+/** Mask value of type <tp> for the first <ln> bit set. */
+#define RTE_LEN2MASK(ln, tp) \
+ ((tp)((uint64_t)-1 >> (sizeof(uint64_t) * CHAR_BIT - (ln))))
+
+/** Number of elements in the array. */
+#define RTE_DIM(a) (sizeof (a) / sizeof ((a)[0]))
+