selftests/net: convert vrf_route_leaking.sh to run it in unique namespace

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hangbin Liu 2023-12-06 15:07:59 +08:00 committed by David S. Miller
parent 5ece837174
commit bedc99abca

View File

@ -58,6 +58,7 @@
# to send an ICMP error back to the source when the ttl of a packet reaches 1 # to send an ICMP error back to the source when the ttl of a packet reaches 1
# while it is forwarded between different vrfs. # while it is forwarded between different vrfs.
source lib.sh
VERBOSE=0 VERBOSE=0
PAUSE_ON_FAIL=no PAUSE_ON_FAIL=no
DEFAULT_TTYPE=sym DEFAULT_TTYPE=sym
@ -171,11 +172,7 @@ run_cmd_grep()
cleanup() cleanup()
{ {
local ns cleanup_ns $h1 $h2 $r1 $r2
for ns in h1 h2 r1 r2; do
ip netns del $ns 2>/dev/null
done
} }
setup_vrf() setup_vrf()
@ -212,72 +209,69 @@ setup_sym()
# #
# create nodes as namespaces # create nodes as namespaces
# setup_ns h1 h2 r1
for ns in h1 h2 r1; do for ns in $h1 $h2 $r1; do
ip netns add $ns if echo $ns | grep -q h[12]-; then
ip -netns $ns link set lo up ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=0
case "${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 ip netns exec $ns sysctl -q -w net.ipv6.conf.all.keep_addr_on_down=1
;; else
r1) ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1 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 ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1
esac fi
done done
# #
# create interconnects # create interconnects
# #
ip -netns h1 link add eth0 type veth peer name r1h1 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 set r1h1 netns $r1 name eth0 up
ip -netns h2 link add eth0 type veth peer name r1h2 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 set r1h2 netns $r1 name eth1 up
# #
# h1 # h1
# #
ip -netns h1 addr add dev eth0 ${H1_N1_IP}/24 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 -6 addr add dev eth0 ${H1_N1_IP6}/64 nodad
ip -netns h1 link set eth0 up ip -netns $h1 link set eth0 up
# h1 to h2 via r1 # h1 to h2 via r1
ip -netns h1 route add ${H2_N2} via ${R1_N1_IP} 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 ip -netns $h1 -6 route add ${H2_N2_6} via "${R1_N1_IP6}" dev eth0
# #
# h2 # h2
# #
ip -netns h2 addr add dev eth0 ${H2_N2_IP}/24 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 -6 addr add dev eth0 ${H2_N2_IP6}/64 nodad
ip -netns h2 link set eth0 up ip -netns $h2 link set eth0 up
# h2 to h1 via r1 # h2 to h1 via r1
ip -netns h2 route add default via ${R1_N2_IP} 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 ip -netns $h2 -6 route add default via ${R1_N2_IP6} dev eth0
# #
# r1 # r1
# #
setup_vrf r1 setup_vrf $r1
create_vrf r1 blue 1101 create_vrf $r1 blue 1101
create_vrf r1 red 1102 create_vrf $r1 red 1102
ip -netns r1 link set mtu 1400 dev eth1 ip -netns $r1 link set mtu 1400 dev eth1
ip -netns r1 link set eth0 vrf blue up ip -netns $r1 link set eth0 vrf blue up
ip -netns r1 link set eth1 vrf red up ip -netns $r1 link set eth1 vrf red up
ip -netns r1 addr add dev eth0 ${R1_N1_IP}/24 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 -6 addr add dev eth0 ${R1_N1_IP6}/64 nodad
ip -netns r1 addr add dev eth1 ${R1_N2_IP}/24 ip -netns $r1 addr add dev eth1 ${R1_N2_IP}/24
ip -netns r1 -6 addr add dev eth1 ${R1_N2_IP6}/64 nodad ip -netns $r1 -6 addr add dev eth1 ${R1_N2_IP6}/64 nodad
# Route leak from blue to red # Route leak from blue to red
ip -netns r1 route add vrf blue ${H2_N2} 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 ip -netns $r1 -6 route add vrf blue ${H2_N2_6} dev red
# Route leak from red to blue # Route leak from red to blue
ip -netns r1 route add vrf red ${H1_N1} 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 ip -netns $r1 -6 route add vrf red ${H1_N1_6} dev blue
# Wait for ip config to settle # Wait for ip config to settle
@ -293,90 +287,87 @@ setup_asym()
# #
# create nodes as namespaces # create nodes as namespaces
# setup_ns h1 h2 r1 r2
for ns in h1 h2 r1 r2; do for ns in $h1 $h2 $r1 $r2; do
ip netns add $ns if echo $ns | grep -q h[12]-; then
ip -netns $ns link set lo up ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=0
case "${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 ip netns exec $ns sysctl -q -w net.ipv6.conf.all.keep_addr_on_down=1
;; else
r[12]) ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1 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 ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1
esac fi
done done
# #
# create interconnects # create interconnects
# #
ip -netns h1 link add eth0 type veth peer name r1h1 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 set r1h1 netns $r1 name eth0 up
