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selftests: forwarding: Add a test for flooded traffic

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Add test cases for unknown unicast and unregistered multicast flooding.

For each traffic type, turn off flooding on one bridged port and inject
a packet of the specified type through the second bridged port. Make
sure the packet was not received by checking the ACL counters on the
other end. Later, turn on flooding and make sure the packet was
received.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2018-02-28 12:25:08 +02:00 committed by David S. Miller
parent d4deb01467
commit 236dd50bf6
2 changed files with 90 additions and 0 deletions
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1
tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh
View File

@ -82,5 +82,6 @@ setup_wait
ping_test $h1 192.0.2.2
ping6_test $h1 2001:db8:1::2
learning_test "br0" $swp1 $h1 $h2
flood_test $swp2 $h1 $h2
exit $EXIT_STATUS

89
tools/testing/selftests/net/forwarding/lib.sh
View File

@ -372,3 +372,92 @@ learning_test()
log_test "FDB learning"
}
flood_test_do()
{
local should_flood=$1
local mac=$2
local ip=$3
local host1_if=$4
local host2_if=$5
local err=0
# Add an ACL on `host2_if` which will tell us whether the packet
# was flooded to it or not.
tc qdisc add dev $host2_if ingress
tc filter add dev $host2_if ingress protocol ip pref 1 handle 101 \
flower dst_mac $mac action drop
$MZ $host1_if -c 1 -p 64 -b $mac -B $ip -t ip -q
sleep 1
tc -j -s filter show dev $host2_if ingress \
| jq -e ".[] | select(.options.handle == 101) \
| select(.options.actions[0].stats.packets == 1)" &> /dev/null
if [[ $? -ne 0 && $should_flood == "true" || \
$? -eq 0 && $should_flood == "false" ]]; then
err=1
fi
tc filter del dev $host2_if ingress protocol ip pref 1 handle 101 flower
tc qdisc del dev $host2_if ingress
return $err
}
flood_unicast_test()
{
local br_port=$1
local host1_if=$2
local host2_if=$3
local mac=de:ad:be:ef:13:37
local ip=192.0.2.100
RET=0
bridge link set dev $br_port flood off
flood_test_do false $mac $ip $host1_if $host2_if
check_err $? "Packet flooded when should not"
bridge link set dev $br_port flood on
flood_test_do true $mac $ip $host1_if $host2_if
check_err $? "Packet was not flooded when should"
log_test "Unknown unicast flood"
}
flood_multicast_test()
{
local br_port=$1
local host1_if=$2
local host2_if=$3
local mac=01:00:5e:00:00:01
local ip=239.0.0.1
RET=0
bridge link set dev $br_port mcast_flood off
flood_test_do false $mac $ip $host1_if $host2_if
check_err $? "Packet flooded when should not"
bridge link set dev $br_port mcast_flood on
flood_test_do true $mac $ip $host1_if $host2_if
check_err $? "Packet was not flooded when should"
log_test "Unregistered multicast flood"
}
flood_test()
{
# `br_port` is connected to `host2_if`
local br_port=$1
local host1_if=$2
local host2_if=$3
flood_unicast_test $br_port $host1_if $host2_if
flood_multicast_test $br_port $host1_if $host2_if
}