[RFC] ath9k: improve aggregation throughput by using only first rate

Commit Message

Björn Smedman July 26, 2010, 5:10 p.m. UTC

None

Patch

diff -urpN a/drivers/net/wireless/ath/ath9k/xmit.c
b/drivers/net/wireless/ath/ath9k/xmit.c
--- a/drivers/net/wireless/ath/ath9k/xmit.c	2010-07-26 15:35:17.000000000 +0200
+++ b/drivers/net/wireless/ath/ath9k/xmit.c	2010-07-26 17:11:33.000000000 +0200
@@ -565,7 +565,7 @@  static u32 ath_lookup_rate(struct ath_so
 	 */
 	max_4ms_framelen = ATH_AMPDU_LIMIT_MAX;

-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < 1; i++) {
 		if (rates[i].count) {
 			int modeidx;
 			if (!(rates[i].flags & IEEE80211_TX_RC_MCS)) {
@@ -1553,6 +1553,9 @@  static void ath_buf_set_rate(struct ath_
 	if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
 		ctsrate |= rate->hw_value_short;

+	if (bf_isaggr(bf))
+		rates[1].count = rates[2].count = rates[3].count = 0;
+
 	for (i = 0; i < 4; i++) {
 		bool is_40, is_sgi, is_sp;
 		int phy;