Struct MsiConnection 

pub struct MsiConnection { /* private fields */ }

A late-bound MSI backend slot.

A connection carries no device identity — it is purely the backend that MSIs are delivered to, filled in after construction via connect. Identity is supplied when a target is derived via msi_target, or when a DmaTarget is built from it.

Implementations

impl MsiConnection

pub fn new() -> Self

Creates a new disconnected MSI connection.

The connection is purely the late-bound MSI backend slot; it carries no device identity. Callers stamp identity when they derive a target via msi_target, or by building a DmaTarget from it.

pub fn connect(&self, signal_msi: Arc<dyn SignalMsi>)

Updates the MSI target to which this connection signals interrupts.

pub fn connect_irqfd(&self, irqfd: Arc<dyn IrqFd>)

Sets the [IrqFd] for kernel-mediated MSI route allocation.

When present, MsiTarget::new_route can create MsiRoute instances for direct interrupt delivery.

pub fn msi_target(&self, bus_range: AssignedBusRange, devfn: u8) -> MsiTarget

Derives an MSI target with the given identity, sharing this connection’s (late-bound) backend slot.

pub fn target(&self) -> MsiTarget

Derives an MSI target with no device identity (an empty bus range).

Use for MSI emitters that don’t need a meaningful requester ID, or that re-anchor identity themselves (e.g. PCIe switches).

Trait Implementations

impl Debug for MsiConnection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MsiConnection

fn default() -> Self

Returns the “default value” for a type.