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/net/sctp/sm_statetable.c

http://github.com/mirrors/linux
C | 998 lines | 876 code | 68 blank | 54 comment | 7 complexity | 77a0875313c3e4bf4c838bd9abbd58fd MD5 | raw file
  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}