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 int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                enum nl80211_iftype type, u32 *flags,
  24                                struct vif_params *params)
  25 {
  26         struct ieee80211_local *local = wiphy_priv(wiphy);
  27         struct net_device *dev;
  28         struct ieee80211_sub_if_data *sdata;
  29         int err;
  30
  31         err = ieee80211_if_add(local, name, &dev, type, params);
  32         if (err || type != NL80211_IFTYPE_MONITOR || !flags)
  33                 return err;
  34
  35         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  36         sdata->u.mntr_flags = *flags;
  37         return 0;
  38 }
  39
  40 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  41 {
  42         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  43
  44         return 0;
  45 }
  46
  47 static int ieee80211_change_iface(struct wiphy *wiphy,
  48                                   struct net_device *dev,
  49                                   enum nl80211_iftype type, u32 *flags,
  50                                   struct vif_params *params)
  51 {
  52         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  53         int ret;
  54
  55         ret = ieee80211_if_change_type(sdata, type);
  56         if (ret)
  57                 return ret;
  58
  59         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
  60                 ieee80211_sdata_set_mesh_id(sdata,
  61                                             params->mesh_id_len,
  62                                             params->mesh_id);
  63
  64         if (type == NL80211_IFTYPE_AP_VLAN &&
  65             params && params->use_4addr == 0)
  66                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
  67         else if (type == NL80211_IFTYPE_STATION &&
  68                  params && params->use_4addr >= 0)
  69                 sdata->u.mgd.use_4addr = params->use_4addr;
  70
  71         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  72                 struct ieee80211_local *local = sdata->local;
  73
  74                 if (ieee80211_sdata_running(sdata)) {
  75                         /*
  76                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  77                          * changed while the interface is up.
  78                          * Else we would need to add a lot of cruft
  79                          * to update everything:
  80                          *      cooked_mntrs, monitor and all fif_* counters
  81                          *      reconfigure hardware
  82                          */
  83                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  84                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  85                                 return -EBUSY;
  86
  87                         ieee80211_adjust_monitor_flags(sdata, -1);
  88                         sdata->u.mntr_flags = *flags;
  89                         ieee80211_adjust_monitor_flags(sdata, 1);
  90
  91                         ieee80211_configure_filter(local);
  92                 } else {
  93                         /*
  94                          * Because the interface is down, ieee80211_do_stop
  95                          * and ieee80211_do_open take care of "everything"
  96                          * mentioned in the comment above.
  97                          */
  98                         sdata->u.mntr_flags = *flags;
  99                 }
 100         }
 101
 102         return 0;
 103 }
 104
 105 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 106                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 107                              struct key_params *params)
 108 {
 109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110         struct sta_info *sta = NULL;
 111         struct ieee80211_key *key;
 112         int err;
 113
 114         if (!ieee80211_sdata_running(sdata))
 115                 return -ENETDOWN;
 116
 117         /* reject WEP and TKIP keys if WEP failed to initialize */
 118         switch (params->cipher) {
 119         case WLAN_CIPHER_SUITE_WEP40:
 120         case WLAN_CIPHER_SUITE_TKIP:
 121         case WLAN_CIPHER_SUITE_WEP104:
 122                 if (IS_ERR(sdata->local->wep_tx_tfm))
 123                         return -EINVAL;
 124                 break;
 125         default:
 126                 break;
 127         }
 128
 129         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 130                                   params->key, params->seq_len, params->seq);
 131         if (IS_ERR(key))
 132                 return PTR_ERR(key);
 133
 134         if (pairwise)
 135                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 136
 137         mutex_lock(&sdata->local->sta_mtx);
 138
 139         if (mac_addr) {
 140                 sta = sta_info_get_bss(sdata, mac_addr);
 141                 if (!sta) {
 142                         ieee80211_key_free(sdata->local, key);
 143                         err = -ENOENT;
 144                         goto out_unlock;
 145                 }
 146         }
 147
 148         err = ieee80211_key_link(key, sdata, sta);
 149         if (err)
 150                 ieee80211_key_free(sdata->local, key);
 151
 152  out_unlock:
 153         mutex_unlock(&sdata->local->sta_mtx);
 154
 155         return err;
 156 }
 157
 158 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 159                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 160 {
 161         struct ieee80211_sub_if_data *sdata;
 162         struct sta_info *sta;
 163         int ret;
 164
 165         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 166
 167         mutex_lock(&sdata->local->sta_mtx);
 168
 169         if (mac_addr) {
 170                 ret = -ENOENT;
 171
 172                 sta = sta_info_get_bss(sdata, mac_addr);
 173                 if (!sta)
 174                         goto out_unlock;
 175
 176                 if (pairwise) {
 177                         if (sta->ptk) {
 178                                 ieee80211_key_free(sdata->local, sta->ptk);
 179                                 ret = 0;
 180                         }
 181                 } else {
 182                         if (sta->gtk[key_idx]) {
 183                                 ieee80211_key_free(sdata->local,
 184                                                    sta->gtk[key_idx]);
 185                                 ret = 0;
 186                         }
 187                 }
 188
 189                 goto out_unlock;
 190         }
 191
 192         if (!sdata->keys[key_idx]) {
 193                 ret = -ENOENT;
 194                 goto out_unlock;
 195         }
 196
 197         ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
 198         WARN_ON(sdata->keys[key_idx]);
 199
 200         ret = 0;
 201  out_unlock:
 202         mutex_unlock(&sdata->local->sta_mtx);
 203
 204         return ret;
 205 }
 206
 207 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 208                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 209                              void *cookie,
 210                              void (*callback)(void *cookie,
 211                                               struct key_params *params))
 212 {
 213         struct ieee80211_sub_if_data *sdata;
 214         struct sta_info *sta = NULL;
 215         u8 seq[6] = {0};
 216         struct key_params params;
 217         struct ieee80211_key *key = NULL;
 218         u32 iv32;
 219         u16 iv16;
 220         int err = -ENOENT;
 221
 222         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 223
 224         rcu_read_lock();
 225
 226         if (mac_addr) {
 227                 sta = sta_info_get_bss(sdata, mac_addr);
 228                 if (!sta)
 229                         goto out;
 230
 231                 if (pairwise)
 232                         key = sta->ptk;
 233                 else if (key_idx < NUM_DEFAULT_KEYS)
