net/mac80211/wext.c

   1 /*
   2  * Copyright 2002-2005, Instant802 Networks, Inc.
   3  * Copyright 2005-2006, Devicescape Software, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/netdevice.h>
  13 #include <linux/types.h>
  14 #include <linux/slab.h>
  15 #include <linux/skbuff.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/if_arp.h>
  18 #include <linux/wireless.h>
  19 #include <net/iw_handler.h>
  20 #include <asm/uaccess.h>
  21
  22 #include <net/mac80211.h>
  23 #include "ieee80211_i.h"
  24 #include "led.h"
  25 #include "rate.h"
  26 #include "wpa.h"
  27 #include "aes_ccm.h"
  28
  29
  30 static int ieee80211_set_encryption(struct ieee80211_sub_if_data *sdata, u8 *sta_addr,
  31                                     int idx, int alg, int remove,
  32                                     int set_tx_key, const u8 *_key,
  33                                     size_t key_len)
  34 {
  35         struct ieee80211_local *local = sdata->local;
  36         struct sta_info *sta;
  37         struct ieee80211_key *key;
  38         int err;
  39
  40         if (alg == ALG_AES_CMAC) {
  41                 if (idx < NUM_DEFAULT_KEYS ||
  42                     idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
  43                         printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d "
  44                                "(BIP)\n", sdata->dev->name, idx);
  45                         return -EINVAL;
  46                 }
  47         } else if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
  48                 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
  49                        sdata->dev->name, idx);
  50                 return -EINVAL;
  51         }
  52
  53         if (remove) {
  54                 rcu_read_lock();
  55
  56                 err = 0;
  57
  58                 if (is_broadcast_ether_addr(sta_addr)) {
  59                         key = sdata->keys[idx];
  60                 } else {
  61                         sta = sta_info_get(local, sta_addr);
  62                         if (!sta) {
  63                                 err = -ENOENT;
  64                                 goto out_unlock;
  65                         }
  66                         key = sta->key;
  67                 }
  68
  69                 ieee80211_key_free(key);
  70         } else {
  71                 key = ieee80211_key_alloc(alg, idx, key_len, _key);
  72                 if (!key)
  73                         return -ENOMEM;
  74
  75                 sta = NULL;
  76                 err = 0;
  77
  78                 rcu_read_lock();
  79
  80                 if (!is_broadcast_ether_addr(sta_addr)) {
  81                         set_tx_key = 0;
  82                         /*
  83                          * According to the standard, the key index of a
  84                          * pairwise key must be zero. However, some AP are
  85                          * broken when it comes to WEP key indices, so we
  86                          * work around this.
  87                          */
  88                         if (idx != 0 && alg != ALG_WEP) {
  89                                 ieee80211_key_free(key);
  90                                 err = -EINVAL;
  91                                 goto out_unlock;
  92                         }
  93
  94                         sta = sta_info_get(local, sta_addr);
  95                         if (!sta) {
  96                                 ieee80211_key_free(key);
  97                                 err = -ENOENT;
  98                                 goto out_unlock;
  99                         }
 100                 }
 101
 102                 if (alg == ALG_WEP &&
 103                         key_len != LEN_WEP40 && key_len != LEN_WEP104) {
 104                         ieee80211_key_free(key);
 105                         err = -EINVAL;
 106                         goto out_unlock;
 107                 }
 108
 109                 ieee80211_key_link(key, sdata, sta);
 110
 111                 if (set_tx_key || (!sta && !sdata->default_key && key))
 112                         ieee80211_set_default_key(sdata, idx);
 113                 if (alg == ALG_AES_CMAC &&
 114                     (set_tx_key || (!sta && !sdata->default_mgmt_key && key)))
 115                         ieee80211_set_default_mgmt_key(sdata, idx);
 116         }
 117
 118  out_unlock:
 119         rcu_read_unlock();
 120
 121         return err;
 122 }
 123
 124 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
 125                                     struct iw_request_info *info,
 126                                     struct iw_point *data, char *extra)
 127 {
 128         struct ieee80211_sub_if_data *sdata;
 129
 130         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 131
 132         if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
 133                 return -EOPNOTSUPP;
 134
 135         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 136                 int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
 137                 if (ret)
 138                         return ret;
 139                 sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 140                 ieee80211_sta_req_auth(sdata);
 141                 return 0;
 142         }
 143
 144         return -EOPNOTSUPP;
 145 }
 146
 147 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
 148                                    struct iw_request_info *info,
 149                                    struct iw_freq *freq, char *extra)
 150 {
 151         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 152
 153         if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 154                 sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_CHANNEL_SEL;
 155         else if (sdata->vif.type == NL80211_IFTYPE_STATION)
 156                 sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 157
 158         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 159         if (freq->e == 0) {
 160                 if (freq->m < 0) {
 161                         if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 162                                 sdata->u.ibss.flags |=
 163                                         IEEE80211_IBSS_AUTO_CHANNEL_SEL;
 164                         else if (sdata->vif.type == NL80211_IFTYPE_STATION)
 165                                 sdata->u.mgd.flags |=
