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authorSujith Manoharan <c_manoha@qca.qualcomm.com>2013-06-17 14:24:36 +0530
committerJohn W. Linville <linville@tuxdriver.com>2013-06-17 14:38:52 -0400
commit55fee98a6e732bea9f2da986b458e68ea462c584 (patch)
tree139b59e4162740de83b292907dfdef161c42530d /drivers/net/wireless/ath/ath9k
parentbac76a3d07133f6d9389689f3693b78f68b77adb (diff)
ath9k: Fix ANI for AP mode
The commit "ath9k: Fix ANI monitoring" reverted an earlier commit that adjusted ANI to improve performance. But, this causes adverse effects in AP mode (as reported by Felix based on an OpenWrt report). Use the older INI/period configuration for now until more testing is done. Cc: Felix Fietkau <nbd@openwrt.org> Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k')
-rw-r--r--drivers/net/wireless/ath/ath9k/ani.c29
-rw-r--r--drivers/net/wireless/ath/ath9k/ani.h6
2 files changed, 17 insertions, 18 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ani.c b/drivers/net/wireless/ath/ath9k/ani.c
index a68beb19ce4..4994bea809e 100644
--- a/drivers/net/wireless/ath/ath9k/ani.c
+++ b/drivers/net/wireless/ath/ath9k/ani.c
@@ -186,6 +186,14 @@ static void ath9k_hw_set_ofdm_nil(struct ath_hw *ah, u8 immunityLevel,
ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
entry_ofdm->ofdm_weak_signal_on);
}
+
+ if (aniState->ofdmNoiseImmunityLevel >= ATH9K_ANI_OFDM_DEF_LEVEL) {
+ ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH;
+ ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW_ABOVE_INI;
+ } else {
+ ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH_BELOW_INI;
+ ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW;
+ }
}
static void ath9k_hw_ani_ofdm_err_trigger(struct ath_hw *ah)
@@ -420,25 +428,12 @@ void ath9k_hw_ani_monitor(struct ath_hw *ah, struct ath9k_channel *chan)
ofdmPhyErrRate, aniState->cckNoiseImmunityLevel,
cckPhyErrRate, aniState->ofdmsTurn);
- if (aniState->listenTime > 5 * ah->aniperiod) {
- /*
- * Check if we need to lower immunity if
- * 5 ani_periods have passed.
- */
- if (ofdmPhyErrRate <= ah->config.ofdm_trig_low &&
- cckPhyErrRate <= ah->config.cck_trig_low) {
+ if (aniState->listenTime > ah->aniperiod) {
+ if (cckPhyErrRate < ah->config.cck_trig_low &&
+ ofdmPhyErrRate < ah->config.ofdm_trig_low) {
ath9k_hw_ani_lower_immunity(ah);
aniState->ofdmsTurn = !aniState->ofdmsTurn;
- }
- ath9k_ani_restart(ah);
- } else if (aniState->listenTime > ah->aniperiod) {
- /*
- * Check if immunity has to be raised,
- * (either OFDM or CCK).
- */
- if (ofdmPhyErrRate > ah->config.ofdm_trig_high &&
- (cckPhyErrRate <= ah->config.cck_trig_high ||
- aniState->ofdmsTurn)) {
+ } else if (ofdmPhyErrRate > ah->config.ofdm_trig_high) {
ath9k_hw_ani_ofdm_err_trigger(ah);
aniState->ofdmsTurn = false;
} else if (cckPhyErrRate > ah->config.cck_trig_high) {
diff --git a/drivers/net/wireless/ath/ath9k/ani.h b/drivers/net/wireless/ath/ath9k/ani.h
index 77a06fd4028..b54a3fb0188 100644
--- a/drivers/net/wireless/ath/ath9k/ani.h
+++ b/drivers/net/wireless/ath/ath9k/ani.h
@@ -20,8 +20,12 @@
#define BEACON_RSSI(ahp) (ahp->stats.avgbrssi)
/* units are errors per second */
-#define ATH9K_ANI_OFDM_TRIG_HIGH 1000
+#define ATH9K_ANI_OFDM_TRIG_HIGH 3500
+#define ATH9K_ANI_OFDM_TRIG_HIGH_BELOW_INI 1000
+
#define ATH9K_ANI_OFDM_TRIG_LOW 400
+#define ATH9K_ANI_OFDM_TRIG_LOW_ABOVE_INI 900
+
#define ATH9K_ANI_CCK_TRIG_HIGH 600
#define ATH9K_ANI_CCK_TRIG_LOW 300