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.
24 static const char rcsid[] _U_ =
25 "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.49 2007-10-22 19:37:51 guy Exp $ (LBL)";
32 #include <tcpdump-stdinc.h>
38 #include "interface.h"
40 #include "addrtoname.h"
41 #include "ethertype.h"
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
53 struct tok oam_f_values[] = {
54 { VCI_OAMF4SC, "OAM F4 (segment)" },
55 { VCI_OAMF4EC, "OAM F4 (end)" },
59 struct 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" },
70 #define OAM_CELLTYPE_FM 0x1
71 #define OAM_CELLTYPE_PM 0x2
72 #define OAM_CELLTYPE_AD 0x8
73 #define OAM_CELLTYPE_SM 0xf
75 struct 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" },
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
88 struct 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" },
96 struct tok oam_pm_functype_values[] = {
97 { 0x0, "Forward Monitoring" },
98 { 0x1, "Backward Reporting" },
99 { 0x2, "Monitoring and Reporting" },
103 struct tok oam_ad_functype_values[] = {
104 { 0x0, "Performance Monitoring" },
105 { 0x1, "Continuity Check" },
109 #define OAM_FM_LOOPBACK_INDICATOR_MASK 0x1
111 struct tok oam_fm_loopback_indicator_values[] = {
117 static const struct tok *oam_functype_values[16] = {
119 oam_fm_functype_values, /* 1 */
120 oam_pm_functype_values, /* 2 */
126 oam_ad_functype_values, /* 8 */
137 * Print an RFC 1483 LLC-encapsulated ATM frame.
140 atm_llc_print(const u_char *p, int length, int caplen)
142 u_short extracted_ethertype;
144 if (!llc_print(p, length, caplen, NULL, NULL,
145 &extracted_ethertype)) {
146 /* ether_type not known, print raw packet */
147 if (extracted_ethertype) {
149 etherproto_string(htons(extracted_ethertype)));
151 if (!suppress_default_print)
152 default_print(p, caplen);
157 * Given a SAP value, generate the LLC header value for a UI packet
158 * with that SAP as the source and destination SAP.
160 #define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03)
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.
169 atm_if_print(const struct pcap_pkthdr *h, const u_char *p)
171 u_int caplen = h->caplen;
172 u_int length = h->len;
181 /* Cisco Style NLPID ? */
185 isoclns_print(p+1, length-1, caplen-1);
190 * Extract the presumed LLC header into a variable, for quick
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.
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)) {
201 * XXX - assume 802.6 MAC header from Fore driver.
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.
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?
217 printf("%08x%08x %08x%08x ",
221 EXTRACT_32BITS(p+12));
227 atm_llc_print(p, length, caplen);
234 static struct tok msgtype2str[] = {
235 { CALL_PROCEED, "Call_proceeding" },
236 { CONNECT, "Connect" },
237 { CONNECT_ACK, "Connect_ack" },
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" },
254 sig_print(const u_char *p, int caplen)
256 bpf_u_int32 call_ref;
258 if (caplen < PROTO_POS) {
262 if (p[PROTO_POS] == Q2931) {
264 * protocol:Q.2931 for User to Network Interface
265 * (UNI 3.1) signalling
268 if (caplen < MSG_TYPE_POS) {
273 tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));
276 * The call reference comes before the message type,
277 * so if we know we have the message type, which we
278 * do from the caplen test above, we also know we have
279 * the call reference.
281 call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
282 printf("CALL_REF:0x%06x", call_ref);
284 /* SCCOP with some unknown protocol atop it */
285 printf("SSCOP, proto %d ", p[PROTO_POS]);
290 * Print an ATM PDU (such as an AAL5 PDU).
