2 * Routines for LDP (RFC 3036) packet disassembly
4 * $Id: packet-ldp.c,v 1.40 2002/08/02 23:35:53 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_sess_ver = -1;
108 static int hf_ldp_tlv_sess_ka = -1;
109 static int hf_ldp_tlv_sess_advbit = -1;
110 static int hf_ldp_tlv_sess_ldetbit = -1;
111 static int hf_ldp_tlv_sess_pvlim = -1;
112 static int hf_ldp_tlv_sess_mxpdu = -1;
113 static int hf_ldp_tlv_sess_rxlsr = -1;
114 static int hf_ldp_tlv_sess_rxls = -1;
115 static int hf_ldp_tlv_sess_atm_merge = -1;
116 static int hf_ldp_tlv_sess_atm_lr = -1;
117 static int hf_ldp_tlv_sess_atm_dir = -1;
118 static int hf_ldp_tlv_sess_atm_minvpi = -1;
119 static int hf_ldp_tlv_sess_atm_maxvpi = -1;
120 static int hf_ldp_tlv_sess_atm_minvci = -1;
121 static int hf_ldp_tlv_sess_atm_maxvci = -1;
122 static int hf_ldp_tlv_sess_fr_merge = -1;
123 static int hf_ldp_tlv_sess_fr_lr = -1;
124 static int hf_ldp_tlv_sess_fr_dir = -1;
125 static int hf_ldp_tlv_sess_fr_len = -1;
126 static int hf_ldp_tlv_sess_fr_mindlci = -1;
127 static int hf_ldp_tlv_sess_fr_maxdlci = -1;
128 static int hf_ldp_tlv_lbl_req_msg_id = -1;
129 static int hf_ldp_tlv_vendor_id = -1;
130 static int hf_ldp_tlv_experiment_id = -1;
131 static int hf_ldp_tlv_fec_vc_controlword = -1;
132 static int hf_ldp_tlv_fec_vc_vctype = -1;
133 static int hf_ldp_tlv_fec_vc_infolength = -1;
134 static int hf_ldp_tlv_fec_vc_groupid = -1;
135 static int hf_ldp_tlv_fec_vc_vcid = -1;
136 static int hf_ldp_tlv_fec_vc_intparam_length = -1;
137 static int hf_ldp_tlv_fec_vc_intparam_mtu = -1;
138 static int hf_ldp_tlv_fec_vc_intparam_id = -1;
139 static int hf_ldp_tlv_fec_vc_intparam_maxcatmcells = -1;
140 static int hf_ldp_tlv_fec_vc_intparam_desc = -1;
141 static int hf_ldp_tlv_fec_vc_intparam_cembytes = -1;
142 static int hf_ldp_tlv_lspid_act_flg = -1;
143 static int hf_ldp_tlv_lspid_cr_lsp = -1;
144 static int hf_ldp_tlv_lspid_ldpid = -1;
145 static int hf_ldp_tlv_er_hop_loose = -1;
146 static int hf_ldp_tlv_er_hop_prelen = -1;
147 static int hf_ldp_tlv_er_hop_prefix4 = -1;
148 static int hf_ldp_tlv_er_hop_prefix6 = -1;
149 static int hf_ldp_tlv_er_hop_as = -1;
150 static int hf_ldp_tlv_er_hop_cr_lsp = -1;
151 static int hf_ldp_tlv_er_hop_ldpid = -1;
152 static int hf_ldp_tlv_flags_reserv = -1;
153 static int hf_ldp_tlv_flags_weight = -1;
154 static int hf_ldp_tlv_flags_ebs = -1;
155 static int hf_ldp_tlv_flags_cbs = -1;
156 static int hf_ldp_tlv_flags_cdr = -1;
157 static int hf_ldp_tlv_flags_pbs = -1;
158 static int hf_ldp_tlv_flags_pdr = -1;
159 static int hf_ldp_tlv_frequency = -1;
160 static int hf_ldp_tlv_pdr = -1;
161 static int hf_ldp_tlv_pbs = -1;
162 static int hf_ldp_tlv_cdr = -1;
163 static int hf_ldp_tlv_cbs = -1;
164 static int hf_ldp_tlv_ebs = -1;
165 static int hf_ldp_tlv_weight = -1;
166 static int hf_ldp_tlv_set_prio = -1;
167 static int hf_ldp_tlv_hold_prio = -1;
168 static int hf_ldp_tlv_route_pinning = -1;
169 static int hf_ldp_tlv_resource_class = -1;
170 static int ett_ldp = -1;
171 static int ett_ldp_header = -1;
172 static int ett_ldp_ldpid = -1;
173 static int ett_ldp_message = -1;
174 static int ett_ldp_tlv = -1;
175 static int ett_ldp_tlv_val = -1;
176 static int ett_ldp_fec = -1;
177 static int ett_ldp_fec_vc_interfaceparam = -1;
179 static int tcp_port = 0;
180 static int udp_port = 0;
182 /* desegmentation of LDP over TCP */
183 static gboolean ldp_desegment = FALSE;
185 /* Add your functions here */
187 static int global_ldp_tcp_port = TCP_PORT_LDP;
188 static int global_ldp_udp_port = UDP_PORT_LDP;
191 * The following define all the TLV types I know about
194 #define TLV_FEC 0x0100
195 #define TLV_ADDRESS_LIST 0x0101
196 #define TLV_HOP_COUNT 0x0103
197 #define TLV_PATH_VECTOR 0x0104
198 #define TLV_GENERIC_LABEL 0x0200
199 #define TLV_ATM_LABEL 0x0201
200 #define TLV_FRAME_LABEL 0x0202
201 #define TLV_STATUS 0x0300
202 #define TLV_EXTENDED_STATUS 0x0301
203 #define TLV_RETURNED_PDU 0x0302
204 #define TLV_RETURNED_MESSAGE 0x0303
205 #define TLV_COMMON_HELLO_PARMS 0x0400
206 #define TLV_IPV4_TRANSPORT_ADDRESS 0x0401
207 #define TLV_CONFIGURATION_SEQNO 0x0402
208 #define TLV_IPV6_TRANSPORT_ADDRESS 0x0403
209 #define TLV_COMMON_SESSION_PARMS 0x0500
210 #define TLV_ATM_SESSION_PARMS 0x0501
211 #define TLV_FRAME_RELAY_SESSION_PARMS 0x0502
212 #define TLV_LABEL_REQUEST_MESSAGE_ID 0x0600
213 #define TLV_ER 0x0800
214 #define TLV_ER_HOP_IPV4 0x0801
215 #define TLV_ER_HOP_IPV6 0x0802
216 #define TLV_ER_HOP_AS 0x0803
217 #define TLV_ER_HOP_LSPID 0x0804
218 #define TLV_TRAFFIC_PARAM 0x0810
219 #define TLV_PREEMPTION 0x0820
220 #define TLV_LSPID 0x0821
221 #define TLV_RESOURCE_CLASS 0x0822
222 #define TLV_ROUTE_PINNING 0x0823
224 #define TLV_VENDOR_PRIVATE_START 0x3E00
225 #define TLV_VENDOR_PRIVATE_END 0x3EFF
226 #define TLV_EXPERIMENTAL_START 0x3F00
227 #define TLV_EXPERIMENTAL_END 0x3FFF
229 static const value_string tlv_type_names[] = {
230 { TLV_FEC, "Forwarding Equivalence Classes TLV" },
231 { TLV_ADDRESS_LIST, "Address List TLV"},
232 { TLV_HOP_COUNT, "Hop Count TLV"},
233 { TLV_PATH_VECTOR, "Path Vector TLV"},
234 { TLV_GENERIC_LABEL, "Generic Label TLV"},
235 { TLV_ATM_LABEL, "ATM Label TLV"},
236 { TLV_FRAME_LABEL, "Frame Label TLV"},
237 { TLV_STATUS, "Status TLV"},
238 { TLV_EXTENDED_STATUS, "Extended Status TLV"},
239 { TLV_RETURNED_PDU, "Returned PDU TLV"},
240 { TLV_RETURNED_MESSAGE, "Returned Message TLV"},
241 { TLV_COMMON_HELLO_PARMS, "Common Hello Parameters TLV"},
242 { TLV_IPV4_TRANSPORT_ADDRESS, "IPv4 Transport Address TLV"},
243 { TLV_CONFIGURATION_SEQNO, "Configuration Sequence Number TLV"},
244 { TLV_IPV6_TRANSPORT_ADDRESS, "IPv6 Transport Address TLV"},
245 { TLV_COMMON_SESSION_PARMS, "Common Session Parameters TLV"},
246 { TLV_ATM_SESSION_PARMS, "ATM Session Parameters TLV"},
247 { TLV_FRAME_RELAY_SESSION_PARMS, "Frame Relay Session Parameters TLV"},
248 { TLV_LABEL_REQUEST_MESSAGE_ID, "Label Request Message ID TLV"},
249 { TLV_LSPID, "LSP ID TLV"},
250 { TLV_ER, "Explicit route TLV"},
251 { TLV_ER_HOP_IPV4, "ER hop IPv4 prefix TLV"},
252 { TLV_ER_HOP_IPV6, "ER hop IPv6 prefix TLV"},
253 { TLV_ER_HOP_AS, "ER hop Autonomous system number prefix TLV"},
254 { TLV_TRAFFIC_PARAM, "Traffic parameters TLV"},
255 { TLV_PREEMPTION, "Preemption TLV"},
256 { TLV_ER_HOP_LSPID, "ER hop LSPID prefix TLV"},
257 { TLV_RESOURCE_CLASS, "Resource Class (Color) TLV"},
258 { TLV_ROUTE_PINNING, "Route Pinning TLV"},
259 { TLV_VENDOR_PRIVATE_START, "Vendor Private TLV"},
260 { TLV_EXPERIMENTAL_START, "Experimental TLV"},
265 * The following define all the message types I know about
268 #define LDP_NOTIFICATION 0x0001
269 #define LDP_HELLO 0x0100
270 #define LDP_INITIALIZATION 0x0200
271 #define LDP_KEEPALIVE 0x0201
272 #define LDP_ADDRESS 0x0300
273 #define LDP_ADDRESS_WITHDRAWAL 0x0301
274 #define LDP_LABEL_MAPPING 0x0400
275 #define LDP_LABEL_REQUEST 0x0401
276 #define LDP_LABEL_WITHDRAWAL 0x0402
277 #define LDP_LABEL_RELEASE 0x0403
278 #define LDP_LABEL_ABORT_REQUEST 0x0404
279 #define LDP_VENDOR_PRIVATE_START 0x3E00
280 #define LDP_VENDOR_PRIVATE_END 0x3EFF
281 #define LDP_EXPERIMENTAL_MESSAGE_START 0x3F00
282 #define LDP_EXPERIMENTAL_MESSAGE_END 0x3FFF
284 static const value_string ldp_message_types[] = {
285 {LDP_NOTIFICATION, "Notification Message"},
286 {LDP_HELLO, "Hello Message"},
287 {LDP_INITIALIZATION, "Initialization Message"},
288 {LDP_KEEPALIVE, "Keep Alive Message"},
289 {LDP_ADDRESS, "Address Message"},
290 {LDP_ADDRESS_WITHDRAWAL, "Address Withdrawal Message"},
291 {LDP_LABEL_MAPPING, "Label Mapping Message"},
292 {LDP_LABEL_REQUEST, "Label Request Message"},
293 {LDP_LABEL_WITHDRAWAL, "Label Withdrawal Message"},
294 {LDP_LABEL_RELEASE, "Label Release Message"},
295 {LDP_LABEL_ABORT_REQUEST, "Label Abort Request Message"},
296 {LDP_VENDOR_PRIVATE_START, "Vendor-Private Message"},
297 {LDP_EXPERIMENTAL_MESSAGE_START, "Experimental Message"},
301 static const true_false_string ldp_message_ubit = {
303 "Unknown bit not set"
306 static const true_false_string hello_targeted_vals = {
311 static const value_string tlv_unknown_vals[] = {
312 {0, "Known TLV, do not Forward"},
313 {1, "Known TLV, do Forward"},
314 {2, "Unknown TLV, do not Forward"},
315 {3, "Unknown TLV, do Forward"},
319 #define WILDCARD_FEC 1
323 #define VC_FEC 0x80 /* draft-martini-l2circuit-trans-mpls */
325 static const value_string fec_types[] = {
326 {WILDCARD_FEC, "Wildcard FEC"},
327 {PREFIX_FEC, "Prefix FEC"},
328 {HOST_FEC, "Host Address FEC"},
329 {CRLSP_FEC, "CR LSP FEC"},
330 {VC_FEC, "Virtual Circuit FEC"},
335 static const value_string fec_vc_types_vals[] = {
336 {0x0001, "Frame Relay DLCI"},
337 {0x0002, "ATM VCC transport"},
338 {0x0003, "ATM VPC transport"},
339 {0x0004, "Ethernet VLAN"},
340 {0x0005, "Ethernet"},
343 {0x0009, "ATM VCC cell transport"},
345 {0x000A, "ATM VPC cell transport"},
350 #define FEC_VC_INTERFACEPARAM_MTU 0x01
351 #define FEC_VC_INTERFACEPARAM_MAXCATMCELLS 0x02
352 #define FEC_VC_INTERFACEPARAM_DESCRIPTION 0x03
353 #define FEC_VC_INTERFACEPARAM_CEMBYTES 0x04
354 #define FEC_VC_INTERFACEPARAM_CEMOPTIONS 0x05
357 static const value_string fec_vc_interfaceparm[] = {
358 {FEC_VC_INTERFACEPARAM_MTU, "MTU"},
359 {FEC_VC_INTERFACEPARAM_MAXCATMCELLS, "Max Concatenated ATM cells"},
360 {FEC_VC_INTERFACEPARAM_DESCRIPTION, "Interface Description"},
361 {FEC_VC_INTERFACEPARAM_CEMBYTES, "CEM Payload Bytes"},
362 {FEC_VC_INTERFACEPARAM_CEMOPTIONS, "CEM options"}
365 static const true_false_string fec_vc_cbit = {
366 "Contorl Word Present",
367 "Control Word NOT Present"
372 static const value_string tlv_atm_merge_vals[] = {
373 {0, "Merge not supported"},
374 {1, "VP merge supported"},
375 {2, "VC merge supported"},
376 {3, "VP & VC merge supported"},
380 static const value_string tlv_atm_vbits_vals[] = {
381 {0, "VPI & VCI Significant"},
382 {1, "Only VPI Significant"},
383 {2, "Only VCI Significant"},
384 {3, "VPI & VCI not Significant, nonsense"},
388 static const value_string tlv_fr_merge_vals[] = {
389 {0, "Merge not supported"},
390 {1, "Merge supported"},
396 static const value_string tlv_fr_len_vals[] = {
404 static const value_string ldp_act_flg_vals[] = {
405 {0, "indicates initial LSP setup"},
406 {1, "indicates modify LSP"},
