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
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
29 #include <linux/skbuff.h>
30 #include <net/sctp/sctp.h>
31 #include <net/sctp/sm.h>
32
33 static const struct sctp_sm_table_entry
34 primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES];
35 static const struct sctp_sm_table_entry
36 other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES];
37 static const struct sctp_sm_table_entry
38 timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES];
39
40 static const struct sctp_sm_table_entry *sctp_chunk_event_lookup(
41 struct net *net,
42 enum sctp_cid cid,
43 enum sctp_state state);
44
45
46 static const struct sctp_sm_table_entry bug = {
47 .fn = sctp_sf_bug,
48 .name = "sctp_sf_bug"
49 };
50
51 #define DO_LOOKUP(_max, _type, _table) \
52 ({ \
53 const struct sctp_sm_table_entry *rtn; \
54 \
55 if ((event_subtype._type > (_max))) { \
56 pr_warn("table %p possible attack: event %d exceeds max %d\n", \
57 _table, event_subtype._type, _max); \
58 rtn = &bug; \
59 } else \
60 rtn = &_table[event_subtype._type][(int)state]; \
61 \
62 rtn; \
63 })
64
65 const struct sctp_sm_table_entry *sctp_sm_lookup_event(
66 struct net *net,
67 enum sctp_event_type event_type,
68 enum sctp_state state,
69 union sctp_subtype event_subtype)
70 {
71 switch (event_type) {
72 case SCTP_EVENT_T_CHUNK:
73 return sctp_chunk_event_lookup(net, event_subtype.chunk, state);
74 case SCTP_EVENT_T_TIMEOUT:
75 return DO_LOOKUP(SCTP_EVENT_TIMEOUT_MAX, timeout,
76 timeout_event_table);
77 case SCTP_EVENT_T_OTHER:
78 return DO_LOOKUP(SCTP_EVENT_OTHER_MAX, other,
79 other_event_table);
80 case SCTP_EVENT_T_PRIMITIVE:
81 return DO_LOOKUP(SCTP_EVENT_PRIMITIVE_MAX, primitive,
82 primitive_event_table);
83 default:
84 /* Yikes! We got an illegal event type. */
85 return &bug;
86 }
87 }
88
89 #define TYPE_SCTP_FUNC(func) {.fn = func, .name = #func}
90
91 #define TYPE_SCTP_DATA { \
92 /* SCTP_STATE_CLOSED */ \
93 TYPE_SCTP_FUNC(sctp_sf_ootb), \
94 /* SCTP_STATE_COOKIE_WAIT */ \
95 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
96 /* SCTP_STATE_COOKIE_ECHOED */ \
97 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
98 /* SCTP_STATE_ESTABLISHED */ \
99 TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
100 /* SCTP_STATE_SHUTDOWN_PENDING */ \
101 TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
102 /* SCTP_STATE_SHUTDOWN_SENT */ \
103 TYPE_SCTP_FUNC(sctp_sf_eat_data_fast_4_4), \
104 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
105 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
106 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
107 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
108 } /* TYPE_SCTP_DATA */
109
110 #define TYPE_SCTP_INIT { \
111 /* SCTP_STATE_CLOSED */ \
112 TYPE_SCTP_FUNC(sctp_sf_do_5_1B_init), \
113 /* SCTP_STATE_COOKIE_WAIT */ \
114 TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
115 /* SCTP_STATE_COOKIE_ECHOED */ \
116 TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
117 /* SCTP_STATE_ESTABLISHED */ \
118 TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
119 /* SCTP_STATE_SHUTDOWN_PENDING */ \
120 TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
121 /* SCTP_STATE_SHUTDOWN_SENT */ \
122 TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
123 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
124 TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
125 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
126 TYPE_SCTP_FUNC(sctp_sf_do_9_2_reshutack), \
127 } /* TYPE_SCTP_INIT */
128
129 #define TYPE_SCTP_INIT_ACK { \
130 /* SCTP_STATE_CLOSED */ \
131 TYPE_SCTP_FUNC(sctp_sf_do_5_2_3_initack), \
132 /* SCTP_STATE_COOKIE_WAIT */ \
133 TYPE_SCTP_FUNC(sctp_sf_do_5_1C_ack), \
134 /* SCTP_STATE_COOKIE_ECHOED */ \
135 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
136 /* SCTP_STATE_ESTABLISHED */ \
137 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
138 /* SCTP_STATE_SHUTDOWN_PENDING */ \
139 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
140 /* SCTP_STATE_SHUTDOWN_SENT */ \
141 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
142 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
143 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
144 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
145 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
146 } /* TYPE_SCTP_INIT_ACK */
147
148 #define TYPE_SCTP_SACK { \
149 /* SCTP_STATE_CLOSED */ \
150 TYPE_SCTP_FUNC(sctp_sf_ootb), \
151 /* SCTP_STATE_COOKIE_WAIT */ \
152 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
153 /* SCTP_STATE_COOKIE_ECHOED */ \
154 TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
155 /* SCTP_STATE_ESTABLISHED */ \
156 TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
157 /* SCTP_STATE_SHUTDOWN_PENDING */ \
158 TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
159 /* SCTP_STATE_SHUTDOWN_SENT */ \
