1 files changed, 19 insertions, 2 deletions

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 4cf878efdb49..50a8c73caf97 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1326,8 +1326,7 @@ void neigh_parms_destroy(struct neigh_parms *parms)
         kfree(parms);
 }
 
-
-void neigh_table_init(struct neigh_table *tbl)
+void neigh_table_init_no_netlink(struct neigh_table *tbl)
 {
         unsigned long now = jiffies;
         unsigned long phsize;
@@ -1383,10 +1382,27 @@ void neigh_table_init(struct neigh_table *tbl)
 
         tbl->last_flush = now;
         tbl->last_rand  = now + tbl->parms.reachable_time * 20;
+}
+
+void neigh_table_init(struct neigh_table *tbl)
+{
+        struct neigh_table *tmp;
+
+        neigh_table_init_no_netlink(tbl);
         write_lock(&neigh_tbl_lock);
+        for (tmp = neigh_tables; tmp; tmp = tmp->next) {
+                if (tmp->family == tbl->family)
+                        break;
+        }
         tbl->next       = neigh_tables;
         neigh_tables    = tbl;
         write_unlock(&neigh_tbl_lock);
+
+        if (unlikely(tmp)) {
+                printk(KERN_ERR "NEIGH: Registering multiple tables for "
+                       "family %d\n", tbl->family);
+                dump_stack();
+        }
 }
 
 int neigh_table_clear(struct neigh_table *tbl)
@@ -2657,6 +2673,7 @@ EXPORT_SYMBOL(neigh_rand_reach_time);
 EXPORT_SYMBOL(neigh_resolve_output);
 EXPORT_SYMBOL(neigh_table_clear);
 EXPORT_SYMBOL(neigh_table_init);
+EXPORT_SYMBOL(neigh_table_init_no_netlink);
 EXPORT_SYMBOL(neigh_update);
 EXPORT_SYMBOL(neigh_update_hhs);
 EXPORT_SYMBOL(pneigh_enqueue);