net: Add ->neigh_lookup() operation to dst_ops

In the future dst entries will be neigh-less.  In that environment we
need to have an easy transition point for current users of
dst->neighbour outside of the packet output fast path.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/net/dst_ops.h b/include/net/dst_ops.h
index dc0746328947..9adb99845a56 100644
--- a/include/net/dst_ops.h
+++ b/include/net/dst_ops.h
@@ -26,6 +26,7 @@ struct dst_ops {
         void                    (*link_failure)(struct sk_buff *);
         void                    (*update_pmtu)(struct dst_entry *dst, u32 mtu);
         int                     (*local_out)(struct sk_buff *skb);
+        struct neighbour *      (*neigh_lookup)(const struct dst_entry *dst, const void *daddr);
 
         struct kmem_cache       *kmem_cachep;