1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2015-2017 Intel Deutschland GmbH 4 * Copyright (C) 2018-2020 Intel Corporation 5 */ 6 #include <linux/etherdevice.h> 7 #include <linux/math64.h> 8 #include <net/cfg80211.h> 9 #include "mvm.h" 10 #include "iwl-io.h" 11 #include "iwl-prph.h" 12 #include "constants.h" 13 14 struct iwl_mvm_loc_entry { 15 struct list_head list; 16 u8 addr[ETH_ALEN]; 17 u8 lci_len, civic_len; 18 u8 buf[]; 19 }; 20 21 struct iwl_mvm_smooth_entry { 22 struct list_head list; 23 u8 addr[ETH_ALEN]; 24 s64 rtt_avg; 25 u64 host_time; 26 }; 27 28 struct iwl_mvm_ftm_pasn_entry { 29 struct list_head list; 30 u8 addr[ETH_ALEN]; 31 u8 hltk[HLTK_11AZ_LEN]; 32 u8 tk[TK_11AZ_LEN]; 33 u8 cipher; 34 u8 tx_pn[IEEE80211_CCMP_PN_LEN]; 35 u8 rx_pn[IEEE80211_CCMP_PN_LEN]; 36 }; 37 38 int iwl_mvm_ftm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 39 u8 *addr, u32 cipher, u8 *tk, u32 tk_len, 40 u8 *hltk, u32 hltk_len) 41 { 42 struct iwl_mvm_ftm_pasn_entry *pasn = kzalloc(sizeof(*pasn), 43 GFP_KERNEL); 44 u32 expected_tk_len; 45 46 lockdep_assert_held(&mvm->mutex); 47 48 if (!pasn) 49 return -ENOBUFS; 50 51 pasn->cipher = iwl_mvm_cipher_to_location_cipher(cipher); 52 53 switch (pasn->cipher) { 54 case IWL_LOCATION_CIPHER_CCMP_128: 55 case IWL_LOCATION_CIPHER_GCMP_128: 56 expected_tk_len = WLAN_KEY_LEN_CCMP; 57 break; 58 case IWL_LOCATION_CIPHER_GCMP_256: 59 expected_tk_len = WLAN_KEY_LEN_GCMP_256; 60 break; 61 default: 62 goto out; 63 } 64 65 /* 66 * If associated to this AP and already have security context, 67 * the TK is already configured for this station, so it 68 * shouldn't be set again here. 69 */ 70 if (vif->bss_conf.assoc && 71 !memcmp(addr, vif->bss_conf.bssid, ETH_ALEN)) { 72 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 73 struct ieee80211_sta *sta; 74 75 rcu_read_lock(); 76 sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); 77 if (!IS_ERR_OR_NULL(sta) && sta->mfp) 78 expected_tk_len = 0; 79 rcu_read_unlock(); 80 } 81 82 if (tk_len != expected_tk_len || hltk_len != sizeof(pasn->hltk)) { 83 IWL_ERR(mvm, "Invalid key length: tk_len=%u hltk_len=%u\n", 84 tk_len, hltk_len); 85 goto out; 86 } 87 88 memcpy(pasn->addr, addr, sizeof(pasn->addr)); 89 memcpy(pasn->hltk, hltk, sizeof(pasn->hltk)); 90 91 if (tk && tk_len) 92 memcpy(pasn->tk, tk, sizeof(pasn->tk)); 93 94 list_add_tail(&pasn->list, &mvm->ftm_initiator.pasn_list); 95 return 0; 96 out: 97 kfree(pasn); 98 return -EINVAL; 99 } 100 101 void iwl_mvm_ftm_remove_pasn_sta(struct iwl_mvm *mvm, u8 *addr) 102 { 103 struct iwl_mvm_ftm_pasn_entry *entry, *prev; 104 105 lockdep_assert_held(&mvm->mutex); 106 107 list_for_each_entry_safe(entry, prev, &mvm->ftm_initiator.pasn_list, 108 list) { 109 if (memcmp(entry->addr, addr, sizeof(entry->addr))) 110 continue; 111 112 list_del(&entry->list); 113 kfree(entry); 114 return; 115 } 116 } 117 118 static void iwl_mvm_ftm_reset(struct iwl_mvm *mvm) 119 { 120 struct iwl_mvm_loc_entry *e, *t; 121 122 mvm->ftm_initiator.req = NULL; 123 mvm->ftm_initiator.req_wdev = NULL; 124 memset(mvm->ftm_initiator.responses, 0, 125 sizeof(mvm->ftm_initiator.responses)); 126 127 list_for_each_entry_safe(e, t, &mvm->ftm_initiator.loc_list, list) { 128 list_del(&e->list); 129 kfree(e); 130 } 131 } 132 133 void iwl_mvm_ftm_restart(struct iwl_mvm *mvm) 134 { 135 struct cfg80211_pmsr_result result = { 136 .status = NL80211_PMSR_STATUS_FAILURE, 137 .final = 1, 138 .host_time = ktime_get_boottime_ns(), 139 .type = NL80211_PMSR_TYPE_FTM, 140 }; 141 int i; 142 143 lockdep_assert_held(&mvm->mutex); 144 145 if (!mvm->ftm_initiator.req) 146 return; 147 148 for (i = 0; i < mvm->ftm_initiator.req->n_peers; i++) { 149 memcpy(result.addr, mvm->ftm_initiator.req->peers[i].addr, 150 ETH_ALEN); 151 result.ftm.burst_index = mvm->ftm_initiator.responses[i]; 152 153 cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev, 154 mvm->ftm_initiator.req, 155 &result, GFP_KERNEL); 156 } 157 158 cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev, 159 mvm->ftm_initiator.req, GFP_KERNEL); 160 iwl_mvm_ftm_reset(mvm); 161 } 162 163 void iwl_mvm_ftm_initiator_smooth_config(struct iwl_mvm *mvm) 164 { 165 INIT_LIST_HEAD(&mvm->ftm_initiator.smooth.resp); 166 167 IWL_DEBUG_INFO(mvm, 168 "enable=%u, alpha=%u, age_jiffies=%u, thresh=(%u:%u)\n", 169 IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH, 170 IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA, 171 IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * HZ, 172 IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT, 173 IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT); 174 } 175 176 void iwl_mvm_ftm_initiator_smooth_stop(struct iwl_mvm *mvm) 177 { 178 struct iwl_mvm_smooth_entry *se, *st; 179 180 list_for_each_entry_safe(se, st, &mvm->ftm_initiator.smooth.resp, 181 list) { 182 list_del(&se->list); 183 kfree(se); 184 } 185 } 186 187 static int 188 iwl_ftm_range_request_status_to_err(enum iwl_tof_range_request_status s) 189 { 190 switch (s) { 191 case IWL_TOF_RANGE_REQUEST_STATUS_SUCCESS: 192 return 0; 193 case IWL_TOF_RANGE_REQUEST_STATUS_BUSY: 194 return -EBUSY; 195 default: 196 WARN_ON_ONCE(1); 197 return -EIO; 198 } 199 } 200 201 static void iwl_mvm_ftm_cmd_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 202 struct iwl_tof_range_req_cmd_v5 *cmd, 203 struct cfg80211_pmsr_request *req) 204 { 205 int i; 206 207 cmd->request_id = req->cookie; 208 cmd->num_of_ap = req->n_peers; 209 210 /* use maximum for "no timeout" or bigger than what we can do */ 211 if (!req->timeout || req->timeout > 255 * 100) 212 cmd->req_timeout = 255; 213 else 214 cmd->req_timeout = DIV_ROUND_UP(req->timeout, 100); 215 216 /* 217 * We treat it always as random, since if not we'll 218 * have filled our local address there instead. 219 */ 220 cmd->macaddr_random = 1; 221 memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN); 222 for (i = 0; i < ETH_ALEN; i++) 223 cmd->macaddr_mask[i] = ~req->mac_addr_mask[i]; 224 225 if (vif->bss_conf.assoc) 226 memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN); 227 else 228 eth_broadcast_addr(cmd->range_req_bssid); 229 } 230 231 static void iwl_mvm_ftm_cmd_common(struct iwl_mvm *mvm, 232 struct ieee80211_vif *vif, 233 struct iwl_tof_range_req_cmd_v9 *cmd, 234 struct cfg80211_pmsr_request *req) 235 { 236 int i; 237 238 cmd->initiator_flags = 239 cpu_to_le32(IWL_TOF_INITIATOR_FLAGS_MACADDR_RANDOM | 240 IWL_TOF_INITIATOR_FLAGS_NON_ASAP_SUPPORT); 241 cmd->request_id = req->cookie; 242 cmd->num_of_ap = req->n_peers; 243 244 /* 245 * Use a large value for "no timeout". Don't use the maximum value 246 * because of fw limitations. 247 */ 248 if (req->timeout) 249 cmd->req_timeout_ms = cpu_to_le32(req->timeout); 250 else 251 cmd->req_timeout_ms = cpu_to_le32(0xfffff); 252 253 memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN); 254 for (i = 0; i < ETH_ALEN; i++) 255 cmd->macaddr_mask[i] = ~req->mac_addr_mask[i]; 256 257 if (vif->bss_conf.assoc) { 258 memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN); 259 260 /* AP's TSF is only relevant if associated */ 261 for (i = 0; i < req->n_peers; i++) { 262 if (req->peers[i].report_ap_tsf) { 263 struct iwl_mvm_vif *mvmvif = 264 iwl_mvm_vif_from_mac80211(vif); 265 266 cmd->tsf_mac_id = cpu_to_le32(mvmvif->id); 267 return; 268 } 269 } 270 } else { 271 eth_broadcast_addr(cmd->range_req_bssid); 272 } 273 274 /* Don't report AP's TSF */ 275 cmd->tsf_mac_id = cpu_to_le32(0xff); 276 } 277 278 static void iwl_mvm_ftm_cmd_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 279 struct iwl_tof_range_req_cmd_v8 *cmd, 280 struct cfg80211_pmsr_request *req) 281 { 282 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)cmd, req); 283 } 284 285 static int 286 iwl_mvm_ftm_target_chandef_v1(struct iwl_mvm *mvm, 287 struct cfg80211_pmsr_request_peer *peer, 288 u8 *channel, u8 *bandwidth, 289 u8 *ctrl_ch_position) 290 { 291 u32 freq = peer->chandef.chan->center_freq; 292 293 *channel = ieee80211_frequency_to_channel(freq); 294 295 switch (peer->chandef.width) { 296 case NL80211_CHAN_WIDTH_20_NOHT: 297 *bandwidth = IWL_TOF_BW_20_LEGACY; 298 break; 299 case NL80211_CHAN_WIDTH_20: 300 *bandwidth = IWL_TOF_BW_20_HT; 301 break; 302 case NL80211_CHAN_WIDTH_40: 303 *bandwidth = IWL_TOF_BW_40; 304 break; 305 case NL80211_CHAN_WIDTH_80: 306 *bandwidth = IWL_TOF_BW_80; 307 break; 308 default: 309 IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n", 310 peer->chandef.width); 311 return -EINVAL; 312 } 313 314 *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ? 