410 static const value_string route_pinning_vals[] = {
411 {0, "route pinning is not requested"},
412 {1, "route pinning is requested"},
416 static const value_string ldp_loose_vals[] = {
422 static const true_false_string tlv_negotiable = {
427 static const value_string freq_values[] = {
434 static const true_false_string tlv_atm_dirbit = {
435 "Bidirectional capability",
436 "Unidirectional capability"
439 static const true_false_string hello_requested_vals = {
440 "Source requests periodic hellos",
441 "Source does not request periodic hellos"
444 static const true_false_string tlv_sess_advbit_vals = {
445 "Downstream On Demand proposed",
446 "Downstream Unsolicited proposed"
449 static const true_false_string tlv_sess_ldetbit_vals = {
450 "Loop Detection Enabled",
451 "Loop Detection Disabled"
454 static const true_false_string tlv_status_ebit = {
455 "Fatal Error Notification",
456 "Advisory Notification"
459 static const true_false_string tlv_status_fbit = {
460 "Notification should be Forwarded",
461 "Notification should NOT be Forwarded"
464 static const value_string tlv_status_data[] = {
466 {1, "Bad LDP Identifier"},
467 {2, "Bad Protocol Version"},
468 {3, "Bad PDU Length"},
469 {4, "Unknown Message Type"},
470 {5, "Bad Message Length"},
472 {7, "Bad TLV Length"},
473 {8, "Malformed TLV Value"},
474 {9, "Hold Timer Expired"},
476 {11, "Loop Detected"},
479 {14, "No Label Resources"},
480 {15, "Label Resources / Available"},
481 {16, "Session Rejected / No Hello"},
482 {17, "Session Rejected / Parameters Advertisement Mode"},
483 {18, "Session Rejected / Parameters Max PDU Length"},
484 {19, "Session Rejected / Parameters Label Range"},
485 {20, "KeepAlive Timer Expired"},
486 {21, "Label Request Aborted"},
487 {22, "Missing Message Parameters"},
488 {23, "Unsoported Address Family"},
489 {24, "Session Rejected / Bad KeepAlive Time"},
490 {25, "Internal Error"},
491 {0x01000001,"Unexpected Diff-Serv TLV"},
492 {0x01000002,"Unsupported PHB"},
493 {0x01000003,"Invalid EXP<->PHB Mapping"},
494 {0x01000004,"Unsupported PSC"},
495 {0x01000005,"Per-LSP context allocation failure"},
496 {0x04000001,"Bad Explicit Routing TLV Error"},
497 {0x04000002,"Bad Strict Node Error"},
498 {0x04000003,"Bad Strict Node Error"},
499 {0x04000004,"Bad Initial ER-Hop Error"},
500 {0x04000005,"Resource Unavailable"},
501 {0x04000006,"Traffic Parameters Unavailable"},
502 {0x04000007,"LSP Preempted"},
503 {0x04000008,"Modify Request Not Supported"},
504 {0x20000001,"Illegal C-Bit"},
505 {0x20000002,"Wrong C-Bit"},
509 /* Dissect FEC TLV */
512 dissect_tlv_fec(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
514 proto_tree *ti=NULL, *val_tree=NULL, *fec_tree=NULL, *vcintparam_tree=NULL;
515 guint16 family, ix=1, ax;
516 guint8 addr_size=0, *addr, implemented, prefix_len_octets, prefix_len, host_len, vc_len;
518 void *str_handler=NULL;
522 ti=proto_tree_add_text(tree, tvb, offset, rem, "FEC Elements");
523 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
524 if(val_tree == NULL) return;
527 switch (tvb_get_guint8(tvb, offset)) {
530 ti = proto_tree_add_text(val_tree, tvb, offset, 1, "FEC Element %u", ix);
531 fec_tree = proto_item_add_subtree(ti, ett_ldp_fec);
532 if(fec_tree == NULL) return;
533 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_wc,tvb, offset, 1, FALSE);
539 if( rem < 4 ){/*not enough*/
540 proto_tree_add_text(val_tree, tvb, offset, rem, "Error in FEC Element %u", ix);
543 family=tvb_get_ntohs(tvb, offset+1);
544 prefix_len=tvb_get_guint8(tvb, offset+3);
545 prefix_len_octets=(prefix_len+7)/8;
549 case AFNUM_INET: /*IPv4*/
551 str_handler=ip_to_str;
553 case AFNUM_INET6: /*IPv6*/
555 str_handler=ip6_to_str;
565 noctets= rem>4+prefix_len_octets?4+prefix_len_octets:rem;
566 proto_tree_add_text(val_tree, tvb, offset, noctets,"Support for Address Family not implemented");
572 if( rem < 4+MIN(addr_size, prefix_len_octets) ){
573 proto_tree_add_text(val_tree, tvb, offset, rem, "Error in FEC Element %u", ix);
577 /*Add a subtree for this*/
578 ti = proto_tree_add_text(val_tree, tvb, offset, 4+MIN(addr_size, prefix_len_octets), "FEC Element %u", ix);
579 fec_tree = proto_item_add_subtree(ti, ett_ldp_fec);
580 if(fec_tree == NULL) return;
581 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_wc, tvb, offset, 1, FALSE);
584 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_af, tvb, offset, 2, FALSE);
587 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_len, tvb, offset, 1, FALSE);
591 if( addr_size < prefix_len_octets) {
594 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"));
598 if( (addr=g_malloc0(addr_size)) == NULL ){
599 /*big big trouble, no mem or bad addr_size*/
600 fprintf(stderr, "packet-ldp: dissect_tlv_fec() malloc failed\n");
604 for(ax=0; ax+1 <= prefix_len_octets; ax++)
605 addr[ax]=tvb_get_guint8(tvb, offset+ax);
607 addr[ax-1] = addr[ax-1]&(0xFF<<(8-prefix_len%8));
609 str = (* (char* (*)(guint8 *))str_handler)(addr);
610 proto_tree_add_string_format(fec_tree, hf_ldp_tlv_fec_pfval, tvb, offset, prefix_len_octets, str, "Prefix: %s", str);
612 offset += prefix_len_octets;
613 rem -= 4+prefix_len_octets;
618 if( rem < 4 ){/*not enough*/
619 proto_tree_add_text(val_tree, tvb, offset, rem, "Error in FEC Element %u", ix);
622 family=tvb_get_ntohs(tvb, offset+1);
623 host_len=tvb_get_guint8(tvb, offset+3);
627 case AFNUM_INET: /*IPv4*/
629 str_handler=ip_to_str;
631 case AFNUM_INET6: /*IPv6*/
633 str_handler=ip6_to_str;
643 noctets= rem>4+host_len?4+host_len:rem;
644 proto_tree_add_text(val_tree, tvb, offset, noctets,"Support for Address Family not implemented");
650 if( rem < 4+addr_size ){
651 proto_tree_add_text(val_tree, tvb, offset, rem, "Error in FEC Element %u", ix);
655 /*Add a subtree for this*/
656 ti = proto_tree_add_text(val_tree, tvb, offset, 4+addr_size, "FEC Element %u", ix);
657 fec_tree = proto_item_add_subtree(ti, ett_ldp_fec);
658 if(fec_tree == NULL) return;
659 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_wc, tvb, offset, 1, FALSE);
662 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_af, tvb, offset, 2, FALSE);
665 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_len, tvb, offset, 1, FALSE);
669 if( addr_size != host_len) {
672 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"));
676 if( (addr=g_malloc0(addr_size)) == NULL ){
677 /*big big xtrouble, no mem or bad addr_size*/
678 fprintf(stderr, "packet-ldp: dissect_tlv_fec() malloc failed\n");
682 for(ax=0; ax+1 <= host_len; ax++)
683 addr[ax]=tvb_get_guint8(tvb, offset+ax);
685 str = (* (char* (*)(guint8 *))str_handler)(addr);
686 proto_tree_add_string_format(fec_tree, hf_ldp_tlv_fec_hoval, tvb, offset, host_len, str, "Address: %s", str);
694 if( rem < 8 ){/*not enough bytes for a minimal VC_FEC*/
695 proto_tree_add_text(val_tree, tvb, offset, rem, "Error in FEC Element %u", ix);
698 vc_len = tvb_get_guint8 (tvb, offset+3);
701 ti = proto_tree_add_text(val_tree, tvb, offset, 8+vc_len, "FEC Element %u", ix);
702 fec_tree = proto_item_add_subtree(ti, ett_ldp_fec);
703 if(fec_tree == NULL) return;
704 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_wc, tvb, offset, 1, FALSE);
705 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_vc_controlword, tvb, offset+1, 1, FALSE);
706 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_vc_vctype, tvb, offset+1, 2, FALSE);
707 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_vc_infolength, tvb, offset+3,1,FALSE);
708 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_vc_groupid,tvb, offset +4, 4, FALSE);
712 if ( (vc_len > 3) && ( rem > 3 ) ) { /* there is enough room for vcid */
713 proto_tree_add_item(fec_tree, hf_ldp_tlv_fec_vc_vcid,tvb, offset, 4, FALSE);
714 proto_item_append_text (ti," VCID: %u",tvb_get_ntohl(tvb,offset));
717 proto_tree_add_text(val_tree,tvb,offset +4, 8 +vc_len, "VC FEC size format error");
724 while ( (vc_len > 1) && (rem > 1) ) { /* enough to include id and length */
725 intparam_len = tvb_get_guint8(tvb, offset+1);
726 ti = proto_tree_add_text(fec_tree, tvb, offset, 4, "Interface Paramameter");
727 vcintparam_tree = proto_item_add_subtree(ti, ett_ldp_fec_vc_interfaceparam);
728 if(vcintparam_tree == NULL) return;
729 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_id,tvb,offset,1,FALSE);
730 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_length,tvb, offset+1, 1, FALSE);
731 if ( (vc_len -intparam_len) <0 && (rem -intparam_len) <0 ) { /* error condition */
732 proto_tree_add_text(vcintparam_tree, tvb, offset +2, MIN(vc_len,rem), "malformed data");
735 switch (tvb_get_guint8(tvb, offset)) {
736 case FEC_VC_INTERFACEPARAM_MTU:
737 proto_item_append_text(ti,": MTU %u", tvb_get_ntohs(tvb,offset+2));
738 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_mtu,tvb, offset+2, 2, FALSE);
740 case FEC_VC_INTERFACEPARAM_MAXCATMCELLS:
741 proto_item_append_text(ti,": Max ATM Concat Cells %u", tvb_get_ntohs(tvb,offset+2));
742 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_maxcatmcells,tvb, offset+2, 2, FALSE);
744 case FEC_VC_INTERFACEPARAM_DESCRIPTION:
745 proto_item_append_text(ti,": Description");
746 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_desc,tvb, offset+2, (intparam_len -2), FALSE);
748 case FEC_VC_INTERFACEPARAM_CEMBYTES:
749 proto_item_append_text(ti,": CEM Payload Bytes %u", tvb_get_ntohs(tvb,offset+2));
750 proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_cembytes,tvb, offset+2, 2, FALSE);
752 case FEC_VC_INTERFACEPARAM_CEMOPTIONS:
753 /* draft-malis-sonet-ces-mpls CEM options still undefined */
754 default: /* unknown */
755 proto_item_append_text(ti," unknown");
756 proto_tree_add_text(vcintparam_tree,tvb, offset+2, (intparam_len -2), "Unknown data");
761 vc_len -= intparam_len;
762 offset += intparam_len;
766 default: /* Unknown */
767 /* XXX - do all FEC's have a length that's a multiple of 4? */
768 /* Hmmm, don't think so. Will check. RJS. */
769 /* If we don't know its structure, we have to exit */
770 ti = proto_tree_add_text(val_tree, tvb, offset, 4, "FEC Element %u", ix);
771 fec_tree = proto_item_add_subtree(ti, ett_ldp_fec);
772 if(fec_tree == NULL) return;
773 proto_tree_add_text(fec_tree, tvb, offset, rem, "Unknown FEC TLV type");
