| 1 | /** @file
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| 2 | * PDM - Pluggable Device Manager, Network Interfaces.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2022 Oracle Corporation
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License (GPL) as published by the Free Software
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| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | *
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| 16 | * The contents of this file may alternatively be used under the terms
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| 17 | * of the Common Development and Distribution License Version 1.0
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| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 19 | * VirtualBox OSE distribution, in which case the provisions of the
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| 20 | * CDDL are applicable instead of those of the GPL.
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| 21 | *
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| 22 | * You may elect to license modified versions of this file under the
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| 23 | * terms and conditions of either the GPL or the CDDL or both.
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| 24 | */
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| 25 |
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| 26 | #ifndef VBOX_INCLUDED_vmm_pdmnetifs_h
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| 27 | #define VBOX_INCLUDED_vmm_pdmnetifs_h
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| 28 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 29 | # pragma once
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| 30 | #endif
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| 31 |
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| 32 | #include <VBox/types.h>
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| 33 |
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| 34 |
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| 35 | RT_C_DECLS_BEGIN
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| 36 |
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| 37 | /** @defgroup grp_pdm_ifs_net PDM Network Interfaces
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| 38 | * @ingroup grp_pdm_interfaces
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| 39 | * @{
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| 40 | */
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| 41 |
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| 42 |
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| 43 | /**
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| 44 | * PDM scatter/gather buffer.
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| 45 | *
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| 46 | * @todo Promote this to VBox/types.h, VBox/vmm/pdmcommon.h or some such place.
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| 47 | */
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| 48 | typedef struct PDMSCATTERGATHER
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| 49 | {
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| 50 | /** Flags. */
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| 51 | size_t fFlags;
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| 52 | /** The number of bytes used.
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| 53 | * This is cleared on alloc and set by the user. */
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| 54 | size_t cbUsed;
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| 55 | /** The number of bytes available.
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| 56 | * This is set on alloc and not changed by the user. */
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| 57 | size_t cbAvailable;
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| 58 | /** Private data member for the allocator side. */
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| 59 | void *pvAllocator;
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| 60 | /** Private data member for the user side. */
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| 61 | void *pvUser;
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| 62 | /** The number of segments
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| 63 | * This is set on alloc and not changed by the user. */
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| 64 | size_t cSegs;
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| 65 | /** Variable sized array of segments. */
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| 66 | PDMDATASEG aSegs[1];
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| 67 | } PDMSCATTERGATHER;
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| 68 | /** Pointer to a PDM scatter/gather buffer. */
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| 69 | typedef PDMSCATTERGATHER *PPDMSCATTERGATHER;
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| 70 | /** Pointer to a PDM scatter/gather buffer pointer. */
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| 71 | typedef PPDMSCATTERGATHER *PPPDMSCATTERGATHER;
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| 72 |
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| 73 |
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| 74 | /** @name PDMSCATTERGATHER::fFlags
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| 75 | * @{ */
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| 76 | /** Magic value. */
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| 77 | #define PDMSCATTERGATHER_FLAGS_MAGIC UINT32_C(0xb1b10000)
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| 78 | /** Magic mask. */
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| 79 | #define PDMSCATTERGATHER_FLAGS_MAGIC_MASK UINT32_C(0xffff0000)
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| 80 | /** Owned by owner number 1. */
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| 81 | #define PDMSCATTERGATHER_FLAGS_OWNER_1 UINT32_C(0x00000001)
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| 82 | /** Owned by owner number 2. */
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| 83 | #define PDMSCATTERGATHER_FLAGS_OWNER_2 UINT32_C(0x00000002)
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| 84 | /** Owned by owner number 3. */
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| 85 | #define PDMSCATTERGATHER_FLAGS_OWNER_3 UINT32_C(0x00000002)
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| 86 | /** Owner mask. */
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| 87 | #define PDMSCATTERGATHER_FLAGS_OWNER_MASK UINT32_C(0x00000003)
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| 88 | /** Mask of flags available to general use.
