[SK_BUFF]: Introduce skb_transport_offset()
For the quite common 'skb->h.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 7c1f175..64c3c16 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -962,6 +962,11 @@
skb->h.raw = skb->data;
}
+static inline int skb_transport_offset(const struct sk_buff *skb)
+{
+ return skb->h.raw - skb->data;
+}
+
static inline unsigned char *skb_network_header(const struct sk_buff *skb)
{
return skb->nh.raw;