Fix BLAKE3 tuneable and module loading on Linux and FreeBSD

Apply similar options to BLAKE3 as it is done for zfs_fletcher_4_impl.

The zfs module parameter on Linux changes from icp_blake3_impl to
zfs_blake3_impl.

You can check and set it on Linux via sysfs like this:
```
[bash]# cat /sys/module/zfs/parameters/zfs_blake3_impl
cycle [fastest] generic sse2 sse41 avx2

[bash]# echo sse2 > /sys/module/zfs/parameters/zfs_blake3_impl
[bash]# cat /sys/module/zfs/parameters/zfs_blake3_impl
cycle fastest generic [sse2] sse41 avx2
```

The modprobe module parameters may also be used now:
```
[bash]# modprobe zfs zfs_blake3_impl=sse41
[bash]# cat /sys/module/zfs/parameters/zfs_blake3_impl
cycle fastest generic sse2 [sse41] avx2
```

On FreeBSD the BLAKE3 implementation can be set via sysctl like this:
```
[bsd]# sysctl vfs.zfs.blake3_impl
vfs.zfs.blake3_impl: cycle [fastest] generic sse2 sse41 avx2
[bsd]# sysctl vfs.zfs.blake3_impl=sse2
vfs.zfs.blake3_impl: cycle [fastest] generic sse2 sse41 avx2 \
  -> cycle fastest generic [sse2] sse41 avx2
```

This commit changes also some Blake3 internals like these:
- blake3_impl_ops_t was renamed to blake3_ops_t
- all functions are named blake3_impl_NAME() now

Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Ryan Moeller <[email protected]>
Co-authored-by: Ryan Moeller <[email protected]>
Signed-off-by: Tino Reichardt <[email protected]>
Closes #13725

1 files changed, 10 insertions, 13 deletions

diff --git a/include/sys/blake3.h b/include/sys/blake3.h
index 19500585f..ad65fc8db 100644
--- a/include/sys/blake3.h
+++ b/include/sys/blake3.h
@@ -72,7 +72,7 @@ typedef struct {
 	 */
 	uint8_t cv_stack[(BLAKE3_MAX_DEPTH + 1) * BLAKE3_OUT_LEN];
 
-	/* const blake3_impl_ops_t *ops */
+	/* const blake3_ops_t *ops */
 	const void *ops;
 } BLAKE3_CTX;
 
@@ -97,26 +97,23 @@ extern void **blake3_per_cpu_ctx;
 extern void blake3_per_cpu_ctx_init(void);
 extern void blake3_per_cpu_ctx_fini(void);
 
-/* return number of supported implementations */
-extern int blake3_get_impl_count(void);
+/* get count of supported implementations */
+extern uint32_t blake3_impl_getcnt(void);
 
-/* return id of selected implementation */
-extern int blake3_get_impl_id(void);
+/* get id of selected implementation */
+extern uint32_t blake3_impl_getid(void);
 
-/* return name of selected implementation */
-extern const char *blake3_get_impl_name(void);
+/* get name of selected implementation */
+extern const char *blake3_impl_getname(void);
 
 /* setup id as fastest implementation */
-extern void blake3_set_impl_fastest(uint32_t id);
+extern void blake3_impl_set_fastest(uint32_t id);
 
 /* set implementation by id */
-extern void blake3_set_impl_id(uint32_t id);
+extern void blake3_impl_setid(uint32_t id);
 
 /* set implementation by name */
-extern int blake3_set_impl_name(const char *name);
-
-/* set startup implementation */
-extern void blake3_setup_impl(void);
+extern int blake3_impl_setname(const char *name);
 
 #ifdef __cplusplus
 }