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0001 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
0002 /*
0003  * Copyright (C) 2015-2017 Intel Deutschland GmbH
0004  * Copyright (C) 2018-2022 Intel Corporation
0005  */
0006 #include <linux/etherdevice.h>
0007 #include <linux/math64.h>
0008 #include <net/cfg80211.h>
0009 #include "mvm.h"
0010 #include "iwl-io.h"
0011 #include "iwl-prph.h"
0012 #include "constants.h"
0013 
0014 struct iwl_mvm_loc_entry {
0015     struct list_head list;
0016     u8 addr[ETH_ALEN];
0017     u8 lci_len, civic_len;
0018     u8 buf[];
0019 };
0020 
0021 struct iwl_mvm_smooth_entry {
0022     struct list_head list;
0023     u8 addr[ETH_ALEN];
0024     s64 rtt_avg;
0025     u64 host_time;
0026 };
0027 
0028 struct iwl_mvm_ftm_pasn_entry {
0029     struct list_head list;
0030     u8 addr[ETH_ALEN];
0031     u8 hltk[HLTK_11AZ_LEN];
0032     u8 tk[TK_11AZ_LEN];
0033     u8 cipher;
0034     u8 tx_pn[IEEE80211_CCMP_PN_LEN];
0035     u8 rx_pn[IEEE80211_CCMP_PN_LEN];
0036 };
0037 
0038 int iwl_mvm_ftm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0039                  u8 *addr, u32 cipher, u8 *tk, u32 tk_len,
0040                  u8 *hltk, u32 hltk_len)
0041 {
0042     struct iwl_mvm_ftm_pasn_entry *pasn = kzalloc(sizeof(*pasn),
0043                               GFP_KERNEL);
0044     u32 expected_tk_len;
0045 
0046     lockdep_assert_held(&mvm->mutex);
0047 
0048     if (!pasn)
0049         return -ENOBUFS;
0050 
0051     pasn->cipher = iwl_mvm_cipher_to_location_cipher(cipher);
0052 
0053     switch (pasn->cipher) {
0054     case IWL_LOCATION_CIPHER_CCMP_128:
0055     case IWL_LOCATION_CIPHER_GCMP_128:
0056         expected_tk_len = WLAN_KEY_LEN_CCMP;
0057         break;
0058     case IWL_LOCATION_CIPHER_GCMP_256:
0059         expected_tk_len = WLAN_KEY_LEN_GCMP_256;
0060         break;
0061     default:
0062         goto out;
0063     }
0064 
0065     /*
0066      * If associated to this AP and already have security context,
0067      * the TK is already configured for this station, so it
0068      * shouldn't be set again here.
0069      */
0070     if (vif->cfg.assoc &&
0071         !memcmp(addr, vif->bss_conf.bssid, ETH_ALEN)) {
0072         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
0073         struct ieee80211_sta *sta;
0074 
0075         rcu_read_lock();
0076         sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
0077         if (!IS_ERR_OR_NULL(sta) && sta->mfp)
0078             expected_tk_len = 0;
0079         rcu_read_unlock();
0080     }
0081 
0082     if (tk_len != expected_tk_len || hltk_len != sizeof(pasn->hltk)) {
0083         IWL_ERR(mvm, "Invalid key length: tk_len=%u hltk_len=%u\n",
0084             tk_len, hltk_len);
0085         goto out;
0086     }
0087 
0088     memcpy(pasn->addr, addr, sizeof(pasn->addr));
0089     memcpy(pasn->hltk, hltk, sizeof(pasn->hltk));
0090 
0091     if (tk && tk_len)
0092         memcpy(pasn->tk, tk, sizeof(pasn->tk));
0093 
0094     list_add_tail(&pasn->list, &mvm->ftm_initiator.pasn_list);
0095     return 0;
0096 out:
0097     kfree(pasn);
0098     return -EINVAL;
0099 }
0100 
0101 void iwl_mvm_ftm_remove_pasn_sta(struct iwl_mvm *mvm, u8 *addr)
0102 {
0103     struct iwl_mvm_ftm_pasn_entry *entry, *prev;
0104 
0105     lockdep_assert_held(&mvm->mutex);
0106 
0107     list_for_each_entry_safe(entry, prev, &mvm->ftm_initiator.pasn_list,
0108                  list) {
0109         if (memcmp(entry->addr, addr, sizeof(entry->addr)))
0110             continue;
0111 
0112         list_del(&entry->list);
0113         kfree(entry);
0114         return;
0115     }
0116 }
0117 
0118 static void iwl_mvm_ftm_reset(struct iwl_mvm *mvm)
0119 {
0120     struct iwl_mvm_loc_entry *e, *t;
0121 
0122     mvm->ftm_initiator.req = NULL;
0123     mvm->ftm_initiator.req_wdev = NULL;
0124     memset(mvm->ftm_initiator.responses, 0,
0125            sizeof(mvm->ftm_initiator.responses));
0126 
0127     list_for_each_entry_safe(e, t, &mvm->ftm_initiator.loc_list, list) {
0128         list_del(&e->list);
0129         kfree(e);
0130     }
0131 }
0132 
0133 void iwl_mvm_ftm_restart(struct iwl_mvm *mvm)
0134 {
0135     struct cfg80211_pmsr_result result = {
0136         .status = NL80211_PMSR_STATUS_FAILURE,
0137         .final = 1,
0138         .host_time = ktime_get_boottime_ns(),
0139         .type = NL80211_PMSR_TYPE_FTM,
0140     };
0141     int i;
0142 
0143     lockdep_assert_held(&mvm->mutex);
0144 
0145     if (!mvm->ftm_initiator.req)
0146         return;
0147 
0148     for (i = 0; i < mvm->ftm_initiator.req->n_peers; i++) {
0149         memcpy(result.addr, mvm->ftm_initiator.req->peers[i].addr,
0150                ETH_ALEN);
0151         result.ftm.burst_index = mvm->ftm_initiator.responses[i];
0152 
0153         cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev,
0154                      mvm->ftm_initiator.req,
0155                      &result, GFP_KERNEL);
0156     }
0157 
0158     cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev,
0159                    mvm->ftm_initiator.req, GFP_KERNEL);
0160     iwl_mvm_ftm_reset(mvm);
0161 }
0162 
0163 void iwl_mvm_ftm_initiator_smooth_config(struct iwl_mvm *mvm)
0164 {
0165     INIT_LIST_HEAD(&mvm->ftm_initiator.smooth.resp);
0166 
0167     IWL_DEBUG_INFO(mvm,
0168                "enable=%u, alpha=%u, age_jiffies=%u, thresh=(%u:%u)\n",
0169             IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH,
0170             IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA,
0171             IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * HZ,
0172             IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT,
0173             IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT);
0174 }
0175 
0176 void iwl_mvm_ftm_initiator_smooth_stop(struct iwl_mvm *mvm)
0177 {
0178     struct iwl_mvm_smooth_entry *se, *st;
0179 
0180     list_for_each_entry_safe(se, st, &mvm->ftm_initiator.smooth.resp,
0181                  list) {
0182         list_del(&se->list);
0183         kfree(se);
0184     }
0185 }
0186 
0187 static int
0188 iwl_ftm_range_request_status_to_err(enum iwl_tof_range_request_status s)
0189 {
0190     switch (s) {
0191     case IWL_TOF_RANGE_REQUEST_STATUS_SUCCESS:
0192         return 0;
0193     case IWL_TOF_RANGE_REQUEST_STATUS_BUSY:
0194         return -EBUSY;
0195     default:
0196         WARN_ON_ONCE(1);
0197         return -EIO;
0198     }
0199 }
0200 
0201 static void iwl_mvm_ftm_cmd_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0202                    struct iwl_tof_range_req_cmd_v5 *cmd,
0203                    struct cfg80211_pmsr_request *req)
0204 {
0205     int i;
0206 
0207     cmd->request_id = req->cookie;
0208     cmd->num_of_ap = req->n_peers;
0209 
0210     /* use maximum for "no timeout" or bigger than what we can do */
0211     if (!req->timeout || req->timeout > 255 * 100)
0212         cmd->req_timeout = 255;
0213     else
0214         cmd->req_timeout = DIV_ROUND_UP(req->timeout, 100);
0215 
0216     /*
0217      * We treat it always as random, since if not we'll
0218      * have filled our local address there instead.
0219      */
0220     cmd->macaddr_random = 1;
0221     memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN);
0222     for (i = 0; i < ETH_ALEN; i++)
0223         cmd->macaddr_mask[i] = ~req->mac_addr_mask[i];
0224 
0225     if (vif->cfg.assoc)
0226         memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN);
0227     else
0228         eth_broadcast_addr(cmd->range_req_bssid);
0229 }
0230 
0231 static void iwl_mvm_ftm_cmd_common(struct iwl_mvm *mvm,
0232                    struct ieee80211_vif *vif,
0233                    struct iwl_tof_range_req_cmd_v9 *cmd,
0234                    struct cfg80211_pmsr_request *req)
0235 {
0236     int i;
0237 
0238     cmd->initiator_flags =
0239         cpu_to_le32(IWL_TOF_INITIATOR_FLAGS_MACADDR_RANDOM |
0240                 IWL_TOF_INITIATOR_FLAGS_NON_ASAP_SUPPORT);
0241     cmd->request_id = req->cookie;
0242     cmd->num_of_ap = req->n_peers;
0243 
0244     /*
0245      * Use a large value for "no timeout". Don't use the maximum value
0246      * because of fw limitations.
0247      */
0248     if (req->timeout)
0249         cmd->req_timeout_ms = cpu_to_le32(req->timeout);
0250     else
0251         cmd->req_timeout_ms = cpu_to_le32(0xfffff);
0252 
0253     memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN);
0254     for (i = 0; i < ETH_ALEN; i++)
0255         cmd->macaddr_mask[i] = ~req->mac_addr_mask[i];
0256 
0257     if (vif->cfg.assoc) {
0258         memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN);
0259 
0260         /* AP's TSF is only relevant if associated */
0261         for (i = 0; i < req->n_peers; i++) {
0262             if (req->peers[i].report_ap_tsf) {
0263                 struct iwl_mvm_vif *mvmvif =
0264                     iwl_mvm_vif_from_mac80211(vif);
0265 
0266                 cmd->tsf_mac_id = cpu_to_le32(mvmvif->id);
0267                 return;
0268             }
0269         }
0270     } else {
0271         eth_broadcast_addr(cmd->range_req_bssid);
0272     }
0273 
0274     /* Don't report AP's TSF */
0275     cmd->tsf_mac_id = cpu_to_le32(0xff);
0276 }
0277 
0278 static void iwl_mvm_ftm_cmd_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0279                    struct iwl_tof_range_req_cmd_v8 *cmd,
0280                    struct cfg80211_pmsr_request *req)
0281 {
0282     iwl_mvm_ftm_cmd_common(mvm, vif, (void *)cmd, req);
0283 }
0284 
0285 static int
0286 iwl_mvm_ftm_target_chandef_v1(struct iwl_mvm *mvm,
0287                   struct cfg80211_pmsr_request_peer *peer,
0288                   u8 *channel, u8 *bandwidth,
0289                   u8 *ctrl_ch_position)
0290 {
0291     u32 freq = peer->chandef.chan->center_freq;
0292 
0293     *channel = ieee80211_frequency_to_channel(freq);
0294 
0295     switch (peer->chandef.width) {
0296     case NL80211_CHAN_WIDTH_20_NOHT:
0297         *bandwidth = IWL_TOF_BW_20_LEGACY;
0298         break;
0299     case NL80211_CHAN_WIDTH_20:
0300         *bandwidth = IWL_TOF_BW_20_HT;
0301         break;
0302     case NL80211_CHAN_WIDTH_40:
0303         *bandwidth = IWL_TOF_BW_40;
0304         break;
0305     case NL80211_CHAN_WIDTH_80:
0306         *bandwidth = IWL_TOF_BW_80;
0307         break;
0308     default:
0309         IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n",
0310             peer->chandef.width);
0311         return -EINVAL;
0312     }
0313 
0314     *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ?
0315         iwl_mvm_get_ctrl_pos(&peer->chandef) : 0;
0316 
0317     return 0;
0318 }
0319 
0320 static int
0321 iwl_mvm_ftm_target_chandef_v2(struct iwl_mvm *mvm,
0322                   struct cfg80211_pmsr_request_peer *peer,
0323                   u8 *channel, u8 *format_bw,
0324                   u8 *ctrl_ch_position)
0325 {
0326     u32 freq = peer->chandef.chan->center_freq;
0327     u8 cmd_ver;
0328 
0329     *channel = ieee80211_frequency_to_channel(freq);
0330 
0331     switch (peer->chandef.width) {
0332     case NL80211_CHAN_WIDTH_20_NOHT:
0333         *format_bw = IWL_LOCATION_FRAME_FORMAT_LEGACY;
0334         *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS;
0335         break;
0336     case NL80211_CHAN_WIDTH_20:
0337         *format_bw = IWL_LOCATION_FRAME_FORMAT_HT;
0338         *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS;
0339         break;
0340     case NL80211_CHAN_WIDTH_40:
0341         *format_bw = IWL_LOCATION_FRAME_FORMAT_HT;
0342         *format_bw |= IWL_LOCATION_BW_40MHZ << LOCATION_BW_POS;
0343         break;
0344     case NL80211_CHAN_WIDTH_80:
0345         *format_bw = IWL_LOCATION_FRAME_FORMAT_VHT;
0346         *format_bw |= IWL_LOCATION_BW_80MHZ << LOCATION_BW_POS;
0347         break;
0348     case NL80211_CHAN_WIDTH_160:
0349         cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
0350                         WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
0351                         IWL_FW_CMD_VER_UNKNOWN);
0352 
0353         if (cmd_ver >= 13) {
0354             *format_bw = IWL_LOCATION_FRAME_FORMAT_HE;
0355             *format_bw |= IWL_LOCATION_BW_160MHZ << LOCATION_BW_POS;
0356             break;
0357         }
0358         fallthrough;
0359     default:
0360         IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n",
0361             peer->chandef.width);
0362         return -EINVAL;
0363     }
0364 
0365     /* non EDCA based measurement must use HE preamble */
0366     if (peer->ftm.trigger_based || peer->ftm.non_trigger_based)
0367         *format_bw |= IWL_LOCATION_FRAME_FORMAT_HE;
0368 
0369     *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ?
