API for changing Thread SED parent buffer size

Application need to control number of packets a SED parent can store.
The new API allows application to set values for:
-number of small packets saved for each child
-total number of big packets saved to parent

Author: Arto Kinnunen

nanostack/thread_management_if.h

@@ -426,6 +426,20 @@ int thread_management_network_certificate_set(int8_t interface_id, const unsigne
  */
 int thread_management_partition_weighting_set(int8_t interface_id, uint8_t partition_weighting);
 
+/**
+ * Set Thread Sleepy End Device parent packet buffer size.
+ *
+ * This function can be used to adjust count of packets SED parent is storing.
+ *
+ * \param interface_id Network interface ID.
+ * \param small_packets_per_child_count Number of small packets parent is storing for each SED.
+ * \param big_packets_total_count Number of big packets parent can store for all SEDs.
+ *
+ * \return 0, OK.
+ * \return <0 fail.
+ */
+int thread_management_sed_parent_buffer_size_set(int8_t interface_id, uint16_t small_packets_per_child_count, uint16_t big_packets_total_count);
+
 #ifdef __cplusplus
 }
 #endif

source/6LoWPAN/Thread/thread_management_if.c

@@ -1452,3 +1452,27 @@ int thread_management_partition_weighting_set(int8_t interface_id, uint8_t parti
     return -1;
 #endif
 }
+
+int thread_management_sed_parent_buffer_size_set(int8_t interface_id, uint16_t small_packets_per_child_count, uint16_t big_packets_total_count)
+{
+    (void) interface_id;
+    (void) small_packets_per_child_count;
+    (void) big_packets_total_count;
+#ifdef HAVE_THREAD
+    protocol_interface_info_entry_t *cur;
+
+    cur = protocol_stack_interface_info_get_by_id(interface_id);
+    if (!cur || !cur->thread_info) {
+        tr_debug("Invalid interface id");
+        return -1;
+    }
+
+    return lowpan_adaptation_indirect_queue_params_set(cur,
+        THREAD_INDIRECT_BIG_PACKET_THRESHOLD,
+        big_packets_total_count,
+        small_packets_per_child_count);
+
+#else
+    return -1;
+#endif
+}