1550 lines · c
1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause2/*3 * Copyright (C) 2015-2017 Intel Deutschland GmbH4 * Copyright (C) 2018-2024 Intel Corporation5 */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 14struct 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 21struct iwl_mvm_smooth_entry {22 struct list_head list;23 u8 addr[ETH_ALEN];24 s64 rtt_avg;25 u64 host_time;26};27 28enum iwl_mvm_pasn_flags {29 IWL_MVM_PASN_FLAG_HAS_HLTK = BIT(0),30};31 32struct 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 43struct iwl_mvm_ftm_iter_data {44 u8 *cipher;45 u8 *bssid;46 u8 *tk;47};48 49int iwl_mvm_ftm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,50 u8 *addr, u32 cipher, u8 *tk, u32 tk_len,51 u8 *hltk, u32 hltk_len)52{53 struct iwl_mvm_ftm_pasn_entry *pasn = kzalloc(sizeof(*pasn),54 GFP_KERNEL);55 u32 expected_tk_len;56 57 lockdep_assert_held(&mvm->mutex);58 59 if (!pasn)60 return -ENOBUFS;61 62 iwl_mvm_ftm_remove_pasn_sta(mvm, addr);63 64 pasn->cipher = iwl_mvm_cipher_to_location_cipher(cipher);65 66 switch (pasn->cipher) {67 case IWL_LOCATION_CIPHER_CCMP_128:68 case IWL_LOCATION_CIPHER_GCMP_128:69 expected_tk_len = WLAN_KEY_LEN_CCMP;70 break;71 case IWL_LOCATION_CIPHER_GCMP_256:72 expected_tk_len = WLAN_KEY_LEN_GCMP_256;73 break;74 default:75 goto out;76 }77 78 /*79 * If associated to this AP and already have security context,80 * the TK is already configured for this station, so it81 * shouldn't be set again here.82 */83 if (vif->cfg.assoc) {84 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);85 struct ieee80211_bss_conf *link_conf;86 unsigned int link_id;87 struct ieee80211_sta *sta;88 u8 sta_id;89 90 rcu_read_lock();91 for_each_vif_active_link(vif, link_conf, link_id) {92 if (memcmp(addr, link_conf->bssid, ETH_ALEN))93 continue;94 95 sta_id = mvmvif->link[link_id]->ap_sta_id;96 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);97 if (!IS_ERR_OR_NULL(sta) && sta->mfp)98 expected_tk_len = 0;99 break;100 }101 rcu_read_unlock();102 }103 104 if (tk_len != expected_tk_len ||105 (hltk_len && hltk_len != sizeof(pasn->hltk))) {106 IWL_ERR(mvm, "Invalid key length: tk_len=%u hltk_len=%u\n",107 tk_len, hltk_len);108 goto out;109 }110 111 if (!expected_tk_len && !hltk_len) {112 IWL_ERR(mvm, "TK and HLTK not set\n");113 goto out;114 }115 116 memcpy(pasn->addr, addr, sizeof(pasn->addr));117 118 if (hltk_len) {119 memcpy(pasn->hltk, hltk, sizeof(pasn->hltk));120 pasn->flags |= IWL_MVM_PASN_FLAG_HAS_HLTK;121 }122 123 if (tk && tk_len)124 memcpy(pasn->tk, tk, sizeof(pasn->tk));125 126 list_add_tail(&pasn->list, &mvm->ftm_initiator.pasn_list);127 return 0;128out:129 kfree(pasn);130 return -EINVAL;131}132 133void iwl_mvm_ftm_remove_pasn_sta(struct iwl_mvm *mvm, u8 *addr)134{135 struct iwl_mvm_ftm_pasn_entry *entry, *prev;136 137 lockdep_assert_held(&mvm->mutex);138 139 list_for_each_entry_safe(entry, prev, &mvm->ftm_initiator.pasn_list,140 list) {141 if (memcmp(entry->addr, addr, sizeof(entry->addr)))142 continue;143 144 list_del(&entry->list);145 kfree(entry);146 return;147 }148}149 150static void iwl_mvm_ftm_reset(struct iwl_mvm *mvm)151{152 struct iwl_mvm_loc_entry *e, *t;153 154 mvm->ftm_initiator.req = NULL;155 mvm->ftm_initiator.req_wdev = NULL;156 memset(mvm->ftm_initiator.responses, 0,157 sizeof(mvm->ftm_initiator.responses));158 159 list_for_each_entry_safe(e, t, &mvm->ftm_initiator.loc_list, list) {160 list_del(&e->list);161 kfree(e);162 }163}164 165void iwl_mvm_ftm_restart(struct iwl_mvm *mvm)166{167 struct cfg80211_pmsr_result result = {168 .status = NL80211_PMSR_STATUS_FAILURE,169 .final = 1,170 .host_time = ktime_get_boottime_ns(),171 .type = NL80211_PMSR_TYPE_FTM,172 };173 int i;174 175 lockdep_assert_held(&mvm->mutex);176 177 if (!mvm->ftm_initiator.req)178 return;179 180 for (i = 0; i < mvm->ftm_initiator.req->n_peers; i++) {181 memcpy(result.addr, mvm->ftm_initiator.req->peers[i].addr,182 ETH_ALEN);183 result.ftm.burst_index = mvm->ftm_initiator.responses[i];184 185 cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev,186 mvm->ftm_initiator.req,187 &result, GFP_KERNEL);188 }189 190 cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev,191 mvm->ftm_initiator.req, GFP_KERNEL);192 iwl_mvm_ftm_reset(mvm);193}194 195void iwl_mvm_ftm_initiator_smooth_config(struct iwl_mvm *mvm)196{197 INIT_LIST_HEAD(&mvm->ftm_initiator.smooth.resp);198 199 IWL_DEBUG_INFO(mvm,200 "enable=%u, alpha=%u, age_jiffies=%u, thresh=(%u:%u)\n",201 IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH,202 IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA,203 IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * HZ,204 IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT,205 IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT);206}207 208void iwl_mvm_ftm_initiator_smooth_stop(struct iwl_mvm *mvm)209{210 struct iwl_mvm_smooth_entry *se, *st;211 212 list_for_each_entry_safe(se, st, &mvm->ftm_initiator.smooth.resp,213 list) {214 list_del(&se->list);215 kfree(se);216 }217}218 219static int220iwl_ftm_range_request_status_to_err(enum iwl_tof_range_request_status s)221{222 switch (s) {223 case IWL_TOF_RANGE_REQUEST_STATUS_SUCCESS:224 return 0;225 case IWL_TOF_RANGE_REQUEST_STATUS_BUSY:226 return -EBUSY;227 default:228 WARN_ON_ONCE(1);229 return -EIO;230 }231}232 233static void iwl_mvm_ftm_cmd_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif,234 struct