forked from osmocom/wireshark
282080e26d
over Token Ring (and presumably other link layers using 802.2 LLC), and for the XNS IDP and SPP protocols. svn path=/trunk/; revision=13577
137 lines
4 KiB
C
137 lines
4 KiB
C
/* packet-retix-bpdu.c
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* Routines for BPDU (Retix Spanning Tree Protocol) disassembly
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*
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* $Id$
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*
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* Copyright 2005 Giles Scott (gscott <AT> arubanetworks dot com>
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#if 0
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#include <stdio.h>
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#include <string.h>
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#if 0
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#include "llcsaps.h"
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#include "ppptypes.h"
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#include "chdlctypes.h"
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#endif
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#include <epan/addr_resolv.h>
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static gint ett_retix_bpdu = -1;
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static int proto_retix_bpdu = -1;
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static int hf_retix_bpdu_root_mac = -1;
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static int hf_retix_bpdu_bridge_mac = -1;
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static int hf_retix_bpdu_max_age = -1;
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static int hf_retix_bpdu_hello_time = -1;
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static int hf_retix_bpdu_forward_delay = -1;
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/* I don't have the spec's for this protcol so its been reverse engineered
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* It seems quite like 802.1d
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* It looks like the protocol version is specified in the ethernet trailer
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* In the single packet I have the trailer is
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* "RevC CBPDU"
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* There are several fields I've not dissected as I'm not exactly sure what they are
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* What ever happened to Retix anyway?
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*/
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static void
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dissect_retix_bpdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_tree *retix_bpdu_tree;
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proto_tree *ti;
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const char *bridge_mac_str;
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if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "R-STP");
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}
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_clear(pinfo->cinfo, COL_INFO);
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}
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bridge_mac_str = tvb_get_ptr(tvb, 10, 6);
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if (check_col(pinfo->cinfo, COL_INFO)){
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col_add_fstr(pinfo->cinfo, COL_INFO, "Bridge MAC %s", ether_to_str(bridge_mac_str));
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}
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retix_bpdu_tree = NULL;
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if (tree) {
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ti = proto_tree_add_item(tree, proto_retix_bpdu, tvb, 0, -1, FALSE);
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retix_bpdu_tree = proto_item_add_subtree(ti, ett_retix_bpdu);
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}
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proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_root_mac, tvb, 0, 6, FALSE);
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proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_bridge_mac, tvb, 10, 6, FALSE);
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proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_max_age, tvb, 20, 2, FALSE);
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proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_hello_time, tvb, 22, 2, FALSE);
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proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_forward_delay, tvb, 24, 2, FALSE);
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}
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void
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proto_register_retix_bpdu(void)
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{
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static hf_register_info hf[] = {
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{ &hf_retix_bpdu_root_mac,
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{ "Root MAC", "rstp.root.hw", FT_ETHER, BASE_NONE, NULL, 0x0,
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"", HFILL}},
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{ &hf_retix_bpdu_bridge_mac,
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{ "Bridge MAC", "rstp.bridge.hw", FT_ETHER, BASE_NONE, NULL, 0x0,
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"", HFILL}},
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{ &hf_retix_bpdu_max_age,
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{ "Max Age", "rstp.maxage", FT_UINT16, BASE_DEC, NULL, 0x0,
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"", HFILL}},
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{ &hf_retix_bpdu_hello_time,
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{ "Hello Time", "rstp.hello", FT_UINT16, BASE_DEC, NULL, 0x0,
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"", HFILL}},
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{ &hf_retix_bpdu_forward_delay,
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{ "Forward Delay", "rstp.forward", FT_UINT16, BASE_DEC, NULL, 0x0,
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"", HFILL}},
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};
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static gint *ett[] ={
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&ett_retix_bpdu,
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};
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proto_retix_bpdu = proto_register_protocol("Retix Spanning Tree Protocol", "R-STP", "r-stp");
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proto_register_field_array(proto_retix_bpdu, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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register_dissector("rbpdu", dissect_retix_bpdu, proto_retix_bpdu);
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}
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void
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proto_reg_handoff_retix_bpdu(void)
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{
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}
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