0370         iwl_mvm_get_ctrl_pos(&peer->chandef) : 0;
0371 
0372     return 0;
0373 }
0374 
0375 static int
0376 iwl_mvm_ftm_put_target_v2(struct iwl_mvm *mvm,
0377               struct cfg80211_pmsr_request_peer *peer,
0378               struct iwl_tof_range_req_ap_entry_v2 *target)
0379 {
0380     int ret;
0381 
0382     ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num,
0383                         &target->bandwidth,
0384                         &target->ctrl_ch_position);
0385     if (ret)
0386         return ret;
0387 
0388     memcpy(target->bssid, peer->addr, ETH_ALEN);
0389     target->burst_period =
0390         cpu_to_le16(peer->ftm.burst_period);
0391     target->samples_per_burst = peer->ftm.ftms_per_burst;
0392     target->num_of_bursts = peer->ftm.num_bursts_exp;
0393     target->measure_type = 0; /* regular two-sided FTM */
0394     target->retries_per_sample = peer->ftm.ftmr_retries;
0395     target->asap_mode = peer->ftm.asap;
0396     target->enable_dyn_ack = IWL_MVM_FTM_INITIATOR_DYNACK;
0397 
0398     if (peer->ftm.request_lci)
0399         target->location_req |= IWL_TOF_LOC_LCI;
0400     if (peer->ftm.request_civicloc)
0401         target->location_req |= IWL_TOF_LOC_CIVIC;
0402 
0403     target->algo_type = IWL_MVM_FTM_INITIATOR_ALGO;
0404 
0405     return 0;
0406 }
0407 
0408 #define FTM_PUT_FLAG(flag)  (target->initiator_ap_flags |= \
0409                  cpu_to_le32(IWL_INITIATOR_AP_FLAGS_##flag))
0410 
0411 static void
0412 iwl_mvm_ftm_put_target_common(struct iwl_mvm *mvm,
0413                   struct cfg80211_pmsr_request_peer *peer,
0414                   struct iwl_tof_range_req_ap_entry_v6 *target)
0415 {
0416     memcpy(target->bssid, peer->addr, ETH_ALEN);
0417     target->burst_period =
0418         cpu_to_le16(peer->ftm.burst_period);
0419     target->samples_per_burst = peer->ftm.ftms_per_burst;
0420     target->num_of_bursts = peer->ftm.num_bursts_exp;
0421     target->ftmr_max_retries = peer->ftm.ftmr_retries;
0422     target->initiator_ap_flags = cpu_to_le32(0);
0423 
0424     if (peer->ftm.asap)
0425         FTM_PUT_FLAG(ASAP);
0426 
0427     if (peer->ftm.request_lci)
0428         FTM_PUT_FLAG(LCI_REQUEST);
0429 
0430     if (peer->ftm.request_civicloc)
0431         FTM_PUT_FLAG(CIVIC_REQUEST);
0432 
0433     if (IWL_MVM_FTM_INITIATOR_DYNACK)
0434         FTM_PUT_FLAG(DYN_ACK);
0435 
0436     if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_LINEAR_REG)
0437         FTM_PUT_FLAG(ALGO_LR);
0438     else if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_FFT)
0439         FTM_PUT_FLAG(ALGO_FFT);
0440 
0441     if (peer->ftm.trigger_based)
0442         FTM_PUT_FLAG(TB);
0443     else if (peer->ftm.non_trigger_based)
0444         FTM_PUT_FLAG(NON_TB);
0445 
0446     if ((peer->ftm.trigger_based || peer->ftm.non_trigger_based) &&
0447         peer->ftm.lmr_feedback)
0448         FTM_PUT_FLAG(LMR_FEEDBACK);
0449 }
0450 
0451 static int
0452 iwl_mvm_ftm_put_target_v3(struct iwl_mvm *mvm,
0453               struct cfg80211_pmsr_request_peer *peer,
0454               struct iwl_tof_range_req_ap_entry_v3 *target)
0455 {
0456     int ret;
0457 
0458     ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num,
0459                         &target->bandwidth,
0460                         &target->ctrl_ch_position);
0461     if (ret)
0462         return ret;
0463 
0464     /*
0465      * Versions 3 and 4 has some common fields, so
0466      * iwl_mvm_ftm_put_target_common() can be used for version 7 too.
0467      */
0468     iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target);
0469 
0470     return 0;
0471 }
0472 
0473 static int
0474 iwl_mvm_ftm_put_target_v4(struct iwl_mvm *mvm,
0475               struct cfg80211_pmsr_request_peer *peer,
0476               struct iwl_tof_range_req_ap_entry_v4 *target)
0477 {
0478     int ret;
0479 
0480     ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num,
0481                         &target->format_bw,
0482                         &target->ctrl_ch_position);
0483     if (ret)
0484         return ret;
0485 
0486     iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target);
0487 
0488     return 0;
0489 }
0490 
0491 static int
0492 iwl_mvm_ftm_put_target(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0493                struct cfg80211_pmsr_request_peer *peer,
0494                struct iwl_tof_range_req_ap_entry_v6 *target)
0495 {
0496     int ret;
0497 
0498     ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num,
0499                         &target->format_bw,
0500                         &target->ctrl_ch_position);
0501     if (ret)
0502         return ret;
0503 
0504     iwl_mvm_ftm_put_target_common(mvm, peer, target);
0505 
0506     if (vif->cfg.assoc &&
0507         !memcmp(peer->addr, vif->bss_conf.bssid, ETH_ALEN)) {
0508         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
0509         struct ieee80211_sta *sta;
0510 
0511         rcu_read_lock();
0512 
0513         sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
0514         if (sta->mfp && (peer->ftm.trigger_based || peer->ftm.non_trigger_based))
0515             FTM_PUT_FLAG(PMF);
0516 
0517         rcu_read_unlock();
0518 
0519         target->sta_id = mvmvif->ap_sta_id;
0520     } else {
0521         target->sta_id = IWL_MVM_INVALID_STA;
0522     }
0523 
0524     /*
0525      * TODO: Beacon interval is currently unknown, so use the common value
0526      * of 100 TUs.
