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1171 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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1514 | hidnplayr | 3 | ;; Copyright (C) KolibriOS team 2004-2010. 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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8 | ;; BASIC TCP/IP 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 | ;; based on the work of Mike Hibbett, mikeh@oceanfree.net ;; |
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13 | ;; but also Paolo Franchetti ;; |
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14 | ;; ;; |
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15 | ;; GNU GENERAL PUBLIC LICENSE ;; |
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16 | ;; Version 2, June 1991 ;; |
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17 | ;; ;; |
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18 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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1159 | hidnplayr | 19 | |
1206 | hidnplayr | 20 | $Revision: 1716 $ |
1159 | hidnplayr | 21 | |
1473 | hidnplayr | 22 | __DEBUG_LEVEL_OLD__ equ __DEBUG_LEVEL__ |
23 | __DEBUG_LEVEL__ equ 1 ; this sets the debug level for network part of kernel |
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24 | |||
1159 | hidnplayr | 25 | uglobal |
1514 | hidnplayr | 26 | net_10ms dd ? |
27 | net_tmr_count dw ? |
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1159 | hidnplayr | 28 | endg |
29 | |||
1259 | hidnplayr | 30 | MAX_NET_DEVICES equ 16 |
1159 | hidnplayr | 31 | |
1514 | hidnplayr | 32 | ETH_QUEUE equ 0 ; 1 = enable / 0 = disable |
33 | |||
1185 | hidnplayr | 34 | MIN_EPHEMERAL_PORT equ 49152 |
35 | MAX_EPHEMERAL_PORT equ 61000 |
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1159 | hidnplayr | 36 | |
1514 | hidnplayr | 37 | ; Ethernet protocol numbers |
1519 | hidnplayr | 38 | ETHER_ARP equ 0x0608 |
39 | ETHER_IPv4 equ 0x0008 ; Reversed from 0800 for intel |
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40 | ETHER_PPP_DISCOVERY equ 0x6388 |
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41 | ETHER_PPP_SESSION equ 0x6488 |
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1185 | hidnplayr | 42 | |
1514 | hidnplayr | 43 | ;Protocol family |
1254 | hidnplayr | 44 | AF_UNSPEC equ 0 |
1249 | hidnplayr | 45 | AF_UNIX equ 1 |
1159 | hidnplayr | 46 | AF_INET4 equ 2 |
47 | ;AF_AX25 equ 3 |
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48 | ;AF_IPX equ 4 |
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49 | ;AF_APPLETALK equ 5 |
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50 | ;AF_NETROM equ 6 |
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51 | ;AF_BRIDGE equ 7 |
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52 | ;AF_AAL5 equ 8 |
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53 | ;AF_X25 equ 9 |
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1514 | hidnplayr | 54 | AF_INET6 equ 10 |
1159 | hidnplayr | 55 | ;AF_MAX equ 12 |
56 | |||
1514 | hidnplayr | 57 | ; Internet protocol numbers |
1159 | hidnplayr | 58 | IP_PROTO_IP equ 0 |
59 | IP_PROTO_ICMP equ 1 |
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60 | IP_PROTO_TCP equ 6 |
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61 | IP_PROTO_UDP equ 17 |
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62 | |||
1200 | hidnplayr | 63 | ; Socket types |
1514 | hidnplayr | 64 | SOCK_STREAM equ 1 |
65 | SOCK_DGRAM equ 2 |
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66 | SOCK_RAW equ 3 |
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1200 | hidnplayr | 67 | |
1514 | hidnplayr | 68 | ; Socket options |
1529 | hidnplayr | 69 | SO_ACCEPTCON equ 1 |
1159 | hidnplayr | 70 | |
1529 | hidnplayr | 71 | SOCKET_MAXDATA equ 4096*32 ; must be 4096*(power of 2) where 'power of 2' is at least 8 |
1254 | hidnplayr | 72 | |
1514 | hidnplayr | 73 | ; Network driver types |
74 | NET_TYPE_ETH equ 1 |
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75 | NET_TYPE_SLIP equ 2 |
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1254 | hidnplayr | 76 | |
1543 | hidnplayr | 77 | MAX_backlog equ 20 ; maximum backlog for stream sockets |
1254 | hidnplayr | 78 | |
1716 | hidnplayr | 79 | ; Error Codes |
80 | ENOBUFS equ 55 |
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81 | ECONNREFUSED equ 61 |
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82 | ECONNRESET equ 52 |
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83 | ETIMEDOUT equ 60 |
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84 | ECONNABORTED equ 53 |
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1529 | hidnplayr | 85 | |
1716 | hidnplayr | 86 | |
87 | |||
1514 | hidnplayr | 88 | virtual at 0 |
1254 | hidnplayr | 89 | |
1514 | hidnplayr | 90 | NET_DEVICE: |
1519 | hidnplayr | 91 | |
