[dpdk-dev] [PATCH v2 5/6] examples/flow_classify: flow classify sample application

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

The flow_classify sample application exercises the following
librte_flow_classify API's:

rte_flow_classify_create
rte_flow_classify_validate
rte_flow_classify_destroy
rte_flow_classify_query

It sets up the IPv4 ACL field definitions.
It creates table_acl using the librte_table API.

Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
---
 examples/flow_classify/Makefile        |  57 +++
 examples/flow_classify/flow_classify.c | 634 +++++++++++++++++++++++++++++++++
 2 files changed, 691 insertions(+)
 create mode 100644 examples/flow_classify/Makefile
 create mode 100644 examples/flow_classify/flow_classify.c

diff --git a/examples/flow_classify/Makefile b/examples/flow_classify/Makefile
new file mode 100644
index 0000000..eecdde1
--- /dev/null
+++ b/examples/flow_classify/Makefile
@@ -0,0 +1,57 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 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.
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, can be overridden by command line or environment
+RTE_TARGET ?= x86_64-native-linuxapp-gcc
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = flow_classify
+
+
+# all source are stored in SRCS-y
+SRCS-y := flow_classify.c
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+
+# workaround for a gcc bug with noreturn attribute
+# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
+ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
+CFLAGS_main.o += -Wno-return-type
+endif
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/examples/flow_classify/flow_classify.c b/examples/flow_classify/flow_classify.c
new file mode 100644
index 0000000..cc64e3d
--- /dev/null
+++ b/examples/flow_classify/flow_classify.c
@@ -0,0 +1,634 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 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 <stdint.h>
+#include <inttypes.h>
+#include <rte_eal.h>
+#include <rte_ethdev.h>
+#include <rte_cycles.h>
+#include <rte_lcore.h>
+#include <rte_mbuf.h>
+#include <rte_flow.h>
+#include <rte_flow_classify.h>
+#include <rte_table_acl.h>
+
+#define RX_RING_SIZE 128
+#define TX_RING_SIZE 512
+
+#define NUM_MBUFS 8191
+#define MBUF_CACHE_SIZE 250
+#define BURST_SIZE 32
+#define MAX_NUM_CLASSIFY 5
+#define FLOW_CLASSIFY_MAX_RULE_NUM 10
+
+static const struct rte_eth_conf port_conf_default = {
+	.rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
+};
+
+static void *table_acl;
+
+/* ACL field definitions for IPv4 5 tuple rule */
+
+enum {
+	PROTO_FIELD_IPV4,
+	SRC_FIELD_IPV4,
+	DST_FIELD_IPV4,
+	SRCP_FIELD_IPV4,
+	DSTP_FIELD_IPV4,
+	NUM_FIELDS_IPV4
+};
+
+enum {
+	PROTO_INPUT_IPV4,
+	SRC_INPUT_IPV4,
+	DST_INPUT_IPV4,
+	SRCP_DESTP_INPUT_IPV4
+};
+
+static struct rte_acl_field_def ipv4_defs[NUM_FIELDS_IPV4] = {
+	/* first input field - always one byte long. */
+	{
+		.type = RTE_ACL_FIELD_TYPE_BITMASK,
+		.size = sizeof(uint8_t),
+		.field_index = PROTO_FIELD_IPV4,
+		.input_index = PROTO_INPUT_IPV4,
+		.offset = sizeof(struct ether_hdr) +
+			offsetof(struct ipv4_hdr, next_proto_id),
+	},
+	/* next input field (IPv4 source address) - 4 consecutive bytes. */
+	{
+		/* rte_flow uses a bit mask for IPv4 addresses */
+		.type = RTE_ACL_FIELD_TYPE_BITMASK,
+		.size = sizeof(uint32_t),
+		.field_index = SRC_FIELD_IPV4,
+		.input_index = SRC_INPUT_IPV4,
+		.offset = sizeof(struct ether_hdr) +
+			offsetof(struct ipv4_hdr, src_addr),
+	},
+	/* next input field (IPv4 destination address) - 4 consecutive bytes. */
+	{
+		/* rte_flow uses a bit mask for IPv4 addresses */
+		.type = RTE_ACL_FIELD_TYPE_BITMASK,
+		.size = sizeof(uint32_t),
+		.field_index = DST_FIELD_IPV4,
+		.input_index = DST_INPUT_IPV4,
+		.offset = sizeof(struct ether_hdr) +
+			offsetof(struct ipv4_hdr, dst_addr),
+	},
+	/*
+	 * Next 2 fields (src & dst ports) form 4 consecutive bytes.
