1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2018 - 2019 Intel Corporation 4 */ 5 #ifndef __PMSR_H 6 #define __PMSR_H 7 #include <net/cfg80211.h> 8 #include "core.h" 9 #include "nl80211.h" 10 #include "rdev-ops.h" 11 12 static int pmsr_parse_ftm(struct cfg80211_registered_device *rdev, 13 struct nlattr *ftmreq, 14 struct cfg80211_pmsr_request_peer *out, 15 struct genl_info *info) 16 { 17 const struct cfg80211_pmsr_capabilities *capa = rdev->wiphy.pmsr_capa; 18 struct nlattr *tb[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1]; 19 u32 preamble = NL80211_PREAMBLE_DMG; /* only optional in DMG */ 20 21 /* validate existing data */ 22 if (!(rdev->wiphy.pmsr_capa->ftm.bandwidths & BIT(out->chandef.width))) { 23 NL_SET_ERR_MSG(info->extack, "FTM: unsupported bandwidth"); 24 return -EINVAL; 25 } 26 27 /* no validation needed - was already done via nested policy */ 28 nla_parse_nested_deprecated(tb, NL80211_PMSR_FTM_REQ_ATTR_MAX, ftmreq, 29 NULL, NULL); 30 31 if (tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]) 32 preamble = nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]); 33 34 /* set up values - struct is 0-initialized */ 35 out->ftm.requested = true; 36 37 switch (out->chandef.chan->band) { 38 case NL80211_BAND_60GHZ: 39 /* optional */ 40 break; 41 default: 42 if (!tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]) { 43 NL_SET_ERR_MSG(info->extack, 44 "FTM: must specify preamble"); 45 return -EINVAL; 46 } 47 } 48 49 if (!(capa->ftm.preambles & BIT(preamble))) { 50 NL_SET_ERR_MSG_ATTR(info->extack, 51 tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE], 52 "FTM: invalid preamble"); 53 return -EINVAL; 54 } 55 56 out->ftm.preamble = preamble; 57 58 out->ftm.burst_period = 0; 59 if (tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD]) 60 out->ftm.burst_period = 61 nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD]); 62 63 out->ftm.asap = !!tb[NL80211_PMSR_FTM_REQ_ATTR_ASAP]; 64 if (out->ftm.asap && !capa->ftm.asap) { 65 NL_SET_ERR_MSG_ATTR(info->extack, 66 tb[NL80211_PMSR_FTM_REQ_ATTR_ASAP], 67 "FTM: ASAP mode not supported"); 68 return -EINVAL; 69 } 70 71 if (!out->ftm.asap && !capa->ftm.non_asap) { 72 NL_SET_ERR_MSG(info->extack, 73 "FTM: non-ASAP mode not supported"); 74 return -EINVAL; 75 } 76 77 out->ftm.num_bursts_exp = 0; 78 if (tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP]) 79 out->ftm.num_bursts_exp = 80 nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP]); 81 82 if (capa->ftm.max_bursts_exponent >= 0 && 83 out->ftm.num_bursts_exp > capa->ftm.max_bursts_exponent) { 84 NL_SET_ERR_MSG_ATTR(info->extack, 85 tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP], 86 "FTM: max NUM_BURSTS_EXP must be set lower than the device limit"); 87 return -EINVAL; 88 } 89 90 out->ftm.burst_duration = 15; 91 if (tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION]) 92 out->ftm.burst_duration = 93 nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION]); 94 95 out->ftm.ftms_per_burst = 0; 96 if (tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST]) 97 