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 * $FreeBSD: head/contrib/tcpdump/print-atm.c 190207 2009-03-21 18:30:25Z rpaulo $
22 */
23#ifndef lint
24static const char rcsid[] _U_ =
25 "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.48.2.1 2007-10-22 19:39:12 guy Exp $ (LBL)";
26#endif
27
28#ifdef HAVE_CONFIG_H
29#include "config.h"
30#endif
31
32#include <tcpdump-stdinc.h>
33
34#include <stdio.h>
35#include <pcap.h>
36#include <string.h>
37
38#include "interface.h"
39#include "extract.h"
40#include "addrtoname.h"
41#include "ethertype.h"
42#include "atm.h"
43#include "atmuni31.h"
44#include "llc.h"
45
46#include "ether.h"
47
48#define OAM_CRC10_MASK 0x3ff
49#define OAM_PAYLOAD_LEN 48
50#define OAM_FUNCTION_SPECIFIC_LEN 45 /* this excludes crc10 and cell-type/function-type */
51#define OAM_CELLTYPE_FUNCTYPE_LEN 1
52
53struct tok oam_f_values[] = {
54 { VCI_OAMF4SC, "OAM F4 (segment)" },
55 { VCI_OAMF4EC, "OAM F4 (end)" },
56 { 0, NULL }
57};
58
59struct tok atm_pty_values[] = {
60 { 0x0, "user data, uncongested, SDU 0" },
61 { 0x1, "user data, uncongested, SDU 1" },
62 { 0x2, "user data, congested, SDU 0" },
63 { 0x3, "user data, congested, SDU 1" },
64 { 0x4, "VCC OAM F5 flow segment" },
65 { 0x5, "VCC OAM F5 flow end-to-end" },
66 { 0x6, "Traffic Control and resource Mgmt" },
67 { 0, NULL }
68};
69
70#define OAM_CELLTYPE_FM 0x1
71#define OAM_CELLTYPE_PM 0x2
72#define OAM_CELLTYPE_AD 0x8
73#define OAM_CELLTYPE_SM 0xf
74
75struct tok oam_celltype_values[] = {
76 { OAM_CELLTYPE_FM, "Fault Management" },
77 { OAM_CELLTYPE_PM, "Performance Management" },
78 { OAM_CELLTYPE_AD, "activate/deactivate" },
79 { OAM_CELLTYPE_SM, "System Management" },
80 { 0, NULL }
81};
82
83#define OAM_FM_FUNCTYPE_AIS 0x0
84#define OAM_FM_FUNCTYPE_RDI 0x1
85#define OAM_FM_FUNCTYPE_CONTCHECK 0x4
86#define OAM_FM_FUNCTYPE_LOOPBACK 0x8
87
88struct tok oam_fm_functype_values[] = {
89 { OAM_FM_FUNCTYPE_AIS, "AIS" },
90 { OAM_FM_FUNCTYPE_RDI, "RDI" },
91 { OAM_FM_FUNCTYPE_CONTCHECK, "Continuity Check" },
92 { OAM_FM_FUNCTYPE_LOOPBACK, "Loopback" },
93 { 0, NULL }
94};
95
96struct tok oam_pm_functype_values[] = {
97 { 0x0, "Forward Monitoring" },
98 { 0x1, "Backward Reporting" },
99 { 0x2, "Monitoring and Reporting" },
100 { 0, NULL }
101};
102
103struct tok oam_ad_functype_values[] = {
104 { 0x0, "Performance Monitoring" },
105 { 0x1, "Continuity Check" },
106 { 0, NULL }
107};
108
109#define OAM_FM_LOOPBACK_INDICATOR_MASK 0x1
110
111struct tok oam_fm_loopback_indicator_values[] = {
112 { 0x0, "Reply" },
113 { 0x1, "Request" },
114 { 0, NULL }
115};
116
117static const struct tok *oam_functype_values[16] = {
118 NULL,
119 oam_fm_functype_values, /* 1 */
120 oam_pm_functype_values, /* 2 */
121 NULL,
122 NULL,
123 NULL,
124 NULL,
125 NULL,
126 oam_ad_functype_values, /* 8 */
127 NULL,
128 NULL,
129 NULL,
130 NULL,
131 NULL,
132 NULL,
133 NULL
134};
135
136/*
137 * Print an RFC 1483 LLC-encapsulated ATM frame.