iwl_tof_range_req_cmd_v5 *cmd,235 struct cfg80211_pmsr_request *req)236{237 int i;238 239 cmd->request_id = req->cookie;240 cmd->num_of_ap = req->n_peers;241 242 /* use maximum for "no timeout" or bigger than what we can do */243 if (!req->timeout || req->timeout > 255 * 100)244 cmd->req_timeout = 255;245 else246 cmd->req_timeout = DIV_ROUND_UP(req->timeout, 100);247 248 /*249 * We treat it always as random, since if not we'll250 * have filled our local address there instead.251 */252 cmd->macaddr_random = 1;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->cfg.assoc)258 memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN);259 else260 eth_broadcast_addr(cmd->range_req_bssid);261}262 263static void iwl_mvm_ftm_cmd_common(struct iwl_mvm *mvm,264 struct ieee80211_vif *vif,265 struct iwl_tof_range_req_cmd_v9 *cmd,266 struct cfg80211_pmsr_request *req)267{268 int i;269 270 cmd->initiator_flags =271 cpu_to_le32(IWL_TOF_INITIATOR_FLAGS_MACADDR_RANDOM |272 IWL_TOF_INITIATOR_FLAGS_NON_ASAP_SUPPORT);273 cmd->request_id = req->cookie;274 cmd->num_of_ap = req->n_peers;275 276 /*277 * Use a large value for "no timeout". Don't use the maximum value278 * because of fw limitations.279 */280 if (req->timeout)281 cmd->req_timeout_ms = cpu_to_le32(req->timeout);282 else283 cmd->req_timeout_ms = cpu_to_le32(0xfffff);284 285 memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN);286 for (i = 0; i < ETH_ALEN; i++)287 cmd->macaddr_mask[i] = ~req->mac_addr_mask[i];288 289 if (vif->cfg.assoc) {290 memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN);291 292 /* AP's TSF is only relevant if associated */293 for (i = 0; i < req->n_peers; i++) {294 if (req->peers[i].report_ap_tsf) {295 struct iwl_mvm_vif *mvmvif =296 iwl_mvm_vif_from_mac80211(vif);297 298 cmd->tsf_mac_id = cpu_to_le32(mvmvif->id);299 return;300 }301 }302 } else {303 eth_broadcast_addr(cmd->range_req_bssid);304 }305 306 /* Don't report AP's TSF */307 cmd->tsf_mac_id = cpu_to_le32(0xff);308}309 310static void iwl_mvm_ftm_cmd_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif,311 struct iwl_tof_range_req_cmd_v8 *cmd,312 struct cfg80211_pmsr_request *req)313{314 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)cmd, req);315}316 317static int318iwl_mvm_ftm_target_chandef_v1(struct iwl_mvm *mvm,319 struct cfg80211_pmsr_request_peer *peer,320 u8 *channel, u8 *bandwidth,321 u8 *ctrl_ch_position)322{323 u32 freq = peer->chandef.chan->center_freq;324 325 *channel = ieee80211_frequency_to_channel(freq);326 327 switch (peer->chandef.width) {328 case NL80211_CHAN_WIDTH_20_NOHT:329 *bandwidth = IWL_TOF_BW_20_LEGACY;330 break;331 case NL80211_CHAN_WIDTH_20:332 *bandwidth = IWL_TOF_BW_20_HT;333 break;334 case NL80211_CHAN_WIDTH_40:335 *bandwidth = IWL_TOF_BW_40;336 break;337 case NL80211_CHAN_WIDTH_80:338 *bandwidth = IWL_TOF_BW_80;339 break;340 default:341 IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n",342 peer->chandef.width);343 return -EINVAL;344 }345 346 *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ?347 iwl_mvm_get_ctrl_pos(&peer->chandef) : 0;348 349 return 0;350}351 352static int353iwl_mvm_ftm_target_chandef_v2(struct iwl_mvm *mvm,354 struct cfg80211_pmsr_request_peer *peer,355 u8 *channel, u8 *format_bw,356 u8 *ctrl_ch_position)357{358 u32 freq = peer->chandef.chan->center_freq;359 u8 cmd_ver;360 361 *channel = ieee80211_frequency_to_channel(freq);362 363 switch (peer->chandef.width) {364 case NL80211_CHAN_WIDTH_20_NOHT:365 *format_bw = IWL_LOCATION_FRAME_FORMAT_LEGACY;366 *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS;367 break;368 case NL80211_CHAN_WIDTH_20:369 *format_bw = IWL_LOCATION_FRAME_FORMAT_HT;370 *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS;371 break;372 case NL80211_CHAN_WIDTH_40:373 *format_bw = IWL_LOCATION_FRAME_FORMAT_HT;374 *format_bw |= IWL_LOCATION_BW_40MHZ << LOCATION_BW_POS;375 break;376 case NL80211_CHAN_WIDTH_80:377 *format_bw = IWL_LOCATION_FRAME_FORMAT_VHT;378 *format_bw |= IWL_LOCATION_BW_80MHZ << LOCATION_BW_POS;379 break;380 case NL80211_CHAN_WIDTH_160:381 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,382 WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),383 IWL_FW_CMD_VER_UNKNOWN);384 385 if (cmd_ver >= 13) {386 *format_bw = IWL_LOCATION_FRAME_FORMAT_HE;387 *format_bw |= IWL_LOCATION_BW_160MHZ << LOCATION_BW_POS;388 break;389 }390 fallthrough;391 default:392 IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n",393 peer->chandef.width);394 return -EINVAL;395 }396 397 /* non EDCA based measurement must use HE preamble */398 if (peer->ftm.trigger_based || peer->ftm.non_trigger_based)399 *format_bw |= IWL_LOCATION_FRAME_FORMAT_HE;400 401 *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ?402 iwl_mvm_get_ctrl_pos(&peer->chandef) : 0;403 404 return 0;405}406 407static int408iwl_mvm_ftm_put_target_v2(struct iwl_mvm *mvm,409 struct cfg80211_pmsr_request_peer *peer,410 struct iwl_tof_range_req_ap_entry_v2 *target)411{412 int ret;413 414 ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num,415 &target->bandwidth,416 &target->ctrl_ch_position);417 if (ret)418 return ret;419 420 memcpy(target->bssid, peer->addr, ETH_ALEN);421 target->burst_period =422 cpu_to_le16(peer->ftm.burst_period);423 target->samples_per_burst = peer->ftm.ftms_per_burst;424 target->num_of_bursts = peer->ftm.num_bursts_exp;425 target->measure_type = 0; /* regular two-sided FTM */426 target->retries_per_sample = peer->ftm.ftmr_retries;427 target->asap_mode = peer->ftm.asap;428 target->enable_dyn_ack = IWL_MVM_FTM_INITIATOR_DYNACK;429 430 if (peer->ftm.request_lci)431 target->location_req |= IWL_TOF_LOC_LCI;432 if (peer->ftm.request_civicloc)433 target->location_req |= IWL_TOF_LOC_CIVIC;434 435 target->algo_type = IWL_MVM_FTM_INITIATOR_ALGO;436 437 return 0;438}439 440#define FTM_SET_FLAG(flag) (*flags |= \441 cpu_to_le32(IWL_INITIATOR_AP_FLAGS_##flag))442 443static void444iwl_mvm_ftm_set_target_flags(struct iwl_mvm *mvm,445 struct cfg80211_pmsr_request_peer *peer,446 __le32 *flags)447{448 *flags = cpu_to_le32(0);449 450 if (peer->ftm.asap)451 FTM_SET_FLAG(ASAP);452 453 if (peer->ftm.request_lci)454 FTM_SET_FLAG(LCI_REQUEST);455 456 if (peer->ftm.request_civicloc)457 FTM_SET_FLAG(CIVIC_REQUEST);458 459 if (IWL_MVM_FTM_INITIATOR_DYNACK)460 FTM_SET_FLAG(DYN_ACK);461 462 if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_LINEAR_REG)463 FTM_SET_FLAG(ALGO_LR);464 else if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_FFT)465 FTM_SET_FLAG(ALGO_FFT);466 467 if (peer->ftm.trigger_based)468 FTM_SET_FLAG(TB);469 else if (peer->ftm.non_trigger_based)470 FTM_SET_FLAG(NON_TB);471 472 if ((peer->ftm.trigger_based || peer->ftm.non_trigger_based) &&473 peer->ftm.lmr_feedback)474 FTM_SET_FLAG(LMR_FEEDBACK);475}476 477static void478iwl_mvm_ftm_put_target_common(struct iwl_mvm *mvm,479 struct cfg80211_pmsr_request_peer *peer,480 struct iwl_tof_range_req_ap_entry_v6 *target)481{482 memcpy(target->bssid, peer->addr, ETH_ALEN);483 target->burst_period =484 cpu_to_le16(peer->ftm.burst_period);485 target->samples_per_burst = peer->ftm.ftms_per_burst;486 target->num_of_bursts = peer->ftm.num_bursts_exp;487 target->ftmr_max_retries = peer->ftm.ftmr_retries;488 iwl_mvm_ftm_set_target_flags(mvm, peer, &target->initiator_ap_flags);489}490 491static int492iwl_mvm_ftm_put_target_v3(struct iwl_mvm *mvm,493 struct cfg80211_pmsr_request_peer *peer,494 struct iwl_tof_range_req_ap_entry_v3 *target)495{496 int ret;497 498 ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num,499 &target->bandwidth,500 &target->ctrl_ch_position);501 if (ret)502 return ret;503 504 /*505 * Versions 3 and 4 has some common fields, so506 * iwl_mvm_ftm_put_target_common() can be used for version 7 too.507 */508 iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target);509 510 return 0;511}512 513static int514iwl_mvm_ftm_put_target_v4(struct iwl_mvm *mvm,515 struct cfg80211_pmsr_request_peer *peer,516 struct iwl_tof_range_req_ap_entry_v4 *target)517{518 int ret;519 520 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num,521 &target->format_bw,522 &target->ctrl_ch_position);523 if (ret)524 return ret;525 526 iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target);527 528 return 0;529}530 531static int iwl_mvm_ftm_set_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,532 struct cfg80211_pmsr_request_peer *peer,533 u8 *sta_id, __le32 *flags)534{535 if (vif->cfg.assoc) {536 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);537 struct ieee80211_sta *sta;538 struct ieee80211_bss_conf *link_conf;539 unsigned int link_id;540 541 rcu_read_lock();542 for_each_vif_active_link(vif, link_conf, link_id) {543 if (memcmp(peer->addr, link_conf->bssid, ETH_ALEN))544 continue;545 546 *sta_id = mvmvif->link[link_id]->ap_sta_id;547 sta = rcu_dereference(mvm->fw_id_to_mac_id[*sta_id]);548 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {549 rcu_read_unlock();550 return PTR_ERR_OR_ZERO(sta);551 }552 553 if (sta->mfp && (peer->ftm.trigger_based ||554 peer->ftm.non_trigger_based))555 FTM_SET_FLAG(PMF);556 break;557 }558 rcu_read_unlock();559 560#ifdef CONFIG_IWLWIFI_DEBUGFS561 if (mvmvif->ftm_unprotected) {562 *sta_id = IWL_MVM_INVALID_STA;563 *flags &= ~cpu_to_le32(IWL_INITIATOR_AP_FLAGS_PMF);564 }565#endif566 } else {567 *sta_id = IWL_MVM_INVALID_STA;568 }569 570 return 0;571}572 573static int574iwl_mvm_ftm_put_target(struct iwl_mvm *mvm, struct ieee80211_vif *vif,575 struct cfg80211_pmsr_request_peer *peer,576 struct iwl_tof_range_req_ap_entry_v6 *target)577{578 int ret;579 580 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num,581 &target->format_bw,582 &target->ctrl_ch_position);583 if (ret)584 return ret;585 586 iwl_mvm_ftm_put_target_common(mvm, peer, target);587 588 iwl_mvm_ftm_set_sta(mvm, vif, peer, &target->sta_id,589 &target->initiator_ap_flags);590 591 /*592 * TODO: Beacon interval is currently unknown, so use the common value593 * of 100 TUs.594 */595 target->beacon_interval = cpu_to_le16(100);596 return 0;597}598 599static int iwl_mvm_ftm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *hcmd)600{601 u32 status;602 int err = iwl_mvm_send_cmd_status(mvm, hcmd, &status);603 604 if (!err && status) {605 IWL_ERR(mvm, "FTM range request command failure, status: %u\n",606 status);607 err = iwl_ftm_range_request_status_to_err(status);608 }609 610 return err;611}612 613static int iwl_mvm_ftm_start_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif,614 struct cfg80211_pmsr_request *req)615{616 struct iwl_tof_range_req_cmd_v5 cmd_v5;617 struct iwl_host_cmd hcmd = {618 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),619 .dataflags[0] = IWL_HCMD_DFL_DUP,620 .data[0] = &cmd_v5,621 .len[0] = sizeof(cmd_v5),622 };623 u8 i;624 int err;625 626 iwl_mvm_ftm_cmd_v5(mvm, vif, &cmd_v5, req);627 628 for (i = 0; i < cmd_v5.num_of_ap; i++) {629 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];630 631 err = iwl_mvm_ftm_put_target_v2(mvm, peer, &cmd_v5.ap[i]);632 if (err)633 return err;634 }635 636 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);637}638 639static int iwl_mvm_ftm_start_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif,640 struct cfg80211_pmsr_request *req)641{642 struct iwl_tof_range_req_cmd_v7 cmd_v7;643 struct iwl_host_cmd hcmd = {644 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),645 .dataflags[0] = IWL_HCMD_DFL_DUP,646 .data[0] = &cmd_v7,647 .len[0] = sizeof(cmd_v7),648 };649 u8 i;650 int err;651 652 /*653 * Versions 7 and 8 has the same structure except from the responders654 * list, so iwl_mvm_ftm_cmd() can be used for version 7 too.655 */656 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd_v7, req);657 658 for (i = 0; i < cmd_v7.num_of_ap; i++) {659 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];660 661 err = iwl_mvm_ftm_put_target_v3(mvm, peer, &cmd_v7.ap[i]);662 if (err)663 return err;664 }665 666 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);667}668 669static int iwl_mvm_ftm_start_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif,670 struct cfg80211_pmsr_request *req)671{672 struct iwl_tof_range_req_cmd_v8 cmd;673 struct iwl_host_cmd hcmd = {674 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),675 .dataflags[0] = IWL_HCMD_DFL_DUP,676 .data[0] = &cmd,677 .len[0] = sizeof(cmd),678 };679 u8 i;680 int err;681 682 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd, req);683 684 for (i = 0; i < cmd.num_of_ap; i++) {685 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];686 687 err = iwl_mvm_ftm_put_target_v4(mvm, peer, &cmd.ap[i]);688 if (err)689 return err;690 }691 692 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);693}694 695static int iwl_mvm_ftm_start_v9(struct iwl_mvm *mvm, struct ieee80211_vif *vif,696 struct cfg80211_pmsr_request *req)697{698 struct iwl_tof_range_req_cmd_v9 cmd;699 struct iwl_host_cmd hcmd = {700 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),701 .dataflags[0] = IWL_HCMD_DFL_DUP,702 .data[0] = &cmd,703 .len[0] = sizeof(cmd),704 };705 u8 i;706 int err;707 708 iwl_mvm_ftm_cmd_common(mvm, vif, &cmd, req);709 710 for (i = 0; i < cmd.num_of_ap; i++) {711 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];712 struct iwl_tof_range_req_ap_entry_v6 *target = &cmd.ap[i];713 714 err = iwl_mvm_ftm_put_target(mvm, vif, peer, target);715 if (err)716 return err;717 }718 719 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);720}721 722static void iter(struct ieee80211_hw *hw,723 struct ieee80211_vif *vif,724 struct ieee80211_sta *sta,725 struct ieee80211_key_conf *key,726 void *data)727{728 struct iwl_mvm_ftm_iter_data *target = data;729 730 if (!sta || memcmp(sta->addr, target->bssid, ETH_ALEN))731 return;732 733 WARN_ON(!sta->mfp);734 735 target->tk = key->key;736 *target->cipher = iwl_mvm_cipher_to_location_cipher(key->cipher);737 WARN_ON(*target->cipher == IWL_LOCATION_CIPHER_INVALID);738}739 740static void741iwl_mvm_ftm_set_secured_ranging(struct iwl_mvm *mvm, struct ieee80211_vif *vif,742 u8 *bssid, u8 *cipher, u8 *hltk, u8 *tk,743 u8 *rx_pn, u8 *tx_pn, __le32 *flags)744{745 struct iwl_mvm_ftm_pasn_entry *entry;746#ifdef CONFIG_IWLWIFI_DEBUGFS747 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);748 749 if (mvmvif->ftm_unprotected)750 return;751#endif752 753 if (!(le32_to_cpu(*flags) & (IWL_INITIATOR_AP_FLAGS_NON_TB |754 IWL_INITIATOR_AP_FLAGS_TB)))755 return;756 757 lockdep_assert_held(&mvm->mutex);758 759 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) {760 if (memcmp(entry->addr, bssid, sizeof(entry->addr)))761 continue;762 763 *cipher = entry->cipher;764 765 if (entry->flags & IWL_MVM_PASN_FLAG_HAS_HLTK)766 memcpy(hltk, entry->hltk, sizeof(entry->hltk));767 else768 memset(hltk, 0, sizeof(entry->hltk));769 770 if (vif->cfg.assoc &&771 !memcmp(vif->bss_conf.bssid, bssid, ETH_ALEN)) {772 struct iwl_mvm_ftm_iter_data target;773 774 target.bssid = bssid;775 target.cipher = cipher;776 ieee80211_iter_keys(mvm->hw, vif, iter, &target);777 } else {778 memcpy(tk, entry->tk, sizeof(entry->tk));779 }780 781 memcpy(rx_pn, entry->rx_pn, sizeof(entry->rx_pn));782 memcpy(tx_pn, entry->tx_pn, sizeof(entry->tx_pn));783 784 FTM_SET_FLAG(SECURED);785 return;786 }787}788 789static int790iwl_mvm_ftm_put_target_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif,791 struct cfg80211_pmsr_request_peer *peer,792 struct iwl_tof_range_req_ap_entry_v7 *target)793{794 int err = iwl_mvm_ftm_put_target(mvm, vif, peer, (void *)target);795 if (err)796 return err;797 798 iwl_mvm_ftm_set_secured_ranging(mvm, vif, target->bssid,799 &target->cipher, target->hltk,800 target->tk, target->rx_pn,801 target->tx_pn,802 &target->initiator_ap_flags);803 return err;804}805 806static int iwl_mvm_ftm_start_v11(struct iwl_mvm *mvm,807 struct ieee80211_vif *vif,808 struct cfg80211_pmsr_request *req)809{810 struct iwl_tof_range_req_cmd_v11 cmd;811 struct iwl_host_cmd hcmd = {812 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),813 .dataflags[0] = IWL_HCMD_DFL_DUP,814 .data[0] = &cmd,815 .len[0] = sizeof(cmd),816 };817 u8 i;818 int err;819 820 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);821 822 for (i = 0; i < cmd.num_of_ap; i++) {823 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];824 struct iwl_tof_range_req_ap_entry_v7 *target = &cmd.ap[i];825 826 err = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, target);827 if (err)828 return err;829 }830 831 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);832}833 834static void835iwl_mvm_ftm_set_ndp_params(struct iwl_mvm *mvm,836 struct iwl_tof_range_req_ap_entry_v8 *target)837{838 /* Only 2 STS are supported on Tx */839 u32 i2r_max_sts = IWL_MVM_FTM_I2R_MAX_STS > 1 ? 