| // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
| /* |
| * Copyright (C) 2015-2017 Intel Deutschland GmbH |
| * Copyright (C) 2018-2021 Intel Corporation |
| */ |
| #include <linux/etherdevice.h> |
| #include <linux/math64.h> |
| #include <net/cfg80211.h> |
| #include "mvm.h" |
| #include "iwl-io.h" |
| #include "iwl-prph.h" |
| #include "constants.h" |
| |
| struct iwl_mvm_loc_entry { |
| struct list_head list; |
| u8 addr[ETH_ALEN]; |
| u8 lci_len, civic_len; |
| u8 buf[]; |
| }; |
| |
| struct iwl_mvm_smooth_entry { |
| struct list_head list; |
| u8 addr[ETH_ALEN]; |
| s64 rtt_avg; |
| u64 host_time; |
| }; |
| |
| struct iwl_mvm_ftm_pasn_entry { |
| struct list_head list; |
| u8 addr[ETH_ALEN]; |
| u8 hltk[HLTK_11AZ_LEN]; |
| u8 tk[TK_11AZ_LEN]; |
| u8 cipher; |
| u8 tx_pn[IEEE80211_CCMP_PN_LEN]; |
| u8 rx_pn[IEEE80211_CCMP_PN_LEN]; |
| }; |
| |
| int iwl_mvm_ftm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| u8 *addr, u32 cipher, u8 *tk, u32 tk_len, |
| u8 *hltk, u32 hltk_len) |
| { |
| struct iwl_mvm_ftm_pasn_entry *pasn = kzalloc(sizeof(*pasn), |
| GFP_KERNEL); |
| u32 expected_tk_len; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (!pasn) |
| return -ENOBUFS; |
| |
| pasn->cipher = iwl_mvm_cipher_to_location_cipher(cipher); |
| |
| switch (pasn->cipher) { |
| case IWL_LOCATION_CIPHER_CCMP_128: |
| case IWL_LOCATION_CIPHER_GCMP_128: |
| expected_tk_len = WLAN_KEY_LEN_CCMP; |
| break; |
| case IWL_LOCATION_CIPHER_GCMP_256: |
| expected_tk_len = WLAN_KEY_LEN_GCMP_256; |
| break; |
| default: |
| goto out; |
| } |
| |
| /* |
| * If associated to this AP and already have security context, |
| * the TK is already configured for this station, so it |
| * shouldn't be set again here. |
| */ |
| if (vif->bss_conf.assoc && |
| !memcmp(addr, vif->bss_conf.bssid, ETH_ALEN)) { |
| struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| struct ieee80211_sta *sta; |
| |
| rcu_read_lock(); |
| sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); |
| if (!IS_ERR_OR_NULL(sta) && sta->mfp) |
| expected_tk_len = 0; |
| rcu_read_unlock(); |
| } |
| |
| if (tk_len != expected_tk_len || hltk_len != sizeof(pasn->hltk)) { |
| IWL_ERR(mvm, "Invalid key length: tk_len=%u hltk_len=%u\n", |
| tk_len, hltk_len); |
| goto out; |
| } |
| |
| memcpy(pasn->addr, addr, sizeof(pasn->addr)); |
| memcpy(pasn->hltk, hltk, sizeof(pasn->hltk)); |
| |
| if (tk && tk_len) |
| memcpy(pasn->tk, tk, sizeof(pasn->tk)); |
| |
| list_add_tail(&pasn->list, &mvm->ftm_initiator.pasn_list); |
| return 0; |
| out: |
| kfree(pasn); |
| return -EINVAL; |
| } |
| |
| void iwl_mvm_ftm_remove_pasn_sta(struct iwl_mvm *mvm, u8 *addr) |
| { |
| struct iwl_mvm_ftm_pasn_entry *entry, *prev; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| list_for_each_entry_safe(entry, prev, &mvm->ftm_initiator.pasn_list, |
| list) { |
| if (memcmp(entry->addr, addr, sizeof(entry->addr))) |
| continue; |
| |
| list_del(&entry->list); |
| kfree(entry); |
| return; |
| } |
| } |
| |
| static void iwl_mvm_ftm_reset(struct iwl_mvm *mvm) |
| { |
| struct iwl_mvm_loc_entry *e, *t; |
| |
| mvm->ftm_initiator.req = NULL; |
| mvm->ftm_initiator.req_wdev = NULL; |
| memset(mvm->ftm_initiator.responses, 0, |
| sizeof(mvm->ftm_initiator.responses)); |
| |
| list_for_each_entry_safe(e, t, &mvm->ftm_initiator.loc_list, list) { |
| list_del(&e->list); |
| kfree(e); |
| } |
| } |
| |
| void iwl_mvm_ftm_restart(struct iwl_mvm *mvm) |
| { |
| struct cfg80211_pmsr_result result = { |
| .status = NL80211_PMSR_STATUS_FAILURE, |
| .final = 1, |
| .host_time = ktime_get_boottime_ns(), |
| .type = NL80211_PMSR_TYPE_FTM, |
| }; |
| int i; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (!mvm->ftm_initiator.req) |
| return; |
| |
| for (i = 0; i < mvm->ftm_initiator.req->n_peers; i++) { |
| memcpy(result.addr, mvm->ftm_initiator.req->peers[i].addr, |
| ETH_ALEN); |
| result.ftm.burst_index = mvm->ftm_initiator.responses[i]; |
| |
| cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev, |
| mvm->ftm_initiator.req, |
| &result, GFP_KERNEL); |
| } |
| |
| cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev, |
| mvm->ftm_initiator.req, GFP_KERNEL); |
| iwl_mvm_ftm_reset(mvm); |
| } |
| |
| void iwl_mvm_ftm_initiator_smooth_config(struct iwl_mvm *mvm) |
| { |
| INIT_LIST_HEAD(&mvm->ftm_initiator.smooth.resp); |
| |
| IWL_DEBUG_INFO(mvm, |
| "enable=%u, alpha=%u, age_jiffies=%u, thresh=(%u:%u)\n", |
| IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH, |
| IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA, |
| IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * HZ, |
| IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT, |
| IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT); |
| } |
| |
| void iwl_mvm_ftm_initiator_smooth_stop(struct iwl_mvm *mvm) |
| { |
| struct iwl_mvm_smooth_entry *se, *st; |
