sm_statetable.c 33 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /* SCTP kernel implementation
  3. * (C) Copyright IBM Corp. 2001, 2004
  4. * Copyright (c) 1999-2000 Cisco, Inc.
  5. * Copyright (c) 1999-2001 Motorola, Inc.
  6. * Copyright (c) 2001 Intel Corp.
  7. * Copyright (c) 2001 Nokia, Inc.
  8. *
  9. * This file is part of the SCTP kernel implementation
  10. *
  11. * These are the state tables for the SCTP state machine.
  12. *
  13. * Please send any bug reports or fixes you make to the
  14. * email address(es):
  15. * lksctp developers <linux-sctp@vger.kernel.org>
  16. *
  17. * Written or modified by:
  18. * La Monte H.P. Yarroll <piggy@acm.org>
  19. * Karl Knutson <karl@athena.chicago.il.us>
  20. * Jon Grimm <jgrimm@us.ibm.com>
  21. * Hui Huang <hui.huang@nokia.com>
  22. * Daisy Chang <daisyc@us.ibm.com>
  23. * Ardelle Fan <ardelle.fan@intel.com>
  24. * Sridhar Samudrala <sri@us.ibm.com>
  25. */
  26. #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  27. #include <linux/skbuff.h>
  28. #include <net/sctp/sctp.h>
  29. #include <net/sctp/sm.h>
  30. static const struct sctp_sm_table_entry
  31. primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES];
  32. static const struct sctp_sm_table_entry
  33. other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES];
  34. static const struct sctp_sm_table_entry
  35. timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES];
  36. static const struct sctp_sm_table_entry *sctp_chunk_event_lookup(
  37. struct net *net,
  38. enum sctp_cid cid,
  39. enum sctp_state state);
  40. static const struct sctp_sm_table_entry bug = {
  41. .fn = sctp_sf_bug,
  42. .name = "sctp_sf_bug"
  43. };
  44. #define DO_LOOKUP(_max, _type, _table) \
  45. ({ \
  46. const struct sctp_sm_table_entry *rtn; \
  47. \
  48. if ((event_subtype._type > (_max))) { \
  49. pr_warn("table %p possible attack: event %d exceeds max %d\n", \
  50. _table, event_subtype._type, _max); \
  51. rtn = &bug; \
  52. } else \
  53. rtn = &_table[event_subtype._type][(int)state]; \
  54. \
  55. rtn; \
  56. })
  57. const struct sctp_sm_table_entry *sctp_sm_lookup_event(
  58. struct net *net,
  59. enum sctp_event_type event_type,
  60. enum sctp_state state,
  61. union sctp_subtype event_subtype)
  62. {
  63. switch (event_type) {
  64. case SCTP_EVENT_T_CHUNK:
  65. return sctp_chunk_event_lookup(net, event_subtype.chunk, state);
  66. case SCTP_EVENT_T_TIMEOUT:
  67. return DO_LOOKUP(SCTP_EVENT_TIMEOUT_MAX, timeout,
  68. timeout_event_table);
  69. case SCTP_EVENT_T_OTHER:
  70. return DO_LOOKUP(SCTP_EVENT_OTHER_MAX, other,
  71. other_event_table);
  72. case SCTP_EVENT_T_PRIMITIVE:
  73. return DO_LOOKUP(SCTP_EVENT_PRIMITIVE_MAX, primitive,
  74. primitive_event_table);
  75. default:
  76. /* Yikes! We got an illegal event type. */
  77. return &bug;
  78. }
  79. }
  80. #define TYPE_SCTP_FUNC(func) {.fn = func, .name = #func}
  81. #define TYPE_SCTP_DATA { \
  82. /* SCTP_STATE_CLOSED */ \
  83. TYPE_SCTP_FUNC(sctp_sf_ootb), \
  84. /* SCTP_STATE_COOKIE_WAIT */ \
  85. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  86. /* SCTP_STATE_COOKIE_ECHOED */ \
  87. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  88. /* SCTP_STATE_ESTABLISHED */ \
  89. TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
  90. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  91. TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
  92. /* SCTP_STATE_SHUTDOWN_SENT */ \
  93. TYPE_SCTP_FUNC(sctp_sf_eat_data_fast_4_4), \
  94. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  95. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  96. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  97. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  98. } /* TYPE_SCTP_DATA */
  99. #define TYPE_SCTP_INIT { \
  100. /* SCTP_STATE_CLOSED */ \
  101. TYPE_SCTP_FUNC(sctp_sf_do_5_1B_init), \
  102. /* SCTP_STATE_COOKIE_WAIT */ \
  103. TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
  104. /* SCTP_STATE_COOKIE_ECHOED */ \
  105. TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
  106. /* SCTP_STATE_ESTABLISHED */ \
  107. TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
  108. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  109. TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
  110. /* SCTP_STATE_SHUTDOWN_SENT */ \
  111. TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
  112. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  113. TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
  114. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  115. TYPE_SCTP_FUNC(sctp_sf_do_9_2_reshutack), \
  116. } /* TYPE_SCTP_INIT */
  117. #define TYPE_SCTP_INIT_ACK { \
  118. /* SCTP_STATE_CLOSED */ \
  119. TYPE_SCTP_FUNC(sctp_sf_do_5_2_3_initack), \
  120. /* SCTP_STATE_COOKIE_WAIT */ \
  121. TYPE_SCTP_FUNC(sctp_sf_do_5_1C_ack), \
  122. /* SCTP_STATE_COOKIE_ECHOED */ \
  123. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  124. /* SCTP_STATE_ESTABLISHED */ \
  125. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  126. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  127. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  128. /* SCTP_STATE_SHUTDOWN_SENT */ \
  129. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  130. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  131. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  132. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  133. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  134. } /* TYPE_SCTP_INIT_ACK */
  135. #define TYPE_SCTP_SACK { \
  136. /* SCTP_STATE_CLOSED */ \
  137. TYPE_SCTP_FUNC(sctp_sf_ootb), \
  138. /* SCTP_STATE_COOKIE_WAIT */ \
  139. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  140. /* SCTP_STATE_COOKIE_ECHOED */ \
  141. TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
  142. /* SCTP_STATE_ESTABLISHED */ \
  143. TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
  144. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  145. TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
  146. /* SCTP_STATE_SHUTDOWN_SENT */ \
  147. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  148. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  149. TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
  150. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  151. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  152. } /* TYPE_SCTP_SACK */
  153. #define TYPE_SCTP_HEARTBEAT { \
  154. /* SCTP_STATE_CLOSED */ \
  155. TYPE_SCTP_FUNC(sctp_sf_ootb), \
  156. /* SCTP_STATE_COOKIE_WAIT */ \
  157. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  158. /* SCTP_STATE_COOKIE_ECHOED */ \
  159. TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
  160. /* SCTP_STATE_ESTABLISHED */ \
  161. TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
  162. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  163. TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
  164. /* SCTP_STATE_SHUTDOWN_SENT */ \
  165. TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
  166. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  167. TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
  168. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  169. /* This should not happen, but we are nice. */ \
  170. TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
  171. } /* TYPE_SCTP_HEARTBEAT */
  172. #define TYPE_SCTP_HEARTBEAT_ACK { \
  173. /* SCTP_STATE_CLOSED */ \
  174. TYPE_SCTP_FUNC(sctp_sf_ootb), \
  175. /* SCTP_STATE_COOKIE_WAIT */ \
  176. TYPE_SCTP_FUNC(sctp_sf_violation), \
  177. /* SCTP_STATE_COOKIE_ECHOED */ \
  178. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  179. /* SCTP_STATE_ESTABLISHED */ \
  180. TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
  181. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  182. TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
  183. /* SCTP_STATE_SHUTDOWN_SENT */ \
  184. TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
  185. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  186. TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
  187. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  188. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  189. } /* TYPE_SCTP_HEARTBEAT_ACK */
  190. #define TYPE_SCTP_ABORT { \
  191. /* SCTP_STATE_CLOSED */ \
  192. TYPE_SCTP_FUNC(sctp_sf_pdiscard), \
  193. /* SCTP_STATE_COOKIE_WAIT */ \
  194. TYPE_SCTP_FUNC(sctp_sf_cookie_wait_abort), \
  195. /* SCTP_STATE_COOKIE_ECHOED */ \
  196. TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_abort), \
  197. /* SCTP_STATE_ESTABLISHED */ \
  198. TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
  199. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  200. TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_abort), \
  201. /* SCTP_STATE_SHUTDOWN_SENT */ \
  202. TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_abort), \
  203. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  204. TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
  205. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  206. TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_abort), \
  207. } /* TYPE_SCTP_ABORT */
  208. #define TYPE_SCTP_SHUTDOWN { \
  209. /* SCTP_STATE_CLOSED */ \
  210. TYPE_SCTP_FUNC(sctp_sf_ootb), \
  211. /* SCTP_STATE_COOKIE_WAIT */ \
  212. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  213. /* SCTP_STATE_COOKIE_ECHOED */ \
  214. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  215. /* SCTP_STATE_ESTABLISHED */ \
  216. TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
  217. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  218. TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
  219. /* SCTP_STATE_SHUTDOWN_SENT */ \
  220. TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
  221. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  222. TYPE_SCTP_FUNC(sctp_sf_do_9_2_shut_ctsn), \
  223. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  224. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  225. } /* TYPE_SCTP_SHUTDOWN */
  226. #define TYPE_SCTP_SHUTDOWN_ACK { \
  227. /* SCTP_STATE_CLOSED */ \
  228. TYPE_SCTP_FUNC(sctp_sf_ootb), \
  229. /* SCTP_STATE_COOKIE_WAIT */ \
  230. TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
  231. /* SCTP_STATE_COOKIE_ECHOED */ \
  232. TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
  233. /* SCTP_STATE_ESTABLISHED */ \
  234. TYPE_SCTP_FUNC(sctp_sf_violation), \
  235. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  236. TYPE_SCTP_FUNC(sctp_sf_violation), \
  237. /* SCTP_STATE_SHUTDOWN_SENT */ \
  238. TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
  239. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  240. TYPE_SCTP_FUNC(sctp_sf_violation), \
  241. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  242. TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
  243. } /* TYPE_SCTP_SHUTDOWN_ACK */
