SAFE public projects git trees. - safe/jmp/linux-2.6/blob - net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006, 2007 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 <net/net_namespace.h>
  13 #include <linux/rcupdate.h>
  14 #include <net/cfg80211.h>
  15 #include "ieee80211_i.h"
  16 #include "cfg.h"
  17 #include "ieee80211_rate.h"
  18 #include "mesh.h"
  19
  20 #define DEFAULT_RATES 0
  21
  22 static enum ieee80211_if_types
  23 nl80211_type_to_mac80211_type(enum nl80211_iftype type)
  24 {
  25         switch (type) {
  26         case NL80211_IFTYPE_UNSPECIFIED:
  27                 return IEEE80211_IF_TYPE_STA;
  28         case NL80211_IFTYPE_ADHOC:
  29                 return IEEE80211_IF_TYPE_IBSS;
  30         case NL80211_IFTYPE_STATION:
  31                 return IEEE80211_IF_TYPE_STA;
  32         case NL80211_IFTYPE_MONITOR:
  33                 return IEEE80211_IF_TYPE_MNTR;
  34 #ifdef CONFIG_MAC80211_MESH
  35         case NL80211_IFTYPE_MESH_POINT:
  36                 return IEEE80211_IF_TYPE_MESH_POINT;
  37 #endif
  38         default:
  39                 return IEEE80211_IF_TYPE_INVALID;
  40         }
  41 }
  42
  43 static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  44                                enum nl80211_iftype type, u32 *flags,
  45                                struct vif_params *params)
  46 {
  47         struct ieee80211_local *local = wiphy_priv(wiphy);
  48         enum ieee80211_if_types itype;
  49         struct net_device *dev;
  50         struct ieee80211_sub_if_data *sdata;
  51         int err;
  52
  53         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  54                 return -ENODEV;
  55
  56         itype = nl80211_type_to_mac80211_type(type);
  57         if (itype == IEEE80211_IF_TYPE_INVALID)
  58                 return -EINVAL;
  59
  60         err = ieee80211_if_add(local->mdev, name, &dev, itype, params);
  61         if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags)
  62                 return err;
  63
  64         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  65         sdata->u.mntr_flags = *flags;
  66         return 0;
  67 }
  68
  69 static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
  70 {
  71         struct ieee80211_local *local = wiphy_priv(wiphy);
  72         struct net_device *dev;
  73         char *name;
  74
  75         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  76                 return -ENODEV;
  77
  78         /* we're under RTNL */
  79         dev = __dev_get_by_index(&init_net, ifindex);
  80         if (!dev)
  81                 return 0;
  82
  83         name = dev->name;
  84
  85         return ieee80211_if_remove(local->mdev, name, -1);
  86 }
  87
  88 static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
  89                                   enum nl80211_iftype type, u32 *flags,
  90                                   struct vif_params *params)
  91 {
  92         struct ieee80211_local *local = wiphy_priv(wiphy);
  93         struct net_device *dev;
  94         enum ieee80211_if_types itype;
  95         struct ieee80211_sub_if_data *sdata;
  96
  97         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  98                 return -ENODEV;
  99
 100         /* we're under RTNL */
 101         dev = __dev_get_by_index(&init_net, ifindex);
 102         if (!dev)
 103                 return -ENODEV;
 104
 105         if (netif_running(dev))
 106                 return -EBUSY;
 107
 108         itype = nl80211_type_to_mac80211_type(type);
 109         if (itype == IEEE80211_IF_TYPE_INVALID)
 110                 return -EINVAL;
 111
 112         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 113
 114         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
 115                 return -EOPNOTSUPP;
 116
 117         ieee80211_if_reinit(dev);
 118         ieee80211_if_set_type(dev, itype);
 119
 120         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
 121                 ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
 122                                              params->mesh_id_len,
 123                                              params->mesh_id);
 124
 125         if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags)
 126                 return 0;
