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ipv4: add a sock pointer to ip_queue_xmit()

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ip_queue_xmit() assumes the skb it has to transmit is attached to an
inet socket. Commit 31c70d5956 ("l2tp: keep original skb ownership")
changed l2tp to not change skb ownership and thus broke this assumption.

One fix is to add a new 'struct sock *sk' parameter to ip_queue_xmit(),
so that we do not assume skb->sk points to the socket used by l2tp
tunnel.

Fixes: 31c70d5956 ("l2tp: keep original skb ownership")
Reported-by: Zhan Jianyu <nasa4836@gmail.com>
Tested-by: Zhan Jianyu <nasa4836@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2014-04-15 12:58:34 -04:00
committed by David S. Miller
parent 1dd333f470
commit b0270e9101
10 changed files with 13 additions and 13 deletions
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2
net/l2tp/l2tp_ip.c
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@@ -487,7 +487,7 @@ static int l2tp_ip_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m
xmit:
/* Queue the packet to IP for output */
rc = ip_queue_xmit(skb, &inet->cork.fl);
rc = ip_queue_xmit(sk, skb, &inet->cork.fl);
rcu_read_unlock();
error: