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