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authorSteffen Klassert <steffen.klassert@secunet.com>2010-06-04 01:57:38 +0000
committerDavid S. Miller <davem@davemloft.net>2010-06-04 15:56:00 -0700
commit8764ab2ca7ab5055e1ca80f9cfa4970c34acb804 (patch)
treeca0a6ea6c6fabbb98220f5b700981f7f23855f42 /include
parent4f4aeb7fd0f7e6ca008bb2147ba36cee13876595 (diff)
downloadlinux-8764ab2ca7ab5055e1ca80f9cfa4970c34acb804.tar.bz2
net: check for refcount if pop a stacked dst_entry
xfrm triggers a warning if dst_pop() drops a refcount on a noref dst. This patch changes dst_pop() to skb_dst_pop(). skb_dst_pop() drops the refcnt only on a refcounted dst. Also we don't clone the child dst_entry, so it is not refcounted and we can use skb_dst_set_noref() in xfrm_output_one(). Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/dst.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/net/dst.h b/include/net/dst.h
index 612069beda73..81d1413a8701 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -250,11 +250,11 @@ static inline void skb_tunnel_rx(struct sk_buff *skb, struct net_device *dev)
* Linux networking. Thus, destinations are stackable.
*/
-static inline struct dst_entry *dst_pop(struct dst_entry *dst)
+static inline struct dst_entry *skb_dst_pop(struct sk_buff *skb)
{
- struct dst_entry *child = dst_clone(dst->child);
+ struct dst_entry *child = skb_dst(skb)->child;
- dst_release(dst);
+ skb_dst_drop(skb);
return child;
}