1 | /* $Id: SrvIntNetR0.cpp 103025 2024-01-24 14:21:13Z vboxsync $ */
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2 | /** @file
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3 | * Internal networking - The ring 0 service.
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4 | *
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5 | * @remarks No lazy code changes. If you don't understand exactly what you're
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6 | * doing, get an understanding or forget it.
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7 | * All changes shall be reviewed by bird before commit. If not around,
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8 | * email and let Frank and/or Klaus OK the changes before committing.
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9 | */
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10 |
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11 | /*
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12 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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13 | *
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14 | * This file is part of VirtualBox base platform packages, as
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15 | * available from https://www.virtualbox.org.
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16 | *
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17 | * This program is free software; you can redistribute it and/or
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18 | * modify it under the terms of the GNU General Public License
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19 | * as published by the Free Software Foundation, in version 3 of the
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20 | * License.
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21 | *
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22 | * This program is distributed in the hope that it will be useful, but
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23 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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25 | * General Public License for more details.
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26 | *
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27 | * You should have received a copy of the GNU General Public License
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28 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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29 | *
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30 | * SPDX-License-Identifier: GPL-3.0-only
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31 | */
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32 |
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33 |
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34 | /*********************************************************************************************************************************
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35 | * Header Files *
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36 | *********************************************************************************************************************************/
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37 | #define LOG_GROUP LOG_GROUP_SRV_INTNET
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38 | #include <VBox/intnet.h>
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39 | #include <VBox/intnetinline.h>
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40 | #include <VBox/vmm/pdmnetinline.h>
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41 | #include <VBox/sup.h>
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42 | #include <VBox/vmm/pdm.h>
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43 | #include <VBox/log.h>
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44 |
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45 | #include <iprt/asm.h>
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46 | #include <iprt/assert.h>
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47 | #include <iprt/handletable.h>
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48 | #include <iprt/mp.h>
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49 | #include <iprt/mem.h>
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50 | #include <iprt/net.h>
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51 | #include <iprt/semaphore.h>
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52 | #include <iprt/spinlock.h>
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53 | #include <iprt/string.h>
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54 | #include <iprt/thread.h>
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55 | #include <iprt/time.h>
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56 |
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57 |
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58 | /*********************************************************************************************************************************
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59 | * Defined Constants And Macros *
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60 | *********************************************************************************************************************************/
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61 | /** @def INTNET_WITH_DHCP_SNOOPING
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62 | * Enabled DHCP snooping when in shared-mac-on-the-wire mode. */
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63 | #define INTNET_WITH_DHCP_SNOOPING
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64 |
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65 | /** The maximum number of interface in a network. */
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66 | #define INTNET_MAX_IFS (1023 + 1 + 16)
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67 |
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68 | /** The number of entries to grow the destination tables with. */
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69 | #if 0
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70 | # define INTNET_GROW_DSTTAB_SIZE 16
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71 | #else
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72 | # define INTNET_GROW_DSTTAB_SIZE 1
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73 | #endif
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74 |
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75 | /** The wakeup bit in the INTNETIF::cBusy and INTNETRUNKIF::cBusy counters. */
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76 | #define INTNET_BUSY_WAKEUP_MASK RT_BIT_32(30)
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77 |
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78 |
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79 | /*********************************************************************************************************************************
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80 | * Structures and Typedefs *
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81 | *********************************************************************************************************************************/
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82 | /**
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83 | * MAC address lookup table entry.
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84 | */
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85 | typedef struct INTNETMACTABENTRY
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86 | {
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87 | /** The MAC address of this entry. */
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88 | RTMAC MacAddr;
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89 | /** Is it is effectively promiscuous mode. */
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90 | bool fPromiscuousEff;
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91 | /** Is it promiscuous and should it see unrelated trunk traffic. */
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92 | bool fPromiscuousSeeTrunk;
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93 | /** Is it active.
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94 | * We ignore the entry if this is clear and may end up sending packets addressed
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95 | * to this interface onto the trunk. The reasoning for this is that this could
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96 | * be the interface of a VM that just has been teleported to a different host. */
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97 | bool fActive;
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98 | /** Pointer to the network interface. */
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99 | struct INTNETIF *pIf;
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100 | } INTNETMACTABENTRY;
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101 | /** Pointer to a MAC address lookup table entry. */
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102 | typedef INTNETMACTABENTRY *PINTNETMACTABENTRY;
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103 |
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104 | /**
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105 | * MAC address lookup table.
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106 | *
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107 | * @todo Having this in a separate structure didn't work out as well as it
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108 | * should. Consider merging it into INTNETNETWORK.
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109 | */
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110 | typedef struct INTNETMACTAB
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111 | {
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112 | /** The current number of entries. */
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113 | uint32_t cEntries;
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114 | /** The number of entries we've allocated space for. */
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115 | uint32_t cEntriesAllocated;
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116 | /** Table entries. */
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117 | PINTNETMACTABENTRY paEntries;
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118 |
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119 | /** The number of interface entries currently in promicuous mode. */
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120 | uint32_t cPromiscuousEntries;
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121 | /** The number of interface entries currently in promicuous mode that
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122 | * shall not see unrelated trunk traffic. */
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123 | uint32_t cPromiscuousNoTrunkEntries;
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124 |
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125 | /** The host MAC address (reported). */
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126 | RTMAC HostMac;
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127 | /** The effective host promiscuous setting (reported). */
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128 | bool fHostPromiscuousEff;
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129 | /** The real host promiscuous setting (reported). */
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130 | bool fHostPromiscuousReal;
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131 | /** Whether the host is active. */
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132 | bool fHostActive;
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133 |
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134 | /** Whether the wire is promiscuous (config). */
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135 | bool fWirePromiscuousEff;
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136 | /** Whether the wire is promiscuous (config).
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137 | * (Shadows INTNET_OPEN_FLAGS_TRUNK_WIRE_PROMISC_MODE in
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138 | * INTNETNETWORK::fFlags.) */
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139 | bool fWirePromiscuousReal;
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140 | /** Whether the wire is active. */
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141 | bool fWireActive;
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142 |
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143 | /** Pointer to the trunk interface. */
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144 | struct INTNETTRUNKIF *pTrunk;
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145 | } INTNETMACTAB;
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146 | /** Pointer to a MAC address . */
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147 | typedef INTNETMACTAB *PINTNETMACTAB;
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148 |
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149 | /**
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150 | * Destination table.
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151 | */
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152 | typedef struct INTNETDSTTAB
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153 | {
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154 | /** The trunk destinations. */
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155 | uint32_t fTrunkDst;
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156 | /** Pointer to the trunk interface (referenced) if fTrunkDst is non-zero. */
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157 | struct INTNETTRUNKIF *pTrunk;
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158 | /** The number of destination interfaces. */
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159 | uint32_t cIfs;
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160 | /** The interfaces (referenced). Variable sized array. */
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161 | struct
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162 | {
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163 | /** The destination interface. */
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164 | struct INTNETIF *pIf;
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165 | /** Whether to replace the destination MAC address.
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166 | * This is used when sharing MAC address with the host on the wire(less). */
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167 | bool fReplaceDstMac;
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168 | } aIfs[1];
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169 | } INTNETDSTTAB;
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170 | /** Pointer to a destination table. */
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171 | typedef INTNETDSTTAB *PINTNETDSTTAB;
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172 | /** Pointer to a const destination table. */
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173 | typedef INTNETDSTTAB const *PCINTNETDSTTAB;
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174 |
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175 | /**
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176 | * Address and type.
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177 | */
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178 | typedef struct INTNETADDR
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179 | {
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180 | /** The address type. */
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181 | INTNETADDRTYPE enmType;
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182 | /** The address. */
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183 | RTNETADDRU Addr;
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184 | } INTNETADDR;
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185 | /** Pointer to an address. */
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186 | typedef INTNETADDR *PINTNETADDR;
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187 | /** Pointer to a const address. */
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188 | typedef INTNETADDR const *PCINTNETADDR;
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189 |
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190 |
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191 | /**
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192 | * Address cache for a specific network layer.
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193 | */
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194 | typedef struct INTNETADDRCACHE
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195 | {
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196 | /** Pointer to the table of addresses. */
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197 | uint8_t *pbEntries;
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198 | /** The number of valid address entries. */
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199 | uint8_t cEntries;
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200 | /** The number of allocated address entries. */
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201 | uint8_t cEntriesAlloc;
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202 | /** The address size. */
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203 | uint8_t cbAddress;
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204 | /** The size of an entry. */
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205 | uint8_t cbEntry;
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206 | } INTNETADDRCACHE;
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207 | /** Pointer to an address cache. */
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208 | typedef INTNETADDRCACHE *PINTNETADDRCACHE;
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209 | /** Pointer to a const address cache. */
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210 | typedef INTNETADDRCACHE const *PCINTNETADDRCACHE;
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211 |
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212 |
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213 | /**
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214 | * A network interface.
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215 | *
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216 | * Unless explicitly stated, all members are protect by the network semaphore.
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217 | */
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218 | typedef struct INTNETIF
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219 | {
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220 | /** The MAC address.
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221 | * This is shadowed by INTNETMACTABENTRY::MacAddr. */
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222 | RTMAC MacAddr;
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223 | /** Set if the INTNET::MacAddr member has been explicitly set. */
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224 | bool fMacSet;
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225 | /** Tracks the desired promiscuous setting of the interface. */
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226 | bool fPromiscuousReal;
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227 | /** Whether the interface is active or not.
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228 | * This is shadowed by INTNETMACTABENTRY::fActive. */
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229 | bool fActive;
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230 | /** Whether someone has indicated that the end is nigh by means of IntNetR0IfAbortWait. */
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231 | bool volatile fNoMoreWaits;
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232 | /** The flags specified when opening this interface. */
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233 | uint32_t fOpenFlags;
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234 | /** Number of yields done to try make the interface read pending data.
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235 | * We will stop yielding when this reaches a threshold assuming that the VM is
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236 | * paused or that it simply isn't worth all the delay. It is cleared when a
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237 | * successful send has been done. */
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238 | uint32_t cYields;
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239 | /** Pointer to the current exchange buffer (ring-0). */
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240 | PINTNETBUF pIntBuf;
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241 | /** Pointer to ring-3 mapping of the current exchange buffer. */
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242 | R3PTRTYPE(PINTNETBUF) pIntBufR3;
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243 | /** Pointer to the default exchange buffer for the interface. */
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244 | PINTNETBUF pIntBufDefault;
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245 | /** Pointer to ring-3 mapping of the default exchange buffer. */
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246 | R3PTRTYPE(PINTNETBUF) pIntBufDefaultR3;
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247 | #if !defined(VBOX_WITH_INTNET_SERVICE_IN_R3) || !defined(IN_RING3)
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248 | /** Event semaphore which a receiver/consumer thread will sleep on while
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249 | * waiting for data to arrive. */
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250 | RTSEMEVENT volatile hRecvEvent;
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251 | /** Number of threads sleeping on the event semaphore. */
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252 | uint32_t volatile cSleepers;
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253 | #else
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254 | /** The callback to call when there is something to receive/consume. */
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255 | PFNINTNETIFRECVAVAIL pfnRecvAvail;
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256 | /** Opaque user data to pass to the receive avail callback (pfnRecvAvail). */
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257 | void *pvUserRecvAvail;
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258 | #endif
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259 | /** The interface handle.
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260 | * When this is INTNET_HANDLE_INVALID a sleeper which is waking up
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261 | * should return with the appropriate error condition. */
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262 | INTNETIFHANDLE volatile hIf;
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263 | /** The native handle of the destructor thread. This is NIL_RTNATIVETHREAD when
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264 | * the object is valid and set when intnetR0IfDestruct is in progress. This is
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265 | * used to cover an unlikely (impossible?) race between SUPDRVSESSION cleanup
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266 | * and lingering threads waiting for recv or similar. */
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267 | RTNATIVETHREAD volatile hDestructorThread;
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268 | /** Pointer to the network this interface is connected to.
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269 | * This is protected by the INTNET::hMtxCreateOpenDestroy. */
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270 | struct INTNETNETWORK *pNetwork;
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271 | /** The session this interface is associated with. */
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272 | PSUPDRVSESSION pSession;
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273 | /** The SUPR0 object id. */
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274 | void *pvObj;
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275 | /** The network layer address cache. (Indexed by type, 0 entry isn't used.)
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276 | * This is protected by the address spinlock of the network. */
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277 | INTNETADDRCACHE aAddrCache[kIntNetAddrType_End];
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278 | /** Spinlock protecting the input (producer) side of the receive ring. */
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279 | RTSPINLOCK hRecvInSpinlock;
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280 | /** Busy count for tracking destination table references and active sends.
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281 | * Usually incremented while owning the switch table spinlock. The 30th bit
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282 | * is used to indicate wakeup. */
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283 | uint32_t volatile cBusy;
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284 | /** The preallocated destination table.
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285 | * This is NULL when it's in use as a precaution against unserialized
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286 | * transmitting. This is grown when new interfaces are added to the network. */
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287 | PINTNETDSTTAB volatile pDstTab;
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288 | /** Pointer to the trunk's per interface data. Can be NULL. */
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289 | void *pvIfData;
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290 | /** Header buffer for when we're carving GSO frames. */
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291 | uint8_t abGsoHdrs[256];
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292 | } INTNETIF;
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293 | /** Pointer to an internal network interface. */
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294 | typedef INTNETIF *PINTNETIF;
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295 |
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296 |
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297 | /**
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298 | * A trunk interface.
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299 | */
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300 | typedef struct INTNETTRUNKIF
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301 | {
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302 | /** The port interface we present to the component. */
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303 | INTNETTRUNKSWPORT SwitchPort;
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304 | /** The port interface we get from the component. */
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305 | PINTNETTRUNKIFPORT pIfPort;
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306 | /** Pointer to the network we're connect to.
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307 | * This may be NULL if we're orphaned? */
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308 | struct INTNETNETWORK *pNetwork;
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309 | /** The current MAC address for the interface. (reported)
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310 | * Updated while owning the switch table spinlock. */
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311 | RTMAC MacAddr;
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312 | /** Whether to supply physical addresses with the outbound SGs. (reported) */
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313 | bool fPhysSG;
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314 | /** Explicit alignment. */
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315 | bool fUnused;
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316 | /** Busy count for tracking destination table references and active sends.
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317 | * Usually incremented while owning the switch table spinlock. The 30th bit
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318 | * is used to indicate wakeup. */
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319 | uint32_t volatile cBusy;
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320 | /** Mask of destinations that pfnXmit cope with disabled preemption for. */
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321 | uint32_t fNoPreemptDsts;
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322 | /** The GSO capabilities of the wire destination. (reported) */
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323 | uint32_t fWireGsoCapabilites;
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324 | /** The GSO capabilities of the host destination. (reported)
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325 | * This is as bit map where each bit represents the GSO type with the same
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326 | * number. */
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327 | uint32_t fHostGsoCapabilites;
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328 | /** The destination table spinlock, interrupt safe.
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329 | * Protects apTaskDstTabs and apIntDstTabs. */
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330 | RTSPINLOCK hDstTabSpinlock;
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331 | /** The number of entries in apIntDstTabs. */
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332 | uint32_t cIntDstTabs;
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333 | /** The task time destination tables.
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334 | * @remarks intnetR0NetworkEnsureTabSpace and others ASSUMES this immediately
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335 | * precedes apIntDstTabs so that these two tables can be used as one
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336 | * contiguous one. */
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337 | PINTNETDSTTAB apTaskDstTabs[2];
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338 | /** The interrupt / disabled-preemption time destination tables.
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339 | * This is a variable sized array. */
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340 | PINTNETDSTTAB apIntDstTabs[1];
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341 | } INTNETTRUNKIF;
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342 | /** Pointer to a trunk interface. */
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343 | typedef INTNETTRUNKIF *PINTNETTRUNKIF;
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344 |
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345 | /** Converts a pointer to INTNETTRUNKIF::SwitchPort to a PINTNETTRUNKIF. */
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346 | #define INTNET_SWITCHPORT_2_TRUNKIF(pSwitchPort) ((PINTNETTRUNKIF)(pSwitchPort))
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347 |
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348 |
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349 | /**
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350 | * Internal representation of a network.
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351 | */
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352 | typedef struct INTNETNETWORK
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353 | {
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354 | /** The Next network in the chain.
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355 | * This is protected by the INTNET::hMtxCreateOpenDestroy. */
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356 | struct INTNETNETWORK *pNext;
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357 |
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358 | /** The spinlock protecting MacTab, aAddrBlacklist and INTNETIF::aAddrCache.
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359 | * Interrupt safe. */
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360 | RTSPINLOCK hAddrSpinlock;
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361 | /** MAC address table.
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362 | * This doubles as interface collection. */
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363 | INTNETMACTAB MacTab;
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364 |
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365 | /** The network layer address cache. (Indexed by type, 0 entry isn't used.
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366 | * Contains host addresses. We don't let guests spoof them. */
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367 | INTNETADDRCACHE aAddrBlacklist[kIntNetAddrType_End];
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368 |
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369 | /** Wait for an interface to stop being busy so it can be removed or have its
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370 | * destination table replaced. We have to wait upon this while owning the
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371 | * network mutex. Will only ever have one waiter because of the big mutex. */
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372 | RTSEMEVENT hEvtBusyIf;
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373 | /** Pointer to the instance data. */
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374 | struct INTNET *pIntNet;
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375 | /** The SUPR0 object id. */
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376 | void *pvObj;
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377 | /** The trunk reconnection system thread. The thread gets started at trunk
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378 | * disconnection. It tries to reconnect the trunk to the bridged filter instance.
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379 | * The thread erases this handle right before it terminates.
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380 | */
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381 | RTTHREAD hTrunkReconnectThread;
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382 | /** Trunk reconnection thread termination flag. */
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383 | bool volatile fTerminateReconnectThread;
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384 | /** Pointer to the temporary buffer that is used when snooping fragmented packets.
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385 | * This is allocated after this structure if we're sharing the MAC address with
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386 | * the host. The buffer is INTNETNETWORK_TMP_SIZE big and aligned on a 64-byte boundary. */
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387 | uint8_t *pbTmp;
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388 | /** Network creation flags (INTNET_OPEN_FLAGS_*). */
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389 | uint32_t fFlags;
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390 | /** Any restrictive policies required as a minimum by some interface.
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391 | * (INTNET_OPEN_FLAGS_REQUIRE_AS_RESTRICTIVE_POLICIES) */
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392 | uint32_t fMinFlags;
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393 | /** The number of active interfaces (excluding the trunk). */
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394 | uint32_t cActiveIFs;
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395 | /** The length of the network name. */
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396 | uint8_t cchName;
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397 | /** The network name. */
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398 | char szName[INTNET_MAX_NETWORK_NAME];
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399 | /** The trunk type. */
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400 | INTNETTRUNKTYPE enmTrunkType;
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401 | /** The trunk name. */
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402 | char szTrunk[INTNET_MAX_TRUNK_NAME];
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403 | } INTNETNETWORK;
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404 | /** Pointer to an internal network. */
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405 | typedef INTNETNETWORK *PINTNETNETWORK;
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406 | /** Pointer to a const internal network. */
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407 | typedef const INTNETNETWORK *PCINTNETNETWORK;
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408 |
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409 | /** The size of the buffer INTNETNETWORK::pbTmp points at. */
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410 | #define INTNETNETWORK_TMP_SIZE 2048
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411 |
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412 |
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413 | /**
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414 | * Internal networking instance.
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415 | */
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416 | typedef struct INTNET
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417 | {
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418 | /** Magic number (INTNET_MAGIC). */
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419 | uint32_t volatile u32Magic;
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420 | /** Mutex protecting the creation, opening and destruction of both networks and
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421 | * interfaces. (This means all operations affecting the pNetworks list.) */
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422 | RTSEMMUTEX hMtxCreateOpenDestroy;
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423 | /** List of networks. Protected by INTNET::Spinlock. */
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424 | PINTNETNETWORK volatile pNetworks;
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425 | /** Handle table for the interfaces. */
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---|
426 | RTHANDLETABLE hHtIfs;
|
---|
427 | } INTNET;
|
---|
428 | /** Pointer to an internal network ring-0 instance. */
|
---|
429 | typedef struct INTNET *PINTNET;
|
---|
430 |
|
---|
431 | /** Magic number for the internal network instance data (Hayao Miyazaki). */
|
---|
432 | #define INTNET_MAGIC UINT32_C(0x19410105)
|
---|
433 |
|
---|
434 |
|
---|
435 | /*********************************************************************************************************************************
|
---|
436 | * Global Variables *
|
---|
437 | *********************************************************************************************************************************/
|
---|
438 | /** Pointer to the internal network instance data. */
|
---|
439 | static PINTNET volatile g_pIntNet = NULL;
|
---|
440 |
|
---|
441 | static const struct INTNETOPENNETWORKFLAGS
|
---|
442 | {
|
---|
443 | uint32_t fRestrictive; /**< The restrictive flag (deny/disabled). */
|
---|
444 | uint32_t fRelaxed; /**< The relaxed flag (allow/enabled). */
|
---|
445 | uint32_t fFixed; /**< The config-fixed flag. */
|
---|
446 | uint32_t fPair; /**< The pair of restrictive and relaxed flags. */
|
---|
447 | }
|
---|
448 | /** Open network policy flags relating to the network. */
|
---|
449 | g_afIntNetOpenNetworkNetFlags[] =
|
---|
450 | {
|
---|
451 | { INTNET_OPEN_FLAGS_ACCESS_RESTRICTED, INTNET_OPEN_FLAGS_ACCESS_PUBLIC, INTNET_OPEN_FLAGS_ACCESS_FIXED, INTNET_OPEN_FLAGS_ACCESS_RESTRICTED | INTNET_OPEN_FLAGS_ACCESS_PUBLIC },
|
---|
452 | { INTNET_OPEN_FLAGS_PROMISC_DENY_CLIENTS, INTNET_OPEN_FLAGS_PROMISC_ALLOW_CLIENTS, INTNET_OPEN_FLAGS_PROMISC_FIXED, INTNET_OPEN_FLAGS_PROMISC_DENY_CLIENTS | INTNET_OPEN_FLAGS_PROMISC_ALLOW_CLIENTS },
|
---|
453 | { INTNET_OPEN_FLAGS_PROMISC_DENY_TRUNK_HOST, INTNET_OPEN_FLAGS_PROMISC_ALLOW_TRUNK_HOST, INTNET_OPEN_FLAGS_PROMISC_FIXED, INTNET_OPEN_FLAGS_PROMISC_DENY_TRUNK_HOST | INTNET_OPEN_FLAGS_PROMISC_ALLOW_TRUNK_HOST },
|
---|
454 | { INTNET_OPEN_FLAGS_PROMISC_DENY_TRUNK_WIRE, INTNET_OPEN_FLAGS_PROMISC_ALLOW_TRUNK_WIRE, INTNET_OPEN_FLAGS_PROMISC_FIXED, INTNET_OPEN_FLAGS_PROMISC_DENY_TRUNK_WIRE | INTNET_OPEN_FLAGS_PROMISC_ALLOW_TRUNK_WIRE },
|
---|
455 | { INTNET_OPEN_FLAGS_TRUNK_HOST_DISABLED, INTNET_OPEN_FLAGS_TRUNK_HOST_ENABLED, INTNET_OPEN_FLAGS_TRUNK_FIXED, INTNET_OPEN_FLAGS_TRUNK_HOST_DISABLED | INTNET_OPEN_FLAGS_TRUNK_HOST_ENABLED },
|
---|
456 | { INTNET_OPEN_FLAGS_TRUNK_HOST_CHASTE_MODE, INTNET_OPEN_FLAGS_TRUNK_HOST_PROMISC_MODE, INTNET_OPEN_FLAGS_TRUNK_FIXED, INTNET_OPEN_FLAGS_TRUNK_HOST_CHASTE_MODE | INTNET_OPEN_FLAGS_TRUNK_HOST_PROMISC_MODE },
|
---|
457 | { INTNET_OPEN_FLAGS_TRUNK_WIRE_DISABLED, INTNET_OPEN_FLAGS_TRUNK_WIRE_ENABLED, INTNET_OPEN_FLAGS_TRUNK_FIXED, INTNET_OPEN_FLAGS_TRUNK_WIRE_DISABLED | INTNET_OPEN_FLAGS_TRUNK_WIRE_ENABLED },
|
---|
458 | { INTNET_OPEN_FLAGS_TRUNK_WIRE_CHASTE_MODE, INTNET_OPEN_FLAGS_TRUNK_WIRE_PROMISC_MODE, INTNET_OPEN_FLAGS_TRUNK_FIXED, INTNET_OPEN_FLAGS_TRUNK_WIRE_CHASTE_MODE | INTNET_OPEN_FLAGS_TRUNK_WIRE_PROMISC_MODE },
|
---|
459 | },
|
---|
460 | /** Open network policy flags relating to the new interface. */
|
---|
461 | g_afIntNetOpenNetworkIfFlags[] =
|
---|
462 | {
|
---|
463 | { INTNET_OPEN_FLAGS_IF_PROMISC_DENY, INTNET_OPEN_FLAGS_IF_PROMISC_ALLOW, INTNET_OPEN_FLAGS_IF_FIXED, INTNET_OPEN_FLAGS_IF_PROMISC_DENY | INTNET_OPEN_FLAGS_IF_PROMISC_ALLOW },
|
---|
464 | { INTNET_OPEN_FLAGS_IF_PROMISC_NO_TRUNK, INTNET_OPEN_FLAGS_IF_PROMISC_SEE_TRUNK, INTNET_OPEN_FLAGS_IF_FIXED, INTNET_OPEN_FLAGS_IF_PROMISC_NO_TRUNK | INTNET_OPEN_FLAGS_IF_PROMISC_SEE_TRUNK },
|
---|
465 | };
|
---|
466 |
|
---|
467 |
|
---|
468 | /*********************************************************************************************************************************
|
---|
469 | * Forward Declarations *
|
---|
470 | *********************************************************************************************************************************/
|
---|
471 | static void intnetR0TrunkIfDestroy(PINTNETTRUNKIF pThis, PINTNETNETWORK pNetwork);
|
---|
472 |
|
---|
473 |
|
---|
474 | /**
|
---|
475 | * Checks if a pointer belongs to the list of known networks without
|
---|
476 | * accessing memory it points to.
|
---|
477 | *
|
---|
478 | * @returns true, if such network is in the list.
|
---|
479 | * @param pIntNet The pointer to the internal network instance (global).
|
---|
480 | * @param pNetwork The pointer that must be validated.
|
---|
481 | */
|
---|
482 | DECLINLINE(bool) intnetR0NetworkIsValid(PINTNET pIntNet, PINTNETNETWORK pNetwork)
|
---|
483 | {
|
---|
484 | for (PINTNETNETWORK pCurr = pIntNet->pNetworks; pCurr; pCurr = pCurr->pNext)
|
---|
485 | if (pCurr == pNetwork)
|
---|
486 | return true;
|
---|
487 | return false;
|
---|
488 | }
|
---|
489 |
|
---|
490 |
|
---|
491 | /**
|
---|
492 | * Worker for intnetR0SgWritePart that deals with the case where the
|
---|
493 | * request doesn't fit into the first segment.
|
---|
494 | *
|
---|
495 | * @returns true, unless the request or SG invalid.
|
---|
496 | * @param pSG The SG list to write to.
|
---|
497 | * @param off Where to start writing (offset into the SG).
|
---|
498 | * @param cb How much to write.
|
---|
499 | * @param pvBuf The buffer to containing the bits to write.
|
---|
500 | */
|
---|
501 | static bool intnetR0SgWritePartSlow(PCINTNETSG pSG, uint32_t off, uint32_t cb, void const *pvBuf)
|
---|
502 | {
|
---|
503 | if (RT_UNLIKELY(off + cb > pSG->cbTotal))
|
---|
504 | return false;
|
---|
505 |
|
---|
506 | /*
|
---|
507 | * Skip ahead to the segment where off starts.
|
---|
508 | */
|
---|
509 | unsigned const cSegs = pSG->cSegsUsed; Assert(cSegs == pSG->cSegsUsed);
|
---|
510 | unsigned iSeg = 0;
|
---|
511 | while (off > pSG->aSegs[iSeg].cb)
|
---|
512 | {
|
---|
513 | off -= pSG->aSegs[iSeg++].cb;
|
---|
514 | AssertReturn(iSeg < cSegs, false);
|
---|
515 | }
|
---|
516 |
|
---|
517 | /*
|
---|
518 | * Copy the data, hoping that it's all from one segment...
|
---|
519 | */
|
---|
520 | uint32_t cbCanCopy = pSG->aSegs[iSeg].cb - off;
|
---|
521 | if (cbCanCopy >= cb)
|
---|
522 | memcpy((uint8_t *)pSG->aSegs[iSeg].pv + off, pvBuf, cb);
|
---|
523 | else
|
---|
524 | {
|
---|
525 | /* copy the portion in the current segment. */
|
---|
526 | memcpy((uint8_t *)pSG->aSegs[iSeg].pv + off, pvBuf, cbCanCopy);
|
---|
527 | cb -= cbCanCopy;
|
---|
528 |
|
---|
529 | /* copy the portions in the other segments. */
|
---|
530 | do
|
---|
531 | {
|
---|
532 | pvBuf = (uint8_t const *)pvBuf + cbCanCopy;
|
---|
533 | iSeg++;
|
---|
534 | AssertReturn(iSeg < cSegs, false);
|
---|
535 |
|
---|
536 | cbCanCopy = RT_MIN(cb, pSG->aSegs[iSeg].cb);
|
---|
537 | memcpy(pSG->aSegs[iSeg].pv, pvBuf, cbCanCopy);
|
---|
538 |
|
---|
539 | cb -= cbCanCopy;
|
---|
540 | } while (cb > 0);
|
---|
541 | }
|
---|
542 |
|
---|
543 | return true;
|
---|
544 | }
|
---|
545 |
|
---|
546 |
|
---|
547 | /**
|
---|
548 | * Writes to a part of an SG.
|
---|
549 | *
|
---|
550 | * @returns true on success, false on failure (out of bounds).
|
---|
551 | * @param pSG The SG list to write to.
|
---|
552 | * @param off Where to start writing (offset into the SG).
|
---|
553 | * @param cb How much to write.
|
---|
554 | * @param pvBuf The buffer to containing the bits to write.
|
---|
555 | */
|
---|
556 | DECLINLINE(bool) intnetR0SgWritePart(PCINTNETSG pSG, uint32_t off, uint32_t cb, void const *pvBuf)
|
---|
557 | {
|
---|
558 | Assert(off + cb > off);
|
---|
559 |
|
---|
560 | /* The optimized case. */
|
---|
561 | if (RT_LIKELY( pSG->cSegsUsed == 1
|
---|
562 | || pSG->aSegs[0].cb >= off + cb))
|
---|
563 | {
|
---|
564 | Assert(pSG->cbTotal == pSG->aSegs[0].cb);
|
---|
565 | memcpy((uint8_t *)pSG->aSegs[0].pv + off, pvBuf, cb);
|
---|
566 | return true;
|
---|
567 | }
|
---|
568 | return intnetR0SgWritePartSlow(pSG, off, cb, pvBuf);
|
---|
569 | }
|
---|
570 |
|
---|
571 |
|
---|
572 | /**
|
---|
573 | * Reads a byte from a SG list.
|
---|
574 | *
|
---|
575 | * @returns The byte on success. 0xff on failure.
|
---|
576 | * @param pSG The SG list to read.
|
---|
577 | * @param off The offset (into the SG) off the byte.
|
---|
578 | */
|
---|
579 | DECLINLINE(uint8_t) intnetR0SgReadByte(PCINTNETSG pSG, uint32_t off)
|
---|
580 | {
|
---|
581 | if (RT_LIKELY(pSG->aSegs[0].cb > off))
|
---|
582 | return ((uint8_t const *)pSG->aSegs[0].pv)[off];
|
---|
583 |
|
---|
584 | off -= pSG->aSegs[0].cb;
|
---|
585 | unsigned const cSegs = pSG->cSegsUsed; Assert(cSegs == pSG->cSegsUsed);
|
---|
586 | for (unsigned iSeg = 1; iSeg < cSegs; iSeg++)
|
---|
587 | {
|
---|
588 | if (pSG->aSegs[iSeg].cb > off)
|
---|
589 | return ((uint8_t const *)pSG->aSegs[iSeg].pv)[off];
|
---|
590 | off -= pSG->aSegs[iSeg].cb;
|
---|
591 | }
|
---|
592 | return false;
|
---|
593 | }
|
---|
594 |
|
---|
595 |
|
---|
596 | /**
|
---|
597 | * Worker for intnetR0SgReadPart that deals with the case where the
|
---|
598 | * requested data isn't in the first segment.
|
---|
599 | *
|
---|
600 | * @returns true, unless the SG is invalid.
|
---|
601 | * @param pSG The SG list to read.
|
---|
602 | * @param off Where to start reading (offset into the SG).
|
---|
603 | * @param cb How much to read.
|
---|
604 | * @param pvBuf The buffer to read into.
|
---|
605 | */
|
---|
606 | static bool intnetR0SgReadPartSlow(PCINTNETSG pSG, uint32_t off, uint32_t cb, void *pvBuf)
|
---|
607 | {
|
---|
608 | if (RT_UNLIKELY(off + cb > pSG->cbTotal))
|
---|
609 | return false;
|
---|
610 |
|
---|
611 | /*
|
---|
612 | * Skip ahead to the segment where off starts.
|
---|
613 | */
|
---|
614 | unsigned const cSegs = pSG->cSegsUsed; Assert(cSegs == pSG->cSegsUsed);
|
---|
615 | unsigned iSeg = 0;
|
---|
616 | while (off > pSG->aSegs[iSeg].cb)
|
---|
617 | {
|
---|
618 | off -= pSG->aSegs[iSeg++].cb;
|
---|
619 | AssertReturn(iSeg < cSegs, false);
|
---|
620 | }
|
---|
621 |
|
---|
622 | /*
|
---|
623 | * Copy the data, hoping that it's all from one segment...
|
---|
624 | */
|
---|
625 | uint32_t cbCanCopy = pSG->aSegs[iSeg].cb - off;
|
---|
626 | if (cbCanCopy >= cb)
|
---|
627 | memcpy(pvBuf, (uint8_t const *)pSG->aSegs[iSeg].pv + off, cb);
|
---|
628 | else
|
---|
629 | {
|
---|
630 | /* copy the portion in the current segment. */
|
---|
631 | memcpy(pvBuf, (uint8_t const *)pSG->aSegs[iSeg].pv + off, cbCanCopy);
|
---|
632 | cb -= cbCanCopy;
|
---|
633 |
|
---|
634 | /* copy the portions in the other segments. */
|
---|
635 | do
|
---|
636 | {
|
---|
637 | pvBuf = (uint8_t *)pvBuf + cbCanCopy;
|
---|
638 | iSeg++;
|
---|
639 | AssertReturn(iSeg < cSegs, false);
|
---|
640 |
|
---|
641 | cbCanCopy = RT_MIN(cb, pSG->aSegs[iSeg].cb);
|
---|
642 | memcpy(pvBuf, (uint8_t const *)pSG->aSegs[iSeg].pv, cbCanCopy);
|
---|
643 |
|
---|
644 | cb -= cbCanCopy;
|
---|
645 | } while (cb > 0);
|
---|
646 | }
|
---|
647 |
|
---|
648 | return true;
|
---|
649 | }
|
---|
650 |
|
---|
651 |
|
---|
652 | /**
|
---|
653 | * Reads a part of an SG into a buffer.
|
---|
654 | *
|
---|
655 | * @returns true on success, false on failure (out of bounds).
|
---|
656 | * @param pSG The SG list to read.
|
---|
657 | * @param off Where to start reading (offset into the SG).
|
---|
658 | * @param cb How much to read.
|
---|
659 | * @param pvBuf The buffer to read into.
|
---|
660 | */
|
---|
661 | DECLINLINE(bool) intnetR0SgReadPart(PCINTNETSG pSG, uint32_t off, uint32_t cb, void *pvBuf)
|
---|
662 | {
|
---|
663 | Assert(off + cb > off);
|
---|
664 |
|
---|
665 | /* The optimized case. */
|
---|
666 | if (RT_LIKELY(pSG->aSegs[0].cb >= off + cb))
|
---|
667 | {
|
---|
668 | AssertMsg(pSG->cbTotal >= pSG->aSegs[0].cb, ("%#x vs %#x\n", pSG->cbTotal, pSG->aSegs[0].cb));
|
---|
669 | memcpy(pvBuf, (uint8_t const *)pSG->aSegs[0].pv + off, cb);
|
---|
670 | return true;
|
---|
671 | }
|
---|
672 | return intnetR0SgReadPartSlow(pSG, off, cb, pvBuf);
|
---|
673 | }
|
---|
674 |
|
---|
675 |
|
---|
676 | /**
|
---|
677 | * Wait for a busy counter to reach zero.
|
---|
678 | *
|
---|
679 | * @param pNetwork The network.
|
---|
680 | * @param pcBusy The busy counter.
|
---|
681 | */
|
---|
682 | static void intnetR0BusyWait(PINTNETNETWORK pNetwork, uint32_t volatile *pcBusy)
|
---|
683 | {
|
---|
684 | if (ASMAtomicReadU32(pcBusy) == 0)
|
---|
685 | return;
|
---|
686 |
|
---|
687 | /*
|
---|
688 | * We have to be a bit cautious here so we don't destroy the network or the
|
---|
689 | * semaphore before intnetR0BusyDec has signalled us.
|
---|
690 | */
|
---|
691 |
|
---|
692 | /* Reset the semaphore and flip the wakeup bit. */
|
---|
693 | RTSemEventWait(pNetwork->hEvtBusyIf, 0); /* clear it */
|
---|
694 | uint32_t cCurBusy = ASMAtomicReadU32(pcBusy);
|
---|
695 | do
|
---|
696 | {
|
---|
697 | if (cCurBusy == 0)
|
---|
698 | return;
|
---|
699 | AssertMsg(!(cCurBusy & INTNET_BUSY_WAKEUP_MASK), ("%#x\n", cCurBusy));
|
---|
700 | AssertMsg((cCurBusy & ~INTNET_BUSY_WAKEUP_MASK) < INTNET_MAX_IFS * 3, ("%#x\n", cCurBusy));
|
---|
701 | } while (!ASMAtomicCmpXchgExU32(pcBusy, cCurBusy | INTNET_BUSY_WAKEUP_MASK, cCurBusy, &cCurBusy));
|
---|
702 |
|
---|
703 | /* Wait for the count to reach zero. */
|
---|
704 | do
|
---|
705 | {
|
---|
706 | int rc2 = RTSemEventWait(pNetwork->hEvtBusyIf, 30000); NOREF(rc2);
|
---|
707 | //AssertMsg(RT_SUCCESS(rc2), ("rc=%Rrc *pcBusy=%#x (%#x)\n", rc2, ASMAtomicReadU32(pcBusy), cCurBusy ));
|
---|
708 | cCurBusy = ASMAtomicReadU32(pcBusy);
|
---|
709 | AssertMsg((cCurBusy & INTNET_BUSY_WAKEUP_MASK), ("%#x\n", cCurBusy));
|
---|
710 | AssertMsg((cCurBusy & ~INTNET_BUSY_WAKEUP_MASK) < INTNET_MAX_IFS * 3, ("%#x\n", cCurBusy));
|
---|
711 | } while ( cCurBusy != INTNET_BUSY_WAKEUP_MASK
|
---|
712 | || !ASMAtomicCmpXchgU32(pcBusy, 0, INTNET_BUSY_WAKEUP_MASK));
|
---|
713 | }
|
---|
714 |
|
---|
715 |
|
---|
716 | /**
|
---|
717 | * Decrements the busy counter and maybe wakes up any threads waiting for it to
|
---|
718 | * reach zero.
|
---|
719 | *
|
---|
720 | * @param pNetwork The network.
|
---|
721 | * @param pcBusy The busy counter.
|
---|
722 | */
|
---|
723 | DECLINLINE(void) intnetR0BusyDec(PINTNETNETWORK pNetwork, uint32_t volatile *pcBusy)
|
---|
724 | {
|
---|
725 | uint32_t cNewBusy = ASMAtomicDecU32(pcBusy);
|
---|
726 | if (RT_UNLIKELY( cNewBusy == INTNET_BUSY_WAKEUP_MASK
|
---|
727 | && pNetwork))
|
---|
728 | RTSemEventSignal(pNetwork->hEvtBusyIf);
|
---|
729 | AssertMsg((cNewBusy & ~INTNET_BUSY_WAKEUP_MASK) < INTNET_MAX_IFS * 3, ("%#x\n", cNewBusy));
|
---|
730 | }
|
---|
731 |
|
---|
732 |
|
---|
733 | /**
|
---|
734 | * Increments the busy count of the specified interface.
|
---|
735 | *
|
---|
736 | * The caller must own the MAC address table spinlock.
|
---|
737 | *
|
---|
738 | * @param pIf The interface.
|
---|
739 | */
|
---|
740 | DECLINLINE(void) intnetR0BusyDecIf(PINTNETIF pIf)
|
---|
741 | {
|
---|
742 | intnetR0BusyDec(pIf->pNetwork, &pIf->cBusy);
|
---|
743 | }
|
---|
744 |
|
---|
745 |
|
---|
746 | /**
|
---|
747 | * Increments the busy count of the specified interface.
|
---|
748 | *
|
---|
749 | * The caller must own the MAC address table spinlock or an explicity reference.
|
---|
750 | *
|
---|
751 | * @param pTrunk The trunk.
|
---|
752 | */
|
---|
753 | DECLINLINE(void) intnetR0BusyDecTrunk(PINTNETTRUNKIF pTrunk)
|
---|
754 | {
|
---|
755 | if (pTrunk)
|
---|
756 | intnetR0BusyDec(pTrunk->pNetwork, &pTrunk->cBusy);
|
---|
757 | }
|
---|
758 |
|
---|
759 |
|
---|
760 | /**
|
---|
761 | * Increments the busy count of the specified interface.
|
---|
762 | *
|
---|
763 | * The caller must own the MAC address table spinlock or an explicity reference.
|
---|
764 | *
|
---|
765 | * @param pIf The interface.
