+static uword
+null_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ u16 n_vectors = frame->n_vectors;
+
+ vlib_node_increment_counter (vm, node->node_index, 0, n_vectors);
+ vlib_buffer_free (vm, vlib_frame_args (frame), n_vectors);
+ vlib_frame_free (vm, node, frame);
+
+ return n_vectors;
+}
+