Return-path: Received: from wolverine01.qualcomm.com ([199.106.114.254]:11167 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751131Ab1ISOpL (ORCPT ); Mon, 19 Sep 2011 10:45:11 -0400 From: Rajkumar Manoharan To: CC: , Rajkumar Manoharan Subject: [PATCH] ath9k: Store noise immunity values across scanning Date: Mon, 19 Sep 2011 20:15:48 +0530 Message-ID: <1316443548-22991-1-git-send-email-rmanohar@qca.qualcomm.com> (sfid-20110919_164516_401504_3B91C067) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: CCK/OFDM noise immunilty values are always reset to defaults during bgscan. This could affect the link quality and performance when the STA is associated in a noisy channel. So do not override the learned values across the scanning. Signed-off-by: Rajkumar Manoharan --- drivers/net/wireless/ath/ath9k/ani.c | 10 ++++++++-- drivers/net/wireless/ath/ath9k/ani.h | 1 + 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ani.c b/drivers/net/wireless/ath/ath9k/ani.c index d969a11..01240d6 100644 --- a/drivers/net/wireless/ath/ath9k/ani.c +++ b/drivers/net/wireless/ath/ath9k/ani.c @@ -273,7 +273,8 @@ static void ath9k_hw_set_ofdm_nil(struct ath_hw *ah, u8 immunityLevel) immunityLevel, aniState->noiseFloor, aniState->rssiThrLow, aniState->rssiThrHigh); - aniState->ofdmNoiseImmunityLevel = immunityLevel; + if (aniState->update_ani) + aniState->ofdmNoiseImmunityLevel = immunityLevel; entry_ofdm = &ofdm_level_table[aniState->ofdmNoiseImmunityLevel]; entry_cck = &cck_level_table[aniState->cckNoiseImmunityLevel]; @@ -346,7 +347,8 @@ static void ath9k_hw_set_cck_nil(struct ath_hw *ah, u_int8_t immunityLevel) immunityLevel > ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI) immunityLevel = ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI; - aniState->cckNoiseImmunityLevel = immunityLevel; + if (aniState->update_ani) + aniState->cckNoiseImmunityLevel = immunityLevel; entry_ofdm = &ofdm_level_table[aniState->ofdmNoiseImmunityLevel]; entry_cck = &cck_level_table[aniState->cckNoiseImmunityLevel]; @@ -593,6 +595,7 @@ void ath9k_ani_reset(struct ath_hw *ah, bool is_scanning) aniState->ofdmNoiseImmunityLevel, aniState->cckNoiseImmunityLevel); + aniState->update_ani = false; ath9k_hw_set_ofdm_nil(ah, ATH9K_ANI_OFDM_DEF_LEVEL); ath9k_hw_set_cck_nil(ah, ATH9K_ANI_CCK_DEF_LEVEL); } @@ -609,6 +612,7 @@ void ath9k_ani_reset(struct ath_hw *ah, bool is_scanning) aniState->ofdmNoiseImmunityLevel, aniState->cckNoiseImmunityLevel); + aniState->update_ani = true; ath9k_hw_set_ofdm_nil(ah, aniState->ofdmNoiseImmunityLevel); ath9k_hw_set_cck_nil(ah, @@ -892,6 +896,8 @@ void ath9k_hw_ani_init(struct ath_hw *ah) ani->ofdmWeakSigDetectOff = !ATH9K_ANI_USE_OFDM_WEAK_SIG; ani->cckNoiseImmunityLevel = ATH9K_ANI_CCK_DEF_LEVEL; + ani->ofdmNoiseImmunityLevel = ATH9K_ANI_OFDM_DEF_LEVEL; + ani->update_ani = false; } /* diff --git a/drivers/net/wireless/ath/ath9k/ani.h b/drivers/net/wireless/ath/ath9k/ani.h index a547005..83029d6 100644 --- a/drivers/net/wireless/ath/ath9k/ani.h +++ b/drivers/net/wireless/ath/ath9k/ani.h @@ -122,6 +122,7 @@ struct ar5416AniState { u8 firstepLevel; u8 ofdmWeakSigDetectOff; u8 cckWeakSigThreshold; + bool update_ani; u32 listenTime; int32_t rssiThrLow; int32_t rssiThrHigh; -- 1.7.6.1