regulatory: use RCU to protect global and wiphy regdomains
To simplify the locking and not require cfg80211_mutex
(which nl80211 uses to access the global regdomain) and
also to make it possible for drivers to access their
wiphy->regd safely, use RCU to protect these pointers.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index c222e5f..f3be58a 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2369,7 +2369,7 @@
/* fields below are read-only, assigned by cfg80211 */
- const struct ieee80211_regdomain *regd;
+ const struct ieee80211_regdomain __rcu *regd;
/* the item in /sys/class/ieee80211/ points to this,
* you need use set_wiphy_dev() (see below) */