 234                         key = sta->gtk[key_idx];
 235         } else
 236                 key = sdata->keys[key_idx];
 237
 238         if (!key)
 239                 goto out;
 240
 241         memset(&params, 0, sizeof(params));
 242
 243         params.cipher = key->conf.cipher;
 244
 245         switch (key->conf.cipher) {
 246         case WLAN_CIPHER_SUITE_TKIP:
 247                 iv32 = key->u.tkip.tx.iv32;
 248                 iv16 = key->u.tkip.tx.iv16;
 249
 250                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 251                         drv_get_tkip_seq(sdata->local,
 252                                          key->conf.hw_key_idx,
 253                                          &iv32, &iv16);
 254
 255                 seq[0] = iv16 & 0xff;
 256                 seq[1] = (iv16 >> 8) & 0xff;
 257                 seq[2] = iv32 & 0xff;
 258                 seq[3] = (iv32 >> 8) & 0xff;
 259                 seq[4] = (iv32 >> 16) & 0xff;
 260                 seq[5] = (iv32 >> 24) & 0xff;
 261                 params.seq = seq;
 262                 params.seq_len = 6;
 263                 break;
 264         case WLAN_CIPHER_SUITE_CCMP:
 265                 seq[0] = key->u.ccmp.tx_pn[5];
 266                 seq[1] = key->u.ccmp.tx_pn[4];
 267                 seq[2] = key->u.ccmp.tx_pn[3];
 268                 seq[3] = key->u.ccmp.tx_pn[2];
 269                 seq[4] = key->u.ccmp.tx_pn[1];
 270                 seq[5] = key->u.ccmp.tx_pn[0];
 271                 params.seq = seq;
 272                 params.seq_len = 6;
 273                 break;
 274         case WLAN_CIPHER_SUITE_AES_CMAC:
 275                 seq[0] = key->u.aes_cmac.tx_pn[5];
 276                 seq[1] = key->u.aes_cmac.tx_pn[4];
 277                 seq[2] = key->u.aes_cmac.tx_pn[3];
 278                 seq[3] = key->u.aes_cmac.tx_pn[2];
 279                 seq[4] = key->u.aes_cmac.tx_pn[1];
 280                 seq[5] = key->u.aes_cmac.tx_pn[0];
 281                 params.seq = seq;
 282                 params.seq_len = 6;
 283                 break;
 284         }
 285
 286         params.key = key->conf.key;
 287         params.key_len = key->conf.keylen;
 288
 289         callback(cookie, &params);
 290         err = 0;
 291
 292  out:
 293         rcu_read_unlock();
 294         return err;
 295 }
 296
 297 static int ieee80211_config_default_key(struct wiphy *wiphy,
 298                                         struct net_device *dev,
 299                                         u8 key_idx)
 300 {
 301         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 302
 303         ieee80211_set_default_key(sdata, key_idx);
 304
 305         return 0;
 306 }
 307
 308 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 309                                              struct net_device *dev,
 310                                              u8 key_idx)
 311 {
 312         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 313
 314         ieee80211_set_default_mgmt_key(sdata, key_idx);
 315
 316         return 0;
 317 }
 318
 319 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 320 {
 321         struct ieee80211_sub_if_data *sdata = sta->sdata;
 322
 323         sinfo->generation = sdata->local->sta_generation;
 324
 325         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 326                         STATION_INFO_RX_BYTES |
 327                         STATION_INFO_TX_BYTES |
 328                         STATION_INFO_RX_PACKETS |
 329                         STATION_INFO_TX_PACKETS |
 330                         STATION_INFO_TX_RETRIES |
 331                         STATION_INFO_TX_FAILED |
 332                         STATION_INFO_TX_BITRATE |
 333                         STATION_INFO_RX_DROP_MISC;
 334
 335         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 336         sinfo->rx_bytes = sta->rx_bytes;
 337         sinfo->tx_bytes = sta->tx_bytes;
 338         sinfo->rx_packets = sta->rx_packets;
 339         sinfo->tx_packets = sta->tx_packets;
 340         sinfo->tx_retries = sta->tx_retry_count;
 341         sinfo->tx_failed = sta->tx_retry_failed;
 342         sinfo->rx_dropped_misc = sta->rx_dropped;
 343
 344         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 345             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 346                 sinfo->filled |= STATION_INFO_SIGNAL;
 347                 sinfo->signal = (s8)sta->last_signal;
 348         }
 349
 350         sinfo->txrate.flags = 0;
 351         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 352                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 353         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 354                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 355         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 356                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 357
 358         if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
 359                 struct ieee80211_supported_band *sband;
 360                 sband = sta->local->hw.wiphy->bands[
 361                                 sta->local->hw.conf.channel->band];
 362                 sinfo->txrate.legacy =
 363                         sband->bitrates[sta->last_tx_rate.idx].bitrate;
 364         } else
 365                 sinfo->txrate.mcs = sta->last_tx_rate.idx;
 366
 367         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 368 #ifdef CONFIG_MAC80211_MESH
 369                 sinfo->filled |= STATION_INFO_LLID |
 370                                  STATION_INFO_PLID |
 371                                  STATION_INFO_PLINK_STATE;
 372
 373                 sinfo->llid = le16_to_cpu(sta->llid);
 374                 sinfo->plid = le16_to_cpu(sta->plid);
 375                 sinfo->plink_state = sta->plink_state;
 376 #endif
 377         }
 378 }
 379
 380
 381 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 382                                  int idx, u8 *mac, struct station_info *sinfo)
 383 {
 384         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 385         struct sta_info *sta;
 386         int ret = -ENOENT;
 387
 388         rcu_read_lock();
 389
 390         sta = sta_info_get_by_idx(sdata, idx);
 391         if (sta) {
 392                 ret = 0;
 393                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 394                 sta_set_sinfo(sta, sinfo);
 395         }
 396
 397         rcu_read_unlock();
 398
 399         return ret;
 400 }
 401
 402 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 403                                  int idx, struct survey_info *survey)
 404 {
 405         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 406
 407         return drv_get_survey(local, idx, survey);
 408 }
 409
 410 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 411                                  u8 *mac, struct station_info *sinfo)
 412 {
 413         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 414         struct sta_info *sta;
 415         int ret = -ENOENT;
 416
 417         rcu_read_lock();
 418
 419         sta = sta_info_get_bss(sdata, mac);
 420         if (sta) {
 421                 ret = 0;
 422                 sta_set_sinfo(sta, sinfo);
 423         }
 424
 425         rcu_read_unlock();
 426
 427         return ret;
 428 }
 429
 430 /*
 431  * This handles both adding a beacon and setting new beacon info
 432  */
 433 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 434                                    struct beacon_parameters *params)
 435 {
 436         struct beacon_data *new, *old;
 437         int new_head_len, new_tail_len;
 438         int size;
 439         int err = -EINVAL;
 440
 441         old = sdata->u.ap.beacon;
 442
 443         /* head must not be zero-length */
 444         if (params->head && !params->head_len)
 445                 return -EINVAL;
 446
 447         /*
 448          * This is a kludge. beacon interval should really be part
 449          * of the beacon information.
