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 (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
  41                 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
  42                        sdata->dev->name, idx);
  43                 return -EINVAL;
  44         }
  45
  46         if (remove) {
  47                 rcu_read_lock();
  48
  49                 err = 0;
  50
  51                 if (is_broadcast_ether_addr(sta_addr)) {
  52                         key = sdata->keys[idx];
  53                 } else {
  54                         sta = sta_info_get(local, sta_addr);
  55                         if (!sta) {
  56                                 err = -ENOENT;
  57                                 goto out_unlock;
  58                         }
  59                         key = sta->key;
  60                 }
  61
  62                 ieee80211_key_free(key);
  63         } else {
  64                 key = ieee80211_key_alloc(alg, idx, key_len, _key);
  65                 if (!key)
  66                         return -ENOMEM;
  67
  68                 sta = NULL;
  69                 err = 0;
  70
  71                 rcu_read_lock();
  72
  73                 if (!is_broadcast_ether_addr(sta_addr)) {
  74                         set_tx_key = 0;
  75                         /*
  76                          * According to the standard, the key index of a
  77                          * pairwise key must be zero. However, some AP are
  78                          * broken when it comes to WEP key indices, so we
  79                          * work around this.
  80                          */
  81                         if (idx != 0 && alg != ALG_WEP) {
  82                                 ieee80211_key_free(key);
  83                                 err = -EINVAL;
  84                                 goto out_unlock;
  85                         }
  86
  87                         sta = sta_info_get(local, sta_addr);
  88                         if (!sta) {
  89                                 ieee80211_key_free(key);
  90                                 err = -ENOENT;
  91                                 goto out_unlock;
  92                         }
  93                 }
  94
  95                 if (alg == ALG_WEP &&
  96                         key_len != LEN_WEP40 && key_len != LEN_WEP104) {
  97                         ieee80211_key_free(key);
  98                         err = -EINVAL;
  99                         goto out_unlock;
 100                 }
 101
 102                 ieee80211_key_link(key, sdata, sta);
 103
 104                 if (set_tx_key || (!sta && !sdata->default_key && key))
 105                         ieee80211_set_default_key(sdata, idx);
 106         }
 107
 108  out_unlock:
 109         rcu_read_unlock();
 110
 111         return err;
 112 }
 113
 114 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
 115                                     struct iw_request_info *info,
 116                                     struct iw_point *data, char *extra)
 117 {
 118         struct ieee80211_sub_if_data *sdata;
 119
 120         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 121
 122         if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
 123                 return -EOPNOTSUPP;
 124
 125         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 126             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 127                 int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
 128                 if (ret)
 129                         return ret;
 130                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 131                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
 132                 return 0;
 133         }
 134
 135         return -EOPNOTSUPP;
 136 }
 137
 138 static int ieee80211_ioctl_giwrange(struct net_device *dev,
 139                                  struct iw_request_info *info,
 140                                  struct iw_point *data, char *extra)
 141 {
 142         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 143         struct iw_range *range = (struct iw_range *) extra;
 144         enum ieee80211_band band;
 145         int c = 0;
 146
 147         data->length = sizeof(struct iw_range);
 148         memset(range, 0, sizeof(struct iw_range));
 149
 150         range->we_version_compiled = WIRELESS_EXT;
 151         range->we_version_source = 21;
 152         range->retry_capa = IW_RETRY_LIMIT;
 153         range->retry_flags = IW_RETRY_LIMIT;
 154         range->min_retry = 0;
 155         range->max_retry = 255;
 156         range->min_rts = 0;
 157         range->max_rts = 2347;
 158         range->min_frag = 256;
 159         range->max_frag = 2346;
 160
 161         range->encoding_size[0] = 5;
 162         range->encoding_size[1] = 13;
 163         range->num_encoding_sizes = 2;
 164         range->max_encoding_tokens = NUM_DEFAULT_KEYS;
 165
 166         if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC ||
 167             local->hw.flags & IEEE80211_HW_SIGNAL_DB)
 168                 range->max_qual.level = local->hw.max_signal;
 169         else if  (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
 170                 range->max_qual.level = -110;
 171         else
 172                 range->max_qual.level = 0;
 173
 174         if (local->hw.flags & IEEE80211_HW_NOISE_DBM)
 175                 range->max_qual.noise = -110;
 176         else
 177                 range->max_qual.noise = 0;
 178
 179         range->max_qual.qual = 100;
 180         range->max_qual.updated = local->wstats_flags;
 181
 182         range->avg_qual.qual = 50;
 183         /* not always true but better than nothing */
 184         range->avg_qual.level = range->max_qual.level / 2;
 185         range->avg_qual.noise = range->max_qual.noise / 2;
 186         range->avg_qual.updated = local->wstats_flags;
 187
 188         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
 189                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 190
 191
 192         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 193                 int i;
 194                 struct ieee80211_supported_band *sband;
 195
 196                 sband = local->hw.wiphy->bands[band];
 197
 198                 if (!sband)
 199                         continue;
 200
 201                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 202                         struct ieee80211_channel *chan = &sband->channels[i];
 203
 204                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 205                                 range->freq[c].i =
 206                                         ieee80211_frequency_to_channel(
 207                                                 chan->center_freq);
