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.