Linux kernel mirror (for testing)
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linux
1/*
2 * net/tipc/netlink.c: TIPC configuration handling
3 *
4 * Copyright (c) 2005-2006, 2014, Ericsson AB
5 * Copyright (c) 2005-2007, Wind River Systems
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 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.
19 *
20 * 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
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#include "core.h"
38#include "socket.h"
39#include "name_table.h"
40#include "bearer.h"
41#include "link.h"
42#include "node.h"
43#include "net.h"
44#include "udp_media.h"
45#include <net/genetlink.h>
46
47static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = {
48 [TIPC_NLA_UNSPEC] = { .type = NLA_UNSPEC, },
49 [TIPC_NLA_BEARER] = { .type = NLA_NESTED, },
50 [TIPC_NLA_SOCK] = { .type = NLA_NESTED, },
51 [TIPC_NLA_PUBL] = { .type = NLA_NESTED, },
52 [TIPC_NLA_LINK] = { .type = NLA_NESTED, },
53 [TIPC_NLA_MEDIA] = { .type = NLA_NESTED, },
54 [TIPC_NLA_NODE] = { .type = NLA_NESTED, },
55 [TIPC_NLA_NET] = { .type = NLA_NESTED, },
56 [TIPC_NLA_NAME_TABLE] = { .type = NLA_NESTED, },
57 [TIPC_NLA_MON] = { .type = NLA_NESTED, },
58};
59
60const struct nla_policy
61tipc_nl_name_table_policy[TIPC_NLA_NAME_TABLE_MAX + 1] = {
62 [TIPC_NLA_NAME_TABLE_UNSPEC] = { .type = NLA_UNSPEC },
63 [TIPC_NLA_NAME_TABLE_PUBL] = { .type = NLA_NESTED }
64};
65
66const struct nla_policy tipc_nl_monitor_policy[TIPC_NLA_MON_MAX + 1] = {
67 [TIPC_NLA_MON_UNSPEC] = { .type = NLA_UNSPEC },
68 [TIPC_NLA_MON_REF] = { .type = NLA_U32 },
69 [TIPC_NLA_MON_ACTIVATION_THRESHOLD] = { .type = NLA_U32 },
70};
71
72const struct nla_policy tipc_nl_sock_policy[TIPC_NLA_SOCK_MAX + 1] = {
73 [TIPC_NLA_SOCK_UNSPEC] = { .type = NLA_UNSPEC },
74 [TIPC_NLA_SOCK_ADDR] = { .type = NLA_U32 },
75 [TIPC_NLA_SOCK_REF] = { .type = NLA_U32 },
76 [TIPC_NLA_SOCK_CON] = { .type = NLA_NESTED },
77 [TIPC_NLA_SOCK_HAS_PUBL] = { .type = NLA_FLAG }
78};
79
80const struct nla_policy tipc_nl_net_policy[TIPC_NLA_NET_MAX + 1] = {
81 [TIPC_NLA_NET_UNSPEC] = { .type = NLA_UNSPEC },
82 [TIPC_NLA_NET_ID] = { .type = NLA_U32 },
83 [TIPC_NLA_NET_ADDR] = { .type = NLA_U32 },
84 [TIPC_NLA_NET_NODEID] = { .type = NLA_U64 },
85 [TIPC_NLA_NET_NODEID_W1] = { .type = NLA_U64 },
86 [TIPC_NLA_NET_ADDR_LEGACY] = { .type = NLA_FLAG }
87};
88
89const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = {
90 [TIPC_NLA_LINK_UNSPEC] = { .type = NLA_UNSPEC },
91 [TIPC_NLA_LINK_NAME] = { .type = NLA_STRING,
92 .len = TIPC_MAX_LINK_NAME },
93 [TIPC_NLA_LINK_MTU] = { .type = NLA_U32 },
94 [TIPC_NLA_LINK_BROADCAST] = { .type = NLA_FLAG },
95 [TIPC_NLA_LINK_UP] = { .type = NLA_FLAG },
96 [TIPC_NLA_LINK_ACTIVE] = { .type = NLA_FLAG },
97 [TIPC_NLA_LINK_PROP] = { .type = NLA_NESTED },
98 [TIPC_NLA_LINK_STATS] = { .type = NLA_NESTED },
99 [TIPC_NLA_LINK_RX] = { .type = NLA_U32 },
100 [TIPC_NLA_LINK_TX] = { .type = NLA_U32 }
101};
102
103const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = {
104 [TIPC_NLA_NODE_UNSPEC] = { .type = NLA_UNSPEC },
105 [TIPC_NLA_NODE_ADDR] = { .type = NLA_U32 },
106 [TIPC_NLA_NODE_UP] = { .type = NLA_FLAG },
107 [TIPC_NLA_NODE_ID] = { .type = NLA_BINARY,
108 .len = TIPC_NODEID_LEN},
109 [TIPC_NLA_NODE_KEY] = { .type = NLA_BINARY,
110 .len = TIPC_AEAD_KEY_SIZE_MAX},
111};
112
113/* Properties valid for media, bearer and link */
114const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = {
115 [TIPC_NLA_PROP_UNSPEC] = { .type = NLA_UNSPEC },
116 [TIPC_NLA_PROP_PRIO] = { .type = NLA_U32 },
117 [TIPC_NLA_PROP_TOL] = { .type = NLA_U32 },
118 [TIPC_NLA_PROP_WIN] = { .type = NLA_U32 },
119 [TIPC_NLA_PROP_MTU] = { .type = NLA_U32 },
120 [TIPC_NLA_PROP_BROADCAST] = { .type = NLA_U32 },
121 [TIPC_NLA_PROP_BROADCAST_RATIO] = { .type = NLA_U32 }
122};
123
124const struct nla_policy tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1] = {
125 [TIPC_NLA_BEARER_UNSPEC] = { .type = NLA_UNSPEC },
126 [TIPC_NLA_BEARER_NAME] = { .type = NLA_STRING,
127 .len = TIPC_MAX_BEARER_NAME },
128 [TIPC_NLA_BEARER_PROP] = { .type = NLA_NESTED },
129 [TIPC_NLA_BEARER_DOMAIN] = { .type = NLA_U32 }
130};
131
132const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = {
133 [TIPC_NLA_MEDIA_UNSPEC] = { .type = NLA_UNSPEC },
134 [TIPC_NLA_MEDIA_NAME] = { .type = NLA_STRING },
135 [TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED }
136};
137
138const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = {
139 [TIPC_NLA_UDP_UNSPEC] = {.type = NLA_UNSPEC},
140 [TIPC_NLA_UDP_LOCAL] = {.type = NLA_BINARY,
141 .len = sizeof(struct sockaddr_storage)},
142 [TIPC_NLA_UDP_REMOTE] = {.type = NLA_BINARY,
143 .len = sizeof(struct sockaddr_storage)},
144};
145
146/* Users of the legacy API (tipc-config) can't handle that we add operations,
147 * so we have a separate genl handling for the new API.
