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testing: selftests: nft_flowtable.sh: use random netns names

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"ns1" is a too generic name, use a random suffix to avoid
errors when such a netns exists.  Also allows to run multiple
instances of the script in parallel.

Signed-off-by: Florian Westphal <fw@strlen.de>
This commit is contained in:
Florian Westphal 2022-08-16 14:15:21 +02:00
parent aa5762c342
commit b71b7bfeac
1 changed files with 123 additions and 113 deletions
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236
tools/testing/selftests/netfilter/nft_flowtable.sh
View File

@ -14,6 +14,11 @@
# nft_flowtable.sh -o8000 -l1500 -r2000
#
sfx=$(mktemp -u "XXXXXXXX")
ns1="ns1-$sfx"
ns2="ns2-$sfx"
nsr1="nsr1-$sfx"
nsr2="nsr2-$sfx"
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
@ -36,18 +41,17 @@ checktool (){
checktool "nft --version" "run test without nft tool"
checktool "ip -Version" "run test without ip tool"
checktool "which nc" "run test without nc (netcat)"
checktool "ip netns add nsr1" "create net namespace"
checktool "ip netns add $nsr1" "create net namespace $nsr1"
ip netns add ns1
ip netns add ns2
ip netns add nsr2
ip netns add $ns1
ip netns add $ns2
ip netns add $nsr2
cleanup() {
for i in 1 2; do
ip netns del ns$i
ip netns del nsr$i
done
ip netns del $ns1
ip netns del $ns2
ip netns del $nsr1
ip netns del $nsr2
rm -f "$ns1in" "$ns1out"
rm -f "$ns2in" "$ns2out"
