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[PATCH 4/8] iwlwifi: mvm: set A-MPDU bit upon empty BA notification from FW

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From: Gregory Greenman <gregory.greenman@xxxxxxxxx>

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@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
 drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
index e5d3eba2e82a..5fcc9dd6be56 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
@@ -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_sta *mvmsta;
 
+	ba_info.flags = IEEE80211_TX_STAT_AMPDU;
+
 	if (iwl_mvm_has_new_tx_api(mvm)) {
 		struct iwl_mvm_compressed_ba_notif *ba_res =
 			(void *)pkt->data;
-- 
2.13.2




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