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-rw-r--r--src/vhost_kern/vhost_binding.rs406
1 files changed, 406 insertions, 0 deletions
diff --git a/src/vhost_kern/vhost_binding.rs b/src/vhost_kern/vhost_binding.rs
new file mode 100644
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--- /dev/null
+++ b/src/vhost_kern/vhost_binding.rs
@@ -0,0 +1,406 @@
+// Copyright (C) 2019 Alibaba Cloud Computing. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0 or BSD-3-Clause
+//
+// Portions Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+//
+// Portions Copyright 2017 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE-BSD-Google file.
+
+/* Auto-generated by bindgen then manually edited for simplicity */
+
+#![allow(non_upper_case_globals)]
+#![allow(non_camel_case_types)]
+#![allow(non_snake_case)]
+#![allow(missing_docs)]
+#![allow(clippy::missing_safety_doc)]
+
+use crate::{Error, Result};
+use std::os::raw;
+
+pub const VHOST: raw::c_uint = 0xaf;
+pub const VHOST_VRING_F_LOG: raw::c_uint = 0;
+pub const VHOST_ACCESS_RO: raw::c_uint = 1;
+pub const VHOST_ACCESS_WO: raw::c_uint = 2;
+pub const VHOST_ACCESS_RW: raw::c_uint = 3;
+pub const VHOST_IOTLB_MISS: raw::c_uint = 1;
+pub const VHOST_IOTLB_UPDATE: raw::c_uint = 2;
+pub const VHOST_IOTLB_INVALIDATE: raw::c_uint = 3;
+pub const VHOST_IOTLB_ACCESS_FAIL: raw::c_uint = 4;
+pub const VHOST_IOTLB_MSG: raw::c_uint = 1;
+pub const VHOST_PAGE_SIZE: raw::c_uint = 4096;
+pub const VHOST_VIRTIO: raw::c_uint = 175;
+pub const VHOST_VRING_LITTLE_ENDIAN: raw::c_uint = 0;
+pub const VHOST_VRING_BIG_ENDIAN: raw::c_uint = 1;
+pub const VHOST_F_LOG_ALL: raw::c_uint = 26;
+pub const VHOST_NET_F_VIRTIO_NET_HDR: raw::c_uint = 27;
+pub const VHOST_SCSI_ABI_VERSION: raw::c_uint = 1;
+
+ioctl_ior_nr!(VHOST_GET_FEATURES, VHOST, 0x00, raw::c_ulonglong);
+ioctl_iow_nr!(VHOST_SET_FEATURES, VHOST, 0x00, raw::c_ulonglong);
+ioctl_io_nr!(VHOST_SET_OWNER, VHOST, 0x01);
+ioctl_io_nr!(VHOST_RESET_OWNER, VHOST, 0x02);
+ioctl_iow_nr!(VHOST_SET_MEM_TABLE, VHOST, 0x03, vhost_memory);
+ioctl_iow_nr!(VHOST_SET_LOG_BASE, VHOST, 0x04, raw::c_ulonglong);
+ioctl_iow_nr!(VHOST_SET_LOG_FD, VHOST, 0x07, raw::c_int);
+ioctl_iow_nr!(VHOST_SET_VRING_NUM, VHOST, 0x10, vhost_vring_state);
+ioctl_iow_nr!(VHOST_SET_VRING_ADDR, VHOST, 0x11, vhost_vring_addr);
+ioctl_iow_nr!(VHOST_SET_VRING_BASE, VHOST, 0x12, vhost_vring_state);
+ioctl_iowr_nr!(VHOST_GET_VRING_BASE, VHOST, 0x12, vhost_vring_state);
+ioctl_iow_nr!(VHOST_SET_VRING_KICK, VHOST, 0x20, vhost_vring_file);
+ioctl_iow_nr!(VHOST_SET_VRING_CALL, VHOST, 0x21, vhost_vring_file);
+ioctl_iow_nr!(VHOST_SET_VRING_ERR, VHOST, 0x22, vhost_vring_file);
+ioctl_iow_nr!(VHOST_NET_SET_BACKEND, VHOST, 0x30, vhost_vring_file);
+ioctl_iow_nr!(VHOST_SCSI_SET_ENDPOINT, VHOST, 0x40, vhost_scsi_target);
+ioctl_iow_nr!(VHOST_SCSI_CLEAR_ENDPOINT, VHOST, 0x41, vhost_scsi_target);
+ioctl_iow_nr!(VHOST_SCSI_GET_ABI_VERSION, VHOST, 0x42, raw::c_int);
