From Krishnamurthy Mayya:
Enhancement to support MPLS-TP FM and LI payloads as per RFC 6427 and RFC 6435 Fixed some errors found by checkapi, changed filter names to use proto abbr. svn path=/trunk/; revision=46084
This commit is contained in:
Anders Broman
parent
28474fe8ef
commit
1c22a075a8
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@ -887,6 +887,7 @@ set(DISSECTOR_SRC
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dissectors/packet-mpls-echo.c
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dissectors/packet-mpls-pm.c
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dissectors/packet-mpls-psc.c
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dissectors/packet-mplstp-oam.c
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dissectors/packet-mpls-y1711.c
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dissectors/packet-mpls.c
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dissectors/packet-mq-pcf.c
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@ -807,6 +807,7 @@ DISSECTOR_SRC = \
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packet-mpls-echo.c \
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packet-mpls-pm.c \
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packet-mpls-psc.c \
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packet-mplstp-oam.c \
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packet-mpls-y1711.c \
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packet-mpls.c \
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packet-mq-pcf.c \
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@ -578,25 +578,41 @@ dissect_bfd_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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As per RFC 6428 : http://tools.ietf.org/html/rfc6428
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sections - 3.5.1, 3.5.2, 3.5.3 */
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void
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dissect_bfd_mep (tvbuff_t *tvb, proto_tree *tree)
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dissect_bfd_mep (tvbuff_t *tvb, proto_tree *tree, const int hfindex)
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{
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proto_item *ti;
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proto_tree *bfd_tree;
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gint offset;
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gint mep_type;
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gint mep_len;
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gint mep_agi_len;
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proto_item *ti = NULL;
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proto_tree *bfd_tree = NULL;
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gint offset = 0;
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gint mep_type = 0;
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gint mep_len = 0;
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gint mep_agi_len = 0;
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if (!tree)
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return;
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/* Fetch the BFD control message length and move the offset
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to point to the data portion after the control message */
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offset = tvb_get_guint8(tvb, 3);
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mep_type = tvb_get_ntohs (tvb, offset);
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mep_len = tvb_get_ntohs (tvb, (offset + 2));
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ti = proto_tree_add_protocol_format (tree, proto_bfd, tvb, offset, (mep_len + 4),
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"MPLS-TP SOURCE MEP-ID TLV");
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/* The parameter hfindex is used for determining the tree under which MEP-ID TLV
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has to be determined. Since according to RFC 6428, MEP-ID TLV can be used by any
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OAM function, if hfindex is 0, as per this function the MEP-TLV is a part of
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BFD-CV payload. If a non-zero hfindex comes, then tht TLV info will be displayed
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under a particular protocol-tree. */
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if (!hfindex)
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{
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offset = tvb_get_guint8(tvb, 3);
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mep_type = tvb_get_ntohs (tvb, offset);
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mep_len = tvb_get_ntohs (tvb, (offset + 2));
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ti = proto_tree_add_protocol_format (tree, proto_bfd, tvb, offset, (mep_len + 4),
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"MPLS-TP SOURCE MEP-ID TLV");
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}
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else
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{
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mep_type = tvb_get_ntohs (tvb, offset);
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mep_len = tvb_get_ntohs (tvb, (offset + 2));
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ti = proto_tree_add_protocol_format (tree, hfindex, tvb, offset, (mep_len + 4),
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"MPLS-TP SOURCE MEP-ID TLV");
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}
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switch (mep_type) {
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case TLV_TYPE_MPLSTP_SECTION_MEP:
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@ -24,6 +24,6 @@
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#ifndef PACKET_BFD_H
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#define PACKET_BFD_H
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void dissect_bfd_mep (tvbuff_t *tvb, proto_tree *tree);
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void dissect_bfd_mep (tvbuff_t *tvb, proto_tree *tree, const int hfindex);
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#endif
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@ -23,6 +23,8 @@
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* Nikitha Malgi <malgi.nikitha@ipinfusion.com>
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* - Identification of BFD CC, BFD CV and ON-Demand CV ACH types as per RFC 6428, RFC 6426
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* respectively and the corresponding decoding of messages
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* - Decoding support for MPLS-TP Lock Instruct as per RFC 6435
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* - Decoding support for MPLS-TP Fault-Management as per RFC 6427
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*
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* (c) Copyright 2012, Aditya Ambadkar and Diana Chris <arambadk,dvchris@ncsu.edu>
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* - Added preference to select BOS label as flowlabel as per RFC 6391
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@ -98,6 +100,8 @@ static dissector_handle_t dissector_mpls_pm_dm;
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static dissector_handle_t dissector_mpls_pm_dlm_dm;
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static dissector_handle_t dissector_mpls_pm_ilm_dm;
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static dissector_handle_t dissector_mpls_psc;
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static dissector_handle_t dissector_mplstp_lock;
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static dissector_handle_t dissector_mplstp_fm;
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static dissector_handle_t dissector_pw_eth_heuristic;
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static dissector_handle_t dissector_pw_fr;
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static dissector_handle_t dissector_pw_hdlc_nocw_fr;
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@ -384,7 +388,7 @@ dissect_pw_ach(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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case ACH_TYPE_BFD_CV:
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call_dissector(dissector_bfd, next_tvb, pinfo, tree); /* bfd_control() */
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dissect_bfd_mep(next_tvb, tree);
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dissect_bfd_mep(next_tvb, tree, 0);
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break;
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case ACH_TYPE_ONDEMAND_CV:
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@ -427,6 +431,14 @@ dissect_pw_ach(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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call_dissector(dissector_mpls_psc, next_tvb, pinfo, tree);
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break;
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case 0x0026: /* KM: MPLSTP LOCK, RFC 6435 */
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call_dissector(dissector_mplstp_lock, next_tvb, pinfo, tree);
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break;
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case 0x0058: /* KM: MPLSTP FM, RFC 6427 */
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call_dissector(dissector_mplstp_fm, next_tvb, pinfo, tree);
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break;
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default:
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call_dissector(dissector_data, next_tvb, pinfo, tree);
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break;
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@ -797,6 +809,8 @@ proto_reg_handoff_mpls(void)
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dissector_mpls_pm_dlm_dm = find_dissector("mpls_pm_dlm_dm");
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dissector_mpls_pm_ilm_dm = find_dissector("mpls_pm_ilm_dm");
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dissector_mpls_psc = find_dissector("mpls_psc");
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dissector_mplstp_lock = find_dissector("mplstp_lock");
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dissector_mplstp_fm = find_dissector("mplstp_fm");
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dissector_pw_eth_heuristic = find_dissector("pw_eth_heuristic");
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dissector_pw_fr = find_dissector("pw_fr");
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dissector_pw_hdlc_nocw_fr = find_dissector("pw_hdlc_nocw_fr");
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@ -0,0 +1,331 @@
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/* packet-mplstp-oam.c
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*
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* $Id$
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* Routines for MPLS-TP Lock Instruct Protocol : RFC 6435
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* MPLS-TP Fault-Management Protocol : RFC 6427
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*
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* Authors:
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* Krishnamurthy Mayya <krishnamurthymayya@gmail.com>
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* Nikitha Malgi <nikitha01@gmail.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <glib.h>
