Function rte_pmd_null_probe

dpdk/drivers/net/null/rte_eth_null.c:661–748

}

static int
rte_pmd_null_probe(struct rte_vdev_device *dev)
{
	const char *name, *params;
	struct pmd_options args = {
		.packet_copy = default_packet_copy,
		.packet_size = default_packet_size,
		.no_rx = default_no_rx,
	};
	struct rte_kvargs *kvlist = NULL;
	struct rte_eth_dev *eth_dev;
	int ret;

	if (!dev)
		return -EINVAL;

	name = rte_vdev_device_name(dev);
	params = rte_vdev_device_args(dev);
	PMD_LOG(INFO, "Initializing pmd_null for %s", name);

	if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
		struct pmd_internals *internals;
		eth_dev = rte_eth_dev_attach_secondary(name);
		if (!eth_dev) {
			PMD_LOG(ERR, "Failed to probe %s", name);
			return -1;
		}
		/* TODO: request info from primary to set up Rx and Tx */
		eth_dev->dev_ops = &ops;
		eth_dev->device = &dev->device;
		internals = eth_dev->data->dev_private;
		if (internals->packet_copy) {
			eth_dev->rx_pkt_burst = eth_null_copy_rx;
			eth_dev->tx_pkt_burst = eth_null_copy_tx;
		} else if (internals->no_rx) {
			eth_dev->rx_pkt_burst = eth_null_no_rx;
			eth_dev->tx_pkt_burst = eth_null_tx;
		} else {
			eth_dev->rx_pkt_burst = eth_null_rx;
			eth_dev->tx_pkt_burst = eth_null_tx;
		}
		rte_eth_dev_probing_finish(eth_dev);
		return 0;
	}

	if (params != NULL) {
		kvlist = rte_kvargs_parse(params, valid_arguments);
		if (kvlist == NULL)
			return -1;

		ret = rte_kvargs_process(kvlist,
				ETH_NULL_PACKET_SIZE_ARG,
				&get_packet_size_arg, &args.packet_size);
		if (ret < 0)
			goto free_kvlist;


		ret = rte_kvargs_process(kvlist,