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Rev | Author | Line No. | Line |
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1 | ha | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; STACK.INC ;; |
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4 | ;; ;; |
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5 | ;; TCP/IP stack for Menuet OS ;; |
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6 | ;; ;; |
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7 | ;; Version 0.7 4th July 2004 ;; |
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8 | ;; ;; |
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9 | ;; Copyright 2002 Mike Hibbett, mikeh@oceanfree.net ;; |
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10 | ;; ;; |
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11 | ;; See file COPYING for details ;; |
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12 | ;; ;; |
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13 | ;; Version 0.7 ;; |
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14 | ;; Added a timer per socket to allow delays when rx window ;; |
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15 | ;; gets below 1KB ;; |
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16 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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17 | |||
18 | |||
261 | hidnplayr | 19 | |
1 | ha | 20 | ;******************************************************************* |
21 | ; Interface |
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22 | ; The interfaces defined in ETHERNET.INC plus: |
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23 | ; stack_init |
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24 | ; stack_handler |
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25 | ; app_stack_handler |
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26 | ; app_socket_handler |
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27 | ; checksum |
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28 | ; |
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29 | ;******************************************************************* |
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30 | |||
261 | hidnplayr | 31 | uglobal |
32 | StackCounters: |
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33 | dumped_rx_count: dd 0 |
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34 | arp_tx_count: dd 0 |
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35 | arp_rx_count: dd 0 |
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36 | ip_rx_count: dd 0 |
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37 | ip_tx_count: dd 0 |
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38 | endg |
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1 | ha | 39 | |
261 | hidnplayr | 40 | ; socket buffers |
41 | SOCKETBUFFSIZE equ 4096 ; state + config + buffer. |
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42 | SOCKETHEADERSIZE equ 76 ; thus 4096 - SOCKETHEADERSIZE bytes data |
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1 | ha | 43 | |
261 | hidnplayr | 44 | NUM_SOCKETS equ 16 ; Number of open sockets supported. Was 20 |
1 | ha | 45 | |
261 | hidnplayr | 46 | ; IPBUFF status values |
1 | ha | 47 | BUFF_EMPTY equ 0 |
48 | BUFF_RX_FULL equ 1 |
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49 | BUFF_ALLOCATED equ 2 |
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50 | BUFF_TX_FULL equ 3 |
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51 | |||
52 | NUM_IPBUFFERS equ 20 ; buffers allocated for TX/RX |
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53 | |||
54 | NUMQUEUES equ 4 |
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55 | EMPTY_QUEUE equ 0 |
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56 | IPIN_QUEUE equ 1 |
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57 | IPOUT_QUEUE equ 2 |
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58 | NET1OUT_QUEUE equ 3 |
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59 | |||
60 | NO_BUFFER equ 0xFFFF |
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61 | IPBUFFSIZE equ 1500 ; MTU of an ethernet packet |
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62 | NUMQUEUEENTRIES equ NUM_IPBUFFERS |
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63 | NUMRESENDENTRIES equ 18 ; Buffers for TCP resend packets |
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64 | |||
65 | ; These are the 0x40 function codes for application access to the stack |
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66 | STACK_DRIVER_STATUS equ 52 |
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67 | SOCKET_INTERFACE equ 53 |
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68 | |||
69 | |||
70 | ; 128KB allocated for the stack and network driver buffers and other |
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71 | ; data requirements |
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72 | stack_data_start equ 0x700000 |
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73 | eth_data_start equ 0x700000 |
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74 | stack_data equ 0x704000 |
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75 | stack_data_end equ 0x71ffff |
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76 | |||
77 | ; 32 bit word |
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78 | stack_config equ stack_data |
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261 | hidnplayr | 79 | |
1 | ha | 80 | ; 32 bit word - IP Address in network format |
81 | stack_ip equ stack_data + 4 |
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261 | hidnplayr | 82 | |
1 | ha | 83 | ; 1 byte. 0 == inactive, 1 = active |
84 | ethernet_active equ stack_data + 9 |
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261 | hidnplayr | 85 | |
86 | |||
87 | ; TODO :: empty memory area |
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88 | |||
1 | ha | 89 | ; Address of selected socket |
90 | sktAddr equ stack_data + 32 |
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91 | ; Parameter to checksum routine - data ptr |
