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3545 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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5363 | yogev_ezra | 3 | ;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;; |
3545 | hidnplayr | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;; STACK.INC ;; |
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7 | ;; ;; |
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8 | ;; 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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23 | |||
4850 | mario79 | 24 | $Revision: 5536 $ |
3545 | hidnplayr | 25 | |
26 | uglobal |
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27 | net_10ms dd ? |
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28 | net_tmr_count dw ? |
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29 | endg |
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30 | |||
3556 | hidnplayr | 31 | DEBUG_NETWORK_ERROR = 1 |
4388 | hidnplayr | 32 | DEBUG_NETWORK_VERBOSE = 0 |
3556 | hidnplayr | 33 | |
3600 | hidnplayr | 34 | NET_DEVICES_MAX = 16 |
5528 | hidnplayr | 35 | NET_BUFFERS = 512 |
36 | NET_BUFFER_SIZE = 2048 |
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3545 | hidnplayr | 37 | ARP_BLOCK = 1 ; true or false |
38 | |||
3600 | hidnplayr | 39 | EPHEMERAL_PORT_MIN = 49152 |
40 | EPHEMERAL_PORT_MAX = 61000 |
||
3545 | hidnplayr | 41 | MIN_EPHEMERAL_PORT_N = 0x00C0 ; same in Network byte order (FIXME) |
42 | MAX_EPHEMERAL_PORT_N = 0x48EE ; same in Network byte order (FIXME) |
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43 | |||
44 | ; Ethernet protocol numbers |
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3600 | hidnplayr | 45 | ETHER_PROTO_ARP = 0x0608 |
46 | ETHER_PROTO_IPv4 = 0x0008 |
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47 | ETHER_PROTO_IPv6 = 0xDD86 |
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48 | ETHER_PROTO_PPP_DISCOVERY = 0x6388 |
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49 | ETHER_PROTO_PPP_SESSION = 0x6488 |
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3545 | hidnplayr | 50 | |
3600 | hidnplayr | 51 | ; Internet protocol numbers |
52 | IP_PROTO_IP = 0 |
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53 | IP_PROTO_ICMP = 1 |
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54 | IP_PROTO_TCP = 6 |
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55 | IP_PROTO_UDP = 17 |
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56 | |||
3545 | hidnplayr | 57 | ; PPP protocol numbers |
3600 | hidnplayr | 58 | PPP_PROTO_IPv4 = 0x2100 |
59 | PPP_PROTO_IPV6 = 0x5780 |
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60 | PPP_PROTO_ETHERNET = 666 ; FIXME |
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3545 | hidnplayr | 61 | |
62 | ;Protocol family |
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63 | AF_UNSPEC = 0 |
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64 | AF_LOCAL = 1 |
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65 | AF_INET4 = 2 |
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66 | AF_INET6 = 10 |
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3600 | hidnplayr | 67 | AF_PPP = 777 ; FIXME |
3545 | hidnplayr | 68 | |
69 | ; Socket types |
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70 | SOCK_STREAM = 1 |
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71 | SOCK_DGRAM = 2 |
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72 | SOCK_RAW = 3 |
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73 | |||
74 | ; Socket options |
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75 | SO_ACCEPTCON = 1 shl 0 |
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76 | SO_BROADCAST = 1 shl 1 |
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77 | SO_DEBUG = 1 shl 2 |
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78 | SO_DONTROUTE = 1 shl 3 |
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79 | SO_KEEPALIVE = 1 shl 4 |
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80 | SO_OOBINLINE = 1 shl 5 |
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81 | SO_REUSEADDR = 1 shl 6 |
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82 | SO_REUSEPORT = 1 shl 7 |
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83 | SO_USELOOPBACK = 1 shl 8 |
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84 | SO_BINDTODEVICE = 1 shl 9 |
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85 | |||
86 | SO_NONBLOCK = 1 shl 31 |
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87 | |||
88 | ; Socket flags for user calls |
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89 | MSG_PEEK = 0x02 |