out->ftm.ftms_per_burst = 98 nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST]); 99 100 if (capa->ftm.max_ftms_per_burst && 101 (out->ftm.ftms_per_burst > capa->ftm.max_ftms_per_burst || 102 out->ftm.ftms_per_burst == 0)) { 103 NL_SET_ERR_MSG_ATTR(info->extack, 104 tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST], 105 "FTM: FTMs per burst must be set lower than the device limit but non-zero"); 106 return -EINVAL; 107 } 108 109 out->ftm.ftmr_retries = 3; 110 if (tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES]) 111 out->ftm.ftmr_retries = 112 nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES]); 113 114 out->ftm.request_lci = !!tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI]; 115 if (out->ftm.request_lci && !capa->ftm.request_lci) { 116 NL_SET_ERR_MSG_ATTR(info->extack, 117 tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI], 118 "FTM: LCI request not supported"); 119 } 120 121 out->ftm.request_civicloc = 122 !!tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC]; 123 if (out->ftm.request_civicloc && !capa->ftm.request_civicloc) { 124 NL_SET_ERR_MSG_ATTR(info->extack, 125 tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC], 126 "FTM: civic location request not supported"); 127 } 128 129 out->ftm.trigger_based = 130 !!tb[NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED]; 131 if (out->ftm.trigger_based && !capa->ftm.trigger_based) { 132 NL_SET_ERR_MSG_ATTR(info->extack, 133 tb[NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED], 134 "FTM: trigger based ranging is not supported"); 135 return -EINVAL; 136 } 137 138 out->ftm.non_trigger_based = 139 !!tb[NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED]; 140 if (out->ftm.non_trigger_based && !capa->ftm.non_trigger_based) { 141 NL_SET_ERR_MSG_ATTR(info->extack, 142 tb[NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED], 143 "FTM: trigger based ranging is not supported"); 144 return -EINVAL; 145 } 146 147 if (out->ftm.trigger_based && out->ftm.non_trigger_based) { 148 NL_SET_ERR_MSG(info->extack, 149 "FTM: can't set both trigger based and non trigger based"); 150 return -EINVAL; 151 } 152 153 if ((out->ftm.trigger_based || out->ftm.non_trigger_based) && 154 out->ftm.preamble != NL80211_PREAMBLE_HE) { 155 NL_SET_ERR_MSG_ATTR(info->extack, 156 tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE], 157 "FTM: non EDCA based ranging must use HE preamble"); 158 return -EINVAL; 159 } 160 161 return 0; 162 } 163 164 static int pmsr_parse_peer(struct cfg80211_registered_device *rdev, 165 struct nlattr *peer, 166 struct cfg80211_pmsr_request_peer *out, 167 struct genl_info *info) 168 { 169 struct nlattr *tb[NL80211_PMSR_PEER_ATTR_MAX + 1]; 170 struct nlattr *req[NL80211_PMSR_REQ_ATTR_MAX + 1]; 171 struct nlattr *treq; 172 int err, rem; 173 174 /* no validation needed - was already done via nested policy */ 175 nla_parse_nested_deprecated(tb, NL80211_PMSR_PEER_ATTR_MAX, peer, 176 NULL, NULL); 177 178 if (!tb[NL80211_PMSR_PEER_ATTR_ADDR] || 179 !tb[NL80211_PMSR_PEER_ATTR_CHAN] || 180 !tb[NL80211_PMSR_PEER_ATTR_REQ]) { 