138 */
139static void
140atm_llc_print(const u_char *p, int length, int caplen)
141{
142 u_short extracted_ethertype;
143
144 if (!llc_print(p, length, caplen, NULL, NULL,
145 &extracted_ethertype)) {
146 /* ether_type not known, print raw packet */
147 if (extracted_ethertype) {
148 printf("(LLC %s) ",
149 etherproto_string(htons(extracted_ethertype)));
150 }
151 if (!suppress_default_print)
152 default_print(p, caplen);
153 }
154}
155
156/*
157 * Given a SAP value, generate the LLC header value for a UI packet
158 * with that SAP as the source and destination SAP.
159 */
160#define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03)
161
162/*
163 * This is the top level routine of the printer. 'p' points
164 * to the LLC/SNAP header of the packet, 'h->ts' is the timestamp,
165 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
166 * is the number of bytes actually captured.
167 */
168u_int
169atm_if_print(const struct pcap_pkthdr *h, const u_char *p)
170{
171 u_int caplen = h->caplen;
172 u_int length = h->len;
173 u_int32_t llchdr;
174 u_int hdrlen = 0;
175
176 if (caplen < 8) {
177 printf("[|atm]");
178 return (caplen);
179 }
180
181 /* Cisco Style NLPID ? */
182 if (*p == LLC_UI) {
183 if (eflag)
184 printf("CNLPID ");
185 isoclns_print(p+1, length-1, caplen-1);
186 return hdrlen;
187 }
188
189 /*
190 * Extract the presumed LLC header into a variable, for quick
191 * testing.
192 * Then check for a header that's neither a header for a SNAP
193 * packet nor an RFC 2684 routed NLPID-formatted PDU nor
194 * an 802.2-but-no-SNAP IP packet.
195 */
196 llchdr = EXTRACT_24BITS(p);
197 if (llchdr != LLC_UI_HDR(LLCSAP_SNAP) &&
198 llchdr != LLC_UI_HDR(LLCSAP_ISONS) &&
199 llchdr != LLC_UI_HDR(LLCSAP_IP)) {
200 /*
201 * XXX - assume 802.6 MAC header from Fore driver.
202 *
203 * Unfortunately, the above list doesn't check for
204 * all known SAPs, doesn't check for headers where
205 * the source and destination SAP aren't the same,
206 * and doesn't check for non-UI frames. It also
207 * runs the risk of an 802.6 MAC header that happens
208 * to begin with one of those values being
209 * incorrectly treated as an 802.2 header.
210 *
211 * So is that Fore driver still around? And, if so,
212 * is it still putting 802.6 MAC headers on ATM
213 * packets? If so, could it be changed to use a
214 * new DLT_IEEE802_6 value if we added it?
215 */
216 if (eflag)
217 printf("%08x%08x %08x%08x ",
218 EXTRACT_32BITS(p),
219 EXTRACT_32BITS(p+4),
220 EXTRACT_32BITS(p+8),
221 EXTRACT_32BITS(p+12));
222 p += 20;
223 length -= 20;
224 caplen -= 20;
225 hdrlen += 20;
226 }
227 atm_llc_print(p, length, caplen);
228 return (hdrlen);
229}
230
231/*
232 * ATM signalling.
233 */
234static struct tok msgtype2str[] = {
235 { CALL_PROCEED, "Call_proceeding" },
236 { CONNECT, "Connect" },
237 { CONNECT_ACK, "Connect_ack" },
238 { SETUP, "Setup" },
239 { RELEASE, "Release" },
240 { RELEASE_DONE, "Release_complete" },
241 { RESTART, "Restart" },
242 { RESTART_ACK, "Restart_ack" },
243 { STATUS, "Status" },
244 { STATUS_ENQ, "Status_enquiry" },
245 { ADD_PARTY, "Add_party" },
246 { ADD_PARTY_ACK, "Add_party_ack" },
247 { ADD_PARTY_REJ, "Add_party_reject" },
248 { DROP_PARTY, "Drop_party" },
249 { DROP_PARTY_ACK, "Drop_party_ack" },
250 { 0, NULL }
251};
252
253static void
254sig_print(const u_char *p, int caplen)
255{
256 bpf_u_int32 call_ref;
257
258 if (caplen < PROTO_POS) {
259 printf("[|atm]");
260 return;
261 }
262 if (p[PROTO_POS] == Q2931) {
263 /*
264 * protocol:Q.2931 for User to Network Interface
265 * (UNI 3.1) signalling
266 */
267 printf("Q.2931");
268 if (caplen < MSG_TYPE_POS) {
269 printf(" [|atm]");
270 return;
271 }
272 printf(":%s ",
273 tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));
274
275 if (caplen < CALL_REF_POS+3) {
276 printf("[|atm]");
277 return;
278 }
279 call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
280 printf("CALL_REF:0x%06x", call_ref);
281 } else {
282 /* SCCOP with some unknown protocol atop it */
283 printf("SSCOP, proto %d ", p[PROTO_POS]);
284 }
285}
286
287/*
288 * Print an ATM PDU (such as an AAL5 PDU).
