From: Ido Schimmel Date: Sun, 11 Jan 2026 12:08:11 +0000 (+0200) Subject: selftests: fib-onlink: Add a test case for IPv4 multicast gateway X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9bf8345fb38ab9bd771bd430073cbd3e912fcf75;p=thirdparty%2Fkernel%2Flinux.git selftests: fib-onlink: Add a test case for IPv4 multicast gateway A multicast gateway address should be rejected when "onlink" is specified, but it is only tested as part of the IPv6 tests. Add an equivalent IPv4 test. # ./fib-onlink-tests.sh -v [...] COMMAND: ip ro add table 254 169.254.101.12/32 via 233.252.0.1 dev veth1 onlink Error: Nexthop has invalid gateway. TEST: Invalid gw - multicast address [ OK ] [...] COMMAND: ip ro add table 1101 169.254.102.12/32 via 233.252.0.1 dev veth5 onlink Error: Nexthop has invalid gateway. TEST: Invalid gw - multicast address, VRF [ OK ] [...] Tests passed: 37 Tests failed: 0 Reviewed-by: Petr Machata Signed-off-by: Ido Schimmel Reviewed-by: David Ahern Link: https://patch.msgid.link/20260111120813.159799-4-idosch@nvidia.com Signed-off-by: Jakub Kicinski --- diff --git a/tools/testing/selftests/net/fib-onlink-tests.sh b/tools/testing/selftests/net/fib-onlink-tests.sh index 63477be859e3e..7a0fd7a91e4eb 100755 --- a/tools/testing/selftests/net/fib-onlink-tests.sh +++ b/tools/testing/selftests/net/fib-onlink-tests.sh @@ -72,7 +72,8 @@ declare -A TEST_NET4IN6IN6 TEST_NET4IN6[1]=10.1.1.254 TEST_NET4IN6[2]=10.2.1.254 -# mcast address +# mcast addresses +MCAST4=233.252.0.1 MCAST6=ff02::1 VRF=lisa @@ -310,9 +311,13 @@ invalid_onlink_ipv4() { run_ip 254 ${TEST_NET4[1]}.11 ${V4ADDRS[p1]} ${NETIFS[p1]} 2 \ "Invalid gw - local unicast address" + run_ip 254 ${TEST_NET4[1]}.12 ${MCAST4} ${NETIFS[p1]} 2 \ + "Invalid gw - multicast address" run_ip ${VRF_TABLE} ${TEST_NET4[2]}.11 ${V4ADDRS[p5]} ${NETIFS[p5]} 2 \ "Invalid gw - local unicast address, VRF" + run_ip ${VRF_TABLE} ${TEST_NET4[2]}.12 ${MCAST4} ${NETIFS[p5]} 2 \ + "Invalid gw - multicast address, VRF" run_ip 254 ${TEST_NET4[1]}.101 ${V4ADDRS[p1]} "" 2 "No nexthop device given" }