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 struct ieee80211_sta *sta; 494 495 rcu_read_lock(); 496 497 sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); 498 if (sta->mfp) 499 FTM_PUT_FLAG(PMF); 500 501 rcu_read_unlock(); 502 503 target->sta_id = mvmvif->ap_sta_id; 504 } else { 505 target->sta_id = IWL_MVM_INVALID_STA; 506 } 507 508 /* 509 * TODO: Beacon interval is currently unknown, so use the common value 510 * of 100 TUs. 511 */ 512 target->beacon_interval = cpu_to_le16(100); 513 return 0; 514 } 515 516 static int iwl_mvm_ftm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *hcmd) 517 { 518 u32 status; 519 int err = iwl_mvm_send_cmd_status(mvm, hcmd, &status); 520 521 if (!err && status) { 522 IWL_ERR(mvm, "FTM range request command failure, status: %u\n", 523 status); 524 err = iwl_ftm_range_request_status_to_err(status); 525 } 526 527 return err; 528 } 529 530 static int iwl_mvm_ftm_start_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 531 struct cfg80211_pmsr_request *req) 532 { 533 struct iwl_tof_range_req_cmd_v5 cmd_v5; 534 struct iwl_host_cmd hcmd = { 535 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 536 .dataflags[0] = IWL_HCMD_DFL_DUP, 537 .data[0] = &cmd_v5, 538 .len[0] = sizeof(cmd_v5), 539 }; 540 u8 i; 541 int err; 542 543 iwl_mvm_ftm_cmd_v5(mvm, vif, &cmd_v5, req); 544 545 for (i = 0; i < cmd_v5.num_of_ap; i++) { 546 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 547 548 err = iwl_mvm_ftm_put_target_v2(mvm, peer, &cmd_v5.ap[i]); 549 if (err) 550 return err; 551 } 552 553 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 554 } 555 556 static int iwl_mvm_ftm_start_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 557 struct cfg80211_pmsr_request *req) 558 { 559 struct iwl_tof_range_req_cmd_v7 cmd_v7; 560 struct iwl_host_cmd hcmd = { 561 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 562 .dataflags[0] = IWL_HCMD_DFL_DUP, 563 .data[0] = &cmd_v7, 564 .len[0] = sizeof(cmd_v7), 565 }; 566 u8 i; 567 int err; 568 569 /* 570 * Versions 7 and 8 has the same structure except from the responders 571 * list, so iwl_mvm_ftm_cmd() can be used for version 7 too. 572 */ 573 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd_v7, req); 574 575 for (i = 0; i < cmd_v7.num_of_ap; i++) { 576 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 577 578 err = iwl_mvm_ftm_put_target_v3(mvm, peer, &cmd_v7.ap[i]); 579 if (err) 580 return err; 581 } 582 583 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 584 } 585 586 static int iwl_mvm_ftm_start_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 587 struct cfg80211_pmsr_request *req) 588 { 589 struct iwl_tof_range_req_cmd_v8 cmd; 590 struct iwl_host_cmd hcmd = { 591 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 592 .dataflags[0] = IWL_HCMD_DFL_DUP, 593 .data[0] = &cmd, 594 .len[0] = sizeof(cmd), 595 }; 596 u8 i; 597 int err; 598 599 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd, req); 600 601 for (i = 0; i < cmd.num_of_ap; i++) { 602 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 603 604 err = iwl_mvm_ftm_put_target_v4(mvm, peer, &cmd.ap[i]); 605 if (err) 606 return err; 607 } 608 609 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 610 } 611 612 static int iwl_mvm_ftm_start_v9(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 613 struct cfg80211_pmsr_request *req) 614 { 615 struct