289 */
290void
291atm_print(u_int vpi, u_int vci, u_int traftype, const u_char *p, u_int length,
292 u_int caplen)
293{
294 if (eflag)
295 printf("VPI:%u VCI:%u ", vpi, vci);
296
297 if (vpi == 0) {
298 switch (vci) {
299
300 case VCI_PPC:
301 sig_print(p, caplen);
302 return;
303
304 case VCI_BCC:
305 printf("broadcast sig: ");
306 return;
307
308 case VCI_OAMF4SC: /* fall through */
309 case VCI_OAMF4EC:
310 oam_print(p, length, ATM_OAM_HEC);
311 return;
312
313 case VCI_METAC:
314 printf("meta: ");
315 return;
316
317 case VCI_ILMIC:
318 printf("ilmi: ");
319 snmp_print(p, length);
320 return;
321 }
322 }
323
324 switch (traftype) {
325
326 case ATM_LLC:
327 default:
328 /*
329 * Assumes traffic is LLC if unknown.
330 */
331 atm_llc_print(p, length, caplen);
332 break;
333
334 case ATM_LANE:
335 lane_print(p, length, caplen);
336 break;
337 }
338}
339
340struct oam_fm_loopback_t {
341 u_int8_t loopback_indicator;
342 u_int8_t correlation_tag[4];
343 u_int8_t loopback_id[12];
344 u_int8_t source_id[12];
345 u_int8_t unused[16];
346};
347
348struct oam_fm_ais_rdi_t {
349 u_int8_t failure_type;
350 u_int8_t failure_location[16];
351 u_int8_t unused[28];
352};
353
354int
355oam_print (const u_char *p, u_int length, u_int hec) {
356
357 u_int32_t cell_header;
358 u_int16_t vpi, vci, cksum, cksum_shouldbe, idx;
359 u_int8_t cell_type, func_type, payload, clp;
360
361 union {
362 const struct oam_fm_loopback_t *oam_fm_loopback;
363 const struct oam_fm_ais_rdi_t *oam_fm_ais_rdi;
364 } oam_ptr;
365
366
367 cell_header = EXTRACT_32BITS(p+hec);
368 cell_type = ((*(p+ATM_HDR_LEN_NOHEC+hec))>>4) & 0x0f;
369 func_type = (*(p+ATM_HDR_LEN_NOHEC+hec)) & 0x0f;
370
371 vpi = (cell_header>>20)&0xff;
372 vci = (cell_header>>4)&0xffff;
373 payload = (cell_header>>1)&0x7;
374 clp = cell_header&0x1;
375
376 printf("%s, vpi %u, vci %u, payload [ %s ], clp %u, length %u",
377 tok2str(oam_f_values, "OAM F5", vci),
378 vpi, vci,
379 tok2str(atm_pty_values, "Unknown", payload),
380 clp, length);
381
382 if (!vflag) {
383 return 1;
384 }
385
386 printf("\n\tcell-type %s (%u)",
387 tok2str(oam_celltype_values, "unknown", cell_type),
388 cell_type);
389
390 if (oam_functype_values[cell_type] == NULL)
391 printf(", func-type unknown (%u)", func_type);
392 else
393 printf(", func-type %s (%u)",
394 tok2str(oam_functype_values[cell_type],"none",func_type),
395 func_type);
396
397 p += ATM_HDR_LEN_NOHEC + hec;
398
399 switch (cell_type << 4 | func_type) {
400 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_LOOPBACK):
401 oam_ptr.oam_fm_loopback = (const struct oam_fm_loopback_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN);
402 printf("\n\tLoopback-Indicator %s, Correlation-Tag 0x%08x",
403 tok2str(oam_fm_loopback_indicator_values,
404 "Unknown",
405 oam_ptr.oam_fm_loopback->loopback_indicator & OAM_FM_LOOPBACK_INDICATOR_MASK),
406 EXTRACT_32BITS(&oam_ptr.oam_fm_loopback->correlation_tag));
407 printf("\n\tLocation-ID ");
408 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->loopback_id); idx++) {
409 if (idx % 2) {
410 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->loopback_id[idx]));
411 }
412 }
413 printf("\n\tSource-ID ");
414 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->source_id); idx++) {
415 if (idx % 2) {
416 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->source_id[idx]));
417 }
418 }
419 break;
420
421 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_AIS):
422 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_RDI):
423 oam_ptr.oam_fm_ais_rdi = (const struct oam_fm_ais_rdi_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN);
424 printf("\n\tFailure-type 0x%02x", oam_ptr.oam_fm_ais_rdi->failure_type);
425 printf("\n\tLocation-ID ");
426 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_ais_rdi->failure_location); idx++) {
427 if (idx % 2) {
428 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_ais_rdi->failure_location[idx]));
429 }
430 }
431 break;
432
433 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_CONTCHECK):
434 /* FIXME */
435 break;
436
437 default:
438 break;
439 }
440
441 /* crc10 checksum verification */
442 cksum = EXTRACT_16BITS(p + OAM_CELLTYPE_FUNCTYPE_LEN + OAM_FUNCTION_SPECIFIC_LEN)
443 & OAM_CRC10_MASK;
444 cksum_shouldbe = verify_crc10_cksum(0, p, OAM_PAYLOAD_LEN);
445
446 printf("\n\tcksum 0x%03x (%scorrect)",
447 cksum,
448 cksum_shouldbe == 0 ? "" : "in");
449
450 return 1;
451}
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 * $FreeBSD: head/contrib/tcpdump/print-atm.c 190207 2009-03-21 18:30:25Z rpaulo $
22 */
23#ifndef lint
24static const char rcsid[] _U_ =
25 "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.48.2.1 2007-10-22 19:39:12 guy Exp $ (LBL)";
26#endif
27
28#ifdef HAVE_CONFIG_H
29#include "config.h"
30#endif
31
32#include <tcpdump-stdinc.h>
33
34#include <stdio.h>
35#include <pcap.h>
36#include <string.h>
37
38#include "interface.h"
39#include "extract.h"
40#include "addrtoname.h"
41#include "ethertype.h"
42#include "atm.h"
43#include "atmuni31.h"
44#include "llc.h"
45
46#include "ether.h"
47
48#define OAM_CRC10_MASK 0x3ff
49#define OAM_PAYLOAD_LEN 48
50#define OAM_FUNCTION_SPECIFIC_LEN 45 /* this excludes crc10 and cell-type/function-type */
51#define OAM_CELLTYPE_FUNCTYPE_LEN 1
52
53struct tok oam_f_values[] = {
54 { VCI_OAMF4SC, "OAM F4 (segment)" },
55 { VCI_OAMF4EC, "OAM F4 (end)" },
56 { 0, NULL }
57};
58
59struct tok atm_pty_values[] = {
60 { 0x0, "user data, uncongested, SDU 0" },
61 { 0x1, "user data, uncongested, SDU 1" },
62 { 0x2, "user data, congested, SDU 0" },
63 { 0x3, "user data, congested, SDU 1" },
64 { 0x4, "VCC OAM F5 flow segment" },
65 { 0x5, "VCC OAM F5 flow end-to-end" },
66 { 0x6, "Traffic Control and resource Mgmt" },
67 { 0, NULL }
68};
69
70#define OAM_CELLTYPE_FM 0x1
71#define OAM_CELLTYPE_PM 0x2
72#define OAM_CELLTYPE_AD 0x8
73#define OAM_CELLTYPE_SM 0xf
74
75struct tok oam_celltype_values[] = {
76 { OAM_CELLTYPE_FM, "Fault Management" },
77 { OAM_CELLTYPE_PM, "Performance Management" },
78 { OAM_CELLTYPE_AD, "activate/deactivate" },
79 { OAM_CELLTYPE_SM, "System Management" },
