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#ifndef _NDCTL_FLETCHER_H_
#define _NDCTL_FLETCHER_H_
#include <stdbool.h>
#include <ccan/endian/endian.h>
#include <ccan/short_types/short_types.h>
/*
* Note, fletcher64() is copied from drivers/nvdimm/label.c in the Linux kernel
*/
static inline u64 fletcher64(void *addr, size_t len, bool le)
{
u32 *buf = addr;
u32 lo32 = 0;
u64 hi32 = 0;
size_t i;
for (i = 0; i < len / sizeof(u32); i++) {
lo32 += le ? le32_to_cpu((le32) buf[i]) : buf[i];
hi32 += lo32;
}
return hi32 << 32 | lo32;
}
#endif /* _NDCTL_FLETCHER_H_ */
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