315 iwl_mvm_get_ctrl_pos(&peer->chandef) : 0; 316 317 return 0; 318 } 319 320 static int 321 iwl_mvm_ftm_target_chandef_v2(struct iwl_mvm *mvm, 322 struct cfg80211_pmsr_request_peer *peer, 323 u8 *channel, u8 *format_bw, 324 u8 *ctrl_ch_position) 325 { 326 u32 freq = peer->chandef.chan->center_freq; 327 328 *channel = ieee80211_frequency_to_channel(freq); 329 330 switch (peer->chandef.width) { 331 case NL80211_CHAN_WIDTH_20_NOHT: 332 *format_bw = IWL_LOCATION_FRAME_FORMAT_LEGACY; 333 *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS; 334 break; 335 case NL80211_CHAN_WIDTH_20: 336 *format_bw = IWL_LOCATION_FRAME_FORMAT_HT; 337 *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS; 338 break; 339 case NL80211_CHAN_WIDTH_40: 340 *format_bw = IWL_LOCATION_FRAME_FORMAT_HT; 341 *format_bw |= IWL_LOCATION_BW_40MHZ << LOCATION_BW_POS; 342 break; 343 case NL80211_CHAN_WIDTH_80: 344 *format_bw = IWL_LOCATION_FRAME_FORMAT_VHT; 345 *format_bw |= IWL_LOCATION_BW_80MHZ << LOCATION_BW_POS; 346 break; 347 default: 348 IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n", 349 peer->chandef.width); 350 return -EINVAL; 351 } 352 353 /* non EDCA based measurement must use HE preamble */ 354 if (peer->ftm.trigger_based || peer->ftm.non_trigger_based) 355 *format_bw |= IWL_LOCATION_FRAME_FORMAT_HE; 356 357 *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ? 358 iwl_mvm_get_ctrl_pos(&peer->chandef) : 0; 359 360 return 0; 361 } 362 363 static int 364 iwl_mvm_ftm_put_target_v2(struct iwl_mvm *mvm, 365 struct cfg80211_pmsr_request_peer *peer, 366 struct iwl_tof_range_req_ap_entry_v2 *target) 367 { 368 int ret; 369 370 ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num, 371 &target->bandwidth, 372 &target->ctrl_ch_position); 373 if (ret) 374 return ret; 375 376 memcpy(target->bssid, peer->addr, ETH_ALEN); 377 target->burst_period = 378 cpu_to_le16(peer->ftm.burst_period); 379 target->samples_per_burst = peer->ftm.ftms_per_burst; 380 target->num_of_bursts = peer->ftm.num_bursts_exp; 381 target->measure_type = 0; /* regular two-sided FTM */ 382 target->retries_per_sample = peer->ftm.ftmr_retries; 383 target->asap_mode = peer->ftm.asap; 384 target->enable_dyn_ack = IWL_MVM_FTM_INITIATOR_DYNACK; 385 386 if (peer->ftm.request_lci) 387 target->location_req |= IWL_TOF_LOC_LCI; 388 if (peer->ftm.request_civicloc) 389 target->location_req |= IWL_TOF_LOC_CIVIC; 390 391 target->algo_type = IWL_MVM_FTM_INITIATOR_ALGO; 392 393 return 0; 394 } 395 396 #define FTM_PUT_FLAG(flag) (target->initiator_ap_flags |= \ 397 cpu_to_le32(IWL_INITIATOR_AP_FLAGS_##flag)) 398 399 static void 400 iwl_mvm_ftm_put_target_common(struct iwl_mvm *mvm, 401 struct cfg80211_pmsr_request_peer *peer, 402 struct iwl_tof_range_req_ap_entry_v6 *target) 403 { 404 memcpy(target->bssid, peer->addr, ETH_ALEN); 405 target->burst_period = 406 cpu_to_le16(peer->ftm.burst_period); 407 target->samples_per_burst = peer->ftm.ftms_per_burst; 408 target->num_of_bursts = peer->ftm.num_bursts_exp; 409 target->ftmr_max_retries = peer->ftm.ftmr_retries; 410 target->initiator_ap_flags = cpu_to_le32(0); 411 412 if (peer->ftm.asap) 413 FTM_PUT_FLAG(ASAP); 414 415 if (peer->ftm.request_lci) 416 FTM_PUT_FLAG(LCI_REQUEST); 417 418 if (peer->ftm.request_civicloc) 419 FTM_PUT_FLAG(CIVIC_REQUEST); 420 421 if (IWL_MVM_FTM_INITIATOR_DYNACK) 422 FTM_PUT_FLAG(DYN_ACK); 423 424 if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_LINEAR_REG) 425 FTM_PUT_FLAG(ALGO_LR); 426 else if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_FFT) 427 FTM_PUT_FLAG(ALGO_FFT); 428 429 if (peer->ftm.trigger_based) 430 FTM_PUT_FLAG(TB); 431 else if (peer->ftm.non_trigger_based) 432 FTM_PUT_FLAG(NON_TB); 433 } 434 435 static int 436 iwl_mvm_ftm_put_target_v3(struct iwl_mvm *mvm, 437 struct cfg80211_pmsr_request_peer *peer, 438 struct iwl_tof_range_req_ap_entry_v3 *target) 439 { 440 int ret; 441 442 ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num, 443 &target->bandwidth, 444 &target->ctrl_ch_position); 445 if (ret) 446 return ret; 447 448 /* 449 * Versions 3 and 4 has some common fields, so 450 * iwl_mvm_ftm_put_target_common() can be used for version 7 too. 451 */ 452 iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target); 453 454 return 0; 455 } 456 457 static int 458 iwl_mvm_ftm_put_target_v4(struct iwl_mvm *mvm, 459 struct cfg80211_pmsr_request_peer *peer, 460 struct iwl_tof_range_req_ap_entry_v4 *target) 461 { 462 int ret; 463 464 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num, 465 &target->format_bw, 466 &target->ctrl_ch_position); 467 if (ret) 468 return ret; 