767 lines
26 KiB
C
767 lines
26 KiB
C
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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mac.h
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Abstract:
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This header file defines manifest constants and necessary macros for use
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by transports dealing with multiple MAC cards through the NDIS interface.
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Author:
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David Beaver (dbeaver) 02-Oct-1990
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Revision History:
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--*/
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#ifndef _MAC_
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#define _MAC_
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//
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// MAC-specific definitions, some of which get used below
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//
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#define MAX_MAC_HEADER_LENGTH 32
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#define MAX_SOURCE_ROUTING 18
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#define MAX_DEFAULT_SR 2
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#define ETHERNET_ADDRESS_LENGTH 6
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#define ETHERNET_PACKET_LENGTH 1514 // max size of an ethernet packet
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#define ETHERNET_HEADER_LENGTH 14 // size of the ethernet MAC header
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#define ETHERNET_DATA_LENGTH_OFFSET 12
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#define ETHERNET_DESTINATION_OFFSET 0
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#define ETHERNET_SOURCE_OFFSET 6
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#define TR_ADDRESS_LENGTH 6
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#define TR_ADDRESS_OFFSET 2
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#define TR_SPECIFIC_OFFSET 0
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#define TR_PACKET_LENGTH 1514 // max size of a TR packet
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#define TR_HEADER_LENGTH 36 // size of the MAC header w/o source routing
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#define TR_DATA_LENGTH_OFFSET 0
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#define TR_DESTINATION_OFFSET 2
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#define TR_SOURCE_OFFSET 8
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#define TR_ROUTING_OFFSET 14 // starts at the 14th byte
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#define TR_GR_BCAST_LENGTH 2
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#define TR_GR_BROADCAST 0xC270 // what a general route b'cast looks like
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#define TR_ROUTING_LENGTH_MASK 0x1F // low 5 bits in byte
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#define TR_DIRECTION_MASK 0x80 // returns direction bit
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#define TR_PREAMBLE_AC 0x10 // how would these be specified?
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#define TR_PREAMBLE_FC 0x40
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#define TR_HEADER_BYTE_0 0x10
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#define TR_HEADER_BYTE_1 0x40
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#define FDDI_ADDRESS_LENGTH 6
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#define FDDI_HEADER_BYTE 0x57
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//
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// We need this to define information about the MAC. Note that
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// it is a strange structure in that the first four elements
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// are for use internally by the nbfmac routines, while the
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// DeviceContext knows about and uses the last two.
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//
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typedef struct _NBF_NDIS_IDENTIFICATION {
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NDIS_MEDIUM MediumType;
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BOOLEAN SourceRouting;
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BOOLEAN MediumAsync;
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BOOLEAN QueryWithoutSourceRouting;
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BOOLEAN AllRoutesNameRecognized;
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ULONG DestinationOffset;
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ULONG SourceOffset;
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ULONG AddressLength;
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ULONG TransferDataOffset;
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ULONG MaxHeaderLength;
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BOOLEAN CopyLookahead;
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BOOLEAN ReceiveSerialized;
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BOOLEAN TransferSynchronous;
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BOOLEAN SingleReceive;
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} NBF_NDIS_IDENTIFICATION, *PNBF_NDIS_IDENTIFICATION;
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VOID
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MacConstructHeader(
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IN PNBF_NDIS_IDENTIFICATION MacInfo,
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IN PUCHAR Buffer,
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IN PUCHAR DestinationAddress,
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IN PUCHAR SourceAddress,
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IN UINT PacketLength,
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IN PUCHAR SourceRouting,
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IN UINT SourceRoutingLength,
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OUT PUINT HeaderLength
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);
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VOID
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MacReturnMaxDataSize(
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IN PNBF_NDIS_IDENTIFICATION MacInfo,
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IN PUCHAR SourceRouting,
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IN UINT SourceRoutingLength,
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IN UINT DeviceMaxFrameSize,
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IN BOOLEAN AssumeWorstCase,
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OUT PUINT MaxFrameSize
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);
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VOID
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MacInitializeMacInfo(
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IN NDIS_MEDIUM MacType,
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IN BOOLEAN UseDix,
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OUT PNBF_NDIS_IDENTIFICATION MacInfo
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);
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extern UCHAR SingleRouteSourceRouting[];
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extern UCHAR GeneralRouteSourceRouting[];
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extern ULONG DefaultSourceRoutingLength;
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//++
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//
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// VOID
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// MacReturnDestinationAddress(
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// IN PNBF_NDIS_IDENTIFICATION MacInfo,
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// IN PVOID Packet,
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// OUT PVOID * DestinationAddress
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// );
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//
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// Routine Description:
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//
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// Returns the a pointer to the destination address in the packet.
