1448 lines
63 KiB
C
1448 lines
63 KiB
C
/* packet-mpls-echo.c
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* Routines for Multiprotocol Label Switching Echo dissection
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* Copyright 2004, Carlos Pignataro <cpignata@cisco.com>
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*
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* $Id$
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/sminmpec.h>
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#include "packet-ntp.h"
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#include "packet-ldp.h"
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#include "packet-mpls.h"
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#define UDP_PORT_MPLS_ECHO 3503
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void proto_reg_handoff_mpls_echo(void);
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static int proto_mpls_echo = -1;
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static int hf_mpls_echo_version = -1;
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static int hf_mpls_echo_mbz = -1;
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static int hf_mpls_echo_gflags = -1;
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static int hf_mpls_echo_flag_sbz = -1;
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static int hf_mpls_echo_flag_v = -1;
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static int hf_mpls_echo_msgtype = -1;
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static int hf_mpls_echo_replymode = -1;
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static int hf_mpls_echo_returncode = -1;
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static int hf_mpls_echo_returnsubcode = -1;
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static int hf_mpls_echo_handle = -1;
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static int hf_mpls_echo_sequence = -1;
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static int hf_mpls_echo_ts_sent = -1;
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static int hf_mpls_echo_ts_rec = -1;
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static int hf_mpls_echo_tlv_type = -1;
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static int hf_mpls_echo_tlv_len = -1;
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static int hf_mpls_echo_tlv_value = -1;
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static int hf_mpls_echo_tlv_fec_type = -1;
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static int hf_mpls_echo_tlv_fec_len = -1;
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static int hf_mpls_echo_tlv_fec_value = -1;
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static int hf_mpls_echo_tlv_fec_ldp_ipv4 = -1;
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static int hf_mpls_echo_tlv_fec_ldp_ipv4_mask = -1;
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static int hf_mpls_echo_tlv_fec_ldp_ipv6 = -1;
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static int hf_mpls_echo_tlv_fec_ldp_ipv6_mask = -1;
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static int hf_mpls_echo_tlv_fec_rsvp_ipv4_ipv4_endpoint = -1;
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static int hf_mpls_echo_tlv_fec_rsvp_ipv6_ipv6_endpoint = -1;
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static int hf_mpls_echo_tlv_fec_rsvp_ip_mbz1 = -1;
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static int hf_mpls_echo_tlv_fec_rsvp_ip_tunnel_id = -1;
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static int hf_mpls_echo_tlv_fec_rsvp_ipv4_ext_tunnel_id = -1;
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static int hf_mpls_echo_tlv_fec_rsvp_ipv4_ipv4_sender = -1;
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static int hf_mpls_echo_tlv_fec_rsvp_ipv6_ext_tunnel_id = -1;
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static int hf_mpls_echo_tlv_fec_rsvp_ipv6_ipv6_sender = -1;
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static int hf_mpls_echo_tlv_fec_rsvp_ip_mbz2 = -1;
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static int hf_mpls_echo_tlv_fec_rsvp_ip_lsp_id = -1;
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static int hf_mpls_echo_tlv_fec_l2cid_sender = -1;
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static int hf_mpls_echo_tlv_fec_l2cid_remote = -1;
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static int hf_mpls_echo_tlv_fec_l2cid_vcid = -1;
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static int hf_mpls_echo_tlv_fec_l2cid_encap = -1;
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static int hf_mpls_echo_tlv_fec_l2cid_mbz = -1;
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static int hf_mpls_echo_tlv_fec_bgp_nh = -1;
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static int hf_mpls_echo_tlv_fec_bgp_ipv4 = -1;
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static int hf_mpls_echo_tlv_fec_bgp_len = -1;
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static int hf_mpls_echo_tlv_fec_gen_ipv4 = -1;
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static int hf_mpls_echo_tlv_fec_gen_ipv4_mask = -1;
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static int hf_mpls_echo_tlv_fec_gen_ipv6 = -1;
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static int hf_mpls_echo_tlv_fec_gen_ipv6_mask = -1;
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static int hf_mpls_echo_tlv_fec_nil_label = -1;
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static int hf_mpls_echo_tlv_ds_map_mtu = -1;
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static int hf_mpls_echo_tlv_ds_map_addr_type = -1;
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static int hf_mpls_echo_tlv_ds_map_res = -1;
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static int hf_mpls_echo_tlv_ds_map_flag_res = -1;
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static int hf_mpls_echo_tlv_ds_map_flag_i = -1;
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static int hf_mpls_echo_tlv_ds_map_flag_n = -1;
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static int hf_mpls_echo_tlv_ds_map_ds_ip = -1;
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static int hf_mpls_echo_tlv_ds_map_int_ip = -1;
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static int hf_mpls_echo_tlv_ds_map_if_index = -1;
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static int hf_mpls_echo_tlv_ds_map_ds_ipv6 = -1;
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static int hf_mpls_echo_tlv_ds_map_int_ipv6 = -1;
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static int hf_mpls_echo_tlv_ds_map_hash_type = -1;
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static int hf_mpls_echo_tlv_ds_map_depth = -1;
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static int hf_mpls_echo_tlv_ds_map_muti_len = -1;
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static int hf_mpls_echo_tlv_ds_map_mp_ip = -1;
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static int hf_mpls_echo_tlv_ds_map_mp_mask = -1;
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static int hf_mpls_echo_tlv_ds_map_mp_ip_low = -1;
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static int hf_mpls_echo_tlv_ds_map_mp_ip_high = -1;
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static int hf_mpls_echo_tlv_ds_map_mp_value = -1;
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static int hf_mpls_echo_tlv_ds_map_mp_label = -1;
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static int hf_mpls_echo_tlv_ds_map_mp_exp = -1;
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static int hf_mpls_echo_tlv_ds_map_mp_bos = -1;
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static int hf_mpls_echo_tlv_ds_map_mp_proto = -1;
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static int hf_mpls_echo_tlv_padaction = -1;
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static int hf_mpls_echo_tlv_padding = -1;
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static int hf_mpls_echo_tlv_vendor = -1;
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static int hf_mpls_echo_tlv_ilso_ipv4_addr = -1;
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static int hf_mpls_echo_tlv_ilso_ipv4_int_addr = -1;
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static int hf_mpls_echo_tlv_ilso_ipv6_addr = -1;
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static int hf_mpls_echo_tlv_ilso_ipv6_int_addr = -1;
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static int hf_mpls_echo_tlv_ilso_label = -1;
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static int hf_mpls_echo_tlv_ilso_exp = -1;
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static int hf_mpls_echo_tlv_ilso_bos = -1;
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static int hf_mpls_echo_tlv_ilso_ttl = -1;
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static int hf_mpls_echo_tlv_rto_ipv4 = -1;
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static int hf_mpls_echo_tlv_rto_ipv6 = -1;
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static int hf_mpls_echo_tlv_reply_tos = -1;
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static int hf_mpls_echo_tlv_reply_tos_mbz = -1;
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static int hf_mpls_echo_tlv_errored_type = -1;
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static gint ett_mpls_echo = -1;
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static gint ett_mpls_echo_gflags = -1;
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static gint ett_mpls_echo_tlv = -1;
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static gint ett_mpls_echo_tlv_fec = -1;
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static gint ett_mpls_echo_tlv_ds_map = -1;
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static gint ett_mpls_echo_tlv_ilso = -1;
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static int mpls_echo_udp_port = 0;
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static guint32 global_mpls_echo_udp_port = UDP_PORT_MPLS_ECHO;
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static const value_string mpls_echo_msgtype[] = {
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{1, "MPLS Echo Request"},
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{2, "MPLS Echo Reply"},
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{3, "MPLS Data Plane Verification Request"},
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{4, "MPLS Data Plane Verification Reply"},
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{0, NULL}
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};
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static const value_string mpls_echo_replymode[] = {
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{1, "Do not reply"},
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{2, "Reply via an IPv4/IPv6 UDP packet"},
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{3, "Reply via an IPv4/IPv6 UDP packet with Router Alert"},
