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+/*
+ *==========================================================================
+ *
+ *      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_ */