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Rev | Author | Line No. | Line |
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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: 5842 $ |
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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5842 | hidnplayr | 56 | IP_PROTO_RAW = 255 |
3600 | hidnplayr | 57 | |
5842 | hidnplayr | 58 | ; IP options |
59 | IP_TOS = 1 |
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60 | IP_TTL = 2 |
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61 | IP_HDRINCL = 3 |
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62 | |||
3545 | hidnplayr | 63 | ; PPP protocol numbers |
3600 | hidnplayr | 64 | PPP_PROTO_IPv4 = 0x2100 |
65 | PPP_PROTO_IPV6 = 0x5780 |
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66 | PPP_PROTO_ETHERNET = 666 ; FIXME |
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3545 | hidnplayr | 67 | |
68 | ;Protocol family |
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69 | AF_UNSPEC = 0 |
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70 | AF_LOCAL = 1 |
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71 | AF_INET4 = 2 |
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72 | AF_INET6 = 10 |
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3600 | hidnplayr | 73 | AF_PPP = 777 ; FIXME |
3545 | hidnplayr | 74 | |
75 | ; Socket types |
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76 | SOCK_STREAM = 1 |
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77 | SOCK_DGRAM = 2 |
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78 | SOCK_RAW = 3 |
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79 | |||
5842 | hidnplayr | 80 | ; Socket level |
81 | SOL_SOCKET = 0xffff |
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82 | |||
3545 | hidnplayr | 83 | ; Socket options |
84 | SO_ACCEPTCON = 1 shl 0 |
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85 | SO_BROADCAST = 1 shl 1 |
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86 | SO_DEBUG = 1 shl 2 |
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87 | SO_DONTROUTE = 1 shl 3 |
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88 | SO_KEEPALIVE = 1 shl 4 |
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89 | SO_OOBINLINE = 1 shl 5 |
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90 | SO_REUSEADDR = 1 shl 6 |
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91 | SO_REUSEPORT = 1 shl 7 |
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92 | SO_USELOOPBACK = 1 shl 8 |
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93 | SO_BINDTODEVICE = 1 shl 9 |
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94 | |||
95 | SO_NONBLOCK = 1 shl 31 |
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96 | |||
97 | ; Socket flags for user calls |
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98 | MSG_PEEK = 0x02 |
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99 | MSG_DONTWAIT = 0x40 |
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100 | |||
101 | ; Socket States |
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3600 | hidnplayr | 102 | SS_NOFDREF = 0x0001 ; no file table ref any more |
103 | SS_ISCONNECTED = 0x0002 ; socket connected to a peer |
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104 | SS_ISCONNECTING = 0x0004 ; in process of connecting to peer |
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105 | SS_ISDISCONNECTING = 0x0008 ; in process of disconnecting |
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106 | SS_CANTSENDMORE = 0x0010 ; can't send more data to peer |
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107 | SS_CANTRCVMORE = 0x0020 ; can't receive more data from peer |
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108 | SS_RCVATMARK = 0x0040 ; at mark on input |
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109 | SS_ISABORTING = 0x0080 ; aborting fd references - close() |
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110 | SS_RESTARTSYS = 0x0100 ; restart blocked system calls |
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111 | SS_ISDISCONNECTED = 0x0800 ; socket disconnected from peer |
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3545 | hidnplayr | 112 | |
3674 | hidnplayr | 113 | SS_ASYNC = 0x1000 ; async i/o notify |
114 | SS_ISCONFIRMING = 0x2000 ; deciding to accept connection req |
