xref: /linux/net/sctp/sm_statetable.c (revision 762f99f4f3cb41a775b5157dd761217beba65873)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* SCTP kernel implementation
3  * (C) Copyright IBM Corp. 2001, 2004
4  * Copyright (c) 1999-2000 Cisco, Inc.
5  * Copyright (c) 1999-2001 Motorola, Inc.
6  * Copyright (c) 2001 Intel Corp.
7  * Copyright (c) 2001 Nokia, Inc.
8  *
9  * This file is part of the SCTP kernel implementation
10  *
11  * These are the state tables for the SCTP state machine.
12  *
13  * Please send any bug reports or fixes you make to the
14  * email address(es):
15  *    lksctp developers <linux-sctp@vger.kernel.org>
16  *
17  * Written or modified by:
18  *    La Monte H.P. Yarroll <piggy@acm.org>
19  *    Karl Knutson          <karl@athena.chicago.il.us>
20  *    Jon Grimm             <jgrimm@us.ibm.com>
21  *    Hui Huang		    <hui.huang@nokia.com>
22  *    Daisy Chang	    <daisyc@us.ibm.com>
23  *    Ardelle Fan	    <ardelle.fan@intel.com>
24  *    Sridhar Samudrala	    <sri@us.ibm.com>
25  */
26 
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28 
29 #include <linux/skbuff.h>
30 #include <net/sctp/sctp.h>
31 #include <net/sctp/sm.h>
32 
33 static const struct sctp_sm_table_entry
34 primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES];
35 static const struct sctp_sm_table_entry
36 other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES];
37 static const struct sctp_sm_table_entry
38 timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES];
39 
40 static const struct sctp_sm_table_entry *sctp_chunk_event_lookup(
41 						struct net *net,
42 						enum sctp_cid cid,
43 						enum sctp_state state);
44 
45 
46 static const struct sctp_sm_table_entry bug = {
47 	.fn = sctp_sf_bug,
48 	.name = "sctp_sf_bug"
49 };
50 
51 #define DO_LOOKUP(_max, _type, _table)					\
52 ({									\
53 	const struct sctp_sm_table_entry *rtn;				\
54 									\
55 	if ((event_subtype._type > (_max))) {				\
56 		pr_warn("table %p possible attack: event %d exceeds max %d\n", \
57 			_table, event_subtype._type, _max);		\
58 		rtn = &bug;						\
59 	} else								\
60 		rtn = &_table[event_subtype._type][(int)state];		\
61 									\
62 	rtn;								\
63 })
64 
sctp_sm_lookup_event(struct net * net,enum sctp_event_type event_type,enum sctp_state state,union sctp_subtype event_subtype)65 const struct sctp_sm_table_entry *sctp_sm_lookup_event(
66 					struct net *net,
67 					enum sctp_event_type event_type,
68 					enum sctp_state state,
69 					union sctp_subtype event_subtype)
70 {
71 	switch (event_type) {
72 	case SCTP_EVENT_T_CHUNK:
73 		return sctp_chunk_event_lookup(net, event_subtype.chunk, state);
74 	case SCTP_EVENT_T_TIMEOUT:
75 		return DO_LOOKUP(SCTP_EVENT_TIMEOUT_MAX, timeout,
76 				 timeout_event_table);
77 	case SCTP_EVENT_T_OTHER:
78 		return DO_LOOKUP(SCTP_EVENT_OTHER_MAX, other,
79 				 other_event_table);
80 	case SCTP_EVENT_T_PRIMITIVE:
81 		return DO_LOOKUP(SCTP_EVENT_PRIMITIVE_MAX, primitive,
82 				 primitive_event_table);
83 	default:
84 		/* Yikes!  We got an illegal event type.  */
85 		return &bug;
86 	}
87 }
88 
89 #define TYPE_SCTP_FUNC(func) {.fn = func, .name = #func}
90 
91 #define TYPE_SCTP_DATA { \
92 	/* SCTP_STATE_CLOSED */ \
93 	TYPE_SCTP_FUNC(sctp_sf_ootb), \
94 	/* SCTP_STATE_COOKIE_WAIT */ \
95 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
96 	/* SCTP_STATE_COOKIE_ECHOED */ \
97 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
98 	/* SCTP_STATE_ESTABLISHED */ \
99 	TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
100 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
101 	TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
102 	/* SCTP_STATE_SHUTDOWN_SENT */ \
103 	TYPE_SCTP_FUNC(sctp_sf_eat_data_fast_4_4), \
104 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
105 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
106 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
107 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
108 } /* TYPE_SCTP_DATA */
109 
110 #define TYPE_SCTP_INIT { \
111 	/* SCTP_STATE_CLOSED */ \
112 	TYPE_SCTP_FUNC(sctp_sf_do_5_1B_init), \
113 	/* SCTP_STATE_COOKIE_WAIT */ \
114 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
115 	/* SCTP_STATE_COOKIE_ECHOED */ \
116 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
117 	/* SCTP_STATE_ESTABLISHED */ \
118 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
119 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
120 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
121 	/* SCTP_STATE_SHUTDOWN_SENT */ \
122 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
123 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
124 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
125 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
126 	TYPE_SCTP_FUNC(sctp_sf_do_9_2_reshutack), \
127 } /* TYPE_SCTP_INIT */
128 
129 #define TYPE_SCTP_INIT_ACK { \
130 	/* SCTP_STATE_CLOSED */ \
131 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_3_initack), \
132 	/* SCTP_STATE_COOKIE_WAIT */ \
133 	TYPE_SCTP_FUNC(sctp_sf_do_5_1C_ack), \
134 	/* SCTP_STATE_COOKIE_ECHOED */ \
135 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
136 	/* SCTP_STATE_ESTABLISHED */ \
137 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
138 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
139 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
140 	/* SCTP_STATE_SHUTDOWN_SENT */ \
141 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
