1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2015-2017 Intel Deutschland GmbH 4 * Copyright (C) 2018-2021 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 if ((peer->ftm.trigger_based || peer->ftm.non_trigger_based) && 435 peer->ftm.lmr_feedback) 436 FTM_PUT_FLAG(LMR_FEEDBACK); 437 } 438 439 static int 440 iwl_mvm_ftm_put_target_v3(struct iwl_mvm *mvm, 441 struct cfg80211_pmsr_request_peer *peer, 442 struct iwl_tof_range_req_ap_entry_v3 *target) 443 { 444 int ret; 445 446 ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num, 447 &target->bandwidth, 448 &target->ctrl_ch_position); 449 if (ret) 450 return ret; 451 452 /* 453 * Versions 3 and 4 has some common fields, so 454 * iwl_mvm_ftm_put_target_common() can be used for version 7 too. 455 */ 456 iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target); 457 458 return 0; 459 } 460 461 static int 462 iwl_mvm_ftm_put_target_v4(struct iwl_mvm *mvm, 463 struct cfg80211_pmsr_request_peer *peer, 464 struct iwl_tof_range_req_ap_entry_v4 *target) 465 { 466 int ret; 467 468 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num, 469 &target->format_bw, 470 &target->ctrl_ch_position); 471 if (ret) 472 return ret; 473 474 iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target); 475 476 return 0; 477 } 478 479 static int 480 iwl_mvm_ftm_put_target(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 481 struct cfg80211_pmsr_request_peer *peer, 482 struct iwl_tof_range_req_ap_entry_v6 *target) 483 { 484 int ret; 485 486 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num, 487 &target->format_bw, 488 &target->ctrl_ch_position); 489 if (ret) 490 return ret; 491 492 iwl_mvm_ftm_put_target_common(mvm, peer, target); 493 494 if (vif->bss_conf.assoc && 495 !memcmp(peer->addr, vif->bss_conf.bssid, ETH_ALEN)) { 496 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 497 struct ieee80211_sta *sta; 498 499 rcu_read_lock(); 500 501 sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); 502 if (sta->mfp) 503 FTM_PUT_FLAG(PMF); 504 505 rcu_read_unlock(); 506 507 target->sta_id = mvmvif->ap_sta_id; 508 } else { 509 target->sta_id = IWL_MVM_INVALID_STA; 510 } 511 512 /* 513 * TODO: Beacon interval is currently unknown, so use the common value 514 * of 100 TUs. 515 */ 516 target->beacon_interval = cpu_to_le16(100); 517 return 0; 518 } 519 520 static int iwl_mvm_ftm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *hcmd) 521 { 522 u32 status; 523 int err = iwl_mvm_send_cmd_status(mvm, hcmd, &status); 524 525 if (!err && status) { 526 IWL_ERR(mvm, "FTM range request command failure, status: %u\n", 527 status); 528 err = iwl_ftm_range_request_status_to_err(status); 529 } 530 531 return err; 532 } 533 534 static int iwl_mvm_ftm_start_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 535 struct cfg80211_pmsr_request *req) 536 { 537 struct iwl_tof_range_req_cmd_v5 cmd_v5; 538 struct iwl_host_cmd hcmd = { 539 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 540 .dataflags[0] = IWL_HCMD_DFL_DUP, 541 .data[0] = &cmd_v5, 542 .len[0] = sizeof(cmd_v5), 543 }; 544 u8 i; 545 int err; 546 547 iwl_mvm_ftm_cmd_v5(mvm, vif, &cmd_v5, req); 548 549 for (i = 0; i < cmd_v5.num_of_ap; i++) { 550 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 551 552 err = iwl_mvm_ftm_put_target_v2(mvm, peer, &cmd_v5.ap[i]); 553 if (err) 554 return err; 555 } 556 557 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 