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/* packet-retix-bpdu.c
* Routines for BPDU (Retix Spanning Tree Protocol) disassembly
*
* $Id$
*
* Copyright 2005 Giles Scott (gscott <AT> arubanetworks dot com>
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#if 0
#include <stdio.h>
#include <string.h>
#endif
#include <glib.h>
#include <epan/packet.h>
#if 0
#include "llcsaps.h"
#include "ppptypes.h"
#include "chdlctypes.h"
#endif
#include <epan/addr_resolv.h>
static gint ett_retix_bpdu = -1;
static int proto_retix_bpdu = -1;
static int hf_retix_bpdu_root_mac = -1;
static int hf_retix_bpdu_bridge_mac = -1;
static int hf_retix_bpdu_max_age = -1;
static int hf_retix_bpdu_hello_time = -1;
static int hf_retix_bpdu_forward_delay = -1;
/* I don't have the spec's for this protcol so its been reverse engineered
* It seems quite like 802.1D
* It looks like the protocol version is specified in the ethernet trailer
* In the single packet I have the trailer is
* "RevC CBPDU"
* There are several fields I've not dissected as I'm not exactly sure what they are
* What ever happened to Retix anyway?
*/
static void
dissect_retix_bpdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *retix_bpdu_tree;
proto_tree *ti;
const guint8 *bridge_mac_str;
if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
col_set_str(pinfo->cinfo, COL_PROTOCOL, "R-STP");
}
if (check_col(pinfo->cinfo, COL_INFO)) {
col_clear(pinfo->cinfo, COL_INFO);
}
bridge_mac_str = tvb_get_ptr(tvb, 10, 6);
if (check_col(pinfo->cinfo, COL_INFO)){
col_add_fstr(pinfo->cinfo, COL_INFO, "Bridge MAC %s", ether_to_str(bridge_mac_str));
}
retix_bpdu_tree = NULL;
if (tree) {
ti = proto_tree_add_item(tree, proto_retix_bpdu, tvb, 0, -1, FALSE);
retix_bpdu_tree = proto_item_add_subtree(ti, ett_retix_bpdu);
}
proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_root_mac, tvb, 0, 6, FALSE);
proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_bridge_mac, tvb, 10, 6, FALSE);
proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_max_age, tvb, 20, 2, FALSE);
proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_hello_time, tvb, 22, 2, FALSE);
proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_forward_delay, tvb, 24, 2, FALSE);
}
void
proto_register_retix_bpdu(void)
{
static hf_register_info hf[] = {
{ &hf_retix_bpdu_root_mac,
{ "Root MAC", "rstp.root.hw", FT_ETHER, BASE_NONE, NULL, 0x0,
"", HFILL}},
{ &hf_retix_bpdu_bridge_mac,
{ "Bridge MAC", "rstp.bridge.hw", FT_ETHER, BASE_NONE, NULL, 0x0,
"", HFILL}},
{ &hf_retix_bpdu_max_age,
{ "Max Age", "rstp.maxage", FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL}},
{ &hf_retix_bpdu_hello_time,
{ "Hello Time", "rstp.hello", FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL}},
{ &hf_retix_bpdu_forward_delay,
{ "Forward Delay", "rstp.forward", FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL}},
};
static gint *ett[] ={
&ett_retix_bpdu,
};
proto_retix_bpdu = proto_register_protocol("Retix Spanning Tree Protocol", "R-STP", "r-stp");
proto_register_field_array(proto_retix_bpdu, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
register_dissector("rbpdu", dissect_retix_bpdu, proto_retix_bpdu);
}
void
proto_reg_handoff_retix_bpdu(void)
{
}
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