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linux/linux-5.18.11/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c

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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2017 Intel Deutschland GmbH
* Copyright (C) 2018-2022 Intel Corporation
*/
#include "rs.h"
#include "fw-api.h"
#include "sta.h"
#include "iwl-op-mode.h"
#include "mvm.h"
static u8 rs_fw_bw_from_sta_bw(struct ieee80211_sta *sta)
{
switch (sta->bandwidth) {
case IEEE80211_STA_RX_BW_160:
return IWL_TLC_MNG_CH_WIDTH_160MHZ;
case IEEE80211_STA_RX_BW_80:
return IWL_TLC_MNG_CH_WIDTH_80MHZ;
case IEEE80211_STA_RX_BW_40:
return IWL_TLC_MNG_CH_WIDTH_40MHZ;
case IEEE80211_STA_RX_BW_20:
default:
return IWL_TLC_MNG_CH_WIDTH_20MHZ;
}
}
static u8 rs_fw_set_active_chains(u8 chains)
{
u8 fw_chains = 0;
if (chains & ANT_A)
fw_chains |= IWL_TLC_MNG_CHAIN_A_MSK;
if (chains & ANT_B)
fw_chains |= IWL_TLC_MNG_CHAIN_B_MSK;
return fw_chains;
}
static u8 rs_fw_sgi_cw_support(struct ieee80211_sta *sta)
{
struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
u8 supp = 0;
if (he_cap->has_he)
return 0;
if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
supp |= BIT(IWL_TLC_MNG_CH_WIDTH_20MHZ);
if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
supp |= BIT(IWL_TLC_MNG_CH_WIDTH_40MHZ);
if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_80)
supp |= BIT(IWL_TLC_MNG_CH_WIDTH_80MHZ);
if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_160)
supp |= BIT(IWL_TLC_MNG_CH_WIDTH_160MHZ);
return supp;
}
static u16 rs_fw_get_config_flags(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
struct ieee80211_supported_band *sband)
{
struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
bool vht_ena = vht_cap->vht_supported;
u16 flags = 0;
/* get STBC flags */
if (mvm->cfg->ht_params->stbc &&
(num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1)) {
if (he_cap->has_he && he_cap->he_cap_elem.phy_cap_info[2] &
IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ)
flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
else if (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK)
flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
else if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC)
flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
}
if (mvm->cfg->ht_params->ldpc &&
((ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) ||
(vht_ena && (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC))))
flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
/* consider LDPC support in case of HE */
if (he_cap->has_he && (he_cap->he_cap_elem.phy_cap_info[1] &
IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
if (sband->iftype_data && sband->iftype_data->he_cap.has_he &&
!(sband->iftype_data->he_cap.he_cap_elem.phy_cap_info[1] &
IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
flags &= ~IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
if (he_cap->has_he &&
(he_cap->he_cap_elem.phy_cap_info[3] &
IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK &&
sband->iftype_data &&
sband->iftype_data->he_cap.he_cap_elem.phy_cap_info[3] &
IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK))
flags |= IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK;
return flags;
}
static
int rs_fw_vht_highest_rx_mcs_index(const struct ieee80211_sta_vht_cap *vht_cap,
int nss)
{
u16 rx_mcs = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map) &
(0x3 << (2 * (nss - 1)));
rx_mcs >>= (2 * (nss - 1));
switch (rx_mcs) {
case IEEE80211_VHT_MCS_SUPPORT_0_7:
return IWL_TLC_MNG_HT_RATE_MCS7;
case IEEE80211_VHT_MCS_SUPPORT_0_8:
return IWL_TLC_MNG_HT_RATE_MCS8;
case IEEE80211_VHT_MCS_SUPPORT_0_9:
return IWL_TLC_MNG_HT_RATE_MCS9;
default:
WARN_ON_ONCE(1);
break;
}
return 0;
}
static void
rs_fw_vht_set_enabled_rates(const struct ieee80211_sta *sta,
const struct ieee80211_sta_vht_cap *vht_cap,
struct iwl_tlc_config_cmd_v4 *cmd)
{
u16 supp;
int i, highest_mcs;
u8 max_nss = sta->rx_nss;
struct ieee80211_vht_cap ieee_vht_cap = {
.vht_cap_info = cpu_to_le32(vht_cap->cap),
.supp_mcs = vht_cap->vht_mcs,
};
/* the station support only a single receive chain */
if (sta->smps_mode == IEEE80211_SMPS_STATIC)
max_nss = 1;
for (i = 0; i < max_nss && i < IWL_TLC_NSS_MAX; i++) {
int nss = i + 1;
highest_mcs = rs_fw_vht_highest_rx_mcs_index(vht_cap, nss);
if (!highest_mcs)
continue;
supp = BIT(highest_mcs + 1) - 1;
if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
supp &= ~BIT(IWL_TLC_MNG_HT_RATE_MCS9);
cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80] = cpu_to_le16(supp);
/*
* Check if VHT extended NSS indicates that the bandwidth/NSS
* configuration is supported - only for MCS 0 since we already
* decoded the MCS bits anyway ourselves.
