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Per Lidenb97bf3f2006-01-02 19:04:38 +01001/*
2 * net/tipc/netlink.c: TIPC configuration handling
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09003 *
Richard Alpe0655f6a2014-11-20 10:29:07 +01004 * Copyright (c) 2005-2006, 2014, Ericsson AB
Allan Stephens59f0c452008-05-21 14:52:30 -07005 * Copyright (c) 2005-2007, Wind River Systems
Per Lidenb97bf3f2006-01-02 19:04:38 +01006 * All rights reserved.
7 *
Per Liden9ea1fd32006-01-11 13:30:43 +01008 * Redistribution and use in source and binary forms, with or without
Per Lidenb97bf3f2006-01-02 19:04:38 +01009 * modification, are permitted provided that the following conditions are met:
10 *
Per Liden9ea1fd32006-01-11 13:30:43 +010011 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
Per Lidenb97bf3f2006-01-02 19:04:38 +010019 *
Per Liden9ea1fd32006-01-11 13:30:43 +010020 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
Per Lidenb97bf3f2006-01-02 19:04:38 +010034 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#include "core.h"
Richard Alpe34b78a122014-11-20 10:29:10 +010038#include "socket.h"
Richard Alpe15931232014-11-20 10:29:20 +010039#include "name_table.h"
Richard Alpe0655f6a2014-11-20 10:29:07 +010040#include "bearer.h"
Richard Alpe7be57fc2014-11-20 10:29:12 +010041#include "link.h"
Richard Alpe3e4b6ab2014-11-20 10:29:17 +010042#include "node.h"
Richard Alpefd3cf2a2014-11-20 10:29:18 +010043#include "net.h"
Per Lidenb97bf3f2006-01-02 19:04:38 +010044#include <net/genetlink.h>
45
Richard Alpe0655f6a2014-11-20 10:29:07 +010046static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = {
47 [TIPC_NLA_UNSPEC] = { .type = NLA_UNSPEC, },
48 [TIPC_NLA_BEARER] = { .type = NLA_NESTED, },
Richard Alpe34b78a122014-11-20 10:29:10 +010049 [TIPC_NLA_SOCK] = { .type = NLA_NESTED, },
Richard Alpe7be57fc2014-11-20 10:29:12 +010050 [TIPC_NLA_PUBL] = { .type = NLA_NESTED, },
51 [TIPC_NLA_LINK] = { .type = NLA_NESTED, },
Richard Alpe46f15c62014-11-20 10:29:15 +010052 [TIPC_NLA_MEDIA] = { .type = NLA_NESTED, },
Richard Alpefd3cf2a2014-11-20 10:29:18 +010053 [TIPC_NLA_NODE] = { .type = NLA_NESTED, },
Richard Alpe15931232014-11-20 10:29:20 +010054 [TIPC_NLA_NET] = { .type = NLA_NESTED, },
55 [TIPC_NLA_NAME_TABLE] = { .type = NLA_NESTED, }
Richard Alpe0655f6a2014-11-20 10:29:07 +010056};
57
Richard Alpe0655f6a2014-11-20 10:29:07 +010058/* Users of the legacy API (tipc-config) can't handle that we add operations,
59 * so we have a separate genl handling for the new API.
60 */
Richard Alpebfb3e5d2015-02-09 09:50:03 +010061struct genl_family tipc_genl_family = {
Richard Alpe0655f6a2014-11-20 10:29:07 +010062 .id = GENL_ID_GENERATE,
63 .name = TIPC_GENL_V2_NAME,
64 .version = TIPC_GENL_V2_VERSION,
65 .hdrsize = 0,
66 .maxattr = TIPC_NLA_MAX,
Ying Xued49e2042015-01-09 15:27:13 +080067 .netnsok = true,
Richard Alpe0655f6a2014-11-20 10:29:07 +010068};
69
70static const struct genl_ops tipc_genl_v2_ops[] = {
71 {
72 .cmd = TIPC_NL_BEARER_DISABLE,
73 .doit = tipc_nl_bearer_disable,
74 .policy = tipc_nl_policy,
75 },
76 {
77 .cmd = TIPC_NL_BEARER_ENABLE,
78 .doit = tipc_nl_bearer_enable,
79 .policy = tipc_nl_policy,
Richard Alpe35b9dd72014-11-20 10:29:08 +010080 },
81 {
82 .cmd = TIPC_NL_BEARER_GET,
83 .doit = tipc_nl_bearer_get,
84 .dumpit = tipc_nl_bearer_dump,
85 .policy = tipc_nl_policy,
Richard Alpe315c00b2014-11-20 10:29:09 +010086 },
87 {
88 .cmd = TIPC_NL_BEARER_SET,
89 .doit = tipc_nl_bearer_set,
90 .policy = tipc_nl_policy,
Richard Alpe34b78a122014-11-20 10:29:10 +010091 },
