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| author | Jouni Malinen <jouni.malinen@atheros.com> | 2010-06-11 19:27:33 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-06-15 22:00:49 +0200 |
| commit | 9190252c952a33efa1ceff4ef35188f8a27b81cb (patch) | |
| tree | f6c7473c919e7a3f0ff7c1b6543da44f8c338d02 /net/mac80211/key.h | |
| parent | mac80211: Protect Deauthentication frame when using MFP (diff) | |
| download | linux-9190252c952a33efa1ceff4ef35188f8a27b81cb.tar.xz linux-9190252c952a33efa1ceff4ef35188f8a27b81cb.zip | |
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')
| -rw-r--r-- | net/mac80211/key.h | 8 |
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) */ |