Commit 7d0455e9 authored by Sebastian Andrzej Siewior's avatar Sebastian Andrzej Siewior Committed by Jakub Kicinski
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selftests: Add a basic HSR test. 



This test adds a basic HSRv0 network with 3 nodes. In its current shape
it sends and forwards packets, announcements and so merges nodes based
on MAC A/B information.
It is able to detect duplicate packets and packetloss should any occur.

Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 20d3c1e9

tools/testing/selftests/Makefile

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@@ -48,6 +48,7 @@ TARGETS += nci 
TARGETS += net

TARGETS += net/af_unix

TARGETS += net/forwarding

TARGETS += net/hsr

TARGETS += net/mptcp

TARGETS += net/openvswitch

TARGETS += netfilter

tools/testing/selftests/net/hsr/Makefile

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+7 −0
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# SPDX-License-Identifier: GPL-2.0



top_srcdir = ../../../../..



TEST_PROGS := hsr_ping.sh



include ../../lib.mk

tools/testing/selftests/net/hsr/config

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CONFIG_IPV6=y

CONFIG_NET_SCH_NETEM=m

CONFIG_HSR=y

CONFIG_VETH=y

tools/testing/selftests/net/hsr/hsr_ping.sh

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+256 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0



ret=0

ksft_skip=4

ipv6=true



optstring="h4"

usage() {

	echo "Usage: $0 [OPTION]"

	echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)"

}



while getopts "$optstring" option;do

	case "$option" in

	"h")

		usage $0

		exit 0

		;;

	"4")

		ipv6=false

		;;

	"?")

		usage $0

		exit 1

		;;

esac

done



sec=$(date +%s)

rndh=$(printf %x $sec)-$(mktemp -u XXXXXX)

ns1="ns1-$rndh"

ns2="ns2-$rndh"

ns3="ns3-$rndh"



cleanup()

{

	local netns

	for netns in "$ns1" "$ns2" "$ns3" ;do

		ip netns del $netns

	done

}



ip -Version > /dev/null 2>&1

if [ $? -ne 0 ];then

	echo "SKIP: Could not run test without ip tool"

	exit $ksft_skip

fi



trap cleanup EXIT



for i in "$ns1" "$ns2" "$ns3" ;do

	ip netns add $i || exit $ksft_skip

	ip -net $i link set lo up

done



echo "INFO: preparing interfaces."

# Three HSR nodes. Each node has one link to each of its neighbour, two links in total.

#

#    ns1eth1 ----- ns2eth1

#      hsr1         hsr2

#    ns1eth2       ns2eth2

#       |            |

#    ns3eth1      ns3eth2

#           \    /

#            hsr3

#

# Interfaces

ip link add ns1eth1 netns "$ns1" type veth peer name ns2eth1 netns "$ns2"

ip link add ns1eth2 netns "$ns1" type veth peer name ns3eth1 netns "$ns3"

ip link add ns3eth2 netns "$ns3" type veth peer name ns2eth2 netns "$ns2"



# HSRv0.

ip -net "$ns1" link add name hsr1 type hsr slave1 ns1eth1 slave2 ns1eth2 supervision 45 version 0 proto 0

ip -net "$ns2" link add name hsr2 type hsr slave1 ns2eth1 slave2 ns2eth2 supervision 45 version 0 proto 0

ip -net "$ns3" link add name hsr3 type hsr slave1 ns3eth1 slave2 ns3eth2 supervision 45 version 0 proto 0



# IP for HSR

ip -net "$ns1" addr add 100.64.0.1/24 dev hsr1

ip -net "$ns1" addr add dead:beef:1::1/64 dev hsr1 nodad

ip -net "$ns2" addr add 100.64.0.2/24 dev hsr2

ip -net "$ns2" addr add dead:beef:1::2/64 dev hsr2 nodad

ip -net "$ns3" addr add 100.64.0.3/24 dev hsr3

ip -net "$ns3" addr add dead:beef:1::3/64 dev hsr3 nodad



# All Links up

ip -net "$ns1" link set ns1eth1 up

ip -net "$ns1" link set ns1eth2 up

ip -net "$ns1" link set hsr1 up



ip -net "$ns2" link set ns2eth1 up

ip -net "$ns2" link set ns2eth2 up

ip -net "$ns2" link set hsr2 up



ip -net "$ns3" link set ns3eth1 up

ip -net "$ns3" link set ns3eth2 up

ip -net "$ns3" link set hsr3 up



# $1: IP address

is_v6()

{

	[ -z "${1##*:*}" ]

}



do_ping()