181 NL_SET_ERR_MSG_ATTR(info->extack, peer, 182 "insufficient peer data"); 183 return -EINVAL; 184 } 185 186 memcpy(out->addr, nla_data(tb[NL80211_PMSR_PEER_ATTR_ADDR]), ETH_ALEN); 187 188 /* reuse info->attrs */ 189 memset(info->attrs, 0, sizeof(*info->attrs) * (NL80211_ATTR_MAX + 1)); 190 /* need to validate here, we don't want to have validation recursion */ 191 err = nla_parse_nested_deprecated(info->attrs, NL80211_ATTR_MAX, 192 tb[NL80211_PMSR_PEER_ATTR_CHAN], 193 nl80211_policy, info->extack); 194 if (err) 195 return err; 196 197 err = nl80211_parse_chandef(rdev, info, &out->chandef); 198 if (err) 199 return err; 200 201 /* no validation needed - was already done via nested policy */ 202 nla_parse_nested_deprecated(req, NL80211_PMSR_REQ_ATTR_MAX, 203 tb[NL80211_PMSR_PEER_ATTR_REQ], NULL, 204 NULL); 205 206 if (!req[NL80211_PMSR_REQ_ATTR_DATA]) { 207 NL_SET_ERR_MSG_ATTR(info->extack, 208 tb[NL80211_PMSR_PEER_ATTR_REQ], 209 "missing request type/data"); 210 return -EINVAL; 211 } 212 213 if (req[NL80211_PMSR_REQ_ATTR_GET_AP_TSF]) 214 out->report_ap_tsf = true; 215 216 if (out->report_ap_tsf && !rdev->wiphy.pmsr_capa->report_ap_tsf) { 217 NL_SET_ERR_MSG_ATTR(info->extack, 218 req[NL80211_PMSR_REQ_ATTR_GET_AP_TSF], 219 "reporting AP TSF is not supported"); 220 return -EINVAL; 221 } 222 223 nla_for_each_nested(treq, req[NL80211_PMSR_REQ_ATTR_DATA], rem) { 224 switch (nla_type(treq)) { 225 case NL80211_PMSR_TYPE_FTM: 226 err = pmsr_parse_ftm(rdev, treq, out, info); 227 break; 228 default: 229 NL_SET_ERR_MSG_ATTR(info->extack, treq, 230 "unsupported measurement type"); 231 err = -EINVAL; 232 } 233 } 234 235 if (err) 236 return err; 237 238 return 0; 239 } 240 241 int nl80211_pmsr_start(struct sk_buff *skb, struct genl_info *info) 242 { 243 struct nlattr *reqattr = info->attrs[NL80211_ATTR_PEER_MEASUREMENTS]; 244 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 245 struct wireless_dev *wdev = info->user_ptr[1]; 246 struct cfg80211_pmsr_request *req; 247 struct nlattr *peers, *peer; 248 int count, rem, err, idx; 249 250 if (!rdev->wiphy.pmsr_capa) 251 return -EOPNOTSUPP; 252 253 if (!reqattr) 254 return -EINVAL; 255 256 peers = nla_find(nla_data(reqattr), nla_len(reqattr), 257 NL80211_PMSR_ATTR_PEERS); 258 if (!peers) 259 return -EINVAL; 260 261 count = 0; 262 nla_for_each_nested(peer, peers, rem) { 263 count++; 264 265 if (count > rdev->wiphy.pmsr_capa->max_peers) { 266 NL_SET_ERR_MSG_ATTR(info->extack, peer, 267 "Too many peers used"); 268 return -EINVAL; 269 } 270 } 271 272 req = kzalloc(struct_size(req, peers, count), GFP_KERNEL); 273 if (!req) 274 return -ENOMEM; 275 276 if (info->attrs[NL80211_ATTR_TIMEOUT]) 277 req->timeout = nla_get_u32(info->attrs[NL80211_ATTR_TIMEOUT]); 278 279 if (info->attrs[NL80211_ATTR_MAC]) { 280 if (!rdev->wiphy.pmsr_capa->randomize_mac_addr) { 281 NL_SET_ERR_MSG_ATTR(info->extack, 282 info->attrs[NL80211_ATTR_MAC], 283 "device cannot randomize MAC address"); 284 err = -EINVAL; 285 goto out_err; 286 } 287 288 err = nl80211_parse_random_mac(info->attrs, req->mac_addr, 