  244. #define TYPE_SCTP_ERROR { \
  245. /* SCTP_STATE_CLOSED */ \
  246. TYPE_SCTP_FUNC(sctp_sf_ootb), \
  247. /* SCTP_STATE_COOKIE_WAIT */ \
  248. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  249. /* SCTP_STATE_COOKIE_ECHOED */ \
  250. TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_err), \
  251. /* SCTP_STATE_ESTABLISHED */ \
  252. TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
  253. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  254. TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
  255. /* SCTP_STATE_SHUTDOWN_SENT */ \
  256. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  257. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  258. TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
  259. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  260. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  261. } /* TYPE_SCTP_ERROR */
  262. #define TYPE_SCTP_COOKIE_ECHO { \
  263. /* SCTP_STATE_CLOSED */ \
  264. TYPE_SCTP_FUNC(sctp_sf_do_5_1D_ce), \
  265. /* SCTP_STATE_COOKIE_WAIT */ \
  266. TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
  267. /* SCTP_STATE_COOKIE_ECHOED */ \
  268. TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
  269. /* SCTP_STATE_ESTABLISHED */ \
  270. TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
  271. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  272. TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
  273. /* SCTP_STATE_SHUTDOWN_SENT */ \
  274. TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
  275. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  276. TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
  277. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  278. TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
  279. } /* TYPE_SCTP_COOKIE_ECHO */
  280. #define TYPE_SCTP_COOKIE_ACK { \
  281. /* SCTP_STATE_CLOSED */ \
  282. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  283. /* SCTP_STATE_COOKIE_WAIT */ \
  284. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  285. /* SCTP_STATE_COOKIE_ECHOED */ \
  286. TYPE_SCTP_FUNC(sctp_sf_do_5_1E_ca), \
  287. /* SCTP_STATE_ESTABLISHED */ \
  288. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  289. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  290. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  291. /* SCTP_STATE_SHUTDOWN_SENT */ \
  292. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  293. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  294. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  295. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  296. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  297. } /* TYPE_SCTP_COOKIE_ACK */
  298. #define TYPE_SCTP_ECN_ECNE { \
  299. /* SCTP_STATE_CLOSED */ \
  300. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  301. /* SCTP_STATE_COOKIE_WAIT */ \
  302. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  303. /* SCTP_STATE_COOKIE_ECHOED */ \
  304. TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
  305. /* SCTP_STATE_ESTABLISHED */ \
  306. TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
  307. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  308. TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
  309. /* SCTP_STATE_SHUTDOWN_SENT */ \
  310. TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
  311. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  312. TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
  313. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  314. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  315. } /* TYPE_SCTP_ECN_ECNE */
  316. #define TYPE_SCTP_ECN_CWR { \
  317. /* SCTP_STATE_CLOSED */ \
  318. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  319. /* SCTP_STATE_COOKIE_WAIT */ \
  320. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  321. /* SCTP_STATE_COOKIE_ECHOED */ \
  322. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  323. /* SCTP_STATE_ESTABLISHED */ \
  324. TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
  325. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  326. TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
  327. /* SCTP_STATE_SHUTDOWN_SENT */ \
  328. TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
  329. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  330. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  331. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  332. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  333. } /* TYPE_SCTP_ECN_CWR */
  334. #define TYPE_SCTP_SHUTDOWN_COMPLETE { \
  335. /* SCTP_STATE_CLOSED */ \
  336. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  337. /* SCTP_STATE_COOKIE_WAIT */ \
  338. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  339. /* SCTP_STATE_COOKIE_ECHOED */ \
  340. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  341. /* SCTP_STATE_ESTABLISHED */ \
  342. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  343. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  344. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  345. /* SCTP_STATE_SHUTDOWN_SENT */ \
  346. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  347. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  348. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  349. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  350. TYPE_SCTP_FUNC(sctp_sf_do_4_C), \
  351. } /* TYPE_SCTP_SHUTDOWN_COMPLETE */
  352. /* The primary index for this table is the chunk type.
