mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-12-27 12:21:22 -05:00
Code Issues Packages Projects Releases Wiki Activity

selftests/tc-testing: Add a test case for FQ_CODEL with QFQ parent

Browse Source 
Add a test case for FQ_CODEL with QFQ parent to verify packet drop
behavior when the queue becomes empty. This helps ensure proper
notification mechanisms between qdiscs.

Note this is best-effort, it is hard to play with those parameters
perfectly to always trigger ->qlen_notify().

Cc: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250403211636.166257-3-xiyou.wangcong@gmail.com
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Cong Wang
2025-04-03 14:16:33 -07:00
committed by Paolo Abeni
parent cbe9588b12
commit 4cb1837ac5
1 changed files with 31 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json
View File

@@ -189,5 +189,36 @@
"$TC qdisc del dev $DUMMY handle 1: root",
"$IP addr del 10.10.10.10/24 dev $DUMMY || true"
]
},
{
"id": "a4be",
"name": "Test FQ_CODEL with QFQ parent - force packet drop with empty queue",
"category": [
"qdisc",
"fq_codel",
"qfq"
],
"plugins": {
"requires": "nsPlugin"
},
"setup": [
"$IP link set dev $DUMMY up || true",
"$IP addr add 10.10.10.10/24 dev $DUMMY || true",
"$TC qdisc add dev $DUMMY handle 1: root qfq",
"$TC class add dev $DUMMY parent 1: classid 1:10 qfq weight 1 maxpkt 1000",
"$TC qdisc add dev $DUMMY parent 1:10 handle 10: fq_codel memory_limit 1 flows 1 target 0.1ms interval 1ms",
"$TC filter add dev $DUMMY parent 1: protocol ip prio 1 u32 match ip protocol 1 0xff flowid 1:10",
"ping -c 10 -s 1000 -f -I $DUMMY 10.10.10.1 > /dev/null || true",
"sleep 0.1"
],
"cmdUnderTest": "$TC -s qdisc show dev $DUMMY",
"expExitCode": "0",
"verifyCmd": "$TC -s qdisc show dev $DUMMY | grep -A 5 'qdisc fq_codel'",
"matchPattern": "dropped [1-9][0-9]*",
"matchCount": "1",
"teardown": [
"$TC qdisc del dev $DUMMY handle 1: root",
"$IP addr del 10.10.10.10/24 dev $DUMMY || true"
]
}
]