const.hh

/*
 * 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.
 */
 
#pragma once
 
#include <cstdint>
 
namespace seastar {
 
namespace net {
 
enum class ip_protocol_num : uint8_t {
    icmp = 1, tcp = 6, udp = 17, unused = 255
};
 
enum class eth_protocol_num : uint16_t {
    ipv4 = 0x0800, arp = 0x0806, ipv6 = 0x86dd
};
 
const uint8_t eth_hdr_len = 14;
const uint8_t tcp_hdr_len_min = 20;
const uint8_t ipv4_hdr_len_min = 20;
const uint8_t ipv6_hdr_len_min = 40;
const uint16_t ip_packet_len_max = 65535;
 
}
 
}