netdev - Re: Bridge port isolation offload

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Message-ID: <b9a61559-e7f7-86e9-6ac2-c988255db5f0@gmail.com>
Date:   Tue, 10 Aug 2021 02:43:46 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     DENG Qingfang <dqfext@...il.com>, Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <nikolay@...dia.com>,
        David Miller <davem@...emloft.net>,
        Andrew Lunn <andrew@...n.ch>, Jakub Kicinski <kuba@...nel.org>,
        bridge@...ts.linux-foundation.org, netdev <netdev@...r.kernel.org>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>
Subject: Re: Bridge port isolation offload



On 8/9/2021 9:40 PM, DENG Qingfang wrote:
> Hi,
> 
> Bridge port isolation flag (BR_ISOLATED) was added in commit
> 7d850abd5f4e. But switchdev does not offload it currently.
> It should be easy to implement in drivers, just like bridge offload
> but prevent isolated ports to communicate with each other.
> 
> Your thoughts?

It maps well on Broadcom switches but there was not a known use case 
AFAICT that warranted mapping this flag to program the switch hardware 
accordingly.
-- 
Florian