Function rte_eth_dev_create

dpdk/lib/ethdev/ethdev_driver.c:281–354

}

int
rte_eth_dev_create(struct rte_device *device, const char *name,
	size_t priv_data_size,
	ethdev_bus_specific_init ethdev_bus_specific_init,
	void *bus_init_params,
	ethdev_init_t ethdev_init, void *init_params)
{
	struct rte_eth_dev *ethdev;
	int retval;

	if (*ethdev_init == NULL)
		return -EINVAL;

	if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
		ethdev = rte_eth_dev_allocate(name);
		if (!ethdev)
			return -ENODEV;

		if (priv_data_size) {
			/* try alloc private data on device-local node. */
			ethdev->data->dev_private = rte_zmalloc_socket(
				name, priv_data_size, RTE_CACHE_LINE_SIZE,
				device->numa_node);

			/* fall back to alloc on any socket on failure */
			if (ethdev->data->dev_private == NULL) {
				ethdev->data->dev_private = rte_zmalloc(name,
						priv_data_size, RTE_CACHE_LINE_SIZE);

				if (ethdev->data->dev_private == NULL) {
					RTE_ETHDEV_LOG(ERR, "failed to allocate private data\n");
					retval = -ENOMEM;
					goto probe_failed;
				}
				/* got memory, but not local, so issue warning */
				RTE_ETHDEV_LOG(WARNING,
					       "Private data for ethdev '%s' not allocated on local NUMA node %d\n",
					       device->name, device->numa_node);
			}
		}
	} else {
		ethdev = rte_eth_dev_attach_secondary(name);
		if (!ethdev) {
			RTE_ETHDEV_LOG(ERR,
				"secondary process attach failed, ethdev doesn't exist\n");
			return  -ENODEV;
		}
	}

	ethdev->device = device;

	if (ethdev_bus_specific_init) {
		retval = ethdev_bus_specific_init(ethdev, bus_init_params);
		if (retval) {
			RTE_ETHDEV_LOG(ERR,
				"ethdev bus specific initialisation failed\n");
			goto probe_failed;
		}