_ie;
1642         kfree(old_ie);
1643
1644         /* now copy the rest of the setup parameters */
1645         ifmsh->mesh_id_len = setup->mesh_id_len;
1646         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1647         ifmsh->mesh_sp_id = setup->sync_method;
1648         ifmsh->mesh_pp_id = setup->path_sel_proto;
1649         ifmsh->mesh_pm_id = setup->path_metric;
1650         ifmsh->user_mpm = setup->user_mpm;
1651         ifmsh->mesh_auth_id = setup->auth_id;
1652         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1653         if (setup->is_authenticated)
1654                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1655         if (setup->is_secure)
1656                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1657
1658         /* mcast rate setting in Mesh Node */
1659         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1660                                                 sizeof(setup->mcast_rate));
1661         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1662
1663         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1664         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1665
1666         return 0;
1667 }
1668
1669 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1670                                         struct net_device *dev, u32 mask,
1671                                         const struct mesh_config *nconf)
1672 {
1673         struct mesh_config *conf;
1674         struct ieee80211_sub_if_data *sdata;
1675         struct ieee80211_if_mesh *ifmsh;
1676
1677         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1678         ifmsh = &sdata->u.mesh;
1679
1680         /* Set the config options which we are interested in setting */
1681         conf = &(sdata->u.mesh.mshcfg);
1682         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1683                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1684         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1685                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1686         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1687                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1688         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1689                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1690         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1691                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1692         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1693                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1694         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1695                 conf->element_ttl = nconf->element_ttl;
1696         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1697                 if (ifmsh->user_mpm)
1698                         return -EBUSY;
1699                 conf->auto_open_plinks = nconf->auto_open_plinks;
1700         }
1701         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1702                 conf->dot11MeshNbrOffsetMaxNeighbor =
1703                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1704         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1705                 conf->dot11MeshHWMPmaxPREQretries =
1706                         nconf->dot11MeshHWMPmaxPREQretries;
1707         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1708                 conf->path_refresh_time = nconf->path_refresh_time;
1709         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1710                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1711         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1712                 conf->dot11MeshHWMPactivePathTimeout =
1713                         nconf->dot11MeshHWMPactivePathTimeout;
1714         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1715                 conf->dot11MeshHWMPpreqMinInterval =
1716                         nconf->dot11MeshHWMPpreqMinInterval;
1717         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1718                 conf->dot11MeshHWMPperrMinInterval =
1719                         nconf->dot11MeshHWMPperrMinInterval;
1720         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1721                            mask))
1722                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1723                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1724         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1725                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1726                 ieee80211_mesh_root_setup(ifmsh);
1727         }
1728         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1729                 /* our current gate announcement implementation rides on root
1730                  * announcements, so require this ifmsh to also be a root node
1731                  * */
1732                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1733                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1734                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1735                         ieee80211_mesh_root_setup(ifmsh);
1736                 }
1737                 conf->dot11MeshGateAnnouncementProtocol =
1738                         nconf->dot11MeshGateAnnouncementProtocol;
1739         }
1740         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1741                 conf->dot11MeshHWMPRannInterval =
1742                         nconf->dot11MeshHWMPRannInterval;
1743         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1744                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1745         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1746                 /* our RSSI threshold implementation is supported only for
1747                  * devices that report signal in dBm.
1748                  */
1749                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1750                         return -ENOTSUPP;
1751                 conf->rssi_threshold = nconf->rssi_threshold;
1752         }
1753         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1754                 conf->ht_opmode = nconf->ht_opmode;
1755                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1756                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1757         }
1758         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1759                 conf->dot11MeshHWMPactivePathToRootTimeout =
1760                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1761         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1762                 conf->dot11MeshHWMProotInterval =
1763                         nconf->dot11MeshHWMProotInterval;
1764         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1765                 conf->dot11MeshHWMPconfirmationInterval =
1766                         nconf->dot11MeshHWMPconfirmationInterval;
1767         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1768                 conf->power_mode = nconf->power_mode;
1769                 ieee80211_mps_local_status_update(sdata);
1770         }
1771         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1772                 conf->dot11MeshAwakeWindowDuration =
1773                         nconf->dot11MeshAwakeWindowDuration;
1774         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1775                 conf->plink_timeout = nconf->plink_timeout;
1776         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1777         return 0;
1778 }
1779
1780 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1781                                const struct mesh_config *conf,
1782                                const struct mesh_setup *setup)
1783 {
1784         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1785         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1786         int err;
1787
1788         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1789         err = copy_mesh_setup(ifmsh, setup);
1790         if (err)
1791                 return err;
1792
1793         /* can mesh use other SMPS modes? */
1794         sdata->smps_mode = IEEE80211_SMPS_OFF;
1795         sdata->needed_rx_chains = sdata->local->rx_chains;
1796
1797         mutex_lock(&sdata->local->mtx);
1798         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1799                                         IEEE80211_CHANCTX_SHARED);
1800         mutex_unlock(&sdata->local->mtx);
1801         if (err)
1802                 return err;
1803
1804         return ieee80211_start_mesh(sdata);
1805 }
1806
1807 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1808 {
1809         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1810
1811         ieee80211_stop_mesh(sdata);
1812         mutex_lock(&sdata->local->mtx);
1813         ieee80211_vif_release_channel(sdata);
1814         mutex_unlock(&sdata->local->mtx);
1815
1816         return 0;
1817 }
1818 #endif
1819
1820 static int ieee80211_change_bss(struct wiphy *wiphy,
1821                                 struct net_device *dev,
1822                                 struct bss_parameters *params)
1823 {
1824         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1825         enum ieee80211_band band;
1826         u32 changed = 0;
1827
1828         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1829                 return -ENOENT;
1830
1831         band = ieee80211_get_sdata_band(sdata);
1832
1833         if (params->use_cts_prot >= 0) {
1834                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1835                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1836         }
1837         if (params->use_short_preamble >= 0) {
1838                 sdata->vif.bss_conf.use_short_preamble =
1839                         params->use_short_preamble;
1840                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1841         }
1842
1843         if (!sdata->vif.bss_conf.use_short_slot &&
1844             band == IEEE80211_BAND_5GHZ) {
1845                 sdata->vif.bss_conf.use_short_slot = true;
1846                 changed |= BSS_CHANGED_ERP_SLOT;
1847         }
1848
1849         if (params->use_short_slot_time >= 0) {
1850                 sdata->vif.bss_conf.use_short_slot =
1851                         params->use_short_slot_time;
1852                 changed |= BSS_CHANGED_ERP_SLOT;
1853         }
1854
1855         if (params->basic_rates) {
1856                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1857                                          wiphy->bands[band],
1858                                          params->basic_rates,
1859                                          params->basic_rates_len,
1860                                          &sdata->vif.bss_conf.basic_rates);
1861                 changed |= BSS_CHANGED_BASIC_RATES;
1862         }
1863
1864         if (params->ap_isolate >= 0) {
1865                 if (params->ap_isolate)
1866                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1867                 else
1868                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1869         }
1870
1871         if (params->ht_opmode >= 0) {
1872                 sdata->vif.bss_conf.ht_operation_mode =
1873                         (u16) params->ht_opmode;
1874                 changed |= BSS_CHANGED_HT;
1875         }
1876
1877         if (params->p2p_ctwindow >= 0) {
1878                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1879                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1880                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1881                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1882                 changed |= BSS_CHANGED_P2P_PS;
1883         }
1884
1885         if (params->p2p_opp_ps > 0) {
1886                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1887                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1888                 changed |= BSS_CHANGED_P2P_PS;
1889         } else if (params->p2p_opp_ps == 0) {
1890                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1891                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1892                 changed |= BSS_CHANGED_P2P_PS;
1893         }
1894
1895         ieee80211_bss_info_change_notify(sdata, changed);
1896
1897         return 0;
1898 }
1899
1900 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1901                                     struct net_device *dev,
1902                                     struct ieee80211_txq_params *params)
1903 {
1904         struct ieee80211_local *local = wiphy_priv(wiphy);
1905         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1906         struct ieee80211_tx_queue_params p;
1907
1908         if (!local->ops->conf_tx)
1909                 return -EOPNOTSUPP;
1910
1911         if (local->hw.queues < IEEE80211_NUM_ACS)
1912                 return -EOPNOTSUPP;
1913
1914         memset(&p, 0, sizeof(p));
1915         p.aifs = params->aifs;
1916         p.cw_max = params->cwmax;
1917         p.cw_min = params->cwmin;
1918         p.txop = params->txop;
1919
1920         /*
1921          * Setting tx queue params disables u-apsd because it's only
1922          * called in master mode.