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//
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// Arguments:
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//
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// MacInfo - Describes the MAC we wish to decode.
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//
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// Packet - The packet data.
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//
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// DestinationAddress - Returns the start of the destination address.
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//
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// Return Value:
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//
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// None.
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//
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//--
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#define MacReturnDestinationAddress(_MacInfo, _Packet, _DestinationAddress) \
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*(_DestinationAddress) = ((PUCHAR)(_Packet)) + (_MacInfo)->DestinationOffset
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//++
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//
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// VOID
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// MacReturnSourceAddress(
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// IN PNBF_NDIS_IDENTIFICATION MacInfo,
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// IN PVOID Packet,
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// OUT PHARDWARE_ADDRESS SourceAddressBuffer,
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// OUT PHARDWARE_ADDRESS * SourceAddress,
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// OUT BOOLEAN * Multicast OPTIONAL
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// );
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//
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// Routine Description:
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//
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// Copies the source address in the packet into SourceAddress.
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// NOTE THAT IT MAY COPY THE DATA, UNLIKE ReturnDestinationAddress
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// AND ReturnSourceRouting. Optionally, indicates whether the
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// destination address is a multicast address.
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//
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// Arguments:
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//
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// MacInfo - Describes the MAC we wish to decode.
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//
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// Packet - The packet data.
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//
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// SourceAddressBuffer - A buffer to hold the source address,
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// if needed.
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//
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// SourceAddress - Returns a pointer to the source address.
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//
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// Multicast - Optional pointer to a BOOLEAN to receive indication
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// of whether the destination was a multicast address.
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//
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// Return Value:
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//
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// None.
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//
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//--
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//
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// NOTE: The default case below handles Ethernet and FDDI.
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//
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#define MacReturnSourceAddress(_MacInfo, _Packet, _SourceAddressBuffer, \
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_SourceAddress, _Multicast) \
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{ \
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PUCHAR TmpPacket = (PUCHAR)(_Packet); \
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PUCHAR SrcBuffer = (PUCHAR)(_SourceAddressBuffer); \
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\
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switch ((_MacInfo)->MediumType) { \
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case NdisMedium802_5: \
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if (ARGUMENT_PRESENT(_Multicast)) { \
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*(PBOOLEAN)(_Multicast) = TmpPacket[2] & 0x80; \
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} \
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if (TmpPacket[8] & 0x80) { \
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*(PULONG)SrcBuffer = *(ULONG UNALIGNED *)(&TmpPacket[8]) & ~0x80;\
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SrcBuffer[4] = TmpPacket[12]; \
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SrcBuffer[5] = TmpPacket[13]; \
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*(_SourceAddress) = (PHARDWARE_ADDRESS)SrcBuffer; \
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} else { \
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*(_SourceAddress) = (PHARDWARE_ADDRESS)(TmpPacket + 8); \
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} \
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break; \
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default: \
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if (ARGUMENT_PRESENT(_Multicast)) { \
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*(PBOOLEAN)(_Multicast) = TmpPacket[0] & 0x01; \
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} \
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*(_SourceAddress) = (PHARDWARE_ADDRESS)(TmpPacket + \
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(_MacInfo)->SourceOffset); \
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break; \
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} \
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}
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//++
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//
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// VOID
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// MacReturnSourceRouting(
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// IN PNBF_NDIS_IDENTIFICATION MacInfo,
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// IN PVOID Packet,
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// OUT PVOID * SourceRouting
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// OUT PUINT SourceRoutingLength
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// );
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//
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// Routine Description:
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//
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// Returns the a pointer to the source routing info in the packet.
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//
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// Arguments:
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//
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// MacInfo - Describes the MAC we wish to decode.
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//
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// Packet - The packet data.
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//
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// SourceRouting - Returns the start of the source routing information,
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// or NULL if none is present.
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//
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// SourceRoutingLength - Returns the length of the source routing
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// information.
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//
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// Return Value:
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//
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// None.
