On Sun, 2007-10-07 at 16:53 +0200, Michael Buesch wrote:
> On Sunday 07 October 2007 16:35:31 Mattias Nissler wrote:
> > + /* either the frame will be decrypted or dropped */
>
> I think this comment doesn't apply then anymore, eh?
Well, I changed the wording to "has been decrypted or will be dropped".
Mattias
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@xxxxxx>
---
net/mac80211/rx.c | 20 +++++++++++---------
1 files changed, 11 insertions(+), 9 deletions(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index de3f7ae..34699a1 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)
--
1.5.3
-
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