Function test_add_delete

dpdk/app/test/test_hash.c:276–347

* Basic sequence of operations for a single key: * - add * - lookup (hit) * - delete * - lookup (miss) * * Repeat the test case when 'free on delete' is disabled. * - add * - lookup (hit) * - delete * - lookup (miss) * - free */

 *	- free
 */
static int test_add_delete(void)
{
	struct rte_hash *handle;
	/* test with standard add/lookup/delete functions */
	int pos0, expectedPos0;

	ut_params.name = "test1";
	handle = rte_hash_create(&ut_params);
	RETURN_IF_ERROR(handle == NULL, "hash creation failed");

	pos0 = rte_hash_add_key(handle, &keys[0]);
	print_key_info("Add", &keys[0], pos0);
	RETURN_IF_ERROR(pos0 < 0, "failed to add key (pos0=%d)", pos0);
	expectedPos0 = pos0;

	pos0 = rte_hash_lookup(handle, &keys[0]);
	print_key_info("Lkp", &keys[0], pos0);
	RETURN_IF_ERROR(pos0 != expectedPos0,
			"failed to find key (pos0=%d)", pos0);

	pos0 = rte_hash_del_key(handle, &keys[0]);
	print_key_info("Del", &keys[0], pos0);
	RETURN_IF_ERROR(pos0 != expectedPos0,
			"failed to delete key (pos0=%d)", pos0);

	pos0 = rte_hash_lookup(handle, &keys[0]);
	print_key_info("Lkp", &keys[0], pos0);
	RETURN_IF_ERROR(pos0 != -ENOENT,
			"fail: found key after deleting! (pos0=%d)", pos0);

	rte_hash_free(handle);

	/* repeat test with precomputed hash functions */
	hash_sig_t hash_value;
	int pos1, expectedPos1, delPos1;

	ut_params.extra_flag = RTE_HASH_EXTRA_FLAGS_NO_FREE_ON_DEL;
	handle = rte_hash_create(&ut_params);
	RETURN_IF_ERROR(handle == NULL, "hash creation failed");
	ut_params.extra_flag = 0;

	hash_value = rte_hash_hash(handle, &keys[0]);
	pos1 = rte_hash_add_key_with_hash(handle, &keys[0], hash_value);
	print_key_info("Add", &keys[0], pos1);
	RETURN_IF_ERROR(pos1 < 0, "failed to add key (pos1=%d)", pos1);
	expectedPos1 = pos1;

	pos1 = rte_hash_lookup_with_hash(handle, &keys[0], hash_value);
	print_key_info("Lkp", &keys[0], pos1);
	RETURN_IF_ERROR(pos1 != expectedPos1,
			"failed to find key (pos1=%d)", pos1);

	pos1 = rte_hash_del_key_with_hash(handle, &keys[0], hash_value);
	print_key_info("Del", &keys[0], pos1);
	RETURN_IF_ERROR(pos1 != expectedPos1,
			"failed to delete key (pos1=%d)", pos1);
	delPos1 = pos1;