UBUNTU: SAUCE: (noup) Update spl to 0.6.5.9-1, zfs to 0.6.5.9-2

[mirror_ubuntu-artful-kernel.git] / zfs / include / sys / zio_checksum.h

diff --git a/zfs/include/sys/zio_checksum.h b/zfs/include/sys/zio_checksum.h
new file mode 100644 (file)
index 0000000..de89bc9
--- /dev/null
+++ b/zfs/include/sys/zio_checksum.h
@@ -0,0 +1,75 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#ifndef _SYS_ZIO_CHECKSUM_H
+#define        _SYS_ZIO_CHECKSUM_H
+
+#include <sys/zio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Signature for checksum functions.
+ */
+typedef void zio_checksum_t(const void *data, uint64_t size, zio_cksum_t *zcp);
+
+/*
+ * Information about each checksum function.
+ */
+typedef const struct zio_checksum_info {
+       zio_checksum_t  *ci_func[2]; /* checksum function for each byteorder */
+       int             ci_correctable; /* number of correctable bits   */
+       int             ci_eck;         /* uses zio embedded checksum? */
+       int             ci_dedup;       /* strong enough for dedup? */
+       char            *ci_name;       /* descriptive name */
+} zio_checksum_info_t;
+
+typedef struct zio_bad_cksum {
+       zio_cksum_t             zbc_expected;
+       zio_cksum_t             zbc_actual;
+       const char              *zbc_checksum_name;
+       uint8_t                 zbc_byteswapped;
+       uint8_t                 zbc_injected;
+       uint8_t                 zbc_has_cksum;  /* expected/actual valid */
+} zio_bad_cksum_t;
+
+extern zio_checksum_info_t zio_checksum_table[ZIO_CHECKSUM_FUNCTIONS];
+
+/*
+ * Checksum routines.
+ */
+extern zio_checksum_t zio_checksum_SHA256;
+
+extern void zio_checksum_compute(zio_t *zio, enum zio_checksum checksum,
+    void *data, uint64_t size);
+extern int zio_checksum_error(zio_t *zio, zio_bad_cksum_t *out);
+extern enum zio_checksum spa_dedup_checksum(spa_t *spa);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_ZIO_CHECKSUM_H */