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authorJohannes Berg <johannes.berg@intel.com>2011-07-06 22:00:35 +0200
committerJohn W. Linville <linville@tuxdriver.com>2011-07-08 11:11:20 -0400
commit75396ae6d433b49482e377e6f8dbf1f42ad53f3a (patch)
tree07fb506f08f3cca7d67d2fd365cc059240b6957b /net/mac80211/key.h
parentaba83a0b301c32dbb91c017f33307611e1a1d384 (diff)
downloadlinux-stericsson-75396ae6d433b49482e377e6f8dbf1f42ad53f3a.tar.gz
mac80211: fix CMAC races
Just like TKIP and CCMP, CMAC has the PN race. It might not actually be possible to hit it now since there aren't multiple ACs for management frames, but fix it anyway. Also move scratch buffers onto the stack. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/key.h')
-rw-r--r--net/mac80211/key.h5
1 files changed, 1 insertions, 4 deletions
diff --git a/net/mac80211/key.h b/net/mac80211/key.h
index 05ce4c0203fc..fcb52eb2f92f 100644
--- a/net/mac80211/key.h
+++ b/net/mac80211/key.h
@@ -97,14 +97,11 @@ struct ieee80211_key {
#endif
} ccmp;
struct {
- u8 tx_pn[6];
+ atomic64_t tx_pn;
u8 rx_pn[6];
struct crypto_cipher *tfm;
u32 replays; /* dot11RSNAStatsCMACReplays */
u32 icverrors; /* dot11RSNAStatsCMACICVErrors */
- /* scratch buffers for virt_to_page() (crypto API) */
- u8 tx_crypto_buf[2 * AES_BLOCK_LEN];
- u8 rx_crypto_buf[2 * AES_BLOCK_LEN];
} aes_cmac;
} u;