Commit 6f9d5cac authored by David Ahern's avatar David Ahern Committed by David S. Miller
Browse files

selftests: Setup for functional tests for fib and socket lookups 



Initial commit for functional test suite for fib and socket lookups.
This commit contains the namespace setup, networking config, test options
and other basic infrastructure.

Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent acda655f

tools/testing/selftests/net/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -10,7 +10,7 @@ TEST_PROGS += fib_tests.sh fib-onlink-tests.sh pmtu.sh udpgso.sh ip_defrag.sh 
TEST_PROGS += udpgso_bench.sh fib_rule_tests.sh msg_zerocopy.sh psock_snd.sh

TEST_PROGS += udpgro_bench.sh udpgro.sh test_vxlan_under_vrf.sh reuseport_addr_any.sh

TEST_PROGS += test_vxlan_fdb_changelink.sh so_txtime.sh ipv6_flowlabel.sh

TEST_PROGS += tcp_fastopen_backup_key.sh

TEST_PROGS += tcp_fastopen_backup_key.sh fcnal-test.sh

TEST_PROGS_EXTENDED := in_netns.sh

TEST_GEN_FILES =  socket nettest

TEST_GEN_FILES += psock_fanout psock_tpacket msg_zerocopy reuseport_addr_any

tools/testing/selftests/net/fcnal-test.sh

0 → 100755
+520 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0

#

# Copyright (c) 2019 David Ahern <dsahern@gmail.com>. All rights reserved.

#

# IPv4 and IPv6 functional tests focusing on VRF and routing lookups

# for various permutations:

#   1. icmp, tcp, udp and netfilter

#   2. client, server, no-server

#   3. global address on interface

#   4. global address on 'lo'

#   5. remote and local traffic

#   6. VRF and non-VRF permutations

#

# Setup:

#                     ns-A     |     ns-B

# No VRF case:

#    [ lo ]         [ eth1 ]---|---[ eth1 ]      [ lo ]

#                                                remote address

# VRF case:

#         [ red ]---[ eth1 ]---|---[ eth1 ]      [ lo ]

#

# ns-A:

#     eth1: 172.16.1.1/24, 2001:db8:1::1/64

#       lo: 127.0.0.1/8, ::1/128

#           172.16.2.1/32, 2001:db8:2::1/128

#      red: 127.0.0.1/8, ::1/128

#           172.16.3.1/32, 2001:db8:3::1/128

#

# ns-B:

#     eth1: 172.16.1.2/24, 2001:db8:1::2/64

#      lo2: 127.0.0.1/8, ::1/128

#           172.16.2.2/32, 2001:db8:2::2/128

#

# server / client nomenclature relative to ns-A



VERBOSE=0



NSA_DEV=eth1

NSB_DEV=eth1

VRF=red

VRF_TABLE=1101



# IPv4 config

NSA_IP=172.16.1.1

NSB_IP=172.16.1.2

VRF_IP=172.16.3.1



# IPv6 config

NSA_IP6=2001:db8:1::1

NSB_IP6=2001:db8:1::2

VRF_IP6=2001:db8:3::1



NSA_LO_IP=172.16.2.1

NSB_LO_IP=172.16.2.2

NSA_LO_IP6=2001:db8:2::1

NSB_LO_IP6=2001:db8:2::2



MCAST=ff02::1

# set after namespace create

NSA_LINKIP6=

NSB_LINKIP6=



NSA=ns-A

NSB=ns-B



NSA_CMD="ip netns exec ${NSA}"

NSB_CMD="ip netns exec ${NSB}"



which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)



################################################################################

# utilities



log_test()

{

	local rc=$1

	local expected=$2

	local msg="$3"



	[ "${VERBOSE}" = "1" ] && echo



	if [ ${rc} -eq ${expected} ]; then

		nsuccess=$((nsuccess+1))

		printf "TEST: %-70s  [ OK ]\n" "${msg}"

	else

		nfail=$((nfail+1))

		printf "TEST: %-70s  [FAIL]\n" "${msg}"

		if [ "${PAUSE_ON_FAIL}" = "yes" ]; then

			echo

			echo "hit enter to continue, 'q' to quit"

			read a

			[ "$a" = "q" ] && exit 1

		fi

	fi



	if [ "${PAUSE}" = "yes" ]; then

		echo

		echo "hit enter to continue, 'q' to quit"

		read a

		[ "$a" = "q" ] && exit 1

	fi



	kill_procs

}



log_test_addr()