0527      */
0528     target->beacon_interval = cpu_to_le16(100);
0529     return 0;
0530 }
0531 
0532 static int iwl_mvm_ftm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *hcmd)
0533 {
0534     u32 status;
0535     int err = iwl_mvm_send_cmd_status(mvm, hcmd, &status);
0536 
0537     if (!err && status) {
0538         IWL_ERR(mvm, "FTM range request command failure, status: %u\n",
0539             status);
0540         err = iwl_ftm_range_request_status_to_err(status);
0541     }
0542 
0543     return err;
0544 }
0545 
0546 static int iwl_mvm_ftm_start_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0547                 struct cfg80211_pmsr_request *req)
0548 {
0549     struct iwl_tof_range_req_cmd_v5 cmd_v5;
0550     struct iwl_host_cmd hcmd = {
0551         .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
0552         .dataflags[0] = IWL_HCMD_DFL_DUP,
0553         .data[0] = &cmd_v5,
0554         .len[0] = sizeof(cmd_v5),
0555     };
0556     u8 i;
0557     int err;
0558 
0559     iwl_mvm_ftm_cmd_v5(mvm, vif, &cmd_v5, req);
0560 
0561     for (i = 0; i < cmd_v5.num_of_ap; i++) {
0562         struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
0563 
0564         err = iwl_mvm_ftm_put_target_v2(mvm, peer, &cmd_v5.ap[i]);
0565         if (err)
0566             return err;
0567     }
0568 
0569     return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
0570 }
0571 
0572 static int iwl_mvm_ftm_start_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0573                 struct cfg80211_pmsr_request *req)
0574 {
0575     struct iwl_tof_range_req_cmd_v7 cmd_v7;
0576     struct iwl_host_cmd hcmd = {
0577         .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
0578         .dataflags[0] = IWL_HCMD_DFL_DUP,
0579         .data[0] = &cmd_v7,
0580         .len[0] = sizeof(cmd_v7),
0581     };
0582     u8 i;
0583     int err;
0584 
0585     /*
0586      * Versions 7 and 8 has the same structure except from the responders
0587      * list, so iwl_mvm_ftm_cmd() can be used for version 7 too.
0588      */
0589     iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd_v7, req);
0590 
0591     for (i = 0; i < cmd_v7.num_of_ap; i++) {
0592         struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
0593 
0594         err = iwl_mvm_ftm_put_target_v3(mvm, peer, &cmd_v7.ap[i]);
0595         if (err)
0596             return err;
0597     }
0598 
0599     return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
0600 }
0601 
0602 static int iwl_mvm_ftm_start_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0603                 struct cfg80211_pmsr_request *req)
0604 {
0605     struct iwl_tof_range_req_cmd_v8 cmd;
0606     struct iwl_host_cmd hcmd = {
0607         .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
0608         .dataflags[0] = IWL_HCMD_DFL_DUP,
0609         .data[0] = &cmd,
0610         .len[0] = sizeof(cmd),
0611     };
0612     u8 i;
0613     int err;
0614 
0615     iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd, req);
0616 
0617     for (i = 0; i < cmd.num_of_ap; i++) {
0618         struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
0619 
0620         err = iwl_mvm_ftm_put_target_v4(mvm, peer, &cmd.ap[i]);
0621         if (err)
0622             return err;
0623     }
0624 
0625     return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
0626 }
0627 
0628 static int iwl_mvm_ftm_start_v9(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0629                 struct cfg80211_pmsr_request *req)
0630 {
0631     struct iwl_tof_range_req_cmd_v9 cmd;
0632     struct iwl_host_cmd hcmd = {
0633         .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
0634         .dataflags[0] = IWL_HCMD_DFL_DUP,
0635         .data[0] = &cmd,
0636         .len[0] = sizeof(cmd),
0637     };
0638     u8 i;
0639     int err;
0640 
0641     iwl_mvm_ftm_cmd_common(mvm, vif, &cmd, req);
0642 
0643     for (i = 0; i < cmd.num_of_ap; i++) {
0644         struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
0645         struct iwl_tof_range_req_ap_entry_v6 *target = &cmd.ap[i];
0646 
0647         err = iwl_mvm_ftm_put_target(mvm, vif, peer, target);
0648         if (err)
0649             return err;
0650     }
0651 
0652     return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
0653 }
0654 
0655 static void iter(struct ieee80211_hw *hw,
0656          struct ieee80211_vif *vif,
0657          struct ieee80211_sta *sta,
0658          struct ieee80211_key_conf *key,
0659          void *data)
0660 {
0661     struct iwl_tof_range_req_ap_entry_v6 *target = data;
0662 
0663     if (!sta || memcmp(sta->addr, target->bssid, ETH_ALEN))
0664         return;
0665 
0666     WARN_ON(!sta->mfp);
0667 
0668     if (WARN_ON(key->keylen > sizeof(target->tk)))
0669         return;
0670 
0671     memcpy(target->tk, key->key, key->keylen);
0672     target->cipher = iwl_mvm_cipher_to_location_cipher(key->cipher);
0673     WARN_ON(target->cipher == IWL_LOCATION_CIPHER_INVALID);
0674 }
0675 
0676 static void
0677 iwl_mvm_ftm_set_secured_ranging(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0678                 struct iwl_tof_range_req_ap_entry_v7 *target)
0679 {
0680     struct iwl_mvm_ftm_pasn_entry *entry;
0681     u32 flags = le32_to_cpu(target->initiator_ap_flags);
0682 
0683     if (!(flags & (IWL_INITIATOR_AP_FLAGS_NON_TB |
0684                IWL_INITIATOR_AP_FLAGS_TB)))
0685         return;
0686 
0687     lockdep_assert_held(&mvm->mutex);
0688 
0689     list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) {
0690         if (memcmp(entry->addr, target->bssid, sizeof(entry->addr)))
0691             continue;
0692 
0693         target->cipher = entry->cipher;
0694         memcpy(target->hltk, entry->hltk, sizeof(target->hltk));
0695 
0696         if (vif->cfg.assoc &&
0697             !memcmp(vif->bss_conf.bssid, target->bssid,
0698                 sizeof(target->bssid)))
0699             ieee80211_iter_keys(mvm->hw, vif, iter, target);
0700         else
0701             memcpy(target->tk, entry->tk, sizeof(target->tk));
0702 
0703         memcpy(target->rx_pn, entry->rx_pn, sizeof(target->rx_pn));