1 :840 IWL_MVM_FTM_I2R_MAX_STS;841 842 target->r2i_ndp_params = IWL_MVM_FTM_R2I_MAX_REP |843 (IWL_MVM_FTM_R2I_MAX_STS << IWL_LOCATION_MAX_STS_POS);844 target->i2r_ndp_params = IWL_MVM_FTM_I2R_MAX_REP |845 (i2r_max_sts << IWL_LOCATION_MAX_STS_POS);846 target->r2i_max_total_ltf = IWL_MVM_FTM_R2I_MAX_TOTAL_LTF;847 target->i2r_max_total_ltf = IWL_MVM_FTM_I2R_MAX_TOTAL_LTF;848}849 850static int851iwl_mvm_ftm_put_target_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif,852 struct cfg80211_pmsr_request_peer *peer,853 struct iwl_tof_range_req_ap_entry_v8 *target)854{855 u32 flags;856 int ret = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, (void *)target);857 858 if (ret)859 return ret;860 861 iwl_mvm_ftm_set_ndp_params(mvm, target);862 863 /*864 * If secure LTF is turned off, replace the flag with PMF only865 */866 flags = le32_to_cpu(target->initiator_ap_flags);867 if (flags & IWL_INITIATOR_AP_FLAGS_SECURED) {868 if (!IWL_MVM_FTM_INITIATOR_SECURE_LTF)869 flags &= ~IWL_INITIATOR_AP_FLAGS_SECURED;870 871 flags |= IWL_INITIATOR_AP_FLAGS_PMF;872 target->initiator_ap_flags = cpu_to_le32(flags);873 }874 875 return 0;876}877 878static int iwl_mvm_ftm_start_v12(struct iwl_mvm *mvm,879 struct ieee80211_vif *vif,880 struct cfg80211_pmsr_request *req)881{882 struct iwl_tof_range_req_cmd_v12 cmd;883 struct iwl_host_cmd hcmd = {884 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),885 .dataflags[0] = IWL_HCMD_DFL_DUP,886 .data[0] = &cmd,887 .len[0] = sizeof(cmd),888 };889 u8 i;890 int err;891 892 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);893 894 for (i = 0; i < cmd.num_of_ap; i++) {895 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];896 struct iwl_tof_range_req_ap_entry_v8 *target = &cmd.ap[i];897 898 err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, target);899 if (err)900 return err;901 }902 903 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);904}905 906static int iwl_mvm_ftm_start_v13(struct iwl_mvm *mvm,907 struct ieee80211_vif *vif,908 struct cfg80211_pmsr_request *req)909{910 struct iwl_tof_range_req_cmd_v13 cmd;911 struct iwl_host_cmd hcmd = {912 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),913 .dataflags[0] = IWL_HCMD_DFL_DUP,914 .data[0] = &cmd,915 .len[0] = sizeof(cmd),916 };917 u8 i;918 int err;919 920 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);921 922 for (i = 0; i < cmd.num_of_ap; i++) {923 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];924 struct iwl_tof_range_req_ap_entry_v9 *target = &cmd.ap[i];925 926 err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, (void *)target);927 if (err)928 return err;929 930 if (peer->ftm.trigger_based || peer->ftm.non_trigger_based)931 target->bss_color = peer->ftm.bss_color;932 933 if (peer->ftm.non_trigger_based) {934 target->min_time_between_msr =935 cpu_to_le16(IWL_MVM_FTM_NON_TB_MIN_TIME_BETWEEN_MSR);936 target->burst_period =937 cpu_to_le16(IWL_MVM_FTM_NON_TB_MAX_TIME_BETWEEN_MSR);938 } else {939 target->min_time_between_msr = cpu_to_le16(0);940 }941 942 target->band =943 iwl_mvm_phy_band_from_nl80211(peer->chandef.chan->band);944 }945 946 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);947}948 949static int950iwl_mvm_ftm_put_target_v10(struct iwl_mvm *mvm, struct ieee80211_vif *vif,951 struct cfg80211_pmsr_request_peer *peer,952 struct iwl_tof_range_req_ap_entry_v10 *target)953{954 u32 i2r_max_sts, flags;955 int ret;956 957 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num,958 &target->format_bw,959 &target->ctrl_ch_position);960 if (ret)961 return ret;962 963 memcpy(target->bssid, peer->addr, ETH_ALEN);964 target->burst_period =965 cpu_to_le16(peer->ftm.burst_period);966 target->samples_per_burst = peer->ftm.ftms_per_burst;967 target->num_of_bursts = peer->ftm.num_bursts_exp;968 iwl_mvm_ftm_set_target_flags(mvm, peer, &target->initiator_ap_flags);969 iwl_mvm_ftm_set_sta(mvm, vif, peer, &target->sta_id,970 &target->initiator_ap_flags);971 iwl_mvm_ftm_set_secured_ranging(mvm, vif, target->bssid,972 &target->cipher, target->hltk,973 target->tk, target->rx_pn,974 target->tx_pn,975 &target->initiator_ap_flags);976 977 i2r_max_sts = IWL_MVM_FTM_I2R_MAX_STS > 1 ? 1 :978 IWL_MVM_FTM_I2R_MAX_STS;979 980 target->r2i_ndp_params = IWL_MVM_FTM_R2I_MAX_REP |981 (IWL_MVM_FTM_R2I_MAX_STS << IWL_LOCATION_MAX_STS_POS) |982 (IWL_MVM_FTM_R2I_MAX_TOTAL_LTF << IWL_LOCATION_TOTAL_LTF_POS);983 target->i2r_ndp_params = IWL_MVM_FTM_I2R_MAX_REP |984 (i2r_max_sts << IWL_LOCATION_MAX_STS_POS) |985 (IWL_MVM_FTM_I2R_MAX_TOTAL_LTF << IWL_LOCATION_TOTAL_LTF_POS);986 987 if (peer->ftm.non_trigger_based) {988 target->min_time_between_msr =989 cpu_to_le16(IWL_MVM_FTM_NON_TB_MIN_TIME_BETWEEN_MSR);990 target->burst_period =991 cpu_to_le16(IWL_MVM_FTM_NON_TB_MAX_TIME_BETWEEN_MSR);992 } else {993 target->min_time_between_msr = cpu_to_le16(0);994 }995 996 target->band =997 iwl_mvm_phy_band_from_nl80211(peer->chandef.chan->band);998 999 /*1000 * TODO: Beacon interval is currently unknown, so use