[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_beet.c b/net/ipv4/xfrm4_mode_beet.c
index eaaf3565f3b2..505fca034a1f 100644
--- a/net/ipv4/xfrm4_mode_beet.c
+++ b/net/ipv4/xfrm4_mode_beet.c
@@ -98,7 +98,7 @@ static int xfrm4_beet_input(struct xfrm_state *x, struct sk_buff *skb)
         }
 
         skb->nh.raw = skb->data + (phlen - sizeof(*iph));
-        memmove(skb->nh.raw, iph, sizeof(*iph));
+        memmove(skb_network_header(skb), iph, sizeof(*iph));
         skb->h.raw = skb->data + (phlen + optlen);
         skb->data = skb->h.raw;
 
@@ -112,7 +112,7 @@ static int xfrm4_beet_input(struct xfrm_state *x, struct sk_buff *skb)
         else
                 iph->protocol = protocol;
         iph->check = 0;
-        iph->check = ip_fast_csum(skb->nh.raw, iph->ihl);
+        iph->check = ip_fast_csum(skb_network_header(skb), iph->ihl);
         err = 0;
 out:
         return err;