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/*
* xfilter.h
*
* Address filtering for NDIS MACs
*
* This file is part of the w32api package.
*
* Contributors:
* Created by Casper S. Hornstrup <chorns@users.sourceforge.net>
*
* THIS SOFTWARE IS NOT COPYRIGHTED
*
* This source code is offered for use in the public domain. You may
* use, modify or distribute it freely.
*
* This code is distributed in the hope that it will be useful but
* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
* DISCLAIMED. This includes but is not limited to warranties of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#ifndef __XFILTER_H
#define __XFILTER_H
#if __GNUC__ >=3
#pragma GCC system_header
#endif
#ifdef __cplusplus
extern "C" {
#endif
#include "ntddk.h"
#define ETH_LENGTH_OF_ADDRESS 6
#define ETH_IS_BROADCAST(Address) \
((((PUCHAR)(Address))[0] == ((UCHAR)0xff)) && (((PUCHAR)(Address))[1] == ((UCHAR)0xff)))
#define ETH_IS_MULTICAST(Address) \
(BOOLEAN)(((PUCHAR)(Address))[0] & ((UCHAR)0x01))
#define ETH_COMPARE_NETWORK_ADDRESSES(_A, _B, _Result) \
{ \
if (*(ULONG UNALIGNED *)&(_A)[2] > *(ULONG UNALIGNED *)&(_B)[2]) \
{ \
*(_Result) = 1; \
} \
else if (*(ULONG UNALIGNED *)&(_A)[2] < *(ULONG UNALIGNED *)&(_B)[2]) \
{ \
*(_Result) = (UINT)-1; \
} \
else if (*(USHORT UNALIGNED *)(_A) > *(USHORT UNALIGNED *)(_B)) \
{ \
*(_Result) = 1; \
} \
else if (*(USHORT UNALIGNED *)(_A) < *(USHORT UNALIGNED *)(_B)) \
{ \
*(_Result) = (UINT)-1; \
} \
else \
{ \
*(_Result) = 0; \
} \
}
#define ETH_COMPARE_NETWORK_ADDRESSES_EQ(_A,_B, _Result) \
{ \
if ((*(ULONG UNALIGNED *)&(_A)[2] == *(ULONG UNALIGNED *)&(_B)[2]) && \
(*(USHORT UNALIGNED *)(_A) == *(USHORT UNALIGNED *)(_B))) \
{ \
*(_Result) = 0; \
} \
else \
{ \
*(_Result) = 1; \
} \
}
#define ETH_COPY_NETWORK_ADDRESS(_D, _S) \
{ \
*((ULONG UNALIGNED *)(_D)) = *((ULONG UNALIGNED *)(_S)); \
*((USHORT UNALIGNED *)((UCHAR *)(_D) + 4)) = *((USHORT UNALIGNED *)((UCHAR *)(_S) + 4)); \
}
#define FDDI_LENGTH_OF_LONG_ADDRESS 6
#define FDDI_LENGTH_OF_SHORT_ADDRESS 2
#define FDDI_IS_BROADCAST(Address, AddressLength, Result) \
*Result = ((*(PUCHAR)(Address) == (UCHAR)0xFF) && \
(*((PUCHAR)(Address) + 1) == (UCHAR)0xFF))
#define FDDI_IS_MULTICAST(Address, AddressLength, Result) \
*Result = (BOOLEAN)(*(UCHAR *)(Address) & (UCHAR)0x01)
#define FDDI_IS_SMT(FcByte, Result) \
{ \
*Result = ((FcByte & ((UCHAR)0xf0)) == 0x40); \
}
#define FDDI_COMPARE_NETWORK_ADDRESSES(_A, _B, _Length, _Result) \
{ \
if (*(USHORT UNALIGNED *)(_A) > *(USHORT UNALIGNED *)(_B)) \
{ \
*(_Result) = 1; \
} \
else if (*(USHORT UNALIGNED *)(_A) < *(USHORT UNALIGNED *)(_B)) \
{ \
*(_Result) = (UINT)-1; \
} \
else if (_Length == 2) \
{ \
*(_Result) = 0; \
} \
