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/* packet-rohc.h
* Routines for RObust Header Compression (ROHC) dissection.
*
* Copyright 2011, Anders Broman <anders.broman[at]ericsson.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Ref:
* http://www.ietf.org/rfc/rfc3095.txt RObust Header Compression (ROHC): Framework and four profiles: RTP, UDP, ESP, and uncompressed
* http://datatracker.ietf.org/doc/rfc4815/ RObust Header Compression (ROHC): Corrections and Clarifications to RFC 3095
* http://datatracker.ietf.org/doc/rfc5225/ RObust Header Compression Version 2 (ROHCv2): Profiles for RTP, UDP, IP, ESP and UDP-Lite
*/
#ifndef PACKET_ROHC_H
#define PACKET_ROHC_H
#define MAX_CID 15
enum rohc_mode
{
MODE_NOT_SET = 0,
UNIDIRECTIONAL = 1,
OPTIMISTIC_BIDIRECTIONAL = 2,
RELIABLE_BIDIRECTIONAL = 3
};
enum rohc_d_mode
{
NO_CONTEXT = 1,
STATIC_CONTEXT = 2,
FULL_CONTEXT = 3
};
typedef struct rohc_info
{
gboolean rohc_compression;
guint16 rohc_ip_version;
gboolean cid_inclusion_info;
gboolean large_cid_present;
enum rohc_mode mode;
gboolean rnd;
gboolean udp_checksum_present;
guint16 profile;
proto_item *last_created_item;
} rohc_info;
typedef struct rohc_context
{
guint16 rohc_ip_version[MAX_CID+1];
gboolean large_cid_present[MAX_CID+1];
enum rohc_mode mode[MAX_CID+1];
enum rohc_d_mode d_mode[MAX_CID+1];
gboolean rnd[MAX_CID+1];
gboolean udp_checkum_present[MAX_CID+1];
guint16 profile[MAX_CID+1];
gboolean rohc_context_init[MAX_CID+1];
gint ir_frame_number[MAX_CID+1]; /* The frame number of the last IR packet seen */
} rohc_context;
#endif /* PACKET_ROHC_H */
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