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Date: Tue, 16 Mar 2021 11:55:28 +0200 From: Vladimir Oltean <olteanv@...il.com> To: DENG Qingfang <dqfext@...il.com> Cc: Florian Fainelli <f.fainelli@...il.com>, Sean Wang <sean.wang@...iatek.com>, Landen Chao <Landen.Chao@...iatek.com>, Andrew Lunn <andrew@...n.ch>, Vivien Didelot <vivien.didelot@...il.com>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>, Philipp Zabel <p.zabel@...gutronix.de>, Russell King <linux@...linux.org.uk>, netdev <netdev@...r.kernel.org>, Linux ARM <linux-arm-kernel@...ts.infradead.org>, "moderated list:ARM/Mediatek SoC support" <linux-mediatek@...ts.infradead.org>, linux-kernel@...r.kernel.org, Frank Wunderlich <frank-w@...lic-files.de>, René van Dorst <opensource@...rst.com> Subject: Re: [PATCH net-next] net: dsa: mt7530: support MDB and bridge flag operations On Tue, Mar 16, 2021 at 12:36:24PM +0800, DENG Qingfang wrote: > On Tue, Mar 16, 2021 at 5:15 AM Vladimir Oltean <olteanv@...il.com> wrote: > > > > Actually this is just how Qingfang explained it: > > https://patchwork.kernel.org/project/netdevbpf/patch/20210224081018.24719-1-dqfext@gmail.com/ > > > > I just assume that MT7530/7531 switches don't need to enable flooding on > > user ports when the only possible traffic source is the CPU port - the > > CPU port can inject traffic into any port regardless of egress flooding > > setting. If that's not true, I don't see how traffic in standalone ports > > mode would work after this patch. > > Correct. Don't forget the earlier version of this driver (before my > attempt to fix roaming) disabled unknown unicast flooding (trapped to > CPU) in the same way. Ok, so in practice you don't really need to touch this register if it's already all ones.
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