mac80211: fix the assignment of PREQ's MAC address for Proactive RANN

Record the RANN sender's address only for RANNs that meet the acceptance
criteria (per sections 13.10.12.4.2).
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Reviewed-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/mesh_hwmp.c

@@ -800,10 +800,11 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
 				       0, sdata);
 		mpath->sn = orig_sn;
 		mpath->rann_metric = metric + metric_txsta;
+		/* Recording RANNs sender address to send individually
+		 * addressed PREQs destined for root mesh STA */
+		memcpy(mpath->rann_snd_addr, mgmt->sa, ETH_ALEN);
 	}
 
-	/* Using individually addressed PREQ for root node */
-	memcpy(mpath->rann_snd_addr, mgmt->sa, ETH_ALEN);
 	mpath->is_root = true;
 
 	if (root_is_gate)

net/mac80211/mesh_pathtbl.c

@@ -538,6 +538,8 @@ int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata)
 
 	read_lock_bh(&pathtbl_resize_lock);
 	memcpy(new_mpath->dst, dst, ETH_ALEN);
+	memset(new_mpath->rann_snd_addr, 0xff, ETH_ALEN);
+	new_mpath->is_root = false;
 	new_mpath->sdata = sdata;
 	new_mpath->flags = 0;
 	skb_queue_head_init(&new_mpath->frame_queue);