2 * Routines for Baseline Privacy Key Management Request dissection
3 * Copyright 2002, Anand V. Narwani <anand[AT]narwani.org>
7 * Wireshark - Network traffic analyzer
8 * By Gerald Combs <gerald@wireshark.org>
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 <epan/packet.h>
32 /* Initialize the protocol and registered fields */
33 static int proto_docsis_bpkmreq = -1;
34 static int hf_docsis_bpkmreq = -1;
35 static int hf_docsis_bpkmreq_code = -1;
36 static int hf_docsis_bpkmreq_length = -1;
37 static int hf_docsis_bpkmreq_ident = -1;
39 static const value_string code_field_vals[] = {
60 /* Initialize the subtree pointers */
61 static gint ett_docsis_bpkmreq = -1;
63 static dissector_handle_t attrs_handle;
65 /* Code to actually dissect the packets */
67 dissect_bpkmreq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
71 proto_tree *bpkmreq_tree;
75 code = tvb_get_guint8 (tvb, 0);
77 if (check_col (pinfo->cinfo, COL_INFO))
79 col_clear (pinfo->cinfo, COL_INFO);
80 col_add_fstr (pinfo->cinfo, COL_INFO, "BPKM Request (%s)",
81 val_to_str (code, code_field_vals, "%s"));
87 proto_tree_add_protocol_format (tree, proto_docsis_bpkmreq, tvb, 0, -1,
88 "BPKM Request Message");
89 bpkmreq_tree = proto_item_add_subtree (it, ett_docsis_bpkmreq);
90 proto_tree_add_item (bpkmreq_tree, hf_docsis_bpkmreq_code, tvb, 0, 1,
92 proto_tree_add_item (bpkmreq_tree, hf_docsis_bpkmreq_ident, tvb, 1, 1,
94 proto_tree_add_item (bpkmreq_tree, hf_docsis_bpkmreq_length, tvb, 2, 2,
98 /* Code to Call subdissector */
99 attrs_tvb = tvb_new_subset_remaining (tvb, 4);
100 call_dissector (attrs_handle, attrs_tvb, pinfo, tree);
109 /* Register the protocol with Wireshark */
111 /* this format is require because a script is used to build the C function
112 that calls all the protocol registration.
117 proto_register_docsis_bpkmreq (void)
120 /* Setup list of header fields See Section 1.6.1 for details*/
121 static hf_register_info hf[] = {
123 {"BPKM Request Message", "docsis_bpkmreq",
124 FT_BYTES, BASE_NONE, NULL, 0x0,
127 {&hf_docsis_bpkmreq_code,
128 {"BPKM Code", "docsis_bpkmreq.code",
129 FT_UINT8, BASE_DEC, VALS (code_field_vals), 0x0,
130 "BPKM Request Message", HFILL}
132 {&hf_docsis_bpkmreq_ident,
133 {"BPKM Identifier", "docsis_bpkmreq.ident",
134 FT_UINT8, BASE_DEC, NULL, 0x0,
137 {&hf_docsis_bpkmreq_length,
138 {"BPKM Length", "docsis_bpkmreq.length",
139 FT_UINT16, BASE_DEC, NULL, 0x0,
144 /* Setup protocol subtree array */
145 static gint *ett[] = {
149 /* Register the protocol name and description */
150 proto_docsis_bpkmreq =
151 proto_register_protocol ("DOCSIS Baseline Privacy Key Management Request",
152 "DOCSIS BPKM-REQ", "docsis_bpkmreq");
154 /* Required function calls to register the header fields and subtrees used */
155 proto_register_field_array (proto_docsis_bpkmreq, hf, array_length (hf));
156 proto_register_subtree_array (ett, array_length (ett));
158 register_dissector ("docsis_bpkmreq", dissect_bpkmreq,
159 proto_docsis_bpkmreq);
163 /* If this dissector uses sub-dissector registration add a registration routine.
164 This format is required because a script is used to find these routines and
165 create the code that calls these routines.
168 proto_reg_handoff_docsis_bpkmreq (void)
170 dissector_handle_t docsis_bpkmreq_handle;
172 docsis_bpkmreq_handle = find_dissector ("docsis_bpkmreq");
173 attrs_handle = find_dissector ("docsis_bpkmattr");
174 dissector_add ("docsis_mgmt", 0x0C, docsis_bpkmreq_handle);