781 /* Dissect Address List TLV */
784 dissect_tlv_address_list(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
786 proto_tree *ti = NULL, *val_tree = NULL;
788 guint8 addr_size, *addr;
794 proto_tree_add_text(tree, tvb, offset, rem,
795 "Error processing Address List TLV: length is %d, should be >= 2",
800 family=tvb_get_ntohs(tvb, offset);
801 proto_tree_add_item(tree, hf_ldp_tlv_addrl_addr_family, tvb,
804 case AFNUM_INET: /*IPv4*/
806 str_handler=ip_to_str;
808 case AFNUM_INET6: /*IPv6*/
810 str_handler=ip6_to_str;
813 proto_tree_add_text(tree, tvb, offset+2, rem-2,
814 "Support for Address Family not implemented");
819 ti=proto_tree_add_text(tree, tvb, offset, rem, "Addresses");
820 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
822 if(val_tree == NULL) return;
823 if( (addr=g_malloc(addr_size)) == NULL ){
825 fprintf(stderr, "packet-ldp: dissect_tlv_address_list() malloc failed\n");
829 for(ix=1; rem >= addr_size; ix++, offset += addr_size,
831 if( (tvb_memcpy(tvb, addr, offset, addr_size))
835 str = (* (char* (*)(guint8 *))str_handler)(addr);
836 proto_tree_add_string_format(val_tree,
837 hf_ldp_tlv_addrl_addr, tvb, offset, addr_size, str,
838 "Address %u: %s", ix, str);
841 proto_tree_add_text(val_tree, tvb, offset, rem,
842 "Error processing TLV: Extra data at end of address list");
847 /* Dissect Path Vector TLV */
850 dissect_tlv_path_vector(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
852 proto_tree *ti = NULL, *val_tree = NULL;
857 ti=proto_tree_add_text(tree, tvb, offset, rem, "LSR IDs");
858 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
860 if(val_tree == NULL) return;
862 for(ix=1; rem >= 4; ix++, offset += 4, rem -= 4) {
863 tvb_memcpy(tvb, (guint8 *)&addr, offset, 4);
864 proto_tree_add_ipv4_format(val_tree,
865 hf_ldp_tlv_pv_lsrid, tvb, offset, 4,
866 addr, "LSR Id %u: %s", ix,
867 ip_to_str((guint8 *)&addr));
870 proto_tree_add_text(val_tree, tvb, offset, rem,
871 "Error processing TLV: Extra data at end of path vector");
875 /* Dissect ATM Label TLV */
878 dissect_tlv_atm_label(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
880 proto_tree *ti = NULL, *val_tree = NULL;
885 proto_tree_add_text(tree, tvb, offset, rem,
886 "Error processing ATM Label TLV: length is %d, should be 4",
890 ti=proto_tree_add_text(tree, tvb, offset, rem, "ATM Label");
891 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
892 if(val_tree == NULL) return;
894 proto_tree_add_item(val_tree, hf_ldp_tlv_atm_label_vbits, tvb, offset, 1, FALSE);
896 id=tvb_get_ntohs(tvb, offset)&0x0FFF;
897 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_atm_label_vpi, tvb, offset, 2, id, "VPI: %u", id);
899 id=tvb_get_ntohs(tvb, offset+2);
900 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_atm_label_vci, tvb, offset+2, 2, id, "VCI: %u", id);
904 /* Dissect FRAME RELAY Label TLV */
907 dissect_tlv_frame_label(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
909 proto_tree *ti = NULL, *val_tree = NULL;
915 proto_tree_add_text(tree, tvb, offset, rem,
916 "Error processing Frame Relay Label TLV: length is %d, should be 4",
920 ti=proto_tree_add_text(tree, tvb, offset, rem, "Frame Relay Label");
921 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
922 if(val_tree == NULL) return;
924 len=(guint8)(tvb_get_ntohs(tvb, offset)>>7) & 0x03;
925 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);
927 id=tvb_get_ntoh24(tvb, offset+1)&0x7FFFFF;
928 proto_tree_add_uint_format(val_tree,
929 hf_ldp_tlv_fr_label_dlci, tvb, offset+1, 3, id, "DLCI: %u", id);
933 /* Dissect STATUS TLV */
936 dissect_tlv_status(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
938 proto_tree *ti = NULL, *val_tree = NULL;
943 proto_tree_add_text(tree, tvb, offset, rem,
944 "Error processing Status TLV: length is %d, should be 10",
949 ti=proto_tree_add_text(tree, tvb, offset, rem, "Status");
950 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
951 if(val_tree == NULL) return;
953 proto_tree_add_item(val_tree, hf_ldp_tlv_status_ebit, tvb, offset, 1, FALSE);
954 proto_tree_add_item(val_tree, hf_ldp_tlv_status_fbit, tvb, offset, 1, FALSE);
956 data=tvb_get_ntohl(tvb, offset)&0x3FFFFFFF;
957 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);
959 proto_tree_add_item(val_tree, hf_ldp_tlv_status_msg_id, tvb, offset+4, 4, FALSE);
960 proto_tree_add_item(val_tree, hf_ldp_tlv_status_msg_type, tvb, offset+8, 2, FALSE);
964 /* Dissect Returned PDU TLV */
967 dissect_tlv_returned_pdu(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
969 proto_tree *ti = NULL, *val_tree = NULL;
973 proto_tree_add_text(tree, tvb, offset, rem,
974 "Error processing Returned PDU TLV: length is %d, should be >= 10",
978 ti=proto_tree_add_text(tree, tvb, offset, rem, "Returned PDU");
979 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
980 if(val_tree == NULL) return;
982 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_version, tvb, offset, 2, FALSE);
983 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_pdu_len, tvb, offset+2, 2, FALSE);
984 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_lsr, tvb, offset+4, 4, FALSE);
985 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_ls_id, tvb, offset+8, 2, FALSE);
990 /*XXX - dissect returned pdu data*/
991 proto_tree_add_text(val_tree, tvb, offset, rem, "Returned PDU Data");
996 /* Dissect Returned MESSAGE TLV */
999 dissect_tlv_returned_message(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1001 proto_tree *ti = NULL, *val_tree = NULL;
1006 proto_tree_add_text(tree, tvb, offset, rem,
1007 "Error processing Returned Message TLV: length is %d, should be >= 4",
1011 ti=proto_tree_add_text(tree, tvb, offset, rem, "Returned Message");
1012 val_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
1013 if(val_tree == NULL) return;
1015 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_msg_ubit, tvb, offset, 1, FALSE);
1017 type=tvb_get_ntohs(tvb, offset)&0x7FFF;
1018 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);
1020 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_msg_len, tvb, offset+2, 2, FALSE);
1024 if( rem >= 4 ) { /*have msg_id*/
1025 proto_tree_add_item(val_tree, hf_ldp_tlv_returned_msg_id, tvb, offset, 4, FALSE);
1031 /*XXX - dissect returned msg parameters*/
1032 proto_tree_add_text(val_tree, tvb, offset, rem, "Returned Message Parameters");
1037 /* Dissect the common hello params */
1041 dissect_tlv_common_hello_parms(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1043 dissect_tlv_common_hello_parms(tvbuff_t *tvb, guint offset, proto_tree *tree)
1047 proto_tree *ti = NULL;
1049 proto_tree *val_tree = NULL;
1053 ti = proto_tree_add_item(tree, hf_ldp_tlv_value, tvb, offset, rem, FALSE);
1054 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1055 if(val_tree == NULL) return;
1059 proto_tree_add_item(val_tree, hf_ldp_tlv_val_hold, tvb, offset, 2, FALSE);
1060 proto_tree_add_item(val_tree, hf_ldp_tlv_val_target, tvb, offset + 2, 2, FALSE);
1061 proto_tree_add_item(val_tree, hf_ldp_tlv_val_request, tvb, offset + 2, 2, FALSE);
1062 proto_tree_add_item(val_tree, hf_ldp_tlv_val_res, tvb, offset + 2, 2, FALSE);
1066 /* Dissect the common session params */
1069 dissect_tlv_common_session_parms(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1071 proto_tree *ti = NULL, *val_tree = NULL;
1074 if( rem != 14) { /*length of Comm Sess Parms tlv*/
1075 proto_tree_add_text(tree, tvb, offset, rem,
1076 "Error processing Common Session Parameters TLV: length is %d, should be 14",
1080 ti = proto_tree_add_text(tree, tvb, offset, rem, "Parameters");
1081 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1083 if(val_tree != NULL) {
1084 /*Protocol Version*/
1085 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_ver, tvb,offset, 2, FALSE);
1088 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_ka, tvb,offset + 2, 2, FALSE);
1091 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_advbit,tvb, offset + 4, 1, FALSE);
1094 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_ldetbit,tvb, offset + 4, 1, FALSE);
1096 /*Path Vector Limit*/
1097 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_pvlim,tvb, offset + 5, 1, FALSE);
1100 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_mxpdu,tvb, offset + 6, 2, FALSE);
1103 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_rxlsr,tvb, offset + 8, 4, FALSE);
1106 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_rxls,tvb, offset + 12, 2, FALSE);
1111 /* Dissect the atm session params */
1114 dissect_tlv_atm_session_parms(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1116 proto_tree *ti = NULL, *val_tree = NULL, *lbl_tree = NULL;
1122 proto_tree_add_text(tree, tvb, offset, rem,
1123 "Error processing ATM Parameters TLV: length is %d, should be >= 4",
1128 ti = proto_tree_add_text(tree, tvb, offset, rem,"ATM Parameters");
1129 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1131 if(val_tree != NULL) {
1132 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_atm_merge,tvb, offset, 1, FALSE);
1134 /*get the number of label ranges*/
1135 numlr=(tvb_get_guint8(tvb, offset)>>2) & 0x0F;
1136 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_sess_atm_lr,
1137 tvb, offset, 1, numlr, "Number of Label Range components: %u",
1140 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_atm_dir,tvb, offset, 1, FALSE);
1142 /*move into range components*/
1145 ti = proto_tree_add_text(val_tree, tvb, offset, rem,"ATM Label Range Components");
1148 val_tree=proto_item_add_subtree(ti,ett_ldp_tlv_val);
1149 if( ! val_tree ) return;
1151 /*now dissect ranges*/
1152 for(ix=1; numlr > 0 && rem >= 8; ix++, rem-=8, numlr--) {
1153 ti=proto_tree_add_text(val_tree, tvb, offset, 8,
1154 "ATM Label Range Component %u", ix);
1155 lbl_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
1157 if( lbl_tree == NULL ) break;
1159 id=tvb_get_ntohs(tvb, offset)&0x0FFF;
1160 proto_tree_add_uint_format(lbl_tree,
1161 hf_ldp_tlv_sess_atm_minvpi,
1163 id, "Minimum VPI: %u", id);
1164 id=tvb_get_ntohs(tvb, offset+4)&0x0FFF;
1165 proto_tree_add_uint_format(lbl_tree,
1166 hf_ldp_tlv_sess_atm_maxvpi,
1167 tvb, (offset+4), 2, id,
1168 "Maximum VPI: %u", id);