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90 | MSG_DONTWAIT = 0x40 |
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91 | |||
92 | ; Socket level |
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93 | SOL_SOCKET = 0 |
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94 | |||
95 | |||
96 | ; Socket States |
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3600 | hidnplayr | 97 | SS_NOFDREF = 0x0001 ; no file table ref any more |
98 | SS_ISCONNECTED = 0x0002 ; socket connected to a peer |
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99 | SS_ISCONNECTING = 0x0004 ; in process of connecting to peer |
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100 | SS_ISDISCONNECTING = 0x0008 ; in process of disconnecting |
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101 | SS_CANTSENDMORE = 0x0010 ; can't send more data to peer |
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102 | SS_CANTRCVMORE = 0x0020 ; can't receive more data from peer |
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103 | SS_RCVATMARK = 0x0040 ; at mark on input |
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104 | SS_ISABORTING = 0x0080 ; aborting fd references - close() |
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105 | SS_RESTARTSYS = 0x0100 ; restart blocked system calls |
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106 | SS_ISDISCONNECTED = 0x0800 ; socket disconnected from peer |
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3545 | hidnplayr | 107 | |
3674 | hidnplayr | 108 | SS_ASYNC = 0x1000 ; async i/o notify |
109 | SS_ISCONFIRMING = 0x2000 ; deciding to accept connection req |
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110 | SS_MORETOCOME = 0x4000 |
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3545 | hidnplayr | 111 | |
112 | SS_BLOCKED = 0x8000 |
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113 | |||
114 | |||
4959 | hidnplayr | 115 | SOCKET_MAXDATA = 4096*64 ; must be 4096*(power of 2) where 'power of 2' is at least 8 |
3600 | hidnplayr | 116 | MAX_backlog = 20 ; maximum backlog for stream sockets |
3545 | hidnplayr | 117 | |
118 | ; Error Codes |
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3674 | hidnplayr | 119 | ENOBUFS = 1 |
4025 | hidnplayr | 120 | EINPROGRESS = 2 |
3674 | hidnplayr | 121 | EOPNOTSUPP = 4 |
122 | EWOULDBLOCK = 6 |
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123 | ENOTCONN = 9 |
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124 | EALREADY = 10 |
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125 | EINVAL = 11 |
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126 | EMSGSIZE = 12 |
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127 | ENOMEM = 18 |
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128 | EADDRINUSE = 20 |
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3545 | hidnplayr | 129 | ECONNREFUSED = 61 |
130 | ECONNRESET = 52 |
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4025 | hidnplayr | 131 | EISCONN = 56 |
3545 | hidnplayr | 132 | ETIMEDOUT = 60 |
133 | ECONNABORTED = 53 |
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134 | |||
135 | ; Api protocol numbers |
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136 | API_ETH = 0 |
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137 | API_IPv4 = 1 |
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138 | API_ICMP = 2 |
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139 | API_UDP = 3 |
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140 | API_TCP = 4 |
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141 | API_ARP = 5 |
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142 | API_PPPOE = 6 |
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143 | API_IPv6 = 7 |
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144 | |||
3600 | hidnplayr | 145 | ; Network device types |
146 | NET_DEVICE_LOOPBACK = 0 |
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147 | NET_DEVICE_ETH = 1 |
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148 | NET_DEVICE_SLIP = 2 |
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149 | |||
150 | ; Network link types (link protocols) |
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5528 | hidnplayr | 151 | NET_LINK_LOOPBACK = 0 |
3600 | hidnplayr | 152 | NET_LINK_MAC = 1 ; Media access control (ethernet, isdn, ...) |
153 | NET_LINK_PPP = 2 ; Point to Point Protocol (PPPoE, ...) |
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154 | NET_LINK_IEEE802.11 = 3 ; IEEE 802.11 (WiFi) |
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155 | |||
156 | ; Hardware acceleration bits |
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4387 | hidnplayr | 157 | NET_HWACC_TCP_IPv4_IN = 1 shl 0 |