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{4, "Reply via application level control channel"},
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{0, NULL}
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};
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static const value_string mpls_echo_returncode[] = {
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{0, "No return code"},
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{1, "Malformed echo request received"},
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{2, "One or more of the TLVs was not understood"},
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{3, "Replying router is an egress for the FEC at stack depth RSC"},
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{4, "Replying router has no mapping for the FEC at stack depth RSC"},
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{5, "Reserved"},
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{6, "Reserved"},
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{7, "Reserved"},
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{8, "Label switched at stack-depth RSC"},
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{9, "Label switched but no MPLS forwarding at stack-depth RSC"},
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{10, "Mapping for this FEC is not the given label at stack depth RSC"},
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{11, "No label entry at stack-depth RSC"},
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{12, "Protocol not associated with interface at FEC stack depth RSC"},
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{13, "Premature termination, label stack shrinking to a single label"},
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{0, NULL}
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};
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#define TLV_TARGET_FEC_STACK 0x0001
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#define TLV_DOWNSTREAM_MAPPING 0x0002
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#define TLV_PAD 0x0003
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#define TLV_ERROR_CODE 0x0004
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#define TLV_VENDOR_CODE 0x0005
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#define TLV_TBD 0x0006
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#define TLV_ILSO_IPv4 0x0007
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#define TLV_ILSO_IPv6 0x0008
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#define TLV_ERRORED_TLV 0x0009
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#define TLV_REPLY_TOS 0x000A
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#define TLV_RTO_IPv4 0x000B
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#define TLV_RTO_IPv6 0x000C
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#define TLV_VENDOR_PRIVATE_START 0xFC00
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#define TLV_VENDOR_PRIVATE_END 0xFFFF
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/* MPLS Echo TLV Type names */
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static const value_string mpls_echo_tlv_type_names[] = {
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{ TLV_TARGET_FEC_STACK, "Target FEC Stack" },
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{ TLV_DOWNSTREAM_MAPPING, "Downstream Mapping" },
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{ TLV_PAD, "Pad" },
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{ TLV_ERROR_CODE, "Error Code" },
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{ TLV_VENDOR_CODE, "Vendor Enterprise Code" },
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{ TLV_TBD, "TDB" },
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{ TLV_ILSO_IPv4, "IPv4 Interface and Label Stack Object" },
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{ TLV_ILSO_IPv6, "IPv6 Interface and Label Stack Object" },
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{ TLV_ERRORED_TLV, "Errored TLVs" },
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{ TLV_REPLY_TOS, "Reply TOS Byte" },
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{ TLV_RTO_IPv4, "IPv4 Reply-to Object" },
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{ TLV_RTO_IPv6, "IPv6 Reply-to Object" },
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{ TLV_VENDOR_PRIVATE_START, "Vendor Private" },
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{ 0, NULL}
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};
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#define TLV_FEC_STACK_LDP_IPv4 1
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#define TLV_FEC_STACK_LDP_IPv6 2
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#define TLV_FEC_STACK_RSVP_IPv4 3
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#define TLV_FEC_STACK_RSVP_IPv6 4
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#define TLV_FEC_STACK_RES 5
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#define TLV_FEC_STACK_VPN_IPv4 6
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#define TLV_FEC_STACK_VPN_IPv6 7
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#define TLV_FEC_STACK_L2_VPN 8
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#define TLV_FEC_STACK_L2_CID_OLD 9
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#define TLV_FEC_STACK_L2_CID_NEW 10
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#define TLV_FEC_STACK_L2_FEC_129 11
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#define TLV_FEC_STACK_BGP_LAB_v4 12
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#define TLV_FEC_STACK_BGP_LAB_v6 13
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#define TLV_FEC_STACK_GEN_IPv4 14
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#define TLV_FEC_STACK_GEN_IPv6 15
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#define TLV_FEC_STACK_NIL 16
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#define TLV_FEC_VENDOR_PRIVATE_START 0xFC00
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#define TLV_FEC_VENDOR_PRIVATE_END 0xFFFF
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/* FEC sub-TLV Type names */
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static const value_string mpls_echo_tlv_fec_names[] = {
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{ TLV_FEC_STACK_LDP_IPv4, "LDP IPv4 prefix"},
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{ TLV_FEC_STACK_LDP_IPv6, "LDP IPv6 prefix"},
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{ TLV_FEC_STACK_RSVP_IPv4, "RSVP IPv4 Session Query"},
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{ TLV_FEC_STACK_RSVP_IPv6, "RSVP IPv6 Session Query"},
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{ TLV_FEC_STACK_RES, "Reserved"},
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{ TLV_FEC_STACK_VPN_IPv4, "VPN IPv4 prefix"},
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{ TLV_FEC_STACK_VPN_IPv6, "VPN IPv6 prefix"},
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{ TLV_FEC_STACK_L2_VPN, "L2 VPN endpoint"},
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{ TLV_FEC_STACK_L2_CID_OLD, "FEC 128 Pseudowire (old)"},
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{ TLV_FEC_STACK_L2_CID_NEW, "FEC 128 Pseudowire (new)"},
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{ TLV_FEC_STACK_L2_FEC_129, "FEC 129 Pseudowire"},
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{ TLV_FEC_STACK_BGP_LAB_v4, "BGP labeled IPv4 prefix"},
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{ TLV_FEC_STACK_BGP_LAB_v6, "BGP labeled IPv6 prefix"},
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{ TLV_FEC_STACK_GEN_IPv4, "Generic IPv4 prefix"},
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{ TLV_FEC_STACK_GEN_IPv6, "Generic IPv6 prefix"},
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{ TLV_FEC_STACK_NIL, "Nil FEC"},
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{ TLV_FEC_VENDOR_PRIVATE_START, "Vendor Private"},
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{ 0, NULL}
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};
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static const value_string mpls_echo_tlv_pad[] = {
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{ 1, "Drop Pad TLV from reply" },
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{ 2, "Copy Pad TLV to reply" },
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{ 0, NULL}
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};
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#define TLV_DS_MAP_ADDR_IPv4 1
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#define TLV_DS_MAP_ADDR_UNNUM_IPv4 2
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#define TLV_DS_MAP_ADDR_IPv6 3
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#define TLV_DS_MAP_ADDR_UNNUM_IPv6 4
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static const value_string mpls_echo_tlv_ds_map_addr_type[] = {
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{TLV_DS_MAP_ADDR_IPv4, "IPv4 Numbered"},
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{TLV_DS_MAP_ADDR_UNNUM_IPv4, "IPv4 Unnumbered"},
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{TLV_DS_MAP_ADDR_IPv6, "IPv6 Numbered"},
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{TLV_DS_MAP_ADDR_UNNUM_IPv6, "IPv6 Unnumbered"},
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{0, NULL}
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};
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#define TLV_DS_MAP_HASH_NO_MP 0
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#define TLV_DS_MAP_HASH_LABEL 1
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#define TLV_DS_MAP_HASH_IP 2
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#define TLV_DS_MAP_HASH_LABEL_RANGE 3
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#define TLV_DS_MAP_HASH_IP_RANGE 4
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#define TLV_DS_MAP_HASH_NO_LABEL 5
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#define TLV_DS_MAP_HASH_ALL_IP 6
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#define TLV_DS_MAP_HASH_NO_MATCH 7
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#define TLV_DS_MAP_HASH_BITMASK_IP 8
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#define TLV_DS_MAP_HASH_BITMASK_LABEL 9
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static const value_string mpls_echo_tlv_ds_map_hash_type[] = {
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{TLV_DS_MAP_HASH_NO_MP, "no multipath"},
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{TLV_DS_MAP_HASH_LABEL, "label"},
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{TLV_DS_MAP_HASH_IP, "IP address"},
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{TLV_DS_MAP_HASH_LABEL_RANGE, "label range"},
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{TLV_DS_MAP_HASH_IP_RANGE, "IP address range"},
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{TLV_DS_MAP_HASH_NO_LABEL, "no more labels"},
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{TLV_DS_MAP_HASH_ALL_IP, "All IP addresses"},
