From 9b44ce4a9a6c7bfb2e07b4a169ccd842d5705144 Mon Sep 17 00:00:00 2001
From: Richard Whitehouse <github@richardwhiuk.com>
Date: Sun, 17 Apr 2011 22:23:06 +0100
Subject: [PATCH] Add Topology Change Notification BPDU

---
 src/devices/bridge/model/tcn-bpdu-header.cc | 66 +++++++++++++++++++++
 src/devices/bridge/wscript                  |  1 +
 2 files changed, 67 insertions(+)
 create mode 100644 src/devices/bridge/model/tcn-bpdu-header.cc

diff --git a/src/devices/bridge/model/tcn-bpdu-header.cc b/src/devices/bridge/model/tcn-bpdu-header.cc
new file mode 100644
index 0000000..b44918c
--- /dev/null
+++ b/src/devices/bridge/model/tcn-bpdu-header.cc
@@ -0,0 +1,66 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2011 Richard Whitehouse
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * 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
+ *
+ * Author: Richard Whitehouse <ns3@richardwhiuk.com>
+ */
+
+#include "bpdu-header.h"
+#include "ns3/log.h"
+
+NS_LOG_COMPONENT_DEFINE("TcnBpduHeader");
+
+namespace ns3 {
+
+NS_OBJECT_ENSURE_REGISTERED(TcnBpduHeader);
+
+TypeId TcnBpduHeader::GetTypeId (void)
+{
+  static TypeId tid = TypeId ("ns3::TcnBpduHeader")
+    .SetParent<BpduHeader> ()
+    .AddConstructor<TcnBpduHeader> ()
+    ;
+  return tid;
+}
+
+TypeId TcnBpduHeader::GetInstanceTypeId (void) const
+{
+  return GetTypeId ();
+}
+
+void TcnBpduHeader::Print (std::ostream &os) const
+{
+	os << "topology change notification "
+	  ;
+}
+
+uint32_t TcnBpduHeader::GetSerializedSize (void) const
+{
+  /* this is the size of a Tcn BPDU excluding the BPDU Header. */
+  return 0;
+}
+
+void TcnBpduHeader::Serialize (Buffer::Iterator start) const
+{
+
+}
+uint32_t TcnBpduHeader::Deserialize (Buffer::Iterator start)
+{
+  return GetSerializedSize ();
+}
+
+}
+
diff --git a/src/devices/bridge/wscript b/src/devices/bridge/wscript
index 41a246b..2c7acf8 100644
--- a/src/devices/bridge/wscript
+++ b/src/devices/bridge/wscript
@@ -12,6 +12,7 @@ def build(bld):
         'helper/bridge-helper.cc',
 	'model/bpdu-header.cc',
 	'model/configuration-bpdu-header.cc',
+	'model/tcn-bpdu-header.cc',
         ]
     headers = bld.new_task_gen('ns3header')
     headers.module = 'bridge'
-- 
2.34.1