[dpdk-dev] [PATCH v2 4/6] examples/quota-watermark: remove example from DPDK

[Ciara Power <ciara.power@intel.com>]

Original DPDK rings code had explicit support for a
single watermark per-ring, but more recent releases of
DPDK had a more general mechanism where each enqueue
or dequeue call could return the remaining elements/free-slots
in the ring.
Therefore, this example is not as relevant as before and can be removed.

Signed-off-by: Ciara Power <ciara.power@intel.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 MAINTAINERS                                  |   3 -
 doc/guides/sample_app_ug/index.rst           |   1 -
 doc/guides/sample_app_ug/quota_watermark.rst | 465 -------------------
 examples/Makefile                            |   1 -
 examples/meson.build                         |   2 +-
 examples/quota_watermark/Makefile            |  16 -
 examples/quota_watermark/include/conf.h      |  19 -
 examples/quota_watermark/meson.build         |  10 -
 examples/quota_watermark/qw/Makefile         |  22 -
 examples/quota_watermark/qw/args.c           |  78 ----
 examples/quota_watermark/qw/args.h           |  12 -
 examples/quota_watermark/qw/init.c           | 164 -------
 examples/quota_watermark/qw/init.h           |  14 -
 examples/quota_watermark/qw/main.c           | 365 ---------------
 examples/quota_watermark/qw/main.h           |  31 --
 examples/quota_watermark/qwctl/Makefile      |  22 -
 examples/quota_watermark/qwctl/commands.c    | 196 --------
 examples/quota_watermark/qwctl/commands.h    |  12 -
 examples/quota_watermark/qwctl/qwctl.c       |  67 ---
 examples/quota_watermark/qwctl/qwctl.h       |  12 -
 20 files changed, 1 insertion(+), 1511 deletions(-)
 delete mode 100644 doc/guides/sample_app_ug/quota_watermark.rst
 delete mode 100644 examples/quota_watermark/Makefile
 delete mode 100644 examples/quota_watermark/include/conf.h
 delete mode 100644 examples/quota_watermark/meson.build
 delete mode 100644 examples/quota_watermark/qw/Makefile
 delete mode 100644 examples/quota_watermark/qw/args.c
 delete mode 100644 examples/quota_watermark/qw/args.h
 delete mode 100644 examples/quota_watermark/qw/init.c
 delete mode 100644 examples/quota_watermark/qw/init.h
 delete mode 100644 examples/quota_watermark/qw/main.c
 delete mode 100644 examples/quota_watermark/qw/main.h
 delete mode 100644 examples/quota_watermark/qwctl/Makefile
 delete mode 100644 examples/quota_watermark/qwctl/commands.c
 delete mode 100644 examples/quota_watermark/qwctl/commands.h
 delete mode 100644 examples/quota_watermark/qwctl/qwctl.c
 delete mode 100644 examples/quota_watermark/qwctl/qwctl.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 92c3f6af4..7be363327 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1474,9 +1474,6 @@ F: doc/guides/sample_app_ug/performance_thread.rst
 
 F: examples/ptpclient/
 
-F: examples/quota_watermark/
-F: doc/guides/sample_app_ug/quota_watermark.rst
-
 M: Bruce Richardson <bruce.richardson@intel.com>
 M: John McNamara <john.mcnamara@intel.com>
 F: examples/rxtx_callbacks/
diff --git a/doc/guides/sample_app_ug/index.rst b/doc/guides/sample_app_ug/index.rst
index d212f81fe..dafe8553f 100644
--- a/doc/guides/sample_app_ug/index.rst
+++ b/doc/guides/sample_app_ug/index.rst
@@ -36,7 +36,6 @@ Sample Applications User Guides
     multi_process
     qos_metering
     qos_scheduler
-    quota_watermark
     timer
     packet_ordering
     vmdq_dcb_forwarding
diff --git a/doc/guides/sample_app_ug/quota_watermark.rst b/doc/guides/sample_app_ug/quota_watermark.rst
deleted file mode 100644
index 125e6fb73..000000000
--- a/doc/guides/sample_app_ug/quota_watermark.rst
+++ /dev/null
@@ -1,465 +0,0 @@
-..  SPDX-License-Identifier: BSD-3-Clause
-    Copyright(c) 2010-2017 Intel Corporation.
-
-Quota and Watermark Sample Application
-======================================
-
-The Quota and Watermark sample application is a simple example of packet
-processing using Data Plane Development Kit (DPDK) that showcases the use
-of a quota as the maximum number of packets enqueue/dequeue at a time and
-low and high thresholds, or watermarks, to signal low and high ring usage
-respectively.
-
-Additionally, it shows how the thresholds can be used to feedback congestion notifications to data producers by
-temporarily stopping processing overloaded rings and sending Ethernet flow control frames.
-
-This sample application is split in two parts:
-
-*   qw - The core quota and watermark sample application
-
-*   qwctl - A command line tool to alter quota and watermarks while qw is running
-
-Overview
---------
-
-The Quota and Watermark sample application performs forwarding for each packet that is received on a given port.
-The destination port is the adjacent port from the enabled port mask, that is,
-if the first four ports are enabled (port mask 0xf), ports 0 and 1 forward into each other,
-and ports 2 and 3 forward into each other.
-The MAC addresses of the forwarded Ethernet frames are not affected.
-
-Internally, packets are pulled from the ports by the master logical core and put on a variable length processing pipeline,
-each stage of which being connected by rings, as shown in :numref:`figure_pipeline_overview`.
-
-.. _figure_pipeline_overview:
-
-.. figure:: img/pipeline_overview.*
-
-   Pipeline Overview
-
-
-An adjustable quota value controls how many packets are being moved through the pipeline per enqueue and dequeue.
-Adjustable threshold values associated with the rings control a back-off mechanism that
-tries to prevent the pipeline from being overloaded by:
-
-*   Stopping enqueuing on rings for which the usage has crossed the high watermark threshold
-
-*   Sending Ethernet pause frames
-
-*   Only resuming enqueuing on a ring once its usage goes below a global low watermark threshold
-
-This mechanism allows congestion notifications to go up the ring pipeline and
-eventually lead to an Ethernet flow control frame being send to the source.
-
-On top of serving as an example of quota and watermark usage,
-this application can be used to benchmark ring based processing pipelines performance using a traffic- generator,
-as shown in :numref:`figure_ring_pipeline_perf_setup`.
-
-.. _figure_ring_pipeline_perf_setup:
-
-.. figure:: img/ring_pipeline_perf_setup.*
-
-   Ring-based Processing Pipeline Performance Setup
-
-Compiling the Application
--------------------------
-
-To compile the sample application see :doc:`compiling`.
-
-The application is located in the ``quota_watermark`` sub-directory.
-
-Running the Application
------------------------
-
-The core application, qw, has to be started first.
