mirror of https://github.com/F-Stack/f-stack.git
101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2019 Intel Corporation
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*/
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#ifndef EAL_MEMCFG_H
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#define EAL_MEMCFG_H
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#include <rte_memory.h>
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#include <rte_memzone.h>
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#include <rte_pause.h>
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#include <rte_spinlock.h>
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#include <rte_rwlock.h>
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#include <rte_tailq.h>
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#include "malloc_heap.h"
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/**
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* Memory configuration shared across multiple processes.
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*/
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struct rte_mem_config {
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volatile uint32_t magic; /**< Magic number - sanity check. */
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uint32_t version;
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/**< Prevent secondary processes using different DPDK versions. */
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/* memory topology */
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uint32_t nchannel; /**< Number of channels (0 if unknown). */
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uint32_t nrank; /**< Number of ranks (0 if unknown). */
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/**
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* current lock nest order
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* - qlock->mlock (ring/hash/lpm)
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* - mplock->qlock->mlock (mempool)
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* Notice:
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* *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
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*/
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rte_rwlock_t mlock; /**< used by memzones for thread safety. */
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rte_rwlock_t qlock; /**< used by tailqs for thread safety. */
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rte_rwlock_t mplock; /**< used by mempool library for thread safety. */
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rte_spinlock_t tlock; /**< used by timer library for thread safety. */
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rte_rwlock_t memory_hotplug_lock;
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/**< Indicates whether memory hotplug request is in progress. */
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uint8_t mp_status; /**< Multiprocess status. */
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/* memory segments and zones */
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struct rte_fbarray memzones; /**< Memzone descriptors. */
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struct rte_memseg_list memsegs[RTE_MAX_MEMSEG_LISTS];
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/**< List of dynamic arrays holding memsegs */
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struct rte_tailq_head tailq_head[RTE_MAX_TAILQ];
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/**< Tailqs for objects */
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struct malloc_heap malloc_heaps[RTE_MAX_HEAPS];
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/**< DPDK malloc heaps */
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int next_socket_id; /**< Next socket ID for external malloc heap */
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/* rte_mem_config has to be mapped at the exact same address in all
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* processes, so we need to store it.
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*/
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uint64_t mem_cfg_addr; /**< Address of this structure in memory. */
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/* Primary and secondary processes cannot run with different legacy or
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* single file segments options, so to avoid having to specify these
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* options to all processes, store them in shared config and update the
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* internal config at init time.
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*/
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uint32_t legacy_mem; /**< stored legacy mem parameter. */
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uint32_t single_file_segments;
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/**< stored single file segments parameter. */
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uint64_t tsc_hz;
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/**< TSC rate */
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uint8_t dma_maskbits; /**< Keeps the more restricted dma mask. */
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};
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/* update internal config from shared mem config */
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void
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eal_mcfg_update_internal(void);
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/* update shared mem config from internal config */
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void
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eal_mcfg_update_from_internal(void);
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/* wait until primary process initialization is complete */
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void
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eal_mcfg_wait_complete(void);
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/* check if DPDK version of current process matches one stored in the config */
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int
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eal_mcfg_check_version(void);
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/* set mem config as complete */
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void
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eal_mcfg_complete(void);
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#endif /* EAL_MEMCFG_H */
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