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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-02-19 00:47:32 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-02-19 00:47:32 +0000
commitb52c3994118b9681e5854f811cc50850c22f6ad7 (patch)
tree8f32aa8b3f4fd9cc84454696e08eb3f992f3f2fb /package/mac80211/patches
parent13278fa5e8209be976640091026dc1beb7401517 (diff)
ath9k: fix rate control fallback rate selection - improves throughput and link stability
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19716 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/mac80211/patches')
-rw-r--r--package/mac80211/patches/530-ath9k_rc_fallback.patch55
1 files changed, 55 insertions, 0 deletions
diff --git a/package/mac80211/patches/530-ath9k_rc_fallback.patch b/package/mac80211/patches/530-ath9k_rc_fallback.patch
new file mode 100644
index 000000000..1b74eb5b1
--- /dev/null
+++ b/package/mac80211/patches/530-ath9k_rc_fallback.patch
@@ -0,0 +1,55 @@
+--- a/drivers/net/wireless/ath/ath9k/rc.c
++++ b/drivers/net/wireless/ath/ath9k/rc.c
+@@ -668,7 +668,7 @@ static void ath_get_rate(void *priv, str
+ struct ieee80211_tx_rate *rates = tx_info->control.rates;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ __le16 fc = hdr->frame_control;
+- u8 try_per_rate, i = 0, rix, nrix;
++ u8 try_per_rate, i = 0, rix;
+ int is_probe = 0;
+
+ if (rate_control_send_low(sta, priv_sta, txrc))
+@@ -688,26 +688,25 @@ static void ath_get_rate(void *priv, str
+
+ rate_table = sc->cur_rate_table;
+ rix = ath_rc_get_highest_rix(sc, ath_rc_priv, rate_table, &is_probe);
+- nrix = rix;
+
+ if (is_probe) {
+ /* set one try for probe rates. For the
+ * probes don't enable rts */
+ ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
+- 1, nrix, 0);
++ 1, rix, 0);
+
+ /* Get the next tried/allowed rate. No RTS for the next series
+ * after the probe rate
+ */
+- ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &nrix);
++ ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &rix);
+ ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
+- try_per_rate, nrix, 0);
++ try_per_rate, rix, 0);
+
+ tx_info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+ } else {
+ /* Set the choosen rate. No RTS for first series entry. */
+ ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
+- try_per_rate, nrix, 0);
++ try_per_rate, rix, 0);
+ }
+
+ /* Fill in the other rates for multirate retry */
+@@ -716,10 +715,10 @@ static void ath_get_rate(void *priv, str
+ if (i + 1 == 4)
+ try_per_rate = 8;
+
+- ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &nrix);
++ ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &rix);
+ /* All other rates in the series have RTS enabled */
+ ath_rc_rate_set_series(rate_table, &rates[i], txrc,
+- try_per_rate, nrix, 1);
++ try_per_rate, rix, 1);
+ }
+
+ /*