-
-Once it is up and running, one can alter quota and watermarks while it runs using the control application, qwctl.
-
-Running the Core Application
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-The application requires a single command line option:
-
-.. code-block:: console
-
-    ./qw/build/qw [EAL options] -- -p PORTMASK
-
-where,
-
--p PORTMASK: A hexadecimal bitmask of the ports to configure
-
-To run the application in a linux environment with four logical cores and ports 0 and 2,
-issue the following command:
-
-.. code-block:: console
-
-    ./qw/build/qw -l 0-3 -n 4 -- -p 5
-
-Refer to the *DPDK Getting Started Guide* for general information on running applications and
-the Environment Abstraction Layer (EAL) options.
-
-Running the Control Application
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-The control application requires a number of command line options:
-
-.. code-block:: console
-
-    ./qwctl/build/qwctl [EAL options] --proc-type=secondary
-
-The --proc-type=secondary option is necessary for the EAL to properly initialize the control application to
-use the same huge pages as the core application and  thus be able to access its rings.
-
-To run the application in a linux environment on logical core 0, issue the following command:
-
-.. code-block:: console
-
-    ./qwctl/build/qwctl -l 0 -n 4 --proc-type=secondary
-
-Refer to the *DPDK Getting Started* Guide for general information on running applications and
-the Environment Abstraction Layer (EAL) options.
-
-qwctl is an interactive command line that let the user change variables in a running instance of qw.
-The help command gives a list of available commands:
-
-.. code-block:: console
-
-    $ qwctl > help
-
-Code Overview
--------------
-
-The following sections provide a quick guide to the application's source code.
-
-Core Application - qw
-~~~~~~~~~~~~~~~~~~~~~
-
-EAL and Drivers Setup
-^^^^^^^^^^^^^^^^^^^^^
-
-The EAL arguments are parsed at the beginning of the main() function:
-
-.. code-block:: c
-
-    ret = rte_eal_init(argc, argv);
-    if (ret < 0)
-        rte_exit(EXIT_FAILURE, "Cannot initialize EAL\n");
-
-    argc -= ret;
-    argv += ret;
-
-Then, a call to init_dpdk(), defined in init.c, is made to initialize the poll mode drivers:
-
-.. code-block:: c
-
-    void
-    init_dpdk(void)
-    {
-        int ret;
-
-        /* Bind the drivers to usable devices */
-
-        ret = rte_pci_probe();
-        if (ret < 0)
-            rte_exit(EXIT_FAILURE, "rte_pci_probe(): error %d\n", ret);
-
-        if (rte_eth_dev_count_avail() < 2)
-            rte_exit(EXIT_FAILURE, "Not enough Ethernet port available\n");
-    }
-
-To fully understand this code, it is recommended to study the chapters that relate to the *Poll Mode Driver*
-in the *DPDK Getting Started Guide* and the *DPDK API Reference*.
-
-Shared Variables Setup
-^^^^^^^^^^^^^^^^^^^^^^
-
-The quota and high and low watermark shared variables are put into an rte_memzone using a call to setup_shared_variables():
-
-.. code-block:: c
-
-    void
-    setup_shared_variables(void)
-    {
-           const struct rte_memzone *qw_memzone;
-
-           qw_memzone = rte_memzone_reserve(QUOTA_WATERMARK_MEMZONE_NAME,
-                          3 * sizeof(int), rte_socket_id(), 0);
-           if (qw_memzone == NULL)
-                   rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
-
-           quota = qw_memzone->addr;
-           low_watermark = (unsigned int *) qw_memzone->addr + 1;
-           high_watermark = (unsigned int *) qw_memzone->addr + 2;
-    }
-
-These three variables are initialized to a default value in main() and
-can be changed while qw is running using the qwctl control program.
-
-Application Arguments
-^^^^^^^^^^^^^^^^^^^^^
-
-The qw application only takes one argument: a port mask that specifies which ports should be used by the application.
-At least two ports are needed to run the application and there should be an even number of ports given in the port mask.
-
-The port mask parsing is done in parse_qw_args(), defined in args.c.
-
-Mbuf Pool Initialization
-^^^^^^^^^^^^^^^^^^^^^^^^
-
-Once the application's arguments are parsed, an mbuf pool is created.
-It contains a set of mbuf objects that are used by the driver and the application to store network packets:
-
-.. code-block:: c
-
-    /* Create a pool of mbuf to store packets */
-    mbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", MBUF_PER_POOL, 32, 0,
-					 MBUF_DATA_SIZE, rte_socket_id());
-
-    if (mbuf_pool == NULL)
-        rte_panic("%s\n", rte_strerror(rte_errno));
-
-The rte_mempool is a generic structure used to handle pools of objects.
-In this case, it is necessary to create a pool that will be used by the driver.
-
-The number of allocated pkt mbufs is MBUF_PER_POOL, with a data room size
-of MBUF_DATA_SIZE each.
-A per-lcore cache of 32 mbufs is kept.
-The memory is allocated in on the master lcore's socket, but it is possible to extend this code to allocate one mbuf pool per socket.
-
-The rte_pktmbuf_pool_create() function uses the default mbuf pool and mbuf
-initializers, respectively rte_pktmbuf_pool_init() and rte_pktmbuf_init().
-An advanced application may want to use the mempool API to create the
-mbuf pool with more control.
-
-Ports Configuration and Pairing
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Each port in the port mask is configured and a corresponding ring is created in the master lcore's array of rings.
-This ring is the first in the pipeline and will hold the packets directly coming from the port.
-
-.. code-block:: c
-
-    for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++)
-        if (is_bit_set(port_id, portmask)) {
-            configure_eth_port(port_id);
-            init_ring(master_lcore_id, port_id);
-        }
-
-    pair_ports();
-
-The configure_eth_port() and init_ring() functions are used to configure a port and a ring respectively and are defined in init.c.
-They make use of the DPDK APIs defined in rte_eth.h and rte_ring.h.
-
-pair_ports() builds the port_pairs[] array so that its key-value pairs are a mapping between reception and transmission ports.
-It is defined in init.c.
-
-Logical Cores Assignment
-^^^^^^^^^^^^^^^^^^^^^^^^
-
-The application uses the master logical core to poll all the ports for new packets and enqueue them on a ring associated with the port.
-
-Each logical core except the last runs pipeline_stage() after a ring for each used port is initialized on that core.
-pipeline_stage() on core X dequeues packets from core X-1's rings and enqueue them on its own rings. See :numref:`figure_threads_pipelines`.
-
-.. code-block:: c
-
-    /* Start pipeline_stage() on all the available slave lcore but the last */
-
-    for (lcore_id = 0 ; lcore_id < last_lcore_id; lcore_id++) {
-        if (rte_lcore_is_enabled(lcore_id) && lcore_id != master_lcore_id) {
-            for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++)
-                if (is_bit_set(port_id, portmask))
-                    init_ring(lcore_id, port_id);
-
-                rte_eal_remote_launch(pipeline_stage, NULL, lcore_id);
-        }
-    }
-
-The last available logical core runs send_stage(),
-which is the last stage of the pipeline dequeuing packets from the last ring in the pipeline and
-sending them out on the destination port setup by pair_ports().