 450          */
 451         if (params->interval &&
 452             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 453                 sdata->vif.bss_conf.beacon_int = params->interval;
 454                 ieee80211_bss_info_change_notify(sdata,
 455                                                  BSS_CHANGED_BEACON_INT);
 456         }
 457
 458         /* Need to have a beacon head if we don't have one yet */
 459         if (!params->head && !old)
 460                 return err;
 461
 462         /* sorry, no way to start beaconing without dtim period */
 463         if (!params->dtim_period && !old)
 464                 return err;
 465
 466         /* new or old head? */
 467         if (params->head)
 468                 new_head_len = params->head_len;
 469         else
 470                 new_head_len = old->head_len;
 471
 472         /* new or old tail? */
 473         if (params->tail || !old)
 474                 /* params->tail_len will be zero for !params->tail */
 475                 new_tail_len = params->tail_len;
 476         else
 477                 new_tail_len = old->tail_len;
 478
 479         size = sizeof(*new) + new_head_len + new_tail_len;
 480
 481         new = kzalloc(size, GFP_KERNEL);
 482         if (!new)
 483                 return -ENOMEM;
 484
 485         /* start filling the new info now */
 486
 487         /* new or old dtim period? */
 488         if (params->dtim_period)
 489                 new->dtim_period = params->dtim_period;
 490         else
 491                 new->dtim_period = old->dtim_period;
 492
 493         /*
 494          * pointers go into the block we allocated,
 495          * memory is | beacon_data | head | tail |
 496          */
 497         new->head = ((u8 *) new) + sizeof(*new);
 498         new->tail = new->head + new_head_len;
 499         new->head_len = new_head_len;
 500         new->tail_len = new_tail_len;
 501
 502         /* copy in head */
 503         if (params->head)
 504                 memcpy(new->head, params->head, new_head_len);
 505         else
 506                 memcpy(new->head, old->head, new_head_len);
 507
 508         /* copy in optional tail */
 509         if (params->tail)
 510                 memcpy(new->tail, params->tail, new_tail_len);
 511         else
 512                 if (old)
 513                         memcpy(new->tail, old->tail, new_tail_len);
 514
 515         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 516
 517         rcu_assign_pointer(sdata->u.ap.beacon, new);
 518
 519         synchronize_rcu();
 520
 521         kfree(old);
 522
 523         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 524                                                 BSS_CHANGED_BEACON);
 525         return 0;
 526 }
 527
 528 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 529                                 struct beacon_parameters *params)
 530 {
 531         struct ieee80211_sub_if_data *sdata;
 532         struct beacon_data *old;
 533
 534         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 535
 536         old = sdata->u.ap.beacon;
 537
 538         if (old)
 539                 return -EALREADY;
 540
 541         return ieee80211_config_beacon(sdata, params);
 542 }
 543
 544 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 545                                 struct beacon_parameters *params)
 546 {
 547         struct ieee80211_sub_if_data *sdata;
 548         struct beacon_data *old;
 549
 550         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 551
 552         old = sdata->u.ap.beacon;
 553
 554         if (!old)
 555                 return -ENOENT;
 556
 557         return ieee80211_config_beacon(sdata, params);
 558 }
 559
 560 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 561 {
 562         struct ieee80211_sub_if_data *sdata;
 563         struct beacon_data *old;
 564
 565         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 566
 567         old = sdata->u.ap.beacon;
 568
 569         if (!old)
 570                 return -ENOENT;
 571
 572         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 573         synchronize_rcu();
 574         kfree(old);
 575
 576         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 577         return 0;
 578 }
 579
 580 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 581 struct iapp_layer2_update {
 582         u8 da[ETH_ALEN];        /* broadcast */
 583         u8 sa[ETH_ALEN];        /* STA addr */
 584         __be16 len;             /* 6 */
 585         u8 dsap;                /* 0 */
 586         u8 ssap;                /* 0 */
 587         u8 control;
 588         u8 xid_info[3];
 589 } __packed;
 590
 591 static void ieee80211_send_layer2_update(struct sta_info *sta)
 592 {
 593         struct iapp_layer2_update *msg;
 594         struct sk_buff *skb;
 595
 596         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 597          * bridge devices */
 598
 599         skb = dev_alloc_skb(sizeof(*msg));
 600         if (!skb)
 601                 return;
 602         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 603
 604         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 605          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 606
 607         memset(msg->da, 0xff, ETH_ALEN);
 608         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 609         msg->len = htons(6);
 610         msg->dsap = 0;
 611         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 612         msg->control = 0xaf;    /* XID response lsb.1111F101.
 613                                  * F=0 (no poll command; unsolicited frame) */
 614         msg->xid_info[0] = 0x81;        /* XID format identifier */
 615         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 616         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 617
 618         skb->dev = sta->sdata->dev;
 619         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 620         memset(skb->cb, 0, sizeof(skb->cb));
 621         netif_rx_ni(skb);
 622 }
 623
 624 static void sta_apply_parameters(struct ieee80211_local *local,
 625                                  struct sta_info *sta,
 626                                  struct station_parameters *params)
 627 {
 628         unsigned long flags;
 629         u32 rates;
 630         int i, j;
 631         struct ieee80211_supported_band *sband;
 632         struct ieee80211_sub_if_data *sdata = sta->sdata;
 633         u32 mask, set;
 634
 635         sband = local->hw.wiphy->bands[local->oper_channel->band];
 636
 637         spin_lock_irqsave(&sta->flaglock, flags);
 638         mask = params->sta_flags_mask;
 639         set = params->sta_flags_set;
 640
 641         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 642                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 643                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 644                         sta->flags |= WLAN_STA_AUTHORIZED;
 645         }
 646
 647         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 648                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 649                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 650                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 651         }
 652
 653         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 654                 sta->flags &= ~WLAN_STA_WME;
 655                 if (set & BIT(NL80211_STA_FLAG_WME))
 656                         sta->flags |= WLAN_STA_WME;
 657         }
 658
 659         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 660                 sta->flags &= ~WLAN_STA_MFP;
 661                 if (set & BIT(NL80211_STA_FLAG_MFP))
 662                         sta->flags |= WLAN_STA_MFP;
 663         }
 664         spin_unlock_irqrestore(&sta->flaglock, flags);
 665
 666         /*
 667          * cfg80211 validates this (1-2007) and allows setting the AID
 668          * only when creating a new station entry
 669          */
 670         if (params->aid)
 671                 sta->sta.aid = params->aid;
 672
 673         /*
 674          * FIXME: updating the following information is racy when this
 675          *        function is called from ieee80211_change_station().