iwl_tof_range_req_cmd_v9 cmd; 616 struct iwl_host_cmd hcmd = { 617 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 618 .dataflags[0] = IWL_HCMD_DFL_DUP, 619 .data[0] = &cmd, 620 .len[0] = sizeof(cmd), 621 }; 622 u8 i; 623 int err; 624 625 iwl_mvm_ftm_cmd_common(mvm, vif, &cmd, req); 626 627 for (i = 0; i < cmd.num_of_ap; i++) { 628 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 629 struct iwl_tof_range_req_ap_entry_v6 *target = &cmd.ap[i]; 630 631 err = iwl_mvm_ftm_put_target(mvm, vif, peer, target); 632 if (err) 633 return err; 634 } 635 636 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 637 } 638 639 static void iter(struct ieee80211_hw *hw, 640 struct ieee80211_vif *vif, 641 struct ieee80211_sta *sta, 642 struct ieee80211_key_conf *key, 643 void *data) 644 { 645 struct iwl_tof_range_req_ap_entry_v6 *target = data; 646 647 if (!sta || memcmp(sta->addr, target->bssid, ETH_ALEN)) 648 return; 649 650 WARN_ON(!sta->mfp); 651 652 if (WARN_ON(key->keylen > sizeof(target->tk))) 653 return; 654 655 memcpy(target->tk, key->key, key->keylen); 656 target->cipher = iwl_mvm_cipher_to_location_cipher(key->cipher); 657 WARN_ON(target->cipher == IWL_LOCATION_CIPHER_INVALID); 658 } 659 660 static void 661 iwl_mvm_ftm_set_secured_ranging(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 662 struct iwl_tof_range_req_ap_entry_v7 *target) 663 { 664 struct iwl_mvm_ftm_pasn_entry *entry; 665 u32 flags = le32_to_cpu(target->initiator_ap_flags); 666 667 if (!(flags & (IWL_INITIATOR_AP_FLAGS_NON_TB | 668 IWL_INITIATOR_AP_FLAGS_TB))) 669 return; 670 671 lockdep_assert_held(&mvm->mutex); 672 673 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) { 674 if (memcmp(entry->addr, target->bssid, sizeof(entry->addr))) 675 continue; 676 677 target->cipher = entry->cipher; 678 memcpy(target->hltk, entry->hltk, sizeof(target->hltk)); 679 680 if (vif->bss_conf.assoc && 681 !memcmp(vif->bss_conf.bssid, target->bssid, 682 sizeof(target->bssid))) 683 ieee80211_iter_keys(mvm->hw, vif, iter, target); 684 else 685 memcpy(target->tk, entry->tk, sizeof(target->tk)); 686 687 memcpy(target->rx_pn, entry->rx_pn, sizeof(target->rx_pn)); 688 memcpy(target->tx_pn, entry->tx_pn, sizeof(target->tx_pn)); 689 690 target->initiator_ap_flags |= 691 cpu_to_le32(IWL_INITIATOR_AP_FLAGS_SECURED); 692 return; 693 } 694 } 695 696 static int 697 iwl_mvm_ftm_put_target_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 698 struct cfg80211_pmsr_request_peer *peer, 699 struct iwl_tof_range_req_ap_entry_v7 *target) 700 { 701 int err = iwl_mvm_ftm_put_target(mvm, vif, peer, (void *)target); 702 if (err) 703 return err; 704 705 iwl_mvm_ftm_set_secured_ranging(mvm, vif, target); 706 return err; 707 } 708 709 static int iwl_mvm_ftm_start_v11(struct iwl_mvm *mvm, 710 struct ieee80211_vif *vif, 711 struct cfg80211_pmsr_request *req) 712 { 713 struct iwl_tof_range_req_cmd_v11 cmd; 714 struct iwl_host_cmd hcmd = { 715 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 716 .dataflags[0] = IWL_HCMD_DFL_DUP, 717 .data[0] = &cmd, 718 .len[0] = sizeof(cmd), 719 }; 720 u8 i; 721 int err; 722 723 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); 724 725 for (i = 0; i < cmd.num_of_ap; i++) { 726 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 727 struct iwl_tof_range_req_ap_entry_v7 *target = &cmd.ap[i]; 728 729 err = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, target); 730 if (err) 731 return err; 732 } 733 734 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 735 } 736 737 static void 738 iwl_mvm_ftm_set_ndp_params(struct iwl_mvm *mvm, 739 struct iwl_tof_range_req_ap_entry_v8 *target) 740 { 741 /* Only 2 STS are supported on Tx */ 742 u32 i2r_max_sts = IWL_MVM_FTM_I2R_MAX_STS > 1 ? 1 : 743 IWL_MVM_FTM_I2R_MAX_STS; 744 745 target->r2i_ndp_params = IWL_MVM_FTM_R2I_MAX_REP | 746 (IWL_MVM_FTM_R2I_MAX_STS << IWL_LOCATION_MAX_STS_POS); 747 target->i2r_ndp_params = IWL_MVM_FTM_I2R_MAX_REP | 748 (i2r_max_sts << IWL_LOCATION_MAX_STS_POS); 749 target->r2i_max_total_ltf = IWL_MVM_FTM_R2I_MAX_TOTAL_LTF; 750 target->i2r_max_total_ltf = IWL_MVM_FTM_I2R_MAX_TOTAL_LTF; 751 } 752 753 static int iwl_mvm_ftm_start_v12(struct iwl_mvm *mvm, 754 struct ieee80211_vif *vif, 755 struct cfg80211_pmsr_request *req) 756 { 757 struct iwl_tof_range_req_cmd_v12 cmd; 758 struct iwl_host_cmd hcmd = { 759 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 760 .dataflags[0] = IWL_HCMD_DFL_DUP, 761 .data[0] = &cmd, 762 .len[0] = sizeof(cmd), 763 }; 764 u8 i; 765 int err; 766 767 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); 768 769 for (i = 0; i < cmd.num_of_ap; i++) { 770 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 771 struct iwl_tof_range_req_ap_entry_v8 *target = &cmd.ap[i]; 772 u32 flags; 773 774 err = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, (void *)target); 775 if (err) 776 return err; 777 778 iwl_mvm_ftm_set_ndp_params(mvm, target); 779 780 /* 781 * If secure LTF is turned off, replace the flag with PMF only 782 */ 783 flags = le32_to_cpu(target->initiator_ap_flags); 784 if ((flags & IWL_INITIATOR_AP_FLAGS_SECURED) && 785 !IWL_MVM_FTM_INITIATOR_SECURE_LTF) { 786 flags &= ~IWL_INITIATOR_AP_FLAGS_SECURED; 787 flags |= IWL_INITIATOR_AP_FLAGS_PMF; 788 target->initiator_ap_flags = cpu_to_le32(flags); 789 } 790 } 791 792 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 793 } 794 795 int iwl_mvm_ftm_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 796 struct cfg80211_pmsr_request *req) 797 { 798 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 799 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ); 800 int err; 801 802 lockdep_assert_held(&mvm->mutex); 803 804 if (mvm->ftm_initiator.req) 805 return -EBUSY; 806 807 if (new_api) { 808 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LOCATION_GROUP, 809 TOF_RANGE_REQ_CMD, 810 IWL_FW_CMD_VER_UNKNOWN); 811 812 switch (cmd_ver) { 813 case 12: 814 err = iwl_mvm_ftm_start_v12(mvm, vif, req); 815 break; 816 case 11: 817 err = iwl_mvm_ftm_start_v11(mvm, vif, req); 818 break; 819 case 9: 820 case 10: 821 err = iwl_mvm_ftm_start_v9(mvm, vif, req); 822 break; 823 case 8: 824 err = iwl_mvm_ftm_start_v8(mvm, vif, req); 825 break; 826 default: 827 err = iwl_mvm_ftm_start_v7(mvm, vif, req); 828 break; 829 } 830 } else { 831 err = iwl_mvm_ftm_start_v5(mvm, vif, req); 832 } 833 834 if (!err) { 835 mvm->ftm_initiator.req = req; 836 mvm->ftm_initiator.req_wdev = ieee80211_vif_to_wdev(vif); 837 } 838 839 return err; 840 } 841 842 void iwl_mvm_ftm_abort(struct iwl_mvm *mvm, struct cfg80211_pmsr_request *req) 843 { 844 struct iwl_tof_range_abort_cmd cmd = { 845 .request_id = req->cookie, 846 }; 847 848 lockdep_assert_held(&mvm->mutex); 849 850 if (req != mvm->ftm_initiator.req) 851 return; 852 853 iwl_mvm_ftm_reset(mvm); 854 855 