net/sctp/debug.c

   1 /* SCTP kernel implementation
   2  * (C) Copyright IBM Corp. 2001, 2004
   3  * Copyright (c) 1999-2000 Cisco, Inc.
   4  * Copyright (c) 1999-2001 Motorola, Inc.
   5  * Copyright (c) 2001 Intel Corp.
   6  *
   7  * This file is part of the SCTP kernel implementation
   8  *
   9  * This file converts numerical ID value to alphabetical names for SCTP
  10  * terms such as chunk type, parameter time, event type, etc.
  11  *
  12  * This SCTP implementation is free software;
  13  * you can redistribute it and/or modify it under the terms of
  14  * the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2, or (at your option)
  16  * any later version.
  17  *
  18  * This SCTP implementation is distributed in the hope that it
  19  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  20  *                 ************************
  21  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  22  * See the GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with GNU CC; see the file COPYING.  If not, write to
  26  * the Free Software Foundation, 59 Temple Place - Suite 330,
  27  * Boston, MA 02111-1307, USA.
  28  *
  29  * Please send any bug reports or fixes you make to the
  30  * email address(es):
  31  *    lksctp developers <lksctp-developers@lists.sourceforge.net>
  32  *
  33  * Or submit a bug report through the following website:
  34  *    http://www.sf.net/projects/lksctp
  35  *
  36  * Written or modified by:
  37  *    La Monte H.P. Yarroll <piggy@acm.org>
  38  *    Karl Knutson          <karl@athena.chicago.il.us>
  39  *    Xingang Guo           <xingang.guo@intel.com>
  40  *    Jon Grimm             <jgrimm@us.ibm.com>
  41  *    Daisy Chang           <daisyc@us.ibm.com>
  42  *    Sridhar Samudrala     <sri@us.ibm.com>
  43  *
  44  * Any bugs reported given to us we will try to fix... any fixes shared will
  45  * be incorporated into the next SCTP release.
  46  */
  47
  48 #include <net/sctp/sctp.h>
  49
  50 #if SCTP_DEBUG
  51 int sctp_debug_flag = 1;        /* Initially enable DEBUG */
  52 #endif  /* SCTP_DEBUG */
  53
  54 /* These are printable forms of Chunk ID's from section 3.1.  */
  55 static const char *const sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = {
  56         "DATA",
  57         "INIT",
  58         "INIT_ACK",
  59         "SACK",
  60         "HEARTBEAT",
  61         "HEARTBEAT_ACK",
  62         "ABORT",
  63         "SHUTDOWN",
  64         "SHUTDOWN_ACK",
  65         "ERROR",
  66         "COOKIE_ECHO",
  67         "COOKIE_ACK",
  68         "ECN_ECNE",
  69         "ECN_CWR",
  70         "SHUTDOWN_COMPLETE",
  71 };
  72
  73 /* Lookup "chunk type" debug name. */
  74 const char *sctp_cname(const sctp_subtype_t cid)
  75 {
  76         if (cid.chunk <= SCTP_CID_BASE_MAX)
  77                 return sctp_cid_tbl[cid.chunk];
  78
  79         switch (cid.chunk) {
  80         case SCTP_CID_ASCONF:
  81                 return "ASCONF";
  82
  83         case SCTP_CID_ASCONF_ACK:
  84                 return "ASCONF_ACK";
  85
  86         case SCTP_CID_FWD_TSN:
  87                 return "FWD_TSN";
  88
  89         case SCTP_CID_AUTH:
  90                 return "AUTH";
  91
  92         default:
  93                 break;
  94         }
  95
  96         return "unknown chunk";
  97 }
  98
  99 /* These are printable forms of the states.  */
 100 const char *const sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
 101         "STATE_EMPTY",
 102         "STATE_CLOSED",
 103         "STATE_COOKIE_WAIT",
 104         "STATE_COOKIE_ECHOED",
 105         "STATE_ESTABLISHED",
 106         "STATE_SHUTDOWN_PENDING",
 107         "STATE_SHUTDOWN_SENT",
 108         "STATE_SHUTDOWN_RECEIVED",
 109         "STATE_SHUTDOWN_ACK_SENT",
 110 };
 111
 112 /* Events that could change the state of an association.  */
 113 const char *const sctp_evttype_tbl[] = {
 114         "EVENT_T_unknown",
 115         "EVENT_T_CHUNK",
 116         "EVENT_T_TIMEOUT",
 117         "EVENT_T_OTHER",
 118         "EVENT_T_PRIMITIVE"
 119 };
 120
 121 /* Return value of a state function */
 122 const char *const sctp_status_tbl[] = {
 123         "DISPOSITION_DISCARD",
 124         "DISPOSITION_CONSUME",
 125         "DISPOSITION_NOMEM",
 126         "DISPOSITION_DELETE_TCB",
 127         "DISPOSITION_ABORT",
 128         "DISPOSITION_VIOLATION",
 129         "DISPOSITION_NOT_IMPL",
 130         "DISPOSITION_ERROR",
 131         "DISPOSITION_BUG"
 132 };
 133
 134 /* Printable forms of primitives */
 135 static const char *const sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {
 136         "PRIMITIVE_ASSOCIATE",
 137         "PRIMITIVE_SHUTDOWN",
 138         "PRIMITIVE_ABORT",
 139         "PRIMITIVE_SEND",
 140         "PRIMITIVE_REQUESTHEARTBEAT",
 141         "PRIMITIVE_ASCONF",
 142 };
 143
 144 /* Lookup primitive debug name. */
 145 const 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
 152 static const char *const sctp_other_tbl[] = {
 153         "NO_PENDING_TSN",
 154         "ICMP_PROTO_UNREACH",
 155 };
 156
 157 /* Lookup "other" debug name. */
 158 const 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
 165 static const char *const 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. */
 179 const 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 }