Function test_pktmbuf_pool_bulk

dpdk/app/test/test_mbuf.c:724–888

* test bulk allocation and bulk free of mbufs */

 * test bulk allocation and bulk free of mbufs
 */
static int
test_pktmbuf_pool_bulk(void)
{
	struct rte_mempool *pool = NULL;
	struct rte_mempool *pool2 = NULL;
	unsigned int i;
	struct rte_mbuf *m;
	struct rte_mbuf *mbufs[NB_MBUF];
	int ret = 0;

	/* We cannot use the preallocated mbuf pools because their caches
	 * prevent us from bulk allocating all objects in them.
	 * So we create our own mbuf pools without caches.
	 */
	printf("Create mbuf pools for bulk allocation.\n");
	pool = rte_pktmbuf_pool_create("test_pktmbuf_bulk",
			NB_MBUF, 0, 0, MBUF_DATA_SIZE, SOCKET_ID_ANY);
	if (pool == NULL) {
		printf("rte_pktmbuf_pool_create() failed. rte_errno %d\n",
		       rte_errno);
		goto err;
	}
	pool2 = rte_pktmbuf_pool_create("test_pktmbuf_bulk2",
			NB_MBUF, 0, 0, MBUF_DATA_SIZE, SOCKET_ID_ANY);
	if (pool2 == NULL) {
		printf("rte_pktmbuf_pool_create() failed. rte_errno %d\n",
		       rte_errno);
		goto err;
	}

	/* Preconditions: Mempools must be full. */
	if (!(rte_mempool_full(pool) && rte_mempool_full(pool2))) {
		printf("Test precondition failed: mempools not full\n");
		goto err;
	}
	if (!(rte_mempool_avail_count(pool) == NB_MBUF &&
			rte_mempool_avail_count(pool2) == NB_MBUF)) {
		printf("Test precondition failed: mempools: %u+%u != %u+%u",
		       rte_mempool_avail_count(pool),
		       rte_mempool_avail_count(pool2),
		       NB_MBUF, NB_MBUF);
		goto err;
	}

	printf("Test single bulk alloc, followed by multiple bulk free.\n");

	/* Bulk allocate all mbufs in the pool, in one go. */
	ret = rte_pktmbuf_alloc_bulk(pool, mbufs, NB_MBUF);
	if (ret != 0) {
		printf("rte_pktmbuf_alloc_bulk() failed: %d\n", ret);
		goto err;
	}
	/* Test that they have been removed from the pool. */
	if (!rte_mempool_empty(pool)) {
		printf("mempool not empty\n");
		goto err;
	}
	/* Bulk free all mbufs, in four steps. */