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/regulatory.h b/include/net/regulatory.h
index 7dcaa27..96b0f07 100644
--- a/include/net/regulatory.h
+++ b/include/net/regulatory.h
@@ -18,6 +18,7 @@
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#include <linux/rcupdate.h>
/**
* enum environment_cap - Environment parsed from country IE
@@ -101,6 +102,7 @@
};
struct ieee80211_regdomain {
+ struct rcu_head rcu_head;
u32 n_reg_rules;
char alpha2[2];
u8 dfs_region;