| |
| list_for_each_entry_safe(se, st, &mvm->ftm_initiator.smooth.resp, |
| list) { |
| list_del(&se->list); |
| kfree(se); |
| } |
| } |
| |
| static int |
| iwl_ftm_range_request_status_to_err(enum iwl_tof_range_request_status s) |
| { |
| switch (s) { |
| case IWL_TOF_RANGE_REQUEST_STATUS_SUCCESS: |
| return 0; |
| case IWL_TOF_RANGE_REQUEST_STATUS_BUSY: |
| return -EBUSY; |
| default: |
| WARN_ON_ONCE(1); |
| return -EIO; |
| } |
| } |
| |
| static void iwl_mvm_ftm_cmd_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct iwl_tof_range_req_cmd_v5 *cmd, |
| struct cfg80211_pmsr_request *req) |
| { |
| int i; |
| |
| cmd->request_id = req->cookie; |
| cmd->num_of_ap = req->n_peers; |
| |
| /* use maximum for "no timeout" or bigger than what we can do */ |
| if (!req->timeout || req->timeout > 255 * 100) |
| cmd->req_timeout = 255; |
| else |
| cmd->req_timeout = DIV_ROUND_UP(req->timeout, 100); |
| |
| /* |
| * We treat it always as random, since if not we'll |
| * have filled our local address there instead. |
| */ |
| cmd->macaddr_random = 1; |
| memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN); |
| for (i = 0; i < ETH_ALEN; i++) |
| cmd->macaddr_mask[i] = ~req->mac_addr_mask[i]; |
| |
| if (vif->bss_conf.assoc) |
| memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN); |
| else |
| eth_broadcast_addr(cmd->range_req_bssid); |
| } |
| |
| static void iwl_mvm_ftm_cmd_common(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif, |
| struct iwl_tof_range_req_cmd_v9 *cmd, |
| struct cfg80211_pmsr_request *req) |
| { |
| int i; |
| |
| cmd->initiator_flags = |
| cpu_to_le32(IWL_TOF_INITIATOR_FLAGS_MACADDR_RANDOM | |
| IWL_TOF_INITIATOR_FLAGS_NON_ASAP_SUPPORT); |
| cmd->request_id = req->cookie; |
| cmd->num_of_ap = req->n_peers; |
| |
| /* |
| * Use a large value for "no timeout". Don't use the maximum value |
| * because of fw limitations. |
| */ |
| if (req->timeout) |
| cmd->req_timeout_ms = cpu_to_le32(req->timeout); |
| else |
| cmd->req_timeout_ms = cpu_to_le32(0xfffff); |
| |
| memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN); |
| for (i = 0; i < ETH_ALEN; i++) |
| cmd->macaddr_mask[i] = ~req->mac_addr_mask[i]; |
| |
| if (vif->bss_conf.assoc) { |
| memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN); |
| |
| /* AP's TSF is only relevant if associated */ |
| for (i = 0; i < req->n_peers; i++) { |
| if (req->peers[i].report_ap_tsf) { |
| struct iwl_mvm_vif *mvmvif = |
| iwl_mvm_vif_from_mac80211(vif); |
| |
| cmd->tsf_mac_id = cpu_to_le32(mvmvif->id); |
| return; |
| } |
| } |
| } else { |
| eth_broadcast_addr(cmd->range_req_bssid); |
| } |
| |
| /* Don't report AP's TSF */ |
| cmd->tsf_mac_id = cpu_to_le32(0xff); |
| } |
| |
| static void iwl_mvm_ftm_cmd_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct iwl_tof_range_req_cmd_v8 *cmd, |
| struct cfg80211_pmsr_request *req) |
| { |
| iwl_mvm_ftm_cmd_common(mvm, vif, (void *)cmd, req); |
| } |
| |
| static int |
| iwl_mvm_ftm_target_chandef_v1(struct iwl_mvm *mvm, |
| struct cfg80211_pmsr_request_peer *peer, |
| u8 *channel, u8 *bandwidth, |
| u8 *ctrl_ch_position) |
| { |
| u32 freq = peer->chandef.chan->center_freq; |
| |
| *channel = ieee80211_frequency_to_channel(freq); |
| |
| switch (peer->chandef.width) { |
| case NL80211_CHAN_WIDTH_20_NOHT: |
| *bandwidth = IWL_TOF_BW_20_LEGACY; |
| break; |
| case NL80211_CHAN_WIDTH_20: |
| *bandwidth = IWL_TOF_BW_20_HT; |
| break; |
| case NL80211_CHAN_WIDTH_40: |
| *bandwidth = IWL_TOF_BW_40; |
| break; |
| case NL80211_CHAN_WIDTH_80: |
| *bandwidth = IWL_TOF_BW_80; |
| break; |
| default: |
| IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n", |
| peer->chandef.width); |
| return -EINVAL; |
| } |
| |
| *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ? |
| iwl_mvm_get_ctrl_pos(&peer->chandef) : 0; |
| |
| return 0; |
| } |
| |
| static int |
| iwl_mvm_ftm_target_chandef_v2(struct iwl_mvm *mvm, |
| struct cfg80211_pmsr_request_peer *peer, |
| u8 *channel, u8 *format_bw, |
| u8 *ctrl_ch_position) |
| { |
| u32 freq = peer->chandef.chan->center_freq; |
| u8 cmd_ver; |
| |
| *channel = ieee80211_frequency_to_channel(freq); |
| |
| switch (peer->chandef.width) { |
| case NL80211_CHAN_WIDTH_20_NOHT: |
| *format_bw = IWL_LOCATION_FRAME_FORMAT_LEGACY; |
| *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS; |
| break; |
| case NL80211_CHAN_WIDTH_20: |
| *format_bw = IWL_LOCATION_FRAME_FORMAT_HT; |
| *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS; |
| break; |
| case NL80211_CHAN_WIDTH_40: |
| *format_bw = IWL_LOCATION_FRAME_FORMAT_HT; |
| *format_bw |= IWL_LOCATION_BW_40MHZ << LOCATION_BW_POS; |
| break; |
| case NL80211_CHAN_WIDTH_80: |
| *format_bw = IWL_LOCATION_FRAME_FORMAT_VHT; |
| *format_bw |= IWL_LOCATION_BW_80MHZ << LOCATION_BW_POS; |
| break; |
| case NL80211_CHAN_WIDTH_160: |
| cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LOCATION_GROUP, |
| TOF_RANGE_REQ_CMD, |
| IWL_FW_CMD_VER_UNKNOWN); |
| |
| if (cmd_ver >= 13) { |
| *format_bw = IWL_LOCATION_FRAME_FORMAT_HE; |
| *format_bw |= IWL_LOCATION_BW_160MHZ << LOCATION_BW_POS; |
| break; |
| } |
| fallthrough; |
| default: |
| IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n", |
| peer->chandef.width); |
| return -EINVAL; |
| } |
| |
| /* non EDCA based measurement must use HE preamble */ |
| if (peer->ftm.trigger_based || peer->ftm.non_trigger_based) |
| *format_bw |= IWL_LOCATION_FRAME_FORMAT_HE; |
| |
| *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ? |
| iwl_mvm_get_ctrl_pos(&peer->chandef) : 0; |
| |
| return 0; |
| } |
| |
| static int |
| iwl_mvm_ftm_put_target_v2(struct iwl_mvm *mvm, |
| struct cfg80211_pmsr_request_peer *peer, |
| struct iwl_tof_range_req_ap_entry_v2 *target) |
| { |
| int ret; |
| |
| ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num, |
| &target->bandwidth, |
| &target->ctrl_ch_position); |
| if (ret) |
| return ret; |
| |
| memcpy(target->bssid, peer->addr, ETH_ALEN); |
| target->burst_period = |
| cpu_to_le16(peer->ftm.burst_period); |
| target->samples_per_burst = peer->ftm.ftms_per_burst; |
| target->num_of_bursts = peer->ftm.num_bursts_exp; |
| target->measure_type = 0; /* regular two-sided FTM */ |
| target->retries_per_sample = peer->ftm.ftmr_retries; |
| target->asap_mode = peer->ftm.asap; |
| target->enable_dyn_ack = IWL_MVM_FTM_INITIATOR_DYNACK; |
| |
| if (peer->ftm.request_lci) |
| target->location_req |= IWL_TOF_LOC_LCI; |
| if (peer->ftm.request_civicloc) |
| target->location_req |= IWL_TOF_LOC_CIVIC; |
| |
| target->algo_type = IWL_MVM_FTM_INITIATOR_ALGO; |
| |
| return 0; |
| } |
| |
| #define FTM_PUT_FLAG(flag) (target->initiator_ap_flags |= \ |
| cpu_to_le32(IWL_INITIATOR_AP_FLAGS_##flag)) |
| |
| static void |
| iwl_mvm_ftm_put_target_common(struct iwl_mvm *mvm, |
| struct cfg80211_pmsr_request_peer *peer, |
| struct iwl_tof_range_req_ap_entry_v6 *target) |
| { |
| memcpy(target->bssid, peer->addr, ETH_ALEN); |
| target->burst_period = |
| cpu_to_le16(peer->ftm.burst_period); |
| target->samples_per_burst = peer->ftm.ftms_per_burst; |
| target->num_of_bursts = peer->ftm.num_bursts_exp; |
| target->ftmr_max_retries = peer->ftm.ftmr_retries; |
| target->initiator_ap_flags = cpu_to_le32(0); |
| |
| if (peer->ftm.asap) |
| FTM_PUT_FLAG(ASAP); |
| |
| if (peer->ftm.request_lci) |
| FTM_PUT_FLAG(LCI_REQUEST); |
| |
| if (peer->ftm.request_civicloc) |
| FTM_PUT_FLAG(CIVIC_REQUEST); |
| |
| if (IWL_MVM_FTM_INITIATOR_DYNACK) |
| FTM_PUT_FLAG(DYN_ACK); |
| |
| if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_LINEAR_REG) |
| FTM_PUT_FLAG(ALGO_LR); |
| else if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_FFT) |
| FTM_PUT_FLAG(ALGO_FFT); |
| |
| if (peer->ftm.trigger_based) |
| FTM_PUT_FLAG(TB); |
| else if (peer->ftm.non_trigger_based) |
| FTM_PUT_FLAG(NON_TB); |
| |
| if ((peer->ftm.trigger_based || peer->ftm.non_trigger_based) && |
| peer->ftm.lmr_feedback) |
| FTM_PUT_FLAG(LMR_FEEDBACK); |
| } |
| |
| static int |
| iwl_mvm_ftm_put_target_v3(struct iwl_mvm *mvm, |
| struct cfg80211_pmsr_request_peer *peer, |
| struct iwl_tof_range_req_ap_entry_v3 *target) |
| { |
| int ret; |
| |
| ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num, |
| &target->bandwidth, |
| &target->ctrl_ch_position); |
| if (ret) |
| return ret; |
| |
| /* |
| * Versions 3 and 4 has some common fields, so |
| * iwl_mvm_ftm_put_target_common() can be used for version 7 too. |
| */ |
| iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target); |
| |
| return 0; |
| } |
| |
| static int |
| iwl_mvm_ftm_put_target_v4(struct iwl_mvm *mvm, |
| struct cfg80211_pmsr_request_peer *peer, |
| struct iwl_tof_range_req_ap_entry_v4 *target) |
| { |
| int ret; |
| |
| ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num, |
| &target->format_bw, |
| &target->ctrl_ch_position); |
| if (ret) |
| return ret; |
| |
| iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target); |
| |
| return 0; |
| } |
| |
| static int |
| iwl_mvm_ftm_put_target(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request_peer *peer, |
| struct iwl_tof_range_req_ap_entry_v6 *target) |
| { |
| int ret; |
| |
| ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num, |
| &target->format_bw, |
| &target->ctrl_ch_position); |
| if (ret) |
| return ret; |
| |
| iwl_mvm_ftm_put_target_common(mvm, peer, target); |
| |
| if (vif->bss_conf.assoc && |
| !memcmp(peer->addr, vif->bss_conf.bssid, ETH_ALEN)) { |
| struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| struct ieee80211_sta *sta; |
| |
| rcu_read_lock(); |
| |
| sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); |
| if (sta->mfp) |
| FTM_PUT_FLAG(PMF); |
| |
| rcu_read_unlock(); |
| |
| target->sta_id = mvmvif->ap_sta_id; |
