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Rev | Author | Line No. | Line |
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3555 | Serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;; STACK.INC ;; |
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7 | ;; ;; |
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8 | ;; 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 | ;; Some parts of code are based on the work of: ;; |
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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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16 | ;; ;; |
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17 | ;; TCP part is based on 4.4BSD ;; |
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18 | ;; ;; |
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19 | ;; GNU GENERAL PUBLIC LICENSE ;; |
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20 | ;; Version 2, June 1991 ;; |
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21 | ;; ;; |
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22 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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1 | ha | 23 | |
593 | mikedld | 24 | $Revision: 4265 $ |
1 | ha | 25 | |
261 | hidnplayr | 26 | uglobal |
3555 | Serge | 27 | net_10ms dd ? |
28 | net_tmr_count dw ? |
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261 | hidnplayr | 29 | endg |
1 | ha | 30 | |
3589 | Serge | 31 | DEBUG_NETWORK_ERROR = 1 |
32 | DEBUG_NETWORK_VERBOSE = 0 |
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33 | |||
3626 | Serge | 34 | NET_DEVICES_MAX = 16 |
3555 | Serge | 35 | ARP_BLOCK = 1 ; true or false |
1 | ha | 36 | |
3626 | Serge | 37 | EPHEMERAL_PORT_MIN = 49152 |
38 | EPHEMERAL_PORT_MAX = 61000 |
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3555 | Serge | 39 | MIN_EPHEMERAL_PORT_N = 0x00C0 ; same in Network byte order (FIXME) |
40 | MAX_EPHEMERAL_PORT_N = 0x48EE ; same in Network byte order (FIXME) |
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1 | ha | 41 | |
3555 | Serge | 42 | ; Ethernet protocol numbers |
3626 | Serge | 43 | ETHER_PROTO_ARP = 0x0608 |
44 | ETHER_PROTO_IPv4 = 0x0008 |
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45 | ETHER_PROTO_IPv6 = 0xDD86 |
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46 | ETHER_PROTO_PPP_DISCOVERY = 0x6388 |
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47 | ETHER_PROTO_PPP_SESSION = 0x6488 |
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1 | ha | 48 | |
3626 | Serge | 49 | ; Internet protocol numbers |
50 | IP_PROTO_IP = 0 |
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51 | IP_PROTO_ICMP = 1 |
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52 | IP_PROTO_TCP = 6 |
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53 | IP_PROTO_UDP = 17 |
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54 | |||
3555 | Serge | 55 | ; PPP protocol numbers |
3626 | Serge | 56 | PPP_PROTO_IPv4 = 0x2100 |
57 | PPP_PROTO_IPV6 = 0x5780 |
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58 | PPP_PROTO_ETHERNET = 666 ; FIXME |
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1 | ha | 59 | |
3555 | Serge | 60 | ;Protocol family |
61 | AF_UNSPEC = 0 |
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62 | AF_LOCAL = 1 |
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63 | AF_INET4 = 2 |
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64 | AF_INET6 = 10 |
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3626 | Serge | 65 | AF_PPP = 777 ; FIXME |
907 | mikedld | 66 | |
3555 | Serge | 67 | ; Socket types |
68 | SOCK_STREAM = 1 |
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69 | SOCK_DGRAM = 2 |
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70 | SOCK_RAW = 3 |
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1 | ha | 71 | |
3555 | Serge | 72 | ; Socket options |
73 | SO_ACCEPTCON = 1 shl 0 |
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74 | SO_BROADCAST = 1 shl 1 |
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75 | SO_DEBUG = 1 shl 2 |
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76 | SO_DONTROUTE = 1 shl 3 |
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77 | SO_KEEPALIVE = 1 shl 4 |
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78 | SO_OOBINLINE = 1 shl 5 |
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79 | SO_REUSEADDR = 1 shl 6 |
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80 | SO_REUSEPORT = 1 shl 7 |
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81 | SO_USELOOPBACK = 1 shl 8 |
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82 | SO_BINDTODEVICE = 1 shl 9 |
