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) 2019-2023, 2026 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 <linux/string.h> 20 #include <net/iw_handler.h> 21 #include <net/cfg80211.h> 22 #include <net/cfg80211-wext.h> 23 #include "wext-compat.h" 24 #include "core.h" 25 #include "rdev-ops.h" 26 27 int cfg80211_wext_giwname(struct net_device *dev, 28 struct iw_request_info *info, 29 union iwreq_data *wrqu, char *extra) 30 { 31 strscpy(wrqu->name, "IEEE 802.11"); 32 return 0; 33 } 34 35 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 36 union iwreq_data *wrqu, char *extra) 37 { 38 __u32 *mode = &wrqu->mode; 39 struct wireless_dev *wdev = dev->ieee80211_ptr; 40 struct cfg80211_registered_device *rdev; 41 struct vif_params vifparams; 42 enum nl80211_iftype type; 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 guard(wiphy)(wdev->wiphy); 66 67 return cfg80211_change_iface(rdev, dev, type, &vifparams); 68 } 69 70 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 71 union iwreq_data *wrqu, char *extra) 72 { 73 __u32 *mode = &wrqu->mode; 74 struct wireless_dev *wdev = dev->ieee80211_ptr; 75 76 if (!wdev) 77 return -EOPNOTSUPP; 78 79 switch (wdev->iftype) { 80 case NL80211_IFTYPE_AP: 81 *mode = IW_MODE_MASTER; 82 break; 83 case NL80211_IFTYPE_STATION: 84 *mode = IW_MODE_INFRA; 85 break; 86 case NL80211_IFTYPE_ADHOC: 87 *mode = IW_MODE_ADHOC; 88 break; 89 case NL80211_IFTYPE_MONITOR: 90 *mode = IW_MODE_MONITOR; 91 break; 92 case NL80211_IFTYPE_WDS: 93 *mode = IW_MODE_REPEAT; 94 break; 95 case NL80211_IFTYPE_AP_VLAN: 96 *mode = IW_MODE_SECOND; /* FIXME */ 97 break; 98 default: 99 *mode = IW_MODE_AUTO; 100 break; 101 } 102 return 0; 103 } 104 105 106 int cfg80211_wext_giwrange(struct net_device *dev, 107 struct iw_request_info *info, 108 union iwreq_data *wrqu, char *extra) 109 { 110 struct iw_point *data = &wrqu->data; 111 struct wireless_dev *wdev = dev->ieee80211_ptr; 112 struct iw_range *range = (struct iw_range *) extra; 113 enum nl80211_band band; 114 int i, c = 0; 115 116 if (!wdev) 117 return -EOPNOTSUPP; 118 119 data->length = sizeof(struct iw_range); 120 memset(range, 0, sizeof(struct iw_range)); 121 122 range->we_version_compiled = WIRELESS_EXT; 123 range->we_version_source = 21; 124 range->retry_capa = IW_RETRY_LIMIT; 125 range->retry_flags = IW_RETRY_LIMIT; 126 range->min_retry = 0; 127 range->max_retry = 255; 128 range->min_rts = 0; 129 range->max_rts = 2347; 130 range->min_frag = 256; 131 range->max_frag = 2346; 132 133 range->max_encoding_tokens = 4; 134 135 range->max_qual.updated = IW_QUAL_NOISE_INVALID; 136 137 switch (wdev->wiphy->signal_type) { 138 case CFG80211_SIGNAL_TYPE_NONE: 139 break; 140 case CFG80211_SIGNAL_TYPE_MBM: 141 range->max_qual.level = (u8)-110; 142 range->max_qual.qual = 70; 143 range->avg_qual.qual = 35; 144 range->max_qual.updated |= IW_QUAL_DBM; 145 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 146 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 147 break; 148 case CFG80211_SIGNAL_TYPE_UNSPEC: 149 range->max_qual.level = 100; 150 range->max_qual.qual = 100; 151 range->avg_qual.qual = 50; 152 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 153 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 154 break; 155 } 156 157 range->avg_qual.level = range->max_qual.level / 2; 158 range->avg_qual.noise = range->max_qual.noise / 2; 159 range->avg_qual.updated = range->max_qual.updated; 160 161 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) { 162 switch (wdev->wiphy->cipher_suites[i]) { 163 case WLAN_CIPHER_SUITE_TKIP: 164 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP | 165 IW_ENC_CAPA_WPA); 166 break; 167 168 case WLAN_CIPHER_SUITE_CCMP: 169 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP | 170 IW_ENC_CAPA_WPA2); 171 break; 172 173 case WLAN_CIPHER_SUITE_WEP40: 174 range->encoding_size[range->num_encoding_sizes++] = 175 WLAN_KEY_LEN_WEP40; 176 break; 177 178 case WLAN_CIPHER_SUITE_WEP104: 179 range->encoding_size[range->num_encoding_sizes++] = 180 WLAN_KEY_LEN_WEP104; 181 break; 182 } 183 } 184 185 for (band = 0; band < NUM_NL80211_BANDS; band ++) { 186 struct ieee80211_supported_band *sband; 187 188 sband = wdev->wiphy->bands[band]; 189 190 if (!sband) 191 continue; 192 193 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) { 194 struct ieee80211_channel *chan = &sband->channels[i]; 195 196 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) { 197 range->freq[c].i = 198 ieee80211_frequency_to_channel( 199 chan->center_freq); 200 range->freq[c].m = chan->center_freq; 201 range->freq[c].e = 6; 202 c++; 203 } 204 } 205 } 206 range->num_channels = c; 207 range->num_frequency = c; 208 209 IW_EVENT_CAPA_SET_KERNEL(range->event_capa); 210 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP); 211 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN); 212 213 if (wdev->wiphy->max_scan_ssids > 0) 214 range->scan_capa |= IW_SCAN_CAPA_ESSID; 215 216 return 0; 217 } 218 219 220 /** 221 * cfg80211_wext_freq - get wext frequency for non-"auto" 222 * @freq: the wext freq encoding 223 * 224 * Returns: a frequency, or a negative error code, or 0 for auto. 225 */ 226 int 