examples/device_list.c

/*
 * Copyright (c) 2004 Topspin Communications.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#if HAVE_CONFIG_H
#  include <config.h>
#endif /* HAVE_CONFIG_H */

#include <stdio.h>

#include <endian.h>
#include <byteswap.h>

#include <infiniband/verbs.h>
#include <infiniband/arch.h>

int main(int argc, char *argv[])
{
	struct ibv_device **dev_list;
	int num_devices, i;

	dev_list = ibv_get_device_list(&num_devices);
	if (!dev_list) {
		perror("Failed to get IB devices list");
		return 1;
	}

	printf("    %-16s\t   node GUID\n", "device");
	printf("    %-16s\t----------------\n", "------");

	for (i = 0; i < num_devices; ++i) {
		printf("    %-16s\t%016llx\n",
		       ibv_get_device_name(dev_list[i]),
		       (unsigned long long) ntohll(ibv_get_device_guid(dev_list[i])));
	}

	ibv_free_device_list(dev_list);

	return 0;
}