net/mac80211/ieee80211_ioctl.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 "ieee80211_rate.h"
  25 #include "wpa.h"
  26 #include "aes_ccm.h"
  27
  28
  29 static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
  30                                     int idx, int alg, int set_tx_key,
  31                                     const u8 *_key, size_t key_len)
  32 {
  33         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
  34         int ret = 0;
  35         struct sta_info *sta;
  36         struct ieee80211_key *key;
  37         struct ieee80211_sub_if_data *sdata;
  38
  39         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  40
  41         if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
  42                 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
  43                        dev->name, idx);
  44                 return -EINVAL;
  45         }
  46
  47         if (is_broadcast_ether_addr(sta_addr)) {
  48                 sta = NULL;
  49                 key = sdata->keys[idx];
  50         } else {
  51                 set_tx_key = 0;
  52                 /*
  53                  * According to the standard, the key index of a pairwise
  54                  * key must be zero. However, some AP are broken when it
  55                  * comes to WEP key indices, so we work around this.
  56                  */
  57                 if (idx != 0 && alg != ALG_WEP) {
  58                         printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for "
  59                                "individual key\n", dev->name);
  60                         return -EINVAL;
  61                 }
  62
  63                 sta = sta_info_get(local, sta_addr);
  64                 if (!sta) {
  65 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
  66                         DECLARE_MAC_BUF(mac);
  67                         printk(KERN_DEBUG "%s: set_encrypt - unknown addr "
  68                                "%s\n",
  69                                dev->name, print_mac(mac, sta_addr));
  70 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
  71
  72                         return -ENOENT;
  73                 }
  74
  75                 key = sta->key;
  76         }
  77
  78         if (alg == ALG_NONE) {
  79                 ieee80211_key_free(key);
  80                 key = NULL;
  81         } else {
  82                 /*
  83                  * Automatically frees any old key if present.
  84                  */
  85                 key = ieee80211_key_alloc(sdata, sta, alg, idx, key_len, _key);
  86                 if (!key) {
  87                         ret = -ENOMEM;
  88                         goto err_out;
  89                 }
  90         }
  91
  92         if (set_tx_key || (!sta && !sdata->default_key && key))
  93                 ieee80211_set_default_key(sdata, idx);
  94
  95         ret = 0;
  96  err_out:
  97         if (sta)
  98                 sta_info_put(sta);
  99         return ret;
 100 }
 101
 102 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
 103                                     struct iw_request_info *info,
 104                                     struct iw_point *data, char *extra)
 105 {
 106         struct ieee80211_sub_if_data *sdata;
 107         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 108
 109         if (local->user_space_mlme)
 110                 return -EOPNOTSUPP;
 111
 112         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 113         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 114             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 115                 int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
 116                 if (ret)
 117                         return ret;
 118                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 119                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 120                 return 0;
 121         }
 122
 123         return -EOPNOTSUPP;
 124 }
 125
 126 static int ieee80211_ioctl_giwname(struct net_device *dev,
 127                                    struct iw_request_info *info,
 128                                    char *name, char *extra)
 129 {
 130         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 131
 132         switch (local->hw.conf.phymode) {
 133         case MODE_IEEE80211A:
 134                 strcpy(name, "IEEE 802.11a");
 135                 break;
 136         case MODE_IEEE80211B:
 137                 strcpy(name, "IEEE 802.11b");
 138                 break;
 139         case MODE_IEEE80211G:
 140                 strcpy(name, "IEEE 802.11g");
 141                 break;
 142         default:
 143                 strcpy(name, "IEEE 802.11");
 144                 break;
 145         }
 146
 147         return 0;
 148 }
 149
 150
 151 static int ieee80211_ioctl_giwrange(struct net_device *dev,
 152                                  struct iw_request_info *info,
 153                                  struct iw_point *data, char *extra)
 154 {
 155         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 156         struct iw_range *range = (struct iw_range *) extra;
 157         struct ieee80211_hw_mode *mode = NULL;
 158         int c = 0;
 159
 160         data->length = sizeof(struct iw_range);
 161         memset(range, 0, sizeof(struct iw_range));
 162
 163         range->we_version_compiled = WIRELESS_EXT;
 164         range->we_version_source = 21;
 165         range->retry_capa = IW_RETRY_LIMIT;
 166         range->retry_flags = IW_RETRY_LIMIT;
 167         range->min_retry = 0;
 168         range->max_retry = 255;
