#include <rte_dev.h>
#include <rte_lcore.h>
+#include <rte_memory.h>
/**
* Structure storing internal configuration (per-lcore)
*/
int rte_eal_check_module(const char *module_name);
+/**
+ * Memory reservation flags.
+ */
+enum eal_mem_reserve_flags {
+ /**
+ * Reserve hugepages. May be unsupported by some platforms.
+ */
+ EAL_RESERVE_HUGEPAGES = 1 << 0,
+ /**
+ * Force reserving memory at the requested address.
+ * This can be a destructive action depending on the implementation.
+ *
+ * @see RTE_MAP_FORCE_ADDRESS for description of possible consequences
+ * (although implementations are not required to use it).
+ */
+ EAL_RESERVE_FORCE_ADDRESS = 1 << 1
+};
+
/**
* Get virtual area of specified size from the OS.
*
* Page size on which to align requested virtual area.
* @param flags
* EAL_VIRTUAL_AREA_* flags.
- * @param mmap_flags
- * Extra flags passed directly to mmap().
+ * @param reserve_flags
+ * Extra flags passed directly to eal_mem_reserve().
*
* @return
* Virtual area address if successful.
/**< immediately unmap reserved virtual area. */
void *
eal_get_virtual_area(void *requested_addr, size_t *size,
- size_t page_sz, int flags, int mmap_flags);
+ size_t page_sz, int flags, int reserve_flags);
+
+/**
+ * Initialize a memory segment list and create its backing storage.
+ *
+ * @param msl
+ * Memory segment list to be filled.
+ * @param name
+ * Name for the backing storage.
+ * @param page_sz
+ * Size of segment pages in the MSL.
+ * @param n_segs
+ * Number of segments.
+ * @param socket_id
+ * Socket ID. Must not be SOCKET_ID_ANY.
+ * @param heap
+ * Mark MSL as pointing to a heap.
+ * @return
+ * 0 on success, (-1) on failure and rte_errno is set.
+ */
+int
+eal_memseg_list_init_named(struct rte_memseg_list *msl, const char *name,
+ uint64_t page_sz, int n_segs, int socket_id, bool heap);
+
+/**
+ * Initialize memory segment list and create its backing storage
+ * with a name corresponding to MSL parameters.
+ *
+ * @param type_msl_idx
+ * Index of the MSL among other MSLs of the same socket and page size.
+ *
+ * @see eal_memseg_list_init_named for remaining parameters description.
+ */
+int
+eal_memseg_list_init(struct rte_memseg_list *msl, uint64_t page_sz,
+ int n_segs, int socket_id, int type_msl_idx, bool heap);
+
+/**
+ * Reserve VA space for a memory segment list
+ * previously initialized with eal_memseg_list_init().
+ *
+ * @param msl
+ * Initialized memory segment list with page size defined.
+ * @param reserve_flags
+ * Extra memory reservation flags. Can be 0 if unnecessary.
+ * @return
+ * 0 on success, (-1) on failure and rte_errno is set.
+ */
+int
+eal_memseg_list_alloc(struct rte_memseg_list *msl, int reserve_flags);
+
+/**
+ * Populate MSL, each segment is one page long.
+ *
+ * @param msl
+ * Initialized memory segment list with page size defined.
+ * @param addr
+ * Starting address of list segments.
+ * @param n_segs
+ * Number of segments to populate.
+ */
+void
+eal_memseg_list_populate(struct rte_memseg_list *msl, void *addr, int n_segs);
/**
* Get cpu core_id.
int
eal_file_truncate(int fd, ssize_t size);
+/**
+ * Reserve a region of virtual memory.
+ *
+ * Use eal_mem_free() to free reserved memory.
+ *
+ * @param requested_addr
+ * A desired reservation address which must be page-aligned.
+ * The system might not respect it.
+ * NULL means the address will be chosen by the system.
+ * @param size
+ * Reservation size. Must be a multiple of system page size.
+ * @param flags
+ * Reservation options, a combination of eal_mem_reserve_flags.
+ * @returns
+ * Starting address of the reserved area on success, NULL on failure.
+ * Callers must not access this memory until remapping it.
+ */
+void *
+eal_mem_reserve(void *requested_addr, size_t size, int flags);
+
+/**
+ * Free memory obtained by eal_mem_reserve() or eal_mem_alloc().
+ *
+ * If *virt* and *size* describe a part of the reserved region,
+ * only this part of the region is freed (accurately up to the system
+ * page size). If *virt* points to allocated memory, *size* must match
+ * the one specified on allocation. The behavior is undefined
+ * if the memory pointed by *virt* is obtained from another source
+ * than listed above.
+ *
+ * @param virt
+ * A virtual address in a region previously reserved.
+ * @param size
+ * Number of bytes to unreserve.
+ */
+void
+eal_mem_free(void *virt, size_t size);
+
+/**
+ * Configure memory region inclusion into dumps.
+ *
+ * @param virt
+ * Starting address of the region.
+ * @param size
+ * Size of the region.
+ * @param dump
+ * True to include memory into dumps, false to exclude.
+ * @return
+ * 0 on success, (-1) on failure and rte_errno is set.
+ */
+int
+eal_mem_set_dump(void *virt, size_t size, bool dump);
+
#endif /* _EAL_PRIVATE_H_ */