FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/sys/vdev_raidz.h

     /*
      * 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 https://opensource.org/licenses/CDDL-1.0.
     * 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) 2016 Gvozden Neskovic <neskovic@compeng.uni-frankfurt.de>.
     */
    
    #ifndef _SYS_VDEV_RAIDZ_H
    #define _SYS_VDEV_RAIDZ_H
    
    #include <sys/types.h>
    
    #ifdef  __cplusplus
    extern "C" {
    #endif
    
    struct zio;
    struct raidz_col;
    struct raidz_row;
    struct raidz_map;
    #if !defined(_KERNEL)
    struct kernel_param {};
    #endif
    
    /*
     * vdev_raidz interface
     */
    struct raidz_map *vdev_raidz_map_alloc(struct zio *, uint64_t, uint64_t,
        uint64_t);
    void vdev_raidz_map_free(struct raidz_map *);
    void vdev_raidz_generate_parity_row(struct raidz_map *, struct raidz_row *);
    void vdev_raidz_generate_parity(struct raidz_map *);
    void vdev_raidz_reconstruct(struct raidz_map *, const int *, int);
    void vdev_raidz_child_done(zio_t *);
    void vdev_raidz_io_done(zio_t *);
    void vdev_raidz_checksum_error(zio_t *, struct raidz_col *, abd_t *);
    
    extern const zio_vsd_ops_t vdev_raidz_vsd_ops;
    
    /*
     * vdev_raidz_math interface
     */
    void vdev_raidz_math_init(void);
    void vdev_raidz_math_fini(void);
    const struct raidz_impl_ops *vdev_raidz_math_get_ops(void);
    int vdev_raidz_math_generate(struct raidz_map *, struct raidz_row *);
    int vdev_raidz_math_reconstruct(struct raidz_map *, struct raidz_row *,
        const int *, const int *, const int);
    int vdev_raidz_impl_set(const char *);
    
    typedef struct vdev_raidz {
            int vd_logical_width;
            int vd_nparity;
    } vdev_raidz_t;
    
    #ifdef  __cplusplus
    }
    #endif
    
    #endif /* _SYS_VDEV_RAIDZ_H */

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