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 } 248 249 int cfg80211_wext_siwrts(struct net_device *dev, 250 struct iw_request_info *info, 251 union iwreq_data *wrqu, char *extra) 252 { 253 struct iw_param *rts = &wrqu->rts; 254 struct wireless_dev *wdev = dev->ieee80211_ptr; 255 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 256 u32 orts = wdev->wiphy->rts_threshold; 257 int err; 258 259 guard(wiphy)(&rdev->wiphy); 260 if (rts->disabled || !rts->fixed) 261 wdev->wiphy->rts_threshold = (u32) -1; 262 else if (rts->value < 0) 263 return -EINVAL; 264 else 265 wdev->wiphy->rts_threshold = rts->value; 266 267 err = rdev_set_wiphy_params(rdev, -1, WIPHY_PARAM_RTS_THRESHOLD); 268 if (err) 269 wdev->wiphy->rts_threshold = orts; 270 return err; 271 } 272 273 int cfg80211_wext_giwrts(struct net_device *dev, 274 struct iw_request_info *info, 275 union iwreq_data *wrqu, char *extra) 276 { 277 struct iw_param *rts = &wrqu->rts; 278 struct wireless_dev *wdev = dev->ieee80211_ptr; 279 280 rts->value = wdev->wiphy->rts_threshold; 281 rts->disabled = rts->value == (u32) -1; 282 rts->fixed = 1; 283 284 return 0; 285 } 286 287 int cfg80211_wext_siwfrag(struct net_device *dev, 288 struct iw_request_info *info, 289 union iwreq_data *wrqu, char *extra) 290 { 291 struct iw_param *frag = &wrqu->frag; 292 struct wireless_dev *wdev = dev->ieee80211_ptr; 293 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 294 u32 ofrag = wdev->wiphy->frag_threshold; 295 int err; 296 297 guard(wiphy)(&rdev->wiphy); 298 299 if (frag->disabled || !frag->fixed) { 300 wdev->wiphy->frag_threshold = (u32) -1; 301 } else if (frag->value < 256) { 302 return -EINVAL; 303 } else { 304 /* Fragment length must be even, so strip LSB. */ 305 wdev->wiphy->frag_threshold = frag->value & ~0x1; 306 } 307 308 err = rdev_set_wiphy_params(rdev, -1, WIPHY_PARAM_FRAG_THRESHOLD); 309 if (err) 310 wdev->wiphy->frag_threshold = ofrag; 311 return err; 312 } 313 314 int cfg80211_wext_giwfrag(struct net_device *dev, 315 struct iw_request_info *info, 316 union iwreq_data *wrqu, char *extra) 317 { 318 struct iw_param *frag = &wrqu->frag; 319 struct wireless_dev *wdev = dev->ieee80211_ptr; 320 321 frag->value = wdev->wiphy->frag_threshold; 322 frag->disabled = frag->value == (u32) -1; 323 frag->fixed = 1; 324 325 return 0; 326 } 327 328 static int cfg80211_wext_siwretry(struct net_device *dev, 329 struct iw_request_info *info, 330 union iwreq_data *wrqu, char *extra) 331 { 332 struct iw_param *retry = &wrqu->retry; 333 struct wireless_dev *wdev = dev->ieee80211_ptr; 334 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 335 u32 changed = 0; 336 u8 olong = wdev->wiphy->retry_long; 337 u8 oshort = wdev->wiphy->retry_short; 338 int err; 339 340 if (retry->disabled || retry->value < 1 || retry->value > 255 || 341 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT) 342 return -EINVAL; 343 344 guard(wiphy)(&rdev->wiphy); 345 346 if (retry->flags & IW_RETRY_LONG) { 347 wdev->wiphy->retry_long = retry->value; 348 changed |= WIPHY_PARAM_RETRY_LONG; 349 } else if (retry->flags & IW_RETRY_SHORT) { 350 wdev->wiphy->retry_short = retry->value; 351 changed |= WIPHY_PARAM_RETRY_SHORT; 352 } else { 353 wdev->wiphy->retry_short = retry->value; 354 wdev->wiphy->retry_long = retry->value; 355 changed |= WIPHY_PARAM_RETRY_LONG; 356 changed |= WIPHY_PARAM_RETRY_SHORT; 357 } 358 359 err = rdev_set_wiphy_params(rdev, -1, changed); 360 if (err) { 361 wdev->wiphy->retry_short = oshort; 362 wdev->wiphy->retry_long = olong; 363 } 364 365 return err; 366 } 367 368 int cfg80211_wext_giwretry(struct net_device *dev, 369 struct iw_request_info *info, 370 union iwreq_data *wrqu, char *extra) 371 { 372 struct iw_param *retry = &wrqu->retry; 373 struct wireless_dev *wdev = dev->ieee80211_ptr; 374 375 retry->disabled = 0; 376 377 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) { 378 /* 379 * First return short value, iwconfig will ask long value 380 * later if needed 381 */ 382 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT; 383 retry->value = wdev->wiphy->retry_short; 384 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short) 385 retry->flags |= IW_RETRY_LONG; 386 387 return 0; 388 } 389 390 if (retry->flags & IW_RETRY_LONG) { 391 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG; 392 retry->value = wdev->wiphy->retry_long; 393 } 394 395 return 0; 396 } 397 398 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 399 struct net_device *dev, bool pairwise, 400 const u8 *addr, bool remove, bool tx_key, 401 int idx, struct key_params *params) 402 { 403 struct wireless_dev *wdev = dev->ieee80211_ptr; 404 enum nl80211_key_type key_type = 405 pairwise ? NL80211_KEYTYPE_PAIRWISE : NL80211_KEYTYPE_GROUP; 406 int err, i; 407 bool rejoin = false; 408 409 if (wdev->valid_links) 410 return -EINVAL; 411 412 if (pairwise && !addr) 413 return -EINVAL; 414 415 /* 416 * In many cases we won't actually need this, but it's better 417 * to do it first in case the allocation fails. Don't use wext. 418 */ 419 if (!wdev->wext.keys) { 420 wdev->wext.keys = kzalloc_obj(*wdev->wext.keys); 421 if (!wdev->wext.keys) 422 return -ENOMEM; 423 for (i = 0; i < 4; i++) 424 wdev->wext.keys->params[i].key = 425 wdev->wext.keys->data[i]; 426 } 427 428 if (wdev->iftype != NL80211_IFTYPE_ADHOC && 429 wdev->iftype != NL80211_IFTYPE_STATION) 430 return -EOPNOTSUPP; 431 432 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 433 if (!wdev->connected) 434 return -ENOLINK; 435 436 if (!rdev->ops->set_default_mgmt_key) 437 return -EOPNOTSUPP; 438 439 if (idx < 4 || idx > 5) 440 return -EINVAL; 441 } else if (idx < 0 || idx > 3) 442 return -EINVAL; 443 444 if (remove) { 445 err = 0; 446 if (wdev->connected || 447 (wdev->iftype == NL80211_IFTYPE_ADHOC && 448 wdev->u.ibss.current_bss)) { 449 /* 450 * If removing the current TX key, we will need to 451 * join a new IBSS without the privacy bit clear. 