neigh: Don't require dst in neigh_hh_init

- Add protocol to neigh_tbl so that dst->ops->protocol is not needed
- Acquire the device from neigh->dev

This results in a neigh_hh_init that will cache the samve values
regardless of the packets flowing through it.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index bc66babb5f27..9f912e4d4232 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -193,6 +193,7 @@ struct neigh_table {
         int                     family;
         int                     entry_size;
         int                     key_len;
+        __be16                  protocol;
         __u32                   (*hash)(const void *pkey,
                                         const struct net_device *dev,
                                         __u32 *hash_rnd);