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selftests: Add a basic HSR test.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2177256 Conflicts: - tools/testing/selftests/Makefile: context difference due to missing selftest targets commit 7d0455e Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue Nov 29 17:48:15 2022 +0100 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: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Felix Maurer <fmaurer@redhat.com>
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‎tools/testing/selftests/Makefile‎

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@@ -43,6 +43,7 @@ TARGETS += mqueue
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TARGETS += nci
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TARGETS += net
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TARGETS += net/forwarding
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TARGETS += net/hsr
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TARGETS += net/mptcp
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TARGETS += netfilter
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TARGETS += nsfs

‎tools/testing/selftests/net/hsr/Makefile‎

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# SPDX-License-Identifier: GPL-2.0
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top_srcdir = ../../../../..
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TEST_PROGS := hsr_ping.sh
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include ../../lib.mk

‎tools/testing/selftests/net/hsr/config‎

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CONFIG_IPV6=y
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CONFIG_NET_SCH_NETEM=m
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CONFIG_HSR=y
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CONFIG_VETH=y

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

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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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ret=0
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ksft_skip=4
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ipv6=true
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optstring="h4"
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usage() {
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echo "Usage: $0 [OPTION]"
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echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)"
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}
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while getopts "$optstring" option;do
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case "$option" in
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"h")
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usage $0
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exit 0
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;;
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"4")
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ipv6=false
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;;
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"?")
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usage $0
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exit 1
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;;
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esac
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done
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sec=$(date +%s)
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rndh=$(printf %x $sec)-$(mktemp -u XXXXXX)
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ns1="ns1-$rndh"
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ns2="ns2-$rndh"
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ns3="ns3-$rndh"
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cleanup()
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{
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local netns
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for netns in "$ns1" "$ns2" "$ns3" ;do
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ip netns del $netns
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done
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}
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ip -Version > /dev/null 2>&1
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if [ $? -ne 0 ];then
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echo "SKIP: Could not run test without ip tool"
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exit $ksft_skip
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fi
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trap cleanup EXIT
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for i in "$ns1" "$ns2" "$ns3" ;do
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ip netns add $i || exit $ksft_skip
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ip -net $i link set lo up
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done
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echo "INFO: preparing interfaces."
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# Three HSR nodes. Each node has one link to each of its neighbour, two links in total.
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#
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# ns1eth1 ----- ns2eth1
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# hsr1 hsr2
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# ns1eth2 ns2eth2
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# | |
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# ns3eth1 ns3eth2
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# \ /
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# hsr3
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#
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# Interfaces
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ip link add ns1eth1 netns "$ns1" type veth peer name ns2eth1 netns "$ns2"
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ip link add ns1eth2 netns "$ns1" type veth peer name ns3eth1 netns "$ns3"
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ip link add ns3eth2 netns "$ns3" type veth peer name ns2eth2 netns "$ns2"
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# HSRv0.
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ip -net "$ns1" link add name hsr1 type hsr slave1 ns1eth1 slave2 ns1eth2 supervision 45 version 0 proto 0
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ip -net "$ns2" link add name hsr2 type hsr slave1 ns2eth1 slave2 ns2eth2 supervision 45 version 0 proto 0
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ip -net "$ns3" link add name hsr3 type hsr slave1 ns3eth1 slave2 ns3eth2 supervision 45 version 0 proto 0
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# IP for HSR
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ip -net "$ns1" addr add 100.64.0.1/24 dev hsr1
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ip -net "$ns1" addr add dead:beef:1::1/64 dev hsr1 nodad
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ip -net "$ns2" addr add 100.64.0.2/24 dev hsr2
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ip -net "$ns2" addr add dead:beef:1::2/64 dev hsr2 nodad
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ip -net "$ns3" addr add 100.64.0.3/24 dev hsr3
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ip -net "$ns3" addr add dead:beef:1::3/64 dev hsr3 nodad
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# All Links up
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ip -net "$ns1" link set ns1eth1 up
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ip -net "$ns1" link set ns1eth2 up
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ip -net "$ns1" link set hsr1 up
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ip -net "$ns2" link set ns2eth1 up
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ip -net "$ns2" link set ns2eth2 up
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ip -net "$ns2" link set hsr2 up
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ip -net "$ns3" link set ns3eth1 up
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ip -net "$ns3" link set ns3eth2 up
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ip -net "$ns3" link set hsr3 up
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# $1: IP address
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is_v6()
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{
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[ -z "${1##*:*}" ]
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}
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do_ping()
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{
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local netns="$1"
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local connect_addr="$2"
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local ping_args="-q -c 2"
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if is_v6 "${connect_addr}"; then
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$ipv6 || return 0
