From: Carsten Koester <ckoester@cisco.com>
Date: Mon, 13 Jun 2016 10:39:40 +0000 (-0400)
Subject: CSIT-156: DPDK support for Nested VM image
X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=commitdiff_plain;h=bb847371cf77f1fac6579d0444d6168b5b43c2a0

CSIT-156: DPDK support for Nested VM image

Change-Id: Iefa9ec90d1b243c9e1108f63a182c3d9ef6e6474
Signed-off-by: Carsten Koester <ckoester@cisco.com>
---

diff --git a/resources/tools/disk-image-builder/nested/CHANGELOG b/resources/tools/disk-image-builder/nested/CHANGELOG
index 9a0518811d..74dc2201e3 100644
--- a/resources/tools/disk-image-builder/nested/CHANGELOG
+++ b/resources/tools/disk-image-builder/nested/CHANGELOG
@@ -1,3 +1,15 @@
+## [1.3] - 2016-06-12
+
+### Changes
+- Use Glibc instead of uClibc. Required for DPDK.
+- Include buildroot patch for DPDK. Update build.sh
+  script to include that patch.
+- Update Linux kernel config to include UIO support
+
+### Added
+- Python, DPDK to image
+
+
 ## [1.2] - 2016-05-25
 
 ### Changes
diff --git a/resources/tools/disk-image-builder/nested/build.sh b/resources/tools/disk-image-builder/nested/build.sh
index 88b444b67d..9b02cfda87 100755
--- a/resources/tools/disk-image-builder/nested/build.sh
+++ b/resources/tools/disk-image-builder/nested/build.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/sh -e
 
 # Copyright (c) 2016 Cisco and/or its affiliates.
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -67,6 +67,9 @@ set -e
 wget -P ${BUILD_DIR} -N $BUILDROOT_URL
 tar -C ${BUILD_DIR} -xzf ${BUILD_DIR}/$BUILDROOT_TARBALL
 
+# Apply DPDK patch to buildroot. Do not fail if this patch has already been applied.
+patch -N -d ${BUILDROOT_DIR} -p1 < buildroot-patches/dpdk.patch || /bin/true
+
 cp -p buildroot-config $BUILDROOT_DIR/.config
 cp -p kernel-defconfig $BUILDROOT_DIR/kernel-defconfig
 make -C $BUILDROOT_DIR
@@ -124,7 +127,7 @@ sudo tar -C ${MOUNT_TMPDIR} -xf ${BUILDROOT_OUTPUT}
 echo "Applying patches/modifications"
 mydir=$(pwd)
 cd ${MOUNT_TMPDIR}
-sudo run-parts -v  ${mydir}/patches
+sudo run-parts -v  ${mydir}/image-patches
 cd ${mydir}
 
