netdev - Re: [PATCH 5/7] CAN: Add virtual CAN netdevice driver

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Date:	Tue, 02 Oct 2007 23:02:53 +0200
From:	Oliver Hartkopp <oliver@...tkopp.net>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
CC:	Urs Thuermann <urs@...ogud.escape.de>, netdev@...r.kernel.org,
	David Miller <davem@...emloft.net>,
	Patrick McHardy <kaber@...sh.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Oliver Hartkopp <oliver@...tkopp.net>,
	Oliver Hartkopp <oliver.hartkopp@...kswagen.de>,
	Urs Thuermann <urs.thuermann@...kswagen.de>
Subject: Re: [PATCH 5/7] CAN: Add virtual CAN netdevice driver

Arnaldo Carvalho de Melo wrote:
> Em Tue, Oct 02, 2007 at 03:10:11PM +0200, Urs Thuermann escreveu:
>   
>> +
>> +#ifdef CONFIG_CAN_DEBUG_DEVICES
>> +static int debug;
>> +module_param(debug, int, S_IRUGO);
>> +#endif
>>     
>
> Can debug be a boolean? Like its counterpart on DCCP:
>
> net/dccp/proto.c:
>
> module_param(dccp_debug, bool, 0444);
>   

'debug' should remain an integer to be able to specifiy debug-levels or 
bit-fields for different Debug outputs.

> Where we also use a namespace prefix, for those of us who use ctags or
> cscope.
>   

Even if i don't have any general objections to rename this 'debug' to 
'vcan_debug', it looks like an 'overnamed' module parameter for me. Is 
this a genereal naming scheme recommendation for debug module_params?

>
>> +/*
>> + * CAN test feature:
>> + * Enable the echo on driver level for testing the CAN core echo modes.
>> + * See Documentation/networking/can.txt for details.
>> + */
>> +
>> +static int echo; /* echo testing. Default: 0 (Off) */
>> +module_param(echo, int, S_IRUGO);
>> +MODULE_PARM_DESC(echo, "Echo sent frames (for testing). Default: 0 (Off)");
>>     
>
> echo also seems to be a boolean
>
>   

Yes. This is definitely a boolean candidate. We'll change that.

Thanks,
Oliver

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