net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <net/cfg80211.h>
  16 #include "ieee80211_i.h"
  17 #include "driver-ops.h"
  18 #include "cfg.h"
  19 #include "rate.h"
  20 #include "mesh.h"
  21
  22 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                               enum nl80211_iftype type,
  24                                               u32 *flags,
  25                                               struct vif_params *params)
  26 {
  27         struct ieee80211_local *local = wiphy_priv(wiphy);
  28         struct net_device *dev;
  29         struct ieee80211_sub_if_data *sdata;
  30         int err;
  31
  32         err = ieee80211_if_add(local, name, &dev, type, params);
  33         if (err)
  34                 return ERR_PTR(err);
  35
  36         if (type == NL80211_IFTYPE_MONITOR && flags) {
  37                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  38                 sdata->u.mntr_flags = *flags;
  39         }
  40
  41         return dev;
  42 }
  43
  44 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  45 {
  46         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  47
  48         return 0;
  49 }
  50
  51 static int ieee80211_change_iface(struct wiphy *wiphy,
  52                                   struct net_device *dev,
  53                                   enum nl80211_iftype type, u32 *flags,
  54                                   struct vif_params *params)
  55 {
  56         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  57         int ret;
  58
  59         ret = ieee80211_if_change_type(sdata, type);
  60         if (ret)
  61                 return ret;
  62
  63         if (type == NL80211_IFTYPE_AP_VLAN &&
  64             params && params->use_4addr == 0)
  65                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
  66         else if (type == NL80211_IFTYPE_STATION &&
  67                  params && params->use_4addr >= 0)
  68                 sdata->u.mgd.use_4addr = params->use_4addr;
  69
  70         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  71                 struct ieee80211_local *local = sdata->local;
  72
  73                 if (ieee80211_sdata_running(sdata)) {
  74                         /*
  75                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  76                          * changed while the interface is up.
  77                          * Else we would need to add a lot of cruft
  78                          * to update everything:
  79                          *      cooked_mntrs, monitor and all fif_* counters
  80                          *      reconfigure hardware
  81                          */
  82                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  83                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  84                                 return -EBUSY;
  85
  86                         ieee80211_adjust_monitor_flags(sdata, -1);
  87                         sdata->u.mntr_flags = *flags;
  88                         ieee80211_adjust_monitor_flags(sdata, 1);
  89
  90                         ieee80211_configure_filter(local);
  91                 } else {
  92                         /*
  93                          * Because the interface is down, ieee80211_do_stop
  94                          * and ieee80211_do_open take care of "everything"
  95                          * mentioned in the comment above.
  96                          */
  97                         sdata->u.mntr_flags = *flags;
  98                 }
  99         }
 100
 101         return 0;
 102 }
 103
 104 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 105                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 106                              struct key_params *params)
 107 {
 108         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 109         struct sta_info *sta = NULL;
 110         struct ieee80211_key *key;
 111         int err;
 112
 113         if (!ieee80211_sdata_running(sdata))
 114                 return -ENETDOWN;
 115
 116         /* reject WEP and TKIP keys if WEP failed to initialize */
 117         switch (params->cipher) {
 118         case WLAN_CIPHER_SUITE_WEP40:
 119         case WLAN_CIPHER_SUITE_TKIP:
 120         case WLAN_CIPHER_SUITE_WEP104:
 121                 if (IS_ERR(sdata->local->wep_tx_tfm))
 122                         return -EINVAL;
 123                 break;
 124         default:
 125                 break;
 126         }
 127
 128         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 129                                   params->key, params->seq_len, params->seq);
 130         if (IS_ERR(key))
 131                 return PTR_ERR(key);
 132
 133         if (pairwise)
 134                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 135
 136         mutex_lock(&sdata->local->sta_mtx);
 137
 138         if (mac_addr) {
 139                 if (ieee80211_vif_is_mesh(&sdata->vif))
 140                         sta = sta_info_get(sdata, mac_addr);
 141                 else
 142                         sta = sta_info_get_bss(sdata, mac_addr);
 143                 if (!sta) {
 144                         ieee80211_key_free(sdata->local, key);
 145                         err = -ENOENT;
 146                         goto out_unlock;
 147                 }
 148         }
 149
 150         err = ieee80211_key_link(key, sdata, sta);
 151         if (err)
 152                 ieee80211_key_free(sdata->local, key);
 153
 154  out_unlock:
 155         mutex_unlock(&sdata->local->sta_mtx);
 156
 157         return err;
 158 }
 159
 160 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 161                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 162 {
 163         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 164         struct ieee80211_local *local = sdata->local;
 165         struct sta_info *sta;
 166         struct ieee80211_key *key = NULL;
 167         int ret;
 168
 169         mutex_lock(&local->sta_mtx);
 170         mutex_lock(&local->key_mtx);
 171
 172         if (mac_addr) {
 173                 ret = -ENOENT;
 174
 175                 sta = sta_info_get_bss(sdata, mac_addr);
 176                 if (!sta)
 177                         goto out_unlock;
 178
 179                 if (pairwise)
 180                         key = key_mtx_dereference(local, sta->ptk);
 181                 else
 182                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 183         } else
 184                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 185
 186         if (!key) {
 187                 ret = -ENOENT;
 188                 goto out_unlock;
 189         }
 190
 191         __ieee80211_key_free(key);
 192
 193         ret = 0;
 194  out_unlock:
 195         mutex_unlock(&local->key_mtx);
 196         mutex_unlock(&local->sta_mtx);
 197
 198         return ret;
 199 }
 200
 201 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 202                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 203                              void *cookie,
 204                              void (*callback)(void *cookie,
 205                                               struct key_params *params))
 206 {
 207         struct ieee80211_sub_if_data *sdata;
 208         struct sta_info *sta = NULL;
 209         u8 seq[6] = {0};
 210         struct key_params params;
 211         struct ieee80211_key *key = NULL;
 212         u64 pn64;
 213         u32 iv32;
 214         u16 iv16;
 215         int err = -ENOENT;
 216
 217         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 218
 219         rcu_read_lock();
 220
 221         if (mac_addr) {
 222                 sta = sta_info_get_bss(sdata, mac_addr);
 223                 if (!sta)
 224                         goto out;
 225
 226                 if (pairwise)
 227                         key = rcu_dereference(sta->ptk);
 228                 else if (key_idx < NUM_DEFAULT_KEYS)
 229                         key = rcu_dereference(sta->gtk[key_idx]);
 230         } else
 231                 key = rcu_dereference(sdata->keys[key_idx]);
 232
 233         if (!key)
 234                 goto out;
 235
 236         memset(&params, 0, sizeof(params));
 237
 238         params.cipher = key->conf.cipher;
 239
 240         switch (key->conf.cipher) {
 241         case WLAN_CIPHER_SUITE_TKIP:
 242                 iv32 = key->u.tkip.tx.iv32;
 243                 iv16 = key->u.tkip.tx.iv16;
 244
 245                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 246                         drv_get_tkip_seq(sdata->local,
 247                                          key->conf.hw_key_idx,
 248                                          &iv32, &iv16);
 249
 250                 seq[0] = iv16 & 0xff;
 251                 seq[1] = (iv16 >> 8) & 0xff;
