2 * Routines for LDP (RFC 3036) packet disassembly
4 * $Id: packet-ldp.c,v 1.43 2002/08/28 21:00:20 jmayer Exp $
6 * Copyright (c) November 2000 by Richard Sharpe <rsharpe@ns.aus.com>
8 * CRLDP (RFC3212) is now supported
9 * - (c) 2002 Michael Rozhavsky <mike[AT]tochna.technion.ac.il>
11 * Ethereal - Network traffic analyzer
12 * By Gerald Combs <gerald@ethereal.com>
13 * Copyright 1999 Gerald Combs
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version 2
18 * of the License, or (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
40 #include <epan/packet.h>
41 #include <epan/resolv.h>
45 #include "packet-frame.h"
47 #define TCP_PORT_LDP 646
48 #define UDP_PORT_LDP 646
50 void proto_reg_handoff_ldp(void);
52 static int proto_ldp = -1;
54 /* Delete the following if you do not use it, or add to it if you need */
55 static int hf_ldp_req = -1;
56 static int hf_ldp_rsp = -1;
57 static int hf_ldp_version = -1;
58 static int hf_ldp_pdu_len = -1;
59 static int hf_ldp_lsr = -1;
60 static int hf_ldp_ls_id = -1;
61 static int hf_ldp_msg_ubit = -1;
62 static int hf_ldp_msg_type = -1;
63 static int hf_ldp_msg_len = -1;
64 static int hf_ldp_msg_id = -1;
65 static int hf_ldp_msg_vendor_id = -1;
66 static int hf_ldp_msg_experiment_id = -1;
67 static int hf_ldp_tlv_value = -1;
68 static int hf_ldp_tlv_type = -1;
69 static int hf_ldp_tlv_unknown = -1;
70 static int hf_ldp_tlv_len = -1;
71 static int hf_ldp_tlv_val_hold = -1;
72 static int hf_ldp_tlv_val_target = -1;
73 static int hf_ldp_tlv_val_request = -1;
74 static int hf_ldp_tlv_val_res = -1;
75 static int hf_ldp_tlv_ipv4_taddr = -1;
76 static int hf_ldp_tlv_config_seqno = -1;
77 static int hf_ldp_tlv_ipv6_taddr = -1;
78 static int hf_ldp_tlv_fec_wc = -1;
79 static int hf_ldp_tlv_fec_af = -1;
80 static int hf_ldp_tlv_fec_len = -1;
81 static int hf_ldp_tlv_fec_pfval = -1;
82 static int hf_ldp_tlv_fec_hoval = -1;
83 static int hf_ldp_tlv_addrl_addr_family = -1;
84 static int hf_ldp_tlv_addrl_addr = -1;
85 static int hf_ldp_tlv_hc_value = -1;
86 static int hf_ldp_tlv_pv_lsrid = -1;
87 static int hf_ldp_tlv_generic_label = -1;
88 static int hf_ldp_tlv_atm_label_vbits = -1;
89 static int hf_ldp_tlv_atm_label_vpi = -1;
90 static int hf_ldp_tlv_atm_label_vci = -1;
91 static int hf_ldp_tlv_fr_label_len = -1;
92 static int hf_ldp_tlv_fr_label_dlci = -1;
93 static int hf_ldp_tlv_status_ebit = -1;
94 static int hf_ldp_tlv_status_fbit = -1;
95 static int hf_ldp_tlv_status_data = -1;
96 static int hf_ldp_tlv_status_msg_id = -1;
97 static int hf_ldp_tlv_status_msg_type = -1;
98 static int hf_ldp_tlv_extstatus_data = -1;
99 static int hf_ldp_tlv_returned_version = -1;
100 static int hf_ldp_tlv_returned_pdu_len = -1;
101 static int hf_ldp_tlv_returned_lsr = -1;
102 static int hf_ldp_tlv_returned_ls_id = -1;
103 static int hf_ldp_tlv_returned_msg_ubit = -1;
104 static int hf_ldp_tlv_returned_msg_type = -1;
105 static int hf_ldp_tlv_returned_msg_len = -1;
106 static int hf_ldp_tlv_returned_msg_id = -1;
107 static int hf_ldp_tlv_mac = -1;
108 static int hf_ldp_tlv_sess_ver = -1;
109 static int hf_ldp_tlv_sess_ka = -1;
110 static int hf_ldp_tlv_sess_advbit = -1;
111 static int hf_ldp_tlv_sess_ldetbit = -1;
112 static int hf_ldp_tlv_sess_pvlim = -1;
113 static int hf_ldp_tlv_sess_mxpdu = -1;
114 static int hf_ldp_tlv_sess_rxlsr = -1;
115 static int hf_ldp_tlv_sess_rxls = -1;
116 static int hf_ldp_tlv_sess_atm_merge = -1;
117 static int hf_ldp_tlv_sess_atm_lr = -1;
118 static int hf_ldp_tlv_sess_atm_dir = -1;
119 static int hf_ldp_tlv_sess_atm_minvpi = -1;
120 static int hf_ldp_tlv_sess_atm_maxvpi = -1;
121 static int hf_ldp_tlv_sess_atm_minvci = -1;
122 static int hf_ldp_tlv_sess_atm_maxvci = -1;
123 static int hf_ldp_tlv_sess_fr_merge = -1;
124 static int hf_ldp_tlv_sess_fr_lr = -1;
125 static int hf_ldp_tlv_sess_fr_dir = -1;
126 static int hf_ldp_tlv_sess_fr_len = -1;
127 static int hf_ldp_tlv_sess_fr_mindlci = -1;
128 static int hf_ldp_tlv_sess_fr_maxdlci = -1;
129 static int hf_ldp_tlv_lbl_req_msg_id = -1;
130 static int hf_ldp_tlv_vendor_id = -1;
131 static int hf_ldp_tlv_experiment_id = -1;
132 static int hf_ldp_tlv_fec_vc_controlword = -1;
133 static int hf_ldp_tlv_fec_vc_vctype = -1;
134 static int hf_ldp_tlv_fec_vc_infolength = -1;
135 static int hf_ldp_tlv_fec_vc_groupid = -1;
136 static int hf_ldp_tlv_fec_vc_vcid = -1;
137 static int hf_ldp_tlv_fec_vc_intparam_length = -1;
138 static int hf_ldp_tlv_fec_vc_intparam_mtu = -1;
139 static int hf_ldp_tlv_fec_vc_intparam_id = -1;
140 static int hf_ldp_tlv_fec_vc_intparam_maxcatmcells = -1;
141 static int hf_ldp_tlv_fec_vc_intparam_desc = -1;
142 static int hf_ldp_tlv_fec_vc_intparam_cembytes = -1;
143 static int hf_ldp_tlv_fec_vc_intparam_vpnid_oui = -1;
144 static int hf_ldp_tlv_fec_vc_intparam_vpnid_index = -1;
145 static int hf_ldp_tlv_lspid_act_flg = -1;
146 static int hf_ldp_tlv_lspid_cr_lsp = -1;
147 static int hf_ldp_tlv_lspid_ldpid = -1;
148 static int hf_ldp_tlv_er_hop_loose = -1;
149 static int hf_ldp_tlv_er_hop_prelen = -1;
150 static int hf_ldp_tlv_er_hop_prefix4 = -1;
151 static int hf_ldp_tlv_er_hop_prefix6 = -1;
152 static int hf_ldp_tlv_er_hop_as = -1;
153 static int hf_ldp_tlv_er_hop_cr_lsp = -1;
154 static int hf_ldp_tlv_er_hop_ldpid = -1;
155 static int hf_ldp_tlv_flags_reserv = -1;
156 static int hf_ldp_tlv_flags_weight = -1;
157 static int hf_ldp_tlv_flags_ebs = -1;
158 static int hf_ldp_tlv_flags_cbs = -1;
159 static int hf_ldp_tlv_flags_cdr = -1;
160 static int hf_ldp_tlv_flags_pbs = -1;
161 static int hf_ldp_tlv_flags_pdr = -1;
162 static int hf_ldp_tlv_frequency = -1;
163 static int hf_ldp_tlv_pdr = -1;
164 static int hf_ldp_tlv_pbs = -1;
165 static int hf_ldp_tlv_cdr = -1;
166 static int hf_ldp_tlv_cbs = -1;
167 static int hf_ldp_tlv_ebs = -1;
168 static int hf_ldp_tlv_weight = -1;
169 static int hf_ldp_tlv_set_prio = -1;
170 static int hf_ldp_tlv_hold_prio = -1;
171 static int hf_ldp_tlv_route_pinning = -1;
172 static int hf_ldp_tlv_resource_class = -1;
173 static int ett_ldp = -1;
174 static int ett_ldp_header = -1;
175 static int ett_ldp_ldpid = -1;
176 static int ett_ldp_message = -1;
177 static int ett_ldp_tlv = -1;
178 static int ett_ldp_tlv_val = -1;
179 static int ett_ldp_fec = -1;
180 static int ett_ldp_fec_vc_interfaceparam = -1;
182 static int tcp_port = 0;
183 static int udp_port = 0;
185 /* desegmentation of LDP over TCP */
186 static gboolean ldp_desegment = FALSE;
188 /* Add your functions here */
190 static int global_ldp_tcp_port = TCP_PORT_LDP;
191 static int global_ldp_udp_port = UDP_PORT_LDP;
194 * The following define all the TLV types I know about
197 #define TLV_FEC 0x0100
198 #define TLV_ADDRESS_LIST 0x0101
199 #define TLV_HOP_COUNT 0x0103
200 #define TLV_PATH_VECTOR 0x0104
201 #define TLV_GENERIC_LABEL 0x0200
202 #define TLV_ATM_LABEL 0x0201
203 #define TLV_FRAME_LABEL 0x0202
204 #define TLV_STATUS 0x0300
205 #define TLV_EXTENDED_STATUS 0x0301
206 #define TLV_RETURNED_PDU 0x0302
207 #define TLV_RETURNED_MESSAGE 0x0303
208 #define TLV_COMMON_HELLO_PARMS 0x0400
209 #define TLV_IPV4_TRANSPORT_ADDRESS 0x0401
210 #define TLV_CONFIGURATION_SEQNO 0x0402
211 #define TLV_IPV6_TRANSPORT_ADDRESS 0x0403
212 #define TLV_MAC 0x0404
213 #define TLV_COMMON_SESSION_PARMS 0x0500
214 #define TLV_ATM_SESSION_PARMS 0x0501
215 #define TLV_FRAME_RELAY_SESSION_PARMS 0x0502
216 #define TLV_LABEL_REQUEST_MESSAGE_ID 0x0600
217 #define TLV_ER 0x0800
218 #define TLV_ER_HOP_IPV4 0x0801
219 #define TLV_ER_HOP_IPV6 0x0802
220 #define TLV_ER_HOP_AS 0x0803
221 #define TLV_ER_HOP_LSPID 0x0804
222 #define TLV_TRAFFIC_PARAM 0x0810
223 #define TLV_PREEMPTION 0x0820
224 #define TLV_LSPID 0x0821
225 #define TLV_RESOURCE_CLASS 0x0822
226 #define TLV_ROUTE_PINNING 0x0823
228 #define TLV_VENDOR_PRIVATE_START 0x3E00
229 #define TLV_VENDOR_PRIVATE_END 0x3EFF
230 #define TLV_EXPERIMENTAL_START 0x3F00
231 #define TLV_EXPERIMENTAL_END 0x3FFF
233 static const value_string tlv_type_names[] = {
234 { TLV_FEC, "Forwarding Equivalence Classes TLV" },
235 { TLV_ADDRESS_LIST, "Address List TLV"},
236 { TLV_HOP_COUNT, "Hop Count TLV"},
237 { TLV_PATH_VECTOR, "Path Vector TLV"},
238 { TLV_GENERIC_LABEL, "Generic Label TLV"},
239 { TLV_ATM_LABEL, "ATM Label TLV"},
240 { TLV_FRAME_LABEL, "Frame Label TLV"},
241 { TLV_STATUS, "Status TLV"},
242 { TLV_EXTENDED_STATUS, "Extended Status TLV"},
243 { TLV_RETURNED_PDU, "Returned PDU TLV"},
244 { TLV_RETURNED_MESSAGE, "Returned Message TLV"},
245 { TLV_COMMON_HELLO_PARMS, "Common Hello Parameters TLV"},
246 { TLV_IPV4_TRANSPORT_ADDRESS, "IPv4 Transport Address TLV"},
247 { TLV_CONFIGURATION_SEQNO, "Configuration Sequence Number TLV"},
248 { TLV_IPV6_TRANSPORT_ADDRESS, "IPv6 Transport Address TLV"},
249 { TLV_MAC, "MAC TLV"},
250 { TLV_COMMON_SESSION_PARMS, "Common Session Parameters TLV"},
251 { TLV_ATM_SESSION_PARMS, "ATM Session Parameters TLV"},
252 { TLV_FRAME_RELAY_SESSION_PARMS, "Frame Relay Session Parameters TLV"},
253 { TLV_LABEL_REQUEST_MESSAGE_ID, "Label Request Message ID TLV"},
254 { TLV_LSPID, "LSP ID TLV"},
255 { TLV_ER, "Explicit route TLV"},
256 { TLV_ER_HOP_IPV4, "ER hop IPv4 prefix TLV"},
257 { TLV_ER_HOP_IPV6, "ER hop IPv6 prefix TLV"},
258 { TLV_ER_HOP_AS, "ER hop Autonomous system number prefix TLV"},
259 { TLV_TRAFFIC_PARAM, "Traffic parameters TLV"},
260 { TLV_PREEMPTION, "Preemption TLV"},
261 { TLV_ER_HOP_LSPID, "ER hop LSPID prefix TLV"},
262 { TLV_RESOURCE_CLASS, "Resource Class (Color) TLV"},
263 { TLV_ROUTE_PINNING, "Route Pinning TLV"},
264 { TLV_VENDOR_PRIVATE_START, "Vendor Private TLV"},
265 { TLV_EXPERIMENTAL_START, "Experimental TLV"},
270 * The following define all the message types I know about
273 #define LDP_NOTIFICATION 0x0001
274 #define LDP_HELLO 0x0100
275 #define LDP_INITIALIZATION 0x0200
276 #define LDP_KEEPALIVE 0x0201
277 #define LDP_ADDRESS 0x0300
278 #define LDP_ADDRESS_WITHDRAWAL 0x0301
279 #define LDP_LABEL_MAPPING 0x0400
280 #define LDP_LABEL_REQUEST 0x0401
281 #define LDP_LABEL_WITHDRAWAL 0x0402
282 #define LDP_LABEL_RELEASE 0x0403
283 #define LDP_LABEL_ABORT_REQUEST 0x0404