ip -netns h1 link add eth1 type veth peer name r2h1 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 set r2h1 netns $r2 name eth0 up
ip -netns h2 link add eth0 type veth peer name r1h2 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 set r1h2 netns $r1 name eth1 up
ip -netns h2 link add eth1 type veth peer name r2h2 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 set r2h2 netns $r2 name eth1 up
# #
# h1 # h1
# #
ip -netns h1 link add br0 type bridge ip -netns $h1 link add br0 type bridge
ip -netns h1 link set br0 up ip -netns $h1 link set br0 up
ip -netns h1 addr add dev br0 ${H1_N1_IP}/24 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 -6 addr add dev br0 ${H1_N1_IP6}/64 nodad
ip -netns h1 link set eth0 master br0 up ip -netns $h1 link set eth0 master br0 up
ip -netns h1 link set eth1 master br0 up ip -netns $h1 link set eth1 master br0 up
# h1 to h2 via r1 # h1 to h2 via r1
ip -netns h1 route add ${H2_N2} via ${R1_N1_IP} 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 ip -netns $h1 -6 route add ${H2_N2_6} via "${R1_N1_IP6}" dev br0
# #
# h2 # h2
# #
ip -netns h2 link add br0 type bridge ip -netns $h2 link add br0 type bridge
ip -netns h2 link set br0 up ip -netns $h2 link set br0 up
ip -netns h2 addr add dev br0 ${H2_N2_IP}/24 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 -6 addr add dev br0 ${H2_N2_IP6}/64 nodad
ip -netns h2 link set eth0 master br0 up ip -netns $h2 link set eth0 master br0 up
ip -netns h2 link set eth1 master br0 up ip -netns $h2 link set eth1 master br0 up
# h2 to h1 via r2 # h2 to h1 via r2
ip -netns h2 route add default via ${R2_N2_IP} 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 ip -netns $h2 -6 route add default via ${R2_N2_IP6} dev br0
# #
# r1 # r1
# #
setup_vrf r1 setup_vrf $r1
create_vrf r1 blue 1101 create_vrf $r1 blue 1101
create_vrf r1 red 1102 create_vrf $r1 red 1102
ip -netns r1 link set mtu 1400 dev eth1 ip -netns $r1 link set mtu 1400 dev eth1
ip -netns r1 link set eth0 vrf blue up ip -netns $r1 link set eth0 vrf blue up
ip -netns r1 link set eth1 vrf red up ip -netns $r1 link set eth1 vrf red up
ip -netns r1 addr add dev eth0 ${R1_N1_IP}/24 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 -6 addr add dev eth0 ${R1_N1_IP6}/64 nodad
ip -netns r1 addr add dev eth1 ${R1_N2_IP}/24 ip -netns $r1 addr add dev eth1 ${R1_N2_IP}/24
ip -netns r1 -6 addr add dev eth1 ${R1_N2_IP6}/64 nodad ip -netns $r1 -6 addr add dev eth1 ${R1_N2_IP6}/64 nodad
# Route leak from blue to red # Route leak from blue to red
ip -netns r1 route add vrf blue ${H2_N2} 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 ip -netns $r1 -6 route add vrf blue ${H2_N2_6} dev red
# No route leak from red to blue # No route leak from red to blue
# #
# r2 # r2
# #
ip -netns r2 addr add dev eth0 ${R2_N1_IP}/24 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 -6 addr add dev eth0 ${R2_N1_IP6}/64 nodad
ip -netns r2 addr add dev eth1 ${R2_N2_IP}/24 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 -6 addr add dev eth1 ${R2_N2_IP6}/64 nodad
# Wait for ip config to settle # Wait for ip config to settle
sleep 2 sleep 2
@ -384,14 +375,14 @@ setup_asym()
check_connectivity() 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" log_test $? 0 "Basic IPv4 connectivity"
return $? return $?
} }
check_connectivity6() check_connectivity6()
{ {
ip netns exec h1 "${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" log_test $? 0 "Basic IPv6 connectivity"
return $? return $?
} }
@ -426,7 +417,7 @@ ipv4_traceroute()
check_connectivity || return check_connectivity || return
run_cmd_grep "${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" log_test $? 0 "Traceroute reports a hop on r1"
} }
@ -449,7 +440,7 @@ ipv6_traceroute()
check_connectivity6 || return check_connectivity6 || return
run_cmd_grep "${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" log_test $? 0 "Traceroute6 reports a hop on r1"
} }
@ -470,7 +461,7 @@ ipv4_ping_ttl()
check_connectivity || return 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" log_test $? 0 "Ping received ICMP ttl exceeded"
} }
@ -491,7 +482,7 @@ ipv4_ping_frag()
check_connectivity || return 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" log_test $? 0 "Ping received ICMP Frag needed"
} }
@ -512,7 +503,7 @@ ipv6_ping_ttl()
check_connectivity6 || return check_connectivity6 || return
run_cmd_grep "Time exceeded: Hop limit" ip netns exec h1 "${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" log_test $? 0 "Ping received ICMP Hop limit"
} }
@ -533,7 +524,7 @@ ipv6_ping_frag()
check_connectivity6 || return check_connectivity6 || return
run_cmd_grep "Packet too big" ip netns exec h1 "${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" log_test $? 0 "Ping received ICMP Packet too big"
} }