Re: Can support at Linux LXC?

[Oliver Hartkopp <socketcan@hartkopp.net>]

Hi Dererk,

On 11/20/2015 10:46 PM, Dererk wrote:

> I'm playing with some bus CANs and linux LXC. But it seems that there
> must be some kind of support missing on the LXC side.
> Even vcan seems to have the very same results on it when trying to open
> the socket:
> 
> socket(PF_CAN, SOCK_RAW, 1)             = -1 EAFNOSUPPORT (Address
> family not supported by protocol)
> 
> Have you have any experience with this?

Looks like CONFIG_CAN and other CAN specific components are not enabled in
your kernel.

Debian kernels usually have this enabled:

$ grep CONFIG_CAN /boot/config-3.16.0-4-amd64
CONFIG_CAN=m
CONFIG_CAN_RAW=m
CONFIG_CAN_BCM=m
CONFIG_CAN_GW=m
CONFIG_CAN_VCAN=m
CONFIG_CAN_SLCAN=m
CONFIG_CAN_DEV=m
CONFIG_CAN_CALC_BITTIMING=y
# CONFIG_CAN_LEDS is not set
CONFIG_CAN_SJA1000=m
CONFIG_CAN_SJA1000_ISA=m
# CONFIG_CAN_SJA1000_PLATFORM is not set
CONFIG_CAN_EMS_PCMCIA=m
CONFIG_CAN_EMS_PCI=m
CONFIG_CAN_PEAK_PCMCIA=m
CONFIG_CAN_PEAK_PCI=m
CONFIG_CAN_PEAK_PCIEC=y
CONFIG_CAN_KVASER_PCI=m
CONFIG_CAN_PLX_PCI=m
# CONFIG_CAN_C_CAN is not set
# CONFIG_CAN_CC770 is not set
# CONFIG_CAN_MCP251X is not set
CONFIG_CAN_EMS_USB=m
CONFIG_CAN_ESD_USB2=m
CONFIG_CAN_GS_USB=m
CONFIG_CAN_KVASER_USB=m
CONFIG_CAN_PEAK_USB=m
CONFIG_CAN_8DEV_USB=m
CONFIG_CAN_SOFTING=m
CONFIG_CAN_SOFTING_CS=m
# CONFIG_CAN_DEBUG_DEVICES is not set


> Is there a proper place where I could route this doubts at an
> specialized mailing list on the linux kernel that you know might be more
> appropiate?

You are definitely at the right place for CAN related questions here :-)

Best regards,
Oliver