net/mac80211/wext.c

   1 /*
   2  * Copyright 2002-2005, Instant802 Networks, Inc.
   3  * Copyright 2005-2006, Devicescape Software, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/netdevice.h>
  13 #include <linux/types.h>
  14 #include <linux/slab.h>
  15 #include <linux/skbuff.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/if_arp.h>
  18 #include <linux/wireless.h>
  19 #include <net/iw_handler.h>
  20 #include <asm/uaccess.h>
  21
  22 #include <net/mac80211.h>
  23 #include "ieee80211_i.h"
  24 #include "led.h"
  25 #include "rate.h"
  26 #include "wpa.h"
  27 #include "aes_ccm.h"
  28
  29
  30 static int ieee80211_set_encryption(struct ieee80211_sub_if_data *sdata, u8 *sta_addr,
  31                                     int idx, int alg, int remove,
  32                                     int set_tx_key, const u8 *_key,
  33                                     size_t key_len)
  34 {
  35         struct ieee80211_local *local = sdata->local;
  36         struct sta_info *sta;
  37         struct ieee80211_key *key;
  38         int err;
  39
  40         if (alg == ALG_AES_CMAC) {
  41                 if (idx < NUM_DEFAULT_KEYS ||
  42                     idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
  43                         printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d "
  44                                "(BIP)\n", sdata->dev->name, idx);
  45                         return -EINVAL;
  46                 }
  47         } else if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
  48                 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
  49                        sdata->dev->name, idx);
  50                 return -EINVAL;
  51         }
  52
  53         if (remove) {
  54                 rcu_read_lock();
  55
  56                 err = 0;
  57
  58                 if (is_broadcast_ether_addr(sta_addr)) {
  59                         key = sdata->keys[idx];
  60                 } else {
  61                         sta = sta_info_get(local, sta_addr);
  62                         if (!sta) {
  63                                 err = -ENOENT;
  64                                 goto out_unlock;
  65                         }
  66                         key = sta->key;
  67                 }
  68
  69                 ieee80211_key_free(key);
  70         } else {
  71                 key = ieee80211_key_alloc(alg, idx, key_len, _key);
  72                 if (!key)
  73                         return -ENOMEM;
  74
  75                 sta = NULL;
  76                 err = 0;
  77
  78                 rcu_read_lock();
  79
  80                 if (!is_broadcast_ether_addr(sta_addr)) {
  81                         set_tx_key = 0;
  82                         /*
  83                          * According to the standard, the key index of a
  84                          * pairwise key must be zero. However, some AP are
  85                          * broken when it comes to WEP key indices, so we
  86                          * work around this.
  87                          */
  88                         if (idx != 0 && alg != ALG_WEP) {
  89                                 ieee80211_key_free(key);
  90                                 err = -EINVAL;
  91                                 goto out_unlock;
  92                         }
  93
  94                         sta = sta_info_get(local, sta_addr);
  95                         if (!sta) {
  96                                 ieee80211_key_free(key);
  97                                 err = -ENOENT;
  98                                 goto out_unlock;
  99                         }
 100                 }
 101
 102                 if (alg == ALG_WEP &&
 103                         key_len != LEN_WEP40 && key_len != LEN_WEP104) {
 104                         ieee80211_key_free(key);
 105                         err = -EINVAL;
 106                         goto out_unlock;
 107                 }
 108
 109                 ieee80211_key_link(key, sdata, sta);
 110
 111                 if (set_tx_key || (!sta && !sdata->default_key && key))
 112                         ieee80211_set_default_key(sdata, idx);
 113                 if (alg == ALG_AES_CMAC &&
 114                     (set_tx_key || (!sta && !sdata->default_mgmt_key && key)))
 115                         ieee80211_set_default_mgmt_key(sdata, idx);
 116         }
 117
 118  out_unlock:
 119         rcu_read_unlock();
 120
 121         return err;
 122 }
 123
 124 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
 125                                     struct iw_request_info *info,
 126                                     struct iw_point *data, char *extra)
 127 {
 128         struct ieee80211_sub_if_data *sdata;
 129
 130         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 131
 132         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 133                 int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
 134                 if (ret)
 135                         return ret;
 136                 sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 137                 sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
 138                 ieee80211_sta_req_auth(sdata);
 139                 return 0;
 140         }
 141
 142         return -EOPNOTSUPP;
 143 }
 144
 145 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
 146                                    struct iw_request_info *info,
 147                                    struct iw_freq *freq, char *extra)
 148 {
 149         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 150
 151         if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 152                 sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_CHANNEL_SEL;
 153         else if (sdata->vif.type == NL80211_IFTYPE_STATION)
 154                 sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 155
 156         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 157         if (freq->e == 0) {
 158                 if (freq->m < 0) {
 159                         if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 160                                 sdata->u.ibss.flags |=