 166                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
 167                         return 0;
 168                 } else
 169                         return ieee80211_set_freq(sdata,
 170                                 ieee80211_channel_to_frequency(freq->m));
 171         } else {
 172                 int i, div = 1000000;
 173                 for (i = 0; i < freq->e; i++)
 174                         div /= 10;
 175                 if (div > 0)
 176                         return ieee80211_set_freq(sdata, freq->m / div);
 177                 else
 178                         return -EINVAL;
 179         }
 180 }
 181
 182
 183 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
 184                                    struct iw_request_info *info,
 185                                    struct iw_freq *freq, char *extra)
 186 {
 187         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 188
 189         freq->m = local->hw.conf.channel->center_freq;
 190         freq->e = 6;
 191
 192         return 0;
 193 }
 194
 195
 196 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 197                                     struct iw_request_info *info,
 198                                     struct iw_point *data, char *ssid)
 199 {
 200         struct ieee80211_sub_if_data *sdata;
 201         size_t len = data->length;
 202         int ret;
 203
 204         /* iwconfig uses nul termination in SSID.. */
 205         if (len > 0 && ssid[len - 1] == '\0')
 206                 len--;
 207
 208         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 209         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 210                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 211                         if (len > IEEE80211_MAX_SSID_LEN)
 212                                 return -EINVAL;
 213                         memcpy(sdata->u.mgd.ssid, ssid, len);
 214                         sdata->u.mgd.ssid_len = len;
 215                         return 0;
 216                 }
 217
 218                 if (data->flags)
 219                         sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 220                 else
 221                         sdata->u.mgd.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 222
 223                 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
 224                 if (ret)
 225                         return ret;
 226
 227                 ieee80211_sta_req_auth(sdata);
 228                 return 0;
 229         } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 230                 return ieee80211_ibss_set_ssid(sdata, ssid, len);
 231
 232         return -EOPNOTSUPP;
 233 }
 234
 235
 236 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 237                                     struct iw_request_info *info,
 238                                     struct iw_point *data, char *ssid)
 239 {
 240         size_t len;
 241
 242         struct ieee80211_sub_if_data *sdata;
 243         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 244         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 245                 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
 246                 if (res == 0) {
 247                         data->length = len;
 248                         data->flags = 1;
 249                 } else
 250                         data->flags = 0;
 251                 return res;
 252         } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 253                 int res = ieee80211_ibss_get_ssid(sdata, ssid, &len);
 254                 if (res == 0) {
 255                         data->length = len;
 256                         data->flags = 1;
 257                 } else
 258                         data->flags = 0;
 259                 return res;
 260         }
 261
 262         return -EOPNOTSUPP;
 263 }
 264
 265
 266 static int ieee80211_ioctl_siwap(struct net_device *dev,
 267                                  struct iw_request_info *info,
 268                                  struct sockaddr *ap_addr, char *extra)
 269 {
 270         struct ieee80211_sub_if_data *sdata;
 271
 272         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 273         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 274                 int ret;
 275                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 276                         memcpy(sdata->u.mgd.bssid, (u8 *) &ap_addr->sa_data,
 277                                ETH_ALEN);
 278                         return 0;
 279                 }
 280                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 281                         sdata->u.mgd.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 282                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 283                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 284                         sdata->u.mgd.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 285                 else
 286                         sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 287                 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
 288                 if (ret)
 289                         return ret;
 290                 ieee80211_sta_req_auth(sdata);
 291                 return 0;
 292         } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 293                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 294                         sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL |
 295                                                IEEE80211_IBSS_AUTO_CHANNEL_SEL;
 296                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 297                         sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL;
 298                 else
 299                         sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_BSSID_SEL;
 300
 301                 return ieee80211_ibss_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
 302         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 303                 /*
 304                  * If it is necessary to update the WDS peer address
 305                  * while the interface is running, then we need to do
 306                  * more work here, namely if it is running we need to
 307                  * add a new and remove the old STA entry, this is
 308                  * normally handled by _open() and _stop().
