iwlwifi: rs: option to easily disable Tx MIMO (dc574e52) · Commits · 戴 / test

The current TLC isn't optimized for low latency and some devices have issues with MIMO. This kind of combo creates latency issues. Allow to temporarily disable MIMO for tests in order to solve the latency issues without the added complexity of MIMO. Signed-off-by:

Eyal Shapira <eyalx.shapira@intel.com> Signed-off-by:

Arik Nemtsov <arikx.nemtsov@intel.com> Signed-off-by:

Emmanuel Grumbach <emmanuel.grumbach@intel.com>

drivers/net/wireless/iwlwifi/mvm/constants.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -95,5 +95,6 @@
		#define IWL_MVM_FW_MCAST_FILTER_PASS_ALL 0
		#define IWL_MVM_QUOTA_THRESHOLD 8
		#define IWL_MVM_RS_RSSI_BASED_INIT_RATE 0
		#define IWL_MVM_RS_DISABLE_MIMO 0

		#endif /* __MVM_CONSTANTS_H */

drivers/net/wireless/iwlwifi/mvm/rs.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -2684,6 +2684,9 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm mvm, struct ieee80211_sta sta,
		lq_sta->ldpc = true;
		}

		if (IWL_MVM_RS_DISABLE_MIMO)
		lq_sta->active_mimo2_rate = 0;

		lq_sta->max_legacy_rate_idx = find_last_bit(&lq_sta->active_legacy_rate,
		BITS_PER_LONG);
		lq_sta->max_siso_rate_idx = find_last_bit(&lq_sta->active_siso_rate,

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