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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: 2382 $ |
1159 | hidnplayr | 25 | |
2366 | 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 |
2366 | hidnplayr | 30 | net_10ms dd ? |
31 | net_tmr_count dw ? |
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1159 | hidnplayr | 32 | endg |
33 | |||
2366 | hidnplayr | 34 | MAX_NET_DEVICES equ 16 |
1159 | hidnplayr | 35 | |
2366 | 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 |
2366 | hidnplayr | 40 | ETHER_ARP equ 0x0608 |
41 | ETHER_IPv4 equ 0x0008 |
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42 | ETHER_PPP_DISCOVERY equ 0x6388 |
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43 | ETHER_PPP_SESSION equ 0x6488 |
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1185 | hidnplayr | 44 | |
1514 | hidnplayr | 45 | ;Protocol family |
2366 | hidnplayr | 46 | AF_UNSPEC equ 0 |
47 | AF_UNIX equ 1 |
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48 | AF_INET4 equ 2 |
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49 | AF_INET6 equ 10 |
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1159 | hidnplayr | 50 | |
1514 | hidnplayr | 51 | ; Internet protocol numbers |
2366 | 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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1159 | hidnplayr | 56 | |
1200 | hidnplayr | 57 | ; Socket types |
2366 | 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 |
2366 | hidnplayr | 63 | SO_ACCEPTCON equ 1 shl 0 |
64 | SO_BROADCAST equ 1 shl 1 |
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65 | SO_DEBUG equ 1 shl 2 |
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66 | SO_DONTROUTE equ 1 shl 3 |
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67 | SO_KEEPALIVE equ 1 shl 4 |
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68 | SO_OOBINLINE equ 1 shl 5 |
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69 | SO_REUSEADDR equ 1 shl 6 |
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70 | SO_REUSEPORT equ 1 shl 7 |
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71 | SO_USELOOPBACK equ 1 shl 8 |
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1159 | hidnplayr | 72 | |
1885 | hidnplayr | 73 | |
1773 | hidnplayr | 74 | ; Socket States |
2366 | hidnplayr | 75 | SS_NOFDREF equ 0x001 ; no file table ref any more |
76 | SS_ISCONNECTED equ 0x002 ; socket connected to a peer |
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77 | SS_ISCONNECTING equ 0x004 ; in process of connecting to peer |
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78 | SS_ISDISCONNECTING equ 0x008 ; in process of disconnecting |
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79 | SS_CANTSENDMORE equ 0x010 ; can't send more data to peer |
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80 | SS_CANTRCVMORE equ 0x020 ; can't receive more data from peer |
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81 | SS_RCVATMARK equ 0x040 ; at mark on input |
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82 | SS_ISABORTING equ 0x080 ; aborting fd references - close() |
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83 | SS_RESTARTSYS equ 0x100 ; restart blocked system calls |
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84 | SS_ISDISCONNECTED equ 0x800 ; socket disconnected from peer |
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1773 | hidnplayr | 85 | |
2366 | hidnplayr | 86 | SS_ASYNC equ 0x100 ; async i/o notify |
87 | SS_ISCONFIRMING equ 0x200 ; deciding to accept connection req |
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88 | SS_MORETOCOME equ 0x400 |
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1773 | hidnplayr | 89 | |
90 | |||
2366 | hidnplayr | 91 | SOCKET_MAXDATA equ 4096*32 ; must be 4096*(power of 2) where 'power of 2' is at least 8 |
1254 | hidnplayr | 92 | |
1514 | hidnplayr | 93 | ; Network driver types |
2366 | hidnplayr | 94 | NET_TYPE_ETH equ 1 |
95 | NET_TYPE_SLIP equ 2 |
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1254 | hidnplayr | 96 | |
