2 * Routines for Dynamic Service Change 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 <epan/packet.h>
32 /* Initialize the protocol and registered fields */
33 static int proto_docsis_dscreq = -1;
34 static int hf_docsis_dscreq_tranid = -1;
35 static dissector_handle_t docsis_tlv_handle;
38 /* Initialize the subtree pointers */
39 static gint ett_docsis_dscreq = -1;
41 /* Code to actually dissect the packets */
43 dissect_dscreq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
47 proto_tree *dscreq_tree = NULL;
52 transid = tvb_get_ntohs (tvb, 0);
54 col_clear (pinfo->cinfo, COL_INFO);
55 col_add_fstr (pinfo->cinfo, COL_INFO,
56 "Dynamic Service Change Request Tran-id = %u", transid);
61 proto_tree_add_protocol_format (tree, proto_docsis_dscreq, tvb, 0, -1,
63 dscreq_tree = proto_item_add_subtree (it, ett_docsis_dscreq);
64 proto_tree_add_item (dscreq_tree, hf_docsis_dscreq_tranid, tvb, 0, 2,
68 /* Call dissector for Appendix C TLV's */
69 next_tvb = tvb_new_subset_remaining (tvb, 2);
70 call_dissector (docsis_tlv_handle, next_tvb, pinfo, dscreq_tree);
77 /* Register the protocol with Wireshark */
79 /* this format is require because a script is used to build the C function
80 that calls all the protocol registration.
85 proto_register_docsis_dscreq (void)
88 /* Setup list of header fields See Section 1.6.1 for details*/
89 static hf_register_info hf[] = {
90 {&hf_docsis_dscreq_tranid,
91 {"Transaction Id", "docsis_dscreq.tranid",
92 FT_UINT16, BASE_DEC, NULL, 0x0,
97 /* Setup protocol subtree array */
98 static gint *ett[] = {
102 /* Register the protocol name and description */
103 proto_docsis_dscreq =
104 proto_register_protocol ("DOCSIS Dynamic Service Change Request",
105 "DOCSIS DSC-REQ", "docsis_dscreq");
107 /* Required function calls to register the header fields and subtrees used */
108 proto_register_field_array (proto_docsis_dscreq, hf, array_length (hf));
109 proto_register_subtree_array (ett, array_length (ett));
111 register_dissector ("docsis_dscreq", dissect_dscreq, proto_docsis_dscreq);
115 /* If this dissector uses sub-dissector registration add a registration routine.
116 This format is required because a script is used to find these routines and
117 create the code that calls these routines.
120 proto_reg_handoff_docsis_dscreq (void)
122 dissector_handle_t docsis_dscreq_handle;
124 docsis_dscreq_handle = find_dissector ("docsis_dscreq");
125 docsis_tlv_handle = find_dissector ("docsis_tlv");
126 dissector_add_uint ("docsis_mgmt", 0x12, docsis_dscreq_handle);