 169         range->min_rts = 0;
 170         range->max_rts = 2347;
 171         range->min_frag = 256;
 172         range->max_frag = 2346;
 173
 174         range->encoding_size[0] = 5;
 175         range->encoding_size[1] = 13;
 176         range->num_encoding_sizes = 2;
 177         range->max_encoding_tokens = NUM_DEFAULT_KEYS;
 178
 179         range->max_qual.qual = local->hw.max_signal;
 180         range->max_qual.level = local->hw.max_rssi;
 181         range->max_qual.noise = local->hw.max_noise;
 182         range->max_qual.updated = local->wstats_flags;
 183
 184         range->avg_qual.qual = local->hw.max_signal/2;
 185         range->avg_qual.level = 0;
 186         range->avg_qual.noise = 0;
 187         range->avg_qual.updated = local->wstats_flags;
 188
 189         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
 190                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 191
 192         list_for_each_entry(mode, &local->modes_list, list) {
 193                 int i = 0;
 194
 195                 if (!(local->enabled_modes & (1 << mode->mode)) ||
 196                     (local->hw_modes & local->enabled_modes &
 197                      (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
 198                         continue;
 199
 200                 while (i < mode->num_channels && c < IW_MAX_FREQUENCIES) {
 201                         struct ieee80211_channel *chan = &mode->channels[i];
 202
 203                         if (chan->flag & IEEE80211_CHAN_W_SCAN) {
 204                                 range->freq[c].i = chan->chan;
 205                                 range->freq[c].m = chan->freq * 100000;
 206                                 range->freq[c].e = 1;
 207                                 c++;
 208                         }
 209                         i++;
 210                 }
 211         }
 212         range->num_channels = c;
 213         range->num_frequency = c;
 214
 215         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 216         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
 217         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 218         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 219
 220         return 0;
 221 }
 222
 223
 224 static int ieee80211_ioctl_siwmode(struct net_device *dev,
 225                                    struct iw_request_info *info,
 226                                    __u32 *mode, char *extra)
 227 {
 228         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 229         int type;
 230
 231         if (sdata->type == IEEE80211_IF_TYPE_VLAN)
 232                 return -EOPNOTSUPP;
 233
 234         switch (*mode) {
 235         case IW_MODE_INFRA:
 236                 type = IEEE80211_IF_TYPE_STA;
 237                 break;
 238         case IW_MODE_ADHOC:
 239                 type = IEEE80211_IF_TYPE_IBSS;
 240                 break;
 241         case IW_MODE_MONITOR:
 242                 type = IEEE80211_IF_TYPE_MNTR;
 243                 break;
 244         default:
 245                 return -EINVAL;
 246         }
 247
 248         if (type == sdata->type)
 249                 return 0;
 250         if (netif_running(dev))
 251                 return -EBUSY;
 252
 253         ieee80211_if_reinit(dev);
 254         ieee80211_if_set_type(dev, type);
 255
 256         return 0;
 257 }
 258
 259
 260 static int ieee80211_ioctl_giwmode(struct net_device *dev,
 261                                    struct iw_request_info *info,
 262                                    __u32 *mode, char *extra)
 263 {
 264         struct ieee80211_sub_if_data *sdata;
 265
 266         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 267         switch (sdata->type) {
 268         case IEEE80211_IF_TYPE_AP:
 269                 *mode = IW_MODE_MASTER;
 270                 break;
 271         case IEEE80211_IF_TYPE_STA:
 272                 *mode = IW_MODE_INFRA;
 273                 break;
 274         case IEEE80211_IF_TYPE_IBSS:
 275                 *mode = IW_MODE_ADHOC;
 276                 break;
 277         case IEEE80211_IF_TYPE_MNTR:
 278                 *mode = IW_MODE_MONITOR;
 279                 break;
 280         case IEEE80211_IF_TYPE_WDS:
 281                 *mode = IW_MODE_REPEAT;
 282                 break;
 283         case IEEE80211_IF_TYPE_VLAN:
 284                 *mode = IW_MODE_SECOND;         /* FIXME */
 285                 break;
 286         default:
 287                 *mode = IW_MODE_AUTO;
 288                 break;
 289         }
 290         return 0;
 291 }
 292
 293 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq)
 294 {
 295         struct ieee80211_hw_mode *mode;
 296         int c, set = 0;
 297         int ret = -EINVAL;
 298
 299         list_for_each_entry(mode, &local->modes_list, list) {
 300                 if (!(local->enabled_modes & (1 << mode->mode)))
 301                         continue;
 302                 for (c = 0; c < mode->num_channels; c++) {
 303                         struct ieee80211_channel *chan = &mode->channels[c];
 304                         if (chan->flag & IEEE80211_CHAN_W_SCAN &&
 305                             ((chan->chan == channel) || (chan->freq == freq))) {
 306                                 local->oper_channel = chan;
 307                                 local->oper_hw_mode = mode;
 308                                 set++;
 309                         }
 310                 }
 311         }
 312
 313         if (set) {
 314                 if (local->sta_scanning)
 315                         ret = 0;
 316                 else
