From c7925dd1dfdd1038a6b9f1d8ac5d0c154ff35329 Mon Sep 17 00:00:00 2001
From: doru91 <doru-cristian.gucea@nxp.com>
Date: Wed, 22 Mar 2023 02:28:42 +0200
Subject: [PATCH] [dua] avoid unnecessary time ticker processing (#8872)

If there is no DUA request sent/scheduled, then there is no need to
trigger the periodic one second ticker timer.

This helps SEDs to be more power efficient and to avoid unnecessary
wakeups.

Signed-off-by: Doru Gucea <doru-cristian.gucea@nxp.com>
---
 src/core/thread/dua_manager.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/core/thread/dua_manager.cpp b/src/core/thread/dua_manager.cpp
index 4b4ce1bf1..f0e09e426 100644
--- a/src/core/thread/dua_manager.cpp
+++ b/src/core/thread/dua_manager.cpp
@@ -345,7 +345,12 @@ void DuaManager::HandleBackboneRouterPrimaryUpdate(BackboneRouter::Leader::State
 
     if (aState == BackboneRouter::Leader::kStateAdded || aState == BackboneRouter::Leader::kStateToTriggerRereg)
     {
-        UpdateReregistrationDelay();
+#if OPENTHREAD_CONFIG_DUA_ENABLE
+        if (Get<Mle::Mle>().IsFullThreadDevice() || Get<Mle::Mle>().GetParent().IsThreadVersion1p1())
+#endif
+        {
+            UpdateReregistrationDelay();
+        }
     }
 }