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/* packet-dbcreq.c
* Routines for DOCSIS 3.0 Dynamic Bonding Change Request Message dissection.
* Copyright 2010, Guido Reismueller <g.reismueller[AT]avm.de>
*
* 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.
*/
#include "config.h"
#include <epan/packet.h>
void proto_register_docsis_dbcreq(void);
void proto_reg_handoff_docsis_dbcreq(void);
/* Initialize the protocol and registered fields */
static int proto_docsis_dbcreq = -1;
static int hf_docsis_dbcreq_tranid = -1;
static int hf_docsis_dbcreq_number_of_fragments = -1;
static int hf_docsis_dbcreq_fragment_sequence_number = -1;
static dissector_handle_t docsis_tlv_handle;
/* Initialize the subtree pointers */
static gint ett_docsis_dbcreq = -1;
static dissector_handle_t docsis_dbcreq_handle;
/* Dissection */
static int
dissect_dbcreq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void* data _U_)
{
proto_item *dbcreq_item;
proto_tree *dbcreq_tree = NULL;
guint16 transid;
tvbuff_t *next_tvb;
transid = tvb_get_ntohs (tvb, 0);
col_add_fstr (pinfo->cinfo, COL_INFO,
"Dynamic Bonding Change Request: Tran-Id = %u", transid);
if (tree)
{
dbcreq_item = proto_tree_add_protocol_format (tree, proto_docsis_dbcreq,
tvb, 0, -1,
"Dynamic Bonding Change Request");
dbcreq_tree = proto_item_add_subtree (dbcreq_item, ett_docsis_dbcreq);
proto_tree_add_item (dbcreq_tree, hf_docsis_dbcreq_tranid,
tvb, 0, 2, ENC_BIG_ENDIAN);
proto_tree_add_item( dbcreq_tree, hf_docsis_dbcreq_number_of_fragments,
tvb, 2, 1, ENC_BIG_ENDIAN );
proto_tree_add_item( dbcreq_tree, hf_docsis_dbcreq_fragment_sequence_number ,
tvb, 3, 1, ENC_BIG_ENDIAN );
}
/* Call Dissector for Appendix C TLV's */
next_tvb = tvb_new_subset_remaining (tvb, 4);
call_dissector (docsis_tlv_handle, next_tvb, pinfo, dbcreq_tree);
return tvb_captured_length(tvb);
}
/* Register the protocol with Wireshark */
void
proto_register_docsis_dbcreq (void)
{
static hf_register_info hf[] = {
{&hf_docsis_dbcreq_tranid,
{"Transaction Id", "docsis_dbcreq.tranid",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL}
},
{&hf_docsis_dbcreq_number_of_fragments,
{"Number of Fragments", "docsis_dbcreq.number_of_fragments",
FT_UINT8, BASE_HEX_DEC, NULL, 0x0,
NULL, HFILL}
},
{&hf_docsis_dbcreq_fragment_sequence_number,
{"Fragment Seq No", "docsis_dbcreq.fragment_sequence_number",
FT_UINT8, BASE_HEX_DEC, NULL, 0x0,
NULL, HFILL}
},
};
static gint *ett[] = {
&ett_docsis_dbcreq,
};
proto_docsis_dbcreq = proto_register_protocol ("DOCSIS Dynamic Bonding Change Request",
"DOCSIS DBC-REQ",
"docsis_dbcreq");
proto_register_field_array (proto_docsis_dbcreq, hf, array_length (hf));
proto_register_subtree_array (ett, array_length (ett));
docsis_dbcreq_handle = register_dissector ("docsis_dbcreq", dissect_dbcreq, proto_docsis_dbcreq);
}
void
proto_reg_handoff_docsis_dbcreq (void)
{
docsis_tlv_handle = find_dissector ("docsis_tlv");
dissector_add_uint ("docsis_mgmt", 0x24, docsis_dbcreq_handle);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
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