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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
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
33static const struct sctp_sm_table_entry
34primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES];
35static const struct sctp_sm_table_entry
36other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES];
37static const struct sctp_sm_table_entry
38timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES];
39
40static 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
46static 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
65const 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 */
382static const struct sctp_sm_table_entry
383chunk_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 */
442static const struct sctp_sm_table_entry
443addip_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 */
470static const struct sctp_sm_table_entry
471prsctp_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 */
497static const struct sctp_sm_table_entry
498reconf_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 */
524static const struct sctp_sm_table_entry
525auth_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
529static const struct sctp_sm_table_entry
530chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
531 /* SCTP_STATE_CLOSED */
532 TYPE_SCTP_FUNC(sctp_sf_ootb),
533 /* SCTP_STATE_COOKIE_WAIT */
534 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
535 /* SCTP_STATE_COOKIE_ECHOED */
536 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
537 /* SCTP_STATE_ESTABLISHED */
538 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
539 /* SCTP_STATE_SHUTDOWN_PENDING */
540 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
541 /* SCTP_STATE_SHUTDOWN_SENT */
542 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
543 /* SCTP_STATE_SHUTDOWN_RECEIVED */
544 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
545 /* SCTP_STATE_SHUTDOWN_ACK_SENT */
546 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
547}; /* chunk unknown */
548
549
550#define TYPE_SCTP_PRIMITIVE_ASSOCIATE { \
551 /* SCTP_STATE_CLOSED */ \
552 TYPE_SCTP_FUNC(sctp_sf_do_prm_asoc), \
553 /* SCTP_STATE_COOKIE_WAIT */ \
554 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
555 /* SCTP_STATE_COOKIE_ECHOED */ \
556 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
557 /* SCTP_STATE_ESTABLISHED */ \
558 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
559 /* SCTP_STATE_SHUTDOWN_PENDING */ \
560 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
561 /* SCTP_STATE_SHUTDOWN_SENT */ \
562 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
563 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
564 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
565 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
566 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
567} /* TYPE_SCTP_PRIMITIVE_ASSOCIATE */
568
569#define TYPE_SCTP_PRIMITIVE_SHUTDOWN { \
570 /* SCTP_STATE_CLOSED */ \
571 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
572 /* SCTP_STATE_COOKIE_WAIT */ \
573 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_shutdown), \
574 /* SCTP_STATE_COOKIE_ECHOED */ \
575 TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_shutdown),\
576 /* SCTP_STATE_ESTABLISHED */ \
577 TYPE_SCTP_FUNC(sctp_sf_do_9_2_prm_shutdown), \
578 /* SCTP_STATE_SHUTDOWN_PENDING */ \
579 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
580 /* SCTP_STATE_SHUTDOWN_SENT */ \
581 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
582 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
583 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
584 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
585 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
586} /* TYPE_SCTP_PRIMITIVE_SHUTDOWN */
587
588#define TYPE_SCTP_PRIMITIVE_ABORT { \
589 /* SCTP_STATE_CLOSED */ \
590 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
591 /* SCTP_STATE_COOKIE_WAIT */ \
592 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_abort), \
593 /* SCTP_STATE_COOKIE_ECHOED */ \
594 TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_abort), \
595 /* SCTP_STATE_ESTABLISHED */ \
596 TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
597 /* SCTP_STATE_SHUTDOWN_PENDING */ \
598 TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_prm_abort), \
599 /* SCTP_STATE_SHUTDOWN_SENT */ \
600 TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_prm_abort), \
601 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
602 TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
603 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
604 TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_prm_abort), \
605} /* TYPE_SCTP_PRIMITIVE_ABORT */
606
607#define TYPE_SCTP_PRIMITIVE_SEND { \
608 /* SCTP_STATE_CLOSED */ \
609 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
610 /* SCTP_STATE_COOKIE_WAIT */ \
611 TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
612 /* SCTP_STATE_COOKIE_ECHOED */ \
613 TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
614 /* SCTP_STATE_ESTABLISHED */ \
615 TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
616 /* SCTP_STATE_SHUTDOWN_PENDING */ \
617 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
618 /* SCTP_STATE_SHUTDOWN_SENT */ \
619 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
620 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
621 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
622 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
623 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
624} /* TYPE_SCTP_PRIMITIVE_SEND */
625
626#define TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT { \
627 /* SCTP_STATE_CLOSED */ \
628 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
629 /* SCTP_STATE_COOKIE_WAIT */ \
630 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
631 /* SCTP_STATE_COOKIE_ECHOED */ \
632 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
633 /* SCTP_STATE_ESTABLISHED */ \
634 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
635 /* SCTP_STATE_SHUTDOWN_PENDING */ \
636 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
637 /* SCTP_STATE_SHUTDOWN_SENT */ \
638 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
639 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
640 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
641 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
642 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
643} /* TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT */
644
645#define TYPE_SCTP_PRIMITIVE_ASCONF { \
646 /* SCTP_STATE_CLOSED */ \
647 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
648 /* SCTP_STATE_COOKIE_WAIT */ \
649 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
650 /* SCTP_STATE_COOKIE_ECHOED */ \
651 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
652 /* SCTP_STATE_ESTABLISHED */ \
653 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
654 /* SCTP_STATE_SHUTDOWN_PENDING */ \
655 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
656 /* SCTP_STATE_SHUTDOWN_SENT */ \
657 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
658 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
659 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
660 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
661 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
662} /* TYPE_SCTP_PRIMITIVE_ASCONF */
663
664#define TYPE_SCTP_PRIMITIVE_RECONF { \
665 /* SCTP_STATE_CLOSED */ \
666 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
667 /* SCTP_STATE_COOKIE_WAIT */ \
668 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
669 /* SCTP_STATE_COOKIE_ECHOED */ \
670 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
671 /* SCTP_STATE_ESTABLISHED */ \
672 TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
673 /* SCTP_STATE_SHUTDOWN_PENDING */ \
674 TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
675 /* SCTP_STATE_SHUTDOWN_SENT */ \
676 TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
677 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
678 TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
679 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
680 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
681} /* TYPE_SCTP_PRIMITIVE_RECONF */
682
683/* The primary index for this table is the primitive type.
684 * The secondary index for this table is the state.
