Re: Kvazer USB CAN driver

[Oliver Hartkopp <socketcan@hartkopp.net>]

Hello Pierre,

I moved your question to the new linux-can mailing list you should use in future.

On 07.01.2014 15:17, GARNERO, PIERRE (P.) wrote:

> 
> I would like to use a KVAZER USBcan Rugged device with the socketcan library.
> 
> I use Raspbian OS and I have built a kernel with anything enabled regarding CAN.
> 
>  
> 
> I have loaded the following modules:
> 
> # modprobe can
> 
> # modprobe vcan
> 
> # modprobe can-raw
> 
> # modprobe can-dev
> 
> # modprobe kvazer-usb
> 
>  
> 
> But any ip link command (ex: ip link add dev can0 type can) failed with
> “RTNETLINK answer : operation not permitted” (excepted for vcan which works well).

When your modprobe succeeded (and the USB adapter is attached) a can0
interface should have been created by the kvaser-usb driver automatically.

The "ip link add dev can0 type can" is wrong.
You may add virtual CAN devices with this procedure, e.g.
ip link add dev vcan0 type vcan

But you can never create a real CAN interface with the ip tool.

> 
> Could someone provide me some hints regarding the steps to have a Kvaser
> USBcan device up and running using the net driver ?
> 

Once can0 showed up:

e.g. with dmesg | grep can0

or in 

cat /proc/net/dev

You can set the bitrate and set the interface to up afterwards:

http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/Documentation/networking/can.txt?h=linux-3.12.y#n758

Regards,
Oliver