 # Copy version and changelog
diff --git a/resources/tools/disk-image-builder/nested/buildroot-config b/resources/tools/disk-image-builder/nested/buildroot-config
index b909a39270..9151475dc5 100644
--- a/resources/tools/disk-image-builder/nested/buildroot-config
+++ b/resources/tools/disk-image-builder/nested/buildroot-config
@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Buildroot 2016.02 Configuration
+# Buildroot 2016.02-ga74531b-dirty Configuration
 #
 BR2_HAVE_DOT_CONFIG=y
 BR2_HOST_GCC_AT_LEAST_4_7=y
@@ -105,10 +105,10 @@ BR2_STRIP_EXCLUDE_DIRS=""
 # BR2_OPTIMIZE_2 is not set
 # BR2_OPTIMIZE_3 is not set
 BR2_OPTIMIZE_S=y
-
-#
-# Stack Smashing Protection needs a toolchain w/ SSP
-#
+BR2_SSP_NONE=y
+# BR2_SSP_REGULAR is not set
+# BR2_SSP_STRONG is not set
+# BR2_SSP_ALL is not set
 # BR2_STATIC_LIBS is not set
 BR2_SHARED_LIBS=y
 # BR2_SHARED_STATIC_LIBS is not set
@@ -124,7 +124,7 @@ BR2_GLOBAL_PATCH_DIR=""
 # Toolchain
 #
 BR2_TOOLCHAIN=y
-BR2_TOOLCHAIN_USES_UCLIBC=y
+BR2_TOOLCHAIN_USES_GLIBC=y
 BR2_TOOLCHAIN_BUILDROOT=y
 # BR2_TOOLCHAIN_EXTERNAL is not set
 BR2_TOOLCHAIN_BUILDROOT_VENDOR="buildroot"
@@ -144,28 +144,15 @@ BR2_TOOLCHAIN_BUILDROOT_VENDOR="buildroot"
 BR2_KERNEL_HEADERS_4_4=y
 # BR2_KERNEL_HEADERS_VERSION is not set
 BR2_DEFAULT_KERNEL_HEADERS="4.4.3"
-BR2_TOOLCHAIN_BUILDROOT_UCLIBC=y
-# BR2_TOOLCHAIN_BUILDROOT_GLIBC is not set
+# BR2_TOOLCHAIN_BUILDROOT_UCLIBC is not set
+BR2_TOOLCHAIN_BUILDROOT_GLIBC=y
 # BR2_TOOLCHAIN_BUILDROOT_MUSL is not set
-BR2_TOOLCHAIN_BUILDROOT_LIBC="uclibc"
+BR2_TOOLCHAIN_BUILDROOT_LIBC="glibc"
 BR2_PACKAGE_LINUX_HEADERS=y
-BR2_PACKAGE_UCLIBC=y
-
-#
-# uClibc Options
-#
-BR2_UCLIBC_CONFIG="package/uclibc/uClibc-ng.config"
-BR2_UCLIBC_CONFIG_FRAGMENT_FILES=""
-# BR2_TOOLCHAIN_BUILDROOT_INET_RPC is not set
-BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
-# BR2_TOOLCHAIN_BUILDROOT_LOCALE is not set
-# BR2_PTHREADS_NONE is not set
-BR2_PTHREADS_NATIVE=y
-# BR2_PTHREAD_DEBUG is not set
-# BR2_TOOLCHAIN_BUILDROOT_USE_SSP is not set
-BR2_UCLIBC_INSTALL_UTILS=y
-# BR2_UCLIBC_INSTALL_TEST_SUITE is not set
-BR2_UCLIBC_TARGET_ARCH="x86_64"
+BR2_PACKAGE_GLIBC=y
+BR2_GLIBC_VERSION_2_21=y
+# BR2_GLIBC_VERSION_2_22 is not set
+BR2_GLIBC_VERSION_STRING="2.21"
 
 #
 # Binutils Options
@@ -195,12 +182,17 @@ BR2_GCC_ENABLE_TLS=y
 # BR2_GCC_ENABLE_OPENMP is not set
 # BR2_GCC_ENABLE_GRAPHITE is not set
 # BR2_PACKAGE_HOST_GDB is not set
+BR2_TOOLCHAIN_HAS_NATIVE_RPC=y
 BR2_USE_WCHAR=y
+BR2_ENABLE_LOCALE=y
 BR2_TOOLCHAIN_HAS_THREADS=y
+BR2_TOOLCHAIN_HAS_THREADS_DEBUG=y
 BR2_TOOLCHAIN_HAS_THREADS_NPTL=y
 BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS=y
+BR2_TOOLCHAIN_HAS_SSP=y
 # BR2_ENABLE_LOCALE_PURGE is not set
-BR2_NEEDS_GETTEXT=y
+BR2_GENERATE_LOCALE=""
+# BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY is not set
 BR2_USE_MMU=y
 BR2_TARGET_OPTIMIZATION=""
 BR2_TARGET_LDFLAGS=""
@@ -256,10 +248,7 @@ BR2_TARGET_GENERIC_PASSWD_MD5=y
 BR2_TARGET_GENERIC_PASSWD_METHOD="md5"
 BR2_INIT_BUSYBOX=y
 # BR2_INIT_SYSV is not set
-
-#
-# systemd needs (e)glibc toolchain, headers >= 3.10
-#
+# BR2_INIT_SYSTEMD is not set
 # BR2_INIT_NONE is not set
 # BR2_ROOTFS_DEVICE_CREATION_STATIC is not set
 BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_DEVTMPFS=y
@@ -461,10 +450,7 @@ BR2_PACKAGE_MPLAYER_ARCH_SUPPORTS=y
 #
 # Debugging, profiling and benchmark
 #
-
-#
-# blktrace needs a (e)glibc or musl toolchain
-#
+# BR2_PACKAGE_BLKTRACE is not set
 
 #
 # bonnie++ needs a toolchain w/ C++
@@ -479,10 +465,7 @@ BR2_PACKAGE_MPLAYER_ARCH_SUPPORTS=y
 # duma needs a toolchain w/ C++, threads, dynamic library
 #
 # BR2_PACKAGE_FIO is not set
-
-#
-# gdb/gdbserver needs a toolchain w/ threads, threads debug
-#
+# BR2_PACKAGE_GDB is not set
 BR2_PACKAGE_GOOGLE_BREAKPAD_ARCH_SUPPORTS=y
 
