net/sctp/sm_statetable.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* SCTP kernel implementation
   3  * (C) Copyright IBM Corp. 2001, 2004
   4  * Copyright (c) 1999-2000 Cisco, Inc.
   5  * Copyright (c) 1999-2001 Motorola, Inc.
   6  * Copyright (c) 2001 Intel Corp.
   7  * Copyright (c) 2001 Nokia, Inc.
   8  *
   9  * This file is part of the SCTP kernel implementation
  10  *
  11  * These are the state tables for the SCTP state machine.
  12  *
  13  * Please send any bug reports or fixes you make to the
  14  * email address(es):
  15  *    lksctp developers <linux-sctp@vger.kernel.org>
  16  *
  17  * Written or modified by:
  18  *    La Monte H.P. Yarroll <piggy@acm.org>
  19  *    Karl Knutson          <karl@athena.chicago.il.us>
  20  *    Jon Grimm             <jgrimm@us.ibm.com>
  21  *    Hui Huang             <hui.huang@nokia.com>
  22  *    Daisy Chang           <daisyc@us.ibm.com>
  23  *    Ardelle Fan           <ardelle.fan@intel.com>
  24  *    Sridhar Samudrala     <sri@us.ibm.com>
  25  */
  26
  27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  28
  29 #include <linux/skbuff.h>
  30 #include <net/sctp/sctp.h>
  31 #include <net/sctp/sm.h>
  32
  33 static const struct sctp_sm_table_entry
  34 primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES];
  35 static const struct sctp_sm_table_entry
  36 other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES];
  37 static const struct sctp_sm_table_entry
  38 timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES];
  39
  40 static const struct sctp_sm_table_entry *sctp_chunk_event_lookup(
  41                                                 struct net *net,
  42                                                 enum sctp_cid cid,
  43                                                 enum sctp_state state);
  44
  45
  46 static const struct sctp_sm_table_entry bug = {
  47         .fn = sctp_sf_bug,
  48         .name = "sctp_sf_bug"
  49 };
  50
  51 #define DO_LOOKUP(_max, _type, _table)                                  \
  52 ({                                                                      \
  53         const struct sctp_sm_table_entry *rtn;                          \
  54                                                                         \
  55         if ((event_subtype._type > (_max))) {                           \
  56                 pr_warn("table %p possible attack: event %d exceeds max %d\n", \
  57                         _table, event_subtype._type, _max);             \
  58                 rtn = &bug;                                             \
  59         } else                                                          \
  60                 rtn = &_table[event_subtype._type][(int)state];         \
  61                                                                         \
  62         rtn;                                                            \
  63 })
  64
  65 const struct sctp_sm_table_entry *sctp_sm_lookup_event(
  66                                         struct net *net,
  67                                         enum sctp_event_type event_type,
  68                                         enum sctp_state state,
  69                                         union sctp_subtype event_subtype)
  70 {
  71         switch (event_type) {
  72         case SCTP_EVENT_T_CHUNK:
  73                 return sctp_chunk_event_lookup(net, event_subtype.chunk, state);
  74         case SCTP_EVENT_T_TIMEOUT:
  75                 return DO_LOOKUP(SCTP_EVENT_TIMEOUT_MAX, timeout,
  76                                  timeout_event_table);
  77         case SCTP_EVENT_T_OTHER:
  78                 return DO_LOOKUP(SCTP_EVENT_OTHER_MAX, other,
  79                                  other_event_table);
  80         case SCTP_EVENT_T_PRIMITIVE:
  81                 return DO_LOOKUP(SCTP_EVENT_PRIMITIVE_MAX, primitive,
  82                                  primitive_event_table);
  83         default:
  84                 /* Yikes!  We got an illegal event type.  */
  85                 return &bug;
  86         }
  87 }
  88
  89 #define TYPE_SCTP_FUNC(func) {.fn = func, .name = #func}
  90
  91 #define TYPE_SCTP_DATA { \
  92         /* SCTP_STATE_CLOSED */ \
  93         TYPE_SCTP_FUNC(sctp_sf_ootb), \
  94         /* SCTP_STATE_COOKIE_WAIT */ \
  95         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  96         /* SCTP_STATE_COOKIE_ECHOED */ \
  97         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
  98         /* SCTP_STATE_ESTABLISHED */ \
  99         TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
 100         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 101         TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
 102         /* SCTP_STATE_SHUTDOWN_SENT */ \
 103         TYPE_SCTP_FUNC(sctp_sf_eat_data_fast_4_4), \
 104         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 105         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 106         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 107         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 108 } /* TYPE_SCTP_DATA */
 109
 110 #define TYPE_SCTP_INIT { \
 111         /* SCTP_STATE_CLOSED */ \
 112         TYPE_SCTP_FUNC(sctp_sf_do_5_1B_init), \
 113         /* SCTP_STATE_COOKIE_WAIT */ \
 114         TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
 115         /* SCTP_STATE_COOKIE_ECHOED */ \
 116         TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
 117         /* SCTP_STATE_ESTABLISHED */ \
 118         TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
 119         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 120         TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
 121         /* SCTP_STATE_SHUTDOWN_SENT */ \
 122         TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
 123         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 124         TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
 125         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 126         TYPE_SCTP_FUNC(sctp_sf_do_9_2_reshutack), \
 127 } /* TYPE_SCTP_INIT */
 128
 129 #define TYPE_SCTP_INIT_ACK { \
 130         /* SCTP_STATE_CLOSED */ \
 131         TYPE_SCTP_FUNC(sctp_sf_do_5_2_3_initack), \
 132         /* SCTP_STATE_COOKIE_WAIT */ \
 133         TYPE_SCTP_FUNC(sctp_sf_do_5_1C_ack), \
 134         /* SCTP_STATE_COOKIE_ECHOED */ \
