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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: 1719 $ |
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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1719 | hidnplayr | 153 | |
1514 | hidnplayr | 154 | ;include "slip.inc" |
1719 | hidnplayr | 155 | ;include "pppoe.inc" |
1514 | hidnplayr | 156 | |
1187 | hidnplayr | 157 | include "ARP.inc" |
158 | include "IPv4.inc" |
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1514 | hidnplayr | 159 | |
160 | include "icmp.inc" |
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161 | include "udp.inc" |
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1249 | hidnplayr | 162 | include "tcp.inc" |
1159 | hidnplayr | 163 | |
1514 | hidnplayr | 164 | include "socket.inc" |
165 | |||
166 | |||
167 | |||
168 | align 4 |
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169 | uglobal |
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170 | |||
171 | NET_RUNNING dd ? |
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172 | NET_DRV_LIST rd MAX_NET_DEVICES |
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173 | |||
174 | endg |
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175 | |||
176 | |||
1257 | hidnplayr | 177 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 178 | ; |
179 | ; stack_init |
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180 | ; |
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181 | ; This function calls all network init procedures |
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182 | ; |
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183 | ; IN: / |
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184 | ; OUT: / |
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185 | ; |
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1257 | hidnplayr | 186 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 187 | align 4 |
188 | stack_init: |
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189 | |||
1514 | hidnplayr | 190 | ; Init the network drivers list |
191 | xor eax, eax |
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192 | mov edi, NET_RUNNING |
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193 | mov ecx, MAX_NET_DEVICES + 1 |
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194 | rep stosd |
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195 | |||
1529 | hidnplayr | 196 | ETH_init |
197 | ; SLIP_init |
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198 | ; PPPOE_init |
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1514 | hidnplayr | 199 | |
1529 | hidnplayr | 200 | IPv4_init |
201 | ICMP_init |
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1514 | hidnplayr | 202 | |
1529 | hidnplayr | 203 | ARP_init |
204 | UDP_init |
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205 | TCP_init |
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1514 | hidnplayr | 206 | |
1529 | hidnplayr | 207 | SOCKET_init |
1514 | hidnplayr | 208 | |
209 | mov [net_tmr_count], 0 |
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1159 | hidnplayr | 210 | |
211 | ret |
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212 | |||
213 | |||
1257 | hidnplayr | 214 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 215 | ; |
216 | ; stack_handler |
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217 | ; |
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1514 | hidnplayr | 218 | ; This function is called in kernel loop |
1159 | hidnplayr | 219 | ; |
220 | ; IN: / |
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221 | ; OUT: / |
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222 | ; |
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1257 | hidnplayr | 223 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 224 | align 4 |
225 | stack_handler: |
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226 | |||
1514 | hidnplayr | 227 | cmp [NET_RUNNING], 0 |
1257 | hidnplayr | 228 | je .exit |
1159 | hidnplayr | 229 | |
1318 | hidnplayr | 230 | ; Test for 10ms tick |
1257 | hidnplayr | 231 | mov eax, [timer_ticks] |
1514 | hidnplayr | 232 | cmp eax, [net_10ms] |
1257 | hidnplayr | 233 | je .exit |
1514 | hidnplayr | 234 | mov [net_10ms], eax |
1159 | hidnplayr | 235 | |
1519 | hidnplayr | 236 | test [net_10ms], 0x0f ; 160ms |
237 | jnz .exit |
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1249 | hidnplayr | 238 | |
1529 | hidnplayr | 239 | TCP_timer_160ms |
1159 | hidnplayr | 240 | |
1519 | hidnplayr | 241 | test [net_10ms], 0x3f ; 640ms |
242 | jnz .exit |
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243 | |||
1529 | hidnplayr | 244 | TCP_timer_640ms |
245 | ARP_decrease_entry_ttls |
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246 | IPv4_decrease_fragment_ttls |
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1159 | hidnplayr | 247 | |
248 | .exit: |
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1257 | hidnplayr | 249 | ret |
1159 | hidnplayr | 250 | |
251 | |||
1514 | hidnplayr | 252 | |
1249 | hidnplayr | 253 | ;----------------------------------------------------------------- |
