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Rev | Author | Line No. | Line |
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3545 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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5363 | yogev_ezra | 3 | ;; Copyright (C) KolibriOS team 2012-2015. 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 | |||
4850 | mario79 | 17 | $Revision: 6011 $ |
3545 | hidnplayr | 18 | |
19 | |||
20 | struct IPv6_header |
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21 | |||
22 | VersionTrafficFlow dd ? ; Version[0-3], Traffic class[4-11], Flow Label [12-31] |
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23 | PayloadLength dw ? ; 16 bits, unsigned length of payload (extension headers are part of this) |
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24 | NextHeader db ? ; Values are same as in IPv4 'Protocol' field |
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25 | HopLimit db ? ; Decremented by every node, packet is discarded when it reaches 0 |
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26 | SourceAddress rd 4 ; 128-bit addresses |
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27 | DestinationAddress rd 4 ; |
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28 | Payload rb 0 |
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29 | |||
30 | ends |
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31 | |||
32 | |||
3698 | hidnplayr | 33 | uglobal |
3545 | hidnplayr | 34 | align 4 |
35 | |||
36 | IPv6: |
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3600 | hidnplayr | 37 | .addresses rd 4*NET_DEVICES_MAX |
38 | .subnet rd 4*NET_DEVICES_MAX |
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39 | .dns rd 4*NET_DEVICES_MAX |
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40 | .gateway rd 4*NET_DEVICES_MAX |
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3545 | hidnplayr | 41 | |
3600 | hidnplayr | 42 | .packets_tx rd NET_DEVICES_MAX |
43 | .packets_rx rd NET_DEVICES_MAX |
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3545 | hidnplayr | 44 | |
45 | endg |
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46 | |||
47 | |||
6011 | hidnplayr | 48 | ;-----------------------------------------------------------------; |
49 | ; ; |
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50 | ; ipv6_init: Resets all IPv6 variables ; |
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51 | ; ; |
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52 | ;-----------------------------------------------------------------; |
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53 | macro ipv6_init { |
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3545 | hidnplayr | 54 | |
55 | xor eax, eax |
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56 | mov edi, IPv6 |
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57 | mov ecx, (4*4*4+2*4)MAX_IP |
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3711 | clevermous | 58 | rep stosd |
3545 | hidnplayr | 59 | |
60 | } |
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61 | |||
62 | |||
63 | |||
6011 | hidnplayr | 64 | ;-----------------------------------------------------------------; |
65 | ; ; |
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66 | ; ipv6_input: Check if IPv6 Packet isnt damaged and call ; |
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67 | ; appropriate handler. (TCP/UDP/ICMP/..) ; |
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68 | ; We will also re-construct fragmented packets ; |
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69 | ; ; |
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70 | ; IN: [esp] = ptr to buffer ; |
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71 | ; [esp+4] = size of buffer ; |
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72 | ; ebx = ptr to device struct ; |
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73 | ; edx = ptr to IPv6 header ; |
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74 | ; ecx = size of IPv6 packet ; |
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75 | ; ; |
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76 | ; OUT: / ; |
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77 | ; ; |
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78 | ;-----------------------------------------------------------------; |
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3545 | hidnplayr | 79 | align 4 |
6011 | hidnplayr | 80 | ipv6_input: |
3545 | hidnplayr | 81 | |
3556 | hidnplayr | 82 | 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 | 83 | [edx + IPv6_header.SourceAddress + 0]:2,[edx + IPv6_header.SourceAddress + 1]:2,\ |
84 | [edx + IPv6_header.SourceAddress + 2]:2,[edx + IPv6_header.SourceAddress + 3]:2,\ |
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85 | [edx + IPv6_header.SourceAddress + 4]:2,[edx + IPv6_header.SourceAddress + 5]:2,\ |
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86 | [edx + IPv6_header.SourceAddress + 6]:2,[edx + IPv6_header.SourceAddress + 7]:2,\ |
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87 | [edx + IPv6_header.SourceAddress + 8]:2,[edx + IPv6_header.SourceAddress + 9]:2,\ |
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88 | [edx + IPv6_header.SourceAddress + 10]:2,[edx + IPv6_header.SourceAddress + 11]:2,\ |
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89 | [edx + IPv6_header.SourceAddress + 12]:2,[edx + IPv6_header.SourceAddress + 13]:2,\ |
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90 | [edx + IPv6_header.SourceAddress + 14]:2,[edx + IPv6_header.SourceAddress + 15]:2 |
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91 | |||
3556 | hidnplayr | 92 | 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 | 93 | [edx + IPv6_header.DestinationAddress + 0]:2,[edx + IPv6_header.DestinationAddress + 1]:2,\ |
94 | [edx + IPv6_header.DestinationAddress + 2]:2,[edx + IPv6_header.DestinationAddress + 3]:2,\ |
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95 | [edx + IPv6_header.DestinationAddress + 4]:2,[edx + IPv6_header.DestinationAddress + 5]:2,\ |