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{TLV_DS_MAP_HASH_NO_MATCH, "no match"},
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{TLV_DS_MAP_HASH_BITMASK_IP, "Bit-masked IPv4 address set"},
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{TLV_DS_MAP_HASH_BITMASK_LABEL, "Bit-masked label set"},
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{0, NULL}
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};
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static const value_string mpls_echo_tlv_ds_map_mp_proto[] = {
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{0, "Unknown"},
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{1, "Static"},
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{2, "BGP"},
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{3, "LDP"},
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{4, "RSVP-TE"},
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{5, "Reserved"},
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{0, NULL}
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};
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/*
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* Dissector for FEC sub-TLVs
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*/
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static void
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dissect_mpls_echo_tlv_fec(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
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{
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proto_tree *ti = NULL, *tlv_fec_tree = NULL;
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proto_item *hidden_item;
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guint16 index = 1, nil_index = 1, type, saved_type;
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int length, nil_length, pad;
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guint32 label;
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guint8 exp, bos, ttl;
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if (tree){
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while (rem >= 4){ /* Type, Length */
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type = tvb_get_ntohs(tvb, offset);
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saved_type = type;
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/* Check for Vendor Private sub-TLVs */
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if(type >= TLV_FEC_VENDOR_PRIVATE_START) /* && <= TLV_FEC_VENDOR_PRIVATE_END always true */
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type = TLV_FEC_VENDOR_PRIVATE_START;
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length = tvb_get_ntohs(tvb, offset + 2);
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ti = proto_tree_add_text(tree, tvb, offset, length + 4, "FEC Element %u: %s",
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index, val_to_str(type, mpls_echo_tlv_fec_names,
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"Unknown FEC type (0x%04X)"));
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tlv_fec_tree = proto_item_add_subtree(ti, ett_mpls_echo_tlv_fec);
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if(tlv_fec_tree == NULL) return;
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/* FEC sub-TLV Type and Length */
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proto_tree_add_uint_format(tlv_fec_tree, hf_mpls_echo_tlv_fec_type, tvb,
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offset, 2, saved_type, "Type: %s (%u)",
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val_to_str(type, mpls_echo_tlv_fec_names, "Unknown sub-TLV type"), saved_type);
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proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_len, tvb, offset + 2,
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2, FALSE);
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if (length + 4 > rem){
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proto_tree_add_text(tlv_fec_tree, tvb, offset, rem,
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"Error processing FEC sub-TLV: length is %u and reminder is %u",
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length, rem - 4);
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return;
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}
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/* FEC sub-TLV Value */
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switch (type) {
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case TLV_FEC_STACK_LDP_IPv4:
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_ldp_ipv4,
|
|
tvb, offset + 4, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_ldp_ipv4_mask,
|
|
tvb, offset + 8, 1, FALSE);
|
|
if (length == 8)
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset + 9, 3, "Padding");
|
|
break;
|
|
case TLV_FEC_STACK_LDP_IPv6:
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_ldp_ipv6,
|
|
tvb, offset + 4, 16, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_ldp_ipv6_mask,
|
|
tvb, offset + 20, 1, FALSE);
|
|
if (length == 20)
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset + 21, 3, "Padding");
|
|
break;
|
|
case TLV_FEC_STACK_RSVP_IPv4:
|
|
if (length != 20){
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset, rem,
|
|
"Error processing sub-TLV: length is %d, should be 20", length);
|
|
return;
|
|
}
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ipv4_ipv4_endpoint,
|
|
tvb, offset + 4, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ip_mbz1,
|
|
tvb, offset + 8, 2, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ip_tunnel_id,
|
|
tvb, offset + 10, 2, FALSE);
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset + 12, 4,
|
|
"Extended Tunnel ID: 0x%08X (%s)", tvb_get_ntohl(tvb, offset + 12),
|
|
ip_to_str(tvb_get_ptr(tvb, offset + 12, 4)));
|
|
hidden_item = proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ipv4_ext_tunnel_id,
|
|
tvb, offset + 12, 4, FALSE);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ipv4_ipv4_sender,
|
|
tvb, offset + 16, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ip_mbz2,
|
|
tvb, offset + 20, 2, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ip_lsp_id,
|
|
tvb, offset + 22, 2, FALSE);
|
|
break;
|
|
case TLV_FEC_STACK_RSVP_IPv6:
|
|
if (length != 56){
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset, rem,
|
|
"Error processing sub-TLV: length is %d, should be 56", length);
|
|
return;
|
|
}
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ipv6_ipv6_endpoint,
|
|
tvb, offset + 4, 16, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ip_mbz1,
|
|
tvb, offset + 20, 2, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ip_tunnel_id,
|
|
tvb, offset + 22, 2, FALSE);
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset + 24, 16,
|
|
"Extended Tunnel ID: 0x%s (%s)",
|
|
tvb_bytes_to_str(tvb, offset + 24, 16),
|
|
ip6_to_str((const struct e_in6_addr *)tvb_get_ptr(tvb, offset + 24, 16)));
|
|
hidden_item = proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ipv6_ext_tunnel_id,
|
|
tvb, offset + 24, 16, FALSE);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ipv6_ipv6_sender,
|
|
tvb, offset + 40, 16, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ip_mbz2,
|
|
tvb, offset + 56, 2, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_rsvp_ip_lsp_id,
|
|
tvb, offset + 58, 2, FALSE);
|
|
break;
|
|
case TLV_FEC_STACK_L2_CID_OLD:
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_l2cid_remote,
|
|
tvb, offset + 4, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_l2cid_vcid,
|
|
tvb, offset + 8, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_l2cid_encap,
|
|
tvb, offset + 12, 2, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_l2cid_mbz,
|
|
tvb, offset + 14, 2, FALSE);
|
|
break;
|
|
case TLV_FEC_STACK_L2_CID_NEW:
|
|
if (length < 14){
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset, rem,
|
|
"Error processing sub-TLV: length is %d, should be 14", length);
|
|
return;
|
|
}
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_l2cid_sender,
|
|
tvb, offset + 4, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_l2cid_remote,
|
|
tvb, offset + 8, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_l2cid_vcid,
|
|
tvb, offset + 12, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_l2cid_encap,
|
|
tvb, offset + 16, 2, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_l2cid_mbz,
|
|
tvb, offset + 18, 2, FALSE);
|
|
break;
|
|
case TLV_FEC_VENDOR_PRIVATE_START:
|
|
if (length < 4) { /* SMI Enterprise code */
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset + 4, length,
|
|
"Error processing Vendor Private sub-TLV: length is %d, should be >= 4",
|
|
length);
|
|
} else {
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_vendor, tvb,
|
|
offset + 4, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_value, tvb,
|
|
offset + 8, length - 4, FALSE);
|
|
}
|
|
break;
|
|
case TLV_FEC_STACK_BGP_LAB_v4:
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_bgp_nh,
|
|
tvb, offset + 4, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_bgp_ipv4,
|
|
tvb, offset + 8, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_bgp_len,
|
|
tvb, offset + 12, 1, FALSE);
|
|
if (length == 12)
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset + 13, 3, "Padding");
|
|
break;
|
|
case TLV_FEC_STACK_GEN_IPv4:
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_gen_ipv4,
|
|
tvb, offset + 4, 4, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_gen_ipv4_mask,
|
|
tvb, offset + 8, 1, FALSE);
|
|
if (length == 8)
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset + 9, 3, "Padding");
|
|
break;
|
|
case TLV_FEC_STACK_GEN_IPv6:
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_gen_ipv6,
|
|
tvb, offset + 4, 16, FALSE);
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_gen_ipv6_mask,
|
|
tvb, offset + 20, 1, FALSE);
|
|
if (length == 20)
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset + 21, 3, "Padding");
|
|
break;
|
|
case TLV_FEC_STACK_NIL:
|
|
nil_length = length;
|
|
while (nil_length >= 4){
|
|
decode_mpls_label(tvb, offset + 4, &label, &exp, &bos, &ttl);
|
|
if (label <= LABEL_MAX_RESERVED){
|
|
proto_tree_add_uint_format(tlv_fec_tree, hf_mpls_echo_tlv_fec_nil_label,
|
|
tvb, offset + 4, 3, label, "Label %u: %u (%s)", nil_index, label,
|
|
val_to_str(label, special_labels, "Reserved - Unknown"));
|
|
} else {
|
|
proto_tree_add_uint_format(tlv_fec_tree, hf_mpls_echo_tlv_fec_nil_label,
|
|
tvb, offset + 4, 3, label, "Label %u: %u", nil_index, label);
|
|
}
|
|
nil_length -= 4;
|
|
offset += 4;
|
|
nil_index++;
|
|
}
|
|
break;
|
|
|
|
case TLV_FEC_STACK_RES:
|
|
case TLV_FEC_STACK_VPN_IPv4:
|
|
case TLV_FEC_STACK_VPN_IPv6:
|
|
case TLV_FEC_STACK_L2_VPN:
|
|
default:
|
|
if(length)
|
|
proto_tree_add_item(tlv_fec_tree, hf_mpls_echo_tlv_fec_value,
|
|
tvb, offset + 4, length, FALSE);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Check for padding based on sub-TLV length alignment;
|
|
* FEC sub-TLVs is zero-padded to align to four-octet boundary.