 252                 seq[2] = iv32 & 0xff;
 253                 seq[3] = (iv32 >> 8) & 0xff;
 254                 seq[4] = (iv32 >> 16) & 0xff;
 255                 seq[5] = (iv32 >> 24) & 0xff;
 256                 params.seq = seq;
 257                 params.seq_len = 6;
 258                 break;
 259         case WLAN_CIPHER_SUITE_CCMP:
 260                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 261                 seq[0] = pn64;
 262                 seq[1] = pn64 >> 8;
 263                 seq[2] = pn64 >> 16;
 264                 seq[3] = pn64 >> 24;
 265                 seq[4] = pn64 >> 32;
 266                 seq[5] = pn64 >> 40;
 267                 params.seq = seq;
 268                 params.seq_len = 6;
 269                 break;
 270         case WLAN_CIPHER_SUITE_AES_CMAC:
 271                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 272                 seq[0] = pn64;
 273                 seq[1] = pn64 >> 8;
 274                 seq[2] = pn64 >> 16;
 275                 seq[3] = pn64 >> 24;
 276                 seq[4] = pn64 >> 32;
 277                 seq[5] = pn64 >> 40;
 278                 params.seq = seq;
 279                 params.seq_len = 6;
 280                 break;
 281         }
 282
 283         params.key = key->conf.key;
 284         params.key_len = key->conf.keylen;
 285
 286         callback(cookie, &params);
 287         err = 0;
 288
 289  out:
 290         rcu_read_unlock();
 291         return err;
 292 }
 293
 294 static int ieee80211_config_default_key(struct wiphy *wiphy,
 295                                         struct net_device *dev,
 296                                         u8 key_idx, bool uni,
 297                                         bool multi)
 298 {
 299         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 300
 301         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 302
 303         return 0;
 304 }
 305
 306 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 307                                              struct net_device *dev,
 308                                              u8 key_idx)
 309 {
 310         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 311
 312         ieee80211_set_default_mgmt_key(sdata, key_idx);
 313
 314         return 0;
 315 }
 316
 317 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 318 {
 319         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 320                 struct ieee80211_supported_band *sband;
 321                 sband = sta->local->hw.wiphy->bands[
 322                                 sta->local->hw.conf.channel->band];
 323                 rate->legacy = sband->bitrates[idx].bitrate;
 324         } else
 325                 rate->mcs = idx;
 326 }
 327
 328 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 329 {
 330         struct ieee80211_sub_if_data *sdata = sta->sdata;
 331         struct timespec uptime;
 332
 333         sinfo->generation = sdata->local->sta_generation;
 334
 335         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 336                         STATION_INFO_RX_BYTES |
 337                         STATION_INFO_TX_BYTES |
 338                         STATION_INFO_RX_PACKETS |
 339                         STATION_INFO_TX_PACKETS |
 340                         STATION_INFO_TX_RETRIES |
 341                         STATION_INFO_TX_FAILED |
 342                         STATION_INFO_TX_BITRATE |
 343                         STATION_INFO_RX_BITRATE |
 344                         STATION_INFO_RX_DROP_MISC |
 345                         STATION_INFO_BSS_PARAM |
 346                         STATION_INFO_CONNECTED_TIME;
 347
 348         do_posix_clock_monotonic_gettime(&uptime);
 349         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 350
 351         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 352         sinfo->rx_bytes = sta->rx_bytes;
 353         sinfo->tx_bytes = sta->tx_bytes;
 354         sinfo->rx_packets = sta->rx_packets;
 355         sinfo->tx_packets = sta->tx_packets;
 356         sinfo->tx_retries = sta->tx_retry_count;
 357         sinfo->tx_failed = sta->tx_retry_failed;
 358         sinfo->rx_dropped_misc = sta->rx_dropped;
 359
 360         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 361             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 362                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 363                 sinfo->signal = (s8)sta->last_signal;
 364                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 365         }
 366
 367         sinfo->txrate.flags = 0;
 368         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 369                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 370         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 371                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 372         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 373                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 374         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 375
 376         sinfo->rxrate.flags = 0;
 377         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 378                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 379         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 380                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 381         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 382                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 383         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 384
 385         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 386 #ifdef CONFIG_MAC80211_MESH
 387                 sinfo->filled |= STATION_INFO_LLID |
 388                                  STATION_INFO_PLID |
 389                                  STATION_INFO_PLINK_STATE;
 390
 391                 sinfo->llid = le16_to_cpu(sta->llid);
 392                 sinfo->plid = le16_to_cpu(sta->plid);
 393                 sinfo->plink_state = sta->plink_state;
 394 #endif
 395         }
 396
 397         sinfo->bss_param.flags = 0;
 398         if (sdata->vif.bss_conf.use_cts_prot)
 399                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 400         if (sdata->vif.bss_conf.use_short_preamble)
 401                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 402         if (sdata->vif.bss_conf.use_short_slot)
 403                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 404         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 405         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 406 }
 407
 408
 409 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 410                                  int idx, u8 *mac, struct station_info *sinfo)
 411 {
 412         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 413         struct sta_info *sta;
 414         int ret = -ENOENT;
 415
 416         rcu_read_lock();
 417
 418         sta = sta_info_get_by_idx(sdata, idx);
 419         if (sta) {
 420                 ret = 0;
 421                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 422                 sta_set_sinfo(sta, sinfo);
 423         }
 424
 425         rcu_read_unlock();
 426
 427         return ret;
 428 }
 429
 430 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 431                                  int idx, struct survey_info *survey)
 432 {
 433         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 434
 435         return drv_get_survey(local, idx, survey);
 436 }
 437
 438 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 439                                  u8 *mac, struct station_info *sinfo)
 440 {
 441         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 442         struct sta_info *sta;
 443         int ret = -ENOENT;
 444
 445         rcu_read_lock();
 446
 447         sta = sta_info_get_bss(sdata, mac);
 448         if (sta) {
 449                 ret = 0;
 450                 sta_set_sinfo(sta, sinfo);
 451         }
 452
 453         rcu_read_unlock();
 454
 455         return ret;
 456 }
 457
 458 /*
 459  * This handles both adding a beacon and setting new beacon info
 460  */
 461 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 462                                    struct beacon_parameters *params)
 463 {
 464         struct beacon_data *new, *old;
 465         int new_head_len, new_tail_len;
 466         int size;
 467         int err = -EINVAL;
 468
 469         old = rtnl_dereference(sdata->u.ap.beacon);
 470
 471         /* head must not be zero-length */
 472         if (params->head && !params->head_len)
 473                 return -EINVAL;
 474
 475         /*
 476          * This is a kludge. beacon interval should really be part
 477          * of the beacon information.