 135         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 136         /* SCTP_STATE_ESTABLISHED */ \
 137         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 138         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 139         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 140         /* SCTP_STATE_SHUTDOWN_SENT */ \
 141         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 142         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 143         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 144         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 145         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 146 } /* TYPE_SCTP_INIT_ACK */
 147
 148 #define TYPE_SCTP_SACK { \
 149         /* SCTP_STATE_CLOSED */ \
 150         TYPE_SCTP_FUNC(sctp_sf_ootb), \
 151         /* SCTP_STATE_COOKIE_WAIT */ \
 152         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 153         /* SCTP_STATE_COOKIE_ECHOED */ \
 154         TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
 155         /* SCTP_STATE_ESTABLISHED */ \
 156         TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
 157         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 158         TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
 159         /* SCTP_STATE_SHUTDOWN_SENT */ \
 160         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 161         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 162         TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
 163         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 164         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 165 } /* TYPE_SCTP_SACK */
 166
 167 #define TYPE_SCTP_HEARTBEAT { \
 168         /* SCTP_STATE_CLOSED */ \
 169         TYPE_SCTP_FUNC(sctp_sf_ootb), \
 170         /* SCTP_STATE_COOKIE_WAIT */ \
 171         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 172         /* SCTP_STATE_COOKIE_ECHOED */ \
 173         TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
 174         /* SCTP_STATE_ESTABLISHED */ \
 175         TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
 176         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 177         TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
 178         /* SCTP_STATE_SHUTDOWN_SENT */ \
 179         TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
 180         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 181         TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
 182         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 183         /* This should not happen, but we are nice.  */ \
 184         TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
 185 } /* TYPE_SCTP_HEARTBEAT */
 186
 187 #define TYPE_SCTP_HEARTBEAT_ACK { \
 188         /* SCTP_STATE_CLOSED */ \
 189         TYPE_SCTP_FUNC(sctp_sf_ootb), \
 190         /* SCTP_STATE_COOKIE_WAIT */ \
 191         TYPE_SCTP_FUNC(sctp_sf_violation), \
 192         /* SCTP_STATE_COOKIE_ECHOED */ \
 193         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 194         /* SCTP_STATE_ESTABLISHED */ \
 195         TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
 196         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 197         TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
 198         /* SCTP_STATE_SHUTDOWN_SENT */ \
 199         TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
 200         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 201         TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
 202         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 203         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 204 } /* TYPE_SCTP_HEARTBEAT_ACK */
 205
 206 #define TYPE_SCTP_ABORT { \
 207         /* SCTP_STATE_CLOSED */ \
 208         TYPE_SCTP_FUNC(sctp_sf_pdiscard), \
 209         /* SCTP_STATE_COOKIE_WAIT */ \
 210         TYPE_SCTP_FUNC(sctp_sf_cookie_wait_abort), \
 211         /* SCTP_STATE_COOKIE_ECHOED */ \
 212         TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_abort), \
 213         /* SCTP_STATE_ESTABLISHED */ \
 214         TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
 215         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 216         TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_abort), \
 217         /* SCTP_STATE_SHUTDOWN_SENT */ \
 218         TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_abort), \
 219         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 220         TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
 221         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 222         TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_abort), \
 223 } /* TYPE_SCTP_ABORT */
 224
 225 #define TYPE_SCTP_SHUTDOWN { \
 226         /* SCTP_STATE_CLOSED */ \
 227         TYPE_SCTP_FUNC(sctp_sf_ootb), \
 228         /* SCTP_STATE_COOKIE_WAIT */ \
 229         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 230         /* SCTP_STATE_COOKIE_ECHOED */ \
 231         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 232         /* SCTP_STATE_ESTABLISHED */ \
 233         TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
 234         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 235         TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
 236         /* SCTP_STATE_SHUTDOWN_SENT */ \
 237         TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
 238         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 239         TYPE_SCTP_FUNC(sctp_sf_do_9_2_shut_ctsn), \
 240         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 241         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 242 } /* TYPE_SCTP_SHUTDOWN */
 243
 244 #define TYPE_SCTP_SHUTDOWN_ACK { \
 245         /* SCTP_STATE_CLOSED */ \
 246         TYPE_SCTP_FUNC(sctp_sf_ootb), \
 247         /* SCTP_STATE_COOKIE_WAIT */ \
 248         TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
 249         /* SCTP_STATE_COOKIE_ECHOED */ \
 250         TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
 251         /* SCTP_STATE_ESTABLISHED */ \
 252         TYPE_SCTP_FUNC(sctp_sf_violation), \
 253         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 254         TYPE_SCTP_FUNC(sctp_sf_violation), \
 255         /* SCTP_STATE_SHUTDOWN_SENT */ \
 256         TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
