linux/net/wireless/wext-compat.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * cfg80211 - wext compat code
   4 *
   5 * This is temporary code until all wireless functionality is migrated
   6 * into cfg80211, when that happens all the exports here go away and
   7 * we directly assign the wireless handlers of wireless interfaces.
   8 *
   9 * Copyright 2008-2009  Johannes Berg <johannes@sipsolutions.net>
  10 * Copyright (C) 2019-2021 Intel Corporation
  11 */
  12
  13#include <linux/export.h>
  14#include <linux/wireless.h>
  15#include <linux/nl80211.h>
  16#include <linux/if_arp.h>
  17#include <linux/etherdevice.h>
  18#include <linux/slab.h>
  19#include <net/iw_handler.h>
  20#include <net/cfg80211.h>
  21#include <net/cfg80211-wext.h>
  22#include "wext-compat.h"
  23#include "core.h"
  24#include "rdev-ops.h"
  25
  26int cfg80211_wext_giwname(struct net_device *dev,
  27                          struct iw_request_info *info,
  28                          char *name, char *extra)
  29{
  30        strcpy(name, "IEEE 802.11");
  31        return 0;
  32}
  33EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
  34
  35int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  36                          u32 *mode, char *extra)
  37{
  38        struct wireless_dev *wdev = dev->ieee80211_ptr;
  39        struct cfg80211_registered_device *rdev;
  40        struct vif_params vifparams;
  41        enum nl80211_iftype type;
  42        int ret;
  43
  44        rdev = wiphy_to_rdev(wdev->wiphy);
  45
  46        switch (*mode) {
  47        case IW_MODE_INFRA:
  48                type = NL80211_IFTYPE_STATION;
  49                break;
  50        case IW_MODE_ADHOC:
  51                type = NL80211_IFTYPE_ADHOC;
  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        wiphy_lock(wdev->wiphy);
  66        ret = cfg80211_change_iface(rdev, dev, type, &vifparams);
  67        wiphy_unlock(wdev->wiphy);
  68
  69        return ret;
  70}
  71EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
  72
  73int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
  74                          u32 *mode, char *extra)
  75{
  76        struct wireless_dev *wdev = dev->ieee80211_ptr;
  77
  78        if (!wdev)
  79                return -EOPNOTSUPP;
  80
  81        switch (wdev->iftype) {
  82        case NL80211_IFTYPE_AP:
  83                *mode = IW_MODE_MASTER;
  84                break;
  85        case NL80211_IFTYPE_STATION:
  86                *mode = IW_MODE_INFRA;
  87                break;
  88        case NL80211_IFTYPE_ADHOC:
  89                *mode = IW_MODE_ADHOC;
  90                break;
  91        case NL80211_IFTYPE_MONITOR:
  92                *mode = IW_MODE_MONITOR;
  93                break;
  94        case NL80211_IFTYPE_WDS:
  95                *mode = IW_MODE_REPEAT;
  96                break;
  97        case NL80211_IFTYPE_AP_VLAN:
  98                *mode = IW_MODE_SECOND;         /* FIXME */
  99                break;
 100        default:
 101                *mode = IW_MODE_AUTO;
 102                break;
 103        }
 104        return 0;
 105}
 106EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
 107
 108
 109int cfg80211_wext_giwrange(struct net_device *dev,
 110                           struct iw_request_info *info,
 111                           struct iw_point *data, char *extra)
 112{
 113        struct wireless_dev *wdev = dev->ieee80211_ptr;
 114        struct iw_range *range = (struct iw_range *) extra;
 115        enum nl80211_band band;
 116        int i, c = 0;
 117
 118        if (!wdev)
 119                return -EOPNOTSUPP;
 120
 121        data->length = sizeof(struct iw_range);
 122        memset(range, 0, sizeof(struct iw_range));
 123
 124        range->we_version_compiled = WIRELESS_EXT;
 125        range->we_version_source = 21;
 126        range->retry_capa = IW_RETRY_LIMIT;
 127        range->retry_flags = IW_RETRY_LIMIT;
 128        range->min_retry = 0;
 129        range->max_retry = 255;
 130        range->min_rts = 0;
 131        range->max_rts = 2347;
 132        range->min_frag = 256;
 133        range->max_frag = 2346;
 134
 135        range->max_encoding_tokens = 4;
 136
 137        range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 138
 139        switch (wdev->wiphy->signal_type) {
 140        case CFG80211_SIGNAL_TYPE_NONE:
 141                break;
 142        case CFG80211_SIGNAL_TYPE_MBM:
 143                range->max_qual.level = (u8)-110;
 144                range->max_qual.qual = 70;
 145                range->avg_qual.qual = 35;
 146                range->max_qual.updated |= IW_QUAL_DBM;
 147                range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 148                range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 149                break;
 150        case CFG80211_SIGNAL_TYPE_UNSPEC:
 151                range->max_qual.level = 100;
 152                range->max_qual.qual = 100;
 153                range->avg_qual.qual = 50;
 154                range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 155                range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 156                break;
 157        }
 158
 159        range->avg_qual.level = range->max_qual.level / 2;
 160        range->avg_qual.noise = range->max_qual.noise / 2;
 161        range->avg_qual.updated = range->max_qual.updated;
 162
 163        for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 164                switch (wdev->wiphy->cipher_suites[i]) {
 165                case WLAN_CIPHER_SUITE_TKIP:
 166                        range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 167                                            IW_ENC_CAPA_WPA);
 168                        break;
 169
 170                case WLAN_CIPHER_SUITE_CCMP:
 171                        range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 172                                            IW_ENC_CAPA_WPA2);
 173                        break;
 174
 175                case WLAN_CIPHER_SUITE_WEP40:
 176                        range->encoding_size[range->num_encoding_sizes++] =
 177                                WLAN_KEY_LEN_WEP40;
 178                        break;
 179
 180                case WLAN_CIPHER_SUITE_WEP104:
 181                        range->encoding_size[range->num_encoding_sizes++] =
 182                                WLAN_KEY_LEN_WEP104;
 183                        break;
 184                }
 185        }
 186
 187        for (band = 0; band < NUM_NL80211_BANDS; band ++) {
 188                struct ieee80211_supported_band *sband;
 189
 190                sband = wdev->wiphy->bands[band];
 191
 192                if (!sband)
 193                        continue;
 194
 195                for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 196                        struct ieee80211_channel *chan = &sband->channels[i];
 197
 198                        if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 199                                range->freq[c].i =
 200                                        ieee80211_frequency_to_channel(
 201                                                chan->center_freq);
 202                                range->freq[c].m = chan->center_freq;
 203                                range->freq[c].e = 6;
 204                                c++;
 205                        }
 206                }
 207        }
 208        range->num_channels = c;
 209        range->num_frequency = c;
 210
 211        IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 212        IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 213        IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 214
 215        if (wdev->wiphy->max_scan_ssids > 0)
 216                range->scan_capa |= IW_SCAN_CAPA_ESSID;
 217
 218        return 0;
 219}
 220EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
 221
 222
 223/**
 224 * cfg80211_wext_freq - get wext frequency for non-"auto"
 225 * @freq: the wext freq encoding
 226 *
 227 * Returns a frequency, or a negative error code, or 0 for auto.