92 {
93 .cmd = TIPC_NL_SOCK_GET,
94 .dumpit = tipc_nl_sk_dump,
95 .policy = tipc_nl_policy,
Richard Alpe1a1a1432014-11-20 10:29:11 +010096 },
97 {
98 .cmd = TIPC_NL_PUBL_GET,
99 .dumpit = tipc_nl_publ_dump,
100 .policy = tipc_nl_policy,
Richard Alpe7be57fc2014-11-20 10:29:12 +0100101 },
102 {
103 .cmd = TIPC_NL_LINK_GET,
Jon Paul Maloy5be9c082015-11-19 14:30:45 -0500104 .doit = tipc_nl_node_get_link,
Richard Alpe7be57fc2014-11-20 10:29:12 +0100105 .dumpit = tipc_nl_link_dump,
106 .policy = tipc_nl_policy,
Richard Alpef96ce7a2014-11-20 10:29:13 +0100107 },
108 {
109 .cmd = TIPC_NL_LINK_SET,
Jon Paul Maloy5be9c082015-11-19 14:30:45 -0500110 .doit = tipc_nl_node_set_link,
Richard Alpef96ce7a2014-11-20 10:29:13 +0100111 .policy = tipc_nl_policy,
Richard Alpeae363422014-11-20 10:29:14 +0100112 },
113 {
114 .cmd = TIPC_NL_LINK_RESET_STATS,
Jon Paul Maloy5be9c082015-11-19 14:30:45 -0500115 .doit = tipc_nl_node_reset_link_stats,
Richard Alpeae363422014-11-20 10:29:14 +0100116 .policy = tipc_nl_policy,
Richard Alpe46f15c62014-11-20 10:29:15 +0100117 },
118 {
119 .cmd = TIPC_NL_MEDIA_GET,
120 .doit = tipc_nl_media_get,
121 .dumpit = tipc_nl_media_dump,
122 .policy = tipc_nl_policy,
Richard Alpe1e554172014-11-20 10:29:16 +0100123 },
124 {
125 .cmd = TIPC_NL_MEDIA_SET,
126 .doit = tipc_nl_media_set,
127 .policy = tipc_nl_policy,
Richard Alpe3e4b6ab2014-11-20 10:29:17 +0100128 },
129 {
130 .cmd = TIPC_NL_NODE_GET,
131 .dumpit = tipc_nl_node_dump,
132 .policy = tipc_nl_policy,
Richard Alpefd3cf2a2014-11-20 10:29:18 +0100133 },
134 {
135 .cmd = TIPC_NL_NET_GET,
136 .dumpit = tipc_nl_net_dump,
137 .policy = tipc_nl_policy,
Richard Alpe27c21412014-11-20 10:29:19 +0100138 },
139 {
140 .cmd = TIPC_NL_NET_SET,
141 .doit = tipc_nl_net_set,
142 .policy = tipc_nl_policy,
Richard Alpe15931232014-11-20 10:29:20 +0100143 },
144 {
145 .cmd = TIPC_NL_NAME_TABLE_GET,
146 .dumpit = tipc_nl_name_table_dump,
147 .policy = tipc_nl_policy,
Richard Alpe0655f6a2014-11-20 10:29:07 +0100148 }
149};
150
Richard Alpe1a1a1432014-11-20 10:29:11 +0100151int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr)
152{
Richard Alpebfb3e5d2015-02-09 09:50:03 +0100153 u32 maxattr = tipc_genl_family.maxattr;
Richard Alpe1a1a1432014-11-20 10:29:11 +0100154
Richard Alpebfb3e5d2015-02-09 09:50:03 +0100155 *attr = tipc_genl_family.attrbuf;
Richard Alpe1a1a1432014-11-20 10:29:11 +0100156 if (!*attr)
157 return -EOPNOTSUPP;
158
159 return nlmsg_parse(nlh, GENL_HDRLEN, *attr, maxattr, tipc_nl_policy);
160}
161
Per Liden4323add2006-01-18 00:38:21 +0100162int tipc_netlink_start(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100163{
Michał Mirosławacb0a202009-05-21 10:34:05 +0000164 int res;
Jon Maloyb70e4f42006-01-10 18:54:24 +0000165
Richard Alpebfb3e5d2015-02-09 09:50:03 +0100166 res = genl_register_family_with_ops(&tipc_genl_family,
Richard Alpe0655f6a2014-11-20 10:29:07 +0100167 tipc_genl_v2_ops);
168 if (res) {
Erik Hugne2cf8aa12012-06-29 00:16:37 -0400169 pr_err("Failed to register netlink interface\n");
Michał Mirosławacb0a202009-05-21 10:34:05 +0000170 return res;
171 }
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900172 return 0;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100173}
174
Per Liden4323add2006-01-18 00:38:21 +0100175void tipc_netlink_stop(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100176{
Michał Mirosławacb0a202009-05-21 10:34:05 +0000177 genl_unregister_family(&tipc_genl_family);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100178}