2 * Routines for Registration Acknowledge Message 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_regack = -1;
34 static int hf_docsis_regack = -1;
35 static int hf_docsis_regack_sid = -1;
36 static int hf_docsis_regack_response = -1;
37 static dissector_handle_t docsis_tlv_handle;
39 /* Defined in packet-tlv.c */
40 extern value_string docsis_conf_code[];
42 /* Initialize the subtree pointers */
43 static gint ett_docsis_regack = -1;
45 /* Code to actually dissect the packets */
47 dissect_regack (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
51 proto_tree *regack_tree = NULL;
56 sid = tvb_get_ntohs (tvb, 0);
57 response = tvb_get_guint8 (tvb, 2);
59 if (check_col (pinfo->cinfo, COL_INFO))
61 col_add_fstr (pinfo->cinfo, COL_INFO,
62 "Registration Acknowledge SID = %u (%s)", sid,
63 val_to_str (response, docsis_conf_code, "%s"));
68 proto_tree_add_protocol_format (tree, proto_docsis_regack, tvb, 0, -1,
69 "Registration Acknowledge");
70 regack_tree = proto_item_add_subtree (it, ett_docsis_regack);
71 proto_tree_add_item (regack_tree, hf_docsis_regack_sid, tvb, 0, 2,
73 proto_tree_add_item (regack_tree, hf_docsis_regack_response, tvb, 2, 1,
77 /* Call Dissector for Appendix C TLV's */
78 next_tvb = tvb_new_subset_remaining (tvb, 3);
79 call_dissector (docsis_tlv_handle, next_tvb, pinfo, regack_tree);
86 /* Register the protocol with Wireshark */
88 /* this format is require because a script is used to build the C function
89 that calls all the protocol registration.
94 proto_register_docsis_regack (void)
97 /* Setup list of header fields See Section 1.6.1 for details*/
98 static hf_register_info hf[] = {
100 {"Registration Request", "docsis_regack",
101 FT_BYTES, BASE_NONE, NULL, 0x0,
104 {&hf_docsis_regack_sid,
105 {"Service Identifier", "docsis_regack.sid",
106 FT_UINT16, BASE_DEC, NULL, 0x0,
109 {&hf_docsis_regack_response,
110 {"Response Code", "docsis_regack.respnse",
111 FT_UINT8, BASE_DEC, VALS (docsis_conf_code), 0x0,
116 /* Setup protocol subtree array */
117 static gint *ett[] = {
121 /* Register the protocol name and description */
122 proto_docsis_regack =
123 proto_register_protocol ("DOCSIS Registration Acknowledge",
124 "DOCSIS REG-ACK", "docsis_regack");
126 /* Required function calls to register the header fields and subtrees used */
127 proto_register_field_array (proto_docsis_regack, hf, array_length (hf));
128 proto_register_subtree_array (ett, array_length (ett));
130 register_dissector ("docsis_regack", dissect_regack, proto_docsis_regack);
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_regack (void)
141 dissector_handle_t docsis_regack_handle;
143 docsis_regack_handle = find_dissector ("docsis_regack");
144 docsis_tlv_handle = find_dissector ("docsis_tlv");
145 dissector_add ("docsis_mgmt", 0x0e, docsis_regack_handle);