 676          *        However, all this information should be static so
 677          *        maybe we should just reject attemps to change it.
 678          */
 679
 680         if (params->listen_interval >= 0)
 681                 sta->listen_interval = params->listen_interval;
 682
 683         if (params->supported_rates) {
 684                 rates = 0;
 685
 686                 for (i = 0; i < params->supported_rates_len; i++) {
 687                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 688                         for (j = 0; j < sband->n_bitrates; j++) {
 689                                 if (sband->bitrates[j].bitrate == rate)
 690                                         rates |= BIT(j);
 691                         }
 692                 }
 693                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 694         }
 695
 696         if (params->ht_capa)
 697                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 698                                                   params->ht_capa,
 699                                                   &sta->sta.ht_cap);
 700
 701         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 702                 switch (params->plink_action) {
 703                 case PLINK_ACTION_OPEN:
 704                         mesh_plink_open(sta);
 705                         break;
 706                 case PLINK_ACTION_BLOCK:
 707                         mesh_plink_block(sta);
 708                         break;
 709                 }
 710         }
 711 }
 712
 713 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 714                                  u8 *mac, struct station_parameters *params)
 715 {
 716         struct ieee80211_local *local = wiphy_priv(wiphy);
 717         struct sta_info *sta;
 718         struct ieee80211_sub_if_data *sdata;
 719         int err;
 720         int layer2_update;
 721
 722         if (params->vlan) {
 723                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 724
 725                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 726                     sdata->vif.type != NL80211_IFTYPE_AP)
 727                         return -EINVAL;
 728         } else
 729                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 730
 731         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 732                 return -EINVAL;
 733
 734         if (is_multicast_ether_addr(mac))
 735                 return -EINVAL;
 736
 737         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 738         if (!sta)
 739                 return -ENOMEM;
 740
 741         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 742
 743         sta_apply_parameters(local, sta, params);
 744
 745         rate_control_rate_init(sta);
 746
 747         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 748                 sdata->vif.type == NL80211_IFTYPE_AP;
 749
 750         err = sta_info_insert_rcu(sta);
 751         if (err) {
 752                 rcu_read_unlock();
 753                 return err;
 754         }
 755
 756         if (layer2_update)
 757                 ieee80211_send_layer2_update(sta);
 758
 759         rcu_read_unlock();
 760
 761         return 0;
 762 }
 763
 764 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 765                                  u8 *mac)
 766 {
 767         struct ieee80211_local *local = wiphy_priv(wiphy);
 768         struct ieee80211_sub_if_data *sdata;
 769
 770         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 771
 772         if (mac)
 773                 return sta_info_destroy_addr_bss(sdata, mac);
 774
 775         sta_info_flush(local, sdata);
 776         return 0;
 777 }
 778
 779 static int ieee80211_change_station(struct wiphy *wiphy,
 780                                     struct net_device *dev,
 781                                     u8 *mac,
 782                                     struct station_parameters *params)
 783 {
 784         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 785         struct ieee80211_local *local = wiphy_priv(wiphy);
 786         struct sta_info *sta;
 787         struct ieee80211_sub_if_data *vlansdata;
 788
 789         rcu_read_lock();
 790
 791         sta = sta_info_get_bss(sdata, mac);
 792         if (!sta) {
 793                 rcu_read_unlock();
 794                 return -ENOENT;
 795         }
 796
 797         if (params->vlan && params->vlan != sta->sdata->dev) {
 798                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 799
 800                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 801                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 802                         rcu_read_unlock();
 803                         return -EINVAL;
 804                 }
 805
 806                 if (params->vlan->ieee80211_ptr->use_4addr) {
 807                         if (vlansdata->u.vlan.sta) {
 808                                 rcu_read_unlock();
 809                                 return -EBUSY;
 810                         }
 811
 812                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 813                 }
 814
 815                 sta->sdata = vlansdata;
 816                 ieee80211_send_layer2_update(sta);
 817         }
 818
 819         sta_apply_parameters(local, sta, params);
 820
 821         rcu_read_unlock();
 822
 823         return 0;
 824 }
 825
 826 #ifdef CONFIG_MAC80211_MESH
 827 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 828                                  u8 *dst, u8 *next_hop)
 829 {
 830         struct ieee80211_sub_if_data *sdata;
 831         struct mesh_path *mpath;
 832         struct sta_info *sta;
 833         int err;
 834
 835         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 836
 837         rcu_read_lock();
 838         sta = sta_info_get(sdata, next_hop);
 839         if (!sta) {
 840                 rcu_read_unlock();
 841                 return -ENOENT;
 842         }
 843
 844         err = mesh_path_add(dst, sdata);
 845         if (err) {
 846                 rcu_read_unlock();
 847                 return err;
 848         }
 849
 850         mpath = mesh_path_lookup(dst, sdata);
 851         if (!mpath) {
 852                 rcu_read_unlock();
 853                 return -ENXIO;
 854         }
 855         mesh_path_fix_nexthop(mpath, sta);
 856
 857         rcu_read_unlock();
 858         return 0;
 859 }
 860
 861 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 862                                  u8 *dst)
 863 {
 864         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 865
 866         if (dst)
 867                 return mesh_path_del(dst, sdata);
 868
 869         mesh_path_flush(sdata);
 870         return 0;
 871 }
 872
 873 static int ieee80211_change_mpath(struct wiphy *wiphy,
 874                                     struct net_device *dev,
 875                                     u8 *dst, u8 *next_hop)
 876 {
 877         struct ieee80211_sub_if_data *sdata;
 878         struct mesh_path *mpath;
 879         struct sta_info *sta;
 880
 881         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 882
 883         rcu_read_lock();
 884
 885         sta = sta_info_get(sdata, next_hop);
 886         if (!sta) {
 887                 rcu_read_unlock();
 888                 return -ENOENT;
 889         }
 890
 891         mpath = mesh_path_lookup(dst, sdata);
 892         if (!mpath) {
 893                 rcu_read_unlock();
 894                 return -ENOENT;
 895         }
 896
 897         mesh_path_fix_nexthop(mpath, sta);
 898
 899         rcu_read_unlock();
 900         return 0;
 901 }
 902
 903 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 904                             struct mpath_info *pinfo)
 905 {
 906         if (mpath->next_hop)
 907                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 908         else
 909                 memset(next_hop, 0, ETH_ALEN);
 910
 911         pinfo->generation = mesh_paths_generation;
 912
 913         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 914                         MPATH_INFO_SN |
 915                         MPATH_INFO_METRIC |
 916                         MPATH_INFO_EXPTIME |
 917                         MPATH_INFO_DISCOVERY_TIMEOUT |
 918                         MPATH_INFO_DISCOVERY_RETRIES |
 919                         MPATH_INFO_FLAGS;
 920
 921         pinfo->frame_qlen = mpath->frame_queue.qlen;
 922         pinfo->sn = mpath->sn;
 923         pinfo->metric = mpath->metric;
 924         if (time_before(jiffies, mpath->exp_time))
 925                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 926         pinfo->discovery_timeout =
 927                         jiffies_to_msecs(mpath->discovery_timeout);
 928         pinfo->discovery_retries = mpath->discovery_retries;
