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29 lines
2.0 KiB
29 lines
2.0 KiB
/*
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* File: load.h
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* Description: This file contains function prototypes for the load
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* module packet filtering extensions.
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* History: Created by shouse, 1.11.02
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*/
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/* This function retrieves all necessary state from the load module in order to determine whether
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a given packet would be accepted by the load module in its current state and why or why not. */
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void LoadFilter (ULONG64 pLoad, ULONG dwClientIPAddress, ULONG dwClientPort, ULONG dwServerIPAddress, ULONG dwServerPort, USHORT wProtocol, UCHAR cFlags, BOOL bLimitMap, BOOL bReverse);
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/* This function retrieves the appropriate port rule given the server side parameters of the connection. */
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ULONG64 LoadPortRuleLookup (ULONG64 pLoad, ULONG dwServerIPAddress, ULONG dwServerPort, BOOL bIsTCP, BOOL * bIsDefault);
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/* This function searches for and returns any existing descriptor matching the given IP tuple; otherwise, it returns NULL (0). */
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ULONG64 LoadFindDescriptor (ULONG64 pLoad, ULONG index, ULONG dwServerIPAddress, ULONG dwServerPort, ULONG dwClientIPAddress, ULONG dwClientPort, USHORT wProtocol);
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/* This function determines whether a given IP tuple matches a given connection descriptor. */
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BOOL LoadConnectionMatch (ULONG64 pDescriptor, ULONG dwServerIPAddress, ULONG dwServerPort, ULONG dwClientIPAddress, ULONG dwClientPort, USHORT wProtocol);
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/* This function determines whether or not a given NLB instance is configured for BDA teaming and returns the
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load module pointer that should be used. */
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BOOL AcquireLoad (ULONG64 pContext, PULONG64 pLoad, BOOL * pbRefused);
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/* This function is a simple hash based on the IP 4-tuple used to locate state for the connection. */
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ULONG LoadSimpleHash (ULONG dwServerIPAddress, ULONG dwServerPort, ULONG dwClientIPAddress, ULONG dwClientPort);
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/* This is the conventional NLB hashing algorithm, which ends up invoking a light-weight encryption algorithm to calculate a hash. */
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ULONG LoadComplexHash (ULONG dwServerIPAddress, ULONG dwServerPort, ULONG dwClientIPAddress, ULONG dwClientPort, ULONG dwAffinity, BOOL bReverse, BOOL bLimitMap);
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