From: Tom Herbert <tom@herbertland.com>
Date: Mon, 14 Dec 2015 19:19:40 +0000 (-0800)
Subject: net: Add skb_inner_transport_offset function
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=55dc5a9f2f2afd32d7b1bda44a5fc95e67a3371f;p=openwrt%2Fstaging%2Fblogic.git

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 af4f6ac025b6..2393373c9d08 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1939,6 +1939,11 @@ static inline unsigned char *skb_inner_transport_header(const struct sk_buff
 	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;