 929         pinfo->flags = 0;
 930         if (mpath->flags & MESH_PATH_ACTIVE)
 931                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 932         if (mpath->flags & MESH_PATH_RESOLVING)
 933                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 934         if (mpath->flags & MESH_PATH_SN_VALID)
 935                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 936         if (mpath->flags & MESH_PATH_FIXED)
 937                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 938         if (mpath->flags & MESH_PATH_RESOLVING)
 939                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 940
 941         pinfo->flags = mpath->flags;
 942 }
 943
 944 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 945                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 946
 947 {
 948         struct ieee80211_sub_if_data *sdata;
 949         struct mesh_path *mpath;
 950
 951         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 952
 953         rcu_read_lock();
 954         mpath = mesh_path_lookup(dst, sdata);
 955         if (!mpath) {
 956                 rcu_read_unlock();
 957                 return -ENOENT;
 958         }
 959         memcpy(dst, mpath->dst, ETH_ALEN);
 960         mpath_set_pinfo(mpath, next_hop, pinfo);
 961         rcu_read_unlock();
 962         return 0;
 963 }
 964
 965 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 966                                  int idx, u8 *dst, u8 *next_hop,
 967                                  struct mpath_info *pinfo)
 968 {
 969         struct ieee80211_sub_if_data *sdata;
 970         struct mesh_path *mpath;
 971
 972         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 973
 974         rcu_read_lock();
 975         mpath = mesh_path_lookup_by_idx(idx, sdata);
 976         if (!mpath) {
 977                 rcu_read_unlock();
 978                 return -ENOENT;
 979         }
 980         memcpy(dst, mpath->dst, ETH_ALEN);
 981         mpath_set_pinfo(mpath, next_hop, pinfo);
 982         rcu_read_unlock();
 983         return 0;
 984 }
 985
 986 static int ieee80211_get_mesh_params(struct wiphy *wiphy,
 987                                 struct net_device *dev,
 988                                 struct mesh_config *conf)
 989 {
 990         struct ieee80211_sub_if_data *sdata;
 991         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 992
 993         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
 994         return 0;
 995 }
 996
 997 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
 998 {
 999         return (mask >> (parm-1)) & 0x1;
1000 }
1001
1002 static int ieee80211_set_mesh_params(struct wiphy *wiphy,
1003                                 struct net_device *dev,
1004                                 const struct mesh_config *nconf, u32 mask)
1005 {
1006         struct mesh_config *conf;
1007         struct ieee80211_sub_if_data *sdata;
1008         struct ieee80211_if_mesh *ifmsh;
1009
1010         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1011         ifmsh = &sdata->u.mesh;
1012
1013         /* Set the config options which we are interested in setting */
1014         conf = &(sdata->u.mesh.mshcfg);
1015         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1016                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1017         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1018                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1019         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1020                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1021         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1022                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1023         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1024                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1025         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1026                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1027         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1028                 conf->dot11MeshTTL = nconf->element_ttl;
1029         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1030                 conf->auto_open_plinks = nconf->auto_open_plinks;
1031         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1032                 conf->dot11MeshHWMPmaxPREQretries =
1033                         nconf->dot11MeshHWMPmaxPREQretries;
1034         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1035                 conf->path_refresh_time = nconf->path_refresh_time;
1036         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1037                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1038         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1039                 conf->dot11MeshHWMPactivePathTimeout =
1040                         nconf->dot11MeshHWMPactivePathTimeout;
1041         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1042                 conf->dot11MeshHWMPpreqMinInterval =
1043                         nconf->dot11MeshHWMPpreqMinInterval;
1044         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1045                            mask))
1046                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1047                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1048         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1049                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1050                 ieee80211_mesh_root_setup(ifmsh);
1051         }
1052         return 0;
1053 }
1054
1055 #endif
1056
1057 static int ieee80211_change_bss(struct wiphy *wiphy,
1058                                 struct net_device *dev,
1059                                 struct bss_parameters *params)
1060 {
1061         struct ieee80211_sub_if_data *sdata;
1062         u32 changed = 0;
1063
1064         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1065
1066         if (params->use_cts_prot >= 0) {
1067                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1068                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1069         }
1070         if (params->use_short_preamble >= 0) {
1071                 sdata->vif.bss_conf.use_short_preamble =
1072                         params->use_short_preamble;
1073                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1074         }
1075
1076         if (!sdata->vif.bss_conf.use_short_slot &&
1077             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1078                 sdata->vif.bss_conf.use_short_slot = true;
1079                 changed |= BSS_CHANGED_ERP_SLOT;
1080         }
1081
1082         if (params->use_short_slot_time >= 0) {
1083                 sdata->vif.bss_conf.use_short_slot =
1084                         params->use_short_slot_time;
1085                 changed |= BSS_CHANGED_ERP_SLOT;
1086         }
1087
1088         if (params->basic_rates) {
1089                 int i, j;
1090                 u32 rates = 0;
1091                 struct ieee80211_local *local = wiphy_priv(wiphy);
1092                 struct ieee80211_supported_band *sband =
1093                         wiphy->bands[local->oper_channel->band];
1094
1095                 for (i = 0; i < params->basic_rates_len; i++) {
1096                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1097                         for (j = 0; j < sband->n_bitrates; j++) {
1098                                 if (sband->bitrates[j].bitrate == rate)
1099                                         rates |= BIT(j);
1100                         }
1101                 }
1102                 sdata->vif.bss_conf.basic_rates = rates;
1103                 changed |= BSS_CHANGED_BASIC_RATES;
1104         }
1105
1106         if (params->ap_isolate >= 0) {
1107                 if (params->ap_isolate)
1108                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1109                 else
1110                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1111         }
1112
1113         ieee80211_bss_info_change_notify(sdata, changed);
1114
1115         return 0;
1116 }
1117
1118 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1119                                     struct ieee80211_txq_params *params)
1120 {
1121         struct ieee80211_local *local = wiphy_priv(wiphy);
1122         struct ieee80211_tx_queue_params p;
1123
1124         if (!local->ops->conf_tx)
1125                 return -EOPNOTSUPP;
1126
1127         memset(&p, 0, sizeof(p));
1128         p.aifs = params->aifs;
1129         p.cw_max = params->cwmax;
1130         p.cw_min = params->cwmin;
1131         p.txop = params->txop;
1132
1133         /*
1134          * Setting tx queue params disables u-apsd because it's only
1135          * called in master mode.