142 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
143 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
144 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
145 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
146 } /* TYPE_SCTP_INIT_ACK */
147 
148 #define TYPE_SCTP_SACK { \
149 	/* SCTP_STATE_CLOSED */ \
150 	TYPE_SCTP_FUNC(sctp_sf_ootb), \
151 	/* SCTP_STATE_COOKIE_WAIT */ \
152 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
153 	/* SCTP_STATE_COOKIE_ECHOED */ \
154 	TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
155 	/* SCTP_STATE_ESTABLISHED */ \
156 	TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
157 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
158 	TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
159 	/* SCTP_STATE_SHUTDOWN_SENT */ \
160 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
161 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
162 	TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
163 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
164 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
165 } /* TYPE_SCTP_SACK */
166 
167 #define TYPE_SCTP_HEARTBEAT { \
168 	/* SCTP_STATE_CLOSED */ \
169 	TYPE_SCTP_FUNC(sctp_sf_ootb), \
170 	/* SCTP_STATE_COOKIE_WAIT */ \
171 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
172 	/* SCTP_STATE_COOKIE_ECHOED */ \
173 	TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
174 	/* SCTP_STATE_ESTABLISHED */ \
175 	TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
176 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
177 	TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
178 	/* SCTP_STATE_SHUTDOWN_SENT */ \
179 	TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
180 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
181 	TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
182 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
183 	/* This should not happen, but we are nice.  */ \
184 	TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
185 } /* TYPE_SCTP_HEARTBEAT */
186 
187 #define TYPE_SCTP_HEARTBEAT_ACK { \
188 	/* SCTP_STATE_CLOSED */ \
189 	TYPE_SCTP_FUNC(sctp_sf_ootb), \
190 	/* SCTP_STATE_COOKIE_WAIT */ \
191 	TYPE_SCTP_FUNC(sctp_sf_violation), \
192 	/* SCTP_STATE_COOKIE_ECHOED */ \
193 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
194 	/* SCTP_STATE_ESTABLISHED */ \
195 	TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
196 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
197 	TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
198 	/* SCTP_STATE_SHUTDOWN_SENT */ \
199 	TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
200 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
201 	TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
202 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
203 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
204 } /* TYPE_SCTP_HEARTBEAT_ACK */
205 
206 #define TYPE_SCTP_ABORT { \
207 	/* SCTP_STATE_CLOSED */ \
208 	TYPE_SCTP_FUNC(sctp_sf_pdiscard), \
209 	/* SCTP_STATE_COOKIE_WAIT */ \
210 	TYPE_SCTP_FUNC(sctp_sf_cookie_wait_abort), \
211 	/* SCTP_STATE_COOKIE_ECHOED */ \
212 	TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_abort), \
213 	/* SCTP_STATE_ESTABLISHED */ \
214 	TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
215 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
216 	TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_abort), \
217 	/* SCTP_STATE_SHUTDOWN_SENT */ \
218 	TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_abort), \
219 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
220 	TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
221 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
222 	TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_abort), \
223 } /* TYPE_SCTP_ABORT */
224 
225 #define TYPE_SCTP_SHUTDOWN { \
226 	/* SCTP_STATE_CLOSED */ \
227 	TYPE_SCTP_FUNC(sctp_sf_ootb), \
228 	/* SCTP_STATE_COOKIE_WAIT */ \
229 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
230 	/* SCTP_STATE_COOKIE_ECHOED */ \
231 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
232 	/* SCTP_STATE_ESTABLISHED */ \
233 	TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
234 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
235 	TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
236 	/* SCTP_STATE_SHUTDOWN_SENT */ \
237 	TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
238 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
239 	TYPE_SCTP_FUNC(sctp_sf_do_9_2_shut_ctsn), \
240 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
241 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
242 } /* TYPE_SCTP_SHUTDOWN */
243 
244 #define TYPE_SCTP_SHUTDOWN_ACK { \
245 	/* SCTP_STATE_CLOSED */ \
246 	TYPE_SCTP_FUNC(sctp_sf_ootb), \
247 	/* SCTP_STATE_COOKIE_WAIT */ \
248 	TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
249 	/* SCTP_STATE_COOKIE_ECHOED */ \
250 	TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
251 	/* SCTP_STATE_ESTABLISHED */ \
252 	TYPE_SCTP_FUNC(sctp_sf_violation), \
253 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
254 	TYPE_SCTP_FUNC(sctp_sf_violation), \
255 	/* SCTP_STATE_SHUTDOWN_SENT */ \
256 	TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
257 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
258 	TYPE_SCTP_FUNC(sctp_sf_violation), \
259 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
260 	TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