+	 * They share the same input index.
+	 */
+	{
+		/* rte_flow uses a bit mask for protocol ports */
+		.type = RTE_ACL_FIELD_TYPE_BITMASK,
+		.size = sizeof(uint16_t),
+		.field_index = SRCP_FIELD_IPV4,
+		.input_index = SRCP_DESTP_INPUT_IPV4,
+		.offset = sizeof(struct ether_hdr) +
+			sizeof(struct ipv4_hdr) +
+			offsetof(struct tcp_hdr, src_port),
+	},
+	{
+		/* rte_flow uses a bit mask for protocol ports */
+		.type = RTE_ACL_FIELD_TYPE_BITMASK,
+		.size = sizeof(uint16_t),
+		.field_index = DSTP_FIELD_IPV4,
+		.input_index = SRCP_DESTP_INPUT_IPV4,
+		.offset = sizeof(struct ether_hdr) +
+			sizeof(struct ipv4_hdr) +
+			offsetof(struct tcp_hdr, dst_port),
+	},
+};
+
+/* flow classify data */
+static struct rte_flow_classify *udp_flow_classify[MAX_NUM_CLASSIFY];
+static struct rte_flow_classify *tcp_flow_classify[MAX_NUM_CLASSIFY];
+static struct rte_flow_classify *sctp_flow_classify[MAX_NUM_CLASSIFY];
+
+static struct rte_flow_classify_5tuple_stats udp_ntuple_stats;
+static struct rte_flow_classify_stats udp_classify_stats = {
+		.available_space = BURST_SIZE,
+		.used_space = 0,
+		.stats = (void **)&udp_ntuple_stats
+};
+
+static struct rte_flow_classify_5tuple_stats tcp_ntuple_stats;
+static struct rte_flow_classify_stats tcp_classify_stats = {
+		.available_space = BURST_SIZE,
+		.used_space = 0,
+		.stats = (void **)&tcp_ntuple_stats
+};
+
+static struct rte_flow_classify_5tuple_stats sctp_ntuple_stats;
+static struct rte_flow_classify_stats sctp_classify_stats = {
+		.available_space = BURST_SIZE,
+		.used_space = 0,
+		.stats = (void **)&sctp_ntuple_stats
+};
+
+/* parameters for rte_flow_classify_validate and rte_flow_classify_create */
+
+/* first sample UDP pattern:
+ * "eth / ipv4 src spec 2.2.2.3 src mask 255.255.255.00 dst spec 2.2.2.7
+ *  dst mask 255.255.255.00 / udp src is 32 dst is 33 / end"
+ */
+static struct rte_flow_item_ipv4 ipv4_udp_spec_1 = {
+	{ 0, 0, 0, 0, 0, 0, 17, 0, IPv4(2, 2, 2, 3), IPv4(2, 2, 2, 7)}
+};
+static const struct rte_flow_item_ipv4 ipv4_mask_24 = {
+	.hdr = {
+		.next_proto_id = 0xff,
+		.src_addr = 0xffffff00,
+		.dst_addr = 0xffffff00,
+	},
+};
+static struct rte_flow_item_udp udp_spec_1 = {
+	{ 32, 33, 0, 0 }
+};
+
+static struct rte_flow_item  eth_item = { RTE_FLOW_ITEM_TYPE_ETH,
+	0, 0, 0 };
+static struct rte_flow_item  ipv4_udp_item_1 = { RTE_FLOW_ITEM_TYPE_IPV4,
+	&ipv4_udp_spec_1, 0, &ipv4_mask_24};
+static struct rte_flow_item  udp_item_1 = { RTE_FLOW_ITEM_TYPE_UDP,
+	&udp_spec_1, 0, &rte_flow_item_udp_mask};
+static struct rte_flow_item  end_item = { RTE_FLOW_ITEM_TYPE_END,
+	0, 0, 0 };
+static struct rte_flow_item  pattern_udp_1[4];
+
+/* second sample UDP pattern:
+ * "eth / ipv4 src is 9.9.9.3 dst is 9.9.9.7 / udp src is 32 dst is 33 / end"
+ */
+static struct rte_flow_item_ipv4 ipv4_udp_spec_2 = {