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//
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//--
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#define MacReturnSourceRouting(_MacInfo, _Packet, _SourceRouting, _SourceRoutingLength) \
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{ \
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PUCHAR TmpPacket = (PUCHAR)(_Packet); \
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*(_SourceRoutingLength) = 0; \
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if ((_MacInfo)->SourceRouting) { \
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if (TmpPacket[8] & 0x80) { \
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*(_SourceRouting) = TmpPacket + 14; \
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*(_SourceRoutingLength) = TmpPacket[14] & 0x1f; \
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} else { \
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*(_SourceRouting) = NULL; \
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} \
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} else { \
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*(_SourceRouting) = NULL; \
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} \
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}
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//++
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//
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// VOID
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// MacIsMulticast(
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// IN PNBF_NDIS_IDENTIFICATION MacInfo,
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// IN PVOID Packet,
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// OUT PBOOLEAN Multicast
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// );
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//
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// Routine Description:
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//
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// Returns TRUE if the packet is sent to the multicast address.
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//
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// Arguments:
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//
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// MacInfo - Describes the MAC we wish to decode.
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//
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// Packet - The packet data.
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//
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// Multicast - Returns the result.
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//
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// Return Value:
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//
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// None.
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//
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//--
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#define MacIsMulticast(_MacInfo, _Packet, _Multicast) \
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{ \
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PUCHAR TmpPacket = (PUCHAR)(_Packet); \
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\
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switch ((_MacInfo)->MediumType) { \
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case NdisMedium802_5: \
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*(_Multicast) = ((TmpPacket[2] & 0x80) != 0); \
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break; \
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default: \
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*(_Multicast) = ((TmpPacket[0] & 0x01) != 0); \
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break; \
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} \
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}
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//++
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//
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// VOID
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// MacReturnPacketLength(
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// IN PNBF_NDIS_IDENTIFICATION MacInfo,
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// IN PVOID Header,
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// IN UINT PacketLength,
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// OUT PUINT DataLength
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// );
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//
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// Routine Description:
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//
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// Returns the length of data in the packet given the header.
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//
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// Arguments:
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//
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// MacInfo - Describes the MAC we wish to decode.
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//
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// Header - The packet header.
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//
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// PacketLength - The length of the data (not including header).
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//
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// DataLength - Returns the length of the data. Unchanged if the
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// packet is not recognized. Should be initialized by caller to 0.
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//
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// Return Value:
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//
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// None.
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//
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//--
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#define MacReturnPacketLength(_MacInfo, _Header, _HeaderLength, _PacketLength, _DataLength, _LookaheadBuffer, _LookaheadBufferLength) \
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{ \
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PUCHAR TmpPacket = (PUCHAR)(_Header); \
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UINT TmpLength; \
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\
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switch ((_MacInfo)->MediumType) { \
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case NdisMedium802_3: \
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if ((_HeaderLength) >= 14) { \
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TmpLength = (TmpPacket[12] << 8) | TmpPacket[13]; \
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if (TmpLength <= 0x600) { \
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if (TmpLength <= (_PacketLength)) { \
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*(_DataLength) = TmpLength; \
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} \
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} \
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} \
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break; \
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case NdisMedium802_5: \
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if (((_HeaderLength) >= 14) && \
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(!(TmpPacket[8] & 0x80) || \
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((_HeaderLength) >= \
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(UINT)(14 + (TmpPacket[14] & 0x1f))))) { \
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*(_DataLength) = (_PacketLength); \
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} \
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break; \
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case NdisMediumFddi: \
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if ((_HeaderLength) >= 13) { \
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*(_DataLength) = (_PacketLength); \
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} \
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break; \
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case NdisMediumDix: \
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if ((TmpPacket[12] == 0x80) && (TmpPacket[13] == 0xd5)) { \
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|
|
if (*(_LookaheadBufferLength) >= 3) { \
|
|||
|
|
TmpPacket = (PUCHAR)(*(_LookaheadBuffer)); \
|
|||
|
|
TmpLength = (TmpPacket[0] << 8) | TmpPacket[1]; \
|
|||
|
|
if (TmpLength <= (_PacketLength)-3) { \
|
|||
|
|
*(_DataLength) = TmpLength; \
|
|||
|
|
*(_LookaheadBuffer) = (PVOID)(TmpPacket + 3); \
|
|||
|
|
*(_LookaheadBufferLength) -= 3; \
|
|||
|
|
} \
|
|||
|
|
} \
|
|||
|
|
} \
|
|||
|
|
break; \
|
|||
|
|
} \
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//++
|
|||
|
|
//
|
|||
|
|
// VOID
|
|||
|
|
// MacReturnHeaderLength(
|
|||
|
|
// IN PNBF_NDIS_IDENTIFICATION MacInfo,
|
|||
|
|
// IN PVOID Packet,
|
|||
|
|
// OUT PVOID HeaderLength,
|
|||
|
|
// );
|
|||
|
|
//
|
|||
|
|
// Routine Description:
|
|||
|
|
//
|
|||
|
|
// Returns the length of the MAC header in a packet (this
|
|||
|
|
// is used for loopback indications to separate header
|
|||
|
|
// and data).
