Add basic tests for IPv6 Path MTU Discovery
This commit is contained in:
ozaki-r
parent
c4414c4118
commit
4df1f132c4
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@ -1,4 +1,4 @@
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# $NetBSD: mi,v 1.694 2016/11/06 17:09:19 alnsn Exp $
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# $NetBSD: mi,v 1.695 2016/11/07 00:54:48 ozaki-r Exp $
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#
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# Note: don't delete entries from here - mark them as "obsolete" instead.
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#
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@ -3249,6 +3249,7 @@
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./usr/tests/net/net/t_ipv6address tests-net-tests atf,rump
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./usr/tests/net/net/t_ipv6_lifetime tests-net-tests atf,rump
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./usr/tests/net/net/t_mtudisc tests-net-tests atf,rump
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./usr/tests/net/net/t_mtudisc6 tests-net-tests atf,rump
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./usr/tests/net/net/t_ping6_opts tests-net-tests atf,rump
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./usr/tests/net/net/t_pktinfo tests-net-tests compattestfile,atf
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./usr/tests/net/net/t_raw tests-net-tests atf,rump
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@ -1,4 +1,4 @@
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# $NetBSD: Makefile,v 1.17 2016/10/31 10:38:25 ozaki-r Exp $
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# $NetBSD: Makefile,v 1.18 2016/11/07 00:54:48 ozaki-r Exp $
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#
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.include <bsd.own.mk>
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@ -16,6 +16,7 @@ TESTS_SH+= t_ipaddress
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TESTS_SH+= t_ipv6address
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TESTS_SH+= t_ipv6_lifetime
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TESTS_SH+= t_mtudisc
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TESTS_SH+= t_mtudisc6
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TESTS_SH+= t_ping6_opts
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.endif
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@ -0,0 +1,232 @@
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# $NetBSD: t_mtudisc6.sh,v 1.1 2016/11/07 00:54:48 ozaki-r Exp $
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#
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# Copyright (c) 2016 Internet Initiative Japan Inc.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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inetserver="rump_server -lrumpnet -lrumpnet_net -lrumpnet_netinet"
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inetserver="$inetserver -lrumpnet_netinet6 -lrumpnet_shmif"
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inetserver="$inetserver -lrumpdev"
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HIJACKING="env LD_PRELOAD=/usr/lib/librumphijack.so RUMPHIJACK=sysctl=yes"
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SOCKLOCAL=unix://commsock1
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SOCKGATEWAY=unix://commsock2
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SOCKREMOTE=unix://commsock3
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HTTPD_PID=httpd.pid
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HTML_FILE=index.html
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DEBUG=${DEBUG:-false}
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atf_test_case mtudisc6_basic cleanup
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mtudisc6_basic_head()
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{
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atf_set "descr" "Tests for IPv6 Path MTU Dicorvery basic behavior"
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atf_set "require.progs" "rump_server"
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}
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setup_server()
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{
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local sock=$1
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local if=$2
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local bus=$3
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local ip=$4
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export RUMP_SERVER=$sock
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atf_check -s exit:0 rump.ifconfig $if create
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atf_check -s exit:0 rump.ifconfig $if linkstr $bus
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atf_check -s exit:0 rump.ifconfig $if inet6 $ip
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atf_check -s exit:0 rump.ifconfig $if up
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atf_check -s exit:0 rump.ifconfig -w 10
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$DEBUG && rump.ifconfig $if
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}
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extract_new_packets()
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{
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local bus=$1
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local old=./old
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if [ ! -f $old ]; then
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old=/dev/null
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fi
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shmif_dumpbus -p - $bus 2>/dev/null| \
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tcpdump -n -e -r - 2>/dev/null > ./new
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diff -u $old ./new |grep '^+' |cut -d '+' -f 2 > ./diff
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mv -f ./new ./old
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cat ./diff
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}
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setup_httpd()
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{
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local sock=$1
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local ip=$2
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local data="0123456789"
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export RUMP_SERVER=$sock
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touch $HTML_FILE
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for i in `seq 1 512`
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do
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echo $data >> $HTML_FILE
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done
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# start httpd in daemon mode
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atf_check -s exit:0 env LD_PRELOAD=/usr/lib/librumphijack.so \
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/usr/libexec/httpd -P $HTTPD_PID -i $ip -b -s $(pwd)
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$DEBUG && rump.netstat -a
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sleep 5
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}
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do_http_get()
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{
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local ip=$1
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local ret=$2
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local timeout=5
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# get the webpage