452 */ 453 if (idx == wdev->wext.default_key && 454 wdev->iftype == NL80211_IFTYPE_ADHOC) { 455 cfg80211_leave_ibss(rdev, wdev->netdev, true); 456 rejoin = true; 457 } 458 459 if (!cfg80211_valid_key_idx(wdev, idx, key_type, addr)) 460 err = -ENOENT; 461 else 462 err = rdev_del_key(rdev, wdev, -1, idx, 463 key_type, addr); 464 } 465 wdev->wext.connect.privacy = false; 466 /* 467 * Applications using wireless extensions expect to be 468 * able to delete keys that don't exist, so allow that. 469 */ 470 if (err == -ENOENT) 471 err = 0; 472 if (!err) { 473 if (!addr && idx < 4) { 474 memset(wdev->wext.keys->data[idx], 0, 475 sizeof(wdev->wext.keys->data[idx])); 476 wdev->wext.keys->params[idx].key_len = 0; 477 wdev->wext.keys->params[idx].cipher = 0; 478 } 479 if (idx == wdev->wext.default_key) 480 wdev->wext.default_key = -1; 481 else if (idx == wdev->wext.default_mgmt_key) 482 wdev->wext.default_mgmt_key = -1; 483 } 484 485 if (!err && rejoin) 486 err = cfg80211_ibss_wext_join(rdev, wdev); 487 488 return err; 489 } 490 491 if (addr) 492 tx_key = false; 493 494 if (cfg80211_validate_key_settings(rdev, wdev, params, idx, 495 pairwise, addr)) 496 return -EINVAL; 497 498 err = 0; 499 if (wdev->connected || 500 (wdev->iftype == NL80211_IFTYPE_ADHOC && 501 wdev->u.ibss.current_bss)) 502 err = rdev_add_key(rdev, wdev, -1, idx, pairwise, addr, params); 503 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 && 504 params->cipher != WLAN_CIPHER_SUITE_WEP104) 505 return -EINVAL; 506 if (err) 507 return err; 508 509 /* 510 * We only need to store WEP keys, since they're the only keys that 511 * can be set before a connection is established and persist after 512 * disconnecting. 513 */ 514 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 || 515 params->cipher == WLAN_CIPHER_SUITE_WEP104)) { 516 wdev->wext.keys->params[idx] = *params; 517 memcpy(wdev->wext.keys->data[idx], 518 params->key, params->key_len); 519 wdev->wext.keys->params[idx].key = 520 wdev->wext.keys->data[idx]; 521 } 522 523 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 || 524 params->cipher == WLAN_CIPHER_SUITE_WEP104) && 525 (tx_key || (!addr && wdev->wext.default_key == -1))) { 526 if (wdev->connected || 527 (wdev->iftype == NL80211_IFTYPE_ADHOC && 528 wdev->u.ibss.current_bss)) { 529 /* 530 * If we are getting a new TX key from not having 531 * had one before we need to join a new IBSS with 532 * the privacy bit set. 533 */ 534 if (wdev->iftype == NL80211_IFTYPE_ADHOC && 535 wdev->wext.default_key == -1) { 536 cfg80211_leave_ibss(rdev, wdev->netdev, true); 537 rejoin = true; 538 } 539 err = rdev_set_default_key(rdev, dev, -1, idx, true, 540 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->connected || 553 (wdev->iftype == NL80211_IFTYPE_ADHOC && 554 wdev->u.ibss.current_bss)) 555 err = rdev_set_default_mgmt_key(rdev, wdev, -1, idx); 556 if (!err) 557 wdev->wext.default_mgmt_key = idx; 558 return err; 559 } 560 561 return 0; 562 } 563 564 static int cfg80211_wext_siwencode(struct net_device *dev, 565 struct iw_request_info *info, 566 union iwreq_data *wrqu, char *keybuf) 567 { 568 struct iw_point *erq = &wrqu->encoding; 569 struct wireless_dev *wdev = dev->ieee80211_ptr; 570 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 571 struct key_params params; 572 bool remove = false; 573 int idx; 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 guard(wiphy)(&rdev->wiphy); 586 if (wdev->valid_links) 587 return -EOPNOTSUPP; 588 589 idx = erq->flags & IW_ENCODE_INDEX; 590 if (idx == 0) { 591 idx = wdev->wext.default_key; 592 if (idx < 0) 593 idx = 0; 594 } else if (idx < 1 || idx > 4) { 595 return -EINVAL; 596 } else { 597 idx--; 598 } 599 600 if (erq->flags & IW_ENCODE_DISABLED) 601 remove = true; 602 else if (erq->length == 0) { 603 /* No key data - just set the default TX key index */ 604 int err = 0; 605 606 if (wdev->connected || 607 (wdev->iftype == NL80211_IFTYPE_ADHOC && 608 wdev->u.ibss.current_bss)) 609 err = rdev_set_default_key(rdev, dev, -1, idx, true, 610 true); 611 if (!err) 612 wdev->wext.default_key = idx; 613 return err; 614 } 615 616 memset(¶ms, 0, sizeof(params)); 617 params.key = keybuf; 618 params.key_len = erq->length; 619 if (erq->length == 5) 620 params.cipher = WLAN_CIPHER_SUITE_WEP40; 621 else if (erq->length == 13) 622 params.cipher = WLAN_CIPHER_SUITE_WEP104; 623 else if (!remove) 624 return -EINVAL; 625 626 return cfg80211_set_encryption(rdev, dev, false, NULL, remove, 627 