254 | ; |
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1514 | hidnplayr | 255 | ; NET_Add_Device: |
256 | ; |
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257 | ; This function is called by the network drivers, |
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258 | ; to register each running NIC to the kernel |
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259 | ; |
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260 | ; IN: Pointer to device structure in ebx |
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261 | ; OUT: Device num in eax, -1 on error |
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262 | ; |
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263 | ;----------------------------------------------------------------- |
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264 | align 4 |
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265 | NET_add_device: |
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266 | |||
267 | DEBUGF 1,"NET_Add_Device: %x\n", ebx |
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268 | |||
269 | mov eax, [NET_RUNNING] |
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270 | cmp eax, MAX_NET_DEVICES |
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271 | jge .error |
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272 | |||
273 | ;---------------------------------- |
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274 | ; Check if device is already listed |
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275 | mov eax, ebx |
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276 | 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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277 | mov edi, NET_DRV_LIST |
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278 | |||
279 | repne scasd ; See if device is already in the list |
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280 | jz .error |
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281 | |||
282 | ;---------------------------- |
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283 | ; Find empty slot in the list |
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284 | xor eax, eax |
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285 | mov ecx, MAX_NET_DEVICES |
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286 | mov edi, NET_DRV_LIST |
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287 | |||
288 | repne scasd |
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289 | jnz .error |
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290 | |||
291 | sub edi, 4 |
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292 | |||
293 | cmp [ebx + NET_DEVICE.type], NET_TYPE_ETH |
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294 | je .ethernet |
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295 | |||
296 | cmp [ebx + NET_DEVICE.type], NET_TYPE_SLIP |
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297 | je .slip |
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298 | |||
299 | DEBUGF 1,"Unknown network device type: %u\n", [ebx + NET_DEVICE.type] |
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300 | jmp .error |
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301 | |||
302 | .ethernet: |
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1529 | hidnplayr | 303 | DEBUGF 1,"Trying to add an ethernet device\n" |
1514 | hidnplayr | 304 | |
305 | inc [ETH_RUNNING] ; Indicate that one more ethernet device is up and running |
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306 | jmp .add_it |
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307 | |||
308 | .slip: |
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1529 | hidnplayr | 309 | DEBUGF 1,"Trying to add a slip device\n" |
1514 | hidnplayr | 310 | ;;;; |
311 | jmp .error |
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312 | |||
313 | |||
314 | .add_it: |
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315 | |||
316 | ;----------------------------- |
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317 | ; Add device to the found slot |
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318 | mov [edi], ebx ; add device to list |
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319 | |||
320 | sub edi, NET_DRV_LIST ; Calculate device number in eax |
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321 | mov eax, edi ; |
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322 | shr eax, 2 |
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323 | |||
324 | inc [NET_RUNNING] ; Indicate that one more network device is up and running |
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325 | |||
326 | DEBUGF 1,"Device number: %u\n",eax |
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327 | ret |
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328 | |||
329 | .error: |
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330 | or eax, -1 |
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331 | DEBUGF 2,"Adding network device failed\n" |
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332 | ret |