| } else { |
| target->sta_id = IWL_MVM_INVALID_STA; |
| } |
| |
| /* |
| * TODO: Beacon interval is currently unknown, so use the common value |
| * of 100 TUs. |
| */ |
| target->beacon_interval = cpu_to_le16(100); |
| return 0; |
| } |
| |
| static int iwl_mvm_ftm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *hcmd) |
| { |
| u32 status; |
| int err = iwl_mvm_send_cmd_status(mvm, hcmd, &status); |
| |
| if (!err && status) { |
| IWL_ERR(mvm, "FTM range request command failure, status: %u\n", |
| status); |
| err = iwl_ftm_range_request_status_to_err(status); |
| } |
| |
| return err; |
| } |
| |
| static int iwl_mvm_ftm_start_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request *req) |
| { |
| struct iwl_tof_range_req_cmd_v5 cmd_v5; |
| struct iwl_host_cmd hcmd = { |
| .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), |
| .dataflags[0] = IWL_HCMD_DFL_DUP, |
| .data[0] = &cmd_v5, |
| .len[0] = sizeof(cmd_v5), |
| }; |
| u8 i; |
| int err; |
| |
| iwl_mvm_ftm_cmd_v5(mvm, vif, &cmd_v5, req); |
| |
| for (i = 0; i < cmd_v5.num_of_ap; i++) { |
| struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; |
| |
| err = iwl_mvm_ftm_put_target_v2(mvm, peer, &cmd_v5.ap[i]); |
| if (err) |
| return err; |
| } |
| |
| return iwl_mvm_ftm_send_cmd(mvm, &hcmd); |
| } |
| |
| static int iwl_mvm_ftm_start_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request *req) |
| { |
| struct iwl_tof_range_req_cmd_v7 cmd_v7; |
| struct iwl_host_cmd hcmd = { |
| .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), |
| .dataflags[0] = IWL_HCMD_DFL_DUP, |
| .data[0] = &cmd_v7, |
| .len[0] = sizeof(cmd_v7), |
| }; |
| u8 i; |
| int err; |
| |
| /* |
| * Versions 7 and 8 has the same structure except from the responders |
| * list, so iwl_mvm_ftm_cmd() can be used for version 7 too. |
| */ |
| iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd_v7, req); |
| |
| for (i = 0; i < cmd_v7.num_of_ap; i++) { |
| struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; |
| |
| err = iwl_mvm_ftm_put_target_v3(mvm, peer, &cmd_v7.ap[i]); |
| if (err) |
| return err; |
| } |
| |
| return iwl_mvm_ftm_send_cmd(mvm, &hcmd); |
| } |
| |
| static int iwl_mvm_ftm_start_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request *req) |
| { |
| struct iwl_tof_range_req_cmd_v8 cmd; |
| struct iwl_host_cmd hcmd = { |
| .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), |
| .dataflags[0] = IWL_HCMD_DFL_DUP, |
| .data[0] = &cmd, |
| .len[0] = sizeof(cmd), |
| }; |
| u8 i; |
| int err; |
| |
| iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd, req); |
| |
| for (i = 0; i < cmd.num_of_ap; i++) { |
| struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; |
| |
| err = iwl_mvm_ftm_put_target_v4(mvm, peer, &cmd.ap[i]); |
| if (err) |
| return err; |
| } |
| |
| return iwl_mvm_ftm_send_cmd(mvm, &hcmd); |
| } |
| |
| static int iwl_mvm_ftm_start_v9(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request *req) |
| { |
| struct iwl_tof_range_req_cmd_v9 cmd; |
| struct iwl_host_cmd hcmd = { |
| .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), |
| .dataflags[0] = IWL_HCMD_DFL_DUP, |
| .data[0] = &cmd, |
| .len[0] = sizeof(cmd), |
| }; |
| u8 i; |
| int err; |
| |
| iwl_mvm_ftm_cmd_common(mvm, vif, &cmd, req); |
| |
| for (i = 0; i < cmd.num_of_ap; i++) { |
| struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; |
| struct iwl_tof_range_req_ap_entry_v6 *target = &cmd.ap[i]; |
| |
| err = iwl_mvm_ftm_put_target(mvm, vif, peer, target); |
| if (err) |
| return err; |
| } |
| |
| return iwl_mvm_ftm_send_cmd(mvm, &hcmd); |
| } |
| |
| static void iter(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta, |
| struct ieee80211_key_conf *key, |
| void *data) |
| { |
| struct iwl_tof_range_req_ap_entry_v6 *target = data; |
| |
| if (!sta || memcmp(sta->addr, target->bssid, ETH_ALEN)) |
| return; |
| |
| WARN_ON(!sta->mfp); |
| |
| if (WARN_ON(key->keylen > sizeof(target->tk))) |
| return; |
| |
| memcpy(target->tk, key->key, key->keylen); |
| target->cipher = iwl_mvm_cipher_to_location_cipher(key->cipher); |
| WARN_ON(target->cipher == IWL_LOCATION_CIPHER_INVALID); |
| } |
| |
| static void |
| iwl_mvm_ftm_set_secured_ranging(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct iwl_tof_range_req_ap_entry_v7 *target) |
| { |
| struct iwl_mvm_ftm_pasn_entry *entry; |
| u32 flags = le32_to_cpu(target->initiator_ap_flags); |
| |
| if (!(flags & (IWL_INITIATOR_AP_FLAGS_NON_TB | |
| IWL_INITIATOR_AP_FLAGS_TB))) |
| return; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) { |
| if (memcmp(entry->addr, target->bssid, sizeof(entry->addr))) |
| continue; |
| |
| target->cipher = entry->cipher; |
| memcpy(target->hltk, entry->hltk, sizeof(target->hltk)); |
| |
| if (vif->bss_conf.assoc && |
| !memcmp(vif->bss_conf.bssid, target->bssid, |
| sizeof(target->bssid))) |
