RPL Poison update

rpl_control_poison() by count 1 will trigger faster DIO Poison.
RPL trigger a RPL_EVENT_POISON_READY when poison count reach zero.

source/RPL/rpl_control.h

@@ -36,6 +36,7 @@ typedef enum rpl_event {
     RPL_EVENT_LOCAL_REPAIR_START, /* RPL start scanning new parent by multicast DIS user can disable beacon request responser here*/
     RPL_EVENT_LOCAL_REPAIR_NO_MORE_DIS, /* RPL not sending DIS anymore user can report bootstrap error */
     RPL_EVENT_DAO_PARENT_ADD, /* RPL indicate that DAO downward Parent has been added */
+    RPL_EVENT_POISON_FINISHED, /* RPL have finished Dodag Poison proces */
 } rpl_event_t;
 
 typedef void rpl_domain_callback_t(rpl_event_t event, void *handle);
@@ -200,6 +201,7 @@ const rpl_dodag_conf_t *rpl_control_get_dodag_config(const struct rpl_instance *
 const uint8_t *rpl_control_preferred_parent_addr(const struct rpl_instance *instance, bool global);
 uint16_t rpl_control_current_rank(const struct rpl_instance *instance);
 uint8_t rpl_policy_mrhof_parent_set_size_get(const rpl_domain_t *domain);
+void rpl_control_instant_poison(struct protocol_interface_info_entry *cur, rpl_domain_t *domain);
 
 #else /* HAVE_RPL */
 
@@ -211,6 +213,7 @@ uint8_t rpl_policy_mrhof_parent_set_size_get(const rpl_domain_t *domain);
 #define rpl_control_address_register_done(interface, ll_addr, status) (false)
 #define rpl_policy_mrhof_parent_set_size_get(domain) (0)
 #define rpl_control_set_mrhof_parent_set_size(parent_set_size)
+#define rpl_control_instant_poison(cur, domain) ((void) 0)
 #endif /* HAVE_RPL */
 
 #endif /* RPL_CONTROL_H_ */

source/RPL/rpl_upward.c

@@ -347,6 +347,14 @@ void rpl_instance_poison(rpl_instance_t *instance, uint8_t count)
     rpl_instance_inconsistency(instance);
 }
 
+void rpl_control_instant_poison(protocol_interface_info_entry_t *cur, rpl_domain_t *domain)
+{
+    ns_list_foreach(rpl_instance_t, instance, &domain->instances) {
+        rpl_instance_poison(instance, 1);
+        rpl_instance_dio_trigger(instance, cur, NULL);
+    }
+}
+
 void rpl_instance_force_leaf(rpl_instance_t *instance)
 {
     instance->current_rank = RPL_RANK_INFINITE;
@@ -1620,6 +1628,10 @@ void rpl_instance_dio_trigger(rpl_instance_t *instance, protocol_interface_info_
         instance->poison_count--;
         rank = RPL_RANK_INFINITE;
         tr_debug("Poison count -> set RPL_RANK_INFINITE");
+        if (instance->poison_count == 0) {
+            //Report RPL user that Poison message is triggered
+            rpl_control_event(instance->domain, RPL_EVENT_POISON_FINISHED);
+        }
     }
 
     // Always send config in unicasts (as required), never in multicasts (optional)

test/nanostack/unittest/stub/rpl_upward_stub.c

@@ -508,4 +508,9 @@ bool rpl_instance_possible_better_candidate(const rpl_instance_t *instance, rpl_
     return false;
 }
 
+void rpl_control_instant_poison(struct protocol_interface_info_entry *cur, rpl_domain_t *domain)
+{
+
+}
+
 #endif /* HAVE_RPL */