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 remove,
  31                                     int set_tx_key, const u8 *_key,
  32                                     size_t key_len)
  33 {
  34         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
  35         int ret = 0;
  36         struct sta_info *sta;
  37         struct ieee80211_key *key;
  38         struct ieee80211_sub_if_data *sdata;
  39
  40         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  41
  42         if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
  43                 printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
  44                        dev->name, idx);
  45                 return -EINVAL;
  46         }
  47
  48         if (is_broadcast_ether_addr(sta_addr)) {
  49                 sta = NULL;
  50                 key = sdata->keys[idx];
  51         } else {
  52                 set_tx_key = 0;
  53                 /*
  54                  * According to the standard, the key index of a pairwise
  55                  * key must be zero. However, some AP are broken when it
  56                  * comes to WEP key indices, so we work around this.
  57                  */
  58                 if (idx != 0 && alg != ALG_WEP) {
  59                         printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for "
  60                                "individual key\n", dev->name);
  61                         return -EINVAL;
  62                 }
  63
  64                 sta = sta_info_get(local, sta_addr);
  65                 if (!sta) {
  66 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
  67                         DECLARE_MAC_BUF(mac);
  68                         printk(KERN_DEBUG "%s: set_encrypt - unknown addr "
  69                                "%s\n",
  70                                dev->name, print_mac(mac, sta_addr));
  71 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
  72
  73                         return -ENOENT;
  74                 }
  75
  76                 key = sta->key;
  77         }
  78
  79         if (remove) {
  80                 ieee80211_key_free(key);
  81                 key = NULL;
  82         } else {
  83                 /*
  84                  * Automatically frees any old key if present.
  85                  */
  86                 key = ieee80211_key_alloc(sdata, sta, alg, idx, key_len, _key);
  87                 if (!key) {
  88                         ret = -ENOMEM;
  89                         goto err_out;
  90                 }
  91         }
  92
  93         if (set_tx_key || (!sta && !sdata->default_key && key))
  94                 ieee80211_set_default_key(sdata, idx);
  95
  96         ret = 0;
  97  err_out:
  98         if (sta)
  99                 sta_info_put(sta);
 100         return ret;
 101 }
 102
 103 static int ieee80211_ioctl_siwgenie(struct net_device *dev,
 104                                     struct iw_request_info *info,
 105                                     struct iw_point *data, char *extra)
 106 {
 107         struct ieee80211_sub_if_data *sdata;
 108
 109         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110
 111         if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
 112                 return -EOPNOTSUPP;
 113
 114         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 115             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 116                 int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
 117                 if (ret)
 118                         return ret;
 119                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 120                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 121                 return 0;
 122         }
 123
 124         return -EOPNOTSUPP;
 125 }
 126
 127 static int ieee80211_ioctl_giwname(struct net_device *dev,
 128                                    struct iw_request_info *info,
 129                                    char *name, char *extra)
 130 {
 131         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 132
 133         switch (local->hw.conf.phymode) {
 134         case MODE_IEEE80211A:
 135                 strcpy(name, "IEEE 802.11a");
 136                 break;
 137         case MODE_IEEE80211B:
 138                 strcpy(name, "IEEE 802.11b");
 139                 break;
 140         case MODE_IEEE80211G:
 141                 strcpy(name, "IEEE 802.11g");
 142                 break;
 143         default:
 144                 strcpy(name, "IEEE 802.11");
 145                 break;
 146         }
 147
 148         return 0;
 149 }
 150
 151
 152 static int ieee80211_ioctl_giwrange(struct net_device *dev,
 153                                  struct iw_request_info *info,
 154                                  struct iw_point *data, char *extra)
 155 {
 156         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 157         struct iw_range *range = (struct iw_range *) extra;
 158         struct ieee80211_hw_mode *mode = NULL;
 159         int c = 0;
 160
 161         data->length = sizeof(struct iw_range);
 162         memset(range, 0, sizeof(struct iw_range));
 163
 164         range->we_version_compiled = WIRELESS_EXT;
 165         range->we_version_source = 21;
 166         range->retry_capa = IW_RETRY_LIMIT;
 167         range->retry_flags = IW_RETRY_LIMIT;
 168         range->min_retry = 0;
 169         range->max_retry = 255;
 170         range->min_rts = 0;
 171         range->max_rts = 2347;
 172         range->min_frag = 256;
 173         range->max_frag = 2346;
 174
