net/wireless/wext-compat.c

   1 /*
   2  * cfg80211 - wext compat code
   3  *
   4  * This is temporary code until all wireless functionality is migrated
   5  * into cfg80211, when that happens all the exports here go away and
   6  * we directly assign the wireless handlers of wireless interfaces.
   7  *
   8  * Copyright 2008-2009  Johannes Berg <johannes@sipsolutions.net>
   9  */
  10
  11 #include <linux/export.h>
  12 #include <linux/wireless.h>
  13 #include <linux/nl80211.h>
  14 #include <linux/if_arp.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/slab.h>
  17 #include <net/iw_handler.h>
  18 #include <net/cfg80211.h>
  19 #include <net/cfg80211-wext.h>
  20 #include "wext-compat.h"
  21 #include "core.h"
  22 #include "rdev-ops.h"
  23
  24 int cfg80211_wext_giwname(struct net_device *dev,
  25                           struct iw_request_info *info,
  26                           char *name, char *extra)
  27 {
  28         struct wireless_dev *wdev = dev->ieee80211_ptr;
  29         struct ieee80211_supported_band *sband;
  30         bool is_ht = false, is_a = false, is_b = false, is_g = false;
  31
  32         if (!wdev)
  33                 return -EOPNOTSUPP;
  34
  35         sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
  36         if (sband) {
  37                 is_a = true;
  38                 is_ht |= sband->ht_cap.ht_supported;
  39         }
  40
  41         sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
  42         if (sband) {
  43                 int i;
  44                 /* Check for mandatory rates */
  45                 for (i = 0; i < sband->n_bitrates; i++) {
  46                         if (sband->bitrates[i].bitrate == 10)
  47                                 is_b = true;
  48                         if (sband->bitrates[i].bitrate == 60)
  49                                 is_g = true;
  50                 }
  51                 is_ht |= sband->ht_cap.ht_supported;
  52         }
  53
  54         strcpy(name, "IEEE 802.11");
  55         if (is_a)
  56                 strcat(name, "a");
  57         if (is_b)
  58                 strcat(name, "b");
  59         if (is_g)
  60                 strcat(name, "g");
  61         if (is_ht)
  62                 strcat(name, "n");
  63
  64         return 0;
  65 }
  66 EXPORT_SYMBOL_GPL(cfg80211_wext_giwname);
  67
  68 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  69                           u32 *mode, char *extra)
  70 {
  71         struct wireless_dev *wdev = dev->ieee80211_ptr;
  72         struct cfg80211_registered_device *rdev;
  73         struct vif_params vifparams;
  74         enum nl80211_iftype type;
  75         int ret;
  76
  77         rdev = wiphy_to_dev(wdev->wiphy);
  78
  79         switch (*mode) {
  80         case IW_MODE_INFRA:
  81                 type = NL80211_IFTYPE_STATION;
  82                 break;
  83         case IW_MODE_ADHOC:
  84                 type = NL80211_IFTYPE_ADHOC;
  85                 break;
  86         case IW_MODE_REPEAT:
  87                 type = NL80211_IFTYPE_WDS;
  88                 break;
  89         case IW_MODE_MONITOR:
  90                 type = NL80211_IFTYPE_MONITOR;
  91                 break;
  92         default:
  93                 return -EINVAL;
  94         }
  95
  96         if (type == wdev->iftype)
  97                 return 0;
  98
  99         memset(&vifparams, 0, sizeof(vifparams));
 100
 101         cfg80211_lock_rdev(rdev);
 102         ret = cfg80211_change_iface(rdev, dev, type, NULL, &vifparams);
 103         cfg80211_unlock_rdev(rdev);
 104
 105         return ret;
 106 }
 107 EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode);
 108
 109 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
 110                           u32 *mode, char *extra)
 111 {
 112         struct wireless_dev *wdev = dev->ieee80211_ptr;
 113
 114         if (!wdev)
 115                 return -EOPNOTSUPP;
 116
 117         switch (wdev->iftype) {
 118         case NL80211_IFTYPE_AP:
 119                 *mode = IW_MODE_MASTER;
 120                 break;
 121         case NL80211_IFTYPE_STATION:
 122                 *mode = IW_MODE_INFRA;
 123                 break;
 124         case NL80211_IFTYPE_ADHOC:
 125                 *mode = IW_MODE_ADHOC;
 126                 break;
 127         case NL80211_IFTYPE_MONITOR:
 128                 *mode = IW_MODE_MONITOR;
 129                 break;
 130         case NL80211_IFTYPE_WDS:
 131                 *mode = IW_MODE_REPEAT;
 132                 break;
 133         case NL80211_IFTYPE_AP_VLAN:
 134                 *mode = IW_MODE_SECOND;         /* FIXME */
 135                 break;
 136         default:
 137                 *mode = IW_MODE_AUTO;
 138                 break;
 139         }
 140         return 0;
 141 }
 142 EXPORT_SYMBOL_GPL(cfg80211_wext_giwmode);
 143
 144
 145 int cfg80211_wext_giwrange(struct net_device *dev,
 146                            struct iw_request_info *info,
 147                            struct iw_point *data, char *extra)
 148 {
 149         struct wireless_dev *wdev = dev->ieee80211_ptr;
 150         struct iw_range *range = (struct iw_range *) extra;
 151         enum ieee80211_band band;
 152         int i, c = 0;
 153
 154         if (!wdev)
 155                 return -EOPNOTSUPP;
 156
 157         data->length = sizeof(struct iw_range);
 158         memset(range, 0, sizeof(struct iw_range));
 159
 160         range->we_version_compiled = WIRELESS_EXT;
 161         range->we_version_source = 21;
 162         range->retry_capa = IW_RETRY_LIMIT;
 163         range->retry_flags = IW_RETRY_LIMIT;
 164         range->min_retry = 0;
 165         range->max_retry = 255;
 166         range->min_rts = 0;
 167         range->max_rts = 2347;
 168         range->min_frag = 256;
 169         range->max_frag = 2346;
 170
 171         range->max_encoding_tokens = 4;
 172
 173         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 174
 175         switch (wdev->wiphy->signal_type) {
 176         case CFG80211_SIGNAL_TYPE_NONE:
 177                 break;
 178         case CFG80211_SIGNAL_TYPE_MBM:
 179                 range->max_qual.level = -110;
 180                 range->max_qual.qual = 70;
 181                 range->avg_qual.qual = 35;
 182                 range->max_qual.updated |= IW_QUAL_DBM;
 183                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 184                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 185                 break;
 186         case CFG80211_SIGNAL_TYPE_UNSPEC:
 187                 range->max_qual.level = 100;
 188                 range->max_qual.qual = 100;
 189                 range->avg_qual.qual = 50;
 190                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 191                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 192                 break;
 193         }
 194
 195         range->avg_qual.level = range->max_qual.level / 2;
 196         range->avg_qual.noise = range->max_qual.noise / 2;
