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 <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 26 int cfg80211_wext_giwname(struct net_device *dev, 27 struct iw_request_info *info, 28 union iwreq_data *wrqu, char *extra) 29 { 30 strcpy(wrqu->name, "IEEE 802.11"); 31 return 0; 32 } 33 34 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 35 union iwreq_data *wrqu, char *extra) 36 { 37 __u32 *mode = &wrqu->mode; 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 43 rdev = wiphy_to_rdev(wdev->wiphy); 44 45 switch (*mode) { 46 case IW_MODE_INFRA: 47 type = NL80211_IFTYPE_STATION; 48 break; 49 case IW_MODE_ADHOC: 50 type = NL80211_IFTYPE_ADHOC; 51 break; 52 case IW_MODE_MONITOR: 53 type = NL80211_IFTYPE_MONITOR; 54 break; 55 default: 56 return -EINVAL; 57 } 58 59 if (type == wdev->iftype) 60 return 0; 61 62 memset(&vifparams, 0, sizeof(vifparams)); 63 64 guard(wiphy)(wdev->wiphy); 65 66 return cfg80211_change_iface(rdev, dev, type, &vifparams); 67 } 68 69 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 70 union iwreq_data *wrqu, char *extra) 71 { 72 __u32 *mode = &wrqu->mode; 73 struct wireless_dev *wdev = dev->ieee80211_ptr; 74 75 if (!wdev) 76 return -EOPNOTSUPP; 77 78 switch (wdev->iftype) { 79 case NL80211_IFTYPE_AP: 80 *mode = IW_MODE_MASTER; 81 break; 82 case NL80211_IFTYPE_STATION: 83 *mode = IW_MODE_INFRA; 84 break; 85 case NL80211_IFTYPE_ADHOC: 86 *mode = IW_MODE_ADHOC; 87 break; 88 case NL80211_IFTYPE_MONITOR: 89 *mode = IW_MODE_MONITOR; 90 break; 91 case NL80211_IFTYPE_WDS: 92 *mode = IW_MODE_REPEAT; 93 break; 94 case NL80211_IFTYPE_AP_VLAN: 95 *mode = IW_MODE_SECOND; /* FIXME */ 96 break; 97 default: 98 *mode = IW_MODE_AUTO; 99 break; 100 } 101 return 0; 102 } 103 104 105 int cfg80211_wext_giwrange(struct net_device *dev, 106 struct iw_request_info *info, 107 union iwreq_data *wrqu, char *extra) 108 { 109 struct iw_point *data = &wrqu->data; 110 struct wireless_dev *wdev = dev->ieee80211_ptr; 111 struct iw_range *range = (struct iw_range *) extra; 112 enum nl80211_band band; 113 int i, c = 0; 114 115 if (!wdev) 116 return -EOPNOTSUPP; 117 118 data->length = sizeof(struct iw_range); 119 memset(range, 0, sizeof(struct iw_range)); 120 121 range->we_version_compiled = WIRELESS_EXT; 122 range->we_version_source = 21; 123 range->retry_capa = IW_RETRY_LIMIT; 124 range->retry_flags = IW_RETRY_LIMIT; 125 range->min_retry = 0; 126 range->max_retry = 255; 127 range->min_rts = 0; 128 range->max_rts = 2347; 129 range->min_frag = 256; 130 range->max_frag = 2346; 131 132 range->max_encoding_tokens = 4; 133 134 range->max_qual.updated = IW_QUAL_NOISE_INVALID; 135 136 switch (wdev->wiphy->signal_type) { 137 case CFG80211_SIGNAL_TYPE_NONE: 138 break; 139 case CFG80211_SIGNAL_TYPE_MBM: 140 range->max_qual.level = (u8)-110; 141 range->max_qual.qual = 70; 142 range->avg_qual.qual = 35; 143 range->max_qual.updated |= IW_QUAL_DBM; 144 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 145 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 146 break; 147 case CFG80211_SIGNAL_TYPE_UNSPEC: 148 range->max_qual.level = 100; 149 range->max_qual.qual = 100; 150 range->avg_qual.qual = 50; 151 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 152 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 153 break; 154 } 155 156 range->avg_qual.level = range->max_qual.level / 2; 157 range->avg_qual.noise = range->max_qual.noise / 2; 158 range->avg_qual.updated = range->max_qual.updated; 159 160 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) { 161 switch (wdev->wiphy->cipher_suites[i]) { 162 case WLAN_CIPHER_SUITE_TKIP: 163 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP | 164 IW_ENC_CAPA_WPA); 165 break; 166 167 case WLAN_CIPHER_SUITE_CCMP: 168 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP | 169 IW_ENC_CAPA_WPA2); 170 break; 171 172 case WLAN_CIPHER_SUITE_WEP40: 173 range->encoding_size[range->num_encoding_sizes++] = 174 WLAN_KEY_LEN_WEP40; 175 break; 176 177 case WLAN_CIPHER_SUITE_WEP104: 178 range->encoding_size[range->num_encoding_sizes++] = 179 WLAN_KEY_LEN_WEP104; 180 break; 181 } 182 } 183 184 for (band = 0; band < NUM_NL80211_BANDS; band ++) { 185 struct ieee80211_supported_band *sband; 186 187 sband = wdev->wiphy->bands[band]; 188 189 if (!sband) 190 continue; 191 192 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) { 193 struct ieee80211_channel *chan = &sband->channels[i]; 194 195 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) { 196 range->freq[c].i = 197 ieee80211_frequency_to_channel( 198 chan->center_freq); 199 range->freq[c].m = chan->center_freq; 200 range->freq[c].e = 6; 201 c++; 202 } 203 } 204 } 205 range->num_channels = c; 206 range->num_frequency = c; 207 208 IW_EVENT_CAPA_SET_KERNEL(range->event_capa); 209 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP); 210 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN); 211 212 if (wdev->wiphy->max_scan_ssids > 0) 213 range->scan_capa |= IW_SCAN_CAPA_ESSID; 214 215 return 0; 216 } 217 218 219 /** 220 * cfg80211_wext_freq - get wext frequency for non-"auto" 221 * @freq: the wext freq encoding 222 * 223 * Returns: a frequency, or a negative error code, or 0 for auto. 224 */ 225 int cfg80211_wext_freq(struct iw_freq *freq) 226 { 227 /* 228 * Parse frequency - return 0 for auto and 229 * -EINVAL for impossible things. 