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1 | ha | 83 | |
3555 | Serge | 84 | SO_NONBLOCK = 1 shl 31 |
1 | ha | 85 | |
3555 | Serge | 86 | ; Socket flags for user calls |
87 | MSG_PEEK = 0x02 |
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88 | MSG_DONTWAIT = 0x40 |
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261 | hidnplayr | 89 | |
3555 | Serge | 90 | ; Socket level |
91 | SOL_SOCKET = 0 |
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261 | hidnplayr | 92 | |
93 | |||
3555 | Serge | 94 | ; Socket States |
3626 | Serge | 95 | SS_NOFDREF = 0x0001 ; no file table ref any more |
96 | SS_ISCONNECTED = 0x0002 ; socket connected to a peer |
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97 | SS_ISCONNECTING = 0x0004 ; in process of connecting to peer |
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98 | SS_ISDISCONNECTING = 0x0008 ; in process of disconnecting |
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99 | SS_CANTSENDMORE = 0x0010 ; can't send more data to peer |
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100 | SS_CANTRCVMORE = 0x0020 ; can't receive more data from peer |
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101 | SS_RCVATMARK = 0x0040 ; at mark on input |
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102 | SS_ISABORTING = 0x0080 ; aborting fd references - close() |
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103 | SS_RESTARTSYS = 0x0100 ; restart blocked system calls |
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104 | SS_ISDISCONNECTED = 0x0800 ; socket disconnected from peer |
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261 | hidnplayr | 105 | |
3725 | Serge | 106 | SS_ASYNC = 0x1000 ; async i/o notify |
107 | SS_ISCONFIRMING = 0x2000 ; deciding to accept connection req |
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108 | SS_MORETOCOME = 0x4000 |
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261 | hidnplayr | 109 | |
3555 | Serge | 110 | SS_BLOCKED = 0x8000 |
1 | ha | 111 | |
112 | |||
3626 | Serge | 113 | SOCKET_MAXDATA = 4096*32 ; must be 4096*(power of 2) where 'power of 2' is at least 8 |
114 | MAX_backlog = 20 ; maximum backlog for stream sockets |
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1 | ha | 115 | |
3555 | Serge | 116 | ; Error Codes |
3725 | Serge | 117 | ENOBUFS = 1 |
4265 | Serge | 118 | EINPROGRESS = 2 |
3725 | Serge | 119 | EOPNOTSUPP = 4 |
120 | EWOULDBLOCK = 6 |
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121 | ENOTCONN = 9 |
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122 | EALREADY = 10 |
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123 | EINVAL = 11 |
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124 | EMSGSIZE = 12 |
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125 | ENOMEM = 18 |
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126 | EADDRINUSE = 20 |
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3555 | Serge | 127 | ECONNREFUSED = 61 |
128 | ECONNRESET = 52 |
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4265 | Serge | 129 | EISCONN = 56 |
3555 | Serge | 130 | ETIMEDOUT = 60 |
131 | ECONNABORTED = 53 |
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1 | ha | 132 | |
3555 | Serge | 133 | ; Api protocol numbers |
134 | API_ETH = 0 |
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135 | API_IPv4 = 1 |
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136 | API_ICMP = 2 |
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137 | API_UDP = 3 |
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138 | API_TCP = 4 |
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139 | API_ARP = 5 |
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140 | API_PPPOE = 6 |
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141 | API_IPv6 = 7 |
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1 | ha | 142 | |
3626 | Serge | 143 | ; Network device types |
144 | NET_DEVICE_LOOPBACK = 0 |
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145 | NET_DEVICE_ETH = 1 |
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146 | NET_DEVICE_SLIP = 2 |
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147 | |||
148 | ; Network link types (link protocols) |
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149 | NET_LINK_LOOPBACK = 0 ;;; Really a link type? |
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150 | NET_LINK_MAC = 1 ; Media access control (ethernet, isdn, ...) |
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151 | NET_LINK_PPP = 2 ; Point to Point Protocol (PPPoE, ...) |
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152 | NET_LINK_IEEE802.11 = 3 ; IEEE 802.11 (WiFi) |
