Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

26 files changed, 2367 insertions, 0 deletions

diff --git a/src/spdk/dpdk/examples/multi_process/Makefile b/src/spdk/dpdk/examples/multi_process/Makefile
new file mode 100644
index 000000000..7f7e68d91
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/Makefile
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2010-2014 Intel Corporation
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+DIRS-$(CONFIG_RTE_EXEC_ENV_LINUX) += client_server_mp
+DIRS-$(CONFIG_RTE_EXEC_ENV_LINUX) += simple_mp
+DIRS-$(CONFIG_RTE_EXEC_ENV_LINUX) += symmetric_mp
+DIRS-$(CONFIG_RTE_EXEC_ENV_LINUX) += hotplug_mp
+
+include $(RTE_SDK)/mk/rte.extsubdir.mk
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/Makefile b/src/spdk/dpdk/examples/multi_process/client_server_mp/Makefile
new file mode 100644
index 000000000..fe7a8af60
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/Makefile
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2010-2014 Intel Corporation
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+DIRS-$(CONFIG_RTE_EXEC_ENV_LINUX) += mp_client
+DIRS-$(CONFIG_RTE_EXEC_ENV_LINUX) += mp_server
+
+include $(RTE_SDK)/mk/rte.extsubdir.mk
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_client/Makefile b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_client/Makefile
new file mode 100644
index 000000000..7c447feba
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_client/Makefile
@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2010-2014 Intel Corporation
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, can be overridden by command line or environment
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = mp_client
+
+# all source are stored in SRCS-y
+SRCS-y := client.c
+
+CFLAGS += $(WERROR_FLAGS) -O3
+CFLAGS += -I$(SRCDIR)/../shared
+CFLAGS += -DALLOW_EXPERIMENTAL_API
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_client/client.c b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_client/client.c
new file mode 100644
index 000000000..361d90b54
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_client/client.c
@@ -0,0 +1,271 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2016 Intel Corporation
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <sys/queue.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <string.h>
+
+#include <rte_common.h>
+#include <rte_malloc.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_atomic.h>
+#include <rte_branch_prediction.h>
+#include <rte_log.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_ring.h>
+#include <rte_launch.h>
+#include <rte_debug.h>
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_interrupts.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_string_fns.h>
+
+#include "common.h"
+
+/* Number of packets to attempt to read from queue */
+#define PKT_READ_SIZE  ((uint16_t)32)
+
+/* our client id number - tells us which rx queue to read, and NIC TX
+ * queue to write to. */
+static uint8_t client_id = 0;
+
+#define MBQ_CAPACITY 32
+
+/* maps input ports to output ports for packets */
+static uint16_t output_ports[RTE_MAX_ETHPORTS];
+
+/* buffers up a set of packet that are ready to send */
+struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
+
+/* shared data from server. We update statistics here */
+static volatile struct tx_stats *tx_stats;
+
+
+/*
+ * print a usage message
+ */
+static void
+usage(const char *progname)
+{
+	printf("Usage: %s [EAL args] -- -n <client_id>\n\n", progname);
+}
+
+/*
+ * Convert the client id number from a string to an int.
+ */
+static int
+parse_client_num(const char *client)
+{
+	char *end = NULL;
+	unsigned long temp;
+
+	if (client == NULL || *client == '\0')
+		return -1;
+
+	temp = strtoul(client, &end, 10);
+	if (end == NULL || *end != '\0')
+		return -1;
+
+	client_id = (uint8_t)temp;
+	return 0;
+}
+
+/*
+ * Parse the application arguments to the client app.
+ */
+static int
+parse_app_args(int argc, char *argv[])
+{
+	int option_index, opt;
+	char **argvopt = argv;
+	const char *progname = NULL;
+	static struct option lgopts[] = { /* no long options */
+		{NULL, 0, 0, 0 }
+	};
+	progname = argv[0];
+
+	while ((opt = getopt_long(argc, argvopt, "n:", lgopts,
+		&option_index)) != EOF){
+		switch (opt){
+			case 'n':
+				if (parse_client_num(optarg) != 0){
+					usage(progname);
+					return -1;
+				}
+				break;
+			default:
+				usage(progname);
+				return -1;
+		}
+	}
+	return 0;
+}
+
+/*
+ * Tx buffer error callback
+ */
+static void
+flush_tx_error_callback(struct rte_mbuf **unsent, uint16_t count,
+		void *userdata) {
+	int i;
+	uint16_t port_id = (uintptr_t)userdata;
+
+	tx_stats->tx_drop[port_id] += count;
+
+	/* free the mbufs which failed from transmit */
+	for (i = 0; i < count; i++)
+		rte_pktmbuf_free(unsent[i]);
+
+}
+
+static void
+configure_tx_buffer(uint16_t port_id, uint16_t size)
+{
+	int ret;
+
+	/* Initialize TX buffers */
+	tx_buffer[port_id] = rte_zmalloc_socket("tx_buffer",
+			RTE_ETH_TX_BUFFER_SIZE(size), 0,
+			rte_eth_dev_socket_id(port_id));
+	if (tx_buffer[port_id] == NULL)
+		rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
+			 port_id);
+
+	rte_eth_tx_buffer_init(tx_buffer[port_id], size);
+
+	ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[port_id],
+			flush_tx_error_callback, (void *)(intptr_t)port_id);
+	if (ret < 0)
+		rte_exit(EXIT_FAILURE,
+		"Cannot set error callback for tx buffer on port %u\n",
+			 port_id);
+}
+
+/*
+ * set up output ports so that all traffic on port gets sent out
+ * its paired port. Index using actual port numbers since that is
+ * what comes in the mbuf structure.
+ */
+static void
+configure_output_ports(const struct port_info *ports)
+{
+	int i;
+	if (ports->num_ports > RTE_MAX_ETHPORTS)
+		rte_exit(EXIT_FAILURE, "Too many ethernet ports. RTE_MAX_ETHPORTS = %u\n",
+				(unsigned)RTE_MAX_ETHPORTS);
+	for (i = 0; i < ports->num_ports - 1; i+=2){
+		uint16_t p1 = ports->id[i];
+		uint16_t p2 = ports->id[i+1];
+		output_ports[p1] = p2;
+		output_ports[p2] = p1;
+
+		configure_tx_buffer(p1, MBQ_CAPACITY);
+		configure_tx_buffer(p2, MBQ_CAPACITY);
+
+	}
+}
+
+/*
+ * This function performs routing of packets
+ * Just sends each input packet out an output port based solely on the input
+ * port it arrived on.
+ */
+static void
+handle_packet(struct rte_mbuf *buf)
+{
+	int sent;
+	const uint16_t in_port = buf->port;
+	const uint16_t out_port = output_ports[in_port];
+	struct rte_eth_dev_tx_buffer *buffer = tx_buffer[out_port];
+
+	sent = rte_eth_tx_buffer(out_port, client_id, buffer, buf);
+	if (sent)
+		tx_stats->tx[out_port] += sent;
+
+}
+
+/*
+ * Application main function - loops through
+ * receiving and processing packets. Never returns
+ */
+int
+main(int argc, char *argv[])
+{
+	const struct rte_memzone *mz;
+	struct rte_ring *rx_ring;
+	struct rte_mempool *mp;
+	struct port_info *ports;
+	int need_flush = 0; /* indicates whether we have unsent packets */
+	int retval;
+	void *pkts[PKT_READ_SIZE];
+	uint16_t sent;
+
+	if ((retval = rte_eal_init(argc, argv)) < 0)
+		return -1;
+	argc -= retval;
+	argv += retval;
+
+	if (parse_app_args(argc, argv) < 0)
+		rte_exit(EXIT_FAILURE, "Invalid command-line arguments\n");
+
+	if (rte_eth_dev_count_avail() == 0)
+		rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
+
+	rx_ring = rte_ring_lookup(get_rx_queue_name(client_id));
+	if (rx_ring == NULL)
+		rte_exit(EXIT_FAILURE, "Cannot get RX ring - is server process running?\n");
+
+	mp = rte_mempool_lookup(PKTMBUF_POOL_NAME);
+	if (mp == NULL)
+		rte_exit(EXIT_FAILURE, "Cannot get mempool for mbufs\n");
+
+	mz = rte_memzone_lookup(MZ_PORT_INFO);
+	if (mz == NULL)
+		rte_exit(EXIT_FAILURE, "Cannot get port info structure\n");
+	ports = mz->addr;
+	tx_stats = &(ports->tx_stats[client_id]);
+
+	configure_output_ports(ports);
+
+	RTE_LOG(INFO, APP, "Finished Process Init.\n");
+
+	printf("\nClient process %d handling packets\n", client_id);
+	printf("[Press Ctrl-C to quit ...]\n");
+
+	for (;;) {
+		uint16_t i, rx_pkts;
+
+		rx_pkts = rte_ring_dequeue_burst(rx_ring, pkts,
+				PKT_READ_SIZE, NULL);
+
+		if (rx_pkts == 0 && need_flush) {
+			for (i = 0; i < ports->num_ports; i++) {
+				uint16_t port = ports->id[i];
+
+				sent = rte_eth_tx_buffer_flush(port,
+							       client_id,
+							       tx_buffer[port]);
+				tx_stats->tx[port] += sent;
+			}
+			need_flush = 0;
+			continue;
+		}
+
+		for (i = 0; i < rx_pkts; i++)
+			handle_packet(pkts[i]);
+
+		need_flush = 1;
+	}
+}
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_client/meson.build b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_client/meson.build
new file mode 100644
index 000000000..69c3d3bfb
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_client/meson.build
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2019 Mellanox Technologies, Ltd
+
+# meson file, for building this example as part of a main DPDK build.
