R720 SR-IOV failure on I350 (success on X540)

According to my iDRAC card, my NICs have firmware version 13.1.10.

I'm successfully using SR-IOV on the X540 ports but not on the I350 ports.

I spoke with an Intel Engineer and he asked "could you please send along the output of lspci
-vvv -s 08:00.0 and lspci -vvv -s 08:00.1"? I provided him the information.

This is the Intel Engineer's response:

==================================================================

OK, that's what I suspected.  Your config is missing the SR-IOV
capability structure.  It would look something like this:

       Capabilities: [160] Single Root I/O Virtualization (SR-IOV)
               IOVCap: Migration-, Interrupt Message Number: 000
               IOVCtl: Enable- Migration- Interrupt- MSE- ARIHierarchy-
               IOVSta: Migration-
               Initial VFs: 8, Total VFs: 8, Number of VFs: 0, Function Dependency Link: 00
               VF offset: 384, stride: 4, Device ID: 1520
               Supported Page Size: 00000553, System Page Size: 00000001
               VF Migration: offset: 00000000, BIR: 1

This is from a dump on an I350 controller on one of my lab systems.

This is a feature that is controlled by EEPROM settings.  I'm guessing
that Dell has decided to defeature SR-IOV support for the I350 devices
on their daughter card.  Or they could have made a mistake in
programming the EEPROM.  In either case the attempt to enable SR-IOV on
devices without the SR-IOV capability structure will fail.  I'd suggest
contacting your Dell supplier and getting further information from them.

==================================================================

Thanks!

For the whole conversation with the Intel engineer, see the following URLs:

http://sourceforge.net/mailarchive/message.php?msg_id=29312286

http://sourceforge.net/mailarchive/message.php?msg_id=29315138

http://sourceforge.net/mailarchive/message.php?msg_id=29315201

http://sourceforge.net/mailarchive/message.php?msg_id=29315265