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)
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
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 1.38.2.2 2005/06/20 07:45:06 hannes Exp $ (LBL)";
32 #include <tcpdump-stdinc.h>
38 #include "interface.h"
40 #include "addrtoname.h"
41 #include "ethertype.h"
48 struct tok oam_celltype_values[] = {
49 { 0x1, "Fault Management" },
50 { 0x2, "Performance Management" },
51 { 0x8, "activate/deactivate" },
52 { 0xf, "System Management" },
56 struct tok oam_fm_functype_values[] = {
59 { 0x4, "Continuity Check" },
64 struct tok oam_pm_functype_values[] = {
65 { 0x0, "Forward Monitoring" },
66 { 0x1, "Backward Reporting" },
67 { 0x2, "Monitoring and Reporting" },
71 struct tok oam_ad_functype_values[] = {
72 { 0x0, "Performance Monitoring" },
73 { 0x1, "Continuity Check" },
77 static const struct tok *oam_functype_values[16] = {
79 oam_fm_functype_values, /* 1 */
80 oam_pm_functype_values, /* 2 */
86 oam_ad_functype_values, /* 8 */
97 * Print an RFC 1483 LLC-encapsulated ATM frame.
100 atm_llc_print(const u_char *p, int length, int caplen)
102 u_short extracted_ethertype;
104 if (!llc_print(p, length, caplen, NULL, NULL,
105 &extracted_ethertype)) {
106 /* ether_type not known, print raw packet */
107 if (extracted_ethertype) {
109 etherproto_string(htons(extracted_ethertype)));
111 if (!xflag && !qflag)
112 default_print(p, caplen);
117 * Given a SAP value, generate the LLC header value for a UI packet
118 * with that SAP as the source and destination SAP.
120 #define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03)
123 * This is the top level routine of the printer. 'p' points
124 * to the LLC/SNAP header of the packet, 'h->ts' is the timestamp,
125 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
126 * is the number of bytes actually captured.
129 atm_if_print(const struct pcap_pkthdr *h, const u_char *p)
131 u_int caplen = h->caplen;
132 u_int length = h->len;
141 * Extract the presumed LLC header into a variable, for quick
143 * Then check for a header that's neither a header for a SNAP
144 * packet nor an RFC 2684 routed NLPID-formatted PDU nor
145 * an 802.2-but-no-SNAP IP packet.
147 llchdr = EXTRACT_24BITS(p);
148 if (llchdr != LLC_UI_HDR(LLCSAP_SNAP) &&
149 llchdr != LLC_UI_HDR(LLCSAP_ISONS) &&
150 llchdr != LLC_UI_HDR(LLCSAP_IP)) {
152 * XXX - assume 802.6 MAC header from Fore driver.
154 * Unfortunately, the above list doesn't check for
155 * all known SAPs, doesn't check for headers where
156 * the source and destination SAP aren't the same,
157 * and doesn't check for non-UI frames. It also
158 * runs the risk of an 802.6 MAC header that happens
159 * to begin with one of those values being
160 * incorrectly treated as an 802.2 header.
162 * So is that Fore driver still around? And, if so,
163 * is it still putting 802.6 MAC headers on ATM
164 * packets? If so, could it be changed to use a
165 * new DLT_IEEE802_6 value if we added it?
168 printf("%08x%08x %08x%08x ",
172 EXTRACT_32BITS(p+12));
178 atm_llc_print(p, length, caplen);
185 static struct tok msgtype2str[] = {
186 { CALL_PROCEED, "Call_proceeding" },
187 { CONNECT, "Connect" },
188 { CONNECT_ACK, "Connect_ack" },
190 { RELEASE, "Release" },
191 { RELEASE_DONE, "Release_complete" },
192 { RESTART, "Restart" },
193 { RESTART_ACK, "Restart_ack" },
194 { STATUS, "Status" },
195 { STATUS_ENQ, "Status_enquiry" },
196 { ADD_PARTY, "Add_party" },
197 { ADD_PARTY_ACK, "Add_party_ack" },
198 { ADD_PARTY_REJ, "Add_party_reject" },
199 { DROP_PARTY, "Drop_party" },
200 { DROP_PARTY_ACK, "Drop_party_ack" },
205 sig_print(const u_char *p, int caplen)
207 bpf_u_int32 call_ref;
209 if (caplen < PROTO_POS) {
213 if (p[PROTO_POS] == Q2931) {
215 * protocol:Q.2931 for User to Network Interface
216 * (UNI 3.1) signalling
219 if (caplen < MSG_TYPE_POS) {
224 tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));
226 if (caplen < CALL_REF_POS+3) {
230 call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
231 printf("CALL_REF:0x%06x", call_ref);
233 /* SCCOP with some unknown protocol atop it */
234 printf("SSCOP, proto %d ", p[PROTO_POS]);
239 * Print an ATM PDU (such as an AAL5 PDU).
242 atm_print(u_int vpi, u_int vci, u_int traftype, const u_char *p, u_int length,
246 printf("VPI:%u VCI:%u ", vpi, vci);
252 sig_print(p, caplen);
256 printf("broadcast sig: ");
259 case OAMF4SC: /* fall through */
261 oam_print(p, length, ATM_OAM_HEC);
270 snmp_print(p, length);
280 * Assumes traffic is LLC if unknown.
282 atm_llc_print(p, length, caplen);
286 lane_print(p, length, caplen);
292 oam_print (const u_char *p, u_int length, u_int hec) {
294 u_int16_t cell_header, cell_type, func_type,vpi,vci,payload,clp;
296 cell_header = EXTRACT_32BITS(p);
297 cell_type = ((*(p+4+hec))>>4) & 0x0f;
298 func_type = *(p+4+hec) & 0x0f;
300 vpi = (cell_header>>20)&0xff;
301 vci = (cell_header>>4)&0xffff;
302 payload = (cell_header>>1)&0x7;
303 clp = cell_header&0x1;
307 printf("OAM F4 (segment), ");
310 printf("OAM F4 (end), ");
318 printf("vpi %u, vci %u, payload %u, clp %u, ",vpi,vci,payload,clp);
320 printf("cell-type %s (%u)",
321 tok2str(oam_celltype_values, "unknown", cell_type),
324 if (oam_functype_values[cell_type] == NULL)
325 printf(", func-type unknown (%u)", func_type);
327 printf(", func-type %s (%u)",
328 bittok2str(oam_functype_values[cell_type],"none",func_type),
331 printf(", length %u",length);