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From: Hans Schultz <netdev@kapio-technology.com>
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Date: Tue, 28 Mar 2023 13:04:23 +0200
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Subject: Re: [Bridge] [PATCH v2 net-next 2/6] net: dsa: propagate flags down
 towards drivers
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To: Vladimir Oltean <olteanv@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>, Alexandre Belloni <alexandre.belloni@bootlin.com>, Nikolay Aleksandrov <razor@blackwall.org>, Kurt Kanzenbach <kurt@linutronix.de>, Eric Dumazet <edumazet@google.com>, "open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@vger.kernel.org>, Shuah Khan <shuah@kernel.org>, Ivan Vecera <ivecera@redhat.com>, Florian Fainelli <f.fainelli@gmail.com>, Ido Schimmel <idosch@nvidia.com>, "moderated list:ETHERNET BRIDGE" <bridge@lists.linux-foundation.org>, Roopa Prabhu <roopa@nvidia.com>, kuba@kernel.org, Paolo Abeni <pabeni@redhat.com>, =?utf-8?Q?Cl=C3=A9ment_L=C3=A9ger?= <clement.leger@bootlin.com>, Christian Marangi <ansuelsmth@gmail.com>, Woojung Huh <woojung.huh@microchip.com>, Landen Chao <Landen.Chao@mediatek.com>, Jiri Pirko <jiri@resnulli.us>, Hauke Mehrtens <hauke@hauke-m.de>, Sean Wang <sean.wang@mediatek.com>, DENG Qingfang <dqfext@gmail.com>, Claudiu Manoil <claudiu.manoil@nxp.com>, "moderated list:ARM/Mediatek SoC
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 ETHERNET SWITCH DRIVER" <UNGLinuxDriver@microchip.com>, "open list:RENESAS RZ/N1
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On Tue, Mar 28, 2023 at 01:59, Vladimir Oltean <olteanv@gmail.com> wrote:
>
> which idea is that, again?

So I cannot us the offloaded flag as it is added by DSA in the common
case when using 'bridge fdb replace ... dynamic'.

The idea is then to use the ext_learn flag instead, which is not aged by
the bridge. To do this the driver (mv88e6xxx) will send a
SWITCHDEV_FDB_ADD_TO_BRIDGE switchdev event when the new dynamic flag is
true. The function sending this event will then be named
mv88e6xxx_add_fdb_synth_learned() in
drivers/net/dsa/mv88e6xxx/switchdev.c, replacing the
mv88e6xxx_set_fdb_offloaded() function but in most part the same
content, just another event type.