1 files changed, 114 insertions, 0 deletions
diff --git a/epan/dissectors/packet-retix-bpdu.c b/epan/dissectors/packet-retix-bpdu.c
new file mode 100644
index 00000000..81a21c3c
--- /dev/null
+++ b/epan/dissectors/packet-retix-bpdu.c
@@ -0,0 +1,114 @@
+/* packet-retix-bpdu.c
+ * Routines for BPDU (Retix Spanning Tree Protocol) disassembly
+ *
+ * Copyright 2005 Giles Scott (gscott <AT> arubanetworks dot com>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#if 0
+#endif
+#include <epan/packet.h>
+#if 0
+#include <epan/llcsaps.h>
+#include <epan/ppptypes.h>
+#include <epan/chdlctypes.h>
+#endif
+#include <epan/addr_resolv.h>
+
+void proto_register_retix_bpdu(void);
+
+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 it's 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 int
+dissect_retix_bpdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+  proto_tree *retix_bpdu_tree;
+  proto_tree *ti;
+
+  col_set_str(pinfo->cinfo, COL_PROTOCOL, "R-STP");
+
+  ti = proto_tree_add_item(tree, proto_retix_bpdu, tvb, 0, -1, ENC_NA);
+  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, ENC_NA);
+
+  proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_bridge_mac, tvb, 10, 6, ENC_NA);
+  col_add_fstr(pinfo->cinfo, COL_INFO, "Bridge MAC %s", tvb_ether_to_str(pinfo->pool, tvb, 10));
+
+  proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_max_age, tvb, 20, 2, ENC_BIG_ENDIAN);
+  proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_hello_time, tvb, 22, 2, ENC_BIG_ENDIAN);
+  proto_tree_add_item(retix_bpdu_tree, hf_retix_bpdu_forward_delay, tvb, 24, 2, ENC_BIG_ENDIAN);
+
+  return tvb_captured_length(tvb);
+}
+
+
+void
+proto_register_retix_bpdu(void)
+{
+  static hf_register_info hf[] = {
+    { &hf_retix_bpdu_root_mac,
+    { "Root MAC",  "r-stp.root.hw", FT_ETHER, BASE_NONE, NULL, 0x0,
+    NULL, HFILL}},
+
+    { &hf_retix_bpdu_bridge_mac,
+    { "Bridge MAC", "r-stp.bridge.hw", FT_ETHER, BASE_NONE, NULL, 0x0,
+    NULL, HFILL}},
+
+    { &hf_retix_bpdu_max_age,
+    { "Max Age", "r-stp.maxage", FT_UINT16, BASE_DEC, NULL, 0x0,
+    NULL, HFILL}},
+
+    { &hf_retix_bpdu_hello_time,
+    { "Hello Time", "r-stp.hello", FT_UINT16, BASE_DEC, NULL, 0x0,
+    NULL, HFILL}},
+
+    { &hf_retix_bpdu_forward_delay,
+    { "Forward Delay", "r-stp.forward", FT_UINT16, BASE_DEC, NULL, 0x0,
+    NULL, 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);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local Variables:
+ * c-basic-offset: 2
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set shiftwidth=2 tabstop=8 expandtab:
+ * :indentSize=2:tabSize=8:noTabs=true:
+ */