X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=test%2Ftest%2Ftest_ring.c;h=5eb40a0f942e0df357a19eff661fa5fea19fb5c9;hb=4c00cfdc0ea225f2518a35db928ad1ab02b2a724;hp=112433b838d2571108103953fc9963ededa66fa7;hpb=cfa7c9e6fc1f7b248d8f250966851bdd19d7b9c2;p=dpdk.git

diff --git a/test/test/test_ring.c b/test/test/test_ring.c
index 112433b838..5eb40a0f94 100644
--- a/test/test/test_ring.c
+++ b/test/test/test_ring.c
@@ -43,7 +43,6 @@
 #include <rte_common.h>
 #include <rte_log.h>
 #include <rte_memory.h>
-#include <rte_memzone.h>
 #include <rte_launch.h>
 #include <rte_cycles.h>
 #include <rte_eal.h>
@@ -54,7 +53,6 @@
 #include <rte_malloc.h>
 #include <rte_ring.h>
 #include <rte_random.h>
-#include <rte_common.h>
 #include <rte_errno.h>
 #include <rte_hexdump.h>
 
@@ -117,18 +115,21 @@ test_ring_basic_full_empty(void * const src[], void *dst[])
 		rand = RTE_MAX(rte_rand() % RING_SIZE, 1UL);
 		printf("%s: iteration %u, random shift: %u;\n",
 		    __func__, i, rand);
-		TEST_RING_VERIFY(rte_ring_enqueue_bulk(r, src, rand) != 0);
-		TEST_RING_VERIFY(rte_ring_dequeue_bulk(r, dst, rand) == rand);
+		TEST_RING_VERIFY(rte_ring_enqueue_bulk(r, src, rand,
+				NULL) != 0);
+		TEST_RING_VERIFY(rte_ring_dequeue_bulk(r, dst, rand,
+				NULL) == rand);
 
 		/* fill the ring */
-		TEST_RING_VERIFY(rte_ring_enqueue_bulk(r, src, rsz) != 0);
+		TEST_RING_VERIFY(rte_ring_enqueue_bulk(r, src, rsz, NULL) != 0);
 		TEST_RING_VERIFY(0 == rte_ring_free_count(r));
 		TEST_RING_VERIFY(rsz == rte_ring_count(r));
 		TEST_RING_VERIFY(rte_ring_full(r));
 		TEST_RING_VERIFY(0 == rte_ring_empty(r));
 
 		/* empty the ring */
-		TEST_RING_VERIFY(rte_ring_dequeue_bulk(r, dst, rsz) == rsz);
+		TEST_RING_VERIFY(rte_ring_dequeue_bulk(r, dst, rsz,
+				NULL) == rsz);
 		TEST_RING_VERIFY(rsz == rte_ring_free_count(r));
 		TEST_RING_VERIFY(0 == rte_ring_count(r));
 		TEST_RING_VERIFY(0 == rte_ring_full(r));
@@ -167,37 +168,37 @@ test_ring_basic(void)
 	cur_dst = dst;
 
 	printf("enqueue 1 obj\n");
-	ret = rte_ring_sp_enqueue_bulk(r, cur_src, 1);
+	ret = rte_ring_sp_enqueue_bulk(r, cur_src, 1, NULL);
 	cur_src += 1;
 	if (ret == 0)
 		goto fail;
 
 	printf("enqueue 2 objs\n");
-	ret = rte_ring_sp_enqueue_bulk(r, cur_src, 2);
+	ret = rte_ring_sp_enqueue_bulk(r, cur_src, 2, NULL);
 	cur_src += 2;
 	if (ret == 0)
 		goto fail;
 
 	printf("enqueue MAX_BULK objs\n");
-	ret = rte_ring_sp_enqueue_bulk(r, cur_src, MAX_BULK);
+	ret = rte_ring_sp_enqueue_bulk(r, cur_src, MAX_BULK, NULL);
 	cur_src += MAX_BULK;
 	if (ret == 0)
 		goto fail;
 
