| 1 | /** @file
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| 2 | * PDM - Pluggable Device Manager, Network Interfaces. (VMM)
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2010 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_pdmnetifs_h
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| 27 | #define ___VBox_pdmnetifs_h
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| 28 |
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| 29 | #include <VBox/types.h>
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| 30 |
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| 31 | RT_C_DECLS_BEGIN
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| 32 |
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| 33 | /** @defgroup grp_pdm_ifs_net PDM Network Interfaces
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| 34 | * @ingroup grp_pdm_interfaces
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| 35 | * @{
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| 36 | */
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| 37 |
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| 38 |
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| 39 | /**
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| 40 | * PDM scatter/gather buffer.
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| 41 | *
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| 42 | * @todo Promote this to VBox/types.h, VBox/pdmcommon.h or some such place.
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| 43 | */
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| 44 | typedef struct PDMSCATTERGATHER
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| 45 | {
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| 46 | /** Flags. */
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| 47 | size_t fFlags;
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| 48 | /** The number of bytes used.
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| 49 | * This is cleared on alloc and set by the user. */
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| 50 | size_t cbUsed;
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| 51 | /** The number of bytes available.
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| 52 | * This is set on alloc and not changed by the user. */
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| 53 | size_t cbAvailable;
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| 54 | /** Private data member for the allocator side. */
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| 55 | void *pvAllocator;
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| 56 | /** Private data member for the user side. */
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| 57 | void *pvUser;
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| 58 | /** The number of segments
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| 59 | * This is set on alloc and not changed by the user. */
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| 60 | size_t cSegs;
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| 61 | /** Variable sized array of segments. */
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| 62 | PDMDATASEG aSegs[1];
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| 63 | } PDMSCATTERGATHER;
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| 64 | /** Pointer to a PDM scatter/gather buffer. */
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| 65 | typedef PDMSCATTERGATHER *PPDMSCATTERGATHER;
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| 66 | /** Pointer to a PDM scatter/gather buffer pointer. */
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| 67 | typedef PPDMSCATTERGATHER *PPPDMSCATTERGATHER;
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| 68 |
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| 69 |
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| 70 | /** @name PDMSCATTERGATHER::fFlags
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| 71 | * @{ */
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| 72 | /** Magic value. */
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| 73 | #define PDMSCATTERGATHER_FLAGS_MAGIC UINT32_C(0xb1b10000)
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| 74 | /** Magic mask. */
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| 75 | #define PDMSCATTERGATHER_FLAGS_MAGIC_MASK UINT32_C(0xffff0000)
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| 76 | /** Owned by owner number 1. */
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| 77 | #define PDMSCATTERGATHER_FLAGS_OWNER_1 UINT32_C(0x00000001)
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| 78 | /** Owned by owner number 2. */
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| 79 | #define PDMSCATTERGATHER_FLAGS_OWNER_2 UINT32_C(0x00000002)
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| 80 | /** Owned by owner number 3. */
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| 81 | #define PDMSCATTERGATHER_FLAGS_OWNER_3 UINT32_C(0x00000002)
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| 82 | /** Owner mask. */
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| 83 | #define PDMSCATTERGATHER_FLAGS_OWNER_MASK UINT32_C(0x00000003)
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| 84 | /** Mask of flags available to general use.
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| 85 | * The parties using the SG must all agree upon how to use these of course. */
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| 86 | #define PDMSCATTERGATHER_FLAGS_AVL_MASK UINT32_C(0x0000f000)
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| 87 | /** Flags reserved for future use, MBZ. */
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| 88 | #define PDMSCATTERGATHER_FLAGS_RVD_MASK UINT32_C(0x00000ff8)
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| 89 | /** @} */
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| 90 |
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| 91 |
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| 92 | /**
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| 93 | * Sets the owner of a scatter/gather buffer.
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| 94 | *
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| 95 | * @param pSgBuf .
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| 96 | * @param uNewOwner The new owner.
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| 97 | */
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| 98 | DECLINLINE(void) PDMScatterGatherSetOwner(PPDMSCATTERGATHER pSgBuf, uint32_t uNewOwner)
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| 99 | {
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| 100 | pSgBuf->fFlags = (pSgBuf->fFlags & ~PDMSCATTERGATHER_FLAGS_OWNER_MASK) | uNewOwner;
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| 101 | }
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| 102 |
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| 103 |
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| 104 |
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| 105 | /** Pointer to a network port interface */
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| 106 | typedef struct PDMINETWORKDOWN *PPDMINETWORKDOWN;
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| 107 | /**
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| 108 | * Network port interface (down).