158 | NET_HWACC_TCP_IPv4_OUT = 1 shl 1 |
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3545 | hidnplayr | 159 | |
5522 | hidnplayr | 160 | ; Network frame types |
161 | NET_BUFF_LOOPBACK = 0 |
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162 | NET_BUFF_ETH = 1 |
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163 | |||
3545 | hidnplayr | 164 | struct NET_DEVICE |
165 | |||
3600 | hidnplayr | 166 | device_type dd ? ; Type field |
3545 | hidnplayr | 167 | mtu dd ? ; Maximal Transmission Unit |
168 | name dd ? ; Ptr to 0 terminated string |
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169 | |||
170 | unload dd ? ; Ptrs to driver functions |
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171 | reset dd ? ; |
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172 | transmit dd ? ; |
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173 | |||
174 | bytes_tx dq ? ; Statistics, updated by the driver |
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175 | bytes_rx dq ? ; |
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176 | packets_tx dd ? ; |
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177 | packets_rx dd ? ; |
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178 | |||
3600 | hidnplayr | 179 | link_state dd ? ; link state (0 = no link) |
3545 | hidnplayr | 180 | hwacc dd ? ; bitmask stating enabled HW accelerations (offload engines) |
181 | |||
182 | ends |
||
183 | |||
5522 | hidnplayr | 184 | struct NET_BUFF |
3545 | hidnplayr | 185 | |
5522 | hidnplayr | 186 | NextPtr dd ? ; pointer to next frame in list |
187 | PrevPtr dd ? ; pointer to previous frame in list |
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188 | device dd ? ; ptr to NET_DEVICE structure |
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189 | type dd ? ; encapsulation type: e.g. Ethernet |
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190 | length dd ? ; size of encapsulated data |
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191 | offset dd ? ; offset to actual data (24 bytes for default frame) |
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192 | data rb 0 |
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193 | |||
194 | ends |
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195 | |||
196 | |||
3545 | hidnplayr | 197 | ; Exactly as it says.. |
198 | macro pseudo_random reg { |
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199 | add reg, [esp] |
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200 | rol reg, 5 |
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201 | xor reg, [timer_ticks] |
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202 | ; add reg, [CPU_FREQ] |
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203 | imul reg, 214013 |
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204 | xor reg, 0xdeadbeef |
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205 | rol reg, 9 |
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206 | } |
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207 | |||
208 | ; Network to Hardware byte order (dword) |
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209 | macro ntohd reg { |
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210 | |||
211 | rol word reg, 8 |
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212 | rol dword reg, 16 |
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213 | rol word reg , 8 |
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214 | |||
215 | } |
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216 | |||
217 | ; Network to Hardware byte order (word) |
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218 | macro ntohw reg { |
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219 | |||
220 | rol word reg, 8 |
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221 | |||
222 | } |
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223 | |||
224 | |||
225 | include "queue.inc" |
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226 | |||
227 | include "loopback.inc" |
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228 | include "ethernet.inc" |
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229 | |||
230 | include "PPPoE.inc" |
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231 | |||
232 | include "ARP.inc" |
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233 | include "IPv4.inc" |
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234 | include "IPv6.inc" |
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235 | |||
236 | include "icmp.inc" |
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237 | include "udp.inc" |
