FHSS and address registration update

Fixed Address registration after parent update by RPL

Fixed Unicast random fixed channel bug.

Change-Id: Iae7ac55aab0323155cf8a9d8a66326bbd845189c

Author: Juha Heiskanen

source/6LoWPAN/Bootstraps/Generic/protocol_6lowpan.c

@@ -526,16 +526,21 @@ uint16_t protocol_6lowpan_neighbor_second_priority_set(int8_t interface_id, addr
     mac_neighbor_table_entry_t * entry = mac_neighbor_table_address_discover(mac_neighbor_info(cur), addr_ptr + PAN_ID_LEN, addr_type);
 
     if (entry) {
+        bool new_secondary = false;
         etx_storage_t *etx_entry = etx_storage_entry_get(interface_id, entry->index);
         // If secondary parent has changed clears priority from previous parent
         if (entry->link_role != SECONDARY_PARENT_NEIGHBOUR) {
+            new_secondary = true;
             protocol_6lowpan_neighbor_priority_clear_all(interface_id, PRIORITY_2ND);
         }
         entry->link_role = SECONDARY_PARENT_NEIGHBOUR;
 
         if (etx_entry) {
             protocol_stats_update(STATS_ETX_2ND_PARENT, etx_entry->etx >> 4);
         }
+        if (new_secondary) {
+            ws_secondary_parent_update(cur);
+        }
         return 1;
     } else {
         return 0;

source/6LoWPAN/ws/ws_bootstrap.c

@@ -383,7 +383,9 @@ static int8_t ws_fhss_set_defaults(protocol_interface_info_entry_t *cur, fhss_ws
     fhss_configuration->ws_bc_channel_function = cur->ws_info->fhss_bc_channel_function;
     fhss_configuration->fhss_bc_dwell_interval = cur->ws_info->fhss_bc_dwell_interval;
     fhss_configuration->fhss_broadcast_interval = cur->ws_info->fhss_bc_interval;
-    fhss_configuration->unicast_fixed_channel = cur->ws_info->fhss_uc_fixed_channel;
+    if (cur->ws_info->fhss_uc_fixed_channel != 0xffff) {
+        fhss_configuration->unicast_fixed_channel = cur->ws_info->fhss_uc_fixed_channel;
+    }
     fhss_configuration->broadcast_fixed_channel = cur->ws_info->fhss_bc_fixed_channel;
     ws_generate_channel_list(fhss_configuration->channel_mask, cur->ws_info->hopping_schdule.number_of_channels, cur->ws_info->hopping_schdule.regulatory_domain);
 
@@ -490,7 +492,7 @@ static void ws_bootstrap_primary_parent_set(struct protocol_interface_info_entry
         fhss_configuration.broadcast_fixed_channel = cur->ws_info->fhss_bc_fixed_channel;
 
     }
-    fhss_configuration.unicast_fixed_channel = cur->ws_info->fhss_uc_fixed_channel;
+
     ns_fhss_ws_configuration_set(cur->ws_info->fhss_api, &fhss_configuration);
 
     // We have broadcast schedule set up set the broadcast parent schedule
@@ -1448,6 +1450,14 @@ static void ws_set_fhss_hop(protocol_interface_info_entry_t *cur)
     ns_fhss_ws_set_hop_count(cur->ws_info->fhss_api, own_hop);
 }
 
+static void ws_address_registration_update(protocol_interface_info_entry_t *interface)
+{
+    if (!interface->ws_info->address_registration_event_active) {
+        interface->ws_info->address_registration_event_active = true;
+        tr_info("RPL parent update ... register ARO");
+        ws_bootsrap_event_trig(WS_ADDRESS_ADDED, interface->bootStrapId, ARM_LIB_LOW_PRIORITY_EVENT, NULL);
+    }
+}
 
 static void ws_bootstrap_rpl_callback(rpl_event_t event, void *handle)
 {
@@ -1472,8 +1482,7 @@ static void ws_bootstrap_rpl_callback(rpl_event_t event, void *handle)
          */
 
     } else if (event == RPL_EVENT_DAO_PARENT_SWITCH) {
-        tr_info("RPL parent update ... register ARO");
-        ws_bootsrap_event_trig(WS_ADDRESS_ADDED, cur->bootStrapId, ARM_LIB_LOW_PRIORITY_EVENT, NULL);
+        ws_address_registration_update(cur);
     }
     cur->ws_info->rpl_state = event;
     tr_info("RPL event %d", event);
@@ -1861,6 +1870,7 @@ static void ws_bootstrap_event_handler(arm_event_s *event)
         ws_bootstrap_state_change(cur, ER_BOOTSRAP_DONE);
         break;
     case WS_ADDRESS_ADDED:
+        cur->ws_info->address_registration_event_active = false;
         if (!ws_bootstrap_address_registration_ongoing(cur)) {
             rpl_control_register_address(cur, (if_address_entry_t *) event->data_ptr);
         }
@@ -2052,6 +2062,26 @@ void ws_primary_parent_update(protocol_interface_info_entry_t *interface, mac_ne
         neighbor_info.neighbor = neighbor;
         neighbor_info.ws_neighbor = ws_neighbor_class_entry_get(&interface->ws_info->neighbor_storage, neighbor->index);
         ws_bootstrap_primary_parent_set(interface, &neighbor_info);
+
+        //Clear both address registration
+        ns_list_foreach(if_address_entry_t, address, &interface->ip_addresses) {
+            if (!addr_is_ipv6_link_local(address->address)) {
+                address->addr_reg_done = 0;
+                ws_address_registration_update(interface);
+            }
+        }
+    }
+}
+
+void ws_secondary_parent_update(protocol_interface_info_entry_t *interface)
+{
+    if (interface->ws_info) {
+        ns_list_foreach(if_address_entry_t, address, &interface->ip_addresses) {
+            if (!addr_is_ipv6_link_local(address->address)) {
+                address->addr_reg_done = 0;
+                ws_address_registration_update(interface);
+            }
+        }
     }
 }
 

source/6LoWPAN/ws/ws_bootstrap.h

@@ -56,6 +56,8 @@ void ws_bootstrap_trickle_timer(protocol_interface_info_entry_t *cur, uint16_t t
 
 void ws_primary_parent_update(protocol_interface_info_entry_t *interface, mac_neighbor_table_entry_t *neighbor);
 
+void ws_secondary_parent_update(protocol_interface_info_entry_t *interface);
+
 void ws_nud_entry_remove_active(protocol_interface_info_entry_t *cur, void *neighbor);
 
 void ws_nud_active_timer(protocol_interface_info_entry_t *cur, uint16_t ticks);
@@ -66,6 +68,7 @@ void ws_nud_active_timer(protocol_interface_info_entry_t *cur, uint16_t ticks);
 #define ws_bootstrap_state_machine(cur)
 #define ws_bootstrap_restart(cur)
 #define ws_primary_parent_update(interface, neighbor)
+#define ws_secondary_parent_update(interface)
 
 #endif //HAVE_WS
 

source/6LoWPAN/ws/ws_common.h

@@ -67,6 +67,7 @@ typedef struct ws_info_s {
     uint32_t pan_version_timer;            /**< border router version udate timeout */
     uint32_t pan_version_timeout_timer;    /**< routers will fallback to previous state after this */
     uint8_t gtkhash[32];
+    bool address_registration_event_active : 1;
     bool configuration_learned:1;
     bool trickle_pas_running:1;
     bool trickle_pa_running:1;