1170 id=tvb_get_ntohs(tvb, offset+2);
1171 proto_tree_add_uint_format(lbl_tree,
1172 hf_ldp_tlv_sess_atm_minvci,
1174 id, "Minimum VCI: %u", id);
1175 id=tvb_get_ntohs(tvb, offset+6);
1176 proto_tree_add_uint_format(lbl_tree,
1177 hf_ldp_tlv_sess_atm_maxvci,
1179 id, "Maximum VCI: %u", id);
1184 proto_tree_add_text(val_tree, tvb, offset, rem,
1185 "Error processing TLV: Extra data at end of TLV");
1190 /* Dissect the frame relay session params */
1193 dissect_tlv_frame_relay_session_parms(tvbuff_t *tvb, guint offset,proto_tree *tree, int rem)
1195 proto_tree *ti = NULL, *val_tree = NULL, *lbl_tree = NULL;
1196 guint8 numlr, ix, len;
1201 proto_tree_add_text(tree, tvb, offset, rem,
1202 "Error processing Frame Relay Parameters TLV: length is %d, should be >= 4",
1207 ti = proto_tree_add_text(tree, tvb, offset, rem,
1208 "Frame Relay Parameters");
1209 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1211 if(val_tree != NULL) {
1212 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_fr_merge,
1213 tvb, offset, 1, FALSE);
1215 /*get the number of label ranges*/
1216 numlr=(tvb_get_guint8(tvb, offset)>>2) & 0x0F;
1217 proto_tree_add_uint_format(val_tree, hf_ldp_tlv_sess_fr_lr,
1218 tvb, offset, 1, numlr, "Number of Label Range components: %u",
1221 proto_tree_add_item(val_tree, hf_ldp_tlv_sess_fr_dir,
1222 tvb, offset, 1, FALSE);
1224 /*move into range components*/
1227 ti = proto_tree_add_text(val_tree, tvb, offset, rem,
1228 "Frame Relay Label Range Components");
1231 val_tree=proto_item_add_subtree(ti,
1233 if( ! val_tree ) return;
1236 /*now dissect ranges*/
1237 for(ix=1; numlr > 0 && rem >= 8; ix++, rem-=8, numlr--) {
1238 ti=proto_tree_add_text(val_tree, tvb, offset, 8,
1239 "Frame Relay Label Range Component %u", ix);
1240 lbl_tree=proto_item_add_subtree(ti, ett_ldp_tlv_val);
1242 if( lbl_tree == NULL ) break;
1244 len=(guint8)(tvb_get_ntohs(tvb, offset)>>7) & 0x03;
1245 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);
1247 id=tvb_get_ntoh24(tvb, offset+1)&0x7FFFFF;
1248 proto_tree_add_uint_format(lbl_tree,
1249 hf_ldp_tlv_sess_fr_mindlci, tvb, offset+1, 3, id, "Minimum DLCI %u", id);
1250 id=tvb_get_ntoh24(tvb, offset+5)&0x7FFFFF;
1251 proto_tree_add_uint_format(lbl_tree,
1252 hf_ldp_tlv_sess_fr_maxdlci, tvb, offset+5, 3, id, "Maximum DLCI %u", id);
1258 proto_tree_add_text(val_tree, tvb, offset, rem,
1259 "Error processing TLV: Extra data at end of TLV");
1266 dissect_tlv_lspid(tvbuff_t *tvb, guint offset,proto_tree *tree, int rem)
1268 proto_tree *ti = NULL, *val_tree = NULL;
1272 proto_tree_add_text(tree, tvb, offset, rem,
1273 "Error processing LSP ID TLV: length is %d, should be 8",
1278 ti = proto_tree_add_text(tree, tvb, offset, rem,
1280 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1282 if(val_tree != NULL) {
1283 proto_tree_add_item(val_tree, hf_ldp_tlv_lspid_act_flg,
1284 tvb, offset, 2, FALSE);
1286 proto_tree_add_item(val_tree, hf_ldp_tlv_lspid_cr_lsp,
1287 tvb, offset, 2, FALSE);
1289 proto_tree_add_item(val_tree, hf_ldp_tlv_lspid_ldpid,
1290 tvb, offset, 4, FALSE);
1296 dissect_tlv_er_hop_ipv4(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1298 proto_tree *ti = NULL, *val_tree = NULL;
1303 proto_tree_add_text(tree, tvb, offset, rem,
1304 "Error processing ER HOP IPv4 TLV: length is %d, should be 8",
1308 ti = proto_tree_add_text(tree, tvb, offset, rem, "ER HOP IPv4");
1309 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1311 if(val_tree != NULL) {
1312 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_loose,
1313 tvb, offset, 3, FALSE);
1315 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_prelen,
1316 tvb, offset, 1, FALSE);
1318 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_prefix4,
1319 tvb, offset, 4, FALSE);
1325 dissect_tlv_er_hop_ipv6(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1327 proto_tree *ti = NULL, *val_tree = NULL;
1331 proto_tree_add_text(tree, tvb, offset, rem,
1332 "Error processing ER HOP IPv6 TLV: length is %d, should be 20",
1336 ti = proto_tree_add_text(tree, tvb, offset, rem, "ER HOP IPv6");
1337 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1339 if(val_tree != NULL) {
1340 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_loose,
1341 tvb, offset, 3, FALSE);
1343 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_prelen,
1344 tvb, offset, 1, FALSE);
1346 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_prefix6,
1347 tvb, offset, 16, FALSE);
1353 dissect_tlv_er_hop_as(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1355 proto_tree *ti = NULL, *val_tree = NULL;
1359 proto_tree_add_text(tree, tvb, offset, rem,
1360 "Error processing ER HOP AS TLV: length is %d, should be 4",
1364 ti = proto_tree_add_text(tree, tvb, offset, rem, "ER HOP AS");
1365 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1367 if(val_tree != NULL) {
1368 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_loose,
1369 tvb, offset, 2, FALSE);
1371 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_as,
1372 tvb, offset, 2, FALSE);
1378 dissect_tlv_er_hop_lspid(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1380 proto_tree *ti = NULL, *val_tree = NULL;
1384 proto_tree_add_text(tree, tvb, offset, rem,
1385 "Error processing ER HOP LSPID TLV: length is %d, should be 8",
1389 ti = proto_tree_add_text(tree, tvb, offset, rem, "ER HOP LSPID");
1390 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1392 if(val_tree != NULL) {
1393 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_loose,
1394 tvb, offset, 2, FALSE);
1396 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_cr_lsp,
1397 tvb, offset, 2, FALSE);
1399 proto_tree_add_item(val_tree, hf_ldp_tlv_er_hop_ldpid,
1400 tvb, offset, 4, FALSE);
1406 dissect_tlv_traffic(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1408 proto_tree *ti = NULL, *val_tree = NULL;
1415 proto_tree_add_text(tree, tvb, offset, rem,
1416 "Error processing Traffic Parameters TLV: length is %d, should be 24",
1420 ti = proto_tree_add_text(tree, tvb, offset, rem, "Traffic parameters");
1421 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1423 if(val_tree != NULL) {
1425 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_reserv, tvb, offset, 1, FALSE);
1426 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_weight, tvb, offset, 1, FALSE);
1427 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_ebs, tvb, offset, 1, FALSE);
1428 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_cbs, tvb, offset, 1, FALSE);
1429 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_cdr, tvb, offset, 1, FALSE);
1430 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_pbs, tvb, offset, 1, FALSE);
1431 proto_tree_add_item(val_tree, hf_ldp_tlv_flags_pdr, tvb, offset, 1, FALSE);
1435 proto_tree_add_item(val_tree, hf_ldp_tlv_frequency, tvb, offset, 1, FALSE);
1442 pi = proto_tree_add_item(val_tree, hf_ldp_tlv_weight, tvb, offset, 1, FALSE);
1443 val_8 = tvb_get_guint8(tvb, offset);
1445 proto_item_set_text(pi, "Weight: Not applicable");
1449 val_f = tvb_get_ntohieee_float (tvb, offset);
1450 proto_tree_add_double_format(val_tree, hf_ldp_tlv_pdr, tvb, offset,
1451 4, val_f, "PDR: %.10g Bps", val_f);
1454 val_f = tvb_get_ntohieee_float (tvb, offset);
1455 proto_tree_add_double_format(val_tree, hf_ldp_tlv_pbs, tvb, offset,
1456 4, val_f, "PBS: %.10g Bytes", val_f);
1460 val_f = tvb_get_ntohieee_float (tvb, offset);
1461 proto_tree_add_double_format(val_tree, hf_ldp_tlv_cdr, tvb, offset,
1462 4, val_f, "CDR: %.10g Bps", val_f);
1466 val_f = tvb_get_ntohieee_float (tvb, offset);
1467 proto_tree_add_double_format(val_tree, hf_ldp_tlv_cbs, tvb, offset,
1468 4, val_f, "CBS: %.10g Bytes", val_f);
1472 val_f = tvb_get_ntohieee_float (tvb, offset);
1473 proto_tree_add_double_format(val_tree, hf_ldp_tlv_ebs, tvb, offset,
1474 4, val_f, "EBS: %.10g Bytes", val_f);
1481 dissect_tlv_route_pinning(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1483 proto_tree *ti = NULL, *val_tree = NULL;
1487 proto_tree_add_text(tree, tvb, offset, rem,
1488 "Error processing Route Pinning TLV: length is %d, should be 4",
1492 ti = proto_tree_add_text(tree, tvb, offset, rem, "Route Pinning");
1493 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1495 if(val_tree != NULL) {
1496 proto_tree_add_item(val_tree, hf_ldp_tlv_route_pinning,
1497 tvb, offset, 4, FALSE);
1504 dissect_tlv_resource_class(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1506 proto_tree *ti = NULL, *val_tree = NULL;
1510 proto_tree_add_text(tree, tvb, offset, rem,
1511 "Error processing Resource Class TLV: length is %d, should be 4",
1515 ti = proto_tree_add_text(tree, tvb, offset, rem, "Resource Class");
1516 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1518 if(val_tree != NULL) {
1519 proto_tree_add_item(val_tree, hf_ldp_tlv_resource_class,
1520 tvb, offset, 4, FALSE);
1527 dissect_tlv_preemption(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1529 proto_tree *ti = NULL, *val_tree = NULL;
1533 proto_tree_add_text(tree, tvb, offset, rem,
1534 "Error processing Preemption TLV: length is %d, should be 4",
1538 ti = proto_tree_add_text(tree, tvb, offset, rem, "Preemption");
1539 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1541 if(val_tree != NULL) {
1542 proto_tree_add_item(val_tree, hf_ldp_tlv_set_prio,
1543 tvb, offset, 1, FALSE);
1545 proto_tree_add_item(val_tree, hf_ldp_tlv_hold_prio,
1546 tvb, offset, 1, FALSE);
1552 dissect_tlv(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem);
1555 dissect_tlv_er(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1557 proto_tree *ti = NULL, *val_tree = NULL;
1561 ti = proto_tree_add_text(tree, tvb, offset, rem, "Explicit route");
1562 val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
1564 if(val_tree != NULL) {
1567 len = dissect_tlv (tvb, offset, val_tree, rem);
1576 /* Dissect a TLV and return the number of bytes consumed ... */
1579 dissect_tlv(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
1581 guint16 type, typebak;
1583 proto_tree *ti = NULL, *tlv_tree = NULL;
1585 length=tvb_reported_length_remaining(tvb, offset);
1586 rem=MIN(rem, length);
1588 if( rem < 4 ) {/*chk for minimum header*/
1590 proto_tree_add_text(tree, tvb, offset, rem,
