pub unsafe extern "C" fn efadv_query_device(
ibvctx: *mut ibv_context,
attr: *mut efadv_device_attr,
inlen: u32,
) -> c_intpub unsafe extern "C" fn efadv_query_device(
ibvctx: *mut ibv_context,
attr: *mut efadv_device_attr,
inlen: u32,
) -> c_int