1136          */
1137         p.uapsd = false;
1138
1139         if (drv_conf_tx(local, params->queue, &p)) {
1140                 wiphy_debug(local->hw.wiphy,
1141                             "failed to set TX queue parameters for queue %d\n",
1142                             params->queue);
1143                 return -EINVAL;
1144         }
1145
1146         return 0;
1147 }
1148
1149 static int ieee80211_set_channel(struct wiphy *wiphy,
1150                                  struct net_device *netdev,
1151                                  struct ieee80211_channel *chan,
1152                                  enum nl80211_channel_type channel_type)
1153 {
1154         struct ieee80211_local *local = wiphy_priv(wiphy);
1155         struct ieee80211_sub_if_data *sdata = NULL;
1156
1157         if (netdev)
1158                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1159
1160         switch (ieee80211_get_channel_mode(local, NULL)) {
1161         case CHAN_MODE_HOPPING:
1162                 return -EBUSY;
1163         case CHAN_MODE_FIXED:
1164                 if (local->oper_channel != chan)
1165                         return -EBUSY;
1166                 if (!sdata && local->_oper_channel_type == channel_type)
1167                         return 0;
1168                 break;
1169         case CHAN_MODE_UNDEFINED:
1170                 break;
1171         }
1172
1173         local->oper_channel = chan;
1174
1175         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1176                 return -EBUSY;
1177
1178         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1179         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
1180                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1181
1182         return 0;
1183 }
1184
1185 #ifdef CONFIG_PM
1186 static int ieee80211_suspend(struct wiphy *wiphy)
1187 {
1188         return __ieee80211_suspend(wiphy_priv(wiphy));
1189 }
1190
1191 static int ieee80211_resume(struct wiphy *wiphy)
1192 {
1193         return __ieee80211_resume(wiphy_priv(wiphy));
1194 }
1195 #else
1196 #define ieee80211_suspend NULL
1197 #define ieee80211_resume NULL
1198 #endif
1199
1200 static int ieee80211_scan(struct wiphy *wiphy,
1201                           struct net_device *dev,
1202                           struct cfg80211_scan_request *req)
1203 {
1204         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1205
1206         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1207         case NL80211_IFTYPE_STATION:
1208         case NL80211_IFTYPE_ADHOC:
1209         case NL80211_IFTYPE_MESH_POINT:
1210         case NL80211_IFTYPE_P2P_CLIENT:
1211                 break;
1212         case NL80211_IFTYPE_P2P_GO:
1213                 if (sdata->local->ops->hw_scan)
1214                         break;
1215                 /* FIXME: implement NoA while scanning in software */
1216                 return -EOPNOTSUPP;
1217         case NL80211_IFTYPE_AP:
1218                 if (sdata->u.ap.beacon)
1219                         return -EOPNOTSUPP;
1220                 break;
1221         default:
1222                 return -EOPNOTSUPP;
1223         }
1224
1225         return ieee80211_request_scan(sdata, req);
1226 }
1227
1228 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1229                           struct cfg80211_auth_request *req)
1230 {
1231         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1232 }
1233
1234 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1235                            struct cfg80211_assoc_request *req)
1236 {
1237         struct ieee80211_local *local = wiphy_priv(wiphy);
1238         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1239
1240         switch (ieee80211_get_channel_mode(local, sdata)) {
1241         case CHAN_MODE_HOPPING:
1242                 return -EBUSY;
1243         case CHAN_MODE_FIXED:
1244                 if (local->oper_channel == req->bss->channel)
1245                         break;
1246                 return -EBUSY;
1247         case CHAN_MODE_UNDEFINED:
1248                 break;
1249         }
1250
1251         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1252 }
1253
1254 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1255                             struct cfg80211_deauth_request *req,
1256                             void *cookie)
1257 {
1258         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1259                                     req, cookie);
1260 }
1261
1262 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1263                               struct cfg80211_disassoc_request *req,
1264                               void *cookie)
1265 {
1266         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1267                                       req, cookie);
1268 }
1269
1270 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1271                                struct cfg80211_ibss_params *params)
1272 {
1273         struct ieee80211_local *local = wiphy_priv(wiphy);
1274         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1275
1276         switch (ieee80211_get_channel_mode(local, sdata)) {
1277         case CHAN_MODE_HOPPING:
1278                 return -EBUSY;
1279         case CHAN_MODE_FIXED:
1280                 if (!params->channel_fixed)
1281                         return -EBUSY;
1282                 if (local->oper_channel == params->channel)
1283                         break;
1284                 return -EBUSY;
1285         case CHAN_MODE_UNDEFINED:
1286                 break;
1287         }
1288
1289         return ieee80211_ibss_join(sdata, params);
1290 }
1291
1292 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1293 {
1294         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1295
1296         return ieee80211_ibss_leave(sdata);
1297 }
1298
1299 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1300 {
1301         struct ieee80211_local *local = wiphy_priv(wiphy);
1302         int err;
1303
1304         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1305                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1306
1307                 if (err)
1308                         return err;
1309         }
1310
1311         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1312                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1313
1314                 if (err)
1315                         return err;
1316         }
1317
1318         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1319                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1320
1321                 if (err)
1322                         return err;
1323         }
1324
1325         if (changed & WIPHY_PARAM_RETRY_SHORT)
1326                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1327         if (changed & WIPHY_PARAM_RETRY_LONG)
1328                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1329         if (changed &
1330             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1331                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1332
1333         return 0;
1334 }
1335
1336 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1337                                   enum nl80211_tx_power_setting type, int mbm)
1338 {
1339         struct ieee80211_local *local = wiphy_priv(wiphy);
1340         struct ieee80211_channel *chan = local->hw.conf.channel;
1341         u32 changes = 0;
1342
1343         switch (type) {
1344         case NL80211_TX_POWER_AUTOMATIC:
1345                 local->user_power_level = -1;
1346                 break;
1347         case NL80211_TX_POWER_LIMITED:
1348                 if (mbm < 0 || (mbm % 100))
1349                         return -EOPNOTSUPP;
1350                 local->user_power_level = MBM_TO_DBM(mbm);
1351                 break;
1352         case NL80211_TX_POWER_FIXED:
1353                 if (mbm < 0 || (mbm % 100))
1354                         return -EOPNOTSUPP;
1355                 /* TODO: move to cfg80211 when it knows the channel */
1356                 if (MBM_TO_DBM(mbm) > chan->max_power)
1357                         return -EINVAL;
1358                 local->user_power_level = MBM_TO_DBM(mbm);
1359                 break;
1360         }
1361
1362         ieee80211_hw_config(local, changes);
1363
1364         return 0;
1365 }
1366
1367 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1368 {
1369         struct ieee80211_local *local = wiphy_priv(wiphy);
1370
1371         *dbm = local->hw.conf.power_level;
1372
1373         return 0;
1374 }
1375
1376 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1377                                   const u8 *addr)
1378 {
1379         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1380
1381         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1382
1383         return 0;
1384 }
1385
1386 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1387 {
1388         struct ieee80211_local *local = wiphy_priv(wiphy);
1389
1390         drv_rfkill_poll(local);
1391 }
1392
1393 #ifdef CONFIG_NL80211_TESTMODE
1394 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1395 {
1396         struct ieee80211_local *local = wiphy_priv(wiphy);
1397
1398         if (!local->ops->testmode_cmd)
1399                 return -EOPNOTSUPP;
1400
1401         return local->ops->testmode_cmd(&local->hw, data, len);
1402 }
1403 #endif
1404
1405 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1406                              enum ieee80211_smps_mode smps_mode)
1407 {
1408         const u8 *ap;
1409         enum ieee80211_smps_mode old_req;
1410         int err;
1411
1412         old_req = sdata->u.mgd.req_smps;
1413         sdata->u.mgd.req_smps = smps_mode;
1414
1415         if (old_req == smps_mode &&
1416             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1417                 return 0;
1418
1419         /*
1420          * If not associated, or current association is not an HT
1421          * association, there's no need to send an action frame.