 #
@@ -501,10 +484,7 @@ BR2_PACKAGE_GOOGLE_BREAKPAD_ARCH_SUPPORTS=y
 # BR2_PACKAGE_MCELOG is not set
 # BR2_PACKAGE_MEMSTAT is not set
 # BR2_PACKAGE_NETPERF is not set
-
-#
-# netsniff-ng needs an (e)glibc toolchain w/ threads, headers >= 3.0
-#
+# BR2_PACKAGE_NETSNIFF_NG is not set
 
 #
 # oprofile needs a toolchain w/ C++, wchar
@@ -521,10 +501,7 @@ BR2_PACKAGE_GOOGLE_BREAKPAD_ARCH_SUPPORTS=y
 # BR2_PACKAGE_SPIDEV_TEST is not set
 # BR2_PACKAGE_STRACE is not set
 # BR2_PACKAGE_STRESS is not set
-
-#
-# stress-ng needs a glibc toolchain w/ dynamic library, headers >= 3.3
-#
+# BR2_PACKAGE_STRESS_NG is not set
 
 #
 # sysdig needs a toolchain w/ C++, gcc >= 4.7, dynamic library and a Linux kernel to be built
@@ -575,10 +552,7 @@ BR2_PACKAGE_GETTEXT=y
 #
 # Filesystem and flash utilities
 #
-
-#
-# autofs needs a toolchain w/ threads, RPC, dynamic library
-#
+# BR2_PACKAGE_AUTOFS is not set
 # BR2_PACKAGE_BTRFS_PROGS is not set
 # BR2_PACKAGE_CIFS_UTILS is not set
 # BR2_PACKAGE_CPIO is not set
@@ -847,10 +821,7 @@ BR2_PACKAGE_QT5_JSCORE_AVAILABLE=y
 # BR2_PACKAGE_MINICOM is not set
 # BR2_PACKAGE_NANOCOM is not set
 # BR2_PACKAGE_NEARD is not set
-
-#
-# nvidia-driver needs an (e)glibc toolchain
-#
+# BR2_PACKAGE_NVIDIA_DRIVER is not set
 # BR2_PACKAGE_OFONO is not set
 
 #
@@ -945,6 +916,11 @@ BR2_PACKAGE_MONO_ARCH_SUPPORTS=y
 # BR2_PACKAGE_PERL is not set
 # BR2_PACKAGE_PHP is not set
 # BR2_PACKAGE_PYTHON is not set
+# BR2_PACKAGE_PYTHON_PY_ONLY is not set
+# BR2_PACKAGE_PYTHON_PYC_ONLY is not set
+# BR2_PACKAGE_PYTHON_PY_PYC is not set
+# BR2_PACKAGE_PYTHON_UCS2 is not set
+# BR2_PACKAGE_PYTHON_UCS4 is not set
 # BR2_PACKAGE_PYTHON3 is not set
 # BR2_PACKAGE_RUBY is not set
 # BR2_PACKAGE_TCL is not set
@@ -1501,6 +1477,10 @@ BR2_PACKAGE_CANFESTIVAL_ARCH_SUPPORTS=y
 #
 # czmq needs a toolchain w/ C++, wchar, threads
 #
+BR2_PACKAGE_DPDK=y
+BR2_PACKAGE_DPDK_CONFIG="x86_64-native-linuxapp-gcc"
+# BR2_PACKAGE_DPDK_TEST is not set
+BR2_PACKAGE_DPDK_EXAMPLES=y
 
 #
 # filemq needs a toolchain w/ C++, wchar, threads
@@ -1581,10 +1561,7 @@ BR2_PACKAGE_CANFESTIVAL_ARCH_SUPPORTS=y
 # BR2_PACKAGE_LIBWEBSOCKETS is not set
 # BR2_PACKAGE_MONGOOSE is not set
 # BR2_PACKAGE_NEON is not set
-
-#
-# nss-pam-ldapd needs an (e)glibc toolchain
-#
+# BR2_PACKAGE_NSS_PAM_LDAPD is not set
 
 #
 # omniORB needs a toolchain w/ C++, threads
@@ -1629,7 +1606,6 @@ BR2_PACKAGE_CANFESTIVAL_ARCH_SUPPORTS=y
 #
 # BR2_PACKAGE_APR is not set
 # BR2_PACKAGE_APR_UTIL is not set
-# BR2_PACKAGE_ARGP_STANDALONE is not set
 
