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annotate rathaxes_start_to_implement_sk_buff_in_the_lkm.patch @ 23:f0ab7ee21dd8

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Merge
author Louis Opter <kalessin@kalessin.fr>
date Sat, 07 Jan 2012 19:28:54 +0100
parents 65523c345b40
children 60dd543b67b0
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1 # HG changeset patch
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2 # Parent 7ed8c85f91b681a259ea6f7fcb39ec9ed4591a57
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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 +1,40 @@
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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 *bar;
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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 + {
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57 + ${Log::info("e1000::create: pci_enable_device_mem failed")};
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58 + }
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59 + }
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60 + }
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61 +}
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62 diff --git a/rathaxes/samples/lkm/e1000.rti b/rathaxes/samples/lkm/e1000.rti
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63 new file mode 100644
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64 --- /dev/null
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65 +++ b/rathaxes/samples/lkm/e1000.rti
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66 @@ -0,0 +1,10 @@
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67 +interface e1000 : Socket, Ethernet, PCI, LKM
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68 +{
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69 + provided type e1000::Context;
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70 +
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71 + /* Not sure if we need the argument */
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72 + provided sequence e1000::create()
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73 + {
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74 + provided chunk ::CALL;
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75 + }
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76 +}
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77 diff --git a/rathaxes/samples/lkm/ethernet.blt b/rathaxes/samples/lkm/ethernet.blt
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78 --- a/rathaxes/samples/lkm/ethernet.blt
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79 +++ b/rathaxes/samples/lkm/ethernet.blt
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81 -with Ethernet, PCI, LKM
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82 +with Ethernet, Socket, PCI, LKM
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83 {
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84 template type Ethernet::Device()
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85 {
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86 @@ -18,8 +18,11 @@
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87 * I think it's useless to use the ${PCI::Device} "abstraction"
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88 * here, since we are already in a Linux specific context here.
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89 */
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90 - struct pci_dev *pci_dev;
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91 - struct net_device *net_dev;
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92 + struct pci_dev *pci_dev;
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93 + struct net_device *net_dev;
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94 +
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95 + /* while waiting on issue #8 */
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96 + struct rtx_e1000_ctx hw_ctx;
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97 };
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98 }
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99
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100 @@ -51,6 +54,24 @@
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101 }
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102 }
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103
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104 + template sequence Ethernet::send(Ethernet::Device dev, Socket::SKBuff skb)
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105 + {
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106 + chunk LKM::prototypes()
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107 + {
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108 + static int rtx_ethernet_xmit(struct sk_buff* skb, struct net_device *dev);
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109 + }
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110 +
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111 + chunk LKM::code()
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112 + {
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113 + static int rtx_ethernet_xmit(struct sk_buff* skb, struct net_device *dev)
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114 + {
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115 + ${pointcut ::IMPLEMENTATION};
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116 +
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117 + return 0;
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118 + }
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119 + }
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120 + }
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121 +
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122 template sequence Ethernet::close(Ethernet::Device dev)
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123 {
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124 chunk LKM::prototypes()
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126 {
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127 .ndo_open = rtx_ethernet_open,
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128 .ndo_stop = rtx_ethernet_close,
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129 - .ndo_start_xmit = NULL,
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130 + .ndo_start_xmit = rtx_ethernet_xmit,
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131 };
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132 }
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133
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134 diff --git a/rathaxes/samples/lkm/ethernet.rti b/rathaxes/samples/lkm/ethernet.rti
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135 --- a/rathaxes/samples/lkm/ethernet.rti
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136 +++ b/rathaxes/samples/lkm/ethernet.rti
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137 @@ -1,4 +1,4 @@
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138 -interface Ethernet : PCI, LKM
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139 +interface Ethernet : Socket, PCI, LKM
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140 {
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141 provided type Ethernet::Device;
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142
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143 @@ -10,6 +10,12 @@
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144 provided chunk LKM::code;
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145 }
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146
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147 + required sequence Ethernet::send(Ethernet::Device dev, Socket::SKBuff skb)
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148 + {
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149 + provided chunk LKM::prototypes;
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150 + provided chunk LKM::code;
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151 + }
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152 +
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153 required sequence Ethernet::close(Ethernet::Device)
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154 {
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155 provided chunk LKM::prototypes;
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156 diff --git a/rathaxes/samples/lkm/lkm.rtx b/rathaxes/samples/lkm/lkm.rtx
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157 --- a/rathaxes/samples/lkm/lkm.rtx
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158 +++ b/rathaxes/samples/lkm/lkm.rtx
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159 @@ -15,10 +15,16 @@
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160 Log::info("Got an interruption");
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161 }
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162
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163 + Ethernet::send(Ethernet::Device dev, Socket::SKBuff skb)
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164 + {
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165 + Log::info("We have one packet to transmit!");
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166 + }
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167 +
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168 PCI::probe(PCI::Device dev)
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169 {
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170 Log::info("Probe the device");
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171 Ethernet::init(dev);
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172 + e1000::create();
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173 }
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174
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175 PCI::remove(PCI::Device dev)
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176 diff --git a/rathaxes/samples/lkm/socket.blt b/rathaxes/samples/lkm/socket.blt
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177 new file mode 100644
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178 --- /dev/null
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179 +++ b/rathaxes/samples/lkm/socket.blt
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180 @@ -0,0 +1,27 @@
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181 +with Socket, LKM
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182 +{
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183 + template type Socket::SKBuff()
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184 + {
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185 + chunk LKM::includes()
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186 + {
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187 + #include <linux/sk_buff.h>
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188 + }
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189 +
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190 + chunk ::decl()
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191 + {
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192 + struct sk_buff;
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193 + }
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194 +
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195 + chunk ::init()
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196 + {
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197 + }
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198 +
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199 + map
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200 + {
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201 + // some work may have to be done here in order
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202 + // to access to some field of the sk_buff.
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203 + // We should determine if all the sk_buff managment
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204 + // can be abstracted from the user.
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205 + }
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206 + }
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207 +}
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208 diff --git a/rathaxes/samples/lkm/socket.rti b/rathaxes/samples/lkm/socket.rti
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209 new file mode 100644
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210 --- /dev/null
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211 +++ b/rathaxes/samples/lkm/socket.rti
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212 @@ -0,0 +1,4 @@
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213 +interface Socket : LKM
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214 +{
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215 + provided type Socket::SKBuff;
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216 +}