linux/net/wireless/wext-compat.c
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   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
  24int cfg80211_wext_giwname(struct net_device *dev,
  25                          struct iw_request_info *info,
  26                          char *name, char *extra)
  27{
  28        strcpy(name, "IEEE 802.11");
  29        return 0;
  30}
  31EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
  32
  33int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  34                          u32 *mode, char *extra)
  35{
  36        struct wireless_dev *wdev = dev->ieee80211_ptr;
  37        struct cfg80211_registered_device *rdev;
  38        struct vif_params vifparams;
  39        enum nl80211_iftype type;
  40
  41        rdev = wiphy_to_rdev(wdev->wiphy);
  42
  43        switch (*mode) {
  44        case IW_MODE_INFRA:
  45                type = NL80211_IFTYPE_STATION;
  46                break;
  47        case IW_MODE_ADHOC:
  48                type = NL80211_IFTYPE_ADHOC;
  49                break;
  50        case IW_MODE_REPEAT:
  51                type = NL80211_IFTYPE_WDS;
  52                break;
  53        case IW_MODE_MONITOR:
  54                type = NL80211_IFTYPE_MONITOR;
  55                break;
  56        default:
  57                return -EINVAL;
  58        }
  59
  60        if (type == wdev->iftype)
  61                return 0;
  62
  63        memset(&vifparams, 0, sizeof(vifparams));
  64
  65        return cfg80211_change_iface(rdev, dev, type, NULL, &vifparams);
  66}
  67EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
  68
  69int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
  70                          u32 *mode, char *extra)
  71{
  72        struct wireless_dev *wdev = dev->ieee80211_ptr;
  73
  74        if (!wdev)
  75                return -EOPNOTSUPP;
  76
  77        switch (wdev->iftype) {
  78        case NL80211_IFTYPE_AP:
  79                *mode = IW_MODE_MASTER;
  80                break;
  81        case NL80211_IFTYPE_STATION:
  82                *mode = IW_MODE_INFRA;
  83                break;
  84        case NL80211_IFTYPE_ADHOC:
  85                *mode = IW_MODE_ADHOC;
  86                break;
  87        case NL80211_IFTYPE_MONITOR:
  88                *mode = IW_MODE_MONITOR;
  89                break;
  90        case NL80211_IFTYPE_WDS:
  91                *mode = IW_MODE_REPEAT;
  92                break;
  93        case NL80211_IFTYPE_AP_VLAN:
  94                *mode = IW_MODE_SECOND;         /* FIXME */
  95                break;
  96        default:
  97                *mode = IW_MODE_AUTO;
  98                break;
  99        }
 100        return 0;
 101}
 102EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
 103
 104
 105int cfg80211_wext_giwrange(struct net_device *dev,
 106                           struct iw_request_info *info,
 107                           struct iw_point *data, char *extra)
 108{
 109        struct wireless_dev *wdev = dev->ieee80211_ptr;
 110        struct iw_range *range = (struct iw_range *) extra;
 111        enum nl80211_band band;
 112        int i, c = 0;
 113
 114        if (!wdev)
 115                return -EOPNOTSUPP;
 116
 117        data->length = sizeof(struct iw_range);
 118        memset(range, 0, sizeof(struct iw_range));
 119
 120        range->we_version_compiled = WIRELESS_EXT;
 121        range->we_version_source = 21;
 122        range->retry_capa = IW_RETRY_LIMIT;
 123        range->retry_flags = IW_RETRY_LIMIT;
 124        range->min_retry = 0;
 125        range->max_retry = 255;
 126        range->min_rts = 0;
 127        range->max_rts = 2347;
 128        range->min_frag = 256;
 129        range->max_frag = 2346;
 130
 131        range->max_encoding_tokens = 4;
 132
 133        range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 134
 135        switch (wdev->wiphy->signal_type) {
 136        case CFG80211_SIGNAL_TYPE_NONE:
 137                break;
 138        case CFG80211_SIGNAL_TYPE_MBM:
 139                range->max_qual.level = (u8)-110;
 140                range->max_qual.qual = 70;
 141                range->avg_qual.qual = 35;
 142                range->max_qual.updated |= IW_QUAL_DBM;
 143                range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 144                range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 145                break;
 146        case CFG80211_SIGNAL_TYPE_UNSPEC:
 147                range->max_qual.level = 100;
 148                range->max_qual.qual = 100;
 149                range->avg_qual.qual = 50;
 150                range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 151                range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 152                break;
 153        }
 154
 155        range->avg_qual.level = range->max_qual.level / 2;
 156        range->avg_qual.noise = range->max_qual.noise / 2;
 157        range->avg_qual.updated = range->max_qual.updated;
 158
 159        for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 160                switch (wdev->wiphy->cipher_suites[i]) {
 161                case WLAN_CIPHER_SUITE_TKIP:
 162                        range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 163                                            IW_ENC_CAPA_WPA);
 164                        break;
 165
 166                case WLAN_CIPHER_SUITE_CCMP:
 167                        range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 168                                            IW_ENC_CAPA_WPA2);
 169                        break;
 170
 171                case WLAN_CIPHER_SUITE_WEP40:
 172                        range->encoding_size[range->num_encoding_sizes++] =
 173                                WLAN_KEY_LEN_WEP40;
 174                        break;
 175
 176                case WLAN_CIPHER_SUITE_WEP104:
 177                        range->encoding_size[range->num_encoding_sizes++] =
 178                                WLAN_KEY_LEN_WEP104;
 179                        break;
 180                }
 181        }
 182
 183        for (band = 0; band < NUM_NL80211_BANDS; band ++) {
 184                struct ieee80211_supported_band *sband;
 185
 186                sband = wdev->wiphy->bands[band];
 187
 188                if (!sband)
 189                        continue;
 190
 191                for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 192                        struct ieee80211_channel *chan = &sband->channels[i];
 193
 194                        if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 195                                range->freq[c].i =
 196                                        ieee80211_frequency_to_channel(
 197                                                chan->center_freq);
 198                                range->freq[c].m = chan->center_freq;
 199                                range->freq[c].e = 6;
 200                                c++;
 201                        }
 202                }
 203        }
 204        range->num_channels = c;
 205        range->num_frequency = c;
 206
 207        IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 208        IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 209        IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 210
 211        if (wdev->wiphy->max_scan_ssids > 0)
 212                range->scan_capa |= IW_SCAN_CAPA_ESSID;
 213
 214        return 0;
 215}
 216EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
 217
 218
 219/**
 220 * cfg80211_wext_freq - get wext frequency for non-"auto"
 221 * @dev: the net device
 222 * @freq: the wext freq encoding
 223 *
 224 * Returns a frequency, or a negative error code, or 0 for auto.
