linux-kernel - Re: [PATCH net 3/4] selftests: openvswitch: Skip drop testing on older kernels

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Message-ID: <f7ta5spcm53.fsf@redhat.com>
Date:   Wed, 11 Oct 2023 09:40:56 -0400
From:   Aaron Conole <aconole@...hat.com>
To:     Paolo Abeni <pabeni@...hat.com>
Cc:     netdev@...r.kernel.org, dev@...nvswitch.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Pravin B Shelar <pshelar@....org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Adrian Moreno <amorenoz@...hat.com>,
        Eelco Chaudron <echaudro@...hat.com>
Subject: Re: [PATCH net 3/4] selftests: openvswitch: Skip drop testing on
 older kernels

Paolo Abeni <pabeni@...hat.com> writes:

> On Fri, 2023-10-06 at 11:12 -0400, Aaron Conole wrote:
>> Kernels that don't have support for openvswitch drop reasons also
>> won't have the drop counter reasons, so we should skip the test
>> completely.  It previously wasn't possible to build a test case
>> for this without polluting the datapath, so we introduce a mechanism
>> to clear all the flows from a datapath allowing us to test for
>> explicit drop actions, and then clear the flows to build the
>> original test case.
>> 
>> Fixes: 4242029164d6 ("selftests: openvswitch: add explicit drop testcase")
>> Signed-off-by: Aaron Conole <aconole@...hat.com>
>> ---
>>  .../selftests/net/openvswitch/openvswitch.sh  | 17 ++++++++++
>>  .../selftests/net/openvswitch/ovs-dpctl.py    | 34 +++++++++++++++++++
>>  2 files changed, 51 insertions(+)
>> 
>> diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh
>> index 2a0112be7ead5..ca7090e71bff2 100755
>> --- a/tools/testing/selftests/net/openvswitch/openvswitch.sh
>> +++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh
>> @@ -144,6 +144,12 @@ ovs_add_flow () {
>>  	return 0
>>  }
>>  
>> +ovs_del_flows () {
>> +	info "Deleting all flows from DP: sbx:$1 br:$2"
>> +	ovs_sbx "$1" python3 $ovs_base/ovs-dpctl.py del-flows "$2"
>> +        return 0
>
> The chunk above mixes whitespaces and tabs for indenting, please be
> consistent.

Thanks.  Will fix in v2

> Thanks!
>
> Paolo