284 #define LDP_VENDOR_PRIVATE_START 0x3E00
285 #define LDP_VENDOR_PRIVATE_END 0x3EFF
286 #define LDP_EXPERIMENTAL_MESSAGE_START 0x3F00
287 #define LDP_EXPERIMENTAL_MESSAGE_END 0x3FFF
289 static const value_string ldp_message_types[] = {
290 {LDP_NOTIFICATION, "Notification Message"},
291 {LDP_HELLO, "Hello Message"},
292 {LDP_INITIALIZATION, "Initialization Message"},
293 {LDP_KEEPALIVE, "Keep Alive Message"},
294 {LDP_ADDRESS, "Address Message"},
295 {LDP_ADDRESS_WITHDRAWAL, "Address Withdrawal Message"},
296 {LDP_LABEL_MAPPING, "Label Mapping Message"},
297 {LDP_LABEL_REQUEST, "Label Request Message"},
298 {LDP_LABEL_WITHDRAWAL, "Label Withdrawal Message"},
299 {LDP_LABEL_RELEASE, "Label Release Message"},
300 {LDP_LABEL_ABORT_REQUEST, "Label Abort Request Message"},
301 {LDP_VENDOR_PRIVATE_START, "Vendor-Private Message"},
302 {LDP_EXPERIMENTAL_MESSAGE_START, "Experimental Message"},
306 static const true_false_string ldp_message_ubit = {
308 "Unknown bit not set"
311 static const true_false_string hello_targeted_vals = {
316 static const value_string tlv_unknown_vals[] = {
317 {0, "Known TLV, do not Forward"},
318 {1, "Known TLV, do Forward"},
319 {2, "Unknown TLV, do not Forward"},
320 {3, "Unknown TLV, do Forward"},
324 #define WILDCARD_FEC 1
328 #define VC_FEC 0x80 /* draft-martini-l2circuit-trans-mpls */
330 static const value_string fec_types[] = {
331 {WILDCARD_FEC, "Wildcard FEC"},
332 {PREFIX_FEC, "Prefix FEC"},
333 {HOST_FEC, "Host Address FEC"},
334 {CRLSP_FEC, "CR LSP FEC"},
335 {VC_FEC, "Virtual Circuit FEC"},
340 static const value_string fec_vc_types_vals[] = {
341 {0x0001, "Frame Relay DLCI"},
342 {0x0002, "ATM VCC transport"},
343 {0x0003, "ATM VPC transport"},
344 {0x0004, "Ethernet VLAN"},
345 {0x0005, "Ethernet"},
348 {0x0009, "ATM VCC cell transport"},
350 {0x000A, "ATM VPC cell transport"},
351 {0x000B, "Ethernet VPLS"},
356 #define FEC_VC_INTERFACEPARAM_MTU 0x01
357 #define FEC_VC_INTERFACEPARAM_MAXCATMCELLS 0x02
358 #define FEC_VC_INTERFACEPARAM_DESCRIPTION 0x03
359 #define FEC_VC_INTERFACEPARAM_CEMBYTES 0x04
360 #define FEC_VC_INTERFACEPARAM_CEMOPTIONS 0x05
361 #define FEC_VC_INTERFACEPARAM_VPNID 0x06
364 static const value_string fec_vc_interfaceparm[] = {
365 {FEC_VC_INTERFACEPARAM_MTU, "MTU"},
366 {FEC_VC_INTERFACEPARAM_MAXCATMCELLS, "Max Concatenated ATM cells"},
367 {FEC_VC_INTERFACEPARAM_DESCRIPTION, "Interface Description"},
368 {FEC_VC_INTERFACEPARAM_CEMBYTES, "CEM Payload Bytes"},
369 {FEC_VC_INTERFACEPARAM_CEMOPTIONS, "CEM options"},
370 {FEC_VC_INTERFACEPARAM_VPNID, "VPN Id"}
373 static const true_false_string fec_vc_cbit = {
374 "Contorl Word Present",
375 "Control Word NOT Present"
380 static const value_string tlv_atm_merge_vals[] = {
381 {0, "Merge not supported"},
382 {1, "VP merge supported"},
383 {2, "VC merge supported"},
384 {3, "VP & VC merge supported"},
388 static const value_string tlv_atm_vbits_vals[] = {
389 {0, "VPI & VCI Significant"},
390 {1, "Only VPI Significant"},
391 {2, "Only VCI Significant"},
392 {3, "VPI & VCI not Significant, nonsense"},
396 static const value_string tlv_fr_merge_vals[] = {
397 {0, "Merge not supported"},
398 {1, "Merge supported"},
404 static const value_string tlv_fr_len_vals[] = {
412 static const value_string ldp_act_flg_vals[] = {
413 {0, "indicates initial LSP setup"},
414 {1, "indicates modify LSP"},
418 static const value_string route_pinning_vals[] = {
419 {0, "route pinning is not requested"},
420 {1, "route pinning is requested"},
424 static const value_string ldp_loose_vals[] = {
430 static const true_false_string tlv_negotiable = {
435 static const value_string freq_values[] = {
442 static const true_false_string tlv_atm_dirbit = {
443 "Bidirectional capability",
444 "Unidirectional capability"
447 static const true_false_string hello_requested_vals = {
448 "Source requests periodic hellos",
449 "Source does not request periodic hellos"
452 static const true_false_string tlv_sess_advbit_vals = {
453 "Downstream On Demand proposed",
454 "Downstream Unsolicited proposed"
457 static const true_false_string tlv_sess_ldetbit_vals = {
458 "Loop Detection Enabled",
459 "Loop Detection Disabled"
462 static const true_false_string tlv_status_ebit = {
463 "Fatal Error Notification",
464 "Advisory Notification"
467 static const true_false_string tlv_status_fbit = {
468 "Notification should be Forwarded",
469 "Notification should NOT be Forwarded"
472 static const value_string tlv_status_data[] = {
474 {1, "Bad LDP Identifier"},
475 {2, "Bad Protocol Version"},
476 {3, "Bad PDU Length"},
477 {4, "Unknown Message Type"},
478 {5, "Bad Message Length"},
480 {7, "Bad TLV Length"},
481 {8, "Malformed TLV Value"},
482 {9, "Hold Timer Expired"},
484 {11, "Loop Detected"},
487 {14, "No Label Resources"},
488 {15, "Label Resources / Available"},
489 {16, "Session Rejected / No Hello"},
490 {17, "Session Rejected / Parameters Advertisement Mode"},
491 {18, "Session Rejected / Parameters Max PDU Length"},
492 {19, "Session Rejected / Parameters Label Range"},
493 {20, "KeepAlive Timer Expired"},
494 {21, "Label Request Aborted"},
495 {22, "Missing Message Parameters"},
496 {23, "Unsoported Address Family"},
497 {24, "Session Rejected / Bad KeepAlive Time"},
498 {25, "Internal Error"},
499 {0x01000001,"Unexpected Diff-Serv TLV"},
500 {0x01000002,"Unsupported PHB"},
501 {0x01000003,"Invalid EXP<->PHB Mapping"},
502 {0x01000004,"Unsupported PSC"},
503 {0x01000005,"Per-LSP context allocation failure"},
504 {0x04000001,"Bad Explicit Routing TLV Error"},
505 {0x04000002,"Bad Strict Node Error"},
506 {0x04000003,"Bad Strict Node Error"},
507 {0x04000004,"Bad Initial ER-Hop Error"},
508 {0x04000005,"Resource Unavailable"},
509 {0x04000006,"Traffic Parameters Unavailable"},
510 {0x04000007,"LSP Preempted"},
511 {0x04000008,"Modify Request Not Supported"},
512 {0x20000001,"Illegal C-Bit"},
513 {0x20000002,"Wrong C-Bit"},
517 /* Dissect FEC TLV */
520 dissect_tlv_fec(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
522 proto_tree *ti=NULL, *val_tree=NULL, *fec_tree=NULL, *vcintparam_tree=NULL;
523 guint16 family, ix=1, ax;
524 guint8 addr_size=0, *addr, implemented, prefix_len_octets, prefix_len, host_len, vc_len;
526 void *str_handler=NULL;
530 ti=proto_tree_add_text(tree, tvb, offset, rem, "FEC Elements");
531 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
532 if(val_tree == NULL) return;
535 switch (tvb_get_guint8(tvb, offset)) {
538 ti = proto_tree_add_text(val_tree, tvb, offset, 1, "FEC Element %u", ix);
539 fec_tree = proto_item_add_subtree(ti, ett_ldp_fec);
540 if(fec_tree == NULL) return;
541 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_wc,tvb, offset, 1, FALSE);
547 if( rem < 4 ){/*not enough*/
548 proto_tree_add_text(val_tree, tvb, offset, rem, "Error in FEC Element %u", ix);
551 family=tvb_get_ntohs(tvb, offset+1);
552 prefix_len=tvb_get_guint8(tvb, offset+3);
553 prefix_len_octets=(prefix_len+7)/8;
557 case AFNUM_INET: /*IPv4*/
559 str_handler=ip_to_str;
561 case AFNUM_INET6: /*IPv6*/
563 str_handler=ip6_to_str;
573 noctets= rem>4+prefix_len_octets?4+prefix_len_octets:rem;
574 proto_tree_add_text(val_tree, tvb, offset, noctets,"Support for Address Family not implemented");
580 if( rem < 4+MIN(addr_size, prefix_len_octets) ){
581 proto_tree_add_text(val_tree, tvb, offset, rem, "Error in FEC Element %u", ix);
585 /*Add a subtree for this*/
586 ti = proto_tree_add_text(val_tree, tvb, offset, 4+MIN(addr_size, prefix_len_octets), "FEC Element %u", ix);
587 fec_tree = proto_item_add_subtree(ti, ett_ldp_fec);
588 if(fec_tree == NULL) return;
589 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_wc, tvb, offset, 1, FALSE);
592 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_af, tvb, offset, 2, FALSE);
595 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_len, tvb, offset, 1, FALSE);
599 if( addr_size < prefix_len_octets) {
602 proto_tree_add_text(fec_tree, tvb, offset-1, 1, "Invalid prefix %u length for family %s", prefix_len, val_to_str(family, afn_vals, "Unknown Family"));
606 if( (addr=g_malloc0(addr_size)) == NULL ){
607 /*big big trouble, no mem or bad addr_size*/
608 fprintf(stderr, "packet-ldp: dissect_tlv_fec() malloc failed\n");
612 for(ax=0; ax+1 <= prefix_len_octets; ax++)
613 addr[ax]=tvb_get_guint8(tvb, offset+ax);
615 addr[ax-1] = addr[ax-1]&(0xFF<<(8-prefix_len%8));
617 str = (* (char* (*)(guint8 *))str_handler)(addr);
618 proto_tree_add_string_format(fec_tree, hf_ldp_tlv_fec_pfval, tvb, offset, prefix_len_octets, str, "Prefix: %s", str);
620 offset += prefix_len_octets;
621 rem -= 4+prefix_len_octets;
626 if( rem < 4 ){/*not enough*/
627 proto_tree_add_text(val_tree, tvb, offset, rem, "Error in FEC Element %u", ix);
630 family=tvb_get_ntohs(tvb, offset+1);
631 host_len=tvb_get_guint8(tvb, offset+3);
635 case AFNUM_INET: /*IPv4*/
637 str_handler=ip_to_str;
639 case AFNUM_INET6: /*IPv6*/
641 str_handler=ip6_to_str;
651 noctets= rem>4+host_len?4+host_len:rem;
652 proto_tree_add_text(val_tree, tvb, offset, noctets,"Support for Address Family not implemented");
658 if( rem < 4+addr_size ){
659 proto_tree_add_text(val_tree, tvb, offset, rem, "Error in FEC Element %u", ix);
663 /*Add a subtree for this*/
664 ti = proto_tree_add_text(val_tree, tvb, offset, 4+addr_size, "FEC Element %u", ix);
665 fec_tree = proto_item_add_subtree(ti, ett_ldp_fec);
666 if(fec_tree == NULL) return;
667 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_wc, tvb, offset, 1, FALSE);
670 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_af, tvb, offset, 2, FALSE);
673 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_len, tvb, offset, 1, FALSE);
677 if( addr_size != host_len) {
680 proto_tree_add_text(fec_tree, tvb, offset-1, 1, "Invalid address length %u length for family %s", host_len, val_to_str(family, afn_vals, "Unknown Family"));
684 if( (addr=g_malloc0(addr_size)) == NULL ){
685 /*big big xtrouble, no mem or bad addr_size*/
686 fprintf(stderr, "packet-ldp: dissect_tlv_fec() malloc failed\n");
690 for(ax=0; ax+1 <= host_len; ax++)