 161                                         IEEE80211_IBSS_AUTO_CHANNEL_SEL;
 162                         else if (sdata->vif.type == NL80211_IFTYPE_STATION)
 163                                 sdata->u.mgd.flags |=
 164                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
 165                         return 0;
 166                 } else
 167                         return ieee80211_set_freq(sdata,
 168                                 ieee80211_channel_to_frequency(freq->m));
 169         } else {
 170                 int i, div = 1000000;
 171                 for (i = 0; i < freq->e; i++)
 172                         div /= 10;
 173                 if (div > 0)
 174                         return ieee80211_set_freq(sdata, freq->m / div);
 175                 else
 176                         return -EINVAL;
 177         }
 178 }
 179
 180
 181 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
 182                                    struct iw_request_info *info,
 183                                    struct iw_freq *freq, char *extra)
 184 {
 185         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 186
 187         freq->m = local->hw.conf.channel->center_freq;
 188         freq->e = 6;
 189
 190         return 0;
 191 }
 192
 193
 194 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 195                                     struct iw_request_info *info,
 196                                     struct iw_point *data, char *ssid)
 197 {
 198         struct ieee80211_sub_if_data *sdata;
 199         size_t len = data->length;
 200         int ret;
 201
 202         /* iwconfig uses nul termination in SSID.. */
 203         if (len > 0 && ssid[len - 1] == '\0')
 204                 len--;
 205
 206         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 207         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 208                 if (data->flags)
 209                         sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 210                 else
 211                         sdata->u.mgd.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 212
 213                 ret = ieee80211_sta_set_ssid(sdata, ssid, len);
 214                 if (ret)
 215                         return ret;
 216
 217                 sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
 218                 ieee80211_sta_req_auth(sdata);
 219                 return 0;
 220         } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 221                 return ieee80211_ibss_set_ssid(sdata, ssid, len);
 222
 223         return -EOPNOTSUPP;
 224 }
 225
 226
 227 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 228                                     struct iw_request_info *info,
 229                                     struct iw_point *data, char *ssid)
 230 {
 231         size_t len;
 232
 233         struct ieee80211_sub_if_data *sdata;
 234         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 235         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 236                 int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
 237                 if (res == 0) {
 238                         data->length = len;
 239                         data->flags = 1;
 240                 } else
 241                         data->flags = 0;
 242                 return res;
 243         } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 244                 int res = ieee80211_ibss_get_ssid(sdata, ssid, &len);
 245                 if (res == 0) {
 246                         data->length = len;
 247                         data->flags = 1;
 248                 } else
 249                         data->flags = 0;
 250                 return res;
 251         }
 252
 253         return -EOPNOTSUPP;
 254 }
 255
 256
 257 static int ieee80211_ioctl_siwap(struct net_device *dev,
 258                                  struct iw_request_info *info,
 259                                  struct sockaddr *ap_addr, char *extra)
 260 {
 261         struct ieee80211_sub_if_data *sdata;
 262
 263         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 264         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 265                 int ret;
 266
 267                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 268                         sdata->u.mgd.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 269                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 270                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 271                         sdata->u.mgd.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 272                 else
 273                         sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 274                 ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
 275                 if (ret)
 276                         return ret;
 277                 sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
 278                 ieee80211_sta_req_auth(sdata);
 279                 return 0;
 280         } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 281                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 282                         sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL |
 283                                                IEEE80211_IBSS_AUTO_CHANNEL_SEL;
 284                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 285                         sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL;
 286                 else
 287                         sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_BSSID_SEL;
 288
 289                 return ieee80211_ibss_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
 290         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 291                 /*
 292                  * If it is necessary to update the WDS peer address
 293                  * while the interface is running, then we need to do
 294                  * more work here, namely if it is running we need to
 295                  * add a new and remove the old STA entry, this is
 296                  * normally handled by _open() and _stop().
