Additional time for distribution of dataset added (ARMmbed#1892)

This reduces the possibility of routers changing state 
before distributing updated settings.

source/6LoWPAN/Thread/thread_joiner_application.c

@@ -54,6 +54,7 @@
 #include "thread_management_if.h"
 #include "thread_common.h"
 #include "thread_bootstrap.h"
+#include "thread_router_bootstrap.h"
 #include "thread_network_synch.h"
 #include "thread_network_data_lib.h"
 #include "thread_joiner_application.h"
@@ -1922,6 +1923,8 @@ int thread_joiner_application_update_configuration(uint8_t interface_id, uint8_t
     }
     thread_meshcop_tlv_data_get_uint64(msg_ptr, msg_len, MESHCOP_TLV_ACTIVE_TIME_STAMP, &this->active_configuration_ptr->timestamp);
     link_configuration_update(this->configuration_ptr,msg_ptr,msg_len);
+    // allow 5 seconds delay before state change for data response propagation
+    thread_router_bootstrap_delay_reed_jitter(interface_id, 5);
     ns_dyn_mem_free(configuration_ptr);
     thread_joiner_application_configuration_nvm_save(interface_id);
 

source/6LoWPAN/Thread/thread_router_bootstrap.c

@@ -2782,4 +2782,18 @@ void thread_router_bootstrap_address_change_notify_send(protocol_interface_info_
     thread_info(cur)->proactive_an_timer = THREAD_PROACTIVE_AN_SEND_DELAY;
 }
 
+void thread_router_bootstrap_delay_reed_jitter(int8_t interface_id, uint16_t delay)
+{
+    protocol_interface_info_entry_t *cur = protocol_stack_interface_info_get_by_id(interface_id);
+    if (!cur) {
+        return;
+    }
+    if (cur->thread_info->thread_device_mode != THREAD_DEVICE_MODE_ROUTER) {
+        return;
+    }
+    // delay reed jitter timer to allow for settings changes to distribute
+    thread_info(cur)->reedJitterTimer += delay;
+    return;
+}
+
 #endif /* HAVE_THREAD_ROUTER */

source/6LoWPAN/Thread/thread_router_bootstrap.h

@@ -76,6 +76,7 @@ void thread_router_bootstrap_anycast_address_register(protocol_interface_info_en
 void thread_router_bootstrap_network_data_distribute(protocol_interface_info_entry_t *cur);
 bool thread_router_bootstrap_routing_allowed(struct protocol_interface_info_entry *cur);
 void thread_router_bootstrap_address_change_notify_send(protocol_interface_info_entry_t *cur);
+void thread_router_bootstrap_delay_reed_jitter(int8_t interface_id, uint16_t delay);
 
 #else
 
@@ -108,7 +109,7 @@ void thread_router_bootstrap_address_change_notify_send(protocol_interface_info_
 #define thread_router_bootstrap_routing_allowed(cur) false
 #define thread_router_bootstrap_address_change_notify_send(cur)
 #define thread_router_bootstrap_reed_merge_advertisement(cur)
-
+#define thread_router_bootstrap_delay_reed_jitter(interface_id, delay)
 #endif/*HAVE_THREAD_ROUTER*/
 
 #endif /* THREAD_ROUTER_BOOTSTRAP_H_ */