160 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
161 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
162 TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
163 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
164 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
165 } /* TYPE_SCTP_SACK */
166
167 #define TYPE_SCTP_HEARTBEAT { \
168 /* SCTP_STATE_CLOSED */ \
169 TYPE_SCTP_FUNC(sctp_sf_ootb), \
170 /* SCTP_STATE_COOKIE_WAIT */ \
171 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
172 /* SCTP_STATE_COOKIE_ECHOED */ \
173 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
174 /* SCTP_STATE_ESTABLISHED */ \
175 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
176 /* SCTP_STATE_SHUTDOWN_PENDING */ \
177 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
178 /* SCTP_STATE_SHUTDOWN_SENT */ \
179 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
180 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
181 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
182 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
183 /* This should not happen, but we are nice. */ \
184 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
185 } /* TYPE_SCTP_HEARTBEAT */
186
187 #define TYPE_SCTP_HEARTBEAT_ACK { \
188 /* SCTP_STATE_CLOSED */ \
189 TYPE_SCTP_FUNC(sctp_sf_ootb), \
190 /* SCTP_STATE_COOKIE_WAIT */ \
191 TYPE_SCTP_FUNC(sctp_sf_violation), \
192 /* SCTP_STATE_COOKIE_ECHOED */ \
193 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
194 /* SCTP_STATE_ESTABLISHED */ \
195 TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
196 /* SCTP_STATE_SHUTDOWN_PENDING */ \
197 TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
198 /* SCTP_STATE_SHUTDOWN_SENT */ \
199 TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
200 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
201 TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
202 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
203 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
204 } /* TYPE_SCTP_HEARTBEAT_ACK */
205
206 #define TYPE_SCTP_ABORT { \
207 /* SCTP_STATE_CLOSED */ \
208 TYPE_SCTP_FUNC(sctp_sf_pdiscard), \
209 /* SCTP_STATE_COOKIE_WAIT */ \
210 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_abort), \
211 /* SCTP_STATE_COOKIE_ECHOED */ \
212 TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_abort), \
213 /* SCTP_STATE_ESTABLISHED */ \
214 TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
215 /* SCTP_STATE_SHUTDOWN_PENDING */ \
216 TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_abort), \
217 /* SCTP_STATE_SHUTDOWN_SENT */ \
218 TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_abort), \
219 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
220 TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
221 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
222 TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_abort), \
223 } /* TYPE_SCTP_ABORT */
224
225 #define TYPE_SCTP_SHUTDOWN { \
226 /* SCTP_STATE_CLOSED */ \
227 TYPE_SCTP_FUNC(sctp_sf_ootb), \
228 /* SCTP_STATE_COOKIE_WAIT */ \
229 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
230 /* SCTP_STATE_COOKIE_ECHOED */ \
231 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
232 /* SCTP_STATE_ESTABLISHED */ \
233 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
234 /* SCTP_STATE_SHUTDOWN_PENDING */ \
235 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
236 /* SCTP_STATE_SHUTDOWN_SENT */ \
237 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
238 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
239 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shut_ctsn), \
240 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
241 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
242 } /* TYPE_SCTP_SHUTDOWN */
243
244 #define TYPE_SCTP_SHUTDOWN_ACK { \
245 /* SCTP_STATE_CLOSED */ \
246 TYPE_SCTP_FUNC(sctp_sf_ootb), \
247 /* SCTP_STATE_COOKIE_WAIT */ \
248 TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
249 /* SCTP_STATE_COOKIE_ECHOED */ \
250 TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
251 /* SCTP_STATE_ESTABLISHED */ \
252 TYPE_SCTP_FUNC(sctp_sf_violation), \
253 /* SCTP_STATE_SHUTDOWN_PENDING */ \
254 TYPE_SCTP_FUNC(sctp_sf_violation), \
255 /* SCTP_STATE_SHUTDOWN_SENT */ \
256 TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
257 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
258 TYPE_SCTP_FUNC(sctp_sf_violation), \
259 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
260 TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
261 } /* TYPE_SCTP_SHUTDOWN_ACK */
262
263 #define TYPE_SCTP_ERROR { \
264 /* SCTP_STATE_CLOSED */ \
265 TYPE_SCTP_FUNC(sctp_sf_ootb), \
266 /* SCTP_STATE_COOKIE_WAIT */ \
267 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
268 /* SCTP_STATE_COOKIE_ECHOED */ \
269 TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_err), \
270 /* SCTP_STATE_ESTABLISHED */ \
