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 172686 2007-10-16 02:31:48Z mlaier $
22 */
23#ifndef lint
24static const char rcsid[] _U_ =
25 "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.38.2.6 2006/01/25 13:27:24 hannes 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
48struct tok oam_f_values[] = {
49 { OAMF4SC, "OAM F4 (segment)" },
50 { OAMF4EC, "OAM F4 (end)" },
51 { 0, NULL }
52};
53
54struct tok oam_celltype_values[] = {
55 { 0x1, "Fault Management" },
56 { 0x2, "Performance Management" },
57 { 0x8, "activate/deactivate" },
58 { 0xf, "System Management" },
59 { 0, NULL }
60};
61
62struct tok oam_fm_functype_values[] = {
63 { 0x0, "AIS" },
64 { 0x1, "RDI" },
65 { 0x4, "Continuity Check" },
66 { 0x8, "Loopback" },
67 { 0, NULL }
68};
69
70struct tok oam_pm_functype_values[] = {
71 { 0x0, "Forward Monitoring" },
72 { 0x1, "Backward Reporting" },
73 { 0x2, "Monitoring and Reporting" },
74 { 0, NULL }
75};
76
77struct tok oam_ad_functype_values[] = {
78 { 0x0, "Performance Monitoring" },
79 { 0x1, "Continuity Check" },
80 { 0, NULL }
81};
82
83static const struct tok *oam_functype_values[16] = {
84 NULL,
85 oam_fm_functype_values, /* 1 */
86 oam_pm_functype_values, /* 2 */
87 NULL,
88 NULL,
89 NULL,
90 NULL,
91 NULL,
92 oam_ad_functype_values, /* 8 */
93 NULL,
94 NULL,
95 NULL,
96 NULL,
97 NULL,
98 NULL,
99 NULL
100};
101
102/*
103 * Print an RFC 1483 LLC-encapsulated ATM frame.
104 */
105static void
106atm_llc_print(const u_char *p, int length, int caplen)
107{
108 u_short extracted_ethertype;
109
110 if (!llc_print(p, length, caplen, NULL, NULL,
111 &extracted_ethertype)) {
112 /* ether_type not known, print raw packet */
113 if (extracted_ethertype) {
114 printf("(LLC %s) ",
115 etherproto_string(htons(extracted_ethertype)));
116 }
117 if (!suppress_default_print)
118 default_print(p, caplen);
119 }
120}
121
122/*
123 * Given a SAP value, generate the LLC header value for a UI packet
124 * with that SAP as the source and destination SAP.
125 */
126#define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03)
127
128/*
129 * This is the top level routine of the printer. 'p' points
130 * to the LLC/SNAP header of the packet, 'h->ts' is the timestamp,
131 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
132 * is the number of bytes actually captured.
133 */
134u_int
135atm_if_print(const struct pcap_pkthdr *h, const u_char *p)
136{
137 u_int caplen = h->caplen;
138 u_int length = h->len;
139 u_int32_t llchdr;
140 u_int hdrlen = 0;
141
142 if (caplen < 8) {
143 printf("[|atm]");
144 return (caplen);
145 }
146
147 /* Cisco Style NLPID ? */
148 if (*p == LLC_UI) {
149 if (eflag)
150 printf("CNLPID ");
151 isoclns_print(p+1, length-1, caplen-1);
152 return hdrlen;
153 }
154
155 /*
156 * Extract the presumed LLC header into a variable, for quick
157 * testing.
158 * Then check for a header that's neither a header for a SNAP
159 * packet nor an RFC 2684 routed NLPID-formatted PDU nor
160 * an 802.2-but-no-SNAP IP packet.
161 */
162 llchdr = EXTRACT_24BITS(p);
163 if (llchdr != LLC_UI_HDR(LLCSAP_SNAP) &&
164 llchdr != LLC_UI_HDR(LLCSAP_ISONS) &&
165 llchdr != LLC_UI_HDR(LLCSAP_IP)) {
166 /*
167 * XXX - assume 802.6 MAC header from Fore driver.
168 *
169 * Unfortunately, the above list doesn't check for
170 * all known SAPs, doesn't check for headers where
171 * the source and destination SAP aren't the same,
172 * and doesn't check for non-UI frames. It also
173 * runs the risk of an 802.6 MAC header that happens
174 * to begin with one of those values being
175 * incorrectly treated as an 802.2 header.
176 *
177 * So is that Fore driver still around? And, if so,
178 * is it still putting 802.6 MAC headers on ATM
179 * packets? If so, could it be changed to use a
180 * new DLT_IEEE802_6 value if we added it?