 225 */
 226int cfg80211_wext_freq(struct iw_freq *freq)
 227{
 228        /*
 229         * Parse frequency - return 0 for auto and
 230         * -EINVAL for impossible things.
 231         */
 232        if (freq->e == 0) {
 233                enum nl80211_band band = NL80211_BAND_2GHZ;
 234                if (freq->m < 0)
 235                        return 0;
 236                if (freq->m > 14)
 237                        band = NL80211_BAND_5GHZ;
 238                return ieee80211_channel_to_frequency(freq->m, band);
 239        } else {
 240                int i, div = 1000000;
 241                for (i = 0; i < freq->e; i++)
 242                        div /= 10;
 243                if (div <= 0)
 244                        return -EINVAL;
 245                return freq->m / div;
 246        }
 247}
 248
 249int cfg80211_wext_siwrts(struct net_device *dev,
 250                         struct iw_request_info *info,
 251                         struct iw_param *rts, char *extra)
 252{
 253        struct wireless_dev *wdev = dev->ieee80211_ptr;
 254        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 255        u32 orts = wdev->wiphy->rts_threshold;
 256        int err;
 257
 258        if (rts->disabled || !rts->fixed)
 259                wdev->wiphy->rts_threshold = (u32) -1;
 260        else if (rts->value < 0)
 261                return -EINVAL;
 262        else
 263                wdev->wiphy->rts_threshold = rts->value;
 264
 265        err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
 266        if (err)
 267                wdev->wiphy->rts_threshold = orts;
 268
 269        return err;
 270}
 271EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
 272
 273int cfg80211_wext_giwrts(struct net_device *dev,
 274                         struct iw_request_info *info,
 275                         struct iw_param *rts, char *extra)
 276{
 277        struct wireless_dev *wdev = dev->ieee80211_ptr;
 278
 279        rts->value = wdev->wiphy->rts_threshold;
 280        rts->disabled = rts->value == (u32) -1;
 281        rts->fixed = 1;
 282
 283        return 0;
 284}
 285EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
 286
 287int cfg80211_wext_siwfrag(struct net_device *dev,
 288                          struct iw_request_info *info,
 289                          struct iw_param *frag, char *extra)
 290{
 291        struct wireless_dev *wdev = dev->ieee80211_ptr;
 292        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 293        u32 ofrag = wdev->wiphy->frag_threshold;
 294        int err;
 295
 296        if (frag->disabled || !frag->fixed)
 297                wdev->wiphy->frag_threshold = (u32) -1;
 298        else if (frag->value < 256)
 299                return -EINVAL;
 300        else {
 301                /* Fragment length must be even, so strip LSB. */
 302                wdev->wiphy->frag_threshold = frag->value & ~0x1;
 303        }
 304
 305        err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
 306        if (err)
 307                wdev->wiphy->frag_threshold = ofrag;
 308
 309        return err;
 310}
 311EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
 312
 313int cfg80211_wext_giwfrag(struct net_device *dev,
 314                          struct iw_request_info *info,
 315                          struct iw_param *frag, char *extra)
 316{
 317        struct wireless_dev *wdev = dev->ieee80211_ptr;
 318
 319        frag->value = wdev->wiphy->frag_threshold;
 320        frag->disabled = frag->value == (u32) -1;
 321        frag->fixed = 1;
 322
 323        return 0;
 324}
 325EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
 326
 327static int cfg80211_wext_siwretry(struct net_device *dev,
 328                                  struct iw_request_info *info,
 329                                  struct iw_param *retry, char *extra)
 330{
 331        struct wireless_dev *wdev = dev->ieee80211_ptr;
 332        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 333        u32 changed = 0;
 334        u8 olong = wdev->wiphy->retry_long;
 335        u8 oshort = wdev->wiphy->retry_short;
 336        int err;
 337
 338        if (retry->disabled || retry->value < 1 || retry->value > 255 ||
 339            (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 340                return -EINVAL;
 341
 342        if (retry->flags & IW_RETRY_LONG) {
 343                wdev->wiphy->retry_long = retry->value;
 344                changed |= WIPHY_PARAM_RETRY_LONG;
 345        } else if (retry->flags & IW_RETRY_SHORT) {
 346                wdev->wiphy->retry_short = retry->value;
 347                changed |= WIPHY_PARAM_RETRY_SHORT;
 348        } else {
 349                wdev->wiphy->retry_short = retry->value;
 350                wdev->wiphy->retry_long = retry->value;
 351                changed |= WIPHY_PARAM_RETRY_LONG;
 352                changed |= WIPHY_PARAM_RETRY_SHORT;
 353        }
 354
 355        if (!changed)
 356                return 0;
 357
 358        err = rdev_set_wiphy_params(rdev, changed);
 359        if (err) {
 360                wdev->wiphy->retry_short = oshort;
 361                wdev->wiphy->retry_long = olong;
 362        }
 363
 364        return err;
 365}
 366
 367int cfg80211_wext_giwretry(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
 373        retry->disabled = 0;
 374
 375        if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 376                /*
 377                 * First return short value, iwconfig will ask long value
 378                 * later if needed
 379                 */
 380                retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
 381                retry->value = wdev->wiphy->retry_short;
 382                if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
 383                        retry->flags |= IW_RETRY_LONG;
 384
 385                return 0;
 386        }
 387
 388        if (retry->flags & IW_RETRY_LONG) {
 389                retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 390                retry->value = wdev->wiphy->retry_long;
 391        }
 392
 393        return 0;
 394}
 395EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
 396
 397static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 398                                     struct net_device *dev, bool pairwise,
 399                                     const u8 *addr, bool remove, bool tx_key,
 400                                     int idx, struct key_params *params)
 401{
 402        struct wireless_dev *wdev = dev->ieee80211_ptr;
 403        int err, i;
 404        bool rejoin = false;
 405
 406        if (pairwise && !addr)
 407                return -EINVAL;
 408
 409        /*
 410         * In many cases we won't actually need this, but it's better
 411         * to do it first in case the allocation fails. Don't use wext.