|
|
*/
|
|
if (length % 4){
|
|
pad = 4 - (length % 4);
|
|
if (length + 4 + pad > rem){
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset, rem,
|
|
"Error processing FEC sub-TLV: padded length is %u and reminder is %u",
|
|
length + pad, rem - 4);
|
|
return;
|
|
} else {
|
|
proto_tree_add_text(tlv_fec_tree, tvb, offset + 4 + length, pad, "Padding");
|
|
}
|
|
length += pad;
|
|
}
|
|
|
|
rem -= 4 + length;
|
|
offset += 4 + length;
|
|
index++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dissector for Downstream Mapping TLV
|
|
*/
|
|
static void
|
|
dissect_mpls_echo_tlv_ds_map(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
|
|
{
|
|
proto_tree *ti = NULL, *tlv_ds_map_tree = NULL;
|
|
guint16 mplen, index = 1;
|
|
guint32 label;
|
|
guint8 exp, bos, proto;
|
|
guint8 hash_type, addr_type;
|
|
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_mtu, tvb,
|
|
offset, 2, FALSE);
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_addr_type, tvb,
|
|
offset + 2, 1, FALSE);
|
|
ti = proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_res, tvb,
|
|
offset + 3, 1, FALSE);
|
|
tlv_ds_map_tree = proto_item_add_subtree(ti, ett_mpls_echo_tlv_ds_map);
|
|
|
|
proto_tree_add_item(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_flag_res, tvb,
|
|
offset + 3, 1, FALSE);
|
|
proto_tree_add_item(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_flag_i, tvb,
|
|
offset + 3, 1, FALSE);
|
|
proto_tree_add_item(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_flag_n, tvb,
|
|
offset + 3, 1, FALSE);
|
|
|
|
addr_type = tvb_get_guint8(tvb, offset + 2);
|
|
switch(addr_type){
|
|
case TLV_DS_MAP_ADDR_IPv4:
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_ds_ip, tvb,
|
|
offset + 4, 4, FALSE);
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_int_ip, tvb,
|
|
offset + 8, 4, FALSE);
|
|
break;
|
|
case TLV_DS_MAP_ADDR_UNNUM_IPv4:
|
|
case TLV_DS_MAP_ADDR_UNNUM_IPv6:
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_ds_ip, tvb,
|
|
offset + 4, 4, FALSE);
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_if_index, tvb,
|
|
offset + 8, 4, FALSE);
|
|
break;
|
|
case TLV_DS_MAP_ADDR_IPv6:
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_ds_ipv6, tvb,
|
|
offset + 4, 16, FALSE);
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_int_ipv6, tvb,
|
|
offset + 20, 16, FALSE);
|
|
rem -= 24;
|
|
offset += 24;
|
|
break;
|
|
default:
|
|
proto_tree_add_text(tree, tvb, offset + 4, 8,
|
|
"Error processing TLV: Unknown Address Type of %u",
|
|
addr_type);
|
|
break;
|
|
}
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_hash_type, tvb,
|
|
offset + 12, 1, FALSE);
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_depth, tvb,
|
|
offset + 13, 1, FALSE);
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_muti_len, tvb,
|
|
offset + 14, 2, FALSE);
|
|
|
|
/* Get the Multipath Length and Hash Type */
|
|
mplen = tvb_get_ntohs(tvb, offset + 14);
|
|
hash_type = tvb_get_guint8(tvb, offset + 12);
|
|
|
|
rem -= 16;
|
|
offset += 16;
|
|
if (rem < mplen){
|
|
proto_tree_add_text(tree, tvb, offset, rem,
|
|
"Error processing TLV: Multi Path length is %d and reminder is %u",
|
|
mplen, rem);
|
|
return;
|
|
}
|
|
rem -= mplen;
|
|
if(mplen){
|
|
switch(hash_type){
|
|
case TLV_DS_MAP_HASH_IP:
|
|
if(mplen != 4){
|
|
proto_tree_add_text(tree, tvb, offset, mplen,
|
|
"Multi Path length is %u and should be 4", mplen);
|
|
break;
|
|
}
|
|
ti = proto_tree_add_text(tree, tvb, offset, 4,
|
|
"Multipath Information");
|
|
tlv_ds_map_tree = proto_item_add_subtree(ti, ett_mpls_echo_tlv_ds_map);
|
|
proto_tree_add_item(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_mp_ip, tvb,
|
|
offset, 4, FALSE);
|
|
break;
|
|
case TLV_DS_MAP_HASH_IP_RANGE:
|
|
if(mplen != 8){
|
|
proto_tree_add_text(tree, tvb, offset, mplen,
|
|
"Multi Path length is %u and should be 8", mplen);
|
|
break;
|
|
}
|
|
ti = proto_tree_add_text(tree, tvb, offset, 8,
|
|
"Multipath Information");
|
|
tlv_ds_map_tree = proto_item_add_subtree(ti, ett_mpls_echo_tlv_ds_map);
|
|
proto_tree_add_item(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_mp_ip_low, tvb,
|
|
offset, 4, FALSE);
|
|
proto_tree_add_item(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_mp_ip_high, tvb,
|
|
offset + 4, 4, FALSE);
|
|
break;
|
|
case TLV_DS_MAP_HASH_NO_MP:
|
|
case TLV_DS_MAP_HASH_NO_LABEL:
|
|
case TLV_DS_MAP_HASH_ALL_IP:
|
|
case TLV_DS_MAP_HASH_NO_MATCH:
|
|
proto_tree_add_text(tree, tvb, offset, mplen,
|
|
"No Multipath Information");
|
|
break;
|
|
case TLV_DS_MAP_HASH_BITMASK_IP:
|
|
if(mplen < 4){
|
|
proto_tree_add_text(tree, tvb, offset, mplen,
|
|
"Multi Path length is %u and should be >= 4", mplen);
|
|
break;
|
|
}
|
|
ti = proto_tree_add_text(tree, tvb, offset, mplen,
|
|
"Multipath Information");
|
|
tlv_ds_map_tree = proto_item_add_subtree(ti, ett_mpls_echo_tlv_ds_map);
|
|
proto_tree_add_item(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_mp_ip, tvb,
|
|
offset, 4, FALSE);
|
|
if(mplen > 4)
|
|
proto_tree_add_item(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_mp_mask, tvb,
|
|
offset + 4, mplen - 4, FALSE);
|
|
break;
|
|
default:
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ds_map_mp_value, tvb,
|
|
offset, mplen, FALSE);
|
|
break;
|
|
}
|
|
}
|
|
|
|
offset += mplen;
|
|
|
|
while (rem >= 4){
|
|
decode_mpls_label(tvb, offset, &label, &exp, &bos, &proto);
|
|
ti = proto_tree_add_text(tree, tvb, offset, 4, "Downstream Label Element %u",
|
|
index);
|
|
tlv_ds_map_tree = proto_item_add_subtree(ti, ett_mpls_echo_tlv_ds_map);
|
|
proto_item_append_text(ti, ", Label: %u", label);
|
|
if (label <= LABEL_MAX_RESERVED){
|
|
proto_tree_add_uint_format(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_mp_label,
|
|
tvb, offset, 3, label, "Downstream Label: %u (%s)", label,
|
|
val_to_str(label, special_labels, "Reserved - Unknown"));
|
|
proto_item_append_text(ti, " (%s)", val_to_str(label, special_labels,
|
|
"Reserved - Unknown"));
|
|
} else {
|
|
proto_tree_add_uint_format(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_mp_label,
|
|
tvb, offset, 3, label, "Downstream Label: %u", label);
|
|
}
|
|
proto_item_append_text(ti, ", Exp: %u, BOS: %u", exp, bos);
|
|
proto_tree_add_uint_format(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_mp_exp,
|
|
tvb, offset + 2, 1, exp, "Downstream Exp: %u", exp);
|
|
proto_tree_add_uint_format(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_mp_bos,
|
|
tvb, offset + 2, 1, bos, "Downstream BOS: %u", bos);
|
|
proto_tree_add_item(tlv_ds_map_tree, hf_mpls_echo_tlv_ds_map_mp_proto,
|
|
tvb, offset + 3, 1, FALSE);
|
|
proto_item_append_text(ti, ", Protocol: %u (%s)", proto, val_to_str(proto,
|
|
mpls_echo_tlv_ds_map_mp_proto, "Unknown"));
|
|
rem -= 4;
|
|
offset += 4;
|
|
index++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dissector for IPv4 and IPv6 Interface and Label Stack Object
|
|
*/
|
|
static void
|
|
dissect_mpls_echo_tlv_ilso(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem, gboolean is_ipv6)
|
|
{
|
|
proto_tree *ti = NULL, *tlv_ilso = NULL;
|
|
guint16 index = 1;
|
|
guint32 label;
|
|
guint8 exp, bos, ttl;
|
|
|
|
if (is_ipv6){
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ilso_ipv6_addr, tvb,
|
|
offset, 16, FALSE);
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ilso_ipv6_int_addr, tvb,
|
|
offset + 16, 16, FALSE);
|
|
|
|
offset += 32;
|
|
rem -= 32;
|
|
} else {