92 | .type dd ? ; Type field |
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93 | .mtu dd ? ; Maximal Transmission Unit |
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94 | .name dd ? ; Ptr to 0 terminated string |
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95 | |||
96 | .unload dd ? ; Ptrs to driver functions |
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97 | .reset dd ? ; |
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98 | .transmit dd ? ; |
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99 | |||
100 | .bytes_tx dq ? ; Statistics, updated by the driver |
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101 | .bytes_rx dq ? ; |
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102 | .packets_tx dd ? ; |
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103 | .packets_rx dd ? ; |
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104 | |||
1529 | hidnplayr | 105 | ; .chksum dd ? ; bitmask stating available checksum routines on hardware |
106 | |||
1514 | hidnplayr | 107 | .end: |
1254 | hidnplayr | 108 | |
1514 | hidnplayr | 109 | end virtual |
1254 | hidnplayr | 110 | |
111 | |||
1514 | hidnplayr | 112 | ; Exactly as it says.. |
1318 | hidnplayr | 113 | macro pseudo_random reg { |
114 | add reg, [esp] |
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115 | rol reg, 5 |
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116 | xor reg, [timer_ticks] |
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1529 | hidnplayr | 117 | add reg, [CPU_FREQ] |
1318 | hidnplayr | 118 | imul reg, 214013 |
119 | xor reg, 0xdeadbeef |
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120 | rol reg, 9 |
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1514 | hidnplayr | 121 | } |
1318 | hidnplayr | 122 | |
1543 | hidnplayr | 123 | macro ntohd reg { |
1318 | hidnplayr | 124 | |
1514 | hidnplayr | 125 | rol word reg, 8 |
126 | rol dword reg, 16 |
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1529 | hidnplayr | 127 | rol word reg , 8 |
1514 | hidnplayr | 128 | |
1318 | hidnplayr | 129 | } |
130 | |||
1543 | hidnplayr | 131 | macro ntohw reg { |
1514 | hidnplayr | 132 | |
133 | rol word reg, 8 |
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134 | |||
135 | } |
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136 | |||
137 | |||
1529 | hidnplayr | 138 | macro packet_to_debug { ; set esi to packet you want to print, ecx to number of bytes |
139 | |||
140 | local .loop |
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141 | |||
142 | .loop: |
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143 | lodsb |
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144 | DEBUGF 1,"%x ", eax:2 |
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145 | loop @r |
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146 | |||
147 | } |
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148 | |||
149 | |||
1159 | hidnplayr | 150 | include "queue.inc" |
1514 | hidnplayr | 151 | |
152 | include "ethernet.inc" |
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153 | ;include "slip.inc" |
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154 | |||
1187 | hidnplayr | 155 | include "ARP.inc" |
156 | include "IPv4.inc" |
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1514 | hidnplayr | 157 | |
158 | include "icmp.inc" |
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159 | include "udp.inc" |
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1249 | hidnplayr | 160 | include "tcp.inc" |
1159 | hidnplayr | 161 | |
1514 | hidnplayr | 162 | include "socket.inc" |
163 | |||
164 | |||
165 | |||
166 | align 4 |
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167 | uglobal |
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168 | |||
169 | NET_RUNNING dd ? |
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170 | NET_DRV_LIST rd MAX_NET_DEVICES |
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171 | |||
172 | endg |
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173 | |||
174 | |||
1257 | hidnplayr | 175 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 176 | ; |
177 | ; stack_init |
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178 | ; |
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179 | ; This function calls all network init procedures |
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180 | ; |
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181 | ; IN: / |
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182 | ; OUT: / |
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183 | ; |
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1257 | hidnplayr | 184 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 185 | align 4 |
186 | stack_init: |
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187 | |||
1514 | hidnplayr | 188 | ; Init the network drivers list |
189 | xor eax, eax |
