2 * Routines for Dynamic Service Addition 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 "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;
60 transid = tvb_get_ntohs (tvb, 0);
62 if (check_col (pinfo->cinfo, COL_INFO))
64 col_clear (pinfo->cinfo, COL_INFO);
65 col_add_fstr (pinfo->cinfo, COL_INFO,
66 "Dynamic Service Addition Request Tran-id = %u", transid);
72 proto_tree_add_protocol_format (tree, proto_docsis_dsareq, tvb, 0, -1,
74 dsareq_tree = proto_item_add_subtree (it, ett_docsis_dsareq);
75 proto_tree_add_item (dsareq_tree, hf_docsis_dsareq_tranid, tvb, 0, 2,
78 /* Call Dissector for Appendix C TLV's */
79 next_tvb = tvb_new_subset (tvb, 2, -1, -1);
80 call_dissector (docsis_tlv_handle, next_tvb, pinfo, dsareq_tree);
88 /* Register the protocol with Wireshark */
90 /* this format is require because a script is used to build the C function
91 that calls all the protocol registration.
96 proto_register_docsis_dsareq (void)
99 /* Setup list of header fields See Section 1.6.1 for details*/
100 static hf_register_info hf[] = {
102 {"Dynamic Service Addition Request", "docsis.dsareq",
103 FT_BYTES, BASE_HEX, NULL, 0x0,
104 "Dynamic Service Addition Request", HFILL}
106 {&hf_docsis_dsareq_tranid,
107 {"Transaction Id", "docsis.dsareq.tranid",
108 FT_UINT16, BASE_DEC, NULL, 0x0,
109 "Transaction Id", HFILL}
113 /* Setup protocol subtree array */
114 static gint *ett[] = {
118 /* Register the protocol name and description */
119 proto_docsis_dsareq =
120 proto_register_protocol ("DOCSIS Dynamic Service Addition Request",
121 "DOCSIS DSA-REQ", "docsis_dsareq");
123 /* Required function calls to register the header fields and subtrees used */
124 proto_register_field_array (proto_docsis_dsareq, hf, array_length (hf));
125 proto_register_subtree_array (ett, array_length (ett));
127 register_dissector ("docsis_dsareq", dissect_dsareq, proto_docsis_dsareq);
131 /* If this dissector uses sub-dissector registration add a registration routine.
132 This format is required because a script is used to find these routines and
133 create the code that calls these routines.
136 proto_reg_handoff_docsis_dsareq (void)
138 dissector_handle_t docsis_dsareq_handle;
140 docsis_dsareq_handle = find_dissector ("docsis_dsareq");
141 docsis_tlv_handle = find_dissector ("docsis_tlv");
142 dissector_add ("docsis_mgmt", 0x0F, docsis_dsareq_handle);