From e8a4830bad99ddba90062c65e324d0f52fe8dd7d Mon Sep 17 00:00:00 2001 From: Ronnie Sahlberg Date: Tue, 15 Feb 2005 21:01:51 +0000 Subject: new protocol from Giles Scott : Retix spanning tree protocol svn path=/trunk/; revision=13408 --- epan/dissectors/packet-retix-bpdu.c | 135 ++++++++++++++++++++++++++++++++++++ 1 file changed, 135 insertions(+) create mode 100644 epan/dissectors/packet-retix-bpdu.c (limited to 'epan/dissectors/packet-retix-bpdu.c') diff --git a/epan/dissectors/packet-retix-bpdu.c b/epan/dissectors/packet-retix-bpdu.c new file mode 100644 index 0000000000..19180954e0 --- /dev/null +++ b/epan/dissectors/packet-retix-bpdu.c @@ -0,0 +1,135 @@ +/* packet-retix-bpdu.c + * Routines for BPDU (Retix Spanning Tree Protocol) disassembly + * + * + * Copyright 2005 Giles Scott (gscott arubanetworks dot com> + * + * Ethereal - Network traffic analyzer + * By Gerald Combs + * 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 + +#include +#include +#include +#include +#include "llcsaps.h" +#include "ppptypes.h" +#include "chdlctypes.h" +#include + +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 char *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, 12, 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, 2, 6, FALSE); + + proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_bridge_mac, tvb, 12, 6, FALSE); + + proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_max_age, tvb, 22, 2, FALSE); + proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_hello_time, tvb, 24, 2, FALSE); + proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_forward_delay, tvb, 26, 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) +{ + dissector_handle_t retix_bpdu_handle; + + retix_bpdu_handle = find_dissector("rbpdu"); + dissector_add("llc.dsap", 0x80, retix_bpdu_handle); +} -- cgit v1.2.3