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96 | [edx + IPv6_header.DestinationAddress + 6]:2,[edx + IPv6_header.DestinationAddress + 7]:2,\ |
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97 | [edx + IPv6_header.DestinationAddress + 8]:2,[edx + IPv6_header.DestinationAddress + 9]:2,\ |
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98 | [edx + IPv6_header.DestinationAddress + 10]:2,[edx + IPv6_header.DestinationAddress + 11]:2,\ |
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99 | [edx + IPv6_header.DestinationAddress + 12]:2,[edx + IPv6_header.DestinationAddress + 13]:2,\ |
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100 | [edx + IPv6_header.DestinationAddress + 14]:2,[edx + IPv6_header.DestinationAddress + 15]:2 |
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101 | |||
102 | sub ecx, sizeof.IPv6_header |
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103 | jb .dump |
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104 | |||
105 | cmp cx, [edx + IPv6_header.PayloadLength] |
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106 | jb .dump |
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107 | |||
108 | ;------------------------------------------------------------------- |
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109 | ; No, it's just a regular IP packet, pass it to the higher protocols |
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110 | |||
111 | .handle_it: |
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112 | movzx ecx, [edx + IPv6_header.PayloadLength] |
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113 | lea edi, [edx + IPv6_header.SourceAddress] ; make edi ptr to source and dest IPv6 address |
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114 | lea esi, [edx + IPv6_header.Payload] ; make esi ptr to data |
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115 | mov al, [edx + IPv6_header.NextHeader] |
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116 | |||
117 | .scan: |
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118 | cmp al, 59 ; no next |
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119 | je .dump |
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120 | |||
121 | cmp al, 0 |
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122 | je .hop_by_hop |
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123 | |||
124 | cmp al, 43 |
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125 | je .routing |
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126 | |||
127 | cmp al, 44 |
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128 | je .fragment |
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129 | |||
130 | cmp al, 60 |
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131 | je .dest_opts |
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132 | |||
133 | ; cmp al, IP_PROTO_TCP |
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134 | ; je TCP_input |
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135 | |||
136 | ; cmp al, IP_PROTO_UDP |
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137 | ; je UDP_input |
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138 | |||
139 | ; cmp al, 58 |
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140 | ; je ICMP6_input |
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141 | |||
3556 | hidnplayr | 142 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - unknown protocol: %u\n", al |
3545 | hidnplayr | 143 | |
144 | .dump: |
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3556 | hidnplayr | 145 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - dumping\n" |
6011 | hidnplayr | 146 | call net_buff_free |
3545 | hidnplayr | 147 | ret |
148 | |||
149 | .dump_options: |
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150 | add esp, 2+4+4 |
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151 | jmp .dump |
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152 | |||
153 | .nextheader: |
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154 | pop esi |
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155 | pop ecx |
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156 | pop ax |
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157 | jmp .scan |
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158 | |||
159 | ;------------------------- |
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160 | ; Hop-by-Hop |
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161 | |||
162 | .hop_by_hop: |
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3556 | hidnplayr | 163 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - hop by hop\n" |
3545 | hidnplayr | 164 | pushw [esi] ; 8 bit identifier for option type |
165 | movzx eax, byte[esi + 1] ; Hdr Ext Len |
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166 | inc eax ; first 8 octets not counted |
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167 | shl eax, 3 ; * 8 |
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168 | sub ecx, eax |
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169 | push ecx |
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170 | add eax, esi |
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171 | push eax |
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172 | inc esi |
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173 | inc esi |
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174 | |||
175 | mov al, [esi] |
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176 | |||
177 | cmp al, 0 |
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178 | je .pad_1 |
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179 | |||
180 | cmp al, 1 |
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181 | je .pad_n |
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182 | |||
183 | ; TODO: check with other known options |
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184 | |||
185 | ; unknown option.. discard packet or not? |
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186 | ; check highest two bits |
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187 | test al, 0xc0 ; discard packet |
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188 | jnz .dump_options |
