fid_convert.h

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/* -*- C -*- */
/*
 * Copyright (c) 2015-2020 Seagate Technology LLC and/or its Affiliates
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * For any questions about this software or licensing,
 * please email opensource@seagate.com or cortx-questions@seagate.com.
 *
 */


#pragma once

#ifndef __MOTR_DIX_FID_CONVERT_H__
#define __MOTR_DIX_FID_CONVERT_H__

#include "lib/types.h"          /* uint32_t */

struct m0_fid;

enum {
        M0_DIX_FID_DEVICE_ID_BITS     = 24,
        M0_DIX_FID_DEVICE_ID_OFFSET   = 32,
        M0_DIX_FID_DEVICE_ID_MASK     = ((1ULL << M0_DIX_FID_DEVICE_ID_BITS) - 1)
                                        << M0_DIX_FID_DEVICE_ID_OFFSET,
        M0_DIX_FID_DEVICE_ID_MAX      = (1ULL << M0_DIX_FID_DEVICE_ID_BITS) - 1,
        M0_DIX_FID_DIX_CONTAINER_MASK = (1ULL << M0_DIX_FID_DEVICE_ID_OFFSET)
                                        - 1,
};

M0_INTERNAL void m0_dix_fid_dix_make(struct m0_fid *dix_fid,
                                     uint32_t       container,
                                     uint64_t       key);

M0_INTERNAL void m0_dix_fid_convert_dix2cctg(const struct m0_fid *dix_fid,
                                             struct m0_fid       *cctg_fid,
                                             uint32_t             device_id);
M0_INTERNAL void m0_dix_fid_convert_cctg2dix(const struct m0_fid *cctg_fid,
                                             struct m0_fid       *dix_fid);

M0_INTERNAL uint32_t m0_dix_fid_cctg_device_id(const struct m0_fid *cctg_fid);

M0_INTERNAL bool m0_dix_fid_validate_dix(const struct m0_fid *dix_fid);
M0_INTERNAL bool m0_dix_fid_validate_cctg(const struct m0_fid *cctg_fid);

M0_INTERNAL uint32_t m0_dix_fid__device_id_extract(const struct m0_fid *fid);

#endif /* __MOTR_DIX_FID_CONVERT_H__ */

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