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net: skb_orphan() changes

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It is illegal to set skb->sk without corresponding destructor.

Its therefore safe for skb_orphan() to not clear skb->sk if
skb->destructor is not set.

Also avoid clearing skb->destructor if already NULL.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2013-07-30 16:11:15 -07:00 committed by David S. Miller
parent f2f872f927
commit c34a761231
1 changed files with 4 additions and 3 deletions
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7
include/linux/skbuff.h
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@ -1805,10 +1805,11 @@ static inline void pskb_trim_unique(struct sk_buff *skb, unsigned int len)
*/
static inline void skb_orphan(struct sk_buff *skb)
{
if (skb->destructor)
if (skb->destructor) {
skb->destructor(skb);
skb->destructor = NULL;
skb->sk = NULL;
skb->destructor = NULL;
skb->sk = NULL;
}
}
/**