Struct VirtQueueUsed 

#[repr(C)]
pub struct VirtQueueUsed {
    pub flags: u16,
    pub idx: u16,
}

VirtIO used ring header structure.

This structure represents the memory layout of the used ring header in guest memory according to the VirtIO specification. It is a simple C-compatible data structure that directly maps to guest memory.

The complete used ring in guest memory consists of:

1. This header structure (VirtQueueUsed)
2. An array of used elements (ring[\queue_size], each VirtqUsedElem)
3. An optional avail_event field (if VIRTIO_F_EVENT_IDX is negotiated)

This structure is used by UsedRing to read/write the header portion of the used ring through guest memory accessor.

Fields

flags: u16

Flags

idx: u16

Index of the next used element

Implementations

impl VirtQueueUsed

pub fn new() -> Self

Create a new used ring header

pub fn no_notify(&self) -> bool

Check if notifications are disabled

pub fn set_no_notify(&mut self, no_notify: bool)

Set the no notify flag

Trait Implementations

impl Clone for VirtQueueUsed

fn clone(&self) -> VirtQueueUsed

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VirtQueueUsed

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

Formats the value using the given formatter.

impl Default for VirtQueueUsed

fn default() -> VirtQueueUsed

Returns the “default value” for a type.

impl Copy for VirtQueueUsed