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58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
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/*
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* PROJECT: ReactOS nVidia nForce Ethernet Controller Driver
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* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
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* PURPOSE: Ethernet definitions
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* COPYRIGHT: Copyright 2021-2022 Dmitry Borisov <di.sean@protonmail.com>
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*/
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#pragma once
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#include <pshpack1.h>
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typedef struct _ETH_HEADER
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{
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UCHAR Destination[ETH_LENGTH_OF_ADDRESS];
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UCHAR Source[ETH_LENGTH_OF_ADDRESS];
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USHORT PayloadType;
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} ETH_HEADER, *PETH_HEADER;
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#include <poppack.h>
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#define ETH_IS_LOCALLY_ADMINISTERED(Address) \
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(BOOLEAN)(((PUCHAR)(Address))[0] & ((UCHAR)0x02))
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#define ETH_IS_EMPTY(Address) \
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(BOOLEAN)((((PUCHAR)(Address))[0] | ((PUCHAR)(Address))[1] | ((PUCHAR)(Address))[2] | \
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((PUCHAR)(Address))[3] | ((PUCHAR)(Address))[5] | ((PUCHAR)(Address))[5]) == 0)
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typedef struct IPv4_HEADER
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{
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UCHAR VersionLength;
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UCHAR Tos;
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USHORT TotalLength;
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USHORT Id;
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USHORT Offset;
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UCHAR Ttl;
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UCHAR Protocol;
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USHORT Checksum;
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ULONG Source;
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ULONG Destination;
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} IPv4_HEADER, *PIPv4_HEADER;
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typedef struct TCPv4_HEADER
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{
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USHORT SourcePort;
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USHORT DestinationPort;
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ULONG SequenceNumber;
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ULONG AckNumber;
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UCHAR DataOffset;
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UCHAR Flags;
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USHORT Window;
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USHORT Checksum;
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USHORT Urgent;
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} TCPv4_HEADER, *PTCPv4_HEADER;
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#define IP_HEADER_LENGTH(Header) \
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(((Header)->VersionLength & 0x0F) << 2)
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#define TCP_HEADER_LENGTH(Header) \
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((Header->DataOffset & 0xF0) >> 2)
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