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authorMattias Nissler <mattias.nissler@gmx.de>2007-10-07 16:35:31 +0200
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:55:23 -0700
commite2f036da2f8f72894988670953a1141da785e4f5 (patch)
tree94970130c987b71eb63f323b602447c99fe57ccc /net/mac80211/rx.c
parent0654ff055c6ce5642eed88ba22915b0e56666794 (diff)
[PATCH] mac80211: Defer setting of RX_FLAG_DECRYPTED.
The decryption handlers will skip the frame if the RX_FLAG_DECRYPTED flag is set, so the early flag setting introduced by Johannes breaks decryption. To work around this, call the handlers first and then set the flag. Signed-off-by: Mattias Nissler <mattias.nissler@gmx.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/rx.c')
-rw-r--r--net/mac80211/rx.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 4c046af237e3..ece77766ea2b 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -424,6 +424,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx)
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
int keyidx;
int hdrlen;
+ ieee80211_txrx_result result = TXRX_DROP;
struct ieee80211_key *stakey = NULL;
/*
@@ -522,21 +523,22 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx)
ieee80211_wep_is_weak_iv(rx->skb, rx->key))
rx->sta->wep_weak_iv_count++;
- /* either the frame will be decrypted or dropped */
- rx->u.rx.status->flag |= RX_FLAG_DECRYPTED;
-
switch (rx->key->conf.alg) {
case ALG_WEP:
- return ieee80211_crypto_wep_decrypt(rx);
+ result = ieee80211_crypto_wep_decrypt(rx);
+ break;
case ALG_TKIP:
- return ieee80211_crypto_tkip_decrypt(rx);
+ result = ieee80211_crypto_tkip_decrypt(rx);
+ break;
case ALG_CCMP:
- return ieee80211_crypto_ccmp_decrypt(rx);
+ result = ieee80211_crypto_ccmp_decrypt(rx);
+ break;
}
- /* not reached */
- WARN_ON(1);
- return TXRX_DROP;
+ /* either the frame has been decrypted or will be dropped */
+ rx->u.rx.status->flag |= RX_FLAG_DECRYPTED;
+
+ return result;
}
static void ap_sta_ps_start(struct net_device *dev, struct sta_info *sta)