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| 109 | * Pair with PDMINETWORKUP.
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| 110 | */
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| 111 | typedef struct PDMINETWORKDOWN
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| 112 | {
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| 113 | /**
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| 114 | * Wait until there is space for receiving data. We do not care how much space is available
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| 115 | * because pfnReceive() will re-check and notify the guest if necessary.
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| 116 | *
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| 117 | * This function must be called before the pfnRecieve() method is called.
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| 118 | *
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| 119 | * @returns VBox status code. VINF_SUCCESS means there is at least one receive descriptor available.
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| 120 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 121 | * @param cMillies Number of milliseconds to wait. 0 means return immediately.
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| 122 | *
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| 123 | * @thread Non-EMT.
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| 124 | */
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| 125 | DECLR3CALLBACKMEMBER(int, pfnWaitReceiveAvail,(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies));
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| 126 |
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| 127 | /**
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| 128 | * Receive data from the network.
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| 129 | *
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| 130 | * @returns VBox status code.
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| 131 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 132 | * @param pvBuf The available data.
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| 133 | * @param cb Number of bytes available in the buffer.
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| 134 | *
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| 135 | * @thread Non-EMT.
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| 136 | */
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| 137 | DECLR3CALLBACKMEMBER(int, pfnReceive,(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb));
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| 138 |
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| 139 | /**
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| 140 | * Do pending transmit work on the leaf driver's XMIT thread.
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| 141 | *
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| 142 | * When a PDMINETWORKUP::pfnBeginTransmit or PDMINETWORKUP::pfnAllocBuf call
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| 143 | * fails with VERR_TRY_AGAIN, the leaf drivers XMIT thread will offer to process
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| 144 | * the upstream device/driver when the the VERR_TRY_AGAIN condition has been
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| 145 | * removed. In some cases the VERR_TRY_AGAIN condition is simply being in an
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| 146 | * inconvenient context and the XMIT thread will start working ASAP.
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| 147 | *
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| 148 | * @param pInterface Pointer to this interface.
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| 149 | * @thread Non-EMT.
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| 150 | */
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| 151 | DECLR3CALLBACKMEMBER(void, pfnXmitPending,(PPDMINETWORKDOWN pInterface));
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| 152 |
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| 153 | } PDMINETWORKDOWN;
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| 154 | /** PDMINETWORKDOWN inteface ID. */
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| 155 | #define PDMINETWORKDOWN_IID "52b8cdbb-a087-493b-baa7-81ec3b803e06"
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| 156 |
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| 157 |
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| 158 | /**
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| 159 | * Network link state.
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| 160 | */
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| 161 | typedef enum PDMNETWORKLINKSTATE
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| 162 | {
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| 163 | /** Invalid state. */
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| 164 | PDMNETWORKLINKSTATE_INVALID = 0,
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| 165 | /** The link is up. */
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| 166 | PDMNETWORKLINKSTATE_UP,
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| 167 | /** The link is down. */
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| 168 | PDMNETWORKLINKSTATE_DOWN,
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| 169 | /** The link is temporarily down while resuming. */
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| 170 | PDMNETWORKLINKSTATE_DOWN_RESUME
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| 171 | } PDMNETWORKLINKSTATE;
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| 172 |
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| 173 |
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| 174 | /** Pointer to a network connector interface */
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| 175 | typedef R3PTRTYPE(struct PDMINETWORKUP *) PPDMINETWORKUPR3;
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| 176 | /** Pointer to a network connector interface, ring-0 context. */
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| 177 | typedef R0PTRTYPE(struct PDMINETWORKUPR0 *) PPDMINETWORKUPR0;
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| 178 | /** Pointer to a network connector interface, raw-mode context. */
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| 179 | typedef RCPTRTYPE(struct PDMINETWORKUPRC *) PPDMINETWORKUPRC;
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| 180 | /** Pointer to a current context network connector interface. */
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| 181 | typedef CTX_SUFF(PPDMINETWORKUP) PPDMINETWORKUP;
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| 182 |
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| 183 | /**
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| 184 | * Network connector interface (up).
