[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>
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 6440c78..47cc8b0 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -965,6 +965,11 @@
skb->nh.raw = skb->data;
}
+static inline int skb_network_offset(const struct sk_buff *skb)
+{
+ return skb->nh.raw - skb->data;
+}
+
static inline unsigned char *skb_mac_header(const struct sk_buff *skb)
{
return skb->mac.raw;