 175         range->encoding_size[0] = 5;
 176         range->encoding_size[1] = 13;
 177         range->num_encoding_sizes = 2;
 178         range->max_encoding_tokens = NUM_DEFAULT_KEYS;
 179
 180         range->max_qual.qual = local->hw.max_signal;
 181         range->max_qual.level = local->hw.max_rssi;
 182         range->max_qual.noise = local->hw.max_noise;
 183         range->max_qual.updated = local->wstats_flags;
 184
 185         range->avg_qual.qual = local->hw.max_signal/2;
 186         range->avg_qual.level = 0;
 187         range->avg_qual.noise = 0;
 188         range->avg_qual.updated = local->wstats_flags;
 189
 190         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
 191                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 192
 193         list_for_each_entry(mode, &local->modes_list, list) {
 194                 int i = 0;
 195
 196                 if (!(local->enabled_modes & (1 << mode->mode)) ||
 197                     (local->hw_modes & local->enabled_modes &
 198                      (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
 199                         continue;
 200
 201                 while (i < mode->num_channels && c < IW_MAX_FREQUENCIES) {
 202                         struct ieee80211_channel *chan = &mode->channels[i];
 203
 204                         if (chan->flag & IEEE80211_CHAN_W_SCAN) {
 205                                 range->freq[c].i = chan->chan;
 206                                 range->freq[c].m = chan->freq * 100000;
 207                                 range->freq[c].e = 1;
 208                                 c++;
 209                         }
 210                         i++;
 211                 }
 212         }
 213         range->num_channels = c;
 214         range->num_frequency = c;
 215
 216         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 217         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
 218         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 219         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 220
 221         return 0;
 222 }
 223
 224
 225 static int ieee80211_ioctl_siwmode(struct net_device *dev,
 226                                    struct iw_request_info *info,
 227                                    __u32 *mode, char *extra)
 228 {
 229         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 230         int type;
 231
 232         if (sdata->type == IEEE80211_IF_TYPE_VLAN)
 233                 return -EOPNOTSUPP;
 234
 235         switch (*mode) {
 236         case IW_MODE_INFRA:
 237                 type = IEEE80211_IF_TYPE_STA;
 238                 break;
 239         case IW_MODE_ADHOC:
 240                 type = IEEE80211_IF_TYPE_IBSS;
 241                 break;
 242         case IW_MODE_MONITOR:
 243                 type = IEEE80211_IF_TYPE_MNTR;
 244                 break;
 245         default:
 246                 return -EINVAL;
 247         }
 248
 249         if (type == sdata->type)
 250                 return 0;
 251         if (netif_running(dev))
 252                 return -EBUSY;
 253
 254         ieee80211_if_reinit(dev);
 255         ieee80211_if_set_type(dev, type);
 256
 257         return 0;
 258 }
 259
 260
 261 static int ieee80211_ioctl_giwmode(struct net_device *dev,
 262                                    struct iw_request_info *info,
 263                                    __u32 *mode, char *extra)
 264 {
 265         struct ieee80211_sub_if_data *sdata;
 266
 267         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 268         switch (sdata->type) {
 269         case IEEE80211_IF_TYPE_AP:
 270                 *mode = IW_MODE_MASTER;
 271                 break;
 272         case IEEE80211_IF_TYPE_STA:
 273                 *mode = IW_MODE_INFRA;
 274                 break;
 275         case IEEE80211_IF_TYPE_IBSS:
 276                 *mode = IW_MODE_ADHOC;
 277                 break;
 278         case IEEE80211_IF_TYPE_MNTR:
 279                 *mode = IW_MODE_MONITOR;
 280                 break;
 281         case IEEE80211_IF_TYPE_WDS:
 282                 *mode = IW_MODE_REPEAT;
 283                 break;
 284         case IEEE80211_IF_TYPE_VLAN:
 285                 *mode = IW_MODE_SECOND;         /* FIXME */
 286                 break;
 287         default:
 288                 *mode = IW_MODE_AUTO;
 289                 break;
 290         }
 291         return 0;
 292 }
 293
 294 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq)
 295 {
 296         struct ieee80211_hw_mode *mode;
 297         int c, set = 0;
 298         int ret = -EINVAL;
 299
 300         list_for_each_entry(mode, &local->modes_list, list) {
 301                 if (!(local->enabled_modes & (1 << mode->mode)))
 302                         continue;
 303                 for (c = 0; c < mode->num_channels; c++) {
 304                         struct ieee80211_channel *chan = &mode->channels[c];
 305                         if (chan->flag & IEEE80211_CHAN_W_SCAN &&
 306                             ((chan->chan == channel) || (chan->freq == freq))) {
 307                                 local->oper_channel = chan;
 308                                 local->oper_hw_mode = mode;
 309                                 set = 1;
 310                                 break;
 311                         }
 312                 }
 313                 if (set)
 314                         break;
 315         }
 316
 317         if (set) {
 318                 if (local->sta_sw_scanning)
 319                         ret = 0;
 320                 else