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115 | SS_MORETOCOME = 0x4000 |
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3545 | hidnplayr | 116 | |
117 | SS_BLOCKED = 0x8000 |
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118 | |||
119 | |||
4959 | hidnplayr | 120 | SOCKET_MAXDATA = 4096*64 ; must be 4096*(power of 2) where 'power of 2' is at least 8 |
3600 | hidnplayr | 121 | MAX_backlog = 20 ; maximum backlog for stream sockets |
3545 | hidnplayr | 122 | |
123 | ; Error Codes |
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3674 | hidnplayr | 124 | ENOBUFS = 1 |
4025 | hidnplayr | 125 | EINPROGRESS = 2 |
3674 | hidnplayr | 126 | EOPNOTSUPP = 4 |
127 | EWOULDBLOCK = 6 |
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128 | ENOTCONN = 9 |
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129 | EALREADY = 10 |
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130 | EINVAL = 11 |
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131 | EMSGSIZE = 12 |
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132 | ENOMEM = 18 |
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133 | EADDRINUSE = 20 |
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3545 | hidnplayr | 134 | ECONNREFUSED = 61 |
135 | ECONNRESET = 52 |
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4025 | hidnplayr | 136 | EISCONN = 56 |
3545 | hidnplayr | 137 | ETIMEDOUT = 60 |
138 | ECONNABORTED = 53 |
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139 | |||
140 | ; Api protocol numbers |
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141 | API_ETH = 0 |
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142 | API_IPv4 = 1 |
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143 | API_ICMP = 2 |
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144 | API_UDP = 3 |
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145 | API_TCP = 4 |
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146 | API_ARP = 5 |
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147 | API_PPPOE = 6 |
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148 | API_IPv6 = 7 |
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149 | |||
3600 | hidnplayr | 150 | ; Network device types |
151 | NET_DEVICE_LOOPBACK = 0 |
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152 | NET_DEVICE_ETH = 1 |
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153 | NET_DEVICE_SLIP = 2 |
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154 | |||
155 | ; Network link types (link protocols) |
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5528 | hidnplayr | 156 | NET_LINK_LOOPBACK = 0 |
3600 | hidnplayr | 157 | NET_LINK_MAC = 1 ; Media access control (ethernet, isdn, ...) |
158 | NET_LINK_PPP = 2 ; Point to Point Protocol (PPPoE, ...) |
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159 | NET_LINK_IEEE802.11 = 3 ; IEEE 802.11 (WiFi) |
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160 | |||
161 | ; Hardware acceleration bits |
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4387 | hidnplayr | 162 | NET_HWACC_TCP_IPv4_IN = 1 shl 0 |
163 | NET_HWACC_TCP_IPv4_OUT = 1 shl 1 |
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3545 | hidnplayr | 164 | |
5522 | hidnplayr | 165 | ; Network frame types |
166 | NET_BUFF_LOOPBACK = 0 |
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167 | NET_BUFF_ETH = 1 |
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168 | |||
3545 | hidnplayr | 169 | struct NET_DEVICE |
170 | |||
3600 | hidnplayr | 171 | device_type dd ? ; Type field |
3545 | hidnplayr | 172 | mtu dd ? ; Maximal Transmission Unit |
173 | name dd ? ; Ptr to 0 terminated string |
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174 | |||
175 | unload dd ? ; Ptrs to driver functions |
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176 | reset dd ? ; |
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177 | transmit dd ? ; |
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178 | |||
179 | bytes_tx dq ? ; Statistics, updated by the driver |
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180 | bytes_rx dq ? ; |
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181 | packets_tx dd ? ; |
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182 | packets_rx dd ? ; |
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183 | |||
3600 | hidnplayr | 184 | link_state dd ? ; link state (0 = no link) |
