K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2013-02-27T00:49:32.429408Z
K 7
svn:log
V 472
Enable STBC for the given rate series if it's negotiated:

* If both ends have negotiated (at least) one stream;
* Only if it's a single stream rate (MCS0-7);
* Only if there's more than one TX chain enabled.

Tested:

* AR9280 STA mode -> Atheros AP; tested both MCS2 (STBC) and MCS12 (no STBC.)
  Verified using athalq to inspect the TX descriptors.

TODO:

* Test AR5416 - no STBC should be enabled;
* Test AR9280 with one TX chain enabled - no STBC should be enabled.

END