 309                  */
 310                 if (netif_running(dev))
 311                         return -EBUSY;
 312
 313                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 314                        ETH_ALEN);
 315
 316                 return 0;
 317         }
 318
 319         return -EOPNOTSUPP;
 320 }
 321
 322
 323 static int ieee80211_ioctl_giwap(struct net_device *dev,
 324                                  struct iw_request_info *info,
 325                                  struct sockaddr *ap_addr, char *extra)
 326 {
 327         struct ieee80211_sub_if_data *sdata;
 328
 329         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 330         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 331                 if (sdata->u.mgd.state == IEEE80211_STA_MLME_ASSOCIATED) {
 332                         ap_addr->sa_family = ARPHRD_ETHER;
 333                         memcpy(&ap_addr->sa_data, sdata->u.mgd.bssid, ETH_ALEN);
 334                 } else
 335                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
 336                 return 0;
 337         } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 338                 if (sdata->u.ibss.state == IEEE80211_IBSS_MLME_JOINED) {
 339                         ap_addr->sa_family = ARPHRD_ETHER;
 340                         memcpy(&ap_addr->sa_data, sdata->u.ibss.bssid, ETH_ALEN);
 341                 } else
 342                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
 343                 return 0;
 344         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 345                 ap_addr->sa_family = ARPHRD_ETHER;
 346                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 347                 return 0;
 348         }
 349
 350         return -EOPNOTSUPP;
 351 }
 352
 353
 354 static int ieee80211_ioctl_siwrate(struct net_device *dev,
 355                                   struct iw_request_info *info,
 356                                   struct iw_param *rate, char *extra)
 357 {
 358         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 359         int i, err = -EINVAL;
 360         u32 target_rate = rate->value / 100000;
 361         struct ieee80211_sub_if_data *sdata;
 362         struct ieee80211_supported_band *sband;
 363
 364         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 365
 366         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 367
 368         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
 369          * target_rate = X, rate->fixed = 1 means only rate X
 370          * target_rate = X, rate->fixed = 0 means all rates <= X */
 371         sdata->max_ratectrl_rateidx = -1;
 372         sdata->force_unicast_rateidx = -1;
 373         if (rate->value < 0)
 374                 return 0;
 375
 376         for (i=0; i< sband->n_bitrates; i++) {
 377                 struct ieee80211_rate *brate = &sband->bitrates[i];
 378                 int this_rate = brate->bitrate;
 379
 380                 if (target_rate == this_rate) {
 381                         sdata->max_ratectrl_rateidx = i;
 382                         if (rate->fixed)
 383                                 sdata->force_unicast_rateidx = i;
 384                         err = 0;
 385                         break;
 386                 }
 387         }
 388         return err;
 389 }
 390
 391 static int ieee80211_ioctl_giwrate(struct net_device *dev,
 392                                   struct iw_request_info *info,
 393                                   struct iw_param *rate, char *extra)
 394 {
 395         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 396         struct sta_info *sta;
 397         struct ieee80211_sub_if_data *sdata;
 398         struct ieee80211_supported_band *sband;
 399
 400         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 401
 402         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 403                 return -EOPNOTSUPP;
 404
 405         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 406
 407         rcu_read_lock();
 408
 409         sta = sta_info_get(local, sdata->u.mgd.bssid);
 410
 411         if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
 412                 rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
 413         else
 414                 rate->value = 0;
 415
 416         rcu_read_unlock();
 417
 418         if (!sta)
 419                 return -ENODEV;
 420
 421         rate->value *= 100000;
 422
 423         return 0;
 424 }
 425
 426 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
 427                                       struct iw_request_info *info,
 428                                       union iwreq_data *data, char *extra)
 429 {
 430         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 431         struct ieee80211_channel* chan = local->hw.conf.channel;
 432         u32 reconf_flags = 0;
 433         int new_power_level;
 434
 435         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 436                 return -EINVAL;
 437         if (data->txpower.flags & IW_TXPOW_RANGE)
 438                 return -EINVAL;
 439         if (!chan)
 440                 return -EINVAL;
 441
 442         if (data->txpower.fixed)
 443                 new_power_level = min(data->txpower.value, chan->max_power);
 444         else /* Automatic power level setting */
 445                 new_power_level = chan->max_power;
 446
 447         local->user_power_level = new_power_level;
 448         if (local->hw.conf.power_level != new_power_level)