 321                         ret = ieee80211_hw_config(local);
 322
 323                 rate_control_clear(local);
 324         }
 325
 326         return ret;
 327 }
 328
 329 static int ieee80211_ioctl_siwfreq(struct net_device *dev,
 330                                    struct iw_request_info *info,
 331                                    struct iw_freq *freq, char *extra)
 332 {
 333         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 334         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 335
 336         if (sdata->type == IEEE80211_IF_TYPE_STA)
 337                 sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 338
 339         /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 340         if (freq->e == 0) {
 341                 if (freq->m < 0) {
 342                         if (sdata->type == IEEE80211_IF_TYPE_STA)
 343                                 sdata->u.sta.flags |=
 344                                         IEEE80211_STA_AUTO_CHANNEL_SEL;
 345                         return 0;
 346                 } else
 347                         return ieee80211_set_channel(local, freq->m, -1);
 348         } else {
 349                 int i, div = 1000000;
 350                 for (i = 0; i < freq->e; i++)
 351                         div /= 10;
 352                 if (div > 0)
 353                         return ieee80211_set_channel(local, -1, freq->m / div);
 354                 else
 355                         return -EINVAL;
 356         }
 357 }
 358
 359
 360 static int ieee80211_ioctl_giwfreq(struct net_device *dev,
 361                                    struct iw_request_info *info,
 362                                    struct iw_freq *freq, char *extra)
 363 {
 364         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 365
 366         /* TODO: in station mode (Managed/Ad-hoc) might need to poll low-level
 367          * driver for the current channel with firmware-based management */
 368
 369         freq->m = local->hw.conf.freq;
 370         freq->e = 6;
 371
 372         return 0;
 373 }
 374
 375
 376 static int ieee80211_ioctl_siwessid(struct net_device *dev,
 377                                     struct iw_request_info *info,
 378                                     struct iw_point *data, char *ssid)
 379 {
 380         struct ieee80211_sub_if_data *sdata;
 381         size_t len = data->length;
 382
 383         /* iwconfig uses nul termination in SSID.. */
 384         if (len > 0 && ssid[len - 1] == '\0')
 385                 len--;
 386
 387         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 388         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 389             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 390                 int ret;
 391                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 392                         if (len > IEEE80211_MAX_SSID_LEN)
 393                                 return -EINVAL;
 394                         memcpy(sdata->u.sta.ssid, ssid, len);
 395                         sdata->u.sta.ssid_len = len;
 396                         return 0;
 397                 }
 398                 if (data->flags)
 399                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
 400                 else
 401                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
 402                 ret = ieee80211_sta_set_ssid(dev, ssid, len);
 403                 if (ret)
 404                         return ret;
 405                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 406                 return 0;
 407         }
 408
 409         if (sdata->type == IEEE80211_IF_TYPE_AP) {
 410                 memcpy(sdata->u.ap.ssid, ssid, len);
 411                 memset(sdata->u.ap.ssid + len, 0,
 412                        IEEE80211_MAX_SSID_LEN - len);
 413                 sdata->u.ap.ssid_len = len;
 414                 return ieee80211_if_config(dev);
 415         }
 416         return -EOPNOTSUPP;
 417 }
 418
 419
 420 static int ieee80211_ioctl_giwessid(struct net_device *dev,
 421                                     struct iw_request_info *info,
 422                                     struct iw_point *data, char *ssid)
 423 {
 424         size_t len;
 425
 426         struct ieee80211_sub_if_data *sdata;
 427         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 428         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 429             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 430                 int res = ieee80211_sta_get_ssid(dev, ssid, &len);
 431                 if (res == 0) {
 432                         data->length = len;
 433                         data->flags = 1;
 434                 } else
 435                         data->flags = 0;
 436                 return res;
 437         }
 438
 439         if (sdata->type == IEEE80211_IF_TYPE_AP) {
 440                 len = sdata->u.ap.ssid_len;
 441                 if (len > IW_ESSID_MAX_SIZE)
 442                         len = IW_ESSID_MAX_SIZE;
 443                 memcpy(ssid, sdata->u.ap.ssid, len);
 444                 data->length = len;
 445                 data->flags = 1;
 446                 return 0;
 447         }
 448         return -EOPNOTSUPP;
 449 }
 450
 451
 452 static int ieee80211_ioctl_siwap(struct net_device *dev,
 453                                  struct iw_request_info *info,
 454                                  struct sockaddr *ap_addr, char *extra)
 455 {
 456         struct ieee80211_sub_if_data *sdata;
 457