230 */ 231 if (freq->e == 0) { 232 enum nl80211_band band = NL80211_BAND_2GHZ; 233 if (freq->m < 0) 234 return 0; 235 if (freq->m > 14) 236 band = NL80211_BAND_5GHZ; 237 return ieee80211_channel_to_frequency(freq->m, band); 238 } else { 239 int i, div = 1000000; 240 for (i = 0; i < freq->e; i++) 241 div /= 10; 242 if (div <= 0) 243 return -EINVAL; 244 return freq->m / div; 245 } 246 } 247 248 int cfg80211_wext_siwrts(struct net_device *dev, 249 struct iw_request_info *info, 250 union iwreq_data *wrqu, char *extra) 251 { 252 struct iw_param *rts = &wrqu->rts; 253 struct wireless_dev *wdev = dev->ieee80211_ptr; 254 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 255 u32 orts = wdev->wiphy->rts_threshold; 256 int err; 257 258 guard(wiphy)(&rdev->wiphy); 259 if (rts->disabled || !rts->fixed) 260 wdev->wiphy->rts_threshold = (u32) -1; 261 else if (rts->value < 0) 262 return -EINVAL; 263 else 264 wdev->wiphy->rts_threshold = rts->value; 265 266 err = rdev_set_wiphy_params(rdev, -1, WIPHY_PARAM_RTS_THRESHOLD); 267 if (err) 268 wdev->wiphy->rts_threshold = orts; 269 return err; 270 } 271 272 int cfg80211_wext_giwrts(struct net_device *dev, 273 struct iw_request_info *info, 274 union iwreq_data *wrqu, char *extra) 275 { 276 struct iw_param *rts = &wrqu->rts; 277 struct wireless_dev *wdev = dev->ieee80211_ptr; 278 279 rts->value = wdev->wiphy->rts_threshold; 280 rts->disabled = rts->value == (u32) -1; 281 rts->fixed = 1; 282 283 return 0; 284 } 285 286 int cfg80211_wext_siwfrag(struct net_device *dev, 287 struct iw_request_info *info, 288 union iwreq_data *wrqu, char *extra) 289 { 290 struct iw_param *frag = &wrqu->frag; 291 struct wireless_dev *wdev = dev->ieee80211_ptr; 292 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 293 u32 ofrag = wdev->wiphy->frag_threshold; 294 int err; 295 296 guard(wiphy)(&rdev->wiphy); 297 298 if (frag->disabled || !frag->fixed) { 299 wdev->wiphy->frag_threshold = (u32) -1; 300 } else if (frag->value < 256) { 301 return -EINVAL; 302 } else { 303 /* Fragment length must be even, so strip LSB. */ 304 wdev->wiphy->frag_threshold = frag->value & ~0x1; 305 } 306 307 err = rdev_set_wiphy_params(rdev, -1, WIPHY_PARAM_FRAG_THRESHOLD); 308 if (err) 309 wdev->wiphy->frag_threshold = ofrag; 310 return err; 311 } 312 313 int cfg80211_wext_giwfrag(struct net_device *dev, 314 struct iw_request_info *info, 315 union iwreq_data *wrqu, char *extra) 316 { 317 struct iw_param *frag = &wrqu->frag; 318 struct wireless_dev *wdev = dev->ieee80211_ptr; 319 320 frag->value = wdev->wiphy->frag_threshold; 321 frag->disabled = frag->value == (u32) -1; 322 frag->fixed = 1; 323 324 return 0; 325 } 326 327 static int cfg80211_wext_siwretry(struct net_device *dev, 328 struct iw_request_info *info, 329 union iwreq_data *wrqu, char *extra) 330 { 331 struct iw_param *retry = &wrqu->retry; 332 struct wireless_dev *wdev = dev->ieee80211_ptr; 333 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 334 u32 changed = 0; 335 u8 olong = wdev->wiphy->retry_long; 336 u8 oshort = wdev->wiphy->retry_short; 337 int err; 338 339 if (retry->disabled || retry->value < 1 || retry->value > 255 || 340 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT) 341 return -EINVAL; 342 343 guard(wiphy)(&rdev->wiphy); 344 345 if (retry->flags & IW_RETRY_LONG) { 346 wdev->wiphy->retry_long = retry->value; 347 changed |= WIPHY_PARAM_RETRY_LONG; 348 } else if (retry->flags & IW_RETRY_SHORT) { 349 wdev->wiphy->retry_short = retry->value; 350 changed |= WIPHY_PARAM_RETRY_SHORT; 351 } else { 352 wdev->wiphy->retry_short = retry->value; 353 wdev->wiphy->retry_long = retry->value; 354 changed |= WIPHY_PARAM_RETRY_LONG; 355 changed |= WIPHY_PARAM_RETRY_SHORT; 356 } 357 358 err = rdev_set_wiphy_params(rdev, -1, changed); 359 if (err) { 360 wdev->wiphy->retry_short = oshort; 361 wdev->wiphy->retry_long = olong; 362 } 363 364 return err; 365 } 366 367 int cfg80211_wext_giwretry(struct net_device *dev, 368 struct iw_request_info *info, 369 union iwreq_data *wrqu, char *extra) 370 { 371 struct iw_param *retry = &wrqu->retry; 372 struct wireless_dev *wdev = dev->ieee80211_ptr; 373 374 retry->disabled = 0; 375 376 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) { 377 /* 378 * First return short value, iwconfig will ask long value 379 * later if needed 380 */ 381 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT; 382 retry->value = wdev->wiphy->retry_short; 383 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short) 384 retry->flags |= IW_RETRY_LONG; 385 386 return 0; 387 } 388 389 if (retry->flags & IW_RETRY_LONG) { 390 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG; 391 retry->value = wdev->wiphy->retry_long; 392 } 393 394 return 0; 395 } 396 397 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 398 struct net_device *dev, bool pairwise, 399 const u8 *addr, bool remove, bool tx_key, 400 int idx, struct key_params *params) 401 { 402 struct wireless_dev *wdev = dev->ieee80211_ptr; 403 int err, i; 404 bool rejoin = false; 405 406 if (wdev->valid_links) 407 return -EINVAL; 408 409 if (pairwise && !addr) 410 return -EINVAL; 411 412 /* 413 * In many cases we won't actually need this, but it's better 414 * to do it first in case the allocation fails. Don't use wext. 415 */ 416 if (!wdev->wext.keys) { 417 wdev->wext.keys = kzalloc_obj(*wdev->wext.keys); 418 if (!wdev->wext.keys) 419 return -ENOMEM; 420 for (i = 0; i < 4; i++) 421 wdev->wext.keys->params[i].key = 422 wdev->wext.keys->data[i]; 423 } 424 425 if (wdev->iftype != NL80211_IFTYPE_ADHOC && 426 wdev->iftype != NL80211_IFTYPE_STATION) 427 return -EOPNOTSUPP; 428 429 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 430 if (!wdev->connected) 431 return -ENOLINK; 432 433 if (!rdev->ops->set_default_mgmt_key) 434 return -EOPNOTSUPP; 435 436 if (idx < 4 || idx > 5) 437 return -EINVAL; 438 } else if (idx < 0 || idx > 3) 439 return -EINVAL; 440 441 if (remove) { 442 err = 0; 443 if (wdev->connected || 444 (wdev->iftype == NL80211_IFTYPE_ADHOC && 445 wdev->u.ibss.current_bss)) { 446 /* 447 * If removing the current TX key, we will need to 448 * join a new IBSS without the privacy bit clear. 