netdev - RE: [PATCH v5 net-next 0/4] Add ethtool interface for RClocks

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Date:   Wed, 19 Jan 2022 22:33:08 +0000
From:   "Kubalewski, Arkadiusz" <arkadiusz.kubalewski@...el.com>
To:     Vadim Fedorenko <vfedorenko@...ek.ru>,
        "Machnikowski, Maciej" <maciej.machnikowski@...el.com>,
        Jakub Kicinski <kuba@...nel.org>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "richardcochran@...il.com" <richardcochran@...il.com>,
        "Byagowi, Ahmad" <abyagowi@...com>,
        "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
        "idosch@...sch.org" <idosch@...sch.org>,
        "mkubecek@...e.cz" <mkubecek@...e.cz>,
        "saeed@...nel.org" <saeed@...nel.org>,
        "michael.chan@...adcom.com" <michael.chan@...adcom.com>,
        "petrm@...dia.com" <petrm@...dia.com>
Subject: RE: [PATCH v5 net-next 0/4] Add ethtool interface for RClocks

>>On 15.12.2021 12:14, Kubalewski, Arkadiusz wrote:
>>>> -----Original Message-----
>>>> From: Machnikowski, Maciej <maciej.machnikowski@...el.com>
>>>> Sent: poniedziałek, 13 grudnia 2021 09:54
>>>> To: Jakub Kicinski <kuba@...nel.org>
>>>> Cc: netdev@...r.kernel.org; intel-wired-lan@...ts.osuosl.org; 
>>>> Kubalewski, Arkadiusz <arkadiusz.kubalewski@...el.com>; 
>>>> richardcochran@...il.com; Byagowi, Ahmad <abyagowi@...com>; Nguyen, 
>>>> Anthony L <anthony.l.nguyen@...el.com>; davem@...emloft.net; 
>>>> linux-kselftest@...r.kernel.org; idosch@...sch.org; 
>>>> mkubecek@...e.cz; saeed@...nel.org; michael.chan@...adcom.com; 
>>>> petrm@...dia.com; Vadim Fedorenko <vfedorenko@...ek.ru>
>>>> Subject: RE: [PATCH v5 net-next 0/4] Add ethtool interface for 
>>>> RClocks
>>>>
>>>>> -----Original Message-----
>>>>> From: Jakub Kicinski <kuba@...nel.org>
>>>>> Sent: Friday, December 10, 2021 5:17 PM
>>>>> To: Machnikowski, Maciej <maciej.machnikowski@...el.com>
>>>>> Cc: netdev@...r.kernel.org; intel-wired-lan@...ts.osuosl.org; 
>>>>> Kubalewski, Arkadiusz <arkadiusz.kubalewski@...el.com>; 
>>>>> richardcochran@...il.com; Byagowi, Ahmad <abyagowi@...com>; Nguyen, 
>>>>> Anthony L <anthony.l.nguyen@...el.com>; davem@...emloft.net; linux- 
>>>>> kselftest@...r.kernel.org; idosch@...sch.org; mkubecek@...e.cz; 
>>>>> saeed@...nel.org; michael.chan@...adcom.com; petrm@...dia.com; 
>>>>> Vadim Fedorenko <vfedorenko@...ek.ru>
>>>>> Subject: Re: [PATCH v5 net-next 0/4] Add ethtool interface for 
>>>>> RClocks
>>>>>
>>>>> On Fri, 10 Dec 2021 14:45:46 +0100 Maciej Machnikowski wrote:
>>>>>> Synchronous Ethernet networks use a physical layer clock to 
>>>>>> syntonize the frequency across different network elements.
>>>>>>
>>>>>> Basic SyncE node defined in the ITU-T G.8264 consist of an 
>>>>>> Ethernet Equipment Clock (EEC) and have the ability to synchronize 
>>>>>> to reference frequency sources.
>>>>>>
>>>>>> This patch series is a prerequisite for EEC object and adds 
>>>>>> ability to enable recovered clocks in the physical layer of the netdev object.
>>>>>> Recovered clocks can be used as one of the reference signal by the EEC.
>>>>>>
>>>>>> Further work is required to add the DPLL subsystem, link it to the 
>>>>>> netdev object and create API to read the EEC DPLL state.
>>>>>
>>>>> You missed CCing Vadim. I guess Ccing the right people may be right 
>>>>> up there with naming things as the hardest things in SW development..
>>>>>
>>>>> Anyway, Vadim - do you have an ETA on the first chunk of the PLL work?
>>>>
>>>> Sounds about right :) thanks for adding Vadim!
>>>>
>>> 
>>> Good day Vadim,
>>> 
>>> Can we help on the new PLL interfaces?
>>> I can start some works related to that, although would need a 
>>> guidance from the expert.
>>> Where to place it?
>>> What in-kernel interfaces to use?
>>> Any other high level tips that could be useful?
>>> Or if you already started some work, could you please share some 
>>> information?
>>> 
>>Hi!
>>
>>I'm going to publish RFC till the end of the week and we will be able 
>>to continue discussion via this mailing list. I think that netlink is a 
>>good option for in-kernel interface and is easy to implement.
>>
>
>Oh, that sounds great!
>Thank you!
>

Good day Vadim,

Hope you are well!
I have been trying to find a new RFC on mailing list, but could not find it.
I guess, it was not submitted yet?
Could you please share your current schedule for this task?
Or maybe we could help somehow?