Add tests for sysctl net.inet.ip.mtudisc
From suzu-ken@IIJ
This commit is contained in:
ozaki-r
parent
85424d4772
commit
48cafa77c5
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@ -1,4 +1,4 @@
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# $NetBSD: mi,v 1.686 2016/09/05 02:26:48 ozaki-r Exp $
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# $NetBSD: mi,v 1.687 2016/10/04 04:15:25 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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@ -3243,6 +3243,7 @@
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./usr/tests/net/net/t_ipaddress tests-net-tests atf,rump
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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_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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./usr/tests/net/net/t_tcp tests-net-tests compattestfile,atf
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@ -1,4 +1,4 @@
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# $NetBSD: Makefile,v 1.15 2016/08/08 14:16:32 pgoyette Exp $
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# $NetBSD: Makefile,v 1.16 2016/10/04 04:15:25 ozaki-r Exp $
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#
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.include <bsd.own.mk>
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@ -15,6 +15,7 @@ TESTS_SH= t_forwarding
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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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.endif
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LDADD.t_raw+= -lrumpnet_local -lrumpnet_netinet -lrumpnet_net -lrumpdev
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@ -0,0 +1,251 @@
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# $NetBSD: t_mtudisc.sh,v 1.1 2016/10/04 04:15:25 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=false
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atf_test_case mtudisc_basic cleanup
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mtudisc_basic_head()
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{
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atf_set "descr" "Tests for IPv4 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 $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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mtudisc_basic_body()
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{
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local pkt=
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local local_ip=10.0.0.2
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local gateway_local_ip=10.0.0.1
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local gateway_remote_ip=10.0.1.1
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local remote_ip=10.0.1.2
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local prefixlen=24
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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 with httpd]
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# | 10.0.0.2 10.0.0.1 | | 10.0.1.1 10.0.1.2 |
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# shmif0(mtu=1500) ----- shmif1(mtu=1280) shmif0(mtu=1500) ----- shmif0(mtu=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 IPv4 forwarding
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atf_check -s exit:0 rump.sysctl -w -q net.inet.ip.forwarding=1
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### Setup remote server
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export RUMP_SERVER=$SOCKREMOTE
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# Check default value
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atf_check -s exit:0 -o match:"1" rump.sysctl -n net.inet.ip.mtudisc
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# Start httpd daemon
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setup_httpd $SOCKREMOTE $remote_ip
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# Teach the peer thar 10.0.0.2(local serer) is behind 10.0.1.1(gateway server)
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atf_check -s exit:0 -o ignore rump.route add $local_ip/32 $gateway_remote_ip
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### Setup local server
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export RUMP_SERVER=$SOCKLOCAL
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# Teach the peer thar 10.0.1.2(remote serer) is behind 10.0.0.1(gateway server)
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atf_check -s exit:0 -o ignore rump.route add $remote_ip/32 $gateway_local_ip
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# Don't accept fragmented packets
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atf_check -s exit:0 -o ignore rump.sysctl -w -q net.inet.ip.maxfragpackets=0
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#
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# Test disabled path mtu discorvery
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#
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export RUMP_SERVER=$SOCKREMOTE
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atf_check -s exit:0 -o ignore rump.sysctl -w -q net.inet.ip.mtudisc=0
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# Get the webpage (expect: failed)
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export RUMP_SERVER=$SOCKLOCAL
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do_http_get $remote_ip 1
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$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:"^10.0.0.2 +10.0.1.1 +UGHS +- +- +- +shmif0" \
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rump.netstat -nr -f inet
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#
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# Test enabled path mtu discorvery
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#
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export RUMP_SERVER=$SOCKREMOTE
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atf_check -s exit:0 -o ignore rump.sysctl -w -q net.inet.ip.mtudisc=1
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# Get the webpage (expect: success)
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export RUMP_SERVER=$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:"^10.0.0.2 +10.0.1.1 +UGHS +- +- +1280 +shmif0" \
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rump.netstat -nr -f inet
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}
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cleanup()
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{
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gdb -ex bt /usr/bin/rump_server rump_server.core
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gdb -ex bt /usr/sbin/arp arp.core
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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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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
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rump.arp -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 $SOCKREMOTE
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shmif_dumpbus -p - bus1 2>/dev/null| tcpdump -n -e -r -
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shmif_dumpbus -p - bus2 2>/dev/null| tcpdump -n -e -r -
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}
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mtudisc_basic_cleanup()
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{
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$DEBUG && dump
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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 mtudisc_basic
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}
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