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 | |
47 | static 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 | |
60 | const struct nla_policy |
61 | tipc_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 | |
66 | const 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 | |
72 | const 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 | |
80 | const 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 | |
89 | const 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_NUL_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 | |
103 | const 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 | [TIPC_NLA_NODE_KEY_MASTER] = { .type = NLA_FLAG }, |
112 | [TIPC_NLA_NODE_REKEYING] = { .type = NLA_U32 }, |
113 | }; |
114 | |
115 | /* Properties valid for media, bearer and link */ |
116 | const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = { |
117 | [TIPC_NLA_PROP_UNSPEC] = { .type = NLA_UNSPEC }, |
118 | [TIPC_NLA_PROP_PRIO] = { .type = NLA_U32 }, |
119 | [TIPC_NLA_PROP_TOL] = { .type = NLA_U32 }, |
120 | [TIPC_NLA_PROP_WIN] = { .type = NLA_U32 }, |
121 | [TIPC_NLA_PROP_MTU] = { .type = NLA_U32 }, |
122 | [TIPC_NLA_PROP_BROADCAST] = { .type = NLA_U32 }, |
123 | [TIPC_NLA_PROP_BROADCAST_RATIO] = { .type = NLA_U32 } |
124 | }; |
125 | |
126 | const struct nla_policy tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1] = { |
127 | [TIPC_NLA_BEARER_UNSPEC] = { .type = NLA_UNSPEC }, |
128 | [TIPC_NLA_BEARER_NAME] = { .type = NLA_NUL_STRING, |
129 | .len = TIPC_MAX_BEARER_NAME }, |
130 | [TIPC_NLA_BEARER_PROP] = { .type = NLA_NESTED }, |
131 | [TIPC_NLA_BEARER_DOMAIN] = { .type = NLA_U32 } |
132 | }; |
133 | |
134 | const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = { |
135 | [TIPC_NLA_MEDIA_UNSPEC] = { .type = NLA_UNSPEC }, |
136 | [TIPC_NLA_MEDIA_NAME] = { .type = NLA_STRING }, |
137 | [TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED } |
138 | }; |
139 | |
140 | const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = { |
141 | [TIPC_NLA_UDP_UNSPEC] = {.type = NLA_UNSPEC}, |
142 | [TIPC_NLA_UDP_LOCAL] = {.type = NLA_BINARY, |
143 | .len = sizeof(struct sockaddr_storage)}, |
144 | [TIPC_NLA_UDP_REMOTE] = {.type = NLA_BINARY, |
145 | .len = sizeof(struct sockaddr_storage)}, |
146 | }; |
147 | |
148 | /* Users of the legacy API (tipc-config) can't handle that we add operations, |
149 | * so we have a separate genl handling for the new API. |
150 | */ |
151 | static const struct genl_ops tipc_genl_v2_ops[] = { |
152 | { |
153 | .cmd = TIPC_NL_BEARER_DISABLE, |
154 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
155 | .doit = tipc_nl_bearer_disable, |
156 | }, |
157 | { |
158 | .cmd = TIPC_NL_BEARER_ENABLE, |
159 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
160 | .doit = tipc_nl_bearer_enable, |
161 | }, |
162 | { |
163 | .cmd = TIPC_NL_BEARER_GET, |
164 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
165 | .doit = tipc_nl_bearer_get, |
166 | .dumpit = tipc_nl_bearer_dump, |
167 | }, |
168 | { |
169 | .cmd = TIPC_NL_BEARER_ADD, |
170 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
171 | .doit = tipc_nl_bearer_add, |
172 | }, |
173 | { |
174 | .cmd = TIPC_NL_BEARER_SET, |
175 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
176 | .doit = tipc_nl_bearer_set, |
177 | }, |
178 | { |
179 | .cmd = TIPC_NL_SOCK_GET, |
180 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
181 | .start = tipc_dump_start, |
182 | .dumpit = tipc_nl_sk_dump, |
183 | .done = tipc_dump_done, |
184 | }, |
185 | { |
186 | .cmd = TIPC_NL_PUBL_GET, |
187 | .validate = GENL_DONT_VALIDATE_STRICT | |
188 | GENL_DONT_VALIDATE_DUMP_STRICT, |
189 | .dumpit = tipc_nl_publ_dump, |
190 | }, |
191 | { |
192 | .cmd = TIPC_NL_LINK_GET, |
