include/sys/vdev_raidz.h

   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 */