691 addr[ax]=tvb_get_guint8(tvb, offset+ax);
693 str = (* (char* (*)(guint8 *))str_handler)(addr);
694 proto_tree_add_string_format(fec_tree, hf_ldp_tlv_fec_hoval, tvb, offset, host_len, str, "Address: %s", str);
702 if( rem < 8 ){/*not enough bytes for a minimal VC_FEC*/
703 proto_tree_add_text(val_tree, tvb, offset, rem, "Error in FEC Element %u", ix);
706 vc_len = tvb_get_guint8 (tvb, offset+3);
709 ti = proto_tree_add_text(val_tree, tvb, offset, 8+vc_len, "FEC Element %u", ix);
710 fec_tree = proto_item_add_subtree(ti, ett_ldp_fec);
711 if(fec_tree == NULL) return;
712 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_wc, tvb, offset, 1, FALSE);
713 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_vc_controlword, tvb, offset+1, 1, FALSE);
714 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_vc_vctype, tvb, offset+1, 2, FALSE);
715 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_vc_infolength, tvb, offset+3,1,FALSE);
716 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_vc_groupid,tvb, offset +4, 4, FALSE);
720 if ( (vc_len > 3) && ( rem > 3 ) ) { /* there is enough room for vcid */
721 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_vc_vcid,tvb, offset, 4, FALSE);
722 proto_item_append_text (ti," VCID: %u",tvb_get_ntohl(tvb,offset));
725 proto_tree_add_text(val_tree,tvb,offset +4, 8 +vc_len, "VC FEC size format error");
732 while ( (vc_len > 1) && (rem > 1) ) { /* enough to include id and length */
733 intparam_len = tvb_get_guint8(tvb, offset+1);
734 ti = proto_tree_add_text(fec_tree, tvb, offset, intparam_len, "Interface Paramameter");
735 vcintparam_tree = proto_item_add_subtree(ti, ett_ldp_fec_vc_interfaceparam);
736 if(vcintparam_tree == NULL) return;
737 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_id,tvb,offset,1,FALSE);
738 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_length,tvb, offset+1, 1, FALSE);
739 if ( (vc_len -intparam_len) <0 && (rem -intparam_len) <0 ) { /* error condition */
740 proto_tree_add_text(vcintparam_tree, tvb, offset +2, MIN(vc_len,rem), "malformed data");
743 switch (tvb_get_guint8(tvb, offset)) {
744 case FEC_VC_INTERFACEPARAM_MTU:
745 proto_item_append_text(ti,": MTU %u", tvb_get_ntohs(tvb,offset+2));
746 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_mtu,tvb, offset+2, 2, FALSE);
748 case FEC_VC_INTERFACEPARAM_MAXCATMCELLS:
749 proto_item_append_text(ti,": Max ATM Concat Cells %u", tvb_get_ntohs(tvb,offset+2));
750 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_maxcatmcells,tvb, offset+2, 2, FALSE);
752 case FEC_VC_INTERFACEPARAM_DESCRIPTION:
753 proto_item_append_text(ti,": Description");
754 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_desc,tvb, offset+2, (intparam_len -2), FALSE);
756 case FEC_VC_INTERFACEPARAM_CEMBYTES:
757 proto_item_append_text(ti,": CEM Payload Bytes %u", tvb_get_ntohs(tvb,offset+2));
758 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_cembytes,tvb, offset+2, 2, FALSE);
760 case FEC_VC_INTERFACEPARAM_VPNID:
761 /* draft-lasserre-tls-mpls-00.txt */
762 proto_item_append_text(ti,": VPN Id");
763 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_vpnid_oui, tvb, offset+2, 3, FALSE);
764 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_vpnid_index, tvb, offset+5, 4, FALSE);
766 case FEC_VC_INTERFACEPARAM_CEMOPTIONS:
767 /* draft-malis-sonet-ces-mpls CEM options still undefined */
768 default: /* unknown */
769 proto_item_append_text(ti," unknown");
770 proto_tree_add_text(vcintparam_tree,tvb, offset+2, (intparam_len -2), "Unknown data");
775 vc_len -= intparam_len;
776 offset += intparam_len;
780 default: /* Unknown */
781 /* XXX - do all FEC's have a length that's a multiple of 4? */
782 /* Hmmm, don't think so. Will check. RJS. */
783 /* If we don't know its structure, we have to exit */
784 ti = proto_tree_add_text(val_tree, tvb, offset, 4, "FEC Element %u", ix);
785 fec_tree = proto_item_add_subtree(ti, ett_ldp_fec);
786 if(fec_tree == NULL) return;
787 proto_tree_add_text(fec_tree, tvb, offset, rem, "Unknown FEC TLV type");
795 /* Dissect Address List TLV */
798 dissect_tlv_address_list(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
800 proto_tree *ti = NULL, *val_tree = NULL;
802 guint8 addr_size, *addr;
808 proto_tree_add_text(tree, tvb, offset, rem,
809 "Error processing Address List TLV: length is %d, should be >= 2",
814 family=tvb_get_ntohs(tvb, offset);
815 proto_tree_add_item(tree, hf_ldp_tlv_addrl_addr_family, tvb,
818 case AFNUM_INET: /*IPv4*/
820 str_handler=ip_to_str;
822 case AFNUM_INET6: /*IPv6*/
824 str_handler=ip6_to_str;
827 proto_tree_add_text(tree, tvb, offset+2, rem-2,
828 "Support for Address Family not implemented");
833 ti=proto_tree_add_text(tree, tvb, offset, rem, "Addresses");
834 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
836 if(val_tree == NULL) return;
837 if( (addr=g_malloc(addr_size)) == NULL ){
839 fprintf(stderr, "packet-ldp: dissect_tlv_address_list() malloc failed\n");
843 for(ix=1; rem >= addr_size; ix++, offset += addr_size,
845 if( (tvb_memcpy(tvb, addr, offset, addr_size))
849 str = (* (char* (*)(guint8 *))str_handler)(addr);
850 proto_tree_add_string_format(val_tree,
851 hf_ldp_tlv_addrl_addr, tvb, offset, addr_size, str,
852 "Address %u: %s", ix, str);
855 proto_tree_add_text(val_tree, tvb, offset, rem,
856 "Error processing TLV: Extra data at end of address list");
861 /* Dissect Path Vector TLV */
864 dissect_tlv_path_vector(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
866 proto_tree *ti = NULL, *val_tree = NULL;
871 ti=proto_tree_add_text(tree, tvb, offset, rem, "LSR IDs");
872 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
874 if(val_tree == NULL) return;
876 for(ix=1; rem >= 4; ix++, offset += 4, rem -= 4) {
877 tvb_memcpy(tvb, (guint8 *)&addr, offset, 4);
878 proto_tree_add_ipv4_format(val_tree,
879 hf_ldp_tlv_pv_lsrid, tvb, offset, 4,
880 addr, "LSR Id %u: %s", ix,
881 ip_to_str((guint8 *)&addr));
884 proto_tree_add_text(val_tree, tvb, offset, rem,
885 "Error processing TLV: Extra data at end of path vector");
889 /* Dissect ATM Label TLV */
892 dissect_tlv_atm_label(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
894 proto_tree *ti = NULL, *val_tree = NULL;
899 proto_tree_add_text(tree, tvb, offset, rem,
900 "Error processing ATM Label TLV: length is %d, should be 4",
904 ti=proto_tree_add_text(tree, tvb, offset, rem, "ATM Label");
905 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
906 if(val_tree == NULL) return;
908 proto_tree_add_item(val_tree, hf_ldp_tlv_atm_label_vbits, tvb, offset, 1, FALSE);
910 id=tvb_get_ntohs(tvb, offset)&0x0FFF;
911 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_atm_label_vpi, tvb, offset, 2, id, "VPI: %u", id);
913 id=tvb_get_ntohs(tvb, offset+2);
914 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_atm_label_vci, tvb, offset+2, 2, id, "VCI: %u", id);
918 /* Dissect FRAME RELAY Label TLV */
921 dissect_tlv_frame_label(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
923 proto_tree *ti = NULL, *val_tree = NULL;
929 proto_tree_add_text(tree, tvb, offset, rem,
930 "Error processing Frame Relay Label TLV: length is %d, should be 4",
934 ti=proto_tree_add_text(tree, tvb, offset, rem, "Frame Relay Label");
935 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
936 if(val_tree == NULL) return;
938 len=(guint8)(tvb_get_ntohs(tvb, offset)>>7) & 0x03;
939 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_fr_label_len, tvb, offset, 2, len, "Number of DLCI bits: %s (%u)", val_to_str(len, tlv_fr_len_vals, "Unknown Length"), len);
941 id=tvb_get_ntoh24(tvb, offset+1)&0x7FFFFF;
942 proto_tree_add_uint_format(val_tree,
943 hf_ldp_tlv_fr_label_dlci, tvb, offset+1, 3, id, "DLCI: %u", id);
947 /* Dissect STATUS TLV */
950 dissect_tlv_status(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
952 proto_tree *ti = NULL, *val_tree = NULL;
957 proto_tree_add_text(tree, tvb, offset, rem,
958 "Error processing Status TLV: length is %d, should be 10",
963 ti=proto_tree_add_text(tree, tvb, offset, rem, "Status");
964 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
965 if(val_tree == NULL) return;
967 proto_tree_add_item(val_tree, hf_ldp_tlv_status_ebit, tvb, offset, 1, FALSE);
968 proto_tree_add_item(val_tree, hf_ldp_tlv_status_fbit, tvb, offset, 1, FALSE);
970 data=tvb_get_ntohl(tvb, offset)&0x3FFFFFFF;
971 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_status_data, tvb, offset, 4, data, "Status Data: %s (0x%X)", val_to_str(data, tlv_status_data, "Unknown Status Data"), data);
973 proto_tree_add_item(val_tree, hf_ldp_tlv_status_msg_id, tvb, offset+4, 4, FALSE);
974 proto_tree_add_item(val_tree, hf_ldp_tlv_status_msg_type, tvb, offset+8, 2, FALSE);
978 /* Dissect Returned PDU TLV */
981 dissect_tlv_returned_pdu(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
983 proto_tree *ti = NULL, *val_tree = NULL;
987 proto_tree_add_text(tree, tvb, offset, rem,
988 "Error processing Returned PDU TLV: length is %d, should be >= 10",
992 ti=proto_tree_add_text(tree, tvb, offset, rem, "Returned PDU");
993 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
994 if(val_tree == NULL) return;
996 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_version, tvb, offset, 2, FALSE);
997 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_pdu_len, tvb, offset+2, 2, FALSE);
998 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_lsr, tvb, offset+4, 4, FALSE);
999 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_ls_id, tvb, offset+8, 2, FALSE);
1004 /*XXX - dissect returned pdu data*/
1005 proto_tree_add_text(val_tree, tvb, offset, rem, "Returned PDU Data");
1010 /* Dissect Returned MESSAGE TLV */
1013 dissect_tlv_returned_message(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1015 proto_tree *ti = NULL, *val_tree = NULL;
1020 proto_tree_add_text(tree, tvb, offset, rem,
1021 "Error processing Returned Message TLV: length is %d, should be >= 4",
1025 ti=proto_tree_add_text(tree, tvb, offset, rem, "Returned Message");
