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1159 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;; ETHERNET.INC ;; |
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7 | ;; ;; |
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8 | ;; Ethernet network layer for KolibriOS ;; |
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9 | ;; ;; |
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10 | ;; Written by hidnplayr@kolibrios.org ;; |
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11 | ;; ;; |
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12 | ;; GNU GENERAL PUBLIC LICENSE ;; |
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13 | ;; Version 2, June 1991 ;; |
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14 | ;; ;; |
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15 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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16 | |||
17 | $Revision: 983 $ |
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18 | |||
19 | MAX_ETH_DEVICES equ MAX_NET_DEVICES |
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20 | ETH_QUEUE_SIZE equ 16 |
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21 | |||
22 | struct ETH_FRAME |
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23 | .DstMAC dp ? ; destination MAC-address [6 bytes] |
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24 | .SrcMAC dp ? ; source MAC-address [6 bytes] |
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25 | .Type dw ? ; type of the upper-layer protocol [2 bytes] |
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26 | .Data: ; data [46-1500 bytes] |
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27 | ends |
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28 | |||
29 | struct ETH_DEVICE |
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30 | .unload dd ? |
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31 | .reset dd ? |
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32 | .transmit dd ? |
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33 | .set_MAC dd ? |
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34 | .get_MAC dd ? |
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35 | .set_mode dd ? |
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36 | .get_mode dd ? |
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37 | |||
38 | .bytes_tx dq ? |
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39 | .bytes_rx dq ? |
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40 | .packets_tx dd ? |
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41 | .packets_rx dd ? |
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42 | .mode dd ? ; This dword contains cable status (10mbit/100mbit, full/half duplex, auto negotiation or not,..) |
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43 | .name dd ? |
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44 | .mac dp ? |
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45 | ends ; the rest of the device struct depends on the type of device |
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46 | |||
47 | |||
48 | align 4 |
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49 | uglobal |
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50 | |||
51 | ETH_RUNNING dd ? |
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52 | ETH_DRV_LIST rd MAX_ETH_DEVICES |
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53 | ETH_IN_QUEUE rd 3*ETH_QUEUE_SIZE+3 |
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54 | ETH_OUT_QUEUE rd 3*ETH_QUEUE_SIZE+3 |
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55 | endg |
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56 | |||
57 | |||
58 | ;----------------------------------------------- |
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59 | ; |
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60 | ; ETH_init |
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61 | ; |
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62 | ; This function resets all ethernet variables |
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63 | ; |
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64 | ; IN: / |
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65 | ; OUT: / |
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66 | ; |
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67 | ;----------------------------------------------- |
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68 | |||
69 | align 4 |
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70 | ETH_init: |
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71 | |||
72 | xor eax, eax |
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73 | mov edi, ETH_RUNNING |
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74 | mov ecx, (1+MAX_ETH_DEVICES) |
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75 | rep stosd |
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76 | |||
77 | mov dword [ETH_IN_QUEUE], eax |
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78 | mov dword [ETH_IN_QUEUE+4], ETH_IN_QUEUE + queue.data |
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79 | mov dword [ETH_IN_QUEUE+8], ETH_IN_QUEUE + queue.data |
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80 | |||
81 | mov dword [ETH_OUT_QUEUE], eax |
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82 | mov dword [ETH_OUT_QUEUE+4], ETH_OUT_QUEUE + queue.data |
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83 | mov dword [ETH_OUT_QUEUE+8], ETH_OUT_QUEUE + queue.data |
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84 | |||
85 | ret |
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86 | |||
87 | |||
88 | |||
89 | ;--------------------------------------------------------- |
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90 | ; |
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91 | ; ETH_Add_Device: |
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92 | ; |
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93 | ; This function is called by ethernet drivers, |
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94 | ; to register each running ethernet device to the kernel |
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95 | ; |
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96 | ; IN: Pointer to device structure in ebx |
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97 | ; OUT: Device num in eax, -1 on error |
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98 | ; |
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99 | ;--------------------------------------------------------- |
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100 | |||
101 | align 4 |
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102 | ETH_Add_Device: |
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103 | |||
104 | DEBUGF 1,"ETH_Add_Device: %x\n", ebx |
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105 | cmp [ETH_RUNNING], MAX_ETH_DEVICES |
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106 | jge .error |
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107 | |||
108 | mov eax, ebx |
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109 | mov ecx, MAX_ETH_DEVICES ; We need to check whole list because a device may be removed without re-organizing list |
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110 | mov edi, ETH_DRV_LIST |
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111 | |||
112 | cld |
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113 | repne scasd ; See if device is already in the list |
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114 | jz .error |
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115 | |||
116 | xor eax, eax |
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117 | mov ecx, MAX_ETH_DEVICES |
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118 | mov edi, ETH_DRV_LIST |
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119 | |||
120 | repne scasd ; Find empty spot in the list |
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121 | jnz .error |
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122 | |||
123 | sub edi, 4 |
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124 | mov [edi], ebx ; add device to list |
