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

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Date:	Thu, 15 Nov 2012 23:30:05 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	<footplus@...il.com>
CC:	<netdev@...r.kernel.org>, <jeffrey.t.kirsher@...el.com>
Subject: Re: Optics (SFP) monitoring on ixgbe and igbe

On Thu, 2012-11-15 at 14:46 -0800, Jeff Kirsher wrote:
> On 11/15/2012 01:36 PM, Aurélien wrote:
> >> On Fri, Nov 9, 2012 at 4:08 PM, Ben Hutchings <bhutchings@...arflare.com> wrote:
> >>> No, the driver also needs to implement ethtool_ops::get_module_info and
> >>> ethtool_ops::get_module_eeprom.  But those should be quite easy to do.
> >>>
> > Hi !
> >
> > I started to implement these operations in ixgbe.
> >
> > So far, the result is the attached patch, which applies on dave-m's
> > net-next @ 1ff05fb7114a6b4118e0f7d89fed2659f7131b0a. It's not yet
> > finished, and since it is my first peek at network drivers I need some
> > advice on:
> >
> > - whether the implementation seems correct for ixgbe and all its
> > supported MAC/PHY combinations ?
> > - what would be the best way to manage SFF-8472 A0/A2 bank swapping
> > mechanism for reading A2h ? (it seems I need to lock the whole -
> > adress change sequence - read A2h - address change again - operation)
> > in case it's needed. I may not be able to test that, so I may add an
> > unsupported return code for now.
> > - Is the supported PHY selection correct, or should other PHYs be
> > supported ? What should be the rule ?
> >
> > I have been able to get correct temperature readings with a patched-up
> > ethtool, so it seems to work correctly on at least my card (Ethernet
> > controller [0200]: Intel Corporation 82599EB 10-Gigabit Network
> > Connection [8086:10fb] (rev 01)).
> >
> > About ethtool, I was thinking about making a -O option for optical
> > diagnostics, which would have a readable output. I will make a
> > function to parse the A2 register contents, so it can be reused in
> > other daemons/libs (SNMP, etc).
> >
> > Thanks,
> > Best regards,
> Can you please add me <jeffrey.t.kirsher@...el.com> to the CC on future
> patches for ixgbe or ixgb, as I will be the one applying the patch to my
> queue?

Yes, Jeff's the one you should be talking to about these drivers.  I
just look after the ethtool utility and API.

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.

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