1 | /** @file
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2 | *
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3 | * VBox network devices:
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4 | * NAT network transport driver
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5 | */
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6 |
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7 | /*
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8 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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9 | *
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10 | * This file is part of VirtualBox Open Source Edition (OSE), as
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11 | * available from http://www.virtualbox.org. This file is free software;
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12 | * you can redistribute it and/or modify it under the terms of the GNU
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13 | * General Public License (GPL) as published by the Free Software
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14 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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15 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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16 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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17 | *
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18 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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19 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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20 | * additional information or have any questions.
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21 | */
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22 |
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23 |
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24 | /*******************************************************************************
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25 | * Header Files *
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26 | *******************************************************************************/
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27 | #define LOG_GROUP LOG_GROUP_DRV_NAT
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28 | #define __STDC_LIMIT_MACROS
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29 | #define __STDC_CONSTANT_MACROS
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30 | #ifndef VBOX_NAT_SOURCES
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31 | #include "Network/slirp/libslirp.h"
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32 | #else
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33 | #include <sys/types.h>
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34 | #include <sys/socket.h>
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35 |
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36 | #include <netinet/in.h>
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37 |
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38 | #include <errno.h>
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39 |
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40 | #include <unistd.h>
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41 |
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42 | #include <fcntl.h>
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43 |
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44 | #include <string.h>
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45 |
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46 | #include "Network/nat/nat.h"
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47 | #endif
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48 | #include <VBox/pdmdrv.h>
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49 | #include <iprt/assert.h>
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50 | #include <iprt/file.h>
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51 | #include <iprt/string.h>
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52 | #include <iprt/critsect.h>
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53 | #include <iprt/cidr.h>
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54 |
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55 | #include "Builtins.h"
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56 |
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57 |
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58 | /*******************************************************************************
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59 | * Structures and Typedefs *
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60 | *******************************************************************************/
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61 | /**
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62 | * NAT network transport driver instance data.
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63 | */
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64 | typedef struct DRVNAT
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65 | {
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66 | /** The network interface. */
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67 | PDMINETWORKCONNECTOR INetworkConnector;
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68 | /** The port we're attached to. */
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69 | PPDMINETWORKPORT pPort;
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70 | /** The network config of the port we're attached to. */
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71 | PPDMINETWORKCONFIG pConfig;
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72 | /** Pointer to the driver instance. */
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73 | PPDMDRVINS pDrvIns;
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74 | /** Slirp critical section. */
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75 | RTCRITSECT CritSect;
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76 | /** Link state */
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77 | PDMNETWORKLINKSTATE enmLinkState;
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78 | /** NAT state for this instance. */
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79 | #ifndef VBOX_NAT_SOURCES
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80 | PNATState pNATState;
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81 | #endif
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82 | /** TFTP directory prefix. */
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83 | char *pszTFTPPrefix;
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84 | /** Boot file name to provide in the DHCP server response. */
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85 | char *pszBootFile;
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86 | } DRVNAT, *PDRVNAT;
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87 |
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88 | /** Converts a pointer to NAT::INetworkConnector to a PRDVNAT. */
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89 | #define PDMINETWORKCONNECTOR_2_DRVNAT(pInterface) ( (PDRVNAT)((uintptr_t)pInterface - RT_OFFSETOF(DRVNAT, INetworkConnector)) )
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90 |
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91 |
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92 | /*******************************************************************************
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93 | * Global Variables *
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94 | *******************************************************************************/
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95 | #if 0
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96 | /** If set the thread should terminate. */
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97 | static bool g_fThreadTerm = false;
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98 | /** The thread id of the select thread (drvNATSelectThread()). */
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99 | static RTTHREAD g_ThreadSelect;
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100 | #endif
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101 |
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102 |
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103 | /*******************************************************************************
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104 | * Internal Functions *
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105 | *******************************************************************************/
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106 |
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107 |
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108 | #ifdef VBOX_NAT_SOURCES
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109 | /*
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110 | * Sends data to guest called from NAT glue code
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111 | */
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112 | static DECLCALLBACK(void) drvNATOutput(const void * data, const uint8_t *msg, size_t size)
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113 | {
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114 | PDRVNAT pThis = (PDRVNAT)(void *)data;
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115 | LogFlow(("output: pvBuf=%p cb=%#x\n", msg, size));
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116 | int rc = pThis->pPort->pfnWaitReceiveAvail(pThis->pPort, 0);
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117 | if (RT_SUCCESS(rc))
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118 | pThis->pPort->pfnReceive(pThis->pPort, msg, size);
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119 | LogFlow(("output: exit\n"));
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120 | }
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121 |
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122 | #endif
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123 |
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124 | /**
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125 | * Send data to the network.
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126 | *
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127 | * @returns VBox status code.
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128 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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129 | * @param pvBuf Data to send.
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130 | * @param cb Number of bytes to send.
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131 | * @thread EMT
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132 | */
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133 | static DECLCALLBACK(int) drvNATSend(PPDMINETWORKCONNECTOR pInterface, const void *pvBuf, size_t cb)
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134 | {
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135 | PDRVNAT pThis = PDMINETWORKCONNECTOR_2_DRVNAT(pInterface);
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136 |
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137 | LogFlow(("drvNATSend: pvBuf=%p cb=%#x\n", pvBuf, cb));
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138 | Log2(("drvNATSend: pvBuf=%p cb=%#x\n"
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139 | "%.*Vhxd\n",
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140 | pvBuf, cb, cb, pvBuf));
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141 |
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142 | int rc = RTCritSectEnter(&pThis->CritSect);
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143 | AssertReleaseRC(rc);
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144 |
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145 | Assert(pThis->enmLinkState == PDMNETWORKLINKSTATE_UP);
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146 | if (pThis->enmLinkState == PDMNETWORKLINKSTATE_UP) {
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147 | #ifndef VBOX_NAT_SOURCES
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148 | slirp_input(pThis->pNATState, (uint8_t *)pvBuf, cb);
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149 | #else
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150 | ether_chk(pThis, pvBuf, cb);
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151 | #endif
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152 | }
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153 | RTCritSectLeave(&pThis->CritSect);
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154 | LogFlow(("drvNATSend: end\n"));
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155 | return VINF_SUCCESS;
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156 | }
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157 |
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158 |
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159 | /**
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160 | * Set promiscuous mode.
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161 | *
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162 | * This is called when the promiscuous mode is set. This means that there doesn't have
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163 | * to be a mode change when it's called.
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164 | *
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165 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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166 | * @param fPromiscuous Set if the adaptor is now in promiscuous mode. Clear if it is not.
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167 | * @thread EMT
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168 | */
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169 | static DECLCALLBACK(void) drvNATSetPromiscuousMode(PPDMINETWORKCONNECTOR pInterface, bool fPromiscuous)
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170 | {
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171 | LogFlow(("drvNATSetPromiscuousMode: fPromiscuous=%d\n", fPromiscuous));
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172 | /* nothing to do */
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173 | }
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174 |
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175 |
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176 | /**
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177 | * Notification on link status changes.
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178 | *
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179 | * @param pInterface Pointer to the interface structure containing the called function pointer.
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180 | * @param enmLinkState The new link state.
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181 | * @thread EMT
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182 | */
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183 | static DECLCALLBACK(void) drvNATNotifyLinkChanged(PPDMINETWORKCONNECTOR pInterface, PDMNETWORKLINKSTATE enmLinkState)
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184 | {
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185 | PDRVNAT pThis = PDMINETWORKCONNECTOR_2_DRVNAT(pInterface);
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186 |
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187 | LogFlow(("drvNATNotifyLinkChanged: enmLinkState=%d\n", enmLinkState));
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188 |
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189 | int rc = RTCritSectEnter(&pThis->CritSect);
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190 | AssertReleaseRC(rc);
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191 | pThis->enmLinkState = enmLinkState;
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192 |
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193 | switch (enmLinkState)
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194 | {
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195 | case PDMNETWORKLINKSTATE_UP:
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196 | LogRel(("NAT: link up\n"));
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197 | #ifndef VBOX_NAT_SOURCES
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198 | slirp_link_up(pThis->pNATState);
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199 | #endif
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200 | break;
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201 |
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202 | case PDMNETWORKLINKSTATE_DOWN:
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203 | case PDMNETWORKLINKSTATE_DOWN_RESUME:
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204 | LogRel(("NAT: link down\n"));
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205 | #ifndef VBOX_NAT_SOURCES
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206 | slirp_link_down(pThis->pNATState);
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207 | #endif
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208 | break;
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209 |
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210 | default:
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211 | AssertMsgFailed(("drvNATNotifyLinkChanged: unexpected link state %d\n", enmLinkState));
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212 | }
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213 | RTCritSectLeave(&pThis->CritSect);
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214 | }
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215 |
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216 |
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217 | /**
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218 | * Poller callback.
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219 | */
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220 | static DECLCALLBACK(void) drvNATPoller(PPDMDRVINS pDrvIns)
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221 | {
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222 | PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
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223 | fd_set ReadFDs;
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224 | fd_set WriteFDs;
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225 | fd_set XcptFDs;
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226 | int cFDs = -1;
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227 | FD_ZERO(&ReadFDs);
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228 | FD_ZERO(&WriteFDs);
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229 | FD_ZERO(&XcptFDs);
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230 |
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231 | int rc = RTCritSectEnter(&pThis->CritSect);
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232 | AssertReleaseRC(rc);
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233 |
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234 | #ifndef VBOX_NAT_SOURCES
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235 | slirp_select_fill(pThis->pNATState, &cFDs, &ReadFDs, &WriteFDs, &XcptFDs);
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236 | #else
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237 | nat_select_fill(NULL, &cFDs, &ReadFDs, &WriteFDs, &XcptFDs);
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238 | #endif
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239 |
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240 | struct timeval tv = {0, 0}; /* no wait */
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241 | int cReadFDs = select(cFDs + 1, &ReadFDs, &WriteFDs, &XcptFDs, &tv);
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242 | #ifndef VBOX_NAT_SOURCES
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243 | if (cReadFDs >= 0)
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244 | slirp_select_poll(pThis->pNATState, &ReadFDs, &WriteFDs, &XcptFDs);
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245 | #else
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246 | if (cReadFDs >= 0) {
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247 | nat_select_poll(pThis, &ReadFDs, &WriteFDs, &XcptFDs);
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248 | }
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249 | #endif
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250 |
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251 | RTCritSectLeave(&pThis->CritSect);
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252 | }
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253 |
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254 | #ifndef VBOX_NAT_SOURCES
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255 | /**
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256 | * Function called by slirp to check if it's possible to feed incoming data to the network port.
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257 | * @returns 1 if possible.
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258 | * @returns 0 if not possible.
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259 | */
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260 | int slirp_can_output(void *pvUser)
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261 | {
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262 | PDRVNAT pThis = (PDRVNAT)pvUser;
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263 |
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264 | Assert(pThis);
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265 |
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266 | /** Happens during termination */
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267 | if (!RTCritSectIsOwner(&pThis->CritSect))
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268 | return 0;
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269 |
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270 | int rc = pThis->pPort->pfnWaitReceiveAvail(pThis->pPort, 0);
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271 | return RT_SUCCESS(rc);
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272 | }
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273 |
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274 |
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275 | /**
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276 | * Function called by slirp to feed incoming data to the network port.
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277 | */
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278 | void slirp_output(void *pvUser, const uint8_t *pu8Buf, int cb)
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279 | {
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280 | PDRVNAT pThis = (PDRVNAT)pvUser;
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281 |
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282 | LogFlow(("slirp_output BEGIN %x %d\n", pu8Buf, cb));
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283 | Log2(("slirp_output: pu8Buf=%p cb=%#x (pThis=%p)\n"
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284 | "%.*Vhxd\n",
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285 | pu8Buf, cb, pThis,
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286 | cb, pu8Buf));
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287 |
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288 | Assert(pThis);
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289 |
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290 | /** Happens during termination */
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291 | if (!RTCritSectIsOwner(&pThis->CritSect))
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292 | return;
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293 |
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294 | int rc = pThis->pPort->pfnReceive(pThis->pPort, pu8Buf, cb);
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295 | AssertRC(rc);
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296 | LogFlow(("slirp_output END %x %d\n", pu8Buf, cb));
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297 | }
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298 | #endif
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299 |
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300 | /**
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301 | * Queries an interface to the driver.
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302 | *
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303 | * @returns Pointer to interface.
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304 | * @returns NULL if the interface was not supported by the driver.
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305 | * @param pInterface Pointer to this interface structure.
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306 | * @param enmInterface The requested interface identification.
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307 | * @thread Any thread.
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308 | */
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309 | static DECLCALLBACK(void *) drvNATQueryInterface(PPDMIBASE pInterface, PDMINTERFACE enmInterface)
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310 | {
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311 | PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
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312 | PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
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313 | switch (enmInterface)
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314 | {
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315 | case PDMINTERFACE_BASE:
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316 | return &pDrvIns->IBase;
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317 | case PDMINTERFACE_NETWORK_CONNECTOR:
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318 | return &pThis->INetworkConnector;
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319 | default:
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320 | return NULL;
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321 | }
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322 | }
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323 |
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324 |
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325 | /**
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326 | * Destruct a driver instance.
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327 | *
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328 | * Most VM resources are freed by the VM. This callback is provided so that any non-VM
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329 | * resources can be freed correctly.
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330 | *
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331 | * @param pDrvIns The driver instance data.
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332 | */
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333 | static DECLCALLBACK(void) drvNATDestruct(PPDMDRVINS pDrvIns)
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334 | {
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335 | PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
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336 |
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337 | LogFlow(("drvNATDestruct:\n"));
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338 |
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339 | int rc = RTCritSectEnter(&pThis->CritSect);
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340 | AssertReleaseRC(rc);
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341 | #ifndef VBOX_NAT_SOURCES
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342 | slirp_term(pThis->pNATState);
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343 | pThis->pNATState = NULL;
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344 | #endif
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345 | RTCritSectLeave(&pThis->CritSect);
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346 |
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347 | RTCritSectDelete(&pThis->CritSect);
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348 | }
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349 |
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350 |
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351 | /**
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352 | * Sets up the redirectors.
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353 | *
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354 | * @returns VBox status code.
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355 | * @param pCfgHandle The drivers configuration handle.
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356 | */
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357 | static int drvNATConstructRedir(unsigned iInstance, PDRVNAT pThis, PCFGMNODE pCfgHandle, RTIPV4ADDR Network)
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358 | {
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359 | #ifndef VBOX_NAT_SOURCES
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360 | /*
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361 | * Enumerate redirections.
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362 | */
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363 | for (PCFGMNODE pNode = CFGMR3GetFirstChild(pCfgHandle); pNode; pNode = CFGMR3GetNextChild(pNode))
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364 | {
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365 | /*
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366 | * Validate the port forwarding config.
