diff options
Diffstat (limited to 'include/sys/zio_compress.h')
| -rw-r--r-- | include/sys/zio_compress.h | 81 |
1 files changed, 78 insertions, 3 deletions
diff --git a/include/sys/zio_compress.h b/include/sys/zio_compress.h index 208117eee..4a22ad2a2 100644 --- a/include/sys/zio_compress.h +++ b/include/sys/zio_compress.h @@ -21,6 +21,8 @@ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. + * Copyright (c) 2019, Allan Jude + * Copyright (c) 2019, Klara Inc. * Use is subject to license terms. * Copyright (c) 2015, 2016 by Delphix. All rights reserved. */ @@ -51,15 +53,86 @@ enum zio_compress { ZIO_COMPRESS_GZIP_9, ZIO_COMPRESS_ZLE, ZIO_COMPRESS_LZ4, + ZIO_COMPRESS_ZSTD, ZIO_COMPRESS_FUNCTIONS }; +/* Compression algorithms that have levels */ +#define ZIO_COMPRESS_HASLEVEL(compress) ((compress == ZIO_COMPRESS_ZSTD || \ + (compress >= ZIO_COMPRESS_GZIP_1 && \ + compress <= ZIO_COMPRESS_GZIP_9))) + +#define ZIO_COMPLEVEL_INHERIT 0 +#define ZIO_COMPLEVEL_DEFAULT 255 + +enum zio_zstd_levels { + ZIO_ZSTD_LEVEL_INHERIT = 0, + ZIO_ZSTD_LEVEL_1, +#define ZIO_ZSTD_LEVEL_MIN ZIO_ZSTD_LEVEL_1 + ZIO_ZSTD_LEVEL_2, + ZIO_ZSTD_LEVEL_3, +#define ZIO_ZSTD_LEVEL_DEFAULT ZIO_ZSTD_LEVEL_3 + ZIO_ZSTD_LEVEL_4, + ZIO_ZSTD_LEVEL_5, + ZIO_ZSTD_LEVEL_6, + ZIO_ZSTD_LEVEL_7, + ZIO_ZSTD_LEVEL_8, + ZIO_ZSTD_LEVEL_9, + ZIO_ZSTD_LEVEL_10, + ZIO_ZSTD_LEVEL_11, + ZIO_ZSTD_LEVEL_12, + ZIO_ZSTD_LEVEL_13, + ZIO_ZSTD_LEVEL_14, + ZIO_ZSTD_LEVEL_15, + ZIO_ZSTD_LEVEL_16, + ZIO_ZSTD_LEVEL_17, + ZIO_ZSTD_LEVEL_18, + ZIO_ZSTD_LEVEL_19, +#define ZIO_ZSTD_LEVEL_MAX ZIO_ZSTD_LEVEL_19 + ZIO_ZSTD_LEVEL_RESERVE = 101, /* Leave room for new positive levels */ + ZIO_ZSTD_LEVEL_FAST, /* Fast levels are negative */ + ZIO_ZSTD_LEVEL_FAST_1, +#define ZIO_ZSTD_LEVEL_FAST_DEFAULT ZIO_ZSTD_LEVEL_FAST_1 + ZIO_ZSTD_LEVEL_FAST_2, + ZIO_ZSTD_LEVEL_FAST_3, + ZIO_ZSTD_LEVEL_FAST_4, + ZIO_ZSTD_LEVEL_FAST_5, + ZIO_ZSTD_LEVEL_FAST_6, + ZIO_ZSTD_LEVEL_FAST_7, + ZIO_ZSTD_LEVEL_FAST_8, + ZIO_ZSTD_LEVEL_FAST_9, + ZIO_ZSTD_LEVEL_FAST_10, + ZIO_ZSTD_LEVEL_FAST_20, + ZIO_ZSTD_LEVEL_FAST_30, + ZIO_ZSTD_LEVEL_FAST_40, + ZIO_ZSTD_LEVEL_FAST_50, + ZIO_ZSTD_LEVEL_FAST_60, + ZIO_ZSTD_LEVEL_FAST_70, + ZIO_ZSTD_LEVEL_FAST_80, + ZIO_ZSTD_LEVEL_FAST_90, + ZIO_ZSTD_LEVEL_FAST_100, + ZIO_ZSTD_LEVEL_FAST_500, + ZIO_ZSTD_LEVEL_FAST_1000, +#define ZIO_ZSTD_LEVEL_FAST_MAX ZIO_ZSTD_LEVEL_FAST_1000 + ZIO_ZSTD_LEVEL_AUTO = 251, /* Reserved for future use */ + ZIO_ZSTD_LEVEL_LEVELS +}; + +/* Forward Declaration to avoid visibility problems */ +struct zio_prop; + /* Common signature for all zio compress functions. */ typedef size_t zio_compress_func_t(void *src, void *dst, size_t s_len, size_t d_len, int); /* Common signature for all zio decompress functions. */ typedef int zio_decompress_func_t(void *src, void *dst, size_t s_len, size_t d_len, int); +/* Common signature for all zio decompress and get level functions. */ +typedef int zio_decompresslevel_func_t(void *src, void *dst, + size_t s_len, size_t d_len, uint8_t *level); +/* Common signature for all zio get-compression-level functions. */ +typedef int zio_getlevel_func_t(void *src, size_t s_len, uint8_t *level); + /* * Common signature for all zio decompress functions using an ABD as input. @@ -76,6 +149,7 @@ typedef const struct zio_compress_info { int ci_level; zio_compress_func_t *ci_compress; zio_decompress_func_t *ci_decompress; + zio_decompresslevel_func_t *ci_decompress_level; } zio_compress_info_t; extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS]; @@ -110,11 +184,12 @@ extern int lz4_decompress_zfs(void *src, void *dst, size_t s_len, size_t d_len, * Compress and decompress data if necessary. */ extern size_t zio_compress_data(enum zio_compress c, abd_t *src, void *dst, - size_t s_len); + size_t s_len, uint8_t level); extern int zio_decompress_data(enum zio_compress c, abd_t *src, void *dst, - size_t s_len, size_t d_len); + size_t s_len, size_t d_len, uint8_t *level); extern int zio_decompress_data_buf(enum zio_compress c, void *src, void *dst, - size_t s_len, size_t d_len); + size_t s_len, size_t d_len, uint8_t *level); +extern int zio_compress_to_feature(enum zio_compress comp); #ifdef __cplusplus } |