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net: skb_share_check() should use consume_skb()

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In order to avoid false drop_monitor indications, we should
call consume_skb() if skb_clone() was successful.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2012-08-03 20:54:15 +00:00 committed by David S. Miller
parent cc72d100a3
commit 47061bc440
1 changed files with 6 additions and 3 deletions
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9
include/linux/skbuff.h
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@ -846,13 +846,16 @@ static inline int skb_shared(const struct sk_buff *skb)
*
* NULL is returned on a memory allocation failure.
*/
static inline struct sk_buff *skb_share_check(struct sk_buff *skb,
gfp_t pri)
static inline struct sk_buff *skb_share_check(struct sk_buff *skb, gfp_t pri)
{
might_sleep_if(pri & __GFP_WAIT);
if (skb_shared(skb)) {
struct sk_buff *nskb = skb_clone(skb, pri);
kfree_skb(skb);
if (likely(nskb))
consume_skb(skb);
else
kfree_skb(skb);
skb = nskb;
}
return skb;