 228 */
 229int cfg80211_wext_freq(struct iw_freq *freq)
 230{
 231        /*
 232         * Parse frequency - return 0 for auto and
 233         * -EINVAL for impossible things.
 234         */
 235        if (freq->e == 0) {
 236                enum nl80211_band band = NL80211_BAND_2GHZ;
 237                if (freq->m < 0)
 238                        return 0;
 239                if (freq->m > 14)
 240                        band = NL80211_BAND_5GHZ;
 241                return ieee80211_channel_to_frequency(freq->m, band);
 242        } else {
 243                int i, div = 1000000;
 244                for (i = 0; i < freq->e; i++)
 245                        div /= 10;
 246                if (div <= 0)
 247                        return -EINVAL;
 248                return freq->m / div;
 249        }
 250}
 251
 252int cfg80211_wext_siwrts(struct net_device *dev,
 253                         struct iw_request_info *info,
 254                         struct iw_param *rts, char *extra)
 255{
 256        struct wireless_dev *wdev = dev->ieee80211_ptr;
 257        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 258        u32 orts = wdev->wiphy->rts_threshold;
 259        int err;
 260
 261        wiphy_lock(&rdev->wiphy);
 262        if (rts->disabled || !rts->fixed) {
 263                wdev->wiphy->rts_threshold = (u32) -1;
 264        } else if (rts->value < 0) {
 265                err = -EINVAL;
 266                goto out;
 267        } else {
 268                wdev->wiphy->rts_threshold = rts->value;
 269        }
 270
 271        err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
 272
 273        if (err)
 274                wdev->wiphy->rts_threshold = orts;
 275
 276out:
 277        wiphy_unlock(&rdev->wiphy);
 278        return err;
 279}
 280EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
 281
 282int cfg80211_wext_giwrts(struct net_device *dev,
 283                         struct iw_request_info *info,
 284                         struct iw_param *rts, char *extra)
 285{
 286        struct wireless_dev *wdev = dev->ieee80211_ptr;
 287
 288        rts->value = wdev->wiphy->rts_threshold;
 289        rts->disabled = rts->value == (u32) -1;
 290        rts->fixed = 1;
 291
 292        return 0;
 293}
 294EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
 295
 296int cfg80211_wext_siwfrag(struct net_device *dev,
 297                          struct iw_request_info *info,
 298                          struct iw_param *frag, char *extra)
 299{
 300        struct wireless_dev *wdev = dev->ieee80211_ptr;
 301        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 302        u32 ofrag = wdev->wiphy->frag_threshold;
 303        int err;
 304
 305        wiphy_lock(&rdev->wiphy);
 306        if (frag->disabled || !frag->fixed) {
 307                wdev->wiphy->frag_threshold = (u32) -1;
 308        } else if (frag->value < 256) {
 309                err = -EINVAL;
 310                goto out;
 311        } else {
 312                /* Fragment length must be even, so strip LSB. */
 313                wdev->wiphy->frag_threshold = frag->value & ~0x1;
 314        }
 315
 316        err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
 317        if (err)
 318                wdev->wiphy->frag_threshold = ofrag;
 319out:
 320        wiphy_unlock(&rdev->wiphy);
 321
 322        return err;
 323}
 324EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
 325
 326int cfg80211_wext_giwfrag(struct net_device *dev,
 327                          struct iw_request_info *info,
 328                          struct iw_param *frag, char *extra)
 329{
 330        struct wireless_dev *wdev = dev->ieee80211_ptr;
 331
 332        frag->value = wdev->wiphy->frag_threshold;
 333        frag->disabled = frag->value == (u32) -1;
 334        frag->fixed = 1;
 335
 336        return 0;
 337}
 338EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
 339
 340static int cfg80211_wext_siwretry(struct net_device *dev,
 341                                  struct iw_request_info *info,
 342                                  struct iw_param *retry, char *extra)
 343{
 344        struct wireless_dev *wdev = dev->ieee80211_ptr;
 345        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 346        u32 changed = 0;
 347        u8 olong = wdev->wiphy->retry_long;
 348        u8 oshort = wdev->wiphy->retry_short;
 349        int err;
 350
 351        if (retry->disabled || retry->value < 1 || retry->value > 255 ||
 352            (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 353                return -EINVAL;
 354
 355        wiphy_lock(&rdev->wiphy);
 356        if (retry->flags & IW_RETRY_LONG) {
 357                wdev->wiphy->retry_long = retry->value;
 358                changed |= WIPHY_PARAM_RETRY_LONG;
 359        } else if (retry->flags & IW_RETRY_SHORT) {
 360                wdev->wiphy->retry_short = retry->value;
 361                changed |= WIPHY_PARAM_RETRY_SHORT;
 362        } else {
 363                wdev->wiphy->retry_short = retry->value;
 364                wdev->wiphy->retry_long = retry->value;
 365                changed |= WIPHY_PARAM_RETRY_LONG;
 366                changed |= WIPHY_PARAM_RETRY_SHORT;
 367        }
 368
 369        err = rdev_set_wiphy_params(rdev, changed);
 370        if (err) {
 371                wdev->wiphy->retry_short = oshort;
 372                wdev->wiphy->retry_long = olong;
 373        }
 374        wiphy_unlock(&rdev->wiphy);
 375
 376        return err;
 377}
 378
 379int cfg80211_wext_giwretry(struct net_device *dev,
 380                           struct iw_request_info *info,
 381                           struct iw_param *retry, char *extra)
 382{
 383        struct wireless_dev *wdev = dev->ieee80211_ptr;
 384
 385        retry->disabled = 0;
 386
 387        if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 388                /*
 389                 * First return short value, iwconfig will ask long value
 390                 * later if needed
 391                 */
 392                retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
 393                retry->value = wdev->wiphy->retry_short;
 394                if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
 395                        retry->flags |= IW_RETRY_LONG;
 396
 397                return 0;
 398        }
 399
 400        if (retry->flags & IW_RETRY_LONG) {
 401                retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 402                retry->value = wdev->wiphy->retry_long;
 403        }
 404
 405        return 0;
 406}
 407EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
 408
 409static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 410                                     struct net_device *dev, bool pairwise,
 411                                     const u8 *addr, bool remove, bool tx_key,
 412                                     int idx, struct key_params *params)
 413{
 414        struct wireless_dev *wdev = dev->ieee80211_ptr;
 415        int err, i;
 416        bool rejoin = false;
 417
 418        if (pairwise && !addr)
 419                return -EINVAL;
 420
 421        /*
 422         * In many cases we won't actually need this, but it's better
 423         * to do it first in case the allocation fails. Don't use wext.
