1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2015-2017 Intel Deutschland GmbH 4 * Copyright (C) 2018-2022 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 enum iwl_mvm_pasn_flags { 29 IWL_MVM_PASN_FLAG_HAS_HLTK = BIT(0), 30 }; 31 32 struct iwl_mvm_ftm_pasn_entry { 33 struct list_head list; 34 u8 addr[ETH_ALEN]; 35 u8 hltk[HLTK_11AZ_LEN]; 36 u8 tk[TK_11AZ_LEN]; 37 u8 cipher; 38 u8 tx_pn[IEEE80211_CCMP_PN_LEN]; 39 u8 rx_pn[IEEE80211_CCMP_PN_LEN]; 40 u32 flags; 41 }; 42 43 int iwl_mvm_ftm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 44 u8 *addr, u32 cipher, u8 *tk, u32 tk_len, 45 u8 *hltk, u32 hltk_len) 46 { 47 struct iwl_mvm_ftm_pasn_entry *pasn = kzalloc(sizeof(*pasn), 48 GFP_KERNEL); 49 u32 expected_tk_len; 50 51 lockdep_assert_held(&mvm->mutex); 52 53 if (!pasn) 54 return -ENOBUFS; 55 56 pasn->cipher = iwl_mvm_cipher_to_location_cipher(cipher); 57 58 switch (pasn->cipher) { 59 case IWL_LOCATION_CIPHER_CCMP_128: 60 case IWL_LOCATION_CIPHER_GCMP_128: 61 expected_tk_len = WLAN_KEY_LEN_CCMP; 62 break; 63 case IWL_LOCATION_CIPHER_GCMP_256: 64 expected_tk_len = WLAN_KEY_LEN_GCMP_256; 65 break; 66 default: 67 goto out; 68 } 69 70 /* 71 * If associated to this AP and already have security context, 72 * the TK is already configured for this station, so it 73 * shouldn't be set again here. 74 */ 75 if (vif->cfg.assoc) { 76 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 77 struct ieee80211_bss_conf *link_conf; 78 unsigned int link_id; 79 struct ieee80211_sta *sta; 80 u8 sta_id; 81 82 rcu_read_lock(); 83 for_each_vif_active_link(vif, link_conf, link_id) { 84 if (memcmp(addr, link_conf->bssid, ETH_ALEN)) 85 continue; 86 87 sta_id = mvmvif->link[link_id]->ap_sta_id; 88 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 89 if (!IS_ERR_OR_NULL(sta) && sta->mfp) 90 expected_tk_len = 0; 91 break; 92 } 93 rcu_read_unlock(); 94 } 95 96 if (tk_len != expected_tk_len || 97 (hltk_len && hltk_len != sizeof(pasn->hltk))) { 98 IWL_ERR(mvm, "Invalid key length: tk_len=%u hltk_len=%u\n", 99 tk_len, hltk_len); 100 goto out; 101 } 102 103 if (!expected_tk_len && !hltk_len) { 104 IWL_ERR(mvm, "TK and HLTK not set\n"); 105 goto out; 106 } 107 108 memcpy(pasn->addr, addr, sizeof(pasn->addr)); 109 110 if (hltk_len) { 111 memcpy(pasn->hltk, hltk, sizeof(pasn->hltk)); 112 pasn->flags |= IWL_MVM_PASN_FLAG_HAS_HLTK; 113 } 114 115 if (tk && tk_len) 116 memcpy(pasn->tk, tk, sizeof(pasn->tk)); 117 118 list_add_tail(&pasn->list, &mvm->ftm_initiator.pasn_list); 119 return 0; 120 out: 121 kfree(pasn); 122 return -EINVAL; 123 } 124 125 void iwl_mvm_ftm_remove_pasn_sta(struct iwl_mvm *mvm, u8 *addr) 126 { 127 struct iwl_mvm_ftm_pasn_entry *entry, *prev; 128 129 lockdep_assert_held(&mvm->mutex); 130 131 list_for_each_entry_safe(entry, prev, &mvm->ftm_initiator.pasn_list, 132 list) { 133 if (memcmp(entry->addr, addr, sizeof(entry->addr))) 134 continue; 135 136 list_del(&entry->list); 137 kfree(entry); 138 return; 139 } 140 } 141 142 static void iwl_mvm_ftm_reset(struct iwl_mvm *mvm) 143 { 144 struct iwl_mvm_loc_entry *e, *t; 145 146 mvm->ftm_initiator.req = NULL; 147 mvm->ftm_initiator.req_wdev = NULL; 148 memset(mvm->ftm_initiator.responses, 0, 149 sizeof(mvm->ftm_initiator.responses)); 150 151 list_for_each_entry_safe(e, t, &mvm->ftm_initiator.loc_list, list) { 152 list_del(&e->list); 153 kfree(e); 154 } 155 } 156 157 void iwl_mvm_ftm_restart(struct iwl_mvm *mvm) 158 { 159 struct cfg80211_pmsr_result result = { 160 .status = NL80211_PMSR_STATUS_FAILURE, 161 .final = 1, 162 .host_time = ktime_get_boottime_ns(), 163 .type = NL80211_PMSR_TYPE_FTM, 164 }; 165 int i; 166 167 lockdep_assert_held(&mvm->mutex); 168 169 if (!mvm->ftm_initiator.req) 170 return; 171 172 for (i = 0; i < mvm->ftm_initiator.req->n_peers; i++) { 173 memcpy(result.addr, mvm->ftm_initiator.req->peers[i].addr, 174 ETH_ALEN); 175 result.ftm.burst_index = mvm->ftm_initiator.responses[i]; 176 177 cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev, 178 mvm->ftm_initiator.req, 179 &result, GFP_KERNEL); 180 } 181 182 cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev, 183 mvm->ftm_initiator.req, GFP_KERNEL); 184 iwl_mvm_ftm_reset(mvm); 185 } 186 187 void iwl_mvm_ftm_initiator_smooth_config(struct iwl_mvm *mvm) 188 { 189 INIT_LIST_HEAD(&mvm->ftm_initiator.smooth.resp); 190 191 IWL_DEBUG_INFO(mvm, 192 "enable=%u, alpha=%u, age_jiffies=%u, thresh=(%u:%u)\n", 193 IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH, 194 IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA, 195 IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * HZ, 196 IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT, 197 IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT); 198 } 199 200 void iwl_mvm_ftm_initiator_smooth_stop(struct iwl_mvm *mvm) 201 { 202 struct iwl_mvm_smooth_entry *se, *st; 203 204 list_for_each_entry_safe(se, st, &mvm->ftm_initiator.smooth.resp, 205 list) { 206 list_del(&se->list); 207 kfree(se); 208 } 209 } 210 211 static int 212 iwl_ftm_range_request_status_to_err(enum iwl_tof_range_request_status