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Date: Sun, 11 Sep 2022 03:13:46 +0300 From: Vladimir Oltean <olteanv@...il.com> To: netdev@...io-technology.com Cc: Ido Schimmel <idosch@...dia.com>, davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org, Florian Fainelli <f.fainelli@...il.com>, Andrew Lunn <andrew@...n.ch>, Vivien Didelot <vivien.didelot@...il.com>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Kurt Kanzenbach <kurt@...utronix.de>, Hauke Mehrtens <hauke@...ke-m.de>, Woojung Huh <woojung.huh@...rochip.com>, 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>, Claudiu Manoil <claudiu.manoil@....com>, Alexandre Belloni <alexandre.belloni@...tlin.com>, Jiri Pirko <jiri@...nulli.us>, Ivan Vecera <ivecera@...hat.com>, Roopa Prabhu <roopa@...dia.com>, Nikolay Aleksandrov <razor@...ckwall.org>, Shuah Khan <shuah@...nel.org>, Christian Marangi <ansuelsmth@...il.com>, Daniel Borkmann <daniel@...earbox.net>, Yuwei Wang <wangyuweihx@...il.com>, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, bridge@...ts.linux-foundation.org, linux-kselftest@...r.kernel.org Subject: Re: [PATCH v5 net-next 6/6] selftests: forwarding: add test of MAC-Auth Bypass to locked port tests On Fri, Sep 09, 2022 at 03:11:56PM +0200, netdev@...io-technology.com wrote: > > > > On Wed, Sep 07, 2022 at 11:10:07PM +0200, netdev@...io-technology.com wrote: > > > > > I am at the blackhole driver implementation now, as I suppose that the > > > > > iproute2 command should work with the mv88e6xxx driver when adding blackhole > > > > > entries (with a added selftest)? > > > > > I decided to add the blackhole feature as new ops for drivers with functions > > > > > blackhole_fdb_add() and blackhole_fdb_del(). Do you agree with that approach? > > > > > > > > I assume you are talking about extending 'dsa_switch_ops'? > > > > > > Yes, that is the idea. > > > > > > > If so, it's up to the DSA maintainers to decide. > > > > What will be the usefulness of adding a blackhole FDB entry from user > > space? > > With the software bridge it could be used to signal a untrusted host in > connection with a locked port entry attempt. I don't see so much use other > that test purposes with the driver though. Not a huge selling point, to be honest. Can't the blackhole flag remain settable only in the device -> bridge direction, with user space just reading it?
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