 424         */
 425        if (!wdev->wext.keys) {
 426                wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 427                                          GFP_KERNEL);
 428                if (!wdev->wext.keys)
 429                        return -ENOMEM;
 430                for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
 431                        wdev->wext.keys->params[i].key =
 432                                wdev->wext.keys->data[i];
 433        }
 434
 435        if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 436            wdev->iftype != NL80211_IFTYPE_STATION)
 437                return -EOPNOTSUPP;
 438
 439        if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 440                if (!wdev->current_bss)
 441                        return -ENOLINK;
 442
 443                if (!rdev->ops->set_default_mgmt_key)
 444                        return -EOPNOTSUPP;
 445
 446                if (idx < 4 || idx > 5)
 447                        return -EINVAL;
 448        } else if (idx < 0 || idx > 3)
 449                return -EINVAL;
 450
 451        if (remove) {
 452                err = 0;
 453                if (wdev->current_bss) {
 454                        /*
 455                         * If removing the current TX key, we will need to
 456                         * join a new IBSS without the privacy bit clear.
 457                         */
 458                        if (idx == wdev->wext.default_key &&
 459                            wdev->iftype == NL80211_IFTYPE_ADHOC) {
 460                                __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 461                                rejoin = true;
 462                        }
 463
 464                        if (!pairwise && addr &&
 465                            !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
 466                                err = -ENOENT;
 467                        else
 468                                err = rdev_del_key(rdev, dev, idx, pairwise,
 469                                                   addr);
 470                }
 471                wdev->wext.connect.privacy = false;
 472                /*
 473                 * Applications using wireless extensions expect to be
 474                 * able to delete keys that don't exist, so allow that.
 475                 */
 476                if (err == -ENOENT)
 477                        err = 0;
 478                if (!err) {
 479                        if (!addr && idx < 4) {
 480                                memset(wdev->wext.keys->data[idx], 0,
 481                                       sizeof(wdev->wext.keys->data[idx]));
 482                                wdev->wext.keys->params[idx].key_len = 0;
 483                                wdev->wext.keys->params[idx].cipher = 0;
 484                        }
 485                        if (idx == wdev->wext.default_key)
 486                                wdev->wext.default_key = -1;
 487                        else if (idx == wdev->wext.default_mgmt_key)
 488                                wdev->wext.default_mgmt_key = -1;
 489                }
 490
 491                if (!err && rejoin)
 492                        err = cfg80211_ibss_wext_join(rdev, wdev);
 493
 494                return err;
 495        }
 496
 497        if (addr)
 498                tx_key = false;
 499
 500        if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
 501                return -EINVAL;
 502
 503        err = 0;
 504        if (wdev->current_bss)
 505                err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
 506        else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
 507                 params->cipher != WLAN_CIPHER_SUITE_WEP104)
 508                return -EINVAL;
 509        if (err)
 510                return err;
 511
 512        /*
 513         * We only need to store WEP keys, since they're the only keys that
 514         * can be set before a connection is established and persist after
 515         * disconnecting.
 516         */
 517        if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 518                      params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 519                wdev->wext.keys->params[idx] = *params;
 520                memcpy(wdev->wext.keys->data[idx],
 521                        params->key, params->key_len);
 522                wdev->wext.keys->params[idx].key =
 523                        wdev->wext.keys->data[idx];
 524        }
 525
 526        if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 527             params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 528            (tx_key || (!addr && wdev->wext.default_key == -1))) {
 529                if (wdev->current_bss) {
 530                        /*
 531                         * If we are getting a new TX key from not having
 532                         * had one before we need to join a new IBSS with
 533                         * the privacy bit set.
 534                         */
 535                        if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 536                            wdev->wext.default_key == -1) {
 537                                __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 538                                rejoin = true;
 539                        }
 540                        err = rdev_set_default_key(rdev, dev, idx, true, true);
 541                }
 542                if (!err) {
 543                        wdev->wext.default_key = idx;
 544                        if (rejoin)
 545                                err = cfg80211_ibss_wext_join(rdev, wdev);
 546                }
 547                return err;
 548        }
 549
 550        if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 551            (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 552                if (wdev->current_bss)
 553                        err = rdev_set_default_mgmt_key(rdev, dev, idx);
 554                if (!err)
 555                        wdev->wext.default_mgmt_key = idx;
 556                return err;
 557        }
 558
 559        return 0;
 560}
 561
 562static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 563                                   struct net_device *dev, bool pairwise,
 564                                   const u8 *addr, bool remove, bool tx_key,
 565                                   int idx, struct key_params *params)
 566{
 567        int err;
 568
 569        wdev_lock(dev->ieee80211_ptr);
 570        err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
 571                                        remove, tx_key, idx, params);
 572        wdev_unlock(dev->ieee80211_ptr);
 573
 574        return err;
 575}
 576
 577static int cfg80211_wext_siwencode(struct net_device *dev,
 578                                   struct iw_request_info *info,
 579                                   struct iw_point *erq, char *keybuf)
 580{
 581        struct wireless_dev *wdev = dev->ieee80211_ptr;
 582        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 583        int idx, err;
 584        bool remove = false;
 585        struct key_params params;
 586
 587        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 588            wdev->iftype != NL80211_IFTYPE_ADHOC)
 589                return -EOPNOTSUPP;
 590
 591        /* no use -- only MFP (set_default_mgmt_key) is optional */
 592        if (!rdev->ops->del_key ||
 593            !rdev->ops->add_key ||
 594            !rdev->ops->set_default_key)
 595                return -EOPNOTSUPP;
 596
 597        wiphy_lock(&rdev->wiphy);
 598        idx = erq->flags & IW_ENCODE_INDEX;
 599        if (idx == 0) {
 600                idx = wdev->wext.default_key;
 601                if (idx < 0)
 602                        idx = 0;
 603        } else if (idx < 1 || idx > 4) {
 604                err = -EINVAL;
 605                goto out;
 606        } else {
 607                idx--;
 608        }
 609
 610        if (erq->flags & IW_ENCODE_DISABLED)
 611                remove = true;
