Function depth_to_range

dpdk/lib/lpm/rte_lpm.c:99–112

* Converts given depth value to its corresponding range value. */

 * Converts given depth value to its corresponding range value.
 */
static uint32_t __attribute__((pure))
depth_to_range(uint8_t depth)
{
	VERIFY_DEPTH(depth);

	/*
	 * Calculate tbl24 range. (Note: 2^depth = 1 << depth)
	 */
	if (depth <= MAX_DEPTH_TBL24)
		return 1 << (MAX_DEPTH_TBL24 - depth);

	/* Else if depth is greater than 24 */
	return 1 << (RTE_LPM_MAX_DEPTH - depth);
}

/*
 * Find an existing lpm table and return a pointer to it.