289 req->mac_addr_mask); 290 if (err) 291 goto out_err; 292 } else { 293 memcpy(req->mac_addr, wdev_address(wdev), ETH_ALEN); 294 eth_broadcast_addr(req->mac_addr_mask); 295 } 296 297 idx = 0; 298 nla_for_each_nested(peer, peers, rem) { 299 /* NB: this reuses info->attrs, but we no longer need it */ 300 err = pmsr_parse_peer(rdev, peer, &req->peers[idx], info); 301 if (err) 302 goto out_err; 303 idx++; 304 } 305 306 req->n_peers = count; 307 req->cookie = cfg80211_assign_cookie(rdev); 308 req->nl_portid = info->snd_portid; 309 310 err = rdev_start_pmsr(rdev, wdev, req); 311 if (err) 312 goto out_err; 313 314 list_add_tail(&req->list, &wdev->pmsr_list); 315 316 nl_set_extack_cookie_u64(info->extack, req->cookie); 317 return 0; 318 out_err: 319 kfree(req); 320 return err; 321 } 322 323 void cfg80211_pmsr_complete(struct wireless_dev *wdev, 324 struct cfg80211_pmsr_request *req, 325 gfp_t gfp) 326 { 327 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 328 struct sk_buff *msg; 329 void *hdr; 330 331 trace_cfg80211_pmsr_complete(wdev->wiphy, wdev, req->cookie); 332 333 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 334 if (!msg) 335 goto free_request; 336 337 hdr = nl80211hdr_put(msg, 0, 0, 0, 338 NL80211_CMD_PEER_MEASUREMENT_COMPLETE); 339 if (!hdr) 340 goto free_msg; 341 342 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 343 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 344 NL80211_ATTR_PAD)) 345 goto free_msg; 346 347 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->cookie, 348 NL80211_ATTR_PAD)) 349 goto free_msg; 350 351 genlmsg_end(msg, hdr); 352 genlmsg_unicast(wiphy_net(wdev->wiphy), msg, req->nl_portid); 353 goto free_request; 354 free_msg: 355 nlmsg_free(msg); 356 free_request: 357 spin_lock_bh(&wdev->pmsr_lock); 358 list_del(&req->list); 359 spin_unlock_bh(&wdev->pmsr_lock); 360 kfree(req); 361 } 362 EXPORT_SYMBOL_GPL(cfg80211_pmsr_complete); 363 364 static int nl80211_pmsr_send_ftm_res(struct sk_buff *msg, 365 struct cfg80211_pmsr_result *res) 366 { 367 if (res->status == NL80211_PMSR_STATUS_FAILURE) { 368 if (nla_put_u32(msg, NL80211_PMSR_FTM_RESP_ATTR_FAIL_REASON, 369 res->ftm.failure_reason)) 370 goto error; 371 372 if (res->ftm.failure_reason == 373 NL80211_PMSR_FTM_FAILURE_PEER_BUSY && 374 res->ftm.busy_retry_time && 375 nla_put_u32(msg, NL80211_PMSR_FTM_RESP_ATTR_BUSY_RETRY_TIME, 376 res->ftm.busy_retry_time)) 377 goto error; 378 379 return 0; 380 } 381 382 #define PUT(tp, attr, val) \ 383 do { \ 384 if (nla_put_##tp(msg, \ 385 NL80211_PMSR_FTM_RESP_ATTR_##attr, \ 386 res->ftm.val)) \ 387 goto error; \ 388 } while (0) 389 390 #define PUTOPT(tp, attr, val) \ 391 do { \ 392 if (res->ftm.val##_valid) \ 393 PUT(tp, attr, val); \ 394 } while (0) 395 396 #define PUT_U64(attr, val) \ 397 do { \ 398 if (nla_put_u64_64bit(msg, \ 399 NL80211_PMSR_FTM_RESP_ATTR_##attr,\ 400 res->ftm.val, \ 401 NL80211_PMSR_FTM_RESP_ATTR_PAD)) \ 402 goto error; \ 403 } while (0) 404 405 #define PUTOPT_U64(attr, val) \ 406 do { \ 407 if (res->ftm.val##_valid) \ 408 PUT_U64(attr, val); \ 409 } while (0) 410 411 if (res->ftm.burst_index >= 0) 412 PUT(u32, BURST_INDEX, burst_index); 413 PUTOPT(u32, NUM_FTMR_ATTEMPTS, num_ftmr_attempts); 414 PUTOPT(u32, NUM_FTMR_SUCCESSES, num_ftmr_successes); 415 PUT(u8, NUM_BURSTS_EXP, num_bursts_exp); 416 PUT(u8, BURST_DURATION, burst_duration); 417 PUT(u8, FTMS_PER_BURST, ftms_per_burst); 418 PUTOPT(s32, RSSI_AVG, rssi_avg); 419 PUTOPT(s32, RSSI_SPREAD, rssi_spread); 420 if (res->ftm.tx_rate_valid && 421 !nl80211_put_sta_rate(msg, &res->ftm.tx_rate, 422 NL80211_PMSR_FTM_RESP_ATTR_TX_RATE)) 423 goto error; 424 if (res->ftm.rx_rate_valid && 425 !nl80211_put_sta_rate(msg, &res->ftm.rx_rate, 426 NL80211_PMSR_FTM_RESP_ATTR_RX_RATE)) 427 goto error; 428 PUTOPT_U64(RTT_AVG, rtt_avg); 429 PUTOPT_U64(RTT_VARIANCE, rtt_variance); 430 PUTOPT_U64(RTT_SPREAD, rtt_spread); 431 PUTOPT_U64(DIST_AVG, dist_avg); 432 PUTOPT_U64(DIST_VARIANCE, dist_variance); 433 PUTOPT_U64(DIST_SPREAD, dist_spread); 434 if (res->ftm.lci && res->ftm.lci_len && 435 nla_put(msg, NL80211_PMSR_FTM_RESP_ATTR_LCI, 436 res->ftm.lci_len, res->ftm.lci)) 437 goto error; 438 if (res->ftm.civicloc && res->ftm.civicloc_len && 439 nla_put(msg, NL80211_PMSR_FTM_RESP_ATTR_CIVICLOC, 440 res->ftm.civicloc_len, res->ftm.civicloc)) 441 goto error; 442 #undef PUT 443 #undef PUTOPT 444 #undef PUT_U64 445 #undef PUTOPT_U64 446 447 return 0; 448 error: 449 return -ENOSPC; 450 } 451 452 static int nl80211_pmsr_send_result(struct sk_buff *msg, 453 struct cfg80211_pmsr_result *res) 454 { 455 struct nlattr *pmsr, *peers, *peer, *resp, *data, *typedata; 456 457 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS); 458 if (!pmsr) 459 goto error; 460 461 peers = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_PEERS); 462 if (!peers) 463 goto error; 464 465 peer = nla_nest_start_noflag(msg, 1); 466 if (!peer) 467 goto error; 468 469 if (nla_put(msg, NL80211_PMSR_PEER_ATTR_ADDR, ETH_ALEN, res->addr)) 470 goto error; 471 472 resp = nla_nest_start_noflag(msg, NL80211_PMSR_PEER_ATTR_RESP); 473 if (!resp) 474 goto error; 475 476 if (nla_put_u32(msg, NL80211_PMSR_RESP_ATTR_STATUS, res->status) || 477 nla_put_u64_64bit(msg, NL80211_PMSR_RESP_ATTR_HOST_TIME, 478 res->host_time, NL80211_PMSR_RESP_ATTR_PAD)) 479 goto error; 480 481 if (res->ap_tsf_valid && 482 nla_put_u64_64bit(msg, NL80211_PMSR_RESP_ATTR_AP_TSF, 483 res->ap_tsf, NL80211_PMSR_RESP_ATTR_PAD)) 484 goto error; 485 486 if (res->final && nla_put_flag(msg, NL80211_PMSR_RESP_ATTR_FINAL)) 487 goto error; 488 489 data = nla_nest_start_noflag(msg, NL80211_PMSR_RESP_ATTR_DATA); 490 if (!data) 491 goto error; 492 493 typedata = nla_nest_start_noflag(msg, res->type); 494 if (!typedata) 495 goto error; 496 497 switch (res->type) { 498 case NL80211_PMSR_TYPE_FTM: 499 if (nl80211_pmsr_send_ftm_res(msg, res)) 500 goto error; 501 break; 502 default: 503 WARN_ON(1); 504 } 505 506 nla_nest_end(msg, typedata); 507 nla_nest_end(msg, data); 508 nla_nest_end(msg, resp); 509 nla_nest_end(msg, peer); 510 nla_nest_end(msg, peers); 511 nla_nest_end(msg, pmsr); 512 513 return 0; 514 error: 515 return -ENOSPC; 