netlink.c 10 KB

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  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. #include "core.h"
  37. #include "socket.h"
  38. #include "name_table.h"
  39. #include "bearer.h"
  40. #include "link.h"
  41. #include "node.h"
  42. #include "net.h"
  43. #include "udp_media.h"
  44. #include <net/genetlink.h>
  45. static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = {
  46. [TIPC_NLA_UNSPEC] = { .type = NLA_UNSPEC, },
  47. [TIPC_NLA_BEARER] = { .type = NLA_NESTED, },
  48. [TIPC_NLA_SOCK] = { .type = NLA_NESTED, },
  49. [TIPC_NLA_PUBL] = { .type = NLA_NESTED, },
  50. [TIPC_NLA_LINK] = { .type = NLA_NESTED, },
  51. [TIPC_NLA_MEDIA] = { .type = NLA_NESTED, },
  52. [TIPC_NLA_NODE] = { .type = NLA_NESTED, },
  53. [TIPC_NLA_NET] = { .type = NLA_NESTED, },
  54. [TIPC_NLA_NAME_TABLE] = { .type = NLA_NESTED, },
  55. [TIPC_NLA_MON] = { .type = NLA_NESTED, },
  56. };
  57. const struct nla_policy
  58. tipc_nl_name_table_policy[TIPC_NLA_NAME_TABLE_MAX + 1] = {
  59. [TIPC_NLA_NAME_TABLE_UNSPEC] = { .type = NLA_UNSPEC },
  60. [TIPC_NLA_NAME_TABLE_PUBL] = { .type = NLA_NESTED }
  61. };
  62. const struct nla_policy tipc_nl_monitor_policy[TIPC_NLA_MON_MAX + 1] = {
  63. [TIPC_NLA_MON_UNSPEC] = { .type = NLA_UNSPEC },
  64. [TIPC_NLA_MON_REF] = { .type = NLA_U32 },
  65. [TIPC_NLA_MON_ACTIVATION_THRESHOLD] = { .type = NLA_U32 },
  66. };
  67. const struct nla_policy tipc_nl_sock_policy[TIPC_NLA_SOCK_MAX + 1] = {
  68. [TIPC_NLA_SOCK_UNSPEC] = { .type = NLA_UNSPEC },
  69. [TIPC_NLA_SOCK_ADDR] = { .type = NLA_U32 },
  70. [TIPC_NLA_SOCK_REF] = { .type = NLA_U32 },
  71. [TIPC_NLA_SOCK_CON] = { .type = NLA_NESTED },
  72. [TIPC_NLA_SOCK_HAS_PUBL] = { .type = NLA_FLAG }
  73. };
  74. const struct nla_policy tipc_nl_net_policy[TIPC_NLA_NET_MAX + 1] = {
  75. [TIPC_NLA_NET_UNSPEC] = { .type = NLA_UNSPEC },
  76. [TIPC_NLA_NET_ID] = { .type = NLA_U32 },
  77. [TIPC_NLA_NET_ADDR] = { .type = NLA_U32 },
  78. [TIPC_NLA_NET_NODEID] = { .type = NLA_U64 },
  79. [TIPC_NLA_NET_NODEID_W1] = { .type = NLA_U64 },
  80. [TIPC_NLA_NET_ADDR_LEGACY] = { .type = NLA_FLAG }
  81. };
  82. const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = {
  83. [TIPC_NLA_LINK_UNSPEC] = { .type = NLA_UNSPEC },
  84. [TIPC_NLA_LINK_NAME] = { .type = NLA_STRING,
  85. .len = TIPC_MAX_LINK_NAME },
  86. [TIPC_NLA_LINK_MTU] = { .type = NLA_U32 },
  87. [TIPC_NLA_LINK_BROADCAST] = { .type = NLA_FLAG },
  88. [TIPC_NLA_LINK_UP] = { .type = NLA_FLAG },
  89. [TIPC_NLA_LINK_ACTIVE] = { .type = NLA_FLAG },
  90. [TIPC_NLA_LINK_PROP] = { .type = NLA_NESTED },
  91. [TIPC_NLA_LINK_STATS] = { .type = NLA_NESTED },
  92. [TIPC_NLA_LINK_RX] = { .type = NLA_U32 },
  93. [TIPC_NLA_LINK_TX] = { .type = NLA_U32 }
  94. };
  95. const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = {
  96. [TIPC_NLA_NODE_UNSPEC] = { .type = NLA_UNSPEC },
  97. [TIPC_NLA_NODE_ADDR] = { .type = NLA_U32 },
  98. [TIPC_NLA_NODE_UP] = { .type = NLA_FLAG },
  99. [TIPC_NLA_NODE_ID] = { .type = NLA_BINARY,
  100. .len = TIPC_NODEID_LEN},
  101. [TIPC_NLA_NODE_KEY] = { .type = NLA_BINARY,
  102. .len = TIPC_AEAD_KEY_SIZE_MAX},
  103. [TIPC_NLA_NODE_KEY_MASTER] = { .type = NLA_FLAG },
