2 * Copyright (c) 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
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)
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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
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.
22 static const char rcsid[] _U_ =
23 "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.49 2007-10-22 19:37:51 guy Exp $ (LBL)";
30 #include <tcpdump-stdinc.h>
36 #include "interface.h"
38 #include "addrtoname.h"
39 #include "ethertype.h"
46 #define OAM_CRC10_MASK 0x3ff
47 #define OAM_PAYLOAD_LEN 48
48 #define OAM_FUNCTION_SPECIFIC_LEN 45 /* this excludes crc10 and cell-type/function-type */
49 #define OAM_CELLTYPE_FUNCTYPE_LEN 1
51 struct tok oam_f_values[] = {
52 { VCI_OAMF4SC, "OAM F4 (segment)" },
53 { VCI_OAMF4EC, "OAM F4 (end)" },
57 struct tok atm_pty_values[] = {
58 { 0x0, "user data, uncongested, SDU 0" },
59 { 0x1, "user data, uncongested, SDU 1" },
60 { 0x2, "user data, congested, SDU 0" },
61 { 0x3, "user data, congested, SDU 1" },
62 { 0x4, "VCC OAM F5 flow segment" },
63 { 0x5, "VCC OAM F5 flow end-to-end" },
64 { 0x6, "Traffic Control and resource Mgmt" },
68 #define OAM_CELLTYPE_FM 0x1
69 #define OAM_CELLTYPE_PM 0x2
70 #define OAM_CELLTYPE_AD 0x8
71 #define OAM_CELLTYPE_SM 0xf
73 struct tok oam_celltype_values[] = {
74 { OAM_CELLTYPE_FM, "Fault Management" },
75 { OAM_CELLTYPE_PM, "Performance Management" },
76 { OAM_CELLTYPE_AD, "activate/deactivate" },
77 { OAM_CELLTYPE_SM, "System Management" },
81 #define OAM_FM_FUNCTYPE_AIS 0x0
82 #define OAM_FM_FUNCTYPE_RDI 0x1
83 #define OAM_FM_FUNCTYPE_CONTCHECK 0x4
84 #define OAM_FM_FUNCTYPE_LOOPBACK 0x8
86 struct tok oam_fm_functype_values[] = {
87 { OAM_FM_FUNCTYPE_AIS, "AIS" },
88 { OAM_FM_FUNCTYPE_RDI, "RDI" },
89 { OAM_FM_FUNCTYPE_CONTCHECK, "Continuity Check" },
90 { OAM_FM_FUNCTYPE_LOOPBACK, "Loopback" },
94 struct tok oam_pm_functype_values[] = {
95 { 0x0, "Forward Monitoring" },
96 { 0x1, "Backward Reporting" },
97 { 0x2, "Monitoring and Reporting" },
101 struct tok oam_ad_functype_values[] = {
102 { 0x0, "Performance Monitoring" },
103 { 0x1, "Continuity Check" },
107 #define OAM_FM_LOOPBACK_INDICATOR_MASK 0x1
109 struct tok oam_fm_loopback_indicator_values[] = {
115 static const struct tok *oam_functype_values[16] = {
117 oam_fm_functype_values, /* 1 */
118 oam_pm_functype_values, /* 2 */
124 oam_ad_functype_values, /* 8 */
135 * Print an RFC 1483 LLC-encapsulated ATM frame.
138 atm_llc_print(const u_char *p, int length, int caplen)
140 u_short extracted_ethertype;
142 if (!llc_print(p, length, caplen, NULL, NULL,
143 &extracted_ethertype)) {
144 /* ether_type not known, print raw packet */
145 if (extracted_ethertype) {
147 etherproto_string(htons(extracted_ethertype)));
149 if (!suppress_default_print)
150 default_print(p, caplen);
155 * Given a SAP value, generate the LLC header value for a UI packet
156 * with that SAP as the source and destination SAP.
158 #define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03)
161 * This is the top level routine of the printer. 'p' points
162 * to the LLC/SNAP header of the packet, 'h->ts' is the timestamp,
163 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
164 * is the number of bytes actually captured.
167 atm_if_print(const struct pcap_pkthdr *h, const u_char *p)
169 u_int caplen = h->caplen;
170 u_int length = h->len;
179 /* Cisco Style NLPID ? */
183 isoclns_print(p+1, length-1, caplen-1);
188 * Extract the presumed LLC header into a variable, for quick
190 * Then check for a header that's neither a header for a SNAP
191 * packet nor an RFC 2684 routed NLPID-formatted PDU nor
192 * an 802.2-but-no-SNAP IP packet.
194 llchdr = EXTRACT_24BITS(p);
195 if (llchdr != LLC_UI_HDR(LLCSAP_SNAP) &&
196 llchdr != LLC_UI_HDR(LLCSAP_ISONS) &&
197 llchdr != LLC_UI_HDR(LLCSAP_IP)) {
199 * XXX - assume 802.6 MAC header from Fore driver.