1923          */
1924         p.uapsd = false;
1925
1926         sdata->tx_conf[params->ac] = p;
1927         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1928                 wiphy_debug(local->hw.wiphy,
1929                             "failed to set TX queue parameters for AC %d\n",
1930                             params->ac);
1931                 return -EINVAL;
1932         }
1933
1934         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1935
1936         return 0;
1937 }
1938
1939 #ifdef CONFIG_PM
1940 static int ieee80211_suspend(struct wiphy *wiphy,
1941                              struct cfg80211_wowlan *wowlan)
1942 {
1943         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1944 }
1945
1946 static int ieee80211_resume(struct wiphy *wiphy)
1947 {
1948         return __ieee80211_resume(wiphy_priv(wiphy));
1949 }
1950 #else
1951 #define ieee80211_suspend NULL
1952 #define ieee80211_resume NULL
1953 #endif
1954
1955 static int ieee80211_scan(struct wiphy *wiphy,
1956                           struct cfg80211_scan_request *req)
1957 {
1958         struct ieee80211_sub_if_data *sdata;
1959
1960         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1961
1962         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1963         case NL80211_IFTYPE_STATION:
1964         case NL80211_IFTYPE_ADHOC:
1965         case NL80211_IFTYPE_MESH_POINT:
1966         case NL80211_IFTYPE_P2P_CLIENT:
1967         case NL80211_IFTYPE_P2P_DEVICE:
1968                 break;
1969         case NL80211_IFTYPE_P2P_GO:
1970                 if (sdata->local->ops->hw_scan)
1971                         break;
1972                 /*
1973                  * FIXME: implement NoA while scanning in software,
1974                  * for now fall through to allow scanning only when
1975                  * beaconing hasn't been configured yet
1976                  */
1977         case NL80211_IFTYPE_AP:
1978                 /*
1979                  * If the scan has been forced (and the driver supports
1980                  * forcing), don't care about being beaconing already.
1981                  * This will create problems to the attached stations (e.g. all
1982                  * the  frames sent while scanning on other channel will be
1983                  * lost)
1984                  */
1985                 if (sdata->u.ap.beacon &&
1986                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1987                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1988                         return -EOPNOTSUPP;
1989                 break;
1990         default:
1991                 return -EOPNOTSUPP;
1992         }
1993
1994         return ieee80211_request_scan(sdata, req);
1995 }
1996
1997 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
1998 {
1999         ieee80211_scan_cancel(wiphy_priv(wiphy));
2000 }
2001
2002 static int
2003 ieee80211_sched_scan_start(struct wiphy *wiphy,
2004                            struct net_device *dev,
2005                            struct cfg80211_sched_scan_request *req)
2006 {
2007         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2008
2009         if (!sdata->local->ops->sched_scan_start)
2010                 return -EOPNOTSUPP;
2011
2012         return ieee80211_request_sched_scan_start(sdata, req);
2013 }
2014
2015 static int
2016 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2017 {
2018         struct ieee80211_local *local = wiphy_priv(wiphy);
2019
2020         if (!local->ops->sched_scan_stop)
2021                 return -EOPNOTSUPP;
2022
2023         return ieee80211_request_sched_scan_stop(local);
2024 }
2025
2026 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2027                           struct cfg80211_auth_request *req)
2028 {
2029         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2030 }
2031
2032 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2033                            struct cfg80211_assoc_request *req)
2034 {
2035         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2036 }
2037
2038 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2039                             struct cfg80211_deauth_request *req)
2040 {
2041         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2042 }
2043
2044 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2045                               struct cfg80211_disassoc_request *req)
2046 {
2047         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2048 }
2049
2050 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2051                                struct cfg80211_ibss_params *params)
2052 {
2053         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2054 }
2055
2056 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2057 {
2058         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2059 }
2060
2061 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2062                               struct ocb_setup *setup)
2063 {
2064         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2065 }
2066
2067 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2068 {
2069         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2070 }
2071
2072 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2073                                     int rate[IEEE80211_NUM_BANDS])
2074 {
2075         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2076
2077         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2078                sizeof(int) * IEEE80211_NUM_BANDS);
2079
2080         return 0;
2081 }
2082
2083 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2084 {
2085         struct ieee80211_local *local = wiphy_priv(wiphy);
2086         int err;
2087
2088         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2089                 ieee80211_check_fast_xmit_all(local);
2090
2091                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2092
2093                 if (err) {
2094                         ieee80211_check_fast_xmit_all(local);
2095                         return err;
2096                 }
2097         }
2098
2099         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2100             (changed & WIPHY_PARAM_DYN_ACK)) {
2101                 s16 coverage_class;
2102
2103                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2104                                         wiphy->coverage_class : -1;
2105                 err = drv_set_coverage_class(local, coverage_class);
2106
2107                 if (err)
2108                         return err;
2109         }
2110
2111         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2112                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2113
2114                 if (err)
2115                         return err;
2116         }
2117
2118         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2119                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2120                         return -EINVAL;
2121                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2122         }
2123         if (changed & WIPHY_PARAM_RETRY_LONG) {
2124                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2125                         return -EINVAL;
2126                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2127         }
2128         if (changed &
2129             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2130                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2131
2132         return 0;
2133 }
2134
2135 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2136                                   struct wireless_dev *wdev,
2137                                   enum nl80211_tx_power_setting type, int mbm)
2138 {
2139         struct ieee80211_local *local = wiphy_priv(wiphy);
2140         struct ieee80211_sub_if_data *sdata;
2141         enum nl80211_tx_power_setting txp_type = type;
2142         bool update_txp_type = false;
2143
2144         if (wdev) {
2145                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2146
2147                 switch (type) {
2148                 case NL80211_TX_POWER_AUTOMATIC:
2149                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2150                         txp_type = NL80211_TX_POWER_LIMITED;
2151                         break;
2152                 case NL80211_TX_POWER_LIMITED:
2153                 case NL80211_TX_POWER_FIXED:
2154                         if (mbm < 0 || (mbm % 100))
2155                                 return -EOPNOTSUPP;
2156                         sdata->user_power_level = MBM_TO_DBM(mbm);
2157                         break;
2158                 }
2159
2160                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2161                         update_txp_type = true;
2162                         sdata->vif.bss_conf.txpower_type = txp_type;
2163                 }
2164
2165                 ieee80211_recalc_txpower(sdata, update_txp_type);
2166
2167                 return 0;
2168         }
2169
2170         switch (type) {
2171         case NL80211_TX_POWER_AUTOMATIC:
2172                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2173                 txp_type = NL80211_TX_POWER_LIMITED;
2174                 break;
2175         case NL80211_TX_POWER_LIMITED:
2176         case NL80211_TX_POWER_FIXED:
2177                 if (mbm < 0 || (mbm % 100))
2178                         return -EOPNOTSUPP;
2179                 local->user_power_level = MBM_TO_DBM(mbm);
2180                 break;
2181         }
2182
2183         mutex_lock(&local->iflist_mtx);
2184         list_for_each_entry(sdata, &local->interfaces, list) {
2185                 sdata->user_power_level = local->user_power_level;
2186                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2187                         update_txp_type = true;
2188                 sdata->vif.bss_conf.txpower_type = txp_type;
2189         }
2190         list_for_each_entry(sdata, &local->interfaces, list)
2191                 ieee80211_recalc_txpower(sdata, update_txp_type);
2192         mutex_unlock(&local->iflist_mtx);
2193
2194         return 0;
2195 }
2196
2197 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2198                                   struct wireless_dev *wdev,
2199                                   int *dbm)
2200 {
2201         struct ieee80211_local *local = wiphy_priv(wiphy);
2202         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2203
2204         if (local->ops->get_txpower)
2205                 return drv_get_txpower(local, sdata, dbm);
2206
2207         if (!local->use_chanctx)
2208                 *dbm = local->hw.conf.power_level;
2209         else
2210                 *dbm = sdata->vif.bss_conf.txpower;
2211
2212         return 0;
2213 }
2214
2215 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2216                                   const u8 *addr)
2217 {
2218         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2219
2220         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2221
2222         return 0;
2223 }
2224
2225 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2226 {
2227         struct ieee80211_local *local = wiphy_priv(wiphy);
2228
2229         drv_rfkill_poll(local);
2230 }
2231
2232 #ifdef CONFIG_NL80211_TESTMODE
2233 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2234                                   struct wireless_dev *wdev,
2235                                   void *data, int len)
2236 {
2237         struct ieee80211_local *local = wiphy_priv(wiphy);
2238         struct ieee80211_vif *vif = NULL;
2239
2240         if (!local->ops->testmode_cmd)
2241                 return -EOPNOTSUPP;
2242
2243         if (wdev) {
2244                 struct ieee80211_sub_if_data *sdata;
2245
2246                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2247                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2248                         vif = &sdata->vif;
2249         }
2250
2251         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2252 }
2253
2254 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2255                                    struct sk_buff *skb,
2256                                    struct netlink_callback *cb,
2257                                    void *data, int len)
2258 {
2259         struct ieee80211_local *local = wiphy_priv(wiphy);
2260
2261         if (!local->ops->testmode_dump)
2262                 return -EOPNOTSUPP;
2263
2264         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2265 }
2266 #endif
2267
2268 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2269                                 enum ieee80211_smps_mode smps_mode)
2270 {
2271         struct sta_info *sta;
2272         enum ieee80211_smps_mode old_req;
2273
2274         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2275                 return -EINVAL;
2276
2277         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2278                 return 0;
2279
2280         old_req = sdata->u.ap.req_smps;
2281         sdata->u.ap.req_smps = smps_mode;
2282
2283         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2284         if (old_req == smps_mode ||
2285             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2286                 return 0;
2287
2288          /* If no associated stations, there's no need to do anything */
2289         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2290                 sdata->smps_mode = smps_mode;
2291                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2292                 return 0;
2293         }
2294
2295         ht_dbg(sdata,
2296                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2297                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2298
2299         mutex_lock(&sdata->local->sta_mtx);
2300         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2301                 /*
2302                  * Only stations associated to our AP and
2303                  * associated VLANs
2304                  */
2305                 if (sta->sdata->bss != &sdata->u.ap)
2306                         continue;
2307
2308                 /* This station doesn't support MIMO - skip it */
2309                 if (sta_info_tx_streams(sta) == 1)
2310                         continue;
2311
2312                 /*
2313                  * Don't wake up a STA just to send the action frame
2314                  * unless we are getting more restrictive.