s) 213 { 214 switch (s) { 215 case IWL_TOF_RANGE_REQUEST_STATUS_SUCCESS: 216 return 0; 217 case IWL_TOF_RANGE_REQUEST_STATUS_BUSY: 218 return -EBUSY; 219 default: 220 WARN_ON_ONCE(1); 221 return -EIO; 222 } 223 } 224 225 static void iwl_mvm_ftm_cmd_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 226 struct iwl_tof_range_req_cmd_v5 *cmd, 227 struct cfg80211_pmsr_request *req) 228 { 229 int i; 230 231 cmd->request_id = req->cookie; 232 cmd->num_of_ap = req->n_peers; 233 234 /* use maximum for "no timeout" or bigger than what we can do */ 235 if (!req->timeout || req->timeout > 255 * 100) 236 cmd->req_timeout = 255; 237 else 238 cmd->req_timeout = DIV_ROUND_UP(req->timeout, 100); 239 240 /* 241 * We treat it always as random, since if not we'll 242 * have filled our local address there instead. 243 */ 244 cmd->macaddr_random = 1; 245 memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN); 246 for (i = 0; i < ETH_ALEN; i++) 247 cmd->macaddr_mask[i] = ~req->mac_addr_mask[i]; 248 249 if (vif->cfg.assoc) 250 memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN); 251 else 252 eth_broadcast_addr(cmd->range_req_bssid); 253 } 254 255 static void iwl_mvm_ftm_cmd_common(struct iwl_mvm *mvm, 256 struct ieee80211_vif *vif, 257 struct iwl_tof_range_req_cmd_v9 *cmd, 258 struct cfg80211_pmsr_request *req) 259 { 260 int i; 261 262 cmd->initiator_flags = 263 cpu_to_le32(IWL_TOF_INITIATOR_FLAGS_MACADDR_RANDOM | 264 IWL_TOF_INITIATOR_FLAGS_NON_ASAP_SUPPORT); 265 cmd->request_id = req->cookie; 266 cmd->num_of_ap = req->n_peers; 267 268 /* 269 * Use a large value for "no timeout". Don't use the maximum value 270 * because of fw limitations. 271 */ 272 if (req->timeout) 273 cmd->req_timeout_ms = cpu_to_le32(req->timeout); 274 else 275 cmd->req_timeout_ms = cpu_to_le32(0xfffff); 276 277 memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN); 278 for (i = 0; i < ETH_ALEN; i++) 279 cmd->macaddr_mask[i] = ~req->mac_addr_mask[i]; 280 281 if (vif->cfg.assoc) { 282 memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN); 283 284 /* AP's TSF is only relevant if associated */ 285 for (i = 0; i < req->n_peers; i++) { 286 if (req->peers[i].report_ap_tsf) { 287 struct iwl_mvm_vif *mvmvif = 288 iwl_mvm_vif_from_mac80211(vif); 289 290 cmd->tsf_mac_id = cpu_to_le32(mvmvif->id); 291 return; 292 } 293 } 294 } else { 295 eth_broadcast_addr(cmd->range_req_bssid); 296 } 297 298 /* Don't report AP's TSF */ 299 cmd->tsf_mac_id = cpu_to_le32(0xff); 300 } 301 302 static void iwl_mvm_ftm_cmd_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 303 struct iwl_tof_range_req_cmd_v8 *cmd, 304 struct cfg80211_pmsr_request *req) 305 { 306 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)cmd, req); 307 } 308 309 static int 310 iwl_mvm_ftm_target_chandef_v1(struct iwl_mvm *mvm, 311 struct cfg80211_pmsr_request_peer *peer, 312 u8 *channel, u8 *bandwidth, 313 u8 *ctrl_ch_position) 314 { 315 u32 freq = peer->chandef.chan->center_freq; 316 317 *channel = ieee80211_frequency_to_channel(freq); 318 319 switch (peer->chandef.width) { 320 case NL80211_CHAN_WIDTH_20_NOHT: 321 *bandwidth = IWL_TOF_BW_20_LEGACY; 322 break; 323 case NL80211_CHAN_WIDTH_20: 324 *bandwidth = IWL_TOF_BW_20_HT; 325 break; 326 case NL80211_CHAN_WIDTH_40: 327 *bandwidth = IWL_TOF_BW_40; 328 break; 329 case NL80211_CHAN_WIDTH_80: 330 *bandwidth = IWL_TOF_BW_80; 331 break; 332 default: 333 IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n", 334 peer->chandef.width); 335 return -EINVAL; 336 } 337 338 *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ? 339 iwl_mvm_get_ctrl_pos(&peer->chandef) : 0; 340 341 return 0; 342 } 343 344 static int 345 iwl_mvm_ftm_target_chandef_v2(struct iwl_mvm *mvm, 346 struct cfg80211_pmsr_request_peer *peer, 347 u8 *channel, u8 *format_bw, 348 u8 *ctrl_ch_position) 349 { 350 u32 freq = peer->chandef.chan->center_freq; 351 u8 cmd_ver; 352 353 *channel = ieee80211_frequency_to_channel(freq); 354 355 switch (peer->chandef.width) { 356 case NL80211_CHAN_WIDTH_20_NOHT: 357 *format_bw = IWL_LOCATION_FRAME_FORMAT_LEGACY; 358 *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS; 359 break; 360 case NL80211_CHAN_WIDTH_20: 361 *format_bw = IWL_LOCATION_FRAME_FORMAT_HT; 362 *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS; 363 break; 364 case NL80211_CHAN_WIDTH_40: 365 *format_bw = IWL_LOCATION_FRAME_FORMAT_HT; 366 *format_bw |= IWL_LOCATION_BW_40MHZ << LOCATION_BW_POS; 367 break; 368 case NL80211_CHAN_WIDTH_80: 369 *format_bw = IWL_LOCATION_FRAME_FORMAT_VHT; 370 *format_bw |= IWL_LOCATION_BW_80MHZ << LOCATION_BW_POS; 371 break; 372 case NL80211_CHAN_WIDTH_160: 373 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 374 WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD), 375 IWL_FW_CMD_VER_UNKNOWN); 376 377 if (cmd_ver >= 13) { 378 *format_bw = IWL_LOCATION_FRAME_FORMAT_HE; 379 *format_bw |= IWL_LOCATION_BW_160MHZ << LOCATION_BW_POS; 380 break; 381 } 382 fallthrough; 383 default: 384 IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n", 385 peer->chandef.width); 386 return -EINVAL; 387 } 388 389 /* non EDCA based measurement must use HE preamble */ 390 if (peer->ftm.trigger_based || peer->ftm.non_trigger_based) 391 *format_bw |= IWL_LOCATION_FRAME_FORMAT_HE; 392 393 *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ? 