lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Wed, 18 Jan 2012 14:40:47 -0800
From:	Ben Greear <>
To:	"Fujinaka, Todd" <>
CC:	Benny Amorsen <>,
	"Brandeburg, Jesse" <>,
	Jesper Dangaard Brouer <>,
	"" <>
Subject: Re: [E1000-devel] ixgbe: Unsupported SFP+ modules on 10Gbit/s X520-DA2

On 01/18/2012 02:21 PM, Fujinaka, Todd wrote:
> -----Original Message-----
> From: Benny Amorsen []
> Sent: Wednesday, January 18, 2012 1:45 PM
> To: Brandeburg, Jesse
> Cc: Jesper Dangaard Brouer;;
> Subject: Re: [E1000-devel] ixgbe: Unsupported SFP+ modules on 10Gbit/s X520-DA2 NIC?
> Jesse Brandeburg<>  writes:
>> For X520 adapters, the documentation[1] states that which SFP+
>> adapters are/are not supported.  Direct attach cables are also
>> supported.
>> [1]
> I can't believe that locked optics have now arrived on commodity hardware. I have been trying to migrate to all-Intel networking at work; that effort is certainly on hold now.
> That's up to you. There's "locked" and there's "locked". I'm surprised
> that Benny and Jesper haven't looked at the driver to see where the
> messages come from.

As a datapoint:  We had a customer trying to use a non-supported
SFP+ module in an 82599 NIC, and they hacked the driver to over-rule
the exclusion.  It sort of worked for them, but never well, and never
at any decent throughput.

Now, I have no idea if their SFP+ was decent or not, but at least in
some cases, just over-riding the driver doesn't fix things.

It does seem like Intel could offer a module option to easily over-ride the
SFP+ exclusion for folks that wanted to test new SFP+ modules for them,


Ben Greear <>
Candela Technologies Inc
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists