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

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Message-ID: <53326A17.5030406@cumulusnetworks.com>
Date:	Tue, 25 Mar 2014 22:48:07 -0700
From:	Roopa Prabhu <roopa@...ulusnetworks.com>
To:	Jamal Hadi Salim <jhs@...atatu.com>
CC:	tgraf <tgraf@...g.ch>, Florian Fainelli <f.fainelli@...il.com>,
	Neil Horman <nhorman@...driver.com>,
	Jiri Pirko <jiri@...nulli.us>, netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>, andy <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>,
	Felix Fietkau <nbd@...nwrt.org>,
	Shrijeet Mukherjee <shm@...ulusnetworks.com>
Subject: Re: [patch net-next RFC 0/4] introduce infrastructure for support
 of switch chip datapath

On 3/25/14, 3:08 PM, Jamal Hadi Salim wrote:
> On 03/25/14 17:39, tgraf wrote:
>> On 03/25/14 at 01:00pm, Florian Fainelli wrote:
>
>>
>> I think all it takes is to correctly apply the existing separation
>> which is already available but not applied right now.
>>
>> We already have the L2/L3 separation in place:
>>
>> net_device vs in_device/inet6_dev/....
>>
>> A pure L2 device that will never do L3 on the CPU would only
>> need to set a flag which we check before allocating a in_device
>> and therefore prevent from all the L3 configs to be exposed.
>
>
> I think we need much deeper discussion on the topic of other
> functions that may not be directly connected to netdevs
> (v4/6 forwarding, ACL, etc).

Agreed.  Some of our generic switch api challenges have been in these areas.

thanks,
Roopa
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