469 470 iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target); 471 472 return 0; 473 } 474 475 static int 476 iwl_mvm_ftm_put_target(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 477 struct cfg80211_pmsr_request_peer *peer, 478 struct iwl_tof_range_req_ap_entry_v6 *target) 479 { 480 int ret; 481 482 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num, 483 &target->format_bw, 484 &target->ctrl_ch_position); 485 if (ret) 486 return ret; 487 488 iwl_mvm_ftm_put_target_common(mvm, peer, target); 489 490 if (vif->bss_conf.assoc && 491 !memcmp(peer->addr, vif->bss_conf.bssid, ETH_ALEN)) { 492 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 493 494 target->sta_id = mvmvif->ap_sta_id; 495 } else { 496 target->sta_id = IWL_MVM_INVALID_STA; 497 } 498 499 /* 500 * TODO: Beacon interval is currently unknown, so use the common value 501 * of 100 TUs. 502 */ 503 target->beacon_interval = cpu_to_le16(100); 504 return 0; 505 } 506 507 static int iwl_mvm_ftm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *hcmd) 508 { 509 u32 status; 510 int err = iwl_mvm_send_cmd_status(mvm, hcmd, &status); 511 512 if (!err && status) { 513 IWL_ERR(mvm, "FTM range request command failure, status: %u\n", 514 status); 515 err = iwl_ftm_range_request_status_to_err(status); 516 } 517 518 return err; 519 } 520 521 static int iwl_mvm_ftm_start_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 522 struct cfg80211_pmsr_request *req) 523 { 524 struct iwl_tof_range_req_cmd_v5 cmd_v5; 525 struct iwl_host_cmd hcmd = { 526 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 527 .dataflags[0] = IWL_HCMD_DFL_DUP, 528 .data[0] = &cmd_v5, 529 .len[0] = sizeof(cmd_v5), 530 }; 531 u8 i; 532 int err; 533 534 iwl_mvm_ftm_cmd_v5(mvm, vif, &cmd_v5, req); 535 536 for (i = 0; i < cmd_v5.num_of_ap; i++) { 537 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 538 539 err = iwl_mvm_ftm_put_target_v2(mvm, peer, &cmd_v5.ap[i]); 540 if (err) 541 return err; 542 } 543 544 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 545 } 546 547 static int iwl_mvm_ftm_start_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 548 struct cfg80211_pmsr_request *req) 549 { 550 struct iwl_tof_range_req_cmd_v7 cmd_v7; 551 struct iwl_host_cmd hcmd = { 552 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 553 .dataflags[0] = IWL_HCMD_DFL_DUP, 554 .data[0] = &cmd_v7, 555 .len[0] = sizeof(cmd_v7), 556 }; 557 u8 i; 558 int err; 559 560 /* 561 * Versions 7 and 8 has the same structure except from the responders 562 * list, so iwl_mvm_ftm_cmd() can be used for version 7 too. 563 */ 564 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd_v7, req); 565 566 for (i = 0; i < cmd_v7.num_of_ap; i++) { 567 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 568 569 err = iwl_mvm_ftm_put_target_v3(mvm, peer, &cmd_v7.ap[i]); 570 if (err) 571 return err; 572 } 573 574 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 575 } 576 577 static int iwl_mvm_ftm_start_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 578 struct cfg80211_pmsr_request *req) 579 { 580 struct iwl_tof_range_req_cmd_v8 cmd; 581 struct iwl_host_cmd hcmd = { 582 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 583 .dataflags[0] = IWL_HCMD_DFL_DUP, 584 .data[0] = &cmd, 585 .len[0] = sizeof(cmd), 586 }; 587 u8 i; 588 int err; 589 590 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd, req); 591 592 for (i = 0; i < cmd.num_of_ap; i++) { 593 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 594 595 err = iwl_mvm_ftm_put_target_v4(mvm, peer, &cmd.ap[i]); 596 if (err) 597 return err; 598 } 599 600 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 601 } 602 603 static int iwl_mvm_ftm_start_v9(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 604 struct cfg80211_pmsr_request *req) 605 { 606 struct iwl_tof_range_req_cmd_v9 cmd; 607 struct iwl_host_cmd hcmd = { 608 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 609 .dataflags[0] = IWL_HCMD_DFL_DUP, 610 .data[0] = &cmd, 611 .len[0] = sizeof(cmd), 612 }; 613 u8 i; 614 int err; 615 616 iwl_mvm_ftm_cmd_common(mvm, vif, &cmd, req); 617 618 for (i = 0; i < cmd.num_of_ap; i++) { 619 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 620 struct iwl_tof_range_req_ap_entry_v6 *target = &cmd.ap[i]; 621 622 err = iwl_mvm_ftm_put_target(mvm, vif, peer, target); 623 if (err) 624 return err; 625 } 