271 TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
272 /* SCTP_STATE_SHUTDOWN_PENDING */ \
273 TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
274 /* SCTP_STATE_SHUTDOWN_SENT */ \
275 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
276 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
277 TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
278 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
279 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
280 } /* TYPE_SCTP_ERROR */
281
282 #define TYPE_SCTP_COOKIE_ECHO { \
283 /* SCTP_STATE_CLOSED */ \
284 TYPE_SCTP_FUNC(sctp_sf_do_5_1D_ce), \
285 /* SCTP_STATE_COOKIE_WAIT */ \
286 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
287 /* SCTP_STATE_COOKIE_ECHOED */ \
288 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
289 /* SCTP_STATE_ESTABLISHED */ \
290 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
291 /* SCTP_STATE_SHUTDOWN_PENDING */ \
292 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
293 /* SCTP_STATE_SHUTDOWN_SENT */ \
294 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
295 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
296 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
297 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
298 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
299 } /* TYPE_SCTP_COOKIE_ECHO */
300
301 #define TYPE_SCTP_COOKIE_ACK { \
302 /* SCTP_STATE_CLOSED */ \
303 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
304 /* SCTP_STATE_COOKIE_WAIT */ \
305 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
306 /* SCTP_STATE_COOKIE_ECHOED */ \
307 TYPE_SCTP_FUNC(sctp_sf_do_5_1E_ca), \
308 /* SCTP_STATE_ESTABLISHED */ \
309 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
310 /* SCTP_STATE_SHUTDOWN_PENDING */ \
311 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
312 /* SCTP_STATE_SHUTDOWN_SENT */ \
313 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
314 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
315 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
316 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
317 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
318 } /* TYPE_SCTP_COOKIE_ACK */
319
320 #define TYPE_SCTP_ECN_ECNE { \
321 /* SCTP_STATE_CLOSED */ \
322 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
323 /* SCTP_STATE_COOKIE_WAIT */ \
324 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
325 /* SCTP_STATE_COOKIE_ECHOED */ \
326 TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
327 /* SCTP_STATE_ESTABLISHED */ \
328 TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
329 /* SCTP_STATE_SHUTDOWN_PENDING */ \
330 TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
331 /* SCTP_STATE_SHUTDOWN_SENT */ \
332 TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
333 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
334 TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
335 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
336 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
337 } /* TYPE_SCTP_ECN_ECNE */
338
339 #define TYPE_SCTP_ECN_CWR { \
340 /* SCTP_STATE_CLOSED */ \
341 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
342 /* SCTP_STATE_COOKIE_WAIT */ \
343 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
344 /* SCTP_STATE_COOKIE_ECHOED */ \
345 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
346 /* SCTP_STATE_ESTABLISHED */ \
347 TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
348 /* SCTP_STATE_SHUTDOWN_PENDING */ \
349 TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
350 /* SCTP_STATE_SHUTDOWN_SENT */ \
351 TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
352 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
353 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
354 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
355 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
356 } /* TYPE_SCTP_ECN_CWR */
357
358 #define TYPE_SCTP_SHUTDOWN_COMPLETE { \
359 /* SCTP_STATE_CLOSED */ \
360 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
361 /* SCTP_STATE_COOKIE_WAIT */ \
362 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
363 /* SCTP_STATE_COOKIE_ECHOED */ \
364 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
365 /* SCTP_STATE_ESTABLISHED */ \
366 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
367 /* SCTP_STATE_SHUTDOWN_PENDING */ \
368 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
369 /* SCTP_STATE_SHUTDOWN_SENT */ \
370 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
371 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
372 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
373 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
374 TYPE_SCTP_FUNC(sctp_sf_do_4_C), \
375 } /* TYPE_SCTP_SHUTDOWN_COMPLETE */
376
377 /* The primary index for this table is the chunk type.
378 * The secondary index for this table is the state.
379 *
380 * For base protocol (RFC 2960).