 208                                 range->freq[c].m = chan->center_freq;
 209                                 range->freq[c].e = 6;
 210                                 c++;
 211                         }
 212                 }
 213         }
 214         range->num_channels = c;
 215         range->num_frequency = c;
 216
 217         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 218         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 219         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 220
 221         range->scan_capa |= IW_SCAN_CAPA_ESSID;
 222
 223         return 0;
 224 }
 225
 226
 227 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
 228                                    struct iw_request_info *info,
 229                                    struct iw_freq *freq, char *extra)
 230 {
 231         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 232
 233         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 234                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 235
 236         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 237         if (freq->e == 0) {
 238                 if (freq->m < 0) {
 239                         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 240                                 sdata->u.sta.flags |=
 241                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
 242                         return 0;
 243                 } else
 244                         return ieee80211_set_freq(sdata,
 245                                 ieee80211_channel_to_frequency(freq->m));
 246         } else {
 247                 int i, div = 1000000;
 248                 for (i = 0; i < freq->e; i++)
 249                         div /= 10;
 250                 if (div > 0)
 251                         return ieee80211_set_freq(sdata, freq->m / div);
 252                 else
 253                         return -EINVAL;
 254         }
 255 }
 256
 257
 258 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
 259                                    struct iw_request_info *info,
 260                                    struct iw_freq *freq, char *extra)
 261 {
 262         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 263
 264         freq->m = local->hw.conf.channel->center_freq;
 265         freq->e = 6;
 266
 267         return 0;
 268 }
 269
 270
 271 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 272                                     struct iw_request_info *info,
 273                                     struct iw_point *data, char *ssid)
 274 {
 275         struct ieee80211_sub_if_data *sdata;
 276         size_t len = data->length;
 277
 278         /* iwconfig uses nul termination in SSID.. */
 279         if (len > 0 && ssid[len - 1] == '\0')
 280                 len--;
 281
 282         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 283         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 284             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 285                 int ret;
 286                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 287                         if (len > IEEE80211_MAX_SSID_LEN)
 288                                 return -EINVAL;
 289                         memcpy(sdata->u.sta.ssid, ssid, len);
 290                         sdata->u.sta.ssid_len = len;
 291                         return 0;
 292                 }
 293                 if (data->flags)
 294                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 295                 else
 296                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 297                 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
 298                 if (ret)
 299                         return ret;
 300                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
 301                 return 0;
 302         }
 303
 304         return -EOPNOTSUPP;
 305 }
 306
 307
 308 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 309                                     struct iw_request_info *info,
 310                                     struct iw_point *data, char *ssid)
 311 {
 312         size_t len;
 313
 314         struct ieee80211_sub_if_data *sdata;
 315         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 316         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 317             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 318                 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
 319                 if (res == 0) {
 320                         data->length = len;
 321                         data->flags = 1;
 322                 } else
 323                         data->flags = 0;
 324                 return res;
 325         }
 326
 327         return -EOPNOTSUPP;
 328 }
 329
 330
 331 static int ieee80211_ioctl_siwap(struct net_device *dev,
 332                                  struct iw_request_info *info,
 333                                  struct sockaddr *ap_addr, char *extra)
 334 {
 335         struct ieee80211_sub_if_data *sdata;
 336
 337         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 338         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 339             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 340                 int ret;
 341                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 342                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
 343                                ETH_ALEN);
 344                         return 0;
 345                 }
 346                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 347                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 348                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 349                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 350                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 351                 else
 352                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 353                 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
 354                 if (ret)
 355                         return ret;
 356                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
 357                 return 0;
 358         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 359                 /*
 360                  * If it is necessary to update the WDS peer address
 361                  * while the interface is running, then we need to do
 362                  * more work here, namely if it is running we need to
 363                  * add a new and remove the old STA entry, this is
 364                  * normally handled by _open() and _stop().
