1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * net/tipc/ib_media.c: Infiniband bearer support for TIPC
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (c) 2013 Patrick McHardy <kaber@trash.net>
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Based on eth_media.c, which carries the following copyright notice:
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * Copyright (c) 2001-2007, Ericsson AB
9*4882a593Smuzhiyun * Copyright (c) 2005-2008, 2011, Wind River Systems
10*4882a593Smuzhiyun * All rights reserved.
11*4882a593Smuzhiyun *
12*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or without
13*4882a593Smuzhiyun * modification, are permitted provided that the following conditions are met:
14*4882a593Smuzhiyun *
15*4882a593Smuzhiyun * 1. Redistributions of source code must retain the above copyright
16*4882a593Smuzhiyun * notice, this list of conditions and the following disclaimer.
17*4882a593Smuzhiyun * 2. Redistributions in binary form must reproduce the above copyright
18*4882a593Smuzhiyun * notice, this list of conditions and the following disclaimer in the
19*4882a593Smuzhiyun * documentation and/or other materials provided with the distribution.
20*4882a593Smuzhiyun * 3. Neither the names of the copyright holders nor the names of its
21*4882a593Smuzhiyun * contributors may be used to endorse or promote products derived from
22*4882a593Smuzhiyun * this software without specific prior written permission.
23*4882a593Smuzhiyun *
24*4882a593Smuzhiyun * Alternatively, this software may be distributed under the terms of the
25*4882a593Smuzhiyun * GNU General Public License ("GPL") version 2 as published by the Free
26*4882a593Smuzhiyun * Software Foundation.
27*4882a593Smuzhiyun *
28*4882a593Smuzhiyun * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
29*4882a593Smuzhiyun * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30*4882a593Smuzhiyun * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31*4882a593Smuzhiyun * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
32*4882a593Smuzhiyun * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33*4882a593Smuzhiyun * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34*4882a593Smuzhiyun * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35*4882a593Smuzhiyun * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36*4882a593Smuzhiyun * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37*4882a593Smuzhiyun * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38*4882a593Smuzhiyun * POSSIBILITY OF SUCH DAMAGE.
39*4882a593Smuzhiyun */
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun #include <linux/if_infiniband.h>
42*4882a593Smuzhiyun #include "core.h"
43*4882a593Smuzhiyun #include "bearer.h"
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun #define TIPC_MAX_IB_LINK_WIN 500
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun /* convert InfiniBand address (media address format) media address to string */
tipc_ib_addr2str(struct tipc_media_addr * a,char * str_buf,int str_size)48*4882a593Smuzhiyun static int tipc_ib_addr2str(struct tipc_media_addr *a, char *str_buf,
49*4882a593Smuzhiyun int str_size)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun if (str_size < 60) /* 60 = 19 * strlen("xx:") + strlen("xx\0") */
52*4882a593Smuzhiyun return 1;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun sprintf(str_buf, "%20phC", a->value);
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun return 0;
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun /* Convert from media address format to discovery message addr format */
tipc_ib_addr2msg(char * msg,struct tipc_media_addr * addr)60*4882a593Smuzhiyun static int tipc_ib_addr2msg(char *msg, struct tipc_media_addr *addr)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun memset(msg, 0, TIPC_MEDIA_INFO_SIZE);
63*4882a593Smuzhiyun memcpy(msg, addr->value, INFINIBAND_ALEN);
64*4882a593Smuzhiyun return 0;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun /* Convert raw InfiniBand address format to media addr format */
tipc_ib_raw2addr(struct tipc_bearer * b,struct tipc_media_addr * addr,char * msg)68*4882a593Smuzhiyun static int tipc_ib_raw2addr(struct tipc_bearer *b,
69*4882a593Smuzhiyun struct tipc_media_addr *addr,
70*4882a593Smuzhiyun char *msg)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun memset(addr, 0, sizeof(*addr));
73*4882a593Smuzhiyun memcpy(addr->value, msg, INFINIBAND_ALEN);
74*4882a593Smuzhiyun addr->media_id = TIPC_MEDIA_TYPE_IB;
75*4882a593Smuzhiyun addr->broadcast = !memcmp(msg, b->bcast_addr.value,
76*4882a593Smuzhiyun INFINIBAND_ALEN);
77*4882a593Smuzhiyun return 0;
78*4882a593Smuzhiyun }
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun /* Convert discovery msg addr format to InfiniBand media addr format */
tipc_ib_msg2addr(struct tipc_bearer * b,struct tipc_media_addr * addr,char * msg)81*4882a593Smuzhiyun static int tipc_ib_msg2addr(struct tipc_bearer *b,
82*4882a593Smuzhiyun struct tipc_media_addr *addr,
83*4882a593Smuzhiyun char *msg)
84*4882a593Smuzhiyun {
85*4882a593Smuzhiyun return tipc_ib_raw2addr(b, addr, msg);
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun /* InfiniBand media registration info */
89*4882a593Smuzhiyun struct tipc_media ib_media_info = {
90*4882a593Smuzhiyun .send_msg = tipc_l2_send_msg,
91*4882a593Smuzhiyun .enable_media = tipc_enable_l2_media,
92*4882a593Smuzhiyun .disable_media = tipc_disable_l2_media,
93*4882a593Smuzhiyun .addr2str = tipc_ib_addr2str,
94*4882a593Smuzhiyun .addr2msg = tipc_ib_addr2msg,
95*4882a593Smuzhiyun .msg2addr = tipc_ib_msg2addr,
96*4882a593Smuzhiyun .raw2addr = tipc_ib_raw2addr,
97*4882a593Smuzhiyun .priority = TIPC_DEF_LINK_PRI,
98*4882a593Smuzhiyun .tolerance = TIPC_DEF_LINK_TOL,
99*4882a593Smuzhiyun .min_win = TIPC_DEF_LINK_WIN,
100*4882a593Smuzhiyun .max_win = TIPC_MAX_IB_LINK_WIN,
101*4882a593Smuzhiyun .type_id = TIPC_MEDIA_TYPE_IB,
102*4882a593Smuzhiyun .hwaddr_len = INFINIBAND_ALEN,
103*4882a593Smuzhiyun .name = "ib"
104*4882a593Smuzhiyun };
105