685 */
686static const struct sctp_sm_table_entry
687primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES] = {
688 TYPE_SCTP_PRIMITIVE_ASSOCIATE,
689 TYPE_SCTP_PRIMITIVE_SHUTDOWN,
690 TYPE_SCTP_PRIMITIVE_ABORT,
691 TYPE_SCTP_PRIMITIVE_SEND,
692 TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT,
693 TYPE_SCTP_PRIMITIVE_ASCONF,
694 TYPE_SCTP_PRIMITIVE_RECONF,
695};
696
697#define TYPE_SCTP_OTHER_NO_PENDING_TSN { \
698 /* SCTP_STATE_CLOSED */ \
699 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
700 /* SCTP_STATE_COOKIE_WAIT */ \
701 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
702 /* SCTP_STATE_COOKIE_ECHOED */ \
703 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
704 /* SCTP_STATE_ESTABLISHED */ \
705 TYPE_SCTP_FUNC(sctp_sf_do_no_pending_tsn), \
706 /* SCTP_STATE_SHUTDOWN_PENDING */ \
707 TYPE_SCTP_FUNC(sctp_sf_do_9_2_start_shutdown), \
708 /* SCTP_STATE_SHUTDOWN_SENT */ \
709 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
710 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
711 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
712 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
713 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
714}
715
716#define TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH { \
717 /* SCTP_STATE_CLOSED */ \
718 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
719 /* SCTP_STATE_COOKIE_WAIT */ \
720 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_icmp_abort), \
721 /* SCTP_STATE_COOKIE_ECHOED */ \
722 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
723 /* SCTP_STATE_ESTABLISHED */ \
724 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
725 /* SCTP_STATE_SHUTDOWN_PENDING */ \
726 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
727 /* SCTP_STATE_SHUTDOWN_SENT */ \
728 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
729 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
730 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
731 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
732 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
733}
734
735static const struct sctp_sm_table_entry
736other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES] = {
737 TYPE_SCTP_OTHER_NO_PENDING_TSN,
738 TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH,
739};
740
741#define TYPE_SCTP_EVENT_TIMEOUT_NONE { \
742 /* SCTP_STATE_CLOSED */ \
743 TYPE_SCTP_FUNC(sctp_sf_bug), \
744 /* SCTP_STATE_COOKIE_WAIT */ \
745 TYPE_SCTP_FUNC(sctp_sf_bug), \
746 /* SCTP_STATE_COOKIE_ECHOED */ \
747 TYPE_SCTP_FUNC(sctp_sf_bug), \
748 /* SCTP_STATE_ESTABLISHED */ \
749 TYPE_SCTP_FUNC(sctp_sf_bug), \
750 /* SCTP_STATE_SHUTDOWN_PENDING */ \
751 TYPE_SCTP_FUNC(sctp_sf_bug), \
752 /* SCTP_STATE_SHUTDOWN_SENT */ \
753 TYPE_SCTP_FUNC(sctp_sf_bug), \
754 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
755 TYPE_SCTP_FUNC(sctp_sf_bug), \
756 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
757 TYPE_SCTP_FUNC(sctp_sf_bug), \
758}
759
760#define TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE { \
761 /* SCTP_STATE_CLOSED */ \
762 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
763 /* SCTP_STATE_COOKIE_WAIT */ \
764 TYPE_SCTP_FUNC(sctp_sf_bug), \
765 /* SCTP_STATE_COOKIE_ECHOED */ \
766 TYPE_SCTP_FUNC(sctp_sf_t1_cookie_timer_expire), \
767 /* SCTP_STATE_ESTABLISHED */ \
768 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
769 /* SCTP_STATE_SHUTDOWN_PENDING */ \
770 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
771 /* SCTP_STATE_SHUTDOWN_SENT */ \
772 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
773 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
774 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
775 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
776 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
777}
778
779#define TYPE_SCTP_EVENT_TIMEOUT_T1_INIT { \
780 /* SCTP_STATE_CLOSED */ \
781 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
782 /* SCTP_STATE_COOKIE_WAIT */ \
783 TYPE_SCTP_FUNC(sctp_sf_t1_init_timer_expire), \
784 /* SCTP_STATE_COOKIE_ECHOED */ \
785 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
786 /* SCTP_STATE_ESTABLISHED */ \
787 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
788 /* SCTP_STATE_SHUTDOWN_PENDING */ \
789 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
790 /* SCTP_STATE_SHUTDOWN_SENT */ \
791 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
792 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
793 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
794 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
795 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
796}
797
798#define TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN { \
799 /* SCTP_STATE_CLOSED */ \
800 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
801 /* SCTP_STATE_COOKIE_WAIT */ \
802 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
803 /* SCTP_STATE_COOKIE_ECHOED */ \
804 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
805 /* SCTP_STATE_ESTABLISHED */ \
806 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
807 /* SCTP_STATE_SHUTDOWN_PENDING */ \
808 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
809 /* SCTP_STATE_SHUTDOWN_SENT */ \
810 TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
811 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
812 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
813 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
814 TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
815}
816
817#define TYPE_SCTP_EVENT_TIMEOUT_T3_RTX { \
818 /* SCTP_STATE_CLOSED */ \
819 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
820 /* SCTP_STATE_COOKIE_WAIT */ \
821 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
822 /* SCTP_STATE_COOKIE_ECHOED */ \
823 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
824 /* SCTP_STATE_ESTABLISHED */ \
825 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
826 /* SCTP_STATE_SHUTDOWN_PENDING */ \
827 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
828 /* SCTP_STATE_SHUTDOWN_SENT */ \
829 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
830 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
831 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
832 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
833 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
834}
835
836#define TYPE_SCTP_EVENT_TIMEOUT_T4_RTO { \
837 /* SCTP_STATE_CLOSED */ \
838 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
839 /* SCTP_STATE_COOKIE_WAIT */ \
840 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
841 /* SCTP_STATE_COOKIE_ECHOED */ \
842 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
843 /* SCTP_STATE_ESTABLISHED */ \
844 TYPE_SCTP_FUNC(sctp_sf_t4_timer_expire), \
845 /* SCTP_STATE_SHUTDOWN_PENDING */ \
846 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
847 /* SCTP_STATE_SHUTDOWN_SENT */ \
848 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
849 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
850 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
