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