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, wdev, params, idx, 493 pairwise, addr)) 494 return -EINVAL; 495 496 err = 0; 497 if (wdev->connected || 498 (wdev->iftype == NL80211_IFTYPE_ADHOC && 499 wdev->u.ibss.current_bss)) 500 err = rdev_add_key(rdev, wdev, -1, idx, pairwise, addr, params); 501 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 && 502 params->cipher != WLAN_CIPHER_SUITE_WEP104) 503 return -EINVAL; 504 if (err) 505 return err; 506 507 /* 508 * We only need to store WEP keys, since they're the only keys that 509 * can be set before a connection is established and persist after 510 * disconnecting. 511 */ 512 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 || 513 params->cipher == WLAN_CIPHER_SUITE_WEP104)) { 514 wdev->wext.keys->params[idx] = *params; 515 memcpy(wdev->wext.keys->data[idx], 516 params->key, params->key_len); 517 wdev->wext.keys->params[idx].key = 518 wdev->wext.keys->data[idx]; 519 } 520 521 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 || 522 params->cipher == WLAN_CIPHER_SUITE_WEP104) && 523 (tx_key || (!addr && wdev->wext.default_key == -1))) { 524 if (wdev->connected || 525 (wdev->iftype == NL80211_IFTYPE_ADHOC && 526 wdev->u.ibss.current_bss)) { 527 /* 528 * If we are getting a new TX key from not having 529 * had one before we need to join a new IBSS with 530 * the privacy bit set. 531 */ 532 if (wdev->iftype == NL80211_IFTYPE_ADHOC && 533 wdev->wext.default_key == -1) { 534 cfg80211_leave_ibss(rdev, wdev->netdev, true); 535 rejoin = true; 536 } 537 err = rdev_set_default_key(rdev, dev, -1, idx, true, 538 true); 539 } 540 if (!err) { 541 wdev->wext.default_key = idx; 542 if (rejoin) 543 err = cfg80211_ibss_wext_join(rdev, wdev); 544 } 545 return err; 546 } 547 548 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC && 549 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) { 550 if (wdev->connected || 551 (wdev->iftype == NL80211_IFTYPE_ADHOC && 552 wdev->u.ibss.current_bss)) 553 err = rdev_set_default_mgmt_key(rdev, wdev, -1, idx); 554 if (!err) 555 wdev->wext.default_mgmt_key = idx; 556 return err; 557 } 558 559 return 0; 560 } 561 562 static int cfg80211_wext_siwencode(struct net_device *dev, 563 struct iw_request_info *info, 564 union iwreq_data *wrqu, char *keybuf) 565 { 566 struct iw_point *erq = &wrqu->encoding; 567 struct wireless_dev *wdev = dev->ieee80211_ptr; 568 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 569 struct key_params params; 570 bool remove = false; 571 int idx; 572 573 if (wdev->iftype != NL80211_IFTYPE_STATION && 574 wdev->iftype != NL80211_IFTYPE_ADHOC) 575 return -EOPNOTSUPP; 576 577 /* no use -- only MFP (set_default_mgmt_key) is optional */ 578 if (!rdev->ops->del_key || 579 !rdev->ops->add_key || 580 !rdev->ops->set_default_key) 581 return -EOPNOTSUPP; 582 583 guard(wiphy)(&rdev->wiphy); 584 if (wdev->valid_links) 585 return -EOPNOTSUPP; 586 587 idx = erq->flags & IW_ENCODE_INDEX; 588 if (idx == 0) { 589 idx = wdev->wext.default_key; 590 if (idx < 0) 591 idx = 0; 592 } else if (idx < 1 || idx > 4) { 593 return -EINVAL; 594 } else { 595 idx--; 596 } 597 598 if (erq->flags & IW_ENCODE_DISABLED) 599 remove = true; 600 else if (erq->length == 0) { 601 /* No key data - just set the default TX key index */ 602 int err = 0; 603 604 if (wdev->connected || 605 (wdev->iftype == NL80211_IFTYPE_ADHOC && 606 wdev->u.ibss.current_bss)) 607 err = rdev_set_default_key(rdev, dev, -1, idx, true, 608 true); 609 if (!err) 610 wdev->wext.default_key = idx; 611 return err; 612 } 613 614 memset(¶ms, 0, sizeof(params)); 615 params.key = keybuf; 616 params.key_len = erq->length; 617 if (erq->length == 5) 618 params.cipher = WLAN_CIPHER_SUITE_WEP40; 619 else if (erq->length == 13) 620 params.cipher = WLAN_CIPHER_SUITE_WEP104; 