 257         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 258         TYPE_SCTP_FUNC(sctp_sf_violation), \
 259         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 260         TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
 261 } /* TYPE_SCTP_SHUTDOWN_ACK */
 262
 263 #define TYPE_SCTP_ERROR { \
 264         /* SCTP_STATE_CLOSED */ \
 265         TYPE_SCTP_FUNC(sctp_sf_ootb), \
 266         /* SCTP_STATE_COOKIE_WAIT */ \
 267         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 268         /* SCTP_STATE_COOKIE_ECHOED */ \
 269         TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_err), \
 270         /* SCTP_STATE_ESTABLISHED */ \
 271         TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
 272         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 273         TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
 274         /* SCTP_STATE_SHUTDOWN_SENT */ \
 275         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 276         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 277         TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
 278         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 279         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 280 } /* TYPE_SCTP_ERROR */
 281
 282 #define TYPE_SCTP_COOKIE_ECHO { \
 283         /* SCTP_STATE_CLOSED */ \
 284         TYPE_SCTP_FUNC(sctp_sf_do_5_1D_ce), \
 285         /* SCTP_STATE_COOKIE_WAIT */ \
 286         TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
 287         /* SCTP_STATE_COOKIE_ECHOED */ \
 288         TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
 289         /* SCTP_STATE_ESTABLISHED */ \
 290         TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
 291         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 292         TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
 293         /* SCTP_STATE_SHUTDOWN_SENT */ \
 294         TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
 295         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 296         TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
 297         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 298         TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
 299 } /* TYPE_SCTP_COOKIE_ECHO */
 300
 301 #define TYPE_SCTP_COOKIE_ACK { \
 302         /* SCTP_STATE_CLOSED */ \
 303         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 304         /* SCTP_STATE_COOKIE_WAIT */ \
 305         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 306         /* SCTP_STATE_COOKIE_ECHOED */ \
 307         TYPE_SCTP_FUNC(sctp_sf_do_5_1E_ca), \
 308         /* SCTP_STATE_ESTABLISHED */ \
 309         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 310         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 311         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 312         /* SCTP_STATE_SHUTDOWN_SENT */ \
 313         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 314         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 315         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 316         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 317         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 318 } /* TYPE_SCTP_COOKIE_ACK */
 319
 320 #define TYPE_SCTP_ECN_ECNE { \
 321         /* SCTP_STATE_CLOSED */ \
 322         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 323         /* SCTP_STATE_COOKIE_WAIT */ \
 324         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 325         /* SCTP_STATE_COOKIE_ECHOED */ \
 326         TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
 327         /* SCTP_STATE_ESTABLISHED */ \
 328         TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
 329         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 330         TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
 331         /* SCTP_STATE_SHUTDOWN_SENT */ \
 332         TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
 333         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 334         TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
 335         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 336         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 337 } /* TYPE_SCTP_ECN_ECNE */
 338
 339 #define TYPE_SCTP_ECN_CWR { \
 340         /* SCTP_STATE_CLOSED */ \
 341         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 342         /* SCTP_STATE_COOKIE_WAIT */ \
 343         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 344         /* SCTP_STATE_COOKIE_ECHOED */ \
 345         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 346         /* SCTP_STATE_ESTABLISHED */ \
 347         TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
 348         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 349         TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
 350         /* SCTP_STATE_SHUTDOWN_SENT */ \
 351         TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
 352         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 353         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 354         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 355         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 356 } /* TYPE_SCTP_ECN_CWR */
 357
 358 #define TYPE_SCTP_SHUTDOWN_COMPLETE { \
 359         /* SCTP_STATE_CLOSED */ \
 360         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 361         /* SCTP_STATE_COOKIE_WAIT */ \
 362         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 363         /* SCTP_STATE_COOKIE_ECHOED */ \
 364         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 365         /* SCTP_STATE_ESTABLISHED */ \
 366         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 367         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 368         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 369         /* SCTP_STATE_SHUTDOWN_SENT */ \
 370         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 371         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 372         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 373         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 374         TYPE_SCTP_FUNC(sctp_sf_do_4_C), \
 375 } /* TYPE_SCTP_SHUTDOWN_COMPLETE */
 376
 377 /* The primary index for this table is the chunk type.
 378  * The secondary index for this table is the state.
 379  *
 380  * For base protocol (RFC 2960).