558 } 559 560 static int iwl_mvm_ftm_start_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 561 struct cfg80211_pmsr_request *req) 562 { 563 struct iwl_tof_range_req_cmd_v7 cmd_v7; 564 struct iwl_host_cmd hcmd = { 565 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 566 .dataflags[0] = IWL_HCMD_DFL_DUP, 567 .data[0] = &cmd_v7, 568 .len[0] = sizeof(cmd_v7), 569 }; 570 u8 i; 571 int err; 572 573 /* 574 * Versions 7 and 8 has the same structure except from the responders 575 * list, so iwl_mvm_ftm_cmd() can be used for version 7 too. 576 */ 577 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd_v7, req); 578 579 for (i = 0; i < cmd_v7.num_of_ap; i++) { 580 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 581 582 err = iwl_mvm_ftm_put_target_v3(mvm, peer, &cmd_v7.ap[i]); 583 if (err) 584 return err; 585 } 586 587 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 588 } 589 590 static int iwl_mvm_ftm_start_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 591 struct cfg80211_pmsr_request *req) 592 { 593 struct iwl_tof_range_req_cmd_v8 cmd; 594 struct iwl_host_cmd hcmd = { 595 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 596 .dataflags[0] = IWL_HCMD_DFL_DUP, 597 .data[0] = &cmd, 598 .len[0] = sizeof(cmd), 599 }; 600 u8 i; 601 int err; 602 603 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd, req); 604 605 for (i = 0; i < cmd.num_of_ap; i++) { 606 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 607 608 err = iwl_mvm_ftm_put_target_v4(mvm, peer, &cmd.ap[i]); 609 if (err) 610 return err; 611 } 612 613 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 614 } 615 616 static int iwl_mvm_ftm_start_v9(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 617 struct cfg80211_pmsr_request *req) 618 { 619 struct iwl_tof_range_req_cmd_v9 cmd; 620 struct iwl_host_cmd hcmd = { 621 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 622 .dataflags[0] = IWL_HCMD_DFL_DUP, 623 .data[0] = &cmd, 624 .len[0] = sizeof(cmd), 625 }; 626 u8 i; 627 int err; 628 629 iwl_mvm_ftm_cmd_common(mvm, vif, &cmd, req); 630 631 for (i = 0; i < cmd.num_of_ap; i++) { 632 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 633 struct iwl_tof_range_req_ap_entry_v6 *target = &cmd.ap[i]; 634 635 err = iwl_mvm_ftm_put_target(mvm, vif, peer, target); 636 if (err) 637 return err; 638 } 639 640 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 641 } 642 643 static void iter(struct ieee80211_hw *hw, 644 struct ieee80211_vif *vif, 645 struct ieee80211_sta *sta, 646 struct ieee80211_key_conf *key, 647 void *data) 648 { 649 struct iwl_tof_range_req_ap_entry_v6 *target = data; 650 651 if (!sta || memcmp(sta->addr, target->bssid, ETH_ALEN)) 652 return; 653 654 WARN_ON(!sta->mfp); 655 656 if (WARN_ON(key->keylen > sizeof(target->tk))) 657 return; 658 659 memcpy(target->tk, key->key, key->keylen); 660 target->cipher = iwl_mvm_cipher_to_location_cipher(key->cipher); 661 WARN_ON(target->cipher == IWL_LOCATION_CIPHER_INVALID); 662 } 663 664 static void 665 iwl_mvm_ftm_set_secured_ranging(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 666 struct iwl_tof_range_req_ap_entry_v7 *target) 667 { 668 struct iwl_mvm_ftm_pasn_entry *entry; 669 u32 flags = le32_to_cpu(target->initiator_ap_flags); 670 671 if (!