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mac80211: fix initialization of skb->cb in ieee80211_subif_start_xmit

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commit 489ee9195a7de9e6bc833d639ff6b553ffdad90e upstream.

The change 'mac80211: Fix BUG in pskb_expand_head when transmitting shared skbs'
added a check for copying the skb if it's shared, however the tx info variable
still points at the cb of the old skb

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Felix Fietkau 2010-12-18 19:30:48 +01:00 committed by Greg Kroah-Hartman
parent 04e0f5f7ed
commit a0cac77b3e
1 changed files with 2 additions and 1 deletions
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3
net/mac80211/tx.c
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@ -1726,7 +1726,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_info *info;
int ret = NETDEV_TX_BUSY, head_need;
u16 ethertype, hdrlen, meshhdrlen = 0;
__le16 fc;
@ -2017,6 +2017,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
skb_set_network_header(skb, nh_pos);
skb_set_transport_header(skb, h_pos);
info = IEEE80211_SKB_CB(skb);
memset(info, 0, sizeof(*info));
dev->trans_start = jiffies;