|
---|
766 | */
|
---|
767 | DECLINLINE(void) intnetR0BusyIncIf(PINTNETIF pIf)
|
---|
768 | {
|
---|
769 | uint32_t cNewBusy = ASMAtomicIncU32(&pIf->cBusy);
|
---|
770 | AssertMsg((cNewBusy & ~INTNET_BUSY_WAKEUP_MASK) < INTNET_MAX_IFS * 3, ("%#x\n", cNewBusy));
|
---|
771 | NOREF(cNewBusy);
|
---|
772 | }
|
---|
773 |
|
---|
774 |
|
---|
775 | /**
|
---|
776 | * Increments the busy count of the specified interface.
|
---|
777 | *
|
---|
778 | * The caller must own the MAC address table spinlock or an explicity reference.
|
---|
779 | *
|
---|
780 | * @param pTrunk The trunk.
|
---|
781 | */
|
---|
782 | DECLINLINE(void) intnetR0BusyIncTrunk(PINTNETTRUNKIF pTrunk)
|
---|
783 | {
|
---|
784 | if (!pTrunk) return;
|
---|
785 | uint32_t cNewBusy = ASMAtomicIncU32(&pTrunk->cBusy);
|
---|
786 | AssertMsg((cNewBusy & ~INTNET_BUSY_WAKEUP_MASK) < INTNET_MAX_IFS * 3, ("%#x\n", cNewBusy));
|
---|
787 | NOREF(cNewBusy);
|
---|
788 | }
|
---|
789 |
|
---|
790 |
|
---|
791 | /**
|
---|
792 | * Retain an interface.
|
---|
793 | *
|
---|
794 | * @returns VBox status code, can assume success in most situations.
|
---|
795 | * @param pIf The interface instance.
|
---|
796 | * @param pSession The current session.
|
---|
797 | */
|
---|
798 | DECLINLINE(int) intnetR0IfRetain(PINTNETIF pIf, PSUPDRVSESSION pSession)
|
---|
799 | {
|
---|
800 | Assert(pIf->hDestructorThread == NIL_RTNATIVETHREAD);
|
---|
801 |
|
---|
802 | int rc = SUPR0ObjAddRefEx(pIf->pvObj, pSession, true /* fNoBlocking */);
|
---|
803 | AssertRCReturn(rc, rc);
|
---|
804 |
|
---|
805 | return VINF_SUCCESS;
|
---|
806 | }
|
---|
807 |
|
---|
808 |
|
---|
809 | /**
|
---|
810 | * Release an interface previously retained by intnetR0IfRetain or
|
---|
811 | * by handle lookup/freeing.
|
---|
812 | *
|
---|
813 | * @returns true if destroyed, false if not.
|
---|
814 | * @param pIf The interface instance.
|
---|
815 | * @param pSession The current session.
|
---|
816 | */
|
---|
817 | DECLINLINE(bool) intnetR0IfRelease(PINTNETIF pIf, PSUPDRVSESSION pSession)
|
---|
818 | {
|
---|
819 | Assert(pIf->hDestructorThread == NIL_RTNATIVETHREAD);
|
---|
820 |
|
---|
821 | int rc = SUPR0ObjRelease(pIf->pvObj, pSession);
|
---|
822 | AssertRC(rc);
|
---|
823 |
|
---|
824 | return rc == VINF_OBJECT_DESTROYED;
|
---|
825 | }
|
---|
826 |
|
---|
827 |
|
---|
828 | /**
|
---|
829 | * RTHandleCreateEx callback that retains an object in the
|
---|
830 | * handle table before returning it.
|
---|
831 | *
|
---|
832 | * (Avoids racing the freeing of the handle.)
|
---|
833 | *
|
---|
834 | * @returns VBox status code.
|
---|
835 | * @param hHandleTable The handle table (ignored).
|
---|
836 | * @param pvObj The object (INTNETIF).
|
---|
837 | * @param pvCtx The context (SUPDRVSESSION).
|
---|
838 | * @param pvUser The user context (ignored).
|
---|
839 | */
|
---|
840 | static DECLCALLBACK(int) intnetR0IfRetainHandle(RTHANDLETABLE hHandleTable, void *pvObj, void *pvCtx, void *pvUser)
|
---|
841 | {
|
---|
842 | NOREF(pvUser);
|
---|
843 | NOREF(hHandleTable);
|
---|
844 |
|
---|
845 | PINTNETIF pIf = (PINTNETIF)pvObj;
|
---|
846 | RTNATIVETHREAD hDtorThrd;
|
---|
847 | ASMAtomicUoReadHandle(&pIf->hDestructorThread, &hDtorThrd);
|
---|
848 | if (hDtorThrd == NIL_RTNATIVETHREAD)
|
---|
849 | return intnetR0IfRetain(pIf, (PSUPDRVSESSION)pvCtx);
|
---|
850 |
|
---|
851 | /* Allow intnetR0IfDestruct to call RTHandleTableFreeWithCtx to free
|
---|
852 | the handle, but not even think about retaining a referenceas we don't
|
---|
853 | want to confuse SUPDrv and risk having the destructor called twice. */
|
---|
854 | if (hDtorThrd == RTThreadNativeSelf())
|
---|
855 | return VINF_SUCCESS;
|
---|
856 |
|
---|
857 | return VERR_SEM_DESTROYED;
|
---|
858 | }
|
---|
859 |
|
---|
860 |
|
---|
861 |
|
---|
862 | /**
|
---|
863 | * Checks if the interface has a usable MAC address or not.
|
---|
864 | *
|
---|
865 | * @returns true if MacAddr is usable, false if not.
|
---|
866 | * @param pIf The interface.
|
---|
867 | */
|
---|
868 | DECL_FORCE_INLINE(bool) intnetR0IfHasMacAddr(PINTNETIF pIf)
|
---|
869 | {
|
---|
870 | return pIf->fMacSet || !(pIf->MacAddr.au8[0] & 1);
|
---|
871 | }
|
---|
872 |
|
---|
873 |
|
---|
874 | /**
|
---|
875 | * Locates the MAC address table entry for the given interface.
|
---|
876 | *
|
---|
877 | * The caller holds the MAC address table spinlock, obviously.
|
---|
878 | *
|
---|
879 | * @returns Pointer to the entry on if found, NULL if not.
|
---|
880 | * @param pNetwork The network.
|
---|
881 | * @param pIf The interface.
|
---|
882 | */
|
---|
883 | DECLINLINE(PINTNETMACTABENTRY) intnetR0NetworkFindMacAddrEntry(PINTNETNETWORK pNetwork, PINTNETIF pIf)
|
---|
884 | {
|
---|
885 | uint32_t iIf = pNetwork->MacTab.cEntries;
|
---|
886 | while (iIf-- > 0)
|
---|
887 | {
|
---|
888 | if (pNetwork->MacTab.paEntries[iIf].pIf == pIf)
|
---|
889 | return &pNetwork->MacTab.paEntries[iIf];
|
---|
890 | }
|
---|
891 | return NULL;
|
---|
892 | }
|
---|
893 |
|
---|
894 |
|
---|
895 | /**
|
---|
896 | * Checks if the IPv6 address is a good interface address.
|
---|
897 | * @returns true/false.
|
---|
898 | * @param addr The address, network endian.
|
---|
899 | */
|
---|
900 | DECLINLINE(bool) intnetR0IPv6AddrIsGood(RTNETADDRIPV6 addr)
|
---|
901 | {
|
---|
902 | return !( ( addr.QWords.qw0 == 0 && addr.QWords.qw1 == 0) /* :: */
|
---|
903 | || ( (addr.Words.w0 & RT_H2BE_U16(0xff00)) == RT_H2BE_U16(0xff00)) /* multicast */
|
---|
904 | || ( addr.Words.w0 == 0 && addr.Words.w1 == 0
|
---|
905 | && addr.Words.w2 == 0 && addr.Words.w3 == 0
|
---|
906 | && addr.Words.w4 == 0 && addr.Words.w5 == 0
|
---|
907 | && addr.Words.w6 == 0 && addr.Words.w7 == RT_H2BE_U16(0x0001))); /* ::1 */
|
---|
908 | }
|
---|
909 |
|
---|
910 |
|
---|
911 | #if 0 /* unused */
|
---|
912 | /**
|
---|
913 | * Checks if the IPv4 address is a broadcast address.
|
---|
914 | * @returns true/false.
|
---|
915 | * @param Addr The address, network endian.
|
---|
916 | */
|
---|
917 | DECLINLINE(bool) intnetR0IPv4AddrIsBroadcast(RTNETADDRIPV4 Addr)
|
---|
918 | {
|
---|
919 | /* Just check for 255.255.255.255 atm. */
|
---|
920 | return Addr.u == UINT32_MAX;
|
---|
921 | }
|
---|
922 | #endif /* unused */
|
---|
923 |
|
---|
924 |
|
---|
925 | /**
|
---|
926 | * Checks if the IPv4 address is a good interface address.
|
---|
927 | * @returns true/false.
|
---|
928 | * @param Addr The address, network endian.
|
---|
929 | */
|
---|
930 | DECLINLINE(bool) intnetR0IPv4AddrIsGood(RTNETADDRIPV4 Addr)
|
---|
931 | {
|
---|
932 | /* Usual suspects. */
|
---|
933 | if ( Addr.u == UINT32_MAX /* 255.255.255.255 - broadcast. */
|
---|
934 | || Addr.au8[0] == 0) /* Current network, can be used as source address. */
|
---|
935 | return false;
|
---|
936 |
|
---|
937 | /* Unusual suspects. */
|
---|
938 | if (RT_UNLIKELY( Addr.au8[0] == 127 /* Loopback */
|
---|
939 | || (Addr.au8[0] & 0xf0) == 224 /* Multicast */
|
---|
940 | ))
|
---|
941 | return false;
|
---|
942 | return true;
|
---|
943 | }
|
---|
944 |
|
---|
945 |
|
---|
946 | /**
|
---|
947 | * Gets the address size of a network layer type.
|
---|
948 | *
|
---|
949 | * @returns size in bytes.
|
---|
950 | * @param enmType The type.
|
---|
951 | */
|
---|
952 | DECLINLINE(uint8_t) intnetR0AddrSize(INTNETADDRTYPE enmType)
|
---|
953 | {
|
---|
954 | switch (enmType)
|
---|
955 | {
|
---|
956 | case kIntNetAddrType_IPv4: return 4;
|
---|
957 | case kIntNetAddrType_IPv6: return 16;
|
---|
958 | case kIntNetAddrType_IPX: return 4 + 6;
|
---|
959 | default: AssertFailedReturn(0);
|
---|
960 | }
|
---|
961 | }
|
---|
962 |
|
---|
963 |
|
---|
964 | /**
|
---|
965 | * Compares two address to see if they are equal, assuming naturally align structures.
|
---|
966 | *
|
---|
967 | * @returns true if equal, false if not.
|
---|
968 | * @param pAddr1 The first address.
|
---|
969 | * @param pAddr2 The second address.
|
---|
970 | * @param cbAddr The address size.
|
---|
971 | */
|
---|
972 | DECLINLINE(bool) intnetR0AddrUIsEqualEx(PCRTNETADDRU pAddr1, PCRTNETADDRU pAddr2, uint8_t const cbAddr)
|
---|
973 | {
|
---|
974 | switch (cbAddr)
|
---|
975 | {
|
---|
976 | case 4: /* IPv4 */
|
---|
977 | return pAddr1->au32[0] == pAddr2->au32[0];
|
---|
978 | case 16: /* IPv6 */
|
---|
979 | return pAddr1->au64[0] == pAddr2->au64[0]
|
---|
980 | && pAddr1->au64[1] == pAddr2->au64[1];
|
---|
981 | case 10: /* IPX */
|
---|
982 | return pAddr1->au64[0] == pAddr2->au64[0]
|
---|
983 | && pAddr1->au16[4] == pAddr2->au16[4];
|
---|
984 | default:
|
---|
985 | AssertFailedReturn(false);
|
---|
986 | }
|
---|
987 | }
|
---|
988 |
|
---|
989 |
|
---|
990 | /**
|
---|
991 | * Worker for intnetR0IfAddrCacheLookup that performs the lookup
|
---|
992 | * in the remaining cache entries after the caller has check the
|
---|
993 | * most likely ones.
|
---|
994 | *
|
---|
995 | * @returns -1 if not found, the index of the cache entry if found.
|
---|
996 | * @param pCache The cache.
|
---|
997 | * @param pAddr The address.
|
---|
998 | * @param cbAddr The address size (optimization).
|
---|
999 | */
|
---|
1000 | static int intnetR0IfAddrCacheLookupSlow(PCINTNETADDRCACHE pCache, PCRTNETADDRU pAddr, uint8_t const cbAddr)
|
---|
1001 | {
|
---|
1002 | unsigned i = pCache->cEntries - 2;
|
---|
1003 | uint8_t const *pbEntry = pCache->pbEntries + pCache->cbEntry * i;
|
---|
1004 | while (i >= 1)
|
---|
1005 | {
|
---|
1006 | if (intnetR0AddrUIsEqualEx((PCRTNETADDRU)pbEntry, pAddr, cbAddr))
|
---|
1007 | return i;
|
---|
1008 | pbEntry -= pCache->cbEntry;
|
---|
1009 | i--;
|
---|
1010 | }
|
---|
1011 |
|
---|
1012 | return -1;
|
---|
1013 | }
|
---|
1014 |
|
---|
1015 | /**
|
---|
1016 | * Lookup an address in a cache without any expectations.
|
---|
1017 | *
|
---|
1018 | * @returns -1 if not found, the index of the cache entry if found.
|
---|
1019 | * @param pCache The cache.
|
---|
1020 | * @param pAddr The address.
|
---|
1021 | * @param cbAddr The address size (optimization).
|
---|
1022 | */
|
---|
1023 | DECLINLINE(int) intnetR0IfAddrCacheLookup(PCINTNETADDRCACHE pCache, PCRTNETADDRU pAddr, uint8_t const cbAddr)
|
---|
1024 | {
|
---|
1025 | Assert(pCache->cbAddress == cbAddr);
|
---|
1026 |
|
---|
1027 | /*
|
---|
1028 | * The optimized case is when there is one cache entry and
|
---|
1029 | * it doesn't match.
|
---|
1030 | */
|
---|
1031 | unsigned i = pCache->cEntries;
|
---|
1032 | if ( i > 0
|
---|
1033 | && intnetR0AddrUIsEqualEx((PCRTNETADDRU)pCache->pbEntries, pAddr, cbAddr))
|
---|
1034 | return 0;
|
---|
1035 | if (i <= 1)
|
---|
1036 | return -1;
|
---|
1037 |
|
---|
1038 | /*
|
---|
1039 | * Check the last entry.
|
---|
1040 | */
|
---|
1041 | i--;
|
---|
1042 | if (intnetR0AddrUIsEqualEx((PCRTNETADDRU)(pCache->pbEntries + pCache->cbEntry * i), pAddr, cbAddr))
|
---|
1043 | return i;
|
---|
1044 | if (i <= 1)
|
---|
1045 | return -1;
|
---|
1046 |
|
---|
1047 | return intnetR0IfAddrCacheLookupSlow(pCache, pAddr, cbAddr);
|
---|
1048 | }
|
---|
1049 |
|
---|
1050 |
|
---|
1051 | /** Same as intnetR0IfAddrCacheLookup except we expect the address to be present already. */
|
---|
1052 | DECLINLINE(int) intnetR0IfAddrCacheLookupLikely(PCINTNETADDRCACHE pCache, PCRTNETADDRU pAddr, uint8_t const cbAddr)
|
---|
1053 | {
|
---|
1054 | /** @todo implement this. */
|
---|
1055 | return intnetR0IfAddrCacheLookup(pCache, pAddr, cbAddr);
|
---|
1056 | }
|
---|
1057 |
|
---|
1058 | #if 0 /* unused */
|
---|
1059 |
|
---|
1060 | /**
|
---|
1061 | * Worker for intnetR0IfAddrCacheLookupUnlikely that performs
|
---|
1062 | * the lookup in the remaining cache entries after the caller
|
---|
1063 | * has check the most likely ones.
|
---|
1064 | *
|
---|
1065 | * The routine is expecting not to find the address.
|
---|
1066 | *
|
---|
1067 | * @returns -1 if not found, the index of the cache entry if found.
|
---|
1068 | * @param pCache The cache.
|
---|
1069 | * @param pAddr The address.
|
---|
1070 | * @param cbAddr The address size (optimization).
|
---|
1071 | */
|
---|
1072 | static int intnetR0IfAddrCacheInCacheUnlikelySlow(PCINTNETADDRCACHE pCache, PCRTNETADDRU pAddr, uint8_t const cbAddr)
|
---|
1073 | {
|
---|
1074 | /*
|
---|
1075 | * Perform a full table lookup.
|
---|
1076 | */
|
---|
1077 | unsigned i = pCache->cEntries - 2;
|
---|
1078 | uint8_t const *pbEntry = pCache->pbEntries + pCache->cbEntry * i;
|
---|
1079 | while (i >= 1)
|
---|
1080 | {
|
---|
1081 | if (RT_UNLIKELY(intnetR0AddrUIsEqualEx((PCRTNETADDRU)pbEntry, pAddr, cbAddr)))
|
---|
1082 | return i;
|
---|
1083 | pbEntry -= pCache->cbEntry;
|
---|
1084 | i--;
|
---|
1085 | }
|
---|
1086 |
|
---|
1087 | return -1;
|
---|
1088 | }
|
---|
1089 |
|
---|
1090 |
|
---|
1091 | /**
|
---|
1092 | * Lookup an address in a cache expecting not to find it.
|
---|
1093 | *
|
---|
1094 | * @returns -1 if not found, the index of the cache entry if found.
|
---|
1095 | * @param pCache The cache.
|
---|
1096 | * @param pAddr The address.
|
---|
1097 | * @param cbAddr The address size (optimization).
|
---|
1098 | */
|
---|
1099 | DECLINLINE(int) intnetR0IfAddrCacheLookupUnlikely(PCINTNETADDRCACHE pCache, PCRTNETADDRU pAddr, uint8_t const cbAddr)
|
---|
1100 | {
|
---|
1101 | Assert(pCache->cbAddress == cbAddr);
|
---|
1102 |
|
---|
1103 | /*
|
---|
1104 | * The optimized case is when there is one cache entry and
|
---|
1105 | * it doesn't match.
|
---|
1106 | */
|
---|
1107 | unsigned i = pCache->cEntries;
|
---|
1108 | if (RT_UNLIKELY( i > 0
|
---|
1109 | && intnetR0AddrUIsEqualEx((PCRTNETADDRU)pCache->pbEntries, pAddr, cbAddr)))
|
---|
1110 | return 0;
|
---|
1111 | if (RT_LIKELY(i <= 1))
|
---|
1112 | return -1;
|
---|
1113 |
|
---|
1114 | /*
|
---|
1115 | * Then check the last entry and return if there are just two cache entries.
|
---|
1116 | */
|
---|
1117 | i--;
|
---|
1118 | if (RT_UNLIKELY(intnetR0AddrUIsEqualEx((PCRTNETADDRU)(pCache->pbEntries + pCache->cbEntry * i), pAddr, cbAddr)))
|
---|
1119 | return i;
|
---|
1120 | if (i <= 1)
|
---|
1121 | return -1;
|
---|
1122 |
|
---|
1123 | return intnetR0IfAddrCacheInCacheUnlikelySlow(pCache, pAddr, cbAddr);
|
---|
1124 | }
|
---|
1125 |
|
---|
1126 | #endif /* unused */
|
---|
1127 |
|
---|
1128 |
|
---|
1129 | /**
|
---|
1130 | * Deletes a specific cache entry.
|
---|
1131 | *
|
---|
1132 | * Worker for intnetR0NetworkAddrCacheDelete and intnetR0NetworkAddrCacheDeleteMinusIf.
|
---|
1133 | *
|
---|
1134 | * @param pIf The interface (for logging).
|
---|
1135 | * @param pCache The cache.
|
---|
1136 | * @param iEntry The entry to delete.
|
---|
1137 | * @param pszMsg Log message.
|
---|
1138 | */
|
---|
1139 | static void intnetR0IfAddrCacheDeleteIt(PINTNETIF pIf, PINTNETADDRCACHE pCache, int iEntry, const char *pszMsg)
|
---|
1140 | {
|
---|
1141 | AssertReturnVoid(iEntry < pCache->cEntries);
|
---|
1142 | AssertReturnVoid(iEntry >= 0);
|
---|
1143 | #ifdef LOG_ENABLED
|
---|
1144 | INTNETADDRTYPE enmAddrType = (INTNETADDRTYPE)(uintptr_t)(pCache - &pIf->aAddrCache[0]);
|
---|
1145 | PCRTNETADDRU pAddr = (PCRTNETADDRU)(pCache->pbEntries + iEntry * pCache->cbEntry);
|
---|
1146 | switch (enmAddrType)
|
---|
1147 | {
|
---|
1148 | case kIntNetAddrType_IPv4:
|
---|
1149 | Log(("intnetR0IfAddrCacheDeleteIt: hIf=%#x MAC=%.6Rhxs IPv4 deleted #%d %RTnaipv4 %s\n",
|
---|
1150 | pIf->hIf, &pIf->MacAddr, iEntry, pAddr->IPv4, pszMsg));
|
---|
1151 | break;
|
---|
1152 | case kIntNetAddrType_IPv6:
|
---|
1153 | Log(("intnetR0IfAddrCacheDeleteIt: hIf=%#x MAC=%.6Rhxs IPv6 deleted #%d %RTnaipv6 %s\n",
|
---|
1154 | pIf->hIf, &pIf->MacAddr, iEntry, &pAddr->IPv6, pszMsg));
|
---|
1155 | break;
|
---|
1156 | default:
|
---|
1157 | Log(("intnetR0IfAddrCacheDeleteIt: hIf=%RX32 MAC=%.6Rhxs type=%d #%d %.*Rhxs %s\n",
|
---|
1158 | pIf->hIf, &pIf->MacAddr, enmAddrType, iEntry, pCache->cbAddress, pAddr, pszMsg));
|
---|
1159 | break;
|
---|
1160 | }
|
---|
1161 | #else
|
---|
1162 | RT_NOREF2(pIf, pszMsg);
|
---|
1163 | #endif
|
---|
1164 |
|
---|
1165 | pCache->cEntries--;
|
---|
1166 | if (iEntry < pCache->cEntries)
|
---|
1167 | memmove(pCache->pbEntries + iEntry * pCache->cbEntry,
|
---|
1168 | pCache->pbEntries + (iEntry + 1) * pCache->cbEntry,
|
---|
1169 | (pCache->cEntries - iEntry) * pCache->cbEntry);
|
---|
1170 | }
|
---|
1171 |
|
---|
1172 |
|
---|
1173 | /**
|
---|
1174 | * Deletes an address from the cache, assuming it isn't actually in the cache.
|
---|
1175 | *
|
---|
1176 | * May or may not own the spinlock when calling this.
|
---|
1177 | *
|
---|
1178 | * @param pIf The interface (for logging).
|
---|
1179 | * @param pCache The cache.
|
---|
1180 | * @param pAddr The address.
|
---|
1181 | * @param cbAddr The address size (optimization).
|
---|
1182 | */
|
---|
1183 | DECLINLINE(void) intnetR0IfAddrCacheDelete(PINTNETIF pIf, PINTNETADDRCACHE pCache, PCRTNETADDRU pAddr, uint8_t const cbAddr, const char *pszMsg)
|
---|
1184 | {
|
---|
1185 | int i = intnetR0IfAddrCacheLookup(pCache, pAddr, cbAddr);
|
---|
1186 | if (RT_UNLIKELY(i >= 0))
|
---|
1187 | intnetR0IfAddrCacheDeleteIt(pIf, pCache, i, pszMsg);
|
---|
1188 | }
|
---|
1189 |
|
---|
1190 |
|
---|
1191 | /**
|
---|
1192 | * Deletes the address from all the interface caches.
|
---|
1193 | *
|
---|
1194 | * This is used to remove stale entries that has been reassigned to
|
---|
1195 | * other machines on the network.
|
---|
1196 | *
|
---|
1197 | * @param pNetwork The network.
|
---|
1198 | * @param pAddr The address.
|
---|
1199 | * @param enmType The address type.
|
---|
1200 | * @param cbAddr The address size (optimization).
|
---|
1201 | * @param pszMsg Log message.
|
---|
1202 | */
|
---|
1203 | DECLINLINE(void) intnetR0NetworkAddrCacheDeleteLocked(PINTNETNETWORK pNetwork,
|
---|
1204 | PCRTNETADDRU pAddr, INTNETADDRTYPE enmType,
|
---|
1205 | uint8_t const cbAddr,
|
---|
1206 | const char *pszMsg)
|
---|
1207 | {
|
---|
1208 | uint32_t iIf = pNetwork->MacTab.cEntries;
|
---|
1209 | while (iIf--)
|
---|
1210 | {
|
---|
1211 | PINTNETIF pIf = pNetwork->MacTab.paEntries[iIf].pIf;
|
---|
1212 |
|
---|
1213 | int i = intnetR0IfAddrCacheLookup(&pIf->aAddrCache[enmType], pAddr, cbAddr);
|
---|
1214 | if (RT_UNLIKELY(i >= 0))
|
---|
1215 | intnetR0IfAddrCacheDeleteIt(pIf, &pIf->aAddrCache[enmType], i, pszMsg);
|
---|
1216 | }
|
---|
1217 | }
|
---|
1218 |
|
---|
1219 |
|
---|
1220 | /**
|
---|
1221 | * Deletes the address from all the interface caches.
|
---|
1222 | *
|
---|
1223 | * This is used to remove stale entries that has been reassigned to
|
---|
1224 | * other machines on the network.
|
---|
1225 | *
|
---|
1226 | * @param pNetwork The network.
|
---|
1227 | * @param pAddr The address.
|
---|
1228 | * @param enmType The address type.
|
---|
1229 | * @param cbAddr The address size (optimization).
|
---|
1230 | * @param pszMsg Log message.
|
---|
1231 | */
|
---|
1232 | DECLINLINE(void) intnetR0NetworkAddrCacheDelete(PINTNETNETWORK pNetwork, PCRTNETADDRU pAddr, INTNETADDRTYPE const enmType,
|
---|
1233 | uint8_t const cbAddr, const char *pszMsg)
|
---|
1234 | {
|
---|
1235 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
1236 |
|
---|
1237 | intnetR0NetworkAddrCacheDeleteLocked(pNetwork, pAddr, enmType, cbAddr, pszMsg);
|
---|
1238 |
|
---|
1239 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
1240 | }
|
---|
1241 |
|
---|
1242 |
|
---|
1243 | #if 0 /* unused */
|
---|
1244 | /**
|
---|
1245 | * Deletes the address from all the interface caches except the specified one.
|
---|
1246 | *
|
---|
1247 | * This is used to remove stale entries that has been reassigned to
|
---|
1248 | * other machines on the network.
|
---|
1249 | *
|
---|
1250 | * @param pNetwork The network.
|
---|
1251 | * @param pAddr The address.
|
---|
1252 | * @param enmType The address type.
|
---|
1253 | * @param cbAddr The address size (optimization).
|
---|
1254 | * @param pszMsg Log message.
|
---|
1255 | */
|
---|
1256 | DECLINLINE(void) intnetR0NetworkAddrCacheDeleteMinusIf(PINTNETNETWORK pNetwork, PINTNETIF pIfSender, PCRTNETADDRU pAddr,
|
---|
1257 | INTNETADDRTYPE const enmType, uint8_t const cbAddr, const char *pszMsg)
|
---|
1258 | {
|
---|
1259 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
1260 |
|
---|
1261 | uint32_t iIf = pNetwork->MacTab.cEntries;
|
---|
1262 | while (iIf--)
|
---|
1263 | {
|
---|
1264 | PINTNETIF pIf = pNetwork->MacTab.paEntries[iIf].pIf;
|
---|
1265 | if (pIf != pIfSender)
|
---|
1266 | {
|
---|
1267 | int i = intnetR0IfAddrCacheLookup(&pIf->aAddrCache[enmType], pAddr, cbAddr);
|
---|
1268 | if (RT_UNLIKELY(i >= 0))
|
---|
1269 | intnetR0IfAddrCacheDeleteIt(pIf, &pIf->aAddrCache[enmType], i, pszMsg);
|
---|
1270 | }
|
---|
1271 | }
|
---|
1272 |
|
---|
1273 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
1274 | }
|
---|
1275 | #endif /* unused */
|
---|
1276 |
|
---|
1277 |
|
---|
1278 | /**
|
---|
1279 | * Lookup an address on the network, returning the (first) interface having it
|
---|
1280 | * in its address cache.
|
---|
1281 | *
|
---|
1282 | * @returns Pointer to the interface on success, NULL if not found. The caller
|
---|
1283 | * must release the interface by calling intnetR0BusyDecIf.
|
---|
1284 | * @param pNetwork The network.
|
---|
1285 | * @param pAddr The address to lookup.
|
---|
1286 | * @param enmType The address type.
|
---|
1287 | * @param cbAddr The size of the address.
|
---|
1288 | */
|
---|
1289 | DECLINLINE(PINTNETIF) intnetR0NetworkAddrCacheLookupIf(PINTNETNETWORK pNetwork, PCRTNETADDRU pAddr, INTNETADDRTYPE const enmType, uint8_t const cbAddr)
|
---|
1290 | {
|
---|
1291 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
1292 |
|
---|
1293 | uint32_t iIf = pNetwork->MacTab.cEntries;
|
---|
1294 | while (iIf--)
|
---|
1295 | {
|
---|
1296 | PINTNETIF pIf = pNetwork->MacTab.paEntries[iIf].pIf;
|
---|
1297 | int i = intnetR0IfAddrCacheLookup(&pIf->aAddrCache[enmType], pAddr, cbAddr);
|
---|
1298 | if (i >= 0)
|
---|
1299 | {
|
---|
1300 | intnetR0BusyIncIf(pIf);
|
---|
1301 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
1302 | return pIf;
|
---|
1303 | }
|
---|
1304 | }
|
---|
1305 |
|
---|
1306 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
1307 | return NULL;
|
---|
1308 | }
|
---|
1309 |
|
---|
1310 |
|
---|
1311 | /**
|
---|
1312 | * Look up specified address in the network's blacklist.
|
---|
1313 | *
|
---|
1314 | * @param pNetwork The network.
|
---|
1315 | * @param enmType The address type.
|
---|
1316 | * @param pAddr The address.
|
---|
1317 | */
|
---|
1318 | static bool intnetR0NetworkBlacklistLookup(PINTNETNETWORK pNetwork,
|
---|
1319 | PCRTNETADDRU pAddr, INTNETADDRTYPE enmType)
|
---|
1320 | {
|
---|
1321 | PINTNETADDRCACHE pCache = &pNetwork->aAddrBlacklist[enmType];
|
---|
1322 |
|
---|
1323 | if (RT_UNLIKELY(pCache->cEntriesAlloc == 0))
|
---|
1324 | return false;
|
---|
1325 |
|
---|
1326 | const uint8_t cbAddr = pCache->cbAddress;
|
---|
1327 | Assert(cbAddr == intnetR0AddrSize(enmType));
|
---|
1328 |
|
---|
1329 | for (unsigned i = 0; i < pCache->cEntries; ++i)
|
---|
1330 | {
|
---|
1331 | uint8_t *pbEntry = pCache->pbEntries + pCache->cbEntry * i;
|
---|
1332 | if (intnetR0AddrUIsEqualEx((PCRTNETADDRU)pbEntry, pAddr, cbAddr))
|
---|
1333 | return true;
|
---|
1334 | }
|
---|
1335 |
|
---|
1336 | return false;
|
---|
1337 | }
|
---|
1338 |
|
---|
1339 |
|
---|
1340 | /**
|
---|
1341 | * Deletes specified address from network's blacklist.
|
---|
1342 | *
|
---|
1343 | * @param pNetwork The network.
|
---|
1344 | * @param enmType The address type.
|
---|
1345 | * @param pAddr The address.
|
---|
1346 | */
|
---|
1347 | static void intnetR0NetworkBlacklistDelete(PINTNETNETWORK pNetwork,
|
---|
1348 | PCRTNETADDRU pAddr, INTNETADDRTYPE enmType)
|
---|
1349 | {
|
---|
1350 | PINTNETADDRCACHE pCache = &pNetwork->aAddrBlacklist[enmType];
|
---|
1351 |
|
---|
1352 | if (RT_UNLIKELY(pCache->cEntriesAlloc == 0))
|
---|
1353 | return;
|
---|
1354 |
|
---|
1355 | const uint8_t cbAddr = pCache->cbAddress;
|
---|
1356 | Assert(cbAddr == intnetR0AddrSize(enmType));
|
---|
1357 |
|
---|
1358 | for (unsigned i = 0; i < pCache->cEntries; ++i)
|
---|
1359 | {
|
---|
1360 | uint8_t *pbEntry = pCache->pbEntries + pCache->cbEntry * i;
|
---|
1361 | if (!intnetR0AddrUIsEqualEx((PCRTNETADDRU)pbEntry, pAddr, cbAddr))
|
---|
1362 | continue;
|
---|
1363 |
|
---|
1364 | --pCache->cEntries;
|
---|
1365 | memmove(pCache->pbEntries + i * pCache->cbEntry,
|
---|
1366 | pCache->pbEntries + (i + 1) * pCache->cbEntry,
|
---|
1367 | (pCache->cEntries - i) * pCache->cbEntry);
|
---|
1368 | return;
|
---|
1369 | }
|
---|
1370 | }
|
---|
1371 |
|
---|
1372 |
|
---|
1373 | /**
|
---|
1374 | * Adds specified address from network's blacklist.
|
---|
1375 | *
|
---|
1376 | * @param pNetwork The network.
|
---|
1377 | * @param enmType The address type.
|
---|
1378 | * @param pAddr The address.
|
---|
1379 | */
|
---|
1380 | static void intnetR0NetworkBlacklistAdd(PINTNETNETWORK pNetwork,
|
---|
1381 | PCRTNETADDRU pAddr, INTNETADDRTYPE enmType)
|
---|
1382 | {
|
---|
1383 | PINTNETADDRCACHE pCache = &pNetwork->aAddrBlacklist[enmType];
|
---|
1384 |
|
---|
1385 | if (RT_UNLIKELY(pCache->cEntriesAlloc == 0))
|
---|
1386 | return;
|
---|
1387 |
|
---|
1388 | const uint8_t cbAddr = pCache->cbAddress;
|
---|
1389 | Assert(cbAddr == intnetR0AddrSize(enmType));
|
---|
1390 |
|
---|
1391 | /* lookup */
|
---|
1392 | for (unsigned i = 0; i < pCache->cEntries; ++i)
|
---|
1393 | {
|
---|
1394 | uint8_t *pbEntry = pCache->pbEntries + pCache->cbEntry * i;
|
---|
1395 | if (RT_UNLIKELY(intnetR0AddrUIsEqualEx((PCRTNETADDRU)pbEntry, pAddr, cbAddr)))
|
---|
1396 | return; /* already exists */
|
---|
1397 | }
|
---|
1398 |
|
---|
1399 | if (pCache->cEntries >= pCache->cEntriesAlloc)
|
---|
1400 | {
|
---|
1401 | /* shift */
|
---|
1402 | memmove(pCache->pbEntries, pCache->pbEntries + pCache->cbEntry,
|
---|
1403 | pCache->cbEntry * (pCache->cEntries - 1));
|
---|
1404 | --pCache->cEntries;
|
---|
1405 | }
|
---|
1406 |
|
---|
1407 | Assert(pCache->cEntries < pCache->cEntriesAlloc);
|
---|
1408 |
|
---|
1409 | /* push */
|
---|
1410 | uint8_t *pbEntry = pCache->pbEntries + pCache->cEntries * pCache->cbEntry;
|
---|
1411 | memcpy(pbEntry, pAddr, cbAddr);
|
---|
1412 | memset(pbEntry + pCache->cbAddress, '\0', pCache->cbEntry - cbAddr);
|
---|
1413 | ++pCache->cEntries;
|
---|
1414 |
|
---|
1415 | Assert(pCache->cEntries <= pCache->cEntriesAlloc);
|
---|
1416 | }
|
---|
1417 |
|
---|
1418 |
|
---|
1419 | /**
|
---|
1420 | * Adds an address to the cache, the caller is responsible for making sure it's
|
---|
1421 | * not already in the cache.
|
---|
1422 | *
|
---|
1423 | * The caller must not
|
---|
1424 | *
|
---|
1425 | * @param pIf The interface (for logging).
|
---|
1426 | * @param pCache The address cache.
|
---|
1427 | * @param pAddr The address.
|
---|
1428 | * @param pszMsg log message.
|
---|
1429 | */
|
---|
1430 | static void intnetR0IfAddrCacheAddIt(PINTNETIF pIf, INTNETADDRTYPE enmAddrType, PCRTNETADDRU pAddr,
|
---|
1431 | const char *pszMsg)
|
---|
1432 | {
|
---|
1433 | PINTNETNETWORK pNetwork = pIf->pNetwork;
|
---|
1434 | AssertReturnVoid(pNetwork);
|
---|
1435 |
|
---|
1436 | PINTNETADDRCACHE pCache = &pIf->aAddrCache[enmAddrType];
|
---|
1437 |
|
---|
1438 | #if defined(LOG_ENABLED) || defined(VBOX_STRICT)
|
---|
1439 | const uint8_t cbAddr = pCache->cbAddress;
|
---|
1440 | Assert(cbAddr == intnetR0AddrSize(enmAddrType));
|
---|
1441 | #endif
|
---|
1442 |
|
---|
1443 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
1444 |
|
---|
1445 | bool fBlacklisted = intnetR0NetworkBlacklistLookup(pNetwork, pAddr, enmAddrType);
|
---|
1446 | if (fBlacklisted)
|
---|
1447 | {
|
---|
1448 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
1449 |
|
---|
1450 | #ifdef LOG_ENABLED
|
---|
1451 | switch (enmAddrType)
|
---|
1452 | {
|
---|
1453 | case kIntNetAddrType_IPv4:
|
---|
1454 | Log(("%s: spoofing attempt for %RTnaipv4\n",
|
---|
1455 | __FUNCTION__, pAddr->IPv4));
|
---|
1456 | break;
|
---|
1457 | case kIntNetAddrType_IPv6:
|
---|
1458 | Log(("%s: spoofing attempt for %RTnaipv6\n",
|
---|
1459 | __FUNCTION__, &pAddr->IPv6));
|
---|
1460 | break;
|
---|
1461 | default:
|
---|
1462 | Log(("%s: spoofing attempt for %.*Rhxs (type %d)\n",
|
---|
1463 | __FUNCTION__, cbAddr, pAddr, enmAddrType));
|
---|
1464 | break;
|
---|
1465 | }
|
---|
1466 | #endif
|
---|
1467 | return;
|
---|
1468 | }
|
---|
1469 |
|
---|
1470 | if (RT_UNLIKELY(!pCache->cEntriesAlloc))
|
---|
1471 | {
|
---|
1472 | /* This shouldn't happen*/
|
---|
1473 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
1474 | return;
|
---|
1475 | }
|
---|
1476 |
|
---|
1477 | /* When the table is full, drop the older entry (FIFO). Do proper ageing? */
|
---|
1478 | if (pCache->cEntries >= pCache->cEntriesAlloc)
|
---|
1479 | {
|
---|
1480 | Log(("intnetR0IfAddrCacheAddIt: type=%d replacing %.*Rhxs\n",
|
---|
1481 | (int)(uintptr_t)(pCache - &pIf->aAddrCache[0]), pCache->cbAddress, pCache->pbEntries));
|
---|
1482 | memmove(pCache->pbEntries, pCache->pbEntries + pCache->cbEntry, pCache->cbEntry * (pCache->cEntries - 1));
|
---|
1483 | pCache->cEntries--;
|
---|
1484 | Assert(pCache->cEntries < pCache->cEntriesAlloc);
|
---|
1485 | }
|
---|
1486 |
|
---|
1487 | /*
|
---|
1488 | * Add the new entry to the end of the array.
|
---|
1489 | */
|
---|
1490 | uint8_t *pbEntry = pCache->pbEntries + pCache->cEntries * pCache->cbEntry;
|
---|
1491 | memcpy(pbEntry, pAddr, pCache->cbAddress);
|
---|
1492 | memset(pbEntry + pCache->cbAddress, '\0', pCache->cbEntry - pCache->cbAddress);
|
---|
1493 |
|
---|
1494 | #ifdef LOG_ENABLED
|
---|
1495 | switch (enmAddrType)
|
---|
1496 | {
|
---|
1497 | case kIntNetAddrType_IPv4:
|
---|
1498 | Log(("intnetR0IfAddrCacheAddIt: hIf=%#x MAC=%.6Rhxs IPv4 added #%d %RTnaipv4 %s\n",
|
---|
1499 | pIf->hIf, &pIf->MacAddr, pCache->cEntries, pAddr->IPv4, pszMsg));
|
---|
1500 | break;
|
---|
1501 | case kIntNetAddrType_IPv6:
|
---|
1502 | Log(("intnetR0IfAddrCacheAddIt: hIf=%#x MAC=%.6Rhxs IPv6 added #%d %RTnaipv6 %s\n",
|
---|
1503 | pIf->hIf, &pIf->MacAddr, pCache->cEntries, &pAddr->IPv6, pszMsg));
|
---|
1504 | break;
|
---|
1505 | default:
|
---|
1506 | Log(("intnetR0IfAddrCacheAddIt: hIf=%#x MAC=%.6Rhxs type=%d added #%d %.*Rhxs %s\n",
|
---|
1507 | pIf->hIf, &pIf->MacAddr, enmAddrType, pCache->cEntries, pCache->cbAddress, pAddr, pszMsg));
|
---|
1508 | break;
|
---|
1509 | }
|
---|
1510 | #else
|
---|
1511 | RT_NOREF1(pszMsg);
|
---|
1512 | #endif
|
---|
1513 | pCache->cEntries++;
|
---|
1514 | Assert(pCache->cEntries <= pCache->cEntriesAlloc);
|
---|
1515 |
|
---|
1516 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
1517 | }
|
---|
1518 |
|
---|
1519 |
|
---|
1520 | /**
|
---|
1521 | * A intnetR0IfAddrCacheAdd worker that performs the rest of the lookup.
