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Rev | Author | Line No. | Line |
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3545 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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10051 | ace_dent | 3 | ;; Copyright (C) KolibriOS team 2012-2024. All rights reserved. ;; |
3545 | hidnplayr | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;; IPv6.INC ;; |
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7 | ;; ;; |
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8 | ;; Part of the tcp/ip network stack 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 | |||
18 | struct IPv6_header |
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19 | |||
20 | VersionTrafficFlow dd ? ; Version[0-3], Traffic class[4-11], Flow Label [12-31] |
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21 | PayloadLength dw ? ; 16 bits, unsigned length of payload (extension headers are part of this) |
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22 | NextHeader db ? ; Values are same as in IPv4 'Protocol' field |
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23 | HopLimit db ? ; Decremented by every node, packet is discarded when it reaches 0 |
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24 | SourceAddress rd 4 ; 128-bit addresses |
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25 | DestinationAddress rd 4 ; |
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26 | Payload rb 0 |
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27 | |||
28 | ends |
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29 | |||
30 | |||
3698 | hidnplayr | 31 | uglobal |
3545 | hidnplayr | 32 | align 4 |
33 | |||
34 | IPv6: |
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3600 | hidnplayr | 35 | .addresses rd 4*NET_DEVICES_MAX |
36 | .subnet rd 4*NET_DEVICES_MAX |
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37 | .dns rd 4*NET_DEVICES_MAX |
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38 | .gateway rd 4*NET_DEVICES_MAX |
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3545 | hidnplayr | 39 | |
3600 | hidnplayr | 40 | .packets_tx rd NET_DEVICES_MAX |
41 | .packets_rx rd NET_DEVICES_MAX |
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3545 | hidnplayr | 42 | |
43 | endg |
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44 | |||
45 | |||
6011 | hidnplayr | 46 | ;-----------------------------------------------------------------; |
47 | ; ; |
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48 | ; ipv6_init: Resets all IPv6 variables ; |
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49 | ; ; |
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50 | ;-----------------------------------------------------------------; |
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51 | macro ipv6_init { |
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3545 | hidnplayr | 52 | |
53 | xor eax, eax |
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54 | mov edi, IPv6 |
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55 | mov ecx, (4*4*4+2*4)MAX_IP |
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3711 | clevermous | 56 | rep stosd |
3545 | hidnplayr | 57 | |
58 | } |
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59 | |||
60 | |||
61 | |||
6011 | hidnplayr | 62 | ;-----------------------------------------------------------------; |
63 | ; ; |
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10058 | ace_dent | 64 | ; ipv6_input: Check the IPv6 Packet is not damaged and call ; |
6011 | hidnplayr | 65 | ; appropriate handler. (TCP/UDP/ICMP/..) ; |
66 | ; We will also re-construct fragmented packets ; |
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67 | ; ; |
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68 | ; IN: [esp] = ptr to buffer ; |
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69 | ; [esp+4] = size of buffer ; |
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70 | ; ebx = ptr to device struct ; |
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71 | ; edx = ptr to IPv6 header ; |
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72 | ; ecx = size of IPv6 packet ; |
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73 | ; ; |
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74 | ; OUT: / ; |
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75 | ; ; |
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76 | ;-----------------------------------------------------------------; |
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3545 | hidnplayr | 77 | align 4 |
6011 | hidnplayr | 78 | ipv6_input: |
3545 | hidnplayr | 79 | |
3556 | hidnplayr | 80 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input from: %x%x:%x%x:%x%x:%x%x:%x%x:%x%x:%x%x:%x%x\n",\ |
3545 | hidnplayr | 81 | [edx + IPv6_header.SourceAddress + 0]:2,[edx + IPv6_header.SourceAddress + 1]:2,\ |
82 | [edx + IPv6_header.SourceAddress + 2]:2,[edx + IPv6_header.SourceAddress + 3]:2,\ |
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83 | [edx + IPv6_header.SourceAddress + 4]:2,[edx + IPv6_header.SourceAddress + 5]:2,\ |
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84 | [edx + IPv6_header.SourceAddress + 6]:2,[edx + IPv6_header.SourceAddress + 7]:2,\ |
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85 | [edx + IPv6_header.SourceAddress + 8]:2,[edx + IPv6_header.SourceAddress + 9]:2,\ |
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86 | [edx + IPv6_header.SourceAddress + 10]:2,[edx + IPv6_header.SourceAddress + 11]:2,\ |
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87 | [edx + IPv6_header.SourceAddress + 12]:2,[edx + IPv6_header.SourceAddress + 13]:2,\ |
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88 | [edx + IPv6_header.SourceAddress + 14]:2,[edx + IPv6_header.SourceAddress + 15]:2 |
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89 | |||
3556 | hidnplayr | 90 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input to: %x%x:%x%x:%x%x:%x%x:%x%x:%x%x:%x%x:%x%x\n",\ |
3545 | hidnplayr | 91 | [edx + IPv6_header.DestinationAddress + 0]:2,[edx + IPv6_header.DestinationAddress + 1]:2,\ |
92 | [edx + IPv6_header.DestinationAddress + 2]:2,[edx + IPv6_header.DestinationAddress + 3]:2,\ |