193 | .validate = GENL_DONT_VALIDATE_STRICT, |
194 | .doit = tipc_nl_node_get_link, |
195 | .dumpit = tipc_nl_node_dump_link, |
196 | }, |
197 | { |
198 | .cmd = TIPC_NL_LINK_SET, |
199 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
200 | .doit = tipc_nl_node_set_link, |
201 | }, |
202 | { |
203 | .cmd = TIPC_NL_LINK_RESET_STATS, |
204 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
205 | .doit = tipc_nl_node_reset_link_stats, |
206 | }, |
207 | { |
208 | .cmd = TIPC_NL_MEDIA_GET, |
209 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
210 | .doit = tipc_nl_media_get, |
211 | .dumpit = tipc_nl_media_dump, |
212 | }, |
213 | { |
214 | .cmd = TIPC_NL_MEDIA_SET, |
215 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
216 | .doit = tipc_nl_media_set, |
217 | }, |
218 | { |
219 | .cmd = TIPC_NL_NODE_GET, |
220 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
221 | .dumpit = tipc_nl_node_dump, |
222 | }, |
223 | { |
224 | .cmd = TIPC_NL_NET_GET, |
225 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
226 | .dumpit = tipc_nl_net_dump, |
227 | }, |
228 | { |
229 | .cmd = TIPC_NL_NET_SET, |
230 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
231 | .doit = tipc_nl_net_set, |
232 | }, |
233 | { |
234 | .cmd = TIPC_NL_NAME_TABLE_GET, |
235 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
236 | .dumpit = tipc_nl_name_table_dump, |
237 | }, |
238 | { |
239 | .cmd = TIPC_NL_MON_SET, |
240 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
241 | .doit = tipc_nl_node_set_monitor, |
242 | }, |
243 | { |
244 | .cmd = TIPC_NL_MON_GET, |
245 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
246 | .doit = tipc_nl_node_get_monitor, |
247 | .dumpit = tipc_nl_node_dump_monitor, |
248 | }, |
249 | { |
250 | .cmd = TIPC_NL_MON_PEER_GET, |
251 | .validate = GENL_DONT_VALIDATE_STRICT | |
252 | GENL_DONT_VALIDATE_DUMP_STRICT, |
253 | .dumpit = tipc_nl_node_dump_monitor_peer, |
254 | }, |
255 | { |
256 | .cmd = TIPC_NL_PEER_REMOVE, |
257 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
258 | .doit = tipc_nl_peer_rm, |
259 | }, |
260 | #ifdef CONFIG_TIPC_MEDIA_UDP |
261 | { |
262 | .cmd = TIPC_NL_UDP_GET_REMOTEIP, |
263 | .validate = GENL_DONT_VALIDATE_STRICT | |
264 | GENL_DONT_VALIDATE_DUMP_STRICT, |
265 | .dumpit = tipc_udp_nl_dump_remoteip, |
266 | }, |
267 | #endif |
268 | #ifdef CONFIG_TIPC_CRYPTO |
269 | { |
270 | .cmd = TIPC_NL_KEY_SET, |
271 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
272 | .doit = tipc_nl_node_set_key, |
273 | }, |
274 | { |
275 | .cmd = TIPC_NL_KEY_FLUSH, |
276 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
277 | .doit = tipc_nl_node_flush_key, |
278 | }, |
279 | #endif |
280 | { |
281 | .cmd = TIPC_NL_ADDR_LEGACY_GET, |
282 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
283 | .doit = tipc_nl_net_addr_legacy_get, |
284 | }, |
285 | }; |
286 | |
287 | struct genl_family tipc_genl_family __ro_after_init = { |
288 | .name = TIPC_GENL_V2_NAME, |
289 | .version = TIPC_GENL_V2_VERSION, |
290 | .hdrsize = 0, |
291 | .maxattr = TIPC_NLA_MAX, |
292 | .policy = tipc_nl_policy, |
293 | .netnsok = true, |
294 | .module = THIS_MODULE, |
295 | .ops = tipc_genl_v2_ops, |
296 | .n_ops = ARRAY_SIZE(tipc_genl_v2_ops), |
297 | .resv_start_op = TIPC_NL_ADDR_LEGACY_GET + 1, |
298 | }; |
299 | |
300 | int __init tipc_netlink_start(void) |
301 | { |
302 | int res; |
303 | |
304 | res = genl_register_family(family: &tipc_genl_family); |
305 | if (res) { |
306 | pr_err("Failed to register netlink interface\n" ); |
307 | return res; |
308 | } |
309 | return 0; |
310 | } |
311 | |
312 | void tipc_netlink_stop(void) |
313 | { |
314 | genl_unregister_family(family: &tipc_genl_family); |
315 | } |
316 | |