Struct vmm_vhost::message::VhostUserExternalMapMsg

#[repr(C, packed(1))]
pub struct VhostUserExternalMapMsg {
    pub shmid: u8,
    padding: [u8; 7],
    pub shm_offset: u64,
    pub len: u64,
    pub ptr: u64,
}

Backend request message to map external memory into a shared memory region.

Fields

shmid: u8

Shared memory region id.

padding: [u8; 7]

shm_offset: u64

Offset into the shared memory region.

len: u64

Size of region to map.

ptr: u64

Pointer to the memory.

Implementations

impl VhostUserExternalMapMsg

pub fn new(shmid: u8, shm_offset: u64, len: u64, ptr: u64) -> Self

New instance of VhostUserExternalMapMsg struct

Trait Implementations

impl AsBytes for VhostUserExternalMapMsg

where u8: AsBytes, [u8; 7]: AsBytes, u64: AsBytes,

fn as_bytes(&self) -> &[u8]

Gets the bytes of this value.

fn as_bytes_mut(&mut self) -> &mut [u8]

where Self: FromBytes,

Gets the bytes of this value mutably.

fn write_to(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to bytes.

fn write_to_prefix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the prefix of bytes.

fn write_to_suffix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the suffix of bytes.

impl Clone for VhostUserExternalMapMsg

fn clone(&self) -> VhostUserExternalMapMsg

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for VhostUserExternalMapMsg

fn default() -> VhostUserExternalMapMsg

Returns the “default value” for a type.

impl FromBytes for VhostUserExternalMapMsg

where u8: FromBytes, [u8; 7]: FromBytes, u64: FromBytes,

fn ref_from(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the given bytes as a &Self without copying.

fn ref_from_prefix(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the prefix of the given bytes as a &Self without copying.

fn ref_from_suffix(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the suffix of the given bytes as a &Self without copying.

fn mut_from(bytes: &mut [u8]) -> Option<&mut Self>

where Self: Sized + AsBytes,

Interprets the given bytes as a &mut Self without copying.

fn mut_from_prefix(bytes: &mut [u8]) -> Option<&mut Self>

where Self: Sized + AsBytes,

Interprets the prefix of the given bytes as a &mut Self without copying.

fn mut_from_suffix(bytes: &mut [u8]) -> Option<&mut Self>

where Self: Sized + AsBytes,

Interprets the suffix of the given bytes as a &mut Self without copying.

fn slice_from(bytes: &[u8]) -> Option<&[Self]>

where Self: Sized,

Interprets the given bytes as a &[Self] without copying.

fn slice_from_prefix(bytes: &[u8], count: usize) -> Option<(&[Self], &[u8])>

where Self: Sized,

Interprets the prefix of the given bytes as a &[Self] with length equal to count without copying.

fn slice_from_suffix(bytes: &[u8], count: usize) -> Option<(&[u8], &[Self])>

where Self: Sized,

Interprets the suffix of the given bytes as a &[Self] with length equal to count without copying.

fn mut_slice_from(bytes: &mut [u8]) -> Option<&mut [Self]>

where Self: Sized + AsBytes,

Interprets the given bytes as a &mut [Self] without copying.

fn mut_slice_from_prefix( bytes: &mut [u8], count: usize ) -> Option<(&mut [Self], &mut [u8])>

where Self: Sized + AsBytes,

Interprets the prefix of the given bytes as a &mut [Self] with length equal to count without copying.

fn mut_slice_from_suffix( bytes: &mut [u8], count: usize ) -> Option<(&mut [u8], &mut [Self])>

where Self: Sized + AsBytes,

Interprets the suffix of the given bytes as a &mut [Self] with length equal to count without copying.

fn read_from(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from bytes.

fn read_from_prefix(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from the prefix of bytes.

fn read_from_suffix(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from the suffix of bytes.

impl FromZeroes for VhostUserExternalMapMsg

where u8: FromZeroes, [u8; 7]: FromZeroes, u64: FromZeroes,

fn zero(&mut self)

Overwrites self with zeroes.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

impl VhostUserMsgValidator for VhostUserExternalMapMsg

fn is_valid(&self) -> bool

Validate message syntax only. It doesn’t validate message semantics such as protocol version number and dependency on feature flags etc.

impl Copy for VhostUserExternalMapMsg