Adding upstream version 14.2.21.upstream/14.2.21upstream

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

12 files changed, 1863 insertions, 0 deletions

diff --git a/src/seastar/dpdk/devtools/build-tags.sh b/src/seastar/dpdk/devtools/build-tags.sh
new file mode 100755
index 00000000..0db406d6
--- /dev/null
+++ b/src/seastar/dpdk/devtools/build-tags.sh
@@ -0,0 +1,233 @@
+#!/bin/sh -e
+# Generate tags or gtags or cscope or etags files
+#
+#   BSD LICENSE
+#
+#   Copyright 2017 Cavium Networks
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     * Neither the name of Cavium networks nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+verbose=false
+linux=true
+bsd=true
+x86_32=true
+x86_64=true
+ppc_64=true
+arm_32=true
+arm_64=true
+
+print_usage()
+{
+	echo "Usage: $(basename $0) [-h] [-v] tags|cscope|gtags|etags [config]"
+	echo "Valid configs are:"
+	make showconfigs | sed 's,^,\t,'
+}
+
+# Move to the root of the git tree
+cd $(dirname $0)/..
+
+while getopts hv ARG ; do
+	case $ARG in
+		v ) verbose=true ;;
+		h ) print_usage; exit 0 ;;
+		? ) print_usage; exit 1 ;;
+	esac
+done
+shift $(($OPTIND - 1))
+
+#ignore version control files
+ignore="( -name .svn -o -name CVS -o -name .hg -o -name .git ) -prune -o"
+
+source_dirs="test app buildtools drivers examples lib"
+
+skip_bsd="( -name bsdapp ) -prune -o"
+skip_linux="( -name linuxapp ) -prune -o"
+skip_arch="( -name arch ) -prune -o"
+skip_sse="( -name *_sse*.[chS] ) -prune -o"
+skip_avx="( -name *_avx*.[chS] ) -prune -o"
+skip_neon="( -name *_neon*.[chS] ) -prune -o"
+skip_altivec="( -name *_altivec*.[chS] ) -prune -o"
+skip_arm64="( -name *arm64*.[chS] ) -prune -o"
+skip_x86="( -name *x86*.[chS] ) -prune -o"
+skip_32b_files="( -name *_32.h ) -prune -o"
+skip_64b_files="( -name *_64.h ) -prune -o"
+
+skiplist="$skip_bsd $skip_linux $skip_arch $skip_sse $skip_avx \
+		 $skip_neon $skip_altivec $skip_x86 $skip_arm64"
+
+find_sources()
+{
+	find $1 $ignore $3 -name $2 -not -type l -print
+}
+
+common_sources()
+{
+	find_sources "$source_dirs" '*.[chS]' "$skiplist"
+}
+
+linux_sources()
+{
+	find_sources "lib/librte_eal/linuxapp" '*.[chS]'
+}
+
+bsd_sources()
+{
+	find_sources "lib/librte_eal/bsdapp" '*.[chS]'
+}
+
+arm_common()
+{
+	find_sources "lib/librte_eal/common/arch/arm" '*.[chS]'
+	find_sources "$source_dirs" '*neon*.[chS]'
+}
+
+arm_32_sources()
+{
+	arm_common
+	find_sources "lib/librte_eal/common/include/arch/arm" '*.[chS]' \
+					"$skip_64b_files"
+}
+
+arm_64_sources()
+{
+	arm_common
+	find_sources "lib/librte_eal/common/include/arch/arm" '*.[chS]' \
+					 "$skip_32b_files"
+	find_sources "$source_dirs" '*arm64.[chS]'
+}
+
+x86_common()
+{
+	find_sources "lib/librte_eal/common/arch/x86" '*.[chS]'
+
+	find_sources "examples/performance-thread/common/arch/x86" '*.[chS]'
+	find_sources "$source_dirs" '*_sse*.[chS]'
+	find_sources "$source_dirs" '*_avx*.[chS]'
+	find_sources "$source_dirs" '*x86.[chS]'
+}
+
+x86_32_sources()
+{
+	x86_common
+	find_sources "lib/librte_eal/common/include/arch/x86" '*.[chS]' \
+					"$skip_64b_files"
+}
+
+x86_64_sources()
+{
+	x86_common
+	find_sources "lib/librte_eal/common/include/arch/x86" '*.[chS]' \
+					"$skip_32b_files"
+}
+
+ppc_64_sources()
+{
+	find_sources "lib/librte_eal/common/arch/ppc_64" '*.[chS]'
+	find_sources "lib/librte_eal/common/include/arch/ppc_64" '*.[chS]'
+	find_sources "$source_dirs" '*altivec*.[chS]'
+}
+
+check_valid_target()
+{
+	cfgfound=false
+	allconfigs=$(make showconfigs)
+	for cfg in $allconfigs ; do
+		if [ "$cfg" = "$1" ] ; then
+			cfgfound=true
+		fi
+	done
+	if ! $cfgfound ; then
+		echo "Invalid config: $1"
+		print_usage
+		exit 0
+	fi
+}
+
+if [ -n "$2" ]; then
+	check_valid_target $2
+
+	echo $2 | grep -q "linuxapp-" || linux=false
+	echo $2 | grep -q "bsdapp-" || bsd=false
+	echo $2 | grep -q "x86_64-" || x86_64=false
+	echo $2 | grep -q "arm-" || arm_32=false
+	echo $2 | grep -q "arm64-" || arm_64=false
+	echo $2 | grep -q "ppc_64-" || ppc_64=false
+	echo $2 | grep -q -e "i686-" -e "x32-" || x86_32=false
+fi
+
+all_sources()
+{
+	common_sources
+	if $linux ; then linux_sources ; fi
+	if $bsd ; then bsd_sources ; fi
+	if $x86_64 ; then x86_64_sources ; fi
+	if $x86_32 ; then x86_32_sources ; fi
+	if $ppc_64 ; then ppc_64_sources ; fi
+	if $arm_32 ; then arm_32_sources ; fi
+	if $arm_64 ; then arm_64_sources ; fi
+}
+
+show_flags()
+{
+	if $verbose ; then
+		echo "mode:     $1"
+		echo "config:   $2"
+		echo "linux:    $linux"
+		echo "bsd:      $bsd"
+		echo "x86_32:   $x86_32"
+		echo "x86_64:   $x86_64"
+		echo "ppc_64:   $ppc_64"
+		echo "arm_32:   $arm_32"
+		echo "arm_64:   $arm_64"
+	fi
+}
+
+case "$1" in
+	"cscope")
+		show_flags $1 $2
+		all_sources > cscope.files
+		cscope -q -b -f cscope.out
+		;;
+	"gtags")
+		show_flags $1 $2
+		all_sources | gtags -i -f -
+		;;
+	"tags")
+		show_flags $1 $2
+		rm -f tags
+		all_sources | xargs ctags -a
+		;;
+	"etags")
+		show_flags $1 $2
+		rm -f TAGS
+		all_sources | xargs etags -a
+		;;
+	*)
+		echo "Invalid mode: $1"
+		print_usage
+		;;
+esac
diff --git a/src/seastar/dpdk/devtools/check-git-log.sh b/src/seastar/dpdk/devtools/check-git-log.sh
new file mode 100755
index 00000000..910daba4
--- /dev/null
+++ b/src/seastar/dpdk/devtools/check-git-log.sh
@@ -0,0 +1,203 @@
+#! /bin/sh
+
+# BSD LICENSE
+#
+# Copyright 2016 6WIND S.A.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of 6WIND S.A. nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Check commit logs (headlines and references)
+#
+# If any doubt about the formatting, please check in the most recent history:
+#	git log --format='%>|(15)%cr   %s' --reverse | grep -i <pattern>
+
+if [ "$1" = '-h' -o "$1" = '--help' ] ; then
+	cat <<- END_OF_HELP
+	usage: $(basename $0) [-h] [range]
+
+	Check commit log formatting.
