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Rev | Author | Line No. | Line |
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1171 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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1763 | hidnplayr | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
1171 | hidnplayr | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;; STACK.INC ;; |
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7 | ;; ;; |
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1763 | hidnplayr | 8 | ;; TCP/IP stack for KolibriOS ;; |
1171 | hidnplayr | 9 | ;; ;; |
10 | ;; Written by hidnplayr@kolibrios.org ;; |
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11 | ;; ;; |
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1763 | hidnplayr | 12 | ;; Some parts of code are based on the work of: ;; |
13 | ;; Mike Hibbett (menuetos network stack) ;; |
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14 | ;; Eugen Brasoveanu (solar os network stack and drivers) ;; |
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15 | ;; mike.dld (kolibrios socket code) ;; |
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1171 | hidnplayr | 16 | ;; ;; |
1763 | hidnplayr | 17 | ;; TCP part is based on 4.4BSD ;; |
18 | ;; ;; |
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1171 | hidnplayr | 19 | ;; GNU GENERAL PUBLIC LICENSE ;; |
20 | ;; Version 2, June 1991 ;; |
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21 | ;; ;; |
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22 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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1159 | hidnplayr | 23 | |
1206 | hidnplayr | 24 | $Revision: 1763 $ |
1159 | hidnplayr | 25 | |
1763 | hidnplayr | 26 | __DEBUG_LEVEL_OLD__ equ __DEBUG_LEVEL__ ; use seperate debug level for network part of kernel |
27 | __DEBUG_LEVEL__ equ 1 |
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1473 | hidnplayr | 28 | |
1159 | hidnplayr | 29 | uglobal |
1763 | hidnplayr | 30 | net_10ms dd ? |
31 | net_tmr_count dw ? |
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1159 | hidnplayr | 32 | endg |
33 | |||
1259 | hidnplayr | 34 | MAX_NET_DEVICES equ 16 |
1159 | hidnplayr | 35 | |
1763 | hidnplayr | 36 | MIN_EPHEMERAL_PORT equ 49152 |
37 | MAX_EPHEMERAL_PORT equ 61000 |
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1159 | hidnplayr | 38 | |
1514 | hidnplayr | 39 | ; Ethernet protocol numbers |
1519 | hidnplayr | 40 | ETHER_ARP equ 0x0608 |
1733 | hidnplayr | 41 | ETHER_IPv4 equ 0x0008 |
1519 | hidnplayr | 42 | ETHER_PPP_DISCOVERY equ 0x6388 |
43 | ETHER_PPP_SESSION equ 0x6488 |
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1185 | hidnplayr | 44 | |
1514 | hidnplayr | 45 | ;Protocol family |
1254 | hidnplayr | 46 | AF_UNSPEC equ 0 |
1249 | hidnplayr | 47 | AF_UNIX equ 1 |
1159 | hidnplayr | 48 | AF_INET4 equ 2 |
1514 | hidnplayr | 49 | AF_INET6 equ 10 |
1159 | hidnplayr | 50 | |
1514 | hidnplayr | 51 | ; Internet protocol numbers |
1159 | hidnplayr | 52 | IP_PROTO_IP equ 0 |
53 | IP_PROTO_ICMP equ 1 |
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54 | IP_PROTO_TCP equ 6 |
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55 | IP_PROTO_UDP equ 17 |
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56 | |||
1200 | hidnplayr | 57 | ; Socket types |
1514 | hidnplayr | 58 | SOCK_STREAM equ 1 |
59 | SOCK_DGRAM equ 2 |
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60 | SOCK_RAW equ 3 |
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1200 | hidnplayr | 61 | |
1514 | hidnplayr | 62 | ; Socket options |
1529 | hidnplayr | 63 | SO_ACCEPTCON equ 1 |
1159 | hidnplayr | 64 | |
1529 | hidnplayr | 65 | SOCKET_MAXDATA equ 4096*32 ; must be 4096*(power of 2) where 'power of 2' is at least 8 |
1254 | hidnplayr | 66 | |
1514 | hidnplayr | 67 | ; Network driver types |
68 | NET_TYPE_ETH equ 1 |
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69 | NET_TYPE_SLIP equ 2 |
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1254 | hidnplayr | 70 | |
1543 | hidnplayr | 71 | MAX_backlog equ 20 ; maximum backlog for stream sockets |
1254 | hidnplayr | 72 | |
1716 | hidnplayr | 73 | ; Error Codes |
74 | ENOBUFS equ 55 |
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75 | ECONNREFUSED equ 61 |
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76 | ECONNRESET equ 52 |
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77 | ETIMEDOUT equ 60 |
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78 | ECONNABORTED equ 53 |
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1529 | hidnplayr | 79 | |
1716 | hidnplayr | 80 | |
81 | |||
1514 | hidnplayr | 82 | virtual at 0 |
1254 | hidnplayr | 83 | |
1514 | hidnplayr | 84 | NET_DEVICE: |
1519 | hidnplayr | 85 | |
86 | .type dd ? ; Type field |
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87 | .mtu dd ? ; Maximal Transmission Unit |
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88 | .name dd ? ; Ptr to 0 terminated string |
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89 | |||
90 | .unload dd ? ; Ptrs to driver functions |
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91 | .reset dd ? ; |
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92 | .transmit dd ? ; |
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93 | |||
94 | .bytes_tx dq ? ; Statistics, updated by the driver |
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95 | .bytes_rx dq ? ; |
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96 | .packets_tx dd ? ; |
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97 | .packets_rx dd ? ; |
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98 | |||
1763 | hidnplayr | 99 | ; .hwacc dd ? ; bitmask stating available hardware accelerations (offload engines) |
1529 | hidnplayr | 100 | |
1514 | hidnplayr | 101 | .end: |
1254 | hidnplayr | 102 | |
1514 | hidnplayr | 103 | end virtual |
1254 | hidnplayr | 104 | |
105 | |||
1514 | hidnplayr | 106 | ; Exactly as it says.. |
1318 | hidnplayr | 107 | macro pseudo_random reg { |
108 | add reg, [esp] |
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109 | rol reg, 5 |
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110 | xor reg, [timer_ticks] |
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1529 | hidnplayr | 111 | add reg, [CPU_FREQ] |
1318 | hidnplayr | 112 | imul reg, 214013 |
113 | xor reg, 0xdeadbeef |
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114 | rol reg, 9 |
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1514 | hidnplayr | 115 | } |
1318 | hidnplayr | 116 | |
1543 | hidnplayr | 117 | macro ntohd reg { |
1318 | hidnplayr | 118 | |
1514 | hidnplayr | 119 | rol word reg, 8 |
120 | rol dword reg, 16 |
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1529 | hidnplayr | 121 | rol word reg , 8 |
1514 | hidnplayr | 122 | |
1318 | hidnplayr | 123 | } |
124 | |||
1543 | hidnplayr | 125 | macro ntohw reg { |
1514 | hidnplayr | 126 | |
127 | rol word reg, 8 |
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128 | |||
129 | } |
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130 | |||
131 | |||
1529 | hidnplayr | 132 | macro packet_to_debug { ; set esi to packet you want to print, ecx to number of bytes |
133 | |||
134 | local .loop |
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135 | |||
136 | .loop: |
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137 | lodsb |
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138 | DEBUGF 1,"%x ", eax:2 |
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139 | loop @r |
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140 | |||
141 | } |
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142 | |||
143 | |||
1159 | hidnplayr | 144 | include "queue.inc" |
1514 | hidnplayr | 145 | |
146 | include "ethernet.inc" |
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1719 | hidnplayr | 147 | |
1514 | hidnplayr | 148 | ;include "slip.inc" |
1719 | hidnplayr | 149 | ;include "pppoe.inc" |
1514 | hidnplayr | 150 | |
1187 | hidnplayr | 151 | include "ARP.inc" |
152 | include "IPv4.inc" |
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1514 | hidnplayr | 153 | |
154 | include "icmp.inc" |
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155 | include "udp.inc" |
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1249 | hidnplayr | 156 | include "tcp.inc" |
1159 | hidnplayr | 157 | |
1514 | hidnplayr | 158 | include "socket.inc" |
159 | |||
160 | |||
161 | |||
162 | align 4 |
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163 | uglobal |
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164 | |||
165 | NET_RUNNING dd ? |
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166 | NET_DRV_LIST rd MAX_NET_DEVICES |
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167 | |||
168 | endg |
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169 | |||
170 | |||
1257 | hidnplayr | 171 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 172 | ; |
173 | ; stack_init |
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174 | ; |
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175 | ; This function calls all network init procedures |
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176 | ; |
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177 | ; IN: / |
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178 | ; OUT: / |
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179 | ; |
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1257 | hidnplayr | 180 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 181 | align 4 |
182 | stack_init: |
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183 | |||
