From e2f036da2f8f72894988670953a1141da785e4f5 Mon Sep 17 00:00:00 2001 From: Mattias Nissler Date: Sun, 7 Oct 2007 16:35:31 +0200 Subject: [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 Signed-off-by: John W. Linville --- net/mac80211/rx.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 4c046af237e..ece77766ea2 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) -- cgit v1.2.3