forked from osmocom/wireshark
From Carlos Pignataro:
Graceful Restart Mechanism for LDP [RFC3478] Fault Tolerance for LDP [RFC3479] Update IANA assigned Status codes Fixed some typos. svn path=/trunk/; revision=10718
This commit is contained in:
Gerald Combs
parent
251ecc78f5
commit
db200f55cc
6
AUTHORS
6
AUTHORS
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@ -2097,6 +2097,12 @@ Lukas Pokorny <maskis [AT] seznam.cz> {
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RTPS (Real-Time Publish-Subscribe) support
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}
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Carlos M. Pignataro <cpignata [AT] cisco.com> {
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Graceful Restart Mechanism for LDP [RFC3478]
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Fault Tolerance for LDP [RFC3479]
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Other LDP enhancements
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}
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And assorted fixes and enhancements by the people listed above and by:
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Pavel Roskin <proski [AT] gnu.org>
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@ -2252,6 +2252,7 @@ B<http://www.ethereal.com>.
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Jon Oberheide <jon [AT] focalhost.com>
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Clinton Work <clinton [AT] scripty.com>
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Joe Marcus Clarke <marcus [AT] marcuscom.com>
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Carlos M. Pignataro <cpignata [AT] cisco.com>
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Alain Magloire <alainm[AT]rcsm.ece.mcgill.ca> was kind enough to give his
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permission to use his version of snprintf.c.
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206
packet-ldp.c
206
packet-ldp.c
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@ -1,7 +1,7 @@
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/* packet-ldp.c
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* Routines for LDP (RFC 3036) packet disassembly
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*
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* $Id: packet-ldp.c,v 1.50 2004/01/17 12:51:00 ulfl Exp $
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* $Id: packet-ldp.c,v 1.51 2004/04/28 15:38:33 gerald Exp $
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*
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* Copyright (c) November 2000 by Richard Sharpe <rsharpe@ns.aus.com>
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*
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@ -91,6 +91,7 @@ static int hf_ldp_tlv_atm_label_vpi = -1;
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static int hf_ldp_tlv_atm_label_vci = -1;
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static int hf_ldp_tlv_fr_label_len = -1;
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static int hf_ldp_tlv_fr_label_dlci = -1;
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static int hf_ldp_tlv_ft_protect_sequence_num = -1;
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static int hf_ldp_tlv_status_ebit = -1;
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static int hf_ldp_tlv_status_fbit = -1;
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static int hf_ldp_tlv_status_data = -1;
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@ -127,6 +128,17 @@ static int hf_ldp_tlv_sess_fr_dir = -1;
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static int hf_ldp_tlv_sess_fr_len = -1;
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static int hf_ldp_tlv_sess_fr_mindlci = -1;
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static int hf_ldp_tlv_sess_fr_maxdlci = -1;
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static int hf_ldp_tlv_ft_sess_flags = -1;
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static int hf_ldp_tlv_ft_sess_flag_r = -1;
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static int hf_ldp_tlv_ft_sess_flag_res = -1;
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static int hf_ldp_tlv_ft_sess_flag_s = -1;
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static int hf_ldp_tlv_ft_sess_flag_a = -1;
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static int hf_ldp_tlv_ft_sess_flag_c = -1;
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static int hf_ldp_tlv_ft_sess_flag_l = -1;
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static int hf_ldp_tlv_ft_sess_res = -1;
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static int hf_ldp_tlv_ft_sess_reconn_to = -1;
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static int hf_ldp_tlv_ft_sess_recovery_time = -1;
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static int hf_ldp_tlv_ft_ack_sequence_num = -1;
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static int hf_ldp_tlv_lbl_req_msg_id = -1;
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static int hf_ldp_tlv_vendor_id = -1;
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static int hf_ldp_tlv_experiment_id = -1;
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@ -188,6 +200,7 @@ static int ett_ldp_ldpid = -1;
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static int ett_ldp_message = -1;
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static int ett_ldp_tlv = -1;
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static int ett_ldp_tlv_val = -1;
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static int ett_ldp_tlv_ft_flags = -1;
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static int ett_ldp_fec = -1;
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static int ett_ldp_fec_vc_interfaceparam = -1;
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static int ett_ldp_diffserv_map = -1;