(flags & (IWL_INITIATOR_AP_FLAGS_NON_TB | 672 IWL_INITIATOR_AP_FLAGS_TB))) 673 return; 674 675 lockdep_assert_held(&mvm->mutex); 676 677 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) { 678 if (memcmp(entry->addr, target->bssid, sizeof(entry->addr))) 679 continue; 680 681 target->cipher = entry->cipher; 682 memcpy(target->hltk, entry->hltk, sizeof(target->hltk)); 683 684 if (vif->bss_conf.assoc && 685 !memcmp(vif->bss_conf.bssid, target->bssid, 686 sizeof(target->bssid))) 687 ieee80211_iter_keys(mvm->hw, vif, iter, target); 688 else 689 memcpy(target->tk, entry->tk, sizeof(target->tk)); 690 691 memcpy(target->rx_pn, entry->rx_pn, sizeof(target->rx_pn)); 692 memcpy(target->tx_pn, entry->tx_pn, sizeof(target->tx_pn)); 693 694 target->initiator_ap_flags |= 695 cpu_to_le32(IWL_INITIATOR_AP_FLAGS_SECURED); 696 return; 697 } 698 } 699 700 static int 701 iwl_mvm_ftm_put_target_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 702 struct cfg80211_pmsr_request_peer *peer, 703 struct iwl_tof_range_req_ap_entry_v7 *target) 704 { 705 int err = iwl_mvm_ftm_put_target(mvm, vif, peer, (void *)target); 706 if (err) 707 return err; 708 709 iwl_mvm_ftm_set_secured_ranging(mvm, vif, target); 710 return err; 711 } 712 713 static int iwl_mvm_ftm_start_v11(struct iwl_mvm *mvm, 714 struct ieee80211_vif *vif, 715 struct cfg80211_pmsr_request *req) 716 { 717 struct iwl_tof_range_req_cmd_v11 cmd; 718 struct iwl_host_cmd hcmd = { 719 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 720 .dataflags[0] = IWL_HCMD_DFL_DUP, 721 .data[0] = &cmd, 722 .len[0] = sizeof(cmd), 723 }; 724 u8 i; 725 int err; 726 727 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); 728 729 for (i = 0; i < cmd.num_of_ap; i++) { 730 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 731 struct iwl_tof_range_req_ap_entry_v7 *target = &cmd.ap[i]; 732 733 err = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, target); 734 if (err) 735 return err; 736 } 737 738 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 739 } 740 741 static void 742 iwl_mvm_ftm_set_ndp_params(struct iwl_mvm *mvm, 743 struct iwl_tof_range_req_ap_entry_v8 *target) 744 { 745 /* Only 2 STS are supported on Tx */ 746 u32 i2r_max_sts = IWL_MVM_FTM_I2R_MAX_STS > 1 ? 1 : 747 IWL_MVM_FTM_I2R_MAX_STS; 748 749 target->r2i_ndp_params = IWL_MVM_FTM_R2I_MAX_REP | 750 (IWL_MVM_FTM_R2I_MAX_STS << IWL_LOCATION_MAX_STS_POS); 751 target->i2r_ndp_params = IWL_MVM_FTM_I2R_MAX_REP | 752 (i2r_max_sts << IWL_LOCATION_MAX_STS_POS); 753 target->r2i_max_total_ltf = IWL_MVM_FTM_R2I_MAX_TOTAL_LTF; 754 target->i2r_max_total_ltf = IWL_MVM_FTM_I2R_MAX_TOTAL_LTF; 755 } 756 757 static int 758 iwl_mvm_ftm_put_target_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 759 struct cfg80211_pmsr_request_peer *peer, 760 struct iwl_tof_range_req_ap_entry_v8 *target) 761 { 762 u32 flags; 763 int ret = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, (void *)target); 764 765 if (ret) 766 return ret; 767 768 iwl_mvm_ftm_set_ndp_params(mvm, target); 769 770 /* 771 * If secure LTF is turned off, replace the flag with PMF only 772 */ 773 flags = le32_to_cpu(target->initiator_ap_flags); 774 if ((flags & IWL_INITIATOR_AP_FLAGS_SECURED) && 775 !IWL_MVM_FTM_INITIATOR_SECURE_LTF) { 776 flags &= ~IWL_INITIATOR_AP_FLAGS_SECURED; 777 flags |= IWL_INITIATOR_AP_FLAGS_PMF; 778 target->initiator_ap_flags = cpu_to_le32(flags); 779 } 780 781 return 0; 782 } 783 784 static int iwl_mvm_ftm_start_v12(struct iwl_mvm *mvm, 785 struct ieee80211_vif *vif, 786 struct cfg80211_pmsr_request *req) 787 { 788 struct iwl_tof_range_req_cmd_v12 