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Davide Pesavento44deacc2014-02-19 10:48:07 +01001/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2/**
Alexander Afanasyev9bcbc7c2014-04-06 19:37:37 -07003 * Copyright (c) 2014 Regents of the University of California,
4 * Arizona Board of Regents,
5 * Colorado State University,
6 * University Pierre & Marie Curie, Sorbonne University,
7 * Washington University in St. Louis,
8 * Beijing Institute of Technology
9 *
10 * This file is part of NFD (Named Data Networking Forwarding Daemon).
11 * See AUTHORS.md for complete list of NFD authors and contributors.
12 *
13 * NFD is free software: you can redistribute it and/or modify it under the terms
14 * of the GNU General Public License as published by the Free Software Foundation,
15 * either version 3 of the License, or (at your option) any later version.
16 *
17 * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
18 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
19 * PURPOSE. See the GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License along with
22 * NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
23 **/
Davide Pesavento44deacc2014-02-19 10:48:07 +010024
25#ifndef NFD_FACE_ETHERNET_FACE_HPP
26#define NFD_FACE_ETHERNET_FACE_HPP
27
28#include "ethernet.hpp"
29#include "face.hpp"
30
31#ifndef HAVE_PCAP
32#error "Cannot include this file when pcap is not available"
33#endif
34
35// forward declarations
36struct pcap;
37typedef pcap pcap_t;
38
39namespace nfd {
40
Davide Pesaventob60cc122014-03-19 19:26:02 +010041class NetworkInterfaceInfo;
42
Davide Pesavento44deacc2014-02-19 10:48:07 +010043/**
44 * \brief Implementation of Face abstraction that uses raw
45 * Ethernet frames as underlying transport mechanism
46 */
47class EthernetFace : public Face
48{
49public:
50 /**
51 * \brief EthernetFace-related error
52 */
53 struct Error : public Face::Error
54 {
55 Error(const std::string& what) : Face::Error(what) {}
56 };
57
58 EthernetFace(const shared_ptr<boost::asio::posix::stream_descriptor>& socket,
Davide Pesaventob60cc122014-03-19 19:26:02 +010059 const shared_ptr<NetworkInterfaceInfo>& interface,
Davide Pesavento44deacc2014-02-19 10:48:07 +010060 const ethernet::Address& address);
61
62 virtual
63 ~EthernetFace();
64
65 /// send an Interest
66 virtual void
67 sendInterest(const Interest& interest);
68
69 /// send a Data
70 virtual void
71 sendData(const Data& data);
72
73 /**
74 * \brief Close the face
75 *
76 * This terminates all communication on the face and cause
77 * onFail() method event to be invoked
78 */
79 virtual void
80 close();
81
82private:
83 void
84 pcapInit();
85
86 void
87 setPacketFilter(const char* filterString);
88
89 void
90 sendPacket(const ndn::Block& block);
91
92 void
93 handleRead(const boost::system::error_code& error,
94 size_t nBytesRead);
95
96 void
97 processErrorCode(const boost::system::error_code& error);
98
Davide Pesavento44deacc2014-02-19 10:48:07 +010099 size_t
100 getInterfaceMtu() const;
101
102private:
103 shared_ptr<boost::asio::posix::stream_descriptor> m_socket;
Davide Pesaventob60cc122014-03-19 19:26:02 +0100104 std::string m_interfaceName;
105 ethernet::Address m_srcAddress;
Davide Pesavento44deacc2014-02-19 10:48:07 +0100106 ethernet::Address m_destAddress;
107 size_t m_interfaceMtu;
108 pcap_t* m_pcap;
109};
110
111} // namespace nfd
112
113#endif // NFD_FACE_ETHERNET_FACE_HPP