1591 "Error processing TLV: length is %d, should be >= 4",
1595 type = tvb_get_ntohs(tvb, offset) & 0x3FFF;
1597 length = tvb_get_ntohs(tvb, offset + 2),
1598 rem -= 4; /*do not count header*/
1599 length = MIN(length, rem); /* Don't go haywire if a problem ... */
1602 /*chk for vendor-private*/
1603 if(type>=TLV_VENDOR_PRIVATE_START && type<=TLV_VENDOR_PRIVATE_END){
1604 typebak=type; /*keep type*/
1605 type=TLV_VENDOR_PRIVATE_START;
1607 /*chk for experimental*/
1608 } else if(type>=TLV_EXPERIMENTAL_START && type<=TLV_EXPERIMENTAL_END){
1609 typebak=type; /*keep type*/
1610 type=TLV_EXPERIMENTAL_START;
1613 ti = proto_tree_add_text(tree, tvb, offset, length + 4, "%s",
1614 val_to_str(type, tlv_type_names, "Unknown TLV type (0x%04X)"));
1615 tlv_tree = proto_item_add_subtree(ti, ett_ldp_tlv);
1616 if(tlv_tree == NULL) return length+4;
1618 proto_tree_add_item(tlv_tree, hf_ldp_tlv_unknown, tvb, offset, 1, FALSE);
1620 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 );
1622 proto_tree_add_item(tlv_tree, hf_ldp_tlv_len, tvb, offset + 2, 2, FALSE);
1627 dissect_tlv_fec(tvb, offset + 4, tlv_tree, length);
1630 case TLV_ADDRESS_LIST:
1631 dissect_tlv_address_list(tvb, offset + 4, tlv_tree, length);
1635 if( length != 1 ) /*error, only one byte*/
1636 proto_tree_add_text(tlv_tree, tvb, offset + 4,length,
1637 "Error processing Hop Count TLV: length is %d, should be 1",
1640 proto_tree_add_item(tlv_tree, hf_ldp_tlv_hc_value, tvb,offset + 4, length, FALSE);
1643 case TLV_PATH_VECTOR:
1644 dissect_tlv_path_vector(tvb, offset + 4, tlv_tree, length);
1647 case TLV_GENERIC_LABEL:
1648 if( length != 4 ) /*error, need only label*/
1649 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1650 "Error processing Generic Label TLV: length is %d, should be 4",
1653 guint32 label=tvb_get_ntohl(tvb, offset+4) & 0x000FFFFF;
1655 proto_tree_add_uint_format(tlv_tree, hf_ldp_tlv_generic_label,
1656 tvb, offset+4, length, label, "Generic Label: %u", label);
1661 dissect_tlv_atm_label(tvb, offset + 4, tlv_tree, length);
1664 case TLV_FRAME_LABEL:
1665 dissect_tlv_frame_label(tvb, offset + 4, tlv_tree, length);
1669 dissect_tlv_status(tvb, offset + 4, tlv_tree, length);
1672 case TLV_EXTENDED_STATUS:
1673 if( length != 4 ) /*error, need only status_code(guint32)*/
1674 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1675 "Error processing Extended Status TLV: length is %d, should be 4",
1678 proto_tree_add_item(tlv_tree, hf_ldp_tlv_extstatus_data, tvb, offset + 4, length, FALSE);
1682 case TLV_RETURNED_PDU:
1683 dissect_tlv_returned_pdu(tvb, offset + 4, tlv_tree, length);
1686 case TLV_RETURNED_MESSAGE:
1687 dissect_tlv_returned_message(tvb, offset + 4, tlv_tree, length);
1690 case TLV_COMMON_HELLO_PARMS:
1692 dissect_tlv_common_hello_parms(tvb, offset + 4, tlv_tree, length);
1694 dissect_tlv_common_hello_parms(tvb, offset + 4, tlv_tree);
1698 case TLV_IPV4_TRANSPORT_ADDRESS:
1699 if( length != 4 ) /*error, need only ipv4*/
1700 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1701 "Error processing IPv4 Transport Address TLV: length is %d, should be 4",
1704 proto_tree_add_item(tlv_tree, hf_ldp_tlv_ipv4_taddr, tvb, offset + 4, 4, FALSE);
1708 case TLV_CONFIGURATION_SEQNO:
1709 if( length != 4 ) /*error, need only seq_num(guint32)*/
1710 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1711 "Error processing Configuration Sequence Number TLV: length is %d, should be 4",
1714 proto_tree_add_item(tlv_tree, hf_ldp_tlv_config_seqno, tvb, offset + 4, 4, FALSE);
1718 case TLV_IPV6_TRANSPORT_ADDRESS:
1719 if( length != 16 ) /*error, need only ipv6*/
1720 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1721 "Error processing IPv6 Transport Address TLV: length is %d, should be 16",
1724 proto_tree_add_item(tlv_tree, hf_ldp_tlv_ipv6_taddr, tvb, offset + 4, 16, FALSE);
1728 case TLV_COMMON_SESSION_PARMS:
1729 dissect_tlv_common_session_parms(tvb, offset + 4, tlv_tree, length);
1732 case TLV_ATM_SESSION_PARMS:
1733 dissect_tlv_atm_session_parms(tvb, offset + 4, tlv_tree, length);
1736 case TLV_FRAME_RELAY_SESSION_PARMS:
1737 dissect_tlv_frame_relay_session_parms(tvb, offset + 4, tlv_tree, length);
1740 case TLV_LABEL_REQUEST_MESSAGE_ID:
1741 if( length != 4 ) /*error, need only one msgid*/
1742 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1743 "Error processing Label Request Message ID TLV: length is %d, should be 4",
1746 proto_tree_add_item(tlv_tree, hf_ldp_tlv_lbl_req_msg_id, tvb,offset + 4,length, FALSE);
1750 dissect_tlv_lspid(tvb, offset + 4, tlv_tree, length);
1754 dissect_tlv_er(tvb, offset + 4, tlv_tree, length);
1757 case TLV_ER_HOP_IPV4:
1758 dissect_tlv_er_hop_ipv4(tvb, offset + 4, tlv_tree, length);
1761 case TLV_ER_HOP_IPV6:
1762 dissect_tlv_er_hop_ipv6(tvb, offset +4, tlv_tree, length);
1766 dissect_tlv_er_hop_as(tvb, offset + 4, tlv_tree, length);
1769 case TLV_ER_HOP_LSPID:
1770 dissect_tlv_er_hop_lspid(tvb, offset +4, tlv_tree, length);
1773 case TLV_TRAFFIC_PARAM:
1774 dissect_tlv_traffic(tvb, offset +4, tlv_tree, length);
1777 case TLV_PREEMPTION:
1778 dissect_tlv_preemption(tvb, offset +4, tlv_tree, length);
1781 case TLV_RESOURCE_CLASS:
1782 dissect_tlv_resource_class(tvb, offset +4, tlv_tree, length);
1785 case TLV_ROUTE_PINNING:
1786 dissect_tlv_route_pinning(tvb, offset +4, tlv_tree, length);
1789 case TLV_VENDOR_PRIVATE_START:
1790 if( length < 4 ) /*error, at least Vendor ID*/
1791 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1792 "Error processing Vendor Private Start TLV: length is %d, should be >= 4",
1795 proto_tree_add_item(tlv_tree, hf_ldp_tlv_vendor_id, tvb,offset + 4, 4, FALSE);
1796 if( length > 4 ) /*have data*/
1797 proto_tree_add_text(tlv_tree, tvb, offset + 8, length-4,"Data");
1801 case TLV_EXPERIMENTAL_START:
1802 if( length < 4 ) /*error, at least Experiment ID*/
1803 proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
1804 "Error processing Experimental Start TLV: length is %d, should be >= 4",
1807 proto_tree_add_item(tlv_tree, hf_ldp_tlv_experiment_id, tvb,offset + 4, 4, FALSE);
1808 if( length > 4 ) /*have data*/
1809 proto_tree_add_text(tlv_tree, tvb, offset + 8, length-4,"Data");
1814 proto_tree_add_item(tlv_tree, hf_ldp_tlv_value, tvb, offset + 4, length, FALSE);
1819 return length + 4; /* Length of the value field + header */
1823 /* Dissect a Message and return the number of bytes consumed ... */
1826 dissect_msg(tvbuff_t *tvb, guint offset, packet_info *pinfo, proto_tree *tree)
1828 guint16 type, typebak;
1830 int length, rem, ao=0, co;
1831 proto_tree *ti = NULL, *msg_tree = NULL;
1833 rem=tvb_reported_length_remaining(tvb, offset);
1835 if( rem < 8 ) {/*chk for minimum header = type + length + msg_id*/
1836 if( check_col(pinfo->cinfo, COL_INFO) )
1837 col_append_fstr(pinfo->cinfo, COL_INFO, "Bad Message");
1839 proto_tree_add_text(tree, tvb, offset, rem,
1840 "Error processing Message: length is %d, should be >= 8",
1844 type = tvb_get_ntohs(tvb, offset) & 0x7FFF;
1846 /*chk for vendor-private*/
1847 if(type>=LDP_VENDOR_PRIVATE_START && type<=LDP_VENDOR_PRIVATE_END){
1848 typebak=type; /*keep type*/
1849 type=LDP_VENDOR_PRIVATE_START;
1851 /*chk for experimental*/
1852 } else if(type>=LDP_EXPERIMENTAL_MESSAGE_START && type<=LDP_EXPERIMENTAL_MESSAGE_END){
1853 typebak=type; /*keep type*/
1854 type=LDP_EXPERIMENTAL_MESSAGE_START;
1858 if( (length = tvb_get_ntohs(tvb, offset + 2)) < (4+extra) ) {/*not enough data for type*/
1859 if( check_col(pinfo->cinfo, COL_INFO) )
1860 col_append_fstr(pinfo->cinfo, COL_INFO, "Bad Message Length ");
1862 proto_tree_add_text(tree, tvb, offset, rem,
1863 "Error processing Message Length: length is %d, should be >= %u",
1868 length = MIN(length, rem); /* Don't go haywire if a problem ... */
1870 if( check_col(pinfo->cinfo, COL_INFO) ){
1871 col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(type, ldp_message_types, "Unknown Message (0x%04X)"));
1875 ti = proto_tree_add_text(tree, tvb, offset, length + 4, "%s",
1876 val_to_str(type, ldp_message_types, "Unknown Message type (0x%04X)"));
1877 msg_tree = proto_item_add_subtree(ti, ett_ldp_message);
1878 if(msg_tree == NULL) return length+4;
1880 proto_tree_add_item(msg_tree, hf_ldp_msg_ubit, tvb, offset, 1, FALSE);
1882 type=tvb_get_ntohs(tvb, offset)&0x7FFF;
1883 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);
1885 proto_tree_add_item(msg_tree, hf_ldp_msg_len, tvb, offset+2, 2, FALSE);
1886 proto_tree_add_item(msg_tree, hf_ldp_msg_id, tvb, offset+4, 4, FALSE);
1891 case LDP_VENDOR_PRIVATE_START:
1892 hf_tmp=hf_ldp_msg_vendor_id;
1894 case LDP_EXPERIMENTAL_MESSAGE_START:
1895 hf_tmp=hf_ldp_msg_experiment_id;
1898 proto_tree_add_item(msg_tree, hf_tmp, tvb, offset+8, extra, FALSE);
1902 offset += (8+extra);
1903 length -= (4+extra);
1906 while( (length-ao) > 0 ) {
1907 co=dissect_tlv(tvb, offset, msg_tree, length-ao);
1912 return length+8+extra;
1917 dissect_ldp_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
1921 proto_tree *ti=NULL, *pdu_tree = NULL;
1923 if (check_col(pinfo->cinfo, COL_PROTOCOL))
1924 col_set_str(pinfo->cinfo, COL_PROTOCOL, "LDP");
1926 if (check_col(pinfo->cinfo, COL_INFO))
1927 col_clear(pinfo->cinfo, COL_INFO);
1930 ti=proto_tree_add_item(tree, proto_ldp, tvb, 0, -1, FALSE);
1931 pdu_tree = proto_item_add_subtree(ti, ett_ldp);
1933 proto_tree_add_item(pdu_tree, hf_ldp_version, tvb, offset, 2, FALSE);
1936 length = tvb_get_ntohs(tvb, offset+2);
1938 proto_tree_add_uint(pdu_tree, hf_ldp_pdu_len, tvb, offset+2, 2, length);
1940 length += 4; /* add the version and type sizes */
1941 rem = tvb_reported_length_remaining(tvb, offset);
1943 tvb_set_reported_length(tvb, length);
1946 proto_tree_add_item(pdu_tree, hf_ldp_lsr, tvb, offset+4, 4, FALSE);
1947 proto_tree_add_item(pdu_tree, hf_ldp_ls_id, tvb, offset+8, 2, FALSE);
1951 while( tvb_reported_length_remaining(tvb, offset) > 0 ) {
1952 co=dissect_msg(tvb, offset, pinfo, pdu_tree);
1958 dissect_ldp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
1961 * Make sure the first PDU has a version number of 1;
1962 * if not, reject this, so we don't get confused by
1963 * packets that happen to be going to or from the
1964 * LDP port but that aren't LDP packets.
