Re: FreeBSD-native CAN Stack and AF_CAN Protocol Family

On Fri, Jun 20, 2025, 14:52 Jérémie JOURDIN <jeremie.jourdin@advens.fr>
wrote:

> Hello all,
>
> I am working on a system (15-current) that requires interaction with a CAN
> network.
>
> So far, I have developped a driver for my controller, able to send and
> receive CAN frames to and from connected devices.
>
> I’d like to implement a FreeBSD-native CAN network stack that
> is API-compatible with Linux’s Netlink CAN (netcan).
>
> This would allow us to recompile and use existing Linux userland tools
> with minimal changes.
>
> If you believe this development could benefit the community, I would be
> happy to submit a set of patches (driver + netcan support).
>
> We’re considering defining a new Protocol Family, AF_CAN, for this purpose.
>
> Would it be acceptable to use the first available « AF_VENDORXX » from
> sys/socket.h ?
>
> I would appreciate your thoughts, advice, and any recommendations you may
> have on this matter.
>
> -- Jérémie
>

Hello Jeremie, sounds great! :-) Would that work with simple USB-UART-CAN
adapters? :-)


--
CeDeROM, SQ7MHZ, http://www.tomek.cedro.info

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