mac80211: support userspace MPM

Earlier mac80211 would check whether some kind of mesh
security was enabled, when the real question was "is the
MPM in userspace"?

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 08df966..e259951 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -437,8 +437,9 @@
 {
 	struct sta_info *sta = NULL;
 
-	/* Userspace handles peer allocation when security is enabled */
-	if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED)
+	/* Userspace handles station allocation */
+	if (sdata->u.mesh.user_mpm ||
+	    sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED)
 		cfg80211_notify_new_peer_candidate(sdata->dev, addr,
 						   elems->ie_start,
 						   elems->total_len,
@@ -670,6 +671,10 @@
 	if (len < IEEE80211_MIN_ACTION_SIZE + 3)
 		return;
 
+	if (sdata->u.mesh.user_mpm)
+		/* userspace must register for these */
+		return;
+
 	if (is_multicast_ether_addr(mgmt->da)) {
 		mpl_dbg(sdata,
 			"Mesh plink: ignore frame from multicast address\n");