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190 | mov edi, NET_RUNNING |
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191 | mov ecx, MAX_NET_DEVICES + 1 |
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192 | rep stosd |
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193 | |||
1529 | hidnplayr | 194 | ETH_init |
195 | ; SLIP_init |
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196 | ; PPPOE_init |
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1514 | hidnplayr | 197 | |
1529 | hidnplayr | 198 | IPv4_init |
199 | ICMP_init |
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1514 | hidnplayr | 200 | |
1529 | hidnplayr | 201 | ARP_init |
202 | UDP_init |
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203 | TCP_init |
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1514 | hidnplayr | 204 | |
1529 | hidnplayr | 205 | SOCKET_init |
1514 | hidnplayr | 206 | |
207 | mov [net_tmr_count], 0 |
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1159 | hidnplayr | 208 | |
209 | ret |
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210 | |||
211 | |||
1257 | hidnplayr | 212 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 213 | ; |
214 | ; stack_handler |
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215 | ; |
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1514 | hidnplayr | 216 | ; This function is called in kernel loop |
1159 | hidnplayr | 217 | ; |
218 | ; IN: / |
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219 | ; OUT: / |
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220 | ; |
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1257 | hidnplayr | 221 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 222 | align 4 |
223 | stack_handler: |
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224 | |||
1514 | hidnplayr | 225 | cmp [NET_RUNNING], 0 |
1257 | hidnplayr | 226 | je .exit |
1159 | hidnplayr | 227 | |
1318 | hidnplayr | 228 | ; Test for 10ms tick |
1257 | hidnplayr | 229 | mov eax, [timer_ticks] |
1514 | hidnplayr | 230 | cmp eax, [net_10ms] |
1257 | hidnplayr | 231 | je .exit |
1514 | hidnplayr | 232 | mov [net_10ms], eax |
1159 | hidnplayr | 233 | |
1519 | hidnplayr | 234 | test [net_10ms], 0x0f ; 160ms |
235 | jnz .exit |
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1249 | hidnplayr | 236 | |
1529 | hidnplayr | 237 | TCP_timer_160ms |
1159 | hidnplayr | 238 | |
1519 | hidnplayr | 239 | test [net_10ms], 0x3f ; 640ms |
240 | jnz .exit |
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241 | |||
1529 | hidnplayr | 242 | TCP_timer_640ms |
243 | ARP_decrease_entry_ttls |
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244 | IPv4_decrease_fragment_ttls |
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1159 | hidnplayr | 245 | |
246 | .exit: |
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1257 | hidnplayr | 247 | ret |
1159 | hidnplayr | 248 | |
249 | |||
1514 | hidnplayr | 250 | |
1249 | hidnplayr | 251 | ;----------------------------------------------------------------- |
252 | ; |
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1514 | hidnplayr | 253 | ; NET_Add_Device: |
254 | ; |
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255 | ; This function is called by the network drivers, |
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256 | ; to register each running NIC to the kernel |
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257 | ; |
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258 | ; IN: Pointer to device structure in ebx |
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259 | ; OUT: Device num in eax, -1 on error |
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260 | ; |
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261 | ;----------------------------------------------------------------- |
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262 | align 4 |
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263 | NET_add_device: |
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264 | |||
265 | DEBUGF 1,"NET_Add_Device: %x\n", ebx |
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266 | |||
267 | mov eax, [NET_RUNNING] |
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268 | cmp eax, MAX_NET_DEVICES |
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269 | jge .error |
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270 | |||
271 | ;---------------------------------- |
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272 | ; Check if device is already listed |
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273 | mov eax, ebx |
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274 | 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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275 | mov edi, NET_DRV_LIST |
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276 | |||
