xref: /freebsd/contrib/ofed/libibverbs/examples/pingpong.c (revision 0957b409a90fd597c1e9124cbaf3edd2b488f4ac)
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 
39 enum 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 
51 int 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 
57 void 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 
72 void 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