 297                  */
 298                 if (netif_running(dev))
 299                         return -EBUSY;
 300
 301                 memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 302                        ETH_ALEN);
 303
 304                 return 0;
 305         }
 306
 307         return -EOPNOTSUPP;
 308 }
 309
 310
 311 static int ieee80211_ioctl_giwap(struct net_device *dev,
 312                                  struct iw_request_info *info,
 313                                  struct sockaddr *ap_addr, char *extra)
 314 {
 315         struct ieee80211_sub_if_data *sdata;
 316
 317         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 318         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 319                 if (sdata->u.mgd.state == IEEE80211_STA_MLME_ASSOCIATED) {
 320                         ap_addr->sa_family = ARPHRD_ETHER;
 321                         memcpy(&ap_addr->sa_data, sdata->u.mgd.bssid, ETH_ALEN);
 322                 } else
 323                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
 324                 return 0;
 325         } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 326                 if (sdata->u.ibss.state == IEEE80211_IBSS_MLME_JOINED) {
 327                         ap_addr->sa_family = ARPHRD_ETHER;
 328                         memcpy(&ap_addr->sa_data, sdata->u.ibss.bssid, ETH_ALEN);
 329                 } else
 330                         memset(&ap_addr->sa_data, 0, ETH_ALEN);
 331                 return 0;
 332         } else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
 333                 ap_addr->sa_family = ARPHRD_ETHER;
 334                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 335                 return 0;
 336         }
 337
 338         return -EOPNOTSUPP;
 339 }
 340
 341
 342 static int ieee80211_ioctl_siwrate(struct net_device *dev,
 343                                   struct iw_request_info *info,
 344                                   struct iw_param *rate, char *extra)
 345 {
 346         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 347         int i, err = -EINVAL;
 348         u32 target_rate = rate->value / 100000;
 349         struct ieee80211_sub_if_data *sdata;
 350         struct ieee80211_supported_band *sband;
 351
 352         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 353
 354         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 355
 356         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
 357          * target_rate = X, rate->fixed = 1 means only rate X
 358          * target_rate = X, rate->fixed = 0 means all rates <= X */
 359         sdata->max_ratectrl_rateidx = -1;
 360         sdata->force_unicast_rateidx = -1;
 361         if (rate->value < 0)
 362                 return 0;
 363
 364         for (i=0; i< sband->n_bitrates; i++) {
 365                 struct ieee80211_rate *brate = &sband->bitrates[i];
 366                 int this_rate = brate->bitrate;
 367
 368                 if (target_rate == this_rate) {
 369                         sdata->max_ratectrl_rateidx = i;
 370                         if (rate->fixed)
 371                                 sdata->force_unicast_rateidx = i;
 372                         err = 0;
 373                         break;
 374                 }
 375         }
 376         return err;
 377 }
 378
 379 static int ieee80211_ioctl_giwrate(struct net_device *dev,
 380                                   struct iw_request_info *info,
 381                                   struct iw_param *rate, char *extra)
 382 {
 383         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 384         struct sta_info *sta;
 385         struct ieee80211_sub_if_data *sdata;
 386         struct ieee80211_supported_band *sband;
 387
 388         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 389
 390         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 391                 return -EOPNOTSUPP;
 392
 393         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 394
 395         rcu_read_lock();
 396
 397         sta = sta_info_get(local, sdata->u.mgd.bssid);
 398
 399         if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
 400                 rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
 401         else
 402                 rate->value = 0;
 403
 404         rcu_read_unlock();
 405
 406         if (!sta)
 407                 return -ENODEV;
 408
 409         rate->value *= 100000;
 410
 411         return 0;
 412 }
 413
 414 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
 415                                       struct iw_request_info *info,
 416                                       union iwreq_data *data, char *extra)
 417 {
 418         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 419         struct ieee80211_channel* chan = local->hw.conf.channel;
 420         u32 reconf_flags = 0;
 421         int new_power_level;
 422
 423         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 424                 return -EINVAL;
