Struct TdispHostStateMachine 

pub struct TdispHostStateMachine { /* private fields */ }

The state machine for the TDISP assignment flow for a device on the host. Both the guest and host synchronize this state machine with each other as they move through the assignment flow.

Implementations

impl TdispHostStateMachine

pub fn new(host_interface: Arc<Mutex<dyn TdispHostDeviceInterface>>) -> Self

Create a new TDISP state machine with the Unlocked state.

pub fn set_debug_device_id(&mut self, debug_device_id: String)

Set the debug device ID string.

Trait Implementations

impl TdispGuestRequestInterface for TdispHostStateMachine

fn tdisp_negotiate_protocol( &mut self, requested_guest_protocol: TdispGuestProtocolType, ) -> Result<TdispDeviceInterfaceInfo, TdispGuestOperationError>

Request versioning and protocol negotiation from the host.

fn request_lock_device_resources( &mut self, ) -> Result<(), TdispGuestOperationError>

Transition the device from the Unlocked to Locked state. This takes place after the device has been assigned to the guest partition and the resources for the device have been configured by the guest by not yet validated. The device will in the Locked state can still perform unencrypted operations until it has been transitioned to the Run state. The device will be attested and moved to the Run state.

fn request_start_tdi(&mut self) -> Result<(), TdispGuestOperationError>

Transition the device from the Locked to the Run state. This takes place after the device has been assigned resources and the resources have been locked to the guest. The device will then transition to the Run state, where it will be non-functional until the guest undergoes attestation and resources are accepted into the guest context.

fn request_attestation_report( &mut self, report_type: TdispReportType, ) -> Result<Vec<u8>, TdispGuestOperationError>

Retrieves the attestation report for the device when the device is in the Locked or Run state. The device resources will not be functional until the resources have been accepted into the guest while the device is in the Run state.

fn request_unbind( &mut self, reason: TdispGuestUnbindReason, ) -> Result<(), TdispGuestOperationError>

Guest initiates a graceful unbind of the device. The guest might initiate an unbind for a variety of reasons: