Re: ixg and SFPs in NetBSD 10_RC1

[Hisashi T Fujinaka <htodd%twofifty.com@localhost>]

On Mon, 27 Nov 2023, Lloyd Parkes wrote:

> On Sun, 2023-11-26 at 21:35 +0000, David Brownlee wrote:
> > Would it be worth test booting a FreeBSD or Linux image to see if
> > they
> > work under that (to confirm if it's a driver issue)?
>
>
> That's an idea. And Debian 12 also reports the DAC as an unsupported
> SFP.
>
> My working hypothesis is that since the Intel cards support 10GE and
> 1GE, the driver cares more about how the SFP describes itself. I'm
> pretty sure my Emulex and Mellanox cards only do 10GE and so the Linux
> drivers for those cards can afford to YOLO a bit more than the ixg
> driver.

Oh boy. I used to support these (well, x520, x550, mostly) in my day
job. SFP+ modules (you are using 10G, right?) can be horribly
non-compliant and have absolute garbage programmed into the module
EEPROM.

--
Hisashi T Fujinaka - htodd%twofifty.com@localhost
BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee