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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, see
26 * <http://www.gnu.org/licenses/>.
27 *
28 * Please send any bug reports or fixes you make to the
29 * email address(es):
30 * lksctp developers <linux-sctp@vger.kernel.org>
31 *
32 * Written or modified by:
33 * La Monte H.P. Yarroll <piggy@acm.org>
34 * Karl Knutson <karl@athena.chicago.il.us>
35 * Xingang Guo <xingang.guo@intel.com>
36 * Jon Grimm <jgrimm@us.ibm.com>
37 * Daisy Chang <daisyc@us.ibm.com>
38 * Sridhar Samudrala <sri@us.ibm.com>
39 */
40
41#include <net/sctp/sctp.h>
42
43/* These are printable forms of Chunk ID's from section 3.1. */
44static const char *const sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = {
45 "DATA",
46 "INIT",
47 "INIT_ACK",
48 "SACK",
49 "HEARTBEAT",
50 "HEARTBEAT_ACK",
51 "ABORT",
52 "SHUTDOWN",
53 "SHUTDOWN_ACK",
54 "ERROR",
55 "COOKIE_ECHO",
56 "COOKIE_ACK",
57 "ECN_ECNE",
58 "ECN_CWR",
59 "SHUTDOWN_COMPLETE",
60};
61
62/* Lookup "chunk type" debug name. */
63const char *sctp_cname(const union sctp_subtype cid)
64{
65 if (cid.chunk <= SCTP_CID_BASE_MAX)
66 return sctp_cid_tbl[cid.chunk];
67
68 switch (cid.chunk) {
69 case SCTP_CID_ASCONF:
70 return "ASCONF";
71
72 case SCTP_CID_ASCONF_ACK:
73 return "ASCONF_ACK";
74
75 case SCTP_CID_FWD_TSN:
76 return "FWD_TSN";
77
78 case SCTP_CID_AUTH:
79 return "AUTH";
80
81 case SCTP_CID_RECONF:
82 return "RECONF";
83
84 default:
85 break;
86 }
87
88 return "unknown chunk";
89}
90
91/* These are printable forms of the states. */
92const char *const sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
93 "STATE_CLOSED",
94 "STATE_COOKIE_WAIT",
95 "STATE_COOKIE_ECHOED",
96 "STATE_ESTABLISHED",
97 "STATE_SHUTDOWN_PENDING",
98 "STATE_SHUTDOWN_SENT",
99 "STATE_SHUTDOWN_RECEIVED",
100 "STATE_SHUTDOWN_ACK_SENT",
101};
102
103/* Events that could change the state of an association. */
104const char *const sctp_evttype_tbl[] = {
105 "EVENT_T_unknown",
106 "EVENT_T_CHUNK",
107 "EVENT_T_TIMEOUT",
108 "EVENT_T_OTHER",
109 "EVENT_T_PRIMITIVE"
110};
111
112/* Return value of a state function */
113const char *const sctp_status_tbl[] = {
114 "DISPOSITION_DISCARD",
115 "DISPOSITION_CONSUME",
116 "DISPOSITION_NOMEM",
117 "DISPOSITION_DELETE_TCB",
118 "DISPOSITION_ABORT",
119 "DISPOSITION_VIOLATION",
120 "DISPOSITION_NOT_IMPL",
121 "DISPOSITION_ERROR",
122 "DISPOSITION_BUG"
123};
124
125/* Printable forms of primitives */
126static const char *const sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {
127 "PRIMITIVE_ASSOCIATE",
128 "PRIMITIVE_SHUTDOWN",
129 "PRIMITIVE_ABORT",
130 "PRIMITIVE_SEND",
131 "PRIMITIVE_REQUESTHEARTBEAT",
132 "PRIMITIVE_ASCONF",
133};
134
135/* Lookup primitive debug name. */
136const char *sctp_pname(const union sctp_subtype id)
137{
138 if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX)
139 return sctp_primitive_tbl[id.primitive];
140 return "unknown_primitive";
141}
142
143static const char *const sctp_other_tbl[] = {
144 "NO_PENDING_TSN",
145 "ICMP_PROTO_UNREACH",
146};
147
148/* Lookup "other" debug name. */
149const char *sctp_oname(const union sctp_subtype id)
150{
151 if (id.other <= SCTP_EVENT_OTHER_MAX)
152 return sctp_other_tbl[id.other];
153 return "unknown 'other' event";
154}
155
156static const char *const sctp_timer_tbl[] = {
157 "TIMEOUT_NONE",
158 "TIMEOUT_T1_COOKIE",
159 "TIMEOUT_T1_INIT",
160 "TIMEOUT_T2_SHUTDOWN",
161 "TIMEOUT_T3_RTX",
162 "TIMEOUT_T4_RTO",
163 "TIMEOUT_T5_SHUTDOWN_GUARD",
164 "TIMEOUT_HEARTBEAT",
165 "TIMEOUT_RECONF",
166 "TIMEOUT_SACK",
167 "TIMEOUT_AUTOCLOSE",
168};
169
170/* Lookup timer debug name. */
171const char *sctp_tname(const union sctp_subtype id)
172{
173 BUILD_BUG_ON(SCTP_EVENT_TIMEOUT_MAX + 1 != ARRAY_SIZE(sctp_timer_tbl));
174
175 if (id.timeout < ARRAY_SIZE(sctp_timer_tbl))
176 return sctp_timer_tbl[id.timeout];
177 return "unknown_timer";
178}