tb_WARN
tb_WARN(path->tb, "trying to deactivate an inactive path\n");
tb_WARN(path->tb, "trying to activate already activated path\n");
#define tb_sw_WARN(sw, fmt, arg...) __TB_SW_PRINT(tb_WARN, sw, fmt, ##arg)
__TB_PORT_PRINT(tb_WARN, port, fmt, ##arg)
__TB_TUNNEL_PRINT(tb_WARN, tunnel, fmt, ##arg)