diff options
Diffstat (limited to 'plugins/docsis/packet-intrngreq.c')
| -rw-r--r-- | plugins/docsis/packet-intrngreq.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/plugins/docsis/packet-intrngreq.c b/plugins/docsis/packet-intrngreq.c new file mode 100644 index 0000000000..d5cdcc896b --- /dev/null +++ b/plugins/docsis/packet-intrngreq.c @@ -0,0 +1,158 @@ +/* packet-intrngreq.c + * Routines for Intial Ranging Request Message dissection + * Copyright 2003, Brian Wheeler <brian.wheeler[AT]arrisi.com> + * + * $Id: packet-intrngreq.c,v 1.1 2004/03/17 06:55:03 guy Exp $ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * 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 "plugins/plugin_api.h" +#include "plugins/plugin_api_defs.h" +#include "moduleinfo.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <gmodule.h> + +#include <epan/packet.h> + + +/* Initialize the protocol and registered fields */ +static int proto_docsis_intrngreq = -1; +static int hf_docsis_intrngreq = -1; +static int hf_docsis_intrngreq_down_chid = -1; +static int hf_docsis_intrngreq_sid = -1; +static int hf_docsis_intrngreq_up_chid = -1; + + +/* Initialize the subtree pointers */ +static gint ett_docsis_intrngreq = -1; + +/* Code to actually dissect the packets */ +static void +dissect_intrngreq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree) +{ + proto_item *intrngreq_item; + proto_tree *intrngreq_tree; + guint16 sid; + + sid = tvb_get_ntohs (tvb, 0); + + if (check_col (pinfo->cinfo, COL_INFO)) + { + col_clear (pinfo->cinfo, COL_INFO); + col_add_fstr (pinfo->cinfo, COL_INFO, "Ranging Request: SID = %u",sid); + } + + if (tree) + { + intrngreq_item = + proto_tree_add_protocol_format (tree, proto_docsis_intrngreq, tvb, 0, + tvb_length_remaining (tvb, 0), + "Initial Ranging Request"); + intrngreq_tree = proto_item_add_subtree (intrngreq_item, ett_docsis_intrngreq); + proto_tree_add_item (intrngreq_tree, hf_docsis_intrngreq_sid, tvb, 0, 2, + FALSE); + proto_tree_add_item (intrngreq_tree, hf_docsis_intrngreq_down_chid, tvb, 2, 1, + FALSE); + proto_tree_add_item (intrngreq_tree, hf_docsis_intrngreq_up_chid, tvb, 3, + 1, FALSE); + } + + +} + + + + +/* Register the protocol with Ethereal */ + +/* this format is require because a script is used to build the C function + that calls all the protocol registration. +*/ + + +void +proto_register_docsis_intrngreq (void) +{ + +/* Setup list of header fields See Section 1.6.1 for details*/ + static hf_register_info hf[] = { + {&hf_docsis_intrngreq, + {"RNG-REQ Message", "docsis.intrngreq", + FT_BYTES, BASE_HEX, NULL, 0x0, + "Ranging Request Message", HFILL} + }, + {&hf_docsis_intrngreq_sid, + {"Service Identifier", "docsis.intrngreq.sid", + FT_UINT16, BASE_DEC, NULL, 0x0, + "Service Identifier", HFILL} + }, + {&hf_docsis_intrngreq_down_chid, + {"Downstream Channel ID", "docsis.intrngreq.downchid", + FT_UINT8, BASE_DEC, NULL, 0x0, + "Downstream Channel ID", HFILL} + }, + {&hf_docsis_intrngreq_up_chid, + {"Upstream Channel ID", "docsis.intrngreq.upchid", + FT_UINT8, BASE_DEC, NULL, 0x0, + "Upstream Channel ID", HFILL} + }, + + }; + +/* Setup protocol subtree array */ + static gint *ett[] = { + &ett_docsis_intrngreq, + }; + +/* Register the protocol name and description */ + proto_docsis_intrngreq = proto_register_protocol ("DOCSIS Initial Ranging Message", + "DOCSIS INT-RNG-REQ", + "docsis_intrngreq"); + +/* Required function calls to register the header fields and subtrees used */ + proto_register_field_array (proto_docsis_intrngreq, hf, array_length (hf)); + proto_register_subtree_array (ett, array_length (ett)); + + register_dissector ("docsis_intrngreq", dissect_intrngreq, proto_docsis_intrngreq); +} + + +/* 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_intrngreq (void) +{ + dissector_handle_t docsis_intrngreq_handle; + + docsis_intrngreq_handle = find_dissector ("docsis_intrngreq"); + dissector_add ("docsis_mgmt", 0x1E, docsis_intrngreq_handle); + +} |