@ -59,22 +63,21 @@ trap cleanup EXIT
sysctl -q net.netfilter.nf_log_all_netns=1
ip link add veth0 netns nsr1 type veth peer name eth0 netns ns1
ip link add veth1 netns nsr1 type veth peer name veth0 netns nsr2
ip link add veth0 netns $nsr1 type veth peer name eth0 netns $ns1
ip link add veth1 netns $nsr1 type veth peer name veth0 netns $nsr2
ip link add veth1 netns nsr2 type veth peer name eth0 netns ns2
ip link add veth1 netns $nsr2 type veth peer name eth0 netns $ns2
for dev in lo veth0 veth1; do
for i in 1 2; do
ip -net nsr$i link set $dev up
done
ip -net $nsr1 link set $dev up
ip -net $nsr2 link set $dev up
done
ip -net nsr1 addr add 10.0.1.1/24 dev veth0
ip -net nsr1 addr add dead:1::1/64 dev veth0
ip -net $nsr1 addr add 10.0.1.1/24 dev veth0
ip -net $nsr1 addr add dead:1::1/64 dev veth0
ip -net nsr2 addr add 10.0.2.1/24 dev veth1
ip -net nsr2 addr add dead:2::1/64 dev veth1
ip -net $nsr2 addr add 10.0.2.1/24 dev veth1
ip -net $nsr2 addr add dead:2::1/64 dev veth1
# set different MTUs so we need to push packets coming from ns1 (large MTU)
# to ns2 (smaller MTU) to stack either to perform fragmentation (ip_no_pmtu_disc=1),
@ -106,49 +109,56 @@ do
esac
done
if ! ip -net nsr1 link set veth0 mtu $omtu; then
if ! ip -net $nsr1 link set veth0 mtu $omtu; then
exit 1
fi
ip -net ns1 link set eth0 mtu $omtu
ip -net $ns1 link set eth0 mtu $omtu
if ! ip -net nsr2 link set veth1 mtu $rmtu; then
if ! ip -net $nsr2 link set veth1 mtu $rmtu; then
exit 1
fi
ip -net ns2 link set eth0 mtu $rmtu
ip -net $ns2 link set eth0 mtu $rmtu
# transfer-net between nsr1 and nsr2.
# these addresses are not used for connections.
ip -net nsr1 addr add 192.168.10.1/24 dev veth1
ip -net nsr1 addr add fee1:2::1/64 dev veth1
ip -net $nsr1 addr add 192.168.10.1/24 dev veth1
ip -net $nsr1 addr add fee1:2::1/64 dev veth1
ip -net nsr2 addr add 192.168.10.2/24 dev veth0
ip -net nsr2 addr add fee1:2::2/64 dev veth0
ip -net $nsr2 addr add 192.168.10.2/24 dev veth0
ip -net $nsr2 addr add fee1:2::2/64 dev veth0
for i in 1 2; do
ip netns exec nsr$i sysctl net.ipv4.conf.veth0.forwarding=1 > /dev/null
ip netns exec nsr$i sysctl net.ipv4.conf.veth1.forwarding=1 > /dev/null
for i in 0 1; do
ip netns exec $nsr1 sysctl net.ipv4.conf.veth$i.forwarding=1 > /dev/null
ip netns exec $nsr2 sysctl net.ipv4.conf.veth$i.forwarding=1 > /dev/null
done
ip -net ns$i link set lo up
ip -net ns$i link set eth0 up
ip -net ns$i addr add 10.0.$i.99/24 dev eth0
ip -net ns$i route add default via 10.0.$i.1
ip -net ns$i addr add dead:$i::99/64 dev eth0
ip -net ns$i route add default via dead:$i::1
if ! ip netns exec ns$i sysctl net.ipv4.tcp_no_metrics_save=1 > /dev/null; then
for ns in $ns1 $ns2;do
ip -net $ns link set lo up
ip -net $ns link set eth0 up
if ! ip netns exec $ns sysctl net.ipv4.tcp_no_metrics_save=1 > /dev/null; then
echo "ERROR: Check Originator/Responder values (problem during address addition)"
exit 1
fi
# don't set ip DF bit for first two tests
ip netns exec ns$i sysctl net.ipv4.ip_no_pmtu_disc=1 > /dev/null
ip netns exec $ns sysctl net.ipv4.ip_no_pmtu_disc=1 > /dev/null
done
ip -net nsr1 route add default via 192.168.10.2
ip -net nsr2 route add default via 192.168.10.1
ip -net $ns1 addr add 10.0.1.99/24 dev eth0
ip -net $ns2 addr add 10.0.2.99/24 dev eth0
ip -net $ns1 route add default via 10.0.1.1
ip -net $ns2 route add default via 10.0.2.1
ip -net $ns1 addr add dead:1::99/64 dev eth0
ip -net $ns2 addr add dead:2::99/64 dev eth0
ip -net $ns1 route add default via dead:1::1
ip -net $ns2 route add default via dead:2::1
ip netns exec nsr1 nft -f - <<EOF
ip -net $nsr1 route add default via 192.168.10.2
ip -net $nsr2 route add default via 192.168.10.1
ip netns exec $nsr1 nft -f - <<EOF
table inet filter {
flowtable f1 {
hook ingress priority 0
@ -197,18 +207,18 @@ if [ $? -ne 0 ]; then
fi
# test basic connectivity
if ! ip netns exec ns1 ping -c 1 -q 10.0.2.99 > /dev/null; then
echo "ERROR: ns1 cannot reach ns2" 1>&2
if ! ip netns exec $ns1 ping -c 1 -q 10.0.2.99 > /dev/null; then
echo "ERROR: $ns1 cannot reach ns2" 1>&2
exit 1
fi
if ! ip netns exec ns2 ping -c 1 -q 10.0.1.99 > /dev/null; then
echo "ERROR: ns2 cannot reach ns1" 1>&2
if ! ip netns exec $ns2 ping -c 1 -q 10.0.1.99 > /dev/null; then
echo "ERROR: $ns2 cannot reach $ns1" 1>&2
exit 1
fi
if [ $ret -eq 0 ];then
echo "PASS: netns routing/connectivity: ns1 can reach ns2"
echo "PASS: netns routing/connectivity: $ns1 can reach $ns2"
fi
ns1in=$(mktemp)
@ -312,24 +322,24 @@ make_file "$ns2in"
# First test:
# No PMTU discovery, nsr1 is expected to fragment packets from ns1 to ns2 as needed.
if test_tcp_forwarding ns1 ns2; then
if test_tcp_forwarding $ns1 $ns2; then
echo "PASS: flow offloaded for ns1/ns2"