+	The git range can be specified as a "git log" option,
+	e.g. -1 to check only the latest commit.
+	The default range starts from origin/master to HEAD.
+	END_OF_HELP
+	exit
+fi
+
+selfdir=$(dirname $(readlink -f $0))
+range=${1:-origin/master..}
+# convert -N to HEAD~N.. in order to comply with git-log-fixes.sh getopts
+if printf -- $range | grep -q '^-[0-9]\+' ; then
+	range="HEAD$(printf -- $range | sed 's,^-,~,').."
+fi
+
+commits=$(git log --format='%h' --reverse $range)
+headlines=$(git log --format='%s' --reverse $range)
+bodylines=$(git log --format='%b' --reverse $range)
+fixes=$(git log --format='%h %s' --reverse $range | grep -i ': *fix' | cut -d' ' -f1)
+stablefixes=$($selfdir/git-log-fixes.sh $range | sed '/(N\/A)$/d'  | cut -d' ' -f2)
+tags=$(git log --format='%b' --reverse $range | grep -i -e 'by *:' -e 'fix.*:')
+bytag='\(Reported\|Suggested\|Signed-off\|Acked\|Reviewed\|Tested\)-by:'
+
+# check headline format (spacing, no punctuation, no code)
+bad=$(echo "$headlines" | grep --color=always \
+	-e '	' \
+	-e '^ ' \
+	-e ' $' \
+	-e '\.$' \
+	-e '[,;!?&|]' \
+	-e ':.*_' \
+	-e '^[^:]\+$' \
+	-e ':[^ ]' \
+	-e ' :' \
+	| sed 's,^,\t,')
+[ -z "$bad" ] || printf "Wrong headline format:\n$bad\n"
+
+# check headline prefix when touching only drivers, e.g. net/<driver name>
+bad=$(for commit in $commits ; do
+	headline=$(git log --format='%s' -1 $commit)
+	files=$(git diff-tree --no-commit-id --name-only -r $commit)
+	[ -z "$(echo "$files" | grep -v '^\(drivers\|doc\|config\)/')" ] ||
+		continue
+	drv=$(echo "$files" | grep '^drivers/' | cut -d "/" -f 2,3 | sort -u)
+	drvgrp=$(echo "$drv" | cut -d "/" -f 1 | uniq)
+	if [ $(echo "$drvgrp" | wc -l) -gt 1 ] ; then
+		echo "$headline" | grep -v '^drivers:'
+	elif [ $(echo "$drv" | wc -l) -gt 1 ] ; then
+		echo "$headline" | grep -v "^drivers/$drvgrp"
+	else
+		echo "$headline" | grep -v "^$drv"
+	fi
+done | sed 's,^,\t,')
+[ -z "$bad" ] || printf "Wrong headline prefix:\n$bad\n"
+
+# check headline label for common typos
+bad=$(echo "$headlines" | grep --color=always \
+	-e '^example[:/]' \
+	-e '^apps/' \
+	-e '^testpmd' \
+	-e 'test-pmd' \
+	-e '^bond:' \
+	| sed 's,^,\t,')
+[ -z "$bad" ] || printf "Wrong headline label:\n$bad\n"
+
+# check headline lowercase for first words
+bad=$(echo "$headlines" | grep --color=always \
+	-e '^.*[A-Z].*:' \
+	-e ': *[A-Z]' \
+	| sed 's,^,\t,')
+[ -z "$bad" ] || printf "Wrong headline uppercase:\n$bad\n"
+
+# check headline uppercase (Rx/Tx, VF, L2, MAC, Linux, ARM...)
+bad=$(echo "$headlines" | grep -E --color=always \
+	-e ':.*\<(rx|tx|RX|TX)\>' \
+	-e ':.*\<[pv]f\>' \
+	-e ':.*\<[hsf]w\>' \
+	-e ':.*\<l[234]\>' \
+	-e ':.*\<api\>' \
+	-e ':.*\<arm\>' \
+	-e ':.*\<armv7\>' \
+	-e ':.*\<armv8\>' \
+	-e ':.*\<crc\>' \
+	-e ':.*\<dma\>' \
+	-e ':.*\<freebsd\>' \
+	-e ':.*\<linux\>' \
+	-e ':.*\<lro\>' \
+	-e ':.*\<lsc\>' \
+	-e ':.*\<mac\>' \
+	-e ':.*\<mtu\>' \
+	-e ':.*\<nic\>' \
+	-e ':.*\<nvm\>' \
+	-e ':.*\<numa\>' \
+	-e ':.*\<pci\>' \
+	-e ':.*\<pmd\>' \
+	-e ':.*\<rss\>' \
+	-e ':.*\<tso\>' \
+	-e ':.*\<[Vv]lan\>' \
+	-e ':.*\<vsi\>' \
+	| sed 's,^,\t,')
+[ -z "$bad" ] || printf "Wrong headline lowercase:\n$bad\n"
+
+# special case check for VMDq to give good error message
+bad=$(echo "$headlines" | grep -E --color=always \
+	-e '\<(vmdq|VMDQ)\>' \
+	| sed 's,^,\t,')
+[ -z "$bad" ] || printf "Wrong headline capitalization, use 'VMDq':\n$bad\n"
+
+# check headline length (60 max)
+bad=$(echo "$headlines" |
+	awk 'length>60 {print}' |
+	sed 's,^,\t,')
+[ -z "$bad" ] || printf "Headline too long:\n$bad\n"
+
+# check body lines length (75 max)
+bad=$(echo "$bodylines" | grep -v '^Fixes:' |
+	awk 'length>75 {print}' |
+	sed 's,^,\t,')
+[ -z "$bad" ] || printf "Line too long:\n$bad\n"
+
+# check starting commit message with "It"
+bad=$(for commit in $commits ; do
+	firstbodyline=$(git log --format='%b' -1 $commit | head -n1)
+	echo "$firstbodyline" | grep --color=always -ie '^It '
+done | sed 's,^,\t,')
+[ -z "$bad" ] || printf "Wrong beginning of commit message:\n$bad\n"
+
+# check tags spelling
+bad=$(echo "$tags" |
+	grep -v "^$bytag [^,]* <.*@.*>$" |
+	grep -v '^Fixes: [0-9a-f]\{7\}[0-9a-f]* (".*")$' |
+	sed 's,^.,\t&,')
+[ -z "$bad" ] || printf "Wrong tag:\n$bad\n"
+
+# check missing Fixes: tag
+bad=$(for fix in $fixes ; do
+	git log --format='%b' -1 $fix | grep -q '^Fixes: ' ||
+		git log --format='\t%s' -1 $fix
+done)
+[ -z "$bad" ] || printf "Missing 'Fixes' tag:\n$bad\n"
+
+# check Fixes: reference
+IFS='
+'
+fixtags=$(echo "$tags" | grep '^Fixes: ')
+bad=$(for fixtag in $fixtags ; do
+	hash=$(echo "$fixtag" | sed 's,^Fixes: \([0-9a-f]*\).*,\1,')
+	if git branch --contains $hash 2>&- | grep -q '^\*' ; then
+		good="Fixes: $hash "$(git log --format='("%s")' -1 $hash 2>&-)
+	else
+		good="reference not in current branch"
+	fi
+	printf "$fixtag" | grep -v "^$good$"
+done | sed 's,^,\t,')
+[ -z "$bad" ] || printf "Wrong 'Fixes' reference:\n$bad\n"
+
+# check Cc: stable@dpdk.org for fixes
+bad=$(for fix in $stablefixes ; do
+	git log --format='%b' -1 $fix | grep -qi '^Cc: *stable@dpdk.org' ||
+		git log --format='\t%s' -1 $fix
+done)
+[ -z "$bad" ] || printf "Is it candidate for Cc: stable@dpdk.org backport?\n$bad\n"
diff --git a/src/seastar/dpdk/devtools/check-includes.sh b/src/seastar/dpdk/devtools/check-includes.sh
new file mode 100755
index 00000000..c4ec73f1
--- /dev/null
+++ b/src/seastar/dpdk/devtools/check-includes.sh
@@ -0,0 +1,288 @@
+#!/bin/sh -e
+#
+#   BSD LICENSE
+#
+#   Copyright 2016 6WIND S.A.
