Function eth_dev_null_create

dpdk/drivers/net/null/rte_eth_null.c:535–607

};

static int
eth_dev_null_create(struct rte_vdev_device *dev, struct pmd_options *args)
{
	const unsigned int nb_rx_queues = 1;
	const unsigned int nb_tx_queues = 1;
	struct rte_eth_dev_data *data;
	struct pmd_internals *internals = NULL;
	struct rte_eth_dev *eth_dev = NULL;

	static const uint8_t default_rss_key[40] = {
		0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2, 0x41, 0x67, 0x25, 0x3D,
		0x43, 0xA3, 0x8F, 0xB0, 0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4,
		0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C, 0x6A, 0x42, 0xB7, 0x3B,
		0xBE, 0xAC, 0x01, 0xFA
	};

	if (dev->device.numa_node == SOCKET_ID_ANY)
		dev->device.numa_node = rte_socket_id();

	PMD_LOG(INFO, "Creating null ethdev on numa socket %u",
		dev->device.numa_node);

	eth_dev = rte_eth_vdev_allocate(dev, sizeof(*internals));
	if (!eth_dev)
		return -ENOMEM;

	/* now put it all together
	 * - store queue data in internals,
	 * - store numa_node info in ethdev data
	 * - point eth_dev_data to internals
	 * - and point eth_dev structure to new eth_dev_data structure
	 */
	/* NOTE: we'll replace the data element, of originally allocated eth_dev
	 * so the nulls are local per-process */

	internals = eth_dev->data->dev_private;
	internals->packet_size = args->packet_size;
	internals->packet_copy = args->packet_copy;
	internals->no_rx = args->no_rx;
	internals->port_id = eth_dev->data->port_id;
	rte_eth_random_addr(internals->eth_addr.addr_bytes);

	internals->flow_type_rss_offloads =  RTE_ETH_RSS_PROTO_MASK;
	internals->reta_size = RTE_DIM(internals->reta_conf) * RTE_ETH_RETA_GROUP_SIZE;

	rte_memcpy(internals->rss_key, default_rss_key, 40);

	data = eth_dev->data;
	data->nb_rx_queues = (uint16_t)nb_rx_queues;
	data->nb_tx_queues = (uint16_t)nb_tx_queues;
	data->dev_link = pmd_link;
	data->mac_addrs = &internals->eth_addr;
	data->promiscuous = 1;
	data->all_multicast = 1;
	data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;

	eth_dev->dev_ops = &ops;