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|
# $NetBSD: t_ndp.sh,v 1.13 2016/08/10 23:07:57 kre Exp $
#
# Copyright (c) 2015 The NetBSD Foundation, 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"
SOCKSRC=unix://commsock1
SOCKDST=unix://commsock2
IP6SRC=fc00::1
IP6DST=fc00::2
DEBUG=true
TIMEOUT=1
atf_test_case ndp_cache_expiration cleanup
atf_test_case ndp_commands cleanup
atf_test_case ndp_cache_overwriting cleanup
atf_test_case ndp_neighborgcthresh cleanup
atf_test_case ndp_link_activation cleanup
ndp_cache_expiration_head()
{
atf_set "descr" "Tests for NDP cache expiration"
atf_set "require.progs" "rump_server"
}
ndp_commands_head()
{
atf_set "descr" "Tests for commands of ndp(8)"
atf_set "require.progs" "rump_server"
}
ndp_cache_overwriting_head()
{
atf_set "descr" "Tests for behavior of overwriting NDP caches"
atf_set "require.progs" "rump_server"
}
ndp_neighborgcthresh_head()
{
atf_set "descr" "Tests for GC of neighbor caches"
atf_set "require.progs" "rump_server"
}
ndp_link_activation_head()
{
atf_set "descr" "Tests for activating a new MAC address"
atf_set "require.progs" "rump_server"
}
setup_dst_server()
{
local assign_ip=$1
export RUMP_SERVER=$SOCKDST
atf_check -s exit:0 rump.ifconfig shmif0 create
atf_check -s exit:0 rump.ifconfig shmif0 linkstr bus1
if [ "$assign_ip" != no ]; then
atf_check -s exit:0 rump.ifconfig shmif0 inet6 $IP6DST
fi
atf_check -s exit:0 rump.ifconfig shmif0 up
atf_check -s exit:0 rump.ifconfig -w 10
$DEBUG && rump.ifconfig shmif0
$DEBUG && rump.ndp -n -a
}
setup_src_server()
{
$DEBUG && ulimit -c unlimited
export RUMP_SERVER=$SOCKSRC
# Setup an interface
atf_check -s exit:0 rump.ifconfig shmif0 create
atf_check -s exit:0 rump.ifconfig shmif0 linkstr bus1
atf_check -s exit:0 rump.ifconfig shmif0 inet6 $IP6SRC
atf_check -s exit:0 rump.ifconfig shmif0 up
atf_check -s exit:0 rump.ifconfig -w 10
# Sanity check
$DEBUG && rump.ifconfig shmif0
$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o ignore rump.ndp -n $IP6SRC
atf_check -s not-exit:0 -o ignore -e ignore rump.ndp -n $IP6DST
}
get_timeout()
{
local timeout=$(env RUMP_SERVER=$SOCKSRC rump.ndp -n $IP6DST |grep $IP6DST|awk '{print $4;}')
timeout=${timeout%s}
echo $timeout
}
ndp_cache_expiration_body()
{
atf_check -s exit:0 ${inetserver} $SOCKSRC
atf_check -s exit:0 ${inetserver} $SOCKDST
setup_dst_server
setup_src_server
#
# Check if a cache is expired expectedly
#
export RUMP_SERVER=$SOCKSRC
atf_check -s exit:0 -o ignore rump.ping6 -n -X $TIMEOUT -c 1 $IP6DST
$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o match:'permanent' rump.ndp -n $IP6SRC
# Should be cached
atf_check -s exit:0 -o not-match:'permanent' rump.ndp -n $IP6DST
timeout=$(get_timeout $IP6DST)
atf_check -s exit:0 sleep $(($timeout + 1))
$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o match:'permanent' rump.ndp -n $IP6SRC
# Expired but remains until GC sweaps it (1 day)
atf_check -s exit:0 -o match:'(1d0h0m|23h59m)' rump.ndp -n $IP6DST
}
ifdown_dst_server()
{
export RUMP_SERVER=$SOCKDST
atf_check -s exit:0 rump.ifconfig shmif0 down
export RUMP_SERVER=$SOCKSRC
}
ndp_commands_body()
{
atf_check -s exit:0 ${inetserver} $SOCKSRC
atf_check -s exit:0 ${inetserver} $SOCKDST
setup_dst_server
setup_src_server
export RUMP_SERVER=$SOCKSRC
