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Rev | Author | Line No. | Line |
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1171 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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2877 | hidnplayr | 3 | ;; Copyright (C) KolibriOS team 2004-2012. 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: 2877 $ |
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 | |||
2731 | hidnplayr | 34 | MAX_NET_DEVICES = 16 |
1159 | hidnplayr | 35 | |
2731 | hidnplayr | 36 | MIN_EPHEMERAL_PORT = 49152 |
37 | MAX_EPHEMERAL_PORT = 61000 |
||
1159 | hidnplayr | 38 | |
1514 | hidnplayr | 39 | ; Ethernet protocol numbers |
2731 | hidnplayr | 40 | ETHER_ARP = 0x0608 |
41 | ETHER_IPv4 = 0x0008 |
||
42 | ETHER_IPv6 = 0xDD86 |
||
43 | ETHER_PPP_DISCOVERY = 0x6388 |
||
44 | ETHER_PPP_SESSION = 0x6488 |
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1185 | hidnplayr | 45 | |
1514 | hidnplayr | 46 | ;Protocol family |
2731 | hidnplayr | 47 | AF_UNSPEC = 0 |
48 | AF_UNIX = 1 |
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49 | AF_INET4 = 2 |
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50 | AF_INET6 = 10 |
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1159 | hidnplayr | 51 | |
1514 | hidnplayr | 52 | ; Internet protocol numbers |
2731 | hidnplayr | 53 | IP_PROTO_IP = 0 |
54 | IP_PROTO_ICMP = 1 |
||
55 | IP_PROTO_TCP = 6 |
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56 | IP_PROTO_UDP = 17 |
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1159 | hidnplayr | 57 | |
1200 | hidnplayr | 58 | ; Socket types |
2731 | hidnplayr | 59 | SOCK_STREAM = 1 |
60 | SOCK_DGRAM = 2 |
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61 | SOCK_RAW = 3 |
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1200 | hidnplayr | 62 | |
1514 | hidnplayr | 63 | ; Socket options |
2731 | hidnplayr | 64 | SO_ACCEPTCON = 1 shl 0 |
65 | SO_BROADCAST = 1 shl 1 |
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66 | SO_DEBUG = 1 shl 2 |
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67 | SO_DONTROUTE = 1 shl 3 |
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68 | SO_KEEPALIVE = 1 shl 4 |
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69 | SO_OOBINLINE = 1 shl 5 |
||
70 | SO_REUSEADDR = 1 shl 6 |
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71 | SO_REUSEPORT = 1 shl 7 |
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72 | SO_USELOOPBACK = 1 shl 8 |
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2877 | hidnplayr | 73 | SO_BINDTODEVICE = 1 shl 9 |
1159 | hidnplayr | 74 | |
2877 | hidnplayr | 75 | ; Socket level |
76 | SOL_SOCKET = 0 |
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1885 | hidnplayr | 77 | |
2877 | hidnplayr | 78 | |
1773 | hidnplayr | 79 | ; Socket States |
2731 | hidnplayr | 80 | SS_NOFDREF = 0x001 ; no file table ref any more |
81 | SS_ISCONNECTED = 0x002 ; socket connected to a peer |
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82 | SS_ISCONNECTING = 0x004 ; in process of connecting to peer |
||
83 | SS_ISDISCONNECTING = 0x008 ; in process of disconnecting |
||
84 | SS_CANTSENDMORE = 0x010 ; can't send more data to peer |
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85 | SS_CANTRCVMORE = 0x020 ; can't receive more data from peer |
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86 | SS_RCVATMARK = 0x040 ; at mark on input |
||
87 | SS_ISABORTING = 0x080 ; aborting fd references - close() |
||
88 | SS_RESTARTSYS = 0x100 ; restart blocked system calls |
||
89 | SS_ISDISCONNECTED = 0x800 ; socket disconnected from peer |
||
1773 | hidnplayr | 90 | |
2731 | hidnplayr | 91 | SS_ASYNC = 0x100 ; async i/o notify |
