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-rw-r--r--net/core/neighbour.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 857915a12c15..d8d0ca99c651 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -466,6 +466,28 @@ out_neigh_release:
goto out;
}
+struct pneigh_entry *__pneigh_lookup(struct neigh_table *tbl,
+ struct net *net, const void *pkey, struct net_device *dev)
+{
+ struct pneigh_entry *n;
+ int key_len = tbl->key_len;
+ u32 hash_val = *(u32 *)(pkey + key_len - 4);
+
+ hash_val ^= (hash_val >> 16);
+ hash_val ^= hash_val >> 8;
+ hash_val ^= hash_val >> 4;
+ hash_val &= PNEIGH_HASHMASK;
+
+ for (n = tbl->phash_buckets[hash_val]; n; n = n->next) {
+ if (!memcmp(n->key, pkey, key_len) &&
+ (pneigh_net(n) == net) &&
+ (n->dev == dev || !n->dev))
+ break;
+ }
+
+ return n;
+}
+
struct pneigh_entry * pneigh_lookup(struct neigh_table *tbl,
struct net *net, const void *pkey,
struct net_device *dev, int creat)
@@ -2808,6 +2830,7 @@ EXPORT_SYMBOL(neigh_table_init_no_netlink);
EXPORT_SYMBOL(neigh_update);
EXPORT_SYMBOL(pneigh_enqueue);
EXPORT_SYMBOL(pneigh_lookup);
+EXPORT_SYMBOL_GPL(__pneigh_lookup);
#ifdef CONFIG_ARPD
EXPORT_SYMBOL(neigh_app_ns);