Neighbour remove clear active Nud table if neighbor is at list.

Change-Id: I2cfbf1e1b6c5546ca70e6c14a5028a94c5dc63e9

Author: Juha Heiskanen

source/6LoWPAN/ws/ws_bootstrap.c

@@ -89,6 +89,8 @@ static void ws_bootstrap_nw_key_insert(protocol_interface_info_entry_t *cur, uin
 static void ws_bootstrap_nw_key_index_set(protocol_interface_info_entry_t *cur, uint8_t index);
 static void ws_bootstrap_authentication_completed(protocol_interface_info_entry_t *cur, bool success);
 static void ws_bootstrap_pan_version_increment(protocol_interface_info_entry_t *cur);
+static ws_nud_table_entry_t *ws_nud_entry_discover(protocol_interface_info_entry_t *cur, void *neighbor);
+static void ws_nud_entry_remove(protocol_interface_info_entry_t *cur, mac_neighbor_table_entry_t *entry_ptr);
 
 mac_neighbor_table_entry_t *ws_bootstrap_mac_neighbor_add(struct protocol_interface_info_entry *interface, const uint8_t *src64)
 
@@ -222,22 +224,33 @@ static ws_nud_table_entry_t *ws_nud_entry_get_free(protocol_interface_info_entry
 
 
 void ws_nud_entry_remove_active(protocol_interface_info_entry_t *cur, void *neighbor)
+{
+    ws_nud_table_entry_t *entry = ws_nud_entry_discover(cur, neighbor);
+
+    if (entry) {
+        mac_neighbor_table_entry_t *mac_neighbor = neighbor;
+        ns_list_remove(&cur->ws_info->active_nud_process, entry);
+        ns_list_add_to_end(&cur->ws_info->free_nud_entries, entry);
+        if (mac_neighbor->nud_active) {
+            mac_neighbor_table_neighbor_refresh(mac_neighbor_info(cur), mac_neighbor, mac_neighbor->link_lifetime);
+        }
+
+        mac_neighbor_table_neighbor_connected(mac_neighbor_info(cur), mac_neighbor);
+    }
+}
+
+
+static ws_nud_table_entry_t *ws_nud_entry_discover(protocol_interface_info_entry_t *cur, void *neighbor)
 {
     ns_list_foreach(ws_nud_table_entry_t, entry, &cur->ws_info->active_nud_process) {
         if (entry->neighbor_info == neighbor) {
-            mac_neighbor_table_entry_t *mac_neighbor = neighbor;
-            ns_list_remove(&cur->ws_info->active_nud_process, entry);
-            ns_list_add_to_end(&cur->ws_info->free_nud_entries, entry);
-            if (mac_neighbor->nud_active) {
-                mac_neighbor_table_neighbor_refresh(mac_neighbor_info(cur), mac_neighbor, mac_neighbor->link_lifetime);
-            }
-
-            mac_neighbor_table_neighbor_connected(mac_neighbor_info(cur), mac_neighbor);
-            return;
+            return entry;
         }
     }
+    return NULL;
 }
 
+
 static void ws_nud_state_clean(protocol_interface_info_entry_t *cur, ws_nud_table_entry_t *entry)
 {
     mac_neighbor_table_entry_t *neighbor = entry->neighbor_info;
@@ -249,6 +262,14 @@ static void ws_nud_state_clean(protocol_interface_info_entry_t *cur, ws_nud_tabl
     }
 }
 
+static void ws_nud_entry_remove(protocol_interface_info_entry_t *cur, mac_neighbor_table_entry_t *entry_ptr)
+{
+    ws_nud_table_entry_t *nud_entry = ws_nud_entry_discover(cur, entry_ptr);
+    if (nud_entry) {
+        ws_nud_state_clean(cur, nud_entry);
+    }
+}
+
 static bool ws_nud_message_build(protocol_interface_info_entry_t *cur, mac_neighbor_table_entry_t *neighbor)
 {
     //Send NS
@@ -1307,6 +1328,10 @@ static void ws_neighbor_entry_remove_notify(mac_neighbor_table_entry_t *entry_pt
         protocol_6lowpan_release_short_link_address_from_neighcache(cur, entry_ptr->mac16);
         protocol_6lowpan_release_long_link_address_from_neighcache(cur, entry_ptr->mac64);
     }
+
+    //NUD Process Clear Here
+    ws_nud_entry_remove(cur, entry_ptr);
+
     ws_bootstrap_neighbor_delete(cur, entry_ptr->index);
 }