0704         memcpy(target->tx_pn, entry->tx_pn, sizeof(target->tx_pn));
0705 
0706         target->initiator_ap_flags |=
0707             cpu_to_le32(IWL_INITIATOR_AP_FLAGS_SECURED);
0708         return;
0709     }
0710 }
0711 
0712 static int
0713 iwl_mvm_ftm_put_target_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0714               struct cfg80211_pmsr_request_peer *peer,
0715               struct iwl_tof_range_req_ap_entry_v7 *target)
0716 {
0717     int err = iwl_mvm_ftm_put_target(mvm, vif, peer, (void *)target);
0718     if (err)
0719         return err;
0720 
0721     iwl_mvm_ftm_set_secured_ranging(mvm, vif, target);
0722     return err;
0723 }
0724 
0725 static int iwl_mvm_ftm_start_v11(struct iwl_mvm *mvm,
0726                  struct ieee80211_vif *vif,
0727                  struct cfg80211_pmsr_request *req)
0728 {
0729     struct iwl_tof_range_req_cmd_v11 cmd;
0730     struct iwl_host_cmd hcmd = {
0731         .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
0732         .dataflags[0] = IWL_HCMD_DFL_DUP,
0733         .data[0] = &cmd,
0734         .len[0] = sizeof(cmd),
0735     };
0736     u8 i;
0737     int err;
0738 
0739     iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);
0740 
0741     for (i = 0; i < cmd.num_of_ap; i++) {
0742         struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
0743         struct iwl_tof_range_req_ap_entry_v7 *target = &cmd.ap[i];
0744 
0745         err = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, target);
0746         if (err)
0747             return err;
0748     }
0749 
0750     return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
0751 }
0752 
0753 static void
0754 iwl_mvm_ftm_set_ndp_params(struct iwl_mvm *mvm,
0755                struct iwl_tof_range_req_ap_entry_v8 *target)
0756 {
0757     /* Only 2 STS are supported on Tx */
0758     u32 i2r_max_sts = IWL_MVM_FTM_I2R_MAX_STS > 1 ? 1 :
0759         IWL_MVM_FTM_I2R_MAX_STS;
0760 
0761     target->r2i_ndp_params = IWL_MVM_FTM_R2I_MAX_REP |
0762         (IWL_MVM_FTM_R2I_MAX_STS << IWL_LOCATION_MAX_STS_POS);
0763     target->i2r_ndp_params = IWL_MVM_FTM_I2R_MAX_REP |
0764         (i2r_max_sts << IWL_LOCATION_MAX_STS_POS);
0765     target->r2i_max_total_ltf = IWL_MVM_FTM_R2I_MAX_TOTAL_LTF;
0766     target->i2r_max_total_ltf = IWL_MVM_FTM_I2R_MAX_TOTAL_LTF;
0767 }
0768 
0769 static int
0770 iwl_mvm_ftm_put_target_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0771               struct cfg80211_pmsr_request_peer *peer,
0772               struct iwl_tof_range_req_ap_entry_v8 *target)
0773 {
0774     u32 flags;
0775     int ret = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, (void *)target);
0776 
0777     if (ret)
0778         return ret;
0779 
0780     iwl_mvm_ftm_set_ndp_params(mvm, target);
0781 
0782     /*
0783      * If secure LTF is turned off, replace the flag with PMF only
0784      */
0785     flags = le32_to_cpu(target->initiator_ap_flags);
0786     if ((flags & IWL_INITIATOR_AP_FLAGS_SECURED) &&
0787         !IWL_MVM_FTM_INITIATOR_SECURE_LTF) {
0788         flags &= ~IWL_INITIATOR_AP_FLAGS_SECURED;
0789         flags |= IWL_INITIATOR_AP_FLAGS_PMF;
0790         target->initiator_ap_flags = cpu_to_le32(flags);
0791     }
0792 
0793     return 0;
0794 }
0795 
0796 static int iwl_mvm_ftm_start_v12(struct iwl_mvm *mvm,
0797                  struct ieee80211_vif *vif,
0798                  struct cfg80211_pmsr_request *req)
0799 {
0800     struct iwl_tof_range_req_cmd_v12 cmd;
0801     struct iwl_host_cmd hcmd = {
0802         .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
0803         .dataflags[0] = IWL_HCMD_DFL_DUP,
0804         .data[0] = &cmd,
0805         .len[0] = sizeof(cmd),
0806     };
0807     u8 i;
0808     int err;
0809 
0810     iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);
0811 
0812     for (i = 0; i < cmd.num_of_ap; i++) {
0813         struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
0814         struct iwl_tof_range_req_ap_entry_v8 *target = &cmd.ap[i];
0815 
0816         err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, target);
0817         if (err)
0818             return err;
0819     }
0820 
0821     return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
0822 }
0823 
0824 static int iwl_mvm_ftm_start_v13(struct iwl_mvm *mvm,
0825                  struct ieee80211_vif *vif,
0826                  struct cfg80211_pmsr_request *req)
0827 {
0828     struct iwl_tof_range_req_cmd_v13 cmd;
0829     struct iwl_host_cmd hcmd = {
0830         .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
0831         .dataflags[0] = IWL_HCMD_DFL_DUP,
0832         .data[0] = &cmd,
0833         .len[0] = sizeof(cmd),
0834     };
0835     u8 i;
0836     int err;
0837 
0838     iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);
0839 
0840     for (i = 0; i < cmd.num_of_ap; i++) {
0841         struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
0842         struct iwl_tof_range_req_ap_entry_v9 *target = &cmd.ap[i];
0843 
0844         err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, (void *)target);
0845         if (err)
0846             return err;
0847 
0848         if (peer->ftm.trigger_based || peer->ftm.non_trigger_based)
0849             target->bss_color = peer->ftm.bss_color;
0850 
0851         if (peer->ftm.non_trigger_based) {
0852             target->min_time_between_msr =
0853                 cpu_to_le16(IWL_MVM_FTM_NON_TB_MIN_TIME_BETWEEN_MSR);
0854             target->burst_period =
0855                 cpu_to_le16(IWL_MVM_FTM_NON_TB_MAX_TIME_BETWEEN_MSR);
0856         } else {
0857             target->min_time_between_msr = cpu_to_le16(0);
0858         }
0859 
0860         target->band =
0861             iwl_mvm_phy_band_from_nl80211(peer->chandef.chan->band);
0862     }
0863 
0864     return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
0865 }
0866 
0867 int iwl_mvm_ftm_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
0868               struct cfg80211_pmsr_request *req)
0869 {
0870     bool new_api = fw_has_api(&mvm->fw->ucode_capa,