 127
 128         sdata->u.mntr_flags = *flags;
 129         return 0;
 130 }
 131
 132 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 133                              u8 key_idx, u8 *mac_addr,
 134                              struct key_params *params)
 135 {
 136         struct ieee80211_sub_if_data *sdata;
 137         struct sta_info *sta = NULL;
 138         enum ieee80211_key_alg alg;
 139         struct ieee80211_key *key;
 140
 141         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 142
 143         switch (params->cipher) {
 144         case WLAN_CIPHER_SUITE_WEP40:
 145         case WLAN_CIPHER_SUITE_WEP104:
 146                 alg = ALG_WEP;
 147                 break;
 148         case WLAN_CIPHER_SUITE_TKIP:
 149                 alg = ALG_TKIP;
 150                 break;
 151         case WLAN_CIPHER_SUITE_CCMP:
 152                 alg = ALG_CCMP;
 153                 break;
 154         default:
 155                 return -EINVAL;
 156         }
 157
 158         key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key);
 159         if (!key)
 160                 return -ENOMEM;
 161
 162         if (mac_addr) {
 163                 sta = sta_info_get(sdata->local, mac_addr);
 164                 if (!sta) {
 165                         ieee80211_key_free(key);
 166                         return -ENOENT;
 167                 }
 168         }
 169
 170         ieee80211_key_link(key, sdata, sta);
 171
 172         return 0;
 173 }
 174
 175 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 176                              u8 key_idx, u8 *mac_addr)
 177 {
 178         struct ieee80211_sub_if_data *sdata;
 179         struct sta_info *sta;
 180         int ret;
 181
 182         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 183
 184         if (mac_addr) {
 185                 sta = sta_info_get(sdata->local, mac_addr);
 186                 if (!sta)
 187                         return -ENOENT;
 188
 189                 ret = 0;
 190                 if (sta->key) {
 191                         ieee80211_key_free(sta->key);
 192                         WARN_ON(sta->key);
 193                 } else
 194                         ret = -ENOENT;
 195
 196                 return ret;
 197         }
 198
 199         if (!sdata->keys[key_idx])
 200                 return -ENOENT;
 201
 202         ieee80211_key_free(sdata->keys[key_idx]);
 203         WARN_ON(sdata->keys[key_idx]);
 204
 205         return 0;
 206 }
 207
 208 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 209                              u8 key_idx, u8 *mac_addr, void *cookie,
 210                              void (*callback)(void *cookie,
 211                                               struct key_params *params))
 212 {
 213         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 214         struct sta_info *sta = NULL;
 215         u8 seq[6] = {0};
 216         struct key_params params;
 217         struct ieee80211_key *key;
 218         u32 iv32;
 219         u16 iv16;
 220         int err = -ENOENT;
 221
 222         if (mac_addr) {
 223                 sta = sta_info_get(sdata->local, mac_addr);
 224                 if (!sta)
 225                         goto out;
 226
 227                 key = sta->key;
 228         } else
 229                 key = sdata->keys[key_idx];
 230
 231         if (!key)
 232                 goto out;
 233
 234         memset(&params, 0, sizeof(params));
 235
 236         switch (key->conf.alg) {
 237         case ALG_TKIP:
 238                 params.cipher = WLAN_CIPHER_SUITE_TKIP;
 239
 240                 iv32 = key->u.tkip.iv32;
 241                 iv16 = key->u.tkip.iv16;
 242
 243                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 244                     sdata->local->ops->get_tkip_seq)
 245                         sdata->local->ops->get_tkip_seq(
 246                                 local_to_hw(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 ALG_CCMP:
 260                 params.cipher = WLAN_CIPHER_SUITE_CCMP;
 261                 seq[0] = key->u.ccmp.tx_pn[5];
 262                 seq[1] = key->u.ccmp.tx_pn[4];
 263                 seq[2] = key->u.ccmp.tx_pn[3];
 264                 seq[3] = key->u.ccmp.tx_pn[2];
 265                 seq[4] = key->u.ccmp.tx_pn[1];
