mirror_ubuntu-kernels/drivers/net/wireless/ath
Lorenzo Bianconi e1352fde56 ath9k: fix decrypt_error initialization in ath_rx_tasklet()
ath_rx_tasklet() calls ath9k_rx_skb_preprocess() and ath9k_rx_skb_postprocess()
in a loop over the received frames. The decrypt_error flag is
initialized to false
just outside ath_rx_tasklet() loop. ath9k_rx_accept(), called by
ath9k_rx_skb_preprocess(),
only sets decrypt_error to true and never to false.
Then ath_rx_tasklet() calls ath9k_rx_skb_postprocess() and passes
decrypt_error to it.
So, after a decryption error, in ath9k_rx_skb_postprocess(), we can
have a leftover value
from another processed frame. In that case, the frame will not be marked with
RX_FLAG_DECRYPTED even if it is decrypted correctly.
When using CCMP encryption this issue can lead to connection stuck
because of CCMP
PN corruption and a waste of CPU time since mac80211 tries to decrypt an already
deciphered frame with ieee80211_aes_ccm_decrypt.
Fix the issue initializing decrypt_error flag at the begging of the
ath_rx_tasklet() loop.

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-13 15:17:24 -04:00
..
ath5k ath5k: fix txop limit handling 2012-07-17 15:11:37 -04:00
ath6kl nl80211: move scan API to wdev 2012-07-12 12:10:41 +02:00
ath9k ath9k: fix decrypt_error initialization in ath_rx_tasklet() 2012-08-13 15:17:24 -04:00
carl9170 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2012-07-12 13:44:50 -04:00
ath.h ath: Add Wake-on-Wireless debug mask 2012-07-12 15:27:16 -04:00
debug.c drivers/net: Add export.h to files using EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:08 -04:00
hw.c drivers/net: Add export.h to files using EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:08 -04:00
Kconfig Merge branch 'for-linus' of git://github.com/richardweinberger/linux 2011-11-02 09:45:39 -07:00
key.c ath9k: fix dynamic WEP related regression 2012-06-25 15:14:13 -04:00
main.c ath: Add and use pr_fmt, convert printks to pr_<level> 2012-04-10 14:52:13 -04:00
Makefile atheros: force endian checks on atheros wireless drivers 2011-12-21 15:06:12 -05:00
reg.h
regd_common.h ath: fix spelling of Grenada 2011-08-08 16:04:13 -04:00
regd.c ath: Add and use pr_fmt, convert printks to pr_<level> 2012-04-10 14:52:13 -04:00
regd.h ath: fix spelling of Grenada 2011-08-08 16:04:13 -04:00