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238 | include "tcp.inc" |
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239 | |||
240 | include "socket.inc" |
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241 | |||
242 | |||
243 | |||
3698 | hidnplayr | 244 | uglobal |
3545 | hidnplayr | 245 | align 4 |
246 | |||
5528 | hidnplayr | 247 | NET_RUNNING dd ? |
248 | NET_DRV_LIST rd NET_DEVICES_MAX |
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3545 | hidnplayr | 249 | |
5528 | hidnplayr | 250 | NET_BUFFS_FREE rd NET_BUFFERS |
251 | .current dd ? |
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252 | |||
3545 | hidnplayr | 253 | endg |
254 | |||
255 | |||
256 | ;----------------------------------------------------------------- |
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257 | ; |
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258 | ; stack_init |
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259 | ; |
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260 | ; This function calls all network init procedures |
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261 | ; |
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262 | ; IN: / |
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263 | ; OUT: / |
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264 | ; |
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265 | ;----------------------------------------------------------------- |
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266 | align 4 |
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267 | stack_init: |
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268 | |||
5528 | hidnplayr | 269 | ; allocate network buffers |
270 | stdcall kernel_alloc, NET_BUFFER_SIZE*NET_BUFFERS |
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271 | test eax, eax |
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272 | jz .fail |
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273 | |||
274 | mov edi, NET_BUFFS_FREE |
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275 | mov ecx, NET_BUFFERS |
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276 | cld |
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277 | .loop: |
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278 | stosd |
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279 | add eax, NET_BUFFER_SIZE |
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280 | dec ecx |
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281 | jnz .loop |
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282 | |||
283 | mov eax, NET_BUFFS_FREE |
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284 | stosd |
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285 | |||
3545 | hidnplayr | 286 | ; Init the network drivers list |
287 | xor eax, eax |
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288 | mov edi, NET_RUNNING |
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5524 | hidnplayr | 289 | mov ecx, (NET_DEVICES_MAX + 1) |
3711 | clevermous | 290 | rep stosd |
3545 | hidnplayr | 291 | |
3982 | hidnplayr | 292 | ETH_init |
293 | |||
3545 | hidnplayr | 294 | PPPoE_init |
295 | |||
296 | IPv4_init |
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297 | ; IPv6_init |
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298 | ICMP_init |
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299 | |||
300 | ARP_init |
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301 | UDP_init |
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302 | TCP_init |
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303 | |||
304 | SOCKET_init |
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305 | |||
3601 | hidnplayr | 306 | LOOP_init |
307 | |||
3545 | hidnplayr | 308 | mov [net_tmr_count], 0 |
5528 | hidnplayr | 309 | ret |
3545 | hidnplayr | 310 | |
5528 | hidnplayr | 311 | .fail: |
312 | DEBUGF DEBUG_NETWORK_ERROR, "Stack init failed!\n" |
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3545 | hidnplayr | 313 | ret |
314 | |||
315 | |||
316 | |||
317 | ; Wakeup every tick. |
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318 | proc stack_handler_has_work? |
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319 | |||
3711 | clevermous | 320 | mov eax, [timer_ticks] |
321 | cmp eax, [net_10ms] |
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3545 | hidnplayr | 322 | |
323 | ret |
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324 | endp |
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325 | |||
326 | |||
327 | ;----------------------------------------------------------------- |
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328 | ; |
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329 | ; stack_handler |
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330 | ; |
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331 | ; This function is called in kernel loop |
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332 | ; |
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333 | ; IN: / |
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334 | ; OUT: / |
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335 | ; |
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336 | ;----------------------------------------------------------------- |
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337 | align 4 |
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338 | stack_handler: |
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339 | |||
340 | ; Test for 10ms tick |
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341 | mov eax, [timer_ticks] |
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342 | cmp eax, [net_10ms] |
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343 | je .exit |
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344 | mov [net_10ms], eax |
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345 | |||
346 | cmp [NET_RUNNING], 0 |
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347 | je .exit |
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348 | |||
349 | test [net_10ms], 0x0f ; 160ms |
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350 | jnz .exit |
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351 | |||
352 | TCP_timer_160ms |
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353 | |||
354 | test [net_10ms], 0x3f ; 640ms |
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355 | jnz .exit |
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356 | |||
357 | ARP_decrease_entry_ttls |
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358 | IPv4_decrease_fragment_ttls |
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359 | |||
5013 | hidnplayr | 360 | xor edx, edx |
361 | mov eax, [TCP_timer1_event] |
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362 | mov ebx, [eax + EVENT.id] |
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363 | xor esi, esi |
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364 | call raise_event |
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365 | |||
3545 | hidnplayr | 366 | .exit: |
367 | ret |
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368 | |||
369 | |||
3861 | hidnplayr | 370 | align 4 |
5528 | hidnplayr | 371 | proc NET_BUFF_alloc stdcall, buffersize |
372 | cmp [buffersize], NET_BUFFER_SIZE |
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373 | ja .too_large |
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5522 | hidnplayr | 374 | |
5528 | hidnplayr | 375 | spin_lock_irqsave |
5522 | hidnplayr | 376 | |
5528 | hidnplayr | 377 | mov eax, [NET_BUFFS_FREE.current] |
378 | cmp eax, NET_BUFFS_FREE+NET_BUFFERS*4 |
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379 | jae .out_of_mem |
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380 | mov eax, [eax] |
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381 | add [NET_BUFFS_FREE.current], 4 |
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382 | |||
383 | spin_unlock_irqrestore |
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384 | |||
5536 | hidnplayr | 385 | DEBUGF DEBUG_NETWORK_VERBOSE, "net alloc: 0x%x\n", eax |
5528 | hidnplayr | 386 | ret |
387 | |||
388 | .out_of_mem: |
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389 | spin_unlock_irqrestore |
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390 | |||
391 | xor eax, eax |
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392 | DEBUGF DEBUG_NETWORK_ERROR, "NET_BUFF_alloc: out of mem!\n" |
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393 | ret |
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394 | |||
395 | .too_large: |
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396 | xor eax, eax |
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397 | DEBUGF DEBUG_NETWORK_ERROR, "NET_BUFF_alloc: too large!\n" |
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398 | ret |
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399 | endp |
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400 | |||
401 | |||
5522 | hidnplayr | 402 | align 4 |
5528 | hidnplayr | 403 | proc NET_BUFF_free stdcall, buffer |
3545 | hidnplayr | 404 | |
5536 | hidnplayr | 405 | DEBUGF DEBUG_NETWORK_VERBOSE, "net free: 0x%x\n", [buffer] |
3861 | hidnplayr | 406 | |
5528 | hidnplayr | 407 | spin_lock_irqsave |
408 | |||
409 | sub [NET_BUFFS_FREE.current], 4 |
||
