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_ADHOC ||
 234             sdata->vif.type == NL80211_IFTYPE_STATION)
 235                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 236
 237         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 238         if (freq->e == 0) {
 239                 if (freq->m < 0) {
 240                         if (sdata->vif.type == NL80211_IFTYPE_ADHOC ||
 241                             sdata->vif.type == NL80211_IFTYPE_STATION)
 242                                 sdata->u.sta.flags |=
 243                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
 244                         return 0;
 245                 } else
 246                         return ieee80211_set_freq(sdata,
 247                                 ieee80211_channel_to_frequency(freq->m));
 248         } else {
 249                 int i, div = 1000000;
 250                 for (i = 0; i < freq->e; i++)
 251                         div /= 10;
 252                 if (div > 0)
 253                         return ieee80211_set_freq(sdata, freq->m / div);
 254                 else
 255                         return -EINVAL;
 256         }
 257 }
 258
 259
 260 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
 261                                    struct iw_request_info *info,
 262                                    struct iw_freq *freq, char *extra)
 263 {
 264         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 265
 266         freq->m = local->hw.conf.channel->center_freq;
 267         freq->e = 6;
 268
 269         return 0;
 270 }
 271
 272
 273 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 274                                     struct iw_request_info *info,
 275                                     struct iw_point *data, char *ssid)
 276 {
 277         struct ieee80211_sub_if_data *sdata;
 278         size_t len = data->length;
 279
 280         /* iwconfig uses nul termination in SSID.. */
 281         if (len > 0 && ssid[len - 1] == '\0')
 282                 len--;
 283
 284         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 285         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 286             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 287                 int ret;
 288                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 289                         if (len > IEEE80211_MAX_SSID_LEN)
 290                                 return -EINVAL;
 291                         memcpy(sdata->u.sta.ssid, ssid, len);
 292                         sdata->u.sta.ssid_len = len;
 293                         return 0;
 294                 }
 295                 if (data->flags)
 296                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 297                 else
 298                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 299                 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
 300                 if (ret)
 301                         return ret;
 302                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
 303                 return 0;
 304         }
 305
 306         return -EOPNOTSUPP;
 307 }
 308
 309
 310 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 311                                     struct iw_request_info *info,
 312                                     struct iw_point *data, char *ssid)
 313 {
 314         size_t len;
 315
 316         struct ieee80211_sub_if_data *sdata;
 317         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 318         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 319             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 320                 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
 321                 if (res == 0) {
 322                         data->length = len;
 323                         data->flags = 1;
 324                 } else
 325                         data->flags = 0;
 326                 return res;
 327         }
 328
 329         return -EOPNOTSUPP;
 330 }
 331
 332
 333 static int ieee80211_ioctl_siwap(struct net_device *dev,
 334                                  struct iw_request_info *info,
 335                                  struct sockaddr *ap_addr, char *extra)
 336 {
 337         struct ieee80211_sub_if_data *sdata;
 338
 339         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 340         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 341             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 342                 int ret;
 343                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 344                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
 345                                ETH_ALEN);
 346                         return 0;
 347                 }
 348                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 349                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 350                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 351                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 352                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 353                 else
 354                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 355                 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
 356                 if (ret)
 357                         return ret;
 358                 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
 359                 return 0;
 360         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 361                 /*
 362                  * If it is necessary to update the WDS peer address
 363                  * while the interface is running, then we need to do
 364                  * more work here, namely if it is running we need to
 365                  * add a new and remove the old STA entry, this is
 366                  * normally handled by _open() and _stop().
