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0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /* SCTP kernel implementation
0003  * (C) Copyright IBM Corp. 2001, 2004
0004  * Copyright (c) 1999-2000 Cisco, Inc.
0005  * Copyright (c) 1999-2001 Motorola, Inc.
0006  * Copyright (c) 2001 Intel Corp.
0007  * Copyright (c) 2001 Nokia, Inc.
0008  *
0009  * This file is part of the SCTP kernel implementation
0010  *
0011  * These are the state tables for the SCTP state machine.
0012  *
0013  * Please send any bug reports or fixes you make to the
0014  * email address(es):
0015  *    lksctp developers <linux-sctp@vger.kernel.org>
0016  *
0017  * Written or modified by:
0018  *    La Monte H.P. Yarroll <piggy@acm.org>
0019  *    Karl Knutson          <karl@athena.chicago.il.us>
0020  *    Jon Grimm             <jgrimm@us.ibm.com>
0021  *    Hui Huang         <hui.huang@nokia.com>
0022  *    Daisy Chang       <daisyc@us.ibm.com>
0023  *    Ardelle Fan       <ardelle.fan@intel.com>
0024  *    Sridhar Samudrala     <sri@us.ibm.com>
0025  */
0026 
0027 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
0028 
0029 #include <linux/skbuff.h>
0030 #include <net/sctp/sctp.h>
0031 #include <net/sctp/sm.h>
0032 
0033 static const struct sctp_sm_table_entry
0034 primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES];
0035 static const struct sctp_sm_table_entry
0036 other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES];
0037 static const struct sctp_sm_table_entry
0038 timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES];
0039 
0040 static const struct sctp_sm_table_entry *sctp_chunk_event_lookup(
0041                         struct net *net,
0042                         enum sctp_cid cid,
0043                         enum sctp_state state);
0044 
0045 
0046 static const struct sctp_sm_table_entry bug = {
0047     .fn = sctp_sf_bug,
0048     .name = "sctp_sf_bug"
0049 };
0050 
0051 #define DO_LOOKUP(_max, _type, _table)                  \
0052 ({                                  \
0053     const struct sctp_sm_table_entry *rtn;              \
0054                                     \
0055     if ((event_subtype._type > (_max))) {               \
0056         pr_warn("table %p possible attack: event %d exceeds max %d\n", \
0057             _table, event_subtype._type, _max);     \
0058         rtn = &bug;                     \
0059     } else                              \
0060         rtn = &_table[event_subtype._type][(int)state];     \
0061                                     \
0062     rtn;                                \
0063 })
0064 
0065 const struct sctp_sm_table_entry *sctp_sm_lookup_event(
0066                     struct net *net,
0067                     enum sctp_event_type event_type,
0068                     enum sctp_state state,
0069                     union sctp_subtype event_subtype)
0070 {
0071     switch (event_type) {
0072     case SCTP_EVENT_T_CHUNK:
0073         return sctp_chunk_event_lookup(net, event_subtype.chunk, state);
0074     case SCTP_EVENT_T_TIMEOUT:
0075         return DO_LOOKUP(SCTP_EVENT_TIMEOUT_MAX, timeout,
0076                  timeout_event_table);
0077     case SCTP_EVENT_T_OTHER:
0078         return DO_LOOKUP(SCTP_EVENT_OTHER_MAX, other,
0079                  other_event_table);
0080     case SCTP_EVENT_T_PRIMITIVE:
0081         return DO_LOOKUP(SCTP_EVENT_PRIMITIVE_MAX, primitive,
0082                  primitive_event_table);
0083     default:
0084         /* Yikes!  We got an illegal event type.  */
0085         return &bug;
0086     }
0087 }
0088 
0089 #define TYPE_SCTP_FUNC(func) {.fn = func, .name = #func}
0090 
0091 #define TYPE_SCTP_DATA { \
0092     /* SCTP_STATE_CLOSED */ \
0093     TYPE_SCTP_FUNC(sctp_sf_ootb), \
0094     /* SCTP_STATE_COOKIE_WAIT */ \
0095     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0096     /* SCTP_STATE_COOKIE_ECHOED */ \
0097     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0098     /* SCTP_STATE_ESTABLISHED */ \
0099     TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
0100     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0101     TYPE_SCTP_FUNC(sctp_sf_eat_data_6_2), \
0102     /* SCTP_STATE_SHUTDOWN_SENT */ \
0103     TYPE_SCTP_FUNC(sctp_sf_eat_data_fast_4_4), \
0104     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0105     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0106     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0107     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0108 } /* TYPE_SCTP_DATA */
0109 
0110 #define TYPE_SCTP_INIT { \
0111     /* SCTP_STATE_CLOSED */ \
0112     TYPE_SCTP_FUNC(sctp_sf_do_5_1B_init), \
0113     /* SCTP_STATE_COOKIE_WAIT */ \
0114     TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
0115     /* SCTP_STATE_COOKIE_ECHOED */ \
0116     TYPE_SCTP_FUNC(sctp_sf_do_5_2_1_siminit), \
0117     /* SCTP_STATE_ESTABLISHED */ \
0118     TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
0119     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0120     TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
0121     /* SCTP_STATE_SHUTDOWN_SENT */ \
0122     TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
0123     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0124     TYPE_SCTP_FUNC(sctp_sf_do_5_2_2_dupinit), \
0125     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0126     TYPE_SCTP_FUNC(sctp_sf_do_9_2_reshutack), \
0127 } /* TYPE_SCTP_INIT */
0128 
0129 #define TYPE_SCTP_INIT_ACK { \
0130     /* SCTP_STATE_CLOSED */ \
0131     TYPE_SCTP_FUNC(sctp_sf_do_5_2_3_initack), \
0132     /* SCTP_STATE_COOKIE_WAIT */ \
0133     TYPE_SCTP_FUNC(sctp_sf_do_5_1C_ack), \
0134     /* SCTP_STATE_COOKIE_ECHOED */ \
0135     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0136     /* SCTP_STATE_ESTABLISHED */ \