the common value1001 * of 100 TUs.1002 */1003 target->beacon_interval = cpu_to_le16(100);1004 1005 /*1006 * If secure LTF is turned off, replace the flag with PMF only1007 */1008 flags = le32_to_cpu(target->initiator_ap_flags);1009 if (flags & IWL_INITIATOR_AP_FLAGS_SECURED) {1010 if (!IWL_MVM_FTM_INITIATOR_SECURE_LTF)1011 flags &= ~IWL_INITIATOR_AP_FLAGS_SECURED;1012 1013 flags |= IWL_INITIATOR_AP_FLAGS_PMF;1014 target->initiator_ap_flags = cpu_to_le32(flags);1015 }1016 1017 return 0;1018}1019 1020static int iwl_mvm_ftm_start_v14(struct iwl_mvm *mvm,1021 struct ieee80211_vif *vif,1022 struct cfg80211_pmsr_request *req)1023{1024 struct iwl_tof_range_req_cmd_v14 cmd;1025 struct iwl_host_cmd hcmd = {1026 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),1027 .dataflags[0] = IWL_HCMD_DFL_DUP,1028 .data[0] = &cmd,1029 .len[0] = sizeof(cmd),1030 };1031 u8 i;1032 int err;1033 1034 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);1035 1036 for (i = 0; i < cmd.num_of_ap; i++) {1037 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];1038 struct iwl_tof_range_req_ap_entry_v10 *target = &cmd.ap[i];1039 1040 err = iwl_mvm_ftm_put_target_v10(mvm, vif, peer, target);1041 if (err)1042 return err;1043 }1044 1045 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);1046}1047 1048int iwl_mvm_ftm_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,1049 struct cfg80211_pmsr_request *req)1050{1051 bool new_api = fw_has_api(&mvm->fw->ucode_capa,1052 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ);1053 int err;1054 1055 lockdep_assert_held(&mvm->mutex);1056 1057 if (mvm->ftm_initiator.req)1058 return -EBUSY;1059 1060 if (new_api) {1061 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,1062 WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),1063 IWL_FW_CMD_VER_UNKNOWN);1064 1065 switch (cmd_ver) {1066 case 14:1067 err = iwl_mvm_ftm_start_v14(mvm, vif, req);1068 break;1069 case 13:1070 err = iwl_mvm_ftm_start_v13(mvm, vif, req);1071 break;1072 case 12:1073 err = iwl_mvm_ftm_start_v12(mvm, vif, req);1074 break;1075 case 11:1076 err = iwl_mvm_ftm_start_v11(mvm, vif, req);1077 break;1078 case 9:1079 case 10:1080 err = iwl_mvm_ftm_start_v9(mvm, vif, req);1081 break;1082 case 8:1083 err = iwl_mvm_ftm_start_v8(mvm, vif, req);1084 break;1085 default:1086 err = iwl_mvm_ftm_start_v7(mvm, vif, req);1087 break;1088 }1089 } else {1090 err = iwl_mvm_ftm_start_v5(mvm, vif, req);1091 }1092 1093 if (!err) {1094 mvm->ftm_initiator.req = req;1095 mvm->ftm_initiator.req_wdev = ieee80211_vif_to_wdev(vif);1096 }1097 1098 return err;1099}1100 1101void iwl_mvm_ftm_abort(struct iwl_mvm *mvm, struct cfg80211_pmsr_request *req)1102{1103 struct iwl_tof_range_abort_cmd cmd = {1104 .request_id = req->cookie,1105 };1106 1107 lockdep_assert_held(&mvm->mutex);1108 1109 if (req != mvm->ftm_initiator.req)1110 return;1111 1112 iwl_mvm_ftm_reset(mvm);1113 1114 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(LOCATION_GROUP, TOF_RANGE_ABORT_CMD),1115 0, sizeof(cmd), &cmd))1116 IWL_ERR(mvm, "failed to abort FTM process\n");1117}1118 1119static int iwl_mvm_ftm_find_peer(struct cfg80211_pmsr_request *req,1120 const u8 *addr)1121{1122 int i;1123 1124 for (i = 0; i < req->n_peers; i++) {1125 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];1126 1127 if (ether_addr_equal_unaligned(peer->addr, addr))1128 return i;1129 }1130 1131 return -ENOENT;1132}1133 1134static u64 iwl_mvm_ftm_get_host_time(struct iwl_mvm *mvm, __le32 fw_gp2_ts)1135{1136 u32 gp2_ts = le32_to_cpu(fw_gp2_ts);1137 u32 curr_gp2, diff;1138 u64 now_from_boot_ns;1139 1140 iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2,1141 &now_from_boot_ns, NULL);1142 1143 if (curr_gp2 >= gp2_ts)1144 diff = curr_gp2 - gp2_ts;1145 else1146 diff = curr_gp2 + (U32_MAX - gp2_ts + 1);1147 1148 return now_from_boot_ns - (u64)diff * 1000;1149}1150 1151static void iwl_mvm_ftm_get_lci_civic(struct iwl_mvm *mvm,1152 struct cfg80211_pmsr_result *res)1153{1154 struct iwl_mvm_loc_entry *entry;1155 1156 list_for_each_entry(entry, &mvm->ftm_initiator.loc_list, list) {1157 if (!ether_addr_equal_unaligned(res->addr, entry->addr))1158 continue;1159 1160 if (entry->lci_len) {1161 res->ftm.lci_len = entry->lci_len;1162 res->ftm.lci = entry->buf;1163 }1164 1165 if (entry->civic_len) {1166 res->ftm.civicloc_len = entry->civic_len;1167 res->ftm.civicloc = entry->buf + entry->lci_len;1168 }1169 1170 /* we found the entry we needed */1171 break;1172 }1173}1174 1175static int iwl_mvm_ftm_range_resp_valid(struct iwl_mvm *mvm, u8 request_id,1176 u8 num_of_aps)1177{1178 lockdep_assert_held(&mvm->mutex);1179 1180 if (request_id != (u8)mvm->ftm_initiator.req->cookie) {1181 IWL_ERR(mvm, "Request ID mismatch, got %u, active %u\n",1182 request_id, (u8)mvm->ftm_initiator.req->cookie);1183 return -EINVAL;1184 }1185 1186 if (num_of_aps > mvm->ftm_initiator.req->n_peers) {1187 IWL_ERR(mvm, "FTM range response invalid\n");1188 return -EINVAL;1189 }1190 1191 return 0;1192}1193 1194static void iwl_mvm_ftm_rtt_smoothing(struct iwl_mvm *mvm,1195 struct cfg80211_pmsr_result *res)1196{1197 struct iwl_mvm_smooth_entry *resp = NULL, *iter;1198 s64 rtt_avg, rtt = res->ftm.rtt_avg;1199 u32 undershoot, overshoot;1200 u8 alpha;1201 1202 if (!IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH)1203 return;1204 1205 WARN_ON(rtt < 0);1206 1207 if (res->status != NL80211_PMSR_STATUS_SUCCESS) {1208 IWL_DEBUG_INFO(mvm,1209 ": %pM: ignore failed measurement. Status=%u\n",1210 res->addr, res->status);1211 return;1212 }1213 1214 list_for_each_entry(iter, &mvm->ftm_initiator.smooth.resp, list) {1215 if (!memcmp(res->addr, iter->addr, ETH_ALEN)) {1216 resp = iter;1217 break;1218 }1219 }1220 1221 if (!resp) {1222 resp = kzalloc(sizeof(*resp), GFP_KERNEL);1223 if (!resp)1224 return;1225 1226 memcpy(resp->addr, res->addr, ETH_ALEN);1227 list_add_tail(&resp->list, &mvm->ftm_initiator.smooth.resp);1228 1229 resp->rtt_avg = rtt;1230 1231 IWL_DEBUG_INFO(mvm, "new: %pM: rtt_avg=%lld\n",1232 resp->addr, resp->rtt_avg);1233 goto update_time;1234 }1235 1236 if (res->host_time - resp->host_time >1237 IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * 1000000000) {1238 resp->rtt_avg = rtt;1239 1240 IWL_DEBUG_INFO(mvm, "expired: %pM: rtt_avg=%lld\n",1241 resp->addr, resp->rtt_avg);1242 goto update_time;1243 }1244 1245 /* Smooth the results based on the tracked RTT average */1246 undershoot = IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT;1247 overshoot = IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT;1248 alpha = IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA;1249 1250 rtt_avg = div_s64(alpha * rtt + (100 - alpha) * resp->rtt_avg, 100);1251 1252 IWL_DEBUG_INFO(mvm,1253 "%pM: prev rtt_avg=%lld, new rtt_avg=%lld, rtt=%lld\n",1254 resp->addr, resp->rtt_avg, rtt_avg, rtt);1255 1256 /*1257 * update the responder's average RTT results regardless of1258 * the under/over shoot logic below1259 */1260 resp->rtt_avg = rtt_avg;1261 1262 /* smooth the results */1263 if (rtt_avg > rtt && (rtt_avg - rtt) > undershoot) {1264 res->ftm.rtt_avg = rtt_avg;1265 1266 IWL_DEBUG_INFO(mvm,1267 "undershoot: val=%lld\n",1268 (rtt_avg - rtt));1269 } else if (rtt_avg < rtt && (rtt - rtt_avg) >1270 overshoot) {1271 res->ftm.rtt_avg = rtt_avg;1272 IWL_DEBUG_INFO(mvm,1273 "overshoot: val=%lld\n",1274 (rtt - rtt_avg));1275 }1276 1277update_time:1278 resp->host_time = res->host_time;1279}1280 1281static void iwl_mvm_debug_range_resp(struct iwl_mvm *mvm, u8 index,1282 struct cfg80211_pmsr_result *res)1283{1284 s64 rtt_avg = div_s64(res->ftm.rtt_avg * 100, 6666);1285 1286 IWL_DEBUG_INFO(mvm, "entry %d\n", index);1287 IWL_DEBUG_INFO(mvm, "\tstatus: %d\n", res->status);1288 IWL_DEBUG_INFO(mvm, "\tBSSID: %pM\n", res->addr);1289 IWL_DEBUG_INFO(mvm, "\thost time: %llu\n", res->host_time);1290 IWL_DEBUG_INFO(mvm, "\tburst index: %d\n", res->ftm.burst_index);1291 IWL_DEBUG_INFO(mvm, "\tsuccess num: %u\n", res->ftm.num_ftmr_successes);1292 IWL_DEBUG_INFO(mvm, "\trssi: %d\n", res->ftm.rssi_avg);1293 IWL_DEBUG_INFO(mvm, "\trssi spread: %d\n", res->ftm.rssi_spread);1294 IWL_DEBUG_INFO(mvm, "\trtt: %lld\n", res->ftm.rtt_avg);1295 IWL_DEBUG_INFO(mvm, "\trtt var: %llu\n", res->ftm.rtt_variance);1296 IWL_DEBUG_INFO(mvm, "\trtt spread: %llu\n", res->ftm.rtt_spread);1297 IWL_DEBUG_INFO(mvm, "\tdistance: %lld\n", rtt_avg);1298}1299 1300static void1301iwl_mvm_ftm_pasn_update_pn(struct iwl_mvm *mvm,1302 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap)1303{1304 struct iwl_mvm_ftm_pasn_entry *entry;1305 1306 lockdep_assert_held(&mvm->mutex);1307 1308 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) {1309 if (memcmp(fw_ap->bssid, entry->addr, sizeof(entry->addr)))1310 continue;1311 1312 memcpy(entry->rx_pn, fw_ap->rx_pn, sizeof(entry->rx_pn));1313 memcpy(entry->tx_pn, fw_ap->tx_pn, sizeof(entry->tx_pn));1314 return;1315 }1316}1317 1318static u8 iwl_mvm_ftm_get_range_resp_ver(struct iwl_mvm *mvm)1319{1320 if (!fw_has_api(&mvm->fw->ucode_capa,1321 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ))1322 return 5;1323 1324 /* Starting from version 8, the FW advertises the version */1325 if (mvm->cmd_ver.range_resp >= 8)1326 return mvm->cmd_ver.range_resp;1327 else if (fw_has_api(&mvm->fw->ucode_capa,1328 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY))1329 return 7;1330 1331 /* The first version of the new range request API */1332 return 6;1333}1334 1335static bool iwl_mvm_ftm_resp_size_validation(u8 ver, unsigned int pkt_len)1336{1337 switch (ver) {1338 case 9:1339 case 8:1340 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v8);1341 case 7:1342 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v7);1343 case 6:1344 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v6);1345 case 5:1346 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v5);1347 default:1348 WARN_ONCE(1, "FTM: unsupported range response version %u", ver);1349 return false;1350 }1351}1352 1353void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)1354{1355 struct iwl_rx_packet *pkt = rxb_addr(rxb);1356 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);1357 struct iwl_tof_range_rsp_ntfy_v5 *fw_resp_v5 = (void *)pkt->data;1358 struct iwl_tof_range_rsp_ntfy_v6 *fw_resp_v6 = (void *)pkt->data;1359 struct iwl_tof_range_rsp_ntfy_v7 *fw_resp_v7 = (void *)pkt->data;1360 struct iwl_tof_range_rsp_ntfy_v8 *fw_resp_v8 = (void *)pkt->data;1361 int i;1362 bool new_api = fw_has_api(&mvm->fw->ucode_capa,1363 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ);1364 u8 num_of_aps, last_in_batch;1365 u8 notif_ver = iwl_mvm_ftm_get_range_resp_ver(mvm);1366 1367 lockdep_assert_held(&mvm->mutex);1368 1369 if (!mvm->ftm_initiator.req) {1370 return;1371 }1372 1373 if (unlikely(!iwl_mvm_ftm_resp_size_validation(notif_ver, pkt_len)))1374 return;1375 1376 if (new_api) {1377 