381 */
382 static const struct sctp_sm_table_entry
383 chunk_event_table[SCTP_NUM_BASE_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
384 TYPE_SCTP_DATA,
385 TYPE_SCTP_INIT,
386 TYPE_SCTP_INIT_ACK,
387 TYPE_SCTP_SACK,
388 TYPE_SCTP_HEARTBEAT,
389 TYPE_SCTP_HEARTBEAT_ACK,
390 TYPE_SCTP_ABORT,
391 TYPE_SCTP_SHUTDOWN,
392 TYPE_SCTP_SHUTDOWN_ACK,
393 TYPE_SCTP_ERROR,
394 TYPE_SCTP_COOKIE_ECHO,
395 TYPE_SCTP_COOKIE_ACK,
396 TYPE_SCTP_ECN_ECNE,
397 TYPE_SCTP_ECN_CWR,
398 TYPE_SCTP_SHUTDOWN_COMPLETE,
399 }; /* state_fn_t chunk_event_table[][] */
400
401 #define TYPE_SCTP_ASCONF { \
402 /* SCTP_STATE_CLOSED */ \
403 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
404 /* SCTP_STATE_COOKIE_WAIT */ \
405 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
406 /* SCTP_STATE_COOKIE_ECHOED */ \
407 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
408 /* SCTP_STATE_ESTABLISHED */ \
409 TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
410 /* SCTP_STATE_SHUTDOWN_PENDING */ \
411 TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
412 /* SCTP_STATE_SHUTDOWN_SENT */ \
413 TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
414 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
415 TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
416 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
417 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
418 } /* TYPE_SCTP_ASCONF */
419
420 #define TYPE_SCTP_ASCONF_ACK { \
421 /* SCTP_STATE_CLOSED */ \
422 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
423 /* SCTP_STATE_COOKIE_WAIT */ \
424 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
425 /* SCTP_STATE_COOKIE_ECHOED */ \
426 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
427 /* SCTP_STATE_ESTABLISHED */ \
428 TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
429 /* SCTP_STATE_SHUTDOWN_PENDING */ \
430 TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
431 /* SCTP_STATE_SHUTDOWN_SENT */ \
432 TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
433 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
434 TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
435 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
436 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
437 } /* TYPE_SCTP_ASCONF_ACK */
438
439 /* The primary index for this table is the chunk type.
440 * The secondary index for this table is the state.
441 */
442 static const struct sctp_sm_table_entry
443 addip_chunk_event_table[SCTP_NUM_ADDIP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
444 TYPE_SCTP_ASCONF,
445 TYPE_SCTP_ASCONF_ACK,
446 }; /*state_fn_t addip_chunk_event_table[][] */
447
448 #define TYPE_SCTP_FWD_TSN { \
449 /* SCTP_STATE_CLOSED */ \
450 TYPE_SCTP_FUNC(sctp_sf_ootb), \
451 /* SCTP_STATE_COOKIE_WAIT */ \
452 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
453 /* SCTP_STATE_COOKIE_ECHOED */ \
454 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
455 /* SCTP_STATE_ESTABLISHED */ \
456 TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
457 /* SCTP_STATE_SHUTDOWN_PENDING */ \
458 TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
459 /* SCTP_STATE_SHUTDOWN_SENT */ \
460 TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn_fast), \
461 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
462 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
463 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
464 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
465 } /* TYPE_SCTP_FWD_TSN */
466
467 /* The primary index for this table is the chunk type.
468 * The secondary index for this table is the state.
469 */
470 static const struct sctp_sm_table_entry
471 prsctp_chunk_event_table[SCTP_NUM_PRSCTP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
472 TYPE_SCTP_FWD_TSN,
473 }; /*state_fn_t prsctp_chunk_event_table[][] */
474
475 #define TYPE_SCTP_RECONF { \
476 /* SCTP_STATE_CLOSED */ \
477 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
478 /* SCTP_STATE_COOKIE_WAIT */ \
479 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
480 /* SCTP_STATE_COOKIE_ECHOED */ \
481 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
482 /* SCTP_STATE_ESTABLISHED */ \
483 TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
484 /* SCTP_STATE_SHUTDOWN_PENDING */ \
485 TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
486 /* SCTP_STATE_SHUTDOWN_SENT */ \
487 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
488 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
489 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
490 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
491 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
492 } /* TYPE_SCTP_RECONF */
493
494 /* The primary index for this table is the chunk type.
495 * The secondary index for this table is the state.
496 */
497 static const struct sctp_sm_table_entry
498 reconf_chunk_event_table[SCTP_NUM_RECONF_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
499 TYPE_SCTP_RECONF,
500 }; /*state_fn_t reconf_chunk_event_table[][] */
501
502 #define TYPE_SCTP_AUTH { \
503 /* SCTP_STATE_CLOSED */ \
504 TYPE_SCTP_FUNC(sctp_sf_ootb), \
505 /* SCTP_STATE_COOKIE_WAIT */ \
506 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
507 /* SCTP_STATE_COOKIE_ECHOED */ \
508 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
509 /* SCTP_STATE_ESTABLISHED */ \
510 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
511 /* SCTP_STATE_SHUTDOWN_PENDING */ \
512 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
513 /* SCTP_STATE_SHUTDOWN_SENT */ \
514 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
515 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
516 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
517 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
518 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
519 } /* TYPE_SCTP_AUTH */
520
521 /* The primary index for this table is the chunk type.