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189 | |||
190 | .pad_n: |
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191 | movzx eax, byte[esi + 1] |
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3556 | hidnplayr | 192 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - pad %u\n", eax |
3545 | hidnplayr | 193 | inc esi |
194 | inc esi |
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195 | add esi, eax |
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196 | sub ecx, eax |
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197 | jmp .hop_by_hop |
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198 | |||
199 | .pad_1: |
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3556 | hidnplayr | 200 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - pad 1\n" |
3545 | hidnplayr | 201 | inc esi |
202 | dec ecx |
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203 | jmp .hop_by_hop |
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204 | |||
205 | |||
206 | |||
207 | .dest_opts: |
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3556 | hidnplayr | 208 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - dest opts\n" |
3545 | hidnplayr | 209 | jmp .nextheader |
210 | |||
211 | .routing: |
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3556 | hidnplayr | 212 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - routing\n" |
3545 | hidnplayr | 213 | pushw [esi] ; 8 bit identifier for option type |
214 | movzx eax, byte[esi + 1] ; Hdr Ext Len |
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215 | inc eax ; first 8 octets not counted |
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216 | shl eax, 3 ; * 8 |
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217 | sub ecx, eax |
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218 | push ecx |
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219 | add eax, esi |
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220 | push eax |
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221 | inc esi |
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222 | inc esi |
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223 | |||
224 | cmp al, 0 |
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225 | je .pad_1 |
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226 | |||
227 | cmp al, 1 |
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228 | je .pad_n |
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229 | |||
230 | mov al, [esi] ; routing type |
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231 | |||
232 | jmp .nextheader |
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233 | |||
234 | .fragment: |
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3556 | hidnplayr | 235 | DEBUGF DEBUG_NETWORK_VERBOSE, "IPv6_input - fragment\n" |
3545 | hidnplayr | 236 | |
237 | jmp .nextheader |
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238 | |||
239 | |||
240 | |||
241 | |||
242 | |||
243 | |||
6011 | hidnplayr | 244 | ;-----------------------------------------------------------------; |
245 | ; ; |
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246 | ; ipv6_api: Part of system function 76 ; |
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247 | ; ; |
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248 | ; IN: bl = subfunction number ; |
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249 | ; bh = device number ; |
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250 | ; ecx, edx, .. depends on subfunction ; |
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251 | ; ; |
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252 | ; OUT: depends on subfunction ; |
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253 | ; ; |
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254 | ;-----------------------------------------------------------------; |
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3545 | hidnplayr | 255 | align 4 |
6011 | hidnplayr | 256 | ipv6_api: |
3545 | hidnplayr | 257 | |
258 | movzx eax, bh |
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259 | shl eax, 2 |
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260 | |||
261 | and ebx, 0x000000ff |
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262 | cmp ebx, .number |
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263 | ja .error |
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264 | jmp dword [.table + 4*ebx] |
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265 | |||
266 | .table: |
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267 | dd .packets_tx ; 0 |
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268 | dd .packets_rx ; 1 |
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269 | ; dd .read_ip ; 2 |
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270 | ; dd .write_ip ; 3 |
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271 | ; dd .read_dns ; 4 |
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272 | ; dd .write_dns ; 5 |
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273 | ; dd .read_subnet ; 6 |
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274 | ; dd .write_subnet ; 7 |
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275 | ; dd .read_gateway ; 8 |
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276 | ; dd .write_gateway ; 9 |
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277 | .number = ($ - .table) / 4 - 1 |
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278 | |||
279 | .error: |
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280 | mov eax, -1 |
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281 | ret |
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282 | |||
283 | .packets_tx: |
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284 | mov eax, [IPv6.packets_tx + eax] |
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285 | ret |
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286 | |||
287 | .packets_rx: |
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288 | mov eax, [IPv6.packets_rx + eax] |
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289 | ret |
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290 |