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authorSenthil Balasubramanian <senthilb@qca.qualcomm.com>2011-07-12 00:02:56 +0530
committerGreg Kroah-Hartman <gregkh@suse.de>2011-08-04 21:58:33 -0700
commit79db0af8b41b543e1fa684a4eb5949663aa52ae4 (patch)
tree0f648a6f58cda96eff27c49f075e0bd40bd73ec7 /drivers/net/wireless/ath
parent2124ddf8032f814b4bc6e785f152a4db7baaff3b (diff)
ath9k_hw: Fix incorrect key_miss handling
commit 0472ade031b5c0c69c21cf96acf64c50eb9ba3c2 upstream. Decryping frames on key_miss handling shouldn't be done for Michael MIC failed frames as h/w would have already decrypted such frames successfully anyway. Also leaving CRC and PHY error(where the frame is going to be dropped anyway), we are left to prcoess Decrypt error for which s/w decrypt is selected anway and so having key_miss as a separate check doesn't serve anything. So making key_miss handling mutually exlusive with other RX status handling makes much more sense. This patch addresses an issue with STA not reporting MIC failure events resulting in STA being disconnected immediately. Signed-off-by: Senthil Balasubramanian <senthilb@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/net/wireless/ath')
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_mac.c3
-rw-r--r--drivers/net/wireless/ath/ath9k/mac.c3
2 files changed, 2 insertions, 4 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index 10d71f7d3fc..1f992497186 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -629,8 +629,7 @@ int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
rxs->rs_status |= ATH9K_RXERR_DECRYPT;
else if (rxsp->status11 & AR_MichaelErr)
rxs->rs_status |= ATH9K_RXERR_MIC;
-
- if (rxsp->status11 & AR_KeyMiss)
+ else if (rxsp->status11 & AR_KeyMiss)
rxs->rs_status |= ATH9K_RXERR_DECRYPT;
}
diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c
index c2091f1f409..b6b523a897e 100644
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -645,8 +645,7 @@ int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
rs->rs_status |= ATH9K_RXERR_DECRYPT;
else if (ads.ds_rxstatus8 & AR_MichaelErr)
rs->rs_status |= ATH9K_RXERR_MIC;
-
- if (ads.ds_rxstatus8 & AR_KeyMiss)
+ else if (ads.ds_rxstatus8 & AR_KeyMiss)
rs->rs_status |= ATH9K_RXERR_DECRYPT;
}