cmd; 789 struct iwl_host_cmd hcmd = { 790 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 791 .dataflags[0] = IWL_HCMD_DFL_DUP, 792 .data[0] = &cmd, 793 .len[0] = sizeof(cmd), 794 }; 795 u8 i; 796 int err; 797 798 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); 799 800 for (i = 0; i < cmd.num_of_ap; i++) { 801 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 802 struct iwl_tof_range_req_ap_entry_v8 *target = &cmd.ap[i]; 803 804 err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, target); 805 if (err) 806 return err; 807 } 808 809 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 810 } 811 812 static int iwl_mvm_ftm_start_v13(struct iwl_mvm *mvm, 813 struct ieee80211_vif *vif, 814 struct cfg80211_pmsr_request *req) 815 { 816 struct iwl_tof_range_req_cmd_v13 cmd; 817 struct iwl_host_cmd hcmd = { 818 .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), 819 .dataflags[0] = IWL_HCMD_DFL_DUP, 820 .data[0] = &cmd, 821 .len[0] = sizeof(cmd), 822 }; 823 u8 i; 824 int err; 825 826 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); 827 828 for (i = 0; i < cmd.num_of_ap; i++) { 829 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 830 struct iwl_tof_range_req_ap_entry_v9 *target = &cmd.ap[i]; 831 832 err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, (void *)target); 833 if (err) 834 return err; 835 836 if (peer->ftm.trigger_based || peer->ftm.non_trigger_based) 837 target->bss_color = peer->ftm.bss_color; 838 839 if (peer->ftm.non_trigger_based) { 840 target->min_time_between_msr = 841 cpu_to_le16(IWL_MVM_FTM_NON_TB_MIN_TIME_BETWEEN_MSR); 842 target->burst_period = 843 cpu_to_le16(IWL_MVM_FTM_NON_TB_MAX_TIME_BETWEEN_MSR); 844 } else { 845 target->min_time_between_msr = cpu_to_le16(0); 846 } 847 848 target->band = 849 iwl_mvm_phy_band_from_nl80211(peer->chandef.chan->band); 850 } 851 852 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 853 } 854 855 int iwl_mvm_ftm_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 856 struct cfg80211_pmsr_request *req) 857 { 858 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 859 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ); 860 int err; 861 862 lockdep_assert_held(&mvm->mutex); 863 864 if (mvm->ftm_initiator.req) 865 return -EBUSY; 866 867 if (new_api) { 868 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LOCATION_GROUP, 869 TOF_RANGE_REQ_CMD, 870 IWL_FW_CMD_VER_UNKNOWN); 871 872 switch (cmd_ver) { 873 case 13: 874 err = iwl_mvm_ftm_start_v13(mvm, vif, req); 875 break; 876 case 12: 877 err = iwl_mvm_ftm_start_v12(mvm, vif, req); 878 break; 879 case 11: 880 err = iwl_mvm_ftm_start_v11(mvm, vif, req); 881 break; 882 case 9: 883 case 10: 884 err = iwl_mvm_ftm_start_v9(mvm, vif, req); 885 break; 886 case 8: 887 err = iwl_mvm_ftm_start_v8(mvm, vif, req); 888 break; 889 default: 890 err = iwl_mvm_ftm_start_v7(mvm, vif, req); 891 break; 892 } 893 } else { 894 err = iwl_mvm_ftm_start_v5(mvm, vif, req); 895 } 896 897 if (!err) { 898 mvm->ftm_initiator.req = req; 899 mvm->ftm_initiator.req_wdev = ieee80211_vif_to_wdev(vif); 900 } 901 902 return err; 903 } 904 905 void iwl_mvm_ftm_abort(struct iwl_mvm *mvm, struct cfg80211_pmsr_request *req) 906 { 907 struct iwl_tof_range_abort_cmd cmd = { 908 .request_id = req->cookie, 909 }; 910 911 lockdep_assert_held(&mvm->mutex); 912 913 if (req != mvm->ftm_initiator.req) 914 return; 915 916 iwl_mvm_ftm_reset(mvm); 917 