 381  */
 382 static const struct sctp_sm_table_entry
 383 chunk_event_table[SCTP_NUM_BASE_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
 384         TYPE_SCTP_DATA,
 385         TYPE_SCTP_INIT,
 386         TYPE_SCTP_INIT_ACK,
 387         TYPE_SCTP_SACK,
 388         TYPE_SCTP_HEARTBEAT,
 389         TYPE_SCTP_HEARTBEAT_ACK,
 390         TYPE_SCTP_ABORT,
 391         TYPE_SCTP_SHUTDOWN,
 392         TYPE_SCTP_SHUTDOWN_ACK,
 393         TYPE_SCTP_ERROR,
 394         TYPE_SCTP_COOKIE_ECHO,
 395         TYPE_SCTP_COOKIE_ACK,
 396         TYPE_SCTP_ECN_ECNE,
 397         TYPE_SCTP_ECN_CWR,
 398         TYPE_SCTP_SHUTDOWN_COMPLETE,
 399 }; /* state_fn_t chunk_event_table[][] */
 400
 401 #define TYPE_SCTP_ASCONF { \
 402         /* SCTP_STATE_CLOSED */ \
 403         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 404         /* SCTP_STATE_COOKIE_WAIT */ \
 405         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 406         /* SCTP_STATE_COOKIE_ECHOED */ \
 407         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 408         /* SCTP_STATE_ESTABLISHED */ \
 409         TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
 410         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 411         TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
 412         /* SCTP_STATE_SHUTDOWN_SENT */ \
 413         TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
 414         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 415         TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
 416         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 417         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 418 } /* TYPE_SCTP_ASCONF */
 419
 420 #define TYPE_SCTP_ASCONF_ACK { \
 421         /* SCTP_STATE_CLOSED */ \
 422         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 423         /* SCTP_STATE_COOKIE_WAIT */ \
 424         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 425         /* SCTP_STATE_COOKIE_ECHOED */ \
 426         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 427         /* SCTP_STATE_ESTABLISHED */ \
 428         TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
 429         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 430         TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
 431         /* SCTP_STATE_SHUTDOWN_SENT */ \
 432         TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
 433         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 434         TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
 435         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 436         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 437 } /* TYPE_SCTP_ASCONF_ACK */
 438
 439 /* The primary index for this table is the chunk type.
 440  * The secondary index for this table is the state.
 441  */
 442 static const struct sctp_sm_table_entry
 443 addip_chunk_event_table[SCTP_NUM_ADDIP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
 444         TYPE_SCTP_ASCONF,
 445         TYPE_SCTP_ASCONF_ACK,
 446 }; /*state_fn_t addip_chunk_event_table[][] */
 447
 448 #define TYPE_SCTP_FWD_TSN { \
 449         /* SCTP_STATE_CLOSED */ \
 450         TYPE_SCTP_FUNC(sctp_sf_ootb), \
 451         /* SCTP_STATE_COOKIE_WAIT */ \
 452         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 453         /* SCTP_STATE_COOKIE_ECHOED */ \
 454         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 455         /* SCTP_STATE_ESTABLISHED */ \
 456         TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
 457         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 458         TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
 459         /* SCTP_STATE_SHUTDOWN_SENT */ \
 460         TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn_fast), \
 461         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 462         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 463         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 464         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 465 } /* TYPE_SCTP_FWD_TSN */
 466
 467 /* The primary index for this table is the chunk type.
 468  * The secondary index for this table is the state.
 469  */
 470 static const struct sctp_sm_table_entry
 471 prsctp_chunk_event_table[SCTP_NUM_PRSCTP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
 472         TYPE_SCTP_FWD_TSN,
 473 }; /*state_fn_t prsctp_chunk_event_table[][] */
 474
 475 #define TYPE_SCTP_RECONF { \
 476         /* SCTP_STATE_CLOSED */ \
 477         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 478         /* SCTP_STATE_COOKIE_WAIT */ \
 479         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 480         /* SCTP_STATE_COOKIE_ECHOED */ \
 481         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 482         /* SCTP_STATE_ESTABLISHED */ \
 483         TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
 484         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 485         TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
 486         /* SCTP_STATE_SHUTDOWN_SENT */ \
 487         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 488         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 489         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 490         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 491         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 492 } /* TYPE_SCTP_RECONF */
 493
 494 /* The primary index for this table is the chunk type.
 495  * The secondary index for this table is the state.
 496  */
 497 static const struct sctp_sm_table_entry
 498 reconf_chunk_event_table[SCTP_NUM_RECONF_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
 499         TYPE_SCTP_RECONF,
 500 }; /*state_fn_t reconf_chunk_event_table[][] */
 501
 502 #define TYPE_SCTP_AUTH { \
 503         /* SCTP_STATE_CLOSED */ \
 504         TYPE_SCTP_FUNC(sctp_sf_ootb), \
 505         /* SCTP_STATE_COOKIE_WAIT */ \
 506         TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
 507         /* SCTP_STATE_COOKIE_ECHOED */ \
 508         TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
 509         /* SCTP_STATE_ESTABLISHED */ \
 510         TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
 511         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 512         TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
 513         /* SCTP_STATE_SHUTDOWN_SENT */ \
 514         TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
 515         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 516         TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
 517         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 518         TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
 519 } /* TYPE_SCTP_AUTH */
 520
 521 /* The primary index for this table is the chunk type.