92 | SS_ISCONFIRMING = 0x200 ; deciding to accept connection req |
||
93 | SS_MORETOCOME = 0x400 |
||
1773 | hidnplayr | 94 | |
95 | |||
2731 | hidnplayr | 96 | SOCKET_MAXDATA = 4096*32 ; must be 4096*(power of 2) where 'power of 2' is at least 8 |
1254 | hidnplayr | 97 | |
1514 | hidnplayr | 98 | ; Network driver types |
2731 | hidnplayr | 99 | NET_TYPE_ETH = 1 |
100 | NET_TYPE_SLIP = 2 |
||
1254 | hidnplayr | 101 | |
2731 | hidnplayr | 102 | MAX_backlog = 20 ; maximum backlog for stream sockets |
1254 | hidnplayr | 103 | |
1716 | hidnplayr | 104 | ; Error Codes |
2731 | hidnplayr | 105 | ENOBUFS = 55 |
106 | ECONNREFUSED = 61 |
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107 | ECONNRESET = 52 |
||
108 | ETIMEDOUT = 60 |
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109 | ECONNABORTED = 53 |
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1529 | hidnplayr | 110 | |
2731 | hidnplayr | 111 | ; Api protocol numbers |
112 | API_ETH = 0 |
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113 | API_IPv4 = 1 |
||
114 | API_ICMP = 2 |
||
115 | API_UDP = 3 |
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116 | API_TCP = 4 |
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117 | API_ARP = 5 |
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118 | API_PPPOE = 6 |
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1716 | hidnplayr | 119 | |
2366 | hidnplayr | 120 | struct NET_DEVICE |
1254 | hidnplayr | 121 | |
2366 | hidnplayr | 122 | type dd ? ; Type field |
123 | mtu dd ? ; Maximal Transmission Unit |
||
124 | name dd ? ; Ptr to 0 terminated string |
||
1519 | hidnplayr | 125 | |
2366 | hidnplayr | 126 | unload dd ? ; Ptrs to driver functions |
127 | reset dd ? ; |
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128 | transmit dd ? ; |
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1519 | hidnplayr | 129 | |
2366 | hidnplayr | 130 | bytes_tx dq ? ; Statistics, updated by the driver |
131 | bytes_rx dq ? ; |
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132 | packets_tx dd ? ; |
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133 | packets_rx dd ? ; |
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1519 | hidnplayr | 134 | |
2305 | hidnplayr | 135 | ; hwacc dd ? ; bitmask stating available hardware accelerations (offload engines) |
1519 | hidnplayr | 136 | |
2305 | hidnplayr | 137 | ends |
1529 | hidnplayr | 138 | |
1254 | hidnplayr | 139 | |
1514 | hidnplayr | 140 | ; Exactly as it says.. |
1318 | hidnplayr | 141 | macro pseudo_random reg { |
2366 | hidnplayr | 142 | add reg, [esp] |
143 | rol reg, 5 |
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144 | xor reg, [timer_ticks] |
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145 | add reg, [CPU_FREQ] |
||
146 | imul reg, 214013 |
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147 | xor reg, 0xdeadbeef |
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148 | rol reg, 9 |
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1514 | hidnplayr | 149 | } |
1318 | hidnplayr | 150 | |
1543 | hidnplayr | 151 | macro ntohd reg { |
1318 | hidnplayr | 152 | |
2366 | hidnplayr | 153 | rol word reg, 8 |
154 | rol dword reg, 16 |
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155 | rol word reg , 8 |
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1514 | hidnplayr | 156 | |
1318 | hidnplayr | 157 | } |
158 | |||
1543 | hidnplayr | 159 | macro ntohw reg { |
1514 | hidnplayr | 160 | |
2366 | hidnplayr | 161 | rol word reg, 8 |
1514 | hidnplayr | 162 | |
163 | } |
||
164 | |||
2382 | hidnplayr | 165 | |
1159 | hidnplayr | 166 | include "queue.inc" |
1514 | hidnplayr | 167 | |
168 | include "ethernet.inc" |
||
1719 | hidnplayr | 169 | |
