inter-qdisc communication?

[Thorsten Glaser <t.glaser@tarent.de>]

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
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