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| 89 | * The parties using the SG must all agree upon how to use these of course. */
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| 90 | #define PDMSCATTERGATHER_FLAGS_AVL_MASK UINT32_C(0x0000f000)
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| 91 | /** Flags reserved for future use, MBZ. */
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| 92 | #define PDMSCATTERGATHER_FLAGS_RVD_MASK UINT32_C(0x00000ff8)
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| 93 | /** @} */
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| 94 |
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| 95 |
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| 96 | /**
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| 97 | * Sets the owner of a scatter/gather buffer.
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| 98 | *
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| 99 | * @param pSgBuf .
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| 100 | * @param uNewOwner The new owner.
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| 101 | */
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| 102 | DECLINLINE(void) PDMScatterGatherSetOwner(PPDMSCATTERGATHER pSgBuf, uint32_t uNewOwner)
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| 103 | {
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| 104 | pSgBuf->fFlags = (pSgBuf->fFlags & ~PDMSCATTERGATHER_FLAGS_OWNER_MASK) | uNewOwner;
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| 105 | }
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| 106 |
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| 107 |
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| 108 |
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| 109 | /** Pointer to a network port interface */
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| 110 | typedef struct PDMINETWORKDOWN *PPDMINETWORKDOWN;
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| 111 | /**
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| 112 | * Network port interface (down).
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| 113 | * Pair with PDMINETWORKUP.
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| 114 | */
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| 115 | typedef struct PDMINETWORKDOWN
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| 116 | {
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| 117 | /**
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| 118 | * Wait until there is space for receiving data. We do not care how much space is available
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| 119 | * because pfnReceive() will re-check and notify the guest if necessary.
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| 120 | *
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| 121 | * This function must be called before the pfnRecieve() method is called.
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| 122 | *
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| 123 | * @returns VBox status code. VINF_SUCCESS means there is at least one receive descriptor available.
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| 124 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 125 | * @param cMillies Number of milliseconds to wait. 0 means return immediately.
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| 126 | *
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| 127 | * @thread Non-EMT.
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| 128 | */
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| 129 | DECLR3CALLBACKMEMBER(int, pfnWaitReceiveAvail,(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies));
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| 130 |
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| 131 | /**
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| 132 | * Receive data from the network.
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| 133 | *
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| 134 | * @returns VBox status code.
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| 135 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 136 | * @param pvBuf The available data.
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| 137 | * @param cb Number of bytes available in the buffer.
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| 138 | *
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| 139 | * @thread Non-EMT.
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| 140 | */
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| 141 | DECLR3CALLBACKMEMBER(int, pfnReceive,(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb));
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| 142 |
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| 143 | /**
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| 144 | * Receive data with segmentation context from the network.
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| 145 | *
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| 146 | * @returns VBox status code.
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| 147 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 148 | * @param pvBuf The available data.
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| 149 | * @param cb Number of bytes available in the buffer.
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| 150 | * @param pGso Segmentation context.
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| 151 | *
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| 152 | * @thread Non-EMT.
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| 153 | */
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| 154 | DECLR3CALLBACKMEMBER(int, pfnReceiveGso,(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb, PCPDMNETWORKGSO pGso));
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| 155 |
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| 156 | /**
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| 157 | * Do pending transmit work on the leaf driver's XMIT thread.
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| 158 | *
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| 159 | * When a PDMINETWORKUP::pfnBeginTransmit or PDMINETWORKUP::pfnAllocBuf call
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| 160 | * fails with VERR_TRY_AGAIN, the leaf drivers XMIT thread will offer to process
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| 161 | * the upstream device/driver when the the VERR_TRY_AGAIN condition has been
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| 162 | * removed. In some cases the VERR_TRY_AGAIN condition is simply being in an
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| 163 | * inconvenient context and the XMIT thread will start working ASAP.
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| 164 | *
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| 165 | * @param pInterface Pointer to this interface.
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| 166 | * @thread Non-EMT.
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| 167 | */
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| 168 | DECLR3CALLBACKMEMBER(void, pfnXmitPending,(PPDMINETWORKDOWN pInterface));
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| 169 |
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| 170 | } PDMINETWORKDOWN;
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| 171 | /** PDMINETWORKDOWN interface ID. */
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| 172 | #define PDMINETWORKDOWN_IID "52b8cdbb-a087-493b-baa7-81ec3b803e06"
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| 173 |
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| 174 |
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| 175 | /**
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| 176 | * Network link state.
