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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (C) 2014 Named Data Networking Project
* See COPYING for copyright and distribution information.
*/
#ifndef NFD_FACE_ETHERNET_FACE_HPP
#define NFD_FACE_ETHERNET_FACE_HPP
#include "ethernet.hpp"
#include "face.hpp"
#ifndef HAVE_PCAP
#error "Cannot include this file when pcap is not available"
#endif
// forward declarations
struct pcap;
typedef pcap pcap_t;
namespace nfd {
class NetworkInterfaceInfo;
/**
* \brief Implementation of Face abstraction that uses raw
* Ethernet frames as underlying transport mechanism
*/
class EthernetFace : public Face
{
public:
/**
* \brief EthernetFace-related error
*/
struct Error : public Face::Error
{
Error(const std::string& what) : Face::Error(what) {}
};
EthernetFace(const shared_ptr<boost::asio::posix::stream_descriptor>& socket,
const shared_ptr<NetworkInterfaceInfo>& interface,
const ethernet::Address& address);
virtual
~EthernetFace();
/// send an Interest
virtual void
sendInterest(const Interest& interest);
/// send a Data
virtual void
sendData(const Data& data);
/**
* \brief Close the face
*
* This terminates all communication on the face and cause
* onFail() method event to be invoked
*/
virtual void
close();
private:
void
pcapInit();
void
setPacketFilter(const char* filterString);
void
sendPacket(const ndn::Block& block);
void
handleRead(const boost::system::error_code& error,
size_t nBytesRead);
void
processErrorCode(const boost::system::error_code& error);
size_t
getInterfaceMtu() const;
private:
shared_ptr<boost::asio::posix::stream_descriptor> m_socket;
std::string m_interfaceName;
ethernet::Address m_srcAddress;
ethernet::Address m_destAddress;
size_t m_interfaceMtu;
pcap_t* m_pcap;
};
} // namespace nfd
#endif // NFD_FACE_ETHERNET_FACE_HPP