Function virtio_net_ctrl_handle

dpdk/lib/vhost/virtio_net_ctrl.c:244–282

}

int
virtio_net_ctrl_handle(struct virtio_net *dev)
{
	int ret = 0;

	if (dev->features & (1ULL << VIRTIO_F_RING_PACKED)) {
		VHOST_LOG_CONFIG(dev->ifname, ERR, "Packed ring not supported yet\n");
		return -1;
	}

	if (!dev->cvq) {
		VHOST_LOG_CONFIG(dev->ifname, ERR, "missing control queue\n");
		return -1;
	}

	rte_rwlock_read_lock(&dev->cvq->access_lock);
	vhost_user_iotlb_rd_lock(dev->cvq);

	while (1) {
		struct virtio_net_ctrl_elem ctrl_elem;

		memset(&ctrl_elem, 0, sizeof(struct virtio_net_ctrl_elem));

		ret = virtio_net_ctrl_pop(dev, dev->cvq, &ctrl_elem);
		if (ret <= 0)
			break;

		*ctrl_elem.desc_ack = virtio_net_ctrl_handle_req(dev, ctrl_elem.ctrl_req);

		ret = virtio_net_ctrl_push(dev, &ctrl_elem);
		if (ret < 0)
			break;
	}

	vhost_user_iotlb_rd_unlock(dev->cvq);
	rte_rwlock_read_unlock(&dev->cvq->access_lock);

	return ret;
}