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_RANGE_ABORT_CMD, 856 LOCATION_GROUP, 0), 857 0, sizeof(cmd), &cmd)) 858 IWL_ERR(mvm, "failed to abort FTM process\n"); 859 } 860 861 static int iwl_mvm_ftm_find_peer(struct cfg80211_pmsr_request *req, 862 const u8 *addr) 863 { 864 int i; 865 866 for (i = 0; i < req->n_peers; i++) { 867 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 868 869 if (ether_addr_equal_unaligned(peer->addr, addr)) 870 return i; 871 } 872 873 return -ENOENT; 874 } 875 876 static u64 iwl_mvm_ftm_get_host_time(struct iwl_mvm *mvm, __le32 fw_gp2_ts) 877 { 878 u32 gp2_ts = le32_to_cpu(fw_gp2_ts); 879 u32 curr_gp2, diff; 880 u64 now_from_boot_ns; 881 882 iwl_mvm_get_sync_time(mvm, &curr_gp2, &now_from_boot_ns); 883 884 if (curr_gp2 >= gp2_ts) 885 diff = curr_gp2 - gp2_ts; 886 else 887 diff = curr_gp2 + (U32_MAX - gp2_ts + 1); 888 889 return now_from_boot_ns - (u64)diff * 1000; 890 } 891 892 static void iwl_mvm_ftm_get_lci_civic(struct iwl_mvm *mvm, 893 struct cfg80211_pmsr_result *res) 894 { 895 struct iwl_mvm_loc_entry *entry; 896 897 list_for_each_entry(entry, &mvm->ftm_initiator.loc_list, list) { 898 if (!ether_addr_equal_unaligned(res->addr, entry->addr)) 899 continue; 900 901 if (entry->lci_len) { 902 res->ftm.lci_len = entry->lci_len; 903 res->ftm.lci = entry->buf; 904 } 905 906 if (entry->civic_len) { 907 res->ftm.civicloc_len = entry->civic_len; 908 res->ftm.civicloc = entry->buf + entry->lci_len; 909 } 910 911 /* we found the entry we needed */ 912 break; 913 } 914 } 915 916 static int iwl_mvm_ftm_range_resp_valid(struct iwl_mvm *mvm, u8 request_id, 917 u8 num_of_aps) 918 { 919 lockdep_assert_held(&mvm->mutex); 920 921 if (request_id != (u8)mvm->ftm_initiator.req->cookie) { 922 IWL_ERR(mvm, "Request ID mismatch, got %u, active %u\n", 923 request_id, (u8)mvm->ftm_initiator.req->cookie); 924 return -EINVAL; 925 } 926 927 if (num_of_aps > mvm->ftm_initiator.req->n_peers) { 928 IWL_ERR(mvm, "FTM range response invalid\n"); 929 return -EINVAL; 930 } 931 932 return 0; 933 } 934 935 static void iwl_mvm_ftm_rtt_smoothing(struct iwl_mvm *mvm, 936 struct cfg80211_pmsr_result *res) 937 { 938 struct iwl_mvm_smooth_entry *resp; 939 s64 rtt_avg, rtt = res->ftm.rtt_avg; 940 u32 undershoot, overshoot; 941 u8 alpha; 942 bool found; 943 944 if (!IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH) 945 return; 946 947 WARN_ON(rtt < 0); 948 949 if (res->status != NL80211_PMSR_STATUS_SUCCESS) { 950 IWL_DEBUG_INFO(mvm, 951 ": %pM: ignore failed measurement. Status=%u\n", 952 res->addr, res->status); 953 return; 954 } 955 956 found = false; 957 list_for_each_entry(resp, &mvm->ftm_initiator.smooth.resp, list) { 958 if (!memcmp(res->addr, resp->addr, ETH_ALEN)) { 959 found = true; 960 break; 961 } 962 } 963 964 if (!found) { 965 resp = kzalloc(sizeof(*resp), GFP_KERNEL); 966 if (!resp) 967 return; 968 969 memcpy(resp->addr, res->addr, ETH_ALEN); 970 list_add_tail(&resp->list, &mvm->ftm_initiator.smooth.resp); 971 972 resp->rtt_avg = rtt; 973 974 IWL_DEBUG_INFO(mvm, "new: %pM: rtt_avg=%lld\n", 975 resp->addr, resp->rtt_avg); 976 goto update_time; 977 } 978 979 if (res->host_time - resp->host_time > 980 IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * 1000000000) { 981 resp->rtt_avg = rtt; 982 983 IWL_DEBUG_INFO(mvm, "expired: %pM: rtt_avg=%lld\n", 984 resp->addr, resp->rtt_avg); 985 goto update_time; 986 } 987 988 /* Smooth the results based on the tracked RTT average */ 989 undershoot = IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT; 990 overshoot = IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT; 991 alpha = IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA; 992 993 rtt_avg = (alpha * rtt + (100 - alpha) * resp->rtt_avg) / 100; 994 995 IWL_DEBUG_INFO(mvm, 996 "%pM: prev rtt_avg=%lld, new rtt_avg=%lld, rtt=%lld\n", 997 resp->addr, resp->rtt_avg, rtt_avg, rtt); 998 999 /* 1000 * update the responder's average RTT results regardless of 1001 * the under/over shoot logic below 1002 */ 1003 resp->rtt_avg = rtt_avg; 1004 1005 /* smooth the results */ 1006 if (rtt_avg > rtt && (rtt_avg - rtt) > undershoot) { 1007 res->ftm.rtt_avg = rtt_avg; 1008 1009 IWL_DEBUG_INFO(mvm, 1010 "undershoot: val=%lld\n", 1011 (rtt_avg - rtt)); 1012 } else if (rtt_avg < rtt && (rtt - rtt_avg) > 1013 overshoot) { 1014 res->ftm.rtt_avg = rtt_avg; 1015 IWL_DEBUG_INFO(mvm, 1016 "overshoot: val=%lld\n", 1017 (rtt - rtt_avg)); 1018 } 1019 1020 update_time: 1021 resp->host_time = res->host_time; 1022 } 1023 1024 static void iwl_mvm_debug_range_resp(struct iwl_mvm *mvm, u8 index, 1025 struct cfg80211_pmsr_result *res) 1026 { 1027 s64 rtt_avg = div_s64(res->ftm.rtt_avg * 100, 6666); 1028 1029 IWL_DEBUG_INFO(mvm, "entry %d\n", index); 1030 IWL_DEBUG_INFO(mvm, "\tstatus: %d\n", res->status); 1031 IWL_DEBUG_INFO(mvm, "\tBSSID: %pM\n", res->addr); 1032 IWL_DEBUG_INFO(mvm, "\thost time: %llu\n", res->host_time); 1033 IWL_DEBUG_INFO(mvm, "\tburst index: %hhu\n", res->ftm.burst_index); 1034 IWL_DEBUG_INFO(mvm, "\tsuccess num: %u\n", res->ftm.num_ftmr_successes); 1035 IWL_DEBUG_INFO(mvm, "\trssi: %d\n", res->ftm.rssi_avg); 1036 IWL_DEBUG_INFO(mvm, "\trssi spread: %hhu\n", res->ftm.rssi_spread); 1037 IWL_DEBUG_INFO(mvm, "\trtt: %lld\n", res->ftm.rtt_avg); 1038 IWL_DEBUG_INFO(mvm, "\trtt var: %llu\n", res->ftm.rtt_variance); 1039 IWL_DEBUG_INFO(mvm, "\trtt spread: %llu\n", res->ftm.rtt_spread); 1040 IWL_DEBUG_INFO(mvm, "\tdistance: %lld\n", rtt_avg); 1041 } 1042 1043 static void 1044 iwl_mvm_ftm_pasn_update_pn(struct iwl_mvm *mvm, 1045 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap) 1046 { 1047 struct iwl_mvm_ftm_pasn_entry *entry; 1048 1049 lockdep_assert_held(&mvm->mutex); 1050 1051 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) { 1052 if (memcmp(fw_ap->bssid, entry->addr, sizeof(entry->addr))) 1053 continue; 1054 1055 memcpy(entry->rx_pn, fw_ap->rx_pn, sizeof(entry->rx_pn)); 1056 memcpy(entry->tx_pn, fw_ap->tx_pn, sizeof(entry->tx_pn)); 1057 return; 1058 } 1059 } 1060 1061 static u8 iwl_mvm_ftm_get_range_resp_ver(struct iwl_mvm *mvm) 1062 { 1063 if (!fw_has_api(&mvm->fw->ucode_capa, 1064 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ)) 1065 return 5; 1066 1067 /* Starting from version 8, the FW advertises the version */ 1068 if (mvm->cmd_ver.range_resp >= 8) 1069 return mvm->cmd_ver.range_resp; 1070 else if (fw_has_api(&mvm->fw->ucode_capa, 1071 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY)) 1072 return 7; 1073 1074 /* The first version of the new range request API */ 1075 return 6; 1076 } 1077 1078 static bool iwl_mvm_ftm_resp_size_validation(u8 ver, unsigned int pkt_len) 1079 { 1080 switch (ver) { 1081 case 8: 1082 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v8); 1083 case 7: 1084 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v7); 