[PATCH net-next] selftests: fix flower parent qdisc

[PATCH net-next] selftests: fix flower parent qdisc

[Vlad Buslov]

Flower tests used to create ingress filter with specified parent qdisc
"parent ffff:" but dump them on "ingress". With recent commit that fixed
tcm_parent handling in dump those are not considered same parent anymore,
which causes iproute2 tc to emit additional "parent ffff:" in first line of
filter dump output. The change in output causes filter match in tests to
fail.

Prevent parent qdisc output when dumping filters in flower tests by always
correctly specifying "ingress" parent both when creating and dumping
filters.

Fixes: a7df4870d79b ("net_sched: fix tcm_parent in tc filter dump")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
---
 .../selftests/tc-testing/tc-tests/filters/tests.json        | 6 +++---
 tools/testing/selftests/tc-testing/tdc_batch.py             | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/tc-testing/tc-tests/filters/tests.json b/tools/testing/selftests/tc-testing/tc-tests/filters/tests.json
index 8877f7b2b809..12aa4bc1f6a0 100644
--- a/tools/testing/selftests/tc-testing/tc-tests/filters/tests.json
+++ b/tools/testing/selftests/tc-testing/tc-tests/filters/tests.json
@@ -32,7 +32,7 @@
         "setup": [
             "$TC qdisc add dev $DEV2 ingress"
         ],
-        "cmdUnderTest": "$TC filter add dev $DEV2 protocol ip pref 1 parent ffff: handle 0xffffffff flower action ok",
+        "cmdUnderTest": "$TC filter add dev $DEV2 protocol ip pref 1 ingress handle 0xffffffff flower action ok",
         "expExitCode": "0",
         "verifyCmd": "$TC filter show dev $DEV2 ingress",
         "matchPattern": "filter protocol ip pref 1 flower.*handle 0xffffffff",
@@ -77,9 +77,9 @@
         },
         "setup": [
             "$TC qdisc add dev $DEV2 ingress",
-            "$TC filter add dev $DEV2 protocol ip prio 1 parent ffff: flower dst_mac e4:11:22:11:4a:51 src_mac e4:11:22:11:4a:50 ip_proto tcp src_ip 1.1.1.1 dst_ip 2.2.2.2 action drop"
+            "$TC filter add dev $DEV2 protocol ip prio 1 ingress flower dst_mac e4:11:22:11:4a:51 src_mac e4:11:22:11:4a:50 ip_proto tcp src_ip 1.1.1.1 dst_ip 2.2.2.2 action drop"
         ],
-        "cmdUnderTest": "$TC filter add dev $DEV2 protocol ip prio 1 parent ffff: flower dst_mac e4:11:22:11:4a:51 src_mac e4:11:22:11:4a:50 ip_proto tcp src_ip 1.1.1.1 dst_ip 2.2.2.2 action drop",
+        "cmdUnderTest": "$TC filter add dev $DEV2 protocol ip prio 1 ingress flower dst_mac e4:11:22:11:4a:51 src_mac e4:11:22:11:4a:50 ip_proto tcp src_ip 1.1.1.1 dst_ip 2.2.2.2 action drop",
         "expExitCode": "2",
         "verifyCmd": "$TC -s filter show dev $DEV2 ingress",
         "matchPattern": "filter protocol ip pref 1 flower chain 0 handle",
diff --git a/tools/testing/selftests/tc-testing/tdc_batch.py b/tools/testing/selftests/tc-testing/tdc_batch.py
index 6a2bd2cf528e..995f66ce43eb 100755
--- a/tools/testing/selftests/tc-testing/tdc_batch.py
+++ b/tools/testing/selftests/tc-testing/tdc_batch.py
@@ -72,21 +72,21 @@ mac_prefix = args.mac_prefix
 
 def format_add_filter(device, prio, handle, skip, src_mac, dst_mac,
                       share_action):
-    return ("filter add dev {} {} protocol ip parent ffff: handle {} "
+    return ("filter add dev {} {} protocol ip ingress handle {} "
             " flower {} src_mac {} dst_mac {} action drop {}".format(
                 device, prio, handle, skip, src_mac, dst_mac, share_action))
 
 
 def format_rep_filter(device, prio, handle, skip, src_mac, dst_mac,
                       share_action):
-    return ("filter replace dev {} {} protocol ip parent ffff: handle {} "
+    return ("filter replace dev {} {} protocol ip ingress handle {} "
             " flower {} src_mac {} dst_mac {} action drop {}".format(
                 device, prio, handle, skip, src_mac, dst_mac, share_action))
 
 
 def format_del_filter(device, prio, handle, skip, src_mac, dst_mac,
                       share_action):
-    return ("filter del dev {} {} protocol ip parent ffff: handle {} "
+    return ("filter del dev {} {} protocol ip ingress handle {} "
             "flower".format(device, prio, handle))
 
 
-- 
2.21.0

Re: [PATCH net-next] selftests: fix flower parent qdisc

[Cong Wang]

On Wed, May 13, 2020 at 10:58 AM Vlad Buslov <vladbu@mellanox.com> wrote:
>
> Flower tests used to create ingress filter with specified parent qdisc
> "parent ffff:" but dump them on "ingress". With recent commit that fixed
> tcm_parent handling in dump those are not considered same parent anymore,
> which causes iproute2 tc to emit additional "parent ffff:" in first line of
> filter dump output. The change in output causes filter match in tests to
> fail.

My commit simply restores the old behavior prior to 4.15, so are you
saying these tests never work correctly on kernels <= 4.15? If so,
they must be fixed no matter of my commit, right?

Thanks.

Re: [PATCH net-next] selftests: fix flower parent qdisc

[David Miller]

You put "net-next" in your subject line but failed to include
netdev in the CC: list.

Re: [PATCH net-next] selftests: fix flower parent qdisc

[Vlad Buslov]

On Wed 13 May 2020 at 21:35, Cong Wang <xiyou.wangcong@gmail.com> wrote:
> On Wed, May 13, 2020 at 10:58 AM Vlad Buslov <vladbu@mellanox.com> wrote:
>>
>> Flower tests used to create ingress filter with specified parent qdisc
>> "parent ffff:" but dump them on "ingress". With recent commit that fixed
>> tcm_parent handling in dump those are not considered same parent anymore,
>> which causes iproute2 tc to emit additional "parent ffff:" in first line of
>> filter dump output. The change in output causes filter match in tests to
>> fail.
>
> My commit simply restores the old behavior prior to 4.15, so are you
> saying these tests never work correctly on kernels <= 4.15? If so,
> they must be fixed no matter of my commit, right?
>
> Thanks.

I think all of these tests are newer than 4.15.

Re: [PATCH net-next] selftests: fix flower parent qdisc

[Vlad Buslov]

On Wed 13 May 2020 at 22:57, David Miller <davem@davemloft.net> wrote:
> You put "net-next" in your subject line but failed to include
> netdev in the CC: list.

Sorry. Will resend with proper distribution.