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153 | |||
154 | ; Hardware acceleration bits |
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3555 | Serge | 155 | HWACC_TCP_IPv4 = 1 shl 0 |
1 | ha | 156 | |
3555 | Serge | 157 | struct NET_DEVICE |
907 | mikedld | 158 | |
3626 | Serge | 159 | device_type dd ? ; Type field |
3555 | Serge | 160 | mtu dd ? ; Maximal Transmission Unit |
161 | name dd ? ; Ptr to 0 terminated string |
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162 | |||
163 | unload dd ? ; Ptrs to driver functions |
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164 | reset dd ? ; |
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165 | transmit dd ? ; |
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166 | |||
167 | bytes_tx dq ? ; Statistics, updated by the driver |
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168 | bytes_rx dq ? ; |
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169 | packets_tx dd ? ; |
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170 | packets_rx dd ? ; |
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171 | |||
3626 | Serge | 172 | link_state dd ? ; link state (0 = no link) |
3555 | Serge | 173 | hwacc dd ? ; bitmask stating enabled HW accelerations (offload engines) |
174 | |||
175 | ends |
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176 | |||
177 | |||
178 | ; Exactly as it says.. |
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179 | macro pseudo_random reg { |
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180 | add reg, [esp] |
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181 | rol reg, 5 |
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182 | xor reg, [timer_ticks] |
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183 | ; add reg, [CPU_FREQ] |
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184 | imul reg, 214013 |
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185 | xor reg, 0xdeadbeef |
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186 | rol reg, 9 |
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261 | hidnplayr | 187 | } |
188 | |||
3555 | Serge | 189 | ; Network to Hardware byte order (dword) |
190 | macro ntohd reg { |
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261 | hidnplayr | 191 | |
3555 | Serge | 192 | rol word reg, 8 |
193 | rol dword reg, 16 |
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194 | rol word reg , 8 |
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195 | |||
196 | } |
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197 | |||
198 | ; Network to Hardware byte order (word) |
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199 | macro ntohw reg { |
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200 | |||
201 | rol word reg, 8 |
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202 | |||
203 | } |
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204 | |||
205 | |||
261 | hidnplayr | 206 | include "queue.inc" |
3555 | Serge | 207 | |
208 | include "loopback.inc" |
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209 | include "ethernet.inc" |
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210 | |||
211 | include "PPPoE.inc" |
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212 | |||
213 | include "ARP.inc" |
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214 | include "IPv4.inc" |
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215 | include "IPv6.inc" |
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216 | |||
217 | include "icmp.inc" |
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218 | include "udp.inc" |
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219 | include "tcp.inc" |
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220 | |||
261 | hidnplayr | 221 | include "socket.inc" |
222 | |||
223 | |||
1 | ha | 224 | |
3725 | Serge | 225 | uglobal |
3555 | Serge | 226 | align 4 |
909 | mikedld | 227 | |
3555 | Serge | 228 | NET_RUNNING dd ? |
3626 | Serge | 229 | NET_DRV_LIST rd NET_DEVICES_MAX |
1 | ha | 230 | |
3555 | Serge | 231 | endg |
1 | ha | 232 | |
233 | |||
3555 | Serge | 234 | ;----------------------------------------------------------------- |
1 | ha | 235 | ; |
3555 | Serge | 236 | ; stack_init |
1 | ha | 237 | ; |
3555 | Serge | 238 | ; This function calls all network init procedures |
239 | ; |
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240 | ; IN: / |
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241 | ; OUT: / |
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242 | ; |
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243 | ;----------------------------------------------------------------- |