 317                         ret = ieee80211_hw_config(local);
 318
 319                 rate_control_clear(local);
 320         }
 321
 322         return ret;
 323 }
 324
 325 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
 326                                    struct iw_request_info *info,
 327                                    struct iw_freq *freq, char *extra)
 328 {
 329         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 330         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 331
 332         if (sdata->type == IEEE80211_IF_TYPE_STA)
 333                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 334
 335         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 336         if (freq->e == 0) {
 337                 if (freq->m < 0) {
 338                         if (sdata->type == IEEE80211_IF_TYPE_STA)
 339                                 sdata->u.sta.flags |=
 340                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
 341                         return 0;
 342                 } else
 343                         return ieee80211_set_channel(local, freq->m, -1);
 344         } else {
 345                 int i, div = 1000000;
 346                 for (i = 0; i < freq->e; i++)
 347                         div /= 10;
 348                 if (div > 0)
 349                         return ieee80211_set_channel(local, -1, freq->m / div);
 350                 else
 351                         return -EINVAL;
 352         }
 353 }
 354
 355
 356 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
 357                                    struct iw_request_info *info,
 358                                    struct iw_freq *freq, char *extra)
 359 {
 360         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 361
 362         /* TODO: in station mode (Managed/Ad-hoc) might need to poll low-level
 363          * driver for the current channel with firmware-based management */
 364
 365         freq->m = local->hw.conf.freq;
 366         freq->e = 6;
 367
 368         return 0;
 369 }
 370
 371
 372 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 373                                     struct iw_request_info *info,
 374                                     struct iw_point *data, char *ssid)
 375 {
 376         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 377         struct ieee80211_sub_if_data *sdata;
 378         size_t len = data->length;
 379
 380         /* iwconfig uses nul termination in SSID.. */
 381         if (len > 0 && ssid[len - 1] == '\0')
 382                 len--;
 383
 384         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 385         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 386             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 387                 int ret;
 388                 if (local->user_space_mlme) {
 389                         if (len > IEEE80211_MAX_SSID_LEN)
 390                                 return -EINVAL;
 391                         memcpy(sdata->u.sta.ssid, ssid, len);
 392                         sdata->u.sta.ssid_len = len;
 393                         return 0;
 394                 }
 395                 if (data->flags)
 396                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 397                 else
 398                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 399                 ret = ieee80211_sta_set_ssid(dev, ssid, len);
 400                 if (ret)
 401                         return ret;
 402                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 403                 return 0;
 404         }
 405
 406         if (sdata->type == IEEE80211_IF_TYPE_AP) {
 407                 memcpy(sdata->u.ap.ssid, ssid, len);
 408                 memset(sdata->u.ap.ssid + len, 0,
 409                        IEEE80211_MAX_SSID_LEN - len);
 410                 sdata->u.ap.ssid_len = len;
 411                 return ieee80211_if_config(dev);
 412         }
 413         return -EOPNOTSUPP;
 414 }
 415
 416
 417 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 418                                     struct iw_request_info *info,
 419                                     struct iw_point *data, char *ssid)
 420 {
 421         size_t len;
 422
 423         struct ieee80211_sub_if_data *sdata;
 424         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 425         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 426             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 427                 int res = ieee80211_sta_get_ssid(dev, ssid, &len);
 428                 if (res == 0) {
 429                         data->length = len;
 430                         data->flags = 1;
 431                 } else
 432                         data->flags = 0;
 433                 return res;
 434         }
 435
 436         if (sdata->type == IEEE80211_IF_TYPE_AP) {
 437                 len = sdata->u.ap.ssid_len;
 438                 if (len > IW_ESSID_MAX_SIZE)
 439                         len = IW_ESSID_MAX_SIZE;
 440                 memcpy(ssid, sdata->u.ap.ssid, len);
 441                 data->length = len;
 442                 data->flags = 1;
 443                 return 0;
 444         }
 445         return -EOPNOTSUPP;
 446 }
 447
 448
 449 static int ieee80211_ioctl_siwap(struct net_device *dev,
 450                                  struct iw_request_info *info,
 451                                  struct sockaddr *ap_addr, char *extra)
 452 {
 453         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 454         struct ieee80211_sub_if_data *sdata;
 455