851 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
852 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
853}
854
855#define TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD { \
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_timer_ignore), \
864 /* SCTP_STATE_SHUTDOWN_PENDING */ \
865 TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
866 /* SCTP_STATE_SHUTDOWN_SENT */ \
867 TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
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
874#define TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT { \
875 /* SCTP_STATE_CLOSED */ \
876 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
877 /* SCTP_STATE_COOKIE_WAIT */ \
878 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
879 /* SCTP_STATE_COOKIE_ECHOED */ \
880 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
881 /* SCTP_STATE_ESTABLISHED */ \
882 TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
883 /* SCTP_STATE_SHUTDOWN_PENDING */ \
884 TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
885 /* SCTP_STATE_SHUTDOWN_SENT */ \
886 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
887 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
888 TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
889 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
890 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
891}
892
893#define TYPE_SCTP_EVENT_TIMEOUT_SACK { \
894 /* SCTP_STATE_CLOSED */ \
895 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
896 /* SCTP_STATE_COOKIE_WAIT */ \
897 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
898 /* SCTP_STATE_COOKIE_ECHOED */ \
899 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
900 /* SCTP_STATE_ESTABLISHED */ \
901 TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
902 /* SCTP_STATE_SHUTDOWN_PENDING */ \
903 TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
904 /* SCTP_STATE_SHUTDOWN_SENT */ \
905 TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
906 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
907 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
908 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
909 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
910}
911
912#define TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE { \
913 /* SCTP_STATE_CLOSED */ \
914 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
915 /* SCTP_STATE_COOKIE_WAIT */ \
916 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
917 /* SCTP_STATE_COOKIE_ECHOED */ \
918 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
919 /* SCTP_STATE_ESTABLISHED */ \
920 TYPE_SCTP_FUNC(sctp_sf_autoclose_timer_expire), \
921 /* SCTP_STATE_SHUTDOWN_PENDING */ \
922 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
923 /* SCTP_STATE_SHUTDOWN_SENT */ \
924 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
925 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
926 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
927 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
928 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
929}
930
931#define TYPE_SCTP_EVENT_TIMEOUT_RECONF { \
932 /* SCTP_STATE_CLOSED */ \
933 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
934 /* SCTP_STATE_COOKIE_WAIT */ \
935 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
936 /* SCTP_STATE_COOKIE_ECHOED */ \
937 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
938 /* SCTP_STATE_ESTABLISHED */ \
939 TYPE_SCTP_FUNC(sctp_sf_send_reconf), \
940 /* SCTP_STATE_SHUTDOWN_PENDING */ \
941 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
942 /* SCTP_STATE_SHUTDOWN_SENT */ \
943 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
944 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
945 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
946 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
947 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
948}
949
950static const struct sctp_sm_table_entry
951timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES] = {
952 TYPE_SCTP_EVENT_TIMEOUT_NONE,
953 TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE,
954 TYPE_SCTP_EVENT_TIMEOUT_T1_INIT,
955 TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN,
956 TYPE_SCTP_EVENT_TIMEOUT_T3_RTX,
957 TYPE_SCTP_EVENT_TIMEOUT_T4_RTO,
958 TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD,
959 TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT,
960 TYPE_SCTP_EVENT_TIMEOUT_RECONF,
961 TYPE_SCTP_EVENT_TIMEOUT_SACK,
962 TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE,
963};
964
965static const struct sctp_sm_table_entry *sctp_chunk_event_lookup(
966 struct net *net,
967 enum sctp_cid cid,
968 enum sctp_state state)
969{
970 if (state > SCTP_STATE_MAX)
971 return &bug;
972
973 if (cid == SCTP_CID_I_DATA)
974 cid = SCTP_CID_DATA;
975
976 if (cid <= SCTP_CID_BASE_MAX)
977 return &chunk_event_table[cid][state];
978
979 switch ((u16)cid) {
980 case SCTP_CID_FWD_TSN:
981 case SCTP_CID_I_FWD_TSN:
982 return &prsctp_chunk_event_table[0][state];
983
984 case SCTP_CID_ASCONF:
985 return &addip_chunk_event_table[0][state];
986
987 case SCTP_CID_ASCONF_ACK:
988 return &addip_chunk_event_table[1][state];
989
990 case SCTP_CID_RECONF:
991 return &reconf_chunk_event_table[0][state];
992
993 case SCTP_CID_AUTH:
994 return &auth_chunk_event_table[0][state];
995 }
996
997 return &chunk_event_table_unknown[state];
998}
1/* SCTP kernel implementation
2 * (C) Copyright IBM Corp. 2001, 2004
3 * Copyright (c) 1999-2000 Cisco, Inc.
4 * Copyright (c) 1999-2001 Motorola, Inc.
5 * Copyright (c) 2001 Intel Corp.
6 * Copyright (c) 2001 Nokia, Inc.
7 *
8 * This file is part of the SCTP kernel implementation
9 *
10 * These are the state tables for the SCTP state machine.
11 *
12 * This SCTP implementation is free software;
13 * you can redistribute it and/or modify it under the terms of
14 * the GNU General Public License as published by
15 * the Free Software Foundation; either version 2, or (at your option)
16 * any later version.
17 *
18 * This SCTP implementation is distributed in the hope that it
19 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
20 * ************************
21 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
22 * See the GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with GNU CC; see the file COPYING. If not, write to
26 * the Free Software Foundation, 59 Temple Place - Suite 330,
27 * Boston, MA 02111-1307, USA.
28 *
29 * Please send any bug reports or fixes you make to the
30 * email address(es):
31 * lksctp developers <lksctp-developers@lists.sourceforge.net>
32 *
33 * Or submit a bug report through the following website:
34 * http://www.sf.net/projects/lksctp
35 *
36 * Written or modified by:
37 * La Monte H.P. Yarroll <piggy@acm.org>
38 * Karl Knutson <karl@athena.chicago.il.us>
39 * Jon Grimm <jgrimm@us.ibm.com>
40 * Hui Huang <hui.huang@nokia.com>
41 * Daisy Chang <daisyc@us.ibm.com>
42 * Ardelle Fan <ardelle.fan@intel.com>
43 * Sridhar Samudrala <sri@us.ibm.com>
44 *
45 * Any bugs reported given to us we will try to fix... any fixes shared will
46 * be incorporated into the next SCTP release.
