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 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, 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, 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, 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(sizeof(*wdev->wext.keys), 418 GFP_KERNEL); 419 if (!wdev->wext.keys) 420 return -ENOMEM; 421 for (i = 0; i < 4; i++) 422 wdev->wext.keys->params[i].key = 423 wdev->wext.keys->data[i]; 424 } 425 426 if (wdev->iftype != NL80211_IFTYPE_ADHOC && 427 wdev->iftype != NL80211_IFTYPE_STATION) 428 return -EOPNOTSUPP; 429 430 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 431 if (!wdev->connected) 432 return -ENOLINK; 433 434 if (!rdev->ops->set_default_mgmt_key) 435 return -EOPNOTSUPP; 436 437 if (idx < 4 || idx > 5) 438 return -EINVAL; 439 } else if (idx < 0 || idx > 3) 440 return -EINVAL; 441 442 if (remove) { 443 err = 0; 444 if (wdev->connected || 445 (wdev->iftype == NL80211_IFTYPE_ADHOC && 446 wdev->u.ibss.current_bss)) { 447 /* 448 * If removing the current TX key, we will need to 449 * join a new IBSS without the privacy bit clear. 450 */ 451 if (idx == wdev->wext.default_key && 452 wdev->iftype == NL80211_IFTYPE_ADHOC) { 453 cfg80211_leave_ibss(rdev, wdev->netdev, true); 454 rejoin = true; 455 } 456 457 if (!pairwise && addr && 458 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 459 err = -ENOENT; 460 else 461 err = rdev_del_key(rdev, dev, -1, idx, pairwise, 462 addr); 463 } 464 wdev->wext.connect.privacy = false; 465 /* 466 * Applications using wireless extensions expect to be 467 * able to delete keys that don't exist, so allow that. 468 */ 469 if (err == -ENOENT) 470 err = 0; 471 if (!err) { 472 if (!addr && idx < 4) { 473 memset(wdev->wext.keys->data[idx], 0, 474 sizeof(wdev->wext.keys->data[idx])); 475 wdev->wext.keys->params[idx].key_len = 0; 476 wdev->wext.keys->params[idx].cipher = 0; 477 } 478 if (idx == wdev->wext.default_key) 479 wdev->wext.default_key = -1; 480 else if (idx == wdev->wext.default_mgmt_key) 481 wdev->wext.default_mgmt_key = -1; 482 } 483 484 if (!err && rejoin) 485 err = cfg80211_ibss_wext_join(rdev, wdev); 486 487 return err; 488 } 489 490 if (addr) 491 tx_key = false; 492 493 if (cfg80211_validate_key_settings(rdev, params, idx, 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, dev, -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, dev, -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 < 4 || idx > 5) { 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 return cfg80211_set_monitor_channel(rdev, dev, &chandef); 794 case NL80211_IFTYPE_MESH_POINT: 795 freq = cfg80211_wext_freq(wextfreq); 796 if (freq < 0) 797 return freq; 798 if (freq == 0) 799 return -EINVAL; 800 chandef.center_freq1 = freq; 801 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 802 if (!chandef.chan) 803 return -EINVAL; 804 return cfg80211_set_mesh_channel(rdev, wdev, &chandef); 805 default: 806 return -EOPNOTSUPP; 807 } 808 } 809 810 static int cfg80211_wext_giwfreq(struct net_device *dev, 811 struct iw_request_info *info, 812 union iwreq_data *wrqu, char *extra) 813 { 814 struct iw_freq *freq = &wrqu->freq; 815 struct wireless_dev *wdev = dev->ieee80211_ptr; 816 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 817 struct cfg80211_chan_def chandef = {}; 818 int ret; 819 820 guard(wiphy)(&rdev->wiphy); 821 822 switch (wdev->iftype) { 823 case NL80211_IFTYPE_STATION: 824 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra); 825 case NL80211_IFTYPE_ADHOC: 826 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); 827 case NL80211_IFTYPE_MONITOR: 828 if (!rdev->ops->get_channel) 829 return -EINVAL; 830 831 ret = rdev_get_channel(rdev, wdev, 0, &chandef); 832 if (ret) 833 return ret; 834 freq->m = chandef.chan->center_freq; 835 freq->e = 6; 836 return ret; 837 default: 838 return -EINVAL; 839 } 840 } 841 842 static int cfg80211_wext_siwtxpower(struct net_device *dev, 843 struct iw_request_info *info, 844 union iwreq_data *data, char *extra) 845 { 846 struct wireless_dev *wdev = dev->ieee80211_ptr; 847 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 848 enum nl80211_tx_power_setting type; 849 int dbm = 0; 850 851 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 852 return -EINVAL; 853 if (data->txpower.flags & IW_TXPOW_RANGE) 854 return -EINVAL; 855 856 if (!rdev->ops->set_tx_power) 857 return -EOPNOTSUPP; 858 859 /* only change when not disabling */ 860 if (!data->txpower.disabled) { 861 rfkill_set_sw_state(rdev->wiphy.rfkill, false); 862 863 if (data->txpower.fixed) { 864 /* 865 * wext doesn't support negative values, see 866 * below where it's for automatic 867 */ 868 if (data->txpower.value < 0) 869 return -EINVAL; 870 dbm = data->txpower.value; 871 type = NL80211_TX_POWER_FIXED; 872 /* TODO: do regulatory check! */ 873 } else { 874 /* 875 * Automatic power level setting, max being the value 876 * passed in from userland. 877 */ 878 if (data->txpower.value < 0) { 879 type = NL80211_TX_POWER_AUTOMATIC; 880 } else { 881 dbm = data->txpower.value; 882 type = NL80211_TX_POWER_LIMITED; 883 } 884 } 885 } else { 886 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true)) 887 schedule_work(&rdev->rfkill_block); 888 return 0; 889 } 890 891 guard(wiphy)(&rdev->wiphy); 892 893 return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm)); 894 } 895 896 static int cfg80211_wext_giwtxpower(struct net_device *dev, 897 struct iw_request_info *info, 898 union iwreq_data *data, char *extra) 899 { 900 struct wireless_dev *wdev = dev->ieee80211_ptr; 901 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 902 int err, val; 903 904 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 905 return -EINVAL; 906 if (data->txpower.flags & IW_TXPOW_RANGE) 907 return -EINVAL; 908 909 if (!rdev->ops->get_tx_power) 910 return -EOPNOTSUPP; 911 912 scoped_guard(wiphy, &rdev->wiphy) { 913 err = rdev_get_tx_power(rdev, wdev, 0, &val); 914 } 915 if (err) 916 return err; 917 918 /* well... oh well */ 919 data->txpower.fixed = 1; 920 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill); 921 data->txpower.value = val; 922 data->txpower.flags = IW_TXPOW_DBM; 923 924 return 0; 925 } 926 927 static int cfg80211_set_auth_alg(struct wireless_dev *wdev, 928 s32 auth_alg) 929 { 930 int nr_alg = 0; 931 932 if (!auth_alg) 933 return -EINVAL; 934 935 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM | 936 IW_AUTH_ALG_SHARED_KEY | 937 IW_AUTH_ALG_LEAP)) 938 return -EINVAL; 939 940 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) { 941 nr_alg++; 942 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; 943 } 944 945 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) { 946 nr_alg++; 947 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY; 948 } 949 950 if (auth_alg & IW_AUTH_ALG_LEAP) { 951 nr_alg++; 952 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP; 953 } 954 955 if (nr_alg > 1) 956 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 957 958 return 0; 959 } 960 961 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions) 962 { 963 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA | 964 IW_AUTH_WPA_VERSION_WPA2| 965 IW_AUTH_WPA_VERSION_DISABLED)) 966 return -EINVAL; 967 968 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) && 969 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA| 970 IW_AUTH_WPA_VERSION_WPA2))) 971 return -EINVAL; 972 973 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) 974 wdev->wext.connect.crypto.wpa_versions &= 975 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2); 976 977 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA) 978 wdev->wext.connect.crypto.wpa_versions |= 979 NL80211_WPA_VERSION_1; 980 981 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2) 982 wdev->wext.connect.crypto.wpa_versions |= 983 NL80211_WPA_VERSION_2; 984 985 return 0; 986 } 987 988 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher) 989 { 990 if (cipher & IW_AUTH_CIPHER_WEP40) 991 wdev->wext.connect.crypto.cipher_group = 992 WLAN_CIPHER_SUITE_WEP40; 993 else if (cipher & IW_AUTH_CIPHER_WEP104) 994 wdev->wext.connect.crypto.cipher_group = 995 WLAN_CIPHER_SUITE_WEP104; 996 else if (cipher & IW_AUTH_CIPHER_TKIP) 997 wdev->wext.connect.crypto.cipher_group = 998 WLAN_CIPHER_SUITE_TKIP; 999 else if (cipher & IW_AUTH_CIPHER_CCMP) 1000 wdev->wext.connect.crypto.cipher_group = 1001 WLAN_CIPHER_SUITE_CCMP; 1002 else if (cipher & IW_AUTH_CIPHER_AES_CMAC) 1003 wdev->wext.connect.crypto.cipher_group = 1004 WLAN_CIPHER_SUITE_AES_CMAC; 1005 else if (cipher & IW_AUTH_CIPHER_NONE) 1006 wdev->wext.connect.crypto.cipher_group = 0; 1007 else 1008 return -EINVAL; 1009 1010 return 0; 1011 } 1012 1013 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher) 1014 { 1015 int nr_ciphers = 0; 1016 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise; 1017 1018 if (cipher & IW_AUTH_CIPHER_WEP40) { 1019 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40; 1020 nr_ciphers++; 1021 } 1022 1023 if (cipher & IW_AUTH_CIPHER_WEP104) { 1024 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104; 1025 nr_ciphers++; 1026 } 1027 1028 if (cipher & IW_AUTH_CIPHER_TKIP) { 1029 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP; 1030 nr_ciphers++; 1031 } 1032 1033 if (cipher & IW_AUTH_CIPHER_CCMP) { 1034 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP; 1035 nr_ciphers++; 1036 } 1037 1038 if (cipher & IW_AUTH_CIPHER_AES_CMAC) { 1039 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC; 1040 nr_ciphers++; 1041 } 1042 1043 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5); 1044 1045 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers; 1046 1047 return 0; 1048 } 1049 1050 1051 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) 1052 { 1053 int nr_akm_suites = 0; 1054 1055 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X | 1056 IW_AUTH_KEY_MGMT_PSK)) 1057 return -EINVAL; 1058 1059 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) { 1060 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1061 WLAN_AKM_SUITE_8021X; 1062 nr_akm_suites++; 1063 } 1064 1065 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) { 1066 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1067 WLAN_AKM_SUITE_PSK; 1068 nr_akm_suites++; 1069 } 1070 1071 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites; 1072 1073 return 0; 1074 } 1075 1076 static int cfg80211_wext_siwauth(struct net_device *dev, 1077 struct iw_request_info *info, 1078 union iwreq_data *wrqu, char *extra) 1079 { 1080 struct iw_param *data = &wrqu->param; 1081 struct wireless_dev *wdev = dev->ieee80211_ptr; 1082 1083 if (wdev->iftype != NL80211_IFTYPE_STATION) 1084 return -EOPNOTSUPP; 1085 1086 switch (data->flags & IW_AUTH_INDEX) { 1087 case IW_AUTH_PRIVACY_INVOKED: 1088 wdev->wext.connect.privacy = data->value; 1089 return 0; 1090 case IW_AUTH_WPA_VERSION: 1091 return cfg80211_set_wpa_version(wdev, data->value); 1092 case IW_AUTH_CIPHER_GROUP: 1093 return cfg80211_set_cipher_group(wdev, data->value); 1094 case IW_AUTH_KEY_MGMT: 1095 return cfg80211_set_key_mgt(wdev, data->value); 1096 case IW_AUTH_CIPHER_PAIRWISE: 1097 return cfg80211_set_cipher_pairwise(wdev, data->value); 1098 case IW_AUTH_80211_AUTH_ALG: 1099 return cfg80211_set_auth_alg(wdev, data->value); 1100 case IW_AUTH_WPA_ENABLED: 1101 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1102 case IW_AUTH_DROP_UNENCRYPTED: 1103 case IW_AUTH_MFP: 1104 return 0; 1105 default: 1106 return -EOPNOTSUPP; 1107 } 1108 } 1109 1110 static int cfg80211_wext_giwauth(struct net_device *dev, 1111 struct iw_request_info *info, 1112 union iwreq_data *wrqu, char *extra) 1113 { 1114 /* XXX: what do we need? */ 1115 1116 return -EOPNOTSUPP; 1117 } 1118 1119 static int cfg80211_wext_siwpower(struct net_device *dev, 1120 struct iw_request_info *info, 1121 union iwreq_data *wrqu, char *extra) 1122 { 1123 struct iw_param *wrq = &wrqu->power; 1124 struct wireless_dev *wdev = dev->ieee80211_ptr; 1125 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1126 bool ps; 1127 int timeout = wdev->ps_timeout; 1128 int err; 1129 1130 if (wdev->iftype != NL80211_IFTYPE_STATION) 1131 return -EINVAL; 1132 1133 if (!rdev->ops->set_power_mgmt) 