2366 | hidnplayr | 97 | MAX_backlog equ 20 ; maximum backlog for stream sockets |
1254 | hidnplayr | 98 | |
1716 | hidnplayr | 99 | ; Error Codes |
2366 | hidnplayr | 100 | ENOBUFS equ 55 |
101 | ECONNREFUSED equ 61 |
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102 | ECONNRESET equ 52 |
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103 | ETIMEDOUT equ 60 |
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104 | ECONNABORTED equ 53 |
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1529 | hidnplayr | 105 | |
1716 | hidnplayr | 106 | |
107 | |||
2366 | hidnplayr | 108 | struct NET_DEVICE |
1254 | hidnplayr | 109 | |
2366 | hidnplayr | 110 | type dd ? ; Type field |
111 | mtu dd ? ; Maximal Transmission Unit |
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112 | name dd ? ; Ptr to 0 terminated string |
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1519 | hidnplayr | 113 | |
2366 | hidnplayr | 114 | unload dd ? ; Ptrs to driver functions |
115 | reset dd ? ; |
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116 | transmit dd ? ; |
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1519 | hidnplayr | 117 | |
2366 | hidnplayr | 118 | bytes_tx dq ? ; Statistics, updated by the driver |
119 | bytes_rx dq ? ; |
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120 | packets_tx dd ? ; |
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121 | packets_rx dd ? ; |
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1519 | hidnplayr | 122 | |
2305 | hidnplayr | 123 | ; hwacc dd ? ; bitmask stating available hardware accelerations (offload engines) |
1519 | hidnplayr | 124 | |
2305 | hidnplayr | 125 | ends |
1529 | hidnplayr | 126 | |
1254 | hidnplayr | 127 | |
1514 | hidnplayr | 128 | ; Exactly as it says.. |
1318 | hidnplayr | 129 | macro pseudo_random reg { |
2366 | hidnplayr | 130 | add reg, [esp] |
131 | rol reg, 5 |
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132 | xor reg, [timer_ticks] |
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133 | add reg, [CPU_FREQ] |
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134 | imul reg, 214013 |
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135 | xor reg, 0xdeadbeef |
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136 | rol reg, 9 |
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1514 | hidnplayr | 137 | } |
1318 | hidnplayr | 138 | |
1543 | hidnplayr | 139 | macro ntohd reg { |
1318 | hidnplayr | 140 | |
2366 | hidnplayr | 141 | rol word reg, 8 |
142 | rol dword reg, 16 |
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143 | rol word reg , 8 |
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1514 | hidnplayr | 144 | |
1318 | hidnplayr | 145 | } |
146 | |||
1543 | hidnplayr | 147 | macro ntohw reg { |
1514 | hidnplayr | 148 | |
2366 | hidnplayr | 149 | rol word reg, 8 |
1514 | hidnplayr | 150 | |
151 | } |
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152 | |||
2382 | hidnplayr | 153 | |
154 | wait_mutex: ; stub |
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155 | inc dword [ebx] |
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156 | |||
157 | ret |
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158 | |||
159 | |||
1159 | hidnplayr | 160 | include "queue.inc" |
1514 | hidnplayr | 161 | |
162 | include "ethernet.inc" |
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1719 | hidnplayr | 163 | |
1514 | hidnplayr | 164 | ;include "slip.inc" |
1719 | hidnplayr | 165 | ;include "pppoe.inc" |
1514 | hidnplayr | 166 | |
1187 | hidnplayr | 167 | include "ARP.inc" |
168 | include "IPv4.inc" |
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1514 | hidnplayr | 169 | |
170 | include "icmp.inc" |
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171 | include "udp.inc" |
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1249 | hidnplayr | 172 | include "tcp.inc" |
1159 | hidnplayr | 173 | |
1514 | hidnplayr | 174 | include "socket.inc" |
175 | |||
176 | |||
177 | |||
178 | align 4 |
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179 | uglobal |
