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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2011 University of California, Los Angeles
*
* 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: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
*
*/
#include "ndn-net-device-face.h"
#include "ndn-l3-protocol.h"
#include "ns3/net-device.h"
#include "ns3/log.h"
#include "ns3/packet.h"
#include "ns3/node.h"
#include "ns3/pointer.h"
#include "ns3/point-to-point-net-device.h"
#include "ns3/channel.h"
#include "ns3/ndn-name-components.h"
NS_LOG_COMPONENT_DEFINE ("NdnNetDeviceFace");
namespace ns3 {
TypeId
NdnNetDeviceFace::GetTypeId ()
{
static TypeId tid = TypeId ("ns3::NdnNetDeviceFace")
.SetParent<NdnFace> ()
.SetGroupName ("Ndn")
;
return tid;
}
/**
* By default, Ndn face are created in the "down" state. Before
* becoming useable, the user must invoke SetUp on the face
*/
NdnNetDeviceFace::NdnNetDeviceFace (Ptr<Node> node, const Ptr<NetDevice> &netDevice)
: NdnFace (node)
, m_netDevice (netDevice)
{
NS_LOG_FUNCTION (this << netDevice);
SetMetric (1); // default metric
NS_ASSERT_MSG (m_netDevice != 0, "NdnNetDeviceFace needs to be assigned a valid NetDevice");
}
NdnNetDeviceFace::~NdnNetDeviceFace ()
{
NS_LOG_FUNCTION_NOARGS ();
}
NdnNetDeviceFace& NdnNetDeviceFace::operator= (const NdnNetDeviceFace &)
{
return *this;
}
Ptr<NetDevice>
NdnNetDeviceFace::GetNetDevice () const
{
return m_netDevice;
}
void
NdnNetDeviceFace::RegisterProtocolHandler (ProtocolHandler handler)
{
NS_LOG_FUNCTION (this);
NdnFace::RegisterProtocolHandler (handler);
m_node->RegisterProtocolHandler (MakeCallback (&NdnNetDeviceFace::ReceiveFromNetDevice, this),
NdnL3Protocol::ETHERNET_FRAME_TYPE, m_netDevice, true/*promiscuous mode*/);
}
bool
NdnNetDeviceFace::SendImpl (Ptr<Packet> packet)
{
NS_LOG_FUNCTION (this << packet);
NS_ASSERT_MSG (packet->GetSize () <= m_netDevice->GetMtu (),
"Packet size " << packet->GetSize () << " exceeds device MTU "
<< m_netDevice->GetMtu ()
<< " for Ndn; fragmentation not supported");
bool ok = m_netDevice->Send (packet, m_netDevice->GetBroadcast (),
NdnL3Protocol::ETHERNET_FRAME_TYPE);
return ok;
}
// callback
void
NdnNetDeviceFace::ReceiveFromNetDevice (Ptr<NetDevice> device,
Ptr<const Packet> p,
uint16_t protocol,
const Address &from,
const Address &to,
NetDevice::PacketType packetType)
{
NS_LOG_FUNCTION (device << p << protocol << from << to << packetType);
Receive (p);
}
std::ostream&
NdnNetDeviceFace::Print (std::ostream& os) const
{
os << "dev[" << GetNode ()->GetId () << "]=net(" << GetId () << ",";
os << DynamicCast<PointToPointNetDevice> (m_netDevice)->GetChannel ()->GetDevice (0)->GetNode ()->GetId ();
os << "-";
os << DynamicCast<PointToPointNetDevice> (m_netDevice)->GetChannel ()->GetDevice (1)->GetNode ()->GetId ();
os << ")";
return os;
}
}; // namespace ns3