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92 | checkAdd1 equ stack_data + 36 |
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93 | ; Parameter to checksum routine - 2nd data ptr |
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94 | checkAdd2 equ stack_data + 40 |
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95 | ; Parameter to checksum routine - data size |
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96 | checkSize1 equ stack_data + 44 |
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97 | ; Parameter to checksum routine - 2nd data size |
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98 | checkSize2 equ stack_data + 46 |
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99 | ; result of checksum routine |
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100 | checkResult equ stack_data + 48 |
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101 | |||
102 | ; holds the TCP/UDP pseudo header. SA|DA|0|prot|UDP len| |
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103 | pseudoHeader equ stack_data + 50 |
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104 | |||
105 | ; receive and transmit IP buffer allocation |
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106 | sockets equ stack_data + 62 |
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107 | Next_free2 equ sockets + (SOCKETBUFFSIZE * NUM_SOCKETS) |
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108 | ; 1560 byte buffer for rx / tx ethernet packets |
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109 | Ether_buffer equ Next_free2 |
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261 | hidnplayr | 110 | Next_free3 equ Ether_buffer + 1518 |
111 | last_1sTick equ Next_free3 |
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1 | ha | 112 | IPbuffs equ Next_free3 + 1 |
113 | queues equ IPbuffs + ( NUM_IPBUFFERS * IPBUFFSIZE ) |
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114 | queueList equ queues + (2 * NUMQUEUES) |
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115 | last_1hsTick equ queueList + ( 2 * NUMQUEUEENTRIES ) |
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116 | |||
117 | ;resendQ equ queueList + ( 2 * NUMQUEUEENTRIES ) |
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118 | ;resendBuffer equ resendQ + ( 4 * NUMRESENDENTRIES ) ; for TCP |
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119 | ; equ resendBuffer + ( IPBUFFSIZE * NUMRESENDENTRIES ) |
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120 | |||
121 | |||
122 | |||
123 | resendQ equ 0x770000 |
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124 | resendBuffer equ resendQ + ( 4 * NUMRESENDENTRIES ) ; for TCP |
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125 | |||
126 | |||
261 | hidnplayr | 127 | ; simple macro for memory set operation |
128 | macro _memset_dw adr,value,amount |
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129 | { |
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130 | mov edi, adr |
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131 | mov ecx, amount |
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132 | if value = 0 |
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133 | xor eax, eax |
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134 | else |
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135 | mov eax, value |
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136 | end if |
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137 | cld |
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138 | rep stosd |
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139 | } |
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140 | |||
141 | |||
142 | ; Below, the main network layer source code is included |
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143 | ; |
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144 | include "queue.inc" |
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145 | include "eth_drv/ethernet.inc" |
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146 | include "ip.inc" |
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147 | include "icmp.inc" |
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148 | include "tcp.inc" |
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149 | include "udp.inc" |
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150 | include "socket.inc" |
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151 | |||
1 | ha | 152 | ;*************************************************************************** |
153 | ; Function |
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154 | ; stack_init |
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155 | ; |
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156 | ; Description |
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157 | ; Clear all allocated memory to zero. This ensures that |
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158 | ; on startup, the stack is inactive, and consumes no resources |
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159 | ; This is a kernel function, called prior to the OS main loop |
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160 | ; in set_variables |
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161 | ; |
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162 | ;*************************************************************************** |
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261 | hidnplayr | 163 | |
1 | ha | 164 | stack_init: |
261 | hidnplayr | 165 | ; Init two address spaces with default values |
166 | _memset_dw stack_data_start, 0, 0x20000/4 |
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167 | _memset_dw resendQ, 0xFFFFFFFF, NUMRESENDENTRIES |
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1 | ha | 168 | |
261 | hidnplayr | 169 | ; Queries initialization |
170 | call queueInit |
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1 | ha | 171 | |
261 | hidnplayr | 172 | ; The following block sets up the 1s timer |
173 | mov al, 0x0 |
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174 | out 0x70, al |