 #
 # armadillo needs a toolchain w/ C++
@@ -1690,10 +1666,7 @@ BR2_PACKAGE_BOOST_ARCH_SUPPORTS=y
 BR2_PACKAGE_LIBATOMIC_OPS_ARCH_SUPPORTS=y
 # BR2_PACKAGE_LIBATOMIC_OPS is not set
 BR2_PACKAGE_LIBBSD_ARCH_SUPPORTS=y
-
-#
-# libbsd needs an (e)glibc toolchain w/ threads
-#
+# BR2_PACKAGE_LIBBSD is not set
 # BR2_PACKAGE_LIBCAP is not set
 # BR2_PACKAGE_LIBCAP_NG is not set
 
@@ -1745,14 +1718,8 @@ BR2_PACKAGE_LIBURCU_ARCH_SUPPORTS=y
 # BR2_PACKAGE_LIBURCU is not set
 # BR2_PACKAGE_LIBUV is not set
 # BR2_PACKAGE_LIGHTNING is not set
-
-#
-# linux-pam needs a uClibc or (e)glibc toolchain w/ wchar, locale, dynamic library
-#
-
-#
-# liquid-dsp requires a (e)glibc/musl toolchain w/ dynamic library
-#
+# BR2_PACKAGE_LINUX_PAM is not set
+# BR2_PACKAGE_LIQUID_DSP is not set
 # BR2_PACKAGE_LTTNG_LIBUST is not set
 # BR2_PACKAGE_MPC is not set
 # BR2_PACKAGE_MPDECIMAL is not set
@@ -1806,7 +1773,6 @@ BR2_PACKAGE_PROTOBUF_ARCH_SUPPORTS=y
 # BR2_PACKAGE_LIBENCA is not set
 # BR2_PACKAGE_LIBESTR is not set
 # BR2_PACKAGE_LIBFRIBIDI is not set
-BR2_PACKAGE_LIBICONV=y
 # BR2_PACKAGE_LIBUNISTRING is not set
 # BR2_PACKAGE_LINENOISE is not set
 # BR2_PACKAGE_NCURSES is not set
@@ -1894,10 +1860,7 @@ BR2_PACKAGE_QEMU_HAS_EMULS=y
 #
 # BR2_PACKAGE_BIND is not set
 # BR2_PACKAGE_BLUEZ_UTILS is not set
-
-#
-# bluez5-utils needs a glibc or musl toolchain w/ wchar, threads, headers >= 3.4, dynamic library
-#
+# BR2_PACKAGE_BLUEZ5_UTILS is not set
 # BR2_PACKAGE_BMON is not set
 # BR2_PACKAGE_BOA is not set
 BR2_PACKAGE_BRIDGE_UTILS=y
@@ -2046,10 +2009,7 @@ BR2_PACKAGE_OPENSSH=y
 # BR2_PACKAGE_OPENVPN is not set
 # BR2_PACKAGE_P910ND is not set
 # BR2_PACKAGE_PHIDGETWEBSERVICE is not set
-
-#
-# portmap needs a toolchain w/ RPC
-#
+# BR2_PACKAGE_PORTMAP is not set
 # BR2_PACKAGE_PPPD is not set
 # BR2_PACKAGE_PPTP_LINUX is not set
 # BR2_PACKAGE_PROFTPD is not set
@@ -2067,10 +2027,7 @@ BR2_PACKAGE_OPENSSH=y
 # rtorrent needs a toolchain w/ C++, threads, wchar
 #
 # BR2_PACKAGE_RTPTOOLS is not set
-
-#
-# samba4 needs a toolchain w/ RPC, wchar, dynamic library, threads
-#
+# BR2_PACKAGE_SAMBA4 is not set
 
 #
 # sconeserver needs a toolchain w/ C++, NPTL
@@ -2243,10 +2200,7 @@ BR2_PACKAGE_INITSCRIPTS=y
 # BR2_PACKAGE_IRQBALANCE is not set
 # BR2_PACKAGE_KEYUTILS is not set
 # BR2_PACKAGE_KMOD is not set
-
-#
-# kvmtool needs a (e)glibc or musl toolchain
-#
+# BR2_PACKAGE_KVMTOOL is not set
 # BR2_PACKAGE_LXC is not set
 # BR2_PACKAGE_MONIT is not set
 # BR2_PACKAGE_NCDU is not set
@@ -2255,10 +2209,7 @@ BR2_PACKAGE_INITSCRIPTS=y
 #
 # nut needs a toolchain w/ C++
 #
-
-#
-# openvmtools needs an (e)glibc or musl toolchain w/ wchar, threads, RPC, locale
-#
+# BR2_PACKAGE_OPENVMTOOLS is not set
 # BR2_PACKAGE_POLKIT is not set
 # BR2_PACKAGE_PWGEN is not set
 # BR2_PACKAGE_QUOTA is not set
@@ -2271,10 +2222,7 @@ BR2_PACKAGE_INITSCRIPTS=y
 # BR2_PACKAGE_SWUPDATE is not set
 BR2_PACKAGE_SYSTEMD_ARCH_SUPPORTS=y
 # BR2_PACKAGE_TPM_TOOLS is not set
-
-#
-# unscd needs an (e)glibc toolchain
-#
+# BR2_PACKAGE_UNSCD is not set
 # BR2_PACKAGE_UTIL_LINUX is not set
 
