From: Felix Fietkau Date: Mon, 22 Nov 2010 14:39:39 +0000 (+0100) Subject: ath9k_hw: fix A-MPDU key search issues on AR9003 X-Git-Tag: firefly_0821_release~7613^2~3122^2~169^2^2~201 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=02d2ebb2a0aa2cae0446289c8f927067aec06079;p=firefly-linux-kernel-4.4.55.git ath9k_hw: fix A-MPDU key search issues on AR9003 Under load, a large number of frames can produce decryption errors, even when no key cache update is being done. Performing a key search for every single frame in an A-MPDU improves reliability. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index fd4fdb57e570..c686987c4840 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -1817,6 +1817,10 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah) ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA; + /* enable key search for every frame in an aggregate */ + if (AR_SREV_9300_20_OR_LATER(ah)) + ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH; + pCap->low_2ghz_chan = 2312; pCap->high_2ghz_chan = 2732; diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h index 60826b82f4a2..f6058b439fb3 100644 --- a/drivers/net/wireless/ath/ath9k/reg.h +++ b/drivers/net/wireless/ath/ath9k/reg.h @@ -1568,6 +1568,7 @@ enum { #define AR_PCU_TBTT_PROTECT 0x00200000 #define AR_PCU_CLEAR_VMF 0x01000000 #define AR_PCU_CLEAR_BA_VALID 0x04000000 +#define AR_PCU_ALWAYS_PERFORM_KEYSEARCH 0x10000000 #define AR_PCU_BT_ANT_PREVENT_RX 0x00100000 #define AR_PCU_BT_ANT_PREVENT_RX_S 20