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#include <epan/packet.h>
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#include <packet-ip.h>
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#include <epan/dissectors/packet-bfd.h>
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/* MPLS-TP FM protocol specific variables */
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static gint proto_mplstp_fm = -1;
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static gint ett_mplstp_fm = -1;
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static gint ett_mplstp_fm_flags = -1;
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static gint ett_mplstp_fm_tlv_tree = -1;
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static int hf_mplstp_fm_version = -1;
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static int hf_mplstp_fm_reserved = -1;
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static int hf_mplstp_fm_msg_type = -1;
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static int hf_mplstp_fm_flags = -1;
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static int hf_mplstp_fm_flags_l = -1;
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static int hf_mplstp_fm_flags_r = -1;
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static int hf_mplstp_fm_refresh_timer = -1;
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static int hf_mplstp_fm_total_tlv_len = -1;
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static int hf_mplstp_fm_if_tlv_type = -1;
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static int hf_mplstp_fm_global_tlv_type = -1;
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static int hf_mplstp_fm_tlv_len = -1;
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static int hf_mplstp_fm_node_id = -1;
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static int hf_mplstp_fm_if_num = -1;
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static int hf_mplstp_fm_global_id = -1;
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static const value_string fm_msg_type[] = {
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{0, "No Return Code"},
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{1, "Alarm-Indication Signal(A)"},
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{2, "Lock-Report(L)"},
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{0, NULL}
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};
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/* MPLS-TP Lock protocol specific variables */
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static gint proto_mplstp_lock = -1;
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static gint ett_mplstp_lock = -1;
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static int hf_mplstp_lock_version = -1;
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static int hf_mplstp_lock_reserved = -1;
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static int hf_mplstp_lock_refresh_timer = -1;
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void
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dissect_mplstp_fm_tlv (tvbuff_t *tvb, proto_tree *tree)
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{
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proto_item *ti = NULL;
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proto_tree *fm_tlv_tree = NULL;
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guint offset = 0;
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ti = proto_tree_add_protocol_format (tree, proto_mplstp_fm, tvb, offset, 16,
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"Fault-Management TLVs");
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if (!tree)
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return;
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fm_tlv_tree = proto_item_add_subtree (ti, ett_mplstp_fm_tlv_tree);
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proto_tree_add_item (fm_tlv_tree, hf_mplstp_fm_if_tlv_type , tvb, offset,
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1, ENC_BIG_ENDIAN);
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offset = offset + 1;
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proto_tree_add_item (fm_tlv_tree, hf_mplstp_fm_tlv_len, tvb, offset,
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1, ENC_BIG_ENDIAN);
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offset = offset + 1;
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proto_tree_add_item (fm_tlv_tree, hf_mplstp_fm_node_id, tvb, offset,
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4, ENC_BIG_ENDIAN);
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offset = offset + 4;
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proto_tree_add_item (fm_tlv_tree, hf_mplstp_fm_if_num, tvb, offset,
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4, ENC_BIG_ENDIAN);
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offset = offset + 4;
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proto_tree_add_item (fm_tlv_tree, hf_mplstp_fm_global_tlv_type , tvb, offset,
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1, ENC_BIG_ENDIAN);
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offset = offset + 1;
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proto_tree_add_item (fm_tlv_tree, hf_mplstp_fm_tlv_len, tvb, offset,
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1, ENC_BIG_ENDIAN);
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offset = offset + 1;
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proto_tree_add_item (fm_tlv_tree, hf_mplstp_fm_global_id, tvb, offset,
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4, ENC_BIG_ENDIAN);
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offset = offset + 4;
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return ;
