selftests: Add source route tests to fib_tests

Add tests to verify routes with source address set are deleted when
source address is deleted.

Signed-off-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/net/fib_tests.sh

@@ -9,7 +9,7 @@ ret=0
 ksft_skip=4
 
 # all tests in this script. Can be overridden with -t option
-TESTS="unregister down carrier nexthop suppress ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric ipv6_route_metrics ipv4_route_metrics ipv4_route_v6_gw rp_filter"
+TESTS="unregister down carrier nexthop suppress ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric ipv6_route_metrics ipv4_route_metrics ipv4_route_v6_gw rp_filter ipv4_del_addr"
 
 VERBOSE=0
 PAUSE_ON_FAIL=no
@@ -1500,6 +1500,55 @@ ipv4_route_metrics_test()
 	route_cleanup
 }
 
+ipv4_del_addr_test()
+{
+	echo
+	echo "IPv4 delete address route tests"
+
+	setup
+
+	set -e
+	$IP li add dummy1 type dummy
+	$IP li set dummy1 up
+	$IP li add dummy2 type dummy
+	$IP li set dummy2 up
+	$IP li add red type vrf table 1111
+	$IP li set red up
+	$IP ro add vrf red unreachable default
+	$IP li set dummy2 vrf red
+
+	$IP addr add dev dummy1 172.16.104.1/24
+	$IP addr add dev dummy1 172.16.104.11/24
+	$IP addr add dev dummy2 172.16.104.1/24
+	$IP addr add dev dummy2 172.16.104.11/24
+	$IP route add 172.16.105.0/24 via 172.16.104.2 src 172.16.104.11
+	$IP route add vrf red 172.16.105.0/24 via 172.16.104.2 src 172.16.104.11
+	set +e
+
+	# removing address from device in vrf should only remove route from vrf table
+	$IP addr del dev dummy2 172.16.104.11/24
+	$IP ro ls vrf red | grep -q 172.16.105.0/24
+	log_test $? 1 "Route removed from VRF when source address deleted"
+
+	$IP ro ls | grep -q 172.16.105.0/24
+	log_test $? 0 "Route in default VRF not removed"
+
+	$IP addr add dev dummy2 172.16.104.11/24
+	$IP route add vrf red 172.16.105.0/24 via 172.16.104.2 src 172.16.104.11
+
+	$IP addr del dev dummy1 172.16.104.11/24
+	$IP ro ls | grep -q 172.16.105.0/24
+	log_test $? 1 "Route removed in default VRF when source address deleted"
+
+	$IP ro ls vrf red | grep -q 172.16.105.0/24
+	log_test $? 0 "Route in VRF is not removed by address delete"
+
+	$IP li del dummy1
+	$IP li del dummy2
+	cleanup
+}
+
+
 ipv4_route_v6_gw_test()
 {
 	local rc
@@ -1633,6 +1682,7 @@ do
 	ipv4_route_test|ipv4_rt)	ipv4_route_test;;
 	ipv6_addr_metric)		ipv6_addr_metric_test;;
 	ipv4_addr_metric)		ipv4_addr_metric_test;;
+	ipv4_del_addr)			ipv4_del_addr_test;;
 	ipv6_route_metrics)		ipv6_route_metrics_test;;
 	ipv4_route_metrics)		ipv4_route_metrics_test;;
 	ipv4_route_v6_gw)		ipv4_route_v6_gw_test;;