netdev - RE: ethtool enhancement proposal

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Message-ID: <A6AA2EF896BED345B0F23520D832A4B105855E@SJEXCHMB05.corp.ad.broadcom.com>
Date:	Wed, 18 Apr 2012 17:20:30 +0000
From:	"Yaniv Rosner" <yaniv.rosner@...adcom.com>
To:	"Stuart Hodgson" <smhodgson@...arflare.com>
cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Ben Hutchings" <bhutchings@...arflare.com>
Subject: RE: ethtool enhancement proposal


> On Wed, 2012-04-18 at 13:05 +0000, Yaniv Rosner wrote:
> > Hi Ben,
> > I want to propose new enhancement for the ethtool to display the
> > content of attached SFP+ module.
> > The format should be similar to the "-e" option, and optionally parse
> > it's content based on SFF-8472.
> > Please let me know what you think.
> 
> Stuart Hodgson is working on something like this, though parsing is
> unconditional.  I thought he had already posted a patch to netdev, but I
> can't see it in the archive.
> 
Stuart,
Do you have an ETA for this feature ?

Yaniv

> We discussed the different module formats and came to the conclusion
> that:
> 
> - Most module types in current use have a 256-byte EEPROM, format
>   defined in SFF-8079.
> - SFF-8472 specifies two 256-byte EEPROMs/register files, the first
>   identical to SFF-8079 and the second carrying diagnostic information.
> - The ETHTOOL_GMODULE{EEPROM,INFO} commands should effectively
>   concatenate the two.
> 
> The current Solarflare controller firmware only provides access to the
> SFF-8079 EEPROM on SFP+ modules, so Stuart's code does not cover the
> additional diagnostic information.  But that should be easy to add on
> top.
> 
> Ben.
> 
> --
> Ben Hutchings, Staff Engineer, Solarflare
> Not speaking for my employer; that's the marketing department's job.
> They asked us to note that Solarflare product names are trademarked.
>