-
-.. code-block:: c
-
-    /* Start send_stage() on the last slave core */
-
-    rte_eal_remote_launch(send_stage, NULL, last_lcore_id);
-
-Receive, Process and Transmit Packets
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-.. _figure_threads_pipelines:
-
-.. figure:: img/threads_pipelines.*
-
-   Threads and Pipelines
-
-
-In the receive_stage() function running on the master logical core,
-the main task is to read ingress packets from the RX ports and enqueue them
-on the port's corresponding first ring in the pipeline.
-This is done using the following code:
-
-.. code-block:: c
-
-    lcore_id = rte_lcore_id();
-
-    /* Process each port round robin style */
-
-    for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++) {
-            if (!is_bit_set(port_id, portmask))
-                    continue;
-
-            ring = rings[lcore_id][port_id];
-
-            if (ring_state[port_id] != RING_READY) {
-                    if (rte_ring_count(ring) > *low_watermark)
-                            continue;
-                    else
-                            ring_state[port_id] = RING_READY;
-            }
-
-            /* Enqueue received packets on the RX ring */
-            nb_rx_pkts = rte_eth_rx_burst(port_id, 0, pkts,
-                            (uint16_t) *quota);
-            ret = rte_ring_enqueue_bulk(ring, (void *) pkts,
-                            nb_rx_pkts, &free);
-            if (RING_SIZE - free > *high_watermark) {
-                    ring_state[port_id] = RING_OVERLOADED;
-                    send_pause_frame(port_id, 1337);
-            }
-
-            if (ret == 0) {
-
-                    /*
-                     * Return  mbufs to the pool,
-                     * effectively dropping packets
-                     */
-                    for (i = 0; i < nb_rx_pkts; i++)
-                            rte_pktmbuf_free(pkts[i]);
-            }
-    }
-
-For each port in the port mask, the corresponding ring's pointer is fetched into ring and that ring's state is checked:
-
-*   If it is in the RING_READY state, \*quota packets are grabbed from the port and put on the ring.
-    Should this operation make the ring's usage cross its high watermark,
-    the ring is marked as overloaded and an Ethernet flow control frame is sent to the source.
-
-*   If it is not in the RING_READY state, this port is ignored until the ring's usage crosses the \*low_watermark  value.
-
-The pipeline_stage() function's task is to process and move packets from the preceding pipeline stage.
-This thread is running on most of the logical cores to create and arbitrarily long pipeline.
-
-.. code-block:: c
-
-    lcore_id = rte_lcore_id();
-
-    previous_lcore_id = get_previous_lcore_id(lcore_id);
-
-    for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++) {
-            if (!is_bit_set(port_id, portmask))
-                    continue;
-
-            tx = rings[lcore_id][port_id];
-            rx = rings[previous_lcore_id][port_id];
-
-            if (ring_state[port_id] != RING_READY) {
-                    if (rte_ring_count(tx) > *low_watermark)
-                            continue;
-                    else
-                            ring_state[port_id] = RING_READY;
-            }
-
-            /* Dequeue up to quota mbuf from rx */
-            nb_dq_pkts = rte_ring_dequeue_burst(rx, pkts,
-                            *quota, NULL);
-            if (unlikely(nb_dq_pkts < 0))
-                    continue;
-
-            /* Enqueue them on tx */
-            ret = rte_ring_enqueue_bulk(tx, pkts,
-                            nb_dq_pkts, &free);
-            if (RING_SIZE - free > *high_watermark)
-                    ring_state[port_id] = RING_OVERLOADED;
-
-            if (ret == 0) {
-
-                    /*
-                     * Return  mbufs to the pool,
-                     * effectively dropping packets
-                     */
-                    for (i = 0; i < nb_dq_pkts; i++)
-                            rte_pktmbuf_free(pkts[i]);
-            }
-    }
-
-The thread's logic works mostly like receive_stage(),
-except that packets are moved from ring to ring instead of port to ring.
-
-In this example, no actual processing is done on the packets,
-but pipeline_stage() is an ideal place to perform any processing required by the application.
-
-Finally, the send_stage() function's task is to read packets from the last ring in a pipeline and
-send them on the destination port defined in the port_pairs[] array.
-It is running on the last available logical core only.
-
-.. code-block:: c
-
-    lcore_id = rte_lcore_id();
-
-    previous_lcore_id = get_previous_lcore_id(lcore_id);
-
-    for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++) {
-        if (!is_bit_set(port_id, portmask)) continue;
-
-        dest_port_id = port_pairs[port_id];
-        tx = rings[previous_lcore_id][port_id];
-
-        if (rte_ring_empty(tx)) continue;
-
-        /* Dequeue packets from tx and send them */
-
-        nb_dq_pkts = rte_ring_dequeue_burst(tx, (void *) tx_pkts, *quota);
-        nb_tx_pkts = rte_eth_tx_burst(dest_port_id, 0, tx_pkts, nb_dq_pkts);
-    }
-
-For each port in the port mask, up to \*quota packets are pulled from the last ring in its pipeline and
-sent on the destination port paired with the current port.
-
-Control Application - qwctl
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-The qwctl application uses the rte_cmdline library to provide the user with an interactive command line that
-can be used to modify and inspect parameters in a running qw application.
-Those parameters are the global quota and low_watermark value as well as each ring's built-in high watermark.
-
-Command Definitions
-^^^^^^^^^^^^^^^^^^^
-
-The available commands are defined in commands.c.
-
-It is advised to use the cmdline sample application user guide as a reference for everything related to the rte_cmdline library.
-
-Accessing Shared Variables
-^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-The setup_shared_variables() function retrieves the shared variables quota and
-low_watermark from the rte_memzone previously created by qw.