 458         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 459         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 460             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 461                 int ret;
 462                 if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
 463                         memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
 464                                ETH_ALEN);
 465                         return 0;
 466                 }
 467                 if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
 468                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
 469                                 IEEE80211_STA_AUTO_CHANNEL_SEL;
 470                 else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
 471                         sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
 472                 else
 473                         sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
 474                 ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
 475                 if (ret)
 476                         return ret;
 477                 ieee80211_sta_req_auth(dev, &sdata->u.sta);
 478                 return 0;
 479         } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
 480                 if (memcmp(sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
 481                            ETH_ALEN) == 0)
 482                         return 0;
 483                 return ieee80211_if_update_wds(dev, (u8 *) &ap_addr->sa_data);
 484         }
 485
 486         return -EOPNOTSUPP;
 487 }
 488
 489
 490 static int ieee80211_ioctl_giwap(struct net_device *dev,
 491                                  struct iw_request_info *info,
 492                                  struct sockaddr *ap_addr, char *extra)
 493 {
 494         struct ieee80211_sub_if_data *sdata;
 495
 496         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 497         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 498             sdata->type == IEEE80211_IF_TYPE_IBSS) {
 499                 ap_addr->sa_family = ARPHRD_ETHER;
 500                 memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
 501                 return 0;
 502         } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
 503                 ap_addr->sa_family = ARPHRD_ETHER;
 504                 memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
 505                 return 0;
 506         }
 507
 508         return -EOPNOTSUPP;
 509 }
 510
 511
 512 static int ieee80211_ioctl_siwscan(struct net_device *dev,
 513                                    struct iw_request_info *info,
 514                                    union iwreq_data *wrqu, char *extra)
 515 {
 516         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 517         struct iw_scan_req *req = NULL;
 518         u8 *ssid = NULL;
 519         size_t ssid_len = 0;
 520
 521         if (!netif_running(dev))
 522                 return -ENETDOWN;
 523
 524         if (sdata->type != IEEE80211_IF_TYPE_STA &&
 525             sdata->type != IEEE80211_IF_TYPE_IBSS &&
 526             sdata->type != IEEE80211_IF_TYPE_AP) {
 527                 return -EOPNOTSUPP;
 528         }
 529
 530         /* if SSID was specified explicitly then use that */
 531         if (wrqu->data.length == sizeof(struct iw_scan_req) &&
 532             wrqu->data.flags & IW_SCAN_THIS_ESSID) {
 533                 req = (struct iw_scan_req *)extra;
 534                 ssid = req->essid;
 535                 ssid_len = req->essid_len;
 536         }
 537
 538         return ieee80211_sta_req_scan(dev, ssid, ssid_len);
 539 }
 540
 541
 542 static int ieee80211_ioctl_giwscan(struct net_device *dev,
 543                                    struct iw_request_info *info,
 544                                    struct iw_point *data, char *extra)
 545 {
 546         int res;
 547         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 548
 549         if (local->sta_sw_scanning || local->sta_hw_scanning)
 550                 return -EAGAIN;
 551
 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                         return 0;
 592                 }
 593         }
 594         return -EINVAL;
 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         u8 new_power_level;
 627
 628         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 629                 return -EINVAL;
 630         if (data->txpower.flags & IW_TXPOW_RANGE)
 631                 return -EINVAL;
 632
 633         if (data->txpower.fixed) {
 634                 new_power_level = data->txpower.value;
 635         } else {
 636                 /* Automatic power level. Get the px power from the current
 637                  * channel. */
 638                 struct ieee80211_channel* chan = local->oper_channel;
 639                 if (!chan)
 640                         return -EINVAL;
 641
 642                 new_power_level = chan->power_level;
 643         }
 644
 645         if (local->hw.conf.power_level != new_power_level) {
 646                 local->hw.conf.power_level = new_power_level;
 647                 need_reconfig = 1;
 648         }
 649
 650         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 651                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 652                 need_reconfig = 1;
 653         }
 654
 655         if (need_reconfig) {
 656                 ieee80211_hw_config(local);
 657                 /* The return value of hw_config is not of big interest here,
 658                  * as it doesn't say that it failed because of _this_ config
