[PATCH] ath10k: request firmware flush in ath10k_flush.

greearb at candelatech.com greearb at candelatech.com
Fri Sep 19 11:28:24 PDT 2014

From: Ben Greear <greearb at candelatech.com>

CT firmware now supports flushing all tids for all
peers for all vdevs.  This appears to help the ath10k_flush
logic work faster and not cause timeouts.

Signed-off-by: Ben Greear <greearb at candelatech.com>

This requires the previously-sent patch that enables the
ATH10K_FW_FEATURE_WMI_10X_CT feature bit.  This patch provide
a nice improvement in stability and flush performance in my
testing scenarios.

 drivers/net/wireless/ath/ath10k/mac.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index af24f6c..6014856 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3830,6 +3830,7 @@ static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	struct ath10k *ar = hw->priv;
 	bool skip;
 	int ret;
+	u8 peer_addr[ETH_ALEN] = {0};
 	/* mac80211 doesn't care if we really xmit queued frames or not
 	 * we'll collect those frames either way if we stop/delete vdevs */
@@ -3841,6 +3842,12 @@ static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	if (ar->state == ATH10K_STATE_WEDGED)
 		goto skip;
+	/* If we are CT firmware, ask it to flush all tids on all peers on
+	 * all vdevs.  Normal firmware will just crash if you do this.
+	 */
+	if (test_bit(ATH10K_FW_FEATURE_WMI_10X_CT, ar->fw_features))
+		ath10k_wmi_peer_flush(ar, 0xFFFFFFFF, peer_addr, 0xFFFFFFFF);
 	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
 			bool empty;

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