-
-.. code-block:: c
-
-    static void
-    setup_shared_variables(void)
-    {
-        const struct rte_memzone *qw_memzone;
-
-        qw_memzone = rte_memzone_lookup(QUOTA_WATERMARK_MEMZONE_NAME);
-        if (qw_memzone == NULL)
-            rte_exit(EXIT_FAILURE, "Couldn't find memzone\n");
-
-        quota = qw_memzone->addr;
-
-        low_watermark = (unsigned int *) qw_memzone->addr + 1;
-        high_watermark = (unsigned int *) qw_memzone->addr + 2;
-    }
diff --git a/examples/Makefile b/examples/Makefile
index 5dd8a72e5..02ff86534 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -59,7 +59,6 @@ endif
 DIRS-$(CONFIG_RTE_LIBRTE_IEEE1588) += ptpclient
 DIRS-$(CONFIG_RTE_LIBRTE_METER) += qos_meter
 DIRS-$(CONFIG_RTE_LIBRTE_SCHED) += qos_sched
-DIRS-y += quota_watermark
 DIRS-$(CONFIG_RTE_ETHDEV_RXTX_CALLBACKS) += rxtx_callbacks
 DIRS-y += service_cores
 DIRS-y += skeleton
diff --git a/examples/meson.build b/examples/meson.build
index 81ac8199a..6c26fffb4 100644
--- a/examples/meson.build
+++ b/examples/meson.build
@@ -33,7 +33,7 @@ all_examples = [
 	'netmap_compat', 'ntb', 'packet_ordering',
 	'performance-thread', 'ptpclient',
 	'qos_meter', 'qos_sched',
-	'quota_watermark', 'rxtx_callbacks',
+	'rxtx_callbacks',
 	'server_node_efd', 'service_cores',
 	'skeleton', 'tep_termination',
 	'timer', 'vdpa',
diff --git a/examples/quota_watermark/Makefile b/examples/quota_watermark/Makefile
deleted file mode 100644
index 8ef053198..000000000
--- a/examples/quota_watermark/Makefile
+++ /dev/null
@@ -1,16 +0,0 @@
-# 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) += qw
-DIRS-$(CONFIG_RTE_EXEC_ENV_LINUX) += qwctl
-
-include $(RTE_SDK)/mk/rte.extsubdir.mk
diff --git a/examples/quota_watermark/include/conf.h b/examples/quota_watermark/include/conf.h
deleted file mode 100644
index 4f29aa64b..000000000
--- a/examples/quota_watermark/include/conf.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#ifndef _CONF_H_
-#define _CONF_H_
-
-#define RING_SIZE 1024
-#define MAX_PKT_QUOTA 64
-
-#define RX_DESC_PER_QUEUE   1024
-#define TX_DESC_PER_QUEUE   1024
-
-#define MBUF_DATA_SIZE     RTE_MBUF_DEFAULT_BUF_SIZE
-#define MBUF_PER_POOL 8192
-
-#define QUOTA_WATERMARK_MEMZONE_NAME "qw_global_vars"
-
-#endif /* _CONF_H_ */
diff --git a/examples/quota_watermark/meson.build b/examples/quota_watermark/meson.build
deleted file mode 100644
index c370d7476..000000000
--- a/examples/quota_watermark/meson.build
+++ /dev/null
@@ -1,10 +0,0 @@
-# SPDX-License-Identifier: BSD-3-Clause
-# Copyright(c) 2018 Intel Corporation
-
-# meson file, for building this example as part of a main DPDK build.
-#
-# To build this example as a standalone application with an already-installed
-# DPDK instance, use 'make'
-
-# Example app currently unsupported by meson build
-build = false
diff --git a/examples/quota_watermark/qw/Makefile b/examples/quota_watermark/qw/Makefile
deleted file mode 100644
index 3f10f01c3..000000000
--- a/examples/quota_watermark/qw/Makefile
+++ /dev/null
@@ -1,22 +0,0 @@
-# SPDX-License-Identifier: BSD-3-Clause
-# Copyright(c) 2010-2014 Intel Corporation
-
-ifeq ($(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 = qw
-
-# all source are stored in SRCS-y
-SRCS-y := args.c init.c main.c
-
-CFLAGS += -O3 -DQW_SOFTWARE_FC
-CFLAGS += $(WERROR_FLAGS)
-
-include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/examples/quota_watermark/qw/args.c b/examples/quota_watermark/qw/args.c
deleted file mode 100644
index a750ec258..000000000
--- a/examples/quota_watermark/qw/args.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include <rte_common.h>
-#include <rte_lcore.h>
-
-#include "args.h"
-
-
-unsigned int portmask = 0;
-
-
-static void
-usage(const char *prgname)
-{
-	fprintf(stderr, "Usage: %s [EAL args] -- -p <portmask>\n"
-			"-p PORTMASK: hexadecimal bitmask of NIC ports to configure\n",
-			prgname);
-}
-
-static unsigned long
-parse_portmask(const char *portmask_str)
-{
-	return strtoul(portmask_str, NULL, 16);
-}
-
-static void
-check_core_count(void)
-{
-	if (rte_lcore_count() < 3)
-		rte_exit(EXIT_FAILURE,
-				"At least 3 cores need to be passed in the coremask\n");
-}
-
-static void
-check_portmask_value(unsigned int portmask)
-{
-	unsigned int port_nb = 0;
-
-	port_nb = __builtin_popcount(portmask);
-
-	if (port_nb == 0)
-		rte_exit(EXIT_FAILURE,
-				"At least 2 ports need to be passed in the portmask\n");
-
-	if (port_nb % 2 != 0)
-		rte_exit(EXIT_FAILURE,
-				"An even number of ports is required in the portmask\n");
-}
-
-int
-parse_qw_args(int argc, char **argv)
-{
-	int opt;
-
-	while ((opt = getopt(argc, argv, "h:p:")) != -1) {
-		switch (opt) {
-		case 'h':
-			usage(argv[0]);
-			break;
-		case 'p':
-			portmask = parse_portmask(optarg);
-			break;
-		default:
-			usage(argv[0]);
-		}
-	}
-
-	check_core_count();
-	check_portmask_value(portmask);
-
-	return 0;
-}
diff --git a/examples/quota_watermark/qw/args.h b/examples/quota_watermark/qw/args.h
deleted file mode 100644
index ab777db01..000000000
--- a/examples/quota_watermark/qw/args.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#ifndef _ARGS_H_
-#define _ARGS_H_
-
-extern unsigned int portmask;
-
-int parse_qw_args(int argc, char **argv);
-
-#endif /* _ARGS_H_ */
diff --git a/examples/quota_watermark/qw/init.c b/examples/quota_watermark/qw/init.c
deleted file mode 100644
index 5a0f64f45..000000000
--- a/examples/quota_watermark/qw/init.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/mman.h>
-
-#include <rte_eal.h>
-
-#include <rte_common.h>
-#include <rte_errno.h>
-#include <rte_ethdev.h>
-#include <rte_memzone.h>
-#include <rte_ring.h>
-#include <rte_string_fns.h>
-
-#include "args.h"
-#include "init.h"
-#include "main.h"
-#include "../include/conf.h"
-
-
-static struct rte_eth_conf port_conf = {
-		.rxmode = {
-			.split_hdr_size = 0,
-		},
-		.txmode = {
-			.mq_mode = ETH_DCB_NONE,
-		},
-};
-
-static struct rte_eth_fc_conf fc_conf = {
-		.mode       = RTE_FC_TX_PAUSE,
-		.high_water = 80 * 510 / 100,
-		.low_water  = 60 * 510 / 100,
-		.pause_time = 1337,
-		.send_xon   = 0,
-};
-
-
-void configure_eth_port(uint16_t port_id)
-{
-	int ret;
-	uint16_t nb_rxd = RX_DESC_PER_QUEUE;
