libibverbs/examples/pingpong.c

/*
 * Copyright (c) 2006 Cisco Systems.  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.
 */

#include "pingpong.h"
#include <endian.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

enum ibv_mtu pp_mtu_to_enum(int mtu)
{
	switch (mtu) {
	case 256:  return IBV_MTU_256;
	case 512:  return IBV_MTU_512;
	case 1024: return IBV_MTU_1024;
	case 2048: return IBV_MTU_2048;
	case 4096: return IBV_MTU_4096;
	default:   return 0;
	}
}

int pp_get_port_info(struct ibv_context *context, int port,
		     struct ibv_port_attr *attr)
{
	return ibv_query_port(context, port, attr);
}

void wire_gid_to_gid(const char *wgid, union ibv_gid *gid)
{
	char tmp[9];
	__be32 v32;
	int i;
	uint32_t tmp_gid[4];

	for (tmp[8] = 0, i = 0; i < 4; ++i) {
		memcpy(tmp, wgid + i * 8, 8);
		sscanf(tmp, "%x", &v32);
		tmp_gid[i] = be32toh(v32);
	}
	memcpy(gid, tmp_gid, sizeof(*gid));
}

void gid_to_wire_gid(const union ibv_gid *gid, char wgid[])
{
	uint32_t tmp_gid[4];
	int i;

	memcpy(tmp_gid, gid, sizeof(tmp_gid));
	for (i = 0; i < 4; ++i)
		sprintf(&wgid[i * 8], "%08x", htobe32(tmp_gid[i]));
}