netdev - RE: [PATCH net-next 1/1] selftests/net: Add packetdrill packetdrill cases

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Message-ID:
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Date: Fri, 9 Jan 2026 08:53:14 +0000
From: "Chia-Yu Chang (Nokia)" <chia-yu.chang@...ia-bell-labs.com>
To: Neal Cardwell <ncardwell@...gle.com>
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Subject: RE: [PATCH net-next 1/1] selftests/net: Add packetdrill packetdrill
 cases

---Original Message-----
> From: Neal Cardwell <ncardwell@...gle.com>
> Sent: Friday, January 9, 2026 12:21 AM
> To: Chia-Yu Chang (Nokia) <chia-yu.chang@...ia-bell-labs.com>
> Cc: pabeni@...hat.com; edumazet@...gle.com; parav@...dia.com; linux-doc@...r.kernel.org; corbet@....net; horms@...nel.org; dsahern@...nel.org; kuniyu@...gle.com; bpf@...r.kernel.org; netdev@...r.kernel.org; dave.taht@...il.com; jhs@...atatu.com; kuba@...nel.org; stephen@...workplumber.org; xiyou.wangcong@...il.com; jiri@...nulli.us; davem@...emloft.net; andrew+netdev@...n.ch; donald.hunter@...il.com; ast@...erby.net; liuhangbin@...il.com; shuah@...nel.org; linux-kselftest@...r.kernel.org; ij@...nel.org; Koen De Schepper (Nokia) <koen.de_schepper@...ia-bell-labs.com>; g.white@...lelabs.com; ingemar.s.johansson@...csson.com; mirja.kuehlewind@...csson.com; cheshire <cheshire@...le.com>; rs.ietf@....at; Jason_Livingood@...cast.com; Vidhi Goel <vidhi_goel@...le.com>; Willem de Bruijn <willemb@...gle.com>
> Subject: Re: [PATCH net-next 1/1] selftests/net: Add packetdrill packetdrill cases
>
>
> CAUTION: This is an external email. Please be very careful when clicking links or opening attachments. See the URL nok.it/ext for additional information.
>
>
>
> On Thu, Jan 8, 2026 at 5:46 PM Neal Cardwell <ncardwell@...gle.com> wrote:
> >
> > On Thu, Jan 8, 2026 at 10:58 AM <chia-yu.chang@...ia-bell-labs.com> wrote:
> > >
> > > From: Chia-Yu Chang <chia-yu.chang@...ia-bell-labs.com>
> > >
> > > Linux Accurate ECN test sets using ACE counters and AccECN options
> > > to cover several scenarios: Connection teardown, different ACK
> > > conditions, counter wrapping, SACK space grabbing, fallback schemes,
> > > negotiation retransmission/reorder/loss, AccECN option drop/loss,
> > > different handshake reflectors, data with marking, and different sysctl values.
> > >
> > > Co-developed-by: Ilpo Järvinen <ij@...nel.org>
> > > Signed-off-by: Ilpo Järvinen <ij@...nel.org>
> > > Co-developed-by: Neal Cardwell <ncardwell@...gle.com>
> > > Signed-off-by: Neal Cardwell <ncardwell@...gle.com>
> > > ---
> >
> > Chia-Yu, thank you for posting the packetdrill tests.
> >
> > A couple thoughts:
> >
> > (1) These tests are using the experimental AccECN packetdrill support
> > that is not in mainline packetdrill yet. Can you please share the
> > github URL for the version of packetdrill you used? I will work on
> > merging the appropriate experimental AccECN packetdrill support into
> > the Google packetdrill mainline branch.
>
> Oh, for that part I see you mentioned this already in the cover letter:
>
>   The used packetdrill is commit 6f2116af6b7e1936a53e80ab31b77f74abda1aaa
>   of the branch: https://github.com/minuscat/packetdrill_accecn
>
> Thanks!
> neal

Hi Neal,

You're right, I will change the tile into "selftests/net: Add AccECN packetdrill cases"
And this packetdrill is forked from branch "l4s-packetdrill-2022-08-21-v1"  of https://github.com/google/bbr.git

If you would like me to test on newer packetdrill, feel free to let me know.

Thanks.
Chia-Yu