selftests/tc-testing: add selftests for skbprio qdisc

Test 283e: Create skbprio with default setting
Test c086: Create skbprio with limit setting
Test 6733: Change skbprio with limit setting
Test 2958: Show skbprio class
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/tc-testing/config

@@ -24,6 +24,7 @@ CONFIG_NET_SCH_PRIO=m
 CONFIG_NET_SCH_INGRESS=m
 CONFIG_NET_SCH_SFB=m
 CONFIG_NET_SCH_SFQ=m
+CONFIG_NET_SCH_SKBPRIO=m
 
 #
 # Classification

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

+[
+    {
+        "id": "283e",
+        "name": "Create skbprio with default setting",
+        "category": [
+            "qdisc",
+            "skbprio"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root skbprio",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc skbprio 1: root refcnt [0-9]+ limit 64",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "c086",
+        "name": "Create skbprio with limit setting",
+        "category": [
+            "qdisc",
+            "skbprio"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root skbprio limit 1",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc skbprio 1: root refcnt [0-9]+ limit 1",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "6733",
+        "name": "Change skbprio with limit setting",
+        "category": [
+            "qdisc",
+            "skbprio"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "$TC qdisc add dev $DUMMY handle 1: root skbprio"
+        ],
+        "cmdUnderTest": "$TC qdisc change dev $DUMMY handle 1: root skbprio limit 32",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc skbprio 1: root refcnt [0-9]+ limit 32",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "2958",
+        "name": "Show skbprio class",
+        "category": [
+            "qdisc",
+            "skbprio"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root skbprio",
+        "expExitCode": "0",
+        "verifyCmd": "$TC class show dev $DUMMY",
+        "matchPattern": "class skbprio 1:",
+        "matchCount": "64",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    }
+]