net: Add skb_inner_transport_offset function
Same thing as skb_transport_offset but returns the offset of the inner
transport header (when skb->encpasulation is set).
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index af4f6ac..2393373 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1939,6 +1939,11 @@
return skb->head + skb->inner_transport_header;
}
+static inline int skb_inner_transport_offset(const struct sk_buff *skb)
+{
+ return skb_inner_transport_header(skb) - skb->data;
+}
+
static inline void skb_reset_inner_transport_header(struct sk_buff *skb)
{
skb->inner_transport_header = skb->data - skb->head;