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125 | |||
126 | sub edi, ETH_DRV_LIST ; edi = 4*device num Calculate device number in eax |
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127 | mov eax, edi ; edx = 4*device num |
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128 | shr eax, 2 |
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129 | |||
130 | ; shr eax, 1 ; edx = 2*device num |
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131 | ; add edi, eax ; edi = 6*device_num Meanwhile, calculate MAC offset in edi |
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132 | ; shr eax, 1 ; edx = device num |
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133 | ; add edi, MAC_LIST ; edi = MAC_LIST+6*device_num |
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134 | ; push eax |
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135 | |||
136 | ; push edi |
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137 | ; call [ebx+ETH_DEVICE.get_MAC] ; Get MAC address from driver |
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138 | ; pop edi |
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139 | ; |
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140 | ; stosd ; Write MAC address to the MAC list |
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141 | ; mov ax, bx ; |
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142 | ; stosw ; |
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143 | |||
144 | inc [ETH_RUNNING] ; Indicate that one more ethernet device is up and running |
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145 | ; pop eax ; Output device num in eax |
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146 | DEBUGF 1,"- succes: %u\n",eax |
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147 | ret |
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148 | |||
149 | .error: |
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150 | or eax, -1 |
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151 | DEBUGF 1,"- fail\n" |
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152 | |||
153 | ret |
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154 | |||
155 | |||
156 | |||
157 | |||
158 | ;-------------------------------- |
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159 | ; |
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160 | ; ETH_Remove_Device: |
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161 | ; |
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162 | ; This function is called by ethernet drivers, |
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163 | ; to unregister ethernet devices from the kernel |
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164 | ; |
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165 | ; IN: Pointer to device structure in ebx |
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166 | ; OUT: eax: -1 on error |
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167 | ; |
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168 | ;-------------------------------- |
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169 | |||
170 | align 4 |
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171 | ETH_Remove_Device: |
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172 | |||
173 | cmp [ETH_RUNNING], 0 |
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174 | je .error |
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175 | |||
176 | mov eax, ebx |
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177 | mov ecx, MAX_ETH_DEVICES |
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178 | mov edi, ETH_DRV_LIST |
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179 | |||
180 | repne scasd |
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181 | jnz .error |
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182 | |||
183 | xor eax, eax |
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184 | mov dword [edi-4], eax |
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185 | |||
186 | dec [ETH_RUNNING] |
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187 | |||
188 | ret |
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189 | |||
190 | .error: |
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191 | or eax, -1 |
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192 | |||
193 | ret |
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194 | |||
195 | |||
196 | |||
197 | ;------------------------------------------------------------- |
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198 | ; |
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199 | ; ETH_Receiver: |
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200 | ; |
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201 | ; This function is called by ethernet drivers, |
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202 | ; It pushes the received ethernet packets onto the eth_in_queue |
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203 | ; |
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204 | ; IN: Pointer to buffer in [esp], size of buffer in [esp-4], pointer to eth_device in ebx |
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205 | ; OUT: / |
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206 | ; |
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207 | ;------------------------------------------------------------- |
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208 | |||
209 | align 4 |
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210 | ETH_Receiver: |
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211 | DEBUGF 1,"ETH_Receiver \n" |
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212 | |||
213 | add_to_queue ETH_IN_QUEUE, ETH_QUEUE_SIZE, .gohome |
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214 | |||
215 | .gohome: |
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216 | ret |
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217 | |||
218 | |||
219 | |||
220 | |||
221 | |||
222 | ;------------------------------------------------------------- |
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223 | ; |
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224 | ; ETH_Handler: |
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225 | ; |
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226 | ; Handles all queued eth packets (called from kernel's main_loop) |
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227 | ; |
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228 | ; IN: / |
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229 | ; OUT: / |
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230 | ; |
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231 | ;------------------------------------------------------------- |
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232 | |||
233 | align 4 |
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234 | ETH_Handler: |
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235 | |||
236 | get_from_queue ETH_IN_QUEUE, ETH_QUEUE_SIZE, .gohome |
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237 | |||
238 | DEBUGF 1,"ETH_Handler - size: %u\n", ecx |
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239 | cmp ecx, 60 ; check packet length |
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240 | jl .dump |
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241 | sub ecx, ETH_FRAME.Data |
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242 | |||
243 | lea edx, [eax + ETH_FRAME.Data] |
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244 | mov ax , [eax + ETH_FRAME.Type] |
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245 | |||
246 | cmp ax, ETHER_IPv4 |
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247 | je IPv4_Handler |
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248 | |||
249 | cmp ax, ETHER_ARP |
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250 | je ARP_Handler |
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251 | |||
252 | DEBUGF 1,"Unknown ethernet packet type %x\n", ax |
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253 | |||
254 | .dump: |
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255 | DEBUGF 1,"Dumping packet\n" |
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256 | call kernel_free |
