Struct devices::virtio::interrupt::Interrupt

pub struct Interrupt {
    inner: Arc<InterruptInner>,
}

Fields

inner: Arc<InterruptInner>

Implementations

impl Interrupt

pub fn signal(&self, vector: u16, interrupt_status_mask: u32)

Writes to the irqfd to VMM to deliver virtual interrupt to the guest.

If MSI-X is enabled in this device, MSI-X interrupt is preferred. Write to the irqfd to VMM to deliver virtual interrupt to the guest

pub fn signal_used_queue(&self, vector: u16)

Notify the driver that buffers have been placed in the used queue.

pub fn signal_config_changed(&self)

Notify the driver that the device configuration has changed.

pub fn get_resample_evt(&self) -> Option<&Event>

Get the event to signal resampling is needed if it exists.

pub fn do_interrupt_resample(&self)

Reads the status and writes to the interrupt event. Doesn’t read the resample event, it assumes the resample has been requested.

impl Interrupt

pub fn new( irq_evt_lvl: IrqLevelEvent, msix_config: Option<Arc<Mutex<MsixConfig>>>, config_msix_vector: u16, wakeup_event: Option<PmWakeupEvent> ) -> Interrupt

pub fn new_from_snapshot( irq_evt_lvl: IrqLevelEvent, msix_config: Option<Arc<Mutex<MsixConfig>>>, config_msix_vector: u16, snapshot: InterruptSnapshot, wakeup_event: Option<PmWakeupEvent> ) -> Interrupt

Create a new Interrupt, restoring internal state to match snapshot.

The other arguments are assumed to be snapshot’d and restore’d elsewhere.

pub fn new_mmio( irq_evt_edge: IrqEdgeEvent, async_intr_status: bool ) -> Interrupt

pub fn new_vhost_user( call_evt: Event, signal_config_changed_fn: Box<dyn Fn() + Send + Sync> ) -> Interrupt

Create an Interrupt wrapping a vhost-user vring call event and function that sends a VHOST_USER_BACKEND_CONFIG_CHANGE_MSG to the frontend.

pub fn get_interrupt_evt(&self) -> &Event

Get a reference to the interrupt event.

pub fn interrupt_resample(&self)

Handle interrupt resampling event, reading the value from the event and doing the resample.

pub fn get_msix_config(&self) -> &Option<Arc<Mutex<MsixConfig>>>

Get a reference to the msix configuration

pub fn read_interrupt_status(&self) -> u8

Reads the current value of the interrupt status.

pub fn read_and_reset_interrupt_status(&self) -> u8

Reads the current value of the interrupt status and resets it to 0.

pub fn clear_interrupt_status_bits(&self, mask: u8)

Clear the bits set in mask in the interrupt status.

pub fn snapshot(&self) -> InterruptSnapshot

Snapshot internal state. Can be restored with with Interrupt::new_from_snapshot.

pub fn set_wakeup_event_active(&self, active: bool)

Trait Implementations

impl Clone for Interrupt

fn clone(&self) -> Interrupt

Returns a copy of the value.

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

Performs copy-assignment from source.