else
echo "FAIL: flow offload for ns1/ns2:" 1>&2
ip netns exec nsr1 nft list ruleset
ip netns exec $nsr1 nft list ruleset
ret=1
fi
# delete default route, i.e. ns2 won't be able to reach ns1 and
# will depend on ns1 being masqueraded in nsr1.
# expect ns1 has nsr1 address.
ip -net ns2 route del default via 10.0.2.1
ip -net ns2 route del default via dead:2::1
ip -net ns2 route add 192.168.10.1 via 10.0.2.1
ip -net $ns2 route del default via 10.0.2.1
ip -net $ns2 route del default via dead:2::1
ip -net $ns2 route add 192.168.10.1 via 10.0.2.1
# Second test:
# Same, but with NAT enabled.
ip netns exec nsr1 nft -f - <<EOF
ip netns exec $nsr1 nft -f - <<EOF
table ip nat {
chain prerouting {
type nat hook prerouting priority 0; policy accept;
@ -343,47 +353,47 @@ table ip nat {
}
EOF
if test_tcp_forwarding_nat ns1 ns2; then
if test_tcp_forwarding_nat $ns1 $ns2; then
echo "PASS: flow offloaded for ns1/ns2 with NAT"
else
echo "FAIL: flow offload for ns1/ns2 with NAT" 1>&2
ip netns exec nsr1 nft list ruleset
ip netns exec $nsr1 nft list ruleset
ret=1
fi
# Third test:
# Same as second test, but with PMTU discovery enabled.
handle=$(ip netns exec nsr1 nft -a list table inet filter | grep something-to-grep-for | cut -d \# -f 2)
handle=$(ip netns exec $nsr1 nft -a list table inet filter | grep something-to-grep-for | cut -d \# -f 2)
if ! ip netns exec nsr1 nft delete rule inet filter forward $handle; then
if ! ip netns exec $nsr1 nft delete rule inet filter forward $handle; then
echo "FAIL: Could not delete large-packet accept rule"
exit 1
fi
ip netns exec ns1 sysctl net.ipv4.ip_no_pmtu_disc=0 > /dev/null
ip netns exec ns2 sysctl net.ipv4.ip_no_pmtu_disc=0 > /dev/null
ip netns exec $ns1 sysctl net.ipv4.ip_no_pmtu_disc=0 > /dev/null
ip netns exec $ns2 sysctl net.ipv4.ip_no_pmtu_disc=0 > /dev/null
if test_tcp_forwarding_nat ns1 ns2; then
if test_tcp_forwarding_nat $ns1 $ns2; then
echo "PASS: flow offloaded for ns1/ns2 with NAT and pmtu discovery"
else
echo "FAIL: flow offload for ns1/ns2 with NAT and pmtu discovery" 1>&2
ip netns exec nsr1 nft list ruleset
ip netns exec $nsr1 nft list ruleset
fi
# Another test:
# Add bridge interface br0 to Router1, with NAT enabled.
ip -net nsr1 link add name br0 type bridge
ip -net nsr1 addr flush dev veth0
ip -net nsr1 link set up dev veth0
ip -net nsr1 link set veth0 master br0
ip -net nsr1 addr add 10.0.1.1/24 dev br0
ip -net nsr1 addr add dead:1::1/64 dev br0
ip -net nsr1 link set up dev br0
ip -net $nsr1 link add name br0 type bridge
ip -net $nsr1 addr flush dev veth0
ip -net $nsr1 link set up dev veth0
ip -net $nsr1 link set veth0 master br0
ip -net $nsr1 addr add 10.0.1.1/24 dev br0
ip -net $nsr1 addr add dead:1::1/64 dev br0
ip -net $nsr1 link set up dev br0
ip netns exec nsr1 sysctl net.ipv4.conf.br0.forwarding=1 > /dev/null
ip netns exec $nsr1 sysctl net.ipv4.conf.br0.forwarding=1 > /dev/null
# br0 with NAT enabled.
ip netns exec nsr1 nft -f - <<EOF
ip netns exec $nsr1 nft -f - <<EOF
flush table ip nat
table ip nat {
chain prerouting {
@ -398,59 +408,59 @@ table ip nat {
}
EOF
if test_tcp_forwarding_nat ns1 ns2; then
if test_tcp_forwarding_nat $ns1 $ns2; then
echo "PASS: flow offloaded for ns1/ns2 with bridge NAT"