 197         range->avg_qual.updated = range->max_qual.updated;
 198
 199         for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 200                 switch (wdev->wiphy->cipher_suites[i]) {
 201                 case WLAN_CIPHER_SUITE_TKIP:
 202                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 203                                             IW_ENC_CAPA_WPA);
 204                         break;
 205
 206                 case WLAN_CIPHER_SUITE_CCMP:
 207                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 208                                             IW_ENC_CAPA_WPA2);
 209                         break;
 210
 211                 case WLAN_CIPHER_SUITE_WEP40:
 212                         range->encoding_size[range->num_encoding_sizes++] =
 213                                 WLAN_KEY_LEN_WEP40;
 214                         break;
 215
 216                 case WLAN_CIPHER_SUITE_WEP104:
 217                         range->encoding_size[range->num_encoding_sizes++] =
 218                                 WLAN_KEY_LEN_WEP104;
 219                         break;
 220                 }
 221         }
 222
 223         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 224                 struct ieee80211_supported_band *sband;
 225
 226                 sband = wdev->wiphy->bands[band];
 227
 228                 if (!sband)
 229                         continue;
 230
 231                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 232                         struct ieee80211_channel *chan = &sband->channels[i];
 233
 234                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 235                                 range->freq[c].i =
 236                                         ieee80211_frequency_to_channel(
 237                                                 chan->center_freq);
 238                                 range->freq[c].m = chan->center_freq;
 239                                 range->freq[c].e = 6;
 240                                 c++;
 241                         }
 242                 }
 243         }
 244         range->num_channels = c;
 245         range->num_frequency = c;
 246
 247         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 248         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 249         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 250
 251         if (wdev->wiphy->max_scan_ssids > 0)
 252                 range->scan_capa |= IW_SCAN_CAPA_ESSID;
 253
 254         return 0;
 255 }
 256 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);
 257
 258
 259 /**
 260  * cfg80211_wext_freq - get wext frequency for non-"auto"
 261  * @wiphy: the wiphy
 262  * @freq: the wext freq encoding
 263  *
 264  * Returns a frequency, or a negative error code, or 0 for auto.
 265  */
 266 int cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq)
 267 {
 268         /*
 269          * Parse frequency - return 0 for auto and
 270          * -EINVAL for impossible things.
 271          */
 272         if (freq->e == 0) {
 273                 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
 274                 if (freq->m < 0)
 275                         return 0;
 276                 if (freq->m > 14)
 277                         band = IEEE80211_BAND_5GHZ;
 278                 return ieee80211_channel_to_frequency(freq->m, band);
 279         } else {
 280                 int i, div = 1000000;
 281                 for (i = 0; i < freq->e; i++)
 282                         div /= 10;
 283                 if (div <= 0)
 284                         return -EINVAL;
 285                 return freq->m / div;
 286         }
 287 }
 288
 289 int cfg80211_wext_siwrts(struct net_device *dev,
 290                          struct iw_request_info *info,
 291                          struct iw_param *rts, char *extra)
 292 {
 293         struct wireless_dev *wdev = dev->ieee80211_ptr;
 294         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 295         u32 orts = wdev->wiphy->rts_threshold;
 296         int err;
 297
 298         if (rts->disabled || !rts->fixed)
 299                 wdev->wiphy->rts_threshold = (u32) -1;
 300         else if (rts->value < 0)
 301                 return -EINVAL;
 302         else
 303                 wdev->wiphy->rts_threshold = rts->value;
 304
 305         err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
 306         if (err)
 307                 wdev->wiphy->rts_threshold = orts;
 308
 309         return err;
 310 }
 311 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);
 312
 313 int cfg80211_wext_giwrts(struct net_device *dev,
 314                          struct iw_request_info *info,
 315                          struct iw_param *rts, char *extra)
 316 {
 317         struct wireless_dev *wdev = dev->ieee80211_ptr;
 318
 319         rts->value = wdev->wiphy->rts_threshold;
 320         rts->disabled = rts->value == (u32) -1;
 321         rts->fixed = 1;
 322
 323         return 0;
 324 }
 325 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);
 326
 327 int cfg80211_wext_siwfrag(struct net_device *dev,
 328                           struct iw_request_info *info,
 329                           struct iw_param *frag, char *extra)
 330 {
 331         struct wireless_dev *wdev = dev->ieee80211_ptr;
 332         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 333         u32 ofrag = wdev->wiphy->frag_threshold;
 334         int err;
 335
 336         if (frag->disabled || !frag->fixed)
 337                 wdev->wiphy->frag_threshold = (u32) -1;
 338         else if (frag->value < 256)
 339                 return -EINVAL;
 340         else {
 341                 /* Fragment length must be even, so strip LSB. */
 342                 wdev->wiphy->frag_threshold = frag->value & ~0x1;
 343         }
 344
 345         err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
 346         if (err)
 347                 wdev->wiphy->frag_threshold = ofrag;
 348
 349         return err;
 350 }
 351 EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);
 352
 353 int cfg80211_wext_giwfrag(struct net_device *dev,
 354                           struct iw_request_info *info,
 355                           struct iw_param *frag, char *extra)
 356 {
 357         struct wireless_dev *wdev = dev->ieee80211_ptr;
 358
 359         frag->value = wdev->wiphy->frag_threshold;
 360         frag->disabled = frag->value == (u32) -1;
 361         frag->fixed = 1;
 362
 363         return 0;
 364 }
 365 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);
 366
 367 static int cfg80211_wext_siwretry(struct net_device *dev,
 368                                   struct iw_request_info *info,
 369                                   struct iw_param *retry, char *extra)
 370 {
 371         struct wireless_dev *wdev = dev->ieee80211_ptr;
 372         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 373         u32 changed = 0;
 374         u8 olong = wdev->wiphy->retry_long;
 375         u8 oshort = wdev->wiphy->retry_short;
 376         int err;
 377
