+#ifndef RTE_MEMPOOL_ALIGN
+#define RTE_MEMPOOL_ALIGN RTE_CACHE_LINE_SIZE
+#endif
+
+#define RTE_MEMPOOL_ALIGN_MASK (RTE_MEMPOOL_ALIGN - 1)
+
+/**
+ * Mempool object header structure
+ *
+ * Each object stored in mempools are prefixed by this header structure,
+ * it allows to retrieve the mempool pointer from the object. When debug
+ * is enabled, a cookie is also added in this structure preventing
+ * corruptions and double-frees.
+ */
+struct rte_mempool_objhdr {
+ struct rte_mempool *mp; /**< The mempool owning the object. */
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ uint64_t cookie; /**< Debug cookie. */
+#endif
+};
+
+/**
+ * Mempool object trailer structure
+ *
+ * In debug mode, each object stored in mempools are suffixed by this
+ * trailer structure containing a cookie preventing memory corruptions.
+ */
+struct rte_mempool_objtlr {
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+ uint64_t cookie; /**< Debug cookie. */
+#endif
+};
+