+#
+# To build this example as a standalone application with an already-installed
+# DPDK instance, use 'make'
+
+includes += include_directories('../shared')
+
+allow_experimental_apis = true
+sources = files(
+	'client.c'
+)
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/Makefile b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/Makefile
new file mode 100644
index 000000000..50ebf1d7d
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/Makefile
@@ -0,0 +1,34 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2010-2014 Intel Corporation
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+ifneq ($(CONFIG_RTE_EXEC_ENV_LINUX),y)
+$(error This application can only operate in a linux environment, \
+please change the definition of the RTE_TARGET environment variable)
+endif
+
+# binary name
+APP = mp_server
+
+# all source are stored in SRCS-y
+SRCS-y := main.c init.c args.c
+
+INC := $(sort $(wildcard *.h))
+
+CFLAGS += -DALLOW_EXPERIMENTAL_API
+CFLAGS += $(WERROR_FLAGS) -O3
+CFLAGS += -I$(SRCDIR)/../shared
+
+# for newer gcc, e.g. 4.4, no-strict-aliasing may not be necessary
+# and so the next line can be removed in those cases.
+EXTRA_CFLAGS += -fno-strict-aliasing
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/args.c b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/args.c
new file mode 100644
index 000000000..3c2ca266b
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/args.c
@@ -0,0 +1,147 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <getopt.h>
+#include <stdarg.h>
+#include <errno.h>
+
+#include <rte_memory.h>
+#include <rte_ethdev.h>
+#include <rte_string_fns.h>
+
+#include "common.h"
+#include "args.h"
+#include "init.h"
+
+/* global var for number of clients - extern in header */
+uint8_t num_clients;
+
+static const char *progname;
+
+/**
+ * Prints out usage information to stdout
+ */
+static void
+usage(void)
+{
+	printf(
+	    "%s [EAL options] -- -p PORTMASK -n NUM_CLIENTS [-s NUM_SOCKETS]\n"
+	    " -p PORTMASK: hexadecimal bitmask of ports to use\n"
+	    " -n NUM_CLIENTS: number of client processes to use\n"
+	    , progname);
+}
+
+/**
+ * The ports to be used by the application are passed in
+ * the form of a bitmask. This function parses the bitmask
+ * and places the port numbers to be used into the port[]
+ * array variable
+ */
+static int
+parse_portmask(const char *portmask)
+{
+	char *end = NULL;
+	unsigned long long pm;
+	uint16_t id;
+
+	if (portmask == NULL || *portmask == '\0')
+		return -1;
+
+	/* convert parameter to a number and verify */
+	errno = 0;
+	pm = strtoull(portmask, &end, 16);
+	if (errno != 0 || end == NULL || *end != '\0')
+		return -1;
+
+	RTE_ETH_FOREACH_DEV(id) {
+		unsigned long msk = 1u << id;
+
+		if ((pm & msk) == 0)
+			continue;
+
+		pm &= ~msk;
+		ports->id[ports->num_ports++] = id;
+	}
+
+	if (pm != 0) {
+		printf("WARNING: leftover ports in mask %#llx - ignoring\n",
+		       pm);
+	}
+
+	return 0;
+}
+
+/**
+ * Take the number of clients parameter passed to the app
+ * and convert to a number to store in the num_clients variable
+ */
+static int
+parse_num_clients(const char *clients)
+{
+	char *end = NULL;
+	unsigned long temp;
+
+	if (clients == NULL || *clients == '\0')
+		return -1;
+
+	temp = strtoul(clients, &end, 10);
+	if (end == NULL || *end != '\0' || temp == 0)
+		return -1;
+
+	num_clients = (uint8_t)temp;
+	return 0;
+}
+
+/**
+ * The application specific arguments follow the DPDK-specific
+ * arguments which are stripped by the DPDK init. This function
+ * processes these application arguments, printing usage info
+ * on error.
+ */
+int
+parse_app_args(int argc, char *argv[])
+{
+	int option_index, opt;
+	char **argvopt = argv;
+	static struct option lgopts[] = { /* no long options */
+		{NULL, 0, 0, 0 }
+	};
+	progname = argv[0];
+
+	while ((opt = getopt_long(argc, argvopt, "n:p:", lgopts,
+		&option_index)) != EOF){
+		switch (opt){
+			case 'p':
+				if (parse_portmask(optarg) != 0) {
+					usage();
+					return -1;
+				}
+				break;
+			case 'n':
+				if (parse_num_clients(optarg) != 0){
+					usage();
+					return -1;
+				}
+				break;
+			default:
+				printf("ERROR: Unknown option '%c'\n", opt);
+				usage();
+				return -1;
+		}
+	}
+
+	if (ports->num_ports == 0 || num_clients == 0){
+		usage();
+		return -1;
+	}
+
+	if (ports->num_ports % 2 != 0){
+		printf("ERROR: application requires an even number of ports to use\n");
+		return -1;
+	}
+	return 0;
+}
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/args.h b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/args.h
new file mode 100644
index 000000000..52c8cc86e
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/args.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#ifndef _ARGS_H_
+#define _ARGS_H_
+
+int parse_app_args(int argc, char *argv[]);
+
+#endif /* ifndef _ARGS_H_ */
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/init.c b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/init.c
new file mode 100644
index 000000000..c2ec07ac6
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/init.c
@@ -0,0 +1,292 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/queue.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <inttypes.h>
+
+#include <rte_common.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_byteorder.h>
+#include <rte_atomic.h>
+#include <rte_launch.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_debug.h>
+#include <rte_ring.h>
+#include <rte_log.h>
+#include <rte_mempool.h>
+#include <rte_memcpy.h>
+#include <rte_mbuf.h>
+#include <rte_interrupts.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_malloc.h>
+#include <rte_string_fns.h>
+#include <rte_cycles.h>
+
+#include "common.h"
+#include "args.h"
+#include "init.h"
+
+#define MBUF_CACHE_SIZE 512
+
+#define RTE_MP_RX_DESC_DEFAULT 1024
+#define RTE_MP_TX_DESC_DEFAULT 1024
+#define CLIENT_QUEUE_RINGSIZE 128
+
+#define NO_FLAGS 0
+
+/* The mbuf pool for packet rx */
+struct rte_mempool *pktmbuf_pool;
+
+/* array of info/queues for clients */
+struct client *clients = NULL;
+
+/* the port details */
+struct port_info *ports;
+
+/**
+ * Initialise the mbuf pool for packet reception for the NIC, and any other
+ * buffer pools needed by the app - currently none.
+ */
+static int
+init_mbuf_pools(void)
+{
+	const unsigned int num_mbufs_server =
+		RTE_MP_RX_DESC_DEFAULT * ports->num_ports;
+	const unsigned int num_mbufs_client =
+		num_clients * (CLIENT_QUEUE_RINGSIZE +
+			       RTE_MP_TX_DESC_DEFAULT * ports->num_ports);
+	const unsigned int num_mbufs_mp_cache =
+		(num_clients + 1) * MBUF_CACHE_SIZE;
+	const unsigned int num_mbufs =
+		num_mbufs_server + num_mbufs_client + num_mbufs_mp_cache;
+
+	/* don't pass single-producer/single-consumer flags to mbuf create as it
+	 * seems faster to use a cache instead */
+	printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
+			PKTMBUF_POOL_NAME, num_mbufs);
+	pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs,
+		MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+
+	return pktmbuf_pool == NULL; /* 0  on success */
+}
+
+/**
+ * Initialise an individual port:
+ * - configure number of rx and tx rings
+ * - set up each rx ring, to pull from the main mbuf pool
+ * - set up each tx ring
+ * - start the port and report its status to stdout
+ */
+static int
+init_port(uint16_t port_num)
+{
+	/* for port configuration all features are off by default */
+	const struct rte_eth_conf port_conf = {
+		.rxmode = {
+			.mq_mode = ETH_MQ_RX_RSS
+		}
+	};
+	const uint16_t rx_rings = 1, tx_rings = num_clients;
+	uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
+	uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
+
+	uint16_t q;
+	int retval;
+
+	printf("Port %u init ... ", port_num);
+	fflush(stdout);
+
+	/* Standard DPDK port initialisation - config port, then set up
+	 * rx and tx rings */
+	if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
+		&port_conf)) != 0)
+		return retval;
+
+	retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size,
+			&tx_ring_size);
+	if (retval != 0)
+		return retval;
+
+	for (q = 0; q < rx_rings; q++) {
+		retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
+				rte_eth_dev_socket_id(port_num),
+				NULL, pktmbuf_pool);
+		if (retval < 0) return retval;
+	}
+
+	for ( q = 0; q < tx_rings; q ++ ) {
+		retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
+				rte_eth_dev_socket_id(port_num),
+				NULL);
+		if (retval < 0) return retval;
+	}
+
+	retval = rte_eth_promiscuous_enable(port_num);
+	if (retval < 0)
+		return retval;
+
+	retval  = rte_eth_dev_start(port_num);
+	if (retval < 0) return retval;
+
+	printf( "done: \n");
+
+	return 0;
+}
+
+/**
+ * Set up the DPDK rings which will be used to pass packets, via
+ * pointers, between the multi-process server and client processes.