621 else if (!remove) 622 return -EINVAL; 623 624 return cfg80211_set_encryption(rdev, dev, false, NULL, remove, 625 wdev->wext.default_key == -1, 626 idx, ¶ms); 627 } 628 629 static int cfg80211_wext_siwencodeext(struct net_device *dev, 630 struct iw_request_info *info, 631 union iwreq_data *wrqu, char *extra) 632 { 633 struct iw_point *erq = &wrqu->encoding; 634 struct wireless_dev *wdev = dev->ieee80211_ptr; 635 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 636 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; 637 const u8 *addr; 638 int idx; 639 bool remove = false; 640 struct key_params params; 641 u32 cipher; 642 643 if (wdev->iftype != NL80211_IFTYPE_STATION && 644 wdev->iftype != NL80211_IFTYPE_ADHOC) 645 return -EOPNOTSUPP; 646 647 /* no use -- only MFP (set_default_mgmt_key) is optional */ 648 if (!rdev->ops->del_key || 649 !rdev->ops->add_key || 650 !rdev->ops->set_default_key) 651 return -EOPNOTSUPP; 652 653 if (wdev->valid_links) 654 return -EOPNOTSUPP; 655 656 switch (ext->alg) { 657 case IW_ENCODE_ALG_NONE: 658 remove = true; 659 cipher = 0; 660 break; 661 case IW_ENCODE_ALG_WEP: 662 if (ext->key_len == 5) 663 cipher = WLAN_CIPHER_SUITE_WEP40; 664 else if (ext->key_len == 13) 665 cipher = WLAN_CIPHER_SUITE_WEP104; 666 else 667 return -EINVAL; 668 break; 669 case IW_ENCODE_ALG_TKIP: 670 cipher = WLAN_CIPHER_SUITE_TKIP; 671 break; 672 case IW_ENCODE_ALG_CCMP: 673 cipher = WLAN_CIPHER_SUITE_CCMP; 674 break; 675 case IW_ENCODE_ALG_AES_CMAC: 676 cipher = WLAN_CIPHER_SUITE_AES_CMAC; 677 break; 678 default: 679 return -EOPNOTSUPP; 680 } 681 682 if (erq->flags & IW_ENCODE_DISABLED) 683 remove = true; 684 685 idx = erq->flags & IW_ENCODE_INDEX; 686 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 687 if (idx < 5 || idx > 6) { 688 idx = wdev->wext.default_mgmt_key; 689 if (idx < 0) 690 return -EINVAL; 691 } else 692 idx--; 693 } else { 694 if (idx < 1 || idx > 4) { 695 idx = wdev->wext.default_key; 696 if (idx < 0) 697 return -EINVAL; 698 } else 699 idx--; 700 } 701 702 addr = ext->addr.sa_data; 703 if (is_broadcast_ether_addr(addr)) 704 addr = NULL; 705 706 memset(¶ms, 0, sizeof(params)); 707 params.key = ext->key; 708 params.key_len = ext->key_len; 709 params.cipher = cipher; 710 711 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { 712 params.seq = ext->rx_seq; 713 params.seq_len = 6; 714 } 715 716 guard(wiphy)(wdev->wiphy); 717 718 return cfg80211_set_encryption(rdev, dev, 719 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY), 720 addr, remove, 721 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, 722 idx, ¶ms); 723 } 724 725 static int cfg80211_wext_giwencode(struct net_device *dev, 726 struct iw_request_info *info, 727 union iwreq_data *wrqu, char *keybuf) 728 { 729 struct iw_point *erq = &wrqu->encoding; 730 struct wireless_dev *wdev = dev->ieee80211_ptr; 731 int idx; 732 733 if (wdev->iftype != NL80211_IFTYPE_STATION && 734 wdev->iftype != NL80211_IFTYPE_ADHOC) 735 return -EOPNOTSUPP; 736 737 idx = erq->flags & IW_ENCODE_INDEX; 738 if (idx == 0) { 739 idx = wdev->wext.default_key; 740 if (idx < 0) 741 idx = 0; 742 } else if (idx < 1 || idx > 4) 743 return -EINVAL; 744 else 745 idx--; 746 747 erq->flags = idx + 1; 748 749 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) { 750 erq->flags |= IW_ENCODE_DISABLED; 751 erq->length = 0; 752 return 0; 753 } 754 755 erq->length = min_t(size_t, erq->length, 756 wdev->wext.keys->params[idx].key_len); 757 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length); 758 erq->flags |= IW_ENCODE_ENABLED; 759 760 return 0; 761 } 762 763 static int cfg80211_wext_siwfreq(struct net_device *dev, 764 struct iw_request_info *info, 765 union iwreq_data *wrqu, char *extra) 766 { 767 struct iw_freq *wextfreq = &wrqu->freq; 768 