wdev->wext.default_key == -1, 628 idx, ¶ms); 629 } 630 631 static int cfg80211_wext_siwencodeext(struct net_device *dev, 632 struct iw_request_info *info, 633 union iwreq_data *wrqu, char *extra) 634 { 635 struct iw_point *erq = &wrqu->encoding; 636 struct wireless_dev *wdev = dev->ieee80211_ptr; 637 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 638 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; 639 const u8 *addr; 640 int idx; 641 bool remove = false; 642 struct key_params params; 643 u32 cipher; 644 645 if (wdev->iftype != NL80211_IFTYPE_STATION && 646 wdev->iftype != NL80211_IFTYPE_ADHOC) 647 return -EOPNOTSUPP; 648 649 /* no use -- only MFP (set_default_mgmt_key) is optional */ 650 if (!rdev->ops->del_key || 651 !rdev->ops->add_key || 652 !rdev->ops->set_default_key) 653 return -EOPNOTSUPP; 654 655 if (wdev->valid_links) 656 return -EOPNOTSUPP; 657 658 switch (ext->alg) { 659 case IW_ENCODE_ALG_NONE: 660 remove = true; 661 cipher = 0; 662 break; 663 case IW_ENCODE_ALG_WEP: 664 if (ext->key_len == 5) 665 cipher = WLAN_CIPHER_SUITE_WEP40; 666 else if (ext->key_len == 13) 667 cipher = WLAN_CIPHER_SUITE_WEP104; 668 else 669 return -EINVAL; 670 break; 671 case IW_ENCODE_ALG_TKIP: 672 cipher = WLAN_CIPHER_SUITE_TKIP; 673 break; 674 case IW_ENCODE_ALG_CCMP: 675 cipher = WLAN_CIPHER_SUITE_CCMP; 676 break; 677 case IW_ENCODE_ALG_AES_CMAC: 678 cipher = WLAN_CIPHER_SUITE_AES_CMAC; 679 break; 680 default: 681 return -EOPNOTSUPP; 682 } 683 684 if (erq->flags & IW_ENCODE_DISABLED) 685 remove = true; 686 687 idx = erq->flags & IW_ENCODE_INDEX; 688 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 689 if (idx < 5 || idx > 6) { 690 idx = wdev->wext.default_mgmt_key; 691 if (idx < 0) 692 return -EINVAL; 693 } else 694 idx--; 695 } else { 696 if (idx < 1 || idx > 4) { 697 idx = wdev->wext.default_key; 698 if (idx < 0) 699 return -EINVAL; 700 } else 701 idx--; 702 } 703 704 addr = ext->addr.sa_data; 705 if (is_broadcast_ether_addr(addr)) 706 addr = NULL; 707 708 memset(¶ms, 0, sizeof(params)); 709 params.key = ext->key; 710 params.key_len = ext->key_len; 711 params.cipher = cipher; 712 713 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { 714 params.seq = ext->rx_seq; 715 params.seq_len = 6; 716 } 717 718 guard(wiphy)(wdev->wiphy); 719 720 return cfg80211_set_encryption(rdev, dev, 721 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY), 722 addr, remove, 723 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, 724 idx, ¶ms); 725 } 726 727 static int cfg80211_wext_giwencode(struct net_device *dev, 728 struct iw_request_info *info, 729 union iwreq_data *wrqu, char *keybuf) 730 { 731 struct iw_point *erq = &wrqu->encoding; 732 struct wireless_dev *wdev = dev->ieee80211_ptr; 733 int idx; 734 735 if (wdev->iftype != NL80211_IFTYPE_STATION && 736 wdev->iftype != NL80211_IFTYPE_ADHOC) 737 return -EOPNOTSUPP; 738 739 idx = erq->flags & IW_ENCODE_INDEX; 740 if (idx == 0) { 741 idx = wdev->wext.default_key; 742 if (idx < 0) 743 idx = 0; 744 } else if (idx < 1 || idx > 4) 745 return -EINVAL; 746 else 747 idx--; 748 749 erq->flags = idx + 1; 750 751 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) { 752 erq->flags |= IW_ENCODE_DISABLED; 753 erq->length = 0; 754 return 0; 755 } 756 757 erq->length = min_t(size_t, erq->length, 758 wdev->wext.keys->params[idx].key_len); 759 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length); 760 erq->flags |= IW_ENCODE_ENABLED; 761 762 return 0; 763 } 764 765 static int cfg80211_wext_siwfreq(struct net_device *dev, 766 struct iw_request_info *info, 767 union iwreq_data *wrqu, char *extra) 768 { 769 struct iw_freq *wextfreq = &wrqu->freq; 770 struct wireless_dev *wdev = dev->ieee80211_ptr; 771 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 772 struct cfg80211_chan_def chandef = { 773 .width = NL80211_CHAN_WIDTH_20_NOHT, 774 }; 775 int freq; 776 777 guard(wiphy)(&rdev->wiphy); 778 779 switch (wdev->iftype) { 780 case NL80211_IFTYPE_STATION: 781 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra); 782 case NL80211_IFTYPE_ADHOC: 783 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra); 784 case NL80211_IFTYPE_MONITOR: 785 freq = cfg80211_wext_freq(wextfreq); 786 if (freq < 0) 787 return freq; 788 if (freq == 0) 789 return -EINVAL; 790 791 chandef.center_freq1 = freq; 792 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 793 if (!chandef.chan) 794 return -EINVAL; 795 if (!cfg80211_chandef_valid(&chandef)) 796 return -EINVAL; 797 return cfg80211_set_monitor_channel(rdev, dev, &chandef); 798 case NL80211_IFTYPE_MESH_POINT: 799 freq = cfg80211_wext_freq(wextfreq); 800 if (freq < 0) 801 return freq; 802 if (freq == 0) 803 return -EINVAL; 804 chandef.center_freq1 = freq; 805 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 806 if (!chandef.chan) 807 return -EINVAL; 808 return cfg80211_set_mesh_channel(rdev, wdev, &chandef); 809 default: 810 return -EOPNOTSUPP; 811 } 812 } 813 814 static int cfg80211_wext_giwfreq(struct net_device *dev, 815 struct iw_request_info *info, 816 union iwreq_data *wrqu, char *extra) 817 { 818 struct iw_freq *freq = &wrqu->freq; 819 struct wireless_dev *wdev = dev->ieee80211_ptr; 820 