 612        else if (erq->length == 0) {
 613                /* No key data - just set the default TX key index */
 614                err = 0;
 615                wdev_lock(wdev);
 616                if (wdev->current_bss)
 617                        err = rdev_set_default_key(rdev, dev, idx, true,
 618                                                   true);
 619                if (!err)
 620                        wdev->wext.default_key = idx;
 621                wdev_unlock(wdev);
 622                goto out;
 623        }
 624
 625        memset(&params, 0, sizeof(params));
 626        params.key = keybuf;
 627        params.key_len = erq->length;
 628        if (erq->length == 5) {
 629                params.cipher = WLAN_CIPHER_SUITE_WEP40;
 630        } else if (erq->length == 13) {
 631                params.cipher = WLAN_CIPHER_SUITE_WEP104;
 632        } else if (!remove) {
 633                err = -EINVAL;
 634                goto out;
 635        }
 636
 637        err = cfg80211_set_encryption(rdev, dev, false, NULL, remove,
 638                                      wdev->wext.default_key == -1,
 639                                      idx, &params);
 640out:
 641        wiphy_unlock(&rdev->wiphy);
 642
 643        return err;
 644}
 645
 646static int cfg80211_wext_siwencodeext(struct net_device *dev,
 647                                      struct iw_request_info *info,
 648                                      struct iw_point *erq, char *extra)
 649{
 650        struct wireless_dev *wdev = dev->ieee80211_ptr;
 651        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 652        struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 653        const u8 *addr;
 654        int idx;
 655        bool remove = false;
 656        struct key_params params;
 657        u32 cipher;
 658        int ret;
 659
 660        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 661            wdev->iftype != NL80211_IFTYPE_ADHOC)
 662                return -EOPNOTSUPP;
 663
 664        /* no use -- only MFP (set_default_mgmt_key) is optional */
 665        if (!rdev->ops->del_key ||
 666            !rdev->ops->add_key ||
 667            !rdev->ops->set_default_key)
 668                return -EOPNOTSUPP;
 669
 670        switch (ext->alg) {
 671        case IW_ENCODE_ALG_NONE:
 672                remove = true;
 673                cipher = 0;
 674                break;
 675        case IW_ENCODE_ALG_WEP:
 676                if (ext->key_len == 5)
 677                        cipher = WLAN_CIPHER_SUITE_WEP40;
 678                else if (ext->key_len == 13)
 679                        cipher = WLAN_CIPHER_SUITE_WEP104;
 680                else
 681                        return -EINVAL;
 682                break;
 683        case IW_ENCODE_ALG_TKIP:
 684                cipher = WLAN_CIPHER_SUITE_TKIP;
 685                break;
 686        case IW_ENCODE_ALG_CCMP:
 687                cipher = WLAN_CIPHER_SUITE_CCMP;
 688                break;
 689        case IW_ENCODE_ALG_AES_CMAC:
 690                cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 691                break;
 692        default:
 693                return -EOPNOTSUPP;
 694        }
 695
 696        if (erq->flags & IW_ENCODE_DISABLED)
 697                remove = true;
 698
 699        idx = erq->flags & IW_ENCODE_INDEX;
 700        if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 701                if (idx < 4 || idx > 5) {
 702                        idx = wdev->wext.default_mgmt_key;
 703                        if (idx < 0)
 704                                return -EINVAL;
 705                } else
 706                        idx--;
 707        } else {
 708                if (idx < 1 || idx > 4) {
 709                        idx = wdev->wext.default_key;
 710                        if (idx < 0)
 711                                return -EINVAL;
 712                } else
 713                        idx--;
 714        }
 715
 716        addr = ext->addr.sa_data;
 717        if (is_broadcast_ether_addr(addr))
 718                addr = NULL;
 719
 720        memset(&params, 0, sizeof(params));
 721        params.key = ext->key;
 722        params.key_len = ext->key_len;
 723        params.cipher = cipher;
 724
 725        if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 726                params.seq = ext->rx_seq;
 727                params.seq_len = 6;
 728        }
 729
 730        wiphy_lock(wdev->wiphy);
 731        ret = cfg80211_set_encryption(
 732                        rdev, dev,
 733                        !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
 734                        addr, remove,
 735                        ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 736                        idx, &params);
 737        wiphy_unlock(wdev->wiphy);
 738
 739        return ret;
 740}
 741
 742static int cfg80211_wext_giwencode(struct net_device *dev,
 743                                   struct iw_request_info *info,
 744                                   struct iw_point *erq, char *keybuf)
 745{
 746        struct wireless_dev *wdev = dev->ieee80211_ptr;
 747        int idx;
 748
 749        if (wdev->iftype != NL80211_IFTYPE_STATION &&
 750            wdev->iftype != NL80211_IFTYPE_ADHOC)
 751                return -EOPNOTSUPP;
 752
 753        idx = erq->flags & IW_ENCODE_INDEX;
 754        if (idx == 0) {
 755                idx = wdev->wext.default_key;
 756                if (idx < 0)
 757                        idx = 0;
 758        } else if (idx < 1 || idx > 4)
 759                return -EINVAL;
 760        else
 761                idx--;
 762
 763        erq->flags = idx + 1;
 764
 765        if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 766                erq->flags |= IW_ENCODE_DISABLED;
 767                erq->length = 0;
 768                return 0;
 769        }
 770
 771        erq->length = min_t(size_t, erq->length,
 772                            wdev->wext.keys->params[idx].key_len);
 773        memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 774        erq->flags |= IW_ENCODE_ENABLED;
 775
 776        return 0;
 777}
 778
 779static int cfg80211_wext_siwfreq(struct net_device *dev,
 780                                 struct iw_request_info *info,
 781                                 struct iw_freq *wextfreq, char *extra)
 782{
 783        struct wireless_dev *wdev = dev->ieee80211_ptr;
 784        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 785        struct cfg80211_chan_def chandef = {
 786                .width = NL80211_CHAN_WIDTH_20_NOHT,
 787        };
 788        int freq, ret;
 789
 790        wiphy_lock(&rdev->wiphy);
 791
 792        switch (wdev->iftype) {
 793        case NL80211_IFTYPE_STATION:
 794                ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 795                break;
 796        case NL80211_IFTYPE_ADHOC:
 797                ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 798                break;
 799        case NL80211_IFTYPE_MONITOR:
 800                freq = cfg80211_wext_freq(wextfreq);
 801                if (freq < 0) {
 802                        ret = freq;
 803                        break;
 804                }
 805                if (freq == 0) {
 806                        ret = -EINVAL;
 807                        break;
 808                }
 809                chandef.center_freq1 = freq;
 810                chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 811                if (!chandef.chan) {
 812                        ret = -EINVAL;
 813                        break;
 814                }
 815                ret = cfg80211_set_monitor_channel(rdev, &chandef);
 816                break;
 817        case NL80211_IFTYPE_MESH_POINT:
 818                freq = cfg80211_wext_freq(wextfreq);
 819                if (freq < 0) {
 820                        ret = freq;
 821                        break;
 822                }
 823                if (freq == 0) {
 824                        ret = -EINVAL;
 825                        break;