 378         if (retry->disabled ||
 379             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 380                 return -EINVAL;
 381
 382         if (retry->flags & IW_RETRY_LONG) {
 383                 wdev->wiphy->retry_long = retry->value;
 384                 changed |= WIPHY_PARAM_RETRY_LONG;
 385         } else if (retry->flags & IW_RETRY_SHORT) {
 386                 wdev->wiphy->retry_short = retry->value;
 387                 changed |= WIPHY_PARAM_RETRY_SHORT;
 388         } else {
 389                 wdev->wiphy->retry_short = retry->value;
 390                 wdev->wiphy->retry_long = retry->value;
 391                 changed |= WIPHY_PARAM_RETRY_LONG;
 392                 changed |= WIPHY_PARAM_RETRY_SHORT;
 393         }
 394
 395         if (!changed)
 396                 return 0;
 397
 398         err = rdev_set_wiphy_params(rdev, changed);
 399         if (err) {
 400                 wdev->wiphy->retry_short = oshort;
 401                 wdev->wiphy->retry_long = olong;
 402         }
 403
 404         return err;
 405 }
 406
 407 int cfg80211_wext_giwretry(struct net_device *dev,
 408                            struct iw_request_info *info,
 409                            struct iw_param *retry, char *extra)
 410 {
 411         struct wireless_dev *wdev = dev->ieee80211_ptr;
 412
 413         retry->disabled = 0;
 414
 415         if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 416                 /*
 417                  * First return short value, iwconfig will ask long value
 418                  * later if needed
 419                  */
 420                 retry->flags |= IW_RETRY_LIMIT;
 421                 retry->value = wdev->wiphy->retry_short;
 422                 if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
 423                         retry->flags |= IW_RETRY_LONG;
 424
 425                 return 0;
 426         }
 427
 428         if (retry->flags & IW_RETRY_LONG) {
 429                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 430                 retry->value = wdev->wiphy->retry_long;
 431         }
 432
 433         return 0;
 434 }
 435 EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);
 436
 437 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 438                                      struct net_device *dev, bool pairwise,
 439                                      const u8 *addr, bool remove, bool tx_key,
 440                                      int idx, struct key_params *params)
 441 {
 442         struct wireless_dev *wdev = dev->ieee80211_ptr;
 443         int err, i;
 444         bool rejoin = false;
 445
 446         if (pairwise && !addr)
 447                 return -EINVAL;
 448
 449         if (!wdev->wext.keys) {
 450                 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 451                                               GFP_KERNEL);
 452                 if (!wdev->wext.keys)
 453                         return -ENOMEM;
 454                 for (i = 0; i < 6; i++)
 455                         wdev->wext.keys->params[i].key =
 456                                 wdev->wext.keys->data[i];
 457         }
 458
 459         if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 460             wdev->iftype != NL80211_IFTYPE_STATION)
 461                 return -EOPNOTSUPP;
 462
 463         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 464                 if (!wdev->current_bss)
 465                         return -ENOLINK;
 466
 467                 if (!rdev->ops->set_default_mgmt_key)
 468                         return -EOPNOTSUPP;
 469
 470                 if (idx < 4 || idx > 5)
 471                         return -EINVAL;
 472         } else if (idx < 0 || idx > 3)
 473                 return -EINVAL;
 474
 475         if (remove) {
 476                 err = 0;
 477                 if (wdev->current_bss) {
 478                         /*
 479                          * If removing the current TX key, we will need to
 480                          * join a new IBSS without the privacy bit clear.
 481                          */
 482                         if (idx == wdev->wext.default_key &&
 483                             wdev->iftype == NL80211_IFTYPE_ADHOC) {
 484                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 485                                 rejoin = true;
 486                         }
 487
 488                         if (!pairwise && addr &&
 489                             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
 490                                 err = -ENOENT;
 491                         else
 492                                 err = rdev_del_key(rdev, dev, idx, pairwise,
 493                                                    addr);
 494                 }
 495                 wdev->wext.connect.privacy = false;
 496                 /*
 497                  * Applications using wireless extensions expect to be
 498                  * able to delete keys that don't exist, so allow that.
 499                  */
 500                 if (err == -ENOENT)
 501                         err = 0;
 502                 if (!err) {
 503                         if (!addr) {
 504                                 wdev->wext.keys->params[idx].key_len = 0;
 505                                 wdev->wext.keys->params[idx].cipher = 0;
 506                         }
 507                         if (idx == wdev->wext.default_key)
 508                                 wdev->wext.default_key = -1;
 509                         else if (idx == wdev->wext.default_mgmt_key)
 510                                 wdev->wext.default_mgmt_key = -1;
 511                 }
 512
 513                 if (!err && rejoin)
 514                         err = cfg80211_ibss_wext_join(rdev, wdev);
 515
 516                 return err;
 517         }
 518
 519         if (addr)
 520                 tx_key = false;
 521
 522         if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
 523                 return -EINVAL;
 524
 525         err = 0;
 526         if (wdev->current_bss)
 527                 err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
 528         if (err)
 529                 return err;
 530
 531         if (!addr) {
 532                 wdev->wext.keys->params[idx] = *params;
 533                 memcpy(wdev->wext.keys->data[idx],
 534                         params->key, params->key_len);
 535                 wdev->wext.keys->params[idx].key =
 536                         wdev->wext.keys->data[idx];
 537         }
 538
 539         if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 540              params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 541             (tx_key || (!addr && wdev->wext.default_key == -1))) {
 542                 if (wdev->current_bss) {
 543                         /*
 544                          * If we are getting a new TX key from not having
 545                          * had one before we need to join a new IBSS with
 546                          * the privacy bit set.