{

	local addr=$1

	local rc=$2

	local expected=$3

	local msg="$4"

	local astr



	astr=$(addr2str ${addr})

	log_test $rc $expected "$msg - ${astr}"

}



log_section()

{

	echo

	echo "###########################################################################"

	echo "$*"

	echo "###########################################################################"

	echo

}



log_subsection()

{

	echo

	echo "#################################################################"

	echo "$*"

	echo

}



log_start()

{

	# make sure we have no test instances running

	kill_procs



	if [ "${VERBOSE}" = "1" ]; then

		echo

		echo "#######################################################"

	fi

}



log_debug()

{

	if [ "${VERBOSE}" = "1" ]; then

		echo

		echo "$*"

		echo

	fi

}



show_hint()

{

	if [ "${VERBOSE}" = "1" ]; then

		echo "HINT: $*"

		echo

	fi

}



kill_procs()

{

	killall nettest ping ping6 >/dev/null 2>&1

	sleep 1

}



do_run_cmd()

{

	local cmd="$*"

	local out



	if [ "$VERBOSE" = "1" ]; then

		echo "COMMAND: ${cmd}"

	fi



	out=$($cmd 2>&1)

	rc=$?

	if [ "$VERBOSE" = "1" -a -n "$out" ]; then

		echo "$out"

	fi



	return $rc

}



run_cmd()

{

	do_run_cmd ${NSA_CMD} $*

}



run_cmd_nsb()

{

	do_run_cmd ${NSB_CMD} $*

}



setup_cmd()

{

	local cmd="$*"

	local rc



	run_cmd ${cmd}

	rc=$?

	if [ $rc -ne 0 ]; then

		# show user the command if not done so already

		if [ "$VERBOSE" = "0" ]; then

			echo "setup command: $cmd"

		fi

		echo "failed. stopping tests"

		if [ "${PAUSE_ON_FAIL}" = "yes" ]; then

			echo

			echo "hit enter to continue"

			read a

		fi

		exit $rc

	fi

}



setup_cmd_nsb()

{

	local cmd="$*"

	local rc



	run_cmd_nsb ${cmd}

	rc=$?

	if [ $rc -ne 0 ]; then

		# show user the command if not done so already

		if [ "$VERBOSE" = "0" ]; then

			echo "setup command: $cmd"

		fi

		echo "failed. stopping tests"

		if [ "${PAUSE_ON_FAIL}" = "yes" ]; then

			echo

			echo "hit enter to continue"

			read a

		fi

		exit $rc

	fi

}



# set sysctl values in NS-A

set_sysctl()

{

	echo "SYSCTL: $*"

	echo

	run_cmd sysctl -q -w $*

}



################################################################################

# Setup for tests



addr2str()

{

	case "$1" in

	127.0.0.1) echo "loopback";;

	::1) echo "IPv6 loopback";;



	${NSA_IP})	echo "ns-A IP";;

	${NSA_IP6})	echo "ns-A IPv6";;

	${NSA_LO_IP})	echo "ns-A loopback IP";;

	${NSA_LO_IP6})	echo "ns-A loopback IPv6";;

	${NSA_LINKIP6}|${NSA_LINKIP6}%*) echo "ns-A IPv6 LLA";;



	${NSB_IP})	echo "ns-B IP";;

	${NSB_IP6})	echo "ns-B IPv6";;

	${NSB_LO_IP})	echo "ns-B loopback IP";;

	${NSB_LO_IP6})	echo "ns-B loopback IPv6";;

	${NSB_LINKIP6}|${NSB_LINKIP6}%*) echo "ns-B IPv6 LLA";;



	${VRF_IP})	echo "VRF IP";;

	${VRF_IP6})	echo "VRF IPv6";;



	${MCAST}%*)	echo "multicast IP";;



