globus_xio_ordering_driver_instance(3) on Linux
The text e672bd805c24, as Debian 8 (Jessie) shipped it.
Ordering driver is a transform driver and thus has to be used on top of a transport driver. An XIO handle with the ordering driver can be created with either globus_xio_handle_create() or globus_xio_server_register_accept(). When the XIO handle is closed, the ordering driver will destroy its internal resources.