162 lines
3.9 KiB
C
162 lines
3.9 KiB
C
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/*++
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Copyright (c) 1995-1998 Microsoft Corporation
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Module Name:
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lookup.h
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Abstract:
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Contains interface for a generalized best
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matching prefix lookup data structure.
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Author:
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Chaitanya Kodeboyina (chaitk) 20-Jun-1998
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Revision History:
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--*/
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#ifndef __ROUTING_LOOKUP_H__
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#define __ROUTING_LOOKUP_H__
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//
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// Flags used to control the information dumped by the DumpTable func.
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//
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#define SUMMARY 0x00
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#define STATS 0x01
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#define ITEMS 0x02
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#define VERBOSE 0xFF
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//
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// Field used to link the data item in the lookup structure
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// [ Eg: A LIST_ENTRY field is used to link into a d-list ]
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//
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typedef struct _LOOKUP_LINKAGE
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{
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PVOID Pointer1; // Usage depends on implementation
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PVOID Pointer2; // Usage depends on implementation
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}
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LOOKUP_LINKAGE, *PLOOKUP_LINKAGE;
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//
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// Context returned in Search useful in following Inserts and Deletes.
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//
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// This context remains valid after a search only until the
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// read/write lock that is taken for the search is released.
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//
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typedef struct _LOOKUP_CONTEXT
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{
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PVOID Context1; // Usage depends on implementation
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PVOID Context2; // Usage depends on implementation
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PVOID Context3; // Usage depends on implementation
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PVOID Context4; // Usage depends on implementation
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}
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LOOKUP_CONTEXT, *PLOOKUP_CONTEXT;
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DWORD
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WINAPI
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CreateTable(
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IN UINT MaxBytes,
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OUT HANDLE *Table
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);
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DWORD
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WINAPI
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InsertIntoTable(
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IN HANDLE Table,
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IN USHORT NumBits,
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IN PUCHAR KeyBits,
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IN PLOOKUP_CONTEXT Context OPTIONAL,
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IN PLOOKUP_LINKAGE Data
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);
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DWORD
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WINAPI
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DeleteFromTable(
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IN HANDLE Table,
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IN USHORT NumBits,
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IN PUCHAR KeyBits,
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IN PLOOKUP_CONTEXT Context OPTIONAL,
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OUT PLOOKUP_LINKAGE *Data
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);
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DWORD
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WINAPI
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SearchInTable(
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IN HANDLE Table,
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IN USHORT NumBits,
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IN PUCHAR KeyBits,
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OUT PLOOKUP_CONTEXT Context OPTIONAL,
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OUT PLOOKUP_LINKAGE *Data
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);
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DWORD
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WINAPI
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BestMatchInTable(
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IN HANDLE Table,
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IN PUCHAR KeyBits,
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OUT PLOOKUP_LINKAGE *BestData
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);
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DWORD
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WINAPI
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NextMatchInTable(
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IN HANDLE Table,
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IN PLOOKUP_LINKAGE BestData,
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OUT PLOOKUP_LINKAGE *NextBestData
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);
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DWORD
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WINAPI
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EnumOverTable(
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IN HANDLE Table,
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IN OUT PUSHORT StartNumBits,
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IN OUT PUCHAR StartKeyBits,
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IN OUT PLOOKUP_CONTEXT Context OPTIONAL,
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IN USHORT StopNumBits OPTIONAL,
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IN PUCHAR StopKeyBits OPTIONAL,
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IN OUT PUINT NumItems,
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OUT PLOOKUP_LINKAGE *DataItems
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);
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DWORD
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WINAPI
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DestroyTable(
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IN HANDLE Table
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);
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DWORD
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WINAPI
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GetStatsFromTable(
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IN HANDLE Table,
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OUT PVOID Stats
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);
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BOOL
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WINAPI
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CheckTable(
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IN HANDLE Table
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);
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VOID
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WINAPI
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DumpTable(
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IN HANDLE Table,
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IN DWORD Flags
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);
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#ifdef __cplusplus
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}
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#endif
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#endif //__ROUTING_LOOKUP_H__
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