 478          */
 479         if (params->interval &&
 480             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 481                 sdata->vif.bss_conf.beacon_int = params->interval;
 482                 ieee80211_bss_info_change_notify(sdata,
 483                                                  BSS_CHANGED_BEACON_INT);
 484         }
 485
 486         /* Need to have a beacon head if we don't have one yet */
 487         if (!params->head && !old)
 488                 return err;
 489
 490         /* sorry, no way to start beaconing without dtim period */
 491         if (!params->dtim_period && !old)
 492                 return err;
 493
 494         /* new or old head? */
 495         if (params->head)
 496                 new_head_len = params->head_len;
 497         else
 498                 new_head_len = old->head_len;
 499
 500         /* new or old tail? */
 501         if (params->tail || !old)
 502                 /* params->tail_len will be zero for !params->tail */
 503                 new_tail_len = params->tail_len;
 504         else
 505                 new_tail_len = old->tail_len;
 506
 507         size = sizeof(*new) + new_head_len + new_tail_len;
 508
 509         new = kzalloc(size, GFP_KERNEL);
 510         if (!new)
 511                 return -ENOMEM;
 512
 513         /* start filling the new info now */
 514
 515         /* new or old dtim period? */
 516         if (params->dtim_period)
 517                 new->dtim_period = params->dtim_period;
 518         else
 519                 new->dtim_period = old->dtim_period;
 520
 521         /*
 522          * pointers go into the block we allocated,
 523          * memory is | beacon_data | head | tail |
 524          */
 525         new->head = ((u8 *) new) + sizeof(*new);
 526         new->tail = new->head + new_head_len;
 527         new->head_len = new_head_len;
 528         new->tail_len = new_tail_len;
 529
 530         /* copy in head */
 531         if (params->head)
 532                 memcpy(new->head, params->head, new_head_len);
 533         else
 534                 memcpy(new->head, old->head, new_head_len);
 535
 536         /* copy in optional tail */
 537         if (params->tail)
 538                 memcpy(new->tail, params->tail, new_tail_len);
 539         else
 540                 if (old)
 541                         memcpy(new->tail, old->tail, new_tail_len);
 542
 543         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 544
 545         rcu_assign_pointer(sdata->u.ap.beacon, new);
 546
 547         synchronize_rcu();
 548
 549         kfree(old);
 550
 551         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 552                                                 BSS_CHANGED_BEACON);
 553         return 0;
 554 }
 555
 556 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 557                                 struct beacon_parameters *params)
 558 {
 559         struct ieee80211_sub_if_data *sdata;
 560         struct beacon_data *old;
 561
 562         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 563
 564         old = rtnl_dereference(sdata->u.ap.beacon);
 565         if (old)
 566                 return -EALREADY;
 567
 568         return ieee80211_config_beacon(sdata, params);
 569 }
 570
 571 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 572                                 struct beacon_parameters *params)
 573 {
 574         struct ieee80211_sub_if_data *sdata;
 575         struct beacon_data *old;
 576
 577         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 578
 579         old = rtnl_dereference(sdata->u.ap.beacon);
 580         if (!old)
 581                 return -ENOENT;
 582
 583         return ieee80211_config_beacon(sdata, params);
 584 }
 585
 586 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 587 {
 588         struct ieee80211_sub_if_data *sdata;
 589         struct beacon_data *old;
 590
 591         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 592
 593         old = rtnl_dereference(sdata->u.ap.beacon);
 594         if (!old)
 595                 return -ENOENT;
 596
 597         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 598         synchronize_rcu();
 599         kfree(old);
 600
 601         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 602         return 0;
 603 }
 604
 605 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 606 struct iapp_layer2_update {
 607         u8 da[ETH_ALEN];        /* broadcast */
 608         u8 sa[ETH_ALEN];        /* STA addr */
 609         __be16 len;             /* 6 */
 610         u8 dsap;                /* 0 */
 611         u8 ssap;                /* 0 */
 612         u8 control;
 613         u8 xid_info[3];
 614 } __packed;
 615
 616 static void ieee80211_send_layer2_update(struct sta_info *sta)
 617 {
 618         struct iapp_layer2_update *msg;
 619         struct sk_buff *skb;
 620
 621         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 622          * bridge devices */
 623
 624         skb = dev_alloc_skb(sizeof(*msg));
 625         if (!skb)
 626                 return;
 627         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 628
 629         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 630          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 631
 632         memset(msg->da, 0xff, ETH_ALEN);
 633         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 634         msg->len = htons(6);
 635         msg->dsap = 0;
 636         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 637         msg->control = 0xaf;    /* XID response lsb.1111F101.
 638                                  * F=0 (no poll command; unsolicited frame) */
 639         msg->xid_info[0] = 0x81;        /* XID format identifier */
 640         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 641         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 642
 643         skb->dev = sta->sdata->dev;
 644         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 645         memset(skb->cb, 0, sizeof(skb->cb));
 646         netif_rx_ni(skb);
 647 }
 648
 649 static void sta_apply_parameters(struct ieee80211_local *local,
 650                                  struct sta_info *sta,
 651                                  struct station_parameters *params)
 652 {
 653         unsigned long flags;
 654         u32 rates;
 655         int i, j;
 656         struct ieee80211_supported_band *sband;
 657         struct ieee80211_sub_if_data *sdata = sta->sdata;
 658         u32 mask, set;
 659
 660         sband = local->hw.wiphy->bands[local->oper_channel->band];
 661
 662         spin_lock_irqsave(&sta->flaglock, flags);
 663         mask = params->sta_flags_mask;
 664         set = params->sta_flags_set;
 665
 666         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 667                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 668                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 669                         sta->flags |= WLAN_STA_AUTHORIZED;
 670         }
 671
 672         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 673                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 674                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 675                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 676         }
 677
 678         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 679                 sta->flags &= ~WLAN_STA_WME;
 680                 sta->sta.wme = false;
 681                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 682                         sta->flags |= WLAN_STA_WME;
 683                         sta->sta.wme = true;
 684                 }
 685         }
 686
 687         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 688                 sta->flags &= ~WLAN_STA_MFP;
 689                 if (set & BIT(NL80211_STA_FLAG_MFP))
 690                         sta->flags |= WLAN_STA_MFP;
 691         }
 692
 693         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 694                 sta->flags &= ~WLAN_STA_AUTH;
 695                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 696                         sta->flags |= WLAN_STA_AUTH;
 697         }
 698         spin_unlock_irqrestore(&sta->flaglock, flags);
 699
 700         /*
 701          * cfg80211 validates this (1-2007) and allows setting the AID
 702          * only when creating a new station entry
 703          */
 704         if (params->aid)
 705                 sta->sta.aid = params->aid;
 706
 707         /*
 708          * FIXME: updating the following information is racy when this
 709          *        function is called from ieee80211_change_station().
 710          *        However, all this information should be static so
 711          *        maybe we should just reject attemps to change it.
 712          */
 713
 714         if (params->listen_interval >= 0)
 715                 sta->listen_interval = params->listen_interval;
 716
 717         if (params->supported_rates) {
 718                 rates = 0;
 719
 720                 for (i = 0; i < params->supported_rates_len; i++) {
 721                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 722                         for (j = 0; j < sband->n_bitrates; j++) {
 723                                 if (sband->bitrates[j].bitrate == rate)
 724                                         rates |= BIT(j);
 725                         }
 726                 }
 727                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 728         }
 729
 730         if (params->ht_capa)
 731                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 732                                                   params->ht_capa,
 733                                                   &sta->sta.ht_cap);
 734
 735         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 736 #ifdef CONFIG_MAC80211_MESH
 737                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 738                         switch (params->plink_state) {
 739                         case NL80211_PLINK_LISTEN:
 740                         case NL80211_PLINK_ESTAB:
 741                         case NL80211_PLINK_BLOCKED:
 742                                 sta->plink_state = params->plink_state;
 743                                 break;
 744                         default:
 745                                 /*  nothing  */
 746                                 break;