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180 | |||
2366 | hidnplayr | 181 | NET_RUNNING dd ? |
182 | NET_DEFAULT dd ? |
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183 | NET_DRV_LIST rd MAX_NET_DEVICES |
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1514 | hidnplayr | 184 | |
185 | endg |
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186 | |||
187 | |||
1257 | hidnplayr | 188 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 189 | ; |
190 | ; stack_init |
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191 | ; |
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192 | ; This function calls all network init procedures |
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193 | ; |
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194 | ; IN: / |
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195 | ; OUT: / |
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196 | ; |
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1257 | hidnplayr | 197 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 198 | align 4 |
199 | stack_init: |
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200 | |||
1514 | hidnplayr | 201 | ; Init the network drivers list |
2366 | hidnplayr | 202 | xor eax, eax |
203 | mov edi, NET_RUNNING |
||
204 | mov ecx, (MAX_NET_DEVICES + 2) |
||
205 | rep stosd |
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1514 | hidnplayr | 206 | |
1529 | hidnplayr | 207 | ; SLIP_init |
208 | ; PPPOE_init |
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1514 | hidnplayr | 209 | |
2366 | hidnplayr | 210 | IPv4_init |
211 | ICMP_init |
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1514 | hidnplayr | 212 | |
2366 | hidnplayr | 213 | ARP_init |
214 | UDP_init |
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215 | TCP_init |
||
1514 | hidnplayr | 216 | |
2366 | hidnplayr | 217 | SOCKET_init |
1514 | hidnplayr | 218 | |
2366 | hidnplayr | 219 | mov [net_tmr_count], 0 |
1159 | hidnplayr | 220 | |
2366 | hidnplayr | 221 | ret |
1159 | hidnplayr | 222 | |
223 | |||
1257 | hidnplayr | 224 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 225 | ; |
226 | ; stack_handler |
||
227 | ; |
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1514 | hidnplayr | 228 | ; This function is called in kernel loop |
1159 | hidnplayr | 229 | ; |
230 | ; IN: / |
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231 | ; OUT: / |
||
232 | ; |
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1257 | hidnplayr | 233 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 234 | align 4 |
235 | stack_handler: |
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236 | |||
2366 | hidnplayr | 237 | cmp [NET_RUNNING], 0 |
238 | je .exit |
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1159 | hidnplayr | 239 | |
2366 | hidnplayr | 240 | ; Test for 10ms tick |
241 | mov eax, [timer_ticks] |
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242 | cmp eax, [net_10ms] |
||
243 | je .exit |
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244 | mov [net_10ms], eax |
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1159 | hidnplayr | 245 | |
2366 | hidnplayr | 246 | test [net_10ms], 0x0f ; 160ms |
247 | jnz .exit |
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1249 | hidnplayr | 248 | |
2366 | hidnplayr | 249 | TCP_timer_160ms |
1159 | hidnplayr | 250 | |
2366 | hidnplayr | 251 | test [net_10ms], 0x3f ; 640ms |
252 | jnz .exit |
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1519 | hidnplayr | 253 | |
2366 | hidnplayr | 254 | TCP_timer_640ms |
255 | ARP_decrease_entry_ttls |
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256 | IPv4_decrease_fragment_ttls |
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1159 | hidnplayr | 257 | |
258 | .exit: |
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2366 | hidnplayr | 259 | ret |
1159 | hidnplayr | 260 | |
261 | |||
1514 | hidnplayr | 262 | |
1249 | hidnplayr | 263 | ;----------------------------------------------------------------- |
