mac80211 provides its own workqueue for drivers and internal mac80211 use. The workqueue is a single threaded workqueue and can only be accessed by helpers for sanity checking. Drivers must ensure all work added onto the mac80211 workqueue should be cancelled on the driver stop callback.

mac80211 will flushed the workqueue upon interface removal and during suspend.

All work performed on the mac80211 workqueue must not acquire the RTNL lock.