Struct NvmeDriver 

pub struct NvmeDriver<D: DeviceBacking> { /* private fields */ }

An NVMe driver.

Note that if this is dropped, the process will abort. Call NvmeDriver::shutdown to drop this.

Further, note that this is an internal interface to be used only by NvmeDisk! Remove any sanitization in fuzz_nvm_driver.rs if this struct is used anywhere else.

Implementations

impl<D: DeviceBacking> NvmeDriver<D>

pub async fn new( driver_source: &VmTaskDriverSource, cpu_count: u32, device: D, bounce_buffer: bool, ) -> Result<Self>

Initializes the driver.

pub async fn shutdown(self)

Shuts the device down.

pub async fn namespace( &mut self, nsid: u32, ) -> Result<Arc<Namespace>, NamespaceError>

Gets the namespace with namespace ID nsid.

pub fn fallback_cpu_count(&self) -> usize

Returns the number of CPUs that are in fallback mode (that are using a remote CPU’s queue due to a failure or resource limitation).

pub async fn save(&mut self) -> Result<NvmeDriverSavedState>

Saves the NVMe driver state during servicing.

pub async fn clear_existing_state( driver_source: &VmTaskDriverSource, device: D, ) -> Result<()>

This should only be called during restore if keepalive is no longer supported and the previously enabled device needs to be reset. It performs a controller reset by setting cc.en to 0. It will then also drop the given device instance.

pub async fn restore( driver_source: &VmTaskDriverSource, cpu_count: u32, device: D, saved_state: &NvmeDriverSavedState, bounce_buffer: bool, ) -> Result<Self>

Restores NVMe driver state after servicing.

pub fn update_servicing_flags(&mut self, nvme_keepalive: bool)

Change device’s behavior when servicing.

Trait Implementations

impl<D: DeviceBacking> Drop for NvmeDriver<D>

fn drop(&mut self)

Executes the destructor for this type.

impl<D: DeviceBacking> Inspect for NvmeDriver<D>

fn inspect(&self, req: Request<'_>)

Inspects the object.