From: Ilan Peer ilan.peer@intel.com
[ Upstream commit ce19801ba75a902ab515dda03b57738c708d0781 ]
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.Ieebfa889d0820... Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/wireless/intel/iwlwifi/mvm/rs-fw.c | 29 ++++++++++++++----- 1 file changed, 21 insertions(+), 8 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c index 80ef238a84884..ca99a9c4f70ef 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c @@ -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]); } }