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| 185 | * Pair with PDMINETWORKDOWN.
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| 186 | */
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| 187 | typedef struct PDMINETWORKUP
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| 188 | {
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| 189 | /**
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| 190 | * Begins a transmit session.
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| 191 | *
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| 192 | * The leaf driver guarantees that there are no concurrent sessions.
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| 193 | *
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| 194 | * @retval VINF_SUCCESS on success. Must always call
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| 195 | * PDMINETWORKUP::pfnEndXmit.
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| 196 | * @retval VERR_TRY_AGAIN if there is already an open transmit session or some
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| 197 | * important resource was unavailable (like buffer space). If it's a
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| 198 | * resources issue, the driver will signal its XMIT thread and have it
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| 199 | * work the device thru the PDMINETWORKDOWN::pfnNotifyBufAvailable
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| 200 | * callback method.
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| 201 | *
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| 202 | * @param pInterface Pointer to the interface structure containing the
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| 203 | * called function pointer.
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| 204 | * @param fOnWorkerThread Set if we're being called on a work thread. Clear
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| 205 | * if an EMT.
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| 206 | *
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| 207 | * @thread Any, but normally EMT or the XMIT thread.
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| 208 | */
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| 209 | DECLR3CALLBACKMEMBER(int, pfnBeginXmit,(PPDMINETWORKUP pInterface, bool fOnWorkerThread));
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| 210 |
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| 211 | /**
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| 212 | * Get a send buffer for passing to pfnSendBuf.
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| 213 | *
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| 214 | * @retval VINF_SUCCESS on success.
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| 215 | * @retval VERR_TRY_AGAIN if temporarily out of buffer space. After this
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| 216 | * happens, the driver will call PDMINETWORKDOWN::pfnNotifyBufAvailable
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| 217 | * when this is a buffer of the required size available.
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| 218 | * @retval VERR_NO_MEMORY if really out of buffer space.
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| 219 | * @retval VERR_NET_DOWN if we cannot send anything to the network at this
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| 220 | * point in time. Drop the frame with a xmit error. This is typically
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| 221 | * only seen when pausing the VM since the device keeps the link state,
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| 222 | * but there could of course be races.
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| 223 | *
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| 224 | * @param pInterface Pointer to the interface structure containing the
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| 225 | * called function pointer.
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| 226 | * @param cbMin The minimum buffer size.
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| 227 | * @param pGso Pointer to a GSO context (only reference while in
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| 228 | * this call). NULL indicates no segmentation
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| 229 | * offloading. PDMSCATTERGATHER::pvUser is used to
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| 230 | * indicate that a network SG uses GSO, usually by
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| 231 | * pointing to a copy of @a pGso.
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| 232 | * @param ppSgBuf Where to return the buffer. The buffer will be
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| 233 | * owned by the caller, designation owner number 1.
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| 234 | *
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| 235 | * @thread Any, but normally EMT or the XMIT thread.
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| 236 | */
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| 237 | DECLR3CALLBACKMEMBER(int, pfnAllocBuf,(PPDMINETWORKUP pInterface, size_t cbMin, PCPDMNETWORKGSO pGso,
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| 238 | PPPDMSCATTERGATHER ppSgBuf));
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| 239 |
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| 240 | /**
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| 241 | * Frees an unused buffer.
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| 242 | *
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| 243 | * @retval VINF_SUCCESS on success.
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| 244 | *
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| 245 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 246 | * @param pSgBuf A buffer from PDMINETWORKUP::pfnAllocBuf or
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| 247 | * PDMINETWORKDOWN::pfnNotifyBufAvailable. The buffer
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| 248 | * ownership shall be 1.
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| 249 | *
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| 250 | * @thread Any, but normally EMT or the XMIT thread.
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| 251 | */
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| 252 | DECLR3CALLBACKMEMBER(int, pfnFreeBuf,(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf));
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| 253 |
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| 254 | /**
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| 255 | * Send data to the network.
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| 256 | *
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| 257 | * @retval VINF_SUCCESS on success.
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| 258 | * @retval VERR_NET_DOWN if the NIC is not connected to a network. pSgBuf will
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| 259 | * be freed.
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| 260 | * @retval VERR_NET_NO_BUFFER_SPACE if we're out of resources. pSgBuf will be
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| 261 | * freed.