261 } /* TYPE_SCTP_SHUTDOWN_ACK */
262 
263 #define TYPE_SCTP_ERROR { \
264 	/* SCTP_STATE_CLOSED */ \
265 	TYPE_SCTP_FUNC(sctp_sf_ootb), \
266 	/* SCTP_STATE_COOKIE_WAIT */ \
267 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
268 	/* SCTP_STATE_COOKIE_ECHOED */ \
269 	TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_err), \
270 	/* SCTP_STATE_ESTABLISHED */ \
271 	TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
272 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
273 	TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
274 	/* SCTP_STATE_SHUTDOWN_SENT */ \
275 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
276 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
277 	TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
278 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
279 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
280 } /* TYPE_SCTP_ERROR */
281 
282 #define TYPE_SCTP_COOKIE_ECHO { \
283 	/* SCTP_STATE_CLOSED */ \
284 	TYPE_SCTP_FUNC(sctp_sf_do_5_1D_ce), \
285 	/* SCTP_STATE_COOKIE_WAIT */ \
286 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
287 	/* SCTP_STATE_COOKIE_ECHOED */ \
288 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
289 	/* SCTP_STATE_ESTABLISHED */ \
290 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
291 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
292 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
293 	/* SCTP_STATE_SHUTDOWN_SENT */ \
294 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
295 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
296 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
297 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
298 	TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
299 } /* TYPE_SCTP_COOKIE_ECHO */
300 
301 #define TYPE_SCTP_COOKIE_ACK { \
302 	/* SCTP_STATE_CLOSED */ \
303 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
304 	/* SCTP_STATE_COOKIE_WAIT */ \
305 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
306 	/* SCTP_STATE_COOKIE_ECHOED */ \
307 	TYPE_SCTP_FUNC(sctp_sf_do_5_1E_ca), \
308 	/* SCTP_STATE_ESTABLISHED */ \
309 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
310 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
311 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
312 	/* SCTP_STATE_SHUTDOWN_SENT */ \
313 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
314 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
315 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
316 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
317 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
318 } /* TYPE_SCTP_COOKIE_ACK */
319 
320 #define TYPE_SCTP_ECN_ECNE { \
321 	/* SCTP_STATE_CLOSED */ \
322 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
323 	/* SCTP_STATE_COOKIE_WAIT */ \
324 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
325 	/* SCTP_STATE_COOKIE_ECHOED */ \
326 	TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
327 	/* SCTP_STATE_ESTABLISHED */ \
328 	TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
329 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
330 	TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
331 	/* SCTP_STATE_SHUTDOWN_SENT */ \
332 	TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
333 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
334 	TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
335 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
336 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
337 } /* TYPE_SCTP_ECN_ECNE */
338 
339 #define TYPE_SCTP_ECN_CWR { \
340 	/* SCTP_STATE_CLOSED */ \
341 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
342 	/* SCTP_STATE_COOKIE_WAIT */ \
343 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
344 	/* SCTP_STATE_COOKIE_ECHOED */ \
345 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
346 	/* SCTP_STATE_ESTABLISHED */ \
347 	TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
348 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
349 	TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
350 	/* SCTP_STATE_SHUTDOWN_SENT */ \
351 	TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
352 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
353 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
354 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
355 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
356 } /* TYPE_SCTP_ECN_CWR */
357 
358 #define TYPE_SCTP_SHUTDOWN_COMPLETE { \
359 	/* SCTP_STATE_CLOSED */ \
360 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
361 	/* SCTP_STATE_COOKIE_WAIT */ \
362 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
363 	/* SCTP_STATE_COOKIE_ECHOED */ \
364 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
365 	/* SCTP_STATE_ESTABLISHED */ \
366 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
367 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
368 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
369 	/* SCTP_STATE_SHUTDOWN_SENT */ \
370 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
371 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
372 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
373 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
374 	TYPE_SCTP_FUNC(sctp_sf_do_4_C), \
375 } /* TYPE_SCTP_SHUTDOWN_COMPLETE */
376 
377 /* The primary index for this table is the chunk type.
378  * The secondary index for this table is the state.
379  *
380  * For base protocol (RFC 2960).
