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Message-ID: <20230203204422.4wrhyathxfhj6hdt@skbuf>
Date: Fri, 3 Feb 2023 22:44:22 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: Simon Horman <simon.horman@...igine.com>
Cc: netdev@...io-technology.com, davem@...emloft.net, kuba@...nel.org,
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Hauke Mehrtens <hauke@...ke-m.de>,
Woojung Huh <woojung.huh@...rochip.com>,
"maintainer:MICROCHIP KSZ SERIES ETHERNET SWITCH DRIVER"
<UNGLinuxDriver@...rochip.com>, Sean Wang <sean.wang@...iatek.com>,
Landen Chao <Landen.Chao@...iatek.com>,
DENG Qingfang <dqfext@...il.com>,
Matthias Brugger <matthias.bgg@...il.com>,
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Nikolay Aleksandrov <razor@...ckwall.org>,
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open list <linux-kernel@...r.kernel.org>,
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Subject: Re: [PATCH net-next 5/5] net: dsa: mv88e6xxx: implementation of
dynamic ATU entries
On Fri, Feb 03, 2023 at 09:20:22AM +0100, Simon Horman wrote:
> > else if (someflag)
> > dosomething();
> >
> > For now only one flag will actually be set and they are mutually exclusive,
> > as they will not make sense together with the potential flags I know, but
> > that can change at some time of course.
>
> Yes, I see that is workable. I do feel that checking for other flags would
> be a bit more robust. But as you say, there are none. So whichever
> approach you prefer is fine by me.
The model we have for unsupported bits in the SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS
and SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS handlers is essentially this:
if (flags & ~(supported_flag_mask))
return -EOPNOTSUPP;
if (flags & supported_flag_1)
...
if (flags & supported_flag_2)
...
I suppose applying this model here would address Simon's extensibility concern.
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