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| 262 | *
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| 263 | * @param pInterface Pointer to the interface structure containing the
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| 264 | * called function pointer.
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| 265 | * @param pSgBuf The buffer containing the data to send. The buffer
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| 266 | * ownership shall be 1. The buffer will always be
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| 267 | * consumed, regardless of the status code.
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| 268 | *
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| 269 | * @param fOnWorkerThread Set if we're being called on a work thread. Clear
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| 270 | * if an EMT.
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| 271 | *
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| 272 | * @thread Any, but normally EMT or the XMIT thread.
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| 273 | */
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| 274 | DECLR3CALLBACKMEMBER(int, pfnSendBuf,(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread));
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| 275 |
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| 276 | /**
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| 277 | * Ends a transmit session.
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| 278 | *
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| 279 | * Pairs with successful PDMINETWORKUP::pfnBeginXmit calls.
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| 280 | *
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| 281 | * @param pInterface Pointer to the interface structure containing the
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| 282 | * called function pointer.
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| 283 | *
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| 284 | * @thread Any, but normally EMT or the XMIT thread.
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| 285 | */
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| 286 | DECLR3CALLBACKMEMBER(void, pfnEndXmit,(PPDMINETWORKUP pInterface));
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| 287 |
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| 288 | /**
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| 289 | * Set promiscuous mode.
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| 290 | *
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| 291 | * This is called when the promiscuous mode is set. This means that there doesn't have
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| 292 | * to be a mode change when it's called.
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| 293 | *
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| 294 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 295 | * @param fPromiscuous Set if the adaptor is now in promiscuous mode. Clear if it is not.
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| 296 | * @thread EMT ??
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| 297 | */
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| 298 | DECLR3CALLBACKMEMBER(void, pfnSetPromiscuousMode,(PPDMINETWORKUP pInterface, bool fPromiscuous));
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| 299 |
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| 300 | /**
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| 301 | * Notification on link status changes.
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| 302 | *
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| 303 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 304 | * @param enmLinkState The new link state.
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| 305 | * @thread EMT ??
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| 306 | */
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| 307 | DECLR3CALLBACKMEMBER(void, pfnNotifyLinkChanged,(PPDMINETWORKUP pInterface, PDMNETWORKLINKSTATE enmLinkState));
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| 308 |
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| 309 | /** @todo Add a callback that informs the driver chain about MAC address changes if we ever implement that. */
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| 310 |
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| 311 | } PDMINETWORKUP;
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| 312 |
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| 313 | /** Ring-0 edition of PDMINETWORKUP. */
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| 314 | typedef struct PDMINETWORKUPR0
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| 315 | {
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| 316 | /** @copydoc PDMINETWORKUP::pfnBeginXmit */
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| 317 | DECLR0CALLBACKMEMBER(int, pfnBeginXmit,(PPDMINETWORKUPR0 pInterface, bool fOnWorkerThread));
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| 318 | /** @copydoc PDMINETWORKUP::pfnAllocBuf */
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| 319 | DECLR0CALLBACKMEMBER(int, pfnAllocBuf,(PPDMINETWORKUPR0 pInterface, size_t cbMin, PCPDMNETWORKGSO pGso,
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| 320 | PPPDMSCATTERGATHER ppSgBuf));
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| 321 | /** @copydoc PDMINETWORKUP::pfnFreeBuf */
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| 322 | DECLR0CALLBACKMEMBER(int, pfnFreeBuf,(PPDMINETWORKUPR0 pInterface, PPDMSCATTERGATHER pSgBuf));
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| 323 | /** @copydoc PDMINETWORKUP::pfnSendBuf */
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| 324 | DECLR0CALLBACKMEMBER(int, pfnSendBuf,(PPDMINETWORKUPR0 pInterface, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread));
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| 325 | /** @copydoc PDMINETWORKUP::pfnEndBuf */
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| 326 | DECLR0CALLBACKMEMBER(void, pfnEndXmit,(PPDMINETWORKUPR0 pInterface));
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| 327 | /** @copydoc PDMINETWORKUP::pfnSetPromiscuousMode */
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| 328 | DECLR0CALLBACKMEMBER(void, pfnSetPromiscuousMode,(PPDMINETWORKUPR0 pInterface, bool fPromiscuous));
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| 329 | } PDMINETWORKUPR0;
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| 330 |