+	{ 0, 0, 0, 0, 0, 0, 17, 0, IPv4(9, 9, 9, 3), IPv4(9, 9, 9, 7)}
+};
+static struct rte_flow_item_udp udp_spec_2 = {
+	{ 32, 33, 0, 0 }
+};
+
+static struct rte_flow_item  ipv4_udp_item_2 = { RTE_FLOW_ITEM_TYPE_IPV4,
+	&ipv4_udp_spec_2, 0, &rte_flow_item_ipv4_mask};
+static struct rte_flow_item  udp_item_2 = { RTE_FLOW_ITEM_TYPE_UDP,
+	&udp_spec_2, 0, &rte_flow_item_udp_mask};
+static struct rte_flow_item  pattern_udp_2[4];
+
+/* first sample TCP pattern:
+ * "eth / ipv4 src spec 9.9.9.3 src mask 255.255.255.0 dst spec 9.9.9.7 dst
+ * mask 255.255.255.0/ tcp src is 32 dst is 33 / end"
+ */
+static struct rte_flow_item_ipv4 ipv4_tcp_spec_1 = {
+	{ 0, 0, 0, 0, 0, 0, 6, 0, IPv4(9, 9, 9, 3), IPv4(9, 9, 9, 7)}
+};
+static struct rte_flow_item_tcp tcp_spec_1 = {
+	{ 32, 33, 0, 0, 0, 0, 0, 0, 0 }
+};
+
+static struct rte_flow_item  ipv4_tcp_item_1 = { RTE_FLOW_ITEM_TYPE_IPV4,
+	&ipv4_tcp_spec_1, 0, &ipv4_mask_24};
+static struct rte_flow_item  tcp_item_1 = { RTE_FLOW_ITEM_TYPE_TCP,
+	&tcp_spec_1, 0, &rte_flow_item_tcp_mask};
+
+static struct rte_flow_item  pattern_tcp_1[4];
+
+/* second sample TCP pattern:
+ * "eth / ipv4 src is 9.9.8.3 dst is 9.9.8.7 / tcp src is 32 dst is 33 / end"
+ */
+static struct rte_flow_item_ipv4 ipv4_tcp_spec_2 = {
+	{ 0, 0, 0, 0, 0, 0, 6, 0, IPv4(9, 9, 8, 3), IPv4(9, 9, 8, 7)}
+};
+static struct rte_flow_item_tcp tcp_spec_2 = {
+	{ 32, 33, 0, 0, 0, 0, 0, 0, 0 }
+};
+
+static struct rte_flow_item  ipv4_tcp_item_2 = { RTE_FLOW_ITEM_TYPE_IPV4,
+	&ipv4_tcp_spec_2, 0, &rte_flow_item_ipv4_mask};
+static struct rte_flow_item  tcp_item_2 = { RTE_FLOW_ITEM_TYPE_TCP,
+	&tcp_spec_2, 0, &rte_flow_item_tcp_mask};
+
+static struct rte_flow_item  pattern_tcp_2[4];
+
+/* first sample SCTP pattern:
+ * "eth / ipv4 src is 6.7.8.9 dst is 2.3.4.5 / sctp src is 32 dst is 33 / end"
+ */
+static struct rte_flow_item_ipv4 ipv4_sctp_spec_1 = {
+	{ 0, 0, 0, 0, 0, 0, 132, 0, IPv4(6, 7, 8, 9), IPv4(2, 3, 4, 5)}
+};
+static struct rte_flow_item_sctp sctp_spec_1 = {
+	{ 32, 33, 0, 0 }
+};
+
+static struct rte_flow_item  ipv4_sctp_item_1 = { RTE_FLOW_ITEM_TYPE_IPV4,
+	&ipv4_sctp_spec_1, 0, &rte_flow_item_ipv4_mask};
+static struct rte_flow_item  sctp_item_1 = { RTE_FLOW_ITEM_TYPE_SCTP,
+	&sctp_spec_1, 0, &rte_flow_item_sctp_mask};
+
+static struct rte_flow_item  pattern_sctp_1[4];
+
+
+/* sample actions:
+ * "actions count / end"
+ */
+static struct rte_flow_action count_action = { RTE_FLOW_ACTION_TYPE_COUNT, 0};
+static struct rte_flow_action end_action = { RTE_FLOW_ACTION_TYPE_END, 0};
+static struct rte_flow_action actions[2];
+
+/* sample attributes */
+static struct rte_flow_attr attr;
+
+/* flow_classify.c:
+ * Based on DPDK skeleton forwarding example.
+ */
+
+/*
+ * Initializes a given port using global settings and with the RX buffers
+ * coming from the mbuf_pool passed as a parameter.
