neigh: Add infrastructure for allocating device neigh privates.

netdev->neigh_priv_len records the private area length.

This will trigger for neigh_table objects which set tbl->entry_size
to zero, and the first instances of this will be forthcoming.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index efd7a9636aff..57ae9b9265e3 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1218,6 +1218,8 @@ static struct net_device *ipoib_add_port(const char *format,
         priv->dev->mtu  = IPOIB_UD_MTU(priv->max_ib_mtu);
         priv->mcast_mtu  = priv->admin_mtu = priv->dev->mtu;
 
+        priv->dev->neigh_priv_len = sizeof(struct ipoib_neigh);
+
         result = ib_query_pkey(hca, port, 0, &priv->pkey);
         if (result) {
                 printk(KERN_WARNING "%s: ib_query_pkey port %d failed (ret = %d)\n",