net: Do delayed neigh confirmation.

When a dst_confirm() happens, mark the confirmation as pending in the
dst.  Then on the next packet out, when we have the neigh in-hand, do
the update.

This removes the dependency in dst_confirm() of dst's having an
attached neigh.

While we're here, remove the explicit 'dst' NULL check, all except 2
or 3 call sites ensure it's not NULL.  So just fix those cases up.

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

1 files changed, 0 insertions, 15 deletions

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index e1d18bdeebb8..344d8988842a 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -309,12 +309,6 @@ static inline struct neighbour * neigh_clone(struct neighbour *neigh)
 
 #define neigh_hold(n)   atomic_inc(&(n)->refcnt)
 
-static inline void neigh_confirm(struct neighbour *neigh)
-{
-        if (neigh)
-                neigh->confirmed = jiffies;
-}
-
 static inline int neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
 {
         unsigned long now = jiffies;
@@ -358,15 +352,6 @@ static inline int neigh_hh_output(struct hh_cache *hh, struct sk_buff *skb)
         return dev_queue_xmit(skb);
 }
 
-static inline int neigh_output(struct neighbour *n, struct sk_buff *skb)
-{
-        struct hh_cache *hh = &n->hh;
-        if ((n->nud_state & NUD_CONNECTED) && hh->hh_len)
-                return neigh_hh_output(hh, skb);
-        else
-                return n->output(n, skb);
-}
-
 static inline struct neighbour *
 __neigh_lookup(struct neigh_table *tbl, const void *pkey, struct net_device *dev, int creat)
 {