 747                         }
 748                 else
 749                         switch (params->plink_action) {
 750                         case PLINK_ACTION_OPEN:
 751                                 mesh_plink_open(sta);
 752                                 break;
 753                         case PLINK_ACTION_BLOCK:
 754                                 mesh_plink_block(sta);
 755                                 break;
 756                         }
 757 #endif
 758         }
 759 }
 760
 761 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 762                                  u8 *mac, struct station_parameters *params)
 763 {
 764         struct ieee80211_local *local = wiphy_priv(wiphy);
 765         struct sta_info *sta;
 766         struct ieee80211_sub_if_data *sdata;
 767         int err;
 768         int layer2_update;
 769
 770         if (params->vlan) {
 771                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 772
 773                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 774                     sdata->vif.type != NL80211_IFTYPE_AP)
 775                         return -EINVAL;
 776         } else
 777                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 778
 779         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 780                 return -EINVAL;
 781
 782         if (is_multicast_ether_addr(mac))
 783                 return -EINVAL;
 784
 785         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 786         if (!sta)
 787                 return -ENOMEM;
 788
 789         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 790
 791         sta_apply_parameters(local, sta, params);
 792
 793         rate_control_rate_init(sta);
 794
 795         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 796                 sdata->vif.type == NL80211_IFTYPE_AP;
 797
 798         err = sta_info_insert_rcu(sta);
 799         if (err) {
 800                 rcu_read_unlock();
 801                 return err;
 802         }
 803
 804         if (layer2_update)
 805                 ieee80211_send_layer2_update(sta);
 806
 807         rcu_read_unlock();
 808
 809         return 0;
 810 }
 811
 812 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 813                                  u8 *mac)
 814 {
 815         struct ieee80211_local *local = wiphy_priv(wiphy);
 816         struct ieee80211_sub_if_data *sdata;
 817
 818         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 819
 820         if (mac)
 821                 return sta_info_destroy_addr_bss(sdata, mac);
 822
 823         sta_info_flush(local, sdata);
 824         return 0;
 825 }
 826
 827 static int ieee80211_change_station(struct wiphy *wiphy,
 828                                     struct net_device *dev,
 829                                     u8 *mac,
 830                                     struct station_parameters *params)
 831 {
 832         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 833         struct ieee80211_local *local = wiphy_priv(wiphy);
 834         struct sta_info *sta;
 835         struct ieee80211_sub_if_data *vlansdata;
 836
 837         rcu_read_lock();
 838
 839         sta = sta_info_get_bss(sdata, mac);
 840         if (!sta) {
 841                 rcu_read_unlock();
 842                 return -ENOENT;
 843         }
 844
 845         if (params->vlan && params->vlan != sta->sdata->dev) {
 846                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 847
 848                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 849                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 850                         rcu_read_unlock();
 851                         return -EINVAL;
 852                 }
 853
 854                 if (params->vlan->ieee80211_ptr->use_4addr) {
 855                         if (vlansdata->u.vlan.sta) {
 856                                 rcu_read_unlock();
 857                                 return -EBUSY;
 858                         }
 859
 860                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 861                 }
 862
 863                 sta->sdata = vlansdata;
 864                 ieee80211_send_layer2_update(sta);
 865         }
 866
 867         sta_apply_parameters(local, sta, params);
 868
 869         rcu_read_unlock();
 870
 871         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 872             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
 873                 ieee80211_recalc_ps(local, -1);
 874
 875         return 0;
 876 }
 877
 878 #ifdef CONFIG_MAC80211_MESH
 879 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 880                                  u8 *dst, u8 *next_hop)
 881 {
 882         struct ieee80211_sub_if_data *sdata;
 883         struct mesh_path *mpath;
 884         struct sta_info *sta;
 885         int err;
 886
 887         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 888
 889         rcu_read_lock();
 890         sta = sta_info_get(sdata, next_hop);
 891         if (!sta) {
 892                 rcu_read_unlock();
 893                 return -ENOENT;
 894         }
 895
 896         err = mesh_path_add(dst, sdata);
 897         if (err) {
 898                 rcu_read_unlock();
 899                 return err;
 900         }
 901
 902         mpath = mesh_path_lookup(dst, sdata);
 903         if (!mpath) {
 904                 rcu_read_unlock();
 905                 return -ENXIO;
 906         }
 907         mesh_path_fix_nexthop(mpath, sta);
 908
 909         rcu_read_unlock();
 910         return 0;
 911 }
 912
 913 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 914                                  u8 *dst)
 915 {
 916         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 917
 918         if (dst)
 919                 return mesh_path_del(dst, sdata);
 920
 921         mesh_path_flush(sdata);
 922         return 0;
 923 }
 924
 925 static int ieee80211_change_mpath(struct wiphy *wiphy,
 926                                     struct net_device *dev,
 927                                     u8 *dst, u8 *next_hop)
 928 {
 929         struct ieee80211_sub_if_data *sdata;
 930         struct mesh_path *mpath;
 931         struct sta_info *sta;
 932
 933         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 934
 935         rcu_read_lock();
 936
 937         sta = sta_info_get(sdata, next_hop);
 938         if (!sta) {
 939                 rcu_read_unlock();
 940                 return -ENOENT;
 941         }
 942
 943         mpath = mesh_path_lookup(dst, sdata);
 944         if (!mpath) {
 945                 rcu_read_unlock();
 946                 return -ENOENT;
 947         }
 948
 949         mesh_path_fix_nexthop(mpath, sta);
 950
 951         rcu_read_unlock();
 952         return 0;
 953 }
 954
 955 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 956                             struct mpath_info *pinfo)
 957 {
 958         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
 959
 960         if (next_hop_sta)
 961                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
 962         else
 963                 memset(next_hop, 0, ETH_ALEN);
 964
 965         pinfo->generation = mesh_paths_generation;
 966
 967         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 968                         MPATH_INFO_SN |
 969                         MPATH_INFO_METRIC |
 970                         MPATH_INFO_EXPTIME |
 971                         MPATH_INFO_DISCOVERY_TIMEOUT |
 972                         MPATH_INFO_DISCOVERY_RETRIES |
 973                         MPATH_INFO_FLAGS;
 974
 975         pinfo->frame_qlen = mpath->frame_queue.qlen;
 976         pinfo->sn = mpath->sn;
 977         pinfo->metric = mpath->metric;
 978         if (time_before(jiffies, mpath->exp_time))
 979                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 980         pinfo->discovery_timeout =
 981                         jiffies_to_msecs(mpath->discovery_timeout);
 982         pinfo->discovery_retries = mpath->discovery_retries;
 983         pinfo->flags = 0;
 984         if (mpath->flags & MESH_PATH_ACTIVE)
 985                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 986         if (mpath->flags & MESH_PATH_RESOLVING)
 987                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 988         if (mpath->flags & MESH_PATH_SN_VALID)
 989                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 990         if (mpath->flags & MESH_PATH_FIXED)
 991                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 992         if (mpath->flags & MESH_PATH_RESOLVING)
 993                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 994
 995         pinfo->flags = mpath->flags;
 996 }
 997
 998 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 999                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1000
1001 {
1002         struct ieee80211_sub_if_data *sdata;
1003         struct mesh_path *mpath;
1004
1005         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1006
1007         rcu_read_lock();
1008         mpath = mesh_path_lookup(dst, sdata);
1009         if (!mpath) {
1010                 rcu_read_unlock();
1011                 return -ENOENT;
1012         }
1013         memcpy(dst, mpath->dst, ETH_ALEN);
1014         mpath_set_pinfo(mpath, next_hop, pinfo);
1015         rcu_read_unlock();
1016         return 0;
1017 }
1018
1019 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1020                                  int idx, u8 *dst, u8 *next_hop,
1021                                  struct mpath_info *pinfo)
1022 {
1023         struct ieee80211_sub_if_data *sdata;
1024         struct mesh_path *mpath;
1025
1026         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1027
1028         rcu_read_lock();
1029         mpath = mesh_path_lookup_by_idx(idx, sdata);
1030         if (!mpath) {
1031                 rcu_read_unlock();
1032                 return -ENOENT;
1033         }
1034         memcpy(dst, mpath->dst, ETH_ALEN);
1035         mpath_set_pinfo(mpath, next_hop, pinfo);
1036         rcu_read_unlock();
1037         return 0;
1038 }
1039
1040 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1041                                 struct net_device *dev,
1042                                 struct mesh_config *conf)
1043 {
1044         struct ieee80211_sub_if_data *sdata;
1045         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1046