 367                  */
 368                 if (netif_running(dev))
 369                         return -EBUSY;
 370
 371                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 372                        ETH_ALEN);
 373
 374                 return 0;
 375         }
 376
 377         return -EOPNOTSUPP;
 378 }
 379
 380
 381 static int ieee80211_ioctl_giwap(struct net_device *dev,
 382                                  struct iw_request_info *info,
 383                                  struct sockaddr *ap_addr, char *extra)
 384 {
 385         struct ieee80211_sub_if_data *sdata;
 386
 387         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 388         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 389             sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 390                 if (sdata->u.sta.state == IEEE80211_STA_MLME_ASSOCIATED ||
 391                     sdata->u.sta.state == IEEE80211_STA_MLME_IBSS_JOINED) {
 392                         ap_addr->sa_family = ARPHRD_ETHER;
 393                         memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
 394                         return 0;
 395                 } else {
 396                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
 397                         return 0;
 398                 }
 399         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 400                 ap_addr->sa_family = ARPHRD_ETHER;
 401                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 402                 return 0;
 403         }
 404
 405         return -EOPNOTSUPP;
 406 }
 407
 408
 409 static int ieee80211_ioctl_siwscan(struct net_device *dev,
 410                                    struct iw_request_info *info,
 411                                    union iwreq_data *wrqu, char *extra)
 412 {
 413         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 414         struct iw_scan_req *req = NULL;
 415         u8 *ssid = NULL;
 416         size_t ssid_len = 0;
 417
 418         if (!netif_running(dev))
 419                 return -ENETDOWN;
 420
 421         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
 422             sdata->vif.type != NL80211_IFTYPE_ADHOC &&
 423             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
 424                 return -EOPNOTSUPP;
 425
 426         /* if SSID was specified explicitly then use that */
 427         if (wrqu->data.length == sizeof(struct iw_scan_req) &&
 428             wrqu->data.flags & IW_SCAN_THIS_ESSID) {
 429                 req = (struct iw_scan_req *)extra;
 430                 ssid = req->essid;
 431                 ssid_len = req->essid_len;
 432         }
 433
 434         return ieee80211_request_scan(sdata, ssid, ssid_len);
 435 }
 436
 437
 438 static int ieee80211_ioctl_giwscan(struct net_device *dev,
 439                                    struct iw_request_info *info,
 440                                    struct iw_point *data, char *extra)
 441 {
 442         int res;
 443         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 444         struct ieee80211_sub_if_data *sdata;
 445
 446         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 447
 448         if (local->sw_scanning || local->hw_scanning)
 449                 return -EAGAIN;
 450
 451         res = ieee80211_scan_results(local, info, extra, data->length);
 452         if (res >= 0) {
 453                 data->length = res;
 454                 return 0;
 455         }
 456         data->length = 0;
 457         return res;
 458 }
 459
 460
 461 static int ieee80211_ioctl_siwrate(struct net_device *dev,
 462                                   struct iw_request_info *info,
 463                                   struct iw_param *rate, char *extra)
 464 {
 465         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 466         int i, err = -EINVAL;
 467         u32 target_rate = rate->value / 100000;
 468         struct ieee80211_sub_if_data *sdata;
 469         struct ieee80211_supported_band *sband;
 470
 471         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 472
 473         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 474
 475         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
 476          * target_rate = X, rate->fixed = 1 means only rate X
 477          * target_rate = X, rate->fixed = 0 means all rates <= X */
 478         sdata->max_ratectrl_rateidx = -1;
 479         sdata->force_unicast_rateidx = -1;
 480         if (rate->value < 0)
 481                 return 0;
 482
 483         for (i=0; i< sband->n_bitrates; i++) {
 484                 struct ieee80211_rate *brate = &sband->bitrates[i];
 485                 int this_rate = brate->bitrate;
 486
 487                 if (target_rate == this_rate) {
 488                         sdata->max_ratectrl_rateidx = i;
 489                         if (rate->fixed)
 490                                 sdata->force_unicast_rateidx = i;
 491                         err = 0;
 492                         break;
 493                 }
 494         }
 495         return err;
 496 }
 497
 498 static int ieee80211_ioctl_giwrate(struct net_device *dev,
 499                                   struct iw_request_info *info,
 500                                   struct iw_param *rate, char *extra)
 501 {
 502         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 503         struct sta_info *sta;
