VIRTQUEUE_CALL
return VIRTQUEUE_CALL(vq, add, sgs, total_sg,
return VIRTQUEUE_CALL(vq, kick_prepare);
return VIRTQUEUE_CALL(vq, get, len, ctx);
return VIRTQUEUE_CALL(vq, enable_cb_prepare);
return VIRTQUEUE_CALL(vq, poll, last_used_idx);
return VIRTQUEUE_CALL(vq, enable_cb_delayed);
return VIRTQUEUE_CALL(vq, detach_unused_buf);
return VIRTQUEUE_CALL(vq, more_used);
err = VIRTQUEUE_CALL(vq, resize, num);