*/
if (sta->bandwidth == IEEE80211_STA_RX_BW_160 &&
ieee80211_get_vht_max_nss(&ieee_vht_cap,
IEEE80211_VHT_CHANWIDTH_160MHZ,
0, true, nss) >= nss)
cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_160] =
cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80];
}
}
static u16 rs_fw_he_ieee80211_mcs_to_rs_mcs(u16 mcs)
{
switch (mcs) {
case IEEE80211_HE_MCS_SUPPORT_0_7:
return BIT(IWL_TLC_MNG_HT_RATE_MCS7 + 1) - 1;
case IEEE80211_HE_MCS_SUPPORT_0_9:
return BIT(IWL_TLC_MNG_HT_RATE_MCS9 + 1) - 1;
case IEEE80211_HE_MCS_SUPPORT_0_11:
return BIT(IWL_TLC_MNG_HT_RATE_MCS11 + 1) - 1;
case IEEE80211_HE_MCS_NOT_SUPPORTED:
return 0;
}
WARN(1, "invalid HE MCS %d\n", mcs);
return 0;
}
static void
rs_fw_he_set_enabled_rates(const struct ieee80211_sta *sta,
struct ieee80211_supported_band *sband,
struct iwl_tlc_config_cmd_v4 *cmd)
{
const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
u16 mcs_160 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
u16 mcs_80 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80);
u16 tx_mcs_80 =
le16_to_cpu(sband->iftype_data->he_cap.he_mcs_nss_supp.tx_mcs_80);
u16 tx_mcs_160 =
le16_to_cpu(sband->iftype_data->he_cap.he_mcs_nss_supp.tx_mcs_160);
int i;
u8 nss = sta->rx_nss;
/* the station support only a single receive chain */
if (sta->smps_mode == IEEE80211_SMPS_STATIC)
nss = 1;
for (i = 0; i < nss && i < IWL_TLC_NSS_MAX; i++) {
u16 _mcs_160 = (mcs_160 >> (2 * i)) & 0x3;
u16 _mcs_80 = (mcs_80 >> (2 * i)) & 0x3;
u16 _tx_mcs_160 = (tx_mcs_160 >> (2 * i)) & 0x3;
u16 _tx_mcs_80 = (tx_mcs_80 >> (2 * i)) & 0x3;
/* If one side doesn't support - mark both as not supporting */
if (_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
_tx_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
_tx_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
}
if (_mcs_80 > _tx_mcs_80)
_mcs_80 = _tx_mcs_80;
cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80] =
cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_80));
/* If one side doesn't support - mark both as not supporting */
if (_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
_tx_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
_tx_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
}
if (_mcs_160 > _tx_mcs_160)
_mcs_160 = _tx_mcs_160;
cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_160] =
cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_160));
}
}
static void rs_fw_set_supp_rates(struct ieee80211_sta *sta,
struct ieee80211_supported_band *sband,
struct iwl_tlc_config_cmd_v4 *cmd)
{
int i;
u16 supp = 0;
unsigned long tmp; /* must be unsigned long for for_each_set_bit */
const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
/* non HT rates */
tmp = sta->supp_rates[sband->band];
for_each_set_bit(i, &tmp, BITS_PER_LONG)
supp |= BIT(sband->bitrates[i].hw_value);
cmd->non_ht_rates = cpu_to_le16(supp);
cmd->mode = IWL_TLC_MNG_MODE_NON_HT;
/* HT/VHT rates */
if (he_cap->has_he) {
cmd->mode = IWL_TLC_MNG_MODE_HE;
rs_fw_he_set_enabled_rates(sta, sband, cmd);
} else if (vht_cap->vht_supported) {
cmd->mode = IWL_TLC_MNG_MODE_VHT;
rs_fw_vht_set_enabled_rates(sta, vht_cap, cmd);
} else if (ht_cap->ht_supported) {
cmd->mode = IWL_TLC_MNG_MODE_HT;
cmd->ht_rates[IWL_TLC_NSS_1][IWL_TLC_MCS_PER_BW_80] =
cpu_to_le16(ht_cap->mcs.rx_mask[0]);
/* the station support only a single receive chain */
if (sta->smps_mode == IEEE80211_SMPS_STATIC)
cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_MCS_PER_BW_80] =
0;
else
cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_MCS_PER_BW_80] =
cpu_to_le16(ht_cap->mcs.rx_mask[1]);
}
}
void iwl_mvm_tlc_update_notif(struct iwl_mvm *mvm,
struct iwl_rx_cmd_buffer *rxb)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_tlc_update_notif *notif;
