selftests/tc-testing: add selftests for codel qdisc

Test 983a: Create CODEL with default setting
Test 38aa: Create CODEL with limit packet setting
Test 9178: Create CODEL with target setting
Test 78d1: Create CODEL with interval setting
Test 238a: Create CODEL with ecn setting
Test 939c: Create CODEL with ce_threshold setting
Test 8380: Delete CODEL with valid handle
Test 289c: Replace CODEL with limit setting
Test 0648: Change CODEL 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

@@ -14,6 +14,7 @@ CONFIG_NET_SCHED=y
 #
 CONFIG_NET_SCH_ATM=m
 CONFIG_NET_SCH_CHOKE=m
+CONFIG_NET_SCH_CODEL=m
 CONFIG_NET_SCH_PRIO=m
 CONFIG_NET_SCH_INGRESS=m
 

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

+[
+    {
+        "id": "983a",
+        "name": "Create CODEL with default setting",
+        "category": [
+            "qdisc",
+            "codel"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root codel",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc codel 1: root refcnt [0-9]+ limit 1000p target 5ms interval 100ms",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "38aa",
+        "name": "Create CODEL with limit packet setting",
+        "category": [
+            "qdisc",
+            "codel"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root codel limit 1500",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc codel 1: root refcnt [0-9]+ limit 1500p target 5ms interval 100ms",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "9178",
+        "name": "Create CODEL with target setting",
+        "category": [
+            "qdisc",
+            "codel"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root codel target 100ms",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc codel 1: root refcnt [0-9]+ limit 1000p target 100ms interval 100ms",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "78d1",
+        "name": "Create CODEL with interval setting",
+        "category": [
+            "qdisc",
+            "codel"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root codel interval 20ms",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc codel 1: root refcnt [0-9]+ limit 1000p target 5ms interval 20ms",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "238a",
+        "name": "Create CODEL with ecn setting",
+        "category": [
+            "qdisc",
+            "codel"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root codel ecn",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc codel 1: root refcnt [0-9]+ limit 1000p target 5ms interval 100ms ecn",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "939c",
+        "name": "Create CODEL with ce_threshold setting",
+        "category": [
+            "qdisc",
+            "codel"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root codel ce_threshold 20ms",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc codel 1: root refcnt [0-9]+ limit 1000p target 5ms ce_threshold 20ms interval 100ms",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "8380",
+        "name": "Delete CODEL with valid handle",
+        "category": [
+            "qdisc",
+            "codel"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "$TC qdisc add dev $DUMMY handle 1: root codel"
+        ],
+        "cmdUnderTest": "$TC qdisc del dev $DUMMY handle 1: root",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc codel 1: root refcnt [0-9]+ limit 1000p target 5ms interval 100ms",
+        "matchCount": "0",
+        "teardown": [
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "289c",
+        "name": "Replace CODEL with limit setting",
+        "category": [
+            "qdisc",
+            "codel"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "$TC qdisc add dev $DUMMY handle 1: root codel"
+        ],
+        "cmdUnderTest": "$TC qdisc replace dev $DUMMY handle 1: root codel limit 5000",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc codel 1: root refcnt [0-9]+ limit 5000p target 5ms interval 100ms",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "0648",
+        "name": "Change CODEL with limit setting",
+        "category": [
+            "qdisc",
+            "codel"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "$TC qdisc add dev $DUMMY handle 1: root codel"
+        ],
+        "cmdUnderTest": "$TC qdisc change dev $DUMMY handle 1: root codel limit 100",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc codel 1: root refcnt [0-9]+ limit 100p target 5ms interval 100ms",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    }
+]