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+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * version: DPDK.L.1.2.3-3
+ */
+
+#ifndef RTE_LINUXAPP_HUGEPAGES_H_
+#define RTE_LINUXAPP_HUGEPAGES_H_
+
+#define MAX_HUGEPAGE_PATH PATH_MAX
+
+/**
+ * Structure used to store informations about hugepages that we mapped
+ * through the files in hugetlbfs.
+ */
+struct hugepage {
+ void *orig_va; /**< virtual addr of first mmap() */
+ void *final_va; /**< virtual addr of 2nd mmap() */
+ uint64_t physaddr; /**< physical addr */
+ uint64_t size; /**< the page size */
+ int socket_id; /**< NUMA socket ID */
+ int file_id; /**< the '%d' in HUGEFILE_FMT */
+ int memseg_id; /**< the memory segment to which page belongs */
+ char filepath[MAX_HUGEPAGE_PATH]; /**< Path to backing file on filesystem */
+};
+
+/**
+ * Read the information from linux on what hugepages are available
+ * for the EAL to use
+ */
+int eal_hugepage_info_init(void);
+
+#endif /* EAL_HUGEPAGES_H_ */