 504         struct ieee80211_sub_if_data *sdata;
 505         struct ieee80211_supported_band *sband;
 506
 507         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 508
 509         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 510                 return -EOPNOTSUPP;
 511
 512         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 513
 514         rcu_read_lock();
 515
 516         sta = sta_info_get(local, sdata->u.sta.bssid);
 517
 518         if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
 519                 rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
 520         else
 521                 rate->value = 0;
 522
 523         rcu_read_unlock();
 524
 525         if (!sta)
 526                 return -ENODEV;
 527
 528         rate->value *= 100000;
 529
 530         return 0;
 531 }
 532
 533 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
 534                                       struct iw_request_info *info,
 535                                       union iwreq_data *data, char *extra)
 536 {
 537         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 538         struct ieee80211_channel* chan = local->hw.conf.channel;
 539         u32 reconf_flags = 0;
 540         int new_power_level;
 541
 542         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 543                 return -EINVAL;
 544         if (data->txpower.flags & IW_TXPOW_RANGE)
 545                 return -EINVAL;
 546         if (!chan)
 547                 return -EINVAL;
 548
 549         if (data->txpower.fixed)
 550                 new_power_level = min(data->txpower.value, chan->max_power);
 551         else /* Automatic power level setting */
 552                 new_power_level = chan->max_power;
 553
 554         local->user_power_level = new_power_level;
 555         if (local->hw.conf.power_level != new_power_level)
 556                 reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
 557
 558         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 559                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 560                 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
 561                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 562         }
 563
 564         if (reconf_flags)
 565                 ieee80211_hw_config(local, reconf_flags);
 566
 567         return 0;
 568 }
 569
 570 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 571                                    struct iw_request_info *info,
 572                                    union iwreq_data *data, char *extra)
 573 {
 574         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 575
 576         data->txpower.fixed = 1;
 577         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 578         data->txpower.value = local->hw.conf.power_level;
 579         data->txpower.flags = IW_TXPOW_DBM;
 580
 581         return 0;
 582 }
 583
 584 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 585                                   struct iw_request_info *info,
 586                                   struct iw_param *rts, char *extra)
 587 {
 588         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 589
 590         if (rts->disabled)
 591                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 592         else if (!rts->fixed)
 593                 /* if the rts value is not fixed, then take default */
 594                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 595         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 596                 return -EINVAL;
 597         else
 598                 local->rts_threshold = rts->value;
 599
 600         /* If the wlan card performs RTS/CTS in hardware/firmware,
 601          * configure it here */
 602
 603         if (local->ops->set_rts_threshold)
 604                 local->ops->set_rts_threshold(local_to_hw(local),
 605                                              local->rts_threshold);
 606
 607         return 0;
 608 }
 609
 610 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 611                                   struct iw_request_info *info,
 612                                   struct iw_param *rts, char *extra)
 613 {
 614         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 615
 616         rts->value = local->rts_threshold;
 617         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 618         rts->fixed = 1;
 619
 620         return 0;
 621 }
 622
 623
 624 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 625                                    struct iw_request_info *info,
 626                                    struct iw_param *frag, char *extra)
 627 {
 628         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 629
 630         if (frag->disabled)
 631                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 632         else if (!frag->fixed)
 633                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 634         else if (frag->value < 256 ||
 635                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 636                 return -EINVAL;
 637         else {
 638                 /* Fragment length must be even, so strip LSB. */
 639                 local->fragmentation_threshold = frag->value & ~0x1;
 640         }
 641
 642         return 0;
 643 }
 644