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175 | in al, 0x71 |
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176 | mov [last_1sTick], al |
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177 | ret |
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1 | ha | 178 | |
179 | |||
180 | |||
181 | ;*************************************************************************** |
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182 | ; Function |
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183 | ; stack_handler |
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184 | ; |
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185 | ; Description |
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186 | ; The kernel loop routine for the stack |
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187 | ; This is a kernel function, called in the main loop |
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188 | ; |
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189 | ;*************************************************************************** |
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190 | stack_handler: |
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191 | |||
192 | call ethernet_driver |
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193 | call ip_rx |
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194 | |||
195 | |||
196 | ; Test for 10ms tick, call tcp timer |
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197 | mov eax, [timer_ticks] ;[0xfdf0] |
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198 | cmp eax, [last_1hsTick] |
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199 | je sh_001 |
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200 | |||
201 | mov [last_1hsTick], eax |
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202 | call tcp_tx_handler |
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203 | |||
204 | sh_001: |
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205 | |||
206 | ; Test for 1 second event, call 1s timer functions |
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261 | hidnplayr | 207 | mov al, 0x0 ;second |
208 | out 0x70, al |
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209 | in al, 0x71 |
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1 | ha | 210 | cmp al, [last_1sTick] |
211 | je sh_exit |
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212 | |||
213 | mov [last_1sTick], al |
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214 | |||
261 | hidnplayr | 215 | stdcall arp_table_manager, ARP_TABLE_TIMER, 0, 0 |
1 | ha | 216 | call tcp_tcb_handler |
217 | |||
218 | sh_exit: |
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219 | ret |
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220 | |||
261 | hidnplayr | 221 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
222 | ;; Checksum [by Johnny_B] |
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223 | ;; IN: |
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224 | ;; buf_ptr=POINTER to buffer |
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225 | ;; buf_size=SIZE of buffer |
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226 | ;; OUT: |
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227 | ;; AX=16-bit checksum |
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228 | ;; Saves all used registers |
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229 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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230 | proc checksum_jb stdcall uses ebx esi ecx,\ |
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231 | buf_ptr:DWORD, buf_size:DWORD |
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1 | ha | 232 | |
261 | hidnplayr | 233 | xor eax, eax |
234 | xor ebx, ebx ;accumulator |
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235 | mov esi, dword[buf_ptr] |
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236 | mov ecx, dword[buf_size] |
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237 | shr ecx, 1 ; ecx=ecx/2 |
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238 | jnc @f ; if CF==0 then size is even number |
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239 | mov bh, byte[esi + ecx*2] |
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240 | @@: |
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241 | cld |
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1 | ha | 242 | |
261 | hidnplayr | 243 | .loop: |
244 | lodsw ;eax=word[esi],esi=esi+2 |
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245 | xchg ah,al ;cause must be a net byte-order |
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246 | add ebx, eax |
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247 | loop .loop |
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1 | ha | 248 | |
261 | hidnplayr | 249 | mov eax, ebx |
250 | shr eax, 16 |
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251 | add ax, bx |
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252 | not ax |
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1 | ha | 253 | |
254 | ret |
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261 | hidnplayr | 255 | endp |
1 | ha | 256 | |
257 | ;*************************************************************************** |
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258 | ; Function |
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259 | ; checksum |
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260 | ; |
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261 | ; Description |
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262 | ; checkAdd1,checkAdd2, checkSize1, checkSize2, checkResult |
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263 | ; Dont break anything; Most registers are used by the caller |
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264 | ; This code is derived from the 'C' source, cksum.c, in the book |
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265 | ; Internetworking with TCP/IP Volume II by D.E. Comer |
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266 | ; |