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     * Neither the name of 6WIND S.A. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# This script checks that header files in a given directory do not miss
+# dependencies when included on their own, do not conflict and accept being
+# compiled with the strictest possible flags.
+#
+# Files are looked up in the directory provided as the first argument,
+# otherwise build/include by default.
+#
+# Recognized environment variables:
+#
+# VERBOSE=1 is the same as -v.
+#
+# QUIET=1 is the same as -q.
+#
+# SUMMARY=1 is the same as -s.
+#
+# CC, CPPFLAGS, CFLAGS, EXTRA_CPPFLAGS, EXTRA_CFLAGS, CXX, CXXFLAGS and
+# EXTRA_CXXFLAGS are taken into account.
+#
+# PEDANTIC_CFLAGS, PEDANTIC_CXXFLAGS and PEDANTIC_CPPFLAGS provide strict
+# C/C++ compilation flags.
+#
+# IGNORE contains a list of shell patterns matching files (relative to the
+# include directory) to avoid. It is set by default to known DPDK headers
+# which must not be included on their own.
+#
+# IGNORE_CXX provides additional files for C++.
+
+while getopts hqvs arg; do
+	case $arg in
+	h)
+		cat <<EOF
+usage: $0 [-h] [-q] [-v] [-s] [DIR]
+
+This script checks that header files in a given directory do not miss
+dependencies when included on their own, do not conflict and accept being
+compiled with the strictest possible flags.
+
+  -h    display this help and exit
+  -q    quiet mode, disable normal output
+  -v    show command lines being executed
+  -s    show summary
+
+With no DIR, default to build/include.
+
+Any failed header check yields a nonzero exit status.
+EOF
+		exit
+		;;
+	q)
+		QUIET=1
+		;;
+	v)
+		VERBOSE=1
+		;;
+	s)
+		SUMMARY=1
+		;;
+	*)
+		exit 1
+		;;
+	esac
+done
+
+shift $(($OPTIND - 1))
+
+include_dir=${1:-build/include}
+
+: ${PEDANTIC_CFLAGS=-std=c99 -pedantic -Wall -Wextra -Werror}
+: ${PEDANTIC_CXXFLAGS=}
+: ${PEDANTIC_CPPFLAGS=-D_XOPEN_SOURCE=600}
+: ${CC:=cc}
+: ${CXX:=c++}
+: ${IGNORE= \
+	'rte_atomic_32.h' \
+	'rte_atomic_64.h' \
+	'rte_byteorder_32.h' \
+	'rte_byteorder_64.h' \
+	'generic/*' \
+	'exec-env/*' \
+	'rte_vhost.h' \
+	'rte_eth_vhost.h' \
+}
+: ${IGNORE_CXX= \
+	'rte_vhost.h' \
+	'rte_eth_vhost.h' \
+}
+
+temp_cc=/tmp/${0##*/}.$$.c
+pass_cc=
+failures_cc=0
+
+temp_cxx=/tmp/${0##*/}.$$.cc
+pass_cxx=
+failures_cxx=0
+
+# Process output parameters.
+
+[ "$QUIET" = 1 ] &&
+exec 1> /dev/null
+
+[ "$VERBOSE" = 1 ] &&
+output ()
+{
+	local CCV
+	local CXXV
+
+	shift
+	CCV=$CC
+	CXXV=$CXX
+	CC="echo $CC" CXX="echo $CXX" "$@"
+	CC=$CCV
+	CXX=$CXXV
+
+	"$@"
+} ||
+output ()
+{
+
+	printf '  %s\n' "$1"
+	shift
+	"$@"
+}
+
+trap 'rm -f "$temp_cc" "$temp_cxx"' EXIT
+
+compile_cc ()
+{
+	${CC} -I"$include_dir" \
+		${PEDANTIC_CPPFLAGS} ${CPPFLAGS} ${EXTRA_CPPFLAGS} \
+		${PEDANTIC_CFLAGS} ${CFLAGS} ${EXTRA_CFLAGS} \
+		-c -o /dev/null "${temp_cc}"
+}
+
+compile_cxx ()
+{
+	${CXX} -I"$include_dir" \
+		${PEDANTIC_CPPFLAGS} ${CPPFLAGS} ${EXTRA_CPPFLAGS} \
+		${PEDANTIC_CXXFLAGS} ${CXXFLAGS} ${EXTRA_CXXFLAGS} \
+		-c -o /dev/null "${temp_cxx}"
+}
+
+ignore ()
+{
+	file="$1"
+	shift
+	while [ $# -ne 0 ]; do
+		case "$file" in
+		$1)
+			return 0
+			;;
+		esac
+		shift
+	done
+	return 1
+}
+
+# Check C/C++ compilation for each header file.
+
+while read -r path
+do
+	file=${path#$include_dir}
+	file=${file##/}
+	if ignore "$file" $IGNORE; then
+		output "SKIP $file" :
+		continue
+	fi
+	if printf "\
+#include <%s>
+
+int main(void)
+{
+	return 0;
+}
+" "$file" > "$temp_cc" &&
+		output "CC $file" compile_cc
+	then
+		pass_cc="$pass_cc $file"
+	else
+		failures_cc=$(($failures_cc + 1))
+	fi
+	if ignore "$file" $IGNORE_CXX; then
+		output "SKIP CXX $file" :
+		continue
+	fi
+	if printf "\
+#include <%s>
+
+int main()
+{
+}
+" "$file" > "$temp_cxx" &&
+		output "CXX $file" compile_cxx
+	then
+		pass_cxx="$pass_cxx $file"
+	else
+		failures_cxx=$(($failures_cxx + 1))
+	fi
+done <<EOF
+$(find "$include_dir" -name '*.h')
+EOF
+
+# Check C compilation with all includes.
+
+: > "$temp_cc" &&
+for file in $pass_cc; do
+	printf "\
+#include <%s>
+" "$file" >> $temp_cc
+done
+if printf "\
+int main(void)
+{
+	return 0;
+}
+" >> "$temp_cc" &&
+	output "CC (all includes that did not fail)" compile_cc
+then
+	:
+else
+	failures_cc=$(($failures_cc + 1))
+fi
+
+# Check C++ compilation with all includes.
+
+: > "$temp_cxx" &&
+for file in $pass_cxx; do
+	printf "\
+#include <%s>
+" "$file" >> $temp_cxx
+done
+if printf "\
+int main()
+{
+}
+" >> "$temp_cxx" &&
+	output "CXX (all includes that did not fail)" compile_cxx
+then
+	:
+else
+	failures_cxx=$(($failures_cxx + 1))
+fi
+
+# Report results.
+
+if [ "$SUMMARY" = 1 ]; then
+	printf "\
+Summary:
+ %u failure(s) for C using '%s'.
+ %u failure(s) for C++ using '%s'.
+" $failures_cc "$CC" $failures_cxx "$CXX" 1>&2
+fi
+
+# Exit with nonzero status if there are failures.