381  */
382 static const struct sctp_sm_table_entry
383 chunk_event_table[SCTP_NUM_BASE_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
384 	TYPE_SCTP_DATA,
385 	TYPE_SCTP_INIT,
386 	TYPE_SCTP_INIT_ACK,
387 	TYPE_SCTP_SACK,
388 	TYPE_SCTP_HEARTBEAT,
389 	TYPE_SCTP_HEARTBEAT_ACK,
390 	TYPE_SCTP_ABORT,
391 	TYPE_SCTP_SHUTDOWN,
392 	TYPE_SCTP_SHUTDOWN_ACK,
393 	TYPE_SCTP_ERROR,
394 	TYPE_SCTP_COOKIE_ECHO,
395 	TYPE_SCTP_COOKIE_ACK,
396 	TYPE_SCTP_ECN_ECNE,
397 	TYPE_SCTP_ECN_CWR,
398 	TYPE_SCTP_SHUTDOWN_COMPLETE,
399 }; /* state_fn_t chunk_event_table[][] */
400 
401 #define TYPE_SCTP_ASCONF { \
402 	/* SCTP_STATE_CLOSED */ \
403 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
404 	/* SCTP_STATE_COOKIE_WAIT */ \
405 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
406 	/* SCTP_STATE_COOKIE_ECHOED */ \
407 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
408 	/* SCTP_STATE_ESTABLISHED */ \
409 	TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
410 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
411 	TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
412 	/* SCTP_STATE_SHUTDOWN_SENT */ \
413 	TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
414 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
415 	TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
416 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
417 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
418 } /* TYPE_SCTP_ASCONF */
419 
420 #define TYPE_SCTP_ASCONF_ACK { \
421 	/* SCTP_STATE_CLOSED */ \
422 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
423 	/* SCTP_STATE_COOKIE_WAIT */ \
424 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
425 	/* SCTP_STATE_COOKIE_ECHOED */ \
426 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
427 	/* SCTP_STATE_ESTABLISHED */ \
428 	TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
429 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
430 	TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
431 	/* SCTP_STATE_SHUTDOWN_SENT */ \
432 	TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
433 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
434 	TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
435 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
436 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
437 } /* TYPE_SCTP_ASCONF_ACK */
438 
439 /* The primary index for this table is the chunk type.
440  * The secondary index for this table is the state.
441  */
442 static const struct sctp_sm_table_entry
443 addip_chunk_event_table[SCTP_NUM_ADDIP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
444 	TYPE_SCTP_ASCONF,
445 	TYPE_SCTP_ASCONF_ACK,
446 }; /*state_fn_t addip_chunk_event_table[][] */
447 
448 #define TYPE_SCTP_FWD_TSN { \
449 	/* SCTP_STATE_CLOSED */ \
450 	TYPE_SCTP_FUNC(sctp_sf_ootb), \
451 	/* SCTP_STATE_COOKIE_WAIT */ \
452 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
453 	/* SCTP_STATE_COOKIE_ECHOED */ \
454 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
455 	/* SCTP_STATE_ESTABLISHED */ \
456 	TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
457 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
458 	TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
459 	/* SCTP_STATE_SHUTDOWN_SENT */ \
460 	TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn_fast), \
461 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
462 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
463 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
464 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
465 } /* TYPE_SCTP_FWD_TSN */
466 
467 /* The primary index for this table is the chunk type.
468  * The secondary index for this table is the state.
469  */
470 static const struct sctp_sm_table_entry
471 prsctp_chunk_event_table[SCTP_NUM_PRSCTP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
472 	TYPE_SCTP_FWD_TSN,
473 }; /*state_fn_t prsctp_chunk_event_table[][] */
474 
475 #define TYPE_SCTP_RECONF { \
476 	/* SCTP_STATE_CLOSED */ \
477 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
478 	/* SCTP_STATE_COOKIE_WAIT */ \
479 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
480 	/* SCTP_STATE_COOKIE_ECHOED */ \
481 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
482 	/* SCTP_STATE_ESTABLISHED */ \
483 	TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
484 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
485 	TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
486 	/* SCTP_STATE_SHUTDOWN_SENT */ \
487 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
488 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
489 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
490 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
491 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
492 } /* TYPE_SCTP_RECONF */
493 
494 /* The primary index for this table is the chunk type.
495  * The secondary index for this table is the state.
496  */
497 static const struct sctp_sm_table_entry
498 reconf_chunk_event_table[SCTP_NUM_RECONF_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
499 	TYPE_SCTP_RECONF,
500 }; /*state_fn_t reconf_chunk_event_table[][] */
501 
502 #define TYPE_SCTP_AUTH { \
503 	/* SCTP_STATE_CLOSED */ \
504 	TYPE_SCTP_FUNC(sctp_sf_ootb), \
505 	/* SCTP_STATE_COOKIE_WAIT */ \
506 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
507 	/* SCTP_STATE_COOKIE_ECHOED */ \
508 	TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
509 	/* SCTP_STATE_ESTABLISHED */ \
510 	TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
511 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
512 	TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
513 	/* SCTP_STATE_SHUTDOWN_SENT */ \
514 	TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
515 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
516 	TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
517 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
518 	TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
519 } /* TYPE_SCTP_AUTH */
520 
521 /* The primary index for this table is the chunk type.
