for_each_tunnel_state
for_each_tunnel_state(group_state, tunnel_state)
for_each_tunnel_state(to_group_state(obj->state), tunnel_state) {
for_each_tunnel_state(group_state, tunnel_state) {
for_each_tunnel_state(group_state, tunnel_state)
for_each_tunnel_state(new_group_state, new_tunnel_state) {