+
+[ $failures_cc -eq 0 ] &&
+[ $failures_cxx -eq 0 ]
diff --git a/src/seastar/dpdk/devtools/check-maintainers.sh b/src/seastar/dpdk/devtools/check-maintainers.sh
new file mode 100755
index 00000000..69c879a8
--- /dev/null
+++ b/src/seastar/dpdk/devtools/check-maintainers.sh
@@ -0,0 +1,157 @@
+#! /bin/sh
+
+# BSD LICENSE
+#
+# Copyright 2015 6WIND S.A.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of 6WIND S.A. nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Do some basic checks in MAINTAINERS file
+
+cd $(dirname $0)/..
+
+# Get files matching paths with wildcards and / meaning recursing
+files () # <path> [<path> ...]
+{
+	if [ -z "$1" ] ; then
+		return
+	fi
+	if [ -d .git ] ; then
+		git ls-files "$1"
+	else
+		find "$1" -type f |
+		sed 's,^\./,,'
+	fi |
+	# if not ended by /
+	if ! echo "$1" | grep -q '/[[:space:]]*$' ; then
+		# filter out deeper directories
+		sed "/\(\/[^/]*\)\{$(($(echo "$1" | grep -o / | wc -l) + 1))\}/d"
+	else
+		cat
+	fi
+	# next path
+	shift
+	files "$@"
+}
+
+# Get all files matching F: and X: fields
+parse_fx () # <index file>
+{
+	IFS='
+'
+	# parse each line excepted underlining
+	for line in $( (sed '/^-\+$/d' $1 ; echo) | sed 's,^$,§,') ; do
+		if echo "$line" | grep -q '^§$' ; then
+			# empty line delimit end of section
+			whitelist=$(files $flines)
+			blacklist=$(files $xlines)
+			match=$(aminusb "$whitelist" "$blacklist")
+			if [ -n "$whitelist" ] ; then
+				printf "# $title "
+				maintainers=$(echo "$maintainers" | sed -r 's,.*<(.*)>.*,\1,')
+				maintainers=$(printf "$maintainers" | sed -e 's,^,<,' -e 's,$,>,')
+				echo $maintainers
+			fi
+			if [ -n "$match" ] ; then
+				echo "$match"
+			fi
+			# flush section
+			unset maintainers
+			unset flines
+			unset xlines
+		elif echo "$line" | grep -q '^[A-Z]: ' ; then
+			# maintainer
+			maintainers=$(add_line_to_if "$line" "$maintainers" 'M: ')
+			# file matching pattern
+			flines=$(add_line_to_if "$line" "$flines" 'F: ')
+			# file exclusion pattern
+			xlines=$(add_line_to_if "$line" "$xlines" 'X: ')
+		else # assume it is a title
+			title="$line"
+		fi
+	done
+}
+
+# Check patterns in F: and X:
+check_fx () # <index file>
+{
+	IFS='
+'
+	for line in $(sed -n 's,^[FX]: ,,p' $1 | tr '*' '#') ; do
+		line=$(printf "$line" | tr '#' '*')
+		match=$(files "$line")
+		if [ -z "$match" ] ; then
+			echo "$line"
+		fi
+	done
+}
+
+# Add a line to a set of lines if it begins with right pattern
+add_line_to_if () # <new line> <lines> <head pattern>
+{
+	(
+		echo "$2"
+		echo "$1" | sed -rn "s,^$3(.*),\1,p"
+	) |
+	sed '/^$/d'
+}
+
+# Subtract two sets of lines
+aminusb () # <lines a> <lines b>
+{
+	printf "$1\n$2\n$2" | sort | uniq -u | sed '/^$/d'
+}
+
+printf 'sections: '
+parsed=$(parse_fx MAINTAINERS)
+echo "$parsed" | grep -c '^#'
+printf 'with maintainer: '
+echo "$parsed" | grep -c '^#.*@'
+printf 'maintainers: '
+grep '^M:.*<' MAINTAINERS | sort -u | wc -l
+
+echo
+echo '##########'
+echo '# orphan areas'
+echo '##########'
+echo "$parsed" | sed -rn 's,^#([^@]*)$,\1,p' | uniq
+
+echo
+echo '##########'
+echo '# files not listed'
+echo '##########'
+all=$(files ./)
+listed=$(echo "$parsed" | sed '/^#/d' | sort -u)
+aminusb "$all" "$listed"
+
+echo
+echo '##########'
+echo '# wrong patterns'
+echo '##########'
+check_fx MAINTAINERS
+
+# TODO: check overlaps
diff --git a/src/seastar/dpdk/devtools/checkpatches.sh b/src/seastar/dpdk/devtools/checkpatches.sh
new file mode 100755
index 00000000..a56c41a3
--- /dev/null
+++ b/src/seastar/dpdk/devtools/checkpatches.sh
@@ -0,0 +1,135 @@
+#! /bin/sh
+
+# BSD LICENSE
+#
+# Copyright 2015 6WIND S.A.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of 6WIND S.A. nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Load config options:
+# - DPDK_CHECKPATCH_PATH
+# - DPDK_CHECKPATCH_LINE_LENGTH
+. $(dirname $(readlink -e $0))/load-devel-config
+
+length=${DPDK_CHECKPATCH_LINE_LENGTH:-80}
+
+# override default Linux options
+options="--no-tree"
+options="$options --max-line-length=$length"
+options="$options --show-types"
+options="$options --ignore=LINUX_VERSION_CODE,FILE_PATH_CHANGES,\
+VOLATILE,PREFER_PACKED,PREFER_ALIGNED,PREFER_PRINTF,\
+PREFER_KERNEL_TYPES,BIT_MACRO,CONST_STRUCT,\
+SPLIT_STRING,LONG_LINE_STRING,\
+LINE_SPACING,PARENTHESIS_ALIGNMENT,NETWORKING_BLOCK_COMMENT_STYLE,\
+NEW_TYPEDEFS,COMPARISON_TO_NULL"
+
+print_usage () {
+	cat <<- END_OF_HELP
+	usage: $(basename $0) [-q] [-v] [-nX|patch1 [patch2] ...]]
+
+	Run Linux kernel checkpatch.pl with DPDK options.
+	The environment variable DPDK_CHECKPATCH_PATH must be set.
+
+	The patches to check can be from stdin, files specified on the command line,
+	or latest git commits limited with -n option (default limit: origin/master).
+	END_OF_HELP
+}
+
+number=0
+quiet=false
+verbose=false
+while getopts hn:qv ARG ; do
+	case $ARG in
+		n ) number=$OPTARG ;;
+		q ) quiet=true ;;
+		v ) verbose=true ;;
+		h ) print_usage ; exit 0 ;;
+		? ) print_usage ; exit 1 ;;
+	esac
+done
+shift $(($OPTIND - 1))
+
+if [ ! -x "$DPDK_CHECKPATCH_PATH" ] ; then
+	print_usage >&2
+	echo
+	echo 'Cannot execute DPDK_CHECKPATCH_PATH' >&2
+	exit 1
+fi
+
+total=0
+status=0
+
+check () { # <patch> <commit> <title>
+	total=$(($total + 1))
+	! $verbose || printf '\n### %s\n\n' "$3"
+	if [ -n "$1" ] ; then
+		report=$($DPDK_CHECKPATCH_PATH $options "$1" 2>/dev/null)
+	elif [ -n "$2" ] ; then
+		report=$(git format-patch --find-renames --no-stat --stdout -1 $commit |
+			$DPDK_CHECKPATCH_PATH $options - 2>/dev/null)
+	else
+		report=$($DPDK_CHECKPATCH_PATH $options - 2>/dev/null)
+	fi
+	[ $? -ne 0 ] || return 0
+	$verbose || printf '\n### %s\n\n' "$3"
+	printf '%s\n' "$report" | sed -n '1,/^total:.*lines checked$/p'
+	status=$(($status + 1))
+}
+
+if [ -n "$1" ] ; then
+	for patch in "$@" ; do
+		# Subject can be on 2 lines
+		subject=$(sed '/^Subject: */!d;s///;N;s,\n[[:space:]]\+, ,;s,\n.*,,;q' "$patch")
+		check "$patch" '' "$subject"
+	done
+elif [ ! -t 0 ] ; then # stdin
+	subject=$(while read header value ; do
+		if [ "$header" = 'Subject:' ] ; then
+			IFS= read next
+			continuation=$(echo "$next" | sed -n 's,^[[:space:]]\+, ,p')
+			echo $value$continuation
+			break
+		fi
+	done)
+	check '' '' "$subject"
+else
+	if [ $number -eq 0 ] ; then
+		commits=$(git rev-list --reverse origin/master..)