 	printf("dequeue 1 obj\n");
-	ret = rte_ring_sc_dequeue_bulk(r, cur_dst, 1);
+	ret = rte_ring_sc_dequeue_bulk(r, cur_dst, 1, NULL);
 	cur_dst += 1;
 	if (ret == 0)
 		goto fail;
 
 	printf("dequeue 2 objs\n");
-	ret = rte_ring_sc_dequeue_bulk(r, cur_dst, 2);
+	ret = rte_ring_sc_dequeue_bulk(r, cur_dst, 2, NULL);
 	cur_dst += 2;
 	if (ret == 0)
 		goto fail;
 
 	printf("dequeue MAX_BULK objs\n");
-	ret = rte_ring_sc_dequeue_bulk(r, cur_dst, MAX_BULK);
+	ret = rte_ring_sc_dequeue_bulk(r, cur_dst, MAX_BULK, NULL);
 	cur_dst += MAX_BULK;
 	if (ret == 0)
 		goto fail;
@@ -213,37 +214,37 @@ test_ring_basic(void)
 	cur_dst = dst;
 
 	printf("enqueue 1 obj\n");
-	ret = rte_ring_mp_enqueue_bulk(r, cur_src, 1);
+	ret = rte_ring_mp_enqueue_bulk(r, cur_src, 1, NULL);
 	cur_src += 1;
 	if (ret == 0)
 		goto fail;
 
 	printf("enqueue 2 objs\n");
-	ret = rte_ring_mp_enqueue_bulk(r, cur_src, 2);
+	ret = rte_ring_mp_enqueue_bulk(r, cur_src, 2, NULL);
 	cur_src += 2;
 	if (ret == 0)
 		goto fail;
 
 	printf("enqueue MAX_BULK objs\n");
-	ret = rte_ring_mp_enqueue_bulk(r, cur_src, MAX_BULK);
+	ret = rte_ring_mp_enqueue_bulk(r, cur_src, MAX_BULK, NULL);
 	cur_src += MAX_BULK;
 	if (ret == 0)
 		goto fail;
 
 	printf("dequeue 1 obj\n");
-	ret = rte_ring_mc_dequeue_bulk(r, cur_dst, 1);
+	ret = rte_ring_mc_dequeue_bulk(r, cur_dst, 1, NULL);
 	cur_dst += 1;
 	if (ret == 0)
 		goto fail;
 
 	printf("dequeue 2 objs\n");
-	ret = rte_ring_mc_dequeue_bulk(r, cur_dst, 2);
+	ret = rte_ring_mc_dequeue_bulk(r, cur_dst, 2, NULL);
 	cur_dst += 2;
 	if (ret == 0)
 		goto fail;
 
 	printf("dequeue MAX_BULK objs\n");
-	ret = rte_ring_mc_dequeue_bulk(r, cur_dst, MAX_BULK);
+	ret = rte_ring_mc_dequeue_bulk(r, cur_dst, MAX_BULK, NULL);
 	cur_dst += MAX_BULK;
 	if (ret == 0)
 		goto fail;
@@ -260,11 +261,11 @@ test_ring_basic(void)
 
 	printf("fill and empty the ring\n");
 	for (i = 0; i<RING_SIZE/MAX_BULK; i++) {
-		ret = rte_ring_mp_enqueue_bulk(r, cur_src, MAX_BULK);
+		ret = rte_ring_mp_enqueue_bulk(r, cur_src, MAX_BULK, NULL);
 		cur_src += MAX_BULK;
 		if (ret == 0)
 			goto fail;
-		ret = rte_ring_mc_dequeue_bulk(r, cur_dst, MAX_BULK);
+		ret = rte_ring_mc_dequeue_bulk(r, cur_dst, MAX_BULK, NULL);
 		cur_dst += MAX_BULK;
 		if (ret == 0)
 			goto fail;
@@ -290,25 +291,25 @@ test_ring_basic(void)
 	cur_src = src;
 	cur_dst = dst;
 