449 */ 450 if (idx == wdev->wext.default_key && 451 wdev->iftype == NL80211_IFTYPE_ADHOC) { 452 cfg80211_leave_ibss(rdev, wdev->netdev, true); 453 rejoin = true; 454 } 455 456 if (!pairwise && addr && 457 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 458 err = -ENOENT; 459 else 460 err = rdev_del_key(rdev, wdev, -1, idx, pairwise, 461 addr); 462 } 463 wdev->wext.connect.privacy = false; 464 /* 465 * Applications using wireless extensions expect to be 466 * able to delete keys that don't exist, so allow that. 467 */ 468 if (err == -ENOENT) 469 err = 0; 470 if (!err) { 471 if (!addr && idx < 4) { 472 memset(wdev->wext.keys->data[idx], 0, 473 sizeof(wdev->wext.keys->data[idx])); 474 wdev->wext.keys->params[idx].key_len = 0; 475 wdev->wext.keys->params[idx].cipher = 0; 476 } 477 if (idx == wdev->wext.default_key) 478 wdev->wext.default_key = -1; 479 else if (idx == wdev->wext.default_mgmt_key) 480 wdev->wext.default_mgmt_key = -1; 481 } 482 483 if (!err && rejoin) 484 err = cfg80211_ibss_wext_join(rdev, wdev); 485 486 return err; 487 } 488 489 if (addr) 490 tx_key = false; 491 492 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr)) 493 return -EINVAL; 494 495 err = 0; 496 if (wdev->connected || 497 (wdev->iftype == NL80211_IFTYPE_ADHOC && 498 wdev->u.ibss.current_bss)) 499 err = rdev_add_key(rdev, wdev, -1, idx, pairwise, addr, params); 500 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 && 501 params->cipher != WLAN_CIPHER_SUITE_WEP104) 502 return -EINVAL; 503 if (err) 504 return err; 505 506 /* 507 * We only need to store WEP keys, since they're the only keys that 508 * can be set before a connection is established and persist after 509 * disconnecting. 510 */ 511 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 || 512 params->cipher == WLAN_CIPHER_SUITE_WEP104)) { 513 wdev->wext.keys->params[idx] = *params; 514 memcpy(wdev->wext.keys->data[idx], 515 params->key, params->key_len); 516 wdev->wext.keys->params[idx].key = 517 wdev->wext.keys->data[idx]; 518 } 519 520 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 || 521 params->cipher == WLAN_CIPHER_SUITE_WEP104) && 522 (tx_key || (!addr && wdev->wext.default_key == -1))) { 523 if (wdev->connected || 524 (wdev->iftype == NL80211_IFTYPE_ADHOC && 525 wdev->u.ibss.current_bss)) { 526 /* 527 * If we are getting a new TX key from not having 528 * had one before we need to join a new IBSS with 529 * the privacy bit set. 530 */ 531 if (wdev->iftype == NL80211_IFTYPE_ADHOC && 532 wdev->wext.default_key == -1) { 533 cfg80211_leave_ibss(rdev, wdev->netdev, true); 534 rejoin = true; 535 } 536 err = rdev_set_default_key(rdev, dev, -1, idx, true, 537 true); 538 } 539 if (!err) { 540 wdev->wext.default_key = idx; 541 if (rejoin) 542 err = cfg80211_ibss_wext_join(rdev, wdev); 543 } 544 return err; 545 } 546 547 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC && 548 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) { 549 if (wdev->connected || 550 (wdev->iftype == NL80211_IFTYPE_ADHOC && 551 wdev->u.ibss.current_bss)) 552 err = rdev_set_default_mgmt_key(rdev, wdev, -1, idx); 553 if (!err) 554 wdev->wext.default_mgmt_key = idx; 555 return err; 556 } 557 558 return 0; 559 } 560 561 static int cfg80211_wext_siwencode(struct net_device *dev, 562 struct iw_request_info *info, 563 union iwreq_data *wrqu, char *keybuf) 564 { 565 struct iw_point *erq = &wrqu->encoding; 566 struct wireless_dev *wdev = dev->ieee80211_ptr; 567 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 568 struct key_params params; 569 bool remove = false; 570 int idx; 571 572 if (wdev->iftype != NL80211_IFTYPE_STATION && 573 wdev->iftype != NL80211_IFTYPE_ADHOC) 574 return -EOPNOTSUPP; 575 576 /* no use -- only MFP (set_default_mgmt_key) is optional */ 577 if (!rdev->ops->del_key || 578 !rdev->ops->add_key || 579 !rdev->ops->set_default_key) 580 return -EOPNOTSUPP; 581 582 guard(wiphy)(&rdev->wiphy); 583 if (wdev->valid_links) 584 return -EOPNOTSUPP; 585 586 idx = erq->flags & IW_ENCODE_INDEX; 587 if (idx == 0) { 588 idx = wdev->wext.default_key; 589 if (idx < 0) 590 idx = 0; 591 } else if (idx < 1 || idx > 4) { 592 return -EINVAL; 593 } else { 594 idx--; 595 } 596 597 if (erq->flags & IW_ENCODE_DISABLED) 598 remove = true; 599 else if (erq->length == 0) { 600 /* No key data - just set the default TX key index */ 601 int err = 0; 602 603 if (wdev->connected || 604 (wdev->iftype == NL80211_IFTYPE_ADHOC && 605 wdev->u.ibss.current_bss)) 606 err = rdev_set_default_key(rdev, dev, -1, idx, true, 607 true); 608 if (!err) 609 wdev->wext.default_key = idx; 610 return err; 611 } 612 613 memset(¶ms, 0, sizeof(params)); 614 params.key = keybuf; 615 params.key_len = erq->length; 616 if (erq->length == 5) 617 params.cipher = WLAN_CIPHER_SUITE_WEP40; 618 else if (erq->length == 13) 619 params.cipher = WLAN_CIPHER_SUITE_WEP104; 620 else if (!remove) 621 return -EINVAL; 622 623 return cfg80211_set_encryption(rdev, dev, false, NULL, remove, 624 wdev->wext.default_key == -1, 625 idx, ¶ms); 626 } 627 628 static int cfg80211_wext_siwencodeext(struct net_device *dev, 629 struct iw_request_info *info, 630 union iwreq_data *wrqu, char *extra) 631 { 632 struct iw_point *erq = &wrqu->encoding; 633 struct wireless_dev *wdev = dev->ieee80211_ptr; 634 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 635 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; 636 const u8 *addr; 637 int idx; 638 bool remove = false; 639 struct key_params params; 640 u32 cipher; 641 642 if (wdev->iftype != NL80211_IFTYPE_STATION && 643 wdev->iftype != NL80211_IFTYPE_ADHOC) 644 return -EOPNOTSUPP; 645 646 /* no use -- only MFP (set_default_mgmt_key) is optional */ 647 if (!rdev->ops->del_key || 648 !rdev->ops->add_key || 649 !rdev->ops->set_default_key) 650 return -EOPNOTSUPP; 651 652 if (wdev->valid_links) 653 return -EOPNOTSUPP; 654 655 switch (ext->alg) { 656 case IW_ENCODE_ALG_NONE: 657 remove = true; 658 cipher = 0; 659 break; 660 case IW_ENCODE_ALG_WEP: 661 if (ext->key_len == 5) 662 cipher = WLAN_CIPHER_SUITE_WEP40; 663 else if (ext->key_len == 13) 664 cipher = WLAN_CIPHER_SUITE_WEP104; 665 else 666 return -EINVAL; 667 break; 668 case IW_ENCODE_ALG_TKIP: 669 cipher = WLAN_CIPHER_SUITE_TKIP; 670 break; 671 case IW_ENCODE_ALG_CCMP: 672 cipher = WLAN_CIPHER_SUITE_CCMP; 673 break; 674 case IW_ENCODE_ALG_AES_CMAC: 675 cipher = WLAN_CIPHER_SUITE_AES_CMAC; 676 break; 677 default: 678 return -EOPNOTSUPP; 679 } 680 681 if (erq->flags & IW_ENCODE_DISABLED) 682 remove = true; 683 684 idx = erq->flags & IW_ENCODE_INDEX; 685 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 686 if (idx < 5 || idx > 6) { 687 idx = wdev->wext.default_mgmt_key; 688 if (idx < 0) 689 return -EINVAL; 690 } else 691 idx--; 692 } else { 693 if (idx < 1 || idx > 4) { 694 idx = wdev->wext.default_key; 695 if (idx < 0) 696 return -EINVAL; 697 } else 698 idx--; 699 } 700 701 addr = ext->addr.sa_data; 702 if (is_broadcast_ether_addr(addr)) 703 addr = NULL; 704 705 memset(¶ms, 0, sizeof(params)); 706 params.key = ext->key; 707 params.key_len = ext->key_len; 708 params.cipher = cipher; 709 710 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { 711 params.seq = ext->rx_seq; 712 params.seq_len = 6; 713 } 714 715 guard(wiphy)(wdev->wiphy); 716 717 return cfg80211_set_encryption(rdev, dev, 718 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY), 719 addr, remove, 720 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, 721 idx, ¶ms); 722 } 723 724 static int cfg80211_wext_giwencode(struct net_device *dev, 725 struct iw_request_info *info, 726 union iwreq_data *wrqu, char *keybuf) 727 { 728 struct iw_point *erq = &wrqu->encoding; 729 struct wireless_dev *wdev = dev->ieee80211_ptr; 730 int idx; 731 732 if (wdev->iftype != NL80211_IFTYPE_STATION && 733 wdev->iftype != NL80211_IFTYPE_ADHOC) 734 return -EOPNOTSUPP; 735 736 idx = erq->flags & IW_ENCODE_INDEX; 737 if (idx == 0) { 738 idx = wdev->wext.default_key; 739 if (idx < 0) 740 idx = 0; 741 } else if (idx < 1 || idx > 4) 742 return -EINVAL; 743 else 744 idx--; 745 746 erq->flags = idx + 1; 747 748 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) { 749 erq->flags |= IW_ENCODE_DISABLED; 750 erq->length = 0; 751 return 0; 752 } 753 754 erq->length = min_t(size_t, erq->length, 755 wdev->wext.keys->params[idx].key_len); 756 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length); 757 erq->flags |= IW_ENCODE_ENABLED; 758 759 return 0; 760 } 761 762 static int cfg80211_wext_siwfreq(struct net_device *dev, 763 struct iw_request_info *info, 764 union iwreq_data *wrqu, char *extra) 765 { 766 struct iw_freq *wextfreq = &wrqu->freq; 767 struct wireless_dev *wdev = dev->ieee80211_ptr; 768 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 769 struct cfg80211_chan_def chandef = { 770 .width = NL80211_CHAN_WIDTH_20_NOHT, 771 }; 772 int freq; 773 774 guard(wiphy)(&rdev->wiphy); 775 776 switch (wdev->iftype) { 777 case NL80211_IFTYPE_STATION: 778 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra); 779 case NL80211_IFTYPE_ADHOC: 780 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra); 781 case NL80211_IFTYPE_MONITOR: 782 freq = cfg80211_wext_freq(wextfreq); 783 if (freq < 0) 784 return freq; 785 if (freq == 0) 786 return -EINVAL; 787 788 chandef.center_freq1 = freq; 789 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 790 if (!chandef.chan) 791 return -EINVAL; 792 if (!cfg80211_chandef_valid(&chandef)) 793 return -EINVAL; 794 return cfg80211_set_monitor_channel(rdev, dev, &chandef); 795 case NL80211_IFTYPE_MESH_POINT: 796 freq = cfg80211_wext_freq(wextfreq); 797 if (freq < 0) 798 return freq; 799 if (freq == 0) 800 return -EINVAL; 801 chandef.center_freq1 = freq; 802 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 803 if (!chandef.chan) 804 return -EINVAL; 805 return cfg80211_set_mesh_channel(rdev, wdev, &chandef); 806 default: 807 return -EOPNOTSUPP; 808 } 809 } 810 811 static int