201 * Unfortunately, the above list doesn't check for
202 * all known SAPs, doesn't check for headers where
203 * the source and destination SAP aren't the same,
204 * and doesn't check for non-UI frames. It also
205 * runs the risk of an 802.6 MAC header that happens
206 * to begin with one of those values being
207 * incorrectly treated as an 802.2 header.
209 * So is that Fore driver still around? And, if so,
210 * is it still putting 802.6 MAC headers on ATM
211 * packets? If so, could it be changed to use a
212 * new DLT_IEEE802_6 value if we added it?
215 printf("%08x%08x %08x%08x ",
219 EXTRACT_32BITS(p+12));
225 atm_llc_print(p, length, caplen);
232 static struct tok msgtype2str[] = {
233 { CALL_PROCEED, "Call_proceeding" },
234 { CONNECT, "Connect" },
235 { CONNECT_ACK, "Connect_ack" },
237 { RELEASE, "Release" },
238 { RELEASE_DONE, "Release_complete" },
239 { RESTART, "Restart" },
240 { RESTART_ACK, "Restart_ack" },
241 { STATUS, "Status" },
242 { STATUS_ENQ, "Status_enquiry" },
243 { ADD_PARTY, "Add_party" },
244 { ADD_PARTY_ACK, "Add_party_ack" },
245 { ADD_PARTY_REJ, "Add_party_reject" },
246 { DROP_PARTY, "Drop_party" },
247 { DROP_PARTY_ACK, "Drop_party_ack" },
252 sig_print(const u_char *p, int caplen)
254 bpf_u_int32 call_ref;
256 if (caplen < PROTO_POS) {
260 if (p[PROTO_POS] == Q2931) {
262 * protocol:Q.2931 for User to Network Interface
263 * (UNI 3.1) signalling
266 if (caplen < MSG_TYPE_POS) {
271 tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));
274 * The call reference comes before the message type,
275 * so if we know we have the message type, which we
276 * do from the caplen test above, we also know we have
277 * the call reference.
279 call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
280 printf("CALL_REF:0x%06x", call_ref);
282 /* SCCOP with some unknown protocol atop it */
283 printf("SSCOP, proto %d ", p[PROTO_POS]);
288 * Print an ATM PDU (such as an AAL5 PDU).
291 atm_print(u_int vpi, u_int vci, u_int traftype, const u_char *p, u_int length,
295 printf("VPI:%u VCI:%u ", vpi, vci);
301 sig_print(p, caplen);
305 printf("broadcast sig: ");
308 case VCI_OAMF4SC: /* fall through */
310 oam_print(p, length, ATM_OAM_HEC);
319 snmp_print(p, length);
329 * Assumes traffic is LLC if unknown.
331 atm_llc_print(p, length, caplen);
335 lane_print(p, length, caplen);
340 struct 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];
348 struct oam_fm_ais_rdi_t {
349 u_int8_t failure_type;
350 u_int8_t failure_location[16];
355 oam_print (const u_char *p, u_int length, u_int hec) {
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;
362 const struct oam_fm_loopback_t *oam_fm_loopback;
363 const struct oam_fm_ais_rdi_t *oam_fm_ais_rdi;
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;
371 vpi = (cell_header>>20)&0xff;
372 vci = (cell_header>>4)&0xffff;
373 payload = (cell_header>>1)&0x7;
374 clp = cell_header&0x1;
376 printf("%s, vpi %u, vci %u, payload [ %s ], clp %u, length %u",
377 tok2str(oam_f_values, "OAM F5", vci),
379 tok2str(atm_pty_values, "Unknown", payload),
386 printf("\n\tcell-type %s (%u)",
387 tok2str(oam_celltype_values, "unknown", cell_type),
390 if (oam_functype_values[cell_type] == NULL)
391 printf(", func-type unknown (%u)", func_type);
393 printf(", func-type %s (%u)",
394 tok2str(oam_functype_values[cell_type],"none",func_type),
397 p += ATM_HDR_LEN_NOHEC + hec;
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,
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++) {
410 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->loopback_id[idx]));
413 printf("\n\tSource-ID ");
414 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->source_id); idx++) {
416 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->source_id[idx]));
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++) {
428 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_ais_rdi->failure_location[idx]));
433 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_CONTCHECK):
441 /* crc10 checksum verification */
442 cksum = EXTRACT_16BITS(p + OAM_CELLTYPE_FUNCTYPE_LEN + OAM_FUNCTION_SPECIFIC_LEN)
444 cksum_shouldbe = verify_crc10_cksum(0, p, OAM_PAYLOAD_LEN);
446 printf("\n\tcksum 0x%03x (%scorrect)",
448 cksum_shouldbe == 0 ? "" : "in");