-	uint16_t nb_txd = TX_DESC_PER_QUEUE;
-	struct rte_eth_rxconf rxq_conf;
-	struct rte_eth_txconf txq_conf;
-	struct rte_eth_dev_info dev_info;
-	struct rte_eth_conf local_port_conf = port_conf;
-
-	rte_eth_dev_stop(port_id);
-
-	rte_eth_dev_info_get(port_id, &dev_info);
-	if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
-		local_port_conf.txmode.offloads |=
-			DEV_TX_OFFLOAD_MBUF_FAST_FREE;
-	ret = rte_eth_dev_configure(port_id, 1, 1, &local_port_conf);
-	if (ret < 0)
-		rte_exit(EXIT_FAILURE, "Cannot configure port %u (error %d)\n",
-				(unsigned int) port_id, ret);
-
-	ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, &nb_txd);
-	if (ret < 0)
-		rte_exit(EXIT_FAILURE,
-				"Cannot adjust number of descriptors for port %u (error %d)\n",
-				(unsigned int) port_id, ret);
-
-	/* Initialize the port's RX queue */
-	rxq_conf = dev_info.default_rxconf;
-	rxq_conf.offloads = local_port_conf.rxmode.offloads;
-	ret = rte_eth_rx_queue_setup(port_id, 0, nb_rxd,
-			rte_eth_dev_socket_id(port_id),
-			&rxq_conf,
-			mbuf_pool);
-	if (ret < 0)
-		rte_exit(EXIT_FAILURE,
-				"Failed to setup RX queue on port %u (error %d)\n",
-				(unsigned int) port_id, ret);
-
-	/* Initialize the port's TX queue */
-	txq_conf = dev_info.default_txconf;
-	txq_conf.offloads = local_port_conf.txmode.offloads;
-	ret = rte_eth_tx_queue_setup(port_id, 0, nb_txd,
-			rte_eth_dev_socket_id(port_id),
-			&txq_conf);
-	if (ret < 0)
-		rte_exit(EXIT_FAILURE,
-				"Failed to setup TX queue on port %u (error %d)\n",
-				(unsigned int) port_id, ret);
-
-	/* Initialize the port's flow control */
-	ret = rte_eth_dev_flow_ctrl_set(port_id, &fc_conf);
-	if (ret < 0)
-		rte_exit(EXIT_FAILURE,
-				"Failed to setup hardware flow control on port %u (error %d)\n",
-				(unsigned int) port_id, ret);
-
-	/* Start the port */
-	ret = rte_eth_dev_start(port_id);
-	if (ret < 0)
-		rte_exit(EXIT_FAILURE, "Failed to start port %u (error %d)\n",
-				(unsigned int) port_id, ret);
-
-	/* Put it in promiscuous mode */
-	rte_eth_promiscuous_enable(port_id);
-}
-
-void
-init_dpdk(void)
-{
-	if (rte_eth_dev_count_avail() < 2)
-		rte_exit(EXIT_FAILURE, "Not enough ethernet port available\n");
-}
-
-void init_ring(int lcore_id, uint16_t port_id)
-{
-	struct rte_ring *ring;
-	char ring_name[RTE_RING_NAMESIZE];
-
-	snprintf(ring_name, RTE_RING_NAMESIZE,
-			"core%d_port%d", lcore_id, port_id);
-	ring = rte_ring_create(ring_name, RING_SIZE, rte_socket_id(),
-			RING_F_SP_ENQ | RING_F_SC_DEQ);
-
-	if (ring == NULL)
-		rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
-
-	*high_watermark = 80 * RING_SIZE / 100;
-
-	rings[lcore_id][port_id] = ring;
-}
-
-void
-pair_ports(void)
-{
-	uint16_t i, j;
-
-	/* Pair ports with their "closest neighbour" in the portmask */
-	for (i = 0; i < RTE_MAX_ETHPORTS; i++)
-		if (is_bit_set(i, portmask))
-			for (j = i + 1; j < RTE_MAX_ETHPORTS; j++)
-				if (is_bit_set(j, portmask)) {
-					port_pairs[i] = j;
-					port_pairs[j] = i;
-					i = j;
-					break;
-				}
-}
-
-void
-setup_shared_variables(void)
-{
-	const struct rte_memzone *qw_memzone;
-
-	qw_memzone = rte_memzone_reserve(QUOTA_WATERMARK_MEMZONE_NAME,
-			3 * sizeof(int), rte_socket_id(), 0);
-	if (qw_memzone == NULL)
-		rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
-
-	quota = qw_memzone->addr;
-	low_watermark = (unsigned int *) qw_memzone->addr + 1;
-	high_watermark = (unsigned int *) qw_memzone->addr + 2;
-}
diff --git a/examples/quota_watermark/qw/init.h b/examples/quota_watermark/qw/init.h
deleted file mode 100644
index e0c90df72..000000000
--- a/examples/quota_watermark/qw/init.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#ifndef _INIT_H_
-#define _INIT_H_
-
-void configure_eth_port(uint16_t port_id);
-void init_dpdk(void);
-void init_ring(int lcore_id, uint16_t port_id);
-void pair_ports(void);
-void setup_shared_variables(void);
-
-#endif /* _INIT_H_ */
diff --git a/examples/quota_watermark/qw/main.c b/examples/quota_watermark/qw/main.c
deleted file mode 100644
index a61360b99..000000000
--- a/examples/quota_watermark/qw/main.c
+++ /dev/null
@@ -1,365 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#include <rte_eal.h>
-
-#include <rte_common.h>
-#include <rte_debug.h>
-#include <rte_errno.h>
-#include <rte_ethdev.h>
-#include <rte_launch.h>
-#include <rte_lcore.h>
-#include <rte_log.h>
-#include <rte_mbuf.h>
-#include <rte_ring.h>
-
-#include <rte_byteorder.h>
-
-#include "args.h"
-#include "main.h"
-#include "init.h"
-#include "../include/conf.h"
-
-
-#ifdef QW_SOFTWARE_FC
-#define SEND_PAUSE_FRAME(port_id, duration) send_pause_frame(port_id, duration)
-#else
-#define SEND_PAUSE_FRAME(port_id, duration) do { } while(0)
-#endif
-
-#define ETHER_TYPE_FLOW_CONTROL 0x8808
-
-struct ether_fc_frame {
-	uint16_t opcode;
-	uint16_t param;
-} __attribute__((__packed__));
-
-
-int *quota;
-unsigned int *low_watermark;
-unsigned int *high_watermark;
-
-uint16_t port_pairs[RTE_MAX_ETHPORTS];
-
-struct rte_ring *rings[RTE_MAX_LCORE][RTE_MAX_ETHPORTS];
-struct rte_mempool *mbuf_pool;
-
-
-static void send_pause_frame(uint16_t port_id, uint16_t duration)
-{
-	struct rte_mbuf *mbuf;
-	struct ether_fc_frame *pause_frame;
-	struct rte_ether_hdr *hdr;
-	struct rte_ether_addr mac_addr;
-
-	RTE_LOG_DP(DEBUG, USER1,
-			"Sending PAUSE frame (duration=%d) on port %d\n",
-			duration, port_id);
-
-	/* Get a mbuf from the pool */
-	mbuf = rte_pktmbuf_alloc(mbuf_pool);
-	if (unlikely(mbuf == NULL))
-		return;
-
-	/* Prepare a PAUSE frame */
-	hdr = rte_pktmbuf_mtod(mbuf, struct rte_ether_hdr *);
-	pause_frame = (struct ether_fc_frame *) &hdr[1];
-
-	rte_eth_macaddr_get(port_id, &mac_addr);
-	rte_ether_addr_copy(&mac_addr, &hdr->s_addr);
-
-	void *tmp = &hdr->d_addr.addr_bytes[0];
-	*((uint64_t *)tmp) = 0x010000C28001ULL;
-
-	hdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_FLOW_CONTROL);
-
-	pause_frame->opcode = rte_cpu_to_be_16(0x0001);
-	pause_frame->param  = rte_cpu_to_be_16(duration);
-
-	mbuf->pkt_len  = 60;
-	mbuf->data_len = 60;
-
-	rte_eth_tx_burst(port_id, 0, &mbuf, 1);
-}
-
-/**
- * Get the previous enabled lcore ID
- *
- * @param lcore_id
- *   The current lcore ID.