2614 | hidnplayr | 170 | ;include "PPPoE.inc" |
1514 | hidnplayr | 171 | |
1187 | hidnplayr | 172 | include "ARP.inc" |
173 | include "IPv4.inc" |
||
2731 | hidnplayr | 174 | ;include "IPv6.inc" |
1514 | hidnplayr | 175 | |
176 | include "icmp.inc" |
||
177 | include "udp.inc" |
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1249 | hidnplayr | 178 | include "tcp.inc" |
1159 | hidnplayr | 179 | |
1514 | hidnplayr | 180 | include "socket.inc" |
181 | |||
182 | |||
183 | |||
184 | align 4 |
||
185 | uglobal |
||
186 | |||
2366 | hidnplayr | 187 | NET_RUNNING dd ? |
188 | NET_DEFAULT dd ? |
||
189 | NET_DRV_LIST rd MAX_NET_DEVICES |
||
1514 | hidnplayr | 190 | |
191 | endg |
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192 | |||
193 | |||
1257 | hidnplayr | 194 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 195 | ; |
196 | ; stack_init |
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197 | ; |
||
198 | ; This function calls all network init procedures |
||
199 | ; |
||
200 | ; IN: / |
||
201 | ; OUT: / |
||
202 | ; |
||
1257 | hidnplayr | 203 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 204 | align 4 |
205 | stack_init: |
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206 | |||
1514 | hidnplayr | 207 | ; Init the network drivers list |
2366 | hidnplayr | 208 | xor eax, eax |
209 | mov edi, NET_RUNNING |
||
210 | mov ecx, (MAX_NET_DEVICES + 2) |
||
211 | rep stosd |
||
1514 | hidnplayr | 212 | |
1529 | hidnplayr | 213 | ; PPPOE_init |
1514 | hidnplayr | 214 | |
2366 | hidnplayr | 215 | IPv4_init |
2731 | hidnplayr | 216 | ; IPv6_init |
2366 | hidnplayr | 217 | ICMP_init |
1514 | hidnplayr | 218 | |
2366 | hidnplayr | 219 | ARP_init |
220 | UDP_init |
||
221 | TCP_init |
||
1514 | hidnplayr | 222 | |
2366 | hidnplayr | 223 | SOCKET_init |
1514 | hidnplayr | 224 | |
2366 | hidnplayr | 225 | mov [net_tmr_count], 0 |
1159 | hidnplayr | 226 | |
2366 | hidnplayr | 227 | ret |
1159 | hidnplayr | 228 | |
229 | |||
1257 | hidnplayr | 230 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 231 | ; |
232 | ; stack_handler |
||
233 | ; |
||
1514 | hidnplayr | 234 | ; This function is called in kernel loop |
1159 | hidnplayr | 235 | ; |
236 | ; IN: / |
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237 | ; OUT: / |
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238 | ; |
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1257 | hidnplayr | 239 | ;----------------------------------------------------------------- |
1159 | hidnplayr | 240 | align 4 |
241 | stack_handler: |
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242 | |||
2366 | hidnplayr | 243 | cmp [NET_RUNNING], 0 |
244 | je .exit |
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1159 | hidnplayr | 245 | |
2366 | hidnplayr | 246 | ; Test for 10ms tick |
247 | mov eax, [timer_ticks] |
||
248 | cmp eax, [net_10ms] |
||
249 | je .exit |
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250 | mov [net_10ms], eax |
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1159 | hidnplayr | 251 | |
2366 | hidnplayr | 252 | test [net_10ms], 0x0f ; 160ms |
253 | jnz .exit |
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1249 | hidnplayr | 254 | |
2366 | hidnplayr | 255 | TCP_timer_160ms |
1159 | hidnplayr | 256 | |
2366 | hidnplayr | 257 | test [net_10ms], 0x3f ; 640ms |
258 | jnz .exit |
||
1519 | hidnplayr | 259 | |
2366 | hidnplayr | 260 | TCP_timer_640ms |
261 | ARP_decrease_entry_ttls |
||
262 | IPv4_decrease_fragment_ttls |
||
1159 | hidnplayr | 263 | |
264 | .exit: |
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2366 | hidnplayr | 265 | ret |
1159 | hidnplayr | 266 | |
267 | |||
1514 | hidnplayr | 268 | |
