[SK_BUFF]: Introduce skb_network_offset()

For the quite common 'skb->nh.raw - skb->data' sequence.

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/ax25/ax25_out.c b/net/ax25/ax25_out.c
index 6e08dc8dee40..02dea851a11a 100644
--- a/net/ax25/ax25_out.c
+++ b/net/ax25/ax25_out.c
@@ -148,7 +148,7 @@ void ax25_output(ax25_cb *ax25, int paclen, struct sk_buff *skb)
 
                         if (ka9qfrag == 1) {
                                 skb_reserve(skbn, frontlen + 2);
-                                skbn->nh.raw = skbn->data + (skb->nh.raw - skb->data);
+                                skbn->nh.raw = skbn->data + skb_network_offset(skb);
                                 memcpy(skb_put(skbn, len), skb->data, len);
                                 p = skb_push(skbn, 2);
 
@@ -161,7 +161,7 @@ void ax25_output(ax25_cb *ax25, int paclen, struct sk_buff *skb)
                                 }
                         } else {
                                 skb_reserve(skbn, frontlen + 1);
-                                skbn->nh.raw = skbn->data + (skb->nh.raw - skb->data);
+                                skbn->nh.raw = skbn->data + skb_network_offset(skb);
                                 memcpy(skb_put(skbn, len), skb->data, len);
                                 p = skb_push(skbn, 1);
                                 *p = AX25_P_TEXT;