Re: Setting bitrate from user-space application

[Guillaume Picquet <guillaume@picquet.fr>]

Hi all!

A status update, thanks to libsocketcan I am able to get and set bitrate.
remarks:
Before setting bitrate a stop must be performed.
I use poll() on CAN socket and it returns and set errno to ENETDOWN 
during the stop but sockets stay valid. (no need to close and reopen).
I Suppose it is normal behaviour, right ?

Thanks for support.

Regards.

Le 25/11/2015 17:17, Guillaume Picquet a écrit :
>
>
> Le 25/11/2015 17:04, Oliver Hartkopp a écrit :
>> Hi Guillaume,
>>
>> On 11/25/2015 03:58 PM, Marc Kleine-Budde wrote:
>>> On 11/25/2015 03:02 PM, Guillaume Picquet wrote:
>>>> Hi all,
>>>>
>>>> I prefer to ask first to those who know.
>>>>
>>>> What is the 'normal' way of setting CAN bitrate from user-space
>>>> application ?
>>>> Is there a library for that ?
>>> Yes -
>>> http://www.pengutronix.de/software/libsocketcan/download/libsocketcan-0.0.10.tar.bz2 
>>>
>>>
>>>> If no shall I use netlink ?
>>> No - netlink parsing makes your brain hurt :D
>>>
>> Using libsocketcan is the way to control the interfaces by an 
>> application
>> (which internally uses netlink).
> I've downloaded it, cross-compile it and made a test program.
> I read bitrate successfully.
>
>>
>> The usual way to configure the interfaces system wide is the 'ip' 
>> tool from
>> the iproute2 package which comes with your preferred Linux distribution.
> On the platform I'am working it's done in a rc script at start-up
>>
>> The way to configure CAN interfaces with 'ip' is described here:
>>
>> https://www.kernel.org/doc/Documentation/networking/can.txt (see 
>> chapter 6.5)
>>
>> E.g. you can use this script in Debian/Ubuntu setups then:
>>
>> https://github.com/linux-can/can-misc/blob/master/etc/can_if
>>
>> Regards,
>> Oliver
> Regards,
>
> guillaume
> -- 
> To unsubscribe from this list: send the line "unsubscribe linux-can" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html