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/* packet-dbcrsp.c
* Routines for DOCSIS 3.0 Dynamic Bonding Change Response Message dissection.
* Copyright 2010, Guido Reismueller <g.reismueller[AT]avm.de>
*
* $Id$
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <epan/packet.h>
extern value_string docsis_conf_code[];
/* Initialize the protocol and registered fields */
static int proto_docsis_dbcrsp = -1;
static int hf_docsis_dbcrsp_tranid = -1;
static int hf_docsis_dbcrsp_conf_code = -1;
static dissector_handle_t docsis_tlv_handle;
/* Initialize the subtree pointers */
static gint ett_docsis_dbcrsp = -1;
/* Code to actually dissect the packets */
static void
dissect_dbcrsp (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
{
proto_item *dbcrsp_item;
proto_tree *dbcrsp_tree = NULL;
guint16 transid;
guint8 confcode;
tvbuff_t *next_tvb;
transid = tvb_get_ntohs (tvb, 0);
confcode = tvb_get_guint8 (tvb, 2);
col_add_fstr (pinfo->cinfo, COL_INFO,
"Dynamic Bonding Change Response: Tran-Id = %u (%s)", transid,
val_to_str (confcode, docsis_conf_code, "%d"));
if (tree)
{
dbcrsp_item = proto_tree_add_protocol_format (tree, proto_docsis_dbcrsp,
tvb, 0, -1,
"Dynamic Bonding Change Response");
dbcrsp_tree = proto_item_add_subtree (dbcrsp_item, ett_docsis_dbcrsp);
proto_tree_add_item (dbcrsp_tree, hf_docsis_dbcrsp_tranid,
tvb, 0, 2, ENC_BIG_ENDIAN);
proto_tree_add_item( dbcrsp_tree, hf_docsis_dbcrsp_conf_code,
tvb, 2, 1, ENC_BIG_ENDIAN );
}
/* Call Dissector for Appendix C TLV's */
next_tvb = tvb_new_subset_remaining (tvb, 3);
call_dissector (docsis_tlv_handle, next_tvb, pinfo, dbcrsp_tree);
}
/* Register the protocol with Wireshark */
/*
* this format is required because a script is used to build the C function
* that calls all the protocol registration.
*/
void
proto_register_docsis_dbcrsp (void)
{
/* Setup list of header fields See Section 1.6.1 for details*/
static hf_register_info hf[] = {
{&hf_docsis_dbcrsp_tranid,
{"Transaction Id", "docsis_dbcrsp.tranid",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL}
},
{&hf_docsis_dbcrsp_conf_code,
{"Confirmation Code", "docsis_dbcrsp.conf_code",
FT_UINT8, BASE_DEC, VALS (docsis_conf_code), 0x0,
NULL, HFILL}
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_docsis_dbcrsp,
};
/* Register the protocol name and description */
proto_docsis_dbcrsp = proto_register_protocol ("DOCSIS Dynamic Bonding Change Response",
"DOCSIS DBC-RSP",
"docsis_dbcrsp");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array (proto_docsis_dbcrsp, hf, array_length (hf));
proto_register_subtree_array (ett, array_length (ett));
register_dissector ("docsis_dbcrsp", dissect_dbcrsp, proto_docsis_dbcrsp);
}
/* If this dissector uses sub-dissector registration add a registration routine.
This format is required because a script is used to find these routines and
create the code that calls these routines.
*/
void
proto_reg_handoff_docsis_dbcrsp (void)
{
dissector_handle_t docsis_dbcrsp_handle;
docsis_dbcrsp_handle = find_dissector ("docsis_dbcrsp");
docsis_tlv_handle = find_dissector ("docsis_tlv");
dissector_add_uint ("docsis_mgmt", 0x25, docsis_dbcrsp_handle);
}
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