918 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_RANGE_ABORT_CMD, 919 LOCATION_GROUP, 0), 920 0, sizeof(cmd), &cmd)) 921 IWL_ERR(mvm, "failed to abort FTM process\n"); 922 } 923 924 static int iwl_mvm_ftm_find_peer(struct cfg80211_pmsr_request *req, 925 const u8 *addr) 926 { 927 int i; 928 929 for (i = 0; i < req->n_peers; i++) { 930 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 931 932 if (ether_addr_equal_unaligned(peer->addr, addr)) 933 return i; 934 } 935 936 return -ENOENT; 937 } 938 939 static u64 iwl_mvm_ftm_get_host_time(struct iwl_mvm *mvm, __le32 fw_gp2_ts) 940 { 941 u32 gp2_ts = le32_to_cpu(fw_gp2_ts); 942 u32 curr_gp2, diff; 943 u64 now_from_boot_ns; 944 945 iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2, 946 &now_from_boot_ns, NULL); 947 948 if (curr_gp2 >= gp2_ts) 949 diff = curr_gp2 - gp2_ts; 950 else 951 diff = curr_gp2 + (U32_MAX - gp2_ts + 1); 952 953 return now_from_boot_ns - (u64)diff * 1000; 954 } 955 956 static void iwl_mvm_ftm_get_lci_civic(struct iwl_mvm *mvm, 957 struct cfg80211_pmsr_result *res) 958 { 959 struct iwl_mvm_loc_entry *entry; 960 961 list_for_each_entry(entry, &mvm->ftm_initiator.loc_list, list) { 962 if (!ether_addr_equal_unaligned(res->addr, entry->addr)) 963 continue; 964 965 if (entry->lci_len) { 966 res->ftm.lci_len = entry->lci_len; 967 res->ftm.lci = entry->buf; 968 } 969 970 if (entry->civic_len) { 971 res->ftm.civicloc_len = entry->civic_len; 972 res->ftm.civicloc = entry->buf + entry->lci_len; 973 } 974 975 /* we found the entry we needed */ 976 break; 977 } 978 } 979 980 static int iwl_mvm_ftm_range_resp_valid(struct iwl_mvm *mvm, u8 request_id, 981 u8 num_of_aps) 982 { 983 lockdep_assert_held(&mvm->mutex); 984 985 if (request_id != (u8)mvm->ftm_initiator.req->cookie) { 986 IWL_ERR(mvm, "Request ID mismatch, got %u, active %u\n", 987 request_id, (u8)mvm->ftm_initiator.req->cookie); 988 return -EINVAL; 989 } 990 991 if (num_of_aps > mvm->ftm_initiator.req->n_peers) { 992 IWL_ERR(mvm, "FTM range response invalid\n"); 993 return -EINVAL; 994 } 995 996 return 0; 997 } 998 999 static void iwl_mvm_ftm_rtt_smoothing(struct iwl_mvm *mvm, 1000 struct cfg80211_pmsr_result *res) 1001 { 1002 struct iwl_mvm_smooth_entry *resp; 1003 s64 rtt_avg, rtt = res->ftm.rtt_avg; 1004 u32 undershoot, overshoot; 1005 u8 alpha; 1006 bool found; 1007 1008 if (!IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH) 1009 return; 1010 1011 WARN_ON(rtt < 0); 1012 1013 if (res->status != NL80211_PMSR_STATUS_SUCCESS) { 1014 IWL_DEBUG_INFO(mvm, 1015 ": %pM: ignore failed measurement. Status=%u\n", 1016 res->addr, res->status); 1017 return; 1018 } 1019 1020 found = false; 1021 list_for_each_entry(resp, &mvm->ftm_initiator.smooth.resp, list) { 1022 if (!memcmp(res->addr, resp->addr, ETH_ALEN)) { 1023 found = true; 1024 break; 1025 } 1026 } 1027 1028 if (!found) { 1029 resp = kzalloc(sizeof(*resp), GFP_KERNEL); 1030 if (!resp) 1031 return; 1032 1033 memcpy(resp->addr, res->addr, ETH_ALEN); 1034 list_add_tail(&resp->list, &mvm->ftm_initiator.smooth.resp); 1035 1036 resp->rtt_avg = rtt; 1037 1038 IWL_DEBUG_INFO(mvm, "new: %pM: rtt_avg=%lld\n", 1039 resp->addr, resp->rtt_avg); 1040 goto update_time; 1041 } 1042 1043 if (res->host_time - resp->host_time > 1044 IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * 1000000000) { 1045 resp->rtt_avg = rtt; 1046 1047 IWL_DEBUG_INFO(mvm, "expired: %pM: rtt_avg=%lld\n", 1048 