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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>
48 * Index type of tailq_head
51 #define rte_tailq_elem(idx, name) idx,
52 #define rte_tailq_end(idx) idx
53 #include <rte_tailq_elem.h>
57 * the structure for the memory configuration for the RTE.
58 * Used by the rte_config structure. It is separated out, as for multi-process
59 * support, the memory details should be shared across instances
61 struct rte_mem_config {
62 volatile uint32_t magic; /**< Magic number - Sanity check. */
65 uint32_t nchannel; /**< Number of channels (0 if unknown). */
66 uint32_t nrank; /**< Number of ranks (0 if unknown). */
69 * current lock nest order
70 * - qlock->mlock (ring/hash/lpm)
71 * - mplock->qlock->mlock (mempool)
73 * *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
75 rte_rwlock_t mlock; /**< only used by memzone LIB for thread-safe. */
76 rte_rwlock_t qlock; /**< used for tailq operation for thread safe. */
77 rte_rwlock_t mplock; /**< only used by mempool LIB for thread-safe. */
79 uint32_t memzone_idx; /**< Index of memzone */
81 /* memory segments and zones */
82 struct rte_memseg memseg[RTE_MAX_MEMSEG]; /**< Physmem descriptors. */
83 struct rte_memzone memzone[RTE_MAX_MEMZONE]; /**< Memzone descriptors. */
85 /* Runtime Physmem descriptors. */
86 struct rte_memseg free_memseg[RTE_MAX_MEMSEG];
88 struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
90 /* Heaps of Malloc per socket */
91 struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
93 /* address of mem_config in primary process. used to map shared config into
94 * exact same address the primary process maps it.
96 uint64_t mem_cfg_addr;
97 } __attribute__((__packed__));
101 rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
103 /* wait until shared mem_config finish initialising */
104 while(mcfg->magic != RTE_MAGIC)
112 #endif /*__RTE_EAL_MEMCONFIG_H_*/