  353. * The secondary index for this table is the state.
  354. *
  355. * For base protocol (RFC 2960).
  356. */
  357. static const struct sctp_sm_table_entry
  358. chunk_event_table[SCTP_NUM_BASE_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
  359. TYPE_SCTP_DATA,
  360. TYPE_SCTP_INIT,
  361. TYPE_SCTP_INIT_ACK,
  362. TYPE_SCTP_SACK,
  363. TYPE_SCTP_HEARTBEAT,
  364. TYPE_SCTP_HEARTBEAT_ACK,
  365. TYPE_SCTP_ABORT,
  366. TYPE_SCTP_SHUTDOWN,
  367. TYPE_SCTP_SHUTDOWN_ACK,
  368. TYPE_SCTP_ERROR,
  369. TYPE_SCTP_COOKIE_ECHO,
  370. TYPE_SCTP_COOKIE_ACK,
  371. TYPE_SCTP_ECN_ECNE,
  372. TYPE_SCTP_ECN_CWR,
  373. TYPE_SCTP_SHUTDOWN_COMPLETE,
  374. }; /* state_fn_t chunk_event_table[][] */
  375. #define TYPE_SCTP_ASCONF { \
  376. /* SCTP_STATE_CLOSED */ \
  377. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  378. /* SCTP_STATE_COOKIE_WAIT */ \
  379. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  380. /* SCTP_STATE_COOKIE_ECHOED */ \
  381. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  382. /* SCTP_STATE_ESTABLISHED */ \
  383. TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
  384. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  385. TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
  386. /* SCTP_STATE_SHUTDOWN_SENT */ \
  387. TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
  388. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  389. TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
  390. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  391. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  392. } /* TYPE_SCTP_ASCONF */
  393. #define TYPE_SCTP_ASCONF_ACK { \
  394. /* SCTP_STATE_CLOSED */ \
  395. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  396. /* SCTP_STATE_COOKIE_WAIT */ \
  397. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  398. /* SCTP_STATE_COOKIE_ECHOED */ \
  399. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  400. /* SCTP_STATE_ESTABLISHED */ \
  401. TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
  402. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  403. TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
  404. /* SCTP_STATE_SHUTDOWN_SENT */ \
  405. TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
  406. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  407. TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
  408. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  409. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  410. } /* TYPE_SCTP_ASCONF_ACK */
  411. /* The primary index for this table is the chunk type.
  412. * The secondary index for this table is the state.
  413. */
  414. static const struct sctp_sm_table_entry
  415. addip_chunk_event_table[SCTP_NUM_ADDIP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
  416. TYPE_SCTP_ASCONF,
  417. TYPE_SCTP_ASCONF_ACK,
  418. }; /*state_fn_t addip_chunk_event_table[][] */
  419. #define TYPE_SCTP_FWD_TSN { \
  420. /* SCTP_STATE_CLOSED */ \
  421. TYPE_SCTP_FUNC(sctp_sf_ootb), \
  422. /* SCTP_STATE_COOKIE_WAIT */ \
  423. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  424. /* SCTP_STATE_COOKIE_ECHOED */ \
  425. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  426. /* SCTP_STATE_ESTABLISHED */ \
  427. TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
  428. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  429. TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
  430. /* SCTP_STATE_SHUTDOWN_SENT */ \
  431. TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn_fast), \
  432. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  433. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  434. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  435. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  436. } /* TYPE_SCTP_FWD_TSN */
  437. /* The primary index for this table is the chunk type.
  438. * The secondary index for this table is the state.
  439. */
  440. static const struct sctp_sm_table_entry
  441. prsctp_chunk_event_table[SCTP_NUM_PRSCTP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
  442. TYPE_SCTP_FWD_TSN,
  443. }; /*state_fn_t prsctp_chunk_event_table[][] */
  444. #define TYPE_SCTP_RECONF { \
  445. /* SCTP_STATE_CLOSED */ \
  446. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  447. /* SCTP_STATE_COOKIE_WAIT */ \
  448. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  449. /* SCTP_STATE_COOKIE_ECHOED */ \
  450. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  451. /* SCTP_STATE_ESTABLISHED */ \
  452. TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
  453. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  454. TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
  455. /* SCTP_STATE_SHUTDOWN_SENT */ \
  456. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  457. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  458. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  459. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  460. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  461. } /* TYPE_SCTP_RECONF */
  462. /* The primary index for this table is the chunk type.
  463. * The secondary index for this table is the state.