1249 | hidnplayr | 269 | ;----------------------------------------------------------------- |
270 | ; |
||
2220 | hidnplayr | 271 | ; NET_add_device: |
1514 | hidnplayr | 272 | ; |
273 | ; This function is called by the network drivers, |
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274 | ; to register each running NIC to the kernel |
||
275 | ; |
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276 | ; IN: Pointer to device structure in ebx |
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277 | ; OUT: Device num in eax, -1 on error |
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278 | ; |
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279 | ;----------------------------------------------------------------- |
||
280 | align 4 |
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281 | NET_add_device: |
||
282 | |||
2366 | hidnplayr | 283 | DEBUGF 1,"NET_Add_Device: %x\n", ebx ;;; TODO: use mutex to lock net device list |
1514 | hidnplayr | 284 | |
2366 | hidnplayr | 285 | mov eax, [NET_RUNNING] |
286 | cmp eax, MAX_NET_DEVICES |
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287 | jae .error |
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1514 | hidnplayr | 288 | |
289 | ;---------------------------------- |
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290 | ; Check if device is already listed |
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2366 | hidnplayr | 291 | mov eax, ebx |
292 | 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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293 | mov edi, NET_DRV_LIST |
||
1514 | hidnplayr | 294 | |
2366 | hidnplayr | 295 | repne scasd ; See if device is already in the list |
296 | jz .error |
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1514 | hidnplayr | 297 | |
298 | ;---------------------------- |
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299 | ; Find empty slot in the list |
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2366 | hidnplayr | 300 | xor eax, eax |
301 | mov ecx, MAX_NET_DEVICES |
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302 | mov edi, NET_DRV_LIST |
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1514 | hidnplayr | 303 | |
2366 | hidnplayr | 304 | repne scasd |
305 | jnz .error |
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1514 | hidnplayr | 306 | |
2366 | hidnplayr | 307 | sub edi, 4 |
1514 | hidnplayr | 308 | |
2220 | hidnplayr | 309 | ;----------------------------- |
310 | ; Add device to the found slot |
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2366 | hidnplayr | 311 | mov [edi], ebx ; add device to list |
1514 | hidnplayr | 312 | |
2366 | hidnplayr | 313 | mov eax, edi ; Calculate device number in eax |
314 | sub eax, NET_DRV_LIST |
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315 | shr eax, 2 |
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1514 | hidnplayr | 316 | |
2366 | hidnplayr | 317 | inc [NET_RUNNING] ; Indicate that one more network device is up and running |
1514 | hidnplayr | 318 | |
2366 | hidnplayr | 319 | cmp eax, 1 ; If it's the first network device, try to set it as default |
320 | jne @f |
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321 | push eax |
||
322 | call NET_set_default |
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323 | pop eax |
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2220 | hidnplayr | 324 | @@: |
1514 | hidnplayr | 325 | |
2366 | hidnplayr | 326 | DEBUGF 1,"Device number: %u\n", eax |
327 | ret |
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1514 | hidnplayr | 328 | |
2220 | hidnplayr | 329 | .error: |
2366 | hidnplayr | 330 | or eax, -1 |
331 | DEBUGF 2,"Adding network device failed\n" |