+ */
+static inline int
+port_init(uint8_t port, struct rte_mempool *mbuf_pool)
+{
+	struct rte_eth_conf port_conf = port_conf_default;
+	struct ether_addr addr;
+	const uint16_t rx_rings = 1, tx_rings = 1;
+	int retval;
+	uint16_t q;
+
+	if (port >= rte_eth_dev_count())
+		return -1;
+
+	/* Configure the Ethernet device. */
+	retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
+	if (retval != 0)
+		return retval;
+
+	/* Allocate and set up 1 RX queue per Ethernet port. */
+	for (q = 0; q < rx_rings; q++) {
+		retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
+				rte_eth_dev_socket_id(port), NULL, mbuf_pool);
+		if (retval < 0)
+			return retval;
+	}
+
+	/* Allocate and set up 1 TX queue per Ethernet port. */
+	for (q = 0; q < tx_rings; q++) {
+		retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
+				rte_eth_dev_socket_id(port), NULL);
+		if (retval < 0)
+			return retval;
+	}
+
+	/* Start the Ethernet port. */
+	retval = rte_eth_dev_start(port);
+	if (retval < 0)
+		return retval;
+
+	/* Display the port MAC address. */
+	rte_eth_macaddr_get(port, &addr);
+	printf("Port %u MAC: %02" PRIx8 " %02" PRIx8 " %02" PRIx8
+			   " %02" PRIx8 " %02" PRIx8 " %02" PRIx8 "\n",
+			port,
+			addr.addr_bytes[0], addr.addr_bytes[1],
+			addr.addr_bytes[2], addr.addr_bytes[3],
+			addr.addr_bytes[4], addr.addr_bytes[5]);
+
+	/* Enable RX in promiscuous mode for the Ethernet device. */
+	rte_eth_promiscuous_enable(port);
+
+	return 0;
+}
+
+/*
+ * The lcore main. This is the main thread that does the work, reading from
+ * an input port classifying the packets and writing to an output port.
+ */
+static __attribute__((noreturn)) void
+lcore_main(void)
+{
+	struct rte_flow_error error;
+	const uint8_t nb_ports = rte_eth_dev_count();
+	uint8_t port;
+	int ret;
+	int i;
+
+	/*
+	 * Check that the port is on the same NUMA node as the polling thread
+	 * for best performance.
+	 */
+	for (port = 0; port < nb_ports; port++)
+		if (rte_eth_dev_socket_id(port) > 0 &&
+				rte_eth_dev_socket_id(port) !=
+						(int)rte_socket_id())
+			printf("\n\n");
+			printf("WARNING: port %u is on remote NUMA node\n",
+			       port);
+			printf("to polling thread.\n");
+			printf("Performance will not be optimal.\n");
+
+	printf("\nCore %u forwarding packets. [Ctrl+C to quit]\n",
+			rte_lcore_id());
+
+	/* Run until the application is quit or killed. */
+	for (;;) {
+		/*
+		 * Receive packets on a port, classify them and forward them
+		 * on the paired port.
+		 * The mapping is 0 -> 1, 1 -> 0, 2 -> 3, 3 -> 2, etc.
+		 */
+		for (port = 0; port < nb_ports; port++) {
+
+			/* Get burst of RX packets, from first port of pair. */
+			struct rte_mbuf *bufs[BURST_SIZE];
+			const uint16_t nb_rx = rte_eth_rx_burst(port, 0,
+					bufs, BURST_SIZE);
+
+			if (unlikely(nb_rx == 0))
+				continue;
+
+			for (i = 0; i < MAX_NUM_CLASSIFY; i++) {
+				if (udp_flow_classify[i]) {
+					ret = rte_flow_classify_query(
+						table_acl,
+						udp_flow_classify[i],
+						bufs, nb_rx,
+						&udp_classify_stats, &error);
+					if (ret)
+						printf(
+						"udp flow classify[%d] query failed port=%u\n\n",
+						i, port);
+					else
+						printf(
+						"udp rule [%d] counter1=%lu used_space=%d\n\n",
+						i, udp_ntuple_stats.counter1,
+						udp_classify_stats.used_space);
+				}
+			}
+
+			for (i = 0; i < MAX_NUM_CLASSIFY; i++) {
+				if (tcp_flow_classify[i]) {
+					ret = rte_flow_classify_query(
+						table_acl,