 659                  * change or something else. Ignore it. */
 660         }
 661
 662         return 0;
 663 }
 664
 665 static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
 666                                    struct iw_request_info *info,
 667                                    union iwreq_data *data, char *extra)
 668 {
 669         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 670
 671         data->txpower.fixed = 1;
 672         data->txpower.disabled = !(local->hw.conf.radio_enabled);
 673         data->txpower.value = local->hw.conf.power_level;
 674         data->txpower.flags = IW_TXPOW_DBM;
 675
 676         return 0;
 677 }
 678
 679 static int ieee80211_ioctl_siwrts(struct net_device *dev,
 680                                   struct iw_request_info *info,
 681                                   struct iw_param *rts, char *extra)
 682 {
 683         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 684
 685         if (rts->disabled)
 686                 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 687         else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
 688                 return -EINVAL;
 689         else
 690                 local->rts_threshold = rts->value;
 691
 692         /* If the wlan card performs RTS/CTS in hardware/firmware,
 693          * configure it here */
 694
 695         if (local->ops->set_rts_threshold)
 696                 local->ops->set_rts_threshold(local_to_hw(local),
 697                                              local->rts_threshold);
 698
 699         return 0;
 700 }
 701
 702 static int ieee80211_ioctl_giwrts(struct net_device *dev,
 703                                   struct iw_request_info *info,
 704                                   struct iw_param *rts, char *extra)
 705 {
 706         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 707
 708         rts->value = local->rts_threshold;
 709         rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
 710         rts->fixed = 1;
 711
 712         return 0;
 713 }
 714
 715
 716 static int ieee80211_ioctl_siwfrag(struct net_device *dev,
 717                                    struct iw_request_info *info,
 718                                    struct iw_param *frag, char *extra)
 719 {
 720         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 721
 722         if (frag->disabled)
 723                 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 724         else if (frag->value < 256 ||
 725                  frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
 726                 return -EINVAL;
 727         else {
 728                 /* Fragment length must be even, so strip LSB. */
 729                 local->fragmentation_threshold = frag->value & ~0x1;
 730         }
 731
 732         /* If the wlan card performs fragmentation in hardware/firmware,
 733          * configure it here */
 734
 735         if (local->ops->set_frag_threshold)
 736                 local->ops->set_frag_threshold(
 737                         local_to_hw(local),
 738                         local->fragmentation_threshold);
 739
 740         return 0;
 741 }
 742
 743 static int ieee80211_ioctl_giwfrag(struct net_device *dev,
 744                                    struct iw_request_info *info,
 745                                    struct iw_param *frag, char *extra)
 746 {
 747         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 748
 749         frag->value = local->fragmentation_threshold;
 750         frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
 751         frag->fixed = 1;
 752
 753         return 0;
 754 }
 755
 756
 757 static int ieee80211_ioctl_siwretry(struct net_device *dev,
 758                                     struct iw_request_info *info,
 759                                     struct iw_param *retry, char *extra)
 760 {
 761         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 762
 763         if (retry->disabled ||
 764             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 765                 return -EINVAL;
 766
 767         if (retry->flags & IW_RETRY_MAX)
 768                 local->long_retry_limit = retry->value;
 769         else if (retry->flags & IW_RETRY_MIN)
 770                 local->short_retry_limit = retry->value;
 771         else {
 772                 local->long_retry_limit = retry->value;
 773                 local->short_retry_limit = retry->value;
 774         }
 775
 776         if (local->ops->set_retry_limit) {
 777                 return local->ops->set_retry_limit(
 778                         local_to_hw(local),
 779                         local->short_retry_limit,
 780                         local->long_retry_limit);
 781         }
 782
 783         return 0;
 784 }
 785
 786
 787 static int ieee80211_ioctl_giwretry(struct net_device *dev,
 788                                     struct iw_request_info *info,
 789                                     struct iw_param *retry, char *extra)
 790 {
 791         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 792
 793         retry->disabled = 0;
 794         if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
 795                 /* first return min value, iwconfig will ask max value
 796                  * later if needed */
 797                 retry->flags |= IW_RETRY_LIMIT;
 798                 retry->value = local->short_retry_limit;
 799                 if (local->long_retry_limit != local->short_retry_limit)
 800                         retry->flags |= IW_RETRY_MIN;
 801                 return 0;
 802         }
 803         if (retry->flags & IW_RETRY_MAX) {