 449                 reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
 450
 451         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 452                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 453                 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
 454                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 455         }
 456
 457         if (reconf_flags)
 458                 ieee80211_hw_config(local, reconf_flags);
 459
 460         return 0;
 461 }
 462
 463 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 464                                    struct iw_request_info *info,
 465                                    union iwreq_data *data, char *extra)
 466 {
 467         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 468
 469         data->txpower.fixed = 1;
 470         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 471         data->txpower.value = local->hw.conf.power_level;
 472         data->txpower.flags = IW_TXPOW_DBM;
 473
 474         return 0;
 475 }
 476
 477 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 478                                   struct iw_request_info *info,
 479                                   struct iw_param *rts, char *extra)
 480 {
 481         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 482
 483         if (rts->disabled)
 484                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 485         else if (!rts->fixed)
 486                 /* if the rts value is not fixed, then take default */
 487                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 488         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 489                 return -EINVAL;
 490         else
 491                 local->rts_threshold = rts->value;
 492
 493         /* If the wlan card performs RTS/CTS in hardware/firmware,
 494          * configure it here */
 495
 496         if (local->ops->set_rts_threshold)
 497                 local->ops->set_rts_threshold(local_to_hw(local),
 498                                              local->rts_threshold);
 499
 500         return 0;
 501 }
 502
 503 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 504                                   struct iw_request_info *info,
 505                                   struct iw_param *rts, char *extra)
 506 {
 507         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 508
 509         rts->value = local->rts_threshold;
 510         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 511         rts->fixed = 1;
 512
 513         return 0;
 514 }
 515
 516
 517 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 518                                    struct iw_request_info *info,
 519                                    struct iw_param *frag, char *extra)
 520 {
 521         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 522
 523         if (frag->disabled)
 524                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 525         else if (!frag->fixed)
 526                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 527         else if (frag->value < 256 ||
 528                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 529                 return -EINVAL;
 530         else {
 531                 /* Fragment length must be even, so strip LSB. */
 532                 local->fragmentation_threshold = frag->value & ~0x1;
 533         }
 534
 535         return 0;
 536 }
 537
 538 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 539                                    struct iw_request_info *info,
 540                                    struct iw_param *frag, char *extra)
 541 {
 542         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 543
 544         frag->value = local->fragmentation_threshold;
 545         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
 546         frag->fixed = 1;
 547
 548         return 0;
 549 }
 550
 551
 552 static int ieee80211_ioctl_siwretry(struct net_device *dev,
 553                                     struct iw_request_info *info,
 554                                     struct iw_param *retry, char *extra)
 555 {
 556         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 557
 558         if (retry->disabled ||
 559             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 560                 return -EINVAL;
 561
 562         if (retry->flags & IW_RETRY_MAX) {
 563                 local->hw.conf.long_frame_max_tx_count = retry->value;
 564         } else if (retry->flags & IW_RETRY_MIN) {
 565                 local->hw.conf.short_frame_max_tx_count = retry->value;
 566         } else {
 567                 local->hw.conf.long_frame_max_tx_count = retry->value;
 568                 local->hw.conf.short_frame_max_tx_count = retry->value;
 569         }
 570
 571         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
 572
 573         return 0;
 574 }
 575
 576
 577 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 578                                     struct iw_request_info *info,
 579                                     struct iw_param *retry, char *extra)
 580 {
 581         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 582
 583         retry->disabled = 0;
 584         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 585                 /* first return min value, iwconfig will ask max value
 586                  * later if needed */
 587                 retry->flags |= IW_RETRY_LIMIT;
