[PATCH net-next 7/9] selftests/net: convert vrf_route_leaking.sh to run it in unique namespace

Hangbin Liu
2023-12-06T07:08:41Z

Here is the test result after conversion.

]# ./vrf_route_leaking.sh

###########################################################################
IPv4 (sym route): VRF ICMP ttl error route lookup ping
###########################################################################

TEST: Basic IPv4 connectivity [ OK ]
TEST: Ping received ICMP ttl exceeded [ OK ]

...

TEST: Basic IPv6 connectivity [ OK ]
TEST: Traceroute6 reports a hop on r1 [ OK ]

Tests passed: 18
Tests failed: 0

Acked-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
.../selftests/net/vrf_route_leaking.sh | 201 +++++++++---------
1 file changed, 96 insertions(+), 105 deletions(-)

diff --git a/tools/testing/selftests/net/vrf_route_leaking.sh b/tools/testing/selftests/net/vrf_route_leaking.sh
index dedc52562b4f..2da32f4c479b 100755
--- a/tools/testing/selftests/net/vrf_route_leaking.sh
+++ b/tools/testing/selftests/net/vrf_route_leaking.sh
@@ -58,6 +58,7 @@
# to send an ICMP error back to the source when the ttl of a packet reaches 1
# while it is forwarded between different vrfs.

+source lib.sh
VERBOSE=0
PAUSE_ON_FAIL=no
DEFAULT_TTYPE=sym
@@ -171,11 +172,7 @@ run_cmd_grep()

cleanup()
{
- local ns
-
- for ns in h1 h2 r1 r2; do
- ip netns del $ns 2>/dev/null
- done
+ cleanup_ns $h1 $h2 $r1 $r2
}

setup_vrf()
@@ -212,72 +209,69 @@ setup_sym()

#
# create nodes as namespaces
- #
- for ns in h1 h2 r1; do
- ip netns add $ns
- ip -netns $ns link set lo up
-
- case "${ns}" in
- h[12]) ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=0
- ip netns exec $ns sysctl -q -w net.ipv6.conf.all.keep_addr_on_down=1
- ;;
- r1) ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1
- ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1
- esac
+ setup_ns h1 h2 r1
+ for ns in $h1 $h2 $r1; do
+ if echo $ns | grep -q h[12]-; then
+ ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=0
+ ip netns exec $ns sysctl -q -w net.ipv6.conf.all.keep_addr_on_down=1
+ else
+ ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1
+ ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1
+ fi
done

#
# create interconnects
#
- ip -netns h1 link add eth0 type veth peer name r1h1
- ip -netns h1 link set r1h1 netns r1 name eth0 up
+ ip -netns $h1 link add eth0 type veth peer name r1h1
+ ip -netns $h1 link set r1h1 netns $r1 name eth0 up

- ip -netns h2 link add eth0 type veth peer name r1h2
- ip -netns h2 link set r1h2 netns r1 name eth1 up
+ ip -netns $h2 link add eth0 type veth peer name r1h2
+ ip -netns $h2 link set r1h2 netns $r1 name eth1 up

#
# h1
#
- ip -netns h1 addr add dev eth0 ${H1_N1_IP}/24
- ip -netns h1 -6 addr add dev eth0 ${H1_N1_IP6}/64 nodad
- ip -netns h1 link set eth0 up
+ ip -netns $h1 addr add dev eth0 ${H1_N1_IP}/24
+ ip -netns $h1 -6 addr add dev eth0 ${H1_N1_IP6}/64 nodad
+ ip -netns $h1 link set eth0 up

# h1 to h2 via r1
- ip -netns h1 route add ${H2_N2} via ${R1_N1_IP} dev eth0
- ip -netns h1 -6 route add ${H2_N2_6} via "${R1_N1_IP6}" dev eth0
+ ip -netns $h1 route add ${H2_N2} via ${R1_N1_IP} dev eth0
+ ip -netns $h1 -6 route add ${H2_N2_6} via "${R1_N1_IP6}" dev eth0

#
# h2
#
- ip -netns h2 addr add dev eth0 ${H2_N2_IP}/24
- ip -netns h2 -6 addr add dev eth0 ${H2_N2_IP6}/64 nodad
- ip -netns h2 link set eth0 up
+ ip -netns $h2 addr add dev eth0 ${H2_N2_IP}/24
+ ip -netns $h2 -6 addr add dev eth0 ${H2_N2_IP6}/64 nodad
+ ip -netns $h2 link set eth0 up