1966 if (!tvb_bytes_exist(tvb, 0, 2)) {
1968 * Not enough information to tell.
1972 if (tvb_get_ntohs(tvb, 0) != 1) {
1979 dissect_ldp_pdu(tvb, pinfo, tree);
1982 * XXX - return minimum of this and the length of the PDU?
1984 return tvb_length(tvb);
1988 dissect_ldp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
1990 volatile gboolean first = TRUE;
1991 volatile int offset = 0;
1992 int length_remaining;
1997 while (tvb_reported_length_remaining(tvb, offset) != 0) {
1998 length_remaining = tvb_length_remaining(tvb, offset);
2001 * Make sure the first PDU has a version number of 1;
2002 * if not, reject this, so we don't get confused by
2003 * packets that happen to be going to or from the
2004 * LDP port but that aren't LDP packets.
2006 * XXX - this means we can't handle an LDP PDU of which
2007 * only one byte appears in a TCP segment. If that's
2008 * a problem, we'll either have to completely punt on
2009 * rejecting non-LDP packets, or will have to assume
2010 * that if we have only one byte, it's an LDP packet.
2013 if (length_remaining < 2) {
2015 * Not enough information to tell.
2019 if (tvb_get_ntohs(tvb, offset) != 1) {
2029 * Can we do reassembly?
2031 if (ldp_desegment && pinfo->can_desegment) {
2033 * Yes - is the LDP header split across segment
2036 if (length_remaining < 4) {
2038 * Yes. Tell the TCP dissector where
2039 * the data for this message starts in
2040 * the data it handed us, and how many
2041 * more bytes we need, and return.
2043 pinfo->desegment_offset = offset;
2044 pinfo->desegment_len = 4 - length_remaining;
2045 return -pinfo->desegment_len;
2050 * Get the length of the rest of the LDP packet.
2051 * XXX - check for a version of 1 first?
2053 plen = tvb_get_ntohs(tvb, offset + 2);
2056 * Can we do reassembly?
2058 if (ldp_desegment && pinfo->can_desegment) {
2060 * Yes - is the LDP packet split across segment
2063 if (length_remaining < plen + 4) {
2065 * Yes. Tell the TCP dissector where the
2066 * data for this message starts in the data
2067 * it handed us, and how many more bytes we
2070 pinfo->desegment_offset = offset;
2071 pinfo->desegment_len =
2072 (plen + 4) - length_remaining;
2073 return -pinfo->desegment_len;
2078 * Construct a tvbuff containing the amount of the payload
2079 * we have available. Make its reported length the
2080 * amount of data in the DNS-over-TCP packet.
2082 * XXX - if reassembly isn't enabled. the subdissector
2083 * will throw a BoundsError exception, rather than a
2084 * ReportedBoundsError exception. We really want
2085 * a tvbuff where the length is "length", the reported
2086 * length is "plen + 4", and the "if the snapshot length
2087 * were infinite" length is the minimum of the
2088 * reported length of the tvbuff handed to us and "plen+4",
2089 * with a new type of exception thrown if the offset is
2090 * within the reported length but beyond that third length,
2091 * with that exception getting the "Unreassembled Packet"
2094 length = length_remaining;
2095 if (length > plen + 4)
2097 next_tvb = tvb_new_subset(tvb, offset, length, plen + 4);
2100 * Dissect the LDP packet.
2102 * Catch the ReportedBoundsError exception; if this
2103 * particular message happens to get a ReportedBoundsError
2104 * exception, that doesn't mean that we should stop
2105 * dissecting LDP messages within this frame or chunk of
2108 * If it gets a BoundsError, we can stop, as there's nothing
2109 * more to see, so we just re-throw it.
2112 dissect_ldp_pdu(next_tvb, pinfo, tree);
2114 CATCH(BoundsError) {
2117 CATCH(ReportedBoundsError) {
2118 show_reported_bounds_error(tvb, pinfo, tree);
2123 * Skip the LDP header and the payload.
2127 return tvb_length(tvb);
2130 /* Register all the bits needed with the filtering engine */
2133 proto_register_ldp(void)
2135 static hf_register_info hf[] = {
2137 /* Change the following to the type you need */
2138 { "Request", "ldp.req", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "", HFILL }},
2141 { "Response", "ldp.rsp", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "", HFILL }},
2144 { "Version", "ldp.hdr.version", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP Version Number", HFILL }},
2147 { "PDU Length", "ldp.hdr.pdu_len", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP PDU Length", HFILL }},
2150 { "LSR ID", "ldp.hdr.ldpid.lsr", FT_IPv4, BASE_HEX, NULL, 0x0, "LDP Label Space Router ID", HFILL }},
2153 { "Label Space ID", "ldp.hdr.ldpid.lsid", FT_UINT16, BASE_DEC, NULL, 0, "LDP Label Space ID", HFILL }},
2156 { "U bit", "ldp.msg.ubit", FT_BOOLEAN, 8, TFS(&ldp_message_ubit), 0x80, "Unknown Message Bit", HFILL }},
2159 { "Message Type", "ldp.msg.type", FT_UINT16, BASE_HEX, VALS(ldp_message_types), 0x7FFF, "LDP message type", HFILL }},
2162 { "Message Length", "ldp.msg.len", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP Message Length (excluding message type and len)", HFILL }},
2165 { "Message ID", "ldp.msg.id", FT_UINT32, BASE_HEX, NULL, 0x0, "LDP Message ID", HFILL }},
2167 { &hf_ldp_msg_vendor_id,
2168 { "Vendor ID", "ldp.msg.vendor.id", FT_UINT32, BASE_HEX, NULL, 0x0, "LDP Vendor-private Message ID", HFILL }},
2170 { &hf_ldp_msg_experiment_id,
2171 { "Experiment ID", "ldp.msg.experiment.id", FT_UINT32, BASE_HEX, NULL, 0x0, "LDP Experimental Message ID", HFILL }},
2173 { &hf_ldp_tlv_unknown,
2174 { "TLV Unknown bits", "ldp.msg.tlv.unknown", FT_UINT8, BASE_HEX, VALS(tlv_unknown_vals), 0xC0, "TLV Unknown bits Field", HFILL }},
2177 { "TLV Type", "ldp.msg.tlv.type", FT_UINT16, BASE_HEX, VALS(tlv_type_names), 0x3FFF, "TLV Type Field", HFILL }},
2180 {"TLV Length", "ldp.msg.tlv.len", FT_UINT16, BASE_DEC, NULL, 0x0, "TLV Length Field", HFILL }},
2182 { &hf_ldp_tlv_value,
2183 { "TLV Value", "ldp.msg.tlv.value", FT_BYTES, BASE_NONE, NULL, 0x0, "TLV Value Bytes", HFILL }},
2185 { &hf_ldp_tlv_val_hold,
2186 { "Hold Time", "ldp.msg.tlv.hello.hold", FT_UINT16, BASE_DEC, NULL, 0x0, "Hello Common Parameters Hold Time", HFILL }},
2188 { &hf_ldp_tlv_val_target,
2189 { "Targeted Hello", "ldp.msg.tlv.hello.targeted", FT_BOOLEAN, 16, TFS(&hello_targeted_vals), 0x8000, "Hello Common Parameters Targeted Bit", HFILL }},
2191 { &hf_ldp_tlv_val_request,
2192 { "Hello Requested", "ldp,msg.tlv.hello.requested", FT_BOOLEAN, 16, TFS(&hello_requested_vals), 0x4000, "Hello Common Parameters Hello Requested Bit", HFILL }},
2194 { &hf_ldp_tlv_val_res,
2195 { "Reserved", "ldp.msg.tlv.hello.res", FT_UINT16, BASE_HEX, NULL, 0x3FFF, "Hello Common Parameters Reserved Field", HFILL }},
2197 { &hf_ldp_tlv_ipv4_taddr,
2198 { "IPv4 Transport Address", "ldp.msg.tlv.ipv4.taddr", FT_IPv4, BASE_DEC, NULL, 0x0, "IPv4 Transport Address", HFILL }},
2200 { &hf_ldp_tlv_config_seqno,
2201 { "Configuration Sequence Number", "ldp.msg.tlv.hello.cnf_seqno", FT_UINT32, BASE_DEC, NULL, 0x0, "Hello Configuration Sequence Number", HFILL }},
2203 { &hf_ldp_tlv_ipv6_taddr,
2204 { "IPv6 Transport Address", "ldp.msg.tlv.ipv6.taddr", FT_IPv6, BASE_DEC, NULL, 0x0, "IPv6 Transport Address", HFILL }},
2206 { &hf_ldp_tlv_fec_wc,
2207 { "FEC Element Type", "ldp.msg.tlv.fec.type", FT_UINT8, BASE_DEC, VALS(fec_types), 0x0, "Forwarding Equivalence Class Element Types", HFILL }},
2209 { &hf_ldp_tlv_fec_af,
2210 { "FEC Element Address Type", "ldp.msg.tlv.fec.af", FT_UINT16, BASE_DEC, VALS(afn_vals), 0x0, "Forwarding Equivalence Class Element Address Family", HFILL }},
2212 { &hf_ldp_tlv_fec_len,
2213 { "FEC Element Length", "ldp.msg.tlv.fec.len", FT_UINT8, BASE_DEC, NULL, 0x0, "Forwarding Equivalence Class Element Length", HFILL }},
2215 { &hf_ldp_tlv_fec_pfval,
2216 { "FEC Element Prefix Value", "ldp.msg.tlv.fec.pfval", FT_STRING, BASE_NONE, NULL, 0x0, "Forwarding Equivalence Class Element Prefix", HFILL }},
