[dpdk-dev] [PATCH] app/test/ipsec: fix logic around dequeue burst

[Bernard Iremonger <bernard.iremonger@intel.com>]

Call rte_crypto_dequeue_burst() in a loop with
a delay to ensure that all the  packets are dequeued
from the crtpto device.

Fixes: 59d7353b0df0 ("test/ipsec: fix test suite setup")
Cc: stable@dpdk.org
Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
---
 app/test/test_ipsec.c | 42 +++++++++++++++++++++++++++++++-----------
 1 file changed, 31 insertions(+), 11 deletions(-)

diff --git a/app/test/test_ipsec.c b/app/test/test_ipsec.c
index 80a2d25..25a7df4 100644
--- a/app/test/test_ipsec.c
+++ b/app/test/test_ipsec.c
@@ -9,7 +9,7 @@
 #include <rte_mbuf.h>
 #include <rte_malloc.h>
 #include <rte_memcpy.h>
-#include <rte_pause.h>
+#include <rte_cycles.h>
 #include <rte_bus_vdev.h>
 #include <rte_ip.h>
 
@@ -42,6 +42,7 @@
 #define OUTBOUND_SPI	17
 #define BURST_SIZE		32
 #define REORDER_PKTS	1
+#define DEQUEUE_COUNT	1000
 
 struct user_params {
 	enum rte_crypto_sym_xform_type auth;
@@ -758,7 +759,9 @@ crypto_ipsec(uint16_t num_pkts)
 	struct ipsec_testsuite_params *ts_params = &testsuite_params;
 	struct ipsec_unitest_params *ut_params = &unittest_params;
 	uint32_t k, ng;
+	uint32_t pkt_cnt;
 	struct rte_ipsec_group grp[1];
+	int i;
 
 	/* call crypto prepare */
 	k = rte_ipsec_pkt_crypto_prepare(&ut_params->ss[0], ut_params->ibuf,
@@ -774,9 +777,15 @@ crypto_ipsec(uint16_t num_pkts)
 		return TEST_FAILED;
 	}
 
-	k = rte_cryptodev_dequeue_burst(ts_params->valid_dev, 0,
-		ut_params->cop, num_pkts);
-	if (k != num_pkts) {
+	for (i = 0, pkt_cnt = 0;
+		i < DEQUEUE_COUNT && pkt_cnt != num_pkts; i++) {
+		k = rte_cryptodev_dequeue_burst(ts_params->valid_dev, 0,
+				&ut_params->cop[pkt_cnt], num_pkts - pkt_cnt);
+		pkt_cnt += k;
+		rte_delay_us(1);
+	}
+
+	if (pkt_cnt != num_pkts) {
 		RTE_LOG(ERR, USER1, "rte_cryptodev_dequeue_burst fail\n");
 		return TEST_FAILED;
 	}
@@ -868,7 +877,7 @@ crypto_ipsec_2sa(void)
 	struct ipsec_testsuite_params *ts_params = &testsuite_params;
 	struct ipsec_unitest_params *ut_params = &unittest_params;
 	struct rte_ipsec_group grp[BURST_SIZE];
-
+	uint32_t pkt_cnt;
 	uint32_t k, ng, i, r;
 
 	for (i = 0; i < BURST_SIZE; i++) {
@@ -890,9 +899,14 @@ crypto_ipsec_2sa(void)
 		}
 	}
 
-	k = rte_cryptodev_dequeue_burst(ts_params->valid_dev, 0,
-		ut_params->cop, BURST_SIZE);
-	if (k != BURST_SIZE) {
+	for (i = 0, k = 0, pkt_cnt = 0;
+		i < DEQUEUE_COUNT && pkt_cnt != BURST_SIZE; i++) {
+		k = rte_cryptodev_dequeue_burst(ts_params->valid_dev, 0,
+				&ut_params->cop[pkt_cnt], BURST_SIZE - pkt_cnt);
+		pkt_cnt += k;
+		rte_delay_us(1);
+	}
+	if (pkt_cnt != BURST_SIZE) {
 		RTE_LOG(ERR, USER1, "rte_cryptodev_dequeue_burst fail\n");
 		return TEST_FAILED;
 	}
@@ -1007,6 +1021,7 @@ crypto_ipsec_2sa_4grp(void)
 	struct ipsec_unitest_params *ut_params = &unittest_params;
 	struct rte_ipsec_group grp[BURST_SIZE];
 	uint32_t k, ng, i, j;
+	uint32_t pkt_cnt;
 	uint32_t rc = 0;
 
 	for (i = 0; i < BURST_SIZE; i++) {
@@ -1029,9 +1044,14 @@ crypto_ipsec_2sa_4grp(void)
 		}
 	}
 
-	k = rte_cryptodev_dequeue_burst(ts_params->valid_dev, 0,
-		ut_params->cop, BURST_SIZE);
-	if (k != BURST_SIZE) {
+	for (i = 0, k = 0, pkt_cnt = 0;
+		i < DEQUEUE_COUNT && pkt_cnt != BURST_SIZE; i++) {
+		k = rte_cryptodev_dequeue_burst(ts_params->valid_dev, 0,
+				&ut_params->cop[pkt_cnt], BURST_SIZE - pkt_cnt);
+		pkt_cnt += k;
+		rte_delay_us(1);
+	}
+	if (pkt_cnt != BURST_SIZE) {
 		RTE_LOG(ERR, USER1, "rte_cryptodev_dequeue_burst fail\n");
 		return TEST_FAILED;
 	}
-- 
2.7.4