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367 | */
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368 | if (!CFGMR3AreValuesValid(pNode, "Protocol\0UDP\0HostPort\0GuestPort\0GuestIP\0"))
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369 | return PDMDRV_SET_ERROR(pThis->pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES, N_("Unknown configuration in port forwarding"));
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370 |
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371 | /* protocol type */
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372 | bool fUDP;
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373 | char szProtocol[32];
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374 | int rc = CFGMR3QueryString(pNode, "Protocol", &szProtocol[0], sizeof(szProtocol));
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375 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
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376 | {
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377 | rc = CFGMR3QueryBool(pNode, "UDP", &fUDP);
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378 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
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379 | fUDP = false;
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380 | else if (RT_FAILURE(rc))
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381 | return PDMDrvHlpVMSetError(pThis->pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"UDP\" boolean failed"), iInstance);
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382 | }
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383 | else if (RT_SUCCESS(rc))
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384 | {
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385 | if (!RTStrICmp(szProtocol, "TCP"))
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386 | fUDP = false;
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387 | else if (!RTStrICmp(szProtocol, "UDP"))
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388 | fUDP = true;
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389 | else
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390 | return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_INVALID_PARAMETER, RT_SRC_POS, N_("NAT#%d: Invalid configuration value for \"Protocol\": \"%s\""), iInstance, szProtocol);
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391 | }
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392 | else
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393 | return PDMDrvHlpVMSetError(pThis->pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"Protocol\" string failed"), iInstance);
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394 |
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395 | /* host port */
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396 | int32_t iHostPort;
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397 | rc = CFGMR3QueryS32(pNode, "HostPort", &iHostPort);
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398 | if (RT_FAILURE(rc))
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399 | return PDMDrvHlpVMSetError(pThis->pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"HostPort\" integer failed"), iInstance);
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400 |
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401 | /* guest port */
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402 | int32_t iGuestPort;
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403 | rc = CFGMR3QueryS32(pNode, "GuestPort", &iGuestPort);
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404 | if (RT_FAILURE(rc))
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405 | return PDMDrvHlpVMSetError(pThis->pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"GuestPort\" integer failed"), iInstance);
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406 |
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407 | /* guest address */
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408 | char szGuestIP[32];
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409 | rc = CFGMR3QueryString(pNode, "GuestIP", &szGuestIP[0], sizeof(szGuestIP));
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410 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
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411 | RTStrPrintf(szGuestIP, sizeof(szGuestIP), "%d.%d.%d.%d",
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412 | (Network & 0xFF000000) >> 24, (Network & 0xFF0000) >> 16, (Network & 0xFF00) >> 8, (Network & 0xE0) | 15);
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413 | else if (RT_FAILURE(rc))
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414 | return PDMDrvHlpVMSetError(pThis->pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"GuestIP\" string failed"), iInstance);
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415 | struct in_addr GuestIP;
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416 | if (!inet_aton(szGuestIP, &GuestIP))
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417 | return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_NAT_REDIR_GUEST_IP, RT_SRC_POS, N_("NAT#%d: configuration error: invalid \"GuestIP\"=\"%s\", inet_aton failed"), iInstance, szGuestIP);
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418 |
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419 | /*
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420 | * Call slirp about it.
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421 | */
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422 | Log(("drvNATConstruct: Redir %d -> %s:%d\n", iHostPort, szGuestIP, iGuestPort));
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423 | if (slirp_redir(pThis->pNATState, fUDP, iHostPort, GuestIP, iGuestPort) < 0)
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424 | return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_NAT_REDIR_SETUP, RT_SRC_POS, N_("NAT#%d: configuration error: failed to set up redirection of %d to %s:%d. Probably a conflict with existing services or other rules"), iInstance, iHostPort, szGuestIP, iGuestPort);
|
---|
425 | } /* for each redir rule */
|
---|
426 | #endif
|
---|
427 |
|
---|
428 | return VINF_SUCCESS;
|
---|
429 | }
|
---|
430 |
|
---|
431 | /**
|
---|
432 | * Get the MAC address into the slirp stack.
|
---|
433 | */
|
---|
434 | static void drvNATSetMac(PDRVNAT pThis)
|
---|
435 | {
|
---|
436 | #ifndef VBOX_NAT_SOURCES
|
---|
437 | if (pThis->pConfig)
|
---|
438 | {
|
---|
439 | RTMAC Mac;
|
---|
440 | pThis->pConfig->pfnGetMac(pThis->pConfig, &Mac);
|
---|
441 | slirp_set_ethaddr(pThis->pNATState, Mac.au8);
|
---|
442 | }
|
---|
443 | #endif
|
---|
444 | }
|
---|
445 |
|
---|
446 |
|
---|
447 | /**
|
---|
448 | * After loading we have to pass the MAC address of the ethernet device to the slirp stack.
|
---|
449 | * Otherwise the guest is not reachable until it performs a DHCP request or an ARP request
|
---|
450 | * (usually done during guest boot).
|
---|
451 | */
|
---|
452 | static DECLCALLBACK(int) drvNATLoadDone(PPDMDRVINS pDrvIns, PSSMHANDLE pSSMHandle)
|
---|
453 | {
|
---|
454 | PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
|
---|
455 | drvNATSetMac(pThis);
|
---|
456 | return VINF_SUCCESS;
|
---|
457 | }
|
---|
458 |
|
---|
459 |
|
---|
460 | /**
|
---|
461 | * Some guests might not use DHCP to retrieve an IP but use a static IP.
