/*

 * Copyright (c) 2010 TELEMATICS LAB, DEE - Politecnico di Bari

 *

 * 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: Giuseppe Piro  <g.piro@poliba.it>

 */

#include "ns3/llc-snap-header.h"

#include "ns3/simulator.h"

#include "ns3/callback.h"

#include "ns3/node.h"

#include "ns3/packet.h"

#include "lte-net-device.h"

#include "ns3/packet-burst.h"

#include "ns3/uinteger.h"

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

#include "ns3/pointer.h"

#include "ns3/enum.h"

#include "radio-bearer-instance.h"

#include "amc-module.h"

#include "rrc-entity.h"

#include "rlc-entity.h"

#include "lte-mac-header.h"

#include "ns3/ipv4-header.h"

NS_LOG_COMPONENT_DEFINE ("LteNetDevice");

namespace ns3 {

NS_OBJECT_ENSURE_REGISTERED ( LteNetDevice);

TypeId LteNetDevice::GetTypeId (void)

{

  static TypeId

    tid =

    TypeId ("ns3::LteNetDevice")

    .SetParent<NetDevice> ()

    .AddAttribute ("Mtu", "The MAC-level Maximum Transmission Unit",

                   UintegerValue (1500),

                   MakeUintegerAccessor (&LteNetDevice::SetMtu,

                                         &LteNetDevice::GetMtu),

                   MakeUintegerChecker<uint16_t> (0,MAX_MSDU_SIZE))

    .AddAttribute ("Phy",

                   "The PHY layer attached to this device.",

                   PointerValue (),

                   MakePointerAccessor (&LteNetDevice::GetPhy, &LteNetDevice::SetPhy),

                   MakePointerChecker<LtePhy> ())

  ;

  return tid;

}

LteNetDevice::LteNetDevice (void)

{

  NS_LOG_FUNCTION (this);

}

LteNetDevice::~LteNetDevice (void)

{

  NS_LOG_FUNCTION (this);

}

void

LteNetDevice::DoDispose (void)

{

  NS_LOG_FUNCTION (this);

  m_phy->Dispose ();

  m_phy = 0;

  m_node = 0;

  m_rrcEntity->Dispose ();

  m_rrcEntity = 0;

  m_phyMacTxStartCallback = MakeNullCallback< bool, Ptr<Packet> > ();

  NetDevice::DoDispose ();

}

Ptr<Channel>

LteNetDevice::GetChannel (void) const

{

  NS_LOG_FUNCTION (this);

  return GetPhy ()->GetDownlinkSpectrumPhy ()->GetChannel ();

}

void

LteNetDevice::SetPhy (Ptr<LtePhy> phy)

{

  NS_LOG_FUNCTION (this << phy);

  m_phy = phy;

}

Ptr<LtePhy>

LteNetDevice::GetPhy (void) const

{

  NS_LOG_FUNCTION (this);

  return m_phy;

}

void

LteNetDevice::SetRrcEntity (Ptr<RrcEntity> rrc)

{

  NS_LOG_FUNCTION (this << rrc);

  m_rrcEntity = rrc;

}

Ptr<RrcEntity>

LteNetDevice::GetRrcEntity (void)

{

  NS_LOG_FUNCTION (this);

  return m_rrcEntity;

}

void

LteNetDevice::SetAddress (Address address)

{

  NS_LOG_FUNCTION (this << address);

  m_address = Mac48Address::ConvertFrom (address);

}

Address

LteNetDevice::GetAddress (void) const

{

  NS_LOG_FUNCTION (this);

  return m_address;

}

void

LteNetDevice::SetNode (Ptr<Node> node)

{

  NS_LOG_FUNCTION (this << node);

  m_node = node;

}

Ptr<Node>

LteNetDevice::GetNode (void) const

{

  NS_LOG_FUNCTION (this);

  return m_node;

}

void

LteNetDevice::SetReceiveCallback (ReceiveCallback cb)

{

  NS_LOG_FUNCTION (this);

  m_rxCallback = cb;

}

void

LteNetDevice::ForwardUp (Ptr<Packet> packet, const Mac48Address &source, const Mac48Address &dest)

{

}

void

LteNetDevice::ForwardUp (Ptr<Packet> packet)

{

  NS_LOG_FUNCTION (this << packet);

  m_macRxTrace (packet);

  LteMacHeader header;

  packet->RemoveHeader (header);

  NS_LOG_LOGIC ("packet " << header.GetSource () << " --> " << header.GetDestination () << " (here: " << m_address << ")");