- * @return
- *   The previous enabled lcore_id or -1 if not found.
- */
-static unsigned int
-get_previous_lcore_id(unsigned int lcore_id)
-{
-	int i;
-
-	for (i = lcore_id - 1; i >= 0; i--)
-		if (rte_lcore_is_enabled(i))
-			return i;
-
-	return -1;
-}
-
-/**
- * Get the last enabled lcore ID
- *
- * @return
- *   The last enabled lcore_id.
- */
-static unsigned int
-get_last_lcore_id(void)
-{
-	int i;
-
-	for (i = RTE_MAX_LCORE; i >= 0; i--)
-		if (rte_lcore_is_enabled(i))
-			return i;
-
-	return 0;
-}
-
-static void
-receive_stage(__attribute__((unused)) void *args)
-{
-	int i, ret;
-
-	uint16_t port_id;
-	uint16_t nb_rx_pkts;
-
-	unsigned int lcore_id;
-	unsigned int free;
-
-	struct rte_mbuf *pkts[MAX_PKT_QUOTA];
-	struct rte_ring *ring;
-	enum ring_state ring_state[RTE_MAX_ETHPORTS] = { RING_READY };
-
-	lcore_id = rte_lcore_id();
-
-	RTE_LOG(INFO, USER1,
-			"%s() started on core %u\n", __func__, lcore_id);
-
-	while (1) {
-
-		/* Process each port round robin style */
-		for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++) {
-
-			if (!is_bit_set(port_id, portmask))
-				continue;
-
-			ring = rings[lcore_id][port_id];
-
-			if (ring_state[port_id] != RING_READY) {
-				if (rte_ring_count(ring) > *low_watermark)
-					continue;
-				else
-					ring_state[port_id] = RING_READY;
-			}
-
-			/* Enqueue received packets on the RX ring */
-			nb_rx_pkts = rte_eth_rx_burst(port_id, 0, pkts,
-					(uint16_t) *quota);
-			ret = rte_ring_enqueue_bulk(ring, (void *) pkts,
-					nb_rx_pkts, &free);
-			if (RING_SIZE - free > *high_watermark) {
-				ring_state[port_id] = RING_OVERLOADED;
-				send_pause_frame(port_id, 1337);
-			}
-
-			if (ret == 0) {
-
-				/*
-				 * Return  mbufs to the pool,
-				 * effectively dropping packets
-				 */
-				for (i = 0; i < nb_rx_pkts; i++)
-					rte_pktmbuf_free(pkts[i]);
-			}
-		}
-	}
-}
-
-static int
-pipeline_stage(__attribute__((unused)) void *args)
-{
-	int i, ret;
-	int nb_dq_pkts;
-
-	uint16_t port_id;
-
-	unsigned int lcore_id, previous_lcore_id;
-	unsigned int free;
-
-	void *pkts[MAX_PKT_QUOTA];
-	struct rte_ring *rx, *tx;
-	enum ring_state ring_state[RTE_MAX_ETHPORTS] = { RING_READY };
-
-	lcore_id = rte_lcore_id();
-	previous_lcore_id = get_previous_lcore_id(lcore_id);
-
-	RTE_LOG(INFO, USER1,
-			"%s() started on core %u - processing packets from core %u\n",
-			__func__, lcore_id, previous_lcore_id);
-
-	while (1) {
-
-		for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++) {
-
-			if (!is_bit_set(port_id, portmask))
-				continue;
-
-			tx = rings[lcore_id][port_id];
-			rx = rings[previous_lcore_id][port_id];
-
-			if (ring_state[port_id] != RING_READY) {
-				if (rte_ring_count(tx) > *low_watermark)
-					continue;
-				else
-					ring_state[port_id] = RING_READY;
-			}
-
-			/* Dequeue up to quota mbuf from rx */
-			nb_dq_pkts = rte_ring_dequeue_burst(rx, pkts,
-					*quota, NULL);
-			if (unlikely(nb_dq_pkts < 0))
-				continue;
-
-			/* Enqueue them on tx */
-			ret = rte_ring_enqueue_bulk(tx, pkts,
-					nb_dq_pkts, &free);
-			if (RING_SIZE - free > *high_watermark)
-				ring_state[port_id] = RING_OVERLOADED;
-
-			if (ret == 0) {
-
-				/*
-				 * Return  mbufs to the pool,
-				 * effectively dropping packets
-				 */
-				for (i = 0; i < nb_dq_pkts; i++)
-					rte_pktmbuf_free(pkts[i]);
-			}
-		}
-	}
-
-	return 0;
-}
-
-static int
-send_stage(__attribute__((unused)) void *args)
-{
-	uint16_t nb_dq_pkts;
-
-	uint16_t port_id;
-	uint16_t dest_port_id;
-
-	unsigned int lcore_id, previous_lcore_id;
-
-	struct rte_ring *tx;
-	struct rte_mbuf *tx_pkts[MAX_PKT_QUOTA];
-
-	lcore_id = rte_lcore_id();
-	previous_lcore_id = get_previous_lcore_id(lcore_id);
-
-	RTE_LOG(INFO, USER1,
-			"%s() started on core %u - processing packets from core %u\n",
-			__func__, lcore_id, previous_lcore_id);
-
-	while (1) {
-
-		/* Process each ring round robin style */
-		for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++) {
-
-			if (!is_bit_set(port_id, portmask))
-				continue;
-
-			dest_port_id = port_pairs[port_id];
-			tx = rings[previous_lcore_id][port_id];
-
-			if (rte_ring_empty(tx))
-				continue;
-
-			/* Dequeue packets from tx and send them */
-			nb_dq_pkts = (uint16_t) rte_ring_dequeue_burst(tx,
-					(void *) tx_pkts, *quota, NULL);
-			rte_eth_tx_burst(dest_port_id, 0, tx_pkts, nb_dq_pkts);
-
-			/* TODO: Check if nb_dq_pkts == nb_tx_pkts? */
-		}
-	}
-
-	return 0;
-}
-
-int
-main(int argc, char **argv)
-{
-	int ret;
-	unsigned int lcore_id, master_lcore_id, last_lcore_id;
-
-	uint16_t port_id;
-
-	rte_log_set_global_level(RTE_LOG_INFO);
-
-	ret = rte_eal_init(argc, argv);
-	if (ret < 0)
-		rte_exit(EXIT_FAILURE, "Cannot initialize EAL\n");
-
-	argc -= ret;
-	argv += ret;
-
-	init_dpdk();
-	setup_shared_variables();
-