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atf_check -s exit:$ret env LD_PRELOAD=/usr/lib/librumphijack.so \
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ftp -q $timeout -o ./out "http://[$ip]/$HTML_FILE"
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}
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mtudisc6_basic_body()
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{
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local pkt=
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local local_ip=fc00:0:0:1::2
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local gateway_local_ip=fc00:0:0:1::1
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local gateway_remote_ip=fc00:0:0:2::1
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local remote_ip=fc00:0:0:2::2
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local prefixlen=64
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atf_check -s exit:0 ${inetserver} $SOCKLOCAL
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atf_check -s exit:0 ${inetserver} $SOCKGATEWAY
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atf_check -s exit:0 ${inetserver} $SOCKREMOTE
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#
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# Setup servers
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#
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# [local server] [gateway server] [remote server]
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# | | | |
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# shmif0(1500) -- shmif1(1280) shmif0(1500) -- shmif0(1500)
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#
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# Assign IP addresses
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setup_server $SOCKLOCAL shmif0 bus1 $local_ip/$prefixlen
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setup_server $SOCKGATEWAY shmif0 bus1 $gateway_local_ip/$prefixlen
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setup_server $SOCKGATEWAY shmif1 bus2 $gateway_remote_ip/$prefixlen
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setup_server $SOCKREMOTE shmif0 bus2 $remote_ip/$prefixlen
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### Setup gateway server
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export RUMP_SERVER=$SOCKGATEWAY
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# Set MTU of shmif0 to 1280
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export RUMP_SERVER=$SOCKGATEWAY
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atf_check -s exit:0 rump.ifconfig shmif0 mtu 1280
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# Enable IPv6 forwarding
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atf_check -s exit:0 rump.sysctl -w -q net.inet6.ip6.forwarding=1
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### Setup remote server
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export RUMP_SERVER=$SOCKREMOTE
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# Start httpd daemon
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setup_httpd $SOCKREMOTE $remote_ip
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# Teach the peer that local serer is behind gateway server
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atf_check -s exit:0 -o ignore \
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rump.route add -inet6 $local_ip/128 $gateway_remote_ip
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# Check path MTU size on remote server
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atf_check -s exit:0 \
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-o match:"^$local_ip +$gateway_remote_ip +UGHS +- +- +- +shmif0" \
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rump.netstat -nr -f inet6
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### Setup local server
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export RUMP_SERVER=$SOCKLOCAL
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# Teach the peer that remote serer is behind gateway server
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atf_check -s exit:0 -o ignore \
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rump.route add -inet6 $remote_ip/128 $gateway_local_ip
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# Don't accept fragmented packets
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atf_check -s exit:0 -o ignore \
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rump.sysctl -w -q net.inet6.ip6.maxfragpackets=0
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#
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# Test enabled path MTU discorvery
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#
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# Get the webpage (expect: success)
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export RUMP_SERVER=$SOCKLOCAL
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do_http_get $remote_ip 0
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$DEBUG && extract_new_packets bus2 > ./out
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$DEBUG && cat ./out
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# Check path MTU size on remote server
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export RUMP_SERVER=$SOCKREMOTE
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atf_check -s exit:0 \
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-o match:"^$local_ip +$gateway_remote_ip +UGHS +- +- +1280 +shmif0" \
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rump.netstat -nr -f inet6
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}
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dump_server()
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{
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local sock=$1
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export RUMP_SERVER=$sock
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rump.netstat -nr -f inet6
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rump.ndp -n -a
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rump.ifconfig
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$HIJACKING dmesg
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}
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dump()
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{
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dump_server $SOCKLOCAL
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dump_server $SOCKGATEWAY
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dump_server $SOCKREMOTE
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shmif_dumpbus -p - bus1 2>/dev/null| tcpdump -n -e -r -
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shmif_dumpbus -p - bus2 2>/dev/null| tcpdump -n -e -r -
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}
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mtudisc6_basic_cleanup()
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{
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$DEBUG && dump
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kill "$(cat ${HTTPD_PID})"
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env RUMP_SERVER=$SOCKLOCAL rump.halt
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env RUMP_SERVER=$SOCKGATEWAY rump.halt
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env RUMP_SERVER=$SOCKREMOTE rump.halt
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}
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atf_init_test_cases()
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{
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atf_add_test_case mtudisc6_basic
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}
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