cfg80211_wext_giwfreq(struct net_device *dev, 812 struct iw_request_info *info, 813 union iwreq_data *wrqu, char *extra) 814 { 815 struct iw_freq *freq = &wrqu->freq; 816 struct wireless_dev *wdev = dev->ieee80211_ptr; 817 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 818 struct cfg80211_chan_def chandef = {}; 819 int ret; 820 821 guard(wiphy)(&rdev->wiphy); 822 823 switch (wdev->iftype) { 824 case NL80211_IFTYPE_STATION: 825 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra); 826 case NL80211_IFTYPE_ADHOC: 827 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); 828 case NL80211_IFTYPE_MONITOR: 829 if (!rdev->ops->get_channel) 830 return -EINVAL; 831 832 ret = rdev_get_channel(rdev, wdev, 0, &chandef); 833 if (ret) 834 return ret; 835 freq->m = chandef.chan->center_freq; 836 freq->e = 6; 837 return ret; 838 default: 839 return -EINVAL; 840 } 841 } 842 843 static int cfg80211_wext_siwtxpower(struct net_device *dev, 844 struct iw_request_info *info, 845 union iwreq_data *data, char *extra) 846 { 847 struct wireless_dev *wdev = dev->ieee80211_ptr; 848 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 849 enum nl80211_tx_power_setting type; 850 int dbm = 0; 851 852 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 853 return -EINVAL; 854 if (data->txpower.flags & IW_TXPOW_RANGE) 855 return -EINVAL; 856 857 if (!rdev->ops->set_tx_power) 858 return -EOPNOTSUPP; 859 860 /* only change when not disabling */ 861 if (!data->txpower.disabled) { 862 rfkill_set_sw_state(rdev->wiphy.rfkill, false); 863 864 if (data->txpower.fixed) { 865 /* 866 * wext doesn't support negative values, see 867 * below where it's for automatic 868 */ 869 if (data->txpower.value < 0) 870 return -EINVAL; 871 dbm = data->txpower.value; 872 type = NL80211_TX_POWER_FIXED; 873 /* TODO: do regulatory check! */ 874 } else { 875 /* 876 * Automatic power level setting, max being the value 877 * passed in from userland. 878 */ 879 if (data->txpower.value < 0) { 880 type = NL80211_TX_POWER_AUTOMATIC; 881 } else { 882 dbm = data->txpower.value; 883 type = NL80211_TX_POWER_LIMITED; 884 } 885 } 886 } else { 887 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true)) 888 schedule_work(&rdev->rfkill_block); 889 return 0; 890 } 891 892 guard(wiphy)(&rdev->wiphy); 893 894 return rdev_set_tx_power(rdev, wdev, -1, type, DBM_TO_MBM(dbm)); 895 } 896 897 static int cfg80211_wext_giwtxpower(struct net_device *dev, 898 struct iw_request_info *info, 899 union iwreq_data *data, char *extra) 900 { 901 struct wireless_dev *wdev = dev->ieee80211_ptr; 902 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 903 int err, val; 904 905 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 906 return -EINVAL; 907 if (data->txpower.flags & IW_TXPOW_RANGE) 908 return -EINVAL; 909 910 if (!rdev->ops->get_tx_power) 911 return -EOPNOTSUPP; 912 913 scoped_guard(wiphy, &rdev->wiphy) { 914 err = rdev_get_tx_power(rdev, wdev, -1, 0, &val); 915 } 916 if (err) 917 return err; 918 919 /* well... oh well */ 920 data->txpower.fixed = 1; 921 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill); 922 data->txpower.value = val; 923 data->txpower.flags = IW_TXPOW_DBM; 924 925 return 0; 926 } 927 928 static int cfg80211_set_auth_alg(struct wireless_dev *wdev, 929 s32 auth_alg) 930 { 931 int nr_alg = 0; 932 933 if (!auth_alg) 934 return -EINVAL; 935 936 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM | 937 IW_AUTH_ALG_SHARED_KEY | 938 IW_AUTH_ALG_LEAP)) 939 return -EINVAL; 940 941 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) { 942 nr_alg++; 943 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; 944 } 945 946 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) { 947 nr_alg++; 948 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY; 949 } 950 951 if (auth_alg & IW_AUTH_ALG_LEAP) { 952 nr_alg++; 953 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP; 954 } 955 956 if (nr_alg > 1) 957 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 958 959 return 0; 960 } 961 962 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions) 963 { 964 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA | 965 IW_AUTH_WPA_VERSION_WPA2| 966 IW_AUTH_WPA_VERSION_DISABLED)) 967 return -EINVAL; 968 969 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) && 970 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA| 971 IW_AUTH_WPA_VERSION_WPA2))) 972 return -EINVAL; 973 974 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) 975 wdev->wext.connect.crypto.wpa_versions &= 976 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2); 977 978 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA) 979 wdev->wext.connect.crypto.wpa_versions |= 980 NL80211_WPA_VERSION_1; 981 982 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2) 983 wdev->wext.connect.crypto.wpa_versions |= 984 NL80211_WPA_VERSION_2; 985 986 return 0; 987 } 988 989 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher) 990 { 991 if (cipher & IW_AUTH_CIPHER_WEP40) 992 wdev->wext.connect.crypto.cipher_group = 993 WLAN_CIPHER_SUITE_WEP40; 994 else if (cipher & IW_AUTH_CIPHER_WEP104) 995 wdev->wext.connect.crypto.cipher_group = 996 WLAN_CIPHER_SUITE_WEP104; 997 else if (cipher & IW_AUTH_CIPHER_TKIP) 998 wdev->wext.connect.crypto.cipher_group = 999 WLAN_CIPHER_SUITE_TKIP; 1000 else if (cipher & IW_AUTH_CIPHER_CCMP) 1001 