Verify that the MacAuth/MAB mechanism works by adding a FDB entry with the locked flag set, denying access until the FDB entry is replaced with a FDB entry without the locked flag set. Also verify that FDB entries cannot roam from an unlocked port to a locked port.
Add test of blackhole fdb entries, verifying that there is no forwarding to a blackhole entry from any port, and that the blackhole entry can be replaced.
Signed-off-by: Hans J. Schultz netdev@kapio-technology.com --- .../selftests/drivers/net/dsa/Makefile | 1 + .../testing/selftests/net/forwarding/Makefile | 1 + .../net/forwarding/bridge_blackhole_fdb.sh | 131 ++++++++++++++++++ .../net/forwarding/bridge_locked_port.sh | 99 ++++++++++++- tools/testing/selftests/net/forwarding/lib.sh | 17 +++ 5 files changed, 248 insertions(+), 1 deletion(-) create mode 100755 tools/testing/selftests/net/forwarding/bridge_blackhole_fdb.sh
diff --git a/tools/testing/selftests/drivers/net/dsa/Makefile b/tools/testing/selftests/drivers/net/dsa/Makefile index c393e7b73805..c0a75d869763 100644 --- a/tools/testing/selftests/drivers/net/dsa/Makefile +++ b/tools/testing/selftests/drivers/net/dsa/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT
TEST_PROGS = bridge_locked_port.sh \ + bridge_blackhole_fdb.sh \ bridge_mdb.sh \ bridge_mld.sh \ bridge_vlan_aware.sh \ diff --git a/tools/testing/selftests/net/forwarding/Makefile b/tools/testing/selftests/net/forwarding/Makefile index a9c5c1be5088..7d832020937f 100644 --- a/tools/testing/selftests/net/forwarding/Makefile +++ b/tools/testing/selftests/net/forwarding/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT
TEST_PROGS = bridge_igmp.sh \ + bridge_blackhole_fdb.sh \ bridge_locked_port.sh \ bridge_mdb.sh \ bridge_mdb_port_down.sh \ diff --git a/tools/testing/selftests/net/forwarding/bridge_blackhole_fdb.sh b/tools/testing/selftests/net/forwarding/bridge_blackhole_fdb.sh new file mode 100755 index 000000000000..42d9367f7339 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/bridge_blackhole_fdb.sh @@ -0,0 +1,131 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="blackhole_fdb" +NUM_NETIFS=4 +source tc_common.sh +source lib.sh + +h1_create() +{ + simple_if_init $h1 192.0.2.1/24 +} + +h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/24 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.2/24 +} + +h2_destroy() +{ + simple_if_fini $h2 192.0.2.2/24 +} + +switch_create() +{ + ip link add dev br0 type bridge vlan_filtering 1 + + ip link set dev $swp1 master br0 + ip link set dev $swp2 master br0 + + ip link set dev br0 up + ip link set dev $swp1 up + ip link set dev $swp2 up + + tc qdisc add dev $swp2 clsact +} + +switch_destroy() +{ + tc qdisc del dev $swp2 clsact + + ip link set dev $swp2 down + ip link set dev $swp1 down + + ip link del dev br0 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + h2=${NETIFS[p3]} + swp2=${NETIFS[p4]} + + vrf_prepare + + h1_create + h2_create + + switch_create +} + +cleanup() +{ + pre_cleanup + + switch_destroy + + h2_destroy + h1_destroy + + vrf_cleanup +} + +# Check that there is no egress with blackhole entry and that blackhole entries +# can be replaced +blackhole_fdb() +{ + RET=0 + + check_blackhole_fdb_support || return 0 + + tc filter add dev $swp2 egress protocol ip pref 1 handle 1 flower \ + dst_ip 192.0.2.2 ip_proto udp dst_port 12345 action pass + + $MZ $h1 -c 1 -p 128 -t udp "sp=54321,dp=12345" \ + -a own -b `mac_get $h2` -A 192.0.2.1 -B 192.0.2.2 -q + + tc_check_packets "dev $swp2 egress" 1 1 + check_err $? "Packet not seen on egress before adding blackhole entry" + + bridge fdb replace `mac_get $h2` dev br0 vlan 1 blackhole + bridge fdb get `mac_get $h2` br br0 vlan 1 | grep -q blackhole + check_err $? "Blackhole entry not found" + + $MZ $h1 -c 1 -p 128 -t udp "sp=54321,dp=12345" \ + -a own -b `mac_get $h2` -A 192.0.2.1 -B 192.0.2.2 -q + + tc_check_packets "dev $swp2 egress" 1 1 + check_err $? "Packet seen on egress after adding blackhole entry" + + # Check blackhole entries can be replaced. + bridge fdb replace `mac_get $h2` dev $swp2 vlan 1 master static + bridge fdb get `mac_get $h2` br br0 vlan 1 | grep -q blackhole + check_fail $? "Blackhole entry found after replacement" + + $MZ $h1 -c 1 -p 128 -t udp "sp=54321,dp=12345" \ + -a own -b `mac_get $h2` -A 192.0.2.1 -B 192.0.2.2 -q + + tc_check_packets "dev $swp2 egress" 1 2 + check_err $? "Packet not seen on egress after replacing blackhole entry" + + bridge fdb del `mac_get $h2` dev $swp2 vlan 1 master static + tc filter del dev $swp2 egress protocol ip pref 1 handle 1 flower + + log_test "Blackhole FDB entry" +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/bridge_locked_port.sh b/tools/testing/selftests/net/forwarding/bridge_locked_port.sh index 5b02b6b60ce7..f0bc0bcbc246 100755 --- a/tools/testing/selftests/net/forwarding/bridge_locked_port.sh +++ b/tools/testing/selftests/net/forwarding/bridge_locked_port.sh @@ -1,7 +1,15 @@ #!/bin/bash # SPDX-License-Identifier: GPL-2.0
