[SK_BUFF]: Introduce skb_network_header()

For the places where we need a pointer to the network header, it is still legal
to touch skb->nh.raw directly if just adding to, subtracting from or setting it
to another layer header.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/xfrm4_mode_transport.c b/net/ipv4/xfrm4_mode_transport.c
index a820dde2c862..b198087c073e 100644
--- a/net/ipv4/xfrm4_mode_transport.c
+++ b/net/ipv4/xfrm4_mode_transport.c
@@ -34,7 +34,7 @@ static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb)
 
         skb_push(skb, x->props.header_len);
         skb_reset_network_header(skb);
-        memmove(skb->nh.raw, iph, ihl);
+        memmove(skb_network_header(skb), iph, ihl);
         return 0;
 }
 
@@ -51,7 +51,7 @@ static int xfrm4_transport_input(struct xfrm_state *x, struct sk_buff *skb)
         int ihl = skb->data - skb->h.raw;
 
         if (skb->h.raw != skb->nh.raw) {
-                memmove(skb->h.raw, skb->nh.raw, ihl);
+                memmove(skb->h.raw, skb_network_header(skb), ihl);
                 skb->nh.raw = skb->h.raw;
         }
         skb->nh.iph->tot_len = htons(skb->len + ihl);