1085 case 6: 1086 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v6); 1087 case 5: 1088 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v5); 1089 default: 1090 WARN_ONCE(1, "FTM: unsupported range response version %u", ver); 1091 return false; 1092 } 1093 } 1094 1095 void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 1096 { 1097 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1098 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1099 struct iwl_tof_range_rsp_ntfy_v5 *fw_resp_v5 = (void *)pkt->data; 1100 struct iwl_tof_range_rsp_ntfy_v6 *fw_resp_v6 = (void *)pkt->data; 1101 struct iwl_tof_range_rsp_ntfy_v7 *fw_resp_v7 = (void *)pkt->data; 1102 struct iwl_tof_range_rsp_ntfy_v8 *fw_resp_v8 = (void *)pkt->data; 1103 int i; 1104 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 1105 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ); 1106 u8 num_of_aps, last_in_batch; 1107 u8 notif_ver = iwl_mvm_ftm_get_range_resp_ver(mvm); 1108 1109 lockdep_assert_held(&mvm->mutex); 1110 1111 if (!mvm->ftm_initiator.req) { 1112 return; 1113 } 1114 1115 if (unlikely(!iwl_mvm_ftm_resp_size_validation(notif_ver, pkt_len))) 1116 return; 1117 1118 if (new_api) { 1119 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v8->request_id, 1120 fw_resp_v8->num_of_aps)) 1121 return; 1122 1123 num_of_aps = fw_resp_v8->num_of_aps; 1124 last_in_batch = fw_resp_v8->last_report; 1125 } else { 1126 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v5->request_id, 1127 fw_resp_v5->num_of_aps)) 1128 return; 1129 1130 num_of_aps = fw_resp_v5->num_of_aps; 1131 last_in_batch = fw_resp_v5->last_in_batch; 1132 } 1133 1134 IWL_DEBUG_INFO(mvm, "Range response received\n"); 1135 IWL_DEBUG_INFO(mvm, "request id: %lld, num of entries: %hhu\n", 1136 mvm->ftm_initiator.req->cookie, num_of_aps); 1137 1138 for (i = 0; i < num_of_aps && i < IWL_MVM_TOF_MAX_APS; i++) { 1139 struct cfg80211_pmsr_result result = {}; 1140 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap; 1141 int peer_idx; 1142 1143 if (new_api) { 1144 if (notif_ver == 8) { 1145 fw_ap = &fw_resp_v8->ap[i]; 1146 iwl_mvm_ftm_pasn_update_pn(mvm, fw_ap); 1147 } else if (notif_ver == 7) { 1148 fw_ap = (void *)&fw_resp_v7->ap[i]; 1149 } else { 1150 fw_ap = (void *)&fw_resp_v6->ap[i]; 1151 } 1152 1153 result.final = fw_ap->last_burst; 1154 result.ap_tsf = le32_to_cpu(fw_ap->start_tsf); 1155 result.ap_tsf_valid = 1; 1156 } else { 1157 /* the first part is the same for old and new APIs */ 1158 fw_ap = (void *)&fw_resp_v5->ap[i]; 1159 /* 1160 * FIXME: the firmware needs to report this, we don't 1161 * even know the number of bursts the responder picked 1162 * (if we asked it to) 1163 */ 1164 result.final = 0; 1165 } 1166 1167 peer_idx = iwl_mvm_ftm_find_peer(mvm->ftm_initiator.req, 1168 fw_ap->bssid); 1169 if (peer_idx < 0) { 1170 IWL_WARN(mvm, 1171 "Unknown address (%pM, target #%d) in FTM response\n", 1172 fw_ap->bssid, i); 1173 continue; 1174 } 1175 1176 switch (fw_ap->measure_status) { 1177 case IWL_TOF_ENTRY_SUCCESS: 1178 result.status = NL80211_PMSR_STATUS_SUCCESS; 1179 break; 1180 case IWL_TOF_ENTRY_TIMING_MEASURE_TIMEOUT: 1181 result.status = NL80211_PMSR_STATUS_TIMEOUT; 1182 break; 1183 case IWL_TOF_ENTRY_NO_RESPONSE: 1184 result.status = NL80211_PMSR_STATUS_FAILURE; 1185 result.ftm.failure_reason = 1186 NL80211_PMSR_FTM_FAILURE_NO_RESPONSE; 1187 break; 1188 case