+ * Each client needs one RX queue.
+ */
+static int
+init_shm_rings(void)
+{
+	unsigned i;
+	unsigned socket_id;
+	const char * q_name;
+	const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;
+
+	clients = rte_malloc("client details",
+		sizeof(*clients) * num_clients, 0);
+	if (clients == NULL)
+		rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");
+
+	for (i = 0; i < num_clients; i++) {
+		/* Create an RX queue for each client */
+		socket_id = rte_socket_id();
+		q_name = get_rx_queue_name(i);
+		clients[i].rx_q = rte_ring_create(q_name,
+				ringsize, socket_id,
+				RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
+		if (clients[i].rx_q == NULL)
+			rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
+	}
+	return 0;
+}
+
+/* Check the link status of all ports in up to 9s, and print them finally */
+static void
+check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
+{
+#define CHECK_INTERVAL 100 /* 100ms */
+#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
+	uint16_t portid;
+	uint8_t count, all_ports_up, print_flag = 0;
+	struct rte_eth_link link;
+	int ret;
+
+	printf("\nChecking link status");
+	fflush(stdout);
+	for (count = 0; count <= MAX_CHECK_TIME; count++) {
+		all_ports_up = 1;
+		for (portid = 0; portid < port_num; portid++) {
+			if ((port_mask & (1 << ports->id[portid])) == 0)
+				continue;
+			memset(&link, 0, sizeof(link));
+			ret = rte_eth_link_get_nowait(ports->id[portid], &link);
+			if (ret < 0) {
+				all_ports_up = 0;
+				if (print_flag == 1)
+					printf("Port %u link get failed: %s\n",
+						portid, rte_strerror(-ret));
+				continue;
+			}
+			/* print link status if flag set */
+			if (print_flag == 1) {
+				if (link.link_status)
+					printf("Port %d Link Up - speed %u "
+						"Mbps - %s\n", ports->id[portid],
+						(unsigned)link.link_speed,
+				(link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
+					("full-duplex") : ("half-duplex"));
+				else
+					printf("Port %d Link Down\n",
+						(uint8_t)ports->id[portid]);
+				continue;
+			}
+			/* clear all_ports_up flag if any link down */
+			if (link.link_status == ETH_LINK_DOWN) {
+				all_ports_up = 0;
+				break;
+			}
+		}
+		/* after finally printing all link status, get out */
+		if (print_flag == 1)
+			break;
+
+		if (all_ports_up == 0) {
+			printf(".");
+			fflush(stdout);
+			rte_delay_ms(CHECK_INTERVAL);
+		}
+
+		/* set the print_flag if all ports up or timeout */
+		if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
+			print_flag = 1;
+			printf("done\n");
+		}
+	}
+}
+
+/**
+ * Main init function for the multi-process server app,
+ * calls subfunctions to do each stage of the initialisation.
+ */
+int
+init(int argc, char *argv[])
+{
+	int retval;
+	const struct rte_memzone *mz;
+	uint16_t i;
+
+	/* init EAL, parsing EAL args */
+	retval = rte_eal_init(argc, argv);
+	if (retval < 0)
+		return -1;
+	argc -= retval;
+	argv += retval;
+
+	/* set up array for port data */
+	mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
+				rte_socket_id(), NO_FLAGS);
+	if (mz == NULL)
+		rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
+	memset(mz->addr, 0, sizeof(*ports));
+	ports = mz->addr;
+
+	/* parse additional, application arguments */
+	retval = parse_app_args(argc, argv);
+	if (retval != 0)
+		return -1;
+
+	/* initialise mbuf pools */
+	retval = init_mbuf_pools();
+	if (retval != 0)
+		rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
+
+	/* now initialise the ports we will use */
+	for (i = 0; i < ports->num_ports; i++) {
+		retval = init_port(ports->id[i]);
+		if (retval != 0)
+			rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
+					(unsigned)i);
+	}
+
+	check_all_ports_link_status(ports->num_ports, (~0x0));
+
+	/* initialise the client queues/rings for inter-eu comms */
+	init_shm_rings();
+
+	return 0;
+}
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/init.h b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/init.h
new file mode 100644
index 000000000..de5049c02
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/init.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#ifndef _INIT_H_
+#define _INIT_H_
+
+/*
+ * #include <rte_ring.h>
+ * #include "args.h"
+ */
+
+/*
+ * Define a client structure with all needed info, including
+ * stats from the clients.
+ */
+struct client {
+	struct rte_ring *rx_q;
+	unsigned client_id;
+	/* these stats hold how many packets the client will actually receive,
+	 * and how many packets were dropped because the client's queue was full.
+	 * The port-info stats, in contrast, record how many packets were received
+	 * or transmitted on an actual NIC port.
+	 */
+	struct {
+		volatile uint64_t rx;
+		volatile uint64_t rx_drop;
+	} stats;
+};
+
+extern struct client *clients;
+
+/* the shared port information: port numbers, rx and tx stats etc. */
+extern struct port_info *ports;
+
+extern struct rte_mempool *pktmbuf_pool;
+extern uint8_t num_clients;
+extern unsigned num_sockets;
+extern struct port_info *ports;
+
+int init(int argc, char *argv[]);
+
+#endif /* ifndef _INIT_H_ */
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/main.c b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/main.c
new file mode 100644
index 000000000..280dab867
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/main.c
@@ -0,0 +1,305 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <inttypes.h>
+#include <sys/queue.h>
+#include <errno.h>
+#include <signal.h>
+
+#include <rte_common.h>
+#include <rte_memory.h>
+#include <rte_eal.h>
+#include <rte_launch.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_atomic.h>
+#include <rte_ring.h>
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_mempool.h>
+#include <rte_memcpy.h>
+#include <rte_mbuf.h>
+#include <rte_ether.h>
+#include <rte_interrupts.h>
+#include <rte_ethdev.h>
+#include <rte_byteorder.h>
+#include <rte_malloc.h>
+#include <rte_string_fns.h>
+
+#include "common.h"
+#include "args.h"
+#include "init.h"
+
+/*
+ * When doing reads from the NIC or the client queues,
+ * use this batch size
+ */
+#define PACKET_READ_SIZE 32
+
+/*
+ * Local buffers to put packets in, used to send packets in bursts to the
+ * clients
+ */
+struct client_rx_buf {
+	struct rte_mbuf *buffer[PACKET_READ_SIZE];
+	uint16_t count;
+};
+
+/* One buffer per client rx queue - dynamically allocate array */
+static struct client_rx_buf *cl_rx_buf;
+
+static const char *
+get_printable_mac_addr(uint16_t port)
+{
+	static const char err_address[] = "00:00:00:00:00:00";
+	static char addresses[RTE_MAX_ETHPORTS][sizeof(err_address)];
+	int ret;
+
+	if (unlikely(port >= RTE_MAX_ETHPORTS))
+		return err_address;
+	if (unlikely(addresses[port][0]=='\0')){
+		struct rte_ether_addr mac;
+		ret = rte_eth_macaddr_get(port, &mac);
+		if (ret != 0) {
+			printf("Failed to get MAC address (port %u): %s\n",
+			       port, rte_strerror(-ret));
+			return err_address;
+		}
+		snprintf(addresses[port], sizeof(addresses[port]),
+				"%02x:%02x:%02x:%02x:%02x:%02x\n",
+				mac.addr_bytes[0], mac.addr_bytes[1], mac.addr_bytes[2],
+				mac.addr_bytes[3], mac.addr_bytes[4], mac.addr_bytes[5]);
+	}
+	return addresses[port];
+}
+
+/*
+ * This function displays the recorded statistics for each port
+ * and for each client. It uses ANSI terminal codes to clear
+ * screen when called. It is called from a single non-master
+ * thread in the server process, when the process is run with more
+ * than one lcore enabled.
+ */
+static void
+do_stats_display(void)
+{
+	unsigned i, j;
+	const char clr[] = { 27, '[', '2', 'J', '\0' };
+	const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
+	uint64_t port_tx[RTE_MAX_ETHPORTS], port_tx_drop[RTE_MAX_ETHPORTS];
+	uint64_t client_tx[MAX_CLIENTS], client_tx_drop[MAX_CLIENTS];
+
+	/* to get TX stats, we need to do some summing calculations */
+	memset(port_tx, 0, sizeof(port_tx));
+	memset(port_tx_drop, 0, sizeof(port_tx_drop));
+	memset(client_tx, 0, sizeof(client_tx));
+	memset(client_tx_drop, 0, sizeof(client_tx_drop));
+
+	for (i = 0; i < num_clients; i++){
+		const volatile struct tx_stats *tx = &ports->tx_stats[i];
+		for (j = 0; j < ports->num_ports; j++){
+			/* assign to local variables here, save re-reading volatile vars */
+			const uint64_t tx_val = tx->tx[ports->id[j]];
+			const uint64_t drop_val = tx->tx_drop[ports->id[j]];
+			port_tx[j] += tx_val;
+			port_tx_drop[j] += drop_val;
+			client_tx[i] += tx_val;
+			client_tx_drop[i] += drop_val;
+		}
+	}
+
+	/* Clear screen and move to top left */
+	printf("%s%s", clr, topLeft);
+
+	printf("PORTS\n");
+	printf("-----\n");
+	for (i = 0; i < ports->num_ports; i++)
+		printf("Port %u: '%s'\t", (unsigned)ports->id[i],
+				get_printable_mac_addr(ports->id[i]));
+	printf("\n\n");
+	for (i = 0; i < ports->num_ports; i++){
+		printf("Port %u - rx: %9"PRIu64"\t"
+				"tx: %9"PRIu64"\n",
+				(unsigned)ports->id[i], ports->rx_stats.rx[i],
+				port_tx[i]);
+	}
+
+	printf("\nCLIENTS\n");
+	printf("-------\n");
+	for (i = 0; i < num_clients; i++){
+		const unsigned long long rx = clients[i].stats.rx;
+		const unsigned long long rx_drop = clients[i].stats.rx_drop;
+		printf("Client %2u - rx: %9llu, rx_drop: %9llu\n"
+				"            tx: %9"PRIu64", tx_drop: %9"PRIu64"\n",
+				i, rx, rx_drop, client_tx[i], client_tx_drop[i]);
+	}
+
+	printf("\n");
+}
+
+/*
+ * The function called from each non-master lcore used by the process.