 826                }
 827                chandef.center_freq1 = freq;
 828                chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 829                if (!chandef.chan) {
 830                        ret = -EINVAL;
 831                        break;
 832                }
 833                ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
 834                break;
 835        default:
 836                ret = -EOPNOTSUPP;
 837                break;
 838        }
 839
 840        wiphy_unlock(&rdev->wiphy);
 841
 842        return ret;
 843}
 844
 845static int cfg80211_wext_giwfreq(struct net_device *dev,
 846                                 struct iw_request_info *info,
 847                                 struct iw_freq *freq, char *extra)
 848{
 849        struct wireless_dev *wdev = dev->ieee80211_ptr;
 850        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 851        struct cfg80211_chan_def chandef = {};
 852        int ret;
 853
 854        wiphy_lock(&rdev->wiphy);
 855        switch (wdev->iftype) {
 856        case NL80211_IFTYPE_STATION:
 857                ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 858                break;
 859        case NL80211_IFTYPE_ADHOC:
 860                ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 861                break;
 862        case NL80211_IFTYPE_MONITOR:
 863                if (!rdev->ops->get_channel) {
 864                        ret = -EINVAL;
 865                        break;
 866                }
 867
 868                ret = rdev_get_channel(rdev, wdev, &chandef);
 869                if (ret)
 870                        break;
 871                freq->m = chandef.chan->center_freq;
 872                freq->e = 6;
 873                ret = 0;
 874                break;
 875        default:
 876                ret = -EINVAL;
 877                break;
 878        }
 879
 880        wiphy_unlock(&rdev->wiphy);
 881
 882        return ret;
 883}
 884
 885static int cfg80211_wext_siwtxpower(struct net_device *dev,
 886                                    struct iw_request_info *info,
 887                                    union iwreq_data *data, char *extra)
 888{
 889        struct wireless_dev *wdev = dev->ieee80211_ptr;
 890        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 891        enum nl80211_tx_power_setting type;
 892        int dbm = 0;
 893        int ret;
 894
 895        if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 896                return -EINVAL;
 897        if (data->txpower.flags & IW_TXPOW_RANGE)
 898                return -EINVAL;
 899
 900        if (!rdev->ops->set_tx_power)
 901                return -EOPNOTSUPP;
 902
 903        /* only change when not disabling */
 904        if (!data->txpower.disabled) {
 905                rfkill_set_sw_state(rdev->wiphy.rfkill, false);
 906
 907                if (data->txpower.fixed) {
 908                        /*
 909                         * wext doesn't support negative values, see
 910                         * below where it's for automatic
 911                         */
 912                        if (data->txpower.value < 0)
 913                                return -EINVAL;
 914                        dbm = data->txpower.value;
 915                        type = NL80211_TX_POWER_FIXED;
 916                        /* TODO: do regulatory check! */
 917                } else {
 918                        /*
 919                         * Automatic power level setting, max being the value
 920                         * passed in from userland.
 921                         */
 922                        if (data->txpower.value < 0) {
 923                                type = NL80211_TX_POWER_AUTOMATIC;
 924                        } else {
 925                                dbm = data->txpower.value;
 926                                type = NL80211_TX_POWER_LIMITED;
 927                        }
 928                }
 929        } else {
 930                if (rfkill_set_sw_state(rdev->wiphy.rfkill, true))
 931                        schedule_work(&rdev->rfkill_block);
 932                return 0;
 933        }
 934
 935        wiphy_lock(&rdev->wiphy);
 936        ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
 937        wiphy_unlock(&rdev->wiphy);
 938
 939        return ret;
 940}
 941
 942static int cfg80211_wext_giwtxpower(struct net_device *dev,
 943                                    struct iw_request_info *info,
 944                                    union iwreq_data *data, char *extra)
 945{
 946        struct wireless_dev *wdev = dev->ieee80211_ptr;
 947        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 948        int err, val;
 949
 950        if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 951                return -EINVAL;
 952        if (data->txpower.flags & IW_TXPOW_RANGE)
 953                return -EINVAL;
 954
 955        if (!rdev->ops->get_tx_power)
 956                return -EOPNOTSUPP;
 957
 958        wiphy_lock(&rdev->wiphy);
 959        err = rdev_get_tx_power(rdev, wdev, &val);
 960        wiphy_unlock(&rdev->wiphy);
 961        if (err)
 962                return err;
 963
 964        /* well... oh well */
 965        data->txpower.fixed = 1;
 966        data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill);
 967        data->txpower.value = val;
 968        data->txpower.flags = IW_TXPOW_DBM;
 969
 970        return 0;
 971}
 972
 973static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 974                                 s32 auth_alg)
 975{
 976        int nr_alg = 0;
 977
 978        if (!auth_alg)
 979                return -EINVAL;
 980
 981        if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 982                         IW_AUTH_ALG_SHARED_KEY |
 983                         IW_AUTH_ALG_LEAP))
 984                return -EINVAL;
 985
 986        if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 987                nr_alg++;
 988                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 989        }
 990
 991        if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 992                nr_alg++;
 993                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 994        }
 995
 996        if (auth_alg & IW_AUTH_ALG_LEAP) {
 997                nr_alg++;
 998                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 999        }
1000
1001        if (nr_alg > 1)
1002                wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
1003
1004        return 0;
1005}
1006
1007static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
1008{
1009        if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
1010                             IW_AUTH_WPA_VERSION_WPA2|
1011                             IW_AUTH_WPA_VERSION_DISABLED))
1012                return -EINVAL;
1013
1014        if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
1015            (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
1016                             IW_AUTH_WPA_VERSION_WPA2)))
1017                return -EINVAL;
1018
1019        if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
1020                wdev->wext.connect.crypto.wpa_versions &=
1021                        ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
1022
1023        if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
1024                wdev->wext.connect.crypto.wpa_versions |=
1025                        NL80211_WPA_VERSION_1;
1026
1027        if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
1028                wdev->wext.connect.crypto.wpa_versions |=
1029                        NL80211_WPA_VERSION_2;
1030
1031        return 0;
1032}
1033
1034static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
1035{
1036        if (cipher & IW_AUTH_CIPHER_WEP40)
1037                wdev->wext.connect.crypto.cipher_group =
1038                        WLAN_CIPHER_SUITE_WEP40;
1039        else if (cipher & IW_AUTH_CIPHER_WEP104)
1040                wdev->wext.connect.crypto.cipher_group =
1041                        WLAN_CIPHER_SUITE_WEP104;
