Re: [PATCH] net/sched: cls: Load net classifier modules via alias

From: Jamal Hadi Salim
Date: Wed Nov 22 2023 - 11:12:43 EST


On Wed, Nov 22, 2023 at 10:33 AM Jamal Hadi Salim <jhs@xxxxxxxxxxxx> wrote:
>
> On Wed, Nov 22, 2023 at 5:41 AM Michal Koutný <mkoutny@xxxxxxxx> wrote:
> >
> > On Tue, Nov 21, 2023 at 05:37:37PM -0500, Jamal Hadi Salim <jhs@xxxxxxxxxxxx> wrote:
> > > What's speacial about the "tcf- '' that makes it work
> > > better for filtering than existing "cls_" prefix?
> >
> > tcf-foo is an alias.
> > cls_foo is the canonical name of the kernel module.
> >
> > request_module() + blacklist (as described in modprobe.d(5)) works only
> > when calling with the alias. The actual string is not important, being
> > an alias is the crux.
> >
>
> Thanks for the explanation.
>

Out of curiosity - how did you end up looking at this? Was there
someone who complained or is it just standard procedure to add aliases
to all modules and it was on a todo list somewhere?

cheers,
jamal

> > > What about actions (prefix "act_") etc?
> >
> > I focused only on "cls_" for the first iteration. Do you want me to look
> > at other analogous loads?
>
> Yes, look at act_ and sch_
>
> cheers,
> jamal
> > Thanks,
> > Michal