 588                 retry->value = local->hw.conf.short_frame_max_tx_count;
 589                 if (local->hw.conf.long_frame_max_tx_count !=
 590                     local->hw.conf.short_frame_max_tx_count)
 591                         retry->flags |= IW_RETRY_MIN;
 592                 return 0;
 593         }
 594         if (retry->flags & IW_RETRY_MAX) {
 595                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 596                 retry->value = local->hw.conf.long_frame_max_tx_count;
 597         }
 598
 599         return 0;
 600 }
 601
 602 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
 603                                    struct iw_request_info *info,
 604                                    struct iw_point *data, char *extra)
 605 {
 606         struct ieee80211_sub_if_data *sdata;
 607         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 608
 609         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 610         if (!(sdata->vif.type == NL80211_IFTYPE_STATION))
 611                 return -EINVAL;
 612
 613         switch (mlme->cmd) {
 614         case IW_MLME_DEAUTH:
 615                 /* TODO: mlme->addr.sa_data */
 616                 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
 617         case IW_MLME_DISASSOC:
 618                 /* TODO: mlme->addr.sa_data */
 619                 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
 620         default:
 621                 return -EOPNOTSUPP;
 622         }
 623 }
 624
 625
 626 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 627                                      struct iw_request_info *info,
 628                                      struct iw_point *erq, char *keybuf)
 629 {
 630         struct ieee80211_sub_if_data *sdata;
 631         int idx, i, alg = ALG_WEP;
 632         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 633         int remove = 0, ret;
 634
 635         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 636
 637         idx = erq->flags & IW_ENCODE_INDEX;
 638         if (idx == 0) {
 639                 if (sdata->default_key)
 640                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 641                                 if (sdata->default_key == sdata->keys[i]) {
 642                                         idx = i;
 643                                         break;
 644                                 }
 645                         }
 646         } else if (idx < 1 || idx > 4)
 647                 return -EINVAL;
 648         else
 649                 idx--;
 650
 651         if (erq->flags & IW_ENCODE_DISABLED)
 652                 remove = 1;
 653         else if (erq->length == 0) {
 654                 /* No key data - just set the default TX key index */
 655                 ieee80211_set_default_key(sdata, idx);
 656                 return 0;
 657         }
 658
 659         ret = ieee80211_set_encryption(
 660                 sdata, bcaddr,
 661                 idx, alg, remove,
 662                 !sdata->default_key,
 663                 keybuf, erq->length);
 664
 665         if (!ret) {
 666                 if (remove)
 667                         sdata->u.mgd.flags &= ~IEEE80211_STA_TKIP_WEP_USED;
 668                 else
 669                         sdata->u.mgd.flags |= IEEE80211_STA_TKIP_WEP_USED;
 670         }
 671
 672         return ret;
 673 }
 674
 675
 676 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 677                                      struct iw_request_info *info,
 678                                      struct iw_point *erq, char *key)
 679 {
 680         struct ieee80211_sub_if_data *sdata;
 681         int idx, i;
 682
 683         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 684
 685         idx = erq->flags & IW_ENCODE_INDEX;
 686         if (idx < 1 || idx > 4) {
 687                 idx = -1;
 688                 if (!sdata->default_key)
 689                         idx = 0;
 690                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 691                         if (sdata->default_key == sdata->keys[i]) {
 692                                 idx = i;
 693                                 break;
 694                         }
 695                 }
 696                 if (idx < 0)
 697                         return -EINVAL;
 698         } else
 699                 idx--;
 700
 701         erq->flags = idx + 1;
 702
 703         if (!sdata->keys[idx]) {
 704                 erq->length = 0;
 705                 erq->flags |= IW_ENCODE_DISABLED;
 706                 return 0;
 707         }
 708
 709         memcpy(key, sdata->keys[idx]->conf.key,
 710                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 711         erq->length = sdata->keys[idx]->conf.keylen;
 712         erq->flags |= IW_ENCODE_ENABLED;
 713
 714         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 715                 switch (sdata->u.mgd.auth_alg) {
 716                 case WLAN_AUTH_OPEN:
 717                 case WLAN_AUTH_LEAP:
 718                         erq->flags |= IW_ENCODE_OPEN;
 719                         break;
 720                 case WLAN_AUTH_SHARED_KEY:
 721                         erq->flags |= IW_ENCODE_RESTRICTED;
 722                         break;
 723                 }
 724         }
 725
 726         return 0;
 727 }
 728
 729 static int ieee80211_ioctl_siwpower(struct net_device *dev,
 730                                     struct iw_request_info *info,
 731                                     struct iw_param *wrq,
