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/* packet-rmt-lct.h
* Reliable Multicast Transport (RMT)
* LCT Building Block function definitions
* Copyright 2005, Stefano Pettini <spettini@users.sourceforge.net>
*
* $Id$
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __PACKET_RMT_LCT__
#define __PACKET_RMT_LCT__
#include "packet-rmt-common.h"
#include "packet-rmt-fec.h"
/* Type definitions */
/* ================ */
/* Logical LCT header representation */
struct _lct
{
guint8 version;
guint8 cci_size;
guint8 tsi_size;
guint8 toi_size;
gboolean tsi_present;
gboolean toi_present;
gboolean sct_present;
gboolean ert_present;
gboolean close_session;
gboolean close_object;
guint16 hlen;
guint8 codepoint;
guint8 *cci;
guint64 tsi;
guint64 toi;
const guint8 *toi_extended;
nstime_t sct;
nstime_t ert;
GArray *ext;
};
/* Wireshark stuff */
/* ============== */
/* LCT header field definitions */
struct _lct_hf
{
int header;
int version;
int fsize_header;
int fsize_cci;
int fsize_tsi;
int fsize_toi;
int flags_header;
int flags_sct_present;
int flags_ert_present;
int flags_close_session;
int flags_close_object;
int hlen;
int codepoint;
int cci;
int tsi;
int toi;
int toi_extended;
int sct;
int ert;
int ext;
};
/* LCT subtrees */
struct _lct_ett
{
gint main;
gint fsize;
gint flags;
gint ext;
gint ext_ext;
};
/* LCT preferences */
#define LCT_PREFS_EXT_192_NONE 0
#define LCT_PREFS_EXT_192_FLUTE 1
#define LCT_PREFS_EXT_193_NONE 0
#define LCT_PREFS_EXT_193_FLUTE 1
struct _lct_prefs
{
gboolean codepoint_as_fec_encoding;
gint ext_192;
gint ext_193;
};
/* LCT pointers */
struct _lct_ptr
{
struct _lct *lct;
struct _lct_hf *hf;
struct _lct_ett *ett;
struct _lct_prefs *prefs;
};
/* Macros to generate static arrays */
#define LCT_FIELD_ARRAY(base_structure, base_protocol) \
{ &base_structure.header, \
{ "Layered Coding Transport (LCT) header", base_protocol ".lct", FT_NONE, BASE_NONE, NULL, 0x0, "", HFILL }}, \
{ &base_structure.version, \
{ "Version", base_protocol ".lct.version", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, \
{ &base_structure.fsize_header, \
{ "Field sizes (bytes)", base_protocol ".lct.fsize", FT_NONE, BASE_NONE, NULL, 0x0, "", HFILL }}, \
{ &base_structure.fsize_cci, \
{ "Congestion Control Information field size", base_protocol ".lct.fsize.cci", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, \
{ &base_structure.fsize_tsi, \
{ "Transport Session Identifier field size", base_protocol ".lct.fsize.tsi", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, \
{ &base_structure.fsize_toi, \
{ "Transport Object Identifier field size", base_protocol ".lct.fsize.toi", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, \
{ &base_structure.flags_header, \
{ "Flags", base_protocol ".lct.flags", FT_NONE, BASE_NONE, NULL, 0x0, "", HFILL }}, \
{ &base_structure.flags_sct_present, \
{ "Sender Current Time present flag", base_protocol ".lct.flags.sct_present", FT_BOOLEAN, BASE_NONE, TFS(&boolean_set_notset), 0x0, "", HFILL }}, \
{ &base_structure.flags_ert_present, \
{ "Expected Residual Time present flag", base_protocol ".lct.flags.ert_present", FT_BOOLEAN, BASE_NONE, TFS(&boolean_set_notset), 0x0, "", HFILL }}, \
{ &base_structure.flags_close_session, \
{ "Close Session flag", base_protocol ".lct.flags.close_session", FT_BOOLEAN, BASE_NONE, TFS(&boolean_set_notset), 0x0, "", HFILL }}, \
{ &base_structure.flags_close_object, \
{ "Close Object flag", base_protocol ".lct.flags.close_object", FT_BOOLEAN, BASE_NONE, TFS(&boolean_set_notset), 0x0, "", HFILL }}, \
{ &base_structure.hlen, \
{ "Header length", base_protocol ".lct.hlen", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}, \
{ &base_structure.codepoint, \
{ "Codepoint", base_protocol ".lct.codepoint", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, \
{ &base_structure.cci, \
{ "Congestion Control Information", base_protocol ".lct.cci", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL }}, \
{ &base_structure.tsi, \
{ "Transport Session Identifier", base_protocol ".lct.tsi", FT_UINT64, BASE_DEC, NULL, 0x0, "", HFILL }}, \
{ &base_structure.toi, \
{ "Transport Object Identifier (up to 64 bites)", base_protocol ".lct.toi", FT_UINT64, BASE_DEC, NULL, 0x0, "", HFILL }}, \
{ &base_structure.toi_extended, \
{ "Transport Object Identifier (up to 112 bits)", base_protocol ".lct.toi_extended", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL }}, \
{ &base_structure.sct, \
{ "Sender Current Time", base_protocol ".lct.sct", FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0, "", HFILL }}, \
{ &base_structure.ert, \
{ "Expected Residual Time", base_protocol ".lct.ert", FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0, "", HFILL }}, \
{ &base_structure.ext, \
{ "Extension count", base_protocol ".lct.ext", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}
#define LCT_SUBTREE_ARRAY(base_structure) \
&base_structure.main, \
&base_structure.fsize, \
&base_structure.flags, \
&base_structure.ext, \
&base_structure.ext_ext
/* LCT exported functions */
/* ====================== */
void lct_info_column(struct _lct *lct, packet_info *pinfo);
void lct_dissector(struct _lct_ptr l, struct _fec_ptr f, tvbuff_t *tvb, proto_tree *tree, guint *offset);
void lct_dissector_free(struct _lct *lct);
void lct_prefs_set_default(struct _lct_prefs *prefs);
void lct_prefs_register(struct _lct_prefs *prefs, module_t *module);
void lct_ext_decode(struct _ext *e, struct _lct_prefs *prefs, tvbuff_t *tvb, proto_tree *tree, gint ett, struct _fec_ptr f);
#endif
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