67b961d3c9
ifconfig -w ensures IP addresses have left tentative state, however, it doesn't guarantee that a DAD announce packet is sent. The kernel clears tentative flag and then sends the packet so that ifconfig -w can return before the kernel sends the packet.
249 lines
6.7 KiB
Bash
249 lines
6.7 KiB
Bash
# $NetBSD: t_dad.sh,v 1.6 2015/08/25 02:24:34 ozaki-r Exp $
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#
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# Copyright (c) 2015 The NetBSD Foundation, 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 -lrumpnet_shmif"
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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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SOCKPEER=unix://commsock2
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DEBUG=false
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atf_test_case dad_basic cleanup
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atf_test_case dad_duplicated cleanup
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dad_basic_head()
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{
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atf_set "descr" "Tests for IPv4 DAD basic behavior"
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atf_set "require.progs" "rump_server"
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}
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dad_duplicated_head()
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{
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atf_set "descr" "Tests for IPv4 DAD duplicated state"
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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 ip=$2
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export RUMP_SERVER=$sock
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atf_check -s exit:0 rump.ifconfig shmif0 create
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atf_check -s exit:0 rump.ifconfig shmif0 linkstr bus1
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atf_check -s exit:0 rump.ifconfig shmif0 inet $ip/24
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atf_check -s exit:0 rump.ifconfig shmif0 up
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atf_check -s exit:0 rump.ifconfig -w 10
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$DEBUG && rump.ifconfig shmif0
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}
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make_pkt_str()
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{
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local target=$1
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local sender=$2
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pkt="> ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42:"
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pkt="$pkt Request who-has $target tell $sender, length 28"
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echo $pkt
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}
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extract_new_packets()
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{
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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 - bus1 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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dad_basic_body()
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{
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local pkt=
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atf_check -s exit:0 ${inetserver} $SOCKLOCAL
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export RUMP_SERVER=$SOCKLOCAL
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atf_check -s exit:0 rump.ifconfig shmif0 create
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atf_check -s exit:0 rump.ifconfig shmif0 linkstr bus1
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atf_check -s exit:0 rump.ifconfig shmif0 inet 10.0.0.1/24
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atf_check -s exit:0 rump.ifconfig shmif0 inet 10.0.0.2/24 alias
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$DEBUG && rump.ifconfig shmif0
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atf_check -s exit:0 rump.ifconfig shmif0 up
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rump.ifconfig shmif0 > ./out
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$DEBUG && cat ./out
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# The primary address doesn't start with tentative state
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atf_check -s not-exit:0 -x "cat ./out |grep 10.0.0.1 |grep -q tentative"
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# The alias address starts with tentative state
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# XXX we have no stable way to check this, so skip for now
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#atf_check -s exit:0 -x "cat ./out |grep 10.0.0.2 |grep -q tentative"
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atf_check -s exit:0 sleep 2
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extract_new_packets > ./out
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$DEBUG && cat ./out
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# Check DAD probe packets
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pkt=$(make_pkt_str 10.0.0.2 0.0.0.0)
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atf_check -s exit:0 -x "cat ./out |grep -q '$pkt'"
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# No DAD for the primary address
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pkt=$(make_pkt_str 10.0.0.1 0.0.0.0)
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atf_check -s not-exit:0 -x "cat ./out |grep -q '$pkt'"
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# Waiting for DAD complete
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atf_check -s exit:0 rump.ifconfig -w 10
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# Give a chance to send a DAD announce packet
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atf_check -s exit:0 sleep 1
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extract_new_packets > ./out
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$DEBUG && cat ./out
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# Check the DAD announce packet
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pkt=$(make_pkt_str 10.0.0.2 10.0.0.2)
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atf_check -s exit:0 -x "cat ./out |grep -q '$pkt'"
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# The alias address left tentative
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atf_check -s not-exit:0 -x "rump.ifconfig shmif0 |grep 10.0.0.2 |grep -q tentative"
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#
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# Add a new address on the fly
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#
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atf_check -s exit:0 rump.ifconfig shmif0 inet 10.0.0.3/24 alias
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# The new address starts with tentative state
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# XXX we have no stable way to check this, so skip for now
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#atf_check -s exit:0 -x "rump.ifconfig shmif0 |grep 10.0.0.3 |grep -q tentative"
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# Check DAD probe packets
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atf_check -s exit:0 sleep 2
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extract_new_packets > ./out
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$DEBUG && cat ./out
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pkt=$(make_pkt_str 10.0.0.3 0.0.0.0)
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atf_check -s exit:0 -x "cat ./out |grep -q '$pkt'"
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# Waiting for DAD complete
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atf_check -s exit:0 rump.ifconfig -w 10
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# Give a chance to send a DAD announce packet
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atf_check -s exit:0 sleep 1
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extract_new_packets > ./out
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$DEBUG && cat ./out
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# Check the DAD announce packet
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pkt=$(make_pkt_str 10.0.0.3 10.0.0.3)
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atf_check -s exit:0 -x "cat ./out |grep -q '$pkt'"
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# The new address left tentative
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atf_check -s not-exit:0 -x "rump.ifconfig shmif0 |grep 10.0.0.3 |grep -q tentative"
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}
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dad_duplicated_body()
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{
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local localip1=10.0.1.1
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local localip2=10.0.1.11
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local peerip=10.0.1.2
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atf_check -s exit:0 ${inetserver} $SOCKLOCAL
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atf_check -s exit:0 ${inetserver} $SOCKPEER
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setup_server $SOCKLOCAL $localip1
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setup_server $SOCKPEER $peerip
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export RUMP_SERVER=$SOCKLOCAL
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# The primary address isn't marked as duplicated
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atf_check -s not-exit:0 -x "rump.ifconfig shmif0 |grep $localip1 |grep -q duplicated"
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#
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# Add a new address duplicated with the peer server
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#
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atf_check -s exit:0 rump.ifconfig shmif0 inet $peerip alias
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atf_check -s exit:0 sleep 1
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# The new address is marked as duplicated
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atf_check -s exit:0 -x "rump.ifconfig shmif0 |grep $peerip |grep -q duplicated"
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# A unique address isn't marked as duplicated
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atf_check -s exit:0 rump.ifconfig shmif0 inet $localip2 alias
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atf_check -s exit:0 sleep 1
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atf_check -s not-exit:0 -x "rump.ifconfig shmif0 |grep $localip2 |grep -q duplicated"
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}
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cleanup()
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{
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env RUMP_SERVER=$SOCKLOCAL rump.halt
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env RUMP_SERVER=$SOCKPEER rump.halt
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}
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dump_local()
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{
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export RUMP_SERVER=$SOCKLOCAL
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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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$HIJACKING dmesg
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}
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dump_peer()
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{
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export RUMP_SERVER=$SOCKPEER
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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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$HIJACKING dmesg
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}
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dump()
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{
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dump_local
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dump_peer
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shmif_dumpbus -p - bus1 2>/dev/null| tcpdump -n -e -r -
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}
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dad_basic_cleanup()
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{
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$DEBUG && dump_local
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$DEBUG && shmif_dumpbus -p - bus1 2>/dev/null| tcpdump -n -e -r -
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env RUMP_SERVER=$SOCKLOCAL rump.halt
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}
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dad_duplicated_cleanup()
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{
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$DEBUG && dump
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cleanup
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}
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atf_init_test_cases()
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{
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atf_add_test_case dad_basic
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atf_add_test_case dad_duplicated
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}
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