struct wireless_dev *wdev = dev->ieee80211_ptr; 769 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 770 struct cfg80211_chan_def chandef = { 771 .width = NL80211_CHAN_WIDTH_20_NOHT, 772 }; 773 int freq; 774 775 guard(wiphy)(&rdev->wiphy); 776 777 switch (wdev->iftype) { 778 case NL80211_IFTYPE_STATION: 779 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra); 780 case NL80211_IFTYPE_ADHOC: 781 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra); 782 case NL80211_IFTYPE_MONITOR: 783 freq = cfg80211_wext_freq(wextfreq); 784 if (freq < 0) 785 return freq; 786 if (freq == 0) 787 return -EINVAL; 788 789 chandef.center_freq1 = freq; 790 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 791 if (!chandef.chan) 792 return -EINVAL; 793 if (!cfg80211_chandef_valid(&chandef)) 794 return -EINVAL; 795 return cfg80211_set_monitor_channel(rdev, dev, &chandef); 796 case NL80211_IFTYPE_MESH_POINT: 797 freq = cfg80211_wext_freq(wextfreq); 798 if (freq < 0) 799 return freq; 800 if (freq == 0) 801 return -EINVAL; 802 chandef.center_freq1 = freq; 803 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 804 if (!chandef.chan) 805 return -EINVAL; 806 return cfg80211_set_mesh_channel(rdev, wdev, &chandef); 807 default: 808 return -EOPNOTSUPP; 809 } 810 } 811 812 static int cfg80211_wext_giwfreq(struct net_device *dev, 813 struct iw_request_info *info, 814 union iwreq_data *wrqu, char *extra) 815 { 816 struct iw_freq *freq = &wrqu->freq; 817 struct wireless_dev *wdev = dev->ieee80211_ptr; 818 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 819 struct cfg80211_chan_def chandef = {}; 820 int ret; 821 822 guard(wiphy)(&rdev->wiphy); 823 824 switch (wdev->iftype) { 825 case NL80211_IFTYPE_STATION: 826 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra); 827 case NL80211_IFTYPE_ADHOC: 828 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); 829 case NL80211_IFTYPE_MONITOR: 830 if (!rdev->ops->get_channel) 831 return -EINVAL; 832 833 ret = rdev_get_channel(rdev, wdev, 0, &chandef); 834 if (ret) 835 return ret; 836 freq->m = chandef.chan->center_freq; 837 freq->e = 6; 838 return ret; 839 default: 840 return -EINVAL; 841 } 842 } 843 844 static int cfg80211_wext_siwtxpower(struct net_device *dev, 845 struct iw_request_info *info, 846 union iwreq_data *data, char *extra) 847 { 848 struct wireless_dev *wdev = dev->ieee80211_ptr; 849 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 850 enum nl80211_tx_power_setting type; 851 int dbm = 0; 852 853 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 854 return -EINVAL; 855 if (data->txpower.flags & IW_TXPOW_RANGE) 856 return -EINVAL; 857 858 if (!rdev->ops->set_tx_power) 859 return -EOPNOTSUPP; 860 861 /* only change when not disabling */ 862 if (!data->txpower.disabled) { 863 rfkill_set_sw_state(rdev->wiphy.rfkill, false); 864 865 if (data->txpower.fixed) { 866 /* 867 * wext doesn't support negative values, see 868 * below where it's for automatic 869 */ 870 if (data->txpower.value < 0) 871 return -EINVAL; 872 dbm = data->txpower.value; 873 type = NL80211_TX_POWER_FIXED; 874 /* TODO: do regulatory check! */ 875 } else { 876 /* 877 * Automatic power level setting, max being the value 878 * passed in from userland. 