ee6519bca6
Instead of registering subdissectors to arbitrary Wireshark assigned numbers, register them to the actual pseudowire type number assigned by IANA and present in the Pseudowire Type AVP. Half of the previously registered types were never used, because the dissector table could not be called with their Wireshark internal number. This makes it easier to add dissectors to support currently unsupported but assigned types, and also makes it more intuitive to use Decode As when the PW Type AVP is not present. Previously, the dissector for the "default" type of CHDLC had to be changed to a different subdissector.
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/* packet-l2tp.h
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* Routines for Layer Two Tunnelling Protocol (L2TP) packet disassembly
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __PACKET_L2TP_H__
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#define __PACKET_L2TP_H__
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typedef struct _l2tp_cntrl_data {
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guint32 ccid;
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int msg_type;
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} l2tp_cntrl_data_t;
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/* L2TPv3 Pseudowire Types
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* https://www.iana.org/assignments/l2tp-parameters/l2tp-parameters.xhtml
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*/
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/* 0 is unassigned, use for Decode As of sessions where we do not have a
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* PW Type AVP. (Perhaps if no control packets are captured.) */
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#define L2TPv3_PW_DEFAULT 0x0000
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#define L2TPv3_PW_FR 0x0001
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#define L2TPv3_PW_AAL5 0x0002
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#define L2TPv3_PW_ATM_PORT 0x0003
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#define L2TPv3_PW_ETH_VLAN 0x0004
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#define L2TPv3_PW_ETH 0x0005
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#define L2TPv3_PW_CHDLC 0x0006
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#define L2TPv3_PW_PPP 0x0007 /* Expired draft, unassigned */
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#define L2TPv3_PW_ATM_VCC 0x0009
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#define L2TPv3_PW_ATM_VPC 0x000A
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#define L2TPv3_PW_IP 0x000B /* Expired draft, unassigned */
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#define L2TPv3_PW_DOCSIS_DMPT 0x000C /* MPEG2-TS */
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#define L2TPv3_PW_DOCSIS_PSP 0x000D
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#define L2TPv3_PW_E1 0x0011
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#define L2TPv3_PW_T1 0x0012
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#define L2TPv3_PW_E3 0x0013
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#define L2TPv3_PW_T3 0x0014
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#define L2TPv3_PW_CESOPSN 0x0015
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#define L2TPv3_PW_CESOPSN_CAS 0x0017
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#if 0
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/* Other dissectors that do not have Pseudowire Types assigned.
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* Were any of the unassigned numbers used for these in the past,
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* as with PPP and IP?
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*/
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#define L2TPv3_PW_MPLS
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#define L2TPv3_PW_LAPD
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#define L2TPv3_PW_ERICSSON
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#endif
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#endif /* __PACKET_L2TP_H__ */
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