Function rte_vhost_get_vring_base

dpdk/lib/vhost/vhost.c:1663–1691

}

int
rte_vhost_get_vring_base(int vid, uint16_t queue_id,
		uint16_t *last_avail_idx, uint16_t *last_used_idx)
{
	struct vhost_virtqueue *vq;
	struct virtio_net *dev = get_device(vid);

	if (dev == NULL || last_avail_idx == NULL || last_used_idx == NULL)
		return -1;

	if (queue_id >= VHOST_MAX_VRING)
		return -1;

	vq = dev->virtqueue[queue_id];
	if (!vq)
		return -1;

	if (vq_is_packed(dev)) {
		*last_avail_idx = (vq->avail_wrap_counter << 15) |
				  vq->last_avail_idx;
		*last_used_idx = (vq->used_wrap_counter << 15) |
				 vq->last_used_idx;
	} else {
		*last_avail_idx = vq->last_avail_idx;
		*last_used_idx = vq->last_used_idx;
	}

	return 0;
}

int
rte_vhost_set_vring_base(int vid, uint16_t queue_id,