1134 return -EOPNOTSUPP; 1135 1136 if (wrq->disabled) { 1137 ps = false; 1138 } else { 1139 switch (wrq->flags & IW_POWER_MODE) { 1140 case IW_POWER_ON: /* If not specified */ 1141 case IW_POWER_MODE: /* If set all mask */ 1142 case IW_POWER_ALL_R: /* If explicitly state all */ 1143 ps = true; 1144 break; 1145 default: /* Otherwise we ignore */ 1146 return -EINVAL; 1147 } 1148 1149 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT)) 1150 return -EINVAL; 1151 1152 if (wrq->flags & IW_POWER_TIMEOUT) 1153 timeout = wrq->value / 1000; 1154 } 1155 1156 guard(wiphy)(&rdev->wiphy); 1157 1158 err = rdev_set_power_mgmt(rdev, dev, ps, timeout); 1159 if (err) 1160 return err; 1161 1162 wdev->ps = ps; 1163 wdev->ps_timeout = timeout; 1164 1165 return 0; 1166 1167 } 1168 1169 static int cfg80211_wext_giwpower(struct net_device *dev, 1170 struct iw_request_info *info, 1171 union iwreq_data *wrqu, char *extra) 1172 { 1173 struct iw_param *wrq = &wrqu->power; 1174 struct wireless_dev *wdev = dev->ieee80211_ptr; 1175 1176 wrq->disabled = !wdev->ps; 1177 1178 return 0; 1179 } 1180 1181 static int cfg80211_wext_siwrate(struct net_device *dev, 1182 struct iw_request_info *info, 1183 union iwreq_data *wrqu, char *extra) 1184 { 1185 struct iw_param *rate = &wrqu->bitrate; 1186 struct wireless_dev *wdev = dev->ieee80211_ptr; 1187 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1188 struct cfg80211_bitrate_mask mask; 1189 u32 fixed, maxrate; 1190 struct ieee80211_supported_band *sband; 1191 bool match = false; 1192 int band, ridx; 1193 1194 if (!rdev->ops->set_bitrate_mask) 1195 return -EOPNOTSUPP; 1196 1197 memset(&mask, 0, sizeof(mask)); 1198 fixed = 0; 1199 maxrate = (u32)-1; 1200 1201 if (rate->value < 0) { 1202 /* nothing */ 1203 } else if (rate->fixed) { 1204 fixed = rate->value / 100000; 1205 } else { 1206 maxrate = rate->value / 100000; 1207 } 1208 1209 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1210 sband = wdev->wiphy->bands[band]; 1211 if (sband == NULL) 1212 continue; 1213 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 1214 struct ieee80211_rate *srate = &sband->bitrates[ridx]; 1215 if (fixed == srate->bitrate) { 1216 mask.control[band].legacy = 1 << ridx; 1217 match = true; 1218 break; 1219 } 1220 if (srate->bitrate <= maxrate) { 1221 mask.control[band].legacy |= 1 << ridx; 1222 match = true; 1223 } 1224 } 1225 } 1226 1227 if (!match) 1228 return -EINVAL; 1229 1230 guard(wiphy)(&rdev->wiphy); 1231 1232 if (dev->ieee80211_ptr->valid_links) 1233 return -EOPNOTSUPP; 1234 1235 return rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask); 1236 } 1237 1238 static int cfg80211_wext_giwrate(struct net_device *dev, 1239 struct iw_request_info *info, 1240 union iwreq_data *wrqu, char *extra) 1241 { 1242 struct iw_param *rate = &wrqu->bitrate; 1243 struct wireless_dev *wdev = dev->ieee80211_ptr; 1244 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1245 struct station_info sinfo = {}; 1246 u8 addr[ETH_ALEN]; 1247 int err; 1248 1249 if (wdev->iftype != NL80211_IFTYPE_STATION) 1250 return -EOPNOTSUPP; 1251 1252 if (!rdev->ops->get_station) 1253 return -EOPNOTSUPP; 1254 1255 err = 0; 1256 if (!wdev->valid_links && wdev->links[0].client.current_bss) 1257 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid, 1258 ETH_ALEN); 1259 else 1260 err = -EOPNOTSUPP; 1261 if (err) 1262 return err; 1263 1264 scoped_guard(wiphy, &rdev->wiphy) { 1265 err = rdev_get_station(rdev, dev, addr, &sinfo); 1266 } 1267 if (err) 1268 return err; 1269 1270 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { 1271 err = -EOPNOTSUPP; 1272 goto free; 1273 } 1274 1275 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); 1276 1277 free: 1278 cfg80211_sinfo_release_content(&sinfo); 1279 return err; 1280 } 1281 1282 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ 1283 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) 1284 { 1285 struct wireless_dev *wdev = dev->ieee80211_ptr; 1286 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1287 /* we are under RTNL - globally locked - so can use static structs */ 1288 static struct iw_statistics wstats; 1289 static struct station_info sinfo = {}; 1290 u8 bssid[ETH_ALEN]; 1291 int ret; 1292 1293 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) 1294 return NULL; 1295 1296 if (!rdev->ops->get_station) 1297 return NULL; 1298 1299 /* Grab BSSID of current BSS, if any */ 1300 wiphy_lock(&rdev->wiphy); 1301 if (wdev->valid_links || !wdev->links[0].client.current_bss) { 1302 wiphy_unlock(&rdev->wiphy); 1303 return NULL; 1304 } 1305 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN); 1306 1307 memset(&sinfo, 0, sizeof(sinfo)); 1308 1309 ret = rdev_get_station(rdev, dev, bssid, &sinfo); 1310 wiphy_unlock(&rdev->wiphy); 1311 1312 if (ret) 1313 return NULL; 1314 1315 memset(&wstats, 0, sizeof(wstats)); 1316 1317 switch (rdev->wiphy.signal_type) { 1318 case CFG80211_SIGNAL_TYPE_MBM: 1319 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1320 int sig = sinfo.signal; 1321 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1322 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1323 wstats.qual.updated |= IW_QUAL_DBM; 1324 wstats.qual.level = sig; 1325 if (sig < -110) 1326 sig = -110; 1327 else if (sig > -40) 1328 sig = -40; 1329 wstats.qual.qual = sig + 110; 1330 break; 1331 } 1332 fallthrough; 1333 case CFG80211_SIGNAL_TYPE_UNSPEC: 1334 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1335 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1336 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1337 wstats.qual.level = sinfo.signal; 1338 wstats.qual.qual = sinfo.signal; 1339 break; 1340 } 1341 fallthrough; 1342 default: 1343 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID; 1344 wstats.qual.updated |= IW_QUAL_QUAL_INVALID; 1345 } 1346 1347 wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1348 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) 1349 wstats.discard.misc = sinfo.rx_dropped_misc; 1350 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) 1351 wstats.discard.retries = sinfo.tx_failed; 1352 1353 cfg80211_sinfo_release_content(&sinfo); 1354 1355 return &wstats; 1356 } 1357 1358 static int cfg80211_wext_siwap(struct net_device *dev, 1359 struct iw_request_info *info, 1360 union iwreq_data *wrqu, char *extra) 1361 { 1362 struct sockaddr *ap_addr = &wrqu->ap_addr; 1363 struct wireless_dev *wdev = dev->ieee80211_ptr; 1364 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1365 1366 guard(wiphy)(&rdev->wiphy); 1367 1368 switch (wdev->iftype) { 1369 case NL80211_IFTYPE_ADHOC: 1370 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); 1371 case NL80211_IFTYPE_STATION: 1372 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra); 1373 default: 1374 return -EOPNOTSUPP; 1375 } 1376 } 1377 1378 static int cfg80211_wext_giwap(struct net_device *dev, 1379 struct iw_request_info *info, 1380 union iwreq_data *wrqu, char *extra) 1381 { 1382 struct sockaddr *ap_addr = &wrqu->ap_addr; 1383 struct wireless_dev *wdev = dev->ieee80211_ptr; 1384 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1385 1386 guard(wiphy)(&rdev->wiphy); 1387 1388 switch (wdev->iftype) { 1389 case NL80211_IFTYPE_ADHOC: 1390 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); 1391 case NL80211_IFTYPE_STATION: 1392 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra); 1393 default: 1394 return -EOPNOTSUPP; 1395 } 1396 } 1397 1398 static int cfg80211_wext_siwessid(struct net_device *dev, 1399 struct iw_request_info *info, 1400 union iwreq_data *wrqu, char *ssid) 1401 { 1402 struct iw_point *data = &wrqu->data; 1403 struct wireless_dev *wdev = dev->ieee80211_ptr; 1404 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1405 1406 guard(wiphy)(&rdev->wiphy); 1407 1408 switch (wdev->iftype) { 1409 case NL80211_IFTYPE_ADHOC: 1410 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid); 1411 case NL80211_IFTYPE_STATION: 1412 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid); 1413 default: 1414 return -EOPNOTSUPP; 1415 } 1416 } 1417 1418 static int cfg80211_wext_giwessid(struct net_device *dev, 1419 struct