181 */
182 if (eflag)
183 printf("%08x%08x %08x%08x ",
184 EXTRACT_32BITS(p),
185 EXTRACT_32BITS(p+4),
186 EXTRACT_32BITS(p+8),
187 EXTRACT_32BITS(p+12));
188 p += 20;
189 length -= 20;
190 caplen -= 20;
191 hdrlen += 20;
192 }
193 atm_llc_print(p, length, caplen);
194 return (hdrlen);
195}
196
197/*
198 * ATM signalling.
199 */
200static struct tok msgtype2str[] = {
201 { CALL_PROCEED, "Call_proceeding" },
202 { CONNECT, "Connect" },
203 { CONNECT_ACK, "Connect_ack" },
204 { SETUP, "Setup" },
205 { RELEASE, "Release" },
206 { RELEASE_DONE, "Release_complete" },
207 { RESTART, "Restart" },
208 { RESTART_ACK, "Restart_ack" },
209 { STATUS, "Status" },
210 { STATUS_ENQ, "Status_enquiry" },
211 { ADD_PARTY, "Add_party" },
212 { ADD_PARTY_ACK, "Add_party_ack" },
213 { ADD_PARTY_REJ, "Add_party_reject" },
214 { DROP_PARTY, "Drop_party" },
215 { DROP_PARTY_ACK, "Drop_party_ack" },
216 { 0, NULL }
217};
218
219static void
220sig_print(const u_char *p, int caplen)
221{
222 bpf_u_int32 call_ref;
223
224 if (caplen < PROTO_POS) {
225 printf("[|atm]");
226 return;
227 }
228 if (p[PROTO_POS] == Q2931) {
229 /*
230 * protocol:Q.2931 for User to Network Interface
231 * (UNI 3.1) signalling
232 */
233 printf("Q.2931");
234 if (caplen < MSG_TYPE_POS) {
235 printf(" [|atm]");
236 return;
237 }
238 printf(":%s ",
239 tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));
240
241 if (caplen < CALL_REF_POS+3) {
242 printf("[|atm]");
243 return;
244 }
245 call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
246 printf("CALL_REF:0x%06x", call_ref);
247 } else {
248 /* SCCOP with some unknown protocol atop it */
249 printf("SSCOP, proto %d ", p[PROTO_POS]);
250 }
251}
252
253/*
254 * Print an ATM PDU (such as an AAL5 PDU).
255 */
256void
257atm_print(u_int vpi, u_int vci, u_int traftype, const u_char *p, u_int length,
258 u_int caplen)
259{
260 if (eflag)
261 printf("VPI:%u VCI:%u ", vpi, vci);
262
263 if (vpi == 0) {
264 switch (vci) {
265
266 case PPC:
267 sig_print(p, caplen);
268 return;
269
270 case BCC:
271 printf("broadcast sig: ");
272 return;
273
274 case OAMF4SC: /* fall through */
275 case OAMF4EC:
276 oam_print(p, length, ATM_OAM_HEC);
277 return;
278
279 case METAC:
280 printf("meta: ");
281 return;
282
283 case ILMIC:
284 printf("ilmi: ");
285 snmp_print(p, length);
286 return;
287 }
288 }
289
290 switch (traftype) {
291
292 case ATM_LLC:
293 default:
294 /*
295 * Assumes traffic is LLC if unknown.
296 */
297 atm_llc_print(p, length, caplen);
298 break;
299
300 case ATM_LANE:
301 lane_print(p, length, caplen);
302 break;
303 }
304}
305
306int
307oam_print (const u_char *p, u_int length, u_int hec) {
308
309 u_int32_t cell_header;
310 u_int16_t cell_type, func_type,vpi,vci,payload,clp;
311
312 cell_header = EXTRACT_32BITS(p+hec);
313 cell_type = ((*(p+4+hec))>>4) & 0x0f;
314 func_type = *(p+4+hec) & 0x0f;
315
316 vpi = (cell_header>>20)&0xff;
317 vci = (cell_header>>4)&0xffff;
318 payload = (cell_header>>1)&0x7;
319 clp = cell_header&0x1;
320
321 printf("%s, vpi %u, vci %u, payload %u, clp %u, ",
322 tok2str(oam_f_values, "OAM F5", vci),
323 vpi, vci, payload, clp);
324
325 printf("cell-type %s (%u)",
326 tok2str(oam_celltype_values, "unknown", cell_type),
327 cell_type);
328
329 if (oam_functype_values[cell_type] == NULL)
330 printf(", func-type unknown (%u)", func_type);
331 else
332 printf(", func-type %s (%u)",
333 bittok2str(oam_functype_values[cell_type],"none",func_type),
334 func_type);
335
336 printf(", length %u",length);
337 return 1;
338}
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 172686 2007-10-16 02:31:48Z mlaier $
22 */
23#ifndef lint
24static const char rcsid[] _U_ =
25 "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.38.2.6 2006/01/25 13:27:24 hannes 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
48struct tok oam_f_values[] = {
49 { OAMF4SC, "OAM F4 (segment)" },
50 { OAMF4EC, "OAM F4 (end)" },
51 { 0, NULL }
52};
53
54struct tok oam_celltype_values[] = {
55 { 0x1, "Fault Management" },
56 { 0x2, "Performance Management" },
57 { 0x8, "activate/deactivate" },
58 { 0xf, "System Management" },
59 { 0, NULL }
60};
61
62struct tok oam_fm_functype_values[] = {
63 { 0x0, "AIS" },
64 { 0x1, "RDI" },
65 { 0x4, "Continuity Check" },
66 { 0x8, "Loopback" },
67 { 0, NULL }
68};
69
70struct tok oam_pm_functype_values[] = {
71 { 0x0, "Forward Monitoring" },
72 { 0x1, "Backward Reporting" },
73 { 0x2, "Monitoring and Reporting" },
74 { 0, NULL }
75};
76
77struct tok oam_ad_functype_values[] = {
78 { 0x0, "Performance Monitoring" },
79 { 0x1, "Continuity Check" },
80 { 0, NULL }
81};
82
83static const struct tok *oam_functype_values[16] = {
84 NULL,
85 oam_fm_functype_values, /* 1 */
86 oam_pm_functype_values, /* 2 */
87 NULL,
88 NULL,
89 NULL,
90 NULL,
91 NULL,
92 oam_ad_functype_values, /* 8 */
93 NULL,
94 NULL,
95 NULL,
96 NULL,
97 NULL,
98 NULL,
99 NULL
100};
101
102/*
103 * Print an RFC 1483 LLC-encapsulated ATM frame.
104 */
105static void
106atm_llc_print(const u_char *p, int length, int caplen)
107{
108 u_short extracted_ethertype;
109
110 if (!llc_print(p, length, caplen, NULL, NULL,
111 &extracted_ethertype)) {
112 /* ether_type not known, print raw packet */
113 if (extracted_ethertype) {
114 printf("(LLC %s) ",
115 etherproto_string(htons(extracted_ethertype)));
116 }
117 if (!suppress_default_print)
118 default_print(p, caplen);
119 }
120}
121
122/*
123 * Given a SAP value, generate the LLC header value for a UI packet
124 * with that SAP as the source and destination SAP.
125 */
126#define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03)
127
128/*
129 * This is the top level routine of the printer. 'p' points
130 * to the LLC/SNAP header of the packet, 'h->ts' is the timestamp,
131 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
132 * is the number of bytes actually captured.
133 */
134u_int
135atm_if_print(const struct pcap_pkthdr *h, const u_char *p)
136{
137 u_int caplen = h->caplen;
138 u_int length = h->len;
139 u_int32_t llchdr;
140 u_int hdrlen = 0;
141
142 if (caplen < 8) {
143 printf("[|atm]");
144 return (caplen);
145 }
146
147 /* Cisco Style NLPID ? */
148 if (*p == LLC_UI) {
149 if (eflag)
150 printf("CNLPID ");
151 isoclns_print(p+1, length-1, caplen-1);
152 return hdrlen;
153 }
154
155 /*
156 * Extract the presumed LLC header into a variable, for quick
157 * testing.
158 * Then check for a header that's neither a header for a SNAP
159 * packet nor an RFC 2684 routed NLPID-formatted PDU nor
160 * an 802.2-but-no-SNAP IP packet.
161 */
162 llchdr = EXTRACT_24BITS(p);
163 if (llchdr != LLC_UI_HDR(LLCSAP_SNAP) &&
164 llchdr != LLC_UI_HDR(LLCSAP_ISONS) &&
165 llchdr != LLC_UI_HDR(LLCSAP_IP)) {
166 /*
167 * XXX - assume 802.6 MAC header from Fore driver.
168 *
169 * Unfortunately, the above list doesn't check for
170 * all known SAPs, doesn't check for headers where
171 * the source and destination SAP aren't the same,
172 * and doesn't check for non-UI frames. It also
173 * runs the risk of an 802.6 MAC header that happens
174 * to begin with one of those values being
175 * incorrectly treated as an 802.2 header.
176 *
177 * So is that Fore driver still around? And, if so,
178 * is it still putting 802.6 MAC headers on ATM
179 * packets? If so, could it be changed to use a
180 * new DLT_IEEE802_6 value if we added it?