 #
diff --git a/resources/tools/disk-image-builder/nested/buildroot-patches/dpdk.patch b/resources/tools/disk-image-builder/nested/buildroot-patches/dpdk.patch
new file mode 100644
index 0000000000..29b8bb8de5
--- /dev/null
+++ b/resources/tools/disk-image-builder/nested/buildroot-patches/dpdk.patch
@@ -0,0 +1,214 @@
+diff --git a/package/Config.in b/package/Config.in
+index 6fc0466..ab38a76 100644
+--- a/package/Config.in
++++ b/package/Config.in
+@@ -1095,6 +1095,7 @@ menu "Networking"
+ 	source "package/cgic/Config.in"
+ 	source "package/cppzmq/Config.in"
+ 	source "package/czmq/Config.in"
++	source "package/dpdk/Config.in"
+ 	source "package/filemq/Config.in"
+ 	source "package/flickcurl/Config.in"
+ 	source "package/fmlib/Config.in"
+diff --git a/package/dpdk/Config.in b/package/dpdk/Config.in
+new file mode 100644
+index 0000000..a42271e
+--- /dev/null
++++ b/package/dpdk/Config.in
+@@ -0,0 +1,54 @@
++config BR2_PACKAGE_DPDK
++       bool "dpdk"
++       depends on (BR2_i386 && !BR2_x86_i386 && !BR2_x86_i486 \
++		      && !BR2_x86_i586 && !BR2_x86_x1000) \
++		  || BR2_x86_64 || BR2_ARM_CPU_ARMV7A || BR2_aarch64 \
++                  || BR2_aarch64_be
++       depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_UCLIBC
++       depends on BR2_TOOLCHAIN_HAS_SYNC_1
++       depends on BR2_TOOLCHAIN_HAS_SYNC_2
++       depends on BR2_TOOLCHAIN_HAS_SYNC_4
++       depends on BR2_TOOLCHAIN_HAS_SYNC_8
++       help
++	 DPDK is a set of libraries and drivers for fast packet processing. It
++	 was designed to run on any processors, however, Intel x86 has been the
++	 first CPU to be supported. Ports for other CPUs like IBM Power 8 and
++	 ARM are under progress. It runs mostly in Linux userland. A FreeBSD
++	 port is now available for a subset of DPDK features.
++
++	 Notes:
++	 * To build the included Linux Kernel drivers, it is necessary to
++	   enable CONFIG_PCI_MSI, CONFIG_UIO.
++	 * To build the PCAP PMD properly, you need to enable the libpcap
++	   manually.
++	 * You may need to install the python2 interpreter if you want to use
++	   scripts dpdk_nic_bind.py and cpu_layout.py
++
++         http://www.dpdk.org/
++
++if BR2_PACKAGE_DPDK
++
++config BR2_PACKAGE_DPDK_CONFIG
++	string "Configuration"
++	default "i686-native-linuxapp-gcc" \
++		if BR2_x86_i686
++	default "x86_64-native-linuxapp-gcc" \
++		if BR2_x86_64
++	default "arm-armv7a-linuxapp-gcc" \
++		if BR2_ARM_CPU_ARMV7A
++	default "arm64-armv8a-linuxapp-gcc" \
++		if BR2_aarch64 || BR2_aarch64_be
++
++config BR2_PACKAGE_DPDK_TEST
++	bool "Install tests suite"
++	select BR2_PACKAGE_PYTHON_PEXPECT if BR2_PACKAGE_PYTHON
++	help
++	  Install all DPDK tests. If you want to run the tests by the included
++	  autotest.py script you need to enable python manually.
++
++config BR2_PACKAGE_DPDK_EXAMPLES
++	bool "Build & install examples"
++	help
++	  Build and install all examples selected by the current configuration.
++
++endif
+diff --git a/package/dpdk/dpdk.hash b/package/dpdk/dpdk.hash
+new file mode 100644
+index 0000000..1c47f19
+--- /dev/null
++++ b/package/dpdk/dpdk.hash
+@@ -0,0 +1,2 @@
++# Locally calculated
++sha256 d631495bc6e8d4c4aec72999ac03c3ce213bb996cb88f3bf14bb980dad1d3f7b  dpdk-16.04.tar.gz
