All of lore.kernel.org
 help / color / mirror / Atom feed
From: Luca Coelho <luca@coelho.fi>
To: kvalo@codeaurora.org
Cc: linux-wireless@vger.kernel.org
Subject: [PATCH v5.6 6/7] iwlwifi: mvm: Fix rate scale NSS configuration
Date: Fri,  6 Mar 2020 15:16:26 +0200	[thread overview]
Message-ID: <iwlwifi.20200306151129.b4f940d13eca.Ieebfa889d08205a3a961ae0138fb5832e8a0f9c1@changeid> (raw)
In-Reply-To: <20200306131627.503176-1-luca@coelho.fi>

From: Ilan Peer <ilan.peer@intel.com>

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>
---
 .../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 80ef238a8488..ca99a9c4f70e 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]);
 	}
 }
 
-- 
2.25.1


  parent reply	other threads:[~2020-03-06 13:16 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-06 13:16 [PATCH v5.6 0/7] iwlwifi: fixes intended for 5.6 2020-03-06 Luca Coelho
2020-03-06 13:16 ` [PATCH v5.6 1/7] iwlwifi: mvm: take the required lock when clearing time event data Luca Coelho
2020-03-06 13:16 ` [PATCH v5.6 2/7] iwlwifi: consider HE capability when setting LDPC Luca Coelho
2020-03-06 13:16 ` [PATCH v5.6 3/7] iwlwifi: check allocated pointer when allocating conf_tlvs Luca Coelho
2020-03-06 13:16 ` [PATCH v5.6 4/7] iwlwifi: yoyo: don't add TLV offset when reading FIFOs Luca Coelho
2020-03-06 13:16 ` [PATCH v5.6 5/7] iwlwifi: dbg: don't abort if sending DBGC_SUSPEND_RESUME fails Luca Coelho
2020-03-06 13:16 ` Luca Coelho [this message]
2020-03-06 13:16 ` [PATCH v5.6 7/7] iwlwifi: cfg: use antenna diversity with all AX101 devices Luca Coelho

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=iwlwifi.20200306151129.b4f940d13eca.Ieebfa889d08205a3a961ae0138fb5832e8a0f9c1@changeid \
    --to=luca@coelho.fi \
    --cc=kvalo@codeaurora.org \
    --cc=linux-wireless@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.