K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2015-09-18T04:12:11.253273Z
K 7
svn:log
V 681
Add initial 11n support to if_rsu.

* Add a tunable to enable 11n if it's available, so to not anger people
  who upgrade.

  kenv hw.usb.rsu.enable_11n=1 before inserting the device.

* Add initial 11n htconfig bits;
* Enable 40MHz mode if it's available;
* Add 11n channels;
* Set 11n bits in the firmware.

It works for RX; I haven't tested TX aggregation just yet.
However the firmware doesn't do RX re-ordering, so I have to tie it into
the net80211 A-MPDU RX reorder path before I flip this on by default.

I've verified that I'm indeed actually seeing MCS 0->7 rates being received.
I haven't dug into whether it's actually transmitting 11n rates; I'll dig into
that later.

END