522 * The secondary index for this table is the state.
523 */
524 static const struct sctp_sm_table_entry
525 auth_chunk_event_table[SCTP_NUM_AUTH_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
526 TYPE_SCTP_AUTH,
527 }; /*state_fn_t auth_chunk_event_table[][] */
528
529 static const struct sctp_sm_table_entry
530 pad_chunk_event_table[SCTP_STATE_NUM_STATES] = {
531 /* SCTP_STATE_CLOSED */
532 TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
533 /* SCTP_STATE_COOKIE_WAIT */
534 TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
535 /* SCTP_STATE_COOKIE_ECHOED */
536 TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
537 /* SCTP_STATE_ESTABLISHED */
538 TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
539 /* SCTP_STATE_SHUTDOWN_PENDING */
540 TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
541 /* SCTP_STATE_SHUTDOWN_SENT */
542 TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
543 /* SCTP_STATE_SHUTDOWN_RECEIVED */
544 TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
545 /* SCTP_STATE_SHUTDOWN_ACK_SENT */
546 TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
547 }; /* chunk pad */
548
549 static const struct sctp_sm_table_entry
550 chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
551 /* SCTP_STATE_CLOSED */
552 TYPE_SCTP_FUNC(sctp_sf_ootb),
553 /* SCTP_STATE_COOKIE_WAIT */
554 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
555 /* SCTP_STATE_COOKIE_ECHOED */
556 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
557 /* SCTP_STATE_ESTABLISHED */
558 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
559 /* SCTP_STATE_SHUTDOWN_PENDING */
560 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
561 /* SCTP_STATE_SHUTDOWN_SENT */
562 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
563 /* SCTP_STATE_SHUTDOWN_RECEIVED */
564 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
565 /* SCTP_STATE_SHUTDOWN_ACK_SENT */
566 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
567 }; /* chunk unknown */
568
569
570 #define TYPE_SCTP_PRIMITIVE_ASSOCIATE { \
571 /* SCTP_STATE_CLOSED */ \
572 TYPE_SCTP_FUNC(sctp_sf_do_prm_asoc), \
573 /* SCTP_STATE_COOKIE_WAIT */ \
574 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
575 /* SCTP_STATE_COOKIE_ECHOED */ \
576 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
577 /* SCTP_STATE_ESTABLISHED */ \
578 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
579 /* SCTP_STATE_SHUTDOWN_PENDING */ \
580 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
581 /* SCTP_STATE_SHUTDOWN_SENT */ \
582 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
583 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
584 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
585 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
586 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
587 } /* TYPE_SCTP_PRIMITIVE_ASSOCIATE */
588
589 #define TYPE_SCTP_PRIMITIVE_SHUTDOWN { \
590 /* SCTP_STATE_CLOSED */ \
591 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
592 /* SCTP_STATE_COOKIE_WAIT */ \
593 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_shutdown), \
594 /* SCTP_STATE_COOKIE_ECHOED */ \
595 TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_shutdown),\
596 /* SCTP_STATE_ESTABLISHED */ \
597 TYPE_SCTP_FUNC(sctp_sf_do_9_2_prm_shutdown), \
598 /* SCTP_STATE_SHUTDOWN_PENDING */ \
599 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
600 /* SCTP_STATE_SHUTDOWN_SENT */ \
601 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
602 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
603 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
604 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
605 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
606 } /* TYPE_SCTP_PRIMITIVE_SHUTDOWN */
607
608 #define TYPE_SCTP_PRIMITIVE_ABORT { \
609 /* SCTP_STATE_CLOSED */ \
610 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
611 /* SCTP_STATE_COOKIE_WAIT */ \
612 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_abort), \
613 /* SCTP_STATE_COOKIE_ECHOED */ \
614 TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_abort), \
615 /* SCTP_STATE_ESTABLISHED */ \
616 TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
617 /* SCTP_STATE_SHUTDOWN_PENDING */ \
618 TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_prm_abort), \
619 /* SCTP_STATE_SHUTDOWN_SENT */ \
620 TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_prm_abort), \
621 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
622 TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
623 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
624 TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_prm_abort), \
625 } /* TYPE_SCTP_PRIMITIVE_ABORT */
626
627 #define TYPE_SCTP_PRIMITIVE_SEND { \
628 /* SCTP_STATE_CLOSED */ \
629 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
630 /* SCTP_STATE_COOKIE_WAIT */ \
631 TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
632 /* SCTP_STATE_COOKIE_ECHOED */ \
633 TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
634 /* SCTP_STATE_ESTABLISHED */ \
635 TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
636 /* SCTP_STATE_SHUTDOWN_PENDING */ \
637 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
638 /* SCTP_STATE_SHUTDOWN_SENT */ \
639 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
640 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
641 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
642 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
643 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