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| 177 | */
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| 178 | typedef enum PDMNETWORKLINKSTATE
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| 179 | {
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| 180 | /** Invalid state. */
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| 181 | PDMNETWORKLINKSTATE_INVALID = 0,
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| 182 | /** The link is up. */
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| 183 | PDMNETWORKLINKSTATE_UP,
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| 184 | /** The link is down. */
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| 185 | PDMNETWORKLINKSTATE_DOWN,
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| 186 | /** The link is temporarily down while resuming. */
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| 187 | PDMNETWORKLINKSTATE_DOWN_RESUME
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| 188 | } PDMNETWORKLINKSTATE;
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| 189 |
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| 190 |
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| 191 | /** Pointer to a network connector interface */
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| 192 | typedef R3PTRTYPE(struct PDMINETWORKUP *) PPDMINETWORKUPR3;
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| 193 | /** Pointer to a network connector interface, ring-0 context. */
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| 194 | typedef R0PTRTYPE(struct PDMINETWORKUPR0 *) PPDMINETWORKUPR0;
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| 195 | /** Pointer to a network connector interface, raw-mode context. */
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| 196 | typedef RCPTRTYPE(struct PDMINETWORKUPRC *) PPDMINETWORKUPRC;
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| 197 | /** Pointer to a current context network connector interface. */
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| 198 | typedef CTX_SUFF(PPDMINETWORKUP) PPDMINETWORKUP;
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| 199 |
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| 200 | /**
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| 201 | * Network connector interface (up).
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| 202 | * Pair with PDMINETWORKDOWN.
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| 203 | */
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| 204 | typedef struct PDMINETWORKUP
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| 205 | {
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| 206 | /**
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| 207 | * Begins a transmit session.
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| 208 | *
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| 209 | * The leaf driver guarantees that there are no concurrent sessions.
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| 210 | *
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| 211 | * @retval VINF_SUCCESS on success. Must always call
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| 212 | * PDMINETWORKUP::pfnEndXmit.
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| 213 | * @retval VERR_TRY_AGAIN if there is already an open transmit session or some
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| 214 | * important resource was unavailable (like buffer space). If it's a
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| 215 | * resources issue, the driver will signal its XMIT thread and have it
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| 216 | * work the device thru the PDMINETWORKDOWN::pfnNotifyBufAvailable
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| 217 | * callback method.
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| 218 | *
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| 219 | * @param pInterface Pointer to the interface structure containing the
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| 220 | * called function pointer.
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| 221 | * @param fOnWorkerThread Set if we're being called on a work thread. Clear
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| 222 | * if an EMT.
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| 223 | *
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| 224 | * @thread Any, but normally EMT or the XMIT thread.
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| 225 | */
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| 226 | DECLR3CALLBACKMEMBER(int, pfnBeginXmit,(PPDMINETWORKUP pInterface, bool fOnWorkerThread));
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| 227 |
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| 228 | /**
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| 229 | * Get a send buffer for passing to pfnSendBuf.
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| 230 | *
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| 231 | * @retval VINF_SUCCESS on success.
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| 232 | * @retval VERR_TRY_AGAIN if temporarily out of buffer space. After this
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| 233 | * happens, the driver will call PDMINETWORKDOWN::pfnNotifyBufAvailable
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| 234 | * when this is a buffer of the required size available.
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| 235 | * @retval VERR_NO_MEMORY if really out of buffer space.
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| 236 | * @retval VERR_NET_DOWN if we cannot send anything to the network at this
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| 237 | * point in time. Drop the frame with a xmit error. This is typically
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| 238 | * only seen when pausing the VM since the device keeps the link state,
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| 239 | * but there could of course be races.
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| 240 | *
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| 241 | * @param pInterface Pointer to the interface structure containing the
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| 242 | * called function pointer.
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| 243 | * @param cbMin The minimum buffer size.
