Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / print-atm.c
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1/*
2 * Copyright (c) 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 */
21#ifndef lint
22static const char rcsid[] _U_ =
23 "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.38.2.6 2006/01/25 13:27:24 hannes Exp $ (LBL)";
24#endif
25
26#ifdef HAVE_CONFIG_H
27#include "config.h"
28#endif
29
30#include <tcpdump-stdinc.h>
31
32#include <stdio.h>
33#include <pcap.h>
34#include <string.h>
35
36#include "interface.h"
37#include "extract.h"
38#include "addrtoname.h"
39#include "ethertype.h"
40#include "atm.h"
41#include "atmuni31.h"
42#include "llc.h"
43
44#include "ether.h"
45
46struct tok oam_f_values[] = {
47 { OAMF4SC, "OAM F4 (segment)" },
48 { OAMF4EC, "OAM F4 (end)" },
49 { 0, NULL }
50};
51
52struct tok oam_celltype_values[] = {
53 { 0x1, "Fault Management" },
54 { 0x2, "Performance Management" },
55 { 0x8, "activate/deactivate" },
56 { 0xf, "System Management" },
57 { 0, NULL }
58};
59
60struct tok oam_fm_functype_values[] = {
61 { 0x0, "AIS" },
62 { 0x1, "RDI" },
63 { 0x4, "Continuity Check" },
64 { 0x8, "Loopback" },
65 { 0, NULL }
66};
67
68struct tok oam_pm_functype_values[] = {
69 { 0x0, "Forward Monitoring" },
70 { 0x1, "Backward Reporting" },
71 { 0x2, "Monitoring and Reporting" },
72 { 0, NULL }
73};
74
75struct tok oam_ad_functype_values[] = {
76 { 0x0, "Performance Monitoring" },
77 { 0x1, "Continuity Check" },
78 { 0, NULL }
79};
80
81static const struct tok *oam_functype_values[16] = {
82 NULL,
83 oam_fm_functype_values, /* 1 */
84 oam_pm_functype_values, /* 2 */
85 NULL,
86 NULL,
87 NULL,
88 NULL,
89 NULL,
90 oam_ad_functype_values, /* 8 */
91 NULL,
92 NULL,
93 NULL,
94 NULL,
95 NULL,
96 NULL,
97 NULL
98};
99
100/*
101 * Print an RFC 1483 LLC-encapsulated ATM frame.
102 */
103static void
104atm_llc_print(const u_char *p, int length, int caplen)
105{
106 u_short extracted_ethertype;
107
108 if (!llc_print(p, length, caplen, NULL, NULL,
109 &extracted_ethertype)) {
110 /* ether_type not known, print raw packet */
111 if (extracted_ethertype) {
112 printf("(LLC %s) ",
113 etherproto_string(htons(extracted_ethertype)));
114 }
115 if (!suppress_default_print)
116 default_print(p, caplen);
117 }
118}
119
120/*
121 * Given a SAP value, generate the LLC header value for a UI packet
122 * with that SAP as the source and destination SAP.
123 */
124#define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03)
125
126/*
127 * This is the top level routine of the printer. 'p' points
128 * to the LLC/SNAP header of the packet, 'h->ts' is the timestamp,
129 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
130 * is the number of bytes actually captured.
131 */
132u_int
133atm_if_print(const struct pcap_pkthdr *h, const u_char *p)
134{
135 u_int caplen = h->caplen;
136 u_int length = h->len;
137 u_int32_t llchdr;
138 u_int hdrlen = 0;
139
140 if (caplen < 8) {
141 printf("[|atm]");
142 return (caplen);
143 }
144
145 /* Cisco Style NLPID ? */
146 if (*p == LLC_UI) {
147 if (eflag)
148 printf("CNLPID ");
149 isoclns_print(p+1, length-1, caplen-1);
150 return hdrlen;
151 }
152
153 /*
154 * Extract the presumed LLC header into a variable, for quick
155 * testing.
156 * Then check for a header that's neither a header for a SNAP
157 * packet nor an RFC 2684 routed NLPID-formatted PDU nor
158 * an 802.2-but-no-SNAP IP packet.
159 */
160 llchdr = EXTRACT_24BITS(p);
161 if (llchdr != LLC_UI_HDR(LLCSAP_SNAP) &&
162 llchdr != LLC_UI_HDR(LLCSAP_ISONS) &&
163 llchdr != LLC_UI_HDR(LLCSAP_IP)) {
164 /*
165 * XXX - assume 802.6 MAC header from Fore driver.
166 *
167 * Unfortunately, the above list doesn't check for
168 * all known SAPs, doesn't check for headers where
169 * the source and destination SAP aren't the same,
170 * and doesn't check for non-UI frames. It also
171 * runs the risk of an 802.6 MAC header that happens
172 * to begin with one of those values being
173 * incorrectly treated as an 802.2 header.
