OpenZFS 8491 - uberblock on-disk padding to reserve space for smoothly merging zpool...

[zfs] / include / sys / zio_checksum.h

diff --git a/include/sys/zio_checksum.h b/include/sys/zio_checksum.h
index a6cafc9b266e0dd5fd5dfcd3f346c1366a739c35..45abd3bd313b63aee38db35882f7495022916d87 100644 (file)
--- a/include/sys/zio_checksum.h
+++ b/include/sys/zio_checksum.h
@@ -29,6 +29,7 @@
 
 #include <sys/zio.h>
 #include <zfeature_common.h>
+#include <zfs_fletcher.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -57,6 +58,28 @@ typedef enum zio_checksum_flags {
        ZCHECKSUM_FLAG_NOPWRITE = (1 << 5)
 } zio_checksum_flags_t;
 
+typedef enum {
+       ZIO_CHECKSUM_NATIVE,
+       ZIO_CHECKSUM_BYTESWAP
+} zio_byteorder_t;
+
+typedef struct zio_abd_checksum_data {
+       zio_byteorder_t         acd_byteorder;
+       fletcher_4_ctx_t        *acd_ctx;
+       zio_cksum_t             *acd_zcp;
+       void                    *acd_private;
+} zio_abd_checksum_data_t;
+
+typedef void zio_abd_checksum_init_t(zio_abd_checksum_data_t *);
+typedef void zio_abd_checksum_fini_t(zio_abd_checksum_data_t *);
+typedef int zio_abd_checksum_iter_t(void *, size_t, void *);
+
+typedef const struct zio_abd_checksum_func {
+       zio_abd_checksum_init_t *acf_init;
+       zio_abd_checksum_fini_t *acf_fini;
+       zio_abd_checksum_iter_t *acf_iter;
+} zio_abd_checksum_func_t;
+
 /*
  * Information about each checksum function.
  */
@@ -99,11 +122,15 @@ extern zio_checksum_t abd_checksum_edonr_byteswap;
 extern zio_checksum_tmpl_init_t abd_checksum_edonr_tmpl_init;
 extern zio_checksum_tmpl_free_t abd_checksum_edonr_tmpl_free;
 
+extern zio_abd_checksum_func_t fletcher_4_abd_ops;
+extern zio_checksum_t abd_fletcher_4_native;
+extern zio_checksum_t abd_fletcher_4_byteswap;
+
 extern int zio_checksum_equal(spa_t *, blkptr_t *, enum zio_checksum,
     void *, uint64_t, uint64_t, zio_bad_cksum_t *);
 extern void zio_checksum_compute(zio_t *, enum zio_checksum,
     struct abd *, uint64_t);
-extern int zio_checksum_error_impl(spa_t *, blkptr_t *, enum zio_checksum,
+extern int zio_checksum_error_impl(spa_t *, const blkptr_t *, enum zio_checksum,
     struct abd *, uint64_t, uint64_t, zio_bad_cksum_t *);
 extern int zio_checksum_error(zio_t *zio, zio_bad_cksum_t *out);
 extern enum zio_checksum spa_dedup_checksum(spa_t *spa);