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linux-zen-desktop/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c

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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2015-2017 Intel Deutschland GmbH
* Copyright (C) 2018-2022 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->cfg.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->cfg.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->cfg.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,
WIDE_ID(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->cfg.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 && (peer->ftm.trigger_based || peer->ftm.non_trigger_based))
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 = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
.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 = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
.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 = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
.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 = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
.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->cfg.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 = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
.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 = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
.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 = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
.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,
WIDE_ID(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, WIDE_ID(LOCATION_GROUP, TOF_RANGE_ABORT_CMD),
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 = NULL, *iter;
s64 rtt_avg, rtt = res->ftm.rtt_avg;
u32 undershoot, overshoot;
u8 alpha;
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;
}
list_for_each_entry(iter, &mvm->ftm_initiator.smooth.resp, list) {
if (!memcmp(res->addr, iter->addr, ETH_ALEN)) {
resp = iter;
break;
}
}
if (!resp) {
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 = div_s64(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: %d\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: %d\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: %u\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: %u\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);
}
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