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| 244 | * @param pGso Pointer to a GSO context (only reference while in
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| 245 | * this call). NULL indicates no segmentation
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| 246 | * offloading. PDMSCATTERGATHER::pvUser is used to
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| 247 | * indicate that a network SG uses GSO, usually by
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| 248 | * pointing to a copy of @a pGso.
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| 249 | * @param ppSgBuf Where to return the buffer. The buffer will be
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| 250 | * owned by the caller, designation owner number 1.
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| 251 | *
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| 252 | * @thread Any, but normally EMT or the XMIT thread.
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| 253 | */
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| 254 | DECLR3CALLBACKMEMBER(int, pfnAllocBuf,(PPDMINETWORKUP pInterface, size_t cbMin, PCPDMNETWORKGSO pGso,
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| 255 | PPPDMSCATTERGATHER ppSgBuf));
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| 256 |
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| 257 | /**
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| 258 | * Frees an unused buffer.
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| 259 | *
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| 260 | * @retval VINF_SUCCESS on success.
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| 261 | *
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| 262 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 263 | * @param pSgBuf A buffer from PDMINETWORKUP::pfnAllocBuf or
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| 264 | * PDMINETWORKDOWN::pfnNotifyBufAvailable. The buffer
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| 265 | * ownership shall be 1.
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| 266 | *
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| 267 | * @thread Any, but normally EMT or the XMIT thread.
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| 268 | */
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| 269 | DECLR3CALLBACKMEMBER(int, pfnFreeBuf,(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf));
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| 270 |
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| 271 | /**
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| 272 | * Send data to the network.
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| 273 | *
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| 274 | * @retval VINF_SUCCESS on success.
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| 275 | * @retval VERR_NET_DOWN if the NIC is not connected to a network. pSgBuf will
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| 276 | * be freed.
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| 277 | * @retval VERR_NET_NO_BUFFER_SPACE if we're out of resources. pSgBuf will be
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| 278 | * freed.
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| 279 | *
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| 280 | * @param pInterface Pointer to the interface structure containing the
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| 281 | * called function pointer.
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| 282 | * @param pSgBuf The buffer containing the data to send. The buffer
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| 283 | * ownership shall be 1. The buffer will always be
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| 284 | * consumed, regardless of the status code.
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| 285 | *
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| 286 | * @param fOnWorkerThread Set if we're being called on a work thread. Clear
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| 287 | * if an EMT.
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| 288 | *
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| 289 | * @thread Any, but normally EMT or the XMIT thread.
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| 290 | */
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| 291 | DECLR3CALLBACKMEMBER(int, pfnSendBuf,(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread));
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| 292 |
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| 293 | /**
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| 294 | * Ends a transmit session.
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| 295 | *
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| 296 | * Pairs with successful PDMINETWORKUP::pfnBeginXmit calls.
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| 297 | *
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| 298 | * @param pInterface Pointer to the interface structure containing the
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| 299 | * called function pointer.
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| 300 | *
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| 301 | * @thread Any, but normally EMT or the XMIT thread.
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| 302 | */
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| 303 | DECLR3CALLBACKMEMBER(void, pfnEndXmit,(PPDMINETWORKUP pInterface));
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| 304 |
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| 305 | /**
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| 306 | * Set promiscuous mode.
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| 307 | *
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| 308 | * This is called when the promiscuous mode is set. This means that there doesn't have
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| 309 | * to be a mode change when it's called.
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| 310 | *
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| 311 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 312 | * @param fPromiscuous Set if the adaptor is now in promiscuous mode. Clear if it is not.
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| 313 | * @thread EMT ??
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| 314 | */
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| 315 | DECLR3CALLBACKMEMBER(void, pfnSetPromiscuousMode,(PPDMINETWORKUP pInterface, bool fPromiscuous));
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| 316 |
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| 317 | /**
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| 318 | * Notification on link status changes.
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| 319 | *
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| 320 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 321 | * @param enmLinkState The new link state.
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| 322 | * @thread EMT ??