644 } /* TYPE_SCTP_PRIMITIVE_SEND */
645
646 #define TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT { \
647 /* SCTP_STATE_CLOSED */ \
648 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
649 /* SCTP_STATE_COOKIE_WAIT */ \
650 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
651 /* SCTP_STATE_COOKIE_ECHOED */ \
652 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
653 /* SCTP_STATE_ESTABLISHED */ \
654 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
655 /* SCTP_STATE_SHUTDOWN_PENDING */ \
656 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
657 /* SCTP_STATE_SHUTDOWN_SENT */ \
658 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
659 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
660 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
661 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
662 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
663 } /* TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT */
664
665 #define TYPE_SCTP_PRIMITIVE_ASCONF { \
666 /* SCTP_STATE_CLOSED */ \
667 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
668 /* SCTP_STATE_COOKIE_WAIT */ \
669 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
670 /* SCTP_STATE_COOKIE_ECHOED */ \
671 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
672 /* SCTP_STATE_ESTABLISHED */ \
673 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
674 /* SCTP_STATE_SHUTDOWN_PENDING */ \
675 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
676 /* SCTP_STATE_SHUTDOWN_SENT */ \
677 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
678 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
679 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
680 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
681 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
682 } /* TYPE_SCTP_PRIMITIVE_ASCONF */
683
684 #define TYPE_SCTP_PRIMITIVE_RECONF { \
685 /* SCTP_STATE_CLOSED */ \
686 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
687 /* SCTP_STATE_COOKIE_WAIT */ \
688 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
689 /* SCTP_STATE_COOKIE_ECHOED */ \
690 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
691 /* SCTP_STATE_ESTABLISHED */ \
692 TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
693 /* SCTP_STATE_SHUTDOWN_PENDING */ \
694 TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
695 /* SCTP_STATE_SHUTDOWN_SENT */ \
696 TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
697 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
698 TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
699 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
700 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
701 } /* TYPE_SCTP_PRIMITIVE_RECONF */
702
703 /* The primary index for this table is the primitive type.
704 * The secondary index for this table is the state.
705 */
706 static const struct sctp_sm_table_entry
707 primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES] = {
708 TYPE_SCTP_PRIMITIVE_ASSOCIATE,
709 TYPE_SCTP_PRIMITIVE_SHUTDOWN,
710 TYPE_SCTP_PRIMITIVE_ABORT,
711 TYPE_SCTP_PRIMITIVE_SEND,
712 TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT,
713 TYPE_SCTP_PRIMITIVE_ASCONF,
714 TYPE_SCTP_PRIMITIVE_RECONF,
715 };
716
717 #define TYPE_SCTP_OTHER_NO_PENDING_TSN { \
718 /* SCTP_STATE_CLOSED */ \
719 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
720 /* SCTP_STATE_COOKIE_WAIT */ \
721 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
722 /* SCTP_STATE_COOKIE_ECHOED */ \
723 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
724 /* SCTP_STATE_ESTABLISHED */ \
725 TYPE_SCTP_FUNC(sctp_sf_do_no_pending_tsn), \
726 /* SCTP_STATE_SHUTDOWN_PENDING */ \
727 TYPE_SCTP_FUNC(sctp_sf_do_9_2_start_shutdown), \
728 /* SCTP_STATE_SHUTDOWN_SENT */ \
729 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
730 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
731 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
732 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
733 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
734 }
735
736 #define TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH { \
737 /* SCTP_STATE_CLOSED */ \
738 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
739 /* SCTP_STATE_COOKIE_WAIT */ \
740 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_icmp_abort), \
741 /* SCTP_STATE_COOKIE_ECHOED */ \
742 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
743 /* SCTP_STATE_ESTABLISHED */ \
744 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
745 /* SCTP_STATE_SHUTDOWN_PENDING */ \
746 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
747 /* SCTP_STATE_SHUTDOWN_SENT */ \
748 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
749 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
750 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
751 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
752 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
753 }
754
755 static const struct sctp_sm_table_entry
756 other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES] = {
757 TYPE_SCTP_OTHER_NO_PENDING_TSN,
758 TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH,
759 };
760
761 #define TYPE_SCTP_EVENT_TIMEOUT_NONE { \
762 /* SCTP_STATE_CLOSED */ \
763 TYPE_SCTP_FUNC(sctp_sf_bug), \
764 /* SCTP_STATE_COOKIE_WAIT */ \
765 TYPE_SCTP_FUNC(sctp_sf_bug), \
766 /* SCTP_STATE_COOKIE_ECHOED */ \
767 TYPE_SCTP_FUNC(sctp_sf_bug), \
768 /* SCTP_STATE_ESTABLISHED */ \
769 TYPE_SCTP_FUNC(sctp_sf_bug), \
770 /* SCTP_STATE_SHUTDOWN_PENDING */ \
771 TYPE_SCTP_FUNC(sctp_sf_bug), \