47 */
48
49#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
50
51#include <linux/skbuff.h>
52#include <net/sctp/sctp.h>
53#include <net/sctp/sm.h>
54
55static const sctp_sm_table_entry_t
56primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES];
57static const sctp_sm_table_entry_t
58other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES];
59static const sctp_sm_table_entry_t
60timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES];
61
62static const sctp_sm_table_entry_t *sctp_chunk_event_lookup(sctp_cid_t cid,
63 sctp_state_t state);
64
65
66static const sctp_sm_table_entry_t bug = {
67 .fn = sctp_sf_bug,
68 .name = "sctp_sf_bug"
69};
70
71#define DO_LOOKUP(_max, _type, _table) \
72({ \
73 const sctp_sm_table_entry_t *rtn; \
74 \
75 if ((event_subtype._type > (_max))) { \
76 pr_warn("table %p possible attack: event %d exceeds max %d\n", \
77 _table, event_subtype._type, _max); \
78 rtn = &bug; \
79 } else \
80 rtn = &_table[event_subtype._type][(int)state]; \
81 \
82 rtn; \
83})
84
85const sctp_sm_table_entry_t *sctp_sm_lookup_event(sctp_event_t event_type,
86 sctp_state_t state,
87 sctp_subtype_t event_subtype)
88{
89 switch (event_type) {
90 case SCTP_EVENT_T_CHUNK:
91 return sctp_chunk_event_lookup(event_subtype.chunk, state);
92 case SCTP_EVENT_T_TIMEOUT:
93 return DO_LOOKUP(SCTP_EVENT_TIMEOUT_MAX, timeout,
94 timeout_event_table);
95 case SCTP_EVENT_T_OTHER:
96 return DO_LOOKUP(SCTP_EVENT_OTHER_MAX, other,
97 other_event_table);
98 case SCTP_EVENT_T_PRIMITIVE:
99 return DO_LOOKUP(SCTP_EVENT_PRIMITIVE_MAX, primitive,
100 primitive_event_table);
101 default:
102 /* Yikes! We got an illegal event type. */
103 return &bug;
104 }
105}
106
107#define TYPE_SCTP_FUNC(func) {.fn = func, .name = #func}
108
109#define TYPE_SCTP_DATA { \
110 /* SCTP_STATE_CLOSED */ \
111 TYPE_SCTP_FUNC(sctp_sf_ootb), \
112 /* SCTP_STATE_COOKIE_WAIT */ \
113 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
114 /* SCTP_STATE_COOKIE_ECHOED */ \
115 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
116 /* SCTP_STATE_ESTABLISHED */ \
117 TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
118 /* SCTP_STATE_SHUTDOWN_PENDING */ \
119 TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
120 /* SCTP_STATE_SHUTDOWN_SENT */ \
121 TYPE_SCTP_FUNC(sctp_sf_eat_data_fast_4_4), \
122 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
123 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
124 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
125 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
126} /* TYPE_SCTP_DATA */
127
128#define TYPE_SCTP_INIT { \
129 /* SCTP_STATE_CLOSED */ \
130 TYPE_SCTP_FUNC(sctp_sf_do_5_1B_init), \
131 /* SCTP_STATE_COOKIE_WAIT */ \
132 TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
133 /* SCTP_STATE_COOKIE_ECHOED */ \
134 TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
135 /* SCTP_STATE_ESTABLISHED */ \
136 TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
137 /* SCTP_STATE_SHUTDOWN_PENDING */ \
138 TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
139 /* SCTP_STATE_SHUTDOWN_SENT */ \
140 TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
141 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
142 TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
143 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
144 TYPE_SCTP_FUNC(sctp_sf_do_9_2_reshutack), \
145} /* TYPE_SCTP_INIT */
146
147#define TYPE_SCTP_INIT_ACK { \
148 /* SCTP_STATE_CLOSED */ \
149 TYPE_SCTP_FUNC(sctp_sf_do_5_2_3_initack), \
150 /* SCTP_STATE_COOKIE_WAIT */ \
151 TYPE_SCTP_FUNC(sctp_sf_do_5_1C_ack), \
152 /* SCTP_STATE_COOKIE_ECHOED */ \
153 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
154 /* SCTP_STATE_ESTABLISHED */ \
155 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
156 /* SCTP_STATE_SHUTDOWN_PENDING */ \
157 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
158 /* SCTP_STATE_SHUTDOWN_SENT */ \
159 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
160 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
161 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
162 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
163 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
164} /* TYPE_SCTP_INIT_ACK */
165
166#define TYPE_SCTP_SACK { \
167 /* SCTP_STATE_CLOSED */ \
168 TYPE_SCTP_FUNC(sctp_sf_ootb), \
169 /* SCTP_STATE_COOKIE_WAIT */ \
170 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
171 /* SCTP_STATE_COOKIE_ECHOED */ \
172 TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
173 /* SCTP_STATE_ESTABLISHED */ \
174 TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
175 /* SCTP_STATE_SHUTDOWN_PENDING */ \
176 TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
177 /* SCTP_STATE_SHUTDOWN_SENT */ \
178 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
179 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
180 TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
181 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
182 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
183} /* TYPE_SCTP_SACK */
184
185#define TYPE_SCTP_HEARTBEAT { \
186 /* SCTP_STATE_CLOSED */ \
187 TYPE_SCTP_FUNC(sctp_sf_ootb), \
188 /* SCTP_STATE_COOKIE_WAIT */ \
189 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
190 /* SCTP_STATE_COOKIE_ECHOED */ \
191 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
192 /* SCTP_STATE_ESTABLISHED */ \
193 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
194 /* SCTP_STATE_SHUTDOWN_PENDING */ \
195 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
196 /* SCTP_STATE_SHUTDOWN_SENT */ \
197 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
198 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
199 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
200 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
201 /* This should not happen, but we are nice. */ \
202 TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
203} /* TYPE_SCTP_HEARTBEAT */
204
205#define TYPE_SCTP_HEARTBEAT_ACK { \
206 /* SCTP_STATE_CLOSED */ \
207 TYPE_SCTP_FUNC(sctp_sf_ootb), \
208 /* SCTP_STATE_COOKIE_WAIT */ \
209 TYPE_SCTP_FUNC(sctp_sf_violation), \
210 /* SCTP_STATE_COOKIE_ECHOED */ \
211 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
212 /* SCTP_STATE_ESTABLISHED */ \
213 TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
214 /* SCTP_STATE_SHUTDOWN_PENDING */ \
215 TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
216 /* SCTP_STATE_SHUTDOWN_SENT */ \
217 TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
218 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
219 TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
220 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
221 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
222} /* TYPE_SCTP_HEARTBEAT_ACK */
223
224#define TYPE_SCTP_ABORT { \
225 /* SCTP_STATE_CLOSED */ \
226 TYPE_SCTP_FUNC(sctp_sf_pdiscard), \
227 /* SCTP_STATE_COOKIE_WAIT */ \
228 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_abort), \
229 /* SCTP_STATE_COOKIE_ECHOED */ \
230 TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_abort), \
231 /* SCTP_STATE_ESTABLISHED */ \
232 TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
233 /* SCTP_STATE_SHUTDOWN_PENDING */ \
234 TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_abort), \