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| 323 | */
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| 324 | DECLR3CALLBACKMEMBER(void, pfnNotifyLinkChanged,(PPDMINETWORKUP pInterface, PDMNETWORKLINKSTATE enmLinkState));
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| 325 |
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| 326 | /** @todo Add a callback that informs the driver chain about MAC address changes if we ever implement that. */
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| 327 |
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| 328 | } PDMINETWORKUP;
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| 329 |
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| 330 | /** Ring-0 edition of PDMINETWORKUP. */
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| 331 | typedef struct PDMINETWORKUPR0
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| 332 | {
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| 333 | /** @copydoc PDMINETWORKUP::pfnBeginXmit */
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| 334 | DECLR0CALLBACKMEMBER(int, pfnBeginXmit,(PPDMINETWORKUPR0 pInterface, bool fOnWorkerThread));
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| 335 | /** @copydoc PDMINETWORKUP::pfnAllocBuf */
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| 336 | DECLR0CALLBACKMEMBER(int, pfnAllocBuf,(PPDMINETWORKUPR0 pInterface, size_t cbMin, PCPDMNETWORKGSO pGso,
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| 337 | PPPDMSCATTERGATHER ppSgBuf));
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| 338 | /** @copydoc PDMINETWORKUP::pfnFreeBuf */
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| 339 | DECLR0CALLBACKMEMBER(int, pfnFreeBuf,(PPDMINETWORKUPR0 pInterface, PPDMSCATTERGATHER pSgBuf));
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| 340 | /** @copydoc PDMINETWORKUP::pfnSendBuf */
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| 341 | DECLR0CALLBACKMEMBER(int, pfnSendBuf,(PPDMINETWORKUPR0 pInterface, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread));
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| 342 | /** @copydoc PDMINETWORKUP::pfnEndXmit */
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| 343 | DECLR0CALLBACKMEMBER(void, pfnEndXmit,(PPDMINETWORKUPR0 pInterface));
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| 344 | /** @copydoc PDMINETWORKUP::pfnSetPromiscuousMode */
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| 345 | DECLR0CALLBACKMEMBER(void, pfnSetPromiscuousMode,(PPDMINETWORKUPR0 pInterface, bool fPromiscuous));
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| 346 | } PDMINETWORKUPR0;
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| 347 |
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| 348 | /** Raw-mode context edition of PDMINETWORKUP. */
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| 349 | typedef struct PDMINETWORKUPRC
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| 350 | {
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| 351 | /** @copydoc PDMINETWORKUP::pfnBeginXmit */
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| 352 | DECLRCCALLBACKMEMBER(int, pfnBeginXmit,(PPDMINETWORKUPRC pInterface, bool fOnWorkerThread));
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| 353 | /** @copydoc PDMINETWORKUP::pfnAllocBuf */
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| 354 | DECLRCCALLBACKMEMBER(int, pfnAllocBuf,(PPDMINETWORKUPRC pInterface, size_t cbMin, PCPDMNETWORKGSO pGso,
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| 355 | PPPDMSCATTERGATHER ppSgBuf));
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| 356 | /** @copydoc PDMINETWORKUP::pfnFreeBuf */
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| 357 | DECLRCCALLBACKMEMBER(int, pfnFreeBuf,(PPDMINETWORKUPRC pInterface, PPDMSCATTERGATHER pSgBuf));
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| 358 | /** @copydoc PDMINETWORKUP::pfnSendBuf */
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| 359 | DECLRCCALLBACKMEMBER(int, pfnSendBuf,(PPDMINETWORKUPRC pInterface, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread));
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| 360 | /** @copydoc PDMINETWORKUP::pfnEndXmit */
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| 361 | DECLRCCALLBACKMEMBER(void, pfnEndXmit,(PPDMINETWORKUPRC pInterface));
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| 362 | /** @copydoc PDMINETWORKUP::pfnSetPromiscuousMode */
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| 363 | DECLRCCALLBACKMEMBER(void, pfnSetPromiscuousMode,(PPDMINETWORKUPRC pInterface, bool fPromiscuous));
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| 364 | } PDMINETWORKUPRC;
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| 365 |
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| 366 | /** PDMINETWORKUP interface ID. */
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| 367 | #define PDMINETWORKUP_IID "67e7e7a8-2594-4649-a1e3-7cee680c6083"
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| 368 | /** PDMINETWORKUP interface method names. */
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| 369 | #define PDMINETWORKUP_SYM_LIST "BeginXmit;AllocBuf;FreeBuf;SendBuf;EndXmit;SetPromiscuousMode"
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| 370 |
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| 371 |
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| 372 | /** Pointer to a network config port interface */
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| 373 | typedef struct PDMINETWORKCONFIG *PPDMINETWORKCONFIG;
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| 374 | /**
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| 375 | * Network config port interface (main).