293 atm_print(u_int vpi, u_int vci, u_int traftype, const u_char *p, u_int length,
297 printf("VPI:%u VCI:%u ", vpi, vci);
303 sig_print(p, caplen);
307 printf("broadcast sig: ");
310 case VCI_OAMF4SC: /* fall through */
312 oam_print(p, length, ATM_OAM_HEC);
321 snmp_print(p, length);
331 * Assumes traffic is LLC if unknown.
333 atm_llc_print(p, length, caplen);
337 lane_print(p, length, caplen);
342 struct oam_fm_loopback_t {
343 u_int8_t loopback_indicator;
344 u_int8_t correlation_tag[4];
345 u_int8_t loopback_id[12];
346 u_int8_t source_id[12];
350 struct oam_fm_ais_rdi_t {
351 u_int8_t failure_type;
352 u_int8_t failure_location[16];
357 oam_print (const u_char *p, u_int length, u_int hec) {
359 u_int32_t cell_header;
360 u_int16_t vpi, vci, cksum, cksum_shouldbe, idx;
361 u_int8_t cell_type, func_type, payload, clp;
364 const struct oam_fm_loopback_t *oam_fm_loopback;
365 const struct oam_fm_ais_rdi_t *oam_fm_ais_rdi;
369 cell_header = EXTRACT_32BITS(p+hec);
370 cell_type = ((*(p+ATM_HDR_LEN_NOHEC+hec))>>4) & 0x0f;
371 func_type = (*(p+ATM_HDR_LEN_NOHEC+hec)) & 0x0f;
373 vpi = (cell_header>>20)&0xff;
374 vci = (cell_header>>4)&0xffff;
375 payload = (cell_header>>1)&0x7;
376 clp = cell_header&0x1;
378 printf("%s, vpi %u, vci %u, payload [ %s ], clp %u, length %u",
379 tok2str(oam_f_values, "OAM F5", vci),
381 tok2str(atm_pty_values, "Unknown", payload),
388 printf("\n\tcell-type %s (%u)",
389 tok2str(oam_celltype_values, "unknown", cell_type),
392 if (oam_functype_values[cell_type] == NULL)
393 printf(", func-type unknown (%u)", func_type);
395 printf(", func-type %s (%u)",
396 tok2str(oam_functype_values[cell_type],"none",func_type),
399 p += ATM_HDR_LEN_NOHEC + hec;
401 switch (cell_type << 4 | func_type) {
402 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_LOOPBACK):
403 oam_ptr.oam_fm_loopback = (const struct oam_fm_loopback_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN);
404 printf("\n\tLoopback-Indicator %s, Correlation-Tag 0x%08x",
405 tok2str(oam_fm_loopback_indicator_values,
407 oam_ptr.oam_fm_loopback->loopback_indicator & OAM_FM_LOOPBACK_INDICATOR_MASK),
408 EXTRACT_32BITS(&oam_ptr.oam_fm_loopback->correlation_tag));
409 printf("\n\tLocation-ID ");
410 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->loopback_id); idx++) {
412 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->loopback_id[idx]));
415 printf("\n\tSource-ID ");
416 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->source_id); idx++) {
418 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->source_id[idx]));
423 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_AIS):
424 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_RDI):
425 oam_ptr.oam_fm_ais_rdi = (const struct oam_fm_ais_rdi_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN);
426 printf("\n\tFailure-type 0x%02x", oam_ptr.oam_fm_ais_rdi->failure_type);
427 printf("\n\tLocation-ID ");
428 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_ais_rdi->failure_location); idx++) {
430 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_ais_rdi->failure_location[idx]));
435 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_CONTCHECK):
443 /* crc10 checksum verification */
444 cksum = EXTRACT_16BITS(p + OAM_CELLTYPE_FUNCTYPE_LEN + OAM_FUNCTION_SPECIFIC_LEN)
446 cksum_shouldbe = verify_crc10_cksum(0, p, OAM_PAYLOAD_LEN);
448 printf("\n\tcksum 0x%03x (%scorrect)",
450 cksum_shouldbe == 0 ? "" : "in");