2 * Routines for Dynamic Service Change Response 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 "moduleinfo.h"
38 #include <epan/packet.h>
40 /* Initialize the protocol and registered fields */
41 static int proto_docsis_dscrsp = -1;
42 static int hf_docsis_dscrsp = -1;
43 static int hf_docsis_dscrsp_tranid = -1;
44 static int hf_docsis_dscrsp_response = -1;
45 static dissector_handle_t docsis_tlv_handle;
48 /* Initialize the subtree pointers */
49 static gint ett_docsis_dscrsp = -1;
51 extern value_string docsis_conf_code[];
53 /* Code to actually dissect the packets */
55 dissect_dscrsp (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
59 proto_tree *dscrsp_tree;
65 transid = tvb_get_ntohs (tvb, 0);
66 response = tvb_get_guint8 (tvb, 2);
68 if (check_col (pinfo->cinfo, COL_INFO))
70 col_clear (pinfo->cinfo, COL_INFO);
71 col_add_fstr (pinfo->cinfo, COL_INFO,
72 "Dynamic Service Change Response ID = %u (%s)", transid,
73 val_to_str (response, docsis_conf_code, "%s"));
79 proto_tree_add_protocol_format (tree, proto_docsis_dscrsp, tvb, 0, -1,
81 dscrsp_tree = proto_item_add_subtree (it, ett_docsis_dscrsp);
82 proto_tree_add_item (dscrsp_tree, hf_docsis_dscrsp_tranid, tvb, 0, 2,
84 proto_tree_add_item (dscrsp_tree, hf_docsis_dscrsp_response, tvb, 2, 1,
87 /* Call Dissector for Appendix C TLV's */
88 next_tvb = tvb_new_subset (tvb, 3, -1, -1);
89 call_dissector (docsis_tlv_handle, next_tvb, pinfo, dscrsp_tree);
96 /* Register the protocol with Ethereal */
98 /* this format is require because a script is used to build the C function
99 that calls all the protocol registration.
104 proto_register_docsis_dscrsp (void)
107 /* Setup list of header fields See Section 1.6.1 for details*/
108 static hf_register_info hf[] = {
110 {"Dynamic Service Change Request", "docsis.dscrsp",
111 FT_BYTES, BASE_HEX, NULL, 0x0,
112 "Dynamic Service Add Request", HFILL}
114 {&hf_docsis_dscrsp_tranid,
115 {"Transaction Id", "docsis.dscrsp.tranid",
116 FT_UINT16, BASE_DEC, NULL, 0x0,
117 "Service Identifier", HFILL}
119 {&hf_docsis_dscrsp_response,
120 {"Confirmation Code", "docsis.dscrsp.confcode",
121 FT_UINT8, BASE_DEC, VALS (docsis_conf_code), 0x0,
122 "Confirmation Code", HFILL}
126 /* Setup protocol subtree array */
127 static gint *ett[] = {
131 /* Register the protocol name and description */
132 proto_docsis_dscrsp =
133 proto_register_protocol ("DOCSIS Dynamic Service Change Response",
134 "DOCSIS DSC-RSP", "docsis_dscrsp");
136 /* Required function calls to register the header fields and subtrees used */
137 proto_register_field_array (proto_docsis_dscrsp, hf, array_length (hf));
138 proto_register_subtree_array (ett, array_length (ett));
140 register_dissector ("docsis_dscrsp", dissect_dscrsp, proto_docsis_dscrsp);
144 /* If this dissector uses sub-dissector registration add a registration routine.
145 This format is required because a script is used to find these routines and
146 create the code that calls these routines.
149 proto_reg_handoff_docsis_dscrsp (void)
151 dissector_handle_t docsis_dscrsp_handle;
153 docsis_dscrsp_handle = find_dissector ("docsis_dscrsp");
154 docsis_tlv_handle = find_dissector ("docsis_tlv");
155 dissector_add ("docsis_mgmt", 0x13, docsis_dscrsp_handle);