net: add confirm_neigh method to dst_ops
Add confirm_neigh method to dst_ops and use it from IPv4 and IPv6
to lookup and confirm the neighbour. Its usage via the new helper
dst_confirm_neigh() should be restricted to MSG_PROBE users for
performance reasons.
For XFRM prefer the last tunnel address, if present. With help
from Steffen Klassert.
Signed-off-by: Julian Anastasov <[email protected]>
Acked-by: Steffen Klassert <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/include/net/dst.h b/include/net/dst.h
index 6835d22..3a3b34b 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -477,6 +477,13 @@ static inline struct neighbour *dst_neigh_lookup_skb(const struct dst_entry *dst
return IS_ERR(n) ? NULL : n;
}
+static inline void dst_confirm_neigh(const struct dst_entry *dst,
+ const void *daddr)
+{
+ if (dst->ops->confirm_neigh)
+ dst->ops->confirm_neigh(dst, daddr);
+}
+
static inline void dst_link_failure(struct sk_buff *skb)
{
struct dst_entry *dst = skb_dst(skb);
