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iwlwifi: rs: set RTS protection for all non legacy rates

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This helps with congested environments reducing the conflict cost to
RTS retries only, instead of the entire BA packet.

Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200928121852.da97d87d7adf.If06301d4660b14e459195a15831b069b9f6c5e3c@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Mordechay Goodstein 2020-09-28 12:23:16 +03:00 committed by Luca Coelho
parent 9e3c39361a
commit 507a13f5c9
2 changed files with 15 additions and 2 deletions
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11
drivers/net/wireless/intel/iwlwifi/fw/api/rs.h
View File

@ -7,7 +7,7 @@
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* 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
@ -29,7 +29,7 @@
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* 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
@ -486,6 +486,13 @@ enum {
#define RATE_MCS_HE_106T_POS 28
#define RATE_MCS_HE_106T_MSK (1 << RATE_MCS_HE_106T_POS)
/* Bit 30-31: (1) RTS, (2) CTS */
#define RATE_MCS_RTS_REQUIRED_POS (30)
#define RATE_MCS_RTS_REQUIRED_MSK (0x1 << RATE_MCS_RTS_REQUIRED_POS)
#define RATE_MCS_CTS_REQUIRED_POS (31)
#define RATE_MCS_CTS_REQUIRED_MSK (0x1 << RATE_MCS_CTS_REQUIRED_POS)
/* Link Quality definitions */
/* # entries in rate scale table to support Tx retries */

6
drivers/net/wireless/intel/iwlwifi/mvm/rs.c
View File

@ -830,6 +830,12 @@ static u32 ucode_rate_from_rs_rate(struct iwl_mvm *mvm,
return ucode_rate;
}
/* set RTS protection for all non legacy rates
* This helps with congested environments reducing the conflict cost to
* RTS retries only, instead of the entire BA packet.
*/
ucode_rate |= RATE_MCS_RTS_REQUIRED_MSK;
if (is_ht(rate)) {
if (index < IWL_FIRST_HT_RATE || index > IWL_LAST_HT_RATE) {
IWL_ERR(mvm, "Invalid HT rate index %d\n", index);