 365                  */
 366                 if (netif_running(dev))
 367                         return -EBUSY;
 368
 369                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 370                        ETH_ALEN);
 371
 372                 return 0;
 373         }
 374
 375         return -EOPNOTSUPP;
 376 }
 377
 378
 379 static int ieee80211_ioctl_giwap(struct net_device *dev,
 380                                  struct iw_request_info *info,
 381                                  struct sockaddr *ap_addr, char *extra)
 382 {
 383         struct ieee80211_sub_if_data *sdata;
 384
 385         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 386         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 387             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 388                 if (sdata->u.sta.state == IEEE80211_STA_MLME_ASSOCIATED ||
 389                     sdata->u.sta.state == IEEE80211_STA_MLME_IBSS_JOINED) {
 390                         ap_addr->sa_family = ARPHRD_ETHER;
 391                         memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
 392                         return 0;
 393                 } else {
 394                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
 395                         return 0;
 396                 }
 397         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 398                 ap_addr->sa_family = ARPHRD_ETHER;
 399                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 400                 return 0;
 401         }
 402
 403         return -EOPNOTSUPP;
 404 }
 405
 406
 407 static int ieee80211_ioctl_siwscan(struct net_device *dev,
 408                                    struct iw_request_info *info,
 409                                    union iwreq_data *wrqu, char *extra)
 410 {
 411         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 412         struct iw_scan_req *req = NULL;
 413         u8 *ssid = NULL;
 414         size_t ssid_len = 0;
 415
 416         if (!netif_running(dev))
 417                 return -ENETDOWN;
 418
 419         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
 420             sdata->vif.type != NL80211_IFTYPE_ADHOC &&
 421             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
 422                 return -EOPNOTSUPP;
 423
 424         /* if SSID was specified explicitly then use that */
 425         if (wrqu->data.length == sizeof(struct iw_scan_req) &&
 426             wrqu->data.flags & IW_SCAN_THIS_ESSID) {
 427                 req = (struct iw_scan_req *)extra;
 428                 ssid = req->essid;
 429                 ssid_len = req->essid_len;
 430         }
 431
 432         return ieee80211_request_scan(sdata, ssid, ssid_len);
 433 }
 434
 435
 436 static int ieee80211_ioctl_giwscan(struct net_device *dev,
 437                                    struct iw_request_info *info,
 438                                    struct iw_point *data, char *extra)
 439 {
 440         int res;
 441         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 442         struct ieee80211_sub_if_data *sdata;
 443
 444         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 445
 446         if (local->sw_scanning || local->hw_scanning)
 447                 return -EAGAIN;
 448
 449         res = ieee80211_scan_results(local, info, extra, data->length);
 450         if (res >= 0) {
 451                 data->length = res;
 452                 return 0;
 453         }
 454         data->length = 0;
 455         return res;
 456 }
 457
 458
 459 static int ieee80211_ioctl_siwrate(struct net_device *dev,
 460                                   struct iw_request_info *info,
 461                                   struct iw_param *rate, char *extra)
 462 {
 463         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 464         int i, err = -EINVAL;
 465         u32 target_rate = rate->value / 100000;
 466         struct ieee80211_sub_if_data *sdata;
 467         struct ieee80211_supported_band *sband;
 468
 469         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 470
 471         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 472
 473         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
 474          * target_rate = X, rate->fixed = 1 means only rate X
 475          * target_rate = X, rate->fixed = 0 means all rates <= X */
 476         sdata->max_ratectrl_rateidx = -1;
 477         sdata->force_unicast_rateidx = -1;
 478         if (rate->value < 0)
 479                 return 0;
 480
 481         for (i=0; i< sband->n_bitrates; i++) {
 482                 struct ieee80211_rate *brate = &sband->bitrates[i];
 483                 int this_rate = brate->bitrate;
 484
 485                 if (target_rate == this_rate) {
 486                         sdata->max_ratectrl_rateidx = i;
 487                         if (rate->fixed)
 488                                 sdata->force_unicast_rateidx = i;
 489                         err = 0;
 490                         break;
 491                 }
 492         }
 493         return err;
 494 }
 495
 496 static int ieee80211_ioctl_giwrate(struct net_device *dev,