+						tcp_flow_classify[i],
+						bufs, nb_rx,
+						&tcp_classify_stats, &error);
+					if (ret)
+						printf(
+						"tcp flow classify[%d] query failed port=%u\n\n",
+						i, port);
+					else
+						printf(
+						"tcp rule [%d] counter1=%lu used_space=%d\n\n",
+						i, tcp_ntuple_stats.counter1,
+						tcp_classify_stats.used_space);
+				}
+			}
+
+			for (i = 0; i < MAX_NUM_CLASSIFY; i++) {
+				if (sctp_flow_classify[i]) {
+					ret = rte_flow_classify_query(
+						table_acl,
+						sctp_flow_classify[i],
+						bufs, nb_rx,
+						&sctp_classify_stats, &error);
+					if (ret)
+						printf(
+						"sctp flow classify[%d] query failed port=%u\n\n",
+						i, port);
+					else
+						printf(
+						"sctp rule [%d] counter1=%lu used_space=%d\n\n",
+						i, sctp_ntuple_stats.counter1,
+						sctp_classify_stats.used_space);
+				}
+			}
+
+			/* Send burst of TX packets, to second port of pair. */
+			const uint16_t nb_tx = rte_eth_tx_burst(port ^ 1, 0,
+					bufs, nb_rx);
+
+			/* Free any unsent packets. */
+			if (unlikely(nb_tx < nb_rx)) {
+				uint16_t buf;
+
+				for (buf = nb_tx; buf < nb_rx; buf++)
+					rte_pktmbuf_free(bufs[buf]);
+			}
+		}
+	}
+}
+
+/*
+ * The main function, which does initialization and calls the per-lcore
+ * functions.
+ */
+int
+main(int argc, char *argv[])
+{
+	struct rte_mempool *mbuf_pool;
+	struct rte_flow_error error;
+	uint8_t nb_ports;
+	uint8_t portid;
+	int ret;
+	int udp_num_classify = 0;
+	int tcp_num_classify = 0;
+	int sctp_num_classify = 0;
+	int socket_id;
+	struct rte_table_acl_params table_acl_params;
+	uint32_t entry_size;
+
+	/* Initialize the Environment Abstraction Layer (EAL). */
+	ret = rte_eal_init(argc, argv);
+	if (ret < 0)
+		rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
+
+	argc -= ret;
+	argv += ret;
+
+	/* Check that there is an even number of ports to send/receive on. */
+	nb_ports = rte_eth_dev_count();
+	if (nb_ports < 2 || (nb_ports & 1))
+		rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n");
+
+	/* Creates a new mempool in memory to hold the mbufs. */
+	mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports,
+		MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+
+	if (mbuf_pool == NULL)
+		rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
+
+	/* Initialize all ports. */
+	for (portid = 0; portid < nb_ports; portid++)
+		if (port_init(portid, mbuf_pool) != 0)
+			rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu8 "\n",
+					portid);
+
+	if (rte_lcore_count() > 1)
+		printf("\nWARNING: Too many lcores enabled. Only 1 used.\n");
+
+	socket_id = rte_eth_dev_socket_id(0);
+
+	/* initialise ACL table params */
+	table_acl_params.n_rule_fields = RTE_DIM(ipv4_defs);
+	table_acl_params.name = "table_acl_ipv4_5tuple";
+	table_acl_params.n_rules = FLOW_CLASSIFY_MAX_RULE_NUM;
+	memcpy(table_acl_params.field_format, ipv4_defs, sizeof(ipv4_defs));
+	entry_size = RTE_ACL_RULE_SZ(RTE_DIM(ipv4_defs));
+
+	table_acl = rte_table_acl_ops.f_create(&table_acl_params, socket_id,
+						entry_size);
+	if (table_acl == NULL)
+		return -1;
+
+	/* set up parameters for rte_flow_classify_validate and
+	 * rte_flow_classify_create
+	 */
+
+	attr.ingress = 1;
+	attr.priority = 1;
+	pattern_udp_1[0] = eth_item;
+	pattern_udp_1[1] = ipv4_udp_item_1;
+	pattern_udp_1[2] = udp_item_1;
+	pattern_udp_1[3] = end_item;
+	actions[0] = count_action;
+	actions[1] = end_action;
+
+	ret = rte_flow_classify_validate(table_acl, &attr,
