#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>
+#include <stdbool.h>
+
+#include <rte_compat.h>
+
+/**
+ * @file
+ *
+ * This API allows access to EAL shared memory configuration through an API.
+ */
#ifdef __cplusplus
extern "C" {
#endif
/**
- * memseg list is a special case as we need to store a bunch of other data
- * together with the array itself.
- */
-struct rte_memseg_list {
- RTE_STD_C11
- union {
- void *base_va;
- /**< Base virtual address for this memseg list. */
- uint64_t addr_64;
- /**< Makes sure addr is always 64-bits */
- };
- uint64_t page_sz; /**< Page size for all memsegs in this list. */
- int socket_id; /**< Socket ID for all memsegs in this list. */
- volatile uint32_t version; /**< version number for multiprocess sync. */
- size_t len; /**< Length of memory area covered by this memseg list. */
- struct rte_fbarray memseg_arr;
-};
-
-/**
- * the structure for the memory configuration for the RTE.
- * Used by the rte_config structure. It is separated out, as for multi-process
- * support, the memory details should be shared across instances
- */
-struct rte_mem_config {
- volatile uint32_t magic; /**< Magic number - Sanity check. */
-
- /* memory topology */
- uint32_t nchannel; /**< Number of channels (0 if unknown). */
- uint32_t nrank; /**< Number of ranks (0 if unknown). */
-
- /**
- * current lock nest order
- * - qlock->mlock (ring/hash/lpm)
- * - mplock->qlock->mlock (mempool)
- * Notice:
- * *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
- */
- rte_rwlock_t mlock; /**< only used by memzone LIB for thread-safe. */
- rte_rwlock_t qlock; /**< used for tailq operation for thread safe. */
- rte_rwlock_t mplock; /**< only used by mempool LIB for thread-safe. */
-
- rte_rwlock_t memory_hotplug_lock;
- /**< indicates whether memory hotplug request is in progress. */
-
- /* memory segments and zones */
- struct rte_fbarray memzones; /**< Memzone descriptors. */
-
- struct rte_memseg_list memsegs[RTE_MAX_MEMSEG_LISTS];
- /**< list of dynamic arrays holding memsegs */
-
- struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
-
- /* Heaps of Malloc per socket */
- struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
-
- /* 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;
-} __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();
-}
+ * Lock the internal EAL shared memory configuration for shared access.
+ */
+void
+rte_mcfg_mem_read_lock(void);
+
+/**
+ * Unlock the internal EAL shared memory configuration for shared access.
+ */
+void
+rte_mcfg_mem_read_unlock(void);
+
+/**
+ * Lock the internal EAL shared memory configuration for exclusive access.
+ */
+void
+rte_mcfg_mem_write_lock(void);
+
+/**
+ * Unlock the internal EAL shared memory configuration for exclusive access.
+ */
+void
+rte_mcfg_mem_write_unlock(void);
+
+/**
+ * Lock the internal EAL TAILQ list for shared access.
+ */
+void
+rte_mcfg_tailq_read_lock(void);
+
+/**
+ * Unlock the internal EAL TAILQ list for shared access.
+ */
+void
+rte_mcfg_tailq_read_unlock(void);
+
+/**
+ * Lock the internal EAL TAILQ list for exclusive access.
+ */
+void
+rte_mcfg_tailq_write_lock(void);
+
+/**
+ * Unlock the internal EAL TAILQ list for exclusive access.
+ */
+void
+rte_mcfg_tailq_write_unlock(void);
+
+/**
+ * Lock the internal EAL Mempool list for shared access.
+ */
+void
+rte_mcfg_mempool_read_lock(void);
+
+/**
+ * Unlock the internal EAL Mempool list for shared access.
+ */
+void
+rte_mcfg_mempool_read_unlock(void);
+
+/**
+ * Lock the internal EAL Mempool list for exclusive access.
+ */
+void
+rte_mcfg_mempool_write_lock(void);
+
+/**
+ * Unlock the internal EAL Mempool list for exclusive access.
+ */
+void
+rte_mcfg_mempool_write_unlock(void);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Lock the internal EAL Timer Library lock for exclusive access.
+ */
+__rte_experimental
+void
+rte_mcfg_timer_lock(void);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Unlock the internal EAL Timer Library lock for exclusive access.
+ */
+__rte_experimental
+void
+rte_mcfg_timer_unlock(void);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * If true, pages are put in single files (per memseg list),
+ * as opposed to creating a file per page.
+ */
+__rte_experimental
+bool
+rte_mcfg_get_single_file_segments(void);
#ifdef __cplusplus
}
git.droids-corp.org / dpdk.git / blobdiff