xref: /openbmc/linux/net/sctp/debug.c (revision 92548ec2)
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. */
sctp_cname(const union sctp_subtype cid)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. */
sctp_pname(const union sctp_subtype id)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. */
sctp_oname(const union sctp_subtype id)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. */
sctp_tname(const union sctp_subtype id)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