git.oblomov.eu Git - linux-2.6/blob - 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         bool reconf = false;
 421         u32 reconf_flags = 0;
 422         int new_power_level;
 423
 424         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 425                 return -EINVAL;
 426         if (data->txpower.flags & IW_TXPOW_RANGE)
 427                 return -EINVAL;
 428         if (!chan)
 429                 return -EINVAL;
 430
 431         /* only change when not disabling */
 432         if (!data->txpower.disabled) {
 433                 if (data->txpower.fixed) {
 434                         if (data->txpower.value < 0)
 435                                 return -EINVAL;
 436                         new_power_level = data->txpower.value;
 437                         /*
 438                          * Debatable, but we cannot do a fixed power
 439                          * level above the regulatory constraint.
 440                          * Use "iwconfig wlan0 txpower 15dBm" instead.
 441                          */
 442                         if (new_power_level > chan->max_power)
 443                                 return -EINVAL;
 444                 } else {
 445                         /*
 446                          * Automatic power level setting, max being the value
 447                          * passed in from userland.
 448                          */
 449                         if (data->txpower.value < 0)
 450                                 new_power_level = -1;
 451                         else
 452                                 new_power_level = data->txpower.value;
 453                 }
 454
 455                 reconf = true;
 456
 457                 /*
 458                  * ieee80211_hw_config() will limit to the channel's
 459                  * max power and possibly power constraint from AP.
 460                  */
 461                 local->user_power_level = new_power_level;
 462         }
 463
 464         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 465                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 466                 reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
 467                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 468         }
 469
 470         if (reconf || reconf_flags)
 471                 ieee80211_hw_config(local, reconf_flags);
 472
 473         return 0;
 474 }
 475
 476 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 477                                    struct iw_request_info *info,
 478                                    union iwreq_data *data, char *extra)
 479 {
 480         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 481
 482         data->txpower.fixed = 1;
 483         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 484         data->txpower.value = local->hw.conf.power_level;
 485         data->txpower.flags = IW_TXPOW_DBM;
 486
 487         return 0;
 488 }
 489
 490 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 491                                   struct iw_request_info *info,
 492                                   struct iw_param *rts, char *extra)
 493 {
 494         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 495
 496         if (rts->disabled)
 497                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 498         else if (!rts->fixed)
 499                 /* if the rts value is not fixed, then take default */
 500                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 501         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 502                 return -EINVAL;
 503         else
 504                 local->rts_threshold = rts->value;
 505
 506         /* If the wlan card performs RTS/CTS in hardware/firmware,
 507          * configure it here */
 508
 509         if (local->ops->set_rts_threshold)
 510                 local->ops->set_rts_threshold(local_to_hw(local),
 511                                              local->rts_threshold);
 512
 513         return 0;
 514 }
 515
 516 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 517                                   struct iw_request_info *info,
 518                                   struct iw_param *rts, char *extra)
 519 {
 520         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 521
 522         rts->value = local->rts_threshold;
 523         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 524         rts->fixed = 1;
 525
 526         return 0;
 527 }
 528
 529
 530 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 531                                    struct iw_request_info *info,
 532                                    struct iw_param *frag, char *extra)
 533 {
 534         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 535
 536         if (frag->disabled)
 537                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 538         else if (!frag->fixed)
 539                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 540         else if (frag->value < 256 ||
 541                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 542                 return -EINVAL;
 543         else {
 544                 /* Fragment length must be even, so strip LSB. */
 545                 local->fragmentation_threshold = frag->value & ~0x1;
 546         }
 547
 548         return 0;