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 821 struct cfg80211_chan_def chandef = {}; 822 int ret; 823 824 guard(wiphy)(&rdev->wiphy); 825 826 switch (wdev->iftype) { 827 case NL80211_IFTYPE_STATION: 828 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra); 829 case NL80211_IFTYPE_ADHOC: 830 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); 831 case NL80211_IFTYPE_MONITOR: 832 if (!rdev->ops->get_channel) 833 return -EINVAL; 834 835 ret = rdev_get_channel(rdev, wdev, 0, &chandef); 836 if (ret) 837 return ret; 838 freq->m = chandef.chan->center_freq; 839 freq->e = 6; 840 return ret; 841 default: 842 return -EINVAL; 843 } 844 } 845 846 static int cfg80211_wext_siwtxpower(struct net_device *dev, 847 struct iw_request_info *info, 848 union iwreq_data *data, char *extra) 849 { 850 struct wireless_dev *wdev = dev->ieee80211_ptr; 851 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 852 enum nl80211_tx_power_setting type; 853 int dbm = 0; 854 855 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 856 return -EINVAL; 857 if (data->txpower.flags & IW_TXPOW_RANGE) 858 return -EINVAL; 859 860 if (!rdev->ops->set_tx_power) 861 return -EOPNOTSUPP; 862 863 /* only change when not disabling */ 864 if (!data->txpower.disabled) { 865 rfkill_set_sw_state(rdev->wiphy.rfkill, false); 866 867 if (data->txpower.fixed) { 868 /* 869 * wext doesn't support negative values, see 870 * below where it's for automatic 871 */ 872 if (data->txpower.value < 0) 873 return -EINVAL; 874 dbm = data->txpower.value; 875 type = NL80211_TX_POWER_FIXED; 876 /* TODO: do regulatory check! */ 877 } else { 878 /* 879 * Automatic power level setting, max being the value 880 * passed in from userland. 881 */ 882 if (data->txpower.value < 0) { 883 type = NL80211_TX_POWER_AUTOMATIC; 884 } else { 885 dbm = data->txpower.value; 886 type = NL80211_TX_POWER_LIMITED; 887 } 888 } 889 } else { 890 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true)) 891 schedule_work(&rdev->rfkill_block); 892 return 0; 893 } 894 895 guard(wiphy)(&rdev->wiphy); 896 897 return rdev_set_tx_power(rdev, wdev, -1, type, DBM_TO_MBM(dbm)); 898 } 899 900 static int cfg80211_wext_giwtxpower(struct net_device *dev, 901 struct iw_request_info *info, 902 union iwreq_data *data, char *extra) 903 { 904 struct wireless_dev *wdev = dev->ieee80211_ptr; 905 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 906 int err, val; 907 908 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 909 return -EINVAL; 910 if (data->txpower.flags & IW_TXPOW_RANGE) 911 return -EINVAL; 912 913 if (!rdev->ops->get_tx_power) 914 return -EOPNOTSUPP; 915 916 scoped_guard(wiphy, &rdev->wiphy) { 917 err = rdev_get_tx_power(rdev, wdev, -1, 0, &val); 918 } 919 if (err) 920 return err; 921 922 /* well... oh well */ 923 data->txpower.fixed = 1; 924 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill); 925 data->txpower.value = val; 926 data->txpower.flags = IW_TXPOW_DBM; 927 928 return 0; 929 } 930 931 static int cfg80211_set_auth_alg(struct wireless_dev *wdev, 932 s32 auth_alg) 933 { 934 int nr_alg = 0; 935 936 if (!auth_alg) 937 return -EINVAL; 938 939 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM | 940 IW_AUTH_ALG_SHARED_KEY | 941 IW_AUTH_ALG_LEAP)) 942 return -EINVAL; 943 944 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) { 945 nr_alg++; 946 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; 947 } 948 949 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) { 950 nr_alg++; 951 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY; 952 } 953 954 if (auth_alg & IW_AUTH_ALG_LEAP) { 955 nr_alg++; 956 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP; 957 } 958 959 if (nr_alg > 1) 960 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 961 962 return 0; 963 } 964 965 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions) 966 { 967 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA | 968 IW_AUTH_WPA_VERSION_WPA2| 969 IW_AUTH_WPA_VERSION_DISABLED)) 970 return -EINVAL; 971 972 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) && 973 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA| 974 IW_AUTH_WPA_VERSION_WPA2))) 975 return -EINVAL; 976 977 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) 978 wdev->wext.connect.crypto.wpa_versions &= 979 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2); 980 981 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA) 982 wdev->wext.connect.crypto.wpa_versions |= 983 NL80211_WPA_VERSION_1; 984 985 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2) 986 wdev->wext.connect.crypto.wpa_versions |= 987 NL80211_WPA_VERSION_2; 988 989 return 0; 990 } 991 992 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher) 993 { 994 if (cipher & IW_AUTH_CIPHER_WEP40) 995 wdev->wext.connect.crypto.cipher_group = 996 WLAN_CIPHER_SUITE_WEP40; 997 else if (cipher & IW_AUTH_CIPHER_WEP104) 998 wdev->wext.connect.crypto.cipher_group = 999 WLAN_CIPHER_SUITE_WEP104; 1000 else if (cipher & IW_AUTH_CIPHER_TKIP) 1001 wdev->wext.connect.crypto.cipher_group = 1002 WLAN_CIPHER_SUITE_TKIP; 1003 else if (cipher & IW_AUTH_CIPHER_CCMP) 1004 wdev->wext.connect.crypto.cipher_group = 1005 WLAN_CIPHER_SUITE_CCMP; 