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Commit 4d78b6c7 authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller
Browse files

[IPSEC]: COW skb header in UDP decap 



The following patch just makes the header part of the skb writeable.
This is needed since we modify the IP headers just a few lines below.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c7f905f0

net/ipv4/udp.c

+2 −0
Original line number Diff line number Diff line
@@ -955,6 +955,8 @@ static int udp_encap_rcv(struct sock * sk, struct sk_buff *skb) 
	 * header and optional ESP marker bytes) and then modify the

	 * protocol to ESP, and then call into the transform receiver.

	 */

	if (skb_cloned(skb) && pskb_expand_head(skb, 0, 0, GFP_ATOMIC))

		return 0;



	/* Now we can update and verify the packet length... */

	iph = skb->nh.iph;