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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 | ;; PPPoE.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 | |
3545 | hidnplayr | 18 | struct PPPoE_frame |
19 | VersionAndType db ? |
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20 | Code db ? |
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21 | SessionID dw ? |
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22 | Length dw ? ; Length of payload, does NOT include the length PPPoE header. |
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23 | Payload rb 0 |
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24 | ends |
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25 | |||
26 | uglobal |
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3698 | hidnplayr | 27 | align 4 |
28 | |||
3545 | hidnplayr | 29 | PPPoE_SID dw ? |
30 | PPPoE_MAC dp ? |
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3698 | hidnplayr | 31 | |
3545 | hidnplayr | 32 | endg |
33 | |||
6011 | hidnplayr | 34 | ;-----------------------------------------------------------------; |
35 | ; ; |
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36 | ; pppoe_init: Reset all pppoe variables ; |
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37 | ; ; |
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38 | ;-----------------------------------------------------------------; |
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39 | macro pppoe_init { |
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3545 | hidnplayr | 40 | |
6011 | hidnplayr | 41 | call pppoe_stop_connection |
3545 | hidnplayr | 42 | |
43 | } |
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44 | |||
45 | |||
6011 | hidnplayr | 46 | ;-----------------------------------------------------------------; |
47 | ; ; |
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48 | ; pppoe_discovery_input ; |
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49 | ; ; |
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50 | ; IN: [esp] = ptr to buffer ; |
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51 | ; [esp+4] = size of buffer ; |
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52 | ; ebx = ptr to device struct ; |
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53 | ; ecx = size of PPP packet ; |
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54 | ; edx = ptr to PPP header ; |
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55 | ; ; |
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56 | ; OUT: / ; |
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57 | ; ; |
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58 | ;-----------------------------------------------------------------; |
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3545 | hidnplayr | 59 | align 4 |
6011 | hidnplayr | 60 | pppoe_discovery_input: |
3545 | hidnplayr | 61 | |
3556 | hidnplayr | 62 | DEBUGF DEBUG_NETWORK_VERBOSE, "PPPoE_discovery_input\n" |
3545 | hidnplayr | 63 | |
64 | ; First, find open PPPoE socket |
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65 | |||
3647 | hidnplayr | 66 | pusha |
67 | mov ecx, socket_mutex |
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68 | call mutex_lock |
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69 | popa |
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70 | |||
3545 | hidnplayr | 71 | mov eax, net_sockets |
72 | |||
73 | .next_socket: |
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74 | mov eax, [eax + SOCKET.NextPtr] |
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75 | or eax, eax |
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76 | jz .dump |
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77 | |||
78 | cmp [eax + SOCKET.Domain], AF_PPP |
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79 | jne .next_socket |
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80 | |||
81 | cmp [eax + SOCKET.Protocol], PPP_PROTO_ETHERNET |
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82 | jne .next_socket |
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83 | |||
3647 | hidnplayr | 84 | pusha |
85 | mov ecx, socket_mutex |
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86 | call mutex_unlock |
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87 | popa |
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88 | |||
3545 | hidnplayr | 89 | ; Now, send it to the this socket |
90 | |||
91 | mov ecx, [esp + 4] |
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92 | mov esi, [esp] |
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93 | |||
6011 | hidnplayr | 94 | jmp socket_input |
3545 | hidnplayr | 95 | |
96 | .dump: |
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3647 | hidnplayr | 97 | pusha |
98 | mov ecx, socket_mutex |
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99 | call mutex_unlock |
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100 | popa |
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101 | |||
3556 | hidnplayr | 102 | DEBUGF DEBUG_NETWORK_VERBOSE, 'PPPoE_discovery_input: dumping\n' |
6011 | hidnplayr | 103 | call net_buff_free |
3545 | hidnplayr | 104 | ret |
105 | |||
106 | |||
6011 | hidnplayr | 107 | ;-----------------------------------------------------------------; |
108 | ; ; |
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109 | ; pppoe_discovery_output ; |
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110 | ; ; |
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111 | ; IN: eax = socket pointer ; |
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112 | ; ecx = number of bytes to send ; |
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113 | ; esi = pointer to data ; |
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114 | ; ; |
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115 | ;-----------------------------------------------------------------; |
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3545 | hidnplayr | 116 | align 4 |
6011 | hidnplayr | 117 | pppoe_discovery_output: |
3545 | hidnplayr | 118 | |
3556 | hidnplayr | 119 | DEBUGF DEBUG_NETWORK_VERBOSE, "PPPoE_discovery_output: socket=%x buffer=%x size=%d\n", eax, esi, ecx |
3545 | hidnplayr | 120 | |
121 | ; RFC2516: An entire PADI packet (including the PPPoE header) MUST NOT |
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122 | ; exceed 1484 octets. |
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123 | cmp ecx, 1484 + 14 |
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124 | ja .bad |
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125 | |||
126 | ; Check that device exists and is ethernet device |
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127 | mov ebx, [eax + SOCKET.device] |
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128 | |||
3600 | hidnplayr | 129 | cmp ebx, NET_DEVICES_MAX |
3545 | hidnplayr | 130 | ja .bad |
131 | |||
7679 | hidnplayr | 132 | mov ebx, [net_device_list + 4*ebx] |
3545 | hidnplayr | 133 | test ebx, ebx |
134 | jz .bad |
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135 | |||
3600 | hidnplayr | 136 | cmp [ebx + NET_DEVICE.device_type], NET_DEVICE_ETH |
3545 | hidnplayr | 137 | jne .bad |
138 | |||
3556 | hidnplayr | 139 | DEBUGF DEBUG_NETWORK_VERBOSE, "PPPoE_discovery_output: device=%x\n", ebx |
3545 | hidnplayr | 140 | |
141 | ; Create packet. |
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9049 | hidnplayr | 142 | stdcall net_buff_alloc, 1514 + NET_BUFF.data |
3545 | hidnplayr | 143 | test eax, eax |
144 | jz .bad |
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145 | |||
9049 | hidnplayr | 146 | ; Net buffer header |
147 | mov [eax + NET_BUFF.type], NET_BUFF_ETH |
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148 | mov [eax + NET_BUFF.device], ebx |
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149 | mov [eax + NET_BUFF.offset], NET_BUFF.data |
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150 | |||
151 | ; Packet data |
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3545 | hidnplayr | 152 | mov edx, ecx |
9049 | hidnplayr | 153 | lea edi, [eax + NET_BUFF.data] |
3711 | clevermous | 154 | rep movsb |
3545 | hidnplayr | 155 | |
9049 | hidnplayr | 156 | ; Packet size |
157 | cmp edx, 60 |
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3545 | hidnplayr | 158 | ja @f |
159 | mov edx, 60 |
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9049 | hidnplayr | 160 | @@: |
161 | mov [eax + NET_BUFF.length], edx |
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3545 | hidnplayr | 162 | |
9049 | hidnplayr | 163 | ; Overwrite ETH source MAC with our own |
3545 | hidnplayr | 164 | lea esi, [ebx + ETH_DEVICE.mac] |
9049 | hidnplayr | 165 | lea edi, [eax + NET_BUFF.data + ETH_header.SrcMAC] |
3545 | hidnplayr | 166 | movsd |
167 | movsw |
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9049 | hidnplayr | 168 | |
169 | ; Allow only PPP_discovery, or LCP |
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170 | cmp word[edi], ETHER_PROTO_PPP_SESSION |
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3545 | hidnplayr | 171 | je @f |
9049 | hidnplayr | 172 | mov word[edi], ETHER_PROTO_PPP_DISCOVERY |
3545 | hidnplayr | 173 | @@: |
174 | |||
175 | ; And send the packet |
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9049 | hidnplayr | 176 | stdcall [ebx + NET_DEVICE.transmit], eax |
3545 | hidnplayr | 177 | ret |
178 | |||
179 | .bad: |
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180 | or eax, -1 |
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181 | ret |
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182 | |||
183 | |||
6011 | hidnplayr | 184 | ;-----------------------------------------------------------------; |
185 | ; ; |
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186 | ; pppoe_session_input ; |
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187 | ; ; |
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188 | ; IN: [esp] = ptr to buffer ; |
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189 | ; [esp+4] = size of buffer ; |
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190 | ; ebx = ptr to device struct ; |
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191 | ; edx = ptr to PPP header ; |
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192 | ; ecx = size of PPP packet ; |
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193 | ; ; |
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194 | ; OUT: / ; |
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195 | ; ; |
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196 | ;-----------------------------------------------------------------; |
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3545 | hidnplayr | 197 | align 4 |
6011 | hidnplayr | 198 | pppoe_session_input: |
3545 | hidnplayr | 199 | |
200 | cmp [edx + PPPoE_frame.VersionAndType], 0x11 |
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201 | jne .dump |
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202 | |||
203 | cmp [edx + PPPoE_frame.Code], 0x00 |
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204 | jne .dump |
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205 | |||
206 | movzx ecx, [edx + PPPoE_frame.Length] |
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207 | xchg cl, ch |
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208 | |||
209 | mov ax, [edx + PPPoE_frame.SessionID] |
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3556 | hidnplayr | 210 | DEBUGF DEBUG_NETWORK_VERBOSE, "PPPoE_input: session ID=%x, length=%u\n", ax, cx |
3545 | hidnplayr | 211 | cmp ax, [PPPoE_SID] |
212 | jne .dump |
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213 | |||
214 | mov ax, word [edx + PPPoE_frame.Payload] |
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215 | add edx, PPPoE_frame.Payload + 2 |
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216 | |||
3600 | hidnplayr | 217 | cmp ax, PPP_PROTO_IPv4 |
6011 | hidnplayr | 218 | je ipv4_input |
3545 | hidnplayr | 219 | |
3600 | hidnplayr | 220 | ; cmp ax, PPP_PROTO_IPv6 |
6011 | hidnplayr | 221 | ; je ipv6_input |
3545 | hidnplayr | 222 | |
6011 | hidnplayr | 223 | jmp pppoe_discovery_input ; Send LCP,CHAP,CBCP,... packets to the PPP dialer |
3556 | hidnplayr | 224 | DEBUGF DEBUG_NETWORK_VERBOSE, "PPPoE_input: Unknown protocol=%x\n", ax |
3545 | hidnplayr | 225 | |
226 | .dump: |
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3556 | hidnplayr | 227 | DEBUGF DEBUG_NETWORK_VERBOSE, "PPPoE_input: dumping\n" |
6011 | hidnplayr | 228 | call net_buff_free |
3545 | hidnplayr | 229 | ret |
230 | |||
231 | |||
232 | |||
6011 | hidnplayr | 233 | ;-----------------------------------------------------------------; |
234 | ; ; |
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235 | ; pppoe_output ; |
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236 | ; ; |
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237 | ; IN: ax = protocol ; |
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238 | ; ebx = device ptr ; |
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239 | ; ecx = packet size ; |
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240 | ; ; |
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241 | ; OUT: eax = buffer start ; |
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242 | ; eax = 0 on error ; |
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243 | ; ebx = device ptr ; |
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244 | ; ecx = packet size ; |
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245 | ; edx = size of complete buffer ; |
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246 | ; edi = start of PPP payload ; |
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247 | ; ; |
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248 | ;-----------------------------------------------------------------; |
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3545 | hidnplayr | 249 | align 4 |
6011 | hidnplayr | 250 | pppoe_output: |
3545 | hidnplayr | 251 | |
3556 | hidnplayr | 252 | DEBUGF DEBUG_NETWORK_VERBOSE, "PPPoE_output: size=%u device=%x\n", ecx, ebx |
3545 | hidnplayr | 253 | |
5015 | hidnplayr | 254 | pushw ax |
3545 | hidnplayr | 255 | pushw [PPPoE_SID] |
256 | |||
5015 | hidnplayr | 257 | mov ax, ETHER_PROTO_PPP_SESSION |
258 | add ecx, PPPoE_frame.Payload + 2 |
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3545 | hidnplayr | 259 | lea edx, [PPPoE_MAC] |
6011 | hidnplayr | 260 | call eth_output |
3545 | hidnplayr | 261 | jz .eth_error |
262 | |||
263 | sub ecx, PPPoE_frame.Payload |
