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([2601:647:6881:9060:b9d2:1ae4:8a66:82b2]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b3bbe6f1fd0sm8628370a12.53.2025.07.13.14.48.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 13 Jul 2025 14:48:07 -0700 (PDT) From: Cong Wang To: netdev@vger.kernel.org Cc: jhs@mojatatu.com, will@willsroot.io, stephen@networkplumber.org, Cong Wang Subject: [Patch v3 net 2/4] selftests/tc-testing: Add a nested netem duplicate test Date: Sun, 13 Jul 2025 14:47:46 -0700 Message-Id: <20250713214748.1377876-3-xiyou.wangcong@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250713214748.1377876-1-xiyou.wangcong@gmail.com> References: <20250713214748.1377876-1-xiyou.wangcong@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Integrate the reproducer from William into tc-testing and use scapy to generate packets for testing: # ./tdc.py -e 1676 -- ns/SubPlugin.__init__ -- scapy/SubPlugin.__init__ Test 1676: NETEM nested duplicate 100% [ 1154.071135] v0p0id1676: entered promiscuous mode [ 1154.101066] virtio_net virtio0 enp1s0: entered promiscuous mode [ 1154.146301] virtio_net virtio0 enp1s0: left promiscuous mode . Sent 1 packets. [ 1154.173695] v0p0id1676: left promiscuous mode [ 1154.216159] v0p0id1676: entered promiscuous mode . Sent 1 packets. [ 1154.238398] v0p0id1676: left promiscuous mode [ 1154.260909] v0p0id1676: entered promiscuous mode . Sent 1 packets. [ 1154.282708] v0p0id1676: left promiscuous mode [ 1154.309399] v0p0id1676: entered promiscuous mode . Sent 1 packets. [ 1154.337949] v0p0id1676: left promiscuous mode [ 1154.360924] v0p0id1676: entered promiscuous mode . Sent 1 packets. [ 1154.383522] v0p0id1676: left promiscuous mode All test results: 1..1 ok 1 1676 - NETEM nested duplicate 100% Reported-by: William Liu Signed-off-by: Cong Wang --- .../tc-testing/tc-tests/qdiscs/netem.json | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/netem.json b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/netem.json index 3c4444961488..03c4ceb22990 100644 --- a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/netem.json +++ b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/netem.json @@ -336,5 +336,30 @@ "teardown": [ "$TC qdisc del dev $DUMMY handle 1: root" ] + }, + { + "id": "1676", + "name": "NETEM nested duplicate 100%", + "category": ["qdisc", "netem"], + "setup": [ + "$TC qdisc add dev $DEV1 root handle 1: netem limit 1000 duplicate 100%", + "$TC qdisc add dev $DEV1 parent 1: handle 2: netem limit 1000 duplicate 100%" + ], + "teardown": [ + "$TC qdisc del dev $DEV1 root" + ], + "plugins": { + "requires": ["nsPlugin", "scapyPlugin"] + }, + "scapy": { + "iface": "$DEV0", + "count": 5, + "packet": "Ether()/IP(dst='10.10.10.1', src='10.10.10.10')/TCP(sport=12345, dport=80)" + }, + "cmdUnderTest": "$TC -s qdisc show dev $DEV1", + "expExitCode": "0", + "verifyCmd": "$TC -s qdisc show dev $DEV1", + "matchPattern": "Sent [0-9]+ bytes [0-9]+ pkt", + "matchCount": "2" } ] -- 2.34.1