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Re: [tcpm] Milestones changed for tcpm WG

Joseph Touch <touch@strayalpha.com> Tue, 04 May 2021 16:59 UTC

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From: Joseph Touch <touch@strayalpha.com>
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Date: Tue, 04 May 2021 09:59:06 -0700
Cc: tcpm IETF list <tcpm@ietf.org>, tcpm-chairs <tcpm-chairs@ietf.org>
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To: Yoshifumi Nishida <nsd.ietf@gmail.com>
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Subject: Re: [tcpm] Milestones changed for tcpm WG
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PS ---

> On May 3, 2021, at 9:47 PM, Joe Touch <touch@strayalpha.com> wrote:
> 
> Yoshi,
>> ...
>> I think that would be helpful for the doc. But, I also think this doc should have a clear vision on the interaction with TSO beforehand. 
>> I think we should have a consensus on this point such as:
>> 
>> * EDO should not be used with TSO
>> * It's fine to use EDO with TSO in any circumstances.
>> * it's fine to use EDO with TSO under a certain conditions
>> * The draft does not need to specify anything for TSO as it's out of scope of the doc.
> 
> These are not decisions for the WG. TSO isn’t a single thing; it’s a nickname for an implementation optimization.  Like all such optimizations, it’s always fine when it complies with specs and not when it doesn’t.
> 
> I.e., everything stated above is equally possible if you replace “TSO” with “Linux”.
> 
> It is out of scope for the WG to state anything about either (TSO or Linux) other then “it’s ok if it complies with secs and not when it doesn’t”.
> 
> This is not the doc to point out that TSO (or any other implementation) sometimes breaks TCPs rules or that these, like all options, put TCP behavior at risk when that happens.
> 
> Joe

FWIW, Sec 5.3 already indicates this.

Joe

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