netdev - Re: [PATCH net-next 3/3] docs: networking: timestamping: add a set of frequently asked questions

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Message-ID: <20200722032553.GB12524@hoboy>
Date:   Tue, 21 Jul 2020 20:25:53 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Jacob Keller <jacob.e.keller@...el.com>, kuba@...nel.org,
        davem@...emloft.net, netdev@...r.kernel.org, sorganov@...il.com,
        linux-doc@...r.kernel.org
Subject: Re: [PATCH net-next 3/3] docs: networking: timestamping: add a set
 of frequently asked questions

On Tue, Jul 21, 2020 at 10:51:27PM +0300, Vladimir Oltean wrote:
> So I think the position of "just don't have software timestamping code
> in DSA and you'll be fine" won't be getting us anywhere. Either you can
> or you can't, and there isn't anything absurd about it, so sooner or
> later somebody will want to do it. The rules surrounding it, however,
> are far from being ready, or clear.
> 
> Am I missing something?

I'm just trying to make things easy for you, as the author of DSA
drivers.  There is no need to set skb flags that have no purpose
within the stack.

Nobody is demanding software time stamps from any DSA devices yet, and
so I don't see the point in solving a problem that doesn't exist.

I'm sorry if the "rules" are not clear, but if you look around the
kernel internals, you will be hard pressed to find perfectly
documented rules anywhere!

Thanks,
Richard