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}
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/* Dissector for MPLS-TP LI protocol: RFC 6435 */
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static void
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dissect_mplstp_lock(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ti = NULL;
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proto_tree *lock_tree = NULL;
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tvbuff_t *next_tvb = NULL;
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guint8 offset = 0;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "MPLS-TP LI");
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col_clear(pinfo->cinfo, COL_INFO);
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if (!tree)
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return;
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ti = proto_tree_add_item(tree, proto_mplstp_lock, tvb, 0, -1, ENC_NA);
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lock_tree = proto_item_add_subtree (ti, ett_mplstp_lock);
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/* Version field */
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proto_tree_add_item (lock_tree, hf_mplstp_lock_version , tvb, offset,
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1, ENC_BIG_ENDIAN);
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/* Reserved field */
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proto_tree_add_item (lock_tree, hf_mplstp_lock_reserved, tvb, offset,
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3, ENC_BIG_ENDIAN);
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offset = offset + 3;
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/* Refresh-Timer field */
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proto_tree_add_item (lock_tree, hf_mplstp_lock_refresh_timer, tvb, offset,
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1, ENC_BIG_ENDIAN);
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offset = offset + 1;
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/*Source-MEP TLVs */
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next_tvb = tvb_new_subset_remaining (tvb, offset);
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dissect_bfd_mep (next_tvb, tree, proto_mplstp_lock);
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return;
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}
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/* Dissector for MPLS-TP FM protocol: RFC 6427 */
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static void
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dissect_mplstp_fm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ti = NULL, *ti_flags = NULL;
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proto_tree *fm_tree = NULL, *fm_flags = NULL;
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tvbuff_t *next_tvb = NULL;
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guint8 offset = 0;
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guint8 tlv_len = 0;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "MPLS-TP FM");
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col_clear(pinfo->cinfo, COL_INFO);
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tlv_len = tvb_get_guint8 (tvb, (offset + 4));
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if (!tree)
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return;
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ti = proto_tree_add_item(tree, proto_mplstp_fm, tvb, 0, (tlv_len + 5), ENC_NA);
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fm_tree = proto_item_add_subtree (ti, ett_mplstp_fm);
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/* Version and Reserved fields */
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proto_tree_add_item (fm_tree, hf_mplstp_fm_version , tvb, offset,
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1, ENC_BIG_ENDIAN);
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proto_tree_add_item (fm_tree, hf_mplstp_fm_reserved, tvb, offset,
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1, ENC_BIG_ENDIAN);
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offset = offset + 1;
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/* FM-Message type field */
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proto_tree_add_item (fm_tree, hf_mplstp_fm_msg_type, tvb, offset,
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1,ENC_BIG_ENDIAN);
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offset = offset + 1;
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/* Flags field */
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ti_flags = proto_tree_add_item (fm_tree, hf_mplstp_fm_flags, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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fm_flags = proto_item_add_subtree(ti_flags, ett_mplstp_fm_flags);
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proto_tree_add_item (fm_flags, hf_mplstp_fm_flags_l, tvb, offset, 1, FALSE);
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proto_tree_add_item (fm_flags, hf_mplstp_fm_flags_r, tvb, offset, 1, FALSE);
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offset = offset + 1;
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/* Refresh-Timer field */
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proto_tree_add_item (fm_tree, hf_mplstp_fm_refresh_timer, tvb, offset,
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1, ENC_BIG_ENDIAN);
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offset = offset + 1;
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/* FM-TLV Length field*/
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proto_tree_add_item (fm_tree, hf_mplstp_fm_total_tlv_len, tvb, offset,
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1, ENC_BIG_ENDIAN);