struct ieee80211_sta *sta;
struct iwl_mvm_sta *mvmsta;
struct iwl_lq_sta_rs_fw *lq_sta;
u32 flags;
rcu_read_lock();
notif = (void *)pkt->data;
sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
if (IS_ERR_OR_NULL(sta)) {
/* can happen in remove station flow where mvm removed internally
* the station before removing from FW
*/
IWL_DEBUG_RATE(mvm,
"Invalid mvm RCU pointer for sta id (%d) in TLC notification\n",
notif->sta_id);
goto out;
}
mvmsta = iwl_mvm_sta_from_mac80211(sta);
if (!mvmsta) {
IWL_ERR(mvm, "Invalid sta id (%d) in FW TLC notification\n",
notif->sta_id);
goto out;
}
flags = le32_to_cpu(notif->flags);
lq_sta = &mvmsta->lq_sta.rs_fw;
if (flags & IWL_TLC_NOTIF_FLAG_RATE) {
char pretty_rate[100];
if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
TLC_MNG_UPDATE_NOTIF, 0) < 3) {
rs_pretty_print_rate_v1(pretty_rate,
sizeof(pretty_rate),
le32_to_cpu(notif->rate));
IWL_DEBUG_RATE(mvm,
"Got rate in old format. Rate: %s. Converting.\n",
pretty_rate);
lq_sta->last_rate_n_flags =
iwl_new_rate_from_v1(le32_to_cpu(notif->rate));
} else {
lq_sta->last_rate_n_flags = le32_to_cpu(notif->rate);
}
rs_pretty_print_rate(pretty_rate, sizeof(pretty_rate),
lq_sta->last_rate_n_flags);
IWL_DEBUG_RATE(mvm, "new rate: %s\n", pretty_rate);
}
if (flags & IWL_TLC_NOTIF_FLAG_AMSDU && !mvmsta->orig_amsdu_len) {
u16 size = le32_to_cpu(notif->amsdu_size);
int i;
if (sta->max_amsdu_len < size) {
/*
* In debug sta->max_amsdu_len < size
* so also check with orig_amsdu_len which holds the
* original data before debugfs changed the value
*/
WARN_ON(mvmsta->orig_amsdu_len < size);
goto out;
}
mvmsta->amsdu_enabled = le32_to_cpu(notif->amsdu_enabled);
mvmsta->max_amsdu_len = size;
sta->max_rc_amsdu_len = mvmsta->max_amsdu_len;
for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
if (mvmsta->amsdu_enabled & BIT(i))
sta->max_tid_amsdu_len[i] =
iwl_mvm_max_amsdu_size(mvm, sta, i);
else
/*
* Not so elegant, but this will effectively
* prevent AMSDU on this TID
*/
sta->max_tid_amsdu_len[i] = 1;
}
IWL_DEBUG_RATE(mvm,
"AMSDU update. AMSDU size: %d, AMSDU selected size: %d, AMSDU TID bitmap 0x%X\n",
le32_to_cpu(notif->amsdu_size), size,
mvmsta->amsdu_enabled);
}
out:
rcu_read_unlock();
}
u16 rs_fw_get_max_amsdu_len(struct ieee80211_sta *sta)
{
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
if (mvmsta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) {
switch (le16_get_bits(sta->he_6ghz_capa.capa,
IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
return IEEE80211_MAX_MPDU_LEN_VHT_11454;
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
return IEEE80211_MAX_MPDU_LEN_VHT_7991;
default:
return IEEE80211_MAX_MPDU_LEN_VHT_3895;
}
} else
if (vht_cap->vht_supported) {
switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
return IEEE80211_MAX_MPDU_LEN_VHT_11454;
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
return IEEE80211_MAX_MPDU_LEN_VHT_7991;
default:
return IEEE80211_MAX_MPDU_LEN_VHT_3895;
}
} else if (ht_cap->ht_supported) {
if (ht_cap->cap & IEEE80211_HT_CAP_MAX_AMSDU)
/*
* agg is offloaded so we need to assume that agg
* are enabled and max mpdu in ampdu is 4095
* (spec 802.11-2016 9.3.2.1)
*/
return IEEE80211_MAX_MPDU_LEN_HT_BA;
else
return IEEE80211_MAX_MPDU_LEN_HT_3839;
}
/* in legacy mode no amsdu is enabled so return zero */
return 0;
}
void rs_fw_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
enum nl80211_band band, bool update)
{
struct ieee80211_hw *hw = mvm->hw;
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, TLC_MNG_CONFIG_CMD);
struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
u16 max_amsdu_len = rs_fw_get_max_amsdu_len(sta);
struct iwl_tlc_config_cmd_v4 cfg_cmd = {
.sta_id = mvmsta->sta_id,
.max_ch_width = update ?