879 */ 880 if (data->txpower.value < 0) { 881 type = NL80211_TX_POWER_AUTOMATIC; 882 } else { 883 dbm = data->txpower.value; 884 type = NL80211_TX_POWER_LIMITED; 885 } 886 } 887 } else { 888 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true)) 889 schedule_work(&rdev->rfkill_block); 890 return 0; 891 } 892 893 guard(wiphy)(&rdev->wiphy); 894 895 return rdev_set_tx_power(rdev, wdev, -1, type, DBM_TO_MBM(dbm)); 896 } 897 898 static int cfg80211_wext_giwtxpower(struct net_device *dev, 899 struct iw_request_info *info, 900 union iwreq_data *data, char *extra) 901 { 902 struct wireless_dev *wdev = dev->ieee80211_ptr; 903 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 904 int err, val; 905 906 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 907 return -EINVAL; 908 if (data->txpower.flags & IW_TXPOW_RANGE) 909 return -EINVAL; 910 911 if (!rdev->ops->get_tx_power) 912 return -EOPNOTSUPP; 913 914 scoped_guard(wiphy, &rdev->wiphy) { 915 err = rdev_get_tx_power(rdev, wdev, -1, 0, &val); 916 } 917 if (err) 918 return err; 919 920 /* well... oh well */ 921 data->txpower.fixed = 1; 922 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill); 923 data->txpower.value = val; 924 data->txpower.flags = IW_TXPOW_DBM; 925 926 return 0; 927 } 928 929 static int cfg80211_set_auth_alg(struct wireless_dev *wdev, 930 s32 auth_alg) 931 { 932 int nr_alg = 0; 933 934 if (!auth_alg) 935 return -EINVAL; 936 937 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM | 938 IW_AUTH_ALG_SHARED_KEY | 939 IW_AUTH_ALG_LEAP)) 940 return -EINVAL; 941 942 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) { 943 nr_alg++; 944 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; 945 } 946 947 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) { 948 nr_alg++; 949 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY; 950 } 951 952 if (auth_alg & IW_AUTH_ALG_LEAP) { 953 nr_alg++; 954 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP; 955 } 956 957 if (nr_alg > 1) 958 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 959 960 return 0; 961 } 962 963 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions) 964 { 965 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA | 966 IW_AUTH_WPA_VERSION_WPA2| 967 IW_AUTH_WPA_VERSION_DISABLED)) 968 return -EINVAL; 969 970 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) && 971 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA| 972 IW_AUTH_WPA_VERSION_WPA2))) 973 return -EINVAL; 974 975 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) 976 wdev->wext.connect.crypto.wpa_versions &= 977 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2); 978 979 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA) 980 wdev->wext.connect.crypto.wpa_versions |= 981 NL80211_WPA_VERSION_1; 982 983 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2) 984 wdev->wext.connect.crypto.wpa_versions |= 985 NL80211_WPA_VERSION_2; 986 987 return 0; 988 } 989 990 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher) 991 { 992 if (cipher & IW_AUTH_CIPHER_WEP40) 993 wdev->wext.connect.crypto.cipher_group = 994 WLAN_CIPHER_SUITE_WEP40; 995 else if (cipher & IW_AUTH_CIPHER_WEP104) 996 wdev->wext.connect.crypto.cipher_group = 997 WLAN_CIPHER_SUITE_WEP104; 998 else if (cipher & IW_AUTH_CIPHER_TKIP) 999 wdev->wext.connect.crypto.cipher_group = 1000 WLAN_CIPHER_SUITE_TKIP; 1001 else if (cipher & IW_AUTH_CIPHER_CCMP) 1002 wdev->wext.connect.crypto.cipher_group = 1003 WLAN_CIPHER_SUITE_CCMP; 1004 else if (cipher & IW_AUTH_CIPHER_AES_CMAC) 1005 wdev->wext.connect.crypto.cipher_group = 1006 WLAN_CIPHER_SUITE_AES_CMAC; 1007 else if (cipher & IW_AUTH_CIPHER_NONE) 1008 wdev->wext.connect.crypto.cipher_group = 0; 1009 else 1010 return -EINVAL; 1011 1012 return 0; 1013 } 1014 1015 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher) 1016 { 1017 int nr_ciphers = 0; 1018 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise; 1019 1020 if (cipher & IW_AUTH_CIPHER_WEP40) { 1021 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40; 1022 nr_ciphers++; 1023 } 1024 1025 if (cipher & IW_AUTH_CIPHER_WEP104) { 1026 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104; 1027 nr_ciphers++; 1028 } 1029 1030 if (cipher & IW_AUTH_CIPHER_TKIP) { 1031 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP; 1032 nr_ciphers++; 1033 } 1034 1035 