235 /* SCTP_STATE_SHUTDOWN_SENT */ \
236 TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_abort), \
237 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
238 TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
239 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
240 TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_abort), \
241} /* TYPE_SCTP_ABORT */
242
243#define TYPE_SCTP_SHUTDOWN { \
244 /* SCTP_STATE_CLOSED */ \
245 TYPE_SCTP_FUNC(sctp_sf_ootb), \
246 /* SCTP_STATE_COOKIE_WAIT */ \
247 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
248 /* SCTP_STATE_COOKIE_ECHOED */ \
249 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
250 /* SCTP_STATE_ESTABLISHED */ \
251 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
252 /* SCTP_STATE_SHUTDOWN_PENDING */ \
253 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
254 /* SCTP_STATE_SHUTDOWN_SENT */ \
255 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
256 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
257 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shut_ctsn), \
258 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
259 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
260} /* TYPE_SCTP_SHUTDOWN */
261
262#define TYPE_SCTP_SHUTDOWN_ACK { \
263 /* SCTP_STATE_CLOSED */ \
264 TYPE_SCTP_FUNC(sctp_sf_ootb), \
265 /* SCTP_STATE_COOKIE_WAIT */ \
266 TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
267 /* SCTP_STATE_COOKIE_ECHOED */ \
268 TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
269 /* SCTP_STATE_ESTABLISHED */ \
270 TYPE_SCTP_FUNC(sctp_sf_violation), \
271 /* SCTP_STATE_SHUTDOWN_PENDING */ \
272 TYPE_SCTP_FUNC(sctp_sf_violation), \
273 /* SCTP_STATE_SHUTDOWN_SENT */ \
274 TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
275 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
276 TYPE_SCTP_FUNC(sctp_sf_violation), \
277 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
278 TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
279} /* TYPE_SCTP_SHUTDOWN_ACK */
280
281#define TYPE_SCTP_ERROR { \
282 /* SCTP_STATE_CLOSED */ \
283 TYPE_SCTP_FUNC(sctp_sf_ootb), \
284 /* SCTP_STATE_COOKIE_WAIT */ \
285 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
286 /* SCTP_STATE_COOKIE_ECHOED */ \
287 TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_err), \
288 /* SCTP_STATE_ESTABLISHED */ \
289 TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
290 /* SCTP_STATE_SHUTDOWN_PENDING */ \
291 TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
292 /* SCTP_STATE_SHUTDOWN_SENT */ \
293 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
294 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
295 TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
296 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
297 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
298} /* TYPE_SCTP_ERROR */
299
300#define TYPE_SCTP_COOKIE_ECHO { \
301 /* SCTP_STATE_CLOSED */ \
302 TYPE_SCTP_FUNC(sctp_sf_do_5_1D_ce), \
303 /* SCTP_STATE_COOKIE_WAIT */ \
304 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
305 /* SCTP_STATE_COOKIE_ECHOED */ \
306 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
307 /* SCTP_STATE_ESTABLISHED */ \
308 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
309 /* SCTP_STATE_SHUTDOWN_PENDING */ \
310 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
311 /* SCTP_STATE_SHUTDOWN_SENT */ \
312 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
313 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
314 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
315 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
316 TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
317} /* TYPE_SCTP_COOKIE_ECHO */
318
319#define TYPE_SCTP_COOKIE_ACK { \
320 /* SCTP_STATE_CLOSED */ \
321 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
322 /* SCTP_STATE_COOKIE_WAIT */ \
323 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
324 /* SCTP_STATE_COOKIE_ECHOED */ \
325 TYPE_SCTP_FUNC(sctp_sf_do_5_1E_ca), \
326 /* SCTP_STATE_ESTABLISHED */ \
327 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
328 /* SCTP_STATE_SHUTDOWN_PENDING */ \
329 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
330 /* SCTP_STATE_SHUTDOWN_SENT */ \
331 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
332 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
333 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
334 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
335 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
336} /* TYPE_SCTP_COOKIE_ACK */
337
338#define TYPE_SCTP_ECN_ECNE { \
339 /* SCTP_STATE_CLOSED */ \
340 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
341 /* SCTP_STATE_COOKIE_WAIT */ \
342 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
343 /* SCTP_STATE_COOKIE_ECHOED */ \
344 TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
345 /* SCTP_STATE_ESTABLISHED */ \
346 TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
347 /* SCTP_STATE_SHUTDOWN_PENDING */ \
348 TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
349 /* SCTP_STATE_SHUTDOWN_SENT */ \
350 TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
351 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
352 TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
353 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
354 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
355} /* TYPE_SCTP_ECN_ECNE */
356
357#define TYPE_SCTP_ECN_CWR { \
358 /* SCTP_STATE_CLOSED */ \
359 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
360 /* SCTP_STATE_COOKIE_WAIT */ \
361 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
362 /* SCTP_STATE_COOKIE_ECHOED */ \
363 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
364 /* SCTP_STATE_ESTABLISHED */ \
365 TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
366 /* SCTP_STATE_SHUTDOWN_PENDING */ \
367 TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
368 /* SCTP_STATE_SHUTDOWN_SENT */ \
369 TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
370 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
371 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
372 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
373 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
374} /* TYPE_SCTP_ECN_CWR */
375
376#define TYPE_SCTP_SHUTDOWN_COMPLETE { \
377 /* SCTP_STATE_CLOSED */ \
378 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
379 /* SCTP_STATE_COOKIE_WAIT */ \
380 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
381 /* SCTP_STATE_COOKIE_ECHOED */ \
382 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
383 /* SCTP_STATE_ESTABLISHED */ \
384 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
385 /* SCTP_STATE_SHUTDOWN_PENDING */ \
386 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
387 /* SCTP_STATE_SHUTDOWN_SENT */ \
388 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
389 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
390 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
391 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
392 TYPE_SCTP_FUNC(sctp_sf_do_4_C), \
393} /* TYPE_SCTP_SHUTDOWN_COMPLETE */
394
395/* The primary index for this table is the chunk type.
396 * The secondary index for this table is the state.
397 *
398 * For base protocol (RFC 2960).