+	else
+		commits=$(git rev-list --reverse --max-count=$number HEAD)
+	fi
+	for commit in $commits ; do
+		subject=$(git log --format='%s' -1 $commit)
+		check '' $commit "$subject"
+	done
+fi
+pass=$(($total - $status))
+$quiet || printf '\n%d/%d valid patch' $pass $total
+$quiet || [ $pass -le 1 ] || printf 'es'
+$quiet || printf '\n'
+exit $status
diff --git a/src/seastar/dpdk/devtools/cocci.sh b/src/seastar/dpdk/devtools/cocci.sh
new file mode 100755
index 00000000..4ca5025f
--- /dev/null
+++ b/src/seastar/dpdk/devtools/cocci.sh
@@ -0,0 +1,64 @@
+#! /bin/sh
+
+# BSD LICENSE
+#
+# Copyright 2015 EZchip Semiconductor Ltd.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of EZchip Semiconductor nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Apply coccinelle transforms.
+
+SRCTREE=$(readlink -f $(dirname $0)/..)
+COCCI=$SRCTREE/devtools/cocci
+[ -n "$SPATCH" ] || SPATCH=$(which spatch)
+
+PATCH_LIST="$@"
+[ -n "$PATCH_LIST" ] || PATCH_LIST=$(echo $COCCI/*.cocci)
+
+[ -x "$SPATCH" ] || (
+	echo "Coccinelle tools not installed."
+	exit 1
+)
+
+tmp=$(mktemp)
+
+for c in $PATCH_LIST; do
+	while true; do
+		echo -n "Applying $c..."
+		$SPATCH --sp-file $c -c --linux-spacing --very-quiet	\
+			--include-headers --preprocess			\
+			--in-place --dir $SRCTREE > $tmp
+		if [ -s $tmp ]; then
+			echo " changes applied, retrying."
+		else
+			echo " no change."
+			break;
+		fi
+	done
+done
+
+rm -f $tmp
diff --git a/src/seastar/dpdk/devtools/cocci/mtod-offset.cocci b/src/seastar/dpdk/devtools/cocci/mtod-offset.cocci
new file mode 100644
index 00000000..13134e9d
--- /dev/null
+++ b/src/seastar/dpdk/devtools/cocci/mtod-offset.cocci
@@ -0,0 +1,76 @@
+//
+// Replace explicit packet offset computations with rte_pktmbuf_mtod_offset().
+//
+@disable paren@
+typedef uint8_t;
+expression M, O;
+@@
+(
+- rte_pktmbuf_mtod(M, char *) + O
++ rte_pktmbuf_mtod_offset(M, char *, O)
+|
+- rte_pktmbuf_mtod(M, char *) - O
++ rte_pktmbuf_mtod_offset(M, char *, -O)
+|
+- rte_pktmbuf_mtod(M, unsigned char *) + O
++ rte_pktmbuf_mtod_offset(M, unsigned char *, O)
+|
+- rte_pktmbuf_mtod(M, unsigned char *) - O
++ rte_pktmbuf_mtod_offset(M, unsigned char *, -O)
+|
+- rte_pktmbuf_mtod(M, uint8_t *) + O
++ rte_pktmbuf_mtod_offset(M, uint8_t *, O)
+|
+- rte_pktmbuf_mtod(M, uint8_t *) - O
++ rte_pktmbuf_mtod_offset(M, uint8_t *, -O)
+)
+
+
+//
+// Fold subsequent offset terms into pre-existing offset used in
+// rte_pktmbuf_mtod_offset().
+//
+@disable paren@
+expression M, O1, O2;
+@@
+(
+- rte_pktmbuf_mtod_offset(M, char *, O1) + O2
++ rte_pktmbuf_mtod_offset(M, char *, O1 + O2)
+|
+- rte_pktmbuf_mtod_offset(M, char *, O1) - O2
++ rte_pktmbuf_mtod_offset(M, char *, O1 - O2)
+|
+- rte_pktmbuf_mtod_offset(M, unsigned char *, O1) + O2
++ rte_pktmbuf_mtod_offset(M, unsigned char *, O1 + O2)
+|
+- rte_pktmbuf_mtod_offset(M, unsigned char *, O1) - O2
++ rte_pktmbuf_mtod_offset(M, unsigned char *, O1 - O2)
+|
+- rte_pktmbuf_mtod_offset(M, uint8_t *, O1) + O2
++ rte_pktmbuf_mtod_offset(M, uint8_t *, O1 + O2)
+|
+- rte_pktmbuf_mtod_offset(M, uint8_t *, O1) - O2
++ rte_pktmbuf_mtod_offset(M, uint8_t *, O1 - O2)
+)
+
+
+//
+// Cleanup rules.  Fold in double casts, remove unnecessary paranthesis, etc.
+//
+@disable paren@
+expression M, O;
+type C, T;
+@@
+(
+- (C)rte_pktmbuf_mtod_offset(M, T, O)
++ rte_pktmbuf_mtod_offset(M, C, O)
+|
+- (rte_pktmbuf_mtod_offset(M, T, O))
++ rte_pktmbuf_mtod_offset(M, T, O)
+|
+- (C)rte_pktmbuf_mtod(M, T)
++ rte_pktmbuf_mtod(M, C)
+|
+- (rte_pktmbuf_mtod(M, T))
++ rte_pktmbuf_mtod(M, T)
+)
diff --git a/src/seastar/dpdk/devtools/git-log-fixes.sh b/src/seastar/dpdk/devtools/git-log-fixes.sh
new file mode 100755
index 00000000..74049467
--- /dev/null
+++ b/src/seastar/dpdk/devtools/git-log-fixes.sh
@@ -0,0 +1,131 @@
+#! /bin/sh -e
+
+# BSD LICENSE
+#
+# Copyright 2016 6WIND S.A.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of 6WIND S.A. nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+print_usage ()
+{
+	echo "usage: $(basename $0) [-h] <git_range>"
+}
+
+print_help ()
+{
+	print_usage
+	cat <<- END_OF_HELP
+
+	Find fixes to backport on previous versions.
+	It looks for the word "fix" in the headline or a tag "Fixes" or "Reverts".
+	The oldest bug origin is printed as well as partially fixed versions.