# We can delete the entry for the interface's IP address
atf_check -s exit:0 -o match:"$IP6SRC" rump.ndp -d $IP6SRC
# Add and delete a static entry
$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o ignore rump.ndp -s fc00::10 b2:a0:20:00:00:10
$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o match:'permanent' rump.ndp -n fc00::10
atf_check -s exit:0 -o match:'deleted' rump.ndp -d fc00::10
$DEBUG && rump.ndp -n -a
atf_check -s not-exit:0 -o ignore -e ignore rump.ndp -n fc00::10
# Add multiple entries via a file (XXX not implemented)
#cat - > ./list <<-EOF
#fc00::11 b2:a0:20:00:00:11
#fc00::12 b2:a0:20:00:00:12
#fc00::13 b2:a0:20:00:00:13
#fc00::14 b2:a0:20:00:00:14
#fc00::15 b2:a0:20:00:00:15
#EOF
#$DEBUG && rump.ndp -n -a
#atf_check -s exit:0 -o ignore rump.ndp -f ./list
#$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o ignore rump.ping6 -n -X $TIMEOUT -c 1 $IP6DST
atf_check -s exit:0 -o ignore rump.ndp -s fc00::11 b2:a0:20:00:00:11
atf_check -s exit:0 -o ignore rump.ndp -s fc00::12 b2:a0:20:00:00:12
atf_check -s exit:0 -o not-match:'permanent' rump.ndp -n $IP6DST
atf_check -s exit:0 -o match:'permanent' rump.ndp -n fc00::11
atf_check -s exit:0 -o match:'permanent' rump.ndp -n fc00::12
# Test ndp -a
atf_check -s exit:0 -o match:'fc00::11' rump.ndp -n -a
atf_check -s exit:0 -o match:'fc00::12' rump.ndp -n -a
# Ensure no packet upsets the src server
ifdown_dst_server
# Flush all entries (-c)
$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o ignore rump.ndp -c
atf_check -s not-exit:0 -o ignore -e ignore rump.ndp -n $IP6SRC
atf_check -s not-exit:0 -o ignore -e ignore rump.ndp -n $IP6DST
# Only the static caches are not deleted
atf_check -s exit:0 -o ignore -e ignore rump.ndp -n fc00::11
atf_check -s exit:0 -o ignore -e ignore rump.ndp -n fc00::12
$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o ignore rump.ndp -s fc00::10 b2:a0:20:00:00:10 temp
rump.ndp -s fc00::10 b2:a0:20:00:00:10 temp
$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o not-match:'permanent' rump.ndp -n fc00::10
return 0
}
ndp_cache_overwriting_body()
{
atf_check -s exit:0 ${inetserver} $SOCKSRC
atf_check -s exit:0 ${inetserver} $SOCKDST
setup_dst_server
setup_src_server
export RUMP_SERVER=$SOCKSRC
# Cannot overwrite a permanent cache
atf_check -s not-exit:0 -e ignore rump.ndp -s $IP6SRC b2:a0:20:00:00:ff
$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o ignore rump.ping6 -n -X $TIMEOUT -c 1 $IP6DST
$DEBUG && rump.ndp -n -a
# Can overwrite a dynamic cache
atf_check -s exit:0 -o ignore rump.ndp -s $IP6DST b2:a0:20:00:00:00
$DEBUG && rump.ndp -n -a
atf_check -s exit:0 -o match:'permanent' rump.ndp -n $IP6DST
# Test temp option (XXX it doesn't work; expire time isn't set)
#atf_check -s exit:0 -o ignore rump.ndp -s fc00::10 b2:a0:20:00:00:10 temp
#$DEBUG && rump.ndp -n -a
#atf_check -s exit:0 -o not-match:'permanent' rump.ndp -n fc00::10
# Cannot overwrite a temp cache
#atf_check -s not-exit:0 -e ignore rump.ndp -s fc00::10 b2:a0:20:00:00:ff
#$DEBUG && rump.ndp -n -a
return 0
}
get_n_caches()
{
echo $(rump.ndp -a -n |grep -v -e Neighbor -e permanent |wc -l)
}
ndp_neighborgcthresh_body()
{
atf_check -s exit:0 ${inetserver} $SOCKSRC
atf_check -s exit:0 ${inetserver} $SOCKDST
setup_dst_server no
setup_src_server
export RUMP_SERVER=$SOCKDST
for i in $(seq 0 9); do
atf_check -s exit:0 rump.ifconfig shmif0 inet6 ${IP6DST}$i
