Trait VirtioDevice 

pub trait VirtioDevice: InspectMut + Send {
    // Required methods
    fn traits(&self) -> DeviceTraits;
    fn read_registers_u32(&self, offset: u16) -> u32;
    fn write_registers_u32(&mut self, offset: u16, val: u32);
    fn enable(&mut self, resources: Resources) -> Result<()>;
    fn poll_disable(&mut self, cx: &mut Context<'_>) -> Poll<()>;
}

Required Methods

fn traits(&self) -> DeviceTraits

fn read_registers_u32(&self, offset: u16) -> u32

fn write_registers_u32(&mut self, offset: u16, val: u32)

fn enable(&mut self, resources: Resources) -> Result<()>

Enable the device with the given resources.

Called when the guest sets DRIVER_OK. On success, the device should start processing queues and the transport will reflect DRIVER_OK in the device status. On failure, the transport will log the error and leave DRIVER_OK unset, so the device remains inert and the guest will observe failures through IO timeouts.

fn poll_disable(&mut self, cx: &mut Context<'_>) -> Poll<()>

Poll the device to complete a disable/reset operation.

This is called when the guest writes status=0 (device reset). The device should stop workers and drain any in-flight IO. Returns Poll::Ready(()) when the disable is complete, or Poll::Pending if more work is needed.

Devices that don’t need async cleanup can return Poll::Ready(()) immediately.

Implementors