1 files changed, 81 insertions, 0 deletions
diff --git a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/netem.json b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/netem.json
index 3c4444961488..718d2df2aafa 100644
--- a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/netem.json
+++ b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/netem.json
@@ -336,5 +336,86 @@
         "teardown": [
             "$TC qdisc del dev $DUMMY handle 1: root"
         ]
+    },
+    {
+        "id": "d34d",
+        "name": "NETEM test qdisc duplication restriction in qdisc tree in netem_change root",
+        "category": ["qdisc", "netem"],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$TC qdisc add dev $DUMMY root handle 1: netem limit 1",
+            "$TC qdisc add dev $DUMMY parent 1: handle 2: netem limit 1"
+        ],
+        "cmdUnderTest": "$TC qdisc change dev $DUMMY handle 1: netem duplicate 50%",
+        "expExitCode": "2",
+        "verifyCmd": "$TC -s qdisc show dev $DUMMY",
+        "matchPattern": "qdisc netem",
+        "matchCount": "2",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1:0 root"
+        ]
+    },
+    {
+        "id": "b33f",
+        "name": "NETEM test qdisc duplication restriction in qdisc tree in netem_change non-root",
+        "category": ["qdisc", "netem"],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$TC qdisc add dev $DUMMY root handle 1: netem limit 1",
+            "$TC qdisc add dev $DUMMY parent 1: handle 2: netem limit 1"
+        ],
+        "cmdUnderTest": "$TC qdisc change dev $DUMMY handle 2: netem duplicate 50%",
+        "expExitCode": "2",
+        "verifyCmd": "$TC -s qdisc show dev $DUMMY",
+        "matchPattern": "qdisc netem",
+        "matchCount": "2",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1:0 root"
+        ]
+    },
+    {
+        "id": "cafe",
+        "name": "NETEM test qdisc duplication restriction in qdisc tree",
+        "category": ["qdisc", "netem"],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$TC qdisc add dev $DUMMY root handle 1: netem limit 1 duplicate 100%"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY parent 1: handle 2: netem duplicate 100%",
+        "expExitCode": "2",
+        "verifyCmd": "$TC -s qdisc show dev $DUMMY",
+        "matchPattern": "qdisc netem",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1:0 root"
+        ]
+    },
+    {
+        "id": "1337",
+        "name": "NETEM test qdisc duplication restriction in qdisc tree across branches",
+        "category": ["qdisc", "netem"],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$TC qdisc add dev $DUMMY parent root handle 1:0 hfsc",
+            "$TC class add dev $DUMMY parent 1:0 classid 1:1 hfsc rt m2 10Mbit",
+            "$TC qdisc add dev $DUMMY parent 1:1 handle 2:0 netem",
+            "$TC class add dev $DUMMY parent 1:0 classid 1:2 hfsc rt m2 10Mbit"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY parent 1:2 handle 3:0 netem duplicate 100%",
+        "expExitCode": "2",
+        "verifyCmd": "$TC -s qdisc show dev $DUMMY",
+        "matchPattern": "qdisc netem",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1:0 root"
+        ]
     }
 ]