410 | mov eax, [NET_BUFFS_FREE.current] |
||
411 | push [buffer] |
||
412 | pop dword[eax] |
||
413 | |||
414 | spin_unlock_irqrestore |
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415 | |||
416 | ret |
||
417 | endp |
||
418 | |||
419 | |||
3545 | hidnplayr | 420 | align 4 |
421 | NET_link_changed: |
||
422 | |||
3601 | hidnplayr | 423 | DEBUGF DEBUG_NETWORK_VERBOSE, "NET_link_changed device=0x%x status=0x%x\n", ebx, [ebx + NET_DEVICE.link_state] |
3545 | hidnplayr | 424 | |
425 | align 4 |
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426 | NET_send_event: |
||
427 | |||
3556 | hidnplayr | 428 | DEBUGF DEBUG_NETWORK_VERBOSE, "NET_send_event\n" |
3545 | hidnplayr | 429 | |
430 | ; Send event to all applications |
||
431 | push edi ecx |
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432 | mov edi, SLOT_BASE |
||
433 | mov ecx, [TASK_COUNT] |
||
434 | .loop: |
||
435 | add edi, 256 |
||
436 | or [edi + APPDATA.event_mask], EVENT_NETWORK2 |
||
437 | loop .loop |
||
438 | pop ecx edi |
||
439 | |||
440 | ret |
||
441 | |||
442 | |||
443 | |||
444 | ;----------------------------------------------------------------- |
||
445 | ; |
||
446 | ; NET_add_device: |
||
447 | ; |
||
448 | ; This function is called by the network drivers, |
||
449 | ; to register each running NIC to the kernel |
||
450 | ; |
||
451 | ; IN: Pointer to device structure in ebx |
||
452 | ; OUT: Device num in eax, -1 on error |
||
453 | ; |
||
454 | ;----------------------------------------------------------------- |
||
455 | align 4 |
||
456 | NET_add_device: |
||
457 | |||
3556 | hidnplayr | 458 | DEBUGF DEBUG_NETWORK_VERBOSE, "NET_Add_Device: %x\n", ebx ;;; TODO: use mutex to lock net device list |
3545 | hidnplayr | 459 | |
3600 | hidnplayr | 460 | cmp [NET_RUNNING], NET_DEVICES_MAX |
3545 | hidnplayr | 461 | jae .error |
462 | |||
463 | ;---------------------------------- |
||
464 | ; Check if device is already listed |
||
465 | mov eax, ebx |
||
3600 | hidnplayr | 466 | mov ecx, NET_DEVICES_MAX ; We need to check whole list because a device may be removed without re-organizing list |
3545 | hidnplayr | 467 | mov edi, NET_DRV_LIST |
468 | |||
3711 | clevermous | 469 | repne scasd ; See if device is already in the list |
3545 | hidnplayr | 470 | jz .error |
471 | |||
472 | ;---------------------------- |
||
473 | ; Find empty slot in the list |
||
474 | xor eax, eax |
||
3600 | hidnplayr | 475 | mov ecx, NET_DEVICES_MAX |
3545 | hidnplayr | 476 | mov edi, NET_DRV_LIST |
477 | |||
3711 | clevermous | 478 | repne scasd |
3545 | hidnplayr | 479 | jnz .error |
480 | |||
481 | sub edi, 4 |
||
482 | |||
483 | ;----------------------------- |
||
484 | ; Add device to the found slot |
||
485 | mov [edi], ebx ; add device to list |
||
486 | |||
487 | mov eax, edi ; Calculate device number in eax |
||
488 | sub eax, NET_DRV_LIST |
||
489 | shr eax, 2 |
||
490 | |||
491 | inc [NET_RUNNING] ; Indicate that one more network device is up and running |
||
492 | |||
493 | call NET_send_event |
||
494 | |||
3556 | hidnplayr | 495 | DEBUGF DEBUG_NETWORK_VERBOSE, "Device number: %u\n", eax |
3545 | hidnplayr | 496 | ret |
497 | |||
498 | .error: |
||
499 | or eax, -1 |
||
3556 | hidnplayr | 500 | DEBUGF DEBUG_NETWORK_ERROR, "Adding network device failed\n" |
3545 | hidnplayr | 501 | ret |
502 | |||
503 | |||
504 | |||
505 | ;----------------------------------------------------------------- |
||
506 | ; |
||
507 | ; NET_Remove_Device: |
||
508 | ; |
||
3601 | hidnplayr | 509 | ; This function is called by network drivers, |
3545 | hidnplayr | 510 | ; to unregister network devices from the kernel |
511 | ; |
||
512 | ; IN: Pointer to device structure in ebx |
||
513 | ; OUT: eax: -1 on error |
||
514 | ; |
||
515 | ;----------------------------------------------------------------- |
||
516 | align 4 |
||
517 | NET_remove_device: |
||
518 | |||
519 | cmp [NET_RUNNING], 0 |
||
520 | je .error |
||
521 | |||
522 | ;---------------------------- |
||
523 | ; Find the driver in the list |
||
524 | |||
525 | mov eax, ebx |
||
3600 | hidnplayr | 526 | mov ecx, NET_DEVICES_MAX |
3601 | hidnplayr | 527 | mov edi, NET_DRV_LIST |
3545 | hidnplayr | 528 | |
3711 | clevermous | 529 | repne scasd |
3545 | hidnplayr | 530 | jnz .error |
531 | |||
532 | ;------------------------ |
||
533 | ; Remove it from the list |
||
534 | |||
535 | xor eax, eax |
||
536 | mov dword [edi-4], eax |
||
3601 | hidnplayr | 537 | dec [NET_RUNNING] |
3545 | hidnplayr | 538 | |
539 | call NET_send_event |
||
540 | |||
3601 | hidnplayr | 541 | xor eax, eax |
3545 | hidnplayr | 542 | ret |
543 | |||
544 | .error: |
||
545 | or eax, -1 |
||
546 | ret |
||
547 | |||
548 | |||
549 | |||
