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Re: Adding ECN to Transport and Recovery

Magnus Westerlund <magnus.westerlund@ericsson.com> Mon, 11 June 2018 11:15 UTC

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Subject: Re: Adding ECN to Transport and Recovery
To: Jana Iyengar <jri.ietf@gmail.com>, Christian Huitema <huitema@huitema.net>
CC: "Brian Trammell (IETF)" <ietf@trammell.ch>, Ian Swett <ianswett@google.com>, QUIC WG <quic@ietf.org>
References: <26584f2a-230b-c55e-db16-d32225c8ee4d@ericsson.com> <5a82e9ef-971f-6510-866c-9886e73796a9@ericsson.com> <20180608150833.GB13418@ubuntu-dmitri> <CAKcm_gM_OHgWcJ+ktAg9BCQx1rtHc9GFg2bZG40-NcO2MoVG9w@mail.gmail.com> <CANatvzySuzK9EO13m_UQxb4wZkYW=+6By3QMU5gKXhq69gaUag@mail.gmail.com> <790ec098-9ec9-5eff-4785-d71d9ac92059@huitema.net> <73B82E99-EFEE-4DBC-A2CA-8FA381F33C5E@trammell.ch> <CAKcm_gN-s0XVsGL2LLusvcm5_hp-Z5_9OFMkwph5m_bGMDbAtQ@mail.gmail.com> <55DA3F1D-2B09-4D25-9630-6BC85B68A3AF@huitema.net> <CACpbDcdTtQBLNhhiX_+wWCo-OzVvBKBpS-8RsYRcZ30xhefQZQ@mail.gmail.com>
From: Magnus Westerlund <magnus.westerlund@ericsson.com>
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Date: Mon, 11 Jun 2018 13:15:28 +0200
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Hi,

I agree with Jana, as there are not a clear consensus lets take any 
further modifications of the ACK frames as a separate issue. The PR have 
from my perspective no open technical content issues. I will await to 
see if the editors or any of you have any editorial issues. But, 
otherwise I expect this PR to be merged quite soon.

I will now start working on a new section for a separate PR regarding 
the ECN black hole mitigation.

Cheers

Magnus


Den 2018-06-10 kl. 19:14, skrev Jana Iyengar:
> Sounds like there's general agreement that modifying the varint to 
> contain a flag bit will add unnecessary complexity.
> Let's try to get the PR in as it is now, and if anyone really wants to 
> go merge this and the ACK frame or rename things, let's paint that 
> bikeshed separately.
>
>
>
> On Sat, Jun 9, 2018 at 8:39 AM Christian Huitema <huitema@huitema.net 
> <mailto:huitema@huitema.net>> wrote:
>
>
>
>     > On Jun 9, 2018, at 8:27 AM, Ian Swett <ianswett@google.com
>     <mailto:ianswett@google.com>> wrote:
>     >
>     > QUIC is complex enough, I think we should just call them ACK and
>     ACK_ECN.  A few implementations sending at least one ACK_ECN frame
>     per connection will dispel any belief that ACK_ECN is optional.  A
>     small amount of use will be a lot more valuable than clever naming.
>
>     Also, ECN is just one of the extensions that could be planned for
>     ACK. Timestamps would be nice too, for those who want
>     one-way-delay based congestion control.
>
>     -- Christian Huitema
>

-- 

Magnus Westerlund

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