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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <AK/NetworkOrdered.h>
30#include <Kernel/Net/MACAddress.h>
31
32#pragma GCC diagnostic ignored "-Warray-bounds"
33
34class [[gnu::packed]] EthernetFrameHeader
35{
36public:
37 EthernetFrameHeader() {}
38 ~EthernetFrameHeader() {}
39
40 MACAddress destination() const { return m_destination; }
41 void set_destination(const MACAddress& address) { m_destination = address; }
42
43 MACAddress source() const { return m_source; }
44 void set_source(const MACAddress& address) { m_source = address; }
45
46 u16 ether_type() const { return m_ether_type; }
47 void set_ether_type(u16 ether_type) { m_ether_type = ether_type; }
48
49 const void* payload() const { return &m_payload[0]; }
50 void* payload() { return &m_payload[0]; }
51
52private:
53 MACAddress m_destination;
54 MACAddress m_source;
55 NetworkOrdered<u16> m_ether_type;
56 u32 m_payload[0];
57};
58
59static_assert(sizeof(EthernetFrameHeader) == 14);