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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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 * Synchronous Compression operations
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 *
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 * Copyright 2015 LG Electronics Inc.
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 * Copyright (c) 2016, Intel Corporation
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 * Author: Giovanni Cabiddu <[email protected]>
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 */
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#ifndef _CRYPTO_SCOMP_INT_H
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#define _CRYPTO_SCOMP_INT_H
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#include <crypto/internal/acompress.h>
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struct crypto_scomp {
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	struct crypto_tfm base;
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};
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/**
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 * struct scomp_alg - synchronous compression algorithm
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 *
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 * @compress:	Function performs a compress operation
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 * @decompress:	Function performs a de-compress operation
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 * @streams:	Per-cpu memory for algorithm
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 * @calg:	Cmonn algorithm data structure shared with acomp
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 */
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struct scomp_alg {
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	int (*compress)(struct crypto_scomp *tfm, const u8 *src,
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			unsigned int slen, u8 *dst, unsigned int *dlen,
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			void *ctx);
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	int (*decompress)(struct crypto_scomp *tfm, const u8 *src,
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			  unsigned int slen, u8 *dst, unsigned int *dlen,
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			  void *ctx);
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	struct crypto_acomp_streams streams;
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	union {
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		struct COMP_ALG_COMMON;
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		struct comp_alg_common calg;
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	};
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};
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static inline struct scomp_alg *__crypto_scomp_alg(struct crypto_alg *alg)
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{
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	return container_of(alg, struct scomp_alg, base);
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}
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static inline struct crypto_scomp *__crypto_scomp_tfm(struct crypto_tfm *tfm)
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{
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	return container_of(tfm, struct crypto_scomp, base);
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}
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static inline struct crypto_tfm *crypto_scomp_tfm(struct crypto_scomp *tfm)
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{
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	return &tfm->base;
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}
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static inline void crypto_free_scomp(struct crypto_scomp *tfm)
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{
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	crypto_destroy_tfm(tfm, crypto_scomp_tfm(tfm));
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}
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static inline struct scomp_alg *crypto_scomp_alg(struct crypto_scomp *tfm)
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{
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	return __crypto_scomp_alg(crypto_scomp_tfm(tfm)->__crt_alg);
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}
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static inline int crypto_scomp_compress(struct crypto_scomp *tfm,
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					const u8 *src, unsigned int slen,
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					u8 *dst, unsigned int *dlen, void *ctx)
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{
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	return crypto_scomp_alg(tfm)->compress(tfm, src, slen, dst, dlen, ctx);
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}
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static inline int crypto_scomp_decompress(struct crypto_scomp *tfm,
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					  const u8 *src, unsigned int slen,
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					  u8 *dst, unsigned int *dlen,
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					  void *ctx)
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{
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	return crypto_scomp_alg(tfm)->decompress(tfm, src, slen, dst, dlen,
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						 ctx);
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}
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/**
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 * crypto_register_scomp() -- Register synchronous compression algorithm
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 *
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 * Function registers an implementation of a synchronous
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 * compression algorithm
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 *
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 * @alg:	algorithm definition
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 *
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 * Return: zero on success; error code in case of error
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 */
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int crypto_register_scomp(struct scomp_alg *alg);
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/**
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 * crypto_unregister_scomp() -- Unregister synchronous compression algorithm
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 *
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 * Function unregisters an implementation of a synchronous
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 * compression algorithm
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 *
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 * @alg:	algorithm definition
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 */
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void crypto_unregister_scomp(struct scomp_alg *alg);
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int crypto_register_scomps(struct scomp_alg *algs, int count);
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void crypto_unregister_scomps(struct scomp_alg *algs, int count);
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#endif
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