1 // SPDX-License-Identifier: GPL-2.0-or-later 1
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 implem
9 *
10 * This file converts numerical ID value to al
11 * terms such as chunk type, parameter time, e
12 *
13 * Please send any bug reports or fixes you ma
14 * email address(es):
15 * lksctp developers <linux-sctp@vger.kerne
16 *
17 * Written or modified by:
18 * La Monte H.P. Yarroll <piggy@acm.org>
19 * Karl Knutson <karl@athena.chica
20 * Xingang Guo <xingang.guo@intel
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 fro
29 static const char *const sctp_cid_tbl[SCTP_NUM
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_subtyp
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_NU
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 as
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[SC
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_subtyp
128 {
129 if (id.primitive <= SCTP_EVENT_PRIMITI
130 return sctp_primitive_tbl[id.p
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_subtyp
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_subtyp
164 {
165 BUILD_BUG_ON(SCTP_EVENT_TIMEOUT_MAX +
166
167 if (id.timeout < ARRAY_SIZE(sctp_timer
168 return sctp_timer_tbl[id.timeo
169 return "unknown_timer";
170 }
171
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