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authorPatrick McHardy <kaber@trash.net>2007-04-05 18:54:02 -0400
committerDavid S. Miller <davem@davemloft.net>2007-04-05 18:54:02 -0400
commitc5027c9a896fbe05367fb893a274deca5114bfd0 (patch)
tree0deedc7c6e8edbd9e0dcc255a2f64bcc8c1ab1da /net/ipv4
parent4c4d51a7316b164ba08af61aa0c124a88bc60450 (diff)
[XFRM]: beet: fix IP option encapsulation
Beet mode calculates an incorrect value for the transport header location when IP options are present, resulting in encapsulation errors. The correct location is 4 or 8 bytes before the end of the original IP header, depending on whether the pseudo header is padded. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/xfrm4_mode_beet.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/net/ipv4/xfrm4_mode_beet.c b/net/ipv4/xfrm4_mode_beet.c
index 89cf59ea7bbe..16efc66a7c3f 100644
--- a/net/ipv4/xfrm4_mode_beet.c
+++ b/net/ipv4/xfrm4_mode_beet.c
@@ -42,10 +42,9 @@ static int xfrm4_beet_output(struct xfrm_state *x, struct sk_buff *skb)
42 42
43 skb->nh.raw = skb_push(skb, x->props.header_len + hdrlen); 43 skb->nh.raw = skb_push(skb, x->props.header_len + hdrlen);
44 top_iph = skb->nh.iph; 44 top_iph = skb->nh.iph;
45 hdrlen = iph->ihl * 4 - optlen; 45 skb->h.raw += sizeof(*iph) - hdrlen;
46 skb->h.raw += hdrlen;
47 46
48 memmove(top_iph, iph, hdrlen); 47 memmove(top_iph, iph, sizeof(*iph));
49 if (unlikely(optlen)) { 48 if (unlikely(optlen)) {
50 struct ip_beet_phdr *ph; 49 struct ip_beet_phdr *ph;
51 50