2315                  */
2316                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2317                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2318                                                    smps_mode)) {
2319                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2320                                sta->sta.addr);
2321                         continue;
2322                 }
2323
2324                 /*
2325                  * If the STA is not authorized, wait until it gets
2326                  * authorized and the action frame will be sent then.
2327                  */
2328                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2329                         continue;
2330
2331                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2332                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2333                                            sdata->vif.bss_conf.bssid);
2334         }
2335         mutex_unlock(&sdata->local->sta_mtx);
2336
2337         sdata->smps_mode = smps_mode;
2338         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2339
2340         return 0;
2341 }
2342
2343 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2344                                  enum ieee80211_smps_mode smps_mode)
2345 {
2346         const u8 *ap;
2347         enum ieee80211_smps_mode old_req;
2348         int err;
2349         struct sta_info *sta;
2350         bool tdls_peer_found = false;
2351
2352         lockdep_assert_held(&sdata->wdev.mtx);
2353
2354         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2355                 return -EINVAL;
2356
2357         old_req = sdata->u.mgd.req_smps;
2358         sdata->u.mgd.req_smps = smps_mode;
2359
2360         if (old_req == smps_mode &&
2361             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2362                 return 0;
2363
2364         /*
2365          * If not associated, or current association is not an HT
2366          * association, there's no need to do anything, just store
2367          * the new value until we associate.
2368          */
2369         if (!sdata->u.mgd.associated ||
2370             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2371                 return 0;
2372
2373         ap = sdata->u.mgd.associated->bssid;
2374
2375         rcu_read_lock();
2376         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2377                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2378                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2379                         continue;
2380
2381                 tdls_peer_found = true;
2382                 break;
2383         }
2384         rcu_read_unlock();
2385
2386         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2387                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2388                         smps_mode = IEEE80211_SMPS_OFF;
2389                 else
2390                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2391         }
2392
2393         /* send SM PS frame to AP */
2394         err = ieee80211_send_smps_action(sdata, smps_mode,
2395                                          ap, ap);
2396         if (err)
2397                 sdata->u.mgd.req_smps = old_req;
2398         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2399                 ieee80211_teardown_tdls_peers(sdata);
2400
2401         return err;
2402 }
2403
2404 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2405                                     bool enabled, int timeout)
2406 {
2407         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2408         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2409
2410         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2411                 return -EOPNOTSUPP;
2412
2413         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2414                 return -EOPNOTSUPP;
2415
2416         if (enabled == sdata->u.mgd.powersave &&
2417             timeout == local->dynamic_ps_forced_timeout)
2418                 return 0;
2419
2420         sdata->u.mgd.powersave = enabled;
2421         local->dynamic_ps_forced_timeout = timeout;
2422
2423         /* no change, but if automatic follow powersave */
2424         sdata_lock(sdata);
2425         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2426         sdata_unlock(sdata);
2427
2428         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2429                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2430
2431         ieee80211_recalc_ps(local);
2432         ieee80211_recalc_ps_vif(sdata);
2433
2434         return 0;
2435 }
2436
2437 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2438                                          struct net_device *dev,
2439                                          s32 rssi_thold, u32 rssi_hyst)
2440 {
2441         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2442         struct ieee80211_vif *vif = &sdata->vif;
2443         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2444
2445         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2446             rssi_hyst == bss_conf->cqm_rssi_hyst)
2447                 return 0;
2448
2449         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2450             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2451                 return -EOPNOTSUPP;
2452
2453         bss_conf->cqm_rssi_thold = rssi_thold;
2454         bss_conf->cqm_rssi_hyst = rssi_hyst;
2455         sdata->u.mgd.last_cqm_event_signal = 0;
2456
2457         /* tell the driver upon association, unless already associated */
2458         if (sdata->u.mgd.associated &&
2459             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2460                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2461
2462         return 0;
2463 }
2464
2465 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2466                                       struct net_device *dev,
2467                                       const u8 *addr,
2468                                       const struct cfg80211_bitrate_mask *mask)
2469 {
2470         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2471         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2472         int i, ret;
2473
2474         if (!ieee80211_sdata_running(sdata))
2475                 return -ENETDOWN;
2476
2477         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2478                 ret = drv_set_bitrate_mask(local, sdata, mask);
2479                 if (ret)
2480                         return ret;
2481         }
2482
2483         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2484                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2485                 int j;
2486
2487                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2488                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2489                        sizeof(mask->control[i].ht_mcs));
2490                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2491                        mask->control[i].vht_mcs,
2492                        sizeof(mask->control[i].vht_mcs));
2493
2494                 sdata->rc_has_mcs_mask[i] = false;
2495                 sdata->rc_has_vht_mcs_mask[i] = false;
2496                 if (!sband)
2497                         continue;
2498
2499                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2500                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2501                                 sdata->rc_has_mcs_mask[i] = true;
2502                                 break;
2503                         }
2504                 }
2505
2506                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2507                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2508                                 sdata->rc_has_vht_mcs_mask[i] = true;
2509                                 break;
2510                         }
2511                 }
2512         }
2513
2514         return 0;
2515 }
2516
2517 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2518                                            struct ieee80211_roc_work *new_roc,
2519                                            struct ieee80211_roc_work *cur_roc)
2520 {
2521         unsigned long now = jiffies;
2522         unsigned long remaining = cur_roc->hw_start_time +
2523                                   msecs_to_jiffies(cur_roc->duration) -
2524                                   now;
2525
2526         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2527                 return false;
2528
2529         /* if it doesn't fit entirely, schedule a new one */
2530         if (new_roc->duration > jiffies_to_msecs(remaining))
2531                 return false;
2532
2533         ieee80211_handle_roc_started(new_roc);
2534
2535         /* add to dependents so we send the expired event properly */
2536         list_add_tail(&new_roc->list, &cur_roc->dependents);
2537         return true;
2538 }
2539
2540 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2541 {
2542         lockdep_assert_held(&local->mtx);
2543
2544         local->roc_cookie_counter++;
2545
2546         /* wow, you wrapped 64 bits ... more likely a bug */
2547         if (WARN_ON(local->roc_cookie_counter == 0))
2548                 local->roc_cookie_counter++;
2549
2550         return local->roc_cookie_counter;
2551 }
2552
2553 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2554                                     struct ieee80211_sub_if_data *sdata,
2555                                     struct ieee80211_channel *channel,
2556                                     unsigned int duration, u64 *cookie,
2557                                     struct sk_buff *txskb,
2558                                     enum ieee80211_roc_type type)
2559 {
2560         struct ieee80211_roc_work *roc, *tmp;
2561         bool queued = false;
2562         int ret;
2563
2564         lockdep_assert_held(&local->mtx);
2565
2566         if (local->use_chanctx && !local->ops->remain_on_channel)
2567                 return -EOPNOTSUPP;
2568
2569         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2570         if (!roc)
2571                 return -ENOMEM;
2572
2573         /*
2574          * If the duration is zero, then the driver
2575          * wouldn't actually do anything. Set it to
2576          * 10 for now.