1047         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1048         return 0;
1049 }
1050
1051 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1052 {
1053         return (mask >> (parm-1)) & 0x1;
1054 }
1055
1056 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1057                 const struct mesh_setup *setup)
1058 {
1059         u8 *new_ie;
1060         const u8 *old_ie;
1061
1062         /* allocate information elements */
1063         new_ie = NULL;
1064         old_ie = ifmsh->ie;
1065
1066         if (setup->ie_len) {
1067                 new_ie = kmemdup(setup->ie, setup->ie_len,
1068                                 GFP_KERNEL);
1069                 if (!new_ie)
1070                         return -ENOMEM;
1071         }
1072         ifmsh->ie_len = setup->ie_len;
1073         ifmsh->ie = new_ie;
1074         kfree(old_ie);
1075
1076         /* now copy the rest of the setup parameters */
1077         ifmsh->mesh_id_len = setup->mesh_id_len;
1078         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1079         ifmsh->mesh_pp_id = setup->path_sel_proto;
1080         ifmsh->mesh_pm_id = setup->path_metric;
1081         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1082         if (setup->is_authenticated)
1083                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1084         if (setup->is_secure)
1085                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1086
1087         return 0;
1088 }
1089
1090 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1091                                         struct net_device *dev, u32 mask,
1092                                         const struct mesh_config *nconf)
1093 {
1094         struct mesh_config *conf;
1095         struct ieee80211_sub_if_data *sdata;
1096         struct ieee80211_if_mesh *ifmsh;
1097
1098         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1099         ifmsh = &sdata->u.mesh;
1100
1101         /* Set the config options which we are interested in setting */
1102         conf = &(sdata->u.mesh.mshcfg);
1103         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1104                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1105         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1106                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1107         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1108                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1109         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1110                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1111         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1112                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1113         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1114                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1115         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1116                 conf->dot11MeshTTL = nconf->element_ttl;
1117         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1118                 conf->auto_open_plinks = nconf->auto_open_plinks;
1119         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1120                 conf->dot11MeshHWMPmaxPREQretries =
1121                         nconf->dot11MeshHWMPmaxPREQretries;
1122         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1123                 conf->path_refresh_time = nconf->path_refresh_time;
1124         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1125                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1126         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1127                 conf->dot11MeshHWMPactivePathTimeout =
1128                         nconf->dot11MeshHWMPactivePathTimeout;
1129         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1130                 conf->dot11MeshHWMPpreqMinInterval =
1131                         nconf->dot11MeshHWMPpreqMinInterval;
1132         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1133                            mask))
1134                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1135                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1136         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1137                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1138                 ieee80211_mesh_root_setup(ifmsh);
1139         }
1140         return 0;
1141 }
1142
1143 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1144                                const struct mesh_config *conf,
1145                                const struct mesh_setup *setup)
1146 {
1147         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1148         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1149         int err;
1150
1151         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1152         err = copy_mesh_setup(ifmsh, setup);
1153         if (err)
1154                 return err;
1155         ieee80211_start_mesh(sdata);
1156
1157         return 0;
1158 }
1159
1160 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1161 {
1162         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1163
1164         ieee80211_stop_mesh(sdata);
1165
1166         return 0;
1167 }
1168 #endif
1169
1170 static int ieee80211_change_bss(struct wiphy *wiphy,
1171                                 struct net_device *dev,
1172                                 struct bss_parameters *params)
1173 {
1174         struct ieee80211_sub_if_data *sdata;
1175         u32 changed = 0;
1176
1177         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1178
1179         if (params->use_cts_prot >= 0) {
1180                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1181                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1182         }
1183         if (params->use_short_preamble >= 0) {
1184                 sdata->vif.bss_conf.use_short_preamble =
1185                         params->use_short_preamble;
1186                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1187         }
1188
1189         if (!sdata->vif.bss_conf.use_short_slot &&
1190             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1191                 sdata->vif.bss_conf.use_short_slot = true;
1192                 changed |= BSS_CHANGED_ERP_SLOT;
1193         }
1194
1195         if (params->use_short_slot_time >= 0) {
1196                 sdata->vif.bss_conf.use_short_slot =
1197                         params->use_short_slot_time;
1198                 changed |= BSS_CHANGED_ERP_SLOT;
1199         }
1200
1201         if (params->basic_rates) {
1202                 int i, j;
1203                 u32 rates = 0;
1204                 struct ieee80211_local *local = wiphy_priv(wiphy);
1205                 struct ieee80211_supported_band *sband =
1206                         wiphy->bands[local->oper_channel->band];
1207
1208                 for (i = 0; i < params->basic_rates_len; i++) {
1209                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1210                         for (j = 0; j < sband->n_bitrates; j++) {
1211                                 if (sband->bitrates[j].bitrate == rate)
1212                                         rates |= BIT(j);
1213                         }
1214                 }
1215                 sdata->vif.bss_conf.basic_rates = rates;
1216                 changed |= BSS_CHANGED_BASIC_RATES;
1217         }
1218
1219         if (params->ap_isolate >= 0) {
1220                 if (params->ap_isolate)
1221                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1222                 else
1223                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1224         }
1225
1226         if (params->ht_opmode >= 0) {
1227                 sdata->vif.bss_conf.ht_operation_mode =
1228                         (u16) params->ht_opmode;
1229                 changed |= BSS_CHANGED_HT;
1230         }
1231
1232         ieee80211_bss_info_change_notify(sdata, changed);
1233
1234         return 0;
1235 }
1236
1237 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1238                                     struct ieee80211_txq_params *params)
1239 {
1240         struct ieee80211_local *local = wiphy_priv(wiphy);
1241         struct ieee80211_tx_queue_params p;
1242
1243         if (!local->ops->conf_tx)
1244                 return -EOPNOTSUPP;
1245
1246         memset(&p, 0, sizeof(p));
1247         p.aifs = params->aifs;
1248         p.cw_max = params->cwmax;
1249         p.cw_min = params->cwmin;
1250         p.txop = params->txop;
1251
1252         /*
1253          * Setting tx queue params disables u-apsd because it's only
1254          * called in master mode.
1255          */
1256         p.uapsd = false;
1257
1258         if (drv_conf_tx(local, params->queue, &p)) {
1259                 wiphy_debug(local->hw.wiphy,
1260                             "failed to set TX queue parameters for queue %d\n",
1261                             params->queue);
1262                 return -EINVAL;
1263         }
1264
1265         return 0;
1266 }
1267
1268 static int ieee80211_set_channel(struct wiphy *wiphy,
1269                                  struct net_device *netdev,
1270                                  struct ieee80211_channel *chan,
1271                                  enum nl80211_channel_type channel_type)
1272 {
1273         struct ieee80211_local *local = wiphy_priv(wiphy);
1274         struct ieee80211_sub_if_data *sdata = NULL;
1275         struct ieee80211_channel *old_oper;
1276         enum nl80211_channel_type old_oper_type;
1277         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1278
1279         if (netdev)
1280                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1281
1282         switch (ieee80211_get_channel_mode(local, NULL)) {
1283         case CHAN_MODE_HOPPING:
1284                 return -EBUSY;
1285         case CHAN_MODE_FIXED:
1286                 if (local->oper_channel != chan)
1287                         return -EBUSY;
1288                 if (!sdata && local->_oper_channel_type == channel_type)
1289                         return 0;
1290                 break;
1291         case CHAN_MODE_UNDEFINED:
1292                 break;
1293         }
1294
1295         if (sdata)
1296                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1297         old_oper_type = local->_oper_channel_type;
1298