772 /* SCTP_STATE_SHUTDOWN_SENT */ \
773 TYPE_SCTP_FUNC(sctp_sf_bug), \
774 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
775 TYPE_SCTP_FUNC(sctp_sf_bug), \
776 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
777 TYPE_SCTP_FUNC(sctp_sf_bug), \
778 }
779
780 #define TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE { \
781 /* SCTP_STATE_CLOSED */ \
782 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
783 /* SCTP_STATE_COOKIE_WAIT */ \
784 TYPE_SCTP_FUNC(sctp_sf_bug), \
785 /* SCTP_STATE_COOKIE_ECHOED */ \
786 TYPE_SCTP_FUNC(sctp_sf_t1_cookie_timer_expire), \
787 /* SCTP_STATE_ESTABLISHED */ \
788 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
789 /* SCTP_STATE_SHUTDOWN_PENDING */ \
790 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
791 /* SCTP_STATE_SHUTDOWN_SENT */ \
792 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
793 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
794 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
795 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
796 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
797 }
798
799 #define TYPE_SCTP_EVENT_TIMEOUT_T1_INIT { \
800 /* SCTP_STATE_CLOSED */ \
801 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
802 /* SCTP_STATE_COOKIE_WAIT */ \
803 TYPE_SCTP_FUNC(sctp_sf_t1_init_timer_expire), \
804 /* SCTP_STATE_COOKIE_ECHOED */ \
805 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
806 /* SCTP_STATE_ESTABLISHED */ \
807 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
808 /* SCTP_STATE_SHUTDOWN_PENDING */ \
809 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
810 /* SCTP_STATE_SHUTDOWN_SENT */ \
811 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
812 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
813 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
814 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
815 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
816 }
817
818 #define TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN { \
819 /* SCTP_STATE_CLOSED */ \
820 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
821 /* SCTP_STATE_COOKIE_WAIT */ \
822 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
823 /* SCTP_STATE_COOKIE_ECHOED */ \
824 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
825 /* SCTP_STATE_ESTABLISHED */ \
826 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
827 /* SCTP_STATE_SHUTDOWN_PENDING */ \
828 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
829 /* SCTP_STATE_SHUTDOWN_SENT */ \
830 TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
831 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
832 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
833 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
834 TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
835 }
836
837 #define TYPE_SCTP_EVENT_TIMEOUT_T3_RTX { \
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_do_6_3_3_rtx), \
844 /* SCTP_STATE_ESTABLISHED */ \
845 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
846 /* SCTP_STATE_SHUTDOWN_PENDING */ \
847 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
848 /* SCTP_STATE_SHUTDOWN_SENT */ \
849 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
850 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
851 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
852 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
853 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
854 }
855
856 #define TYPE_SCTP_EVENT_TIMEOUT_T4_RTO { \
857 /* SCTP_STATE_CLOSED */ \
858 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
859 /* SCTP_STATE_COOKIE_WAIT */ \
860 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
861 /* SCTP_STATE_COOKIE_ECHOED */ \
862 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
863 /* SCTP_STATE_ESTABLISHED */ \
864 TYPE_SCTP_FUNC(sctp_sf_t4_timer_expire), \
865 /* SCTP_STATE_SHUTDOWN_PENDING */ \
866 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
867 /* SCTP_STATE_SHUTDOWN_SENT */ \
868 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
869 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
870 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
871 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
872 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
873 }
874
875 #define TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD { \
876 /* SCTP_STATE_CLOSED */ \
877 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
878 /* SCTP_STATE_COOKIE_WAIT */ \
879 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
880 /* SCTP_STATE_COOKIE_ECHOED */ \
881 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
882 /* SCTP_STATE_ESTABLISHED */ \
883 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
884 /* SCTP_STATE_SHUTDOWN_PENDING */ \
885 TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
886 /* SCTP_STATE_SHUTDOWN_SENT */ \
887 TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
888 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
889 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
890 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
891 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
892 }
893
894 #define TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT { \
895 /* SCTP_STATE_CLOSED */ \
896 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
897 /* SCTP_STATE_COOKIE_WAIT */ \
898 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
899 /* SCTP_STATE_COOKIE_ECHOED */ \
900 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
901 /* SCTP_STATE_ESTABLISHED */ \
