I submitted kern/173898 a while back, and iwn(4) has been working on my laptop since last November. As said before, HT40 does not (yet?) work on the chip. However, at least throughput on my box is okay. The diff attached to this integrates http://people.freebsd.org/~mav/iwn6235.patch and is compatible with the commits that touched iwn in August/September. Fix: Patch attached with submission follows:
Responsible Changed From-To: freebsd-bugs->freebsd-wireless Over to maintainer(s).
State Changed From-To: open->closed fixed in -head
Assign to committer that resolved. Also track this was not MFC'd to stable/10. Also reference other related (same?) issues, one of which is still not closed