Function test8

dpdk/app/test/test_lpm.c:364–442

* Use rte_lpm_add to add rules which effect only the second half of the lpm * table. Use all possible depths ranging from 1..32. Set the next hop = to the * depth. Check lookup hit for on every add and check for lookup miss on the * first half of the lpm table after each add. Finally delete all rules going * backwards (i.e. from depth = 32 ..1) and carry out a lookup after each * delete. The

 * previous depth value (i.e. depth -1).
 */
int32_t
test8(void)
{
	xmm_t ipx4;
	uint32_t hop[4];
	struct rte_lpm *lpm = NULL;
	struct rte_lpm_config config;

	config.max_rules = MAX_RULES;
	config.number_tbl8s = NUMBER_TBL8S;
	config.flags = 0;
	uint32_t ip1 = RTE_IPV4(127, 255, 255, 255), ip2 = RTE_IPV4(128, 0, 0, 0);
	uint32_t next_hop_add, next_hop_return;
	uint8_t depth;
	int32_t status = 0;

	lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, &config);
	TEST_LPM_ASSERT(lpm != NULL);

	/* Loop with rte_lpm_add. */
	for (depth = 1; depth <= 32; depth++) {
		/* Let the next_hop_add value = depth. Just for change. */
		next_hop_add = depth;

		status = rte_lpm_add(lpm, ip2, depth, next_hop_add);
		TEST_LPM_ASSERT(status == 0);

		/* Check IP in first half of tbl24 which should be empty. */
		status = rte_lpm_lookup(lpm, ip1, &next_hop_return);
		TEST_LPM_ASSERT(status == -ENOENT);

		status = rte_lpm_lookup(lpm, ip2, &next_hop_return);
		TEST_LPM_ASSERT((status == 0) &&
			(next_hop_return == next_hop_add));

		ipx4 = vect_set_epi32(ip2, ip1, ip2, ip1);
		rte_lpm_lookupx4(lpm, ipx4, hop, UINT32_MAX);
		TEST_LPM_ASSERT(hop[0] == UINT32_MAX);
		TEST_LPM_ASSERT(hop[1] == next_hop_add);
		TEST_LPM_ASSERT(hop[2] == UINT32_MAX);
		TEST_LPM_ASSERT(hop[3] == next_hop_add);
	}

	/* Loop with rte_lpm_delete. */
	for (depth = 32; depth >= 1; depth--) {
		next_hop_add = (uint8_t) (depth - 1);

		status = rte_lpm_delete(lpm, ip2, depth);
		TEST_LPM_ASSERT(status == 0);

		status = rte_lpm_lookup(lpm, ip2, &next_hop_return);

		if (depth != 1) {
			TEST_LPM_ASSERT((status == 0) &&
				(next_hop_return == next_hop_add));
		} else {
			TEST_LPM_ASSERT(status == -ENOENT);
		}