394 iwl_mvm_get_ctrl_pos(&peer->chandef) : 0; 395 396 return 0; 397 } 398 399 static int 400 iwl_mvm_ftm_put_target_v2(struct iwl_mvm *mvm, 401 struct cfg80211_pmsr_request_peer *peer, 402 struct iwl_tof_range_req_ap_entry_v2 *target) 403 { 404 int ret; 405 406 ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num, 407 &target->bandwidth, 408 &target->ctrl_ch_position); 409 if (ret) 410 return ret; 411 412 memcpy(target->bssid, peer->addr, ETH_ALEN); 413 target->burst_period = 414 cpu_to_le16(peer->ftm.burst_period); 415 target->samples_per_burst = peer->ftm.ftms_per_burst; 416 target->num_of_bursts = peer->ftm.num_bursts_exp; 417 target->measure_type = 0; /* regular two-sided FTM */ 418 target->retries_per_sample = peer->ftm.ftmr_retries; 419 target->asap_mode = peer->ftm.asap; 420 target->enable_dyn_ack = IWL_MVM_FTM_INITIATOR_DYNACK; 421 422 if (peer->ftm.request_lci) 423 target->location_req |= IWL_TOF_LOC_LCI; 424 if (peer->ftm.request_civicloc) 425 target->location_req |= IWL_TOF_LOC_CIVIC; 426 427 target->algo_type = IWL_MVM_FTM_INITIATOR_ALGO; 428 429 return 0; 430 } 431 432 #define FTM_PUT_FLAG(flag) (target->initiator_ap_flags |= \ 433 cpu_to_le32(IWL_INITIATOR_AP_FLAGS_##flag)) 434 435 static void 436 iwl_mvm_ftm_put_target_common(struct iwl_mvm *mvm, 437 struct cfg80211_pmsr_request_peer *peer, 438 struct iwl_tof_range_req_ap_entry_v6 *target) 439 { 440 memcpy(target->bssid, peer->addr, ETH_ALEN); 441 target->burst_period = 442 cpu_to_le16(peer->ftm.burst_period); 443 target->samples_per_burst = peer->ftm.ftms_per_burst; 444 target->num_of_bursts = peer->ftm.num_bursts_exp; 445 target->ftmr_max_retries = peer->ftm.ftmr_retries; 446 target->initiator_ap_flags = cpu_to_le32(0); 447 448 if (peer->ftm.asap) 449 FTM_PUT_FLAG(ASAP); 450 451 if (peer->ftm.request_lci) 452 FTM_PUT_FLAG(LCI_REQUEST); 453 454 if (peer->ftm.request_civicloc) 455 FTM_PUT_FLAG(CIVIC_REQUEST); 456 457 if (IWL_MVM_FTM_INITIATOR_DYNACK) 458 FTM_PUT_FLAG(DYN_ACK); 459 460 if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_LINEAR_REG) 461 FTM_PUT_FLAG(ALGO_LR); 462 else if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_FFT) 463 FTM_PUT_FLAG(ALGO_FFT); 464 465 if (peer->ftm.trigger_based) 466 FTM_PUT_FLAG(TB); 467 else if (peer->ftm.non_trigger_based) 468 FTM_PUT_FLAG(NON_TB); 469 470 if ((peer->ftm.trigger_based || peer->ftm.non_trigger_based) && 471 peer->ftm.lmr_feedback) 472 FTM_PUT_FLAG(LMR_FEEDBACK); 473 } 474 475 static int 476 iwl_mvm_ftm_put_target_v3(struct iwl_mvm *mvm, 477 struct cfg80211_pmsr_request_peer *peer, 478 struct iwl_tof_range_req_ap_entry_v3 *target) 479 { 480 int ret; 481 482 ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num, 483 &target->bandwidth, 484 &target->ctrl_ch_position); 485 if (ret) 486 return ret; 487 488 /* 489 * Versions 3 and 4 has some common fields, so 490 * iwl_mvm_ftm_put_target_common() can be used for version 7 too. 491 */ 492 iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target); 493 494 return 0; 495 } 496 497 static int 498 iwl_mvm_ftm_put_target_v4(struct iwl_mvm *mvm, 499 struct cfg80211_pmsr_request_peer *peer, 500 struct iwl_tof_range_req_ap_entry_v4 *target) 501 { 502 int ret; 503 504 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num, 505 &target->format_bw, 506 &target->ctrl_ch_position); 507 if (ret) 508 return ret; 509 510 iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target); 511 512 return 0; 513 } 514 515 static int 516 iwl_mvm_ftm_put_target(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 517 struct cfg80211_pmsr_request_peer *peer, 518 struct iwl_tof_range_req_ap_entry_v6 *target) 519 { 520 int ret; 521 522 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num, 523 &target->format_bw, 524 &target->ctrl_ch_position); 525 if (ret) 526 return ret; 527 528 iwl_mvm_ftm_put_target_common(mvm, peer, target); 529 530 if (vif->cfg.assoc) { 531 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 532 struct ieee80211_sta *sta; 533 struct ieee80211_bss_conf *link_conf; 534 unsigned int link_id; 535 536 rcu_read_lock(); 537 for_each_vif_active_link(vif, link_conf, link_id) { 538 if (memcmp(peer->addr, link_conf->bssid, ETH_ALEN)) 539 continue; 540 541 target->sta_id = mvmvif->link[link_id]->ap_sta_id; 542 sta = rcu_dereference(mvm->fw_id_to_mac_id[target->sta_id]); 543 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 544 rcu_read_unlock(); 545 return PTR_ERR_OR_ZERO(sta); 546 } 547 548 if (sta->mfp && (peer->ftm.trigger_based || 549 peer->ftm.non_trigger_based)) 550 FTM_PUT_FLAG(PMF); 551 break; 552 } 553 rcu_read_unlock(); 554 } else { 555 target->sta_id = IWL_MVM_INVALID_STA; 556 } 557 558 /* 559 * TODO: Beacon interval is currently unknown, so use the common value 560 * of 100 TUs. 561 */ 562 target->beacon_interval = cpu_to_le16(100); 563 return 0; 564 } 565 566 static int iwl_mvm_ftm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *hcmd) 567 { 568 u32 status; 569 int err = iwl_mvm_send_cmd_status(mvm, hcmd, &status); 570 571 if (!err && status) { 572 IWL_ERR(mvm, "FTM range request command failure, status: %u\n", 573 status); 574 err = iwl_ftm_range_request_status_to_err(status); 575 } 576 577 return err; 578 } 579 580 static int iwl_mvm_ftm_start_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 581 struct cfg80211_pmsr_request *req) 582 { 583 struct iwl_tof_range_req_cmd_v5 cmd_v5; 584 struct iwl_host_cmd hcmd = { 585 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD), 586 .dataflags[0] = IWL_HCMD_DFL_DUP, 587 .data[0] = &cmd_v5, 588 .len[0] = sizeof(cmd_v5), 589 }; 590 u8 i; 591 int err; 592 593 iwl_mvm_ftm_cmd_v5(mvm, vif, &cmd_v5, req); 594 595 for (i = 0; i < cmd_v5.num_of_ap; i++) { 596 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 597 598 err = iwl_mvm_ftm_put_target_v2(mvm, peer, &cmd_v5.ap[i]); 599 if (err) 600 return err; 601 } 602 603 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 604 } 605 606 static int iwl_mvm_ftm_start_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 607 struct cfg80211_pmsr_request *req) 608 { 609 struct iwl_tof_range_req_cmd_v7 cmd_v7; 610 struct iwl_host_cmd hcmd = { 611 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD), 612 .dataflags[0] = IWL_HCMD_DFL_DUP, 613 .data[0] = &cmd_v7, 614 .len[0] = sizeof(cmd_v7), 615 }; 616 u8 i; 617 int err; 618 619 /* 620 * Versions 7 and 8 has the same structure except from the responders 621 * list, so iwl_mvm_ftm_cmd() can be used for version 7 too. 622 */ 623 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd_v7, req); 624 625 for (i = 0; i < cmd_v7.num_of_ap; i++) { 626 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 627 628 err = iwl_mvm_ftm_put_target_v3(mvm, peer, &cmd_v7.ap[i]); 629 if (err) 630 return err; 631 } 632 633 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 634 } 635 636 static int iwl_mvm_ftm_start_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 637 struct cfg80211_pmsr_request *req) 638 { 639 struct iwl_tof_range_req_cmd_v8 cmd; 640 struct iwl_host_cmd hcmd = { 641 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD), 642 .dataflags[0] = IWL_HCMD_DFL_DUP, 643 .data[0] = &cmd, 644 .len[0] = sizeof(cmd), 645 }; 646 u8 i; 647 int err; 648 649 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd, req); 650 651 for (i = 0; i < cmd.num_of_ap; i++) { 652 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 653 654 err = iwl_mvm_ftm_put_target_v4(mvm, peer, &cmd.ap[i]); 655 if (err) 656 return err; 657 } 658 659 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 660 } 661 662 static int iwl_mvm_ftm_start_v9(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 663 struct cfg80211_pmsr_request *req) 664 { 665 struct iwl_tof_range_req_cmd_v9 cmd; 666 struct iwl_host_cmd hcmd = { 667 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD), 668 .dataflags[0] = IWL_HCMD_DFL_DUP, 669 .data[0] = &cmd, 670 .len[0] = sizeof(cmd), 671 }; 672 u8 i; 673 int err; 674 675 iwl_mvm_ftm_cmd_common(mvm, vif, &cmd, req); 676 677 for (i = 0; i < cmd.num_of_ap; i++) { 678 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 679 struct iwl_tof_range_req_ap_entry_v6 *target = &cmd.ap[i]; 680 681 err = iwl_mvm_ftm_put_target(mvm, vif, peer, target); 682 if (err) 683 return err; 684 } 685 686 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 687 } 688 689 static void iter(struct ieee80211_hw *hw, 690 struct ieee80211_vif *vif, 691 struct ieee80211_sta *sta, 692 struct ieee80211_key_conf *key, 693 void *data) 694 { 695 struct iwl_tof_range_req_ap_entry_v6 *target = data; 696 697 if (!sta || memcmp(sta->addr, target->bssid, ETH_ALEN)) 698 return; 699 700 WARN_ON(!sta->mfp); 701 702 if (WARN_ON(key->keylen > sizeof(target->tk))) 703 return; 704 705 memcpy(target->tk, key->key, key->keylen); 706 target->cipher = iwl_mvm_cipher_to_location_cipher(key->cipher); 707 WARN_ON(target->cipher == IWL_LOCATION_CIPHER_INVALID); 708 } 709 710 static void 711 iwl_mvm_ftm_set_secured_ranging(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 712 struct iwl_tof_range_req_ap_entry_v7 *target) 713 { 714 struct iwl_mvm_ftm_pasn_entry *entry; 715 u32 flags = le32_to_cpu(target->initiator_ap_flags); 716 717 if (!