Struct QueueConfig 

pub struct QueueConfig {
    pub desc_addr: u64,
    pub avail_addr: u64,
    pub used_addr: u64,
    pub size: u16,
    pub ready: bool,
    pub gpa_base: u64,
}

Configuration for a single virtqueue, as set by the guest driver via MMIO transport writes.

All addresses are guest physical addresses (GPAs). The memory slice passed to VirtioDevice::process_queue starts at gpa_base, so devices must subtract gpa_base to convert a GPA to a slice index.

Device-specific state (e.g. the vsock host connection manager) is not plumbed through this struct — devices that need such state hold it directly via their own bind_* setters.

Fields

desc_addr: u64

Guest physical address of the descriptor table.

avail_addr: u64

Guest physical address of the available (driver) ring.

used_addr: u64

Guest physical address of the used (device) ring.

size: u16

Queue size (number of descriptors).

ready: bool

Whether the queue is ready.

gpa_base: u64

GPA of the start of the guest memory slice. Devices must subtract this from descriptor addresses to get slice offsets.

Trait Implementations

impl Debug for QueueConfig

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

Formats the value using the given formatter.

impl Default for QueueConfig

fn default() -> QueueConfig

Returns the “default value” for a type.