 804                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 805                 retry->value = local->long_retry_limit;
 806         }
 807
 808         return 0;
 809 }
 810
 811 static int ieee80211_ioctl_siwmlme(struct net_device *dev,
 812                                    struct iw_request_info *info,
 813                                    struct iw_point *data, char *extra)
 814 {
 815         struct ieee80211_sub_if_data *sdata;
 816         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 817
 818         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 819         if (sdata->type != IEEE80211_IF_TYPE_STA &&
 820             sdata->type != IEEE80211_IF_TYPE_IBSS)
 821                 return -EINVAL;
 822
 823         switch (mlme->cmd) {
 824         case IW_MLME_DEAUTH:
 825                 /* TODO: mlme->addr.sa_data */
 826                 return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
 827         case IW_MLME_DISASSOC:
 828                 /* TODO: mlme->addr.sa_data */
 829                 return ieee80211_sta_disassociate(dev, mlme->reason_code);
 830         default:
 831                 return -EOPNOTSUPP;
 832         }
 833 }
 834
 835
 836 static int ieee80211_ioctl_siwencode(struct net_device *dev,
 837                                      struct iw_request_info *info,
 838                                      struct iw_point *erq, char *keybuf)
 839 {
 840         struct ieee80211_sub_if_data *sdata;
 841         int idx, i, alg = ALG_WEP;
 842         u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 843         int remove = 0;
 844
 845         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 846
 847         idx = erq->flags & IW_ENCODE_INDEX;
 848         if (idx == 0) {
 849                 if (sdata->default_key)
 850                         for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 851                                 if (sdata->default_key == sdata->keys[i]) {
 852                                         idx = i;
 853                                         break;
 854                                 }
 855                         }
 856         } else if (idx < 1 || idx > 4)
 857                 return -EINVAL;
 858         else
 859                 idx--;
 860
 861         if (erq->flags & IW_ENCODE_DISABLED)
 862                 remove = 1;
 863         else if (erq->length == 0) {
 864                 /* No key data - just set the default TX key index */
 865                 ieee80211_set_default_key(sdata, idx);
 866                 return 0;
 867         }
 868
 869         return ieee80211_set_encryption(
 870                 dev, bcaddr,
 871                 idx, alg, remove,
 872                 !sdata->default_key,
 873                 keybuf, erq->length);
 874 }
 875
 876
 877 static int ieee80211_ioctl_giwencode(struct net_device *dev,
 878                                      struct iw_request_info *info,
 879                                      struct iw_point *erq, char *key)
 880 {
 881         struct ieee80211_sub_if_data *sdata;
 882         int idx, i;
 883
 884         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 885
 886         idx = erq->flags & IW_ENCODE_INDEX;
 887         if (idx < 1 || idx > 4) {
 888                 idx = -1;
 889                 if (!sdata->default_key)
 890                         idx = 0;
 891                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
 892                         if (sdata->default_key == sdata->keys[i]) {
 893                                 idx = i;
 894                                 break;
 895                         }
 896                 }
 897                 if (idx < 0)
 898                         return -EINVAL;
 899         } else
 900                 idx--;
 901
 902         erq->flags = idx + 1;
 903
 904         if (!sdata->keys[idx]) {
 905                 erq->length = 0;
 906                 erq->flags |= IW_ENCODE_DISABLED;
 907                 return 0;
 908         }
 909
 910         memcpy(key, sdata->keys[idx]->conf.key,
 911                min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
 912         erq->length = sdata->keys[idx]->conf.keylen;
 913         erq->flags |= IW_ENCODE_ENABLED;
 914
 915         return 0;
 916 }
 917
 918 static int ieee80211_ioctl_siwauth(struct net_device *dev,
 919                                    struct iw_request_info *info,
 920                                    struct iw_param *data, char *extra)
 921 {
 922         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 923         int ret = 0;
 924
 925         switch (data->flags & IW_AUTH_INDEX) {
 926         case IW_AUTH_WPA_VERSION:
 927         case IW_AUTH_CIPHER_PAIRWISE:
 928         case IW_AUTH_CIPHER_GROUP:
 929         case IW_AUTH_WPA_ENABLED:
 930         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 931         case IW_AUTH_KEY_MGMT:
 932                 break;
 933         case IW_AUTH_DROP_UNENCRYPTED:
 934                 sdata->drop_unencrypted = !!data->value;
 935                 break;
 936         case IW_AUTH_PRIVACY_INVOKED:
 937                 if (sdata->type != IEEE80211_IF_TYPE_STA)
 938                         ret = -EINVAL;
 939                 else {
 940                         sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 941                         /*
 942                          * Privacy invoked by wpa_supplicant, store the
 943                          * value and allow associating to a protected
 944                          * network without having a key up front.