+ioctl_iow_nr!(VHOST_SCSI_SET_EVENTS_MISSED, VHOST, 0x43, raw::c_uint);
+ioctl_iow_nr!(VHOST_SCSI_GET_EVENTS_MISSED, VHOST, 0x44, raw::c_uint);
+ioctl_iow_nr!(VHOST_VSOCK_SET_GUEST_CID, VHOST, 0x60, raw::c_ulonglong);
+ioctl_iow_nr!(VHOST_VSOCK_SET_RUNNING, VHOST, 0x61, raw::c_int);
+
+#[repr(C)]
+#[derive(Default)]
+pub struct __IncompleteArrayField<T>(::std::marker::PhantomData<T>);
+
+impl<T> __IncompleteArrayField<T> {
+ #[inline]
+ pub fn new() -> Self {
+ __IncompleteArrayField(::std::marker::PhantomData)
+ }
+
+ #[inline]
+ #[allow(clippy::trivially_copy_pass_by_ref)]
+ #[allow(clippy::useless_transmute)]
+ pub unsafe fn as_ptr(&self) -> *const T {
+ ::std::mem::transmute(self)
+ }
+
+ #[inline]
+ #[allow(clippy::useless_transmute)]
+ pub unsafe fn as_mut_ptr(&mut self) -> *mut T {
+ ::std::mem::transmute(self)
+ }
+
+ #[inline]
+ pub unsafe fn as_slice(&self, len: usize) -> &[T] {
+ ::std::slice::from_raw_parts(self.as_ptr(), len)
+ }
+
+ #[inline]
+ pub unsafe fn as_mut_slice(&mut self, len: usize) -> &mut [T] {
+ ::std::slice::from_raw_parts_mut(self.as_mut_ptr(), len)
+ }
+}
+
+impl<T> ::std::fmt::Debug for __IncompleteArrayField<T> {
+ fn fmt(&self, fmt: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
+ fmt.write_str("__IncompleteArrayField")
+ }
+}
+
+impl<T> ::std::clone::Clone for __IncompleteArrayField<T> {
+ #[inline]
+ fn clone(&self) -> Self {
+ Self::new()
+ }
+}
+
+impl<T> ::std::marker::Copy for __IncompleteArrayField<T> {}
+
+#[repr(C)]
+#[derive(Debug, Default, Copy, Clone)]
+pub struct vhost_vring_state {
+ pub index: raw::c_uint,
+ pub num: raw::c_uint,
+}
+
+#[repr(C)]
+#[derive(Debug, Default, Copy, Clone)]
+pub struct vhost_vring_file {
+ pub index: raw::c_uint,
+ pub fd: raw::c_int,
+}
+
+#[repr(C)]
+#[derive(Debug, Default, Copy, Clone)]
+pub struct vhost_vring_addr {
+ pub index: raw::c_uint,
+ pub flags: raw::c_uint,
+ pub desc_user_addr: raw::c_ulonglong,
+ pub used_user_addr: raw::c_ulonglong,
+ pub avail_user_addr: raw::c_ulonglong,
+ pub log_guest_addr: raw::c_ulonglong,
+}
+
+#[repr(C)]
+#[derive(Debug, Default, Copy, Clone)]
+pub struct vhost_iotlb_msg {
+ pub iova: raw::c_ulonglong,
+ pub size: raw::c_ulonglong,
+ pub uaddr: raw::c_ulonglong,
+ pub perm: raw::c_uchar,
+ pub type_: raw::c_uchar,
+}
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct vhost_msg {
+ pub type_: raw::c_int,
+ pub __bindgen_anon_1: vhost_msg__bindgen_ty_1,
+}
+
+impl Default for vhost_msg {
+ fn default() -> Self {
+ unsafe { ::std::mem::zeroed() }
+ }
+}
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub union vhost_msg__bindgen_ty_1 {
+ pub iotlb: vhost_iotlb_msg,
+ pub padding: [raw::c_uchar; 64usize],
+ _bindgen_union_align: [u64; 8usize],
+}
+
+impl Default for vhost_msg__bindgen_ty_1 {
+ fn default() -> Self {
+ unsafe { ::std::mem::zeroed() }
+ }
+}
+
+#[repr(C)]
+#[derive(Debug, Default, Copy, Clone)]
