55         let kill_evt = Event::new().map_err(Error::CreateKillEvent)?;  in new()
57         let tap: T = T::new(true, false).map_err(Error::TapOpen)?;  in new()
58         tap.set_ip_addr(ip_addr).map_err(Error::TapSetIp)?;  in new()
59         tap.set_netmask(netmask).map_err(Error::TapSetNetmask)?;  in new()
61             .map_err(Error::TapSetMacAddress)?;  in new()
67         .map_err(Error::TapSetOffload)?;  in new()
72             .map_err(Error::TapSetVnetHdrSize)?;  in new()
74         tap.enable().map_err(Error::TapEnable)?;  in new()
75         let vhost_net_handle = U::new(vhost_net_device_path, mem).map_err(Error::VhostOpen)?;  in new()
91             vhost_interrupt.push(Event::new().map_err(Error::VhostIrqCreate)?);  in new()
94         let (request_tube, response_tube) = Tube::pair().map_err(Error::CreateTube)?;  in new()
97             workers_kill_evt: Some(kill_evt.try_clone().map_err(Error::CloneKillEvent)?),  in new()
229                                             .map_err(Error::VhostNetSetBackend)?;  in activate()
237                                             .map_err(Error::VhostNetSetBackend)?;  in activate()