selftests: fib_tests: add more tests for metric update

This patch adds two more tests to ipv4_addr_metric_test() to
explicitly cover the scenarios fixed by the previous patch.

Suggested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 21 insertions, 0 deletions

diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh
index c4ba0ff4a53f..76c1897e6352 100755
--- a/tools/testing/selftests/net/fib_tests.sh
+++ b/tools/testing/selftests/net/fib_tests.sh
@@ -1438,6 +1438,27 @@ ipv4_addr_metric_test()
         fi
         log_test $rc 0 "Prefix route with metric on link up"
 
+        # explicitly check for metric changes on edge scenarios
+        run_cmd "$IP addr flush dev dummy2"
+        run_cmd "$IP addr add dev dummy2 172.16.104.0/24 metric 259"
+        run_cmd "$IP addr change dev dummy2 172.16.104.0/24 metric 260"
+        rc=$?
+        if [ $rc -eq 0 ]; then
+                check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.0 metric 260"
+                rc=$?
+        fi
+        log_test $rc 0 "Modify metric of .0/24 address"
+
+        run_cmd "$IP addr flush dev dummy2"
+        run_cmd "$IP addr add dev dummy2 172.16.104.1/32 peer 172.16.104.2 metric 260"
+        run_cmd "$IP addr change dev dummy2 172.16.104.1/32 peer 172.16.104.2 metric 261"
+        rc=$?
+        if [ $rc -eq 0 ]; then
+                check_route "172.16.104.2 dev dummy2 proto kernel scope link src 172.16.104.1 metric 261"
+                rc=$?
+        fi
+        log_test $rc 0 "Modify metric of address with peer route"
+
         $IP li del dummy1
         $IP li del dummy2
         cleanup