522  * The secondary index for this table is the state.
523  */
524 static const struct sctp_sm_table_entry
525 auth_chunk_event_table[SCTP_NUM_AUTH_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
526 	TYPE_SCTP_AUTH,
527 }; /*state_fn_t auth_chunk_event_table[][] */
528 
529 static const struct sctp_sm_table_entry
530 pad_chunk_event_table[SCTP_STATE_NUM_STATES] = {
531 	/* SCTP_STATE_CLOSED */
532 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
533 	/* SCTP_STATE_COOKIE_WAIT */
534 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
535 	/* SCTP_STATE_COOKIE_ECHOED */
536 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
537 	/* SCTP_STATE_ESTABLISHED */
538 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
539 	/* SCTP_STATE_SHUTDOWN_PENDING */
540 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
541 	/* SCTP_STATE_SHUTDOWN_SENT */
542 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
543 	/* SCTP_STATE_SHUTDOWN_RECEIVED */
544 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
545 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */
546 	TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
547 };	/* chunk pad */
548 
549 static const struct sctp_sm_table_entry
550 chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
551 	/* SCTP_STATE_CLOSED */
552 	TYPE_SCTP_FUNC(sctp_sf_ootb),
553 	/* SCTP_STATE_COOKIE_WAIT */
554 	TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
555 	/* SCTP_STATE_COOKIE_ECHOED */
556 	TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
557 	/* SCTP_STATE_ESTABLISHED */
558 	TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
559 	/* SCTP_STATE_SHUTDOWN_PENDING */
560 	TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
561 	/* SCTP_STATE_SHUTDOWN_SENT */
562 	TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
563 	/* SCTP_STATE_SHUTDOWN_RECEIVED */
564 	TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
565 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */
566 	TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
567 };	/* chunk unknown */
568 
569 
570 #define TYPE_SCTP_PRIMITIVE_ASSOCIATE  { \
571 	/* SCTP_STATE_CLOSED */ \
572 	TYPE_SCTP_FUNC(sctp_sf_do_prm_asoc), \
573 	/* SCTP_STATE_COOKIE_WAIT */ \
574 	TYPE_SCTP_FUNC(sctp_sf_not_impl), \
575 	/* SCTP_STATE_COOKIE_ECHOED */ \
576 	TYPE_SCTP_FUNC(sctp_sf_not_impl), \
577 	/* SCTP_STATE_ESTABLISHED */ \
578 	TYPE_SCTP_FUNC(sctp_sf_not_impl), \
579 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
580 	TYPE_SCTP_FUNC(sctp_sf_not_impl), \
581 	/* SCTP_STATE_SHUTDOWN_SENT */ \
582 	TYPE_SCTP_FUNC(sctp_sf_not_impl), \
583 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
584 	TYPE_SCTP_FUNC(sctp_sf_not_impl), \
585 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
586 	TYPE_SCTP_FUNC(sctp_sf_not_impl), \
587 } /* TYPE_SCTP_PRIMITIVE_ASSOCIATE */
588 
589 #define TYPE_SCTP_PRIMITIVE_SHUTDOWN  { \
590 	/* SCTP_STATE_CLOSED */ \
591 	TYPE_SCTP_FUNC(sctp_sf_error_closed), \
592 	/* SCTP_STATE_COOKIE_WAIT */ \
593 	TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_shutdown), \
594 	/* SCTP_STATE_COOKIE_ECHOED */ \
595 	TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_shutdown),\
596 	/* SCTP_STATE_ESTABLISHED */ \
597 	TYPE_SCTP_FUNC(sctp_sf_do_9_2_prm_shutdown), \
598 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
599 	TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
600 	/* SCTP_STATE_SHUTDOWN_SENT */ \
601 	TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
602 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
603 	TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
604 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
605 	TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
606 } /* TYPE_SCTP_PRIMITIVE_SHUTDOWN */
607 
608 #define TYPE_SCTP_PRIMITIVE_ABORT  { \
609 	/* SCTP_STATE_CLOSED */ \
610 	TYPE_SCTP_FUNC(sctp_sf_error_closed), \
611 	/* SCTP_STATE_COOKIE_WAIT */ \
612 	TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_abort), \
613 	/* SCTP_STATE_COOKIE_ECHOED */ \
614 	TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_abort), \
615 	/* SCTP_STATE_ESTABLISHED */ \
616 	TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
617 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
618 	TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_prm_abort), \
619 	/* SCTP_STATE_SHUTDOWN_SENT */ \
620 	TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_prm_abort), \
621 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
622 	TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
623 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
624 	TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_prm_abort), \
625 } /* TYPE_SCTP_PRIMITIVE_ABORT */
626 
627 #define TYPE_SCTP_PRIMITIVE_SEND  { \
628 	/* SCTP_STATE_CLOSED */ \
629 	TYPE_SCTP_FUNC(sctp_sf_error_closed), \
630 	/* SCTP_STATE_COOKIE_WAIT */ \
631 	TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
632 	/* SCTP_STATE_COOKIE_ECHOED */ \
633 	TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
634 	/* SCTP_STATE_ESTABLISHED */ \
635 	TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
636 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
637 	TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
638 	/* SCTP_STATE_SHUTDOWN_SENT */ \
639 	TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
640 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
641 	TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
642 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
643 	TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
644 } /* TYPE_SCTP_PRIMITIVE_SEND */
645 
646 #define TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT  { \
647 	/* SCTP_STATE_CLOSED */ \