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| 376 | * No interface pair.
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| 377 | */
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| 378 | typedef struct PDMINETWORKCONFIG
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| 379 | {
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| 380 | /**
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| 381 | * Gets the current Media Access Control (MAC) address.
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| 382 | *
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| 383 | * @returns VBox status code.
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| 384 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 385 | * @param pMac Where to store the MAC address.
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| 386 | * @thread EMT
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| 387 | */
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| 388 | DECLR3CALLBACKMEMBER(int, pfnGetMac,(PPDMINETWORKCONFIG pInterface, PRTMAC pMac));
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| 389 |
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| 390 | /**
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| 391 | * Gets the new link state.
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| 392 | *
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| 393 | * @returns The current link state.
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| 394 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 395 | * @thread EMT
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| 396 | */
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| 397 | DECLR3CALLBACKMEMBER(PDMNETWORKLINKSTATE, pfnGetLinkState,(PPDMINETWORKCONFIG pInterface));
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| 398 |
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| 399 | /**
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| 400 | * Sets the new link state.
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| 401 | *
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| 402 | * @returns VBox status code.
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| 403 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 404 | * @param enmState The new link state
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| 405 | * @thread EMT
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| 406 | */
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| 407 | DECLR3CALLBACKMEMBER(int, pfnSetLinkState,(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState));
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| 408 |
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| 409 | } PDMINETWORKCONFIG;
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| 410 | /** PDMINETWORKCONFIG interface ID. */
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| 411 | #define PDMINETWORKCONFIG_IID "d6d909e8-716d-415d-b109-534e4478ff4e"
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| 412 |
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| 413 |
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| 414 | /** Pointer to a NAT configuration port. */
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| 415 | typedef struct PDMINETWORKNATCONFIG *PPDMINETWORKNATCONFIG;
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| 416 | /**
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| 417 | * Network config port interface (main).
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| 418 | * No interface pair.
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| 419 | */
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| 420 | typedef struct PDMINETWORKNATCONFIG
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| 421 | {
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| 422 | /**
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| 423 | * Inform NAT about the adding/removing redirection rule
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| 424 | *
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| 425 | * @todo D O C U M E N T M E !
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| 426 | * @todo s/u16/u/g
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| 427 | */
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| 428 | DECLR3CALLBACKMEMBER(int, pfnRedirectRuleCommand ,(PPDMINETWORKNATCONFIG pInterface, bool fRemove,
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| 429 | bool fUdp, const char *pHostIp, uint16_t u16HostPort,
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| 430 | const char *pGuestIp, uint16_t u16GuestPort));
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| 431 | /**
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| 432 | * Inform NAT about host DNS settings change.
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|---|
| 433 | *
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| 434 | * IHostNameResolutionConfigurationChangeEvent.
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| 435 | */
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| 436 | DECLR3CALLBACKMEMBER(void, pfnNotifyDnsChanged, (PPDMINETWORKNATCONFIG pInterface));
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| 437 |
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| 438 | } PDMINETWORKNATCONFIG;
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| 439 | /** PDMINETWORKNATCONFIG interface ID. */
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| 440 | #define PDMINETWORKNATCONFIG_IID "dc961028-3523-4b52-a93b-e38168a4a9fa"
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| 441 | /** @} */
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| 442 |
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| 443 | RT_C_DECLS_END
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| 444 |
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| 445 | #endif /* !VBOX_INCLUDED_vmm_pdmnetifs_h */
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| 446 |
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