 266                 seq[5] = key->u.ccmp.tx_pn[0];
 267                 params.seq = seq;
 268                 params.seq_len = 6;
 269                 break;
 270         case ALG_WEP:
 271                 if (key->conf.keylen == 5)
 272                         params.cipher = WLAN_CIPHER_SUITE_WEP40;
 273                 else
 274                         params.cipher = WLAN_CIPHER_SUITE_WEP104;
 275                 break;
 276         }
 277
 278         params.key = key->conf.key;
 279         params.key_len = key->conf.keylen;
 280
 281         callback(cookie, &params);
 282         err = 0;
 283
 284  out:
 285         return err;
 286 }
 287
 288 static int ieee80211_config_default_key(struct wiphy *wiphy,
 289                                         struct net_device *dev,
 290                                         u8 key_idx)
 291 {
 292         struct ieee80211_sub_if_data *sdata;
 293
 294         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 295         ieee80211_set_default_key(sdata, key_idx);
 296
 297         return 0;
 298 }
 299
 300 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 301 {
 302         struct ieee80211_sub_if_data *sdata = sta->sdata;
 303
 304         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 305                         STATION_INFO_RX_BYTES |
 306                         STATION_INFO_TX_BYTES;
 307
 308         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 309         sinfo->rx_bytes = sta->rx_bytes;
 310         sinfo->tx_bytes = sta->tx_bytes;
 311
 312         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 313 #ifdef CONFIG_MAC80211_MESH
 314                 sinfo->filled |= STATION_INFO_LLID |
 315                                  STATION_INFO_PLID |
 316                                  STATION_INFO_PLINK_STATE;
 317
 318                 sinfo->llid = le16_to_cpu(sta->llid);
 319                 sinfo->plid = le16_to_cpu(sta->plid);
 320                 sinfo->plink_state = sta->plink_state;
 321 #endif
 322         }
 323 }
 324
 325
 326 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 327                                  int idx, u8 *mac, struct station_info *sinfo)
 328 {
 329         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 330         struct sta_info *sta;
 331         int ret = -ENOENT;
 332
 333         rcu_read_lock();
 334
 335         sta = sta_info_get_by_idx(local, idx, dev);
 336         if (sta) {
 337                 ret = 0;
 338                 memcpy(mac, sta->addr, ETH_ALEN);
 339                 sta_set_sinfo(sta, sinfo);
 340         }
 341
 342         rcu_read_unlock();
 343
 344         return ret;
 345 }
 346
 347 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 348                                  u8 *mac, struct station_info *sinfo)
 349 {
 350         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 351         struct sta_info *sta;
 352         int ret = -ENOENT;
 353
 354         rcu_read_lock();
 355
 356         /* XXX: verify sta->dev == dev */
 357
 358         sta = sta_info_get(local, mac);
 359         if (sta) {
 360                 ret = 0;
 361                 sta_set_sinfo(sta, sinfo);
 362         }
 363
 364         rcu_read_unlock();
 365
 366         return ret;
 367 }
 368
 369 /*
 370  * This handles both adding a beacon and setting new beacon info
 371  */
 372 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 373                                    struct beacon_parameters *params)
 374 {
 375         struct beacon_data *new, *old;
 376         int new_head_len, new_tail_len;
 377         int size;
 378         int err = -EINVAL;
 379
 380         old = sdata->u.ap.beacon;
 381
 382         /* head must not be zero-length */
 383         if (params->head && !params->head_len)
 384                 return -EINVAL;
 385
 386         /*
 387          * This is a kludge. beacon interval should really be part
 388          * of the beacon information.
 389          */
 390         if (params->interval) {
 391                 sdata->local->hw.conf.beacon_int = params->interval;
 392                 if (ieee80211_hw_config(sdata->local))
 393                         return -EINVAL;
 394                 /*
 395                  * We updated some parameter so if below bails out
 396                  * it's not an error.