(flags & (IWL_INITIATOR_AP_FLAGS_NON_TB | 718 IWL_INITIATOR_AP_FLAGS_TB))) 719 return; 720 721 lockdep_assert_held(&mvm->mutex); 722 723 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) { 724 if (memcmp(entry->addr, target->bssid, sizeof(entry->addr))) 725 continue; 726 727 target->cipher = entry->cipher; 728 729 if (entry->flags & IWL_MVM_PASN_FLAG_HAS_HLTK) 730 memcpy(target->hltk, entry->hltk, sizeof(target->hltk)); 731 else 732 memset(target->hltk, 0, sizeof(target->hltk)); 733 734 if (vif->cfg.assoc && 735 !memcmp(vif->bss_conf.bssid, target->bssid, 736 sizeof(target->bssid))) 737 ieee80211_iter_keys(mvm->hw, vif, iter, target); 738 else 739 memcpy(target->tk, entry->tk, sizeof(target->tk)); 740 741 memcpy(target->rx_pn, entry->rx_pn, sizeof(target->rx_pn)); 742 memcpy(target->tx_pn, entry->tx_pn, sizeof(target->tx_pn)); 743 744 target->initiator_ap_flags |= 745 cpu_to_le32(IWL_INITIATOR_AP_FLAGS_SECURED); 746 return; 747 } 748 } 749 750 static int 751 iwl_mvm_ftm_put_target_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 752 struct cfg80211_pmsr_request_peer *peer, 753 struct iwl_tof_range_req_ap_entry_v7 *target) 754 { 755 int err = iwl_mvm_ftm_put_target(mvm, vif, peer, (void *)target); 756 if (err) 757 return err; 758 759 iwl_mvm_ftm_set_secured_ranging(mvm, vif, target); 760 return err; 761 } 762 763 static int iwl_mvm_ftm_start_v11(struct iwl_mvm *mvm, 764 struct ieee80211_vif *vif, 765 struct cfg80211_pmsr_request *req) 766 { 767 struct iwl_tof_range_req_cmd_v11 cmd; 768 struct iwl_host_cmd hcmd = { 769 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD), 770 .dataflags[0] = IWL_HCMD_DFL_DUP, 771 .data[0] = &cmd, 772 .len[0] = sizeof(cmd), 773 }; 774 u8 i; 775 int err; 776 777 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); 778 779 for (i = 0; i < cmd.num_of_ap; i++) { 780 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 781 struct iwl_tof_range_req_ap_entry_v7 *target = &cmd.ap[i]; 782 783 err = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, target); 784 if (err) 785 return err; 786 } 787 788 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 789 } 790 791 static void 792 iwl_mvm_ftm_set_ndp_params(struct iwl_mvm *mvm, 793 struct iwl_tof_range_req_ap_entry_v8 *target) 794 { 795 /* Only 2 STS are supported on Tx */ 796 u32 i2r_max_sts = IWL_MVM_FTM_I2R_MAX_STS > 1 ? 1 : 797 IWL_MVM_FTM_I2R_MAX_STS; 798 799 target->r2i_ndp_params = IWL_MVM_FTM_R2I_MAX_REP | 800 (IWL_MVM_FTM_R2I_MAX_STS << IWL_LOCATION_MAX_STS_POS); 801 target->i2r_ndp_params = IWL_MVM_FTM_I2R_MAX_REP | 802 (i2r_max_sts << IWL_LOCATION_MAX_STS_POS); 803 target->r2i_max_total_ltf = IWL_MVM_FTM_R2I_MAX_TOTAL_LTF; 804 target->i2r_max_total_ltf = IWL_MVM_FTM_I2R_MAX_TOTAL_LTF; 805 } 806 807 static int 808 iwl_mvm_ftm_put_target_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 809 struct cfg80211_pmsr_request_peer *peer, 810 struct iwl_tof_range_req_ap_entry_v8 *target) 811 { 812 u32 flags; 813 int ret = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, (void *)target); 814 815 if (ret) 816 return ret; 817 818 iwl_mvm_ftm_set_ndp_params(mvm, target); 819 820 /* 821 * If secure LTF is turned off, replace the flag with PMF only 822 */ 823 flags = le32_to_cpu(target->initiator_ap_flags); 824 if ((flags & IWL_INITIATOR_AP_FLAGS_SECURED) && 825 !IWL_MVM_FTM_INITIATOR_SECURE_LTF) { 826 flags &= ~IWL_INITIATOR_AP_FLAGS_SECURED; 827 flags |= IWL_INITIATOR_AP_FLAGS_PMF; 828 target->initiator_ap_flags = cpu_to_le32(flags); 829 } 830 831 return 0; 832 } 833 834 static int iwl_mvm_ftm_start_v12(struct iwl_mvm *mvm, 835 struct ieee80211_vif *vif, 836 struct cfg80211_pmsr_request *req) 837 { 838 struct iwl_tof_range_req_cmd_v12 cmd; 839 struct iwl_host_cmd hcmd = { 840 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD), 841 .dataflags[0] = IWL_HCMD_DFL_DUP, 842 .data[0] = &cmd, 843 .len[0] = sizeof(cmd), 844 }; 845 u8 i; 846 int err; 847 848 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); 849 850 for (i = 0; i < cmd.num_of_ap; i++) { 851 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 852 struct iwl_tof_range_req_ap_entry_v8 *target = &cmd.ap[i]; 853 854 err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, target); 855 if (err) 856 return err; 857 } 858 859 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 860 } 861 862 static int iwl_mvm_ftm_start_v13(struct iwl_mvm *mvm, 863 struct ieee80211_vif *vif, 864 struct cfg80211_pmsr_request *req) 865 { 866 struct iwl_tof_range_req_cmd_v13 cmd; 867 struct iwl_host_cmd hcmd = { 868 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD), 869 .dataflags[0] = IWL_HCMD_DFL_DUP, 870 .data[0] = &cmd, 871 .len[0] = sizeof(cmd), 872 }; 873 u8 i; 874 int err; 875 876 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); 877 878 for (i = 0; i < cmd.num_of_ap; i++) { 879 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 880 struct iwl_tof_range_req_ap_entry_v9 *target = &cmd.ap[i]; 881 882 err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, (void *)target); 883 if (err) 884 return err; 885 886 if (peer->ftm.trigger_based || peer->ftm.non_trigger_based) 887 target->bss_color = peer->ftm.bss_color; 888 889 if (peer->ftm.non_trigger_based) { 890 target->min_time_between_msr = 891 cpu_to_le16(IWL_MVM_FTM_NON_TB_MIN_TIME_BETWEEN_MSR); 892 target->burst_period = 893 cpu_to_le16(IWL_MVM_FTM_NON_TB_MAX_TIME_BETWEEN_MSR); 894 } else { 895 target->min_time_between_msr = cpu_to_le16(0); 896 } 897 898 target->band = 899 iwl_mvm_phy_band_from_nl80211(peer->chandef.chan->band); 900 } 901 902 return iwl_mvm_ftm_send_cmd(mvm, &hcmd); 903 } 904 905 int iwl_mvm_ftm_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 906 struct