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[src/trunk]: src Add basic tests for IPv6 Path MTU Discovery
details: https://anonhg.NetBSD.org/src/rev/14d2e6a19206
branches: trunk
changeset: 348774:14d2e6a19206
user: ozaki-r <ozaki-r%NetBSD.org@localhost>
date: Mon Nov 07 00:54:48 2016 +0000
description:
Add basic tests for IPv6 Path MTU Discovery
diffstat:
distrib/sets/lists/tests/mi | 3 +-
tests/net/net/Makefile | 3 +-
tests/net/net/t_mtudisc6.sh | 232 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 236 insertions(+), 2 deletions(-)
diffs (270 lines):
diff -r 5c4b862fa320 -r 14d2e6a19206 distrib/sets/lists/tests/mi
--- a/distrib/sets/lists/tests/mi Sun Nov 06 23:46:01 2016 +0000
+++ b/distrib/sets/lists/tests/mi Mon Nov 07 00:54:48 2016 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.694 2016/11/06 17:09:19 alnsn Exp $
+# $NetBSD: mi,v 1.695 2016/11/07 00:54:48 ozaki-r Exp $
#
# Note: don't delete entries from here - mark them as "obsolete" instead.
#
@@ -3249,6 +3249,7 @@
./usr/tests/net/net/t_ipv6address tests-net-tests atf,rump
./usr/tests/net/net/t_ipv6_lifetime tests-net-tests atf,rump
./usr/tests/net/net/t_mtudisc tests-net-tests atf,rump
+./usr/tests/net/net/t_mtudisc6 tests-net-tests atf,rump
./usr/tests/net/net/t_ping6_opts tests-net-tests atf,rump
./usr/tests/net/net/t_pktinfo tests-net-tests compattestfile,atf
./usr/tests/net/net/t_raw tests-net-tests atf,rump
diff -r 5c4b862fa320 -r 14d2e6a19206 tests/net/net/Makefile
--- a/tests/net/net/Makefile Sun Nov 06 23:46:01 2016 +0000
+++ b/tests/net/net/Makefile Mon Nov 07 00:54:48 2016 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.17 2016/10/31 10:38:25 ozaki-r Exp $
+# $NetBSD: Makefile,v 1.18 2016/11/07 00:54:48 ozaki-r Exp $
#
.include <bsd.own.mk>
@@ -16,6 +16,7 @@
TESTS_SH+= t_ipv6address
TESTS_SH+= t_ipv6_lifetime
TESTS_SH+= t_mtudisc
+TESTS_SH+= t_mtudisc6
TESTS_SH+= t_ping6_opts
.endif
diff -r 5c4b862fa320 -r 14d2e6a19206 tests/net/net/t_mtudisc6.sh
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/net/net/t_mtudisc6.sh Mon Nov 07 00:54:48 2016 +0000
@@ -0,0 +1,232 @@
+# $NetBSD: t_mtudisc6.sh,v 1.1 2016/11/07 00:54:48 ozaki-r Exp $
+#
+# Copyright (c) 2016 Internet Initiative Japan Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+inetserver="rump_server -lrumpnet -lrumpnet_net -lrumpnet_netinet"
+inetserver="$inetserver -lrumpnet_netinet6 -lrumpnet_shmif"
+inetserver="$inetserver -lrumpdev"
+HIJACKING="env LD_PRELOAD=/usr/lib/librumphijack.so RUMPHIJACK=sysctl=yes"
+
+SOCKLOCAL=unix://commsock1
+SOCKGATEWAY=unix://commsock2
+SOCKREMOTE=unix://commsock3
+HTTPD_PID=httpd.pid
+HTML_FILE=index.html
+
+DEBUG=${DEBUG:-false}
+
+atf_test_case mtudisc6_basic cleanup
+
+mtudisc6_basic_head()
+{
+
+ atf_set "descr" "Tests for IPv6 Path MTU Dicorvery basic behavior"
+ atf_set "require.progs" "rump_server"
+}
+
+setup_server()
+{
+ local sock=$1
+ local if=$2
+ local bus=$3
+ local ip=$4
+
+ export RUMP_SERVER=$sock
+
+ atf_check -s exit:0 rump.ifconfig $if create
+ atf_check -s exit:0 rump.ifconfig $if linkstr $bus
+ atf_check -s exit:0 rump.ifconfig $if inet6 $ip
+ atf_check -s exit:0 rump.ifconfig $if up
+ atf_check -s exit:0 rump.ifconfig -w 10
+
+ $DEBUG && rump.ifconfig $if
+}
+
+extract_new_packets()
+{
+ local bus=$1
+ local old=./old
+
+ if [ ! -f $old ]; then
+ old=/dev/null
+ fi
+
+ shmif_dumpbus -p - $bus 2>/dev/null| \
+ tcpdump -n -e -r - 2>/dev/null > ./new
+ diff -u $old ./new |grep '^+' |cut -d '+' -f 2 > ./diff
+ mv -f ./new ./old
+ cat ./diff
+}
+
+setup_httpd()
