diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2008-10-14 23:57:43 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-10-14 21:12:39 -0400 |
| commit | 8713a7ccd88d93d9f8a72436088d6627c82490db (patch) | |
| tree | 9cca393d207ed193e28d7cf40da706b88c571bf4 | |
| parent | eaca90dab6ab9853223029deffdd226f41b2028c (diff) | |
rt2x00: fix regression introduced by "mac80211: free up 2 bytes in skb->cb"
The hw_key pointer is used (and obviously NULL) after skb->cb is
memset to 0. This patch grabs the iv_len before the memset call.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Stephen Blackheath <tramp.enshrine.stephen@blacksapphire.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00queue.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c index 1676ac48479..451d410ecda 100644 --- a/drivers/net/wireless/rt2x00/rt2x00queue.c +++ b/drivers/net/wireless/rt2x00/rt2x00queue.c @@ -374,7 +374,7 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb) struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX); struct txentry_desc txdesc; struct skb_frame_desc *skbdesc; - unsigned int iv_len; + unsigned int iv_len = 0; if (unlikely(rt2x00queue_full(queue))) return -EINVAL; @@ -395,6 +395,9 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb) entry->skb = skb; rt2x00queue_create_tx_descriptor(entry, &txdesc); + if (IEEE80211_SKB_CB(skb)->control.hw_key != NULL) + iv_len = IEEE80211_SKB_CB(skb)->control.hw_key->iv_len; + /* * All information is retreived from the skb->cb array, * now we should claim ownership of the driver part of that @@ -410,9 +413,7 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb) * the frame so we can provide it to the driver seperately. */ if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc.flags) && - !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc.flags) && - (IEEE80211_SKB_CB(skb)->control.hw_key != NULL)) { - iv_len = IEEE80211_SKB_CB(skb)->control.hw_key->iv_len; + !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc.flags)) { rt2x00crypto_tx_remove_iv(skb, iv_len); } |