Re: [canxl v6 05/17] can: netlink: add initial CAN XL support

[Rakuram Eswaran <rakuram.e96@gmail.com>]

On Mon, 24 Nov 2025 at 00:28, Oliver Hartkopp <socketcan@hartkopp.net> wrote:
>
> Hello Rakuram,
>
> some hints how to create a test setup for the CAN XL patches:
>
> You need to build your own CAN XL enabled "ip" tool from the iproute2
> package. This new code can be found in Vincents iproute2-next tree:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/mailhol/iproute2-next.git/
>
> You need to check out the canxl-netlink branch there:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/mailhol/iproute2-next.git/log/?h=canxl-netlink
>
> Once you've built that branch
>
> ./ip link set can0 type can help
>
> shows the new XL specific options.
>
> Of course you need the "can0" interface first:
>
> Load the dummy CAN driver:
>
> # modprobe dummy_can
>
> Enable the debugging to see the output in dmesg :
>
> # echo 'file drivers/net/can/dummy_can.c +p' >
> /sys/kernel/debug/dynamic_debug/control
>
> Then you can e.g. enable the CC/FD/XL mixed-mode without transceiver
> mode switching (TMS):
>
> # ./ip link set can0 type can bitrate 1000000 dbitrate 2000000 fd on
> xbitrate 4000000 xl on
>
> Or e.g. use the CANXL-only mode with TMS enabled:
>
> # ./ip link set can0 type can bitrate 1000000 xbitrate 12308000 xl on
> tms on fd off
>
> After setting the interface to 'up' with
>
> ./ip link set can0 up
>

Thank you for sharing the test steps. I'm going to look into this today.
Going to test using QEMU VM (I hope that works without any issues). 

Best Regards,
Rakuram