 547                          */
 548                         if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 549                             wdev->wext.default_key == -1) {
 550                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 551                                 rejoin = true;
 552                         }
 553                         err = rdev_set_default_key(rdev, dev, idx, true, true);
 554                 }
 555                 if (!err) {
 556                         wdev->wext.default_key = idx;
 557                         if (rejoin)
 558                                 err = cfg80211_ibss_wext_join(rdev, wdev);
 559                 }
 560                 return err;
 561         }
 562
 563         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 564             (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 565                 if (wdev->current_bss)
 566                         err = rdev_set_default_mgmt_key(rdev, dev, idx);
 567                 if (!err)
 568                         wdev->wext.default_mgmt_key = idx;
 569                 return err;
 570         }
 571
 572         return 0;
 573 }
 574
 575 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 576                                    struct net_device *dev, bool pairwise,
 577                                    const u8 *addr, bool remove, bool tx_key,
 578                                    int idx, struct key_params *params)
 579 {
 580         int err;
 581
 582         /* devlist mutex needed for possible IBSS re-join */
 583         mutex_lock(&rdev->devlist_mtx);
 584         wdev_lock(dev->ieee80211_ptr);
 585         err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
 586                                         remove, tx_key, idx, params);
 587         wdev_unlock(dev->ieee80211_ptr);
 588         mutex_unlock(&rdev->devlist_mtx);
 589
 590         return err;
 591 }
 592
 593 static int cfg80211_wext_siwencode(struct net_device *dev,
 594                                    struct iw_request_info *info,
 595                                    struct iw_point *erq, char *keybuf)
 596 {
 597         struct wireless_dev *wdev = dev->ieee80211_ptr;
 598         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 599         int idx, err;
 600         bool remove = false;
 601         struct key_params params;
 602
 603         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 604             wdev->iftype != NL80211_IFTYPE_ADHOC)
 605                 return -EOPNOTSUPP;
 606
 607         /* no use -- only MFP (set_default_mgmt_key) is optional */
 608         if (!rdev->ops->del_key ||
 609             !rdev->ops->add_key ||
 610             !rdev->ops->set_default_key)
 611                 return -EOPNOTSUPP;
 612
 613         idx = erq->flags & IW_ENCODE_INDEX;
 614         if (idx == 0) {
 615                 idx = wdev->wext.default_key;
 616                 if (idx < 0)
 617                         idx = 0;
 618         } else if (idx < 1 || idx > 4)
 619                 return -EINVAL;
 620         else
 621                 idx--;
 622
 623         if (erq->flags & IW_ENCODE_DISABLED)
 624                 remove = true;
 625         else if (erq->length == 0) {
 626                 /* No key data - just set the default TX key index */
 627                 err = 0;
 628                 wdev_lock(wdev);
 629                 if (wdev->current_bss)
 630                         err = rdev_set_default_key(rdev, dev, idx, true,
 631                                                    true);
 632                 if (!err)
 633                         wdev->wext.default_key = idx;
 634                 wdev_unlock(wdev);
 635                 return err;
 636         }
 637
 638         memset(&params, 0, sizeof(params));
 639         params.key = keybuf;
 640         params.key_len = erq->length;
 641         if (erq->length == 5)
 642                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 643         else if (erq->length == 13)
 644                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 645         else if (!remove)
 646                 return -EINVAL;
 647
 648         return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
 649                                        wdev->wext.default_key == -1,
 650                                        idx, &params);
 651 }
 652
 653 static int cfg80211_wext_siwencodeext(struct net_device *dev,
 654                                       struct iw_request_info *info,
 655                                       struct iw_point *erq, char *extra)
 656 {
 657         struct wireless_dev *wdev = dev->ieee80211_ptr;
 658         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 659         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 660         const u8 *addr;
 661         int idx;
 662         bool remove = false;
 663         struct key_params params;
 664         u32 cipher;
 665
 666         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 667             wdev->iftype != NL80211_IFTYPE_ADHOC)
 668                 return -EOPNOTSUPP;
 669
 670         /* no use -- only MFP (set_default_mgmt_key) is optional */
 671         if (!rdev->ops->del_key ||
 672             !rdev->ops->add_key ||
 673             !rdev->ops->set_default_key)
 674                 return -EOPNOTSUPP;
 675
 676         switch (ext->alg) {
 677         case IW_ENCODE_ALG_NONE:
 678                 remove = true;
 679                 cipher = 0;
 680                 break;
 681         case IW_ENCODE_ALG_WEP:
 682                 if (ext->key_len == 5)
 683                         cipher = WLAN_CIPHER_SUITE_WEP40;
 684                 else if (ext->key_len == 13)
 685                         cipher = WLAN_CIPHER_SUITE_WEP104;
 686                 else
 687                         return -EINVAL;
 688                 break;
 689         case IW_ENCODE_ALG_TKIP:
 690                 cipher = WLAN_CIPHER_SUITE_TKIP;
 691                 break;
 692         case IW_ENCODE_ALG_CCMP:
 693                 cipher = WLAN_CIPHER_SUITE_CCMP;
 694                 break;
 695         case IW_ENCODE_ALG_AES_CMAC:
 696                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 697                 break;
 698         default:
 699                 return -EOPNOTSUPP;
 700         }
 701
 702         if (erq->flags & IW_ENCODE_DISABLED)
 703                 remove = true;
 704
 705         idx = erq->flags & IW_ENCODE_INDEX;
 706         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 707                 if (idx < 4 || idx > 5) {
 708                         idx = wdev->wext.default_mgmt_key;
 709                         if (idx < 0)
 710                                 return -EINVAL;
 711                 } else
 712                         idx--;
 713         } else {
 714                 if (idx < 1 || idx > 4) {
 715                         idx = wdev->wext.default_key;
 716                         if (idx < 0)
 717                                 return -EINVAL;
 718                 } else
 719                         idx--;
 720         }
 721
 722         addr = ext->addr.sa_data;
 723         if (is_broadcast_ether_addr(addr))
 724                 addr = NULL;
 725
 726         memset(&params, 0, sizeof(params));
 727         params.key = ext->key;
 728         params.key_len = ext->key_len;
 729         params.cipher = cipher;
 730
 731         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 732                 params.seq = ext->rx_seq;
 733                 params.seq_len = 6;
 734         }
 735
 736         return cfg80211_set_encryption(
 737                         rdev, dev,
 738                         !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
 739                         addr, remove,
 740                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 741                         idx, &params);
 742 }
 743
 744 static int cfg80211_wext_giwencode(struct net_device *dev,