1422          */
1423         if (!sdata->u.mgd.associated ||
1424             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1425                 mutex_lock(&sdata->local->iflist_mtx);
1426                 ieee80211_recalc_smps(sdata->local);
1427                 mutex_unlock(&sdata->local->iflist_mtx);
1428                 return 0;
1429         }
1430
1431         ap = sdata->u.mgd.associated->bssid;
1432
1433         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1434                 if (sdata->u.mgd.powersave)
1435                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1436                 else
1437                         smps_mode = IEEE80211_SMPS_OFF;
1438         }
1439
1440         /* send SM PS frame to AP */
1441         err = ieee80211_send_smps_action(sdata, smps_mode,
1442                                          ap, ap);
1443         if (err)
1444                 sdata->u.mgd.req_smps = old_req;
1445
1446         return err;
1447 }
1448
1449 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1450                                     bool enabled, int timeout)
1451 {
1452         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1453         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1454
1455         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1456                 return -EOPNOTSUPP;
1457
1458         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1459                 return -EOPNOTSUPP;
1460
1461         if (enabled == sdata->u.mgd.powersave &&
1462             timeout == local->dynamic_ps_forced_timeout)
1463                 return 0;
1464
1465         sdata->u.mgd.powersave = enabled;
1466         local->dynamic_ps_forced_timeout = timeout;
1467
1468         /* no change, but if automatic follow powersave */
1469         mutex_lock(&sdata->u.mgd.mtx);
1470         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1471         mutex_unlock(&sdata->u.mgd.mtx);
1472
1473         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1474                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1475
1476         ieee80211_recalc_ps(local, -1);
1477
1478         return 0;
1479 }
1480
1481 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1482                                          struct net_device *dev,
1483                                          s32 rssi_thold, u32 rssi_hyst)
1484 {
1485         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1486         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1487         struct ieee80211_vif *vif = &sdata->vif;
1488         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1489
1490         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1491             rssi_hyst == bss_conf->cqm_rssi_hyst)
1492                 return 0;
1493
1494         bss_conf->cqm_rssi_thold = rssi_thold;
1495         bss_conf->cqm_rssi_hyst = rssi_hyst;
1496
1497         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1498                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1499                         return -EOPNOTSUPP;
1500                 return 0;
1501         }
1502
1503         /* tell the driver upon association, unless already associated */
1504         if (sdata->u.mgd.associated)
1505                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1506
1507         return 0;
1508 }
1509
1510 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1511                                       struct net_device *dev,
1512                                       const u8 *addr,
1513                                       const struct cfg80211_bitrate_mask *mask)
1514 {
1515         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1516         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1517         int i;
1518
1519         /*
1520          * This _could_ be supported by providing a hook for
1521          * drivers for this function, but at this point it
1522          * doesn't seem worth bothering.
1523          */
1524         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1525                 return -EOPNOTSUPP;
1526
1527
1528         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1529                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1530
1531         return 0;
1532 }
1533
1534 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1535                                        struct net_device *dev,
1536                                        struct ieee80211_channel *chan,
1537                                        enum nl80211_channel_type channel_type,
1538                                        unsigned int duration,
1539                                        u64 *cookie)
1540 {
1541         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1542
1543         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1544                                               duration, cookie);
1545 }
1546
1547 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1548                                               struct net_device *dev,
1549                                               u64 cookie)
1550 {
1551         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1552
1553         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1554 }
1555
1556 static enum work_done_result
1557 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1558 {
1559         /*
1560          * Use the data embedded in the work struct for reporting
1561          * here so if the driver mangled the SKB before dropping
1562          * it (which is the only way we really should get here)
1563          * then we don't report mangled data.
1564          *
1565          * If there was no wait time, then by the time we get here
1566          * the driver will likely not have reported the status yet,
1567          * so in that case userspace will have to deal with it.
