netdev - Re: [patch net-next RFC 0/4] introduce infrastructure for support of switch chip datapath

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Message-ID: <53349F5C.8090205@mojatatu.com>
Date:	Thu, 27 Mar 2014 17:59:56 -0400
From:	Jamal Hadi Salim <jhs@...atatu.com>
To:	Florian Fainelli <f.fainelli@...il.com>
CC:	Sergey Ryazanov <ryazanov.s.a@...il.com>,
	Jiri Pirko <jiri@...nulli.us>,
	Roopa Prabhu <roopa@...ulusnetworks.com>,
	Neil Horman <nhorman@...driver.com>,
	Thomas Graf <tgraf@...g.ch>, netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Andy Gospodarek <andy@...yhouse.net>,
	dborkman <dborkman@...hat.com>, ogerlitz <ogerlitz@...lanox.com>,
	jesse <jesse@...ira.com>, pshelar <pshelar@...ira.com>,
	azhou <azhou@...ira.com>, Ben Hutchings <ben@...adent.org.uk>,
	Stephen Hemminger <stephen@...workplumber.org>,
	jeffrey.t.kirsher@...el.com, vyasevic <vyasevic@...hat.com>,
	Cong Wang <xiyou.wangcong@...il.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Scott Feldman <sfeldma@...ulusnetworks.com>,
	Lennert Buytenhek <buytenh@...tstofly.org>,
	Shrijeet Mukherjee <shm@...ulusnetworks.com>,
	Felix Fietkau <nbd@...nwrt.org>
Subject: Re: [patch net-next RFC 0/4] introduce infrastructure for support
 of switch chip datapath

On 03/27/14 17:54, Florian Fainelli wrote:
> 2014-03-27 14:47 GMT-07:00 Jamal Hadi Salim <jhs@...atatu.com>:

> I think it is. There is nothing in-tree that actually uses that
> feature (switch chaining), but all the infrastructure is there to:
>
> - represent links between switches, which one is cascaded from which
> one and get a sense of their addressing within the switch tree
> - a function call to get that cascading table to programmed to each switch
> - get all relevant "uplink/downlink" switch ports to be configured appropriately
>

Sounds like we have a winner on this aspect at least.
Is it a common setup to have such cascading though - or is this some
overzelous way of solving cascading switches within a LAN?

cheers,
jamal
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