1 files changed, 276 insertions, 0 deletions
diff --git a/test/test/test_event_ring.c b/test/test/test_event_ring.c
new file mode 100644
index 00000000..c158c9b0
--- /dev/null
+++ b/test/test/test_event_ring.c
@@ -0,0 +1,276 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include <rte_event_ring.h>
+
+#include "test.h"
+
+/*
+ * Event Ring
+ * ===========
+ *
+ * Test some basic ops for the event rings.
+ * Does not fully test everything, since most code is reused from rte_ring
+ * library and tested as part of the normal ring autotests.
+ */
+
+#define RING_SIZE 4096
+#define MAX_BULK 32
+
+static struct rte_event_ring *r;
+
+/*
+ * ensure failure to create ring with a bad ring size
+ */
+static int
+test_event_ring_creation_with_wrong_size(void)
+{
+	struct rte_event_ring *rp = NULL;
+
+	/* Test if ring size is not power of 2 */
+	rp = rte_event_ring_create("test_bad_ring_size", RING_SIZE + 1,
+			SOCKET_ID_ANY, 0);
+	if (rp != NULL)
+		return -1;
+
+	/* Test if ring size is exceeding the limit */
+	rp = rte_event_ring_create("test_bad_ring_size", (RTE_RING_SZ_MASK + 1),
+			SOCKET_ID_ANY, 0);
+	if (rp != NULL)
+		return -1;
+	return 0;
+}
+
+/*
+ * Test to check if a non-power-of-2 count causes the create
+ * function to fail correctly
+ */
+static int
+test_create_count_odd(void)
+{
+	struct rte_event_ring *r = rte_event_ring_create("test_event_ring_count",
+			4097, SOCKET_ID_ANY, 0);
+	if (r != NULL)
+		return -1;
+	return 0;
+}
+
+static int
+test_lookup_null(void)
+{
+	struct rte_event_ring *rlp = rte_event_ring_lookup("ring_not_found");
+	if (rlp == NULL && rte_errno != ENOENT) {
+		printf("test failed to return error on null pointer\n");
+		return -1;
+	}
+	return 0;
+}
+
+static int
+test_basic_event_enqueue_dequeue(void)
+{
+	struct rte_event_ring *sr = NULL;
+	struct rte_event evs[16];
+	uint16_t ret, free_count, used_count;
+
+	memset(evs, 0, sizeof(evs));
+	sr = rte_event_ring_create("spsc_ring", 32, rte_socket_id(),
+			RING_F_SP_ENQ | RING_F_SC_DEQ);
+	if (sr == NULL) {
+		printf("Failed to create sp/sc ring\n");
+		return -1;
+	}
+	if (rte_event_ring_get_capacity(sr) != 31) {
+		printf("Error, invalid capacity\n");
+		goto error;
+	}
+
+	/* test sp/sc ring */
+	if (rte_event_ring_count(sr) != 0) {
+		printf("Error, ring not empty as expected\n");
+		goto error;
+	}
+	if (rte_event_ring_free_count(sr) != rte_event_ring_get_capacity(sr)) {
+		printf("Error, ring free count not as expected\n");
+		goto error;
+	}
+
+	ret = rte_event_ring_enqueue_burst(sr, evs, RTE_DIM(evs), &free_count);
+	if (ret != RTE_DIM(evs) ||
+			free_count != rte_event_ring_get_capacity(sr) - ret) {
+		printf("Error, status after enqueue is unexpected\n");
+		goto error;
+	}
+
+	ret = rte_event_ring_enqueue_burst(sr, evs, RTE_DIM(evs), &free_count);
+	if (ret != RTE_DIM(evs) - 1 ||
+			free_count != 0) {
+		printf("Error, status after enqueue is unexpected\n");
+		goto error;
+	}
+
+	ret = rte_event_ring_dequeue_burst(sr, evs, RTE_DIM(evs), &used_count);
+	if (ret != RTE_DIM(evs) ||
+			used_count != rte_event_ring_get_capacity(sr) - ret) {
+		printf("Error, status after enqueue is unexpected\n");
+		goto error;
+	}
+	ret = rte_event_ring_dequeue_burst(sr, evs, RTE_DIM(evs), &used_count);
+	if (ret != RTE_DIM(evs) - 1 ||
+			used_count != 0) {
+		printf("Error, status after enqueue is unexpected\n");
+		goto error;
+	}
+
+	rte_event_ring_free(sr);
+	return 0;
+error:
+	rte_event_ring_free(sr);
+	return -1;
+}
+
+static int
+test_event_ring_with_exact_size(void)
+{
+	struct rte_event_ring *std_ring, *exact_sz_ring;
+	struct rte_event ev = { .mbuf = NULL };
+	struct rte_event ev_array[16];
+	static const unsigned int ring_sz = RTE_DIM(ev_array);
+	unsigned int i;
+
+	std_ring = rte_event_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_event_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_event_ring_get_size(std_ring) >=
+			rte_event_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_event_ring_get_size(std_ring),
+				rte_event_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_event_ring_enqueue_burst(std_ring, &ev, 1, NULL);
+		rte_event_ring_enqueue_burst(exact_sz_ring, &ev, 1, NULL);
+	}
+	if (rte_event_ring_enqueue_burst(std_ring, &ev, 1, NULL) != 0) {
+		printf("%s: error, unexpected successful enqueue\n", __func__);
+		return -1;
+	}
+	if (rte_event_ring_enqueue_burst(exact_sz_ring, &ev, 1, NULL) != 1) {
+		printf("%s: error, enqueue failed\n", __func__);
+		return -1;
+	}
+
+	/* check that dequeue returns the expected number of elements */
+	if (rte_event_ring_dequeue_burst(exact_sz_ring, ev_array,
+			RTE_DIM(ev_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_event_ring_get_capacity(exact_sz_ring) != ring_sz) {
+		printf("%s: error, incorrect ring capacity reported\n",
+				__func__);
+		return -1;
+	}
+
+	rte_event_ring_free(std_ring);
+	rte_event_ring_free(exact_sz_ring);
+	return 0;
+}
+
+static int
+test_event_ring(void)
+{
+	if (r == NULL)
+		r = rte_event_ring_create("ev_test", RING_SIZE,
+				SOCKET_ID_ANY, 0);
+	if (r == NULL)
+		return -1;
+
+	/* retrieve the ring from its name */
+	if (rte_event_ring_lookup("ev_test") != r) {
+		printf("Cannot lookup ring from its name\n");
+		return -1;
+	}
+
+	/* basic operations */
+	if (test_create_count_odd() < 0) {
+		printf("Test failed to detect odd count\n");
+		return -1;
+	}
+	printf("Test detected odd count\n");
+
+	if (test_lookup_null() < 0) {
+		printf("Test failed to detect NULL ring lookup\n");
+		return -1;
+	}
+	printf("Test detected NULL ring lookup\n");
+
+	/* test of creating ring with wrong size */
+	if (test_event_ring_creation_with_wrong_size() < 0)
+		return -1;
+
+	if (test_basic_event_enqueue_dequeue() < 0)
+		return -1;
+
+	if (test_event_ring_with_exact_size() < 0)
+		return -1;
+
+	return 0;
+}
+
+REGISTER_TEST_COMMAND(event_ring_autotest, test_event_ring);