From 1b62aa5a79d58cc2d1e528de20de7fdf77765d2e Mon Sep 17 00:00:00 2001
From: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
Date: Wed, 1 Aug 2007 19:19:28 +0200
Subject: [PATCH] consitify the API a bit

---
 src/devices/csma-cd/csma-cd-net-device.cc               | 3 ++-
 src/devices/csma-cd/csma-cd-net-device.h                | 2 +-
 src/devices/point-to-point/point-to-point-net-device.cc | 3 ++-
 src/devices/point-to-point/point-to-point-net-device.h  | 2 +-
 src/node/net-device.cc                                  | 2 +-
 src/node/net-device.h                                   | 4 ++--
 6 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/src/devices/csma-cd/csma-cd-net-device.cc b/src/devices/csma-cd/csma-cd-net-device.cc
index 538625ee5..f522a7e16 100644
--- a/src/devices/csma-cd/csma-cd-net-device.cc
+++ b/src/devices/csma-cd/csma-cd-net-device.cc
@@ -250,8 +250,9 @@ CsmaCdNetDevice::DoNeedsArp (void) const
 }
 
 bool
-CsmaCdNetDevice::SendTo (Packet& p, const Address& dest, uint16_t protocolNumber)
+CsmaCdNetDevice::SendTo (const Packet& packet, const Address& dest, uint16_t protocolNumber)
 {
+  Packet p = packet;
   NS_DEBUG ("CsmaCdNetDevice::SendTo (" << &p << ")");
   NS_DEBUG ("CsmaCdNetDevice::SendTo (): UID is " << p.GetUid () << ")");
 
diff --git a/src/devices/csma-cd/csma-cd-net-device.h b/src/devices/csma-cd/csma-cd-net-device.h
index 05a327127..7bc5b79a5 100644
--- a/src/devices/csma-cd/csma-cd-net-device.h
+++ b/src/devices/csma-cd/csma-cd-net-device.h
@@ -249,7 +249,7 @@ private:
    * \param protocolNumber -- this parameter is not used here
    * \return true if success, false on failure
    */
-  virtual bool SendTo (Packet& p, const Address& dest, uint16_t protocolNumber);
+  virtual bool SendTo (const Packet& p, const Address& dest, uint16_t protocolNumber);
 
   /**
    * Start Sending a Packet Down the Wire.
diff --git a/src/devices/point-to-point/point-to-point-net-device.cc b/src/devices/point-to-point/point-to-point-net-device.cc
index b450421f5..121f9e87e 100644
--- a/src/devices/point-to-point/point-to-point-net-device.cc
+++ b/src/devices/point-to-point/point-to-point-net-device.cc
@@ -102,9 +102,10 @@ void PointToPointNetDevice::SetInterframeGap(const Time& t)
   m_tInterframeGap = t;
 }
 
-bool PointToPointNetDevice::SendTo (Packet& p, const Address& dest, 
+bool PointToPointNetDevice::SendTo (const Packet& packet, const Address& dest, 
                                     uint16_t protocolNumber)
 {
+  Packet p = packet;
   NS_DEBUG ("PointToPointNetDevice::SendTo (" << &p << ", " << &dest << ")");
   NS_DEBUG ("PointToPointNetDevice::SendTo (): UID is " << p.GetUid () << ")");
 
diff --git a/src/devices/point-to-point/point-to-point-net-device.h b/src/devices/point-to-point/point-to-point-net-device.h
index 77a55a8dc..06b472650 100644
--- a/src/devices/point-to-point/point-to-point-net-device.h
+++ b/src/devices/point-to-point/point-to-point-net-device.h
@@ -212,7 +212,7 @@ private:
    * @param protocolNumber Protocol Number used to find protocol touse
    * @returns true if success, false on failure
    */
-  virtual bool SendTo (Packet& p, const Address& dest, 
+  virtual bool SendTo (const Packet& p, const Address& dest, 
                        uint16_t protocolNumber);
   /**
    * Start Sending a Packet Down the Wire.
diff --git a/src/node/net-device.cc b/src/node/net-device.cc
index 4fa2e8d51..1ffe6d4b1 100644
--- a/src/node/net-device.cc
+++ b/src/node/net-device.cc
@@ -171,7 +171,7 @@ NetDevice::DisablePointToPoint (void)
 
 // Receive packet from above
 bool 
-NetDevice::Send(Packet& p, const Address& dest, uint16_t protocolNumber)
+NetDevice::Send(const Packet& p, const Address& dest, uint16_t protocolNumber)
 {
   if (m_isUp)
     {
diff --git a/src/node/net-device.h b/src/node/net-device.h
index dd590f39c..315f16033 100644
--- a/src/node/net-device.h
+++ b/src/node/net-device.h
@@ -158,7 +158,7 @@ public:
    * 
    * \return whether the Send operation succeeded 
    */
-  bool Send(Packet& p, const Address& dest, uint16_t protocolNumber);
+  bool Send(const Packet& p, const Address& dest, uint16_t protocolNumber);
   /**
    * \returns the node base class which contains this network
    *          interface.
@@ -274,7 +274,7 @@ public:
    * method.  When the link is Up, this method is invoked to ask 
    * subclasses to forward packets. Subclasses MUST override this method.
    */
-  virtual bool SendTo (Packet& p, const Address &dest, uint16_t protocolNumber) = 0;
+  virtual bool SendTo (const Packet& p, const Address &dest, uint16_t protocolNumber) = 0;
   /**
    * \returns true if this NetDevice needs the higher-layers
    *          to perform ARP over it, false otherwise.