 645 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 646                                    struct iw_request_info *info,
 647                                    struct iw_param *frag, char *extra)
 648 {
 649         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 650
 651         frag->value = local->fragmentation_threshold;
 652         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
 653         frag->fixed = 1;
 654
 655         return 0;
 656 }
 657
 658
 659 static int ieee80211_ioctl_siwretry(struct net_device *dev,
 660                                     struct iw_request_info *info,
 661                                     struct iw_param *retry, char *extra)
 662 {
 663         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 664
 665         if (retry->disabled ||
 666             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 667                 return -EINVAL;
 668
 669         if (retry->flags & IW_RETRY_MAX) {
 670                 local->hw.conf.long_frame_max_tx_count = retry->value;
 671         } else if (retry->flags & IW_RETRY_MIN) {
 672                 local->hw.conf.short_frame_max_tx_count = retry->value;
 673         } else {
 674                 local->hw.conf.long_frame_max_tx_count = retry->value;
 675                 local->hw.conf.short_frame_max_tx_count = retry->value;
 676         }
 677
 678         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
 679
 680         return 0;
 681 }
 682
 683
 684 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 685                                     struct iw_request_info *info,
 686                                     struct iw_param *retry, char *extra)
 687 {
 688         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 689
 690         retry->disabled = 0;
 691         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 692                 /* first return min value, iwconfig will ask max value
 693                  * later if needed */
 694                 retry->flags |= IW_RETRY_LIMIT;
 695                 retry->value = local->hw.conf.short_frame_max_tx_count;
 696                 if (local->hw.conf.long_frame_max_tx_count !=
 697                     local->hw.conf.short_frame_max_tx_count)
 698                         retry->flags |= IW_RETRY_MIN;
 699                 return 0;
 700         }
 701         if (retry->flags & IW_RETRY_MAX) {
 702                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 703                 retry->value = local->hw.conf.long_frame_max_tx_count;
 704         }
 705
 706         return 0;
 707 }
 708
 709 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
 710                                    struct iw_request_info *info,
 711                                    struct iw_point *data, char *extra)
 712 {
 713         struct ieee80211_sub_if_data *sdata;
 714         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 715
 716         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 717         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
 718             sdata->vif.type != NL80211_IFTYPE_ADHOC)
 719                 return -EINVAL;
 720
 721         switch (mlme->cmd) {
 722         case IW_MLME_DEAUTH:
 723                 /* TODO: mlme->addr.sa_data */
 724                 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
 725         case IW_MLME_DISASSOC:
 726                 /* TODO: mlme->addr.sa_data */
 727                 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
 728         default:
 729                 return -EOPNOTSUPP;
 730         }
 731 }
 732
 733
 734 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 735                                      struct iw_request_info *info,
 736                                      struct iw_point *erq, char *keybuf)
 737 {
 738         struct ieee80211_sub_if_data *sdata;
 739         int idx, i, alg = ALG_WEP;
 740         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 741         int remove = 0;
 742
 743         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 744
 745         idx = erq->flags & IW_ENCODE_INDEX;
 746         if (idx == 0) {
 747                 if (sdata->default_key)
 748                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 749                                 if (sdata->default_key == sdata->keys[i]) {
 750                                         idx = i;
 751                                         break;
 752                                 }
 753                         }
 754         } else if (idx < 1 || idx > 4)
 755                 return -EINVAL;
 756         else
 757                 idx--;
 758
 759         if (erq->flags & IW_ENCODE_DISABLED)
 760                 remove = 1;
 761         else if (erq->length == 0) {
 762                 /* No key data - just set the default TX key index */
 763                 ieee80211_set_default_key(sdata, idx);
 764                 return 0;
 765         }
 766
 767         return ieee80211_set_encryption(
 768                 sdata, bcaddr,
 769                 idx, alg, remove,
 770                 !sdata->default_key,
 771                 keybuf, erq->length);
 772 }
 773
 774
 775 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 776                                      struct iw_request_info *info,
 777                                      struct iw_point *erq, char *key)
 778 {
 779         struct ieee80211_sub_if_data *sdata;
