How difficult would it be to flesh out this rough spot? For others, it seems like a FreeBSD dev might not at all be able to get ac support for hardware with the drivers as locked down as they are. But if I knew the problem was tractable I might try my hand at it someday. Could be a good resume driven project.
I can't begin to answer this question, sorry! I mostly don't work on network drivers at all, and the 80211 family/stack is its own beast that I am utterly unfamiliar with.