516 } 517 518 void cfg80211_pmsr_report(struct wireless_dev *wdev, 519 struct cfg80211_pmsr_request *req, 520 struct cfg80211_pmsr_result *result, 521 gfp_t gfp) 522 { 523 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 524 struct sk_buff *msg; 525 void *hdr; 526 int err; 527 528 trace_cfg80211_pmsr_report(wdev->wiphy, wdev, req->cookie, 529 result->addr); 530 531 /* 532 * Currently, only variable items are LCI and civic location, 533 * both of which are reasonably short so we don't need to 534 * worry about them here for the allocation. 535 */ 536 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 537 if (!msg) 538 return; 539 540 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PEER_MEASUREMENT_RESULT); 541 if (!hdr) 542 goto free; 543 544 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 545 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 546 NL80211_ATTR_PAD)) 547 goto free; 548 549 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->cookie, 550 NL80211_ATTR_PAD)) 551 goto free; 552 553 err = nl80211_pmsr_send_result(msg, result); 554 if (err) { 555 pr_err_ratelimited("peer measurement result: message didn't fit!"); 556 goto free; 557 } 558 559 genlmsg_end(msg, hdr); 560 genlmsg_unicast(wiphy_net(wdev->wiphy), msg, req->nl_portid); 561 return; 562 free: 563 nlmsg_free(msg); 564 } 565 EXPORT_SYMBOL_GPL(cfg80211_pmsr_report); 566 567 static void cfg80211_pmsr_process_abort(struct wireless_dev *wdev) 568 { 569 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 570 struct cfg80211_pmsr_request *req, *tmp; 571 LIST_HEAD(free_list); 572 573 lockdep_assert_held(&wdev->mtx); 574 575 spin_lock_bh(&wdev->pmsr_lock); 576 list_for_each_entry_safe(req, tmp, &wdev->pmsr_list, list) { 577 if (req->nl_portid) 578 continue; 579 list_move_tail(&req->list, &free_list); 580 } 581 spin_unlock_bh(&wdev->pmsr_lock); 582 583 list_for_each_entry_safe(req, tmp, &free_list, list) { 584 rdev_abort_pmsr(rdev, wdev, req); 585 586 kfree(req); 587 } 588 } 589 590 void cfg80211_pmsr_free_wk(struct work_struct *work) 591 { 592 struct wireless_dev *wdev = container_of(work, struct wireless_dev, 593 pmsr_free_wk); 594 595 wdev_lock(wdev); 596 cfg80211_pmsr_process_abort(wdev); 597 wdev_unlock(wdev); 598 } 599 600 void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev) 601 { 602 struct cfg80211_pmsr_request *req; 603 bool found = false; 604 605 spin_lock_bh(&wdev->pmsr_lock); 606 list_for_each_entry(req, &wdev->pmsr_list, list) { 607 found = true; 608 req->nl_portid = 0; 609 } 610 spin_unlock_bh(&wdev->pmsr_lock); 611 612 if (found) 613 cfg80211_pmsr_process_abort(wdev); 614 615 WARN_ON(!list_empty(&wdev->pmsr_list)); 616 } 617 618 void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid) 619 { 620 struct cfg80211_pmsr_request *req; 621 622 spin_lock_bh(&wdev->pmsr_lock); 623 list_for_each_entry(req, &wdev->pmsr_list, list) { 624 if (req->nl_portid == portid) { 625 req->nl_portid = 0; 626 schedule_work(&wdev->pmsr_free_wk); 627 } 628 } 629 spin_unlock_bh(&wdev->pmsr_lock); 630 } 631 632 #endif /* __PMSR_H */ 633