# h2 to h1 via r1
- ip -netns h2 route add default via ${R1_N2_IP} dev eth0
- ip -netns h2 -6 route add default via ${R1_N2_IP6} dev eth0
+ ip -netns $h2 route add default via ${R1_N2_IP} dev eth0
+ ip -netns $h2 -6 route add default via ${R1_N2_IP6} dev eth0

#
# r1
#
- setup_vrf r1
- create_vrf r1 blue 1101
- create_vrf r1 red 1102
- ip -netns r1 link set mtu 1400 dev eth1
- ip -netns r1 link set eth0 vrf blue up
- ip -netns r1 link set eth1 vrf red up
- ip -netns r1 addr add dev eth0 ${R1_N1_IP}/24
- ip -netns r1 -6 addr add dev eth0 ${R1_N1_IP6}/64 nodad
- ip -netns r1 addr add dev eth1 ${R1_N2_IP}/24
- ip -netns r1 -6 addr add dev eth1 ${R1_N2_IP6}/64 nodad
+ setup_vrf $r1
+ create_vrf $r1 blue 1101
+ create_vrf $r1 red 1102
+ ip -netns $r1 link set mtu 1400 dev eth1
+ ip -netns $r1 link set eth0 vrf blue up
+ ip -netns $r1 link set eth1 vrf red up
+ ip -netns $r1 addr add dev eth0 ${R1_N1_IP}/24
+ ip -netns $r1 -6 addr add dev eth0 ${R1_N1_IP6}/64 nodad
+ ip -netns $r1 addr add dev eth1 ${R1_N2_IP}/24
+ ip -netns $r1 -6 addr add dev eth1 ${R1_N2_IP6}/64 nodad

# Route leak from blue to red
- ip -netns r1 route add vrf blue ${H2_N2} dev red
- ip -netns r1 -6 route add vrf blue ${H2_N2_6} dev red
+ ip -netns $r1 route add vrf blue ${H2_N2} dev red
+ ip -netns $r1 -6 route add vrf blue ${H2_N2_6} dev red

# Route leak from red to blue
- ip -netns r1 route add vrf red ${H1_N1} dev blue
- ip -netns r1 -6 route add vrf red ${H1_N1_6} dev blue
+ ip -netns $r1 route add vrf red ${H1_N1} dev blue
+ ip -netns $r1 -6 route add vrf red ${H1_N1_6} dev blue

# Wait for ip config to settle
@@ -293,90 +287,87 @@ setup_asym()

#
# create nodes as namespaces
- #
- for ns in h1 h2 r1 r2; do
- ip netns add $ns
- ip -netns $ns link set lo up
-
- case "${ns}" in
- h[12]) ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=0
- ip netns exec $ns sysctl -q -w net.ipv6.conf.all.keep_addr_on_down=1
- ;;
- r[12]) ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1
- ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1
- esac
+ setup_ns h1 h2 r1 r2
+ for ns in $h1 $h2 $r1 $r2; do
+ if echo $ns | grep -q h[12]-; then
+ ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=0
+ ip netns exec $ns sysctl -q -w net.ipv6.conf.all.keep_addr_on_down=1
+ else
+ ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1
+ ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1
+ fi
done

#
# create interconnects
#
- ip -netns h1 link add eth0 type veth peer name r1h1
- ip -netns h1 link set r1h1 netns r1 name eth0 up
+ ip -netns $h1 link add eth0 type veth peer name r1h1
+ ip -netns $h1 link set r1h1 netns $r1 name eth0 up

- ip -netns h1 link add eth1 type veth peer name r2h1
- ip -netns h1 link set r2h1 netns r2 name eth0 up
+ ip -netns $h1 link add eth1 type veth peer name r2h1
+ ip -netns $h1 link set r2h1 netns $r2 name eth0 up

- ip -netns h2 link add eth0 type veth peer name r1h2
- ip -netns h2 link set r1h2 netns r1 name eth1 up
+ ip -netns $h2 link add eth0 type veth peer name r1h2
+ ip -netns $h2 link set r1h2 netns $r1 name eth1 up

