jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#pragma once
8
9#include <AK/Endian.h>
10#include <AK/MACAddress.h>
11#include <Kernel/Net/EtherType.h>
12#include <Kernel/Net/IPv4.h>
13
14namespace Kernel {
15
16struct ARPOperation {
17 enum : u16 {
18 Request = 1,
19 Response = 2,
20 };
21};
22
23struct ARPHardwareType {
24 enum : u16 {
25 Ethernet = 1,
26 };
27};
28
29class [[gnu::packed]] ARPPacket {
30public:
31 u16 hardware_type() const { return m_hardware_type; }
32 void set_hardware_type(u16 w) { m_hardware_type = w; }
33
34 u16 protocol_type() const { return m_protocol_type; }
35 void set_protocol_type(u16 w) { m_protocol_type = w; }
36
37 u8 hardware_address_length() const { return m_hardware_address_length; }
38 void set_hardware_address_length(u8 b) { m_hardware_address_length = b; }
39
40 u8 protocol_address_length() const { return m_protocol_address_length; }
41 void set_protocol_address_length(u8 b) { m_protocol_address_length = b; }
42
43 u16 operation() const { return m_operation; }
44 void set_operation(u16 w) { m_operation = w; }
45
46 MACAddress const& sender_hardware_address() const { return m_sender_hardware_address; }
47 void set_sender_hardware_address(MACAddress const& address) { m_sender_hardware_address = address; }
48
49 IPv4Address const& sender_protocol_address() const { return m_sender_protocol_address; }
50 void set_sender_protocol_address(IPv4Address const& address) { m_sender_protocol_address = address; }
51
52 MACAddress const& target_hardware_address() const { return m_target_hardware_address; }
53 void set_target_hardware_address(MACAddress const& address) { m_target_hardware_address = address; }
54
55 IPv4Address const& target_protocol_address() const { return m_target_protocol_address; }
56 void set_target_protocol_address(IPv4Address const& address) { m_target_protocol_address = address; }
57
58private:
59 NetworkOrdered<u16> m_hardware_type { ARPHardwareType::Ethernet };
60 NetworkOrdered<u16> m_protocol_type { EtherType::IPv4 };
61 u8 m_hardware_address_length { sizeof(MACAddress) };
62 u8 m_protocol_address_length { sizeof(IPv4Address) };
63 NetworkOrdered<u16> m_operation;
64 MACAddress m_sender_hardware_address;
65 IPv4Address m_sender_protocol_address;
66 MACAddress m_target_hardware_address;
67 IPv4Address m_target_protocol_address;
68};
69
70static_assert(sizeof(ARPPacket) == 28);
71
72}