On Tue, Apr 6, 2010 at 12:23 PM, Oliver Hartkopp <[email protected]>wrote:
> Lei Luo wrote: > > >>> I am a newbie of socketcan, I compiled and installed it in the > > direction of http://dave.limoilux.org/trac/wiki/UseSocketCAN There are > > two mcp2510 can controllers in my arm at91rm9200 board. > >>> It failed when run "can_setup start", saying that "cannot creat > > /sys/class/net/can0". > >> > >> If you look in SocketCAN's makefile, did you uncomment export > > CONFIG_CAN_MCP251X=m? > >> You will also need to uncomment export CONFIG_CAN_DEV_SYSFS=y which is > > legacy. > > Yep! > > > > > Yes, I have done it. I used the newest source code from the svn server > > and patched it manually. Configration is as follows: > > CONFIG_CAN=y; > > CONFIG_CAN_RAW=y; > > CONFIG_CAN_BCM=y; > > CONFIG_CAN_GW=y; > > CONFIG_CAN_ISOTP=y; > > > > CONFIG_CAN_VCAN=y; > > CONFIG_CAN_DEV=y; > > CONFIG_CAN_CALC_BITTIMING=y; > > CONFIG_CAN_MCP251X=y; > > > >> > >>> > >>> Then I use "ip link add type vcan" to create the a vcan interface. > > But cmd "add" is not recognised, ip tool is the newest one which is > > compiled with iproute2-2.6.33.tar.bz2. Linux kernel I used is 2.6.28. > > Is vcan.ko loaded? Please try > > modprobe vcan > > before invoking > > ip link add type vcan > > There should be this startup message in the kernel log: > "vcan: Virtual CAN interface driver" > > You can see all network interfaces with > > cat /proc/net/dev > > or > > ip link show > > > > > > The problem of "ip link add" is OK after recompiling kernel, > > /sys/class/net/can0 is created if I type in "ip link add dev can0 type > > vcan". But it says "cannot create /sys/class/net/can0" whenever I did it > > or not. > > As said above the sysfs configuration interface is depricated. > > For that reason the "can_setup" script is also not usable here. > I juste updated the wiki with can_setup: http://dave.limoilux.org/trac/wiki/UseSocketCAN#can_setup <http://dave.limoilux.org/trac/wiki/UseSocketCAN#can_setup>and can_setup_deprecated: http://dave.limoilux.org/trac/wiki/UseSocketCAN#can_setup_deprecated I hope it will help
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