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332 | ret |
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1514 | hidnplayr | 333 | |
334 | |||
335 | |||
2220 | hidnplayr | 336 | ;----------------------------------------------------------------- |
337 | ; |
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338 | ; NET_set_default |
||
339 | ; |
||
340 | ; API to set the default interface |
||
341 | ; |
||
342 | ; IN: Device num in eax |
||
343 | ; OUT: Device num in eax, -1 on error |
||
344 | ; |
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345 | ;----------------------------------------------------------------- |
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346 | align 4 |
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347 | NET_set_default: |
||
1514 | hidnplayr | 348 | |
2366 | hidnplayr | 349 | DEBUGF 1,"NET_set_default %x\n", eax |
1514 | hidnplayr | 350 | |
2366 | hidnplayr | 351 | cmp eax, MAX_NET_DEVICES |
352 | jae .error |
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1514 | hidnplayr | 353 | |
2366 | hidnplayr | 354 | cmp [NET_DRV_LIST+eax*4], 0 |
355 | je .error |
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2220 | hidnplayr | 356 | |
2366 | hidnplayr | 357 | mov [NET_DEFAULT], eax |
2220 | hidnplayr | 358 | |
2366 | hidnplayr | 359 | DEBUGF 1,"Device number %u is now default!\n", eax |
360 | ret |
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1514 | hidnplayr | 361 | |
362 | .error: |
||
2366 | hidnplayr | 363 | or eax, -1 |
364 | DEBUGF 2,"Setting default network device failed\n" |
||
365 | ret |
||
1514 | hidnplayr | 366 | |
367 | |||
368 | ;----------------------------------------------------------------- |
||
369 | ; |
||
370 | ; NET_Remove_Device: |
||
371 | ; |
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372 | ; This function is called by etwork drivers, |
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373 | ; to unregister network devices from the kernel |
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2220 | hidnplayr | 374 | ; d |
1514 | hidnplayr | 375 | ; IN: Pointer to device structure in ebx |
376 | ; OUT: eax: -1 on error |
||
377 | ; |
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378 | ;----------------------------------------------------------------- |
||
379 | align 4 |
||
380 | NET_remove_device: |
||
381 | |||
2366 | hidnplayr | 382 | cmp [NET_RUNNING], 0 |
383 | je .error |
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1514 | hidnplayr | 384 | |
2366 | hidnplayr | 385 | cmp [NET_DRV_LIST], ebx |
386 | jne @f |
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387 | mov [NET_DRV_LIST], 0 |
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388 | cmp [NET_RUNNING], 1 |
||
389 | je @f |
||
390 | ; there are still active devices, find one and make it default |
||
391 | xor eax, eax |
||
392 | mov ecx, MAX_NET_DEVICES |
||
393 | mov edi, NET_DRV_LIST |
||
394 | repe scasd |
||
395 | je @f |
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396 | shr edi, 2 |
||
397 | dec edi |
||
398 | mov [NET_DEFAULT], edi |
||
2220 | hidnplayr | 399 | @@: |
400 | |||
1514 | hidnplayr | 401 | ;---------------------------- |
402 | ; Find the driver in the list |
||
403 | |||
2366 | hidnplayr | 404 | mov eax, ebx |
405 | mov ecx, MAX_NET_DEVICES |
||
406 | mov edi, NET_DRV_LIST+4 |
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1514 | hidnplayr | 407 | |
2366 | hidnplayr | 408 | repne scasd |
409 | jnz .error |
||
1514 | hidnplayr | 410 | |
411 | ;------------------------ |
||
412 | ; Remove it from the list |
||
413 | |||
2366 | hidnplayr | 414 | xor eax, eax |
415 | mov dword [edi-4], eax |
||
1514 | hidnplayr | 416 | |