399 */
400static const sctp_sm_table_entry_t chunk_event_table[SCTP_NUM_BASE_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
401 TYPE_SCTP_DATA,
402 TYPE_SCTP_INIT,
403 TYPE_SCTP_INIT_ACK,
404 TYPE_SCTP_SACK,
405 TYPE_SCTP_HEARTBEAT,
406 TYPE_SCTP_HEARTBEAT_ACK,
407 TYPE_SCTP_ABORT,
408 TYPE_SCTP_SHUTDOWN,
409 TYPE_SCTP_SHUTDOWN_ACK,
410 TYPE_SCTP_ERROR,
411 TYPE_SCTP_COOKIE_ECHO,
412 TYPE_SCTP_COOKIE_ACK,
413 TYPE_SCTP_ECN_ECNE,
414 TYPE_SCTP_ECN_CWR,
415 TYPE_SCTP_SHUTDOWN_COMPLETE,
416}; /* state_fn_t chunk_event_table[][] */
417
418#define TYPE_SCTP_ASCONF { \
419 /* SCTP_STATE_CLOSED */ \
420 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
421 /* SCTP_STATE_COOKIE_WAIT */ \
422 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
423 /* SCTP_STATE_COOKIE_ECHOED */ \
424 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
425 /* SCTP_STATE_ESTABLISHED */ \
426 TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
427 /* SCTP_STATE_SHUTDOWN_PENDING */ \
428 TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
429 /* SCTP_STATE_SHUTDOWN_SENT */ \
430 TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
431 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
432 TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
433 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
434 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
435} /* TYPE_SCTP_ASCONF */
436
437#define TYPE_SCTP_ASCONF_ACK { \
438 /* SCTP_STATE_CLOSED */ \
439 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
440 /* SCTP_STATE_COOKIE_WAIT */ \
441 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
442 /* SCTP_STATE_COOKIE_ECHOED */ \
443 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
444 /* SCTP_STATE_ESTABLISHED */ \
445 TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
446 /* SCTP_STATE_SHUTDOWN_PENDING */ \
447 TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
448 /* SCTP_STATE_SHUTDOWN_SENT */ \
449 TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
450 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
451 TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
452 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
453 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
454} /* TYPE_SCTP_ASCONF_ACK */
455
456/* The primary index for this table is the chunk type.
457 * The secondary index for this table is the state.
458 */
459static const sctp_sm_table_entry_t addip_chunk_event_table[SCTP_NUM_ADDIP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
460 TYPE_SCTP_ASCONF,
461 TYPE_SCTP_ASCONF_ACK,
462}; /*state_fn_t addip_chunk_event_table[][] */
463
464#define TYPE_SCTP_FWD_TSN { \
465 /* SCTP_STATE_CLOSED */ \
466 TYPE_SCTP_FUNC(sctp_sf_ootb), \
467 /* SCTP_STATE_COOKIE_WAIT */ \
468 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
469 /* SCTP_STATE_COOKIE_ECHOED */ \
470 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
471 /* SCTP_STATE_ESTABLISHED */ \
472 TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
473 /* SCTP_STATE_SHUTDOWN_PENDING */ \
474 TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
475 /* SCTP_STATE_SHUTDOWN_SENT */ \
476 TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn_fast), \
477 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
478 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
479 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
480 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
481} /* TYPE_SCTP_FWD_TSN */
482
483/* The primary index for this table is the chunk type.
484 * The secondary index for this table is the state.
485 */
486static const sctp_sm_table_entry_t prsctp_chunk_event_table[SCTP_NUM_PRSCTP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
487 TYPE_SCTP_FWD_TSN,
488}; /*state_fn_t prsctp_chunk_event_table[][] */
489
490#define TYPE_SCTP_AUTH { \
491 /* SCTP_STATE_CLOSED */ \
492 TYPE_SCTP_FUNC(sctp_sf_ootb), \
493 /* SCTP_STATE_COOKIE_WAIT */ \
494 TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
495 /* SCTP_STATE_COOKIE_ECHOED */ \
496 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
497 /* SCTP_STATE_ESTABLISHED */ \
498 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
499 /* SCTP_STATE_SHUTDOWN_PENDING */ \
500 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
501 /* SCTP_STATE_SHUTDOWN_SENT */ \
502 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
503 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
504 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
505 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
506 TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
507} /* TYPE_SCTP_AUTH */
508
509/* The primary index for this table is the chunk type.
510 * The secondary index for this table is the state.
511 */
512static const sctp_sm_table_entry_t auth_chunk_event_table[SCTP_NUM_AUTH_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
513 TYPE_SCTP_AUTH,
514}; /*state_fn_t auth_chunk_event_table[][] */
515
516static const sctp_sm_table_entry_t
517chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
518 /* SCTP_STATE_CLOSED */
519 TYPE_SCTP_FUNC(sctp_sf_ootb),
520 /* SCTP_STATE_COOKIE_WAIT */
521 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
522 /* SCTP_STATE_COOKIE_ECHOED */
523 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
524 /* SCTP_STATE_ESTABLISHED */
525 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
526 /* SCTP_STATE_SHUTDOWN_PENDING */
527 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
528 /* SCTP_STATE_SHUTDOWN_SENT */
529 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
530 /* SCTP_STATE_SHUTDOWN_RECEIVED */
531 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
532 /* SCTP_STATE_SHUTDOWN_ACK_SENT */
533 TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
534}; /* chunk unknown */
535
536
537#define TYPE_SCTP_PRIMITIVE_ASSOCIATE { \
538 /* SCTP_STATE_CLOSED */ \
539 TYPE_SCTP_FUNC(sctp_sf_do_prm_asoc), \
540 /* SCTP_STATE_COOKIE_WAIT */ \
541 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
542 /* SCTP_STATE_COOKIE_ECHOED */ \
543 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
544 /* SCTP_STATE_ESTABLISHED */ \
545 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
546 /* SCTP_STATE_SHUTDOWN_PENDING */ \
547 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
548 /* SCTP_STATE_SHUTDOWN_SENT */ \
549 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
550 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
551 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
552 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
553 TYPE_SCTP_FUNC(sctp_sf_not_impl), \
554} /* TYPE_SCTP_PRIMITIVE_ASSOCIATE */
555
556#define TYPE_SCTP_PRIMITIVE_SHUTDOWN { \
557 /* SCTP_STATE_CLOSED */ \
558 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
559 /* SCTP_STATE_COOKIE_WAIT */ \
560 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_shutdown), \
561 /* SCTP_STATE_COOKIE_ECHOED */ \
562 TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_shutdown),\
563 /* SCTP_STATE_ESTABLISHED */ \
564 TYPE_SCTP_FUNC(sctp_sf_do_9_2_prm_shutdown), \
565 /* SCTP_STATE_SHUTDOWN_PENDING */ \
566 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
567 /* SCTP_STATE_SHUTDOWN_SENT */ \
568 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
569 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
570 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
571 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
572 TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
573} /* TYPE_SCTP_PRIMITIVE_SHUTDOWN */
574
575#define TYPE_SCTP_PRIMITIVE_ABORT { \
