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/* packet-bintrngreq.c
* Routines for DOCSIS 3.0 Bonded Intial Ranging Request Message dissection.
* Copyright 2009, Geoffrey Kimball <gekimbal[AT]cisco.com>
*
* $Id$
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <epan/packet.h>
/* Initialize the protocol and registered fields */
static int proto_docsis_bintrngreq = -1;
static int hf_docsis_bintrngreq_down_chid = -1;
static int hf_docsis_bintrngreq_mddsgid = -1;
static int hf_docsis_bintrngreq_capflags = -1;
static int hf_docsis_bintrngreq_up_chid = -1;
static int hf_docsis_bintrngreq_capflags_frag = -1;
static int hf_docsis_bintrngreq_capflags_encrypt = -1;
/* Initialize the subtree pointers */
static gint ett_docsis_bintrngreq = -1;
/* Code to actually dissect the packets */
static void
dissect_bintrngreq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
{
proto_item *bintrngreq_item;
proto_tree *bintrngreq_tree;
guint16 md_ds_sg_id;
md_ds_sg_id = tvb_get_ntohs (tvb, 0);
col_clear (pinfo->cinfo, COL_INFO);
col_add_fstr (pinfo->cinfo, COL_INFO, "Bonded Ranging Request: MD-DS-SG-ID = %u (0x%X)",
md_ds_sg_id, md_ds_sg_id );
if (tree)
{
guint16 offset = 0;
bintrngreq_item = proto_tree_add_protocol_format (tree, proto_docsis_bintrngreq,
tvb, offset, tvb_length_remaining (tvb, 0),
"Bonded Initial Ranging Request");
bintrngreq_tree = proto_item_add_subtree (bintrngreq_item, ett_docsis_bintrngreq);
proto_tree_add_item (bintrngreq_tree, hf_docsis_bintrngreq_capflags,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item( bintrngreq_tree, hf_docsis_bintrngreq_capflags_frag,
tvb, offset, 1, ENC_BIG_ENDIAN );
proto_tree_add_item( bintrngreq_tree, hf_docsis_bintrngreq_capflags_encrypt,
tvb, offset, 1, ENC_BIG_ENDIAN );
offset++;
proto_tree_add_item (bintrngreq_tree, hf_docsis_bintrngreq_mddsgid,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item (bintrngreq_tree, hf_docsis_bintrngreq_down_chid,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item (bintrngreq_tree, hf_docsis_bintrngreq_up_chid,
tvb, offset, 1, ENC_BIG_ENDIAN);
}
}
/* 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_bintrngreq (void)
{
/* Setup list of header fields See Section 1.6.1 for details*/
static hf_register_info hf[] = {
{&hf_docsis_bintrngreq_capflags,
{"Capability Flags", "docsis_bintrngreq.capflags",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL}
},
{ &hf_docsis_bintrngreq_capflags_frag,
{"Pre-3.0 Fragmentation", "docsis_bintrngreq.capflags.frag",
FT_BOOLEAN, 8, NULL, (1<<7),
"Pre-3.0 DOCSIS fragmentation is supported prior to registration", HFILL }
},
{ &hf_docsis_bintrngreq_capflags_encrypt,
{"Early Auth. & Encrypt", "docsis_bintrngreq.capflags.encrypt",
FT_BOOLEAN, 8, NULL, (1<<6),
"Early Authentication and Encryption supported", HFILL }
},
{&hf_docsis_bintrngreq_mddsgid,
{"MD-DS-SG-ID", "docsis_bintrngreq.mddsgid",
FT_UINT8, BASE_HEX_DEC, NULL, 0x0,
"MAC Domain Downstream Service Group Identifier", HFILL}
},
{&hf_docsis_bintrngreq_down_chid,
{"DS Chan ID", "docsis_bintrngreq.downchid",
FT_UINT8, BASE_HEX_DEC, NULL, 0x0,
NULL, HFILL}
},
{&hf_docsis_bintrngreq_up_chid,
{"US Chan ID", "docsis_bintrngreq.upchid",
FT_UINT8, BASE_HEX_DEC, NULL, 0x0,
NULL, HFILL}
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_docsis_bintrngreq,
};
/* Register the protocol name and description */
proto_docsis_bintrngreq = proto_register_protocol ("DOCSIS Bonded Initial Ranging Message",
"DOCSIS B-INT-RNG-REQ",
"docsis_bintrngreq");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array (proto_docsis_bintrngreq, hf, array_length (hf));
proto_register_subtree_array (ett, array_length (ett));
register_dissector ("docsis_bintrngreq", dissect_bintrngreq, proto_docsis_bintrngreq);
}
/* 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_bintrngreq (void)
{
dissector_handle_t docsis_bintrngreq_handle;
docsis_bintrngreq_handle = find_dissector ("docsis_bintrngreq");
dissector_add_uint ("docsis_mgmt", 0x22, docsis_bintrngreq_handle);
}
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