2366 | hidnplayr | 417 | dec [NET_RUNNING] |
418 | ret |
||
1514 | hidnplayr | 419 | |
420 | .error: |
||
2366 | hidnplayr | 421 | or eax, -1 |
422 | ret |
||
1514 | hidnplayr | 423 | |
424 | |||
425 | |||
426 | ;----------------------------------------------------------------- |
||
427 | ; |
||
428 | ; NET_ptr_to_num |
||
429 | ; |
||
430 | ; IN: ebx = ptr to device struct |
||
431 | ; OUT: edi = -1 on error, device number otherwise |
||
432 | ; |
||
433 | ;----------------------------------------------------------------- |
||
434 | align 4 |
||
435 | NET_ptr_to_num: |
||
2366 | hidnplayr | 436 | push ecx |
1514 | hidnplayr | 437 | |
2366 | hidnplayr | 438 | mov ecx, MAX_NET_DEVICES |
439 | mov edi, NET_DRV_LIST |
||
1514 | hidnplayr | 440 | |
441 | .loop: |
||
2366 | hidnplayr | 442 | cmp ebx, [edi] |
443 | jz .found |
||
444 | add edi, 4 |
||
445 | dec ecx |
||
446 | jnz .loop |
||
1514 | hidnplayr | 447 | |
2366 | hidnplayr | 448 | ; repnz scasd could work too if eax is used instead of ebx! |
1514 | hidnplayr | 449 | |
2366 | hidnplayr | 450 | or edi, -1 |
1514 | hidnplayr | 451 | |
2366 | hidnplayr | 452 | pop ecx |
453 | ret |
||
1514 | hidnplayr | 454 | |
455 | .found: |
||
2366 | hidnplayr | 456 | sub edi, NET_DRV_LIST |
457 | shr edi, 2 |
||
1514 | hidnplayr | 458 | |
2366 | hidnplayr | 459 | pop ecx |
460 | ret |
||
1514 | hidnplayr | 461 | |
462 | ;----------------------------------------------------------------- |
||
463 | ; |
||
1249 | hidnplayr | 464 | ; checksum_1 |
465 | ; |
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1482 | hidnplayr | 466 | ; This is the first of two functions needed to calculate a checksum. |
1249 | hidnplayr | 467 | ; |
1473 | hidnplayr | 468 | ; IN: edx = start offset for semi-checksum |
1249 | hidnplayr | 469 | ; esi = pointer to data |
470 | ; ecx = data size |
||
471 | ; OUT: edx = semi-checksum |
||
472 | ; |
||
1473 | hidnplayr | 473 | ; |
474 | ; Code was optimized by diamond |
||
475 | ; |
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1249 | hidnplayr | 476 | ;----------------------------------------------------------------- |
477 | align 4 |
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478 | checksum_1: |
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1159 | hidnplayr | 479 | |
2366 | hidnplayr | 480 | shr ecx, 1 |
481 | pushf |
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482 | jz .no_2 |
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1159 | hidnplayr | 483 | |
2366 | hidnplayr | 484 | shr ecx, 1 |
485 | pushf |
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486 | jz .no_4 |
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1473 | hidnplayr | 487 | |
2366 | hidnplayr | 488 | shr ecx, 1 |
489 | pushf |
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490 | jz .no_8 |
||
1473 | hidnplayr | 491 | |
492 | .loop: |
||
2366 | hidnplayr | 493 | add dl, [esi+1] |
494 | adc dh, [esi+0] |
||
1473 | hidnplayr | 495 | |
2366 | hidnplayr | 496 | adc dl, [esi+3] |
497 | adc dh, [esi+2] |
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1473 | hidnplayr | 498 | |
2366 | hidnplayr | 499 | adc dl, [esi+5] |
500 | adc dh, [esi+4] |
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1473 | hidnplayr | 501 | |
2366 | hidnplayr | 502 | adc dl, [esi+7] |
503 | adc dh, [esi+6] |
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1473 | hidnplayr | 504 | |
2366 | hidnplayr | 505 | adc edx, 0 |
506 | add esi, 8 |
||
1473 | hidnplayr | 507 | |
2366 | hidnplayr | 508 | dec ecx |
509 | jnz .loop |
||
1473 | hidnplayr | 510 | |
2366 | hidnplayr | 511 | adc edx, 0 |
1473 | hidnplayr | 512 | |
513 | .no_8: |
||
2366 | hidnplayr | 514 | popf |
515 | jnc .no_4 |
||
