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 http://www.opensolaris.org/os/licensing.
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_row;
36 struct raidz_map;
37 #if !defined(_KERNEL)
38 struct kernel_param {};
39 #endif
40 
41 /*
42  * vdev_raidz interface
43  */
44 struct raidz_map *vdev_raidz_map_alloc(struct zio *, uint64_t, uint64_t,
45     uint64_t);
46 void vdev_raidz_map_free(struct raidz_map *);
47 void vdev_raidz_generate_parity_row(struct raidz_map *, struct raidz_row *);
48 void vdev_raidz_generate_parity(struct raidz_map *);
49 void vdev_raidz_reconstruct(struct raidz_map *, const int *, int);
50 void vdev_raidz_child_done(zio_t *);
51 void vdev_raidz_io_done(zio_t *);
52 
53 extern const zio_vsd_ops_t vdev_raidz_vsd_ops;
54 
55 /*
56  * vdev_raidz_math interface
57  */
58 void vdev_raidz_math_init(void);
59 void vdev_raidz_math_fini(void);
60 const struct raidz_impl_ops *vdev_raidz_math_get_ops(void);
61 int vdev_raidz_math_generate(struct raidz_map *, struct raidz_row *);
62 int vdev_raidz_math_reconstruct(struct raidz_map *, struct raidz_row *,
63     const int *, const int *, const int);
64 int vdev_raidz_impl_set(const char *);
65 
66 typedef struct vdev_raidz {
67 	int vd_logical_width;
68 	int vd_nparity;
69 } vdev_raidz_t;
70 
71 #ifdef	__cplusplus
72 }
73 #endif
74 
75 #endif /* _SYS_VDEV_RAIDZ_H */
76