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/* packet-mpls.h
* Declarations of exported routines from MPLS dissector
* Author: Carlos Pignataro <cpignata@cisco.com>
* Copyright 2005, cisco Systems, Inc.
*
* (c) Copyright 2006, _FF_ Francesco Fondelli <francesco.fondelli@gmail.com>
* added MPLS OAM support, ITU-T Y.1711
* (c) Copyright 2011, Shobhank Sharma <ssharma5@ncsu.edu>
* added MPLS Generic Associated Channel as per RFC 5586
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef PACKET_MPLS_H
#define PACKET_MPLS_H
/* Special labels in MPLS */
enum {
MPLS_LABEL_IP4_EXPLICIT_NULL = 0,
MPLS_LABEL_ROUTER_ALERT,
MPLS_LABEL_IP6_EXPLICIT_NULL,
MPLS_LABEL_IMPLICIT_NULL,
MPLS_LABEL_ELI = 7,
MPLS_LABEL_GACH = 13, /* aka GAL */
MPLS_LABEL_OAM_ALERT = 14,
MPLS_LABEL_MAX_RESERVED = 15,
MPLS_LABEL_INVALID = -1
};
/* As per RFC 5718 */
#define PW_ACH_TYPE_MCC 0x0001
/* As per RFC 5718 */
#define PW_ACH_TYPE_SCC 0x0002
/* As per RFC 5885 */
#define PW_ACH_TYPE_BFD 0x0007
/* As per RFC 6374 */
#define PW_ACH_TYPE_DLM 0x000A
#define PW_ACH_TYPE_ILM 0x000B
#define PW_ACH_TYPE_DM 0x000C
#define PW_ACH_TYPE_DLM_DM 0x000D
#define PW_ACH_TYPE_ILM_DM 0x000E
/* As per RFC 4385 clause 6 */
#define PW_ACH_TYPE_IPV4 0x0021
/* As per RFC 6428 Section 3.3 */
#define PW_ACH_TYPE_BFD_CC 0x0022
#define PW_ACH_TYPE_BFD_CV 0x0023
/* As per RFC 6378 */
#define PW_ACH_TYPE_PSC 0x0024
/* As per RFC 6426 Section 7.4 */
#define PW_ACH_TYPE_ONDEMAND_CV 0x0025
/* As per RFC 6478 */
#define PW_ACH_TYPE_PW_OAM 0x0027
/* As per RFC 7769 */
#define PW_ACH_TYPE_MAC 0x0028
/* As per RFC 4385 clause 6 */
#define PW_ACH_TYPE_IPV6 0x0057
/* As per RFC 6427 */
#define PW_ACH_TYPE_MPLSTP_FM 0x0058
/* As per RFC 6671 */
#define PW_ACH_TYPE_MPLSTP_OAM 0x8902
/* MPLS over UDP http://tools.ietf.org/html/draft-ietf-mpls-in-udp-11,
* udp destination port as defined in
* http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=6635
*/
#define UDP_PORT_MPLS_OVER_UDP 6635
/*
* FF: private data passed from the MPLS dissector to subdissectors
* (data parameter).
*/
struct mplsinfo {
guint32 label; /* last mpls label in label stack */
guint8 exp; /* former EXP bits of last mpls shim in stack */
guint8 bos; /* BOS bit of last mpls shim in stack */
guint8 ttl; /* TTL bits of last mpls shim in stack */
};
extern const value_string special_labels[];
extern void decode_mpls_label(tvbuff_t *tvb, int offset,
guint32 *label, guint8 *exp,
guint8 *bos, guint8 *ttl);
extern gboolean dissect_try_cw_first_nibble(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree );
#endif
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