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TOMOYO Linux Cross Reference
Linux/net/sctp/sm_statetable.c

Version: ~ [ linux-4.18 ] ~ [ linux-4.17.14 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.62 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.119 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.147 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.118 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.57 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.27.62 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~ [ linux-next-20180810 ] ~ [ linux-next-20180813 ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

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

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