 397                  */
 398                 err = 0;
 399         }
 400
 401         /* Need to have a beacon head if we don't have one yet */
 402         if (!params->head && !old)
 403                 return err;
 404
 405         /* sorry, no way to start beaconing without dtim period */
 406         if (!params->dtim_period && !old)
 407                 return err;
 408
 409         /* new or old head? */
 410         if (params->head)
 411                 new_head_len = params->head_len;
 412         else
 413                 new_head_len = old->head_len;
 414
 415         /* new or old tail? */
 416         if (params->tail || !old)
 417                 /* params->tail_len will be zero for !params->tail */
 418                 new_tail_len = params->tail_len;
 419         else
 420                 new_tail_len = old->tail_len;
 421
 422         size = sizeof(*new) + new_head_len + new_tail_len;
 423
 424         new = kzalloc(size, GFP_KERNEL);
 425         if (!new)
 426                 return -ENOMEM;
 427
 428         /* start filling the new info now */
 429
 430         /* new or old dtim period? */
 431         if (params->dtim_period)
 432                 new->dtim_period = params->dtim_period;
 433         else
 434                 new->dtim_period = old->dtim_period;
 435
 436         /*
 437          * pointers go into the block we allocated,
 438          * memory is | beacon_data | head | tail |
 439          */
 440         new->head = ((u8 *) new) + sizeof(*new);
 441         new->tail = new->head + new_head_len;
 442         new->head_len = new_head_len;
 443         new->tail_len = new_tail_len;
 444
 445         /* copy in head */
 446         if (params->head)
 447                 memcpy(new->head, params->head, new_head_len);
 448         else
 449                 memcpy(new->head, old->head, new_head_len);
 450
 451         /* copy in optional tail */
 452         if (params->tail)
 453                 memcpy(new->tail, params->tail, new_tail_len);
 454         else
 455                 if (old)
 456                         memcpy(new->tail, old->tail, new_tail_len);
 457
 458         rcu_assign_pointer(sdata->u.ap.beacon, new);
 459
 460         synchronize_rcu();
 461
 462         kfree(old);
 463
 464         return ieee80211_if_config_beacon(sdata->dev);
 465 }
 466
 467 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 468                                 struct beacon_parameters *params)
 469 {
 470         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 471         struct beacon_data *old;
 472
 473         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 474                 return -EINVAL;
 475
 476         old = sdata->u.ap.beacon;
 477
 478         if (old)
 479                 return -EALREADY;
 480
 481         return ieee80211_config_beacon(sdata, params);
 482 }
 483
 484 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 485                                 struct beacon_parameters *params)
 486 {
 487         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 488         struct beacon_data *old;
 489
 490         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 491                 return -EINVAL;
 492
 493         old = sdata->u.ap.beacon;
 494
 495         if (!old)
 496                 return -ENOENT;
 497
 498         return ieee80211_config_beacon(sdata, params);
 499 }
 500
 501 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 502 {
 503         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 504         struct beacon_data *old;
 505
 506         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 507                 return -EINVAL;
 508
 509         old = sdata->u.ap.beacon;
 510
 511         if (!old)
 512                 return -ENOENT;
 513
 514         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 515         synchronize_rcu();
 516         kfree(old);
 517
 518         return ieee80211_if_config_beacon(dev);
 519 }
 520
 521 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 522 struct iapp_layer2_update {
 523         u8 da[ETH_ALEN];        /* broadcast */
 524         u8 sa[ETH_ALEN];        /* STA addr */
 525         __be16 len;             /* 6 */
 526         u8 dsap;                /* 0 */
 527         u8 ssap;                /* 0 */
 528         u8 control;
 529         u8 xid_info[3];
 530 } __attribute__ ((packed));
 531
 532 static void ieee80211_send_layer2_update(struct sta_info *sta)
 533 {
 534         struct iapp_layer2_update *msg;
 535         struct sk_buff *skb;
 536
 537         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 538          * bridge devices */
 539
 540         skb = dev_alloc_skb(sizeof(*msg));
 541         if (!skb)
 542                 return;
 543         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 544
 545         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 546          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 547
 548         memset(msg->da, 0xff, ETH_ALEN);
 549         memcpy(msg->sa, sta->addr, ETH_ALEN);
 550         msg->len = htons(6);
 551         msg->dsap = 0;
 552         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 553         msg->control = 0xaf;    /* XID response lsb.1111F101.