174 *
175 * So is that Fore driver still around? And, if so,
176 * is it still putting 802.6 MAC headers on ATM
177 * packets? If so, could it be changed to use a
178 * new DLT_IEEE802_6 value if we added it?
179 */
180 if (eflag)
181 printf("%08x%08x %08x%08x ",
182 EXTRACT_32BITS(p),
183 EXTRACT_32BITS(p+4),
184 EXTRACT_32BITS(p+8),
185 EXTRACT_32BITS(p+12));
186 p += 20;
187 length -= 20;
188 caplen -= 20;
189 hdrlen += 20;
190 }
191 atm_llc_print(p, length, caplen);
192 return (hdrlen);
193}
194
195/*
196 * ATM signalling.
197 */
198static struct tok msgtype2str[] = {
199 { CALL_PROCEED, "Call_proceeding" },
200 { CONNECT, "Connect" },
201 { CONNECT_ACK, "Connect_ack" },
202 { SETUP, "Setup" },
203 { RELEASE, "Release" },
204 { RELEASE_DONE, "Release_complete" },
205 { RESTART, "Restart" },
206 { RESTART_ACK, "Restart_ack" },
207 { STATUS, "Status" },
208 { STATUS_ENQ, "Status_enquiry" },
209 { ADD_PARTY, "Add_party" },
210 { ADD_PARTY_ACK, "Add_party_ack" },
211 { ADD_PARTY_REJ, "Add_party_reject" },
212 { DROP_PARTY, "Drop_party" },
213 { DROP_PARTY_ACK, "Drop_party_ack" },
214 { 0, NULL }
215};
216
217static void
218sig_print(const u_char *p, int caplen)
219{
220 bpf_u_int32 call_ref;
221
222 if (caplen < PROTO_POS) {
223 printf("[|atm]");
224 return;
225 }
226 if (p[PROTO_POS] == Q2931) {
227 /*
228 * protocol:Q.2931 for User to Network Interface
229 * (UNI 3.1) signalling
230 */
231 printf("Q.2931");
232 if (caplen < MSG_TYPE_POS) {
233 printf(" [|atm]");
234 return;
235 }
236 printf(":%s ",
237 tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));
238
239 if (caplen < CALL_REF_POS+3) {
240 printf("[|atm]");
241 return;
242 }
243 call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
244 printf("CALL_REF:0x%06x", call_ref);
245 } else {
246 /* SCCOP with some unknown protocol atop it */
247 printf("SSCOP, proto %d ", p[PROTO_POS]);
248 }
249}
250
251/*
252 * Print an ATM PDU (such as an AAL5 PDU).
253 */
254void
255atm_print(u_int vpi, u_int vci, u_int traftype, const u_char *p, u_int length,
256 u_int caplen)
257{
258 if (eflag)
259 printf("VPI:%u VCI:%u ", vpi, vci);
260
261 if (vpi == 0) {
262 switch (vci) {
263
264 case PPC:
265 sig_print(p, caplen);
266 return;
267
268 case BCC:
269 printf("broadcast sig: ");
270 return;
271
272 case OAMF4SC: /* fall through */
273 case OAMF4EC:
274 oam_print(p, length, ATM_OAM_HEC);
275 return;
276
277 case METAC:
278 printf("meta: ");
279 return;
280
281 case ILMIC:
282 printf("ilmi: ");
283 snmp_print(p, length);
284 return;
285 }
286 }
287
288 switch (traftype) {
289
290 case ATM_LLC:
291 default:
292 /*
293 * Assumes traffic is LLC if unknown.
294 */
295 atm_llc_print(p, length, caplen);
296 break;
297
298 case ATM_LANE:
299 lane_print(p, length, caplen);
300 break;
301 }
302}
303
304int
305oam_print (const u_char *p, u_int length, u_int hec) {
306
307 u_int32_t cell_header;
308 u_int16_t cell_type, func_type,vpi,vci,payload,clp;
309
310 cell_header = EXTRACT_32BITS(p+hec);
311 cell_type = ((*(p+4+hec))>>4) & 0x0f;
312 func_type = *(p+4+hec) & 0x0f;
313
314 vpi = (cell_header>>20)&0xff;
315 vci = (cell_header>>4)&0xffff;
316 payload = (cell_header>>1)&0x7;
317 clp = cell_header&0x1;
318
319 printf("%s, vpi %u, vci %u, payload %u, clp %u, ",
320 tok2str(oam_f_values, "OAM F5", vci),
321 vpi, vci, payload, clp);
322
323 printf("cell-type %s (%u)",
324 tok2str(oam_celltype_values, "unknown", cell_type),
325 cell_type);
326
327 if (oam_functype_values[cell_type] == NULL)
328 printf(", func-type unknown (%u)", func_type);
329 else
330 printf(", func-type %s (%u)",
331 bittok2str(oam_functype_values[cell_type],"none",func_type),
332 func_type);
333
334 printf(", length %u",length);
335 return 1;
336}