 497                                   struct iw_request_info *info,
 498                                   struct iw_param *rate, char *extra)
 499 {
 500         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 501         struct sta_info *sta;
 502         struct ieee80211_sub_if_data *sdata;
 503         struct ieee80211_supported_band *sband;
 504
 505         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 506
 507         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 508                 return -EOPNOTSUPP;
 509
 510         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 511
 512         rcu_read_lock();
 513
 514         sta = sta_info_get(local, sdata->u.sta.bssid);
 515
 516         if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
 517                 rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
 518         else
 519                 rate->value = 0;
 520
 521         rcu_read_unlock();
 522
 523         if (!sta)
 524                 return -ENODEV;
 525
 526         rate->value *= 100000;
 527
 528         return 0;
 529 }
 530
 531 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
 532                                       struct iw_request_info *info,
 533                                       union iwreq_data *data, char *extra)
 534 {
 535         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 536         struct ieee80211_channel* chan = local->hw.conf.channel;
 537         u32 reconf_flags = 0;
 538         int new_power_level;
 539
 540         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 541                 return -EINVAL;
 542         if (data->txpower.flags & IW_TXPOW_RANGE)
 543                 return -EINVAL;
 544         if (!chan)
 545                 return -EINVAL;
 546
 547         if (data->txpower.fixed)
 548                 new_power_level = min(data->txpower.value, chan->max_power);
 549         else /* Automatic power level setting */
 550                 new_power_level = chan->max_power;
 551
 552         if (local->hw.conf.power_level != new_power_level) {
 553                 local->hw.conf.power_level = new_power_level;
 554                 reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
 555         }
 556
 557         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 558                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 559                 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
 560                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 561         }
 562
 563         if (reconf_flags)
 564                 ieee80211_hw_config(local, reconf_flags);
 565
 566         return 0;
 567 }
 568
 569 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 570                                    struct iw_request_info *info,
 571                                    union iwreq_data *data, char *extra)
 572 {
 573         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 574
 575         data->txpower.fixed = 1;
 576         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 577         data->txpower.value = local->hw.conf.power_level;
 578         data->txpower.flags = IW_TXPOW_DBM;
 579
 580         return 0;
 581 }
 582
 583 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 584                                   struct iw_request_info *info,
 585                                   struct iw_param *rts, char *extra)
 586 {
 587         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 588
 589         if (rts->disabled)
 590                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 591         else if (!rts->fixed)
 592                 /* if the rts value is not fixed, then take default */
 593                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 594         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 595                 return -EINVAL;
 596         else
 597                 local->rts_threshold = rts->value;
 598
 599         /* If the wlan card performs RTS/CTS in hardware/firmware,
 600          * configure it here */
 601
 602         if (local->ops->set_rts_threshold)
 603                 local->ops->set_rts_threshold(local_to_hw(local),
 604                                              local->rts_threshold);
 605
 606         return 0;
 607 }
 608
 609 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 610                                   struct iw_request_info *info,
 611                                   struct iw_param *rts, char *extra)
 612 {
 613         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 614
 615         rts->value = local->rts_threshold;
 616         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 617         rts->fixed = 1;
 618
 619         return 0;
 620 }
 621
 622
 623 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 624                                    struct iw_request_info *info,
 625                                    struct iw_param *frag, char *extra)
 626 {
 627         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 628
 629         if (frag->disabled)
 630                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 631         else if (!frag->fixed)