 412         */
 413        if (!wdev->wext.keys) {
 414                wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 415                                          GFP_KERNEL);
 416                if (!wdev->wext.keys)
 417                        return -ENOMEM;
 418                for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
 419                        wdev->wext.keys->params[i].key =
 420                                wdev->wext.keys->data[i];
 421        }
 422
 423        if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 424            wdev->iftype != NL80211_IFTYPE_STATION)
 425                return -EOPNOTSUPP;
 426
 427        if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 428                if (!wdev->current_bss)
 429                        return -ENOLINK;
 430
 431                if (!rdev->ops->set_default_mgmt_key)
 432                        return -EOPNOTSUPP;
 433
 434                if (idx < 4 || idx > 5)
 435                        return -EINVAL;
 436        } else if (idx < 0 || idx > 3)
 437                return -EINVAL;
 438
 439        if (remove) {
 440                err = 0;
 441                if (wdev->current_bss) {
 442                        /*
 443                         * If removing the current TX key, we will need to
 444                         * join a new IBSS without the privacy bit clear.
 445                         */
 446                        if (idx == wdev->wext.default_key &&
 447                            wdev->iftype == NL80211_IFTYPE_ADHOC) {
 448                                __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 449                                rejoin = true;
 450                        }
 451
 452                        if (!pairwise && addr &&
 453                            !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
 454                                err = -ENOENT;
 455                        else
 456                                err = rdev_del_key(rdev, dev, idx, pairwise,
 457                                                   addr);
 458                }
 459                wdev->wext.connect.privacy = false;
 460                /*
 461                 * Applications using wireless extensions expect to be
 462                 * able to delete keys that don't exist, so allow that.
 463                 */
 464                if (err == -ENOENT)
 465                        err = 0;
 466                if (!err) {
 467                        if (!addr && idx < 4) {
 468                                memset(wdev->wext.keys->data[idx], 0,
 469                                       sizeof(wdev->wext.keys->data[idx]));
 470                                wdev->wext.keys->params[idx].key_len = 0;
 471                                wdev->wext.keys->params[idx].cipher = 0;
 472                        }
 473                        if (idx == wdev->wext.default_key)
 474                                wdev->wext.default_key = -1;
 475                        else if (idx == wdev->wext.default_mgmt_key)
 476                                wdev->wext.default_mgmt_key = -1;
 477                }
 478
 479                if (!err && rejoin)
 480                        err = cfg80211_ibss_wext_join(rdev, wdev);
 481
 482                return err;
 483        }
 484
 485        if (addr)
 486                tx_key = false;
 487
 488        if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
 489                return -EINVAL;
 490
 491        err = 0;
 492        if (wdev->current_bss)
 493                err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
 494        else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
 495                 params->cipher != WLAN_CIPHER_SUITE_WEP104)
 496                return -EINVAL;
 497        if (err)
 498                return err;
 499
 500        /*
 501         * We only need to store WEP keys, since they're the only keys that
 502         * can be be set before a connection is established and persist after
 503         * disconnecting.
 504         */
 505        if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 506                      params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 507                wdev->wext.keys->params[idx] = *params;
 508                memcpy(wdev->wext.keys->data[idx],
 509                        params->key, params->key_len);
 510                wdev->wext.keys->params[idx].key =
 511                        wdev->wext.keys->data[idx];
 512        }
 513
 514        if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 515             params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 516            (tx_key || (!addr && wdev->wext.default_key == -1))) {
 517                if (wdev->current_bss) {
 518                        /*
 519                         * If we are getting a new TX key from not having
 520                         * had one before we need to join a new IBSS with
 521                         * the privacy bit set.
 522                         */
 523                        if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 524                            wdev->wext.default_key == -1) {
 525                                __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 526                                rejoin = true;
 527                        }
 528                        err = rdev_set_default_key(rdev, dev, idx, true, true);
 529                }
 530                if (!err) {
 531                        wdev->wext.default_key = idx;
 532                        if (rejoin)
 533                                err = cfg80211_ibss_wext_join(rdev, wdev);
 534                }
 535                return err;
 536        }
 537
 538        if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 539            (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 540                if (wdev->current_bss)
 541                        err = rdev_set_default_mgmt_key(rdev, dev, idx);
 542                if (!err)
 543                        wdev->wext.default_mgmt_key = idx;
 544                return err;
 545        }
 546
 547        return 0;
 548}
 549
 550static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 551                                   struct net_device *dev, bool pairwise,
 552                                   const u8 *addr, bool remove, bool tx_key,
 553                                   int idx, struct key_params *params)
 554{
 555        int err;
 556
 557        wdev_lock(dev->ieee80211_ptr);
 558        err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
 559                                        remove, tx_key, idx, params);
 560        wdev_unlock(dev->ieee80211_ptr);
 561
 562        return err;
 563}
 564
 565static int cfg80211_wext_siwencode(struct net_device *dev,
 566                                   struct iw_request_info *info,
 567                                   struct iw_point *erq, char *keybuf)
 568{
 569        struct wireless_dev *wdev = dev->ieee80211_ptr;
 570        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 571        int idx, err;
 572        bool remove = false;
 573        struct key_params params;
 574
 575        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 576            wdev->iftype != NL80211_IFTYPE_ADHOC)
 577                return -EOPNOTSUPP;
 578