626 627 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 628 } 629 630 static void iter(struct ieee80211_hw *hw, 631 struct ieee80211_vif *vif, 632 struct ieee80211_sta *sta, 633 struct ieee80211_key_conf *key, 634 void *data) 635 { 636 struct iwl_tof_range_req_ap_entry_v6 *target = data; 637 638 if (!sta || memcmp(sta->addr, target->bssid, ETH_ALEN)) 639 return; 640 641 WARN_ON(!sta->mfp); 642 643 if (WARN_ON(key->keylen > sizeof(target->tk))) 644 return; 645 646 memcpy(target->tk, key->key, key->keylen); 647 target->cipher = iwl_mvm_cipher_to_location_cipher(key->cipher); 648 WARN_ON(target->cipher == IWL_LOCATION_CIPHER_INVALID); 649 } 650 651 static void 652 iwl_mvm_ftm_set_secured_ranging(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 653 struct iwl_tof_range_req_ap_entry_v7 *target) 654 { 655 struct iwl_mvm_ftm_pasn_entry *entry; 656 u32 flags = le32_to_cpu(target->initiator_ap_flags); 657 658 if (!(flags & (IWL_INITIATOR_AP_FLAGS_NON_TB | 659 IWL_INITIATOR_AP_FLAGS_TB))) 660 return; 661 662 lockdep_assert_held(&mvm->mutex); 663 664 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) { 665 if (memcmp(entry->addr, target->bssid, sizeof(entry->addr))) 666 continue; 667 668 target->cipher = entry->cipher; 669 memcpy(target->hltk, entry->hltk, sizeof(target->hltk)); 670 671 if (vif->bss_conf.assoc && 672 !memcmp(vif->bss_conf.bssid, target->bssid, 673 sizeof(target->bssid))) 674 ieee80211_iter_keys(mvm->hw, vif, iter, target); 675 else 676 memcpy(target->tk, entry->tk, sizeof(target->tk)); 677 678 memcpy(target->rx_pn, entry->rx_pn, sizeof(target->rx_pn)); 679 memcpy(target->tx_pn, entry->tx_pn, sizeof(target->tx_pn)); 680 681 target->initiator_ap_flags |= 682 cpu_to_le32(IWL_INITIATOR_AP_FLAGS_SECURED); 683 return; 684 } 685 } 686 687 static int iwl_mvm_ftm_start_v11(struct iwl_mvm *mvm, 688 struct ieee80211_vif *vif, 689 struct cfg80211_pmsr_request *req) 690 { 691 struct iwl_tof_range_req_cmd_v11 cmd; 692 struct iwl_host_cmd hcmd = { 693 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 694 .dataflags[0] = IWL_HCMD_DFL_DUP, 695 .data[0] = &cmd, 696 .len[0] = sizeof(cmd), 697 }; 698 u8 i; 699 int err; 700 701 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); 702 703 for (i = 0; i < cmd.num_of_ap; i++) { 704 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 705 struct iwl_tof_range_req_ap_entry_v7 *target = &cmd.ap[i]; 706 707 err = iwl_mvm_ftm_put_target(mvm, vif, peer, (void *)target); 708 if (err) 709 return err; 710 711 iwl_mvm_ftm_set_secured_ranging(mvm, vif, target); 712 } 713 714 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 715 } 716 717 int iwl_mvm_ftm_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 718 struct cfg80211_pmsr_request *req) 719 { 720 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 721 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ); 722 int err; 723 724 lockdep_assert_held(&mvm->mutex); 725 726 if (mvm->ftm_initiator.req) 727 return -EBUSY; 728 729 if (new_api) { 730 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LOCATION_GROUP, 731 TOF_RANGE_REQ_CMD, 732 IWL_FW_CMD_VER_UNKNOWN); 733 734 switch (cmd_ver) { 735 case 11: 736 err = iwl_mvm_ftm_start_v11(mvm, vif, req); 737 break; 738 case 9: 739 case 10: 740 err = iwl_mvm_ftm_start_v9(mvm, vif, req); 741 break; 742 case 8: 743 err = iwl_mvm_ftm_start_v8(mvm, vif, req); 744 break; 745 default: 746 err = iwl_mvm_ftm_start_v7(mvm, vif, req); 747 break; 748 } 749 } else { 750 err = iwl_mvm_ftm_start_v5(mvm, vif, req); 751 } 752 753 if (!err) { 754 mvm->ftm_initiator.req = req; 755 mvm->ftm_initiator.req_wdev = ieee80211_vif_to_wdev(vif); 756 } 757 758 return err; 759 } 760 761 void iwl_mvm_ftm_abort(struct iwl_mvm *mvm, struct cfg80211_pmsr_request *req) 762 { 763 struct iwl_tof_range_abort_cmd cmd = { 764 .request_id = req->cookie, 765 }; 766 767 lockdep_assert_held(&mvm->mutex); 768 769 if (req != mvm->ftm_initiator.req) 770 return; 771 772 iwl_mvm_ftm_reset(mvm); 773 774 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_RANGE_ABORT_CMD, 775 LOCATION_GROUP, 0), 776 0, sizeof(cmd), &cmd)) 777 IWL_ERR(mvm, "failed to abort FTM process\n"); 778 } 779 780 static int iwl_mvm_ftm_find_peer(struct cfg80211_pmsr_request *req, 781 const u8 *addr) 782 { 783 int i; 784 785 for (i = 0; i < req->n_peers; i++) { 786 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 