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267 | ;*************************************************************************** |
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261 | hidnplayr | 268 | |
269 | |||
1 | ha | 270 | checksum: |
271 | pusha |
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272 | |||
273 | xor edx, edx ; edx is the accumulative checksum |
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274 | xor ebx, ebx |
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275 | mov cx, [checkSize1] |
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276 | shr cx, 1 |
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277 | jz cs1_1 |
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278 | |||
279 | mov eax, [checkAdd1] |
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280 | |||
281 | cs1: |
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282 | mov bh, [eax] |
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283 | mov bl, [eax + 1] |
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284 | |||
285 | add eax, 2 |
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286 | add edx, ebx |
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287 | |||
288 | loopw cs1 |
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289 | |||
290 | cs1_1: |
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291 | and word [checkSize1], 0x01 |
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292 | jz cs_test2 |
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293 | |||
294 | mov bh, [eax] |
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295 | xor bl, bl |
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296 | |||
297 | add edx, ebx |
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298 | |||
299 | cs_test2: |
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300 | mov cx, [checkSize2] |
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301 | cmp cx, 0 |
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302 | jz cs_exit ; Finished if no 2nd buffer |
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303 | |||
304 | shr cx, 1 |
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305 | jz cs2_1 |
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306 | |||
307 | mov eax, [checkAdd2] |
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308 | |||
309 | cs2: |
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310 | mov bh, [eax] |
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311 | mov bl, [eax + 1] |
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312 | |||
313 | add eax, 2 |
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314 | add edx, ebx |
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315 | |||
316 | loopw cs2 |
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317 | |||
318 | cs2_1: |
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319 | and word [checkSize2], 0x01 |
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320 | jz cs_exit |
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321 | |||
322 | mov bh, [eax] |
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323 | xor bl, bl |
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324 | |||
325 | add edx, ebx |
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326 | |||
327 | cs_exit: |
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328 | mov ebx, edx |
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329 | |||
330 | shr ebx, 16 |
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331 | and edx, 0xffff |
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332 | add edx, ebx |
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333 | mov eax, edx |
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334 | shr eax, 16 |
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335 | add edx, eax |
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336 | not dx |
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337 | |||
338 | mov [checkResult], dx |
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339 | popa |
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340 | ret |
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341 | |||
342 | |||
343 | |||
344 | |||
345 | ;*************************************************************************** |
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346 | ; Function |
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347 | ; app_stack_handler |
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348 | ; |
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349 | ; Description |
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261 | hidnplayr | 350 | ; This is an application service, called by int 0x40, function 52 |
1 | ha | 351 | ; It provides application access to the network interface layer |
352 | ; |
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353 | ;*************************************************************************** |
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354 | app_stack_handler: |
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355 | cmp eax, 0 |
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356 | jnz not0 |
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261 | hidnplayr | 357 | ; Read the configuration word |
1 | ha | 358 | mov eax, [stack_config] |
359 | ret |
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360 | |||
361 | not0: |
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362 | cmp eax, 1 |
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363 | jnz not1 |
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364 | ; read the IP address |
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365 | |||
366 | mov eax, [stack_ip] |
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367 | ret |
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368 | |||
369 | not1: |
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370 | cmp eax, 2 |
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371 | jnz not2 |
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372 | |||
373 | ; write the configuration word |