else if (*(ULONG UNALIGNED *)((PUCHAR)(_A) + 2) > *(ULONG UNALIGNED *)((PUCHAR)(_B) + 2)) \
{ \
*(_Result) = 1; \
} \
else if (*(ULONG UNALIGNED *)((PUCHAR)(_A) + 2) < *(ULONG UNALIGNED *)((PUCHAR)(_B) + 2)) \
{ \
*(_Result) = (UINT)-1; \
} \
else \
{ \
*(_Result) = 0; \
} \
}
#define FDDI_COMPARE_NETWORK_ADDRESSES_EQ(_A, _B, _Length, _Result) \
{ \
if ((*(USHORT UNALIGNED *)(_A) == *(USHORT UNALIGNED *)(_B)) && \
(((_Length) == 2) || \
(*(ULONG UNALIGNED *)((PUCHAR)(_A) + 2) == *(ULONG UNALIGNED *)((PUCHAR)(_B) + 2)))) \
{ \
*(_Result) = 0; \
} \
else \
{ \
*(_Result) = 1; \
} \
}
#define FDDI_COPY_NETWORK_ADDRESS(D, S, AddressLength) \
{ \
PCHAR _D = (D); \
PCHAR _S = (S); \
UINT _C = (AddressLength); \
for ( ; _C > 0 ; _D++, _S++, _C--) \
{ \
*_D = *_S; \
} \
}
#define TR_LENGTH_OF_FUNCTIONAL 4
#define TR_LENGTH_OF_ADDRESS 6
typedef ULONG TR_FUNCTIONAL_ADDRESS;
typedef ULONG TR_GROUP_ADDRESS;
#define TR_IS_NOT_DIRECTED(_Address, _Result) \
{ \
*(_Result) = (BOOLEAN)((_Address)[0] & 0x80); \
}
#define TR_IS_FUNCTIONAL(_Address, _Result) \
{ \
*(_Result) = (BOOLEAN)(((_Address)[0] & 0x80) && !((_Address)[2] & 0x80)); \
}
#define TR_IS_GROUP(_Address, _Result) \
{ \
*(_Result) = (BOOLEAN)((_Address)[0] & (_Address)[2] & 0x80); \
}
#define TR_IS_SOURCE_ROUTING(_Address, _Result) \
{ \
*(_Result) = (BOOLEAN)((_Address)[0] & 0x80); \
}
#define TR_IS_MAC_FRAME(_PacketHeader) ((((PUCHAR)_PacketHeader)[1] & 0xFC) == 0)
#define TR_IS_BROADCAST(_Address, _Result) \
{ \
*(_Result) = (BOOLEAN)(((*(UNALIGNED USHORT *)&(_Address)[0] == 0xFFFF) || \
(*(UNALIGNED USHORT *)&(_Address)[0] == 0x00C0)) && \
(*(UNALIGNED ULONG *)&(_Address)[2] == 0xFFFFFFFF)); \
}
#define TR_COMPARE_NETWORK_ADDRESSES(_A, _B, _Result) \
{ \
if (*(ULONG UNALIGNED *)&(_A)[2] > *(ULONG UNALIGNED *)&(_B)[2]) \
{ \
*(_Result) = 1; \
} \
else if (*(ULONG UNALIGNED *)&(_A)[2] < *(ULONG UNALIGNED *)&(_B)[2]) \
{ \
*(_Result) = (UINT)-1; \
} \
else if (*(USHORT UNALIGNED *)(_A) > *(USHORT UNALIGNED *)(_B)) \
{ \
*(_Result) = 1; \
} \
else if (*(USHORT UNALIGNED *)(_A) < *(USHORT UNALIGNED *)(_B)) \
{ \
*(_Result) = (UINT)-1; \
} \
else \
{ \
*(_Result) = 0; \
} \
}
#define TR_COPY_NETWORK_ADDRESS(_D, _S) \
{ \
*((ULONG UNALIGNED *)(_D)) = *((ULONG UNALIGNED *)(_S)); \
*((USHORT UNALIGNED *)((UCHAR *)(_D)+4)) = *((USHORT UNALIGNED *)((UCHAR *)(_S) + 4)); \
}
#define TR_COMPARE_NETWORK_ADDRESSES_EQ(_A, _B, _Result) \
{ \
if ((*(ULONG UNALIGNED *)&(_A)[2] == *(ULONG UNALIGNED *)&(_B)[2]) && \
(*(USHORT UNALIGNED *)&(_A)[0] == *(USHORT UNALIGNED *)&(_B)[0])) \
{ \
*(_Result) = 0; \
} \
else \
{ \
*(_Result) = 1; \
} \
}
#ifdef __cplusplus
}
#endif
#endif /* __XFILTER_H */
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