  104. [TIPC_NLA_NODE_REKEYING] = { .type = NLA_U32 },
  105. };
  106. /* Properties valid for media, bearer and link */
  107. const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = {
  108. [TIPC_NLA_PROP_UNSPEC] = { .type = NLA_UNSPEC },
  109. [TIPC_NLA_PROP_PRIO] = { .type = NLA_U32 },
  110. [TIPC_NLA_PROP_TOL] = { .type = NLA_U32 },
  111. [TIPC_NLA_PROP_WIN] = { .type = NLA_U32 },
  112. [TIPC_NLA_PROP_MTU] = { .type = NLA_U32 },
  113. [TIPC_NLA_PROP_BROADCAST] = { .type = NLA_U32 },
  114. [TIPC_NLA_PROP_BROADCAST_RATIO] = { .type = NLA_U32 }
  115. };
  116. const struct nla_policy tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1] = {
  117. [TIPC_NLA_BEARER_UNSPEC] = { .type = NLA_UNSPEC },
  118. [TIPC_NLA_BEARER_NAME] = { .type = NLA_STRING,
  119. .len = TIPC_MAX_BEARER_NAME },
  120. [TIPC_NLA_BEARER_PROP] = { .type = NLA_NESTED },
  121. [TIPC_NLA_BEARER_DOMAIN] = { .type = NLA_U32 }
  122. };
  123. const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = {
  124. [TIPC_NLA_MEDIA_UNSPEC] = { .type = NLA_UNSPEC },
  125. [TIPC_NLA_MEDIA_NAME] = { .type = NLA_STRING },
  126. [TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED }
  127. };
  128. const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = {
  129. [TIPC_NLA_UDP_UNSPEC] = {.type = NLA_UNSPEC},
  130. [TIPC_NLA_UDP_LOCAL] = {.type = NLA_BINARY,
  131. .len = sizeof(struct sockaddr_storage)},
  132. [TIPC_NLA_UDP_REMOTE] = {.type = NLA_BINARY,
  133. .len = sizeof(struct sockaddr_storage)},
  134. };
  135. /* Users of the legacy API (tipc-config) can't handle that we add operations,
  136. * so we have a separate genl handling for the new API.
  137. */
  138. static const struct genl_ops tipc_genl_v2_ops[] = {
  139. {
  140. .cmd = TIPC_NL_BEARER_DISABLE,
  141. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  142. .doit = tipc_nl_bearer_disable,
  143. },
  144. {
  145. .cmd = TIPC_NL_BEARER_ENABLE,
  146. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  147. .doit = tipc_nl_bearer_enable,
  148. },
  149. {
  150. .cmd = TIPC_NL_BEARER_GET,
  151. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  152. .doit = tipc_nl_bearer_get,
  153. .dumpit = tipc_nl_bearer_dump,
  154. },
  155. {
  156. .cmd = TIPC_NL_BEARER_ADD,
  157. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  158. .doit = tipc_nl_bearer_add,
  159. },
  160. {
  161. .cmd = TIPC_NL_BEARER_SET,
  162. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  163. .doit = tipc_nl_bearer_set,
  164. },
  165. {
  166. .cmd = TIPC_NL_SOCK_GET,
  167. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  168. .start = tipc_dump_start,
  169. .dumpit = tipc_nl_sk_dump,
  170. .done = tipc_dump_done,
  171. },
  172. {
  173. .cmd = TIPC_NL_PUBL_GET,
  174. .validate = GENL_DONT_VALIDATE_STRICT |
  175. GENL_DONT_VALIDATE_DUMP_STRICT,
  176. .dumpit = tipc_nl_publ_dump,
  177. },
  178. {
  179. .cmd = TIPC_NL_LINK_GET,
  180. .validate = GENL_DONT_VALIDATE_STRICT,
  181. .doit = tipc_nl_node_get_link,
  182. .dumpit = tipc_nl_node_dump_link,
  183. },
  184. {
  185. .cmd = TIPC_NL_LINK_SET,
  186. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  187. .doit = tipc_nl_node_set_link,
  188. },