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@ -215,6 +228,7 @@ static guint32 global_ldp_udp_port = UDP_PORT_LDP;
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#define TLV_GENERIC_LABEL 0x0200
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#define TLV_ATM_LABEL 0x0201
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#define TLV_FRAME_LABEL 0x0202
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#define TLV_FT_PROTECTION 0x0203
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#define TLV_STATUS 0x0300
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#define TLV_EXTENDED_STATUS 0x0301
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#define TLV_RETURNED_PDU 0x0302
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@ -227,6 +241,9 @@ static guint32 global_ldp_udp_port = UDP_PORT_LDP;
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#define TLV_COMMON_SESSION_PARMS 0x0500
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#define TLV_ATM_SESSION_PARMS 0x0501
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#define TLV_FRAME_RELAY_SESSION_PARMS 0x0502
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#define TLV_FT_SESSION 0x0503
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#define TLV_FT_ACK 0x0504
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#define TLV_FT_CORK 0x0505
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#define TLV_LABEL_REQUEST_MESSAGE_ID 0x0600
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#define TLV_ER 0x0800
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#define TLV_ER_HOP_IPV4 0x0801
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@ -252,6 +269,7 @@ static const value_string tlv_type_names[] = {
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{ TLV_GENERIC_LABEL, "Generic Label TLV"},
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{ TLV_ATM_LABEL, "ATM Label TLV"},
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{ TLV_FRAME_LABEL, "Frame Label TLV"},
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{ TLV_FT_PROTECTION, "FT Protection TLV"},
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{ TLV_STATUS, "Status TLV"},
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{ TLV_EXTENDED_STATUS, "Extended Status TLV"},
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{ TLV_RETURNED_PDU, "Returned PDU TLV"},
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@ -264,6 +282,9 @@ static const value_string tlv_type_names[] = {
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{ TLV_COMMON_SESSION_PARMS, "Common Session Parameters TLV"},
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{ TLV_ATM_SESSION_PARMS, "ATM Session Parameters TLV"},
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{ TLV_FRAME_RELAY_SESSION_PARMS, "Frame Relay Session Parameters TLV"},
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{ TLV_FT_SESSION, "FT Session TLV"},
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{ TLV_FT_ACK, "FT ACK TLV"},
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{ TLV_FT_CORK, "FT Cork TLV"},
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{ TLV_LABEL_REQUEST_MESSAGE_ID, "Label Request Message ID TLV"},
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{ TLV_LSPID, "LSP ID TLV"},
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{ TLV_ER, "Explicit route TLV"},
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@ -397,7 +418,7 @@ static const value_string fec_vc_interfaceparm[] = {
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};
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static const true_false_string fec_vc_cbit = {
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"Contorl Word Present",
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"Control Word Present",
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"Control Word NOT Present"
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};
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@ -435,6 +456,51 @@ static const value_string tlv_fr_len_vals[] = {
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{0, NULL}
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};
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static const value_string tlv_ft_flags[] = {
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{0, "Invalid"},
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{1, "Using LDP Graceful Restart"},
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{2, "Check-Pointing of all labels"},
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{3, "Invalid"},
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{4, "Invalid"},
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{5, "Invalid"},
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{6, "Check-Pointing of all labels"},
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{7, "Invalid"},
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{8, "Full FT on selected labels"},
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{9, "Invalid"},
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{10, "Full FT on selected labels"},
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{11, "Invalid"},
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{12, "Full FT on all labels"},
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{13, "Invalid"},
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{14, "Full FT on all labels"},
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{15, "Invalid"},
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{0, NULL}
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};
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static const true_false_string tlv_ft_r = {
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"LSR has preserved state and resources for all FT-Labels",
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"LSR has not preserved state and resources for all FT-Labels"