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1168 | Lrz | 244 | align 4 |
3555 | Serge | 245 | stack_init: |
1 | ha | 246 | |
3555 | Serge | 247 | ; Init the network drivers list |
248 | xor eax, eax |
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249 | mov edi, NET_RUNNING |
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3626 | Serge | 250 | mov ecx, (NET_DEVICES_MAX + 2) |
3725 | Serge | 251 | rep stosd |
1 | ha | 252 | |
4265 | Serge | 253 | ETH_init |
254 | |||
3555 | Serge | 255 | PPPoE_init |
1 | ha | 256 | |
3555 | Serge | 257 | IPv4_init |
258 | ; IPv6_init |
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259 | ICMP_init |
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1 | ha | 260 | |
3555 | Serge | 261 | ARP_init |
262 | UDP_init |
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263 | TCP_init |
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1 | ha | 264 | |
3555 | Serge | 265 | SOCKET_init |
1 | ha | 266 | |
3626 | Serge | 267 | LOOP_init |
268 | |||
3555 | Serge | 269 | mov [net_tmr_count], 0 |
1 | ha | 270 | |
2434 | Serge | 271 | ret |
1 | ha | 272 | |
273 | |||
274 | |||
3555 | Serge | 275 | ; Wakeup every tick. |
276 | proc stack_handler_has_work? |
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1 | ha | 277 | |
3725 | Serge | 278 | mov eax, [timer_ticks] |
279 | cmp eax, [net_10ms] |
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1 | ha | 280 | |
2434 | Serge | 281 | ret |
261 | hidnplayr | 282 | endp |
1 | ha | 283 | |
3555 | Serge | 284 | |
285 | ;----------------------------------------------------------------- |
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1 | ha | 286 | ; |
3555 | Serge | 287 | ; stack_handler |
1 | ha | 288 | ; |
3555 | Serge | 289 | ; This function is called in kernel loop |
290 | ; |
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291 | ; IN: / |
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292 | ; OUT: / |
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293 | ; |
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294 | ;----------------------------------------------------------------- |
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295 | align 4 |
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296 | stack_handler: |
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261 | hidnplayr | 297 | |
3555 | Serge | 298 | ; Test for 10ms tick |
299 | mov eax, [timer_ticks] |
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300 | cmp eax, [net_10ms] |
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301 | je .exit |
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302 | mov [net_10ms], eax |
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261 | hidnplayr | 303 | |
3555 | Serge | 304 | cmp [NET_RUNNING], 0 |
305 | je .exit |
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1 | ha | 306 | |
3555 | Serge | 307 | test [net_10ms], 0x0f ; 160ms |
308 | jnz .exit |
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1 | ha | 309 | |
3555 | Serge | 310 | TCP_timer_160ms |
1 | ha | 311 | |
3555 | Serge | 312 | test [net_10ms], 0x3f ; 640ms |
313 | jnz .exit |
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1 | ha | 314 | |
3555 | Serge | 315 | TCP_timer_640ms |
316 | ARP_decrease_entry_ttls |
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317 | IPv4_decrease_fragment_ttls |
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1 | ha | 318 | |
3555 | Serge | 319 | .exit: |
320 | ret |
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1 | ha | 321 | |
322 | |||
3908 | Serge | 323 | align 4 |
324 | NET_packet_free: |
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325 | and dword[esp+4], not 0xfff |
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326 | jmp kernel_free |
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1 | ha | 327 | |
3908 | Serge | 328 | |
3555 | Serge | 329 | align 4 |
330 | NET_link_changed: |
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323 | hidnplayr | 331 | |
3626 | Serge | 332 | DEBUGF DEBUG_NETWORK_VERBOSE, "NET_link_changed device=0x%x status=0x%x\n", ebx, [ebx + NET_DEVICE.link_state] |
1 | ha | 333 | |
3555 | Serge | 334 | align 4 |
335 | NET_send_event: |
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1 | ha | 336 | |
3589 | Serge | 337 | DEBUGF DEBUG_NETWORK_VERBOSE, "NET_send_event\n" |
1 | ha | 338 | |
3555 | Serge | 339 | ; Send event to all applications |
340 | push edi ecx |
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341 | mov edi, SLOT_BASE |
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342 | mov ecx, [TASK_COUNT] |
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343 | .loop: |
