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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Asynchronous Compression operations
*
* Copyright (c) 2016, Intel Corporation
* Authors: Weigang Li <weigang.li@intel.com>
* Giovanni Cabiddu <giovanni.cabiddu@intel.com>
*/
#ifndef _CRYPTO_ACOMP_H
#define _CRYPTO_ACOMP_H
#include <linux/crypto.h>
#define CRYPTO_ACOMP_ALLOC_OUTPUT 0x00000001
#define CRYPTO_ACOMP_DST_MAX 131072
/**
* struct acomp_req - asynchronous (de)compression request
*
* @base: Common attributes for asynchronous crypto requests
* @src: Source Data
* @dst: Destination data
* @slen: Size of the input buffer
* @dlen: Size of the output buffer and number of bytes produced
* @flags: Internal flags
* @__ctx: Start of private context data
*/
struct acomp_req {
struct crypto_async_request base;
struct scatterlist *src;
struct scatterlist *dst;
unsigned int slen;
unsigned int dlen;
u32 flags;
void *__ctx[] CRYPTO_MINALIGN_ATTR;
};
/**
* struct crypto_acomp - user-instantiated objects which encapsulate
* algorithms and core processing logic
*
* @compress: Function performs a compress operation
* @decompress: Function performs a de-compress operation
* @dst_free: Frees destination buffer if allocated inside the
* algorithm
* @reqsize: Context size for (de)compression requests
* @base: Common crypto API algorithm data structure
*/
struct crypto_acomp {
int (*compress)(struct acomp_req *req);
int (*decompress)(struct acomp_req *req);
void (*dst_free)(struct scatterlist *dst);
unsigned int reqsize;
struct crypto_tfm base;
};
/**
* struct acomp_alg - asynchronous compression algorithm
*
* @compress: Function performs a compress operation
* @decompress: Function performs a de-compress operation
* @dst_free: Frees destination buffer if allocated inside the algorithm
* @init: Initialize the cryptographic transformation object.
* This function is used to initialize the cryptographic
* transformation object. This function is called only once at
* the instantiation time, right after the transformation context
* was allocated. In case the cryptographic hardware has some
* special requirements which need to be handled by software, this
* function shall check for the precise requirement of the
* transformation and put any software fallbacks in place.
* @exit: Deinitialize the cryptographic transformation object. This is a
* counterpart to @init, used to remove various changes set in
* @init.
*
* @reqsize: Context size for (de)compression requests
* @base: Common crypto API algorithm data structure
*/
struct acomp_alg {
int (*compress)(struct acomp_req *req);
int (*decompress)(struct acomp_req *req);
void (*dst_free)(struct scatterlist *dst);
int (*init)(struct crypto_acomp *tfm);
void (*exit)(struct crypto_acomp *tfm);
unsigned int reqsize;
struct crypto_alg base;
};
/**
* DOC: Asynchronous Compression API
*
* The Asynchronous Compression API is used with the algorithms of type
* CRYPTO_ALG_TYPE_ACOMPRESS (listed as type "acomp" in /proc/crypto)
*/
/**
* crypto_alloc_acomp() -- allocate ACOMPRESS tfm handle
* @alg_name: is the cra_name / name or cra_driver_name / driver name of the
* compression algorithm e.g. "deflate"
* @type: specifies the type of the algorithm
* @mask: specifies the mask for the algorithm
*
* Allocate a handle for a compression algorithm. The returned struct
* crypto_acomp is the handle that is required for any subsequent
* API invocation for the compression operations.
*
* Return: allocated handle in case of success; IS_ERR() is true in case
* of an error, PTR_ERR() returns the error code.
*/
struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
u32 mask);
/**
* crypto_alloc_acomp_node() -- allocate ACOMPRESS tfm handle with desired NUMA node
* @alg_name: is the cra_name / name or cra_driver_name / driver name of the
* compression algorithm e.g. "deflate"
* @type: specifies the type of the algorithm
* @mask: specifies the mask for the algorithm
* @node: specifies the NUMA node the ZIP hardware belongs to
*
* Allocate a handle for a compression algorithm. Drivers should try to use
* (de)compressors on the specified NUMA node.
* The returned struct crypto_acomp is the handle that is required for any
* subsequent API invocation for the compression operations.
*
* Return: allocated handle in case of success; IS_ERR() is true in case
* of an error, PTR_ERR() returns the error code.
