99a2dd955f
There is no reason for the DPDK libraries to all have 'librte_' prefix on the directory names. This prefix makes the directory names longer and also makes it awkward to add features referring to individual libraries in the build - should the lib names be specified with or without the prefix. Therefore, we can just remove the library prefix and use the library's unique name as the directory name, i.e. 'eal' rather than 'librte_eal' Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
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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