linux-kernel - Re: [PATCH v2 net 0/7] qbv cycle time extension/truncation

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Message-ID: <7df1364d-c327-4053-8219-f267c2e8aeea@linux.intel.com>
Date:   Fri, 10 Nov 2023 19:06:00 +0800
From:   "Abdul Rahim, Faizal" <faizal.abdul.rahim@...ux.intel.com>
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 net 0/7] qbv cycle time extension/truncation



On 8/11/2023 11:51 pm, Vladimir Oltean wrote:
> Hi Faizal,
> 
> On Tue, Nov 07, 2023 at 06:20:16AM -0500, Faizal Rahim wrote:
>> According to IEEE Std. 802.1Q-2018 section Q.5 CycleTimeExtension,
>> the Cycle Time Extension variable allows this extension of the last old
>> cycle to be done in a defined way. If the last complete old cycle would
>> normally end less than OperCycleTimeExtension nanoseconds before the new
>> base time, then the last complete cycle before AdminBaseTime is reached
>> is extended so that it ends at AdminBaseTime.
>>
>> Changes in v2:
>>
>> - Added 's64 cycle_time_correction' in 'sched_gate_list struct'.
>> - Removed sched_changed created in v1 since the new cycle_time_correction
>>    field can also serve to indicate the need for a schedule change.
>> - Added 'bool correction_active' in 'struct sched_entry' to represent
>>    the correction state from the entry's perspective and return corrected
>>    interval value when active.
>> - Fix cycle time correction logics for the next entry in advance_sched()
>> - Fix and implement proper cycle time correction logics for current
>>    entry in taprio_start_sched()
>>
>> v1 at:
>> https://lore.kernel.org/lkml/20230530082541.495-1-muhammad.husaini.zulkifli@intel.com/
> 
> I like what came of this patch series. Thanks for following up and
> taking over. I have some comments on individual patches.
> 

Hi Vladimir,

Thanks a bunch for your review and your patience with some of my basic 
mistakes.
Appreciate the time and effort you put into it.
I'll take a bit to double-check the code and retest some stuff.

Will loop back with you soon.

Cheers.