Rev 3556 | Go to most recent revision | Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
3545 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
||
3 | ;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;; |
||
4 | ;; Distributed under terms of the GNU General Public License ;; |
||
5 | ;; ;; |
||
6 | ;; ARP.INC ;; |
||
7 | ;; ;; |
||
8 | ;; Part of the tcp/ip network stack for KolibriOS ;; |
||
9 | ;; ;; |
||
10 | ;; Based on the work of [Johnny_B] and [smb] ;; |
||
11 | ;; ;; |
||
12 | ;; Written by hidnplayr@kolibrios.org ;; |
||
13 | ;; ;; |
||
14 | ;; GNU GENERAL PUBLIC LICENSE ;; |
||
15 | ;; Version 2, June- 1991 ;; |
||
16 | ;; ;; |
||
17 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
18 | |||
19 | $Revision: 3386 $ |
||
20 | |||
21 | ARP_NO_ENTRY = 0 |
||
22 | ARP_VALID_MAPPING = 1 |
||
23 | ARP_AWAITING_RESPONSE = 2 |
||
24 | ARP_RESPONSE_TIMEOUT = 3 |
||
25 | |||
26 | ARP_REQUEST_TTL = 31 ; 20 s |
||
27 | ARP_ENTRY_TTL = 937 ; 600 s |
||
28 | ARP_STATIC_ENTRY = -1 |
||
29 | |||
30 | ARP_REQ_OPCODE = 0x0100 ; request |
||
31 | ARP_REP_OPCODE = 0x0200 ; reply |
||
32 | |||
33 | ARP_TABLE_SIZE = 20 ; Size of table |
||
34 | |||
35 | struct ARP_entry |
||
36 | |||
37 | IP dd ? |
||
38 | MAC dp ? |
||
39 | Status dw ? |
||
40 | TTL dw ? |
||
41 | |||
42 | ends |
||
43 | |||
44 | struct ARP_header |
||
45 | |||
46 | HardwareType dw ? |
||
47 | ProtocolType dw ? |
||
48 | HardwareSize db ? |
||
49 | ProtocolSize db ? |
||
50 | Opcode dw ? |
||
51 | SenderMAC dp ? |
||
52 | SenderIP dd ? |
||
53 | TargetMAC dp ? |
||
54 | TargetIP dd ? |
||
55 | |||
56 | ends |
||
57 | |||
58 | align 4 |
||
59 | uglobal |
||
60 | |||
61 | NumARP dd ? |
||
62 | |||
63 | ARP_table rb ARP_TABLE_SIZE * sizeof.ARP_entry ; TODO: separate ARP table and stats per interface |
||
64 | |||
65 | ARP_PACKETS_TX rd MAX_NET_DEVICES |
||
66 | ARP_PACKETS_RX rd MAX_NET_DEVICES |
||
67 | ARP_CONFLICTS rd MAX_NET_DEVICES |
||
68 | |||
69 | |||
70 | endg |
||
71 | |||
72 | |||
73 | |||
74 | ;----------------------------------------------------------------- |
||
75 | ; |
||
76 | ; ARP_init |
||
77 | ; |
||
78 | ; This function resets all ARP variables |
||
79 | ; |
||
80 | ;----------------------------------------------------------------- |
||
81 | macro ARP_init { |
||
82 | |||
83 | xor eax, eax |
||
84 | mov [NumARP], eax |
||
85 | |||
86 | mov edi, ARP_PACKETS_TX |
||
87 | mov ecx, 3*MAX_NET_DEVICES |
||
88 | rep stosd |
||
89 | |||
90 | } |
||
91 | |||
92 | ;--------------------------------------------------------------------------- |
||
93 | ; |
||
94 | ; ARP_decrease_entry_ttls |
||
95 | ; |
||
96 | ;--------------------------------------------------------------------------- |
||
97 | |||
98 | macro ARP_decrease_entry_ttls { |
||
99 | |||
100 | local .loop |
||
101 | local .exit |
||
102 | |||
103 | ; The TTL field is decremented every second, and is deleted when it reaches 0. |
||
104 | ; It is refreshed every time a packet is received. |
||
105 | ; If the TTL field is 0xFFFF it is a static entry and is never deleted. |
||
106 | ; The status field can be the following values: |
||
107 | ; 0x0000 entry not used |
||
108 | ; 0x0001 entry holds a valid mapping |
||
109 | ; 0x0002 entry contains an IP address, awaiting ARP response |
||
