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) 2019-2022 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 char *name, char *extra) 29 { 30 strcpy(name, "IEEE 802.11"); 31 return 0; 32 } 33 EXPORT_WEXT_HANDLER(cfg80211_wext_giwname); 34 35 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 36 u32 *mode, char *extra) 37 { 38 struct wireless_dev *wdev = dev->ieee80211_ptr; 39 struct cfg80211_registered_device *rdev; 40 struct vif_params vifparams; 41 enum nl80211_iftype type; 42 int ret; 43 44 rdev = wiphy_to_rdev(wdev->wiphy); 45 46 switch (*mode) { 47 case IW_MODE_INFRA: 48 type = NL80211_IFTYPE_STATION; 49 break; 50 case IW_MODE_ADHOC: 51 type = NL80211_IFTYPE_ADHOC; 52 break; 53 case IW_MODE_MONITOR: 54 type = NL80211_IFTYPE_MONITOR; 55 break; 56 default: 57 return -EINVAL; 58 } 59 60 if (type == wdev->iftype) 61 return 0; 62 63 memset(&vifparams, 0, sizeof(vifparams)); 64 65 wiphy_lock(wdev->wiphy); 66 ret = cfg80211_change_iface(rdev, dev, type, &vifparams); 67 wiphy_unlock(wdev->wiphy); 68 69 return ret; 70 } 71 EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode); 72 73 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 74 u32 *mode, char *extra) 75 { 76 struct wireless_dev *wdev = dev->ieee80211_ptr; 77 78 if (!wdev) 79 return -EOPNOTSUPP; 80 81 switch (wdev->iftype) { 82 case NL80211_IFTYPE_AP: 83 *mode = IW_MODE_MASTER; 84 break; 85 case NL80211_IFTYPE_STATION: 86 *mode = IW_MODE_INFRA; 87 break; 88 case NL80211_IFTYPE_ADHOC: 89 *mode = IW_MODE_ADHOC; 90 break; 91 case NL80211_IFTYPE_MONITOR: 92 *mode = IW_MODE_MONITOR; 93 break; 94 case NL80211_IFTYPE_WDS: 95 *mode = IW_MODE_REPEAT; 96 break; 97 case NL80211_IFTYPE_AP_VLAN: 98 *mode = IW_MODE_SECOND; /* FIXME */ 99 break; 100 default: 101 *mode = IW_MODE_AUTO; 102 break; 103 } 104 return 0; 105 } 106 EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode); 107 108 109 int cfg80211_wext_giwrange(struct net_device *dev, 110 struct iw_request_info *info, 111 struct iw_point *data, char *extra) 112 { 113 struct wireless_dev *wdev = dev->ieee80211_ptr; 114 struct iw_range *range = (struct iw_range *) extra; 115 enum nl80211_band band; 116 int i, c = 0; 117 118 if (!wdev) 119 return -EOPNOTSUPP; 120 121 data->length = sizeof(struct iw_range); 122 memset(range, 0, sizeof(struct iw_range)); 123 124 range->we_version_compiled = WIRELESS_EXT; 125 range->we_version_source = 21; 126 range->retry_capa = IW_RETRY_LIMIT; 127 range->retry_flags = IW_RETRY_LIMIT; 128 range->min_retry = 0; 129 range->max_retry = 255; 130 range->min_rts = 0; 131 range->max_rts = 2347; 132 range->min_frag = 256; 133 range->max_frag = 2346; 134 135 range->max_encoding_tokens = 4; 136 137 range->max_qual.updated = IW_QUAL_NOISE_INVALID; 138 139 switch (wdev->wiphy->signal_type) { 140 case CFG80211_SIGNAL_TYPE_NONE: 141 break; 142 case CFG80211_SIGNAL_TYPE_MBM: 143 range->max_qual.level = (u8)-110; 144 range->max_qual.qual = 70; 145 range->avg_qual.qual = 35; 146 range->max_qual.updated |= IW_QUAL_DBM; 147 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 148 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 149 break; 150 case CFG80211_SIGNAL_TYPE_UNSPEC: 151 range->max_qual.level = 100; 152 range->max_qual.qual = 100; 153 range->avg_qual.qual = 50; 154 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; 155 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; 156 break; 157 } 158 159 range->avg_qual.level = range->max_qual.level / 2; 160 range->avg_qual.noise = range->max_qual.noise / 2; 161 range->avg_qual.updated = range->max_qual.updated; 162 163 for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) { 164 switch (wdev->wiphy->cipher_suites[i]) { 165 case WLAN_CIPHER_SUITE_TKIP: 166 range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP | 167 IW_ENC_CAPA_WPA); 168 break; 169 170 case WLAN_CIPHER_SUITE_CCMP: 171 range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP | 172 IW_ENC_CAPA_WPA2); 173 break; 174 175 case WLAN_CIPHER_SUITE_WEP40: 176 range->encoding_size[range->num_encoding_sizes++] = 177 WLAN_KEY_LEN_WEP40; 178 break; 179 180 case WLAN_CIPHER_SUITE_WEP104: 181 range->encoding_size[range->num_encoding_sizes++] = 182 WLAN_KEY_LEN_WEP104; 183 break; 184 } 185 } 186 187 for (band = 0; band < NUM_NL80211_BANDS; band ++) { 188 struct ieee80211_supported_band *sband; 189 190 sband = wdev->wiphy->bands[band]; 191 192 if (!sband) 193 continue; 194 195 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) { 196 struct ieee80211_channel *chan = &sband->channels[i]; 197 198 if (!(chan->flags & IEEE80211_CHAN_DISABLED)) { 199 range->freq[c].i = 200 ieee80211_frequency_to_channel( 201 chan->center_freq); 202 range->freq[c].m = chan->center_freq; 203 range->freq[c].e = 6; 204 c++; 205 } 206 } 207 } 208 range->num_channels = c; 209 range->num_frequency = c; 210 211 IW_EVENT_CAPA_SET_KERNEL(range->event_capa); 212 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP); 213 IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN); 214 215 if (wdev->wiphy->max_scan_ssids > 0) 216 range->scan_capa |= IW_SCAN_CAPA_ESSID; 217 218 return 0; 219 } 220 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange); 221 222 223 /** 224 * cfg80211_wext_freq - get wext frequency for non-"auto" 225 * @freq: the wext freq encoding 226 * 227 * Returns a frequency, or a negative error code, or 0 for auto. 228 */ 229 int cfg80211_wext_freq(struct iw_freq *freq) 230 { 231 /* 232 * Parse frequency - return 0 for auto and 233 * -EINVAL for impossible things. 