Signed-off-by: Bruce Richardson <bruce.richard...@intel.com>
---
test/test/test_ring.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/test/test/test_ring.c b/test/test/test_ring.c
index 858ebc1..7f3b00d 100644
--- a/test/test/test_ring.c
+++ b/test/test/test_ring.c
@@ -770,6 +770,74 @@ test_ring_basic_ex(void)
}
static int
+test_ring_with_exact_size(void)
+{
+ struct rte_ring *std_ring, *exact_sz_ring;
+ void *ptr_array[16];
+ static const unsigned int ring_sz = RTE_DIM(ptr_array);
+ unsigned int i;
+
+ std_ring = rte_ring_create("std", ring_sz, rte_socket_id(),
+ RING_F_SP_ENQ | RING_F_SC_DEQ);
+ if (std_ring == NULL) {
+ printf("%s: error, can't create std ring\n", __func__);
+ return -1;
+ }
+ exact_sz_ring = rte_ring_create("exact sz", ring_sz, rte_socket_id(),
+ RING_F_SP_ENQ | RING_F_SC_DEQ | RING_F_EXACT_SZ);
+ if (exact_sz_ring == NULL) {
+ printf("%s: error, can't create exact size ring\n", __func__);
+ return -1;
+ }
+
+ /*
+ * Check that the exact size ring is bigger than the standard ring
+ */
+ if (rte_ring_get_size(std_ring) >= rte_ring_get_size(exact_sz_ring)) {
+ printf("%s: error, std ring (size: %u) is not smaller than
exact size one (size %u)\n",
+ __func__,
+ rte_ring_get_size(std_ring),
+ rte_ring_get_size(exact_sz_ring));
+ return -1;
+ }
+ /*
+ * check that the exact_sz_ring can hold one more element than the
+ * standard ring. (16 vs 15 elements)
+ */
+ for (i = 0; i < ring_sz - 1; i++) {
+ rte_ring_enqueue(std_ring, NULL);
+ rte_ring_enqueue(exact_sz_ring, NULL);
+ }
+ if (rte_ring_enqueue(std_ring, NULL) != -ENOBUFS) {
+ printf("%s: error, unexpected successful enqueue\n", __func__);
+ return -1;
+ }
+ if (rte_ring_enqueue(exact_sz_ring, NULL) == -ENOBUFS) {
+ printf("%s: error, enqueue failed\n", __func__);
+ return -1;
+ }
+
+ /* check that dequeue returns the expected number of elements */
+ if (rte_ring_dequeue_burst(exact_sz_ring, ptr_array,
+ RTE_DIM(ptr_array), NULL) != ring_sz) {
+ printf("%s: error, failed to dequeue expected nb of elements\n",
+ __func__);
+ return -1;
+ }
+
+ /* check that the capacity function returns expected value */
+ if (rte_ring_get_capacity(exact_sz_ring) != ring_sz) {
+ printf("%s: error, incorrect ring capacity reported\n",
+ __func__);
+ return -1;
+ }
+
+ rte_ring_free(std_ring);
+ rte_ring_free(exact_sz_ring);
+ return 0;
+}
+
+static int
test_ring(void)
{
/* some more basic operations */
@@ -820,6 +888,9 @@ test_ring(void)
if (test_ring_creation_with_an_used_name() < 0)
return -1;
+ if (test_ring_with_exact_size() < 0)
+ return -1;
+
/* dump the ring status */
rte_ring_list_dump(stdout);
--
2.9.4