1026 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
1027 if(val_tree == NULL) return;
1029 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_msg_ubit, tvb, offset, 1, FALSE);
1031 type=tvb_get_ntohs(tvb, offset)&0x7FFF;
1032 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_returned_msg_type, tvb, offset, 2, type, "Message Type: %s (0x%X)", val_to_str(type, ldp_message_types,"Unknown Message Type"), type);
1034 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_msg_len, tvb, offset+2, 2, FALSE);
1038 if( rem >= 4 ) { /*have msg_id*/
1039 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_msg_id, tvb, offset, 4, FALSE);
1045 /*XXX - dissect returned msg parameters*/
1046 proto_tree_add_text(val_tree, tvb, offset, rem, "Returned Message Parameters");
1051 /* Dissect the common hello params */
1055 dissect_tlv_common_hello_parms(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1057 dissect_tlv_common_hello_parms(tvbuff_t *tvb, guint offset, proto_tree *tree)
1061 proto_tree *ti = NULL;
1063 proto_tree *val_tree = NULL;
1067 ti = proto_tree_add_item(tree, hf_ldp_tlv_value, tvb, offset, rem, FALSE);
1068 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1069 if(val_tree == NULL) return;
1073 proto_tree_add_item(val_tree, hf_ldp_tlv_val_hold, tvb, offset, 2, FALSE);
1074 proto_tree_add_item(val_tree, hf_ldp_tlv_val_target, tvb, offset + 2, 2, FALSE);
1075 proto_tree_add_item(val_tree, hf_ldp_tlv_val_request, tvb, offset + 2, 2, FALSE);
1076 proto_tree_add_item(val_tree, hf_ldp_tlv_val_res, tvb, offset + 2, 2, FALSE);
1080 /* Dissect MAC TLV */
1083 dissect_tlv_mac(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1085 proto_tree *ti = NULL, *val_tree = NULL;
1090 ti=proto_tree_add_text(tree, tvb, offset, rem, "MAC addresses");
1091 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
1093 if(val_tree == NULL) return;
1095 for(ix=1; rem >= 6; ix++, offset += 6, rem -= 6) {
1096 mac = tvb_get_ptr(tvb, offset, 6);
1097 proto_tree_add_ether(val_tree,
1098 hf_ldp_tlv_mac, tvb, offset, 6, mac);
1101 proto_tree_add_text(val_tree, tvb, offset, rem,
1102 "Error processing TLV: Extra data at end of path vector");
1108 /* Dissect the common session params */
1111 dissect_tlv_common_session_parms(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1113 proto_tree *ti = NULL, *val_tree = NULL;
1116 if( rem != 14) { /*length of Comm Sess Parms tlv*/
1117 proto_tree_add_text(tree, tvb, offset, rem,
1118 "Error processing Common Session Parameters TLV: length is %d, should be 14",
1122 ti = proto_tree_add_text(tree, tvb, offset, rem, "Parameters");
1123 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1125 if(val_tree != NULL) {
1126 /*Protocol Version*/
1127 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_ver, tvb,offset, 2, FALSE);
1130 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_ka, tvb,offset + 2, 2, FALSE);
1133 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_advbit,tvb, offset + 4, 1, FALSE);
1136 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_ldetbit,tvb, offset + 4, 1, FALSE);
1138 /*Path Vector Limit*/
1139 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_pvlim,tvb, offset + 5, 1, FALSE);
1142 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_mxpdu,tvb, offset + 6, 2, FALSE);
1145 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_rxlsr,tvb, offset + 8, 4, FALSE);
1148 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_rxls,tvb, offset + 12, 2, FALSE);
1153 /* Dissect the atm session params */
1156 dissect_tlv_atm_session_parms(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1158 proto_tree *ti = NULL, *val_tree = NULL, *lbl_tree = NULL;
1164 proto_tree_add_text(tree, tvb, offset, rem,
1165 "Error processing ATM Parameters TLV: length is %d, should be >= 4",
1170 ti = proto_tree_add_text(tree, tvb, offset, rem,"ATM Parameters");
1171 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1173 if(val_tree != NULL) {
1174 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_atm_merge,tvb, offset, 1, FALSE);
1176 /*get the number of label ranges*/
1177 numlr=(tvb_get_guint8(tvb, offset)>>2) & 0x0F;
1178 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_sess_atm_lr,
1179 tvb, offset, 1, numlr, "Number of Label Range components: %u",
1182 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_atm_dir,tvb, offset, 1, FALSE);
1184 /*move into range components*/
1187 ti = proto_tree_add_text(val_tree, tvb, offset, rem,"ATM Label Range Components");
1190 val_tree=proto_item_add_subtree(ti,ett_ldp_tlv_val);
1191 if( ! val_tree ) return;
1193 /*now dissect ranges*/
1194 for(ix=1; numlr > 0 && rem >= 8; ix++, rem-=8, numlr--) {
1195 ti=proto_tree_add_text(val_tree, tvb, offset, 8,
1196 "ATM Label Range Component %u", ix);
1197 lbl_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
1199 if( lbl_tree == NULL ) break;
1201 id=tvb_get_ntohs(tvb, offset)&0x0FFF;
1202 proto_tree_add_uint_format(lbl_tree,
1203 hf_ldp_tlv_sess_atm_minvpi,
1205 id, "Minimum VPI: %u", id);
1206 id=tvb_get_ntohs(tvb, offset+4)&0x0FFF;
1207 proto_tree_add_uint_format(lbl_tree,
1208 hf_ldp_tlv_sess_atm_maxvpi,
1209 tvb, (offset+4), 2, id,
1210 "Maximum VPI: %u", id);
1212 id=tvb_get_ntohs(tvb, offset+2);
1213 proto_tree_add_uint_format(lbl_tree,
1214 hf_ldp_tlv_sess_atm_minvci,
1216 id, "Minimum VCI: %u", id);
1217 id=tvb_get_ntohs(tvb, offset+6);
1218 proto_tree_add_uint_format(lbl_tree,
1219 hf_ldp_tlv_sess_atm_maxvci,
1221 id, "Maximum VCI: %u", id);
1226 proto_tree_add_text(val_tree, tvb, offset, rem,
1227 "Error processing TLV: Extra data at end of TLV");
1232 /* Dissect the frame relay session params */
1235 dissect_tlv_frame_relay_session_parms(tvbuff_t *tvb, guint offset,proto_tree *tree, int rem)
1237 proto_tree *ti = NULL, *val_tree = NULL, *lbl_tree = NULL;
1238 guint8 numlr, ix, len;
1243 proto_tree_add_text(tree, tvb, offset, rem,
1244 "Error processing Frame Relay Parameters TLV: length is %d, should be >= 4",
1249 ti = proto_tree_add_text(tree, tvb, offset, rem,
1250 "Frame Relay Parameters");
1251 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1253 if(val_tree != NULL) {
1254 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_fr_merge,
1255 tvb, offset, 1, FALSE);
1257 /*get the number of label ranges*/
1258 numlr=(tvb_get_guint8(tvb, offset)>>2) & 0x0F;
1259 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_sess_fr_lr,
1260 tvb, offset, 1, numlr, "Number of Label Range components: %u",
1263 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_fr_dir,
1264 tvb, offset, 1, FALSE);
1266 /*move into range components*/
1269 ti = proto_tree_add_text(val_tree, tvb, offset, rem,
1270 "Frame Relay Label Range Components");
1273 val_tree=proto_item_add_subtree(ti,
1275 if( ! val_tree ) return;
1278 /*now dissect ranges*/
1279 for(ix=1; numlr > 0 && rem >= 8; ix++, rem-=8, numlr--) {
1280 ti=proto_tree_add_text(val_tree, tvb, offset, 8,
1281 "Frame Relay Label Range Component %u", ix);
1282 lbl_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
1284 if( lbl_tree == NULL ) break;
1286 len=(guint8)(tvb_get_ntohs(tvb, offset)>>7) & 0x03;
1287 proto_tree_add_uint_format(lbl_tree, hf_ldp_tlv_sess_fr_len, tvb, offset, 2, len, "Number of DLCI bits: %s (%u)", val_to_str(len, tlv_fr_len_vals, "Unknown Length"), len);
1289 id=tvb_get_ntoh24(tvb, offset+1)&0x7FFFFF;
1290 proto_tree_add_uint_format(lbl_tree,
1291 hf_ldp_tlv_sess_fr_mindlci, tvb, offset+1, 3, id, "Minimum DLCI %u", id);
1292 id=tvb_get_ntoh24(tvb, offset+5)&0x7FFFFF;
1293 proto_tree_add_uint_format(lbl_tree,
1294 hf_ldp_tlv_sess_fr_maxdlci, tvb, offset+5, 3, id, "Maximum DLCI %u", id);
1300 proto_tree_add_text(val_tree, tvb, offset, rem,
1301 "Error processing TLV: Extra data at end of TLV");
1308 dissect_tlv_lspid(tvbuff_t *tvb, guint offset,proto_tree *tree, int rem)
1310 proto_tree *ti = NULL, *val_tree = NULL;
1314 proto_tree_add_text(tree, tvb, offset, rem,
1315 "Error processing LSP ID TLV: length is %d, should be 8",
1320 ti = proto_tree_add_text(tree, tvb, offset, rem,
1322 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1324 if(val_tree != NULL) {
1325 proto_tree_add_item(val_tree, hf_ldp_tlv_lspid_act_flg,
1326 tvb, offset, 2, FALSE);
1328 proto_tree_add_item(val_tree, hf_ldp_tlv_lspid_cr_lsp,
1329 tvb, offset, 2, FALSE);
1331 proto_tree_add_item(val_tree, hf_ldp_tlv_lspid_ldpid,
1332 tvb, offset, 4, FALSE);
1338 dissect_tlv_er_hop_ipv4(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1340 proto_tree *ti = NULL, *val_tree = NULL;
1345 proto_tree_add_text(tree, tvb, offset, rem,
1346 "Error processing ER HOP IPv4 TLV: length is %d, should be 8",
1350 ti = proto_tree_add_text(tree, tvb, offset, rem, "ER HOP IPv4");
1351 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1353 if(val_tree != NULL) {
1354 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_loose,
1355 tvb, offset, 3, FALSE);
1357 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_prelen,
1358 tvb, offset, 1, FALSE);
1360 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_prefix4,
1361 tvb, offset, 4, FALSE);
1367 dissect_tlv_er_hop_ipv6(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1369 proto_tree *ti = NULL, *val_tree = NULL;
1373 proto_tree_add_text(tree, tvb, offset, rem,
1374 "Error processing ER HOP IPv6 TLV: length is %d, should be 20",
1378 ti = proto_tree_add_text(tree, tvb, offset, rem, "ER HOP IPv6");
1379 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1381 if(val_tree != NULL) {
1382 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_loose,
1383 tvb, offset, 3, FALSE);
1385 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_prelen,
1386 tvb, offset, 1, FALSE);
1388 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_prefix6,
1389 tvb, offset, 16, FALSE);
1395 dissect_tlv_er_hop_as(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1397 proto_tree *ti = NULL, *val_tree = NULL;
1401 proto_tree_add_text(tree, tvb, offset, rem,
1402 "Error processing ER HOP AS TLV: length is %d, should be 4",