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257 | add esp, 4 |
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258 | |||
259 | .gohome: |
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260 | ret ; return 1. to get more from queue / 2. to caller |
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261 | |||
262 | |||
263 | |||
264 | ;----------------------------------------------------------------- |
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265 | ; |
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266 | ; ETH_Sender: |
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267 | ; |
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268 | ; This function sends an ethernet packet to the correct driver. |
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269 | ; |
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270 | ; IN: Pointer to buffer in [esp] |
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271 | ; size of buffer in [esp+4] |
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272 | ; pointer to device struct in ebx |
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273 | ; OUT: / |
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274 | ; |
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275 | ;----------------------------------------------------------------- |
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276 | |||
277 | align 4 |
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278 | ETH_Sender: |
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279 | DEBUGF 1,"ETH_Sender \n" |
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280 | |||
281 | add_to_queue ETH_OUT_QUEUE, ETH_QUEUE_SIZE, .gohome |
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282 | |||
283 | .gohome: |
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284 | ret |
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285 | |||
286 | |||
287 | align 4 |
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288 | ETH_send_queued: |
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289 | |||
290 | get_from_queue ETH_OUT_QUEUE, ETH_QUEUE_SIZE, .gohome |
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291 | |||
292 | call ETH_struc2dev ; convert struct ptr to device num (this way we know if driver is still mounted) |
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293 | cmp edi, -1 |
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294 | je .fail |
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295 | |||
296 | DEBUGF 1,"ETH_Sender - device: %u\n", edi |
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297 | |||
298 | jmp [ebx+ETH_DEVICE.transmit] |
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299 | |||
300 | .fail: |
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301 | call kernel_free |
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302 | add esp, 4 ; pop (balance stack) |
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303 | DEBUGF 1,"ETH_Sender - fail\n" |
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304 | .gohome: |
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305 | ret |
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306 | |||
307 | ;--------------------------------------------------------------------------- |
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308 | ; |
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309 | ; ETH_struc2dev |
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310 | ; |
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311 | ; IN: pointer to device struct in ebx |
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312 | ; |
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313 | ; OUT: edi is -1 on error, device number otherwise |
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314 | ; |
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315 | ;--------------------------------------------------------------------------- |
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316 | |||
317 | align 4 |
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318 | ETH_struc2dev: |
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319 | push eax ecx |
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320 | |||
321 | mov eax, ebx |
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322 | mov ecx, MAX_ETH_DEVICES |
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323 | mov edi, ETH_DRV_LIST |
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324 | |||
325 | repne scasd |
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326 | jnz .error |
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327 | |||
328 | sub edi, ETH_DRV_LIST+4 |
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329 | shr edi, 2 |
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330 | |||
331 | pop ecx eax |
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332 | ret |
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333 | .error: |
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334 | or edi, -1 |
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335 | pop ecx eax |
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336 | |||
337 | ret |
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338 | |||
339 | |||
340 | ;--------------------------------------------------------------------------- |
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341 | ; |
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342 | ; ETH_create_Packet |
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343 | ; |
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344 | ; IN: pointer to source mac in eax |
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345 | ; pointer to destination mac in ebx |
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346 | ; packet size in ecx |
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347 | ; device number in edx |
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348 | ; protocol in di |
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349 | ; |
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350 | ; OUT: edi is -1 on error, pointer to buffer otherwise ;; TODO: XCHG EDX AND EBX output parameters |
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351 | ; eax points to buffer start |
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352 | ; ebx is size of complete buffer |
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353 | ; ecx is unchanged (packet size of embedded data) |
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354 | ; edx is pointer to device structure |
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355 | ; esi points to procedure wich needs to be called to send packet |
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356 | ; |
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357 | ;--------------------------------------------------------------------------- |
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358 | |||
359 | align 4 |
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360 | ETH_create_Packet: |
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361 | |||
362 | DEBUGF 1,"Creating Ethernet Packet:\n" |
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363 | |||
364 | cmp ecx, 60-ETH_FRAME.Data |
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365 | jl .exit |
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366 | cmp ecx, 1514-ETH_FRAME.Data |
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367 | jg .exit |
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368 | |||
369 | push ecx di eax ebx edx |
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370 | |||
371 | add ecx, ETH_FRAME.Data |
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372 | push ecx |
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373 | push ecx |
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374 | call kernel_alloc |
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375 | test eax, eax |
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376 | jz .pop_exit |
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377 | |||
378 | pop ecx |
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379 | pop edx |
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380 | |||