*/
struct crypto_acomp *crypto_alloc_acomp_node(const char *alg_name, u32 type,
u32 mask, int node);
static inline struct crypto_tfm *crypto_acomp_tfm(struct crypto_acomp *tfm)
{
return &tfm->base;
}
static inline struct acomp_alg *__crypto_acomp_alg(struct crypto_alg *alg)
{
return container_of(alg, struct acomp_alg, base);
}
static inline struct crypto_acomp *__crypto_acomp_tfm(struct crypto_tfm *tfm)
{
return container_of(tfm, struct crypto_acomp, base);
}
static inline struct acomp_alg *crypto_acomp_alg(struct crypto_acomp *tfm)
{
return __crypto_acomp_alg(crypto_acomp_tfm(tfm)->__crt_alg);
}
static inline unsigned int crypto_acomp_reqsize(struct crypto_acomp *tfm)
{
return tfm->reqsize;
}
static inline void acomp_request_set_tfm(struct acomp_req *req,
struct crypto_acomp *tfm)
{
req->base.tfm = crypto_acomp_tfm(tfm);
}
static inline struct crypto_acomp *crypto_acomp_reqtfm(struct acomp_req *req)
{
return __crypto_acomp_tfm(req->base.tfm);
}
/**
* crypto_free_acomp() -- free ACOMPRESS tfm handle
*
* @tfm: ACOMPRESS tfm handle allocated with crypto_alloc_acomp()
*
* If @tfm is a NULL or error pointer, this function does nothing.
*/
static inline void crypto_free_acomp(struct crypto_acomp *tfm)
{
crypto_destroy_tfm(tfm, crypto_acomp_tfm(tfm));
}
static inline int crypto_has_acomp(const char *alg_name, u32 type, u32 mask)
{
type &= ~CRYPTO_ALG_TYPE_MASK;
type |= CRYPTO_ALG_TYPE_ACOMPRESS;
mask |= CRYPTO_ALG_TYPE_ACOMPRESS_MASK;
return crypto_has_alg(alg_name, type, mask);
}
/**
* acomp_request_alloc() -- allocates asynchronous (de)compression request
*
* @tfm: ACOMPRESS tfm handle allocated with crypto_alloc_acomp()
*
* Return: allocated handle in case of success or NULL in case of an error
*/
struct acomp_req *acomp_request_alloc(struct crypto_acomp *tfm);
/**
* acomp_request_free() -- zeroize and free asynchronous (de)compression
* request as well as the output buffer if allocated
* inside the algorithm
*
* @req: request to free
*/
void acomp_request_free(struct acomp_req *req);
/**
* acomp_request_set_callback() -- Sets an asynchronous callback
*
* Callback will be called when an asynchronous operation on a given
* request is finished.
*
* @req: request that the callback will be set for
* @flgs: specify for instance if the operation may backlog
* @cmlp: callback which will be called
* @data: private data used by the caller
*/
static inline void acomp_request_set_callback(struct acomp_req *req,
u32 flgs,
crypto_completion_t cmpl,
void *data)
{
req->base.complete = cmpl;
req->base.data = data;
req->base.flags = flgs;
}
/**
* acomp_request_set_params() -- Sets request parameters
*
* Sets parameters required by an acomp operation
*
* @req: asynchronous compress request
* @src: pointer to input buffer scatterlist
* @dst: pointer to output buffer scatterlist. If this is NULL, the
* acomp layer will allocate the output memory
* @slen: size of the input buffer
* @dlen: size of the output buffer. If dst is NULL, this can be used by
* the user to specify the maximum amount of memory to allocate
*/
static inline void acomp_request_set_params(struct acomp_req *req,
struct scatterlist *src,
struct scatterlist *dst,
unsigned int slen,
unsigned int dlen)
{
req->src = src;
req->dst = dst;
req->slen = slen;
req->dlen = dlen;
if (!req->dst)
req->flags |= CRYPTO_ACOMP_ALLOC_OUTPUT;
}
/**
* crypto_acomp_compress() -- Invoke asynchronous compress operation
*
* Function invokes the asynchronous compress operation
*
* @req: asynchronous compress request
*
* Return: zero on success; error code in case of error
*/
static inline int crypto_acomp_compress(struct acomp_req *req)
{
struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
struct crypto_alg *alg = tfm->base.__crt_alg;
unsigned int slen = req->slen;
int ret;
crypto_stats_get(alg);
ret = tfm->compress(req);
crypto_stats_compress(slen, ret, alg);
return ret;
}
/**
* crypto_acomp_decompress() -- Invoke asynchronous decompress operation
*
* Function invokes the asynchronous decompress operation