	*) echo "unknown";;

	esac

}



get_linklocal()

{

	local ns=$1

	local dev=$2

	local addr



	addr=$(ip -netns ${ns} -6 -br addr show dev ${dev} | \

	awk '{

		for (i = 3; i <= NF; ++i) {

			if ($i ~ /^fe80/)

				print $i

		}

	}'

	)

	addr=${addr/\/*}



	[ -z "$addr" ] && return 1



	echo $addr



	return 0

}



################################################################################

# create namespaces and vrf



create_vrf()

{

	local ns=$1

	local vrf=$2

	local table=$3

	local addr=$4

	local addr6=$5



	ip -netns ${ns} link add ${vrf} type vrf table ${table}

	ip -netns ${ns} link set ${vrf} up

	ip -netns ${ns} route add vrf ${vrf} unreachable default metric 8192

	ip -netns ${ns} -6 route add vrf ${vrf} unreachable default metric 8192



	ip -netns ${ns} addr add 127.0.0.1/8 dev ${vrf}

	ip -netns ${ns} -6 addr add ::1 dev ${vrf} nodad

	if [ "${addr}" != "-" ]; then

		ip -netns ${ns} addr add dev ${vrf} ${addr}

	fi

	if [ "${addr6}" != "-" ]; then

		ip -netns ${ns} -6 addr add dev ${vrf} ${addr6}

	fi



	ip -netns ${ns} ru del pref 0

	ip -netns ${ns} ru add pref 32765 from all lookup local

	ip -netns ${ns} -6 ru del pref 0

	ip -netns ${ns} -6 ru add pref 32765 from all lookup local

}



create_ns()

{

	local ns=$1

	local addr=$2

	local addr6=$3



	ip netns add ${ns}



	ip -netns ${ns} link set lo up

	if [ "${addr}" != "-" ]; then

		ip -netns ${ns} addr add dev lo ${addr}

	fi

	if [ "${addr6}" != "-" ]; then

		ip -netns ${ns} -6 addr add dev lo ${addr6}

	fi



	ip -netns ${ns} ro add unreachable default metric 8192

	ip -netns ${ns} -6 ro add unreachable default metric 8192



	ip netns exec ${ns} sysctl -qw net.ipv4.ip_forward=1

	ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1

	ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.forwarding=1

	ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.forwarding=1

}



# create veth pair to connect namespaces and apply addresses.

connect_ns()

{

	local ns1=$1

	local ns1_dev=$2

	local ns1_addr=$3

	local ns1_addr6=$4

	local ns2=$5

	local ns2_dev=$6

	local ns2_addr=$7

	local ns2_addr6=$8



	ip -netns ${ns1} li add ${ns1_dev} type veth peer name tmp

	ip -netns ${ns1} li set ${ns1_dev} up

	ip -netns ${ns1} li set tmp netns ${ns2} name ${ns2_dev}

	ip -netns ${ns2} li set ${ns2_dev} up



	if [ "${ns1_addr}" != "-" ]; then

		ip -netns ${ns1} addr add dev ${ns1_dev} ${ns1_addr}

		ip -netns ${ns2} addr add dev ${ns2_dev} ${ns2_addr}

	fi



	if [ "${ns1_addr6}" != "-" ]; then

		ip -netns ${ns1} addr add dev ${ns1_dev} ${ns1_addr6}

		ip -netns ${ns2} addr add dev ${ns2_dev} ${ns2_addr6}

	fi

}



cleanup()

{

	# explicit cleanups to check those code paths

	ip netns | grep -q ${NSA}

	if [ $? -eq 0 ]; then

		ip -netns ${NSA} link delete ${VRF}

		ip -netns ${NSA} ro flush table ${VRF_TABLE}



		ip -netns ${NSA} addr flush dev ${NSA_DEV}

		ip -netns ${NSA} -6 addr flush dev ${NSA_DEV}

		ip -netns ${NSA} link set dev ${NSA_DEV} down

		ip -netns ${NSA} link del dev ${NSA_DEV}



		ip netns del ${NSA}

	fi



	ip netns del ${NSB}

}



setup()