264 | ; |
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2220 | hidnplayr | 265 | ; NET_add_device: |
1514 | hidnplayr | 266 | ; |
267 | ; This function is called by the network drivers, |
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268 | ; to register each running NIC to the kernel |
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269 | ; |
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270 | ; IN: Pointer to device structure in ebx |
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271 | ; OUT: Device num in eax, -1 on error |
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272 | ; |
||
273 | ;----------------------------------------------------------------- |
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274 | align 4 |
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275 | NET_add_device: |
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276 | |||
2366 | hidnplayr | 277 | DEBUGF 1,"NET_Add_Device: %x\n", ebx ;;; TODO: use mutex to lock net device list |
1514 | hidnplayr | 278 | |
2366 | hidnplayr | 279 | mov eax, [NET_RUNNING] |
280 | cmp eax, MAX_NET_DEVICES |
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281 | jae .error |
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1514 | hidnplayr | 282 | |
283 | ;---------------------------------- |
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284 | ; Check if device is already listed |
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2366 | hidnplayr | 285 | mov eax, ebx |
286 | 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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287 | mov edi, NET_DRV_LIST |
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1514 | hidnplayr | 288 | |
2366 | hidnplayr | 289 | repne scasd ; See if device is already in the list |
290 | jz .error |
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1514 | hidnplayr | 291 | |
292 | ;---------------------------- |
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293 | ; Find empty slot in the list |
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2366 | hidnplayr | 294 | xor eax, eax |
295 | mov ecx, MAX_NET_DEVICES |
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296 | mov edi, NET_DRV_LIST |
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1514 | hidnplayr | 297 | |
2366 | hidnplayr | 298 | repne scasd |
299 | jnz .error |
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1514 | hidnplayr | 300 | |
2366 | hidnplayr | 301 | sub edi, 4 |
1514 | hidnplayr | 302 | |
2220 | hidnplayr | 303 | ;----------------------------- |
304 | ; Add device to the found slot |
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2366 | hidnplayr | 305 | mov [edi], ebx ; add device to list |
1514 | hidnplayr | 306 | |
2366 | hidnplayr | 307 | mov eax, edi ; Calculate device number in eax |
308 | sub eax, NET_DRV_LIST |
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309 | shr eax, 2 |
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1514 | hidnplayr | 310 | |
2366 | hidnplayr | 311 | inc [NET_RUNNING] ; Indicate that one more network device is up and running |
1514 | hidnplayr | 312 | |
2366 | hidnplayr | 313 | cmp eax, 1 ; If it's the first network device, try to set it as default |
314 | jne @f |
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315 | push eax |
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316 | call NET_set_default |
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317 | pop eax |
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2220 | hidnplayr | 318 | @@: |
1514 | hidnplayr | 319 | |
2366 | hidnplayr | 320 | DEBUGF 1,"Device number: %u\n", eax |
321 | ret |
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1514 | hidnplayr | 322 | |
2220 | hidnplayr | 323 | .error: |
2366 | hidnplayr | 324 | or eax, -1 |
325 | DEBUGF 2,"Adding network device failed\n" |
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326 | ret |
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1514 | hidnplayr | 327 | |
328 | |||
329 | |||