787 788 if (ether_addr_equal_unaligned(peer->addr, addr)) 789 return i; 790 } 791 792 return -ENOENT; 793 } 794 795 static u64 iwl_mvm_ftm_get_host_time(struct iwl_mvm *mvm, __le32 fw_gp2_ts) 796 { 797 u32 gp2_ts = le32_to_cpu(fw_gp2_ts); 798 u32 curr_gp2, diff; 799 u64 now_from_boot_ns; 800 801 iwl_mvm_get_sync_time(mvm, &curr_gp2, &now_from_boot_ns); 802 803 if (curr_gp2 >= gp2_ts) 804 diff = curr_gp2 - gp2_ts; 805 else 806 diff = curr_gp2 + (U32_MAX - gp2_ts + 1); 807 808 return now_from_boot_ns - (u64)diff * 1000; 809 } 810 811 static void iwl_mvm_ftm_get_lci_civic(struct iwl_mvm *mvm, 812 struct cfg80211_pmsr_result *res) 813 { 814 struct iwl_mvm_loc_entry *entry; 815 816 list_for_each_entry(entry, &mvm->ftm_initiator.loc_list, list) { 817 if (!ether_addr_equal_unaligned(res->addr, entry->addr)) 818 continue; 819 820 if (entry->lci_len) { 821 res->ftm.lci_len = entry->lci_len; 822 res->ftm.lci = entry->buf; 823 } 824 825 if (entry->civic_len) { 826 res->ftm.civicloc_len = entry->civic_len; 827 res->ftm.civicloc = entry->buf + entry->lci_len; 828 } 829 830 /* we found the entry we needed */ 831 break; 832 } 833 } 834 835 static int iwl_mvm_ftm_range_resp_valid(struct iwl_mvm *mvm, u8 request_id, 836 u8 num_of_aps) 837 { 838 lockdep_assert_held(&mvm->mutex); 839 840 if (request_id != (u8)mvm->ftm_initiator.req->cookie) { 841 IWL_ERR(mvm, "Request ID mismatch, got %u, active %u\n", 842 request_id, (u8)mvm->ftm_initiator.req->cookie); 843 return -EINVAL; 844 } 845 846 if (num_of_aps > mvm->ftm_initiator.req->n_peers) { 847 IWL_ERR(mvm, "FTM range response invalid\n"); 848 return -EINVAL; 849 } 850 851 return 0; 852 } 853 854 static void iwl_mvm_ftm_rtt_smoothing(struct iwl_mvm *mvm, 855 struct cfg80211_pmsr_result *res) 856 { 857 struct iwl_mvm_smooth_entry *resp; 858 s64 rtt_avg, rtt = res->ftm.rtt_avg; 859 u32 undershoot, overshoot; 860 u8 alpha; 861 bool found; 862 863 if (!IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH) 864 return; 865 866 WARN_ON(rtt < 0); 867 868 if (res->status != NL80211_PMSR_STATUS_SUCCESS) { 869 IWL_DEBUG_INFO(mvm, 870 ": %pM: ignore failed measurement. Status=%u\n", 871 res->addr, res->status); 872 return; 873 } 874 875 found = false; 876 list_for_each_entry(resp, &mvm->ftm_initiator.smooth.resp, list) { 877 if (!memcmp(res->addr, resp->addr, ETH_ALEN)) { 878 found = true; 879 break; 880 } 881 } 882 883 if (!found) { 884 resp = kzalloc(sizeof(*resp), GFP_KERNEL); 885 if (!resp) 886 return; 887 888 memcpy(resp->addr, res->addr, ETH_ALEN); 889 list_add_tail(&resp->list, &mvm->ftm_initiator.smooth.resp); 890 891 resp->rtt_avg = rtt; 892 893 IWL_DEBUG_INFO(mvm, "new: %pM: rtt_avg=%lld\n", 894 resp->addr, resp->rtt_avg); 895 goto update_time; 896 } 897 898 if (res->host_time - resp->host_time > 899 IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * 1000000000) { 900 resp->rtt_avg = rtt; 901 902 IWL_DEBUG_INFO(mvm, "expired: %pM: rtt_avg=%lld\n", 903 resp->addr, resp->rtt_avg); 904 goto update_time; 905 } 906 907 /* Smooth the results based on the tracked RTT average */ 908 undershoot = IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT; 909 overshoot = IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT; 910 alpha = IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA; 911 912 rtt_avg = (alpha * rtt + (100 - alpha) * resp->rtt_avg) / 100; 913 914 IWL_DEBUG_INFO(mvm, 915 "%pM: prev rtt_avg=%lld, new rtt_avg=%lld, rtt=%lld\n", 916 resp->addr, resp->rtt_avg, rtt_avg, rtt); 917 918 /* 919 * update the responder's average RTT results regardless of 920 * the under/over shoot logic below 921 */ 922 resp->rtt_avg = rtt_avg; 923 924 /* smooth the results */ 925 if (rtt_avg > rtt && (rtt_avg - rtt) > undershoot) { 926 res->ftm.rtt_avg = rtt_avg; 927 928 IWL_DEBUG_INFO(mvm, 929 "undershoot: val=%lld\n", 930 (rtt_avg - rtt)); 931 } else if (rtt_avg < rtt && (rtt - rtt_avg) > 932 overshoot) { 933 res->ftm.rtt_avg = rtt_avg; 934 IWL_DEBUG_INFO(mvm, 935 "overshoot: val=%lld\n", 936 (rtt - rtt_avg)); 937 } 938 939 update_time: 940 resp->host_time = res->host_time; 941 } 942 943 static void iwl_mvm_debug_range_resp(struct iwl_mvm *mvm, u8 index, 944 struct cfg80211_pmsr_result *res) 945 { 946 s64 rtt_avg = div_s64(res->ftm.rtt_avg * 100, 6666); 947 948 IWL_DEBUG_INFO(mvm, "entry %d\n", index); 949 IWL_DEBUG_INFO(mvm, "\tstatus: %d\n", res->status); 950 