K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2011-05-30T15:06:57.354660Z
K 7
svn:log
V 542
Enable setting the short-GI bit when TX'ing HT rates but only if the
hardware supports it.

Since ni->ni_htcap in hostap mode is what the remote end has advertised,
not what has been negotiated/decided, we need to check ourselves what
the current channel width is and what the hardware supports before
enabling short-GI.

It's important that short-GI isn't enabled when it isn't negotiated
and when the hardware doesn't support it (ie, short-gi for 20mhz channels
on any chip < AR9287.)

I've quickly verified this on the AR9285 in 11n mode.

END