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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>
This commit is contained in:
Sujith Manoharan 2013-06-17 14:24:36 +05:30 committed by John W. Linville
parent bac76a3d07
commit 55fee98a6e
2 changed files with 17 additions and 18 deletions
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29
drivers/net/wireless/ath/ath9k/ani.c
View File

@ -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) {

6
drivers/net/wireless/ath/ath9k/ani.h
View File

@ -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