- ip -netns h2 link add eth1 type veth peer name r2h2
- ip -netns h2 link set r2h2 netns r2 name eth1 up
+ ip -netns $h2 link add eth1 type veth peer name r2h2
+ ip -netns $h2 link set r2h2 netns $r2 name eth1 up

#
# h1
#
- ip -netns h1 link add br0 type bridge
- ip -netns h1 link set br0 up
- ip -netns h1 addr add dev br0 ${H1_N1_IP}/24
- ip -netns h1 -6 addr add dev br0 ${H1_N1_IP6}/64 nodad
- ip -netns h1 link set eth0 master br0 up
- ip -netns h1 link set eth1 master br0 up
+ ip -netns $h1 link add br0 type bridge
+ ip -netns $h1 link set br0 up
+ ip -netns $h1 addr add dev br0 ${H1_N1_IP}/24
+ ip -netns $h1 -6 addr add dev br0 ${H1_N1_IP6}/64 nodad
+ ip -netns $h1 link set eth0 master br0 up
+ ip -netns $h1 link set eth1 master br0 up

# h1 to h2 via r1
- ip -netns h1 route add ${H2_N2} via ${R1_N1_IP} dev br0
- ip -netns h1 -6 route add ${H2_N2_6} via "${R1_N1_IP6}" dev br0
+ ip -netns $h1 route add ${H2_N2} via ${R1_N1_IP} dev br0
+ ip -netns $h1 -6 route add ${H2_N2_6} via "${R1_N1_IP6}" dev br0

#
# h2
#
- ip -netns h2 link add br0 type bridge
- ip -netns h2 link set br0 up
- ip -netns h2 addr add dev br0 ${H2_N2_IP}/24
- ip -netns h2 -6 addr add dev br0 ${H2_N2_IP6}/64 nodad
- ip -netns h2 link set eth0 master br0 up
- ip -netns h2 link set eth1 master br0 up
+ ip -netns $h2 link add br0 type bridge
+ ip -netns $h2 link set br0 up
+ ip -netns $h2 addr add dev br0 ${H2_N2_IP}/24
+ ip -netns $h2 -6 addr add dev br0 ${H2_N2_IP6}/64 nodad
+ ip -netns $h2 link set eth0 master br0 up
+ ip -netns $h2 link set eth1 master br0 up

# h2 to h1 via r2
- ip -netns h2 route add default via ${R2_N2_IP} dev br0
- ip -netns h2 -6 route add default via ${R2_N2_IP6} dev br0
+ ip -netns $h2 route add default via ${R2_N2_IP} dev br0
+ ip -netns $h2 -6 route add default via ${R2_N2_IP6} dev br0

#
# r1
#
- setup_vrf r1
- create_vrf r1 blue 1101
- create_vrf r1 red 1102
- ip -netns r1 link set mtu 1400 dev eth1
- ip -netns r1 link set eth0 vrf blue up
- ip -netns r1 link set eth1 vrf red up
- ip -netns r1 addr add dev eth0 ${R1_N1_IP}/24
- ip -netns r1 -6 addr add dev eth0 ${R1_N1_IP6}/64 nodad
- ip -netns r1 addr add dev eth1 ${R1_N2_IP}/24
- ip -netns r1 -6 addr add dev eth1 ${R1_N2_IP6}/64 nodad
+ setup_vrf $r1
+ create_vrf $r1 blue 1101
+ create_vrf $r1 red 1102
+ ip -netns $r1 link set mtu 1400 dev eth1
+ ip -netns $r1 link set eth0 vrf blue up
+ ip -netns $r1 link set eth1 vrf red up
+ ip -netns $r1 addr add dev eth0 ${R1_N1_IP}/24
+ ip -netns $r1 -6 addr add dev eth0 ${R1_N1_IP6}/64 nodad
+ ip -netns $r1 addr add dev eth1 ${R1_N2_IP}/24
+ ip -netns $r1 -6 addr add dev eth1 ${R1_N2_IP6}/64 nodad

# Route leak from blue to red
- ip -netns r1 route add vrf blue ${H2_N2} dev red
- ip -netns r1 -6 route add vrf blue ${H2_N2_6} dev red
+ ip -netns $r1 route add vrf blue ${H2_N2} dev red
+ ip -netns $r1 -6 route add vrf blue ${H2_N2_6} dev red

