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Commit da6a8fa0 authored by David Miller's avatar David Miller Committed by David S. Miller
Browse files

neigh: Add device constructor/destructor capability. 



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

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 869759b9

include/linux/netdevice.h

+2 −0
Original line number Diff line number Diff line
@@ -974,6 +974,8 @@ struct net_device_ops { 
						    netdev_features_t features);

	int			(*ndo_set_features)(struct net_device *dev,

						    netdev_features_t features);

	int			(*ndo_neigh_construct)(struct neighbour *n);

	int			(*ndo_neigh_destroy)(struct neighbour *n);

};



/*

net/core/neighbour.c

+14 −1
Original line number Diff line number Diff line
@@ -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);