78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/* packet-rohc.h
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* Routines for RObust Header Compression (ROHC) dissection.
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*
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* Copyright 2011, Anders Broman <anders.broman[at]ericsson.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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* Ref:
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* http://www.ietf.org/rfc/rfc3095.txt RObust Header Compression (ROHC): Framework and four profiles: RTP, UDP, ESP, and uncompressed
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* http://datatracker.ietf.org/doc/rfc4815/ RObust Header Compression (ROHC): Corrections and Clarifications to RFC 3095
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* http://datatracker.ietf.org/doc/rfc5225/ RObust Header Compression Version 2 (ROHCv2): Profiles for RTP, UDP, IP, ESP and UDP-Lite
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*/
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#ifndef PACKET_ROHC_H
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#define PACKET_ROHC_H
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#define MAX_CID 15
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enum rohc_mode
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{
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MODE_NOT_SET = 0,
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UNIDIRECTIONAL = 1,
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OPTIMISTIC_BIDIRECTIONAL = 2,
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RELIABLE_BIDIRECTIONAL = 3
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};
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enum rohc_d_mode
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{
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NO_CONTEXT = 1,
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STATIC_CONTEXT = 2,
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FULL_CONTEXT = 3
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};
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typedef struct rohc_info
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{
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gboolean rohc_compression;
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guint16 rohc_ip_version;
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gboolean cid_inclusion_info;
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gboolean large_cid_present;
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enum rohc_mode mode;
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gboolean rnd;
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gboolean udp_checksum_present;
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guint16 profile;
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proto_item *last_created_item;
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} rohc_info;
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typedef struct rohc_context
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{
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guint16 rohc_ip_version[MAX_CID+1];
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gboolean large_cid_present[MAX_CID+1];
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enum rohc_mode mode[MAX_CID+1];
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enum rohc_d_mode d_mode[MAX_CID+1];
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gboolean rnd[MAX_CID+1];
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gboolean udp_checkum_present[MAX_CID+1];
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guint16 profile[MAX_CID+1];
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gboolean rohc_context_init[MAX_CID+1];
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gint ir_frame_number[MAX_CID+1]; /* The frame number of the last IR packet seen */
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} rohc_context;
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#endif /* PACKET_ROHC_H */
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