pub unsafe extern "C" fn di_devlink_walk(
hdl: *mut di_devlink_handle_t,
re: *const c_char,
mpath: *const c_char,
flags: c_uint,
arg: *mut c_void,
devlink_callback: unsafe extern "C" fn(*const di_devlink_t, *mut c_void) -> c_int,
) -> c_int