--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/wifi/model/mpdu-aggregator.cc Wed Jan 28 10:11:32 2015 -0800
@@ -0,0 +1,77 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013
+ *
+ * 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: Ghada Badawy <gbadawy@gmail.com>
+ */
+#include "ns3/log.h"
+
+#include "mpdu-aggregator.h"
+#include "wifi-mac-header.h"
+
+NS_LOG_COMPONENT_DEFINE ("MpduAggregator");
+
+namespace ns3 {
+
+NS_OBJECT_ENSURE_REGISTERED (MpduAggregator);
+
+TypeId
+MpduAggregator::GetTypeId (void)
+{
+ static TypeId tid = TypeId ("ns3::MpduAggregator")
+ .SetParent<Object> ()
+ ;
+ return tid;
+}
+
+MpduAggregator::DeaggregatedMpdus
+MpduAggregator::Deaggregate (Ptr<Packet> aggregatedPacket)
+{
+ NS_LOG_FUNCTION_NOARGS ();
+ DeaggregatedMpdus set;
+
+ AmpduSubframeHeader hdr;
+ Ptr<Packet> extractedMpdu = Create<Packet> ();
+ uint32_t maxSize = aggregatedPacket->GetSize ();
+ uint16_t extractedLength;
+ uint32_t padding;
+ uint32_t deserialized = 0;
+
+ while (deserialized < maxSize)
+ {
+ deserialized += aggregatedPacket->RemoveHeader (hdr);
+ extractedLength = hdr.GetLength ();
+ extractedMpdu = aggregatedPacket->CreateFragment (0, static_cast<uint32_t> (extractedLength));
+ aggregatedPacket->RemoveAtStart (extractedLength);
+ deserialized += extractedLength;
+
+ padding = (4 - (extractedLength % 4 )) % 4;
+
+ if (padding > 0 && deserialized < maxSize)
+ {
+ aggregatedPacket->RemoveAtStart (padding);
+ deserialized += padding;
+ }
+
+ std::pair<Ptr<Packet>, AmpduSubframeHeader> packetHdr (extractedMpdu, hdr);
+ set.push_back (packetHdr);
+ }
+ NS_LOG_INFO ("Deaggreated A-MPDU: extracted " << set.size () << " MPDUs");
+ return set;
+}
+
+
+} // namespace ns3