148 */
149static const struct genl_ops tipc_genl_v2_ops[] = {
150 {
151 .cmd = TIPC_NL_BEARER_DISABLE,
152 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
153 .doit = tipc_nl_bearer_disable,
154 },
155 {
156 .cmd = TIPC_NL_BEARER_ENABLE,
157 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
158 .doit = tipc_nl_bearer_enable,
159 },
160 {
161 .cmd = TIPC_NL_BEARER_GET,
162 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
163 .doit = tipc_nl_bearer_get,
164 .dumpit = tipc_nl_bearer_dump,
165 },
166 {
167 .cmd = TIPC_NL_BEARER_ADD,
168 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
169 .doit = tipc_nl_bearer_add,
170 },
171 {
172 .cmd = TIPC_NL_BEARER_SET,
173 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
174 .doit = tipc_nl_bearer_set,
175 },
176 {
177 .cmd = TIPC_NL_SOCK_GET,
178 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
179 .start = tipc_dump_start,
180 .dumpit = tipc_nl_sk_dump,
181 .done = tipc_dump_done,
182 },
183 {
184 .cmd = TIPC_NL_PUBL_GET,
185 .validate = GENL_DONT_VALIDATE_STRICT |
186 GENL_DONT_VALIDATE_DUMP_STRICT,
187 .dumpit = tipc_nl_publ_dump,
188 },
189 {
190 .cmd = TIPC_NL_LINK_GET,
191 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
192 .doit = tipc_nl_node_get_link,
193 .dumpit = tipc_nl_node_dump_link,
194 },
195 {
196 .cmd = TIPC_NL_LINK_SET,
197 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
198 .doit = tipc_nl_node_set_link,
199 },
200 {
201 .cmd = TIPC_NL_LINK_RESET_STATS,
202 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
203 .doit = tipc_nl_node_reset_link_stats,
204 },
205 {
206 .cmd = TIPC_NL_MEDIA_GET,
207 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
208 .doit = tipc_nl_media_get,
209 .dumpit = tipc_nl_media_dump,
210 },
211 {
212 .cmd = TIPC_NL_MEDIA_SET,
213 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
214 .doit = tipc_nl_media_set,
215 },
216 {
217 .cmd = TIPC_NL_NODE_GET,
218 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
219 .dumpit = tipc_nl_node_dump,
220 },
221 {
222 .cmd = TIPC_NL_NET_GET,
223 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
224 .dumpit = tipc_nl_net_dump,
225 },
226 {
227 .cmd = TIPC_NL_NET_SET,
228 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
229 .doit = tipc_nl_net_set,
230 },
231 {
232 .cmd = TIPC_NL_NAME_TABLE_GET,
233 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
234 .dumpit = tipc_nl_name_table_dump,
235 },
236 {
237 .cmd = TIPC_NL_MON_SET,
238 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
239 .doit = tipc_nl_node_set_monitor,
240 },
241 {
242 .cmd = TIPC_NL_MON_GET,
243 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
244 .doit = tipc_nl_node_get_monitor,
245 .dumpit = tipc_nl_node_dump_monitor,
246 },
247 {
248 .cmd = TIPC_NL_MON_PEER_GET,
249 .validate = GENL_DONT_VALIDATE_STRICT |
250 GENL_DONT_VALIDATE_DUMP_STRICT,
251 .dumpit = tipc_nl_node_dump_monitor_peer,
252 },
253 {
254 .cmd = TIPC_NL_PEER_REMOVE,
255 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
256 .doit = tipc_nl_peer_rm,
257 },
258#ifdef CONFIG_TIPC_MEDIA_UDP
259 {
260 .cmd = TIPC_NL_UDP_GET_REMOTEIP,
261 .validate = GENL_DONT_VALIDATE_STRICT |
262 GENL_DONT_VALIDATE_DUMP_STRICT,
263 .dumpit = tipc_udp_nl_dump_remoteip,
264 },
265#endif
266#ifdef CONFIG_TIPC_CRYPTO
267 {
268 .cmd = TIPC_NL_KEY_SET,
269 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
270 .doit = tipc_nl_node_set_key,
271 },
272 {
273 .cmd = TIPC_NL_KEY_FLUSH,
274 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
275 .doit = tipc_nl_node_flush_key,
276 },
277#endif
278 {
279 .cmd = TIPC_NL_ADDR_LEGACY_GET,
280 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
281 .doit = tipc_nl_net_addr_legacy_get,
282 },
283};
284
285struct genl_family tipc_genl_family __ro_after_init = {
286 .name = TIPC_GENL_V2_NAME,
287 .version = TIPC_GENL_V2_VERSION,
288 .hdrsize = 0,
289 .maxattr = TIPC_NLA_MAX,
290 .policy = tipc_nl_policy,
291 .netnsok = true,
292 .module = THIS_MODULE,
293 .ops = tipc_genl_v2_ops,
294 .n_ops = ARRAY_SIZE(tipc_genl_v2_ops),
295};
296
297int __init tipc_netlink_start(void)
298{
299 int res;
300
301 res = genl_register_family(&tipc_genl_family);
302 if (res) {
303 pr_err("Failed to register netlink interface\n");
304 return res;
305 }
306 return 0;
307}
308
309void tipc_netlink_stop(void)
310{
311 genl_unregister_family(&tipc_genl_family);
312}