2577          *
2578          * TODO: cancel the off-channel operation
2579          *       when we get the SKB's TX status and
2580          *       the wait time was zero before.
2581          */
2582         if (!duration)
2583                 duration = 10;
2584
2585         roc->chan = channel;
2586         roc->duration = duration;
2587         roc->req_duration = duration;
2588         roc->frame = txskb;
2589         roc->type = type;
2590         roc->sdata = sdata;
2591         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2592         INIT_LIST_HEAD(&roc->dependents);
2593
2594         /*
2595          * cookie is either the roc cookie (for normal roc)
2596          * or the SKB (for mgmt TX)
2597          */
2598         if (!txskb) {
2599                 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2600                 *cookie = roc->cookie;
2601         } else {
2602                 roc->mgmt_tx_cookie = *cookie;
2603         }
2604
2605         /* if there's one pending or we're scanning, queue this one */
2606         if (!list_empty(&local->roc_list) ||
2607             local->scanning || ieee80211_is_radar_required(local))
2608                 goto out_check_combine;
2609
2610         /* if not HW assist, just queue & schedule work */
2611         if (!local->ops->remain_on_channel) {
2612                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2613                 goto out_queue;
2614         }
2615
2616         /* otherwise actually kick it off here (for error handling) */
2617
2618         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2619         if (ret) {
2620                 kfree(roc);
2621                 return ret;
2622         }
2623
2624         roc->started = true;
2625         goto out_queue;
2626
2627  out_check_combine:
2628         list_for_each_entry(tmp, &local->roc_list, list) {
2629                 if (tmp->chan != channel || tmp->sdata != sdata)
2630                         continue;
2631
2632                 /*
2633                  * Extend this ROC if possible:
2634                  *
2635                  * If it hasn't started yet, just increase the duration
2636                  * and add the new one to the list of dependents.
2637                  * If the type of the new ROC has higher priority, modify the
2638                  * type of the previous one to match that of the new one.
2639                  */
2640                 if (!tmp->started) {
2641                         list_add_tail(&roc->list, &tmp->dependents);
2642                         tmp->duration = max(tmp->duration, roc->duration);
2643                         tmp->type = max(tmp->type, roc->type);
2644                         queued = true;
2645                         break;
2646                 }
2647
2648                 /* If it has already started, it's more difficult ... */
2649                 if (local->ops->remain_on_channel) {
2650                         /*
2651                          * In the offloaded ROC case, if it hasn't begun, add
2652                          * this new one to the dependent list to be handled
2653                          * when the master one begins. If it has begun,
2654                          * check if it fits entirely within the existing one,
2655                          * in which case it will just be dependent as well.
2656                          * Otherwise, schedule it by itself.
2657                          */
2658                         if (!tmp->hw_begun) {
2659                                 list_add_tail(&roc->list, &tmp->dependents);
2660                                 queued = true;
2661                                 break;
2662                         }
2663
2664                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2665                                 queued = true;
2666                 } else if (del_timer_sync(&tmp->work.timer)) {
2667                         unsigned long new_end;
2668
2669                         /*
2670                          * In the software ROC case, cancel the timer, if
2671                          * that fails then the finish work is already
2672                          * queued/pending and thus we queue the new ROC
2673                          * normally, if that succeeds then we can extend
2674                          * the timer duration and TX the frame (if any.)
2675                          */
2676
2677                         list_add_tail(&roc->list, &tmp->dependents);
2678                         queued = true;
2679
2680                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2681
2682                         /* ok, it was started & we canceled timer */
2683                         if (time_after(new_end, tmp->work.timer.expires))
2684                                 mod_timer(&tmp->work.timer, new_end);
2685                         else
2686                                 add_timer(&tmp->work.timer);
2687
2688                         ieee80211_handle_roc_started(roc);
2689                 }
2690                 break;
2691         }
2692
2693  out_queue:
2694         if (!queued)
2695                 list_add_tail(&roc->list, &local->roc_list);
2696
2697         return 0;
2698 }
2699
2700 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2701                                        struct wireless_dev *wdev,
2702                                        struct ieee80211_channel *chan,
2703                                        unsigned int duration,
2704                                        u64 *cookie)
2705 {
2706         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2707         struct ieee80211_local *local = sdata->local;
2708         int ret;
2709
2710         mutex_lock(&local->mtx);
2711         ret = ieee80211_start_roc_work(local, sdata, chan,
2712                                        duration, cookie, NULL,
2713                                        IEEE80211_ROC_TYPE_NORMAL);
2714         mutex_unlock(&local->mtx);
2715
2716         return ret;
2717 }
2718
2719 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2720                                 u64 cookie, bool mgmt_tx)
2721 {
2722         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2723         int ret;
2724
2725         mutex_lock(&local->mtx);
2726         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2727                 struct ieee80211_roc_work *dep, *tmp2;
2728
2729                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2730                         if (!mgmt_tx && dep->cookie != cookie)
2731                                 continue;
2732                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2733                                 continue;
2734                         /* found dependent item -- just remove it */
2735                         list_del(&dep->list);
2736                         mutex_unlock(&local->mtx);
2737
2738                         ieee80211_roc_notify_destroy(dep, true);
2739                         return 0;
2740                 }
2741
2742                 if (!mgmt_tx && roc->cookie != cookie)
2743                         continue;
2744                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2745                         continue;
2746
2747                 found = roc;
2748                 break;
2749         }
2750
2751         if (!found) {
2752                 mutex_unlock(&local->mtx);
2753                 return -ENOENT;
2754         }
2755
2756         /*
2757          * We found the item to cancel, so do that. Note that it
2758          * may have dependents, which we also cancel (and send
2759          * the expired signal for.) Not doing so would be quite
2760          * tricky here, but we may need to fix it later.