1568          */
1569
1570         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1571                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1572                                         (unsigned long) wk->offchan_tx.frame,
1573                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1574
1575         return WORK_DONE_DESTROY;
1576 }
1577
1578 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1579                              struct ieee80211_channel *chan, bool offchan,
1580                              enum nl80211_channel_type channel_type,
1581                              bool channel_type_valid, unsigned int wait,
1582                              const u8 *buf, size_t len, u64 *cookie)
1583 {
1584         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1585         struct ieee80211_local *local = sdata->local;
1586         struct sk_buff *skb;
1587         struct sta_info *sta;
1588         struct ieee80211_work *wk;
1589         const struct ieee80211_mgmt *mgmt = (void *)buf;
1590         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1591                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1592         bool is_offchan = false;
1593
1594         /* Check that we are on the requested channel for transmission */
1595         if (chan != local->tmp_channel &&
1596             chan != local->oper_channel)
1597                 is_offchan = true;
1598         if (channel_type_valid &&
1599             (channel_type != local->tmp_channel_type &&
1600              channel_type != local->_oper_channel_type))
1601                 is_offchan = true;
1602
1603         if (is_offchan && !offchan)
1604                 return -EBUSY;
1605
1606         switch (sdata->vif.type) {
1607         case NL80211_IFTYPE_ADHOC:
1608         case NL80211_IFTYPE_AP:
1609         case NL80211_IFTYPE_AP_VLAN:
1610         case NL80211_IFTYPE_P2P_GO:
1611                 if (!ieee80211_is_action(mgmt->frame_control) ||
1612                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1613                         break;
1614                 rcu_read_lock();
1615                 sta = sta_info_get(sdata, mgmt->da);
1616                 rcu_read_unlock();
1617                 if (!sta)
1618                         return -ENOLINK;
1619                 break;
1620         case NL80211_IFTYPE_STATION:
1621         case NL80211_IFTYPE_P2P_CLIENT:
1622                 break;
1623         default:
1624                 return -EOPNOTSUPP;
1625         }
1626
1627         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1628         if (!skb)
1629                 return -ENOMEM;
1630         skb_reserve(skb, local->hw.extra_tx_headroom);
1631
1632         memcpy(skb_put(skb, len), buf, len);
1633
1634         IEEE80211_SKB_CB(skb)->flags = flags;
1635
1636         skb->dev = sdata->dev;
1637
1638         *cookie = (unsigned long) skb;
1639
1640         /*
1641          * Can transmit right away if the channel was the
1642          * right one and there's no wait involved... If a
1643          * wait is involved, we might otherwise not be on
1644          * the right channel for long enough!
1645          */
1646         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1647                 ieee80211_tx_skb(sdata, skb);
1648                 return 0;
1649         }
1650
1651         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1652         if (!wk) {
1653                 kfree_skb(skb);
1654                 return -ENOMEM;
1655         }
1656
1657         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1658         wk->chan = chan;
1659         wk->sdata = sdata;
1660         wk->done = ieee80211_offchan_tx_done;
1661         wk->offchan_tx.frame = skb;
1662         wk->offchan_tx.wait = wait;
1663         wk->ie_len = len;
1664         memcpy(wk->ie, buf, len);
1665
1666         ieee80211_add_work(wk);
1667         return 0;
1668 }
1669
1670 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1671                                          struct net_device *dev,
1672                                          u64 cookie)
1673 {
1674         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1675         struct ieee80211_local *local = sdata->local;
1676         struct ieee80211_work *wk;
1677         int ret = -ENOENT;
1678
1679         mutex_lock(&local->mtx);
1680         list_for_each_entry(wk, &local->work_list, list) {
1681                 if (wk->sdata != sdata)
1682                         continue;
1683
1684                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
1685                         continue;
1686
1687                 if (cookie != (unsigned long) wk->offchan_tx.frame)
1688                         continue;
1689
1690                 wk->timeout = jiffies;
1691
1692                 ieee80211_queue_work(&local->hw, &local->work_work);
1693                 ret = 0;
1694                 break;
1695         }
1696         mutex_unlock(&local->mtx);
1697
1698         return ret;
1699 }
1700
1701 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
1702                                           struct net_device *dev,
1703                                           u16 frame_type, bool reg)
1704 {
1705         struct ieee80211_local *local = wiphy_priv(wiphy);
1706
1707         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
1708                 return;
1709
1710         if (reg)
1711                 local->probe_req_reg++;
1712         else
1713                 local->probe_req_reg--;
1714
1715         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
1716 }
1717
1718 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
1719 {
1720         struct ieee80211_local *local = wiphy_priv(wiphy);
1721
1722         if (local->started)
1723                 return -EOPNOTSUPP;
1724
1725         return drv_set_antenna(local, tx_ant, rx_ant);
1726 }
1727
1728 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
1729 {
1730         struct ieee80211_local *local = wiphy_priv(wiphy);
1731
1732         return drv_get_antenna(local, tx_ant, rx_ant);
1733 }
1734
1735 struct cfg80211_ops mac80211_config_ops = {
1736         .add_virtual_intf = ieee80211_add_iface,
1737         .del_virtual_intf = ieee80211_del_iface,
1738         .change_virtual_intf = ieee80211_change_iface,
1739         .add_key = ieee80211_add_key,
1740         .del_key = ieee80211_del_key,
1741         .get_key = ieee80211_get_key,
1742         .set_default_key = ieee80211_config_default_key,
1743         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
1744         .add_beacon = ieee80211_add_beacon,
1745         .set_beacon = ieee80211_set_beacon,
1746         .del_beacon = ieee80211_del_beacon,
1747         .add_station = ieee80211_add_station,
1748         .del_station = ieee80211_del_station,
1749         .change_station = ieee80211_change_station,
1750         .get_station = ieee80211_get_station,
1751         .dump_station = ieee80211_dump_station,
1752         .dump_survey = ieee80211_dump_survey,
1753 #ifdef CONFIG_MAC80211_MESH
1754         .add_mpath = ieee80211_add_mpath,
1755         .del_mpath = ieee80211_del_mpath,
1756         .change_mpath = ieee80211_change_mpath,
1757         .get_mpath = ieee80211_get_mpath,
1758         .dump_mpath = ieee80211_dump_mpath,
1759         .set_mesh_params = ieee80211_set_mesh_params,
1760         .get_mesh_params = ieee80211_get_mesh_params,
1761 #endif
1762         .change_bss = ieee80211_change_bss,
1763         .set_txq_params = ieee80211_set_txq_params,
1764         .set_channel = ieee80211_set_channel,
1765         .suspend = ieee80211_suspend,
1766         .resume = ieee80211_resume,
1767         .scan = ieee80211_scan,
1768         .auth = ieee80211_auth,
1769         .assoc = ieee80211_assoc,
1770         .deauth = ieee80211_deauth,
1771         .disassoc = ieee80211_disassoc,
1772         .join_ibss = ieee80211_join_ibss,
1773         .leave_ibss = ieee80211_leave_ibss,
1774         .set_wiphy_params = ieee80211_set_wiphy_params,
1775         .set_tx_power = ieee80211_set_tx_power,
1776         .get_tx_power = ieee80211_get_tx_power,
1777         .set_wds_peer = ieee80211_set_wds_peer,
1778         .rfkill_poll = ieee80211_rfkill_poll,
1779         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
1780         .set_power_mgmt = ieee80211_set_power_mgmt,
1781         .set_bitrate_mask = ieee80211_set_bitrate_mask,
1782         .remain_on_channel = ieee80211_remain_on_channel,
1783         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
1784         .mgmt_tx = ieee80211_mgmt_tx,
1785         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
1786         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
1787         .mgmt_frame_register = ieee80211_mgmt_frame_register,
1788         .set_antenna = ieee80211_set_antenna,
1789         .get_antenna = ieee80211_get_antenna,
1790 };