Re: [PATCH net-next 6/6] netdevsim: Add simple FIB resource controller via devlink

[Jiri Pirko <jiri@resnulli.us>]

Thu, Apr 05, 2018 at 11:06:41PM CEST, dsa@cumulusnetworks.com wrote:
>On 4/5/18 2:10 PM, David Ahern wrote:
>> 
>> The ASIC here is the kernel tables in a namespace. It does not make
>> sense to have 2 devlink instances for a single namespace.
>
>I put this example controller in netdevsim per a suggestion from Ido.
>The netdevsim seemed like a good idea given that modules intention --
>testing network facilities. Perhaps I should have done this as a
>completely standalone module ...
>
>The intention is to treat the kernel's tables *per namespace* as a
>standalone entity that can be managed very similar to ASIC resources.

So you say you want to treat a namespace as an ASIC? That sounds very
odd to me :/


>Given that I can add a resource controller module
>(drivers/net/kern_res_mgr.c?) that creates a 'struct device' per network
>namespace with a devlink instance. In this case the device would very
>much be tied to the namespace 1:1.

That sounds more reasonable and accurate, yet still odd. You would not
have any netdevices there? Any ports?