0137     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0138     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0139     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0140     /* SCTP_STATE_SHUTDOWN_SENT */ \
0141     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0142     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0143     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0144     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0145     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0146 } /* TYPE_SCTP_INIT_ACK */
0147 
0148 #define TYPE_SCTP_SACK { \
0149     /* SCTP_STATE_CLOSED */ \
0150     TYPE_SCTP_FUNC(sctp_sf_ootb), \
0151     /* SCTP_STATE_COOKIE_WAIT */ \
0152     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0153     /* SCTP_STATE_COOKIE_ECHOED */ \
0154     TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
0155     /* SCTP_STATE_ESTABLISHED */ \
0156     TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
0157     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0158     TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
0159     /* SCTP_STATE_SHUTDOWN_SENT */ \
0160     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0161     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0162     TYPE_SCTP_FUNC(sctp_sf_eat_sack_6_2), \
0163     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0164     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0165 } /* TYPE_SCTP_SACK */
0166 
0167 #define TYPE_SCTP_HEARTBEAT { \
0168     /* SCTP_STATE_CLOSED */ \
0169     TYPE_SCTP_FUNC(sctp_sf_ootb), \
0170     /* SCTP_STATE_COOKIE_WAIT */ \
0171     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0172     /* SCTP_STATE_COOKIE_ECHOED */ \
0173     TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
0174     /* SCTP_STATE_ESTABLISHED */ \
0175     TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
0176     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0177     TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
0178     /* SCTP_STATE_SHUTDOWN_SENT */ \
0179     TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
0180     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0181     TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
0182     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0183     /* This should not happen, but we are nice.  */ \
0184     TYPE_SCTP_FUNC(sctp_sf_beat_8_3), \
0185 } /* TYPE_SCTP_HEARTBEAT */
0186 
0187 #define TYPE_SCTP_HEARTBEAT_ACK { \
0188     /* SCTP_STATE_CLOSED */ \
0189     TYPE_SCTP_FUNC(sctp_sf_ootb), \
0190     /* SCTP_STATE_COOKIE_WAIT */ \
0191     TYPE_SCTP_FUNC(sctp_sf_violation), \
0192     /* SCTP_STATE_COOKIE_ECHOED */ \
0193     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0194     /* SCTP_STATE_ESTABLISHED */ \
0195     TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
0196     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0197     TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
0198     /* SCTP_STATE_SHUTDOWN_SENT */ \
0199     TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
0200     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0201     TYPE_SCTP_FUNC(sctp_sf_backbeat_8_3), \
0202     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0203     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0204 } /* TYPE_SCTP_HEARTBEAT_ACK */
0205 
0206 #define TYPE_SCTP_ABORT { \
0207     /* SCTP_STATE_CLOSED */ \
0208     TYPE_SCTP_FUNC(sctp_sf_pdiscard), \
0209     /* SCTP_STATE_COOKIE_WAIT */ \
0210     TYPE_SCTP_FUNC(sctp_sf_cookie_wait_abort), \
0211     /* SCTP_STATE_COOKIE_ECHOED */ \
0212     TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_abort), \
0213     /* SCTP_STATE_ESTABLISHED */ \
0214     TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
0215     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0216     TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_abort), \
0217     /* SCTP_STATE_SHUTDOWN_SENT */ \
0218     TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_abort), \
0219     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0220     TYPE_SCTP_FUNC(sctp_sf_do_9_1_abort), \
0221     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0222     TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_abort), \
0223 } /* TYPE_SCTP_ABORT */
0224 
0225 #define TYPE_SCTP_SHUTDOWN { \
0226     /* SCTP_STATE_CLOSED */ \
0227     TYPE_SCTP_FUNC(sctp_sf_ootb), \
0228     /* SCTP_STATE_COOKIE_WAIT */ \
0229     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0230     /* SCTP_STATE_COOKIE_ECHOED */ \
0231     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0232     /* SCTP_STATE_ESTABLISHED */ \
0233     TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
0234     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0235     TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown), \
0236     /* SCTP_STATE_SHUTDOWN_SENT */ \
0237     TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
0238     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0239     TYPE_SCTP_FUNC(sctp_sf_do_9_2_shut_ctsn), \
0240     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0241     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0242 } /* TYPE_SCTP_SHUTDOWN */
0243 
0244 #define TYPE_SCTP_SHUTDOWN_ACK { \
0245     /* SCTP_STATE_CLOSED */ \
0246     TYPE_SCTP_FUNC(sctp_sf_ootb), \
0247     /* SCTP_STATE_COOKIE_WAIT */ \
0248     TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
0249     /* SCTP_STATE_COOKIE_ECHOED */ \
0250     TYPE_SCTP_FUNC(sctp_sf_do_8_5_1_E_sa), \
0251     /* SCTP_STATE_ESTABLISHED */ \
0252     TYPE_SCTP_FUNC(sctp_sf_violation), \
0253     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0254     TYPE_SCTP_FUNC(sctp_sf_violation), \
0255     /* SCTP_STATE_SHUTDOWN_SENT */ \
0256     TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
0257     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0258     TYPE_SCTP_FUNC(sctp_sf_violation), \
