Struct virtio_driver::virtqueue::VirtqueueLayout

pub struct VirtqueueLayout {
    pub num_queues: usize,
    pub avail_offset: usize,
    pub used_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 Table starts from offset 0
• The Virtqueue Available Ring starts at avail_offset
• The Virtqueue Used Ring starts at used_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

avail_offset: usize

used_offset: usize

req_offset: usize

end_offset: usize

Implementations

impl VirtqueueLayout

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