  189. {
  190. .cmd = TIPC_NL_LINK_RESET_STATS,
  191. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  192. .doit = tipc_nl_node_reset_link_stats,
  193. },
  194. {
  195. .cmd = TIPC_NL_MEDIA_GET,
  196. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  197. .doit = tipc_nl_media_get,
  198. .dumpit = tipc_nl_media_dump,
  199. },
  200. {
  201. .cmd = TIPC_NL_MEDIA_SET,
  202. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  203. .doit = tipc_nl_media_set,
  204. },
  205. {
  206. .cmd = TIPC_NL_NODE_GET,
  207. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  208. .dumpit = tipc_nl_node_dump,
  209. },
  210. {
  211. .cmd = TIPC_NL_NET_GET,
  212. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  213. .dumpit = tipc_nl_net_dump,
  214. },
  215. {
  216. .cmd = TIPC_NL_NET_SET,
  217. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  218. .doit = tipc_nl_net_set,
  219. },
  220. {
  221. .cmd = TIPC_NL_NAME_TABLE_GET,
  222. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  223. .dumpit = tipc_nl_name_table_dump,
  224. },
  225. {
  226. .cmd = TIPC_NL_MON_SET,
  227. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  228. .doit = tipc_nl_node_set_monitor,
  229. },
  230. {
  231. .cmd = TIPC_NL_MON_GET,
  232. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  233. .doit = tipc_nl_node_get_monitor,
  234. .dumpit = tipc_nl_node_dump_monitor,
  235. },
  236. {
  237. .cmd = TIPC_NL_MON_PEER_GET,
  238. .validate = GENL_DONT_VALIDATE_STRICT |
  239. GENL_DONT_VALIDATE_DUMP_STRICT,
  240. .dumpit = tipc_nl_node_dump_monitor_peer,
  241. },
  242. {
  243. .cmd = TIPC_NL_PEER_REMOVE,
  244. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  245. .doit = tipc_nl_peer_rm,
  246. },
  247. #ifdef CONFIG_TIPC_MEDIA_UDP
  248. {
  249. .cmd = TIPC_NL_UDP_GET_REMOTEIP,
  250. .validate = GENL_DONT_VALIDATE_STRICT |
  251. GENL_DONT_VALIDATE_DUMP_STRICT,
  252. .dumpit = tipc_udp_nl_dump_remoteip,
  253. },
  254. #endif
  255. #ifdef CONFIG_TIPC_CRYPTO
  256. {
  257. .cmd = TIPC_NL_KEY_SET,
  258. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  259. .doit = tipc_nl_node_set_key,
  260. },
  261. {
  262. .cmd = TIPC_NL_KEY_FLUSH,
  263. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  264. .doit = tipc_nl_node_flush_key,
  265. },
  266. #endif
  267. {
  268. .cmd = TIPC_NL_ADDR_LEGACY_GET,
  269. .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
  270. .doit = tipc_nl_net_addr_legacy_get,
  271. },
  272. };
  273. struct genl_family tipc_genl_family __ro_after_init = {
  274. .name = TIPC_GENL_V2_NAME,
  275. .version = TIPC_GENL_V2_VERSION,
  276. .hdrsize = 0,
  277. .maxattr = TIPC_NLA_MAX,
  278. .policy = tipc_nl_policy,
  279. .netnsok = true,
  280. .module = THIS_MODULE,
  281. .ops = tipc_genl_v2_ops,
  282. .n_ops = ARRAY_SIZE(tipc_genl_v2_ops),
  283. };
  284. int __init tipc_netlink_start(void)
  285. {
  286. int res;
  287. res = genl_register_family(&tipc_genl_family);
  288. if (res) {
  289. pr_err("Failed to register netlink interface\n");
  290. return res;
  291. }
  292. return 0;
  293. }
  294. void tipc_netlink_stop(void)
  295. {
  296. genl_unregister_family(&tipc_genl_family);
  297. }