277 | repne scasd ; See if device is already in the list |
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278 | jz .error |
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279 | |||
280 | ;---------------------------- |
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281 | ; Find empty slot in the list |
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282 | xor eax, eax |
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283 | mov ecx, MAX_NET_DEVICES |
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284 | mov edi, NET_DRV_LIST |
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285 | |||
286 | repne scasd |
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287 | jnz .error |
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288 | |||
289 | sub edi, 4 |
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290 | |||
291 | cmp [ebx + NET_DEVICE.type], NET_TYPE_ETH |
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292 | je .ethernet |
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293 | |||
294 | cmp [ebx + NET_DEVICE.type], NET_TYPE_SLIP |
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295 | je .slip |
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296 | |||
297 | DEBUGF 1,"Unknown network device type: %u\n", [ebx + NET_DEVICE.type] |
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298 | jmp .error |
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299 | |||
300 | .ethernet: |
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1529 | hidnplayr | 301 | DEBUGF 1,"Trying to add an ethernet device\n" |
1514 | hidnplayr | 302 | |
303 | inc [ETH_RUNNING] ; Indicate that one more ethernet device is up and running |
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304 | jmp .add_it |
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305 | |||
306 | .slip: |
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1529 | hidnplayr | 307 | DEBUGF 1,"Trying to add a slip device\n" |
1514 | hidnplayr | 308 | ;;;; |
309 | jmp .error |
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310 | |||
311 | |||
312 | .add_it: |
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313 | |||
314 | ;----------------------------- |
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315 | ; Add device to the found slot |
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316 | mov [edi], ebx ; add device to list |
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317 | |||
318 | sub edi, NET_DRV_LIST ; Calculate device number in eax |
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319 | mov eax, edi ; |
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320 | shr eax, 2 |
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321 | |||
322 | inc [NET_RUNNING] ; Indicate that one more network device is up and running |
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323 | |||
324 | DEBUGF 1,"Device number: %u\n",eax |
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325 | ret |
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326 | |||
327 | .error: |
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328 | or eax, -1 |
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329 | DEBUGF 2,"Adding network device failed\n" |
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330 | ret |
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331 | |||
332 | |||
333 | |||
334 | ;----------------------------------------------------------------- |
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335 | ; |
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336 | ; NET_Remove_Device: |
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337 | ; |
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338 | ; This function is called by etwork drivers, |
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339 | ; to unregister network devices from the kernel |
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340 | ; |
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341 | ; IN: Pointer to device structure in ebx |
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342 | ; OUT: eax: -1 on error |
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343 | ; |
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344 | ;----------------------------------------------------------------- |
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345 | align 4 |
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346 | NET_remove_device: |
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347 | |||
348 | cmp [NET_RUNNING], 0 |
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349 | je .error |
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350 | |||
351 | ;---------------------------- |
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352 | ; Find the driver in the list |
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353 | |||