1473 | hidnplayr | 516 | |
2366 | hidnplayr | 517 | add dl, [esi+1] |
518 | adc dh, [esi+0] |
||
1473 | hidnplayr | 519 | |
2366 | hidnplayr | 520 | adc dl, [esi+3] |
521 | adc dh, [esi+2] |
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1473 | hidnplayr | 522 | |
2366 | hidnplayr | 523 | adc edx, 0 |
524 | add esi, 4 |
||
1473 | hidnplayr | 525 | |
526 | .no_4: |
||
2366 | hidnplayr | 527 | popf |
528 | jnc .no_2 |
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1473 | hidnplayr | 529 | |
2366 | hidnplayr | 530 | add dl, [esi+1] |
531 | adc dh, [esi+0] |
||
1473 | hidnplayr | 532 | |
2366 | hidnplayr | 533 | adc edx, 0 |
534 | inc esi |
||
535 | inc esi |
||
1473 | hidnplayr | 536 | |
537 | .no_2: |
||
2366 | hidnplayr | 538 | popf |
539 | jnc .end |
||
1159 | hidnplayr | 540 | |
2366 | hidnplayr | 541 | add dh, [esi+0] |
542 | adc edx, 0 |
||
1473 | hidnplayr | 543 | .end: |
2366 | hidnplayr | 544 | ret |
1159 | hidnplayr | 545 | |
1249 | hidnplayr | 546 | ;----------------------------------------------------------------- |
547 | ; |
||
548 | ; checksum_2 |
||
549 | ; |
||
550 | ; This function calculates the final ip/tcp/udp checksum for you |
||
551 | ; |
||
552 | ; IN: edx = semi-checksum |
||
553 | ; OUT: dx = checksum (in INET byte order) |
||
554 | ; |
||
555 | ;----------------------------------------------------------------- |
||
556 | align 4 |
||
557 | checksum_2: |
||
558 | |||
2366 | hidnplayr | 559 | mov ecx, edx |
560 | shr ecx, 16 |
||
561 | and edx, 0xffff |
||
562 | add edx, ecx |
||
1249 | hidnplayr | 563 | |
2366 | hidnplayr | 564 | mov ecx, edx |
565 | shr ecx, 16 |
||
566 | add dx, cx |
||
567 | test dx, dx ; it seems that ZF is not set when CF is set :( |
||
568 | not dx |
||
569 | jnz .not_zero |
||
570 | dec dx |
||
1249 | hidnplayr | 571 | .not_zero: |
2366 | hidnplayr | 572 | xchg dl, dh |
1249 | hidnplayr | 573 | |
2366 | hidnplayr | 574 | DEBUGF 1,"Checksum: %x\n", dx |
1249 | hidnplayr | 575 | |
2366 | hidnplayr | 576 | ret |
1249 | hidnplayr | 577 | |
578 | |||
579 | |||
1159 | hidnplayr | 580 | ;---------------------------------------------------------------- |
581 | ; |
||
1171 | hidnplayr | 582 | ; System function to work with network devices (73) |
1159 | hidnplayr | 583 | ; |
584 | ;---------------------------------------------------------------- |
||
585 | align 4 |
||
2366 | hidnplayr | 586 | sys_network: ; FIXME: make default device easily accessible |
1159 | hidnplayr | 587 | |
2366 | hidnplayr | 588 | cmp ebx, -1 |
589 | jne @f |
||
1196 | hidnplayr | 590 | |
2366 | hidnplayr | 591 | mov eax, [NET_RUNNING] |
592 | jmp .return |
||
1196 | hidnplayr | 593 | |
594 | @@: |
||
2366 | hidnplayr | 595 | cmp bh, MAX_NET_DEVICES ; Check if device number exists |
596 | jae .doesnt_exist |
||
1159 | hidnplayr | 597 | |
2366 | hidnplayr | 598 | mov esi, ebx |
599 | and esi, 0x0000ff00 |
||
600 | shr esi, 6 |
||
1159 | hidnplayr | 601 | |
2366 | hidnplayr | 602 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
603 | je .doesnt_exist |
||
1159 | hidnplayr | 604 | |
2621 | hidnplayr | 605 | mov eax, [esi + NET_DRV_LIST] |
2220 | hidnplayr | 606 | |
2621 | hidnplayr | 607 | and ebx, 0x000000ff |
608 | cmp ebx, .number |
||
609 | ja .doesnt_exist |
||
610 | jmp dword [.table + 4*ebx] |
||
2220 | hidnplayr | 611 | |
2621 | hidnplayr | 612 | .table: |
613 | dd .get_type ; 0 |
||
614 | dd .get_dev_name ; 1 |
||
615 | dd .reset ; 2 |
||
616 | dd .stop ; 3 |
||
617 | dd .get_ptr ; 4 |
||
618 | dd .get_drv_name ; 5 |
||
619 | dd .set_default ; 6 |
||
620 | .number = ($ - .table) / 4 - 1 |
||
1514 | hidnplayr | 621 | |
2621 | hidnplayr | 622 | .get_type: ; 0 = Get device type (ethernet/token ring/...) |
623 | |||
