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