 549 }
 550
 551 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 552                                    struct iw_request_info *info,
 553                                    struct iw_param *frag, char *extra)
 554 {
 555         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 556
 557         frag->value = local->fragmentation_threshold;
 558         frag->disabled = (frag->value >= IEEE80211_MAX_FRAG_THRESHOLD);
 559         frag->fixed = 1;
 560
 561         return 0;
 562 }
 563
 564
 565 static int ieee80211_ioctl_siwretry(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         if (retry->disabled ||
 572             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 573                 return -EINVAL;
 574
 575         if (retry->flags & IW_RETRY_MAX) {
 576                 local->hw.conf.long_frame_max_tx_count = retry->value;
 577         } else if (retry->flags & IW_RETRY_MIN) {
 578                 local->hw.conf.short_frame_max_tx_count = retry->value;
 579         } else {
 580                 local->hw.conf.long_frame_max_tx_count = retry->value;
 581                 local->hw.conf.short_frame_max_tx_count = retry->value;
 582         }
 583
 584         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
 585
 586         return 0;
 587 }
 588
 589
 590 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 591                                     struct iw_request_info *info,
 592                                     struct iw_param *retry, char *extra)
 593 {
 594         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 595
 596         retry->disabled = 0;
 597         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 598                 /* first return min value, iwconfig will ask max value
 599                  * later if needed */
 600                 retry->flags |= IW_RETRY_LIMIT;
 601                 retry->value = local->hw.conf.short_frame_max_tx_count;
 602                 if (local->hw.conf.long_frame_max_tx_count !=
 603                     local->hw.conf.short_frame_max_tx_count)
 604                         retry->flags |= IW_RETRY_MIN;
 605                 return 0;
 606         }
 607         if (retry->flags & IW_RETRY_MAX) {
 608                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 609                 retry->value = local->hw.conf.long_frame_max_tx_count;
 610         }
 611
 612         return 0;
 613 }
 614
 615
 616 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 617                                      struct iw_request_info *info,
 618                                      struct iw_point *erq, char *keybuf)
 619 {
 620         struct ieee80211_sub_if_data *sdata;
 621         int idx, i, alg = ALG_WEP;
 622         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 623         int remove = 0, ret;
 624
 625         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 626
 627         idx = erq->flags & IW_ENCODE_INDEX;
 628         if (idx == 0) {
 629                 if (sdata->default_key)
 630                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 631                                 if (sdata->default_key == sdata->keys[i]) {
 632                                         idx = i;
 633                                         break;
 634                                 }
 635                         }
 636         } else if (idx < 1 || idx > 4)
 637                 return -EINVAL;
 638         else
 639                 idx--;
 640
 641         if (erq->flags & IW_ENCODE_DISABLED)
 642                 remove = 1;
 643         else if (erq->length == 0) {
 644                 /* No key data - just set the default TX key index */
 645                 ieee80211_set_default_key(sdata, idx);
 646                 return 0;
 647         }
 648
 649         ret = ieee80211_set_encryption(
 650                 sdata, bcaddr,
 651                 idx, alg, remove,
 652                 !sdata->default_key,
 653                 keybuf, erq->length);
 654
 655         if (!ret && sdata->vif.type == NL80211_IFTYPE_STATION) {
 656                 if (remove)
 657                         sdata->u.mgd.flags &= ~IEEE80211_STA_TKIP_WEP_USED;
 658                 else
 659                         sdata->u.mgd.flags |= IEEE80211_STA_TKIP_WEP_USED;
 660         }
 661
 662         return ret;
 663 }
 664
 665
 666 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 667                                      struct iw_request_info *info,
 668                                      struct iw_point *erq, char *key)
 669 {
 670         struct ieee80211_sub_if_data *sdata;
 671         int idx, i;
 672
 673         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 674
 675         idx = erq->flags & IW_ENCODE_INDEX;
 676         if (idx < 1 || idx > 4) {
 677                 idx = -1;
 678                 if (!sdata->default_key)
 679                         idx = 0;
 680                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 681                         if (sdata->default_key == sdata->keys[i]) {
 682                                 idx = i;
 683                                 break;
 684                         }
 685                 }
 686                 if (idx < 0)
 687                         return -EINVAL;
 688         } else
 689                 idx--;
 690
 691         erq->flags = idx + 1;
