[dpdk-dev] [PATCH 1/4] app/test: enhance test_port_ring_writer

Robert Sanford rsanford2 at gmail.com
Mon Mar 28 22:51:34 CEST 2016


Add code to send two 60-packet bursts to a ring port_out.
This tests a ring writer buffer overflow problem and fix
(in patch 2/4).

Signed-off-by: Robert Sanford <rsanford at akamai.com>
---
 app/test/test_table_ports.c |   27 +++++++++++++++++++++++++--
 1 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/app/test/test_table_ports.c b/app/test/test_table_ports.c
index 2532367..0c0ec0a 100644
--- a/app/test/test_table_ports.c
+++ b/app/test/test_table_ports.c
@@ -149,8 +149,8 @@ test_port_ring_writer(void)
 
 	/* -- Traffic TX -- */
 	int expected_pkts, received_pkts;
-	struct rte_mbuf *mbuf[RTE_PORT_IN_BURST_SIZE_MAX];
-	struct rte_mbuf *res_mbuf[RTE_PORT_IN_BURST_SIZE_MAX];
+	struct rte_mbuf *mbuf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
+	struct rte_mbuf *res_mbuf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
 
 	port_ring_writer_params.ring = RING_TX;
 	port_ring_writer_params.tx_burst_sz = RTE_PORT_IN_BURST_SIZE_MAX;
@@ -216,5 +216,28 @@ test_port_ring_writer(void)
 	for (i = 0; i < RTE_PORT_IN_BURST_SIZE_MAX; i++)
 		rte_pktmbuf_free(res_mbuf[i]);
 
+	/* TX Bulk - send two 60-packet bursts */
+	uint64_t pkt_mask = 0xfffffffffffffff0ULL;
+
+	for (i = 0; i < 4; i++)
+		mbuf[i] = NULL;
+	for (i = 4; i < 64; i++)
+		mbuf[i] = rte_pktmbuf_alloc(pool);
+	rte_port_ring_writer_ops.f_tx_bulk(port, mbuf, pkt_mask);
+	for (i = 4; i < 64; i++)
+		mbuf[i] = rte_pktmbuf_alloc(pool);
+	rte_port_ring_writer_ops.f_tx_bulk(port, mbuf, pkt_mask);
+	rte_port_ring_writer_ops.f_flush(port);
+
+	expected_pkts = 2 * 60;
+	received_pkts = rte_ring_sc_dequeue_burst(port_ring_writer_params.ring,
+		(void **)res_mbuf, 2 * RTE_PORT_IN_BURST_SIZE_MAX);
+
+	if (received_pkts != expected_pkts)
+		return -10;
+
+	for (i = 0; i < received_pkts; i++)
+		rte_pktmbuf_free(res_mbuf[i]);
+
 	return 0;
 }
-- 
1.7.1



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