0259     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0260     TYPE_SCTP_FUNC(sctp_sf_do_9_2_final), \
0261 } /* TYPE_SCTP_SHUTDOWN_ACK */
0262 
0263 #define TYPE_SCTP_ERROR { \
0264     /* SCTP_STATE_CLOSED */ \
0265     TYPE_SCTP_FUNC(sctp_sf_ootb), \
0266     /* SCTP_STATE_COOKIE_WAIT */ \
0267     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0268     /* SCTP_STATE_COOKIE_ECHOED */ \
0269     TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_err), \
0270     /* SCTP_STATE_ESTABLISHED */ \
0271     TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
0272     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0273     TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
0274     /* SCTP_STATE_SHUTDOWN_SENT */ \
0275     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0276     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0277     TYPE_SCTP_FUNC(sctp_sf_operr_notify), \
0278     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0279     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0280 } /* TYPE_SCTP_ERROR */
0281 
0282 #define TYPE_SCTP_COOKIE_ECHO { \
0283     /* SCTP_STATE_CLOSED */ \
0284     TYPE_SCTP_FUNC(sctp_sf_do_5_1D_ce), \
0285     /* SCTP_STATE_COOKIE_WAIT */ \
0286     TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
0287     /* SCTP_STATE_COOKIE_ECHOED */ \
0288     TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
0289     /* SCTP_STATE_ESTABLISHED */ \
0290     TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
0291     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0292     TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
0293     /* SCTP_STATE_SHUTDOWN_SENT */ \
0294     TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
0295     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0296     TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
0297     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0298     TYPE_SCTP_FUNC(sctp_sf_do_5_2_4_dupcook), \
0299 } /* TYPE_SCTP_COOKIE_ECHO */
0300 
0301 #define TYPE_SCTP_COOKIE_ACK { \
0302     /* SCTP_STATE_CLOSED */ \
0303     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0304     /* SCTP_STATE_COOKIE_WAIT */ \
0305     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0306     /* SCTP_STATE_COOKIE_ECHOED */ \
0307     TYPE_SCTP_FUNC(sctp_sf_do_5_1E_ca), \
0308     /* SCTP_STATE_ESTABLISHED */ \
0309     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0310     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0311     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0312     /* SCTP_STATE_SHUTDOWN_SENT */ \
0313     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0314     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0315     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0316     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0317     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0318 } /* TYPE_SCTP_COOKIE_ACK */
0319 
0320 #define TYPE_SCTP_ECN_ECNE { \
0321     /* SCTP_STATE_CLOSED */ \
0322     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0323     /* SCTP_STATE_COOKIE_WAIT */ \
0324     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0325     /* SCTP_STATE_COOKIE_ECHOED */ \
0326     TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
0327     /* SCTP_STATE_ESTABLISHED */ \
0328     TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
0329     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0330     TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
0331     /* SCTP_STATE_SHUTDOWN_SENT */ \
0332     TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
0333     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0334     TYPE_SCTP_FUNC(sctp_sf_do_ecne), \
0335     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0336     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0337 } /* TYPE_SCTP_ECN_ECNE */
0338 
0339 #define TYPE_SCTP_ECN_CWR { \
0340     /* SCTP_STATE_CLOSED */ \
0341     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0342     /* SCTP_STATE_COOKIE_WAIT */ \
0343     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0344     /* SCTP_STATE_COOKIE_ECHOED */ \
0345     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0346     /* SCTP_STATE_ESTABLISHED */ \
0347     TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
0348     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0349     TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
0350     /* SCTP_STATE_SHUTDOWN_SENT */ \
0351     TYPE_SCTP_FUNC(sctp_sf_do_ecn_cwr), \
0352     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0353     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0354     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0355     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0356 } /* TYPE_SCTP_ECN_CWR */
0357 
0358 #define TYPE_SCTP_SHUTDOWN_COMPLETE { \
0359     /* SCTP_STATE_CLOSED */ \
0360     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0361     /* SCTP_STATE_COOKIE_WAIT */ \
0362     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0363     /* SCTP_STATE_COOKIE_ECHOED */ \
0364     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0365     /* SCTP_STATE_ESTABLISHED */ \
0366     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0367     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0368     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0369     /* SCTP_STATE_SHUTDOWN_SENT */ \
0370     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0371     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0372     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0373     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0374     TYPE_SCTP_FUNC(sctp_sf_do_4_C), \
0375 } /* TYPE_SCTP_SHUTDOWN_COMPLETE */
0376 
0377 /* The primary index for this table is the chunk type.
