// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
/*
 * This file is open source software, licensed to you under the terms
 * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership.  You may not use this file except in compliance with the License.
 *
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
/*
 * Copyright (C) 2014 Cloudius Systems, Ltd.
 */

#ifndef CEPH_MSG_ETHERNET_H_
#define CEPH_MSG_ETHERNET_H_

#include <array>
#include <sstream>

#include "include/assert.h"
#include "byteorder.h"

struct ethernet_address {
  ethernet_address() {}

  ethernet_address(const uint8_t *eaddr) {
    std::copy(eaddr, eaddr + 6, mac.begin());
  }

  ethernet_address(std::initializer_list<uint8_t> eaddr) {
    assert(eaddr.size() == mac.size());
    std::copy(eaddr.begin(), eaddr.end(), mac.begin());
  }

  ethernet_address ntoh() {
    return *this;
  }
  ethernet_address hton() {
    return *this;
  }
  std::array<uint8_t, 6> mac;
} __attribute__((packed));

inline bool operator==(const ethernet_address& a, const ethernet_address& b) {
  return a.mac == b.mac;
}
std::ostream& operator<<(std::ostream& os, const ethernet_address& ea);

struct ethernet {
  using address = ethernet_address;
  static address broadcast_address() {
      return  {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
  }
  static constexpr uint16_t arp_hardware_type() { return 1; }
};

struct eth_hdr {
  ethernet_address dst_mac;
  ethernet_address src_mac;
  uint16_t eth_proto;
  eth_hdr hton() {
    eth_hdr hdr = *this;
    hdr.eth_proto = ::hton(eth_proto);
    return hdr;
  }
  eth_hdr ntoh() {
    eth_hdr hdr = *this;
    hdr.eth_proto = ::ntoh(eth_proto);
    return hdr;
  }
} __attribute__((packed));

ethernet_address parse_ethernet_address(std::string addr);

#endif /* CEPH_MSG_ETHERNET_H_ */