session: instantiate appns lookup table only once

Change-Id: I39d634b7691a524e5221c28997a737102298c281
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/session/application_namespace.c b/src/vnet/session/application_namespace.c
index a827551..f66dc27 100644
--- a/src/vnet/session/application_namespace.c
+++ b/src/vnet/session/application_namespace.c
@@ -89,15 +89,16 @@
 	return clib_error_return_code (0, VNET_API_ERROR_INVALID_VALUE, 0,
 				       "sw_if_index or fib_id must be "
 				       "configured");
-      st = session_table_alloc ();
-      session_table_init (st);
-
       app_ns = app_namespace_get_from_id (a->ns_id);
       if (!app_ns)
-	app_ns = app_namespace_alloc (a->ns_id);
+	{
+	  app_ns = app_namespace_alloc (a->ns_id);
+	  st = session_table_alloc ();
+	  session_table_init (st);
+	  app_ns->local_table_index = session_table_index (st);
+	}
       app_ns->ns_secret = a->secret;
       app_ns->sw_if_index = a->sw_if_index;
-      app_ns->local_table_index = session_table_index (st);
       app_ns->ip4_fib_index =
 	fib_table_find (FIB_PROTOCOL_IP4, a->ip4_fib_id);
       app_ns->ip6_fib_index =
@@ -140,8 +141,10 @@
 app_namespaces_init (void)
 {
   u8 *ns_id = format (0, "default");
-  app_namespace_lookup_table =
-    hash_create_vec (0, sizeof (u8), sizeof (uword));
+
+  if (!app_namespace_lookup_table)
+    app_namespace_lookup_table =
+      hash_create_vec (0, sizeof (u8), sizeof (uword));
 
   /*
    * Allocate default namespace
diff --git a/src/vnet/session/session_test.c b/src/vnet/session/session_test.c
index 433c20e..986837c 100644
--- a/src/vnet/session/session_test.c
+++ b/src/vnet/session/session_test.c
@@ -227,6 +227,7 @@
 		"server shouldn't have access to local table");
 
   unbind_args.app_index = server_index;
+  unbind_args.handle = bind_args.handle;
   error = vnet_unbind (&unbind_args);
   SESSION_TEST ((error == 0), "unbind should work");