On 01/18/2012 02:19 PM, Jesper Dangaard Brouer wrote: > On Wed, 2012-01-18 at 22:45 +0100, Benny Amorsen wrote: >> Jesse Brandeburg<[email protected]> writes: >> >>> For X520 adapters, the documentation[1] states that which SFP+ >>> adapters are/are not supported. Direct attach cables are also >>> supported. >>> >>> [1] http://www.intel.com/support/network/adapter/pro100/sb/CS-030612.htm >> >> 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. > > I cannot understand why Intel are pulling a stunt like this! :-( > > I have read the code, and the limitation comes from a EEPROM setting on > the NIC, see define "IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP 0x1". > > Here is a (untested) patch I believe removes the limitation in the > driver: > > > [PATCH] ixgbe: Always allow any SFP+ regardless of EEPROM setting. > > Intel are trying to limit which SFP's we can use in our NICs. > We don't like this practices in the Linux Kernel.
I think that you should at least print some big warnings in the kernel logs if you do this, as well as all the info you can find on the non-supported SFP+ module in use so that folks can debug things if the SFP+ doesn't properly work. As previously mentioned, I found a case where some random SFP+ did NOT work with a similar hack in place... Thanks, Ben -- Ben Greear <[email protected]> Candela Technologies Inc http://www.candelatech.com ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
