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Rust sources and some data files should not be executable. The perms are set to 644. Signed-off-by: Anatol Belski <ab@php.net>
195 lines
5.3 KiB
Rust
195 lines
5.3 KiB
Rust
// Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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//
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// Portions Copyright 2017 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE-BSD-3-Clause file.
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//
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// Copyright © 2019 Intel Corporation
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//
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// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
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//! Implements virtio devices, queues, and transport mechanisms.
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extern crate arc_swap;
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extern crate epoll;
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#[macro_use]
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extern crate log;
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#[cfg(feature = "pci_support")]
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extern crate pci;
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extern crate serde;
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#[macro_use]
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extern crate serde_derive;
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extern crate serde_json;
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extern crate vhost_rs;
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extern crate virtio_bindings;
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extern crate vm_device;
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extern crate vm_memory;
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use std::fmt;
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use std::io;
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#[macro_use]
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mod device;
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pub mod block;
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mod console;
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mod iommu;
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pub mod mem;
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pub mod net;
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pub mod net_util;
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mod pmem;
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pub mod queue;
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mod rng;
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pub mod vsock;
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pub mod transport;
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pub mod vhost_user;
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pub use self::block::*;
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pub use self::console::*;
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pub use self::device::*;
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pub use self::iommu::*;
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pub use self::mem::*;
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pub use self::net::*;
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pub use self::net_util::*;
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pub use self::pmem::*;
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pub use self::queue::*;
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pub use self::rng::*;
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pub use self::vsock::*;
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const DEVICE_INIT: u32 = 0x00;
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const DEVICE_ACKNOWLEDGE: u32 = 0x01;
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const DEVICE_DRIVER: u32 = 0x02;
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const DEVICE_DRIVER_OK: u32 = 0x04;
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const DEVICE_FEATURES_OK: u32 = 0x08;
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const DEVICE_FAILED: u32 = 0x80;
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const VIRTIO_F_VERSION_1: u32 = 32;
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const VIRTIO_F_IOMMU_PLATFORM: u32 = 33;
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const VIRTIO_F_IN_ORDER: u32 = 35;
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// Types taken from linux/virtio_ids.h
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#[derive(Copy, Clone, Debug)]
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#[allow(dead_code)]
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#[allow(non_camel_case_types)]
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#[repr(C)]
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pub enum VirtioDeviceType {
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TYPE_NET = 1,
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TYPE_BLOCK = 2,
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TYPE_CONSOLE = 3,
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TYPE_RNG = 4,
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TYPE_BALLOON = 5,
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TYPE_9P = 9,
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TYPE_GPU = 16,
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TYPE_INPUT = 18,
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TYPE_VSOCK = 19,
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TYPE_IOMMU = 23,
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TYPE_MEM = 24,
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TYPE_FS = 26,
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TYPE_PMEM = 27,
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TYPE_UNKNOWN = 0xFF,
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}
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impl From<u32> for VirtioDeviceType {
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fn from(t: u32) -> Self {
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match t {
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1 => VirtioDeviceType::TYPE_NET,
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2 => VirtioDeviceType::TYPE_BLOCK,
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3 => VirtioDeviceType::TYPE_CONSOLE,
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4 => VirtioDeviceType::TYPE_RNG,
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5 => VirtioDeviceType::TYPE_BALLOON,
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9 => VirtioDeviceType::TYPE_9P,
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16 => VirtioDeviceType::TYPE_GPU,
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18 => VirtioDeviceType::TYPE_INPUT,
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19 => VirtioDeviceType::TYPE_VSOCK,
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23 => VirtioDeviceType::TYPE_IOMMU,
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24 => VirtioDeviceType::TYPE_MEM,
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26 => VirtioDeviceType::TYPE_FS,
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27 => VirtioDeviceType::TYPE_PMEM,
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_ => VirtioDeviceType::TYPE_UNKNOWN,
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}
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}
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}
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// In order to use the `{}` marker, the trait `fmt::Display` must be implemented
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// manually for the type VirtioDeviceType.
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impl fmt::Display for VirtioDeviceType {
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// This trait requires `fmt` with this exact signature.
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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let output = match *self {
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VirtioDeviceType::TYPE_NET => "net",
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VirtioDeviceType::TYPE_BLOCK => "block",
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VirtioDeviceType::TYPE_CONSOLE => "console",
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VirtioDeviceType::TYPE_RNG => "rng",
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VirtioDeviceType::TYPE_BALLOON => "balloon",
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VirtioDeviceType::TYPE_GPU => "gpu",
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VirtioDeviceType::TYPE_9P => "9p",
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VirtioDeviceType::TYPE_INPUT => "input",
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VirtioDeviceType::TYPE_VSOCK => "vsock",
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VirtioDeviceType::TYPE_IOMMU => "iommu",
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VirtioDeviceType::TYPE_MEM => "mem",
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VirtioDeviceType::TYPE_FS => "fs",
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VirtioDeviceType::TYPE_PMEM => "pmem",
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VirtioDeviceType::TYPE_UNKNOWN => "UNKNOWN",
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};
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write!(f, "{}", output)
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}
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}
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#[allow(dead_code)]
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const INTERRUPT_STATUS_USED_RING: u32 = 0x1;
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#[allow(dead_code)]
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const INTERRUPT_STATUS_CONFIG_CHANGED: u32 = 0x2;
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#[cfg(feature = "pci_support")]
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const VIRTIO_MSI_NO_VECTOR: u16 = 0xffff;
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#[derive(Debug)]
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pub enum ActivateError {
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EpollCtl(std::io::Error),
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BadActivate,
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/// Queue number is not correct
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BadQueueNum,
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/// Failed to clone Kill event
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CloneKillEventFd,
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/// Failed to create Vhost-user interrupt eventfd
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VhostIrqCreate,
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/// Failed to setup vhost-user daemon.
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VhostUserSetup(vhost_user::Error),
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/// Failed to setup vhost-user daemon.
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VhostUserNetSetup(vhost_user::Error),
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/// Failed to setup vhost-user daemon.
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VhostUserBlkSetup(vhost_user::Error),
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/// Failed to reset vhost-user daemon.
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VhostUserReset(vhost_user::Error),
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}
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pub type ActivateResult = std::result::Result<(), ActivateError>;
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pub type DeviceEventT = u16;
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#[derive(Debug)]
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pub enum Error {
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FailedReadingQueue {
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event_type: &'static str,
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underlying: io::Error,
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},
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FailedReadTap,
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FailedSignalingUsedQueue(io::Error),
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PayloadExpected,
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UnknownEvent {
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device: &'static str,
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event: DeviceEventT,
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},
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IoError(io::Error),
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RegisterListener(io::Error),
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UnregisterListener(io::Error),
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EpollCreateFd(io::Error),
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EpollCtl(io::Error),
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EpollWait(io::Error),
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FailedSignalingDriver(io::Error),
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VhostUserUpdateMemory(vhost_user::Error),
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EventfdError(io::Error),
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SetShmRegionsNotSupported,
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EpollHander(String),
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NoMemoryConfigured,
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}
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