 554                                  * F=0 (no poll command; unsolicited frame) */
 555         msg->xid_info[0] = 0x81;        /* XID format identifier */
 556         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 557         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 558
 559         skb->dev = sta->sdata->dev;
 560         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 561         memset(skb->cb, 0, sizeof(skb->cb));
 562         netif_rx(skb);
 563 }
 564
 565 static void sta_apply_parameters(struct ieee80211_local *local,
 566                                  struct sta_info *sta,
 567                                  struct station_parameters *params)
 568 {
 569         u32 rates;
 570         int i, j;
 571         struct ieee80211_supported_band *sband;
 572         struct ieee80211_sub_if_data *sdata = sta->sdata;
 573
 574         if (params->station_flags & STATION_FLAG_CHANGED) {
 575                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 576                 if (params->station_flags & STATION_FLAG_AUTHORIZED)
 577                         sta->flags |= WLAN_STA_AUTHORIZED;
 578
 579                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 580                 if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE)
 581                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 582
 583                 sta->flags &= ~WLAN_STA_WME;
 584                 if (params->station_flags & STATION_FLAG_WME)
 585                         sta->flags |= WLAN_STA_WME;
 586         }
 587
 588         if (params->aid) {
 589                 sta->aid = params->aid;
 590                 if (sta->aid > IEEE80211_MAX_AID)
 591                         sta->aid = 0; /* XXX: should this be an error? */
 592         }
 593
 594         if (params->listen_interval >= 0)
 595                 sta->listen_interval = params->listen_interval;
 596
 597         if (params->supported_rates) {
 598                 rates = 0;
 599                 sband = local->hw.wiphy->bands[local->oper_channel->band];
 600
 601                 for (i = 0; i < params->supported_rates_len; i++) {
 602                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 603                         for (j = 0; j < sband->n_bitrates; j++) {
 604                                 if (sband->bitrates[j].bitrate == rate)
 605                                         rates |= BIT(j);
 606                         }
 607                 }
 608                 sta->supp_rates[local->oper_channel->band] = rates;
 609         }
 610
 611         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 612                 switch (params->plink_action) {
 613                 case PLINK_ACTION_OPEN:
 614                         mesh_plink_open(sta);
 615                         break;
 616                 case PLINK_ACTION_BLOCK:
 617                         mesh_plink_block(sta);
 618                         break;
 619                 }
 620         }
 621 }
 622
 623 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 624                                  u8 *mac, struct station_parameters *params)
 625 {
 626         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 627         struct sta_info *sta;
 628         struct ieee80211_sub_if_data *sdata;
 629
 630         /* Prevent a race with changing the rate control algorithm */
 631         if (!netif_running(dev))
 632                 return -ENETDOWN;
 633
 634         if (params->vlan) {
 635                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 636
 637                 if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN ||
 638                     sdata->vif.type != IEEE80211_IF_TYPE_AP)
 639                         return -EINVAL;
 640         } else
 641                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 642
 643         if (ieee80211_vif_is_mesh(&sdata->vif))
 644                 sta = mesh_plink_add(mac, DEFAULT_RATES, sdata);
 645         else
 646                 sta = sta_info_add(sdata, mac);
 647
 648         if (IS_ERR(sta))
 649                 return PTR_ERR(sta);
 650
 651         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN ||
 652             sdata->vif.type == IEEE80211_IF_TYPE_AP)
 653                 ieee80211_send_layer2_update(sta);
 654
 655         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 656
 657         sta_apply_parameters(local, sta, params);
 658
 659         rate_control_rate_init(sta, local);
 660
 661         return 0;