done
export RUMP_SERVER=$SOCKSRC
# ping to 3 destinations
$DEBUG && rump.ndp -n -a
for i in $(seq 0 2); do
atf_check -s exit:0 -o ignore rump.ping6 -n -X $TIMEOUT -c 1 \
${IP6DST}$i
done
$DEBUG && rump.ndp -n -a
# 3 caches should be created
atf_check_equal $(get_n_caches) 3
# ping to additional 3 destinations
for i in $(seq 3 5); do
atf_check -s exit:0 -o ignore rump.ping6 -n -X $TIMEOUT -c 1 \
${IP6DST}$i
done
$DEBUG && rump.ndp -n -a
# 6 caches should be created in total
atf_check_equal $(get_n_caches) 6
# Limit the number of neighbor caches to 5
atf_check -s exit:0 -o ignore rump.sysctl -w \
net.inet6.ip6.neighborgcthresh=5
# ping to additional 4 destinations
for i in $(seq 6 9); do
atf_check -s exit:0 -o ignore rump.ping6 -n -X $TIMEOUT -c 1 \
${IP6DST}$i
done
# More than 5 caches should be created in total, but exceeded caches
# should be GC-ed
if [ "$(get_n_caches)" -gt 5 ]; then
atf_fail "Neighbor caches are not GC-ed"
fi
return 0
}
make_pkt_str_na()
{
local ip=$1
local mac=$2
local pkt=
pkt="$mac > 33:33:00:00:00:01, ethertype IPv6 (0x86dd), length 86:"
pkt="$pkt $ip > ff02::1: ICMP6, neighbor advertisement"
echo $pkt
}
extract_new_packets()
{
local old=./old
if [ ! -f $old ]; then
old=/dev/null
fi
shmif_dumpbus -p - bus1 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
}
ndp_link_activation_body()
{
local linklocal=
atf_check -s exit:0 ${inetserver} $SOCKSRC
atf_check -s exit:0 ${inetserver} $SOCKDST
setup_dst_server
setup_src_server
# flush old packets
extract_new_packets > ./out
export RUMP_SERVER=$SOCKSRC
atf_check -s exit:0 -o ignore rump.ifconfig shmif0 link \
b2:a1:00:00:00:01
atf_check -s exit:0 sleep 1
extract_new_packets > ./out
$DEBUG && cat ./out
linklocal=$(rump.ifconfig shmif0 |awk '/fe80/ {print $2;}' |awk -F % '{print $1;}')
$DEBUG && echo $linklocal
pkt=$(make_pkt_str_na $linklocal b2:a1:00:00:00:01)
atf_check -s not-exit:0 -x "cat ./out |grep -q '$pkt'"
atf_check -s exit:0 -o ignore rump.ifconfig shmif0 link \
b2:a1:00:00:00:02 active
atf_check -s exit:0 sleep 1
extract_new_packets > ./out
$DEBUG && cat ./out
linklocal=$(rump.ifconfig shmif0 |awk '/fe80/ {print $2;}' |awk -F % '{print $1;}')
$DEBUG && echo $linklocal
pkt=$(make_pkt_str_na $linklocal b2:a1:00:00:00:02)
atf_check -s exit:0 -x "cat ./out |grep -q '$pkt'"
}
cleanup()
{
env RUMP_SERVER=$SOCKSRC rump.halt
env RUMP_SERVER=$SOCKDST rump.halt
}
dump_src()
{
export RUMP_SERVER=$SOCKSRC
rump.netstat -nr
rump.ndp -n -a
rump.ifconfig
$HIJACKING dmesg
}
dump_dst()
{
export RUMP_SERVER=$SOCKDST
rump.netstat -nr
rump.ndp -n -a
rump.ifconfig
$HIJACKING dmesg
}
dump()
{
dump_src
dump_dst
shmif_dumpbus -p - bus1 2>/dev/null| tcpdump -n -e -r -
$DEBUG && gdb -ex bt /usr/bin/rump_server rump_server.core
$DEBUG && gdb -ex bt /usr/sbin/rump.ndp rump.ndp.core
}
ndp_cache_expiration_cleanup()
{
$DEBUG && dump
cleanup
}
ndp_commands_cleanup()
{
$DEBUG && dump
cleanup
}
ndp_cache_overwriting_cleanup()
{
$DEBUG && dump
cleanup
}
ndp_neighborgcthresh_cleanup()
{
$DEBUG && dump
cleanup
}
ndp_link_activation_cleanup()
{
$DEBUG && dump
cleanup
}
atf_init_test_cases()
{
atf_add_test_case ndp_cache_expiration
atf_add_test_case ndp_commands
atf_add_test_case ndp_cache_overwriting
atf_add_test_case ndp_neighborgcthresh
atf_add_test_case ndp_link_activation
}
|