[yocto] YOCTO kernel PF_CAN feature set and socketCAN layer of the shelf?

[Zoran Stojsavljevic]

Hello Mirza,

Thank you for giving me the hand here... But now (as we speak), I need
to have a short wait for the slipping milestone, before I apply all
this what you have given to me.

All of these are very/extremely useful info, and I'll report (when
time comes) what I got out of it. At least Open Source test info,
which, my best guess, I'll keep open for anybody who has the
same/similar problems/feature sets!

Please, stay tuned!
Zoran Stojsavljevic
_______

On Tue, Jun 12, 2018 at 11:12 AM, Mirza Krak <mirza.krak at gmail.com> wrote:
> On 6 June 2018 at 11:35, Zoran Stojsavljevic
> <zoran.stojsavljevic at gmail.com> wrote:
>> Hello to YOCTO community,
>>
>> I am looking into the new CAN FD (CAN Flexible Data rate) protocol. It
>> is very similar to classical CAN.
>>
>> I am wondering the following (I'll ask very basic questions, just to
>> see if I am on the right tracks):
>> [1] Do YOCTO kernels have CAN drivers left as mandatory drivers in the
>> drivers/ tree (CAN drivers exist on kernel.org kernels)?
>> [2] If YES, are these drivers enabled by default, or I need to enable
>> them? Anybody to quickly refresh me how to manipulate make menuconfig
>> in YOCTO tree?
>
> SocketCAN is very hardware specific and you do not mention which
> hardware you are using.
>
>>
>> I also need the feature called: SocketCAN. The following questions arise:
>> [3] Do we have in the socket I/Fs added PF_CAN protocol family handling?
>>      https://en.wikipedia.org/wiki/SocketCAN
>> [4] Does added SocketCAN layer exist, which covers this topic? It'll
>> be layer on the top of the YOCTO-BSP layer, my best guess. Any
>> examples, using such a layer? Or any Open Source example(s) of such a
>> layer?
>
> I am not aware of any layers and I do not believe that there is any.
> SocketCAN is a Linux kernel feature and there are a set of utils to
> use SocketCAN [1] and there seems to be a recipe for can-utils in
> meta-oe [2] which should be enough to get you started.
>
> [1]. https://github.com/linux-can/can-utils
> [2]. http://layers.openembedded.org/layerindex/recipe/24252/
>
> --
> Med Vänliga Hälsningar / Best Regards
>
> Mirza Krak