Function vhost_driver_setup

dpdk/drivers/net/vhost/rte_eth_vhost.c:976–1045

};

static int
vhost_driver_setup(struct rte_eth_dev *eth_dev)
{
	struct pmd_internal *internal = eth_dev->data->dev_private;
	struct internal_list *list = NULL;
	struct rte_vhost_vring_state *vring_state = NULL;
	unsigned int numa_node = eth_dev->device->numa_node;
	const char *name = eth_dev->device->name;

	/* Don't try to setup again if it has already been done. */
	list = find_internal_resource(internal->iface_name);
	if (list)
		return 0;

	list = rte_zmalloc_socket(name, sizeof(*list), 0, numa_node);
	if (list == NULL)
		return -1;

	vring_state = rte_zmalloc_socket(name, sizeof(*vring_state),
					 0, numa_node);
	if (vring_state == NULL)
		goto free_list;

	list->eth_dev = eth_dev;
	pthread_mutex_lock(&internal_list_lock);
	TAILQ_INSERT_TAIL(&internal_list, list, next);
	pthread_mutex_unlock(&internal_list_lock);

	rte_spinlock_init(&vring_state->lock);
	vring_states[eth_dev->data->port_id] = vring_state;

	if (rte_vhost_driver_register(internal->iface_name, internal->flags))
		goto list_remove;

	if (internal->disable_flags) {
		if (rte_vhost_driver_disable_features(internal->iface_name,
						      internal->disable_flags))
			goto drv_unreg;
	}

	if (rte_vhost_driver_set_max_queue_num(internal->iface_name, internal->max_queues))
		goto drv_unreg;

	if (rte_vhost_driver_callback_register(internal->iface_name,
					       &vhost_ops) < 0) {
		VHOST_LOG(ERR, "Can't register callbacks\n");
		goto drv_unreg;
	}

	if (rte_vhost_driver_start(internal->iface_name) < 0) {
		VHOST_LOG(ERR, "Failed to start driver for %s\n",
			  internal->iface_name);
		goto drv_unreg;
	}

	return 0;

drv_unreg: