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authorJohannes Berg <johannes@sipsolutions.net>2007-09-26 15:19:45 +0200
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:53:16 -0700
commit50741ae05a4742cae99361f57d84b5f8d33822a4 (patch)
treee655586b7d22a9504aaad7aa79401e8ff1c71770 /net/mac80211/wpa.c
parentfb1c1cd6c5a8988b14c5c6c0dfe55542df3a34c6 (diff)
[PATCH] mac80211: fix TKIP IV update
The TKIP IV should be updated only after MMIC verification, this patch changes it to be at that spot. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/wpa.c')
-rw-r--r--net/mac80211/wpa.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index a07fd7484cd..6695efba57e 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -175,6 +175,10 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
/* remove Michael MIC from payload */
skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
+ /* update IV in key information to be able to detect replays */
+ rx->key->u.tkip.iv32_rx[rx->u.rx.queue] = rx->u.rx.tkip_iv32;
+ rx->key->u.tkip.iv16_rx[rx->u.rx.queue] = rx->u.rx.tkip_iv16;
+
return TXRX_CONTINUE;
}
@@ -315,7 +319,9 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx)
res = ieee80211_tkip_decrypt_data(rx->local->wep_rx_tfm,
key, skb->data + hdrlen,
skb->len - hdrlen, rx->sta->addr,
- hwaccel, rx->u.rx.queue);
+ hwaccel, rx->u.rx.queue,
+ &rx->u.rx.tkip_iv32,
+ &rx->u.rx.tkip_iv16);
if (res != TKIP_DECRYPT_OK || wpa_test) {
printk(KERN_DEBUG "%s: TKIP decrypt failed for RX frame from "
"%s (res=%d)\n",