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authorFelix Fietkau <nbd@openwrt.org>2012-02-05 21:15:17 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-02-20 12:46:14 -0800
commit07c07e52693740326b24511ba6053f3fd52c0942 (patch)
tree6612410e58bddc4cc49bad33f4022d59af5967e3
parent801cb74a250edad565024f2db5c5a6c7930ecbb1 (diff)
ath9k: fix a WEP crypto related regression
commit f88373fa47f3ce6590fdfaa742d0ddacc2ae017f upstream. commit b4a82a0 "ath9k_hw: fix interpretation of the rx KeyMiss flag" fixed the interpretation of the KeyMiss flag for keycache based lookups, however WEP encryption uses a static index, so KeyMiss is always asserted for it, even though frames are decrypted properly. Fix this by clearing the ATH9K_RXERR_KEYMISS flag if no keycache based lookup was performed. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Reported-by: Laurent Bonnans <bonnans.l@gmail.com> Reported-by: Jurica Vukadin <u.ra604@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/net/wireless/ath/ath9k/recv.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 67b862cdae6d..2f3aeac0d37e 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -824,6 +824,14 @@ static bool ath9k_rx_accept(struct ath_common *common,
(ATH9K_RXERR_DECRYPT | ATH9K_RXERR_CRC | ATH9K_RXERR_MIC |
ATH9K_RXERR_KEYMISS));
+ /*
+ * Key miss events are only relevant for pairwise keys where the
+ * descriptor does contain a valid key index. This has been observed
+ * mostly with CCMP encryption.
+ */
+ if (rx_stats->rs_keyix == ATH9K_RXKEYIX_INVALID)
+ rx_stats->rs_status &= ~ATH9K_RXERR_KEYMISS;
+
if (!rx_stats->rs_datalen)
return false;
/*