[PATCH net-next] selftests: rtnetlink: Add operational state test
From: Ido Schimmel <idosch@nvidia.com>
Date: 2025-07-17 12:52:44
Subsystem:
kernel selftest framework, networking [general], the rest · Maintainers:
Shuah Khan, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Virtual devices (e.g., VXLAN) that do not have a notion of a carrier are created with an "UNKNOWN" operational state which some users find confusing [1]. It is possible to set the operational state from user space either during device creation or afterwards and some applications will start doing that in order to avoid the above problem. Add a test for this functionality to ensure it does not regress. [1] https://lore.kernel.org/netdev/20241119153703.71f97b76@hermes.local/ (local) Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> --- tools/testing/selftests/net/rtnetlink.sh | 34 ++++++++++++++++++++++++ 1 file changed, 34 insertions(+)
diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh
index 49141254065c..441b17947230 100755
--- a/tools/testing/selftests/net/rtnetlink.sh
+++ b/tools/testing/selftests/net/rtnetlink.sh@@ -30,6 +30,7 @@ ALL_TESTS=" kci_test_address_proto kci_test_enslave_bonding kci_test_mngtmpaddr + kci_test_operstate " devdummy="test-dummy0"
@@ -1344,6 +1345,39 @@ kci_test_mngtmpaddr() return $ret } +kci_test_operstate() +{ + local ret=0 + + # Check that it is possible to set operational state during device + # creation and that it is preserved when the administrative state of + # the device is toggled. + run_cmd ip link add name vx0 up state up type vxlan id 10010 dstport 4789 + run_cmd_grep "state UP" ip link show dev vx0 + run_cmd ip link set dev vx0 down + run_cmd_grep "state DOWN" ip link show dev vx0 + run_cmd ip link set dev vx0 up + run_cmd_grep "state UP" ip link show dev vx0 + + run_cmd ip link del dev vx0 + + # Check that it is possible to set the operational state of the device + # after creation. + run_cmd ip link add name vx0 up type vxlan id 10010 dstport 4789 + run_cmd_grep "state UNKNOWN" ip link show dev vx0 + run_cmd ip link set dev vx0 state up + run_cmd_grep "state UP" ip link show dev vx0 + + run_cmd ip link del dev vx0 + + if [ "$ret" -ne 0 ]; then + end_test "FAIL: operstate" + return 1 + fi + + end_test "PASS: operstate" +} + kci_test_rtnl() { local current_test
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2.50.0