-	ret = rte_ring_enqueue_bulk(r, cur_src, num_elems);
+	ret = rte_ring_enqueue_bulk(r, cur_src, num_elems, NULL);
 	cur_src += num_elems;
 	if (ret == 0) {
 		printf("Cannot enqueue\n");
 		goto fail;
 	}
-	ret = rte_ring_enqueue_bulk(r, cur_src, num_elems);
+	ret = rte_ring_enqueue_bulk(r, cur_src, num_elems, NULL);
 	cur_src += num_elems;
 	if (ret == 0) {
 		printf("Cannot enqueue\n");
 		goto fail;
 	}
-	ret = rte_ring_dequeue_bulk(r, cur_dst, num_elems);
+	ret = rte_ring_dequeue_bulk(r, cur_dst, num_elems, NULL);
 	cur_dst += num_elems;
 	if (ret == 0) {
 		printf("Cannot dequeue\n");
 		goto fail;
 	}
-	ret = rte_ring_dequeue_bulk(r, cur_dst, num_elems);
+	ret = rte_ring_dequeue_bulk(r, cur_dst, num_elems, NULL);
 	cur_dst += num_elems;
 	if (ret == 0) {
 		printf("Cannot dequeue2\n");
@@ -371,39 +372,39 @@ test_ring_burst_basic(void)
 
 	printf("Test SP & SC basic functions \n");
 	printf("enqueue 1 obj\n");
-	ret = rte_ring_sp_enqueue_burst(r, cur_src, 1);
+	ret = rte_ring_sp_enqueue_burst(r, cur_src, 1, NULL);
 	cur_src += 1;
-	if ((ret & RTE_RING_SZ_MASK) != 1)
+	if (ret != 1)
 		goto fail;
 
 	printf("enqueue 2 objs\n");
-	ret = rte_ring_sp_enqueue_burst(r, cur_src, 2);
+	ret = rte_ring_sp_enqueue_burst(r, cur_src, 2, NULL);
 	cur_src += 2;
-	if ((ret & RTE_RING_SZ_MASK) != 2)
+	if (ret != 2)
 		goto fail;
 
 	printf("enqueue MAX_BULK objs\n");
-	ret = rte_ring_sp_enqueue_burst(r, cur_src, MAX_BULK) ;
+	ret = rte_ring_sp_enqueue_burst(r, cur_src, MAX_BULK, NULL);
 	cur_src += MAX_BULK;
-	if ((ret & RTE_RING_SZ_MASK) != MAX_BULK)
+	if (ret != MAX_BULK)
 		goto fail;
 
 	printf("dequeue 1 obj\n");
-	ret = rte_ring_sc_dequeue_burst(r, cur_dst, 1) ;
+	ret = rte_ring_sc_dequeue_burst(r, cur_dst, 1, NULL);
 	cur_dst += 1;
-	if ((ret & RTE_RING_SZ_MASK) != 1)
+	if (ret != 1)
 		goto fail;
 
 	printf("dequeue 2 objs\n");
-	ret = rte_ring_sc_dequeue_burst(r, cur_dst, 2);
+	ret = rte_ring_sc_dequeue_burst(r, cur_dst, 2, NULL);
 	cur_dst += 2;
-	if ((ret & RTE_RING_SZ_MASK) != 2)
+	if (ret != 2)
 		goto fail;
 
 	printf("dequeue MAX_BULK objs\n");
-	ret = rte_ring_sc_dequeue_burst(r, cur_dst, MAX_BULK);
+	ret = rte_ring_sc_dequeue_burst(r, cur_dst, MAX_BULK, NULL);
 	cur_dst += MAX_BULK;
-	if ((ret & RTE_RING_SZ_MASK) != MAX_BULK)
+	if (ret != MAX_BULK)
 		goto fail;
 