  LlcSnapHeader llc;

  packet->RemoveHeader (llc);

  m_rxCallback (this, packet, llc.GetType (), header.GetSource ());

}

bool

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

{

  NS_LOG_FUNCTION (packet << dest << protocolNumber);

  return SendFrom (packet, m_address, dest, protocolNumber);

}

bool

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

{

  NS_LOG_FUNCTION (packet << source << dest << protocolNumber);

  LlcSnapHeader llcHdr;

  llcHdr.SetType (protocolNumber);

  packet->AddHeader (llcHdr);

  Mac48Address from = Mac48Address::ConvertFrom (source);

  Mac48Address to = Mac48Address::ConvertFrom (dest);

  LteMacHeader header;

  header.SetSource (from);

  header.SetDestination (to);

  packet->AddHeader (header);

  // m_macTxTrace (packet);

  return DoSend (packet, from, to, protocolNumber);

}

bool

LteNetDevice::SupportsSendFrom (void) const

{

  NS_LOG_FUNCTION (this);

  return false;

}

void

LteNetDevice::SetGenericPhyTxStartCallback (GenericPhyTxStartCallback c)

{

  NS_LOG_FUNCTION (this);

  m_phyMacTxStartCallback = c;

}

void

LteNetDevice::Receive (Ptr<Packet> p)

{

  NS_LOG_FUNCTION (this << p);

  Ptr<Packet> packet = p->Copy ();

  DoReceive (packet);

}

bool

LteNetDevice::SetMtu (const uint16_t mtu)

{

  NS_LOG_FUNCTION (this << mtu);

  if (mtu > MAX_MSDU_SIZE)

    {

      return false;

    }

  m_mtu = mtu;

  return true;

}

uint16_t

LteNetDevice::GetMtu (void) const

{

  NS_LOG_FUNCTION (this);

  return m_mtu;

}

void

LteNetDevice::SetIfIndex (const uint32_t index)

{

  NS_LOG_FUNCTION (this << index);

  m_ifIndex = index;

}

uint32_t

LteNetDevice::GetIfIndex (void) const

{

  NS_LOG_FUNCTION (this);

  return m_ifIndex;

}

bool

LteNetDevice::IsLinkUp (void) const

{

  NS_LOG_FUNCTION (this);

  return m_phy != 0 && m_linkUp;

}

bool

LteNetDevice::IsBroadcast (void) const

{

  NS_LOG_FUNCTION (this);

  return true;

}

Address

LteNetDevice::GetBroadcast (void) const

{

  NS_LOG_FUNCTION (this);

  return Mac48Address::GetBroadcast ();

}

bool

LteNetDevice::IsMulticast (void) const

{

  NS_LOG_FUNCTION (this);

  return false;

}

bool

LteNetDevice::IsPointToPoint (void) const

{

  NS_LOG_FUNCTION (this);

  return false;

}

bool

LteNetDevice::NeedsArp (void) const

{

  NS_LOG_FUNCTION (this);

  return true;

}

bool

LteNetDevice::IsBridge (void) const

{

  NS_LOG_FUNCTION (this);

  return false;

}

Address

LteNetDevice::GetMulticast (Ipv4Address multicastGroup) const

{

  NS_LOG_FUNCTION (this);

  NS_LOG_FUNCTION (multicastGroup);

  Mac48Address ad = Mac48Address::GetMulticast (multicastGroup);

  //

  // Implicit conversion (operator Address ()) is defined for Mac48Address, so

  // use it by just returning the EUI-48 address which is automagically converted

  // to an Address.

  //

  NS_LOG_LOGIC ("multicast address is " << ad);

  return ad;

}

Address

LteNetDevice::GetMulticast (Ipv6Address addr) const

{

  NS_LOG_FUNCTION (this << addr);

  Mac48Address ad = Mac48Address::GetMulticast (addr);

  NS_LOG_LOGIC ("MAC IPv6 multicast address is " << ad);

  return ad;

}

void

LteNetDevice::AddLinkChangeCallback (Callback<void> callback)

{

  NS_LOG_FUNCTION (this);

  m_linkChangeCallbacks.ConnectWithoutContext (callback);

}

void

LteNetDevice::SetPromiscReceiveCallback (PromiscReceiveCallback cb)

{

  NS_LOG_FUNCTION (this);

  m_promiscRxCallback = cb;

}

void

LteNetDevice::SetPacketToSend (Ptr<PacketBurst> p)

{

  m_packetToSend = p;

}

Ptr<PacketBurst>

LteNetDevice::GetPacketToSend (void)

{

  return m_packetToSend;

}

}