+ * The test_and_set function is used to randomly pick a single lcore on which
+ * the code to display the statistics will run. Otherwise, the code just
+ * repeatedly sleeps.
+ */
+static int
+sleep_lcore(__rte_unused void *dummy)
+{
+	/* Used to pick a display thread - static, so zero-initialised */
+	static rte_atomic32_t display_stats;
+
+	/* Only one core should display stats */
+	if (rte_atomic32_test_and_set(&display_stats)) {
+		const unsigned sleeptime = 1;
+		printf("Core %u displaying statistics\n", rte_lcore_id());
+
+		/* Longer initial pause so above printf is seen */
+		sleep(sleeptime * 3);
+
+		/* Loop forever: sleep always returns 0 or <= param */
+		while (sleep(sleeptime) <= sleeptime)
+			do_stats_display();
+	}
+	return 0;
+}
+
+/*
+ * Function to set all the client statistic values to zero.
+ * Called at program startup.
+ */
+static void
+clear_stats(void)
+{
+	unsigned i;
+
+	for (i = 0; i < num_clients; i++)
+		clients[i].stats.rx = clients[i].stats.rx_drop = 0;
+}
+
+/*
+ * send a burst of traffic to a client, assuming there are packets
+ * available to be sent to this client
+ */
+static void
+flush_rx_queue(uint16_t client)
+{
+	uint16_t j;
+	struct client *cl;
+
+	if (cl_rx_buf[client].count == 0)
+		return;
+
+	cl = &clients[client];
+	if (rte_ring_enqueue_bulk(cl->rx_q, (void **)cl_rx_buf[client].buffer,
+			cl_rx_buf[client].count, NULL) == 0){
+		for (j = 0; j < cl_rx_buf[client].count; j++)
+			rte_pktmbuf_free(cl_rx_buf[client].buffer[j]);
+		cl->stats.rx_drop += cl_rx_buf[client].count;
+	}
+	else
+		cl->stats.rx += cl_rx_buf[client].count;
+
+	cl_rx_buf[client].count = 0;
+}
+
+/*
+ * marks a packet down to be sent to a particular client process
+ */
+static inline void
+enqueue_rx_packet(uint8_t client, struct rte_mbuf *buf)
+{
+	cl_rx_buf[client].buffer[cl_rx_buf[client].count++] = buf;
+}
+
+/*
+ * This function takes a group of packets and routes them
+ * individually to the client process. Very simply round-robins the packets
+ * without checking any of the packet contents.
+ */
+static void
+process_packets(uint32_t port_num __rte_unused,
+		struct rte_mbuf *pkts[], uint16_t rx_count)
+{
+	uint16_t i;
+	uint8_t client = 0;
+
+	for (i = 0; i < rx_count; i++) {
+		enqueue_rx_packet(client, pkts[i]);
+
+		if (++client == num_clients)
+			client = 0;
+	}
+
+	for (i = 0; i < num_clients; i++)
+		flush_rx_queue(i);
+}
+
+/*
+ * Function called by the master lcore of the DPDK process.
+ */
+static void
+do_packet_forwarding(void)
+{
+	unsigned port_num = 0; /* indexes the port[] array */
+
+	for (;;) {
+		struct rte_mbuf *buf[PACKET_READ_SIZE];
+		uint16_t rx_count;
+
+		/* read a port */
+		rx_count = rte_eth_rx_burst(ports->id[port_num], 0, \
+				buf, PACKET_READ_SIZE);
+		ports->rx_stats.rx[port_num] += rx_count;
+
+		/* Now process the NIC packets read */
+		if (likely(rx_count > 0))
+			process_packets(port_num, buf, rx_count);
+
+		/* move to next port */
+		if (++port_num == ports->num_ports)
+			port_num = 0;
+	}
+}
+
+static void
+signal_handler(int signal)
+{
+	uint16_t port_id;
+
+	if (signal == SIGINT)
+		RTE_ETH_FOREACH_DEV(port_id) {
+			rte_eth_dev_stop(port_id);
+			rte_eth_dev_close(port_id);
+		}
+	exit(0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	signal(SIGINT, signal_handler);
+	/* initialise the system */
+	if (init(argc, argv) < 0 )
+		return -1;
+	RTE_LOG(INFO, APP, "Finished Process Init.\n");
+
+	cl_rx_buf = calloc(num_clients, sizeof(cl_rx_buf[0]));
+
+	/* clear statistics */
+	clear_stats();
+
+	/* put all other cores to sleep bar master */
+	rte_eal_mp_remote_launch(sleep_lcore, NULL, SKIP_MASTER);
+
+	do_packet_forwarding();
+	return 0;
+}
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/meson.build b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/meson.build
new file mode 100644
index 000000000..0ef6424f4
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/mp_server/meson.build
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2019 Mellanox Technologies, Ltd
+
+# meson file, for building this example as part of a main DPDK build.
+#
+# To build this example as a standalone application with an already-installed
+# DPDK instance, use 'make'
+
+includes += include_directories('../shared')
+
+allow_experimental_apis = true
+sources = files(
+	'args.c', 'init.c', 'main.c'
+)
diff --git a/src/spdk/dpdk/examples/multi_process/client_server_mp/shared/common.h b/src/spdk/dpdk/examples/multi_process/client_server_mp/shared/common.h
new file mode 100644
index 000000000..6dd43fcac
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/client_server_mp/shared/common.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#ifndef _COMMON_H_
+#define _COMMON_H_
+
+#define MAX_CLIENTS             16
+
+/*
+ * Shared port info, including statistics information for display by server.
+ * Structure will be put in a memzone.
+ * - All port id values share one cache line as this data will be read-only
+ * during operation.
+ * - All rx statistic values share cache lines, as this data is written only
+ * by the server process. (rare reads by stats display)
+ * - The tx statistics have values for all ports per cache line, but the stats
+ * themselves are written by the clients, so we have a distinct set, on different
+ * cache lines for each client to use.
+ */
+struct rx_stats{
+	uint64_t rx[RTE_MAX_ETHPORTS];
+} __rte_cache_aligned;
+
+struct tx_stats{
+	uint64_t tx[RTE_MAX_ETHPORTS];
+	uint64_t tx_drop[RTE_MAX_ETHPORTS];
+} __rte_cache_aligned;
+
+struct port_info {
+	uint16_t num_ports;
+	uint16_t id[RTE_MAX_ETHPORTS];
+	volatile struct rx_stats rx_stats;
+	volatile struct tx_stats tx_stats[MAX_CLIENTS];
+};
+
+/* define common names for structures shared between server and client */
+#define MP_CLIENT_RXQ_NAME "MProc_Client_%u_RX"
+#define PKTMBUF_POOL_NAME "MProc_pktmbuf_pool"
+#define MZ_PORT_INFO "MProc_port_info"
+
+/*
+ * Given the rx queue name template above, get the queue name
+ */
+static inline const char *
+get_rx_queue_name(unsigned id)
+{
+	/* buffer for return value. Size calculated by %u being replaced
+	 * by maximum 3 digits (plus an extra byte for safety) */
+	static char buffer[sizeof(MP_CLIENT_RXQ_NAME) + 2];
+
+	snprintf(buffer, sizeof(buffer), MP_CLIENT_RXQ_NAME, id);
+	return buffer;
+}
+
+#define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
+
+#endif
diff --git a/src/spdk/dpdk/examples/multi_process/hotplug_mp/Makefile b/src/spdk/dpdk/examples/multi_process/hotplug_mp/Makefile
new file mode 100644
index 000000000..1fd7aa085
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/hotplug_mp/Makefile
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2018 Intel Corporation
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = hotplug_mp
+
+# all source are stored in SRCS-y
+SRCS-y := main.c commands.c
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+CFLAGS += -DALLOW_EXPERIMENTAL_API
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/src/spdk/dpdk/examples/multi_process/hotplug_mp/commands.c b/src/spdk/dpdk/examples/multi_process/hotplug_mp/commands.c
new file mode 100644
index 000000000..a8a39d07f
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/hotplug_mp/commands.c
@@ -0,0 +1,214 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation.
