[Bug 827] promiscuous mode for wifi

src/wifi/model/mac-low.cc

@@ -366,6 +366,7 @@ MacLow::MacLow ()
   NS_LOG_FUNCTION (this);
   m_lastNavDuration = Seconds (0);
   m_lastNavStart = Seconds (0);
+  m_promisc = false;
 }
 
 MacLow::~MacLow ()
@@ -522,6 +523,11 @@ MacLow::SetBssid (Mac48Address bssid)
 {
   m_bssid = bssid;
 }
+void
+MacLow::SetPromisc (void)
+{
+  m_promisc = true;
+}
 Mac48Address
 MacLow::GetAddress (void) const
 {
@@ -893,6 +899,14 @@ MacLow::ReceiveOk (Ptr<Packet> packet, double rxSnr, WifiMode txMode, WifiPreamb
           // DROP
         }
     }
+  else if (m_promisc)
+    {
+      NS_ASSERT (hdr.GetAddr1 () != m_self);
+      if (hdr.IsData ())
+        {
+          goto rxPacket;
+        }
+    }
   else
     {
       //NS_LOG_DEBUG_VERBOSE ("rx not-for-me from %d", GetSource (packet));

src/wifi/model/mac-low.h

@@ -388,6 +388,7 @@ public:
   void SetSlotTime (Time slotTime);
   void SetPifs (Time pifs);
   void SetBssid (Mac48Address ad);
+  void SetPromisc (void);
   Mac48Address GetAddress (void) const;
   Time GetAckTimeout (void) const;
   Time GetBasicBlockAckTimeout () const;
@@ -632,6 +633,8 @@ private:
   Time m_lastNavStart;
   Time m_lastNavDuration;
 
+  bool m_promisc;
+
   // Listerner needed to monitor when a channel switching occurs.
   class PhyMacLowListener * m_phyMacLowListener;
 

src/wifi/model/regular-wifi-mac.cc

@@ -390,6 +390,12 @@ RegularWifiMac::GetBssid (void) const
   return m_low->GetBssid ();
 }
 
+void
+RegularWifiMac::SetPromisc (void)
+{
+  m_low->SetPromisc ();
+}
+
 void
 RegularWifiMac::Enqueue (Ptr<const Packet> packet,
                          Mac48Address to, Mac48Address from)

src/wifi/model/regular-wifi-mac.h

@@ -130,6 +130,14 @@ public:
    * \returns the bssid of the network this device belongs to.
    */
   virtual Mac48Address GetBssid (void) const;
+  /**
+   * \brief Sets the interface in promiscuous mode.
+   *
+   * Enables promiscuous mode on the interface. Note that any further
+   * filtering on the incoming frame path may affect the overall
+   * behavior.
+   */
+  virtual void SetPromisc (void);
 
   /**
    * \param packet the packet to send.

src/wifi/model/wifi-mac.h

@@ -133,6 +133,14 @@ public:
    * \returns the bssid of the network this device belongs to.
    */
   virtual Mac48Address GetBssid (void) const = 0;
+  /**
+   * \brief Sets the interface in promiscuous mode.
+   *
+   * Enables promiscuous mode on the interface. Note that any further
+   * filtering on the incoming frame path may affect the overall
+   * behavior.
+   */
+  virtual void SetPromisc (void) = 0;
 
   /**
    * \param packet the packet to send.

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

@@ -356,6 +356,7 @@ void
 WifiNetDevice::SetPromiscReceiveCallback (PromiscReceiveCallback cb)
 {
   m_promiscRx = cb;
+  m_mac->SetPromisc();
 }
 
 bool