/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2009 IITP RAS

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Author: Kirill Andreev <andreev@iitp.ru>

 */

#include "flame-protocol-mac.h"

#include "flame-protocol.h"

#include "flame-header.h"

#include "ns3/log.h"

namespace ns3 {

namespace flame {

FlameProtocolMac::FlameProtocolMac (Ptr<FlameProtocol> protocol) :

  m_protocol (protocol)

{

}

FlameProtocolMac::~FlameProtocolMac ()

{

  m_protocol = 0;

  m_parent = 0;

}

void

FlameProtocolMac::SetParent (Ptr<MeshWifiInterfaceMac> parent)

{

  m_parent = parent;

}

bool

FlameProtocolMac::Receive (Ptr<Packet> packet, const WifiMacHeader & header)

{

  if (!header.IsData ())

    {

      return true;

    }

  FlameTag tag;

  if (packet->PeekPacketTag (tag))

    {

      NS_FATAL_ERROR ("FLAME tag is not supposed to be received by network");

    }

  tag.receiver = header.GetAddr1 ();

  tag.transmitter = header.GetAddr2 ();

  if (tag.receiver == Mac48Address::GetBroadcast ())

    {

      m_stats.rxBroadcast++;

    }

  else

    {

      m_stats.rxUnicast++;

    }

  m_stats.rxBytes += packet->GetSize ();

  packet->AddPacketTag (tag);

  return true;

}

bool

FlameProtocolMac::UpdateOutcomingFrame (Ptr<Packet> packet, WifiMacHeader & header, Mac48Address from,

                                        Mac48Address to)

{

  if (!header.IsData ())

    {

      return true;

    }

  FlameTag tag;

  if (!packet->RemovePacketTag (tag))

    {

      NS_FATAL_ERROR ("FLAME tag must exist here");

    }

  header.SetAddr1 (tag.receiver);

  if (tag.receiver == Mac48Address::GetBroadcast ())

    {

      m_stats.txBroadcast++;

    }

  else

    {

      m_stats.txUnicast++;

    }

  m_stats.txBytes += packet->GetSize ();

  return true;

}

uint16_t

FlameProtocolMac::GetChannelId () const

{

  return m_parent->GetFrequencyChannel ();

}

FlameProtocolMac::Statistics::Statistics () :

  txUnicast (0), txBroadcast (0), txBytes (0), rxUnicast (0), rxBroadcast (0), rxBytes (0)

{

}

void

FlameProtocolMac::Statistics::Print (std::ostream &os) const

{

  os << "<Statistics "

  "txUnicast=\"" << txUnicast << "\" "

  "txBroadcast=\"" << txBroadcast << "\" "

  "txBytes=\"" << txBytes << "\" "

  "rxUnicast=\"" << rxUnicast << "\" "

  "rxBroadcast=\"" << rxBroadcast << "\" "

  "rxBytes=\"" << rxBytes << "\"/>" << std::endl;

}

void

FlameProtocolMac::Report (std::ostream & os) const

{

  os << "<FlameProtocolMac" << std::endl << 

  "address =\"" << m_parent->GetAddress () << "\">" << std::endl;

  m_stats.Print (os);

  os << "</FlameProtocolMac>" << std::endl;

}

void

FlameProtocolMac::ResetStats ()

{

  m_stats = Statistics ();

}

} // namespace flame

} // namespace ns3