 522  * The secondary index for this table is the state.
 523  */
 524 static const struct sctp_sm_table_entry
 525 auth_chunk_event_table[SCTP_NUM_AUTH_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
 526         TYPE_SCTP_AUTH,
 527 }; /*state_fn_t auth_chunk_event_table[][] */
 528
 529 static const struct sctp_sm_table_entry
 530 pad_chunk_event_table[SCTP_STATE_NUM_STATES] = {
 531         /* SCTP_STATE_CLOSED */
 532         TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
 533         /* SCTP_STATE_COOKIE_WAIT */
 534         TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
 535         /* SCTP_STATE_COOKIE_ECHOED */
 536         TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
 537         /* SCTP_STATE_ESTABLISHED */
 538         TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
 539         /* SCTP_STATE_SHUTDOWN_PENDING */
 540         TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
 541         /* SCTP_STATE_SHUTDOWN_SENT */
 542         TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
 543         /* SCTP_STATE_SHUTDOWN_RECEIVED */
 544         TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
 545         /* SCTP_STATE_SHUTDOWN_ACK_SENT */
 546         TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
 547 };      /* chunk pad */
 548
 549 static const struct sctp_sm_table_entry
 550 chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
 551         /* SCTP_STATE_CLOSED */
 552         TYPE_SCTP_FUNC(sctp_sf_ootb),
 553         /* SCTP_STATE_COOKIE_WAIT */
 554         TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
 555         /* SCTP_STATE_COOKIE_ECHOED */
 556         TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
 557         /* SCTP_STATE_ESTABLISHED */
 558         TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
 559         /* SCTP_STATE_SHUTDOWN_PENDING */
 560         TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
 561         /* SCTP_STATE_SHUTDOWN_SENT */
 562         TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
 563         /* SCTP_STATE_SHUTDOWN_RECEIVED */
 564         TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
 565         /* SCTP_STATE_SHUTDOWN_ACK_SENT */
 566         TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
 567 };      /* chunk unknown */
 568
 569
 570 #define TYPE_SCTP_PRIMITIVE_ASSOCIATE  { \
 571         /* SCTP_STATE_CLOSED */ \
 572         TYPE_SCTP_FUNC(sctp_sf_do_prm_asoc), \
 573         /* SCTP_STATE_COOKIE_WAIT */ \
 574         TYPE_SCTP_FUNC(sctp_sf_not_impl), \
 575         /* SCTP_STATE_COOKIE_ECHOED */ \
 576         TYPE_SCTP_FUNC(sctp_sf_not_impl), \
 577         /* SCTP_STATE_ESTABLISHED */ \
 578         TYPE_SCTP_FUNC(sctp_sf_not_impl), \
 579         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 580         TYPE_SCTP_FUNC(sctp_sf_not_impl), \
 581         /* SCTP_STATE_SHUTDOWN_SENT */ \
 582         TYPE_SCTP_FUNC(sctp_sf_not_impl), \
 583         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 584         TYPE_SCTP_FUNC(sctp_sf_not_impl), \
 585         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 586         TYPE_SCTP_FUNC(sctp_sf_not_impl), \
 587 } /* TYPE_SCTP_PRIMITIVE_ASSOCIATE */
 588
 589 #define TYPE_SCTP_PRIMITIVE_SHUTDOWN  { \
 590         /* SCTP_STATE_CLOSED */ \
 591         TYPE_SCTP_FUNC(sctp_sf_error_closed), \
 592         /* SCTP_STATE_COOKIE_WAIT */ \
 593         TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_shutdown), \
 594         /* SCTP_STATE_COOKIE_ECHOED */ \
 595         TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_shutdown),\
 596         /* SCTP_STATE_ESTABLISHED */ \
 597         TYPE_SCTP_FUNC(sctp_sf_do_9_2_prm_shutdown), \
 598         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 599         TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
 600         /* SCTP_STATE_SHUTDOWN_SENT */ \
 601         TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
 602         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 603         TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
 604         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 605         TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
 606 } /* TYPE_SCTP_PRIMITIVE_SHUTDOWN */
 607
 608 #define TYPE_SCTP_PRIMITIVE_ABORT  { \
 609         /* SCTP_STATE_CLOSED */ \
 610         TYPE_SCTP_FUNC(sctp_sf_error_closed), \
 611         /* SCTP_STATE_COOKIE_WAIT */ \
 612         TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_abort), \
 613         /* SCTP_STATE_COOKIE_ECHOED */ \
 614         TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_abort), \
 615         /* SCTP_STATE_ESTABLISHED */ \
 616         TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
 617         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 618         TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_prm_abort), \
 619         /* SCTP_STATE_SHUTDOWN_SENT */ \
 620         TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_prm_abort), \
 621         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 622         TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
 623         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 624         TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_prm_abort), \
 625 } /* TYPE_SCTP_PRIMITIVE_ABORT */
 626
 627 #define TYPE_SCTP_PRIMITIVE_SEND  { \
 628         /* SCTP_STATE_CLOSED */ \
 629         TYPE_SCTP_FUNC(sctp_sf_error_closed), \
 630         /* SCTP_STATE_COOKIE_WAIT */ \
 631         TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
 632         /* SCTP_STATE_COOKIE_ECHOED */ \
 633         TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
 634         /* SCTP_STATE_ESTABLISHED */ \
 635         TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
 636         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 637         TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
 638         /* SCTP_STATE_SHUTDOWN_SENT */ \
 639         TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
 640         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 641         TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
 642         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 643         TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
 644 } /* TYPE_SCTP_PRIMITIVE_SEND */
 645
 646 #define TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT  { \
 647         /* SCTP_STATE_CLOSED */ \
 648         TYPE_SCTP_FUNC(sctp_sf_error_closed), \