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93 | [edx + IPv6_header.DestinationAddress + 4]:2,[edx + IPv6_header.DestinationAddress + 5]:2,\ |
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94 | [edx + IPv6_header.DestinationAddress + 6]:2,[edx + IPv6_header.DestinationAddress + 7]:2,\ |
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95 | [edx + IPv6_header.DestinationAddress + 8]:2,[edx + IPv6_header.DestinationAddress + 9]:2,\ |
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96 | [edx + IPv6_header.DestinationAddress + 10]:2,[edx + IPv6_header.DestinationAddress + 11]:2,\ |
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97 | [edx + IPv6_header.DestinationAddress + 12]:2,[edx + IPv6_header.DestinationAddress + 13]:2,\ |
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98 | [edx + IPv6_header.DestinationAddress + 14]:2,[edx + IPv6_header.DestinationAddress + 15]:2 |
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99 | |||
100 | sub ecx, sizeof.IPv6_header |
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101 | jb .dump |
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102 | |||
103 | cmp cx, [edx + IPv6_header.PayloadLength] |
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104 | jb .dump |
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105 | |||
106 | ;------------------------------------------------------------------- |
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107 | ; No, it's just a regular IP packet, pass it to the higher protocols |
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108 | |||
109 | .handle_it: |
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110 | movzx ecx, [edx + IPv6_header.PayloadLength] |
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111 | lea edi, [edx + IPv6_header.SourceAddress] ; make edi ptr to source and dest IPv6 address |
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112 | lea esi, [edx + IPv6_header.Payload] ; make esi ptr to data |
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113 | mov al, [edx + IPv6_header.NextHeader] |
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114 | |||
115 | .scan: |
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116 | cmp al, 59 ; no next |
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117 | je .dump |
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118 | |||
119 | cmp al, 0 |
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120 | je .hop_by_hop |
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121 | |||
122 | cmp al, 43 |
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123 | je .routing |
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124 | |||
125 | cmp al, 44 |
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126 | je .fragment |
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127 | |||
128 | cmp al, 60 |
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129 | je .dest_opts |
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130 | |||
131 | ; cmp al, IP_PROTO_TCP |
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132 | ; je TCP_input |
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133 | |||
134 | ; cmp al, IP_PROTO_UDP |
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135 | ; je UDP_input |
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136 | |||
137 | ; cmp al, 58 |
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138 | ; je ICMP6_input |
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139 | |||
3556 | hidnplayr | 140 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - unknown protocol: %u\n", al |
3545 | hidnplayr | 141 | |
142 | .dump: |
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3556 | hidnplayr | 143 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - dumping\n" |
6011 | hidnplayr | 144 | call net_buff_free |
3545 | hidnplayr | 145 | ret |
146 | |||
147 | .dump_options: |
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148 | add esp, 2+4+4 |
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149 | jmp .dump |
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150 | |||
151 | .nextheader: |
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152 | pop esi |
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153 | pop ecx |
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154 | pop ax |
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155 | jmp .scan |
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156 | |||
157 | ;------------------------- |
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158 | ; Hop-by-Hop |
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159 | |||
160 | .hop_by_hop: |
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3556 | hidnplayr | 161 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - hop by hop\n" |
3545 | hidnplayr | 162 | pushw [esi] ; 8 bit identifier for option type |
163 | movzx eax, byte[esi + 1] ; Hdr Ext Len |
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164 | inc eax ; first 8 octets not counted |
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165 | shl eax, 3 ; * 8 |
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166 | sub ecx, eax |
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167 | push ecx |
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168 | add eax, esi |
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169 | push eax |
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170 | inc esi |
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171 | inc esi |
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172 | |||
173 | mov al, [esi] |
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174 | |||
175 | cmp al, 0 |
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176 | je .pad_1 |
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177 | |||
178 | cmp al, 1 |
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179 | je .pad_n |
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180 | |||
181 | ; TODO: check with other known options |
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182 | |||
183 | ; unknown option.. discard packet or not? |
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184 | ; check highest two bits |
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185 | test al, 0xc0 ; discard packet |
