45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/*
|
|
* Copyright (C) 2014 Sergey Senozhatsky.
|
|
*
|
|
* 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; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _ZCOMP_H_
|
|
#define _ZCOMP_H_
|
|
|
|
struct zcomp_strm {
|
|
/* compression/decompression buffer */
|
|
void *buffer;
|
|
struct crypto_comp *tfm;
|
|
};
|
|
|
|
/* dynamic per-device compression frontend */
|
|
struct zcomp {
|
|
struct zcomp_strm * __percpu *stream;
|
|
const char *name;
|
|
struct hlist_node node;
|
|
};
|
|
|
|
int zcomp_cpu_up_prepare(unsigned int cpu, struct hlist_node *node);
|
|
int zcomp_cpu_dead(unsigned int cpu, struct hlist_node *node);
|
|
ssize_t zcomp_available_show(const char *comp, char *buf);
|
|
bool zcomp_available_algorithm(const char *comp);
|
|
|
|
struct zcomp *zcomp_create(const char *comp);
|
|
void zcomp_destroy(struct zcomp *comp);
|
|
|
|
struct zcomp_strm *zcomp_stream_get(struct zcomp *comp);
|
|
void zcomp_stream_put(struct zcomp *comp);
|
|
|
|
int zcomp_compress(struct zcomp_strm *zstrm,
|
|
const void *src, unsigned int *dst_len);
|
|
|
|
int zcomp_decompress(struct zcomp_strm *zstrm,
|
|
const void *src, unsigned int src_len, void *dst);
|
|
|
|
bool zcomp_set_max_streams(struct zcomp *comp, int num_strm);
|
|
#endif /* _ZCOMP_H_ */
|