netdev - Re: [net-next PATCH v3 00/12] Flow API

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Message-ID: <20150122154840.GC1863@nanopsycho.orion>
Date:	Thu, 22 Jan 2015 16:48:40 +0100
From:	Jiri Pirko <jiri@...nulli.us>
To:	Thomas Graf <tgraf@...g.ch>
Cc:	Jamal Hadi Salim <jhs@...atatu.com>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	John Fastabend <john.fastabend@...il.com>,
	simon.horman@...ronome.com, sfeldma@...il.com,
	netdev@...r.kernel.org, davem@...emloft.net, gerlitz.or@...il.com,
	andy@...yhouse.net, ast@...mgrid.com
Subject: Re: [net-next PATCH v3 00/12] Flow API

Thu, Jan 22, 2015 at 04:37:27PM CET, tgraf@...g.ch wrote:
>On 01/22/15 at 10:28am, Jamal Hadi Salim wrote:
>> On 01/22/15 10:13, Thomas Graf wrote:
>> 
>> >I don't follow this. John's proposal allows to decide on a case by
>> >case basis what we want to export. Just like with ethtool or
>> >RTNETLINK. There is no direct access to hardware. A user can only
>> >configure what is being exposed by the kernel.
>> >
>> 
>> So if i am a vendor with my own driver, I can expose whatever i want.
>
>No. We will reject any driver change attempting to do so on this
>list.

That is not 100%, on contrary. If the infrastructure would be made to
explicitly disallow that kind of behaviour, it would be much safer.


>
>This is the whole point of this: Coming up with a model that allows
>to describe capabilities and offer flow programming capabilities
>in a Vendor neutral way. A "push_vlan" or "pop_vlan" action will work
>with any driver that supports it.
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