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374 | mov [stack_config], ebx |
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375 | |||
376 | ; |
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377 | ; If ethernet now enabled, probe for the card, reset it and empty |
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378 | ; the packet buffer |
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379 | ; If all successfull, enable the card. |
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380 | ; If ethernet now disabled, set it as disabled. Should really |
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381 | ; empty the tcpip data area too. |
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382 | |||
383 | ; ethernet interface is '3' in ls 7 bits |
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384 | and bl, 0x7f |
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385 | cmp bl, 3 |
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386 | |||
387 | je ash_eth_enable |
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388 | ; Ethernet isn't enabled, so make sure that the card is disabled |
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389 | mov [ethernet_active], byte 0 |
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390 | |||
391 | ret |
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392 | |||
393 | ash_eth_enable: |
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394 | ; Probe for the card. This will reset it and enable the interface |
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395 | ; if found |
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396 | call eth_probe |
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397 | cmp eax, 0 |
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398 | je ash_eth_done ; Abort if no hardware found |
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399 | |||
400 | mov [ethernet_active], byte 1 |
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401 | |||
402 | ash_eth_done: |
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403 | ret |
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404 | |||
405 | not2: |
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406 | cmp eax, 3 |
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407 | jnz not3 |
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408 | ; write the IP Address |
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409 | mov [stack_ip], ebx |
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410 | ret |
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411 | |||
261 | hidnplayr | 412 | ;old functions was deleted |
413 | |||
1 | ha | 414 | not3: |
415 | cmp eax, 6 |
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416 | jnz not6 |
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417 | |||
418 | ; Insert an IP packet into the stacks received packet queue |
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419 | call stack_insert_packet |
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420 | ret |
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421 | |||
422 | not6: |
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423 | cmp eax, 7 |
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424 | jnz not7 |
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425 | |||
426 | ; Test for any packets queued for transmission over the network |
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427 | |||
428 | not7: |
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429 | cmp eax, 8 |
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430 | jnz not8 |
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431 | |||
432 | call stack_get_packet |
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433 | ; Extract a packet queued for transmission by the network |
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434 | ret |
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435 | |||
436 | not8: |
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437 | cmp eax, 9 |
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438 | jnz not9 |
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439 | |||
440 | ; read the gateway IP address |
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441 | |||
442 | mov eax, [gateway_ip] |
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443 | ret |
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444 | |||
445 | not9: |
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446 | cmp eax, 10 |
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447 | jnz not10 |
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448 | |||
449 | ; read the subnet mask |
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450 | |||
451 | mov eax, [subnet_mask] |
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452 | ret |
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453 | |||
454 | not10: |
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455 | cmp eax, 11 |
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456 | jnz not11 |
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457 | |||
458 | ; write the gateway IP Address |
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459 | mov [gateway_ip], ebx |
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460 | |||
461 | ret |
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462 | |||
463 | not11: |
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464 | cmp eax, 12 |
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465 | jnz not12 |
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466 | |||
467 | ; write the subnet mask |
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468 | mov [subnet_mask], ebx |
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469 | |||
470 | |||
471 | not12: |
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472 | cmp eax, 13 |
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473 | jnz not13 |
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474 | |||
475 | ; read the dns |
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476 | |||
477 | mov eax, [dns_ip] |
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478 | ret |