 425         if (data->txpower.flags & IW_TXPOW_RANGE)
 426                 return -EINVAL;
 427         if (!chan)
 428                 return -EINVAL;
 429
 430         if (data->txpower.fixed)
 431                 new_power_level = min(data->txpower.value, chan->max_power);
 432         else /* Automatic power level setting */
 433                 new_power_level = chan->max_power;
 434
 435         local->user_power_level = new_power_level;
 436         if (local->hw.conf.power_level != new_power_level)
 437                 reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
 438
 439         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 440                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 441                 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
 442                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 443         }
 444
 445         if (reconf_flags)
 446                 ieee80211_hw_config(local, reconf_flags);
 447
 448         return 0;
 449 }
 450
 451 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 452                                    struct iw_request_info *info,
 453                                    union iwreq_data *data, char *extra)
 454 {
 455         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 456
 457         data->txpower.fixed = 1;
 458         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 459         data->txpower.value = local->hw.conf.power_level;
 460         data->txpower.flags = IW_TXPOW_DBM;
 461
 462         return 0;
 463 }
 464
 465 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 466                                   struct iw_request_info *info,
 467                                   struct iw_param *rts, char *extra)
 468 {
 469         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 470
 471         if (rts->disabled)
 472                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 473         else if (!rts->fixed)
 474                 /* if the rts value is not fixed, then take default */
 475                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 476         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 477                 return -EINVAL;
 478         else
 479                 local->rts_threshold = rts->value;
 480
 481         /* If the wlan card performs RTS/CTS in hardware/firmware,
 482          * configure it here */
 483
 484         if (local->ops->set_rts_threshold)
 485                 local->ops->set_rts_threshold(local_to_hw(local),
 486                                              local->rts_threshold);
 487
 488         return 0;
 489 }
 490
 491 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 492                                   struct iw_request_info *info,
 493                                   struct iw_param *rts, char *extra)
 494 {
 495         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 496
 497         rts->value = local->rts_threshold;
 498         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 499         rts->fixed = 1;
 500
 501         return 0;
 502 }
 503
 504
 505 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 506                                    struct iw_request_info *info,
 507                                    struct iw_param *frag, char *extra)
 508 {
 509         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 510
 511         if (frag->disabled)
 512                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 513         else if (!frag->fixed)
 514                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 515         else if (frag->value < 256 ||
 516                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 517                 return -EINVAL;
 518         else {
 519                 /* Fragment length must be even, so strip LSB. */
 520                 local->fragmentation_threshold = frag->value & ~0x1;
 521         }
 522
 523         return 0;
 524 }
 525
 526 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 527                                    struct iw_request_info *info,
 528                                    struct iw_param *frag, char *extra)
 529 {
 530         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 531
 532         frag->value = local->fragmentation_threshold;
 533         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
 534         frag->fixed = 1;
 535
 536         return 0;
 537 }
 538
 539
 540 static int ieee80211_ioctl_siwretry(struct net_device *dev,
 541                                     struct iw_request_info *info,
 542                                     struct iw_param *retry, char *extra)
 543 {
 544         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 545
 546         if (retry->disabled ||
 547             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 548                 return -EINVAL;
 549
 550         if (retry->flags & IW_RETRY_MAX) {