1299         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1300                 return -EBUSY;
1301
1302         old_oper = local->oper_channel;
1303         local->oper_channel = chan;
1304
1305         /* Update driver if changes were actually made. */
1306         if ((old_oper != local->oper_channel) ||
1307             (old_oper_type != local->_oper_channel_type))
1308                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1309
1310         if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
1311             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1312                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1313
1314         return 0;
1315 }
1316
1317 #ifdef CONFIG_PM
1318 static int ieee80211_suspend(struct wiphy *wiphy,
1319                              struct cfg80211_wowlan *wowlan)
1320 {
1321         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1322 }
1323
1324 static int ieee80211_resume(struct wiphy *wiphy)
1325 {
1326         return __ieee80211_resume(wiphy_priv(wiphy));
1327 }
1328 #else
1329 #define ieee80211_suspend NULL
1330 #define ieee80211_resume NULL
1331 #endif
1332
1333 static int ieee80211_scan(struct wiphy *wiphy,
1334                           struct net_device *dev,
1335                           struct cfg80211_scan_request *req)
1336 {
1337         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1338
1339         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1340         case NL80211_IFTYPE_STATION:
1341         case NL80211_IFTYPE_ADHOC:
1342         case NL80211_IFTYPE_MESH_POINT:
1343         case NL80211_IFTYPE_P2P_CLIENT:
1344                 break;
1345         case NL80211_IFTYPE_P2P_GO:
1346                 if (sdata->local->ops->hw_scan)
1347                         break;
1348                 /*
1349                  * FIXME: implement NoA while scanning in software,
1350                  * for now fall through to allow scanning only when
1351                  * beaconing hasn't been configured yet
1352                  */
1353         case NL80211_IFTYPE_AP:
1354                 if (sdata->u.ap.beacon)
1355                         return -EOPNOTSUPP;
1356                 break;
1357         default:
1358                 return -EOPNOTSUPP;
1359         }
1360
1361         return ieee80211_request_scan(sdata, req);
1362 }
1363
1364 static int
1365 ieee80211_sched_scan_start(struct wiphy *wiphy,
1366                            struct net_device *dev,
1367                            struct cfg80211_sched_scan_request *req)
1368 {
1369         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1370
1371         if (!sdata->local->ops->sched_scan_start)
1372                 return -EOPNOTSUPP;
1373
1374         return ieee80211_request_sched_scan_start(sdata, req);
1375 }
1376
1377 static int
1378 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1379 {
1380         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1381
1382         if (!sdata->local->ops->sched_scan_stop)
1383                 return -EOPNOTSUPP;
1384
1385         return ieee80211_request_sched_scan_stop(sdata);
1386 }
1387
1388 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1389                           struct cfg80211_auth_request *req)
1390 {
1391         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1392 }
1393
1394 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1395                            struct cfg80211_assoc_request *req)
1396 {
1397         struct ieee80211_local *local = wiphy_priv(wiphy);
1398         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1399
1400         switch (ieee80211_get_channel_mode(local, sdata)) {
1401         case CHAN_MODE_HOPPING:
1402                 return -EBUSY;
1403         case CHAN_MODE_FIXED:
1404                 if (local->oper_channel == req->bss->channel)
1405                         break;
1406                 return -EBUSY;
1407         case CHAN_MODE_UNDEFINED:
1408                 break;
1409         }
1410
1411         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1412 }
1413
1414 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1415                             struct cfg80211_deauth_request *req,
1416                             void *cookie)
1417 {
1418         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1419                                     req, cookie);
1420 }
1421
1422 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1423                               struct cfg80211_disassoc_request *req,
1424                               void *cookie)
1425 {
1426         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1427                                       req, cookie);
1428 }
1429
1430 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1431                                struct cfg80211_ibss_params *params)
1432 {
1433         struct ieee80211_local *local = wiphy_priv(wiphy);
1434         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1435
1436         switch (ieee80211_get_channel_mode(local, sdata)) {
1437         case CHAN_MODE_HOPPING:
1438                 return -EBUSY;
1439         case CHAN_MODE_FIXED:
1440                 if (!params->channel_fixed)
1441                         return -EBUSY;
1442                 if (local->oper_channel == params->channel)
1443                         break;
1444                 return -EBUSY;
1445         case CHAN_MODE_UNDEFINED:
1446                 break;
1447         }
1448
1449         return ieee80211_ibss_join(sdata, params);
1450 }
1451
1452 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1453 {
1454         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1455
1456         return ieee80211_ibss_leave(sdata);
1457 }
1458
1459 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1460 {
1461         struct ieee80211_local *local = wiphy_priv(wiphy);
1462         int err;
1463
1464         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1465                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1466
1467                 if (err)
1468                         return err;
1469         }
1470
1471         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1472                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1473
1474                 if (err)
1475                         return err;
1476         }
1477
1478         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1479                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1480
1481                 if (err)
1482                         return err;
1483         }
1484
1485         if (changed & WIPHY_PARAM_RETRY_SHORT)
1486                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1487         if (changed & WIPHY_PARAM_RETRY_LONG)
1488                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1489         if (changed &
1490             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1491                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1492
1493         return 0;
1494 }
1495
1496 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1497                                   enum nl80211_tx_power_setting type, int mbm)
1498 {
1499         struct ieee80211_local *local = wiphy_priv(wiphy);
1500         struct ieee80211_channel *chan = local->hw.conf.channel;
1501         u32 changes = 0;
1502
1503         switch (type) {
1504         case NL80211_TX_POWER_AUTOMATIC:
1505                 local->user_power_level = -1;
1506                 break;
1507         case NL80211_TX_POWER_LIMITED:
1508                 if (mbm < 0 || (mbm % 100))
1509                         return -EOPNOTSUPP;
1510                 local->user_power_level = MBM_TO_DBM(mbm);
1511                 break;
1512         case NL80211_TX_POWER_FIXED:
1513                 if (mbm < 0 || (mbm % 100))
1514                         return -EOPNOTSUPP;
1515                 /* TODO: move to cfg80211 when it knows the channel */
1516                 if (MBM_TO_DBM(mbm) > chan->max_power)
1517                         return -EINVAL;
1518                 local->user_power_level = MBM_TO_DBM(mbm);
1519                 break;
1520         }
1521
1522         ieee80211_hw_config(local, changes);
1523
1524         return 0;
1525 }
1526
1527 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1528 {
1529         struct ieee80211_local *local = wiphy_priv(wiphy);
1530
1531         *dbm = local->hw.conf.power_level;
1532
1533         return 0;
1534 }
1535
1536 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1537                                   const u8 *addr)
1538 {
1539         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1540
1541         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1542
1543         return 0;
1544 }
1545
1546 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1547 {
1548         struct ieee80211_local *local = wiphy_priv(wiphy);
1549
1550         drv_rfkill_poll(local);
1551 }
1552
1553 #ifdef CONFIG_NL80211_TESTMODE
1554 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1555 {
1556         struct ieee80211_local *local = wiphy_priv(wiphy);
1557
1558         if (!local->ops->testmode_cmd)
1559                 return -EOPNOTSUPP;
1560
1561         return local->ops->testmode_cmd(&local->hw, data, len);
1562 }
1563
1564 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1565                                    struct sk_buff *skb,
1566                                    struct netlink_callback *cb,
1567                                    void *data, int len)
1568 {
1569         struct ieee80211_local *local = wiphy_priv(wiphy);
1570
1571         if (!local->ops->testmode_dump)
1572                 return -EOPNOTSUPP;
1573
1574         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1575 }
1576 #endif
1577
1578 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1579                              enum ieee80211_smps_mode smps_mode)
1580 {
1581         const u8 *ap;
1582         enum ieee80211_smps_mode old_req;
1583         int err;
1584
1585         lockdep_assert_held(&sdata->u.mgd.mtx);
1586
1587         old_req = sdata->u.mgd.req_smps;
1588         sdata->u.mgd.req_smps = smps_mode;
1589
1590         if (old_req == smps_mode &&
1591             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1592                 return 0;
1593
1594         /*
1595          * If not associated, or current association is not an HT
1596          * association, there's no need to send an action frame.
