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