 551                 local->hw.conf.long_frame_max_tx_count = retry->value;
 552         } else if (retry->flags & IW_RETRY_MIN) {
 553                 local->hw.conf.short_frame_max_tx_count = retry->value;
 554         } else {
 555                 local->hw.conf.long_frame_max_tx_count = retry->value;
 556                 local->hw.conf.short_frame_max_tx_count = retry->value;
 557         }
 558
 559         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
 560
 561         return 0;
 562 }
 563
 564
 565 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 566                                     struct iw_request_info *info,
 567                                     struct iw_param *retry, char *extra)
 568 {
 569         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 570
 571         retry->disabled = 0;
 572         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 573                 /* first return min value, iwconfig will ask max value
 574                  * later if needed */
 575                 retry->flags |= IW_RETRY_LIMIT;
 576                 retry->value = local->hw.conf.short_frame_max_tx_count;
 577                 if (local->hw.conf.long_frame_max_tx_count !=
 578                     local->hw.conf.short_frame_max_tx_count)
 579                         retry->flags |= IW_RETRY_MIN;
 580                 return 0;
 581         }
 582         if (retry->flags & IW_RETRY_MAX) {
 583                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 584                 retry->value = local->hw.conf.long_frame_max_tx_count;
 585         }
 586
 587         return 0;
 588 }
 589
 590 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
 591                                    struct iw_request_info *info,
 592                                    struct iw_point *data, char *extra)
 593 {
 594         struct ieee80211_sub_if_data *sdata;
 595         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 596
 597         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 598         if (!(sdata->vif.type == NL80211_IFTYPE_STATION))
 599                 return -EINVAL;
 600
 601         switch (mlme->cmd) {
 602         case IW_MLME_DEAUTH:
 603                 /* TODO: mlme->addr.sa_data */
 604                 return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
 605         case IW_MLME_DISASSOC:
 606                 /* TODO: mlme->addr.sa_data */
 607                 return ieee80211_sta_disassociate(sdata, mlme->reason_code);
 608         default:
 609                 return -EOPNOTSUPP;
 610         }
 611 }
 612
 613
 614 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 615                                      struct iw_request_info *info,
 616                                      struct iw_point *erq, char *keybuf)
 617 {
 618         struct ieee80211_sub_if_data *sdata;
 619         int idx, i, alg = ALG_WEP;
 620         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 621         int remove = 0, ret;
 622
 623         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 624
 625         idx = erq->flags & IW_ENCODE_INDEX;
 626         if (idx == 0) {
 627                 if (sdata->default_key)
 628                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 629                                 if (sdata->default_key == sdata->keys[i]) {
 630                                         idx = i;
 631                                         break;
 632                                 }
 633                         }
 634         } else if (idx < 1 || idx > 4)
 635                 return -EINVAL;
 636         else
 637                 idx--;
 638
 639         if (erq->flags & IW_ENCODE_DISABLED)
 640                 remove = 1;
 641         else if (erq->length == 0) {
 642                 /* No key data - just set the default TX key index */
 643                 ieee80211_set_default_key(sdata, idx);
 644                 return 0;
 645         }
 646
 647         ret = ieee80211_set_encryption(
 648                 sdata, bcaddr,
 649                 idx, alg, remove,
 650                 !sdata->default_key,
 651                 keybuf, erq->length);
 652
 653         if (!ret) {
 654                 if (remove)
 655                         sdata->u.mgd.flags &= ~IEEE80211_STA_TKIP_WEP_USED;
 656                 else
 657                         sdata->u.mgd.flags |= IEEE80211_STA_TKIP_WEP_USED;
 658         }
 659
 660         return ret;
 661 }
 662
 663
 664 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 665                                      struct iw_request_info *info,
 666                                      struct iw_point *erq, char *key)
 667 {
 668         struct ieee80211_sub_if_data *sdata;
 669         int idx, i;
 670
 671         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 672
 673         idx = erq->flags & IW_ENCODE_INDEX;
 674         if (idx < 1 || idx > 4) {
 675                 idx = -1;
 676                 if (!sdata->default_key)
 677                         idx = 0;