354 | mov eax, ebx |
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355 | mov ecx, MAX_NET_DEVICES |
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356 | mov edi, NET_DRV_LIST |
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357 | |||
358 | repne scasd |
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359 | jnz .error |
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360 | |||
361 | ;------------------------ |
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362 | ; Remove it from the list |
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363 | |||
364 | xor eax, eax |
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365 | mov dword [edi-4], eax |
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366 | |||
367 | dec [NET_RUNNING] |
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368 | ret |
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369 | |||
370 | .error: |
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371 | or eax, -1 |
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372 | ret |
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373 | |||
374 | |||
375 | |||
376 | ;----------------------------------------------------------------- |
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377 | ; |
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378 | ; NET_ptr_to_num |
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379 | ; |
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380 | ; IN: ebx = ptr to device struct |
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381 | ; OUT: edi = -1 on error, device number otherwise |
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382 | ; |
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383 | ;----------------------------------------------------------------- |
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384 | align 4 |
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385 | NET_ptr_to_num: |
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386 | push ecx |
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387 | |||
388 | mov ecx, MAX_NET_DEVICES |
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389 | mov edi, NET_DRV_LIST |
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390 | |||
391 | .loop: |
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392 | cmp ebx, [edi] |
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393 | jz .found |
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394 | add edi, 4 |
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395 | dec ecx |
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396 | jnz .loop |
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397 | |||
398 | ; repnz scasd could work too if eax is used instead of ebx! |
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399 | |||
400 | or edi, -1 |
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401 | |||
402 | pop ecx |
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403 | ret |
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404 | |||
405 | .found: |
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406 | sub edi, NET_DRV_LIST |
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407 | shr edi, 2 |
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408 | |||
409 | pop ecx |
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410 | ret |
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411 | |||
412 | ;----------------------------------------------------------------- |
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413 | ; |
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1249 | hidnplayr | 414 | ; checksum_1 |
415 | ; |
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1482 | hidnplayr | 416 | ; This is the first of two functions needed to calculate a checksum. |
1249 | hidnplayr | 417 | ; |
1473 | hidnplayr | 418 | ; IN: edx = start offset for semi-checksum |
1249 | hidnplayr | 419 | ; esi = pointer to data |
420 | ; ecx = data size |
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421 | ; OUT: edx = semi-checksum |
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422 | ; |
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1473 | hidnplayr | 423 | ; |
424 | ; Code was optimized by diamond |
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425 | ; |
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1249 | hidnplayr | 426 | ;----------------------------------------------------------------- |
427 | align 4 |
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428 | checksum_1: |
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1159 | hidnplayr | 429 | |
1249 | hidnplayr | 430 | shr ecx, 1 |
431 | pushf |
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1473 | hidnplayr | 432 | jz .no_2 |
1159 | hidnplayr | 433 | |
1473 | hidnplayr | 434 | shr ecx, 1 |
435 | pushf |
