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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2011-2015 Regents of the University of California.
*
* This file is part of ndnSIM. See AUTHORS for complete list of ndnSIM authors and
* contributors.
*
* ndnSIM is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Foundation,
* either version 3 of the License, or (at your option) any later version.
*
* ndnSIM 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
* ndnSIM, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
**/
#include "ndn-net-device-link-service.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.NetDeviceLinkService");
namespace ns3 {
namespace ndn {
NetDeviceLinkService::NetDeviceLinkService(Ptr<Node> node, const Ptr<NetDevice>& netDevice)
: m_node(node)
, m_netDevice(netDevice)
{
NS_LOG_FUNCTION(this << netDevice);
NS_ASSERT_MSG(m_netDevice != 0, "NetDeviceFace needs to be assigned a valid NetDevice");
m_node->RegisterProtocolHandler(MakeCallback(&NetDeviceLinkService::receiveFromNetDevice, this),
L3Protocol::ETHERNET_FRAME_TYPE, m_netDevice,
true /*promiscuous mode*/);
}
NetDeviceLinkService::~NetDeviceLinkService()
{
NS_LOG_FUNCTION_NOARGS();
}
Ptr<Node>
NetDeviceLinkService::GetNode() const
{
return m_node;
}
Ptr<NetDevice>
NetDeviceLinkService::GetNetDevice() const
{
return m_netDevice;
}
void
NetDeviceLinkService::doSendInterest(const Interest& interest)
{
NS_LOG_FUNCTION(this << &interest);
Ptr<Packet> packet = Convert::ToPacket(interest);
send(packet);
}
void
NetDeviceLinkService::doSendData(const Data& data)
{
NS_LOG_FUNCTION(this << &data);
Ptr<Packet> packet = Convert::ToPacket(data);
send(packet);
}
void
NetDeviceLinkService::doSendNack(const lp::Nack& nack)
{
NS_LOG_FUNCTION(this << &nack);
// TODO
// Ptr<Packet> packet = Convert::ToPacket(nack);
// send(packet);
}
// callback
void
NetDeviceLinkService::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 {
switch (Convert::getPacketType(p)) {
case ::ndn::tlv::Interest: {
shared_ptr<const Interest> i = Convert::FromPacket<Interest>(packet);
this->receiveInterest(*i);
break;
}
case ::ndn::tlv::Data: {
shared_ptr<const Data> d = Convert::FromPacket<Data>(packet);
this->receiveData(*d);
break;
}
// case ::ndn::tlv::Nack: {
// shared_ptr<const Nack> n = Convert::FromPacket<Nack>(packet);
// this->onReceiveNack(*n);
// }
default:
NS_LOG_ERROR("Unsupported TLV packet");
}
}
catch (const ::ndn::tlv::Error& e) {
NS_LOG_ERROR("Unrecognized TLV packet " << e.what());
}
}
void
NetDeviceLinkService::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);
}
} // namespace face
} // namespace nfd