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ilso_ipv4_addr, tvb,
|
|
offset, 4, FALSE);
|
|
proto_tree_add_item(tree, hf_mpls_echo_tlv_ilso_ipv4_int_addr, tvb,
|
|
offset + 4, 4, FALSE);
|
|
|
|
offset += 8;
|
|
rem -= 8;
|
|
}
|
|
|
|
|
|
while (rem >= 4){
|
|
decode_mpls_label(tvb, offset, &label, &exp, &bos, &ttl);
|
|
ti = proto_tree_add_text(tree, tvb, offset, 4, "Label Stack Element %u",
|
|
index);
|
|
tlv_ilso = proto_item_add_subtree(ti, ett_mpls_echo_tlv_ilso);
|
|
proto_item_append_text(ti, ", Label: %u", label);
|
|
if (label <= LABEL_MAX_RESERVED){
|
|
proto_tree_add_uint_format(tlv_ilso, hf_mpls_echo_tlv_ilso_label,
|
|
tvb, offset, 3, label, "Label: %u (%s)", label,
|
|
val_to_str(label, special_labels, "Reserved - Unknown"));
|
|
proto_item_append_text(ti, " (%s)", val_to_str(label, special_labels,
|
|
"Reserved - Unknown"));
|
|
} else {
|
|
proto_tree_add_uint_format(tlv_ilso, hf_mpls_echo_tlv_ilso_label,
|
|
tvb, offset, 3, label, "Label: %u", label);
|
|
}
|
|
proto_item_append_text(ti, ", Exp: %u, BOS: %u, TTL: %u",
|
|
exp, bos, ttl);
|
|
proto_tree_add_uint_format(tlv_ilso, hf_mpls_echo_tlv_ilso_exp,
|
|
tvb, offset + 2, 1, exp, "Exp: %u", exp);
|
|
proto_tree_add_uint_format(tlv_ilso, hf_mpls_echo_tlv_ilso_bos,
|
|
tvb, offset + 2, 1, bos, "BOS: %u", bos);
|
|
proto_tree_add_item(tlv_ilso, hf_mpls_echo_tlv_ilso_ttl,
|
|
tvb, offset + 3, 1, FALSE);
|
|
rem -= 4;
|
|
offset += 4;
|
|
index++;
|
|
}
|
|
}
|
|
|
|
static int
|
|
dissect_mpls_echo_tlv(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem, gboolean in_errored);
|
|
|
|
/*
|
|
* Dissector for Errored TLVs
|
|
*/
|
|
static void
|
|
dissect_mpls_echo_tlv_errored(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem)
|
|
{
|
|
int errored_tlv_length;
|
|
|
|
while(rem >= 4){
|
|
errored_tlv_length = dissect_mpls_echo_tlv(tvb, offset, tree, rem, TRUE);
|
|
rem -= errored_tlv_length;
|
|
offset += errored_tlv_length;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dissector for MPLS Echo TLVs and return bytes consumed
|
|
*/
|
|
static int
|
|
dissect_mpls_echo_tlv(tvbuff_t *tvb, guint offset, proto_tree *tree, int rem, gboolean in_errored)
|
|
{
|
|
guint16 type, saved_type;
|
|
int length;
|
|
proto_tree *ti = NULL, *mpls_echo_tlv_tree = NULL;
|
|
|
|
length = tvb_reported_length_remaining(tvb, offset);
|
|
rem = MIN(rem, length);
|
|
|
|
if( rem < 4 ) { /* Type Length */
|
|
if(tree)
|
|
proto_tree_add_text(tree, tvb, offset, rem,
|
|
"Error processing TLV: length is %d, should be >= 4",
|
|
rem);
|
|
return rem;
|
|
}
|
|
type = tvb_get_ntohs(tvb, offset);
|
|
length = tvb_get_ntohs(tvb, offset + 2),
|
|
rem -= 4; /* do not count Type Length */
|
|
length = MIN(length, rem);
|
|
|
|
if (tree) {
|
|
/* Check for Vendor Private TLVs */
|
|
saved_type = type;
|
|
if(type >= TLV_VENDOR_PRIVATE_START) /* && <= TLV_VENDOR_PRIVATE_END always true */
|
|
type = TLV_VENDOR_PRIVATE_START;
|
|
|
|
ti = proto_tree_add_text(tree, tvb, offset, length + 4, "%s%s",
|
|
in_errored ? "Errored TLV Type: " : "",
|
|
val_to_str(type, mpls_echo_tlv_type_names, "Unknown TLV type (0x%04X)"));
|
|
mpls_echo_tlv_tree = proto_item_add_subtree(ti, ett_mpls_echo_tlv);
|
|
if(mpls_echo_tlv_tree == NULL) return length+4;
|
|
|
|
/* MPLS Echo TLV Type and Length */
|
|
if (in_errored){
|
|
proto_tree_add_uint_format(mpls_echo_tlv_tree, hf_mpls_echo_tlv_errored_type, tvb,
|
|
offset, 2, saved_type, "Errored TLV Type: %s (%u)",
|
|
val_to_str(type, mpls_echo_tlv_type_names, "Unknown TLV type"), saved_type);
|
|
} else {
|
|
proto_tree_add_uint_format(mpls_echo_tlv_tree, hf_mpls_echo_tlv_type, tvb,
|
|
offset, 2, saved_type, "Type: %s (%u)",
|
|
val_to_str(type, mpls_echo_tlv_type_names, "Unknown TLV type"), saved_type);
|
|
}
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_len, tvb, offset + 2, 2, FALSE);
|
|
|
|
/* MPLS Echo TLV Value */
|
|
if (length == 0)
|
|
return 4; /* Empty TLV, return Type and Length consumed. */
|
|
|
|
switch (type) {
|
|
case TLV_TARGET_FEC_STACK:
|
|
dissect_mpls_echo_tlv_fec(tvb, offset + 4, mpls_echo_tlv_tree, length);
|
|
break;
|
|
case TLV_PAD:
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_padaction, tvb,
|
|
offset + 4, 1, FALSE);
|
|
if (length > 1)
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_padding, tvb,
|
|
offset + 5, length - 1, FALSE);
|
|
break;
|
|
case TLV_VENDOR_CODE:
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_vendor, tvb,
|
|
offset + 4, 4, FALSE);
|
|
break;
|
|
case TLV_ILSO_IPv4:
|
|
if(length < 8) {
|
|
proto_tree_add_text(mpls_echo_tlv_tree, tvb, offset + 4, length,
|
|
"Error processing TLV: length is %d, should be >= 8",
|
|
length);
|
|
break;
|
|
}
|
|
dissect_mpls_echo_tlv_ilso(tvb, offset + 4, mpls_echo_tlv_tree, length, FALSE);
|
|
break;
|
|
case TLV_ILSO_IPv6:
|
|
if(length < 32) {
|
|
proto_tree_add_text(mpls_echo_tlv_tree, tvb, offset + 4, length,
|
|
"Error processing TLV: length is %d, should be >= 32",
|
|
length);
|
|
break;
|
|
}
|
|
dissect_mpls_echo_tlv_ilso(tvb, offset + 4, mpls_echo_tlv_tree, length, TRUE);
|
|
break;
|
|
case TLV_RTO_IPv4:
|
|
if(length != 4) {
|
|
proto_tree_add_text(mpls_echo_tlv_tree, tvb, offset + 4, length,
|
|
"Error processing TLV: length is %d, should be 4",
|
|
length);
|
|
break;
|
|
}
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_rto_ipv4,
|
|
tvb, offset + 4, 4, FALSE);
|
|
break;
|
|
case TLV_RTO_IPv6:
|
|
if(length != 16) {
|
|
proto_tree_add_text(mpls_echo_tlv_tree, tvb, offset + 4, length,
|
|
"Error processing TLV: length is %d, should be 16",
|
|
length);
|
|
break;
|
|
}
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_rto_ipv6,
|
|
tvb, offset + 4, 16, FALSE);
|
|
break;
|
|
case TLV_VENDOR_PRIVATE_START:
|
|
if (length < 4) { /* SMI Enterprise code */
|
|
proto_tree_add_text(mpls_echo_tlv_tree, tvb, offset + 4, length,
|
|
"Error processing Vendor Private TLV: length is %d, should be >= 4",
|
|
length);
|
|
} else {
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_vendor, tvb,
|
|
offset + 4, 4, FALSE);
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_value, tvb,
|
|
offset + 8, length - 4, FALSE);
|
|
}
|
|
break;
|
|
case TLV_DOWNSTREAM_MAPPING:
|
|
if(length < 16) {
|
|
proto_tree_add_text(mpls_echo_tlv_tree, tvb, offset + 4, length,
|
|
"Error processing TLV: length is %d, should be >= 16",
|
|
length);
|
|
break;
|
|
}
|
|
dissect_mpls_echo_tlv_ds_map(tvb, offset + 4, mpls_echo_tlv_tree, length);
|
|
break;
|
|
case TLV_ERRORED_TLV:
|
|
if (in_errored)
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_value, tvb,
|
|
offset + 4, length, FALSE);
|
|
else
|
|
dissect_mpls_echo_tlv_errored(tvb, offset + 4, mpls_echo_tlv_tree, length);
|
|
break;
|
|
case TLV_REPLY_TOS:
|
|
if(length != 4) {
|
|
proto_tree_add_text(mpls_echo_tlv_tree, tvb, offset + 4, length,
|
|
"Error processing TLV: length is %d, should be 4",
|
|
length);
|
|
break;
|
|
}
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_reply_tos, tvb,
|
|
offset + 4, 1, FALSE);
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_reply_tos_mbz, tvb,
|
|
offset + 5, 3, FALSE);
|
|
break;
|
|
case TLV_ERROR_CODE:
|
|
default:
|
|
proto_tree_add_item(mpls_echo_tlv_tree, hf_mpls_echo_tlv_value, tvb,
|
|
offset + 4, length, FALSE);
|
|
break;
|
|
}
|
|
}
|
|
return length + 4; /* Length of the Value field + Type Length */
|
|
}
|
|
|
|
#define MSGTYPE_MPLS_ECHO(msgtype) ((msgtype == 1) || (msgtype == 2))
|
|
#define MSGTYPE_DATAPLANE(msgtype) ((msgtype == 3) || (msgtype == 4))