{

	local netns="$1"

	local connect_addr="$2"

	local ping_args="-q -c 2"



	if is_v6 "${connect_addr}"; then

		$ipv6 || return 0

		ping_args="${ping_args} -6"

	fi



	ip netns exec ${netns} ping ${ping_args} $connect_addr >/dev/null

	if [ $? -ne 0 ] ; then

		echo "$netns -> $connect_addr connectivity [ FAIL ]" 1>&2

		ret=1

		return 1

	fi



	return 0

}



do_ping_long()

{

	local netns="$1"

	local connect_addr="$2"

	local ping_args="-q -c 10"



	if is_v6 "${connect_addr}"; then

		$ipv6 || return 0

		ping_args="${ping_args} -6"

	fi



	OUT="$(LANG=C ip netns exec ${netns} ping ${ping_args} $connect_addr | grep received)"

	if [ $? -ne 0 ] ; then

		echo "$netns -> $connect_addr ping [ FAIL ]" 1>&2

		ret=1

		return 1

	fi



	VAL="$(echo $OUT | cut -d' ' -f1-8)"

	if [ "$VAL" != "10 packets transmitted, 10 received, 0% packet loss," ]

	then

		echo "$netns -> $connect_addr ping TEST [ FAIL ]"

		echo "Expect to send and receive 10 packets and no duplicates."

		echo "Full message: ${OUT}."

		ret=1

		return 1

	fi



	return 0

}



stop_if_error()

{

	local msg="$1"



	if [ ${ret} -ne 0 ]; then

		echo "FAIL: ${msg}" 1>&2

		exit ${ret}

	fi

}





echo "INFO: Initial validation ping."

# Each node has to be able each one.

do_ping "$ns1" 100.64.0.2

do_ping "$ns2" 100.64.0.1

do_ping "$ns3" 100.64.0.1

stop_if_error "Initial validation failed."



do_ping "$ns1" 100.64.0.3

do_ping "$ns2" 100.64.0.3

do_ping "$ns3" 100.64.0.2



do_ping "$ns1" dead:beef:1::2

do_ping "$ns1" dead:beef:1::3

do_ping "$ns2" dead:beef:1::1

do_ping "$ns2" dead:beef:1::2

do_ping "$ns3" dead:beef:1::1

do_ping "$ns3" dead:beef:1::2



stop_if_error "Initial validation failed."



# Wait until supervisor all supervision frames have been processed and the node

# entries have been merged. Otherwise duplicate frames will be observed which is

# valid at this stage.

WAIT=5

while [ ${WAIT} -gt 0 ]

do

	grep 00:00:00:00:00:00 /sys/kernel/debug/hsr/hsr*/node_table

	if [ $? -ne 0 ]

	then

		break

	fi

	sleep 1

	let WAIT = WAIT - 1

done



# Just a safety delay in case the above check didn't handle it.

sleep 1



echo "INFO: Longer ping test."

do_ping_long "$ns1" 100.64.0.2

do_ping_long "$ns1" dead:beef:1::2

do_ping_long "$ns1" 100.64.0.3

do_ping_long "$ns1" dead:beef:1::3



stop_if_error "Longer ping test failed."



do_ping_long "$ns2" 100.64.0.1

do_ping_long "$ns2" dead:beef:1::1

do_ping_long "$ns2" 100.64.0.3

do_ping_long "$ns2" dead:beef:1::2

stop_if_error "Longer ping test failed."



do_ping_long "$ns3" 100.64.0.1

do_ping_long "$ns3" dead:beef:1::1

do_ping_long "$ns3" 100.64.0.2

do_ping_long "$ns3" dead:beef:1::2

stop_if_error "Longer ping test failed."



echo "INFO: Cutting one link."

do_ping_long "$ns1" 100.64.0.3 &



sleep 3

ip -net "$ns3" link set ns3eth1 down

wait



ip -net "$ns3" link set ns3eth1 up



stop_if_error "Failed with one link down."



echo "INFO: Delay the link and drop a few packages."

tc -net "$ns3" qdisc add dev ns3eth1 root netem delay 50ms

tc -net "$ns2" qdisc add dev ns2eth1 root netem delay 5ms loss 25%



do_ping_long "$ns1" 100.64.0.2

do_ping_long "$ns1" 100.64.0.3



stop_if_error "Failed with delay and packetloss."



do_ping_long "$ns2" 100.64.0.1

do_ping_long "$ns2" 100.64.0.3



stop_if_error "Failed with delay and packetloss."



do_ping_long "$ns3" 100.64.0.1

do_ping_long "$ns3" 100.64.0.2

stop_if_error "Failed with delay and packetloss."



echo "INFO: All good."

exit $ret