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186 | jnz .dump_options |
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187 | |||
188 | .pad_n: |
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189 | movzx eax, byte[esi + 1] |
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3556 | hidnplayr | 190 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - pad %u\n", eax |
3545 | hidnplayr | 191 | inc esi |
192 | inc esi |
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193 | add esi, eax |
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194 | sub ecx, eax |
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195 | jmp .hop_by_hop |
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196 | |||
197 | .pad_1: |
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3556 | hidnplayr | 198 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - pad 1\n" |
3545 | hidnplayr | 199 | inc esi |
200 | dec ecx |
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201 | jmp .hop_by_hop |
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202 | |||
203 | |||
204 | |||
205 | .dest_opts: |
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3556 | hidnplayr | 206 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - dest opts\n" |
3545 | hidnplayr | 207 | jmp .nextheader |
208 | |||
209 | .routing: |
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3556 | hidnplayr | 210 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - routing\n" |
3545 | hidnplayr | 211 | pushw [esi] ; 8 bit identifier for option type |
212 | movzx eax, byte[esi + 1] ; Hdr Ext Len |
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213 | inc eax ; first 8 octets not counted |
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214 | shl eax, 3 ; * 8 |
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215 | sub ecx, eax |
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216 | push ecx |
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217 | add eax, esi |
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218 | push eax |
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219 | inc esi |
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220 | inc esi |
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221 | |||
222 | cmp al, 0 |
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223 | je .pad_1 |
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224 | |||
225 | cmp al, 1 |
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226 | je .pad_n |
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227 | |||
228 | mov al, [esi] ; routing type |
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229 | |||
230 | jmp .nextheader |
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231 | |||
232 | .fragment: |
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3556 | hidnplayr | 233 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - fragment\n" |
3545 | hidnplayr | 234 | |
235 | jmp .nextheader |
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236 | |||
237 | |||
238 | |||
239 | |||
240 | |||
241 | |||
6011 | hidnplayr | 242 | ;-----------------------------------------------------------------; |
243 | ; ; |
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244 | ; ipv6_api: Part of system function 76 ; |
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245 | ; ; |
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246 | ; IN: bl = subfunction number ; |
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247 | ; bh = device number ; |
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248 | ; ecx, edx, .. depends on subfunction ; |
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249 | ; ; |
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250 | ; OUT: depends on subfunction ; |
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251 | ; ; |
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252 | ;-----------------------------------------------------------------; |
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3545 | hidnplayr | 253 | align 4 |
6011 | hidnplayr | 254 | ipv6_api: |
3545 | hidnplayr | 255 | |
256 | movzx eax, bh |
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257 | shl eax, 2 |
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258 | |||
259 | and ebx, 0x000000ff |
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260 | cmp ebx, .number |
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261 | ja .error |
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262 | jmp dword [.table + 4*ebx] |
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263 | |||
264 | .table: |
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265 | dd .packets_tx ; 0 |
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266 | dd .packets_rx ; 1 |
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267 | ; dd .read_ip ; 2 |
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268 | ; dd .write_ip ; 3 |
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269 | ; dd .read_dns ; 4 |
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270 | ; dd .write_dns ; 5 |
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271 | ; dd .read_subnet ; 6 |
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272 | ; dd .write_subnet ; 7 |
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273 | ; dd .read_gateway ; 8 |
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274 | ; dd .write_gateway ; 9 |
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275 | .number = ($ - .table) / 4 - 1 |
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276 | |||
277 | .error: |
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278 | mov eax, -1 |
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279 | ret |
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280 | |||
281 | .packets_tx: |
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282 | mov eax, [IPv6.packets_tx + eax] |
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283 | ret |
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284 | |||
285 | .packets_rx: |
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286 | mov eax, [IPv6.packets_rx + eax] |
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287 | ret |