550 | ;----------------------------------------------------------------- |
||
551 | ; |
||
552 | ; NET_ptr_to_num |
||
553 | ; |
||
554 | ; IN: ebx = ptr to device struct |
||
555 | ; OUT: edi = -1 on error, device number otherwise |
||
556 | ; |
||
557 | ;----------------------------------------------------------------- |
||
558 | align 4 |
||
559 | NET_ptr_to_num: |
||
3643 | hidnplayr | 560 | |
561 | call NET_ptr_to_num4 |
||
562 | ror edi, 2 ; If -1, stay -1 |
||
563 | ; valid device numbers have last two bits 0, so do just shr |
||
564 | |||
565 | ret |
||
566 | |||
567 | align 4 |
||
568 | NET_ptr_to_num4: ; Todo, place number in device structure so we only need to verify? |
||
569 | |||
5522 | hidnplayr | 570 | test ebx, ebx |
571 | jz .fail |
||
572 | |||
3545 | hidnplayr | 573 | push ecx |
3600 | hidnplayr | 574 | mov ecx, NET_DEVICES_MAX |
3545 | hidnplayr | 575 | mov edi, NET_DRV_LIST |
576 | .loop: |
||
577 | cmp ebx, [edi] |
||
3643 | hidnplayr | 578 | je .found |
3545 | hidnplayr | 579 | add edi, 4 |
580 | dec ecx |
||
581 | jnz .loop |
||
582 | |||
5522 | hidnplayr | 583 | pop ecx |
584 | .fail: |
||
3545 | hidnplayr | 585 | or edi, -1 |
586 | ret |
||
587 | |||
588 | .found: |
||
589 | sub edi, NET_DRV_LIST |
||
590 | pop ecx |
||
591 | ret |
||
592 | |||
593 | ;----------------------------------------------------------------- |
||
594 | ; |
||
595 | ; checksum_1 |
||
596 | ; |
||
597 | ; This is the first of two functions needed to calculate a checksum. |
||
598 | ; |
||
599 | ; IN: edx = start offset for semi-checksum |
||
600 | ; esi = pointer to data |
||
601 | ; ecx = data size |
||
602 | ; OUT: edx = semi-checksum |
||
603 | ; |
||
604 | ; |
||
605 | ; Code was optimized by diamond |
||
606 | ; |
||
607 | ;----------------------------------------------------------------- |
||
608 | align 4 |
||
609 | checksum_1: |
||
610 | |||
611 | shr ecx, 1 |
||
612 | pushf |
||
613 | jz .no_2 |
||
614 | |||
615 | shr ecx, 1 |
||
616 | pushf |
||
617 | jz .no_4 |
||
618 | |||
619 | shr ecx, 1 |
||
620 | pushf |
||
621 | jz .no_8 |
||
622 | |||
623 | .loop: |
||
624 | add dl, [esi+1] |
||
625 | adc dh, [esi+0] |
||
626 | |||
627 | adc dl, [esi+3] |
||
628 | adc dh, [esi+2] |
||
629 | |||
630 | adc dl, [esi+5] |
||
631 | adc dh, [esi+4] |
||
632 | |||
633 | adc dl, [esi+7] |
||
634 | adc dh, [esi+6] |
||
635 | |||
636 | adc edx, 0 |
||
637 | add esi, 8 |
||
638 | |||
639 | dec ecx |
||
640 | jnz .loop |
||
641 | |||
642 | adc edx, 0 |
||
643 | |||
644 | .no_8: |
||
645 | popf |
||
646 | jnc .no_4 |
||
647 | |||
648 | add dl, [esi+1] |
||
649 | adc dh, [esi+0] |
||
650 | |||
651 | adc dl, [esi+3] |
||
652 | adc dh, [esi+2] |
||
653 | |||
654 | adc edx, 0 |
||
655 | add esi, 4 |
||
656 | |||
657 | .no_4: |
||
658 | popf |
||
659 | jnc .no_2 |
||
660 | |||
661 | add dl, [esi+1] |
||
662 | adc dh, [esi+0] |
||
663 | |||
664 | adc edx, 0 |
||
665 | inc esi |
||
666 | inc esi |
||
667 | |||
668 | .no_2: |
||
669 | popf |
||
670 | jnc .end |
||
671 | |||
672 | add dh, [esi+0] |
||
673 | adc edx, 0 |
||
674 | .end: |
||
675 | ret |
||
676 | |||
677 | ;----------------------------------------------------------------- |
||
678 | ; |
||
679 | ; checksum_2 |
||
680 | ; |
||
681 | ; This function calculates the final ip/tcp/udp checksum for you |
||
682 | ; |
||
683 | ; IN: edx = semi-checksum |
||
684 | ; OUT: dx = checksum (in INET byte order) |
||
685 | ; |
||
686 | ;----------------------------------------------------------------- |
||
687 | align 4 |
||
688 | checksum_2: |
||
689 | |||
690 | mov ecx, edx |
||
691 | shr ecx, 16 |
||
692 | and edx, 0xffff |
||
693 | add edx, ecx |
||
694 | |||
695 | mov ecx, edx |
||
696 | shr ecx, 16 |
||
697 | add dx, cx |
||
698 | test dx, dx ; it seems that ZF is not set when CF is set :( |
||
699 | not dx |
||
700 | jnz .not_zero |
||
701 | dec dx |
||
702 | .not_zero: |
||
703 | xchg dl, dh |
||
704 | |||
3556 | hidnplayr | 705 | DEBUGF DEBUG_NETWORK_VERBOSE, "Checksum: %x\n", dx |
3545 | hidnplayr | 706 | |
707 | ret |
||
708 | |||
709 | |||
710 | |||
711 | ;---------------------------------------------------------------- |
||
712 | ; |
||
3601 | hidnplayr | 713 | ; System function to work with network devices (74) |
3545 | hidnplayr | 714 | ; |
715 | ;---------------------------------------------------------------- |
||
716 | align 4 |
||
3601 | hidnplayr | 717 | sys_network: |
3545 | hidnplayr | 718 | |
3879 | hidnplayr | 719 | cmp bl, 255 |
3545 | hidnplayr | 720 | jne @f |
721 | |||
722 | mov eax, [NET_RUNNING] |
||
3601 | hidnplayr | 723 | mov [esp+32], eax |
724 | ret |
||
3545 | hidnplayr | 725 | |
726 | @@: |
||
3600 | hidnplayr | 727 | cmp bh, NET_DEVICES_MAX ; Check if device number exists |