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479 | |||
480 | not13: |
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481 | cmp eax, 14 |
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261 | hidnplayr | 482 | jnz not14 |
1 | ha | 483 | |
484 | ; write the dns IP Address |
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485 | mov [dns_ip], ebx |
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486 | |||
261 | hidnplayr | 487 | ret |
488 | |||
489 | ; |
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490 | not14: |
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491 | cmp eax, 15 |
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492 | jnz not15 |
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493 | |||
494 | ; in ebx we need 4 to read the last 2 bytes |
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495 | cmp ebx, dword 4 |
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496 | je read |
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497 | |||
498 | ; or we need 0 to read the first 4 bytes |
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499 | cmp ebx, dword 0 |
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500 | jnz param_error |
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501 | |||
502 | ; read MAC, returned (in mirrored byte order) in eax |
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503 | read: |
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504 | mov eax, [node_addr + ebx] |
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505 | jmp @f |
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506 | |||
507 | param_error: |
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508 | mov eax, -1 ; params not accepted |
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509 | @@: |
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510 | ret |
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511 | |||
512 | |||
513 | ; 0 -> arp_probe |
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514 | ; 1 -> arp_announce |
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515 | ; 2 -> arp_responce (not supported yet) |
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516 | |||
517 | not15: ; ARP stuff |
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518 | cmp eax, 16 |
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519 | jnz not16 |
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520 | |||
521 | cmp ebx, 0 |
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522 | je a_probe |
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523 | |||
524 | cmp ebx, 1 |
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525 | je a_ann ; arp announce |
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526 | |||
527 | ; cmp ebx,2 |
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528 | ; jne a_resp ; arp response |
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529 | |||
530 | jmp param15_error |
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531 | |||
532 | |||
533 | ; arp probe, sender IP must be set to 0.0.0.0, target IP is set to address being probed |
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534 | ; ecx: pointer to target MAC, MAC should set to 0 by application |
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535 | ; edx: target IP |
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536 | a_probe: |
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537 | push dword [stack_ip] |
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538 | |||
539 | mov edx, [stack_ip] |
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540 | mov [stack_ip], dword 0 |
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541 | mov esi, ecx ; pointer to target MAC address |
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542 | call arp_request |
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543 | |||
544 | pop dword [stack_ip] |
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545 | jmp @f |
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546 | |||
547 | ; arp announce, sender IP must be set to target IP |
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548 | ; ecx: pointer to target MAC |
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549 | a_ann: |
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550 | mov edx, [stack_ip] |
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551 | mov esi, ecx ; pointer to target MAC address |
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552 | call arp_request |
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553 | jmp @f |
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554 | |||
555 | param15_error: |
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556 | mov eax, -1 |
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557 | |||
558 | @@: |
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559 | ret |
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560 | ; |
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561 | ; modified by [smb] |
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562 | |||
563 | ; |
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564 | ; ARPTable manager interface |
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565 | not16: |
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566 | cmp eax, 17 |
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567 | jnz stack_driver_end |
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568 | |||
569 | ;see "proc arp_table_manager" for more details |
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570 | stdcall arp_table_manager,ebx,ecx,edx ;Opcode,Index,Extra |
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571 | |||
1 | ha | 572 | ret |
261 | hidnplayr | 573 | ; |
1 | ha | 574 | |
575 | stack_driver_end: |
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261 | hidnplayr | 576 | ret |
1 | ha | 577 | |
578 | |||
579 | |||
580 | ;*************************************************************************** |
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581 | ; Function |