1514 | hidnplayr | 184 | ; Init the network drivers list |
185 | xor eax, eax |
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186 | mov edi, NET_RUNNING |
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187 | mov ecx, MAX_NET_DEVICES + 1 |
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188 | rep stosd |
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189 | |||
1529 | hidnplayr | 190 | ETH_init |
191 | ; SLIP_init |
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192 | ; PPPOE_init |
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1514 | hidnplayr | 193 | |
1529 | hidnplayr | 194 | IPv4_init |
195 | ICMP_init |
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1514 | hidnplayr | 196 | |
1529 | hidnplayr | 197 | ARP_init |
198 | UDP_init |
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199 | TCP_init |
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1514 | hidnplayr | 200 | |
1529 | hidnplayr | 201 | SOCKET_init |
1514 | hidnplayr | 202 | |
203 | mov [net_tmr_count], 0 |
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1159 | hidnplayr | 204 | |
205 | ret |
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206 | |||
207 | |||
1257 | hidnplayr | 208 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 209 | ; |
210 | ; stack_handler |
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211 | ; |
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1514 | hidnplayr | 212 | ; This function is called in kernel loop |
1159 | hidnplayr | 213 | ; |
214 | ; IN: / |
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215 | ; OUT: / |
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216 | ; |
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1257 | hidnplayr | 217 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 218 | align 4 |
219 | stack_handler: |
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220 | |||
1514 | hidnplayr | 221 | cmp [NET_RUNNING], 0 |
1257 | hidnplayr | 222 | je .exit |
1159 | hidnplayr | 223 | |
1318 | hidnplayr | 224 | ; Test for 10ms tick |
1257 | hidnplayr | 225 | mov eax, [timer_ticks] |
1514 | hidnplayr | 226 | cmp eax, [net_10ms] |
1257 | hidnplayr | 227 | je .exit |
1514 | hidnplayr | 228 | mov [net_10ms], eax |
1159 | hidnplayr | 229 | |
1519 | hidnplayr | 230 | test [net_10ms], 0x0f ; 160ms |
231 | jnz .exit |
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1249 | hidnplayr | 232 | |
1529 | hidnplayr | 233 | TCP_timer_160ms |
1159 | hidnplayr | 234 | |
1519 | hidnplayr | 235 | test [net_10ms], 0x3f ; 640ms |
236 | jnz .exit |
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237 | |||
1529 | hidnplayr | 238 | TCP_timer_640ms |
239 | ARP_decrease_entry_ttls |
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240 | IPv4_decrease_fragment_ttls |
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1159 | hidnplayr | 241 | |
242 | .exit: |
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1257 | hidnplayr | 243 | ret |
1159 | hidnplayr | 244 | |
245 | |||
1514 | hidnplayr | 246 | |
1249 | hidnplayr | 247 | ;----------------------------------------------------------------- |
248 | ; |
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1514 | hidnplayr | 249 | ; NET_Add_Device: |
250 | ; |
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251 | ; This function is called by the network drivers, |
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252 | ; to register each running NIC to the kernel |
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253 | ; |
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254 | ; IN: Pointer to device structure in ebx |
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255 | ; OUT: Device num in eax, -1 on error |
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256 | ; |
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257 | ;----------------------------------------------------------------- |
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258 | align 4 |
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259 | NET_add_device: |
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260 | |||
261 | DEBUGF 1,"NET_Add_Device: %x\n", ebx |
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262 | |||
263 | mov eax, [NET_RUNNING] |
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264 | cmp eax, MAX_NET_DEVICES |
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265 | jge .error |
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266 | |||
267 | ;---------------------------------- |
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268 | ; Check if device is already listed |
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269 | mov eax, ebx |
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270 | mov ecx, MAX_NET_DEVICES ; We need to check whole list because a device may be removed without re-organizing list |
