2 * Routines for Registration Acknowledge Message 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"
36 #ifdef HAVE_SYS_TYPES_H
37 # include <sys/types.h>
40 #ifdef HAVE_NETINET_IN_H
41 # include <netinet/in.h>
46 #ifdef NEED_SNPRINTF_H
47 # include "snprintf.h"
50 #include <epan/packet.h>
52 /* Initialize the protocol and registered fields */
53 static int proto_docsis_regack = -1;
54 static int hf_docsis_regack = -1;
55 static int hf_docsis_regack_sid = -1;
56 static int hf_docsis_regack_response = -1;
57 static dissector_handle_t docsis_tlv_handle;
59 /* Defined in packet-tlv.c */
60 extern value_string docsis_conf_code[];
62 /* Initialize the subtree pointers */
63 static gint ett_docsis_regack = -1;
65 /* Code to actually dissect the packets */
67 dissect_regack (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
71 proto_tree *regack_tree;
77 sid = tvb_get_ntohs (tvb, 0);
78 response = tvb_get_guint8 (tvb, 2);
79 tlv_data_len = tvb_length_remaining (tvb, 3);
81 if (check_col (pinfo->cinfo, COL_INFO))
83 col_clear (pinfo->cinfo, COL_INFO);
84 col_add_fstr (pinfo->cinfo, COL_INFO,
85 "Registration Acknowledge SID = %u (%s)", sid,
86 val_to_str (response, docsis_conf_code, "%s"));
91 proto_tree_add_protocol_format (tree, proto_docsis_regack, tvb, 0,
92 tvb_length_remaining (tvb, 0),
93 "Registration Acknowledge");
94 regack_tree = proto_item_add_subtree (it, ett_docsis_regack);
95 proto_tree_add_item (regack_tree, hf_docsis_regack_sid, tvb, 0, 2,
97 proto_tree_add_item (regack_tree, hf_docsis_regack_response, tvb, 2, 1,
100 /* Call Dissector for Appendix C TLV's */
101 next_tvb = tvb_new_subset (tvb, 3, tlv_data_len, tlv_data_len);
102 call_dissector (docsis_tlv_handle, next_tvb, pinfo, regack_tree);
110 /* Register the protocol with Ethereal */
112 /* this format is require because a script is used to build the C function
113 that calls all the protocol registration.
118 proto_register_docsis_regack (void)
121 /* Setup list of header fields See Section 1.6.1 for details*/
122 static hf_register_info hf[] = {
124 {"Registration Request", "docsis.regack",
125 FT_BYTES, BASE_HEX, NULL, 0x0,
126 "Registration Request", HFILL}
128 {&hf_docsis_regack_sid,
129 {"Service Identifier", "docsis.regack.sid",
130 FT_UINT16, BASE_DEC, NULL, 0x0,
131 "Service Identifier", HFILL}
133 {&hf_docsis_regack_response,
134 {"Response Code", "docsis.regack.respnse",
135 FT_UINT8, BASE_DEC, VALS (docsis_conf_code), 0x0,
136 "Response Code", HFILL}
140 /* Setup protocol subtree array */
141 static gint *ett[] = {
145 /* Register the protocol name and description */
146 proto_docsis_regack =
147 proto_register_protocol ("DOCSIS Registration Acknowledge",
148 "DOCSIS REG-ACK", "docsis_regack");
150 /* Required function calls to register the header fields and subtrees used */
151 proto_register_field_array (proto_docsis_regack, hf, array_length (hf));
152 proto_register_subtree_array (ett, array_length (ett));
154 register_dissector ("docsis_regack", dissect_regack, proto_docsis_regack);
158 /* If this dissector uses sub-dissector registration add a registration routine.
159 This format is required because a script is used to find these routines and
160 create the code that calls these routines.
163 proto_reg_handoff_docsis_regack (void)
165 dissector_handle_t docsis_regack_handle;
167 docsis_regack_handle = find_dissector ("docsis_regack");
168 docsis_tlv_handle = find_dissector ("docsis_tlv");
169 dissector_add ("docsis_mgmt", 0x0e, docsis_regack_handle);