|
|
|
|
/*
|
|
* Dissector for MPLS Echo (LSP PING) packets
|
|
*/
|
|
static void
|
|
dissect_mpls_echo(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
int offset = 0, rem = 0, len;
|
|
proto_item *ti = NULL;
|
|
proto_tree *mpls_echo_tree = NULL, *mpls_echo_gflags = NULL;
|
|
guint8 msgtype;
|
|
const guint8 *ts_sent, *ts_rec;
|
|
|
|
/* If version != 1 we assume it's not an mpls ping packet */
|
|
if (tvb_length(tvb) < 5) {
|
|
return; /* Not enough information to tell version and message type. */
|
|
}
|
|
if (tvb_get_ntohs(tvb, 0) != 1) {
|
|
return; /* Not version 1. */
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "MPLS ECHO");
|
|
|
|
rem = tvb_reported_length_remaining(tvb, offset);
|
|
|
|
/* Get the message type and fill in the Column info */
|
|
msgtype = tvb_get_guint8(tvb, offset + 4);
|
|
|
|
/* The minimum fixed part of the packet is 16 Bytes or 32 Bytes depending on Msg Type */
|
|
if( ((!MSGTYPE_MPLS_ECHO(msgtype)) && (rem < 16)) ||
|
|
((MSGTYPE_MPLS_ECHO(msgtype)) && (rem < 32)) ) {
|
|
if( check_col(pinfo->cinfo, COL_INFO) )
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Malformed Message");
|
|
if(tree) {
|
|
ti = proto_tree_add_item(tree, proto_mpls_echo, tvb, 0, -1, FALSE);
|
|
mpls_echo_tree = proto_item_add_subtree(ti, ett_mpls_echo);
|
|
proto_tree_add_text(mpls_echo_tree, tvb, offset, rem,
|
|
"Error processing Message: length is %d, should be >= %u",
|
|
rem, (MSGTYPE_MPLS_ECHO(msgtype)) ? 32 : 16);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_add_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str(msgtype, mpls_echo_msgtype, "Unknown Message Type (0x%02X)"));
|
|
|
|
|
|
if (tree) {
|
|
|
|
/* Add subtree and dissect the fixed part of the message */
|
|
ti = proto_tree_add_item(tree, proto_mpls_echo, tvb, 0, -1, FALSE);
|
|
mpls_echo_tree = proto_item_add_subtree(ti, ett_mpls_echo);
|
|
|
|
proto_tree_add_item(mpls_echo_tree,
|
|
hf_mpls_echo_version, tvb, offset, 2, FALSE);
|
|
|
|
if(MSGTYPE_MPLS_ECHO(msgtype)){
|
|
ti = proto_tree_add_item(mpls_echo_tree,
|
|
hf_mpls_echo_gflags, tvb, offset + 2, 2, FALSE);
|
|
mpls_echo_gflags = proto_item_add_subtree(ti, ett_mpls_echo_gflags);
|
|
proto_tree_add_item(mpls_echo_gflags,
|
|
hf_mpls_echo_flag_sbz, tvb, offset + 2, 2, FALSE);
|
|
proto_tree_add_item(mpls_echo_gflags,
|
|
hf_mpls_echo_flag_v, tvb, offset + 2, 2, FALSE);
|
|
} else {
|
|
proto_tree_add_item(mpls_echo_tree,
|
|
hf_mpls_echo_mbz, tvb, offset + 2, 2, FALSE);
|
|
}
|
|
|
|
proto_tree_add_item(mpls_echo_tree,
|
|
hf_mpls_echo_msgtype, tvb, offset + 4, 1, FALSE);
|
|
proto_tree_add_item(mpls_echo_tree,
|
|
hf_mpls_echo_replymode, tvb, offset + 5, 1, FALSE);
|
|
proto_tree_add_item(mpls_echo_tree,
|
|
hf_mpls_echo_returncode, tvb, offset + 6, 1, FALSE);
|
|
proto_tree_add_item(mpls_echo_tree,
|
|
hf_mpls_echo_returnsubcode, tvb, offset + 7, 1, FALSE);
|
|
proto_tree_add_item(mpls_echo_tree,
|
|
hf_mpls_echo_handle, tvb, offset + 8, 4, FALSE);
|
|
proto_tree_add_item(mpls_echo_tree,
|
|
hf_mpls_echo_sequence, tvb, offset + 12, 4, FALSE);
|
|
|
|
if(MSGTYPE_MPLS_ECHO(msgtype)){
|
|
/* Using NTP routine to calculate the timestamp */
|
|
ts_sent = tvb_get_ptr(tvb, 16, 8);
|
|
proto_tree_add_bytes_format(mpls_echo_tree, hf_mpls_echo_ts_sent, tvb,
|
|
offset + 16, 8, ts_sent, "Timestamp Sent: %s", ntp_fmt_ts(ts_sent));
|
|
ts_rec = tvb_get_ptr(tvb, 24, 8);
|
|
proto_tree_add_bytes_format(mpls_echo_tree, hf_mpls_echo_ts_rec, tvb,
|
|
offset + 24, 8, ts_rec, "Timestamp Received: %s", ntp_fmt_ts(ts_rec));
|
|
}
|
|
|
|
}
|
|
|
|
if(MSGTYPE_MPLS_ECHO(msgtype)){
|
|
offset += 32;
|
|
rem -= 32;
|
|
} else {
|
|
offset += 16;
|
|
rem -= 16;
|
|
}
|
|
|
|
/* Dissect all TLVs */
|
|
while(tvb_reported_length_remaining(tvb, offset) > 0 ) {
|
|
len = dissect_mpls_echo_tlv(tvb, offset, mpls_echo_tree, rem, FALSE);
|
|
offset += len;
|
|
rem -= len;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/* Register the protocol with Wireshark */
|
|
|
|
void
|
|
proto_register_mpls_echo(void)
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_mpls_echo_version,
|
|
{ "Version", "mpls_echo.version",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "MPLS ECHO Version Number", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_mbz,
|
|
{ "MBZ", "mpls_echo.mbz",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0, "MPLS ECHO Must be Zero", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_gflags,
|
|
{ "Global Flags", "mpls_echo.flags",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0, "MPLS ECHO Global Flags", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_flag_sbz,
|
|
{ "Reserved", "mpls_echo.flag_sbz",
|
|
FT_UINT16, BASE_HEX, NULL, 0xFFFE, "MPLS ECHO Reserved Flags", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_flag_v,
|
|
{ "Validate FEC Stack", "mpls_echo.flag_v",
|
|
FT_BOOLEAN, 16, NULL, 0x0001, "MPLS ECHO Validate FEC Stack Flag", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_msgtype,
|
|
{ "Message Type", "mpls_echo.msg_type",
|
|
FT_UINT8, BASE_DEC, VALS(mpls_echo_msgtype), 0x0, "MPLS ECHO Message Type", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_replymode,
|
|
{ "Reply Mode", "mpls_echo.reply_mode",
|
|
FT_UINT8, BASE_DEC, VALS(mpls_echo_replymode), 0x0, "MPLS ECHO Reply Mode", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_returncode,
|
|
{ "Return Code", "mpls_echo.return_code",
|
|
FT_UINT8, BASE_DEC, VALS(mpls_echo_returncode), 0x0, "MPLS ECHO Return Code", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_returnsubcode,
|
|
{ "Return Subcode", "mpls_echo.return_subcode",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO Return Subcode", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_handle,
|
|
{ "Sender's Handle", "mpls_echo.sender_handle",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0, "MPLS ECHO Sender's Handle", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_sequence,
|
|
{ "Sequence Number", "mpls_echo.sequence",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, "MPLS ECHO Sequence Number", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_ts_sent,
|
|
{ "Timestamp Sent", "mpls_echo.timestamp_sent",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, "MPLS ECHO Timestamp Sent", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_ts_rec,
|
|
{ "Timestamp Received", "mpls_echo.timestamp_rec",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, "MPLS ECHO Timestamp Received", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_type,
|
|
{ "Type", "mpls_echo.tlv.type",
|
|
FT_UINT16, BASE_DEC, VALS(mpls_echo_tlv_type_names), 0x0,
|
|
"MPLS ECHO TLV Type", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_len,
|
|
{ "Length", "mpls_echo.tlv.len",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Length", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_value,
|
|
{ "Value", "mpls_echo.tlv.value",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Value", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_type,
|
|
{ "Type", "mpls_echo.tlv.fec.type",
|
|
FT_UINT16, BASE_DEC, VALS(mpls_echo_tlv_fec_names), 0x0,
|
|
"MPLS ECHO TLV FEC Stack Type", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_len,
|
|
{ "Length", "mpls_echo.tlv.fec.len",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack Length", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_value,
|
|