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271 | mov edi, NET_DRV_LIST |
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272 | |||
273 | repne scasd ; See if device is already in the list |
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274 | jz .error |
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275 | |||
276 | ;---------------------------- |
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277 | ; Find empty slot in the list |
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278 | xor eax, eax |
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279 | mov ecx, MAX_NET_DEVICES |
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280 | mov edi, NET_DRV_LIST |
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281 | |||
282 | repne scasd |
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283 | jnz .error |
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284 | |||
285 | sub edi, 4 |
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286 | |||
287 | cmp [ebx + NET_DEVICE.type], NET_TYPE_ETH |
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288 | je .ethernet |
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289 | |||
290 | cmp [ebx + NET_DEVICE.type], NET_TYPE_SLIP |
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291 | je .slip |
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292 | |||
293 | DEBUGF 1,"Unknown network device type: %u\n", [ebx + NET_DEVICE.type] |
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294 | jmp .error |
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295 | |||
296 | .ethernet: |
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1529 | hidnplayr | 297 | DEBUGF 1,"Trying to add an ethernet device\n" |
1514 | hidnplayr | 298 | |
299 | inc [ETH_RUNNING] ; Indicate that one more ethernet device is up and running |
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300 | jmp .add_it |
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301 | |||
302 | .slip: |
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1529 | hidnplayr | 303 | DEBUGF 1,"Trying to add a slip device\n" |
1514 | hidnplayr | 304 | ;;;; |
305 | jmp .error |
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306 | |||
307 | |||
308 | .add_it: |
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309 | |||
310 | ;----------------------------- |
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311 | ; Add device to the found slot |
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312 | mov [edi], ebx ; add device to list |
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313 | |||
314 | sub edi, NET_DRV_LIST ; Calculate device number in eax |
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315 | mov eax, edi ; |
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316 | shr eax, 2 |
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317 | |||
318 | inc [NET_RUNNING] ; Indicate that one more network device is up and running |
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319 | |||
320 | DEBUGF 1,"Device number: %u\n",eax |
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321 | ret |
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322 | |||
323 | .error: |
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324 | or eax, -1 |
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325 | DEBUGF 2,"Adding network device failed\n" |
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326 | ret |
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327 | |||
328 | |||
329 | |||
330 | ;----------------------------------------------------------------- |
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331 | ; |
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332 | ; NET_Remove_Device: |
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333 | ; |
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334 | ; This function is called by etwork drivers, |
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335 | ; to unregister network devices from the kernel |
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336 | ; |
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337 | ; IN: Pointer to device structure in ebx |
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338 | ; OUT: eax: -1 on error |
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339 | ; |
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340 | ;----------------------------------------------------------------- |
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341 | align 4 |
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342 | NET_remove_device: |
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343 | |||
344 | cmp [NET_RUNNING], 0 |
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345 | je .error |