 456         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 457         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 458             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 459                 int ret;
 460                 if (local->user_space_mlme) {
 461                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
 462                                ETH_ALEN);
 463                         return 0;
 464                 }
 465                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 466                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 467                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 468                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 469                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 470                 else
 471                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 472                 ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
 473                 if (ret)
 474                         return ret;
 475                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 476                 return 0;
 477         } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
 478                 if (memcmp(sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 479                            ETH_ALEN) == 0)
 480                         return 0;
 481                 return ieee80211_if_update_wds(dev, (u8 *) &ap_addr->sa_data);
 482         }
 483
 484         return -EOPNOTSUPP;
 485 }
 486
 487
 488 static int ieee80211_ioctl_giwap(struct net_device *dev,
 489                                  struct iw_request_info *info,
 490                                  struct sockaddr *ap_addr, char *extra)
 491 {
 492         struct ieee80211_sub_if_data *sdata;
 493
 494         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 495         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 496             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 497                 ap_addr->sa_family = ARPHRD_ETHER;
 498                 memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
 499                 return 0;
 500         } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
 501                 ap_addr->sa_family = ARPHRD_ETHER;
 502                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 503                 return 0;
 504         }
 505
 506         return -EOPNOTSUPP;
 507 }
 508
 509
 510 static int ieee80211_ioctl_siwscan(struct net_device *dev,
 511                                    struct iw_request_info *info,
 512                                    struct iw_point *data, char *extra)
 513 {
 514         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 515         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 516         u8 *ssid = NULL;
 517         size_t ssid_len = 0;
 518
 519         if (!netif_running(dev))
 520                 return -ENETDOWN;
 521
 522         switch (sdata->type) {
 523         case IEEE80211_IF_TYPE_STA:
 524         case IEEE80211_IF_TYPE_IBSS:
 525                 if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID) {
 526                         ssid = sdata->u.sta.ssid;
 527                         ssid_len = sdata->u.sta.ssid_len;
 528                 }
 529                 break;
 530         case IEEE80211_IF_TYPE_AP:
 531                 if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID) {
 532                         ssid = sdata->u.ap.ssid;
 533                         ssid_len = sdata->u.ap.ssid_len;
 534                 }
 535                 break;
 536         default:
 537                 return -EOPNOTSUPP;
 538         }
 539
 540         return ieee80211_sta_req_scan(dev, ssid, ssid_len);
 541 }
 542
 543
 544 static int ieee80211_ioctl_giwscan(struct net_device *dev,
 545                                    struct iw_request_info *info,
 546                                    struct iw_point *data, char *extra)
 547 {
 548         int res;
 549         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 550         if (local->sta_scanning)
 551                 return -EAGAIN;
 552         res = ieee80211_sta_scan_results(dev, extra, data->length);
 553         if (res >= 0) {
 554                 data->length = res;
 555                 return 0;
 556         }
 557         data->length = 0;
 558         return res;
 559 }
 560
 561
 562 static int ieee80211_ioctl_siwrate(struct net_device *dev,
 563                                   struct iw_request_info *info,
 564                                   struct iw_param *rate, char *extra)
 565 {
 566         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 567         struct ieee80211_hw_mode *mode;
 568         int i;
 569         u32 target_rate = rate->value / 100000;
 570         struct ieee80211_sub_if_data *sdata;
 571
 572         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 573         if (!sdata->bss)
 574                 return -ENODEV;
 575         mode = local->oper_hw_mode;
 576         /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
 577          * target_rate = X, rate->fixed = 1 means only rate X
 578          * target_rate = X, rate->fixed = 0 means all rates <= X */
 579         sdata->bss->max_ratectrl_rateidx = -1;
 580         sdata->bss->force_unicast_rateidx = -1;
 581         if (rate->value < 0)
 582                 return 0;
 583         for (i=0; i< mode->num_rates; i++) {
 584                 struct ieee80211_rate *rates = &mode->rates[i];
 585                 int this_rate = rates->rate;
 586
 587                 if (target_rate == this_rate) {
