usbip_dbg_stub_tx
usbip_dbg_stub_tx("setup txdata seqnum: %u\n",
usbip_dbg_stub_tx("setup ret unlink %lu\n", unlink->seqnum);
usbip_dbg_stub_tx("send txdata\n");
usbip_dbg_stub_tx("complete! status %d\n", urb->status);
usbip_dbg_stub_tx("ignore urb for closed connection\n");
usbip_dbg_stub_tx("setup txdata seqnum: %u\n",