381 | DEBUGF 1,"1" |
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382 | mov edi, eax |
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383 | pop esi |
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384 | movsd |
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385 | movsw |
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386 | DEBUGF 1,"2" |
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387 | pop esi |
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388 | movsd |
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389 | movsw |
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390 | DEBUGF 1,"3" |
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391 | pop ax |
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392 | stosw |
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393 | DEBUGF 1,"4" |
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394 | |||
395 | lea eax, [edi - ETH_FRAME.Data] ; Set eax to buffer start |
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396 | mov ebx, ecx ; Set ebx to complete buffer size |
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397 | pop ecx |
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398 | mov esi, ETH_Sender |
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399 | |||
400 | xor edx, edx ;;;; TODO: Fixme |
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401 | mov edx, [ETH_DRV_LIST + edx] |
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402 | |||
403 | DEBUGF 1,"done: %x size:%u device:%x\n", eax, ebx, edx |
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404 | ret |
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405 | |||
406 | .pop_exit: |
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407 | add esp, 18 |
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408 | .exit: |
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409 | or edi, -1 |
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410 | ret |
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411 | |||
412 | |||
413 | |||
414 | |||
415 | ;--------------------------------------------------------------------------- |
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416 | ; |
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417 | ; ETH_API |
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418 | ; |
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419 | ; This function is called by system function 75 |
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420 | ; |
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421 | ; IN: subfunction number in bl |
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422 | ; device number in bh |
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423 | ; ecx, edx, .. depends on subfunction |
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424 | ; |
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425 | ; OUT: |
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426 | ; |
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427 | ;--------------------------------------------------------------------------- |
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428 | |||
429 | align 4 |
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430 | ETH_API: |
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431 | |||
432 | movzx eax, bh |
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433 | shl eax, 2 |
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434 | |||
435 | test bl, bl |
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436 | jz .packets_tx ; 0 |
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437 | dec bl |
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438 | jz .packets_rx ; 1 |
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439 | dec bl |
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440 | jz .bytes_tx ; 2 |
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441 | dec bl |
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442 | jz .bytes_rx ; 3 |
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443 | dec bl |
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444 | jz .read_mac ; 4 |
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445 | dec bl |
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446 | jz .write_mac ; 5 |
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447 | dec bl |
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448 | jz .in_queue ; 6 |
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449 | dec bl |
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450 | jz .out_queue ; 7 |
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451 | |||
452 | .error: |
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453 | mov eax, -1 |
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454 | ret |
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455 | |||
456 | .packets_tx: |
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457 | add eax, ETH_DRV_LIST |
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1171 | hidnplayr | 458 | mov eax, dword [eax] |
459 | mov eax, dword [eax + ETH_DEVICE.packets_tx] |
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460 | |||
1159 | hidnplayr | 461 | ret |
462 | |||
463 | .packets_rx: |
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464 | add eax, ETH_DRV_LIST |
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1171 | hidnplayr | 465 | mov eax, dword [eax] |
466 | mov eax, dword [eax + ETH_DEVICE.packets_rx] |
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1159 | hidnplayr | 467 | ret |
468 | |||
469 | .bytes_tx: |
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470 | add eax, ETH_DRV_LIST |
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1171 | hidnplayr | 471 | mov eax, dword [eax] |
1159 | hidnplayr | 472 | mov eax, dword [eax + ETH_DEVICE.bytes_tx + 4] |
473 | ret |
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474 | |||
475 | .bytes_rx: |
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476 | add eax, ETH_DRV_LIST |
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1171 | hidnplayr | 477 | mov eax, dword [eax] |
1159 | hidnplayr | 478 | mov eax, dword [eax + ETH_DEVICE.bytes_rx + 4] |
479 | ret |
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480 | |||
481 | .read_mac: |
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482 | add eax, ETH_DRV_LIST |
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483 | mov eax, [eax] |
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484 | ; push eax |
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485 | ; call dword [eax + ETH_DEVICE.get_MAC] |
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486 | ; pop eax |
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487 | movzx ebx, word [eax + ETH_DEVICE.mac] |
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488 | mov eax, dword [eax + ETH_DEVICE.mac + 2] |
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1171 | hidnplayr | 489 | mov [esp+20+4], ebx ; TODO: fix this ugly code |
1159 | hidnplayr | 490 | ret |
491 | |||
492 | .write_mac: |
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493 | push ecx |
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494 | push dx |
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495 | add eax, ETH_DRV_LIST |
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496 | mov eax, [eax] |
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497 | mov eax, dword [eax + ETH_DEVICE.set_MAC] |
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498 | call eax |
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499 | ret |
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500 | |||
501 | .in_queue: |
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502 | add eax, ETH_IN_QUEUE |
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503 | mov eax, [eax + queue.size] |
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504 | ret |
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505 | |||
506 | .out_queue: |
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507 | add eax, ETH_OUT_QUEUE |
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508 | mov eax, [eax + queue.size] |
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509 | ret |