wdev->wext.connect.crypto.cipher_group = 1002 WLAN_CIPHER_SUITE_CCMP; 1003 else if (cipher & IW_AUTH_CIPHER_AES_CMAC) 1004 wdev->wext.connect.crypto.cipher_group = 1005 WLAN_CIPHER_SUITE_AES_CMAC; 1006 else if (cipher & IW_AUTH_CIPHER_NONE) 1007 wdev->wext.connect.crypto.cipher_group = 0; 1008 else 1009 return -EINVAL; 1010 1011 return 0; 1012 } 1013 1014 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher) 1015 { 1016 int nr_ciphers = 0; 1017 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise; 1018 1019 if (cipher & IW_AUTH_CIPHER_WEP40) { 1020 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40; 1021 nr_ciphers++; 1022 } 1023 1024 if (cipher & IW_AUTH_CIPHER_WEP104) { 1025 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104; 1026 nr_ciphers++; 1027 } 1028 1029 if (cipher & IW_AUTH_CIPHER_TKIP) { 1030 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP; 1031 nr_ciphers++; 1032 } 1033 1034 if (cipher & IW_AUTH_CIPHER_CCMP) { 1035 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP; 1036 nr_ciphers++; 1037 } 1038 1039 if (cipher & IW_AUTH_CIPHER_AES_CMAC) { 1040 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC; 1041 nr_ciphers++; 1042 } 1043 1044 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5); 1045 1046 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers; 1047 1048 return 0; 1049 } 1050 1051 1052 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) 1053 { 1054 int nr_akm_suites = 0; 1055 1056 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X | 1057 IW_AUTH_KEY_MGMT_PSK)) 1058 return -EINVAL; 1059 1060 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) { 1061 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1062 WLAN_AKM_SUITE_8021X; 1063 nr_akm_suites++; 1064 } 1065 1066 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) { 1067 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1068 WLAN_AKM_SUITE_PSK; 1069 nr_akm_suites++; 1070 } 1071 1072 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites; 1073 1074 return 0; 1075 } 1076 1077 static int cfg80211_wext_siwauth(struct net_device *dev, 1078 struct iw_request_info *info, 1079 union iwreq_data *wrqu, char *extra) 1080 { 1081 struct iw_param *data = &wrqu->param; 1082 struct wireless_dev *wdev = dev->ieee80211_ptr; 1083 1084 if (wdev->iftype != NL80211_IFTYPE_STATION) 1085 return -EOPNOTSUPP; 1086 1087 switch (data->flags & IW_AUTH_INDEX) { 1088 case IW_AUTH_PRIVACY_INVOKED: 1089 wdev->wext.connect.privacy = data->value; 1090 return 0; 1091 case IW_AUTH_WPA_VERSION: 1092 return cfg80211_set_wpa_version(wdev, data->value); 1093 case IW_AUTH_CIPHER_GROUP: 1094 return cfg80211_set_cipher_group(wdev, data->value); 1095 case IW_AUTH_KEY_MGMT: 1096 return cfg80211_set_key_mgt(wdev, data->value); 1097 case IW_AUTH_CIPHER_PAIRWISE: 1098 return cfg80211_set_cipher_pairwise(wdev, data->value); 1099 case IW_AUTH_80211_AUTH_ALG: 1100 return cfg80211_set_auth_alg(wdev, data->value); 1101 case IW_AUTH_WPA_ENABLED: 1102 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1103 case IW_AUTH_DROP_UNENCRYPTED: 1104 case IW_AUTH_MFP: 1105 return 0; 1106 default: 1107 return -EOPNOTSUPP; 1108 } 1109 } 1110 1111 static int cfg80211_wext_giwauth(struct net_device *dev, 1112 struct iw_request_info *info, 1113 union iwreq_data *wrqu, char *extra) 1114 { 1115 /* XXX: what do we need? */ 1116 1117 return -EOPNOTSUPP; 1118 } 1119 1120 static int cfg80211_wext_siwpower(struct net_device *dev, 1121 struct iw_request_info *info, 1122 union iwreq_data *wrqu, char *extra) 1123 { 1124 struct iw_param *wrq = &wrqu->power; 1125 struct wireless_dev *wdev = dev->ieee80211_ptr; 1126 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1127 bool ps; 1128 int timeout = wdev->ps_timeout; 1129 int err; 1130 1131 if (wdev->iftype != NL80211_IFTYPE_STATION) 1132 return -EINVAL; 1133 1134 if (!rdev->ops->set_power_mgmt) 1135 return -EOPNOTSUPP; 1136 1137 if (wrq->disabled) { 1138 ps = false; 1139 } else { 1140 switch (wrq->flags & IW_POWER_MODE) { 1141 case IW_POWER_ON: /* If not specified */ 1142 case IW_POWER_MODE: /* If set all mask */ 1143 case IW_POWER_ALL_R: /* If explicitly state all */ 1144 ps = true; 1145 break; 1146 default: /* Otherwise we ignore */ 1147 return -EINVAL; 1148 } 1149 1150 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT)) 1151 return -EINVAL; 1152 1153 if (wrq->flags & IW_POWER_TIMEOUT) 1154 timeout = wrq->value / 1000; 1155 } 1156 1157 guard(wiphy)(&rdev->wiphy); 1158 1159 err = rdev_set_power_mgmt(rdev, dev, ps, timeout); 1160 if (err) 1161 return err; 1162 1163 wdev->ps = ps; 1164 wdev->ps_timeout = timeout; 1165 1166 return 0; 1167 1168 } 1169 1170 static int cfg80211_wext_giwpower(struct net_device *dev, 1171 struct iw_request_info *info, 1172 union iwreq_data *wrqu, char *extra) 1173 { 1174 struct iw_param *wrq = &wrqu->power; 1175 struct wireless_dev *wdev = dev->ieee80211_ptr; 1176 1177 wrq->disabled = !wdev->ps; 1178 1179 return 0; 1180 } 1181 1182 static int cfg80211_wext_siwrate(struct net_device *dev, 1183 struct iw_request_info *info, 1184 union iwreq_data *wrqu, char *extra) 1185 { 1186 struct iw_param *rate = &wrqu->bitrate; 1187 struct wireless_dev *wdev = dev->ieee80211_ptr; 1188 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1189 struct cfg80211_bitrate_mask mask; 1190 u32 fixed, maxrate; 1191 struct ieee80211_supported_band *sband; 1192 bool match = false; 1193 int band, ridx; 1194 1195 if (!rdev->ops->set_bitrate_mask) 1196 return -EOPNOTSUPP; 1197 1198 memset(&mask, 0, sizeof(mask)); 1199 fixed = 0; 1200 maxrate = (u32)-1; 1201 1202 if (rate->value < 0) { 1203 /* nothing */ 1204 } else if (rate->fixed) { 1205 fixed = rate->value / 100000; 1206 } else { 1207 maxrate = rate->value / 100000; 1208 } 1209 1210 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1211 sband = wdev->wiphy->bands[band]; 1212 if (sband == NULL) 1213 continue; 1214 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 1215 struct ieee80211_rate *srate = &sband->bitrates[ridx]; 1216 if (fixed == srate->bitrate) { 1217 mask.control[band].legacy = 1 << ridx; 1218 match = true; 1219 break; 1220 } 1221 if (srate->bitrate <= maxrate) { 1222 mask.control[band].legacy |= 1 << ridx; 1223 match = true; 1224 } 1225 } 1226 } 1227 1228 if (!match) 1229 return -EINVAL; 1230 1231 guard(wiphy)(&rdev->wiphy); 1232 1233 if (dev->ieee80211_ptr->valid_links) 1234 return -EOPNOTSUPP; 1235 1236 return rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask); 1237 } 1238 1239 static int cfg80211_wext_giwrate(struct net_device *dev, 1240 struct iw_request_info *info, 1241 union iwreq_data *wrqu, char *extra) 1242 { 1243 struct iw_param *rate = &wrqu->bitrate; 1244 struct wireless_dev *wdev = dev->ieee80211_ptr; 1245 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1246 struct station_info sinfo = {}; 1247 u8 addr[ETH_ALEN]; 1248 int err; 1249 1250 if (wdev->iftype != NL80211_IFTYPE_STATION) 1251 return -EOPNOTSUPP; 1252 1253 if (!rdev->ops->get_station) 1254 return -EOPNOTSUPP; 1255 1256 err = 0; 1257 if (!wdev->valid_links && wdev->links[0].client.current_bss) 1258 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid, 1259 ETH_ALEN); 1260 else 1261 err = -EOPNOTSUPP; 1262 if (err) 1263 return err; 1264 1265 scoped_guard(wiphy, &rdev->wiphy) { 1266 err = rdev_get_station(rdev, wdev, addr, &sinfo); 1267 } 1268 if (err) 1269 return err; 1270 1271 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { 1272 err = -EOPNOTSUPP; 1273 goto free; 1274 } 1275 1276 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); 1277 1278 free: 1279 cfg80211_sinfo_release_content(&sinfo); 1280 return err; 1281 } 1282 1283 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ 1284 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) 1285 { 1286 struct wireless_dev *wdev = dev->ieee80211_ptr; 1287 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1288 /* we are under RTNL - globally locked - so can use static structs */ 1289 static struct iw_statistics wstats; 1290 static struct station_info sinfo = {}; 1291 u8 bssid[ETH_ALEN]; 1292 int ret; 1293 1294 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) 1295 return NULL; 1296 1297 if (!rdev->ops->get_station) 1298 return NULL; 1299 1300 /* Grab BSSID of current BSS, if any */ 1301 wiphy_lock(&rdev->wiphy); 1302 if (wdev->valid_links || !wdev->links[0].client.current_bss) { 1303 wiphy_unlock(&rdev->wiphy); 1304 return NULL; 1305 } 1306 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN); 1307 1308 memset(&sinfo, 0, sizeof(sinfo)); 1309 1310 ret = rdev_get_station(rdev, wdev, bssid, &sinfo); 1311 wiphy_unlock(&rdev->wiphy); 1312 1313 if (ret) 1314 return NULL; 1315 1316 memset(&wstats, 0, sizeof(wstats)); 1317 1318 switch (rdev->wiphy.signal_type) { 1319 case CFG80211_SIGNAL_TYPE_MBM: 1320 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1321 int sig = sinfo.signal; 1322 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1323 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1324 wstats.qual.updated |= IW_QUAL_DBM; 1325 wstats.qual.level = sig; 1326 if (sig < -110) 1327 sig = -110; 1328 else if (sig > -40) 1329 sig = -40; 1330 wstats.qual.qual = sig + 110; 1331 break; 1332 } 1333 fallthrough; 1334 case CFG80211_SIGNAL_TYPE_UNSPEC: 1335 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1336 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1337 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1338 wstats.qual.level = sinfo.signal; 1339 wstats.qual.qual = sinfo.signal; 1340 break; 1341 } 1342 fallthrough; 1343 default: 1344 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID; 1345 wstats.qual.updated |= IW_QUAL_QUAL_INVALID; 1346 } 1347 1348 wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1349 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) 1350 wstats.discard.misc = sinfo.rx_dropped_misc; 1351 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) 1352 wstats.discard.retries = sinfo.tx_failed; 1353 1354 cfg80211_sinfo_release_content(&sinfo); 1355 1356 return &wstats; 1357 } 1358 1359 static int cfg80211_wext_siwap(struct net_device *dev, 1360 struct iw_request_info *info, 1361 union iwreq_data *wrqu, char *extra) 1362 { 1363 struct sockaddr *ap_addr = &wrqu->ap_addr; 1364 struct wireless_dev *wdev = dev->ieee80211_ptr; 1365 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1366 1367 guard(wiphy)(&rdev->wiphy); 1368 1369 switch (wdev->iftype) { 1370 case NL80211_IFTYPE_ADHOC: 1371 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); 1372 case NL80211_IFTYPE_STATION: 1373 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra); 1374 default: 1375 return -EOPNOTSUPP; 1376 } 1377 } 1378 1379 static int cfg80211_wext_giwap(struct