154 lines
5.4 KiB
C
154 lines
5.4 KiB
C
/* packet-bintrngreq.c
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* Routines for DOCSIS 3.0 Bonded Intial Ranging Request Message dissection.
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* Copyright 2009, Geoffrey Kimball <gekimbal[AT]cisco.com>
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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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#include "config.h"
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#include <epan/packet.h>
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void proto_register_docsis_bintrngreq(void);
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void proto_reg_handoff_docsis_bintrngreq(void);
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/* Initialize the protocol and registered fields */
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static int proto_docsis_bintrngreq = -1;
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static int hf_docsis_bintrngreq_down_chid = -1;
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static int hf_docsis_bintrngreq_mddsgid = -1;
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static int hf_docsis_bintrngreq_capflags = -1;
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static int hf_docsis_bintrngreq_up_chid = -1;
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static int hf_docsis_bintrngreq_capflags_frag = -1;
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static int hf_docsis_bintrngreq_capflags_encrypt = -1;
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/* Initialize the subtree pointers */
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static gint ett_docsis_bintrngreq = -1;
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/* Dissection */
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static int
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dissect_bintrngreq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void* data _U_)
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{
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proto_item *bintrngreq_item;
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proto_tree *bintrngreq_tree;
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guint16 md_ds_sg_id;
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md_ds_sg_id = tvb_get_ntohs (tvb, 0);
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col_add_fstr (pinfo->cinfo, COL_INFO, "Bonded Ranging Request: MD-DS-SG-ID = %u (0x%X)",
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md_ds_sg_id, md_ds_sg_id );
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if (tree)
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{
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guint16 offset = 0;
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bintrngreq_item = proto_tree_add_protocol_format (tree, proto_docsis_bintrngreq,
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tvb, offset, tvb_captured_length(tvb),
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"Bonded Initial Ranging Request");
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bintrngreq_tree = proto_item_add_subtree (bintrngreq_item, ett_docsis_bintrngreq);
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proto_tree_add_item (bintrngreq_tree, hf_docsis_bintrngreq_capflags,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item( bintrngreq_tree, hf_docsis_bintrngreq_capflags_frag,
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tvb, offset, 1, ENC_BIG_ENDIAN );
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proto_tree_add_item( bintrngreq_tree, hf_docsis_bintrngreq_capflags_encrypt,
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tvb, offset, 1, ENC_BIG_ENDIAN );
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offset++;
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proto_tree_add_item (bintrngreq_tree, hf_docsis_bintrngreq_mddsgid,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item (bintrngreq_tree, hf_docsis_bintrngreq_down_chid,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item (bintrngreq_tree, hf_docsis_bintrngreq_up_chid,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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}
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return tvb_captured_length(tvb);
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}
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/* Register the protocol with Wireshark */
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void
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proto_register_docsis_bintrngreq (void)
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{
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static hf_register_info hf[] = {
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{&hf_docsis_bintrngreq_capflags,
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{"Capability Flags", "docsis_bintrngreq.capflags",
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FT_UINT8, BASE_HEX, NULL, 0x0,
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NULL, HFILL}
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},
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{&hf_docsis_bintrngreq_capflags_frag,
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{"Pre-3.0 Fragmentation", "docsis_bintrngreq.capflags.frag",
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FT_BOOLEAN, 8, NULL, (1<<7),
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"Pre-3.0 DOCSIS fragmentation is supported prior to registration", HFILL }
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},
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{&hf_docsis_bintrngreq_capflags_encrypt,
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{"Early Auth. & Encrypt", "docsis_bintrngreq.capflags.encrypt",
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FT_BOOLEAN, 8, NULL, (1<<6),
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"Early Authentication and Encryption supported", HFILL }
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},
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{&hf_docsis_bintrngreq_mddsgid,
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{"MD-DS-SG-ID", "docsis_bintrngreq.mddsgid",
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FT_UINT8, BASE_HEX_DEC, NULL, 0x0,
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"MAC Domain Downstream Service Group Identifier", HFILL}
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},
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{&hf_docsis_bintrngreq_down_chid,
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{"DS Chan ID", "docsis_bintrngreq.downchid",
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FT_UINT8, BASE_HEX_DEC, NULL, 0x0,
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NULL, HFILL}
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},
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{&hf_docsis_bintrngreq_up_chid,
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{"US Chan ID", "docsis_bintrngreq.upchid",
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FT_UINT8, BASE_HEX_DEC, NULL, 0x0,
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NULL, HFILL}
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},
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};
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static gint *ett[] = {
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&ett_docsis_bintrngreq,
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};
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proto_docsis_bintrngreq = proto_register_protocol ("DOCSIS Bonded Initial Ranging Message",
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"DOCSIS B-INT-RNG-REQ",
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"docsis_bintrngreq");
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proto_register_field_array (proto_docsis_bintrngreq, hf, array_length (hf));
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proto_register_subtree_array (ett, array_length (ett));
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register_dissector ("docsis_bintrngreq", dissect_bintrngreq, proto_docsis_bintrngreq);
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}
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void
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proto_reg_handoff_docsis_bintrngreq (void)
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{
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dissector_handle_t docsis_bintrngreq_handle;
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docsis_bintrngreq_handle = find_dissector ("docsis_bintrngreq");
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dissector_add_uint ("docsis_mgmt", 0x22, docsis_bintrngreq_handle);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local Variables:
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* c-basic-offset: 2
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=2 tabstop=8 expandtab:
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* :indentSize=2:tabSize=8:noTabs=true:
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*/
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