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59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* Copyright (C) 2014-2015 Martine S. Lenders <m.lenders@fu-berlin.de>
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* Copyright (C) 2014-2021 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup net_gnrc_pktbuf
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* @brief Internal definitions of the static implementation of
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* @ref net_gnrc_pktbuf
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* @{
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*
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* @file
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* @brief Definitions of types and their alignment for usage in tests
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*
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* @author Martine Lenders <m.lenders@fu-berlin.de>
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*/
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#ifndef PKTBUF_STATIC_H
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#define PKTBUF_STATIC_H
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Mask to align packet buffer allocations with size of @ref _unused_t
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*/
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#define GNRC_PKTBUF_STATIC_ALIGN_MASK (sizeof(_unused_t) - 1)
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/**
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* @brief Marks an unused section of the packet buffer arena array
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*/
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typedef struct _unused {
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struct _unused *next; /**< the next unused section */
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unsigned int size; /**< the size of the unused section */
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} _unused_t;
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/**
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* @brief Calculates the required space of a number of bytes including
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* alignment to the size of @ref _unused_t
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*/
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static inline size_t _align(size_t size)
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{
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return (size + GNRC_PKTBUF_STATIC_ALIGN_MASK) &
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~(GNRC_PKTBUF_STATIC_ALIGN_MASK);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* PKTBUF_STATIC_H */
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/** @} */
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