1006 else if (cipher & IW_AUTH_CIPHER_AES_CMAC) 1007 wdev->wext.connect.crypto.cipher_group = 1008 WLAN_CIPHER_SUITE_AES_CMAC; 1009 else if (cipher & IW_AUTH_CIPHER_NONE) 1010 wdev->wext.connect.crypto.cipher_group = 0; 1011 else 1012 return -EINVAL; 1013 1014 return 0; 1015 } 1016 1017 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher) 1018 { 1019 int nr_ciphers = 0; 1020 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise; 1021 1022 if (cipher & IW_AUTH_CIPHER_WEP40) { 1023 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40; 1024 nr_ciphers++; 1025 } 1026 1027 if (cipher & IW_AUTH_CIPHER_WEP104) { 1028 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104; 1029 nr_ciphers++; 1030 } 1031 1032 if (cipher & IW_AUTH_CIPHER_TKIP) { 1033 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP; 1034 nr_ciphers++; 1035 } 1036 1037 if (cipher & IW_AUTH_CIPHER_CCMP) { 1038 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP; 1039 nr_ciphers++; 1040 } 1041 1042 if (cipher & IW_AUTH_CIPHER_AES_CMAC) { 1043 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC; 1044 nr_ciphers++; 1045 } 1046 1047 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5); 1048 1049 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers; 1050 1051 return 0; 1052 } 1053 1054 1055 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) 1056 { 1057 int nr_akm_suites = 0; 1058 1059 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X | 1060 IW_AUTH_KEY_MGMT_PSK)) 1061 return -EINVAL; 1062 1063 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) { 1064 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1065 WLAN_AKM_SUITE_8021X; 1066 nr_akm_suites++; 1067 } 1068 1069 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) { 1070 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1071 WLAN_AKM_SUITE_PSK; 1072 nr_akm_suites++; 1073 } 1074 1075 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites; 1076 1077 return 0; 1078 } 1079 1080 static int cfg80211_wext_siwauth(struct net_device *dev, 1081 struct iw_request_info *info, 1082 union iwreq_data *wrqu, char *extra) 1083 { 1084 struct iw_param *data = &wrqu->param; 1085 struct wireless_dev *wdev = dev->ieee80211_ptr; 1086 1087 if (wdev->iftype != NL80211_IFTYPE_STATION) 1088 return -EOPNOTSUPP; 1089 1090 switch (data->flags & IW_AUTH_INDEX) { 1091 case IW_AUTH_PRIVACY_INVOKED: 1092 wdev->wext.connect.privacy = data->value; 1093 return 0; 1094 case IW_AUTH_WPA_VERSION: 1095 return cfg80211_set_wpa_version(wdev, data->value); 1096 case IW_AUTH_CIPHER_GROUP: 1097 return cfg80211_set_cipher_group(wdev, data->value); 1098 case IW_AUTH_KEY_MGMT: 1099 return cfg80211_set_key_mgt(wdev, data->value); 1100 case IW_AUTH_CIPHER_PAIRWISE: 1101 return cfg80211_set_cipher_pairwise(wdev, data->value); 1102 case IW_AUTH_80211_AUTH_ALG: 1103 return cfg80211_set_auth_alg(wdev, data->value); 1104 case IW_AUTH_WPA_ENABLED: 1105 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1106 case IW_AUTH_DROP_UNENCRYPTED: 1107 case IW_AUTH_MFP: 1108 return 0; 1109 default: 1110 return -EOPNOTSUPP; 1111 } 1112 } 1113 1114 static int cfg80211_wext_giwauth(struct net_device *dev, 1115 struct iw_request_info *info, 1116 union iwreq_data *wrqu, char *extra) 1117 { 1118 /* XXX: what do we need? */ 1119 1120 return -EOPNOTSUPP; 1121 } 1122 1123 static int cfg80211_wext_siwpower(struct net_device *dev, 1124 struct iw_request_info *info, 1125 union iwreq_data *wrqu, char *extra) 1126 { 1127 struct iw_param *wrq = &wrqu->power; 1128 struct wireless_dev *wdev = dev->ieee80211_ptr; 1129 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1130 bool ps; 1131 int timeout = wdev->ps_timeout; 1132 int err; 1133 1134 if (wdev->iftype != NL80211_IFTYPE_STATION) 1135 return -EINVAL; 1136 1137 if (!rdev->ops->set_power_mgmt) 1138 return -EOPNOTSUPP; 1139 1140 if (wrq->disabled) { 1141 ps = false; 1142 } else { 1143 switch (wrq->flags & IW_POWER_MODE) { 1144 case IW_POWER_ON: /* If not specified */ 1145 case IW_POWER_MODE: /* If set all mask */ 1146 case IW_POWER_ALL_R: /* If explicitly state all */ 1147 ps = true; 1148 break; 1149 default: /* Otherwise we ignore */ 1150 return -EINVAL; 1151 } 1152 1153 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT)) 1154 return -EINVAL; 1155 1156 if (wrq->flags & IW_POWER_TIMEOUT) 1157 timeout = wrq->value / 1000; 1158 } 1159 1160 guard(wiphy)(&rdev->wiphy); 1161 1162 err = rdev_set_power_mgmt(rdev, dev, ps, timeout); 1163 if (err) 1164 return err; 1165 1166 wdev->ps = ps; 1167 wdev->ps_timeout = timeout; 1168 1169 return 0; 1170 1171 } 1172 1173 static int cfg80211_wext_giwpower(struct net_device *dev, 1174 struct iw_request_info *info, 1175 union iwreq_data *wrqu, char *extra) 1176 { 1177 struct iw_param *wrq = &wrqu->power; 1178 struct wireless_dev *wdev = dev->ieee80211_ptr; 1179 1180 wrq->disabled = !wdev->ps; 1181 1182 return 0; 1183 } 1184 1185 static int cfg80211_wext_siwrate(struct net_device *dev, 1186 struct iw_request_info *info, 1187 union iwreq_data *wrqu, char *extra) 1188 { 1189 struct iw_param *rate = &wrqu->bitrate; 1190 struct wireless_dev *wdev = dev->ieee80211_ptr; 1191 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1192 