resp->addr, resp->rtt_avg); 1049 goto update_time; 1050 } 1051 1052 /* Smooth the results based on the tracked RTT average */ 1053 undershoot = IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT; 1054 overshoot = IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT; 1055 alpha = IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA; 1056 1057 rtt_avg = (alpha * rtt + (100 - alpha) * resp->rtt_avg) / 100; 1058 1059 IWL_DEBUG_INFO(mvm, 1060 "%pM: prev rtt_avg=%lld, new rtt_avg=%lld, rtt=%lld\n", 1061 resp->addr, resp->rtt_avg, rtt_avg, rtt); 1062 1063 /* 1064 * update the responder's average RTT results regardless of 1065 * the under/over shoot logic below 1066 */ 1067 resp->rtt_avg = rtt_avg; 1068 1069 /* smooth the results */ 1070 if (rtt_avg > rtt && (rtt_avg - rtt) > undershoot) { 1071 res->ftm.rtt_avg = rtt_avg; 1072 1073 IWL_DEBUG_INFO(mvm, 1074 "undershoot: val=%lld\n", 1075 (rtt_avg - rtt)); 1076 } else if (rtt_avg < rtt && (rtt - rtt_avg) > 1077 overshoot) { 1078 res->ftm.rtt_avg = rtt_avg; 1079 IWL_DEBUG_INFO(mvm, 1080 "overshoot: val=%lld\n", 1081 (rtt - rtt_avg)); 1082 } 1083 1084 update_time: 1085 resp->host_time = res->host_time; 1086 } 1087 1088 static void iwl_mvm_debug_range_resp(struct iwl_mvm *mvm, u8 index, 1089 struct cfg80211_pmsr_result *res) 1090 { 1091 s64 rtt_avg = div_s64(res->ftm.rtt_avg * 100, 6666); 1092 1093 IWL_DEBUG_INFO(mvm, "entry %d\n", index); 1094 IWL_DEBUG_INFO(mvm, "\tstatus: %d\n", res->status); 1095 IWL_DEBUG_INFO(mvm, "\tBSSID: %pM\n", res->addr); 1096 IWL_DEBUG_INFO(mvm, "\thost time: %llu\n", res->host_time); 1097 IWL_DEBUG_INFO(mvm, "\tburst index: %hhu\n", res->ftm.burst_index); 1098 IWL_DEBUG_INFO(mvm, "\tsuccess num: %u\n", res->ftm.num_ftmr_successes); 1099 IWL_DEBUG_INFO(mvm, "\trssi: %d\n", res->ftm.rssi_avg); 1100 IWL_DEBUG_INFO(mvm, "\trssi spread: %hhu\n", res->ftm.rssi_spread); 1101 IWL_DEBUG_INFO(mvm, "\trtt: %lld\n", res->ftm.rtt_avg); 1102 IWL_DEBUG_INFO(mvm, "\trtt var: %llu\n", res->ftm.rtt_variance); 1103 IWL_DEBUG_INFO(mvm, "\trtt spread: %llu\n", res->ftm.rtt_spread); 1104 IWL_DEBUG_INFO(mvm, "\tdistance: %lld\n", rtt_avg); 1105 } 1106 1107 static void 1108 iwl_mvm_ftm_pasn_update_pn(struct iwl_mvm *mvm, 1109 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap) 1110 { 1111 struct iwl_mvm_ftm_pasn_entry *entry; 1112 1113 lockdep_assert_held(&mvm->mutex); 1114 1115 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) { 1116 if (memcmp(fw_ap->bssid, entry->addr, sizeof(entry->addr))) 1117 continue; 1118 1119 memcpy(entry->rx_pn, fw_ap->rx_pn, sizeof(entry->rx_pn)); 1120 memcpy(entry->tx_pn, fw_ap->tx_pn, sizeof(entry->tx_pn)); 1121 return; 1122 } 1123 } 1124 1125 static u8 iwl_mvm_ftm_get_range_resp_ver(struct iwl_mvm *mvm) 1126 { 1127 if (!fw_has_api(&mvm->fw->ucode_capa, 1128 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ)) 1129 return 5; 1130 1131 /* Starting from version 8, the FW advertises the version */ 1132 if (mvm->cmd_ver.range_resp >= 8) 1133 return mvm->cmd_ver.range_resp; 1134 else if (fw_has_api(&mvm->fw->ucode_capa, 1135 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY)) 1136 return 7; 1137 1138 /* The first version of the new range request API */ 1139 return 6; 1140 } 1141 1142 static bool iwl_mvm_ftm_resp_size_validation(u8 ver, unsigned int pkt_len) 1143 { 1144 switch (ver) { 1145 case 8: 1146 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v8); 1147 