forked from osmocom/wireshark
71 lines
2.6 KiB
C
71 lines
2.6 KiB
C
/* packet-mpls.h
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* Declarations of exported routines from MPLS dissector
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* Author: Carlos Pignataro <cpignata@cisco.com>
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* Copyright 2005, cisco Systems, Inc.
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*
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* (c) Copyright 2006, _FF_ Francesco Fondelli <francesco.fondelli@gmail.com>
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* added MPLS OAM support, ITU-T Y.1711
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* (c) Copyright 2011, Shobhank Sharma <ssharma5@ncsu.edu>
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* added MPLS Generic Associated Channel as per RFC 5586
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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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#ifndef PACKET_MPLS_H
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#define PACKET_MPLS_H
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/* Special labels in MPLS */
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enum {
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MPLS_LABEL_IP4_EXPLICIT_NULL = 0,
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MPLS_LABEL_ROUTER_ALERT,
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MPLS_LABEL_IP6_EXPLICIT_NULL,
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MPLS_LABEL_IMPLICIT_NULL,
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MPLS_LABEL_GACH = 13, /* aka GAL */
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MPLS_LABEL_OAM_ALERT = 14,
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MPLS_LABEL_MAX_RESERVED = 15,
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MPLS_LABEL_INVALID = -1
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};
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/* As per RFC 6428 http://tools.ietf.org/html/rfc6428, Section: 3.3 */
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#define ACH_TYPE_BFD_CC 0x0022
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#define ACH_TYPE_BFD_CV 0x0023
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/* As RFC 6426:http://tools.ietf.org/html/rfc6426, Section: 7.4 */
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#define ACH_TYPE_ONDEMAND_CV 0x0025
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/*
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* FF: private data passed from the MPLS dissector to subdissectors
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* (data parameter).
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*/
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struct mplsinfo {
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guint32 label; /* last mpls label in label stack */
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guint8 exp; /* former EXP bits of last mpls shim in stack */
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guint8 bos; /* BOS bit of last mpls shim in stack */
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guint8 ttl; /* TTL bits of last mpls shim in stack */
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};
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extern const value_string special_labels[];
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extern void decode_mpls_label(tvbuff_t *tvb, int offset,
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guint32 *label, guint8 *exp,
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guint8 *bos, guint8 *ttl);
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extern gboolean dissect_try_cw_first_nibble(tvbuff_t *tvb, packet_info *pinfo,
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proto_tree *tree );
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#endif
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