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