234 */ 235 if (freq->e == 0) { 236 enum nl80211_band band = NL80211_BAND_2GHZ; 237 if (freq->m < 0) 238 return 0; 239 if (freq->m > 14) 240 band = NL80211_BAND_5GHZ; 241 return ieee80211_channel_to_frequency(freq->m, band); 242 } else { 243 int i, div = 1000000; 244 for (i = 0; i < freq->e; i++) 245 div /= 10; 246 if (div <= 0) 247 return -EINVAL; 248 return freq->m / div; 249 } 250 } 251 252 int cfg80211_wext_siwrts(struct net_device *dev, 253 struct iw_request_info *info, 254 struct iw_param *rts, char *extra) 255 { 256 struct wireless_dev *wdev = dev->ieee80211_ptr; 257 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 258 u32 orts = wdev->wiphy->rts_threshold; 259 int err; 260 261 wiphy_lock(&rdev->wiphy); 262 if (rts->disabled || !rts->fixed) { 263 wdev->wiphy->rts_threshold = (u32) -1; 264 } else if (rts->value < 0) { 265 err = -EINVAL; 266 goto out; 267 } else { 268 wdev->wiphy->rts_threshold = rts->value; 269 } 270 271 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD); 272 273 if (err) 274 wdev->wiphy->rts_threshold = orts; 275 276 out: 277 wiphy_unlock(&rdev->wiphy); 278 return err; 279 } 280 EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts); 281 282 int cfg80211_wext_giwrts(struct net_device *dev, 283 struct iw_request_info *info, 284 struct iw_param *rts, char *extra) 285 { 286 struct wireless_dev *wdev = dev->ieee80211_ptr; 287 288 rts->value = wdev->wiphy->rts_threshold; 289 rts->disabled = rts->value == (u32) -1; 290 rts->fixed = 1; 291 292 return 0; 293 } 294 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts); 295 296 int cfg80211_wext_siwfrag(struct net_device *dev, 297 struct iw_request_info *info, 298 struct iw_param *frag, char *extra) 299 { 300 struct wireless_dev *wdev = dev->ieee80211_ptr; 301 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 302 u32 ofrag = wdev->wiphy->frag_threshold; 303 int err; 304 305 wiphy_lock(&rdev->wiphy); 306 if (frag->disabled || !frag->fixed) { 307 wdev->wiphy->frag_threshold = (u32) -1; 308 } else if (frag->value < 256) { 309 err = -EINVAL; 310 goto out; 311 } else { 312 /* Fragment length must be even, so strip LSB. */ 313 wdev->wiphy->frag_threshold = frag->value & ~0x1; 314 } 315 316 err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD); 317 if (err) 318 wdev->wiphy->frag_threshold = ofrag; 319 out: 320 wiphy_unlock(&rdev->wiphy); 321 322 return err; 323 } 324 EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag); 325 326 int cfg80211_wext_giwfrag(struct net_device *dev, 327 struct iw_request_info *info, 328 struct iw_param *frag, char *extra) 329 { 330 struct wireless_dev *wdev = dev->ieee80211_ptr; 331 332 frag->value = wdev->wiphy->frag_threshold; 333 frag->disabled = frag->value == (u32) -1; 334 frag->fixed = 1; 335 336 return 0; 337 } 338 EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag); 339 340 static int cfg80211_wext_siwretry(struct net_device *dev, 341 struct iw_request_info *info, 342 struct iw_param *retry, char *extra) 343 { 344 struct wireless_dev *wdev = dev->ieee80211_ptr; 345 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 346 u32 changed = 0; 347 u8 olong = wdev->wiphy->retry_long; 348 u8 oshort = wdev->wiphy->retry_short; 349 int err; 350 351 if (retry->disabled || retry->value < 1 || retry->value > 255 || 352 (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT) 353 return -EINVAL; 354 355 wiphy_lock(&rdev->wiphy); 356 if (retry->flags & IW_RETRY_LONG) { 357 wdev->wiphy->retry_long = retry->value; 358 changed |= WIPHY_PARAM_RETRY_LONG; 359 } else if (retry->flags & IW_RETRY_SHORT) { 360 wdev->wiphy->retry_short = retry->value; 361 changed |= WIPHY_PARAM_RETRY_SHORT; 362 } else { 363 wdev->wiphy->retry_short = retry->value; 364 wdev->wiphy->retry_long = retry->value; 365 changed |= WIPHY_PARAM_RETRY_LONG; 366 changed |= WIPHY_PARAM_RETRY_SHORT; 367 } 368 369 err = rdev_set_wiphy_params(rdev, changed); 370 if (err) { 371 wdev->wiphy->retry_short = oshort; 372 wdev->wiphy->retry_long = olong; 373 } 374 wiphy_unlock(&rdev->wiphy); 375 376 return err; 377 } 378 379 int cfg80211_wext_giwretry(struct net_device *dev, 380 struct iw_request_info *info, 381 struct iw_param *retry, char *extra) 382 { 383 struct wireless_dev *wdev = dev->ieee80211_ptr; 384 385 retry->disabled = 0; 386 387 if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) { 388 /* 389 * First return short value, iwconfig will ask long value 390 * later if needed 391 */ 392 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT; 393 retry->value = wdev->wiphy->retry_short; 394 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short) 395 retry->flags |= IW_RETRY_LONG; 396 397 return 0; 398 } 399 400 if (retry->flags & IW_RETRY_LONG) { 401 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG; 402 retry->value = wdev->wiphy->retry_long; 403 } 404 405 return 0; 406 } 407 EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry); 408 409 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 410 struct net_device *dev, bool pairwise, 411 const u8 *addr, bool remove, bool tx_key, 412 int idx, struct key_params *params) 413 { 414 struct wireless_dev *wdev = dev->ieee80211_ptr; 415 int err, i; 416 bool rejoin = false; 417 418 if (wdev->valid_links) 419 return -EINVAL; 420 421 if (pairwise && !addr) 422 return -EINVAL; 423 424 /* 425 * In many cases we won't actually need this, but it's better 426 * to do it first in case the allocation fails. Don't use wext. 427 */ 428 if (!wdev->wext.keys) { 429 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys), 430 GFP_KERNEL); 431 if (!wdev->wext.keys) 432 return -ENOMEM; 433 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++) 434 wdev->wext.keys->params[i].key = 435 wdev->wext.keys->data[i]; 436 } 437 438 if (wdev->iftype != NL80211_IFTYPE_ADHOC && 439 wdev->iftype != NL80211_IFTYPE_STATION) 440 return -EOPNOTSUPP; 441 442 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 443 if (!wdev->connected) 444 return -ENOLINK; 445 446 if (!rdev->ops->set_default_mgmt_key) 447 return -EOPNOTSUPP; 448 449 if (idx < 4 || idx > 5) 450 return -EINVAL; 451 } else if (idx < 0 || idx > 3) 452 return -EINVAL; 453 454 if (remove) { 455 err = 0; 456 if (wdev->connected || 457 (wdev->iftype == NL80211_IFTYPE_ADHOC && 458 wdev->u.ibss.current_bss)) { 459 /* 460 * If removing the current TX key, we will need to 461 * join a new IBSS without the privacy bit clear. 