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344 | add edi, 256 |
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345 | or [edi + APPDATA.event_mask], EVENT_NETWORK2 |
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346 | loop .loop |
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347 | pop ecx edi |
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1 | ha | 348 | |
3555 | Serge | 349 | ret |
1 | ha | 350 | |
351 | |||
352 | |||
3555 | Serge | 353 | ;----------------------------------------------------------------- |
354 | ; |
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355 | ; NET_add_device: |
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356 | ; |
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357 | ; This function is called by the network drivers, |
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358 | ; to register each running NIC to the kernel |
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359 | ; |
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360 | ; IN: Pointer to device structure in ebx |
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361 | ; OUT: Device num in eax, -1 on error |
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362 | ; |
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363 | ;----------------------------------------------------------------- |
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364 | align 4 |
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365 | NET_add_device: |
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1 | ha | 366 | |
3589 | Serge | 367 | DEBUGF DEBUG_NETWORK_VERBOSE, "NET_Add_Device: %x\n", ebx ;;; TODO: use mutex to lock net device list |
1 | ha | 368 | |
3626 | Serge | 369 | cmp [NET_RUNNING], NET_DEVICES_MAX |
3555 | Serge | 370 | jae .error |
1 | ha | 371 | |
3555 | Serge | 372 | ;---------------------------------- |
373 | ; Check if device is already listed |
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374 | mov eax, ebx |
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3626 | Serge | 375 | mov ecx, NET_DEVICES_MAX ; We need to check whole list because a device may be removed without re-organizing list |
3555 | Serge | 376 | mov edi, NET_DRV_LIST |
1 | ha | 377 | |
3725 | Serge | 378 | repne scasd ; See if device is already in the list |
3555 | Serge | 379 | jz .error |
1 | ha | 380 | |
3555 | Serge | 381 | ;---------------------------- |
382 | ; Find empty slot in the list |
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383 | xor eax, eax |
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3626 | Serge | 384 | mov ecx, NET_DEVICES_MAX |
3555 | Serge | 385 | mov edi, NET_DRV_LIST |
1 | ha | 386 | |
3725 | Serge | 387 | repne scasd |
3555 | Serge | 388 | jnz .error |
1 | ha | 389 | |
3555 | Serge | 390 | sub edi, 4 |
1 | ha | 391 | |
3555 | Serge | 392 | ;----------------------------- |
393 | ; Add device to the found slot |
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394 | mov [edi], ebx ; add device to list |
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1 | ha | 395 | |
3555 | Serge | 396 | mov eax, edi ; Calculate device number in eax |
397 | sub eax, NET_DRV_LIST |
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398 | shr eax, 2 |
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1 | ha | 399 | |
3555 | Serge | 400 | inc [NET_RUNNING] ; Indicate that one more network device is up and running |
1 | ha | 401 | |
3555 | Serge | 402 | call NET_send_event |
1 | ha | 403 | |
3589 | Serge | 404 | DEBUGF DEBUG_NETWORK_VERBOSE, "Device number: %u\n", eax |
2434 | Serge | 405 | ret |
1 | ha | 406 | |
3555 | Serge | 407 | .error: |
408 | or eax, -1 |
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3589 | Serge | 409 | DEBUGF DEBUG_NETWORK_ERROR, "Adding network device failed\n" |
2434 | Serge | 410 | ret |
261 | hidnplayr | 411 | |
1 | ha | 412 | |
413 | |||
3555 | Serge | 414 | ;----------------------------------------------------------------- |
415 | ; |
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416 | ; NET_Remove_Device: |
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417 | ; |
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3626 | Serge | 418 | ; This function is called by network drivers, |
3555 | Serge | 419 | ; to unregister network devices from the kernel |
420 | ; |
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421 | ; IN: Pointer to device structure in ebx |
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422 | ; OUT: eax: -1 on error |
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423 | ; |