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436 | jz .no_4 |
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437 | |||
438 | shr ecx, 1 |
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439 | pushf |
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440 | jz .no_8 |
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441 | |||
442 | .loop: |
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443 | add dl, [esi+1] |
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444 | adc dh, [esi+0] |
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445 | |||
446 | adc dl, [esi+3] |
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447 | adc dh, [esi+2] |
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448 | |||
449 | adc dl, [esi+5] |
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450 | adc dh, [esi+4] |
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451 | |||
452 | adc dl, [esi+7] |
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453 | adc dh, [esi+6] |
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454 | |||
455 | adc edx, 0 |
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456 | add esi, 8 |
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457 | |||
458 | dec ecx |
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459 | jnz .loop |
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460 | |||
461 | adc edx, 0 |
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462 | |||
463 | .no_8: |
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1249 | hidnplayr | 464 | popf |
1473 | hidnplayr | 465 | jnc .no_4 |
466 | |||
467 | add dl, [esi+1] |
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468 | adc dh, [esi+0] |
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469 | |||
470 | adc dl, [esi+3] |
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471 | adc dh, [esi+2] |
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472 | |||
473 | adc edx, 0 |
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474 | add esi, 4 |
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475 | |||
476 | .no_4: |
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477 | popf |
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478 | jnc .no_2 |
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479 | |||
480 | add dl, [esi+1] |
||
481 | adc dh, [esi+0] |
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482 | |||
483 | adc edx, 0 |
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1483 | hidnplayr | 484 | inc esi |
485 | inc esi |
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1473 | hidnplayr | 486 | |
487 | .no_2: |
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488 | popf |
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1249 | hidnplayr | 489 | jnc .end |
1159 | hidnplayr | 490 | |
1473 | hidnplayr | 491 | add dh, [esi+0] |
1251 | clevermous | 492 | adc edx, 0 |
1473 | hidnplayr | 493 | .end: |
494 | ret |
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1159 | hidnplayr | 495 | |
1249 | hidnplayr | 496 | ;----------------------------------------------------------------- |
497 | ; |
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498 | ; checksum_2 |
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499 | ; |
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500 | ; This function calculates the final ip/tcp/udp checksum for you |
||
501 | ; |
||
502 | ; IN: edx = semi-checksum |
||
503 | ; OUT: dx = checksum (in INET byte order) |
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504 | ; |
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505 | ;----------------------------------------------------------------- |
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506 | align 4 |
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507 | checksum_2: |
||
508 | |||
509 | mov ecx, edx |
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510 | shr ecx, 16 |
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511 | and edx, 0xffff |
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512 | add edx, ecx |
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513 | |||
1482 | hidnplayr | 514 | mov ecx, edx |
515 | shr ecx, 16 |
||
1529 | hidnplayr | 516 | add dx, cx |
517 | test dx, dx ; it seems that ZF is not set when CF is set :( |
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1249 | hidnplayr | 518 | not dx |
519 | jnz .not_zero |
||
520 | dec dx |
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521 | .not_zero: |
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522 | xchg dl, dh |
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523 | |||
1529 | hidnplayr | 524 | DEBUGF 1,"Checksum: %x\n", dx |
1249 | hidnplayr | 525 | |
526 | ret |
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527 | |||
528 | |||
529 | |||
1159 | hidnplayr | 530 | ;---------------------------------------------------------------- |