|
---|
462 | */
|
---|
463 | static DECLCALLBACK(void) drvNATPowerOn(PPDMDRVINS pDrvIns)
|
---|
464 | {
|
---|
465 | PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
|
---|
466 | drvNATSetMac(pThis);
|
---|
467 | }
|
---|
468 |
|
---|
469 |
|
---|
470 | /**
|
---|
471 | * Construct a NAT network transport driver instance.
|
---|
472 | *
|
---|
473 | * @returns VBox status.
|
---|
474 | * @param pDrvIns The driver instance data.
|
---|
475 | * If the registration structure is needed, pDrvIns->pDrvReg points to it.
|
---|
476 | * @param pCfgHandle Configuration node handle for the driver. Use this to obtain the configuration
|
---|
477 | * of the driver instance. It's also found in pDrvIns->pCfgHandle, but like
|
---|
478 | * iInstance it's expected to be used a bit in this function.
|
---|
479 | */
|
---|
480 | static DECLCALLBACK(int) drvNATConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle)
|
---|
481 | {
|
---|
482 | PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
|
---|
483 | char szNetAddr[16];
|
---|
484 | char szNetwork[32]; /* xxx.xxx.xxx.xxx/yy */
|
---|
485 | LogFlow(("drvNATConstruct:\n"));
|
---|
486 |
|
---|
487 | /*
|
---|
488 | * Validate the config.
|
---|
489 | */
|
---|
490 | if (!CFGMR3AreValuesValid(pCfgHandle, "PassDomain\0TFTPPrefix\0BootFile\0Network\0"))
|
---|
491 | return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES, N_("Unknown NAT configuration option, only supports PassDomain, TFTPPrefix, BootFile and Network"));
|
---|
492 |
|
---|
493 | /*
|
---|
494 | * Init the static parts.
|
---|
495 | */
|
---|
496 | pThis->pDrvIns = pDrvIns;
|
---|
497 | #ifndef VBOX_NAT_SOURCES
|
---|
498 | pThis->pNATState = NULL;
|
---|
499 | #endif
|
---|
500 | pThis->pszTFTPPrefix = NULL;
|
---|
501 | pThis->pszBootFile = NULL;
|
---|
502 | /* IBase */
|
---|
503 | pDrvIns->IBase.pfnQueryInterface = drvNATQueryInterface;
|
---|
504 | /* INetwork */
|
---|
505 | pThis->INetworkConnector.pfnSend = drvNATSend;
|
---|
506 | pThis->INetworkConnector.pfnSetPromiscuousMode = drvNATSetPromiscuousMode;
|
---|
507 | pThis->INetworkConnector.pfnNotifyLinkChanged = drvNATNotifyLinkChanged;
|
---|
508 |
|
---|
509 | /*
|
---|
510 | * Get the configuration settings.
|
---|
511 | */
|
---|
512 | bool fPassDomain = true;
|
---|
513 | int rc = CFGMR3QueryBool(pCfgHandle, "PassDomain", &fPassDomain);
|
---|
514 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
---|
515 | fPassDomain = true;
|
---|
516 | else if (RT_FAILURE(rc))
|
---|
517 | return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"PassDomain\" boolean failed"), pDrvIns->iInstance);
|
---|
518 |
|
---|
519 | rc = CFGMR3QueryStringAlloc(pCfgHandle, "TFTPPrefix", &pThis->pszTFTPPrefix);
|
---|
520 | if (RT_FAILURE(rc) && rc != VERR_CFGM_VALUE_NOT_FOUND)
|
---|
521 | return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"TFTPPrefix\" string failed"), pDrvIns->iInstance);
|
---|
522 | rc = CFGMR3QueryStringAlloc(pCfgHandle, "BootFile", &pThis->pszBootFile);
|
---|
523 | if (RT_FAILURE(rc) && rc != VERR_CFGM_VALUE_NOT_FOUND)
|
---|
524 | return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"BootFile\" string failed"), pDrvIns->iInstance);
|
---|
525 |
|
---|
526 | /*
|
---|
527 | * Query the network port interface.
