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From: Vladimir Oltean <vladimir.oltean@nxp.com>
To: Ido Schimmel <idosch@idosch.org>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	Jakub Kicinski <kuba@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Andrew Lunn <andrew@lunn.ch>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Vivien Didelot <vivien.didelot@gmail.com>,
	Jiri Pirko <jiri@resnulli.us>,
	Tobias Waldekranz <tobias@waldekranz.com>,
	Roopa Prabhu <roopa@nvidia.com>,
	Nikolay Aleksandrov <nikolay@nvidia.com>,
	Stephen Hemminger <stephen@networkplumber.org>,
	"bridge@lists.linux-foundation.org" 
	<bridge@lists.linux-foundation.org>,
	Grygorii Strashko <grygorii.strashko@ti.com>,
	Marek Behun <kabel@blackhole.sk>,
	DENG Qingfang <dqfext@gmail.com>
Subject: Re: [PATCH v5 net-next 00/10] Let switchdev drivers offload and unoffload bridge ports at their own convenience
Date: Tue, 20 Jul 2021 14:46:18 +0000	[thread overview]
Message-ID: <20210720144617.ptqt5mqlw5stidep@skbuf> (raw)
In-Reply-To: <YPbcxPKjbDxChnlK@shredder>

On Tue, Jul 20, 2021 at 05:25:08PM +0300, Ido Schimmel wrote:
> If you don't want to change the order, then at least make the
> replay/cleanup optional and set it to 'false' for mlxsw. This should
> mean that the only change in mlxsw should be adding calls to
> switchdev_bridge_port_offload() / switchdev_bridge_port_unoffload() in
> mlxsw_sp_bridge_port_create() / mlxsw_sp_bridge_port_destroy(),
> respectively.

I mean, I could guard br_{vlan,mdb,fdb}_replay() against NULL notifier
block pointers, and then make mlxsw pass NULL for both the atomic_nb and
blocking_nb.

But why? How do you deal with a host-joined mdb that was auto-installed
while there was no port under the bridge? How does anyone deal with
that? What's optional about it? Why would driver X opt out of it but Y
not (apart for the case where driver X does not offload MDBs at all,
that I can understand).

  reply	other threads:[~2021-07-20 15:39 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-20 13:46 [PATCH v5 net-next 00/10] Let switchdev drivers offload and unoffload bridge ports at their own convenience Vladimir Oltean
2021-07-20 13:46 ` [PATCH v5 net-next 01/10] net: dpaa2-switch: use extack in dpaa2_switch_port_bridge_join Vladimir Oltean
2021-07-20 13:46 ` [PATCH v5 net-next 02/10] net: dpaa2-switch: refactor prechangeupper sanity checks Vladimir Oltean
2021-07-20 13:46 ` [PATCH v5 net-next 03/10] mlxsw: spectrum: " Vladimir Oltean
2021-07-20 13:46 ` [PATCH v5 net-next 04/10] mlxsw: spectrum: refactor leaving an 8021q upper that is a bridge port Vladimir Oltean
2021-07-20 13:46 ` [PATCH v5 net-next 05/10] net: marvell: prestera: refactor prechangeupper sanity checks Vladimir Oltean
2021-07-20 13:46 ` [PATCH v5 net-next 06/10] net: switchdev: guard drivers against multiple obj replays on same bridge port Vladimir Oltean
2021-07-20 13:46 ` [PATCH v5 net-next 07/10] net: bridge: disambiguate offload_fwd_mark Vladimir Oltean
2021-07-20 13:46 ` [PATCH v5 net-next 08/10] net: bridge: switchdev: recycle unused hwdoms Vladimir Oltean
2021-07-20 13:46 ` [PATCH v5 net-next 09/10] net: bridge: switchdev: let drivers inform which bridge ports are offloaded Vladimir Oltean
2021-07-20 13:46 ` [PATCH v5 net-next 10/10] net: bridge: switchdev object replay helpers for everybody Vladimir Oltean
2021-07-20 14:01 ` [PATCH v5 net-next 00/10] Let switchdev drivers offload and unoffload bridge ports at their own convenience Ido Schimmel
2021-07-20 14:12   ` Vladimir Oltean
2021-07-20 14:25     ` Ido Schimmel
2021-07-20 14:46       ` Vladimir Oltean [this message]
2021-07-20 14:51         ` Ido Schimmel
2021-07-20 15:36           ` Vladimir Oltean
2021-07-20 19:47       ` Vladimir Oltean
2021-07-21  6:55         ` Ido Schimmel

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