| ieee80211_iter_keys(mvm->hw, vif, iter, target); |
| else |
| memcpy(target->tk, entry->tk, sizeof(target->tk)); |
| |
| memcpy(target->rx_pn, entry->rx_pn, sizeof(target->rx_pn)); |
| memcpy(target->tx_pn, entry->tx_pn, sizeof(target->tx_pn)); |
| |
| target->initiator_ap_flags |= |
| cpu_to_le32(IWL_INITIATOR_AP_FLAGS_SECURED); |
| return; |
| } |
| } |
| |
| static int |
| iwl_mvm_ftm_put_target_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request_peer *peer, |
| struct iwl_tof_range_req_ap_entry_v7 *target) |
| { |
| int err = iwl_mvm_ftm_put_target(mvm, vif, peer, (void *)target); |
| if (err) |
| return err; |
| |
| iwl_mvm_ftm_set_secured_ranging(mvm, vif, target); |
| return err; |
| } |
| |
| static int iwl_mvm_ftm_start_v11(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request *req) |
| { |
| struct iwl_tof_range_req_cmd_v11 cmd; |
| struct iwl_host_cmd hcmd = { |
| .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), |
| .dataflags[0] = IWL_HCMD_DFL_DUP, |
| .data[0] = &cmd, |
| .len[0] = sizeof(cmd), |
| }; |
| u8 i; |
| int err; |
| |
| iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); |
| |
| for (i = 0; i < cmd.num_of_ap; i++) { |
| struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; |
| struct iwl_tof_range_req_ap_entry_v7 *target = &cmd.ap[i]; |
| |
| err = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, target); |
| if (err) |
| return err; |
| } |
| |
| return iwl_mvm_ftm_send_cmd(mvm, &hcmd); |
| } |
| |
| static void |
| iwl_mvm_ftm_set_ndp_params(struct iwl_mvm *mvm, |
| struct iwl_tof_range_req_ap_entry_v8 *target) |
| { |
| /* Only 2 STS are supported on Tx */ |
| u32 i2r_max_sts = IWL_MVM_FTM_I2R_MAX_STS > 1 ? 1 : |
| IWL_MVM_FTM_I2R_MAX_STS; |
| |
| target->r2i_ndp_params = IWL_MVM_FTM_R2I_MAX_REP | |
| (IWL_MVM_FTM_R2I_MAX_STS << IWL_LOCATION_MAX_STS_POS); |
| target->i2r_ndp_params = IWL_MVM_FTM_I2R_MAX_REP | |
| (i2r_max_sts << IWL_LOCATION_MAX_STS_POS); |
| target->r2i_max_total_ltf = IWL_MVM_FTM_R2I_MAX_TOTAL_LTF; |
| target->i2r_max_total_ltf = IWL_MVM_FTM_I2R_MAX_TOTAL_LTF; |
| } |
| |
| static int |
| iwl_mvm_ftm_put_target_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request_peer *peer, |
| struct iwl_tof_range_req_ap_entry_v8 *target) |
| { |
| u32 flags; |
| int ret = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, (void *)target); |
| |
| if (ret) |
| return ret; |
| |
| iwl_mvm_ftm_set_ndp_params(mvm, target); |
| |
| /* |
| * If secure LTF is turned off, replace the flag with PMF only |
| */ |
| flags = le32_to_cpu(target->initiator_ap_flags); |
| if ((flags & IWL_INITIATOR_AP_FLAGS_SECURED) && |
| !IWL_MVM_FTM_INITIATOR_SECURE_LTF) { |
| flags &= ~IWL_INITIATOR_AP_FLAGS_SECURED; |
| flags |= IWL_INITIATOR_AP_FLAGS_PMF; |
| target->initiator_ap_flags = cpu_to_le32(flags); |
| } |
| |
| return 0; |
| } |
| |
| static int iwl_mvm_ftm_start_v12(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request *req) |
| { |
| struct iwl_tof_range_req_cmd_v12 cmd; |
| struct iwl_host_cmd hcmd = { |
| .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), |
| .dataflags[0] = IWL_HCMD_DFL_DUP, |
| .data[0] = &cmd, |
| .len[0] = sizeof(cmd), |
| }; |
| u8 i; |
| int err; |
| |
| iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); |
| |
| for (i = 0; i < cmd.num_of_ap; i++) { |
| struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; |
| struct iwl_tof_range_req_ap_entry_v8 *target = &cmd.ap[i]; |
| |
| err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, target); |
| if (err) |
| return err; |
| } |
| |
| return iwl_mvm_ftm_send_cmd(mvm, &hcmd); |
| } |
| |
| static int iwl_mvm_ftm_start_v13(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request *req) |
| { |
| struct iwl_tof_range_req_cmd_v13 cmd; |
| struct iwl_host_cmd hcmd = { |
| .id = iwl_cmd_id(TOF_RANGE_REQ_CMD, LOCATION_GROUP, 0), |
| .dataflags[0] = IWL_HCMD_DFL_DUP, |
| .data[0] = &cmd, |
| .len[0] = sizeof(cmd), |
| }; |
| u8 i; |
| int err; |
| |
| iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req); |
| |
| for (i = 0; i < cmd.num_of_ap; i++) { |
| struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; |
| struct iwl_tof_range_req_ap_entry_v9 *target = &cmd.ap[i]; |
| |
| err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, (void *)target); |
| if (err) |
| return err; |
| |
| if (peer->ftm.trigger_based || peer->ftm.non_trigger_based) |
| target->bss_color = peer->ftm.bss_color; |
| |
| if (peer->ftm.non_trigger_based) { |
| target->min_time_between_msr = |
| cpu_to_le16(IWL_MVM_FTM_NON_TB_MIN_TIME_BETWEEN_MSR); |
| target->burst_period = |
| cpu_to_le16(IWL_MVM_FTM_NON_TB_MAX_TIME_BETWEEN_MSR); |
| } else { |
| target->min_time_between_msr = cpu_to_le16(0); |
| } |
| |
| target->band = |
| iwl_mvm_phy_band_from_nl80211(peer->chandef.chan->band); |
| } |
| |