2220 | hidnplayr | 330 | ;----------------------------------------------------------------- |
331 | ; |
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332 | ; NET_set_default |
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333 | ; |
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334 | ; API to set the default interface |
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335 | ; |
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336 | ; IN: Device num in eax |
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337 | ; OUT: Device num in eax, -1 on error |
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338 | ; |
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339 | ;----------------------------------------------------------------- |
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340 | align 4 |
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341 | NET_set_default: |
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1514 | hidnplayr | 342 | |
2366 | hidnplayr | 343 | DEBUGF 1,"NET_set_default %x\n", eax |
1514 | hidnplayr | 344 | |
2366 | hidnplayr | 345 | cmp eax, MAX_NET_DEVICES |
346 | jae .error |
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1514 | hidnplayr | 347 | |
2366 | hidnplayr | 348 | cmp [NET_DRV_LIST+eax*4], 0 |
349 | je .error |
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2220 | hidnplayr | 350 | |
2366 | hidnplayr | 351 | mov [NET_DEFAULT], eax |
2220 | hidnplayr | 352 | |
2366 | hidnplayr | 353 | DEBUGF 1,"Device number %u is now default!\n", eax |
354 | ret |
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1514 | hidnplayr | 355 | |
356 | .error: |
||
2366 | hidnplayr | 357 | or eax, -1 |
358 | DEBUGF 2,"Setting default network device failed\n" |
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359 | ret |
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1514 | hidnplayr | 360 | |
361 | |||
362 | ;----------------------------------------------------------------- |
||
363 | ; |
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364 | ; NET_Remove_Device: |
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365 | ; |
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366 | ; This function is called by etwork drivers, |
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367 | ; to unregister network devices from the kernel |
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2220 | hidnplayr | 368 | ; d |
1514 | hidnplayr | 369 | ; IN: Pointer to device structure in ebx |
370 | ; OUT: eax: -1 on error |
||
371 | ; |
||
372 | ;----------------------------------------------------------------- |
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373 | align 4 |
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374 | NET_remove_device: |
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375 | |||
2366 | hidnplayr | 376 | cmp [NET_RUNNING], 0 |
377 | je .error |
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1514 | hidnplayr | 378 | |
2366 | hidnplayr | 379 | cmp [NET_DRV_LIST], ebx |
380 | jne @f |
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381 | mov [NET_DRV_LIST], 0 |
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382 | cmp [NET_RUNNING], 1 |
||
383 | je @f |
||
384 | ; there are still active devices, find one and make it default |
||
385 | xor eax, eax |
||
386 | mov ecx, MAX_NET_DEVICES |
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387 | mov edi, NET_DRV_LIST |
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388 | repe scasd |
||
389 | je @f |
||
390 | shr edi, 2 |
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391 | dec edi |
||
392 | mov [NET_DEFAULT], edi |
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2220 | hidnplayr | 393 | @@: |
394 | |||
1514 | hidnplayr | 395 | ;---------------------------- |
396 | ; Find the driver in the list |
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397 | |||
2366 | hidnplayr | 398 | mov eax, ebx |
399 | mov ecx, MAX_NET_DEVICES |
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400 | mov edi, NET_DRV_LIST+4 |
