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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- | |
2 | /* | |
3 | * This file is open source software, licensed to you under the terms | |
4 | * of the Apache License, Version 2.0 (the "License"). See the NOTICE file | |
5 | * distributed with this work for additional information regarding copyright | |
6 | * ownership. You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You may obtain a copy of the License at | |
9 | * | |
10 | * http://www.apache.org/licenses/LICENSE-2.0 | |
11 | * | |
12 | * Unless required by applicable law or agreed to in writing, | |
13 | * software distributed under the License is distributed on an | |
14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
15 | * KIND, either express or implied. See the License for the | |
16 | * specific language governing permissions and limitations | |
17 | * under the License. | |
18 | */ | |
19 | /* | |
20 | * Copyright (C) 2014 Cloudius Systems, Ltd. | |
21 | */ | |
22 | ||
23 | #ifndef CEPH_MSG_ETHERNET_H_ | |
24 | #define CEPH_MSG_ETHERNET_H_ | |
25 | ||
26 | #include <array> | |
27 | #include <sstream> | |
28 | ||
29 | #include "include/assert.h" | |
30 | #include "byteorder.h" | |
31 | ||
32 | struct ethernet_address { | |
33 | ethernet_address() {} | |
34 | ||
35 | ethernet_address(const uint8_t *eaddr) { | |
36 | std::copy(eaddr, eaddr + 6, mac.begin()); | |
37 | } | |
38 | ||
39 | ethernet_address(std::initializer_list<uint8_t> eaddr) { | |
40 | assert(eaddr.size() == mac.size()); | |
41 | std::copy(eaddr.begin(), eaddr.end(), mac.begin()); | |
42 | } | |
43 | ||
44 | ethernet_address ntoh() { | |
45 | return *this; | |
46 | } | |
47 | ethernet_address hton() { | |
48 | return *this; | |
49 | } | |
50 | std::array<uint8_t, 6> mac; | |
51 | } __attribute__((packed)); | |
52 | ||
53 | inline bool operator==(const ethernet_address& a, const ethernet_address& b) { | |
54 | return a.mac == b.mac; | |
55 | } | |
56 | std::ostream& operator<<(std::ostream& os, const ethernet_address& ea); | |
57 | ||
58 | struct ethernet { | |
59 | using address = ethernet_address; | |
60 | static address broadcast_address() { | |
61 | return {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
62 | } | |
63 | static constexpr uint16_t arp_hardware_type() { return 1; } | |
64 | }; | |
65 | ||
66 | struct eth_hdr { | |
67 | ethernet_address dst_mac; | |
68 | ethernet_address src_mac; | |
69 | uint16_t eth_proto; | |
70 | eth_hdr hton() { | |
71 | eth_hdr hdr = *this; | |
72 | hdr.eth_proto = ::hton(eth_proto); | |
73 | return hdr; | |
74 | } | |
75 | eth_hdr ntoh() { | |
76 | eth_hdr hdr = *this; | |
77 | hdr.eth_proto = ::ntoh(eth_proto); | |
78 | return hdr; | |
79 | } | |
80 | } __attribute__((packed)); | |
81 | ||
82 | ethernet_address parse_ethernet_address(std::string addr); | |
83 | ||
84 | #endif /* CEPH_MSG_ETHERNET_H_ */ |