From 4394583f3a016068f330caf9727b4396567be184 Mon Sep 17 00:00:00 2001
From: Natale Patriciello <natale.patriciello@gmail.com>
Date: Wed, 27 Feb 2019 10:33:56 +0100
Subject: [PATCH] lte pdcp: Do not use a PacketTag to store the arrival time

---
 src/lte/model/lte-pdcp.cc | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/lte/model/lte-pdcp.cc b/src/lte/model/lte-pdcp.cc
index 3f7acd32f..07b652bd7 100644
--- a/src/lte/model/lte-pdcp.cc
+++ b/src/lte/model/lte-pdcp.cc
@@ -178,6 +178,9 @@ LtePdcp::DoTransmitPdcpSdu (Ptr<Packet> p)
 {
   NS_LOG_FUNCTION (this << m_rnti << (uint32_t) m_lcid << p->GetSize ());
 
+  // Sender timestamp
+  PdcpTag pdcpTag (Simulator::Now ());
+
   LtePdcpHeader pdcpHeader;
   pdcpHeader.SetSequenceNumber (m_txSequenceNumber);
 
@@ -191,10 +194,8 @@ LtePdcp::DoTransmitPdcpSdu (Ptr<Packet> p)
 
   NS_LOG_LOGIC ("PDCP header: " << pdcpHeader);
   p->AddHeader (pdcpHeader);
+  p->AddByteTag (pdcpTag, 1, pdcpHeader.GetSerializedSize ());
 
-  // Sender timestamp
-  PdcpTag pdcpTag (Simulator::Now ());
-  p->AddPacketTag (pdcpTag);
   m_txPdu (m_rnti, m_lcid, p->GetSize ());
 
   LteRlcSapProvider::TransmitPdcpPduParameters params;
@@ -213,8 +214,7 @@ LtePdcp::DoReceivePdu (Ptr<Packet> p)
   // Receiver timestamp
   PdcpTag pdcpTag;
   Time delay;
-  NS_ASSERT_MSG (p->PeekPacketTag (pdcpTag), "PdcpTag is missing");
-  p->RemovePacketTag (pdcpTag);
+  p->FindFirstMatchingByteTag (pdcpTag);
   delay = Simulator::Now() - pdcpTag.GetSenderTimestamp ();
   m_rxPdu(m_rnti, m_lcid, p->GetSize (), delay.GetNanoSeconds ());