if (cipher & IW_AUTH_CIPHER_CCMP) { 1036 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP; 1037 nr_ciphers++; 1038 } 1039 1040 if (cipher & IW_AUTH_CIPHER_AES_CMAC) { 1041 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC; 1042 nr_ciphers++; 1043 } 1044 1045 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5); 1046 1047 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers; 1048 1049 return 0; 1050 } 1051 1052 1053 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) 1054 { 1055 int nr_akm_suites = 0; 1056 1057 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X | 1058 IW_AUTH_KEY_MGMT_PSK)) 1059 return -EINVAL; 1060 1061 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) { 1062 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1063 WLAN_AKM_SUITE_8021X; 1064 nr_akm_suites++; 1065 } 1066 1067 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) { 1068 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1069 WLAN_AKM_SUITE_PSK; 1070 nr_akm_suites++; 1071 } 1072 1073 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites; 1074 1075 return 0; 1076 } 1077 1078 static int cfg80211_wext_siwauth(struct net_device *dev, 1079 struct iw_request_info *info, 1080 union iwreq_data *wrqu, char *extra) 1081 { 1082 struct iw_param *data = &wrqu->param; 1083 struct wireless_dev *wdev = dev->ieee80211_ptr; 1084 1085 if (wdev->iftype != NL80211_IFTYPE_STATION) 1086 return -EOPNOTSUPP; 1087 1088 switch (data->flags & IW_AUTH_INDEX) { 1089 case IW_AUTH_PRIVACY_INVOKED: 1090 wdev->wext.connect.privacy = data->value; 1091 return 0; 1092 case IW_AUTH_WPA_VERSION: 1093 return cfg80211_set_wpa_version(wdev, data->value); 1094 case IW_AUTH_CIPHER_GROUP: 1095 return cfg80211_set_cipher_group(wdev, data->value); 1096 case IW_AUTH_KEY_MGMT: 1097 return cfg80211_set_key_mgt(wdev, data->value); 1098 case IW_AUTH_CIPHER_PAIRWISE: 1099 return cfg80211_set_cipher_pairwise(wdev, data->value); 1100 case IW_AUTH_80211_AUTH_ALG: 1101 return cfg80211_set_auth_alg(wdev, data->value); 1102 case IW_AUTH_WPA_ENABLED: 1103 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1104 case IW_AUTH_DROP_UNENCRYPTED: 1105 case IW_AUTH_MFP: 1106 return 0; 1107 default: 1108 return -EOPNOTSUPP; 1109 } 1110 } 1111 1112 static int cfg80211_wext_giwauth(struct net_device *dev, 1113 struct iw_request_info *info, 1114 union iwreq_data *wrqu, char *extra) 1115 { 1116 /* XXX: what do we need? */ 1117 1118 return -EOPNOTSUPP; 1119 } 1120 1121 static int cfg80211_wext_siwpower(struct net_device *dev, 1122 struct iw_request_info *info, 1123 union iwreq_data *wrqu, char *extra) 1124 { 1125 struct iw_param *wrq = &wrqu->power; 1126 struct wireless_dev *wdev = dev->ieee80211_ptr; 1127 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1128 bool ps; 1129 int timeout = wdev->ps_timeout; 1130 int err; 1131 1132 if (wdev->iftype != NL80211_IFTYPE_STATION) 1133 return -EINVAL; 1134 1135 if (!rdev->ops->set_power_mgmt) 1136 return -EOPNOTSUPP; 1137 1138 if (wrq->disabled) { 1139 ps = false; 1140 } else { 1141 switch (wrq->flags & IW_POWER_MODE) { 1142 case IW_POWER_ON: /* If not specified */ 1143 case IW_POWER_MODE: /* If set all mask */ 1144 case IW_POWER_ALL_R: /* If explicitly state all */ 1145 ps = true; 1146 break; 1147 default: /* Otherwise we ignore */ 1148 return -EINVAL; 1149 } 1150 1151 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT)) 1152 return -EINVAL; 1153 1154 if (wrq->flags & IW_POWER_TIMEOUT) 1155 timeout = wrq->value / 1000; 1156 } 1157 1158 guard(wiphy)(&rdev->wiphy); 1159 1160 err = rdev_set_power_mgmt(rdev, dev, ps, timeout); 1161 if (err) 1162 return err; 1163 1164 wdev->ps = ps; 1165 wdev->ps_timeout = timeout; 1166 1167 return 0; 1168 1169 } 1170 1171 static int cfg80211_wext_giwpower(struct net_device *dev, 