 780         int idx, i;
 781
 782         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 783
 784         idx = erq->flags & IW_ENCODE_INDEX;
 785         if (idx < 1 || idx > 4) {
 786                 idx = -1;
 787                 if (!sdata->default_key)
 788                         idx = 0;
 789                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 790                         if (sdata->default_key == sdata->keys[i]) {
 791                                 idx = i;
 792                                 break;
 793                         }
 794                 }
 795                 if (idx < 0)
 796                         return -EINVAL;
 797         } else
 798                 idx--;
 799
 800         erq->flags = idx + 1;
 801
 802         if (!sdata->keys[idx]) {
 803                 erq->length = 0;
 804                 erq->flags |= IW_ENCODE_DISABLED;
 805                 return 0;
 806         }
 807
 808         memcpy(key, sdata->keys[idx]->conf.key,
 809                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 810         erq->length = sdata->keys[idx]->conf.keylen;
 811         erq->flags |= IW_ENCODE_ENABLED;
 812
 813         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 814                 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
 815                 switch (ifsta->auth_alg) {
 816                 case WLAN_AUTH_OPEN:
 817                 case WLAN_AUTH_LEAP:
 818                         erq->flags |= IW_ENCODE_OPEN;
 819                         break;
 820                 case WLAN_AUTH_SHARED_KEY:
 821                         erq->flags |= IW_ENCODE_RESTRICTED;
 822                         break;
 823                 }
 824         }
 825
 826         return 0;
 827 }
 828
 829 static int ieee80211_ioctl_siwpower(struct net_device *dev,
 830                                     struct iw_request_info *info,
 831                                     struct iw_param *wrq,
 832                                     char *extra)
 833 {
 834         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 835         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 836         struct ieee80211_conf *conf = &local->hw.conf;
 837         int ret = 0, timeout = 0;
 838         bool ps;
 839
 840         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 841                 return -EINVAL;
 842
 843         if (wrq->disabled) {
 844                 ps = false;
 845                 timeout = 0;
 846                 goto set;
 847         }
 848
 849         switch (wrq->flags & IW_POWER_MODE) {
 850         case IW_POWER_ON:       /* If not specified */
 851         case IW_POWER_MODE:     /* If set all mask */
 852         case IW_POWER_ALL_R:    /* If explicitely state all */
 853                 ps = true;
 854                 break;
 855         default:                /* Otherwise we ignore */
 856                 return -EINVAL;
 857         }
 858
 859         if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
 860                 return -EINVAL;
 861
 862         if (wrq->flags & IW_POWER_TIMEOUT)
 863                 timeout = wrq->value / 1000;
 864
 865 set:
 866         if (ps == local->powersave && timeout == conf->dynamic_ps_timeout)
 867                 return ret;
 868
 869         local->powersave = ps;
 870         conf->dynamic_ps_timeout = timeout;
 871
 872         if (local->hw.flags & IEEE80211_HW_NO_STACK_DYNAMIC_PS) {
 873                 ret = ieee80211_hw_config(local,
 874                                           IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT);
 875         } else if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) {
 876                 if (conf->dynamic_ps_timeout > 0)
 877                         mod_timer(&local->dynamic_ps_timer, jiffies +
 878                                   msecs_to_jiffies(conf->dynamic_ps_timeout));
 879                 else {
 880                         if (local->powersave) {
 881                                 ieee80211_send_nullfunc(local, sdata, 1);
 882                                 conf->flags |= IEEE80211_CONF_PS;
 883                                 ret = ieee80211_hw_config(local,
 884                                                 IEEE80211_CONF_CHANGE_PS);
 885                         } else {
 886                                 conf->flags &= ~IEEE80211_CONF_PS;
 887                                 ret = ieee80211_hw_config(local,
 888                                                 IEEE80211_CONF_CHANGE_PS);
 889                                 ieee80211_send_nullfunc(local, sdata, 0);
 890                         }
 891                 }
 892         }
 893
 894         return ret;
 895 }
 896
 897 static int ieee80211_ioctl_giwpower(struct net_device *dev,
 898                                     struct iw_request_info *info,
 899                                     union iwreq_data *wrqu,
 900                                     char *extra)
 901 {
 902         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 903
 904         wrqu->power.disabled = !local->powersave;
 905
 906         return 0;
 907 }
 908
 909 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 910                                    struct iw_request_info *info,
 911                                    struct iw_param *data, char *extra)
 912 {