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346 | |||
347 | ;---------------------------- |
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348 | ; Find the driver in the list |
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349 | |||
350 | mov eax, ebx |
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351 | mov ecx, MAX_NET_DEVICES |
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352 | mov edi, NET_DRV_LIST |
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353 | |||
354 | repne scasd |
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355 | jnz .error |
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356 | |||
357 | ;------------------------ |
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358 | ; Remove it from the list |
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359 | |||
360 | xor eax, eax |
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361 | mov dword [edi-4], eax |
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362 | |||
363 | dec [NET_RUNNING] |
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364 | ret |
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365 | |||
366 | .error: |
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367 | or eax, -1 |
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368 | ret |
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369 | |||
370 | |||
371 | |||
372 | ;----------------------------------------------------------------- |
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373 | ; |
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374 | ; NET_ptr_to_num |
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375 | ; |
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376 | ; IN: ebx = ptr to device struct |
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377 | ; OUT: edi = -1 on error, device number otherwise |
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378 | ; |
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379 | ;----------------------------------------------------------------- |
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380 | align 4 |
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381 | NET_ptr_to_num: |
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382 | push ecx |
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383 | |||
384 | mov ecx, MAX_NET_DEVICES |
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385 | mov edi, NET_DRV_LIST |
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386 | |||
387 | .loop: |
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388 | cmp ebx, [edi] |
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389 | jz .found |
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390 | add edi, 4 |
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391 | dec ecx |
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392 | jnz .loop |
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393 | |||
394 | ; repnz scasd could work too if eax is used instead of ebx! |
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395 | |||
396 | or edi, -1 |
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397 | |||
398 | pop ecx |
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399 | ret |
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400 | |||
401 | .found: |
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402 | sub edi, NET_DRV_LIST |
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403 | shr edi, 2 |
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404 | |||
405 | pop ecx |
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406 | ret |
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407 | |||
408 | ;----------------------------------------------------------------- |
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409 | ; |
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1249 | hidnplayr | 410 | ; checksum_1 |
411 | ; |
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1482 | hidnplayr | 412 | ; This is the first of two functions needed to calculate a checksum. |
1249 | hidnplayr | 413 | ; |
1473 | hidnplayr | 414 | ; IN: edx = start offset for semi-checksum |
1249 | hidnplayr | 415 | ; esi = pointer to data |
416 | ; ecx = data size |
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417 | ; OUT: edx = semi-checksum |
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418 | ; |
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1473 | hidnplayr | 419 | ; |
420 | ; Code was optimized by diamond |
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421 | ; |
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1249 | hidnplayr | 422 | ;----------------------------------------------------------------- |
423 | align 4 |
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424 | checksum_1: |
