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/*
* Compress: Compression algorithms under the cryptographic API.
*
* Copyright 2008 Sony Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _CRYPTO_COMPRESS_H
#define _CRYPTO_COMPRESS_H
#include <linux/crypto.h>
struct comp_request {
const void *next_in; /* next input byte */
void *next_out; /* next output byte */
unsigned int avail_in; /* bytes available at next_in */
unsigned int avail_out; /* bytes available at next_out */
};
struct crypto_pcomp {
struct crypto_tfm base;
};
struct pcomp_alg {
int (*compress_setup)(struct crypto_pcomp *tfm, void *params,
unsigned int len);
int (*compress_init)(struct crypto_pcomp *tfm);
int (*compress_update)(struct crypto_pcomp *tfm,
struct comp_request *req);
int (*compress_final)(struct crypto_pcomp *tfm,
struct comp_request *req);
int (*decompress_setup)(struct crypto_pcomp *tfm, void *params,
unsigned int len);
int (*decompress_init)(struct crypto_pcomp *tfm);
int (*decompress_update)(struct crypto_pcomp *tfm,
struct comp_request *req);
int (*decompress_final)(struct crypto_pcomp *tfm,
struct comp_request *req);
struct crypto_alg base;
};
extern struct crypto_pcomp *crypto_alloc_pcomp(const char *alg_name, u32 type,
u32 mask);
static inline struct crypto_tfm *crypto_pcomp_tfm(struct crypto_pcomp *tfm)
{
return &tfm->base;
}
static inline void crypto_free_pcomp(struct crypto_pcomp *tfm)
{
crypto_destroy_tfm(tfm, crypto_pcomp_tfm(tfm));
}
static inline struct pcomp_alg *__crypto_pcomp_alg(struct crypto_alg *alg)
{
return container_of(alg, struct pcomp_alg, base);
}
static inline struct pcomp_alg *crypto_pcomp_alg(struct crypto_pcomp *tfm)
{
return __crypto_pcomp_alg(crypto_pcomp_tfm(tfm)->__crt_alg);
}
static inline int crypto_compress_setup(struct crypto_pcomp *tfm,
void *params, unsigned int len)
{
return crypto_pcomp_alg(tfm)->compress_setup(tfm, params, len);
}
static inline int crypto_compress_init(struct crypto_pcomp *tfm)
{
return crypto_pcomp_alg(tfm)->compress_init(tfm);
}
static inline int crypto_compress_update(struct crypto_pcomp *tfm,
struct comp_request *req)
{
return crypto_pcomp_alg(tfm)->compress_update(tfm, req);
}
static inline int crypto_compress_final(struct crypto_pcomp *tfm,
struct comp_request *req)
{
return crypto_pcomp_alg(tfm)->compress_final(tfm, req);
}
static inline int crypto_decompress_setup(struct crypto_pcomp *tfm,
void *params, unsigned int len)
{
return crypto_pcomp_alg(tfm)->decompress_setup(tfm, params, len);
}
static inline int crypto_decompress_init(struct crypto_pcomp *tfm)
{
return crypto_pcomp_alg(tfm)->decompress_init(tfm);
}
static inline int crypto_decompress_update(struct crypto_pcomp *tfm,
struct comp_request *req)
{
return crypto_pcomp_alg(tfm)->decompress_update(tfm, req);
}
static inline int crypto_decompress_final(struct crypto_pcomp *tfm,
struct comp_request *req)
{
return crypto_pcomp_alg(tfm)->decompress_final(tfm, req);
}
#endif /* _CRYPTO_COMPRESS_H */
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