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, write to
26  * the Free Software Foundation, 59 Temple Place - Suite 330,
27  * Boston, MA 02111-1307, USA.
28  *
29  * Please send any bug reports or fixes you make to the
30  * email address(es):
31  *    lksctp developers <lksctp-developers@lists.sourceforge.net>
32  *
33  * Or submit a bug report through the following website:
34  *    http://www.sf.net/projects/lksctp
35  *
36  * Written or modified by:
37  *    La Monte H.P. Yarroll <piggy@acm.org>
38  *    Karl Knutson          <karl@athena.chicago.il.us>
39  *    Xingang Guo           <xingang.guo@intel.com>
40  *    Jon Grimm             <jgrimm@us.ibm.com>
41  *    Daisy Chang	    <daisyc@us.ibm.com>
42  *    Sridhar Samudrala	    <sri@us.ibm.com>
43  *
44  * Any bugs reported given to us we will try to fix... any fixes shared will
45  * be incorporated into the next SCTP release.
46  */
47 
48 #include <net/sctp/sctp.h>
49 
50 #if SCTP_DEBUG
51 int sctp_debug_flag = 1;	/* Initially enable DEBUG */
52 #endif	/* SCTP_DEBUG */
53 
54 /* These are printable forms of Chunk ID's from section 3.1.  */
55 static const char *const sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = {
56 	"DATA",
57 	"INIT",
58 	"INIT_ACK",
59 	"SACK",
60 	"HEARTBEAT",
61 	"HEARTBEAT_ACK",
62 	"ABORT",
63 	"SHUTDOWN",
64 	"SHUTDOWN_ACK",
65 	"ERROR",
66 	"COOKIE_ECHO",
67 	"COOKIE_ACK",
68 	"ECN_ECNE",
69 	"ECN_CWR",
70 	"SHUTDOWN_COMPLETE",
71 };
72 
73 /* Lookup "chunk type" debug name. */
sctp_cname(const sctp_subtype_t cid)74 const char *sctp_cname(const sctp_subtype_t cid)
75 {
76 	if (cid.chunk <= SCTP_CID_BASE_MAX)
77 		return sctp_cid_tbl[cid.chunk];
78 
79 	switch (cid.chunk) {
80 	case SCTP_CID_ASCONF:
81 		return "ASCONF";
82 
83 	case SCTP_CID_ASCONF_ACK:
84 		return "ASCONF_ACK";
85 
86 	case SCTP_CID_FWD_TSN:
87 		return "FWD_TSN";
88 
89 	case SCTP_CID_AUTH:
90 		return "AUTH";
91 
92 	default:
93 		break;
94 	}
95 
96 	return "unknown chunk";
97 }
98 
99 /* These are printable forms of the states.  */
100 const char *const sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
101 	"STATE_CLOSED",
102 	"STATE_COOKIE_WAIT",
103 	"STATE_COOKIE_ECHOED",
104 	"STATE_ESTABLISHED",
105 	"STATE_SHUTDOWN_PENDING",
106 	"STATE_SHUTDOWN_SENT",
107 	"STATE_SHUTDOWN_RECEIVED",
108 	"STATE_SHUTDOWN_ACK_SENT",
109 };
110 
111 /* Events that could change the state of an association.  */
112 const char *const sctp_evttype_tbl[] = {
113 	"EVENT_T_unknown",
114 	"EVENT_T_CHUNK",
115 	"EVENT_T_TIMEOUT",
116 	"EVENT_T_OTHER",
117 	"EVENT_T_PRIMITIVE"
118 };
119 
120 /* Return value of a state function */
121 const char *const sctp_status_tbl[] = {
122 	"DISPOSITION_DISCARD",
123 	"DISPOSITION_CONSUME",
124 	"DISPOSITION_NOMEM",
125 	"DISPOSITION_DELETE_TCB",
126 	"DISPOSITION_ABORT",
127 	"DISPOSITION_VIOLATION",
128 	"DISPOSITION_NOT_IMPL",
129 	"DISPOSITION_ERROR",
130 	"DISPOSITION_BUG"
131 };
132 
133 /* Printable forms of primitives */
134 static const char *const sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {
135 	"PRIMITIVE_ASSOCIATE",
136 	"PRIMITIVE_SHUTDOWN",
137 	"PRIMITIVE_ABORT",
138 	"PRIMITIVE_SEND",
139 	"PRIMITIVE_REQUESTHEARTBEAT",
140 	"PRIMITIVE_ASCONF",
141 };
142 
143 /* Lookup primitive debug name. */
sctp_pname(const sctp_subtype_t id)144 const char *sctp_pname(const sctp_subtype_t id)
145 {
146 	if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX)
147 		return sctp_primitive_tbl[id.primitive];
148 	return "unknown_primitive";
149 }
150 
151 static const char *const sctp_other_tbl[] = {
152 	"NO_PENDING_TSN",
153 	"ICMP_PROTO_UNREACH",
154 };
155 
156 /* Lookup "other" debug name. */
sctp_oname(const sctp_subtype_t id)157 const char *sctp_oname(const sctp_subtype_t id)
158 {
159 	if (id.other <= SCTP_EVENT_OTHER_MAX)
160 		return sctp_other_tbl[id.other];
161 	return "unknown 'other' event";
162 }
163 
164 static const char *const sctp_timer_tbl[] = {
165 	"TIMEOUT_NONE",
166 	"TIMEOUT_T1_COOKIE",
167 	"TIMEOUT_T1_INIT",
168 	"TIMEOUT_T2_SHUTDOWN",
169 	"TIMEOUT_T3_RTX",
170 	"TIMEOUT_T4_RTO",
171 	"TIMEOUT_T5_SHUTDOWN_GUARD",
172 	"TIMEOUT_HEARTBEAT",
173 	"TIMEOUT_SACK",
174 	"TIMEOUT_AUTOCLOSE",
175 };
176 
177 /* Lookup timer debug name. */
sctp_tname(const sctp_subtype_t id)178 const char *sctp_tname(const sctp_subtype_t id)
179 {
180 	if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX)
181 		return sctp_timer_tbl[id.timeout];
182 	return "unknown_timer";
183 }
184