[tsvwg] Re: TSVWG Adoption Call for draft-duke-tsvwg-udp-ecn-03 as Informational, ending on 29th November 2024

Martin Duke <martin.h.duke@gmail.com> Thu, 19 December 2024 20:10 UTC

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From: Martin Duke <martin.h.duke@gmail.com>
Date: Thu, 19 Dec 2024 12:10:09 -0800
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To: Max Franke <mfranke=40inet.tu-berlin.de@dmarc.ietf.org>
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CC: Neal Cardwell <ncardwell=40google.com@dmarc.ietf.org>, Ingemar Johansson S <ingemar.s.johansson=40ericsson.com@dmarc.ietf.org>, Gorry Fairhurst <gorry@erg.abdn.ac.uk>, tsvwg@ietf.org
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Subject: [tsvwg] Re: TSVWG Adoption Call for draft-duke-tsvwg-udp-ecn-03 as Informational, ending on 29th November 2024
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Thanks, I filed issue #14 to clarify this.

On Wed, Nov 13, 2024 at 7:37 AM Max Franke <mfranke=
40inet.tu-berlin.de@dmarc.ietf.org> wrote:

> I also support adoption of this draft with one minor comment.
>
> „On Apple and FreeBSD hosts, the application only sets the
> IPPROTO_IPV6-level socket option with name IPV6_RECVTCLASS; setting an
> IPPROTO_IP-level socket option on an IPv6 socket results in an error. In
> particular this applies to the IPPROTO_IP-level socket option with the name
> IP_RECVTOS.“
>
> I assume this means that setting IPV6_RECVTCLASS is enough to receive ECN
> marks on all incoming packets on Apple/FreeBSD. If this is the case this
> could potentially be stated slightly more clearly as currently it could be
> understood that you can’t set the v4 option on those socket and thus not
> receive marks on v4 packets.
>
> Best,
>
> Max
>
> Am 13.11.2024 um 15:04 schrieb Marten Seemann <martenseemann@gmail.com>:
>
> 
> Speaking as an individual, I support adoption of this document.
> It would've been very helpful when I implemented ECN support in quic-go.
>
> On Wed, 13 Nov 2024 at 13:47, Neal Cardwell <ncardwell=
> 40google.com@dmarc.ietf.org> wrote:
>
>> Hi all,
>>
>> I support adopting this draft as a basis for work on  documenting ECN
>> support for UDP.
>>
>> I agree this is a very important topic, and a topic where more
>> information would be very useful.
>>
>> best regards,
>> neal
>>
>>
>> On Wed, Nov 13, 2024 at 5:53 AM Ingemar Johansson S <ingemar.s.johansson=
>> 40ericsson.com@dmarc.ietf.org> wrote:
>>
>>> Hi
>>>
>>> Having fiddled with these ECN bits and in the process trying to dig up
>>> the best ways to do it on the internet....
>>> Yes, I definitely support the adoption of this draft.
>>>
>>>
>>>
>>> /Ingemar Johansson
>>>
>>>
>>>
>>> *From:* Gorry Fairhurst <gorry@erg.abdn.ac.uk>
>>> *Sent:* Wednesday, 13 November 2024 08:57
>>> *To:* tsvwg@ietf.org
>>> *Subject:* [tsvwg] TSVWG Adoption Call for draft-duke-tsvwg-udp-ecn-03
>>> as Informational, ending on 29th November 2024
>>>
>>>
>>>
>>> Hello TSV WG,
>>>
>>>
>>> This is a formal adoption call that will run 2 weeks, ending on 29th
>>> November 2024. Please respond to this email thread with any comments
>>> indicating support or objection to adopting this draft as a basis for
>>> work on ECN support for UDP.
>>>
>>> During IETF-121, the WG discussed "Configuring UDP Sockets for ECN for
>>> Common Platforms" (draft-duke-tsvwg-udp-ecn)  and the sense in the room
>>> indicated some support for adoption, this email provides an opportunity
>>> to contribute comments on this planned work.
>>>
>>> Best wishes,
>>> Gorry and Marten
>>> (tsvwg co-chairs)
>>>
>>>
>>>
>>> See:
>>>
>>> https://datatracker.ietf.org/doc/draft-duke-tsvwg-udp-ecn/
>>>
>>>
>>>
>>> Abstract
>>>
>>>    Explicit Congestion Notification (ECN) applies to all transport
>>>
>>>    protocols in principle.  However, it had limited deployment for UDP
>>>
>>>    until QUIC became widely adopted.  As a result, documentation of UDP
>>>
>>>    socket APIs for ECN on various platforms is sparse.  This document
>>>
>>>    records the results of experimenting with these APIs in order to get
>>>
>>>    ECN working on UDP for Chromium on Apple, Linux, and Windows
>>>
>>>    platforms.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>