Struct vm_memory::udmabuf::sys::linux::UnixUdmabufDriver

source · 
pub struct UnixUdmabufDriver {
    driver_fd: File,
}
Expand description

A convenience wrapper for the Linux kernel’s udmabuf driver.

udmabuf is a kernel driver that turns memfd pages into dmabufs. It can be used for zero-copy buffer sharing between the guest and host when guest memory is backed by memfd pages.

Fields§

§driver_fd: File

Trait Implementations§

source§

impl UdmabufDriverTrait for UnixUdmabufDriver

source§

fn new() -> UdmabufResult<UnixUdmabufDriver>

Opens the udmabuf device on success.
source§

fn create_udmabuf( &self, mem: &GuestMemory, iovecs: &[(GuestAddress, usize)], ) -> UdmabufResult<SafeDescriptor>

Creates a dma-buf fd for the given scatter-gather list of guest memory pages (iovecs).

Auto Trait Implementations§

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.