{ "Value", "mpls_echo.tlv.fec.value",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack Value", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_ldp_ipv4,
|
|
{ "IPv4 Prefix", "mpls_echo.tlv.fec.ldp_ipv4",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack LDP IPv4", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_ldp_ipv4_mask,
|
|
{ "Prefix Length", "mpls_echo.tlv.fec.ldp_ipv4_mask",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack LDP IPv4 Prefix Length", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_ldp_ipv6,
|
|
{ "IPv6 Prefix", "mpls_echo.tlv.fec.ldp_ipv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack LDP IPv6", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_ldp_ipv6_mask,
|
|
{ "Prefix Length", "mpls_echo.tlv.fec.ldp_ipv6_mask",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack LDP IPv6 Prefix Length", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_rsvp_ipv4_ipv4_endpoint,
|
|
{ "IPv4 Tunnel endpoint address", "mpls_echo.tlv.fec.rsvp_ipv4_ep",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack RSVP IPv4 Tunnel Endpoint Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_rsvp_ipv6_ipv6_endpoint,
|
|
{ "IPv6 Tunnel endpoint address", "mpls_echo.tlv.fec.rsvp_ipv6_ep",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack RSVP IPv6 Tunnel Endpoint Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_rsvp_ip_mbz1,
|
|
{ "Must Be Zero", "mpls_echo.tlv.fec.rsvp_ip_mbz1",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack RSVP MBZ", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_rsvp_ip_tunnel_id,
|
|
{ "Tunnel ID", "mpls_echo.tlv.fec.rsvp_ip_tun_id",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack RSVP Tunnel ID", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_rsvp_ipv4_ext_tunnel_id,
|
|
{ "Extended Tunnel ID", "mpls_echo.tlv.fec.rsvp_ipv4_ext_tun_id",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0, "MPLS ECHO TLV FEC Stack RSVP IPv4 Extended Tunnel ID", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_rsvp_ipv4_ipv4_sender,
|
|
{ "IPv4 Tunnel sender address", "mpls_echo.tlv.fec.rsvp_ipv4_sender",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack RSVP IPv4 Sender", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_rsvp_ipv6_ext_tunnel_id,
|
|
{ "Extended Tunnel ID", "mpls_echo.tlv.fec.rsvp_ipv6_ext_tun_id",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0, "MPLS ECHO TLV FEC Stack RSVP IPv6 Extended Tunnel ID", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_rsvp_ipv6_ipv6_sender,
|
|
{ "IPv6 Tunnel sender address", "mpls_echo.tlv.fec.rsvp_ipv6_sender",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack RSVP IPv4 Sender", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_rsvp_ip_mbz2,
|
|
{ "Must Be Zero", "mpls_echo.tlv.fec.rsvp_ip_mbz2",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack RSVP MBZ", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_rsvp_ip_lsp_id,
|
|
{ "LSP ID", "mpls_echo.tlv.fec.rsvp_ip_lsp_id",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack RSVP LSP ID", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_l2cid_sender,
|
|
{ "Sender's PE Address", "mpls_echo.tlv.fec.l2cid_sender",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack L2CID Sender", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_l2cid_remote,
|
|
{ "Remote PE Address", "mpls_echo.tlv.fec.l2cid_remote",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack L2CID Remote", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_l2cid_vcid,
|
|
{ "VC ID", "mpls_echo.tlv.fec.l2cid_vcid",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack L2CID VCID", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_l2cid_encap,
|
|
{ "Encapsulation", "mpls_echo.tlv.fec.l2cid_encap",
|
|
FT_UINT16, BASE_DEC, VALS(fec_vc_types_vals), 0x0, "MPLS ECHO TLV FEC Stack L2CID Encapsulation", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_l2cid_mbz,
|
|
{ "MBZ", "mpls_echo.tlv.fec.l2cid_mbz",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0, "MPLS ECHO TLV FEC Stack L2CID MBZ", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_bgp_nh,
|
|
{ "BGP Next Hop", "mpls_echo.tlv.fec.bgp_nh",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack BGP Next Hop", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_bgp_ipv4,
|
|
{ "IPv4 Prefix", "mpls_echo.tlv.fec.bgp_ipv4",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack BGP IPv4", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_bgp_len,
|
|
{ "Prefix Length", "mpls_echo.tlv.fec.bgp_len",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack BGP Prefix Length", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_gen_ipv4,
|
|
{ "IPv4 Prefix", "mpls_echo.tlv.fec.gen_ipv4",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack Generic IPv4", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_gen_ipv4_mask,
|
|
{ "Prefix Length", "mpls_echo.tlv.fec.gen_ipv4_mask",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack Generic IPv4 Prefix Length", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_gen_ipv6,
|
|
{ "IPv6 Prefix", "mpls_echo.tlv.fec.gen_ipv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV FEC Stack Generic IPv6", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_gen_ipv6_mask,
|
|
{ "Prefix Length", "mpls_echo.tlv.fec.gen_ipv6_mask",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV FEC Stack Generic IPv6 Prefix Length", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_fec_nil_label,
|
|
{ "Label", "mpls_echo.tlv.fec.nil_label",
|
|
FT_UINT24, BASE_DEC, VALS(special_labels), 0x0, "MPLS ECHO TLV FEC Stack NIL Label", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_mtu,
|
|
{ "MTU", "mpls_echo.tlv.ds_map.mtu",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Downstream Map MTU", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_addr_type,
|
|
{ "Address Type", "mpls_echo.tlv.ds_map.addr_type",
|
|
FT_UINT8, BASE_DEC, VALS(mpls_echo_tlv_ds_map_addr_type), 0x0,
|
|
"MPLS ECHO TLV Downstream Map Address Type", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_res,
|
|
{ "DS Flags", "mpls_echo.tlv.ds_map.res",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, "MPLS ECHO TLV Downstream Map DS Flags", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_flag_res,
|
|
{ "MBZ", "mpls_echo.tlv.ds_map.flag_res",
|
|
FT_UINT8, BASE_HEX, NULL, 0xFC, "MPLS ECHO TLV Downstream Map Reserved Flags", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_flag_i,
|
|
{ "Interface and Label Stack Request", "mpls_echo.tlv.ds_map.flag_i",
|
|
FT_BOOLEAN, 8, NULL, 0x02, "MPLS ECHO TLV Downstream Map I-Flag", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_flag_n,
|
|
{ "Treat as Non-IP Packet", "mpls_echo.tlv.ds_map.flag_n",
|
|
FT_BOOLEAN, 8, NULL, 0x01, "MPLS ECHO TLV Downstream Map N-Flag", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_ds_ip,
|
|
{ "Downstream IP Address", "mpls_echo.tlv.ds_map.ds_ip",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Downstream Map IP Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_int_ip,
|
|
{ "Downstream Interface Address", "mpls_echo.tlv.ds_map.int_ip",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Downstream Map Interface Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_if_index,
|
|
{ "Upstream Interface Index", "mpls_echo.tlv.ds_map.if_index",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Downstream Map Interface Index", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_ds_ipv6,
|
|