|
|||
|
|
//
|
|||
|
|
// Arguments:
|
|||
|
|
//
|
|||
|
|
// MacInfo - Describes the MAC we wish to decode.
|
|||
|
|
//
|
|||
|
|
// Header - The packet header.
|
|||
|
|
//
|
|||
|
|
// HeaderLength - Returns the length of the header.
|
|||
|
|
//
|
|||
|
|
// Return Value:
|
|||
|
|
//
|
|||
|
|
// None.
|
|||
|
|
//
|
|||
|
|
//--
|
|||
|
|
|
|||
|
|
#define MacReturnHeaderLength(_MacInfo, _Header, _HeaderLength) \
|
|||
|
|
{ \
|
|||
|
|
PUCHAR TmpPacket = (PUCHAR)(_Header); \
|
|||
|
|
\
|
|||
|
|
switch ((_MacInfo)->MediumType) { \
|
|||
|
|
case NdisMedium802_3: \
|
|||
|
|
case NdisMediumDix: \
|
|||
|
|
*(_HeaderLength) = 14; \
|
|||
|
|
break; \
|
|||
|
|
case NdisMedium802_5: \
|
|||
|
|
if (TmpPacket[8] & 0x80) { \
|
|||
|
|
*(_HeaderLength) = (TmpPacket[14] & 0x1f) + 14; \
|
|||
|
|
} else { \
|
|||
|
|
*(_HeaderLength) = 14; \
|
|||
|
|
} \
|
|||
|
|
break; \
|
|||
|
|
case NdisMediumFddi: \
|
|||
|
|
*(_HeaderLength) = 13; \
|
|||
|
|
break; \
|
|||
|
|
} \
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//++
|
|||
|
|
//
|
|||
|
|
// VOID
|
|||
|
|
// MacReturnSingleRouteSR(
|
|||
|
|
// IN PNBF_NDIS_IDENTIFICATION MacInfo,
|
|||
|
|
// OUT PVOID * SingleRouteSR,
|
|||
|
|
// OUT PUINT SingleRouteSRLength
|
|||
|
|
// );
|
|||
|
|
//
|
|||
|
|
// Routine Description:
|
|||
|
|
//
|
|||
|
|
// Returns the a pointer to the standard single route broadcast
|
|||
|
|
// source routing information for the media type. This is used
|
|||
|
|
// for ADD_NAME_QUERY, DATAGRAM, NAME_IN_CONFLICT, NAME_QUERY,
|
|||
|
|
// and STATUS_QUERY frames.
|
|||
|
|
//
|
|||
|
|
// Arguments:
|
|||
|
|
//
|
|||
|
|
// MacInfo - Describes the MAC we wish to decode.
|
|||
|
|
//
|
|||
|
|
// SingleRouteSR - Returns a pointer to the data.
|
|||
|
|
//
|
|||
|
|
// SingleRouteSRLength - The length of SingleRouteSR.
|
|||
|
|
//
|
|||
|
|
// Return Value:
|
|||
|
|
//
|
|||
|
|
// None.
|
|||
|
|
//
|
|||
|
|
//--
|
|||
|
|
|
|||
|
|
#define MacReturnSingleRouteSR(_MacInfo, _SingleRouteSR, _SingleRouteSRLength) \
|
|||
|
|
{ \
|
|||
|
|
switch ((_MacInfo)->MediumType) { \
|
|||
|
|
case NdisMedium802_5: \
|
|||
|
|
*(_SingleRouteSR) = SingleRouteSourceRouting; \
|
|||
|
|
*(_SingleRouteSRLength) = DefaultSourceRoutingLength; \
|
|||
|
|
break; \
|
|||
|
|
default: \
|
|||
|
|
*(_SingleRouteSR) = NULL; \
|
|||
|
|
break; \
|
|||
|
|
} \
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
//++
|
|||
|
|
//
|
|||
|
|
// VOID
|
|||
|
|
// MacReturnGeneralRouteSR(
|
|||
|
|
// IN PNBF_NDIS_IDENTIFICATION MacInfo,
|
|||
|
|
// OUT PVOID * GeneralRouteSR,
|
|||
|
|
// OUT PUINT GeneralRouteSRLength
|
|||
|
|
// );
|
|||
|
|
//
|
|||
|
|
// Routine Description:
|
|||
|
|
//
|
|||
|
|
// Returns the a pointer to the standard general route broadcast
|
|||
|
|
// source routing information for the media type. This is used
|
|||
|
|
// for NAME_RECOGNIZED frames.
