Re: [PATCH v5 net-next 6/6] selftests: forwarding: add test of MAC-Auth Bypass to locked port tests

[netdev]

On 2022-09-08 13:20, Vladimir Oltean wrote:
> On Thu, Sep 08, 2022 at 01:14:59PM +0200, netdev@xxxxxxxxxxxxxxxxxxxx 
> wrote:
> > On 2022-09-08 09:59, Ido Schimmel wrote:
> > > On Wed, Sep 07, 2022 at 11:10:07PM +0200, netdev@xxxxxxxxxxxxxxxxxxxx wrote:
> > > > I am at the blackhole driver implementation now, as I suppose that the
> > > > iproute2 command should work with the mv88e6xxx driver when adding blackhole
> > > > entries (with a added selftest)?
> > > > I decided to add the blackhole feature as new ops for drivers with functions
> > > > blackhole_fdb_add() and blackhole_fdb_del(). Do you agree with that approach?
> > >
> > > I assume you are talking about extending 'dsa_switch_ops'?
> >
> > Yes, that is the idea.
> >
> > > If so, it's up to the DSA maintainers to decide.
>
> What will be the usefulness of adding a blackhole FDB entry from user 
> space?

With the software bridge it could be used to signal a untrusted host in 
connection with a locked port entry attempt. I don't see so much use 
other that test purposes with the driver though.