462 */ 463 if (idx == wdev->wext.default_key && 464 wdev->iftype == NL80211_IFTYPE_ADHOC) { 465 __cfg80211_leave_ibss(rdev, wdev->netdev, true); 466 rejoin = true; 467 } 468 469 if (!pairwise && addr && 470 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 471 err = -ENOENT; 472 else 473 err = rdev_del_key(rdev, dev, idx, pairwise, 474 addr); 475 } 476 wdev->wext.connect.privacy = false; 477 /* 478 * Applications using wireless extensions expect to be 479 * able to delete keys that don't exist, so allow that. 480 */ 481 if (err == -ENOENT) 482 err = 0; 483 if (!err) { 484 if (!addr && idx < 4) { 485 memset(wdev->wext.keys->data[idx], 0, 486 sizeof(wdev->wext.keys->data[idx])); 487 wdev->wext.keys->params[idx].key_len = 0; 488 wdev->wext.keys->params[idx].cipher = 0; 489 } 490 if (idx == wdev->wext.default_key) 491 wdev->wext.default_key = -1; 492 else if (idx == wdev->wext.default_mgmt_key) 493 wdev->wext.default_mgmt_key = -1; 494 } 495 496 if (!err && rejoin) 497 err = cfg80211_ibss_wext_join(rdev, wdev); 498 499 return err; 500 } 501 502 if (addr) 503 tx_key = false; 504 505 if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr)) 506 return -EINVAL; 507 508 err = 0; 509 if (wdev->connected || 510 (wdev->iftype == NL80211_IFTYPE_ADHOC && 511 wdev->u.ibss.current_bss)) 512 err = rdev_add_key(rdev, dev, idx, pairwise, addr, params); 513 else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 && 514 params->cipher != WLAN_CIPHER_SUITE_WEP104) 515 return -EINVAL; 516 if (err) 517 return err; 518 519 /* 520 * We only need to store WEP keys, since they're the only keys that 521 * can be set before a connection is established and persist after 522 * disconnecting. 523 */ 524 if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 || 525 params->cipher == WLAN_CIPHER_SUITE_WEP104)) { 526 wdev->wext.keys->params[idx] = *params; 527 memcpy(wdev->wext.keys->data[idx], 528 params->key, params->key_len); 529 wdev->wext.keys->params[idx].key = 530 wdev->wext.keys->data[idx]; 531 } 532 533 if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 || 534 params->cipher == WLAN_CIPHER_SUITE_WEP104) && 535 (tx_key || (!addr && wdev->wext.default_key == -1))) { 536 if (wdev->connected || 537 (wdev->iftype == NL80211_IFTYPE_ADHOC && 538 wdev->u.ibss.current_bss)) { 539 /* 540 * If we are getting a new TX key from not having 541 * had one before we need to join a new IBSS with 542 * the privacy bit set. 543 */ 544 if (wdev->iftype == NL80211_IFTYPE_ADHOC && 545 wdev->wext.default_key == -1) { 546 __cfg80211_leave_ibss(rdev, wdev->netdev, true); 547 rejoin = true; 548 } 549 err = rdev_set_default_key(rdev, dev, idx, true, true); 550 } 551 if (!err) { 552 wdev->wext.default_key = idx; 553 if (rejoin) 554 err = cfg80211_ibss_wext_join(rdev, wdev); 555 } 556 return err; 557 } 558 559 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC && 560 (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) { 561 if (wdev->connected || 562 (wdev->iftype == NL80211_IFTYPE_ADHOC && 563 wdev->u.ibss.current_bss)) 564 err = rdev_set_default_mgmt_key(rdev, dev, idx); 565 if (!err) 566 wdev->wext.default_mgmt_key = idx; 567 return err; 568 } 569 570 return 0; 571 } 572 573 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, 574 struct net_device *dev, bool pairwise, 575 const u8 *addr, bool remove, bool tx_key, 576 int idx, struct key_params *params) 577 { 578 int err; 579 580 wdev_lock(dev->ieee80211_ptr); 581 err = __cfg80211_set_encryption(rdev, dev, pairwise, addr, 582 remove, tx_key, idx, params); 583 wdev_unlock(dev->ieee80211_ptr); 584 585 return err; 586 } 587 588 static int cfg80211_wext_siwencode(struct net_device *dev, 589 struct iw_request_info *info, 590 struct iw_point *erq, char *keybuf) 591 { 592 struct wireless_dev *wdev = dev->ieee80211_ptr; 593 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 594 int idx, err; 595 bool remove = false; 596 struct key_params params; 597 598 if (wdev->iftype != NL80211_IFTYPE_STATION && 599 wdev->iftype != NL80211_IFTYPE_ADHOC) 600 return -EOPNOTSUPP; 601 602 /* no use -- only MFP (set_default_mgmt_key) is optional */ 603 if (!rdev->ops->del_key || 604 !rdev->ops->add_key || 605 !rdev->ops->set_default_key) 606 return -EOPNOTSUPP; 607 608 wiphy_lock(&rdev->wiphy); 609 if (wdev->valid_links) { 610 err = -EOPNOTSUPP; 611 goto out; 612 } 613 614 idx = erq->flags & IW_ENCODE_INDEX; 615 if (idx == 0) { 616 idx = wdev->wext.default_key; 617 if (idx < 0) 618 idx = 0; 619 } else if (idx < 1 || idx > 4) { 620 err = -EINVAL; 621 goto out; 622 } else { 623 idx--; 624 } 625 626 if (erq->flags & IW_ENCODE_DISABLED) 627 remove = true; 628 else if (erq->length == 0) { 629 /* No key data - just set the default TX key index */ 630 err = 0; 631 wdev_lock(wdev); 632 if (wdev->connected || 633 (wdev->iftype == NL80211_IFTYPE_ADHOC && 634 wdev->u.ibss.current_bss)) 635 err = rdev_set_default_key(rdev, dev, idx, true, 636 true); 637 if (!err) 638 wdev->wext.default_key = idx; 639 wdev_unlock(wdev); 640 goto out; 641 } 642 643 memset(¶ms, 0, sizeof(params)); 644 params.key = keybuf; 645 params.key_len = erq->length; 646 if (erq->length == 5) { 647 params.cipher = WLAN_CIPHER_SUITE_WEP40; 648 } else if (erq->length == 13) { 649 params.cipher = WLAN_CIPHER_SUITE_WEP104; 650 } else if (!remove) { 651 err = -EINVAL; 652 goto out; 653 } 654 655 err = cfg80211_set_encryption(rdev, dev, false, NULL, remove, 656 wdev->wext.default_key == -1, 657 idx, ¶ms); 658 out: 659 wiphy_unlock(&rdev->wiphy); 660 661 return err; 662 } 663 664 static int cfg80211_wext_siwencodeext(struct net_device *dev, 665 struct iw_request_info *info, 666 struct