selftests: net: bridge: Parameterize ageing timeout

Allow the ageing timeout that is set on bridges to be customized from
forwarding.config. This allows the tests to be run on hardware which
does not support a 10s timeout (e.g. mv88e6xxx).

Signed-off-by: Tobias Waldekranz <[e-mail]>
Reviewed-by: Petr Machata <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

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

···
 
 switch_create()
 {
-	# 10 Seconds ageing time.
-	ip link add dev br0 type bridge vlan_filtering 1 ageing_time 1000 \
+	ip link add dev br0 type bridge \
+		vlan_filtering 1 \
+		ageing_time $LOW_AGEING_TIME \
 		mcast_snooping 0
 
 	ip link set dev $swp1 master br0

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

···
 
 switch_create()
 {
-	# 10 Seconds ageing time.
-	ip link add dev br0 type bridge ageing_time 1000 mcast_snooping 0
+	ip link add dev br0 type bridge \
+		ageing_time $LOW_AGEING_TIME \
+		mcast_snooping 0
 
 	ip link set dev $swp1 master br0
 	ip link set dev $swp2 master br0

tools/testing/selftests/net/forwarding/forwarding.config.sample

···
 # Timeout (in seconds) before ping exits regardless of how many packets have
 # been sent or received
 PING_TIMEOUT=5
+# Minimum ageing_time (in centiseconds) supported by hardware
+LOW_AGEING_TIME=1000
 # Flag for tc match, supposed to be skip_sw/skip_hw which means do not process
 # filter by software/hardware
 TC_FLAG=skip_hw

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

···
 PING_TIMEOUT=${PING_TIMEOUT:=5}
 WAIT_TIMEOUT=${WAIT_TIMEOUT:=20}
 INTERFACE_TIMEOUT=${INTERFACE_TIMEOUT:=600}
+LOW_AGEING_TIME=${LOW_AGEING_TIME:=1000}
 REQUIRE_JQ=${REQUIRE_JQ:=yes}
 REQUIRE_MZ=${REQUIRE_MZ:=yes}