3545 | hidnplayr | 185 | hwacc dd ? ; bitmask stating enabled HW accelerations (offload engines) |
186 | |||
187 | ends |
||
188 | |||
5522 | hidnplayr | 189 | struct NET_BUFF |
3545 | hidnplayr | 190 | |
5522 | hidnplayr | 191 | NextPtr dd ? ; pointer to next frame in list |
192 | PrevPtr dd ? ; pointer to previous frame in list |
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193 | device dd ? ; ptr to NET_DEVICE structure |
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194 | type dd ? ; encapsulation type: e.g. Ethernet |
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195 | length dd ? ; size of encapsulated data |
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196 | offset dd ? ; offset to actual data (24 bytes for default frame) |
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197 | data rb 0 |
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198 | |||
199 | ends |
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200 | |||
201 | |||
3545 | hidnplayr | 202 | ; Exactly as it says.. |
203 | macro pseudo_random reg { |
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204 | add reg, [esp] |
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205 | rol reg, 5 |
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206 | xor reg, [timer_ticks] |
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207 | ; add reg, [CPU_FREQ] |
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208 | imul reg, 214013 |
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209 | xor reg, 0xdeadbeef |
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210 | rol reg, 9 |
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211 | } |
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212 | |||
213 | ; Network to Hardware byte order (dword) |
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214 | macro ntohd reg { |
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215 | |||
216 | rol word reg, 8 |
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217 | rol dword reg, 16 |
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218 | rol word reg , 8 |
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219 | |||
220 | } |
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221 | |||
222 | ; Network to Hardware byte order (word) |
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223 | macro ntohw reg { |
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224 | |||
225 | rol word reg, 8 |
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226 | |||
227 | } |
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228 | |||
229 | |||
230 | include "queue.inc" |
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231 | |||
232 | include "loopback.inc" |
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233 | include "ethernet.inc" |
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234 | |||
235 | include "PPPoE.inc" |
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236 | |||
237 | include "ARP.inc" |
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238 | include "IPv4.inc" |
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239 | include "IPv6.inc" |
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240 | |||
241 | include "icmp.inc" |
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242 | include "udp.inc" |
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243 | include "tcp.inc" |
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244 | |||
245 | include "socket.inc" |
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246 | |||
247 | |||
248 | |||
3698 | hidnplayr | 249 | uglobal |
3545 | hidnplayr | 250 | align 4 |
251 | |||
5528 | hidnplayr | 252 | NET_RUNNING dd ? |
253 | NET_DRV_LIST rd NET_DEVICES_MAX |
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3545 | hidnplayr | 254 | |
5528 | hidnplayr | 255 | NET_BUFFS_FREE rd NET_BUFFERS |
256 | .current dd ? |
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257 | |||
3545 | hidnplayr | 258 | endg |
259 | |||
260 | |||
261 | ;----------------------------------------------------------------- |
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262 | ; |
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263 | ; stack_init |
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264 | ; |
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265 | ; This function calls all network init procedures |
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266 | ; |