struct cfg80211_bitrate_mask mask; 1193 u32 fixed, maxrate; 1194 struct ieee80211_supported_band *sband; 1195 bool match = false; 1196 int band, ridx; 1197 1198 if (!rdev->ops->set_bitrate_mask) 1199 return -EOPNOTSUPP; 1200 1201 memset(&mask, 0, sizeof(mask)); 1202 fixed = 0; 1203 maxrate = (u32)-1; 1204 1205 if (rate->value < 0) { 1206 /* nothing */ 1207 } else if (rate->fixed) { 1208 fixed = rate->value / 100000; 1209 } else { 1210 maxrate = rate->value / 100000; 1211 } 1212 1213 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1214 sband = wdev->wiphy->bands[band]; 1215 if (sband == NULL) 1216 continue; 1217 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 1218 struct ieee80211_rate *srate = &sband->bitrates[ridx]; 1219 if (fixed == srate->bitrate) { 1220 mask.control[band].legacy = 1 << ridx; 1221 match = true; 1222 break; 1223 } 1224 if (srate->bitrate <= maxrate) { 1225 mask.control[band].legacy |= 1 << ridx; 1226 match = true; 1227 } 1228 } 1229 } 1230 1231 if (!match) 1232 return -EINVAL; 1233 1234 guard(wiphy)(&rdev->wiphy); 1235 1236 if (dev->ieee80211_ptr->valid_links) 1237 return -EOPNOTSUPP; 1238 1239 return rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask); 1240 } 1241 1242 static int cfg80211_wext_giwrate(struct net_device *dev, 1243 struct iw_request_info *info, 1244 union iwreq_data *wrqu, char *extra) 1245 { 1246 struct iw_param *rate = &wrqu->bitrate; 1247 struct wireless_dev *wdev = dev->ieee80211_ptr; 1248 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1249 struct station_info sinfo = {}; 1250 u8 addr[ETH_ALEN]; 1251 int err; 1252 1253 if (wdev->iftype != NL80211_IFTYPE_STATION) 1254 return -EOPNOTSUPP; 1255 1256 if (!rdev->ops->get_station) 1257 return -EOPNOTSUPP; 1258 1259 err = 0; 1260 if (!wdev->valid_links && wdev->links[0].client.current_bss) 1261 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid, 1262 ETH_ALEN); 1263 else 1264 err = -EOPNOTSUPP; 1265 if (err) 1266 return err; 1267 1268 scoped_guard(wiphy, &rdev->wiphy) { 1269 err = rdev_get_station(rdev, wdev, addr, &sinfo); 1270 } 1271 if (err) 1272 return err; 1273 1274 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { 1275 err = -EOPNOTSUPP; 1276 goto free; 1277 } 1278 1279 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); 1280 1281 free: 1282 cfg80211_sinfo_release_content(&sinfo); 1283 return err; 1284 } 1285 1286 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ 1287 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) 1288 { 1289 struct wireless_dev *wdev = dev->ieee80211_ptr; 1290 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1291 /* we are under RTNL - globally locked - so can use static structs */ 1292 static struct iw_statistics wstats; 1293 static struct station_info sinfo = {}; 1294 u8 bssid[ETH_ALEN]; 1295 int ret; 1296 1297 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) 1298 return NULL; 1299 1300 if (!rdev->ops->get_station) 1301 return NULL; 1302 1303 /* Grab BSSID of current BSS, if any */ 1304 wiphy_lock(&rdev->wiphy); 1305 if (wdev->valid_links || !wdev->links[0].client.current_bss) { 1306 wiphy_unlock(&rdev->wiphy); 1307 return NULL; 1308 } 1309 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN); 1310 1311 memset(&sinfo, 0, sizeof(sinfo)); 1312 1313 ret = rdev_get_station(rdev, wdev, bssid, &sinfo); 1314 wiphy_unlock(&rdev->wiphy); 1315 1316 if (ret) 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_ULL(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 fallthrough; 1337 case CFG80211_SIGNAL_TYPE_UNSPEC: 1338 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1339 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1340 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1341 wstats.qual.level = sinfo.signal; 1342 wstats.qual.qual = sinfo.signal; 1343 break; 1344 } 1345 fallthrough; 1346 default: 1347 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID; 1348 wstats.qual.updated |= IW_QUAL_QUAL_INVALID; 1349 } 1350 1351 wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1352 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) 1353 wstats.discard.misc = sinfo.rx_dropped_misc; 1354 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) 1355 wstats.discard.retries = sinfo.tx_failed; 1356 1357 cfg80211_sinfo_release_content(&sinfo); 1358 1359 return &wstats; 1360 } 1361 1362 static int cfg80211_wext_siwap(struct net_device *dev, 1363 struct iw_request_info *info, 1364 union iwreq_data *wrqu, char *extra) 1365 { 1366 struct sockaddr *ap_addr = &wrqu->ap_addr; 1367 struct wireless_dev *wdev = dev->ieee80211_ptr; 1368 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1369 1370 guard(wiphy)(&rdev->wiphy); 1371 1372 switch (wdev->iftype) { 1373 case NL80211_IFTYPE_ADHOC: 1374 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); 1375 case NL80211_IFTYPE_STATION: 1376 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra); 1377 default: 1378 return -EOPNOTSUPP; 1379 } 1380 } 1381 1382 static int cfg80211_wext_giwap(struct net_device *dev, 1383 struct iw_request_info *info, 1384 union iwreq_data *wrqu, char *extra) 1385 { 1386 struct sockaddr *ap_addr = &wrqu->ap_addr; 1387 struct