80 { 0, NULL }
81};
82
83#define OAM_FM_FUNCTYPE_AIS 0x0
84#define OAM_FM_FUNCTYPE_RDI 0x1
85#define OAM_FM_FUNCTYPE_CONTCHECK 0x4
86#define OAM_FM_FUNCTYPE_LOOPBACK 0x8
87
88struct tok oam_fm_functype_values[] = {
89 { OAM_FM_FUNCTYPE_AIS, "AIS" },
90 { OAM_FM_FUNCTYPE_RDI, "RDI" },
91 { OAM_FM_FUNCTYPE_CONTCHECK, "Continuity Check" },
92 { OAM_FM_FUNCTYPE_LOOPBACK, "Loopback" },
93 { 0, NULL }
94};
95
96struct tok oam_pm_functype_values[] = {
97 { 0x0, "Forward Monitoring" },
98 { 0x1, "Backward Reporting" },
99 { 0x2, "Monitoring and Reporting" },
100 { 0, NULL }
101};
102
103struct tok oam_ad_functype_values[] = {
104 { 0x0, "Performance Monitoring" },
105 { 0x1, "Continuity Check" },
106 { 0, NULL }
107};
108
109#define OAM_FM_LOOPBACK_INDICATOR_MASK 0x1
110
111struct tok oam_fm_loopback_indicator_values[] = {
112 { 0x0, "Reply" },
113 { 0x1, "Request" },
114 { 0, NULL }
115};
116
117static const struct tok *oam_functype_values[16] = {
118 NULL,
119 oam_fm_functype_values, /* 1 */
120 oam_pm_functype_values, /* 2 */
121 NULL,
122 NULL,
123 NULL,
124 NULL,
125 NULL,
126 oam_ad_functype_values, /* 8 */
127 NULL,
128 NULL,
129 NULL,
130 NULL,
131 NULL,
132 NULL,
133 NULL
134};
135
136/*
137 * Print an RFC 1483 LLC-encapsulated ATM frame.
138 */
139static void
140atm_llc_print(const u_char *p, int length, int caplen)
141{
142 u_short extracted_ethertype;
143
144 if (!llc_print(p, length, caplen, NULL, NULL,
145 &extracted_ethertype)) {
146 /* ether_type not known, print raw packet */
147 if (extracted_ethertype) {
148 printf("(LLC %s) ",
149 etherproto_string(htons(extracted_ethertype)));
150 }
151 if (!suppress_default_print)
152 default_print(p, caplen);
153 }
154}
155
156/*
157 * Given a SAP value, generate the LLC header value for a UI packet
158 * with that SAP as the source and destination SAP.
159 */
160#define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03)
161
162/*
163 * This is the top level routine of the printer. 'p' points
164 * to the LLC/SNAP header of the packet, 'h->ts' is the timestamp,
165 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
166 * is the number of bytes actually captured.
167 */
168u_int
169atm_if_print(const struct pcap_pkthdr *h, const u_char *p)
170{
171 u_int caplen = h->caplen;
172 u_int length = h->len;
173 u_int32_t llchdr;
174 u_int hdrlen = 0;
175
176 if (caplen < 8) {
177 printf("[|atm]");
178 return (caplen);
179 }
180
181 /* Cisco Style NLPID ? */
182 if (*p == LLC_UI) {
183 if (eflag)
184 printf("CNLPID ");
185 isoclns_print(p+1, length-1, caplen-1);
186 return hdrlen;
187 }
188
189 /*
190 * Extract the presumed LLC header into a variable, for quick
191 * testing.
192 * Then check for a header that's neither a header for a SNAP
193 * packet nor an RFC 2684 routed NLPID-formatted PDU nor
194 * an 802.2-but-no-SNAP IP packet.
195 */
196 llchdr = EXTRACT_24BITS(p);
197 if (llchdr != LLC_UI_HDR(LLCSAP_SNAP) &&
198 llchdr != LLC_UI_HDR(LLCSAP_ISONS) &&
199 llchdr != LLC_UI_HDR(LLCSAP_IP)) {
200 /*
201 * XXX - assume 802.6 MAC header from Fore driver.