 732                                     char *extra)
 733 {
 734         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 735         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 736         struct ieee80211_conf *conf = &local->hw.conf;
 737         int ret = 0, timeout = 0;
 738         bool ps;
 739
 740         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
 741                 return -EOPNOTSUPP;
 742
 743         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 744                 return -EINVAL;
 745
 746         if (wrq->disabled) {
 747                 ps = false;
 748                 timeout = 0;
 749                 goto set;
 750         }
 751
 752         switch (wrq->flags & IW_POWER_MODE) {
 753         case IW_POWER_ON:       /* If not specified */
 754         case IW_POWER_MODE:     /* If set all mask */
 755         case IW_POWER_ALL_R:    /* If explicitely state all */
 756                 ps = true;
 757                 break;
 758         default:                /* Otherwise we ignore */
 759                 return -EINVAL;
 760         }
 761
 762         if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
 763                 return -EINVAL;
 764
 765         if (wrq->flags & IW_POWER_TIMEOUT)
 766                 timeout = wrq->value / 1000;
 767
 768  set:
 769         if (ps == local->powersave && timeout == conf->dynamic_ps_timeout)
 770                 return ret;
 771
 772         local->powersave = ps;
 773         conf->dynamic_ps_timeout = timeout;
 774
 775         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
 776                 ret = ieee80211_hw_config(local,
 777                                           IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT);
 778
 779         if (!(sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED))
 780                 return ret;
 781
 782         if (conf->dynamic_ps_timeout > 0 &&
 783             !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
 784                 mod_timer(&local->dynamic_ps_timer, jiffies +
 785                           msecs_to_jiffies(conf->dynamic_ps_timeout));
 786         } else {
 787                 if (local->powersave) {
 788                         if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
 789                                 ieee80211_send_nullfunc(local, sdata, 1);
 790                         conf->flags |= IEEE80211_CONF_PS;
 791                         ret = ieee80211_hw_config(local,
 792                                         IEEE80211_CONF_CHANGE_PS);
 793                 } else {
 794                         conf->flags &= ~IEEE80211_CONF_PS;
 795                         ret = ieee80211_hw_config(local,
 796                                         IEEE80211_CONF_CHANGE_PS);
 797                         if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
 798                                 ieee80211_send_nullfunc(local, sdata, 0);
 799                         del_timer_sync(&local->dynamic_ps_timer);
 800                         cancel_work_sync(&local->dynamic_ps_enable_work);
 801                 }
 802         }
 803
 804         return ret;
 805 }
 806
 807 static int ieee80211_ioctl_giwpower(struct net_device *dev,
 808                                     struct iw_request_info *info,
 809                                     union iwreq_data *wrqu,
 810                                     char *extra)
 811 {
 812         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 813
 814         wrqu->power.disabled = !local->powersave;
 815
 816         return 0;
 817 }
 818
 819 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 820                                    struct iw_request_info *info,
 821                                    struct iw_param *data, char *extra)
 822 {
 823         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 824         int ret = 0;
 825
 826         switch (data->flags & IW_AUTH_INDEX) {
 827         case IW_AUTH_WPA_VERSION:
 828         case IW_AUTH_CIPHER_GROUP:
 829         case IW_AUTH_WPA_ENABLED:
 830         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 831         case IW_AUTH_KEY_MGMT:
 832         case IW_AUTH_CIPHER_GROUP_MGMT:
 833                 break;
 834         case IW_AUTH_CIPHER_PAIRWISE:
 835                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 836                         if (data->value & (IW_AUTH_CIPHER_WEP40 |
 837                             IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_TKIP))
 838                                 sdata->u.mgd.flags |=
 839                                         IEEE80211_STA_TKIP_WEP_USED;
 840                         else
 841                                 sdata->u.mgd.flags &=
 842                                         ~IEEE80211_STA_TKIP_WEP_USED;
 843                 }
 844                 break;
 845         case IW_AUTH_DROP_UNENCRYPTED:
 846                 sdata->drop_unencrypted = !!data->value;
 847                 break;
 848         case IW_AUTH_PRIVACY_INVOKED:
 849                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
 850                         ret = -EINVAL;
 851                 else {
 852                         sdata->u.mgd.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 853                         /*
 854                          * Privacy invoked by wpa_supplicant, store the
 855                          * value and allow associating to a protected
 856                          * network without having a key up front.