2761          */
2762
2763         if (local->ops->remain_on_channel) {
2764                 if (found->started) {
2765                         ret = drv_cancel_remain_on_channel(local);
2766                         if (WARN_ON_ONCE(ret)) {
2767                                 mutex_unlock(&local->mtx);
2768                                 return ret;
2769                         }
2770                 }
2771
2772                 list_del(&found->list);
2773
2774                 if (found->started)
2775                         ieee80211_start_next_roc(local);
2776                 mutex_unlock(&local->mtx);
2777
2778                 ieee80211_roc_notify_destroy(found, true);
2779         } else {
2780                 /* work may be pending so use it all the time */
2781                 found->abort = true;
2782                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2783
2784                 mutex_unlock(&local->mtx);
2785
2786                 /* work will clean up etc */
2787                 flush_delayed_work(&found->work);
2788                 WARN_ON(!found->to_be_freed);
2789                 kfree(found);
2790         }
2791
2792         return 0;
2793 }
2794
2795 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2796                                               struct wireless_dev *wdev,
2797                                               u64 cookie)
2798 {
2799         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2800         struct ieee80211_local *local = sdata->local;
2801
2802         return ieee80211_cancel_roc(local, cookie, false);
2803 }
2804
2805 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2806                                            struct net_device *dev,
2807                                            struct cfg80211_chan_def *chandef,
2808                                            u32 cac_time_ms)
2809 {
2810         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2811         struct ieee80211_local *local = sdata->local;
2812         int err;
2813
2814         mutex_lock(&local->mtx);
2815         if (!list_empty(&local->roc_list) || local->scanning) {
2816                 err = -EBUSY;
2817                 goto out_unlock;
2818         }
2819
2820         /* whatever, but channel contexts should not complain about that one */
2821         sdata->smps_mode = IEEE80211_SMPS_OFF;
2822         sdata->needed_rx_chains = local->rx_chains;
2823
2824         err = ieee80211_vif_use_channel(sdata, chandef,
2825                                         IEEE80211_CHANCTX_SHARED);
2826         if (err)
2827                 goto out_unlock;
2828
2829         ieee80211_queue_delayed_work(&sdata->local->hw,
2830                                      &sdata->dfs_cac_timer_work,
2831                                      msecs_to_jiffies(cac_time_ms));
2832
2833  out_unlock:
2834         mutex_unlock(&local->mtx);
2835         return err;
2836 }
2837
2838 static struct cfg80211_beacon_data *
2839 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2840 {
2841         struct cfg80211_beacon_data *new_beacon;
2842         u8 *pos;
2843         int len;
2844
2845         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2846               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2847               beacon->probe_resp_len;
2848
2849         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2850         if (!new_beacon)
2851                 return NULL;
2852
2853         pos = (u8 *)(new_beacon + 1);
2854         if (beacon->head_len) {
2855                 new_beacon->head_len = beacon->head_len;
2856                 new_beacon->head = pos;
2857                 memcpy(pos, beacon->head, beacon->head_len);
2858                 pos += beacon->head_len;
2859         }
2860         if (beacon->tail_len) {
2861                 new_beacon->tail_len = beacon->tail_len;
2862                 new_beacon->tail = pos;
2863                 memcpy(pos, beacon->tail, beacon->tail_len);
2864                 pos += beacon->tail_len;
2865         }
2866         if (beacon->beacon_ies_len) {
2867                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2868                 new_beacon->beacon_ies = pos;
2869                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2870                 pos += beacon->beacon_ies_len;
2871         }
2872         if (beacon->proberesp_ies_len) {
2873                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2874                 new_beacon->proberesp_ies = pos;
2875                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2876                 pos += beacon->proberesp_ies_len;
2877         }
2878         if (beacon->assocresp_ies_len) {
2879                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2880                 new_beacon->assocresp_ies = pos;
2881                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2882                 pos += beacon->assocresp_ies_len;
2883         }
2884         if (beacon->probe_resp_len) {
2885                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2886                 beacon->probe_resp = pos;
2887                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2888                 pos += beacon->probe_resp_len;
2889         }
2890
2891         return new_beacon;
2892 }
2893
2894 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2895 {
2896         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2897
2898         ieee80211_queue_work(&sdata->local->hw,
2899                              &sdata->csa_finalize_work);
2900 }
2901 EXPORT_SYMBOL(ieee80211_csa_finish);
2902
2903 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2904                                           u32 *changed)
2905 {
2906         int err;
2907
2908         switch (sdata->vif.type) {
2909         case NL80211_IFTYPE_AP:
2910                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2911                                               NULL);
2912                 kfree(sdata->u.ap.next_beacon);
2913                 sdata->u.ap.next_beacon = NULL;
2914
2915                 if (err < 0)
2916                         return err;
2917                 *changed |= err;
2918                 break;
2919         case NL80211_IFTYPE_ADHOC:
2920                 err = ieee80211_ibss_finish_csa(sdata);
2921                 if (err < 0)
2922                         return err;
2923                 *changed |= err;
2924                 break;
2925 #ifdef CONFIG_MAC80211_MESH
2926         case NL80211_IFTYPE_MESH_POINT:
2927                 err = ieee80211_mesh_finish_csa(sdata);
2928                 if (err < 0)
2929                         return err;
2930                 *changed |= err;
2931                 break;
2932 #endif
2933         default:
2934                 WARN_ON(1);
2935                 return -EINVAL;
2936         }
2937
2938         return 0;
2939 }
2940
2941 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2942 {
2943         struct ieee80211_local *local = sdata->local;
2944         u32 changed = 0;
2945         int err;
2946
2947         sdata_assert_lock(sdata);
2948         lockdep_assert_held(&local->mtx);
2949         lockdep_assert_held(&local->chanctx_mtx);
2950
2951         /*
2952          * using reservation isn't immediate as it may be deferred until later
2953          * with multi-vif. once reservation is complete it will re-schedule the
2954          * work with no reserved_chanctx so verify chandef to check if it
2955          * completed successfully
2956          */
2957
2958         if (sdata->reserved_chanctx) {
2959                 /*
2960                  * with multi-vif csa driver may call ieee80211_csa_finish()
2961                  * many times while waiting for other interfaces to use their
2962                  * reservations
2963                  */
2964                 if (sdata->reserved_ready)
2965                         return 0;
2966
2967                 return ieee80211_vif_use_reserved_context(sdata);
2968         }
2969
2970         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2971                                         &sdata->csa_chandef))
2972                 return -EINVAL;
2973
2974         sdata->vif.csa_active = false;
2975
2976         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2977         if (err)
2978                 return err;
2979
2980         ieee80211_bss_info_change_notify(sdata, changed);
2981
2982         if (sdata->csa_block_tx) {
2983                 ieee80211_wake_vif_queues(local, sdata,
2984                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2985                 sdata->csa_block_tx = false;
2986         }
2987
2988         err = drv_post_channel_switch(sdata);
2989         if (err)
2990                 return err;
2991
2992         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2993
2994         return 0;
2995 }
2996
2997 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2998 {
2999         if (__ieee80211_csa_finalize(sdata)) {
3000                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3001                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3002                                     GFP_KERNEL);
3003         }
3004 }
3005
3006 void ieee80211_csa_finalize_work(struct work_struct *work)
3007 {
3008         struct ieee80211_sub_if_data *sdata =
3009                 container_of(work, struct ieee80211_sub_if_data,
3010                              csa_finalize_work);
3011         struct ieee80211_local *local = sdata->local;
3012
3013         sdata_lock(sdata);
3014         mutex_lock(&local->mtx);
3015         mutex_lock(&local->chanctx_mtx);
3016
3017         /* AP might have been stopped while waiting for the lock. */
3018         if (!sdata->vif.csa_active)
3019                 goto unlock;
3020
3021         if (!ieee80211_sdata_running(sdata))
3022                 goto unlock;
3023
3024         ieee80211_csa_finalize(sdata);
3025
3026 unlock:
3027         mutex_unlock(&local->chanctx_mtx);
3028         mutex_unlock(&local->mtx);
3029         sdata_unlock(sdata);
3030 }
3031
3032 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3033                                     struct cfg80211_csa_settings *params,
3034                                     u32 *changed)
3035 {
3036         struct ieee80211_csa_settings csa = {};
3037         int err;
3038
3039         switch (sdata->vif.type) {
3040         case NL80211_IFTYPE_AP:
3041                 sdata->u.ap.next_beacon =
3042                         cfg80211_beacon_dup(&params->beacon_after);
3043                 if (!sdata->u.ap.next_beacon)
3044                         return -ENOMEM;
3045
3046                 /*
3047                  * With a count of 0, we don't have to wait for any
3048                  * TBTT before switching, so complete the CSA
3049                  * immediately.  In theory, with a count == 1 we
3050                  * should delay the switch until just before the next
3051                  * TBTT, but that would complicate things so we switch
3052                  * immediately too.  If we would delay the switch
3053                  * until the next TBTT, we would have to set the probe
3054                  * response here.
3055                  *
3056                  * TODO: A channel switch with count <= 1 without
3057                  * sending a CSA action frame is kind of useless,
3058                  * because the clients won't know we're changing
3059                  * channels.  The action frame must be implemented
3060                  * either here or in the userspace.