 579        /* no use -- only MFP (set_default_mgmt_key) is optional */
 580        if (!rdev->ops->del_key ||
 581            !rdev->ops->add_key ||
 582            !rdev->ops->set_default_key)
 583                return -EOPNOTSUPP;
 584
 585        idx = erq->flags & IW_ENCODE_INDEX;
 586        if (idx == 0) {
 587                idx = wdev->wext.default_key;
 588                if (idx < 0)
 589                        idx = 0;
 590        } else if (idx < 1 || idx > 4)
 591                return -EINVAL;
 592        else
 593                idx--;
 594
 595        if (erq->flags & IW_ENCODE_DISABLED)
 596                remove = true;
 597        else if (erq->length == 0) {
 598                /* No key data - just set the default TX key index */
 599                err = 0;
 600                wdev_lock(wdev);
 601                if (wdev->current_bss)
 602                        err = rdev_set_default_key(rdev, dev, idx, true,
 603                                                   true);
 604                if (!err)
 605                        wdev->wext.default_key = idx;
 606                wdev_unlock(wdev);
 607                return err;
 608        }
 609
 610        memset(&params, 0, sizeof(params));
 611        params.key = keybuf;
 612        params.key_len = erq->length;
 613        if (erq->length == 5)
 614                params.cipher = WLAN_CIPHER_SUITE_WEP40;
 615        else if (erq->length == 13)
 616                params.cipher = WLAN_CIPHER_SUITE_WEP104;
 617        else if (!remove)
 618                return -EINVAL;
 619
 620        return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
 621                                       wdev->wext.default_key == -1,
 622                                       idx, &params);
 623}
 624
 625static int cfg80211_wext_siwencodeext(struct net_device *dev,
 626                                      struct iw_request_info *info,
 627                                      struct iw_point *erq, char *extra)
 628{
 629        struct wireless_dev *wdev = dev->ieee80211_ptr;
 630        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 631        struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 632        const u8 *addr;
 633        int idx;
 634        bool remove = false;
 635        struct key_params params;
 636        u32 cipher;
 637
 638        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 639            wdev->iftype != NL80211_IFTYPE_ADHOC)
 640                return -EOPNOTSUPP;
 641
 642        /* no use -- only MFP (set_default_mgmt_key) is optional */
 643        if (!rdev->ops->del_key ||
 644            !rdev->ops->add_key ||
 645            !rdev->ops->set_default_key)
 646                return -EOPNOTSUPP;
 647
 648        switch (ext->alg) {
 649        case IW_ENCODE_ALG_NONE:
 650                remove = true;
 651                cipher = 0;
 652                break;
 653        case IW_ENCODE_ALG_WEP:
 654                if (ext->key_len == 5)
 655                        cipher = WLAN_CIPHER_SUITE_WEP40;
 656                else if (ext->key_len == 13)
 657                        cipher = WLAN_CIPHER_SUITE_WEP104;
 658                else
 659                        return -EINVAL;
 660                break;
 661        case IW_ENCODE_ALG_TKIP:
 662                cipher = WLAN_CIPHER_SUITE_TKIP;
 663                break;
 664        case IW_ENCODE_ALG_CCMP:
 665                cipher = WLAN_CIPHER_SUITE_CCMP;
 666                break;
 667        case IW_ENCODE_ALG_AES_CMAC:
 668                cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 669                break;
 670        default:
 671                return -EOPNOTSUPP;
 672        }
 673
 674        if (erq->flags & IW_ENCODE_DISABLED)
 675                remove = true;
 676
 677        idx = erq->flags & IW_ENCODE_INDEX;
 678        if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 679                if (idx < 4 || idx > 5) {
 680                        idx = wdev->wext.default_mgmt_key;
 681                        if (idx < 0)
 682                                return -EINVAL;
 683                } else
 684                        idx--;
 685        } else {
 686                if (idx < 1 || idx > 4) {
 687                        idx = wdev->wext.default_key;
 688                        if (idx < 0)
 689                                return -EINVAL;
 690                } else
 691                        idx--;
 692        }
 693
 694        addr = ext->addr.sa_data;
 695        if (is_broadcast_ether_addr(addr))
 696                addr = NULL;
 697
 698        memset(&params, 0, sizeof(params));
 699        params.key = ext->key;
 700        params.key_len = ext->key_len;
 701        params.cipher = cipher;
 702
 703        if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 704                params.seq = ext->rx_seq;
 705                params.seq_len = 6;
 706        }
 707
 708        return cfg80211_set_encryption(
 709                        rdev, dev,
 710                        !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
 711                        addr, remove,
 712                        ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 713                        idx, &params);
 714}
 715
 716static int cfg80211_wext_giwencode(struct net_device *dev,
 717                                   struct iw_request_info *info,
 718                                   struct iw_point *erq, char *keybuf)
 719{
 720        struct wireless_dev *wdev = dev->ieee80211_ptr;
 721        int idx;
 722
 723        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 724            wdev->iftype != NL80211_IFTYPE_ADHOC)
 725                return -EOPNOTSUPP;
 726
 727        idx = erq->flags & IW_ENCODE_INDEX;
 728        if (idx == 0) {
 729                idx = wdev->wext.default_key;
 730                if (idx < 0)
 731                        idx = 0;
 732        } else if (idx < 1 || idx > 4)
 733                return -EINVAL;
 734        else
 735                idx--;
 736
 737        erq->flags = idx + 1;
 738
 739        if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 740                erq->flags |= IW_ENCODE_DISABLED;
 741                erq->length = 0;
 742                return 0;
 743        }
 744
 745        erq->length = min_t(size_t, erq->length,
 746                            wdev->wext.keys->params[idx].key_len);
 747        memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 748        erq->flags |= IW_ENCODE_ENABLED;
 749
 750        return 0;
 751}
 752
 753static int cfg80211_wext_siwfreq(struct net_device *dev,
 754                                 struct iw_request_info *info,
 755                                 struct iw_freq *wextfreq, char *extra)
 756{
 757        struct wireless_dev *wdev = dev->ieee80211_ptr;
 758        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 759        struct cfg80211_chan_def chandef = {
 760                .width = NL80211_CHAN_WIDTH_20_NOHT,
 761        };
 762        int freq;
 763
 764        switch (wdev->iftype) {
 765        case NL80211_IFTYPE_STATION:
 766                return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 767        case NL80211_IFTYPE_ADHOC:
 768                return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 769        case NL80211_IFTYPE_MONITOR:
 770                freq = cfg80211_wext_freq(wextfreq);