2218 { &hf_ldp_tlv_fec_hoval,
2219 { "FEC Element Host Address Value", "ldp.msg.tlv.fec.hoval", FT_STRING, BASE_NONE, NULL, 0x0, "Forwarding Equivalence Class Element Address", HFILL }},
2221 { &hf_ldp_tlv_addrl_addr_family,
2222 { "Address Family", "ldp.msg.tlv.addrl.addr_family", FT_UINT16, BASE_DEC, VALS(afn_vals), 0x0, "Address Family List", HFILL }},
2224 { &hf_ldp_tlv_addrl_addr,
2225 { "Address", "ldp.msg.tlv.addrl.addr", FT_STRING, BASE_NONE, NULL, 0x0, "Address", HFILL }},
2227 { &hf_ldp_tlv_hc_value,
2228 { "Hop Count Value", "ldp.msg.tlv.hc.value", FT_UINT8, BASE_DEC, NULL, 0x0, "Hop Count", HFILL }},
2230 { &hf_ldp_tlv_pv_lsrid,
2231 { "LSR Id", "ldp.msg.tlv.pv.lsrid", FT_IPv4, BASE_DEC, NULL, 0x0, "Path Vector LSR Id", HFILL }},
2233 { &hf_ldp_tlv_sess_ver,
2234 { "Session Protocol Version", "ldp.msg.tlv.sess.ver", FT_UINT16, BASE_DEC, NULL, 0x0, "Common Session Parameters Protocol Version", HFILL }},
2236 { &hf_ldp_tlv_sess_ka,
2237 { "Session KeepAlive Time", "ldp.msg.tlv.sess.ka", FT_UINT16, BASE_DEC, NULL, 0x0, "Common Session Parameters KeepAlive Time", HFILL }},
2239 { &hf_ldp_tlv_sess_advbit,
2240 { "Session Label Advertisement Discipline", "ldp.msg.tlv.sess.advbit",
2241 FT_BOOLEAN, 8, TFS(&tlv_sess_advbit_vals), 0x80,
2242 "Common Session Parameters Label Advertisement Discipline", HFILL }},
2244 { &hf_ldp_tlv_sess_ldetbit,
2245 { "Session Loop Detection", "ldp.msg.tlv.sess.ldetbit", FT_BOOLEAN, 8, TFS(&tlv_sess_ldetbit_vals), 0x40, "Common Session Parameters Loop Detection", HFILL }},
2247 { &hf_ldp_tlv_sess_pvlim,
2248 { "Session Path Vector Limit", "ldp.msg.tlv.sess.pvlim", FT_UINT8, BASE_DEC, NULL, 0x0, "Common Session Parameters Path Vector Limit", HFILL }},
2250 { &hf_ldp_tlv_sess_mxpdu,
2251 { "Session Max PDU Length", "ldp.msg.tlv.sess.mxpdu", FT_UINT16, BASE_DEC, NULL, 0x0, "Common Session Parameters Max PDU Length", HFILL }},
2253 { &hf_ldp_tlv_sess_rxlsr,
2254 { "Session Receiver LSR Identifier", "ldp.msg.tlv.sess.rxlsr", FT_IPv4, BASE_DEC, NULL, 0x0, "Common Session Parameters LSR Identifier", HFILL }},
2256 { &hf_ldp_tlv_sess_rxls,
2257 { "Session Receiver Label Space Identifier", "ldp.msg.tlv.sess.rxlsr", FT_UINT16, BASE_DEC, NULL, 0x0, "Common Session Parameters Receiver Label Space Identifier", HFILL }},
2259 { &hf_ldp_tlv_sess_atm_merge,
2260 { "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 }},
2262 { &hf_ldp_tlv_sess_atm_lr,
2263 { "Number of ATM Label Ranges", "ldp.msg.tlv.sess.atm.lr", FT_UINT8, BASE_DEC, NULL, 0x3C, "Number of Label Ranges", HFILL }},
2265 { &hf_ldp_tlv_sess_atm_dir,
2266 { "Directionality", "ldp.msg.tlv.sess.atm.dir", FT_BOOLEAN, 8, TFS(&tlv_atm_dirbit), 0x02, "Lablel Directionality", HFILL }},
2268 { &hf_ldp_tlv_sess_atm_minvpi,
2269 { "Minimum VPI", "ldp.msg.tlv.sess.atm.minvpi", FT_UINT16, BASE_DEC, NULL, 0x0FFF, "Minimum VPI", HFILL }},
2271 { &hf_ldp_tlv_sess_atm_minvci,
2272 { "Minimum VCI", "ldp.msg.tlv.sess.atm.minvci", FT_UINT16, BASE_DEC, NULL, 0x0, "Minimum VCI", HFILL }},
2274 { &hf_ldp_tlv_sess_atm_maxvpi,
2275 { "Maximum VPI", "ldp.msg.tlv.sess.atm.maxvpi", FT_UINT16, BASE_DEC, NULL, 0x0FFF, "Maximum VPI", HFILL }},
2277 { &hf_ldp_tlv_sess_atm_maxvci,
2278 { "Maximum VCI", "ldp.msg.tlv.sess.atm.maxvci", FT_UINT16, BASE_DEC, NULL, 0x0, "Maximum VCI", HFILL }},
2280 { &hf_ldp_tlv_sess_fr_merge,
2281 { "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 }},
2283 { &hf_ldp_tlv_sess_fr_lr,
2284 { "Number of Frame Relay Label Ranges", "ldp.msg.tlv.sess.fr.lr", FT_UINT8, BASE_DEC, NULL, 0x3C, "Number of Label Ranges", HFILL }},
2286 { &hf_ldp_tlv_sess_fr_dir,
2287 { "Directionality", "ldp.msg.tlv.sess.fr.dir", FT_BOOLEAN, 8, TFS(&tlv_atm_dirbit), 0x02, "Lablel Directionality", HFILL }},
2289 { &hf_ldp_tlv_sess_fr_len,
2290 { "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 }},
2292 { &hf_ldp_tlv_sess_fr_mindlci,
2293 { "Minimum DLCI", "ldp.msg.tlv.sess.fr.mindlci", FT_UINT24, BASE_DEC, NULL, 0x7FFFFF, "Minimum DLCI", HFILL }},
2295 { &hf_ldp_tlv_sess_fr_maxdlci,
2296 { "Maximum DLCI", "ldp.msg.tlv.sess.fr.maxdlci", FT_UINT24, BASE_DEC, NULL, 0x7FFFFF, "Maximum DLCI", HFILL }},
2298 { &hf_ldp_tlv_lbl_req_msg_id,
2299 { "Label Request Message ID", "ldp.tlv.lbl_req_msg_id", FT_UINT32, BASE_HEX, NULL, 0x0, "Label Request Message to be aborted", HFILL }},
2301 { &hf_ldp_tlv_vendor_id,
2302 { "Vendor ID", "ldp.msg.tlv.vendor_id", FT_UINT32, BASE_HEX, NULL, 0, "IEEE 802 Assigned Vendor ID", HFILL }},
2304 { &hf_ldp_tlv_experiment_id,
2305 { "Experiment ID", "ldp.msg.tlv.experiment_id", FT_UINT32, BASE_HEX, NULL, 0, "Experiment ID", HFILL }},
2307 { &hf_ldp_tlv_generic_label,
2308 { "Generic Label", "ldp.msg.tlv.generic.label", FT_UINT32, BASE_HEX, NULL, 0x000FFFFF, "Generic Label", HFILL }},
2310 { &hf_ldp_tlv_atm_label_vbits,
2311 { "V-bits", "ldp.msg.tlv.atm.label.vbits", FT_UINT8, BASE_HEX, VALS(tlv_atm_vbits_vals), 0x30, "ATM Label V Bits", HFILL }},
2313 { &hf_ldp_tlv_atm_label_vpi,
2314 { "VPI", "ldp.msg.tlv.atm.label.vpi", FT_UINT16, BASE_DEC, NULL, 0x0FFF, "ATM Label VPI", HFILL }},
2316 { &hf_ldp_tlv_atm_label_vci,
2317 { "VCI", "ldp.msg.tlv.atm.label.vci", FT_UINT16, BASE_DEC, NULL, 0, "ATM Label VCI", HFILL }},
2319 { &hf_ldp_tlv_fr_label_len,
2320 { "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 }},
2322 { &hf_ldp_tlv_fr_label_dlci,
2323 { "DLCI", "ldp.msg.tlv.fr.label.dlci", FT_UINT24, BASE_DEC, NULL, 0x7FFFFF, "FRAME RELAY Label DLCI", HFILL }},
2325 { &hf_ldp_tlv_status_ebit,
2326 { "E Bit", "ldp.msg.tlv.status.ebit", FT_BOOLEAN, 8, TFS(&tlv_status_ebit), 0x80, "Fatal Error Bit", HFILL }},
2328 { &hf_ldp_tlv_status_fbit,
2329 { "F Bit", "ldp.msg.tlv.status.fbit", FT_BOOLEAN, 8, TFS(&tlv_status_fbit), 0x40, "Forward Bit", HFILL }},
2331 { &hf_ldp_tlv_status_data,
2332 { "Status Data", "ldp.msg.tlv.status.data", FT_UINT32, BASE_HEX, VALS(tlv_status_data), 0x3FFFFFFF, "Status Data", HFILL }},
2334 { &hf_ldp_tlv_status_msg_id,
2335 { "Message ID", "ldp.msg.tlv.status.msg.id", FT_UINT32, BASE_HEX, NULL, 0x0, "Identifies peer message to which Status TLV refers", HFILL }},
2337 { &hf_ldp_tlv_status_msg_type,
2338 { "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 }},
2340 { &hf_ldp_tlv_extstatus_data,
2341 { "Extended Status Data", "ldp.msg.tlv.extstatus.data", FT_UINT32, BASE_HEX, NULL, 0x0, "Extended Status Data", HFILL }},
2343 { &hf_ldp_tlv_returned_version,
2344 { "Returned PDU Version", "ldp.msg.tlv.returned.version", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP Version Number", HFILL }},
2346 { &hf_ldp_tlv_returned_pdu_len,
2347 { "Returned PDU Length", "ldp.msg.tlv.returned.pdu_len", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP PDU Length", HFILL }},
2349 { &hf_ldp_tlv_returned_lsr,
2350 { "Returned PDU LSR ID", "ldp.msg.tlv.returned.ldpid.lsr", FT_IPv4, BASE_DEC, NULL, 0x0, "LDP Label Space Router ID", HFILL }},
2352 { &hf_ldp_tlv_returned_ls_id,
2353 { "Returned PDU Label Space ID", "ldp.msg.tlv.returned.ldpid.lsid", FT_UINT16, BASE_HEX, NULL, 0x0, "LDP Label Space ID", HFILL }},
2355 { &hf_ldp_tlv_returned_msg_ubit,
2356 { "Returned Message Unknown bit", "ldp.msg.tlv.returned.msg.ubit", FT_UINT8, BASE_HEX, TFS(&ldp_message_ubit), 0x80, "Message Unknown bit", HFILL }},
2358 { &hf_ldp_tlv_returned_msg_type,
2359 { "Returned Message Type", "ldp.msg.tlv.returned.msg.type", FT_UINT16, BASE_HEX, VALS(ldp_message_types), 0x7FFF, "LDP message type", HFILL }},
2361 { &hf_ldp_tlv_returned_msg_len,
2362 { "Returned Message Length", "ldp.msg.tlv.returned.msg.len", FT_UINT16, BASE_DEC, NULL, 0x0, "LDP Message Length (excluding message type and len)", HFILL }},
