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annotate rathaxes_start_to_implement_sk_buff_in_the_lkm.patch @ 24:60dd543b67b0

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WIP on the e1000 pci stuff
author Louis Opter <louis@lse.epitech.net>
date Sat, 07 Jan 2012 20:02:23 +0100
parents f0ab7ee21dd8
children e330b0cea45e
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1 # HG changeset patch
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2 # Parent bffc8f046282cb07fab2c8ef86cf4fff344fdefc
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3 rathaxes: add sk_buff abstraction and add the implementation of the xmit function for the ethernet system. We have a fully (empty) functionnal ethernet driver
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4
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5 diff --git a/rathaxes/samples/lkm/CMakeLists.txt b/rathaxes/samples/lkm/CMakeLists.txt
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6 --- a/rathaxes/samples/lkm/CMakeLists.txt
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7 +++ b/rathaxes/samples/lkm/CMakeLists.txt
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8 @@ -1,6 +1,6 @@
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9 ADD_RATHAXES_SOURCES(lkm lkm.rtx
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10 - RTI log.rti lkm.rti pci.rti ethernet.rti
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11 - BLT log.blt lkm.blt pci.blt ethernet.blt)
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12 + RTI log.rti lkm.rti pci.rti socket.rti ethernet.rti e1000.rti
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13 + BLT log.blt lkm.blt pci.blt socket.blt ethernet.blt e1000.blt)
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15 # We can't name lkm since it's already used as the target name to generate the
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16 # source (with ADD_RATHAXES_SOURCES).
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17 diff --git a/rathaxes/samples/lkm/e1000.blt b/rathaxes/samples/lkm/e1000.blt
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18 new file mode 100644
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19 --- /dev/null
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20 +++ b/rathaxes/samples/lkm/e1000.blt
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21 @@ -0,0 +1,49 @@
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22 +with e1000, Ethernet, Socket, PCI, LKM, Log
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23 +{
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24 + template type e1000::Context()
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25 + {
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26 + chunk LKM::includes()
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27 + {
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28 + /*
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29 + * Force the generation of the structure in the "headers part, we
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30 + * have to do this since we do not use the structure in this blt
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31 + * (we hacked a bit and used it in ethernet.blt directly).
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32 + */
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33 + typedef int ${e1000::Context}; /* CNorm __std__ workaround */
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34 + ${e1000::Context} force_declaration_in_includes;
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35 + }
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36 +
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37 + chunk ::decl()
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38 + {
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39 + struct rtx_e1000_ctx
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40 + {
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41 + unsigned char /* __iomem */ *ioaddr;
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42 + };
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43 + }
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44 +
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45 + map
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46 + {
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47 + }
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48 + }
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49 +
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50 + template sequence e1000::create()
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51 + {
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52 + chunk ::CALL
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53 + {
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54 + int bars = pci_select_bars(pdev, IORESOURCE_MEM);
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55 + if (pci_enable_device_mem(pdev))
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56 + ${Log::info("e1000::create: pci_enable_device_mem failed")};
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57 +
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58 + if (pci_request_selected_regions(pdev, bars, ${config.name}))
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59 + ${Log::info("e1000::create: pci_request_selected_regions failed")};
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60 +
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61 + if (${config.set_master})
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62 + pci_set_master(pdev);
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63 +
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64 + /* 0 here is for BAR_0: */
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65 + rtx_ether_ctx->hw_ctx.ioaddr = pci_ioremap_bar(pdev, 0);
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66 + if (!rtx_ether_ctx->hw_ctx.ioaddr)
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67 + ${Log::info("e1000::create: pci_ioremap_bar failed")};
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68 + }
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69 + }
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70 +}
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71 diff --git a/rathaxes/samples/lkm/e1000.rti b/rathaxes/samples/lkm/e1000.rti
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72 new file mode 100644
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73 --- /dev/null
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74 +++ b/rathaxes/samples/lkm/e1000.rti
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75 @@ -0,0 +1,10 @@
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76 +interface e1000 : Socket, Ethernet, PCI, LKM
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77 +{
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78 + provided type e1000::Context;
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79 +
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80 + /* Not sure if we need the argument */
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81 + provided sequence e1000::create()
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82 + {
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83 + provided chunk ::CALL;
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84 + }
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85 +}
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86 diff --git a/rathaxes/samples/lkm/ethernet.blt b/rathaxes/samples/lkm/ethernet.blt
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87 --- a/rathaxes/samples/lkm/ethernet.blt
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88 +++ b/rathaxes/samples/lkm/ethernet.blt
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89 @@ -18,8 +18,11 @@
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90 * I think it's useless to use the ${PCI::Device} "abstraction"
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91 * here, since we are already in a Linux specific context here.