 678                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 679                         if (sdata->default_key == sdata->keys[i]) {
 680                                 idx = i;
 681                                 break;
 682                         }
 683                 }
 684                 if (idx < 0)
 685                         return -EINVAL;
 686         } else
 687                 idx--;
 688
 689         erq->flags = idx + 1;
 690
 691         if (!sdata->keys[idx]) {
 692                 erq->length = 0;
 693                 erq->flags |= IW_ENCODE_DISABLED;
 694                 return 0;
 695         }
 696
 697         memcpy(key, sdata->keys[idx]->conf.key,
 698                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 699         erq->length = sdata->keys[idx]->conf.keylen;
 700         erq->flags |= IW_ENCODE_ENABLED;
 701
 702         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 703                 switch (sdata->u.mgd.auth_alg) {
 704                 case WLAN_AUTH_OPEN:
 705                 case WLAN_AUTH_LEAP:
 706                         erq->flags |= IW_ENCODE_OPEN;
 707                         break;
 708                 case WLAN_AUTH_SHARED_KEY:
 709                         erq->flags |= IW_ENCODE_RESTRICTED;
 710                         break;
 711                 }
 712         }
 713
 714         return 0;
 715 }
 716
 717 static int ieee80211_ioctl_siwpower(struct net_device *dev,
 718                                     struct iw_request_info *info,
 719                                     struct iw_param *wrq,
 720                                     char *extra)
 721 {
 722         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 723         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 724         struct ieee80211_conf *conf = &local->hw.conf;
 725         int ret = 0, timeout = 0;
 726         bool ps;
 727
 728         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
 729                 return -EOPNOTSUPP;
 730
 731         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 732                 return -EINVAL;
 733
 734         if (wrq->disabled) {
 735                 ps = false;
 736                 timeout = 0;
 737                 goto set;
 738         }
 739
 740         switch (wrq->flags & IW_POWER_MODE) {
 741         case IW_POWER_ON:       /* If not specified */
 742         case IW_POWER_MODE:     /* If set all mask */
 743         case IW_POWER_ALL_R:    /* If explicitely state all */
 744                 ps = true;
 745                 break;
 746         default:                /* Otherwise we ignore */
 747                 return -EINVAL;
 748         }
 749
 750         if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
 751                 return -EINVAL;
 752
 753         if (wrq->flags & IW_POWER_TIMEOUT)
 754                 timeout = wrq->value / 1000;
 755
 756  set:
 757         if (ps == local->powersave && timeout == conf->dynamic_ps_timeout)
 758                 return ret;
 759
 760         local->powersave = ps;
 761         conf->dynamic_ps_timeout = timeout;
 762
 763         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
 764                 ret = ieee80211_hw_config(local,
 765                                           IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT);
 766
 767         if (!(sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED))
 768                 return ret;
 769
 770         if (conf->dynamic_ps_timeout > 0 &&
 771             !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
 772                 mod_timer(&local->dynamic_ps_timer, jiffies +
 773                           msecs_to_jiffies(conf->dynamic_ps_timeout));
 774         } else {
 775                 if (local->powersave) {
 776                         if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
 777                                 ieee80211_send_nullfunc(local, sdata, 1);
 778                         conf->flags |= IEEE80211_CONF_PS;
 779                         ret = ieee80211_hw_config(local,
 780                                         IEEE80211_CONF_CHANGE_PS);
 781                 } else {
 782                         conf->flags &= ~IEEE80211_CONF_PS;
 783                         ret = ieee80211_hw_config(local,
 784                                         IEEE80211_CONF_CHANGE_PS);
 785                         if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
 786                                 ieee80211_send_nullfunc(local, sdata, 0);
 787                         del_timer_sync(&local->dynamic_ps_timer);
 788                         cancel_work_sync(&local->dynamic_ps_enable_work);
 789                 }
 790         }
 791
 792         return ret;
 793 }
 794
 795 static int ieee80211_ioctl_giwpower(struct net_device *dev,
 796                                     struct iw_request_info *info,
 797                                     union iwreq_data *wrqu,
 798                                     char *extra)
