netdev - inter-qdisc communication?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <5aea96db-9248-6cff-d985-d4cd91a429@tarent.de>
Date:   Fri, 26 Aug 2022 21:34:47 +0200 (CEST)
From:   Thorsten Glaser <t.glaser@...ent.de>
To:     netdev@...r.kernel.org
Subject: inter-qdisc communication?

Hi,

is it possible for qdiscs to communicate with each other?

For example, if I have a normal egress qdisc and an ingress
qdisc, how could I “share” configuration values so that e.g.
a “tc change” can affect both in one run?

Use case: we have a normal egress qdisc that does a lot of
things. Now we add artificial latency, and we need to do that
on ingress as well, for symmetry, obviously, so I’ll write a
small qdisc that does just that for ingress. But we’re already
firing a “tc change” to the egress qdisc every few ms or so,
and I don’t want to double that overhead.

bye,
//mirabilos
-- 
Infrastrukturexperte • tarent solutions GmbH
Am Dickobskreuz 10, D-53121 Bonn • http://www.tarent.de/
Telephon +49 228 54881-393 • Fax: +49 228 54881-235
HRB AG Bonn 5168 • USt-ID (VAT): DE122264941
Geschäftsführer: Dr. Stefan Barth, Kai Ebenrett, Boris Esser, Alexander Steeg

                        ****************************************************
/⁀\ The UTF-8 Ribbon
╲ ╱ Campaign against      Mit dem tarent-Newsletter nichts mehr verpassen:
 ╳  HTML eMail! Also,     https://www.tarent.de/newsletter
╱ ╲ header encryption!
                        ****************************************************