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

/*

 * Copyright (c) 2008 INRIA

 *

 * 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: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

 */

#include "simple-net-device.h"

#include "simple-channel.h"

#include "node.h"

#include "ns3/packet.h"

#include "ns3/log.h"

#include "ns3/pointer.h"

#include "ns3/error-model.h"

#include "ns3/trace-source-accessor.h"

NS_LOG_COMPONENT_DEFINE ("SimpleNetDevice");

namespace ns3 {

TypeId 

SimpleNetDevice::GetTypeId (void)

{

  static TypeId tid = TypeId ("ns3::SimpleNetDevice")

    .SetParent<NetDevice> ()

    .AddConstructor<SimpleNetDevice> ()

    .AddAttribute ("ReceiveErrorModel",

                   "The receiver error model used to simulate packet loss",

                   PointerValue (),

                   MakePointerAccessor (&SimpleNetDevice::m_receiveErrorModel),

                   MakePointerChecker<ErrorModel> ())

    .AddTraceSource ("PhyRxDrop",

                     "Trace source indicating a packet has been dropped by the device during reception",

                     MakeTraceSourceAccessor (&SimpleNetDevice::m_phyRxDropTrace))

    ;

  return tid;

}

SimpleNetDevice::SimpleNetDevice ()

  : m_channel (0),

    m_node (0),

    m_mtu (0xffff),

    m_ifIndex (0)

{}

void 

SimpleNetDevice::Receive (Ptr<Packet> packet, uint16_t protocol, 

			  Mac48Address to, Mac48Address from)

{

  NS_LOG_FUNCTION (packet << protocol << to << from);

  NetDevice::PacketType packetType;

  if (m_receiveErrorModel && m_receiveErrorModel->IsCorrupt (packet) )

    {

      m_phyRxDropTrace (packet);

      return;

    }

  if (to == m_address)

    {

      packetType = NetDevice::PACKET_HOST;

    }

  else if (to.IsBroadcast ())

    {

      packetType = NetDevice::PACKET_HOST;

    }

  else if (to.IsGroup ())

    {

      packetType = NetDevice::PACKET_MULTICAST;

    }

  else 

    {

      packetType = NetDevice::PACKET_OTHERHOST;

    }

  m_rxCallback (this, packet, protocol, from);

  if (!m_promiscCallback.IsNull ())

    {

      m_promiscCallback (this, packet, protocol, from, to, packetType);

    }

}

void 

SimpleNetDevice::SetChannel (Ptr<SimpleChannel> channel)

{

  m_channel = channel;

  m_channel->Add (this);

}

void

SimpleNetDevice::SetReceiveErrorModel (Ptr<ErrorModel> em)

{

  m_receiveErrorModel = em;

}

void 

SimpleNetDevice::SetIfIndex(const uint32_t index)

{

  m_ifIndex = index;

}

uint32_t 

SimpleNetDevice::GetIfIndex(void) const

{

  return m_ifIndex;

}

Ptr<Channel> 

SimpleNetDevice::GetChannel (void) const

{

  return m_channel;

}

void

SimpleNetDevice::SetAddress (Address address)

{

  m_address = Mac48Address::ConvertFrom(address);

}

Address 

SimpleNetDevice::GetAddress (void) const

{

  //

  // Implicit conversion from Mac48Address to Address

  //

  return m_address;

}

bool 

SimpleNetDevice::SetMtu (const uint16_t mtu)

{

  m_mtu = mtu;

  return true;

}

uint16_t 

SimpleNetDevice::GetMtu (void) const

{

  return m_mtu;

}

bool 

SimpleNetDevice::IsLinkUp (void) const

{

  return true;

}

void 

SimpleNetDevice::AddLinkChangeCallback (Callback<void> callback)

{}

bool 

SimpleNetDevice::IsBroadcast (void) const

{

  return true;

}

Address

SimpleNetDevice::GetBroadcast (void) const

{

  return Mac48Address ("ff:ff:ff:ff:ff:ff");

}

bool 

SimpleNetDevice::IsMulticast (void) const

{

  return false;

}

Address 

SimpleNetDevice::GetMulticast (Ipv4Address multicastGroup) const

{

  return Mac48Address::GetMulticast (multicastGroup);

}

Address SimpleNetDevice::GetMulticast (Ipv6Address addr) const

{

	return Mac48Address::GetMulticast (addr);

}

bool 

SimpleNetDevice::IsPointToPoint (void) const

{

  return false;

}

bool 

SimpleNetDevice::IsBridge (void) const

{

  return false;

}

bool 

SimpleNetDevice::Send(Ptr<Packet> packet, const Address& dest, uint16_t protocolNumber)

{

  NS_LOG_FUNCTION (packet << dest << protocolNumber);

  Mac48Address to = Mac48Address::ConvertFrom (dest);

  m_channel->Send (packet, protocolNumber, to, m_address, this);

  return true;

}

bool 

SimpleNetDevice::SendFrom(Ptr<Packet> packet, const Address& source, const Address& dest, uint16_t protocolNumber)

{

  Mac48Address to = Mac48Address::ConvertFrom (dest);

  Mac48Address from = Mac48Address::ConvertFrom (source);

  m_channel->Send (packet, protocolNumber, to, from, this);

  return true;

}

Ptr<Node> 

SimpleNetDevice::GetNode (void) const

{

  return m_node;

}

void 

SimpleNetDevice::SetNode (Ptr<Node> node)

{

  m_node = node;

}

bool 

SimpleNetDevice::NeedsArp (void) const

{

  return false;

}

void 

SimpleNetDevice::SetReceiveCallback (NetDevice::ReceiveCallback cb)

{

  m_rxCallback = cb;

}

void

SimpleNetDevice::DoDispose (void)

{

  m_channel = 0;

  m_node = 0;

  m_receiveErrorModel = 0;

  NetDevice::DoDispose ();

}

void

SimpleNetDevice::SetPromiscReceiveCallback (PromiscReceiveCallback cb)

{

  m_promiscCallback = cb;

}

bool

SimpleNetDevice::SupportsSendFrom (void) const

{

  return true;

}

} // namespace ns3