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1159 | hidnplayr | 425 | |
1249 | hidnplayr | 426 | shr ecx, 1 |
427 | pushf |
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1473 | hidnplayr | 428 | jz .no_2 |
1159 | hidnplayr | 429 | |
1473 | hidnplayr | 430 | shr ecx, 1 |
431 | pushf |
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432 | jz .no_4 |
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433 | |||
434 | shr ecx, 1 |
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435 | pushf |
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436 | jz .no_8 |
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437 | |||
438 | .loop: |
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439 | add dl, [esi+1] |
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440 | adc dh, [esi+0] |
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441 | |||
442 | adc dl, [esi+3] |
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443 | adc dh, [esi+2] |
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444 | |||
445 | adc dl, [esi+5] |
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446 | adc dh, [esi+4] |
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447 | |||
448 | adc dl, [esi+7] |
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449 | adc dh, [esi+6] |
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450 | |||
451 | adc edx, 0 |
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452 | add esi, 8 |
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453 | |||
454 | dec ecx |
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455 | jnz .loop |
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456 | |||
457 | adc edx, 0 |
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458 | |||
459 | .no_8: |
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1249 | hidnplayr | 460 | popf |
1473 | hidnplayr | 461 | jnc .no_4 |
462 | |||
463 | add dl, [esi+1] |
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464 | adc dh, [esi+0] |
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465 | |||
466 | adc dl, [esi+3] |
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467 | adc dh, [esi+2] |
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468 | |||
469 | adc edx, 0 |
||
470 | add esi, 4 |
||
471 | |||
472 | .no_4: |
||
473 | popf |
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474 | jnc .no_2 |
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475 | |||
476 | add dl, [esi+1] |
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477 | adc dh, [esi+0] |
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478 | |||
479 | adc edx, 0 |
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1483 | hidnplayr | 480 | inc esi |
481 | inc esi |
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1473 | hidnplayr | 482 | |
483 | .no_2: |
||
484 | popf |
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1249 | hidnplayr | 485 | jnc .end |
1159 | hidnplayr | 486 | |
1473 | hidnplayr | 487 | add dh, [esi+0] |
1251 | clevermous | 488 | adc edx, 0 |
1473 | hidnplayr | 489 | .end: |
490 | ret |
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1159 | hidnplayr | 491 | |
1249 | hidnplayr | 492 | ;----------------------------------------------------------------- |
493 | ; |
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494 | ; checksum_2 |
||
495 | ; |
||
496 | ; This function calculates the final ip/tcp/udp checksum for you |
||
497 | ; |
||
498 | ; IN: edx = semi-checksum |
||
499 | ; OUT: dx = checksum (in INET byte order) |
||
500 | ; |
||
501 | ;----------------------------------------------------------------- |
||
502 | align 4 |
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503 | checksum_2: |
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504 | |||
505 | mov ecx, edx |
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506 | shr ecx, 16 |
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507 | and edx, 0xffff |
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508 | add edx, ecx |
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509 | |||
1482 | hidnplayr | 510 | mov ecx, edx |
511 | shr ecx, 16 |
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1529 | hidnplayr | 512 | add dx, cx |
513 | test dx, dx ; it seems that ZF is not set when CF is set :( |
||
1249 | hidnplayr | 514 | not dx |
515 | jnz .not_zero |
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516 | dec dx |
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517 | .not_zero: |
||
518 | xchg dl, dh |
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519 | |||
1529 | hidnplayr | 520 | DEBUGF 1,"Checksum: %x\n", dx |
1249 | hidnplayr | 521 | |
522 | ret |
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523 | |||
524 | |||
525 | |||
1159 | hidnplayr | 526 | ;---------------------------------------------------------------- |
