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-<?xml version="1.0" encoding="ISO-8859-1"?>
-<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-<chapter id="dpdk">
-  <title>Data Plane Development Kit</title>
-
-  <para>The Intel Data Plane Development Kit (DPDK) is a set of user-space
-  libraries and drivers that provides a programming framework for high-speed
-  packet processing applications. The DPDK includes a number of Poll Mode
-  Drivers that enable direct packet transfer between the physical NIC and
-  user-space without using interrupts, bypassing the Linux kernel network
-  stack entirely.</para>
-
-  <para>In order to take advantage of DPDK, Linux <ulink
-  url="https://www.kernel.org/doc/Documentation/vm/hugetlbpage.txt">huge
-  pages</ulink> must be enabled in the system. The allocation of huge pages
-  should preferably be done at boot time by passing parameters on the kernel
-  command line. Add the following to the kernel boot parameters:</para>
-
-  <programlisting>default_hugepagesz=512MB hugepagesz=512MB hugepages=20</programlisting>
-
-  <para>For DPDK documentation, see <ulink
-  url="http://dpdk.org/doc/guides-17.08/index.html">http://dpdk.org/doc/guides-17.08/index.html</ulink></para>
-
-  <section id="pktgen">
-    <title>Pktgen</title>
-
-    <para>In addition to DPDK, Enea NFV Access includes Pktgen, a software
-    traffic generator that is powered by the DPDK packet processing framework.
-    Pktgen can act as a transmitter or receiver and is capable of generating
-    10Gbit wire rate traffic with 64 byte frames.</para>
-
-    <para>Pktgen is installed in <literal>/usr/share/apps/pktgen/</literal>
-    and needs to be executed from this directory.</para>
-
-    <para>For Pktgen documentation, see <ulink
-    url="http://pktgen-dpdk.readthedocs.io">http://pktgen-dpdk.readthedocs.io</ulink></para>
-  </section>
-
-  <section id="dpdk-setup">
-    <title>DPDK setup instructions</title>
-
-    <para>The following setup instructions apply to both host and
-    guest.</para>
-
-    <orderedlist>
-      <listitem>
-        <para>To make the hugepage memory available for DPDK, it must be
-        mounted:</para>
-
-        <programlisting>mkdir /mnt/huge
-mount -t hugetlbfs nodev /mnt/huge</programlisting>
-      </listitem>
-
-      <listitem>
-        <para>Load the DPDK vfio-pci kernel module:</para>
-
-        <programlisting>modprobe vfio-pci</programlisting>
-      </listitem>
-
-      <listitem>
-        <para>Bind the device to the vfio-pci driver:</para>
-
-        <para><programlisting>dpdk-devbind --bind=vfio-pci &lt;PCI device number&gt;</programlisting>The
-        DPDK provides the dpdk-devbind tool to help bind or unbind devices
-        from specific drivers. See <ulink
-        url="http://dpdk.org/doc/guides-17.08/tools/devbind.html">http://dpdk.org/doc/guides-17.08/tools/devbind.html</ulink>
-        for more information.</para>
-      </listitem>
-
-      <listitem>
-        <para>VFIO-NOMMU needs to be set if run on VM: <programlisting>echo 1 &gt; /sys/module/vfio/parameters/enable_unsafe_noiommu_mode</programlisting></para>
-      </listitem>
-    </orderedlist>
-
-    <para>To print the current status of all known network
-    interfaces:<programlisting>dpdk-devbind --status</programlisting></para>
-
-    <para>At this point the system is ready to run DPDK applications.</para>
-  </section>
-
-  <section id="dpdk-example-test-setup">
-    <title>DPDK example test setup</title>
-
-    <para>This is a simple DPDK test setup using two boards connected
-    back-to-back. One board generates traffic using the Pktgen application,
-    and the other board runs the DPDK testpmd example to forward packets back
-    on the same interface.</para>
-
-    <programlisting>Pktgen [DPDK] - Board 1 PHY &lt;--&gt; Board 2 PHY - [DPDK] testpmd</programlisting>
-
-    <orderedlist>
-      <listitem>
-        <para>Setup DPDK on both boards, following the instructions in <xref
-        linkend="dpdk-setup" />.</para>
-      </listitem>
-
-      <listitem>
-        <para>On board 1, start the Pktgen application:</para>
-
-        <programlisting>cd /usr/share/apps/pktgen/
-./pktgen -v -c 0x7 -n 4 --proc-type auto -d \
-/usr/lib/librte_pmd_thunderx_nicvf.so.1.1 -w &lt;PCI device number&gt; -- -P -m "[1:2].0"</programlisting>
-
-        <para>In the Pktgen console, run:</para>
-
-        <programlisting>start 0</programlisting>
-
-        <para>The Pktgen output will display the traffic configuration and
-        statistics.</para>
-      </listitem>
-
-      <listitem>
-        <para>On board 2, start the testpmd application:</para>
-
-        <programlisting>testpmd -v -c 0x3 -n 4 -d /usr/lib/librte_pmd_thunderx_nicvf.so.1.1 -w &lt;PCI device \
-number&gt; -- -i --disable-hw-vlan-filter  --no-flush-rx --port-topology=chained</programlisting>
-
-        <para>For more information, refer to the testpmd application user
-        guide: <ulink
-        url="http://dpdk.org/doc/guides-17.08/testpmd_app_ug/index.html">http://dpdk.org/doc/guides-17.08/testpmd_app_ug/index.html</ulink>.</para>
-      </listitem>
-    </orderedlist>
-  </section>
-</chapter>
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