net/sctp/sm_statetable.c

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