|
---|
1522 | *
|
---|
1523 | * @param pIf The interface (for logging).
|
---|
1524 | * @param pCache The address cache.
|
---|
1525 | * @param pAddr The address.
|
---|
1526 | * @param cbAddr The size of the address (optimization).
|
---|
1527 | * @param pszMsg Log message.
|
---|
1528 | */
|
---|
1529 | static void intnetR0IfAddrCacheAddSlow(PINTNETIF pIf, INTNETADDRTYPE enmAddrType, PCRTNETADDRU pAddr,
|
---|
1530 | const char *pszMsg)
|
---|
1531 | {
|
---|
1532 | PINTNETADDRCACHE pCache = &pIf->aAddrCache[enmAddrType];
|
---|
1533 |
|
---|
1534 | const uint8_t cbAddr = pCache->cbAddress;
|
---|
1535 | Assert(cbAddr == intnetR0AddrSize(enmAddrType));
|
---|
1536 |
|
---|
1537 | /*
|
---|
1538 | * Check all but the first and last entries, the caller
|
---|
1539 | * has already checked those.
|
---|
1540 | */
|
---|
1541 | int i = pCache->cEntries - 2;
|
---|
1542 | uint8_t const *pbEntry = pCache->pbEntries + pCache->cbEntry;
|
---|
1543 | while (i >= 1)
|
---|
1544 | {
|
---|
1545 | if (RT_LIKELY(intnetR0AddrUIsEqualEx((PCRTNETADDRU)pbEntry, pAddr, cbAddr)))
|
---|
1546 | return;
|
---|
1547 | pbEntry += pCache->cbEntry;
|
---|
1548 | i--;
|
---|
1549 | }
|
---|
1550 |
|
---|
1551 | /*
|
---|
1552 | * Not found, add it.
|
---|
1553 | */
|
---|
1554 | intnetR0IfAddrCacheAddIt(pIf, enmAddrType, pAddr, pszMsg);
|
---|
1555 | }
|
---|
1556 |
|
---|
1557 |
|
---|
1558 | /**
|
---|
1559 | * Adds an address to the cache if it's not already there.
|
---|
1560 | *
|
---|
1561 | * Must not own any spinlocks when calling this function.
|
---|
1562 | *
|
---|
1563 | * @param pIf The interface (for logging).
|
---|
1564 | * @param pCache The address cache.
|
---|
1565 | * @param pAddr The address.
|
---|
1566 | * @param cbAddr The size of the address (optimization).
|
---|
1567 | * @param pszMsg Log message.
|
---|
1568 | */
|
---|
1569 | DECLINLINE(void) intnetR0IfAddrCacheAdd(PINTNETIF pIf, INTNETADDRTYPE enmAddrType, PCRTNETADDRU pAddr,
|
---|
1570 | const char *pszMsg)
|
---|
1571 | {
|
---|
1572 | PINTNETADDRCACHE pCache = &pIf->aAddrCache[enmAddrType];
|
---|
1573 |
|
---|
1574 | const uint8_t cbAddr = pCache->cbAddress;
|
---|
1575 | Assert(cbAddr == intnetR0AddrSize(enmAddrType));
|
---|
1576 |
|
---|
1577 | /*
|
---|
1578 | * The optimized case is when the address the first or last cache entry.
|
---|
1579 | */
|
---|
1580 | unsigned i = pCache->cEntries;
|
---|
1581 | if (RT_LIKELY( i > 0
|
---|
1582 | && ( intnetR0AddrUIsEqualEx((PCRTNETADDRU)pCache->pbEntries, pAddr, cbAddr)
|
---|
1583 | || (i > 1
|
---|
1584 | && intnetR0AddrUIsEqualEx((PCRTNETADDRU)(pCache->pbEntries + pCache->cbEntry * (i-1)), pAddr, cbAddr))) ))
|
---|
1585 | return;
|
---|
1586 |
|
---|
1587 | intnetR0IfAddrCacheAddSlow(pIf, enmAddrType, pAddr, pszMsg);
|
---|
1588 | }
|
---|
1589 |
|
---|
1590 |
|
---|
1591 | /**
|
---|
1592 | * Destroys the specified address cache.
|
---|
1593 | * @param pCache The address cache.
|
---|
1594 | */
|
---|
1595 | static void intnetR0IfAddrCacheDestroy(PINTNETADDRCACHE pCache)
|
---|
1596 | {
|
---|
1597 | void *pvFree = pCache->pbEntries;
|
---|
1598 | pCache->pbEntries = NULL;
|
---|
1599 | pCache->cEntries = 0;
|
---|
1600 | pCache->cEntriesAlloc = 0;
|
---|
1601 | RTMemFree(pvFree);
|
---|
1602 | }
|
---|
1603 |
|
---|
1604 |
|
---|
1605 | /**
|
---|
1606 | * Initialize the address cache for the specified address type.
|
---|
1607 | *
|
---|
1608 | * The cache storage is preallocated and fixed size so that we can handle
|
---|
1609 | * inserts from problematic contexts.
|
---|
1610 | *
|
---|
1611 | * @returns VINF_SUCCESS or VERR_NO_MEMORY.
|
---|
1612 | * @param pCache The cache to initialize.
|
---|
1613 | * @param enmAddrType The address type.
|
---|
1614 | * @param fEnabled Whether the address cache is enabled or not.
|
---|
1615 | */
|
---|
1616 | static int intnetR0IfAddrCacheInit(PINTNETADDRCACHE pCache, INTNETADDRTYPE enmAddrType, bool fEnabled)
|
---|
1617 | {
|
---|
1618 | pCache->cEntries = 0;
|
---|
1619 | pCache->cbAddress = intnetR0AddrSize(enmAddrType);
|
---|
1620 | pCache->cbEntry = RT_ALIGN(pCache->cbAddress, 4);
|
---|
1621 | if (fEnabled)
|
---|
1622 | {
|
---|
1623 | pCache->cEntriesAlloc = 32;
|
---|
1624 | pCache->pbEntries = (uint8_t *)RTMemAllocZ(pCache->cEntriesAlloc * pCache->cbEntry);
|
---|
1625 | if (!pCache->pbEntries)
|
---|
1626 | return VERR_NO_MEMORY;
|
---|
1627 | }
|
---|
1628 | else
|
---|
1629 | {
|
---|
1630 | pCache->cEntriesAlloc = 0;
|
---|
1631 | pCache->pbEntries = NULL;
|
---|
1632 | }
|
---|
1633 | return VINF_SUCCESS;
|
---|
1634 | }
|
---|
1635 |
|
---|
1636 |
|
---|
1637 | /**
|
---|
1638 | * Is it a multicast or broadcast MAC address?
|
---|
1639 | *
|
---|
1640 | * @returns true if multicast, false if not.
|
---|
1641 | * @param pMacAddr The address to inspect.
|
---|
1642 | */
|
---|
1643 | DECL_FORCE_INLINE(bool) intnetR0IsMacAddrMulticast(PCRTMAC pMacAddr)
|
---|
1644 | {
|
---|
1645 | return !!(pMacAddr->au8[0] & 0x01);
|
---|
1646 | }
|
---|
1647 |
|
---|
1648 |
|
---|
1649 | /**
|
---|
1650 | * Is it a dummy MAC address?
|
---|
1651 | *
|
---|
1652 | * We use dummy MAC addresses for interfaces which we don't know the MAC
|
---|
1653 | * address of because they haven't sent anything (learning) or explicitly set
|
---|
1654 | * it.
|
---|
1655 | *
|
---|
1656 | * @returns true if dummy, false if not.
|
---|
1657 | * @param pMacAddr The address to inspect.
|
---|
1658 | */
|
---|
1659 | DECL_FORCE_INLINE(bool) intnetR0IsMacAddrDummy(PCRTMAC pMacAddr)
|
---|
1660 | {
|
---|
1661 | /* The dummy address are broadcast addresses, don't bother check it all. */
|
---|
1662 | return pMacAddr->au16[0] == 0xffff;
|
---|
1663 | }
|
---|
1664 |
|
---|
1665 |
|
---|
1666 | /**
|
---|
1667 | * Compares two MAC addresses.
|
---|
1668 | *
|
---|
1669 | * @returns true if equal, false if not.
|
---|
1670 | * @param pDstAddr1 Address 1.
|
---|
1671 | * @param pDstAddr2 Address 2.
|
---|
1672 | */
|
---|
1673 | DECL_FORCE_INLINE(bool) intnetR0AreMacAddrsEqual(PCRTMAC pDstAddr1, PCRTMAC pDstAddr2)
|
---|
1674 | {
|
---|
1675 | return pDstAddr1->au16[2] == pDstAddr2->au16[2]
|
---|
1676 | && pDstAddr1->au16[1] == pDstAddr2->au16[1]
|
---|
1677 | && pDstAddr1->au16[0] == pDstAddr2->au16[0];
|
---|
1678 | }
|
---|
1679 |
|
---|
1680 |
|
---|
1681 | /**
|
---|
1682 | * Switch a unicast frame based on the network layer address (OSI level 3) and
|
---|
1683 | * return a destination table.
|
---|
1684 | *
|
---|
1685 | * @returns INTNETSWDECISION_DROP, INTNETSWDECISION_TRUNK,
|
---|
1686 | * INTNETSWDECISION_INTNET or INTNETSWDECISION_BROADCAST (misnomer).
|
---|
1687 | * @param pNetwork The network to switch on.
|
---|
1688 | * @param pDstMacAddr The destination MAC address.
|
---|
1689 | * @param enmL3AddrType The level-3 destination address type.
|
---|
1690 | * @param pL3Addr The level-3 destination address.
|
---|
1691 | * @param cbL3Addr The size of the level-3 destination address.
|
---|
1692 | * @param fSrc The frame source (INTNETTRUNKDIR_WIRE).
|
---|
1693 | * @param pDstTab The destination output table.
|
---|
1694 | */
|
---|
1695 | static INTNETSWDECISION intnetR0NetworkSwitchLevel3(PINTNETNETWORK pNetwork, PCRTMAC pDstMacAddr,
|
---|
1696 | INTNETADDRTYPE enmL3AddrType, PCRTNETADDRU pL3Addr, uint8_t cbL3Addr,
|
---|
1697 | uint32_t fSrc, PINTNETDSTTAB pDstTab)
|
---|
1698 | {
|
---|
1699 | Assert(fSrc == INTNETTRUNKDIR_WIRE);
|
---|
1700 |
|
---|
1701 | /*
|
---|
1702 | * Grab the spinlock first and do the switching.
|
---|
1703 | */
|
---|
1704 | PINTNETMACTAB pTab = &pNetwork->MacTab;
|
---|
1705 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
1706 |
|
---|
1707 | pDstTab->fTrunkDst = 0;
|
---|
1708 | pDstTab->pTrunk = 0;
|
---|
1709 | pDstTab->cIfs = 0;
|
---|
1710 |
|
---|
1711 | /* Find exactly matching or promiscuous interfaces. */
|
---|
1712 | uint32_t cExactHits = 0;
|
---|
1713 | uint32_t iIfMac = pTab->cEntries;
|
---|
1714 | while (iIfMac-- > 0)
|
---|
1715 | {
|
---|
1716 | if (pTab->paEntries[iIfMac].fActive)
|
---|
1717 | {
|
---|
1718 | PINTNETIF pIf = pTab->paEntries[iIfMac].pIf; AssertPtr(pIf); Assert(pIf->pNetwork == pNetwork);
|
---|
1719 | bool fExact = intnetR0IfAddrCacheLookup(&pIf->aAddrCache[enmL3AddrType], pL3Addr, cbL3Addr) >= 0;
|
---|
1720 | if (fExact || pTab->paEntries[iIfMac].fPromiscuousSeeTrunk)
|
---|
1721 | {
|
---|
1722 | cExactHits += fExact;
|
---|
1723 |
|
---|
1724 | uint32_t iIfDst = pDstTab->cIfs++;
|
---|
1725 | pDstTab->aIfs[iIfDst].pIf = pIf;
|
---|
1726 | pDstTab->aIfs[iIfDst].fReplaceDstMac = fExact;
|
---|
1727 | intnetR0BusyIncIf(pIf);
|
---|
1728 |
|
---|
1729 | if (fExact)
|
---|
1730 | pDstMacAddr = &pIf->MacAddr; /* Avoids duplicates being sent to the host. */
|
---|
1731 | }
|
---|
1732 | }
|
---|
1733 | }
|
---|
1734 |
|
---|
1735 | /* Network only promicuous mode ifs should see related trunk traffic. */
|
---|
1736 | if ( cExactHits
|
---|
1737 | && fSrc
|
---|
1738 | && pNetwork->MacTab.cPromiscuousNoTrunkEntries)
|
---|
1739 | {
|
---|
1740 | iIfMac = pTab->cEntries;
|
---|
1741 | while (iIfMac-- > 0)
|
---|
1742 | {
|
---|
1743 | if ( pTab->paEntries[iIfMac].fActive
|
---|
1744 | && pTab->paEntries[iIfMac].fPromiscuousEff
|
---|
1745 | && !pTab->paEntries[iIfMac].fPromiscuousSeeTrunk)
|
---|
1746 | {
|
---|
1747 | PINTNETIF pIf = pTab->paEntries[iIfMac].pIf; AssertPtr(pIf); Assert(pIf->pNetwork == pNetwork);
|
---|
1748 | if (intnetR0IfAddrCacheLookup(&pIf->aAddrCache[enmL3AddrType], pL3Addr, cbL3Addr) < 0)
|
---|
1749 | {
|
---|
1750 | uint32_t iIfDst = pDstTab->cIfs++;
|
---|
1751 | pDstTab->aIfs[iIfDst].pIf = pIf;
|
---|
1752 | pDstTab->aIfs[iIfDst].fReplaceDstMac = false;
|
---|
1753 | intnetR0BusyIncIf(pIf);
|
---|
1754 | }
|
---|
1755 | }
|
---|
1756 | }
|
---|
1757 | }
|
---|
1758 |
|
---|
1759 | /* Does it match the host, or is the host promiscuous? */
|
---|
1760 | if (pTab->fHostActive)
|
---|
1761 | {
|
---|
1762 | bool fExact = intnetR0AreMacAddrsEqual(&pTab->HostMac, pDstMacAddr);
|
---|
1763 | if ( fExact
|
---|
1764 | || intnetR0IsMacAddrDummy(&pTab->HostMac)
|
---|
1765 | || pTab->fHostPromiscuousEff)
|
---|
1766 | {
|
---|
1767 | cExactHits += fExact;
|
---|
1768 | pDstTab->fTrunkDst |= INTNETTRUNKDIR_HOST;
|
---|
1769 | }
|
---|
1770 | }
|
---|
1771 |
|
---|
1772 | /* Hit the wire if there are no exact matches or if it's in promiscuous mode. */
|
---|
1773 | if (pTab->fWireActive && (!cExactHits || pTab->fWirePromiscuousEff))
|
---|
1774 | pDstTab->fTrunkDst |= INTNETTRUNKDIR_WIRE;
|
---|
1775 | pDstTab->fTrunkDst &= ~fSrc;
|
---|
1776 | if (pDstTab->fTrunkDst)
|
---|
1777 | {
|
---|
1778 | PINTNETTRUNKIF pTrunk = pTab->pTrunk;
|
---|
1779 | pDstTab->pTrunk = pTrunk;
|
---|
1780 | intnetR0BusyIncTrunk(pTrunk);
|
---|
1781 | }
|
---|
1782 |
|
---|
1783 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
1784 | return pDstTab->cIfs
|
---|
1785 | ? (!pDstTab->fTrunkDst ? INTNETSWDECISION_INTNET : INTNETSWDECISION_BROADCAST)
|
---|
1786 | : (!pDstTab->fTrunkDst ? INTNETSWDECISION_DROP : INTNETSWDECISION_TRUNK);
|
---|
1787 | }
|
---|
1788 |
|
---|
1789 |
|
---|
1790 | /**
|
---|
1791 | * Pre-switch a unicast MAC address.
|
---|
1792 | *
|
---|
1793 | * @returns INTNETSWDECISION_DROP, INTNETSWDECISION_TRUNK,
|
---|
1794 | * INTNETSWDECISION_INTNET or INTNETSWDECISION_BROADCAST (misnomer).
|
---|
1795 | * @param pNetwork The network to switch on.
|
---|
1796 | * @param fSrc The frame source.
|
---|
1797 | * @param pSrcAddr The source address of the frame.
|
---|
1798 | * @param pDstAddr The destination address of the frame.
|
---|
1799 | */
|
---|
1800 | static INTNETSWDECISION intnetR0NetworkPreSwitchUnicast(PINTNETNETWORK pNetwork, uint32_t fSrc, PCRTMAC pSrcAddr,
|
---|
1801 | PCRTMAC pDstAddr)
|
---|
1802 | {
|
---|
1803 | Assert(!intnetR0IsMacAddrMulticast(pDstAddr));
|
---|
1804 | Assert(fSrc);
|
---|
1805 |
|
---|
1806 | /*
|
---|
1807 | * Grab the spinlock first and do the switching.
|
---|
1808 | */
|
---|
1809 | INTNETSWDECISION enmSwDecision = INTNETSWDECISION_BROADCAST;
|
---|
1810 | PINTNETMACTAB pTab = &pNetwork->MacTab;
|
---|
1811 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
1812 |
|
---|
1813 | /* Iterate the internal network interfaces and look for matching source and
|
---|
1814 | destination addresses. */
|
---|
1815 | uint32_t iIfMac = pTab->cEntries;
|
---|
1816 | while (iIfMac-- > 0)
|
---|
1817 | {
|
---|
1818 | if (pTab->paEntries[iIfMac].fActive)
|
---|
1819 | {
|
---|
1820 | /* Unknown interface address? */
|
---|
1821 | if (intnetR0IsMacAddrDummy(&pTab->paEntries[iIfMac].MacAddr))
|
---|
1822 | break;
|
---|
1823 |
|
---|
1824 | /* Paranoia - this shouldn't happen, right? */
|
---|
1825 | if ( pSrcAddr
|
---|
1826 | && intnetR0AreMacAddrsEqual(&pTab->paEntries[iIfMac].MacAddr, pSrcAddr))
|
---|
1827 | break;
|
---|
1828 |
|
---|
1829 | /* Exact match? */
|
---|
1830 | if (intnetR0AreMacAddrsEqual(&pTab->paEntries[iIfMac].MacAddr, pDstAddr))
|
---|
1831 | {
|
---|
1832 | enmSwDecision = pTab->fHostPromiscuousEff && fSrc == INTNETTRUNKDIR_WIRE
|
---|
1833 | ? INTNETSWDECISION_BROADCAST
|
---|
1834 | : INTNETSWDECISION_INTNET;
|
---|
1835 | break;
|
---|
1836 | }
|
---|
1837 | }
|
---|
1838 | }
|
---|
1839 |
|
---|
1840 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
1841 | return enmSwDecision;
|
---|
1842 | }
|
---|
1843 |
|
---|
1844 |
|
---|
1845 | /**
|
---|
1846 | * Switch a unicast MAC address and return a destination table.
|
---|
1847 | *
|
---|
1848 | * @returns INTNETSWDECISION_DROP, INTNETSWDECISION_TRUNK,
|
---|
1849 | * INTNETSWDECISION_INTNET or INTNETSWDECISION_BROADCAST (misnomer).
|
---|
1850 | * @param pNetwork The network to switch on.
|
---|
1851 | * @param fSrc The frame source.
|
---|
1852 | * @param pIfSender The sender interface, NULL if trunk. Used to
|
---|
1853 | * prevent sending an echo to the sender.
|
---|
1854 | * @param pDstAddr The destination address of the frame.
|
---|
1855 | * @param pDstTab The destination output table.
|
---|
1856 | */
|
---|
1857 | static INTNETSWDECISION intnetR0NetworkSwitchUnicast(PINTNETNETWORK pNetwork, uint32_t fSrc, PINTNETIF pIfSender,
|
---|
1858 | PCRTMAC pDstAddr, PINTNETDSTTAB pDstTab)
|
---|
1859 | {
|
---|
1860 | AssertPtr(pDstTab);
|
---|
1861 | Assert(!intnetR0IsMacAddrMulticast(pDstAddr));
|
---|
1862 |
|
---|
1863 | /*
|
---|
1864 | * Grab the spinlock first and do the switching.
|
---|
1865 | */
|
---|
1866 | PINTNETMACTAB pTab = &pNetwork->MacTab;
|
---|
1867 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
1868 |
|
---|
1869 | pDstTab->fTrunkDst = 0;
|
---|
1870 | pDstTab->pTrunk = 0;
|
---|
1871 | pDstTab->cIfs = 0;
|
---|
1872 |
|
---|
1873 | /* Find exactly matching or promiscuous interfaces. */
|
---|
1874 | uint32_t cExactHits = 0;
|
---|
1875 | uint32_t iIfMac = pTab->cEntries;
|
---|
1876 | while (iIfMac-- > 0)
|
---|
1877 | {
|
---|
1878 | if (pTab->paEntries[iIfMac].fActive)
|
---|
1879 | {
|
---|
1880 | bool fExact = intnetR0AreMacAddrsEqual(&pTab->paEntries[iIfMac].MacAddr, pDstAddr);
|
---|
1881 | if ( fExact
|
---|
1882 | || intnetR0IsMacAddrDummy(&pTab->paEntries[iIfMac].MacAddr)
|
---|
1883 | || ( pTab->paEntries[iIfMac].fPromiscuousSeeTrunk
|
---|
1884 | || (!fSrc && pTab->paEntries[iIfMac].fPromiscuousEff) )
|
---|
1885 | )
|
---|
1886 | {
|
---|
1887 | cExactHits += fExact;
|
---|
1888 |
|
---|
1889 | PINTNETIF pIf = pTab->paEntries[iIfMac].pIf; AssertPtr(pIf); Assert(pIf->pNetwork == pNetwork);
|
---|
1890 | if (RT_LIKELY(pIf != pIfSender)) /* paranoia */
|
---|
1891 | {
|
---|
1892 | uint32_t iIfDst = pDstTab->cIfs++;
|
---|
1893 | pDstTab->aIfs[iIfDst].pIf = pIf;
|
---|
1894 | pDstTab->aIfs[iIfDst].fReplaceDstMac = false;
|
---|
1895 | intnetR0BusyIncIf(pIf);
|
---|
1896 | }
|
---|
1897 | }
|
---|
1898 | }
|
---|
1899 | }
|
---|
1900 |
|
---|
1901 | /* Network only promicuous mode ifs should see related trunk traffic. */
|
---|
1902 | if ( cExactHits
|
---|
1903 | && fSrc
|
---|
1904 | && pNetwork->MacTab.cPromiscuousNoTrunkEntries)
|
---|
1905 | {
|
---|
1906 | iIfMac = pTab->cEntries;
|
---|
1907 | while (iIfMac-- > 0)
|
---|
1908 | {
|
---|
1909 | if ( pTab->paEntries[iIfMac].fPromiscuousEff
|
---|
1910 | && !pTab->paEntries[iIfMac].fPromiscuousSeeTrunk
|
---|
1911 | && pTab->paEntries[iIfMac].fActive
|
---|
1912 | && !intnetR0AreMacAddrsEqual(&pTab->paEntries[iIfMac].MacAddr, pDstAddr)
|
---|
1913 | && !intnetR0IsMacAddrDummy(&pTab->paEntries[iIfMac].MacAddr) )
|
---|
1914 | {
|
---|
1915 | PINTNETIF pIf = pTab->paEntries[iIfMac].pIf; AssertPtr(pIf); Assert(pIf->pNetwork == pNetwork);
|
---|
1916 | uint32_t iIfDst = pDstTab->cIfs++;
|
---|
1917 | pDstTab->aIfs[iIfDst].pIf = pIf;
|
---|
1918 | pDstTab->aIfs[iIfDst].fReplaceDstMac = false;
|
---|
1919 | intnetR0BusyIncIf(pIf);
|
---|
1920 | }
|
---|
1921 | }
|
---|
1922 | }
|
---|
1923 |
|
---|
1924 | /* Does it match the host, or is the host promiscuous? */
|
---|
1925 | if ( fSrc != INTNETTRUNKDIR_HOST
|
---|
1926 | && pTab->fHostActive)
|
---|
1927 | {
|
---|
1928 | bool fExact = intnetR0AreMacAddrsEqual(&pTab->HostMac, pDstAddr);
|
---|
1929 | if ( fExact
|
---|
1930 | || intnetR0IsMacAddrDummy(&pTab->HostMac)
|
---|
1931 | || pTab->fHostPromiscuousEff)
|
---|
1932 | {
|
---|
1933 | cExactHits += fExact;
|
---|
1934 | pDstTab->fTrunkDst |= INTNETTRUNKDIR_HOST;
|
---|
1935 | }
|
---|
1936 | }
|
---|
1937 |
|
---|
1938 | /* Hit the wire if there are no exact matches or if it's in promiscuous mode. */
|
---|
1939 | if ( fSrc != INTNETTRUNKDIR_WIRE
|
---|
1940 | && pTab->fWireActive
|
---|
1941 | && (!cExactHits || pTab->fWirePromiscuousEff)
|
---|
1942 | )
|
---|
1943 | pDstTab->fTrunkDst |= INTNETTRUNKDIR_WIRE;
|
---|
1944 |
|
---|
1945 | /* Grab the trunk if we're sending to it. */
|
---|
1946 | if (pDstTab->fTrunkDst)
|
---|
1947 | {
|
---|
1948 | PINTNETTRUNKIF pTrunk = pTab->pTrunk;
|
---|
1949 | pDstTab->pTrunk = pTrunk;
|
---|
1950 | intnetR0BusyIncTrunk(pTrunk);
|
---|
1951 | }
|
---|
1952 |
|
---|
1953 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
1954 | return pDstTab->cIfs
|
---|
1955 | ? (!pDstTab->fTrunkDst ? INTNETSWDECISION_INTNET : INTNETSWDECISION_BROADCAST)
|
---|
1956 | : (!pDstTab->fTrunkDst ? INTNETSWDECISION_DROP : INTNETSWDECISION_TRUNK);
|
---|
1957 | }
|
---|
1958 |
|
---|
1959 |
|
---|
1960 | /**
|
---|
1961 | * Create a destination table for a broadcast frame.
|
---|
1962 | *
|
---|
1963 | * @returns INTNETSWDECISION_BROADCAST.
|
---|
1964 | * @param pNetwork The network to switch on.
|
---|
1965 | * @param fSrc The frame source.
|
---|
1966 | * @param pIfSender The sender interface, NULL if trunk. Used to
|
---|
1967 | * prevent sending an echo to the sender.
|
---|
1968 | * @param pDstTab The destination output table.
|
---|
1969 | */
|
---|
1970 | static INTNETSWDECISION intnetR0NetworkSwitchBroadcast(PINTNETNETWORK pNetwork, uint32_t fSrc, PINTNETIF pIfSender,
|
---|
1971 | PINTNETDSTTAB pDstTab)
|
---|
1972 | {
|
---|
1973 | AssertPtr(pDstTab);
|
---|
1974 |
|
---|
1975 | /*
|
---|
1976 | * Grab the spinlock first and record all active interfaces.
|
---|
1977 | */
|
---|
1978 | PINTNETMACTAB pTab = &pNetwork->MacTab;
|
---|
1979 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
1980 |
|
---|
1981 | pDstTab->fTrunkDst = 0;
|
---|
1982 | pDstTab->pTrunk = 0;
|
---|
1983 | pDstTab->cIfs = 0;
|
---|
1984 |
|
---|
1985 | /* Regular interfaces. */
|
---|
1986 | uint32_t iIfMac = pTab->cEntries;
|
---|
1987 | while (iIfMac-- > 0)
|
---|
1988 | {
|
---|
1989 | if (pTab->paEntries[iIfMac].fActive)
|
---|
1990 | {
|
---|
1991 | PINTNETIF pIf = pTab->paEntries[iIfMac].pIf; AssertPtr(pIf); Assert(pIf->pNetwork == pNetwork);
|
---|
1992 | if (pIf != pIfSender)
|
---|
1993 | {
|
---|
1994 | uint32_t iIfDst = pDstTab->cIfs++;
|
---|
1995 | pDstTab->aIfs[iIfDst].pIf = pIf;
|
---|
1996 | pDstTab->aIfs[iIfDst].fReplaceDstMac = false;
|
---|
1997 | intnetR0BusyIncIf(pIf);
|
---|
1998 | }
|
---|
1999 | }
|
---|
2000 | }
|
---|
2001 |
|
---|
2002 | /* The trunk interface. */
|
---|
2003 | if (pTab->fHostActive)
|
---|
2004 | pDstTab->fTrunkDst |= INTNETTRUNKDIR_HOST;
|
---|
2005 | if (pTab->fWireActive)
|
---|
2006 | pDstTab->fTrunkDst |= INTNETTRUNKDIR_WIRE;
|
---|
2007 | pDstTab->fTrunkDst &= ~fSrc;
|
---|
2008 | if (pDstTab->fTrunkDst)
|
---|
2009 | {
|
---|
2010 | PINTNETTRUNKIF pTrunk = pTab->pTrunk;
|
---|
2011 | pDstTab->pTrunk = pTrunk;
|
---|
2012 | intnetR0BusyIncTrunk(pTrunk);
|
---|
2013 | }
|
---|
2014 |
|
---|
2015 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
2016 | return INTNETSWDECISION_BROADCAST;
|
---|
2017 | }
|
---|
2018 |
|
---|
2019 |
|
---|
2020 | /**
|
---|
2021 | * Create a destination table with the trunk and any promiscuous interfaces.
|
---|
2022 | *
|
---|
2023 | * This is only used in a fallback case of the level-3 switching, so we can
|
---|
2024 | * assume the wire as source and skip the sender interface filtering.
|
---|
2025 | *
|
---|
2026 | * @returns INTNETSWDECISION_DROP, INTNETSWDECISION_TRUNK,
|
---|
2027 | * INTNETSWDECISION_INTNET or INTNETSWDECISION_BROADCAST (misnomer).
|
---|
2028 | * @param pNetwork The network to switch on.
|
---|
2029 | * @param fSrc The frame source.
|
---|
2030 | * @param pDstTab The destination output table.
|
---|
2031 | */
|
---|
2032 | static INTNETSWDECISION intnetR0NetworkSwitchTrunkAndPromisc(PINTNETNETWORK pNetwork, uint32_t fSrc, PINTNETDSTTAB pDstTab)
|
---|
2033 | {
|
---|
2034 | Assert(fSrc == INTNETTRUNKDIR_WIRE);
|
---|
2035 |
|
---|
2036 | /*
|
---|
2037 | * Grab the spinlock first and do the switching.
|
---|
2038 | */
|
---|
2039 | PINTNETMACTAB pTab = &pNetwork->MacTab;
|
---|
2040 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
2041 |
|
---|
2042 | pDstTab->fTrunkDst = 0;
|
---|
2043 | pDstTab->pTrunk = 0;
|
---|
2044 | pDstTab->cIfs = 0;
|
---|
2045 |
|
---|
2046 | /* Find promiscuous interfaces. */
|
---|
2047 | uint32_t iIfMac = pTab->cEntries;
|
---|
2048 | while (iIfMac-- > 0)
|
---|
2049 | {
|
---|
2050 | if ( pTab->paEntries[iIfMac].fActive
|
---|
2051 | && ( pTab->paEntries[iIfMac].fPromiscuousSeeTrunk
|
---|
2052 | || (!fSrc && pTab->paEntries[iIfMac].fPromiscuousEff) )
|
---|
2053 | )
|
---|
2054 | {
|
---|
2055 | PINTNETIF pIf = pTab->paEntries[iIfMac].pIf; AssertPtr(pIf); Assert(pIf->pNetwork == pNetwork);
|
---|
2056 | uint32_t iIfDst = pDstTab->cIfs++;
|
---|
2057 | pDstTab->aIfs[iIfDst].pIf = pIf;
|
---|
2058 | pDstTab->aIfs[iIfDst].fReplaceDstMac = false;
|
---|
2059 | intnetR0BusyIncIf(pIf);
|
---|
2060 | }
|
---|
2061 | }
|
---|
2062 |
|
---|
2063 | /* The trunk interface. */
|
---|
2064 | if (pTab->fHostActive)
|
---|
2065 | pDstTab->fTrunkDst |= INTNETTRUNKDIR_HOST;
|
---|
2066 | if (pTab->fWireActive)
|
---|
2067 | pDstTab->fTrunkDst |= INTNETTRUNKDIR_WIRE;
|
---|
2068 | pDstTab->fTrunkDst &= ~fSrc;
|
---|
2069 | if (pDstTab->fTrunkDst)
|
---|
2070 | {
|
---|
2071 | PINTNETTRUNKIF pTrunk = pTab->pTrunk;
|
---|
2072 | pDstTab->pTrunk = pTrunk;
|
---|
2073 | intnetR0BusyIncTrunk(pTrunk);
|
---|
2074 | }
|
---|
2075 |
|
---|
2076 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
2077 | return !pDstTab->cIfs
|
---|
2078 | ? (!pDstTab->fTrunkDst ? INTNETSWDECISION_DROP : INTNETSWDECISION_TRUNK)
|
---|
2079 | : (!pDstTab->fTrunkDst ? INTNETSWDECISION_INTNET : INTNETSWDECISION_BROADCAST);
|
---|
2080 | }
|
---|
2081 |
|
---|
2082 |
|
---|
2083 | /**
|
---|
2084 | * Create a destination table for a trunk frame.
|
---|
2085 | *
|
---|
2086 | * @returns INTNETSWDECISION_BROADCAST.
|
---|
2087 | * @param pNetwork The network to switch on.
|
---|
2088 | * @param fSrc The frame source.
|
---|
2089 | * @param pDstTab The destination output table.
|
---|
2090 | */
|
---|
2091 | static INTNETSWDECISION intnetR0NetworkSwitchTrunk(PINTNETNETWORK pNetwork, uint32_t fSrc, PINTNETDSTTAB pDstTab)
|
---|
2092 | {
|
---|
2093 | AssertPtr(pDstTab);
|
---|
2094 |
|
---|
2095 | /*
|
---|
2096 | * Grab the spinlock first and record all active interfaces.
|
---|
2097 | */
|
---|
2098 | PINTNETMACTAB pTab= &pNetwork->MacTab;
|
---|
2099 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
2100 |
|
---|
2101 | pDstTab->fTrunkDst = 0;
|
---|
2102 | pDstTab->pTrunk = 0;
|
---|
2103 | pDstTab->cIfs = 0;
|
---|
2104 |
|
---|
2105 | /* The trunk interface. */
|
---|
2106 | if (pTab->fHostActive)
|
---|
2107 | pDstTab->fTrunkDst |= INTNETTRUNKDIR_HOST;
|
---|
2108 | if (pTab->fWireActive)
|
---|
2109 | pDstTab->fTrunkDst |= INTNETTRUNKDIR_WIRE;
|
---|
2110 | pDstTab->fTrunkDst &= ~fSrc;
|
---|
2111 | if (pDstTab->fTrunkDst)
|
---|
2112 | {
|
---|
2113 | PINTNETTRUNKIF pTrunk = pTab->pTrunk;
|
---|
2114 | pDstTab->pTrunk = pTrunk;
|
---|
2115 | intnetR0BusyIncTrunk(pTrunk);
|
---|
2116 | }
|
---|
2117 |
|
---|
2118 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
2119 | return pDstTab->fTrunkDst ? INTNETSWDECISION_TRUNK : INTNETSWDECISION_DROP;
|
---|
2120 | }
|
---|
2121 |
|
---|
2122 |
|
---|
2123 | /**
|
---|
2124 | * Wrapper around RTMemAlloc for allocating a destination table.
|
---|
2125 | *
|
---|
2126 | * @returns VINF_SUCCESS or VERR_NO_MEMORY.
|
---|
2127 | * @param cEntries The size given as an entry count.
|
---|
2128 | * @param ppDstTab Where to store the pointer (always).
|
---|
2129 | */
|
---|
2130 | DECLINLINE(int) intnetR0AllocDstTab(uint32_t cEntries, PINTNETDSTTAB *ppDstTab)
|
---|
2131 | {
|
---|
2132 | PINTNETDSTTAB pDstTab;
|
---|
2133 | *ppDstTab = pDstTab = (PINTNETDSTTAB)RTMemAlloc(RT_UOFFSETOF_DYN(INTNETDSTTAB, aIfs[cEntries]));
|
---|
2134 | if (RT_UNLIKELY(!pDstTab))
|
---|
2135 | return VERR_NO_MEMORY;
|
---|
2136 | return VINF_SUCCESS;
|
---|
2137 | }
|
---|
2138 |
|
---|
2139 |
|
---|
2140 | /**
|
---|
2141 | * Ensures that there is space for another interface in the MAC address lookup
|
---|
2142 | * table as well as all the destination tables.
|
---|
2143 | *
|
---|
2144 | * The caller must own the create/open/destroy mutex.
|
---|
2145 | *
|
---|
2146 | * @returns VINF_SUCCESS, VERR_NO_MEMORY or VERR_OUT_OF_RANGE.
|
---|
2147 | * @param pNetwork The network to operate on.
|
---|
2148 | */
|
---|
2149 | static int intnetR0NetworkEnsureTabSpace(PINTNETNETWORK pNetwork)
|
---|
2150 | {
|
---|
2151 | /*
|
---|
2152 | * The cEntries and cEntriesAllocated members are only updated while
|
---|
2153 | * owning the big mutex, so we only need the spinlock when doing the
|
---|
2154 | * actual table replacing.
|
---|
2155 | */
|
---|
2156 | PINTNETMACTAB pTab = &pNetwork->MacTab;
|
---|
2157 | int rc = VINF_SUCCESS;
|
---|
2158 | AssertReturn(pTab->cEntries <= pTab->cEntriesAllocated, VERR_INTERNAL_ERROR_2);
|
---|
2159 | if (pTab->cEntries + 1 > pTab->cEntriesAllocated)
|
---|
2160 | {
|
---|
2161 | uint32_t const cAllocated = pTab->cEntriesAllocated + INTNET_GROW_DSTTAB_SIZE;
|
---|
2162 | if (cAllocated <= INTNET_MAX_IFS)
|
---|
2163 | {
|
---|
2164 | /*
|
---|
2165 | * Resize the destination tables first, this can be kind of tedious.
|
---|
2166 | */
|
---|
2167 | for (uint32_t i = 0; i < pTab->cEntries; i++)
|
---|
2168 | {
|
---|
2169 | PINTNETIF pIf = pTab->paEntries[i].pIf; AssertPtr(pIf);
|
---|
2170 | PINTNETDSTTAB pNew;
|
---|
2171 | rc = intnetR0AllocDstTab(cAllocated, &pNew);
|
---|
2172 | if (RT_FAILURE(rc))
|
---|
2173 | break;
|
---|
2174 |
|
---|
2175 | for (;;)
|
---|
2176 | {
|
---|
2177 | PINTNETDSTTAB pOld = pIf->pDstTab;
|
---|
2178 | if ( pOld
|
---|
2179 | && ASMAtomicCmpXchgPtr(&pIf->pDstTab, pNew, pOld))
|
---|
2180 | {
|
---|
2181 | RTMemFree(pOld);
|
---|
2182 | break;
|
---|
2183 | }
|
---|
2184 | intnetR0BusyWait(pNetwork, &pIf->cBusy);
|
---|
2185 | }
|
---|
2186 | }
|
---|
2187 |
|
---|
2188 | /*
|
---|
2189 | * The trunk.
|
---|
2190 | */
|
---|
2191 | if ( RT_SUCCESS(rc)
|
---|
2192 | && pNetwork->MacTab.pTrunk)
|
---|
2193 | {
|
---|
2194 | AssertCompileAdjacentMembers(INTNETTRUNKIF, apTaskDstTabs, apIntDstTabs);
|
---|
2195 | PINTNETTRUNKIF pTrunk = pNetwork->MacTab.pTrunk;
|
---|
2196 | PINTNETDSTTAB * const ppEndDstTab = &pTrunk->apIntDstTabs[pTrunk->cIntDstTabs];
|
---|
2197 | for (PINTNETDSTTAB *ppDstTab = &pTrunk->apTaskDstTabs[0];
|
---|
2198 | ppDstTab != ppEndDstTab && RT_SUCCESS(rc);
|
---|
2199 | ppDstTab++)
|
---|
2200 | {
|
---|
2201 | PINTNETDSTTAB pNew;
|
---|
2202 | rc = intnetR0AllocDstTab(cAllocated, &pNew);
|
---|
2203 | if (RT_FAILURE(rc))
|
---|
2204 | break;
|
---|
2205 |
|
---|
2206 | for (;;)
|
---|
2207 | {
|
---|
2208 | RTSpinlockAcquire(pTrunk->hDstTabSpinlock);
|
---|
2209 | void *pvOld = *ppDstTab;
|
---|
2210 | if (pvOld)
|
---|
2211 | *ppDstTab = pNew;
|
---|
2212 | RTSpinlockRelease(pTrunk->hDstTabSpinlock);
|
---|
2213 | if (pvOld)
|
---|
2214 | {
|
---|
2215 | RTMemFree(pvOld);
|
---|
2216 | break;
|
---|
2217 | }
|
---|
2218 | intnetR0BusyWait(pNetwork, &pTrunk->cBusy);
|
---|
2219 | }
|
---|
2220 | }
|
---|
2221 | }
|
---|
2222 |
|
---|
2223 | /*
|
---|
2224 | * The MAC Address table itself.