iw_point *erq, char *extra) 667 { 668 struct wireless_dev *wdev = dev->ieee80211_ptr; 669 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 670 struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; 671 const u8 *addr; 672 int idx; 673 bool remove = false; 674 struct key_params params; 675 u32 cipher; 676 int ret; 677 678 if (wdev->iftype != NL80211_IFTYPE_STATION && 679 wdev->iftype != NL80211_IFTYPE_ADHOC) 680 return -EOPNOTSUPP; 681 682 /* no use -- only MFP (set_default_mgmt_key) is optional */ 683 if (!rdev->ops->del_key || 684 !rdev->ops->add_key || 685 !rdev->ops->set_default_key) 686 return -EOPNOTSUPP; 687 688 switch (ext->alg) { 689 case IW_ENCODE_ALG_NONE: 690 remove = true; 691 cipher = 0; 692 break; 693 case IW_ENCODE_ALG_WEP: 694 if (ext->key_len == 5) 695 cipher = WLAN_CIPHER_SUITE_WEP40; 696 else if (ext->key_len == 13) 697 cipher = WLAN_CIPHER_SUITE_WEP104; 698 else 699 return -EINVAL; 700 break; 701 case IW_ENCODE_ALG_TKIP: 702 cipher = WLAN_CIPHER_SUITE_TKIP; 703 break; 704 case IW_ENCODE_ALG_CCMP: 705 cipher = WLAN_CIPHER_SUITE_CCMP; 706 break; 707 case IW_ENCODE_ALG_AES_CMAC: 708 cipher = WLAN_CIPHER_SUITE_AES_CMAC; 709 break; 710 default: 711 return -EOPNOTSUPP; 712 } 713 714 if (erq->flags & IW_ENCODE_DISABLED) 715 remove = true; 716 717 idx = erq->flags & IW_ENCODE_INDEX; 718 if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 719 if (idx < 4 || idx > 5) { 720 idx = wdev->wext.default_mgmt_key; 721 if (idx < 0) 722 return -EINVAL; 723 } else 724 idx--; 725 } else { 726 if (idx < 1 || idx > 4) { 727 idx = wdev->wext.default_key; 728 if (idx < 0) 729 return -EINVAL; 730 } else 731 idx--; 732 } 733 734 addr = ext->addr.sa_data; 735 if (is_broadcast_ether_addr(addr)) 736 addr = NULL; 737 738 memset(¶ms, 0, sizeof(params)); 739 params.key = ext->key; 740 params.key_len = ext->key_len; 741 params.cipher = cipher; 742 743 if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { 744 params.seq = ext->rx_seq; 745 params.seq_len = 6; 746 } 747 748 wiphy_lock(wdev->wiphy); 749 ret = cfg80211_set_encryption( 750 rdev, dev, 751 !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY), 752 addr, remove, 753 ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, 754 idx, ¶ms); 755 wiphy_unlock(wdev->wiphy); 756 757 return ret; 758 } 759 760 static int cfg80211_wext_giwencode(struct net_device *dev, 761 struct iw_request_info *info, 762 struct iw_point *erq, char *keybuf) 763 { 764 struct wireless_dev *wdev = dev->ieee80211_ptr; 765 int idx; 766 767 if (wdev->iftype != NL80211_IFTYPE_STATION && 768 wdev->iftype != NL80211_IFTYPE_ADHOC) 769 return -EOPNOTSUPP; 770 771 idx = erq->flags & IW_ENCODE_INDEX; 772 if (idx == 0) { 773 idx = wdev->wext.default_key; 774 if (idx < 0) 775 idx = 0; 776 } else if (idx < 1 || idx > 4) 777 return -EINVAL; 778 else 779 idx--; 780 781 erq->flags = idx + 1; 782 783 if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) { 784 erq->flags |= IW_ENCODE_DISABLED; 785 erq->length = 0; 786 return 0; 787 } 788 789 erq->length = min_t(size_t, erq->length, 790 wdev->wext.keys->params[idx].key_len); 791 memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length); 792 erq->flags |= IW_ENCODE_ENABLED; 793 794 return 0; 795 } 796 797 static int cfg80211_wext_siwfreq(struct net_device *dev, 798 struct iw_request_info *info, 799 struct iw_freq *wextfreq, char *extra) 800 { 801 struct wireless_dev *wdev = dev->ieee80211_ptr; 802 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 803 struct cfg80211_chan_def chandef = { 804 .width = NL80211_CHAN_WIDTH_20_NOHT, 805 }; 806 int freq, ret; 807 808 wiphy_lock(&rdev->wiphy); 809 810 switch (wdev->iftype) { 811 case NL80211_IFTYPE_STATION: 812 ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra); 813 break; 814 case NL80211_IFTYPE_ADHOC: 815 ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra); 816 break; 817 case NL80211_IFTYPE_MONITOR: 818 freq = cfg80211_wext_freq(wextfreq); 819 if (freq < 0) { 820 ret = freq; 821 break; 822 } 823 if (freq == 0) { 824 ret = -EINVAL; 825 break; 826 } 827 chandef.center_freq1 = freq; 828 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 829 if (!chandef.chan) { 830 ret = -EINVAL; 831 break; 832 } 833 ret = cfg80211_set_monitor_channel(rdev, &chandef); 834 break; 835 case NL80211_IFTYPE_MESH_POINT: 836 freq = cfg80211_wext_freq(wextfreq); 837 if (freq < 0) { 838 ret = freq; 839 break; 840 } 841 if (freq == 0) { 842 ret = -EINVAL; 843 break; 844 } 845 chandef.center_freq1 = freq; 846 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); 847 if (!chandef.chan) { 848 ret = -EINVAL; 849 break; 850 } 851 ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 852 break; 853 default: 854 ret = -EOPNOTSUPP; 855 break; 856 } 857 858 wiphy_unlock(&rdev->wiphy); 859 860 return ret; 861 } 862 863 static int cfg80211_wext_giwfreq(struct net_device *dev, 864 struct iw_request_info *info, 865 struct iw_freq *freq, char *extra) 866 { 867 struct wireless_dev *wdev = dev->ieee80211_ptr; 868 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 869 struct cfg80211_chan_def chandef = {}; 870 int ret; 871 872 wiphy_lock(&rdev->wiphy); 873 switch (wdev->iftype) { 874 case NL80211_IFTYPE_STATION: 875 ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra); 876 break; 877 case NL80211_IFTYPE_ADHOC: 878 ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); 879 break; 880 case NL80211_IFTYPE_MONITOR: 881 if (!rdev->ops->get_channel) { 882 ret = -EINVAL; 883 break; 884 } 885 886 ret = rdev_get_channel(rdev, wdev, 0, &chandef); 887 if (ret) 888 break; 889 freq->m = chandef.chan->center_freq; 890 freq->e = 6; 891 ret = 0; 892 break; 893 default: 894 ret = -EINVAL; 895 break; 896 } 897 898 wiphy_unlock(&rdev->wiphy); 899 900 return ret; 901 } 902 903 static int cfg80211_wext_siwtxpower(struct net_device *dev, 904 struct iw_request_info *info, 905 union iwreq_data *data, char *extra) 906 { 907 struct wireless_dev *wdev = dev->ieee80211_ptr; 908 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 909 enum nl80211_tx_power_setting type; 910 int dbm = 0; 911 int ret; 912 913 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 914 return -EINVAL; 915 if (data->txpower.flags & IW_TXPOW_RANGE) 916 return -EINVAL; 917 918 if (!rdev->ops->set_tx_power) 919 return -EOPNOTSUPP; 920 921 /* only change when not disabling */ 922 if (!data->txpower.disabled) { 923 rfkill_set_sw_state(rdev->wiphy.rfkill, false); 924 925 if (data->txpower.fixed) { 926 /* 927 * wext doesn't support negative values, see 928 * below where it's for automatic 929 */ 930 if (data->txpower.value < 0) 931 return -EINVAL; 932 dbm = data->txpower.value; 933 type = NL80211_TX_POWER_FIXED; 934 /* TODO: do regulatory check! */ 935 } else { 936 /* 937 * Automatic power level setting, max being the value 938 * passed in from userland. 939 */ 940 if (data->txpower.value < 0) { 941 type = NL80211_TX_POWER_AUTOMATIC; 942 } else { 943 dbm = data->txpower.value; 944 type = NL80211_TX_POWER_LIMITED; 945 } 946 } 947 } else { 948 if (rfkill_set_sw_state(rdev->wiphy.rfkill, true)) 949 schedule_work(&rdev->rfkill_block); 950 return 0; 951 } 952 953 wiphy_lock(&rdev->wiphy); 954 ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm)); 955 wiphy_unlock(&rdev->wiphy); 956 957 return ret; 958 } 959 960 static int cfg80211_wext_giwtxpower(struct net_device *dev, 961 struct iw_request_info *info, 962 union iwreq_data *data, char *extra) 963 { 964 struct wireless_dev *wdev = dev->ieee80211_ptr; 965 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 966 int err, val; 967 968 if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) 969 return -EINVAL; 970 if (data->txpower.flags & IW_TXPOW_RANGE) 971 return -EINVAL; 972 973 if (!rdev->ops->get_tx_power) 974 return -EOPNOTSUPP; 975 976 wiphy_lock(&rdev->wiphy); 977 err = rdev_get_tx_power(rdev, wdev, &val); 978 wiphy_unlock(&rdev->wiphy); 979 if (err) 980 return err; 981 982 /* well... oh well */ 983 data->txpower.fixed = 1; 984 data->txpower.disabled = rfkill_blocked(rdev->wiphy.rfkill); 985 data->txpower.value = val; 986 data->txpower.flags = IW_TXPOW_DBM; 987 988 return 0; 989 } 990 991 static int cfg80211_set_auth_alg(struct wireless_dev *wdev, 992 s32 auth_alg) 993 { 994 int nr_alg = 0; 995 996 if (!auth_alg) 997 return -EINVAL; 998 999 if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM | 1000 IW_AUTH_ALG_SHARED_KEY | 1001 IW_AUTH_ALG_LEAP)) 1002 return -EINVAL; 1003 1004 if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) { 1005 nr_alg++; 1006 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM; 1007 } 1008 1009 if (auth_alg & IW_AUTH_ALG_SHARED_KEY) { 1010 nr_alg++; 1011 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY; 1012 } 1013 1014 if (auth_alg & IW_AUTH_ALG_LEAP) { 1015 nr_alg++; 1016 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP; 1017 } 1018 1019 if (nr_alg > 1) 1020 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 1021 1022 return 0; 1023 } 1024 1025 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions) 1026 { 1027 if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA | 1028 IW_AUTH_WPA_VERSION_WPA2| 1029 IW_AUTH_WPA_VERSION_DISABLED)) 1030 return -EINVAL; 1031 1032 if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) && 1033 (wpa_versions & (IW_AUTH_WPA_VERSION_WPA| 1034 IW_AUTH_WPA_VERSION_WPA2))) 1035 return -EINVAL; 1036 1037 if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) 1038 wdev->wext.connect.crypto.wpa_versions &= 1039 ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2); 1040 1041 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA) 1042 wdev->wext.connect.crypto.wpa_versions |= 1043 NL80211_WPA_VERSION_1; 1044 1045 if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2) 1046 wdev->wext.connect.crypto.wpa_versions |= 1047 NL80211_WPA_VERSION_2; 1048 1049 return 0; 1050 } 1051 1052 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher) 1053 { 1054 if (cipher & IW_AUTH_CIPHER_WEP40) 1055 wdev->wext.connect.crypto.cipher_group = 1056 WLAN_CIPHER_SUITE_WEP40; 1057 else if (cipher & IW_AUTH_CIPHER_WEP104) 1058 wdev->wext.connect.crypto.cipher_group = 1059 WLAN_CIPHER_SUITE_WEP104; 1060 else if (cipher & IW_AUTH_CIPHER_TKIP) 1061 wdev->wext.connect.crypto.cipher_group = 1062 WLAN_CIPHER_SUITE_TKIP; 1063 else if (cipher & IW_AUTH_CIPHER_CCMP) 1064 wdev->wext.connect.crypto.cipher_group = 1065 WLAN_CIPHER_SUITE_CCMP; 1066 else if (cipher & IW_AUTH_CIPHER_AES_CMAC) 1067 wdev->wext.connect.crypto.cipher_group = 1068 WLAN_CIPHER_SUITE_AES_CMAC; 1069 else if (cipher & IW_AUTH_CIPHER_NONE) 1070 wdev->wext.connect.crypto.cipher_group = 0; 1071 else 1072 return -EINVAL; 1073 1074 return 0; 1075 } 1076 1077 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher) 1078 { 1079 int nr_ciphers = 0; 1080 u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise; 1081 1082 if (cipher & IW_AUTH_CIPHER_WEP40) { 1083 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40; 1084 nr_ciphers++; 1085 } 1086 1087 if (cipher & IW_AUTH_CIPHER_WEP104) { 1088 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104; 1089 nr_ciphers++; 1090 } 1091 1092 if (cipher & IW_AUTH_CIPHER_TKIP) { 1093 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP; 1094 nr_ciphers++; 1095 } 1096 1097 if (cipher & IW_AUTH_CIPHER_CCMP) { 1098 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP; 1099 nr_ciphers++; 1100 } 1101 1102 if (cipher & IW_AUTH_CIPHER_AES_CMAC) { 1103 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC; 1104 nr_ciphers++; 1105 } 1106 1107 BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5); 1108 1109 wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers; 1110 1111 return 0; 1112 } 1113 1114 1115 