From: Simon Horman <simon.horman@corigine•com>
To: netdev@kapio-technology•com
Cc: davem@davemloft•net, kuba@kernel•org, netdev@vger•kernel.org,
"Florian Fainelli" <f.fainelli@gmail•com>,
"Andrew Lunn" <andrew@lunn•ch>,
"Vladimir Oltean" <olteanv@gmail•com>,
"Eric Dumazet" <edumazet@google•com>,
"Paolo Abeni" <pabeni@redhat•com>,
"Kurt Kanzenbach" <kurt@linutronix•de>,
"Hauke Mehrtens" <hauke@hauke-m•de>,
"Woojung Huh" <woojung.huh@microchip•com>,
"maintainer:MICROCHIP KSZ SERIES ETHERNET SWITCH DRIVER"
<UNGLinuxDriver@microchip•com>,
"Sean Wang" <sean.wang@mediatek•com>,
"Landen Chao" <Landen.Chao@mediatek•com>,
"DENG Qingfang" <dqfext@gmail•com>,
"Matthias Brugger" <matthias.bgg@gmail•com>,
"Claudiu Manoil" <claudiu.manoil@nxp•com>,
"Alexandre Belloni" <alexandre.belloni@bootlin•com>,
"Clément Léger" <clement.leger@bootlin•com>,
"Jiri Pirko" <jiri@resnulli•us>,
"Ivan Vecera" <ivecera@redhat•com>,
"Roopa Prabhu" <roopa@nvidia•com>,
"Nikolay Aleksandrov" <razor@blackwall•org>,
"Russell King" <linux@armlinux•org.uk>,
"Christian Marangi" <ansuelsmth@gmail•com>,
"open list" <linux-kernel@vger•kernel.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-arm-kernel@lists•infradead.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@lists•infradead.org>,
"open list:RENESAS RZ/N1 A5PSW SWITCH DRIVER"
<linux-renesas-soc@vger•kernel.org>,
"moderated list:ETHERNET BRIDGE"
<bridge@lists•linux-foundation.org>
Subject: Re: [PATCH net-next 3/5] drivers: net: dsa: add fdb entry flags incoming to switchcore drivers
Date: Fri, 3 Feb 2023 09:17:06 +0100 [thread overview]
Message-ID: <Y9zDApc6nDO2RzOb@corigine.com> (raw)
In-Reply-To: <0b021777dfc1825b6565c0d9dbd6dbef@kapio-technology.com>
On Thu, Feb 02, 2023 at 05:45:56PM +0100, netdev@kapio-technology•com wrote:
> On 2023-01-31 19:54, Simon Horman wrote:
> > > --- a/drivers/net/dsa/b53/b53_common.c
> > > +++ b/drivers/net/dsa/b53/b53_common.c
> > > @@ -1684,11 +1684,15 @@ static int b53_arl_op(struct b53_device
> > > *dev, int op, int port,
> > >
> > > int b53_fdb_add(struct dsa_switch *ds, int port,
> > > const unsigned char *addr, u16 vid,
> > > - struct dsa_db db)
> > > + u16 fdb_flags, struct dsa_db db)
> > > {
> > > struct b53_device *priv = ds->priv;
> > > int ret;
> > >
> > > + /* Ignore entries with set flags */
> > > + if (fdb_flags)
> > > + return 0;
> >
> >
> > Would returning -EOPNOTSUPP be more appropriate?
> >
> > ...
>
> I don't think that would be so good, as the command
>
> bridge fdb replace ADDR dev <DEV> master dynamic
>
> is a valid command and should not generate errors. When ignored by the
> driver, it will just install a dynamic FDB entry in the bridge, and the
> bridge will age it.
Sure, I agree that it's not necessarily an error that needs
to propagate to the user.
My assumption, which I now see is likely false, is that drivers
could return -EOPNOTSUPP, to indicate to higher layers that the operation
is not supported. But the higher layers may not propagate that.
But it seems that is not the case here. So I think return 0 is fine
after all. Sorry for the noise.
next prev parent reply other threads:[~2023-02-03 8:17 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-30 17:34 [PATCH net-next 0/5] ATU and FDB synchronization on locked ports Hans J. Schultz
2023-01-30 17:34 ` [PATCH net-next 1/5] net: bridge: add dynamic flag to switchdev notifier Hans J. Schultz
2023-02-01 18:10 ` Ido Schimmel
2023-02-02 7:28 ` netdev
2023-02-02 16:11 ` Ido Schimmel
2023-02-02 16:38 ` netdev
2023-02-03 16:14 ` Ido Schimmel
2023-02-03 16:26 ` Vladimir Oltean
2023-02-03 16:27 ` netdev
2023-02-03 17:06 ` Ido Schimmel
2023-01-30 17:34 ` [PATCH net-next 2/5] net: dsa: propagate flags down towards drivers Hans J. Schultz
2023-01-30 17:34 ` [PATCH net-next 3/5] drivers: net: dsa: add fdb entry flags incoming to switchcore drivers Hans J. Schultz
2023-01-31 18:54 ` Simon Horman
2023-02-02 16:45 ` netdev
2023-02-03 8:17 ` Simon Horman [this message]
2023-02-03 18:41 ` netdev
2023-01-30 17:34 ` [PATCH net-next 4/5] net: bridge: ensure FDB offloaded flag is handled as needed Hans J. Schultz
2023-02-01 18:24 ` Ido Schimmel
2023-02-02 7:32 ` netdev
2023-01-30 17:34 ` [PATCH net-next 5/5] net: dsa: mv88e6xxx: implementation of dynamic ATU entries Hans J. Schultz
2023-01-31 18:56 ` Simon Horman
2023-02-02 17:00 ` netdev
2023-02-03 8:20 ` Simon Horman
2023-02-03 20:44 ` Vladimir Oltean
2023-02-04 8:12 ` Simon Horman
2023-02-04 8:48 ` netdev
2023-02-06 16:02 ` Simon Horman
2023-02-14 21:14 ` Hans Schultz
2023-02-17 17:44 ` Vladimir Oltean
2023-02-20 14:11 ` Simon Horman
2023-01-31 19:25 ` [PATCH net-next 0/5] ATU and FDB synchronization on locked ports Ido Schimmel
2023-02-02 7:37 ` netdev
2023-02-02 15:43 ` Ido Schimmel
2023-02-02 16:19 ` netdev
2023-02-02 16:36 ` Ido Schimmel
2023-02-03 21:14 ` Vladimir Oltean
2023-02-02 17:18 ` netdev
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