2 * Routines for Registration Response Message dissection
3 * Copyright 2002, Anand V. Narwani <anand[AT]narwani.org>
7 * Ethereal - Network traffic analyzer
8 * By Gerald Combs <gerald@ethereal.com>
9 * Copyright 1998 Gerald Combs
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 #include "plugins/plugin_api.h"
31 #include "plugins/plugin_api_defs.h"
32 #include "moduleinfo.h"
40 #include <epan/packet.h>
42 /* Initialize the protocol and registered fields */
43 static int proto_docsis_regrsp = -1;
44 static int hf_docsis_regrsp = -1;
45 static int hf_docsis_regrsp_sid = -1;
46 static int hf_docsis_regrsp_response = -1;
47 static dissector_handle_t docsis_tlv_handle;
49 /* Defined in packet-tlv.c */
50 extern value_string docsis_conf_code[];
53 /* Initialize the subtree pointers */
54 static gint ett_docsis_regrsp = -1;
56 /* Code to actually dissect the packets */
58 dissect_regrsp (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
62 proto_tree *regrsp_tree;
67 sid = tvb_get_ntohs (tvb, 0);
68 response = tvb_get_guint8 (tvb, 2);
70 if (check_col (pinfo->cinfo, COL_INFO))
72 col_clear (pinfo->cinfo, COL_INFO);
73 col_add_fstr (pinfo->cinfo, COL_INFO,
74 "Registration Response SID = %u (%s)", sid,
75 val_to_str (response, docsis_conf_code, "%s"));
81 proto_tree_add_protocol_format (tree, proto_docsis_regrsp, tvb, 0, -1,
82 "Registration Response");
83 regrsp_tree = proto_item_add_subtree (it, ett_docsis_regrsp);
84 proto_tree_add_item (regrsp_tree, hf_docsis_regrsp_sid, tvb, 0, 2,
86 proto_tree_add_item (regrsp_tree, hf_docsis_regrsp_response, tvb, 2, 1,
88 /* Call Dissector for Appendix C TLV's */
89 next_tvb = tvb_new_subset (tvb, 3, -1, -1);
90 call_dissector (docsis_tlv_handle, next_tvb, pinfo, regrsp_tree);
95 /* Register the protocol with Ethereal */
97 /* this format is require because a script is used to build the C function
98 that calls all the protocol registration.
103 proto_register_docsis_regrsp (void)
106 /* Setup list of header fields See Section 1.6.1 for details*/
107 static hf_register_info hf[] = {
109 {"Registration Response", "docsis.regrsp",
110 FT_BYTES, BASE_HEX, NULL, 0x0,
111 "Registration Request", HFILL}
113 {&hf_docsis_regrsp_sid,
114 {"Service Identifier", "docsis.regrsp.sid",
115 FT_UINT16, BASE_DEC, NULL, 0x0,
116 "Service Identifier", HFILL}
118 {&hf_docsis_regrsp_response,
119 {"Response Code", "docsis.regrsp.respnse",
120 FT_UINT8, BASE_DEC, VALS (docsis_conf_code), 0x0,
121 "Response Code", HFILL}
125 /* Setup protocol subtree array */
126 static gint *ett[] = {
130 /* Register the protocol name and description */
131 proto_docsis_regrsp =
132 proto_register_protocol ("DOCSIS Registration Responses", "DOCSIS REG-RSP",
135 /* Required function calls to register the header fields and subtrees used */
136 proto_register_field_array (proto_docsis_regrsp, hf, array_length (hf));
137 proto_register_subtree_array (ett, array_length (ett));
139 register_dissector ("docsis_regrsp", dissect_regrsp, proto_docsis_regrsp);
143 /* If this dissector uses sub-dissector registration add a registration routine.
144 This format is required because a script is used to find these routines and
145 create the code that calls these routines.
148 proto_reg_handoff_docsis_regrsp (void)
150 dissector_handle_t docsis_regrsp_handle;
152 docsis_regrsp_handle = find_dissector ("docsis_regrsp");
153 docsis_tlv_handle = find_dissector ("docsis_tlv");
154 dissector_add ("docsis_mgmt", 0x07, docsis_regrsp_handle);