linux-kernel - Re: [PATCH 3/3] dm9601: add support ethtool style utility

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Message-ID: <1457696533.3001.88.camel@decadent.org.uk>
Date:	Fri, 11 Mar 2016 11:42:13 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Joseph Chang <joseph_chang@...icom.com.tw>,
	'Joseph CHANG' <josright123@...il.com>,
	'Peter Korsgaard' <jacmet@...site.dk>, netdev@...r.kernel.org,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] dm9601: add support ethtool style utility

On Fri, 2016-03-11 at 11:33 +0000, Ben Hutchings wrote:
> On Fri, 2016-03-11 at 19:08 +0800, Joseph Chang wrote:
> > 
> > I tested by
> >  ./ethtool -E eth0 magic 0x9620 offset 0 length 3 value 0xf1 value 0xf2 value 0xf3
> > 
> > I think ethtool need [ value N ] for each byte (so need three "value xx" in above command line), 
> > am I right?
> > 
> > Oh, I can see it goes wrong~ Thanks~
> [...]
> 
> You can only pass one byte on the command line and that forces the
> length to be 1.  To set multiple bytes, you need to provide them on
> stdin instead.

...as raw binary data, not hexadecimal strings.

Ben.

-- 
Ben Hutchings
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