1172 struct iw_request_info *info, 1173 union iwreq_data *wrqu, char *extra) 1174 { 1175 struct iw_param *wrq = &wrqu->power; 1176 struct wireless_dev *wdev = dev->ieee80211_ptr; 1177 1178 wrq->disabled = !wdev->ps; 1179 1180 return 0; 1181 } 1182 1183 static int cfg80211_wext_siwrate(struct net_device *dev, 1184 struct iw_request_info *info, 1185 union iwreq_data *wrqu, char *extra) 1186 { 1187 struct iw_param *rate = &wrqu->bitrate; 1188 struct wireless_dev *wdev = dev->ieee80211_ptr; 1189 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1190 struct cfg80211_bitrate_mask mask; 1191 u32 fixed, maxrate; 1192 struct ieee80211_supported_band *sband; 1193 bool match = false; 1194 int band, ridx; 1195 1196 if (!rdev->ops->set_bitrate_mask) 1197 return -EOPNOTSUPP; 1198 1199 memset(&mask, 0, sizeof(mask)); 1200 fixed = 0; 1201 maxrate = (u32)-1; 1202 1203 if (rate->value < 0) { 1204 /* nothing */ 1205 } else if (rate->fixed) { 1206 fixed = rate->value / 100000; 1207 } else { 1208 maxrate = rate->value / 100000; 1209 } 1210 1211 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1212 sband = wdev->wiphy->bands[band]; 1213 if (sband == NULL) 1214 continue; 1215 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 1216 struct ieee80211_rate *srate = &sband->bitrates[ridx]; 1217 if (fixed == srate->bitrate) { 1218 mask.control[band].legacy = 1 << ridx; 1219 match = true; 1220 break; 1221 } 1222 if (srate->bitrate <= maxrate) { 1223 mask.control[band].legacy |= 1 << ridx; 1224 match = true; 1225 } 1226 } 1227 } 1228 1229 if (!match) 1230 return -EINVAL; 1231 1232 guard(wiphy)(&rdev->wiphy); 1233 1234 if (dev->ieee80211_ptr->valid_links) 1235 return -EOPNOTSUPP; 1236 1237 return rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask); 1238 } 1239 1240 static int cfg80211_wext_giwrate(struct net_device *dev, 1241 struct iw_request_info *info, 1242 union iwreq_data *wrqu, char *extra) 1243 { 1244 struct iw_param *rate = &wrqu->bitrate; 1245 struct wireless_dev *wdev = dev->ieee80211_ptr; 1246 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1247 struct station_info sinfo = {}; 1248 u8 addr[ETH_ALEN]; 1249 int err; 1250 1251 if (wdev->iftype != NL80211_IFTYPE_STATION) 1252 return -EOPNOTSUPP; 1253 1254 if (!rdev->ops->get_station) 1255 return -EOPNOTSUPP; 1256 1257 err = 0; 1258 if (!wdev->valid_links && wdev->links[0].client.current_bss) 1259 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid, 1260 ETH_ALEN); 1261 else 1262 err = -EOPNOTSUPP; 1263 if (err) 1264 return err; 1265 1266 scoped_guard(wiphy, &rdev->wiphy) { 1267 err = rdev_get_station(rdev, wdev, addr, &sinfo); 1268 } 1269 if (err) 1270 return err; 1271 1272 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { 1273 err = -EOPNOTSUPP; 1274 goto free; 1275 } 1276 1277 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); 1278 1279 free: 1280 cfg80211_sinfo_release_content(&sinfo); 1281 return err; 1282 } 1283 1284 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ 1285 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) 1286 { 1287 struct wireless_dev *wdev = dev->ieee80211_ptr; 1288 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1289 /* we are under RTNL - globally locked - so can use static structs */ 1290 static struct iw_statistics wstats; 1291 static struct station_info sinfo = {}; 1292 u8 bssid[ETH_ALEN]; 1293 int ret; 1294 1295 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) 1296 return NULL; 1297 1298 if (!rdev->ops->get_station) 1299 return NULL; 1300 1301 /* Grab BSSID of current BSS, if any */ 1302 wiphy_lock(&rdev->wiphy); 1303 if (wdev->valid_links || !wdev->links[0].client.current_bss) { 1304 wiphy_unlock(&rdev->wiphy); 1305 return NULL; 1306 } 1307 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN); 1308 