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582 | ; app_socket_handler |
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583 | ; |
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584 | ; Description |
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261 | hidnplayr | 585 | ; This is an application service, called by int 0x40, function 53 |
1 | ha | 586 | ; It provides application access to stack socket services |
587 | ; such as opening sockets |
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588 | ; |
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589 | ;*************************************************************************** |
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590 | app_socket_handler: |
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591 | cmp eax, 0 |
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592 | jnz nots0 |
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593 | |||
594 | call socket_open |
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595 | ret |
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596 | |||
597 | nots0: |
||
598 | cmp eax, 1 |
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599 | jnz nots1 |
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600 | |||
601 | call socket_close |
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602 | ret |
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603 | |||
604 | nots1: |
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605 | cmp eax, 2 |
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606 | jnz nots2 |
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607 | |||
608 | call socket_poll |
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609 | ret |
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610 | |||
611 | nots2: |
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612 | cmp eax, 3 |
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613 | jnz nots3 |
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614 | |||
615 | call socket_read |
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616 | ret |
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617 | |||
618 | nots3: |
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619 | cmp eax, 4 |
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620 | jnz nots4 |
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621 | |||
622 | call socket_write |
||
623 | ret |
||
624 | |||
625 | nots4: |
||
626 | cmp eax, 5 |
||
627 | jnz nots5 |
||
628 | |||
629 | call socket_open_tcp |
||
630 | ret |
||
631 | |||
632 | nots5: |
||
633 | cmp eax, 6 |
||
634 | jnz nots6 |
||
635 | |||
636 | call socket_status |
||
637 | ret |
||
638 | |||
639 | nots6: |
||
640 | cmp eax, 7 |
||
641 | jnz nots7 |
||
642 | |||
643 | call socket_write_tcp |
||
644 | ret |
||
645 | |||
646 | nots7: |
||
647 | cmp eax, 8 |
||
648 | jnz nots8 |
||
649 | |||
650 | call socket_close_tcp |
||
651 | ret |
||
652 | |||
653 | nots8: |
||
654 | cmp eax, 9 |
||
655 | jnz nots9 |
||
656 | |||
657 | call is_localport_unused |
||
658 | ret |
||
659 | |||
660 | nots9: |
||
661 | cmp eax, 254 |
||
662 | jnz notdump |
||
663 | |||
664 | ret |
||
665 | |||
666 | notdump: |
||
667 | cmp eax, 255 |
||
668 | jnz notsdebug |
||
669 | |||
670 | ; This sub function allows access to debugging information on the stack |
||
671 | ; ebx holds the request: |
||
672 | ; 100 : return length of empty queue |
||
673 | ; 101 : return length of IPOUT QUEUE |
||
674 | ; 102 : return length of IPIN QUEUE |
||
675 | ; 103 : return length of NET1OUT QUEUE |
||
676 | ; 200 : return # of ARP entries |
||
677 | ; 201 : return size of ARP table ( max # entries ) |
||
678 | ; 202 : select ARP table entry # |
||
679 | ; 203 : return IP of selected table entry |
||
680 | ; 204 : return High 4 bytes of MAC address of selected table entry |
||
681 | ; 205 : return low 2 bytes of MAC address of selected table entry |
||
682 | ; 206 : return status word of selected table entry |
||
683 | ; 207 : return Time to live of selected table entry |
||
684 | |||
685 | |||
686 | ; 2 : return number of IP packets received |
||
687 | ; 3 : return number of packets transmitted |
||
688 | ; 4 : return number of received packets dumped |
||
689 | ; 5 : return number of arp packets received |
||
690 | ; 6 : return status of packet driver |
||
691 | ; ( 0 == not active, FFFFFFFF = successful ) |
||
692 | |||
693 | call stack_internal_status |
||
694 | ret |
||
695 | |||
696 | notsdebug: |
||
697 | ; Invalid Option |
||
698 | ret |
||
699 | |||
700 | |||
701 | uglobal |
||
702 | ARPTmp: |
||
703 | times 14 db 0 |
||
704 | endg |
||
705 | |||
706 | ;*************************************************************************** |
||
707 | ; Function |
||
708 | ; stack_internal_status |
||
709 | ; |
||
710 | ; Description |
||
711 | ; Returns information about the internal status of the stack |
||
712 | ; This is only useful for debugging |
||
713 | ; It works with the ethernet driver |
||
714 | ; sub function in ebx |
||
715 | ; return requested data in eax |
||
716 | ; |
||
717 | ;*************************************************************************** |
||
718 | stack_internal_status: |
||
719 | cmp ebx, 100 |
||
720 | jnz notsis100 |
||
721 | |||
722 | ; 100 : return length of EMPTY QUEUE |
||
723 | mov ebx, EMPTY_QUEUE |
||
724 | call queueSize |
||
725 | ret |
||
726 | |||
727 | notsis100: |
||
728 | cmp ebx, 101 |
||
729 | jnz notsis101 |
||
730 | |||
731 | ; 101 : return length of IPOUT QUEUE |
||
732 | mov ebx, IPOUT_QUEUE |
||
733 | call queueSize |
||
734 | ret |
||
735 | |||
736 | notsis101: |
||
737 | cmp ebx, 102 |
||
738 | jnz notsis102 |
||
739 | |||
740 | ; 102 : return length of IPIN QUEUE |
||
741 | mov ebx, IPIN_QUEUE |
||
742 | call queueSize |
||
743 | ret |
||
744 | |||
745 | notsis102: |
||
746 | cmp ebx, 103 |
||
747 | jnz notsis103 |
||
748 | |||
749 | ; 103 : return length of NET1OUT QUEUE |
||
750 | mov ebx, NET1OUT_QUEUE |
||
751 | call queueSize |
||
752 | ret |
||
753 | |||
754 | notsis103: |
||
755 | cmp ebx, 200 |
||
756 | jnz notsis200 |
||
757 | |||
758 | ; 200 : return num entries in arp table |
||
759 | movzx eax, byte [NumARP] |