0378  * The secondary index for this table is the state.
0379  *
0380  * For base protocol (RFC 2960).
0381  */
0382 static const struct sctp_sm_table_entry
0383 chunk_event_table[SCTP_NUM_BASE_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
0384     TYPE_SCTP_DATA,
0385     TYPE_SCTP_INIT,
0386     TYPE_SCTP_INIT_ACK,
0387     TYPE_SCTP_SACK,
0388     TYPE_SCTP_HEARTBEAT,
0389     TYPE_SCTP_HEARTBEAT_ACK,
0390     TYPE_SCTP_ABORT,
0391     TYPE_SCTP_SHUTDOWN,
0392     TYPE_SCTP_SHUTDOWN_ACK,
0393     TYPE_SCTP_ERROR,
0394     TYPE_SCTP_COOKIE_ECHO,
0395     TYPE_SCTP_COOKIE_ACK,
0396     TYPE_SCTP_ECN_ECNE,
0397     TYPE_SCTP_ECN_CWR,
0398     TYPE_SCTP_SHUTDOWN_COMPLETE,
0399 }; /* state_fn_t chunk_event_table[][] */
0400 
0401 #define TYPE_SCTP_ASCONF { \
0402     /* SCTP_STATE_CLOSED */ \
0403     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0404     /* SCTP_STATE_COOKIE_WAIT */ \
0405     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0406     /* SCTP_STATE_COOKIE_ECHOED */ \
0407     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0408     /* SCTP_STATE_ESTABLISHED */ \
0409     TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
0410     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0411     TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
0412     /* SCTP_STATE_SHUTDOWN_SENT */ \
0413     TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
0414     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0415     TYPE_SCTP_FUNC(sctp_sf_do_asconf), \
0416     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0417     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0418 } /* TYPE_SCTP_ASCONF */
0419 
0420 #define TYPE_SCTP_ASCONF_ACK { \
0421     /* SCTP_STATE_CLOSED */ \
0422     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0423     /* SCTP_STATE_COOKIE_WAIT */ \
0424     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0425     /* SCTP_STATE_COOKIE_ECHOED */ \
0426     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0427     /* SCTP_STATE_ESTABLISHED */ \
0428     TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
0429     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0430     TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
0431     /* SCTP_STATE_SHUTDOWN_SENT */ \
0432     TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
0433     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0434     TYPE_SCTP_FUNC(sctp_sf_do_asconf_ack), \
0435     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0436     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0437 } /* TYPE_SCTP_ASCONF_ACK */
0438 
0439 /* The primary index for this table is the chunk type.
0440  * The secondary index for this table is the state.
0441  */
0442 static const struct sctp_sm_table_entry
0443 addip_chunk_event_table[SCTP_NUM_ADDIP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
0444     TYPE_SCTP_ASCONF,
0445     TYPE_SCTP_ASCONF_ACK,
0446 }; /*state_fn_t addip_chunk_event_table[][] */
0447 
0448 #define TYPE_SCTP_FWD_TSN { \
0449     /* SCTP_STATE_CLOSED */ \
0450     TYPE_SCTP_FUNC(sctp_sf_ootb), \
0451     /* SCTP_STATE_COOKIE_WAIT */ \
0452     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0453     /* SCTP_STATE_COOKIE_ECHOED */ \
0454     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0455     /* SCTP_STATE_ESTABLISHED */ \
0456     TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
0457     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0458     TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn), \
0459     /* SCTP_STATE_SHUTDOWN_SENT */ \
0460     TYPE_SCTP_FUNC(sctp_sf_eat_fwd_tsn_fast), \
0461     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0462     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0463     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0464     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0465 } /* TYPE_SCTP_FWD_TSN */
0466 
0467 /* The primary index for this table is the chunk type.
0468  * The secondary index for this table is the state.
0469  */
0470 static const struct sctp_sm_table_entry
0471 prsctp_chunk_event_table[SCTP_NUM_PRSCTP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
0472     TYPE_SCTP_FWD_TSN,
0473 }; /*state_fn_t prsctp_chunk_event_table[][] */
0474 
0475 #define TYPE_SCTP_RECONF { \
0476     /* SCTP_STATE_CLOSED */ \
0477     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0478     /* SCTP_STATE_COOKIE_WAIT */ \
0479     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0480     /* SCTP_STATE_COOKIE_ECHOED */ \
0481     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0482     /* SCTP_STATE_ESTABLISHED */ \
0483     TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
0484     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0485     TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
0486     /* SCTP_STATE_SHUTDOWN_SENT */ \
0487     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0488     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0489     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0490     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0491     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0492 } /* TYPE_SCTP_RECONF */
0493 
0494 /* The primary index for this table is the chunk type.
0495  * The secondary index for this table is the state.