1042        else if (cipher & IW_AUTH_CIPHER_TKIP)
1043                wdev->wext.connect.crypto.cipher_group =
1044                        WLAN_CIPHER_SUITE_TKIP;
1045        else if (cipher & IW_AUTH_CIPHER_CCMP)
1046                wdev->wext.connect.crypto.cipher_group =
1047                        WLAN_CIPHER_SUITE_CCMP;
1048        else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
1049                wdev->wext.connect.crypto.cipher_group =
1050                        WLAN_CIPHER_SUITE_AES_CMAC;
1051        else if (cipher & IW_AUTH_CIPHER_NONE)
1052                wdev->wext.connect.crypto.cipher_group = 0;
1053        else
1054                return -EINVAL;
1055
1056        return 0;
1057}
1058
1059static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
1060{
1061        int nr_ciphers = 0;
1062        u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
1063
1064        if (cipher & IW_AUTH_CIPHER_WEP40) {
1065                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1066                nr_ciphers++;
1067        }
1068
1069        if (cipher & IW_AUTH_CIPHER_WEP104) {
1070                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1071                nr_ciphers++;
1072        }
1073
1074        if (cipher & IW_AUTH_CIPHER_TKIP) {
1075                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1076                nr_ciphers++;
1077        }
1078
1079        if (cipher & IW_AUTH_CIPHER_CCMP) {
1080                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1081                nr_ciphers++;
1082        }
1083
1084        if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1085                ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1086                nr_ciphers++;
1087        }
1088
1089        BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1090
1091        wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1092
1093        return 0;
1094}
1095
1096
1097static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1098{
1099        int nr_akm_suites = 0;
1100
1101        if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1102                        IW_AUTH_KEY_MGMT_PSK))
1103                return -EINVAL;
1104
1105        if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1106                wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1107                        WLAN_AKM_SUITE_8021X;
1108                nr_akm_suites++;
1109        }
1110
1111        if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1112                wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1113                        WLAN_AKM_SUITE_PSK;
1114                nr_akm_suites++;
1115        }
1116
1117        wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1118
1119        return 0;
1120}
1121
1122static int cfg80211_wext_siwauth(struct net_device *dev,
1123                                 struct iw_request_info *info,
1124                                 struct iw_param *data, char *extra)
1125{
1126        struct wireless_dev *wdev = dev->ieee80211_ptr;
1127
1128        if (wdev->iftype != NL80211_IFTYPE_STATION)
1129                return -EOPNOTSUPP;
1130
1131        switch (data->flags & IW_AUTH_INDEX) {
1132        case IW_AUTH_PRIVACY_INVOKED:
1133                wdev->wext.connect.privacy = data->value;
1134                return 0;
1135        case IW_AUTH_WPA_VERSION:
1136                return cfg80211_set_wpa_version(wdev, data->value);
1137        case IW_AUTH_CIPHER_GROUP:
1138                return cfg80211_set_cipher_group(wdev, data->value);
1139        case IW_AUTH_KEY_MGMT:
1140                return cfg80211_set_key_mgt(wdev, data->value);
1141        case IW_AUTH_CIPHER_PAIRWISE:
1142                return cfg80211_set_cipher_pairwise(wdev, data->value);
1143        case IW_AUTH_80211_AUTH_ALG:
1144                return cfg80211_set_auth_alg(wdev, data->value);
1145        case IW_AUTH_WPA_ENABLED:
1146        case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1147        case IW_AUTH_DROP_UNENCRYPTED:
1148        case IW_AUTH_MFP:
1149                return 0;
1150        default:
1151                return -EOPNOTSUPP;
1152        }
1153}
1154
1155static int cfg80211_wext_giwauth(struct net_device *dev,
1156                                 struct iw_request_info *info,
1157                                 struct iw_param *data, char *extra)
1158{
1159        /* XXX: what do we need? */
1160
1161        return -EOPNOTSUPP;
1162}
1163
1164static int cfg80211_wext_siwpower(struct net_device *dev,
1165                                  struct iw_request_info *info,
1166                                  struct iw_param *wrq, char *extra)
1167{
1168        struct wireless_dev *wdev = dev->ieee80211_ptr;
1169        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1170        bool ps;
1171        int timeout = wdev->ps_timeout;
1172        int err;
1173
1174        if (wdev->iftype != NL80211_IFTYPE_STATION)
1175                return -EINVAL;
1176
1177        if (!rdev->ops->set_power_mgmt)
1178                return -EOPNOTSUPP;
1179
1180        if (wrq->disabled) {
1181                ps = false;
1182        } else {
1183                switch (wrq->flags & IW_POWER_MODE) {
1184                case IW_POWER_ON:       /* If not specified */
1185                case IW_POWER_MODE:     /* If set all mask */
1186                case IW_POWER_ALL_R:    /* If explicitely state all */
1187                        ps = true;
1188                        break;
1189                default:                /* Otherwise we ignore */
1190                        return -EINVAL;
1191                }
1192
1193                if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1194                        return -EINVAL;
1195
1196                if (wrq->flags & IW_POWER_TIMEOUT)
1197                        timeout = wrq->value / 1000;
1198        }
1199
1200        wiphy_lock(&rdev->wiphy);
1201        err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1202        wiphy_unlock(&rdev->wiphy);
1203        if (err)
1204                return err;
1205
1206        wdev->ps = ps;
1207        wdev->ps_timeout = timeout;
1208
1209        return 0;
1210
1211}
1212
1213static int cfg80211_wext_giwpower(struct net_device *dev,
1214                                  struct iw_request_info *info,
1215                                  struct iw_param *wrq, char *extra)
1216{
1217        struct wireless_dev *wdev = dev->ieee80211_ptr;
1218
1219        wrq->disabled = !wdev->ps;
1220
1221        return 0;
1222}
1223
1224static int cfg80211_wext_siwrate(struct net_device *dev,
1225                                 struct iw_request_info *info,
1226                                 struct iw_param *rate, char *extra)
1227{
1228        struct wireless_dev *wdev = dev->ieee80211_ptr;
1229        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1230        struct cfg80211_bitrate_mask mask;
1231        u32 fixed, maxrate;
1232        struct ieee80211_supported_band *sband;
1233        int band, ridx, ret;
1234        bool match = false;
1235
1236        if (!rdev->ops->set_bitrate_mask)
1237                return -EOPNOTSUPP;
1238
1239        memset(&mask, 0, sizeof(mask));
1240        fixed = 0;
1241        maxrate = (u32)-1;
1242
1243        if (rate->value < 0) {
1244                /* nothing */
1245        } else if (rate->fixed) {
1246                fixed = rate->value / 100000;
1247        } else {
1248                maxrate = rate->value / 100000;
1249        }
1250
1251        for (band = 0; band < NUM_NL80211_BANDS; band++) {
1252                sband = wdev->wiphy->bands[band];
1253                if (sband == NULL)
1254                        continue;
1255                for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1256                        struct ieee80211_rate *srate = &sband->bitrates[ridx];
1257                        if (fixed == srate->bitrate) {
1258                                mask.control[band].legacy = 1 << ridx;
1259                                match = true;