+ */
+
+#include <cmdline_rdline.h>
+#include <cmdline_parse.h>
+#include <cmdline_parse_ipaddr.h>
+#include <cmdline_parse_num.h>
+#include <cmdline_parse_string.h>
+#include <cmdline.h>
+#include <rte_ethdev.h>
+
+/**********************************************************/
+
+struct cmd_help_result {
+	cmdline_fixed_string_t help;
+};
+
+static void cmd_help_parsed(__rte_unused void *parsed_result,
+			    struct cmdline *cl,
+			    __rte_unused void *data)
+{
+	cmdline_printf(cl,
+		       "commands:\n"
+		       "- attach <devargs>\n"
+		       "- detach <devargs>\n"
+		       "- list\n\n");
+}
+
+cmdline_parse_token_string_t cmd_help_help =
+	TOKEN_STRING_INITIALIZER(struct cmd_help_result, help, "help");
+
+cmdline_parse_inst_t cmd_help = {
+	.f = cmd_help_parsed,  /* function to call */
+	.data = NULL,      /* 2nd arg of func */
+	.help_str = "show help",
+	.tokens = {        /* token list, NULL terminated */
+		(void *)&cmd_help_help,
+		NULL,
+	},
+};
+
+/**********************************************************/
+
+struct cmd_quit_result {
+	cmdline_fixed_string_t quit;
+};
+
+static void cmd_quit_parsed(__rte_unused void *parsed_result,
+			    struct cmdline *cl,
+			    __rte_unused void *data)
+{
+	cmdline_quit(cl);
+}
+
+cmdline_parse_token_string_t cmd_quit_quit =
+	TOKEN_STRING_INITIALIZER(struct cmd_quit_result, quit, "quit");
+
+cmdline_parse_inst_t cmd_quit = {
+	.f = cmd_quit_parsed,  /* function to call */
+	.data = NULL,      /* 2nd arg of func */
+	.help_str = "quit",
+	.tokens = {        /* token list, NULL terminated */
+		(void *)&cmd_quit_quit,
+		NULL,
+	},
+};
+
+/**********************************************************/
+
+struct cmd_list_result {
+	cmdline_fixed_string_t list;
+};
+
+static void cmd_list_parsed(__rte_unused void *parsed_result,
+			    struct cmdline *cl,
+			    __rte_unused void *data)
+{
+	uint16_t port_id;
+	char dev_name[RTE_DEV_NAME_MAX_LEN];
+
+	cmdline_printf(cl, "list all etherdev\n");
+
+	RTE_ETH_FOREACH_DEV(port_id) {
+		rte_eth_dev_get_name_by_port(port_id, dev_name);
+		if (strlen(dev_name) > 0)
+			cmdline_printf(cl, "%d\t%s\n", port_id, dev_name);
+		else
+			printf("empty dev_name is not expected!\n");
+	}
+}
+
+cmdline_parse_token_string_t cmd_list_list =
+	TOKEN_STRING_INITIALIZER(struct cmd_list_result, list, "list");
+
+cmdline_parse_inst_t cmd_list = {
+	.f = cmd_list_parsed,  /* function to call */
+	.data = NULL,      /* 2nd arg of func */
+	.help_str = "list all devices",
+	.tokens = {        /* token list, NULL terminated */
+		(void *)&cmd_list_list,
+		NULL,
+	},
+};
+
+/**********************************************************/
+
+struct cmd_dev_attach_result {
+	cmdline_fixed_string_t attach;
+	cmdline_fixed_string_t devargs;
+};
+
+static void cmd_dev_attach_parsed(void *parsed_result,
+				  struct cmdline *cl,
+				  __rte_unused void *data)
+{
+	struct cmd_dev_attach_result *res = parsed_result;
+	struct rte_devargs da;
+
+	memset(&da, 0, sizeof(da));
+
+	if (rte_devargs_parsef(&da, "%s", res->devargs)) {
+		cmdline_printf(cl, "cannot parse devargs\n");
+		if (da.args)
+			free(da.args);
+		return;
+	}
+
+	if (!rte_eal_hotplug_add(da.bus->name, da.name, da.args))
+		cmdline_printf(cl, "attached device %s\n", da.name);
+	else
+		cmdline_printf(cl, "failed to attached device %s\n",
+				da.name);
+}
+
+cmdline_parse_token_string_t cmd_dev_attach_attach =
+	TOKEN_STRING_INITIALIZER(struct cmd_dev_attach_result, attach,
+				 "attach");
+cmdline_parse_token_string_t cmd_dev_attach_devargs =
+	TOKEN_STRING_INITIALIZER(struct cmd_dev_attach_result, devargs, NULL);
+
+cmdline_parse_inst_t cmd_attach_device = {
+	.f = cmd_dev_attach_parsed,  /* function to call */
+	.data = NULL,      /* 2nd arg of func */
+	.help_str = "attach a device",
+	.tokens = {        /* token list, NULL terminated */
+		(void *)&cmd_dev_attach_attach,
+		(void *)&cmd_dev_attach_devargs,
+		NULL,
+	},
+};
+
+/**********************************************************/
+
+struct cmd_dev_detach_result {
+	cmdline_fixed_string_t detach;
+	cmdline_fixed_string_t devargs;
+};
+
+static void cmd_dev_detach_parsed(void *parsed_result,
+				   struct cmdline *cl,
+				   __rte_unused void *data)
+{
+	struct cmd_dev_detach_result *res = parsed_result;
+	struct rte_devargs da;
+
+	memset(&da, 0, sizeof(da));
+
+	if (rte_devargs_parsef(&da, "%s", res->devargs)) {
+		cmdline_printf(cl, "cannot parse devargs\n");
+		if (da.args)
+			free(da.args);
+		return;
+	}
+
+	printf("detaching...\n");
+	if (!rte_eal_hotplug_remove(da.bus->name, da.name))
+		cmdline_printf(cl, "detached device %s\n",
+			da.name);
+	else
+		cmdline_printf(cl, "failed to dettach device %s\n",
+			da.name);
+}
+
+cmdline_parse_token_string_t cmd_dev_detach_detach =
+	TOKEN_STRING_INITIALIZER(struct cmd_dev_detach_result, detach,
+				 "detach");
+
+cmdline_parse_token_string_t cmd_dev_detach_devargs =
+	TOKEN_STRING_INITIALIZER(struct cmd_dev_detach_result, devargs, NULL);
+
+cmdline_parse_inst_t cmd_detach_device = {
+	.f = cmd_dev_detach_parsed,  /* function to call */
+	.data = NULL,      /* 2nd arg of func */
+	.help_str = "detach a device",
+	.tokens = {        /* token list, NULL terminated */
+		(void *)&cmd_dev_detach_detach,
+		(void *)&cmd_dev_detach_devargs,
+		NULL,
+	},
+};
+
+/**********************************************************/
+/**********************************************************/
+/****** CONTEXT (list of instruction) */
+
+cmdline_parse_ctx_t main_ctx[] = {
+	(cmdline_parse_inst_t *)&cmd_help,
+	(cmdline_parse_inst_t *)&cmd_quit,
+	(cmdline_parse_inst_t *)&cmd_list,
+	(cmdline_parse_inst_t *)&cmd_attach_device,
+	(cmdline_parse_inst_t *)&cmd_detach_device,
+	NULL,
+};
diff --git a/src/spdk/dpdk/examples/multi_process/hotplug_mp/commands.h b/src/spdk/dpdk/examples/multi_process/hotplug_mp/commands.h
new file mode 100644
index 000000000..afcf177db
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/hotplug_mp/commands.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+#ifndef _COMMANDS_H_
+#define _COMMANDS_H_
+
+extern cmdline_parse_ctx_t main_ctx[];
+
+#endif /* _COMMANDS_H_ */
diff --git a/src/spdk/dpdk/examples/multi_process/hotplug_mp/main.c b/src/spdk/dpdk/examples/multi_process/hotplug_mp/main.c
new file mode 100644
index 000000000..d66858078
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/hotplug_mp/main.c
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <errno.h>
+#include <termios.h>
+#include <sys/queue.h>
+
+#include <cmdline_rdline.h>
+#include <cmdline_parse.h>
+#include <cmdline_socket.h>
+#include <cmdline.h>
+
+#include <rte_memory.h>
+#include <rte_eal.h>
+#include <rte_debug.h>
+
+#include "commands.h"
+
+int main(int argc, char **argv)
+{
+	int ret;
+	struct cmdline *cl;
+
+	ret = rte_eal_init(argc, argv);
+	if (ret < 0)
+		rte_panic("Cannot init EAL\n");
+
+	cl = cmdline_stdin_new(main_ctx, "example> ");
+	if (cl == NULL)
+		rte_panic("Cannot create cmdline instance\n");
+	cmdline_interact(cl);
+	cmdline_stdin_exit(cl);
+
+	rte_eal_cleanup();
+
+	return 0;
+}
diff --git a/src/spdk/dpdk/examples/multi_process/hotplug_mp/meson.build b/src/spdk/dpdk/examples/multi_process/hotplug_mp/meson.build
new file mode 100644
index 000000000..f82f4d48a
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/hotplug_mp/meson.build
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2019 Mellanox Technologies, Ltd
+
+# meson file, for building this example as part of a main DPDK build.