202 *
203 * Unfortunately, the above list doesn't check for
204 * all known SAPs, doesn't check for headers where
205 * the source and destination SAP aren't the same,
206 * and doesn't check for non-UI frames. It also
207 * runs the risk of an 802.6 MAC header that happens
208 * to begin with one of those values being
209 * incorrectly treated as an 802.2 header.
210 *
211 * So is that Fore driver still around? And, if so,
212 * is it still putting 802.6 MAC headers on ATM
213 * packets? If so, could it be changed to use a
214 * new DLT_IEEE802_6 value if we added it?
215 */
216 if (eflag)
217 printf("%08x%08x %08x%08x ",
218 EXTRACT_32BITS(p),
219 EXTRACT_32BITS(p+4),
220 EXTRACT_32BITS(p+8),
221 EXTRACT_32BITS(p+12));
222 p += 20;
223 length -= 20;
224 caplen -= 20;
225 hdrlen += 20;
226 }
227 atm_llc_print(p, length, caplen);
228 return (hdrlen);
229}
230
231/*
232 * ATM signalling.
233 */
234static struct tok msgtype2str[] = {
235 { CALL_PROCEED, "Call_proceeding" },
236 { CONNECT, "Connect" },
237 { CONNECT_ACK, "Connect_ack" },
238 { SETUP, "Setup" },
239 { RELEASE, "Release" },
240 { RELEASE_DONE, "Release_complete" },
241 { RESTART, "Restart" },
242 { RESTART_ACK, "Restart_ack" },
243 { STATUS, "Status" },
244 { STATUS_ENQ, "Status_enquiry" },
245 { ADD_PARTY, "Add_party" },
246 { ADD_PARTY_ACK, "Add_party_ack" },
247 { ADD_PARTY_REJ, "Add_party_reject" },
248 { DROP_PARTY, "Drop_party" },
249 { DROP_PARTY_ACK, "Drop_party_ack" },
250 { 0, NULL }
251};
252
253static void
254sig_print(const u_char *p, int caplen)
255{
256 bpf_u_int32 call_ref;
257
258 if (caplen < PROTO_POS) {
259 printf("[|atm]");
260 return;
261 }
262 if (p[PROTO_POS] == Q2931) {
263 /*
264 * protocol:Q.2931 for User to Network Interface
265 * (UNI 3.1) signalling
266 */
267 printf("Q.2931");
268 if (caplen < MSG_TYPE_POS) {
269 printf(" [|atm]");
270 return;
271 }
272 printf(":%s ",
273 tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));
274
275 if (caplen < CALL_REF_POS+3) {
276 printf("[|atm]");
277 return;
278 }
279 call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
280 printf("CALL_REF:0x%06x", call_ref);
281 } else {
282 /* SCCOP with some unknown protocol atop it */
283 printf("SSCOP, proto %d ", p[PROTO_POS]);
284 }
285}
286
287/*
288 * Print an ATM PDU (such as an AAL5 PDU).
289 */
290void
291atm_print(u_int vpi, u_int vci, u_int traftype, const u_char *p, u_int length,
292 u_int caplen)
293{
294 if (eflag)
295 printf("VPI:%u VCI:%u ", vpi, vci);
296
297 if (vpi == 0) {
298 switch (vci) {
299
300 case VCI_PPC:
301 sig_print(p, caplen);
302 return;
303
304 case VCI_BCC:
305 printf("broadcast sig: ");
306 return;
307
308 case VCI_OAMF4SC: /* fall through */
309 case VCI_OAMF4EC:
310 oam_print(p, length, ATM_OAM_HEC);
311 return;
312
313 case VCI_METAC:
314 printf("meta: ");
315 return;
316
317 case VCI_ILMIC:
318 printf("ilmi: ");
319 snmp_print(p, length);
320 return;
321 }
322 }
323
324 switch (traftype) {
325
326 case ATM_LLC:
327 default:
328 /*
329 * Assumes traffic is LLC if unknown.
