From: DENG Qingfang <dqfext@gmail.com>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: Sasha Levin <sashal@kernel.org>,
stable@vger.kernel.org, Sean Wang <sean.wang@mediatek.com>,
Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@savoirfairelinux.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Matthias Brugger <matthias.bgg@gmail.com>,
"open list:MEDIATEK SWITCH DRIVER" <netdev@vger.kernel.org>,
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>
Subject: Re: [PATCH 4.19.y] net: dsa: mt7530: disable learning on standalone ports
Date: Thu, 2 Sep 2021 13:36:19 +0800 [thread overview]
Message-ID: <20210902053619.1824464-1-dqfext@gmail.com> (raw)
In-Reply-To: <YSi8Ky3GqBjnxbhC@kroah.com>
On Fri, Aug 27, 2021 at 12:19:23PM +0200, Greg KH wrote:
> On Tue, Aug 24, 2021 at 11:57:53PM +0800, DENG Qingfang wrote:
> > Standalone ports should have address learning disabled, according to
> > the documentation:
> > https://www.kernel.org/doc/html/v5.14-rc7/networking/dsa/dsa.html#bridge-layer
> > dsa_switch_ops on 5.10 or earlier does not have .port_bridge_flags
> > function so it has to be done differently.
> >
> > I've identified an issue related to this.
>
> What issue is that? Where was it reported?
See Florian's message here
https://lore.kernel.org/stable/20210317003549.3964522-2-f.fainelli@gmail.com/
>
> > > 2. A partial backport of this patch?
> >
> > The other part does not actually fix anything.
>
> Then why is it not ok to just take the whole thing?
>
> When backporting not-identical-patches, something almost always goes
> wrong, so we prefer to take the original commit when ever possible.
Okay. MDB and tag ops can be backported as is, and broadcast/multicast
flooding can be implemented in .port_egress_floods.
>
> thanks,
>
> greg k-h
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next prev parent reply other threads:[~2021-09-02 5:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-24 5:55 [PATCH 4.19.y] net: dsa: mt7530: disable learning on standalone ports DENG Qingfang
2021-08-24 15:29 ` Sasha Levin
2021-08-24 15:57 ` DENG Qingfang
2021-08-27 10:19 ` Greg KH
2021-09-02 5:36 ` DENG Qingfang [this message]
2021-09-02 5:58 ` Greg KH
2021-09-03 9:14 ` DENG Qingfang
2021-09-07 15:18 ` Greg KH
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