Impelement LLC reset

Author: Juha Heiskanen

source/6LoWPAN/ws/ws_llc_data_service.c

@@ -669,8 +669,19 @@ int8_t ws_llc_create(struct protocol_interface_info_entry *interface, ws_asynch_
 
 void ws_llc_reset(struct protocol_interface_info_entry *interface)
 {
-    (void)interface;
+    llc_data_base_t *base = ws_llc_discover_by_interface(interface);
+    if (!base) {
+        return;
+    }
     //Clean Message queue's
+    mcps_purge_t purge_req;
+    ns_list_foreach_safe(llc_message_t, message, &base->llc_message_list) {
+        purge_req.msduHandle = message->msg_handle;
+        llc_message_free(message, base);
+        base->interface_ptr->mac_api->mcps_purge_req(base->interface_ptr->mac_api, &purge_req);
+
+    }
+    memset(&base->ie_params, 0, sizeof(llc_ie_params_t));
 }
 
 int8_t ws_llc_asynch_request(struct protocol_interface_info_entry *interface, asynch_request_t *request)