 771                if (freq < 0)
 772                        return freq;
 773                if (freq == 0)
 774                        return -EINVAL;
 775                chandef.center_freq1 = freq;
 776                chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 777                if (!chandef.chan)
 778                        return -EINVAL;
 779                return cfg80211_set_monitor_channel(rdev, &chandef);
 780        case NL80211_IFTYPE_MESH_POINT:
 781                freq = cfg80211_wext_freq(wextfreq);
 782                if (freq < 0)
 783                        return freq;
 784                if (freq == 0)
 785                        return -EINVAL;
 786                chandef.center_freq1 = freq;
 787                chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 788                if (!chandef.chan)
 789                        return -EINVAL;
 790                return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
 791        default:
 792                return -EOPNOTSUPP;
 793        }
 794}
 795
 796static int cfg80211_wext_giwfreq(struct net_device *dev,
 797                                 struct iw_request_info *info,
 798                                 struct iw_freq *freq, char *extra)
 799{
 800        struct wireless_dev *wdev = dev->ieee80211_ptr;
 801        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 802        struct cfg80211_chan_def chandef;
 803        int ret;
 804
 805        switch (wdev->iftype) {
 806        case NL80211_IFTYPE_STATION:
 807                return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 808        case NL80211_IFTYPE_ADHOC:
 809                return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 810        case NL80211_IFTYPE_MONITOR:
 811                if (!rdev->ops->get_channel)
 812                        return -EINVAL;
 813
 814                ret = rdev_get_channel(rdev, wdev, &chandef);
 815                if (ret)
 816                        return ret;
 817                freq->m = chandef.chan->center_freq;
 818                freq->e = 6;
 819                return 0;
 820        default:
 821                return -EINVAL;
 822        }
 823}
 824
 825static int cfg80211_wext_siwtxpower(struct net_device *dev,
 826                                    struct iw_request_info *info,
 827                                    union iwreq_data *data, char *extra)
 828{
 829        struct wireless_dev *wdev = dev->ieee80211_ptr;
 830        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 831        enum nl80211_tx_power_setting type;
 832        int dbm = 0;
 833
 834        if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 835                return -EINVAL;
 836        if (data->txpower.flags & IW_TXPOW_RANGE)
 837                return -EINVAL;
 838
 839        if (!rdev->ops->set_tx_power)
 840                return -EOPNOTSUPP;
 841
 842        /* only change when not disabling */
 843        if (!data->txpower.disabled) {
 844                rfkill_set_sw_state(rdev->rfkill, false);
 845
 846                if (data->txpower.fixed) {
 847                        /*
 848                         * wext doesn't support negative values, see
 849                         * below where it's for automatic
 850                         */
 851                        if (data->txpower.value < 0)
 852                                return -EINVAL;
 853                        dbm = data->txpower.value;
 854                        type = NL80211_TX_POWER_FIXED;
 855                        /* TODO: do regulatory check! */
 856                } else {
 857                        /*
 858                         * Automatic power level setting, max being the value
 859                         * passed in from userland.
 860                         */
 861                        if (data->txpower.value < 0) {
 862                                type = NL80211_TX_POWER_AUTOMATIC;
 863                        } else {
 864                                dbm = data->txpower.value;
 865                                type = NL80211_TX_POWER_LIMITED;
 866                        }
 867                }
 868        } else {
 869                rfkill_set_sw_state(rdev->rfkill, true);
 870                schedule_work(&rdev->rfkill_sync);
 871                return 0;
 872        }
 873
 874        return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
 875}
 876
 877static int cfg80211_wext_giwtxpower(struct net_device *dev,
 878                                    struct iw_request_info *info,
 879                                    union iwreq_data *data, char *extra)
 880{
 881        struct wireless_dev *wdev = dev->ieee80211_ptr;
 882        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 883        int err, val;
 884
 885        if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 886                return -EINVAL;
 887        if (data->txpower.flags & IW_TXPOW_RANGE)
 888                return -EINVAL;
 889
 890        if (!rdev->ops->get_tx_power)
 891                return -EOPNOTSUPP;
 892
 893        err = rdev_get_tx_power(rdev, wdev, &val);
 894        if (err)
 895                return err;
 896
 897        /* well... oh well */
 898        data->txpower.fixed = 1;
 899        data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 900        data->txpower.value = val;
 901        data->txpower.flags = IW_TXPOW_DBM;
 902
 903        return 0;
 904}
 905
 906static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 907                                 s32 auth_alg)
 908{
 909        int nr_alg = 0;
 910
 911        if (!auth_alg)
 912                return -EINVAL;
 913
 914        if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 915                         IW_AUTH_ALG_SHARED_KEY |
 916                         IW_AUTH_ALG_LEAP))
 917                return -EINVAL;
 918
 919        if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 920                nr_alg++;
 921                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 922        }
 923
 924        if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 925                nr_alg++;
 926                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 927        }
 928
 929        if (auth_alg & IW_AUTH_ALG_LEAP) {
 930                nr_alg++;
 931                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 932        }
 933
 934        if (nr_alg > 1)
 935                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 936
 937        return 0;
 938}
 939
 940static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 941{
 942        if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 943                             IW_AUTH_WPA_VERSION_WPA2|
 944                             IW_AUTH_WPA_VERSION_DISABLED))
 945                return -EINVAL;
 946
 947        if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
 948            (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
 949                             IW_AUTH_WPA_VERSION_WPA2)))
 950                return -EINVAL;
 951
 952        if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
 953                wdev->wext.connect.crypto.wpa_versions &=
 954                        ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
 955
 956        if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 957                wdev->wext.connect.crypto.wpa_versions |=