+	END_OF_HELP
+}
+
+usage_error () # <message>
+{
+	echo "$*" >&2
+	print_usage >&2
+	exit 1
+}
+
+while getopts h ARG ; do
+	case $ARG in
+		h ) print_help ; exit 0 ;;
+		? ) print_usage >&2 ; exit 1 ;;
+	esac
+done
+shift $(($OPTIND - 1))
+[ $# -ge 1 ] || usage_error 'range argument required'
+range="$*"
+
+# get major release version of a commit
+commit_version () # <hash>
+{
+	tag=$(git tag -l --contains $1 | head -n1)
+	if [ -z "$tag" ] ; then
+		# before -rc1 tag of release in progress
+		make showversion | cut -d'.' -f-2
+	else
+		echo $tag | sed 's,^v,,' | sed 's,-rc.*,,'
+	fi
+}
+
+# get bug origin hashes of a fix
+origin_filter () # <hash>
+{
+	git log --format='%b' -1 $1 |
+	sed -n 's,^ *\([Ff]ixes\|[Rr]everts\): *\([0-9a-f]*\).*,\2,p'
+}
+
+# get oldest major release version of bug origins
+origin_version () # <origin_hash> ...
+{
+	for origin in $* ; do
+		# check hash is valid
+		git rev-parse -q --verify $1 >&- || continue
+		# get version of this bug origin
+		local origver=$(commit_version $origin)
+		local roothashes="$(origin_filter $origin)"
+		if [ -n "$roothashes" ] ; then
+			# look chained fix of fix recursively
+			local rootver="$(origin_version $roothashes)"
+			[ -n "$rootver" ] || continue
+			echo "$rootver (partially fixed in $origver)"
+		else
+			echo "$origver"
+		fi
+	# filter the oldest origin
+	done | sort -uV | head -n1
+}
+
+# print a marker for stable tag presence
+stable_tag () # <hash>
+{
+	if git log --format='%b' -1 $1 | grep -qi '^Cc: *stable@dpdk.org' ; then
+		echo 'S'
+	else
+		echo '-'
+	fi
+}
+
+git log --oneline --reverse $range |
+while read id headline ; do
+	origins=$(origin_filter $id)
+	stable=$(stable_tag $id)
+	[ "$stable" = "S" ] || [ -n "$origins" ] || echo "$headline" | grep -q fix || continue
+	version=$(commit_version $id)
+	if [ -n "$origins" ] ; then
+		origver="$(origin_version $origins)"
+		[ -n "$origver" ] || continue
+		# ignore fix of bug introduced in the same release
+		! echo "$origver" | grep -q "^$version" || continue
+	else
+		origver='N/A'
+	fi
+	printf '%s %7s %s %s (%s)\n' $version $id $stable "$headline" "$origver"
+done
diff --git a/src/seastar/dpdk/devtools/load-devel-config b/src/seastar/dpdk/devtools/load-devel-config
new file mode 100644
index 00000000..4f43cb35
--- /dev/null
+++ b/src/seastar/dpdk/devtools/load-devel-config
@@ -0,0 +1,12 @@
+# Load DPDK devel config and allow override
+# from system file
+test ! -r /etc/dpdk/devel.config ||
+        . /etc/dpdk/devel.config
+# from user file
+test ! -r ~/.config/dpdk/devel.config ||
+        . ~/.config/dpdk/devel.config
+# from local file
+test ! -r $(dirname $(readlink -m $0))/../.develconfig ||
+        . $(dirname $(readlink -m $0))/../.develconfig
+
+# The config files must export variables in the shell style
diff --git a/src/seastar/dpdk/devtools/test-build.sh b/src/seastar/dpdk/devtools/test-build.sh
new file mode 100755
index 00000000..61bdce7c
--- /dev/null
+++ b/src/seastar/dpdk/devtools/test-build.sh
@@ -0,0 +1,257 @@
+#! /bin/sh -e
+
+# BSD LICENSE
+#
+# Copyright 2015 6WIND S.A.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of 6WIND S.A. nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+default_path=$PATH
+
+# Load config options:
+# - AESNI_MULTI_BUFFER_LIB_PATH
+# - ARMV8_CRYPTO_LIB_PATH
+# - DPDK_BUILD_TEST_CONFIGS (defconfig1+option1+option2 defconfig2)
+# - DPDK_DEP_ARCHIVE
+# - DPDK_DEP_CFLAGS
+# - DPDK_DEP_ISAL_CRYPTO (y/[n])
+# - DPDK_DEP_LDFLAGS
+# - DPDK_DEP_MOFED (y/[n])
+# - DPDK_DEP_NUMA (y/[n])
+# - DPDK_DEP_PCAP (y/[n])
+# - DPDK_DEP_SSL (y/[n])
+# - DPDK_DEP_SZE (y/[n])
+# - DPDK_DEP_ZLIB (y/[n])
+# - DPDK_MAKE_JOBS (int)
+# - DPDK_NOTIFY (notify-send)
+# - LIBSSO_SNOW3G_PATH
+# - LIBSSO_KASUMI_PATH
+# - LIBSSO_ZUC_PATH
+. $(dirname $(readlink -e $0))/load-devel-config
+
+print_usage () {
+	echo "usage: $(basename $0) [-h] [-jX] [-s] [config1 [config2] ...]]"
+}
+
+print_help () {
+	echo 'Test building several targets with different options'
+	echo
+	print_usage
+	cat <<- END_OF_HELP
+
+	options:
+	        -h    this help
+	        -jX   use X parallel jobs in "make"
+	        -s    short test only first config without tests|examples|doc
+	        -v    verbose build
+
+	config: defconfig[[~][+]option1[[~][+]option2...]]
+	        Example: x86_64-native-linuxapp-gcc+debug~RXTX_CALLBACKS
+	        The lowercase options are defined inside $(basename $0).
+	        The uppercase options can be the end of a defconfig option
+	        to enable if prefixed with '+' or to disable if prefixed with '~'.
+	        Default is to automatically enable most of the options.
+	        The external dependencies are setup with DPDK_DEP_* variables.
+	        If no config on command line, DPDK_BUILD_TEST_CONFIGS is used.
+	END_OF_HELP
+}
+
+J=$DPDK_MAKE_JOBS
+short=false
+unset verbose
+maxerr=-Wfatal-errors
+while getopts hj:sv ARG ; do
+	case $ARG in
+		j ) J=$OPTARG ;;
+		s ) short=true ;;
+		v ) verbose='V=1' ;;
+		h ) print_help ; exit 0 ;;
+		? ) print_usage ; exit 1 ;;
+	esac
+done
+shift $(($OPTIND - 1))
+configs=${*:-$DPDK_BUILD_TEST_CONFIGS}
+
+success=false
+on_exit ()
+{
+	if $success ; then
+		[ "$DPDK_NOTIFY" != notify-send ] || \
+			notify-send -u low --icon=dialog-information 'DPDK build' 'finished'
+	elif [ -z "$signal" ] ; then
+		[ -z "$dir" ] || echo "failed to build $dir" >&2
+		[ "$DPDK_NOTIFY" != notify-send ] || \
+			notify-send -u low --icon=dialog-error 'DPDK build' 'failed'
+	fi
+}
+# catch manual interrupt to ignore notification
+trap "signal=INT ; trap - INT ; kill -INT $$" INT
+# notify result on exit
+trap on_exit EXIT
+
+cd $(dirname $(readlink -m $0))/..
