1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* SCTP kernel implementation 3 * (C) Copyright IBM Corp. 2001, 2004 4 * Copyright (c) 1999-2000 Cisco, Inc. 5 * Copyright (c) 1999-2001 Motorola, Inc. 6 * Copyright (c) 2001 Intel Corp. 7 * 8 * This file is part of the SCTP kernel implementation 9 * 10 * This file converts numerical ID value to alphabetical names for SCTP 11 * terms such as chunk type, parameter time, event type, etc. 12 * 13 * Please send any bug reports or fixes you make to the 14 * email address(es): 15 * lksctp developers <linux-sctp@vger.kernel.org> 16 * 17 * Written or modified by: 18 * La Monte H.P. Yarroll <piggy@acm.org> 19 * Karl Knutson <karl@athena.chicago.il.us> 20 * Xingang Guo <xingang.guo@intel.com> 21 * Jon Grimm <jgrimm@us.ibm.com> 22 * Daisy Chang <daisyc@us.ibm.com> 23 * Sridhar Samudrala <sri@us.ibm.com> 24 */ 25 26 #include <net/sctp/sctp.h> 27 28 /* These are printable forms of Chunk ID's from section 3.1. */ 29 static const char *const sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = { 30 "DATA", 31 "INIT", 32 "INIT_ACK", 33 "SACK", 34 "HEARTBEAT", 35 "HEARTBEAT_ACK", 36 "ABORT", 37 "SHUTDOWN", 38 "SHUTDOWN_ACK", 39 "ERROR", 40 "COOKIE_ECHO", 41 "COOKIE_ACK", 42 "ECN_ECNE", 43 "ECN_CWR", 44 "SHUTDOWN_COMPLETE", 45 }; 46 47 /* Lookup "chunk type" debug name. */ 48 const char *sctp_cname(const union sctp_subtype cid) 49 { 50 if (cid.chunk <= SCTP_CID_BASE_MAX) 51 return sctp_cid_tbl[cid.chunk]; 52 53 switch (cid.chunk) { 54 case SCTP_CID_ASCONF: 55 return "ASCONF"; 56 57 case SCTP_CID_ASCONF_ACK: 58 return "ASCONF_ACK"; 59 60 case SCTP_CID_FWD_TSN: 61 return "FWD_TSN"; 62 63 case SCTP_CID_AUTH: 64 return "AUTH"; 65 66 case SCTP_CID_RECONF: 67 return "RECONF"; 68 69 case SCTP_CID_I_DATA: 70 return "I_DATA"; 71 72 case SCTP_CID_I_FWD_TSN: 73 return "I_FWD_TSN"; 74 75 default: 76 break; 77 } 78 79 return "unknown chunk"; 80 } 81 82 /* These are printable forms of the states. */ 83 const char *const sctp_state_tbl[SCTP_STATE_NUM_STATES] = { 84 "STATE_CLOSED", 85 "STATE_COOKIE_WAIT", 86 "STATE_COOKIE_ECHOED", 87 "STATE_ESTABLISHED", 88 "STATE_SHUTDOWN_PENDING", 89 "STATE_SHUTDOWN_SENT", 90 "STATE_SHUTDOWN_RECEIVED", 91 "STATE_SHUTDOWN_ACK_SENT", 92 }; 93 94 /* Events that could change the state of an association. */ 95 const char *const sctp_evttype_tbl[] = { 96 "EVENT_T_unknown", 97 "EVENT_T_CHUNK", 98 "EVENT_T_TIMEOUT", 99 "EVENT_T_OTHER", 100 "EVENT_T_PRIMITIVE" 101 }; 102 103 /* Return value of a state function */ 104 const char *const sctp_status_tbl[] = { 105 "DISPOSITION_DISCARD", 106 "DISPOSITION_CONSUME", 107 "DISPOSITION_NOMEM", 108 "DISPOSITION_DELETE_TCB", 109 "DISPOSITION_ABORT", 110 "DISPOSITION_VIOLATION", 111 "DISPOSITION_NOT_IMPL", 112 "DISPOSITION_ERROR", 113 "DISPOSITION_BUG" 114 }; 115 116 /* Printable forms of primitives */ 117 static const char *const sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = { 118 "PRIMITIVE_ASSOCIATE", 119 "PRIMITIVE_SHUTDOWN", 120 "PRIMITIVE_ABORT", 121 "PRIMITIVE_SEND", 122 "PRIMITIVE_REQUESTHEARTBEAT", 123 "PRIMITIVE_ASCONF", 124 }; 125 126 /* Lookup primitive debug name. */ 127 const char *sctp_pname(const union sctp_subtype id) 128 { 129 if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX) 130 return sctp_primitive_tbl[id.primitive]; 131 return "unknown_primitive"; 132 } 133 134 static const char *const sctp_other_tbl[] = { 135 "NO_PENDING_TSN", 136 "ICMP_PROTO_UNREACH", 137 }; 138 139 /* Lookup "other" debug name. */ 140 const char *sctp_oname(const union sctp_subtype id) 141 { 142 if (id.other <= SCTP_EVENT_OTHER_MAX) 143 return sctp_other_tbl[id.other]; 144 return "unknown 'other' event"; 145 } 146 147 static const char *const sctp_timer_tbl[] = { 148 "TIMEOUT_NONE", 149 "TIMEOUT_T1_COOKIE", 150 "TIMEOUT_T1_INIT", 151 "TIMEOUT_T2_SHUTDOWN", 152 "TIMEOUT_T3_RTX", 153 "TIMEOUT_T4_RTO", 154 "TIMEOUT_T5_SHUTDOWN_GUARD", 155 "TIMEOUT_HEARTBEAT", 156 "TIMEOUT_RECONF", 157 "TIMEOUT_PROBE", 158 "TIMEOUT_SACK", 159 "TIMEOUT_AUTOCLOSE", 160 }; 161 162 /* Lookup timer debug name. */ 163 const char *sctp_tname(const union sctp_subtype id) 164 { 165 BUILD_BUG_ON(SCTP_EVENT_TIMEOUT_MAX + 1 != ARRAY_SIZE(sctp_timer_tbl)); 166 167 if (id.timeout < ARRAY_SIZE(sctp_timer_tbl)) 168 return sctp_timer_tbl[id.timeout]; 169 return "unknown_timer"; 170 } 171