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