net/sctp/debug.c

   1 /* SCTP kernel reference 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  *
   7  * This file is part of the SCTP kernel reference Implementation
   8  *
   9  * This file is part of the implementation of the add-IP extension,
  10  * based on <draft-ietf-tsvwg-addip-sctp-02.txt> June 29, 2001,
  11  * for the SCTP kernel reference Implementation.
  12  *
  13  * This file converts numerical ID value to alphabetical names for SCTP
  14  * terms such as chunk type, parameter time, event type, etc.
  15  *
  16  * The SCTP reference implementation is free software;
  17  * you can redistribute it and/or modify it under the terms of
  18  * the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2, or (at your option)
  20  * any later version.
  21  *
  22  * The SCTP reference implementation is distributed in the hope that it
  23  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  24  *                 ************************
  25  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  26  * See the GNU General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License
  29  * along with GNU CC; see the file COPYING.  If not, write to
  30  * the Free Software Foundation, 59 Temple Place - Suite 330,
  31  * Boston, MA 02111-1307, USA.
  32  *
  33  * Please send any bug reports or fixes you make to the
  34  * email address(es):
  35  *    lksctp developers <lksctp-developers@lists.sourceforge.net>
  36  *
  37  * Or submit a bug report through the following website:
  38  *    http://www.sf.net/projects/lksctp
  39  *
  40  * Written or modified by:
  41  *    La Monte H.P. Yarroll <piggy@acm.org>
  42  *    Karl Knutson          <karl@athena.chicago.il.us>
  43  *    Xingang Guo           <xingang.guo@intel.com>
  44  *    Jon Grimm             <jgrimm@us.ibm.com>
  45  *    Daisy Chang           <daisyc@us.ibm.com>
  46  *    Sridhar Samudrala     <sri@us.ibm.com>
  47  *
  48  * Any bugs reported given to us we will try to fix... any fixes shared will
  49  * be incorporated into the next SCTP release.
  50  */
  51
  52 #include <net/sctp/sctp.h>
  53
  54 #if SCTP_DEBUG
  55 int sctp_debug_flag = 1;        /* Initially enable DEBUG */
  56 #endif  /* SCTP_DEBUG */
  57
  58 /* These are printable forms of Chunk ID's from section 3.1.  */
  59 static const char *sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = {
  60         "DATA",
  61         "INIT",
  62         "INIT_ACK",
  63         "SACK",
  64         "HEARTBEAT",
  65         "HEARTBEAT_ACK",
  66         "ABORT",
  67         "SHUTDOWN",
  68         "SHUTDOWN_ACK",
  69         "ERROR",
  70         "COOKIE_ECHO",
  71         "COOKIE_ACK",
  72         "ECN_ECNE",
  73         "ECN_CWR",
  74         "SHUTDOWN_COMPLETE",
  75 };
  76
  77 /* Lookup "chunk type" debug name. */
  78 const char *sctp_cname(const sctp_subtype_t cid)
  79 {
  80         if (cid.chunk < 0)
  81                 return "illegal chunk id";
  82         if (cid.chunk <= SCTP_CID_BASE_MAX)
  83                 return sctp_cid_tbl[cid.chunk];
  84
  85         switch (cid.chunk) {
  86         case SCTP_CID_ASCONF:
  87                 return "ASCONF";
  88
  89         case SCTP_CID_ASCONF_ACK:
  90                 return "ASCONF_ACK";
  91
  92         case SCTP_CID_FWD_TSN:
  93                 return "FWD_TSN";
  94
  95         default:
  96                 return "unknown chunk";
  97         };
  98         return "unknown chunk";
  99 }
 100
 101 /* These are printable forms of the states.  */
 102 const char *sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
 103         "STATE_EMPTY",
 104         "STATE_CLOSED",
 105         "STATE_COOKIE_WAIT",
 106         "STATE_COOKIE_ECHOED",
 107         "STATE_ESTABLISHED",
 108         "STATE_SHUTDOWN_PENDING",
 109         "STATE_SHUTDOWN_SENT",
 110         "STATE_SHUTDOWN_RECEIVED",
 111         "STATE_SHUTDOWN_ACK_SENT",
 112 };
 113
 114 /* Events that could change the state of an association.  */
 115 const char *sctp_evttype_tbl[] = {
 116         "EVENT_T_unknown",
 117         "EVENT_T_CHUNK",
 118         "EVENT_T_TIMEOUT",
 119         "EVENT_T_OTHER",
 120         "EVENT_T_PRIMITIVE"
 121 };
 122
 123 /* Return value of a state function */
 124 const char *sctp_status_tbl[] = {
 125         "DISPOSITION_DISCARD",
 126         "DISPOSITION_CONSUME",
 127         "DISPOSITION_NOMEM",
 128         "DISPOSITION_DELETE_TCB",
 129         "DISPOSITION_ABORT",
 130         "DISPOSITION_VIOLATION",
 131         "DISPOSITION_NOT_IMPL",
 132         "DISPOSITION_ERROR",
 133         "DISPOSITION_BUG"
 134 };
 135
 136 /* Printable forms of primitives */
 137 static const char *sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {
 138         "PRIMITIVE_ASSOCIATE",
 139         "PRIMITIVE_SHUTDOWN",
 140         "PRIMITIVE_ABORT",
 141         "PRIMITIVE_SEND",
 142         "PRIMITIVE_REQUESTHEARTBEAT",
 143 };
 144
 145 /* Lookup primitive debug name. */
 146 const char *sctp_pname(const sctp_subtype_t id)
 147 {
 148         if (id.primitive < 0)
 149                 return "illegal primitive";
 150         if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX)
 151                 return sctp_primitive_tbl[id.primitive];
 152         return "unknown_primitive";
 153 }
 154
 155 static const char *sctp_other_tbl[] = {
 156         "NO_PENDING_TSN",
 157         "ICMP_PROTO_UNREACH",
 158 };
 159
 160 /* Lookup "other" debug name. */
 161 const char *sctp_oname(const sctp_subtype_t id)
 162 {
 163         if (id.other < 0)
 164                 return "illegal 'other' event";
 165         if (id.other <= SCTP_EVENT_OTHER_MAX)
 166                 return sctp_other_tbl[id.other];
 167         return "unknown 'other' event";
 168 }
 169
 170 static const char *sctp_timer_tbl[] = {
 171         "TIMEOUT_NONE",
 172         "TIMEOUT_T1_COOKIE",
 173         "TIMEOUT_T1_INIT",
 174         "TIMEOUT_T2_SHUTDOWN",
 175         "TIMEOUT_T3_RTX",
 176         "TIMEOUT_T4_RTO",
 177         "TIMEOUT_T5_SHUTDOWN_GUARD",
 178         "TIMEOUT_HEARTBEAT",
 179         "TIMEOUT_SACK",
 180         "TIMEOUT_AUTOCLOSE",
 181 };
 182
 183 /* Lookup timer debug name. */
 184 const char *sctp_tname(const sctp_subtype_t id)
 185 {
 186         if (id.timeout < 0)
 187                 return "illegal 'timer' event";
 188         if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX)
 189                 return sctp_timer_tbl[id.timeout];
 190         return "unknown_timer";
 191 }