181 */
182 if (eflag)
183 printf("%08x%08x %08x%08x ",
184 EXTRACT_32BITS(p),
185 EXTRACT_32BITS(p+4),
186 EXTRACT_32BITS(p+8),
187 EXTRACT_32BITS(p+12));
188 p += 20;
189 length -= 20;
190 caplen -= 20;
191 hdrlen += 20;
192 }
193 atm_llc_print(p, length, caplen);
194 return (hdrlen);
195}
196
197/*
198 * ATM signalling.
199 */
200static struct tok msgtype2str[] = {
201 { CALL_PROCEED, "Call_proceeding" },
202 { CONNECT, "Connect" },
203 { CONNECT_ACK, "Connect_ack" },
204 { SETUP, "Setup" },
205 { RELEASE, "Release" },
206 { RELEASE_DONE, "Release_complete" },
207 { RESTART, "Restart" },
208 { RESTART_ACK, "Restart_ack" },
209 { STATUS, "Status" },
210 { STATUS_ENQ, "Status_enquiry" },
211 { ADD_PARTY, "Add_party" },
212 { ADD_PARTY_ACK, "Add_party_ack" },
213 { ADD_PARTY_REJ, "Add_party_reject" },
214 { DROP_PARTY, "Drop_party" },
215 { DROP_PARTY_ACK, "Drop_party_ack" },
216 { 0, NULL }
217};
218
219static void
220sig_print(const u_char *p, int caplen)
221{
222 bpf_u_int32 call_ref;
223
224 if (caplen < PROTO_POS) {
225 printf("[|atm]");
226 return;
227 }
228 if (p[PROTO_POS] == Q2931) {
229 /*
230 * protocol:Q.2931 for User to Network Interface
231 * (UNI 3.1) signalling
232 */
233 printf("Q.2931");
234 if (caplen < MSG_TYPE_POS) {
235 printf(" [|atm]");
236 return;
237 }
238 printf(":%s ",
239 tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));
240
241 if (caplen < CALL_REF_POS+3) {
242 printf("[|atm]");
243 return;
244 }
245 call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
246 printf("CALL_REF:0x%06x", call_ref);
247 } else {
248 /* SCCOP with some unknown protocol atop it */
249 printf("SSCOP, proto %d ", p[PROTO_POS]);
250 }
251}
252
253/*
254 * Print an ATM PDU (such as an AAL5 PDU).
255 */
256void
257atm_print(u_int vpi, u_int vci, u_int traftype, const u_char *p, u_int length,
258 u_int caplen)
259{
260 if (eflag)
261 printf("VPI:%u VCI:%u ", vpi, vci);
262
263 if (vpi == 0) {
264 switch (vci) {
265
266 case PPC:
267 sig_print(p, caplen);
268 return;
269
270 case BCC:
271 printf("broadcast sig: ");
272 return;
273
274 case OAMF4SC: /* fall through */
275 case OAMF4EC:
276 oam_print(p, length, ATM_OAM_HEC);
277 return;
278
279 case METAC:
280 printf("meta: ");
281 return;
282
283 case ILMIC:
284 printf("ilmi: ");
285 snmp_print(p, length);
286 return;
287 }
288 }
289
290 switch (traftype) {
291
292 case ATM_LLC:
293 default:
294 /*
295 * Assumes traffic is LLC if unknown.
296 */
297 atm_llc_print(p, length, caplen);
298 break;
299
300 case ATM_LANE:
301 lane_print(p, length, caplen);
302 break;
303 }
304}
305
306int
307oam_print (const u_char *p, u_int length, u_int hec) {
308
309 u_int32_t cell_header;
310 u_int16_t cell_type, func_type,vpi,vci,payload,clp;
311
312 cell_header = EXTRACT_32BITS(p+hec);
313 cell_type = ((*(p+4+hec))>>4) & 0x0f;
314 func_type = *(p+4+hec) & 0x0f;
315
316 vpi = (cell_header>>20)&0xff;
317 vci = (cell_header>>4)&0xffff;
318 payload = (cell_header>>1)&0x7;
319 clp = cell_header&0x1;
320
321 printf("%s, vpi %u, vci %u, payload %u, clp %u, ",
322 tok2str(oam_f_values, "OAM F5", vci),
323 vpi, vci, payload, clp);
324
325 printf("cell-type %s (%u)",
326 tok2str(oam_celltype_values, "unknown", cell_type),
327 cell_type);
328
329 if (oam_functype_values[cell_type] == NULL)
330 printf(", func-type unknown (%u)", func_type);
331 else
332 printf(", func-type %s (%u)",
333 bittok2str(oam_functype_values[cell_type],"none",func_type),
334 func_type);
335
336 printf(", length %u",length);
337 return 1;
338}