| return iwl_mvm_ftm_send_cmd(mvm, &hcmd); |
| } |
| |
| int iwl_mvm_ftm_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct cfg80211_pmsr_request *req) |
| { |
| bool new_api = fw_has_api(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ); |
| int err; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (mvm->ftm_initiator.req) |
| return -EBUSY; |
| |
| if (new_api) { |
| u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LOCATION_GROUP, |
| TOF_RANGE_REQ_CMD, |
| IWL_FW_CMD_VER_UNKNOWN); |
| |
| switch (cmd_ver) { |
| case 13: |
| err = iwl_mvm_ftm_start_v13(mvm, vif, req); |
| break; |
| case 12: |
| err = iwl_mvm_ftm_start_v12(mvm, vif, req); |
| break; |
| case 11: |
| err = iwl_mvm_ftm_start_v11(mvm, vif, req); |
| break; |
| case 9: |
| case 10: |
| err = iwl_mvm_ftm_start_v9(mvm, vif, req); |
| break; |
| case 8: |
| err = iwl_mvm_ftm_start_v8(mvm, vif, req); |
| break; |
| default: |
| err = iwl_mvm_ftm_start_v7(mvm, vif, req); |
| break; |
| } |
| } else { |
| err = iwl_mvm_ftm_start_v5(mvm, vif, req); |
| } |
| |
| if (!err) { |
| mvm->ftm_initiator.req = req; |
| mvm->ftm_initiator.req_wdev = ieee80211_vif_to_wdev(vif); |
| } |
| |
| return err; |
| } |
| |
| void iwl_mvm_ftm_abort(struct iwl_mvm *mvm, struct cfg80211_pmsr_request *req) |
| { |
| struct iwl_tof_range_abort_cmd cmd = { |
| .request_id = req->cookie, |
| }; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (req != mvm->ftm_initiator.req) |
| return; |
| |
| iwl_mvm_ftm_reset(mvm); |
| |
| if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_RANGE_ABORT_CMD, |
| LOCATION_GROUP, 0), |
| 0, sizeof(cmd), &cmd)) |
| IWL_ERR(mvm, "failed to abort FTM process\n"); |
| } |
| |
| static int iwl_mvm_ftm_find_peer(struct cfg80211_pmsr_request *req, |
| const u8 *addr) |
| { |
| int i; |
| |
| for (i = 0; i < req->n_peers; i++) { |
| struct cfg80211_pmsr_request_peer *peer = &req->peers[i]; |
| |
| if (ether_addr_equal_unaligned(peer->addr, addr)) |
| return i; |
| } |
| |
| return -ENOENT; |
| } |
| |
| static u64 iwl_mvm_ftm_get_host_time(struct iwl_mvm *mvm, __le32 fw_gp2_ts) |
| { |
| u32 gp2_ts = le32_to_cpu(fw_gp2_ts); |
| u32 curr_gp2, diff; |
| u64 now_from_boot_ns; |
| |
| iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2, |
| &now_from_boot_ns, NULL); |
| |
| if (curr_gp2 >= gp2_ts) |
| diff = curr_gp2 - gp2_ts; |
| else |
| diff = curr_gp2 + (U32_MAX - gp2_ts + 1); |
| |
| return now_from_boot_ns - (u64)diff * 1000; |
| } |
| |
| static void iwl_mvm_ftm_get_lci_civic(struct iwl_mvm *mvm, |
| struct cfg80211_pmsr_result *res) |
| { |
| struct iwl_mvm_loc_entry *entry; |
| |
| list_for_each_entry(entry, &mvm->ftm_initiator.loc_list, list) { |
| if (!ether_addr_equal_unaligned(res->addr, entry->addr)) |
| continue; |
| |
| if (entry->lci_len) { |
| res->ftm.lci_len = entry->lci_len; |
| res->ftm.lci = entry->buf; |
| } |
| |
| if (entry->civic_len) { |
| res->ftm.civicloc_len = entry->civic_len; |
| res->ftm.civicloc = entry->buf + entry->lci_len; |
| } |
| |
| /* we found the entry we needed */ |
| break; |
| } |
| } |
| |
| static int iwl_mvm_ftm_range_resp_valid(struct iwl_mvm *mvm, u8 request_id, |
| u8 num_of_aps) |
| { |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (request_id != (u8)mvm->ftm_initiator.req->cookie) { |
| IWL_ERR(mvm, "Request ID mismatch, got %u, active %u\n", |
| request_id, (u8)mvm->ftm_initiator.req->cookie); |
| return -EINVAL; |
| } |
| |
| if (num_of_aps > mvm->ftm_initiator.req->n_peers) { |
| IWL_ERR(mvm, "FTM range response invalid\n"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static void iwl_mvm_ftm_rtt_smoothing(struct iwl_mvm *mvm, |
| struct cfg80211_pmsr_result *res) |
| { |
| struct iwl_mvm_smooth_entry *resp; |
| s64 rtt_avg, rtt = res->ftm.rtt_avg; |
| u32 undershoot, overshoot; |
| u8 alpha; |
| bool found; |
| |
| if (!IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH) |
| return; |
| |
| WARN_ON(rtt < 0); |
| |
| if (res->status != NL80211_PMSR_STATUS_SUCCESS) { |
| IWL_DEBUG_INFO(mvm, |
| ": %pM: ignore failed measurement. Status=%u\n", |
| res->addr, res->status); |
| return; |
| } |
| |
| found = false; |
| list_for_each_entry(resp, &mvm->ftm_initiator.smooth.resp, list) { |
| if (!memcmp(res->addr, resp->addr, ETH_ALEN)) { |
| found = true; |
| break; |
| } |
| } |
| |
| if (!found) { |
| resp = kzalloc(sizeof(*resp), GFP_KERNEL); |
| if (!resp) |
| return; |
| |
| memcpy(resp->addr, res->addr, ETH_ALEN); |
| list_add_tail(&resp->list, &mvm->ftm_initiator.smooth.resp); |
| |
| resp->rtt_avg = rtt; |
| |
| IWL_DEBUG_INFO(mvm, "new: %pM: rtt_avg=%lld\n", |
| resp->addr, resp->rtt_avg); |
| goto update_time; |
| } |
| |
| if (res->host_time - resp->host_time > |
| IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * 1000000000) { |
| resp->rtt_avg = rtt; |
| |
| IWL_DEBUG_INFO(mvm, "expired: %pM: rtt_avg=%lld\n", |