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1514 | hidnplayr | 401 | |
2366 | hidnplayr | 402 | repne scasd |
403 | jnz .error |
||
1514 | hidnplayr | 404 | |
405 | ;------------------------ |
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406 | ; Remove it from the list |
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407 | |||
2366 | hidnplayr | 408 | xor eax, eax |
409 | mov dword [edi-4], eax |
||
1514 | hidnplayr | 410 | |
2366 | hidnplayr | 411 | dec [NET_RUNNING] |
412 | ret |
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1514 | hidnplayr | 413 | |
414 | .error: |
||
2366 | hidnplayr | 415 | or eax, -1 |
416 | ret |
||
1514 | hidnplayr | 417 | |
418 | |||
419 | |||
420 | ;----------------------------------------------------------------- |
||
421 | ; |
||
422 | ; NET_ptr_to_num |
||
423 | ; |
||
424 | ; IN: ebx = ptr to device struct |
||
425 | ; OUT: edi = -1 on error, device number otherwise |
||
426 | ; |
||
427 | ;----------------------------------------------------------------- |
||
428 | align 4 |
||
429 | NET_ptr_to_num: |
||
2366 | hidnplayr | 430 | push ecx |
1514 | hidnplayr | 431 | |
2366 | hidnplayr | 432 | mov ecx, MAX_NET_DEVICES |
433 | mov edi, NET_DRV_LIST |
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1514 | hidnplayr | 434 | |
435 | .loop: |
||
2366 | hidnplayr | 436 | cmp ebx, [edi] |
437 | jz .found |
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438 | add edi, 4 |
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439 | dec ecx |
||
440 | jnz .loop |
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1514 | hidnplayr | 441 | |
2366 | hidnplayr | 442 | ; repnz scasd could work too if eax is used instead of ebx! |
1514 | hidnplayr | 443 | |
2366 | hidnplayr | 444 | or edi, -1 |
1514 | hidnplayr | 445 | |
2366 | hidnplayr | 446 | pop ecx |
447 | ret |
||
1514 | hidnplayr | 448 | |
449 | .found: |
||
2366 | hidnplayr | 450 | sub edi, NET_DRV_LIST |
451 | shr edi, 2 |
||
1514 | hidnplayr | 452 | |
2366 | hidnplayr | 453 | pop ecx |
454 | ret |
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1514 | hidnplayr | 455 | |
456 | ;----------------------------------------------------------------- |
||
457 | ; |
||
1249 | hidnplayr | 458 | ; checksum_1 |
459 | ; |
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1482 | hidnplayr | 460 | ; This is the first of two functions needed to calculate a checksum. |
1249 | hidnplayr | 461 | ; |
1473 | hidnplayr | 462 | ; IN: edx = start offset for semi-checksum |
1249 | hidnplayr | 463 | ; esi = pointer to data |
464 | ; ecx = data size |
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465 | ; OUT: edx = semi-checksum |
||
466 | ; |
||
1473 | hidnplayr | 467 | ; |
468 | ; Code was optimized by diamond |
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469 | ; |
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1249 | hidnplayr | 470 | ;----------------------------------------------------------------- |
471 | align 4 |
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472 | checksum_1: |
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1159 | hidnplayr | 473 | |
2366 | hidnplayr | 474 | shr ecx, 1 |
475 | pushf |
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476 | jz .no_2 |
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1159 | hidnplayr | 477 | |
2366 | hidnplayr | 478 | shr ecx, 1 |
479 | pushf |
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480 | jz .no_4 |
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1473 | hidnplayr | 481 | |
2366 | hidnplayr | 482 | shr ecx, 1 |
483 | pushf |
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484 | jz .no_8 |
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1473 | hidnplayr | 485 | |
486 | .loop: |
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2366 | hidnplayr | 487 | add dl, [esi+1] |
488 | adc dh, [esi+0] |
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1473 | hidnplayr | 489 | |
2366 | hidnplayr | 490 | adc dl, [esi+3] |
491 | adc dh, [esi+2] |
