xref: /openbmc/linux/net/sctp/debug.c (revision 9dd7c463)
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