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/** @file
* PDM - Pluggable Device Manager, Network Shaper.
*/
/*
* Copyright (C) 2011-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#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/list.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
/**
* A network shaper filter entry.
*
* This is used by DrvNetShaper and any similar drivers.
*/
typedef struct PDMNSFILTER
{
/** Entry in the group's filter list.
* Both members are NULL when not associated with a group. */
RTLISTNODER3 ListEntry;
/** The group index + 1.
* @note For safety reasons the value zero is invalid and this is 1-based
* (like pascal) rather than 0-based indexing.
* @note Volatile to prevent re-reading after validation. */
uint32_t volatile iGroup;
/** Set when the filter fails to obtain bandwidth.
* This will then cause pIDrvNetR3 to be called before long. */
bool fChoked;
/** Aligment padding. */
bool afPadding[3];
/** The driver this filter is aggregated into (ring-3). */
R3PTRTYPE(PPDMINETWORKDOWN) pIDrvNetR3;
} PDMNSFILTER;
VMM_INT_DECL(bool) PDMNetShaperAllocateBandwidth(PVMCC pVM, PPDMNSFILTER pFilter, size_t cbTransfer);
VMMR3_INT_DECL(int) PDMR3NsAttach(PVM pVM, PPDMDRVINS pDrvIns, const char *pszName, PPDMNSFILTER pFilter);
VMMR3_INT_DECL(int) PDMR3NsDetach(PVM pVM, PPDMDRVINS pDrvIns, PPDMNSFILTER pFilter);
VMMR3DECL(int) PDMR3NsBwGroupSetLimit(PUVM pUVM, const char *pszName, uint64_t cbPerSecMax);
/** @} */
RT_C_DECLS_END
#endif /* !VBOX_INCLUDED_vmm_pdmnetshaper_h */
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