netdev - Re: [PATCH net-next] ethtool: Added a field fw dump

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Message-ID: <CB88FD74.2A201%anirban.chakraborty@qlogic.com>
Date:	Fri, 16 Mar 2012 14:28:03 -0700
From:	Anirban Chakraborty <anirban.chakraborty@...gic.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	Ben Hutchings <bhutchings@...arflare.com>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Dept-NX Linux NIC Driver 
	<Dept_NX_Linux_NIC_Driver@...gic.com>,
	Manish Chopra <manish.chopra@...gic.com>
Subject: Re: [PATCH net-next] ethtool: Added a field fw dump_state



On 3/16/12 2:22 PM, "Eric Dumazet" <eric.dumazet@...il.com> wrote:

>On Fri, 2012-03-16 at 14:10 -0700, Anirban Chakraborty wrote:
>> 
>> On 3/16/12 11:27 AM, "Ben Hutchings" <bhutchings@...arflare.com> wrote:
>> 
>> >On Fri, 2012-03-16 at 10:58 -0700, Anirban Chakraborty wrote:
>> >> +
>> >>  struct ethtool_dump {
>> >>  	__u32	cmd;
>> >>  	__u32	version;
>> >>  	__u32	flag;
>> >>  	__u32	len;
>> >>  	__u8	data[0];
>> >> +	__u8	dump_state;
>> >
>> >Don't be ridiculous.
>> 
>> Yeah I know, especially when there is a flag field already present
>>there.
>> The only
>> reason, we considered for adding it is to keep the backward
>>compatibility
>> of scripts.
>> Right now, the flag field sets/gets the dump level of fw. If we use it
>>to
>> control the
>> dump state, then it would break the existing scripts, if there are any.
>> 
>
>You missed the point... data[0] must be the last element in the
>structure.
Yes, that was wrong struct. Sorry, I should have caught it earlier. We'll
resend it.

-Anirban


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