Function rte_fast_rand

dpdk/lib/sched/rte_red.h:115–120

* @brief Generate random number for RED * * Implementation based on: * http://software.intel.com/en-us/articles/fast-random-number-generator-on-the-intel-pentiumr-4-processor/ * * 10 bit shift has been found through empirical tests (was 16). * * @return Random number between 0 and (2^22 - 1) */

 * @return Random number between 0 and (2^22 - 1)
 */
static inline uint32_t
rte_fast_rand(void)
{
	rte_red_rand_seed = (214013 * rte_red_rand_seed) + 2531011;
	return rte_red_rand_seed >> 10;
}

/**
 * @brief calculate factor to scale average queue size when queue