 945                          */
 946                         if (data->value)
 947                                 sdata->u.sta.flags |=
 948                                         IEEE80211_STA_PRIVACY_INVOKED;
 949                 }
 950                 break;
 951         case IW_AUTH_80211_AUTH_ALG:
 952                 if (sdata->type == IEEE80211_IF_TYPE_STA ||
 953                     sdata->type == IEEE80211_IF_TYPE_IBSS)
 954                         sdata->u.sta.auth_algs = data->value;
 955                 else
 956                         ret = -EOPNOTSUPP;
 957                 break;
 958         default:
 959                 ret = -EOPNOTSUPP;
 960                 break;
 961         }
 962         return ret;
 963 }
 964
 965 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 966 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 967 {
 968         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 969         struct iw_statistics *wstats = &local->wstats;
 970         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 971         struct sta_info *sta = NULL;
 972
 973         if (sdata->type == IEEE80211_IF_TYPE_STA ||
 974             sdata->type == IEEE80211_IF_TYPE_IBSS)
 975                 sta = sta_info_get(local, sdata->u.sta.bssid);
 976         if (!sta) {
 977                 wstats->discard.fragment = 0;
 978                 wstats->discard.misc = 0;
 979                 wstats->qual.qual = 0;
 980                 wstats->qual.level = 0;
 981                 wstats->qual.noise = 0;
 982                 wstats->qual.updated = IW_QUAL_ALL_INVALID;
 983         } else {
 984                 wstats->qual.level = sta->last_rssi;
 985                 wstats->qual.qual = sta->last_signal;
 986                 wstats->qual.noise = sta->last_noise;
 987                 wstats->qual.updated = local->wstats_flags;
 988                 sta_info_put(sta);
 989         }
 990         return wstats;
 991 }
 992
 993 static int ieee80211_ioctl_giwauth(struct net_device *dev,
 994                                    struct iw_request_info *info,
 995                                    struct iw_param *data, char *extra)
 996 {
 997         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 998         int ret = 0;
 999
1000         switch (data->flags & IW_AUTH_INDEX) {
1001         case IW_AUTH_80211_AUTH_ALG:
1002                 if (sdata->type == IEEE80211_IF_TYPE_STA ||
1003                     sdata->type == IEEE80211_IF_TYPE_IBSS)
1004                         data->value = sdata->u.sta.auth_algs;
1005                 else
1006                         ret = -EOPNOTSUPP;
1007                 break;
1008         default:
1009                 ret = -EOPNOTSUPP;
1010                 break;
1011         }
1012         return ret;
1013 }
1014
1015
1016 static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
1017                                         struct iw_request_info *info,
1018                                         struct iw_point *erq, char *extra)
1019 {
1020         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1021         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
1022         int uninitialized_var(alg), idx, i, remove = 0;
1023
1024         switch (ext->alg) {
1025         case IW_ENCODE_ALG_NONE:
1026                 remove = 1;
1027                 break;
1028         case IW_ENCODE_ALG_WEP:
1029                 alg = ALG_WEP;
1030                 break;
1031         case IW_ENCODE_ALG_TKIP:
1032                 alg = ALG_TKIP;
1033                 break;
1034         case IW_ENCODE_ALG_CCMP:
1035                 alg = ALG_CCMP;
1036                 break;
1037         default:
1038                 return -EOPNOTSUPP;
1039         }
1040
1041         if (erq->flags & IW_ENCODE_DISABLED)
1042                 remove = 1;
1043
1044         idx = erq->flags & IW_ENCODE_INDEX;
1045         if (idx < 1 || idx > 4) {
1046                 idx = -1;
1047                 if (!sdata->default_key)
1048                         idx = 0;
1049                 else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
1050                         if (sdata->default_key == sdata->keys[i]) {
1051                                 idx = i;
1052                                 break;
1053                         }
1054                 }
1055                 if (idx < 0)
1056                         return -EINVAL;
1057         } else
1058                 idx--;
1059
1060         return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
1061                                         remove,
1062                                         ext->ext_flags &
1063                                         IW_ENCODE_EXT_SET_TX_KEY,
1064                                         ext->key, ext->key_len);