 745                                    struct iw_request_info *info,
 746                                    struct iw_point *erq, char *keybuf)
 747 {
 748         struct wireless_dev *wdev = dev->ieee80211_ptr;
 749         int idx;
 750
 751         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 752             wdev->iftype != NL80211_IFTYPE_ADHOC)
 753                 return -EOPNOTSUPP;
 754
 755         idx = erq->flags & IW_ENCODE_INDEX;
 756         if (idx == 0) {
 757                 idx = wdev->wext.default_key;
 758                 if (idx < 0)
 759                         idx = 0;
 760         } else if (idx < 1 || idx > 4)
 761                 return -EINVAL;
 762         else
 763                 idx--;
 764
 765         erq->flags = idx + 1;
 766
 767         if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 768                 erq->flags |= IW_ENCODE_DISABLED;
 769                 erq->length = 0;
 770                 return 0;
 771         }
 772
 773         erq->length = min_t(size_t, erq->length,
 774                             wdev->wext.keys->params[idx].key_len);
 775         memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 776         erq->flags |= IW_ENCODE_ENABLED;
 777
 778         return 0;
 779 }
 780
 781 static int cfg80211_wext_siwfreq(struct net_device *dev,
 782                                  struct iw_request_info *info,
 783                                  struct iw_freq *wextfreq, char *extra)
 784 {
 785         struct wireless_dev *wdev = dev->ieee80211_ptr;
 786         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 787         int freq, err;
 788
 789         switch (wdev->iftype) {
 790         case NL80211_IFTYPE_STATION:
 791                 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 792         case NL80211_IFTYPE_ADHOC:
 793                 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 794         case NL80211_IFTYPE_MONITOR:
 795                 freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
 796                 if (freq < 0)
 797                         return freq;
 798                 if (freq == 0)
 799                         return -EINVAL;
 800                 mutex_lock(&rdev->devlist_mtx);
 801                 err = cfg80211_set_monitor_channel(rdev, freq, NL80211_CHAN_NO_HT);
 802                 mutex_unlock(&rdev->devlist_mtx);
 803                 return err;
 804         case NL80211_IFTYPE_MESH_POINT:
 805                 freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
 806                 if (freq < 0)
 807                         return freq;
 808                 if (freq == 0)
 809                         return -EINVAL;
 810                 mutex_lock(&rdev->devlist_mtx);
 811                 err = cfg80211_set_mesh_freq(rdev, wdev, freq,
 812                                              NL80211_CHAN_NO_HT);
 813                 mutex_unlock(&rdev->devlist_mtx);
 814                 return err;
 815         default:
 816                 return -EOPNOTSUPP;
 817         }
 818 }
 819
 820 static int cfg80211_wext_giwfreq(struct net_device *dev,
 821                                  struct iw_request_info *info,
 822                                  struct iw_freq *freq, char *extra)
 823 {
 824         struct wireless_dev *wdev = dev->ieee80211_ptr;
 825         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 826         struct ieee80211_channel *chan;
 827         enum nl80211_channel_type channel_type;
 828
 829         switch (wdev->iftype) {
 830         case NL80211_IFTYPE_STATION:
 831                 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 832         case NL80211_IFTYPE_ADHOC:
 833                 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 834         case NL80211_IFTYPE_MONITOR:
 835                 if (!rdev->ops->get_channel)
 836                         return -EINVAL;
 837
 838                 chan = rdev_get_channel(rdev, wdev, &channel_type);
 839                 if (!chan)
 840                         return -EINVAL;
 841                 freq->m = chan->center_freq;
 842                 freq->e = 6;
 843                 return 0;
 844         default:
 845                 return -EINVAL;
 846         }
 847 }
 848
 849 static int cfg80211_wext_siwtxpower(struct net_device *dev,
 850                                     struct iw_request_info *info,
 851                                     union iwreq_data *data, char *extra)
 852 {
 853         struct wireless_dev *wdev = dev->ieee80211_ptr;
 854         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 855         enum nl80211_tx_power_setting type;
 856         int dbm = 0;
 857
 858         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 859                 return -EINVAL;
 860         if (data->txpower.flags & IW_TXPOW_RANGE)
 861                 return -EINVAL;
 862
 863         if (!rdev->ops->set_tx_power)
 864                 return -EOPNOTSUPP;
 865
 866         /* only change when not disabling */
 867         if (!data->txpower.disabled) {
 868                 rfkill_set_sw_state(rdev->rfkill, false);
 869
 870                 if (data->txpower.fixed) {
 871                         /*
 872                          * wext doesn't support negative values, see
 873                          * below where it's for automatic
 874                          */
 875                         if (data->txpower.value < 0)
 876                                 return -EINVAL;
 877                         dbm = data->txpower.value;
 878                         type = NL80211_TX_POWER_FIXED;
 879                         /* TODO: do regulatory check! */
 880                 } else {
 881                         /*
 882                          * Automatic power level setting, max being the value
 883                          * passed in from userland.
 884                          */
 885                         if (data->txpower.value < 0) {
 886                                 type = NL80211_TX_POWER_AUTOMATIC;
 887                         } else {
 888                                 dbm = data->txpower.value;
 889                                 type = NL80211_TX_POWER_LIMITED;
 890                         }
 891                 }
 892         } else {
 893                 rfkill_set_sw_state(rdev->rfkill, true);
 894                 schedule_work(&rdev->rfkill_sync);
 895                 return 0;
 896         }
 897
 898         return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
 899 }
 900
 901 static int cfg80211_wext_giwtxpower(struct net_device *dev,
 902                                     struct iw_request_info *info,
 903                                     union iwreq_data *data, char *extra)
 904 {
 905         struct wireless_dev *wdev = dev->ieee80211_ptr;
 906         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 907         int err, val;
 908
 909         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 910                 return -EINVAL;
 911         if (data->txpower.flags & IW_TXPOW_RANGE)
 912                 return -EINVAL;
 913
 914         if (!rdev->ops->get_tx_power)
 915                 return -EOPNOTSUPP;
 916
 917         err = rdev_get_tx_power(rdev, wdev, &val);
 918         if (err)
 919                 return err;
 920
 921         /* well... oh well */
 922         data->txpower.fixed = 1;
 923         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 924         data->txpower.value = val;
 925         data->txpower.flags = IW_TXPOW_DBM;
 926
 927         return 0;
 928 }
 929
 930 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 931                                  s32 auth_alg)
 932 {
 933         int nr_alg = 0;
 934
 935         if (!auth_alg)
 936                 return -EINVAL;
 937
 938         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 939                          IW_AUTH_ALG_SHARED_KEY |
 940                          IW_AUTH_ALG_LEAP))
 941                 return -EINVAL;