# No route leak from red to blue

#
# r2
#
- ip -netns r2 addr add dev eth0 ${R2_N1_IP}/24
- ip -netns r2 -6 addr add dev eth0 ${R2_N1_IP6}/64 nodad
- ip -netns r2 addr add dev eth1 ${R2_N2_IP}/24
- ip -netns r2 -6 addr add dev eth1 ${R2_N2_IP6}/64 nodad
+ ip -netns $r2 addr add dev eth0 ${R2_N1_IP}/24
+ ip -netns $r2 -6 addr add dev eth0 ${R2_N1_IP6}/64 nodad
+ ip -netns $r2 addr add dev eth1 ${R2_N2_IP}/24
+ ip -netns $r2 -6 addr add dev eth1 ${R2_N2_IP6}/64 nodad

# Wait for ip config to settle
sleep 2
@@ -384,14 +375,14 @@ setup_asym()

check_connectivity()
{
- ip netns exec h1 ping -c1 -w1 ${H2_N2_IP} >/dev/null 2>&1
+ ip netns exec $h1 ping -c1 -w1 ${H2_N2_IP} >/dev/null 2>&1
log_test $? 0 "Basic IPv4 connectivity"
return $?
}

check_connectivity6()
{
- ip netns exec h1 "${ping6}" -c1 -w1 ${H2_N2_IP6} >/dev/null 2>&1
+ ip netns exec $h1 "${ping6}" -c1 -w1 ${H2_N2_IP6} >/dev/null 2>&1
log_test $? 0 "Basic IPv6 connectivity"
return $?
}
@@ -426,7 +417,7 @@ ipv4_traceroute()

check_connectivity || return

- run_cmd_grep "${R1_N1_IP}" ip netns exec h1 traceroute ${H2_N2_IP}
+ run_cmd_grep "${R1_N1_IP}" ip netns exec $h1 traceroute ${H2_N2_IP}
log_test $? 0 "Traceroute reports a hop on r1"
}

@@ -449,7 +440,7 @@ ipv6_traceroute()

check_connectivity6 || return

- run_cmd_grep "${R1_N1_IP6}" ip netns exec h1 traceroute6 ${H2_N2_IP6}
+ run_cmd_grep "${R1_N1_IP6}" ip netns exec $h1 traceroute6 ${H2_N2_IP6}
log_test $? 0 "Traceroute6 reports a hop on r1"
}

@@ -470,7 +461,7 @@ ipv4_ping_ttl()

check_connectivity || return

- run_cmd_grep "Time to live exceeded" ip netns exec h1 ping -t1 -c1 -W2 ${H2_N2_IP}
+ run_cmd_grep "Time to live exceeded" ip netns exec $h1 ping -t1 -c1 -W2 ${H2_N2_IP}
log_test $? 0 "Ping received ICMP ttl exceeded"
}

@@ -491,7 +482,7 @@ ipv4_ping_frag()

check_connectivity || return

- run_cmd_grep "Frag needed" ip netns exec h1 ping -s 1450 -Mdo -c1 -W2 ${H2_N2_IP}
+ run_cmd_grep "Frag needed" ip netns exec $h1 ping -s 1450 -Mdo -c1 -W2 ${H2_N2_IP}
log_test $? 0 "Ping received ICMP Frag needed"
}

@@ -512,7 +503,7 @@ ipv6_ping_ttl()

check_connectivity6 || return

- run_cmd_grep "Time exceeded: Hop limit" ip netns exec h1 "${ping6}" -t1 -c1 -W2 ${H2_N2_IP6}
+ run_cmd_grep "Time exceeded: Hop limit" ip netns exec $h1 "${ping6}" -t1 -c1 -W2 ${H2_N2_IP6}
log_test $? 0 "Ping received ICMP Hop limit"
}

@@ -533,7 +524,7 @@ ipv6_ping_frag()

check_connectivity6 || return

- run_cmd_grep "Packet too big" ip netns exec h1 "${ping6}" -s 1450 -Mdo -c1 -W2 ${H2_N2_IP6}
+ run_cmd_grep "Packet too big" ip netns exec $h1 "${ping6}" -s 1450 -Mdo -c1 -W2 ${H2_N2_IP6}
log_test $? 0 "Ping received ICMP Packet too big"
}

--
2.43.0