-	*quota = 32;
-	*low_watermark = 60 * RING_SIZE / 100;
-
-	last_lcore_id   = get_last_lcore_id();
-	master_lcore_id = rte_get_master_lcore();
-
-	/* Parse the application's arguments */
-	ret = parse_qw_args(argc, argv);
-	if (ret < 0)
-		rte_exit(EXIT_FAILURE, "Invalid quota/watermark argument(s)\n");
-
-	/* Create a pool of mbuf to store packets */
-	mbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", MBUF_PER_POOL, 32, 0,
-			MBUF_DATA_SIZE, rte_socket_id());
-	if (mbuf_pool == NULL)
-		rte_panic("%s\n", rte_strerror(rte_errno));
-
-	for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++)
-		if (is_bit_set(port_id, portmask)) {
-			configure_eth_port(port_id);
-			init_ring(master_lcore_id, port_id);
-		}
-
-	pair_ports();
-
-	/*
-	 * Start pipeline_connect() on all the available slave lcores
-	 * but the last
-	 */
-	for (lcore_id = 0 ; lcore_id < last_lcore_id; lcore_id++) {
-		if (rte_lcore_is_enabled(lcore_id) &&
-				lcore_id != master_lcore_id) {
-
-			for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++)
-				if (is_bit_set(port_id, portmask))
-					init_ring(lcore_id, port_id);
-
-			rte_eal_remote_launch(pipeline_stage,
-					NULL, lcore_id);
-		}
-	}
-
-	/* Start send_stage() on the last slave core */
-	rte_eal_remote_launch(send_stage, NULL, last_lcore_id);
-
-	/* Start receive_stage() on the master core */
-	receive_stage(NULL);
-
-	return 0;
-}
diff --git a/examples/quota_watermark/qw/main.h b/examples/quota_watermark/qw/main.h
deleted file mode 100644
index 9903ddc8c..000000000
--- a/examples/quota_watermark/qw/main.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#ifndef _MAIN_H_
-#define _MAIN_H_
-
-#include "../include/conf.h"
-
-enum ring_state {
-	RING_READY,
-	RING_OVERLOADED,
-};
-
-extern int *quota;
-extern unsigned int *low_watermark;
-extern unsigned int *high_watermark;
-
-extern uint16_t port_pairs[RTE_MAX_ETHPORTS];
-
-extern struct rte_ring *rings[RTE_MAX_LCORE][RTE_MAX_ETHPORTS];
-extern struct rte_mempool *mbuf_pool;
-
-
-static inline int
-is_bit_set(int i, unsigned int mask)
-{
-	return (1 << i) & mask;
-}
-
-#endif /* _MAIN_H_ */
diff --git a/examples/quota_watermark/qwctl/Makefile b/examples/quota_watermark/qwctl/Makefile
deleted file mode 100644
index a40f28025..000000000
--- a/examples/quota_watermark/qwctl/Makefile
+++ /dev/null
@@ -1,22 +0,0 @@
-# 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 = qwctl
-
-# all source are stored in SRCS-y
-SRCS-y := commands.c qwctl.c
-
-CFLAGS += -O3
-CFLAGS += $(WERROR_FLAGS)
-
-include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/examples/quota_watermark/qwctl/commands.c b/examples/quota_watermark/qwctl/commands.c
deleted file mode 100644
index a1c646b9f..000000000
--- a/examples/quota_watermark/qwctl/commands.c
+++ /dev/null
@@ -1,196 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#include <stdio.h>
-#include <stdint.h>
-#include <string.h>
-#include <termios.h>
-
-#include <cmdline_rdline.h>
-#include <cmdline_parse.h>
-#include <cmdline_parse_num.h>
-#include <cmdline_parse_string.h>
-#include <cmdline.h>
-
-#include <rte_ring.h>
-
-#include "qwctl.h"
-#include "../include/conf.h"
-
-
-/**
- * help command
- */
-
-struct cmd_help_tokens {
-	cmdline_fixed_string_t verb;
-};
-
-cmdline_parse_token_string_t cmd_help_verb =
-		TOKEN_STRING_INITIALIZER(struct cmd_help_tokens, verb, "help");
-
-static void
-cmd_help_handler(__attribute__((unused)) void *parsed_result,
-		struct cmdline *cl,
-		__attribute__((unused)) void *data)
-{
-	cmdline_printf(cl, "Available commands:\n"
-			"- help\n"
-			"- set  [ring_name|variable] <value>\n"
-			"- show [ring_name|variable]\n"
-			"\n"
-			"Available variables:\n"
-			"- low_watermark\n"
-			"- quota\n"
-			"- ring names follow the core%%u_port%%u format\n");
-}
-
-cmdline_parse_inst_t cmd_help = {
-		.f = cmd_help_handler,
-		.data = NULL,
-		.help_str = "show help",
-		.tokens = {
-				(void *) &cmd_help_verb,
-				NULL,
-		},
-};
-
-
-/**
- * set command
- */
-
-struct cmd_set_tokens {
-	cmdline_fixed_string_t verb;
-	cmdline_fixed_string_t variable;
-	uint32_t value;
-};
-
-cmdline_parse_token_string_t cmd_set_verb =
-		TOKEN_STRING_INITIALIZER(struct cmd_set_tokens, verb, "set");
-
-cmdline_parse_token_string_t cmd_set_variable =
-		TOKEN_STRING_INITIALIZER(struct cmd_set_tokens, variable, NULL);
-
-cmdline_parse_token_num_t cmd_set_value =
-		TOKEN_NUM_INITIALIZER(struct cmd_set_tokens, value, UINT32);
-
-static void
-cmd_set_handler(__attribute__((unused)) void *parsed_result,
-		struct cmdline *cl,
-		__attribute__((unused)) void *data)
-{
-	struct cmd_set_tokens *tokens = parsed_result;
-	struct rte_ring *ring;
-
-	if (!strcmp(tokens->variable, "quota")) {
-
-		if (tokens->value > 0 && tokens->value <= MAX_PKT_QUOTA)