 942
 943         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 944                 nr_alg++;
 945                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 946         }
 947
 948         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 949                 nr_alg++;
 950                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 951         }
 952
 953         if (auth_alg & IW_AUTH_ALG_LEAP) {
 954                 nr_alg++;
 955                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 956         }
 957
 958         if (nr_alg > 1)
 959                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 960
 961         return 0;
 962 }
 963
 964 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 965 {
 966         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 967                              IW_AUTH_WPA_VERSION_WPA2|
 968                              IW_AUTH_WPA_VERSION_DISABLED))
 969                 return -EINVAL;
 970
 971         if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
 972             (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
 973                              IW_AUTH_WPA_VERSION_WPA2)))
 974                 return -EINVAL;
 975
 976         if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
 977                 wdev->wext.connect.crypto.wpa_versions &=
 978                         ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
 979
 980         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 981                 wdev->wext.connect.crypto.wpa_versions |=
 982                         NL80211_WPA_VERSION_1;
 983
 984         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 985                 wdev->wext.connect.crypto.wpa_versions |=
 986                         NL80211_WPA_VERSION_2;
 987
 988         return 0;
 989 }
 990
 991 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 992 {
 993         if (cipher & IW_AUTH_CIPHER_WEP40)
 994                 wdev->wext.connect.crypto.cipher_group =
 995                         WLAN_CIPHER_SUITE_WEP40;
 996         else if (cipher & IW_AUTH_CIPHER_WEP104)
 997                 wdev->wext.connect.crypto.cipher_group =
 998                         WLAN_CIPHER_SUITE_WEP104;
 999         else if (cipher & IW_AUTH_CIPHER_TKIP)
1000                 wdev->wext.connect.crypto.cipher_group =
1001                         WLAN_CIPHER_SUITE_TKIP;
1002         else if (cipher & IW_AUTH_CIPHER_CCMP)
1003                 wdev->wext.connect.crypto.cipher_group =
1004                         WLAN_CIPHER_SUITE_CCMP;
1005         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
1006                 wdev->wext.connect.crypto.cipher_group =
1007                         WLAN_CIPHER_SUITE_AES_CMAC;
1008         else if (cipher & IW_AUTH_CIPHER_NONE)
1009                 wdev->wext.connect.crypto.cipher_group = 0;
1010         else
1011                 return -EINVAL;
1012
1013         return 0;
1014 }
1015
1016 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
1017 {
1018         int nr_ciphers = 0;
1019         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
1020
1021         if (cipher & IW_AUTH_CIPHER_WEP40) {
1022                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1023                 nr_ciphers++;
1024         }
1025
1026         if (cipher & IW_AUTH_CIPHER_WEP104) {
1027                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1028                 nr_ciphers++;
1029         }
1030
1031         if (cipher & IW_AUTH_CIPHER_TKIP) {
1032                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1033                 nr_ciphers++;
1034         }
1035
1036         if (cipher & IW_AUTH_CIPHER_CCMP) {
1037                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1038                 nr_ciphers++;
1039         }
1040
1041         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1042                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1043                 nr_ciphers++;
1044         }
1045
1046         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1047
1048         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1049
1050         return 0;
1051 }
1052
1053
1054 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1055 {
1056         int nr_akm_suites = 0;
1057
1058         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1059                         IW_AUTH_KEY_MGMT_PSK))
1060                 return -EINVAL;
1061
1062         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1063                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1064                         WLAN_AKM_SUITE_8021X;
1065                 nr_akm_suites++;
1066         }
1067
1068         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1069                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1070                         WLAN_AKM_SUITE_PSK;
1071                 nr_akm_suites++;
1072         }
1073
1074         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1075
1076         return 0;
1077 }
1078
1079 static int cfg80211_wext_siwauth(struct net_device *dev,
1080                                  struct iw_request_info *info,
1081                                  struct iw_param *data, char *extra)
1082 {
1083         struct wireless_dev *wdev = dev->ieee80211_ptr;
1084
1085         if (wdev->iftype != NL80211_IFTYPE_STATION)
1086                 return -EOPNOTSUPP;
1087
1088         switch (data->flags & IW_AUTH_INDEX) {
1089         case IW_AUTH_PRIVACY_INVOKED:
1090                 wdev->wext.connect.privacy = data->value;
1091                 return 0;
1092         case IW_AUTH_WPA_VERSION:
1093                 return cfg80211_set_wpa_version(wdev, data->value);
1094         case IW_AUTH_CIPHER_GROUP:
1095                 return cfg80211_set_cipher_group(wdev, data->value);
1096         case IW_AUTH_KEY_MGMT:
1097                 return cfg80211_set_key_mgt(wdev, data->value);
1098         case IW_AUTH_CIPHER_PAIRWISE:
1099                 return cfg80211_set_cipher_pairwise(wdev, data->value);
1100         case IW_AUTH_80211_AUTH_ALG:
1101                 return cfg80211_set_auth_alg(wdev, data->value);
1102         case IW_AUTH_WPA_ENABLED:
1103         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1104         case IW_AUTH_DROP_UNENCRYPTED:
1105         case IW_AUTH_MFP:
1106                 return 0;
1107         default:
1108                 return -EOPNOTSUPP;
1109         }
1110 }
1111
1112 static int cfg80211_wext_giwauth(struct net_device *dev,
1113                                  struct iw_request_info *info,
1114                                  struct iw_param *data, char *extra)
1115 {
1116         /* XXX: what do we need? */
1117
1118         return -EOPNOTSUPP;
1119 }
1120
1121 static int cfg80211_wext_siwpower(struct net_device *dev,
1122                                   struct iw_request_info *info,
1123                                   struct iw_param *wrq, char *extra)
1124 {
1125         struct wireless_dev *wdev = dev->ieee80211_ptr;
1126         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1127         bool ps = wdev->ps;
1128         int timeout = wdev->ps_timeout;
1129         int err;
1130
1131         if (wdev->iftype != NL80211_IFTYPE_STATION)
1132                 return -EINVAL;
1133
1134         if (!rdev->ops->set_power_mgmt)
1135                 return -EOPNOTSUPP;
1136
1137         if (wrq->disabled) {
1138                 ps = false;
1139         } else {
1140                 switch (wrq->flags & IW_POWER_MODE) {
1141                 case IW_POWER_ON:       /* If not specified */
1142                 case IW_POWER_MODE:     /* If set all mask */
1143                 case IW_POWER_ALL_R:    /* If explicitely state all */
1144                         ps = true;
1145                         break;
1146                 default:                /* Otherwise we ignore */
1147                         return -EINVAL;
