ath9k: add a patch to show excessive retry counts for single MPDUs

SVN-Revision: 26711

package/mac80211/patches/570-ath9k_debugfs_show_xretry.patch

@@ -0,0 +1,32 @@
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -543,6 +543,7 @@ static ssize_t read_file_xmit(struct fil
+ 
+ 	PR("MPDUs Queued:    ", queued);
+ 	PR("MPDUs Completed: ", completed);
++	PR("MPDUs XRetried:  ", xretries);
+ 	PR("Aggregates:      ", a_aggr);
+ 	PR("AMPDUs Queued HW:", a_queued_hw);
+ 	PR("AMPDUs Queued SW:", a_queued_sw);
+@@ -798,7 +799,10 @@ void ath_debug_stat_tx(struct ath_softc 
+ 		else
+ 			TX_STAT_INC(qnum, a_completed);
+ 	} else {
+-		TX_STAT_INC(qnum, completed);
++		if (bf_isxretried(bf))
++			TX_STAT_INC(qnum, xretries);
++		else
++			TX_STAT_INC(qnum, completed);
+ 	}
+ 
+ 	if (ts->ts_status & ATH9K_TXERR_FIFO)
+--- a/drivers/net/wireless/ath/ath9k/debug.h
++++ b/drivers/net/wireless/ath/ath9k/debug.h
+@@ -112,6 +112,7 @@ struct ath_tx_stats {
+ 	u32 tx_bytes_all;
+ 	u32 queued;
+ 	u32 completed;
++	u32 xretries;
+ 	u32 a_aggr;
+ 	u32 a_queued_hw;
+ 	u32 a_queued_sw;