netdev - Re: [PATCH net-next 0/9] mlxsw: Add PTP support for Spectrum-2 and newer ASICs

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Message-ID: <YuH9+/7OrCLzb8vJ@hoboy.vegasvil.org>
Date:   Wed, 27 Jul 2022 20:09:47 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Ido Schimmel <idosch@...dia.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
        pabeni@...hat.com, edumazet@...gle.com, petrm@...dia.com,
        amcohen@...dia.com, danieller@...dia.com, mlxsw@...dia.com
Subject: Re: [PATCH net-next 0/9] mlxsw: Add PTP support for Spectrum-2 and
 newer ASICs

On Wed, Jul 27, 2022 at 05:44:49PM +0300, Ido Schimmel wrote:

> Right. The hardware can support a TC operation, but I did not find any
> Linux interfaces to configure it (did I miss something?) nor got any
> requirements to support it at the moment.

linuxptp can operate as a TC, but it sounds like your HW does E2E TC
without any software support.

P2P TC does need SW support, because the ports must generate peer
delay requests.

Thanks,
Richard