Commit 9465c3f8 authored Jul 06, 2017 by Gregory Greenman Committed by Luca Coelho Aug 01, 2017

iwlwifi: mvm: set A-MPDU bit upon empty BA notification from FW



The bit was set only if there was at least one reclaimed frame in an
aggregation. It's important to set it also in the case that the whole
A-MPDU was lost, otherwise rate scaling statistics will not be
updated correctly. Thus, set it always in ba notification handler.

This fixes a throughput degradation of about 20% in certain scenarios
with multiple streams on 11ac.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

parent 92b0f7b2

drivers/net/wireless/intel/iwlwifi/mvm/tx.c

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1821,6 +1821,8 @@ void iwl_mvm_rx_ba_notif(struct iwl_mvm mvm, struct iwl_rx_cmd_buffer rxb)
	struct iwl_mvm_tid_data *tid_data;		struct iwl_mvm_tid_data *tid_data;
	struct iwl_mvm_sta *mvmsta;		struct iwl_mvm_sta *mvmsta;

			ba_info.flags = IEEE80211_TX_STAT_AMPDU;

	if (iwl_mvm_has_new_tx_api(mvm)) {		if (iwl_mvm_has_new_tx_api(mvm)) {
	struct iwl_mvm_compressed_ba_notif *ba_res =		struct iwl_mvm_compressed_ba_notif *ba_res =
	(void *)pkt->data;		(void *)pkt->data;