 649         /* SCTP_STATE_COOKIE_WAIT */ \
 650         TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
 651         /* SCTP_STATE_COOKIE_ECHOED */ \
 652         TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
 653         /* SCTP_STATE_ESTABLISHED */ \
 654         TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
 655         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 656         TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
 657         /* SCTP_STATE_SHUTDOWN_SENT */ \
 658         TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
 659         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 660         TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
 661         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 662         TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
 663 } /* TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT */
 664
 665 #define TYPE_SCTP_PRIMITIVE_ASCONF { \
 666         /* SCTP_STATE_CLOSED */ \
 667         TYPE_SCTP_FUNC(sctp_sf_error_closed), \
 668         /* SCTP_STATE_COOKIE_WAIT */ \
 669         TYPE_SCTP_FUNC(sctp_sf_error_closed), \
 670         /* SCTP_STATE_COOKIE_ECHOED */ \
 671         TYPE_SCTP_FUNC(sctp_sf_error_closed), \
 672         /* SCTP_STATE_ESTABLISHED */ \
 673         TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
 674         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 675         TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
 676         /* SCTP_STATE_SHUTDOWN_SENT */ \
 677         TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
 678         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 679         TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
 680         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 681         TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
 682 } /* TYPE_SCTP_PRIMITIVE_ASCONF */
 683
 684 #define TYPE_SCTP_PRIMITIVE_RECONF { \
 685         /* SCTP_STATE_CLOSED */ \
 686         TYPE_SCTP_FUNC(sctp_sf_error_closed), \
 687         /* SCTP_STATE_COOKIE_WAIT */ \
 688         TYPE_SCTP_FUNC(sctp_sf_error_closed), \
 689         /* SCTP_STATE_COOKIE_ECHOED */ \
 690         TYPE_SCTP_FUNC(sctp_sf_error_closed), \
 691         /* SCTP_STATE_ESTABLISHED */ \
 692         TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
 693         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 694         TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
 695         /* SCTP_STATE_SHUTDOWN_SENT */ \
 696         TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
 697         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 698         TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
 699         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 700         TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
 701 } /* TYPE_SCTP_PRIMITIVE_RECONF */
 702
 703 /* The primary index for this table is the primitive type.
 704  * The secondary index for this table is the state.
 705  */
 706 static const struct sctp_sm_table_entry
 707 primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES] = {
 708         TYPE_SCTP_PRIMITIVE_ASSOCIATE,
 709         TYPE_SCTP_PRIMITIVE_SHUTDOWN,
 710         TYPE_SCTP_PRIMITIVE_ABORT,
 711         TYPE_SCTP_PRIMITIVE_SEND,
 712         TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT,
 713         TYPE_SCTP_PRIMITIVE_ASCONF,
 714         TYPE_SCTP_PRIMITIVE_RECONF,
 715 };
 716
 717 #define TYPE_SCTP_OTHER_NO_PENDING_TSN  { \
 718         /* SCTP_STATE_CLOSED */ \
 719         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 720         /* SCTP_STATE_COOKIE_WAIT */ \
 721         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 722         /* SCTP_STATE_COOKIE_ECHOED */ \
 723         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 724         /* SCTP_STATE_ESTABLISHED */ \
 725         TYPE_SCTP_FUNC(sctp_sf_do_no_pending_tsn), \
 726         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 727         TYPE_SCTP_FUNC(sctp_sf_do_9_2_start_shutdown), \
 728         /* SCTP_STATE_SHUTDOWN_SENT */ \
 729         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 730         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 731         TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
 732         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 733         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 734 }
 735
 736 #define TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH  { \
 737         /* SCTP_STATE_CLOSED */ \
 738         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 739         /* SCTP_STATE_COOKIE_WAIT */ \
 740         TYPE_SCTP_FUNC(sctp_sf_cookie_wait_icmp_abort), \
 741         /* SCTP_STATE_COOKIE_ECHOED */ \
 742         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 743         /* SCTP_STATE_ESTABLISHED */ \
 744         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 745         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 746         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 747         /* SCTP_STATE_SHUTDOWN_SENT */ \
 748         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 749         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 750         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 751         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 752         TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
 753 }
 754
 755 static const struct sctp_sm_table_entry
 756 other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES] = {
 757         TYPE_SCTP_OTHER_NO_PENDING_TSN,
 758         TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH,
 759 };
 760
 761 #define TYPE_SCTP_EVENT_TIMEOUT_NONE { \
 762         /* SCTP_STATE_CLOSED */ \
 763         TYPE_SCTP_FUNC(sctp_sf_bug), \
 764         /* SCTP_STATE_COOKIE_WAIT */ \
 765         TYPE_SCTP_FUNC(sctp_sf_bug), \
 766         /* SCTP_STATE_COOKIE_ECHOED */ \
 767         TYPE_SCTP_FUNC(sctp_sf_bug), \
 768         /* SCTP_STATE_ESTABLISHED */ \
 769         TYPE_SCTP_FUNC(sctp_sf_bug), \
 770         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 771         TYPE_SCTP_FUNC(sctp_sf_bug), \
 772         /* SCTP_STATE_SHUTDOWN_SENT */ \
 773         TYPE_SCTP_FUNC(sctp_sf_bug), \
 774         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 775         TYPE_SCTP_FUNC(sctp_sf_bug), \
 776         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 777         TYPE_SCTP_FUNC(sctp_sf_bug), \
 778 }
 779