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333 | |||
334 | |||
335 | |||
336 | ;----------------------------------------------------------------- |
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337 | ; |
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338 | ; NET_Remove_Device: |
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339 | ; |
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340 | ; This function is called by etwork drivers, |
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341 | ; to unregister network devices from the kernel |
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342 | ; |
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343 | ; IN: Pointer to device structure in ebx |
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344 | ; OUT: eax: -1 on error |
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345 | ; |
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346 | ;----------------------------------------------------------------- |
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347 | align 4 |
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348 | NET_remove_device: |
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349 | |||
350 | cmp [NET_RUNNING], 0 |
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351 | je .error |
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352 | |||
353 | ;---------------------------- |
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354 | ; Find the driver in the list |
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355 | |||
356 | mov eax, ebx |
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357 | mov ecx, MAX_NET_DEVICES |
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358 | mov edi, NET_DRV_LIST |
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359 | |||
360 | repne scasd |
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361 | jnz .error |
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362 | |||
363 | ;------------------------ |
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364 | ; Remove it from the list |
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365 | |||
366 | xor eax, eax |
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367 | mov dword [edi-4], eax |
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368 | |||
369 | dec [NET_RUNNING] |
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370 | ret |
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371 | |||
372 | .error: |
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373 | or eax, -1 |
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374 | ret |
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375 | |||
376 | |||
377 | |||
378 | ;----------------------------------------------------------------- |
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379 | ; |
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380 | ; NET_ptr_to_num |
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381 | ; |
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382 | ; IN: ebx = ptr to device struct |
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383 | ; OUT: edi = -1 on error, device number otherwise |
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384 | ; |
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385 | ;----------------------------------------------------------------- |
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386 | align 4 |
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387 | NET_ptr_to_num: |
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388 | push ecx |
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389 | |||
390 | mov ecx, MAX_NET_DEVICES |
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391 | mov edi, NET_DRV_LIST |
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392 | |||
393 | .loop: |
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394 | cmp ebx, [edi] |
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395 | jz .found |
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396 | add edi, 4 |
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397 | dec ecx |
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398 | jnz .loop |
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399 | |||
400 | ; repnz scasd could work too if eax is used instead of ebx! |
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401 | |||
402 | or edi, -1 |
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403 | |||
404 | pop ecx |
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405 | ret |
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406 | |||
407 | .found: |
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408 | sub edi, NET_DRV_LIST |
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409 | shr edi, 2 |
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410 | |||
411 | pop ecx |
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412 | ret |
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413 | |||
414 | ;----------------------------------------------------------------- |