 	/* check data */
@@ -419,24 +420,23 @@ test_ring_burst_basic(void)
 
 	printf("Test enqueue without enough memory space \n");
 	for (i = 0; i< (RING_SIZE/MAX_BULK - 1); i++) {
-		ret = rte_ring_sp_enqueue_burst(r, cur_src, MAX_BULK);
+		ret = rte_ring_sp_enqueue_burst(r, cur_src, MAX_BULK, NULL);
 		cur_src += MAX_BULK;
-		if ((ret & RTE_RING_SZ_MASK) != MAX_BULK) {
+		if (ret != MAX_BULK)
 			goto fail;
-		}
 	}
 
 	printf("Enqueue 2 objects, free entries = MAX_BULK - 2  \n");
-	ret = rte_ring_sp_enqueue_burst(r, cur_src, 2);
+	ret = rte_ring_sp_enqueue_burst(r, cur_src, 2, NULL);
 	cur_src += 2;
-	if ((ret & RTE_RING_SZ_MASK) != 2)
+	if (ret != 2)
 		goto fail;
 
 	printf("Enqueue the remaining entries = MAX_BULK - 2  \n");
 	/* Always one free entry left */
-	ret = rte_ring_sp_enqueue_burst(r, cur_src, MAX_BULK);
+	ret = rte_ring_sp_enqueue_burst(r, cur_src, MAX_BULK, NULL);
 	cur_src += MAX_BULK - 3;
-	if ((ret & RTE_RING_SZ_MASK) != MAX_BULK - 3)
+	if (ret != MAX_BULK - 3)
 		goto fail;
 
 	printf("Test if ring is full  \n");
@@ -444,27 +444,27 @@ test_ring_burst_basic(void)
 		goto fail;
 
 	printf("Test enqueue for a full entry  \n");
-	ret = rte_ring_sp_enqueue_burst(r, cur_src, MAX_BULK);
-	if ((ret & RTE_RING_SZ_MASK) != 0)
+	ret = rte_ring_sp_enqueue_burst(r, cur_src, MAX_BULK, NULL);
+	if (ret != 0)
 		goto fail;
 
 	printf("Test dequeue without enough objects \n");
 	for (i = 0; i<RING_SIZE/MAX_BULK - 1; i++) {
-		ret = rte_ring_sc_dequeue_burst(r, cur_dst, MAX_BULK);
+		ret = rte_ring_sc_dequeue_burst(r, cur_dst, MAX_BULK, NULL);
 		cur_dst += MAX_BULK;
-		if ((ret & RTE_RING_SZ_MASK) != MAX_BULK)
+		if (ret != MAX_BULK)
 			goto fail;
 	}
 
 	/* Available memory space for the exact MAX_BULK entries */
-	ret = rte_ring_sc_dequeue_burst(r, cur_dst, 2);
+	ret = rte_ring_sc_dequeue_burst(r, cur_dst, 2, NULL);
 	cur_dst += 2;
-	if ((ret & RTE_RING_SZ_MASK) != 2)
+	if (ret != 2)
 		goto fail;
 
-	ret = rte_ring_sc_dequeue_burst(r, cur_dst, MAX_BULK);
+	ret = rte_ring_sc_dequeue_burst(r, cur_dst, MAX_BULK, NULL);
 	cur_dst += MAX_BULK - 3;
-	if ((ret & RTE_RING_SZ_MASK) != MAX_BULK - 3)
+	if (ret != MAX_BULK - 3)
 		goto fail;
 
 	printf("Test if ring is empty \n");
@@ -486,39 +486,39 @@ test_ring_burst_basic(void)
 	printf("Test MP & MC basic functions \n");
 
 	printf("enqueue 1 obj\n");
-	ret = rte_ring_mp_enqueue_burst(r, cur_src, 1);
+	ret = rte_ring_mp_enqueue_burst(r, cur_src, 1, NULL);
 	cur_src += 1;
-	if ((ret & RTE_RING_SZ_MASK) != 1)
+	if (ret != 1)
 		goto fail;
 
 	printf("enqueue 2 objs\n");
-	ret = rte_ring_mp_enqueue_burst(r, cur_src, 2);
+	ret = rte_ring_mp_enqueue_burst(r, cur_src, 2, NULL);
 	cur_src += 2;
-	if ((ret & RTE_RING_SZ_MASK) != 2)
+	if (ret != 2)
 		goto fail;
 