|
---|
2225 | */
|
---|
2226 | if (RT_SUCCESS(rc))
|
---|
2227 | {
|
---|
2228 | PINTNETMACTABENTRY paNew = (PINTNETMACTABENTRY)RTMemAlloc(sizeof(INTNETMACTABENTRY) * cAllocated);
|
---|
2229 | if (paNew)
|
---|
2230 | {
|
---|
2231 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
2232 |
|
---|
2233 | PINTNETMACTABENTRY paOld = pTab->paEntries;
|
---|
2234 | uint32_t i = pTab->cEntries;
|
---|
2235 | while (i-- > 0)
|
---|
2236 | {
|
---|
2237 | paNew[i] = paOld[i];
|
---|
2238 |
|
---|
2239 | paOld[i].fActive = false;
|
---|
2240 | paOld[i].pIf = NULL;
|
---|
2241 | }
|
---|
2242 |
|
---|
2243 | pTab->paEntries = paNew;
|
---|
2244 | pTab->cEntriesAllocated = cAllocated;
|
---|
2245 |
|
---|
2246 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
2247 |
|
---|
2248 | RTMemFree(paOld);
|
---|
2249 | }
|
---|
2250 | else
|
---|
2251 | rc = VERR_NO_MEMORY;
|
---|
2252 | }
|
---|
2253 | }
|
---|
2254 | else
|
---|
2255 | rc = VERR_OUT_OF_RANGE;
|
---|
2256 | }
|
---|
2257 | return rc;
|
---|
2258 | }
|
---|
2259 |
|
---|
2260 |
|
---|
2261 |
|
---|
2262 |
|
---|
2263 | #ifdef INTNET_WITH_DHCP_SNOOPING
|
---|
2264 |
|
---|
2265 | /**
|
---|
2266 | * Snoops IP assignments and releases from the DHCPv4 traffic.
|
---|
2267 | *
|
---|
2268 | * The caller is responsible for making sure this traffic between the
|
---|
2269 | * BOOTPS and BOOTPC ports and validate the IP header. The UDP packet
|
---|
2270 | * need not be validated beyond the ports.
|
---|
2271 | *
|
---|
2272 | * @param pNetwork The network this frame was seen on.
|
---|
2273 | * @param pIpHdr Pointer to a valid IP header. This is for pseudo
|
---|
2274 | * header validation, so only the minimum header size
|
---|
2275 | * needs to be available and valid here.
|
---|
2276 | * @param pUdpHdr Pointer to the UDP header in the frame.
|
---|
2277 | * @param cbUdpPkt What's left of the frame when starting at the UDP header.
|
---|
2278 | * @param fGso Set if this is a GSO frame, clear if regular.
|
---|
2279 | */
|
---|
2280 | static void intnetR0NetworkSnoopDhcp(PINTNETNETWORK pNetwork, PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, uint32_t cbUdpPkt)
|
---|
2281 | {
|
---|
2282 | /*
|
---|
2283 | * Check if the DHCP message is valid and get the type.
|
---|
2284 | */
|
---|
2285 | if (!RTNetIPv4IsUDPValid(pIpHdr, pUdpHdr, pUdpHdr + 1, cbUdpPkt, true /*fCheckSum*/))
|
---|
2286 | {
|
---|
2287 | Log6(("Bad UDP packet\n"));
|
---|
2288 | return;
|
---|
2289 | }
|
---|
2290 | PCRTNETBOOTP pDhcp = (PCRTNETBOOTP)(pUdpHdr + 1);
|
---|
2291 | uint8_t MsgType;
|
---|
2292 | if (!RTNetIPv4IsDHCPValid(pUdpHdr, pDhcp, cbUdpPkt - sizeof(*pUdpHdr), &MsgType))
|
---|
2293 | {
|
---|
2294 | Log6(("Bad DHCP packet\n"));
|
---|
2295 | return;
|
---|
2296 | }
|
---|
2297 |
|
---|
2298 | #ifdef LOG_ENABLED
|
---|
2299 | /*
|
---|
2300 | * Log it.
|
---|
2301 | */
|
---|
2302 | const char *pszType = "unknown";
|
---|
2303 | switch (MsgType)
|
---|
2304 | {
|
---|
2305 | case RTNET_DHCP_MT_DISCOVER: pszType = "discover"; break;
|
---|
2306 | case RTNET_DHCP_MT_OFFER: pszType = "offer"; break;
|
---|
2307 | case RTNET_DHCP_MT_REQUEST: pszType = "request"; break;
|
---|
2308 | case RTNET_DHCP_MT_DECLINE: pszType = "decline"; break;
|
---|
2309 | case RTNET_DHCP_MT_ACK: pszType = "ack"; break;
|
---|
2310 | case RTNET_DHCP_MT_NAC: pszType = "nac"; break;
|
---|
2311 | case RTNET_DHCP_MT_RELEASE: pszType = "release"; break;
|
---|
2312 | case RTNET_DHCP_MT_INFORM: pszType = "inform"; break;
|
---|
2313 | }
|
---|
2314 | Log6(("DHCP msg: %d (%s) client %.6Rhxs ciaddr=%d.%d.%d.%d yiaddr=%d.%d.%d.%d\n", MsgType, pszType, &pDhcp->bp_chaddr,
|
---|
2315 | pDhcp->bp_ciaddr.au8[0], pDhcp->bp_ciaddr.au8[1], pDhcp->bp_ciaddr.au8[2], pDhcp->bp_ciaddr.au8[3],
|
---|
2316 | pDhcp->bp_yiaddr.au8[0], pDhcp->bp_yiaddr.au8[1], pDhcp->bp_yiaddr.au8[2], pDhcp->bp_yiaddr.au8[3]));
|
---|
2317 | #endif /* LOG_EANBLED */
|
---|
2318 |
|
---|
2319 | /*
|
---|
2320 | * Act upon the message.
|
---|
2321 | */
|
---|
2322 | switch (MsgType)
|
---|
2323 | {
|
---|
2324 | #if 0
|
---|
2325 | case RTNET_DHCP_MT_REQUEST:
|
---|
2326 | /** @todo Check for valid non-broadcast requests w/ IP for any of the MACs we
|
---|
2327 | * know, and add the IP to the cache. */
|
---|
2328 | break;
|
---|
2329 | #endif
|
---|
2330 |
|
---|
2331 |
|
---|
2332 | /*
|
---|
2333 | * Lookup the interface by its MAC address and insert the IPv4 address into the cache.
|
---|
2334 | * Delete the old client address first, just in case it changed in a renewal.
|
---|
2335 | */
|
---|
2336 | case RTNET_DHCP_MT_ACK:
|
---|
2337 | if (intnetR0IPv4AddrIsGood(pDhcp->bp_yiaddr))
|
---|
2338 | {
|
---|
2339 | PINTNETIF pMatchingIf = NULL;
|
---|
2340 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
2341 |
|
---|
2342 | uint32_t iIf = pNetwork->MacTab.cEntries;
|
---|
2343 | while (iIf-- > 0)
|
---|
2344 | {
|
---|
2345 | PINTNETIF pCur = pNetwork->MacTab.paEntries[iIf].pIf;
|
---|
2346 | if ( intnetR0IfHasMacAddr(pCur)
|
---|
2347 | && !memcmp(&pCur->MacAddr, &pDhcp->bp_chaddr, sizeof(RTMAC)))
|
---|
2348 | {
|
---|
2349 | intnetR0IfAddrCacheDelete(pCur, &pCur->aAddrCache[kIntNetAddrType_IPv4],
|
---|
2350 | (PCRTNETADDRU)&pDhcp->bp_ciaddr, sizeof(RTNETADDRIPV4), "DHCP_MT_ACK");
|
---|
2351 | if (!pMatchingIf)
|
---|
2352 | {
|
---|
2353 | pMatchingIf = pCur;
|
---|
2354 | intnetR0BusyIncIf(pMatchingIf);
|
---|
2355 | }
|
---|
2356 | }
|
---|
2357 | }
|
---|
2358 |
|
---|
2359 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
2360 |
|
---|
2361 | if (pMatchingIf)
|
---|
2362 | {
|
---|
2363 | intnetR0IfAddrCacheAdd(pMatchingIf, kIntNetAddrType_IPv4,
|
---|
2364 | (PCRTNETADDRU)&pDhcp->bp_yiaddr, "DHCP_MT_ACK");
|
---|
2365 | intnetR0BusyDecIf(pMatchingIf);
|
---|
2366 | }
|
---|
2367 | }
|
---|
2368 | return;
|
---|
2369 |
|
---|
2370 |
|
---|
2371 | /*
|
---|
2372 | * Lookup the interface by its MAC address and remove the IPv4 address(es) from the cache.
|
---|
2373 | */
|
---|
2374 | case RTNET_DHCP_MT_RELEASE:
|
---|
2375 | {
|
---|
2376 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
2377 |
|
---|
2378 | uint32_t iIf = pNetwork->MacTab.cEntries;
|
---|
2379 | while (iIf-- > 0)
|
---|
2380 | {
|
---|
2381 | PINTNETIF pCur = pNetwork->MacTab.paEntries[iIf].pIf;
|
---|
2382 | if ( intnetR0IfHasMacAddr(pCur)
|
---|
2383 | && !memcmp(&pCur->MacAddr, &pDhcp->bp_chaddr, sizeof(RTMAC)))
|
---|
2384 | {
|
---|
2385 | intnetR0IfAddrCacheDelete(pCur, &pCur->aAddrCache[kIntNetAddrType_IPv4],
|
---|
2386 | (PCRTNETADDRU)&pDhcp->bp_ciaddr, sizeof(RTNETADDRIPV4), "DHCP_MT_RELEASE");
|
---|
2387 | intnetR0IfAddrCacheDelete(pCur, &pCur->aAddrCache[kIntNetAddrType_IPv4],
|
---|
2388 | (PCRTNETADDRU)&pDhcp->bp_yiaddr, sizeof(RTNETADDRIPV4), "DHCP_MT_RELEASE");
|
---|
2389 | }
|
---|
2390 | }
|
---|
2391 |
|
---|
2392 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
2393 | break;
|
---|
2394 | }
|
---|
2395 | }
|
---|
2396 |
|
---|
2397 | }
|
---|
2398 |
|
---|
2399 |
|
---|
2400 | /**
|
---|
2401 | * Worker for intnetR0TrunkIfSnoopAddr that takes care of what
|
---|
2402 | * is likely to be a DHCP message.
|
---|
2403 | *
|
---|
2404 | * The caller has already check that the UDP source and destination ports
|
---|
2405 | * are BOOTPS or BOOTPC.
|
---|
2406 | *
|
---|
2407 | * @param pNetwork The network this frame was seen on.
|
---|
2408 | * @param pSG The gather list for the frame.
|
---|
2409 | */
|
---|
2410 | static void intnetR0TrunkIfSnoopDhcp(PINTNETNETWORK pNetwork, PCINTNETSG pSG)
|
---|
2411 | {
|
---|
2412 | /*
|
---|
2413 | * Get a pointer to a linear copy of the full packet, using the
|
---|
2414 | * temporary buffer if necessary.
|
---|
2415 | */
|
---|
2416 | PCRTNETIPV4 pIpHdr = (PCRTNETIPV4)((PCRTNETETHERHDR)pSG->aSegs[0].pv + 1);
|
---|
2417 | uint32_t cbPacket = pSG->cbTotal - sizeof(RTNETETHERHDR);
|
---|
2418 | if (pSG->cSegsUsed > 1)
|
---|
2419 | {
|
---|
2420 | cbPacket = RT_MIN(cbPacket, INTNETNETWORK_TMP_SIZE);
|
---|
2421 | Log6(("intnetR0TrunkIfSnoopDhcp: Copying IPv4/UDP/DHCP pkt %u\n", cbPacket));
|
---|
2422 | if (!intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR), cbPacket, pNetwork->pbTmp))
|
---|
2423 | return;
|
---|
2424 | //pSG->fFlags |= INTNETSG_FLAGS_PKT_CP_IN_TMP;
|
---|
2425 | pIpHdr = (PCRTNETIPV4)pNetwork->pbTmp;
|
---|
2426 | }
|
---|
2427 |
|
---|
2428 | /*
|
---|
2429 | * Validate the IP header and find the UDP packet.
|
---|
2430 | */
|
---|
2431 | if (!RTNetIPv4IsHdrValid(pIpHdr, cbPacket, pSG->cbTotal - sizeof(RTNETETHERHDR), true /*fChecksum*/))
|
---|
2432 | {
|
---|
2433 | Log(("intnetR0TrunkIfSnoopDhcp: bad ip header\n"));
|
---|
2434 | return;
|
---|
2435 | }
|
---|
2436 | uint32_t cbIpHdr = pIpHdr->ip_hl * 4;
|
---|
2437 |
|
---|
2438 | /*
|
---|
2439 | * Hand it over to the common DHCP snooper.
|
---|
2440 | */
|
---|
2441 | intnetR0NetworkSnoopDhcp(pNetwork, pIpHdr, (PCRTNETUDP)((uintptr_t)pIpHdr + cbIpHdr), cbPacket - cbIpHdr);
|
---|
2442 | }
|
---|
2443 |
|
---|
2444 | #endif /* INTNET_WITH_DHCP_SNOOPING */
|
---|
2445 |
|
---|
2446 |
|
---|
2447 | /**
|
---|
2448 | * Snoops up source addresses from ARP requests and purge these from the address
|
---|
2449 | * caches.
|
---|
2450 | *
|
---|
2451 | * The purpose of this purging is to get rid of stale addresses.
|
---|
2452 | *
|
---|
2453 | * @param pNetwork The network this frame was seen on.
|
---|
2454 | * @param pSG The gather list for the frame.
|
---|
2455 | */
|
---|
2456 | static void intnetR0TrunkIfSnoopArp(PINTNETNETWORK pNetwork, PCINTNETSG pSG)
|
---|
2457 | {
|
---|
2458 | /*
|
---|
2459 | * Check the minimum size first.
|
---|
2460 | */
|
---|
2461 | if (RT_UNLIKELY(pSG->cbTotal < sizeof(RTNETETHERHDR) + sizeof(RTNETARPIPV4)))
|
---|
2462 | return;
|
---|
2463 |
|
---|
2464 | /*
|
---|
2465 | * Copy to temporary buffer if necessary.
|
---|
2466 | */
|
---|
2467 | uint32_t cbPacket = RT_MIN(pSG->cbTotal, sizeof(RTNETARPIPV4));
|
---|
2468 | PCRTNETARPIPV4 pArpIPv4 = (PCRTNETARPIPV4)((uintptr_t)pSG->aSegs[0].pv + sizeof(RTNETETHERHDR));
|
---|
2469 | if ( pSG->cSegsUsed != 1
|
---|
2470 | && pSG->aSegs[0].cb < cbPacket)
|
---|
2471 | {
|
---|
2472 | if ( (pSG->fFlags & (INTNETSG_FLAGS_ARP_IPV4 | INTNETSG_FLAGS_PKT_CP_IN_TMP))
|
---|
2473 | != (INTNETSG_FLAGS_ARP_IPV4 | INTNETSG_FLAGS_PKT_CP_IN_TMP)
|
---|
2474 | && !intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR), cbPacket, pNetwork->pbTmp))
|
---|
2475 | return;
|
---|
2476 | pArpIPv4 = (PCRTNETARPIPV4)pNetwork->pbTmp;
|
---|
2477 | }
|
---|
2478 |
|
---|
2479 | /*
|
---|
2480 | * Ignore packets which doesn't interest us or we perceive as malformed.
|
---|
2481 | */
|
---|
2482 | if (RT_UNLIKELY( pArpIPv4->Hdr.ar_hlen != sizeof(RTMAC)
|
---|
2483 | || pArpIPv4->Hdr.ar_plen != sizeof(RTNETADDRIPV4)
|
---|
2484 | || pArpIPv4->Hdr.ar_htype != RT_H2BE_U16(RTNET_ARP_ETHER)
|
---|
2485 | || pArpIPv4->Hdr.ar_ptype != RT_H2BE_U16(RTNET_ETHERTYPE_IPV4)))
|
---|
2486 | return;
|
---|
2487 | uint16_t ar_oper = RT_H2BE_U16(pArpIPv4->Hdr.ar_oper);
|
---|
2488 | if (RT_UNLIKELY( ar_oper != RTNET_ARPOP_REQUEST
|
---|
2489 | && ar_oper != RTNET_ARPOP_REPLY))
|
---|
2490 | {
|
---|
2491 | Log6(("ts-ar: op=%#x\n", ar_oper));
|
---|
2492 | return;
|
---|
2493 | }
|
---|
2494 |
|
---|
2495 | /*
|
---|
2496 | * Delete the source address if it's OK.
|
---|
2497 | */
|
---|
2498 | if ( !intnetR0IsMacAddrMulticast(&pArpIPv4->ar_sha)
|
---|
2499 | && ( pArpIPv4->ar_sha.au16[0]
|
---|
2500 | || pArpIPv4->ar_sha.au16[1]
|
---|
2501 | || pArpIPv4->ar_sha.au16[2])
|
---|
2502 | && intnetR0IPv4AddrIsGood(pArpIPv4->ar_spa))
|
---|
2503 | {
|
---|
2504 | Log6(("ts-ar: %d.%d.%d.%d / %.6Rhxs\n", pArpIPv4->ar_spa.au8[0], pArpIPv4->ar_spa.au8[1],
|
---|
2505 | pArpIPv4->ar_spa.au8[2], pArpIPv4->ar_spa.au8[3], &pArpIPv4->ar_sha));
|
---|
2506 | intnetR0NetworkAddrCacheDelete(pNetwork, (PCRTNETADDRU)&pArpIPv4->ar_spa,
|
---|
2507 | kIntNetAddrType_IPv4, sizeof(pArpIPv4->ar_spa), "tif/arp");
|
---|
2508 | }
|
---|
2509 | }
|
---|
2510 |
|
---|
2511 |
|
---|
2512 | #ifdef INTNET_WITH_DHCP_SNOOPING
|
---|
2513 | /**
|
---|
2514 | * Snoop up addresses from ARP and DHCP traffic from frames coming
|
---|
2515 | * over the trunk connection.
|
---|
2516 | *
|
---|
2517 | * The caller is responsible for do some basic filtering before calling
|
---|
2518 | * this function.
|
---|
2519 | * For IPv4 this means checking against the minimum DHCPv4 frame size.
|
---|
2520 | *
|
---|
2521 | * @param pNetwork The network.
|
---|
2522 | * @param pSG The SG list for the frame.
|
---|
2523 | * @param EtherType The Ethertype of the frame.
|
---|
2524 | */
|
---|
2525 | static void intnetR0TrunkIfSnoopAddr(PINTNETNETWORK pNetwork, PCINTNETSG pSG, uint16_t EtherType)
|
---|
2526 | {
|
---|
2527 | switch (EtherType)
|
---|
2528 | {
|
---|
2529 | case RTNET_ETHERTYPE_IPV4:
|
---|
2530 | {
|
---|
2531 | uint32_t cbIpHdr;
|
---|
2532 | uint8_t b;
|
---|
2533 |
|
---|
2534 | Assert(pSG->cbTotal >= sizeof(RTNETETHERHDR) + RTNETIPV4_MIN_LEN + RTNETUDP_MIN_LEN + RTNETBOOTP_DHCP_MIN_LEN);
|
---|
2535 | if (pSG->aSegs[0].cb >= sizeof(RTNETETHERHDR) + RTNETIPV4_MIN_LEN)
|
---|
2536 | {
|
---|
2537 | /* check if the protocol is UDP */
|
---|
2538 | PCRTNETIPV4 pIpHdr = (PCRTNETIPV4)((uint8_t const *)pSG->aSegs[0].pv + sizeof(RTNETETHERHDR));
|
---|
2539 | if (pIpHdr->ip_p != RTNETIPV4_PROT_UDP)
|
---|
2540 | return;
|
---|
2541 |
|
---|
2542 | /* get the TCP header length */
|
---|
2543 | cbIpHdr = pIpHdr->ip_hl * 4;
|
---|
2544 | }
|
---|
2545 | else
|
---|
2546 | {
|
---|
2547 | /* check if the protocol is UDP */
|
---|
2548 | if ( intnetR0SgReadByte(pSG, sizeof(RTNETETHERHDR) + RT_UOFFSETOF(RTNETIPV4, ip_p))
|
---|
2549 | != RTNETIPV4_PROT_UDP)
|
---|
2550 | return;
|
---|
2551 |
|
---|
2552 | /* get the TCP header length */
|
---|
2553 | b = intnetR0SgReadByte(pSG, sizeof(RTNETETHERHDR) + 0); /* (IPv4 first byte, a bitfield) */
|
---|
2554 | cbIpHdr = (b & 0x0f) * 4;
|
---|
2555 | }
|
---|
2556 | if (cbIpHdr < RTNETIPV4_MIN_LEN)
|
---|
2557 | return;
|
---|
2558 |
|
---|
2559 | /* compare the ports. */
|
---|
2560 | if (pSG->aSegs[0].cb >= sizeof(RTNETETHERHDR) + cbIpHdr + RTNETUDP_MIN_LEN)
|
---|
2561 | {
|
---|
2562 | PCRTNETUDP pUdpHdr = (PCRTNETUDP)((uint8_t const *)pSG->aSegs[0].pv + sizeof(RTNETETHERHDR) + cbIpHdr);
|
---|
2563 | if ( ( RT_BE2H_U16(pUdpHdr->uh_sport) != RTNETIPV4_PORT_BOOTPS
|
---|
2564 | && RT_BE2H_U16(pUdpHdr->uh_dport) != RTNETIPV4_PORT_BOOTPS)
|
---|
2565 | || ( RT_BE2H_U16(pUdpHdr->uh_dport) != RTNETIPV4_PORT_BOOTPC
|
---|
2566 | && RT_BE2H_U16(pUdpHdr->uh_sport) != RTNETIPV4_PORT_BOOTPC))
|
---|
2567 | return;
|
---|
2568 | }
|
---|
2569 | else
|
---|
2570 | {
|
---|
2571 | /* get the lower byte of the UDP source port number. */
|
---|
2572 | b = intnetR0SgReadByte(pSG, sizeof(RTNETETHERHDR) + cbIpHdr + RT_UOFFSETOF(RTNETUDP, uh_sport) + 1);
|
---|
2573 | if ( b != RTNETIPV4_PORT_BOOTPS
|
---|
2574 | && b != RTNETIPV4_PORT_BOOTPC)
|
---|
2575 | return;
|
---|
2576 | uint8_t SrcPort = b;
|
---|
2577 | b = intnetR0SgReadByte(pSG, sizeof(RTNETETHERHDR) + cbIpHdr + RT_UOFFSETOF(RTNETUDP, uh_sport));
|
---|
2578 | if (b)
|
---|
2579 | return;
|
---|
2580 |
|
---|
2581 | /* get the lower byte of the UDP destination port number. */
|
---|
2582 | b = intnetR0SgReadByte(pSG, sizeof(RTNETETHERHDR) + cbIpHdr + RT_UOFFSETOF(RTNETUDP, uh_dport) + 1);
|
---|
2583 | if ( b != RTNETIPV4_PORT_BOOTPS
|
---|
2584 | && b != RTNETIPV4_PORT_BOOTPC)
|
---|
2585 | return;
|
---|
2586 | if (b == SrcPort)
|
---|
2587 | return;
|
---|
2588 | b = intnetR0SgReadByte(pSG, sizeof(RTNETETHERHDR) + cbIpHdr + RT_UOFFSETOF(RTNETUDP, uh_dport));
|
---|
2589 | if (b)
|
---|
2590 | return;
|
---|
2591 | }
|
---|
2592 | intnetR0TrunkIfSnoopDhcp(pNetwork, pSG);
|
---|
2593 | break;
|
---|
2594 | }
|
---|
2595 |
|
---|
2596 | case RTNET_ETHERTYPE_ARP:
|
---|
2597 | intnetR0TrunkIfSnoopArp(pNetwork, pSG);
|
---|
2598 | break;
|
---|
2599 | }
|
---|
2600 | }
|
---|
2601 | #endif /* INTNET_WITH_DHCP_SNOOPING */
|
---|
2602 |
|
---|
2603 | /**
|
---|
2604 | * Deals with an IPv6 packet.
|
---|
2605 | *
|
---|
2606 | * This will fish out the source IP address and add it to the cache.
|
---|
2607 | * Then it will look for DHCPRELEASE requests (?) and anything else
|
---|
2608 | * that we might find useful later.
|
---|
2609 | *
|
---|
2610 | * @param pIf The interface that's sending the frame.
|
---|
2611 | * @param pIpHdr Pointer to the IPv4 header in the frame.
|
---|
2612 | * @param cbPacket The size of the packet, or more correctly the
|
---|
2613 | * size of the frame without the ethernet header.
|
---|
2614 | * @param fGso Set if this is a GSO frame, clear if regular.
|
---|
2615 | */
|
---|
2616 | static void intnetR0IfSnoopIPv6SourceAddr(PINTNETIF pIf, PCRTNETIPV6 pIpHdr, uint32_t cbPacket, bool fGso)
|
---|
2617 | {
|
---|
2618 | NOREF(fGso);
|
---|
2619 |
|
---|
2620 | /*
|
---|
2621 | * Check the header size first to prevent access invalid data.
|
---|
2622 | */
|
---|
2623 | if (cbPacket < RTNETIPV6_MIN_LEN)
|
---|
2624 | return;
|
---|
2625 |
|
---|
2626 | /*
|
---|
2627 | * If the source address is good (not multicast) and
|
---|
2628 | * not already in the address cache of the sender, add it.
|
---|
2629 | */
|
---|
2630 | RTNETADDRU Addr;
|
---|
2631 | Addr.IPv6 = pIpHdr->ip6_src;
|
---|
2632 |
|
---|
2633 | if ( intnetR0IPv6AddrIsGood(Addr.IPv6) && (pIpHdr->ip6_hlim == 0xff)
|
---|
2634 | && intnetR0IfAddrCacheLookupLikely(&pIf->aAddrCache[kIntNetAddrType_IPv6], &Addr, sizeof(Addr.IPv6)) < 0)
|
---|
2635 | {
|
---|
2636 | intnetR0IfAddrCacheAdd(pIf, kIntNetAddrType_IPv6, &Addr, "if/ipv6");
|
---|
2637 | }
|
---|
2638 | }
|
---|
2639 |
|
---|
2640 |
|
---|
2641 | /**
|
---|
2642 | * Deals with an IPv4 packet.
|
---|
2643 | *
|
---|
2644 | * This will fish out the source IP address and add it to the cache.
|
---|
2645 | * Then it will look for DHCPRELEASE requests (?) and anything else
|
---|
2646 | * that we might find useful later.
|
---|
2647 | *
|
---|
2648 | * @param pIf The interface that's sending the frame.
|
---|
2649 | * @param pIpHdr Pointer to the IPv4 header in the frame.
|
---|
2650 | * @param cbPacket The size of the packet, or more correctly the
|
---|
2651 | * size of the frame without the ethernet header.
|
---|
2652 | * @param fGso Set if this is a GSO frame, clear if regular.
|
---|
2653 | */
|
---|
2654 | static void intnetR0IfSnoopIPv4SourceAddr(PINTNETIF pIf, PCRTNETIPV4 pIpHdr, uint32_t cbPacket, bool fGso)
|
---|
2655 | {
|
---|
2656 | /*
|
---|
2657 | * Check the header size first to prevent access invalid data.
|
---|
2658 | */
|
---|
2659 | if (cbPacket < RTNETIPV4_MIN_LEN)
|
---|
2660 | return;
|
---|
2661 | uint32_t cbHdr = (uint32_t)pIpHdr->ip_hl * 4;
|
---|
2662 | if ( cbHdr < RTNETIPV4_MIN_LEN
|
---|
2663 | || cbPacket < cbHdr)
|
---|
2664 | return;
|
---|
2665 |
|
---|
2666 | /*
|
---|
2667 | * If the source address is good (not broadcast or my network) and
|
---|
2668 | * not already in the address cache of the sender, add it. Validate
|
---|
2669 | * the IP header before adding it.
|
---|
2670 | */
|
---|
2671 | bool fValidatedIpHdr = false;
|
---|
2672 | RTNETADDRU Addr;
|
---|
2673 | Addr.IPv4 = pIpHdr->ip_src;
|
---|
2674 | if ( intnetR0IPv4AddrIsGood(Addr.IPv4)
|
---|
2675 | && intnetR0IfAddrCacheLookupLikely(&pIf->aAddrCache[kIntNetAddrType_IPv4], &Addr, sizeof(Addr.IPv4)) < 0)
|
---|
2676 | {
|
---|
2677 | if (!RTNetIPv4IsHdrValid(pIpHdr, cbPacket, cbPacket, !fGso /*fChecksum*/))
|
---|
2678 | {
|
---|
2679 | Log(("intnetR0IfSnoopIPv4SourceAddr: bad ip header\n"));
|
---|
2680 | return;
|
---|
2681 | }
|
---|
2682 |
|
---|
2683 | intnetR0IfAddrCacheAddIt(pIf, kIntNetAddrType_IPv4, &Addr, "if/ipv4");
|
---|
2684 | fValidatedIpHdr = true;
|
---|
2685 | }
|
---|
2686 |
|
---|
2687 | #ifdef INTNET_WITH_DHCP_SNOOPING
|
---|
2688 | /*
|
---|
2689 | * Check for potential DHCP packets.
|
---|
2690 | */
|
---|
2691 | if ( pIpHdr->ip_p == RTNETIPV4_PROT_UDP /* DHCP is UDP. */
|
---|
2692 | && cbPacket >= cbHdr + RTNETUDP_MIN_LEN + RTNETBOOTP_DHCP_MIN_LEN /* Min DHCP packet len. */
|
---|
2693 | && !fGso) /* GSO is not applicable to DHCP traffic. */
|
---|
2694 | {
|
---|
2695 | PCRTNETUDP pUdpHdr = (PCRTNETUDP)((uint8_t const *)pIpHdr + cbHdr);
|
---|
2696 | if ( ( RT_BE2H_U16(pUdpHdr->uh_dport) == RTNETIPV4_PORT_BOOTPS
|
---|
2697 | || RT_BE2H_U16(pUdpHdr->uh_sport) == RTNETIPV4_PORT_BOOTPS)
|
---|
2698 | && ( RT_BE2H_U16(pUdpHdr->uh_sport) == RTNETIPV4_PORT_BOOTPC
|
---|
2699 | || RT_BE2H_U16(pUdpHdr->uh_dport) == RTNETIPV4_PORT_BOOTPC))
|
---|
2700 | {
|
---|
2701 | if ( fValidatedIpHdr
|
---|
2702 | || RTNetIPv4IsHdrValid(pIpHdr, cbPacket, cbPacket, !fGso /*fChecksum*/))
|
---|
2703 | intnetR0NetworkSnoopDhcp(pIf->pNetwork, pIpHdr, pUdpHdr, cbPacket - cbHdr);
|
---|
2704 | else
|
---|
2705 | Log(("intnetR0IfSnoopIPv4SourceAddr: bad ip header (dhcp)\n"));
|
---|
2706 | }
|
---|
2707 | }
|
---|
2708 | #endif /* INTNET_WITH_DHCP_SNOOPING */
|
---|
2709 | }
|
---|
2710 |
|
---|
2711 |
|
---|
2712 | /**
|
---|
2713 | * Snoop up source addresses from an ARP request or reply.
|
---|
2714 | *
|
---|
2715 | * @param pIf The interface that's sending the frame.
|
---|
2716 | * @param pHdr The ARP header.
|
---|
2717 | * @param cbPacket The size of the packet (might be larger than the ARP
|
---|
2718 | * request 'cause of min ethernet frame size).
|
---|
2719 | * @param pfSgFlags Pointer to the SG flags. This is used to tag the packet so we
|
---|
2720 | * don't have to repeat the frame parsing in intnetR0TrunkIfSend.
|
---|
2721 | */
|
---|
2722 | static void intnetR0IfSnoopArpAddr(PINTNETIF pIf, PCRTNETARPIPV4 pArpIPv4, uint32_t cbPacket, uint16_t *pfSgFlags)
|
---|
2723 | {
|
---|
2724 | /*
|
---|
2725 | * Ignore packets which doesn't interest us or we perceive as malformed.
|
---|
2726 | */
|
---|
2727 | if (RT_UNLIKELY(cbPacket < sizeof(RTNETARPIPV4)))
|
---|
2728 | return;
|
---|
2729 | if (RT_UNLIKELY( pArpIPv4->Hdr.ar_hlen != sizeof(RTMAC)
|
---|
2730 | || pArpIPv4->Hdr.ar_plen != sizeof(RTNETADDRIPV4)
|
---|
2731 | || pArpIPv4->Hdr.ar_htype != RT_H2BE_U16(RTNET_ARP_ETHER)
|
---|
2732 | || pArpIPv4->Hdr.ar_ptype != RT_H2BE_U16(RTNET_ETHERTYPE_IPV4)))
|
---|
2733 | return;
|
---|
2734 | uint16_t ar_oper = RT_H2BE_U16(pArpIPv4->Hdr.ar_oper);
|
---|
2735 | if (RT_UNLIKELY( ar_oper != RTNET_ARPOP_REQUEST
|
---|
2736 | && ar_oper != RTNET_ARPOP_REPLY))
|
---|
2737 | {
|
---|
2738 | Log6(("ar_oper=%#x\n", ar_oper));
|
---|
2739 | return;
|
---|
2740 | }
|
---|
2741 |
|
---|
2742 | /*
|
---|
2743 | * Tag the SG as ARP IPv4 for later editing, then check for addresses
|
---|
2744 | * which can be removed or added to the address cache of the sender.
|
---|
2745 | */
|
---|
2746 | *pfSgFlags |= INTNETSG_FLAGS_ARP_IPV4;
|
---|
2747 |
|
---|
2748 | if ( ar_oper == RTNET_ARPOP_REPLY
|
---|
2749 | && !intnetR0IsMacAddrMulticast(&pArpIPv4->ar_tha)
|
---|
2750 | && ( pArpIPv4->ar_tha.au16[0]
|
---|
2751 | || pArpIPv4->ar_tha.au16[1]
|
---|
2752 | || pArpIPv4->ar_tha.au16[2])
|
---|
2753 | && intnetR0IPv4AddrIsGood(pArpIPv4->ar_tpa))
|
---|
2754 | intnetR0IfAddrCacheDelete(pIf, &pIf->aAddrCache[kIntNetAddrType_IPv4],
|
---|
2755 | (PCRTNETADDRU)&pArpIPv4->ar_tpa, sizeof(RTNETADDRIPV4), "if/arp");
|
---|
2756 |
|
---|
2757 | if ( !memcmp(&pArpIPv4->ar_sha, &pIf->MacAddr, sizeof(RTMAC))
|
---|
2758 | && intnetR0IPv4AddrIsGood(pArpIPv4->ar_spa))
|
---|
2759 | {
|
---|
2760 | intnetR0IfAddrCacheAdd(pIf, kIntNetAddrType_IPv4, (PCRTNETADDRU)&pArpIPv4->ar_spa, "if/arp");
|
---|
2761 | }
|
---|
2762 | }
|
---|
2763 |
|
---|
2764 |
|
---|
2765 |
|
---|
2766 | /**
|
---|
2767 | * Checks packets send by a normal interface for new network
|
---|
2768 | * layer addresses.
|
---|
2769 | *
|
---|
2770 | * @param pIf The interface that's sending the frame.
|
---|
2771 | * @param pbFrame The frame.
|
---|
2772 | * @param cbFrame The size of the frame.
|
---|
2773 | * @param fGso Set if this is a GSO frame, clear if regular.
|
---|
2774 | * @param pfSgFlags Pointer to the SG flags. This is used to tag the packet so we
|
---|
2775 | * don't have to repeat the frame parsing in intnetR0TrunkIfSend.
|
---|
2776 | */
|
---|
2777 | static void intnetR0IfSnoopAddr(PINTNETIF pIf, uint8_t const *pbFrame, uint32_t cbFrame, bool fGso, uint16_t *pfSgFlags)
|
---|
2778 | {
|
---|
2779 | /*
|
---|
2780 | * Fish out the ethertype and look for stuff we can handle.
|
---|
2781 | */
|
---|
2782 | if (cbFrame <= sizeof(RTNETETHERHDR))
|
---|
2783 | return;
|
---|
2784 | cbFrame -= sizeof(RTNETETHERHDR);
|
---|
2785 |
|
---|
2786 | uint16_t EtherType = RT_H2BE_U16(((PCRTNETETHERHDR)pbFrame)->EtherType);
|
---|
2787 | switch (EtherType)
|
---|
2788 | {
|
---|
2789 | case RTNET_ETHERTYPE_IPV4:
|
---|
2790 | intnetR0IfSnoopIPv4SourceAddr(pIf, (PCRTNETIPV4)((PCRTNETETHERHDR)pbFrame + 1), cbFrame, fGso);
|
---|
2791 | break;
|
---|
2792 |
|
---|
2793 | case RTNET_ETHERTYPE_IPV6:
|
---|
2794 | intnetR0IfSnoopIPv6SourceAddr(pIf, (PCRTNETIPV6)((PCRTNETETHERHDR)pbFrame + 1), cbFrame, fGso);
|
---|
2795 | break;
|
---|
2796 |
|
---|
2797 | #if 0 /** @todo IntNet: implement IPX for wireless MAC sharing? */
|
---|
2798 | case RTNET_ETHERTYPE_IPX_1:
|
---|
2799 | case RTNET_ETHERTYPE_IPX_2:
|
---|
2800 | case RTNET_ETHERTYPE_IPX_3:
|
---|
2801 | intnetR0IfSnoopIpxSourceAddr(pIf, (PCINTNETIPX)((PCRTNETETHERHDR)pbFrame + 1), cbFrame, pfSgFlags);
|
---|
2802 | break;
|
---|
2803 | #endif
|
---|
2804 | case RTNET_ETHERTYPE_ARP:
|
---|
2805 | intnetR0IfSnoopArpAddr(pIf, (PCRTNETARPIPV4)((PCRTNETETHERHDR)pbFrame + 1), cbFrame, pfSgFlags);
|
---|
2806 | break;
|
---|
2807 | }
|
---|
2808 | }
|
---|
2809 |
|
---|
2810 |
|
---|
2811 | /**
|
---|
2812 | * Writes a frame packet to the ring buffer.
|
---|
2813 | *
|
---|
2814 | * @returns VBox status code.
|
---|
2815 | * @param pBuf The buffer.
|
---|
2816 | * @param pRingBuf The ring buffer to read from.
|
---|
2817 | * @param pSG The gather list.
|
---|
2818 | * @param pNewDstMac Set the destination MAC address to the address if specified.
|
---|
2819 | */
|
---|
2820 | static int intnetR0RingWriteFrame(PINTNETRINGBUF pRingBuf, PCINTNETSG pSG, PCRTMAC pNewDstMac)
|
---|
2821 | {
|
---|
2822 | PINTNETHDR pHdr = NULL; /* shut up gcc*/
|
---|
2823 | void *pvDst = NULL; /* ditto */
|
---|
2824 | int rc;
|
---|
2825 | if (pSG->GsoCtx.u8Type == PDMNETWORKGSOTYPE_INVALID)
|
---|
2826 | rc = IntNetRingAllocateFrame(pRingBuf, pSG->cbTotal, &pHdr, &pvDst);
|
---|
2827 | else
|
---|
2828 | rc = IntNetRingAllocateGsoFrame(pRingBuf, pSG->cbTotal, &pSG->GsoCtx, &pHdr, &pvDst);
|
---|
2829 | if (RT_SUCCESS(rc))
|
---|
2830 | {
|
---|
2831 | IntNetSgRead(pSG, pvDst);
|
---|
2832 | if (pNewDstMac)
|
---|
2833 | ((PRTNETETHERHDR)pvDst)->DstMac = *pNewDstMac;
|
---|
2834 |
|
---|
2835 | IntNetRingCommitFrame(pRingBuf, pHdr);
|
---|
2836 | return VINF_SUCCESS;
|
---|
2837 | }
|
---|
2838 | return rc;
|
---|
2839 | }
|
---|
2840 |
|
---|
2841 |
|
---|
2842 | /**
|
---|
2843 | * Notifies consumers of incoming data from @a pIf that data is available.
|
---|
2844 | */
|
---|
2845 | DECL_FORCE_INLINE(void) intnetR0IfNotifyRecv(PINTNETIF pIf)
|
---|
2846 | {
|
---|
2847 | #if !defined(VBOX_WITH_INTNET_SERVICE_IN_R3) || !defined(IN_RING3)
|
---|
2848 | RTSemEventSignal(pIf->hRecvEvent);
|
---|
2849 | #else
|
---|
2850 | pIf->pfnRecvAvail(pIf->hIf, pIf->pvUserRecvAvail);
|
---|
2851 | #endif
|
---|
2852 | }
|
---|
2853 |
|
---|
2854 |
|
---|
2855 | /**
|
---|
2856 | * Sends a frame to a specific interface.
|
---|
2857 | *
|
---|
2858 | * @param pIf The interface.
|
---|
2859 | * @param pIfSender The interface sending the frame. This is NULL if it's the trunk.
|
---|
2860 | * @param pSG The gather buffer which data is being sent to the interface.
|
---|
2861 | * @param pNewDstMac Set the destination MAC address to the address if specified.
|
---|
2862 | */
|
---|
2863 | static void intnetR0IfSend(PINTNETIF pIf, PINTNETIF pIfSender, PINTNETSG pSG, PCRTMAC pNewDstMac)
|
---|
2864 | {
|
---|
2865 | /*
|
---|
2866 | * Grab the receive/producer lock and copy over the frame.
|
---|
2867 | */
|
---|
2868 | RTSpinlockAcquire(pIf->hRecvInSpinlock);
|
---|
2869 | int rc = intnetR0RingWriteFrame(&pIf->pIntBuf->Recv, pSG, pNewDstMac);
|
---|
2870 | RTSpinlockRelease(pIf->hRecvInSpinlock);
|
---|
2871 | if (RT_SUCCESS(rc))
|
---|
2872 | {
|
---|
2873 | pIf->cYields = 0;
|
---|
2874 | intnetR0IfNotifyRecv(pIf);
|
---|
2875 | return;
|
---|
2876 | }
|
---|
2877 |
|
---|
2878 | Log(("intnetR0IfSend: overflow cb=%d hIf=%RX32\n", pSG->cbTotal, pIf->hIf));
|
---|
2879 |
|
---|
2880 | /*
|
---|
2881 | * Scheduling hack, for unicore machines primarily.
