reactos/drivers/net/tcpip/include/checksum.h

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS TCP/IP protocol driver
   4  * FILE:        include/checksum.h
   5  * PURPOSE:     Checksum routine definitions
   6  */
   7 #ifndef __CHECKSUM_H
   8 #define __CHECKSUM_H
   9
  10
  11 ULONG ChecksumCompute(
  12     PVOID Data,
  13     UINT Count,
  14     ULONG Seed);
  15
  16 #define IPv4Checksum(Data, Count, Seed)(ChecksumCompute(Data, Count, Seed))
  17
  18 /*
  19  * Macro to check for a correct checksum
  20  * BOOLEAN CorrectChecksum(PVOID Data, UINT Count)
  21  */
  22 #define CorrectChecksum(Data, Count) \
  23     (BOOLEAN)(IPv4Checksum(Data, Count, 0) == DH2N(0x0000FFFF))
  24
  25 #endif /* __CHECKSUM_H */
  26
  27 /* EOF */