+diff --git a/package/dpdk/dpdk.mk b/package/dpdk/dpdk.mk
+new file mode 100644
+index 0000000..02860fd
+--- /dev/null
++++ b/package/dpdk/dpdk.mk
+@@ -0,0 +1,128 @@
++################################################################################
++#
++# dpdk
++#
++################################################################################
++
++DPDK_VERSION = 16.04
++DPDK_SITE = http://dpdk.org/browse/dpdk/snapshot
++DPDK_SOURCE = dpdk-$(DPDK_VERSION).tar.gz
++
++DPDK_LICENSE = BSD (core), GPLv2+ (Linux drivers)
++DPDK_LICENSE_FILES = GNUmakefile LICENSE.GPL
++DPDK_INSTALL_STAGING = YES
++
++DPDK_DEPENDENCIES += linux
++
++ifeq ($(BR2_PACKAGE_LIBPCAP),y)
++DPDK_DEPENDENCIES += libpcap
++endif
++
++ifeq ($(BR2_SHARED_LIBS),y)
++define DPDK_ENABLE_SHARED_LIBS
++	$(call KCONFIG_ENABLE_OPT,CONFIG_RTE_BUILD_SHARED_LIB,\
++			$(@D)/build/.config)
++endef
++
++DPDK_POST_CONFIGURE_HOOKS += DPDK_ENABLE_SHARED_LIBS
++endif
++
++# We're building a kernel module without using the kernel-module infra,
++# so we need to tell we want module support in the kernel
++ifeq ($(BR2_PACKAGE_DPDK),y)
++LINUX_NEEDS_MODULES = y
++endif
++
++DPDK_CONFIG = $(call qstrip,$(BR2_PACKAGE_DPDK_CONFIG))
++
++ifeq ($(BR2_PACKAGE_DPDK_EXAMPLES),y)
++# Build of DPDK examples is not very straight-forward. It requires to have
++# the SDK and runtime installed on same place to reference it by RTE_SDK.
++# We place it locally in the build directory.
++# In additition, some examples seem to have a dependency on the ethtool
++# example that may not be met when building in parallel for the first
++# time. As a (dirty) workaround, we build twice.
++define DPDK_BUILD_EXAMPLES
++	$(MAKE) -C $(@D) DESTDIR=$(@D)/examples-sdk \
++		CROSS=$(TARGET_CROSS) install-sdk install-runtime
++	$(MAKE) -C $(@D) RTE_KERNELDIR=$(LINUX_DIR) CROSS=$(TARGET_CROSS) \
++		RTE_SDK=$(@D)/examples-sdk/usr/local/share/dpdk \
++		T=$(DPDK_CONFIG) examples || echo "Failed, building again"
++	$(MAKE) -C $(@D) RTE_KERNELDIR=$(LINUX_DIR) CROSS=$(TARGET_CROSS) \
++		RTE_SDK=$(@D)/examples-sdk/usr/local/share/dpdk \
++		T=$(DPDK_CONFIG) examples
++endef
++
++DPDK_EXAMPLES_PATH = $(@D)/examples-sdk/usr/local/share/dpdk/examples
++
++# Installation of examples is not supported in DPDK so we do it explicitly
++# here. As the binaries and libraries do not have a single or regular location
++# where to find them after build, we search for them by find.
++define DPDK_INSTALL_EXAMPLES
++	$(INSTALL) -m 0755 -d $(TARGET_DIR)/usr/local/bin
++	$(INSTALL) -m 0755 -d $(TARGET_DIR)/usr/local/lib
++	for f in `find $(DPDK_EXAMPLES_PATH) -executable -type f   \
++			-name '[a-z]*.so*' | grep '\/lib\/.*'`; do \
++		$(INSTALL) -m 0755 -D $$f                          \
++			$(TARGET_DIR)/usr/local/lib/`basename $$f`;\
++	done
++	for f in `find $(DPDK_EXAMPLES_PATH) -executable -type f   \
++			! -name '*.so*' | grep '\/app\/.*'`; do    \
++		$(INSTALL) -m 0755 -D $$f                          \
++			$(TARGET_DIR)/usr/local/bin/`basename $$f`;\
++	done
++endef
++
++define DPDK_INSTALL_KMOD
++	$(INSTALL) -m 0755 -d $(TARGET_DIR)/usr/local/kmod
++	for f in `find $(@D)/build/kmod -name '*.ko'` ; do 		\
++		$(INSTALL) -m 0755 -D $$f				\
++			$(TARGET_DIR)/usr/local/kmod/`basename $$f`;	\
++	done
++endef
++
++# Build of the power example is broken (at least for 16.04).
++define DPDK_DISABLE_POWER
++	$(call KCONFIG_DISABLE_OPT,CONFIG_RTE_LIBRTE_POWER,\
++			$(@D)/build/.config)
++endef
++
++DPDK_POST_CONFIGURE_HOOKS += DPDK_DISABLE_POWER
++endif
++
++define DPDK_CONFIGURE_CMDS
++	$(MAKE) -C $(@D) T=$(DPDK_CONFIG) RTE_KERNELDIR=$(LINUX_DIR) \
++			   CROSS=$(TARGET_CROSS) config
++endef
++
++define DPDK_BUILD_CMDS
++        $(TARGET_MAKE_ENV) LDFLAGS="$(TARGET_LDFLAGS)" $(MAKE) \
++                DBM_INCLUDE="$(STAGING_DIR)/usr/include" \
++                CCOPTS="$(TARGET_CFLAGS) -D_GNU_SOURCE" \
++                SHARED_LIBS="$(if $(BR2_STATIC_LIBS),n,y)" -C $(@D) \
++                RTE_KERNELDIR=$(LINUX_DIR) CROSS=$(TARGET_CROSS)
++	$(DPDK_BUILD_EXAMPLES)
++endef
++
++define DPDK_INSTALL_STAGING_CMDS
++	$(MAKE) -C $(@D) DESTDIR=$(STAGING_DIR) prefix=/usr \
++		 CROSS=$(TARGET_CROSS) install-sdk
++endef
++
++ifeq ($(BR2_PACKAGE_DPDK_TEST),y)
++define DPDK_INSTALL_TARGET_TEST
++	$(INSTALL) -m 0755 -d $(TARGET_DIR)/usr/dpdk
++	$(INSTALL) -m 0755 -D $(@D)/build/app/test $(TARGET_DIR)/usr/dpdk
++	$(INSTALL) -m 0755 -D $(@D)/app/test/*.py $(TARGET_DIR)/usr/dpdk
++endef
++endif
++
++define DPDK_INSTALL_TARGET_CMDS
++	$(MAKE) -C $(@D) DESTDIR=$(TARGET_DIR) prefix=/usr \
++		CROSS=$(TARGET_CROSS) install-runtime
++        $(DPDK_INSTALL_KMOD)
++	$(DPDK_INSTALL_TARGET_TEST)
++	$(DPDK_INSTALL_EXAMPLES)
++endef
++
++$(eval $(generic-package))
diff --git a/resources/tools/disk-image-builder/nested/patches/01-serial-console b/resources/tools/disk-image-builder/nested/image-patches/01-serial-console
similarity index 100%
rename from resources/tools/disk-image-builder/nested/patches/01-serial-console
rename to resources/tools/disk-image-builder/nested/image-patches/01-serial-console
diff --git a/resources/tools/disk-image-builder/nested/patches/02-users b/resources/tools/disk-image-builder/nested/image-patches/02-users
similarity index 100%
rename from resources/tools/disk-image-builder/nested/patches/02-users
rename to resources/tools/disk-image-builder/nested/image-patches/02-users
diff --git a/resources/tools/disk-image-builder/nested/patches/03-network b/resources/tools/disk-image-builder/nested/image-patches/03-network
similarity index 100%
rename from resources/tools/disk-image-builder/nested/patches/03-network
rename to resources/tools/disk-image-builder/nested/image-patches/03-network
diff --git a/resources/tools/disk-image-builder/nested/patches/04-qemu-ga b/resources/tools/disk-image-builder/nested/image-patches/04-qemu-ga
similarity index 100%
rename from resources/tools/disk-image-builder/nested/patches/04-qemu-ga
rename to resources/tools/disk-image-builder/nested/image-patches/04-qemu-ga
diff --git a/resources/tools/disk-image-builder/nested/patches/05-ssh-hostkeys b/resources/tools/disk-image-builder/nested/image-patches/05-ssh-hostkeys
similarity index 100%
rename from resources/tools/disk-image-builder/nested/patches/05-ssh-hostkeys
rename to resources/tools/disk-image-builder/nested/image-patches/05-ssh-hostkeys
