1 files changed, 9 insertions, 2 deletions

diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index a0d8392491c3..a154d0a08c79 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -269,7 +269,11 @@ static void ah_input_done(struct crypto_async_request *base, int err)
         skb->network_header += ah_hlen;
         memcpy(skb_network_header(skb), work_iph, ihl);
         __skb_pull(skb, ah_hlen + ihl);
-        skb_set_transport_header(skb, -ihl);
+
+        if (x->props.mode == XFRM_MODE_TUNNEL)
+                skb_reset_transport_header(skb);
+        else
+                skb_set_transport_header(skb, -ihl);
 out:
         kfree(AH_SKB_CB(skb)->tmp);
         xfrm_input_resume(skb, err);
@@ -381,7 +385,10 @@ static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
         skb->network_header += ah_hlen;
         memcpy(skb_network_header(skb), work_iph, ihl);
         __skb_pull(skb, ah_hlen + ihl);
-        skb_set_transport_header(skb, -ihl);
+        if (x->props.mode == XFRM_MODE_TUNNEL)
+                skb_reset_transport_header(skb);
+        else
+                skb_set_transport_header(skb, -ihl);
 
         err = nexthdr;