| resp->addr, resp->rtt_avg); |
| goto update_time; |
| } |
| |
| /* Smooth the results based on the tracked RTT average */ |
| undershoot = IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT; |
| overshoot = IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT; |
| alpha = IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA; |
| |
| rtt_avg = (alpha * rtt + (100 - alpha) * resp->rtt_avg) / 100; |
| |
| IWL_DEBUG_INFO(mvm, |
| "%pM: prev rtt_avg=%lld, new rtt_avg=%lld, rtt=%lld\n", |
| resp->addr, resp->rtt_avg, rtt_avg, rtt); |
| |
| /* |
| * update the responder's average RTT results regardless of |
| * the under/over shoot logic below |
| */ |
| resp->rtt_avg = rtt_avg; |
| |
| /* smooth the results */ |
| if (rtt_avg > rtt && (rtt_avg - rtt) > undershoot) { |
| res->ftm.rtt_avg = rtt_avg; |
| |
| IWL_DEBUG_INFO(mvm, |
| "undershoot: val=%lld\n", |
| (rtt_avg - rtt)); |
| } else if (rtt_avg < rtt && (rtt - rtt_avg) > |
| overshoot) { |
| res->ftm.rtt_avg = rtt_avg; |
| IWL_DEBUG_INFO(mvm, |
| "overshoot: val=%lld\n", |
| (rtt - rtt_avg)); |
| } |
| |
| update_time: |
| resp->host_time = res->host_time; |
| } |
| |
| static void iwl_mvm_debug_range_resp(struct iwl_mvm *mvm, u8 index, |
| struct cfg80211_pmsr_result *res) |
| { |
| s64 rtt_avg = div_s64(res->ftm.rtt_avg * 100, 6666); |
| |
| IWL_DEBUG_INFO(mvm, "entry %d\n", index); |
| IWL_DEBUG_INFO(mvm, "\tstatus: %d\n", res->status); |
| IWL_DEBUG_INFO(mvm, "\tBSSID: %pM\n", res->addr); |
| IWL_DEBUG_INFO(mvm, "\thost time: %llu\n", res->host_time); |
| IWL_DEBUG_INFO(mvm, "\tburst index: %hhu\n", res->ftm.burst_index); |
| IWL_DEBUG_INFO(mvm, "\tsuccess num: %u\n", res->ftm.num_ftmr_successes); |
| IWL_DEBUG_INFO(mvm, "\trssi: %d\n", res->ftm.rssi_avg); |
| IWL_DEBUG_INFO(mvm, "\trssi spread: %hhu\n", res->ftm.rssi_spread); |
| IWL_DEBUG_INFO(mvm, "\trtt: %lld\n", res->ftm.rtt_avg); |
| IWL_DEBUG_INFO(mvm, "\trtt var: %llu\n", res->ftm.rtt_variance); |
| IWL_DEBUG_INFO(mvm, "\trtt spread: %llu\n", res->ftm.rtt_spread); |
| IWL_DEBUG_INFO(mvm, "\tdistance: %lld\n", rtt_avg); |
| } |
| |
| static void |
| iwl_mvm_ftm_pasn_update_pn(struct iwl_mvm *mvm, |
| struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap) |
| { |
| struct iwl_mvm_ftm_pasn_entry *entry; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) { |
| if (memcmp(fw_ap->bssid, entry->addr, sizeof(entry->addr))) |
| continue; |
| |
| memcpy(entry->rx_pn, fw_ap->rx_pn, sizeof(entry->rx_pn)); |
| memcpy(entry->tx_pn, fw_ap->tx_pn, sizeof(entry->tx_pn)); |
| return; |
| } |
| } |
| |
| static u8 iwl_mvm_ftm_get_range_resp_ver(struct iwl_mvm *mvm) |
| { |
| if (!fw_has_api(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ)) |
| return 5; |
| |
| /* Starting from version 8, the FW advertises the version */ |
| if (mvm->cmd_ver.range_resp >= 8) |
| return mvm->cmd_ver.range_resp; |
| else if (fw_has_api(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_API_FTM_RTT_ACCURACY)) |
| return 7; |
| |
| /* The first version of the new range request API */ |
| return 6; |
| } |
| |
| static bool iwl_mvm_ftm_resp_size_validation(u8 ver, unsigned int pkt_len) |
| { |
| switch (ver) { |
| case 9: |
| case 8: |
| return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v8); |
| case 7: |
| return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v7); |
| case 6: |
| return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v6); |
| case 5: |
| return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v5); |
| default: |
| WARN_ONCE(1, "FTM: unsupported range response version %u", ver); |
| return false; |
| } |
| } |
| |
| void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); |
| struct iwl_tof_range_rsp_ntfy_v5 *fw_resp_v5 = (void *)pkt->data; |
| struct iwl_tof_range_rsp_ntfy_v6 *fw_resp_v6 = (void *)pkt->data; |
| struct iwl_tof_range_rsp_ntfy_v7 *fw_resp_v7 = (void *)pkt->data; |
| struct iwl_tof_range_rsp_ntfy_v8 *fw_resp_v8 = (void *)pkt->data; |
| int i; |
| bool new_api = fw_has_api(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ); |
| u8 num_of_aps, last_in_batch; |
| u8 notif_ver = iwl_mvm_ftm_get_range_resp_ver(mvm); |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (!mvm->ftm_initiator.req) { |
| return; |
| } |
| |
| if (unlikely(!iwl_mvm_ftm_resp_size_validation(notif_ver, pkt_len))) |
| return; |
| |
| if (new_api) { |
| if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v8->request_id, |
| fw_resp_v8->num_of_aps)) |
| return; |
| |
| num_of_aps = fw_resp_v8->num_of_aps; |
| last_in_batch = fw_resp_v8->last_report; |
| } else { |
| if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v5->request_id, |
| fw_resp_v5->num_of_aps)) |
| return; |
| |
| num_of_aps = fw_resp_v5->num_of_aps; |
| last_in_batch = fw_resp_v5->last_in_batch; |
| } |
| |
| IWL_DEBUG_INFO(mvm, "Range response received\n"); |