*
* @req: asynchronous compress request
*
* Return: zero on success; error code in case of error
*/
static inline int crypto_acomp_decompress(struct acomp_req *req)
{
struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
struct crypto_alg *alg = tfm->base.__crt_alg;
unsigned int slen = req->slen;
int ret;
crypto_stats_get(alg);
ret = tfm->decompress(req);
crypto_stats_decompress(slen, ret, alg);
return ret;
}
#endif
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| internal | Folder | 0755 |
|
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| acompress.h | File | 8.9 KB | 0644 |
|
| aead.h | File | 18.44 KB | 0644 |
|
| aes.h | File | 2.5 KB | 0644 |
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| akcipher.h | File | 12.92 KB | 0644 |
|
| algapi.h | File | 7.22 KB | 0644 |
|
| arc4.h | File | 484 B | 0644 |
|
| asym_tpm_subtype.h | File | 521 B | 0644 |
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| authenc.h | File | 635 B | 0644 |
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| b128ops.h | File | 2.26 KB | 0644 |
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| blake2b.h | File | 1.57 KB | 0644 |
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| blake2s.h | File | 2.72 KB | 0644 |
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| blowfish.h | File | 415 B | 0644 |
|
| cast5.h | File | 590 B | 0644 |
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| cast6.h | File | 607 B | 0644 |
|
| cast_common.h | File | 232 B | 0644 |
|
| chacha.h | File | 3.32 KB | 0644 |
|
| chacha20poly1305.h | File | 1.66 KB | 0644 |
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| cryptd.h | File | 2 KB | 0644 |
|
| ctr.h | File | 1.42 KB | 0644 |
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| curve25519.h | File | 2.02 KB | 0644 |
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| des.h | File | 1.68 KB | 0644 |
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| dh.h | File | 3.03 KB | 0644 |
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| drbg.h | File | 8.99 KB | 0644 |
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| ecc_curve.h | File | 1.31 KB | 0644 |
|
| ecdh.h | File | 2.43 KB | 0644 |
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| engine.h | File | 3.78 KB | 0644 |
|
| gcm.h | File | 867 B | 0644 |
|
| gf128mul.h | File | 9.42 KB | 0644 |
|
| ghash.h | File | 388 B | 0644 |
|
| hash.h | File | 34.11 KB | 0644 |
|
| hash_info.h | File | 998 B | 0644 |
|
| hkdf.h | File | 524 B | 0644 |
|
| hmac.h | File | 173 B | 0644 |
|
| if_alg.h | File | 6.6 KB | 0644 |
|
| kpp.h | File | 9.97 KB | 0644 |
|
| md5.h | File | 497 B | 0644 |
|
| nhpoly1305.h | File | 2.18 KB | 0644 |
|
| null.h | File | 346 B | 0644 |
|
| padlock.h | File | 438 B | 0644 |
|
| pcrypt.h | File | 821 B | 0644 |
|
| pkcs7.h | File | 1.15 KB | 0644 |
|
| poly1305.h | File | 2.44 KB | 0644 |
|
| public_key.h | File | 3.63 KB | 0644 |
|
| rng.h | File | 6.59 KB | 0644 |
|
| scatterwalk.h | File | 2.94 KB | 0644 |
|
| serpent.h | File | 696 B | 0644 |
|
| sha1.h | File | 1.18 KB | 0644 |
|
| sha1_base.h | File | 2.45 KB | 0644 |
|
| sha2.h | File | 3.76 KB | 0644 |
|
| sha256_base.h | File | 2.56 KB | 0644 |
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| sha3.h | File | 879 B | 0644 |
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| sha512_base.h | File | 3.18 KB | 0644 |
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| skcipher.h | File | 20.03 KB | 0644 |
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| sm2.h | File | 749 B | 0644 |
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| sm3.h | File | 897 B | 0644 |
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| sm3_base.h | File | 2.55 KB | 0644 |
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| sm4.h | File | 754 B | 0644 |
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| streebog.h | File | 949 B | 0644 |
|
| twofish.h | File | 743 B | 0644 |
|
| xts.h | File | 978 B | 0644 |
|