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt) 1116 { 1117 int nr_akm_suites = 0; 1118 1119 if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X | 1120 IW_AUTH_KEY_MGMT_PSK)) 1121 return -EINVAL; 1122 1123 if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) { 1124 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1125 WLAN_AKM_SUITE_8021X; 1126 nr_akm_suites++; 1127 } 1128 1129 if (key_mgt & IW_AUTH_KEY_MGMT_PSK) { 1130 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] = 1131 WLAN_AKM_SUITE_PSK; 1132 nr_akm_suites++; 1133 } 1134 1135 wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites; 1136 1137 return 0; 1138 } 1139 1140 static int cfg80211_wext_siwauth(struct net_device *dev, 1141 struct iw_request_info *info, 1142 struct iw_param *data, char *extra) 1143 { 1144 struct wireless_dev *wdev = dev->ieee80211_ptr; 1145 1146 if (wdev->iftype != NL80211_IFTYPE_STATION) 1147 return -EOPNOTSUPP; 1148 1149 switch (data->flags & IW_AUTH_INDEX) { 1150 case IW_AUTH_PRIVACY_INVOKED: 1151 wdev->wext.connect.privacy = data->value; 1152 return 0; 1153 case IW_AUTH_WPA_VERSION: 1154 return cfg80211_set_wpa_version(wdev, data->value); 1155 case IW_AUTH_CIPHER_GROUP: 1156 return cfg80211_set_cipher_group(wdev, data->value); 1157 case IW_AUTH_KEY_MGMT: 1158 return cfg80211_set_key_mgt(wdev, data->value); 1159 case IW_AUTH_CIPHER_PAIRWISE: 1160 return cfg80211_set_cipher_pairwise(wdev, data->value); 1161 case IW_AUTH_80211_AUTH_ALG: 1162 return cfg80211_set_auth_alg(wdev, data->value); 1163 case IW_AUTH_WPA_ENABLED: 1164 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1165 case IW_AUTH_DROP_UNENCRYPTED: 1166 case IW_AUTH_MFP: 1167 return 0; 1168 default: 1169 return -EOPNOTSUPP; 1170 } 1171 } 1172 1173 static int cfg80211_wext_giwauth(struct net_device *dev, 1174 struct iw_request_info *info, 1175 struct iw_param *data, char *extra) 1176 { 1177 /* XXX: what do we need? */ 1178 1179 return -EOPNOTSUPP; 1180 } 1181 1182 static int cfg80211_wext_siwpower(struct net_device *dev, 1183 struct iw_request_info *info, 1184 struct iw_param *wrq, char *extra) 1185 { 1186 struct wireless_dev *wdev = dev->ieee80211_ptr; 1187 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1188 bool ps; 1189 int timeout = wdev->ps_timeout; 1190 int err; 1191 1192 if (wdev->iftype != NL80211_IFTYPE_STATION) 1193 return -EINVAL; 1194 1195 if (!rdev->ops->set_power_mgmt) 1196 return -EOPNOTSUPP; 1197 1198 if (wrq->disabled) { 1199 ps = false; 1200 } else { 1201 switch (wrq->flags & IW_POWER_MODE) { 1202 case IW_POWER_ON: /* If not specified */ 1203 case IW_POWER_MODE: /* If set all mask */ 1204 case IW_POWER_ALL_R: /* If explicitely state all */ 1205 ps = true; 1206 break; 1207 default: /* Otherwise we ignore */ 1208 return -EINVAL; 1209 } 1210 1211 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT)) 1212 return -EINVAL; 1213 1214 if (wrq->flags & IW_POWER_TIMEOUT) 1215 timeout = wrq->value / 1000; 1216 } 1217 1218 wiphy_lock(&rdev->wiphy); 1219 err = rdev_set_power_mgmt(rdev, dev, ps, timeout); 1220 wiphy_unlock(&rdev->wiphy); 1221 if (err) 1222 return err; 1223 1224 wdev->ps = ps; 1225 wdev->ps_timeout = timeout; 1226 1227 return 0; 1228 1229 } 1230 1231 static int cfg80211_wext_giwpower(struct net_device *dev, 1232 struct iw_request_info *info, 1233 struct iw_param *wrq, char *extra) 1234 { 1235 struct wireless_dev *wdev = dev->ieee80211_ptr; 1236 1237 wrq->disabled = !wdev->ps; 1238 1239 return 0; 1240 } 1241 1242 static int cfg80211_wext_siwrate(struct net_device *dev, 1243 struct iw_request_info *info, 1244 struct iw_param *rate, char *extra) 1245 { 1246 struct wireless_dev *wdev = dev->ieee80211_ptr; 1247 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1248 struct cfg80211_bitrate_mask mask; 1249 u32 fixed, maxrate; 1250 struct ieee80211_supported_band *sband; 1251 int band, ridx, ret; 1252 bool match = false; 1253 1254 if (!rdev->ops->set_bitrate_mask) 1255 return -EOPNOTSUPP; 1256 1257 memset(&mask, 0, sizeof(mask)); 1258 fixed = 0; 1259 maxrate = (u32)-1; 1260 1261 if (rate->value < 0) { 1262 /* nothing */ 1263 } else if (rate->fixed) { 1264 fixed = rate->value / 100000; 1265 } else { 1266 maxrate = rate->value / 100000; 1267 } 1268 1269 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1270 sband = wdev->wiphy->bands[band]; 1271 if (sband == NULL) 1272 continue; 1273 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 1274 struct ieee80211_rate *srate = &sband->bitrates[ridx]; 1275 if (fixed == srate->bitrate) { 1276 mask.control[band].legacy = 1 << ridx; 1277 match = true; 1278 break; 1279 } 1280 if (srate->bitrate <= maxrate) { 1281 mask.control[band].legacy |= 1 << ridx; 1282 match = true; 1283 } 1284 } 1285 } 1286 1287 if (!match) 1288 return -EINVAL; 1289 1290 wiphy_lock(&rdev->wiphy); 1291 if (dev->ieee80211_ptr->valid_links) 1292 ret = -EOPNOTSUPP; 1293 else 1294 ret = rdev_set_bitrate_mask(rdev, dev, 0, NULL, &mask); 1295 wiphy_unlock(&rdev->wiphy); 1296 1297 return ret; 1298 } 1299 1300 static int cfg80211_wext_giwrate(struct net_device *dev, 1301 struct iw_request_info *info, 1302 struct iw_param *rate, char *extra) 1303 { 1304 struct wireless_dev *wdev = dev->ieee80211_ptr; 1305 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1306 struct station_info sinfo = {}; 1307 u8 addr[ETH_ALEN]; 1308 int err; 1309 1310 if (wdev->iftype != NL80211_IFTYPE_STATION) 1311 return -EOPNOTSUPP; 1312 1313 if (!rdev->ops->get_station) 1314 return -EOPNOTSUPP; 1315 1316 err = 0; 1317 wdev_lock(wdev); 1318 if (!wdev->valid_links && wdev->links[0].client.current_bss) 1319 memcpy(addr, wdev->links[0].client.current_bss->pub.bssid, 1320 ETH_ALEN); 1321 else 1322 err = -EOPNOTSUPP; 1323 wdev_unlock(wdev); 1324 if (err) 1325 return err; 1326 1327 wiphy_lock(&rdev->wiphy); 1328 err = rdev_get_station(rdev, dev, addr, &sinfo); 1329 