 632                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 633         else if (frag->value < 256 ||
 634                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 635                 return -EINVAL;
 636         else {
 637                 /* Fragment length must be even, so strip LSB. */
 638                 local->fragmentation_threshold = frag->value & ~0x1;
 639         }
 640
 641         return 0;
 642 }
 643
 644 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 645                                    struct iw_request_info *info,
 646                                    struct iw_param *frag, char *extra)
 647 {
 648         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 649
 650         frag->value = local->fragmentation_threshold;
 651         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
 652         frag->fixed = 1;
 653
 654         return 0;
 655 }
 656
 657
 658 static int ieee80211_ioctl_siwretry(struct net_device *dev,
 659                                     struct iw_request_info *info,
 660                                     struct iw_param *retry, char *extra)
 661 {
 662         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 663
 664         if (retry->disabled ||
 665             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 666                 return -EINVAL;
 667
 668         if (retry->flags & IW_RETRY_MAX) {
 669                 local->hw.conf.long_frame_max_tx_count = retry->value;
 670         } else if (retry->flags & IW_RETRY_MIN) {
 671                 local->hw.conf.short_frame_max_tx_count = retry->value;
 672         } else {
 673                 local->hw.conf.long_frame_max_tx_count = retry->value;
 674                 local->hw.conf.short_frame_max_tx_count = retry->value;
 675         }
 676
 677         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
 678
 679         return 0;
 680 }
 681
 682
 683 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 684                                     struct iw_request_info *info,
 685                                     struct iw_param *retry, char *extra)
 686 {
 687         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 688
 689         retry->disabled = 0;
 690         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 691                 /* first return min value, iwconfig will ask max value
 692                  * later if needed */
 693                 retry->flags |= IW_RETRY_LIMIT;
 694                 retry->value = local->hw.conf.short_frame_max_tx_count;
 695                 if (local->hw.conf.long_frame_max_tx_count !=
 696                     local->hw.conf.short_frame_max_tx_count)
 697                         retry->flags |= IW_RETRY_MIN;
 698                 return 0;
 699         }
 700         if (retry->flags & IW_RETRY_MAX) {
 701                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 702                 retry->value = local->hw.conf.long_frame_max_tx_count;
 703         }
 704
 705         return 0;
 706 }
 707
 708 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
 709                                    struct iw_request_info *info,
 710                                    struct iw_point *data, char *extra)
 711 {
 712         struct ieee80211_sub_if_data *sdata;
 713         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 714
 715         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 716         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
 717             sdata->vif.type != NL80211_IFTYPE_ADHOC)
 718                 return -EINVAL;
 719
 720         switch (mlme->cmd) {
 721         case IW_MLME_DEAUTH:
 722                 /* TODO: mlme->addr.sa_data */
 723                 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
 724         case IW_MLME_DISASSOC:
 725                 /* TODO: mlme->addr.sa_data */
 726                 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
 727         default:
 728                 return -EOPNOTSUPP;
 729         }
 730 }
 731
 732
 733 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 734                                      struct iw_request_info *info,
 735                                      struct iw_point *erq, char *keybuf)
 736 {
 737         struct ieee80211_sub_if_data *sdata;
 738         int idx, i, alg = ALG_WEP;
 739         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 740         int remove = 0;
 741
 742         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 743
 744         idx = erq->flags & IW_ENCODE_INDEX;
 745         if (idx == 0) {
 746                 if (sdata->default_key)
 747                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 748                                 if (sdata->default_key == sdata->keys[i]) {
 749                                         idx = i;
 750                                         break;
 751                                 }
 752                         }
 753         } else if (idx < 1 || idx > 4)
 754                 return -EINVAL;
 755         else
 756                 idx--;
 757
 758         if (erq->flags & IW_ENCODE_DISABLED)
 759                 remove = 1;
 760         else if (erq->length == 0) {