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1473 | hidnplayr | 492 | |
2366 | hidnplayr | 493 | adc dl, [esi+5] |
494 | adc dh, [esi+4] |
||
1473 | hidnplayr | 495 | |
2366 | hidnplayr | 496 | adc dl, [esi+7] |
497 | adc dh, [esi+6] |
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1473 | hidnplayr | 498 | |
2366 | hidnplayr | 499 | adc edx, 0 |
500 | add esi, 8 |
||
1473 | hidnplayr | 501 | |
2366 | hidnplayr | 502 | dec ecx |
503 | jnz .loop |
||
1473 | hidnplayr | 504 | |
2366 | hidnplayr | 505 | adc edx, 0 |
1473 | hidnplayr | 506 | |
507 | .no_8: |
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2366 | hidnplayr | 508 | popf |
509 | jnc .no_4 |
||
1473 | hidnplayr | 510 | |
2366 | hidnplayr | 511 | add dl, [esi+1] |
512 | adc dh, [esi+0] |
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1473 | hidnplayr | 513 | |
2366 | hidnplayr | 514 | adc dl, [esi+3] |
515 | adc dh, [esi+2] |
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1473 | hidnplayr | 516 | |
2366 | hidnplayr | 517 | adc edx, 0 |
518 | add esi, 4 |
||
1473 | hidnplayr | 519 | |
520 | .no_4: |
||
2366 | hidnplayr | 521 | popf |
522 | jnc .no_2 |
||
1473 | hidnplayr | 523 | |
2366 | hidnplayr | 524 | add dl, [esi+1] |
525 | adc dh, [esi+0] |
||
1473 | hidnplayr | 526 | |
2366 | hidnplayr | 527 | adc edx, 0 |
528 | inc esi |
||
529 | inc esi |
||
1473 | hidnplayr | 530 | |
531 | .no_2: |
||
2366 | hidnplayr | 532 | popf |
533 | jnc .end |
||
1159 | hidnplayr | 534 | |
2366 | hidnplayr | 535 | add dh, [esi+0] |
536 | adc edx, 0 |
||
1473 | hidnplayr | 537 | .end: |
2366 | hidnplayr | 538 | ret |
1159 | hidnplayr | 539 | |
1249 | hidnplayr | 540 | ;----------------------------------------------------------------- |
541 | ; |
||
542 | ; checksum_2 |
||
543 | ; |
||
544 | ; This function calculates the final ip/tcp/udp checksum for you |
||
545 | ; |
||
546 | ; IN: edx = semi-checksum |
||
547 | ; OUT: dx = checksum (in INET byte order) |
||
548 | ; |
||
549 | ;----------------------------------------------------------------- |
||
550 | align 4 |
||
551 | checksum_2: |
||
552 | |||
2366 | hidnplayr | 553 | mov ecx, edx |
554 | shr ecx, 16 |
||
555 | and edx, 0xffff |
||
556 | add edx, ecx |
||
1249 | hidnplayr | 557 | |
2366 | hidnplayr | 558 | mov ecx, edx |
559 | shr ecx, 16 |
||
560 | add dx, cx |
||
561 | test dx, dx ; it seems that ZF is not set when CF is set :( |
||
562 | not dx |
||
563 | jnz .not_zero |
||
564 | dec dx |
||
1249 | hidnplayr | 565 | .not_zero: |
2366 | hidnplayr | 566 | xchg dl, dh |
1249 | hidnplayr | 567 | |
2366 | hidnplayr | 568 | DEBUGF 1,"Checksum: %x\n", dx |
1249 | hidnplayr | 569 | |
2366 | hidnplayr | 570 | ret |
1249 | hidnplayr | 571 | |
572 | |||
573 | |||
1159 | hidnplayr | 574 | ;---------------------------------------------------------------- |
575 | ; |
||
1171 | hidnplayr | 576 | ; System function to work with network devices (73) |
1159 | hidnplayr | 577 | ; |
578 | ;---------------------------------------------------------------- |
||
579 | align 4 |
||
2366 | hidnplayr | 580 | sys_network: ; FIXME: make default device easily accessible |
1159 | hidnplayr | 581 | |
2366 | hidnplayr | 582 | cmp ebx, -1 |
583 | jne @f |
||
1196 | hidnplayr | 584 | |
2366 | hidnplayr | 585 | mov eax, [NET_RUNNING] |
586 | jmp .return |
||
1196 | hidnplayr | 587 | |
588 | @@: |
||
2366 | hidnplayr | 589 | cmp bh, MAX_NET_DEVICES ; Check if device number exists |
590 | jae .doesnt_exist |
||
1159 | hidnplayr | 591 | |
2366 | hidnplayr | 592 | mov esi, ebx |
593 | and esi, 0x0000ff00 |
||
594 | shr esi, 6 |
||
1159 | hidnplayr | 595 | |
2366 | hidnplayr | 596 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
597 | je .doesnt_exist |
||
1159 | hidnplayr | 598 | |
2220 | hidnplayr | 599 | |
600 | |||
2366 | hidnplayr | 601 | test bl, bl ; 0 = Get device type (ethernet/token ring/...) |
602 | jnz @f |
||
1514 | hidnplayr | 603 | |
2366 | hidnplayr | 604 | xor eax, eax |
605 | jmp .return |
||
1159 | hidnplayr | 606 | |
607 | |||
608 | @@: |
||
2366 | hidnplayr | 609 | dec bl ; 1 = Get device name |
610 | jnz @f |
||