 588                         sdata->bss->max_ratectrl_rateidx = i;
 589                         if (rate->fixed)
 590                                 sdata->bss->force_unicast_rateidx = i;
 591                         break;
 592                 }
 593         }
 594         return 0;
 595 }
 596
 597 static int ieee80211_ioctl_giwrate(struct net_device *dev,
 598                                   struct iw_request_info *info,
 599                                   struct iw_param *rate, char *extra)
 600 {
 601         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 602         struct sta_info *sta;
 603         struct ieee80211_sub_if_data *sdata;
 604
 605         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 606         if (sdata->type == IEEE80211_IF_TYPE_STA)
 607                 sta = sta_info_get(local, sdata->u.sta.bssid);
 608         else
 609                 return -EOPNOTSUPP;
 610         if (!sta)
 611                 return -ENODEV;
 612         if (sta->txrate < local->oper_hw_mode->num_rates)
 613                 rate->value = local->oper_hw_mode->rates[sta->txrate].rate * 100000;
 614         else
 615                 rate->value = 0;
 616         sta_info_put(sta);
 617         return 0;
 618 }
 619
 620 static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
 621                                       struct iw_request_info *info,
 622                                       union iwreq_data *data, char *extra)
 623 {
 624         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 625         bool need_reconfig = 0;
 626
 627         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 628                 return -EINVAL;
 629         if (data->txpower.flags & IW_TXPOW_RANGE)
 630                 return -EINVAL;
 631         if (!data->txpower.fixed)
 632                 return -EINVAL;
 633
 634         if (local->hw.conf.power_level != data->txpower.value) {
 635                 local->hw.conf.power_level = data->txpower.value;
 636                 need_reconfig = 1;
 637         }
 638         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 639                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 640                 need_reconfig = 1;
 641         }
 642         if (need_reconfig) {
 643                 ieee80211_hw_config(local);
 644                 /* The return value of hw_config is not of big interest here,
 645                  * as it doesn't say that it failed because of _this_ config
 646                  * change or something else. Ignore it. */
 647         }
 648
 649         return 0;
 650 }
 651
 652 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 653                                    struct iw_request_info *info,
 654                                    union iwreq_data *data, char *extra)
 655 {
 656         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 657
 658         data->txpower.fixed = 1;
 659         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 660         data->txpower.value = local->hw.conf.power_level;
 661         data->txpower.flags = IW_TXPOW_DBM;
 662
 663         return 0;
 664 }
 665
 666 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 667                                   struct iw_request_info *info,
 668                                   struct iw_param *rts, char *extra)
 669 {
 670         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 671
 672         if (rts->disabled)
 673                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 674         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 675                 return -EINVAL;
 676         else
 677                 local->rts_threshold = rts->value;
 678
 679         /* If the wlan card performs RTS/CTS in hardware/firmware,
 680          * configure it here */
 681
 682         if (local->ops->set_rts_threshold)
 683                 local->ops->set_rts_threshold(local_to_hw(local),
 684                                              local->rts_threshold);
 685
 686         return 0;
 687 }
 688
 689 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 690                                   struct iw_request_info *info,
 691                                   struct iw_param *rts, char *extra)
 692 {
 693         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 694
 695         rts->value = local->rts_threshold;
 696         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 697         rts->fixed = 1;
 698
 699         return 0;
 700 }
 701
 702
 703 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 704                                    struct iw_request_info *info,
 705                                    struct iw_param *frag, char *extra)
 706 {
 707         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 708
 709         if (frag->disabled)
 710                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 711         else if (frag->value < 256 ||
 712                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 713                 return -EINVAL;
 714         else {
 715                 /* Fragment length must be even, so strip LSB. */
 716                 local->fragmentation_threshold = frag->value & ~0x1;
 717         }
 718
 719         /* If the wlan card performs fragmentation in hardware/firmware,
 720          * configure it here */
 721
 722         if (local->ops->set_frag_threshold)
 723                 local->ops->set_frag_threshold(
 724                         local_to_hw(local),
 725                         local->fragmentation_threshold);
 726
 727         return 0;
 728 }
 729
 730 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 731                                    struct iw_request_info *info,
