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35 #ifndef _RTE_EAL_MEMCONFIG_H_
36 #define _RTE_EAL_MEMCONFIG_H_
38 #include <rte_tailq.h>
39 #include <rte_memory.h>
40 #include <rte_memzone.h>
41 #include <rte_malloc_heap.h>
42 #include <rte_rwlock.h>
49 * Index type of tailq_head
52 #define rte_tailq_elem(idx, name) idx,
53 #define rte_tailq_end(idx) idx
54 #include <rte_tailq_elem.h>
58 * the structure for the memory configuration for the RTE.
59 * Used by the rte_config structure. It is separated out, as for multi-process
60 * support, the memory details should be shared across instances
62 struct rte_mem_config {
63 volatile uint32_t magic; /**< Magic number - Sanity check. */
66 uint32_t nchannel; /**< Number of channels (0 if unknown). */
67 uint32_t nrank; /**< Number of ranks (0 if unknown). */
70 * current lock nest order
71 * - qlock->mlock (ring/hash/lpm)
72 * - mplock->qlock->mlock (mempool)
74 * *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
76 rte_rwlock_t mlock; /**< only used by memzone LIB for thread-safe. */
77 rte_rwlock_t qlock; /**< used for tailq operation for thread safe. */
78 rte_rwlock_t mplock; /**< only used by mempool LIB for thread-safe. */
80 uint32_t memzone_idx; /**< Index of memzone */
82 /* memory segments and zones */
83 struct rte_memseg memseg[RTE_MAX_MEMSEG]; /**< Physmem descriptors. */
84 struct rte_memzone memzone[RTE_MAX_MEMZONE]; /**< Memzone descriptors. */
86 /* Runtime Physmem descriptors. */
87 struct rte_memseg free_memseg[RTE_MAX_MEMSEG];
89 struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
91 /* Heaps of Malloc per socket */
92 struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
93 } __attribute__((__packed__));
97 rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
99 /* wait until shared mem_config finish initialising */
100 while(mcfg->magic != RTE_MAGIC)
108 #endif /*__RTE_EAL_MEMCONFIG_H_*/