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415 | ; |
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1249 | hidnplayr | 416 | ; checksum_1 |
417 | ; |
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1482 | hidnplayr | 418 | ; This is the first of two functions needed to calculate a checksum. |
1249 | hidnplayr | 419 | ; |
1473 | hidnplayr | 420 | ; IN: edx = start offset for semi-checksum |
1249 | hidnplayr | 421 | ; esi = pointer to data |
422 | ; ecx = data size |
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423 | ; OUT: edx = semi-checksum |
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424 | ; |
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1473 | hidnplayr | 425 | ; |
426 | ; Code was optimized by diamond |
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427 | ; |
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1249 | hidnplayr | 428 | ;----------------------------------------------------------------- |
429 | align 4 |
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430 | checksum_1: |
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1159 | hidnplayr | 431 | |
1249 | hidnplayr | 432 | shr ecx, 1 |
433 | pushf |
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1473 | hidnplayr | 434 | jz .no_2 |
1159 | hidnplayr | 435 | |
1473 | hidnplayr | 436 | shr ecx, 1 |
437 | pushf |
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438 | jz .no_4 |
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439 | |||
440 | shr ecx, 1 |
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441 | pushf |
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442 | jz .no_8 |
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443 | |||
444 | .loop: |
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445 | add dl, [esi+1] |
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446 | adc dh, [esi+0] |
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447 | |||
448 | adc dl, [esi+3] |
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449 | adc dh, [esi+2] |
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450 | |||
451 | adc dl, [esi+5] |
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452 | adc dh, [esi+4] |
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453 | |||
454 | adc dl, [esi+7] |
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455 | adc dh, [esi+6] |
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456 | |||
457 | adc edx, 0 |
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458 | add esi, 8 |
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459 | |||
460 | dec ecx |
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461 | jnz .loop |
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462 | |||
463 | adc edx, 0 |
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464 | |||
465 | .no_8: |
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1249 | hidnplayr | 466 | popf |
1473 | hidnplayr | 467 | jnc .no_4 |
468 | |||
469 | add dl, [esi+1] |
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470 | adc dh, [esi+0] |
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471 | |||
472 | adc dl, [esi+3] |
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473 | adc dh, [esi+2] |
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474 | |||
475 | adc edx, 0 |
||
476 | add esi, 4 |
||
477 | |||
478 | .no_4: |
||
479 | popf |
||
480 | jnc .no_2 |
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481 | |||
482 | add dl, [esi+1] |
||
483 | adc dh, [esi+0] |
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484 | |||
485 | adc edx, 0 |
||
1483 | hidnplayr | 486 | inc esi |
487 | inc esi |
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1473 | hidnplayr | 488 | |
489 | .no_2: |
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490 | popf |
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1249 | hidnplayr | 491 | jnc .end |
1159 | hidnplayr | 492 | |
1473 | hidnplayr | 493 | add dh, [esi+0] |
1251 | clevermous | 494 | adc edx, 0 |
1473 | hidnplayr | 495 | .end: |
496 | ret |
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1159 | hidnplayr | 497 | |
1249 | hidnplayr | 498 | ;----------------------------------------------------------------- |
499 | ; |
||
500 | ; checksum_2 |
||
501 | ; |
||
502 | ; This function calculates the final ip/tcp/udp checksum for you |
||
503 | ; |
||
504 | ; IN: edx = semi-checksum |
||
505 | ; OUT: dx = checksum (in INET byte order) |
||
506 | ; |
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507 | ;----------------------------------------------------------------- |
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508 | align 4 |
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509 | checksum_2: |
||
510 | |||
511 | mov ecx, edx |
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512 | shr ecx, 16 |
||
513 | and edx, 0xffff |
||
514 | add edx, ecx |
||
515 | |||
1482 | hidnplayr | 516 | mov ecx, edx |
517 | shr ecx, 16 |
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1529 | hidnplayr | 518 | add dx, cx |
519 | test dx, dx ; it seems that ZF is not set when CF is set :( |