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264 | mov [edi + PPPoE_frame.VersionAndType], 0x11 |
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265 | mov [edi + PPPoE_frame.Code], 0 |
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266 | popw [edi + PPPoE_frame.SessionID] |
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267 | xchg cl, ch |
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268 | mov [edi + PPPoE_frame.Length], cx |
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269 | xchg cl, ch |
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270 | |||
271 | pop word [edi + PPPoE_frame.Payload] |
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272 | |||
273 | sub ecx, 2 |
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274 | add edi, PPPoE_frame.Payload + 2 |
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275 | |||
3556 | hidnplayr | 276 | DEBUGF DEBUG_NETWORK_VERBOSE, "PPPoE_output: success!\n" |
3545 | hidnplayr | 277 | ret |
278 | |||
279 | |||
280 | .eth_error: |
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281 | add esp, 4 |
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5015 | hidnplayr | 282 | xor eax, eax |
3545 | hidnplayr | 283 | ret |
284 | |||
6011 | hidnplayr | 285 | align 4 |
286 | pppoe_start_connection: |
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3545 | hidnplayr | 287 | |
3556 | hidnplayr | 288 | DEBUGF DEBUG_NETWORK_VERBOSE, "PPPoE_start_connection: %x\n", cx |
3545 | hidnplayr | 289 | |
290 | cmp [PPPoE_SID], 0 |
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291 | jne .fail |
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292 | |||
293 | mov [PPPoE_SID], cx |
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294 | mov dword [PPPoE_MAC], edx |
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295 | mov word [PPPoE_MAC + 4], si |
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296 | |||
297 | xor eax, eax |
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298 | ret |
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299 | |||
300 | .fail: |
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301 | or eax, -1 |
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302 | ret |
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303 | |||
304 | |||
305 | align 4 |
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6011 | hidnplayr | 306 | pppoe_stop_connection: |
3545 | hidnplayr | 307 | |
3556 | hidnplayr | 308 | DEBUGF DEBUG_NETWORK_VERBOSE, "PPPoE_stop_connection\n" |
3545 | hidnplayr | 309 | |
310 | xor eax, eax |
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311 | mov [PPPoE_SID], ax |
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312 | mov dword [PPPoE_MAC], eax |
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313 | mov word [PPPoE_MAC + 4], ax |
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314 | |||
315 | ret |
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316 | |||
317 | |||
6011 | hidnplayr | 318 | ;-----------------------------------------------------------------; |
319 | ; ; |
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320 | ; pppoe_api: Part of system function 76 ; |
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321 | ; ; |
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322 | ; IN: subfunction number in bl ; |
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323 | ; device number in bh ; |
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324 | ; ecx, edx, .. depends on subfunction ; |
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325 | ; ; |
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326 | ; OUT: ; |
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327 | ; ; |
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328 | ;-----------------------------------------------------------------; |
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3545 | hidnplayr | 329 | align 4 |
6011 | hidnplayr | 330 | pppoe_api: |
3545 | hidnplayr | 331 | |
332 | movzx eax, bh |
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333 | shl eax, 2 |
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334 | |||
335 | and ebx, 0xff |
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336 | cmp ebx, .number |
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337 | ja .error |
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338 | jmp dword [.table + 4*ebx] |
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339 | |||
340 | .table: |
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6011 | hidnplayr | 341 | dd pppoe_start_connection ; 0 |
342 | dd pppoe_stop_connection ; 1 |
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3545 | hidnplayr | 343 | .number = ($ - .table) / 4 - 1 |
344 | |||
345 | .error: |
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346 | mov eax, -1 |
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347 | ret |