rte_eal_memconfig.h

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2014 Intel Corporation
 */

#ifndef _RTE_EAL_MEMCONFIG_H_
#define _RTE_EAL_MEMCONFIG_H_

#include <rte_config.h>
#include <rte_tailq.h>
#include <rte_memory.h>
#include <rte_memzone.h>
#include <rte_malloc_heap.h>
#include <rte_rwlock.h>
#include <rte_pause.h>
#include <rte_fbarray.h>

#ifdef __cplusplus
extern "C" {
#endif

struct rte_memseg_list {
        RTE_STD_C11
        union {
                void *base_va;
                uint64_t addr_64;
        };
        uint64_t page_sz; 
        int socket_id; 
        volatile uint32_t version; 
        size_t len; 
        unsigned int external; 
        struct rte_fbarray memseg_arr;
};

struct rte_mem_config {
        volatile uint32_t magic;   
        /* memory topology */
        uint32_t nchannel;    
        uint32_t nrank;       
        rte_rwlock_t mlock;   
        rte_rwlock_t qlock;   
        rte_rwlock_t mplock;  
        rte_rwlock_t memory_hotplug_lock;
        /* memory segments and zones */
        struct rte_fbarray memzones; 
        struct rte_memseg_list memsegs[RTE_MAX_MEMSEG_LISTS];
        struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; 
        /* Heaps of Malloc */
        struct malloc_heap malloc_heaps[RTE_MAX_HEAPS];

        /* next socket ID for external malloc heap */
        int next_socket_id;

        /* address of mem_config in primary process. used to map shared config into
         * exact same address the primary process maps it.
         */
        uint64_t mem_cfg_addr;

        /* legacy mem and single file segments options are shared */
        uint32_t legacy_mem;
        uint32_t single_file_segments;

        /* keeps the more restricted dma mask */
        uint8_t dma_maskbits;
} __attribute__((__packed__));


inline static void
rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
{
        /* wait until shared mem_config finish initialising */
        while(mcfg->magic != RTE_MAGIC)
                rte_pause();
}

#ifdef __cplusplus
}
#endif

#endif /*__RTE_EAL_MEMCONFIG_H_*/