xref: /openbmc/linux/net/sctp/debug.c (revision c819e2cf)
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.  */
44  static 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. */
63  const char *sctp_cname(const sctp_subtype_t 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  	default:
82  		break;
83  	}
84  
85  	return "unknown chunk";
86  }
87  
88  /* These are printable forms of the states.  */
89  const char *const sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
90  	"STATE_CLOSED",
91  	"STATE_COOKIE_WAIT",
92  	"STATE_COOKIE_ECHOED",
93  	"STATE_ESTABLISHED",
94  	"STATE_SHUTDOWN_PENDING",
95  	"STATE_SHUTDOWN_SENT",
96  	"STATE_SHUTDOWN_RECEIVED",
97  	"STATE_SHUTDOWN_ACK_SENT",
98  };
99  
100  /* Events that could change the state of an association.  */
101  const char *const sctp_evttype_tbl[] = {
102  	"EVENT_T_unknown",
103  	"EVENT_T_CHUNK",
104  	"EVENT_T_TIMEOUT",
105  	"EVENT_T_OTHER",
106  	"EVENT_T_PRIMITIVE"
107  };
108  
109  /* Return value of a state function */
110  const char *const sctp_status_tbl[] = {
111  	"DISPOSITION_DISCARD",
112  	"DISPOSITION_CONSUME",
113  	"DISPOSITION_NOMEM",
114  	"DISPOSITION_DELETE_TCB",
115  	"DISPOSITION_ABORT",
116  	"DISPOSITION_VIOLATION",
117  	"DISPOSITION_NOT_IMPL",
118  	"DISPOSITION_ERROR",
119  	"DISPOSITION_BUG"
120  };
121  
122  /* Printable forms of primitives */
123  static const char *const sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {
124  	"PRIMITIVE_ASSOCIATE",
125  	"PRIMITIVE_SHUTDOWN",
126  	"PRIMITIVE_ABORT",
127  	"PRIMITIVE_SEND",
128  	"PRIMITIVE_REQUESTHEARTBEAT",
129  	"PRIMITIVE_ASCONF",
130  };
131  
132  /* Lookup primitive debug name. */
133  const char *sctp_pname(const sctp_subtype_t id)
134  {
135  	if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX)
136  		return sctp_primitive_tbl[id.primitive];
137  	return "unknown_primitive";
138  }
139  
140  static const char *const sctp_other_tbl[] = {
141  	"NO_PENDING_TSN",
142  	"ICMP_PROTO_UNREACH",
143  };
144  
145  /* Lookup "other" debug name. */
146  const char *sctp_oname(const sctp_subtype_t id)
147  {
148  	if (id.other <= SCTP_EVENT_OTHER_MAX)
149  		return sctp_other_tbl[id.other];
150  	return "unknown 'other' event";
151  }
152  
153  static const char *const sctp_timer_tbl[] = {
154  	"TIMEOUT_NONE",
155  	"TIMEOUT_T1_COOKIE",
156  	"TIMEOUT_T1_INIT",
157  	"TIMEOUT_T2_SHUTDOWN",
158  	"TIMEOUT_T3_RTX",
159  	"TIMEOUT_T4_RTO",
160  	"TIMEOUT_T5_SHUTDOWN_GUARD",
161  	"TIMEOUT_HEARTBEAT",
162  	"TIMEOUT_SACK",
163  	"TIMEOUT_AUTOCLOSE",
164  };
165  
166  /* Lookup timer debug name. */
167  const char *sctp_tname(const sctp_subtype_t id)
168  {
169  	if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX)
170  		return sctp_timer_tbl[id.timeout];
171  	return "unknown_timer";
172  }
173