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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 <[email protected]>
16 *
17 * Written or modified by:
18 * La Monte H.P. Yarroll <[email protected]>
19 * Karl Knutson <[email protected]>
20 * Xingang Guo <[email protected]>
21 * Jon Grimm <[email protected]>
22 * Daisy Chang <[email protected]>
23 * Sridhar Samudrala <[email protected]>
24 */
25
26#include <net/sctp/sctp.h>
27
28/* These are printable forms of Chunk ID's from section 3.1. */
29static 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. */
48const 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. */
83const 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. */
95const 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 */
104const 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 */
117static 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. */
127const 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
134static const char *const sctp_other_tbl[] = {
135 "NO_PENDING_TSN",
136 "ICMP_PROTO_UNREACH",
137};
138
139/* Lookup "other" debug name. */
140const 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
147static 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. */
163const 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}