diff --git a/resources/tools/disk-image-builder/nested/image-patches/06-dpdk-support b/resources/tools/disk-image-builder/nested/image-patches/06-dpdk-support
new file mode 100755
index 0000000000..99ac0e14e3
--- /dev/null
+++ b/resources/tools/disk-image-builder/nested/image-patches/06-dpdk-support
@@ -0,0 +1,78 @@
+#!/bin/sh
+
+### This may be a temporary file. Once DPDK is working stable in the nested
+### VM, and if and when ### we decide we want to do all testing with DPDK,
+### the steps executed here may become default configuration for the image.
+###
+### For now, to give us the flexibility to work with and without DPDK, keep
+### this as a separate script.
+
+DPDK_START_FILE="start-testpmd.sh"
+DPDK_STOP_FILE="stop-testpmd.sh"
+
+cat - > ${DPDK_START_FILE} <<"_EOF"
+#!/bin/sh
+
+TARGET_DRIVER="igb_uio"
+PATH_TO_IGB_UIO_MODULE="/usr/local/kmod/igb_uio.ko"
+NUM_HUGEPAGES=512
+TESTPMD_LOG=/tmp/testpmd.log
+TESTPMD_PID=/tmp/testpmd.pid
+
+if [ -f ${TESTPMD_PID} ]
+then
+  echo Testpmd is already running. Please stop running instance first.
+  echo Delete PID file ${TESTPMD_PID} if you are sure this is a stale PID file.
+  exit 1
+fi
+
+# Load igb_uio module if this is the driver we want to use
+if [ "${TARGET_DRIVER}" = "igb_uio" ]
+then
+  insmod ${PATH_TO_IGB_UIO_MODULE}
+fi
+
+# Set up hugepages
+echo "vm.nr_hugepages = ${NUM_HUGEPAGES}" > /etc/sysctl.conf
+sysctl -p
+mkdir -p /mnt/huge
+grep -q hugetlbfs /etc/fstab || echo "hugetlbfs /mnt/huge hugetlbfs mode=1770,gid=2021 0 0" >> /etc/fstab
+mount -a
+
+#
+echo 1af4 1000 > /sys/bus/pci/drivers/${TARGET_DRIVER}/new_id
+#
+for dev in $(find /sys/bus/pci/drivers/virtio-pci -type l -name '*:*:*.*' | sed -e 's/.*\///')
+do
+  echo Unbinding $dev from virtio-pci
+  echo $dev > /sys/bus/pci/drivers/virtio-pci/unbind
+  echo Binding $dev to ${TARGET_DRIVER}
+  echo $dev > /sys/bus/pci/drivers/${TARGET_DRIVER}/bind
+done
+
+# Start testpmd in the background. This looks a bit convoluted; we need to redirect stdin
+# (and keep stdin active) or else testpmd will quit.
+tail -f /dev/null | nohup testpmd $@ > ${TESTPMD_LOG} 2>&1 &
+echo $! > ${TESTPMD_PID}
+_EOF
+
+cat - > ${DPDK_STOP_FILE} <<"_EOF"
+#!/bin/sh
+
+TESTPMD_LOG=/tmp/testpmd.log
+TESTPMD_PID=/tmp/testpmd.pid
+
+if [ ! -f ${TESTPMD_PID} ]
+then
+  echo Testpmd is not running.
+  exit 1
+fi
+
+kill $(cat ${TESTPMD_PID})
+rm -f ${TESTPMD_PID}
+
+cat ${TESTPMD_LOG}
+_EOF
+
+chmod 755 ${DPDK_START_FILE}
+chmod 755 ${DPDK_STOP_FILE}
diff --git a/resources/tools/disk-image-builder/nested/kernel-defconfig b/resources/tools/disk-image-builder/nested/kernel-defconfig
index 7fd03d3e45..85beb9f56f 100644
--- a/resources/tools/disk-image-builder/nested/kernel-defconfig
+++ b/resources/tools/disk-image-builder/nested/kernel-defconfig
@@ -307,6 +307,9 @@ CONFIG_SECURITY_SELINUX=y
 CONFIG_SECURITY_SELINUX_BOOTPARAM=y
 CONFIG_SECURITY_SELINUX_DISABLE=y
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
+##
+## Our modifications
+##
 CONFIG_VIRTIO_PCI=y
 CONFIG_VIRTIO_BALLOON=y
 CONFIG_VIRTIO_BLK=y
@@ -315,3 +318,8 @@ CONFIG_VIRTIO=y
 CONFIG_VIRTIO_RING=y
 CONFIG_BRIDGE=y
 CONFIG_IP_FORWARD=y
+CONFIG_PCI_MSI=y
+CONFIG_UIO=y
+CONFIG_UIO_PCI_GENERIC=y
+# CONFIG_VFIO is not set
+# CONFIG_VFIO_PCI is not set