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267 | ; IN: / |
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268 | ; OUT: / |
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269 | ; |
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270 | ;----------------------------------------------------------------- |
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271 | align 4 |
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272 | stack_init: |
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273 | |||
5528 | hidnplayr | 274 | ; allocate network buffers |
275 | stdcall kernel_alloc, NET_BUFFER_SIZE*NET_BUFFERS |
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276 | test eax, eax |
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277 | jz .fail |
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278 | |||
279 | mov edi, NET_BUFFS_FREE |
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280 | mov ecx, NET_BUFFERS |
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281 | cld |
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282 | .loop: |
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283 | stosd |
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284 | add eax, NET_BUFFER_SIZE |
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285 | dec ecx |
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286 | jnz .loop |
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287 | |||
288 | mov eax, NET_BUFFS_FREE |
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289 | stosd |
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290 | |||
3545 | hidnplayr | 291 | ; Init the network drivers list |
292 | xor eax, eax |
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293 | mov edi, NET_RUNNING |
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5524 | hidnplayr | 294 | mov ecx, (NET_DEVICES_MAX + 1) |
3711 | clevermous | 295 | rep stosd |
3545 | hidnplayr | 296 | |
3982 | hidnplayr | 297 | ETH_init |
298 | |||
3545 | hidnplayr | 299 | PPPoE_init |
300 | |||
301 | IPv4_init |
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302 | ; IPv6_init |
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303 | ICMP_init |
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304 | |||
305 | ARP_init |
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306 | UDP_init |
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307 | TCP_init |
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308 | |||
309 | SOCKET_init |
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310 | |||
3601 | hidnplayr | 311 | LOOP_init |
312 | |||
3545 | hidnplayr | 313 | mov [net_tmr_count], 0 |
5528 | hidnplayr | 314 | ret |
3545 | hidnplayr | 315 | |
5528 | hidnplayr | 316 | .fail: |
317 | DEBUGF DEBUG_NETWORK_ERROR, "Stack init failed!\n" |
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3545 | hidnplayr | 318 | ret |
319 | |||
320 | |||
321 | |||
322 | ; Wakeup every tick. |
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323 | proc stack_handler_has_work? |
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324 | |||
3711 | clevermous | 325 | mov eax, [timer_ticks] |
326 | cmp eax, [net_10ms] |
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3545 | hidnplayr | 327 | |
328 | ret |
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329 | endp |
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330 | |||
331 | |||
332 | ;----------------------------------------------------------------- |
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333 | ; |
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334 | ; stack_handler |
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335 | ; |
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336 | ; This function is called in kernel loop |
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337 | ; |
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338 | ; IN: / |
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339 | ; OUT: / |
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340 | ; |
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341 | ;----------------------------------------------------------------- |
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342 | align 4 |
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343 | stack_handler: |
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344 | |||
