--- a/src/devices/wifi/mac-low.cc	Tue Sep 02 12:13:24 2008 -0700
+++ b/src/devices/wifi/mac-low.cc	Tue Sep 02 12:36:37 2008 -0700
@@ -377,6 +377,16 @@
 {
   m_sifs = sifs;
 }
+void 
+MacLow::SetSlotTime (Time slotTime)
+{
+  m_slotTime = slotTime;
+}
+void 
+MacLow::SetPifs (Time pifs)
+{
+  m_pifs = pifs;
+}
 Mac48Address 
 MacLow::GetAddress (void) const
 {
@@ -397,6 +407,16 @@
 {
   return m_sifs;
 }
+Time 
+MacLow::GetSlotTime (void) const
+{
+  return m_slotTime;
+}
+Time 
+MacLow::GetPifs (void) const
+{
+  return m_pifs;
+}
 
 void 
 MacLow::SetRxCallback (Callback<void,Ptr<Packet>,const WifiMacHeader *> callback)
@@ -651,16 +671,6 @@
   cts.SetType (WIFI_MAC_CTL_CTS);
   return cts.GetSize () + 4;
 }
-Time
-MacLow::GetSlotTime (void) const
-{
-  return m_mac->GetSlot ();
-}
-Time
-MacLow::GetPifs (void) const
-{
-  return m_mac->GetPifs ();
-}
 uint32_t 
 MacLow::GetSize (Ptr<const Packet> packet, const WifiMacHeader *hdr) const
 {