+#
+# To build this example as a standalone application with an already-installed
+# DPDK instance, use 'make'
+
+allow_experimental_apis = true
+sources = files(
+	'commands.c', 'main.c'
+)
diff --git a/src/spdk/dpdk/examples/multi_process/simple_mp/Makefile b/src/spdk/dpdk/examples/multi_process/simple_mp/Makefile
new file mode 100644
index 000000000..f88b499bd
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/simple_mp/Makefile
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2010-2014 Intel Corporation
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = simple_mp
+
+# all source are stored in SRCS-y
+SRCS-y := main.c mp_commands.c
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+CFLAGS += -DALLOW_EXPERIMENTAL_API
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/src/spdk/dpdk/examples/multi_process/simple_mp/main.c b/src/spdk/dpdk/examples/multi_process/simple_mp/main.c
new file mode 100644
index 000000000..fc7952846
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/simple_mp/main.c
@@ -0,0 +1,125 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+/*
+ * This sample application is a simple multi-process application which
+ * demostrates sharing of queues and memory pools between processes, and
+ * using those queues/pools for communication between the processes.
+ *
+ * Application is designed to run with two processes, a primary and a
+ * secondary, and each accepts commands on the commandline, the most
+ * important of which is "send", which just sends a string to the other
+ * process.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <unistd.h>
+#include <termios.h>
+#include <sys/queue.h>
+
+#include <rte_common.h>
+#include <rte_memory.h>
+#include <rte_launch.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_debug.h>
+#include <rte_atomic.h>
+#include <rte_branch_prediction.h>
+#include <rte_ring.h>
+#include <rte_log.h>
+#include <rte_mempool.h>
+#include <cmdline_rdline.h>
+#include <cmdline_parse.h>
+#include <cmdline_parse_string.h>
+#include <cmdline_socket.h>
+#include <cmdline.h>
+#include "mp_commands.h"
+
+#define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
+
+static const char *_MSG_POOL = "MSG_POOL";
+static const char *_SEC_2_PRI = "SEC_2_PRI";
+static const char *_PRI_2_SEC = "PRI_2_SEC";
+
+struct rte_ring *send_ring, *recv_ring;
+struct rte_mempool *message_pool;
+volatile int quit = 0;
+
+static int
+lcore_recv(__rte_unused void *arg)
+{
+	unsigned lcore_id = rte_lcore_id();
+
+	printf("Starting core %u\n", lcore_id);
+	while (!quit){
+		void *msg;
+		if (rte_ring_dequeue(recv_ring, &msg) < 0){
+			usleep(5);
+			continue;
+		}
+		printf("core %u: Received '%s'\n", lcore_id, (char *)msg);
+		rte_mempool_put(message_pool, msg);
+	}
+
+	return 0;
+}
+
+int
+main(int argc, char **argv)
+{
+	const unsigned flags = 0;
+	const unsigned ring_size = 64;
+	const unsigned pool_size = 1024;
+	const unsigned pool_cache = 32;
+	const unsigned priv_data_sz = 0;
+
+	int ret;
+	unsigned lcore_id;
+
+	ret = rte_eal_init(argc, argv);
+	if (ret < 0)
+		rte_exit(EXIT_FAILURE, "Cannot init EAL\n");
+
+	if (rte_eal_process_type() == RTE_PROC_PRIMARY){
+		send_ring = rte_ring_create(_PRI_2_SEC, ring_size, rte_socket_id(), flags);
+		recv_ring = rte_ring_create(_SEC_2_PRI, ring_size, rte_socket_id(), flags);
+		message_pool = rte_mempool_create(_MSG_POOL, pool_size,
+				STR_TOKEN_SIZE, pool_cache, priv_data_sz,
+				NULL, NULL, NULL, NULL,
+				rte_socket_id(), flags);
+	} else {
+		recv_ring = rte_ring_lookup(_PRI_2_SEC);
+		send_ring = rte_ring_lookup(_SEC_2_PRI);
+		message_pool = rte_mempool_lookup(_MSG_POOL);
+	}
+	if (send_ring == NULL)
+		rte_exit(EXIT_FAILURE, "Problem getting sending ring\n");
+	if (recv_ring == NULL)
+		rte_exit(EXIT_FAILURE, "Problem getting receiving ring\n");
+	if (message_pool == NULL)
+		rte_exit(EXIT_FAILURE, "Problem getting message pool\n");
+
+	RTE_LOG(INFO, APP, "Finished Process Init.\n");
+
+	/* call lcore_recv() on every slave lcore */
+	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+		rte_eal_remote_launch(lcore_recv, NULL, lcore_id);
+	}
+
+	/* call cmd prompt on master lcore */
+	struct cmdline *cl = cmdline_stdin_new(simple_mp_ctx, "\nsimple_mp > ");
+	if (cl == NULL)
+		rte_exit(EXIT_FAILURE, "Cannot create cmdline instance\n");
+	cmdline_interact(cl);
+	cmdline_stdin_exit(cl);
+
+	rte_eal_mp_wait_lcore();
+	return 0;
+}
diff --git a/src/spdk/dpdk/examples/multi_process/simple_mp/meson.build b/src/spdk/dpdk/examples/multi_process/simple_mp/meson.build
new file mode 100644
index 000000000..cb02c65a6
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/simple_mp/meson.build
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2019 Mellanox Technologies, Ltd
+
+# meson file, for building this example as part of a main DPDK build.
+#
+# To build this example as a standalone application with an already-installed
+# DPDK instance, use 'make'
+
+allow_experimental_apis = true
+sources = files(
+	'mp_commands.c', 'main.c'
+)
diff --git a/src/spdk/dpdk/examples/multi_process/simple_mp/mp_commands.c b/src/spdk/dpdk/examples/multi_process/simple_mp/mp_commands.c
new file mode 100644
index 000000000..311d0fe77
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/simple_mp/mp_commands.c
@@ -0,0 +1,136 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <termios.h>
+#include <errno.h>
+#include <sys/queue.h>
+
+#include <rte_common.h>
+#include <rte_memory.h>
+#include <rte_eal.h>
+#include <rte_atomic.h>
+#include <rte_branch_prediction.h>
+#include <rte_launch.h>
+#include <rte_log.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_ring.h>
+#include <rte_debug.h>
+#include <rte_mempool.h>
+#include <rte_string_fns.h>
+
+#include <cmdline_rdline.h>
+#include <cmdline_parse.h>
+#include <cmdline_parse_string.h>
+#include <cmdline_socket.h>
+#include <cmdline.h>
+#include "mp_commands.h"
+
+/**********************************************************/
+
+struct cmd_send_result {
+	cmdline_fixed_string_t action;
+	cmdline_fixed_string_t message;
+};
+
+static void cmd_send_parsed(void *parsed_result,
+		__rte_unused struct cmdline *cl,
+		__rte_unused void *data)
+{
+	void *msg = NULL;
+	struct cmd_send_result *res = parsed_result;
+
+	if (rte_mempool_get(message_pool, &msg) < 0)
+		rte_panic("Failed to get message buffer\n");
+	strlcpy((char *)msg, res->message, STR_TOKEN_SIZE);
+	if (rte_ring_enqueue(send_ring, msg) < 0) {
+		printf("Failed to send message - message discarded\n");
+		rte_mempool_put(message_pool, msg);
+	}
+}
+
+cmdline_parse_token_string_t cmd_send_action =
+	TOKEN_STRING_INITIALIZER(struct cmd_send_result, action, "send");
+cmdline_parse_token_string_t cmd_send_message =
+	TOKEN_STRING_INITIALIZER(struct cmd_send_result, message, NULL);
+
+cmdline_parse_inst_t cmd_send = {
+	.f = cmd_send_parsed,  /* function to call */
+	.data = NULL,      /* 2nd arg of func */
+	.help_str = "send a string to another process",
+	.tokens = {        /* token list, NULL terminated */
+			(void *)&cmd_send_action,
+			(void *)&cmd_send_message,
+			NULL,
+	},
+};
+
+/**********************************************************/
+
+struct cmd_quit_result {
+	cmdline_fixed_string_t quit;
+};
+
+static void cmd_quit_parsed(__rte_unused void *parsed_result,
+			    struct cmdline *cl,
+			    __rte_unused void *data)
+{
+	quit = 1;
+	cmdline_quit(cl);
+}
+
+cmdline_parse_token_string_t cmd_quit_quit =
+	TOKEN_STRING_INITIALIZER(struct cmd_quit_result, quit, "quit");
+
+cmdline_parse_inst_t cmd_quit = {
+	.f = cmd_quit_parsed,  /* function to call */
+	.data = NULL,      /* 2nd arg of func */
+	.help_str = "close the application",
+	.tokens = {        /* token list, NULL terminated */
+		(void *)&cmd_quit_quit,
+		NULL,
+	},
+};
+
+/**********************************************************/
+
+struct cmd_help_result {
+	cmdline_fixed_string_t help;
+};
+
+static void cmd_help_parsed(__rte_unused void *parsed_result,
+			    struct cmdline *cl,
+			    __rte_unused void *data)
+{
+	cmdline_printf(cl, "Simple demo example of multi-process in RTE\n\n"
+			"This is a readline-like interface that can be used to\n"
+			"send commands to the simple app. Commands supported are:\n\n"
+			"- send [string]\n" "- help\n" "- quit\n\n");
+}
+
+cmdline_parse_token_string_t cmd_help_help =
+	TOKEN_STRING_INITIALIZER(struct cmd_help_result, help, "help");
+
+cmdline_parse_inst_t cmd_help = {
+	.f = cmd_help_parsed,  /* function to call */
+	.data = NULL,      /* 2nd arg of func */
+	.help_str = "show help",
+	.tokens = {        /* token list, NULL terminated */
+		(void *)&cmd_help_help,
+		NULL,
+	},
+};
+
+/****** CONTEXT (list of instruction) */
+cmdline_parse_ctx_t simple_mp_ctx[] = {
+		(cmdline_parse_inst_t *)&cmd_send,
+		(cmdline_parse_inst_t *)&cmd_quit,
+		(cmdline_parse_inst_t *)&cmd_help,
+	NULL,
+};
diff --git a/src/spdk/dpdk/examples/multi_process/simple_mp/mp_commands.h b/src/spdk/dpdk/examples/multi_process/simple_mp/mp_commands.h
new file mode 100644
index 000000000..5d67413e7
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/simple_mp/mp_commands.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#ifndef _SIMPLE_MP_COMMANDS_H_
+#define _SIMPLE_MP_COMMANDS_H_
+
+extern struct rte_ring *send_ring;
+extern struct rte_mempool *message_pool;
+extern volatile int quit;
+
+extern cmdline_parse_ctx_t simple_mp_ctx[];
+
+#endif /* _SIMPLE_MP_COMMANDS_H_ */
diff --git a/src/spdk/dpdk/examples/multi_process/symmetric_mp/Makefile b/src/spdk/dpdk/examples/multi_process/symmetric_mp/Makefile
new file mode 100644
index 000000000..b7544489b
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/symmetric_mp/Makefile
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2010-2014 Intel Corporation
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = symmetric_mp
+
+# all source are stored in SRCS-y
+SRCS-y := main.c
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+CFLAGS += -DALLOW_EXPERIMENTAL_API
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/src/spdk/dpdk/examples/multi_process/symmetric_mp/main.c b/src/spdk/dpdk/examples/multi_process/symmetric_mp/main.c
new file mode 100644
index 000000000..9a16e198c
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/symmetric_mp/main.c
@@ -0,0 +1,479 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+/*
+ * Sample application demostrating how to do packet I/O in a multi-process
+ * environment. The same code can be run as a primary process and as a
+ * secondary process, just with a different proc-id parameter in each case
+ * (apart from the EAL flag to indicate a secondary process).
