netdev - Re: invalid requirement from ethtool?

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Message-Id: <20110728.003758.292509567308751079.davem@davemloft.net>
Date:	Thu, 28 Jul 2011 00:37:58 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eli@....mellanox.co.il
Cc:	netdev@...r.kernel.org
Subject: Re: invalid requirement from ethtool?

From: Eli Cohen <eli@....mellanox.co.il>
Date: Thu, 28 Jul 2011 10:23:26 +0300

> On Wed, Jul 27, 2011 at 10:43:09PM -0700, David Miller wrote:
>> From: Eli Cohen <eli@....mellanox.co.il>
>> Date: Tue, 26 Jul 2011 15:42:22 +0300
>> 
>> > I think both params zero should be allowed and mean coalescing is not
>> > operational, thus we can remove these comments from ethtool.h
>> 
>> The existing precendence has existed for more than 10 years.  You can't
>> just change it like this.
>> 
>> You'll need to find a new way to encode "disabled" coalescing.
> 
> I can't see the text explicitly specifies how to "disable" coalescing.
> If I ignore the specific comment that disallows both params 0, I could
> interpret the text such that when they're both zero, the feature is
> disabled.

The documentation does not determine what the rules are, the cpu
does not execute the documentation it executes the code, and that's
what determines the rules.
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