1148                 }
1149
1150                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1151                         return -EINVAL;
1152
1153                 if (wrq->flags & IW_POWER_TIMEOUT)
1154                         timeout = wrq->value / 1000;
1155         }
1156
1157         err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1158         if (err)
1159                 return err;
1160
1161         wdev->ps = ps;
1162         wdev->ps_timeout = timeout;
1163
1164         return 0;
1165
1166 }
1167
1168 static int cfg80211_wext_giwpower(struct net_device *dev,
1169                                   struct iw_request_info *info,
1170                                   struct iw_param *wrq, char *extra)
1171 {
1172         struct wireless_dev *wdev = dev->ieee80211_ptr;
1173
1174         wrq->disabled = !wdev->ps;
1175
1176         return 0;
1177 }
1178
1179 static int cfg80211_wds_wext_siwap(struct net_device *dev,
1180                                    struct iw_request_info *info,
1181                                    struct sockaddr *addr, char *extra)
1182 {
1183         struct wireless_dev *wdev = dev->ieee80211_ptr;
1184         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1185         int err;
1186
1187         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1188                 return -EINVAL;
1189
1190         if (addr->sa_family != ARPHRD_ETHER)
1191                 return -EINVAL;
1192
1193         if (netif_running(dev))
1194                 return -EBUSY;
1195
1196         if (!rdev->ops->set_wds_peer)
1197                 return -EOPNOTSUPP;
1198
1199         err = rdev_set_wds_peer(rdev, dev, (u8 *)&addr->sa_data);
1200         if (err)
1201                 return err;
1202
1203         memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1204
1205         return 0;
1206 }
1207
1208 static int cfg80211_wds_wext_giwap(struct net_device *dev,
1209                                    struct iw_request_info *info,
1210                                    struct sockaddr *addr, char *extra)
1211 {
1212         struct wireless_dev *wdev = dev->ieee80211_ptr;
1213
1214         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1215                 return -EINVAL;
1216
1217         addr->sa_family = ARPHRD_ETHER;
1218         memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1219
1220         return 0;
1221 }
1222
1223 static int cfg80211_wext_siwrate(struct net_device *dev,
1224                                  struct iw_request_info *info,
1225                                  struct iw_param *rate, char *extra)
1226 {
1227         struct wireless_dev *wdev = dev->ieee80211_ptr;
1228         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1229         struct cfg80211_bitrate_mask mask;
1230         u32 fixed, maxrate;
1231         struct ieee80211_supported_band *sband;
1232         int band, ridx;
1233         bool match = false;
1234
1235         if (!rdev->ops->set_bitrate_mask)
1236                 return -EOPNOTSUPP;
1237
1238         memset(&mask, 0, sizeof(mask));
1239         fixed = 0;
1240         maxrate = (u32)-1;
1241
1242         if (rate->value < 0) {
1243                 /* nothing */
1244         } else if (rate->fixed) {
1245                 fixed = rate->value / 100000;
1246         } else {
1247                 maxrate = rate->value / 100000;
1248         }
1249
1250         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1251                 sband = wdev->wiphy->bands[band];
1252                 if (sband == NULL)
1253                         continue;
1254                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1255                         struct ieee80211_rate *srate = &sband->bitrates[ridx];
1256                         if (fixed == srate->bitrate) {
1257                                 mask.control[band].legacy = 1 << ridx;
1258                                 match = true;
1259                                 break;
1260                         }
1261                         if (srate->bitrate <= maxrate) {
1262                                 mask.control[band].legacy |= 1 << ridx;
1263                                 match = true;
1264                         }
1265                 }
1266         }
1267
1268         if (!match)
1269                 return -EINVAL;
1270
1271         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1272 }
1273
1274 static int cfg80211_wext_giwrate(struct net_device *dev,
1275                                  struct iw_request_info *info,
1276                                  struct iw_param *rate, char *extra)
1277 {
1278         struct wireless_dev *wdev = dev->ieee80211_ptr;
1279         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1280         /* we are under RTNL - globally locked - so can use a static struct */
1281         static struct station_info sinfo;
1282         u8 addr[ETH_ALEN];
1283         int err;
1284
1285         if (wdev->iftype != NL80211_IFTYPE_STATION)
1286                 return -EOPNOTSUPP;
1287
1288         if (!rdev->ops->get_station)
1289                 return -EOPNOTSUPP;
1290
1291         err = 0;
1292         wdev_lock(wdev);
1293         if (wdev->current_bss)
1294                 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1295         else
1296                 err = -EOPNOTSUPP;
1297         wdev_unlock(wdev);
1298         if (err)
1299                 return err;
1300
1301         err = rdev_get_station(rdev, dev, addr, &sinfo);
1302         if (err)
1303                 return err;
1304
1305         if (!(sinfo.filled & STATION_INFO_TX_BITRATE))
1306                 return -EOPNOTSUPP;
1307
1308         rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1309
1310         return 0;
1311 }
1312
1313 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1314 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1315 {
1316         struct wireless_dev *wdev = dev->ieee80211_ptr;
1317         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1318         /* we are under RTNL - globally locked - so can use static structs */
1319         static struct iw_statistics wstats;
1320         static struct station_info sinfo;
1321         u8 bssid[ETH_ALEN];
1322
1323         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1324                 return NULL;
1325
1326         if (!rdev->ops->get_station)
1327                 return NULL;
1328
1329         /* Grab BSSID of current BSS, if any */
1330         wdev_lock(wdev);
1331         if (!wdev->current_bss) {
1332                 wdev_unlock(wdev);
1333                 return NULL;
1334         }
1335         memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1336         wdev_unlock(wdev);
1337
1338         if (rdev_get_station(rdev, dev, bssid, &sinfo))
1339                 return NULL;
1340
1341         memset(&wstats, 0, sizeof(wstats));
1342
1343         switch (rdev->wiphy.signal_type) {
1344         case CFG80211_SIGNAL_TYPE_MBM:
1345                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1346                         int sig = sinfo.signal;
1347                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1348                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1349                         wstats.qual.updated |= IW_QUAL_DBM;
1350                         wstats.qual.level = sig;
1351                         if (sig < -110)
1352                                 sig = -110;
1353                         else if (sig > -40)
1354                                 sig = -40;
1355                         wstats.qual.qual = sig + 110;
1356                         break;
1357                 }
1358         case CFG80211_SIGNAL_TYPE_UNSPEC:
1359                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1360                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1361                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1362                         wstats.qual.level = sinfo.signal;
