SocketCAN FD support : "RTNETLINK answers: Operation not supported"

[mitchdetailed]

I'm working through testing out the FD settings. Can't seem to get the FD mode to return anything other than, "RTNETLINK answers: Operation not supported"

[xia0long]

@mitchdetailed Same issue. Have you found a solution? I can set up "normal CAN" successfully, but something went wrong when I set up CAN FD. I tried this in Ubuntu20.

~ ➤ sudo ip link set can0 down
~ ➤ sudo ip link set can0 up type can bitrate 500000
~ ➤ candump can0
  can0  123   [2]  12 34
^C%
~ ➤ sudo ip link set can0 down
~ ➤ sudo ip link set can0 up type can bitrate 500000 dbitrate 8000000 restart-ms 1000 berr-reporting on fd on

RTnetlink answers operation not supported

[mitchdetailed]

no solution found here. hopefully Eric will bring insight as to why.

[xia0long]

Hi @mitchdetailed, Eric told me that the driver cantact-pro used not support CAN FD yet, he made a patched driver.
I have installed this driver in my Ubuntu20, but the problem still exists. Anyway, you can try it.

gs_usb_fd ➤ lsmod | grep can                                                                                                                                             
can_dev                32768  2 gs_usb_fd,gs_usb
gs_usb_fd ➤ sudo ip link set can0 up type can bitrate 500000 dbitrate 8000000 restart-ms 1000 berr-reporting on fd on                                                    
RTNETLINK answers: Operation not supported

[mitchdetailed]

sudo apt install kernel-headers-$(uname -r) returns : E: Unable to locate package kernel-headers-5.4.0-72-generic E: Couldn't find any package by glob 'kernel-headers-5.4.0-72-generic' googling yeilds no legitimate results. interested in input

…

On Mon, Mar 29, 2021 at 2:59 AM azreborn ***@***.***> wrote: Hi @mitchdetailed <https://github.com/mitchdetailed>, Eric told me that the driver cantact-pro used not support CAN FD yet, he made a patched driver <https://github.com/linklayer/gs_usb_fd>. I have installed this driver in my Ubuntu20, but the problem still exists. Anyway, you can try it. gs_usb_fd ➤ lsmod | grep can can_dev 32768 2 gs_usb_fd,gs_usb gs_usb_fd ➤ sudo ip link set can0 up type can bitrate 500000 dbitrate 8000000 restart-ms 1000 berr-reporting on fd on RTNETLINK answers: Operation not supported — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AI62NLUELZ467L7CITZAW43TGAXNDANCNFSM4YYU35OA> .

-- Mitch Minton 615-977-9787 Bridgestone - USW1055

[mitchdetailed]

i was able to install the kernel object on my machine (linux mint ) by doing the following:
~$ sudo apt-get install linux-source
~$ git clone https://github.com/linklayer/gs_usb_fd.git
~$ cd gs_usb_fd/
~$ sudo make
~$ sudo insmod gs_usb_fd.ko
but when i attempt to run a fd bitrate, i still receive a "RTNETLINK answers: Operation not supported" value returned

[marckleinebudde]

Hey @mitchdetailed

The CANtact Pro doesn't support changing of bit error reporting (berr-reporting on), this is why your command fails. Try:

sudo ip link set can0 up type can bitrate 500000 dbitrate 8000000 restart-ms 1000 fd on