neigh: Add device constructor/destructor capability.

If the neigh entry has device private state, it will need
constructor/destructor ops.

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

1 files changed, 14 insertions, 1 deletions

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index ef750ff7497e..cdf8dc34f0ba 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -489,6 +489,14 @@ struct neighbour *neigh_create(struct neigh_table *tbl, const void *pkey,
                 goto out_neigh_release;
         }
 
+        if (dev->netdev_ops->ndo_neigh_construct) {
+                error = dev->netdev_ops->ndo_neigh_construct(n);
+                if (error < 0) {
+                        rc = ERR_PTR(error);
+                        goto out_neigh_release;
+                }
+        }
+
         /* Device specific setup. */
         if (n->parms->neigh_setup &&
             (error = n->parms->neigh_setup(n)) < 0) {
@@ -692,6 +700,8 @@ static inline void neigh_parms_put(struct neigh_parms *parms)
  */
 void neigh_destroy(struct neighbour *neigh)
 {
+        struct net_device *dev = neigh->dev;
+
         NEIGH_CACHE_STAT_INC(neigh->tbl, destroys);
 
         if (!neigh->dead) {
@@ -707,7 +717,10 @@ void neigh_destroy(struct neighbour *neigh)
         skb_queue_purge(&neigh->arp_queue);
         neigh->arp_queue_len_bytes = 0;
 
-        dev_put(neigh->dev);
+        if (dev->netdev_ops->ndo_neigh_destroy)
+                dev->netdev_ops->ndo_neigh_destroy(neigh);
+
+        dev_put(dev);
         neigh_parms_put(neigh->parms);
 
         NEIGH_PRINTK2("neigh %p is destroyed.\n", neigh);