path: root/net/mac80211/key.h
diff options
authorJouni Malinen <jouni.malinen@atheros.com>2010-06-11 10:27:33 -0700
committerJohn W. Linville <linville@tuxdriver.com>2010-06-15 16:00:49 -0400
commit9190252c952a33efa1ceff4ef35188f8a27b81cb (patch)
treef6c7473c919e7a3f0ff7c1b6543da44f8c338d02 /net/mac80211/key.h
parent05e48e8e437148298f4673e1efe81f9ead5f41d7 (diff)
mac80211: Use a separate CCMP PN receive counter for management frames
When management frame protection (IEEE 802.11w) is used, we must use a separate counter for tracking received CCMP packet number for the management frames. The previously used NUM_RX_DATA_QUEUESth queue was shared with data frames when QoS was not used and that can cause problems in detecting replays incorrectly for robust management frames. Add a new counter just for robust management frames to avoid this issue. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/key.h')
1 files changed, 7 insertions, 1 deletions
diff --git a/net/mac80211/key.h b/net/mac80211/key.h
index 9996e3be6e63..a3849fa3fce8 100644
--- a/net/mac80211/key.h
+++ b/net/mac80211/key.h
@@ -77,7 +77,13 @@ struct ieee80211_key {
} tkip;
struct {
u8 tx_pn[6];
- u8 rx_pn[NUM_RX_DATA_QUEUES][6];
+ /*
+ * Last received packet number. The first
+ * NUM_RX_DATA_QUEUES counters are used with Data
+ * frames and the last counter is used with Robust
+ * Management frames.
+ */
+ u8 rx_pn[NUM_RX_DATA_QUEUES + 1][6];
struct crypto_cipher *tfm;
u32 replays; /* dot11RSNAStatsCCMPReplays */
/* scratch buffers for virt_to_page() (crypto API) */