netdev - Re: Optics (SFP) monitoring on ixgbe and igbe

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Message-ID: <CAPN4dA95RQ+xyvY+qo0CDc=KmaKhuqHATx_KyMjppvauYtUyzQ@mail.gmail.com>
Date:	Thu, 8 Nov 2012 01:39:52 +0100
From:	Aurélien <footplus@...il.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	netdev@...r.kernel.org
Subject: Re: Optics (SFP) monitoring on ixgbe and igbe

On Wed, Nov 7, 2012 at 8:58 PM, Ben Hutchings <bhutchings@...arflare.com> wrote:
> On Wed, 2012-11-07 at 13:27 +0100, Aurélien wrote:
>
> We just added the ETHTOOL_GMODULEINFO and ETHTOOL_GMODULEEEPROM
> interface for this purpose.  The diagnostics obviously aren't really an
> EEPROM but I don't think that matters.
>
> These drivers should report a type of ETH_MODULE_SFF_8472 (assuming a
> module is present) and expose an 'EEPROM' with the real EEPROM in the
> first 256 bytes and the diagnostic registers in the next 256 bytes.
>
> Decoding of the diagnostic registers can be done in ethtool itself.
>

Hi Ben,

Thanks for this reply.

I did not see these interfaces in my searches, but from what I gather
from the code, the missing part is the actual decoding of the data in
ethtool.

As soon as I get my card installed in a test server, I'll reboot on a
kernel issued from the davem/net-next master, and will do some tests
to see if ethtool correctly sees an SFF-8472 compliant module, and has
the correct diagnostic data after the eeprom.

Then I will port the decoding part from the kernel-side patches I to
code in ethtool, and will do some basic tests.

Thanks,
Best regards,
-- 
Aurélien Guillaume
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