From cfdab91f44cfca9a60dc1aa0b9192b0bf3784d42 Mon Sep 17 00:00:00 2001
From: Abtin Keshavarzian <abtink@google.com>
Date: Fri, 12 Jan 2018 09:10:34 -0800
Subject: [PATCH] [ncp] add a vendor hook to  notify when a frame is sent and
 removed (#2468)

---
 src/ncp/ncp_base.cpp | 4 ++++
 src/ncp/ncp_base.hpp | 1 +
 2 files changed, 5 insertions(+)

diff --git a/src/ncp/ncp_base.cpp b/src/ncp/ncp_base.cpp
index 865aa6225..692148c54 100644
--- a/src/ncp/ncp_base.cpp
+++ b/src/ncp/ncp_base.cpp
@@ -706,6 +706,10 @@ void NcpBase::HandleFrameRemovedFromNcpBuffer(NcpFrameBuffer::FrameTag aFrameTag
 
     SuccessOrExit(SendQueuedResponses());
 
+#if OPENTHREAD_ENABLE_NCP_VENDOR_HOOK
+    VendorHandleFrameRemovedFromNcpBuffer(aFrameTag);
+#endif
+
     // Check if `HOST_POWER_STATE` property update is required.
 
     if (mHostPowerStateHeader)
diff --git a/src/ncp/ncp_base.hpp b/src/ncp/ncp_base.hpp
index 8b6f1f0cc..caeebdb8a 100644
--- a/src/ncp/ncp_base.hpp
+++ b/src/ncp/ncp_base.hpp
@@ -293,6 +293,7 @@ protected:
 
 #if OPENTHREAD_ENABLE_NCP_VENDOR_HOOK
     otError VendorCommandHandler(uint8_t aHeader, unsigned int aCommand);
+    void VendorHandleFrameRemovedFromNcpBuffer(NcpFrameBuffer::FrameTag aFrameTag);
 #endif // OPENTHREAD_ENABLE_NCP_VENDOR_HOOK
 
     otError CommandHandler_NOOP(uint8_t aHeader);