Enum IrqSelector 

#[non_exhaustive]
pub enum IrqSelector {
    ByNumber(u32),
    ByLabel(Cow<'static, str>),
}

Which IRQ Op::SteerIrq targets.

Two ways to name the same hardware IRQ:

• ByNumber — the literal Linux IRQ number (the leading column in /proc/interrupts, the <N> in /proc/irq/<N>/). Use when the scenario already resolved the number (e.g. via the per-NIC IRQ discovery a test does itself).
• ByLabel — the /proc/interrupts action name (the last whitespace token on the IRQ’s line). The dispatcher scans /proc/interrupts for the first line whose last token equals the label and steers that IRQ. Use when the number is not known ahead of time but the device label is stable. On the virtio-MMIO transport ktstr boots, the NIC registers ONE shared IRQ whose action name is the bare device basename (e.g. "virtio1"), so that resolves uniquely. Limitation: the match is the line’s last token only — a shared IRQ (a comma-separated action chain) matches just the LAST action, and a multi-word action name never matches. The match deliberately is not widened to any token because the per-CPU count / chip / hwirq columns would then false-match; steer by ByNumber for a shared or multi-word-named IRQ.

#[non_exhaustive]

IrqSelector is #[non_exhaustive] — see [crate::non_exhaustive] for the cross-crate pattern-match and construction rules shared by every such type. Prefer the by_number / by_label constructors over naming variants directly.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

ByNumber(u32)

The literal Linux IRQ number (the /proc/interrupts leading column, the <N> in /proc/irq/<N>/smp_affinity_list).

ByLabel(Cow<'static, str>)

The /proc/interrupts action-name label (the line’s last whitespace token) — resolved to an IRQ number at dispatch.

Implementations

impl IrqSelector

pub const fn by_number(irq: u32) -> Self

Select an IRQ by its literal Linux IRQ number. Const so it composes inside const scenarios + builds.

pub fn by_label(label: impl Into<Cow<'static, str>>) -> Self

Select an IRQ by its /proc/interrupts action-name label (the last whitespace token on the IRQ’s line, e.g. a virtio-net device basename like "virtio1"). Accepts any string-like input (&'static str, String, Cow<'static, str>), mirroring the cgroup-name constructor convention on Op.

Trait Implementations

impl Clone for IrqSelector

fn clone(&self) -> IrqSelector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IrqSelector

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

Formats the value using the given formatter.

impl Hash for IrqSelector

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for IrqSelector

fn eq(&self, other: &IrqSelector) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for IrqSelector

impl StructuralPartialEq for IrqSelector