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Leaked source code of windows server 2003
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windows-server-2003/net/wlbs/nlbkd/load.h

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  1. /*
  2. * File: load.h
  3. * Description: This file contains function prototypes for the load
  4. * module packet filtering extensions.
  5. * History: Created by shouse, 1.11.02
  6. */
  8. /* This function retrieves all necessary state from the load module in order to determine whether
  9. a given packet would be accepted by the load module in its current state and why or why not. */
  10. void LoadFilter (ULONG64 pLoad, ULONG dwClientIPAddress, ULONG dwClientPort, ULONG dwServerIPAddress, ULONG dwServerPort, USHORT wProtocol, UCHAR cFlags, BOOL bLimitMap, BOOL bReverse);
  12. /* This function retrieves the appropriate port rule given the server side parameters of the connection. */
  13. ULONG64 LoadPortRuleLookup (ULONG64 pLoad, ULONG dwServerIPAddress, ULONG dwServerPort, BOOL bIsTCP, BOOL * bIsDefault);
  15. /* This function searches for and returns any existing descriptor matching the given IP tuple; otherwise, it returns NULL (0). */
  16. ULONG64 LoadFindDescriptor (ULONG64 pLoad, ULONG index, ULONG dwServerIPAddress, ULONG dwServerPort, ULONG dwClientIPAddress, ULONG dwClientPort, USHORT wProtocol);
  18. /* This function determines whether a given IP tuple matches a given connection descriptor. */
  19. BOOL LoadConnectionMatch (ULONG64 pDescriptor, ULONG dwServerIPAddress, ULONG dwServerPort, ULONG dwClientIPAddress, ULONG dwClientPort, USHORT wProtocol);
  21. /* This function determines whether or not a given NLB instance is configured for BDA teaming and returns the
  22. load module pointer that should be used. */
  23. BOOL AcquireLoad (ULONG64 pContext, PULONG64 pLoad, BOOL * pbRefused);
  25. /* This function is a simple hash based on the IP 4-tuple used to locate state for the connection. */
  26. ULONG LoadSimpleHash (ULONG dwServerIPAddress, ULONG dwServerPort, ULONG dwClientIPAddress, ULONG dwClientPort);
  28. /* This is the conventional NLB hashing algorithm, which ends up invoking a light-weight encryption algorithm to calculate a hash. */
  29. ULONG LoadComplexHash (ULONG dwServerIPAddress, ULONG dwServerPort, ULONG dwClientIPAddress, ULONG dwClientPort, ULONG dwAffinity, BOOL bReverse, BOOL bLimitMap);