 	printf("enqueue MAX_BULK objs\n");
-	ret = rte_ring_mp_enqueue_burst(r, cur_src, MAX_BULK);
+	ret = rte_ring_mp_enqueue_burst(r, cur_src, MAX_BULK, NULL);
 	cur_src += MAX_BULK;
-	if ((ret & RTE_RING_SZ_MASK) != MAX_BULK)
+	if (ret != MAX_BULK)
 		goto fail;
 
 	printf("dequeue 1 obj\n");
-	ret = rte_ring_mc_dequeue_burst(r, cur_dst, 1);
+	ret = rte_ring_mc_dequeue_burst(r, cur_dst, 1, NULL);
 	cur_dst += 1;
-	if ((ret & RTE_RING_SZ_MASK) != 1)
+	if (ret != 1)
 		goto fail;
 
 	printf("dequeue 2 objs\n");
-	ret = rte_ring_mc_dequeue_burst(r, cur_dst, 2);
+	ret = rte_ring_mc_dequeue_burst(r, cur_dst, 2, NULL);
 	cur_dst += 2;
-	if ((ret & RTE_RING_SZ_MASK) != 2)
+	if (ret != 2)
 		goto fail;
 
 	printf("dequeue MAX_BULK objs\n");
-	ret = rte_ring_mc_dequeue_burst(r, cur_dst, MAX_BULK);
+	ret = rte_ring_mc_dequeue_burst(r, cur_dst, MAX_BULK, NULL);
 	cur_dst += MAX_BULK;
-	if ((ret & RTE_RING_SZ_MASK) != MAX_BULK)
+	if (ret != MAX_BULK)
 		goto fail;
 
 	/* check data */
@@ -534,13 +534,13 @@ test_ring_burst_basic(void)
 
 	printf("fill and empty the ring\n");
 	for (i = 0; i<RING_SIZE/MAX_BULK; i++) {
-		ret = rte_ring_mp_enqueue_burst(r, cur_src, MAX_BULK);
+		ret = rte_ring_mp_enqueue_burst(r, cur_src, MAX_BULK, NULL);
 		cur_src += MAX_BULK;
-		if ((ret & RTE_RING_SZ_MASK) != MAX_BULK)
+		if (ret != MAX_BULK)
 			goto fail;
-		ret = rte_ring_mc_dequeue_burst(r, cur_dst, MAX_BULK);
+		ret = rte_ring_mc_dequeue_burst(r, cur_dst, MAX_BULK, NULL);
 		cur_dst += MAX_BULK;
-		if ((ret & RTE_RING_SZ_MASK) != MAX_BULK)
+		if (ret != MAX_BULK)
 			goto fail;
 	}
 
@@ -557,41 +557,41 @@ test_ring_burst_basic(void)
 
 	printf("Test enqueue without enough memory space \n");
 	for (i = 0; i<RING_SIZE/MAX_BULK - 1; i++) {
-		ret = rte_ring_mp_enqueue_burst(r, cur_src, MAX_BULK);
+		ret = rte_ring_mp_enqueue_burst(r, cur_src, MAX_BULK, NULL);
 		cur_src += MAX_BULK;
-		if ((ret & RTE_RING_SZ_MASK) != MAX_BULK)
+		if (ret != MAX_BULK)
 			goto fail;
 	}
 
 	/* Available memory space for the exact MAX_BULK objects */
-	ret = rte_ring_mp_enqueue_burst(r, cur_src, 2);
+	ret = rte_ring_mp_enqueue_burst(r, cur_src, 2, NULL);
 	cur_src += 2;
-	if ((ret & RTE_RING_SZ_MASK) != 2)
+	if (ret != 2)
 		goto fail;
 