cfg80211_pmsr_request *req) 907 { 908 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 909 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ); 910 int err; 911 912 lockdep_assert_held(&mvm->mutex); 913 914 if (mvm->ftm_initiator.req) 915 return -EBUSY; 916 917 if (new_api) { 918 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 919 WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD), 920 IWL_FW_CMD_VER_UNKNOWN); 921 922 switch (cmd_ver) { 923 case 13: 924 err = iwl_mvm_ftm_start_v13(mvm, vif, req); 925 break; 926 case 12: 927 err = iwl_mvm_ftm_start_v12(mvm, vif, req); 928 break; 929 case 11: 930 err = iwl_mvm_ftm_start_v11(mvm, vif, req); 931 break; 932 case 9: 933 case 10: 934 err = iwl_mvm_ftm_start_v9(mvm, vif, req); 935 break; 936 case 8: 937 err = iwl_mvm_ftm_start_v8(mvm, vif, req); 938 break; 939 default: 940 err = iwl_mvm_ftm_start_v7(mvm, vif, req); 941 break; 942 } 943 } else { 944 err = iwl_mvm_ftm_start_v5(mvm, vif, req); 945 } 946 947 if (!err) { 948 mvm->ftm_initiator.req = req; 949 mvm->ftm_initiator.req_wdev = ieee80211_vif_to_wdev(vif); 950 } 951 952 return err; 953 } 954 955 void iwl_mvm_ftm_abort(struct iwl_mvm *mvm, struct cfg80211_pmsr_request *req) 956 { 957 struct iwl_tof_range_abort_cmd cmd = { 958 .request_id = req->cookie, 959 }; 960 961 lockdep_assert_held(&mvm->mutex); 962 963 if (req != mvm->ftm_initiator.req) 964 return; 965 966 iwl_mvm_ftm_reset(mvm); 967 968 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(LOCATION_GROUP, TOF_RANGE_ABORT_CMD), 969 0, sizeof(cmd), &cmd)) 970 IWL_ERR(mvm, "failed to abort FTM process\n"); 971 } 972 973 static int iwl_mvm_ftm_find_peer(struct cfg80211_pmsr_request *req, 974 const u8 *addr) 975 { 976 int i; 977 978 for (i = 0; i < req->n_peers; i++) { 979 struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; 980 981 if (ether_addr_equal_unaligned(peer->addr, addr)) 982 return i; 983 } 984 985 return -ENOENT; 986 } 987 988 static u64 iwl_mvm_ftm_get_host_time(struct iwl_mvm *mvm, __le32 fw_gp2_ts) 989 { 990 u32 gp2_ts = le32_to_cpu(fw_gp2_ts); 991 u32 curr_gp2, diff; 992 u64 now_from_boot_ns; 993 994 iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2, 995 &now_from_boot_ns, NULL); 996 997 if (curr_gp2 >= gp2_ts) 998 diff = curr_gp2 - gp2_ts; 999 else 1000 diff = curr_gp2 + (U32_MAX - gp2_ts + 1); 1001 1002 return now_from_boot_ns - (u64)diff * 1000; 1003 } 1004 1005 static void iwl_mvm_ftm_get_lci_civic(struct iwl_mvm *mvm, 1006 struct cfg80211_pmsr_result *res) 1007 { 1008 struct iwl_mvm_loc_entry *entry; 1009 1010 list_for_each_entry(entry, &mvm->ftm_initiator.loc_list, list) { 1011 if (!ether_addr_equal_unaligned(res->addr, entry->addr)) 1012 continue; 1013 1014 if (entry->lci_len) { 1015 res->ftm.lci_len = entry->lci_len; 1016 res->ftm.lci = entry->buf; 1017 } 1018 1019 if (entry->civic_len) { 1020 res->ftm.civicloc_len = entry->civic_len; 1021 res->ftm.civicloc = entry->buf + entry->lci_len; 1022 } 1023 1024 /* we found the entry we needed */ 1025 break; 1026 } 1027 } 1028 1029 static int iwl_mvm_ftm_range_resp_valid(struct iwl_mvm *mvm, u8 request_id, 1030 u8 num_of_aps) 1031 { 1032 lockdep_assert_held(&mvm->mutex); 1033 1034 if (request_id != (u8)mvm->ftm_initiator.req->cookie) { 1035 IWL_ERR(mvm, "Request ID mismatch, got %u, active %u\n", 1036 request_id, (u8)mvm->ftm_initiator.req->cookie); 1037 return -EINVAL; 1038 } 1039 1040 if (num_of_aps > mvm->ftm_initiator.req->n_peers) { 1041 IWL_ERR(mvm, "FTM range response invalid\n"); 1042 return -EINVAL; 1043 } 1044 1045 return 0; 1046 } 1047 1048 static void iwl_mvm_ftm_rtt_smoothing(struct iwl_mvm *mvm, 1049 struct cfg80211_pmsr_result *res) 1050 { 1051 struct iwl_mvm_smooth_entry *resp = NULL, *iter; 1052 s64 rtt_avg, rtt = res->ftm.rtt_avg; 1053 u32 undershoot, overshoot; 1054 u8 alpha; 1055 1056 if (!IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH) 1057 return; 1058 1059 WARN_ON(rtt < 0); 1060 1061 if (res->status != NL80211_PMSR_STATUS_SUCCESS) { 1062 IWL_DEBUG_INFO(mvm, 1063 ": %pM: ignore failed measurement. Status=%u\n", 1064 res->addr, res->status); 1065 return; 1066 } 1067 1068 list_for_each_entry(iter, &mvm->ftm_initiator.smooth.resp, list) { 1069 if (!memcmp(res->addr, iter->addr, ETH_ALEN)) { 1070 resp = iter; 1071 break; 1072 } 1073 } 1074 1075 if (!resp) { 1076 resp = kzalloc(sizeof(*resp), GFP_KERNEL); 1077 if (!resp) 1078 return; 1079 1080 memcpy(resp->addr, res->addr, ETH_ALEN); 1081 list_add_tail(&resp->list, &mvm->ftm_initiator.smooth.resp); 1082 1083 resp->rtt_avg = rtt; 1084 1085 IWL_DEBUG_INFO(mvm, "new: %pM: rtt_avg=%lld\n", 1086 resp->addr, resp->rtt_avg); 1087 goto update_time; 1088 } 1089 1090 if (res->host_time - resp->host_time > 1091 IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * 1000000000) { 1092 resp->rtt_avg = rtt; 1093 1094 IWL_DEBUG_INFO(mvm, "expired: %pM: rtt_avg=%lld\n", 1095 resp->addr, resp->rtt_avg); 1096 goto update_time; 1097 } 1098 1099 /* Smooth the results based on the tracked RTT average */ 1100 undershoot = IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT; 