//========================================================================== // // 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_