net/skbuff: Introduce skb_mac_offset()

amirv · davem330 · commit ea6da4fd388a · 2017-02-10T13:18:33.000-05:00
Introduce skb_mac_offset() that could be used to get mac header offset.

Signed-off-by: Amir Vadai &lt;amir@vadai.me&gt;
Reviewed-by: Or Gerlitz &lt;ogerlitz@mellanox.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
@@ -2184,6 +2184,11 @@ static inline unsigned char *skb_mac_header(const struct sk_buff *skb)
 	return skb->head + skb->mac_header;
 }
 
+static inline int skb_mac_offset(const struct sk_buff *skb)
+{
+	return skb_mac_header(skb) - skb->data;
+}
+
 static inline int skb_mac_header_was_set(const struct sk_buff *skb)
 {
 	return skb->mac_header != (typeof(skb->mac_header))~0U;

Original file line number	Diff line number	Diff line change
`@@ -2184,6 +2184,11 @@ static inline unsigned char skb_mac_header(const struct sk_buff skb)`
`2184`	`2184`	`return skb->head + skb->mac_header;`
`2185`	`2185`	`}`
`2186`	`2186`
	`2187`	`+static inline int skb_mac_offset(const struct sk_buff *skb)`
	`2188`	`+{`
	`2189`	`+ return skb_mac_header(skb) - skb->data;`
	`2190`	`+}`
	`2191`	`+`
`2187`	`2192`	`static inline int skb_mac_header_was_set(const struct sk_buff *skb)`
`2188`	`2193`	`{`
`2189`	`2194`	`return skb->mac_header != (typeof(skb->mac_header))~0U;`