IWL_DEBUG_INFO(mvm, "\tBSSID: %pM\n", res->addr); 951 IWL_DEBUG_INFO(mvm, "\thost time: %llu\n", res->host_time); 952 IWL_DEBUG_INFO(mvm, "\tburst index: %hhu\n", res->ftm.burst_index); 953 IWL_DEBUG_INFO(mvm, "\tsuccess num: %u\n", res->ftm.num_ftmr_successes); 954 IWL_DEBUG_INFO(mvm, "\trssi: %d\n", res->ftm.rssi_avg); 955 IWL_DEBUG_INFO(mvm, "\trssi spread: %hhu\n", res->ftm.rssi_spread); 956 IWL_DEBUG_INFO(mvm, "\trtt: %lld\n", res->ftm.rtt_avg); 957 IWL_DEBUG_INFO(mvm, "\trtt var: %llu\n", res->ftm.rtt_variance); 958 IWL_DEBUG_INFO(mvm, "\trtt spread: %llu\n", res->ftm.rtt_spread); 959 IWL_DEBUG_INFO(mvm, "\tdistance: %lld\n", rtt_avg); 960 } 961 962 static void 963 iwl_mvm_ftm_pasn_update_pn(struct iwl_mvm *mvm, 964 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap) 965 { 966 struct iwl_mvm_ftm_pasn_entry *entry; 967 968 lockdep_assert_held(&mvm->mutex); 969 970 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) { 971 if (memcmp(fw_ap->bssid, entry->addr, sizeof(entry->addr))) 972 continue; 973 974 memcpy(entry->rx_pn, fw_ap->rx_pn, sizeof(entry->rx_pn)); 975 memcpy(entry->tx_pn, fw_ap->tx_pn, sizeof(entry->tx_pn)); 976 return; 977 } 978 } 979 980 static u8 iwl_mvm_ftm_get_range_resp_ver(struct iwl_mvm *mvm) 981 { 982 if (!fw_has_api(&mvm->fw->ucode_capa, 983 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ)) 984 return 5; 985 986 /* Starting from version 8, the FW advertises the version */ 987 if (mvm->cmd_ver.range_resp >= 8) 988 return mvm->cmd_ver.range_resp; 989 else if (fw_has_api(&mvm->fw->ucode_capa, 990 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY)) 991 return 7; 992 993 /* The first version of the new range request API */ 994 return 6; 995 } 996 997 static bool iwl_mvm_ftm_resp_size_validation(u8 ver, unsigned int pkt_len) 998 { 999 switch (ver) { 1000 case 8: 1001 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v8); 1002 case 7: 1003 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v7); 1004 case 6: 1005 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v6); 1006 case 5: 1007 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v5); 1008 default: 1009 WARN_ONCE(1, "FTM: unsupported range response version %u", ver); 1010 return false; 1011 } 1012 } 1013 1014 void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 1015 { 1016 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1017 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1018 struct iwl_tof_range_rsp_ntfy_v5 *fw_resp_v5 = (void *)pkt->data; 1019 struct iwl_tof_range_rsp_ntfy_v6 *fw_resp_v6 = (void *)pkt->data; 1020 struct iwl_tof_range_rsp_ntfy_v7 *fw_resp_v7 = (void *)pkt->data; 1021 struct iwl_tof_range_rsp_ntfy_v8 *fw_resp_v8 = (void *)pkt->data; 1022 int i; 1023 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 1024 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ); 1025 u8 num_of_aps, last_in_batch; 1026 u8 notif_ver = iwl_mvm_ftm_get_range_resp_ver(mvm); 1027 1028 lockdep_assert_held(&mvm->mutex); 1029 1030 if (!mvm->ftm_initiator.req) { 1031 return; 1032 } 1033 1034 if (unlikely(!iwl_mvm_ftm_resp_size_validation(notif_ver, pkt_len))) 1035 return; 1036 1037 if (new_api) { 1038 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v8->request_id, 1039 fw_resp_v8->num_of_aps)) 1040 return; 1041 1042 num_of_aps = fw_resp_v8->num_of_aps; 1043 last_in_batch = fw_resp_v8->last_report; 1044 } else { 1045 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v5->request_id, 1046 fw_resp_v5->num_of_aps)) 1047 return; 1048 1049 num_of_aps = fw_resp_v5->num_of_aps; 1050 last_in_batch = fw_resp_v5->last_in_batch; 1051 } 1052 1053 IWL_DEBUG_INFO(mvm, "Range response received\n"); 1054 IWL_DEBUG_INFO(mvm, "request id: %lld, num of entries: %hhu\n", 1055 mvm->ftm_initiator.req->cookie, num_of_aps); 1056 1057 for (i = 0; i < num_of_aps && i < IWL_MVM_TOF_MAX_APS; i++) { 1058 struct cfg80211_pmsr_result result = {}; 1059 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap; 1060 int peer_idx; 1061 1062 if (new_api) { 1063 if (notif_ver == 8) { 1064 fw_ap = &fw_resp_v8->ap[i]; 1065 iwl_mvm_ftm_pasn_update_pn(mvm, fw_ap); 1066 } else if (notif_ver == 7) { 1067 fw_ap = (void *)&fw_resp_v7->ap[i]; 1068 } else { 1069 fw_ap = (void *)&fw_resp_v6->ap[i]; 1070 } 1071 1072 result.final = fw_ap->last_burst; 1073 result.ap_tsf = le32_to_cpu(fw_ap->start_tsf); 1074 result.ap_tsf_valid = 1; 1075 } else { 1076 /* the first part is the same for old and new APIs */ 1077 fw_ap = (void *)&fw_resp_v5->ap[i]; 1078 /* 1079 * FIXME: the firmware needs to report this, we don't 1080 * even know the number of bursts the responder picked 1081 * (if we asked it to) 1082 */ 1083 result.final = 0; 1084 } 1085 1086 peer_idx = iwl_mvm_ftm_find_peer(mvm->ftm_initiator.req, 1087 fw_ap->bssid); 1088 if (peer_idx < 0) { 1089 IWL_WARN(mvm, 1090 "Unknown address (%pM, target #%d) in FTM response\n", 1091 fw_ap->bssid, i); 1092 continue; 1093 } 1094 1095 switch (fw_ap->measure_status) { 1096 case IWL_TOF_ENTRY_SUCCESS: 1097 result.status = NL80211_PMSR_STATUS_SUCCESS; 1098 break; 1099 case IWL_TOF_ENTRY_TIMING_MEASURE_TIMEOUT: 1100 result.status = NL80211_PMSR_STATUS_TIMEOUT; 1101 break; 1102 case IWL_TOF_ENTRY_NO_RESPONSE: 1103 result.status = NL80211_PMSR_STATUS_FAILURE; 1104 result.ftm.failure_reason = 1105 NL80211_PMSR_FTM_FAILURE_NO_RESPONSE; 1106 break; 1107 case IWL_TOF_ENTRY_REQUEST_REJECTED: 1108 result.status = NL80211_PMSR_STATUS_FAILURE; 1109 result.ftm.failure_reason = 1110 NL80211_PMSR_FTM_FAILURE_PEER_BUSY; 1111 result.ftm.busy_retry_time = fw_ap->refusal_period; 1112 break; 1113 default: 1114 result.status = NL80211_PMSR_STATUS_FAILURE; 1115 result.ftm.failure_reason = 1116 NL80211_PMSR_FTM_FAILURE_UNSPECIFIED; 1117 break; 1118 } 1119 memcpy(result.addr, fw_ap->bssid, ETH_ALEN); 1120 result.host_time = iwl_mvm_ftm_get_host_time(mvm, 1121 fw_ap->timestamp); 1122 result.type = NL80211_PMSR_TYPE_FTM; 1123 result.ftm.burst_index = mvm->ftm_initiator.responses[peer_idx]; 1124 mvm->ftm_initiator.responses[peer_idx]++; 1125 result.ftm.rssi_avg = fw_ap->rssi; 1126 result.ftm.rssi_avg_valid = 1; 1127 result.ftm.rssi_spread = fw_ap->rssi_spread; 1128 result.ftm.rssi_spread_valid = 1; 1129 result.ftm.rtt_avg = (s32)le32_to_cpu(fw_ap->rtt); 1130 result.ftm.rtt_avg_valid = 1; 1131 result.ftm.rtt_variance = le32_to_cpu(fw_ap->rtt_variance); 1132 result.ftm.rtt_variance_valid = 1; 1133 result.ftm.rtt_spread = le32_to_cpu(fw_ap->rtt_spread); 1134 result.ftm.rtt_spread_valid = 1; 1135 1136 iwl_mvm_ftm_get_lci_civic(mvm, &result); 1137 1138 iwl_mvm_ftm_rtt_smoothing(mvm, &result); 1139 1140 cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev, 1141 mvm->ftm_initiator.req, 1142 &result, GFP_KERNEL); 1143 1144 if (fw_has_api(&mvm->fw->ucode_capa, 1145 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY)) 1146 IWL_DEBUG_INFO(mvm, "RTT confidence: %hhu\n", 1147 fw_ap->rttConfidence); 1148 1149 iwl_mvm_debug_range_resp(mvm, i, &result); 1150 } 1151 1152 if (last_in_batch) { 1153 cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev, 1154 mvm->ftm_initiator.req, 1155 GFP_KERNEL); 1156 iwl_mvm_ftm_reset(mvm); 1157 } 1158 } 1159 1160 void iwl_mvm_ftm_lc_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 1161 { 1162 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1163 const struct ieee80211_mgmt *mgmt = (void *)pkt->data; 1164 size_t len = iwl_rx_packet_payload_len(pkt); 1165 struct iwl_mvm_loc_entry *entry; 1166 const u8 *ies, *lci, *civic, *msr_ie; 1167 size_t ies_len, lci_len = 0, civic_len = 0; 1168 size_t baselen = IEEE80211_MIN_ACTION_SIZE + 1169 sizeof(mgmt->u.action.u.ftm); 1170 static const u8 rprt_type_lci = IEEE80211_SPCT_MSR_RPRT_TYPE_LCI; 1171 static const u8 rprt_type_civic = IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC; 1172 1173 if (len <= baselen) 1174 return; 1175 1176 lockdep_assert_held(&mvm->mutex); 1177 1178 ies = mgmt->u.action.u.ftm.variable; 1179 ies_len = len - baselen; 1180 1181 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len, 1182 &rprt_type_lci, 1, 4); 1183 if (msr_ie) { 1184 lci = msr_ie + 2; 1185 lci_len = msr_ie[1]; 1186 } 1187 1188 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len, 1189 &rprt_type_civic, 1, 4); 1190 if (msr_ie) { 1191 civic = msr_ie + 2; 1192 civic_len = msr_ie[1]; 1193 } 1194 1195 entry = kmalloc(sizeof(*entry) + lci_len + civic_len, GFP_KERNEL); 1196 if (!entry) 1197 return; 1198 1199 memcpy(entry->addr, mgmt->bssid, ETH_ALEN); 1200 1201 entry->lci_len = lci_len; 1202 if (lci_len) 1203 memcpy(entry->buf, lci, lci_len); 1204 1205 entry->civic_len = civic_len; 1206 if (civic_len) 1207 memcpy(entry->buf + lci_len, civic, civic_len); 1208 1209 list_add_tail(&entry->list, &mvm->ftm_initiator.loc_list); 1210 } 1211