main.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2014 Intel Corporation
 */

#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <sys/queue.h>
#include <rte_memory.h>
#include <rte_launch.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_debug.h>
#include <rte_ethdev.h>
#include <rte_dev.h>

const char usage_info[] = "usage: dpdk-devname\n";

/*a tiny application to print dpdk device and port id info */
int main(int argc, char **argv)
{
	int ret;
	/* Initialization of Environment Abstraction Layer (EAL). */
	ret = rte_eal_init(argc, argv);
	if (ret < 0)
		rte_panic("Cannot init EAL\n");
	/* >8 End of initialization of Environment Abstraction Layer */

	struct rte_eth_dev_info device_info;
	char device_name_by_port[RTE_ETH_NAME_MAX_LEN] = {0};
	for (uint16_t portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
	{
		if (!rte_eth_dev_is_valid_port(portid))
			continue;

		ret = rte_eth_dev_info_get(portid, &device_info);
		if (ret < 0)
		{
			fprintf(stderr,
					"Invalid or no info for port %i, err: %s\n",
					portid, rte_strerror(ret));
			continue;
		}
		ret = rte_eth_dev_get_name_by_port(portid, device_name_by_port);
		if (ret < 0)
		{
			fprintf(stderr,
					"No name info returned for port %i, err: %s\n",
					portid, rte_strerror(ret));
			continue;
		}
		struct rte_eth_dev_owner device_owner;
		ret = rte_eth_dev_owner_get(portid, &device_owner);
		if (ret < 0)
		{
			fprintf(stderr, "Could not get ownership for port %i (%s)\n",
					portid, device_name_by_port);
			memset(&device_owner, 0, sizeof(struct rte_eth_dev_owner));
		}
		
		if (!device_owner.name[0])
			strcpy(device_owner.name, "null");
		
		struct rte_ether_addr macaddr;
		ret = rte_eth_macaddr_get(portid, &macaddr);
		if (ret < 0)
		{
			fprintf(stderr, "Could not get macaddr info for port %i (%s)\n",
					portid, device_name_by_port);
			memset(&macaddr, 0, sizeof(struct rte_ether_addr));
		}
		printf("dpdk-devname found port=%i "
			   "driver=%s "
			   "get_name_by_port_name=%s "
			   "owner_id=0x%016lx "
			   "owner_name=%s "
			   "macaddr=%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\n",
			   portid,
			   device_info.driver_name,
			   device_name_by_port,
			   device_owner.id,
			   device_owner.name,
			   macaddr.addr_bytes[0],
			   macaddr.addr_bytes[1],
			   macaddr.addr_bytes[2],
			   macaddr.addr_bytes[3],
			   macaddr.addr_bytes[4],
			   macaddr.addr_bytes[5]
		);
	}

	/* clean up the EAL */
	rte_eal_cleanup();

	return 0;
}