{

	local with_vrf=${1}



	# make sure we are starting with a clean slate

	kill_procs

	cleanup 2>/dev/null



	log_debug "Configuring network namespaces"

	set -e



	create_ns ${NSA} ${NSA_LO_IP}/32 ${NSA_LO_IP6}/128

	create_ns ${NSB} ${NSB_LO_IP}/32 ${NSB_LO_IP6}/128

	connect_ns ${NSA} ${NSA_DEV} ${NSA_IP}/24 ${NSA_IP6}/64 \

		   ${NSB} ${NSB_DEV} ${NSB_IP}/24 ${NSB_IP6}/64



	NSA_LINKIP6=$(get_linklocal ${NSA} ${NSA_DEV})

	NSB_LINKIP6=$(get_linklocal ${NSB} ${NSB_DEV})



	# tell ns-A how to get to remote addresses of ns-B

	if [ "${with_vrf}" = "yes" ]; then

		create_vrf ${NSA} ${VRF} ${VRF_TABLE} ${VRF_IP} ${VRF_IP6}



		ip -netns ${NSA} link set dev ${NSA_DEV} vrf ${VRF}

		ip -netns ${NSA} ro add vrf ${VRF} ${NSB_LO_IP}/32 via ${NSB_IP} dev ${NSA_DEV}

		ip -netns ${NSA} -6 ro add vrf ${VRF} ${NSB_LO_IP6}/128 via ${NSB_IP6} dev ${NSA_DEV}



		ip -netns ${NSB} ro add ${VRF_IP}/32 via ${NSA_IP} dev ${NSB_DEV}

		ip -netns ${NSB} -6 ro add ${VRF_IP6}/128 via ${NSA_IP6} dev ${NSB_DEV}

	else

		ip -netns ${NSA} ro add ${NSB_LO_IP}/32 via ${NSB_IP} dev ${NSA_DEV}

		ip -netns ${NSA} ro add ${NSB_LO_IP6}/128 via ${NSB_IP6} dev ${NSA_DEV}

	fi





	# tell ns-B how to get to remote addresses of ns-A

	ip -netns ${NSB} ro add ${NSA_LO_IP}/32 via ${NSA_IP} dev ${NSB_DEV}

	ip -netns ${NSB} ro add ${NSA_LO_IP6}/128 via ${NSA_IP6} dev ${NSB_DEV}



	set +e



	sleep 1

}



################################################################################

# usage



usage()

{

	cat <<EOF

usage: ${0##*/} OPTS



	-4          IPv4 tests only

	-6          IPv6 tests only

	-t <test>   Test name/set to run

	-p          Pause on fail

	-P          Pause after each test

	-v          Be verbose

EOF

}



################################################################################

# main



TESTS_IPV4=""

TESTS_IPV6=""

PAUSE_ON_FAIL=no

PAUSE=no



while getopts :46t:pPvh o

do

	case $o in

		4) TESTS=ipv4;;

		6) TESTS=ipv6;;

		t) TESTS=$OPTARG;;

		p) PAUSE_ON_FAIL=yes;;

		P) PAUSE=yes;;

		v) VERBOSE=1;;

		h) usage; exit 0;;

		*) usage; exit 1;;

	esac

done



# make sure we don't pause twice

[ "${PAUSE}" = "yes" ] && PAUSE_ON_FAIL=no



#

# show user test config

#

if [ -z "$TESTS" ]; then

	TESTS="$TESTS_IPV4 $TESTS_IPV6 $TESTS_OTHER"

elif [ "$TESTS" = "ipv4" ]; then

	TESTS="$TESTS_IPV4"

elif [ "$TESTS" = "ipv6" ]; then

	TESTS="$TESTS_IPV6"

fi



declare -i nfail=0

declare -i nsuccess=0



for t in $TESTS

do

	case $t in

	# setup namespaces and config, but do not run any tests

	setup)		 setup; exit 0;;

	vrf_setup)	 setup "yes"; exit 0;;



	help)            echo "Test names: $TESTS"; exit 0;;

	esac

done



cleanup 2>/dev/null



printf "\nTests passed: %3d\n" ${nsuccess}

printf "Tests failed: %3d\n"   ${nfail}