1 files changed, 11 insertions, 9 deletions

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index c815f28..3863b8f 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -290,15 +290,7 @@ static struct neighbour *neigh_alloc(struct neigh_table *tbl, struct net_device
 			goto out_entries;
 	}
 
-	if (tbl->entry_size)
-		n = kzalloc(tbl->entry_size, GFP_ATOMIC);
-	else {
-		int sz = sizeof(*n) + tbl->key_len;
-
-		sz = ALIGN(sz, NEIGH_PRIV_ALIGN);
-		sz += dev->neigh_priv_len;
-		n = kzalloc(sz, GFP_ATOMIC);
-	}
+	n = kzalloc(tbl->entry_size + dev->neigh_priv_len, GFP_ATOMIC);
 	if (!n)
 		goto out_entries;
 
@@ -778,6 +770,9 @@ static void neigh_periodic_work(struct work_struct *work)
 	nht = rcu_dereference_protected(tbl->nht,
 					lockdep_is_held(&tbl->lock));
 
+	if (atomic_read(&tbl->entries) < tbl->gc_thresh1)
+		goto out;
+
 	/*
 	 *	periodically recompute ReachableTime from random function
 	 */
@@ -832,6 +827,7 @@ next_elt:
 		nht = rcu_dereference_protected(tbl->nht,
 						lockdep_is_held(&tbl->lock));
 	}
+out:
 	/* Cycle through all hash buckets every base_reachable_time/2 ticks.
 	 * ARP entry timeouts range from 1/2 base_reachable_time to 3/2
 	 * base_reachable_time.
@@ -1542,6 +1538,12 @@ static void neigh_table_init_no_netlink(struct neigh_table *tbl)
 	if (!tbl->nht || !tbl->phash_buckets)
 		panic("cannot allocate neighbour cache hashes");
 
+	if (!tbl->entry_size)
+		tbl->entry_size = ALIGN(offsetof(struct neighbour, primary_key) +
+					tbl->key_len, NEIGH_PRIV_ALIGN);
+	else
+		WARN_ON(tbl->entry_size % NEIGH_PRIV_ALIGN);
+
 	rwlock_init(&tbl->lock);
 	INIT_DEFERRABLE_WORK(&tbl->gc_work, neigh_periodic_work);
 	schedule_delayed_work(&tbl->gc_work, tbl->parms.reachable_time);