345 | ; Test for 10ms tick |
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346 | mov eax, [timer_ticks] |
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347 | cmp eax, [net_10ms] |
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348 | je .exit |
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349 | mov [net_10ms], eax |
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350 | |||
351 | cmp [NET_RUNNING], 0 |
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352 | je .exit |
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353 | |||
354 | test [net_10ms], 0x0f ; 160ms |
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355 | jnz .exit |
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356 | |||
357 | TCP_timer_160ms |
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358 | |||
359 | test [net_10ms], 0x3f ; 640ms |
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360 | jnz .exit |
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361 | |||
362 | ARP_decrease_entry_ttls |
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363 | IPv4_decrease_fragment_ttls |
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364 | |||
5013 | hidnplayr | 365 | xor edx, edx |
366 | mov eax, [TCP_timer1_event] |
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367 | mov ebx, [eax + EVENT.id] |
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368 | xor esi, esi |
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369 | call raise_event |
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370 | |||
3545 | hidnplayr | 371 | .exit: |
372 | ret |
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373 | |||
374 | |||
3861 | hidnplayr | 375 | align 4 |
5528 | hidnplayr | 376 | proc NET_BUFF_alloc stdcall, buffersize |
377 | cmp [buffersize], NET_BUFFER_SIZE |
||
378 | ja .too_large |
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5522 | hidnplayr | 379 | |
5528 | hidnplayr | 380 | spin_lock_irqsave |
5522 | hidnplayr | 381 | |
5528 | hidnplayr | 382 | mov eax, [NET_BUFFS_FREE.current] |
383 | cmp eax, NET_BUFFS_FREE+NET_BUFFERS*4 |
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384 | jae .out_of_mem |
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385 | mov eax, [eax] |
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386 | add [NET_BUFFS_FREE.current], 4 |
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387 | |||
388 | spin_unlock_irqrestore |
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389 | |||
5536 | hidnplayr | 390 | DEBUGF DEBUG_NETWORK_VERBOSE, "net alloc: 0x%x\n", eax |
5528 | hidnplayr | 391 | ret |
392 | |||
393 | .out_of_mem: |
||
394 | spin_unlock_irqrestore |
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395 | |||
396 | xor eax, eax |
||
397 | DEBUGF DEBUG_NETWORK_ERROR, "NET_BUFF_alloc: out of mem!\n" |
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398 | ret |
||
399 | |||
400 | .too_large: |
||
401 | xor eax, eax |
||
402 | DEBUGF DEBUG_NETWORK_ERROR, "NET_BUFF_alloc: too large!\n" |
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403 | ret |
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404 | endp |
||
405 | |||
406 | |||
5522 | hidnplayr | 407 | align 4 |
5528 | hidnplayr | 408 | proc NET_BUFF_free stdcall, buffer |
3545 | hidnplayr | 409 | |
5536 | hidnplayr | 410 | DEBUGF DEBUG_NETWORK_VERBOSE, "net free: 0x%x\n", [buffer] |
3861 | hidnplayr | 411 | |
5528 | hidnplayr | 412 | spin_lock_irqsave |
413 | |||
414 | sub [NET_BUFFS_FREE.current], 4 |
||
415 | mov eax, [NET_BUFFS_FREE.current] |
||
416 | push [buffer] |
||
417 | pop dword[eax] |
||
418 | |||
419 | spin_unlock_irqrestore |
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420 | |||
421 | ret |
||
422 | endp |
||
423 | |||
424 | |||
3545 | hidnplayr | 425 | align 4 |
426 | NET_link_changed: |
||
427 | |||
3601 | hidnplayr | 428 | DEBUGF DEBUG_NETWORK_VERBOSE, "NET_link_changed device=0x%x status=0x%x\n", ebx, [ebx + NET_DEVICE.link_state] |
3545 | hidnplayr | 429 | |
430 | align 4 |
||
431 | NET_send_event: |
||
432 | |||
3556 | hidnplayr | 433 | DEBUGF DEBUG_NETWORK_VERBOSE, "NET_send_event\n" |
3545 | hidnplayr | 434 | |
435 | ; Send event to all applications |
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436 | push edi ecx |
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437 | mov edi, SLOT_BASE |
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438 | mov ecx, [TASK_COUNT] |