+ *
+ * Each process will read from the same ports, given by the port-mask
+ * parameter, which should be the same in each case, just using a different
+ * queue per port as determined by the proc-id parameter.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <sys/queue.h>
+#include <getopt.h>
+#include <signal.h>
+#include <inttypes.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_memory.h>
+#include <rte_launch.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_atomic.h>
+#include <rte_branch_prediction.h>
+#include <rte_debug.h>
+#include <rte_interrupts.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_mempool.h>
+#include <rte_memcpy.h>
+#include <rte_mbuf.h>
+#include <rte_string_fns.h>
+#include <rte_cycles.h>
+
+#define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
+
+#define NB_MBUFS 64*1024 /* use 64k mbufs */
+#define MBUF_CACHE_SIZE 256
+#define PKT_BURST 32
+#define RX_RING_SIZE 1024
+#define TX_RING_SIZE 1024
+
+#define PARAM_PROC_ID "proc-id"
+#define PARAM_NUM_PROCS "num-procs"
+
+/* for each lcore, record the elements of the ports array to use */
+struct lcore_ports{
+	unsigned start_port;
+	unsigned num_ports;
+};
+
+/* structure to record the rx and tx packets. Put two per cache line as ports
+ * used in pairs */
+struct port_stats{
+	unsigned rx;
+	unsigned tx;
+	unsigned drop;
+} __rte_aligned(RTE_CACHE_LINE_SIZE / 2);
+
+static int proc_id = -1;
+static unsigned num_procs = 0;
+
+static uint16_t ports[RTE_MAX_ETHPORTS];
+static unsigned num_ports = 0;
+
+static struct lcore_ports lcore_ports[RTE_MAX_LCORE];
+static struct port_stats pstats[RTE_MAX_ETHPORTS];
+
+/* prints the usage statement and quits with an error message */
+static void
+smp_usage(const char *prgname, const char *errmsg)
+{
+	printf("\nError: %s\n",errmsg);
+	printf("\n%s [EAL options] -- -p <port mask> "
+			"--"PARAM_NUM_PROCS" <n>"
+			" --"PARAM_PROC_ID" <id>\n"
+			"-p         : a hex bitmask indicating what ports are to be used\n"
+			"--num-procs: the number of processes which will be used\n"
+			"--proc-id  : the id of the current process (id < num-procs)\n"
+			"\n",
+			prgname);
+	exit(1);
+}
+
+
+/* signal handler configured for SIGTERM and SIGINT to print stats on exit */
+static void
+print_stats(int signum)
+{
+	unsigned i;
+	printf("\nExiting on signal %d\n\n", signum);
+	for (i = 0; i < num_ports; i++){
+		const uint8_t p_num = ports[i];
+		printf("Port %u: RX - %u, TX - %u, Drop - %u\n", (unsigned)p_num,
+				pstats[p_num].rx, pstats[p_num].tx, pstats[p_num].drop);
+	}
+	exit(0);
+}
+
+/* Parse the argument given in the command line of the application */
+static int
+smp_parse_args(int argc, char **argv)
+{
+	int opt, ret;
+	char **argvopt;
+	int option_index;
+	uint16_t i, port_mask = 0;
+	char *prgname = argv[0];
+	static struct option lgopts[] = {
+			{PARAM_NUM_PROCS, 1, 0, 0},
+			{PARAM_PROC_ID, 1, 0, 0},
+			{NULL, 0, 0, 0}
+	};
+
+	argvopt = argv;
+
+	while ((opt = getopt_long(argc, argvopt, "p:", \
+			lgopts, &option_index)) != EOF) {
+
+		switch (opt) {
+		case 'p':
+			port_mask = strtoull(optarg, NULL, 16);
+			break;
+			/* long options */
+		case 0:
+			if (strncmp(lgopts[option_index].name, PARAM_NUM_PROCS, 8) == 0)
+				num_procs = atoi(optarg);
+			else if (strncmp(lgopts[option_index].name, PARAM_PROC_ID, 7) == 0)
+				proc_id = atoi(optarg);
+			break;
+
+		default:
+			smp_usage(prgname, "Cannot parse all command-line arguments\n");
+		}
+	}
+
+	if (optind >= 0)
+		argv[optind-1] = prgname;
+
+	if (proc_id < 0)
+		smp_usage(prgname, "Invalid or missing proc-id parameter\n");
+	if (rte_eal_process_type() == RTE_PROC_PRIMARY && num_procs == 0)
+		smp_usage(prgname, "Invalid or missing num-procs parameter\n");
+	if (port_mask == 0)
+		smp_usage(prgname, "Invalid or missing port mask\n");
+
+	/* get the port numbers from the port mask */
+	RTE_ETH_FOREACH_DEV(i)
+		if(port_mask & (1 << i))
+			ports[num_ports++] = (uint8_t)i;
+
+	ret = optind-1;
+	optind = 1; /* reset getopt lib */
+
+	return ret;
+}
+
+/*
+ * Initialises a given port using global settings and with the rx buffers
+ * coming from the mbuf_pool passed as parameter
+ */
+static inline int
+smp_port_init(uint16_t port, struct rte_mempool *mbuf_pool,
+	       uint16_t num_queues)
+{
+	struct rte_eth_conf port_conf = {
+			.rxmode = {
+				.mq_mode	= ETH_MQ_RX_RSS,
+				.split_hdr_size = 0,
+				.offloads = DEV_RX_OFFLOAD_CHECKSUM,
+			},
+			.rx_adv_conf = {
+				.rss_conf = {
+					.rss_key = NULL,
+					.rss_hf = ETH_RSS_IP,
+				},
+			},
+			.txmode = {
+				.mq_mode = ETH_MQ_TX_NONE,
+			}
+	};
+	const uint16_t rx_rings = num_queues, tx_rings = num_queues;
+	struct rte_eth_dev_info info;
+	struct rte_eth_rxconf rxq_conf;
+	struct rte_eth_txconf txq_conf;
+	int retval;
+	uint16_t q;
+	uint16_t nb_rxd = RX_RING_SIZE;
+	uint16_t nb_txd = TX_RING_SIZE;
+	uint64_t rss_hf_tmp;
+
+	if (rte_eal_process_type() == RTE_PROC_SECONDARY)
+		return 0;
+
+	if (!rte_eth_dev_is_valid_port(port))
+		return -1;
+
+	printf("# Initialising port %u... ", port);
+	fflush(stdout);
+
+	retval = rte_eth_dev_info_get(port, &info);
+	if (retval != 0) {
+		printf("Error during getting device (port %u) info: %s\n",
+				port, strerror(-retval));
+		return retval;
+	}
+
+	info.default_rxconf.rx_drop_en = 1;
+
+	if (info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
+		port_conf.txmode.offloads |=
+			DEV_TX_OFFLOAD_MBUF_FAST_FREE;
+
+	rss_hf_tmp = port_conf.rx_adv_conf.rss_conf.rss_hf;
+	port_conf.rx_adv_conf.rss_conf.rss_hf &= info.flow_type_rss_offloads;
+	if (port_conf.rx_adv_conf.rss_conf.rss_hf != rss_hf_tmp) {
+		printf("Port %u modified RSS hash function based on hardware support,"
+			"requested:%#"PRIx64" configured:%#"PRIx64"\n",
+			port,
+			rss_hf_tmp,
+			port_conf.rx_adv_conf.rss_conf.rss_hf);
+	}
+
+	retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
+	if (retval < 0)
+		return retval;
+
+	retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
+	if (retval < 0)
+		return retval;
+
+	rxq_conf = info.default_rxconf;
+	rxq_conf.offloads = port_conf.rxmode.offloads;
+	for (q = 0; q < rx_rings; q ++) {
+		retval = rte_eth_rx_queue_setup(port, q, nb_rxd,
+				rte_eth_dev_socket_id(port),
+				&rxq_conf,
+				mbuf_pool);
+		if (retval < 0)
+			return retval;
+	}
+
+	txq_conf = info.default_txconf;
+	txq_conf.offloads = port_conf.txmode.offloads;
+	for (q = 0; q < tx_rings; q ++) {
+		retval = rte_eth_tx_queue_setup(port, q, nb_txd,
+				rte_eth_dev_socket_id(port),
+				&txq_conf);
+		if (retval < 0)
+			return retval;
+	}
+
+	retval = rte_eth_promiscuous_enable(port);
+	if (retval != 0)
+		return retval;
+
+	retval  = rte_eth_dev_start(port);
+	if (retval < 0)
+		return retval;
+
+	return 0;
+}
+
+/* Goes through each of the lcores and calculates what ports should
+ * be used by that core. Fills in the global lcore_ports[] array.
