47 lines
964 B
C
47 lines
964 B
C
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/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*/
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#ifndef FTL_DF_H
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#define FTL_DF_H
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#include "spdk/stdinc.h"
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/* Durable format (df) object is an offset */
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typedef uint64_t ftl_df_obj_id;
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#define FTL_DF_OBJ_ID_INVALID ((ftl_df_obj_id)-1)
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/**
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* @brief Convert df object ptr to df object id
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*
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* @param base allocation base address
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* @param df_obj_ptr df object ptr
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*
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* @return df object id
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*/
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static inline ftl_df_obj_id
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ftl_df_get_obj_id(void *base, void *df_obj_ptr)
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{
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assert(base <= df_obj_ptr);
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return ((char *)df_obj_ptr - (char *)base);
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}
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/**
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* @brief Convert df object id to df object ptr
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*
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* @param base allocation base address
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* @param df_obj_id df object id
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*
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* @return df object ptr
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*/
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static inline void *
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ftl_df_get_obj_ptr(void *base, ftl_df_obj_id df_obj_id)
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{
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assert(df_obj_id != FTL_DF_OBJ_ID_INVALID);
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return ((char *)base + df_obj_id);
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}
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#endif /* FTL_DF_H */
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