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iwlwifi: mvm: Fix rate scale NSS configuration

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The TLC configuration did not take into consideration the station's
SMPS configuration, and thus configured rates for 2 NSS even if
static SMPS was reported by the station. Fix this.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200306151129.b4f940d13eca.Ieebfa889d08205a3a961ae0138fb5832e8a0f9c1@changeid
This commit is contained in:
Ilan Peer 2020-03-06 15:16:26 +02:00 committed by Luca Coelho
parent 699b760bd2
commit ce19801ba7
1 changed files with 21 additions and 8 deletions
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29
drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
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@ -6,7 +6,7 @@
* GPL LICENSE SUMMARY
*
* Copyright(c) 2017 Intel Deutschland GmbH
* Copyright(c) 2018 - 2019 Intel Corporation
* Copyright(c) 2018 - 2020 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
@ -27,7 +27,7 @@
* BSD LICENSE
*
* Copyright(c) 2017 Intel Deutschland GmbH
* Copyright(c) 2018 - 2019 Intel Corporation
* Copyright(c) 2018 - 2020 Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -195,11 +195,13 @@ rs_fw_vht_set_enabled_rates(const struct ieee80211_sta *sta,
{
u16 supp;
int i, highest_mcs;
u8 nss = sta->rx_nss;
for (i = 0; i < sta->rx_nss; i++) {
if (i == IWL_TLC_NSS_MAX)
break;
/* 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++) {
highest_mcs = rs_fw_vht_highest_rx_mcs_index(vht_cap, i + 1);
if (!highest_mcs)
continue;
@ -245,8 +247,13 @@ rs_fw_he_set_enabled_rates(const struct ieee80211_sta *sta,
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;
for (i = 0; i < sta->rx_nss && i < IWL_TLC_NSS_MAX; i++) {
/* 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;
@ -307,8 +314,14 @@ static void rs_fw_set_supp_rates(struct ieee80211_sta *sta,
cmd->mode = IWL_TLC_MNG_MODE_HT;
cmd->ht_rates[IWL_TLC_NSS_1][IWL_TLC_HT_BW_NONE_160] =
cpu_to_le16(ht_cap->mcs.rx_mask[0]);
cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_HT_BW_NONE_160] =
cpu_to_le16(ht_cap->mcs.rx_mask[1]);
/* the station support only a single receive chain */
if (sta->smps_mode == IEEE80211_SMPS_STATIC)
cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_HT_BW_NONE_160] =
0;
else
cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_HT_BW_NONE_160] =
cpu_to_le16(ht_cap->mcs.rx_mask[1]);
}
}