[PATCH net-next 5/5] selftests: fib-onlink: Add test cases for nexthop device mismatch
From: Ido Schimmel <idosch@nvidia.com>
Date: 2026-01-11 12:09:36
Subsystem:
kernel selftest framework, networking [general], networking [ipv4/ipv6], the rest · Maintainers:
Shuah Khan, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
Add test cases that verify that when the "onlink" keyword is specified, both address families (with and without VRF) accept routes with a gateway address that is reachable via a different interface than the one specified. Output without "ipv6: Allow for nexthop device mismatch with "onlink"": # ./fib-onlink-tests.sh | grep mismatch TEST: nexthop device mismatch [ OK ] TEST: nexthop device mismatch [ OK ] TEST: nexthop device mismatch [FAIL] TEST: nexthop device mismatch [FAIL] Output with "ipv6: Allow for nexthop device mismatch with "onlink"": # ./fib-onlink-tests.sh | grep mismatch TEST: nexthop device mismatch [ OK ] TEST: nexthop device mismatch [ OK ] TEST: nexthop device mismatch [ OK ] TEST: nexthop device mismatch [ OK ] That is, the IPv4 tests were always passing, but the IPv6 ones only pass after the specified patch. Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> --- tools/testing/selftests/net/fib-onlink-tests.sh | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/tools/testing/selftests/net/fib-onlink-tests.sh b/tools/testing/selftests/net/fib-onlink-tests.sh
index 7a0fd7a91e4e..b5773ac8847d 100755
--- a/tools/testing/selftests/net/fib-onlink-tests.sh
+++ b/tools/testing/selftests/net/fib-onlink-tests.sh@@ -271,11 +271,15 @@ valid_onlink_ipv4() run_ip 254 ${TEST_NET4[1]}.1 ${CONGW[1]} ${NETIFS[p1]} 0 "unicast connected" run_ip 254 ${TEST_NET4[1]}.2 ${RECGW4[1]} ${NETIFS[p1]} 0 "unicast recursive" + run_ip 254 ${TEST_NET4[1]}.9 ${CONGW[1]} ${NETIFS[p3]} 0 \ + "nexthop device mismatch" log_subsection "VRF ${VRF}" run_ip ${VRF_TABLE} ${TEST_NET4[2]}.1 ${CONGW[3]} ${NETIFS[p5]} 0 "unicast connected" run_ip ${VRF_TABLE} ${TEST_NET4[2]}.2 ${RECGW4[2]} ${NETIFS[p5]} 0 "unicast recursive" + run_ip ${VRF_TABLE} ${TEST_NET4[2]}.10 ${CONGW[3]} ${NETIFS[p7]} 0 \ + "nexthop device mismatch" log_subsection "VRF device, PBR table"
@@ -366,12 +370,16 @@ valid_onlink_ipv6() run_ip6 254 ${TEST_NET6[1]}::1 ${V6ADDRS[p1]/::*}::64 ${NETIFS[p1]} 0 "unicast connected" run_ip6 254 ${TEST_NET6[1]}::2 ${RECGW6[1]} ${NETIFS[p1]} 0 "unicast recursive" run_ip6 254 ${TEST_NET6[1]}::3 ::ffff:${TEST_NET4IN6[1]} ${NETIFS[p1]} 0 "v4-mapped" + run_ip6 254 ${TEST_NET6[1]}::a ${V6ADDRS[p1]/::*}::64 ${NETIFS[p3]} 0 \ + "nexthop device mismatch" log_subsection "VRF ${VRF}" run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::1 ${V6ADDRS[p5]/::*}::64 ${NETIFS[p5]} 0 "unicast connected" run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::2 ${RECGW6[2]} ${NETIFS[p5]} 0 "unicast recursive" run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::3 ::ffff:${TEST_NET4IN6[2]} ${NETIFS[p5]} 0 "v4-mapped" + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::b ${V6ADDRS[p5]/::*}::64 \ + ${NETIFS[p7]} 0 "nexthop device mismatch" log_subsection "VRF device, PBR table"
--
2.52.0