0871                   IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ);
0872     int err;
0873 
0874     lockdep_assert_held(&mvm->mutex);
0875 
0876     if (mvm->ftm_initiator.req)
0877         return -EBUSY;
0878 
0879     if (new_api) {
0880         u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
0881                            WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
0882                            IWL_FW_CMD_VER_UNKNOWN);
0883 
0884         switch (cmd_ver) {
0885         case 13:
0886             err = iwl_mvm_ftm_start_v13(mvm, vif, req);
0887             break;
0888         case 12:
0889             err = iwl_mvm_ftm_start_v12(mvm, vif, req);
0890             break;
0891         case 11:
0892             err = iwl_mvm_ftm_start_v11(mvm, vif, req);
0893             break;
0894         case 9:
0895         case 10:
0896             err = iwl_mvm_ftm_start_v9(mvm, vif, req);
0897             break;
0898         case 8:
0899             err = iwl_mvm_ftm_start_v8(mvm, vif, req);
0900             break;
0901         default:
0902             err = iwl_mvm_ftm_start_v7(mvm, vif, req);
0903             break;
0904         }
0905     } else {
0906         err = iwl_mvm_ftm_start_v5(mvm, vif, req);
0907     }
0908 
0909     if (!err) {
0910         mvm->ftm_initiator.req = req;
0911         mvm->ftm_initiator.req_wdev = ieee80211_vif_to_wdev(vif);
0912     }
0913 
0914     return err;
0915 }
0916 
0917 void iwl_mvm_ftm_abort(struct iwl_mvm *mvm, struct cfg80211_pmsr_request *req)
0918 {
0919     struct iwl_tof_range_abort_cmd cmd = {
0920         .request_id = req->cookie,
0921     };
0922 
0923     lockdep_assert_held(&mvm->mutex);
0924 
0925     if (req != mvm->ftm_initiator.req)
0926         return;
0927 
0928     iwl_mvm_ftm_reset(mvm);
0929 
0930     if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(LOCATION_GROUP, TOF_RANGE_ABORT_CMD),
0931                  0, sizeof(cmd), &cmd))
0932         IWL_ERR(mvm, "failed to abort FTM process\n");
0933 }
0934 
0935 static int iwl_mvm_ftm_find_peer(struct cfg80211_pmsr_request *req,
0936                  const u8 *addr)
0937 {
0938     int i;
0939 
0940     for (i = 0; i < req->n_peers; i++) {
0941         struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
0942 
0943         if (ether_addr_equal_unaligned(peer->addr, addr))
0944             return i;
0945     }
0946 
0947     return -ENOENT;
0948 }
0949 
0950 static u64 iwl_mvm_ftm_get_host_time(struct iwl_mvm *mvm, __le32 fw_gp2_ts)
0951 {
0952     u32 gp2_ts = le32_to_cpu(fw_gp2_ts);
0953     u32 curr_gp2, diff;
0954     u64 now_from_boot_ns;
0955 
0956     iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2,
0957                   &now_from_boot_ns, NULL);
0958 
0959     if (curr_gp2 >= gp2_ts)
0960         diff = curr_gp2 - gp2_ts;
0961     else
0962         diff = curr_gp2 + (U32_MAX - gp2_ts + 1);
0963 
0964     return now_from_boot_ns - (u64)diff * 1000;
0965 }
0966 
0967 static void iwl_mvm_ftm_get_lci_civic(struct iwl_mvm *mvm,
0968                       struct cfg80211_pmsr_result *res)
0969 {
0970     struct iwl_mvm_loc_entry *entry;
0971 
0972     list_for_each_entry(entry, &mvm->ftm_initiator.loc_list, list) {
0973         if (!ether_addr_equal_unaligned(res->addr, entry->addr))
0974             continue;
0975 
0976         if (entry->lci_len) {
0977             res->ftm.lci_len = entry->lci_len;
0978             res->ftm.lci = entry->buf;
0979         }
0980 
0981         if (entry->civic_len) {
0982             res->ftm.civicloc_len = entry->civic_len;
0983             res->ftm.civicloc = entry->buf + entry->lci_len;
0984         }
0985 
0986         /* we found the entry we needed */
0987         break;
0988     }
0989 }
0990 
0991 static int iwl_mvm_ftm_range_resp_valid(struct iwl_mvm *mvm, u8 request_id,
0992                     u8 num_of_aps)
0993 {
0994     lockdep_assert_held(&mvm->mutex);
0995 
0996     if (request_id != (u8)mvm->ftm_initiator.req->cookie) {
0997         IWL_ERR(mvm, "Request ID mismatch, got %u, active %u\n",
0998             request_id, (u8)mvm->ftm_initiator.req->cookie);
0999         return -EINVAL;
1000     }
1001 
1002     if (num_of_aps > mvm->ftm_initiator.req->n_peers) {
1003         IWL_ERR(mvm, "FTM range response invalid\n");
1004         return -EINVAL;
1005     }
1006 
1007     return 0;
1008 }
1009 
1010 static void iwl_mvm_ftm_rtt_smoothing(struct iwl_mvm *mvm,
1011                       struct cfg80211_pmsr_result *res)
1012 {
1013     struct iwl_mvm_smooth_entry *resp;
1014     s64 rtt_avg, rtt = res->ftm.rtt_avg;
1015     u32 undershoot, overshoot;
1016     u8 alpha;
1017     bool found;
1018 
1019     if (!IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH)
1020         return;
1021 
1022     WARN_ON(rtt < 0);
1023 
1024     if (res->status != NL80211_PMSR_STATUS_SUCCESS) {
1025         IWL_DEBUG_INFO(mvm,
1026                    ": %pM: ignore failed measurement. Status=%u\n",
1027                    res->addr, res->status);
1028         return;
1029     }
1030 
1031     found = false;
1032     list_for_each_entry(resp, &mvm->ftm_initiator.smooth.resp, list) {
1033         if (!memcmp(res->addr, resp->addr, ETH_ALEN)) {
1034             found = true;
1035             break;
1036         }
1037     }
1038 
1039     if (!found) {
1040         resp = kzalloc(sizeof(*resp), GFP_KERNEL);
1041         if (!resp)
1042             return;
1043 
1044         memcpy(resp->addr, res->addr, ETH_ALEN);
1045         list_add_tail(&resp->list, &mvm->ftm_initiator.smooth.resp);
1046 
1047         resp->rtt_avg = rtt;
1048 
1049         IWL_DEBUG_INFO(mvm, "new: %pM: rtt_avg=%lld\n",
1050                    resp->addr, resp->rtt_avg);
1051         goto update_time;
1052     }
1053 
1054     if (res->host_time - resp->host_time >
1055         IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * 1000000000) {
1056         resp->rtt_avg = rtt;
1057 
1058         IWL_DEBUG_INFO(mvm, "expired: %pM: rtt_avg=%lld\n",
1059                    resp->addr, resp->rtt_avg);
1060         goto update_time;
1061     }
1062 
1063     /* Smooth the results based on the tracked RTT average */