1260                                break;
1261                        }
1262                        if (srate->bitrate <= maxrate) {
1263                                mask.control[band].legacy |= 1 << ridx;
1264                                match = true;
1265                        }
1266                }
1267        }
1268
1269        if (!match)
1270                return -EINVAL;
1271
1272        wiphy_lock(&rdev->wiphy);
1273        ret = rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1274        wiphy_unlock(&rdev->wiphy);
1275
1276        return ret;
1277}
1278
1279static int cfg80211_wext_giwrate(struct net_device *dev,
1280                                 struct iw_request_info *info,
1281                                 struct iw_param *rate, char *extra)
1282{
1283        struct wireless_dev *wdev = dev->ieee80211_ptr;
1284        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1285        struct station_info sinfo = {};
1286        u8 addr[ETH_ALEN];
1287        int err;
1288
1289        if (wdev->iftype != NL80211_IFTYPE_STATION)
1290                return -EOPNOTSUPP;
1291
1292        if (!rdev->ops->get_station)
1293                return -EOPNOTSUPP;
1294
1295        err = 0;
1296        wdev_lock(wdev);
1297        if (wdev->current_bss)
1298                memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1299        else
1300                err = -EOPNOTSUPP;
1301        wdev_unlock(wdev);
1302        if (err)
1303                return err;
1304
1305        wiphy_lock(&rdev->wiphy);
1306        err = rdev_get_station(rdev, dev, addr, &sinfo);
1307        wiphy_unlock(&rdev->wiphy);
1308        if (err)
1309                return err;
1310
1311        if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) {
1312                err = -EOPNOTSUPP;
1313                goto free;
1314        }
1315
1316        rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1317
1318free:
1319        cfg80211_sinfo_release_content(&sinfo);
1320        return err;
1321}
1322
1323/* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1324static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1325{
1326        struct wireless_dev *wdev = dev->ieee80211_ptr;
1327        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1328        /* we are under RTNL - globally locked - so can use static structs */
1329        static struct iw_statistics wstats;
1330        static struct station_info sinfo = {};
1331        u8 bssid[ETH_ALEN];
1332        int ret;
1333
1334        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1335                return NULL;
1336
1337        if (!rdev->ops->get_station)
1338                return NULL;
1339
1340        /* Grab BSSID of current BSS, if any */
1341        wdev_lock(wdev);
1342        if (!wdev->current_bss) {
1343                wdev_unlock(wdev);
1344                return NULL;
1345        }
1346        memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1347        wdev_unlock(wdev);
1348
1349        memset(&sinfo, 0, sizeof(sinfo));
1350
1351        wiphy_lock(&rdev->wiphy);
1352        ret = rdev_get_station(rdev, dev, bssid, &sinfo);
1353        wiphy_unlock(&rdev->wiphy);
1354
1355        if (ret)
1356                return NULL;
1357
1358        memset(&wstats, 0, sizeof(wstats));
1359
1360        switch (rdev->wiphy.signal_type) {
1361        case CFG80211_SIGNAL_TYPE_MBM:
1362                if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1363                        int sig = sinfo.signal;
1364                        wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1365                        wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1366                        wstats.qual.updated |= IW_QUAL_DBM;
1367                        wstats.qual.level = sig;
1368                        if (sig < -110)
1369                                sig = -110;
1370                        else if (sig > -40)
1371                                sig = -40;
1372                        wstats.qual.qual = sig + 110;
1373                        break;
1374                }
1375                fallthrough;
1376        case CFG80211_SIGNAL_TYPE_UNSPEC:
1377                if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1378                        wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1379                        wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1380                        wstats.qual.level = sinfo.signal;
1381                        wstats.qual.qual = sinfo.signal;
1382                        break;
1383                }
1384                fallthrough;
1385        default:
1386                wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1387                wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1388        }
1389
1390        wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1391        if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC))
1392                wstats.discard.misc = sinfo.rx_dropped_misc;
1393        if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))
1394                wstats.discard.retries = sinfo.tx_failed;
1395
1396        cfg80211_sinfo_release_content(&sinfo);
1397
1398        return &wstats;
1399}
1400
1401static int cfg80211_wext_siwap(struct net_device *dev,
1402                               struct iw_request_info *info,
1403                               struct sockaddr *ap_addr, char *extra)
1404{
1405        struct wireless_dev *wdev = dev->ieee80211_ptr;
1406        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1407        int ret;
1408
1409        wiphy_lock(&rdev->wiphy);
1410        switch (wdev->iftype) {
1411        case NL80211_IFTYPE_ADHOC:
1412                ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1413                break;
1414        case NL80211_IFTYPE_STATION:
1415                ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1416                break;
1417        default:
1418                ret = -EOPNOTSUPP;
1419                break;
1420        }
1421        wiphy_unlock(&rdev->wiphy);
1422
1423        return ret;
1424}
1425
1426static int cfg80211_wext_giwap(struct net_device *dev,
1427                               struct iw_request_info *info,
1428                               struct sockaddr *ap_addr, char *extra)
1429{
1430        struct wireless_dev *wdev = dev->ieee80211_ptr;
1431        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1432        int ret;
1433
1434        wiphy_lock(&rdev->wiphy);
1435        switch (wdev->iftype) {
1436        case NL80211_IFTYPE_ADHOC:
1437                ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1438                break;
1439        case NL80211_IFTYPE_STATION:
1440                ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1441                break;
1442        default:
1443                ret = -EOPNOTSUPP;
1444                break;
1445        }
1446        wiphy_unlock(&rdev->wiphy);
1447
1448        return ret;
1449}
1450
1451static int cfg80211_wext_siwessid(struct net_device *dev,
1452                                  struct iw_request_info *info,
1453                                  struct iw_point *data, char *ssid)
1454{
1455        struct wireless_dev *wdev = dev->ieee80211_ptr;
1456        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1457        int ret;
1458
1459        wiphy_lock(&rdev->wiphy);
1460        switch (wdev->iftype) {
1461        case NL80211_IFTYPE_ADHOC:
1462                ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1463                break;
1464        case NL80211_IFTYPE_STATION:
1465                ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1466                break;
1467        default:
1468                ret = -EOPNOTSUPP;
1469                break;
1470        }
1471        wiphy_unlock(&rdev->wiphy);
1472
1473        return ret;
1474}
1475
1476static int cfg80211_wext_giwessid(struct net_device *dev,
1477                                  struct iw_request_info *info,
1478                                  struct iw_point *data, char *ssid)
