2 * Routines for Registration Response Message 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_regrsp = -1;
34 static int hf_docsis_regrsp_sid = -1;
35 static int hf_docsis_regrsp_response = -1;
36 static dissector_handle_t docsis_tlv_handle;
38 /* Defined in packet-tlv.c */
39 extern value_string docsis_conf_code[];
42 /* Initialize the subtree pointers */
43 static gint ett_docsis_regrsp = -1;
45 /* Code to actually dissect the packets */
47 dissect_regrsp (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
51 proto_tree *regrsp_tree = NULL;
56 sid = tvb_get_ntohs (tvb, 0);
57 response = tvb_get_guint8 (tvb, 2);
59 col_add_fstr (pinfo->cinfo, COL_INFO,
60 "Registration Response SID = %u (%s)", sid,
61 val_to_str (response, docsis_conf_code, "%d"));
66 proto_tree_add_protocol_format (tree, proto_docsis_regrsp, tvb, 0, -1,
67 "Registration Response");
68 regrsp_tree = proto_item_add_subtree (it, ett_docsis_regrsp);
69 proto_tree_add_item (regrsp_tree, hf_docsis_regrsp_sid, tvb, 0, 2,
71 proto_tree_add_item (regrsp_tree, hf_docsis_regrsp_response, tvb, 2, 1,
74 /* Call Dissector for Appendix C TLV's */
75 next_tvb = tvb_new_subset_remaining (tvb, 3);
76 call_dissector (docsis_tlv_handle, next_tvb, pinfo, regrsp_tree);
80 /* Register the protocol with Wireshark */
82 /* this format is require because a script is used to build the C function
83 that calls all the protocol registration.
88 proto_register_docsis_regrsp (void)
91 /* Setup list of header fields See Section 1.6.1 for details*/
92 static hf_register_info hf[] = {
93 {&hf_docsis_regrsp_sid,
94 {"Service Identifier", "docsis_regrsp.sid",
95 FT_UINT16, BASE_DEC, NULL, 0x0,
98 {&hf_docsis_regrsp_response,
99 {"Response Code", "docsis_regrsp.respnse",
100 FT_UINT8, BASE_DEC, VALS (docsis_conf_code), 0x0,
105 /* Setup protocol subtree array */
106 static gint *ett[] = {
110 /* Register the protocol name and description */
111 proto_docsis_regrsp =
112 proto_register_protocol ("DOCSIS Registration Responses", "DOCSIS REG-RSP",
115 /* Required function calls to register the header fields and subtrees used */
116 proto_register_field_array (proto_docsis_regrsp, hf, array_length (hf));
117 proto_register_subtree_array (ett, array_length (ett));
119 register_dissector ("docsis_regrsp", dissect_regrsp, proto_docsis_regrsp);
123 /* If this dissector uses sub-dissector registration add a registration routine.
124 This format is required because a script is used to find these routines and
125 create the code that calls these routines.
128 proto_reg_handoff_docsis_regrsp (void)
130 dissector_handle_t docsis_regrsp_handle;
132 docsis_regrsp_handle = find_dissector ("docsis_regrsp");
133 docsis_tlv_handle = find_dissector ("docsis_tlv");
134 dissector_add_uint ("docsis_mgmt", 0x07, docsis_regrsp_handle);