 761                 /* No key data - just set the default TX key index */
 762                 ieee80211_set_default_key(sdata, idx);
 763                 return 0;
 764         }
 765
 766         return ieee80211_set_encryption(
 767                 sdata, bcaddr,
 768                 idx, alg, remove,
 769                 !sdata->default_key,
 770                 keybuf, erq->length);
 771 }
 772
 773
 774 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 775                                      struct iw_request_info *info,
 776                                      struct iw_point *erq, char *key)
 777 {
 778         struct ieee80211_sub_if_data *sdata;
 779         int idx, i;
 780
 781         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 782
 783         idx = erq->flags & IW_ENCODE_INDEX;
 784         if (idx < 1 || idx > 4) {
 785                 idx = -1;
 786                 if (!sdata->default_key)
 787                         idx = 0;
 788                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 789                         if (sdata->default_key == sdata->keys[i]) {
 790                                 idx = i;
 791                                 break;
 792                         }
 793                 }
 794                 if (idx < 0)
 795                         return -EINVAL;
 796         } else
 797                 idx--;
 798
 799         erq->flags = idx + 1;
 800
 801         if (!sdata->keys[idx]) {
 802                 erq->length = 0;
 803                 erq->flags |= IW_ENCODE_DISABLED;
 804                 return 0;
 805         }
 806
 807         memcpy(key, sdata->keys[idx]->conf.key,
 808                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 809         erq->length = sdata->keys[idx]->conf.keylen;
 810         erq->flags |= IW_ENCODE_ENABLED;
 811
 812         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 813                 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
 814                 switch (ifsta->auth_alg) {
 815                 case WLAN_AUTH_OPEN:
 816                 case WLAN_AUTH_LEAP:
 817                         erq->flags |= IW_ENCODE_OPEN;
 818                         break;
 819                 case WLAN_AUTH_SHARED_KEY:
 820                         erq->flags |= IW_ENCODE_RESTRICTED;
 821                         break;
 822                 }
 823         }
 824
 825         return 0;
 826 }
 827
 828 static int ieee80211_ioctl_siwpower(struct net_device *dev,
 829                                     struct iw_request_info *info,
 830                                     struct iw_param *wrq,
 831                                     char *extra)
 832 {
 833         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 834         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 835         struct ieee80211_conf *conf = &local->hw.conf;
 836         int ret = 0, timeout = 0;
 837         bool ps;
 838
 839         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 840                 return -EINVAL;
 841
 842         if (wrq->disabled) {
 843                 ps = false;
 844                 timeout = 0;
 845                 goto set;
 846         }
 847
 848         switch (wrq->flags & IW_POWER_MODE) {
 849         case IW_POWER_ON:       /* If not specified */
 850         case IW_POWER_MODE:     /* If set all mask */
 851         case IW_POWER_ALL_R:    /* If explicitely state all */
 852                 ps = true;
 853                 break;
 854         default:                /* Otherwise we ignore */
 855                 break;
 856         }
 857
 858         if (wrq->flags & IW_POWER_TIMEOUT)
 859                 timeout = wrq->value / 1000;
 860
 861 set:
 862         if (ps == local->powersave && timeout == local->dynamic_ps_timeout)
 863                 return ret;
 864
 865         local->powersave = ps;
 866         local->dynamic_ps_timeout = timeout;
 867
 868         if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) {
 869                 if (!(local->hw.flags & IEEE80211_HW_NO_STACK_DYNAMIC_PS) &&
 870                     local->dynamic_ps_timeout > 0)
 871                         mod_timer(&local->dynamic_ps_timer, jiffies +
 872                                   msecs_to_jiffies(local->dynamic_ps_timeout));
 873                 else {
 874                         if (local->powersave)
 875                                 conf->flags |= IEEE80211_CONF_PS;
 876                         else
 877                                 conf->flags &= ~IEEE80211_CONF_PS;
 878                 }
 879                 ret = ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
 880         }
 881
 882         return ret;
 883 }
 884
 885 static int ieee80211_ioctl_giwpower(struct net_device *dev,
 886                                     struct iw_request_info *info,
 887                                     union iwreq_data *wrqu,
 888                                     char *extra)
 889 {
 890         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 891
 892         wrqu->power.disabled = !local->powersave;
 893
 894         return 0;
 895 }
 896
 897 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 898                                    struct iw_request_info *info,
