blob: 19266b5ca3eb7b823e87677815c6d12ec07ca2fb [file] [log] [blame]
/* -*- 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.hpp"
#include "ndn-l3-protocol.hpp"
#include "ndn-ns3.hpp"
#include "ns3/net-device.h"
#include "ns3/log.h"
#include "ns3/packet.h"
#include "ns3/node.h"
#include "ns3/pointer.h"
// #include "ns3/address.h"
#include "ns3/point-to-point-net-device.h"
#include "ns3/channel.h"
#include "../utils/ndn-fw-hop-count-tag.hpp"
NS_LOG_COMPONENT_DEFINE("ndn.NetDeviceFace");
namespace ns3 {
namespace ndn {
NetDeviceFace::NetDeviceFace(Ptr<Node> node, const Ptr<NetDevice>& netDevice)
: Face(FaceUri("netDeviceFace://"), FaceUri("netDeviceFace://"))
, m_node(node)
, m_netDevice(netDevice)
{
NS_LOG_FUNCTION(this << netDevice);
setMetric(1); // default metric
NS_ASSERT_MSG(m_netDevice != 0, "NetDeviceFace needs to be assigned a valid NetDevice");
m_node->RegisterProtocolHandler(MakeCallback(&NetDeviceFace::receiveFromNetDevice, this),
L3Protocol::ETHERNET_FRAME_TYPE, m_netDevice,
true /*promiscuous mode*/);
}
NetDeviceFace::~NetDeviceFace()
{
NS_LOG_FUNCTION_NOARGS();
close();
}
void
NetDeviceFace::close()
{
m_node->UnregisterProtocolHandler(MakeCallback(&NetDeviceFace::receiveFromNetDevice, this));
this->fail("Close connection");
}
Ptr<NetDevice>
NetDeviceFace::GetNetDevice() const
{
return m_netDevice;
}
void
NetDeviceFace::send(Ptr<Packet> packet)
{
NS_ASSERT_MSG(packet->GetSize() <= m_netDevice->GetMtu(),
"Packet size " << packet->GetSize() << " exceeds device MTU "
<< m_netDevice->GetMtu());
FwHopCountTag tag;
packet->RemovePacketTag(tag);
tag.Increment();
packet->AddPacketTag(tag);
m_netDevice->Send(packet, m_netDevice->GetBroadcast(), L3Protocol::ETHERNET_FRAME_TYPE);
}
void
NetDeviceFace::sendInterest(const Interest& interest)
{
NS_LOG_FUNCTION(this << &interest);
this->onSendInterest(interest);
Ptr<Packet> packet = Convert::ToPacket(interest);
send(packet);
}
void
NetDeviceFace::sendData(const Data& data)
{
NS_LOG_FUNCTION(this << &data);
this->onSendData(data);
Ptr<Packet> packet = Convert::ToPacket(data);
send(packet);
}
// callback
void
NetDeviceFace::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);
Ptr<Packet> packet = p->Copy();
try {
uint32_t type = Convert::getPacketType(p);
if (type == ::ndn::tlv::Interest) {
shared_ptr<const Interest> i = Convert::FromPacket<Interest>(packet);
this->onReceiveInterest(*i);
}
else if (type == ::ndn::tlv::Data) {
shared_ptr<const Data> d = Convert::FromPacket<Data>(packet);
this->onReceiveData(*d);
}
else {
NS_LOG_ERROR("Unsupported TLV packet");
}
}
catch (::ndn::tlv::Error&) {
NS_LOG_ERROR("Unrecognized TLV packet");
}
}
} // namespace ndn
} // namespace ns3