1309 memset(&sinfo, 0, sizeof(sinfo)); 1310 1311 ret = rdev_get_station(rdev, wdev, bssid, &sinfo); 1312 wiphy_unlock(&rdev->wiphy); 1313 1314 if (ret) 1315 return NULL; 1316 1317 memset(&wstats, 0, sizeof(wstats)); 1318 1319 switch (rdev->wiphy.signal_type) { 1320 case CFG80211_SIGNAL_TYPE_MBM: 1321 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1322 int sig = sinfo.signal; 1323 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1324 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1325 wstats.qual.updated |= IW_QUAL_DBM; 1326 wstats.qual.level = sig; 1327 if (sig < -110) 1328 sig = -110; 1329 else if (sig > -40) 1330 sig = -40; 1331 wstats.qual.qual = sig + 110; 1332 break; 1333 } 1334 fallthrough; 1335 case CFG80211_SIGNAL_TYPE_UNSPEC: 1336 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1337 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1338 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1339 wstats.qual.level = sinfo.signal; 1340 wstats.qual.qual = sinfo.signal; 1341 break; 1342 } 1343 fallthrough; 1344 default: 1345 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID; 1346 wstats.qual.updated |= IW_QUAL_QUAL_INVALID; 1347 } 1348 1349 wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1350 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) 1351 wstats.discard.misc = sinfo.rx_dropped_misc; 1352 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) 1353 wstats.discard.retries = sinfo.tx_failed; 1354 1355 cfg80211_sinfo_release_content(&sinfo); 1356 1357 return &wstats; 1358 } 1359 1360 static int cfg80211_wext_siwap(struct net_device *dev, 1361 struct iw_request_info *info, 1362 union iwreq_data *wrqu, char *extra) 1363 { 1364 struct sockaddr *ap_addr = &wrqu->ap_addr; 1365 struct wireless_dev *wdev = dev->ieee80211_ptr; 1366 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1367 1368 guard(wiphy)(&rdev->wiphy); 1369 1370 switch (wdev->iftype) { 1371 case NL80211_IFTYPE_ADHOC: 1372 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); 1373 case NL80211_IFTYPE_STATION: 1374 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra); 1375 default: 1376 return -EOPNOTSUPP; 1377 } 1378 } 1379 1380 static int cfg80211_wext_giwap(struct net_device *dev, 1381 struct iw_request_info *info, 1382 union iwreq_data *wrqu, char *extra) 1383 { 1384 struct sockaddr *ap_addr = &wrqu->ap_addr; 1385 struct wireless_dev *wdev = dev->ieee80211_ptr; 1386 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1387 1388 guard(wiphy)(&rdev->wiphy); 1389 1390 switch (wdev->iftype) { 1391 case NL80211_IFTYPE_ADHOC: 1392 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); 1393 case NL80211_IFTYPE_STATION: 1394 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra); 1395 default: 1396 return -EOPNOTSUPP; 1397 } 1398 } 1399 1400 static int cfg80211_wext_siwessid(struct net_device *dev, 1401 struct iw_request_info *info, 1402 union iwreq_data *wrqu, char *ssid) 1403 { 1404 struct iw_point *data = &wrqu->data; 1405 struct wireless_dev *wdev = dev->ieee80211_ptr; 1406 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1407 1408 guard(wiphy)(&rdev->wiphy); 1409 1410 switch (wdev->iftype) { 1411 case NL80211_IFTYPE_ADHOC: 1412 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid); 1413 case NL80211_IFTYPE_STATION: 1414 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid); 1415 default: 1416 return -EOPNOTSUPP; 1417 } 1418 } 1419 1420 static int cfg80211_wext_giwessid(struct net_device *dev, 1421 struct iw_request_info *info, 1422 union iwreq_data *wrqu, char *ssid) 1423 { 1424 struct iw_point *data = &wrqu->data; 1425 struct wireless_dev *wdev = dev->ieee80211_ptr; 1426 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1427 1428 data->flags = 0; 1429 data->length = 0; 1430 1431 