531 | ; |
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1171 | hidnplayr | 532 | ; System function to work with network devices (73) |
1159 | hidnplayr | 533 | ; |
534 | ;---------------------------------------------------------------- |
||
535 | align 4 |
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536 | sys_network: |
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537 | |||
1196 | hidnplayr | 538 | cmp ebx, -1 |
539 | jne @f |
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540 | |||
1514 | hidnplayr | 541 | mov eax, [NET_RUNNING] |
1196 | hidnplayr | 542 | jmp .return |
543 | |||
544 | @@: |
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1159 | hidnplayr | 545 | cmp bh, MAX_NET_DEVICES ; Check if device number exists |
546 | jge .doesnt_exist |
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547 | |||
548 | mov esi, ebx |
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549 | and esi, 0x0000ff00 |
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550 | shr esi, 6 |
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551 | |||
1514 | hidnplayr | 552 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
1159 | hidnplayr | 553 | je .doesnt_exist |
554 | |||
1514 | hidnplayr | 555 | test bl, bl ; 0 = Get device type (ethernet/token ring/...) |
1159 | hidnplayr | 556 | jnz @f |
1514 | hidnplayr | 557 | |
1192 | hidnplayr | 558 | xor eax, eax |
559 | jmp .return |
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1159 | hidnplayr | 560 | |
561 | |||
562 | @@: |
||
563 | dec bl ; 1 = Get device name |
||
564 | jnz @f |
||
565 | |||
1514 | hidnplayr | 566 | mov esi, [esi + NET_DRV_LIST] |
1519 | hidnplayr | 567 | mov esi, [esi + NET_DEVICE.name] |
1159 | hidnplayr | 568 | mov edi, ecx |
569 | |||
570 | mov ecx, 64 ; max length |
||
571 | repnz movsb |
||
572 | |||
1192 | hidnplayr | 573 | xor eax, eax |
574 | jmp .return |
||
1159 | hidnplayr | 575 | |
1192 | hidnplayr | 576 | @@: |
1159 | hidnplayr | 577 | |
1192 | hidnplayr | 578 | dec bl ; 2 = Reset the device |
579 | jnz @f |
||
580 | |||
1514 | hidnplayr | 581 | mov esi, [esi + NET_DRV_LIST] |
1519 | hidnplayr | 582 | call [esi + NET_DEVICE.reset] |
1192 | hidnplayr | 583 | jmp .return |
584 | |||
1159 | hidnplayr | 585 | @@: |
1192 | hidnplayr | 586 | |
587 | dec bl ; 3 = Stop driver for this device |
||
588 | jnz @f |
||
589 | |||
1514 | hidnplayr | 590 | mov esi, [esi + NET_DRV_LIST] |
1519 | hidnplayr | 591 | call [esi + NET_DEVICE.unload] |
1192 | hidnplayr | 592 | jmp .return |
593 | |||
594 | @@: |
||
1249 | hidnplayr | 595 | dec bl ; 4 = Get driver pointer |
596 | jnz @f |
||
1192 | hidnplayr | 597 | |
1249 | hidnplayr | 598 | ; ..; |
599 | |||
600 | |||
601 | @@: |
||
602 | ; ... ; 5 Get driver name |
||
603 | |||
1159 | hidnplayr | 604 | .doesnt_exist: |
605 | DEBUGF 1,"sys_network: invalid device/function specified!\n" |
||
606 | mov eax, -1 |
||
607 | |||
1192 | hidnplayr | 608 | .return: |
609 | mov [esp+28+4], eax |
||
1159 | hidnplayr | 610 | ret |
611 | |||
612 | |||
613 | ;---------------------------------------------------------------- |
||
614 | ; |
||
1514 | hidnplayr | 615 | ; System function to work with protocols (75) |
1159 | hidnplayr | 616 | ; |
617 | ;---------------------------------------------------------------- |
||
618 | align 4 |
||
619 | sys_protocols: |
||
620 | cmp bh, MAX_NET_DEVICES ; Check if device number exists |
||
621 | jge .doesnt_exist |
||
622 | |||
623 | mov esi, ebx |
||
624 | and esi, 0x0000ff00 |
||
1514 | hidnplayr | 625 | shr esi, 6 ; now we have the device num * 4 in esi |
626 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
||
1159 | hidnplayr | 627 | je .doesnt_exist |
628 | |||
629 | push .return ; return address (we will be using jumps instead of calls) |
||
630 | |||
631 | mov eax, ebx ; set ax to protocol number |
||
632 | shr eax, 16 ; |
||
633 | |||
634 | cmp ax , IP_PROTO_IP |
||
635 | je IPv4_API |
||
636 | |||
637 | cmp ax , IP_PROTO_ICMP |
||
638 | je ICMP_API |
||
639 | |||
640 | cmp ax , IP_PROTO_UDP |
||
641 | je UDP_API |
||
642 | |||
1171 | hidnplayr | 643 | cmp ax , IP_PROTO_TCP |
1254 | hidnplayr | 644 | je TCP_API |
1159 | hidnplayr | 645 | |
1171 | hidnplayr | 646 | cmp ax , ETHER_ARP |
1159 | hidnplayr | 647 | je ARP_API |
648 | |||
1519 | hidnplayr | 649 | cmp ax , 1337 ;;;;; |
1159 | hidnplayr | 650 | je ETH_API |
651 | |||
1171 | hidnplayr | 652 | add esp, 4 ; if we reached here, no function was called, so we need to balance stack |
1159 | hidnplayr | 653 | |
654 | .doesnt_exist: |
||
1519 | hidnplayr | 655 | DEBUGF 1,"sys_protocols: protocol %u doesnt exist on device %u!\n", ax, bh |
1159 | hidnplayr | 656 | mov eax, -1 |
657 | |||
658 | .return: |
||
1171 | hidnplayr | 659 | mov [esp+28+4], eax |
1257 | hidnplayr | 660 | ret |
1473 | hidnplayr | 661 | |
662 | |||
663 | __DEBUG_LEVEL__ equ __DEBUG_LEVEL_OLD__ |