-			*quota = tokens->value;
-		else
-			cmdline_printf(cl, "quota must be between 1 and %u\n",
-					MAX_PKT_QUOTA);
-	}
-
-	else if (!strcmp(tokens->variable, "low_watermark")) {
-
-		if (tokens->value <= 100)
-			*low_watermark = tokens->value * RING_SIZE / 100;
-		else
-			cmdline_printf(cl,
-					"low_watermark must be between 0%% and 100%%\n");
-	}
-
-	else {
-
-		ring = rte_ring_lookup(tokens->variable);
-		if (ring == NULL)
-			cmdline_printf(cl, "Cannot find ring \"%s\"\n",
-					tokens->variable);
-		else
-			if (tokens->value >= *low_watermark * 100 / RING_SIZE
-					&& tokens->value <= 100)
-				*high_watermark = tokens->value *
-						RING_SIZE / 100;
-			else
-				cmdline_printf(cl,
-					"ring high watermark must be between %u%% and 100%%\n",
-					*low_watermark * 100 / RING_SIZE);
-	}
-}
-
-cmdline_parse_inst_t cmd_set = {
-		.f = cmd_set_handler,
-		.data = NULL,
-		.help_str = "Set a variable value",
-		.tokens = {
-				(void *) &cmd_set_verb,
-				(void *) &cmd_set_variable,
-				(void *) &cmd_set_value,
-				NULL,
-		},
-};
-
-
-/**
- * show command
- */
-
-struct cmd_show_tokens {
-	cmdline_fixed_string_t verb;
-	cmdline_fixed_string_t variable;
-};
-
-cmdline_parse_token_string_t cmd_show_verb =
-		TOKEN_STRING_INITIALIZER(struct cmd_show_tokens, verb, "show");
-
-cmdline_parse_token_string_t cmd_show_variable =
-		TOKEN_STRING_INITIALIZER(struct cmd_show_tokens,
-				variable, NULL);
-
-
-static void
-cmd_show_handler(__attribute__((unused)) void *parsed_result,
-		struct cmdline *cl,
-		__attribute__((unused)) void *data)
-{
-	struct cmd_show_tokens *tokens = parsed_result;
-	struct rte_ring *ring;
-
-	if (!strcmp(tokens->variable, "quota"))
-		cmdline_printf(cl, "Global quota: %d\n", *quota);
-
-	else if (!strcmp(tokens->variable, "low_watermark"))
-		cmdline_printf(cl, "Global low_watermark: %u\n",
-				*low_watermark);
-
-	else {
-
-		ring = rte_ring_lookup(tokens->variable);
-		if (ring == NULL)
-			cmdline_printf(cl, "Cannot find ring \"%s\"\n",
-					tokens->variable);
-		else
-			rte_ring_dump(stdout, ring);
-	}
-}
-
-cmdline_parse_inst_t cmd_show = {
-		.f = cmd_show_handler,
-		.data = NULL,
-		.help_str = "Show a variable value",
-		.tokens = {
-				(void *) &cmd_show_verb,
-				(void *) &cmd_show_variable,
-				NULL,
-		},
-};
-
-
-cmdline_parse_ctx_t qwctl_ctx[] = {
-		(cmdline_parse_inst_t *)&cmd_help,
-		(cmdline_parse_inst_t *)&cmd_set,
-		(cmdline_parse_inst_t *)&cmd_show,
-		NULL,
-};
diff --git a/examples/quota_watermark/qwctl/commands.h b/examples/quota_watermark/qwctl/commands.h
deleted file mode 100644
index 4a4e97475..000000000
--- a/examples/quota_watermark/qwctl/commands.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#ifndef _COMMANDS_H_
-#define _COMMANDS_H_
-
-#include <cmdline_parse.h>
-
-extern cmdline_parse_ctx_t qwctl_ctx[];
-
-#endif /* _COMMANDS_H_ */
diff --git a/examples/quota_watermark/qwctl/qwctl.c b/examples/quota_watermark/qwctl/qwctl.c
deleted file mode 100644
index 2f7914c80..000000000
--- a/examples/quota_watermark/qwctl/qwctl.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#include <fcntl.h>
-#include <stdio.h>
-#include <termios.h>
-#include <unistd.h>
-#include <sys/mman.h>
-
-#include <rte_eal.h>
-
-#include <rte_log.h>
-#include <rte_memzone.h>
-
-#include <cmdline_rdline.h>
-#include <cmdline_parse.h>
-#include <cmdline_socket.h>
-#include <cmdline.h>
-
-
-#include "qwctl.h"
-#include "commands.h"
-#include "../include/conf.h"
-
-
-int *quota;
-unsigned int *low_watermark;
-unsigned int *high_watermark;
-
-
-static void
-setup_shared_variables(void)
-{
-	const struct rte_memzone *qw_memzone;
-
-	qw_memzone = rte_memzone_lookup(QUOTA_WATERMARK_MEMZONE_NAME);
-	if (qw_memzone == NULL)
-		rte_exit(EXIT_FAILURE, "Couldn't find memzone\n");
-
-	quota = qw_memzone->addr;
-	low_watermark = (unsigned int *) qw_memzone->addr + 1;
-	high_watermark = (unsigned int *) qw_memzone->addr + 2;
-}
-
-int main(int argc, char **argv)
-{
-	int ret;
-	struct cmdline *cl;
-
-	rte_log_set_global_level(RTE_LOG_INFO);
-
-	ret = rte_eal_init(argc, argv);
-	if (ret < 0)
-		rte_exit(EXIT_FAILURE, "Cannot initialize EAL\n");
-
-	setup_shared_variables();
-
-	cl = cmdline_stdin_new(qwctl_ctx, "qwctl> ");
-	if (cl == NULL)
-		rte_exit(EXIT_FAILURE, "Cannot create cmdline instance\n");
-
-	cmdline_interact(cl);
-	cmdline_stdin_exit(cl);
-
-	return 0;
-}
diff --git a/examples/quota_watermark/qwctl/qwctl.h b/examples/quota_watermark/qwctl/qwctl.h
deleted file mode 100644
index 2a4559388..000000000
--- a/examples/quota_watermark/qwctl/qwctl.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-
-#ifndef _MAIN_H_
-#define _MAIN_H_
-
-extern int *quota;
-extern unsigned int *low_watermark;
-extern unsigned int *high_watermark;
-
-#endif /* _MAIN_H_ */
-- 
2.17.1