[PATCH v2 10/10] ath10k: request firmware flush in ath10k_flush.

[greearb at candelatech.com]

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>
---

v2:  No changes, just added it to the series in case it
  helps justify adding the CT feature flag.

 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 34ec992..bde3a2f 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3917,6 +3917,7 @@ 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 */
@@ -3928,6 +3929,12 @@ 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;
 
-- 
1.7.11.7