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Commit f36369af authored by Rajkumar Manoharan's avatar Rajkumar Manoharan Committed by John W. Linville
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ath9k: Store noise immunity values across scanning 



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: default avatarRajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 93aead46

drivers/net/wireless/ath/ath9k/ani.c

+8 −2
Original line number Diff line number Diff line
@@ -273,6 +273,7 @@ static void ath9k_hw_set_ofdm_nil(struct ath_hw *ah, u8 immunityLevel) 
		immunityLevel, aniState->noiseFloor,

		aniState->rssiThrLow, aniState->rssiThrHigh);



	if (aniState->update_ani)

		aniState->ofdmNoiseImmunityLevel = immunityLevel;



	entry_ofdm = &ofdm_level_table[aniState->ofdmNoiseImmunityLevel];
@@ -346,6 +347,7 @@ 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;



	if (aniState->update_ani)

		aniState->cckNoiseImmunityLevel = immunityLevel;



	entry_ofdm = &ofdm_level_table[aniState->ofdmNoiseImmunityLevel];
@@ -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;

	}



	/*

drivers/net/wireless/ath/ath9k/ani.h

+1 −0
Original line number Diff line number Diff line
@@ -122,6 +122,7 @@ struct ar5416AniState { 
	u8 firstepLevel;

	u8 ofdmWeakSigDetectOff;

	u8 cckWeakSigThreshold;

	bool update_ani;

	u32 listenTime;

	int32_t rssiThrLow;

	int32_t rssiThrHigh;