regulatory: use RCU to protect last_request
This will allow making freq_reg_info() lock-free.
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 96b0f07..f17ed59 100644
--- a/include/net/regulatory.h
+++ b/include/net/regulatory.h
@@ -36,6 +36,7 @@
/**
* struct regulatory_request - used to keep track of regulatory requests
*
+ * @rcu_head: RCU head struct used to free the request
* @wiphy_idx: this is set if this request's initiator is
* %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This
* can be used by the wireless core to deal with conflicts
@@ -73,6 +74,7 @@
* @list: used to insert into the reg_requests_list linked list
*/
struct regulatory_request {
+ struct rcu_head rcu_head;
int wiphy_idx;
enum nl80211_reg_initiator initiator;
enum nl80211_user_reg_hint_type user_reg_hint_type;