1597          */
1598         if (!sdata->u.mgd.associated ||
1599             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1600                 mutex_lock(&sdata->local->iflist_mtx);
1601                 ieee80211_recalc_smps(sdata->local);
1602                 mutex_unlock(&sdata->local->iflist_mtx);
1603                 return 0;
1604         }
1605
1606         ap = sdata->u.mgd.associated->bssid;
1607
1608         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1609                 if (sdata->u.mgd.powersave)
1610                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1611                 else
1612                         smps_mode = IEEE80211_SMPS_OFF;
1613         }
1614
1615         /* send SM PS frame to AP */
1616         err = ieee80211_send_smps_action(sdata, smps_mode,
1617                                          ap, ap);
1618         if (err)
1619                 sdata->u.mgd.req_smps = old_req;
1620
1621         return err;
1622 }
1623
1624 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1625                                     bool enabled, int timeout)
1626 {
1627         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1628         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1629
1630         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1631                 return -EOPNOTSUPP;
1632
1633         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1634                 return -EOPNOTSUPP;
1635
1636         if (enabled == sdata->u.mgd.powersave &&
1637             timeout == local->dynamic_ps_forced_timeout)
1638                 return 0;
1639
1640         sdata->u.mgd.powersave = enabled;
1641         local->dynamic_ps_forced_timeout = timeout;
1642
1643         /* no change, but if automatic follow powersave */
1644         mutex_lock(&sdata->u.mgd.mtx);
1645         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1646         mutex_unlock(&sdata->u.mgd.mtx);
1647
1648         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1649                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1650
1651         ieee80211_recalc_ps(local, -1);
1652
1653         return 0;
1654 }
1655
1656 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1657                                          struct net_device *dev,
1658                                          s32 rssi_thold, u32 rssi_hyst)
1659 {
1660         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1661         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1662         struct ieee80211_vif *vif = &sdata->vif;
1663         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1664
1665         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1666             rssi_hyst == bss_conf->cqm_rssi_hyst)
1667                 return 0;
1668
1669         bss_conf->cqm_rssi_thold = rssi_thold;
1670         bss_conf->cqm_rssi_hyst = rssi_hyst;
1671
1672         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1673                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1674                         return -EOPNOTSUPP;
1675                 return 0;
1676         }
1677
1678         /* tell the driver upon association, unless already associated */
1679         if (sdata->u.mgd.associated)
1680                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1681
1682         return 0;
1683 }
1684
1685 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1686                                       struct net_device *dev,
1687                                       const u8 *addr,
1688                                       const struct cfg80211_bitrate_mask *mask)
1689 {
1690         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1691         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1692         int i, ret;
1693
1694         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1695                 ret = drv_set_bitrate_mask(local, sdata, mask);
1696                 if (ret)
1697                         return ret;
1698         }
1699
1700         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1701                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1702
1703         return 0;
1704 }
1705
1706 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1707                                           struct net_device *dev,
1708                                           struct ieee80211_channel *chan,
1709                                           enum nl80211_channel_type chantype,
1710                                           unsigned int duration, u64 *cookie)
1711 {
1712         int ret;
1713         u32 random_cookie;
1714
1715         lockdep_assert_held(&local->mtx);
1716
1717         if (local->hw_roc_cookie)
1718                 return -EBUSY;
1719         /* must be nonzero */
1720         random_cookie = random32() | 1;
1721
1722         *cookie = random_cookie;
1723         local->hw_roc_dev = dev;
1724         local->hw_roc_cookie = random_cookie;
1725         local->hw_roc_channel = chan;
1726         local->hw_roc_channel_type = chantype;
1727         local->hw_roc_duration = duration;
1728         ret = drv_remain_on_channel(local, chan, chantype, duration);
1729         if (ret) {
1730                 local->hw_roc_channel = NULL;
1731                 local->hw_roc_cookie = 0;
1732         }
1733
1734         return ret;
1735 }
1736
1737 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1738                                        struct net_device *dev,
1739                                        struct ieee80211_channel *chan,
1740                                        enum nl80211_channel_type channel_type,
1741                                        unsigned int duration,
1742                                        u64 *cookie)
1743 {
1744         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1745         struct ieee80211_local *local = sdata->local;
1746
1747         if (local->ops->remain_on_channel) {
1748                 int ret;
1749
1750                 mutex_lock(&local->mtx);
1751                 ret = ieee80211_remain_on_channel_hw(local, dev,
1752                                                      chan, channel_type,
1753                                                      duration, cookie);
1754                 local->hw_roc_for_tx = false;
1755                 mutex_unlock(&local->mtx);
1756
1757                 return ret;
1758         }
1759
1760         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1761                                               duration, cookie);
1762 }
1763
1764 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1765                                                  u64 cookie)
1766 {
1767         int ret;
1768
1769         lockdep_assert_held(&local->mtx);
1770
1771         if (local->hw_roc_cookie != cookie)
1772                 return -ENOENT;
1773
1774         ret = drv_cancel_remain_on_channel(local);
1775         if (ret)
1776                 return ret;
1777
1778         local->hw_roc_cookie = 0;
1779         local->hw_roc_channel = NULL;
1780
1781         ieee80211_recalc_idle(local);
1782
1783         return 0;
1784 }
1785
1786 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1787                                               struct net_device *dev,
1788                                               u64 cookie)
1789 {
1790         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1791         struct ieee80211_local *local = sdata->local;
1792
1793         if (local->ops->cancel_remain_on_channel) {
1794                 int ret;
1795
1796                 mutex_lock(&local->mtx);
1797                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1798                 mutex_unlock(&local->mtx);
1799
1800                 return ret;
1801         }
1802
1803         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1804 }
1805
1806 static enum work_done_result
1807 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1808 {
1809         /*
1810          * Use the data embedded in the work struct for reporting
1811          * here so if the driver mangled the SKB before dropping
1812          * it (which is the only way we really should get here)
1813          * then we don't report mangled data.
1814          *
1815          * If there was no wait time, then by the time we get here
1816          * the driver will likely not have reported the status yet,
1817          * so in that case userspace will have to deal with it.
1818          */
1819
1820         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1821                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1822                                         (unsigned long) wk->offchan_tx.frame,
1823                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1824
1825         return WORK_DONE_DESTROY;
1826 }
1827
1828 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1829                              struct ieee80211_channel *chan, bool offchan,
1830                              enum nl80211_channel_type channel_type,
1831                              bool channel_type_valid, unsigned int wait,
1832                              const u8 *buf, size_t len, u64 *cookie)
1833 {
1834         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1835         struct ieee80211_local *local = sdata->local;
1836         struct sk_buff *skb;
1837         struct sta_info *sta;
1838         struct ieee80211_work *wk;
1839         const struct ieee80211_mgmt *mgmt = (void *)buf;
1840         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1841                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1842         bool is_offchan = false;
1843
1844         /* Check that we are on the requested channel for transmission */
1845         if (chan != local->tmp_channel &&
1846             chan != local->oper_channel)
1847                 is_offchan = true;
1848         if (channel_type_valid &&
1849             (channel_type != local->tmp_channel_type &&
1850              channel_type != local->_oper_channel_type))
1851                 is_offchan = true;
1852
1853         if (chan == local->hw_roc_channel) {
1854                 /* TODO: check channel type? */
1855                 is_offchan = false;
1856                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1857         }
1858
1859         if (is_offchan && !offchan)
1860                 return -EBUSY;
1861
1862         switch (sdata->vif.type) {
1863         case NL80211_IFTYPE_ADHOC:
1864         case NL80211_IFTYPE_AP:
1865         case NL80211_IFTYPE_AP_VLAN:
1866         case NL80211_IFTYPE_P2P_GO:
1867         case NL80211_IFTYPE_MESH_POINT:
1868                 if (!ieee80211_is_action(mgmt->frame_control) ||
1869                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1870                         break;
1871                 rcu_read_lock();
1872                 sta = sta_info_get(sdata, mgmt->da);
1873                 rcu_read_unlock();
1874                 if (!sta)
1875                         return -ENOLINK;
1876                 break;
1877         case NL80211_IFTYPE_STATION:
1878         case NL80211_IFTYPE_P2P_CLIENT:
1879                 break;
1880         default:
1881                 return -EOPNOTSUPP;
1882         }
1883
1884         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1885         if (!skb)
1886                 return -ENOMEM;
1887         skb_reserve(skb, local->hw.extra_tx_headroom);
1888
1889         memcpy(skb_put(skb, len), buf, len);
1890
1891         IEEE80211_SKB_CB(skb)->flags = flags;
1892
1893         skb->dev = sdata->dev;
1894
1895         *cookie = (unsigned long) skb;
1896
1897         if (is_offchan && local->ops->offchannel_tx) {
1898                 int ret;
1899
1900                 IEEE80211_SKB_CB(skb)->band = chan->band;
1901
1902                 mutex_lock(&local->mtx);
1903
1904                 if (local->hw_offchan_tx_cookie) {
1905                         mutex_unlock(&local->mtx);
1906                         return -EBUSY;
1907                 }
1908
1909                 /* TODO: bitrate control, TX processing? */
1910                 ret = drv_offchannel_tx(local, skb, chan, channel_type, wait);
1911
1912                 if (ret == 0)
1913                         local->hw_offchan_tx_cookie = *cookie;
1914                 mutex_unlock(&local->mtx);
1915
1916                 /*
1917                  * Allow driver to return 1 to indicate it wants to have the
1918                  * frame transmitted with a remain_on_channel + regular TX.
1919                  */
1920                 if (ret != 1)
1921                         return ret;
1922         }
1923
1924         if (is_offchan && local->ops->remain_on_channel) {
1925                 unsigned int duration;
1926                 int ret;
1927
1928                 mutex_lock(&local->mtx);
1929                 /*
1930                  * If the duration is zero, then the driver
1931                  * wouldn't actually do anything. Set it to
1932                  * 100 for now.
1933                  *
1934                  * TODO: cancel the off-channel operation
1935                  *       when we get the SKB's TX status and
1936                  *       the wait time was zero before.