1065 }
1066
1067
1068 /* Structures to export the Wireless Handlers */
1069
1070 static const iw_handler ieee80211_handler[] =
1071 {
1072         (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
1073         (iw_handler) ieee80211_ioctl_giwname,           /* SIOCGIWNAME */
1074         (iw_handler) NULL,                              /* SIOCSIWNWID */
1075         (iw_handler) NULL,                              /* SIOCGIWNWID */
1076         (iw_handler) ieee80211_ioctl_siwfreq,           /* SIOCSIWFREQ */
1077         (iw_handler) ieee80211_ioctl_giwfreq,           /* SIOCGIWFREQ */
1078         (iw_handler) ieee80211_ioctl_siwmode,           /* SIOCSIWMODE */
1079         (iw_handler) ieee80211_ioctl_giwmode,           /* SIOCGIWMODE */
1080         (iw_handler) NULL,                              /* SIOCSIWSENS */
1081         (iw_handler) NULL,                              /* SIOCGIWSENS */
1082         (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
1083         (iw_handler) ieee80211_ioctl_giwrange,          /* SIOCGIWRANGE */
1084         (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
1085         (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
1086         (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
1087         (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
1088         (iw_handler) NULL,                              /* SIOCSIWSPY */
1089         (iw_handler) NULL,                              /* SIOCGIWSPY */
1090         (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
1091         (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
1092         (iw_handler) ieee80211_ioctl_siwap,             /* SIOCSIWAP */
1093         (iw_handler) ieee80211_ioctl_giwap,             /* SIOCGIWAP */
1094         (iw_handler) ieee80211_ioctl_siwmlme,           /* SIOCSIWMLME */
1095         (iw_handler) NULL,                              /* SIOCGIWAPLIST */
1096         (iw_handler) ieee80211_ioctl_siwscan,           /* SIOCSIWSCAN */
1097         (iw_handler) ieee80211_ioctl_giwscan,           /* SIOCGIWSCAN */
1098         (iw_handler) ieee80211_ioctl_siwessid,          /* SIOCSIWESSID */
1099         (iw_handler) ieee80211_ioctl_giwessid,          /* SIOCGIWESSID */
1100         (iw_handler) NULL,                              /* SIOCSIWNICKN */
1101         (iw_handler) NULL,                              /* SIOCGIWNICKN */
1102         (iw_handler) NULL,                              /* -- hole -- */
1103         (iw_handler) NULL,                              /* -- hole -- */
1104         (iw_handler) ieee80211_ioctl_siwrate,           /* SIOCSIWRATE */
1105         (iw_handler) ieee80211_ioctl_giwrate,           /* SIOCGIWRATE */
1106         (iw_handler) ieee80211_ioctl_siwrts,            /* SIOCSIWRTS */
1107         (iw_handler) ieee80211_ioctl_giwrts,            /* SIOCGIWRTS */
1108         (iw_handler) ieee80211_ioctl_siwfrag,           /* SIOCSIWFRAG */
1109         (iw_handler) ieee80211_ioctl_giwfrag,           /* SIOCGIWFRAG */
1110         (iw_handler) ieee80211_ioctl_siwtxpower,        /* SIOCSIWTXPOW */
1111         (iw_handler) ieee80211_ioctl_giwtxpower,        /* SIOCGIWTXPOW */
1112         (iw_handler) ieee80211_ioctl_siwretry,          /* SIOCSIWRETRY */
1113         (iw_handler) ieee80211_ioctl_giwretry,          /* SIOCGIWRETRY */
1114         (iw_handler) ieee80211_ioctl_siwencode,         /* SIOCSIWENCODE */
1115         (iw_handler) ieee80211_ioctl_giwencode,         /* SIOCGIWENCODE */
1116         (iw_handler) NULL,                              /* SIOCSIWPOWER */
1117         (iw_handler) NULL,                              /* SIOCGIWPOWER */
1118         (iw_handler) NULL,                              /* -- hole -- */
1119         (iw_handler) NULL,                              /* -- hole -- */
1120         (iw_handler) ieee80211_ioctl_siwgenie,          /* SIOCSIWGENIE */
1121         (iw_handler) NULL,                              /* SIOCGIWGENIE */
1122         (iw_handler) ieee80211_ioctl_siwauth,           /* SIOCSIWAUTH */
1123         (iw_handler) ieee80211_ioctl_giwauth,           /* SIOCGIWAUTH */
1124         (iw_handler) ieee80211_ioctl_siwencodeext,      /* SIOCSIWENCODEEXT */
1125         (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
1126         (iw_handler) NULL,                              /* SIOCSIWPMKSA */
1127         (iw_handler) NULL,                              /* -- hole -- */
1128 };
1129
1130 const struct iw_handler_def ieee80211_iw_handler_def =
1131 {
1132         .num_standard   = ARRAY_SIZE(ieee80211_handler),
1133         .standard       = (iw_handler *) ieee80211_handler,
1134         .get_wireless_stats = ieee80211_get_wireless_stats,
1135 };