3061                  */
3062                 if (params->count <= 1)
3063                         break;
3064
3065                 if ((params->n_counter_offsets_beacon >
3066                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3067                     (params->n_counter_offsets_presp >
3068                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3069                         return -EINVAL;
3070
3071                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3072                 csa.counter_offsets_presp = params->counter_offsets_presp;
3073                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3074                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3075                 csa.count = params->count;
3076
3077                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3078                 if (err < 0) {
3079                         kfree(sdata->u.ap.next_beacon);
3080                         return err;
3081                 }
3082                 *changed |= err;
3083
3084                 break;
3085         case NL80211_IFTYPE_ADHOC:
3086                 if (!sdata->vif.bss_conf.ibss_joined)
3087                         return -EINVAL;
3088
3089                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3090                         return -EINVAL;
3091
3092                 switch (params->chandef.width) {
3093                 case NL80211_CHAN_WIDTH_40:
3094                         if (cfg80211_get_chandef_type(&params->chandef) !=
3095                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3096                                 return -EINVAL;
3097                 case NL80211_CHAN_WIDTH_5:
3098                 case NL80211_CHAN_WIDTH_10:
3099                 case NL80211_CHAN_WIDTH_20_NOHT:
3100                 case NL80211_CHAN_WIDTH_20:
3101                         break;
3102                 default:
3103                         return -EINVAL;
3104                 }
3105
3106                 /* changes into another band are not supported */
3107                 if (sdata->u.ibss.chandef.chan->band !=
3108                     params->chandef.chan->band)
3109                         return -EINVAL;
3110
3111                 /* see comments in the NL80211_IFTYPE_AP block */
3112                 if (params->count > 1) {
3113                         err = ieee80211_ibss_csa_beacon(sdata, params);
3114                         if (err < 0)
3115                                 return err;
3116                         *changed |= err;
3117                 }
3118
3119                 ieee80211_send_action_csa(sdata, params);
3120
3121                 break;
3122 #ifdef CONFIG_MAC80211_MESH
3123         case NL80211_IFTYPE_MESH_POINT: {
3124                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3125
3126                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3127                         return -EINVAL;
3128
3129                 /* changes into another band are not supported */
3130                 if (sdata->vif.bss_conf.chandef.chan->band !=
3131                     params->chandef.chan->band)
3132                         return -EINVAL;
3133
3134                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3135                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3136                         if (!ifmsh->pre_value)
3137                                 ifmsh->pre_value = 1;
3138                         else
3139                                 ifmsh->pre_value++;
3140                 }
3141
3142                 /* see comments in the NL80211_IFTYPE_AP block */
3143                 if (params->count > 1) {
3144                         err = ieee80211_mesh_csa_beacon(sdata, params);
3145                         if (err < 0) {
3146                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3147                                 return err;
3148                         }
3149                         *changed |= err;
3150                 }
3151
3152                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3153                         ieee80211_send_action_csa(sdata, params);
3154
3155                 break;
3156                 }
3157 #endif
3158         default:
3159                 return -EOPNOTSUPP;
3160         }
3161
3162         return 0;
3163 }
3164
3165 static int
3166 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3167                            struct cfg80211_csa_settings *params)
3168 {
3169         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3170         struct ieee80211_local *local = sdata->local;
3171         struct ieee80211_channel_switch ch_switch;
3172         struct ieee80211_chanctx_conf *conf;
3173         struct ieee80211_chanctx *chanctx;
3174         u32 changed = 0;
3175         int err;
3176
3177         sdata_assert_lock(sdata);
3178         lockdep_assert_held(&local->mtx);
3179
3180         if (!list_empty(&local->roc_list) || local->scanning)
3181                 return -EBUSY;
3182
3183         if (sdata->wdev.cac_started)
3184                 return -EBUSY;
3185
3186         if (cfg80211_chandef_identical(&params->chandef,
3187                                        &sdata->vif.bss_conf.chandef))
3188                 return -EINVAL;
3189
3190         /* don't allow another channel switch if one is already active. */
3191         if (sdata->vif.csa_active)
3192                 return -EBUSY;
3193
3194         mutex_lock(&local->chanctx_mtx);
3195         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3196                                          lockdep_is_held(&local->chanctx_mtx));
3197         if (!conf) {
3198                 err = -EBUSY;
3199                 goto out;
3200         }
3201
3202         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3203         if (!chanctx) {
3204                 err = -EBUSY;
3205                 goto out;
3206         }
3207
3208         ch_switch.timestamp = 0;
3209         ch_switch.device_timestamp = 0;
3210         ch_switch.block_tx = params->block_tx;
3211         ch_switch.chandef = params->chandef;
3212         ch_switch.count = params->count;
3213
3214         err = drv_pre_channel_switch(sdata, &ch_switch);
3215         if (err)
3216                 goto out;
3217
3218         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3219                                             chanctx->mode,
3220                                             params->radar_required);
3221         if (err)
3222                 goto out;
3223
3224         /* if reservation is invalid then this will fail */
3225         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3226         if (err) {
3227                 ieee80211_vif_unreserve_chanctx(sdata);
3228                 goto out;
3229         }
3230
3231         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3232         if (err) {
3233                 ieee80211_vif_unreserve_chanctx(sdata);
3234                 goto out;
3235         }
3236
3237         sdata->csa_chandef = params->chandef;
3238         sdata->csa_block_tx = params->block_tx;
3239         sdata->vif.csa_active = true;
3240
3241         if (sdata->csa_block_tx)
3242                 ieee80211_stop_vif_queues(local, sdata,
3243                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3244
3245         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3246                                           params->count);
3247
3248         if (changed) {
3249                 ieee80211_bss_info_change_notify(sdata, changed);
3250                 drv_channel_switch_beacon(sdata, &params->chandef);
3251         } else {
3252                 /* if the beacon didn't change, we can finalize immediately */
3253                 ieee80211_csa_finalize(sdata);
3254         }
3255
3256 out:
3257         mutex_unlock(&local->chanctx_mtx);
3258         return err;
3259 }
3260
3261 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3262                              struct cfg80211_csa_settings *params)
3263 {
3264         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3265         struct ieee80211_local *local = sdata->local;
3266         int err;
3267
3268         mutex_lock(&local->mtx);
3269         err = __ieee80211_channel_switch(wiphy, dev, params);
3270         mutex_unlock(&local->mtx);
3271
3272         return err;
3273 }
3274
3275 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3276                                               struct sk_buff *skb, u64 *cookie,
3277                                               gfp_t gfp)
3278 {
3279         unsigned long spin_flags;
3280         struct sk_buff *ack_skb;
3281         int id;
3282
3283         ack_skb = skb_copy(skb, gfp);
3284         if (!ack_skb)
3285                 return ERR_PTR(-ENOMEM);
3286
3287         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3288         id = idr_alloc(&local->ack_status_frames, ack_skb,
3289                        1, 0x10000, GFP_ATOMIC);
3290         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3291
3292         if (id < 0) {
3293                 kfree_skb(ack_skb);
3294                 return ERR_PTR(-ENOMEM);
3295         }
3296
3297         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3298
3299         *cookie = ieee80211_mgmt_tx_cookie(local);
3300         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3301
3302         return ack_skb;
3303 }
3304
3305 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3306                              struct cfg80211_mgmt_tx_params *params,
3307                              u64 *cookie)
3308 {
3309         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3310         struct ieee80211_local *local = sdata->local;
3311         struct sk_buff *skb, *ack_skb;
3312         struct sta_info *sta;
3313         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3314         bool need_offchan = false;
3315         u32 flags;
3316         int ret;
3317         u8 *data;
3318
3319         if (params->dont_wait_for_ack)
3320                 flags = IEEE80211_TX_CTL_NO_ACK;
3321         else
3322                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3323                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3324
3325         if (params->no_cck)
3326                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3327
3328         switch (sdata->vif.type) {
3329         case NL80211_IFTYPE_ADHOC:
3330                 if (!sdata->vif.bss_conf.ibss_joined)
3331                         need_offchan = true;
3332                 /* fall through */
3333 #ifdef CONFIG_MAC80211_MESH
3334         case NL80211_IFTYPE_MESH_POINT:
3335                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3336                     !sdata->u.mesh.mesh_id_len)
3337                         need_offchan = true;
3338                 /* fall through */
3339 #endif
3340         case NL80211_IFTYPE_AP:
3341         case NL80211_IFTYPE_AP_VLAN:
3342         case NL80211_IFTYPE_P2P_GO:
3343                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3344                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3345                     !rcu_access_pointer(sdata->bss->beacon))
3346                         need_offchan = true;
3347                 if (!ieee80211_is_action(mgmt->frame_control) ||
3348                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3349                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3350                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3351                         break;
3352                 rcu_read_lock();
3353                 sta = sta_info_get(sdata, mgmt->da);
3354                 rcu_read_unlock();
3355                 if (!sta)
3356                         return -ENOLINK;
3357                 break;
3358         case NL80211_IFTYPE_STATION:
3359         case NL80211_IFTYPE_P2P_CLIENT:
3360                 sdata_lock(sdata);
3361                 if (!sdata->u.mgd.associated ||
3362                     (params->offchan && params->wait &&
3363                      local->ops->remain_on_channel &&
3364                      memcmp(sdata->u.mgd.associated->bssid,
3365                             mgmt->bssid, ETH_ALEN)))
3366                         need_offchan = true;
3367                 sdata_unlock(sdata);
3368                 break;
3369         case NL80211_IFTYPE_P2P_DEVICE:
3370                 need_offchan = true;
3371                 break;
3372         default:
3373                 return -EOPNOTSUPP;
3374         }
3375
3376         /* configurations requiring offchan cannot work if no channel has been
3377          * specified
3378          */
3379         if (need_offchan && !params->chan)
3380                 return -EINVAL;
3381
3382         mutex_lock(&local->mtx);
3383
3384         /* Check if the operating channel is the requested channel */
3385         if (!need_offchan) {
3386                 struct ieee80211_chanctx_conf *chanctx_conf;
3387
3388                 rcu_read_lock();
3389                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3390
3391                 if (chanctx_conf) {
3392                         need_offchan = params->chan &&
3393                                        (params->chan !=
3394                                         chanctx_conf->def.chan);
3395                 } else if (!params->chan) {
3396                         ret = -EINVAL;
3397                         rcu_read_unlock();
3398                         goto out_unlock;
3399                 } else {
3400                         need_offchan = true;
3401                 }
3402                 rcu_read_unlock();
3403         }
3404
3405         if (need_offchan && !params->offchan) {
3406                 ret = -EBUSY;
3407                 goto out_unlock;
3408         }
3409
3410         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3411         if (!skb) {
3412                 ret = -ENOMEM;
3413                 goto out_unlock;
3414         }
3415         skb_reserve(skb, local->hw.extra_tx_headroom);
3416
3417         data = skb_put(skb, params->len);
3418         memcpy(data, params->buf, params->len);
3419
3420         /* Update CSA counters */
3421         if (sdata->vif.csa_active &&
3422             (sdata->vif.type == NL80211_IFTYPE_AP ||
3423              sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3424              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3425             params->n_csa_offsets) {
3426                 int i;
3427                 struct beacon_data *beacon = NULL;
3428
3429                 rcu_read_lock();
3430
3431                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3432                         beacon = rcu_dereference(sdata->u.ap.beacon);
3433                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3434                         beacon = rcu_dereference(sdata->u.ibss.presp);
3435                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3436                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3437
3438                 if (beacon)
3439                         for (i = 0; i < params->n_csa_offsets; i++)
3440                                 data[params->csa_offsets[i]] =
3441                                         beacon->csa_current_counter;
3442
3443                 rcu_read_unlock();
3444         }
3445
3446         IEEE80211_SKB_CB(skb)->flags = flags;
3447
3448         skb->dev = sdata->dev;
3449
3450         if (!params->dont_wait_for_ack) {
3451                 /* make a copy to preserve the frame contents
3452                  * in case of encryption.
