netdev - Re: [PATCH net-next RFC v2] switchdev: bridge: drop hardware forwarded packets

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Message-ID: <20150320220454.GA31769@lunn.ch>
Date:	Fri, 20 Mar 2015 23:04:54 +0100
From:	Andrew Lunn <andrew@...n.ch>
To:	John Fastabend <john.fastabend@...il.com>
Cc:	roopa <roopa@...ulusnetworks.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	davem@...emloft.net, sfeldma@...il.com, jiri@...nulli.us,
	ronen.arad@...el.com, netdev@...r.kernel.org,
	Wilson Kok <wkok@...ulusnetworks.com>,
	Stephen Hemminger <stephen@...workplumber.org>
Subject: Re: [PATCH net-next RFC v2] switchdev: bridge: drop hardware
 forwarded packets

> >  In-kernel bridge driver is proven very useful for us to run stp,
> >or recently igmp reports (dont know the details here) etc in software.
> >I wonder how you handle these. If you don't use the in-kernel bridge
> >driver, I suspect you down the lane you will end-up having to duplicate a
> >lot of things that bridge driver already does in your switch driver.
> 
> I think that code is in need of some serious love before it is usable. I
> actually don't know who is using STP anymore if anyone.

We are using STP for the DSA switches. It is a good minimum to start
with, for these little switches with only a small number of ports, and
use in home WiFi routers etc.

    Andrew
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