Re: [PATCH net-next] net, sched: add clsact qdisc

On Wed, Jan 06, 2016 at 02:00:56AM +0100, Daniel Borkmann wrote:

I decided to extend the sch_ingress module with clsact functionality so
that commonly used code can be reused, the module is being aliased with
sch_clsact so that it can be auto-loaded properly. Alternative would have been
to add a flag when initializing ingress to alter its behaviour plus aliasing
to a different name (as it's more than just ingress). However, the first would
end up, based on the flag, choosing the new/old behaviour by calling different
function implementations to handle each anyway, the latter would require to
register ingress qdisc once again under different alias. So, this really begs
to provide a minimal, cleaner approach to have Qdisc_ops and Qdisc_class_ops
by its own that share callbacks used by both.

...

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

we've been going back and forth on the design and this final approach
presented seems to be the best, since pros outweigh the cons.

Acked-by: Alexei Starovoitov <ast@kernel.org>