330 */
331 atm_llc_print(p, length, caplen);
332 break;
333
334 case ATM_LANE:
335 lane_print(p, length, caplen);
336 break;
337 }
338}
339
340struct oam_fm_loopback_t {
341 u_int8_t loopback_indicator;
342 u_int8_t correlation_tag[4];
343 u_int8_t loopback_id[12];
344 u_int8_t source_id[12];
345 u_int8_t unused[16];
346};
347
348struct oam_fm_ais_rdi_t {
349 u_int8_t failure_type;
350 u_int8_t failure_location[16];
351 u_int8_t unused[28];
352};
353
354int
355oam_print (const u_char *p, u_int length, u_int hec) {
356
357 u_int32_t cell_header;
358 u_int16_t vpi, vci, cksum, cksum_shouldbe, idx;
359 u_int8_t cell_type, func_type, payload, clp;
360
361 union {
362 const struct oam_fm_loopback_t *oam_fm_loopback;
363 const struct oam_fm_ais_rdi_t *oam_fm_ais_rdi;
364 } oam_ptr;
365
366
367 cell_header = EXTRACT_32BITS(p+hec);
368 cell_type = ((*(p+ATM_HDR_LEN_NOHEC+hec))>>4) & 0x0f;
369 func_type = (*(p+ATM_HDR_LEN_NOHEC+hec)) & 0x0f;
370
371 vpi = (cell_header>>20)&0xff;
372 vci = (cell_header>>4)&0xffff;
373 payload = (cell_header>>1)&0x7;
374 clp = cell_header&0x1;
375
376 printf("%s, vpi %u, vci %u, payload [ %s ], clp %u, length %u",
377 tok2str(oam_f_values, "OAM F5", vci),
378 vpi, vci,
379 tok2str(atm_pty_values, "Unknown", payload),
380 clp, length);
381
382 if (!vflag) {
383 return 1;
384 }
385
386 printf("\n\tcell-type %s (%u)",
387 tok2str(oam_celltype_values, "unknown", cell_type),
388 cell_type);
389
390 if (oam_functype_values[cell_type] == NULL)
391 printf(", func-type unknown (%u)", func_type);
392 else
393 printf(", func-type %s (%u)",
394 tok2str(oam_functype_values[cell_type],"none",func_type),
395 func_type);
396
397 p += ATM_HDR_LEN_NOHEC + hec;
398
399 switch (cell_type << 4 | func_type) {
400 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_LOOPBACK):
401 oam_ptr.oam_fm_loopback = (const struct oam_fm_loopback_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN);
402 printf("\n\tLoopback-Indicator %s, Correlation-Tag 0x%08x",
403 tok2str(oam_fm_loopback_indicator_values,
404 "Unknown",
405 oam_ptr.oam_fm_loopback->loopback_indicator & OAM_FM_LOOPBACK_INDICATOR_MASK),
406 EXTRACT_32BITS(&oam_ptr.oam_fm_loopback->correlation_tag));
407 printf("\n\tLocation-ID ");
408 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->loopback_id); idx++) {
409 if (idx % 2) {
410 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->loopback_id[idx]));
411 }
412 }
413 printf("\n\tSource-ID ");
414 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->source_id); idx++) {
415 if (idx % 2) {
416 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->source_id[idx]));
417 }
418 }
419 break;
420
421 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_AIS):
422 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_RDI):
423 oam_ptr.oam_fm_ais_rdi = (const struct oam_fm_ais_rdi_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN);
424 printf("\n\tFailure-type 0x%02x", oam_ptr.oam_fm_ais_rdi->failure_type);
425 printf("\n\tLocation-ID ");
426 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_ais_rdi->failure_location); idx++) {
427 if (idx % 2) {
428 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_ais_rdi->failure_location[idx]));
429 }
430 }
431 break;
432
433 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_CONTCHECK):
434 /* FIXME */
435 break;
436
437 default:
438 break;
439 }
440
441 /* crc10 checksum verification */
442 cksum = EXTRACT_16BITS(p + OAM_CELLTYPE_FUNCTYPE_LEN + OAM_FUNCTION_SPECIFIC_LEN)
443 & OAM_CRC10_MASK;
444 cksum_shouldbe = verify_crc10_cksum(0, p, OAM_PAYLOAD_LEN);
445
446 printf("\n\tcksum 0x%03x (%scorrect)",
447 cksum,
448 cksum_shouldbe == 0 ? "" : "in");
449
450 return 1;
451}