Function rte_vhost_async_channel_unregister

dpdk/lib/vhost/vhost.c:1899–1943

}

int
rte_vhost_async_channel_unregister(int vid, uint16_t queue_id)
{
	struct vhost_virtqueue *vq;
	struct virtio_net *dev = get_device(vid);
	int ret = -1;

	if (dev == NULL)
		return ret;

	if (queue_id >= VHOST_MAX_VRING)
		return ret;

	vq = dev->virtqueue[queue_id];

	if (vq == NULL)
		return ret;

	if (rte_rwlock_write_trylock(&vq->access_lock)) {
		VHOST_LOG_CONFIG(dev->ifname, ERR,
			"failed to unregister async channel, virtqueue busy.\n");
		return ret;
	}

	if (unlikely(!vq->access_ok)) {
		ret = -1;
		goto out_unlock;
	}

	if (!vq->async) {
		ret = 0;
	} else if (vq->async->pkts_inflight_n) {
		VHOST_LOG_CONFIG(dev->ifname, ERR, "failed to unregister async channel.\n");
		VHOST_LOG_CONFIG(dev->ifname, ERR,
			"inflight packets must be completed before unregistration.\n");
	} else {
		vhost_free_async_mem(vq);
		ret = 0;
	}

out_unlock:
	rte_rwlock_write_unlock(&vq->access_lock);

	return ret;
}

int
rte_vhost_async_channel_unregister_thread_unsafe(int vid, uint16_t queue_id)