1159 | hidnplayr | 611 | |
2366 | hidnplayr | 612 | mov esi, [esi + NET_DRV_LIST] |
613 | mov esi, [esi + NET_DEVICE.name] |
||
614 | mov edi, ecx |
||
1159 | hidnplayr | 615 | |
2366 | hidnplayr | 616 | mov ecx, 64 ; max length |
617 | repnz movsb |
||
1159 | hidnplayr | 618 | |
2366 | hidnplayr | 619 | xor eax, eax |
620 | jmp .return |
||
1159 | hidnplayr | 621 | |
1192 | hidnplayr | 622 | @@: |
1159 | hidnplayr | 623 | |
2366 | hidnplayr | 624 | dec bl ; 2 = Reset the device |
625 | jnz @f |
||
1192 | hidnplayr | 626 | |
2366 | hidnplayr | 627 | mov esi, [esi + NET_DRV_LIST] |
628 | call [esi + NET_DEVICE.reset] |
||
629 | jmp .return |
||
1192 | hidnplayr | 630 | |
1159 | hidnplayr | 631 | @@: |
1192 | hidnplayr | 632 | |
2366 | hidnplayr | 633 | dec bl ; 3 = Stop driver for this device |
634 | jnz @f |
||
1192 | hidnplayr | 635 | |
2366 | hidnplayr | 636 | mov esi, [esi + NET_DRV_LIST] |
637 | call [esi + NET_DEVICE.unload] |
||
638 | jmp .return |
||
1192 | hidnplayr | 639 | |
640 | @@: |
||
2366 | hidnplayr | 641 | dec bl ; 4 = Get driver pointer |
642 | jnz @f |
||
1192 | hidnplayr | 643 | |
2366 | hidnplayr | 644 | ; ..; |
645 | xor eax, eax |
||
646 | jmp .return |
||
1249 | hidnplayr | 647 | |
648 | |||
649 | @@: |
||
2366 | hidnplayr | 650 | dec bl ; 5 = Get driver name |
651 | jnz @f |
||
1249 | hidnplayr | 652 | |
2366 | hidnplayr | 653 | ; ..; |
654 | xor eax, eax |
||
655 | jmp .return |
||
2220 | hidnplayr | 656 | |
657 | |||
658 | @@: |
||
2366 | hidnplayr | 659 | dec bl ; 6 = Set default device |
660 | jnz @f |
||
2220 | hidnplayr | 661 | |
2366 | hidnplayr | 662 | mov eax, esi |
663 | call NET_set_default |
||
664 | jmp .return |
||
2220 | hidnplayr | 665 | |
666 | |||
667 | @@: |
||
668 | |||
1159 | hidnplayr | 669 | .doesnt_exist: |
2366 | hidnplayr | 670 | DEBUGF 1,"sys_network: invalid device/function specified!\n" |
671 | mov eax, -1 |
||
1159 | hidnplayr | 672 | |
1192 | hidnplayr | 673 | .return: |
2366 | hidnplayr | 674 | mov [esp+28+4], eax |
675 | ret |
||
1159 | hidnplayr | 676 | |
677 | |||
678 | ;---------------------------------------------------------------- |
||
679 | ; |
||
1514 | hidnplayr | 680 | ; System function to work with protocols (75) |
1159 | hidnplayr | 681 | ; |
682 | ;---------------------------------------------------------------- |
||
683 | align 4 |
||
684 | sys_protocols: |
||
2366 | hidnplayr | 685 | cmp bh, MAX_NET_DEVICES ; Check if device number exists |
686 | jae .doesnt_exist |
||
1159 | hidnplayr | 687 | |
2366 | hidnplayr | 688 | mov esi, ebx |
689 | and esi, 0x0000ff00 |
||
690 | shr esi, 6 ; now we have the device num * 4 in esi |
||
691 | cmp [esi + NET_DRV_LIST], 0 ; check if driver is running |
||
692 | je .doesnt_exist |
||
1159 | hidnplayr | 693 | |
2366 | hidnplayr | 694 | push .return ; return address (we will be using jumps instead of calls) |
1159 | hidnplayr | 695 | |
2366 | hidnplayr | 696 | mov eax, ebx ; set ax to protocol number |
697 | shr eax, 16 ; |
||
1159 | hidnplayr | 698 | |
2366 | hidnplayr | 699 | cmp ax , IP_PROTO_IP |
700 | je IPv4_API |
||
1159 | hidnplayr | 701 | |
2366 | hidnplayr | 702 | cmp ax , IP_PROTO_ICMP |
703 | je ICMP_API |
||
1159 | hidnplayr | 704 | |
2366 | hidnplayr | 705 | cmp ax , IP_PROTO_UDP |
706 | je UDP_API |
||
1159 | hidnplayr | 707 | |
2366 | hidnplayr | 708 | cmp ax , IP_PROTO_TCP |
709 | je TCP_API |
||
1159 | hidnplayr | 710 | |
2366 | hidnplayr | 711 | cmp ax , ETHER_ARP |
712 | je ARP_API |
||
1159 | hidnplayr | 713 | |
2366 | hidnplayr | 714 | cmp ax , 1337 ;;;;; |
715 | je ETH_API |
||
1159 | hidnplayr | 716 | |
2366 | hidnplayr | 717 | add esp, 4 ; if we reached here, no function was called, so we need to balance stack |
1159 | hidnplayr | 718 | |
719 | .doesnt_exist: |
||
2366 | hidnplayr | 720 | DEBUGF 1,"sys_protocols: protocol %u doesnt exist on device %u!\n", ax, bh |
721 | mov eax, -1 |
||
1159 | hidnplayr | 722 | |
723 | .return: |
||
2366 | hidnplayr | 724 | mov [esp+28+4], eax |
725 | ret |
||
1473 | hidnplayr | 726 | |
727 | |||
728 | __DEBUG_LEVEL__ equ __DEBUG_LEVEL_OLD__ |