 958                        NL80211_WPA_VERSION_1;
 959
 960        if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 961                wdev->wext.connect.crypto.wpa_versions |=
 962                        NL80211_WPA_VERSION_2;
 963
 964        return 0;
 965}
 966
 967static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 968{
 969        if (cipher & IW_AUTH_CIPHER_WEP40)
 970                wdev->wext.connect.crypto.cipher_group =
 971                        WLAN_CIPHER_SUITE_WEP40;
 972        else if (cipher & IW_AUTH_CIPHER_WEP104)
 973                wdev->wext.connect.crypto.cipher_group =
 974                        WLAN_CIPHER_SUITE_WEP104;
 975        else if (cipher & IW_AUTH_CIPHER_TKIP)
 976                wdev->wext.connect.crypto.cipher_group =
 977                        WLAN_CIPHER_SUITE_TKIP;
 978        else if (cipher & IW_AUTH_CIPHER_CCMP)
 979                wdev->wext.connect.crypto.cipher_group =
 980                        WLAN_CIPHER_SUITE_CCMP;
 981        else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 982                wdev->wext.connect.crypto.cipher_group =
 983                        WLAN_CIPHER_SUITE_AES_CMAC;
 984        else if (cipher & IW_AUTH_CIPHER_NONE)
 985                wdev->wext.connect.crypto.cipher_group = 0;
 986        else
 987                return -EINVAL;
 988
 989        return 0;
 990}
 991
 992static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 993{
 994        int nr_ciphers = 0;
 995        u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 996
 997        if (cipher & IW_AUTH_CIPHER_WEP40) {
 998                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
 999                nr_ciphers++;
1000        }
1001
1002        if (cipher & IW_AUTH_CIPHER_WEP104) {
1003                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1004                nr_ciphers++;
1005        }
1006
1007        if (cipher & IW_AUTH_CIPHER_TKIP) {
1008                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1009                nr_ciphers++;
1010        }
1011
1012        if (cipher & IW_AUTH_CIPHER_CCMP) {
1013                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1014                nr_ciphers++;
1015        }
1016
1017        if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1018                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1019                nr_ciphers++;
1020        }
1021
1022        BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1023
1024        wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1025
1026        return 0;
1027}
1028
1029
1030static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1031{
1032        int nr_akm_suites = 0;
1033
1034        if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1035                        IW_AUTH_KEY_MGMT_PSK))
1036                return -EINVAL;
1037
1038        if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1039                wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1040                        WLAN_AKM_SUITE_8021X;
1041                nr_akm_suites++;
1042        }
1043
1044        if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1045                wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1046                        WLAN_AKM_SUITE_PSK;
1047                nr_akm_suites++;
1048        }
1049
1050        wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1051
1052        return 0;
1053}
1054
1055static int cfg80211_wext_siwauth(struct net_device *dev,
1056                                 struct iw_request_info *info,
1057                                 struct iw_param *data, char *extra)
1058{
1059        struct wireless_dev *wdev = dev->ieee80211_ptr;
1060
1061        if (wdev->iftype != NL80211_IFTYPE_STATION)
1062                return -EOPNOTSUPP;
1063
1064        switch (data->flags & IW_AUTH_INDEX) {
1065        case IW_AUTH_PRIVACY_INVOKED:
1066                wdev->wext.connect.privacy = data->value;
1067                return 0;
1068        case IW_AUTH_WPA_VERSION:
1069                return cfg80211_set_wpa_version(wdev, data->value);
1070        case IW_AUTH_CIPHER_GROUP:
1071                return cfg80211_set_cipher_group(wdev, data->value);
1072        case IW_AUTH_KEY_MGMT:
1073                return cfg80211_set_key_mgt(wdev, data->value);
1074        case IW_AUTH_CIPHER_PAIRWISE:
1075                return cfg80211_set_cipher_pairwise(wdev, data->value);
1076        case IW_AUTH_80211_AUTH_ALG:
1077                return cfg80211_set_auth_alg(wdev, data->value);
1078        case IW_AUTH_WPA_ENABLED:
1079        case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1080        case IW_AUTH_DROP_UNENCRYPTED:
1081        case IW_AUTH_MFP:
1082                return 0;
1083        default:
1084                return -EOPNOTSUPP;
1085        }
1086}
1087
1088static int cfg80211_wext_giwauth(struct net_device *dev,
1089                                 struct iw_request_info *info,
1090                                 struct iw_param *data, char *extra)
1091{
1092        /* XXX: what do we need? */
1093
1094        return -EOPNOTSUPP;
1095}
1096
1097static int cfg80211_wext_siwpower(struct net_device *dev,
1098                                  struct iw_request_info *info,
1099                                  struct iw_param *wrq, char *extra)
1100{
1101        struct wireless_dev *wdev = dev->ieee80211_ptr;
1102        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1103        bool ps = wdev->ps;
1104        int timeout = wdev->ps_timeout;
1105        int err;
1106
1107        if (wdev->iftype != NL80211_IFTYPE_STATION)
1108                return -EINVAL;
1109
1110        if (!rdev->ops->set_power_mgmt)
1111                return -EOPNOTSUPP;
1112
1113        if (wrq->disabled) {
1114                ps = false;
1115        } else {
1116                switch (wrq->flags & IW_POWER_MODE) {
1117                case IW_POWER_ON:       /* If not specified */
1118                case IW_POWER_MODE:     /* If set all mask */
1119                case IW_POWER_ALL_R:    /* If explicitely state all */
1120                        ps = true;
1121                        break;
1122                default:                /* Otherwise we ignore */
1123                        return -EINVAL;
1124                }
1125
1126                if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1127                        return -EINVAL;
1128
1129                if (wrq->flags & IW_POWER_TIMEOUT)
1130                        timeout = wrq->value / 1000;
1131        }
1132
1133        err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1134        if (err)
1135                return err;
1136
1137        wdev->ps = ps;
1138        wdev->ps_timeout = timeout;
1139
1140        return 0;
1141
1142}
1143
1144static int cfg80211_wext_giwpower(struct net_device *dev,
1145                                  struct iw_request_info *info,
1146                                  struct iw_param *wrq, char *extra)
1147{
1148        struct wireless_dev *wdev = dev->ieee80211_ptr;
1149
1150        wrq->disabled = !wdev->ps;
1151
1152        return 0;
1153}
1154
1155static int cfg80211_wds_wext_siwap(struct net_device *dev,
1156                                   struct iw_request_info *info,
1157                                   struct sockaddr *addr, char *extra)
