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diff --git a/include/VBox/vmm/pdmnetshaper.h b/include/VBox/vmm/pdmnetshaper.h
new file mode 100644
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+++ b/include/VBox/vmm/pdmnetshaper.h
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+/** @file
+ * PDM - Pluggable Device Manager, Network Shaper.
+ */
+
+/*
+ * Copyright (C) 2011-2020 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+#ifndef VBOX_INCLUDED_vmm_pdmnetshaper_h
+#define VBOX_INCLUDED_vmm_pdmnetshaper_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <VBox/types.h>
+#include <VBox/vmm/pdmnetifs.h>
+#include <iprt/sg.h>
+
+
+/** @defgroup grp_pdm_net_shaper  The PDM Network Shaper API
+ * @ingroup grp_pdm
+ * @{
+ */
+
+
+#define PDM_NETSHAPER_MIN_BUCKET_SIZE UINT32_C(65536) /**< bytes */
+#define PDM_NETSHAPER_MAX_LATENCY     UINT32_C(100)   /**< milliseconds */
+
+RT_C_DECLS_BEGIN
+
+typedef struct PDMNSFILTER
+{
+    /** Pointer to the next group in the list (ring-3). */
+    R3PTRTYPE(struct PDMNSFILTER *)     pNextR3;
+    /** Pointer to the bandwidth group (ring-3). */
+    R3PTRTYPE(struct PDMNSBWGROUP *)    pBwGroupR3;
+    /** Pointer to the bandwidth group (ring-0). */
+    R0PTRTYPE(struct PDMNSBWGROUP *)    pBwGroupR0;
+    /** Set when the filter fails to obtain bandwidth. */
+    bool                                fChoked;
+    /** Aligment padding. */
+    bool                                afPadding[HC_ARCH_BITS == 32 ? 3 : 7];
+    /** The driver this filter is aggregated into (ring-3). */
+    R3PTRTYPE(PPDMINETWORKDOWN)         pIDrvNetR3;
+} PDMNSFILTER;
+
+VMMDECL(bool)       PDMNsAllocateBandwidth(PPDMNSFILTER pFilter, size_t cbTransfer);
+VMMR3_INT_DECL(int) PDMR3NsAttach(PUVM pUVM, PPDMDRVINS pDrvIns, const char *pcszBwGroup, PPDMNSFILTER pFilter);
+VMMR3_INT_DECL(int) PDMR3NsDetach(PUVM pUVM, PPDMDRVINS pDrvIns, PPDMNSFILTER pFilter);
+VMMR3DECL(int)      PDMR3NsBwGroupSetLimit(PUVM pUVM, const char *pszBwGroup, uint64_t cbPerSecMax);
+
+/** @} */
+
+RT_C_DECLS_END
+
+#endif /* !VBOX_INCLUDED_vmm_pdmnetshaper_h */
+