Hi,
So ... I mentioned a few months ago this was the direction I was
going in, and now here I have it. We've been running with it for
a while, and it looks good.
There's a kind of pointless commit in there that adds some wiphy
locking assertions to the wdev as an intermediate step, I can
remove that if you think that's better. We ran with it at that
intermediate stage for a while to test things.
As you can see in the list of patches, mutexes are removed:
* in mac80211: sta_mtx, key_mtx, chanctx_mtx, ampdu_mlme.mtx,
local->mtx, and iflist_mtx is reduced to just
a driver helper mutex basically
* in cfg80211, and was used by mac80211, the wdev mutex
This also fixes a number of potential deadlocks lockdep would
report in multi-link scenarios, but generally of course radically
simplifies locking, no more worries about dependencies between
the different mutexes in mac80211, etc.
johannes