 662 }
 663
 664 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 665                                  u8 *mac)
 666 {
 667         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 668         struct ieee80211_local *local = sdata->local;
 669         struct sta_info *sta;
 670
 671         if (mac) {
 672                 /* XXX: get sta belonging to dev */
 673                 sta = sta_info_get(local, mac);
 674                 if (!sta)
 675                         return -ENOENT;
 676
 677                 sta_info_unlink(&sta);
 678
 679                 if (sta) {
 680                         synchronize_rcu();
 681                         sta_info_destroy(sta);
 682                 }
 683         } else
 684                 sta_info_flush(local, sdata);
 685
 686         return 0;
 687 }
 688
 689 static int ieee80211_change_station(struct wiphy *wiphy,
 690                                     struct net_device *dev,
 691                                     u8 *mac,
 692                                     struct station_parameters *params)
 693 {
 694         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 695         struct sta_info *sta;
 696         struct ieee80211_sub_if_data *vlansdata;
 697
 698         /* XXX: get sta belonging to dev */
 699         sta = sta_info_get(local, mac);
 700         if (!sta)
 701                 return -ENOENT;
 702
 703         if (params->vlan && params->vlan != sta->sdata->dev) {
 704                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 705
 706                 if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN ||
 707                     vlansdata->vif.type != IEEE80211_IF_TYPE_AP)
 708                         return -EINVAL;
 709
 710                 sta->sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 711                 ieee80211_send_layer2_update(sta);
 712         }
 713
 714         sta_apply_parameters(local, sta, params);
 715
 716         return 0;
 717 }
 718
 719 #ifdef CONFIG_MAC80211_MESH
 720 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 721                                  u8 *dst, u8 *next_hop)
 722 {
 723         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 724         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 725         struct mesh_path *mpath;
 726         struct sta_info *sta;
 727         int err;
 728
 729         if (!netif_running(dev))
 730                 return -ENETDOWN;
 731
 732         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 733                 return -ENOTSUPP;
 734
 735         rcu_read_lock();
 736         sta = sta_info_get(local, next_hop);
 737         if (!sta) {
 738                 rcu_read_unlock();
 739                 return -ENOENT;
 740         }
 741
 742         err = mesh_path_add(dst, dev);
 743         if (err) {
 744                 rcu_read_unlock();
 745                 return err;
 746         }
 747
 748         mpath = mesh_path_lookup(dst, dev);
 749         if (!mpath) {
 750                 rcu_read_unlock();
 751                 return -ENXIO;
 752         }
 753         mesh_path_fix_nexthop(mpath, sta);
 754
 755         rcu_read_unlock();
 756         return 0;
 757 }
 758
 759 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 760                                  u8 *dst)
 761 {
 762         if (dst)
 763                 return mesh_path_del(dst, dev, false);
 764
 765         mesh_path_flush(dev);
 766         return 0;
 767 }
 768
 769 static int ieee80211_change_mpath(struct wiphy *wiphy,
 770                                     struct net_device *dev,
 771                                     u8 *dst, u8 *next_hop)
 772 {
 773         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 774         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 775         struct mesh_path *mpath;
 776         struct sta_info *sta;
 777
 778         if (!netif_running(dev))
 779                 return -ENETDOWN;
 780
 781         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 782                 return -ENOTSUPP;
 783
 784         rcu_read_lock();
 785
 786         sta = sta_info_get(local, next_hop);
 787         if (!sta) {
 788                 rcu_read_unlock();
 789                 return -ENOENT;
 790         }
 791
 792         mpath = mesh_path_lookup(dst, dev);
 793         if (!mpath) {
 794                 rcu_read_unlock();
 795                 return -ENOENT;
 796         }
 797
 798         mesh_path_fix_nexthop(mpath, sta);
 799
 800         rcu_read_unlock();
