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: <20200110.112736.1849382588448237535.davem@davemloft.net>
Date:   Fri, 10 Jan 2020 11:27:36 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     nikolay@...ulusnetworks.com
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)

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?