guard(wiphy)(&rdev->wiphy); 1432 1433 switch (wdev->iftype) { 1434 case NL80211_IFTYPE_ADHOC: 1435 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid); 1436 case NL80211_IFTYPE_STATION: 1437 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid); 1438 default: 1439 return -EOPNOTSUPP; 1440 } 1441 } 1442 1443 static int cfg80211_wext_siwpmksa(struct net_device *dev, 1444 struct iw_request_info *info, 1445 union iwreq_data *wrqu, char *extra) 1446 { 1447 struct wireless_dev *wdev = dev->ieee80211_ptr; 1448 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1449 struct cfg80211_pmksa cfg_pmksa; 1450 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra; 1451 1452 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa)); 1453 1454 if (wdev->iftype != NL80211_IFTYPE_STATION) 1455 return -EINVAL; 1456 1457 cfg_pmksa.bssid = pmksa->bssid.sa_data; 1458 cfg_pmksa.pmkid = pmksa->pmkid; 1459 1460 guard(wiphy)(&rdev->wiphy); 1461 1462 switch (pmksa->cmd) { 1463 case IW_PMKSA_ADD: 1464 if (!rdev->ops->set_pmksa) 1465 return -EOPNOTSUPP; 1466 1467 return rdev_set_pmksa(rdev, dev, &cfg_pmksa); 1468 case IW_PMKSA_REMOVE: 1469 if (!rdev->ops->del_pmksa) 1470 return -EOPNOTSUPP; 1471 1472 return rdev_del_pmksa(rdev, dev, &cfg_pmksa); 1473 case IW_PMKSA_FLUSH: 1474 if (!rdev->ops->flush_pmksa) 1475 return -EOPNOTSUPP; 1476 1477 return rdev_flush_pmksa(rdev, dev); 1478 default: 1479 return -EOPNOTSUPP; 1480 } 1481 } 1482 1483 static const iw_handler cfg80211_handlers[] = { 1484 IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname), 1485 IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq), 1486 IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq), 1487 IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode), 1488 IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode), 1489 IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange), 1490 IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap), 1491 IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap), 1492 IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme), 1493 IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan), 1494 IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan), 1495 IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid), 1496 IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid), 1497 IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate), 1498 IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate), 1499 IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts), 1500 IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts), 1501 IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag), 1502 IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag), 1503 IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower), 1504 IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower), 1505 IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry), 1506 IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry), 1507 IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode), 1508 IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode), 1509 IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower), 1510 IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower), 1511 IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie), 1512 IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth), 1513 IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth), 1514 IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext), 1515 IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa), 1516 }; 1517 1518 const struct iw_handler_def cfg80211_wext_handler = { 1519 .num_standard = ARRAY_SIZE(cfg80211_handlers), 1520 .standard = cfg80211_handlers, 1521 .get_wireless_stats = cfg80211_wireless_stats, 1522 }; 1523