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v8->request_id,1378 fw_resp_v8->num_of_aps))1379 return;1380 1381 num_of_aps = fw_resp_v8->num_of_aps;1382 last_in_batch = fw_resp_v8->last_report;1383 } else {1384 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v5->request_id,1385 fw_resp_v5->num_of_aps))1386 return;1387 1388 num_of_aps = fw_resp_v5->num_of_aps;1389 last_in_batch = fw_resp_v5->last_in_batch;1390 }1391 1392 IWL_DEBUG_INFO(mvm, "Range response received\n");1393 IWL_DEBUG_INFO(mvm, "request id: %lld, num of entries: %u\n",1394 mvm->ftm_initiator.req->cookie, num_of_aps);1395 1396 for (i = 0; i < num_of_aps && i < IWL_MVM_TOF_MAX_APS; i++) {1397 struct cfg80211_pmsr_result result = {};1398 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap;1399 int peer_idx;1400 1401 if (new_api) {1402 if (notif_ver >= 8) {1403 fw_ap = &fw_resp_v8->ap[i];1404 iwl_mvm_ftm_pasn_update_pn(mvm, fw_ap);1405 } else if (notif_ver == 7) {1406 fw_ap = (void *)&fw_resp_v7->ap[i];1407 } else {1408 fw_ap = (void *)&fw_resp_v6->ap[i];1409 }1410 1411 result.final = fw_ap->last_burst;1412 result.ap_tsf = le32_to_cpu(fw_ap->start_tsf);1413 result.ap_tsf_valid = 1;1414 } else {1415 /* the first part is the same for old and new APIs */1416 fw_ap = (void *)&fw_resp_v5->ap[i];1417 /*1418 * FIXME: the firmware needs to report this, we don't1419 * even know the number of bursts the responder picked1420 * (if we asked it to)1421 */1422 result.final = 0;1423 }1424 1425 peer_idx = iwl_mvm_ftm_find_peer(mvm->ftm_initiator.req,1426 fw_ap->bssid);1427 if (peer_idx < 0) {1428 IWL_WARN(mvm,1429 "Unknown address (%pM, target #%d) in FTM response\n",1430 fw_ap->bssid, i);1431 continue;1432 }1433 1434 switch (fw_ap->measure_status) {1435 case IWL_TOF_ENTRY_SUCCESS:1436 result.status = NL80211_PMSR_STATUS_SUCCESS;1437 break;1438 case IWL_TOF_ENTRY_TIMING_MEASURE_TIMEOUT:1439 result.status = NL80211_PMSR_STATUS_TIMEOUT;1440 break;1441 case IWL_TOF_ENTRY_NO_RESPONSE:1442 result.status = NL80211_PMSR_STATUS_FAILURE;1443 result.ftm.failure_reason =1444 NL80211_PMSR_FTM_FAILURE_NO_RESPONSE;1445 break;1446 case IWL_TOF_ENTRY_REQUEST_REJECTED:1447 result.status = NL80211_PMSR_STATUS_FAILURE;1448 result.ftm.failure_reason =1449 NL80211_PMSR_FTM_FAILURE_PEER_BUSY;1450 result.ftm.busy_retry_time = fw_ap->refusal_period;1451 break;1452 default:1453 result.status = NL80211_PMSR_STATUS_FAILURE;1454 result.ftm.failure_reason =1455 NL80211_PMSR_FTM_FAILURE_UNSPECIFIED;1456 break;1457 }1458 memcpy(result.addr, fw_ap->bssid, ETH_ALEN);1459 result.host_time = iwl_mvm_ftm_get_host_time(mvm,1460 fw_ap->timestamp);1461 result.type = NL80211_PMSR_TYPE_FTM;1462 result.ftm.burst_index = mvm->ftm_initiator.responses[peer_idx];1463 mvm->ftm_initiator.responses[peer_idx]++;1464 result.ftm.rssi_avg = fw_ap->rssi;1465 result.ftm.rssi_avg_valid = 1;1466 result.ftm.rssi_spread = fw_ap->rssi_spread;1467 result.ftm.rssi_spread_valid = 1;1468 result.ftm.rtt_avg = (s32)le32_to_cpu(fw_ap->rtt);1469 result.ftm.rtt_avg_valid = 1;1470 result.ftm.rtt_variance = le32_to_cpu(fw_ap->rtt_variance);1471 result.ftm.rtt_variance_valid = 1;1472 result.ftm.rtt_spread = le32_to_cpu(fw_ap->rtt_spread);1473 result.ftm.rtt_spread_valid = 1;1474 1475 iwl_mvm_ftm_get_lci_civic(mvm, &result);1476 1477 iwl_mvm_ftm_rtt_smoothing(mvm, &result);1478 1479 cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev,1480 mvm->ftm_initiator.req,1481 &result, GFP_KERNEL);1482 1483 if (fw_has_api(&mvm->fw->ucode_capa,1484 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY))1485 IWL_DEBUG_INFO(mvm, "RTT confidence: %u\n",1486 fw_ap->rttConfidence);1487 1488 iwl_mvm_debug_range_resp(mvm, i, &result);1489 }1490 1491 if (last_in_batch) {1492 cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev,1493 mvm->ftm_initiator.req,1494 GFP_KERNEL);1495 iwl_mvm_ftm_reset(mvm);1496 }1497}1498 1499void iwl_mvm_ftm_lc_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)1500{1501 struct iwl_rx_packet *pkt = rxb_addr(rxb);1502 const struct ieee80211_mgmt *mgmt = (void *)pkt->data;1503 size_t len = iwl_rx_packet_payload_len(pkt);1504 struct iwl_mvm_loc_entry *entry;1505 const u8 *ies, *lci, *civic, *msr_ie;1506 size_t ies_len, lci_len = 0, civic_len = 0;1507 size_t baselen = IEEE80211_MIN_ACTION_SIZE +1508 sizeof(mgmt->u.action.u.ftm);1509 static const u8 rprt_type_lci = IEEE80211_SPCT_MSR_RPRT_TYPE_LCI;1510 static const u8 rprt_type_civic = IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC;1511 1512 if (len <= baselen)1513 return;1514 1515 lockdep_assert_held(&mvm->mutex);1516 1517 ies = mgmt->u.action.u.ftm.variable;1518 ies_len = len - baselen;1519 1520 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len,1521 &rprt_type_lci, 1, 4);1522 if (msr_ie) {1523 lci = msr_ie + 2;1524 lci_len = msr_ie[1];1525 }1526 1527 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len,1528 &rprt_type_civic, 1, 4);1529 if (msr_ie) {1530 civic = msr_ie + 2;1531 civic_len = msr_ie[1];1532 }1533 1534 entry = kmalloc(sizeof(*entry) + lci_len + civic_len, GFP_KERNEL);1535 if (!entry)1536 return;1537 1538 memcpy(entry->addr, mgmt->bssid, ETH_ALEN);1539 1540 entry->lci_len = lci_len;1541 if (lci_len)1542 memcpy(entry->buf, lci, lci_len);1543 1544 entry->civic_len = civic_len;1545 if (civic_len)1546 memcpy(entry->buf + lci_len, civic, civic_len);1547 1548 list_add_tail(&entry->list, &mvm->ftm_initiator.loc_list);1549}1550