-	ret = rte_ring_mp_enqueue_burst(r, cur_src, MAX_BULK);
+	ret = rte_ring_mp_enqueue_burst(r, cur_src, MAX_BULK, NULL);
 	cur_src += MAX_BULK - 3;
-	if ((ret & RTE_RING_SZ_MASK) != MAX_BULK - 3)
+	if (ret != MAX_BULK - 3)
 		goto fail;
 
 
 	printf("Test dequeue without enough objects \n");
 	for (i = 0; i<RING_SIZE/MAX_BULK - 1; i++) {
-		ret = rte_ring_mc_dequeue_burst(r, cur_dst, MAX_BULK);
+		ret = rte_ring_mc_dequeue_burst(r, cur_dst, MAX_BULK, NULL);
 		cur_dst += MAX_BULK;
-		if ((ret & RTE_RING_SZ_MASK) != MAX_BULK)
+		if (ret != MAX_BULK)
 			goto fail;
 	}
 
 	/* Available objects - the exact MAX_BULK */
-	ret = rte_ring_mc_dequeue_burst(r, cur_dst, 2);
+	ret = rte_ring_mc_dequeue_burst(r, cur_dst, 2, NULL);
 	cur_dst += 2;
-	if ((ret & RTE_RING_SZ_MASK) != 2)
+	if (ret != 2)
 		goto fail;
 
-	ret = rte_ring_mc_dequeue_burst(r, cur_dst, MAX_BULK);
+	ret = rte_ring_mc_dequeue_burst(r, cur_dst, MAX_BULK, NULL);
 	cur_dst += MAX_BULK - 3;
-	if ((ret & RTE_RING_SZ_MASK) != MAX_BULK - 3)
+	if (ret != MAX_BULK - 3)
 		goto fail;
 
 	/* check data */
@@ -607,12 +607,12 @@ test_ring_burst_basic(void)
 
 	printf("Covering rte_ring_enqueue_burst functions \n");
 
-	ret = rte_ring_enqueue_burst(r, cur_src, 2);
+	ret = rte_ring_enqueue_burst(r, cur_src, 2, NULL);
 	cur_src += 2;
-	if ((ret & RTE_RING_SZ_MASK) != 2)
+	if (ret != 2)
 		goto fail;
 
-	ret = rte_ring_dequeue_burst(r, cur_dst, 2);
+	ret = rte_ring_dequeue_burst(r, cur_dst, 2, NULL);
 	cur_dst += 2;
 	if (ret != 2)
 		goto fail;
@@ -746,13 +746,13 @@ test_ring_basic_ex(void)
 	}
 
 	/* Covering the ring burst operation */
-	ret = rte_ring_enqueue_burst(rp, obj, 2);
-	if ((ret & RTE_RING_SZ_MASK) != 2) {
+	ret = rte_ring_enqueue_burst(rp, obj, 2, NULL);
+	if (ret != 2) {
 		printf("test_ring_basic_ex: rte_ring_enqueue_burst fails \n");
 		goto fail_test;
 	}
 
-	ret = rte_ring_dequeue_burst(rp, obj, 2);
+	ret = rte_ring_dequeue_burst(rp, obj, 2, NULL);
 	if (ret != 2) {
 		printf("test_ring_basic_ex: rte_ring_dequeue_burst fails \n");
 		goto fail_test;
@@ -766,6 +766,77 @@ fail_test:
 	return ret;
 }
 
+static int
+test_ring_with_exact_size(void)
+{
+	struct rte_ring *std_ring = NULL, *exact_sz_ring = NULL;
+	void *ptr_array[16];
+	static const unsigned int ring_sz = RTE_DIM(ptr_array);
+	unsigned int i;
+	int ret = -1;
+
+	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__);
+		goto end;
+	}
+	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__);
+		goto end;
+	}
+
+	/*
+	 * 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));
+		goto end;
+	}
+	/*
+	 * 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__);
+		goto end;
+	}
+	if (rte_ring_enqueue(exact_sz_ring, NULL) == -ENOBUFS) {
+		printf("%s: error, enqueue failed\n", __func__);
+		goto end;
+	}
+
+	/* 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__);
+		goto end;
+	}
+
+	/* 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__);
+		goto end;
+	}
+
+	ret = 0; /* all ok if we get here */
+end:
+	rte_ring_free(std_ring);
+	rte_ring_free(exact_sz_ring);
+	return ret;
+}
+
 static int
 test_ring(void)
 {
@@ -817,6 +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);