|
---|
2882 | */
|
---|
2883 | if ( pIf->fActive
|
---|
2884 | && pIf->cYields < 4 /* just twice */
|
---|
2885 | && pIfSender /* but not if it's from the trunk */
|
---|
2886 | && RTThreadPreemptIsEnabled(NIL_RTTHREAD)
|
---|
2887 | )
|
---|
2888 | {
|
---|
2889 | unsigned cYields = 2;
|
---|
2890 | while (--cYields > 0)
|
---|
2891 | {
|
---|
2892 | intnetR0IfNotifyRecv(pIf);
|
---|
2893 | RTThreadYield();
|
---|
2894 |
|
---|
2895 | RTSpinlockAcquire(pIf->hRecvInSpinlock);
|
---|
2896 | rc = intnetR0RingWriteFrame(&pIf->pIntBuf->Recv, pSG, pNewDstMac);
|
---|
2897 | RTSpinlockRelease(pIf->hRecvInSpinlock);
|
---|
2898 | if (RT_SUCCESS(rc))
|
---|
2899 | {
|
---|
2900 | STAM_REL_COUNTER_INC(&pIf->pIntBuf->cStatYieldsOk);
|
---|
2901 | intnetR0IfNotifyRecv(pIf);
|
---|
2902 | return;
|
---|
2903 | }
|
---|
2904 | pIf->cYields++;
|
---|
2905 | }
|
---|
2906 | STAM_REL_COUNTER_INC(&pIf->pIntBuf->cStatYieldsNok);
|
---|
2907 | }
|
---|
2908 |
|
---|
2909 | /* ok, the frame is lost. */
|
---|
2910 | STAM_REL_COUNTER_INC(&pIf->pIntBuf->cStatLost);
|
---|
2911 | intnetR0IfNotifyRecv(pIf);
|
---|
2912 | }
|
---|
2913 |
|
---|
2914 |
|
---|
2915 | /**
|
---|
2916 | * Fallback path that does the GSO segmenting before passing the frame on to the
|
---|
2917 | * trunk interface.
|
---|
2918 | *
|
---|
2919 | * The caller holds the trunk lock.
|
---|
2920 | *
|
---|
2921 | * @param pThis The trunk.
|
---|
2922 | * @param pIfSender The IF sending the frame.
|
---|
2923 | * @param pSG Pointer to the gather list.
|
---|
2924 | * @param fDst The destination flags.
|
---|
2925 | */
|
---|
2926 | static int intnetR0TrunkIfSendGsoFallback(PINTNETTRUNKIF pThis, PINTNETIF pIfSender, PINTNETSG pSG, uint32_t fDst)
|
---|
2927 | {
|
---|
2928 | /*
|
---|
2929 | * Since we're only using this for GSO frame coming from the internal
|
---|
2930 | * network interfaces and never the trunk, we can assume there is only
|
---|
2931 | * one segment. This simplifies the code quite a bit.
|
---|
2932 | */
|
---|
2933 | Assert(PDMNetGsoIsValid(&pSG->GsoCtx, sizeof(pSG->GsoCtx), pSG->cbTotal));
|
---|
2934 | AssertReturn(pSG->cSegsUsed == 1, VERR_INTERNAL_ERROR_4);
|
---|
2935 |
|
---|
2936 | union
|
---|
2937 | {
|
---|
2938 | uint8_t abBuf[sizeof(INTNETSG) + sizeof(INTNETSEG)];
|
---|
2939 | INTNETSG SG;
|
---|
2940 | } u;
|
---|
2941 |
|
---|
2942 | /** @todo We have to adjust MSS so it does not exceed the value configured for
|
---|
2943 | * the host's interface.
|
---|
2944 | */
|
---|
2945 |
|
---|
2946 | /*
|
---|
2947 | * Carve out the frame segments with the header and frame in different
|
---|
2948 | * scatter / gather segments.
|
---|
2949 | */
|
---|
2950 | uint32_t const cSegs = PDMNetGsoCalcSegmentCount(&pSG->GsoCtx, pSG->cbTotal);
|
---|
2951 | for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
|
---|
2952 | {
|
---|
2953 | uint32_t cbSegPayload, cbSegHdrs;
|
---|
2954 | uint32_t offSegPayload = PDMNetGsoCarveSegment(&pSG->GsoCtx, (uint8_t *)pSG->aSegs[0].pv, pSG->cbTotal, iSeg, cSegs,
|
---|
2955 | pIfSender->abGsoHdrs, &cbSegHdrs, &cbSegPayload);
|
---|
2956 |
|
---|
2957 | IntNetSgInitTempSegs(&u.SG, cbSegHdrs + cbSegPayload, 2, 2);
|
---|
2958 | u.SG.aSegs[0].Phys = NIL_RTHCPHYS;
|
---|
2959 | u.SG.aSegs[0].pv = pIfSender->abGsoHdrs;
|
---|
2960 | u.SG.aSegs[0].cb = cbSegHdrs;
|
---|
2961 | u.SG.aSegs[1].Phys = NIL_RTHCPHYS;
|
---|
2962 | u.SG.aSegs[1].pv = (uint8_t *)pSG->aSegs[0].pv + offSegPayload;
|
---|
2963 | u.SG.aSegs[1].cb = (uint32_t)cbSegPayload;
|
---|
2964 |
|
---|
2965 | int rc = pThis->pIfPort->pfnXmit(pThis->pIfPort, pIfSender->pvIfData, &u.SG, fDst);
|
---|
2966 | if (RT_FAILURE(rc))
|
---|
2967 | return rc;
|
---|
2968 | }
|
---|
2969 | return VINF_SUCCESS;
|
---|
2970 | }
|
---|
2971 |
|
---|
2972 |
|
---|
2973 | /**
|
---|
2974 | * Checks if any of the given trunk destinations can handle this kind of GSO SG.
|
---|
2975 | *
|
---|
2976 | * @returns true if it can, false if it cannot.
|
---|
2977 | * @param pThis The trunk.
|
---|
2978 | * @param pSG The scatter / gather buffer.
|
---|
2979 | * @param fDst The destination mask.
|
---|
2980 | */
|
---|
2981 | DECLINLINE(bool) intnetR0TrunkIfCanHandleGsoFrame(PINTNETTRUNKIF pThis, PINTNETSG pSG, uint32_t fDst)
|
---|
2982 | {
|
---|
2983 | uint8_t u8Type = pSG->GsoCtx.u8Type;
|
---|
2984 | AssertReturn(u8Type < 32, false); /* paranoia */
|
---|
2985 | uint32_t fMask = RT_BIT_32(u8Type);
|
---|
2986 |
|
---|
2987 | if (fDst == INTNETTRUNKDIR_HOST)
|
---|
2988 | return !!(pThis->fHostGsoCapabilites & fMask);
|
---|
2989 | if (fDst == INTNETTRUNKDIR_WIRE)
|
---|
2990 | return !!(pThis->fWireGsoCapabilites & fMask);
|
---|
2991 | Assert(fDst == (INTNETTRUNKDIR_WIRE | INTNETTRUNKDIR_HOST));
|
---|
2992 | return !!(pThis->fHostGsoCapabilites & pThis->fWireGsoCapabilites & fMask);
|
---|
2993 | }
|
---|
2994 |
|
---|
2995 |
|
---|
2996 | /**
|
---|
2997 | * Calculates the checksum of a full ipv6 frame.
|
---|
2998 | *
|
---|
2999 | * @returns 16-bit hecksum value.
|
---|
3000 | * @param pIpHdr The IPv6 header (network endian (big)).
|
---|
3001 | * @param bProtocol The protocol number. This can be the same as the
|
---|
3002 | * ip6_nxt field, but doesn't need to be.
|
---|
3003 | * @param cbPkt The packet size (host endian of course). This can
|
---|
3004 | * be the same as the ip6_plen field, but as with @a
|
---|
3005 | * bProtocol it won't be when extension headers are
|
---|
3006 | * present. For UDP this will be uh_ulen converted to
|
---|
3007 | * host endian.
|
---|
3008 | */
|
---|
3009 | static uint16_t computeIPv6FullChecksum(PCRTNETIPV6 pIpHdr)
|
---|
3010 | {
|
---|
3011 | uint16_t const *data;
|
---|
3012 | int len = RT_BE2H_U16(pIpHdr->ip6_plen);
|
---|
3013 | uint32_t sum = RTNetIPv6PseudoChecksum(pIpHdr);
|
---|
3014 |
|
---|
3015 | /* add the payload */
|
---|
3016 | data = (uint16_t *) (pIpHdr + 1);
|
---|
3017 | while(len > 1)
|
---|
3018 | {
|
---|
3019 | sum += *(data);
|
---|
3020 | data++;
|
---|
3021 | len -= 2;
|
---|
3022 | }
|
---|
3023 |
|
---|
3024 | if(len > 0)
|
---|
3025 | sum += *((uint8_t *) data);
|
---|
3026 |
|
---|
3027 | while(sum >> 16)
|
---|
3028 | sum = (sum & 0xffff) + (sum >> 16);
|
---|
3029 |
|
---|
3030 | return (uint16_t) ~sum;
|
---|
3031 | }
|
---|
3032 |
|
---|
3033 |
|
---|
3034 | /**
|
---|
3035 | * Rewrite VM MAC address with shared host MAC address inside IPv6
|
---|
3036 | * Neighbor Discovery datagrams.
|
---|
3037 | */
|
---|
3038 | static void intnetR0TrunkSharedMacEditIPv6FromIntNet(PINTNETTRUNKIF pThis, PINTNETIF pIfSender,
|
---|
3039 | PRTNETETHERHDR pEthHdr, uint32_t cb)
|
---|
3040 | {
|
---|
3041 | if (RT_UNLIKELY(cb < sizeof(*pEthHdr)))
|
---|
3042 | return;
|
---|
3043 |
|
---|
3044 | /* have IPv6 header */
|
---|
3045 | PRTNETIPV6 pIPv6 = (PRTNETIPV6)(pEthHdr + 1);
|
---|
3046 | cb -= sizeof(*pEthHdr);
|
---|
3047 | if (RT_UNLIKELY(cb < sizeof(*pIPv6)))
|
---|
3048 | return;
|
---|
3049 |
|
---|
3050 | if ( pIPv6->ip6_nxt != RTNETIPV6_PROT_ICMPV6
|
---|
3051 | || pIPv6->ip6_hlim != 0xff)
|
---|
3052 | return;
|
---|
3053 |
|
---|
3054 | PRTNETICMPV6HDR pICMPv6 = (PRTNETICMPV6HDR)(pIPv6 + 1);
|
---|
3055 | cb -= sizeof(*pIPv6);
|
---|
3056 | if (RT_UNLIKELY(cb < sizeof(*pICMPv6)))
|
---|
3057 | return;
|
---|
3058 |
|
---|
3059 | uint32_t hdrlen = 0;
|
---|
3060 | uint8_t llaopt = RTNETIPV6_ICMP_ND_SLLA_OPT;
|
---|
3061 |
|
---|
3062 | uint8_t type = pICMPv6->icmp6_type;
|
---|
3063 | switch (type)
|
---|
3064 | {
|
---|
3065 | case RTNETIPV6_ICMP_TYPE_RS:
|
---|
3066 | hdrlen = 8;
|
---|
3067 | break;
|
---|
3068 |
|
---|
3069 | case RTNETIPV6_ICMP_TYPE_RA:
|
---|
3070 | hdrlen = 16;
|
---|
3071 | break;
|
---|
3072 |
|
---|
3073 | case RTNETIPV6_ICMP_TYPE_NS:
|
---|
3074 | hdrlen = 24;
|
---|
3075 | break;
|
---|
3076 |
|
---|
3077 | case RTNETIPV6_ICMP_TYPE_NA:
|
---|
3078 | hdrlen = 24;
|
---|
3079 | llaopt = RTNETIPV6_ICMP_ND_TLLA_OPT;
|
---|
3080 | break;
|
---|
3081 |
|
---|
3082 | default:
|
---|
3083 | return;
|
---|
3084 | }
|
---|
3085 |
|
---|
3086 | AssertReturnVoid(hdrlen > 0);
|
---|
3087 | if (RT_UNLIKELY(cb < hdrlen))
|
---|
3088 | return;
|
---|
3089 |
|
---|
3090 | if (RT_UNLIKELY(pICMPv6->icmp6_code != 0))
|
---|
3091 | return;
|
---|
3092 |
|
---|
3093 | PRTNETNDP_LLA_OPT pLLAOpt = NULL;
|
---|
3094 | char *pOpt = (char *)pICMPv6 + hdrlen;
|
---|
3095 | cb -= hdrlen;
|
---|
3096 |
|
---|
3097 | while (cb >= 8)
|
---|
3098 | {
|
---|
3099 | uint8_t opt = ((uint8_t *)pOpt)[0];
|
---|
3100 | uint32_t optlen = (uint32_t)((uint8_t *)pOpt)[1] * 8;
|
---|
3101 | if (RT_UNLIKELY(cb < optlen))
|
---|
3102 | return;
|
---|
3103 |
|
---|
3104 | if (opt == llaopt)
|
---|
3105 | {
|
---|
3106 | if (RT_UNLIKELY(optlen != 8))
|
---|
3107 | return;
|
---|
3108 | pLLAOpt = (PRTNETNDP_LLA_OPT)pOpt;
|
---|
3109 | break;
|
---|
3110 | }
|
---|
3111 |
|
---|
3112 | pOpt += optlen;
|
---|
3113 | cb -= optlen;
|
---|
3114 | }
|
---|
3115 |
|
---|
3116 | if (pLLAOpt == NULL)
|
---|
3117 | return;
|
---|
3118 |
|
---|
3119 | if (memcmp(&pLLAOpt->lla, &pIfSender->MacAddr, sizeof(RTMAC)) != 0)
|
---|
3120 | return;
|
---|
3121 |
|
---|
3122 | /* overwrite VM's MAC with host's MAC */
|
---|
3123 | pLLAOpt->lla = pThis->MacAddr;
|
---|
3124 |
|
---|
3125 | /* recompute the checksum */
|
---|
3126 | pICMPv6->icmp6_cksum = 0;
|
---|
3127 | pICMPv6->icmp6_cksum = computeIPv6FullChecksum(pIPv6);
|
---|
3128 | }
|
---|
3129 |
|
---|
3130 |
|
---|
3131 | /**
|
---|
3132 | * Sends a frame down the trunk.
|
---|
3133 | *
|
---|
3134 | * @param pThis The trunk.
|
---|
3135 | * @param pNetwork The network the frame is being sent to.
|
---|
3136 | * @param pIfSender The IF sending the frame. Used for MAC address
|
---|
3137 | * checks in shared MAC mode.
|
---|
3138 | * @param fDst The destination flags.
|
---|
3139 | * @param pSG Pointer to the gather list.
|
---|
3140 | */
|
---|
3141 | static void intnetR0TrunkIfSend(PINTNETTRUNKIF pThis, PINTNETNETWORK pNetwork, PINTNETIF pIfSender,
|
---|
3142 | uint32_t fDst, PINTNETSG pSG)
|
---|
3143 | {
|
---|
3144 | /*
|
---|
3145 | * Quick sanity check.
|
---|
3146 | */
|
---|
3147 | AssertPtr(pThis);
|
---|
3148 | AssertPtr(pNetwork);
|
---|
3149 | AssertPtr(pIfSender);
|
---|
3150 | AssertPtr(pSG);
|
---|
3151 | Assert(fDst);
|
---|
3152 | AssertReturnVoid(pThis->pIfPort);
|
---|
3153 |
|
---|
3154 | /*
|
---|
3155 | * Edit the frame if we're sharing the MAC address with the host on the wire.
|
---|
3156 | *
|
---|
3157 | * If the frame is headed for both the host and the wire, we'll have to send
|
---|
3158 | * it to the host before making any modifications, and force the OS specific
|
---|
3159 | * backend to copy it. We do this by marking it as TEMP (which is always the
|
---|
3160 | * case right now).
|
---|
3161 | */
|
---|
3162 | if ( (pNetwork->fFlags & INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE)
|
---|
3163 | && (fDst & INTNETTRUNKDIR_WIRE))
|
---|
3164 | {
|
---|
3165 | /*
|
---|
3166 | * Dispatch it to the host before making changes.
|
---|
3167 | */
|
---|
3168 | if (fDst & INTNETTRUNKDIR_HOST)
|
---|
3169 | {
|
---|
3170 | Assert(pSG->fFlags & INTNETSG_FLAGS_TEMP); /* make sure copy is forced */
|
---|
3171 | intnetR0TrunkIfSend(pThis, pNetwork, pIfSender, INTNETTRUNKDIR_HOST, pSG);
|
---|
3172 | fDst &= ~INTNETTRUNKDIR_HOST;
|
---|
3173 | }
|
---|
3174 |
|
---|
3175 | /*
|
---|
3176 | * Edit the source address so that it it's the same as the host.
|
---|
3177 | */
|
---|
3178 | /* ASSUME frame from IntNetR0IfSend! */
|
---|
3179 | AssertReturnVoid(pSG->cSegsUsed == 1);
|
---|
3180 | AssertReturnVoid(pSG->cbTotal >= sizeof(RTNETETHERHDR));
|
---|
3181 | AssertReturnVoid(pIfSender);
|
---|
3182 | PRTNETETHERHDR pEthHdr = (PRTNETETHERHDR)pSG->aSegs[0].pv;
|
---|
3183 |
|
---|
3184 | pEthHdr->SrcMac = pThis->MacAddr;
|
---|
3185 |
|
---|
3186 | /*
|
---|
3187 | * Deal with tags from the snooping phase.
|
---|
3188 | */
|
---|
3189 | if (pSG->fFlags & INTNETSG_FLAGS_ARP_IPV4)
|
---|
3190 | {
|
---|
3191 | /*
|
---|
3192 | * APR IPv4: replace hardware (MAC) addresses because these end up
|
---|
3193 | * in ARP caches. So, if we don't the other machines will
|
---|
3194 | * send the packets to the MAC address of the guest
|
---|
3195 | * instead of the one of the host, which won't work on
|
---|
3196 | * wireless of course...
|
---|
3197 | */
|
---|
3198 | PRTNETARPIPV4 pArp = (PRTNETARPIPV4)(pEthHdr + 1);
|
---|
3199 | if (!memcmp(&pArp->ar_sha, &pIfSender->MacAddr, sizeof(RTMAC)))
|
---|
3200 | {
|
---|
3201 | Log6(("tw: ar_sha %.6Rhxs -> %.6Rhxs\n", &pArp->ar_sha, &pThis->MacAddr));
|
---|
3202 | pArp->ar_sha = pThis->MacAddr;
|
---|
3203 | }
|
---|
3204 | if (!memcmp(&pArp->ar_tha, &pIfSender->MacAddr, sizeof(RTMAC))) /* just in case... */
|
---|
3205 | {
|
---|
3206 | Log6(("tw: ar_tha %.6Rhxs -> %.6Rhxs\n", &pArp->ar_tha, &pThis->MacAddr));
|
---|
3207 | pArp->ar_tha = pThis->MacAddr;
|
---|
3208 | }
|
---|
3209 | }
|
---|
3210 | else if (pEthHdr->EtherType == RT_H2N_U16_C(RTNET_ETHERTYPE_IPV6))
|
---|
3211 | {
|
---|
3212 | intnetR0TrunkSharedMacEditIPv6FromIntNet(pThis, pIfSender, pEthHdr, pSG->cbTotal);
|
---|
3213 | }
|
---|
3214 | }
|
---|
3215 |
|
---|
3216 | /*
|
---|
3217 | * Send the frame, handling the GSO fallback.
|
---|
3218 | *
|
---|
3219 | * Note! The trunk implementation will re-check that the trunk is active
|
---|
3220 | * before sending, so we don't have to duplicate that effort here.
|
---|
3221 | */
|
---|
3222 | STAM_REL_PROFILE_START(&pIfSender->pIntBuf->StatSend2, a);
|
---|
3223 | int rc;
|
---|
3224 | if ( pSG->GsoCtx.u8Type == PDMNETWORKGSOTYPE_INVALID
|
---|
3225 | || intnetR0TrunkIfCanHandleGsoFrame(pThis, pSG, fDst) )
|
---|
3226 | rc = pThis->pIfPort->pfnXmit(pThis->pIfPort, pIfSender->pvIfData, pSG, fDst);
|
---|
3227 | else
|
---|
3228 | rc = intnetR0TrunkIfSendGsoFallback(pThis, pIfSender, pSG, fDst);
|
---|
3229 | STAM_REL_PROFILE_STOP(&pIfSender->pIntBuf->StatSend2, a);
|
---|
3230 |
|
---|
3231 | /** @todo failure statistics? */
|
---|
3232 | Log2(("intnetR0TrunkIfSend: %Rrc fDst=%d\n", rc, fDst)); NOREF(rc);
|
---|
3233 | }
|
---|
3234 |
|
---|
3235 |
|
---|
3236 | /**
|
---|
3237 | * Detect broadcasts packaged as unicast and convert them back to broadcast.
|
---|
3238 | *
|
---|
3239 | * WiFi routers try to use ethernet unicast instead of broadcast or
|
---|
3240 | * multicast when possible. Look inside the packet and fix up
|
---|
3241 | * ethernet destination to be proper broadcast or multicast if
|
---|
3242 | * necessary.
|
---|
3243 | *
|
---|
3244 | * @returns true broadcast (pEthHdr & pSG are modified), false if not.
|
---|
3245 | * @param pNetwork The network the frame is being sent to.
|
---|
3246 | * @param pSG Pointer to the gather list for the frame. The
|
---|
3247 | * ethernet destination address is modified when
|
---|
3248 | * returning true.
|
---|
3249 | * @param pEthHdr Pointer to the ethernet header. The ethernet
|
---|
3250 | * destination address is modified when returning true.
|
---|
3251 | */
|
---|
3252 | static bool intnetR0NetworkSharedMacDetectAndFixBroadcast(PINTNETNETWORK pNetwork, PINTNETSG pSG, PRTNETETHERHDR pEthHdr)
|
---|
3253 | {
|
---|
3254 | NOREF(pNetwork);
|
---|
3255 |
|
---|
3256 | switch (pEthHdr->EtherType)
|
---|
3257 | {
|
---|
3258 | case RT_H2N_U16_C(RTNET_ETHERTYPE_ARP):
|
---|
3259 | {
|
---|
3260 | uint16_t ar_oper;
|
---|
3261 | if (!intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR) + RT_UOFFSETOF(RTNETARPHDR, ar_oper),
|
---|
3262 | sizeof(ar_oper), &ar_oper))
|
---|
3263 | return false;
|
---|
3264 |
|
---|
3265 | if (ar_oper == RT_H2N_U16_C(RTNET_ARPOP_REQUEST))
|
---|
3266 | {
|
---|
3267 | /* change to broadcast */
|
---|
3268 | pEthHdr->DstMac.au16[0] = 0xffff;
|
---|
3269 | pEthHdr->DstMac.au16[1] = 0xffff;
|
---|
3270 | pEthHdr->DstMac.au16[2] = 0xffff;
|
---|
3271 | }
|
---|
3272 | else
|
---|
3273 | return false;
|
---|
3274 | break;
|
---|
3275 | }
|
---|
3276 |
|
---|
3277 | case RT_H2N_U16_C(RTNET_ETHERTYPE_IPV4):
|
---|
3278 | {
|
---|
3279 | RTNETADDRIPV4 ip_dst;
|
---|
3280 | if (!intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR) + RT_UOFFSETOF(RTNETIPV4, ip_dst),
|
---|
3281 | sizeof(ip_dst), &ip_dst))
|
---|
3282 | return false;
|
---|
3283 |
|
---|
3284 | if (ip_dst.u == 0xffffffff) /* 255.255.255.255? */
|
---|
3285 | {
|
---|
3286 | /* change to broadcast */
|
---|
3287 | pEthHdr->DstMac.au16[0] = 0xffff;
|
---|
3288 | pEthHdr->DstMac.au16[1] = 0xffff;
|
---|
3289 | pEthHdr->DstMac.au16[2] = 0xffff;
|
---|
3290 | }
|
---|
3291 | else if ((ip_dst.au8[0] & 0xf0) == 0xe0) /* IPv4 multicast? */
|
---|
3292 | {
|
---|
3293 | /* change to 01:00:5e:xx:xx:xx multicast ... */
|
---|
3294 | pEthHdr->DstMac.au8[0] = 0x01;
|
---|
3295 | pEthHdr->DstMac.au8[1] = 0x00;
|
---|
3296 | pEthHdr->DstMac.au8[2] = 0x5e;
|
---|
3297 | /* ... with lower 23 bits from the multicast IP address */
|
---|
3298 | pEthHdr->DstMac.au8[3] = ip_dst.au8[1] & 0x7f;
|
---|
3299 | pEthHdr->DstMac.au8[4] = ip_dst.au8[2];
|
---|
3300 | pEthHdr->DstMac.au8[5] = ip_dst.au8[3];
|
---|
3301 | }
|
---|
3302 | else
|
---|
3303 | return false;
|
---|
3304 | break;
|
---|
3305 | }
|
---|
3306 |
|
---|
3307 | case RT_H2N_U16_C(RTNET_ETHERTYPE_IPV6):
|
---|
3308 | {
|
---|
3309 | RTNETADDRIPV6 ip6_dst;
|
---|
3310 | if (!intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR) + RT_UOFFSETOF(RTNETIPV6, ip6_dst),
|
---|
3311 | sizeof(ip6_dst), &ip6_dst))
|
---|
3312 | return false;
|
---|
3313 |
|
---|
3314 | if (ip6_dst.au8[0] == 0xff) /* IPv6 multicast? */
|
---|
3315 | {
|
---|
3316 | pEthHdr->DstMac.au16[0] = 0x3333;
|
---|
3317 | pEthHdr->DstMac.au16[1] = ip6_dst.au16[6];
|
---|
3318 | pEthHdr->DstMac.au16[2] = ip6_dst.au16[7];
|
---|
3319 | }
|
---|
3320 | else
|
---|
3321 | return false;
|
---|
3322 | break;
|
---|
3323 | }
|
---|
3324 |
|
---|
3325 | default:
|
---|
3326 | return false;
|
---|
3327 | }
|
---|
3328 |
|
---|
3329 |
|
---|
3330 | /*
|
---|
3331 | * Update ethernet destination in the segment.
|
---|
3332 | */
|
---|
3333 | intnetR0SgWritePart(pSG, RT_UOFFSETOF(RTNETETHERHDR, DstMac), sizeof(pEthHdr->DstMac), &pEthHdr->DstMac);
|
---|
3334 |
|
---|
3335 | return true;
|
---|
3336 | }
|
---|
3337 |
|
---|
3338 |
|
---|
3339 | /**
|
---|
3340 | * Snoops a multicast ICMPv6 ND DAD from the wire via the trunk connection.
|
---|
3341 | *
|
---|
3342 | * @param pNetwork The network the frame is being sent to.
|
---|
3343 | * @param pSG Pointer to the gather list for the frame.
|
---|
3344 | * @param pEthHdr Pointer to the ethernet header.
|
---|
3345 | */
|
---|
3346 | static void intnetR0NetworkSnoopNAFromWire(PINTNETNETWORK pNetwork, PINTNETSG pSG, PRTNETETHERHDR pEthHdr)
|
---|
3347 | {
|
---|
3348 | NOREF(pEthHdr);
|
---|
3349 |
|
---|
3350 | /*
|
---|
3351 | * Check the minimum size and get a linear copy of the thing to work on,
|
---|
3352 | * using the temporary buffer if necessary.
|
---|
3353 | */
|
---|
3354 | if (RT_UNLIKELY(pSG->cbTotal < sizeof(RTNETETHERHDR) + sizeof(RTNETIPV6) +
|
---|
3355 | sizeof(RTNETNDP)))
|
---|
3356 | return;
|
---|
3357 | PRTNETIPV6 pIPv6 = (PRTNETIPV6)((uint8_t *)pSG->aSegs[0].pv + sizeof(RTNETETHERHDR));
|
---|
3358 | if ( pSG->cSegsUsed != 1
|
---|
3359 | && pSG->aSegs[0].cb < sizeof(RTNETETHERHDR) + sizeof(RTNETIPV6) +
|
---|
3360 | sizeof(RTNETNDP))
|
---|
3361 | {
|
---|
3362 | Log6(("fw: Copying IPv6 pkt %u\n", sizeof(RTNETIPV6)));
|
---|
3363 | if (!intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR), sizeof(RTNETIPV6)
|
---|
3364 | + sizeof(RTNETNDP), pNetwork->pbTmp))
|
---|
3365 | return;
|
---|
3366 | pSG->fFlags |= INTNETSG_FLAGS_PKT_CP_IN_TMP;
|
---|
3367 | pIPv6 = (PRTNETIPV6)pNetwork->pbTmp;
|
---|
3368 | }
|
---|
3369 |
|
---|
3370 | PCRTNETNDP pNd = (PCRTNETNDP) (pIPv6 + 1);
|
---|
3371 |
|
---|
3372 | /*
|
---|
3373 | * a multicast NS with :: as source address means a DAD packet.
|
---|
3374 | * if it comes from the wire and we have the DAD'd address in our cache,
|
---|
3375 | * flush the entry as the address is being acquired by someone else on
|
---|
3376 | * the network.
|
---|
3377 | */
|
---|
3378 | if ( pIPv6->ip6_hlim == 0xff
|
---|
3379 | && pIPv6->ip6_nxt == RTNETIPV6_PROT_ICMPV6
|
---|
3380 | && pNd->Hdr.icmp6_type == RTNETIPV6_ICMP_TYPE_NS
|
---|
3381 | && pNd->Hdr.icmp6_code == 0
|
---|
3382 | && pIPv6->ip6_src.QWords.qw0 == 0
|
---|
3383 | && pIPv6->ip6_src.QWords.qw1 == 0)
|
---|
3384 | {
|
---|
3385 |
|
---|
3386 | intnetR0NetworkAddrCacheDelete(pNetwork, (PCRTNETADDRU) &pNd->target_address,
|
---|
3387 | kIntNetAddrType_IPv6, sizeof(RTNETADDRIPV6), "tif/ip6");
|
---|
3388 | }
|
---|
3389 | }
|
---|
3390 | /**
|
---|
3391 | * Edits an ARP packet arriving from the wire via the trunk connection.
|
---|
3392 | *
|
---|
3393 | * @param pNetwork The network the frame is being sent to.
|
---|
3394 | * @param pSG Pointer to the gather list for the frame.
|
---|
3395 | * The flags and data content may be updated.
|
---|
3396 | * @param pEthHdr Pointer to the ethernet header. This may also be
|
---|
3397 | * updated if it's a unicast...
|
---|
3398 | */
|
---|
3399 | static void intnetR0NetworkEditArpFromWire(PINTNETNETWORK pNetwork, PINTNETSG pSG, PRTNETETHERHDR pEthHdr)
|
---|
3400 | {
|
---|
3401 | /*
|
---|
3402 | * Check the minimum size and get a linear copy of the thing to work on,
|
---|
3403 | * using the temporary buffer if necessary.
|
---|
3404 | */
|
---|
3405 | if (RT_UNLIKELY(pSG->cbTotal < sizeof(RTNETETHERHDR) + sizeof(RTNETARPIPV4)))
|
---|
3406 | return;
|
---|
3407 | PRTNETARPIPV4 pArpIPv4 = (PRTNETARPIPV4)((uint8_t *)pSG->aSegs[0].pv + sizeof(RTNETETHERHDR));
|
---|
3408 | if ( pSG->cSegsUsed != 1
|
---|
3409 | && pSG->aSegs[0].cb < sizeof(RTNETETHERHDR) + sizeof(RTNETARPIPV4))
|
---|
3410 | {
|
---|
3411 | Log6(("fw: Copying ARP pkt %u\n", sizeof(RTNETARPIPV4)));
|
---|
3412 | if (!intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR), sizeof(RTNETARPIPV4), pNetwork->pbTmp))
|
---|
3413 | return;
|
---|
3414 | pSG->fFlags |= INTNETSG_FLAGS_PKT_CP_IN_TMP;
|
---|
3415 | pArpIPv4 = (PRTNETARPIPV4)pNetwork->pbTmp;
|
---|
3416 | }
|
---|
3417 |
|
---|
3418 | /*
|
---|
3419 | * Ignore packets which doesn't interest us or we perceive as malformed.
|
---|
3420 | */
|
---|
3421 | if (RT_UNLIKELY( pArpIPv4->Hdr.ar_hlen != sizeof(RTMAC)
|
---|
3422 | || pArpIPv4->Hdr.ar_plen != sizeof(RTNETADDRIPV4)
|
---|
3423 | || pArpIPv4->Hdr.ar_htype != RT_H2BE_U16(RTNET_ARP_ETHER)
|
---|
3424 | || pArpIPv4->Hdr.ar_ptype != RT_H2BE_U16(RTNET_ETHERTYPE_IPV4)))
|
---|
3425 | return;
|
---|
3426 | uint16_t ar_oper = RT_H2BE_U16(pArpIPv4->Hdr.ar_oper);
|
---|
3427 | if (RT_UNLIKELY( ar_oper != RTNET_ARPOP_REQUEST
|
---|
3428 | && ar_oper != RTNET_ARPOP_REPLY))
|
---|
3429 | {
|
---|
3430 | Log6(("ar_oper=%#x\n", ar_oper));
|
---|
3431 | return;
|
---|
3432 | }
|
---|
3433 |
|
---|
3434 | /* Tag it as ARP IPv4. */
|
---|
3435 | pSG->fFlags |= INTNETSG_FLAGS_ARP_IPV4;
|
---|
3436 |
|
---|
3437 | /*
|
---|
3438 | * The thing we're interested in here is a reply to a query made by a guest
|
---|
3439 | * since we modified the MAC in the initial request the guest made.
|
---|
3440 | */
|
---|
3441 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
3442 | RTMAC MacAddrTrunk;
|
---|
3443 | if (pNetwork->MacTab.pTrunk)
|
---|
3444 | MacAddrTrunk = pNetwork->MacTab.pTrunk->MacAddr;
|
---|
3445 | else
|
---|
3446 | memset(&MacAddrTrunk, 0, sizeof(MacAddrTrunk));
|
---|
3447 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
3448 | if ( ar_oper == RTNET_ARPOP_REPLY
|
---|
3449 | && !memcmp(&pArpIPv4->ar_tha, &MacAddrTrunk, sizeof(RTMAC)))
|
---|
3450 | {
|
---|
3451 | PINTNETIF pIf = intnetR0NetworkAddrCacheLookupIf(pNetwork, (PCRTNETADDRU)&pArpIPv4->ar_tpa,
|
---|
3452 | kIntNetAddrType_IPv4, sizeof(pArpIPv4->ar_tpa));
|
---|
3453 | if (pIf)
|
---|
3454 | {
|
---|
3455 | Log6(("fw: ar_tha %.6Rhxs -> %.6Rhxs\n", &pArpIPv4->ar_tha, &pIf->MacAddr));
|
---|
3456 | pArpIPv4->ar_tha = pIf->MacAddr;
|
---|
3457 | if (!memcmp(&pEthHdr->DstMac, &MacAddrTrunk, sizeof(RTMAC)))
|
---|
3458 | {
|
---|
3459 | Log6(("fw: DstMac %.6Rhxs -> %.6Rhxs\n", &pEthHdr->DstMac, &pIf->MacAddr));
|
---|
3460 | pEthHdr->DstMac = pIf->MacAddr;
|
---|
3461 | if ((void *)pEthHdr != pSG->aSegs[0].pv)
|
---|
3462 | intnetR0SgWritePart(pSG, RT_UOFFSETOF(RTNETETHERHDR, DstMac), sizeof(RTMAC), &pIf->MacAddr);
|
---|
3463 | }
|
---|
3464 | intnetR0BusyDecIf(pIf);
|
---|
3465 |
|
---|
3466 | /* Write back the packet if we've been making changes to a buffered copy. */
|
---|
3467 | if (pSG->fFlags & INTNETSG_FLAGS_PKT_CP_IN_TMP)
|
---|
3468 | intnetR0SgWritePart(pSG, sizeof(RTNETETHERHDR), sizeof(PRTNETARPIPV4), pArpIPv4);
|
---|
3469 | }
|
---|
3470 | }
|
---|
3471 | }
|
---|
3472 |
|
---|
3473 |
|
---|
3474 | /**
|
---|
3475 | * Detects and edits an DHCP packet arriving from the internal net.
|
---|
3476 | *
|
---|
3477 | * @param pNetwork The network the frame is being sent to.
|
---|
3478 | * @param pSG Pointer to the gather list for the frame.
|
---|
3479 | * The flags and data content may be updated.
|
---|
3480 | * @param pEthHdr Pointer to the ethernet header. This may also be
|
---|
3481 | * updated if it's a unicast...
|
---|
3482 | */
|
---|
3483 | static void intnetR0NetworkEditDhcpFromIntNet(PINTNETNETWORK pNetwork, PINTNETSG pSG, PRTNETETHERHDR pEthHdr)
|
---|
3484 | {
|
---|
3485 | NOREF(pEthHdr);
|
---|
3486 |
|
---|
3487 | /*
|
---|
3488 | * Check the minimum size and get a linear copy of the thing to work on,
|
---|
3489 | * using the temporary buffer if necessary.
|
---|
3490 | */
|
---|
3491 | if (RT_UNLIKELY(pSG->cbTotal < sizeof(RTNETETHERHDR) + RTNETIPV4_MIN_LEN + RTNETUDP_MIN_LEN + RTNETBOOTP_DHCP_MIN_LEN))
|
---|
3492 | return;
|
---|
3493 | /*
|
---|
3494 | * Get a pointer to a linear copy of the full packet, using the
|
---|
3495 | * temporary buffer if necessary.
|
---|
3496 | */
|
---|
3497 | PCRTNETIPV4 pIpHdr = (PCRTNETIPV4)((PCRTNETETHERHDR)pSG->aSegs[0].pv + 1);
|
---|
3498 | uint32_t cbPacket = pSG->cbTotal - sizeof(RTNETETHERHDR);
|
---|
3499 | if (pSG->cSegsUsed > 1)
|
---|
3500 | {
|
---|
3501 | cbPacket = RT_MIN(cbPacket, INTNETNETWORK_TMP_SIZE);
|
---|
3502 | Log6(("intnetR0NetworkEditDhcpFromIntNet: Copying IPv4/UDP/DHCP pkt %u\n", cbPacket));
|
---|
3503 | if (!intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR), cbPacket, pNetwork->pbTmp))
|
---|
3504 | return;
|
---|
3505 | //pSG->fFlags |= INTNETSG_FLAGS_PKT_CP_IN_TMP;
|
---|
3506 | pIpHdr = (PCRTNETIPV4)pNetwork->pbTmp;
|
---|
3507 | }
|
---|
3508 |
|
---|
3509 | /*
|
---|
3510 | * Validate the IP header and find the UDP packet.
|
---|
3511 | */
|
---|
3512 | if (!RTNetIPv4IsHdrValid(pIpHdr, cbPacket, pSG->cbTotal - sizeof(RTNETETHERHDR), true /*fCheckSum*/))
|
---|
3513 | {
|
---|
3514 | Log6(("intnetR0NetworkEditDhcpFromIntNet: bad ip header\n"));
|
---|
3515 | return;
|
---|
3516 | }
|
---|
3517 | size_t cbIpHdr = pIpHdr->ip_hl * 4;
|
---|
3518 | if ( pIpHdr->ip_p != RTNETIPV4_PROT_UDP /* DHCP is UDP. */
|
---|
3519 | || cbPacket < cbIpHdr + RTNETUDP_MIN_LEN + RTNETBOOTP_DHCP_MIN_LEN) /* Min DHCP packet len */
|
---|
3520 | return;
|
---|
3521 |
|
---|
3522 | size_t cbUdpPkt = cbPacket - cbIpHdr;
|
---|
3523 | PCRTNETUDP pUdpHdr = (PCRTNETUDP)((uintptr_t)pIpHdr + cbIpHdr);
|
---|
3524 | /* We are only interested in DHCP packets coming from client to server. */
|
---|
3525 | if ( RT_BE2H_U16(pUdpHdr->uh_dport) != RTNETIPV4_PORT_BOOTPS
|
---|
3526 | || RT_BE2H_U16(pUdpHdr->uh_sport) != RTNETIPV4_PORT_BOOTPC)
|
---|
3527 | return;
|
---|
3528 |
|
---|
3529 | /*
|
---|
3530 | * Check if the DHCP message is valid and get the type.
|
---|
3531 | */
|
---|
3532 | if (!RTNetIPv4IsUDPValid(pIpHdr, pUdpHdr, pUdpHdr + 1, cbUdpPkt, true /*fCheckSum*/))
|
---|
3533 | {
|
---|
3534 | Log6(("intnetR0NetworkEditDhcpFromIntNet: Bad UDP packet\n"));
|
---|
3535 | return;
|
---|
3536 | }
|
---|
3537 | PCRTNETBOOTP pDhcp = (PCRTNETBOOTP)(pUdpHdr + 1);
|
---|
3538 | uint8_t bMsgType;
|
---|
3539 | if (!RTNetIPv4IsDHCPValid(pUdpHdr, pDhcp, cbUdpPkt - sizeof(*pUdpHdr), &bMsgType))
|
---|
3540 | {
|
---|
3541 | Log6(("intnetR0NetworkEditDhcpFromIntNet: Bad DHCP packet\n"));
|
---|
3542 | return;
|
---|
3543 | }
|
---|
3544 |
|
---|
3545 | switch (bMsgType)
|
---|
3546 | {
|
---|
3547 | case RTNET_DHCP_MT_DISCOVER:
|
---|
3548 | case RTNET_DHCP_MT_REQUEST:
|
---|
3549 | /*
|
---|
3550 | * Must set the broadcast flag or we won't catch the respons.
