ixgbe(4): Update shared code, add support for X552, fix bug

[krzysztof.galazka_intel.com]

Summary

This patch will:

• Update ixgbe shared code
• Add support for Intel(R) Ethernet Connection X552 1000BASE-T
• Add error handling for link state check preventing VF from stopping traffic after changing PF's MTU value.

History of commits included in this revision may be found at https://github.com/intel-wired-ethernet/freebsd/commits/ixgbe-D13885

Test Plan

Compile-tested with minimal touch-testing. Respectfully request waiting for our Validation Team to perform a test pass before committing.

[piotr.pietruszewski_intel.com]

• Bump version numbers.

[sbruno]

Let me know if you need me to commit this.

[skozlov]

Blocking until Intel internal validation is complete.

[jeffrey.e.pieper_intel.com]

ixv is totally broken. on a FreeBSD host with PCI_IOV, assigning an IP address to a "bare metal" ixv interface{F3125365} causes a kernel panic. On a Linux host, the VF hangs when assigned an IP address and requires a reboot of the VM to recover.

[piotr.pietruszewski_intel.com]

• Fix kernel panic occuring when IP is assigned to ixv interface

This patch will fix kernel panic occuring when IP address is assigned
to ixv interface on FreeBSD host with PCI_IOV.

[piotr.pietruszewski_intel.com]

• Fix adapter status reporting

[piotr.pietruszewski_intel.com]

The above two patches resolve aforementioned kernel panic issue. Issue with VFs unable to pass traffic on FreeBSD host with PCI_IOV is under investigation.

[piotr.pietruszewski_intel.com]

• Revert SRIOV initialization fix

SRIOV initialization fix is reverted at the request of Validation Team due to its incompleteness.

[krzysztof.galazka_intel.com]

Rebased on top of HEAD with erj@ patch for ixv_if_init (r328365)

[sbruno]

Unrelated, is there a use case for FreeBSD Bhyve here? If we had PF support on FreeBSD, could we use pass through to use VFs?

[skozlov]

In D13885#295301, @sbruno wrote:

Unrelated, is there a use case for FreeBSD Bhyve here? If we had PF support on FreeBSD, could we use pass through to use VFs?

Yes, that'd be possible.

[jeffrey.e.pieper_intel.com]

In D13885#295301, @sbruno wrote:

Unrelated, is there a use case for FreeBSD Bhyve here? If we had PF support on FreeBSD, could we use pass through to use VFs?

This patch originally was supposed to fix PCI_IOV support, but it introduced regressions. We thought it would be better to remove that portion of the patch until the code is complete and functional.

[skozlov]

The validation exposed a memory leak for a specific traffic pattern. After additional investigation the same leak was found in iflib igb/em driver as well.
As that's the only issue discovered during testing, and, most probably, it's not caused by the changes in the patch - it was decided to merge the patch.

[erj]

Committed in rS331224.

(Why do these never get automatically closed when I commit something?)