1406 ti = proto_tree_add_text(tree, tvb, offset, rem, "ER HOP AS");
1407 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1409 if(val_tree != NULL) {
1410 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_loose,
1411 tvb, offset, 2, FALSE);
1413 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_as,
1414 tvb, offset, 2, FALSE);
1420 dissect_tlv_er_hop_lspid(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1422 proto_tree *ti = NULL, *val_tree = NULL;
1426 proto_tree_add_text(tree, tvb, offset, rem,
1427 "Error processing ER HOP LSPID TLV: length is %d, should be 8",
1431 ti = proto_tree_add_text(tree, tvb, offset, rem, "ER HOP LSPID");
1432 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1434 if(val_tree != NULL) {
1435 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_loose,
1436 tvb, offset, 2, FALSE);
1438 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_cr_lsp,
1439 tvb, offset, 2, FALSE);
1441 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_ldpid,
1442 tvb, offset, 4, FALSE);
1448 dissect_tlv_traffic(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1450 proto_tree *ti = NULL, *val_tree = NULL;
1457 proto_tree_add_text(tree, tvb, offset, rem,
1458 "Error processing Traffic Parameters TLV: length is %d, should be 24",
1462 ti = proto_tree_add_text(tree, tvb, offset, rem, "Traffic parameters");
1463 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1465 if(val_tree != NULL) {
1467 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_reserv, tvb, offset, 1, FALSE);
1468 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_weight, tvb, offset, 1, FALSE);
1469 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_ebs, tvb, offset, 1, FALSE);
1470 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_cbs, tvb, offset, 1, FALSE);
1471 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_cdr, tvb, offset, 1, FALSE);
1472 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_pbs, tvb, offset, 1, FALSE);
1473 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_pdr, tvb, offset, 1, FALSE);
1477 proto_tree_add_item(val_tree, hf_ldp_tlv_frequency, tvb, offset, 1, FALSE);
1484 pi = proto_tree_add_item(val_tree, hf_ldp_tlv_weight, tvb, offset, 1, FALSE);
1485 val_8 = tvb_get_guint8(tvb, offset);
1487 proto_item_set_text(pi, "Weight: Not applicable");
1491 val_f = tvb_get_ntohieee_float (tvb, offset);
1492 proto_tree_add_double_format(val_tree, hf_ldp_tlv_pdr, tvb, offset,
1493 4, val_f, "PDR: %.10g Bps", val_f);
1496 val_f = tvb_get_ntohieee_float (tvb, offset);
1497 proto_tree_add_double_format(val_tree, hf_ldp_tlv_pbs, tvb, offset,
1498 4, val_f, "PBS: %.10g Bytes", val_f);
1502 val_f = tvb_get_ntohieee_float (tvb, offset);
1503 proto_tree_add_double_format(val_tree, hf_ldp_tlv_cdr, tvb, offset,
1504 4, val_f, "CDR: %.10g Bps", val_f);
1508 val_f = tvb_get_ntohieee_float (tvb, offset);
1509 proto_tree_add_double_format(val_tree, hf_ldp_tlv_cbs, tvb, offset,
1510 4, val_f, "CBS: %.10g Bytes", val_f);
1514 val_f = tvb_get_ntohieee_float (tvb, offset);
1515 proto_tree_add_double_format(val_tree, hf_ldp_tlv_ebs, tvb, offset,
1516 4, val_f, "EBS: %.10g Bytes", val_f);
1523 dissect_tlv_route_pinning(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1525 proto_tree *ti = NULL, *val_tree = NULL;
1529 proto_tree_add_text(tree, tvb, offset, rem,
1530 "Error processing Route Pinning TLV: length is %d, should be 4",
1534 ti = proto_tree_add_text(tree, tvb, offset, rem, "Route Pinning");
1535 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1537 if(val_tree != NULL) {
1538 proto_tree_add_item(val_tree, hf_ldp_tlv_route_pinning,
1539 tvb, offset, 4, FALSE);
1546 dissect_tlv_resource_class(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1548 proto_tree *ti = NULL, *val_tree = NULL;
1552 proto_tree_add_text(tree, tvb, offset, rem,
1553 "Error processing Resource Class TLV: length is %d, should be 4",
1557 ti = proto_tree_add_text(tree, tvb, offset, rem, "Resource Class");
1558 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1560 if(val_tree != NULL) {
1561 proto_tree_add_item(val_tree, hf_ldp_tlv_resource_class,
1562 tvb, offset, 4, FALSE);
1569 dissect_tlv_preemption(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1571 proto_tree *ti = NULL, *val_tree = NULL;
1575 proto_tree_add_text(tree, tvb, offset, rem,
1576 "Error processing Preemption TLV: length is %d, should be 4",
1580 ti = proto_tree_add_text(tree, tvb, offset, rem, "Preemption");
1581 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1583 if(val_tree != NULL) {
1584 proto_tree_add_item(val_tree, hf_ldp_tlv_set_prio,
1585 tvb, offset, 1, FALSE);
1587 proto_tree_add_item(val_tree, hf_ldp_tlv_hold_prio,
1588 tvb, offset, 1, FALSE);
1594 dissect_tlv(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem);
1597 dissect_tlv_er(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1599 proto_tree *ti = NULL, *val_tree = NULL;
1603 ti = proto_tree_add_text(tree, tvb, offset, rem, "Explicit route");
1604 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1606 if(val_tree != NULL) {
1609 len = dissect_tlv (tvb, offset, val_tree, rem);
1618 /* Dissect a TLV and return the number of bytes consumed ... */
1621 dissect_tlv(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1623 guint16 type, typebak;
1625 proto_tree *ti = NULL, *tlv_tree = NULL;
1627 length=tvb_reported_length_remaining(tvb, offset);
1628 rem=MIN(rem, length);
1630 if( rem < 4 ) {/*chk for minimum header*/
1632 proto_tree_add_text(tree, tvb, offset, rem,
1633 "Error processing TLV: length is %d, should be >= 4",
1637 type = tvb_get_ntohs(tvb, offset) & 0x3FFF;
1639 length = tvb_get_ntohs(tvb, offset + 2),
1640 rem -= 4; /*do not count header*/
1641 length = MIN(length, rem); /* Don't go haywire if a problem ... */
1644 /*chk for vendor-private*/
1645 if(type>=TLV_VENDOR_PRIVATE_START && type<=TLV_VENDOR_PRIVATE_END){
1646 typebak=type; /*keep type*/
1647 type=TLV_VENDOR_PRIVATE_START;
1649 /*chk for experimental*/
1650 } else if(type>=TLV_EXPERIMENTAL_START && type<=TLV_EXPERIMENTAL_END){
1651 typebak=type; /*keep type*/
1652 type=TLV_EXPERIMENTAL_START;
1655 ti = proto_tree_add_text(tree, tvb, offset, length + 4, "%s",
1656 val_to_str(type, tlv_type_names, "Unknown TLV type (0x%04X)"));
1657 tlv_tree = proto_item_add_subtree(ti, ett_ldp_tlv);
1658 if(tlv_tree == NULL) return length+4;
1660 proto_tree_add_item(tlv_tree, hf_ldp_tlv_unknown, tvb, offset, 1, FALSE);
1662 proto_tree_add_uint_format(tlv_tree, hf_ldp_tlv_type, tvb, offset, 2, type, "TLV Type: %s (0x%X)", val_to_str(type, tlv_type_names, "Unknown TLV type"), type );
1664 proto_tree_add_item(tlv_tree, hf_ldp_tlv_len, tvb, offset + 2, 2, FALSE);
1669 dissect_tlv_fec(tvb, offset + 4, tlv_tree, length);
1672 case TLV_ADDRESS_LIST:
1673 dissect_tlv_address_list(tvb, offset + 4, tlv_tree, length);
1677 if( length != 1 ) /*error, only one byte*/
1678 proto_tree_add_text(tlv_tree, tvb, offset + 4,length,
1679 "Error processing Hop Count TLV: length is %d, should be 1",
1682 proto_tree_add_item(tlv_tree, hf_ldp_tlv_hc_value, tvb,offset + 4, length, FALSE);
1685 case TLV_PATH_VECTOR:
1686 dissect_tlv_path_vector(tvb, offset + 4, tlv_tree, length);
1689 case TLV_GENERIC_LABEL:
1690 if( length != 4 ) /*error, need only label*/
1691 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1692 "Error processing Generic Label TLV: length is %d, should be 4",
1695 guint32 label=tvb_get_ntohl(tvb, offset+4) & 0x000FFFFF;
1697 proto_tree_add_uint_format(tlv_tree, hf_ldp_tlv_generic_label,
1698 tvb, offset+4, length, label, "Generic Label: %u", label);
1703 dissect_tlv_atm_label(tvb, offset + 4, tlv_tree, length);
1706 case TLV_FRAME_LABEL:
1707 dissect_tlv_frame_label(tvb, offset + 4, tlv_tree, length);
1711 dissect_tlv_status(tvb, offset + 4, tlv_tree, length);
1714 case TLV_EXTENDED_STATUS:
1715 if( length != 4 ) /*error, need only status_code(guint32)*/
1716 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1717 "Error processing Extended Status TLV: length is %d, should be 4",
1720 proto_tree_add_item(tlv_tree, hf_ldp_tlv_extstatus_data, tvb, offset + 4, length, FALSE);
1724 case TLV_RETURNED_PDU:
1725 dissect_tlv_returned_pdu(tvb, offset + 4, tlv_tree, length);
1728 case TLV_RETURNED_MESSAGE:
1729 dissect_tlv_returned_message(tvb, offset + 4, tlv_tree, length);
1732 case TLV_COMMON_HELLO_PARMS:
1734 dissect_tlv_common_hello_parms(tvb, offset + 4, tlv_tree, length);
1736 dissect_tlv_common_hello_parms(tvb, offset + 4, tlv_tree);
1740 case TLV_IPV4_TRANSPORT_ADDRESS:
1741 if( length != 4 ) /*error, need only ipv4*/
1742 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1743 "Error processing IPv4 Transport Address TLV: length is %d, should be 4",
1746 proto_tree_add_item(tlv_tree, hf_ldp_tlv_ipv4_taddr, tvb, offset + 4, 4, FALSE);
1750 case TLV_CONFIGURATION_SEQNO:
1751 if( length != 4 ) /*error, need only seq_num(guint32)*/
1752 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1753 "Error processing Configuration Sequence Number TLV: length is %d, should be 4",
1756 proto_tree_add_item(tlv_tree, hf_ldp_tlv_config_seqno, tvb, offset + 4, 4, FALSE);
1760 case TLV_IPV6_TRANSPORT_ADDRESS:
1761 if( length != 16 ) /*error, need only ipv6*/
1762 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1763 "Error processing IPv6 Transport Address TLV: length is %d, should be 16",
1766 proto_tree_add_item(tlv_tree, hf_ldp_tlv_ipv6_taddr, tvb, offset + 4, 16, FALSE);
1770 case TLV_MAC: /* draft-lasserre-vkompella-ppvpn-vpls-02.txt */
1771 dissect_tlv_mac(tvb, offset + 4, tlv_tree, length);
1774 case TLV_COMMON_SESSION_PARMS:
1775 dissect_tlv_common_session_parms(tvb, offset + 4, tlv_tree, length);
1778 case TLV_ATM_SESSION_PARMS:
1779 dissect_tlv_atm_session_parms(tvb, offset + 4, tlv_tree, length);
1782 case TLV_FRAME_RELAY_SESSION_PARMS:
1783 dissect_tlv_frame_relay_session_parms(tvb, offset + 4, tlv_tree, length);
1786 case TLV_LABEL_REQUEST_MESSAGE_ID:
1787 if( length != 4 ) /*error, need only one msgid*/