|
---|
528 | */
|
---|
529 | pThis->pPort = (PPDMINETWORKPORT)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase, PDMINTERFACE_NETWORK_PORT);
|
---|
530 | if (!pThis->pPort)
|
---|
531 | return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
|
---|
532 | N_("Configuration error: the above device/driver didn't export the network port interface"));
|
---|
533 | pThis->pConfig = (PPDMINETWORKCONFIG)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase, PDMINTERFACE_NETWORK_CONFIG);
|
---|
534 | if (!pThis->pConfig)
|
---|
535 | return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
|
---|
536 | N_("Configuration error: the above device/driver didn't export the network config interface"));
|
---|
537 |
|
---|
538 | /* Generate a network address for this network card. */
|
---|
539 | rc = CFGMR3QueryString(pCfgHandle, "Network", szNetwork, sizeof(szNetwork));
|
---|
540 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
---|
541 | RTStrPrintf(szNetwork, sizeof(szNetwork), "10.0.%d.0/24", pDrvIns->iInstance + 2);
|
---|
542 | else if (RT_FAILURE(rc))
|
---|
543 | return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"Network\" string failed"), pDrvIns->iInstance);
|
---|
544 |
|
---|
545 | RTIPV4ADDR Network;
|
---|
546 | RTIPV4ADDR Netmask;
|
---|
547 | rc = RTCidrStrToIPv4(szNetwork, &Network, &Netmask);
|
---|
548 | if (RT_FAILURE(rc))
|
---|
549 | return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: Configuration error: network '%s' describes not a valid IPv4 network"), pDrvIns->iInstance, szNetwork);
|
---|
550 |
|
---|
551 | RTStrPrintf(szNetAddr, sizeof(szNetAddr), "%d.%d.%d.%d",
|
---|
552 | (Network & 0xFF000000) >> 24, (Network & 0xFF0000) >> 16, (Network & 0xFF00) >> 8, Network & 0xFF);
|
---|
553 |
|
---|
554 | /*
|
---|
555 | * The slirp lock..
|
---|
556 | */
|
---|
557 | rc = RTCritSectInit(&pThis->CritSect);
|
---|
558 | if (RT_FAILURE(rc))
|
---|
559 | return rc;
|
---|
560 | #if 0
|
---|
561 | rc = RTSemEventCreate(&g_EventSem);
|
---|
562 | if (RT_SUCCESS(rc))
|
---|
563 | {
|
---|
564 | /*
|
---|
565 | * Start the select thread. (it'll block on the sem)
|
---|
566 | */
|
---|
567 | g_fThreadTerm = false;
|
---|
568 | rc = RTThreadCreate(&g_ThreadSelect, drvNATSelectThread, 0, NULL, "NATSEL");
|
---|
569 | if (RT_SUCCESS(rc))
|
---|
570 | {
|
---|
571 | #endif
|
---|
572 | #ifndef VBOX_NAT_SOURCES
|
---|
573 | /*
|
---|
574 | * Initialize slirp.
|
---|
575 | */
|
---|
576 | rc = slirp_init(&pThis->pNATState, &szNetAddr[0], Netmask, fPassDomain, pThis->pszTFTPPrefix, pThis->pszBootFile, pThis);
|
---|
577 | if (RT_SUCCESS(rc))
|
---|
578 | {
|
---|
579 | int rc2 = drvNATConstructRedir(pDrvIns->iInstance, pThis, pCfgHandle, Network);
|
---|
580 | if (RT_SUCCESS(rc2))
|
---|
581 | {
|
---|
582 | /*
|
---|
583 | * Register a load done notification to get the MAC address into the slirp
|
---|
584 | * engine after we loaded a guest state.
