Coverage Report

Created: 2026-09-28 06:52

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/wireshark/epan/dissectors/packet-retix-bpdu.c
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/* packet-retix-bpdu.c
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 * Routines for BPDU (Retix Spanning Tree Protocol) disassembly
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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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 * Wireshark - Network traffic analyzer
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 * By Gerald Combs <gerald@wireshark.org>
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 * Copyright 1998 Gerald Combs
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 *
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 * SPDX-License-Identifier: GPL-2.0-or-later
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 */
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/addr_resolv.h>
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void proto_register_retix_bpdu(void);
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static int ett_retix_bpdu;
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static int proto_retix_bpdu;
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static int hf_retix_bpdu_root_mac;
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static int hf_retix_bpdu_bridge_mac;
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static int hf_retix_bpdu_max_age;
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static int hf_retix_bpdu_hello_time;
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static int hf_retix_bpdu_forward_delay;
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/* I don't have the spec's for this protcol so it's 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 int
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dissect_retix_bpdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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  proto_tree *retix_bpdu_tree;
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  proto_tree *ti;
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  col_set_str(pinfo->cinfo, COL_PROTOCOL, "R-STP");
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  ti = proto_tree_add_item(tree, proto_retix_bpdu, tvb, 0, -1, ENC_NA);
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  retix_bpdu_tree = proto_item_add_subtree(ti, ett_retix_bpdu);
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  proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_root_mac, tvb, 0, 6, ENC_NA);
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  proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_bridge_mac, tvb, 10, 6, ENC_NA);
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  col_add_fstr(pinfo->cinfo, COL_INFO, "Bridge MAC %s", tvb_ether_to_str(pinfo->pool, tvb, 10));
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  proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_max_age, tvb, 20, 2, ENC_BIG_ENDIAN);
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  proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_hello_time, tvb, 22, 2, ENC_BIG_ENDIAN);
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  proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_forward_delay, tvb, 24, 2, ENC_BIG_ENDIAN);
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  return tvb_captured_length(tvb);
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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",  "r-stp.root.hw", FT_ETHER, BASE_NONE, NULL, 0x0,
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    NULL, HFILL}},
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    { &hf_retix_bpdu_bridge_mac,
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    { "Bridge MAC", "r-stp.bridge.hw", FT_ETHER, BASE_NONE, NULL, 0x0,
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    NULL, HFILL}},
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    { &hf_retix_bpdu_max_age,
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    { "Max Age", "r-stp.maxage", FT_UINT16, BASE_DEC, NULL, 0x0,
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    NULL, HFILL}},
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    { &hf_retix_bpdu_hello_time,
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    { "Hello Time", "r-stp.hello", FT_UINT16, BASE_DEC, NULL, 0x0,
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    NULL, HFILL}},
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    { &hf_retix_bpdu_forward_delay,
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    { "Forward Delay", "r-stp.forward", FT_UINT16, BASE_DEC, NULL, 0x0,
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    NULL, HFILL}},
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  };
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  static int *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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/*
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 * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
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 *
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 * Local Variables:
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 * c-basic-offset: 2
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 * tab-width: 8
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 * indent-tabs-mode: nil
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 * End:
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 *
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 * ex: set shiftwidth=2 tabstop=8 expandtab:
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 * :indentSize=2:tabSize=8:noTabs=true:
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 */