+pub struct vhost_memory_region {
+ pub guest_phys_addr: raw::c_ulonglong,
+ pub memory_size: raw::c_ulonglong,
+ pub userspace_addr: raw::c_ulonglong,
+ pub flags_padding: raw::c_ulonglong,
+}
+
+#[repr(C)]
+#[derive(Debug, Default, Clone)]
+pub struct vhost_memory {
+ pub nregions: raw::c_uint,
+ pub padding: raw::c_uint,
+ pub regions: __IncompleteArrayField<vhost_memory_region>,
+ __force_alignment: [u64; 0],
+}
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct vhost_scsi_target {
+ pub abi_version: raw::c_int,
+ pub vhost_wwpn: [raw::c_char; 224usize],
+ pub vhost_tpgt: raw::c_ushort,
+ pub reserved: raw::c_ushort,
+}
+
+impl Default for vhost_scsi_target {
+ fn default() -> Self {
+ unsafe { ::std::mem::zeroed() }
+ }
+}
+
+/// Helper to support vhost::set_mem_table()
+pub struct VhostMemory {
+ buf: Vec<vhost_memory>,
+}
+
+impl VhostMemory {
+ // Limit number of regions to u16 to simplify error handling
+ pub fn new(entries: u16) -> Self {
+ let size = std::mem::size_of::<vhost_memory_region>() * entries as usize;
+ let count = (size + 2 * std::mem::size_of::<vhost_memory>() - 1)
+ / std::mem::size_of::<vhost_memory>();
+ let mut buf: Vec<vhost_memory> = vec![Default::default(); count];
+ buf[0].nregions = u32::from(entries);
+ VhostMemory { buf }
+ }
+
+ pub fn as_ptr(&self) -> *const char {
+ &self.buf[0] as *const vhost_memory as *const char
+ }
+
+ pub fn get_header(&self) -> &vhost_memory {
+ &self.buf[0]
+ }
+
+ pub fn get_region(&self, index: u32) -> Option<&vhost_memory_region> {
+ if index >= self.buf[0].nregions {
+ return None;
+ }
+ // Safe because we have allocated enough space nregions
+ let regions = unsafe { self.buf[0].regions.as_slice(self.buf[0].nregions as usize) };
+ Some(&regions[index as usize])
+ }
+
+ pub fn set_region(&mut self, index: u32, region: &vhost_memory_region) -> Result<()> {
+ if index >= self.buf[0].nregions {
+ return Err(Error::InvalidGuestMemory);
+ }
+ // Safe because we have allocated enough space nregions and checked the index.
+ let regions = unsafe { self.buf[0].regions.as_mut_slice(index as usize + 1) };
+ regions[index as usize] = *region;
+ Ok(())
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ fn bindgen_test_layout_vhost_vring_state() {
+ assert_eq!(
+ ::std::mem::size_of::<vhost_vring_state>(),
+ 8usize,
+ concat!("Size of: ", stringify!(vhost_vring_state))
+ );
+ assert_eq!(
+ ::std::mem::align_of::<vhost_vring_state>(),
+ 4usize,
+ concat!("Alignment of ", stringify!(vhost_vring_state))
+ );
+ }
+
+ #[test]
+ fn bindgen_test_layout_vhost_vring_file() {
+ assert_eq!(
+ ::std::mem::size_of::<vhost_vring_file>(),
+ 8usize,
+ concat!("Size of: ", stringify!(vhost_vring_file))
+ );
+ assert_eq!(
+ ::std::mem::align_of::<vhost_vring_file>(),
+ 4usize,
+ concat!("Alignment of ", stringify!(vhost_vring_file))
+ );
+ }
+
+ #[test]
+ fn bindgen_test_layout_vhost_vring_addr() {
+ assert_eq!(