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};
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static const true_false_string tlv_ft_s = {
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"FT Protection TLV supported on other than KeepAlive",
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"FT Protection TLV not supported on other than KeepAlive"
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};
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static const true_false_string tlv_ft_a = {
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"Treat all labels as Sequence Numbered FT Labels",
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"May treat some labels as FT and others as non-FT"
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};
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static const true_false_string tlv_ft_c = {
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"Check-Pointing procedures in use",
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"Check-Pointing procedures not in use"
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};
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static const true_false_string tlv_ft_l = {
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"Re-learn the state from the network",
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"Do not re-learn the state from the network"
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};
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static const value_string ldp_act_flg_vals[] = {
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{0, "indicates initial LSP setup"},
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{1, "indicates modify LSP"},
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@ -528,6 +594,16 @@ static const value_string tlv_status_data[] = {
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{23, "Unsoported Address Family"},
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{24, "Session Rejected / Bad KeepAlive Time"},
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{25, "Internal Error"},
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{26, "No LDP Session"},
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{27, "Zero FT seqnum"},
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{28, "Unexpected TLV / Session Not FT"},
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{29, "Unexpected TLV / Label Not FT"},
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{30, "Missing FT Protection TLV"},
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{31, "FT ACK sequence error"},
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{32, "Temporary Shutdown"},
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{33, "FT Seq Numbers Exhausted"},
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{34, "FT Session parameters / changed"},
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{35, "Unexpected FT Cork TLV"},
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{0x01000001,"Unexpected Diff-Serv TLV"},
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{0x01000002,"Unsupported PHB"},
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{0x01000003,"Invalid EXP<->PHB Mapping"},
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@ -775,7 +851,7 @@ dissect_tlv_fec(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
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while ( (vc_len > 1) && (rem > 1) ) { /* enough to include id and length */
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intparam_len = tvb_get_guint8(tvb, offset+1);
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ti = proto_tree_add_text(fec_tree, tvb, offset, intparam_len, "Interface Paramameter");
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ti = proto_tree_add_text(fec_tree, tvb, offset, intparam_len, "Interface Parameter");
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vcintparam_tree = proto_item_add_subtree(ti, ett_ldp_fec_vc_interfaceparam);
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if(vcintparam_tree == NULL) return;
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proto_tree_add_item(vcintparam_tree,hf_ldp_tlv_fec_vc_intparam_id,tvb,offset,1,FALSE);
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@ -1351,6 +1427,57 @@ dissect_tlv_frame_relay_session_parms(tvbuff_t *tvb, guint offset,proto_tree *tr
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}
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}
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/* Dissect the Fault Tolerant (FT) Session TLV */
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static void
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dissect_tlv_ft_session(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
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{
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proto_tree *ti = NULL, *val_tree = NULL, *flags_tree = NULL;
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guint16 flags = 0;
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if (tree != NULL) {
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if(rem != 12){
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/* error, length must be 12 bytes */
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proto_tree_add_text(tree, tvb, offset, rem,
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"Error processing FT Session TLV: length is %d, should be 12",
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rem);
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return;
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}
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ti = proto_tree_add_text(tree, tvb, offset, rem, "FT Session Parameters");
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val_tree = proto_item_add_subtree(ti, ett_ldp_tlv_val);