iw_request_info *info, 1420 union iwreq_data *wrqu, char *ssid) 1421 { 1422 struct iw_point *data = &wrqu->data; 1423 struct wireless_dev *wdev = dev->ieee80211_ptr; 1424 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1425 1426 data->flags = 0; 1427 data->length = 0; 1428 1429 guard(wiphy)(&rdev->wiphy); 1430 1431 switch (wdev->iftype) { 1432 case NL80211_IFTYPE_ADHOC: 1433 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid); 1434 case NL80211_IFTYPE_STATION: 1435 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid); 1436 default: 1437 return -EOPNOTSUPP; 1438 } 1439 } 1440 1441 static int cfg80211_wext_siwpmksa(struct net_device *dev, 1442 struct iw_request_info *info, 1443 union iwreq_data *wrqu, char *extra) 1444 { 1445 struct wireless_dev *wdev = dev->ieee80211_ptr; 1446 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1447 struct cfg80211_pmksa cfg_pmksa; 1448 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra; 1449 1450 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa)); 1451 1452 if (wdev->iftype != NL80211_IFTYPE_STATION) 1453 return -EINVAL; 1454 1455 cfg_pmksa.bssid = pmksa->bssid.sa_data; 1456 cfg_pmksa.pmkid = pmksa->pmkid; 1457 1458 guard(wiphy)(&rdev->wiphy); 1459 1460 switch (pmksa->cmd) { 1461 case IW_PMKSA_ADD: 1462 if (!rdev->ops->set_pmksa) 1463 return -EOPNOTSUPP; 1464 1465 return rdev_set_pmksa(rdev, dev, &cfg_pmksa); 1466 case IW_PMKSA_REMOVE: 1467 if (!rdev->ops->del_pmksa) 1468 return -EOPNOTSUPP; 1469 1470 return rdev_del_pmksa(rdev, dev, &cfg_pmksa); 1471 case IW_PMKSA_FLUSH: 1472 if (!rdev->ops->flush_pmksa) 1473 return -EOPNOTSUPP; 1474 1475 return rdev_flush_pmksa(rdev, dev); 1476 default: 1477 return -EOPNOTSUPP; 1478 } 1479 } 1480 1481 static const iw_handler cfg80211_handlers[] = { 1482 IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname), 1483 IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq), 1484 IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq), 1485 IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode), 1486 IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode), 1487 IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange), 1488 IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap), 1489 IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap), 1490 IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme), 1491 IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan), 1492 IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan), 1493 IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid), 1494 IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid), 1495 IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate), 1496 IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate), 1497 IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts), 1498 IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts), 1499 IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag), 1500 IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag), 1501 IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower), 1502 IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower), 1503 IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry), 1504 IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry), 1505 IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode), 1506 IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode), 1507 IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower), 1508 IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower), 1509 IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie), 1510 IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth), 1511 IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth), 1512 IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext), 1513 IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa), 1514 }; 1515 1516 const struct iw_handler_def cfg80211_wext_handler = { 1517 .num_standard = ARRAY_SIZE(cfg80211_handlers), 1518 .standard = cfg80211_handlers, 1519 .get_wireless_stats = cfg80211_wireless_stats, 1520 }; 1521