nl80211: Convert sched_scan_req pointer to RCU pointer

Because of possible races when accessing sched_scan_req pointer in
rdev, the sched_scan_req is converted to RCU pointer.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 4bc1fc9971a5..45d4d7292e53 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1516,6 +1516,7 @@ struct cfg80211_match_set {
  * @mac_addr_mask: MAC address mask used with randomisation, bits that
  *      are 0 in the mask should be randomised, bits that are 1 should
  *      be taken from the @mac_addr
+ * @rcu_head: RCU callback used to free the struct
  */
 struct cfg80211_sched_scan_request {
         struct cfg80211_ssid *ssids;
@@ -1537,6 +1538,7 @@ struct cfg80211_sched_scan_request {
         struct wiphy *wiphy;
         struct net_device *dev;
         unsigned long scan_start;
+        struct rcu_head rcu_head;
 
         /* keep last */
         struct ieee80211_channel *channels[0];