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/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
dlmacro.h
Abstract:
This module all c- macros of 802.2 data link driver.
Author:
Antti Saarenheimo (o-anttis) 17-MAY-1991
Revision History:
--*/
//
// This routine just swaps the bits within bytes of
// a network address, used only for a fast address
// swapping to ethernet frame
//
#define SwapCopy6( a, b ) (a)[0]=Swap[(b)[0]];\
(a)[1]=Swap[(b)[1]];\
(a)[2]=Swap[(b)[2]];\
(a)[3]=Swap[(b)[3]];\
(a)[4]=Swap[(b)[4]];\
(a)[5]=Swap[(b)[5]]
//
// Copies and swaps the memory unconditionally
//
//VOID
//SwappingMemCpy(
// IN PUCHAR pDest,
// IN PUCHAR pSrc,
// IN UINT Len
// )
//
#define SwappingMemCpy( pDest, pSrc, Len ) {\
UINT i; \
for (i = 0; i < Len; i++) \
((PUCHAR)pDest)[i] = Swap[ ((PUCHAR)pSrc)[i] ]; \
}
/*++
VOID
LlcResetPacket(
IN OUT PLLC_NDIS_PACKET pNdisPacket
)
Routine Description:
Function rets the private partion of a NDIS packet.
Arguments:
pNdisPacket -
Return Value:
None
--*/
#define ResetNdisPacket( pNdisPacket ) { \
(pNdisPacket)->private.PhysicalCount = 0;\
(pNdisPacket)->private.TotalLength = 0;\
(pNdisPacket)->private.Head = 0;\
(pNdisPacket)->private.Tail = 0;\
(pNdisPacket)->private.Count = 0;\
}
/*++
AllocateCompletionPacket(
IN PLLC_OBJECT pLlcObject,
IN UINT CompletionCode,
IN PLLC_PACKET pPacket
)
Routine Description:
The function inserts and initializes a command completion packet
of an asynchronous command.
Arguments:
pLlcObject - LLC object (link, sap or direct)
CompletionCode - command completion code returned to upper protocol
Return Value:
STATUS_SUCCESS
DLC_STATUS_NO_MEMORY
--*/
#define AllocateCompletionPacket( pLlcObject, CompletionCode, pPacket ) {\
pPacket->pBinding = pLlcObject->Gen.pLlcBinding; \
pPacket->Data.Completion.CompletedCommand = (UCHAR)CompletionCode; \
pPacket->Data.Completion.hClientHandle = pLlcObject->Gen.hClientHandle; \
pPacket->pNext = pLlcObject->Gen.pCompletionPackets; \
pLlcObject->Gen.pCompletionPackets = pPacket; \
}
#define RunStateMachineCommand( pLink, uiInput ) \
RunStateMachine( (PDATA_LINK)pLink, (USHORT)uiInput, 0, 0 )
//
// VOID
// ScheduleQueue(
// IN PLIST_ENTRY ListHead
// );
//
// The macro swaps the list element from the head to the tail
// if there are more than one element in the list.
//
#define ScheduleQueue( ListHead ) \
if ((ListHead)->Blink != (ListHead)->Flink) \
{ \
PLIST_ENTRY pListEntry; \
pListEntry = LlcRemoveHeadList( (ListHead) ); \
LlcInsertTailList( (ListHead), pListEntry ); \
}
#define ReferenceObject( pStation ) (pStation)->Gen.ReferenceCount++
//
// We have made the most common functions macroes to
// make the main code path as fast as possible.
// With the debug switch we use their local versions.
//
#if LLC_DBG >= 2
#define SEARCH_LINK( pAdapterContext, LanAddr, pLink ) \
pLink = SearchLink( pAdapterContext, LanAddr )
#else
/*++
SEARCH_LINK(
IN PADAPTER_CONTEXT pAdapterContext,
IN LAN802_ADDRESS LanAddr,
IN PDATA_LINK pLink
)
Routine Description:
The routine searches a link from the hash table.
All links in the same hash node has been saved to a simple
link list.
Note: the full link address is actually 61 bits long =
7 (SSAP) + 7 (DSAP) + 47 (any non-broadcast source address).
We save the address information into two ULONGs, that are used
in the actual search. The hash key will be calculated by xoring
all 8 bytes in the address.
Arguments:
pAdapterContext - MAC adapter context of data link driver
LanAddr - the complete 64 bit address of link (48 bit source addr + saps)
Return Value:
PDATA_LINK - pointer to LLC link object or NULL if not found
--*/
#define SEARCH_LINK( pAdapterContext, LanAddr, pLink )\
{ \
USHORT usHash; \
usHash = \
LanAddr.aus.Raw[0] ^ LanAddr.aus.Raw[1] ^ \
LanAddr.aus.Raw[2] ^ LanAddr.aus.Raw[3]; \
pLink = \
pAdapterContext->aLinkHash[ \
((((PUCHAR)&usHash)[0] ^ ((PUCHAR)&usHash)[1]) % LINK_HASH_SIZE)]; \
while (pLink != NULL && \
(pLink->LinkAddr.ul.Low != LanAddr.ul.Low || \
pLink->LinkAddr.ul.High != LanAddr.ul.High)) \
{ \
pLink = pLink->pNextNode; \
} \
}
#endif
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