wiphy_unlock(&rdev->wiphy); 1330 if (err) 1331 return err; 1332 1333 if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { 1334 err = -EOPNOTSUPP; 1335 goto free; 1336 } 1337 1338 rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); 1339 1340 free: 1341 cfg80211_sinfo_release_content(&sinfo); 1342 return err; 1343 } 1344 1345 /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ 1346 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) 1347 { 1348 struct wireless_dev *wdev = dev->ieee80211_ptr; 1349 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1350 /* we are under RTNL - globally locked - so can use static structs */ 1351 static struct iw_statistics wstats; 1352 static struct station_info sinfo = {}; 1353 u8 bssid[ETH_ALEN]; 1354 int ret; 1355 1356 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) 1357 return NULL; 1358 1359 if (!rdev->ops->get_station) 1360 return NULL; 1361 1362 /* Grab BSSID of current BSS, if any */ 1363 wdev_lock(wdev); 1364 if (wdev->valid_links || !wdev->links[0].client.current_bss) { 1365 wdev_unlock(wdev); 1366 return NULL; 1367 } 1368 memcpy(bssid, wdev->links[0].client.current_bss->pub.bssid, ETH_ALEN); 1369 wdev_unlock(wdev); 1370 1371 memset(&sinfo, 0, sizeof(sinfo)); 1372 1373 wiphy_lock(&rdev->wiphy); 1374 ret = rdev_get_station(rdev, dev, bssid, &sinfo); 1375 wiphy_unlock(&rdev->wiphy); 1376 1377 if (ret) 1378 return NULL; 1379 1380 memset(&wstats, 0, sizeof(wstats)); 1381 1382 switch (rdev->wiphy.signal_type) { 1383 case CFG80211_SIGNAL_TYPE_MBM: 1384 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1385 int sig = sinfo.signal; 1386 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1387 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1388 wstats.qual.updated |= IW_QUAL_DBM; 1389 wstats.qual.level = sig; 1390 if (sig < -110) 1391 sig = -110; 1392 else if (sig > -40) 1393 sig = -40; 1394 wstats.qual.qual = sig + 110; 1395 break; 1396 } 1397 fallthrough; 1398 case CFG80211_SIGNAL_TYPE_UNSPEC: 1399 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) { 1400 wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 1401 wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 1402 wstats.qual.level = sinfo.signal; 1403 wstats.qual.qual = sinfo.signal; 1404 break; 1405 } 1406 fallthrough; 1407 default: 1408 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID; 1409 wstats.qual.updated |= IW_QUAL_QUAL_INVALID; 1410 } 1411 1412 wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1413 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC)) 1414 wstats.discard.misc = sinfo.rx_dropped_misc; 1415 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED)) 1416 wstats.discard.retries = sinfo.tx_failed; 1417 1418 cfg80211_sinfo_release_content(&sinfo); 1419 1420 return &wstats; 1421 } 1422 1423 static int cfg80211_wext_siwap(struct net_device *dev, 1424 struct iw_request_info *info, 1425 struct sockaddr *ap_addr, char *extra) 1426 { 1427 struct wireless_dev *wdev = dev->ieee80211_ptr; 1428 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1429 int ret; 1430 1431 wiphy_lock(&rdev->wiphy); 1432 switch (wdev->iftype) { 1433 case NL80211_IFTYPE_ADHOC: 1434 ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); 1435 break; 1436 case NL80211_IFTYPE_STATION: 1437 ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra); 1438 break; 1439 default: 1440 ret = -EOPNOTSUPP; 1441 break; 1442 } 1443 wiphy_unlock(&rdev->wiphy); 1444 1445 return ret; 1446 } 1447 1448 static int cfg80211_wext_giwap(struct net_device *dev, 1449 struct iw_request_info *info, 1450 struct sockaddr *ap_addr, char *extra) 1451 { 1452 struct wireless_dev *wdev = dev->ieee80211_ptr; 1453 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1454 int ret; 1455 1456 wiphy_lock(&rdev->wiphy); 1457 switch (wdev->iftype) { 1458 case NL80211_IFTYPE_ADHOC: 1459 ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); 1460 break; 1461 case NL80211_IFTYPE_STATION: 1462 ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra); 1463 break; 1464 default: 1465 ret = -EOPNOTSUPP; 1466 break; 1467 } 1468 wiphy_unlock(&rdev->wiphy); 1469 1470 return ret; 1471 } 1472 1473 static int cfg80211_wext_siwessid(struct net_device *dev, 1474 struct iw_request_info *info, 1475 struct iw_point *data, char *ssid) 1476 { 1477 struct wireless_dev *wdev = dev->ieee80211_ptr; 1478 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1479 int ret; 1480 1481 wiphy_lock(&rdev->wiphy); 1482 switch (wdev->iftype) { 1483 case NL80211_IFTYPE_ADHOC: 1484 ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid); 1485 break; 1486 case NL80211_IFTYPE_STATION: 1487 ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid); 1488 break; 1489 default: 1490 ret = -EOPNOTSUPP; 1491 break; 1492 } 1493 wiphy_unlock(&rdev->wiphy); 1494 1495 return ret; 1496 } 1497 1498 static int cfg80211_wext_giwessid(struct net_device *dev, 1499 struct iw_request_info *info, 1500 struct iw_point *data, char *ssid) 1501 { 1502 struct wireless_dev *wdev = dev->ieee80211_ptr; 1503 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1504 int ret; 1505 1506 data->flags = 0; 1507 data->length = 0; 1508 1509 wiphy_lock(&rdev->wiphy); 1510 switch (wdev->iftype) { 1511 case NL80211_IFTYPE_ADHOC: 1512 ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid); 1513 break; 1514 case NL80211_IFTYPE_STATION: 1515 ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid); 1516 break; 1517 default: 1518 ret = -EOPNOTSUPP; 1519 break; 1520 } 1521 wiphy_unlock(&rdev->wiphy); 1522 1523 return ret; 1524 } 1525 1526 static int cfg80211_wext_siwpmksa(struct net_device *dev, 1527 struct iw_request_info *info, 1528 struct iw_point *data, char *extra) 1529 { 1530 struct wireless_dev *wdev = dev->ieee80211_ptr; 1531 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 1532 struct cfg80211_pmksa cfg_pmksa; 1533 struct iw_pmksa *pmksa = (struct iw_pmksa *)extra; 1534 int ret; 1535 1536 memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa)); 1537 1538 if (wdev->iftype != NL80211_IFTYPE_STATION) 1539 return -EINVAL; 1540 1541 cfg_pmksa.bssid = pmksa->bssid.sa_data; 1542 cfg_pmksa.pmkid = pmksa->pmkid; 1543 1544 wiphy_lock(&rdev->wiphy); 1545 switch (pmksa->cmd) { 1546 case IW_PMKSA_ADD: 1547 if (!rdev->ops->set_pmksa) { 1548 ret = -EOPNOTSUPP; 1549 break; 1550 } 1551 1552 ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa); 1553 break; 1554 case IW_PMKSA_REMOVE: 1555 if (!rdev->ops->del_pmksa) { 1556 ret = -EOPNOTSUPP; 1557 break; 1558 } 1559 1560 ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa); 1561 break; 1562 case IW_PMKSA_FLUSH: 1563 if (!rdev->ops->flush_pmksa) { 1564 ret = -EOPNOTSUPP; 1565 break; 1566 } 1567 1568 ret = rdev_flush_pmksa(rdev, dev); 1569 break; 1570 default: 1571 ret = -EOPNOTSUPP; 1572 break; 1573 } 1574 wiphy_unlock(&rdev->wiphy); 1575 1576 return ret; 1577 } 1578 1579 #define DEFINE_WEXT_COMPAT_STUB(func, type) \ 1580 static int __ ## func(struct net_device *dev, \ 1581 struct iw_request_info *info, \ 1582 union iwreq_data *wrqu, \ 1583 char *extra) \ 1584 { \ 1585 return func(dev, info, (type *)wrqu, extra); \ 1586 } 1587 1588 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwname, char) 1589 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfreq, struct iw_freq) 1590 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfreq, struct iw_freq) 1591 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmode, u32) 1592 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwmode, u32) 1593 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrange, struct iw_point) 1594 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwap, struct sockaddr) 1595 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwap, struct sockaddr) 1596 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmlme, struct iw_point) 1597 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwscan, struct iw_point) 1598 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwessid, struct iw_point) 1599 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwessid, struct iw_point) 1600 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrate, struct iw_param) 1601 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrate, struct iw_param) 1602 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrts, struct iw_param) 1603 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrts, struct iw_param) 1604 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfrag, struct iw_param) 1605 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfrag, struct iw_param) 1606 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwretry, struct iw_param) 1607 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwretry, struct iw_param) 1608 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencode, struct iw_point) 1609 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwencode, struct iw_point) 1610 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwpower, struct iw_param) 1611 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpower, struct iw_param) 1612 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwgenie, struct iw_point) 1613 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwauth, struct iw_param) 1614 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwauth, struct iw_param) 1615 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencodeext, struct iw_point) 1616 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpmksa, struct iw_point) 1617 1618 static const iw_handler cfg80211_handlers[] = { 1619 [IW_IOCTL_IDX(SIOCGIWNAME)] = __cfg80211_wext_giwname, 1620 [IW_IOCTL_IDX(SIOCSIWFREQ)] = __cfg80211_wext_siwfreq, 1621 [IW_IOCTL_IDX(SIOCGIWFREQ)] = __cfg80211_wext_giwfreq, 1622 [IW_IOCTL_IDX(SIOCSIWMODE)] = __cfg80211_wext_siwmode, 1623 [IW_IOCTL_IDX(SIOCGIWMODE)] = __cfg80211_wext_giwmode, 1624 [IW_IOCTL_IDX(SIOCGIWRANGE)] = __cfg80211_wext_giwrange, 1625 [IW_IOCTL_IDX(SIOCSIWAP)] = __cfg80211_wext_siwap, 1626 [IW_IOCTL_IDX(SIOCGIWAP)] = __cfg80211_wext_giwap, 1627 [IW_IOCTL_IDX(SIOCSIWMLME)] = __cfg80211_wext_siwmlme, 1628 [IW_IOCTL_IDX(SIOCSIWSCAN)] = cfg80211_wext_siwscan, 1629 [IW_IOCTL_IDX(SIOCGIWSCAN)] = __cfg80211_wext_giwscan, 1630 [IW_IOCTL_IDX(SIOCSIWESSID)] = __cfg80211_wext_siwessid, 1631 [IW_IOCTL_IDX(SIOCGIWESSID)] = __cfg80211_wext_giwessid, 1632 [IW_IOCTL_IDX(SIOCSIWRATE)] = __cfg80211_wext_siwrate, 1633 [IW_IOCTL_IDX(SIOCGIWRATE)] = __cfg80211_wext_giwrate, 1634 [IW_IOCTL_IDX(SIOCSIWRTS)] = __cfg80211_wext_siwrts, 1635 [IW_IOCTL_IDX(SIOCGIWRTS)] = __cfg80211_wext_giwrts, 1636 [IW_IOCTL_IDX(SIOCSIWFRAG)] = __cfg80211_wext_siwfrag, 1637 [IW_IOCTL_IDX(SIOCGIWFRAG)] = __cfg80211_wext_giwfrag, 1638 [IW_IOCTL_IDX(SIOCSIWTXPOW)] = cfg80211_wext_siwtxpower, 1639 [IW_IOCTL_IDX(SIOCGIWTXPOW)] = cfg80211_wext_giwtxpower, 1640 [IW_IOCTL_IDX(SIOCSIWRETRY)] = __cfg80211_wext_siwretry, 1641 [IW_IOCTL_IDX(SIOCGIWRETRY)] = __cfg80211_wext_giwretry, 1642 [IW_IOCTL_IDX(SIOCSIWENCODE)] = __cfg80211_wext_siwencode, 1643 [IW_IOCTL_IDX(SIOCGIWENCODE)] = __cfg80211_wext_giwencode, 1644 [IW_IOCTL_IDX(SIOCSIWPOWER)] = __cfg80211_wext_siwpower, 1645 [IW_IOCTL_IDX(SIOCGIWPOWER)] = __cfg80211_wext_giwpower, 1646 [IW_IOCTL_IDX(SIOCSIWGENIE)] = __cfg80211_wext_siwgenie, 1647 [IW_IOCTL_IDX(SIOCSIWAUTH)] = __cfg80211_wext_siwauth, 1648 [IW_IOCTL_IDX(SIOCGIWAUTH)] = __cfg80211_wext_giwauth, 1649 [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= __cfg80211_wext_siwencodeext, 1650 [IW_IOCTL_IDX(SIOCSIWPMKSA)] = __cfg80211_wext_siwpmksa, 1651 }; 1652 1653 const struct iw_handler_def cfg80211_wext_handler = { 1654 .num_standard = ARRAY_SIZE(cfg80211_handlers), 1655 .standard = cfg80211_handlers, 1656 .get_wireless_stats = cfg80211_wireless_stats, 1657 }; 1658