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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright (C) 2014 Sergey Senozhatsky.
4 */
5
6#ifndef _ZCOMP_H_
7#define _ZCOMP_H_
8
9struct zcomp_strm {
10 /* compression/decompression buffer */
11 void *buffer;
12 struct crypto_comp *tfm;
13};
14
15/* dynamic per-device compression frontend */
16struct zcomp {
17 struct zcomp_strm * __percpu *stream;
18 const char *name;
19 struct hlist_node node;
20};
21
22int zcomp_cpu_up_prepare(unsigned int cpu, struct hlist_node *node);
23int zcomp_cpu_dead(unsigned int cpu, struct hlist_node *node);
24ssize_t zcomp_available_show(const char *comp, char *buf);
25bool zcomp_available_algorithm(const char *comp);
26
27struct zcomp *zcomp_create(const char *comp);
28void zcomp_destroy(struct zcomp *comp);
29
30struct zcomp_strm *zcomp_stream_get(struct zcomp *comp);
31void zcomp_stream_put(struct zcomp *comp);
32
33int zcomp_compress(struct zcomp_strm *zstrm,
34 const void *src, unsigned int *dst_len);
35
36int zcomp_decompress(struct zcomp_strm *zstrm,
37 const void *src, unsigned int src_len, void *dst);
38
39bool zcomp_set_max_streams(struct zcomp *comp, int num_strm);
40#endif /* _ZCOMP_H_ */