Wi-SUN interface now informs address changes as interface events

When addressing changes in Border router Wi-SUN interface
it also informs the application which can then check the
available addresses and act accordingly if address is changed

Allow arm_net_address_get function to return Link Local address
even if the interface does not have global address available

Author: Mika Tervonen

source/6LoWPAN/ws/ws_bootstrap.c

@@ -221,25 +221,22 @@ static void ws_address_reregister_trig(struct protocol_interface_info_entry *int
 
 static void ws_bootstrap_address_notification_cb(struct protocol_interface_info_entry *interface, const struct if_address_entry *addr, if_address_callback_t reason)
 {
+
     /* No need for LL address registration */
     if (addr->source == ADDR_SOURCE_UNKNOWN || !interface->ws_info) {
         return;
     }
     if (reason == ADDR_CALLBACK_DAD_COMPLETE) {
-        //Trig Address Registartion only when Bootstrap is ready
+        //If address is generated manually we need to force registration
         if (addr->source != ADDR_SOURCE_DHCP) {
+            //Trigger Address Registration only when Bootstrap is ready
             if (interface->nwk_bootstrap_state == ER_BOOTSRAP_DONE) {
                 tr_debug("Address registration %s", trace_ipv6(addr->address));
                 ws_address_registration_update(interface, addr->address);
             }
             ws_address_reregister_trig(interface);
 
         }
-        if (addr_ipv6_scope(addr->address, interface) > IPV6_SCOPE_LINK_LOCAL) {
-            // at least ula address available inside mesh.
-            interface->global_address_available = true;
-        }
-
     } else if (reason == ADDR_CALLBACK_DELETED) {
         // What to do?
         // Go through address list and check if there is global address still available
@@ -251,14 +248,22 @@ static void ws_bootstrap_address_notification_cb(struct protocol_interface_info_
         }
         //Discover prefix policy
         addr_policy_remove_by_label(WS_NON_PREFFRED_LABEL);
+    }
 
-        interface->global_address_available = false;
-        ns_list_foreach(if_address_entry_t, addr_str, &interface->ip_addresses) {
-            if (addr_ipv6_scope(addr_str->address, interface) > IPV6_SCOPE_LINK_LOCAL) {
-                // at least ula address available inside mesh.
-                interface->global_address_available = true;
-                break;
-            }
+    // Check the Address status if we have global address available.
+    interface->global_address_available = false;
+    ns_list_foreach(if_address_entry_t, addr_str, &interface->ip_addresses) {
+        if (addr_ipv6_scope(addr_str->address, interface) > IPV6_SCOPE_LINK_LOCAL) {
+            // at least ula address available inside mesh.
+            interface->global_address_available = true;
+            break;
+        }
+    }
+    // Addressing in Wi-SUN interface was changed for Border router send new event so Application can update the state
+    if (interface->bootsrap_mode == ARM_NWK_BOOTSRAP_MODE_6LoWPAN_BORDER_ROUTER &&
+            interface->nwk_bootstrap_state == ER_BOOTSRAP_DONE) {
+        if (interface->bootsrap_state_machine_cnt == 0) {
+            interface->bootsrap_state_machine_cnt = 10; //Re trigger state check
         }
     }
 }
@@ -3222,11 +3227,7 @@ void ws_bootstrap_configure_process(protocol_interface_info_entry_t *cur)
 
     if (cur->ws_info->configuration_learned) {
         ws_bootstrap_network_configuration_learn(cur);
-
-
         ws_bootstrap_event_operation_start(cur);
-
-
         return;
     }
     return;

source/libNET/src/ns_net.c

@@ -425,7 +425,8 @@ int8_t arm_net_address_get(int8_t interface_id, net_address_t addr_id, uint8_t *
         return -1;
     }
 
-    if (!cur->global_address_available) { //Should also check Check Bootstrap state
+    if (!cur->global_address_available && addr_id != ADDR_IPV6_LL) {
+        //Should also check Check Bootstrap state
         return -1;
     }