| 1 |
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| 2 | |
| 3 | * Synchronous Compression operations
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| 4 | *
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| 5 | * Copyright 2015 LG Electronics Inc.
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| 6 | * Copyright (c) 2016, Intel Corporation
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| 7 | * Author: Giovanni Cabiddu <[email protected]>
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| 8 |
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| 9 | #ifndef _CRYPTO_SCOMP_INT_H
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| 10 | #define _CRYPTO_SCOMP_INT_H
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| 11 |
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| 12 | #include <crypto/internal/acompress.h>
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| 13 |
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| 14 | struct crypto_scomp {
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| 15 | struct crypto_tfm base;
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| 16 | };
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| 17 |
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| 18 | |
| 19 | * struct scomp_alg - synchronous compression algorithm
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| 20 | *
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| 21 | * @compress: Function performs a compress operation
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| 22 | * @decompress: Function performs a de-compress operation
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| 23 | * @streams: Per-cpu memory for algorithm
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| 24 | * @calg: Cmonn algorithm data structure shared with acomp
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| 25 | * @COMP_ALG_COMMON: see struct comp_alg_common
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| 26 |
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| 27 | struct scomp_alg {
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| 28 | int (*compress)(struct crypto_scomp *tfm, const u8 *src,
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| 29 | unsigned int slen, u8 *dst, unsigned int *dlen,
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| 30 | void *ctx);
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| 31 | int (*decompress)(struct crypto_scomp *tfm, const u8 *src,
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| 32 | unsigned int slen, u8 *dst, unsigned int *dlen,
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| 33 | void *ctx);
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| 34 |
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| 35 | struct crypto_acomp_streams streams;
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| 36 |
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| 37 | union {
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| 38 | struct COMP_ALG_COMMON;
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| 39 | struct comp_alg_common calg;
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| 40 | };
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| 41 | };
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| 42 |
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| 43 | static inline struct scomp_alg *__crypto_scomp_alg(struct crypto_alg *alg)
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| 44 | {
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| 45 | return container_of(alg, struct scomp_alg, base);
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| 46 | }
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| 47 |
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| 48 | static inline struct crypto_scomp *__crypto_scomp_tfm(struct crypto_tfm *tfm)
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| 49 | {
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| 50 | return container_of(tfm, struct crypto_scomp, base);
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| 51 | }
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| 52 |
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| 53 | static inline struct crypto_tfm *crypto_scomp_tfm(struct crypto_scomp *tfm)
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| 54 | {
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| 55 | return &tfm->base;
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| 56 | }
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| 57 |
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| 58 | static inline void crypto_free_scomp(struct crypto_scomp *tfm)
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| 59 | {
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| 60 | crypto_destroy_tfm(tfm, crypto_scomp_tfm(tfm));
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| 61 | }
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| 62 |
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| 63 | static inline struct scomp_alg *crypto_scomp_alg(struct crypto_scomp *tfm)
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| 64 | {
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| 65 | return __crypto_scomp_alg(crypto_scomp_tfm(tfm)->__crt_alg);
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| 66 | }
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| 67 |
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| 68 | static inline int crypto_scomp_compress(struct crypto_scomp *tfm,
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| 69 | const u8 *src, unsigned int slen,
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| 70 | u8 *dst, unsigned int *dlen, void *ctx)
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| 71 | {
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| 72 | return crypto_scomp_alg(tfm)->compress(tfm, src, slen, dst, dlen, ctx);
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| 73 | }
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| 74 |
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| 75 | static inline int crypto_scomp_decompress(struct crypto_scomp *tfm,
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| 76 | const u8 *src, unsigned int slen,
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| 77 | u8 *dst, unsigned int *dlen,
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| 78 | void *ctx)
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| 79 | {
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| 80 | return crypto_scomp_alg(tfm)->decompress(tfm, src, slen, dst, dlen,
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| 81 | ctx);
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| 82 | }
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| 83 |
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| 84 | |
| 85 | * crypto_register_scomp() -- Register synchronous compression algorithm
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| 86 | *
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| 87 | * Function registers an implementation of a synchronous
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| 88 | * compression algorithm
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| 89 | *
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| 90 | * @alg: algorithm definition
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| 91 | *
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| 92 | * Return: zero on success; error code in case of error
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| 93 |
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| 94 | int crypto_register_scomp(struct scomp_alg *alg);
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| 95 |
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| 96 | |
| 97 | * crypto_unregister_scomp() -- Unregister synchronous compression algorithm
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| 98 | *
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| 99 | * Function unregisters an implementation of a synchronous
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| 100 | * compression algorithm
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| 101 | *
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| 102 | * @alg: algorithm definition
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| 103 |
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| 104 | void crypto_unregister_scomp(struct scomp_alg *alg);
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| 105 |
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| 106 | int crypto_register_scomps(struct scomp_alg *algs, int count);
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| 107 | void crypto_unregister_scomps(struct scomp_alg *algs, int count);
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| 108 |
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| 109 | #endif
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