- }
- printf("Average LPM Lookup: %.1f cycles (fails = %.1f%%)\n",
- (double)total_time / ((double)ITERATIONS * BATCH_SIZE),
- (count * 100.0) / (double)(ITERATIONS * BATCH_SIZE));
-
- /* Measure bulk Lookup */
- total_time = 0;
- count = 0;
- for (i = 0; i < ITERATIONS; i ++) {
- static uint32_t ip_batch[BATCH_SIZE];
- uint16_t next_hops[BULK_SIZE];
-
- /* Create array of random IP addresses */
- for (j = 0; j < BATCH_SIZE; j ++)
- ip_batch[j] = rte_rand();
-
- /* Lookup per batch */
- begin = rte_rdtsc();
- for (j = 0; j < BATCH_SIZE; j += BULK_SIZE) {
- unsigned k;
- rte_lpm_lookup_bulk(lpm, &ip_batch[j], next_hops, BULK_SIZE);
- for (k = 0; k < BULK_SIZE; k++)
- if (unlikely(!(next_hops[k] & RTE_LPM_LOOKUP_SUCCESS)))
- count++;
- }
+ status = rte_lpm_add(lpm, ip, depth, next_hop);
+ TEST_LPM_ASSERT(status == 0);
+
+ rte_rcu_qsbr_thread_offline(qsv, 0);
+ status = rte_rcu_qsbr_thread_unregister(qsv, 0);
+ TEST_LPM_ASSERT(status == 0);
+
+ status = rte_lpm_lookup(lpm, ip, &next_hop_return);
+ TEST_LPM_ASSERT(status == 0);
+ TEST_LPM_ASSERT(next_hop_return == next_hop);
+
+ rte_lpm_free(lpm);
+ rte_free(qsv);
+
+ return PASS;
+}
+
+static struct rte_lpm *g_lpm;
+static struct rte_rcu_qsbr *g_v;
+static uint32_t g_ip = RTE_IPV4(192, 0, 2, 100);
+static volatile uint8_t writer_done;
+/* Report quiescent state interval every 1024 lookups. Larger critical
+ * sections in reader will result in writer polling multiple times.
+ */
+#define QSBR_REPORTING_INTERVAL 1024
+#define WRITER_ITERATIONS 512
+
+/*
+ * Reader thread using rte_lpm data structure with RCU.
+ */
+static int
+test_lpm_rcu_qsbr_reader(void *arg)
+{
+ int i;
+ uint32_t next_hop_return = 0;
+
+ RTE_SET_USED(arg);
+ /* Register this thread to report quiescent state */
+ rte_rcu_qsbr_thread_register(g_v, 0);
+ rte_rcu_qsbr_thread_online(g_v, 0);
+
+ do {
+ for (i = 0; i < QSBR_REPORTING_INTERVAL; i++)
+ rte_lpm_lookup(g_lpm, g_ip, &next_hop_return);
+
+ /* Update quiescent state */
+ rte_rcu_qsbr_quiescent(g_v, 0);
+ } while (!writer_done);
+
+ rte_rcu_qsbr_thread_offline(g_v, 0);
+ rte_rcu_qsbr_thread_unregister(g_v, 0);
+
+ return 0;
+}