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Diffstat (limited to 'include/crc.h')
| -rw-r--r-- | include/crc.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/include/crc.h b/include/crc.h new file mode 100644 index 0000000000..63399bf8f6 --- /dev/null +++ b/include/crc.h @@ -0,0 +1,101 @@ +//========================================================================== +// +// crc.h +// +// Interface for the CRC algorithms. +// +//========================================================================== +//####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2002 Andrew Lunn +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License along +// with eCos; if not, write to the Free Software Foundation, Inc., +// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or inline functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. However the source code for this file must still be made available +// in accordance with section (3) of the GNU General Public License. +// +// This exception does not invalidate any other reasons why a work based on +// this file might be covered by the GNU General Public License. +// +// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. +// at http://sources.redhat.com/ecos/ecos-license/ +// ------------------------------------------- +//####ECOSGPLCOPYRIGHTEND#### +//========================================================================== +//#####DESCRIPTIONBEGIN#### +// +// Author(s): Andrew Lunn +// Contributors: Andrew Lunn +// Date: 2002-08-06 +// Purpose: +// Description: +// +// This code is part of eCos (tm). +// +//####DESCRIPTIONEND#### +// +//========================================================================== + +#ifndef _SERVICES_CRC_CRC_H_ +#define _SERVICES_CRC_CRC_H_ + +#include <linux/types.h> + +#ifndef __externC +# ifdef __cplusplus +# define __externC extern "C" +# else +# define __externC extern +# endif +#endif + +// Compute a CRC, using the POSIX 1003 definition +extern uint32_t +cyg_posix_crc32(unsigned char *s, int len); + +// Gary S. Brown's 32 bit CRC + +extern uint32_t +cyg_crc32(unsigned char *s, int len); + +// Gary S. Brown's 32 bit CRC, but accumulate the result from a +// previous CRC calculation + +extern uint32_t +cyg_crc32_accumulate(uint32_t crc, unsigned char *s, int len); + +// Ethernet FCS Algorithm + +extern uint32_t +cyg_ether_crc32(unsigned char *s, int len); + +// Ethernet FCS algorithm, but accumulate the result from a previous +// CRC calculation. + +extern uint32_t +cyg_ether_crc32_accumulate(uint32_t crc, unsigned char *s, int len); + +// 16 bit CRC with polynomial x^16+x^12+x^5+1 + +extern uint16_t cyg_crc16(unsigned char *s, int len); + +#endif // _SERVICES_CRC_CRC_H_ + + + |