 913         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 914         int ret = 0;
 915
 916         switch (data->flags & IW_AUTH_INDEX) {
 917         case IW_AUTH_WPA_VERSION:
 918         case IW_AUTH_CIPHER_GROUP:
 919         case IW_AUTH_WPA_ENABLED:
 920         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 921         case IW_AUTH_KEY_MGMT:
 922                 break;
 923         case IW_AUTH_CIPHER_PAIRWISE:
 924                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 925                         if (data->value & (IW_AUTH_CIPHER_WEP40 |
 926                             IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_TKIP))
 927                                 sdata->u.sta.flags |=
 928                                         IEEE80211_STA_TKIP_WEP_USED;
 929                         else
 930                                 sdata->u.sta.flags &=
 931                                         ~IEEE80211_STA_TKIP_WEP_USED;
 932                 }
 933                 break;
 934         case IW_AUTH_DROP_UNENCRYPTED:
 935                 sdata->drop_unencrypted = !!data->value;
 936                 break;
 937         case IW_AUTH_PRIVACY_INVOKED:
 938                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
 939                         ret = -EINVAL;
 940                 else {
 941                         sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 942                         /*
 943                          * Privacy invoked by wpa_supplicant, store the
 944                          * value and allow associating to a protected
 945                          * network without having a key up front.
 946                          */
 947                         if (data->value)
 948                                 sdata->u.sta.flags |=
 949                                         IEEE80211_STA_PRIVACY_INVOKED;
 950                 }
 951                 break;
 952         case IW_AUTH_80211_AUTH_ALG:
 953                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 954                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
 955                         sdata->u.sta.auth_algs = data->value;
 956                 else
 957                         ret = -EOPNOTSUPP;
 958                 break;
 959         default:
 960                 ret = -EOPNOTSUPP;
 961                 break;
 962         }
 963         return ret;
 964 }
 965
 966 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 967 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 968 {
 969         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 970         struct iw_statistics *wstats = &local->wstats;
 971         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 972         struct sta_info *sta = NULL;
 973
 974         rcu_read_lock();
 975
 976         if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 977             sdata->vif.type == NL80211_IFTYPE_ADHOC)
 978                 sta = sta_info_get(local, sdata->u.sta.bssid);
 979         if (!sta) {
 980                 wstats->discard.fragment = 0;
 981                 wstats->discard.misc = 0;
 982                 wstats->qual.qual = 0;
 983                 wstats->qual.level = 0;
 984                 wstats->qual.noise = 0;
 985                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
 986         } else {
 987                 wstats->qual.level = sta->last_signal;
 988                 wstats->qual.qual = sta->last_qual;
 989                 wstats->qual.noise = sta->last_noise;
 990                 wstats->qual.updated = local->wstats_flags;
 991         }
 992
 993         rcu_read_unlock();
 994
 995         return wstats;
 996 }
 997
 998 static int ieee80211_ioctl_giwauth(struct net_device *dev,
 999                                    struct iw_request_info *info,
1000                                    struct iw_param *data, char *extra)
1001 {
1002         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1003         int ret = 0;
1004
1005         switch (data->flags & IW_AUTH_INDEX) {
1006         case IW_AUTH_80211_AUTH_ALG:
1007                 if (sdata->vif.type == NL80211_IFTYPE_STATION ||
1008                     sdata->vif.type == NL80211_IFTYPE_ADHOC)
1009                         data->value = sdata->u.sta.auth_algs;
1010                 else
1011                         ret = -EOPNOTSUPP;
1012                 break;
1013         default:
1014                 ret = -EOPNOTSUPP;
1015                 break;
1016         }
1017         return ret;
1018 }
1019
1020
1021 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1022                                         struct iw_request_info *info,
1023                                         struct iw_point *erq, char *extra)
1024 {
1025         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1026         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1027         int uninitialized_var(alg), idx, i, remove = 0;
1028
1029         switch (ext->alg) {
1030         case IW_ENCODE_ALG_NONE:
1031                 remove = 1;
1032                 break;
1033         case IW_ENCODE_ALG_WEP:
1034                 alg = ALG_WEP;
1035                 break;
1036         case IW_ENCODE_ALG_TKIP:
1037                 alg = ALG_TKIP;
1038                 break;
1039         case IW_ENCODE_ALG_CCMP:
1040                 alg = ALG_CCMP;
1041                 break;