||
439 | .loop: |
||
440 | add edi, 256 |
||
441 | or [edi + APPDATA.event_mask], EVENT_NETWORK2 |
||
442 | loop .loop |
||
443 | pop ecx edi |
||
444 | |||
445 | ret |
||
446 | |||
447 | |||
448 | |||
449 | ;----------------------------------------------------------------- |
||
450 | ; |
||
451 | ; NET_add_device: |
||
452 | ; |
||
453 | ; This function is called by the network drivers, |
||
454 | ; to register each running NIC to the kernel |
||
455 | ; |
||
456 | ; IN: Pointer to device structure in ebx |
||
457 | ; OUT: Device num in eax, -1 on error |
||
458 | ; |
||
459 | ;----------------------------------------------------------------- |
||
460 | align 4 |
||
461 | NET_add_device: |
||
462 | |||
3556 | hidnplayr | 463 | DEBUGF DEBUG_NETWORK_VERBOSE, "NET_Add_Device: %x\n", ebx ;;; TODO: use mutex to lock net device list |
3545 | hidnplayr | 464 | |
3600 | hidnplayr | 465 | cmp [NET_RUNNING], NET_DEVICES_MAX |
3545 | hidnplayr | 466 | jae .error |
467 | |||
468 | ;---------------------------------- |
||
469 | ; Check if device is already listed |
||
470 | mov eax, ebx |
||
3600 | hidnplayr | 471 | mov ecx, NET_DEVICES_MAX ; We need to check whole list because a device may be removed without re-organizing list |
3545 | hidnplayr | 472 | mov edi, NET_DRV_LIST |
473 | |||
3711 | clevermous | 474 | repne scasd ; See if device is already in the list |
3545 | hidnplayr | 475 | jz .error |
476 | |||
477 | ;---------------------------- |
||
478 | ; Find empty slot in the list |
||
479 | xor eax, eax |
||
3600 | hidnplayr | 480 | mov ecx, NET_DEVICES_MAX |
3545 | hidnplayr | 481 | mov edi, NET_DRV_LIST |
482 | |||
3711 | clevermous | 483 | repne scasd |
3545 | hidnplayr | 484 | jnz .error |
485 | |||
486 | sub edi, 4 |
||
487 | |||
488 | ;----------------------------- |
||
489 | ; Add device to the found slot |
||
490 | mov [edi], ebx ; add device to list |
||
491 | |||
492 | mov eax, edi ; Calculate device number in eax |
||
493 | sub eax, NET_DRV_LIST |
||
494 | shr eax, 2 |
||
495 | |||
496 | inc [NET_RUNNING] ; Indicate that one more network device is up and running |
||
497 | |||
498 | call NET_send_event |
||
499 | |||
3556 | hidnplayr | 500 | DEBUGF DEBUG_NETWORK_VERBOSE, "Device number: %u\n", eax |
3545 | hidnplayr | 501 | ret |
502 | |||
503 | .error: |
||
504 | or eax, -1 |
||
3556 | hidnplayr | 505 | DEBUGF DEBUG_NETWORK_ERROR, "Adding network device failed\n" |
3545 | hidnplayr | 506 | ret |
507 | |||
508 | |||
509 | |||
510 | ;----------------------------------------------------------------- |
||
511 | ; |
||
512 | ; NET_Remove_Device: |
||
513 | ; |
||
3601 | hidnplayr | 514 | ; This function is called by network drivers, |
3545 | hidnplayr | 515 | ; to unregister network devices from the kernel |
516 | ; |
||
517 | ; IN: Pointer to device structure in ebx |
||
518 | ; OUT: eax: -1 on error |
||
519 | ; |
||
520 | ;----------------------------------------------------------------- |
||
521 | align 4 |
||
522 | NET_remove_device: |
||
523 | |||
524 | cmp [NET_RUNNING], 0 |
||
525 | je .error |
||
526 | |||
527 | ;---------------------------- |
||
528 | ; Find the driver in the list |
||
529 | |||
530 | mov eax, ebx |
||
3600 | hidnplayr | 531 | mov ecx, NET_DEVICES_MAX |
3601 | hidnplayr | 532 | mov edi, NET_DRV_LIST |
3545 | hidnplayr | 533 | |
3711 | clevermous | 534 | repne scasd |
3545 | hidnplayr | 535 | jnz .error |
536 | |||
537 | ;------------------------ |
||
538 | ; Remove it from the list |
||
539 | |||
540 | xor eax, eax |
||
541 | mov dword [edi-4], eax |
||
3601 | hidnplayr | 542 | dec [NET_RUNNING] |
3545 | hidnplayr | 543 | |
544 | call NET_send_event |
||
545 | |||
3601 | hidnplayr | 546 | xor eax, eax |
3545 | hidnplayr | 547 | ret |
548 | |||
549 | .error: |
||
550 | or eax, -1 |
||
551 | ret |
||
552 | |||
553 | |||
554 | |||
555 | ;----------------------------------------------------------------- |
||
556 | ; |
||
557 | ; NET_ptr_to_num |
||
558 | ; |
||
559 | ; IN: ebx = ptr to device struct |
||
560 | ; OUT: edi = -1 on error, device number otherwise |
||
561 | ; |
||
562 | ;----------------------------------------------------------------- |
||
563 | align 4 |
||
564 | NET_ptr_to_num: |
||
3643 | hidnplayr | 565 | |
566 | call NET_ptr_to_num4 |
||
567 | ror edi, 2 ; If -1, stay -1 |
||
568 | ; valid device numbers have last two bits 0, so do just shr |
||
569 | |||
570 | ret |
||
571 | |||
