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 <[email protected]>
  32  *
  33  * Written or modified by:
  34  *    La Monte H.P. Yarroll <[email protected]>
  35  *    Karl Knutson          <[email protected]>
  36  *    Xingang Guo           <[email protected]>
  37  *    Jon Grimm             <[email protected]>
  38  *    Daisy Chang           <[email protected]>
  39  *    Sridhar Samudrala     <[email protected]>
  40  */
  41
  42 #include <net/sctp/sctp.h>
  43
  44 /* These are printable forms of Chunk ID's from section 3.1.  */
  45 static const char *const sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = {
  46         "DATA",
  47         "INIT",
  48         "INIT_ACK",
  49         "SACK",
  50         "HEARTBEAT",
  51         "HEARTBEAT_ACK",
  52         "ABORT",
  53         "SHUTDOWN",
  54         "SHUTDOWN_ACK",
  55         "ERROR",
  56         "COOKIE_ECHO",
  57         "COOKIE_ACK",
  58         "ECN_ECNE",
  59         "ECN_CWR",
  60         "SHUTDOWN_COMPLETE",
  61 };
  62
  63 /* Lookup "chunk type" debug name. */
  64 const char *sctp_cname(const sctp_subtype_t cid)
  65 {
  66         if (cid.chunk <= SCTP_CID_BASE_MAX)
  67                 return sctp_cid_tbl[cid.chunk];
  68
  69         switch (cid.chunk) {
  70         case SCTP_CID_ASCONF:
  71                 return "ASCONF";
  72
  73         case SCTP_CID_ASCONF_ACK:
  74                 return "ASCONF_ACK";
  75
  76         case SCTP_CID_FWD_TSN:
  77                 return "FWD_TSN";
  78
  79         case SCTP_CID_AUTH:
  80                 return "AUTH";
  81
  82         default:
  83                 break;
  84         }
  85
  86         return "unknown chunk";
  87 }
  88
  89 /* These are printable forms of the states.  */
  90 const char *const sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
  91         "STATE_CLOSED",
  92         "STATE_COOKIE_WAIT",
  93         "STATE_COOKIE_ECHOED",
  94         "STATE_ESTABLISHED",
  95         "STATE_SHUTDOWN_PENDING",
  96         "STATE_SHUTDOWN_SENT",
  97         "STATE_SHUTDOWN_RECEIVED",
  98         "STATE_SHUTDOWN_ACK_SENT",
  99 };
 100
 101 /* Events that could change the state of an association.  */
 102 const char *const sctp_evttype_tbl[] = {
 103         "EVENT_T_unknown",
 104         "EVENT_T_CHUNK",
 105         "EVENT_T_TIMEOUT",
 106         "EVENT_T_OTHER",
 107         "EVENT_T_PRIMITIVE"
 108 };
 109
 110 /* Return value of a state function */
 111 const char *const sctp_status_tbl[] = {
 112         "DISPOSITION_DISCARD",
 113         "DISPOSITION_CONSUME",
 114         "DISPOSITION_NOMEM",
 115         "DISPOSITION_DELETE_TCB",
 116         "DISPOSITION_ABORT",
 117         "DISPOSITION_VIOLATION",
 118         "DISPOSITION_NOT_IMPL",
 119         "DISPOSITION_ERROR",
 120         "DISPOSITION_BUG"
 121 };
 122
 123 /* Printable forms of primitives */
 124 static const char *const sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {
 125         "PRIMITIVE_ASSOCIATE",
 126         "PRIMITIVE_SHUTDOWN",
 127         "PRIMITIVE_ABORT",
 128         "PRIMITIVE_SEND",
 129         "PRIMITIVE_REQUESTHEARTBEAT",
 130         "PRIMITIVE_ASCONF",
 131 };
 132
 133 /* Lookup primitive debug name. */
 134 const char *sctp_pname(const sctp_subtype_t id)
 135 {
 136         if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX)
 137                 return sctp_primitive_tbl[id.primitive];
 138         return "unknown_primitive";
 139 }
 140
 141 static const char *const sctp_other_tbl[] = {
 142         "NO_PENDING_TSN",
 143         "ICMP_PROTO_UNREACH",
 144 };
 145
 146 /* Lookup "other" debug name. */
 147 const char *sctp_oname(const sctp_subtype_t id)
 148 {
 149         if (id.other <= SCTP_EVENT_OTHER_MAX)
 150                 return sctp_other_tbl[id.other];
 151         return "unknown 'other' event";
 152 }
 153
 154 static const char *const sctp_timer_tbl[] = {
 155         "TIMEOUT_NONE",
 156         "TIMEOUT_T1_COOKIE",
 157         "TIMEOUT_T1_INIT",
 158         "TIMEOUT_T2_SHUTDOWN",
 159         "TIMEOUT_T3_RTX",
 160         "TIMEOUT_T4_RTO",
 161         "TIMEOUT_T5_SHUTDOWN_GUARD",
 162         "TIMEOUT_HEARTBEAT",
 163         "TIMEOUT_SACK",
 164         "TIMEOUT_AUTOCLOSE",
 165 };
 166
 167 /* Lookup timer debug name. */
 168 const char *sctp_tname(const sctp_subtype_t id)
 169 {
 170         if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX)
 171                 return sctp_timer_tbl[id.timeout];
 172         return "unknown_timer";
 173 }