+{
+ local sock=$1
+ local ip=$2
+ local data="0123456789"
+
+ export RUMP_SERVER=$sock
+
+ touch $HTML_FILE
+ for i in `seq 1 512`
+ do
+ echo $data >> $HTML_FILE
+ done
+
+ # start httpd in daemon mode
+ atf_check -s exit:0 env LD_PRELOAD=/usr/lib/librumphijack.so \
+ /usr/libexec/httpd -P $HTTPD_PID -i $ip -b -s $(pwd)
+
+ $DEBUG && rump.netstat -a
+
+ sleep 5
+}
+
+do_http_get()
+{
+ local ip=$1
+ local ret=$2
+ local timeout=5
+
+ # get the webpage
+ atf_check -s exit:$ret env LD_PRELOAD=/usr/lib/librumphijack.so \
+ ftp -q $timeout -o ./out "http://[$ip]/$HTML_FILE";
+}
+
+mtudisc6_basic_body()
+{
+ local pkt=
+ local local_ip=fc00:0:0:1::2
+ local gateway_local_ip=fc00:0:0:1::1
+ local gateway_remote_ip=fc00:0:0:2::1
+ local remote_ip=fc00:0:0:2::2
+ local prefixlen=64
+
+ atf_check -s exit:0 ${inetserver} $SOCKLOCAL
+ atf_check -s exit:0 ${inetserver} $SOCKGATEWAY
+ atf_check -s exit:0 ${inetserver} $SOCKREMOTE
+
+ #
+ # Setup servers
+ #
+ # [local server] [gateway server] [remote server]
+ # | | | |
+ # shmif0(1500) -- shmif1(1280) shmif0(1500) -- shmif0(1500)
+ #
+
+ # Assign IP addresses
+ setup_server $SOCKLOCAL shmif0 bus1 $local_ip/$prefixlen
+ setup_server $SOCKGATEWAY shmif0 bus1 $gateway_local_ip/$prefixlen
+ setup_server $SOCKGATEWAY shmif1 bus2 $gateway_remote_ip/$prefixlen
+ setup_server $SOCKREMOTE shmif0 bus2 $remote_ip/$prefixlen
+
+ ### Setup gateway server
+ export RUMP_SERVER=$SOCKGATEWAY
+
+ # Set MTU of shmif0 to 1280
+ export RUMP_SERVER=$SOCKGATEWAY
+ atf_check -s exit:0 rump.ifconfig shmif0 mtu 1280
+
+ # Enable IPv6 forwarding
+ atf_check -s exit:0 rump.sysctl -w -q net.inet6.ip6.forwarding=1
+
+ ### Setup remote server
+ export RUMP_SERVER=$SOCKREMOTE
+
+ # Start httpd daemon
+ setup_httpd $SOCKREMOTE $remote_ip
+
+ # Teach the peer that local serer is behind gateway server
+ atf_check -s exit:0 -o ignore \
+ rump.route add -inet6 $local_ip/128 $gateway_remote_ip
+
+ # Check path MTU size on remote server
+ atf_check -s exit:0 \
+ -o match:"^$local_ip +$gateway_remote_ip +UGHS +- +- +- +shmif0" \
+ rump.netstat -nr -f inet6
+
+ ### Setup local server
+ export RUMP_SERVER=$SOCKLOCAL
+
+ # Teach the peer that remote serer is behind gateway server
+ atf_check -s exit:0 -o ignore \
+ rump.route add -inet6 $remote_ip/128 $gateway_local_ip
+
+ # Don't accept fragmented packets
+ atf_check -s exit:0 -o ignore \
+ rump.sysctl -w -q net.inet6.ip6.maxfragpackets=0
+
+ #
+ # Test enabled path MTU discorvery
+ #
+ # Get the webpage (expect: success)
+ export RUMP_SERVER=$SOCKLOCAL
+ do_http_get $remote_ip 0
+ $DEBUG && extract_new_packets bus2 > ./out
+ $DEBUG && cat ./out
+
+ # Check path MTU size on remote server
+ export RUMP_SERVER=$SOCKREMOTE
+ atf_check -s exit:0 \
+ -o match:"^$local_ip +$gateway_remote_ip +UGHS +- +- +1280 +shmif0" \
+ rump.netstat -nr -f inet6
+}
+
+dump_server()
+{
+ local sock=$1
+
+ export RUMP_SERVER=$sock
+ rump.netstat -nr -f inet6
+ rump.ndp -n -a
+ rump.ifconfig
+ $HIJACKING dmesg
+}
+
+dump()
+{
+
+ dump_server $SOCKLOCAL
+ dump_server $SOCKGATEWAY
+ dump_server $SOCKREMOTE
+ shmif_dumpbus -p - bus1 2>/dev/null| tcpdump -n -e -r -
+ shmif_dumpbus -p - bus2 2>/dev/null| tcpdump -n -e -r -
+}
+
+mtudisc6_basic_cleanup()
+{
+
+ $DEBUG && dump
+ kill "$(cat ${HTTPD_PID})"
+ env RUMP_SERVER=$SOCKLOCAL rump.halt
+ env RUMP_SERVER=$SOCKGATEWAY rump.halt
+ env RUMP_SERVER=$SOCKREMOTE rump.halt
+}
+
+atf_init_test_cases()
+{
+
+ atf_add_test_case mtudisc6_basic
+}
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