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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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d723b7dae8
If we expect the vhost-user-blk device to be used for booting a VMM along with the firmware, then need the device to support being reset. In the vhost-user context, this means the backend needs to be informed the vrings are disabled and stopped, and the owner needs to be reset too. Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
102 lines
3.1 KiB
Rust
102 lines
3.1 KiB
Rust
// Copyright 2019 Intel Corporation. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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extern crate epoll;
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extern crate net_util;
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extern crate vhost_rs;
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extern crate virtio_bindings;
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extern crate vm_memory;
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use std;
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use std::io;
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use vhost_rs::Error as VhostError;
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use vm_memory::Error as MmapError;
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pub mod blk;
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pub mod fs;
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mod handler;
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pub mod net;
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pub mod vu_common_ctrl;
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pub use self::blk::Blk;
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pub use self::fs::*;
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pub use self::net::Net;
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pub use self::vu_common_ctrl::VhostUserConfig;
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#[derive(Debug)]
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pub enum Error {
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/// Invalid available address.
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AvailAddress,
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/// Queue number is not correct
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BadQueueNum,
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/// Creating kill eventfd failed.
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CreateKillEventFd(io::Error),
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/// Cloning kill eventfd failed.
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CloneKillEventFd(io::Error),
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/// Invalid descriptor table address.
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DescriptorTableAddress,
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/// Create Epoll eventfd failed
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EpollCreateFd(io::Error),
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/// Epoll ctl error
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EpollCtl(io::Error),
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/// Epoll wait error
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EpollWait(io::Error),
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/// Read queue failed.
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FailedReadingQueue(io::Error),
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/// Signal used queue failed.
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FailedSignalingUsedQueue(io::Error),
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/// Failed to read vhost eventfd.
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MemoryRegions(MmapError),
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/// Failed to create master.
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VhostUserCreateMaster(VhostError),
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/// Failed to open vhost device.
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VhostUserOpen(VhostError),
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/// Connection to socket failed.
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VhostUserConnect(vhost_rs::Error),
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/// Get features failed.
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VhostUserGetFeatures(VhostError),
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/// Get protocol features failed.
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VhostUserGetProtocolFeatures(VhostError),
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/// Vhost-user Backend not support vhost-user protocol.
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VhostUserProtocolNotSupport,
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/// Set owner failed.
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VhostUserSetOwner(VhostError),
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/// Reset owner failed.
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VhostUserResetOwner(VhostError),
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/// Set features failed.
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VhostUserSetFeatures(VhostError),
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/// Set protocol features failed.
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VhostUserSetProtocolFeatures(VhostError),
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/// Set mem table failed.
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VhostUserSetMemTable(VhostError),
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/// Set vring num failed.
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VhostUserSetVringNum(VhostError),
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/// Set vring addr failed.
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VhostUserSetVringAddr(VhostError),
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/// Set vring base failed.
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VhostUserSetVringBase(VhostError),
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/// Set vring call failed.
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VhostUserSetVringCall(VhostError),
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/// Set vring kick failed.
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VhostUserSetVringKick(VhostError),
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/// Set vring enable failed.
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VhostUserSetVringEnable(VhostError),
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/// Failed to create vhost eventfd.
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VhostIrqCreate(io::Error),
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/// Failed to read vhost eventfd.
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VhostIrqRead(io::Error),
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/// Failed to read vhost eventfd.
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VhostUserMemoryRegion(MmapError),
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/// Failed to handle vhost-user slave request.
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VhostUserSlaveRequest(vhost_rs::vhost_user::Error),
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/// Failed to create the master request handler from slave.
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MasterReqHandlerCreation(vhost_rs::vhost_user::Error),
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/// Set slave request fd failed.
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VhostUserSetSlaveRequestFd(vhost_rs::Error),
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/// Invalid used address.
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UsedAddress,
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/// Invalid features provided from vhost-user backend
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InvalidFeatures,
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}
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type Result<T> = std::result::Result<T, Error>;
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