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ping_args="${ping_args} -6"
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fi
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ip netns exec ${netns} ping ${ping_args} $connect_addr >/dev/null
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if [ $? -ne 0 ] ; then
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echo "$netns -> $connect_addr connectivity [ FAIL ]" 1>&2
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ret=1
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return 1
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fi
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return 0
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}
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do_ping_long()
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{
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local netns="$1"
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local connect_addr="$2"
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local ping_args="-q -c 10"
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if is_v6 "${connect_addr}"; then
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$ipv6 || return 0
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ping_args="${ping_args} -6"
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fi
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OUT="$(LANG=C ip netns exec ${netns} ping ${ping_args} $connect_addr | grep received)"
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if [ $? -ne 0 ] ; then
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echo "$netns -> $connect_addr ping [ FAIL ]" 1>&2
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ret=1
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return 1
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fi
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VAL="$(echo $OUT | cut -d' ' -f1-8)"
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if [ "$VAL" != "10 packets transmitted, 10 received, 0% packet loss," ]
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then
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echo "$netns -> $connect_addr ping TEST [ FAIL ]"
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echo "Expect to send and receive 10 packets and no duplicates."
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echo "Full message: ${OUT}."
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ret=1
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return 1
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fi
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return 0
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}
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stop_if_error()
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{
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local msg="$1"
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if [ ${ret} -ne 0 ]; then
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echo "FAIL: ${msg}" 1>&2
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exit ${ret}
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fi
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}
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echo "INFO: Initial validation ping."
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# Each node has to be able each one.
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do_ping "$ns1" 100.64.0.2
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do_ping "$ns2" 100.64.0.1
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do_ping "$ns3" 100.64.0.1
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stop_if_error "Initial validation failed."
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do_ping "$ns1" 100.64.0.3
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do_ping "$ns2" 100.64.0.3
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do_ping "$ns3" 100.64.0.2
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do_ping "$ns1" dead:beef:1::2
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do_ping "$ns1" dead:beef:1::3
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do_ping "$ns2" dead:beef:1::1
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do_ping "$ns2" dead:beef:1::2
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do_ping "$ns3" dead:beef:1::1
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do_ping "$ns3" dead:beef:1::2
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stop_if_error "Initial validation failed."
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# Wait until supervisor all supervision frames have been processed and the node
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# entries have been merged. Otherwise duplicate frames will be observed which is
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# valid at this stage.
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WAIT=5
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while [ ${WAIT} -gt 0 ]
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do
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grep 00:00:00:00:00:00 /sys/kernel/debug/hsr/hsr*/node_table
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if [ $? -ne 0 ]
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then
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break
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fi
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sleep 1
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let WAIT = WAIT - 1
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done
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# Just a safety delay in case the above check didn't handle it.
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sleep 1
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echo "INFO: Longer ping test."
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do_ping_long "$ns1" 100.64.0.2
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do_ping_long "$ns1" dead:beef:1::2
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do_ping_long "$ns1" 100.64.0.3
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do_ping_long "$ns1" dead:beef:1::3
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stop_if_error "Longer ping test failed."
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do_ping_long "$ns2" 100.64.0.1
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do_ping_long "$ns2" dead:beef:1::1
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do_ping_long "$ns2" 100.64.0.3
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do_ping_long "$ns2" dead:beef:1::2
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stop_if_error "Longer ping test failed."
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do_ping_long "$ns3" 100.64.0.1
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do_ping_long "$ns3" dead:beef:1::1
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do_ping_long "$ns3" 100.64.0.2
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do_ping_long "$ns3" dead:beef:1::2
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stop_if_error "Longer ping test failed."
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echo "INFO: Cutting one link."
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do_ping_long "$ns1" 100.64.0.3 &
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sleep 3
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ip -net "$ns3" link set ns3eth1 down
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wait
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ip -net "$ns3" link set ns3eth1 up
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stop_if_error "Failed with one link down."
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echo "INFO: Delay the link and drop a few packages."
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tc -net "$ns3" qdisc add dev ns3eth1 root netem delay 50ms
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tc -net "$ns2" qdisc add dev ns2eth1 root netem delay 5ms loss 25%
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do_ping_long "$ns1" 100.64.0.2
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do_ping_long "$ns1" 100.64.0.3
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stop_if_error "Failed with delay and packetloss."
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do_ping_long "$ns2" 100.64.0.1
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do_ping_long "$ns2" 100.64.0.3
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stop_if_error "Failed with delay and packetloss."
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do_ping_long "$ns3" 100.64.0.1
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do_ping_long "$ns3" 100.64.0.2
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stop_if_error "Failed with delay and packetloss."
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echo "INFO: All good."
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exit $ret

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