 692
 693         if (!sdata->keys[idx]) {
 694                 erq->length = 0;
 695                 erq->flags |= IW_ENCODE_DISABLED;
 696                 return 0;
 697         }
 698
 699         memcpy(key, sdata->keys[idx]->conf.key,
 700                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 701         erq->length = sdata->keys[idx]->conf.keylen;
 702         erq->flags |= IW_ENCODE_ENABLED;
 703
 704         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 705                 switch (sdata->u.mgd.auth_alg) {
 706                 case WLAN_AUTH_OPEN:
 707                 case WLAN_AUTH_LEAP:
 708                         erq->flags |= IW_ENCODE_OPEN;
 709                         break;
 710                 case WLAN_AUTH_SHARED_KEY:
 711                         erq->flags |= IW_ENCODE_RESTRICTED;
 712                         break;
 713                 }
 714         }
 715
 716         return 0;
 717 }
 718
 719 static int ieee80211_ioctl_siwpower(struct net_device *dev,
 720                                     struct iw_request_info *info,
 721                                     struct iw_param *wrq,
 722                                     char *extra)
 723 {
 724         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 725         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 726         struct ieee80211_conf *conf = &local->hw.conf;
 727         int timeout = 0;
 728         bool ps;
 729
 730         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
 731                 return -EOPNOTSUPP;
 732
 733         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 734                 return -EINVAL;
 735
 736         if (wrq->disabled) {
 737                 ps = false;
 738                 timeout = 0;
 739                 goto set;
 740         }
 741
 742         switch (wrq->flags & IW_POWER_MODE) {
 743         case IW_POWER_ON:       /* If not specified */
 744         case IW_POWER_MODE:     /* If set all mask */
 745         case IW_POWER_ALL_R:    /* If explicitely state all */
 746                 ps = true;
 747                 break;
 748         default:                /* Otherwise we ignore */
 749                 return -EINVAL;
 750         }
 751
 752         if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
 753                 return -EINVAL;
 754
 755         if (wrq->flags & IW_POWER_TIMEOUT)
 756                 timeout = wrq->value / 1000;
 757
 758  set:
 759         if (ps == sdata->u.mgd.powersave && timeout == conf->dynamic_ps_timeout)
 760                 return 0;
 761
 762         sdata->u.mgd.powersave = ps;
 763         conf->dynamic_ps_timeout = timeout;
 764
 765         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
 766                 ieee80211_hw_config(local,
 767                                     IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT);
 768
 769         ieee80211_recalc_ps(local, -1);
 770
 771         return 0;
 772 }
 773
 774 static int ieee80211_ioctl_giwpower(struct net_device *dev,
 775                                     struct iw_request_info *info,
 776                                     union iwreq_data *wrqu,
 777                                     char *extra)
 778 {
 779         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 780
 781         wrqu->power.disabled = !sdata->u.mgd.powersave;
 782
 783         return 0;
 784 }
 785
 786 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 787                                    struct iw_request_info *info,
 788                                    struct iw_param *data, char *extra)
 789 {
 790         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 791         int ret = 0;
 792
 793         switch (data->flags & IW_AUTH_INDEX) {
 794         case IW_AUTH_WPA_VERSION:
 795         case IW_AUTH_CIPHER_GROUP:
 796         case IW_AUTH_WPA_ENABLED:
 797         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 798         case IW_AUTH_KEY_MGMT:
 799         case IW_AUTH_CIPHER_GROUP_MGMT:
 800                 break;
 801         case IW_AUTH_CIPHER_PAIRWISE:
 802                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 803                         if (data->value & (IW_AUTH_CIPHER_WEP40 |
 804                             IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_TKIP))
 805                                 sdata->u.mgd.flags |=
 806                                         IEEE80211_STA_TKIP_WEP_USED;
 807                         else
 808                                 sdata->u.mgd.flags &=
 809                                         ~IEEE80211_STA_TKIP_WEP_USED;
 810                 }
 811                 break;
 812         case IW_AUTH_DROP_UNENCRYPTED:
 813                 sdata->drop_unencrypted = !!data->value;
 814                 break;
 815         case IW_AUTH_PRIVACY_INVOKED:
 816                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
 817                         ret = -EINVAL;
 818                 else {
 819                         sdata->u.mgd.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 820                         /*
 821                          * Privacy invoked by wpa_supplicant, store the
 822                          * value and allow associating to a protected
 823                          * network without having a key up front.
