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.
22 static const char rcsid
[] _U_
=
23 "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.38.2.6 2006/01/25 13:27:24 hannes Exp $ (LBL)";
30 #include <tcpdump-stdinc.h>
36 #include "interface.h"
38 #include "addrtoname.h"
39 #include "ethertype.h"
46 struct tok oam_f_values
[] = {
47 { OAMF4SC
, "OAM F4 (segment)" },
48 { OAMF4EC
, "OAM F4 (end)" },
52 struct tok oam_celltype_values
[] = {
53 { 0x1, "Fault Management" },
54 { 0x2, "Performance Management" },
55 { 0x8, "activate/deactivate" },
56 { 0xf, "System Management" },
60 struct tok oam_fm_functype_values
[] = {
63 { 0x4, "Continuity Check" },
68 struct tok oam_pm_functype_values
[] = {
69 { 0x0, "Forward Monitoring" },
70 { 0x1, "Backward Reporting" },
71 { 0x2, "Monitoring and Reporting" },
75 struct tok oam_ad_functype_values
[] = {
76 { 0x0, "Performance Monitoring" },
77 { 0x1, "Continuity Check" },
81 static const struct tok
*oam_functype_values
[16] = {
83 oam_fm_functype_values
, /* 1 */
84 oam_pm_functype_values
, /* 2 */
90 oam_ad_functype_values
, /* 8 */
101 * Print an RFC 1483 LLC-encapsulated ATM frame.
104 atm_llc_print(const u_char
*p
, int length
, int caplen
)
106 u_short extracted_ethertype
;
108 if (!llc_print(p
, length
, caplen
, NULL
, NULL
,
109 &extracted_ethertype
)) {
110 /* ether_type not known, print raw packet */
111 if (extracted_ethertype
) {
113 etherproto_string(htons(extracted_ethertype
)));
115 if (!suppress_default_print
)
116 default_print(p
, caplen
);
121 * Given a SAP value, generate the LLC header value for a UI packet
122 * with that SAP as the source and destination SAP.
124 #define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03)
127 * This is the top level routine of the printer. 'p' points
128 * to the LLC/SNAP header of the packet, 'h->ts' is the timestamp,
129 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
130 * is the number of bytes actually captured.
133 atm_if_print(const struct pcap_pkthdr
*h
, const u_char
*p
)
135 u_int caplen
= h
->caplen
;
136 u_int length
= h
->len
;
145 /* Cisco Style NLPID ? */
149 isoclns_print(p
+1, length
-1, caplen
-1);
154 * Extract the presumed LLC header into a variable, for quick
156 * Then check for a header that's neither a header for a SNAP
157 * packet nor an RFC 2684 routed NLPID-formatted PDU nor
158 * an 802.2-but-no-SNAP IP packet.
160 llchdr
= EXTRACT_24BITS(p
);
161 if (llchdr
!= LLC_UI_HDR(LLCSAP_SNAP
) &&
162 llchdr
!= LLC_UI_HDR(LLCSAP_ISONS
) &&
163 llchdr
!= LLC_UI_HDR(LLCSAP_IP
)) {
165 * XXX - assume 802.6 MAC header from Fore driver.
167 * Unfortunately, the above list doesn't check for
168 * all known SAPs, doesn't check for headers where
169 * the source and destination SAP aren't the same,
170 * and doesn't check for non-UI frames. It also
171 * runs the risk of an 802.6 MAC header that happens
172 * to begin with one of those values being
173 * incorrectly treated as an 802.2 header.
175 * So is that Fore driver still around? And, if so,
176 * is it still putting 802.6 MAC headers on ATM
177 * packets? If so, could it be changed to use a
178 * new DLT_IEEE802_6 value if we added it?
181 printf("%08x%08x %08x%08x ",
185 EXTRACT_32BITS(p
+12));
191 atm_llc_print(p
, length
, caplen
);
198 static struct tok msgtype2str
[] = {
199 { CALL_PROCEED
, "Call_proceeding" },
200 { CONNECT
, "Connect" },
201 { CONNECT_ACK
, "Connect_ack" },
203 { RELEASE
, "Release" },
204 { RELEASE_DONE
, "Release_complete" },
205 { RESTART
, "Restart" },
206 { RESTART_ACK
, "Restart_ack" },
207 { STATUS
, "Status" },
208 { STATUS_ENQ
, "Status_enquiry" },
209 { ADD_PARTY
, "Add_party" },
210 { ADD_PARTY_ACK
, "Add_party_ack" },
211 { ADD_PARTY_REJ
, "Add_party_reject" },
212 { DROP_PARTY
, "Drop_party" },
213 { DROP_PARTY_ACK
, "Drop_party_ack" },
218 sig_print(const u_char
*p
, int caplen
)
220 bpf_u_int32 call_ref
;
222 if (caplen
< PROTO_POS
) {
226 if (p
[PROTO_POS
] == Q2931
) {
228 * protocol:Q.2931 for User to Network Interface
229 * (UNI 3.1) signalling
232 if (caplen
< MSG_TYPE_POS
) {
237 tok2str(msgtype2str
, "msgtype#%d", p
[MSG_TYPE_POS
]));
239 if (caplen
< CALL_REF_POS
+3) {
243 call_ref
= EXTRACT_24BITS(&p
[CALL_REF_POS
]);
244 printf("CALL_REF:0x%06x", call_ref
);
246 /* SCCOP with some unknown protocol atop it */
247 printf("SSCOP, proto %d ", p
[PROTO_POS
]);
252 * Print an ATM PDU (such as an AAL5 PDU).
255 atm_print(u_int vpi
, u_int vci
, u_int traftype
, const u_char
*p
, u_int length
,
259 printf("VPI:%u VCI:%u ", vpi
, vci
);
265 sig_print(p
, caplen
);
269 printf("broadcast sig: ");
272 case OAMF4SC
: /* fall through */
274 oam_print(p
, length
, ATM_OAM_HEC
);
283 snmp_print(p
, length
);
293 * Assumes traffic is LLC if unknown.
295 atm_llc_print(p
, length
, caplen
);
299 lane_print(p
, length
, caplen
);
305 oam_print (const u_char
*p
, u_int length
, u_int hec
) {
307 u_int32_t cell_header
;
308 u_int16_t cell_type
, func_type
,vpi
,vci
,payload
,clp
;
310 cell_header
= EXTRACT_32BITS(p
+hec
);
311 cell_type
= ((*(p
+4+hec
))>>4) & 0x0f;
312 func_type
= *(p
+4+hec
) & 0x0f;
314 vpi
= (cell_header
>>20)&0xff;
315 vci
= (cell_header
>>4)&0xffff;
316 payload
= (cell_header
>>1)&0x7;
317 clp
= cell_header
&0x1;
319 printf("%s, vpi %u, vci %u, payload %u, clp %u, ",
320 tok2str(oam_f_values
, "OAM F5", vci
),
321 vpi
, vci
, payload
, clp
);
323 printf("cell-type %s (%u)",
324 tok2str(oam_celltype_values
, "unknown", cell_type
),
327 if (oam_functype_values
[cell_type
] == NULL
)
328 printf(", func-type unknown (%u)", func_type
);
330 printf(", func-type %s (%u)",
331 bittok2str(oam_functype_values
[cell_type
],"none",func_type
),
334 printf(", length %u",length
);