 732                                    struct iw_param *frag, char *extra)
 733 {
 734         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 735
 736         frag->value = local->fragmentation_threshold;
 737         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
 738         frag->fixed = 1;
 739
 740         return 0;
 741 }
 742
 743
 744 static int ieee80211_ioctl_siwretry(struct net_device *dev,
 745                                     struct iw_request_info *info,
 746                                     struct iw_param *retry, char *extra)
 747 {
 748         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 749
 750         if (retry->disabled ||
 751             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 752                 return -EINVAL;
 753
 754         if (retry->flags & IW_RETRY_MAX)
 755                 local->long_retry_limit = retry->value;
 756         else if (retry->flags & IW_RETRY_MIN)
 757                 local->short_retry_limit = retry->value;
 758         else {
 759                 local->long_retry_limit = retry->value;
 760                 local->short_retry_limit = retry->value;
 761         }
 762
 763         if (local->ops->set_retry_limit) {
 764                 return local->ops->set_retry_limit(
 765                         local_to_hw(local),
 766                         local->short_retry_limit,
 767                         local->long_retry_limit);
 768         }
 769
 770         return 0;
 771 }
 772
 773
 774 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 775                                     struct iw_request_info *info,
 776                                     struct iw_param *retry, char *extra)
 777 {
 778         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 779
 780         retry->disabled = 0;
 781         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 782                 /* first return min value, iwconfig will ask max value
 783                  * later if needed */
 784                 retry->flags |= IW_RETRY_LIMIT;
 785                 retry->value = local->short_retry_limit;
 786                 if (local->long_retry_limit != local->short_retry_limit)
 787                         retry->flags |= IW_RETRY_MIN;
 788                 return 0;
 789         }
 790         if (retry->flags & IW_RETRY_MAX) {
 791                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 792                 retry->value = local->long_retry_limit;
 793         }
 794
 795         return 0;
 796 }
 797
 798 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
 799                                    struct iw_request_info *info,
 800                                    struct iw_point *data, char *extra)
 801 {
 802         struct ieee80211_sub_if_data *sdata;
 803         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 804
 805         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 806         if (sdata->type != IEEE80211_IF_TYPE_STA &&
 807             sdata->type != IEEE80211_IF_TYPE_IBSS)
 808                 return -EINVAL;
 809
 810         switch (mlme->cmd) {
 811         case IW_MLME_DEAUTH:
 812                 /* TODO: mlme->addr.sa_data */
 813                 return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
 814         case IW_MLME_DISASSOC:
 815                 /* TODO: mlme->addr.sa_data */
 816                 return ieee80211_sta_disassociate(dev, mlme->reason_code);
 817         default:
 818                 return -EOPNOTSUPP;
 819         }
 820 }
 821
 822
 823 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 824                                      struct iw_request_info *info,
 825                                      struct iw_point *erq, char *keybuf)
 826 {
 827         struct ieee80211_sub_if_data *sdata;
 828         int idx, i, alg = ALG_WEP;
 829         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 830
 831         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 832
 833         idx = erq->flags & IW_ENCODE_INDEX;
 834         if (idx == 0) {
 835                 if (sdata->default_key)
 836                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 837                                 if (sdata->default_key == sdata->keys[i]) {
 838                                         idx = i;
 839                                         break;
 840                                 }
 841                         }
 842         } else if (idx < 1 || idx > 4)
 843                 return -EINVAL;
 844         else
 845                 idx--;
 846
 847         if (erq->flags & IW_ENCODE_DISABLED)
 848                 alg = ALG_NONE;
 849         else if (erq->length == 0) {
 850                 /* No key data - just set the default TX key index */
 851                 ieee80211_set_default_key(sdata, idx);
 852                 return 0;
 853         }
 854
 855         return ieee80211_set_encryption(
 856                 dev, bcaddr,
 857                 idx, alg,
 858                 !sdata->default_key,
 859                 keybuf, erq->length);
 860 }
 861
 862
 863 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 864                                      struct iw_request_info *info,
 865                                      struct iw_point *erq, char *key)
 866 {
 867         struct ieee80211_sub_if_data *sdata;
 868         int idx, i;
 869
 870         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 871
 872         idx = erq->flags & IW_ENCODE_INDEX;
 873         if (idx < 1 || idx > 4) {
 874                 idx = -1;
