ethernet.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#ifndef NDN_UTIL_ETHERNET_HPP
#define NDN_UTIL_ETHERNET_HPP

#include <array>
#include <cstdint>
#include <functional>
#include <string>

namespace ndn {
namespace util {
namespace ethernet {

const uint16_t ETHERTYPE_NDN = 0x8624;

const size_t ADDR_LEN     = 6;      
const size_t TYPE_LEN     = 2;      
const size_t HDR_LEN      = 14;     
const size_t TAG_LEN      = 4;      
const size_t MIN_DATA_LEN = 46;     
const size_t MAX_DATA_LEN = 1500;   
const size_t CRC_LEN      = 4;      


class Address : public std::array<uint8_t, ADDR_LEN>
{
public:
  Address();

  Address(uint8_t a1, uint8_t a2, uint8_t a3,
          uint8_t a4, uint8_t a5, uint8_t a6);

  explicit
  Address(const uint8_t octets[ADDR_LEN]);

  bool
  isBroadcast() const;

  bool
  isMulticast() const;

  bool
  isNull() const;

  std::string
  toString(char sep = ':') const;

  static Address
  fromString(const std::string& str);
};

Address
getBroadcastAddress();

Address
getDefaultMulticastAddress();

std::ostream&
operator<<(std::ostream& o, const Address& a);

} // namespace ethernet
} // namespace util
} // namespace ndn


namespace std {

// specialize std::hash<> for ethernet::Address
template<>
struct hash<ndn::util::ethernet::Address>
{
  size_t
  operator()(const ndn::util::ethernet::Address& a) const noexcept;
};

} // namespace std

#endif // NDN_UTIL_ETHERNET_HPP