902 TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
903 /* SCTP_STATE_SHUTDOWN_PENDING */ \
904 TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
905 /* SCTP_STATE_SHUTDOWN_SENT */ \
906 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
907 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
908 TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
909 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
910 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
911 }
912
913 #define TYPE_SCTP_EVENT_TIMEOUT_SACK { \
914 /* SCTP_STATE_CLOSED */ \
915 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
916 /* SCTP_STATE_COOKIE_WAIT */ \
917 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
918 /* SCTP_STATE_COOKIE_ECHOED */ \
919 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
920 /* SCTP_STATE_ESTABLISHED */ \
921 TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
922 /* SCTP_STATE_SHUTDOWN_PENDING */ \
923 TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
924 /* SCTP_STATE_SHUTDOWN_SENT */ \
925 TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
926 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
927 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
928 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
929 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
930 }
931
932 #define TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE { \
933 /* SCTP_STATE_CLOSED */ \
934 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
935 /* SCTP_STATE_COOKIE_WAIT */ \
936 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
937 /* SCTP_STATE_COOKIE_ECHOED */ \
938 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
939 /* SCTP_STATE_ESTABLISHED */ \
940 TYPE_SCTP_FUNC(sctp_sf_autoclose_timer_expire), \
941 /* SCTP_STATE_SHUTDOWN_PENDING */ \
942 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
943 /* SCTP_STATE_SHUTDOWN_SENT */ \
944 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
945 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
946 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
947 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
948 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
949 }
950
951 #define TYPE_SCTP_EVENT_TIMEOUT_RECONF { \
952 /* SCTP_STATE_CLOSED */ \
953 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
954 /* SCTP_STATE_COOKIE_WAIT */ \
955 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
956 /* SCTP_STATE_COOKIE_ECHOED */ \
957 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
958 /* SCTP_STATE_ESTABLISHED */ \
959 TYPE_SCTP_FUNC(sctp_sf_send_reconf), \
960 /* SCTP_STATE_SHUTDOWN_PENDING */ \
961 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
962 /* SCTP_STATE_SHUTDOWN_SENT */ \
963 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
964 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
965 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
966 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
967 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
968 }
969
970 #define TYPE_SCTP_EVENT_TIMEOUT_PROBE { \
971 /* SCTP_STATE_CLOSED */ \
972 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
973 /* SCTP_STATE_COOKIE_WAIT */ \
974 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
975 /* SCTP_STATE_COOKIE_ECHOED */ \
976 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
977 /* SCTP_STATE_ESTABLISHED */ \
978 TYPE_SCTP_FUNC(sctp_sf_send_probe), \
979 /* SCTP_STATE_SHUTDOWN_PENDING */ \
980 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
981 /* SCTP_STATE_SHUTDOWN_SENT */ \
982 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
983 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
984 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
985 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
986 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
987 }
988
989 static const struct sctp_sm_table_entry
990 timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES] = {
991 TYPE_SCTP_EVENT_TIMEOUT_NONE,
992 TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE,
993 TYPE_SCTP_EVENT_TIMEOUT_T1_INIT,
994 TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN,
995 TYPE_SCTP_EVENT_TIMEOUT_T3_RTX,
996 TYPE_SCTP_EVENT_TIMEOUT_T4_RTO,
997 TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD,
998 TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT,
999 TYPE_SCTP_EVENT_TIMEOUT_RECONF,
1000 TYPE_SCTP_EVENT_TIMEOUT_PROBE,
1001 TYPE_SCTP_EVENT_TIMEOUT_SACK,
1002 TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE,
1003 };
1004
1005 static const struct sctp_sm_table_entry *sctp_chunk_event_lookup(
1006 struct net *net,
1007 enum sctp_cid cid,
1008 enum sctp_state state)
1009 {
1010 if (state > SCTP_STATE_MAX)
1011 return &bug;
1012
1013 if (cid == SCTP_CID_I_DATA)
1014 cid = SCTP_CID_DATA;
1015
1016 if (cid <= SCTP_CID_BASE_MAX)
1017 return &chunk_event_table[cid][state];
1018
1019 switch ((u16)cid) {
1020 case SCTP_CID_FWD_TSN:
1021 case SCTP_CID_I_FWD_TSN:
1022 return &prsctp_chunk_event_table[0][state];
1023
1024 case SCTP_CID_ASCONF:
1025 return &addip_chunk_event_table[0][state];
1026
1027 case SCTP_CID_ASCONF_ACK:
1028 return &addip_chunk_event_table[1][state];
1029
1030 case SCTP_CID_RECONF:
1031 return &reconf_chunk_event_table[0][state];
1032
1033 case SCTP_CID_AUTH:
1034 return &auth_chunk_event_table[0][state];
1035
1036 case SCTP_CID_PAD:
1037 return &pad_chunk_event_table[state];
1038 }
1039
1040 return &chunk_event_table_unknown[state];
1041 }
1042
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