||
760 | ret |
||
761 | |||
762 | notsis200: |
||
763 | cmp ebx, 201 |
||
764 | jnz notsis201 |
||
765 | |||
766 | ; 201 : return arp table size |
||
767 | mov eax, 20 ; ARP_TABLE_SIZE |
||
768 | ret |
||
769 | |||
770 | notsis201: |
||
771 | cmp ebx, 202 |
||
772 | jnz notsis202 |
||
773 | |||
774 | ; 202 - read the requested table entry |
||
775 | ; into a temporary buffer |
||
776 | ; ecx holds the entry number |
||
777 | |||
778 | mov eax, ecx |
||
779 | mov ecx, 14 ; ARP_ENTRY_SIZE |
||
780 | mul ecx |
||
781 | |||
782 | mov ecx, [eax + ARPTable] |
||
783 | mov [ARPTmp], ecx |
||
784 | mov ecx, [eax + ARPTable+4] |
||
785 | mov [ARPTmp+4], ecx |
||
786 | mov ecx, [eax + ARPTable+8] |
||
787 | mov [ARPTmp+8], ecx |
||
788 | mov cx, [eax + ARPTable+12] |
||
789 | mov [ARPTmp+12], cx |
||
790 | ret |
||
791 | |||
792 | notsis202: |
||
793 | cmp ebx, 203 |
||
794 | jnz notsis203 |
||
795 | |||
796 | ; 203 - return IP address |
||
797 | mov eax, [ARPTmp] |
||
798 | ret |
||
799 | |||
800 | notsis203: |
||
801 | cmp ebx, 204 |
||
802 | jnz notsis204 |
||
803 | |||
804 | ; 204 - return MAC high dword |
||
805 | mov eax, [ARPTmp+4] |
||
806 | ret |
||
807 | |||
808 | notsis204: |
||
809 | cmp ebx, 205 |
||
810 | jnz notsis205 |
||
811 | |||
812 | ; 205 - return MAC ls word |
||
813 | movzx eax, word [ARPTmp+8] |
||
814 | ret |
||
815 | |||
816 | notsis205: |
||
817 | cmp ebx, 206 |
||
818 | jnz notsis206 |
||
819 | |||
820 | ; 206 - return status word |
||
821 | movzx eax, word [ARPTmp+10] |
||
822 | ret |
||
823 | |||
824 | notsis206: |
||
825 | cmp ebx, 207 |
||
826 | jnz notsis207 |
||
827 | |||
828 | ; 207 - return ttl word |
||
829 | movzx eax, word [ARPTmp+12] |
||
830 | ret |
||
831 | |||
832 | notsis207: |
||
833 | cmp ebx, 2 |
||
834 | jnz notsis2 |
||
835 | |||
836 | ; 2 : return number of IP packets received |
||
837 | mov eax, [ip_rx_count] |
||
838 | ret |
||
839 | |||
840 | notsis2: |
||
841 | cmp ebx, 3 |
||
842 | jnz notsis3 |
||
843 | |||
844 | ; 3 : return number of packets transmitted |
||
845 | mov eax, [ip_tx_count] |
||
846 | ret |
||
847 | |||
848 | notsis3: |
||
849 | cmp ebx, 4 |
||
850 | jnz notsis4 |
||
851 | |||
852 | ; 4 : return number of received packets dumped |
||
853 | mov eax, [dumped_rx_count] |
||
854 | ret |
||
855 | |||
856 | notsis4: |
||
857 | cmp ebx, 5 |
||
858 | jnz notsis5 |
||
859 | |||
860 | ; 5 : return number of arp packets received |
||
861 | mov eax, [arp_rx_count] |
||
862 | ret |
||
863 | |||
864 | notsis5: |
||
865 | cmp ebx, 6 |
||
866 | jnz notsis6 |
||
867 | |||
868 | ; 6 : return status of packet driver |
||
869 | ; ( 0 == not active, FFFFFFFF = successful ) |
||
870 | mov eax, [eth_status] |
||
871 | ret |
||
872 | |||
873 | notsis6: |
||
874 | xor eax, eax |
||
875 | ret |
||
876 | |||
877 | |||
878 | |||
879 | ;*************************************************************************** |
||
880 | ; Function |
||
881 | ; stack_get_packet |
||
882 | ; |
||
883 | ; Description |
||
884 | ; extracts an IP packet from the NET1 output queue |
||
885 | ; and sends the data to the calling process |
||
886 | ; pointer to data in edx |
||
887 | ; returns number of bytes read in eax |
||
888 | ; |
||
889 | ;*************************************************************************** |
||
890 | stack_get_packet: |
||
891 | ; Look for a buffer to tx |
||
892 | mov eax, NET1OUT_QUEUE |
||
893 | call dequeue |
||
894 | cmp ax, NO_BUFFER |
||
895 | je sgp_non_exit ; Exit if no buffer available |
||
896 | |||
897 | push eax ; Save buffer number for freeing at end |
||
898 | |||
899 | push edx |
||
900 | ; convert buffer pointer eax to the absolute address |
||
901 | mov ecx, IPBUFFSIZE |
||
902 | mul ecx |
||
903 | add eax, IPbuffs |
||
904 | pop edx |
||
905 | |||
906 | push eax ; save address of IP data |
||
907 | |||
908 | ; Get the address of the callers data |
||
909 | mov edi,[0x3010] |
||
115 | poddubny | 910 | add edi,TASKDATA.mem_start |
1 | ha | 911 | add edx,[edi] |
912 | mov edi, edx |
||
913 | |||
914 | pop eax |
||
915 | |||
916 | mov ecx, 1500 ; should get the actual number of bytes to write |
||
917 | mov esi, eax |
||
918 | cld |
||
919 | rep movsb ; copy the data across |
||
920 | |||
921 | ; And finally, return the buffer to the free queue |
||
922 | pop eax |
||
923 | call freeBuff |
||
924 | |||
925 | mov eax, 1500 |
||
926 | ret |
||
927 | |||
928 | sgp_non_exit: |
||
929 | xor eax, eax |
||
930 | ret |
||
931 | |||
932 | |||
933 | |||
934 | ;*************************************************************************** |
||
935 | ; Function |
||
936 | ; stack_insert_packet |
||
937 | ; |
||
938 | ; Description |
||
939 | ; writes an IP packet into the stacks receive queue |
||
940 | ; # of bytes to write in ecx |
||
941 | ; pointer to data in edx |
||
942 | ; returns 0 in eax ok, -1 == failed |
||
943 | ; |
||
944 | ;*************************************************************************** |
||
945 | stack_insert_packet: |
||
946 | |||
947 | mov eax, EMPTY_QUEUE |
||
948 | call dequeue |
||
949 | cmp ax, NO_BUFFER |
||
950 | je sip_err_exit |
||
951 | |||
952 | push eax |
||
953 | |||
954 | ; save the pointers to the data buffer & size |
||
955 | push edx |
||
956 | push ecx |
||
957 | |||
958 | ; convert buffer pointer eax to the absolute address |
||
959 | mov ecx, IPBUFFSIZE |
||
960 | mul ecx |
||
961 | add eax, IPbuffs |
||
962 | |||
963 | mov edx, eax |
||
964 | |||
965 | ; So, edx holds the IPbuffer ptr |
||
966 | |||
967 | pop ecx ; count of bytes to send |
||
968 | mov ebx, ecx ; need the length later |
||
969 | pop eax ; get callers ptr to data to send |
||
970 | |||
971 | ; Get the address of the callers data |
||
972 | mov edi,[0x3010] |
||
115 | poddubny | 973 | add edi,TASKDATA.mem_start |
1 | ha | 974 | add eax,[edi] |
975 | mov esi, eax |
||
976 | |||
977 | mov edi, edx |
||
978 | cld |
||
979 | rep movsb ; copy the data across |
||
980 | |||
981 | pop ebx |
||
982 | |||
983 | mov eax, IPIN_QUEUE |
||
984 | call queue |
||
985 | |||
986 | inc dword [ip_rx_count] |
||
987 | |||
988 | mov eax, 0 |
||
989 | ret |
||
990 | |||
991 | sip_err_exit: |
||
992 | mov eax, 0xFFFFFFFF |
||
993 | ret |
||
994 |