 824                          */
 825                         if (data->value)
 826                                 sdata->u.mgd.flags |=
 827                                         IEEE80211_STA_PRIVACY_INVOKED;
 828                 }
 829                 break;
 830         case IW_AUTH_80211_AUTH_ALG:
 831                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
 832                         sdata->u.mgd.auth_algs = data->value;
 833                 else
 834                         ret = -EOPNOTSUPP;
 835                 break;
 836         case IW_AUTH_MFP:
 837                 if (!(sdata->local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) {
 838                         ret = -EOPNOTSUPP;
 839                         break;
 840                 }
 841                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 842                         switch (data->value) {
 843                         case IW_AUTH_MFP_DISABLED:
 844                                 sdata->u.mgd.mfp = IEEE80211_MFP_DISABLED;
 845                                 break;
 846                         case IW_AUTH_MFP_OPTIONAL:
 847                                 sdata->u.mgd.mfp = IEEE80211_MFP_OPTIONAL;
 848                                 break;
 849                         case IW_AUTH_MFP_REQUIRED:
 850                                 sdata->u.mgd.mfp = IEEE80211_MFP_REQUIRED;
 851                                 break;
 852                         default:
 853                                 ret = -EINVAL;
 854                         }
 855                 } else
 856                         ret = -EOPNOTSUPP;
 857                 break;
 858         default:
 859                 ret = -EOPNOTSUPP;
 860                 break;
 861         }
 862         return ret;
 863 }
 864
 865 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 866 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 867 {
 868         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 869         struct iw_statistics *wstats = &local->wstats;
 870         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 871         struct sta_info *sta = NULL;
 872
 873         rcu_read_lock();
 874
 875         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 876                 sta = sta_info_get(local, sdata->u.mgd.bssid);
 877
 878         if (!sta) {
 879                 wstats->discard.fragment = 0;
 880                 wstats->discard.misc = 0;
 881                 wstats->qual.qual = 0;
 882                 wstats->qual.level = 0;
 883                 wstats->qual.noise = 0;
 884                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
 885         } else {
 886                 wstats->qual.updated = 0;
 887                 /*
 888                  * mirror what cfg80211 does for iwrange/scan results,
 889                  * otherwise userspace gets confused.
 890                  */
 891                 if (local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC |
 892                                        IEEE80211_HW_SIGNAL_DBM)) {
 893                         wstats->qual.updated |= IW_QUAL_LEVEL_UPDATED;
 894                         wstats->qual.updated |= IW_QUAL_QUAL_UPDATED;
 895                 } else {
 896                         wstats->qual.updated |= IW_QUAL_LEVEL_INVALID;
 897                         wstats->qual.updated |= IW_QUAL_QUAL_INVALID;
 898                 }
 899
 900                 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
 901                         wstats->qual.level = sta->last_signal;
 902                         wstats->qual.qual = sta->last_signal;
 903                 } else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
 904                         int sig = sta->last_signal;
 905
 906                         wstats->qual.updated |= IW_QUAL_DBM;
 907                         wstats->qual.level = sig;
 908                         if (sig < -110)
 909                                 sig = -110;
 910                         else if (sig > -40)
 911                                 sig = -40;
 912                         wstats->qual.qual = sig + 110;
 913                 }
 914
 915                 if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
 916                         /*
 917                          * This assumes that if driver reports noise, it also
 918                          * reports signal in dBm.
 919                          */
 920                         wstats->qual.noise = sta->last_noise;
 921                         wstats->qual.updated |= IW_QUAL_NOISE_UPDATED;
 922                 } else {
 923                         wstats->qual.updated |= IW_QUAL_NOISE_INVALID;
 924                 }
 925         }
 926
 927         rcu_read_unlock();
 928
 929         return wstats;
 930 }
 931
 932 static int ieee80211_ioctl_giwauth(struct net_device *dev,
 933                                    struct iw_request_info *info,
 934                                    struct iw_param *data, char *extra)
 935 {
 936         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 937         int ret = 0;
 938
 939         switch (data->flags & IW_AUTH_INDEX) {
 940         case IW_AUTH_80211_AUTH_ALG:
 941                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
 942                         data->value = sdata->u.mgd.auth_algs;
 943                 else
 944                         ret = -EOPNOTSUPP;
 945                 break;
 946         default:
 947                 ret = -EOPNOTSUPP;
 948                 break;
 949         }
 950         return ret;
 951 }
 952
 953
 954 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
 955                                         struct iw_request_info *info,
 956                                         struct iw_point *erq, char *extra)
 957 {
 958         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 959         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 960         int uninitialized_var(alg), idx, i, remove = 0;
 961
 962         switch (ext->alg) {
 963         case IW_ENCODE_ALG_NONE:
 964                 remove = 1;
 965                 break;
 966         case IW_ENCODE_ALG_WEP:
 967                 alg = ALG_WEP;
 968                 break;
 969         case IW_ENCODE_ALG_TKIP:
 970                 alg = ALG_TKIP;
 971                 break;
 972         case IW_ENCODE_ALG_CCMP:
 973                 alg = ALG_CCMP;
 974                 break;
 975         case IW_ENCODE_ALG_AES_CMAC:
 976                 alg = ALG_AES_CMAC;
 977                 break;