3545 | hidnplayr | 728 | jae .doesnt_exist |
729 | |||
730 | mov esi, ebx |
||
731 | and esi, 0x0000ff00 |
||
732 | shr esi, 6 |
||
733 | |||
734 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
||
735 | je .doesnt_exist |
||
736 | |||
737 | mov eax, [esi + NET_DRV_LIST] |
||
738 | |||
739 | and ebx, 0x000000ff |
||
740 | cmp ebx, .number |
||
741 | ja .doesnt_exist |
||
742 | jmp dword [.table + 4*ebx] |
||
743 | |||
744 | .table: |
||
745 | dd .get_type ; 0 |
||
746 | dd .get_dev_name ; 1 |
||
747 | dd .reset ; 2 |
||
748 | dd .stop ; 3 |
||
749 | dd .get_ptr ; 4 |
||
750 | dd .get_drv_name ; 5 |
||
3601 | hidnplayr | 751 | |
752 | dd .packets_tx ; 6 |
||
753 | dd .packets_rx ; 7 |
||
754 | dd .bytes_tx ; 8 |
||
755 | dd .bytes_rx ; 9 |
||
756 | dd .state ; 10 |
||
3545 | hidnplayr | 757 | .number = ($ - .table) / 4 - 1 |
758 | |||
3601 | hidnplayr | 759 | .get_type: |
3600 | hidnplayr | 760 | mov eax, [eax + NET_DEVICE.device_type] |
3601 | hidnplayr | 761 | mov [esp+32], eax |
762 | ret |
||
3545 | hidnplayr | 763 | |
3601 | hidnplayr | 764 | .get_dev_name: |
3545 | hidnplayr | 765 | mov esi, [eax + NET_DEVICE.name] |
766 | mov edi, ecx |
||
767 | |||
768 | mov ecx, 64/4 ; max length |
||
3711 | clevermous | 769 | rep movsd |
3545 | hidnplayr | 770 | |
771 | xor eax, eax |
||
3601 | hidnplayr | 772 | mov [esp+32], eax |
773 | ret |
||
3545 | hidnplayr | 774 | |
3601 | hidnplayr | 775 | .reset: |
3545 | hidnplayr | 776 | call [eax + NET_DEVICE.reset] |
3601 | hidnplayr | 777 | mov [esp+32], eax |
778 | ret |
||
3545 | hidnplayr | 779 | |
3601 | hidnplayr | 780 | .stop: |
3545 | hidnplayr | 781 | call [eax + NET_DEVICE.unload] |
3601 | hidnplayr | 782 | mov [esp+32], eax |
783 | ret |
||
3545 | hidnplayr | 784 | |
785 | |||
3601 | hidnplayr | 786 | .get_ptr: |
787 | mov [esp+32], eax |
||
788 | ret |
||
3545 | hidnplayr | 789 | |
790 | |||
3601 | hidnplayr | 791 | .get_drv_name: |
792 | xor eax, eax |
||
793 | mov [esp+32], eax |
||
794 | ret |
||
3545 | hidnplayr | 795 | |
3601 | hidnplayr | 796 | .packets_tx: |
797 | mov eax, [eax + NET_DEVICE.packets_tx] |
||
798 | mov [esp+32], eax |
||
799 | ret |
||
3545 | hidnplayr | 800 | |
3601 | hidnplayr | 801 | .packets_rx: |
802 | mov eax, [eax + NET_DEVICE.packets_rx] |
||
803 | mov [esp+32], eax |
||
804 | ret |
||
3545 | hidnplayr | 805 | |
3601 | hidnplayr | 806 | .bytes_tx: |
807 | mov ebx, dword [eax + NET_DEVICE.bytes_tx + 4] |
||
808 | mov [esp+20], ebx |
||
809 | mov eax, dword [eax + NET_DEVICE.bytes_tx] |
||
810 | mov [esp+32], eax |
||
811 | ret |
||
3545 | hidnplayr | 812 | |
3601 | hidnplayr | 813 | .bytes_rx: |
814 | mov ebx, dword [eax + NET_DEVICE.bytes_rx + 4] |
||
815 | mov [esp+20], ebx |
||
816 | mov eax, dword [eax + NET_DEVICE.bytes_rx] |
||
817 | mov [esp+32], eax |
||
818 | ret |
||
3545 | hidnplayr | 819 | |
3601 | hidnplayr | 820 | .state: |
821 | mov eax, [eax + NET_DEVICE.link_state] |
||
3545 | hidnplayr | 822 | mov [esp+32], eax |
823 | ret |
||
824 | |||
825 | |||
3601 | hidnplayr | 826 | .doesnt_exist: |
827 | mov dword[esp+32], -1 |
||
828 | ret |
||
829 | |||
830 | |||
831 | |||
3545 | hidnplayr | 832 | ;---------------------------------------------------------------- |
833 | ; |
||
834 | ; System function to work with protocols (76) |
||
835 | ; |
||
836 | ;---------------------------------------------------------------- |
||
837 | align 4 |
||
838 | sys_protocols: |
||
3600 | hidnplayr | 839 | cmp bh, NET_DEVICES_MAX ; Check if device number exists |
3545 | hidnplayr | 840 | jae .doesnt_exist |
841 | |||
842 | mov esi, ebx |
||
843 | and esi, 0x0000ff00 |
||
844 | shr esi, 6 ; now we have the device num * 4 in esi |
||
845 | cmp [esi + NET_DRV_LIST], 0 ; check if driver is running |
||
846 | je .doesnt_exist |
||
847 | |||
848 | push .return ; return address (we will be using jumps instead of calls) |
||
849 | |||
850 | mov eax, ebx ; set ax to protocol number |
||
851 | shr eax, 16 ; |
||
852 | |||
853 | cmp ax, API_ETH |
||
854 | je ETH_api |
||
855 | |||
856 | cmp ax, API_IPv4 |
||
857 | je IPv4_api |
||
858 | |||
859 | cmp ax, API_ICMP |
||
860 | je ICMP_api |
||
861 | |||
862 | cmp ax, API_UDP |
||
863 | je UDP_api |
||
864 | |||
865 | cmp ax, API_TCP |
||
866 | je TCP_api |
||
867 | |||
868 | cmp ax, API_ARP |
||
869 | je ARP_api |
||
870 | |||
871 | cmp ax, API_PPPOE |
||
872 | je PPPoE_api |
||
873 | |||
874 | cmp ax, API_IPv6 |
||
875 | je IPv6_api |
||
876 | |||
877 | add esp, 4 ; if we reached here, no function was called, so we need to balance stack |
||
878 | |||
879 | .doesnt_exist: |
||
880 | mov eax, -1 |
||
881 | |||
882 | .return: |
||
883 | mov [esp+28+4], eax ; return eax value to the program |
||
884 | ret |