1788 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1789 "Error processing Label Request Message ID TLV: length is %d, should be 4",
1792 proto_tree_add_item(tlv_tree, hf_ldp_tlv_lbl_req_msg_id, tvb,offset + 4,length, FALSE);
1796 dissect_tlv_lspid(tvb, offset + 4, tlv_tree, length);
1800 dissect_tlv_er(tvb, offset + 4, tlv_tree, length);
1803 case TLV_ER_HOP_IPV4:
1804 dissect_tlv_er_hop_ipv4(tvb, offset + 4, tlv_tree, length);
1807 case TLV_ER_HOP_IPV6:
1808 dissect_tlv_er_hop_ipv6(tvb, offset +4, tlv_tree, length);
1812 dissect_tlv_er_hop_as(tvb, offset + 4, tlv_tree, length);
1815 case TLV_ER_HOP_LSPID:
1816 dissect_tlv_er_hop_lspid(tvb, offset +4, tlv_tree, length);
1819 case TLV_TRAFFIC_PARAM:
1820 dissect_tlv_traffic(tvb, offset +4, tlv_tree, length);
1823 case TLV_PREEMPTION:
1824 dissect_tlv_preemption(tvb, offset +4, tlv_tree, length);
1827 case TLV_RESOURCE_CLASS:
1828 dissect_tlv_resource_class(tvb, offset +4, tlv_tree, length);
1831 case TLV_ROUTE_PINNING:
1832 dissect_tlv_route_pinning(tvb, offset +4, tlv_tree, length);
1835 case TLV_VENDOR_PRIVATE_START:
1836 if( length < 4 ) /*error, at least Vendor ID*/
1837 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1838 "Error processing Vendor Private Start TLV: length is %d, should be >= 4",
1841 proto_tree_add_item(tlv_tree, hf_ldp_tlv_vendor_id, tvb,offset + 4, 4, FALSE);
1842 if( length > 4 ) /*have data*/
1843 proto_tree_add_text(tlv_tree, tvb, offset + 8, length-4,"Data");
1847 case TLV_EXPERIMENTAL_START:
1848 if( length < 4 ) /*error, at least Experiment ID*/
1849 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1850 "Error processing Experimental Start TLV: length is %d, should be >= 4",
1853 proto_tree_add_item(tlv_tree, hf_ldp_tlv_experiment_id, tvb,offset + 4, 4, FALSE);
1854 if( length > 4 ) /*have data*/
1855 proto_tree_add_text(tlv_tree, tvb, offset + 8, length-4,"Data");
1860 proto_tree_add_item(tlv_tree, hf_ldp_tlv_value, tvb, offset + 4, length, FALSE);
1865 return length + 4; /* Length of the value field + header */
1869 /* Dissect a Message and return the number of bytes consumed ... */
1872 dissect_msg(tvbuff_t *tvb, guint offset, packet_info *pinfo, proto_tree *tree)
1874 guint16 type, typebak;
1876 int length, rem, ao=0, co;
1877 proto_tree *ti = NULL, *msg_tree = NULL;
1879 rem=tvb_reported_length_remaining(tvb, offset);
1881 if( rem < 8 ) {/*chk for minimum header = type + length + msg_id*/
1882 if( check_col(pinfo->cinfo, COL_INFO) )
1883 col_append_fstr(pinfo->cinfo, COL_INFO, "Bad Message");
1885 proto_tree_add_text(tree, tvb, offset, rem,
1886 "Error processing Message: length is %d, should be >= 8",
1890 type = tvb_get_ntohs(tvb, offset) & 0x7FFF;
1892 /*chk for vendor-private*/
1893 if(type>=LDP_VENDOR_PRIVATE_START && type<=LDP_VENDOR_PRIVATE_END){
1894 typebak=type; /*keep type*/
1895 type=LDP_VENDOR_PRIVATE_START;
1897 /*chk for experimental*/
1898 } else if(type>=LDP_EXPERIMENTAL_MESSAGE_START && type<=LDP_EXPERIMENTAL_MESSAGE_END){
1899 typebak=type; /*keep type*/
1900 type=LDP_EXPERIMENTAL_MESSAGE_START;
1904 if( (length = tvb_get_ntohs(tvb, offset + 2)) < (4+extra) ) {/*not enough data for type*/
1905 if( check_col(pinfo->cinfo, COL_INFO) )
1906 col_append_fstr(pinfo->cinfo, COL_INFO, "Bad Message Length ");
1908 proto_tree_add_text(tree, tvb, offset, rem,
1909 "Error processing Message Length: length is %d, should be >= %u",
1914 length = MIN(length, rem); /* Don't go haywire if a problem ... */
1916 if( check_col(pinfo->cinfo, COL_INFO) ){
1917 col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(type, ldp_message_types, "Unknown Message (0x%04X)"));
1921 ti = proto_tree_add_text(tree, tvb, offset, length + 4, "%s",
1922 val_to_str(type, ldp_message_types, "Unknown Message type (0x%04X)"));
1923 msg_tree = proto_item_add_subtree(ti, ett_ldp_message);
1924 if(msg_tree == NULL) return length+4;
1926 proto_tree_add_item(msg_tree, hf_ldp_msg_ubit, tvb, offset, 1, FALSE);
1928 type=tvb_get_ntohs(tvb, offset)&0x7FFF;
1929 proto_tree_add_uint_format(msg_tree, hf_ldp_msg_type, tvb, offset, 2, type, "Message Type: %s (0x%X)", val_to_str(type, ldp_message_types,"Unknown Message Type"), type);
1931 proto_tree_add_item(msg_tree, hf_ldp_msg_len, tvb, offset+2, 2, FALSE);
1932 proto_tree_add_item(msg_tree, hf_ldp_msg_id, tvb, offset+4, 4, FALSE);
1937 case LDP_VENDOR_PRIVATE_START:
1938 hf_tmp=hf_ldp_msg_vendor_id;
1940 case LDP_EXPERIMENTAL_MESSAGE_START:
1941 hf_tmp=hf_ldp_msg_experiment_id;
1944 proto_tree_add_item(msg_tree, hf_tmp, tvb, offset+8, extra, FALSE);
1948 offset += (8+extra);
1949 length -= (4+extra);
1952 while( (length-ao) > 0 ) {
1953 co=dissect_tlv(tvb, offset, msg_tree, length-ao);
1958 return length+8+extra;
1963 dissect_ldp_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
1967 proto_tree *ti=NULL, *pdu_tree = NULL;
1969 if (check_col(pinfo->cinfo, COL_PROTOCOL))
1970 col_set_str(pinfo->cinfo, COL_PROTOCOL, "LDP");
1972 if (check_col(pinfo->cinfo, COL_INFO))
1973 col_clear(pinfo->cinfo, COL_INFO);
1976 ti=proto_tree_add_item(tree, proto_ldp, tvb, 0, -1, FALSE);
1977 pdu_tree = proto_item_add_subtree(ti, ett_ldp);
1979 proto_tree_add_item(pdu_tree, hf_ldp_version, tvb, offset, 2, FALSE);
1982 length = tvb_get_ntohs(tvb, offset+2);
1984 proto_tree_add_uint(pdu_tree, hf_ldp_pdu_len, tvb, offset+2, 2, length);
1986 length += 4; /* add the version and type sizes */
1987 rem = tvb_reported_length_remaining(tvb, offset);
1989 tvb_set_reported_length(tvb, length);
1992 proto_tree_add_item(pdu_tree, hf_ldp_lsr, tvb, offset+4, 4, FALSE);
1993 proto_tree_add_item(pdu_tree, hf_ldp_ls_id, tvb, offset+8, 2, FALSE);
1997 while( tvb_reported_length_remaining(tvb, offset) > 0 ) {
1998 co=dissect_msg(tvb, offset, pinfo, pdu_tree);
2004 dissect_ldp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2007 * Make sure the first PDU has a version number of 1;
2008 * if not, reject this, so we don't get confused by
2009 * packets that happen to be going to or from the
2010 * LDP port but that aren't LDP packets.
2012 if (!tvb_bytes_exist(tvb, 0, 2)) {
2014 * Not enough information to tell.
2018 if (tvb_get_ntohs(tvb, 0) != 1) {
2025 dissect_ldp_pdu(tvb, pinfo, tree);
2028 * XXX - return minimum of this and the length of the PDU?
2030 return tvb_length(tvb);
2034 dissect_ldp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2036 volatile gboolean first = TRUE;
2037 volatile int offset = 0;
2038 int length_remaining;
2043 while (tvb_reported_length_remaining(tvb, offset) != 0) {
2044 length_remaining = tvb_length_remaining(tvb, offset);
2047 * Make sure the first PDU has a version number of 1;
2048 * if not, reject this, so we don't get confused by
2049 * packets that happen to be going to or from the
2050 * LDP port but that aren't LDP packets.
2052 * XXX - this means we can't handle an LDP PDU of which
2053 * only one byte appears in a TCP segment. If that's
2054 * a problem, we'll either have to completely punt on
2055 * rejecting non-LDP packets, or will have to assume
2056 * that if we have only one byte, it's an LDP packet.
2059 if (length_remaining < 2) {
2061 * Not enough information to tell.
2065 if (tvb_get_ntohs(tvb, offset) != 1) {
2075 * Can we do reassembly?
2077 if (ldp_desegment && pinfo->can_desegment) {
2079 * Yes - is the LDP header split across segment
2082 if (length_remaining < 4) {
2084 * Yes. Tell the TCP dissector where
2085 * the data for this message starts in
2086 * the data it handed us, and how many
2087 * more bytes we need, and return.
2089 pinfo->desegment_offset = offset;
2090 pinfo->desegment_len = 4 - length_remaining;
2091 return -pinfo->desegment_len;
2096 * Get the length of the rest of the LDP packet.
2097 * XXX - check for a version of 1 first?
2099 plen = tvb_get_ntohs(tvb, offset + 2);
2102 * Can we do reassembly?
2104 if (ldp_desegment && pinfo->can_desegment) {
2106 * Yes - is the LDP packet split across segment
2109 if (length_remaining < plen + 4) {
2111 * Yes. Tell the TCP dissector where the
2112 * data for this message starts in the data
2113 * it handed us, and how many more bytes we
2116 pinfo->desegment_offset = offset;
2117 pinfo->desegment_len =
2118 (plen + 4) - length_remaining;
2119 return -pinfo->desegment_len;
2124 * Construct a tvbuff containing the amount of the payload
2125 * we have available. Make its reported length the
2126 * amount of data in the DNS-over-TCP packet.
2128 * XXX - if reassembly isn't enabled. the subdissector
2129 * will throw a BoundsError exception, rather than a
2130 * ReportedBoundsError exception. We really want
2131 * a tvbuff where the length is "length", the reported
2132 * length is "plen + 4", and the "if the snapshot length
2133 * were infinite" length is the minimum of the
2134 * reported length of the tvbuff handed to us and "plen+4",
2135 * with a new type of exception thrown if the offset is
2136 * within the reported length but beyond that third length,
2137 * with that exception getting the "Unreassembled Packet"
2140 length = length_remaining;
2141 if (length > plen + 4)
2143 next_tvb = tvb_new_subset(tvb, offset, length, plen + 4);
2146 * Dissect the LDP packet.
2148 * Catch the ReportedBoundsError exception; if this
2149 * particular message happens to get a ReportedBoundsError
2150 * exception, that doesn't mean that we should stop
2151 * dissecting LDP messages within this frame or chunk of
2154 * If it gets a BoundsError, we can stop, as there's nothing
2155 * more to see, so we just re-throw it.
2158 dissect_ldp_pdu(next_tvb, pinfo, tree);
2160 CATCH(BoundsError) {
2163 CATCH(ReportedBoundsError) {
2164 show_reported_bounds_error(tvb, pinfo, tree);
2169 * Skip the LDP header and the payload.
2173 return tvb_length(tvb);
2176 /* Register all the bits needed with the filtering engine */
2179 proto_register_ldp(void)
2181 static hf_register_info hf[] = {
2183 /* Change the following to the type you need */
2184 { "Request", "ldp.req", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "", HFILL }},
2187 { "Response", "ldp.rsp", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "", HFILL }},
