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Commit 236dd50b authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

selftests: forwarding: Add a test for flooded traffic 



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: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d4deb014

tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh

+1 −0
Original line number Diff line number Diff line
@@ -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

tools/testing/selftests/net/forwarding/lib.sh

+89 −0
Original line number Diff line number Diff line
@@ -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

}