 780 #define TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE { \
 781         /* SCTP_STATE_CLOSED */ \
 782         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 783         /* SCTP_STATE_COOKIE_WAIT */ \
 784         TYPE_SCTP_FUNC(sctp_sf_bug), \
 785         /* SCTP_STATE_COOKIE_ECHOED */ \
 786         TYPE_SCTP_FUNC(sctp_sf_t1_cookie_timer_expire), \
 787         /* SCTP_STATE_ESTABLISHED */ \
 788         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 789         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 790         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 791         /* SCTP_STATE_SHUTDOWN_SENT */ \
 792         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 793         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 794         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 795         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 796         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 797 }
 798
 799 #define TYPE_SCTP_EVENT_TIMEOUT_T1_INIT { \
 800         /* SCTP_STATE_CLOSED */ \
 801         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 802         /* SCTP_STATE_COOKIE_WAIT */ \
 803         TYPE_SCTP_FUNC(sctp_sf_t1_init_timer_expire), \
 804         /* SCTP_STATE_COOKIE_ECHOED */ \
 805         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 806         /* SCTP_STATE_ESTABLISHED */ \
 807         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 808         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 809         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 810         /* SCTP_STATE_SHUTDOWN_SENT */ \
 811         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 812         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 813         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 814         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 815         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 816 }
 817
 818 #define TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN { \
 819         /* SCTP_STATE_CLOSED */ \
 820         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 821         /* SCTP_STATE_COOKIE_WAIT */ \
 822         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 823         /* SCTP_STATE_COOKIE_ECHOED */ \
 824         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 825         /* SCTP_STATE_ESTABLISHED */ \
 826         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 827         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 828         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 829         /* SCTP_STATE_SHUTDOWN_SENT */ \
 830         TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
 831         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 832         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 833         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 834         TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
 835 }
 836
 837 #define TYPE_SCTP_EVENT_TIMEOUT_T3_RTX { \
 838         /* SCTP_STATE_CLOSED */ \
 839         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 840         /* SCTP_STATE_COOKIE_WAIT */ \
 841         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 842         /* SCTP_STATE_COOKIE_ECHOED */ \
 843         TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
 844         /* SCTP_STATE_ESTABLISHED */ \
 845         TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
 846         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 847         TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
 848         /* SCTP_STATE_SHUTDOWN_SENT */ \
 849         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 850         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 851         TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
 852         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 853         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 854 }
 855
 856 #define TYPE_SCTP_EVENT_TIMEOUT_T4_RTO { \
 857         /* SCTP_STATE_CLOSED */ \
 858         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 859         /* SCTP_STATE_COOKIE_WAIT */ \
 860         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 861         /* SCTP_STATE_COOKIE_ECHOED */ \
 862         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 863         /* SCTP_STATE_ESTABLISHED */ \
 864         TYPE_SCTP_FUNC(sctp_sf_t4_timer_expire), \
 865         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 866         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 867         /* SCTP_STATE_SHUTDOWN_SENT */ \
 868         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 869         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 870         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 871         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 872         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 873 }
 874
 875 #define TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD { \
 876         /* SCTP_STATE_CLOSED */ \
 877         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 878         /* SCTP_STATE_COOKIE_WAIT */ \
 879         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 880         /* SCTP_STATE_COOKIE_ECHOED */ \
 881         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 882         /* SCTP_STATE_ESTABLISHED */ \
 883         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 884         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 885         TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
 886         /* SCTP_STATE_SHUTDOWN_SENT */ \
 887         TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
 888         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 889         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 890         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 891         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 892 }
 893
 894 #define TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT { \
 895         /* SCTP_STATE_CLOSED */ \
 896         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 897         /* SCTP_STATE_COOKIE_WAIT */ \
 898         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 899         /* SCTP_STATE_COOKIE_ECHOED */ \
 900         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 901         /* SCTP_STATE_ESTABLISHED */ \
 902         TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