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| 331 | /** Raw-mode context edition of PDMINETWORKUP. */
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| 332 | typedef struct PDMINETWORKUPRC
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| 333 | {
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| 334 | /** @copydoc PDMINETWORKUP::pfnBeginXmit */
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| 335 | DECLRCCALLBACKMEMBER(int, pfnBeginXmit,(PPDMINETWORKUPRC pInterface, bool fOnWorkerThread));
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| 336 | /** @copydoc PDMINETWORKUP::pfnAllocBuf */
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| 337 | DECLRCCALLBACKMEMBER(int, pfnAllocBuf,(PPDMINETWORKUPRC pInterface, size_t cbMin, PCPDMNETWORKGSO pGso,
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| 338 | PPPDMSCATTERGATHER ppSgBuf));
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| 339 | /** @copydoc PDMINETWORKUP::pfnFreeBuf */
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| 340 | DECLRCCALLBACKMEMBER(int, pfnFreeBuf,(PPDMINETWORKUPRC pInterface, PPDMSCATTERGATHER pSgBuf));
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| 341 | /** @copydoc PDMINETWORKUP::pfnSendBuf */
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| 342 | DECLRCCALLBACKMEMBER(int, pfnSendBuf,(PPDMINETWORKUPRC pInterface, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread));
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| 343 | /** @copydoc PDMINETWORKUP::pfnEndBuf */
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| 344 | DECLRCCALLBACKMEMBER(void, pfnEndXmit,(PPDMINETWORKUPRC pInterface));
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| 345 | /** @copydoc PDMINETWORKUP::pfnSetPromiscuousMode */
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| 346 | DECLRCCALLBACKMEMBER(void, pfnSetPromiscuousMode,(PPDMINETWORKUPRC pInterface, bool fPromiscuous));
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| 347 | } PDMINETWORKUPRC;
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| 348 |
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| 349 | /** PDMINETWORKUP interface ID. */
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| 350 | #define PDMINETWORKUP_IID "67e7e7a8-2594-4649-a1e3-7cee680c6083"
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| 351 | /** PDMINETWORKUP interface method names. */
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| 352 | #define PDMINETWORKUP_SYM_LIST "BeginXmit;AllocBuf;FreeBuf;SendBuf;EndXmit;SetPromiscuousMode"
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| 353 |
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| 354 |
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| 355 | /** Pointer to a network config port interface */
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| 356 | typedef struct PDMINETWORKCONFIG *PPDMINETWORKCONFIG;
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| 357 | /**
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| 358 | * Network config port interface (main).
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| 359 | * No interface pair.
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| 360 | */
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| 361 | typedef struct PDMINETWORKCONFIG
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| 362 | {
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| 363 | /**
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| 364 | * Gets the current Media Access Control (MAC) address.
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| 365 | *
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| 366 | * @returns VBox status code.
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| 367 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 368 | * @param pMac Where to store the MAC address.
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| 369 | * @thread EMT
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| 370 | */
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| 371 | DECLR3CALLBACKMEMBER(int, pfnGetMac,(PPDMINETWORKCONFIG pInterface, PRTMAC pMac));
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| 372 |
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| 373 | /**
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| 374 | * Gets the new link state.
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| 375 | *
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| 376 | * @returns The current link state.
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| 377 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 378 | * @thread EMT
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| 379 | */
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| 380 | DECLR3CALLBACKMEMBER(PDMNETWORKLINKSTATE, pfnGetLinkState,(PPDMINETWORKCONFIG pInterface));
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| 381 |
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| 382 | /**
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| 383 | * Sets the new link state.
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| 384 | *
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| 385 | * @returns VBox status code.
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| 386 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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| 387 | * @param enmState The new link state
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| 388 | * @thread EMT
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| 389 | */
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| 390 | DECLR3CALLBACKMEMBER(int, pfnSetLinkState,(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState));
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| 391 |
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| 392 | } PDMINETWORKCONFIG;
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| 393 | /** PDMINETWORKCONFIG interface ID. */
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| 394 | #define PDMINETWORKCONFIG_IID "d6d909e8-716d-415d-b109-534e4478ff4e"
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| 395 |
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| 396 | /** @} */
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| 397 |
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| 398 | RT_C_DECLS_END
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| 399 |
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| 400 | #endif
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| 401 |
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