net: Embed hh_cache inside of struct neighbour.

Now that there is a one-to-one correspondance between neighbour
and hh_cache entries, we no longer need:

1) dynamic allocation
2) attachment to dst->hh
3) refcounting

Initialization of the hh_cache entry is indicated by hh_len
being non-zero, and such initialization is always done with
the neighbour's lock held as a writer.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 6fe8c2cd5acb..bd8f9f09ab5c 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -108,7 +108,7 @@ struct neighbour {
         __u8                    dead;
         seqlock_t               ha_lock;
         unsigned char           ha[ALIGN(MAX_ADDR_LEN, sizeof(unsigned long))];
-        struct hh_cache         *hh;
+        struct hh_cache         hh;
         int                     (*output)(struct sk_buff *skb);
         const struct neigh_ops  *ops;
         struct rcu_head         rcu;