K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2012-03-25T03:14:31.133592Z
K 7
svn:log
V 509
Add the new channel width change field to the ath(4) driver.

This is not entirely correct as it simply resets the channel, flushing
whatever is in the TX/RX queue.  This can and will break aggregation
BAW tracking.  But the alternative (HT40 frames being sent with the hardware
in HT20 mode) is even worse.

There's still a small window between the htinfo being received (and the ni_chw
field being updated) which could cause problems.  I'll look at fleshing this
out in follow-up commits.

PR:		kern/166286

END