1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or https://opensource.org/licenses/CDDL-1.0.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright (C) 2016 Gvozden Neskovic <neskovic@compeng.uni-frankfurt.de>.
23  */
24 
25 #ifndef _SYS_VDEV_RAIDZ_H
26 #define	_SYS_VDEV_RAIDZ_H
27 
28 #include <sys/types.h>
29 
30 #ifdef	__cplusplus
31 extern "C" {
32 #endif
33 
34 struct zio;
35 struct raidz_col;
36 struct raidz_row;
37 struct raidz_map;
38 #if !defined(_KERNEL)
39 struct kernel_param {};
40 #endif
41 
42 /*
43  * vdev_raidz interface
44  */
45 struct raidz_map *vdev_raidz_map_alloc(struct zio *, uint64_t, uint64_t,
46     uint64_t);
47 void vdev_raidz_map_free(struct raidz_map *);
48 void vdev_raidz_generate_parity_row(struct raidz_map *, struct raidz_row *);
49 void vdev_raidz_generate_parity(struct raidz_map *);
50 void vdev_raidz_reconstruct(struct raidz_map *, const int *, int);
51 void vdev_raidz_child_done(zio_t *);
52 void vdev_raidz_io_done(zio_t *);
53 void vdev_raidz_checksum_error(zio_t *, struct raidz_col *, abd_t *);
54 
55 extern const zio_vsd_ops_t vdev_raidz_vsd_ops;
56 
57 /*
58  * vdev_raidz_math interface
59  */
60 void vdev_raidz_math_init(void);
61 void vdev_raidz_math_fini(void);
62 const struct raidz_impl_ops *vdev_raidz_math_get_ops(void);
63 int vdev_raidz_math_generate(struct raidz_map *, struct raidz_row *);
64 int vdev_raidz_math_reconstruct(struct raidz_map *, struct raidz_row *,
65     const int *, const int *, const int);
66 int vdev_raidz_impl_set(const char *);
67 
68 typedef struct vdev_raidz {
69 	int vd_logical_width;
70 	int vd_nparity;
71 } vdev_raidz_t;
72 
73 #ifdef	__cplusplus
74 }
75 #endif
76 
77 #endif /* _SYS_VDEV_RAIDZ_H */
78