1479{
1480        struct wireless_dev *wdev = dev->ieee80211_ptr;
1481        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1482        int ret;
1483
1484        data->flags = 0;
1485        data->length = 0;
1486
1487        wiphy_lock(&rdev->wiphy);
1488        switch (wdev->iftype) {
1489        case NL80211_IFTYPE_ADHOC:
1490                ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1491                break;
1492        case NL80211_IFTYPE_STATION:
1493                ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1494                break;
1495        default:
1496                ret = -EOPNOTSUPP;
1497                break;
1498        }
1499        wiphy_unlock(&rdev->wiphy);
1500
1501        return ret;
1502}
1503
1504static int cfg80211_wext_siwpmksa(struct net_device *dev,
1505                                  struct iw_request_info *info,
1506                                  struct iw_point *data, char *extra)
1507{
1508        struct wireless_dev *wdev = dev->ieee80211_ptr;
1509        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1510        struct cfg80211_pmksa cfg_pmksa;
1511        struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1512        int ret;
1513
1514        memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1515
1516        if (wdev->iftype != NL80211_IFTYPE_STATION)
1517                return -EINVAL;
1518
1519        cfg_pmksa.bssid = pmksa->bssid.sa_data;
1520        cfg_pmksa.pmkid = pmksa->pmkid;
1521
1522        wiphy_lock(&rdev->wiphy);
1523        switch (pmksa->cmd) {
1524        case IW_PMKSA_ADD:
1525                if (!rdev->ops->set_pmksa) {
1526                        ret = -EOPNOTSUPP;
1527                        break;
1528                }
1529
1530                ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1531                break;
1532        case IW_PMKSA_REMOVE:
1533                if (!rdev->ops->del_pmksa) {
1534                        ret = -EOPNOTSUPP;
1535                        break;
1536                }
1537
1538                ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1539                break;
1540        case IW_PMKSA_FLUSH:
1541                if (!rdev->ops->flush_pmksa) {
1542                        ret = -EOPNOTSUPP;
1543                        break;
1544                }
1545
1546                ret = rdev_flush_pmksa(rdev, dev);
1547                break;
1548        default:
1549                ret = -EOPNOTSUPP;
1550                break;
1551        }
1552        wiphy_unlock(&rdev->wiphy);
1553
1554        return ret;
1555}
1556
1557#define DEFINE_WEXT_COMPAT_STUB(func, type)                     \
1558        static int __ ## func(struct net_device *dev,           \
1559                              struct iw_request_info *info,     \
1560                              union iwreq_data *wrqu,           \
1561                              char *extra)                      \
1562        {                                                       \
1563                return func(dev, info, (type *)wrqu, extra);    \
1564        }
1565
1566DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwname, char)
1567DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfreq, struct iw_freq)
1568DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfreq, struct iw_freq)
1569DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmode, u32)
1570DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwmode, u32)
1571DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrange, struct iw_point)
1572DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwap, struct sockaddr)
1573DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwap, struct sockaddr)
1574DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmlme, struct iw_point)
1575DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwscan, struct iw_point)
1576DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwessid, struct iw_point)
1577DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwessid, struct iw_point)
1578DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrate, struct iw_param)
1579DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrate, struct iw_param)
1580DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrts, struct iw_param)
1581DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrts, struct iw_param)
1582DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfrag, struct iw_param)
1583DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfrag, struct iw_param)
1584DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwretry, struct iw_param)
1585DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwretry, struct iw_param)
1586DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencode, struct iw_point)
1587DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwencode, struct iw_point)
1588DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwpower, struct iw_param)
1589DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpower, struct iw_param)
1590DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwgenie, struct iw_point)
1591DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwauth, struct iw_param)
1592DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwauth, struct iw_param)
1593DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencodeext, struct iw_point)
1594DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpmksa, struct iw_point)
1595
1596static const iw_handler cfg80211_handlers[] = {
1597        [IW_IOCTL_IDX(SIOCGIWNAME)]     = __cfg80211_wext_giwname,
1598        [IW_IOCTL_IDX(SIOCSIWFREQ)]     = __cfg80211_wext_siwfreq,
1599        [IW_IOCTL_IDX(SIOCGIWFREQ)]     = __cfg80211_wext_giwfreq,
1600        [IW_IOCTL_IDX(SIOCSIWMODE)]     = __cfg80211_wext_siwmode,
1601        [IW_IOCTL_IDX(SIOCGIWMODE)]     = __cfg80211_wext_giwmode,
1602        [IW_IOCTL_IDX(SIOCGIWRANGE)]    = __cfg80211_wext_giwrange,
1603        [IW_IOCTL_IDX(SIOCSIWAP)]       = __cfg80211_wext_siwap,
1604        [IW_IOCTL_IDX(SIOCGIWAP)]       = __cfg80211_wext_giwap,
1605        [IW_IOCTL_IDX(SIOCSIWMLME)]     = __cfg80211_wext_siwmlme,
1606        [IW_IOCTL_IDX(SIOCSIWSCAN)]     = cfg80211_wext_siwscan,
1607        [IW_IOCTL_IDX(SIOCGIWSCAN)]     = __cfg80211_wext_giwscan,
1608        [IW_IOCTL_IDX(SIOCSIWESSID)]    = __cfg80211_wext_siwessid,
1609        [IW_IOCTL_IDX(SIOCGIWESSID)]    = __cfg80211_wext_giwessid,
1610        [IW_IOCTL_IDX(SIOCSIWRATE)]     = __cfg80211_wext_siwrate,
1611        [IW_IOCTL_IDX(SIOCGIWRATE)]     = __cfg80211_wext_giwrate,
1612        [IW_IOCTL_IDX(SIOCSIWRTS)]      = __cfg80211_wext_siwrts,
1613        [IW_IOCTL_IDX(SIOCGIWRTS)]      = __cfg80211_wext_giwrts,
1614        [IW_IOCTL_IDX(SIOCSIWFRAG)]     = __cfg80211_wext_siwfrag,
1615        [IW_IOCTL_IDX(SIOCGIWFRAG)]     = __cfg80211_wext_giwfrag,
1616        [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = cfg80211_wext_siwtxpower,
1617        [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = cfg80211_wext_giwtxpower,
1618        [IW_IOCTL_IDX(SIOCSIWRETRY)]    = __cfg80211_wext_siwretry,
1619        [IW_IOCTL_IDX(SIOCGIWRETRY)]    = __cfg80211_wext_giwretry,
1620        [IW_IOCTL_IDX(SIOCSIWENCODE)]   = __cfg80211_wext_siwencode,
1621        [IW_IOCTL_IDX(SIOCGIWENCODE)]   = __cfg80211_wext_giwencode,
1622        [IW_IOCTL_IDX(SIOCSIWPOWER)]    = __cfg80211_wext_siwpower,
1623        [IW_IOCTL_IDX(SIOCGIWPOWER)]    = __cfg80211_wext_giwpower,
1624        [IW_IOCTL_IDX(SIOCSIWGENIE)]    = __cfg80211_wext_siwgenie,
1625        [IW_IOCTL_IDX(SIOCSIWAUTH)]     = __cfg80211_wext_siwauth,
1626        [IW_IOCTL_IDX(SIOCGIWAUTH)]     = __cfg80211_wext_giwauth,
1627        [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= __cfg80211_wext_siwencodeext,
1628        [IW_IOCTL_IDX(SIOCSIWPMKSA)]    = __cfg80211_wext_siwpmksa,
1629};
1630
1631const struct iw_handler_def cfg80211_wext_handler = {
1632        .num_standard           = ARRAY_SIZE(cfg80211_handlers),
1633        .standard               = cfg80211_handlers,
1634        .get_wireless_stats = cfg80211_wireless_stats,
1635};
1636