 899                                    struct iw_param *data, char *extra)
 900 {
 901         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 902         int ret = 0;
 903
 904         switch (data->flags & IW_AUTH_INDEX) {
 905         case IW_AUTH_WPA_VERSION:
 906         case IW_AUTH_CIPHER_PAIRWISE:
 907         case IW_AUTH_CIPHER_GROUP:
 908         case IW_AUTH_WPA_ENABLED:
 909         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 910         case IW_AUTH_KEY_MGMT:
 911                 break;
 912         case IW_AUTH_DROP_UNENCRYPTED:
 913                 sdata->drop_unencrypted = !!data->value;
 914                 break;
 915         case IW_AUTH_PRIVACY_INVOKED:
 916                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
 917                         ret = -EINVAL;
 918                 else {
 919                         sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 920                         /*
 921                          * Privacy invoked by wpa_supplicant, store the
 922                          * value and allow associating to a protected
 923                          * network without having a key up front.
 924                          */
 925                         if (data->value)
 926                                 sdata->u.sta.flags |=
 927                                         IEEE80211_STA_PRIVACY_INVOKED;
 928                 }
 929                 break;
 930         case IW_AUTH_80211_AUTH_ALG:
 931                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 932                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
 933                         sdata->u.sta.auth_algs = data->value;
 934                 else
 935                         ret = -EOPNOTSUPP;
 936                 break;
 937         default:
 938                 ret = -EOPNOTSUPP;
 939                 break;
 940         }
 941         return ret;
 942 }
 943
 944 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 945 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 946 {
 947         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 948         struct iw_statistics *wstats = &local->wstats;
 949         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 950         struct sta_info *sta = NULL;
 951
 952         rcu_read_lock();
 953
 954         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 955             sdata->vif.type == NL80211_IFTYPE_ADHOC)
 956                 sta = sta_info_get(local, sdata->u.sta.bssid);
 957         if (!sta) {
 958                 wstats->discard.fragment = 0;
 959                 wstats->discard.misc = 0;
 960                 wstats->qual.qual = 0;
 961                 wstats->qual.level = 0;
 962                 wstats->qual.noise = 0;
 963                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
 964         } else {
 965                 wstats->qual.level = sta->last_signal;
 966                 wstats->qual.qual = sta->last_qual;
 967                 wstats->qual.noise = sta->last_noise;
 968                 wstats->qual.updated = local->wstats_flags;
 969         }
 970
 971         rcu_read_unlock();
 972
 973         return wstats;
 974 }
 975
 976 static int ieee80211_ioctl_giwauth(struct net_device *dev,
 977                                    struct iw_request_info *info,
 978                                    struct iw_param *data, char *extra)
 979 {
 980         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 981         int ret = 0;
 982
 983         switch (data->flags & IW_AUTH_INDEX) {
 984         case IW_AUTH_80211_AUTH_ALG:
 985                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 986                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
 987                         data->value = sdata->u.sta.auth_algs;
 988                 else
 989                         ret = -EOPNOTSUPP;
 990                 break;
 991         default:
 992                 ret = -EOPNOTSUPP;
 993                 break;
 994         }
 995         return ret;
 996 }
 997
 998
 999 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1000                                         struct iw_request_info *info,
1001                                         struct iw_point *erq, char *extra)
1002 {
1003         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1004         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1005         int uninitialized_var(alg), idx, i, remove = 0;
1006
1007         switch (ext->alg) {
1008         case IW_ENCODE_ALG_NONE:
1009                 remove = 1;
1010                 break;
1011         case IW_ENCODE_ALG_WEP:
1012                 alg = ALG_WEP;
1013                 break;
1014         case IW_ENCODE_ALG_TKIP:
1015                 alg = ALG_TKIP;
1016                 break;
1017         case IW_ENCODE_ALG_CCMP:
1018                 alg = ALG_CCMP;
1019                 break;
1020         default:
1021                 return -EOPNOTSUPP;
1022         }
1023
1024         if (erq->flags & IW_ENCODE_DISABLED)
1025                 remove = 1;
1026
1027         idx = erq->flags & IW_ENCODE_INDEX;