648 	TYPE_SCTP_FUNC(sctp_sf_error_closed), \
649 	/* SCTP_STATE_COOKIE_WAIT */ \
650 	TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
651 	/* SCTP_STATE_COOKIE_ECHOED */ \
652 	TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
653 	/* SCTP_STATE_ESTABLISHED */ \
654 	TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
655 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
656 	TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
657 	/* SCTP_STATE_SHUTDOWN_SENT */ \
658 	TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
659 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
660 	TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
661 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
662 	TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
663 } /* TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT */
664 
665 #define TYPE_SCTP_PRIMITIVE_ASCONF { \
666 	/* SCTP_STATE_CLOSED */ \
667 	TYPE_SCTP_FUNC(sctp_sf_error_closed), \
668 	/* SCTP_STATE_COOKIE_WAIT */ \
669 	TYPE_SCTP_FUNC(sctp_sf_error_closed), \
670 	/* SCTP_STATE_COOKIE_ECHOED */ \
671 	TYPE_SCTP_FUNC(sctp_sf_error_closed), \
672 	/* SCTP_STATE_ESTABLISHED */ \
673 	TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
674 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
675 	TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
676 	/* SCTP_STATE_SHUTDOWN_SENT */ \
677 	TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
678 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
679 	TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
680 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
681 	TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
682 } /* TYPE_SCTP_PRIMITIVE_ASCONF */
683 
684 #define TYPE_SCTP_PRIMITIVE_RECONF { \
685 	/* SCTP_STATE_CLOSED */ \
686 	TYPE_SCTP_FUNC(sctp_sf_error_closed), \
687 	/* SCTP_STATE_COOKIE_WAIT */ \
688 	TYPE_SCTP_FUNC(sctp_sf_error_closed), \
689 	/* SCTP_STATE_COOKIE_ECHOED */ \
690 	TYPE_SCTP_FUNC(sctp_sf_error_closed), \
691 	/* SCTP_STATE_ESTABLISHED */ \
692 	TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
693 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
694 	TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
695 	/* SCTP_STATE_SHUTDOWN_SENT */ \
696 	TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
697 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
698 	TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
699 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
700 	TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
701 } /* TYPE_SCTP_PRIMITIVE_RECONF */
702 
703 /* The primary index for this table is the primitive type.
704  * The secondary index for this table is the state.
705  */
706 static const struct sctp_sm_table_entry
707 primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES] = {
708 	TYPE_SCTP_PRIMITIVE_ASSOCIATE,
709 	TYPE_SCTP_PRIMITIVE_SHUTDOWN,
710 	TYPE_SCTP_PRIMITIVE_ABORT,
711 	TYPE_SCTP_PRIMITIVE_SEND,
712 	TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT,
713 	TYPE_SCTP_PRIMITIVE_ASCONF,
714 	TYPE_SCTP_PRIMITIVE_RECONF,
715 };
716 
717 #define TYPE_SCTP_OTHER_NO_PENDING_TSN  { \
718 	/* SCTP_STATE_CLOSED */ \
719 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
720 	/* SCTP_STATE_COOKIE_WAIT */ \
721 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
722 	/* SCTP_STATE_COOKIE_ECHOED */ \
723 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
724 	/* SCTP_STATE_ESTABLISHED */ \
725 	TYPE_SCTP_FUNC(sctp_sf_do_no_pending_tsn), \
726 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
727 	TYPE_SCTP_FUNC(sctp_sf_do_9_2_start_shutdown), \
728 	/* SCTP_STATE_SHUTDOWN_SENT */ \
729 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
730 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
731 	TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
732 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
733 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
734 }
735 
736 #define TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH  { \
737 	/* SCTP_STATE_CLOSED */ \
738 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
739 	/* SCTP_STATE_COOKIE_WAIT */ \
740 	TYPE_SCTP_FUNC(sctp_sf_cookie_wait_icmp_abort), \
741 	/* SCTP_STATE_COOKIE_ECHOED */ \
742 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
743 	/* SCTP_STATE_ESTABLISHED */ \
744 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
745 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
746 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
747 	/* SCTP_STATE_SHUTDOWN_SENT */ \
748 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
749 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
750 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
751 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
752 	TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
753 }
754 
755 static const struct sctp_sm_table_entry
756 other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES] = {
757 	TYPE_SCTP_OTHER_NO_PENDING_TSN,
758 	TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH,
759 };
760 
761 #define TYPE_SCTP_EVENT_TIMEOUT_NONE { \
762 	/* SCTP_STATE_CLOSED */ \
763 	TYPE_SCTP_FUNC(sctp_sf_bug), \
764 	/* SCTP_STATE_COOKIE_WAIT */ \
765 	TYPE_SCTP_FUNC(sctp_sf_bug), \
766 	/* SCTP_STATE_COOKIE_ECHOED */ \
767 	TYPE_SCTP_FUNC(sctp_sf_bug), \
768 	/* SCTP_STATE_ESTABLISHED */ \
769 	TYPE_SCTP_FUNC(sctp_sf_bug), \
770 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
771 	TYPE_SCTP_FUNC(sctp_sf_bug), \
772 	/* SCTP_STATE_SHUTDOWN_SENT */ \
773 	TYPE_SCTP_FUNC(sctp_sf_bug), \
774 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
775 	TYPE_SCTP_FUNC(sctp_sf_bug), \
776 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
