2 * Routines for Dynamic Service Addition Response dissection
3 * Copyright 2002, Anand V. Narwani <anarwani@cisco.com>
5 * Ethereal - Network traffic analyzer
6 * By Gerald Combs <gerald@ethereal.com>
7 * Copyright 1998 Gerald Combs
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
28 #include "plugins/plugin_api.h"
29 #include "plugins/plugin_api_defs.h"
30 #include "moduleinfo.h"
38 #include <epan/packet.h>
40 /* Initialize the protocol and registered fields */
41 static int proto_docsis_dsarsp = -1;
42 static int hf_docsis_dsarsp = -1;
43 static int hf_docsis_dsarsp_tranid = -1;
44 static int hf_docsis_dsarsp_response = -1;
45 static dissector_handle_t docsis_tlv_handle;
48 /* Initialize the subtree pointers */
49 static gint ett_docsis_dsarsp = -1;
51 extern value_string docsis_conf_code[];
53 /* Code to actually dissect the packets */
55 dissect_dsarsp (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
59 proto_tree *dsarsp_tree;
65 transid = tvb_get_ntohs (tvb, 0);
66 response = tvb_get_guint8 (tvb, 2);
67 tlv_data_len = tvb_length_remaining (tvb, 3);
69 if (check_col (pinfo->cinfo, COL_INFO))
71 col_clear (pinfo->cinfo, COL_INFO);
72 col_add_fstr (pinfo->cinfo, COL_INFO,
73 "Dynamic Service Add Response ID = %u (%s)", transid,
74 val_to_str (response, docsis_conf_code, "%s"));
80 proto_tree_add_protocol_format (tree, proto_docsis_dsarsp, tvb, 0,
81 tvb_length_remaining (tvb, 0),
83 dsarsp_tree = proto_item_add_subtree (it, ett_docsis_dsarsp);
84 proto_tree_add_item (dsarsp_tree, hf_docsis_dsarsp_tranid, tvb, 0, 2,
86 proto_tree_add_item (dsarsp_tree, hf_docsis_dsarsp_response, tvb, 2, 1,
89 /* Call dissector for Appendix C TLV's */
90 next_tvb = tvb_new_subset (tvb, 3, tlv_data_len, tlv_data_len);
91 call_dissector (docsis_tlv_handle, next_tvb, pinfo, dsarsp_tree);
101 /* Register the protocol with Ethereal */
103 /* this format is require because a script is used to build the C function
104 that calls all the protocol registration.
109 proto_register_docsis_dsarsp (void)
112 /* Setup list of header fields See Section 1.6.1 for details*/
113 static hf_register_info hf[] = {
115 {"Dynamic Service Add Request", "docsis.dsarsp",
116 FT_BYTES, BASE_HEX, NULL, 0x0,
117 "Dynamic Service Add Request", HFILL}
119 {&hf_docsis_dsarsp_tranid,
120 {"Transaction Id", "docsis.dsarsp.tranid",
121 FT_UINT16, BASE_DEC, NULL, 0x0,
122 "Service Identifier", HFILL}
124 {&hf_docsis_dsarsp_response,
125 {"Confirmation Code", "docsis.dsarsp.confcode",
126 FT_UINT8, BASE_DEC, VALS (docsis_conf_code), 0x0,
127 "Confirmation Code", HFILL}
131 /* Setup protocol subtree array */
132 static gint *ett[] = {
136 /* Register the protocol name and description */
137 proto_docsis_dsarsp =
138 proto_register_protocol ("DOCSIS Dynamic Service Addition Response",
139 "DOCSIS DSA-RSP", "docsis_dsarsp");
141 /* Required function calls to register the header fields and subtrees used */
142 proto_register_field_array (proto_docsis_dsarsp, hf, array_length (hf));
143 proto_register_subtree_array (ett, array_length (ett));
145 register_dissector ("docsis_dsarsp", dissect_dsarsp, proto_docsis_dsarsp);
149 /* If this dissector uses sub-dissector registration add a registration routine.
150 This format is required because a script is used to find these routines and
151 create the code that calls these routines.
154 proto_reg_handoff_docsis_dsarsp (void)
156 dissector_handle_t docsis_dsarsp_handle;
158 docsis_dsarsp_handle = find_dissector ("docsis_dsarsp");
159 docsis_tlv_handle = find_dissector ("docsis_tlv");
160 dissector_add ("docsis_mgmt", 0x10, docsis_dsarsp_handle);