net: add netdev_free_skb()

For the moment this is just dev_kfree_skb_any().  But it will do
something later.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 include/linux/skbuff.h |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1406,6 +1406,16 @@ static inline void netdev_free_page(stru
 }
 
 /**
+ *	netdev_free_skb - free an skbuff allocated with netdev_alloc_skb
+ *	@dev: the device used for netdev_alloc_skb
+ *	@skb: the skbuff returned from netdev_alloc_skb
+ */
+static inline void netdev_free_skb(struct net_device *dev, struct sk_buff *skb)
+{
+	dev_kfree_skb_any(skb);
+}
+
+/**
  *	skb_clone_writable - is the header of a clone writable
  *	@skb: buffer to check
  *	@len: length up to which to write