  464. */
  465. static const struct sctp_sm_table_entry
  466. reconf_chunk_event_table[SCTP_NUM_RECONF_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
  467. TYPE_SCTP_RECONF,
  468. }; /*state_fn_t reconf_chunk_event_table[][] */
  469. #define TYPE_SCTP_AUTH { \
  470. /* SCTP_STATE_CLOSED */ \
  471. TYPE_SCTP_FUNC(sctp_sf_ootb), \
  472. /* SCTP_STATE_COOKIE_WAIT */ \
  473. TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  474. /* SCTP_STATE_COOKIE_ECHOED */ \
  475. TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
  476. /* SCTP_STATE_ESTABLISHED */ \
  477. TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
  478. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  479. TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
  480. /* SCTP_STATE_SHUTDOWN_SENT */ \
  481. TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
  482. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  483. TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
  484. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  485. TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
  486. } /* TYPE_SCTP_AUTH */
  487. /* The primary index for this table is the chunk type.
  488. * The secondary index for this table is the state.
  489. */
  490. static const struct sctp_sm_table_entry
  491. auth_chunk_event_table[SCTP_NUM_AUTH_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
  492. TYPE_SCTP_AUTH,
  493. }; /*state_fn_t auth_chunk_event_table[][] */
  494. static const struct sctp_sm_table_entry
  495. chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
  496. /* SCTP_STATE_CLOSED */
  497. TYPE_SCTP_FUNC(sctp_sf_ootb),
  498. /* SCTP_STATE_COOKIE_WAIT */
  499. TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
  500. /* SCTP_STATE_COOKIE_ECHOED */
  501. TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
  502. /* SCTP_STATE_ESTABLISHED */
  503. TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
  504. /* SCTP_STATE_SHUTDOWN_PENDING */
  505. TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
  506. /* SCTP_STATE_SHUTDOWN_SENT */
  507. TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
  508. /* SCTP_STATE_SHUTDOWN_RECEIVED */
  509. TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
  510. /* SCTP_STATE_SHUTDOWN_ACK_SENT */
  511. TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
  512. }; /* chunk unknown */
  513. #define TYPE_SCTP_PRIMITIVE_ASSOCIATE { \
  514. /* SCTP_STATE_CLOSED */ \
  515. TYPE_SCTP_FUNC(sctp_sf_do_prm_asoc), \
  516. /* SCTP_STATE_COOKIE_WAIT */ \
  517. TYPE_SCTP_FUNC(sctp_sf_not_impl), \
  518. /* SCTP_STATE_COOKIE_ECHOED */ \
  519. TYPE_SCTP_FUNC(sctp_sf_not_impl), \
  520. /* SCTP_STATE_ESTABLISHED */ \
  521. TYPE_SCTP_FUNC(sctp_sf_not_impl), \
  522. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  523. TYPE_SCTP_FUNC(sctp_sf_not_impl), \
  524. /* SCTP_STATE_SHUTDOWN_SENT */ \
  525. TYPE_SCTP_FUNC(sctp_sf_not_impl), \
  526. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  527. TYPE_SCTP_FUNC(sctp_sf_not_impl), \
  528. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  529. TYPE_SCTP_FUNC(sctp_sf_not_impl), \
  530. } /* TYPE_SCTP_PRIMITIVE_ASSOCIATE */
  531. #define TYPE_SCTP_PRIMITIVE_SHUTDOWN { \
  532. /* SCTP_STATE_CLOSED */ \
  533. TYPE_SCTP_FUNC(sctp_sf_error_closed), \
  534. /* SCTP_STATE_COOKIE_WAIT */ \
  535. TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_shutdown), \
  536. /* SCTP_STATE_COOKIE_ECHOED */ \
  537. TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_shutdown),\
  538. /* SCTP_STATE_ESTABLISHED */ \
  539. TYPE_SCTP_FUNC(sctp_sf_do_9_2_prm_shutdown), \
  540. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  541. TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
  542. /* SCTP_STATE_SHUTDOWN_SENT */ \
  543. TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
  544. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  545. TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
  546. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  547. TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
  548. } /* TYPE_SCTP_PRIMITIVE_SHUTDOWN */
  549. #define TYPE_SCTP_PRIMITIVE_ABORT { \
  550. /* SCTP_STATE_CLOSED */ \
  551. TYPE_SCTP_FUNC(sctp_sf_error_closed), \
  552. /* SCTP_STATE_COOKIE_WAIT */ \
  553. TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_abort), \
  554. /* SCTP_STATE_COOKIE_ECHOED */ \
  555. TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_abort), \
  556. /* SCTP_STATE_ESTABLISHED */ \
  557. TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
  558. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  559. TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_prm_abort), \
  560. /* SCTP_STATE_SHUTDOWN_SENT */ \
  561. TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_prm_abort), \
  562. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  563. TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
  564. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  565. TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_prm_abort), \
  566. } /* TYPE_SCTP_PRIMITIVE_ABORT */
  567. #define TYPE_SCTP_PRIMITIVE_SEND { \
  568. /* SCTP_STATE_CLOSED */ \
  569. TYPE_SCTP_FUNC(sctp_sf_error_closed), \
  570. /* SCTP_STATE_COOKIE_WAIT */ \
  571. TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
  572. /* SCTP_STATE_COOKIE_ECHOED */ \
  573. TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
  574. /* SCTP_STATE_ESTABLISHED */ \
  575. TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
  576. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  577. TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