1042         default:
1043                 return -EOPNOTSUPP;
1044         }
1045
1046         if (erq->flags & IW_ENCODE_DISABLED)
1047                 remove = 1;
1048
1049         idx = erq->flags & IW_ENCODE_INDEX;
1050         if (idx < 1 || idx > 4) {
1051                 idx = -1;
1052                 if (!sdata->default_key)
1053                         idx = 0;
1054                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1055                         if (sdata->default_key == sdata->keys[i]) {
1056                                 idx = i;
1057                                 break;
1058                         }
1059                 }
1060                 if (idx < 0)
1061                         return -EINVAL;
1062         } else
1063                 idx--;
1064
1065         return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1066                                         remove,
1067                                         ext->ext_flags &
1068                                         IW_ENCODE_EXT_SET_TX_KEY,
1069                                         ext->key, ext->key_len);
1070 }
1071
1072
1073 /* Structures to export the Wireless Handlers */
1074
1075 static const iw_handler ieee80211_handler[] =
1076 {
1077         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1078         (iw_handler) cfg80211_wext_giwname,             /* SIOCGIWNAME */
1079         (iw_handler) NULL,                              /* SIOCSIWNWID */
1080         (iw_handler) NULL,                              /* SIOCGIWNWID */
1081         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1082         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1083         (iw_handler) cfg80211_wext_siwmode,             /* SIOCSIWMODE */
1084         (iw_handler) cfg80211_wext_giwmode,             /* SIOCGIWMODE */
1085         (iw_handler) NULL,                              /* SIOCSIWSENS */
1086         (iw_handler) NULL,                              /* SIOCGIWSENS */
1087         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1088         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1089         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1090         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1091         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1092         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1093         (iw_handler) NULL,                              /* SIOCSIWSPY */
1094         (iw_handler) NULL,                              /* SIOCGIWSPY */
1095         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1096         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1097         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1098         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1099         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1100         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1101         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1102         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1103         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1104         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1105         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1106         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1107         (iw_handler) NULL,                              /* -- hole -- */
1108         (iw_handler) NULL,                              /* -- hole -- */
1109         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1110         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1111         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1112         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1113         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1114         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1115         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1116         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1117         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1118         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1119         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1120         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1121         (iw_handler) ieee80211_ioctl_siwpower,          /* SIOCSIWPOWER */
1122         (iw_handler) ieee80211_ioctl_giwpower,          /* SIOCGIWPOWER */
1123         (iw_handler) NULL,                              /* -- hole -- */
1124         (iw_handler) NULL,                              /* -- hole -- */
1125         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1126         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1127         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1128         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1129         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1130         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1131         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1132         (iw_handler) NULL,                              /* -- hole -- */
1133 };
1134
1135 const struct iw_handler_def ieee80211_iw_handler_def =
1136 {
1137         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1138         .standard       = (iw_handler *) ieee80211_handler,
1139         .get_wireless_stats = ieee80211_get_wireless_stats,
1140 };