rs_fw_bw_from_sta_bw(sta) : RATE_MCS_CHAN_WIDTH_20,
.flags = cpu_to_le16(rs_fw_get_config_flags(mvm, sta, sband)),
.chains = rs_fw_set_active_chains(iwl_mvm_get_valid_tx_ant(mvm)),
.sgi_ch_width_supp = rs_fw_sgi_cw_support(sta),
.max_mpdu_len = iwl_mvm_is_csum_supported(mvm) ?
cpu_to_le16(max_amsdu_len) : 0,
};
int ret;
int cmd_ver;
memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers));
#ifdef CONFIG_IWLWIFI_DEBUGFS
iwl_mvm_reset_frame_stats(mvm);
#endif
rs_fw_set_supp_rates(sta, sband, &cfg_cmd);
/*
* since TLC offload works with one mode we can assume
* that only vht/ht is used and also set it as station max amsdu
*/
sta->max_amsdu_len = max_amsdu_len;
cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
WIDE_ID(DATA_PATH_GROUP,
TLC_MNG_CONFIG_CMD),
0);
IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, sta_id=%d, max_ch_width=%d, mode=%d\n",
cfg_cmd.sta_id, cfg_cmd.max_ch_width, cfg_cmd.mode);
IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, chains=0x%X, ch_wid_supp=%d, flags=0x%X\n",
cfg_cmd.chains, cfg_cmd.sgi_ch_width_supp, cfg_cmd.flags);
IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, mpdu_len=%d, no_ht_rate=0x%X, tx_op=%d\n",
cfg_cmd.max_mpdu_len, cfg_cmd.non_ht_rates, cfg_cmd.max_tx_op);
IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][0]=0x%X, ht_rate[1][0]=0x%X\n",
cfg_cmd.ht_rates[0][0], cfg_cmd.ht_rates[1][0]);
IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][1]=0x%X, ht_rate[1][1]=0x%X\n",
cfg_cmd.ht_rates[0][1], cfg_cmd.ht_rates[1][1]);
IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][2]=0x%X, ht_rate[1][2]=0x%X\n",
cfg_cmd.ht_rates[0][2], cfg_cmd.ht_rates[1][2]);
if (cmd_ver == 4) {
ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC,
sizeof(cfg_cmd), &cfg_cmd);
} else if (cmd_ver < 4) {
struct iwl_tlc_config_cmd_v3 cfg_cmd_v3 = {
.sta_id = cfg_cmd.sta_id,
.max_ch_width = cfg_cmd.max_ch_width,
.mode = cfg_cmd.mode,
.chains = cfg_cmd.chains,
.amsdu = !!cfg_cmd.max_mpdu_len,
.flags = cfg_cmd.flags,
.non_ht_rates = cfg_cmd.non_ht_rates,
.ht_rates[0][0] = cfg_cmd.ht_rates[0][0],
.ht_rates[0][1] = cfg_cmd.ht_rates[0][1],
.ht_rates[1][0] = cfg_cmd.ht_rates[1][0],
.ht_rates[1][1] = cfg_cmd.ht_rates[1][1],
.sgi_ch_width_supp = cfg_cmd.sgi_ch_width_supp,
.max_mpdu_len = cfg_cmd.max_mpdu_len,
};
u16 cmd_size = sizeof(cfg_cmd_v3);
/* In old versions of the API the struct is 4 bytes smaller */
if (iwl_fw_lookup_cmd_ver(mvm->fw,
WIDE_ID(DATA_PATH_GROUP,
TLC_MNG_CONFIG_CMD), 0) < 3)
cmd_size -= 4;
ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC, cmd_size,
&cfg_cmd_v3);
} else {
ret = -EINVAL;
}
if (ret)
IWL_ERR(mvm, "Failed to send rate scale config (%d)\n", ret);
}
int rs_fw_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
bool enable)
{
/* TODO: need to introduce a new FW cmd since LQ cmd is not relevant */
IWL_DEBUG_RATE(mvm, "tx protection - not implemented yet.\n");
return 0;
}
void iwl_mvm_rs_add_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta)
{
struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
IWL_DEBUG_RATE(mvm, "create station rate scale window\n");
lq_sta->pers.drv = mvm;
lq_sta->pers.sta_id = mvmsta->sta_id;
lq_sta->pers.chains = 0;
memset(lq_sta->pers.chain_signal, 0, sizeof(lq_sta->pers.chain_signal));
lq_sta->pers.last_rssi = S8_MIN;
lq_sta->last_rate_n_flags = 0;
#ifdef CONFIG_MAC80211_DEBUGFS
lq_sta->pers.dbg_fixed_rate = 0;
#endif
}
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