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f62e6e1f98
This commit changes the frontend zio_compress_data and zio_decompress_data APIs to take ABD points instead of buffer pointers. All callers are updated to match. Any that already have an appropriate ABD nearby now use it directly, while at the rest we create an one. Internally, the ABDs are passed through to the provider directly. Sponsored-by: Klara, Inc. Sponsored-by: Wasabi Technology, Inc. Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
221 lines
6.6 KiB
C
221 lines
6.6 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2019, Allan Jude
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* Copyright (c) 2019, 2024, Klara, Inc.
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* Use is subject to license terms.
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* Copyright (c) 2015, 2016 by Delphix. All rights reserved.
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*/
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#ifndef _SYS_ZIO_COMPRESS_H
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#define _SYS_ZIO_COMPRESS_H
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#include <sys/abd.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum zio_compress {
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ZIO_COMPRESS_INHERIT = 0,
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ZIO_COMPRESS_ON,
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ZIO_COMPRESS_OFF,
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ZIO_COMPRESS_LZJB,
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ZIO_COMPRESS_EMPTY,
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ZIO_COMPRESS_GZIP_1,
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ZIO_COMPRESS_GZIP_2,
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ZIO_COMPRESS_GZIP_3,
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ZIO_COMPRESS_GZIP_4,
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ZIO_COMPRESS_GZIP_5,
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ZIO_COMPRESS_GZIP_6,
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ZIO_COMPRESS_GZIP_7,
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ZIO_COMPRESS_GZIP_8,
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ZIO_COMPRESS_GZIP_9,
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ZIO_COMPRESS_ZLE,
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ZIO_COMPRESS_LZ4,
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ZIO_COMPRESS_ZSTD,
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ZIO_COMPRESS_FUNCTIONS
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};
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/* Compression algorithms that have levels */
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#define ZIO_COMPRESS_HASLEVEL(compress) ((compress == ZIO_COMPRESS_ZSTD || \
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(compress >= ZIO_COMPRESS_GZIP_1 && \
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compress <= ZIO_COMPRESS_GZIP_9)))
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#define ZIO_COMPLEVEL_INHERIT 0
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#define ZIO_COMPLEVEL_DEFAULT 255
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enum zio_zstd_levels {
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ZIO_ZSTD_LEVEL_INHERIT = 0,
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ZIO_ZSTD_LEVEL_1,
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#define ZIO_ZSTD_LEVEL_MIN ZIO_ZSTD_LEVEL_1
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ZIO_ZSTD_LEVEL_2,
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ZIO_ZSTD_LEVEL_3,
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#define ZIO_ZSTD_LEVEL_DEFAULT ZIO_ZSTD_LEVEL_3
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ZIO_ZSTD_LEVEL_4,
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ZIO_ZSTD_LEVEL_5,
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ZIO_ZSTD_LEVEL_6,
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ZIO_ZSTD_LEVEL_7,
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ZIO_ZSTD_LEVEL_8,
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ZIO_ZSTD_LEVEL_9,
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ZIO_ZSTD_LEVEL_10,
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ZIO_ZSTD_LEVEL_11,
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ZIO_ZSTD_LEVEL_12,
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ZIO_ZSTD_LEVEL_13,
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ZIO_ZSTD_LEVEL_14,
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ZIO_ZSTD_LEVEL_15,
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ZIO_ZSTD_LEVEL_16,
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ZIO_ZSTD_LEVEL_17,
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ZIO_ZSTD_LEVEL_18,
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ZIO_ZSTD_LEVEL_19,
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#define ZIO_ZSTD_LEVEL_MAX ZIO_ZSTD_LEVEL_19
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ZIO_ZSTD_LEVEL_RESERVE = 101, /* Leave room for new positive levels */
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ZIO_ZSTD_LEVEL_FAST, /* Fast levels are negative */
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ZIO_ZSTD_LEVEL_FAST_1,
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#define ZIO_ZSTD_LEVEL_FAST_DEFAULT ZIO_ZSTD_LEVEL_FAST_1
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ZIO_ZSTD_LEVEL_FAST_2,
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ZIO_ZSTD_LEVEL_FAST_3,
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ZIO_ZSTD_LEVEL_FAST_4,
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ZIO_ZSTD_LEVEL_FAST_5,
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ZIO_ZSTD_LEVEL_FAST_6,
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ZIO_ZSTD_LEVEL_FAST_7,
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ZIO_ZSTD_LEVEL_FAST_8,
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ZIO_ZSTD_LEVEL_FAST_9,
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ZIO_ZSTD_LEVEL_FAST_10,
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ZIO_ZSTD_LEVEL_FAST_20,
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ZIO_ZSTD_LEVEL_FAST_30,
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ZIO_ZSTD_LEVEL_FAST_40,
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ZIO_ZSTD_LEVEL_FAST_50,
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ZIO_ZSTD_LEVEL_FAST_60,
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ZIO_ZSTD_LEVEL_FAST_70,
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ZIO_ZSTD_LEVEL_FAST_80,
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ZIO_ZSTD_LEVEL_FAST_90,
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ZIO_ZSTD_LEVEL_FAST_100,
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ZIO_ZSTD_LEVEL_FAST_500,
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ZIO_ZSTD_LEVEL_FAST_1000,
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#define ZIO_ZSTD_LEVEL_FAST_MAX ZIO_ZSTD_LEVEL_FAST_1000
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ZIO_ZSTD_LEVEL_AUTO = 251, /* Reserved for future use */
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ZIO_ZSTD_LEVEL_LEVELS
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};
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/* Forward Declaration to avoid visibility problems */
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struct zio_prop;
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/* Common signature for all zio compress functions. */
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typedef size_t zio_compress_func_t(abd_t *src, abd_t *dst,
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size_t s_len, size_t d_len, int);
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/* Common signature for all zio decompress functions. */
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typedef int zio_decompress_func_t(abd_t *src, abd_t *dst,
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size_t s_len, size_t d_len, int);
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/* Common signature for all zio decompress and get level functions. */
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typedef int zio_decompresslevel_func_t(abd_t *src, abd_t *dst,
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size_t s_len, size_t d_len, uint8_t *level);
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/*
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* Information about each compression function.
