Regarding Bi directional PAD

Hi Everyone, I am having one doubt in pading the signals. module_A u_module_A ( .my_output(my_output), .my_input(my_output), etc.. ); module_B u_module_B ( .temp_input (my_output), .etc., ) I want to route the my_output from my module_A to temp_input of module_B, at the same time, i want to loop-back the my_output to my_input. So in real time the signal is routed through which device? Is it require any PAD (bidirectional PAD) ??? Please clarify me.. Thanks in advance..