|
|||
|
|
//
|
|||
|
|
// Arguments:
|
|||
|
|
//
|
|||
|
|
// MacInfo - Describes the MAC we wish to decode.
|
|||
|
|
//
|
|||
|
|
// GeneralRouteSR - Returns a pointer to the data.
|
|||
|
|
//
|
|||
|
|
// GeneralRouteSRLength - The length of GeneralRouteSR.
|
|||
|
|
//
|
|||
|
|
// Return Value:
|
|||
|
|
//
|
|||
|
|
// None.
|
|||
|
|
//
|
|||
|
|
//--
|
|||
|
|
|
|||
|
|
#define MacReturnGeneralRouteSR(_MacInfo, _GeneralRouteSR, _GeneralRouteSRLength) \
|
|||
|
|
{ \
|
|||
|
|
switch ((_MacInfo)->MediumType) { \
|
|||
|
|
case NdisMedium802_5: \
|
|||
|
|
*(_GeneralRouteSR) = GeneralRouteSourceRouting; \
|
|||
|
|
*(_GeneralRouteSRLength) = DefaultSourceRoutingLength; \
|
|||
|
|
break; \
|
|||
|
|
default: \
|
|||
|
|
*(_GeneralRouteSR) = NULL; \
|
|||
|
|
break; \
|
|||
|
|
} \
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#if 0
|
|||
|
|
|
|||
|
|
//++
|
|||
|
|
//
|
|||
|
|
// VOID
|
|||
|
|
// MacCreateGeneralRouteReplySR(
|
|||
|
|
// IN PNBF_NDIS_IDENTIFICATION MacInfo,
|
|||
|
|
// IN PUCHAR ExistingSR,
|
|||
|
|
// IN UINT ExistingSRLength,
|
|||
|
|
// OUT PUCHAR * NewSR
|
|||
|
|
// );
|
|||
|
|
//
|
|||
|
|
// Routine Description:
|
|||
|
|
//
|
|||
|
|
// This modifies an existing source routing entry to make
|
|||
|
|
// it into a general-route source routing entry. The assumption
|
|||
|
|
// is that is to reply to existing source routing, so the
|
|||
|
|
// direction bit is also reversed. In addition, if it is
|
|||
|
|
// determined that no source routing is needed in the reply,
|
|||
|
|
// then NULL is returned.
|
|||
|
|
//
|
|||
|
|
// Note that the information is modified in-place, but a
|
|||
|
|
// separate pointer is returned (to allow NULL to be returned).
|
|||
|
|
//
|
|||
|
|
// Arguments:
|
|||
|
|
//
|
|||
|
|
// MacInfo - Describes the MAC we wish to decode.
|
|||
|
|
//
|
|||
|
|
// ExistingSR - The existing source routing to be modified.
|
|||
|
|
//
|
|||
|
|
// Return Value:
|
|||
|
|
//
|
|||
|
|
// None.
