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