1064     undershoot = IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT;
1065     overshoot = IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT;
1066     alpha = IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA;
1067 
1068     rtt_avg = div_s64(alpha * rtt + (100 - alpha) * resp->rtt_avg, 100);
1069 
1070     IWL_DEBUG_INFO(mvm,
1071                "%pM: prev rtt_avg=%lld, new rtt_avg=%lld, rtt=%lld\n",
1072                resp->addr, resp->rtt_avg, rtt_avg, rtt);
1073 
1074     /*
1075      * update the responder's average RTT results regardless of
1076      * the under/over shoot logic below
1077      */
1078     resp->rtt_avg = rtt_avg;
1079 
1080     /* smooth the results */
1081     if (rtt_avg > rtt && (rtt_avg - rtt) > undershoot) {
1082         res->ftm.rtt_avg = rtt_avg;
1083 
1084         IWL_DEBUG_INFO(mvm,
1085                    "undershoot: val=%lld\n",
1086                    (rtt_avg - rtt));
1087     } else if (rtt_avg < rtt && (rtt - rtt_avg) >
1088            overshoot) {
1089         res->ftm.rtt_avg = rtt_avg;
1090         IWL_DEBUG_INFO(mvm,
1091                    "overshoot: val=%lld\n",
1092                    (rtt - rtt_avg));
1093     }
1094 
1095 update_time:
1096     resp->host_time = res->host_time;
1097 }
1098 
1099 static void iwl_mvm_debug_range_resp(struct iwl_mvm *mvm, u8 index,
1100                      struct cfg80211_pmsr_result *res)
1101 {
1102     s64 rtt_avg = div_s64(res->ftm.rtt_avg * 100, 6666);
1103 
1104     IWL_DEBUG_INFO(mvm, "entry %d\n", index);
1105     IWL_DEBUG_INFO(mvm, "\tstatus: %d\n", res->status);
1106     IWL_DEBUG_INFO(mvm, "\tBSSID: %pM\n", res->addr);
1107     IWL_DEBUG_INFO(mvm, "\thost time: %llu\n", res->host_time);
1108     IWL_DEBUG_INFO(mvm, "\tburst index: %d\n", res->ftm.burst_index);
1109     IWL_DEBUG_INFO(mvm, "\tsuccess num: %u\n", res->ftm.num_ftmr_successes);
1110     IWL_DEBUG_INFO(mvm, "\trssi: %d\n", res->ftm.rssi_avg);
1111     IWL_DEBUG_INFO(mvm, "\trssi spread: %d\n", res->ftm.rssi_spread);
1112     IWL_DEBUG_INFO(mvm, "\trtt: %lld\n", res->ftm.rtt_avg);
1113     IWL_DEBUG_INFO(mvm, "\trtt var: %llu\n", res->ftm.rtt_variance);
1114     IWL_DEBUG_INFO(mvm, "\trtt spread: %llu\n", res->ftm.rtt_spread);
1115     IWL_DEBUG_INFO(mvm, "\tdistance: %lld\n", rtt_avg);
1116 }
1117 
1118 static void
1119 iwl_mvm_ftm_pasn_update_pn(struct iwl_mvm *mvm,
1120                struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap)
1121 {
1122     struct iwl_mvm_ftm_pasn_entry *entry;
1123 
1124     lockdep_assert_held(&mvm->mutex);
1125 
1126     list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) {
1127         if (memcmp(fw_ap->bssid, entry->addr, sizeof(entry->addr)))
1128             continue;
1129 
1130         memcpy(entry->rx_pn, fw_ap->rx_pn, sizeof(entry->rx_pn));
1131         memcpy(entry->tx_pn, fw_ap->tx_pn, sizeof(entry->tx_pn));
1132         return;
1133     }
1134 }
1135 
1136 static u8 iwl_mvm_ftm_get_range_resp_ver(struct iwl_mvm *mvm)
1137 {
1138     if (!fw_has_api(&mvm->fw->ucode_capa,
1139             IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ))
1140         return 5;
1141 
1142     /* Starting from version 8, the FW advertises the version */
1143     if (mvm->cmd_ver.range_resp >= 8)
1144         return mvm->cmd_ver.range_resp;
1145     else if (fw_has_api(&mvm->fw->ucode_capa,
1146                 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY))
1147         return 7;
1148 
1149     /* The first version of the new range request API */
1150     return 6;
1151 }
1152 
1153 static bool iwl_mvm_ftm_resp_size_validation(u8 ver, unsigned int pkt_len)
1154 {
1155     switch (ver) {
1156     case 9:
1157     case 8:
1158         return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v8);
1159     case 7:
1160         return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v7);
1161     case 6:
1162         return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v6);
1163     case 5:
1164         return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v5);
1165     default:
1166         WARN_ONCE(1, "FTM: unsupported range response version %u", ver);
1167         return false;
1168     }
1169 }
1170 
1171 void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1172 {
1173     struct iwl_rx_packet *pkt = rxb_addr(rxb);
1174     unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1175     struct iwl_tof_range_rsp_ntfy_v5 *fw_resp_v5 = (void *)pkt->data;
1176     struct iwl_tof_range_rsp_ntfy_v6 *fw_resp_v6 = (void *)pkt->data;
1177     struct iwl_tof_range_rsp_ntfy_v7 *fw_resp_v7 = (void *)pkt->data;
1178     struct iwl_tof_range_rsp_ntfy_v8 *fw_resp_v8 = (void *)pkt->data;
1179     int i;
1180     bool new_api = fw_has_api(&mvm->fw->ucode_capa,
1181                   IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ);
1182     u8 num_of_aps, last_in_batch;
1183     u8 notif_ver = iwl_mvm_ftm_get_range_resp_ver(mvm);
1184 
1185     lockdep_assert_held(&mvm->mutex);
1186 
1187     if (!mvm->ftm_initiator.req) {
1188         return;
1189     }
1190 
1191     if (unlikely(!iwl_mvm_ftm_resp_size_validation(notif_ver, pkt_len)))
1192         return;
1193 
1194     if (new_api) {
1195         if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v8->request_id,
1196                          fw_resp_v8->num_of_aps))
1197             return;
1198 
1199         num_of_aps = fw_resp_v8->num_of_aps;
1200         last_in_batch = fw_resp_v8->last_report;
1201     } else {
1202         if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v5->request_id,
1203                          fw_resp_v5->num_of_aps))
1204             return;
1205 
1206         num_of_aps = fw_resp_v5->num_of_aps;
1207         last_in_batch = fw_resp_v5->last_in_batch;
1208     }
1209 
1210     IWL_DEBUG_INFO(mvm, "Range response received\n");
1211     IWL_DEBUG_INFO(mvm, "request id: %lld, num of entries: %hhu\n",
1212                mvm->ftm_initiator.req->cookie, num_of_aps);
1213 
1214     for (i = 0; i < num_of_aps && i < IWL_MVM_TOF_MAX_APS; i++) {
1215         struct cfg80211_pmsr_result result = {};