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92 */
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93 - struct pci_dev *pci_dev;
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94 - struct net_device *net_dev;
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95 + struct pci_dev *pci_dev;
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96 + struct net_device *net_dev;
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97 +
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98 + /* while waiting on issue #8 */
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99 + struct rtx_e1000_ctx hw_ctx;
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100 };
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101 }
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102
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103 @@ -51,6 +54,24 @@
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104 }
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105 }
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106
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107 + template sequence Ethernet::send(Ethernet::Device dev, Socket::SKBuff skb)
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108 + {
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109 + chunk LKM::prototypes()
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110 + {
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111 + static int rtx_ethernet_xmit(struct sk_buff* skb, struct net_device *dev);
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112 + }
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113 +
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114 + chunk LKM::code()
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115 + {
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116 + static int rtx_ethernet_xmit(struct sk_buff* skb, struct net_device *dev)
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117 + {
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118 + ${pointcut ::IMPLEMENTATION};
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119 +
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120 + return 0;
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121 + }
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122 + }
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123 + }
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124 +
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125 template sequence Ethernet::close(Ethernet::Device dev)
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126 {
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127 chunk LKM::prototypes()
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129 {
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130 .ndo_open = rtx_ethernet_open,
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131 .ndo_stop = rtx_ethernet_close,
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132 - .ndo_start_xmit = NULL,
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133 + .ndo_start_xmit = rtx_ethernet_xmit,
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134 };
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135 }
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136
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137 diff --git a/rathaxes/samples/lkm/ethernet.rti b/rathaxes/samples/lkm/ethernet.rti
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138 --- a/rathaxes/samples/lkm/ethernet.rti
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139 +++ b/rathaxes/samples/lkm/ethernet.rti
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140 @@ -1,4 +1,4 @@
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141 -interface Ethernet : PCI, LKM
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142 +interface Ethernet : Socket, PCI, LKM
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143 {
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144 provided type Ethernet::Device;
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145
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146 @@ -10,6 +10,12 @@
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147 provided chunk LKM::code;
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148 }
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149
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150 + required sequence Ethernet::send(Ethernet::Device dev, Socket::SKBuff skb)
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151 + {
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152 + provided chunk LKM::prototypes;
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153 + provided chunk LKM::code;
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154 + }
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155 +
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156 required sequence Ethernet::close(Ethernet::Device)
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157 {
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158 provided chunk LKM::prototypes;
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159 diff --git a/rathaxes/samples/lkm/lkm.rtx b/rathaxes/samples/lkm/lkm.rtx
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160 --- a/rathaxes/samples/lkm/lkm.rtx
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161 +++ b/rathaxes/samples/lkm/lkm.rtx
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162 @@ -15,10 +15,16 @@
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163 Log::info("Got an interruption");
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164 }
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165
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166 + Ethernet::send(Ethernet::Device dev, Socket::SKBuff skb)
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167 + {
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168 + Log::info("We have one packet to transmit!");
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169 + }
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170 +
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171 PCI::probe(PCI::Device dev)
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172 {
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173 Log::info("Probe the device");
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174 Ethernet::init(dev);
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175 + e1000::create();
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176 }
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177
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178 PCI::remove(PCI::Device dev)
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179 @@ -49,6 +55,7 @@
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180
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181 PCI::vendor_id = 0x8086;
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182 PCI::product_id = 0x100f;
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183 + PCI::set_master = true;
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184
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185 Ethernet::ifname = "rtx%d";
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186 }
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187 diff --git a/rathaxes/samples/lkm/socket.blt b/rathaxes/samples/lkm/socket.blt
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188 new file mode 100644
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189 --- /dev/null
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190 +++ b/rathaxes/samples/lkm/socket.blt
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191 @@ -0,0 +1,27 @@
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192 +with Socket, LKM
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193 +{
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194 + template type Socket::SKBuff()
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195 + {
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196 + chunk LKM::includes()
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197 + {
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198 + #include <linux/sk_buff.h>
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199 + }
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200 +
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201 + chunk ::decl()
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202 + {
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203 + struct sk_buff;
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204 + }
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205 +
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206 + chunk ::init()
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207 + {
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208 + }
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209 +
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210 + map
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211 + {
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212 + // some work may have to be done here in order
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213 + // to access to some field of the sk_buff.
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214 + // We should determine if all the sk_buff managment
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215 + // can be abstracted from the user.
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216 + }
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217 + }
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218 +}
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219 diff --git a/rathaxes/samples/lkm/socket.rti b/rathaxes/samples/lkm/socket.rti
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220 new file mode 100644
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221 --- /dev/null
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222 +++ b/rathaxes/samples/lkm/socket.rti
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223 @@ -0,0 +1,4 @@
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224 +interface Socket : LKM
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225 +{
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226 + provided type Socket::SKBuff;
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227 +}