  578. /* SCTP_STATE_SHUTDOWN_SENT */ \
  579. TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
  580. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  581. TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
  582. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  583. TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
  584. } /* TYPE_SCTP_PRIMITIVE_SEND */
  585. #define TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT { \
  586. /* SCTP_STATE_CLOSED */ \
  587. TYPE_SCTP_FUNC(sctp_sf_error_closed), \
  588. /* SCTP_STATE_COOKIE_WAIT */ \
  589. TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
  590. /* SCTP_STATE_COOKIE_ECHOED */ \
  591. TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
  592. /* SCTP_STATE_ESTABLISHED */ \
  593. TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
  594. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  595. TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
  596. /* SCTP_STATE_SHUTDOWN_SENT */ \
  597. TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
  598. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  599. TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
  600. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  601. TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
  602. } /* TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT */
  603. #define TYPE_SCTP_PRIMITIVE_ASCONF { \
  604. /* SCTP_STATE_CLOSED */ \
  605. TYPE_SCTP_FUNC(sctp_sf_error_closed), \
  606. /* SCTP_STATE_COOKIE_WAIT */ \
  607. TYPE_SCTP_FUNC(sctp_sf_error_closed), \
  608. /* SCTP_STATE_COOKIE_ECHOED */ \
  609. TYPE_SCTP_FUNC(sctp_sf_error_closed), \
  610. /* SCTP_STATE_ESTABLISHED */ \
  611. TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
  612. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  613. TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
  614. /* SCTP_STATE_SHUTDOWN_SENT */ \
  615. TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
  616. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  617. TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
  618. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  619. TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
  620. } /* TYPE_SCTP_PRIMITIVE_ASCONF */
  621. #define TYPE_SCTP_PRIMITIVE_RECONF { \
  622. /* SCTP_STATE_CLOSED */ \
  623. TYPE_SCTP_FUNC(sctp_sf_error_closed), \
  624. /* SCTP_STATE_COOKIE_WAIT */ \
  625. TYPE_SCTP_FUNC(sctp_sf_error_closed), \
  626. /* SCTP_STATE_COOKIE_ECHOED */ \
  627. TYPE_SCTP_FUNC(sctp_sf_error_closed), \
  628. /* SCTP_STATE_ESTABLISHED */ \
  629. TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
  630. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  631. TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
  632. /* SCTP_STATE_SHUTDOWN_SENT */ \
  633. TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
  634. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  635. TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
  636. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  637. TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
  638. } /* TYPE_SCTP_PRIMITIVE_RECONF */
  639. /* The primary index for this table is the primitive type.
  640. * The secondary index for this table is the state.
  641. */
  642. static const struct sctp_sm_table_entry
  643. primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES] = {
  644. TYPE_SCTP_PRIMITIVE_ASSOCIATE,
  645. TYPE_SCTP_PRIMITIVE_SHUTDOWN,
  646. TYPE_SCTP_PRIMITIVE_ABORT,
  647. TYPE_SCTP_PRIMITIVE_SEND,
  648. TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT,
  649. TYPE_SCTP_PRIMITIVE_ASCONF,
  650. TYPE_SCTP_PRIMITIVE_RECONF,
  651. };
  652. #define TYPE_SCTP_OTHER_NO_PENDING_TSN { \
  653. /* SCTP_STATE_CLOSED */ \
  654. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  655. /* SCTP_STATE_COOKIE_WAIT */ \
  656. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  657. /* SCTP_STATE_COOKIE_ECHOED */ \
  658. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  659. /* SCTP_STATE_ESTABLISHED */ \
  660. TYPE_SCTP_FUNC(sctp_sf_do_no_pending_tsn), \
  661. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  662. TYPE_SCTP_FUNC(sctp_sf_do_9_2_start_shutdown), \
  663. /* SCTP_STATE_SHUTDOWN_SENT */ \
  664. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  665. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  666. TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
  667. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  668. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  669. }
  670. #define TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH { \
  671. /* SCTP_STATE_CLOSED */ \
  672. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  673. /* SCTP_STATE_COOKIE_WAIT */ \
  674. TYPE_SCTP_FUNC(sctp_sf_cookie_wait_icmp_abort), \
  675. /* SCTP_STATE_COOKIE_ECHOED */ \
  676. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  677. /* SCTP_STATE_ESTABLISHED */ \
  678. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  679. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  680. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  681. /* SCTP_STATE_SHUTDOWN_SENT */ \
  682. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  683. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  684. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  685. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  686. TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
  687. }
  688. static const struct sctp_sm_table_entry
  689. other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES] = {
  690. TYPE_SCTP_OTHER_NO_PENDING_TSN,
