pingpong.c revision 331769 
1/*
2 * Copyright (c) 2006 Cisco Systems.  All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses.  You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 *     Redistribution and use in source and binary forms, with or
11 *     without modification, are permitted provided that the following
12 *     conditions are met:
13 *
14 *      - Redistributions of source code must retain the above
15 *        copyright notice, this list of conditions and the following
16 *        disclaimer.
17 *
18 *      - Redistributions in binary form must reproduce the above
19 *        copyright notice, this list of conditions and the following
20 *        disclaimer in the documentation and/or other materials
21 *        provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#include "pingpong.h"
34#include <infiniband/endian.h>
35#include <stdlib.h>
36#include <stdio.h>
37#include <string.h>
38
39enum ibv_mtu pp_mtu_to_enum(int mtu)
40{
41	switch (mtu) {
42	case 256:  return IBV_MTU_256;
43	case 512:  return IBV_MTU_512;
44	case 1024: return IBV_MTU_1024;
45	case 2048: return IBV_MTU_2048;
46	case 4096: return IBV_MTU_4096;
47	default:   return 0;
48	}
49}
50
51int pp_get_port_info(struct ibv_context *context, int port,
52		     struct ibv_port_attr *attr)
53{
54	return ibv_query_port(context, port, attr);
55}
56
57void wire_gid_to_gid(const char *wgid, union ibv_gid *gid)
58{
59	char tmp[9];
60	__be32 v32;
61	int i;
62	uint32_t tmp_gid[4];
63
64	for (tmp[8] = 0, i = 0; i < 4; ++i) {
65		memcpy(tmp, wgid + i * 8, 8);
66		sscanf(tmp, "%x", &v32);
67		tmp_gid[i] = be32toh(v32);
68	}
69	memcpy(gid, tmp_gid, sizeof(*gid));
70}
71
72void gid_to_wire_gid(const union ibv_gid *gid, char wgid[])
73{
74	uint32_t tmp_gid[4];
75	int i;
76
77	memcpy(tmp_gid, gid, sizeof(tmp_gid));
78	for (i = 0; i < 4; ++i)
79		sprintf(&wgid[i * 8], "%08x", htobe32(tmp_gid[i]));
80}
81