 875                 if (!sdata->default_key)
 876                         idx = 0;
 877                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 878                         if (sdata->default_key == sdata->keys[i]) {
 879                                 idx = i;
 880                                 break;
 881                         }
 882                 }
 883                 if (idx < 0)
 884                         return -EINVAL;
 885         } else
 886                 idx--;
 887
 888         erq->flags = idx + 1;
 889
 890         if (!sdata->keys[idx]) {
 891                 erq->length = 0;
 892                 erq->flags |= IW_ENCODE_DISABLED;
 893                 return 0;
 894         }
 895
 896         memcpy(key, sdata->keys[idx]->conf.key,
 897                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 898         erq->length = sdata->keys[idx]->conf.keylen;
 899         erq->flags |= IW_ENCODE_ENABLED;
 900
 901         return 0;
 902 }
 903
 904 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 905                                    struct iw_request_info *info,
 906                                    struct iw_param *data, char *extra)
 907 {
 908         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 909         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 910         int ret = 0;
 911
 912         switch (data->flags & IW_AUTH_INDEX) {
 913         case IW_AUTH_WPA_VERSION:
 914         case IW_AUTH_CIPHER_PAIRWISE:
 915         case IW_AUTH_CIPHER_GROUP:
 916         case IW_AUTH_WPA_ENABLED:
 917         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 918                 break;
 919         case IW_AUTH_KEY_MGMT:
 920                 if (sdata->type != IEEE80211_IF_TYPE_STA)
 921                         ret = -EINVAL;
 922                 else {
 923                         /*
 924                          * Key management was set by wpa_supplicant,
 925                          * we only need this to associate to a network
 926                          * that has privacy enabled regardless of not
 927                          * having a key.
 928                          */
 929                         sdata->u.sta.key_management_enabled = !!data->value;
 930                 }
 931                 break;
 932         case IW_AUTH_80211_AUTH_ALG:
 933                 if (sdata->type == IEEE80211_IF_TYPE_STA ||
 934                     sdata->type == IEEE80211_IF_TYPE_IBSS)
 935                         sdata->u.sta.auth_algs = data->value;
 936                 else
 937                         ret = -EOPNOTSUPP;
 938                 break;
 939         case IW_AUTH_PRIVACY_INVOKED:
 940                 if (local->ops->set_privacy_invoked)
 941                         ret = local->ops->set_privacy_invoked(
 942                                         local_to_hw(local), data->value);
 943                 break;
 944         default:
 945                 ret = -EOPNOTSUPP;
 946                 break;
 947         }
 948         return ret;
 949 }
 950
 951 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 952 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 953 {
 954         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 955         struct iw_statistics *wstats = &local->wstats;
 956         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 957         struct sta_info *sta = NULL;
 958
 959         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 960             sdata->type == IEEE80211_IF_TYPE_IBSS)
 961                 sta = sta_info_get(local, sdata->u.sta.bssid);
 962         if (!sta) {
 963                 wstats->discard.fragment = 0;
 964                 wstats->discard.misc = 0;
 965                 wstats->qual.qual = 0;
 966                 wstats->qual.level = 0;
 967                 wstats->qual.noise = 0;
 968                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
 969         } else {
 970                 wstats->qual.level = sta->last_rssi;
 971                 wstats->qual.qual = sta->last_signal;
 972                 wstats->qual.noise = sta->last_noise;
 973                 wstats->qual.updated = local->wstats_flags;
 974                 sta_info_put(sta);
 975         }
 976         return wstats;
 977 }
 978
 979 static int ieee80211_ioctl_giwauth(struct net_device *dev,
 980                                    struct iw_request_info *info,
 981                                    struct iw_param *data, char *extra)
 982 {
 983         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 984         int ret = 0;
 985
 986         switch (data->flags & IW_AUTH_INDEX) {
 987         case IW_AUTH_80211_AUTH_ALG:
 988                 if (sdata->type == IEEE80211_IF_TYPE_STA ||
 989                     sdata->type == IEEE80211_IF_TYPE_IBSS)
 990                         data->value = sdata->u.sta.auth_algs;
 991                 else
 992                         ret = -EOPNOTSUPP;
 993                 break;
 994         default:
 995                 ret = -EOPNOTSUPP;
 996                 break;
 997         }
 998         return ret;
 999 }
1000
1001
1002 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1003                                         struct iw_request_info *info,
1004                                         struct iw_point *erq, char *extra)
1005 {
1006         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1007         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1008         int alg, idx, i;
1009
1010         switch (ext->alg) {
1011         case IW_ENCODE_ALG_NONE:
1012                 alg = ALG_NONE;
1013                 break;