case 7: 1148 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v7); 1149 case 6: 1150 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v6); 1151 case 5: 1152 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v5); 1153 default: 1154 WARN_ONCE(1, "FTM: unsupported range response version %u", ver); 1155 return false; 1156 } 1157 } 1158 1159 void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 1160 { 1161 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1162 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1163 struct iwl_tof_range_rsp_ntfy_v5 *fw_resp_v5 = (void *)pkt->data; 1164 struct iwl_tof_range_rsp_ntfy_v6 *fw_resp_v6 = (void *)pkt->data; 1165 struct iwl_tof_range_rsp_ntfy_v7 *fw_resp_v7 = (void *)pkt->data; 1166 struct iwl_tof_range_rsp_ntfy_v8 *fw_resp_v8 = (void *)pkt->data; 1167 int i; 1168 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 1169 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ); 1170 u8 num_of_aps, last_in_batch; 1171 u8 notif_ver = iwl_mvm_ftm_get_range_resp_ver(mvm); 1172 1173 lockdep_assert_held(&mvm->mutex); 1174 1175 if (!mvm->ftm_initiator.req) { 1176 return; 1177 } 1178 1179 if (unlikely(!iwl_mvm_ftm_resp_size_validation(notif_ver, pkt_len))) 1180 return; 1181 1182 if (new_api) { 1183 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v8->request_id, 1184 fw_resp_v8->num_of_aps)) 1185 return; 1186 1187 num_of_aps = fw_resp_v8->num_of_aps; 1188 last_in_batch = fw_resp_v8->last_report; 1189 } else { 1190 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v5->request_id, 1191 fw_resp_v5->num_of_aps)) 1192 return; 1193 1194 num_of_aps = fw_resp_v5->num_of_aps; 1195 last_in_batch = fw_resp_v5->last_in_batch; 1196 } 1197 1198 IWL_DEBUG_INFO(mvm, "Range response received\n"); 1199 IWL_DEBUG_INFO(mvm, "request id: %lld, num of entries: %hhu\n", 1200 mvm->ftm_initiator.req->cookie, num_of_aps); 1201 1202 for (i = 0; i < num_of_aps && i < IWL_MVM_TOF_MAX_APS; i++) { 1203 struct cfg80211_pmsr_result result = {}; 1204 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap; 1205 int peer_idx; 1206 1207 if (new_api) { 1208 if (notif_ver == 8) { 1209 fw_ap = &fw_resp_v8->ap[i]; 1210 iwl_mvm_ftm_pasn_update_pn(mvm, fw_ap); 1211 } else if (notif_ver == 7) { 1212 fw_ap = (void *)&fw_resp_v7->ap[i]; 1213 } else { 1214 fw_ap = (void *)&fw_resp_v6->ap[i]; 1215 } 1216 1217 result.final = fw_ap->last_burst; 1218 result.ap_tsf = le32_to_cpu(fw_ap->start_tsf); 1219 result.ap_tsf_valid = 1; 1220 } else { 1221 /* the first part is the same for old and new APIs */ 1222 fw_ap = (void *)&fw_resp_v5->ap[i]; 1223 /* 1224 * FIXME: the firmware needs to report this, we don't 1225 * even know the number of bursts the responder picked 1226 * (if we asked it to) 1227 */ 1228 result.final = 0; 1229 } 1230 1231 peer_idx = iwl_mvm_ftm_find_peer(mvm->ftm_initiator.req, 1232 fw_ap->bssid); 1233 if (peer_idx < 0) { 1234 IWL_WARN(mvm, 1235 "Unknown address (%pM, target #%d) in FTM response\n", 1236 fw_ap->bssid, i); 1237 continue; 1238 } 1239 1240 switch (fw_ap->measure_status) { 1241 case IWL_TOF_ENTRY_SUCCESS: 1242 result.status = NL80211_PMSR_STATUS_SUCCESS; 1243 break; 1244 case IWL_TOF_ENTRY_TIMING_MEASURE_TIMEOUT: 1245 result.status = NL80211_PMSR_STATUS_TIMEOUT; 1246 break; 1247 case IWL_TOF_ENTRY_NO_RESPONSE: 1248 result.status = NL80211_PMSR_STATUS_FAILURE; 1249 result.ftm.failure_reason = 1250 NL80211_PMSR_FTM_FAILURE_NO_RESPONSE; 