{ "Downstream IPv6 Address", "mpls_echo.tlv.ds_map.ds_ipv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Downstream Map IPv6 Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_int_ipv6,
|
|
{ "Downstream Interface IPv6 Address", "mpls_echo.tlv.ds_map.int_ipv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Downstream Map Interface IPv6 Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_hash_type,
|
|
{ "Multipath Type", "mpls_echo.tlv.ds_map.hash_type",
|
|
FT_UINT8, BASE_DEC, VALS(mpls_echo_tlv_ds_map_hash_type), 0x0,
|
|
"MPLS ECHO TLV Downstream Map Multipath Type", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_depth,
|
|
{ "Depth Limit", "mpls_echo.tlv.ds_map.depth",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Downstream Map Depth Limit", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_muti_len,
|
|
{ "Multipath Length", "mpls_echo.tlv.ds_map.multi_len",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Downstream Map Multipath Length", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_mp_ip,
|
|
{ "IP Address", "mpls_echo.tlv.ds_map_mp.ip",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Downstream Map Multipath IP Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_mp_mask,
|
|
{ "Mask", "mpls_echo.tlv.ds_map_mp.mask",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0, "MPLS ECHO TLV Downstream Map Multipath Mask", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_mp_ip_low,
|
|
{ "IP Address Low", "mpls_echo.tlv.ds_map_mp.ip_low",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Downstream Map Multipath Low IP Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_mp_ip_high,
|
|
{ "IP Address High", "mpls_echo.tlv.ds_map_mp.ip_high",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Downstream Map Multipath High IP Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_mp_value,
|
|
{ "Multipath Value", "mpls_echo.tlv.ds_map_mp.value",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Multipath Value", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_mp_label,
|
|
{ "Downstream Label", "mpls_echo.tlv.ds_map.mp_label",
|
|
FT_UINT24, BASE_DEC, VALS(special_labels), 0x0, "MPLS ECHO TLV Downstream Map Downstream Label", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_mp_exp,
|
|
{ "Downstream Experimental", "mpls_echo.tlv.ds_map.mp_exp",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Downstream Map Downstream Experimental", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_mp_bos,
|
|
{ "Downstream BOS", "mpls_echo.tlv.ds_map.mp_bos",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Downstream Map Downstream BOS", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ds_map_mp_proto,
|
|
{ "Downstream Protocol", "mpls_echo.tlv.ds_map.mp_proto",
|
|
FT_UINT8, BASE_DEC, VALS(mpls_echo_tlv_ds_map_mp_proto), 0x0,
|
|
"MPLS ECHO TLV Downstream Map Downstream Protocol", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_padaction,
|
|
{ "Pad Action", "mpls_echo.tlv.pad_action",
|
|
FT_UINT8, BASE_DEC, VALS(mpls_echo_tlv_pad), 0x0, "MPLS ECHO Pad TLV Action", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_padding,
|
|
{ "Padding", "mpls_echo.tlv.pad_padding",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, "MPLS ECHO Pad TLV Padding", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_vendor,
|
|
{ "Vendor Id", "mpls_echo.tlv.vendor_id",
|
|
FT_UINT32, BASE_DEC, VALS(sminmpec_values), 0x0, "MPLS ECHO Vendor Id", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ilso_ipv4_addr,
|
|
{ "Downstream IPv4 Address", "mpls_echo.tlv.ilso_ipv4.addr",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Interface and Label Stack Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ilso_ipv4_int_addr,
|
|
{ "Downstream Interface Address", "mpls_echo.tlv.ilso_ipv4.int_addr",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Interface and Label Stack Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ilso_ipv6_addr,
|
|
{ "Downstream IPv6 Address", "mpls_echo.tlv.ilso_ipv6.addr",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Interface and Label Stack Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ilso_ipv6_int_addr,
|
|
{ "Downstream Interface Address", "mpls_echo.tlv.ilso_ipv6.int_addr",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV Interface and Label Stack Address", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ilso_label,
|
|
{ "Label", "mpls_echo.tlv.ilso_ipv4.label",
|
|
FT_UINT24, BASE_DEC, VALS(special_labels), 0x0, "MPLS ECHO TLV Interface and Label Stack Label", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ilso_exp,
|
|
{ "Exp", "mpls_echo.tlv.ilso_ipv4.exp",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Interface and Label Stack Exp", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ilso_bos,
|
|
{ "BOS", "mpls_echo.tlv.ilso_ipv4.bos",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Interface and Label Stack BOS", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_ilso_ttl,
|
|
{ "TTL", "mpls_echo.tlv.ilso_ipv4.ttl",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Interface and Label Stack TTL", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_rto_ipv4,
|
|
{ "Reply-to IPv4 Address", "mpls_echo.tlv.rto.ipv4",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV IPv4 Reply-To Object", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_rto_ipv6,
|
|
{ "Reply-to IPv6 Address", "mpls_echo.tlv.rto.ipv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, "MPLS ECHO TLV IPv6 Reply-To Object", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_reply_tos,
|
|
{ "Reply-TOS Byte", "mpls_echo.tlv.reply.tos",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "MPLS ECHO TLV Reply-TOS Byte", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_reply_tos_mbz,
|
|
{ "MBZ", "mpls_echo.tlv.reply.tos.mbz",
|
|
FT_UINT24, BASE_HEX, NULL, 0x0, "MPLS ECHO TLV Reply-TOS MBZ", HFILL}
|
|
},
|
|
{ &hf_mpls_echo_tlv_errored_type,
|
|
{ "Errored TLV Type", "mpls_echo.tlv.errored.type",
|
|
FT_UINT16, BASE_DEC, VALS(mpls_echo_tlv_type_names), 0x0,
|
|
"MPLS ECHO TLV Errored TLV Type", HFILL}
|
|
}
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_mpls_echo,
|
|
&ett_mpls_echo_gflags,
|
|
&ett_mpls_echo_tlv,
|
|
&ett_mpls_echo_tlv_fec,
|
|
&ett_mpls_echo_tlv_ds_map,
|
|
&ett_mpls_echo_tlv_ilso,
|
|
};
|
|
|
|
module_t *mpls_echo_module;
|
|
|
|
proto_mpls_echo = proto_register_protocol("Multiprotocol Label Switching Echo",
|
|
"MPLS Echo", "mpls-echo");
|
|
|
|
proto_register_field_array(proto_mpls_echo, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
mpls_echo_module = prefs_register_protocol(proto_mpls_echo, proto_reg_handoff_mpls_echo);
|
|
prefs_register_uint_preference(mpls_echo_module, "udp.port", "MPLS Echo UDP Port",
|
|
"Set the UDP port for messages (if other"
|
|
" than the default of 3503)",
|
|
10, &global_mpls_echo_udp_port);
|
|
}
|
|
|
|
|
|
void
|
|
proto_reg_handoff_mpls_echo(void)
|
|
{
|
|
static gboolean mpls_echo_prefs_initialized = FALSE;
|
|
static dissector_handle_t mpls_echo_handle;
|
|
|
|
if(!mpls_echo_prefs_initialized) {
|
|
mpls_echo_handle = create_dissector_handle(dissect_mpls_echo,
|
|
proto_mpls_echo);
|
|
mpls_echo_prefs_initialized = TRUE;
|
|
} else {
|
|
dissector_delete("udp.port", mpls_echo_udp_port, mpls_echo_handle);
|
|
}
|
|
|
|
mpls_echo_udp_port = global_mpls_echo_udp_port;
|
|
dissector_add("udp.port", global_mpls_echo_udp_port, mpls_echo_handle);
|
|
}
|