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424 | ;----------------------------------------------------------------- |
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425 | align 4 |
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426 | NET_remove_device: |
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379 | serge | 427 | |
3555 | Serge | 428 | cmp [NET_RUNNING], 0 |
429 | je .error |
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261 | hidnplayr | 430 | |
3555 | Serge | 431 | ;---------------------------- |
432 | ; Find the driver in the list |
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379 | serge | 433 | |
3555 | Serge | 434 | mov eax, ebx |
3626 | Serge | 435 | mov ecx, NET_DEVICES_MAX |
436 | mov edi, NET_DRV_LIST |
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261 | hidnplayr | 437 | |
3725 | Serge | 438 | repne scasd |
3555 | Serge | 439 | jnz .error |
379 | serge | 440 | |
3555 | Serge | 441 | ;------------------------ |
442 | ; Remove it from the list |
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379 | serge | 443 | |
3555 | Serge | 444 | xor eax, eax |
445 | mov dword [edi-4], eax |
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3626 | Serge | 446 | dec [NET_RUNNING] |
3555 | Serge | 447 | |
448 | call NET_send_event |
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449 | |||
3626 | Serge | 450 | xor eax, eax |
1369 | Lrz | 451 | ret |
379 | serge | 452 | |
3555 | Serge | 453 | .error: |
454 | or eax, -1 |
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1369 | Lrz | 455 | ret |
379 | serge | 456 | |
261 | hidnplayr | 457 | |
1 | ha | 458 | |
3555 | Serge | 459 | ;----------------------------------------------------------------- |
1 | ha | 460 | ; |
3555 | Serge | 461 | ; NET_ptr_to_num |
1 | ha | 462 | ; |
3555 | Serge | 463 | ; IN: ebx = ptr to device struct |
464 | ; OUT: edi = -1 on error, device number otherwise |
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465 | ; |
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466 | ;----------------------------------------------------------------- |
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1369 | Lrz | 467 | align 4 |
3555 | Serge | 468 | NET_ptr_to_num: |
3725 | Serge | 469 | |
470 | call NET_ptr_to_num4 |
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471 | ror edi, 2 ; If -1, stay -1 |
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472 | ; valid device numbers have last two bits 0, so do just shr |
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473 | |||
474 | ret |
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475 | |||
476 | align 4 |
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477 | NET_ptr_to_num4: ; Todo, place number in device structure so we only need to verify? |
||
478 | |||
3555 | Serge | 479 | push ecx |
1369 | Lrz | 480 | |
3626 | Serge | 481 | mov ecx, NET_DEVICES_MAX |
3555 | Serge | 482 | mov edi, NET_DRV_LIST |
483 | .loop: |
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484 | cmp ebx, [edi] |
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3725 | Serge | 485 | je .found |
3555 | Serge | 486 | add edi, 4 |
487 | dec ecx |
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488 | jnz .loop |
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1 | ha | 489 | |
3555 | Serge | 490 | or edi, -1 |
491 | pop ecx |
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2434 | Serge | 492 | ret |
1 | ha | 493 | |
3555 | Serge | 494 | .found: |
495 | sub edi, NET_DRV_LIST |
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496 | pop ecx |
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2434 | Serge | 497 | ret |
1 | ha | 498 | |
3555 | Serge | 499 | ;----------------------------------------------------------------- |
1 | ha | 500 | ; |
3555 | Serge | 501 | ; checksum_1 |
1 | ha | 502 | ; |
3555 | Serge | 503 | ; This is the first of two functions needed to calculate a checksum. |
504 | ; |
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505 | ; IN: edx = start offset for semi-checksum |
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506 | ; esi = pointer to data |
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507 | ; ecx = data size |
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508 | ; OUT: edx = semi-checksum |
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509 | ; |
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510 | ; |
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511 | ; Code was optimized by diamond |
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512 | ; |
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513 | ;----------------------------------------------------------------- |