777 	TYPE_SCTP_FUNC(sctp_sf_bug), \
778 }
779 
780 #define TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE { \
781 	/* SCTP_STATE_CLOSED */ \
782 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
783 	/* SCTP_STATE_COOKIE_WAIT */ \
784 	TYPE_SCTP_FUNC(sctp_sf_bug), \
785 	/* SCTP_STATE_COOKIE_ECHOED */ \
786 	TYPE_SCTP_FUNC(sctp_sf_t1_cookie_timer_expire), \
787 	/* SCTP_STATE_ESTABLISHED */ \
788 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
789 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
790 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
791 	/* SCTP_STATE_SHUTDOWN_SENT */ \
792 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
793 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
794 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
795 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
796 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
797 }
798 
799 #define TYPE_SCTP_EVENT_TIMEOUT_T1_INIT { \
800 	/* SCTP_STATE_CLOSED */ \
801 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
802 	/* SCTP_STATE_COOKIE_WAIT */ \
803 	TYPE_SCTP_FUNC(sctp_sf_t1_init_timer_expire), \
804 	/* SCTP_STATE_COOKIE_ECHOED */ \
805 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
806 	/* SCTP_STATE_ESTABLISHED */ \
807 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
808 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
809 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
810 	/* SCTP_STATE_SHUTDOWN_SENT */ \
811 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
812 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
813 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
814 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
815 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
816 }
817 
818 #define TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN { \
819 	/* SCTP_STATE_CLOSED */ \
820 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
821 	/* SCTP_STATE_COOKIE_WAIT */ \
822 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
823 	/* SCTP_STATE_COOKIE_ECHOED */ \
824 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
825 	/* SCTP_STATE_ESTABLISHED */ \
826 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
827 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
828 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
829 	/* SCTP_STATE_SHUTDOWN_SENT */ \
830 	TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
831 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
832 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
833 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
834 	TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
835 }
836 
837 #define TYPE_SCTP_EVENT_TIMEOUT_T3_RTX { \
838 	/* SCTP_STATE_CLOSED */ \
839 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
840 	/* SCTP_STATE_COOKIE_WAIT */ \
841 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
842 	/* SCTP_STATE_COOKIE_ECHOED */ \
843 	TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
844 	/* SCTP_STATE_ESTABLISHED */ \
845 	TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
846 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
847 	TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
848 	/* SCTP_STATE_SHUTDOWN_SENT */ \
849 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
850 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
851 	TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
852 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
853 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
854 }
855 
856 #define TYPE_SCTP_EVENT_TIMEOUT_T4_RTO { \
857 	/* SCTP_STATE_CLOSED */ \
858 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
859 	/* SCTP_STATE_COOKIE_WAIT */ \
860 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
861 	/* SCTP_STATE_COOKIE_ECHOED */ \
862 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
863 	/* SCTP_STATE_ESTABLISHED */ \
864 	TYPE_SCTP_FUNC(sctp_sf_t4_timer_expire), \
865 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
866 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
867 	/* SCTP_STATE_SHUTDOWN_SENT */ \
868 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
869 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
870 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
871 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
872 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
873 }
874 
875 #define TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD { \
876 	/* SCTP_STATE_CLOSED */ \
877 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
878 	/* SCTP_STATE_COOKIE_WAIT */ \
879 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
880 	/* SCTP_STATE_COOKIE_ECHOED */ \
881 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
882 	/* SCTP_STATE_ESTABLISHED */ \
883 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
884 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
885 	TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
886 	/* SCTP_STATE_SHUTDOWN_SENT */ \
887 	TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
888 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
889 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
890 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
891 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
892 }
893 
894 #define TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT { \
895 	/* SCTP_STATE_CLOSED */ \
896 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
897 	/* SCTP_STATE_COOKIE_WAIT */ \
898 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
899 	/* SCTP_STATE_COOKIE_ECHOED */ \
900 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
901 	/* SCTP_STATE_ESTABLISHED */ \
