mac80211: minstrel_ht: ignore frame that was sent with noAck flag

QoS Data Frames that were sent with a No Ack policy should be ignored by
the minstrel statistics. There will never be an Ack for these frames so
there is no way to draw conclusions about the success of the transmission.
Signed-off-by: Philipp Borgers <borgers@mi.fu-berlin.de>
Link: https://lore.kernel.org/r/20210517120145.132814-1-borgers@mi.fu-berlin.deSigned-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/rc80211_minstrel_ht.c

@@ -1211,6 +1211,10 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
 	bool last, update = false;
 	int i;
 
+	/* Ignore packet that was sent with noAck flag */
+	if (info->flags & IEEE80211_TX_CTL_NO_ACK)
+		return;
+
 	/* This packet was aggregated but doesn't carry status info */
 	if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
 	    !(info->flags & IEEE80211_TX_STAT_AMPDU))