diff mbox series

[13/15] iwlwifi: mvm: avoid sending too many BARs

Message ID 20180821063657.30071-14-luca@coelho.fi (mailing list archive)
State Accepted
Delegated to: Luca Coelho
Headers show
Series iwlwifi: updates intended for v4.20 2018-08-21 | expand

Commit Message

Luca Coelho Aug. 21, 2018, 6:36 a.m. UTC 
From: Sara Sharon <sara.sharon@intel.com>

When we receive TX response, we may release a few packets
due to a hole that was closed in the transmission window.

However, if that frame failed, we will mark all the released
frames as failed and will send multiple BARs.

This affects statistics badly, and cause unnecessary frames
transmission.

Instead, mark all the following packets as success, with the
desired result of sending a bar for the failed frame only.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
index 31a81a4c6e78..b33b8357a8f7 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
@@ -1510,6 +1510,14 @@  static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
 			break;
 		}
 
+		/*
+		 * If we are freeing multiple frames, mark all the frames
+		 * but the first one as acked, since they were acknowledged
+		 * before
+		 * */
+		if (skb_freed > 1)
+			info->flags |= IEEE80211_TX_STAT_ACK;
+
 		iwl_mvm_tx_status_check_trigger(mvm, status);
 
 		info->status.rates[0].count = tx_resp->failure_frame + 1;