 978         default:
 979                 return -EOPNOTSUPP;
 980         }
 981
 982         if (erq->flags & IW_ENCODE_DISABLED)
 983                 remove = 1;
 984
 985         idx = erq->flags & IW_ENCODE_INDEX;
 986         if (alg == ALG_AES_CMAC) {
 987                 if (idx < NUM_DEFAULT_KEYS + 1 ||
 988                     idx > NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
 989                         idx = -1;
 990                         if (!sdata->default_mgmt_key)
 991                                 idx = 0;
 992                         else for (i = NUM_DEFAULT_KEYS;
 993                                   i < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS;
 994                                   i++) {
 995                                 if (sdata->default_mgmt_key == sdata->keys[i])
 996                                 {
 997                                         idx = i;
 998                                         break;
 999                                 }
1000                         }
1001                         if (idx < 0)
1002                                 return -EINVAL;
1003                 } else
1004                         idx--;
1005         } else {
1006                 if (idx < 1 || idx > 4) {
1007                         idx = -1;
1008                         if (!sdata->default_key)
1009                                 idx = 0;
1010                         else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1011                                 if (sdata->default_key == sdata->keys[i]) {
1012                                         idx = i;
1013                                         break;
1014                                 }
1015                         }
1016                         if (idx < 0)
1017                                 return -EINVAL;
1018                 } else
1019                         idx--;
1020         }
1021
1022         return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg,
1023                                         remove,
1024                                         ext->ext_flags &
1025                                         IW_ENCODE_EXT_SET_TX_KEY,
1026                                         ext->key, ext->key_len);
1027 }
1028
1029
1030 /* Structures to export the Wireless Handlers */
1031
1032 static const iw_handler ieee80211_handler[] =
1033 {
1034         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1035         (iw_handler) cfg80211_wext_giwname,             /* SIOCGIWNAME */
1036         (iw_handler) NULL,                              /* SIOCSIWNWID */
1037         (iw_handler) NULL,                              /* SIOCGIWNWID */
1038         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1039         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1040         (iw_handler) cfg80211_wext_siwmode,             /* SIOCSIWMODE */
1041         (iw_handler) cfg80211_wext_giwmode,             /* SIOCGIWMODE */
1042         (iw_handler) NULL,                              /* SIOCSIWSENS */
1043         (iw_handler) NULL,                              /* SIOCGIWSENS */
1044         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1045         (iw_handler) cfg80211_wext_giwrange,            /* SIOCGIWRANGE */
1046         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1047         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1048         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1049         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1050         (iw_handler) NULL,                              /* SIOCSIWSPY */
1051         (iw_handler) NULL,                              /* SIOCGIWSPY */
1052         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1053         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1054         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1055         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1056         (iw_handler) cfg80211_wext_siwmlme,             /* SIOCSIWMLME */
1057         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1058         (iw_handler) cfg80211_wext_siwscan,             /* SIOCSIWSCAN */
1059         (iw_handler) cfg80211_wext_giwscan,             /* SIOCGIWSCAN */
1060         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1061         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1062         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1063         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1064         (iw_handler) NULL,                              /* -- hole -- */
1065         (iw_handler) NULL,                              /* -- hole -- */
1066         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1067         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1068         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1069         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1070         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1071         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1072         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1073         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1074         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1075         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1076         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1077         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1078         (iw_handler) ieee80211_ioctl_siwpower,          /* SIOCSIWPOWER */
1079         (iw_handler) ieee80211_ioctl_giwpower,          /* SIOCGIWPOWER */
1080         (iw_handler) NULL,                              /* -- hole -- */
1081         (iw_handler) NULL,                              /* -- hole -- */
1082         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1083         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1084         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1085         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1086         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1087         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1088         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1089         (iw_handler) NULL,                              /* -- hole -- */
1090 };
1091
1092 const struct iw_handler_def ieee80211_iw_handler_def =
1093 {
1094         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1095         .standard       = (iw_handler *) ieee80211_handler,
1096         .get_wireless_stats = ieee80211_get_wireless_stats,
1097 };