527 | ; |
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1171 | hidnplayr | 528 | ; System function to work with network devices (73) |
1159 | hidnplayr | 529 | ; |
530 | ;---------------------------------------------------------------- |
||
531 | align 4 |
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532 | sys_network: |
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533 | |||
1196 | hidnplayr | 534 | cmp ebx, -1 |
535 | jne @f |
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536 | |||
1514 | hidnplayr | 537 | mov eax, [NET_RUNNING] |
1196 | hidnplayr | 538 | jmp .return |
539 | |||
540 | @@: |
||
1159 | hidnplayr | 541 | cmp bh, MAX_NET_DEVICES ; Check if device number exists |
542 | jge .doesnt_exist |
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543 | |||
544 | mov esi, ebx |
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545 | and esi, 0x0000ff00 |
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546 | shr esi, 6 |
||
547 | |||
1514 | hidnplayr | 548 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
1159 | hidnplayr | 549 | je .doesnt_exist |
550 | |||
1514 | hidnplayr | 551 | test bl, bl ; 0 = Get device type (ethernet/token ring/...) |
1159 | hidnplayr | 552 | jnz @f |
1514 | hidnplayr | 553 | |
1192 | hidnplayr | 554 | xor eax, eax |
555 | jmp .return |
||
1159 | hidnplayr | 556 | |
557 | |||
558 | @@: |
||
559 | dec bl ; 1 = Get device name |
||
560 | jnz @f |
||
561 | |||
1514 | hidnplayr | 562 | mov esi, [esi + NET_DRV_LIST] |
1519 | hidnplayr | 563 | mov esi, [esi + NET_DEVICE.name] |
1159 | hidnplayr | 564 | mov edi, ecx |
565 | |||
566 | mov ecx, 64 ; max length |
||
567 | repnz movsb |
||
568 | |||
1192 | hidnplayr | 569 | xor eax, eax |
570 | jmp .return |
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1159 | hidnplayr | 571 | |
1192 | hidnplayr | 572 | @@: |
1159 | hidnplayr | 573 | |
1192 | hidnplayr | 574 | dec bl ; 2 = Reset the device |
575 | jnz @f |
||
576 | |||
1514 | hidnplayr | 577 | mov esi, [esi + NET_DRV_LIST] |
1519 | hidnplayr | 578 | call [esi + NET_DEVICE.reset] |
1192 | hidnplayr | 579 | jmp .return |
580 | |||
1159 | hidnplayr | 581 | @@: |
1192 | hidnplayr | 582 | |
583 | dec bl ; 3 = Stop driver for this device |
||
584 | jnz @f |
||
585 | |||
1514 | hidnplayr | 586 | mov esi, [esi + NET_DRV_LIST] |
1519 | hidnplayr | 587 | call [esi + NET_DEVICE.unload] |
1192 | hidnplayr | 588 | jmp .return |
589 | |||
590 | @@: |
||
1249 | hidnplayr | 591 | dec bl ; 4 = Get driver pointer |
592 | jnz @f |
||
1192 | hidnplayr | 593 | |
1249 | hidnplayr | 594 | ; ..; |
595 | |||
596 | |||
597 | @@: |
||
598 | ; ... ; 5 Get driver name |
||
599 | |||
1159 | hidnplayr | 600 | .doesnt_exist: |
601 | DEBUGF 1,"sys_network: invalid device/function specified!\n" |
||
602 | mov eax, -1 |
||
603 | |||
1192 | hidnplayr | 604 | .return: |
605 | mov [esp+28+4], eax |
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1159 | hidnplayr | 606 | ret |
607 | |||
608 | |||
609 | ;---------------------------------------------------------------- |
||
610 | ; |
||
1514 | hidnplayr | 611 | ; System function to work with protocols (75) |
1159 | hidnplayr | 612 | ; |
613 | ;---------------------------------------------------------------- |
||
614 | align 4 |
||
615 | sys_protocols: |
||
616 | cmp bh, MAX_NET_DEVICES ; Check if device number exists |
||
617 | jge .doesnt_exist |
||
618 | |||
619 | mov esi, ebx |
||
620 | and esi, 0x0000ff00 |
||
1514 | hidnplayr | 621 | shr esi, 6 ; now we have the device num * 4 in esi |
622 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
||
1159 | hidnplayr | 623 | je .doesnt_exist |
624 | |||
625 | push .return ; return address (we will be using jumps instead of calls) |
||
626 | |||
627 | mov eax, ebx ; set ax to protocol number |
||
628 | shr eax, 16 ; |
||
629 | |||
630 | cmp ax , IP_PROTO_IP |
||
631 | je IPv4_API |
||
632 | |||
633 | cmp ax , IP_PROTO_ICMP |
||
634 | je ICMP_API |
||
635 | |||
636 | cmp ax , IP_PROTO_UDP |
||
637 | je UDP_API |
||
638 | |||
1171 | hidnplayr | 639 | cmp ax , IP_PROTO_TCP |
1254 | hidnplayr | 640 | je TCP_API |
1159 | hidnplayr | 641 | |
1171 | hidnplayr | 642 | cmp ax , ETHER_ARP |
1159 | hidnplayr | 643 | je ARP_API |
644 | |||
1519 | hidnplayr | 645 | cmp ax , 1337 ;;;;; |
1159 | hidnplayr | 646 | je ETH_API |
647 | |||
1171 | hidnplayr | 648 | add esp, 4 ; if we reached here, no function was called, so we need to balance stack |
1159 | hidnplayr | 649 | |
650 | .doesnt_exist: |
||
1519 | hidnplayr | 651 | DEBUGF 1,"sys_protocols: protocol %u doesnt exist on device %u!\n", ax, bh |
1159 | hidnplayr | 652 | mov eax, -1 |
653 | |||
654 | .return: |
||
1171 | hidnplayr | 655 | mov [esp+28+4], eax |
1257 | hidnplayr | 656 | ret |
1473 | hidnplayr | 657 | |
658 | |||
659 | __DEBUG_LEVEL__ equ __DEBUG_LEVEL_OLD__ |