+			pattern_udp_1, actions, &error);
+	if (ret)
+		rte_exit(EXIT_FAILURE, "udp_1 flow classify validate failed\n");
+
+	udp_flow_classify[udp_num_classify] = rte_flow_classify_create(
+			table_acl, entry_size, &attr, pattern_udp_1, actions,
+			&error);
+	if (udp_flow_classify[udp_num_classify] == NULL)
+		rte_exit(EXIT_FAILURE, "udp_1 flow classify create failed\n");
+	udp_num_classify++;
+
+	attr.ingress = 1;
+	attr.priority = 2;
+	pattern_udp_2[0] = eth_item;
+	pattern_udp_2[1] = ipv4_udp_item_2;
+	pattern_udp_2[2] = udp_item_2;
+	pattern_udp_2[3] = end_item;
+	actions[0] = count_action;
+	actions[1] = end_action;
+
+	ret = rte_flow_classify_validate(table_acl, &attr, pattern_udp_2,
+			actions, &error);
+	if (ret)
+		rte_exit(EXIT_FAILURE, "udp_2 flow classify validate failed\n");
+
+	udp_flow_classify[udp_num_classify] = rte_flow_classify_create(
+			table_acl, entry_size, &attr, pattern_udp_2, actions,
+			&error);
+	if (udp_flow_classify[udp_num_classify] == NULL)
+		rte_exit(EXIT_FAILURE, "udp_2 flow classify create failed\n");
+	udp_num_classify++;
+
+	attr.ingress = 1;
+	attr.priority = 3;
+	pattern_tcp_1[0] = eth_item;
+	pattern_tcp_1[1] = ipv4_tcp_item_1;
+	pattern_tcp_1[2] = tcp_item_1;
+	pattern_tcp_1[3] = end_item;
+	actions[0] = count_action;
+	actions[1] = end_action;
+
+	ret = rte_flow_classify_validate(table_acl, &attr, pattern_tcp_1,
+			actions, &error);
+	if (ret)
+		rte_exit(EXIT_FAILURE, "tcp_1 flow classify validate failed\n");
+
+	tcp_flow_classify[tcp_num_classify] = rte_flow_classify_create(
+			table_acl, entry_size, &attr, pattern_tcp_1, actions,
+			&error);
+	if (tcp_flow_classify[tcp_num_classify] == NULL)
+		rte_exit(EXIT_FAILURE, "tcp_1 flow classify create failed\n");
+	tcp_num_classify++;
+
+	attr.ingress = 1;
+	attr.priority = 4;
+	pattern_tcp_2[0] = eth_item;
+	pattern_tcp_2[1] = ipv4_tcp_item_2;
+	pattern_tcp_2[2] = tcp_item_2;
+	pattern_tcp_2[3] = end_item;
+	actions[0] = count_action;
+	actions[1] = end_action;
+
+	ret = rte_flow_classify_validate(table_acl, &attr, pattern_tcp_2,
+			actions, &error);
+	if (ret)
+		rte_exit(EXIT_FAILURE, "tcp_2 flow classify validate failed\n");
+
+	tcp_flow_classify[tcp_num_classify] = rte_flow_classify_create(
+			table_acl, entry_size, &attr, pattern_tcp_2, actions,
+			&error);
+	if (tcp_flow_classify[tcp_num_classify] == NULL)
+		rte_exit(EXIT_FAILURE, "tcp_2 flow classify create failed\n");
+	tcp_num_classify++;
+
+	attr.ingress = 1;
+	attr.priority = 5;
+	pattern_sctp_1[0] = eth_item;
+	pattern_sctp_1[1] = ipv4_sctp_item_1;
+	pattern_sctp_1[2] = sctp_item_1;
+	pattern_sctp_1[3] = end_item;
+	actions[0] = count_action;
+	actions[1] = end_action;
+
+	ret = rte_flow_classify_validate(table_acl, &attr, pattern_sctp_1,
+			actions, &error);
+	if (ret)
+		rte_exit(EXIT_FAILURE,
+				"sctp_1 flow classify validate failed\n");
+
+	sctp_flow_classify[sctp_num_classify] = rte_flow_classify_create(
+		table_acl, entry_size, &attr, pattern_sctp_1, actions,
+		&error);
+	if (sctp_flow_classify[sctp_num_classify] == NULL)
+		rte_exit(EXIT_FAILURE, "sctp_1 flow classify create failed\n");
+	sctp_num_classify++;
+
+	ret = rte_flow_classify_destroy(table_acl, sctp_flow_classify[0],
+			&error);
+	if (ret)
+		rte_exit(EXIT_FAILURE,
+				"sctp_1 flow classify destroy failed\n");
+	else {
+		sctp_num_classify--;
+		sctp_flow_classify[0] = NULL;
+	}
+	/* Call lcore_main on the master core only. */
+	lcore_main();
+
+	return 0;
+}
-- 
1.9.1