diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index eb824de..668a51a 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -3074,6 +3074,13 @@
     return binder::Status::ok();
 }
 
+Status CameraService::reportExtensionSessionStats(
+        const hardware::CameraExtensionSessionStats& stats, String16* sessionKey /*out*/) {
+    ALOGV("%s: reported %s", __FUNCTION__, stats.toString().c_str());
+    *sessionKey = mCameraServiceProxyWrapper->updateExtensionStats(stats);
+    return Status::ok();
+}
+
 void CameraService::removeByClient(const BasicClient* client) {
     Mutex::Autolock lock(mServiceLock);
     for (auto& i : mActiveClientManager.getAll()) {
diff --git a/services/camera/libcameraservice/CameraService.h b/services/camera/libcameraservice/CameraService.h
index d84cb00..3214d4c 100644
--- a/services/camera/libcameraservice/CameraService.h
+++ b/services/camera/libcameraservice/CameraService.h
@@ -218,6 +218,9 @@
             /*out*/
             sp<hardware::camera2::ICameraInjectionSession>* cameraInjectionSession);
 
+    virtual binder::Status reportExtensionSessionStats(
+            const hardware::CameraExtensionSessionStats& stats, String16* sessionKey /*out*/);
+
     // Extra permissions checks
     virtual status_t    onTransact(uint32_t code, const Parcel& data,
                                    Parcel* reply, uint32_t flags);
diff --git a/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.cpp b/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.cpp
index af5f3ee..3aff2ac 100644
--- a/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.cpp
+++ b/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.cpp
@@ -26,8 +26,14 @@
 
 namespace android {
 
-using hardware::ICameraServiceProxy;
+using hardware::CameraExtensionSessionStats;
 using hardware::CameraSessionStats;
+using hardware::ICameraServiceProxy;
+
+namespace {
+// Sentinel value to be returned when extension session with a stale or invalid key is reported.
+const String16 POISON_EXT_STATS_KEY("poisoned_stats");
+} // anonymous namespace
 
 /**
  * CameraSessionStatsWrapper functions
@@ -97,10 +103,12 @@
     mSessionStats.mUserTag = String16(userTag.c_str());
     mSessionStats.mVideoStabilizationMode = videoStabilizationMode;
     mSessionStats.mStreamStats = streamStats;
+
     updateProxyDeviceState(proxyBinder);
 
     mSessionStats.mInternalReconfigure = 0;
     mSessionStats.mStreamStats.clear();
+    mSessionStats.mCameraExtensionSessionStats = {};
 }
 
 int64_t CameraServiceProxyWrapper::CameraSessionStatsWrapper::getLogId() {
@@ -108,6 +116,65 @@
     return mSessionStats.mLogId;
 }
 
+String16 CameraServiceProxyWrapper::CameraSessionStatsWrapper::updateExtensionSessionStats(
+        const hardware::CameraExtensionSessionStats& extStats) {
+    Mutex::Autolock l(mLock);
+    CameraExtensionSessionStats& currStats = mSessionStats.mCameraExtensionSessionStats;
+    if (currStats.key != extStats.key) {
+        // Mismatched keys. Extensions stats likely reported for a closed session
+        ALOGW("%s: mismatched extensions stats key: current='%s' reported='%s'. Dropping stats.",
+              __FUNCTION__, String8(currStats.key).c_str(), String8(extStats.key).c_str());
+        return POISON_EXT_STATS_KEY; // return poisoned key to so future calls are
+                                     // definitely dropped.
+    }
+
+    // Matching keys...
+    if (currStats.key.size()) {
+        // non-empty matching keys. overwrite.
+        ALOGV("%s: Overwriting extension session stats: %s", __FUNCTION__,
+              extStats.toString().c_str());
+        currStats = extStats;
+        return currStats.key;
+    }
+
+    // Matching empty keys...
+    if (mSessionStats.mClientName != extStats.clientName) {
+        ALOGW("%s: extension stats reported for unexpected package: current='%s' reported='%s'. "
+              "Dropping stats.", __FUNCTION__,
+              String8(mSessionStats.mClientName).c_str(),
+              String8(extStats.clientName).c_str());
+        return POISON_EXT_STATS_KEY;
+    }
+
+    // Matching empty keys for the current client...
+    if (mSessionStats.mNewCameraState == CameraSessionStats::CAMERA_STATE_OPEN ||
+        mSessionStats.mNewCameraState == CameraSessionStats::CAMERA_STATE_IDLE) {
+        // Camera is open, but not active. It is possible that the active callback hasn't
+        // occurred yet. Keep the stats, but don't associate it with any session.
+        ALOGV("%s: extension stat reported for an open, but not active camera. "
+              "Saving stats, but not generating key.", __FUNCTION__);
+        currStats = extStats;
+        return {}; // Subsequent calls will handle setting the correct key.
+    }
+
+    if (mSessionStats.mNewCameraState == CameraSessionStats::CAMERA_STATE_ACTIVE) {
+        // camera is active. First call for the session!
+        currStats = extStats;
+
+        // Generate a new key from logId and sessionIndex.
+        std::ostringstream key;
+        key << mSessionStats.mSessionIndex << '/' << mSessionStats.mLogId;
+        currStats.key = String16(key.str().c_str());
+        ALOGV("%s: New extension session stats: %s", __FUNCTION__, currStats.toString().c_str());
+        return currStats.key;
+    }
+
+    // Camera is closed. Probably a stale call.
+    ALOGW("%s: extension stats reported for closed camera id '%s'. Dropping stats.",
+          __FUNCTION__, String8(mSessionStats.mCameraId).c_str());
+    return {};
+}
+
 /**
  * CameraServiceProxyWrapper functions
  */
@@ -337,4 +404,21 @@
     return ret;
 }
 
+String16 CameraServiceProxyWrapper::updateExtensionStats(
+        const hardware::CameraExtensionSessionStats& extStats) {
+    std::shared_ptr<CameraSessionStatsWrapper> stats;
+    String8 cameraId = String8(extStats.cameraId);
+    {
+        Mutex::Autolock _l(mLock);
+        if (mSessionStatsMap.count(cameraId) == 0) {
+            ALOGE("%s CameraExtensionSessionStats reported for camera id that isn't open: %s",
+                  __FUNCTION__, cameraId.c_str());
+            return {};
+        }
+
+        stats = mSessionStatsMap[cameraId];
+        return stats->updateExtensionSessionStats(extStats);
+    }
+}
+
 }  // namespace android
diff --git a/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.h b/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.h
index d47c738..e32580c 100644
--- a/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.h
+++ b/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.h
@@ -65,6 +65,8 @@
                 const std::string& userTag, int32_t videoStabilizationMode,
                 const std::vector<hardware::CameraStreamStats>& streamStats);
 
+        String16 updateExtensionSessionStats(const hardware::CameraExtensionSessionStats& extStats);
+
         // Returns the logId associated with this event.
         int64_t getLogId();
     };
@@ -127,6 +129,9 @@
     // frameworks/av/camera/include/camera/CameraSessionStats.h for more details about this
     // identifier. Returns a non-0 value on success.
     int64_t getCurrentLogIdForCamera(const String8& cameraId);
+
+    // Update the stored extension stats to the latest values
+    String16 updateExtensionStats(const hardware::CameraExtensionSessionStats& extStats);
 };
 
 } // android