Re: [PATCH v1 net-next] net: dsa: Allow only up to two HSR HW offloaded ports for KSZ9477
From: Lukasz Majewski
Date: Tue Jun 18 2024 - 11:02:35 EST
Hi Andrew,
> > For me the:
> >
> > NL_SET_ERR_MSG_MOD(extack, "Cannot offload more than two ports (in
> > use=0x%x)", dev->hsr_ports);
> >
> > is fine - as it informs that no more HSR offloading is possible (and
> > allows to SW based RedBox/HSR-SAN operation).
>
> Does user space actually get to see it? I would expect the HSR code
> sees the EOPNOTSUPP, does not consider it an fatal error, and return 0
> to user space.
>
> If userspace does see it, maybe we should make it clearer it is not an
> actually error.
>
> "Cannot offload more than two ports, using software bridging"
>
> so something similar.
>
Exactly - this is useful information - not error indication.
(The same case is when we do want to set the MAC address already
"taken" by ksz9477 HSR configuration.)
> Andrew
Best regards,
Lukasz Majewski
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