Enum BackendReq

#[repr(u32)]
pub enum BackendReq {
    IOTLB_MSG = 1,
    CONFIG_CHANGE_MSG = 2,
    VRING_HOST_NOTIFIER_MSG = 3,
    VRING_CALL = 4,
    VRING_ERR = 5,
    SHMEM_MAP = 1_000,
    SHMEM_UNMAP = 1_001,
    DEPRECATED__FS_MAP = 1_002,
    DEPRECATED__FS_UNMAP = 1_003,
    DEPRECATED__FS_SYNC = 1_004,
    DEPRECATED__FS_IO = 1_005,
    GPU_MAP = 1_006,
    EXTERNAL_MAP = 1_007,
}

Type of requests sending from backends to frontends.

These are called “backend-end message types” in the spec, so we call them BackendReq here even though it is somewhat confusing that the FrontendClient sends BackendReqs to a FrontendServer.

Variants

IOTLB_MSG = 1

Send IOTLB messages with struct vhost_iotlb_msg as payload.

CONFIG_CHANGE_MSG = 2

Notify that the virtio device’s configuration space has changed.

VRING_HOST_NOTIFIER_MSG = 3

Set host notifier for a specified queue.

VRING_CALL = 4

Indicate that a buffer was used from the vring.

VRING_ERR = 5

Indicate that an error occurred on the specific vring.

SHMEM_MAP = 1_000

Indicates a request to map a fd into a shared memory region.

SHMEM_UNMAP = 1_001

Indicates a request to unmap part of a shared memory region.

DEPRECATED__FS_MAP = 1_002

Virtio-fs draft: map file content into the window.

DEPRECATED__FS_UNMAP = 1_003

Virtio-fs draft: unmap file content from the window.

DEPRECATED__FS_SYNC = 1_004

Virtio-fs draft: sync file content.

DEPRECATED__FS_IO = 1_005

Virtio-fs draft: perform a read/write from an fd directly to GPA.

GPU_MAP = 1_006

Indicates a request to map GPU memory into a shared memory region.

EXTERNAL_MAP = 1_007

Indicates a request to map external memory into a shared memory region.

Implementations

impl BackendReq

pub fn n(value: u32) -> Option<Self>

Trait Implementations

impl Clone for BackendReq

fn clone(&self) -> BackendReq

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BackendReq

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<BackendReq> for u32

fn from(req: BackendReq) -> u32

Converts to this type from the input type.

impl Ord for BackendReq

fn cmp(&self, other: &BackendReq) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for BackendReq

fn eq(&self, other: &BackendReq) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for BackendReq

fn partial_cmp(&self, other: &BackendReq) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryFrom<u32> for BackendReq

type Error = ReqError

The type returned in the event of a conversion error.

fn try_from(value: u32) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for BackendReq

impl Eq for BackendReq

impl Req for BackendReq

impl StructuralPartialEq for BackendReq