#ifndef _CRYPTO_XTS_H#define _CRYPTO_XTS_H #include <crypto/b128ops.h> struct scatterlist;struct blkcipher_desc; #define XTS_BLOCK_SIZE 16 struct xts_crypt_req {	be128 *tbuf;	unsigned int tbuflen; 	void *tweak_ctx;	void (*tweak_fn)(void *ctx, u8* dst, const u8* src);	void *crypt_ctx;	void (*crypt_fn)(void *ctx, u8 *blks, unsigned int nbytes);}; #define XTS_TWEAK_CAST(x) ((void (*)(void *, u8*, const u8*))(x)) int xts_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,	      struct scatterlist *src, unsigned int nbytes,	      struct xts_crypt_req *req); #endif  /* _CRYPTO_XTS_H */