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514 | align 4 |
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515 | checksum_1: |
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1369 | Lrz | 516 | |
3555 | Serge | 517 | shr ecx, 1 |
518 | pushf |
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519 | jz .no_2 |
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1369 | Lrz | 520 | |
3555 | Serge | 521 | shr ecx, 1 |
522 | pushf |
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523 | jz .no_4 |
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1369 | Lrz | 524 | |
3555 | Serge | 525 | shr ecx, 1 |
526 | pushf |
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527 | jz .no_8 |
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1369 | Lrz | 528 | |
3555 | Serge | 529 | .loop: |
530 | add dl, [esi+1] |
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531 | adc dh, [esi+0] |
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1 | ha | 532 | |
3555 | Serge | 533 | adc dl, [esi+3] |
534 | adc dh, [esi+2] |
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1 | ha | 535 | |
3555 | Serge | 536 | adc dl, [esi+5] |
537 | adc dh, [esi+4] |
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1 | ha | 538 | |
3555 | Serge | 539 | adc dl, [esi+7] |
540 | adc dh, [esi+6] |
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1 | ha | 541 | |
3555 | Serge | 542 | adc edx, 0 |
543 | add esi, 8 |
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1 | ha | 544 | |
3555 | Serge | 545 | dec ecx |
546 | jnz .loop |
||
1 | ha | 547 | |
3555 | Serge | 548 | adc edx, 0 |
1 | ha | 549 | |
3555 | Serge | 550 | .no_8: |
551 | popf |
||
552 | jnc .no_4 |
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1 | ha | 553 | |
3555 | Serge | 554 | add dl, [esi+1] |
555 | adc dh, [esi+0] |
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1 | ha | 556 | |
3555 | Serge | 557 | adc dl, [esi+3] |
558 | adc dh, [esi+2] |
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1 | ha | 559 | |
3555 | Serge | 560 | adc edx, 0 |
561 | add esi, 4 |
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1 | ha | 562 | |
3555 | Serge | 563 | .no_4: |
564 | popf |
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565 | jnc .no_2 |
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1 | ha | 566 | |
3555 | Serge | 567 | add dl, [esi+1] |
568 | adc dh, [esi+0] |
||
1 | ha | 569 | |
3555 | Serge | 570 | adc edx, 0 |
571 | inc esi |
||
572 | inc esi |
||
1 | ha | 573 | |
3555 | Serge | 574 | .no_2: |
575 | popf |
||
576 | jnc .end |
||
1 | ha | 577 | |
3555 | Serge | 578 | add dh, [esi+0] |
579 | adc edx, 0 |
||
580 | .end: |
||
2434 | Serge | 581 | ret |
1 | ha | 582 | |
3555 | Serge | 583 | ;----------------------------------------------------------------- |
584 | ; |
||
585 | ; checksum_2 |
||
586 | ; |
||
587 | ; This function calculates the final ip/tcp/udp checksum for you |
||
588 | ; |
||
589 | ; IN: edx = semi-checksum |
||
590 | ; OUT: dx = checksum (in INET byte order) |
||
591 | ; |
||
592 | ;----------------------------------------------------------------- |
||
593 | align 4 |
||
594 | checksum_2: |
||
1 | ha | 595 | |
3555 | Serge | 596 | mov ecx, edx |
597 | shr ecx, 16 |
||
598 | and edx, 0xffff |
||
599 | add edx, ecx |
||
1 | ha | 600 | |
3555 | Serge | 601 | mov ecx, edx |
602 | shr ecx, 16 |
||
603 | add dx, cx |
||
604 | test dx, dx ; it seems that ZF is not set when CF is set :( |
||
605 | not dx |
||
606 | jnz .not_zero |
||
607 | dec dx |
||
608 | .not_zero: |
||
609 | xchg dl, dh |
||
1 | ha | 610 | |
3589 | Serge | 611 | DEBUGF DEBUG_NETWORK_VERBOSE, "Checksum: %x\n", dx |
3555 | Serge | 612 | |
2434 | Serge | 613 | ret |
1 | ha | 614 | |
615 | |||
616 | |||
3555 | Serge | 617 | ;---------------------------------------------------------------- |
618 | ; |
||
3626 | Serge | 619 | ; System function to work with network devices (74) |
3555 | Serge | 620 | ; |
621 | ;---------------------------------------------------------------- |
||
622 | align 4 |
||
3626 | Serge | 623 | sys_network: |
1 | ha | 624 | |
3908 | Serge | 625 | cmp bl, 255 |
3555 | Serge | 626 | jne @f |
1 | ha | 627 | |
3555 | Serge | 628 | mov eax, [NET_RUNNING] |
3626 | Serge | 629 | mov [esp+32], eax |
630 | ret |
||
1 | ha | 631 | |
3555 | Serge | 632 | @@: |
3626 | Serge | 633 | cmp bh, NET_DEVICES_MAX ; Check if device number exists |
3555 | Serge | 634 | jae .doesnt_exist |
1 | ha | 635 | |
3555 | Serge | 636 | mov esi, ebx |
637 | and esi, 0x0000ff00 |
||
638 | shr esi, 6 |
||
1 | ha | 639 | |
3555 | Serge | 640 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
641 | je .doesnt_exist |
||
1 | ha | 642 | |