624 | mov eax, [eax + NET_DEVICE.type] |
||
2366 | hidnplayr | 625 | jmp .return |
1159 | hidnplayr | 626 | |
627 | |||
2621 | hidnplayr | 628 | .get_dev_name: ; 1 = Get device name |
1159 | hidnplayr | 629 | |
2621 | hidnplayr | 630 | mov esi, [eax + NET_DEVICE.name] |
2366 | hidnplayr | 631 | mov edi, ecx |
1159 | hidnplayr | 632 | |
2621 | hidnplayr | 633 | mov ecx, 64/4 ; max length |
634 | rep movsd |
||
1159 | hidnplayr | 635 | |
2366 | hidnplayr | 636 | xor eax, eax |
637 | jmp .return |
||
1159 | hidnplayr | 638 | |
2621 | hidnplayr | 639 | .reset: ; 2 = Reset the device |
1159 | hidnplayr | 640 | |
2621 | hidnplayr | 641 | call [eax + NET_DEVICE.reset] |
2366 | hidnplayr | 642 | jmp .return |
1192 | hidnplayr | 643 | |
2621 | hidnplayr | 644 | .stop: ; 3 = Stop driver for this device |
1192 | hidnplayr | 645 | |
2621 | hidnplayr | 646 | call [eax + NET_DEVICE.unload] |
2366 | hidnplayr | 647 | jmp .return |
1192 | hidnplayr | 648 | |
649 | |||
2621 | hidnplayr | 650 | .get_ptr: ; 4 = Get driver pointer |
651 | |||
2366 | hidnplayr | 652 | jmp .return |
1249 | hidnplayr | 653 | |
654 | |||
2621 | hidnplayr | 655 | .get_drv_name: ; 5 = Get driver name |
1249 | hidnplayr | 656 | |
2366 | hidnplayr | 657 | xor eax, eax |
658 | jmp .return |
||
2220 | hidnplayr | 659 | |
660 | |||
2621 | hidnplayr | 661 | .set_default: ; 6 = Set default device |
2220 | hidnplayr | 662 | |
2366 | hidnplayr | 663 | call NET_set_default |
664 | jmp .return |
||
2220 | hidnplayr | 665 | |
1159 | hidnplayr | 666 | .doesnt_exist: |
2366 | hidnplayr | 667 | DEBUGF 1,"sys_network: invalid device/function specified!\n" |
668 | mov eax, -1 |
||
1159 | hidnplayr | 669 | |
1192 | hidnplayr | 670 | .return: |
2621 | hidnplayr | 671 | mov [esp+32], eax |
2366 | hidnplayr | 672 | ret |
1159 | hidnplayr | 673 | |
674 | |||
675 | ;---------------------------------------------------------------- |
||
676 | ; |
||
2731 | hidnplayr | 677 | ; System function to work with protocols (76) |
1159 | hidnplayr | 678 | ; |
679 | ;---------------------------------------------------------------- |
||
680 | align 4 |
||
681 | sys_protocols: |
||
2366 | hidnplayr | 682 | cmp bh, MAX_NET_DEVICES ; Check if device number exists |
683 | jae .doesnt_exist |
||
1159 | hidnplayr | 684 | |
2366 | hidnplayr | 685 | mov esi, ebx |
686 | and esi, 0x0000ff00 |
||
687 | shr esi, 6 ; now we have the device num * 4 in esi |
||
688 | cmp [esi + NET_DRV_LIST], 0 ; check if driver is running |
||
689 | je .doesnt_exist |
||
1159 | hidnplayr | 690 | |
2366 | hidnplayr | 691 | push .return ; return address (we will be using jumps instead of calls) |
1159 | hidnplayr | 692 | |
2366 | hidnplayr | 693 | mov eax, ebx ; set ax to protocol number |
694 | shr eax, 16 ; |
||
1159 | hidnplayr | 695 | |
2731 | hidnplayr | 696 | cmp ax, API_ETH |
697 | je ETH_api |
||
698 | |||
699 | cmp ax, API_IPv4 |
||
2614 | hidnplayr | 700 | je IPv4_api |
1159 | hidnplayr | 701 | |
2731 | hidnplayr | 702 | cmp ax, API_ICMP |
2614 | hidnplayr | 703 | je ICMP_api |
1159 | hidnplayr | 704 | |
2731 | hidnplayr | 705 | cmp ax, API_UDP |
2614 | hidnplayr | 706 | je UDP_api |
1159 | hidnplayr | 707 | |
2731 | hidnplayr | 708 | cmp ax, API_TCP |
2614 | hidnplayr | 709 | je TCP_api |
1159 | hidnplayr | 710 | |
2731 | hidnplayr | 711 | cmp ax, API_ARP |
2614 | hidnplayr | 712 | je ARP_api |
1159 | hidnplayr | 713 | |
2731 | hidnplayr | 714 | ; cmp ax, API_PPPOE |
2614 | hidnplayr | 715 | ; je PPPoE_api |
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: |
||
2614 | hidnplayr | 724 | mov [esp+28+4], eax ; return eax value to the program |
2366 | hidnplayr | 725 | ret |
1473 | hidnplayr | 726 | |
727 | |||
728 | __DEBUG_LEVEL__ equ __DEBUG_LEVEL_OLD__ |