IWL_TOF_ENTRY_REQUEST_REJECTED: 1189 result.status = NL80211_PMSR_STATUS_FAILURE; 1190 result.ftm.failure_reason = 1191 NL80211_PMSR_FTM_FAILURE_PEER_BUSY; 1192 result.ftm.busy_retry_time = fw_ap->refusal_period; 1193 break; 1194 default: 1195 result.status = NL80211_PMSR_STATUS_FAILURE; 1196 result.ftm.failure_reason = 1197 NL80211_PMSR_FTM_FAILURE_UNSPECIFIED; 1198 break; 1199 } 1200 memcpy(result.addr, fw_ap->bssid, ETH_ALEN); 1201 result.host_time = iwl_mvm_ftm_get_host_time(mvm, 1202 fw_ap->timestamp); 1203 result.type = NL80211_PMSR_TYPE_FTM; 1204 result.ftm.burst_index = mvm->ftm_initiator.responses[peer_idx]; 1205 mvm->ftm_initiator.responses[peer_idx]++; 1206 result.ftm.rssi_avg = fw_ap->rssi; 1207 result.ftm.rssi_avg_valid = 1; 1208 result.ftm.rssi_spread = fw_ap->rssi_spread; 1209 result.ftm.rssi_spread_valid = 1; 1210 result.ftm.rtt_avg = (s32)le32_to_cpu(fw_ap->rtt); 1211 result.ftm.rtt_avg_valid = 1; 1212 result.ftm.rtt_variance = le32_to_cpu(fw_ap->rtt_variance); 1213 result.ftm.rtt_variance_valid = 1; 1214 result.ftm.rtt_spread = le32_to_cpu(fw_ap->rtt_spread); 1215 result.ftm.rtt_spread_valid = 1; 1216 1217 iwl_mvm_ftm_get_lci_civic(mvm, &result); 1218 1219 iwl_mvm_ftm_rtt_smoothing(mvm, &result); 1220 1221 cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev, 1222 mvm->ftm_initiator.req, 1223 &result, GFP_KERNEL); 1224 1225 if (fw_has_api(&mvm->fw->ucode_capa, 1226 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY)) 1227 IWL_DEBUG_INFO(mvm, "RTT confidence: %hhu\n", 1228 fw_ap->rttConfidence); 1229 1230 iwl_mvm_debug_range_resp(mvm, i, &result); 1231 } 1232 1233 if (last_in_batch) { 1234 cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev, 1235 mvm->ftm_initiator.req, 1236 GFP_KERNEL); 1237 iwl_mvm_ftm_reset(mvm); 1238 } 1239 } 1240 1241 void iwl_mvm_ftm_lc_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 1242 { 1243 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1244 const struct ieee80211_mgmt *mgmt = (void *)pkt->data; 1245 size_t len = iwl_rx_packet_payload_len(pkt); 1246 struct iwl_mvm_loc_entry *entry; 1247 const u8 *ies, *lci, *civic, *msr_ie; 1248 size_t ies_len, lci_len = 0, civic_len = 0; 1249 size_t baselen = IEEE80211_MIN_ACTION_SIZE + 1250 sizeof(mgmt->u.action.u.ftm); 1251 static const u8 rprt_type_lci = IEEE80211_SPCT_MSR_RPRT_TYPE_LCI; 1252 static const u8 rprt_type_civic = IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC; 1253 1254 if (len <= baselen) 1255 return; 1256 1257 lockdep_assert_held(&mvm->mutex); 1258 1259 ies = mgmt->u.action.u.ftm.variable; 1260 ies_len = len - baselen; 1261 1262 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len, 1263 &rprt_type_lci, 1, 4); 1264 if (msr_ie) { 1265 lci = msr_ie + 2; 1266 lci_len = msr_ie[1]; 1267 } 1268 1269 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len, 1270 &rprt_type_civic, 1, 4); 1271 if (msr_ie) { 1272 civic = msr_ie + 2; 1273 civic_len = msr_ie[1]; 1274 } 1275 1276 entry = kmalloc(sizeof(*entry) + lci_len + civic_len, GFP_KERNEL); 1277 if (!entry) 1278 return; 1279 1280 memcpy(entry->addr, mgmt->bssid, ETH_ALEN); 1281 1282 entry->lci_len = lci_len; 1283 if (lci_len) 1284 memcpy(entry->buf, lci, lci_len); 1285 1286 entry->civic_len = civic_len; 1287 if (civic_len) 1288 memcpy(entry->buf + lci_len, civic, civic_len); 1289 1290 list_add_tail(&entry->list, &mvm->ftm_initiator.loc_list); 1291 } 1292