2190 { "Version", "ldp.hdr.version", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP Version Number", HFILL }},
2193 { "PDU Length", "ldp.hdr.pdu_len", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP PDU Length", HFILL }},
2196 { "LSR ID", "ldp.hdr.ldpid.lsr", FT_IPv4, BASE_HEX, NULL, 0x0, "LDP Label Space Router ID", HFILL }},
2199 { "Label Space ID", "ldp.hdr.ldpid.lsid", FT_UINT16, BASE_DEC, NULL, 0, "LDP Label Space ID", HFILL }},
2202 { "U bit", "ldp.msg.ubit", FT_BOOLEAN, 8, TFS(&ldp_message_ubit), 0x80, "Unknown Message Bit", HFILL }},
2205 { "Message Type", "ldp.msg.type", FT_UINT16, BASE_HEX, VALS(ldp_message_types), 0x7FFF, "LDP message type", HFILL }},
2208 { "Message Length", "ldp.msg.len", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP Message Length (excluding message type and len)", HFILL }},
2211 { "Message ID", "ldp.msg.id", FT_UINT32, BASE_HEX, NULL, 0x0, "LDP Message ID", HFILL }},
2213 { &hf_ldp_msg_vendor_id,
2214 { "Vendor ID", "ldp.msg.vendor.id", FT_UINT32, BASE_HEX, NULL, 0x0, "LDP Vendor-private Message ID", HFILL }},
2216 { &hf_ldp_msg_experiment_id,
2217 { "Experiment ID", "ldp.msg.experiment.id", FT_UINT32, BASE_HEX, NULL, 0x0, "LDP Experimental Message ID", HFILL }},
2219 { &hf_ldp_tlv_unknown,
2220 { "TLV Unknown bits", "ldp.msg.tlv.unknown", FT_UINT8, BASE_HEX, VALS(tlv_unknown_vals), 0xC0, "TLV Unknown bits Field", HFILL }},
2223 { "TLV Type", "ldp.msg.tlv.type", FT_UINT16, BASE_HEX, VALS(tlv_type_names), 0x3FFF, "TLV Type Field", HFILL }},
2226 {"TLV Length", "ldp.msg.tlv.len", FT_UINT16, BASE_DEC, NULL, 0x0, "TLV Length Field", HFILL }},
2228 { &hf_ldp_tlv_value,
2229 { "TLV Value", "ldp.msg.tlv.value", FT_BYTES, BASE_NONE, NULL, 0x0, "TLV Value Bytes", HFILL }},
2231 { &hf_ldp_tlv_val_hold,
2232 { "Hold Time", "ldp.msg.tlv.hello.hold", FT_UINT16, BASE_DEC, NULL, 0x0, "Hello Common Parameters Hold Time", HFILL }},
2234 { &hf_ldp_tlv_val_target,
2235 { "Targeted Hello", "ldp.msg.tlv.hello.targeted", FT_BOOLEAN, 16, TFS(&hello_targeted_vals), 0x8000, "Hello Common Parameters Targeted Bit", HFILL }},
2237 { &hf_ldp_tlv_val_request,
2238 { "Hello Requested", "ldp,msg.tlv.hello.requested", FT_BOOLEAN, 16, TFS(&hello_requested_vals), 0x4000, "Hello Common Parameters Hello Requested Bit", HFILL }},
2240 { &hf_ldp_tlv_val_res,
2241 { "Reserved", "ldp.msg.tlv.hello.res", FT_UINT16, BASE_HEX, NULL, 0x3FFF, "Hello Common Parameters Reserved Field", HFILL }},
2243 { &hf_ldp_tlv_ipv4_taddr,
2244 { "IPv4 Transport Address", "ldp.msg.tlv.ipv4.taddr", FT_IPv4, BASE_DEC, NULL, 0x0, "IPv4 Transport Address", HFILL }},
2246 { &hf_ldp_tlv_config_seqno,
2247 { "Configuration Sequence Number", "ldp.msg.tlv.hello.cnf_seqno", FT_UINT32, BASE_DEC, NULL, 0x0, "Hello Configuration Sequence Number", HFILL }},
2249 { &hf_ldp_tlv_ipv6_taddr,
2250 { "IPv6 Transport Address", "ldp.msg.tlv.ipv6.taddr", FT_IPv6, BASE_DEC, NULL, 0x0, "IPv6 Transport Address", HFILL }},
2252 { &hf_ldp_tlv_fec_wc,
2253 { "FEC Element Type", "ldp.msg.tlv.fec.type", FT_UINT8, BASE_DEC, VALS(fec_types), 0x0, "Forwarding Equivalence Class Element Types", HFILL }},
2255 { &hf_ldp_tlv_fec_af,
2256 { "FEC Element Address Type", "ldp.msg.tlv.fec.af", FT_UINT16, BASE_DEC, VALS(afn_vals), 0x0, "Forwarding Equivalence Class Element Address Family", HFILL }},
2258 { &hf_ldp_tlv_fec_len,
2259 { "FEC Element Length", "ldp.msg.tlv.fec.len", FT_UINT8, BASE_DEC, NULL, 0x0, "Forwarding Equivalence Class Element Length", HFILL }},
2261 { &hf_ldp_tlv_fec_pfval,
2262 { "FEC Element Prefix Value", "ldp.msg.tlv.fec.pfval", FT_STRING, BASE_NONE, NULL, 0x0, "Forwarding Equivalence Class Element Prefix", HFILL }},
2264 { &hf_ldp_tlv_fec_hoval,
2265 { "FEC Element Host Address Value", "ldp.msg.tlv.fec.hoval", FT_STRING, BASE_NONE, NULL, 0x0, "Forwarding Equivalence Class Element Address", HFILL }},
2267 { &hf_ldp_tlv_addrl_addr_family,
2268 { "Address Family", "ldp.msg.tlv.addrl.addr_family", FT_UINT16, BASE_DEC, VALS(afn_vals), 0x0, "Address Family List", HFILL }},
2270 { &hf_ldp_tlv_addrl_addr,
2271 { "Address", "ldp.msg.tlv.addrl.addr", FT_STRING, BASE_NONE, NULL, 0x0, "Address", HFILL }},
2273 { &hf_ldp_tlv_hc_value,
2274 { "Hop Count Value", "ldp.msg.tlv.hc.value", FT_UINT8, BASE_DEC, NULL, 0x0, "Hop Count", HFILL }},
2276 { &hf_ldp_tlv_pv_lsrid,
2277 { "LSR Id", "ldp.msg.tlv.pv.lsrid", FT_IPv4, BASE_DEC, NULL, 0x0, "Path Vector LSR Id", HFILL }},
2279 { &hf_ldp_tlv_sess_ver,
2280 { "Session Protocol Version", "ldp.msg.tlv.sess.ver", FT_UINT16, BASE_DEC, NULL, 0x0, "Common Session Parameters Protocol Version", HFILL }},
2282 { &hf_ldp_tlv_sess_ka,
2283 { "Session KeepAlive Time", "ldp.msg.tlv.sess.ka", FT_UINT16, BASE_DEC, NULL, 0x0, "Common Session Parameters KeepAlive Time", HFILL }},
2285 { &hf_ldp_tlv_sess_advbit,
2286 { "Session Label Advertisement Discipline", "ldp.msg.tlv.sess.advbit",
2287 FT_BOOLEAN, 8, TFS(&tlv_sess_advbit_vals), 0x80,
2288 "Common Session Parameters Label Advertisement Discipline", HFILL }},
2290 { &hf_ldp_tlv_sess_ldetbit,
2291 { "Session Loop Detection", "ldp.msg.tlv.sess.ldetbit", FT_BOOLEAN, 8, TFS(&tlv_sess_ldetbit_vals), 0x40, "Common Session Parameters Loop Detection", HFILL }},
2293 { &hf_ldp_tlv_sess_pvlim,
2294 { "Session Path Vector Limit", "ldp.msg.tlv.sess.pvlim", FT_UINT8, BASE_DEC, NULL, 0x0, "Common Session Parameters Path Vector Limit", HFILL }},
2296 { &hf_ldp_tlv_sess_mxpdu,
2297 { "Session Max PDU Length", "ldp.msg.tlv.sess.mxpdu", FT_UINT16, BASE_DEC, NULL, 0x0, "Common Session Parameters Max PDU Length", HFILL }},
2299 { &hf_ldp_tlv_sess_rxlsr,
2300 { "Session Receiver LSR Identifier", "ldp.msg.tlv.sess.rxlsr", FT_IPv4, BASE_DEC, NULL, 0x0, "Common Session Parameters LSR Identifier", HFILL }},
2302 { &hf_ldp_tlv_sess_rxls,
2303 { "Session Receiver Label Space Identifier", "ldp.msg.tlv.sess.rxlsr", FT_UINT16, BASE_DEC, NULL, 0x0, "Common Session Parameters Receiver Label Space Identifier", HFILL }},
2305 { &hf_ldp_tlv_sess_atm_merge,
2306 { "Session ATM Merge Parameter", "ldp.msg.tlv.sess.atm.merge", FT_UINT8, BASE_DEC, VALS(tlv_atm_merge_vals), 0xC0, "Merge ATM Session Parameters", HFILL }},
2308 { &hf_ldp_tlv_sess_atm_lr,
2309 { "Number of ATM Label Ranges", "ldp.msg.tlv.sess.atm.lr", FT_UINT8, BASE_DEC, NULL, 0x3C, "Number of Label Ranges", HFILL }},
2311 { &hf_ldp_tlv_sess_atm_dir,
2312 { "Directionality", "ldp.msg.tlv.sess.atm.dir", FT_BOOLEAN, 8, TFS(&tlv_atm_dirbit), 0x02, "Lablel Directionality", HFILL }},
2314 { &hf_ldp_tlv_sess_atm_minvpi,
2315 { "Minimum VPI", "ldp.msg.tlv.sess.atm.minvpi", FT_UINT16, BASE_DEC, NULL, 0x0FFF, "Minimum VPI", HFILL }},
2317 { &hf_ldp_tlv_sess_atm_minvci,
2318 { "Minimum VCI", "ldp.msg.tlv.sess.atm.minvci", FT_UINT16, BASE_DEC, NULL, 0x0, "Minimum VCI", HFILL }},
2320 { &hf_ldp_tlv_sess_atm_maxvpi,
2321 { "Maximum VPI", "ldp.msg.tlv.sess.atm.maxvpi", FT_UINT16, BASE_DEC, NULL, 0x0FFF, "Maximum VPI", HFILL }},
2323 { &hf_ldp_tlv_sess_atm_maxvci,
2324 { "Maximum VCI", "ldp.msg.tlv.sess.atm.maxvci", FT_UINT16, BASE_DEC, NULL, 0x0, "Maximum VCI", HFILL }},
2326 { &hf_ldp_tlv_sess_fr_merge,
2327 { "Session Frame Relay Merge Parameter", "ldp.msg.tlv.sess.fr.merge", FT_UINT8, BASE_DEC, VALS(tlv_fr_merge_vals), 0xC0, "Merge Frame Relay Session Parameters", HFILL }},
2329 { &hf_ldp_tlv_sess_fr_lr,
2330 { "Number of Frame Relay Label Ranges", "ldp.msg.tlv.sess.fr.lr", FT_UINT8, BASE_DEC, NULL, 0x3C, "Number of Label Ranges", HFILL }},
2332 { &hf_ldp_tlv_sess_fr_dir,
2333 { "Directionality", "ldp.msg.tlv.sess.fr.dir", FT_BOOLEAN, 8, TFS(&tlv_atm_dirbit), 0x02, "Lablel Directionality", HFILL }},
2335 { &hf_ldp_tlv_sess_fr_len,
2336 { "Number of DLCI bits", "ldp.msg.tlv.sess.fr.len", FT_UINT16, BASE_DEC, VALS(tlv_fr_len_vals), 0x0180, "DLCI Number of bits", HFILL }},
2338 { &hf_ldp_tlv_sess_fr_mindlci,
2339 { "Minimum DLCI", "ldp.msg.tlv.sess.fr.mindlci", FT_UINT24, BASE_DEC, NULL, 0x7FFFFF, "Minimum DLCI", HFILL }},
2341 { &hf_ldp_tlv_sess_fr_maxdlci,
2342 { "Maximum DLCI", "ldp.msg.tlv.sess.fr.maxdlci", FT_UINT24, BASE_DEC, NULL, 0x7FFFFF, "Maximum DLCI", HFILL }},
2344 { &hf_ldp_tlv_lbl_req_msg_id,
2345 { "Label Request Message ID", "ldp.tlv.lbl_req_msg_id", FT_UINT32, BASE_HEX, NULL, 0x0, "Label Request Message to be aborted", HFILL }},
2347 { &hf_ldp_tlv_vendor_id,
2348 { "Vendor ID", "ldp.msg.tlv.vendor_id", FT_UINT32, BASE_HEX, NULL, 0, "IEEE 802 Assigned Vendor ID", HFILL }},
2350 { &hf_ldp_tlv_experiment_id,
2351 { "Experiment ID", "ldp.msg.tlv.experiment_id", FT_UINT32, BASE_HEX, NULL, 0, "Experiment ID", HFILL }},
2353 { &hf_ldp_tlv_generic_label,
2354 { "Generic Label", "ldp.msg.tlv.generic.label", FT_UINT32, BASE_HEX, NULL, 0x000FFFFF, "Generic Label", HFILL }},
2356 { &hf_ldp_tlv_atm_label_vbits,
2357 { "V-bits", "ldp.msg.tlv.atm.label.vbits", FT_UINT8, BASE_HEX, VALS(tlv_atm_vbits_vals), 0x30, "ATM Label V Bits", HFILL }},
2359 { &hf_ldp_tlv_atm_label_vpi,
2360 { "VPI", "ldp.msg.tlv.atm.label.vpi", FT_UINT16, BASE_DEC, NULL, 0x0FFF, "ATM Label VPI", HFILL }},
2362 { &hf_ldp_tlv_atm_label_vci,
2363 { "VCI", "ldp.msg.tlv.atm.label.vci", FT_UINT16, BASE_DEC, NULL, 0, "ATM Label VCI", HFILL }},
2365 { &hf_ldp_tlv_fr_label_len,
2366 { "Number of DLCI bits", "ldp.msg.tlv.fr.label.len", FT_UINT16, BASE_DEC, VALS(tlv_fr_len_vals), 0x0180, "DLCI Number of bits", HFILL }},
2368 { &hf_ldp_tlv_fr_label_dlci,
2369 { "DLCI", "ldp.msg.tlv.fr.label.dlci", FT_UINT24, BASE_DEC, NULL, 0x7FFFFF, "FRAME RELAY Label DLCI", HFILL }},
2371 { &hf_ldp_tlv_status_ebit,
2372 { "E Bit", "ldp.msg.tlv.status.ebit", FT_BOOLEAN, 8, TFS(&tlv_status_ebit), 0x80, "Fatal Error Bit", HFILL }},
2374 { &hf_ldp_tlv_status_fbit,
2375 { "F Bit", "ldp.msg.tlv.status.fbit", FT_BOOLEAN, 8, TFS(&tlv_status_fbit), 0x40, "Forward Bit", HFILL }},
2377 { &hf_ldp_tlv_status_data,
2378 { "Status Data", "ldp.msg.tlv.status.data", FT_UINT32, BASE_HEX, VALS(tlv_status_data), 0x3FFFFFFF, "Status Data", HFILL }},
2380 { &hf_ldp_tlv_status_msg_id,
