Function zstd_enum_to_level

freebsd/contrib/openzfs/module/zstd/zfs_zstd.c:346–362

Convert ZFS internal enum to ZSTD level */

/* Convert ZFS internal enum to ZSTD level */
static int
zstd_enum_to_level(enum zio_zstd_levels level, int16_t *zstd_level)
{
	if (level > 0 && level <= ZIO_ZSTD_LEVEL_19) {
		*zstd_level = zstd_levels[level - 1].zstd_level;
		return (0);
	}
	if (level >= ZIO_ZSTD_LEVEL_FAST_1 &&
	    level <= ZIO_ZSTD_LEVEL_FAST_1000) {
		*zstd_level = zstd_levels[level - ZIO_ZSTD_LEVEL_FAST_1
		    + ZIO_ZSTD_LEVEL_19].zstd_level;
		return (0);
	}

	/* Invalid/unknown zfs compression enum - this should never happen. */
	return (1);
}

/* Compress block using zstd */
size_t