3453                  */
3454                 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3455                                                  GFP_KERNEL);
3456                 if (IS_ERR(ack_skb)) {
3457                         ret = PTR_ERR(ack_skb);
3458                         kfree_skb(skb);
3459                         goto out_unlock;
3460                 }
3461         } else {
3462                 /* Assign a dummy non-zero cookie, it's not sent to
3463                  * userspace in this case but we rely on its value
3464                  * internally in the need_offchan case to distinguish
3465                  * mgmt-tx from remain-on-channel.
3466                  */
3467                 *cookie = 0xffffffff;
3468         }
3469
3470         if (!need_offchan) {
3471                 ieee80211_tx_skb(sdata, skb);
3472                 ret = 0;
3473                 goto out_unlock;
3474         }
3475
3476         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3477                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3478         if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3479                 IEEE80211_SKB_CB(skb)->hw_queue =
3480                         local->hw.offchannel_tx_hw_queue;
3481
3482         /* This will handle all kinds of coalescing and immediate TX */
3483         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3484                                        params->wait, cookie, skb,
3485                                        IEEE80211_ROC_TYPE_MGMT_TX);
3486         if (ret)
3487                 kfree_skb(skb);
3488  out_unlock:
3489         mutex_unlock(&local->mtx);
3490         return ret;
3491 }
3492
3493 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3494                                          struct wireless_dev *wdev,
3495                                          u64 cookie)
3496 {
3497         struct ieee80211_local *local = wiphy_priv(wiphy);
3498
3499         return ieee80211_cancel_roc(local, cookie, true);
3500 }
3501
3502 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3503                                           struct wireless_dev *wdev,
3504                                           u16 frame_type, bool reg)
3505 {
3506         struct ieee80211_local *local = wiphy_priv(wiphy);
3507         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3508
3509         switch (frame_type) {
3510         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3511                 if (reg) {
3512                         local->probe_req_reg++;
3513                         sdata->vif.probe_req_reg++;
3514                 } else {
3515                         if (local->probe_req_reg)
3516                                 local->probe_req_reg--;
3517
3518                         if (sdata->vif.probe_req_reg)
3519                                 sdata->vif.probe_req_reg--;
3520                 }
3521
3522                 if (!local->open_count)
3523                         break;
3524
3525                 if (sdata->vif.probe_req_reg == 1)
3526                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3527                                                 FIF_PROBE_REQ);
3528                 else if (sdata->vif.probe_req_reg == 0)
3529                         drv_config_iface_filter(local, sdata, 0,
3530                                                 FIF_PROBE_REQ);
3531
3532                 ieee80211_configure_filter(local);
3533                 break;
3534         default:
3535                 break;
3536         }
3537 }
3538
3539 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3540 {
3541         struct ieee80211_local *local = wiphy_priv(wiphy);
3542
3543         if (local->started)
3544                 return -EOPNOTSUPP;
3545
3546         return drv_set_antenna(local, tx_ant, rx_ant);
3547 }
3548
3549 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3550 {
3551         struct ieee80211_local *local = wiphy_priv(wiphy);
3552
3553         return drv_get_antenna(local, tx_ant, rx_ant);
3554 }
3555
3556 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3557                                     struct net_device *dev,
3558                                     struct cfg80211_gtk_rekey_data *data)
3559 {
3560         struct ieee80211_local *local = wiphy_priv(wiphy);
3561         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3562
3563         if (!local->ops->set_rekey_data)
3564                 return -EOPNOTSUPP;
3565
3566         drv_set_rekey_data(local, sdata, data);
3567
3568         return 0;
3569 }
3570
3571 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3572                                   const u8 *peer, u64 *cookie)
3573 {
3574         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3575         struct ieee80211_local *local = sdata->local;
3576         struct ieee80211_qos_hdr *nullfunc;
3577         struct sk_buff *skb, *ack_skb;
3578         int size = sizeof(*nullfunc);
3579         __le16 fc;
3580         bool qos;
3581         struct ieee80211_tx_info *info;
3582         struct sta_info *sta;
3583         struct ieee80211_chanctx_conf *chanctx_conf;
3584         enum ieee80211_band band;
3585         int ret;
3586
3587         /* the lock is needed to assign the cookie later */
3588         mutex_lock(&local->mtx);
3589
3590         rcu_read_lock();
3591         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3592         if (WARN_ON(!chanctx_conf)) {
3593                 ret = -EINVAL;
3594                 goto unlock;
3595         }
3596         band = chanctx_conf->def.chan->band;
3597         sta = sta_info_get_bss(sdata, peer);
3598         if (sta) {
3599                 qos = sta->sta.wme;
3600         } else {
3601                 ret = -ENOLINK;
3602                 goto unlock;
3603         }
3604
3605         if (qos) {
3606                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3607                                  IEEE80211_STYPE_QOS_NULLFUNC |
3608                                  IEEE80211_FCTL_FROMDS);
3609         } else {
3610                 size -= 2;
3611                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3612                                  IEEE80211_STYPE_NULLFUNC |
3613                                  IEEE80211_FCTL_FROMDS);
3614         }
3615
3616         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3617         if (!skb) {
3618                 ret = -ENOMEM;
3619                 goto unlock;
3620         }
3621
3622         skb->dev = dev;
3623
3624         skb_reserve(skb, local->hw.extra_tx_headroom);
3625
3626         nullfunc = (void *) skb_put(skb, size);
3627         nullfunc->frame_control = fc;
3628         nullfunc->duration_id = 0;
3629         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3630         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3631         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3632         nullfunc->seq_ctrl = 0;
3633
3634         info = IEEE80211_SKB_CB(skb);
3635
3636         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3637                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3638         info->band = band;
3639
3640         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3641         skb->priority = 7;
3642         if (qos)
3643                 nullfunc->qos_ctrl = cpu_to_le16(7);
3644
3645         ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3646         if (IS_ERR(ack_skb)) {
3647                 kfree_skb(skb);
3648                 ret = PTR_ERR(ack_skb);
3649                 goto unlock;
3650         }
3651
3652         local_bh_disable();
3653         ieee80211_xmit(sdata, sta, skb);
3654         local_bh_enable();
3655
3656         ret = 0;
3657 unlock:
3658         rcu_read_unlock();
3659         mutex_unlock(&local->mtx);
3660
3661         return ret;
3662 }
3663
3664 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3665                                      struct wireless_dev *wdev,
3666                                      struct cfg80211_chan_def *chandef)
3667 {
3668         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3669         struct ieee80211_local *local = wiphy_priv(wiphy);
3670         struct ieee80211_chanctx_conf *chanctx_conf;
3671         int ret = -ENODATA;
3672
3673         rcu_read_lock();
3674         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3675         if (chanctx_conf) {
3676                 *chandef = sdata->vif.bss_conf.chandef;
3677                 ret = 0;
3678         } else if (local->open_count > 0 &&
3679                    local->open_count == local->monitors &&
3680                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3681                 if (local->use_chanctx)
3682                         *chandef = local->monitor_chandef;
3683                 else
