netdev - [PATCH net 2/2] selftests: tc-testing: add tests for qfq mtu sanity check

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Date: Mon,  3 Jul 2023 12:10:38 -0300
From: Pedro Tammela <pctammela@...atatu.com>
To: netdev@...r.kernel.org
Cc: jhs@...atatu.com,
	xiyou.wangcong@...il.com,
	jiri@...nulli.us,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	shuah@...nel.org,
	shaozhengchao@...wei.com,
	victor@...atatu.com,
	simon.horman@...igine.com,
	Pedro Tammela <pctammela@...atatu.com>
Subject: [PATCH net 2/2] selftests: tc-testing: add tests for qfq mtu sanity check

QFQ only supports a certain bound of MTU size so make sure
we check for this requirement in the tests.

Signed-off-by: Pedro Tammela <pctammela@...atatu.com>
---
 .../tc-testing/tc-tests/qdiscs/qfq.json       | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/qfq.json b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/qfq.json
index 147899a868d3..965da7622dac 100644
--- a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/qfq.json
+++ b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/qfq.json
@@ -213,5 +213,53 @@
             "$TC qdisc del dev $DUMMY handle 1: root",
             "$IP link del dev $DUMMY type dummy"
         ]
+    },
+    {
+        "id": "85ee",
+        "name": "QFQ with big MTU",
+        "category": [
+            "qdisc",
+            "qfq"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "$IP link set dev $DUMMY mtu 2147483647 || /bin/true",
+            "$TC qdisc add dev $DUMMY handle 1: root qfq"
+        ],
+        "cmdUnderTest": "$TC class add dev $DUMMY parent 1: classid 1:1 qfq weight 100",
+        "expExitCode": "2",
+        "verifyCmd": "$TC class show dev $DUMMY",
+        "matchPattern": "class qfq 1:",
+        "matchCount": "0",
+        "teardown": [
+            "$IP link del dev $DUMMY type dummy"
+        ]
+    },
+    {
+        "id": "ddfa",
+        "name": "QFQ with small MTU",
+        "category": [
+            "qdisc",
+            "qfq"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "$IP link add dev $DUMMY type dummy || /bin/true",
+            "$IP link set dev $DUMMY mtu 256 || /bin/true",
+            "$TC qdisc add dev $DUMMY handle 1: root qfq"
+        ],
+        "cmdUnderTest": "$TC class add dev $DUMMY parent 1: classid 1:1 qfq weight 100",
+        "expExitCode": "2",
+        "verifyCmd": "$TC class show dev $DUMMY",
+        "matchPattern": "class qfq 1:",
+        "matchCount": "0",
+        "teardown": [
+            "$IP link del dev $DUMMY type dummy"
+        ]
     }
 ]
-- 
2.39.2