else
echo "FAIL: flow offload for ns1/ns2 with bridge NAT" 1>&2
ip netns exec nsr1 nft list ruleset
ip netns exec $nsr1 nft list ruleset
ret=1
fi
# Another test:
# Add bridge interface br0 to Router1, with NAT and VLAN.
ip -net nsr1 link set veth0 nomaster
ip -net nsr1 link set down dev veth0
ip -net nsr1 link add link veth0 name veth0.10 type vlan id 10
ip -net nsr1 link set up dev veth0
ip -net nsr1 link set up dev veth0.10
ip -net nsr1 link set veth0.10 master br0
ip -net $nsr1 link set veth0 nomaster
ip -net $nsr1 link set down dev veth0
ip -net $nsr1 link add link veth0 name veth0.10 type vlan id 10
ip -net $nsr1 link set up dev veth0
ip -net $nsr1 link set up dev veth0.10
ip -net $nsr1 link set veth0.10 master br0
ip -net ns1 addr flush dev eth0
ip -net ns1 link add link eth0 name eth0.10 type vlan id 10
ip -net ns1 link set eth0 up
ip -net ns1 link set eth0.10 up
ip -net ns1 addr add 10.0.1.99/24 dev eth0.10
ip -net ns1 route add default via 10.0.1.1
ip -net ns1 addr add dead:1::99/64 dev eth0.10
ip -net $ns1 addr flush dev eth0
ip -net $ns1 link add link eth0 name eth0.10 type vlan id 10
ip -net $ns1 link set eth0 up
ip -net $ns1 link set eth0.10 up
ip -net $ns1 addr add 10.0.1.99/24 dev eth0.10
ip -net $ns1 route add default via 10.0.1.1
ip -net $ns1 addr add dead:1::99/64 dev eth0.10
if test_tcp_forwarding_nat ns1 ns2; then
if test_tcp_forwarding_nat $ns1 $ns2; then
echo "PASS: flow offloaded for ns1/ns2 with bridge NAT and VLAN"
else
echo "FAIL: flow offload for ns1/ns2 with bridge NAT and VLAN" 1>&2
ip netns exec nsr1 nft list ruleset
ip netns exec $nsr1 nft list ruleset
ret=1
fi
# restore test topology (remove bridge and VLAN)
ip -net nsr1 link set veth0 nomaster
ip -net nsr1 link set veth0 down
ip -net nsr1 link set veth0.10 down
ip -net nsr1 link delete veth0.10 type vlan
ip -net nsr1 link delete br0 type bridge
ip -net ns1 addr flush dev eth0.10
ip -net ns1 link set eth0.10 down
ip -net ns1 link set eth0 down
ip -net ns1 link delete eth0.10 type vlan
ip -net $nsr1 link set veth0 nomaster
ip -net $nsr1 link set veth0 down
ip -net $nsr1 link set veth0.10 down
ip -net $nsr1 link delete veth0.10 type vlan
ip -net $nsr1 link delete br0 type bridge
ip -net $ns1 addr flush dev eth0.10
ip -net $ns1 link set eth0.10 down
ip -net $ns1 link set eth0 down
ip -net $ns1 link delete eth0.10 type vlan
# restore address in ns1 and nsr1
ip -net ns1 link set eth0 up
ip -net ns1 addr add 10.0.1.99/24 dev eth0
ip -net ns1 route add default via 10.0.1.1
ip -net ns1 addr add dead:1::99/64 dev eth0
ip -net ns1 route add default via dead:1::1
ip -net nsr1 addr add 10.0.1.1/24 dev veth0
ip -net nsr1 addr add dead:1::1/64 dev veth0
ip -net nsr1 link set up dev veth0
ip -net $ns1 link set eth0 up
ip -net $ns1 addr add 10.0.1.99/24 dev eth0
ip -net $ns1 route add default via 10.0.1.1
ip -net $ns1 addr add dead:1::99/64 dev eth0
ip -net $ns1 route add default via dead:1::1
ip -net $nsr1 addr add 10.0.1.1/24 dev veth0
ip -net $nsr1 addr add dead:1::1/64 dev veth0
ip -net $nsr1 link set up dev veth0
KEY_SHA="0x"$(ps -xaf | sha1sum | cut -d " " -f 1)
KEY_AES="0x"$(ps -xaf | md5sum | cut -d " " -f 1)
@ -480,23 +490,23 @@ do_esp() {
}
do_esp nsr1 192.168.10.1 192.168.10.2 10.0.1.0/24 10.0.2.0/24 $SPI1 $SPI2
do_esp $nsr1 192.168.10.1 192.168.10.2 10.0.1.0/24 10.0.2.0/24 $SPI1 $SPI2
do_esp nsr2 192.168.10.2 192.168.10.1 10.0.2.0/24 10.0.1.0/24 $SPI2 $SPI1
do_esp $nsr2 192.168.10.2 192.168.10.1 10.0.2.0/24 10.0.1.0/24 $SPI2 $SPI1
ip netns exec nsr1 nft delete table ip nat
ip netns exec $nsr1 nft delete table ip nat
# restore default routes
ip -net ns2 route del 192.168.10.1 via 10.0.2.1
ip -net ns2 route add default via 10.0.2.1
ip -net ns2 route add default via dead:2::1
ip -net $ns2 route del 192.168.10.1 via 10.0.2.1
ip -net $ns2 route add default via 10.0.2.1
ip -net $ns2 route add default via dead:2::1
if test_tcp_forwarding ns1 ns2; then
if test_tcp_forwarding $ns1 $ns2; then
echo "PASS: ipsec tunnel mode for ns1/ns2"
else
echo "FAIL: ipsec tunnel mode for ns1/ns2"
ip netns exec nsr1 nft list ruleset 1>&2
ip netns exec nsr1 cat /proc/net/xfrm_stat 1>&2
ip netns exec $nsr1 nft list ruleset 1>&2
ip netns exec $nsr1 cat /proc/net/xfrm_stat 1>&2
fi
exit $ret