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diff --git a/src/VBox/VMM/include/PDMNetShaperInternal.h b/src/VBox/VMM/include/PDMNetShaperInternal.h
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+/* $Id: PDMNetShaperInternal.h $ */
+/** @file
+ * PDM Network Shaper - Internal data structures and functions common for both R0 and R3 parts.
+ */
+
+/*
+ * Copyright (C) 2011-2019 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.
+ */
+
+#ifndef VMM_INCLUDED_SRC_include_PDMNetShaperInternal_h
+#define VMM_INCLUDED_SRC_include_PDMNetShaperInternal_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+/**
+ * Bandwidth group instance data
+ */
+typedef struct PDMNSBWGROUP
+{
+ /** Pointer to the next group in the list. */
+ R3PTRTYPE(struct PDMNSBWGROUP *) pNextR3;
+ /** Pointer to the shared UVM structure. */
+ R3PTRTYPE(struct PDMNETSHAPER *) pShaperR3;
+ /** Critical section protecting all members below. */
+ PDMCRITSECT Lock;
+ /** Pointer to the first filter attached to this group. */
+ R3PTRTYPE(struct PDMNSFILTER *) pFiltersHeadR3;
+ /** Bandwidth group name. */
+ R3PTRTYPE(char *) pszNameR3;
+ /** Maximum number of bytes filters are allowed to transfer. */
+ volatile uint64_t cbPerSecMax;
+ /** Number of bytes we are allowed to transfer in one burst. */
+ volatile uint32_t cbBucket;
+ /** Number of bytes we were allowed to transfer at the last update. */
+ volatile uint32_t cbTokensLast;
+ /** Timestamp of the last update */
+ volatile uint64_t tsUpdatedLast;
+ /** Reference counter - How many filters are associated with this group. */
+ volatile uint32_t cRefs;
+} PDMNSBWGROUP;
+/** Pointer to a bandwidth group. */
+typedef PDMNSBWGROUP *PPDMNSBWGROUP;
+
+#endif /* !VMM_INCLUDED_SRC_include_PDMNetShaperInternal_h */
+