1363                         wstats.qual.qual = sinfo.signal;
1364                         break;
1365                 }
1366         default:
1367                 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1368                 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1369         }
1370
1371         wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1372         if (sinfo.filled & STATION_INFO_RX_DROP_MISC)
1373                 wstats.discard.misc = sinfo.rx_dropped_misc;
1374         if (sinfo.filled & STATION_INFO_TX_FAILED)
1375                 wstats.discard.retries = sinfo.tx_failed;
1376
1377         return &wstats;
1378 }
1379
1380 static int cfg80211_wext_siwap(struct net_device *dev,
1381                                struct iw_request_info *info,
1382                                struct sockaddr *ap_addr, char *extra)
1383 {
1384         struct wireless_dev *wdev = dev->ieee80211_ptr;
1385
1386         switch (wdev->iftype) {
1387         case NL80211_IFTYPE_ADHOC:
1388                 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1389         case NL80211_IFTYPE_STATION:
1390                 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1391         case NL80211_IFTYPE_WDS:
1392                 return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1393         default:
1394                 return -EOPNOTSUPP;
1395         }
1396 }
1397
1398 static int cfg80211_wext_giwap(struct net_device *dev,
1399                                struct iw_request_info *info,
1400                                struct sockaddr *ap_addr, char *extra)
1401 {
1402         struct wireless_dev *wdev = dev->ieee80211_ptr;
1403
1404         switch (wdev->iftype) {
1405         case NL80211_IFTYPE_ADHOC:
1406                 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1407         case NL80211_IFTYPE_STATION:
1408                 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1409         case NL80211_IFTYPE_WDS:
1410                 return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1411         default:
1412                 return -EOPNOTSUPP;
1413         }
1414 }
1415
1416 static int cfg80211_wext_siwessid(struct net_device *dev,
1417                                   struct iw_request_info *info,
1418                                   struct iw_point *data, char *ssid)
1419 {
1420         struct wireless_dev *wdev = dev->ieee80211_ptr;
1421
1422         switch (wdev->iftype) {
1423         case NL80211_IFTYPE_ADHOC:
1424                 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1425         case NL80211_IFTYPE_STATION:
1426                 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1427         default:
1428                 return -EOPNOTSUPP;
1429         }
1430 }
1431
1432 static int cfg80211_wext_giwessid(struct net_device *dev,
1433                                   struct iw_request_info *info,
1434                                   struct iw_point *data, char *ssid)
1435 {
1436         struct wireless_dev *wdev = dev->ieee80211_ptr;
1437
1438         data->flags = 0;
1439         data->length = 0;
1440
1441         switch (wdev->iftype) {
1442         case NL80211_IFTYPE_ADHOC:
1443                 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1444         case NL80211_IFTYPE_STATION:
1445                 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1446         default:
1447                 return -EOPNOTSUPP;
1448         }
1449 }
1450
1451 static int cfg80211_wext_siwpmksa(struct net_device *dev,
1452                                   struct iw_request_info *info,
1453                                   struct iw_point *data, char *extra)
1454 {
1455         struct wireless_dev *wdev = dev->ieee80211_ptr;
1456         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1457         struct cfg80211_pmksa cfg_pmksa;
1458         struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1459
1460         memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1461
1462         if (wdev->iftype != NL80211_IFTYPE_STATION)
1463                 return -EINVAL;
1464
1465         cfg_pmksa.bssid = pmksa->bssid.sa_data;
1466         cfg_pmksa.pmkid = pmksa->pmkid;
1467
1468         switch (pmksa->cmd) {
1469         case IW_PMKSA_ADD:
1470                 if (!rdev->ops->set_pmksa)
1471                         return -EOPNOTSUPP;
1472
1473                 return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1474
1475         case IW_PMKSA_REMOVE:
1476                 if (!rdev->ops->del_pmksa)
1477                         return -EOPNOTSUPP;
1478
1479                 return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1480
1481         case IW_PMKSA_FLUSH:
1482                 if (!rdev->ops->flush_pmksa)
1483                         return -EOPNOTSUPP;
1484
1485                 return rdev_flush_pmksa(rdev, dev);
1486
1487         default:
1488                 return -EOPNOTSUPP;
1489         }
1490 }
1491
1492 static const iw_handler cfg80211_handlers[] = {
1493         [IW_IOCTL_IDX(SIOCGIWNAME)]     = (iw_handler) cfg80211_wext_giwname,
1494         [IW_IOCTL_IDX(SIOCSIWFREQ)]     = (iw_handler) cfg80211_wext_siwfreq,
1495         [IW_IOCTL_IDX(SIOCGIWFREQ)]     = (iw_handler) cfg80211_wext_giwfreq,
1496         [IW_IOCTL_IDX(SIOCSIWMODE)]     = (iw_handler) cfg80211_wext_siwmode,
1497         [IW_IOCTL_IDX(SIOCGIWMODE)]     = (iw_handler) cfg80211_wext_giwmode,
1498         [IW_IOCTL_IDX(SIOCGIWRANGE)]    = (iw_handler) cfg80211_wext_giwrange,
1499         [IW_IOCTL_IDX(SIOCSIWAP)]       = (iw_handler) cfg80211_wext_siwap,
1500         [IW_IOCTL_IDX(SIOCGIWAP)]       = (iw_handler) cfg80211_wext_giwap,
1501         [IW_IOCTL_IDX(SIOCSIWMLME)]     = (iw_handler) cfg80211_wext_siwmlme,
1502         [IW_IOCTL_IDX(SIOCSIWSCAN)]     = (iw_handler) cfg80211_wext_siwscan,
1503         [IW_IOCTL_IDX(SIOCGIWSCAN)]     = (iw_handler) cfg80211_wext_giwscan,
1504         [IW_IOCTL_IDX(SIOCSIWESSID)]    = (iw_handler) cfg80211_wext_siwessid,
1505         [IW_IOCTL_IDX(SIOCGIWESSID)]    = (iw_handler) cfg80211_wext_giwessid,
1506         [IW_IOCTL_IDX(SIOCSIWRATE)]     = (iw_handler) cfg80211_wext_siwrate,
1507         [IW_IOCTL_IDX(SIOCGIWRATE)]     = (iw_handler) cfg80211_wext_giwrate,
1508         [IW_IOCTL_IDX(SIOCSIWRTS)]      = (iw_handler) cfg80211_wext_siwrts,
1509         [IW_IOCTL_IDX(SIOCGIWRTS)]      = (iw_handler) cfg80211_wext_giwrts,
1510         [IW_IOCTL_IDX(SIOCSIWFRAG)]     = (iw_handler) cfg80211_wext_siwfrag,
1511         [IW_IOCTL_IDX(SIOCGIWFRAG)]     = (iw_handler) cfg80211_wext_giwfrag,
1512         [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = (iw_handler) cfg80211_wext_siwtxpower,
1513         [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = (iw_handler) cfg80211_wext_giwtxpower,
1514         [IW_IOCTL_IDX(SIOCSIWRETRY)]    = (iw_handler) cfg80211_wext_siwretry,
1515         [IW_IOCTL_IDX(SIOCGIWRETRY)]    = (iw_handler) cfg80211_wext_giwretry,
1516         [IW_IOCTL_IDX(SIOCSIWENCODE)]   = (iw_handler) cfg80211_wext_siwencode,
1517         [IW_IOCTL_IDX(SIOCGIWENCODE)]   = (iw_handler) cfg80211_wext_giwencode,
1518         [IW_IOCTL_IDX(SIOCSIWPOWER)]    = (iw_handler) cfg80211_wext_siwpower,
1519         [IW_IOCTL_IDX(SIOCGIWPOWER)]    = (iw_handler) cfg80211_wext_giwpower,
1520         [IW_IOCTL_IDX(SIOCSIWGENIE)]    = (iw_handler) cfg80211_wext_siwgenie,
1521         [IW_IOCTL_IDX(SIOCSIWAUTH)]     = (iw_handler) cfg80211_wext_siwauth,
1522         [IW_IOCTL_IDX(SIOCGIWAUTH)]     = (iw_handler) cfg80211_wext_giwauth,
1523         [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1524         [IW_IOCTL_IDX(SIOCSIWPMKSA)]    = (iw_handler) cfg80211_wext_siwpmksa,
1525 };
1526
1527 const struct iw_handler_def cfg80211_wext_handler = {
1528         .num_standard           = ARRAY_SIZE(cfg80211_handlers),
1529         .standard               = cfg80211_handlers,
1530         .get_wireless_stats = cfg80211_wireless_stats,
1531 };