  691. TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH,
  692. };
  693. #define TYPE_SCTP_EVENT_TIMEOUT_NONE { \
  694. /* SCTP_STATE_CLOSED */ \
  695. TYPE_SCTP_FUNC(sctp_sf_bug), \
  696. /* SCTP_STATE_COOKIE_WAIT */ \
  697. TYPE_SCTP_FUNC(sctp_sf_bug), \
  698. /* SCTP_STATE_COOKIE_ECHOED */ \
  699. TYPE_SCTP_FUNC(sctp_sf_bug), \
  700. /* SCTP_STATE_ESTABLISHED */ \
  701. TYPE_SCTP_FUNC(sctp_sf_bug), \
  702. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  703. TYPE_SCTP_FUNC(sctp_sf_bug), \
  704. /* SCTP_STATE_SHUTDOWN_SENT */ \
  705. TYPE_SCTP_FUNC(sctp_sf_bug), \
  706. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  707. TYPE_SCTP_FUNC(sctp_sf_bug), \
  708. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  709. TYPE_SCTP_FUNC(sctp_sf_bug), \
  710. }
  711. #define TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE { \
  712. /* SCTP_STATE_CLOSED */ \
  713. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  714. /* SCTP_STATE_COOKIE_WAIT */ \
  715. TYPE_SCTP_FUNC(sctp_sf_bug), \
  716. /* SCTP_STATE_COOKIE_ECHOED */ \
  717. TYPE_SCTP_FUNC(sctp_sf_t1_cookie_timer_expire), \
  718. /* SCTP_STATE_ESTABLISHED */ \
  719. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  720. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  721. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  722. /* SCTP_STATE_SHUTDOWN_SENT */ \
  723. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  724. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  725. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  726. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  727. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  728. }
  729. #define TYPE_SCTP_EVENT_TIMEOUT_T1_INIT { \
  730. /* SCTP_STATE_CLOSED */ \
  731. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  732. /* SCTP_STATE_COOKIE_WAIT */ \
  733. TYPE_SCTP_FUNC(sctp_sf_t1_init_timer_expire), \
  734. /* SCTP_STATE_COOKIE_ECHOED */ \
  735. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  736. /* SCTP_STATE_ESTABLISHED */ \
  737. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  738. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  739. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  740. /* SCTP_STATE_SHUTDOWN_SENT */ \
  741. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  742. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  743. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  744. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  745. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  746. }
  747. #define TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN { \
  748. /* SCTP_STATE_CLOSED */ \
  749. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  750. /* SCTP_STATE_COOKIE_WAIT */ \
  751. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  752. /* SCTP_STATE_COOKIE_ECHOED */ \
  753. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  754. /* SCTP_STATE_ESTABLISHED */ \
  755. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  756. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  757. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  758. /* SCTP_STATE_SHUTDOWN_SENT */ \
  759. TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
  760. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  761. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  762. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  763. TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
  764. }
  765. #define TYPE_SCTP_EVENT_TIMEOUT_T3_RTX { \
  766. /* SCTP_STATE_CLOSED */ \
  767. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  768. /* SCTP_STATE_COOKIE_WAIT */ \
  769. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  770. /* SCTP_STATE_COOKIE_ECHOED */ \
  771. TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
  772. /* SCTP_STATE_ESTABLISHED */ \
  773. TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
  774. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  775. TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
  776. /* SCTP_STATE_SHUTDOWN_SENT */ \
  777. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  778. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  779. TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
  780. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  781. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  782. }
  783. #define TYPE_SCTP_EVENT_TIMEOUT_T4_RTO { \
  784. /* SCTP_STATE_CLOSED */ \
  785. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  786. /* SCTP_STATE_COOKIE_WAIT */ \
  787. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  788. /* SCTP_STATE_COOKIE_ECHOED */ \
  789. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  790. /* SCTP_STATE_ESTABLISHED */ \
  791. TYPE_SCTP_FUNC(sctp_sf_t4_timer_expire), \
  792. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  793. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  794. /* SCTP_STATE_SHUTDOWN_SENT */ \
  795. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  796. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  797. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  798. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  799. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  800. }
  801. #define TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD { \
  802. /* SCTP_STATE_CLOSED */ \
  803. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  804. /* SCTP_STATE_COOKIE_WAIT */ \
  805. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  806. /* SCTP_STATE_COOKIE_ECHOED */ \
  807. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  808. /* SCTP_STATE_ESTABLISHED */ \
