From 56d3a469b286e97f007ae5ea6dd061f19dc485a1 Mon Sep 17 00:00:00 2001
From: Abtin Keshavarzian <abtink@google.com>
Date: Fri, 8 Nov 2019 15:34:42 -0800
Subject: [PATCH] [mac-types] add Mac::ExtendedPanId::Clear() method (#4315)

---
 src/core/mac/mac.cpp       | 2 +-
 src/core/mac/mac_types.hpp | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/core/mac/mac.cpp b/src/core/mac/mac.cpp
index 774dba5e0..c97a59ae5 100644
--- a/src/core/mac/mac.cpp
+++ b/src/core/mac/mac.cpp
@@ -122,7 +122,7 @@ Mac::Mac(Instance &aInstance)
 
     mCcaSuccessRateTracker.Reset();
     memset(&mCounters, 0, sizeof(otMacCounters));
-    memset(&mExtendedPanId, 0, sizeof(ExtendedPanId));
+    mExtendedPanId.Clear();
 
     mSubMac.Enable();
 
diff --git a/src/core/mac/mac_types.hpp b/src/core/mac/mac_types.hpp
index ef8434a7c..6be11de13 100644
--- a/src/core/mac/mac_types.hpp
+++ b/src/core/mac/mac_types.hpp
@@ -461,6 +461,12 @@ public:
      */
     typedef String<kInfoStringSize> InfoString;
 
+    /**
+     * This method clears the Extended PAN Identifier (sets all bytes to zero).
+     *
+     */
+    void Clear(void) { memset(this, 0, sizeof(*this)); }
+
     /**
      * This method evaluates whether or not the Extended PAN Identifiers match.
      *