|
---|
3551 | */
|
---|
3552 | if (!(pDhcp->bp_flags & RT_H2BE_U16_C(RTNET_DHCP_FLAG_BROADCAST)))
|
---|
3553 | {
|
---|
3554 | Log6(("intnetR0NetworkEditDhcpFromIntNet: Setting broadcast flag in DHCP %#x, previously %x\n",
|
---|
3555 | bMsgType, pDhcp->bp_flags));
|
---|
3556 |
|
---|
3557 | /* Patch flags */
|
---|
3558 | uint16_t uFlags = pDhcp->bp_flags | RT_H2BE_U16_C(RTNET_DHCP_FLAG_BROADCAST);
|
---|
3559 | intnetR0SgWritePart(pSG, (uintptr_t)&pDhcp->bp_flags - (uintptr_t)pIpHdr + sizeof(RTNETETHERHDR), sizeof(uFlags), &uFlags);
|
---|
3560 |
|
---|
3561 | /* Patch UDP checksum */
|
---|
3562 | if (pUdpHdr->uh_sum != 0)
|
---|
3563 | {
|
---|
3564 | uint32_t uChecksum = (uint32_t)~pUdpHdr->uh_sum + RT_H2BE_U16_C(RTNET_DHCP_FLAG_BROADCAST);
|
---|
3565 | while (uChecksum >> 16)
|
---|
3566 | uChecksum = (uChecksum >> 16) + (uChecksum & 0xFFFF);
|
---|
3567 | uChecksum = ~uChecksum;
|
---|
3568 | intnetR0SgWritePart(pSG,
|
---|
3569 | (uintptr_t)&pUdpHdr->uh_sum - (uintptr_t)pIpHdr + sizeof(RTNETETHERHDR),
|
---|
3570 | sizeof(pUdpHdr->uh_sum),
|
---|
3571 | &uChecksum);
|
---|
3572 | }
|
---|
3573 | }
|
---|
3574 |
|
---|
3575 | #ifdef RT_OS_DARWIN
|
---|
3576 | /*
|
---|
3577 | * Work around little endian checksum issue in mac os x 10.7.0 GM.
|
---|
3578 | */
|
---|
3579 | if ( pIpHdr->ip_tos
|
---|
3580 | && (pNetwork->fFlags & INTNET_OPEN_FLAGS_WORKAROUND_1))
|
---|
3581 | {
|
---|
3582 | /* Patch it. */
|
---|
3583 | uint8_t uTos = pIpHdr->ip_tos;
|
---|
3584 | uint8_t uZero = 0;
|
---|
3585 | intnetR0SgWritePart(pSG, sizeof(RTNETETHERHDR) + 1, sizeof(uZero), &uZero);
|
---|
3586 |
|
---|
3587 | /* Patch the IP header checksum. */
|
---|
3588 | uint32_t uChecksum = (uint32_t)~pIpHdr->ip_sum - (uTos << 8);
|
---|
3589 | while (uChecksum >> 16)
|
---|
3590 | uChecksum = (uChecksum >> 16) + (uChecksum & 0xFFFF);
|
---|
3591 | uChecksum = ~uChecksum;
|
---|
3592 |
|
---|
3593 | Log(("intnetR0NetworkEditDhcpFromIntNet: cleared ip_tos (was %#04x); ip_sum=%#06x -> %#06x\n",
|
---|
3594 | uTos, RT_BE2H_U16(pIpHdr->ip_sum), RT_BE2H_U16(uChecksum) ));
|
---|
3595 | intnetR0SgWritePart(pSG, sizeof(RTNETETHERHDR) + RT_UOFFSETOF(RTNETIPV4, ip_sum),
|
---|
3596 | sizeof(pIpHdr->ip_sum), &uChecksum);
|
---|
3597 | }
|
---|
3598 | #endif
|
---|
3599 | break;
|
---|
3600 | }
|
---|
3601 | }
|
---|
3602 |
|
---|
3603 |
|
---|
3604 | /**
|
---|
3605 | * Checks if the callers context is okay for sending to the specified
|
---|
3606 | * destinations.
|
---|
3607 | *
|
---|
3608 | * @returns true if it's okay, false if it isn't.
|
---|
3609 | * @param pNetwork The network.
|
---|
3610 | * @param pIfSender The interface sending or NULL if it's the trunk.
|
---|
3611 | * @param pDstTab The destination table.
|
---|
3612 | */
|
---|
3613 | DECLINLINE(bool) intnetR0NetworkIsContextOk(PINTNETNETWORK pNetwork, PINTNETIF pIfSender, PCINTNETDSTTAB pDstTab)
|
---|
3614 | {
|
---|
3615 | NOREF(pNetwork);
|
---|
3616 |
|
---|
3617 | /* Sending to the trunk is the problematic path. If the trunk is the
|
---|
3618 | sender we won't be sending to it, so no problem..
|
---|
3619 | Note! fTrunkDst may be set event if if the trunk is the sender. */
|
---|
3620 | if (!pIfSender)
|
---|
3621 | return true;
|
---|
3622 |
|
---|
3623 | uint32_t const fTrunkDst = pDstTab->fTrunkDst;
|
---|
3624 | if (!fTrunkDst)
|
---|
3625 | return true;
|
---|
3626 |
|
---|
3627 | /* ASSUMES: that the trunk won't change its report while we're checking. */
|
---|
3628 | PINTNETTRUNKIF pTrunk = pDstTab->pTrunk;
|
---|
3629 | if (pTrunk && (fTrunkDst & pTrunk->fNoPreemptDsts) == fTrunkDst)
|
---|
3630 | return true;
|
---|
3631 |
|
---|
3632 | /* ASSUMES: That a preemption test detects HM contexts. (Will work on
|
---|
3633 | non-preemptive systems as well.) */
|
---|
3634 | if (RTThreadPreemptIsEnabled(NIL_RTTHREAD))
|
---|
3635 | return true;
|
---|
3636 | return false;
|
---|
3637 | }
|
---|
3638 |
|
---|
3639 |
|
---|
3640 | /**
|
---|
3641 | * Checks if the callers context is okay for doing a broadcast given the
|
---|
3642 | * specified source.
|
---|
3643 | *
|
---|
3644 | * @returns true if it's okay, false if it isn't.
|
---|
3645 | * @param pNetwork The network.
|
---|
3646 | * @param fSrc The source of the packet. (0 (intnet),
|
---|
3647 | * INTNETTRUNKDIR_HOST or INTNETTRUNKDIR_WIRE).
|
---|
3648 | */
|
---|
3649 | DECLINLINE(bool) intnetR0NetworkIsContextOkForBroadcast(PINTNETNETWORK pNetwork, uint32_t fSrc)
|
---|
3650 | {
|
---|
3651 | /* Sending to the trunk is the problematic path. If the trunk is the
|
---|
3652 | sender we won't be sending to it, so no problem. */
|
---|
3653 | if (fSrc)
|
---|
3654 | return true;
|
---|
3655 |
|
---|
3656 | /* ASSUMES: That a preemption test detects HM contexts. (Will work on
|
---|
3657 | non-preemptive systems as well.) */
|
---|
3658 | if (RTThreadPreemptIsEnabled(NIL_RTTHREAD))
|
---|
3659 | return true;
|
---|
3660 |
|
---|
3661 | /* PARANOIA: Grab the spinlock to make sure the trunk structure cannot be
|
---|
3662 | freed while we're touching it. */
|
---|
3663 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
3664 | PINTNETTRUNKIF pTrunk = pNetwork->MacTab.pTrunk;
|
---|
3665 |
|
---|
3666 | bool fRc = !pTrunk
|
---|
3667 | || pTrunk->fNoPreemptDsts == (INTNETTRUNKDIR_HOST | INTNETTRUNKDIR_WIRE)
|
---|
3668 | || ( (!pNetwork->MacTab.fHostActive || (pTrunk->fNoPreemptDsts & INTNETTRUNKDIR_HOST) )
|
---|
3669 | && (!pNetwork->MacTab.fWireActive || (pTrunk->fNoPreemptDsts & INTNETTRUNKDIR_WIRE) ) );
|
---|
3670 |
|
---|
3671 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
3672 |
|
---|
3673 | return fRc;
|
---|
3674 | }
|
---|
3675 |
|
---|
3676 |
|
---|
3677 | /**
|
---|
3678 | * Check context, edit, snoop and switch a broadcast frame when sharing MAC
|
---|
3679 | * address on the wire.
|
---|
3680 | *
|
---|
3681 | * The caller must hold at least one interface on the network busy to prevent it
|
---|
3682 | * from destructing beath us.
|
---|
3683 | *
|
---|
3684 | * @param pNetwork The network the frame is being sent to.
|
---|
3685 | * @param fSrc The source of the packet. (0 (intnet),
|
---|
3686 | * INTNETTRUNKDIR_HOST or INTNETTRUNKDIR_WIRE).
|
---|
3687 | * @param pIfSender The sender interface, NULL if trunk. Used to
|
---|
3688 | * prevent sending an echo to the sender.
|
---|
3689 | * @param pSG Pointer to the gather list.
|
---|
3690 | * @param pEthHdr Pointer to the ethernet header.
|
---|
3691 | * @param pDstTab The destination output table.
|
---|
3692 | */
|
---|
3693 | static INTNETSWDECISION intnetR0NetworkSharedMacFixAndSwitchBroadcast(PINTNETNETWORK pNetwork,
|
---|
3694 | uint32_t fSrc, PINTNETIF pIfSender,
|
---|
3695 | PINTNETSG pSG, PRTNETETHERHDR pEthHdr,
|
---|
3696 | PINTNETDSTTAB pDstTab)
|
---|
3697 | {
|
---|
3698 | /*
|
---|
3699 | * Before doing any work here, we need to figure out if we can handle it
|
---|
3700 | * in the current context. The restrictions are solely on the trunk.
|
---|
3701 | *
|
---|
3702 | * Note! Since at least one interface is busy, there won't be any changes
|
---|
3703 | * to the parameters here (unless the trunk changes its capability
|
---|
3704 | * report, which it shouldn't).
|
---|
3705 | */
|
---|
3706 | if (!intnetR0NetworkIsContextOkForBroadcast(pNetwork, fSrc))
|
---|
3707 | return INTNETSWDECISION_BAD_CONTEXT;
|
---|
3708 |
|
---|
3709 | /*
|
---|
3710 | * Check for ICMPv6 Neighbor Advertisements coming from the trunk.
|
---|
3711 | * If we see an advertisement for an IP in our cache, we can safely remove
|
---|
3712 | * it as the IP has probably moved.
|
---|
3713 | */
|
---|
3714 | if ( (fSrc & INTNETTRUNKDIR_WIRE)
|
---|
3715 | && RT_BE2H_U16(pEthHdr->EtherType) == RTNET_ETHERTYPE_IPV6
|
---|
3716 | && pSG->GsoCtx.u8Type == PDMNETWORKGSOTYPE_INVALID)
|
---|
3717 | intnetR0NetworkSnoopNAFromWire(pNetwork, pSG, pEthHdr);
|
---|
3718 |
|
---|
3719 |
|
---|
3720 | /*
|
---|
3721 | * Check for ARP packets from the wire since we'll have to make
|
---|
3722 | * modification to them if we're sharing the MAC address with the host.
|
---|
3723 | */
|
---|
3724 | if ( (fSrc & INTNETTRUNKDIR_WIRE)
|
---|
3725 | && RT_BE2H_U16(pEthHdr->EtherType) == RTNET_ETHERTYPE_ARP
|
---|
3726 | && pSG->GsoCtx.u8Type == PDMNETWORKGSOTYPE_INVALID)
|
---|
3727 | intnetR0NetworkEditArpFromWire(pNetwork, pSG, pEthHdr);
|
---|
3728 |
|
---|
3729 | /*
|
---|
3730 | * Check for DHCP packets from the internal net since we'll have to set
|
---|
3731 | * broadcast flag in DHCP requests if we're sharing the MAC address with
|
---|
3732 | * the host. GSO is not applicable to DHCP traffic.
|
---|
3733 | */
|
---|
3734 | if ( !fSrc
|
---|
3735 | && RT_BE2H_U16(pEthHdr->EtherType) == RTNET_ETHERTYPE_IPV4
|
---|
3736 | && pSG->GsoCtx.u8Type == PDMNETWORKGSOTYPE_INVALID)
|
---|
3737 | intnetR0NetworkEditDhcpFromIntNet(pNetwork, pSG, pEthHdr);
|
---|
3738 |
|
---|
3739 | /*
|
---|
3740 | * Snoop address info from packet originating from the trunk connection.
|
---|
3741 | */
|
---|
3742 | if (fSrc)
|
---|
3743 | {
|
---|
3744 | #ifdef INTNET_WITH_DHCP_SNOOPING
|
---|
3745 | uint16_t EtherType = RT_BE2H_U16(pEthHdr->EtherType);
|
---|
3746 | if ( ( EtherType == RTNET_ETHERTYPE_IPV4 /* for DHCP */
|
---|
3747 | && pSG->cbTotal >= sizeof(RTNETETHERHDR) + RTNETIPV4_MIN_LEN + RTNETUDP_MIN_LEN + RTNETBOOTP_DHCP_MIN_LEN
|
---|
3748 | && pSG->GsoCtx.u8Type == PDMNETWORKGSOTYPE_INVALID )
|
---|
3749 | || (pSG->fFlags & INTNETSG_FLAGS_ARP_IPV4) )
|
---|
3750 | intnetR0TrunkIfSnoopAddr(pNetwork, pSG, EtherType);
|
---|
3751 | #else
|
---|
3752 | if (pSG->fFlags & INTNETSG_FLAGS_ARP_IPV4)
|
---|
3753 | intnetR0TrunkIfSnoopArp(pNetwork, pSG);
|
---|
3754 | #endif
|
---|
3755 | }
|
---|
3756 |
|
---|
3757 | /*
|
---|
3758 | * Create the broadcast destination table.
|
---|
3759 | */
|
---|
3760 | return intnetR0NetworkSwitchBroadcast(pNetwork, fSrc, pIfSender, pDstTab);
|
---|
3761 | }
|
---|
3762 |
|
---|
3763 |
|
---|
3764 | /**
|
---|
3765 | * Check context, snoop and switch a unicast frame using the network layer
|
---|
3766 | * address of the link layer one (when sharing MAC address on the wire).
|
---|
3767 | *
|
---|
3768 | * This function is only used for frames coming from the wire (trunk).
|
---|
3769 | *
|
---|
3770 | * @returns true if it's addressed to someone on the network, otherwise false.
|
---|
3771 | * @param pNetwork The network the frame is being sent to.
|
---|
3772 | * @param pSG Pointer to the gather list.
|
---|
3773 | * @param pEthHdr Pointer to the ethernet header.
|
---|
3774 | * @param pDstTab The destination output table.
|
---|
3775 | */
|
---|
3776 | static INTNETSWDECISION intnetR0NetworkSharedMacFixAndSwitchUnicast(PINTNETNETWORK pNetwork, PINTNETSG pSG,
|
---|
3777 | PRTNETETHERHDR pEthHdr, PINTNETDSTTAB pDstTab)
|
---|
3778 | {
|
---|
3779 | /*
|
---|
3780 | * Extract the network address from the packet.
|
---|
3781 | */
|
---|
3782 | RTNETADDRU Addr;
|
---|
3783 | INTNETADDRTYPE enmAddrType;
|
---|
3784 | uint8_t cbAddr;
|
---|
3785 | switch (RT_BE2H_U16(pEthHdr->EtherType))
|
---|
3786 | {
|
---|
3787 | case RTNET_ETHERTYPE_IPV4:
|
---|
3788 | if (RT_UNLIKELY(!intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR) + RT_UOFFSETOF(RTNETIPV4, ip_dst), sizeof(Addr.IPv4), &Addr)))
|
---|
3789 | {
|
---|
3790 | Log(("intnetshareduni: failed to read ip_dst! cbTotal=%#x\n", pSG->cbTotal));
|
---|
3791 | return intnetR0NetworkSwitchTrunk(pNetwork, INTNETTRUNKDIR_WIRE, pDstTab);
|
---|
3792 | }
|
---|
3793 | enmAddrType = kIntNetAddrType_IPv4;
|
---|
3794 | cbAddr = sizeof(Addr.IPv4);
|
---|
3795 | Log6(("intnetshareduni: IPv4 %d.%d.%d.%d\n", Addr.au8[0], Addr.au8[1], Addr.au8[2], Addr.au8[3]));
|
---|
3796 | break;
|
---|
3797 |
|
---|
3798 | case RTNET_ETHERTYPE_IPV6:
|
---|
3799 | if (RT_UNLIKELY(!intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR) + RT_UOFFSETOF(RTNETIPV6, ip6_dst), sizeof(Addr.IPv6), &Addr)))
|
---|
3800 | {
|
---|
3801 | Log(("intnetshareduni: failed to read ip6_dst! cbTotal=%#x\n", pSG->cbTotal));
|
---|
3802 | return intnetR0NetworkSwitchTrunk(pNetwork, INTNETTRUNKDIR_WIRE, pDstTab);
|
---|
3803 | }
|
---|
3804 | enmAddrType = kIntNetAddrType_IPv6;
|
---|
3805 | cbAddr = sizeof(Addr.IPv6);
|
---|
3806 | break;
|
---|
3807 | #if 0 /** @todo IntNet: implement IPX for wireless MAC sharing? */
|
---|
3808 | case RTNET_ETHERTYPE_IPX_1:
|
---|
3809 | case RTNET_ETHERTYPE_IPX_2:
|
---|
3810 | case RTNET_ETHERTYPE_IPX_3:
|
---|
3811 | if (RT_UNLIKELY(!intnetR0SgReadPart(pSG, sizeof(RTNETETHERHDR) + RT_OFFSETOF(RTNETIPX, ipx_dstnet), sizeof(Addr.IPX), &Addr)))
|
---|
3812 | {
|
---|
3813 | Log(("intnetshareduni: failed to read ipx_dstnet! cbTotal=%#x\n", pSG->cbTotal));
|
---|
3814 | return intnetR0NetworkSwitchTrunk(pNetwork, INTNETTRUNKDIR_WIRE, pDstTab);
|
---|
3815 | }
|
---|
3816 | enmAddrType = kIntNetAddrType_IPX;
|
---|
3817 | cbAddr = sizeof(Addr.IPX);
|
---|
3818 | break;
|
---|
3819 | #endif
|
---|
3820 |
|
---|
3821 | /*
|
---|
3822 | * Treat ARP as broadcast (it shouldn't end up here normally,
|
---|
3823 | * so it goes last in the switch).
|
---|
3824 | */
|
---|
3825 | case RTNET_ETHERTYPE_ARP:
|
---|
3826 | Log6(("intnetshareduni: ARP\n"));
|
---|
3827 | /** @todo revisit this broadcasting of unicast ARP frames! */
|
---|
3828 | return intnetR0NetworkSharedMacFixAndSwitchBroadcast(pNetwork, INTNETTRUNKDIR_WIRE, NULL, pSG, pEthHdr, pDstTab);
|
---|
3829 |
|
---|
3830 | /*
|
---|
3831 | * Unknown packets are sent to the trunk and any promiscuous interfaces.
|
---|
3832 | */
|
---|
3833 | default:
|
---|
3834 | {
|
---|
3835 | Log6(("intnetshareduni: unknown ethertype=%#x\n", RT_BE2H_U16(pEthHdr->EtherType)));
|
---|
3836 | return intnetR0NetworkSwitchTrunkAndPromisc(pNetwork, INTNETTRUNKDIR_WIRE, pDstTab);
|
---|
3837 | }
|
---|
3838 | }
|
---|
3839 |
|
---|
3840 | /*
|
---|
3841 | * Do level-3 switching.
|
---|
3842 | */
|
---|
3843 | INTNETSWDECISION enmSwDecision = intnetR0NetworkSwitchLevel3(pNetwork, &pEthHdr->DstMac,
|
---|
3844 | enmAddrType, &Addr, cbAddr,
|
---|
3845 | INTNETTRUNKDIR_WIRE, pDstTab);
|
---|
3846 |
|
---|
3847 | #ifdef INTNET_WITH_DHCP_SNOOPING
|
---|
3848 | /*
|
---|
3849 | * Perform DHCP snooping. GSO is not applicable to DHCP traffic
|
---|
3850 | */
|
---|
3851 | if ( enmAddrType == kIntNetAddrType_IPv4
|
---|
3852 | && pSG->cbTotal >= sizeof(RTNETETHERHDR) + RTNETIPV4_MIN_LEN + RTNETUDP_MIN_LEN + RTNETBOOTP_DHCP_MIN_LEN
|
---|
3853 | && pSG->GsoCtx.u8Type == PDMNETWORKGSOTYPE_INVALID)
|
---|
3854 | intnetR0TrunkIfSnoopAddr(pNetwork, pSG, RT_BE2H_U16(pEthHdr->EtherType));
|
---|
3855 | #endif /* INTNET_WITH_DHCP_SNOOPING */
|
---|
3856 |
|
---|
3857 | return enmSwDecision;
|
---|
3858 | }
|
---|
3859 |
|
---|
3860 |
|
---|
3861 | /**
|
---|
3862 | * Release all the interfaces in the destination table when we realize that
|
---|
3863 | * we're in a context where we cannot get the job done.
|
---|
3864 | *
|
---|
3865 | * @param pNetwork The network.
|
---|
3866 | * @param pDstTab The destination table.
|
---|
3867 | */
|
---|
3868 | static void intnetR0NetworkReleaseDstTab(PINTNETNETWORK pNetwork, PINTNETDSTTAB pDstTab)
|
---|
3869 | {
|
---|
3870 | /* The trunk interface. */
|
---|
3871 | if (pDstTab->fTrunkDst)
|
---|
3872 | {
|
---|
3873 | PINTNETTRUNKIF pTrunk = pDstTab->pTrunk;
|
---|
3874 | if (pTrunk)
|
---|
3875 | intnetR0BusyDec(pNetwork, &pTrunk->cBusy);
|
---|
3876 | pDstTab->pTrunk = NULL;
|
---|
3877 | pDstTab->fTrunkDst = 0;
|
---|
3878 | }
|
---|
3879 |
|
---|
3880 | /* Regular interfaces. */
|
---|
3881 | uint32_t iIf = pDstTab->cIfs;
|
---|
3882 | while (iIf-- > 0)
|
---|
3883 | {
|
---|
3884 | PINTNETIF pIf = pDstTab->aIfs[iIf].pIf;
|
---|
3885 | intnetR0BusyDecIf(pIf);
|
---|
3886 | pDstTab->aIfs[iIf].pIf = NULL;
|
---|
3887 | }
|
---|
3888 | pDstTab->cIfs = 0;
|
---|
3889 | }
|
---|
3890 |
|
---|
3891 |
|
---|
3892 | /**
|
---|
3893 | * Deliver the frame to the interfaces specified in the destination table.
|
---|
3894 | *
|
---|
3895 | * @param pNetwork The network.
|
---|
3896 | * @param pDstTab The destination table.
|
---|
3897 | * @param pSG The frame to send.
|
---|
3898 | * @param pIfSender The sender interface. NULL if it originated via
|
---|
3899 | * the trunk.
|
---|
3900 | */
|
---|
3901 | static void intnetR0NetworkDeliver(PINTNETNETWORK pNetwork, PINTNETDSTTAB pDstTab, PINTNETSG pSG, PINTNETIF pIfSender)
|
---|
3902 | {
|
---|
3903 | /*
|
---|
3904 | * Do the interfaces first before sending it to the wire and risk having to
|
---|
3905 | * modify it.
|
---|
3906 | */
|
---|
3907 | uint32_t iIf = pDstTab->cIfs;
|
---|
3908 | while (iIf-- > 0)
|
---|
3909 | {
|
---|
3910 | PINTNETIF pIf = pDstTab->aIfs[iIf].pIf;
|
---|
3911 | intnetR0IfSend(pIf, pIfSender, pSG,
|
---|
3912 | pDstTab->aIfs[iIf].fReplaceDstMac ? &pIf->MacAddr: NULL);
|
---|
3913 | intnetR0BusyDecIf(pIf);
|
---|
3914 | pDstTab->aIfs[iIf].pIf = NULL;
|
---|
3915 | }
|
---|
3916 | pDstTab->cIfs = 0;
|
---|
3917 |
|
---|
3918 | /*
|
---|
3919 | * Send to the trunk.
|
---|
3920 | *
|
---|
3921 | * Note! The switching functions will include the trunk even when the frame
|
---|
3922 | * source is the trunk. This is because we need it to figure out
|
---|
3923 | * whether the other half of the trunk should see the frame or not
|
---|
3924 | * and let the caller know.
|
---|
3925 | *
|
---|
3926 | * So, we'll ignore trunk sends here if the frame origin is
|
---|
3927 | * INTNETTRUNKSWPORT::pfnRecv.
|
---|
3928 | */
|
---|
3929 | if (pDstTab->fTrunkDst)
|
---|
3930 | {
|
---|
3931 | PINTNETTRUNKIF pTrunk = pDstTab->pTrunk;
|
---|
3932 | if (pTrunk)
|
---|
3933 | {
|
---|
3934 | if (pIfSender)
|
---|
3935 | intnetR0TrunkIfSend(pTrunk, pNetwork, pIfSender, pDstTab->fTrunkDst, pSG);
|
---|
3936 | intnetR0BusyDec(pNetwork, &pTrunk->cBusy);
|
---|
3937 | }
|
---|
3938 | pDstTab->pTrunk = NULL;
|
---|
3939 | pDstTab->fTrunkDst = 0;
|
---|
3940 | }
|
---|
3941 | }
|
---|
3942 |
|
---|
3943 |
|
---|
3944 | /**
|
---|
3945 | * Sends a frame.
|
---|
3946 | *
|
---|
3947 | * This function will distribute the frame to the interfaces it is addressed to.
|
---|
3948 | * It will also update the MAC address of the sender.
|
---|
3949 | *
|
---|
3950 | * The caller must own the network mutex.
|
---|
3951 | *
|
---|
3952 | * @returns The switching decision.
|
---|
3953 | * @param pNetwork The network the frame is being sent to.
|
---|
3954 | * @param pIfSender The interface sending the frame. This is NULL if it's the trunk.
|
---|
3955 | * @param fSrc The source flags. This 0 if it's not from the trunk.
|
---|
3956 | * @param pSG Pointer to the gather list.
|
---|
3957 | * @param pDstTab The destination table to use.
|
---|
3958 | */
|
---|
3959 | static INTNETSWDECISION intnetR0NetworkSend(PINTNETNETWORK pNetwork, PINTNETIF pIfSender, uint32_t fSrc,
|
---|
3960 | PINTNETSG pSG, PINTNETDSTTAB pDstTab)
|
---|
3961 | {
|
---|
3962 | /*
|
---|
3963 | * Assert reality.
|
---|
3964 | */
|
---|
3965 | AssertPtr(pNetwork);
|
---|
3966 | AssertPtrNull(pIfSender);
|
---|
3967 | Assert(pIfSender ? fSrc == 0 : fSrc != 0);
|
---|
3968 | Assert(!pIfSender || pNetwork == pIfSender->pNetwork);
|
---|
3969 | AssertPtr(pSG);
|
---|
3970 | Assert(pSG->cSegsUsed >= 1);
|
---|
3971 | Assert(pSG->cSegsUsed <= pSG->cSegsAlloc);
|
---|
3972 | if (pSG->cbTotal < sizeof(RTNETETHERHDR))
|
---|
3973 | return INTNETSWDECISION_INVALID;
|
---|
3974 |
|
---|
3975 | /*
|
---|
3976 | * Get the ethernet header (might theoretically involve multiple segments).
|
---|
3977 | */
|
---|
3978 | RTNETETHERHDR EthHdr;
|
---|
3979 | if (pSG->aSegs[0].cb >= sizeof(EthHdr))
|
---|
3980 | EthHdr = *(PCRTNETETHERHDR)pSG->aSegs[0].pv;
|
---|
3981 | else if (!intnetR0SgReadPart(pSG, 0, sizeof(EthHdr), &EthHdr))
|
---|
3982 | return INTNETSWDECISION_INVALID;
|
---|
3983 | if ( (EthHdr.DstMac.au8[0] == 0x08 && EthHdr.DstMac.au8[1] == 0x00 && EthHdr.DstMac.au8[2] == 0x27)
|
---|
3984 | || (EthHdr.SrcMac.au8[0] == 0x08 && EthHdr.SrcMac.au8[1] == 0x00 && EthHdr.SrcMac.au8[2] == 0x27)
|
---|
3985 | || (EthHdr.DstMac.au8[0] == 0x00 && EthHdr.DstMac.au8[1] == 0x16 && EthHdr.DstMac.au8[2] == 0xcb)
|
---|
3986 | || (EthHdr.SrcMac.au8[0] == 0x00 && EthHdr.SrcMac.au8[1] == 0x16 && EthHdr.SrcMac.au8[2] == 0xcb)
|
---|
3987 | || EthHdr.DstMac.au8[0] == 0xff
|
---|
3988 | || EthHdr.SrcMac.au8[0] == 0xff)
|
---|
3989 | Log2(("D=%.6Rhxs S=%.6Rhxs T=%04x f=%x z=%x\n",
|
---|
3990 | &EthHdr.DstMac, &EthHdr.SrcMac, RT_BE2H_U16(EthHdr.EtherType), fSrc, pSG->cbTotal));
|
---|
3991 |
|
---|
3992 | /*
|
---|
3993 | * Learn the MAC address of the sender. No re-learning as the interface
|
---|
3994 | * user will normally tell us the right MAC address.
|
---|
3995 | *
|
---|
3996 | * Note! We don't notify the trunk about these mainly because of the
|
---|
3997 | * problematic contexts we might be called in.
|
---|
3998 | */
|
---|
3999 | if (RT_UNLIKELY( pIfSender
|
---|
4000 | && !pIfSender->fMacSet
|
---|
4001 | && memcmp(&EthHdr.SrcMac, &pIfSender->MacAddr, sizeof(pIfSender->MacAddr))
|
---|
4002 | && !intnetR0IsMacAddrMulticast(&EthHdr.SrcMac)
|
---|
4003 | ))
|
---|
4004 | {
|
---|
4005 | Log2(("IF MAC: %.6Rhxs -> %.6Rhxs\n", &pIfSender->MacAddr, &EthHdr.SrcMac));
|
---|
4006 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
4007 |
|
---|
4008 | PINTNETMACTABENTRY pIfEntry = intnetR0NetworkFindMacAddrEntry(pNetwork, pIfSender);
|
---|
4009 | if (pIfEntry)
|
---|
4010 | pIfEntry->MacAddr = EthHdr.SrcMac;
|
---|
4011 | pIfSender->MacAddr = EthHdr.SrcMac;
|
---|
4012 |
|
---|
4013 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
4014 | }
|
---|
4015 |
|
---|
4016 | /*
|
---|
4017 | * Deal with MAC address sharing as that may required editing of the
|
---|
4018 | * packets before we dispatch them anywhere.
|
---|
4019 | */
|
---|
4020 | INTNETSWDECISION enmSwDecision;
|
---|
4021 | if (pNetwork->fFlags & INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE)
|
---|
4022 | {
|
---|
4023 | if (intnetR0IsMacAddrMulticast(&EthHdr.DstMac))
|
---|
4024 | enmSwDecision = intnetR0NetworkSharedMacFixAndSwitchBroadcast(pNetwork, fSrc, pIfSender, pSG, &EthHdr, pDstTab);
|
---|
4025 | else if (fSrc & INTNETTRUNKDIR_WIRE)
|
---|
4026 | {
|
---|
4027 | if (intnetR0NetworkSharedMacDetectAndFixBroadcast(pNetwork, pSG, &EthHdr))
|
---|
4028 | enmSwDecision = intnetR0NetworkSharedMacFixAndSwitchBroadcast(pNetwork, fSrc, pIfSender, pSG, &EthHdr, pDstTab);
|
---|
4029 | else
|
---|
4030 | enmSwDecision = intnetR0NetworkSharedMacFixAndSwitchUnicast(pNetwork, pSG, &EthHdr, pDstTab);
|
---|
4031 | }
|
---|
4032 | else
|
---|
4033 | enmSwDecision = intnetR0NetworkSwitchUnicast(pNetwork, fSrc, pIfSender, &EthHdr.DstMac, pDstTab);
|
---|
4034 | }
|
---|
4035 | else if (intnetR0IsMacAddrMulticast(&EthHdr.DstMac))
|
---|
4036 | enmSwDecision = intnetR0NetworkSwitchBroadcast(pNetwork, fSrc, pIfSender, pDstTab);
|
---|
4037 | else
|
---|
4038 | enmSwDecision = intnetR0NetworkSwitchUnicast(pNetwork, fSrc, pIfSender, &EthHdr.DstMac, pDstTab);
|
---|
4039 |
|
---|
4040 | /*
|
---|
4041 | * Deliver to the destinations if we can.
|
---|
4042 | */
|
---|
4043 | if (enmSwDecision != INTNETSWDECISION_BAD_CONTEXT)
|
---|
4044 | {
|
---|
4045 | if (intnetR0NetworkIsContextOk(pNetwork, pIfSender, pDstTab))
|
---|
4046 | intnetR0NetworkDeliver(pNetwork, pDstTab, pSG, pIfSender);
|
---|
4047 | else
|
---|
4048 | {
|
---|
4049 | intnetR0NetworkReleaseDstTab(pNetwork, pDstTab);
|
---|
4050 | enmSwDecision = INTNETSWDECISION_BAD_CONTEXT;
|
---|
4051 | }
|
---|
4052 | }
|
---|
4053 |
|
---|
4054 | return enmSwDecision;
|
---|
4055 | }
|
---|
4056 |
|
---|
4057 |
|
---|
4058 | /**
|
---|
4059 | * Sends one or more frames.
|
---|
4060 | *
|
---|
4061 | * The function will first the frame which is passed as the optional arguments
|
---|
4062 | * pvFrame and cbFrame. These are optional since it also possible to chain
|
---|
4063 | * together one or more frames in the send buffer which the function will
|
---|
4064 | * process after considering it's arguments.
|
---|
4065 | *
|
---|
4066 | * The caller is responsible for making sure that there are no concurrent calls
|
---|
4067 | * to this method (with the same handle).
|
---|
4068 | *
|
---|
4069 | * @returns VBox status code.
|
---|
4070 | * @param hIf The interface handle.
|
---|
4071 | * @param pSession The caller's session.
|
---|
4072 | */
|
---|
4073 | INTNETR0DECL(int) IntNetR0IfSend(INTNETIFHANDLE hIf, PSUPDRVSESSION pSession)
|
---|
4074 | {
|
---|
4075 | Log5(("IntNetR0IfSend: hIf=%RX32\n", hIf));
|
---|
4076 |
|
---|
4077 | /*
|
---|
4078 | * Validate input and translate the handle.
|
---|
4079 | */
|
---|
4080 | PINTNET pIntNet = g_pIntNet;
|
---|
4081 | AssertPtrReturn(pIntNet, VERR_INVALID_PARAMETER);
|
---|
4082 | AssertReturn(pIntNet->u32Magic, VERR_INVALID_MAGIC);
|
---|
4083 |
|
---|
4084 | PINTNETIF pIf = (PINTNETIF)RTHandleTableLookupWithCtx(pIntNet->hHtIfs, hIf, pSession);
|
---|
4085 | if (!pIf)
|
---|
4086 | return VERR_INVALID_HANDLE;
|
---|
4087 | STAM_REL_PROFILE_START(&pIf->pIntBuf->StatSend1, a);
|
---|
4088 |
|
---|
4089 | /*
|
---|
4090 | * Make sure we've got a network.
|
---|
4091 | */
|
---|
4092 | int rc = VINF_SUCCESS;
|
---|
4093 | intnetR0BusyIncIf(pIf);
|
---|
4094 | PINTNETNETWORK pNetwork = pIf->pNetwork;
|
---|
4095 | if (RT_LIKELY(pNetwork))
|
---|
4096 | {
|
---|
4097 | /*
|
---|
4098 | * Grab the destination table.
|
---|
4099 | */
|
---|
4100 | PINTNETDSTTAB pDstTab = ASMAtomicXchgPtrT(&pIf->pDstTab, NULL, PINTNETDSTTAB);
|
---|
4101 | if (RT_LIKELY(pDstTab))
|
---|
4102 | {
|
---|
4103 | /*
|
---|
4104 | * Process the send buffer.
|
---|
4105 | */
|
---|
4106 | INTNETSWDECISION enmSwDecision = INTNETSWDECISION_BROADCAST;
|
---|
4107 | INTNETSG Sg; /** @todo this will have to be changed if we're going to use async sending
|
---|
4108 | * with buffer sharing for some OS or service. Darwin copies everything so
|
---|
4109 | * I won't bother allocating and managing SGs right now. Sorry. */
|
---|
4110 | PINTNETHDR pHdr;
|
---|
4111 | while ((pHdr = IntNetRingGetNextFrameToRead(&pIf->pIntBuf->Send)) != NULL)
|
---|
4112 | {
|
---|
4113 | uint8_t const u8Type = pHdr->u8Type;
|
---|
4114 | if (u8Type == INTNETHDR_TYPE_FRAME)
|
---|
4115 | {
|
---|
4116 | /* Send regular frame. */
|
---|
4117 | void *pvCurFrame = IntNetHdrGetFramePtr(pHdr, pIf->pIntBuf);
|
---|
4118 | IntNetSgInitTemp(&Sg, pvCurFrame, pHdr->cbFrame);
|
---|
4119 | if (pNetwork->fFlags & INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE)
|
---|
4120 | intnetR0IfSnoopAddr(pIf, (uint8_t *)pvCurFrame, pHdr->cbFrame, false /*fGso*/, (uint16_t *)&Sg.fFlags);
|
---|
4121 | enmSwDecision = intnetR0NetworkSend(pNetwork, pIf, 0 /*fSrc*/, &Sg, pDstTab);
|
---|
4122 | }
|
---|
4123 | else if (u8Type == INTNETHDR_TYPE_GSO)
|
---|
4124 | {
|
---|
4125 | /* Send GSO frame if sane. */
|
---|
4126 | PPDMNETWORKGSO pGso = IntNetHdrGetGsoContext(pHdr, pIf->pIntBuf);
|
---|
4127 | uint32_t cbFrame = pHdr->cbFrame - sizeof(*pGso);
|
---|
4128 | if (RT_LIKELY(PDMNetGsoIsValid(pGso, pHdr->cbFrame, cbFrame)))
|
---|
4129 | {
|
---|
4130 | void *pvCurFrame = pGso + 1;
|
---|
4131 | IntNetSgInitTempGso(&Sg, pvCurFrame, cbFrame, pGso);
|
---|
4132 | if (pNetwork->fFlags & INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE)
|
---|
4133 | intnetR0IfSnoopAddr(pIf, (uint8_t *)pvCurFrame, cbFrame, true /*fGso*/, (uint16_t *)&Sg.fFlags);
|
---|
4134 | enmSwDecision = intnetR0NetworkSend(pNetwork, pIf, 0 /*fSrc*/, &Sg, pDstTab);
|
---|
4135 | }
|
---|
4136 | else
|
---|
4137 | {
|
---|
4138 | STAM_REL_COUNTER_INC(&pIf->pIntBuf->cStatBadFrames); /* ignore */
|
---|
4139 | enmSwDecision = INTNETSWDECISION_DROP;
|
---|
4140 | }
|
---|
4141 | }
|
---|
4142 | /* Unless it's a padding frame, we're getting babble from the producer. */
|
---|
4143 | else
|
---|
4144 | {
|
---|
4145 | if (u8Type != INTNETHDR_TYPE_PADDING)
|
---|
4146 | STAM_REL_COUNTER_INC(&pIf->pIntBuf->cStatBadFrames); /* ignore */
|
---|
4147 | enmSwDecision = INTNETSWDECISION_DROP;
|
---|
4148 | }
|
---|
4149 | if (enmSwDecision == INTNETSWDECISION_BAD_CONTEXT)
|
---|
4150 | {
|
---|
4151 | rc = VERR_TRY_AGAIN;
|
---|
4152 | break;
|
---|
4153 | }
|
---|
4154 |
|
---|
4155 | /* Skip to the next frame. */
|
---|
4156 | IntNetRingSkipFrame(&pIf->pIntBuf->Send);
|
---|
4157 | }
|
---|
4158 |
|
---|
4159 | /*
|
---|
4160 | * Put back the destination table.
|
---|
4161 | */
|
---|
4162 | Assert(!pIf->pDstTab);
|
---|
4163 | ASMAtomicWritePtr(&pIf->pDstTab, pDstTab);
|
---|
4164 | }
|
---|
4165 | else
|
---|
4166 | rc = VERR_INTERNAL_ERROR_4;
|
---|
4167 | }
|
---|
4168 | else
|
---|
4169 | rc = VERR_INTERNAL_ERROR_3;
|
---|
4170 |
|
---|
4171 | /*
|
---|
4172 | * Release the interface.
|
---|
4173 | */
|
---|
4174 | intnetR0BusyDecIf(pIf);
|
---|
4175 | STAM_REL_PROFILE_STOP(&pIf->pIntBuf->StatSend1, a);
|
---|
4176 | intnetR0IfRelease(pIf, pSession);
|
---|
4177 | return rc;
|
---|
4178 | }
|
---|
4179 |
|
---|
4180 |
|
---|
4181 | /**
|
---|
4182 | * VMMR0 request wrapper for IntNetR0IfSend.
|
---|
4183 | *
|
---|
4184 | * @returns see IntNetR0IfSend.
|
---|
4185 | * @param pSession The caller's session.
|
---|
4186 | * @param pReq The request packet.
|
---|
4187 | */
|
---|
4188 | INTNETR0DECL(int) IntNetR0IfSendReq(PSUPDRVSESSION pSession, PINTNETIFSENDREQ pReq)
|
---|
4189 | {
|
---|
4190 | if (RT_UNLIKELY(pReq->Hdr.cbReq != sizeof(*pReq)))
|
---|
4191 | return VERR_INVALID_PARAMETER;
|
---|
4192 | return IntNetR0IfSend(pReq->hIf, pSession);
|
---|
4193 | }
|
---|
4194 |
|
---|
4195 |
|
---|
4196 | /**
|
---|
4197 | * Maps the default buffer into ring 3.
|
---|
4198 | *
|
---|
4199 | * @returns VBox status code.
|
---|
4200 | * @param hIf The interface handle.
|
---|
4201 | * @param pSession The caller's session.
|
---|
4202 | * @param ppRing3Buf Where to store the address of the ring-3 mapping
|
---|
4203 | * (optional).
|
---|
4204 | * @param ppRing0Buf Where to store the address of the ring-0 mapping
|
---|
4205 | * (optional).