576 /* SCTP_STATE_CLOSED */ \
577 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
578 /* SCTP_STATE_COOKIE_WAIT */ \
579 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_abort), \
580 /* SCTP_STATE_COOKIE_ECHOED */ \
581 TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_abort), \
582 /* SCTP_STATE_ESTABLISHED */ \
583 TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
584 /* SCTP_STATE_SHUTDOWN_PENDING */ \
585 TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_prm_abort), \
586 /* SCTP_STATE_SHUTDOWN_SENT */ \
587 TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_prm_abort), \
588 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
589 TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
590 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
591 TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_prm_abort), \
592} /* TYPE_SCTP_PRIMITIVE_ABORT */
593
594#define TYPE_SCTP_PRIMITIVE_SEND { \
595 /* SCTP_STATE_CLOSED */ \
596 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
597 /* SCTP_STATE_COOKIE_WAIT */ \
598 TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
599 /* SCTP_STATE_COOKIE_ECHOED */ \
600 TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
601 /* SCTP_STATE_ESTABLISHED */ \
602 TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
603 /* SCTP_STATE_SHUTDOWN_PENDING */ \
604 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
605 /* SCTP_STATE_SHUTDOWN_SENT */ \
606 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
607 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
608 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
609 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
610 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
611} /* TYPE_SCTP_PRIMITIVE_SEND */
612
613#define TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT { \
614 /* SCTP_STATE_CLOSED */ \
615 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
616 /* SCTP_STATE_COOKIE_WAIT */ \
617 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
618 /* SCTP_STATE_COOKIE_ECHOED */ \
619 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
620 /* SCTP_STATE_ESTABLISHED */ \
621 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
622 /* SCTP_STATE_SHUTDOWN_PENDING */ \
623 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
624 /* SCTP_STATE_SHUTDOWN_SENT */ \
625 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
626 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
627 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
628 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
629 TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat), \
630} /* TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT */
631
632#define TYPE_SCTP_PRIMITIVE_ASCONF { \
633 /* SCTP_STATE_CLOSED */ \
634 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
635 /* SCTP_STATE_COOKIE_WAIT */ \
636 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
637 /* SCTP_STATE_COOKIE_ECHOED */ \
638 TYPE_SCTP_FUNC(sctp_sf_error_closed), \
639 /* SCTP_STATE_ESTABLISHED */ \
640 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
641 /* SCTP_STATE_SHUTDOWN_PENDING */ \
642 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
643 /* SCTP_STATE_SHUTDOWN_SENT */ \
644 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
645 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
646 TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
647 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
648 TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
649} /* TYPE_SCTP_PRIMITIVE_ASCONF */
650
651/* The primary index for this table is the primitive type.
652 * The secondary index for this table is the state.
653 */
654static const sctp_sm_table_entry_t primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES] = {
655 TYPE_SCTP_PRIMITIVE_ASSOCIATE,
656 TYPE_SCTP_PRIMITIVE_SHUTDOWN,
657 TYPE_SCTP_PRIMITIVE_ABORT,
658 TYPE_SCTP_PRIMITIVE_SEND,
659 TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT,
660 TYPE_SCTP_PRIMITIVE_ASCONF,
661};
662
663#define TYPE_SCTP_OTHER_NO_PENDING_TSN { \
664 /* SCTP_STATE_CLOSED */ \
665 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
666 /* SCTP_STATE_COOKIE_WAIT */ \
667 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
668 /* SCTP_STATE_COOKIE_ECHOED */ \
669 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
670 /* SCTP_STATE_ESTABLISHED */ \
671 TYPE_SCTP_FUNC(sctp_sf_do_no_pending_tsn), \
672 /* SCTP_STATE_SHUTDOWN_PENDING */ \
673 TYPE_SCTP_FUNC(sctp_sf_do_9_2_start_shutdown), \
674 /* SCTP_STATE_SHUTDOWN_SENT */ \
675 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
676 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
677 TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
678 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
679 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
680}
681
682#define TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH { \
683 /* SCTP_STATE_CLOSED */ \
684 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
685 /* SCTP_STATE_COOKIE_WAIT */ \
686 TYPE_SCTP_FUNC(sctp_sf_cookie_wait_icmp_abort), \
687 /* SCTP_STATE_COOKIE_ECHOED */ \
688 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
689 /* SCTP_STATE_ESTABLISHED */ \
690 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
691 /* SCTP_STATE_SHUTDOWN_PENDING */ \
692 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
693 /* SCTP_STATE_SHUTDOWN_SENT */ \
694 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
695 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
696 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
697 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
698 TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
699}
700
701static const sctp_sm_table_entry_t other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES] = {
702 TYPE_SCTP_OTHER_NO_PENDING_TSN,
703 TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH,
704};
705
706#define TYPE_SCTP_EVENT_TIMEOUT_NONE { \
707 /* SCTP_STATE_CLOSED */ \
708 TYPE_SCTP_FUNC(sctp_sf_bug), \
709 /* SCTP_STATE_COOKIE_WAIT */ \
710 TYPE_SCTP_FUNC(sctp_sf_bug), \
711 /* SCTP_STATE_COOKIE_ECHOED */ \
712 TYPE_SCTP_FUNC(sctp_sf_bug), \
713 /* SCTP_STATE_ESTABLISHED */ \
714 TYPE_SCTP_FUNC(sctp_sf_bug), \
715 /* SCTP_STATE_SHUTDOWN_PENDING */ \
716 TYPE_SCTP_FUNC(sctp_sf_bug), \
717 /* SCTP_STATE_SHUTDOWN_SENT */ \
718 TYPE_SCTP_FUNC(sctp_sf_bug), \
719 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
720 TYPE_SCTP_FUNC(sctp_sf_bug), \
721 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
722 TYPE_SCTP_FUNC(sctp_sf_bug), \
723}
724
725#define TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE { \
726 /* SCTP_STATE_CLOSED */ \
727 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
728 /* SCTP_STATE_COOKIE_WAIT */ \
729 TYPE_SCTP_FUNC(sctp_sf_bug), \
730 /* SCTP_STATE_COOKIE_ECHOED */ \
731 TYPE_SCTP_FUNC(sctp_sf_t1_cookie_timer_expire), \
732 /* SCTP_STATE_ESTABLISHED */ \
733 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
734 /* SCTP_STATE_SHUTDOWN_PENDING */ \
735 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
736 /* SCTP_STATE_SHUTDOWN_SENT */ \
737 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
738 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
739 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
740 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
741 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
742}
743
744#define TYPE_SCTP_EVENT_TIMEOUT_T1_INIT { \
745 /* SCTP_STATE_CLOSED */ \
746 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