  809. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  810. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  811. TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
  812. /* SCTP_STATE_SHUTDOWN_SENT */ \
  813. TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
  814. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  815. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  816. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  817. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  818. }
  819. #define TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT { \
  820. /* SCTP_STATE_CLOSED */ \
  821. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  822. /* SCTP_STATE_COOKIE_WAIT */ \
  823. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  824. /* SCTP_STATE_COOKIE_ECHOED */ \
  825. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  826. /* SCTP_STATE_ESTABLISHED */ \
  827. TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
  828. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  829. TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
  830. /* SCTP_STATE_SHUTDOWN_SENT */ \
  831. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  832. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  833. TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
  834. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  835. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  836. }
  837. #define TYPE_SCTP_EVENT_TIMEOUT_SACK { \
  838. /* SCTP_STATE_CLOSED */ \
  839. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  840. /* SCTP_STATE_COOKIE_WAIT */ \
  841. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  842. /* SCTP_STATE_COOKIE_ECHOED */ \
  843. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  844. /* SCTP_STATE_ESTABLISHED */ \
  845. TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
  846. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  847. TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
  848. /* SCTP_STATE_SHUTDOWN_SENT */ \
  849. TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
  850. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  851. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  852. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  853. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  854. }
  855. #define TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE { \
  856. /* SCTP_STATE_CLOSED */ \
  857. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  858. /* SCTP_STATE_COOKIE_WAIT */ \
  859. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  860. /* SCTP_STATE_COOKIE_ECHOED */ \
  861. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  862. /* SCTP_STATE_ESTABLISHED */ \
  863. TYPE_SCTP_FUNC(sctp_sf_autoclose_timer_expire), \
  864. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  865. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  866. /* SCTP_STATE_SHUTDOWN_SENT */ \
  867. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  868. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  869. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  870. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  871. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  872. }
  873. #define TYPE_SCTP_EVENT_TIMEOUT_RECONF { \
  874. /* SCTP_STATE_CLOSED */ \
  875. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  876. /* SCTP_STATE_COOKIE_WAIT */ \
  877. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  878. /* SCTP_STATE_COOKIE_ECHOED */ \
  879. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  880. /* SCTP_STATE_ESTABLISHED */ \
  881. TYPE_SCTP_FUNC(sctp_sf_send_reconf), \
  882. /* SCTP_STATE_SHUTDOWN_PENDING */ \
  883. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  884. /* SCTP_STATE_SHUTDOWN_SENT */ \
  885. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  886. /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
  887. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  888. /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
  889. TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
  890. }
  891. static const struct sctp_sm_table_entry
  892. timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES] = {
  893. TYPE_SCTP_EVENT_TIMEOUT_NONE,
  894. TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE,
  895. TYPE_SCTP_EVENT_TIMEOUT_T1_INIT,
  896. TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN,
  897. TYPE_SCTP_EVENT_TIMEOUT_T3_RTX,
  898. TYPE_SCTP_EVENT_TIMEOUT_T4_RTO,
  899. TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD,
  900. TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT,
  901. TYPE_SCTP_EVENT_TIMEOUT_RECONF,
  902. TYPE_SCTP_EVENT_TIMEOUT_SACK,
  903. TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE,
  904. };
  905. static const struct sctp_sm_table_entry *sctp_chunk_event_lookup(
  906. struct net *net,
  907. enum sctp_cid cid,
  908. enum sctp_state state)
  909. {
  910. if (state > SCTP_STATE_MAX)
  911. return &bug;
  912. if (cid == SCTP_CID_I_DATA)
  913. cid = SCTP_CID_DATA;
  914. if (cid <= SCTP_CID_BASE_MAX)
  915. return &chunk_event_table[cid][state];
  916. switch ((u16)cid) {
  917. case SCTP_CID_FWD_TSN:
  918. case SCTP_CID_I_FWD_TSN:
  919. return &prsctp_chunk_event_table[0][state];
  920. case SCTP_CID_ASCONF:
  921. return &addip_chunk_event_table[0][state];
  922. case SCTP_CID_ASCONF_ACK:
  923. return &addip_chunk_event_table[1][state];
  924. case SCTP_CID_RECONF:
  925. return &reconf_chunk_event_table[0][state];
  926. case SCTP_CID_AUTH:
  927. return &auth_chunk_event_table[0][state];
  928. }
  929. return &chunk_event_table_unknown[state];
  930. }