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if(val_tree != NULL) {
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/* Flags */
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ti = proto_tree_add_item(val_tree, hf_ldp_tlv_ft_sess_flags, tvb, offset, 2, FALSE);
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flags_tree = proto_item_add_subtree(ti, ett_ldp_tlv_ft_flags);
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if (flags_tree == NULL)
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return;
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flags = tvb_get_ntohs(tvb, offset);
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proto_item_append_text(ti, " (%s%s)", (flags & 0x8000) ? "R, " : "",
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val_to_str(flags & 0xF, tlv_ft_flags, "Invalid"));
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proto_tree_add_item(flags_tree, hf_ldp_tlv_ft_sess_flag_r, tvb, offset, 2, FALSE);
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proto_tree_add_item(flags_tree, hf_ldp_tlv_ft_sess_flag_res, tvb, offset, 2, FALSE);
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proto_tree_add_item(flags_tree, hf_ldp_tlv_ft_sess_flag_s, tvb, offset, 2, FALSE);
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proto_tree_add_item(flags_tree, hf_ldp_tlv_ft_sess_flag_a, tvb, offset, 2, FALSE);
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proto_tree_add_item(flags_tree, hf_ldp_tlv_ft_sess_flag_c, tvb, offset, 2, FALSE);
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proto_tree_add_item(flags_tree, hf_ldp_tlv_ft_sess_flag_l, tvb, offset, 2, FALSE);
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/* Reserved */
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proto_tree_add_item(val_tree, hf_ldp_tlv_ft_sess_res, tvb, offset + 2, 2, FALSE);
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/* FT Reconnect TO */
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proto_tree_add_item(val_tree, hf_ldp_tlv_ft_sess_reconn_to, tvb, offset + 4,
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4, FALSE);
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/* Recovery Time */
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proto_tree_add_item(val_tree, hf_ldp_tlv_ft_sess_recovery_time, tvb, offset + 8,
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4, FALSE);
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}
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}
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}
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static void
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dissect_tlv_lspid(tvbuff_t *tvb, guint offset,proto_tree *tree, int rem)
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@ -1800,6 +1927,16 @@ dissect_tlv(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
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dissect_tlv_frame_label(tvb, offset + 4, tlv_tree, length);
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break;
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case TLV_FT_PROTECTION:
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if( length != 4 ) /* Length must be 4 bytes */
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proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
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"Error processing FT Protection TLV: length is %d, should be 4",
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length);
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else
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proto_tree_add_item(tlv_tree, hf_ldp_tlv_ft_protect_sequence_num, tvb,
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offset + 4,length, FALSE);
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break;
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case TLV_STATUS:
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dissect_tlv_status(tvb, offset + 4, tlv_tree, length);
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break;
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@ -1876,6 +2013,28 @@ dissect_tlv(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
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dissect_tlv_frame_relay_session_parms(tvb, offset + 4, tlv_tree, length);
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break;
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case TLV_FT_SESSION:
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/* Used in RFC3478 LDP Graceful Restart */
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dissect_tlv_ft_session(tvb, offset + 4, tlv_tree, length);
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break;
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case TLV_FT_ACK:
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if( length != 4 ) /* Length must be 4 bytes */
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proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
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"Error processing FT ACK TLV: length is %d, should be 4",
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length);
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else
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proto_tree_add_item(tlv_tree, hf_ldp_tlv_ft_ack_sequence_num, tvb,
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offset + 4,length, FALSE);
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break;
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case TLV_FT_CORK:
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if( length != 0 ) /* Length must be 0 bytes */
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proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
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"Error processing FT Cork TLV: length is %d, should be 0",
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length);
