ixl(4): Update to 1.7.12-k

[erj]

Summary

Refresh upstream driver before impending conversion to iflib. This should be replaced by an iflib-converted version in a few weeks (in D5214), with this version eventually getting MFC'd into stable/10.

Major new features:

• Support for Fortville-based 25G adapters
• Support for I2C reads/writes

(One note on the I2C functionality: Fortville currently doesn't support any way for software to synchronize accesses to the I2C bus with the firmware. So, to prevent getting or sending corrupt data, you should set dev.ixl.0.debug.disable_fw_link_management=1 when using I2C [this will disable link!], then set it to 0 when done. The driver implements the SIOCGI2C ioctl, so ifconfig -v works for reading I2C data, but there are read_i2c and write_i2c sysctls under the debug tree [the latter being useful for upper page support in QSFP+]).

• Addition of an iWARP client interface (so the future iWARP driver for X722 devices can communicate with the base driver)
  • Compiling this option in is enabled by default, with "options IXL_IW" in GENERIC. I'm open to just stripping out the define and leaving the interface as always enabled, if adding that is too much.

Test Plan

I've tried compiling this with and without IXL_IW on amd64 with no errors.

Functional touch testing (on this patch) to be done by Jeff's team.

[sbruno]

sys/modules/ixlv/Makefile

5–6

Is pci_iov_if.h no longer needed?

[erj]

sys/modules/ixlv/Makefile

5–6

The VF driver never actually needed any PCI_IOV stuff. But actually the makefile is missing opt_ixl.h, so it won't build as a module. I'm about to fix that.

[erj]

ixl(4) changes

• Add opt_ixl.h to ixlv Makefile for build
• Add comment describing IXL_IW to GENERIC config
• Default to disabling the iWARP client interface by setting tunable to 0

[sbruno]

Commit it and lets see what else we can break today.

[erj]

I'm going to wait for Jeff's team to give the okay before I commit it. I don't want to break more than I have to. :v

[erj]

Committed in rS313497.