+
+reset_env ()
+{
+	export PATH=$default_path
+	unset CROSS
+	unset DPDK_DEP_ARCHIVE
+	unset DPDK_DEP_CFLAGS
+	unset DPDK_DEP_ISAL_CRYPTO
+	unset DPDK_DEP_LDFLAGS
+	unset DPDK_DEP_MOFED
+	unset DPDK_DEP_NUMA
+	unset DPDK_DEP_PCAP
+	unset DPDK_DEP_SSL
+	unset DPDK_DEP_SZE
+	unset DPDK_DEP_ZLIB
+	unset AESNI_MULTI_BUFFER_LIB_PATH
+	unset ARMV8_CRYPTO_LIB_PATH
+	unset LIBSSO_SNOW3G_PATH
+	unset LIBSSO_KASUMI_PATH
+	unset LIBSSO_ZUC_PATH
+	unset PQOS_INSTALL_PATH
+}
+
+config () # <directory> <target> <options>
+{
+	reconfig=false
+	if git rev-parse 2>&- && [ -n "$(git diff HEAD~ -- config)" ] ; then
+		echo 'Default config may have changed'
+		reconfig=true
+	fi
+	if [ ! -e $1/.config ] || $reconfig ; then
+		echo "================== Configure $1"
+		make T=$2 O=$1 config
+
+		echo 'Customize configuration'
+		# Built-in options (lowercase)
+		! echo $3 | grep -q '+default' || \
+		sed -ri 's,(RTE_MACHINE=")native,\1default,' $1/.config
+		echo $3 | grep -q '+next' || \
+		sed -ri           's,(NEXT_ABI=)y,\1n,' $1/.config
+		! echo $3 | grep -q '+shared' || \
+		sed -ri         's,(SHARED_LIB=)n,\1y,' $1/.config
+		! echo $3 | grep -q '+debug' || ( \
+		sed -ri     's,(RTE_LOG_LEVEL=).*,\1RTE_LOG_DEBUG,' $1/.config
+		sed -ri           's,(_DEBUG.*=)n,\1y,' $1/.config
+		sed -ri            's,(_STAT.*=)n,\1y,' $1/.config
+		sed -ri 's,(TEST_PMD_RECORD_.*=)n,\1y,' $1/.config )
+
+		# Automatic configuration
+		test "$DPDK_DEP_NUMA" != y || \
+		sed -ri               's,(NUMA=)n,\1y,' $1/.config
+		sed -ri    's,(LIBRTE_IEEE1588=)n,\1y,' $1/.config
+		sed -ri             's,(BYPASS=)n,\1y,' $1/.config
+		test "$DPDK_DEP_ARCHIVE" != y || \
+		sed -ri       's,(RESOURCE_TAR=)n,\1y,' $1/.config
+		test "$DPDK_DEP_MOFED" != y || \
+		sed -ri           's,(MLX._PMD=)n,\1y,' $1/.config
+		test "$DPDK_DEP_SZE" != y || \
+		sed -ri       's,(PMD_SZEDATA2=)n,\1y,' $1/.config
+		test "$DPDK_DEP_ZLIB" != y || \
+		sed -ri          's,(BNX2X_PMD=)n,\1y,' $1/.config
+		sed -ri            's,(NFP_PMD=)n,\1y,' $1/.config
+		test "$DPDK_DEP_PCAP" != y || \
+		sed -ri               's,(PCAP=)n,\1y,' $1/.config
+		test -z "$ARMV8_CRYPTO_LIB_PATH" || \
+		sed -ri   's,(PMD_ARMV8_CRYPTO=)n,\1y,' $1/.config
+		test -z "$AESNI_MULTI_BUFFER_LIB_PATH" || \
+		sed -ri       's,(PMD_AESNI_MB=)n,\1y,' $1/.config
+		test "$DPDK_DEP_ISAL_CRYPTO" != y || \
+		sed -ri      's,(PMD_AESNI_GCM=)n,\1y,' $1/.config
+		test -z "$LIBSSO_SNOW3G_PATH" || \
+		sed -ri         's,(PMD_SNOW3G=)n,\1y,' $1/.config
+		test -z "$LIBSSO_KASUMI_PATH" || \
+		sed -ri         's,(PMD_KASUMI=)n,\1y,' $1/.config
+		test -z "$LIBSSO_ZUC_PATH" || \
+		sed -ri            's,(PMD_ZUC=)n,\1y,' $1/.config
+		test "$DPDK_DEP_SSL" != y || \
+		sed -ri        's,(PMD_OPENSSL=)n,\1y,' $1/.config
+		test "$DPDK_DEP_SSL" != y || \
+		sed -ri            's,(PMD_QAT=)n,\1y,' $1/.config
+		sed -ri           's,(SCHED_.*=)n,\1y,' $1/.config
+		build_config_hook $1 $2 $3
+
+		# Explicit enabler/disabler (uppercase)
+		for option in $(echo $3 | sed 's,[~+], &,g') ; do
+			pattern=$(echo $option | cut -c2-)
+			if echo $option | grep -q '^~' ; then
+				sed -ri "s,($pattern=)y,\1n," $1/.config
+			elif echo $option | grep -q '^+' ; then
+				sed -ri "s,($pattern=)n,\1y," $1/.config
+			fi
+		done
+	fi
+}
+
+# default empty hook to override in devel config
+build_config_hook () # <directory> <target> <options>
+{
+	:
+}
+
+for conf in $configs ; do
+	target=$(echo $conf | sed 's,[~+].*,,')
+	# reload config with DPDK_TARGET set
+	DPDK_TARGET=$target
+	reset_env
+	. $(dirname $(readlink -e $0))/load-devel-config
+
+	options=$(echo $conf | sed 's,[^~+]*,,')
+	dir=$conf
+	config $dir $target $options
+
+	echo "================== Build $dir"
+	make -j$J EXTRA_CFLAGS="$maxerr $DPDK_DEP_CFLAGS" \
+		EXTRA_LDFLAGS="$DPDK_DEP_LDFLAGS" $verbose O=$dir
+	! $short || break
+	echo "================== Build tests for $dir"
+	make test-build -j$J EXTRA_CFLAGS="$maxerr $DPDK_DEP_CFLAGS" \
+		EXTRA_LDFLAGS="$DPDK_DEP_LDFLAGS" $verbose O=$dir
+	echo "================== Build examples for $dir"
+	export RTE_SDK=$(pwd)
+	export RTE_TARGET=$dir
+	make -j$J -sC examples \
+		EXTRA_LDFLAGS="$DPDK_DEP_LDFLAGS" $verbose \
+		O=$(readlink -m $dir/examples)
+	unset RTE_TARGET
+	echo "################## $dir done."
+	unset dir
+done
+
+if ! $short ; then
+	mkdir -p .check
+	echo "================== Build doxygen HTML API"
+	make doc-api-html >/dev/null 2>.check/doc.txt
+	echo "================== Build sphinx HTML guides"
+	make doc-guides-html >/dev/null 2>>.check/doc.txt
+	echo "================== Check docs"
+	diff -u /dev/null .check/doc.txt
+fi
+
+success=true
diff --git a/src/seastar/dpdk/devtools/test-null.sh b/src/seastar/dpdk/devtools/test-null.sh
new file mode 100755
index 00000000..30cd0b03
--- /dev/null
+++ b/src/seastar/dpdk/devtools/test-null.sh
@@ -0,0 +1,45 @@
+#! /bin/sh -e
+
+# BSD LICENSE
+#
+# Copyright 2015 6WIND S.A.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of 6WIND S.A. nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Run a quick testpmd forwarding with null PMD without hugepage
+
+build=${1:-build}
+coremask=${2:-3} # default using cores 0 and 1
+
+if grep -q SHARED_LIB=y $build/.config; then
+	pmd='-d librte_pmd_null.so'
+fi
+
+(sleep 1 && echo stop) |
+$build/app/testpmd -c $coremask -n 1 --no-huge \
+	$pmd --vdev net_null1 --vdev net_null2 -- \
+	--total-num-mbufs=2048 -ia
diff --git a/src/seastar/dpdk/devtools/validate-abi.sh b/src/seastar/dpdk/devtools/validate-abi.sh
new file mode 100755
index 00000000..52e4e7ae
--- /dev/null
+++ b/src/seastar/dpdk/devtools/validate-abi.sh
@@ -0,0 +1,262 @@
+#!/bin/sh
+#   BSD LICENSE
+#
+#   Copyright(c) 2015 Neil Horman. All rights reserved.