 799 {
 800         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 801
 802         wrqu->power.disabled = !local->powersave;
 803
 804         return 0;
 805 }
 806
 807 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 808                                    struct iw_request_info *info,
 809                                    struct iw_param *data, char *extra)
 810 {
 811         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 812         int ret = 0;
 813
 814         switch (data->flags & IW_AUTH_INDEX) {
 815         case IW_AUTH_WPA_VERSION:
 816         case IW_AUTH_CIPHER_GROUP:
 817         case IW_AUTH_WPA_ENABLED:
 818         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 819         case IW_AUTH_KEY_MGMT:
 820         case IW_AUTH_CIPHER_GROUP_MGMT:
 821                 break;
 822         case IW_AUTH_CIPHER_PAIRWISE:
 823                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 824                         if (data->value & (IW_AUTH_CIPHER_WEP40 |
 825                             IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_TKIP))
 826                                 sdata->u.mgd.flags |=
 827                                         IEEE80211_STA_TKIP_WEP_USED;
 828                         else
 829                                 sdata->u.mgd.flags &=
 830                                         ~IEEE80211_STA_TKIP_WEP_USED;
 831                 }
 832                 break;
 833         case IW_AUTH_DROP_UNENCRYPTED:
 834                 sdata->drop_unencrypted = !!data->value;
 835                 break;
 836         case IW_AUTH_PRIVACY_INVOKED:
 837                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
 838                         ret = -EINVAL;
 839                 else {
 840                         sdata->u.mgd.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 841                         /*
 842                          * Privacy invoked by wpa_supplicant, store the
 843                          * value and allow associating to a protected
 844                          * network without having a key up front.
 845                          */
 846                         if (data->value)
 847                                 sdata->u.mgd.flags |=
 848                                         IEEE80211_STA_PRIVACY_INVOKED;
 849                 }
 850                 break;
 851         case IW_AUTH_80211_AUTH_ALG:
 852                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
 853                         sdata->u.mgd.auth_algs = data->value;
 854                 else
 855                         ret = -EOPNOTSUPP;
 856                 break;
 857         case IW_AUTH_MFP:
 858                 if (!(sdata->local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) {
 859                         ret = -EOPNOTSUPP;
 860                         break;
 861                 }
 862                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 863                         switch (data->value) {
 864                         case IW_AUTH_MFP_DISABLED:
 865                                 sdata->u.mgd.mfp = IEEE80211_MFP_DISABLED;
 866                                 break;
 867                         case IW_AUTH_MFP_OPTIONAL:
 868                                 sdata->u.mgd.mfp = IEEE80211_MFP_OPTIONAL;
 869                                 break;
 870                         case IW_AUTH_MFP_REQUIRED:
 871                                 sdata->u.mgd.mfp = IEEE80211_MFP_REQUIRED;
 872                                 break;
 873                         default:
 874                                 ret = -EINVAL;
 875                         }
 876                 } else
 877                         ret = -EOPNOTSUPP;
 878                 break;
 879         default:
 880                 ret = -EOPNOTSUPP;
 881                 break;
 882         }
 883         return ret;
 884 }
 885
 886 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 887 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 888 {
 889         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 890         struct iw_statistics *wstats = &local->wstats;
 891         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 892         struct sta_info *sta = NULL;
 893
 894         rcu_read_lock();
 895
 896         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 897                 sta = sta_info_get(local, sdata->u.mgd.bssid);
 898
 899         if (!sta) {
 900                 wstats->discard.fragment = 0;
 901                 wstats->discard.misc = 0;
 902                 wstats->qual.qual = 0;
 903                 wstats->qual.level = 0;
 904                 wstats->qual.noise = 0;
 905                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
 906         } else {
 907                 wstats->qual.updated = 0;
 908                 /*
 909                  * mirror what cfg80211 does for iwrange/scan results,
 910                  * otherwise userspace gets confused.