1101 overshoot = IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT; 1102 alpha = IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA; 1103 1104 rtt_avg = div_s64(alpha * rtt + (100 - alpha) * resp->rtt_avg, 100); 1105 1106 IWL_DEBUG_INFO(mvm, 1107 "%pM: prev rtt_avg=%lld, new rtt_avg=%lld, rtt=%lld\n", 1108 resp->addr, resp->rtt_avg, rtt_avg, rtt); 1109 1110 /* 1111 * update the responder's average RTT results regardless of 1112 * the under/over shoot logic below 1113 */ 1114 resp->rtt_avg = rtt_avg; 1115 1116 /* smooth the results */ 1117 if (rtt_avg > rtt && (rtt_avg - rtt) > undershoot) { 1118 res->ftm.rtt_avg = rtt_avg; 1119 1120 IWL_DEBUG_INFO(mvm, 1121 "undershoot: val=%lld\n", 1122 (rtt_avg - rtt)); 1123 } else if (rtt_avg < rtt && (rtt - rtt_avg) > 1124 overshoot) { 1125 res->ftm.rtt_avg = rtt_avg; 1126 IWL_DEBUG_INFO(mvm, 1127 "overshoot: val=%lld\n", 1128 (rtt - rtt_avg)); 1129 } 1130 1131 update_time: 1132 resp->host_time = res->host_time; 1133 } 1134 1135 static void iwl_mvm_debug_range_resp(struct iwl_mvm *mvm, u8 index, 1136 struct cfg80211_pmsr_result *res) 1137 { 1138 s64 rtt_avg = div_s64(res->ftm.rtt_avg * 100, 6666); 1139 1140 IWL_DEBUG_INFO(mvm, "entry %d\n", index); 1141 IWL_DEBUG_INFO(mvm, "\tstatus: %d\n", res->status); 1142 IWL_DEBUG_INFO(mvm, "\tBSSID: %pM\n", res->addr); 1143 IWL_DEBUG_INFO(mvm, "\thost time: %llu\n", res->host_time); 1144 IWL_DEBUG_INFO(mvm, "\tburst index: %d\n", res->ftm.burst_index); 1145 IWL_DEBUG_INFO(mvm, "\tsuccess num: %u\n", res->ftm.num_ftmr_successes); 1146 IWL_DEBUG_INFO(mvm, "\trssi: %d\n", res->ftm.rssi_avg); 1147 IWL_DEBUG_INFO(mvm, "\trssi spread: %d\n", res->ftm.rssi_spread); 1148 IWL_DEBUG_INFO(mvm, "\trtt: %lld\n", res->ftm.rtt_avg); 1149 IWL_DEBUG_INFO(mvm, "\trtt var: %llu\n", res->ftm.rtt_variance); 1150 IWL_DEBUG_INFO(mvm, "\trtt spread: %llu\n", res->ftm.rtt_spread); 1151 IWL_DEBUG_INFO(mvm, "\tdistance: %lld\n", rtt_avg); 1152 } 1153 1154 static void 1155 iwl_mvm_ftm_pasn_update_pn(struct iwl_mvm *mvm, 1156 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap) 1157 { 1158 struct iwl_mvm_ftm_pasn_entry *entry; 1159 1160 lockdep_assert_held(&mvm->mutex); 1161 1162 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) { 1163 if (memcmp(fw_ap->bssid, entry->addr, sizeof(entry->addr))) 1164 continue; 1165 1166 memcpy(entry->rx_pn, fw_ap->rx_pn, sizeof(entry->rx_pn)); 1167 memcpy(entry->tx_pn, fw_ap->tx_pn, sizeof(entry->tx_pn)); 1168 return; 1169 } 1170 } 1171 1172 static u8 iwl_mvm_ftm_get_range_resp_ver(struct iwl_mvm *mvm) 1173 { 1174 if (!fw_has_api(&mvm->fw->ucode_capa, 1175 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ)) 1176 return 5; 1177 1178 /* Starting from version 8, the FW advertises the version */ 1179 if (mvm->cmd_ver.range_resp >= 8) 1180 return mvm->cmd_ver.range_resp; 1181 else if (fw_has_api(&mvm->fw->ucode_capa, 1182 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY)) 1183 return 7; 1184 1185 /* The first version of the new range request API */ 1186 return 6; 1187 } 1188 1189 static bool iwl_mvm_ftm_resp_size_validation(u8 ver, unsigned int pkt_len) 1190 { 1191 switch (ver) { 1192 case 9: 1193 case 8: 1194 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v8); 1195 case 7: 1196 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v7); 1197 case 6: 1198 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v6); 1199 case 5: 1200 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v5); 1201 default: 1202 WARN_ONCE(1, "FTM: unsupported range response version %u", ver); 1203 return false; 1204 } 1205 } 1206 1207 void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 1208 { 1209 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1210 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1211 struct iwl_tof_range_rsp_ntfy_v5 *fw_resp_v5 = (void *)pkt->data; 1212 struct iwl_tof_range_rsp_ntfy_v6 *fw_resp_v6 = (void *)pkt->data; 1213 struct iwl_tof_range_rsp_ntfy_v7 *fw_resp_v7 = (void *)pkt->data; 1214 struct iwl_tof_range_rsp_ntfy_v8 *fw_resp_v8 = (void *)pkt->data; 1215 int i; 1216 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 1217 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ); 1218 u8 num_of_aps, last_in_batch; 1219 u8 notif_ver = iwl_mvm_ftm_get_range_resp_ver(mvm); 1220 1221 lockdep_assert_held(&mvm->mutex); 1222 1223 if (!mvm->ftm_initiator.req) { 1224 return; 1225 } 1226 1227 if (unlikely(!iwl_mvm_ftm_resp_size_validation(notif_ver, pkt_len))) 1228 return; 1229 1230 if (new_api) { 1231 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v8->request_id, 1232 fw_resp_v8->num_of_aps)) 1233 return; 1234 1235 num_of_aps = fw_resp_v8->num_of_aps; 1236 last_in_batch = fw_resp_v8->last_report; 1237 } else { 1238 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v5->request_id, 1239 fw_resp_v5->num_of_aps)) 1240 return; 1241 1242 num_of_aps = fw_resp_v5->num_of_aps; 1243 last_in_batch = fw_resp_v5->last_in_batch; 1244 } 1245 1246 IWL_DEBUG_INFO(mvm, "Range response received\n"); 1247 IWL_DEBUG_INFO(mvm, "request