 857                          */
 858                         if (data->value)
 859                                 sdata->u.mgd.flags |=
 860                                         IEEE80211_STA_PRIVACY_INVOKED;
 861                 }
 862                 break;
 863         case IW_AUTH_80211_AUTH_ALG:
 864                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
 865                         sdata->u.mgd.auth_algs = data->value;
 866                 else
 867                         ret = -EOPNOTSUPP;
 868                 break;
 869         case IW_AUTH_MFP:
 870                 if (!(sdata->local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) {
 871                         ret = -EOPNOTSUPP;
 872                         break;
 873                 }
 874                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 875                         switch (data->value) {
 876                         case IW_AUTH_MFP_DISABLED:
 877                                 sdata->u.mgd.mfp = IEEE80211_MFP_DISABLED;
 878                                 break;
 879                         case IW_AUTH_MFP_OPTIONAL:
 880                                 sdata->u.mgd.mfp = IEEE80211_MFP_OPTIONAL;
 881                                 break;
 882                         case IW_AUTH_MFP_REQUIRED:
 883                                 sdata->u.mgd.mfp = IEEE80211_MFP_REQUIRED;
 884                                 break;
 885                         default:
 886                                 ret = -EINVAL;
 887                         }
 888                 } else
 889                         ret = -EOPNOTSUPP;
 890                 break;
 891         default:
 892                 ret = -EOPNOTSUPP;
 893                 break;
 894         }
 895         return ret;
 896 }
 897
 898 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 899 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 900 {
 901         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 902         struct iw_statistics *wstats = &local->wstats;
 903         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 904         struct sta_info *sta = NULL;
 905
 906         rcu_read_lock();
 907
 908         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 909                 sta = sta_info_get(local, sdata->u.mgd.bssid);
 910
 911         if (!sta) {
 912                 wstats->discard.fragment = 0;
 913                 wstats->discard.misc = 0;
 914                 wstats->qual.qual = 0;
 915                 wstats->qual.level = 0;
 916                 wstats->qual.noise = 0;
 917                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
 918         } else {
 919                 wstats->qual.updated = 0;
 920                 /*
 921                  * mirror what cfg80211 does for iwrange/scan results,
 922                  * otherwise userspace gets confused.
 923                  */
 924                 if (local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC |
 925                                        IEEE80211_HW_SIGNAL_DBM)) {
 926                         wstats->qual.updated |= IW_QUAL_LEVEL_UPDATED;
 927                         wstats->qual.updated |= IW_QUAL_QUAL_UPDATED;
 928                 } else {
 929                         wstats->qual.updated |= IW_QUAL_LEVEL_INVALID;
 930                         wstats->qual.updated |= IW_QUAL_QUAL_INVALID;
 931                 }
 932
 933                 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
 934                         wstats->qual.level = sta->last_signal;
 935                         wstats->qual.qual = sta->last_signal;
 936                 } else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
 937                         int sig = sta->last_signal;
 938
 939                         wstats->qual.updated |= IW_QUAL_DBM;
 940                         wstats->qual.level = sig;
 941                         if (sig < -110)
 942                                 sig = -110;
 943                         else if (sig > -40)
 944                                 sig = -40;
 945                         wstats->qual.qual = sig + 110;
 946                 }
 947
 948                 if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
 949                         /*
 950                          * This assumes that if driver reports noise, it also
 951                          * reports signal in dBm.
 952                          */
 953                         wstats->qual.noise = sta->last_noise;
 954                         wstats->qual.updated |= IW_QUAL_NOISE_UPDATED;
 955                 } else {
 956                         wstats->qual.updated |= IW_QUAL_NOISE_INVALID;
 957                 }
 958         }
 959
 960         rcu_read_unlock();
 961
 962         return wstats;
 963 }
 964
 965 static int ieee80211_ioctl_giwauth(struct net_device *dev,
 966                                    struct iw_request_info *info,
 967                                    struct iw_param *data, char *extra)
 968 {
 969         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 970         int ret = 0;
 971
 972         switch (data->flags & IW_AUTH_INDEX) {
 973         case IW_AUTH_80211_AUTH_ALG:
 974                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
 975                         data->value = sdata->u.mgd.auth_algs;
 976                 else
 977                         ret = -EOPNOTSUPP;
 978                 break;
 979         default:
 980                 ret = -EOPNOTSUPP;
 981                 break;
 982         }
 983         return ret;
 984 }
 985
 986
 987 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
 988                                         struct iw_request_info *info,
 989                                         struct iw_point *erq, char *extra)
 990 {
 991         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 992         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 993         int uninitialized_var(alg), idx, i, remove = 0;
 994
 995         switch (ext->alg) {
 996         case IW_ENCODE_ALG_NONE:
 997                 remove = 1;
 998                 break;
 999         case IW_ENCODE_ALG_WEP:
1000                 alg = ALG_WEP;
1001                 break;
1002         case IW_ENCODE_ALG_TKIP:
1003                 alg = ALG_TKIP;
1004                 break;
1005         case IW_ENCODE_ALG_CCMP:
1006                 alg = ALG_CCMP;
1007                 break;
1008         case IW_ENCODE_ALG_AES_CMAC:
1009                 alg = ALG_AES_CMAC;
1010                 break;
