Add the test for additional reference to chains that are explicitly created"Delete the prio 0 filter of chain" looks better. And adding
by RTM_NEWCHAIN message
commit c9a82bec02c3 ("net/sched: cls_api: Fix lockup on flushing explicitly
created chain")
Signed-off-by: Mingshuai Ren <renmingshuai@xxxxxxxxxx>
---
.../tc-testing/tc-tests/infra/filter.json | 25 +++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 tools/testing/selftests/tc-testing/tc-tests/infra/filter.json
diff --git a/tools/testing/selftests/tc-testing/tc-tests/infra/filter.json b/tools/testing/selftests/tc-testing/tc-tests/infra/filter.json
new file mode 100644
index 000000000000..c4c778e83da2
--- /dev/null
+++ b/tools/testing/selftests/tc-testing/tc-tests/infra/filter.json
@@ -0,0 +1,25 @@
+[
+ {
+ "id": "c2b4",
+ "name": "soft lockup alarm will be not generated after delete the prio 0 filter of the chain",
+ "category": [
+ "filter",
+ "chain"
+ ],
+ "setup": [
+ "$IP link add dev $DUMMY type dummy || /bin/true",
+ "$TC qdisc add dev $DUMMY root handle 1: htb default 1",
+ "$TC chain add dev $DUMMY",
+ "$TC filter del dev $DUMMY chain 0 parent 1: prio 0"
+ ],
+ "cmdUnderTest": "$TC filter add dev $DUMMY chain 0 parent 1:",
+ "expExitCode": "2",
+ "verifyCmd": "$TC chain ls dev $DUMMY",
+ "matchPattern": "chain parent 1: chain 0",
+ "matchCount": "1",
+ "teardown": [
+ "$TC qdisc del dev $DUMMY root handle 1: htb default 1",
+ "$IP link del dev $DUMMY type dummy"
+ ]
+ }
+]