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break;
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case TLV_LABEL_REQUEST_MESSAGE_ID:
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if( length != 4 ) /*error, need only one msgid*/
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proto_tree_add_text(tlv_tree, tvb, offset + 4, length,
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@ -2406,7 +2565,7 @@ proto_register_ldp(void)
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{ "Number of ATM Label Ranges", "ldp.msg.tlv.sess.atm.lr", FT_UINT8, BASE_DEC, NULL, 0x3C, "Number of Label Ranges", HFILL }},
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{ &hf_ldp_tlv_sess_atm_dir,
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{ "Directionality", "ldp.msg.tlv.sess.atm.dir", FT_BOOLEAN, 8, TFS(&tlv_atm_dirbit), 0x02, "Lablel Directionality", HFILL }},
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{ "Directionality", "ldp.msg.tlv.sess.atm.dir", FT_BOOLEAN, 8, TFS(&tlv_atm_dirbit), 0x02, "Label Directionality", HFILL }},
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{ &hf_ldp_tlv_sess_atm_minvpi,
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{ "Minimum VPI", "ldp.msg.tlv.sess.atm.minvpi", FT_UINT16, BASE_DEC, NULL, 0x0FFF, "Minimum VPI", HFILL }},
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@ -2427,7 +2586,7 @@ proto_register_ldp(void)
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{ "Number of Frame Relay Label Ranges", "ldp.msg.tlv.sess.fr.lr", FT_UINT8, BASE_DEC, NULL, 0x3C, "Number of Label Ranges", HFILL }},
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{ &hf_ldp_tlv_sess_fr_dir,
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{ "Directionality", "ldp.msg.tlv.sess.fr.dir", FT_BOOLEAN, 8, TFS(&tlv_atm_dirbit), 0x02, "Lablel Directionality", HFILL }},
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{ "Directionality", "ldp.msg.tlv.sess.fr.dir", FT_BOOLEAN, 8, TFS(&tlv_atm_dirbit), 0x02, "Label Directionality", HFILL }},
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{ &hf_ldp_tlv_sess_fr_len,
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{ "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 }},
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@ -2438,6 +2597,39 @@ proto_register_ldp(void)
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{ &hf_ldp_tlv_sess_fr_maxdlci,
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{ "Maximum DLCI", "ldp.msg.tlv.sess.fr.maxdlci", FT_UINT24, BASE_DEC, NULL, 0x7FFFFF, "Maximum DLCI", HFILL }},
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{ &hf_ldp_tlv_ft_sess_flags,
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{ "Flags", "ldp.msg.tlv.ft_sess.flags", FT_UINT16, BASE_HEX, NULL, 0x0, "FT Session Flags", HFILL }},
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{ &hf_ldp_tlv_ft_sess_flag_r,
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{ "R bit", "ldp.msg.tlv.ft_sess.flag_r", FT_BOOLEAN, 16, TFS(&tlv_ft_r), 0x8000, "FT Reconnect Flag", HFILL }},
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{ &hf_ldp_tlv_ft_sess_flag_res,
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{ "Reserved", "ldp.msg.tlv.ft_sess.flag_res", FT_UINT16, BASE_HEX, NULL, 0x7FF0, "Reserved bits", HFILL }},
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{ &hf_ldp_tlv_ft_sess_flag_s,
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{ "S bit", "ldp.msg.tlv.ft_sess.flag_s", FT_BOOLEAN, 16, TFS(&tlv_ft_s), 0x8, "Save State Flag", HFILL }},
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{ &hf_ldp_tlv_ft_sess_flag_a,
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{ "A bit", "ldp.msg.tlv.ft_sess.flag_a", FT_BOOLEAN, 16, TFS(&tlv_ft_a), 0x4, "All-Label protection Required", HFILL }},
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{ &hf_ldp_tlv_ft_sess_flag_c,
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{ "C bit", "ldp.msg.tlv.ft_sess.flag_c", FT_BOOLEAN, 16, TFS(&tlv_ft_c), 0x2, "Check-Pointint Flag", HFILL }},
|
||||
|
||||
{ &hf_ldp_tlv_ft_sess_flag_l,
|
||||
{ "L bit", "ldp.msg.tlv.ft_sess.flag_l", FT_BOOLEAN, 16, TFS(&tlv_ft_l), 0x1, "Learn From network Flag", HFILL }},
|
||||
|
||||
{ &hf_ldp_tlv_ft_sess_res,
|
||||
{ "Reserved", "ldp.msg.tlv.ft_sess.res", FT_UINT16, BASE_HEX, NULL, 0x0, "Reserved", HFILL }},
|
||||
|
||||
{ &hf_ldp_tlv_ft_sess_reconn_to,
|
||||
{ "Reconnect Timeout", "ldp.msg.tlv.ft_sess.reconn_to", FT_UINT32, BASE_DEC, NULL, 0x0, "FT Reconnect Timeout", HFILL }},
|
||||
|
||||
{ &hf_ldp_tlv_ft_sess_recovery_time,
|
||||
{ "Recovery Time", "ldp.msg.tlv.ft_sess.recovery_time", FT_UINT32, BASE_DEC, NULL, 0x0, "Recovery Time", HFILL }},
|
||||
|
||||
{ &hf_ldp_tlv_ft_ack_sequence_num,
|
||||
{ "FT ACK Sequence Number", "ldp.msg.tlv.ft_ack.sequence_num", FT_UINT32, BASE_HEX, NULL, 0x0, "FT ACK Sequence Number", HFILL }},
|
||||
|
||||
{ &hf_ldp_tlv_lbl_req_msg_id,
|
||||
{ "Label Request Message ID", "ldp.tlv.lbl_req_msg_id", FT_UINT32, BASE_HEX, NULL, 0x0, "Label Request Message to be aborted", HFILL }},
|
||||
|
||||
|
|
@ -2465,6 +2657,9 @@ proto_register_ldp(void)
|
|||
{ &hf_ldp_tlv_fr_label_dlci,
|
||||
{ "DLCI", "ldp.msg.tlv.fr.label.dlci", FT_UINT24, BASE_DEC, NULL, 0x7FFFFF, "FRAME RELAY Label DLCI", HFILL }},
|
||||
|
||||
{ &hf_ldp_tlv_ft_protect_sequence_num,
|
||||
{ "FT Sequence Number", "ldp.msg.tlv.ft_protect.sequence_num", FT_UINT32, BASE_HEX, NULL, 0x0, "FT Sequence Number", HFILL }},
|
||||
|
||||
{ &hf_ldp_tlv_status_ebit,
|
||||
{ "E Bit", "ldp.msg.tlv.status.ebit", FT_BOOLEAN, 8, TFS(&tlv_status_ebit), 0x80, "Fatal Error Bit", HFILL }},
|
||||
|
||||
|
|
@ -2684,6 +2879,7 @@ proto_register_ldp(void)
|
|||
&ett_ldp_message,
|
||||
&ett_ldp_tlv,
|
||||
&ett_ldp_tlv_val,
|
||||
&ett_ldp_tlv_ft_flags,
|
||||
&ett_ldp_fec,
|
||||
&ett_ldp_fec_vc_interfaceparam,
|
||||
&ett_ldp_diffserv_map,
|
||||
|
|
|
|||
Loading…
Reference in New Issue