|
|||
|
|
//
|
|||
|
|
//--
|
|||
|
|
|
|||
|
|
#define MacCreateGeneralRouteReplySR(_MacInfo, _ExistingSR, _ExistingSRLength, _NewSR) \
|
|||
|
|
{ \
|
|||
|
|
if (_ExistingSR) { \
|
|||
|
|
PUCHAR TmpSR = (PUCHAR)(_ExistingSR); \
|
|||
|
|
switch ((_MacInfo)->MediumType) { \
|
|||
|
|
case NdisMedium802_5: \
|
|||
|
|
TmpSR[0] = (TmpSR[0] & 0x1f) | 0x80; \
|
|||
|
|
TmpSR[1] = (TmpSR[1] ^ 0x80); \
|
|||
|
|
*(_NewSR) = (_ExistingSR); \
|
|||
|
|
break; \
|
|||
|
|
default: \
|
|||
|
|
*(_NewSR) = (_ExistingSR); \
|
|||
|
|
break; \
|
|||
|
|
} \
|
|||
|
|
} else { \
|
|||
|
|
*(_NewSR) = NULL; \
|
|||
|
|
} \
|
|||
|
|
}
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
//++
|
|||
|
|
//
|
|||
|
|
// VOID
|
|||
|
|
// MacCreateNonBroadcastReplySR(
|
|||
|
|
// IN PNBF_NDIS_IDENTIFICATION MacInfo,
|
|||
|
|
// IN PUCHAR ExistingSR,
|
|||
|
|
// IN UINT ExistingSRLength,
|
|||
|
|
// OUT PUCHAR * NewSR
|
|||
|
|
// );
|
|||
|
|
//
|
|||
|
|
// Routine Description:
|
|||
|
|
//
|
|||
|
|
// This modifies an existing source routing entry to make
|
|||
|
|
// it into a non-broadcast source routing entry. The assumption
|
|||
|
|
// is that is to reply to existing source routing, so the
|
|||
|
|
// direction bit is also reversed. In addition, if it is
|
|||
|
|
// determined that no source routing is needed in the reply,
|
|||
|
|
// then NULL is returned.
|
|||
|
|
//
|
|||
|
|
// Note that the information is modified in-place, but a
|
|||
|
|
// separate pointer is returned (to allow NULL to be returned).
|
|||
|
|
//
|
|||
|
|
// Arguments:
|
|||
|
|
//
|
|||
|
|
// MacInfo - Describes the MAC we wish to decode.
|
|||
|
|
//
|
|||
|
|
// ExistingSR - The existing source routing to be modified.
|
|||
|
|
//
|
|||
|
|
// Return Value:
|
|||
|
|
//
|
|||
|
|
// None.
|
|||
|
|
//
|
|||
|
|
//--
|
|||
|
|
|
|||
|
|
#define MacCreateNonBroadcastReplySR(_MacInfo, _ExistingSR, _ExistingSRLength, _NewSR) \
|
|||
|
|
{ \
|
|||
|
|
if (_ExistingSR) { \
|
|||
|
|
PUCHAR TmpSR = (PUCHAR)(_ExistingSR); \
|
|||
|
|
switch ((_MacInfo)->MediumType) { \
|
|||
|
|
case NdisMedium802_5: \
|
|||
|
|
if ((_ExistingSRLength) == 2) { \
|
|||
|
|
*(_NewSR) = NULL; \
|
|||
|
|
} else { \
|
|||
|
|
TmpSR[0] = (TmpSR[0] & 0x1f); \
|
|||
|
|
TmpSR[1] = (TmpSR[1] ^ 0x80); \
|
|||
|
|
*(_NewSR) = (_ExistingSR); \
|
|||
|
|
} \
|
|||
|
|
break; \
|
|||
|
|
default: \
|
|||
|
|
*(_NewSR) = (_ExistingSR); \
|
|||
|
|
break; \
|
|||
|
|
} \
|
|||
|
|
} else { \
|
|||
|
|
*(_NewSR) = NULL; \
|
|||
|
|
} \
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
//++
|
|||
|
|
//
|
|||
|
|
// VOID
|
|||
|
|
// MacModifyHeader(
|
|||
|
|
// IN PNBF_NDIS_IDENTIFICATION MacInfo,
|
|||
|
|
// IN PUCHAR Header,
|
|||
|
|
// IN UINT PacketLength
|
|||
|
|
// );
|
|||
|
|
//
|
|||
|
|
// Routine Description:
|
|||
|
|
//
|
|||
|
|
// Modifies a pre-built packet header to include the
|
|||
|
|
// packet length. Used for connection-oriented traffic
|
|||
|
|
// where the header is pre-built.
|
|||
|
|
//
|
|||
|
|
// Arguments:
|
|||
|
|
//
|
|||
|
|
// MacInfo - Describes the MAC we wish to decode.
|
|||
|
|
//
|
|||
|
|
// Header - The header to modify.
|
|||
|
|
//
|
|||
|
|
// PacketLength - Packet length (not including the header).
|
|||
|
|
// Currently this is the only field that cannot be pre-built.
|
|||
|
|
//
|
|||
|
|
// Return Value:
|
|||
|
|
//
|
|||
|
|
// None.
