[SK_BUFF]: Introduce skb_network_header()
For the places where we need a pointer to the network header, it is still legal
to touch skb->nh.raw directly if just adding to, subtracting from or setting it
to another layer header.
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h
index 7044f8a..29d6579 100644
--- a/include/linux/if_pppox.h
+++ b/include/linux/if_pppox.h
@@ -116,7 +116,7 @@
static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb)
{
- return (struct pppoe_hdr *)skb->nh.raw;
+ return (struct pppoe_hdr *)skb_network_header(skb);
}
struct pppoe_opt {
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 47cc8b0..76d30f3 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -960,6 +960,11 @@
skb->tail += len;
}
+static inline unsigned char *skb_network_header(const struct sk_buff *skb)
+{
+ return skb->nh.raw;
+}
+
static inline void skb_reset_network_header(struct sk_buff *skb)
{
skb->nh.raw = skb->data;