 911                  */
 912                 if (local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC |
 913                                        IEEE80211_HW_SIGNAL_DBM)) {
 914                         wstats->qual.updated |= IW_QUAL_LEVEL_UPDATED;
 915                         wstats->qual.updated |= IW_QUAL_QUAL_UPDATED;
 916                 } else {
 917                         wstats->qual.updated |= IW_QUAL_LEVEL_INVALID;
 918                         wstats->qual.updated |= IW_QUAL_QUAL_INVALID;
 919                 }
 920
 921                 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
 922                         wstats->qual.level = sta->last_signal;
 923                         wstats->qual.qual = sta->last_signal;
 924                 } else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
 925                         int sig = sta->last_signal;
 926
 927                         wstats->qual.updated |= IW_QUAL_DBM;
 928                         wstats->qual.level = sig;
 929                         if (sig < -110)
 930                                 sig = -110;
 931                         else if (sig > -40)
 932                                 sig = -40;
 933                         wstats->qual.qual = sig + 110;
 934                 }
 935
 936                 if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
 937                         /*
 938                          * This assumes that if driver reports noise, it also
 939                          * reports signal in dBm.
 940                          */
 941                         wstats->qual.noise = sta->last_noise;
 942                         wstats->qual.updated |= IW_QUAL_NOISE_UPDATED;
 943                 } else {
 944                         wstats->qual.updated |= IW_QUAL_NOISE_INVALID;
 945                 }
 946         }
 947
 948         rcu_read_unlock();
 949
 950         return wstats;
 951 }
 952
 953 static int ieee80211_ioctl_giwauth(struct net_device *dev,
 954                                    struct iw_request_info *info,
 955                                    struct iw_param *data, char *extra)
 956 {
 957         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 958         int ret = 0;
 959
 960         switch (data->flags & IW_AUTH_INDEX) {
 961         case IW_AUTH_80211_AUTH_ALG:
 962                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
 963                         data->value = sdata->u.mgd.auth_algs;
 964                 else
 965                         ret = -EOPNOTSUPP;
 966                 break;
 967         default:
 968                 ret = -EOPNOTSUPP;
 969                 break;
 970         }
 971         return ret;
 972 }
 973
 974
 975 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
 976                                         struct iw_request_info *info,
 977                                         struct iw_point *erq, char *extra)
 978 {
 979         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 980         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 981         int uninitialized_var(alg), idx, i, remove = 0;
 982
 983         switch (ext->alg) {
 984         case IW_ENCODE_ALG_NONE:
 985                 remove = 1;
 986                 break;
 987         case IW_ENCODE_ALG_WEP:
 988                 alg = ALG_WEP;
 989                 break;
 990         case IW_ENCODE_ALG_TKIP:
 991                 alg = ALG_TKIP;
 992                 break;
 993         case IW_ENCODE_ALG_CCMP:
 994                 alg = ALG_CCMP;
 995                 break;
 996         case IW_ENCODE_ALG_AES_CMAC:
 997                 alg = ALG_AES_CMAC;
 998                 break;
 999         default:
1000                 return -EOPNOTSUPP;
1001         }
1002
1003         if (erq->flags & IW_ENCODE_DISABLED)
1004                 remove = 1;
1005
1006         idx = erq->flags & IW_ENCODE_INDEX;
1007         if (alg == ALG_AES_CMAC) {
1008                 if (idx < NUM_DEFAULT_KEYS + 1 ||
1009                     idx > NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
1010                         idx = -1;
1011                         if (!sdata->default_mgmt_key)
1012                                 idx = 0;
1013                         else for (i = NUM_DEFAULT_KEYS;
1014                                   i < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS;
1015                                   i++) {
1016                                 if (sdata->default_mgmt_key == sdata->keys[i])
1017                                 {
1018                                         idx = i;
1019                                         break;
1020                                 }
1021                         }
1022                         if (idx < 0)
1023                                 return -EINVAL;
1024                 } else
1025                         idx--;
1026         } else {
1027                 if (idx < 1 || idx > 4) {
1028                         idx = -1;
1029                         if (!sdata->default_key)
1030                                 idx = 0;
1031                         else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1032                                 if (sdata->default_key == sdata->keys[i]) {
1033                                         idx = i;
1034                                         break;
1035                                 }
1036                         }
1037                         if (idx < 0)
1038                                 return -EINVAL;
1039                 } else
1040                         idx--;
1041         }
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) cfg80211_wext_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) cfg80211_wext_siwscan,             /* SIOCSIWSCAN */
1080         (iw_handler) cfg80211_wext_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 };