wireless_dev *wdev = dev->ieee80211_ptr; 1388 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1389 1390 guard(wiphy)(&rdev->wiphy); 1391 1392 switch (wdev->iftype) { 1393 case NL80211_IFTYPE_ADHOC: 1394 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); 1395 case NL80211_IFTYPE_STATION: 1396 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra); 1397 default: 1398 return -EOPNOTSUPP; 1399 } 1400 } 1401 1402 static int cfg80211_wext_siwessid(struct net_device *dev, 1403 struct iw_request_info *info, 1404 union iwreq_data *wrqu, char *ssid) 1405 { 1406 struct iw_point *data = &wrqu->data; 1407 struct wireless_dev *wdev = dev->ieee80211_ptr; 1408 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1409 1410 guard(wiphy)(&rdev->wiphy); 1411 1412 switch (wdev->iftype) { 1413 case NL80211_IFTYPE_ADHOC: 1414 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid); 1415 case NL80211_IFTYPE_STATION: 1416 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid); 1417 default: 1418 return -EOPNOTSUPP; 1419 } 1420 } 1421 1422 static int cfg80211_wext_giwessid(struct net_device *dev, 1423 struct iw_request_info *info, 1424 union iwreq_data *wrqu, char *ssid) 1425 { 1426 struct iw_point *data = &wrqu->data; 1427 struct wireless_dev *wdev = dev->ieee80211_ptr; 1428 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1429 1430 data->flags = 0; 1431 data->length = 0; 1432 1433 guard(wiphy)(&rdev->wiphy); 1434 1435 switch (wdev->iftype) { 1436 case NL80211_IFTYPE_ADHOC: 1437 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid); 1438 case NL80211_IFTYPE_STATION: 1439 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid); 1440 default: 1441 return -EOPNOTSUPP; 1442 } 1443 } 1444 1445 static int cfg80211_wext_siwpmksa(struct net_device *dev, 1446 struct iw_request_info *info, 1447 union iwreq_data *wrqu, char *extra) 1448 { 1449 struct wireless_dev *wdev = dev->ieee80211_ptr; 1450 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1451 struct cfg80211_pmksa cfg_pmksa; 1452 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra; 1453 1454 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa)); 1455 1456 if (wdev->iftype != NL80211_IFTYPE_STATION) 1457 return -EINVAL; 1458 1459 cfg_pmksa.bssid = pmksa->bssid.sa_data; 1460 cfg_pmksa.pmkid = pmksa->pmkid; 1461 1462 guard(wiphy)(&rdev->wiphy); 1463 1464 switch (pmksa->cmd) { 1465 case IW_PMKSA_ADD: 1466 if (!rdev->ops->set_pmksa) 1467 return -EOPNOTSUPP; 1468 1469 return rdev_set_pmksa(rdev, dev, &cfg_pmksa); 1470 case IW_PMKSA_REMOVE: 1471 if (!rdev->ops->del_pmksa) 1472 return -EOPNOTSUPP; 1473 1474 return rdev_del_pmksa(rdev, dev, &cfg_pmksa); 1475 case IW_PMKSA_FLUSH: 1476 if (!rdev->ops->flush_pmksa) 1477 return -EOPNOTSUPP; 1478 1479 return rdev_flush_pmksa(rdev, dev); 1480 default: 1481 return -EOPNOTSUPP; 1482 } 1483 } 1484 1485 static const iw_handler cfg80211_handlers[] = { 1486 IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname), 1487 IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq), 1488 IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq), 1489 IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode), 1490 IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode), 1491 IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange), 1492 IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap), 1493 IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap), 1494 IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme), 1495 IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan), 1496 IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan), 1497 IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid), 1498 IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid), 1499 IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate), 1500 IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate), 1501 IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts), 1502 IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts), 1503 IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag), 1504 IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag), 1505 IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower), 1506 IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower), 1507 IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry), 1508 IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry), 1509 IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode), 1510 IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode), 1511 IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower), 1512 IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower), 1513 IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie), 1514 IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth), 1515 IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth), 1516 IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext), 1517 IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa), 1518 }; 1519 1520 const struct iw_handler_def cfg80211_wext_handler = { 1521 .num_standard = ARRAY_SIZE(cfg80211_handlers), 1522 .standard = cfg80211_handlers, 1523 .get_wireless_stats = cfg80211_wireless_stats, 1524 }; 1525