 903         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 904         TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
 905         /* SCTP_STATE_SHUTDOWN_SENT */ \
 906         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 907         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 908         TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
 909         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 910         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 911 }
 912
 913 #define TYPE_SCTP_EVENT_TIMEOUT_SACK { \
 914         /* SCTP_STATE_CLOSED */ \
 915         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 916         /* SCTP_STATE_COOKIE_WAIT */ \
 917         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 918         /* SCTP_STATE_COOKIE_ECHOED */ \
 919         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 920         /* SCTP_STATE_ESTABLISHED */ \
 921         TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
 922         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 923         TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
 924         /* SCTP_STATE_SHUTDOWN_SENT */ \
 925         TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
 926         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 927         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 928         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 929         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 930 }
 931
 932 #define TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE { \
 933         /* SCTP_STATE_CLOSED */ \
 934         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 935         /* SCTP_STATE_COOKIE_WAIT */ \
 936         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 937         /* SCTP_STATE_COOKIE_ECHOED */ \
 938         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 939         /* SCTP_STATE_ESTABLISHED */ \
 940         TYPE_SCTP_FUNC(sctp_sf_autoclose_timer_expire), \
 941         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 942         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 943         /* SCTP_STATE_SHUTDOWN_SENT */ \
 944         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 945         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 946         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 947         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 948         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 949 }
 950
 951 #define TYPE_SCTP_EVENT_TIMEOUT_RECONF { \
 952         /* SCTP_STATE_CLOSED */ \
 953         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 954         /* SCTP_STATE_COOKIE_WAIT */ \
 955         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 956         /* SCTP_STATE_COOKIE_ECHOED */ \
 957         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 958         /* SCTP_STATE_ESTABLISHED */ \
 959         TYPE_SCTP_FUNC(sctp_sf_send_reconf), \
 960         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 961         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 962         /* SCTP_STATE_SHUTDOWN_SENT */ \
 963         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 964         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 965         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 966         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 967         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 968 }
 969
 970 #define TYPE_SCTP_EVENT_TIMEOUT_PROBE { \
 971         /* SCTP_STATE_CLOSED */ \
 972         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 973         /* SCTP_STATE_COOKIE_WAIT */ \
 974         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 975         /* SCTP_STATE_COOKIE_ECHOED */ \
 976         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 977         /* SCTP_STATE_ESTABLISHED */ \
 978         TYPE_SCTP_FUNC(sctp_sf_send_probe), \
 979         /* SCTP_STATE_SHUTDOWN_PENDING */ \
 980         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 981         /* SCTP_STATE_SHUTDOWN_SENT */ \
 982         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 983         /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
 984         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 985         /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
 986         TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
 987 }
 988
 989 static const struct sctp_sm_table_entry
 990 timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES] = {
 991         TYPE_SCTP_EVENT_TIMEOUT_NONE,
 992         TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE,
 993         TYPE_SCTP_EVENT_TIMEOUT_T1_INIT,
 994         TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN,
 995         TYPE_SCTP_EVENT_TIMEOUT_T3_RTX,
 996         TYPE_SCTP_EVENT_TIMEOUT_T4_RTO,
 997         TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD,
 998         TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT,
 999         TYPE_SCTP_EVENT_TIMEOUT_RECONF,
1000         TYPE_SCTP_EVENT_TIMEOUT_PROBE,
1001         TYPE_SCTP_EVENT_TIMEOUT_SACK,
1002         TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE,
1003 };
1004
1005 static const struct sctp_sm_table_entry *sctp_chunk_event_lookup(
1006                                                 struct net *net,
1007                                                 enum sctp_cid cid,
1008                                                 enum sctp_state state)
1009 {
1010         if (state > SCTP_STATE_MAX)
1011                 return &bug;
1012
1013         if (cid == SCTP_CID_I_DATA)
1014                 cid = SCTP_CID_DATA;
1015
1016         if (cid <= SCTP_CID_BASE_MAX)
1017                 return &chunk_event_table[cid][state];
1018
1019         switch ((u16)cid) {
1020         case SCTP_CID_FWD_TSN:
1021         case SCTP_CID_I_FWD_TSN:
1022                 return &prsctp_chunk_event_table[0][state];
1023
1024         case SCTP_CID_ASCONF:
1025                 return &addip_chunk_event_table[0][state];
1026
1027         case SCTP_CID_ASCONF_ACK:
1028                 return &addip_chunk_event_table[1][state];
1029
1030         case SCTP_CID_RECONF:
1031                 return &reconf_chunk_event_table[0][state];
1032
1033         case SCTP_CID_AUTH:
1034                 return &auth_chunk_event_table[0][state];
1035
1036         case SCTP_CID_PAD:
1037                 return &pad_chunk_event_table[state];
1038         }
1039
1040         return &chunk_event_table_unknown[state];
1041 }