LXR linux/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
  55int 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.  */
  59static 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. */
  78const char *sctp_cname(const sctp_subtype_t cid)
  79{
  80        if (cid.chunk <= SCTP_CID_BASE_MAX)
  81                return sctp_cid_tbl[cid.chunk];
  82
  83        switch (cid.chunk) {
  84        case SCTP_CID_ASCONF:
  85                return "ASCONF";
  86
  87        case SCTP_CID_ASCONF_ACK:
  88                return "ASCONF_ACK";
  89
  90        case SCTP_CID_FWD_TSN:
  91                return "FWD_TSN";
  92
  93        default:
  94                break;
  95        }
  96
  97        return "unknown chunk";
  98}
  99
 100/* These are printable forms of the states.  */
 101const char *sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
 102        "STATE_EMPTY",
 103        "STATE_CLOSED",
 104        "STATE_COOKIE_WAIT",
 105        "STATE_COOKIE_ECHOED",
 106        "STATE_ESTABLISHED",
 107        "STATE_SHUTDOWN_PENDING",
 108        "STATE_SHUTDOWN_SENT",
 109        "STATE_SHUTDOWN_RECEIVED",
 110        "STATE_SHUTDOWN_ACK_SENT",
 111};
 112
 113/* Events that could change the state of an association.  */
 114const char *sctp_evttype_tbl[] = {
 115        "EVENT_T_unknown",
 116        "EVENT_T_CHUNK",
 117        "EVENT_T_TIMEOUT",
 118        "EVENT_T_OTHER",
 119        "EVENT_T_PRIMITIVE"
 120};
 121
 122/* Return value of a state function */
 123const char *sctp_status_tbl[] = {
 124        "DISPOSITION_DISCARD",
 125        "DISPOSITION_CONSUME",
 126        "DISPOSITION_NOMEM",
 127        "DISPOSITION_DELETE_TCB",
 128        "DISPOSITION_ABORT",
 129        "DISPOSITION_VIOLATION",
 130        "DISPOSITION_NOT_IMPL",
 131        "DISPOSITION_ERROR",
 132        "DISPOSITION_BUG"
 133};
 134
 135/* Printable forms of primitives */
 136static const char *sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {
 137        "PRIMITIVE_ASSOCIATE",
 138        "PRIMITIVE_SHUTDOWN",
 139        "PRIMITIVE_ABORT",
 140        "PRIMITIVE_SEND",
 141        "PRIMITIVE_REQUESTHEARTBEAT",
 142};
 143
 144/* Lookup primitive debug name. */
 145const char *sctp_pname(const sctp_subtype_t id)
 146{
 147        if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX)
 148                return sctp_primitive_tbl[id.primitive];
 149        return "unknown_primitive";
 150}
 151
 152static const char *sctp_other_tbl[] = {
 153        "NO_PENDING_TSN",
 154        "ICMP_PROTO_UNREACH",
 155};
 156
 157/* Lookup "other" debug name. */
 158const char *sctp_oname(const sctp_subtype_t id)
 159{
 160        if (id.other <= SCTP_EVENT_OTHER_MAX)
 161                return sctp_other_tbl[id.other];
 162        return "unknown 'other' event";
 163}
 164
 165static const char *sctp_timer_tbl[] = {
 166        "TIMEOUT_NONE",
 167        "TIMEOUT_T1_COOKIE",
 168        "TIMEOUT_T1_INIT",
 169        "TIMEOUT_T2_SHUTDOWN",
 170        "TIMEOUT_T3_RTX",
 171        "TIMEOUT_T4_RTO",
 172        "TIMEOUT_T5_SHUTDOWN_GUARD",
 173        "TIMEOUT_HEARTBEAT",
 174        "TIMEOUT_SACK",
 175        "TIMEOUT_AUTOCLOSE",
 176};
 177
 178/* Lookup timer debug name. */
 179const char *sctp_tname(const sctp_subtype_t id)
 180{
 181        if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX)
 182                return sctp_timer_tbl[id.timeout];
 183        return "unknown_timer";
 184}
 185