From 1582d32a4edf108fb748dd94577bdb943f871229 Mon Sep 17 00:00:00 2001
From: Abtin Keshavarzian <abtink@google.com>
Date: Tue, 6 Jun 2017 11:30:25 -0700
Subject: [PATCH] Adding `mNextHopIsDevice` to `otExternalRouteConfig` (#1878)

This commit adds a new field in `otExternalRouteConfig` to indicate
if for the external route entry, the next hop is the device itself.
---
 include/openthread/types.h       | 9 +++++++++
 src/core/thread/network_data.cpp | 1 +
 2 files changed, 10 insertions(+)

diff --git a/include/openthread/types.h b/include/openthread/types.h
index 95e84cfa5..7b7b20151 100644
--- a/include/openthread/types.h
+++ b/include/openthread/types.h
@@ -743,6 +743,15 @@ typedef struct otExternalRouteConfig
      * TRUE, if this configuration is considered Stable Network Data.  FALSE, otherwise.
      */
     bool mStable : 1;
+
+    /**
+     * TRUE if the external route entry's next hop is this device itself (i.e., the route was added earlier by this
+     * device). FALSE otherwise.
+     *
+     * This value is ignored when adding an external route. For any added route the next hop is this device.
+     */
+    bool mNextHopIsThisDevice : 1;
+
 } otExternalRouteConfig;
 
 /**
diff --git a/src/core/thread/network_data.cpp b/src/core/thread/network_data.cpp
index 1a5261927..8e1526fee 100644
--- a/src/core/thread/network_data.cpp
+++ b/src/core/thread/network_data.cpp
@@ -202,6 +202,7 @@ otError NetworkData::GetNextExternalRoute(otNetworkDataIterator *aIterator, uint
         aConfig->mPrefix.mLength = prefix->GetPrefixLength();
         aConfig->mPreference = hasRouteEntry->GetPreference();
         aConfig->mStable = cur->IsStable();
+        aConfig->mNextHopIsThisDevice = (hasRouteEntry->GetRloc() == mNetif.GetMle().GetRloc16());
 
         *aIterator = static_cast<otNetworkDataIterator>(reinterpret_cast<uint8_t *>(cur->GetNext()) - mTlvs);