902 	TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
903 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
904 	TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
905 	/* SCTP_STATE_SHUTDOWN_SENT */ \
906 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
907 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
908 	TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
909 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
910 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
911 }
912 
913 #define TYPE_SCTP_EVENT_TIMEOUT_SACK { \
914 	/* SCTP_STATE_CLOSED */ \
915 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
916 	/* SCTP_STATE_COOKIE_WAIT */ \
917 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
918 	/* SCTP_STATE_COOKIE_ECHOED */ \
919 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
920 	/* SCTP_STATE_ESTABLISHED */ \
921 	TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
922 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
923 	TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
924 	/* SCTP_STATE_SHUTDOWN_SENT */ \
925 	TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
926 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
927 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
928 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
929 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
930 }
931 
932 #define TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE { \
933 	/* SCTP_STATE_CLOSED */ \
934 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
935 	/* SCTP_STATE_COOKIE_WAIT */ \
936 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
937 	/* SCTP_STATE_COOKIE_ECHOED */ \
938 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
939 	/* SCTP_STATE_ESTABLISHED */ \
940 	TYPE_SCTP_FUNC(sctp_sf_autoclose_timer_expire), \
941 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
942 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
943 	/* SCTP_STATE_SHUTDOWN_SENT */ \
944 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
945 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
946 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
947 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
948 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
949 }
950 
951 #define TYPE_SCTP_EVENT_TIMEOUT_RECONF { \
952 	/* SCTP_STATE_CLOSED */ \
953 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
954 	/* SCTP_STATE_COOKIE_WAIT */ \
955 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
956 	/* SCTP_STATE_COOKIE_ECHOED */ \
957 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
958 	/* SCTP_STATE_ESTABLISHED */ \
959 	TYPE_SCTP_FUNC(sctp_sf_send_reconf), \
960 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
961 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
962 	/* SCTP_STATE_SHUTDOWN_SENT */ \
963 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
964 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
965 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
966 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
967 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
968 }
969 
970 #define TYPE_SCTP_EVENT_TIMEOUT_PROBE { \
971 	/* SCTP_STATE_CLOSED */ \
972 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
973 	/* SCTP_STATE_COOKIE_WAIT */ \
974 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
975 	/* SCTP_STATE_COOKIE_ECHOED */ \
976 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
977 	/* SCTP_STATE_ESTABLISHED */ \
978 	TYPE_SCTP_FUNC(sctp_sf_send_probe), \
979 	/* SCTP_STATE_SHUTDOWN_PENDING */ \
980 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
981 	/* SCTP_STATE_SHUTDOWN_SENT */ \
982 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
983 	/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
984 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
985 	/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
986 	TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
987 }
988 
989 static const struct sctp_sm_table_entry
990 timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES] = {
991 	TYPE_SCTP_EVENT_TIMEOUT_NONE,
992 	TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE,
993 	TYPE_SCTP_EVENT_TIMEOUT_T1_INIT,
994 	TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN,
995 	TYPE_SCTP_EVENT_TIMEOUT_T3_RTX,
996 	TYPE_SCTP_EVENT_TIMEOUT_T4_RTO,
997 	TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD,
998 	TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT,
999 	TYPE_SCTP_EVENT_TIMEOUT_RECONF,
1000 	TYPE_SCTP_EVENT_TIMEOUT_PROBE,
1001 	TYPE_SCTP_EVENT_TIMEOUT_SACK,
1002 	TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE,
1003 };
1004 
sctp_chunk_event_lookup(struct net * net,enum sctp_cid cid,enum sctp_state state)1005 static const struct sctp_sm_table_entry *sctp_chunk_event_lookup(
1006 						struct net *net,
1007 						enum sctp_cid cid,
1008 						enum sctp_state state)
1009 {
1010 	if (state > SCTP_STATE_MAX)
1011 		return &bug;
1012 
1013 	if (cid == SCTP_CID_I_DATA)
1014 		cid = SCTP_CID_DATA;
1015 
1016 	if (cid <= SCTP_CID_BASE_MAX)
1017 		return &chunk_event_table[cid][state];
1018 
1019 	switch ((u16)cid) {
1020 	case SCTP_CID_FWD_TSN:
1021 	case SCTP_CID_I_FWD_TSN:
1022 		return &prsctp_chunk_event_table[0][state];
1023 
1024 	case SCTP_CID_ASCONF:
1025 		return &addip_chunk_event_table[0][state];
1026 
1027 	case SCTP_CID_ASCONF_ACK:
1028 		return &addip_chunk_event_table[1][state];
1029 
1030 	case SCTP_CID_RECONF:
1031 		return &reconf_chunk_event_table[0][state];
1032 
1033 	case SCTP_CID_AUTH:
1034 		return &auth_chunk_event_table[0][state];
1035 
1036 	case SCTP_CID_PAD:
1037 		return &pad_chunk_event_table[state];
1038 	}
1039 
1040 	return &chunk_event_table_unknown[state];
1041 }
1042