mirror of https://github.com/hak5/openwrt.git
110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
|
//==========================================================================
|
||
|
|
//
|
||
|
|
// 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_
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
#include <cyg/infra/cyg_type.h>
|
||
|
|
#else
|
||
|
|
#include <stdint.h>
|
||
|
|
typedef uint32_t cyg_uint32;
|
||
|
|
typedef uint16_t cyg_uint16;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef __externC
|
||
|
|
# ifdef __cplusplus
|
||
|
|
# define __externC extern "C"
|
||
|
|
# else
|
||
|
|
# define __externC extern
|
||
|
|
# endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Compute a CRC, using the POSIX 1003 definition
|
||
|
|
|
||
|
|
__externC cyg_uint32
|
||
|
|
cyg_posix_crc32(unsigned char *s, int len);
|
||
|
|
|
||
|
|
// Gary S. Brown's 32 bit CRC
|
||
|
|
|
||
|
|
__externC cyg_uint32
|
||
|
|
cyg_crc32(unsigned char *s, int len);
|
||
|
|
|
||
|
|
// Gary S. Brown's 32 bit CRC, but accumulate the result from a
|
||
|
|
// previous CRC calculation
|
||
|
|
|
||
|
|
__externC cyg_uint32
|
||
|
|
cyg_crc32_accumulate(cyg_uint32 crc, unsigned char *s, int len);
|
||
|
|
|
||
|
|
// Ethernet FCS Algorithm
|
||
|
|
|
||
|
|
__externC cyg_uint32
|
||
|
|
cyg_ether_crc32(unsigned char *s, int len);
|
||
|
|
|
||
|
|
// Ethernet FCS algorithm, but accumulate the result from a previous
|
||
|
|
// CRC calculation.
|
||
|
|
|
||
|
|
__externC cyg_uint32
|
||
|
|
cyg_ether_crc32_accumulate(cyg_uint32 crc, unsigned char *s, int len);
|
||
|
|
|
||
|
|
// 16 bit CRC with polynomial x^16+x^12+x^5+1
|
||
|
|
|
||
|
|
__externC cyg_uint16
|
||
|
|
cyg_crc16(unsigned char *s, int len);
|
||
|
|
|
||
|
|
#endif // _SERVICES_CRC_CRC_H_
|
||
|
|
|
||
|
|
|
||
|
|
|