netdev - Re: [bug, bisected] pfifo_fast causes packet reordering

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Message-ID: <456f45a6-43b5-2ee5-bdcc-859f8d7d4a9a@gmail.com>
Date:   Sat, 24 Mar 2018 07:26:25 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     Jakob Unterwurzacher <jakob.unterwurzacher@...obroma-systems.com>,
        Dave Taht <dave.taht@...il.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        "linux-can@...r.kernel.org" <linux-can@...r.kernel.org>,
        Martin Elshuber <martin.elshuber@...obroma-systems.com>
Subject: Re: [bug, bisected] pfifo_fast causes packet reordering

On 03/22/2018 03:16 AM, Jakob Unterwurzacher wrote:
> On 21.03.18 21:52, John Fastabend wrote:
>> Can you try this,
>>
>> diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
>> index d4907b5..1e596bd 100644
>> --- a/include/net/sch_generic.h
>> +++ b/include/net/sch_generic.h
>> @@ -30,6 +30,7 @@ struct qdisc_rate_table {
>>   enum qdisc_state_t {
>>          __QDISC_STATE_SCHED,
>>          __QDISC_STATE_DEACTIVATED,
>> +       __QDISC_STATE_RUNNING,
>>   };
>> [...]
> 
> Tested, looks good. No OOO observed, no side effects observed, iperf
> numbers on Gigabit Ethernet look the same.
> 
> Thanks,
> Jakob

Thanks, I'll send out an official patch today.

.John