selftests: forwarding: Make ping timeout configurable

The current timeout (2 seconds) proved to be too low for some (emulated)
systems where we run the tests.

Make the timeout configurable and default to 5 seconds.
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

tools/testing/selftests/drivers/net/mlxsw/qos_dscp_bridge.sh

@@ -150,7 +150,7 @@ dscp_ping_test()
 
 	ip vrf exec $vrf_name \
 	   ${PING} -Q $dscp_10 ${sip:+-I $sip} $dip \
-		   -c 10 -i 0.1 -w 2 &> /dev/null
+		   -c 10 -i 0.1 -w $PING_TIMEOUT &> /dev/null
 
 	local -A t1s
 	eval "t1s=($(dscp_fetch_stats $dev_10 10)

tools/testing/selftests/drivers/net/mlxsw/qos_dscp_router.sh

@@ -171,7 +171,7 @@ dscp_ping_test()
 
 	ip vrf exec $vrf_name \
 	   ${PING} -Q $dscp ${sip:+-I $sip} $dip \
-		   -c 10 -i 0.1 -w 2 &> /dev/null
+		   -c 10 -i 0.1 -w $PING_TIMEOUT &> /dev/null
 
 	eval "local -A dev1_t1s=($(dscp_fetch_stats $dev1 0))"
 	eval "local -A dev2_t1s=($(dscp_fetch_stats $dev2 0))"

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

@@ -33,3 +33,6 @@ PAUSE_ON_CLEANUP=no
 NETIF_TYPE=veth
 # Whether to create virtual interfaces (veth) or not
 NETIF_CREATE=yes
+# Timeout (in seconds) before ping exits regardless of how many packets have
+# been sent or received
+PING_TIMEOUT=5

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

@@ -17,6 +17,7 @@ NETIF_TYPE=${NETIF_TYPE:=veth}
 NETIF_CREATE=${NETIF_CREATE:=yes}
 MCD=${MCD:=smcrouted}
 MC_CLI=${MC_CLI:=smcroutectl}
+PING_TIMEOUT=${PING_TIMEOUT:=5}
 
 relative_path="${BASH_SOURCE%/*}"
 if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then
@@ -820,7 +821,8 @@ ping_do()
 	local vrf_name
 
 	vrf_name=$(master_name_get $if_name)
-	ip vrf exec $vrf_name $PING $args $dip -c 10 -i 0.1 -w 2 &> /dev/null
+	ip vrf exec $vrf_name \
+		$PING $args $dip -c 10 -i 0.1 -w $PING_TIMEOUT &> /dev/null
 }
 
 ping_test()
@@ -840,7 +842,8 @@ ping6_do()
 	local vrf_name
 
 	vrf_name=$(master_name_get $if_name)
-	ip vrf exec $vrf_name $PING6 $args $dip -c 10 -i 0.1 -w 2 &> /dev/null
+	ip vrf exec $vrf_name \
+		$PING6 $args $dip -c 10 -i 0.1 -w $PING_TIMEOUT &> /dev/null
 }
 
 ping6_test()

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

@@ -31,7 +31,8 @@ mirror_test()
 
 	local t0=$(tc_rule_stats_get $dev $pref)
 	ip vrf exec $vrf_name \
-	   ${PING} ${sip:+-I $sip} $dip -c 10 -i 0.1 -w 2 &> /dev/null
+	   ${PING} ${sip:+-I $sip} $dip -c 10 -i 0.1 -w $PING_TIMEOUT \
+	   &> /dev/null
 	local t1=$(tc_rule_stats_get $dev $pref)
 	local delta=$((t1 - t0))
 	# Tolerate a couple stray extra packets.

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

@@ -170,7 +170,8 @@ ping_test_from()
 
 	log_info "ping $dip, expected reply from $from"
 	ip vrf exec $(master_name_get $oif) \
-	$PING -I $oif $dip -c 10 -i 0.1 -w 2 -b 2>&1 | grep $from &> /dev/null
+		$PING -I $oif $dip -c 10 -i 0.1 -w $PING_TIMEOUT -b 2>&1 \
+		| grep $from &> /dev/null
 	check_err_fail $fail $?
 }