net: Add dummy dst_ops->redirect method where needed.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index b5594cc..e9c4e2e 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -118,6 +118,7 @@
 static struct dst_entry *dn_dst_negative_advice(struct dst_entry *);
 static void dn_dst_link_failure(struct sk_buff *);
 static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu);
+static void dn_dst_redirect(struct dst_entry *dst, struct sk_buff *skb);
 static struct neighbour *dn_dst_neigh_lookup(const struct dst_entry *dst,
 					     struct sk_buff *skb,
 					     const void *daddr);
@@ -145,6 +146,7 @@
 	.negative_advice =	dn_dst_negative_advice,
 	.link_failure =		dn_dst_link_failure,
 	.update_pmtu =		dn_dst_update_pmtu,
+	.redirect =		dn_dst_redirect,
 	.neigh_lookup =		dn_dst_neigh_lookup,
 };
 
@@ -292,6 +294,10 @@
 	}
 }
 
+static void dn_dst_redirect(struct dst_entry *dst, struct sk_buff *skb)
+{
+}
+
 /*
  * When a route has been marked obsolete. (e.g. routing cache flush)
  */