[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, 3 insertions, 3 deletions

diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c
index 33a1b9200431..5c929f886129 100644
--- a/net/ipv6/xfrm6_input.c
+++ b/net/ipv6/xfrm6_input.c
@@ -28,7 +28,7 @@ int xfrm6_rcv_spi(struct sk_buff *skb, __be32 spi)
         unsigned int nhoff;
 
         nhoff = IP6CB(skb)->nhoff;
-        nexthdr = skb->nh.raw[nhoff];
+        nexthdr = skb_network_header(skb)[nhoff];
 
         seq = 0;
         if (!spi && (err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) != 0)
@@ -58,7 +58,7 @@ int xfrm6_rcv_spi(struct sk_buff *skb, __be32 spi)
                 if (nexthdr <= 0)
                         goto drop_unlock;
 
-                skb->nh.raw[nhoff] = nexthdr;
+                skb_network_header(skb)[nhoff] = nexthdr;
 
                 if (x->props.replay_window)
                         xfrm_replay_advance(x, seq);
@@ -113,7 +113,7 @@ int xfrm6_rcv_spi(struct sk_buff *skb, __be32 spi)
         } else {
 #ifdef CONFIG_NETFILTER
                 skb->nh.ipv6h->payload_len = htons(skb->len);
-                __skb_push(skb, skb->data - skb->nh.raw);
+                __skb_push(skb, skb->data - skb_network_header(skb));
 
                 NF_HOOK(PF_INET6, NF_IP6_PRE_ROUTING, skb, skb->dev, NULL,
                         ip6_rcv_finish);