From cfd3c98d33f9ecb1bee20776032893359ddf2288 Mon Sep 17 00:00:00 2001
From: Tommaso Pecorella <tommaso.pecorella@unifi.it>
Date: Tue, 28 Jun 2022 14:07:19 -0500
Subject: [PATCH] lte: (fixes #689) fix RNG seed for deactivation bearer test

---
 src/lte/test/lte-test-deactivate-bearer.cc | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/lte/test/lte-test-deactivate-bearer.cc b/src/lte/test/lte-test-deactivate-bearer.cc
index 65f58cc46..b7cbad4ba 100644
--- a/src/lte/test/lte-test-deactivate-bearer.cc
+++ b/src/lte/test/lte-test-deactivate-bearer.cc
@@ -46,6 +46,7 @@
 #include <ns3/lte-ue-phy.h>
 #include <ns3/boolean.h>
 #include <ns3/enum.h>
+#include <ns3/rng-seed-manager.h>
 
 #include "ns3/point-to-point-epc-helper.h"
 #include "ns3/network-module.h"
@@ -128,6 +129,11 @@ LenaDeactivateBearerTestCase::~LenaDeactivateBearerTestCase ()
 void
 LenaDeactivateBearerTestCase::DoRun (void)
 {
+  uint32_t originalSeed = RngSeedManager::GetSeed ();
+  uint32_t originalRun = RngSeedManager::GetRun ();
+  RngSeedManager::SetSeed (1);
+  RngSeedManager::SetRun (1);
+
   if (!m_errorModelEnabled)
     {
       Config::SetDefault ("ns3::LteSpectrumPhy::CtrlErrorModelEnabled", BooleanValue (false));
@@ -196,9 +202,14 @@ LenaDeactivateBearerTestCase::DoRun (void)
   // Create Devices and install them in the Nodes (eNB and UE)
   NetDeviceContainer enbDevs;
   NetDeviceContainer ueDevs;
+  int64_t stream = 1;
+
   lteHelper->SetSchedulerType ("ns3::PssFfMacScheduler");
   enbDevs = lteHelper->InstallEnbDevice (enbNodes);
+  stream += lteHelper->AssignStreams (enbDevs, stream);
+
   ueDevs = lteHelper->InstallUeDevice (ueNodes);
+  stream += lteHelper->AssignStreams (ueDevs, stream);
 
   Ptr<LteEnbNetDevice> lteEnbDev = enbDevs.Get (0)->GetObject<LteEnbNetDevice> ();
   Ptr<LteEnbPhy> enbPhy = lteEnbDev->GetPhy ();
@@ -346,5 +357,8 @@ LenaDeactivateBearerTestCase::DoRun (void)
     }
 
   Simulator::Destroy ();
+
+  RngSeedManager::SetSeed (originalSeed);
+  RngSeedManager::SetRun (originalRun);
 }
 }