3555 | Serge | 643 | mov eax, [esi + NET_DRV_LIST] |
1 | ha | 644 | |
3555 | Serge | 645 | and ebx, 0x000000ff |
646 | cmp ebx, .number |
||
647 | ja .doesnt_exist |
||
648 | jmp dword [.table + 4*ebx] |
||
1 | ha | 649 | |
3555 | Serge | 650 | .table: |
651 | dd .get_type ; 0 |
||
652 | dd .get_dev_name ; 1 |
||
653 | dd .reset ; 2 |
||
654 | dd .stop ; 3 |
||
655 | dd .get_ptr ; 4 |
||
656 | dd .get_drv_name ; 5 |
||
3626 | Serge | 657 | |
658 | dd .packets_tx ; 6 |
||
659 | dd .packets_rx ; 7 |
||
660 | dd .bytes_tx ; 8 |
||
661 | dd .bytes_rx ; 9 |
||
662 | dd .state ; 10 |
||
3555 | Serge | 663 | .number = ($ - .table) / 4 - 1 |
1 | ha | 664 | |
3626 | Serge | 665 | .get_type: |
666 | mov eax, [eax + NET_DEVICE.device_type] |
||
667 | mov [esp+32], eax |
||
668 | ret |
||
1 | ha | 669 | |
3626 | Serge | 670 | .get_dev_name: |
3555 | Serge | 671 | mov esi, [eax + NET_DEVICE.name] |
672 | mov edi, ecx |
||
1 | ha | 673 | |
3555 | Serge | 674 | mov ecx, 64/4 ; max length |
3725 | Serge | 675 | rep movsd |
3555 | Serge | 676 | |
2434 | Serge | 677 | xor eax, eax |
3626 | Serge | 678 | mov [esp+32], eax |
679 | ret |
||
1 | ha | 680 | |
3626 | Serge | 681 | .reset: |
3555 | Serge | 682 | call [eax + NET_DEVICE.reset] |
3626 | Serge | 683 | mov [esp+32], eax |
684 | ret |
||
1 | ha | 685 | |
3626 | Serge | 686 | .stop: |
3555 | Serge | 687 | call [eax + NET_DEVICE.unload] |
3626 | Serge | 688 | mov [esp+32], eax |
689 | ret |
||
1 | ha | 690 | |
691 | |||
3626 | Serge | 692 | .get_ptr: |
693 | mov [esp+32], eax |
||
694 | ret |
||
1 | ha | 695 | |
696 | |||
3626 | Serge | 697 | .get_drv_name: |
2434 | Serge | 698 | xor eax, eax |
3626 | Serge | 699 | mov [esp+32], eax |
700 | ret |
||
3555 | Serge | 701 | |
3626 | Serge | 702 | .packets_tx: |
703 | mov eax, [eax + NET_DEVICE.packets_tx] |
||
704 | mov [esp+32], eax |
||
705 | ret |
||
3555 | Serge | 706 | |
3626 | Serge | 707 | .packets_rx: |
708 | mov eax, [eax + NET_DEVICE.packets_rx] |
||
709 | mov [esp+32], eax |
||
710 | ret |
||
3555 | Serge | 711 | |
3626 | Serge | 712 | .bytes_tx: |
713 | mov ebx, dword [eax + NET_DEVICE.bytes_tx + 4] |
||
714 | mov [esp+20], ebx |
||
715 | mov eax, dword [eax + NET_DEVICE.bytes_tx] |
||
716 | mov [esp+32], eax |
||
717 | ret |
||
3555 | Serge | 718 | |
3626 | Serge | 719 | .bytes_rx: |
720 | mov ebx, dword [eax + NET_DEVICE.bytes_rx + 4] |
||
721 | mov [esp+20], ebx |
||
722 | mov eax, dword [eax + NET_DEVICE.bytes_rx] |
||
723 | mov [esp+32], eax |
||
724 | ret |
||
3555 | Serge | 725 | |
3626 | Serge | 726 | .state: |
727 | mov eax, [eax + NET_DEVICE.link_state] |
||
3555 | Serge | 728 | mov [esp+32], eax |
2434 | Serge | 729 | ret |
1 | ha | 730 | |
731 | |||
3626 | Serge | 732 | .doesnt_exist: |
733 | mov dword[esp+32], -1 |
||
734 | ret |
||
735 | |||
736 | |||
737 | |||
3555 | Serge | 738 | ;---------------------------------------------------------------- |
1 | ha | 739 | ; |
3555 | Serge | 740 | ; System function to work with protocols (76) |
1 | ha | 741 | ; |
3555 | Serge | 742 | ;---------------------------------------------------------------- |
743 | align 4 |
||
744 | sys_protocols: |
||
3626 | Serge | 745 | cmp bh, NET_DEVICES_MAX ; Check if device number exists |
3555 | Serge | 746 | jae .doesnt_exist |
1 | ha | 747 | |
3555 | Serge | 748 | mov esi, ebx |
749 | and esi, 0x0000ff00 |
||
750 | shr esi, 6 ; now we have the device num * 4 in esi |
||
751 | cmp [esi + NET_DRV_LIST], 0 ; check if driver is running |
||
752 | je .doesnt_exist |
||
1 | ha | 753 | |
3555 | Serge | 754 | push .return ; return address (we will be using jumps instead of calls) |
1 | ha | 755 | |
3555 | Serge | 756 | mov eax, ebx ; set ax to protocol number |
757 | shr eax, 16 ; |
||
1 | ha | 758 | |
3555 | Serge | 759 | cmp ax, API_ETH |
760 | je ETH_api |
||
1 | ha | 761 | |
3555 | Serge | 762 | cmp ax, API_IPv4 |
763 | je IPv4_api |
||
1 | ha | 764 | |
3555 | Serge | 765 | cmp ax, API_ICMP |
766 | je ICMP_api |
||
1 | ha | 767 | |
3555 | Serge | 768 | cmp ax, API_UDP |
769 | je UDP_api |
||
1 | ha | 770 | |
3555 | Serge | 771 | cmp ax, API_TCP |
772 | je TCP_api |
||
1 | ha | 773 | |
3555 | Serge | 774 | cmp ax, API_ARP |
775 | je ARP_api |
||
1 | ha | 776 | |
3555 | Serge | 777 | cmp ax, API_PPPOE |
778 | je PPPoE_api |
||
1 | ha | 779 | |
3555 | Serge | 780 | cmp ax, API_IPv6 |
781 | je IPv6_api |
||
1 | ha | 782 | |
3555 | Serge | 783 | add esp, 4 ; if we reached here, no function was called, so we need to balance stack |
1 | ha | 784 | |
3555 | Serge | 785 | .doesnt_exist: |
786 | mov eax, -1 |
||
1 | ha | 787 | |
3555 | Serge | 788 | .return: |
789 | mov [esp+28+4], eax ; return eax value to the program |
||
2434 | Serge | 790 | ret |