fix valgrind warning

src/devices/wifi/dca-txop.cc

@@ -144,14 +144,14 @@ private:
   DcaTxop *m_txop;
 };
 
-DcaTxop::DcaTxop ()
+DcaTxop::DcaTxop (uint32_t minCw, uint32_t maxCw)
   : m_accessListener (0),
     m_hasCurrent (false),
     m_ssrc (0),
     m_slrc (0)
 {
   m_transmissionListener = new DcaTxop::TransmissionListener (this);
-  m_dcf = new Dcf ();
+  m_dcf = new Dcf (minCw, maxCw);
   m_accessListener = new DcaTxop::AccessListener (this);
   m_dcf->RegisterAccessListener (m_accessListener);
   m_queue = new WifiMacQueue ();

src/devices/wifi/dca-txop.h

@@ -44,7 +44,7 @@ public:
   typedef Callback <void, WifiMacHeader const&> TxOk;
   typedef Callback <void, WifiMacHeader const&> TxFailed;
 
-  DcaTxop ();
+  DcaTxop (uint32_t minCw, uint32_t maxCw);
   ~DcaTxop ();
 
   void SetLow (MacLow *low);

src/devices/wifi/dcf.cc

@@ -43,8 +43,10 @@ DcfAccessListener::~DcfAccessListener ()
 
 
 
-Dcf::Dcf ()
+Dcf::Dcf (uint32_t min, uint32_t max)
   : m_accessTimerEvent (),
+    m_cwMin (min),
+    m_cwMax (max),
     m_backoffStart (MicroSeconds (0)),
     m_backoffLeft (MicroSeconds (0)),
     m_lastNavStart (MicroSeconds (0)),
@@ -700,7 +702,7 @@ DcfTest::ExpectAccessGranted (uint64_t time)
 void 
 DcfTest::StartTest (void)
 {
-  m_dcf = new Dcf ();
+  m_dcf = new Dcf (8, 64);
   TestRandomStream *stream = new TestRandomStream ();
   stream->AddNext (1);
   stream->AddNext (1);
@@ -717,7 +719,6 @@ DcfTest::StartTest (void)
   m_parameters->SetSlotTime (MicroSeconds (1));
   m_dcf->SetDifs (MicroSeconds (3));
   m_dcf->SetEifs (MicroSeconds (4));
-  m_dcf->SetCwBounds (8, 64);
 }
 void 
 DcfTest::EndTest (void)

src/devices/wifi/dcf.h

@@ -56,13 +56,13 @@ public:
 class Dcf
 {
 public:
-  Dcf ();
+  Dcf (uint32_t minCw, uint32_t maxCw);
   ~Dcf ();
 
   void SetParameters (const MacParameters *parameters);
   void SetDifs (Time difs);
   void SetEifs (Time eifs);
-  void SetCwBounds (uint32_t min, uint32_t max);
+  void SetCwBounds (uint32_t minCw, uint32_t maxCw);
   void RegisterAccessListener (DcfAccessListener *listener);
 
   void RequestAccess (void);

src/devices/wifi/wifi-net-device.cc

@@ -144,14 +144,14 @@ WifiNetDevice::Construct (void)
 }
 
 DcaTxop *
-WifiNetDevice::CreateDca (void) const
+WifiNetDevice::CreateDca (uint32_t minCw, uint32_t maxCw) const
 {
-  DcaTxop *dca = new DcaTxop ();
+  DcaTxop *dca = new DcaTxop (minCw, maxCw);
   dca->SetParameters (m_parameters);
   dca->SetTxMiddle (m_txMiddle);
   dca->SetLow (m_low);
   dca->SetPhy (m_phy);
-  // 802.11a
+
   Time difs = m_parameters->GetSifs () + 
     m_parameters->GetSlotTime () + 
     m_parameters->GetSlotTime ();
@@ -159,7 +159,6 @@ WifiNetDevice::CreateDca (void) const
     m_phy->CalculateTxDuration (2+2+6+4, m_phy->GetMode (0), WIFI_PREAMBLE_LONG);
   dca->SetDifs (difs);
   dca->SetEifs (eifs);
-  dca->SetCwBounds (15, 1023);
   dca->SetMaxQueueSize (400);
   dca->SetMaxQueueDelay (Seconds (10));
   return dca;
@@ -226,7 +225,7 @@ AdhocWifiNetDevice::AdhocWifiNetDevice (Ptr<Node> node)
   : WifiNetDevice (node)
 {
   m_ssid = WifiDefaultParameters::GetSsid ();
-  m_dca = CreateDca ();
+  m_dca = CreateDca (15, 1023);
 
   MacHighAdhoc *high = new MacHighAdhoc ();
   high->SetDevice (this);
@@ -277,7 +276,7 @@ NqstaWifiNetDevice::NqstaWifiNetDevice (Ptr<Node> node)
   : WifiNetDevice (node)
 {
   m_ssid = WifiDefaultParameters::GetSsid ();
-  m_dca = CreateDca ();
+  m_dca = CreateDca (15, 1023);
 
   SupportedRates rates;
   for (uint32_t i = 0; i < m_phy->GetNModes (); i++) 
@@ -355,7 +354,7 @@ NqapWifiNetDevice::NqapWifiNetDevice (Ptr<Node> node)
 {
   m_ssid = WifiDefaultParameters::GetSsid ();
 
-  m_dca = CreateDca ();
+  m_dca = CreateDca (15, 1023);
 
   SupportedRates rates;
   for (uint32_t i = 0; i < m_phy->GetNModes (); i++) 

src/devices/wifi/wifi-net-device.h

@@ -71,7 +71,7 @@ private:
 protected:
   WifiNetDevice (Ptr<Node> node);
   void DoForwardUp (Packet packet, const Mac48Address &from);
-  DcaTxop *CreateDca (void) const;
+  DcaTxop *CreateDca (uint32_t minCw, uint32_t maxCw) const;
 
   Ptr<WifiChannel> m_channel;
   WifiPhy *m_phy;