net_device *dev, 1380 struct iw_request_info *info, 1381 union iwreq_data *wrqu, char *extra) 1382 { 1383 struct sockaddr *ap_addr = &wrqu->ap_addr; 1384 struct wireless_dev *wdev = dev->ieee80211_ptr; 1385 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1386 1387 guard(wiphy)(&rdev->wiphy); 1388 1389 switch (wdev->iftype) { 1390 case NL80211_IFTYPE_ADHOC: 1391 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); 1392 case NL80211_IFTYPE_STATION: 1393 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra); 1394 default: 1395 return -EOPNOTSUPP; 1396 } 1397 } 1398 1399 static int cfg80211_wext_siwessid(struct net_device *dev, 1400 struct iw_request_info *info, 1401 union iwreq_data *wrqu, char *ssid) 1402 { 1403 struct iw_point *data = &wrqu->data; 1404 struct wireless_dev *wdev = dev->ieee80211_ptr; 1405 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1406 1407 guard(wiphy)(&rdev->wiphy); 1408 1409 switch (wdev->iftype) { 1410 case NL80211_IFTYPE_ADHOC: 1411 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid); 1412 case NL80211_IFTYPE_STATION: 1413 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid); 1414 default: 1415 return -EOPNOTSUPP; 1416 } 1417 } 1418 1419 static int cfg80211_wext_giwessid(struct net_device *dev, 1420 struct iw_request_info *info, 1421 union iwreq_data *wrqu, char *ssid) 1422 { 1423 struct iw_point *data = &wrqu->data; 1424 struct wireless_dev *wdev = dev->ieee80211_ptr; 1425 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1426 1427 data->flags = 0; 1428 data->length = 0; 1429 1430 guard(wiphy)(&rdev->wiphy); 1431 1432 switch (wdev->iftype) { 1433 case NL80211_IFTYPE_ADHOC: 1434 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid); 1435 case NL80211_IFTYPE_STATION: 1436 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid); 1437 default: 1438 return -EOPNOTSUPP; 1439 } 1440 } 1441 1442 static int cfg80211_wext_siwpmksa(struct net_device *dev, 1443 struct iw_request_info *info, 1444 union iwreq_data *wrqu, char *extra) 1445 { 1446 struct wireless_dev *wdev = dev->ieee80211_ptr; 1447 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1448 struct cfg80211_pmksa cfg_pmksa; 1449 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra; 1450 1451 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa)); 1452 1453 if (wdev->iftype != NL80211_IFTYPE_STATION) 1454 return -EINVAL; 1455 1456 cfg_pmksa.bssid = pmksa->bssid.sa_data; 1457 cfg_pmksa.pmkid = pmksa->pmkid; 1458 1459 guard(wiphy)(&rdev->wiphy); 1460 1461 switch (pmksa->cmd) { 1462 case IW_PMKSA_ADD: 1463 if (!rdev->ops->set_pmksa) 1464 return -EOPNOTSUPP; 1465 1466 return rdev_set_pmksa(rdev, dev, &cfg_pmksa); 1467 case IW_PMKSA_REMOVE: 1468 if (!rdev->ops->del_pmksa) 1469 return -EOPNOTSUPP; 1470 1471 return rdev_del_pmksa(rdev, dev, &cfg_pmksa); 1472 case IW_PMKSA_FLUSH: 1473 if (!rdev->ops->flush_pmksa) 1474 return -EOPNOTSUPP; 1475 1476 return rdev_flush_pmksa(rdev, dev); 1477 default: 1478 return -EOPNOTSUPP; 1479 } 1480 } 1481 1482 static const iw_handler cfg80211_handlers[] = { 1483 IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname), 1484 IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq), 1485 IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq), 1486 IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode), 1487 IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode), 1488 IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange), 1489 IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap), 1490 IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap), 1491 IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme), 1492 IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan), 1493 IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan), 1494 IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid), 1495 IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid), 1496 IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate), 1497 IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate), 1498 IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts), 1499 IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts), 1500 IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag), 1501 IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag), 1502 IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower), 1503 IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower), 1504 IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry), 1505 IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry), 1506 IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode), 1507 IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode), 1508 IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower), 1509 IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower), 1510 IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie), 1511 IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth), 1512 IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth), 1513 IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext), 1514 IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa), 1515 }; 1516 1517 const struct iw_handler_def cfg80211_wext_handler = { 1518 .num_standard = ARRAY_SIZE(cfg80211_handlers), 1519 .standard = cfg80211_handlers, 1520 .get_wireless_stats = cfg80211_wireless_stats, 1521 }; 1522