+ ::std::mem::size_of::<vhost_vring_addr>(),
+ 40usize,
+ concat!("Size of: ", stringify!(vhost_vring_addr))
+ );
+ assert_eq!(
+ ::std::mem::align_of::<vhost_vring_addr>(),
+ 8usize,
+ concat!("Alignment of ", stringify!(vhost_vring_addr))
+ );
+ }
+
+ #[test]
+ fn bindgen_test_layout_vhost_msg__bindgen_ty_1() {
+ assert_eq!(
+ ::std::mem::size_of::<vhost_msg__bindgen_ty_1>(),
+ 64usize,
+ concat!("Size of: ", stringify!(vhost_msg__bindgen_ty_1))
+ );
+ assert_eq!(
+ ::std::mem::align_of::<vhost_msg__bindgen_ty_1>(),
+ 8usize,
+ concat!("Alignment of ", stringify!(vhost_msg__bindgen_ty_1))
+ );
+ }
+
+ #[test]
+ fn bindgen_test_layout_vhost_msg() {
+ assert_eq!(
+ ::std::mem::size_of::<vhost_msg>(),
+ 72usize,
+ concat!("Size of: ", stringify!(vhost_msg))
+ );
+ assert_eq!(
+ ::std::mem::align_of::<vhost_msg>(),
+ 8usize,
+ concat!("Alignment of ", stringify!(vhost_msg))
+ );
+ }
+
+ #[test]
+ fn bindgen_test_layout_vhost_memory_region() {
+ assert_eq!(
+ ::std::mem::size_of::<vhost_memory_region>(),
+ 32usize,
+ concat!("Size of: ", stringify!(vhost_memory_region))
+ );
+ assert_eq!(
+ ::std::mem::align_of::<vhost_memory_region>(),
+ 8usize,
+ concat!("Alignment of ", stringify!(vhost_memory_region))
+ );
+ }
+
+ #[test]
+ fn bindgen_test_layout_vhost_memory() {
+ assert_eq!(
+ ::std::mem::size_of::<vhost_memory>(),
+ 8usize,
+ concat!("Size of: ", stringify!(vhost_memory))
+ );
+ assert_eq!(
+ ::std::mem::align_of::<vhost_memory>(),
+ 8usize,
+ concat!("Alignment of ", stringify!(vhost_memory))
+ );
+ }
+
+ #[test]
+ fn bindgen_test_layout_vhost_iotlb_msg() {
+ assert_eq!(
+ ::std::mem::size_of::<vhost_iotlb_msg>(),
+ 32usize,
+ concat!("Size of: ", stringify!(vhost_iotlb_msg))
+ );
+ assert_eq!(
+ ::std::mem::align_of::<vhost_iotlb_msg>(),
+ 8usize,
+ concat!("Alignment of ", stringify!(vhost_iotlb_msg))
+ );
+ }
+
+ #[test]
+ fn bindgen_test_layout_vhost_scsi_target() {
+ assert_eq!(
+ ::std::mem::size_of::<vhost_scsi_target>(),
+ 232usize,
+ concat!("Size of: ", stringify!(vhost_scsi_target))
+ );
+ assert_eq!(
+ ::std::mem::align_of::<vhost_scsi_target>(),
+ 4usize,
+ concat!("Alignment of ", stringify!(vhost_scsi_target))
+ );
+ }
+
+ #[test]
+ fn test_vhostmemory() {
+ let mut obj = VhostMemory::new(2);
+ let region = vhost_memory_region {
+ guest_phys_addr: 0x1000u64,
+ memory_size: 0x2000u64,
+ userspace_addr: 0x300000u64,
+ flags_padding: 0u64,
+ };
+ assert!(obj.get_region(2).is_none());
+
+ {
+ let header = obj.get_header();
+ assert_eq!(header.nregions, 2u32);
+ }
+ {
+ assert!(obj.set_region(0, &region).is_ok());
+ assert!(obj.set_region(1, &region).is_ok());
+ assert!(obj.set_region(2, &region).is_err());
+ }
+
+ let region1 = obj.get_region(1).unwrap();
+ assert_eq!(region1.guest_phys_addr, 0x1000u64);
+ assert_eq!(region1.memory_size, 0x2000u64);
+ assert_eq!(region1.userspace_addr, 0x300000u64);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 22:35:43 +0000