 801         return 0;
 802 }
 803
 804 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 805                             struct mpath_info *pinfo)
 806 {
 807         if (mpath->next_hop)
 808                 memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN);
 809         else
 810                 memset(next_hop, 0, ETH_ALEN);
 811
 812         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 813                         MPATH_INFO_DSN |
 814                         MPATH_INFO_METRIC |
 815                         MPATH_INFO_EXPTIME |
 816                         MPATH_INFO_DISCOVERY_TIMEOUT |
 817                         MPATH_INFO_DISCOVERY_RETRIES |
 818                         MPATH_INFO_FLAGS;
 819
 820         pinfo->frame_qlen = mpath->frame_queue.qlen;
 821         pinfo->dsn = mpath->dsn;
 822         pinfo->metric = mpath->metric;
 823         if (time_before(jiffies, mpath->exp_time))
 824                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 825         pinfo->discovery_timeout =
 826                         jiffies_to_msecs(mpath->discovery_timeout);
 827         pinfo->discovery_retries = mpath->discovery_retries;
 828         pinfo->flags = 0;
 829         if (mpath->flags & MESH_PATH_ACTIVE)
 830                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 831         if (mpath->flags & MESH_PATH_RESOLVING)
 832                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 833         if (mpath->flags & MESH_PATH_DSN_VALID)
 834                 pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID;
 835         if (mpath->flags & MESH_PATH_FIXED)
 836                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 837         if (mpath->flags & MESH_PATH_RESOLVING)
 838                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 839
 840         pinfo->flags = mpath->flags;
 841 }
 842
 843 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 844                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 845
 846 {
 847         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 848         struct mesh_path *mpath;
 849
 850         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 851                 return -ENOTSUPP;
 852
 853         rcu_read_lock();
 854         mpath = mesh_path_lookup(dst, dev);
 855         if (!mpath) {
 856                 rcu_read_unlock();
 857                 return -ENOENT;
 858         }
 859         memcpy(dst, mpath->dst, ETH_ALEN);
 860         mpath_set_pinfo(mpath, next_hop, pinfo);
 861         rcu_read_unlock();
 862         return 0;
 863 }
 864
 865 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 866                                  int idx, u8 *dst, u8 *next_hop,
 867                                  struct mpath_info *pinfo)
 868 {
 869         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 870         struct mesh_path *mpath;
 871
 872         if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
 873                 return -ENOTSUPP;
 874
 875         rcu_read_lock();
 876         mpath = mesh_path_lookup_by_idx(idx, dev);
 877         if (!mpath) {
 878                 rcu_read_unlock();
 879                 return -ENOENT;
 880         }
 881         memcpy(dst, mpath->dst, ETH_ALEN);
 882         mpath_set_pinfo(mpath, next_hop, pinfo);
 883         rcu_read_unlock();
 884         return 0;
 885 }
 886 #endif
 887
 888 struct cfg80211_ops mac80211_config_ops = {
 889         .add_virtual_intf = ieee80211_add_iface,
 890         .del_virtual_intf = ieee80211_del_iface,
 891         .change_virtual_intf = ieee80211_change_iface,
 892         .add_key = ieee80211_add_key,
 893         .del_key = ieee80211_del_key,
 894         .get_key = ieee80211_get_key,
 895         .set_default_key = ieee80211_config_default_key,
 896         .add_beacon = ieee80211_add_beacon,
 897         .set_beacon = ieee80211_set_beacon,
 898         .del_beacon = ieee80211_del_beacon,
 899         .add_station = ieee80211_add_station,
 900         .del_station = ieee80211_del_station,
 901         .change_station = ieee80211_change_station,
 902         .get_station = ieee80211_get_station,
 903         .dump_station = ieee80211_dump_station,
 904 #ifdef CONFIG_MAC80211_MESH
 905         .add_mpath = ieee80211_add_mpath,
 906         .del_mpath = ieee80211_del_mpath,
 907         .change_mpath = ieee80211_change_mpath,
 908         .get_mpath = ieee80211_get_mpath,
 909         .dump_mpath = ieee80211_dump_mpath,
 910 #endif
 911 };