1251 break; 1252 case IWL_TOF_ENTRY_REQUEST_REJECTED: 1253 result.status = NL80211_PMSR_STATUS_FAILURE; 1254 result.ftm.failure_reason = 1255 NL80211_PMSR_FTM_FAILURE_PEER_BUSY; 1256 result.ftm.busy_retry_time = fw_ap->refusal_period; 1257 break; 1258 default: 1259 result.status = NL80211_PMSR_STATUS_FAILURE; 1260 result.ftm.failure_reason = 1261 NL80211_PMSR_FTM_FAILURE_UNSPECIFIED; 1262 break; 1263 } 1264 memcpy(result.addr, fw_ap->bssid, ETH_ALEN); 1265 result.host_time = iwl_mvm_ftm_get_host_time(mvm, 1266 fw_ap->timestamp); 1267 result.type = NL80211_PMSR_TYPE_FTM; 1268 result.ftm.burst_index = mvm->ftm_initiator.responses[peer_idx]; 1269 mvm->ftm_initiator.responses[peer_idx]++; 1270 result.ftm.rssi_avg = fw_ap->rssi; 1271 result.ftm.rssi_avg_valid = 1; 1272 result.ftm.rssi_spread = fw_ap->rssi_spread; 1273 result.ftm.rssi_spread_valid = 1; 1274 result.ftm.rtt_avg = (s32)le32_to_cpu(fw_ap->rtt); 1275 result.ftm.rtt_avg_valid = 1; 1276 result.ftm.rtt_variance = le32_to_cpu(fw_ap->rtt_variance); 1277 result.ftm.rtt_variance_valid = 1; 1278 result.ftm.rtt_spread = le32_to_cpu(fw_ap->rtt_spread); 1279 result.ftm.rtt_spread_valid = 1; 1280 1281 iwl_mvm_ftm_get_lci_civic(mvm, &result); 1282 1283 iwl_mvm_ftm_rtt_smoothing(mvm, &result); 1284 1285 cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev, 1286 mvm->ftm_initiator.req, 1287 &result, GFP_KERNEL); 1288 1289 if (fw_has_api(&mvm->fw->ucode_capa, 1290 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY)) 1291 IWL_DEBUG_INFO(mvm, "RTT confidence: %hhu\n", 1292 fw_ap->rttConfidence); 1293 1294 iwl_mvm_debug_range_resp(mvm, i, &result); 1295 } 1296 1297 if (last_in_batch) { 1298 cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev, 1299 mvm->ftm_initiator.req, 1300 GFP_KERNEL); 1301 iwl_mvm_ftm_reset(mvm); 1302 } 1303 } 1304 1305 void iwl_mvm_ftm_lc_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 1306 { 1307 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1308 const struct ieee80211_mgmt *mgmt = (void *)pkt->data; 1309 size_t len = iwl_rx_packet_payload_len(pkt); 1310 struct iwl_mvm_loc_entry *entry; 1311 const u8 *ies, *lci, *civic, *msr_ie; 1312 size_t ies_len, lci_len = 0, civic_len = 0; 1313 size_t baselen = IEEE80211_MIN_ACTION_SIZE + 1314 sizeof(mgmt->u.action.u.ftm); 1315 static const u8 rprt_type_lci = IEEE80211_SPCT_MSR_RPRT_TYPE_LCI; 1316 static const u8 rprt_type_civic = IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC; 1317 1318 if (len <= baselen) 1319 return; 1320 1321 lockdep_assert_held(&mvm->mutex); 1322 1323 ies = mgmt->u.action.u.ftm.variable; 1324 ies_len = len - baselen; 1325 1326 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len, 1327 &rprt_type_lci, 1, 4); 1328 if (msr_ie) { 1329 lci = msr_ie + 2; 1330 lci_len = msr_ie[1]; 1331 } 1332 1333 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len, 1334 &rprt_type_civic, 1, 4); 1335 if (msr_ie) { 1336 civic = msr_ie + 2; 1337 civic_len = msr_ie[1]; 1338 } 1339 1340 entry = kmalloc(sizeof(*entry) + lci_len + civic_len, GFP_KERNEL); 1341 if (!entry) 1342 return; 1343 1344 memcpy(entry->addr, mgmt->bssid, ETH_ALEN); 1345 1346 entry->lci_len = lci_len; 1347 if (lci_len) 1348 memcpy(entry->buf, lci, lci_len); 1349 1350 entry->civic_len = civic_len; 1351 if (civic_len) 1352 memcpy(entry->buf + lci_len, civic, civic_len); 1353 1354 list_add_tail(&entry->list, &mvm->ftm_initiator.loc_list); 1355 } 1356