selftests/tc-testing: add selftests for teql qdisc

Test 84a0: Create TEQL with default setting
Test 7734: Create TEQL with multiple device
Test 34a9: Delete TEQL with valid handle
Test 6289: Show TEQL stats
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/tc-testing/config

@@ -27,6 +27,7 @@ CONFIG_NET_SCH_SFQ=m
 CONFIG_NET_SCH_SKBPRIO=m
 CONFIG_NET_SCH_TAPRIO=m
 CONFIG_NET_SCH_TBF=m
+CONFIG_NET_SCH_TEQL=m
 
 #
 # Classification

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

+[
+    {
+        "id": "84a0",
+        "name": "Create TEQL with default setting",
+        "category": [
+            "qdisc",
+            "teql"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root teql0",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc teql0 1: root refcnt",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "7734",
+        "name": "Create TEQL with multiple device",
+        "category": [
+            "qdisc",
+            "teql"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "echo \"1 1 4\" > /sys/bus/netdevsim/new_device",
+            "$TC qdisc add dev $ETH root handle 1: teql0"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root teql0",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc teql0 1: root refcnt",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "echo \"1\" > /sys/bus/netdevsim/del_device",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "34a9",
+        "name": "Delete TEQL with valid handle",
+        "category": [
+            "qdisc",
+            "teql"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "$TC qdisc add dev $DUMMY handle 1: root teql0"
+        ],
+        "cmdUnderTest": "$TC qdisc del dev $DUMMY handle 1: root",
+        "expExitCode": "0",
+        "verifyCmd": "$TC qdisc show dev $DUMMY",
+        "matchPattern": "qdisc teql0 1: root refcnt",
+        "matchCount": "0",
+        "teardown": [
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "6289",
+        "name": "Show TEQL stats",
+        "category": [
+            "qdisc",
+            "teql"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root teql0",
+        "expExitCode": "0",
+        "verifyCmd": "$TC -s qdisc show dev $DUMMY",
+        "matchPattern": "qdisc teql0 1: root refcnt",
+        "matchCount": "1",
+        "teardown": [
+            "$TC qdisc del dev $DUMMY handle 1: root",
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    }
+]