|
---|
585 | */
|
---|
586 | rc2 = PDMDrvHlpSSMRegister(pDrvIns, pDrvIns->pDrvReg->szDriverName,
|
---|
587 | pDrvIns->iInstance, 0, 0,
|
---|
588 | NULL, NULL, NULL, NULL, NULL, drvNATLoadDone);
|
---|
589 | AssertRC(rc2);
|
---|
590 | pDrvIns->pDrvHlp->pfnPDMPollerRegister(pDrvIns, drvNATPoller);
|
---|
591 |
|
---|
592 | pThis->enmLinkState = PDMNETWORKLINKSTATE_UP;
|
---|
593 | #if 0
|
---|
594 | RTSemEventSignal(g_EventSem);
|
---|
595 | RTThreadSleep(0);
|
---|
596 | #endif
|
---|
597 | /* might return VINF_NAT_DNS */
|
---|
598 | return rc;
|
---|
599 | }
|
---|
600 | /* failure path */
|
---|
601 | rc = rc2;
|
---|
602 | slirp_term(pThis->pNATState);
|
---|
603 | pThis->pNATState = NULL;
|
---|
604 | }
|
---|
605 | else
|
---|
606 | {
|
---|
607 | PDMDRV_SET_ERROR(pDrvIns, rc, N_("Unknown error during NAT networking setup: "));
|
---|
608 | AssertMsgFailed(("Add error message for rc=%d (%Rrc)\n", rc, rc));
|
---|
609 | }
|
---|
610 | #else
|
---|
611 | pDrvIns->pDrvHlp->pfnPDMPollerRegister(pDrvIns, drvNATPoller);
|
---|
612 | pThis->enmLinkState = PDMNETWORKLINKSTATE_UP;
|
---|
613 | struct nat_output_callbacks cb;
|
---|
614 | cb.noc_guest_out = drvNATOutput;
|
---|
615 | nat_init(&cb);
|
---|
616 | ipfw_nat_init();
|
---|
617 | #endif
|
---|
618 | #if 0
|
---|
619 | g_fThreadTerm = true;
|
---|
620 | RTSemEventSignal(g_EventSem);
|
---|
621 | RTThreadSleep(0);
|
---|
622 | }
|
---|
623 | RTSemEventDestroy(g_EventSem);
|
---|
624 | g_EventSem = NULL;
|
---|
625 | }
|
---|
626 | #endif
|
---|
627 | #ifndef VBOX_NAT_SOURCES
|
---|
628 | RTCritSectDelete(&pThis->CritSect);
|
---|
629 | #endif
|
---|
630 | return rc;
|
---|
631 | }
|
---|
632 |
|
---|
633 |
|
---|
634 |
|
---|
635 | /**
|
---|
636 | * NAT network transport driver registration record.
|
---|
637 | */
|
---|
638 | const PDMDRVREG g_DrvNAT =
|
---|
639 | {
|
---|
640 | /* u32Version */
|
---|
641 | PDM_DRVREG_VERSION,
|
---|
642 | /* szDriverName */
|
---|
643 | "NAT",
|
---|
644 | /* pszDescription */
|
---|
645 | "NAT Network Transport Driver",
|
---|
646 | /* fFlags */
|
---|
647 | PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
|
---|
648 | /* fClass. */
|
---|
649 | PDM_DRVREG_CLASS_NETWORK,
|
---|
650 | /* cMaxInstances */
|
---|
651 | 16,
|
---|
652 | /* cbInstance */
|
---|
653 | sizeof(DRVNAT),
|
---|
654 | /* pfnConstruct */
|
---|
655 | drvNATConstruct,
|
---|
656 | /* pfnDestruct */
|
---|
657 | drvNATDestruct,
|
---|
658 | /* pfnIOCtl */
|
---|
659 | NULL,
|
---|
660 | /* pfnPowerOn */
|
---|
661 | drvNATPowerOn,
|
---|
662 | /* pfnReset */
|
---|
663 | NULL,
|
---|
664 | /* pfnSuspend */
|
---|
665 | NULL,
|
---|
666 | /* pfnResume */
|
---|
667 | NULL,
|
---|
668 | /* pfnDetach */
|
---|
669 | NULL,
|
---|
670 | /* pfnPowerOff */
|
---|
671 | NULL
|
---|
672 | };
|
---|