From 02d2ebb2a0aa2cae0446289c8f927067aec06079 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 22 Nov 2010 15:39:39 +0100 Subject: [PATCH] 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 --- drivers/net/wireless/ath/ath9k/hw.c | 4 ++++ drivers/net/wireless/ath/ath9k/reg.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index fd4fdb5..c686987 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 60826b8..f6058b4 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 -- 2.7.4