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offset = offset + 1;
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if (tlv_len != 0)
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{
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/* FM TLVs*/
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next_tvb = tvb_new_subset_remaining (tvb, offset);
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dissect_mplstp_fm_tlv (next_tvb, tree);
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}
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return;
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}
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void
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proto_register_mplstp_lock(void)
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{
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static hf_register_info hf[] = {
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{&hf_mplstp_lock_version,
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{"Version", "mplstp_lock.version", FT_UINT8,
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BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{&hf_mplstp_lock_reserved,
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{"Reserved", "mplstp_lock.reserved", FT_UINT24,
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BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{&hf_mplstp_lock_refresh_timer,
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{"Refresh-timer value", "mplstp_lock.refresh-timer", FT_UINT8,
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BASE_DEC, NULL, 0x0, NULL, HFILL }},
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};
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static gint *ett[] = {
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&ett_mplstp_lock,
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};
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proto_mplstp_lock =
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proto_register_protocol("MPLS-TP Lock-Instruct", "MPLS[-TP] Lock-Instruct "
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"Lock-Instruct (LI) Protocol",
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"mplstp_lock");
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proto_register_field_array(proto_mplstp_lock, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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register_dissector("mplstp_lock", dissect_mplstp_lock, proto_mplstp_lock);
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}
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void
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proto_register_mplstp_fm(void)
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{
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static hf_register_info hf[] = {
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{&hf_mplstp_fm_version,
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{"Version", "mplstp_oam.version", FT_UINT8,
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BASE_HEX, NULL, 0x0, NULL, HFILL }},
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||||
{&hf_mplstp_fm_reserved,
|
||||
{"Reserved", "mplstp_oam.reserved", FT_UINT8,
|
||||
BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
||||
|
||||
{&hf_mplstp_fm_refresh_timer,
|
||||
{"Refresh-timer value", "mplstp_oam.refresh.timer", FT_UINT8,
|
||||
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
||||
|
||||
{&hf_mplstp_fm_total_tlv_len,
|
||||
{"FM TLV Length", "mplstp_oam.total.tlv.len", FT_UINT8,
|
||||
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
||||
|
||||
{&hf_mplstp_fm_if_tlv_type,
|
||||
{"Type : IF-ID TLV", "mplstp_oam.if_id_tlv_type", FT_UINT8,
|
||||
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
||||
|
||||
{&hf_mplstp_fm_global_tlv_type,
|
||||
{"Type : GLOBAL-ID TLV", "mplstp_oam.global_id_tlv_type", FT_UINT8,
|
||||
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
||||
|
||||
{&hf_mplstp_fm_tlv_len,
|
||||
{"Length", "mplstp_oam.tlv_len", FT_UINT8,
|
||||
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
||||
|
||||
{&hf_mplstp_fm_node_id,
|
||||
{"Node id", "mplstp_oam.node_id", FT_IPv4,
|
||||
BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
||||
|
||||
{&hf_mplstp_fm_if_num,
|
||||
{"Interface Number", "mplstp_oam.if_num", FT_UINT32,
|
||||
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
||||
|
||||
{&hf_mplstp_fm_global_id,
|
||||
{"Global id", "mplstp_oam.global_id", FT_UINT32,
|
||||
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
||||
|
||||
{&hf_mplstp_fm_msg_type,
|
||||
{"Message Type", "mplstp_oam.message.type", FT_UINT8,
|
||||
BASE_DEC, VALS(fm_msg_type), 0x0, "MPLS-TP FM Message Type", HFILL }},
|
||||
|
||||
{ &hf_mplstp_fm_flags,
|
||||
{ "FM Flags", "mplstp_oam.flags",
|
||||
FT_UINT8, BASE_HEX, NULL, 0x0000, "MPLS-TP FM Flags", HFILL}
|
||||
},
|
||||
|
||||
{ &hf_mplstp_fm_flags_l,
|
||||
{ "Link Down Indication", "mplstp_oam.flag_l",
|
||||
FT_BOOLEAN, 8, NULL, 0x0002, NULL, HFILL}
|
||||
},
|
||||
|
||||
{ &hf_mplstp_fm_flags_r,
|
||||
{ "FM Condition Cleared", "mplstp_oam.flag_r",
|
||||
FT_BOOLEAN, 8, NULL, 0x0001, "Fault Condition Cleared", HFILL}
|
||||
},
|
||||
};
|
||||
|
||||
static gint *ett[] = {
|
||||
&ett_mplstp_fm,
|
||||
&ett_mplstp_fm_tlv_tree,
|
||||
&ett_mplstp_fm_flags,
|
||||
};
|
||||
|
||||
proto_mplstp_fm =
|
||||
proto_register_protocol("MPLS-TP Fault-Management", "MPLS[-TP] Fault-Management "
|
||||
"Fault-Management (FM) Protocol",
|
||||
"mplstp_fm");
|
||||
|
||||
proto_register_field_array(proto_mplstp_fm, hf, array_length(hf));
|
||||
proto_register_subtree_array(ett, array_length(ett));
|
||||
|
||||
register_dissector("mplstp_fm", dissect_mplstp_fm, proto_mplstp_fm);
|
||||
}
|
||||
Loading…
Reference in New Issue