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

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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.



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