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34 #ifndef _RTE_EAL_MEMCONFIG_H_
35 #define _RTE_EAL_MEMCONFIG_H_
37 #include <rte_tailq.h>
38 #include <rte_memory.h>
39 #include <rte_memzone.h>
40 #include <rte_malloc_heap.h>
41 #include <rte_rwlock.h>
42 #include <rte_pause.h>
49 * the structure for the memory configuration for the RTE.
50 * Used by the rte_config structure. It is separated out, as for multi-process
51 * support, the memory details should be shared across instances
53 struct rte_mem_config {
54 volatile uint32_t magic; /**< Magic number - Sanity check. */
57 uint32_t nchannel; /**< Number of channels (0 if unknown). */
58 uint32_t nrank; /**< Number of ranks (0 if unknown). */
61 * current lock nest order
62 * - qlock->mlock (ring/hash/lpm)
63 * - mplock->qlock->mlock (mempool)
65 * *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
67 rte_rwlock_t mlock; /**< only used by memzone LIB for thread-safe. */
68 rte_rwlock_t qlock; /**< used for tailq operation for thread safe. */
69 rte_rwlock_t mplock; /**< only used by mempool LIB for thread-safe. */
71 uint32_t memzone_cnt; /**< Number of allocated memzones */
73 /* memory segments and zones */
74 struct rte_memseg memseg[RTE_MAX_MEMSEG]; /**< Physmem descriptors. */
75 struct rte_memzone memzone[RTE_MAX_MEMZONE]; /**< Memzone descriptors. */
77 struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
79 /* Heaps of Malloc per socket */
80 struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
82 /* address of mem_config in primary process. used to map shared config into
83 * exact same address the primary process maps it.
85 uint64_t mem_cfg_addr;
86 } __attribute__((__packed__));
90 rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
92 /* wait until shared mem_config finish initialising */
93 while(mcfg->magic != RTE_MAGIC)
101 #endif /*__RTE_EAL_MEMCONFIG_H_*/