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1249 | hidnplayr | 520 | not dx |
521 | jnz .not_zero |
||
522 | dec dx |
||
523 | .not_zero: |
||
524 | xchg dl, dh |
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525 | |||
1529 | hidnplayr | 526 | DEBUGF 1,"Checksum: %x\n", dx |
1249 | hidnplayr | 527 | |
528 | ret |
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529 | |||
530 | |||
531 | |||
1159 | hidnplayr | 532 | ;---------------------------------------------------------------- |
533 | ; |
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1171 | hidnplayr | 534 | ; System function to work with network devices (73) |
1159 | hidnplayr | 535 | ; |
536 | ;---------------------------------------------------------------- |
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537 | align 4 |
||
538 | sys_network: |
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539 | |||
1196 | hidnplayr | 540 | cmp ebx, -1 |
541 | jne @f |
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542 | |||
1514 | hidnplayr | 543 | mov eax, [NET_RUNNING] |
1196 | hidnplayr | 544 | jmp .return |
545 | |||
546 | @@: |
||
1159 | hidnplayr | 547 | cmp bh, MAX_NET_DEVICES ; Check if device number exists |
548 | jge .doesnt_exist |
||
549 | |||
550 | mov esi, ebx |
||
551 | and esi, 0x0000ff00 |
||
552 | shr esi, 6 |
||
553 | |||
1514 | hidnplayr | 554 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
1159 | hidnplayr | 555 | je .doesnt_exist |
556 | |||
1514 | hidnplayr | 557 | test bl, bl ; 0 = Get device type (ethernet/token ring/...) |
1159 | hidnplayr | 558 | jnz @f |
1514 | hidnplayr | 559 | |
1192 | hidnplayr | 560 | xor eax, eax |
561 | jmp .return |
||
1159 | hidnplayr | 562 | |
563 | |||
564 | @@: |
||
565 | dec bl ; 1 = Get device name |
||
566 | jnz @f |
||
567 | |||
1514 | hidnplayr | 568 | mov esi, [esi + NET_DRV_LIST] |
1519 | hidnplayr | 569 | mov esi, [esi + NET_DEVICE.name] |
1159 | hidnplayr | 570 | mov edi, ecx |
571 | |||
572 | mov ecx, 64 ; max length |
||
573 | repnz movsb |
||
574 | |||
1192 | hidnplayr | 575 | xor eax, eax |
576 | jmp .return |
||
1159 | hidnplayr | 577 | |
1192 | hidnplayr | 578 | @@: |
1159 | hidnplayr | 579 | |
1192 | hidnplayr | 580 | dec bl ; 2 = Reset the device |
581 | jnz @f |
||
582 | |||
1514 | hidnplayr | 583 | mov esi, [esi + NET_DRV_LIST] |
1519 | hidnplayr | 584 | call [esi + NET_DEVICE.reset] |
1192 | hidnplayr | 585 | jmp .return |
586 | |||
1159 | hidnplayr | 587 | @@: |
1192 | hidnplayr | 588 | |
589 | dec bl ; 3 = Stop driver for this device |
||
590 | jnz @f |
||
591 | |||
1514 | hidnplayr | 592 | mov esi, [esi + NET_DRV_LIST] |
1519 | hidnplayr | 593 | call [esi + NET_DEVICE.unload] |
1192 | hidnplayr | 594 | jmp .return |
595 | |||
596 | @@: |
||
1249 | hidnplayr | 597 | dec bl ; 4 = Get driver pointer |
598 | jnz @f |
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1192 | hidnplayr | 599 | |
1249 | hidnplayr | 600 | ; ..; |
601 | |||
602 | |||
603 | @@: |
||
604 | ; ... ; 5 Get driver name |
||
605 | |||
1159 | hidnplayr | 606 | .doesnt_exist: |
607 | DEBUGF 1,"sys_network: invalid device/function specified!\n" |
||
608 | mov eax, -1 |
||
609 | |||
1192 | hidnplayr | 610 | .return: |
611 | mov [esp+28+4], eax |
||
1159 | hidnplayr | 612 | ret |
613 | |||
614 | |||
615 | ;---------------------------------------------------------------- |
||
616 | ; |
||
1514 | hidnplayr | 617 | ; System function to work with protocols (75) |
1159 | hidnplayr | 618 | ; |
619 | ;---------------------------------------------------------------- |
||
620 | align 4 |
||
621 | sys_protocols: |
||
622 | cmp bh, MAX_NET_DEVICES ; Check if device number exists |
||
623 | jge .doesnt_exist |
||
624 | |||
625 | mov esi, ebx |
||
626 | and esi, 0x0000ff00 |
||
1514 | hidnplayr | 627 | shr esi, 6 ; now we have the device num * 4 in esi |
628 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
||
1159 | hidnplayr | 629 | je .doesnt_exist |
630 | |||
631 | push .return ; return address (we will be using jumps instead of calls) |
||
632 | |||
633 | mov eax, ebx ; set ax to protocol number |
||
634 | shr eax, 16 ; |
||
635 | |||
636 | cmp ax , IP_PROTO_IP |
||
637 | je IPv4_API |
||
638 | |||
639 | cmp ax , IP_PROTO_ICMP |
||
640 | je ICMP_API |
||
641 | |||
642 | cmp ax , IP_PROTO_UDP |
||
643 | je UDP_API |
||
644 | |||
1171 | hidnplayr | 645 | cmp ax , IP_PROTO_TCP |
1254 | hidnplayr | 646 | je TCP_API |
1159 | hidnplayr | 647 | |
1171 | hidnplayr | 648 | cmp ax , ETHER_ARP |
1159 | hidnplayr | 649 | je ARP_API |
650 | |||
1519 | hidnplayr | 651 | cmp ax , 1337 ;;;;; |
1159 | hidnplayr | 652 | je ETH_API |
653 | |||
1171 | hidnplayr | 654 | add esp, 4 ; if we reached here, no function was called, so we need to balance stack |
1159 | hidnplayr | 655 | |
656 | .doesnt_exist: |
||
1519 | hidnplayr | 657 | DEBUGF 1,"sys_protocols: protocol %u doesnt exist on device %u!\n", ax, bh |
1159 | hidnplayr | 658 | mov eax, -1 |
659 | |||
660 | .return: |
||
1171 | hidnplayr | 661 | mov [esp+28+4], eax |
1257 | hidnplayr | 662 | ret |
1473 | hidnplayr | 663 | |
664 | |||
665 | __DEBUG_LEVEL__ equ __DEBUG_LEVEL_OLD__ |