|
---|
4206 | */
|
---|
4207 | INTNETR0DECL(int) IntNetR0IfGetBufferPtrs(INTNETIFHANDLE hIf, PSUPDRVSESSION pSession,
|
---|
4208 | R3PTRTYPE(PINTNETBUF) *ppRing3Buf, R0PTRTYPE(PINTNETBUF) *ppRing0Buf)
|
---|
4209 | {
|
---|
4210 | LogFlow(("IntNetR0IfGetBufferPtrs: hIf=%RX32 ppRing3Buf=%p ppRing0Buf=%p\n", hIf, ppRing3Buf, ppRing0Buf));
|
---|
4211 |
|
---|
4212 | /*
|
---|
4213 | * Validate input.
|
---|
4214 | */
|
---|
4215 | PINTNET pIntNet = g_pIntNet;
|
---|
4216 | AssertPtrReturn(pIntNet, VERR_INVALID_PARAMETER);
|
---|
4217 | AssertReturn(pIntNet->u32Magic, VERR_INVALID_MAGIC);
|
---|
4218 |
|
---|
4219 | AssertPtrNullReturn(ppRing3Buf, VERR_INVALID_PARAMETER);
|
---|
4220 | AssertPtrNullReturn(ppRing0Buf, VERR_INVALID_PARAMETER);
|
---|
4221 | if (ppRing3Buf)
|
---|
4222 | *ppRing3Buf = 0;
|
---|
4223 | if (ppRing0Buf)
|
---|
4224 | *ppRing0Buf = 0;
|
---|
4225 |
|
---|
4226 | PINTNETIF pIf = (PINTNETIF)RTHandleTableLookupWithCtx(pIntNet->hHtIfs, hIf, pSession);
|
---|
4227 | if (!pIf)
|
---|
4228 | return VERR_INVALID_HANDLE;
|
---|
4229 |
|
---|
4230 | /*
|
---|
4231 | * ASSUMES that only the process that created an interface can use it.
|
---|
4232 | * ASSUMES that we created the ring-3 mapping when selecting or
|
---|
4233 | * allocating the buffer.
|
---|
4234 | */
|
---|
4235 | int rc = RTSemMutexRequest(pIntNet->hMtxCreateOpenDestroy, RT_INDEFINITE_WAIT);
|
---|
4236 | if (RT_SUCCESS(rc))
|
---|
4237 | {
|
---|
4238 | if (ppRing3Buf)
|
---|
4239 | *ppRing3Buf = pIf->pIntBufR3;
|
---|
4240 | if (ppRing0Buf)
|
---|
4241 | *ppRing0Buf = (R0PTRTYPE(PINTNETBUF))pIf->pIntBuf; /* tstIntNetR0 mess */
|
---|
4242 |
|
---|
4243 | rc = RTSemMutexRelease(pIntNet->hMtxCreateOpenDestroy);
|
---|
4244 | }
|
---|
4245 |
|
---|
4246 | intnetR0IfRelease(pIf, pSession);
|
---|
4247 | LogFlow(("IntNetR0IfGetBufferPtrs: returns %Rrc *ppRing3Buf=%p *ppRing0Buf=%p\n",
|
---|
4248 | rc, ppRing3Buf ? *ppRing3Buf : NIL_RTR3PTR, ppRing0Buf ? *ppRing0Buf : NIL_RTR0PTR));
|
---|
4249 | return rc;
|
---|
4250 | }
|
---|
4251 |
|
---|
4252 |
|
---|
4253 | /**
|
---|
4254 | * VMMR0 request wrapper for IntNetR0IfGetBufferPtrs.
|
---|
4255 | *
|
---|
4256 | * @returns see IntNetR0IfGetRing3Buffer.
|
---|
4257 | * @param pSession The caller's session.
|
---|
4258 | * @param pReq The request packet.
|
---|
4259 | */
|
---|
4260 | INTNETR0DECL(int) IntNetR0IfGetBufferPtrsReq(PSUPDRVSESSION pSession, PINTNETIFGETBUFFERPTRSREQ pReq)
|
---|
4261 | {
|
---|
4262 | if (RT_UNLIKELY(pReq->Hdr.cbReq != sizeof(*pReq)))
|
---|
4263 | return VERR_INVALID_PARAMETER;
|
---|
4264 | return IntNetR0IfGetBufferPtrs(pReq->hIf, pSession, &pReq->pRing3Buf, &pReq->pRing0Buf);
|
---|
4265 | }
|
---|
4266 |
|
---|
4267 |
|
---|
4268 | #if 0
|
---|
4269 | /**
|
---|
4270 | * Gets the physical addresses of the default interface buffer.
|
---|
4271 | *
|
---|
4272 | * @returns VBox status code.
|
---|
4273 | * @param hIF The interface handle.
|
---|
4274 | * @param paPages Where to store the addresses. (The reserved fields will be set to zero.)
|
---|
4275 | * @param cPages
|
---|
4276 | */
|
---|
4277 | INTNETR0DECL(int) IntNetR0IfGetPhysBuffer(INTNETIFHANDLE hIf, PSUPPAGE paPages, unsigned cPages)
|
---|
4278 | {
|
---|
4279 | /*
|
---|
4280 | * Validate input.
|
---|
4281 | */
|
---|
4282 | PINTNET pIntNet = g_pIntNet;
|
---|
4283 | AssertPtrReturn(pIntNet, VERR_INVALID_PARAMETER);
|
---|
4284 | AssertReturn(pIntNet->u32Magic, VERR_INVALID_MAGIC);
|
---|
4285 |
|
---|
4286 | AssertPtrReturn(paPages, VERR_INVALID_PARAMETER);
|
---|
4287 | AssertPtrReturn((uint8_t *)&paPages[cPages] - 1, VERR_INVALID_PARAMETER);
|
---|
4288 | PINTNETIF pIf = (PINTNETIF)RTHandleTableLookupWithCtx(pIntNet->hHtIfs, hIf, pSession);
|
---|
4289 | if (!pIf)
|
---|
4290 | return VERR_INVALID_HANDLE;
|
---|
4291 |
|
---|
4292 | /*
|
---|
4293 | * Grab the lock and get the data.
|
---|
4294 | * ASSUMES that the handle isn't closed while we're here.
|
---|
4295 | */
|
---|
4296 | int rc = RTSemFastMutexRequest(pIf->pNetwork->FastMutex);
|
---|
4297 | if (RT_SUCCESS(rc))
|
---|
4298 | {
|
---|
4299 | /** @todo make a SUPR0 api for obtaining the array. SUPR0/IPRT is keeping track of everything, there
|
---|
4300 | * is no need for any extra bookkeeping here.. */
|
---|
4301 |
|
---|
4302 | rc = RTSemFastMutexRelease(pIf->pNetwork->FastMutex);
|
---|
4303 | }
|
---|
4304 | intnetR0IfRelease(pIf, pSession);
|
---|
4305 | return VERR_NOT_IMPLEMENTED;
|
---|
4306 | }
|
---|
4307 | #endif
|
---|
4308 |
|
---|
4309 |
|
---|
4310 | /**
|
---|
4311 | * Sets the promiscuous mode property of an interface.
|
---|
4312 | *
|
---|
4313 | * @returns VBox status code.
|
---|
4314 | * @param hIf The interface handle.
|
---|
4315 | * @param pSession The caller's session.
|
---|
4316 | * @param fPromiscuous Set if the interface should be in promiscuous mode, clear if not.
|
---|
4317 | */
|
---|
4318 | INTNETR0DECL(int) IntNetR0IfSetPromiscuousMode(INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, bool fPromiscuous)
|
---|
4319 | {
|
---|
4320 | LogFlow(("IntNetR0IfSetPromiscuousMode: hIf=%RX32 fPromiscuous=%d\n", hIf, fPromiscuous));
|
---|
4321 |
|
---|
4322 | /*
|
---|
4323 | * Validate & translate input.
|
---|
4324 | */
|
---|
4325 | PINTNET pIntNet = g_pIntNet;
|
---|
4326 | AssertPtrReturn(pIntNet, VERR_INVALID_PARAMETER);
|
---|
4327 | AssertReturn(pIntNet->u32Magic, VERR_INVALID_MAGIC);
|
---|
4328 |
|
---|
4329 | PINTNETIF pIf = (PINTNETIF)RTHandleTableLookupWithCtx(pIntNet->hHtIfs, hIf, pSession);
|
---|
4330 | if (!pIf)
|
---|
4331 | {
|
---|
4332 | Log(("IntNetR0IfSetPromiscuousMode: returns VERR_INVALID_HANDLE\n"));
|
---|
4333 | return VERR_INVALID_HANDLE;
|
---|
4334 | }
|
---|
4335 |
|
---|
4336 | /*
|
---|
4337 | * Get the network, take the address spinlock, and make the change.
|
---|
4338 | * Paranoia^2: Mark ourselves busy to prevent anything from being destroyed.
|
---|
4339 | */
|
---|
4340 | int rc = VINF_SUCCESS;
|
---|
4341 | intnetR0BusyIncIf(pIf);
|
---|
4342 | PINTNETNETWORK pNetwork = pIf->pNetwork;
|
---|
4343 | if (pNetwork)
|
---|
4344 | {
|
---|
4345 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
4346 |
|
---|
4347 | if (pIf->fPromiscuousReal != fPromiscuous)
|
---|
4348 | {
|
---|
4349 | const bool fPromiscuousEff = fPromiscuous
|
---|
4350 | && (pIf->fOpenFlags & INTNET_OPEN_FLAGS_IF_PROMISC_ALLOW)
|
---|
4351 | && (pNetwork->fFlags & INTNET_OPEN_FLAGS_PROMISC_ALLOW_CLIENTS);
|
---|
4352 | Log(("IntNetR0IfSetPromiscuousMode: hIf=%RX32: Changed from %d -> %d (%d)\n",
|
---|
4353 | hIf, !fPromiscuous, !!fPromiscuous, fPromiscuousEff));
|
---|
4354 |
|
---|
4355 | pIf->fPromiscuousReal = fPromiscuous;
|
---|
4356 |
|
---|
4357 | PINTNETMACTABENTRY pEntry = intnetR0NetworkFindMacAddrEntry(pNetwork, pIf); Assert(pEntry);
|
---|
4358 | if (RT_LIKELY(pEntry))
|
---|
4359 | {
|
---|
4360 | if (pEntry->fPromiscuousEff)
|
---|
4361 | {
|
---|
4362 | pNetwork->MacTab.cPromiscuousEntries--;
|
---|
4363 | if (!pEntry->fPromiscuousSeeTrunk)
|
---|
4364 | pNetwork->MacTab.cPromiscuousNoTrunkEntries--;
|
---|
4365 | Assert(pNetwork->MacTab.cPromiscuousEntries < pNetwork->MacTab.cEntries);
|
---|
4366 | Assert(pNetwork->MacTab.cPromiscuousNoTrunkEntries < pNetwork->MacTab.cEntries);
|
---|
4367 | }
|
---|
4368 |
|
---|
4369 | pEntry->fPromiscuousEff = fPromiscuousEff;
|
---|
4370 | pEntry->fPromiscuousSeeTrunk = fPromiscuousEff
|
---|
4371 | && (pIf->fOpenFlags & INTNET_OPEN_FLAGS_IF_PROMISC_SEE_TRUNK);
|
---|
4372 |
|
---|
4373 | if (pEntry->fPromiscuousEff)
|
---|
4374 | {
|
---|
4375 | pNetwork->MacTab.cPromiscuousEntries++;
|
---|
4376 | if (!pEntry->fPromiscuousSeeTrunk)
|
---|
4377 | pNetwork->MacTab.cPromiscuousNoTrunkEntries++;
|
---|
4378 | }
|
---|
4379 | Assert(pNetwork->MacTab.cPromiscuousEntries <= pNetwork->MacTab.cEntries);
|
---|
4380 | Assert(pNetwork->MacTab.cPromiscuousNoTrunkEntries <= pNetwork->MacTab.cEntries);
|
---|
4381 | }
|
---|
4382 | }
|
---|
4383 |
|
---|
4384 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
4385 | }
|
---|
4386 | else
|
---|
4387 | rc = VERR_WRONG_ORDER;
|
---|
4388 |
|
---|
4389 | intnetR0BusyDecIf(pIf);
|
---|
4390 | intnetR0IfRelease(pIf, pSession);
|
---|
4391 | return rc;
|
---|
4392 | }
|
---|
4393 |
|
---|
4394 |
|
---|
4395 | /**
|
---|
4396 | * VMMR0 request wrapper for IntNetR0IfSetPromiscuousMode.
|
---|
4397 | *
|
---|
4398 | * @returns see IntNetR0IfSetPromiscuousMode.
|
---|
4399 | * @param pSession The caller's session.
|
---|
4400 | * @param pReq The request packet.
|
---|
4401 | */
|
---|
4402 | INTNETR0DECL(int) IntNetR0IfSetPromiscuousModeReq(PSUPDRVSESSION pSession, PINTNETIFSETPROMISCUOUSMODEREQ pReq)
|
---|
4403 | {
|
---|
4404 | if (RT_UNLIKELY(pReq->Hdr.cbReq != sizeof(*pReq)))
|
---|
4405 | return VERR_INVALID_PARAMETER;
|
---|
4406 | return IntNetR0IfSetPromiscuousMode(pReq->hIf, pSession, pReq->fPromiscuous);
|
---|
4407 | }
|
---|
4408 |
|
---|
4409 |
|
---|
4410 | /**
|
---|
4411 | * Sets the MAC address of an interface.
|
---|
4412 | *
|
---|
4413 | * @returns VBox status code.
|
---|
4414 | * @param hIf The interface handle.
|
---|
4415 | * @param pSession The caller's session.
|
---|
4416 | * @param pMAC The new MAC address.
|
---|
4417 | */
|
---|
4418 | INTNETR0DECL(int) IntNetR0IfSetMacAddress(INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, PCRTMAC pMac)
|
---|
4419 | {
|
---|
4420 | LogFlow(("IntNetR0IfSetMacAddress: hIf=%RX32 pMac=%p:{%.6Rhxs}\n", hIf, pMac, pMac));
|
---|
4421 |
|
---|
4422 | /*
|
---|
4423 | * Validate & translate input.
|
---|
4424 | */
|
---|
4425 | PINTNET pIntNet = g_pIntNet;
|
---|
4426 | AssertPtrReturn(pIntNet, VERR_INVALID_PARAMETER);
|
---|
4427 | AssertReturn(pIntNet->u32Magic, VERR_INVALID_MAGIC);
|
---|
4428 |
|
---|
4429 | AssertPtrReturn(pMac, VERR_INVALID_PARAMETER);
|
---|
4430 | PINTNETIF pIf = (PINTNETIF)RTHandleTableLookupWithCtx(pIntNet->hHtIfs, hIf, pSession);
|
---|
4431 | if (!pIf)
|
---|
4432 | {
|
---|
4433 | Log(("IntNetR0IfSetMacAddress: returns VERR_INVALID_HANDLE\n"));
|
---|
4434 | return VERR_INVALID_HANDLE;
|
---|
4435 | }
|
---|
4436 |
|
---|
4437 | /*
|
---|
4438 | * Get the network, take the address spinlock, and make the change.
|
---|
4439 | * Paranoia^2: Mark ourselves busy to prevent anything from being destroyed.
|
---|
4440 | */
|
---|
4441 | int rc = VINF_SUCCESS;
|
---|
4442 | intnetR0BusyIncIf(pIf);
|
---|
4443 | PINTNETNETWORK pNetwork = pIf->pNetwork;
|
---|
4444 | if (pNetwork)
|
---|
4445 | {
|
---|
4446 | PINTNETTRUNKIF pTrunk = NULL;
|
---|
4447 |
|
---|
4448 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
4449 |
|
---|
4450 | if (memcmp(&pIf->MacAddr, pMac, sizeof(pIf->MacAddr)))
|
---|
4451 | {
|
---|
4452 | Log(("IntNetR0IfSetMacAddress: hIf=%RX32: Changed from %.6Rhxs -> %.6Rhxs\n",
|
---|
4453 | hIf, &pIf->MacAddr, pMac));
|
---|
4454 |
|
---|
4455 | /* Update the two copies. */
|
---|
4456 | PINTNETMACTABENTRY pEntry = intnetR0NetworkFindMacAddrEntry(pNetwork, pIf); Assert(pEntry);
|
---|
4457 | if (RT_LIKELY(pEntry))
|
---|
4458 | pEntry->MacAddr = *pMac;
|
---|
4459 | pIf->MacAddr = *pMac;
|
---|
4460 | pIf->fMacSet = true;
|
---|
4461 |
|
---|
4462 | /* Grab a busy reference to the trunk so we release the lock before notifying it. */
|
---|
4463 | pTrunk = pNetwork->MacTab.pTrunk;
|
---|
4464 | if (pTrunk)
|
---|
4465 | intnetR0BusyIncTrunk(pTrunk);
|
---|
4466 | }
|
---|
4467 |
|
---|
4468 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
4469 |
|
---|
4470 | if (pTrunk)
|
---|
4471 | {
|
---|
4472 | Log(("IntNetR0IfSetMacAddress: pfnNotifyMacAddress hIf=%RX32\n", hIf));
|
---|
4473 | PINTNETTRUNKIFPORT pIfPort = pTrunk->pIfPort;
|
---|
4474 | if (pIfPort)
|
---|
4475 | pIfPort->pfnNotifyMacAddress(pIfPort, pIf->pvIfData, pMac);
|
---|
4476 | intnetR0BusyDecTrunk(pTrunk);
|
---|
4477 | }
|
---|
4478 | }
|
---|
4479 | else
|
---|
4480 | rc = VERR_WRONG_ORDER;
|
---|
4481 |
|
---|
4482 | intnetR0BusyDecIf(pIf);
|
---|
4483 | intnetR0IfRelease(pIf, pSession);
|
---|
4484 | return rc;
|
---|
4485 | }
|
---|
4486 |
|
---|
4487 |
|
---|
4488 | /**
|
---|
4489 | * VMMR0 request wrapper for IntNetR0IfSetMacAddress.
|
---|
4490 | *
|
---|
4491 | * @returns see IntNetR0IfSetMacAddress.
|
---|
4492 | * @param pSession The caller's session.
|
---|
4493 | * @param pReq The request packet.
|
---|
4494 | */
|
---|
4495 | INTNETR0DECL(int) IntNetR0IfSetMacAddressReq(PSUPDRVSESSION pSession, PINTNETIFSETMACADDRESSREQ pReq)
|
---|
4496 | {
|
---|
4497 | if (RT_UNLIKELY(pReq->Hdr.cbReq != sizeof(*pReq)))
|
---|
4498 | return VERR_INVALID_PARAMETER;
|
---|
4499 | return IntNetR0IfSetMacAddress(pReq->hIf, pSession, &pReq->Mac);
|
---|
4500 | }
|
---|
4501 |
|
---|
4502 |
|
---|
4503 | /**
|
---|
4504 | * Worker for intnetR0IfSetActive and intnetR0IfDestruct.
|
---|
4505 | *
|
---|
4506 | * This function will update the active interface count on the network and
|
---|
4507 | * activate or deactivate the trunk connection if necessary.
|
---|
4508 | *
|
---|
4509 | * The call must own the giant lock (we cannot take it here).
|
---|
4510 | *
|
---|
4511 | * @returns VBox status code.
|
---|
4512 | * @param pNetwork The network.
|
---|
4513 | * @param fIf The interface.
|
---|
4514 | * @param fActive What to do.
|
---|
4515 | */
|
---|
4516 | static int intnetR0NetworkSetIfActive(PINTNETNETWORK pNetwork, PINTNETIF pIf, bool fActive)
|
---|
4517 | {
|
---|
4518 | /* quick sanity check */
|
---|
4519 | AssertPtr(pNetwork);
|
---|
4520 | AssertPtr(pIf);
|
---|
4521 |
|
---|
4522 | /*
|
---|
4523 | * The address spinlock of the network protects the variables, while the
|
---|
4524 | * big lock protects the calling of pfnSetState. Grab both lock at once
|
---|
4525 | * to save us the extra hassle.
|
---|
4526 | */
|
---|
4527 | PINTNETTRUNKIF pTrunk = NULL;
|
---|
4528 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
4529 |
|
---|
4530 | /*
|
---|
4531 | * Do the update.
|
---|
4532 | */
|
---|
4533 | if (pIf->fActive != fActive)
|
---|
4534 | {
|
---|
4535 | PINTNETMACTABENTRY pEntry = intnetR0NetworkFindMacAddrEntry(pNetwork, pIf); Assert(pEntry);
|
---|
4536 | if (RT_LIKELY(pEntry))
|
---|
4537 | {
|
---|
4538 | pEntry->fActive = fActive;
|
---|
4539 | pIf->fActive = fActive;
|
---|
4540 |
|
---|
4541 | if (fActive)
|
---|
4542 | {
|
---|
4543 | pNetwork->cActiveIFs++;
|
---|
4544 | if (pNetwork->cActiveIFs == 1)
|
---|
4545 | {
|
---|
4546 | pTrunk = pNetwork->MacTab.pTrunk;
|
---|
4547 | if (pTrunk)
|
---|
4548 | {
|
---|
4549 | pNetwork->MacTab.fHostActive = RT_BOOL(pNetwork->fFlags & INTNET_OPEN_FLAGS_TRUNK_HOST_ENABLED);
|
---|
4550 | pNetwork->MacTab.fWireActive = RT_BOOL(pNetwork->fFlags & INTNET_OPEN_FLAGS_TRUNK_WIRE_ENABLED);
|
---|
4551 | }
|
---|
4552 | }
|
---|
4553 | }
|
---|
4554 | else
|
---|
4555 | {
|
---|
4556 | pNetwork->cActiveIFs--;
|
---|
4557 | if (pNetwork->cActiveIFs == 0)
|
---|
4558 | {
|
---|
4559 | pTrunk = pNetwork->MacTab.pTrunk;
|
---|
4560 | pNetwork->MacTab.fHostActive = false;
|
---|
4561 | pNetwork->MacTab.fWireActive = false;
|
---|
4562 | }
|
---|
4563 | }
|
---|
4564 | }
|
---|
4565 | }
|
---|
4566 |
|
---|
4567 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
4568 |
|
---|
4569 | /*
|
---|
4570 | * Tell the trunk if necessary.
|
---|
4571 | * The wait for !busy is for the Solaris streams trunk driver (mostly).
|
---|
4572 | */
|
---|
4573 | if (pTrunk && pTrunk->pIfPort)
|
---|
4574 | {
|
---|
4575 | if (!fActive)
|
---|
4576 | intnetR0BusyWait(pNetwork, &pTrunk->cBusy);
|
---|
4577 |
|
---|
4578 | pTrunk->pIfPort->pfnSetState(pTrunk->pIfPort, fActive ? INTNETTRUNKIFSTATE_ACTIVE : INTNETTRUNKIFSTATE_INACTIVE);
|
---|
4579 | }
|
---|
4580 |
|
---|
4581 | return VINF_SUCCESS;
|
---|
4582 | }
|
---|
4583 |
|
---|
4584 |
|
---|
4585 | /**
|
---|
4586 | * Sets the active property of an interface.
|
---|
4587 | *
|
---|
4588 | * @returns VBox status code.
|
---|
4589 | * @param hIf The interface handle.
|
---|
4590 | * @param pSession The caller's session.
|
---|
4591 | * @param fActive The new state.
|
---|
4592 | */
|
---|
4593 | INTNETR0DECL(int) IntNetR0IfSetActive(INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, bool fActive)
|
---|
4594 | {
|
---|
4595 | LogFlow(("IntNetR0IfSetActive: hIf=%RX32 fActive=%RTbool\n", hIf, fActive));
|
---|
4596 |
|
---|
4597 | /*
|
---|
4598 | * Validate & translate input.
|
---|
4599 | */
|
---|
4600 | PINTNET pIntNet = g_pIntNet;
|
---|
4601 | AssertPtrReturn(pIntNet, VERR_INVALID_PARAMETER);
|
---|
4602 | AssertReturn(pIntNet->u32Magic, VERR_INVALID_MAGIC);
|
---|
4603 |
|
---|
4604 | PINTNETIF pIf = (PINTNETIF)RTHandleTableLookupWithCtx(pIntNet->hHtIfs, hIf, pSession);
|
---|
4605 | if (!pIf)
|
---|
4606 | {
|
---|
4607 | Log(("IntNetR0IfSetActive: returns VERR_INVALID_HANDLE\n"));
|
---|
4608 | return VERR_INVALID_HANDLE;
|
---|
4609 | }
|
---|
4610 |
|
---|
4611 | /*
|
---|
4612 | * Hand it to the network since it might involve the trunk and things are
|
---|
4613 | * tricky there wrt to locking order.
|
---|
4614 | *
|
---|
4615 | * 1. We take the giant lock here. This makes sure nobody is re-enabling
|
---|
4616 | * the network while we're pausing it and vice versa. This also enables
|
---|
4617 | * us to wait for the network to become idle before telling the trunk.
|
---|
4618 | * (Important on Solaris.)
|
---|
4619 | *
|
---|
4620 | * 2. For paranoid reasons, we grab a busy reference to the calling
|
---|
4621 | * interface. This is totally unnecessary but should hurt (when done
|
---|
4622 | * after grabbing the giant lock).
|
---|
4623 | */
|
---|
4624 | int rc = RTSemMutexRequest(pIntNet->hMtxCreateOpenDestroy, RT_INDEFINITE_WAIT);
|
---|
4625 | if (RT_SUCCESS(rc))
|
---|
4626 | {
|
---|
4627 | intnetR0BusyIncIf(pIf);
|
---|
4628 |
|
---|
4629 | PINTNETNETWORK pNetwork = pIf->pNetwork;
|
---|
4630 | if (pNetwork)
|
---|
4631 | rc = intnetR0NetworkSetIfActive(pNetwork, pIf, fActive);
|
---|
4632 | else
|
---|
4633 | rc = VERR_WRONG_ORDER;
|
---|
4634 |
|
---|
4635 | intnetR0BusyDecIf(pIf);
|
---|
4636 | RTSemMutexRelease(pIntNet->hMtxCreateOpenDestroy);
|
---|
4637 | }
|
---|
4638 |
|
---|
4639 | intnetR0IfRelease(pIf, pSession);
|
---|
4640 | LogFlow(("IntNetR0IfSetActive: returns %Rrc\n", rc));
|
---|
4641 | return rc;
|
---|
4642 | }
|
---|
4643 |
|
---|
4644 |
|
---|
4645 | /**
|
---|
4646 | * VMMR0 request wrapper for IntNetR0IfSetActive.
|
---|
4647 | *
|
---|
4648 | * @returns see IntNetR0IfSetActive.
|
---|
4649 | * @param pIntNet The internal networking instance.
|
---|
4650 | * @param pSession The caller's session.
|
---|
4651 | * @param pReq The request packet.
|
---|
4652 | */
|
---|
4653 | INTNETR0DECL(int) IntNetR0IfSetActiveReq(PSUPDRVSESSION pSession, PINTNETIFSETACTIVEREQ pReq)
|
---|
4654 | {
|
---|
4655 | if (RT_UNLIKELY(pReq->Hdr.cbReq != sizeof(*pReq)))
|
---|
4656 | return VERR_INVALID_PARAMETER;
|
---|
4657 | return IntNetR0IfSetActive(pReq->hIf, pSession, pReq->fActive);
|
---|
4658 | }
|
---|
4659 |
|
---|
4660 |
|
---|
4661 | /**
|
---|
4662 | * Wait for the interface to get signaled.
|
---|
4663 | * The interface will be signaled when is put into the receive buffer.
|
---|
4664 | *
|
---|
4665 | * @returns VBox status code.
|
---|
4666 | * @param hIf The interface handle.
|
---|
4667 | * @param pSession The caller's session.
|
---|
4668 | * @param cMillies Number of milliseconds to wait. RT_INDEFINITE_WAIT should be
|
---|
4669 | * used if indefinite wait is desired.
|
---|
4670 | */
|
---|
4671 | INTNETR0DECL(int) IntNetR0IfWait(INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, uint32_t cMillies)
|
---|
4672 | {
|
---|
4673 | Log4(("IntNetR0IfWait: hIf=%RX32 cMillies=%u\n", hIf, cMillies));
|
---|
4674 |
|
---|
4675 | /*
|
---|
4676 | * Get and validate essential handles.
|
---|
4677 | */
|
---|
4678 | PINTNET pIntNet = g_pIntNet;
|
---|
4679 | AssertPtrReturn(pIntNet, VERR_INVALID_PARAMETER);
|
---|
4680 | AssertReturn(pIntNet->u32Magic, VERR_INVALID_MAGIC);
|
---|
4681 |
|
---|
4682 | PINTNETIF pIf = (PINTNETIF)RTHandleTableLookupWithCtx(pIntNet->hHtIfs, hIf, pSession);
|
---|
4683 | if (!pIf)
|
---|
4684 | {
|
---|
4685 | Log(("IntNetR0IfWait: returns VERR_INVALID_HANDLE\n"));
|
---|
4686 | return VERR_INVALID_HANDLE;
|
---|
4687 | }
|
---|
4688 |
|
---|
4689 | #if defined(VBOX_WITH_INTNET_SERVICE_IN_R3) && defined(IN_RING3)
|
---|
4690 | AssertReleaseFailed(); /* Should never be called. */
|
---|
4691 | RT_NOREF(cMillies);
|
---|
4692 | return VERR_NOT_SUPPORTED;
|
---|
4693 | #else
|
---|
4694 | const RTSEMEVENT hRecvEvent = pIf->hRecvEvent;
|
---|
4695 | const bool fNoMoreWaits = ASMAtomicUoReadBool(&pIf->fNoMoreWaits);
|
---|
4696 | RTNATIVETHREAD hDtorThrd;
|
---|
4697 | ASMAtomicReadHandle(&pIf->hDestructorThread, &hDtorThrd);
|
---|
4698 | if (hDtorThrd != NIL_RTNATIVETHREAD)
|
---|
4699 | {
|
---|
4700 | /* See IntNetR0IfAbortWait for an explanation of hDestructorThread. */
|
---|
4701 | Log(("IntNetR0IfWait: returns VERR_SEM_DESTROYED\n"));
|
---|
4702 | return VERR_SEM_DESTROYED;
|
---|
4703 | }
|
---|
4704 |
|
---|
4705 | /* Check whether further waits have been barred by IntNetR0IfAbortWait. */
|
---|
4706 | int rc;
|
---|
4707 | if ( !fNoMoreWaits
|
---|
4708 | && hRecvEvent != NIL_RTSEMEVENT)
|
---|
4709 | {
|
---|
4710 | /*
|
---|
4711 | * It is tempting to check if there is data to be read here,
|
---|
4712 | * but the problem with such an approach is that it will cause
|
---|
4713 | * one unnecessary supervisor->user->supervisor trip. There is
|
---|
4714 | * already a slight risk for such, so no need to increase it.
|
---|
4715 | */
|
---|
4716 |
|
---|
4717 | /*
|
---|
4718 | * Increment the number of waiters before starting the wait.
|
---|
4719 | * Upon wakeup we must assert reality, checking that we're not
|
---|
4720 | * already destroyed or in the process of being destroyed. This
|
---|
4721 | * code must be aligned with the waiting code in intnetR0IfDestruct.
|
---|
4722 | */
|
---|
4723 | ASMAtomicIncU32(&pIf->cSleepers);
|
---|
4724 | rc = RTSemEventWaitNoResume(hRecvEvent, cMillies);
|
---|
4725 | if (pIf->hRecvEvent == hRecvEvent)
|
---|
4726 | {
|
---|
4727 | ASMAtomicDecU32(&pIf->cSleepers);
|
---|
4728 | ASMAtomicReadHandle(&pIf->hDestructorThread, &hDtorThrd);
|
---|
4729 | if (hDtorThrd == NIL_RTNATIVETHREAD)
|
---|
4730 | {
|
---|
4731 | if (intnetR0IfRelease(pIf, pSession))
|
---|
4732 | rc = VERR_SEM_DESTROYED;
|
---|
4733 | }
|
---|
4734 | else
|
---|
4735 | rc = VERR_SEM_DESTROYED;
|
---|
4736 | }
|
---|
4737 | else
|
---|
4738 | rc = VERR_SEM_DESTROYED;
|
---|
4739 | }
|
---|
4740 | else
|
---|
4741 | {
|
---|
4742 | rc = VERR_SEM_DESTROYED;
|
---|
4743 | intnetR0IfRelease(pIf, pSession);
|
---|
4744 | }
|
---|
4745 |
|
---|
4746 | Log4(("IntNetR0IfWait: returns %Rrc\n", rc));
|
---|
4747 | return rc;
|
---|
4748 | #endif
|
---|
4749 | }
|
---|
4750 |
|
---|
4751 |
|
---|
4752 | /**
|
---|
4753 | * VMMR0 request wrapper for IntNetR0IfWait.
|
---|
4754 | *
|
---|
4755 | * @returns see IntNetR0IfWait.
|
---|
4756 | * @param pSession The caller's session.
|
---|
4757 | * @param pReq The request packet.
|
---|
4758 | */
|
---|
4759 | INTNETR0DECL(int) IntNetR0IfWaitReq(PSUPDRVSESSION pSession, PINTNETIFWAITREQ pReq)
|
---|
4760 | {
|
---|
4761 | if (RT_UNLIKELY(pReq->Hdr.cbReq != sizeof(*pReq)))
|
---|
4762 | return VERR_INVALID_PARAMETER;
|
---|
4763 | return IntNetR0IfWait(pReq->hIf, pSession, pReq->cMillies);
|
---|
4764 | }
|
---|
4765 |
|
---|
4766 |
|
---|
4767 | /**
|
---|
4768 | * Wake up any threads waiting on the interface.
|
---|
4769 | *
|
---|
4770 | * @returns VBox status code.
|
---|
4771 | * @param hIf The interface handle.
|
---|
4772 | * @param pSession The caller's session.
|
---|
4773 | * @param fNoMoreWaits When set, no more waits are permitted.
|
---|
4774 | */
|
---|
4775 | INTNETR0DECL(int) IntNetR0IfAbortWait(INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, bool fNoMoreWaits)
|
---|
4776 | {
|
---|
4777 | Log4(("IntNetR0IfAbortWait: hIf=%RX32 fNoMoreWaits=%RTbool\n", hIf, fNoMoreWaits));
|
---|
4778 |
|
---|
4779 | /*
|
---|
4780 | * Get and validate essential handles.
|
---|
4781 | */
|
---|
4782 | PINTNET pIntNet = g_pIntNet;
|
---|
4783 | AssertPtrReturn(pIntNet, VERR_INVALID_PARAMETER);
|
---|
4784 | AssertReturn(pIntNet->u32Magic, VERR_INVALID_MAGIC);
|
---|
4785 |
|
---|
4786 | PINTNETIF pIf = (PINTNETIF)RTHandleTableLookupWithCtx(pIntNet->hHtIfs, hIf, pSession);
|
---|
4787 | if (!pIf)
|
---|
4788 | {
|
---|
4789 | Log(("IntNetR0IfAbortWait: returns VERR_INVALID_HANDLE\n"));
|
---|
4790 | return VERR_INVALID_HANDLE;
|
---|
4791 | }
|
---|
4792 |
|
---|
4793 | #if defined(VBOX_WITH_INTNET_SERVICE_IN_R3) && defined(IN_RING3)
|
---|
4794 | AssertReleaseFailed();
|
---|
4795 | RT_NOREF(fNoMoreWaits);
|
---|
4796 | return VERR_NOT_SUPPORTED;
|
---|
4797 | #else
|
---|
4798 | const RTSEMEVENT hRecvEvent = pIf->hRecvEvent;
|
---|
4799 | RTNATIVETHREAD hDtorThrd;
|
---|
4800 | ASMAtomicReadHandle(&pIf->hDestructorThread, &hDtorThrd);
|
---|
4801 | if (hDtorThrd != NIL_RTNATIVETHREAD)
|
---|
4802 | {
|
---|
4803 | /* This can only happen if we for some reason race SUPDRVSESSION cleanup,
|
---|
4804 | i.e. the object count is set to zero without yet having removed it from
|
---|
4805 | the object table, so we got a spurious "reference". We must drop that
|
---|
4806 | reference and let the destructor get on with its work. (Not entirely sure
|
---|
4807 | if this is practically possible on any of the platforms, i.e. whether it's
|
---|
4808 | we can actually close a SUPDrv handle/descriptor with active threads still
|
---|
4809 | in NtDeviceIoControlFile/ioctl, but better safe than sorry.) */
|
---|
4810 | Log(("IntNetR0IfAbortWait: returns VERR_SEM_DESTROYED\n"));
|
---|
4811 | return VERR_SEM_DESTROYED;
|
---|
4812 | }
|
---|
4813 |
|
---|
4814 | /* a bit of paranoia */
|
---|
4815 | int rc = VINF_SUCCESS;
|
---|
4816 | if (hRecvEvent != NIL_RTSEMEVENT)
|
---|
4817 | {
|
---|
4818 | /*
|
---|
4819 | * Set fNoMoreWaits if requested to do so and then wake up all the sleeping
|
---|
4820 | * threads (usually just one). We leave the semaphore in the signalled
|
---|
4821 | * state so the next caller will return immediately.
|
---|
4822 | */
|
---|
4823 | if (fNoMoreWaits)
|
---|
4824 | ASMAtomicWriteBool(&pIf->fNoMoreWaits, true);
|
---|
4825 |
|
---|
4826 | uint32_t cSleepers = ASMAtomicReadU32(&pIf->cSleepers) + 1;
|
---|
4827 | while (cSleepers-- > 0)
|
---|
4828 | {
|
---|
4829 | int rc2 = RTSemEventSignal(pIf->hRecvEvent);
|
---|
4830 | AssertRC(rc2);
|
---|
4831 | }
|
---|
4832 | }
|
---|
4833 | else
|
---|
4834 | rc = VERR_SEM_DESTROYED;
|
---|
4835 |
|
---|
4836 | intnetR0IfRelease(pIf, pSession);
|
---|
4837 |
|
---|
4838 | Log4(("IntNetR0IfWait: returns %Rrc\n", VINF_SUCCESS));
|
---|
4839 | return VINF_SUCCESS;
|
---|
4840 | #endif
|
---|
4841 | }
|
---|
4842 |
|
---|
4843 |
|
---|
4844 | /**
|
---|
4845 | * VMMR0 request wrapper for IntNetR0IfAbortWait.
|
---|
4846 | *
|
---|
4847 | * @returns see IntNetR0IfWait.
|
---|
4848 | * @param pSession The caller's session.
|
---|
4849 | * @param pReq The request packet.
|
---|
4850 | */
|
---|
4851 | INTNETR0DECL(int) IntNetR0IfAbortWaitReq(PSUPDRVSESSION pSession, PINTNETIFABORTWAITREQ pReq)
|
---|
4852 | {
|
---|
4853 | if (RT_UNLIKELY(pReq->Hdr.cbReq != sizeof(*pReq)))
|
---|
4854 | return VERR_INVALID_PARAMETER;
|
---|
4855 | return IntNetR0IfAbortWait(pReq->hIf, pSession, pReq->fNoMoreWaits);
|
---|
4856 | }
|
---|
4857 |
|
---|
4858 |
|
---|
4859 | /**
|
---|
4860 | * Close an interface.
|
---|
4861 | *
|
---|
4862 | * @returns VBox status code.
|
---|
4863 | * @param pIntNet The instance handle.
|
---|
4864 | * @param hIf The interface handle.
|
---|
4865 | * @param pSession The caller's session.
|
---|
4866 | */
|
---|
4867 | INTNETR0DECL(int) IntNetR0IfClose(INTNETIFHANDLE hIf, PSUPDRVSESSION pSession)
|
---|
4868 | {
|
---|
4869 | LogFlow(("IntNetR0IfClose: hIf=%RX32\n", hIf));
|
---|
4870 |
|
---|
4871 | /*
|
---|
4872 | * Validate and free the handle.
|
---|
4873 | */
|
---|
4874 | PINTNET pIntNet = g_pIntNet;
|
---|
4875 | AssertPtrReturn(pIntNet, VERR_INVALID_PARAMETER);
|
---|
4876 | AssertReturn(pIntNet->u32Magic, VERR_INVALID_MAGIC);
|
---|
4877 |
|
---|
4878 | PINTNETIF pIf = (PINTNETIF)RTHandleTableFreeWithCtx(pIntNet->hHtIfs, hIf, pSession);
|
---|
4879 | if (!pIf)
|
---|
4880 | return VERR_INVALID_HANDLE;
|
---|
4881 |
|
---|
4882 | /* Mark the handle as freed so intnetR0IfDestruct won't free it again. */
|
---|
4883 | ASMAtomicWriteU32(&pIf->hIf, INTNET_HANDLE_INVALID);
|
---|
4884 |
|
---|
4885 | #if !defined(VBOX_WITH_INTNET_SERVICE_IN_R3) || !defined(IN_RING3)
|
---|
4886 | /*
|
---|
4887 | * Signal the event semaphore to wake up any threads in IntNetR0IfWait
|
---|
4888 | * and give them a moment to get out and release the interface.
|
---|
4889 | */
|
---|
4890 | uint32_t i = pIf->cSleepers;
|
---|
4891 | while (i-- > 0)
|
---|
4892 | {
|
---|
4893 | RTSemEventSignal(pIf->hRecvEvent);
|
---|
4894 | RTThreadYield();
|
---|
4895 | }
|
---|
4896 | RTSemEventSignal(pIf->hRecvEvent);
|
---|
4897 | #endif
|
---|
4898 |
|
---|
4899 | /*
|
---|
4900 | * Release the references to the interface object (handle + free lookup).
|
---|
4901 | */
|
---|
4902 | void *pvObj = pIf->pvObj;
|
---|
4903 | intnetR0IfRelease(pIf, pSession); /* (RTHandleTableFreeWithCtx) */
|
---|
4904 |
|
---|
4905 | int rc = SUPR0ObjRelease(pvObj, pSession);
|
---|
4906 | LogFlow(("IntNetR0IfClose: returns %Rrc\n", rc));
|
---|
4907 | return rc;
|
---|
4908 | }
|
---|
4909 |
|
---|
4910 |
|
---|
4911 | /**
|
---|
4912 | * VMMR0 request wrapper for IntNetR0IfCloseReq.
|
---|
4913 | *
|
---|
4914 | * @returns see IntNetR0IfClose.
|
---|
4915 | * @param pSession The caller's session.
