selftests/tc-testing: add selftests for plug qdisc

Test 3289: Create PLUG with default setting
Test 0917: Create PLUG with block setting
Test 483b: Create PLUG with release setting
Test 4995: Create PLUG with release_indefinite setting
Test 389c: Create PLUG with limit setting
Test 384a: Delete PLUG with valid handle
Test 439a: Replace PLUG with limit setting
Test 9831: Change PLUG with limit setting
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/tc-testing/config

@@ -19,6 +19,7 @@ CONFIG_NET_SCH_ETF=m
 CONFIG_NET_SCH_FQ=m
 CONFIG_NET_SCH_GRED=m
 CONFIG_NET_SCH_HHF=m
+CONFIG_NET_SCH_PLUG=m
 CONFIG_NET_SCH_PRIO=m
 CONFIG_NET_SCH_INGRESS=m
 

tools/testing/selftests/tc-testing/tc-tests/qdiscs/plug.json

+[
+    {
+        "id": "3289",
+        "name": "Create PLUG with default setting",
+        "category": [
+            "qdisc",
+            "plug"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root plug",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc plug 1: root refcnt",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "0917",
+        "name": "Create PLUG with block setting",
+        "category": [
+            "qdisc",
+            "plug"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root plug block",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc plug 1: root refcnt",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "483b",
+        "name": "Create PLUG with release setting",
+        "category": [
+            "qdisc",
+            "plug"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root plug release",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc plug 1: root refcnt",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "4995",
+        "name": "Create PLUG with release_indefinite setting",
+        "category": [
+            "qdisc",
+            "plug"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root plug release_indefinite",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc plug 1: root refcnt",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "389c",
+        "name": "Create PLUG with limit setting",
+        "category": [
+            "qdisc",
+            "plug"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root plug limit 100",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc plug 1: root refcnt",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "384a",
+        "name": "Delete PLUG with valid handle",
+        "category": [
+            "qdisc",
+            "plug"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "$TC qdisc add dev $DUMMY handle 1: root plug"
+        ],
+        "cmdUnderTest": "$TC qdisc del dev $DUMMY handle 1: root",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc plug 1: root refcnt",
+        "matchCount": "0",
+        "teardown": [
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "439a",
+        "name": "Replace PLUG with limit setting",
+        "category": [
+            "qdisc",
+            "plug"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "$TC qdisc add dev $DUMMY handle 1: root plug"
+        ],
+        "cmdUnderTest": "$TC qdisc replace dev $DUMMY handle 1: root plug limit 1000",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc plug 1: root refcnt",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "9831",
+        "name": "Change PLUG with limit setting",
+        "category": [
+            "qdisc",
+            "plug"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "$TC qdisc add dev $DUMMY handle 1: root plug"
+        ],
+        "cmdUnderTest": "$TC qdisc change dev $DUMMY handle 1: root plug limit 1000",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc plug 1: root refcnt",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    }
+]