+#   All rights reserved.
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+TAG1=$1
+TAG2=$2
+TARGET=$3
+ABI_DIR=`mktemp -d -p /tmp ABI.XXXXXX`
+
+usage() {
+	echo "$0 <REV1> <REV2> <TARGET>"
+}
+
+log() {
+	local level=$1
+	shift
+	echo "$*"
+}
+
+validate_tags() {
+
+	if [ -z "$HASH1" ]
+	then
+		echo "invalid revision: $TAG1"
+		return
+	fi
+	if [ -z "$HASH2" ]
+	then
+		echo "invalid revision: $TAG2"
+		return
+	fi
+}
+
+validate_args() {
+	if [ -z "$TAG1" ]
+	then
+		echo "Must Specify REV1"
+		return
+	fi
+	if [ -z "$TAG2" ]
+	then
+		echo "Must Specify REV2"
+		return
+	fi
+	if [ -z "$TARGET" ]
+	then
+		echo "Must Specify a build target"
+	fi
+}
+
+
+cleanup_and_exit() {
+	rm -rf $ABI_DIR
+	git checkout $CURRENT_BRANCH
+	exit $1
+}
+
+# Make sure we configure SHARED libraries
+# Also turn off IGB and KNI as those require kernel headers to build
+fixup_config() {
+	sed -i -e"$ a\CONFIG_RTE_BUILD_SHARED_LIB=y" config/defconfig_$TARGET
+	sed -i -e"$ a\CONFIG_RTE_NEXT_ABI=n" config/defconfig_$TARGET
+	sed -i -e"$ a\CONFIG_RTE_EAL_IGB_UIO=n" config/defconfig_$TARGET
+	sed -i -e"$ a\CONFIG_RTE_LIBRTE_KNI=n" config/defconfig_$TARGET
+	sed -i -e"$ a\CONFIG_RTE_KNI_KMOD=n" config/defconfig_$TARGET
+}
+
+###########################################
+#START
+############################################
+
+#trap on ctrl-c to clean up
+trap cleanup_and_exit SIGINT
+
+if [ -z "$DPDK_MAKE_JOBS" ]
+then
+	# This counts the number of cpus on the system
+	if [ -e /usr/bin/lscpu ]
+	then
+		DPDK_MAKE_JOBS=`lscpu -p=cpu | grep -v "#" | wc -l`
+	else
+		DPDK_MAKE_JOBS=1
+	fi
+fi
+
+#Save the current branch
+CURRENT_BRANCH=`git branch | grep \* | cut -d' ' -f2`
+
+if [ -z "$CURRENT_BRANCH" ]
+then
+	CURRENT_BRANCH=`git log --pretty=format:%H HEAD~1..HEAD`
+fi
+
+if [ -n "$VERBOSE" ]
+then
+	export VERBOSE=/dev/stdout
+else
+	export VERBOSE=/dev/null
+fi
+
+# Validate that we have all the arguments we need
+res=$(validate_args)
+if [ -n "$res" ]
+then
+	echo $res
+	usage
+	cleanup_and_exit 1
+fi
+
+HASH1=$(git show -s --format=%H "$TAG1" -- 2> /dev/null | tail -1)
+HASH2=$(git show -s --format=%H "$TAG2" -- 2> /dev/null | tail -1)
+
+# Make sure our tags exist
+res=$(validate_tags)
+if [ -n "$res" ]
+then
+	echo $res
+	cleanup_and_exit 1
+fi
+
+# Make hashes available in output for non-local reference
+TAG1="$TAG1 ($HASH1)"
+TAG2="$TAG2 ($HASH2)"
+
+ABICHECK=`which abi-compliance-checker 2>/dev/null`
+if [ $? -ne 0 ]
+then
+	log "INFO" "Cant find abi-compliance-checker utility"
+	cleanup_and_exit 1
+fi
+
+ABIDUMP=`which abi-dumper 2>/dev/null`
+if [ $? -ne 0 ]
+then
+	log "INFO" "Cant find abi-dumper utility"
+	cleanup_and_exit 1
+fi
+
+log "INFO" "We're going to check and make sure that applications built"
+log "INFO" "against DPDK DSOs from version $TAG1 will still run when executed"
+log "INFO" "against DPDK DSOs built from version $TAG2."
+log "INFO" ""
+
+# Check to make sure we have a clean tree
+git status | grep -q clean
+if [ $? -ne 0 ]
+then
+	log "WARN" "Working directory not clean, aborting"
+	cleanup_and_exit 1
+fi
+
+# Move to the root of the git tree
+cd $(dirname $0)/..
+
+log "INFO" "Checking out version $TAG1 of the dpdk"
+# Move to the old version of the tree
+git checkout $HASH1
+
+fixup_config
+
+# Checking abi compliance relies on using the dwarf information in
+# The shared objects.  Thats only included in the DSO's if we build
+# with -g
+export EXTRA_CFLAGS="$EXTRA_CFLAGS -g -O0"
+export EXTRA_LDFLAGS="$EXTRA_LDFLAGS -g"
+
+# Now configure the build
+log "INFO" "Configuring DPDK $TAG1"
+make config T=$TARGET O=$TARGET > $VERBOSE 2>&1
+
+log "INFO" "Building DPDK $TAG1. This might take a moment"
+make -j$DPDK_MAKE_JOBS O=$TARGET > $VERBOSE 2>&1
+
+if [ $? -ne 0 ]
+then
+	log "INFO" "THE BUILD FAILED.  ABORTING"
+	cleanup_and_exit 1
+fi
+
+# Move to the lib directory
+cd $TARGET/lib
+log "INFO" "COLLECTING ABI INFORMATION FOR $TAG1"
+for i in `ls *.so`
+do
+	$ABIDUMP $i -o $ABI_DIR/$i-ABI-0.dump -lver $HASH1
+done
+cd ../..
+
+# Now clean the tree, checkout the second tag, and rebuild
+git clean -f -d
+git reset --hard
+# Move to the new version of the tree
+log "INFO" "Checking out version $TAG2 of the dpdk"
+git checkout $HASH2
+
+fixup_config
+
+# Now configure the build
+log "INFO" "Configuring DPDK $TAG2"
+make config T=$TARGET O=$TARGET > $VERBOSE 2>&1
+
+log "INFO" "Building DPDK $TAG2. This might take a moment"
+make -j$DPDK_MAKE_JOBS O=$TARGET > $VERBOSE 2>&1
+
+if [ $? -ne 0 ]
+then
+	log "INFO" "THE BUILD FAILED.  ABORTING"
+	cleanup_and_exit 1
+fi
+
+cd $TARGET/lib
+log "INFO" "COLLECTING ABI INFORMATION FOR $TAG2"
+for i in `ls *.so`
+do
+	$ABIDUMP $i -o $ABI_DIR/$i-ABI-1.dump -lver $HASH2
+done
+cd ../..
+
+# Start comparison of ABI dumps
+for i in `ls $ABI_DIR/*-1.dump`
+do
+	NEWNAME=`basename $i`
+	OLDNAME=`basename $i | sed -e"s/1.dump/0.dump/"`
+	LIBNAME=`basename $i | sed -e"s/-ABI-1.dump//"`
+
+	if [ ! -f $ABI_DIR/$OLDNAME ]
+	then
+		log "INFO" "$OLDNAME DOES NOT EXIST IN $TAG1. SKIPPING..."
+	fi
+
+	#compare the abi dumps
+	$ABICHECK -l $LIBNAME -old $ABI_DIR/$OLDNAME -new $ABI_DIR/$NEWNAME
+done
+
+git reset --hard
+log "INFO" "ABI CHECK COMPLETE.  REPORTS ARE IN compat_report directory"
+cleanup_and_exit 0