1028         if (idx < 1 || idx > 4) {
1029                 idx = -1;
1030                 if (!sdata->default_key)
1031                         idx = 0;
1032                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1033                         if (sdata->default_key == sdata->keys[i]) {
1034                                 idx = i;
1035                                 break;
1036                         }
1037                 }
1038                 if (idx < 0)
1039                         return -EINVAL;
1040         } else
1041                 idx--;
1042
1043         return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1044                                         remove,
1045                                         ext->ext_flags &
1046                                         IW_ENCODE_EXT_SET_TX_KEY,
1047                                         ext->key, ext->key_len);
1048 }
1049
1050
1051 /* Structures to export the Wireless Handlers */
1052
1053 static const iw_handler ieee80211_handler[] =
1054 {
1055         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1056         (iw_handler) cfg80211_wext_giwname,             /* SIOCGIWNAME */
1057         (iw_handler) NULL,                              /* SIOCSIWNWID */
1058         (iw_handler) NULL,                              /* SIOCGIWNWID */
1059         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1060         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1061         (iw_handler) cfg80211_wext_siwmode,             /* SIOCSIWMODE */
1062         (iw_handler) cfg80211_wext_giwmode,             /* SIOCGIWMODE */
1063         (iw_handler) NULL,                              /* SIOCSIWSENS */
1064         (iw_handler) NULL,                              /* SIOCGIWSENS */
1065         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1066         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1067         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1068         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1069         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1070         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1071         (iw_handler) NULL,                              /* SIOCSIWSPY */
1072         (iw_handler) NULL,                              /* SIOCGIWSPY */
1073         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1074         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1075         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1076         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1077         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1078         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1079         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1080         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1081         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1082         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1083         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1084         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1085         (iw_handler) NULL,                              /* -- hole -- */
1086         (iw_handler) NULL,                              /* -- hole -- */
1087         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1088         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1089         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1090         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1091         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1092         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1093         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1094         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1095         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1096         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1097         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1098         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1099         (iw_handler) ieee80211_ioctl_siwpower,          /* SIOCSIWPOWER */
1100         (iw_handler) ieee80211_ioctl_giwpower,          /* SIOCGIWPOWER */
1101         (iw_handler) NULL,                              /* -- hole -- */
1102         (iw_handler) NULL,                              /* -- hole -- */
1103         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1104         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1105         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1106         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1107         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1108         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1109         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1110         (iw_handler) NULL,                              /* -- hole -- */
1111 };
1112
1113 const struct iw_handler_def ieee80211_iw_handler_def =
1114 {
1115         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1116         .standard       = (iw_handler *) ieee80211_handler,
1117         .get_wireless_stats = ieee80211_get_wireless_stats,
1118 };