747 /* SCTP_STATE_COOKIE_WAIT */ \
748 TYPE_SCTP_FUNC(sctp_sf_t1_init_timer_expire), \
749 /* SCTP_STATE_COOKIE_ECHOED */ \
750 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
751 /* SCTP_STATE_ESTABLISHED */ \
752 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
753 /* SCTP_STATE_SHUTDOWN_PENDING */ \
754 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
755 /* SCTP_STATE_SHUTDOWN_SENT */ \
756 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
757 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
758 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
759 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
760 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
761}
762
763#define TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN { \
764 /* SCTP_STATE_CLOSED */ \
765 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
766 /* SCTP_STATE_COOKIE_WAIT */ \
767 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
768 /* SCTP_STATE_COOKIE_ECHOED */ \
769 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
770 /* SCTP_STATE_ESTABLISHED */ \
771 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
772 /* SCTP_STATE_SHUTDOWN_PENDING */ \
773 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
774 /* SCTP_STATE_SHUTDOWN_SENT */ \
775 TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
776 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
777 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
778 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
779 TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
780}
781
782#define TYPE_SCTP_EVENT_TIMEOUT_T3_RTX { \
783 /* SCTP_STATE_CLOSED */ \
784 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
785 /* SCTP_STATE_COOKIE_WAIT */ \
786 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
787 /* SCTP_STATE_COOKIE_ECHOED */ \
788 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
789 /* SCTP_STATE_ESTABLISHED */ \
790 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
791 /* SCTP_STATE_SHUTDOWN_PENDING */ \
792 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
793 /* SCTP_STATE_SHUTDOWN_SENT */ \
794 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
795 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
796 TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
797 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
798 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
799}
800
801#define TYPE_SCTP_EVENT_TIMEOUT_T4_RTO { \
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_t4_timer_expire), \
810 /* SCTP_STATE_SHUTDOWN_PENDING */ \
811 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
812 /* SCTP_STATE_SHUTDOWN_SENT */ \
813 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
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
820#define TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD { \
821 /* SCTP_STATE_CLOSED */ \
822 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
823 /* SCTP_STATE_COOKIE_WAIT */ \
824 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
825 /* SCTP_STATE_COOKIE_ECHOED */ \
826 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
827 /* SCTP_STATE_ESTABLISHED */ \
828 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
829 /* SCTP_STATE_SHUTDOWN_PENDING */ \
830 TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
831 /* SCTP_STATE_SHUTDOWN_SENT */ \
832 TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
833 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
834 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
835 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
836 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
837}
838
839#define TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT { \
840 /* SCTP_STATE_CLOSED */ \
841 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
842 /* SCTP_STATE_COOKIE_WAIT */ \
843 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
844 /* SCTP_STATE_COOKIE_ECHOED */ \
845 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
846 /* SCTP_STATE_ESTABLISHED */ \
847 TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
848 /* SCTP_STATE_SHUTDOWN_PENDING */ \
849 TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
850 /* SCTP_STATE_SHUTDOWN_SENT */ \
851 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
852 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
853 TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
854 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
855 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
856}
857
858#define TYPE_SCTP_EVENT_TIMEOUT_SACK { \
859 /* SCTP_STATE_CLOSED */ \
860 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
861 /* SCTP_STATE_COOKIE_WAIT */ \
862 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
863 /* SCTP_STATE_COOKIE_ECHOED */ \
864 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
865 /* SCTP_STATE_ESTABLISHED */ \
866 TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
867 /* SCTP_STATE_SHUTDOWN_PENDING */ \
868 TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
869 /* SCTP_STATE_SHUTDOWN_SENT */ \
870 TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
871 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
872 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
873 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
874 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
875}
876
877#define TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE { \
878 /* SCTP_STATE_CLOSED */ \
879 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
880 /* SCTP_STATE_COOKIE_WAIT */ \
881 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
882 /* SCTP_STATE_COOKIE_ECHOED */ \
883 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
884 /* SCTP_STATE_ESTABLISHED */ \
885 TYPE_SCTP_FUNC(sctp_sf_autoclose_timer_expire), \
886 /* SCTP_STATE_SHUTDOWN_PENDING */ \
887 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
888 /* SCTP_STATE_SHUTDOWN_SENT */ \
889 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
890 /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
891 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
892 /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
893 TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
894}
895
896static const sctp_sm_table_entry_t timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES] = {
897 TYPE_SCTP_EVENT_TIMEOUT_NONE,
898 TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE,
899 TYPE_SCTP_EVENT_TIMEOUT_T1_INIT,
900 TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN,
901 TYPE_SCTP_EVENT_TIMEOUT_T3_RTX,
902 TYPE_SCTP_EVENT_TIMEOUT_T4_RTO,
903 TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD,
904 TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT,
905 TYPE_SCTP_EVENT_TIMEOUT_SACK,
906 TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE,
907};
908
909static const sctp_sm_table_entry_t *sctp_chunk_event_lookup(sctp_cid_t cid,
910 sctp_state_t state)
911{
912 if (state > SCTP_STATE_MAX)
913 return &bug;
914
915 if (cid <= SCTP_CID_BASE_MAX)
916 return &chunk_event_table[cid][state];
917
918 if (sctp_prsctp_enable) {
919 if (cid == SCTP_CID_FWD_TSN)
920 return &prsctp_chunk_event_table[0][state];
921 }
922
923 if (sctp_addip_enable) {
924 if (cid == SCTP_CID_ASCONF)
925 return &addip_chunk_event_table[0][state];
926
927 if (cid == SCTP_CID_ASCONF_ACK)
928 return &addip_chunk_event_table[1][state];
929 }
930
931 if (sctp_auth_enable) {
932 if (cid == SCTP_CID_AUTH)
933 return &auth_chunk_event_table[0][state];
934 }
935
936 return &chunk_event_table_unknown[state];
937}