572 | align 4 |
||
573 | NET_ptr_to_num4: ; Todo, place number in device structure so we only need to verify? |
||
574 | |||
5522 | hidnplayr | 575 | test ebx, ebx |
576 | jz .fail |
||
577 | |||
3545 | hidnplayr | 578 | push ecx |
3600 | hidnplayr | 579 | mov ecx, NET_DEVICES_MAX |
3545 | hidnplayr | 580 | mov edi, NET_DRV_LIST |
581 | .loop: |
||
582 | cmp ebx, [edi] |
||
3643 | hidnplayr | 583 | je .found |
3545 | hidnplayr | 584 | add edi, 4 |
585 | dec ecx |
||
586 | jnz .loop |
||
587 | |||
5522 | hidnplayr | 588 | pop ecx |
589 | .fail: |
||
3545 | hidnplayr | 590 | or edi, -1 |
591 | ret |
||
592 | |||
593 | .found: |
||
594 | sub edi, NET_DRV_LIST |
||
595 | pop ecx |
||
596 | ret |
||
597 | |||
598 | ;----------------------------------------------------------------- |
||
599 | ; |
||
600 | ; checksum_1 |
||
601 | ; |
||
602 | ; This is the first of two functions needed to calculate a checksum. |
||
603 | ; |
||
604 | ; IN: edx = start offset for semi-checksum |
||
605 | ; esi = pointer to data |
||
606 | ; ecx = data size |
||
607 | ; OUT: edx = semi-checksum |
||
608 | ; |
||
609 | ; |
||
610 | ; Code was optimized by diamond |
||
611 | ; |
||
612 | ;----------------------------------------------------------------- |
||
613 | align 4 |
||
614 | checksum_1: |
||
615 | |||
616 | shr ecx, 1 |
||
617 | pushf |
||
618 | jz .no_2 |
||
619 | |||
620 | shr ecx, 1 |
||
621 | pushf |
||
622 | jz .no_4 |
||
623 | |||
624 | shr ecx, 1 |
||
625 | pushf |
||
626 | jz .no_8 |
||
627 | |||
628 | .loop: |
||
629 | add dl, [esi+1] |
||
630 | adc dh, [esi+0] |
||
631 | |||
632 | adc dl, [esi+3] |
||
633 | adc dh, [esi+2] |
||
634 | |||
635 | adc dl, [esi+5] |
||
636 | adc dh, [esi+4] |
||
637 | |||
638 | adc dl, [esi+7] |
||
639 | adc dh, [esi+6] |
||
640 | |||
641 | adc edx, 0 |
||
642 | add esi, 8 |
||
643 | |||
644 | dec ecx |
||
645 | jnz .loop |
||
646 | |||
647 | adc edx, 0 |
||
648 | |||
649 | .no_8: |
||
650 | popf |
||
651 | jnc .no_4 |
||
652 | |||
653 | add dl, [esi+1] |
||
654 | adc dh, [esi+0] |
||
655 | |||
656 | adc dl, [esi+3] |
||
657 | adc dh, [esi+2] |
||
658 | |||
659 | adc edx, 0 |
||
660 | add esi, 4 |
||
661 | |||
662 | .no_4: |
||
663 | popf |
||
664 | jnc .no_2 |
||
665 | |||
666 | add dl, [esi+1] |
||
667 | adc dh, [esi+0] |
||
668 | |||
669 | adc edx, 0 |
||
670 | inc esi |
||
671 | inc esi |
||
672 | |||
673 | .no_2: |
||
674 | popf |
||
675 | jnc .end |
||
676 | |||
677 | add dh, [esi+0] |
||
678 | adc edx, 0 |
||
679 | .end: |
||
680 | ret |
||
681 | |||
682 | ;----------------------------------------------------------------- |
||
683 | ; |
||
684 | ; checksum_2 |
||
685 | ; |
||
686 | ; This function calculates the final ip/tcp/udp checksum for you |
||
687 | ; |
||
688 | ; IN: edx = semi-checksum |
||
689 | ; OUT: dx = checksum (in INET byte order) |
||
690 | ; |
||
691 | ;----------------------------------------------------------------- |
||
692 | align 4 |
||
693 | checksum_2: |
||
694 | |||
695 | mov ecx, edx |
||
696 | shr ecx, 16 |
||
697 | and edx, 0xffff |
||
698 | add edx, ecx |
||
699 | |||
700 | mov ecx, edx |
||
701 | shr ecx, 16 |
||
702 | add dx, cx |
||
703 | test dx, dx ; it seems that ZF is not set when CF is set :( |
||
704 | not dx |
||
705 | jnz .not_zero |
||
706 | dec dx |
||
707 | .not_zero: |
||
708 | xchg dl, dh |
||
709 | |||
3556 | hidnplayr | 710 | DEBUGF DEBUG_NETWORK_VERBOSE, "Checksum: %x\n", dx |
3545 | hidnplayr | 711 | |
712 | ret |
||
713 | |||
714 | |||
715 | |||
716 | ;---------------------------------------------------------------- |
||
717 | ; |
||
3601 | hidnplayr | 718 | ; System function to work with network devices (74) |
3545 | hidnplayr | 719 | ; |
720 | ;---------------------------------------------------------------- |
||
721 | align 4 |
||
3601 | hidnplayr | 722 | sys_network: |
3545 | hidnplayr | 723 | |
3879 | hidnplayr | 724 | cmp bl, 255 |
3545 | hidnplayr | 725 | jne @f |
726 | |||
727 | mov eax, [NET_RUNNING] |
||
3601 | hidnplayr | 728 | mov [esp+32], eax |
729 | ret |
||
3545 | hidnplayr | 730 | |
731 | @@: |
||
3600 | hidnplayr | 732 | cmp bh, NET_DEVICES_MAX ; Check if device number exists |
3545 | hidnplayr | 733 | jae .doesnt_exist |
734 | |||
735 | mov esi, ebx |
||
736 | and esi, 0x0000ff00 |
||
737 | shr esi, 6 |
||
738 | |||
739 | cmp dword [esi + NET_DRV_LIST], 0 ; check if driver is running |
||
740 | je .doesnt_exist |
||
741 | |||
742 | mov eax, [esi + NET_DRV_LIST] |
