2 * Routines for Dynamic Service Addition Request 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_dsareq = -1;
42 static int hf_docsis_dsareq = -1;
43 static int hf_docsis_dsareq_tranid = -1;
44 static dissector_handle_t docsis_tlv_handle;
47 /* Initialize the subtree pointers */
48 static gint ett_docsis_dsareq = -1;
50 /* Code to actually dissect the packets */
52 dissect_dsareq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
56 proto_tree *dsareq_tree;
61 transid = tvb_get_ntohs (tvb, 0);
62 tlv_data_len = tvb_length_remaining (tvb, 2);
64 if (check_col (pinfo->cinfo, COL_INFO))
66 col_clear (pinfo->cinfo, COL_INFO);
67 col_add_fstr (pinfo->cinfo, COL_INFO,
68 "Dynamic Service Addition Request Tran-id = %u", transid);
74 proto_tree_add_protocol_format (tree, proto_docsis_dsareq, tvb, 0,
75 tvb_length_remaining (tvb, 0),
77 dsareq_tree = proto_item_add_subtree (it, ett_docsis_dsareq);
78 proto_tree_add_item (dsareq_tree, hf_docsis_dsareq_tranid, tvb, 0, 2,
81 /* Call Dissector for Appendix C TLV's */
82 next_tvb = tvb_new_subset (tvb, 2, tlv_data_len, tlv_data_len);
83 call_dissector (docsis_tlv_handle, next_tvb, pinfo, dsareq_tree);
91 /* Register the protocol with Ethereal */
93 /* this format is require because a script is used to build the C function
94 that calls all the protocol registration.
99 proto_register_docsis_dsareq (void)
102 /* Setup list of header fields See Section 1.6.1 for details*/
103 static hf_register_info hf[] = {
105 {"Dynamic Service Addition Request", "docsis.dsareq",
106 FT_BYTES, BASE_HEX, NULL, 0x0,
107 "Dynamic Service Addition Request", HFILL}
109 {&hf_docsis_dsareq_tranid,
110 {"Transaction Id", "docsis.dsareq.tranid",
111 FT_UINT16, BASE_DEC, NULL, 0x0,
112 "Transaction Id", HFILL}
116 /* Setup protocol subtree array */
117 static gint *ett[] = {
121 /* Register the protocol name and description */
122 proto_docsis_dsareq =
123 proto_register_protocol ("DOCSIS Dynamic Service Addition Request",
124 "DOCSIS DSA-REQ", "docsis_dsareq");
126 /* Required function calls to register the header fields and subtrees used */
127 proto_register_field_array (proto_docsis_dsareq, hf, array_length (hf));
128 proto_register_subtree_array (ett, array_length (ett));
130 register_dissector ("docsis_dsareq", dissect_dsareq, proto_docsis_dsareq);
134 /* If this dissector uses sub-dissector registration add a registration routine.
135 This format is required because a script is used to find these routines and
136 create the code that calls these routines.
139 proto_reg_handoff_docsis_dsareq (void)
141 dissector_handle_t docsis_dsareq_handle;
143 docsis_dsareq_handle = find_dissector ("docsis_dsareq");
144 docsis_tlv_handle = find_dissector ("docsis_tlv");
145 dissector_add ("docsis_mgmt", 0x0F, docsis_dsareq_handle);