id: %lld, num of entries: %u\n", 1248 mvm->ftm_initiator.req->cookie, num_of_aps); 1249 1250 for (i = 0; i < num_of_aps && i < IWL_MVM_TOF_MAX_APS; i++) { 1251 struct cfg80211_pmsr_result result = {}; 1252 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap; 1253 int peer_idx; 1254 1255 if (new_api) { 1256 if (notif_ver >= 8) { 1257 fw_ap = &fw_resp_v8->ap[i]; 1258 iwl_mvm_ftm_pasn_update_pn(mvm, fw_ap); 1259 } else if (notif_ver == 7) { 1260 fw_ap = (void *)&fw_resp_v7->ap[i]; 1261 } else { 1262 fw_ap = (void *)&fw_resp_v6->ap[i]; 1263 } 1264 1265 result.final = fw_ap->last_burst; 1266 result.ap_tsf = le32_to_cpu(fw_ap->start_tsf); 1267 result.ap_tsf_valid = 1; 1268 } else { 1269 /* the first part is the same for old and new APIs */ 1270 fw_ap = (void *)&fw_resp_v5->ap[i]; 1271 /* 1272 * FIXME: the firmware needs to report this, we don't 1273 * even know the number of bursts the responder picked 1274 * (if we asked it to) 1275 */ 1276 result.final = 0; 1277 } 1278 1279 peer_idx = iwl_mvm_ftm_find_peer(mvm->ftm_initiator.req, 1280 fw_ap->bssid); 1281 if (peer_idx < 0) { 1282 IWL_WARN(mvm, 1283 "Unknown address (%pM, target #%d) in FTM response\n", 1284 fw_ap->bssid, i); 1285 continue; 1286 } 1287 1288 switch (fw_ap->measure_status) { 1289 case IWL_TOF_ENTRY_SUCCESS: 1290 result.status = NL80211_PMSR_STATUS_SUCCESS; 1291 break; 1292 case IWL_TOF_ENTRY_TIMING_MEASURE_TIMEOUT: 1293 result.status = NL80211_PMSR_STATUS_TIMEOUT; 1294 break; 1295 case IWL_TOF_ENTRY_NO_RESPONSE: 1296 result.status = NL80211_PMSR_STATUS_FAILURE; 1297 result.ftm.failure_reason = 1298 NL80211_PMSR_FTM_FAILURE_NO_RESPONSE; 1299 break; 1300 case IWL_TOF_ENTRY_REQUEST_REJECTED: 1301 result.status = NL80211_PMSR_STATUS_FAILURE; 1302 result.ftm.failure_reason = 1303 NL80211_PMSR_FTM_FAILURE_PEER_BUSY; 1304 result.ftm.busy_retry_time = fw_ap->refusal_period; 1305 break; 1306 default: 1307 result.status = NL80211_PMSR_STATUS_FAILURE; 1308 result.ftm.failure_reason = 1309 NL80211_PMSR_FTM_FAILURE_UNSPECIFIED; 1310 break; 1311 } 1312 memcpy(result.addr, fw_ap->bssid, ETH_ALEN); 1313 result.host_time = iwl_mvm_ftm_get_host_time(mvm, 1314 fw_ap->timestamp); 1315 result.type = NL80211_PMSR_TYPE_FTM; 1316 result.ftm.burst_index = mvm->ftm_initiator.responses[peer_idx]; 1317 mvm->ftm_initiator.responses[peer_idx]++; 1318 result.ftm.rssi_avg = fw_ap->rssi; 1319 result.ftm.rssi_avg_valid = 1; 1320 result.ftm.rssi_spread = fw_ap->rssi_spread; 1321 result.ftm.rssi_spread_valid = 1; 1322 result.ftm.rtt_avg = (s32)le32_to_cpu(fw_ap->rtt); 1323 result.ftm.rtt_avg_valid = 1; 1324 result.ftm.rtt_variance = le32_to_cpu(fw_ap->rtt_variance); 1325 result.ftm.rtt_variance_valid = 1; 1326 result.ftm.rtt_spread = le32_to_cpu(fw_ap->rtt_spread); 1327 result.ftm.rtt_spread_valid = 1; 1328 1329 iwl_mvm_ftm_get_lci_civic(mvm, &result); 1330 1331 iwl_mvm_ftm_rtt_smoothing(mvm, &result); 1332 1333 cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev, 1334 mvm->ftm_initiator.req, 1335 &result, GFP_KERNEL); 1336 1337 if (fw_has_api(&mvm->fw->ucode_capa, 1338 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY)) 1339 IWL_DEBUG_INFO(mvm, "RTT confidence: %u\n", 1340 fw_ap->rttConfidence); 1341 1342 iwl_mvm_debug_range_resp(mvm, i, &result); 1343 } 1344 1345 if (last_in_batch) { 1346 cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev, 1347 mvm->ftm_initiator.req, 1348 GFP_KERNEL); 1349 iwl_mvm_ftm_reset(mvm); 1350 } 1351 } 1352 1353 void iwl_mvm_ftm_lc_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 1354 { 1355 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1356 const struct ieee80211_mgmt *mgmt = (void *)pkt->data; 1357 size_t len = iwl_rx_packet_payload_len(pkt); 1358 struct iwl_mvm_loc_entry *entry; 1359 const u8 *ies, *lci, *civic, *msr_ie; 1360 size_t ies_len, lci_len = 0, civic_len = 0; 1361 size_t baselen = IEEE80211_MIN_ACTION_SIZE + 1362 sizeof(mgmt->u.action.u.ftm); 1363 static const u8 rprt_type_lci = IEEE80211_SPCT_MSR_RPRT_TYPE_LCI; 1364 static const u8 rprt_type_civic = IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC; 1365 1366 if (len <= baselen) 1367 return; 1368 1369 lockdep_assert_held(&mvm->mutex); 1370 1371 ies = mgmt->u.action.u.ftm.variable; 1372 ies_len = len - baselen; 1373 1374 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len, 1375 &rprt_type_lci, 1, 4); 1376 if (msr_ie) { 1377 lci = msr_ie + 2; 1378 lci_len = msr_ie[1]; 1379 } 1380 1381 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len, 1382 &rprt_type_civic, 1, 4); 1383 if (msr_ie) { 1384 civic = msr_ie + 2; 1385 civic_len = msr_ie[1]; 1386 } 1387 1388 entry = kmalloc(sizeof(*entry) + lci_len + civic_len, GFP_KERNEL); 1389 if (!entry) 1390 return; 1391 1392 memcpy(entry->addr, mgmt->bssid, ETH_ALEN); 1393 1394 entry->lci_len = lci_len; 1395 if (lci_len) 1396 memcpy(entry->buf, lci, lci_len); 1397 1398 entry->civic_len = civic_len; 1399 if (civic_len) 1400 memcpy(entry->buf + lci_len, civic, civic_len); 1401 1402 list_add_tail(&entry->list, &mvm->ftm_initiator.loc_list); 1403 } 1404