2381 { "Message ID", "ldp.msg.tlv.status.msg.id", FT_UINT32, BASE_HEX, NULL, 0x0, "Identifies peer message to which Status TLV refers", HFILL }},
2383 { &hf_ldp_tlv_status_msg_type,
2384 { "Message Type", "ldp.msg.tlv.status.msg.type", FT_UINT16, BASE_HEX, VALS(ldp_message_types), 0x0, "Type of peer message to which Status TLV refers", HFILL }},
2386 { &hf_ldp_tlv_extstatus_data,
2387 { "Extended Status Data", "ldp.msg.tlv.extstatus.data", FT_UINT32, BASE_HEX, NULL, 0x0, "Extended Status Data", HFILL }},
2389 { &hf_ldp_tlv_returned_version,
2390 { "Returned PDU Version", "ldp.msg.tlv.returned.version", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP Version Number", HFILL }},
2392 { &hf_ldp_tlv_returned_pdu_len,
2393 { "Returned PDU Length", "ldp.msg.tlv.returned.pdu_len", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP PDU Length", HFILL }},
2395 { &hf_ldp_tlv_returned_lsr,
2396 { "Returned PDU LSR ID", "ldp.msg.tlv.returned.ldpid.lsr", FT_IPv4, BASE_DEC, NULL, 0x0, "LDP Label Space Router ID", HFILL }},
2398 { &hf_ldp_tlv_returned_ls_id,
2399 { "Returned PDU Label Space ID", "ldp.msg.tlv.returned.ldpid.lsid", FT_UINT16, BASE_HEX, NULL, 0x0, "LDP Label Space ID", HFILL }},
2401 { &hf_ldp_tlv_returned_msg_ubit,
2402 { "Returned Message Unknown bit", "ldp.msg.tlv.returned.msg.ubit", FT_UINT8, BASE_HEX, TFS(&ldp_message_ubit), 0x80, "Message Unknown bit", HFILL }},
2404 { &hf_ldp_tlv_returned_msg_type,
2405 { "Returned Message Type", "ldp.msg.tlv.returned.msg.type", FT_UINT16, BASE_HEX, VALS(ldp_message_types), 0x7FFF, "LDP message type", HFILL }},
2407 { &hf_ldp_tlv_returned_msg_len,
2408 { "Returned Message Length", "ldp.msg.tlv.returned.msg.len", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP Message Length (excluding message type and len)", HFILL }},
2410 { &hf_ldp_tlv_returned_msg_id,
2411 { "Returned Message ID", "ldp.msg.tlv.returned.msg.id", FT_UINT32, BASE_HEX, NULL, 0x0, "LDP Message ID", HFILL }},
2414 { "MAC address", "ldp.msg.tlv.mac", FT_ETHER, BASE_NONE, NULL, 0x0, "MAC address", HFILL}},
2416 {&hf_ldp_tlv_fec_vc_controlword,
2417 {"C-bit", "ldp.msg.tlv.fec.vc.controlword", FT_BOOLEAN, 8, TFS(&fec_vc_cbit), 0x80, "Control Word Present", HFILL }},
2419 {&hf_ldp_tlv_fec_vc_vctype,
2420 {"VC Type", "ldp.msg.tlv.fec.vc.vctype", FT_UINT16, BASE_HEX, VALS(fec_vc_types_vals), 0x7FFF, "Virtual Circuit Type", HFILL }},
2422 {&hf_ldp_tlv_fec_vc_infolength,
2423 {"VC Info Length", "ldp.msg.tlv.fec.vc.infolength", FT_UINT8, BASE_DEC, NULL, 0x0, "VC FEC Info Length", HFILL }},
2425 {&hf_ldp_tlv_fec_vc_groupid,
2426 {"Group ID", "ldp.msg.tlv.fec.vc.groupid", FT_UINT32, BASE_DEC, NULL, 0x0, "VC FEC Group ID", HFILL }},
2428 {&hf_ldp_tlv_fec_vc_vcid,
2429 {"VC ID", "ldp.msg.tlv.fec.vc.vcid", FT_UINT32, BASE_DEC, NULL, 0x0, "VC FEC VCID", HFILL }},
2431 {&hf_ldp_tlv_fec_vc_intparam_length,
2432 {"Length", "ldp.msg.tlv.fec.vc.intparam.length", FT_UINT8, BASE_DEC, NULL, 0x0, "VC FEC Interface Paramater Length", HFILL }},
2434 {&hf_ldp_tlv_fec_vc_intparam_mtu,
2435 {"MTU", "ldp.msg.tlv.fec.vc.intparam.mtu", FT_UINT16, BASE_DEC, NULL, 0x0, "VC FEC Interface Paramater MTU", HFILL }},
2437 {&hf_ldp_tlv_fec_vc_intparam_id,
2438 {"ID", "ldp.msg.tlv.fec.vc.intparam.id", FT_UINT8, BASE_HEX, VALS(fec_vc_interfaceparm), 0x0, "VC FEC Interface Paramater ID", HFILL }},
2440 {&hf_ldp_tlv_fec_vc_intparam_maxcatmcells,
2441 {"Number of Cells", "ldp.msg.tlv.fec.vc.intparam.maxatm", FT_UINT16, BASE_DEC, NULL, 0x0, "VC FEC Interface Param Max ATM Concat Cells", HFILL }},
2443 { &hf_ldp_tlv_fec_vc_intparam_desc,
2444 { "Description", "ldp.msg.tlv.fec.vc.intparam.desc", FT_STRING, BASE_DEC, NULL, 0, "VC FEC Interface Description", HFILL }},
2446 { &hf_ldp_tlv_fec_vc_intparam_cembytes,
2447 {"Payload Bytes", "ldp.msg.tlv.fec.vc.intparam.cembytes", FT_UINT16, BASE_DEC, NULL, 0x0, "VC FEC Interface Param CEM Payload Bytes", HFILL }},
2449 { &hf_ldp_tlv_fec_vc_intparam_vpnid_oui,
2450 { "VPN OUI", "ldp.msg.tlv.fec.vc.intparam.vpnid.oui", FT_UINT24, BASE_HEX, NULL, 0x0, "VC FEC Interface Param VPN OUI", HFILL }},
2452 { &hf_ldp_tlv_fec_vc_intparam_vpnid_index,
2453 { "VPN Index", "ldp.msg.tlv.fec.vc.intparam.vpnid.index", FT_UINT32, BASE_HEX, NULL, 0x0, "VC FEC Interface Param VPN Index", HFILL }},
2455 { &hf_ldp_tlv_lspid_act_flg,
2456 { "Action Indicator Flag", "ldp.msg.tlv.lspid.actflg", FT_UINT16, BASE_HEX, VALS(ldp_act_flg_vals), 0x000F, "Action Indicator Flag", HFILL}},
2458 { &hf_ldp_tlv_lspid_cr_lsp,
2459 { "Local CR-LSP ID", "ldp.msg.tlv.lspid.locallspid", FT_UINT16, BASE_HEX, NULL, 0x0, "Local CR-LSP ID", HFILL}},
2461 { &hf_ldp_tlv_lspid_ldpid,
2462 { "Ingress LSR Router ID", "ldp.msg.tlv.lspid.lsrid", FT_IPv4, BASE_DEC, NULL, 0x0, "Ingress LSR Router ID", HFILL}},
2464 { &hf_ldp_tlv_er_hop_loose,
2465 { "Loose route bit", "ldp.msg.tlv.er_hop.loose", FT_UINT24, BASE_HEX, VALS(ldp_loose_vals), 0x800000, "Loose route bit", HFILL}},
2467 { &hf_ldp_tlv_er_hop_prelen,
2468 { "Prefix length", "ldp.msg.tlv.er_hop.prefixlen", FT_UINT8, BASE_DEC, NULL, 0x0, "Prefix len", HFILL}},
2470 { &hf_ldp_tlv_er_hop_prefix4,
2471 { "IPv4 Address", "ldp.msg.tlv.er_hop.prefix4", FT_IPv4, BASE_DEC, NULL, 0x0, "IPv4 Address", HFILL}},
2472 { &hf_ldp_tlv_er_hop_prefix6,
2473 { "IPv6 Address", "ldp.msg.tlv.er_hop.prefix6", FT_IPv6, BASE_DEC, NULL, 0x0, "IPv6 Address", HFILL}},
2475 { &hf_ldp_tlv_er_hop_as,
2476 { "AS Number", "ldp.msg.tlv.er_hop.as", FT_UINT16, BASE_DEC, NULL, 0x0, "AS Number", HFILL}},
2478 { &hf_ldp_tlv_er_hop_cr_lsp,
2479 { "Local CR-LSP ID", "ldp.msg.tlv.er_hop.locallspid", FT_UINT16, BASE_DEC, NULL, 0x0, "Local CR-LSP ID", HFILL}},
2481 { &hf_ldp_tlv_er_hop_ldpid,
2482 { "Local CR-LSP ID", "ldp.msg.tlv.er_hop.lsrid", FT_IPv4, BASE_DEC, NULL, 0x0, "Local CR-LSP ID", HFILL}},
2484 { &hf_ldp_tlv_flags_reserv,
2485 { "Reserved", "ldp.msg.tlv.flags_reserv", FT_UINT8, BASE_HEX, NULL, 0xC0, "Reserved", HFILL}},
2487 { &hf_ldp_tlv_flags_pdr,
2488 { "PDR", "ldp.msg.tlv.flags_pdr", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x1, "PDR negotiability flag", HFILL}},
2490 { &hf_ldp_tlv_flags_pbs,
2491 { "PBS", "ldp.msg.tlv.flags_pbs", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x2, "PBS negotiability flag", HFILL}},
2493 { &hf_ldp_tlv_flags_cdr,
2494 { "CDR", "ldp.msg.tlv.flags_cdr", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x4, "CDR negotiability flag", HFILL}},
2496 { &hf_ldp_tlv_flags_cbs,
2497 { "CBS", "ldp.msg.tlv.flags_cbs", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x8, "CBS negotiability flag", HFILL}},
2499 { &hf_ldp_tlv_flags_ebs,
2500 { "EBS", "ldp.msg.tlv.flags_ebs", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x10, "EBS negotiability flag", HFILL}},
2502 { &hf_ldp_tlv_flags_weight,
2503 { "Weight", "ldp.msg.tlv.flags_weight", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x20, "Weight negotiability flag", HFILL}},
2505 { &hf_ldp_tlv_frequency,
2506 { "Frequency", "ldp.msg.tlv.frequency", FT_UINT8, BASE_DEC, VALS(freq_values), 0, "Frequency", HFILL}},
2508 { &hf_ldp_tlv_weight,
2509 { "Weight", "ldp.msg.tlv.weight", FT_UINT8, BASE_DEC, NULL, 0, "Weight of the CR-LSP", HFILL}},
2512 { "PDR", "ldp.msg.tlv.pdr", FT_DOUBLE, BASE_NONE, NULL, 0, "Peak Data Rate", HFILL}},
2515 { "PBS", "ldp.msg.tlv.pbs", FT_DOUBLE, BASE_NONE, NULL, 0, "Peak Burst Size", HFILL}},
2518 { "CDR", "ldp.msg.tlv.cdr", FT_DOUBLE, BASE_NONE, NULL, 0, "Committed Data Rate", HFILL}},
2521 { "CBS", "ldp.msg.tlv.cbs", FT_DOUBLE, BASE_NONE, NULL, 0, "Committed Burst Size", HFILL}},
2524 { "EBS", "ldp.msg.tlv.ebs", FT_DOUBLE, BASE_NONE, NULL, 0, "Excess Burst Size", HFILL}},
2526 { &hf_ldp_tlv_set_prio,
2527 { "Set Prio", "ldp.msg.tlv.set_prio", FT_UINT8, BASE_DEC, NULL, 0, "LSP setup priority", HFILL}},
2529 { &hf_ldp_tlv_hold_prio,
2530 { "Hold Prio", "ldp.msg.tlv.hold_prio", FT_UINT8, BASE_DEC, NULL, 0, "LSP hold priority", HFILL}},
2532 { &hf_ldp_tlv_route_pinning,
2533 { "Route Pinning", "ldp.msg.tlv.route_pinning", FT_UINT32, BASE_DEC, VALS(route_pinning_vals), 0x80000000, "Route Pinning", HFILL}},
2535 { &hf_ldp_tlv_resource_class,
2536 { "Resource Class", "ldp.msg.tlv.resource_class", FT_UINT32, BASE_HEX, NULL, 0, "Resource Class (Color)", HFILL}},
2540 static gint *ett[] = {
2548 &ett_ldp_fec_vc_interfaceparam
2550 module_t *ldp_module;
2552 proto_ldp = proto_register_protocol("Label Distribution Protocol",
2555 proto_register_field_array(proto_ldp, hf, array_length(hf));
2556 proto_register_subtree_array(ett, array_length(ett));
2558 /* Register our configuration options for , particularly our port */
2560 ldp_module = prefs_register_protocol(proto_ldp, proto_reg_handoff_ldp);
2562 prefs_register_uint_preference(ldp_module, "tcp.port", "LDP TCP Port",
2563 "Set the TCP port for messages (if other"
2564 " than the default of 646)",
2565 10, &global_ldp_tcp_port);
2567 prefs_register_uint_preference(ldp_module, "udp.port", "LDP UDP Port",
2568 "Set the UDP port for messages (if other"
2569 " than the default of 646)",
2570 10, &global_ldp_udp_port);
2572 prefs_register_bool_preference(ldp_module, "desegment_ldp_messages",
2573 "Desegment all LDP messages spanning multiple TCP segments",
2574 "Whether the LDP dissector should desegment all messages spanning multiple TCP segments",
2578 /* The registration hand-off routine */
2580 proto_reg_handoff_ldp(void)
2582 static gboolean ldp_prefs_initialized = FALSE;
2583 static dissector_handle_t ldp_tcp_handle, ldp_handle;
2585 if (!ldp_prefs_initialized) {
2587 ldp_tcp_handle = new_create_dissector_handle(dissect_ldp_tcp, proto_ldp);
2588 ldp_handle = new_create_dissector_handle(dissect_ldp, proto_ldp);
2590 ldp_prefs_initialized = TRUE;
2595 dissector_delete("tcp.port", tcp_port, ldp_tcp_handle);
2596 dissector_delete("udp.port", udp_port, ldp_handle);
2600 /* Set our port number for future use */
2602 tcp_port = global_ldp_tcp_port;
2603 udp_port = global_ldp_udp_port;
2605 dissector_add("tcp.port", global_ldp_tcp_port, ldp_tcp_handle);
2606 dissector_add("udp.port", global_ldp_udp_port, ldp_handle);