2364 { &hf_ldp_tlv_returned_msg_id,
2365 { "Returned Message ID", "ldp.msg.tlv.returned.msg.id", FT_UINT32, BASE_HEX, NULL, 0x0, "LDP Message ID", HFILL }},
2367 {&hf_ldp_tlv_fec_vc_controlword,
2368 {"C-bit", "ldp.msg.tlv.fec.vc.controlword", FT_BOOLEAN, 8, TFS(&fec_vc_cbit), 0x80, "Control Word Present", HFILL }},
2370 {&hf_ldp_tlv_fec_vc_vctype,
2371 {"VC Type", "ldp.msg.tlv.fec.vc.vctype", FT_UINT16, BASE_HEX, VALS(fec_vc_types_vals), 0x7FFF, "Virtual Circuit Type", HFILL }},
2373 {&hf_ldp_tlv_fec_vc_infolength,
2374 {"VC Info Length", "ldp.msg.tlv.fec.vc.infolength", FT_UINT8, BASE_DEC, NULL, 0x0, "VC FEC Info Length", HFILL }},
2376 {&hf_ldp_tlv_fec_vc_groupid,
2377 {"Group ID", "ldp.msg.tlv.fec.vc.groupid", FT_UINT32, BASE_DEC, NULL, 0x0, "VC FEC Group ID", HFILL }},
2379 {&hf_ldp_tlv_fec_vc_vcid,
2380 {"VC ID", "ldp.msg.tlv.fec.vc.vcid", FT_UINT32, BASE_DEC, NULL, 0x0, "VC FEC VCID", HFILL }},
2382 {&hf_ldp_tlv_fec_vc_intparam_length,
2383 {"Length", "ldp.msg.tlv.fec.vc.intparam.length", FT_UINT8, BASE_DEC, NULL, 0x0, "VC FEC Interface Paramater Length", HFILL }},
2385 {&hf_ldp_tlv_fec_vc_intparam_mtu,
2386 {"MTU", "ldp.msg.tlv.fec.vc.intparam.mtu", FT_UINT16, BASE_DEC, NULL, 0x0, "VC FEC Interface Paramater MTU", HFILL }},
2388 {&hf_ldp_tlv_fec_vc_intparam_id,
2389 {"ID", "ldp.msg.tlv.fec.vc.intparam.id", FT_UINT8, BASE_HEX, VALS(fec_vc_interfaceparm), 0x0, "VC FEC Interface Paramater ID", HFILL }},
2391 {&hf_ldp_tlv_fec_vc_intparam_maxcatmcells,
2392 {"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 }},
2394 { &hf_ldp_tlv_fec_vc_intparam_desc,
2395 { "Description", "ldp.msg.tlv.fec.vc.intparam.desc", FT_STRING, BASE_DEC, NULL, 0, "VC FEC Interface Description", HFILL }},
2397 {&hf_ldp_tlv_fec_vc_intparam_cembytes,
2398 {"Payload Bytes", "ldp.msg.tlv.fec.vc.intparam.cembytes", FT_UINT16, BASE_DEC, NULL, 0x0, "VC FEC Interface Param CEM Payload Bytes", HFILL }},
2400 { &hf_ldp_tlv_lspid_act_flg,
2401 { "Action Indicator Flag", "ldp.msg.tlv.lspid.actflg", FT_UINT16, BASE_HEX, VALS(ldp_act_flg_vals), 0x000F, "Action Indicator Flag", HFILL}},
2403 { &hf_ldp_tlv_lspid_cr_lsp,
2404 { "Local CR-LSP ID", "ldp.msg.tlv.lspid.locallspid", FT_UINT16, BASE_HEX, NULL, 0x0, "Local CR-LSP ID", HFILL}},
2406 { &hf_ldp_tlv_lspid_ldpid,
2407 { "Ingress LSR Router ID", "ldp.msg.tlv.lspid.lsrid", FT_IPv4, BASE_DEC, NULL, 0x0, "Ingress LSR Router ID", HFILL}},
2409 { &hf_ldp_tlv_er_hop_loose,
2410 { "Loose route bit", "ldp.msg.tlv.er_hop.loose", FT_UINT24, BASE_HEX, VALS(ldp_loose_vals), 0x800000, "Loose route bit", HFILL}},
2412 { &hf_ldp_tlv_er_hop_prelen,
2413 { "Prefix length", "ldp.msg.tlv.er_hop.prefixlen", FT_UINT8, BASE_DEC, NULL, 0x0, "Prefix len", HFILL}},
2415 { &hf_ldp_tlv_er_hop_prefix4,
2416 { "IPv4 Address", "ldp.msg.tlv.er_hop.prefix4", FT_IPv4, BASE_DEC, NULL, 0x0, "IPv4 Address", HFILL}},
2417 { &hf_ldp_tlv_er_hop_prefix6,
2418 { "IPv6 Address", "ldp.msg.tlv.er_hop.prefix6", FT_IPv6, BASE_DEC, NULL, 0x0, "IPv6 Address", HFILL}},
2420 { &hf_ldp_tlv_er_hop_as,
2421 { "AS Number", "ldp.msg.tlv.er_hop.as", FT_UINT16, BASE_DEC, NULL, 0x0, "AS Number", HFILL}},
2423 { &hf_ldp_tlv_er_hop_cr_lsp,
2424 { "Local CR-LSP ID", "ldp.msg.tlv.er_hop.locallspid", FT_UINT16, BASE_DEC, NULL, 0x0, "Local CR-LSP ID", HFILL}},
2426 { &hf_ldp_tlv_er_hop_ldpid,
2427 { "Local CR-LSP ID", "ldp.msg.tlv.er_hop.lsrid", FT_IPv4, BASE_DEC, NULL, 0x0, "Local CR-LSP ID", HFILL}},
2429 { &hf_ldp_tlv_flags_reserv,
2430 { "Reserved", "ldp.msg.tlv.flags_reserv", FT_UINT8, BASE_HEX, NULL, 0xC0, "Reserved", HFILL}},
2432 { &hf_ldp_tlv_flags_pdr,
2433 { "PDR", "ldp.msg.tlv.flags_pdr", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x1, "PDR negotiability flag", HFILL}},
2435 { &hf_ldp_tlv_flags_pbs,
2436 { "PBS", "ldp.msg.tlv.flags_pbs", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x2, "PBS negotiability flag", HFILL}},
2438 { &hf_ldp_tlv_flags_cdr,
2439 { "CDR", "ldp.msg.tlv.flags_cdr", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x4, "CDR negotiability flag", HFILL}},
2441 { &hf_ldp_tlv_flags_cbs,
2442 { "CBS", "ldp.msg.tlv.flags_cbs", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x8, "CBS negotiability flag", HFILL}},
2444 { &hf_ldp_tlv_flags_ebs,
2445 { "EBS", "ldp.msg.tlv.flags_ebs", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x10, "EBS negotiability flag", HFILL}},
2447 { &hf_ldp_tlv_flags_weight,
2448 { "Weight", "ldp.msg.tlv.flags_weight", FT_BOOLEAN, 8, TFS(&tlv_negotiable), 0x20, "Weight negotiability flag", HFILL}},
2450 { &hf_ldp_tlv_frequency,
2451 { "Frequency", "ldp.msg.tlv.frequency", FT_UINT8, BASE_DEC, VALS(freq_values), 0, "Frequency", HFILL}},
2453 { &hf_ldp_tlv_weight,
2454 { "Weight", "ldp.msg.tlv.weight", FT_UINT8, BASE_DEC, NULL, 0, "Weight of the CR-LSP", HFILL}},
2457 { "PDR", "ldp.msg.tlv.pdr", FT_DOUBLE, BASE_NONE, NULL, 0, "Peak Data Rate", HFILL}},
2460 { "PBS", "ldp.msg.tlv.pbs", FT_DOUBLE, BASE_NONE, NULL, 0, "Peak Burst Size", HFILL}},
2463 { "CDR", "ldp.msg.tlv.cdr", FT_DOUBLE, BASE_NONE, NULL, 0, "Committed Data Rate", HFILL}},
2466 { "CBS", "ldp.msg.tlv.cbs", FT_DOUBLE, BASE_NONE, NULL, 0, "Committed Burst Size", HFILL}},
2469 { "EBS", "ldp.msg.tlv.ebs", FT_DOUBLE, BASE_NONE, NULL, 0, "Excess Burst Size", HFILL}},
2471 { &hf_ldp_tlv_set_prio,
2472 { "Set Prio", "ldp.msg.tlv.set_prio", FT_UINT8, BASE_DEC, NULL, 0, "LSP setup priority", HFILL}},
2474 { &hf_ldp_tlv_hold_prio,
2475 { "Hold Prio", "ldp.msg.tlv.hold_prio", FT_UINT8, BASE_DEC, NULL, 0, "LSP hold priority", HFILL}},
2477 { &hf_ldp_tlv_route_pinning,
2478 { "Route Pinning", "ldp.msg.tlv.route_pinning", FT_UINT32, BASE_DEC, VALS(route_pinning_vals), 0x80000000, "Route Pinning", HFILL}},
2480 { &hf_ldp_tlv_resource_class,
2481 { "Resource Class", "ldp.msg.tlv.resource_class", FT_UINT32, BASE_HEX, NULL, 0, "Resource Class (Color)", HFILL}},
2485 static gint *ett[] = {
2493 &ett_ldp_fec_vc_interfaceparam
2495 module_t *ldp_module;
2497 proto_ldp = proto_register_protocol("Label Distribution Protocol",
2500 proto_register_field_array(proto_ldp, hf, array_length(hf));
2501 proto_register_subtree_array(ett, array_length(ett));
2503 /* Register our configuration options for , particularly our port */
2505 ldp_module = prefs_register_protocol(proto_ldp, proto_reg_handoff_ldp);
2507 prefs_register_uint_preference(ldp_module, "tcp.port", "LDP TCP Port",
2508 "Set the TCP port for messages (if other"
2509 " than the default of 646)",
2510 10, &global_ldp_tcp_port);
2512 prefs_register_uint_preference(ldp_module, "udp.port", "LDP UDP Port",
2513 "Set the UDP port for messages (if other"
2514 " than the default of 646)",
2515 10, &global_ldp_udp_port);
2517 prefs_register_bool_preference(ldp_module, "desegment_ldp_messages",
2518 "Desegment all LDP messages spanning multiple TCP segments",
2519 "Whether the LDP dissector should desegment all messages spanning multiple TCP segments",
2523 /* The registration hand-off routine */
2525 proto_reg_handoff_ldp(void)
2527 static gboolean ldp_prefs_initialized = FALSE;
2528 static dissector_handle_t ldp_tcp_handle, ldp_handle;
2530 if (!ldp_prefs_initialized) {
2532 ldp_tcp_handle = new_create_dissector_handle(dissect_ldp_tcp, proto_ldp);
2533 ldp_handle = new_create_dissector_handle(dissect_ldp, proto_ldp);
2535 ldp_prefs_initialized = TRUE;
2540 dissector_delete("tcp.port", tcp_port, ldp_tcp_handle);
2541 dissector_delete("udp.port", udp_port, ldp_handle);
2545 /* Set our port number for future use */
2547 tcp_port = global_ldp_tcp_port;
2548 udp_port = global_ldp_udp_port;
2550 dissector_add("tcp.port", global_ldp_tcp_port, ldp_tcp_handle);
2551 dissector_add("udp.port", global_ldp_udp_port, ldp_handle);