[IPSEC]: Fix IPv6 AH calculation in outbound

Signed-off-by: Kazunori MIYAZAWA <miyazawa@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>

[IPSEC]: Fix IPv6 AH calculation in outbound
Signed-off-by: Kazunori MIYAZAWA <miyazawa@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
144466bd · Kazunori MIYAZAWA · David S. Miller · aad0e0b9 · 144466bd
Commit 144466bd authored May 25, 2007 by Kazunori MIYAZAWA Committed by David S. Miller May 31, 2007
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net/ipv6/ah6.c net/ipv6/ah6.c +1 -1

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--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -247,7 +247,7 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
 	memcpy(tmp_base, top_iph, sizeof(tmp_base));

 	tmp_ext = NULL;
-	extlen = skb_transport_offset(skb) + sizeof(struct ipv6hdr);
+	extlen = skb_transport_offset(skb) - sizeof(struct ipv6hdr);
 	if (extlen) {
 		extlen += sizeof(*tmp_ext);
 		tmp_ext = kmalloc(extlen, GFP_ATOMIC);