1011         default:
1012                 return -EOPNOTSUPP;
1013         }
1014
1015         if (erq->flags & IW_ENCODE_DISABLED)
1016                 remove = 1;
1017
1018         idx = erq->flags & IW_ENCODE_INDEX;
1019         if (alg == ALG_AES_CMAC) {
1020                 if (idx < NUM_DEFAULT_KEYS + 1 ||
1021                     idx > NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
1022                         idx = -1;
1023                         if (!sdata->default_mgmt_key)
1024                                 idx = 0;
1025                         else for (i = NUM_DEFAULT_KEYS;
1026                                   i < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS;
1027                                   i++) {
1028                                 if (sdata->default_mgmt_key == sdata->keys[i])
1029                                 {
1030                                         idx = i;
1031                                         break;
1032                                 }
1033                         }
1034                         if (idx < 0)
1035                                 return -EINVAL;
1036                 } else
1037                         idx--;
1038         } else {
1039                 if (idx < 1 || idx > 4) {
1040                         idx = -1;
1041                         if (!sdata->default_key)
1042                                 idx = 0;
1043                         else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1044                                 if (sdata->default_key == sdata->keys[i]) {
1045                                         idx = i;
1046                                         break;
1047                                 }
1048                         }
1049                         if (idx < 0)
1050                                 return -EINVAL;
1051                 } else
1052                         idx--;
1053         }
1054
1055         return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1056                                         remove,
1057                                         ext->ext_flags &
1058                                         IW_ENCODE_EXT_SET_TX_KEY,
1059                                         ext->key, ext->key_len);
1060 }
1061
1062
1063 /* Structures to export the Wireless Handlers */
1064
1065 static const iw_handler ieee80211_handler[] =
1066 {
1067         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1068         (iw_handler) cfg80211_wext_giwname,             /* SIOCGIWNAME */
1069         (iw_handler) NULL,                              /* SIOCSIWNWID */
1070         (iw_handler) NULL,                              /* SIOCGIWNWID */
1071         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1072         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1073         (iw_handler) cfg80211_wext_siwmode,             /* SIOCSIWMODE */
1074         (iw_handler) cfg80211_wext_giwmode,             /* SIOCGIWMODE */
1075         (iw_handler) NULL,                              /* SIOCSIWSENS */
1076         (iw_handler) NULL,                              /* SIOCGIWSENS */
1077         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1078         (iw_handler) cfg80211_wext_giwrange,            /* SIOCGIWRANGE */
1079         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1080         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1081         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1082         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1083         (iw_handler) NULL,                              /* SIOCSIWSPY */
1084         (iw_handler) NULL,                              /* SIOCGIWSPY */
1085         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1086         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1087         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1088         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1089         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1090         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1091         (iw_handler) cfg80211_wext_siwscan,             /* SIOCSIWSCAN */
1092         (iw_handler) cfg80211_wext_giwscan,             /* SIOCGIWSCAN */
1093         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1094         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1095         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1096         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1097         (iw_handler) NULL,                              /* -- hole -- */
1098         (iw_handler) NULL,                              /* -- hole -- */
1099         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1100         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1101         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1102         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1103         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1104         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1105         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1106         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1107         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1108         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1109         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1110         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1111         (iw_handler) ieee80211_ioctl_siwpower,          /* SIOCSIWPOWER */
1112         (iw_handler) ieee80211_ioctl_giwpower,          /* SIOCGIWPOWER */
1113         (iw_handler) NULL,                              /* -- hole -- */
1114         (iw_handler) NULL,                              /* -- hole -- */
1115         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1116         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1117         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1118         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1119         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1120         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1121         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1122         (iw_handler) NULL,                              /* -- hole -- */
1123 };
1124
1125 const struct iw_handler_def ieee80211_iw_handler_def =
1126 {
1127         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1128         .standard       = (iw_handler *) ieee80211_handler,
1129         .get_wireless_stats = ieee80211_get_wireless_stats,
1130 };