2 * Routines for Wellfleet HDLC packet disassembly
3 * Copied from the Cisco HDLC packet disassembly routines
5 * $Id: packet-wfleet-hdlc.c,v 1.1 2002/12/20 07:56:07 sharpe Exp $
7 * Ethereal - Network traffic analyzer
8 * By Gerald Combs <gerald@ethereal.com>
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.
31 #include <epan/packet.h>
33 #include <epan/resolv.h>
34 #include "packet-chdlc.h"
35 #include "packet-ip.h"
37 static int proto_wfleet_hdlc = -1;
38 static int hf_wfleet_hdlc_addr = -1;
39 static int hf_wfleet_hdlc_cmd = -1;
41 static gint ett_wfleet_hdlc = -1;
43 dissector_handle_t eth_handle;
45 static const value_string wfleet_hdlc_cmd_vals[] = {
46 { 0x03, "Un-numbered I frame"},
51 dissect_wfleet_hdlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
54 proto_tree *fh_tree = NULL;
59 if (check_col(pinfo->cinfo, COL_RES_DL_SRC))
60 col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "N/A");
61 if (check_col(pinfo->cinfo, COL_RES_DL_DST))
62 col_set_str(pinfo->cinfo, COL_RES_DL_DST, "N/A");
63 if (check_col(pinfo->cinfo, COL_PROTOCOL))
64 col_set_str(pinfo->cinfo, COL_PROTOCOL, "WHDLC");
65 if (check_col(pinfo->cinfo, COL_INFO))
66 col_clear(pinfo->cinfo, COL_INFO);
68 addr = tvb_get_guint8(tvb, 0);
69 cmd = tvb_get_guint8(tvb, 1);
72 ti = proto_tree_add_item(tree, proto_wfleet_hdlc, tvb, 0, 2, FALSE);
73 fh_tree = proto_item_add_subtree(ti, ett_wfleet_hdlc);
75 proto_tree_add_uint(fh_tree, hf_wfleet_hdlc_addr, tvb, 0, 1, addr);
76 proto_tree_add_uint(fh_tree, hf_wfleet_hdlc_cmd, tvb, 1, 1, cmd);
81 * Build a tvb of the piece past the first two bytes and call the
85 next_tvb = tvb_new_subset(tvb, 2, -1, -1);
87 call_dissector(eth_handle, next_tvb, pinfo, tree);
92 proto_register_wfleet_hdlc(void)
94 static hf_register_info hf[] = {
95 { &hf_wfleet_hdlc_addr,
96 { "Address", "wfleet_hdlc.address", FT_UINT8, BASE_HEX,
97 NULL, 0x0, "", HFILL }},
98 { &hf_wfleet_hdlc_cmd,
99 { "Command", "wfleet_hdlc.command", FT_UINT8, BASE_HEX,
100 VALS(wfleet_hdlc_cmd_vals), 0x0, "", HFILL }},
102 static gint *ett[] = {
106 proto_wfleet_hdlc = proto_register_protocol("Wellfleet HDLC", "WHDLC", "whdlc");
107 proto_register_field_array(proto_wfleet_hdlc, hf, array_length(hf));
108 proto_register_subtree_array(ett, array_length(ett));
110 register_dissector("wfleet_hdlc", dissect_wfleet_hdlc, proto_wfleet_hdlc);
115 proto_reg_handoff_wfleet_hdlc(void)
117 dissector_handle_t wfleet_hdlc_handle;
119 wfleet_hdlc_handle = find_dissector("wfleet_hdlc");
120 dissector_add("wtap_encap", WTAP_ENCAP_WFLEET_HDLC, wfleet_hdlc_handle);
123 * Find the eth dissector and save a ref to it
126 eth_handle = find_dissector("eth");