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*/
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typedef const struct zio_compress_info {
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const char *ci_name;
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int ci_level;
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zio_compress_func_t *ci_compress;
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zio_decompress_func_t *ci_decompress;
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zio_decompresslevel_func_t *ci_decompress_level;
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} zio_compress_info_t;
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extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS];
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/*
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* lz4 compression init & free
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*/
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extern void lz4_init(void);
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extern void lz4_fini(void);
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/*
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* Compression routines.
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*/
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extern size_t zfs_lzjb_compress(abd_t *src, abd_t *dst, size_t s_len,
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size_t d_len, int level);
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extern int zfs_lzjb_decompress(abd_t *src, abd_t *dst, size_t s_len,
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size_t d_len, int level);
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extern size_t zfs_gzip_compress(abd_t *src, abd_t *dst, size_t s_len,
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size_t d_len, int level);
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extern int zfs_gzip_decompress(abd_t *src, abd_t *dst, size_t s_len,
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size_t d_len, int level);
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extern size_t zfs_zle_compress(abd_t *src, abd_t *dst, size_t s_len,
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size_t d_len, int level);
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extern int zfs_zle_decompress(abd_t *src, abd_t *dst, size_t s_len,
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size_t d_len, int level);
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extern size_t zfs_lz4_compress(abd_t *src, abd_t *dst, size_t s_len,
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size_t d_len, int level);
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extern int zfs_lz4_decompress(abd_t *src, abd_t *dst, size_t s_len,
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size_t d_len, int level);
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/*
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* Compress and decompress data if necessary.
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*/
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extern size_t zio_compress_data(enum zio_compress c, abd_t *src, abd_t **dst,
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size_t s_len, uint8_t level);
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extern int zio_decompress_data(enum zio_compress c, abd_t *src, abd_t *abd,
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size_t s_len, size_t d_len, uint8_t *level);
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extern int zio_compress_to_feature(enum zio_compress comp);
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#define ZFS_COMPRESS_WRAP_DECL(name) \
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size_t \
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name(abd_t *src, abd_t *dst, size_t s_len, size_t d_len, int n) \
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{ \
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void *s_buf = abd_borrow_buf_copy(src, s_len); \
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void *d_buf = abd_borrow_buf(dst, d_len); \
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size_t c_len = name##_buf(s_buf, d_buf, s_len, d_len, n); \
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abd_return_buf(src, s_buf, s_len); \
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abd_return_buf_copy(dst, d_buf, d_len); \
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return (c_len); \
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}
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#define ZFS_DECOMPRESS_WRAP_DECL(name) \
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int \
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name(abd_t *src, abd_t *dst, size_t s_len, size_t d_len, int n) \
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{ \
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void *s_buf = abd_borrow_buf_copy(src, s_len); \
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void *d_buf = abd_borrow_buf(dst, d_len); \
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int err = name##_buf(s_buf, d_buf, s_len, d_len, n); \
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abd_return_buf(src, s_buf, s_len); \
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abd_return_buf_copy(dst, d_buf, d_len); \
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return (err); \
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}
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#define ZFS_DECOMPRESS_LEVEL_WRAP_DECL(name) \
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int \
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name(abd_t *src, abd_t *dst, size_t s_len, size_t d_len, uint8_t *n) \
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{ \
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void *s_buf = abd_borrow_buf_copy(src, s_len); \
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void *d_buf = abd_borrow_buf(dst, d_len); \
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int err = name##_buf(s_buf, d_buf, s_len, d_len, n); \
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abd_return_buf(src, s_buf, s_len); \
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abd_return_buf_copy(dst, d_buf, d_len); \
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return (err); \
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_ZIO_COMPRESS_H */
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