From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20120217005535.079957995@linuxfoundation.org> Date: Thu, 16 Feb 2012 16:55:42 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Felix Fietkau , Laurent Bonnans , Jurica Vukadin , "John W. Linville" Subject: [08/28] ath9k: fix a WEP crypto related regression In-Reply-To: <20120217005609.GA17081@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Felix Fietkau 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 Reported-by: Laurent Bonnans Reported-by: Jurica Vukadin Signed-off-by: John W. Linville Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/ath/ath9k/recv.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- 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_c (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; /*