+ */
+static void
+assign_ports_to_cores(void)
+{
+
+	const unsigned int lcores = rte_lcore_count();
+	const unsigned port_pairs = num_ports / 2;
+	const unsigned pairs_per_lcore = port_pairs / lcores;
+	unsigned extra_pairs = port_pairs % lcores;
+	unsigned ports_assigned = 0;
+	unsigned i;
+
+	RTE_LCORE_FOREACH(i) {
+		lcore_ports[i].start_port = ports_assigned;
+		lcore_ports[i].num_ports = pairs_per_lcore * 2;
+		if (extra_pairs > 0) {
+			lcore_ports[i].num_ports += 2;
+			extra_pairs--;
+		}
+		ports_assigned += lcore_ports[i].num_ports;
+	}
+}
+
+/* Main function used by the processing threads.
+ * Prints out some configuration details for the thread and then begins
+ * performing packet RX and TX.
+ */
+static int
+lcore_main(void *arg __rte_unused)
+{
+	const unsigned id = rte_lcore_id();
+	const unsigned start_port = lcore_ports[id].start_port;
+	const unsigned end_port = start_port + lcore_ports[id].num_ports;
+	const uint16_t q_id = (uint16_t)proc_id;
+	unsigned p, i;
+	char msgbuf[256];
+	int msgbufpos = 0;
+
+	if (start_port == end_port){
+		printf("Lcore %u has nothing to do\n", id);
+		return 0;
+	}
+
+	/* build up message in msgbuf before printing to decrease likelihood
+	 * of multi-core message interleaving.
+	 */
+	msgbufpos += snprintf(msgbuf, sizeof(msgbuf) - msgbufpos,
+			"Lcore %u using ports ", id);
+	for (p = start_port; p < end_port; p++){
+		msgbufpos += snprintf(msgbuf + msgbufpos, sizeof(msgbuf) - msgbufpos,
+				"%u ", (unsigned)ports[p]);
+	}
+	printf("%s\n", msgbuf);
+	printf("lcore %u using queue %u of each port\n", id, (unsigned)q_id);
+
+	/* handle packet I/O from the ports, reading and writing to the
+	 * queue number corresponding to our process number (not lcore id)
+	 */
+
+	for (;;) {
+		struct rte_mbuf *buf[PKT_BURST];
+
+		for (p = start_port; p < end_port; p++) {
+			const uint8_t src = ports[p];
+			const uint8_t dst = ports[p ^ 1]; /* 0 <-> 1, 2 <-> 3 etc */
+			const uint16_t rx_c = rte_eth_rx_burst(src, q_id, buf, PKT_BURST);
+			if (rx_c == 0)
+				continue;
+			pstats[src].rx += rx_c;
+
+			const uint16_t tx_c = rte_eth_tx_burst(dst, q_id, buf, rx_c);
+			pstats[dst].tx += tx_c;
+			if (tx_c != rx_c) {
+				pstats[dst].drop += (rx_c - tx_c);
+				for (i = tx_c; i < rx_c; i++)
+					rte_pktmbuf_free(buf[i]);
+			}
+		}
+	}
+}
+
+/* Check the link status of all ports in up to 9s, and print them finally */
+static void
+check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
+{
+#define CHECK_INTERVAL 100 /* 100ms */
+#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
+	uint16_t portid;
+	uint8_t count, all_ports_up, print_flag = 0;
+	struct rte_eth_link link;
+	int ret;
+
+	printf("\nChecking link status");
+	fflush(stdout);
+	for (count = 0; count <= MAX_CHECK_TIME; count++) {
+		all_ports_up = 1;
+		for (portid = 0; portid < port_num; portid++) {
+			if ((port_mask & (1 << portid)) == 0)
+				continue;
+			memset(&link, 0, sizeof(link));
+			ret = rte_eth_link_get_nowait(portid, &link);
+			if (ret < 0) {
+				all_ports_up = 0;
+				if (print_flag == 1)
+					printf("Port %u link get failed: %s\n",
+						portid, rte_strerror(-ret));
+				continue;
+			}
+			/* print link status if flag set */
+			if (print_flag == 1) {
+				if (link.link_status)
+					printf(
+					"Port%d Link Up. Speed %u Mbps - %s\n",
+						portid, link.link_speed,
+				(link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
+					("full-duplex") : ("half-duplex"));
+				else
+					printf("Port %d Link Down\n", portid);
+				continue;
+			}
+			/* clear all_ports_up flag if any link down */
+			if (link.link_status == ETH_LINK_DOWN) {
+				all_ports_up = 0;
+				break;
+			}
+		}
+		/* after finally printing all link status, get out */
+		if (print_flag == 1)
+			break;
+
+		if (all_ports_up == 0) {
+			printf(".");
+			fflush(stdout);
+			rte_delay_ms(CHECK_INTERVAL);
+		}
+
+		/* set the print_flag if all ports up or timeout */
+		if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
+			print_flag = 1;
+			printf("done\n");
+		}
+	}
+}
+
+/* Main function.
+ * Performs initialisation and then calls the lcore_main on each core
+ * to do the packet-processing work.
+ */
+int
+main(int argc, char **argv)
+{
+	static const char *_SMP_MBUF_POOL = "SMP_MBUF_POOL";
+	int ret;
+	unsigned i;
+	enum rte_proc_type_t proc_type;
+	struct rte_mempool *mp;
+
+	/* set up signal handlers to print stats on exit */
+	signal(SIGINT, print_stats);
+	signal(SIGTERM, print_stats);
+
+	/* initialise the EAL for all */
+	ret = rte_eal_init(argc, argv);
+	if (ret < 0)
+		rte_exit(EXIT_FAILURE, "Cannot init EAL\n");
+	argc -= ret;
+	argv += ret;
+
+	/* determine the NIC devices available */
+	if (rte_eth_dev_count_avail() == 0)
+		rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
+
+	/* parse application arguments (those after the EAL ones) */
+	smp_parse_args(argc, argv);
+
+	proc_type = rte_eal_process_type();
+	mp = (proc_type == RTE_PROC_SECONDARY) ?
+			rte_mempool_lookup(_SMP_MBUF_POOL) :
+			rte_pktmbuf_pool_create(_SMP_MBUF_POOL, NB_MBUFS,
+				MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
+				rte_socket_id());
+	if (mp == NULL)
+		rte_exit(EXIT_FAILURE, "Cannot get memory pool for buffers\n");
+
+	if (num_ports & 1)
+		rte_exit(EXIT_FAILURE, "Application must use an even number of ports\n");
+	for(i = 0; i < num_ports; i++){
+		if(proc_type == RTE_PROC_PRIMARY)
+			if (smp_port_init(ports[i], mp, (uint16_t)num_procs) < 0)
+				rte_exit(EXIT_FAILURE, "Error initialising ports\n");
+	}
+
+	if (proc_type == RTE_PROC_PRIMARY)
+		check_all_ports_link_status((uint8_t)num_ports, (~0x0));
+
+	assign_ports_to_cores();
+
+	RTE_LOG(INFO, APP, "Finished Process Init.\n");
+
+	rte_eal_mp_remote_launch(lcore_main, NULL, CALL_MASTER);
+
+	return 0;
+}
diff --git a/src/spdk/dpdk/examples/multi_process/symmetric_mp/meson.build b/src/spdk/dpdk/examples/multi_process/symmetric_mp/meson.build
new file mode 100644
index 000000000..14167825b
--- /dev/null
+++ b/src/spdk/dpdk/examples/multi_process/symmetric_mp/meson.build
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2019 Mellanox Technologies, Ltd
+
+# meson file, for building this example as part of a main DPDK build.
+#
+# To build this example as a standalone application with an already-installed
+# DPDK instance, use 'make'
+
+allow_experimental_apis = true
+sources = files(
+	'main.c'
+)