[dpdk-dev] [PATCH] add sample functions for packet forwarding

[Jananee Parthasarathy <jananeex.m.parthasarathy@intel.com>]

From: Jananee Parthasarathy <jananeex.m.parthasarathy@intel.com> 

Add sample test functions for packet forwarding.
These can be used for unit test cases for
LatencyStats and BitrateStats libraries.

Signed-off-by: Chaitanya Babu Talluri <tallurix.chaitanya.babu@intel.com>
Reviewed-by: Reshma Pattan <reshma.pattan@intel.com>
---
 test/test/Makefile                |  1 +
 test/test/sample_packet_forward.c | 80 +++++++++++++++++++++++++++++++++++++++
 test/test/sample_packet_forward.h | 22 +++++++++++
 3 files changed, 103 insertions(+)
 create mode 100644 test/test/sample_packet_forward.c
 create mode 100644 test/test/sample_packet_forward.h

diff --git a/test/test/Makefile b/test/test/Makefile
index eccc8efcf..1e69f37a1 100644
--- a/test/test/Makefile
+++ b/test/test/Makefile
@@ -133,6 +133,7 @@ SRCS-y += test_version.c
 SRCS-y += test_func_reentrancy.c
 
 SRCS-y += test_service_cores.c
+SRCS-y += sample_packet_forward.c
 
 SRCS-$(CONFIG_RTE_LIBRTE_CMDLINE) += test_cmdline.c
 SRCS-$(CONFIG_RTE_LIBRTE_CMDLINE) += test_cmdline_num.c
diff --git a/test/test/sample_packet_forward.c b/test/test/sample_packet_forward.c
new file mode 100644
index 000000000..6f66b83f8
--- /dev/null
+++ b/test/test/sample_packet_forward.c
@@ -0,0 +1,80 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+
+#include <rte_memcpy.h>
+#include <rte_common.h>
+#include <rte_eth_ring.h>
+#include <rte_ethdev.h>
+
+#include "sample_packet_forward.h"
+#include "test.h"
+#include <rte_mbuf.h>
+
+#define NB_MBUF 512
+
+static struct rte_mempool *mp;
+uint16_t tx_portid, rx_portid;
+
+/* Sample test to create virtual rings and tx,rx portid from rings */
+int
+test_ring_setup(void)
+{
+	uint16_t socket_id = rte_socket_id();
+	struct rte_ring *rxtx[NUM_RINGS];
+	rxtx[0] = rte_ring_create("R0", RING_SIZE, socket_id,
+			RING_F_SP_ENQ|RING_F_SC_DEQ);
+	if (rxtx[0] == NULL) {
+		printf("%s() line %u: rte_ring_create R0 failed",
+				__func__, __LINE__);
+		return TEST_FAILED;
+	}
+	rxtx[1] = rte_ring_create("R1", RING_SIZE, socket_id,
+			RING_F_SP_ENQ|RING_F_SC_DEQ);
+	if (rxtx[1] == NULL) {
+		printf("%s() line %u: rte_ring_create R1 failed",
+				__func__, __LINE__);
+		return TEST_FAILED;
+	}
+	tx_portid = rte_eth_from_rings("net_ringa", rxtx, NUM_RINGS, rxtx,
+			NUM_RINGS, SOCKET0);
+	rx_portid = rte_eth_from_rings("net_ringb", rxtx, NUM_RINGS, rxtx,
+			NUM_RINGS, SOCKET0);
+
+	return TEST_SUCCESS;
+}
+
+/* Sample test to forward packets using virtual portids */
+int
+test_packet_forward(void)
+{
+	struct rte_mbuf *pbuf[NUM_PACKETS];
+
+	mp = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32, 0,
+			RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+	if (mp == NULL)
+		return -1;
+	if (rte_pktmbuf_alloc_bulk(mp, pbuf, NUM_PACKETS) != 0)
+		printf("%s() line %u: rte_pktmbuf_alloc_bulk failed"
+				, __func__, __LINE__);
+	/* send and receive packet and check for stats update */
+	if (rte_eth_tx_burst(tx_portid, 0, pbuf, NUM_PACKETS) !=
+			NUM_PACKETS) {
+		printf("%s() line %u: Error sending packet to"
+				" port %d\n", __func__, __LINE__,
+				tx_portid);
+		return TEST_FAILED;
+	}
+	if (rte_eth_rx_burst(rx_portid, 0, pbuf, NUM_PACKETS) !=
+			NUM_PACKETS) {
+		printf("%s() line %u: Error receiving packet from"
+				" port %d\n", __func__, __LINE__,
+				rx_portid);
+		return TEST_FAILED;
+	}
+	return TEST_SUCCESS;
+}
diff --git a/test/test/sample_packet_forward.h b/test/test/sample_packet_forward.h
new file mode 100644
index 000000000..464f97c33
--- /dev/null
+++ b/test/test/sample_packet_forward.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+#ifndef _SAMPLE_PACKET_FORWARD_H_
+#define _SAMPLE_PACKET_FORWARD_H_
+
+/* MACROS to support virtual ring creation */
+#define SOCKET0 0
+#define RING_SIZE 256
+#define NUM_RINGS 2
+
+#define NUM_PACKETS 10
+
+/* Sample test to create virtual rings and tx,rx portid from rings */
+int test_ring_setup(void);
+
+/* Sample test to forward packet using virtual port id */
+int test_packet_forward(void);
+
+#endif /* _SAMPLE_PACKET_FORWARD_H_ */
+
-- 
2.13.6