| IWL_DEBUG_INFO(mvm, "request id: %lld, num of entries: %hhu\n", |
| mvm->ftm_initiator.req->cookie, num_of_aps); |
| |
| for (i = 0; i < num_of_aps && i < IWL_MVM_TOF_MAX_APS; i++) { |
| struct cfg80211_pmsr_result result = {}; |
| struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap; |
| int peer_idx; |
| |
| if (new_api) { |
| if (notif_ver >= 8) { |
| fw_ap = &fw_resp_v8->ap[i]; |
| iwl_mvm_ftm_pasn_update_pn(mvm, fw_ap); |
| } else if (notif_ver == 7) { |
| fw_ap = (void *)&fw_resp_v7->ap[i]; |
| } else { |
| fw_ap = (void *)&fw_resp_v6->ap[i]; |
| } |
| |
| result.final = fw_ap->last_burst; |
| result.ap_tsf = le32_to_cpu(fw_ap->start_tsf); |
| result.ap_tsf_valid = 1; |
| } else { |
| /* the first part is the same for old and new APIs */ |
| fw_ap = (void *)&fw_resp_v5->ap[i]; |
| /* |
| * FIXME: the firmware needs to report this, we don't |
| * even know the number of bursts the responder picked |
| * (if we asked it to) |
| */ |
| result.final = 0; |
| } |
| |
| peer_idx = iwl_mvm_ftm_find_peer(mvm->ftm_initiator.req, |
| fw_ap->bssid); |
| if (peer_idx < 0) { |
| IWL_WARN(mvm, |
| "Unknown address (%pM, target #%d) in FTM response\n", |
| fw_ap->bssid, i); |
| continue; |
| } |
| |
| switch (fw_ap->measure_status) { |
| case IWL_TOF_ENTRY_SUCCESS: |
| result.status = NL80211_PMSR_STATUS_SUCCESS; |
| break; |
| case IWL_TOF_ENTRY_TIMING_MEASURE_TIMEOUT: |
| result.status = NL80211_PMSR_STATUS_TIMEOUT; |
| break; |
| case IWL_TOF_ENTRY_NO_RESPONSE: |
| result.status = NL80211_PMSR_STATUS_FAILURE; |
| result.ftm.failure_reason = |
| NL80211_PMSR_FTM_FAILURE_NO_RESPONSE; |
| break; |
| case IWL_TOF_ENTRY_REQUEST_REJECTED: |
| result.status = NL80211_PMSR_STATUS_FAILURE; |
| result.ftm.failure_reason = |
| NL80211_PMSR_FTM_FAILURE_PEER_BUSY; |
| result.ftm.busy_retry_time = fw_ap->refusal_period; |
| break; |
| default: |
| result.status = NL80211_PMSR_STATUS_FAILURE; |
| result.ftm.failure_reason = |
| NL80211_PMSR_FTM_FAILURE_UNSPECIFIED; |
| break; |
| } |
| memcpy(result.addr, fw_ap->bssid, ETH_ALEN); |
| result.host_time = iwl_mvm_ftm_get_host_time(mvm, |
| fw_ap->timestamp); |
| result.type = NL80211_PMSR_TYPE_FTM; |
| result.ftm.burst_index = mvm->ftm_initiator.responses[peer_idx]; |
| mvm->ftm_initiator.responses[peer_idx]++; |
| result.ftm.rssi_avg = fw_ap->rssi; |
| result.ftm.rssi_avg_valid = 1; |
| result.ftm.rssi_spread = fw_ap->rssi_spread; |
| result.ftm.rssi_spread_valid = 1; |
| result.ftm.rtt_avg = (s32)le32_to_cpu(fw_ap->rtt); |
| result.ftm.rtt_avg_valid = 1; |
| result.ftm.rtt_variance = le32_to_cpu(fw_ap->rtt_variance); |
| result.ftm.rtt_variance_valid = 1; |
| result.ftm.rtt_spread = le32_to_cpu(fw_ap->rtt_spread); |
| result.ftm.rtt_spread_valid = 1; |
| |
| iwl_mvm_ftm_get_lci_civic(mvm, &result); |
| |
| iwl_mvm_ftm_rtt_smoothing(mvm, &result); |
| |
| cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev, |
| mvm->ftm_initiator.req, |
| &result, GFP_KERNEL); |
| |
| if (fw_has_api(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_API_FTM_RTT_ACCURACY)) |
| IWL_DEBUG_INFO(mvm, "RTT confidence: %hhu\n", |
| fw_ap->rttConfidence); |
| |
| iwl_mvm_debug_range_resp(mvm, i, &result); |
| } |
| |
| if (last_in_batch) { |
| cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev, |
| mvm->ftm_initiator.req, |
| GFP_KERNEL); |
| iwl_mvm_ftm_reset(mvm); |
| } |
| } |
| |
| void iwl_mvm_ftm_lc_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| const struct ieee80211_mgmt *mgmt = (void *)pkt->data; |
| size_t len = iwl_rx_packet_payload_len(pkt); |
| struct iwl_mvm_loc_entry *entry; |
| const u8 *ies, *lci, *civic, *msr_ie; |
| size_t ies_len, lci_len = 0, civic_len = 0; |
| size_t baselen = IEEE80211_MIN_ACTION_SIZE + |
| sizeof(mgmt->u.action.u.ftm); |
| static const u8 rprt_type_lci = IEEE80211_SPCT_MSR_RPRT_TYPE_LCI; |
| static const u8 rprt_type_civic = IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC; |
| |
| if (len <= baselen) |
| return; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| ies = mgmt->u.action.u.ftm.variable; |
| ies_len = len - baselen; |
| |
| msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len, |
| &rprt_type_lci, 1, 4); |
| if (msr_ie) { |
| lci = msr_ie + 2; |
| lci_len = msr_ie[1]; |
| } |
| |
| msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len, |
| &rprt_type_civic, 1, 4); |
| if (msr_ie) { |
| civic = msr_ie + 2; |
| civic_len = msr_ie[1]; |
| } |
| |
| entry = kmalloc(sizeof(*entry) + lci_len + civic_len, GFP_KERNEL); |
| if (!entry) |
| return; |
| |
| memcpy(entry->addr, mgmt->bssid, ETH_ALEN); |
| |
| entry->lci_len = lci_len; |
| if (lci_len) |
| memcpy(entry->buf, lci, lci_len); |
| |
| entry->civic_len = civic_len; |
| if (civic_len) |
| memcpy(entry->buf + lci_len, civic, civic_len); |
| |
| list_add_tail(&entry->list, &mvm->ftm_initiator.loc_list); |
| } |