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ipv6: xfrm: dereference inner ipv6 header if encapsulated

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In xfrm6_local_error use inner_header if the packet was encapsulated.

Cc: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Hannes Frederic Sowa 2013-08-18 13:46:57 +02:00 committed by Steffen Klassert
parent 3d483058c8
commit 5d0ff542d0
1 changed files with 3 additions and 1 deletions
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4
net/ipv6/xfrm6_output.c
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@ -59,10 +59,12 @@ static void xfrm6_local_rxpmtu(struct sk_buff *skb, u32 mtu)
void xfrm6_local_error(struct sk_buff *skb, u32 mtu) void xfrm6_local_error(struct sk_buff *skb, u32 mtu)
{ {
struct flowi6 fl6; struct flowi6 fl6;
const struct ipv6hdr *hdr;
struct sock *sk = skb->sk; struct sock *sk = skb->sk;
hdr = skb->encapsulation ? inner_ipv6_hdr(skb) : ipv6_hdr(skb);
fl6.fl6_dport = inet_sk(sk)->inet_dport; fl6.fl6_dport = inet_sk(sk)->inet_dport;
fl6.daddr = ipv6_hdr(skb)->daddr; fl6.daddr = hdr->daddr;
ipv6_local_error(sk, EMSGSIZE, &fl6, mtu); ipv6_local_error(sk, EMSGSIZE, &fl6, mtu);
} }