0496  */
0497 static const struct sctp_sm_table_entry
0498 reconf_chunk_event_table[SCTP_NUM_RECONF_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
0499     TYPE_SCTP_RECONF,
0500 }; /*state_fn_t reconf_chunk_event_table[][] */
0501 
0502 #define TYPE_SCTP_AUTH { \
0503     /* SCTP_STATE_CLOSED */ \
0504     TYPE_SCTP_FUNC(sctp_sf_ootb), \
0505     /* SCTP_STATE_COOKIE_WAIT */ \
0506     TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
0507     /* SCTP_STATE_COOKIE_ECHOED */ \
0508     TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
0509     /* SCTP_STATE_ESTABLISHED */ \
0510     TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
0511     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0512     TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
0513     /* SCTP_STATE_SHUTDOWN_SENT */ \
0514     TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
0515     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0516     TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
0517     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0518     TYPE_SCTP_FUNC(sctp_sf_eat_auth), \
0519 } /* TYPE_SCTP_AUTH */
0520 
0521 /* The primary index for this table is the chunk type.
0522  * The secondary index for this table is the state.
0523  */
0524 static const struct sctp_sm_table_entry
0525 auth_chunk_event_table[SCTP_NUM_AUTH_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
0526     TYPE_SCTP_AUTH,
0527 }; /*state_fn_t auth_chunk_event_table[][] */
0528 
0529 static const struct sctp_sm_table_entry
0530 pad_chunk_event_table[SCTP_STATE_NUM_STATES] = {
0531     /* SCTP_STATE_CLOSED */
0532     TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
0533     /* SCTP_STATE_COOKIE_WAIT */
0534     TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
0535     /* SCTP_STATE_COOKIE_ECHOED */
0536     TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
0537     /* SCTP_STATE_ESTABLISHED */
0538     TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
0539     /* SCTP_STATE_SHUTDOWN_PENDING */
0540     TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
0541     /* SCTP_STATE_SHUTDOWN_SENT */
0542     TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
0543     /* SCTP_STATE_SHUTDOWN_RECEIVED */
0544     TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
0545     /* SCTP_STATE_SHUTDOWN_ACK_SENT */
0546     TYPE_SCTP_FUNC(sctp_sf_discard_chunk),
0547 };  /* chunk pad */
0548 
0549 static const struct sctp_sm_table_entry
0550 chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
0551     /* SCTP_STATE_CLOSED */
0552     TYPE_SCTP_FUNC(sctp_sf_ootb),
0553     /* SCTP_STATE_COOKIE_WAIT */
0554     TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
0555     /* SCTP_STATE_COOKIE_ECHOED */
0556     TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
0557     /* SCTP_STATE_ESTABLISHED */
0558     TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
0559     /* SCTP_STATE_SHUTDOWN_PENDING */
0560     TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
0561     /* SCTP_STATE_SHUTDOWN_SENT */
0562     TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
0563     /* SCTP_STATE_SHUTDOWN_RECEIVED */
0564     TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
0565     /* SCTP_STATE_SHUTDOWN_ACK_SENT */
0566     TYPE_SCTP_FUNC(sctp_sf_unk_chunk),
0567 };  /* chunk unknown */
0568 
0569 
0570 #define TYPE_SCTP_PRIMITIVE_ASSOCIATE  { \
0571     /* SCTP_STATE_CLOSED */ \
0572     TYPE_SCTP_FUNC(sctp_sf_do_prm_asoc), \
0573     /* SCTP_STATE_COOKIE_WAIT */ \
0574     TYPE_SCTP_FUNC(sctp_sf_not_impl), \
0575     /* SCTP_STATE_COOKIE_ECHOED */ \
0576     TYPE_SCTP_FUNC(sctp_sf_not_impl), \
0577     /* SCTP_STATE_ESTABLISHED */ \
0578     TYPE_SCTP_FUNC(sctp_sf_not_impl), \
0579     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0580     TYPE_SCTP_FUNC(sctp_sf_not_impl), \
0581     /* SCTP_STATE_SHUTDOWN_SENT */ \
0582     TYPE_SCTP_FUNC(sctp_sf_not_impl), \
0583     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0584     TYPE_SCTP_FUNC(sctp_sf_not_impl), \
0585     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0586     TYPE_SCTP_FUNC(sctp_sf_not_impl), \
0587 } /* TYPE_SCTP_PRIMITIVE_ASSOCIATE */
0588 
0589 #define TYPE_SCTP_PRIMITIVE_SHUTDOWN  { \
0590     /* SCTP_STATE_CLOSED */ \
0591     TYPE_SCTP_FUNC(sctp_sf_error_closed), \
0592     /* SCTP_STATE_COOKIE_WAIT */ \
0593     TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_shutdown), \
0594     /* SCTP_STATE_COOKIE_ECHOED */ \
0595     TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_shutdown),\
0596     /* SCTP_STATE_ESTABLISHED */ \
0597     TYPE_SCTP_FUNC(sctp_sf_do_9_2_prm_shutdown), \
0598     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0599     TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
0600     /* SCTP_STATE_SHUTDOWN_SENT */ \
0601     TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
0602     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0603     TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