1014         case IW_ENCODE_ALG_WEP:
1015                 alg = ALG_WEP;
1016                 break;
1017         case IW_ENCODE_ALG_TKIP:
1018                 alg = ALG_TKIP;
1019                 break;
1020         case IW_ENCODE_ALG_CCMP:
1021                 alg = ALG_CCMP;
1022                 break;
1023         default:
1024                 return -EOPNOTSUPP;
1025         }
1026
1027         if (erq->flags & IW_ENCODE_DISABLED)
1028                 alg = ALG_NONE;
1029
1030         idx = erq->flags & IW_ENCODE_INDEX;
1031         if (idx < 1 || idx > 4) {
1032                 idx = -1;
1033                 if (!sdata->default_key)
1034                         idx = 0;
1035                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1036                         if (sdata->default_key == sdata->keys[i]) {
1037                                 idx = i;
1038                                 break;
1039                         }
1040                 }
1041                 if (idx < 0)
1042                         return -EINVAL;
1043         } else
1044                 idx--;
1045
1046         return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
1047                                         ext->ext_flags &
1048                                         IW_ENCODE_EXT_SET_TX_KEY,
1049                                         ext->key, ext->key_len);
1050 }
1051
1052
1053 /* Structures to export the Wireless Handlers */
1054
1055 static const iw_handler ieee80211_handler[] =
1056 {
1057         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1058         (iw_handler) ieee80211_ioctl_giwname,           /* SIOCGIWNAME */
1059         (iw_handler) NULL,                              /* SIOCSIWNWID */
1060         (iw_handler) NULL,                              /* SIOCGIWNWID */
1061         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1062         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1063         (iw_handler) ieee80211_ioctl_siwmode,           /* SIOCSIWMODE */
1064         (iw_handler) ieee80211_ioctl_giwmode,           /* SIOCGIWMODE */
1065         (iw_handler) NULL,                              /* SIOCSIWSENS */
1066         (iw_handler) NULL,                              /* SIOCGIWSENS */
1067         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1068         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1069         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1070         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1071         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1072         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1073         (iw_handler) NULL,                              /* SIOCSIWSPY */
1074         (iw_handler) NULL,                              /* SIOCGIWSPY */
1075         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1076         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1077         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1078         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1079         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1080         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1081         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1082         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1083         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1084         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1085         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1086         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1087         (iw_handler) NULL,                              /* -- hole -- */
1088         (iw_handler) NULL,                              /* -- hole -- */
1089         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1090         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1091         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1092         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1093         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1094         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1095         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1096         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1097         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1098         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1099         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1100         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1101         (iw_handler) NULL,                              /* SIOCSIWPOWER */
1102         (iw_handler) NULL,                              /* SIOCGIWPOWER */
1103         (iw_handler) NULL,                              /* -- hole -- */
1104         (iw_handler) NULL,                              /* -- hole -- */
1105         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1106         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1107         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1108         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1109         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1110         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1111         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1112         (iw_handler) NULL,                              /* -- hole -- */
1113 };
1114
1115 const struct iw_handler_def ieee80211_iw_handler_def =
1116 {
1117         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1118         .standard       = (iw_handler *) ieee80211_handler,
1119         .get_wireless_stats = ieee80211_get_wireless_stats,
1120 };