1158{
1159        struct wireless_dev *wdev = dev->ieee80211_ptr;
1160        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1161        int err;
1162
1163        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1164                return -EINVAL;
1165
1166        if (addr->sa_family != ARPHRD_ETHER)
1167                return -EINVAL;
1168
1169        if (netif_running(dev))
1170                return -EBUSY;
1171
1172        if (!rdev->ops->set_wds_peer)
1173                return -EOPNOTSUPP;
1174
1175        err = rdev_set_wds_peer(rdev, dev, (u8 *)&addr->sa_data);
1176        if (err)
1177                return err;
1178
1179        memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1180
1181        return 0;
1182}
1183
1184static int cfg80211_wds_wext_giwap(struct net_device *dev,
1185                                   struct iw_request_info *info,
1186                                   struct sockaddr *addr, char *extra)
1187{
1188        struct wireless_dev *wdev = dev->ieee80211_ptr;
1189
1190        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1191                return -EINVAL;
1192
1193        addr->sa_family = ARPHRD_ETHER;
1194        memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1195
1196        return 0;
1197}
1198
1199static int cfg80211_wext_siwrate(struct net_device *dev,
1200                                 struct iw_request_info *info,
1201                                 struct iw_param *rate, char *extra)
1202{
1203        struct wireless_dev *wdev = dev->ieee80211_ptr;
1204        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1205        struct cfg80211_bitrate_mask mask;
1206        u32 fixed, maxrate;
1207        struct ieee80211_supported_band *sband;
1208        int band, ridx;
1209        bool match = false;
1210
1211        if (!rdev->ops->set_bitrate_mask)
1212                return -EOPNOTSUPP;
1213
1214        memset(&mask, 0, sizeof(mask));
1215        fixed = 0;
1216        maxrate = (u32)-1;
1217
1218        if (rate->value < 0) {
1219                /* nothing */
1220        } else if (rate->fixed) {
1221                fixed = rate->value / 100000;
1222        } else {
1223                maxrate = rate->value / 100000;
1224        }
1225
1226        for (band = 0; band < NUM_NL80211_BANDS; band++) {
1227                sband = wdev->wiphy->bands[band];
1228                if (sband == NULL)
1229                        continue;
1230                for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1231                        struct ieee80211_rate *srate = &sband->bitrates[ridx];
1232                        if (fixed == srate->bitrate) {
1233                                mask.control[band].legacy = 1 << ridx;
1234                                match = true;
1235                                break;
1236                        }
1237                        if (srate->bitrate <= maxrate) {
1238                                mask.control[band].legacy |= 1 << ridx;
1239                                match = true;
1240                        }
1241                }
1242        }
1243
1244        if (!match)
1245                return -EINVAL;
1246
1247        return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1248}
1249
1250static int cfg80211_wext_giwrate(struct net_device *dev,
1251                                 struct iw_request_info *info,
1252                                 struct iw_param *rate, char *extra)
1253{
1254        struct wireless_dev *wdev = dev->ieee80211_ptr;
1255        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1256        /* we are under RTNL - globally locked - so can use a static struct */
1257        static struct station_info sinfo;
1258        u8 addr[ETH_ALEN];
1259        int err;
1260
1261        if (wdev->iftype != NL80211_IFTYPE_STATION)
1262                return -EOPNOTSUPP;
1263
1264        if (!rdev->ops->get_station)
1265                return -EOPNOTSUPP;
1266
1267        err = 0;
1268        wdev_lock(wdev);
1269        if (wdev->current_bss)
1270                memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1271        else
1272                err = -EOPNOTSUPP;
1273        wdev_unlock(wdev);
1274        if (err)
1275                return err;
1276
1277        err = rdev_get_station(rdev, dev, addr, &sinfo);
1278        if (err)
1279                return err;
1280
1281        if (!(sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE)))
1282                return -EOPNOTSUPP;
1283
1284        rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1285
1286        return 0;
1287}
1288
1289/* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1290static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1291{
1292        struct wireless_dev *wdev = dev->ieee80211_ptr;
1293        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1294        /* we are under RTNL - globally locked - so can use static structs */
1295        static struct iw_statistics wstats;
1296        static struct station_info sinfo;
1297        u8 bssid[ETH_ALEN];
1298
1299        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1300                return NULL;
1301
1302        if (!rdev->ops->get_station)
1303                return NULL;
1304
1305        /* Grab BSSID of current BSS, if any */
1306        wdev_lock(wdev);
1307        if (!wdev->current_bss) {
1308                wdev_unlock(wdev);
1309                return NULL;
1310        }
1311        memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1312        wdev_unlock(wdev);
1313
1314        memset(&sinfo, 0, sizeof(sinfo));
1315
1316        if (rdev_get_station(rdev, dev, bssid, &sinfo))
1317                return NULL;
1318
1319        memset(&wstats, 0, sizeof(wstats));
1320
1321        switch (rdev->wiphy.signal_type) {
1322        case CFG80211_SIGNAL_TYPE_MBM:
1323                if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL)) {
1324                        int sig = sinfo.signal;
1325                        wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1326                        wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1327                        wstats.qual.updated |= IW_QUAL_DBM;
1328                        wstats.qual.level = sig;
1329                        if (sig < -110)
1330                                sig = -110;
1331                        else if (sig > -40)
1332                                sig = -40;
1333                        wstats.qual.qual = sig + 110;
1334                        break;
1335                }
1336        case CFG80211_SIGNAL_TYPE_UNSPEC:
1337                if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL)) {
1338                        wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1339                        wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1340                        wstats.qual.level = sinfo.signal;
1341                        wstats.qual.qual = sinfo.signal;
1342                        break;
1343                }
1344        default:
1345                wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1346                wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1347        }
1348
1349        wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1350        if (sinfo.filled & BIT(NL80211_STA_INFO_RX_DROP_MISC))
1351                wstats.discard.misc = sinfo.rx_dropped_misc;
