linux-kernel - Re: [RFC net-next Patch 0/3] net: bridge: mrp: Add support for Media Redundancy Protocol(MRP)

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Message-ID: <3CD4F75F-C462-4CF2-B31A-C2E023D3F065@cumulusnetworks.com>
Date:   Fri, 10 Jan 2020 22:03:37 +0200
From:   nikolay@...ulusnetworks.com
To:     David Miller <davem@...emloft.net>
CC:     horatiu.vultur@...rochip.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, bridge@...ts.linux-foundation.org,
        roopa@...ulusnetworks.com, jakub.kicinski@...ronome.com,
        vivien.didelot@...il.com, andrew@...n.ch,
        jeffrey.t.kirsher@...el.com, olteanv@...il.com,
        anirudh.venkataramanan@...el.com, dsahern@...il.com,
        jiri@...lanox.com, UNGLinuxDriver@...rochip.com
Subject: Re: [RFC net-next Patch 0/3] net: bridge: mrp: Add support for Media Redundancy Protocol(MRP)

On 10 January 2020 21:27:36 EET, David Miller <davem@...emloft.net> wrote:
>From: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
>Date: Fri, 10 Jan 2020 16:13:36 +0200
>
>> I agree with Stephen here, IMO you have to take note of how STP has
>progressed
>> and that bringing it in the kernel was a mistake, these days mstpd
>has an active
>> community and much better support which is being extended. This looks
>best implemented
>> in user-space in my opinion with minimal kernel changes to support
>it. You could simply
>> open a packet socket with a filter and work through that, you don't
>need new netlink
>> sockets. I'm not familiar with the protocol so can't really be the
>judge of that, if
>> you present a good argument for needing a new netlink socket for
>these packets - then
>> sure, ok.
>
>With a userland implementation, what approach do you suggest for
>DSA/switchdev offload
>of this stuff?

Good question, there was no mention of that initially, or I missed it at least. 
There aren't many details about what/how will be offloaded right now.
We need more information about what will be offloaded and how it will fit. 



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