3684                         *chandef = local->_oper_chandef;
3685                 ret = 0;
3686         }
3687         rcu_read_unlock();
3688
3689         return ret;
3690 }
3691
3692 #ifdef CONFIG_PM
3693 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3694 {
3695         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3696 }
3697 #endif
3698
3699 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3700                                  struct net_device *dev,
3701                                  struct cfg80211_qos_map *qos_map)
3702 {
3703         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3704         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3705
3706         if (qos_map) {
3707                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3708                 if (!new_qos_map)
3709                         return -ENOMEM;
3710                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3711         } else {
3712                 /* A NULL qos_map was passed to disable QoS mapping */
3713                 new_qos_map = NULL;
3714         }
3715
3716         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3717         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3718         if (old_qos_map)
3719                 kfree_rcu(old_qos_map, rcu_head);
3720
3721         return 0;
3722 }
3723
3724 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3725                                       struct net_device *dev,
3726                                       struct cfg80211_chan_def *chandef)
3727 {
3728         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3729         int ret;
3730         u32 changed = 0;
3731
3732         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3733         if (ret == 0)
3734                 ieee80211_bss_info_change_notify(sdata, changed);
3735
3736         return ret;
3737 }
3738
3739 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3740                                u8 tsid, const u8 *peer, u8 up,
3741                                u16 admitted_time)
3742 {
3743         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3744         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3745         int ac = ieee802_1d_to_ac[up];
3746
3747         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3748                 return -EOPNOTSUPP;
3749
3750         if (!(sdata->wmm_acm & BIT(up)))
3751                 return -EINVAL;
3752
3753         if (ifmgd->tx_tspec[ac].admitted_time)
3754                 return -EBUSY;
3755
3756         if (admitted_time) {
3757                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3758                 ifmgd->tx_tspec[ac].tsid = tsid;
3759                 ifmgd->tx_tspec[ac].up = up;
3760         }
3761
3762         return 0;
3763 }
3764
3765 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3766                                u8 tsid, const u8 *peer)
3767 {
3768         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3769         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3770         struct ieee80211_local *local = wiphy_priv(wiphy);
3771         int ac;
3772
3773         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3774                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3775
3776                 /* skip unused entries */
3777                 if (!tx_tspec->admitted_time)
3778                         continue;
3779
3780                 if (tx_tspec->tsid != tsid)
3781                         continue;
3782
3783                 /* due to this new packets will be reassigned to non-ACM ACs */
3784                 tx_tspec->up = -1;
3785
3786                 /* Make sure that all packets have been sent to avoid to
3787                  * restore the QoS params on packets that are still on the
3788                  * queues.
3789                  */
3790                 synchronize_net();
3791                 ieee80211_flush_queues(local, sdata, false);
3792
3793                 /* restore the normal QoS parameters
3794                  * (unconditionally to avoid races)
3795                  */
3796                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3797                 tx_tspec->downgraded = false;
3798                 ieee80211_sta_handle_tspec_ac_params(sdata);
3799
3800                 /* finally clear all the data */
3801                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3802
3803                 return 0;
3804         }
3805
3806         return -ENOENT;
3807 }
3808
3809 const struct cfg80211_ops mac80211_config_ops = {
3810         .add_virtual_intf = ieee80211_add_iface,
3811         .del_virtual_intf = ieee80211_del_iface,
3812         .change_virtual_intf = ieee80211_change_iface,
3813         .start_p2p_device = ieee80211_start_p2p_device,
3814         .stop_p2p_device = ieee80211_stop_p2p_device,
3815         .add_key = ieee80211_add_key,
3816         .del_key = ieee80211_del_key,
3817         .get_key = ieee80211_get_key,
3818         .set_default_key = ieee80211_config_default_key,
3819         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3820         .start_ap = ieee80211_start_ap,
3821         .change_beacon = ieee80211_change_beacon,
3822         .stop_ap = ieee80211_stop_ap,
3823         .add_station = ieee80211_add_station,
3824         .del_station = ieee80211_del_station,
3825         .change_station = ieee80211_change_station,
3826         .get_station = ieee80211_get_station,
3827         .dump_station = ieee80211_dump_station,
3828         .dump_survey = ieee80211_dump_survey,
3829 #ifdef CONFIG_MAC80211_MESH
3830         .add_mpath = ieee80211_add_mpath,
3831         .del_mpath = ieee80211_del_mpath,
3832         .change_mpath = ieee80211_change_mpath,
3833         .get_mpath = ieee80211_get_mpath,
3834         .dump_mpath = ieee80211_dump_mpath,
3835         .get_mpp = ieee80211_get_mpp,
3836         .dump_mpp = ieee80211_dump_mpp,
3837         .update_mesh_config = ieee80211_update_mesh_config,
3838         .get_mesh_config = ieee80211_get_mesh_config,
3839         .join_mesh = ieee80211_join_mesh,
3840         .leave_mesh = ieee80211_leave_mesh,
3841 #endif
3842         .join_ocb = ieee80211_join_ocb,
3843         .leave_ocb = ieee80211_leave_ocb,
3844         .change_bss = ieee80211_change_bss,
3845         .set_txq_params = ieee80211_set_txq_params,
3846         .set_monitor_channel = ieee80211_set_monitor_channel,
3847         .suspend = ieee80211_suspend,
3848         .resume = ieee80211_resume,
3849         .scan = ieee80211_scan,
3850         .abort_scan = ieee80211_abort_scan,
3851         .sched_scan_start = ieee80211_sched_scan_start,
3852         .sched_scan_stop = ieee80211_sched_scan_stop,
3853         .auth = ieee80211_auth,
3854         .assoc = ieee80211_assoc,
3855         .deauth = ieee80211_deauth,
3856         .disassoc = ieee80211_disassoc,
3857         .join_ibss = ieee80211_join_ibss,
3858         .leave_ibss = ieee80211_leave_ibss,
3859         .set_mcast_rate = ieee80211_set_mcast_rate,
3860         .set_wiphy_params = ieee80211_set_wiphy_params,
3861         .set_tx_power = ieee80211_set_tx_power,
3862         .get_tx_power = ieee80211_get_tx_power,
3863         .set_wds_peer = ieee80211_set_wds_peer,
3864         .rfkill_poll = ieee80211_rfkill_poll,
3865         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3866         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3867         .set_power_mgmt = ieee80211_set_power_mgmt,
3868         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3869         .remain_on_channel = ieee80211_remain_on_channel,
3870         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3871         .mgmt_tx = ieee80211_mgmt_tx,
3872         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3873         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3874         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3875         .set_antenna = ieee80211_set_antenna,
3876         .get_antenna = ieee80211_get_antenna,
3877         .set_rekey_data = ieee80211_set_rekey_data,
3878         .tdls_oper = ieee80211_tdls_oper,
3879         .tdls_mgmt = ieee80211_tdls_mgmt,
3880         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3881         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3882         .probe_client = ieee80211_probe_client,
3883         .set_noack_map = ieee80211_set_noack_map,
3884 #ifdef CONFIG_PM
3885         .set_wakeup = ieee80211_set_wakeup,
3886 #endif
3887         .get_channel = ieee80211_cfg_get_channel,
3888         .start_radar_detection = ieee80211_start_radar_detection,
3889         .channel_switch = ieee80211_channel_switch,
3890         .set_qos_map = ieee80211_set_qos_map,
3891         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3892         .add_tx_ts = ieee80211_add_tx_ts,
3893         .del_tx_ts = ieee80211_del_tx_ts,
3894 };