1352        if (sinfo.filled & BIT(NL80211_STA_INFO_TX_FAILED))
1353                wstats.discard.retries = sinfo.tx_failed;
1354
1355        return &wstats;
1356}
1357
1358static int cfg80211_wext_siwap(struct net_device *dev,
1359                               struct iw_request_info *info,
1360                               struct sockaddr *ap_addr, char *extra)
1361{
1362        struct wireless_dev *wdev = dev->ieee80211_ptr;
1363
1364        switch (wdev->iftype) {
1365        case NL80211_IFTYPE_ADHOC:
1366                return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1367        case NL80211_IFTYPE_STATION:
1368                return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1369        case NL80211_IFTYPE_WDS:
1370                return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1371        default:
1372                return -EOPNOTSUPP;
1373        }
1374}
1375
1376static int cfg80211_wext_giwap(struct net_device *dev,
1377                               struct iw_request_info *info,
1378                               struct sockaddr *ap_addr, char *extra)
1379{
1380        struct wireless_dev *wdev = dev->ieee80211_ptr;
1381
1382        switch (wdev->iftype) {
1383        case NL80211_IFTYPE_ADHOC:
1384                return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1385        case NL80211_IFTYPE_STATION:
1386                return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1387        case NL80211_IFTYPE_WDS:
1388                return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1389        default:
1390                return -EOPNOTSUPP;
1391        }
1392}
1393
1394static int cfg80211_wext_siwessid(struct net_device *dev,
1395                                  struct iw_request_info *info,
1396                                  struct iw_point *data, char *ssid)
1397{
1398        struct wireless_dev *wdev = dev->ieee80211_ptr;
1399
1400        switch (wdev->iftype) {
1401        case NL80211_IFTYPE_ADHOC:
1402                return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1403        case NL80211_IFTYPE_STATION:
1404                return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1405        default:
1406                return -EOPNOTSUPP;
1407        }
1408}
1409
1410static int cfg80211_wext_giwessid(struct net_device *dev,
1411                                  struct iw_request_info *info,
1412                                  struct iw_point *data, char *ssid)
1413{
1414        struct wireless_dev *wdev = dev->ieee80211_ptr;
1415
1416        data->flags = 0;
1417        data->length = 0;
1418
1419        switch (wdev->iftype) {
1420        case NL80211_IFTYPE_ADHOC:
1421                return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1422        case NL80211_IFTYPE_STATION:
1423                return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1424        default:
1425                return -EOPNOTSUPP;
1426        }
1427}
1428
1429static int cfg80211_wext_siwpmksa(struct net_device *dev,
1430                                  struct iw_request_info *info,
1431                                  struct iw_point *data, char *extra)
1432{
1433        struct wireless_dev *wdev = dev->ieee80211_ptr;
1434        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1435        struct cfg80211_pmksa cfg_pmksa;
1436        struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1437
1438        memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1439
1440        if (wdev->iftype != NL80211_IFTYPE_STATION)
1441                return -EINVAL;
1442
1443        cfg_pmksa.bssid = pmksa->bssid.sa_data;
1444        cfg_pmksa.pmkid = pmksa->pmkid;
1445
1446        switch (pmksa->cmd) {
1447        case IW_PMKSA_ADD:
1448                if (!rdev->ops->set_pmksa)
1449                        return -EOPNOTSUPP;
1450
1451                return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1452
1453        case IW_PMKSA_REMOVE:
1454                if (!rdev->ops->del_pmksa)
1455                        return -EOPNOTSUPP;
1456
1457                return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1458
1459        case IW_PMKSA_FLUSH:
1460                if (!rdev->ops->flush_pmksa)
1461                        return -EOPNOTSUPP;
1462
1463                return rdev_flush_pmksa(rdev, dev);
1464
1465        default:
1466                return -EOPNOTSUPP;
1467        }
1468}
1469
1470static const iw_handler cfg80211_handlers[] = {
1471        [IW_IOCTL_IDX(SIOCGIWNAME)]     = (iw_handler) cfg80211_wext_giwname,
1472        [IW_IOCTL_IDX(SIOCSIWFREQ)]     = (iw_handler) cfg80211_wext_siwfreq,
1473        [IW_IOCTL_IDX(SIOCGIWFREQ)]     = (iw_handler) cfg80211_wext_giwfreq,
1474        [IW_IOCTL_IDX(SIOCSIWMODE)]     = (iw_handler) cfg80211_wext_siwmode,
1475        [IW_IOCTL_IDX(SIOCGIWMODE)]     = (iw_handler) cfg80211_wext_giwmode,
1476        [IW_IOCTL_IDX(SIOCGIWRANGE)]    = (iw_handler) cfg80211_wext_giwrange,
1477        [IW_IOCTL_IDX(SIOCSIWAP)]       = (iw_handler) cfg80211_wext_siwap,
1478        [IW_IOCTL_IDX(SIOCGIWAP)]       = (iw_handler) cfg80211_wext_giwap,
1479        [IW_IOCTL_IDX(SIOCSIWMLME)]     = (iw_handler) cfg80211_wext_siwmlme,
1480        [IW_IOCTL_IDX(SIOCSIWSCAN)]     = (iw_handler) cfg80211_wext_siwscan,
1481        [IW_IOCTL_IDX(SIOCGIWSCAN)]     = (iw_handler) cfg80211_wext_giwscan,
1482        [IW_IOCTL_IDX(SIOCSIWESSID)]    = (iw_handler) cfg80211_wext_siwessid,
1483        [IW_IOCTL_IDX(SIOCGIWESSID)]    = (iw_handler) cfg80211_wext_giwessid,
1484        [IW_IOCTL_IDX(SIOCSIWRATE)]     = (iw_handler) cfg80211_wext_siwrate,
1485        [IW_IOCTL_IDX(SIOCGIWRATE)]     = (iw_handler) cfg80211_wext_giwrate,
1486        [IW_IOCTL_IDX(SIOCSIWRTS)]      = (iw_handler) cfg80211_wext_siwrts,
1487        [IW_IOCTL_IDX(SIOCGIWRTS)]      = (iw_handler) cfg80211_wext_giwrts,
1488        [IW_IOCTL_IDX(SIOCSIWFRAG)]     = (iw_handler) cfg80211_wext_siwfrag,
1489        [IW_IOCTL_IDX(SIOCGIWFRAG)]     = (iw_handler) cfg80211_wext_giwfrag,
1490        [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = (iw_handler) cfg80211_wext_siwtxpower,
1491        [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = (iw_handler) cfg80211_wext_giwtxpower,
1492        [IW_IOCTL_IDX(SIOCSIWRETRY)]    = (iw_handler) cfg80211_wext_siwretry,
1493        [IW_IOCTL_IDX(SIOCGIWRETRY)]    = (iw_handler) cfg80211_wext_giwretry,
1494        [IW_IOCTL_IDX(SIOCSIWENCODE)]   = (iw_handler) cfg80211_wext_siwencode,
1495        [IW_IOCTL_IDX(SIOCGIWENCODE)]   = (iw_handler) cfg80211_wext_giwencode,
1496        [IW_IOCTL_IDX(SIOCSIWPOWER)]    = (iw_handler) cfg80211_wext_siwpower,
1497        [IW_IOCTL_IDX(SIOCGIWPOWER)]    = (iw_handler) cfg80211_wext_giwpower,
1498        [IW_IOCTL_IDX(SIOCSIWGENIE)]    = (iw_handler) cfg80211_wext_siwgenie,
1499        [IW_IOCTL_IDX(SIOCSIWAUTH)]     = (iw_handler) cfg80211_wext_siwauth,
1500        [IW_IOCTL_IDX(SIOCGIWAUTH)]     = (iw_handler) cfg80211_wext_giwauth,
1501        [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1502        [IW_IOCTL_IDX(SIOCSIWPMKSA)]    = (iw_handler) cfg80211_wext_siwpmksa,
1503};
1504
1505const struct iw_handler_def cfg80211_wext_handler = {
1506        .num_standard           = ARRAY_SIZE(cfg80211_handlers),
1507        .standard               = cfg80211_handlers,
1508        .get_wireless_stats = cfg80211_wireless_stats,
1509};
1510