-ALL_TESTS="locked_port_ipv4 locked_port_ipv6 locked_port_vlan" +ALL_TESTS=" + locked_port_ipv4 + locked_port_ipv6 + locked_port_vlan + locked_port_mab + locked_port_station_move + locked_port_mab_station_move +" + NUM_NETIFS=4 CHECK_TC="no" source lib.sh @@ -166,6 +174,95 @@ locked_port_ipv6() log_test "Locked port ipv6" }
+locked_port_mab() +{ + RET=0 + check_port_mab_support || return 0 + + ping_do $h1 192.0.2.2 + check_err $? "MAB: Ping did not work before locking port" + + bridge link set dev $swp1 locked on mab on + + ping_do $h1 192.0.2.2 + check_fail $? "MAB: Ping worked on mab enabled port without FDB entry" + + bridge fdb get `mac_get $h1` br br0 vlan 1 | grep "dev $swp1" | grep -q "locked" + check_err $? "MAB: No locked FDB entry after ping on mab enabled port" + + bridge fdb replace `mac_get $h1` dev $swp1 master static + + ping_do $h1 192.0.2.2 + check_err $? "MAB: Ping did not work with FDB entry without locked flag" + + bridge fdb del `mac_get $h1` dev $swp1 master + bridge link set dev $swp1 locked off mab off + + log_test "Locked port MAB" +} + +# Check that entries cannot roam from an unlocked port to a locked port. +locked_port_station_move() +{ + local mac=a0:b0:c0:c0:b0:a0 + + RET=0 + check_locked_port_support || return 0 + + bridge link set dev $swp1 locked on learning on + + $MZ $h1 -q -c 5 -d 100msec -t udp -a $mac -b rand + bridge fdb get $mac br br0 vlan 1 &> /dev/null + check_fail $? "Locked port station move: FDB entry on first injection" + + $MZ $h2 -q -c 5 -d 100msec -t udp -a $mac -b rand + bridge fdb get $mac br br0 vlan 1 | grep -q "dev $swp2" + check_err $? "Locked port station move: Entry not found on unlocked port" + + $MZ $h1 -q -c 5 -d 100msec -t udp -a $mac -b rand + bridge fdb get $mac br br0 vlan 1 | grep -q "dev $swp1" + check_fail $? "Locked port station move: entry roamed to locked port" + + bridge fdb del $mac vlan 1 dev $swp2 master + bridge link set dev $swp1 locked off learning off + + log_test "Locked port station move" +} + +# Check that entries can roam from a locked port if blackhole FDB flag is not +# set. +locked_port_mab_station_move() +{ + local mac=10:20:30:30:20:10 + + RET=0 + check_port_mab_support || return 0 + + bridge link set dev $swp1 locked on mab on + + $MZ $h1 -q -c 5 -d 100 mesc -t udp -a $mac -b rand + if bridge fdb show dev $swp1 | grep "$mac vlan 1" | grep -q "blackhole"; then + echo "SKIP: Roaming not possible with blackhole flag, skipping test..." + bridge link set dev $swp1 locked off mab off + return $ksft_skip + fi + + bridge fdb get $mac br br0 vlan 1 | grep "dev $swp1" | grep -q "locked" + check_err $? "MAB station move: no locked entry on first injection" + + $MZ $h2 -q -c 5 -d 100msec -t udp -a $mac -b rand + bridge fdb get $mac br br0 vlan 1 | grep -q "dev $swp2" + check_err $? "MAB station move: roamed entry not found" + + bridge fdb get $mac br br0 vlan 1 | grep -q "locked" + check_fail $? "MAB station move: roamed entry to unlocked port had locked flag on" + + bridge fdb del $mac vlan 1 dev $swp2 master + bridge link set dev $swp1 locked off mab off + + log_test "Locked port MAB station move" +} + trap cleanup EXIT
setup_prepare diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh index 3ffb9d6c0950..d6abe873665c 100755 --- a/tools/testing/selftests/net/forwarding/lib.sh +++ b/tools/testing/selftests/net/forwarding/lib.sh @@ -137,6 +137,23 @@ check_locked_port_support() fi }
+check_port_mab_support() +{ + if ! bridge -d link show | grep -q "mab"; then + echo "SKIP: iproute2 too old; MacAuth feature not supported." + return $ksft_skip + fi +} + +check_blackhole_fdb_support() +{ + bridge fdb help 2>&1|grep blackhole &> /dev/null + if [[ $? -ne 0 ]]; then + echo "SKIP: Blackhole fdb feature not supported." + return $ksft_skip + fi +} + if [[ "$(id -u)" -ne 0 ]]; then echo "SKIP: need root privileges" exit $ksft_skip