|
---|
4916 | * @param pReq The request packet.
|
---|
4917 | */
|
---|
4918 | INTNETR0DECL(int) IntNetR0IfCloseReq(PSUPDRVSESSION pSession, PINTNETIFCLOSEREQ pReq)
|
---|
4919 | {
|
---|
4920 | if (RT_UNLIKELY(pReq->Hdr.cbReq != sizeof(*pReq)))
|
---|
4921 | return VERR_INVALID_PARAMETER;
|
---|
4922 | return IntNetR0IfClose(pReq->hIf, pSession);
|
---|
4923 | }
|
---|
4924 |
|
---|
4925 |
|
---|
4926 | /**
|
---|
4927 | * Interface destructor callback.
|
---|
4928 | * This is called for reference counted objectes when the count reaches 0.
|
---|
4929 | *
|
---|
4930 | * @param pvObj The object pointer.
|
---|
4931 | * @param pvUser1 Pointer to the interface.
|
---|
4932 | * @param pvUser2 Pointer to the INTNET instance data.
|
---|
4933 | */
|
---|
4934 | static DECLCALLBACK(void) intnetR0IfDestruct(void *pvObj, void *pvUser1, void *pvUser2)
|
---|
4935 | {
|
---|
4936 | PINTNETIF pIf = (PINTNETIF)pvUser1;
|
---|
4937 | PINTNET pIntNet = (PINTNET)pvUser2;
|
---|
4938 | Log(("intnetR0IfDestruct: pvObj=%p pIf=%p pIntNet=%p hIf=%RX32\n", pvObj, pIf, pIntNet, pIf->hIf));
|
---|
4939 | RT_NOREF1(pvObj);
|
---|
4940 |
|
---|
4941 | /*
|
---|
4942 | * For paranoid reasons we must now mark the interface as destroyed.
|
---|
4943 | * This is so that any waiting threads can take evasive action (kind
|
---|
4944 | * of theoretical case), and we can reject everyone else referencing
|
---|
4945 | * the object via the handle table before we get around to removing it.
|
---|
4946 | */
|
---|
4947 | ASMAtomicWriteHandle(&pIf->hDestructorThread, RTThreadNativeSelf());
|
---|
4948 |
|
---|
4949 | /*
|
---|
4950 | * We grab the INTNET create/open/destroy semaphore to make sure nobody is
|
---|
4951 | * adding or removing interfaces while we're in here.
|
---|
4952 | */
|
---|
4953 | RTSemMutexRequest(pIntNet->hMtxCreateOpenDestroy, RT_INDEFINITE_WAIT);
|
---|
4954 |
|
---|
4955 | /*
|
---|
4956 | * Delete the interface handle so the object no longer can be used.
|
---|
4957 | * (Can happen if the client didn't close its session.)
|
---|
4958 | */
|
---|
4959 | INTNETIFHANDLE hIf = ASMAtomicXchgU32(&pIf->hIf, INTNET_HANDLE_INVALID);
|
---|
4960 | if (hIf != INTNET_HANDLE_INVALID)
|
---|
4961 | {
|
---|
4962 | void *pvObj2 = RTHandleTableFreeWithCtx(pIntNet->hHtIfs, hIf, pIf->pSession); NOREF(pvObj2);
|
---|
4963 | AssertMsg(pvObj2 == pIf, ("%p, %p, hIf=%RX32 pSession=%p\n", pvObj2, pIf, hIf, pIf->pSession));
|
---|
4964 | }
|
---|
4965 |
|
---|
4966 | /*
|
---|
4967 | * If we've got a network deactivate and detach ourselves from it. Because
|
---|
4968 | * of cleanup order we might have been orphaned by the network destructor.
|
---|
4969 | */
|
---|
4970 | PINTNETNETWORK pNetwork = pIf->pNetwork;
|
---|
4971 | if (pNetwork)
|
---|
4972 | {
|
---|
4973 | /* set inactive. */
|
---|
4974 | intnetR0NetworkSetIfActive(pNetwork, pIf, false /*fActive*/);
|
---|
4975 |
|
---|
4976 | /* remove ourselves from the switch table. */
|
---|
4977 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
4978 |
|
---|
4979 | uint32_t iIf = pNetwork->MacTab.cEntries;
|
---|
4980 | while (iIf-- > 0)
|
---|
4981 | if (pNetwork->MacTab.paEntries[iIf].pIf == pIf)
|
---|
4982 | {
|
---|
4983 | if (pNetwork->MacTab.paEntries[iIf].fPromiscuousEff)
|
---|
4984 | {
|
---|
4985 | pNetwork->MacTab.cPromiscuousEntries--;
|
---|
4986 | if (!pNetwork->MacTab.paEntries[iIf].fPromiscuousSeeTrunk)
|
---|
4987 | pNetwork->MacTab.cPromiscuousNoTrunkEntries--;
|
---|
4988 | }
|
---|
4989 | Assert(pNetwork->MacTab.cPromiscuousEntries < pNetwork->MacTab.cEntries);
|
---|
4990 | Assert(pNetwork->MacTab.cPromiscuousNoTrunkEntries < pNetwork->MacTab.cEntries);
|
---|
4991 |
|
---|
4992 | if (iIf + 1 < pNetwork->MacTab.cEntries)
|
---|
4993 | memmove(&pNetwork->MacTab.paEntries[iIf],
|
---|
4994 | &pNetwork->MacTab.paEntries[iIf + 1],
|
---|
4995 | (pNetwork->MacTab.cEntries - iIf - 1) * sizeof(pNetwork->MacTab.paEntries[0]));
|
---|
4996 | pNetwork->MacTab.cEntries--;
|
---|
4997 | break;
|
---|
4998 | }
|
---|
4999 |
|
---|
5000 | /* recalc the min flags. */
|
---|
5001 | if (pIf->fOpenFlags & INTNET_OPEN_FLAGS_REQUIRE_AS_RESTRICTIVE_POLICIES)
|
---|
5002 | {
|
---|
5003 | uint32_t fMinFlags = 0;
|
---|
5004 | iIf = pNetwork->MacTab.cEntries;
|
---|
5005 | while (iIf-- > 0)
|
---|
5006 | {
|
---|
5007 | PINTNETIF pIf2 = pNetwork->MacTab.paEntries[iIf].pIf;
|
---|
5008 | if ( pIf2 /* paranoia */
|
---|
5009 | && (pIf2->fOpenFlags & INTNET_OPEN_FLAGS_REQUIRE_AS_RESTRICTIVE_POLICIES))
|
---|
5010 | fMinFlags |= pIf2->fOpenFlags & INTNET_OPEN_FLAGS_STRICT_MASK;
|
---|
5011 | }
|
---|
5012 | pNetwork->fMinFlags = fMinFlags;
|
---|
5013 | }
|
---|
5014 |
|
---|
5015 | PINTNETTRUNKIF pTrunk = pNetwork->MacTab.pTrunk;
|
---|
5016 |
|
---|
5017 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
5018 |
|
---|
5019 | /* Notify the trunk about the interface being destroyed. */
|
---|
5020 | if (pTrunk && pTrunk->pIfPort)
|
---|
5021 | pTrunk->pIfPort->pfnDisconnectInterface(pTrunk->pIfPort, pIf->pvIfData);
|
---|
5022 |
|
---|
5023 | /* Wait for the interface to quiesce while we still can. */
|
---|
5024 | intnetR0BusyWait(pNetwork, &pIf->cBusy);
|
---|
5025 |
|
---|
5026 | /* Release our reference to the network. */
|
---|
5027 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
5028 | pIf->pNetwork = NULL;
|
---|
5029 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
5030 |
|
---|
5031 | SUPR0ObjRelease(pNetwork->pvObj, pIf->pSession);
|
---|
5032 | }
|
---|
5033 |
|
---|
5034 | RTSemMutexRelease(pIntNet->hMtxCreateOpenDestroy);
|
---|
5035 |
|
---|
5036 | #if !defined(VBOX_WITH_INTNET_SERVICE_IN_R3) || !defined(IN_RING3)
|
---|
5037 | /*
|
---|
5038 | * Wakeup anyone waiting on this interface. (Kind of unlikely, but perhaps
|
---|
5039 | * not quite impossible.)
|
---|
5040 | *
|
---|
5041 | * We *must* make sure they have woken up properly and realized
|
---|
5042 | * that the interface is no longer valid.
|
---|
5043 | */
|
---|
5044 | if (pIf->hRecvEvent != NIL_RTSEMEVENT)
|
---|
5045 | {
|
---|
5046 | RTSEMEVENT hRecvEvent = pIf->hRecvEvent;
|
---|
5047 | unsigned cMaxWait = 0x1000;
|
---|
5048 | while (pIf->cSleepers && cMaxWait-- > 0)
|
---|
5049 | {
|
---|
5050 | RTSemEventSignal(hRecvEvent);
|
---|
5051 | RTThreadYield();
|
---|
5052 | }
|
---|
5053 | if (pIf->cSleepers)
|
---|
5054 | {
|
---|
5055 | RTThreadSleep(1);
|
---|
5056 |
|
---|
5057 | cMaxWait = pIf->cSleepers;
|
---|
5058 | while (pIf->cSleepers && cMaxWait-- > 0)
|
---|
5059 | {
|
---|
5060 | RTSemEventSignal(hRecvEvent);
|
---|
5061 | RTThreadSleep(10);
|
---|
5062 | }
|
---|
5063 | }
|
---|
5064 |
|
---|
5065 | RTSemEventDestroy(hRecvEvent);
|
---|
5066 | pIf->hRecvEvent = NIL_RTSEMEVENT;
|
---|
5067 | }
|
---|
5068 | #endif
|
---|
5069 |
|
---|
5070 | /*
|
---|
5071 | * Unmap user buffer.
|
---|
5072 | */
|
---|
5073 | if (pIf->pIntBuf != pIf->pIntBufDefault)
|
---|
5074 | {
|
---|
5075 | /** @todo user buffer */
|
---|
5076 | }
|
---|
5077 |
|
---|
5078 | /*
|
---|
5079 | * Unmap and Free the default buffer.
|
---|
5080 | */
|
---|
5081 | if (pIf->pIntBufDefault)
|
---|
5082 | {
|
---|
5083 | SUPR0MemFree(pIf->pSession, (RTHCUINTPTR)pIf->pIntBufDefault);
|
---|
5084 | pIf->pIntBufDefault = NULL;
|
---|
5085 | pIf->pIntBufDefaultR3 = 0;
|
---|
5086 | pIf->pIntBuf = NULL;
|
---|
5087 | pIf->pIntBufR3 = 0;
|
---|
5088 | }
|
---|
5089 |
|
---|
5090 | /*
|
---|
5091 | * Free remaining resources
|
---|
5092 | */
|
---|
5093 | RTSpinlockDestroy(pIf->hRecvInSpinlock);
|
---|
5094 | pIf->hRecvInSpinlock = NIL_RTSPINLOCK;
|
---|
5095 |
|
---|
5096 | RTMemFree(pIf->pDstTab);
|
---|
5097 | pIf->pDstTab = NULL;
|
---|
5098 |
|
---|
5099 | for (int i = kIntNetAddrType_Invalid + 1; i < kIntNetAddrType_End; i++)
|
---|
5100 | intnetR0IfAddrCacheDestroy(&pIf->aAddrCache[i]);
|
---|
5101 |
|
---|
5102 | pIf->pvObj = NULL;
|
---|
5103 | RTMemFree(pIf);
|
---|
5104 | }
|
---|
5105 |
|
---|
5106 |
|
---|
5107 | /* Forward declaration of trunk reconnection thread function. */
|
---|
5108 | static DECLCALLBACK(int) intnetR0TrunkReconnectThread(RTTHREAD hThread, void *pvUser);
|
---|
5109 |
|
---|
5110 | /**
|
---|
5111 | * Creates a new network interface.
|
---|
5112 | *
|
---|
5113 | * The call must have opened the network for the new interface and is
|
---|
5114 | * responsible for closing it on failure. On success it must leave the network
|
---|
5115 | * opened so the interface destructor can close it.
|
---|
5116 | *
|
---|
5117 | * @returns VBox status code.
|
---|
5118 | * @param pNetwork The network, referenced. The reference is consumed
|
---|
5119 | * on success.
|
---|
5120 | * @param pSession The session handle.
|
---|
5121 | * @param cbSend The size of the send buffer.
|
---|
5122 | * @param cbRecv The size of the receive buffer.
|
---|
5123 | * @param fFlags The open network flags.
|
---|
5124 | * @param pfnRecvAvail The receive available callback to call instead of
|
---|
5125 | * signalling the semaphore (R3 service only).
|
---|
5126 | * @param pvUser The opaque user data to pass to the callback.
|
---|
5127 | * @param phIf Where to store the interface handle.
|
---|
5128 | */
|
---|
5129 | static int intnetR0NetworkCreateIf(PINTNETNETWORK pNetwork, PSUPDRVSESSION pSession, unsigned cbSend, unsigned cbRecv,
|
---|
5130 | uint32_t fFlags, PFNINTNETIFRECVAVAIL pfnRecvAvail, void *pvUser, PINTNETIFHANDLE phIf)
|
---|
5131 | {
|
---|
5132 | LogFlow(("intnetR0NetworkCreateIf: pNetwork=%p pSession=%p cbSend=%u cbRecv=%u fFlags=%#x phIf=%p\n",
|
---|
5133 | pNetwork, pSession, cbSend, cbRecv, fFlags, phIf));
|
---|
5134 |
|
---|
5135 | /*
|
---|
5136 | * Assert input.
|
---|
5137 | */
|
---|
5138 | AssertPtr(pNetwork);
|
---|
5139 | AssertPtr(phIf);
|
---|
5140 | #if !defined(VBOX_WITH_INTNET_SERVICE_IN_R3) || !defined(IN_RING3)
|
---|
5141 | Assert(pfnRecvAvail == NULL);
|
---|
5142 | Assert(pvUser == NULL);
|
---|
5143 | RT_NOREF(pfnRecvAvail, pvUser);
|
---|
5144 | #endif
|
---|
5145 |
|
---|
5146 | /*
|
---|
5147 | * Adjust the flags with defaults for the interface policies.
|
---|
5148 | * Note: Main restricts promiscuous mode per interface.
|
---|
5149 | */
|
---|
5150 | uint32_t const fDefFlags = INTNET_OPEN_FLAGS_IF_PROMISC_ALLOW
|
---|
5151 | | INTNET_OPEN_FLAGS_IF_PROMISC_SEE_TRUNK;
|
---|
5152 | for (uint32_t i = 0; i < RT_ELEMENTS(g_afIntNetOpenNetworkIfFlags); i++)
|
---|
5153 | if (!(fFlags & g_afIntNetOpenNetworkIfFlags[i].fPair))
|
---|
5154 | fFlags |= g_afIntNetOpenNetworkIfFlags[i].fPair & fDefFlags;
|
---|
5155 |
|
---|
5156 | /*
|
---|
5157 | * Make sure that all destination tables as well as the have space of
|
---|
5158 | */
|
---|
5159 | int rc = intnetR0NetworkEnsureTabSpace(pNetwork);
|
---|
5160 | if (RT_FAILURE(rc))
|
---|
5161 | return rc;
|
---|
5162 |
|
---|
5163 | /*
|
---|
5164 | * Allocate the interface and initialize it.
|
---|
5165 | */
|
---|
5166 | PINTNETIF pIf = (PINTNETIF)RTMemAllocZ(sizeof(*pIf));
|
---|
5167 | if (!pIf)
|
---|
5168 | return VERR_NO_MEMORY;
|
---|
5169 |
|
---|
5170 | memset(&pIf->MacAddr, 0xff, sizeof(pIf->MacAddr)); /* broadcast */
|
---|
5171 | //pIf->fMacSet = false;
|
---|
5172 | //pIf->fPromiscuousReal = false;
|
---|
5173 | //pIf->fActive = false;
|
---|
5174 | //pIf->fNoMoreWaits = false;
|
---|
5175 | pIf->fOpenFlags = fFlags;
|
---|
5176 | //pIf->cYields = 0;
|
---|
5177 | //pIf->pIntBuf = 0;
|
---|
5178 | //pIf->pIntBufR3 = NIL_RTR3PTR;
|
---|
5179 | //pIf->pIntBufDefault = 0;
|
---|
5180 | //pIf->pIntBufDefaultR3 = NIL_RTR3PTR;
|
---|
5181 | #if !defined(VBOX_WITH_INTNET_SERVICE_IN_R3) || !defined(IN_RING3)
|
---|
5182 | pIf->hRecvEvent = NIL_RTSEMEVENT;
|
---|
5183 | #else
|
---|
5184 | pIf->pfnRecvAvail = pfnRecvAvail;
|
---|
5185 | pIf->pvUserRecvAvail = pvUser;
|
---|
5186 | #endif
|
---|
5187 | //pIf->cSleepers = 0;
|
---|
5188 | pIf->hIf = INTNET_HANDLE_INVALID;
|
---|
5189 | pIf->hDestructorThread = NIL_RTNATIVETHREAD;
|
---|
5190 | pIf->pNetwork = pNetwork;
|
---|
5191 | pIf->pSession = pSession;
|
---|
5192 | //pIf->pvObj = NULL;
|
---|
5193 | //pIf->aAddrCache = {0};
|
---|
5194 | pIf->hRecvInSpinlock = NIL_RTSPINLOCK;
|
---|
5195 | pIf->cBusy = 0;
|
---|
5196 | //pIf->pDstTab = NULL;
|
---|
5197 | //pIf->pvIfData = NULL;
|
---|
5198 |
|
---|
5199 | for (int i = kIntNetAddrType_Invalid + 1; i < kIntNetAddrType_End && RT_SUCCESS(rc); i++)
|
---|
5200 | rc = intnetR0IfAddrCacheInit(&pIf->aAddrCache[i], (INTNETADDRTYPE)i,
|
---|
5201 | !!(pNetwork->fFlags & INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE));
|
---|
5202 | if (RT_SUCCESS(rc))
|
---|
5203 | rc = intnetR0AllocDstTab(pNetwork->MacTab.cEntriesAllocated, (PINTNETDSTTAB *)&pIf->pDstTab);
|
---|
5204 | #if !defined(VBOX_WITH_INTNET_SERVICE_IN_R3) || !defined(IN_RING3)
|
---|
5205 | if (RT_SUCCESS(rc))
|
---|
5206 | rc = RTSemEventCreate((PRTSEMEVENT)&pIf->hRecvEvent);
|
---|
5207 | #endif
|
---|
5208 | if (RT_SUCCESS(rc))
|
---|
5209 | rc = RTSpinlockCreate(&pIf->hRecvInSpinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "hRecvInSpinlock");
|
---|
5210 | if (RT_SUCCESS(rc))
|
---|
5211 | {
|
---|
5212 | /*
|
---|
5213 | * Create the default buffer.
|
---|
5214 | */
|
---|
5215 | /** @todo adjust with minimums and apply defaults here. */
|
---|
5216 | cbRecv = RT_ALIGN(RT_MAX(cbRecv, sizeof(INTNETHDR) * 4), INTNETRINGBUF_ALIGNMENT);
|
---|
5217 | cbSend = RT_ALIGN(RT_MAX(cbSend, sizeof(INTNETHDR) * 4), INTNETRINGBUF_ALIGNMENT);
|
---|
5218 | const unsigned cbBuf = RT_ALIGN(sizeof(*pIf->pIntBuf), INTNETRINGBUF_ALIGNMENT) + cbRecv + cbSend;
|
---|
5219 | rc = SUPR0MemAlloc(pIf->pSession, cbBuf, (PRTR0PTR)&pIf->pIntBufDefault, (PRTR3PTR)&pIf->pIntBufDefaultR3);
|
---|
5220 | if (RT_SUCCESS(rc))
|
---|
5221 | {
|
---|
5222 | RT_BZERO(pIf->pIntBufDefault, cbBuf); /** @todo I thought I specified these buggers as clearing the memory... */
|
---|
5223 |
|
---|
5224 | pIf->pIntBuf = pIf->pIntBufDefault;
|
---|
5225 | pIf->pIntBufR3 = pIf->pIntBufDefaultR3;
|
---|
5226 | IntNetBufInit(pIf->pIntBuf, cbBuf, cbRecv, cbSend);
|
---|
5227 |
|
---|
5228 | /*
|
---|
5229 | * Register the interface with the session and create a handle for it.
|
---|
5230 | */
|
---|
5231 | pIf->pvObj = SUPR0ObjRegister(pSession, SUPDRVOBJTYPE_INTERNAL_NETWORK_INTERFACE,
|
---|
5232 | intnetR0IfDestruct, pIf, pNetwork->pIntNet);
|
---|
5233 | if (pIf->pvObj)
|
---|
5234 | {
|
---|
5235 | rc = RTHandleTableAllocWithCtx(pNetwork->pIntNet->hHtIfs, pIf, pSession, (uint32_t *)&pIf->hIf);
|
---|
5236 | if (RT_SUCCESS(rc))
|
---|
5237 | {
|
---|
5238 | /*
|
---|
5239 | * Finally add the interface to the network, consuming the
|
---|
5240 | * network reference of the caller.
|
---|
5241 | */
|
---|
5242 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
5243 |
|
---|
5244 | uint32_t iIf = pNetwork->MacTab.cEntries;
|
---|
5245 | Assert(iIf + 1 <= pNetwork->MacTab.cEntriesAllocated);
|
---|
5246 |
|
---|
5247 | pNetwork->MacTab.paEntries[iIf].MacAddr = pIf->MacAddr;
|
---|
5248 | pNetwork->MacTab.paEntries[iIf].fActive = false;
|
---|
5249 | pNetwork->MacTab.paEntries[iIf].fPromiscuousEff = false;
|
---|
5250 | pNetwork->MacTab.paEntries[iIf].fPromiscuousSeeTrunk = false;
|
---|
5251 | pNetwork->MacTab.paEntries[iIf].pIf = pIf;
|
---|
5252 |
|
---|
5253 | pNetwork->MacTab.cEntries = iIf + 1;
|
---|
5254 | pIf->pNetwork = pNetwork;
|
---|
5255 |
|
---|
5256 | /*
|
---|
5257 | * Grab a busy reference (paranoia) to the trunk before releasing
|
---|
5258 | * the spinlock and then notify it about the new interface.
|
---|
5259 | */
|
---|
5260 | PINTNETTRUNKIF pTrunk = pNetwork->MacTab.pTrunk;
|
---|
5261 | if (pTrunk)
|
---|
5262 | intnetR0BusyIncTrunk(pTrunk);
|
---|
5263 |
|
---|
5264 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
5265 |
|
---|
5266 | if (pTrunk)
|
---|
5267 | {
|
---|
5268 | Log(("intnetR0NetworkCreateIf: pfnConnectInterface hIf=%RX32\n", pIf->hIf));
|
---|
5269 | if (pTrunk->pIfPort)
|
---|
5270 | rc = pTrunk->pIfPort->pfnConnectInterface(pTrunk->pIfPort, pIf, &pIf->pvIfData);
|
---|
5271 | intnetR0BusyDecTrunk(pTrunk);
|
---|
5272 | }
|
---|
5273 | if (RT_SUCCESS(rc))
|
---|
5274 | {
|
---|
5275 | /*
|
---|
5276 | * We're good!
|
---|
5277 | */
|
---|
5278 | *phIf = pIf->hIf;
|
---|
5279 | Log(("intnetR0NetworkCreateIf: returns VINF_SUCCESS *phIf=%RX32 cbSend=%u cbRecv=%u cbBuf=%u\n",
|
---|
5280 | *phIf, pIf->pIntBufDefault->cbSend, pIf->pIntBufDefault->cbRecv, pIf->pIntBufDefault->cbBuf));
|
---|
5281 | return VINF_SUCCESS;
|
---|
5282 | }
|
---|
5283 | }
|
---|
5284 |
|
---|
5285 | SUPR0ObjAddRef(pNetwork->pvObj, pSession);
|
---|
5286 | SUPR0ObjRelease(pIf->pvObj, pSession);
|
---|
5287 | LogFlow(("intnetR0NetworkCreateIf: returns %Rrc\n", rc));
|
---|
5288 | return rc;
|
---|
5289 | }
|
---|
5290 |
|
---|
5291 | /* clean up */
|
---|
5292 | SUPR0MemFree(pIf->pSession, (RTHCUINTPTR)pIf->pIntBufDefault);
|
---|
5293 | pIf->pIntBufDefault = NULL;
|
---|
5294 | pIf->pIntBuf = NULL;
|
---|
5295 | }
|
---|
5296 | }
|
---|
5297 |
|
---|
5298 | RTSpinlockDestroy(pIf->hRecvInSpinlock);
|
---|
5299 | pIf->hRecvInSpinlock = NIL_RTSPINLOCK;
|
---|
5300 | #if !defined(VBOX_WITH_INTNET_SERVICE_IN_R3) || !defined(IN_RING3)
|
---|
5301 | RTSemEventDestroy(pIf->hRecvEvent);
|
---|
5302 | pIf->hRecvEvent = NIL_RTSEMEVENT;
|
---|
5303 | #else
|
---|
5304 | pIf->pfnRecvAvail = NULL;
|
---|
5305 | pIf->pvUserRecvAvail = NULL;
|
---|
5306 | #endif
|
---|
5307 | RTMemFree(pIf->pDstTab);
|
---|
5308 | for (int i = kIntNetAddrType_Invalid + 1; i < kIntNetAddrType_End; i++)
|
---|
5309 | intnetR0IfAddrCacheDestroy(&pIf->aAddrCache[i]);
|
---|
5310 | RTMemFree(pIf);
|
---|
5311 | LogFlow(("intnetR0NetworkCreateIf: returns %Rrc\n", rc));
|
---|
5312 | return rc;
|
---|
5313 | }
|
---|
5314 |
|
---|
5315 |
|
---|
5316 | /** @interface_method_impl{INTNETTRUNKSWPORT,pfnSetSGPhys} */
|
---|
5317 | static DECLCALLBACK(bool) intnetR0TrunkIfPortSetSGPhys(PINTNETTRUNKSWPORT pSwitchPort, bool fEnable)
|
---|
5318 | {
|
---|
5319 | PINTNETTRUNKIF pThis = INTNET_SWITCHPORT_2_TRUNKIF(pSwitchPort);
|
---|
5320 | AssertMsgFailed(("Not implemented because it wasn't required on Darwin\n"));
|
---|
5321 | return ASMAtomicXchgBool(&pThis->fPhysSG, fEnable);
|
---|
5322 | }
|
---|
5323 |
|
---|
5324 |
|
---|
5325 | /** @interface_method_impl{INTNETTRUNKSWPORT,pfnReportMacAddress} */
|
---|
5326 | static DECLCALLBACK(void) intnetR0TrunkIfPortReportMacAddress(PINTNETTRUNKSWPORT pSwitchPort, PCRTMAC pMacAddr)
|
---|
5327 | {
|
---|
5328 | PINTNETTRUNKIF pThis = INTNET_SWITCHPORT_2_TRUNKIF(pSwitchPort);
|
---|
5329 |
|
---|
5330 | /*
|
---|
5331 | * Get the network instance and grab the address spinlock before making
|
---|
5332 | * any changes.
|
---|
5333 | */
|
---|
5334 | intnetR0BusyIncTrunk(pThis);
|
---|
5335 | PINTNETNETWORK pNetwork = pThis->pNetwork;
|
---|
5336 | if (pNetwork)
|
---|
5337 | {
|
---|
5338 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
5339 |
|
---|
5340 | pNetwork->MacTab.HostMac = *pMacAddr;
|
---|
5341 | pThis->MacAddr = *pMacAddr;
|
---|
5342 |
|
---|
5343 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
5344 | }
|
---|
5345 | else
|
---|
5346 | pThis->MacAddr = *pMacAddr;
|
---|
5347 | intnetR0BusyDecTrunk(pThis);
|
---|
5348 | }
|
---|
5349 |
|
---|
5350 |
|
---|
5351 | /** @interface_method_impl{INTNETTRUNKSWPORT,pfnReportPromiscuousMode} */
|
---|
5352 | static DECLCALLBACK(void) intnetR0TrunkIfPortReportPromiscuousMode(PINTNETTRUNKSWPORT pSwitchPort, bool fPromiscuous)
|
---|
5353 | {
|
---|
5354 | PINTNETTRUNKIF pThis = INTNET_SWITCHPORT_2_TRUNKIF(pSwitchPort);
|
---|
5355 |
|
---|
5356 | /*
|
---|
5357 | * Get the network instance and grab the address spinlock before making
|
---|
5358 | * any changes.
|
---|
5359 | */
|
---|
5360 | intnetR0BusyIncTrunk(pThis);
|
---|
5361 | PINTNETNETWORK pNetwork = pThis->pNetwork;
|
---|
5362 | if (pNetwork)
|
---|
5363 | {
|
---|
5364 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
5365 |
|
---|
5366 | pNetwork->MacTab.fHostPromiscuousReal = fPromiscuous
|
---|
5367 | || (pNetwork->fFlags & INTNET_OPEN_FLAGS_TRUNK_HOST_PROMISC_MODE);
|
---|
5368 | pNetwork->MacTab.fHostPromiscuousEff = pNetwork->MacTab.fHostPromiscuousReal
|
---|
5369 | && (pNetwork->fFlags & INTNET_OPEN_FLAGS_PROMISC_ALLOW_TRUNK_HOST);
|
---|
5370 |
|
---|
5371 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
5372 | }
|
---|
5373 | intnetR0BusyDecTrunk(pThis);
|
---|
5374 | }
|
---|
5375 |
|
---|
5376 |
|
---|
5377 | /** @interface_method_impl{INTNETTRUNKSWPORT,pfnReportGsoCapabilities} */
|
---|
5378 | static DECLCALLBACK(void) intnetR0TrunkIfPortReportGsoCapabilities(PINTNETTRUNKSWPORT pSwitchPort,
|
---|
5379 | uint32_t fGsoCapabilities, uint32_t fDst)
|
---|
5380 | {
|
---|
5381 | PINTNETTRUNKIF pThis = INTNET_SWITCHPORT_2_TRUNKIF(pSwitchPort);
|
---|
5382 |
|
---|
5383 | for (unsigned iBit = PDMNETWORKGSOTYPE_END; iBit < 32; iBit++)
|
---|
5384 | Assert(!(fGsoCapabilities & RT_BIT_32(iBit)));
|
---|
5385 | Assert(!(fDst & ~INTNETTRUNKDIR_VALID_MASK));
|
---|
5386 | Assert(fDst);
|
---|
5387 |
|
---|
5388 | if (fDst & INTNETTRUNKDIR_HOST)
|
---|
5389 | pThis->fHostGsoCapabilites = fGsoCapabilities;
|
---|
5390 |
|
---|
5391 | if (fDst & INTNETTRUNKDIR_WIRE)
|
---|
5392 | pThis->fWireGsoCapabilites = fGsoCapabilities;
|
---|
5393 | }
|
---|
5394 |
|
---|
5395 |
|
---|
5396 | /** @interface_method_impl{INTNETTRUNKSWPORT,pfnReportNoPreemptDsts} */
|
---|
5397 | static DECLCALLBACK(void) intnetR0TrunkIfPortReportNoPreemptDsts(PINTNETTRUNKSWPORT pSwitchPort, uint32_t fNoPreemptDsts)
|
---|
5398 | {
|
---|
5399 | PINTNETTRUNKIF pThis = INTNET_SWITCHPORT_2_TRUNKIF(pSwitchPort);
|
---|
5400 | Assert(!(fNoPreemptDsts & ~INTNETTRUNKDIR_VALID_MASK));
|
---|
5401 |
|
---|
5402 | pThis->fNoPreemptDsts = fNoPreemptDsts;
|
---|
5403 | }
|
---|
5404 |
|
---|
5405 |
|
---|
5406 | /** @interface_method_impl{INTNETTRUNKSWPORT,pfnDisconnect} */
|
---|
5407 | static DECLCALLBACK(void) intnetR0TrunkIfPortDisconnect(PINTNETTRUNKSWPORT pSwitchPort, PINTNETTRUNKIFPORT pIfPort,
|
---|
5408 | PFNINTNETTRUNKIFPORTRELEASEBUSY pfnReleaseBusy)
|
---|
5409 | {
|
---|
5410 | PINTNETTRUNKIF pThis = INTNET_SWITCHPORT_2_TRUNKIF(pSwitchPort);
|
---|
5411 |
|
---|
5412 | /*
|
---|
5413 | * The caller has marked the trunk instance busy on his side before making
|
---|
5414 | * the call (see method docs) to let us safely grab the network and internal
|
---|
5415 | * network instance pointers without racing the network destruction code
|
---|
5416 | * (intnetR0TrunkIfDestroy (called by intnetR0TrunkIfDestroy) will wait for
|
---|
5417 | * the interface to stop being busy before setting pNetwork to NULL and
|
---|
5418 | * freeing up the resources).
|
---|
5419 | */
|
---|
5420 | PINTNETNETWORK pNetwork = pThis->pNetwork;
|
---|
5421 | if (pNetwork)
|
---|
5422 | {
|
---|
5423 | PINTNET pIntNet = pNetwork->pIntNet;
|
---|
5424 | Assert(pNetwork->pIntNet);
|
---|
5425 |
|
---|
5426 | /*
|
---|
5427 | * We must decrease the callers busy count here to prevent deadlocking
|
---|
5428 | * when requesting the big mutex ownership. This will of course
|
---|
5429 | * unblock anyone stuck in intnetR0TrunkIfDestroy doing pfnWaitForIdle
|
---|
5430 | * (the other deadlock party), so we have to revalidate the network
|
---|
5431 | * pointer after taking ownership of the big mutex.
|
---|
5432 | */
|
---|
5433 | if (pfnReleaseBusy)
|
---|
5434 | pfnReleaseBusy(pIfPort);
|
---|
5435 |
|
---|
5436 | RTSemMutexRequest(pIntNet->hMtxCreateOpenDestroy, RT_INDEFINITE_WAIT);
|
---|
5437 |
|
---|
5438 | if (intnetR0NetworkIsValid(pIntNet, pNetwork))
|
---|
5439 | {
|
---|
5440 | Assert(pNetwork->MacTab.pTrunk == pThis); /* Must be valid as long as tehre are no concurrent calls to this method. */
|
---|
5441 | Assert(pThis->pIfPort == pIfPort); /* Ditto */
|
---|
5442 |
|
---|
5443 | /*
|
---|
5444 | * Disconnect the trunk and destroy it, similar to what is done int
|
---|
5445 | * intnetR0NetworkDestruct.
|
---|
5446 | */
|
---|
5447 | pIfPort->pfnSetState(pIfPort, INTNETTRUNKIFSTATE_DISCONNECTING);
|
---|
5448 |
|
---|
5449 | RTSpinlockAcquire(pNetwork->hAddrSpinlock);
|
---|
5450 | pNetwork->MacTab.pTrunk = NULL;
|
---|
5451 | RTSpinlockRelease(pNetwork->hAddrSpinlock);
|
---|
5452 |
|
---|
5453 | /*
|
---|
5454 | * Create a system thread that will attempt to re-connect this trunk periodically
|
---|
5455 | * hoping that the corresponding filter module reappears in the system. The thread
|
---|
5456 | * will go away if it succeeds in re-connecting the trunk or if it is signalled.
|
---|
5457 | */
|
---|
5458 | int rc = RTThreadCreate(&pNetwork->hTrunkReconnectThread, intnetR0TrunkReconnectThread, pNetwork,
|
---|
5459 | 0, RTTHREADTYPE_INFREQUENT_POLLER, RTTHREADFLAGS_WAITABLE, "TRNKRECON");
|
---|
5460 | AssertRC(rc);
|
---|
5461 |
|
---|
5462 | intnetR0TrunkIfDestroy(pThis, pNetwork);
|
---|
5463 | }
|
---|
5464 |
|
---|
5465 | RTSemMutexRelease(pIntNet->hMtxCreateOpenDestroy);
|
---|
5466 | }
|
---|
5467 | /*
|
---|
5468 | * We must always release the busy reference.
|
---|
5469 | */
|
---|
5470 | else if (pfnReleaseBusy)
|
---|
5471 | pfnReleaseBusy(pIfPort);
|
---|
5472 | }
|
---|
5473 |
|
---|
5474 |
|
---|
5475 | /** @interface_method_impl{INTNETTRUNKSWPORT,pfnPreRecv} */
|
---|
5476 | static DECLCALLBACK(INTNETSWDECISION) intnetR0TrunkIfPortPreRecv(PINTNETTRUNKSWPORT pSwitchPort,
|
---|
5477 | void const *pvSrc, size_t cbSrc, uint32_t fSrc)
|
---|
5478 | {
|
---|
5479 | PINTNETTRUNKIF pThis = INTNET_SWITCHPORT_2_TRUNKIF(pSwitchPort);
|
---|
5480 |
|
---|
5481 | /* assert some sanity */
|
---|
5482 | AssertPtr(pvSrc);
|
---|
5483 | AssertReturn(cbSrc >= 6, INTNETSWDECISION_BROADCAST);
|
---|
5484 | Assert(fSrc);
|
---|
5485 |
|
---|
5486 | /*
|
---|
5487 | * Mark the trunk as busy, make sure we've got a network and that there are
|
---|
5488 | * some active interfaces around.
|
---|
5489 | */
|
---|
5490 | INTNETSWDECISION enmSwDecision = INTNETSWDECISION_TRUNK;
|
---|
5491 | intnetR0BusyIncTrunk(pThis);
|
---|
5492 | PINTNETNETWORK pNetwork = pThis->pNetwork;
|
---|
5493 | if (RT_LIKELY( pNetwork
|
---|
5494 | && pNetwork->cActiveIFs > 0 ))
|
---|
5495 | {
|
---|
5496 | /*
|
---|
5497 | * Lazy bird! No pre-switching of multicast and shared-MAC-on-wire.
|
---|
5498 | */
|
---|
5499 | PCRTNETETHERHDR pEthHdr = (PCRTNETETHERHDR)pvSrc;
|
---|
5500 | if (intnetR0IsMacAddrMulticast(&pEthHdr->DstMac))
|
---|
5501 | enmSwDecision = INTNETSWDECISION_BROADCAST;
|
---|
5502 | else if ( fSrc == INTNETTRUNKDIR_WIRE
|
---|
5503 | && (pNetwork->fFlags & INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE))
|
---|
5504 | enmSwDecision = INTNETSWDECISION_BROADCAST;
|
---|
5505 | else
|
---|
5506 | enmSwDecision = intnetR0NetworkPreSwitchUnicast(pNetwork,
|
---|
5507 | fSrc,
|
---|
5508 | cbSrc >= 12 ? &pEthHdr->SrcMac : NULL,
|
---|
5509 | &pEthHdr->DstMac);
|
---|
5510 | }
|
---|
5511 |
|
---|
5512 | intnetR0BusyDecTrunk(pThis);
|
---|
5513 | return enmSwDecision;
|
---|
5514 | }
|
---|
5515 |
|
---|
5516 |
|
---|
5517 | /** @interface_method_impl{INTNETTRUNKSWPORT,pfnRecv} */
|
---|
5518 | static DECLCALLBACK(bool) intnetR0TrunkIfPortRecv(PINTNETTRUNKSWPORT pSwitchPort, void *pvIf, PINTNETSG pSG, uint32_t fSrc)
|
---|
5519 | {
|
---|
5520 | PINTNETTRUNKIF pThis = INTNET_SWITCHPORT_2_TRUNKIF(pSwitchPort);
|
---|
5521 |
|
---|
5522 | /* assert some sanity */
|
---|
5523 | AssertPtr(pSG);
|
---|
5524 | Assert(fSrc);
|
---|
5525 | NOREF(pvIf); /* later */
|
---|
5526 |
|
---|
5527 | /*
|
---|
5528 | * Mark the trunk as busy, make sure we've got a network and that there are
|
---|
5529 | * some active interfaces around.
|
---|
5530 | */
|
---|
5531 | bool fRc = false /* don't drop it */;
|
---|
5532 | intnetR0BusyIncTrunk(pThis);
|
---|
5533 | PINTNETNETWORK pNetwork = pThis->pNetwork;
|
---|
5534 | if (RT_LIKELY( pNetwork
|
---|
5535 | && pNetwork->cActiveIFs > 0 ))
|
---|
5536 | {
|
---|
5537 | /*
|
---|
5538 | * Grab or allocate a destination table.
|
---|
5539 | */
|
---|
5540 | bool const fIntCtx = RTThreadPreemptIsEnabled(NIL_RTTHREAD) || RTThreadIsInInterrupt(NIL_RTTHREAD);
|
---|
5541 | unsigned iDstTab = 0;
|
---|
5542 | PINTNETDSTTAB pDstTab = NULL;
|
---|
5543 | RTSpinlockAcquire(pThis->hDstTabSpinlock);
|
---|
5544 | if (fIntCtx)
|
---|
5545 | {
|
---|
5546 | /* Interrupt or restricted context. */
|
---|
5547 | iDstTab = RTMpCpuIdToSetIndex(RTMpCpuId());
|
---|
5548 | iDstTab %= pThis->cIntDstTabs;
|
---|
5549 | pDstTab = pThis->apIntDstTabs[iDstTab];
|
---|
5550 | if (RT_LIKELY(pDstTab))
|
---|
5551 | pThis->apIntDstTabs[iDstTab] = NULL;
|
---|
5552 | else
|
---|
5553 | {
|
---|
5554 | iDstTab = pThis->cIntDstTabs;
|
---|
5555 | while (iDstTab-- > 0)
|
---|
5556 | {
|
---|
5557 | pDstTab = pThis->apIntDstTabs[iDstTab];
|
---|
5558 | if (pDstTab)
|
---|
5559 | {
|
---|
5560 | pThis->apIntDstTabs[iDstTab] = NULL;
|
---|
5561 | break;
|
---|
5562 | }
|
---|
5563 | }
|
---|
5564 | }
|
---|
5565 | RTSpinlockRelease(pThis->hDstTabSpinlock);
|
---|
5566 | Assert(!pDstTab || iDstTab < pThis->cIntDstTabs);
|
---|
5567 | }
|
---|
5568 | else
|
---|
5569 | {
|
---|
5570 | /* Task context, fallback is to allocate a table. */
|
---|
5571< |
---|