Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6] / net / sctp / debug.c
1 /* SCTP kernel reference 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 reference Implementation
8  *
9  * This file is part of the implementation of the add-IP extension,
10  * based on <draft-ietf-tsvwg-addip-sctp-02.txt> June 29, 2001,
11  * for the SCTP kernel reference Implementation.
12  *
13  * This file converts numerical ID value to alphabetical names for SCTP
14  * terms such as chunk type, parameter time, event type, etc.
15  *
16  * The SCTP reference implementation is free software;
17  * you can redistribute it and/or modify it under the terms of
18  * the GNU General Public License as published by
19  * the Free Software Foundation; either version 2, or (at your option)
20  * any later version.
21  *
22  * The SCTP reference implementation is distributed in the hope that it
23  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
24  *                 ************************
25  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
26  * See the GNU General Public License for more details.
27  *
28  * You should have received a copy of the GNU General Public License
29  * along with GNU CC; see the file COPYING.  If not, write to
30  * the Free Software Foundation, 59 Temple Place - Suite 330,
31  * Boston, MA 02111-1307, USA.
32  *
33  * Please send any bug reports or fixes you make to the
34  * email address(es):
35  *    lksctp developers <lksctp-developers@lists.sourceforge.net>
36  *
37  * Or submit a bug report through the following website:
38  *    http://www.sf.net/projects/lksctp
39  *
40  * Written or modified by:
41  *    La Monte H.P. Yarroll <piggy@acm.org>
42  *    Karl Knutson          <karl@athena.chicago.il.us>
43  *    Xingang Guo           <xingang.guo@intel.com>
44  *    Jon Grimm             <jgrimm@us.ibm.com>
45  *    Daisy Chang           <daisyc@us.ibm.com>
46  *    Sridhar Samudrala     <sri@us.ibm.com>
47  *
48  * Any bugs reported given to us we will try to fix... any fixes shared will
49  * be incorporated into the next SCTP release.
50  */
51
52 #include <net/sctp/sctp.h>
53
54 #if SCTP_DEBUG
55 int sctp_debug_flag = 1;        /* Initially enable DEBUG */
56 #endif  /* SCTP_DEBUG */
57
58 /* These are printable forms of Chunk ID's from section 3.1.  */
59 static const char *sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = {
60         "DATA",
61         "INIT",
62         "INIT_ACK",
63         "SACK",
64         "HEARTBEAT",
65         "HEARTBEAT_ACK",
66         "ABORT",
67         "SHUTDOWN",
68         "SHUTDOWN_ACK",
69         "ERROR",
70         "COOKIE_ECHO",
71         "COOKIE_ACK",
72         "ECN_ECNE",
73         "ECN_CWR",
74         "SHUTDOWN_COMPLETE",
75 };
76
77 /* Lookup "chunk type" debug name. */
78 const char *sctp_cname(const sctp_subtype_t cid)
79 {
80         if (cid.chunk <= SCTP_CID_BASE_MAX)
81                 return sctp_cid_tbl[cid.chunk];
82
83         switch (cid.chunk) {
84         case SCTP_CID_ASCONF:
85                 return "ASCONF";
86
87         case SCTP_CID_ASCONF_ACK:
88                 return "ASCONF_ACK";
89
90         case SCTP_CID_FWD_TSN:
91                 return "FWD_TSN";
92
93         default:
94                 break;
95         }
96
97         return "unknown chunk";
98 }
99
100 /* These are printable forms of the states.  */
101 const char *sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
102         "STATE_EMPTY",
103         "STATE_CLOSED",
104         "STATE_COOKIE_WAIT",
105         "STATE_COOKIE_ECHOED",
106         "STATE_ESTABLISHED",
107         "STATE_SHUTDOWN_PENDING",
108         "STATE_SHUTDOWN_SENT",
109         "STATE_SHUTDOWN_RECEIVED",
110         "STATE_SHUTDOWN_ACK_SENT",
111 };
112
113 /* Events that could change the state of an association.  */
114 const char *sctp_evttype_tbl[] = {
115         "EVENT_T_unknown",
116         "EVENT_T_CHUNK",
117         "EVENT_T_TIMEOUT",
118         "EVENT_T_OTHER",
119         "EVENT_T_PRIMITIVE"
120 };
121
122 /* Return value of a state function */
123 const char *sctp_status_tbl[] = {
124         "DISPOSITION_DISCARD",
125         "DISPOSITION_CONSUME",
126         "DISPOSITION_NOMEM",
127         "DISPOSITION_DELETE_TCB",
128         "DISPOSITION_ABORT",
129         "DISPOSITION_VIOLATION",
130         "DISPOSITION_NOT_IMPL",
131         "DISPOSITION_ERROR",
132         "DISPOSITION_BUG"
133 };
134
135 /* Printable forms of primitives */
136 static const char *sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {
137         "PRIMITIVE_ASSOCIATE",
138         "PRIMITIVE_SHUTDOWN",
139         "PRIMITIVE_ABORT",
140         "PRIMITIVE_SEND",
141         "PRIMITIVE_REQUESTHEARTBEAT",
142 };
143
144 /* Lookup primitive debug name. */
145 const char *sctp_pname(const sctp_subtype_t id)
146 {
147         if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX)
148                 return sctp_primitive_tbl[id.primitive];
149         return "unknown_primitive";
150 }
151
152 static const char *sctp_other_tbl[] = {
153         "NO_PENDING_TSN",
154         "ICMP_PROTO_UNREACH",
155 };
156
157 /* Lookup "other" debug name. */
158 const char *sctp_oname(const sctp_subtype_t id)
159 {
160         if (id.other <= SCTP_EVENT_OTHER_MAX)
161                 return sctp_other_tbl[id.other];
162         return "unknown 'other' event";
163 }
164
165 static const char *sctp_timer_tbl[] = {
166         "TIMEOUT_NONE",
167         "TIMEOUT_T1_COOKIE",
168         "TIMEOUT_T1_INIT",
169         "TIMEOUT_T2_SHUTDOWN",
170         "TIMEOUT_T3_RTX",
171         "TIMEOUT_T4_RTO",
172         "TIMEOUT_T5_SHUTDOWN_GUARD",
173         "TIMEOUT_HEARTBEAT",
174         "TIMEOUT_SACK",
175         "TIMEOUT_AUTOCLOSE",
176 };
177
178 /* Lookup timer debug name. */
179 const char *sctp_tname(const sctp_subtype_t id)
180 {
181         if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX)
182                 return sctp_timer_tbl[id.timeout];
183         return "unknown_timer";
184 }