pub unsafe extern "C" fn switchtec_diag_loopback_set(
dev: *mut switchtec_dev,
port_id: c_int,
enable: c_int,
ltssm_speed: switchtec_diag_ltssm_speed,
) -> c_intpub unsafe extern "C" fn switchtec_diag_loopback_set(
dev: *mut switchtec_dev,
port_id: c_int,
enable: c_int,
ltssm_speed: switchtec_diag_ltssm_speed,
) -> c_int