0604     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0605     TYPE_SCTP_FUNC(sctp_sf_ignore_primitive), \
0606 } /* TYPE_SCTP_PRIMITIVE_SHUTDOWN */
0607 
0608 #define TYPE_SCTP_PRIMITIVE_ABORT  { \
0609     /* SCTP_STATE_CLOSED */ \
0610     TYPE_SCTP_FUNC(sctp_sf_error_closed), \
0611     /* SCTP_STATE_COOKIE_WAIT */ \
0612     TYPE_SCTP_FUNC(sctp_sf_cookie_wait_prm_abort), \
0613     /* SCTP_STATE_COOKIE_ECHOED */ \
0614     TYPE_SCTP_FUNC(sctp_sf_cookie_echoed_prm_abort), \
0615     /* SCTP_STATE_ESTABLISHED */ \
0616     TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
0617     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0618     TYPE_SCTP_FUNC(sctp_sf_shutdown_pending_prm_abort), \
0619     /* SCTP_STATE_SHUTDOWN_SENT */ \
0620     TYPE_SCTP_FUNC(sctp_sf_shutdown_sent_prm_abort), \
0621     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0622     TYPE_SCTP_FUNC(sctp_sf_do_9_1_prm_abort), \
0623     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0624     TYPE_SCTP_FUNC(sctp_sf_shutdown_ack_sent_prm_abort), \
0625 } /* TYPE_SCTP_PRIMITIVE_ABORT */
0626 
0627 #define TYPE_SCTP_PRIMITIVE_SEND  { \
0628     /* SCTP_STATE_CLOSED */ \
0629     TYPE_SCTP_FUNC(sctp_sf_error_closed), \
0630     /* SCTP_STATE_COOKIE_WAIT */ \
0631     TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
0632     /* SCTP_STATE_COOKIE_ECHOED */ \
0633     TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
0634     /* SCTP_STATE_ESTABLISHED */ \
0635     TYPE_SCTP_FUNC(sctp_sf_do_prm_send), \
0636     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0637     TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
0638     /* SCTP_STATE_SHUTDOWN_SENT */ \
0639     TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
0640     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0641     TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
0642     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0643     TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
0644 } /* TYPE_SCTP_PRIMITIVE_SEND */
0645 
0646 #define TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT  { \
0647     /* SCTP_STATE_CLOSED */ \
0648     TYPE_SCTP_FUNC(sctp_sf_error_closed), \
0649     /* SCTP_STATE_COOKIE_WAIT */ \
0650     TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
0651     /* SCTP_STATE_COOKIE_ECHOED */ \
0652     TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
0653     /* SCTP_STATE_ESTABLISHED */ \
0654     TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
0655     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0656     TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
0657     /* SCTP_STATE_SHUTDOWN_SENT */ \
0658     TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
0659     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0660     TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
0661     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0662     TYPE_SCTP_FUNC(sctp_sf_do_prm_requestheartbeat),          \
0663 } /* TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT */
0664 
0665 #define TYPE_SCTP_PRIMITIVE_ASCONF { \
0666     /* SCTP_STATE_CLOSED */ \
0667     TYPE_SCTP_FUNC(sctp_sf_error_closed), \
0668     /* SCTP_STATE_COOKIE_WAIT */ \
0669     TYPE_SCTP_FUNC(sctp_sf_error_closed), \
0670     /* SCTP_STATE_COOKIE_ECHOED */ \
0671     TYPE_SCTP_FUNC(sctp_sf_error_closed), \
0672     /* SCTP_STATE_ESTABLISHED */ \
0673     TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
0674     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0675     TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
0676     /* SCTP_STATE_SHUTDOWN_SENT */ \
0677     TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
0678     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0679     TYPE_SCTP_FUNC(sctp_sf_do_prm_asconf), \
0680     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0681     TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
0682 } /* TYPE_SCTP_PRIMITIVE_ASCONF */
0683 
0684 #define TYPE_SCTP_PRIMITIVE_RECONF { \
0685     /* SCTP_STATE_CLOSED */ \
0686     TYPE_SCTP_FUNC(sctp_sf_error_closed), \
0687     /* SCTP_STATE_COOKIE_WAIT */ \
0688     TYPE_SCTP_FUNC(sctp_sf_error_closed), \
0689     /* SCTP_STATE_COOKIE_ECHOED */ \
0690     TYPE_SCTP_FUNC(sctp_sf_error_closed), \
0691     /* SCTP_STATE_ESTABLISHED */ \
0692     TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
0693     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0694     TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
0695     /* SCTP_STATE_SHUTDOWN_SENT */ \
0696     TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
0697     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0698     TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
0699     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0700     TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
0701 } /* TYPE_SCTP_PRIMITIVE_RECONF */
0702 
0703 /* The primary index for this table is the primitive type.
0704  * The secondary index for this table is the state.
0705  */
0706 static const struct sctp_sm_table_entry
0707 primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP_STATE_NUM_STATES] = {
0708     TYPE_SCTP_PRIMITIVE_ASSOCIATE,
0709     TYPE_SCTP_PRIMITIVE_SHUTDOWN,
0710     TYPE_SCTP_PRIMITIVE_ABORT,
0711     TYPE_SCTP_PRIMITIVE_SEND,
0712     TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT,
0713     TYPE_SCTP_PRIMITIVE_ASCONF,
0714     TYPE_SCTP_PRIMITIVE_RECONF,
0715 };
0716 
0717 #define TYPE_SCTP_OTHER_NO_PENDING_TSN  { \
0718     /* SCTP_STATE_CLOSED */ \
0719     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0720     /* SCTP_STATE_COOKIE_WAIT */ \
0721     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0722     /* SCTP_STATE_COOKIE_ECHOED */ \
0723     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0724     /* SCTP_STATE_ESTABLISHED */ \
0725     TYPE_SCTP_FUNC(sctp_sf_do_no_pending_tsn), \
0726     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0727     TYPE_SCTP_FUNC(sctp_sf_do_9_2_start_shutdown), \
0728     /* SCTP_STATE_SHUTDOWN_SENT */ \
0729     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0730     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0731     TYPE_SCTP_FUNC(sctp_sf_do_9_2_shutdown_ack), \
0732     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0733     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0734 }
0735 
0736 #define TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH  { \
0737     /* SCTP_STATE_CLOSED */ \
0738     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0739     /* SCTP_STATE_COOKIE_WAIT */ \
0740     TYPE_SCTP_FUNC(sctp_sf_cookie_wait_icmp_abort), \
0741     /* SCTP_STATE_COOKIE_ECHOED */ \
0742     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0743     /* SCTP_STATE_ESTABLISHED */ \
0744     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0745     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0746     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0747     /* SCTP_STATE_SHUTDOWN_SENT */ \
0748     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0749     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0750     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0751     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0752     TYPE_SCTP_FUNC(sctp_sf_ignore_other), \
0753 }
0754 
0755 static const struct sctp_sm_table_entry
0756 other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES] = {
0757     TYPE_SCTP_OTHER_NO_PENDING_TSN,
0758     TYPE_SCTP_OTHER_ICMP_PROTO_UNREACH,
0759 };
0760 
0761 #define TYPE_SCTP_EVENT_TIMEOUT_NONE { \
0762     /* SCTP_STATE_CLOSED */ \
0763     TYPE_SCTP_FUNC(sctp_sf_bug), \
0764     /* SCTP_STATE_COOKIE_WAIT */ \
0765     TYPE_SCTP_FUNC(sctp_sf_bug), \
0766     /* SCTP_STATE_COOKIE_ECHOED */ \
0767     TYPE_SCTP_FUNC(sctp_sf_bug), \
0768     /* SCTP_STATE_ESTABLISHED */ \
0769     TYPE_SCTP_FUNC(sctp_sf_bug), \
0770     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0771     TYPE_SCTP_FUNC(sctp_sf_bug), \
0772     /* SCTP_STATE_SHUTDOWN_SENT */ \
0773     TYPE_SCTP_FUNC(sctp_sf_bug), \
0774     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0775     TYPE_SCTP_FUNC(sctp_sf_bug), \
0776     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0777     TYPE_SCTP_FUNC(sctp_sf_bug), \
0778 }
0779 
0780 #define TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE { \
0781     /* SCTP_STATE_CLOSED */ \
0782     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0783     /* SCTP_STATE_COOKIE_WAIT */ \
0784     TYPE_SCTP_FUNC(sctp_sf_bug), \
0785     /* SCTP_STATE_COOKIE_ECHOED */ \
0786     TYPE_SCTP_FUNC(sctp_sf_t1_cookie_timer_expire), \
0787     /* SCTP_STATE_ESTABLISHED */ \
0788     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0789     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0790     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0791     /* SCTP_STATE_SHUTDOWN_SENT */ \
0792     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0793     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0794     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0795     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0796     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0797 }
0798 
0799 #define TYPE_SCTP_EVENT_TIMEOUT_T1_INIT { \
0800     /* SCTP_STATE_CLOSED */ \
0801     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0802     /* SCTP_STATE_COOKIE_WAIT */ \
0803     TYPE_SCTP_FUNC(sctp_sf_t1_init_timer_expire), \
0804     /* SCTP_STATE_COOKIE_ECHOED */ \
0805     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0806     /* SCTP_STATE_ESTABLISHED */ \
0807     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0808     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0809     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0810     /* SCTP_STATE_SHUTDOWN_SENT */ \
0811     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0812     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0813     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0814     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0815     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0816 }
0817 
0818 #define TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN { \
0819     /* SCTP_STATE_CLOSED */ \
0820     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0821     /* SCTP_STATE_COOKIE_WAIT */ \
0822     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0823     /* SCTP_STATE_COOKIE_ECHOED */ \
0824     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0825     /* SCTP_STATE_ESTABLISHED */ \
0826     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0827     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0828     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0829     /* SCTP_STATE_SHUTDOWN_SENT */ \
0830     TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
0831     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0832     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0833     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0834     TYPE_SCTP_FUNC(sctp_sf_t2_timer_expire), \
0835 }
0836 
0837 #define TYPE_SCTP_EVENT_TIMEOUT_T3_RTX { \
0838     /* SCTP_STATE_CLOSED */ \
0839     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0840     /* SCTP_STATE_COOKIE_WAIT */ \
0841     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0842     /* SCTP_STATE_COOKIE_ECHOED */ \
0843     TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
0844     /* SCTP_STATE_ESTABLISHED */ \
0845     TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
0846     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0847     TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
0848     /* SCTP_STATE_SHUTDOWN_SENT */ \
0849     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0850     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0851     TYPE_SCTP_FUNC(sctp_sf_do_6_3_3_rtx), \
0852     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0853     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0854 }
0855 
0856 #define TYPE_SCTP_EVENT_TIMEOUT_T4_RTO { \
0857     /* SCTP_STATE_CLOSED */ \
0858     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0859     /* SCTP_STATE_COOKIE_WAIT */ \
0860     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0861     /* SCTP_STATE_COOKIE_ECHOED */ \
0862     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0863     /* SCTP_STATE_ESTABLISHED */ \
0864     TYPE_SCTP_FUNC(sctp_sf_t4_timer_expire), \
0865     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0866     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0867     /* SCTP_STATE_SHUTDOWN_SENT */ \
0868     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0869     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0870     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0871     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0872     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0873 }
0874 
0875 #define TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD { \
0876     /* SCTP_STATE_CLOSED */ \
0877     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0878     /* SCTP_STATE_COOKIE_WAIT */ \
0879     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0880     /* SCTP_STATE_COOKIE_ECHOED */ \
0881     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0882     /* SCTP_STATE_ESTABLISHED */ \
0883     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0884     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0885     TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
0886     /* SCTP_STATE_SHUTDOWN_SENT */ \
0887     TYPE_SCTP_FUNC(sctp_sf_t5_timer_expire), \
0888     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0889     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0890     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0891     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0892 }
0893 
0894 #define TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT { \
0895     /* SCTP_STATE_CLOSED */ \
0896     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0897     /* SCTP_STATE_COOKIE_WAIT */ \
0898     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0899     /* SCTP_STATE_COOKIE_ECHOED */ \
0900     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0901     /* SCTP_STATE_ESTABLISHED */ \
0902     TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
0903     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0904     TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
0905     /* SCTP_STATE_SHUTDOWN_SENT */ \
0906     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0907     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0908     TYPE_SCTP_FUNC(sctp_sf_sendbeat_8_3), \
0909     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0910     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0911 }
0912 
0913 #define TYPE_SCTP_EVENT_TIMEOUT_SACK { \
0914     /* SCTP_STATE_CLOSED */ \
0915     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0916     /* SCTP_STATE_COOKIE_WAIT */ \
0917     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0918     /* SCTP_STATE_COOKIE_ECHOED */ \
0919     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0920     /* SCTP_STATE_ESTABLISHED */ \
0921     TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
0922     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0923     TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
0924     /* SCTP_STATE_SHUTDOWN_SENT */ \
0925     TYPE_SCTP_FUNC(sctp_sf_do_6_2_sack), \
0926     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0927     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0928     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0929     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0930 }
0931 
0932 #define TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE { \
0933     /* SCTP_STATE_CLOSED */ \
0934     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0935     /* SCTP_STATE_COOKIE_WAIT */ \
0936     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0937     /* SCTP_STATE_COOKIE_ECHOED */ \
0938     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0939     /* SCTP_STATE_ESTABLISHED */ \
0940     TYPE_SCTP_FUNC(sctp_sf_autoclose_timer_expire), \
0941     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0942     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0943     /* SCTP_STATE_SHUTDOWN_SENT */ \
0944     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0945     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0946     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0947     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0948     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0949 }
0950 
0951 #define TYPE_SCTP_EVENT_TIMEOUT_RECONF { \
0952     /* SCTP_STATE_CLOSED */ \
0953     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0954     /* SCTP_STATE_COOKIE_WAIT */ \
0955     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0956     /* SCTP_STATE_COOKIE_ECHOED */ \
0957     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0958     /* SCTP_STATE_ESTABLISHED */ \
0959     TYPE_SCTP_FUNC(sctp_sf_send_reconf), \
0960     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0961     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0962     /* SCTP_STATE_SHUTDOWN_SENT */ \
0963     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0964     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0965     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0966     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0967     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0968 }
0969 
0970 #define TYPE_SCTP_EVENT_TIMEOUT_PROBE { \
0971     /* SCTP_STATE_CLOSED */ \
0972     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0973     /* SCTP_STATE_COOKIE_WAIT */ \
0974     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0975     /* SCTP_STATE_COOKIE_ECHOED */ \
0976     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0977     /* SCTP_STATE_ESTABLISHED */ \
0978     TYPE_SCTP_FUNC(sctp_sf_send_probe), \
0979     /* SCTP_STATE_SHUTDOWN_PENDING */ \
0980     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0981     /* SCTP_STATE_SHUTDOWN_SENT */ \
0982     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0983     /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
0984     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0985     /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
0986     TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
0987 }
0988 
0989 static const struct sctp_sm_table_entry
0990 timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES] = {
0991     TYPE_SCTP_EVENT_TIMEOUT_NONE,
0992     TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE,
0993     TYPE_SCTP_EVENT_TIMEOUT_T1_INIT,
0994     TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN,
0995     TYPE_SCTP_EVENT_TIMEOUT_T3_RTX,
0996     TYPE_SCTP_EVENT_TIMEOUT_T4_RTO,
0997     TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD,
0998     TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT,
0999     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 }
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