|
|||
|
|
//
|
|||
|
|
//--
|
|||
|
|
|
|||
|
|
#define MacModifyHeader(_MacInfo, _Header, _PacketLength) \
|
|||
|
|
{ \
|
|||
|
|
switch ((_MacInfo)->MediumType) { \
|
|||
|
|
case NdisMedium802_3: \
|
|||
|
|
(_Header)[12] = (UCHAR)((_PacketLength) >> 8); \
|
|||
|
|
(_Header)[13] = (UCHAR)((_PacketLength) & 0xff); \
|
|||
|
|
break; \
|
|||
|
|
case NdisMediumDix: \
|
|||
|
|
(_Header)[14] = (UCHAR)((_PacketLength) >> 8); \
|
|||
|
|
(_Header)[15] = (UCHAR)((_PacketLength) & 0xff); \
|
|||
|
|
break; \
|
|||
|
|
} \
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
//++
|
|||
|
|
//
|
|||
|
|
// VOID
|
|||
|
|
// MacReturnMagicAddress(
|
|||
|
|
// IN PNBF_NDIS_IDENTIFICATION MacInfo,
|
|||
|
|
// IN PVOID Address,
|
|||
|
|
// OUT PULARGE_INTEGER Magic
|
|||
|
|
// );
|
|||
|
|
//
|
|||
|
|
// Routine Description:
|
|||
|
|
//
|
|||
|
|
// MacReturnMagicAddress returns the link as a 64 bit number.
|
|||
|
|
// We then find the link in the link trees by doing a large
|
|||
|
|
// integer comparison.
|
|||
|
|
//
|
|||
|
|
// The number is constructed by assigning the last four bytes of
|
|||
|
|
// the address as the low longword, and the first two bytes as
|
|||
|
|
// the high one. For 802_5 we need to mask off the source routing
|
|||
|
|
// bit in byte 0 of the address.
|
|||
|
|
//
|
|||
|
|
// Arguments:
|
|||
|
|
//
|
|||
|
|
// MacInfo - Describes the MAC we wish to decode.
|
|||
|
|
//
|
|||
|
|
// Address - The address we are encoding.
|
|||
|
|
//
|
|||
|
|
// Magic - Returns the magic number for this address.
|
|||
|
|
//
|
|||
|
|
// Return Value:
|
|||
|
|
//
|
|||
|
|
// None.
|
|||
|
|
//
|
|||
|
|
//--
|
|||
|
|
|
|||
|
|
#define MacReturnMagicAddress(_MacInfo, _Address, _Magic) \
|
|||
|
|
{ \
|
|||
|
|
PUCHAR TempAddr = (PUCHAR)(_Address); \
|
|||
|
|
\
|
|||
|
|
(_Magic)->LowPart = *((LONG UNALIGNED *)(TempAddr + 2)); \
|
|||
|
|
if ((_MacInfo)->MediumType == NdisMedium802_5) { \
|
|||
|
|
(_Magic)->HighPart = ((TempAddr[0] & 0x7f) << 8) + TempAddr[1]; \
|
|||
|
|
} else { \
|
|||
|
|
(_Magic)->HighPart = (TempAddr[0] << 8) + TempAddr[1]; \
|
|||
|
|
} \
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
VOID
|
|||
|
|
MacSetNetBIOSMulticast (
|
|||
|
|
IN NDIS_MEDIUM Type,
|
|||
|
|
IN PUCHAR Buffer
|
|||
|
|
);
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
// VOID
|
|||
|
|
// NbfSetNdisPacketLength (
|
|||
|
|
// IN NDIS_PACKET Packet,
|
|||
|
|
// IN ULONG Length
|
|||
|
|
// );
|
|||
|
|
//
|
|||
|
|
// NB: This is not a general purpose macro; it assumes that we are setting the
|
|||
|
|
// length of an NDIS packet with only one NDIS_BUFFER chained. We do
|
|||
|
|
// this to save time during the sending of short control packets.
|
|||
|
|
//
|
|||
|
|
|
|||
|
|
#define NbfSetNdisPacketLength(_packet,_length) { \
|
|||
|
|
PNDIS_BUFFER NdisBuffer; \
|
|||
|
|
NdisQueryPacket((_packet), NULL, NULL, &NdisBuffer, NULL); \
|
|||
|
|
NdisAdjustBufferLength(NdisBuffer, (_length)); \
|
|||
|
|
NdisRecalculatePacketCounts(_packet); \
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endif // ifdef _MAC_
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