Struct VirtqueueLayout

pub struct VirtqueueLayout {
    pub num_queues: usize,
    pub driver_area_offset: usize,
    pub device_area_offset: usize,
    pub req_offset: usize,
    pub end_offset: usize,
}

A description how the memory passed for each virtqueue is split into individual regions.

• The Virtqueue Descriptor Area starts from offset 0
• The Virtqueue Driver Area (Available Ring for split virtqueue) starts at driver_area_offset
• The Virtqueue Device Area (Used Ring for split virtqueue) starts at device_area_offset
• Driver-specific per request data that needs to be shared with the device (e.g. request headers or status bytes) start at req_offset

Fields

num_queues: usize

driver_area_offset: usize

device_area_offset: usize

req_offset: usize

end_offset: usize

Implementations

impl VirtqueueLayout

pub fn new<R>( num_queues: usize, queue_size: usize, features: VirtioFeatureFlags, ) -> Result<Self, Error>