1216         struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap;
1217         int peer_idx;
1218 
1219         if (new_api) {
1220             if (notif_ver >= 8) {
1221                 fw_ap = &fw_resp_v8->ap[i];
1222                 iwl_mvm_ftm_pasn_update_pn(mvm, fw_ap);
1223             } else if (notif_ver == 7) {
1224                 fw_ap = (void *)&fw_resp_v7->ap[i];
1225             } else {
1226                 fw_ap = (void *)&fw_resp_v6->ap[i];
1227             }
1228 
1229             result.final = fw_ap->last_burst;
1230             result.ap_tsf = le32_to_cpu(fw_ap->start_tsf);
1231             result.ap_tsf_valid = 1;
1232         } else {
1233             /* the first part is the same for old and new APIs */
1234             fw_ap = (void *)&fw_resp_v5->ap[i];
1235             /*
1236              * FIXME: the firmware needs to report this, we don't
1237              * even know the number of bursts the responder picked
1238              * (if we asked it to)
1239              */
1240             result.final = 0;
1241         }
1242 
1243         peer_idx = iwl_mvm_ftm_find_peer(mvm->ftm_initiator.req,
1244                          fw_ap->bssid);
1245         if (peer_idx < 0) {
1246             IWL_WARN(mvm,
1247                  "Unknown address (%pM, target #%d) in FTM response\n",
1248                  fw_ap->bssid, i);
1249             continue;
1250         }
1251 
1252         switch (fw_ap->measure_status) {
1253         case IWL_TOF_ENTRY_SUCCESS:
1254             result.status = NL80211_PMSR_STATUS_SUCCESS;
1255             break;
1256         case IWL_TOF_ENTRY_TIMING_MEASURE_TIMEOUT:
1257             result.status = NL80211_PMSR_STATUS_TIMEOUT;
1258             break;
1259         case IWL_TOF_ENTRY_NO_RESPONSE:
1260             result.status = NL80211_PMSR_STATUS_FAILURE;
1261             result.ftm.failure_reason =
1262                 NL80211_PMSR_FTM_FAILURE_NO_RESPONSE;
1263             break;
1264         case IWL_TOF_ENTRY_REQUEST_REJECTED:
1265             result.status = NL80211_PMSR_STATUS_FAILURE;
1266             result.ftm.failure_reason =
1267                 NL80211_PMSR_FTM_FAILURE_PEER_BUSY;
1268             result.ftm.busy_retry_time = fw_ap->refusal_period;
1269             break;
1270         default:
1271             result.status = NL80211_PMSR_STATUS_FAILURE;
1272             result.ftm.failure_reason =
1273                 NL80211_PMSR_FTM_FAILURE_UNSPECIFIED;
1274             break;
1275         }
1276         memcpy(result.addr, fw_ap->bssid, ETH_ALEN);
1277         result.host_time = iwl_mvm_ftm_get_host_time(mvm,
1278                                  fw_ap->timestamp);
1279         result.type = NL80211_PMSR_TYPE_FTM;
1280         result.ftm.burst_index = mvm->ftm_initiator.responses[peer_idx];
1281         mvm->ftm_initiator.responses[peer_idx]++;
1282         result.ftm.rssi_avg = fw_ap->rssi;
1283         result.ftm.rssi_avg_valid = 1;
1284         result.ftm.rssi_spread = fw_ap->rssi_spread;
1285         result.ftm.rssi_spread_valid = 1;
1286         result.ftm.rtt_avg = (s32)le32_to_cpu(fw_ap->rtt);
1287         result.ftm.rtt_avg_valid = 1;
1288         result.ftm.rtt_variance = le32_to_cpu(fw_ap->rtt_variance);
1289         result.ftm.rtt_variance_valid = 1;
1290         result.ftm.rtt_spread = le32_to_cpu(fw_ap->rtt_spread);
1291         result.ftm.rtt_spread_valid = 1;
1292 
1293         iwl_mvm_ftm_get_lci_civic(mvm, &result);
1294 
1295         iwl_mvm_ftm_rtt_smoothing(mvm, &result);
1296 
1297         cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev,
1298                      mvm->ftm_initiator.req,
1299                      &result, GFP_KERNEL);
1300 
1301         if (fw_has_api(&mvm->fw->ucode_capa,
1302                    IWL_UCODE_TLV_API_FTM_RTT_ACCURACY))
1303             IWL_DEBUG_INFO(mvm, "RTT confidence: %hhu\n",
1304                        fw_ap->rttConfidence);
1305 
1306         iwl_mvm_debug_range_resp(mvm, i, &result);
1307     }
1308 
1309     if (last_in_batch) {
1310         cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev,
1311                        mvm->ftm_initiator.req,
1312                        GFP_KERNEL);
1313         iwl_mvm_ftm_reset(mvm);
1314     }
1315 }
1316 
1317 void iwl_mvm_ftm_lc_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1318 {
1319     struct iwl_rx_packet *pkt = rxb_addr(rxb);
1320     const struct ieee80211_mgmt *mgmt = (void *)pkt->data;
1321     size_t len = iwl_rx_packet_payload_len(pkt);
1322     struct iwl_mvm_loc_entry *entry;
1323     const u8 *ies, *lci, *civic, *msr_ie;
1324     size_t ies_len, lci_len = 0, civic_len = 0;
1325     size_t baselen = IEEE80211_MIN_ACTION_SIZE +
1326              sizeof(mgmt->u.action.u.ftm);
1327     static const u8 rprt_type_lci = IEEE80211_SPCT_MSR_RPRT_TYPE_LCI;
1328     static const u8 rprt_type_civic = IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC;
1329 
1330     if (len <= baselen)
1331         return;
1332 
1333     lockdep_assert_held(&mvm->mutex);
1334 
1335     ies = mgmt->u.action.u.ftm.variable;
1336     ies_len = len - baselen;
1337 
1338     msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len,
1339                     &rprt_type_lci, 1, 4);
1340     if (msr_ie) {
1341         lci = msr_ie + 2;
1342         lci_len = msr_ie[1];
1343     }
1344 
1345     msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len,
1346                     &rprt_type_civic, 1, 4);
1347     if (msr_ie) {
1348         civic = msr_ie + 2;
1349         civic_len = msr_ie[1];
1350     }
1351 
1352     entry = kmalloc(sizeof(*entry) + lci_len + civic_len, GFP_KERNEL);
1353     if (!entry)
1354         return;
1355 
1356     memcpy(entry->addr, mgmt->bssid, ETH_ALEN);
1357 
1358     entry->lci_len = lci_len;
1359     if (lci_len)
1360         memcpy(entry->buf, lci, lci_len);
1361 
1362     entry->civic_len = civic_len;
1363     if (civic_len)
1364         memcpy(entry->buf + lci_len, civic, civic_len);
1365 
1366     list_add_tail(&entry->list, &mvm->ftm_initiator.loc_list);
1367 }
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