1937                  */
1938                 duration = 100;
1939                 if (wait)
1940                         duration = wait;
1941                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
1942                                                      channel_type,
1943                                                      duration, cookie);
1944                 if (ret) {
1945                         kfree_skb(skb);
1946                         mutex_unlock(&local->mtx);
1947                         return ret;
1948                 }
1949
1950                 local->hw_roc_for_tx = true;
1951                 local->hw_roc_duration = wait;
1952
1953                 /*
1954                  * queue up frame for transmission after
1955                  * ieee80211_ready_on_channel call
1956                  */
1957
1958                 /* modify cookie to prevent API mismatches */
1959                 *cookie ^= 2;
1960                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1961                 local->hw_roc_skb = skb;
1962                 local->hw_roc_skb_for_status = skb;
1963                 mutex_unlock(&local->mtx);
1964
1965                 return 0;
1966         }
1967
1968         /*
1969          * Can transmit right away if the channel was the
1970          * right one and there's no wait involved... If a
1971          * wait is involved, we might otherwise not be on
1972          * the right channel for long enough!
1973          */
1974         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1975                 ieee80211_tx_skb(sdata, skb);
1976                 return 0;
1977         }
1978
1979         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1980         if (!wk) {
1981                 kfree_skb(skb);
1982                 return -ENOMEM;
1983         }
1984
1985         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1986         wk->chan = chan;
1987         wk->chan_type = channel_type;
1988         wk->sdata = sdata;
1989         wk->done = ieee80211_offchan_tx_done;
1990         wk->offchan_tx.frame = skb;
1991         wk->offchan_tx.wait = wait;
1992         wk->ie_len = len;
1993         memcpy(wk->ie, buf, len);
1994
1995         ieee80211_add_work(wk);
1996         return 0;
1997 }
1998
1999 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2000                                          struct net_device *dev,
2001                                          u64 cookie)
2002 {
2003         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2004         struct ieee80211_local *local = sdata->local;
2005         struct ieee80211_work *wk;
2006         int ret = -ENOENT;
2007
2008         mutex_lock(&local->mtx);
2009
2010         if (local->ops->offchannel_tx_cancel_wait &&
2011             local->hw_offchan_tx_cookie == cookie) {
2012                 ret = drv_offchannel_tx_cancel_wait(local);
2013
2014                 if (!ret)
2015                         local->hw_offchan_tx_cookie = 0;
2016
2017                 mutex_unlock(&local->mtx);
2018
2019                 return ret;
2020         }
2021
2022         if (local->ops->cancel_remain_on_channel) {
2023                 cookie ^= 2;
2024                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2025
2026                 if (ret == 0) {
2027                         kfree_skb(local->hw_roc_skb);
2028                         local->hw_roc_skb = NULL;
2029                         local->hw_roc_skb_for_status = NULL;
2030                 }
2031
2032                 mutex_unlock(&local->mtx);
2033
2034                 return ret;
2035         }
2036
2037         list_for_each_entry(wk, &local->work_list, list) {
2038                 if (wk->sdata != sdata)
2039                         continue;
2040
2041                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2042                         continue;
2043
2044                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2045                         continue;
2046
2047                 wk->timeout = jiffies;
2048
2049                 ieee80211_queue_work(&local->hw, &local->work_work);
2050                 ret = 0;
2051                 break;
2052         }
2053         mutex_unlock(&local->mtx);
2054
2055         return ret;
2056 }
2057
2058 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2059                                           struct net_device *dev,
2060                                           u16 frame_type, bool reg)
2061 {
2062         struct ieee80211_local *local = wiphy_priv(wiphy);
2063
2064         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2065                 return;
2066
2067         if (reg)
2068                 local->probe_req_reg++;
2069         else
2070                 local->probe_req_reg--;
2071
2072         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2073 }
2074
2075 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2076 {
2077         struct ieee80211_local *local = wiphy_priv(wiphy);
2078
2079         if (local->started)
2080                 return -EOPNOTSUPP;
2081
2082         return drv_set_antenna(local, tx_ant, rx_ant);
2083 }
2084
2085 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2086 {
2087         struct ieee80211_local *local = wiphy_priv(wiphy);
2088
2089         return drv_get_antenna(local, tx_ant, rx_ant);
2090 }
2091
2092 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2093 {
2094         struct ieee80211_local *local = wiphy_priv(wiphy);
2095
2096         return drv_set_ringparam(local, tx, rx);
2097 }
2098
2099 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2100                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2101 {
2102         struct ieee80211_local *local = wiphy_priv(wiphy);
2103
2104         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2105 }
2106
2107 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2108                                     struct net_device *dev,
2109                                     struct cfg80211_gtk_rekey_data *data)
2110 {
2111         struct ieee80211_local *local = wiphy_priv(wiphy);
2112         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2113
2114         if (!local->ops->set_rekey_data)
2115                 return -EOPNOTSUPP;
2116
2117         drv_set_rekey_data(local, sdata, data);
2118
2119         return 0;
2120 }
2121
2122 struct cfg80211_ops mac80211_config_ops = {
2123         .add_virtual_intf = ieee80211_add_iface,
2124         .del_virtual_intf = ieee80211_del_iface,
2125         .change_virtual_intf = ieee80211_change_iface,
2126         .add_key = ieee80211_add_key,
2127         .del_key = ieee80211_del_key,
2128         .get_key = ieee80211_get_key,
2129         .set_default_key = ieee80211_config_default_key,
2130         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2131         .add_beacon = ieee80211_add_beacon,
2132         .set_beacon = ieee80211_set_beacon,
2133         .del_beacon = ieee80211_del_beacon,
2134         .add_station = ieee80211_add_station,
2135         .del_station = ieee80211_del_station,
2136         .change_station = ieee80211_change_station,
2137         .get_station = ieee80211_get_station,
2138         .dump_station = ieee80211_dump_station,
2139         .dump_survey = ieee80211_dump_survey,
2140 #ifdef CONFIG_MAC80211_MESH
2141         .add_mpath = ieee80211_add_mpath,
2142         .del_mpath = ieee80211_del_mpath,
2143         .change_mpath = ieee80211_change_mpath,
2144         .get_mpath = ieee80211_get_mpath,
2145         .dump_mpath = ieee80211_dump_mpath,
2146         .update_mesh_config = ieee80211_update_mesh_config,
2147         .get_mesh_config = ieee80211_get_mesh_config,
2148         .join_mesh = ieee80211_join_mesh,
2149         .leave_mesh = ieee80211_leave_mesh,
2150 #endif
2151         .change_bss = ieee80211_change_bss,
2152         .set_txq_params = ieee80211_set_txq_params,
2153         .set_channel = ieee80211_set_channel,
2154         .suspend = ieee80211_suspend,
2155         .resume = ieee80211_resume,
2156         .scan = ieee80211_scan,
2157         .sched_scan_start = ieee80211_sched_scan_start,
2158         .sched_scan_stop = ieee80211_sched_scan_stop,
2159         .auth = ieee80211_auth,
2160         .assoc = ieee80211_assoc,
2161         .deauth = ieee80211_deauth,
2162         .disassoc = ieee80211_disassoc,
2163         .join_ibss = ieee80211_join_ibss,
2164         .leave_ibss = ieee80211_leave_ibss,
2165         .set_wiphy_params = ieee80211_set_wiphy_params,
2166         .set_tx_power = ieee80211_set_tx_power,
2167         .get_tx_power = ieee80211_get_tx_power,
2168         .set_wds_peer = ieee80211_set_wds_peer,
2169         .rfkill_poll = ieee80211_rfkill_poll,
2170         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2171         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2172         .set_power_mgmt = ieee80211_set_power_mgmt,
2173         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2174         .remain_on_channel = ieee80211_remain_on_channel,
2175         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2176         .mgmt_tx = ieee80211_mgmt_tx,
2177         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2178         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2179         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2180         .set_antenna = ieee80211_set_antenna,
2181         .get_antenna = ieee80211_get_antenna,
2182         .set_ringparam = ieee80211_set_ringparam,
2183         .get_ringparam = ieee80211_get_ringparam,
2184         .set_rekey_data = ieee80211_set_rekey_data,
2185 };