||
743 | |||
744 | and ebx, 0x000000ff |
||
745 | cmp ebx, .number |
||
746 | ja .doesnt_exist |
||
747 | jmp dword [.table + 4*ebx] |
||
748 | |||
749 | .table: |
||
750 | dd .get_type ; 0 |
||
751 | dd .get_dev_name ; 1 |
||
752 | dd .reset ; 2 |
||
753 | dd .stop ; 3 |
||
754 | dd .get_ptr ; 4 |
||
755 | dd .get_drv_name ; 5 |
||
3601 | hidnplayr | 756 | |
757 | dd .packets_tx ; 6 |
||
758 | dd .packets_rx ; 7 |
||
759 | dd .bytes_tx ; 8 |
||
760 | dd .bytes_rx ; 9 |
||
761 | dd .state ; 10 |
||
3545 | hidnplayr | 762 | .number = ($ - .table) / 4 - 1 |
763 | |||
3601 | hidnplayr | 764 | .get_type: |
3600 | hidnplayr | 765 | mov eax, [eax + NET_DEVICE.device_type] |
3601 | hidnplayr | 766 | mov [esp+32], eax |
767 | ret |
||
3545 | hidnplayr | 768 | |
3601 | hidnplayr | 769 | .get_dev_name: |
3545 | hidnplayr | 770 | mov esi, [eax + NET_DEVICE.name] |
771 | mov edi, ecx |
||
772 | |||
773 | mov ecx, 64/4 ; max length |
||
3711 | clevermous | 774 | rep movsd |
3545 | hidnplayr | 775 | |
776 | xor eax, eax |
||
3601 | hidnplayr | 777 | mov [esp+32], eax |
778 | ret |
||
3545 | hidnplayr | 779 | |
3601 | hidnplayr | 780 | .reset: |
3545 | hidnplayr | 781 | call [eax + NET_DEVICE.reset] |
3601 | hidnplayr | 782 | mov [esp+32], eax |
783 | ret |
||
3545 | hidnplayr | 784 | |
3601 | hidnplayr | 785 | .stop: |
3545 | hidnplayr | 786 | call [eax + NET_DEVICE.unload] |
3601 | hidnplayr | 787 | mov [esp+32], eax |
788 | ret |
||
3545 | hidnplayr | 789 | |
790 | |||
3601 | hidnplayr | 791 | .get_ptr: |
792 | mov [esp+32], eax |
||
793 | ret |
||
3545 | hidnplayr | 794 | |
795 | |||
3601 | hidnplayr | 796 | .get_drv_name: |
797 | xor eax, eax |
||
798 | mov [esp+32], eax |
||
799 | ret |
||
3545 | hidnplayr | 800 | |
3601 | hidnplayr | 801 | .packets_tx: |
802 | mov eax, [eax + NET_DEVICE.packets_tx] |
||
803 | mov [esp+32], eax |
||
804 | ret |
||
3545 | hidnplayr | 805 | |
3601 | hidnplayr | 806 | .packets_rx: |
807 | mov eax, [eax + NET_DEVICE.packets_rx] |
||
808 | mov [esp+32], eax |
||
809 | ret |
||
3545 | hidnplayr | 810 | |
3601 | hidnplayr | 811 | .bytes_tx: |
812 | mov ebx, dword [eax + NET_DEVICE.bytes_tx + 4] |
||
813 | mov [esp+20], ebx |
||
814 | mov eax, dword [eax + NET_DEVICE.bytes_tx] |
||
815 | mov [esp+32], eax |
||
816 | ret |
||
3545 | hidnplayr | 817 | |
3601 | hidnplayr | 818 | .bytes_rx: |
819 | mov ebx, dword [eax + NET_DEVICE.bytes_rx + 4] |
||
820 | mov [esp+20], ebx |
||
821 | mov eax, dword [eax + NET_DEVICE.bytes_rx] |
||
822 | mov [esp+32], eax |
||
823 | ret |
||
3545 | hidnplayr | 824 | |
3601 | hidnplayr | 825 | .state: |
826 | mov eax, [eax + NET_DEVICE.link_state] |
||
3545 | hidnplayr | 827 | mov [esp+32], eax |
828 | ret |
||
829 | |||
830 | |||
3601 | hidnplayr | 831 | .doesnt_exist: |
832 | mov dword[esp+32], -1 |
||
833 | ret |
||
834 | |||
835 | |||
836 | |||
3545 | hidnplayr | 837 | ;---------------------------------------------------------------- |
838 | ; |
||
839 | ; System function to work with protocols (76) |
||
840 | ; |
||
841 | ;---------------------------------------------------------------- |
||
842 | align 4 |
||
843 | sys_protocols: |
||
3600 | hidnplayr | 844 | cmp bh, NET_DEVICES_MAX ; Check if device number exists |
3545 | hidnplayr | 845 | jae .doesnt_exist |
846 | |||
847 | mov esi, ebx |
||
848 | and esi, 0x0000ff00 |
||
849 | shr esi, 6 ; now we have the device num * 4 in esi |
||
850 | cmp [esi + NET_DRV_LIST], 0 ; check if driver is running |
||
851 | je .doesnt_exist |
||
852 | |||
853 | push .return ; return address (we will be using jumps instead of calls) |
||
854 | |||
855 | mov eax, ebx ; set ax to protocol number |
||
856 | shr eax, 16 ; |
||
857 | |||
858 | cmp ax, API_ETH |
||
859 | je ETH_api |
||
860 | |||
861 | cmp ax, API_IPv4 |
||
862 | je IPv4_api |
||
863 | |||
864 | cmp ax, API_ICMP |
||
865 | je ICMP_api |
||
866 | |||
867 | cmp ax, API_UDP |
||
868 | je UDP_api |
||
869 | |||
870 | cmp ax, API_TCP |
||
871 | je TCP_api |
||
872 | |||
873 | cmp ax, API_ARP |
||
874 | je ARP_api |
||
875 | |||
876 | cmp ax, API_PPPOE |
||
877 | je PPPoE_api |
||
878 | |||
879 | cmp ax, API_IPv6 |
||
880 | je IPv6_api |
||
881 | |||
882 | add esp, 4 ; if we reached here, no function was called, so we need to balance stack |
||
883 | |||
884 | .doesnt_exist: |
||
885 | mov eax, -1 |
||
886 | |||
887 | .return: |
||
888 | mov [esp+28+4], eax ; return eax value to the program |
||
889 | ret |