110 | ; 0x0003 No response received to ARP request. |
||
111 | ; The last status value is provided to allow the network layer to delete |
||
112 | ; a packet that is queued awaiting an ARP response |
||
113 | |||
114 | mov ecx, [NumARP] |
||
115 | test ecx, ecx |
||
116 | jz .exit |
||
117 | |||
118 | mov esi, ARP_table |
||
119 | .loop: |
||
120 | cmp [esi + ARP_entry.TTL], ARP_STATIC_ENTRY |
||
121 | je .next |
||
122 | |||
123 | dec [esi + ARP_entry.TTL] |
||
124 | jz .time_out |
||
125 | |||
126 | .next: |
||
127 | add esi, sizeof.ARP_entry |
||
128 | dec ecx |
||
129 | jnz .loop |
||
130 | jmp .exit |
||
131 | |||
132 | .time_out: |
||
133 | cmp [esi + ARP_entry.Status], ARP_AWAITING_RESPONSE |
||
134 | je .response_timeout |
||
135 | |||
136 | push esi ecx |
||
137 | call ARP_del_entry |
||
138 | pop ecx esi |
||
139 | |||
140 | jmp .next |
||
141 | |||
142 | .response_timeout: |
||
143 | mov [esi + ARP_entry.Status], ARP_RESPONSE_TIMEOUT |
||
144 | mov [esi + ARP_entry.TTL], 10 |
||
145 | |||
146 | jmp .next |
||
147 | |||
148 | .exit: |
||
149 | |||
150 | } |
||
151 | |||
152 | |||
153 | ;----------------------------------------------------------------- |
||
154 | ; |
||
155 | ; ARP_input |
||
156 | ; |
||
157 | ; IN: Pointer to buffer in [esp] |
||
158 | ; size of buffer in [esp+4] |
||
159 | ; packet size (without ethernet header) in ecx |
||
160 | ; packet ptr in edx |
||
161 | ; device ptr in ebx |
||
162 | ; OUT: / |
||
163 | ; |
||
164 | ;----------------------------------------------------------------- |
||
165 | align 4 |
||
166 | ARP_input: |
||
167 | |||
168 | ;----------------------------------------- |
||
169 | ; Check validity and print some debug info |
||
170 | |||
171 | cmp ecx, sizeof.ARP_header |
||
172 | jb .exit |
||
173 | |||
174 | call NET_ptr_to_num |
||
175 | cmp edi, -1 |
||
176 | jz .exit |
||
177 | |||
178 | inc [ARP_PACKETS_RX + 4*edi] ; update stats |
||
179 | |||
180 | DEBUGF 1,"ARP_input: got packet from %u.%u.%u.%u through device %u\n",\ |
||
181 | [edx + ARP_header.SenderIP]:1, [edx + ARP_header.SenderIP + 1]:1,\ |
||
182 | [edx + ARP_header.SenderIP + 2]:1, [edx + ARP_header.SenderIP + 3]:1, edi |
||
183 | |||
184 | ;------------------------------ |
||
185 | ; First, check for IP collision |
||
186 | |||
187 | mov eax, [edx + ARP_header.SenderIP] |
||
188 | cmp eax, [IP_LIST + 4*edi] |
||
189 | je .collision |
||
190 | |||
191 | ;--------------------- |
||
192 | ; Handle reply packets |
||
193 | |||
194 | cmp [edx + ARP_header.Opcode], ARP_REP_OPCODE |
||
195 | jne .maybe_request |
||
196 | |||
197 | DEBUGF 1,"ARP_input: It's a reply\n" |
||
198 | |||
199 | mov ecx, [NumARP] |
||
200 | test ecx, ecx |
||
201 | jz .exit |
||
202 | |||
203 | mov esi, ARP_table |
||
204 | .loop: |
||
205 | cmp [esi + ARP_entry.IP], eax |
||
206 | je .gotit |
||
207 | add esi, sizeof.ARP_entry |
||
208 | dec ecx |
||
209 | jnz .loop |
||
210 | |||
211 | DEBUGF 1,"ARP_input: no matching entry found\n" |
||
212 | jmp .exit |
||
213 | |||
214 | .gotit: |
||
215 | DEBUGF 1,"ARP_input: found matching entry\n" |
||
216 | |||
217 | cmp [esi + ARP_entry.TTL], ARP_STATIC_ENTRY ; if it is a static entry, dont touch it |
||
218 | je .exit |
||
219 | |||
220 | DEBUGF 1,"ARP_input: updating entry\n" |
||
221 | |||
222 | mov [esi + ARP_entry.Status], ARP_VALID_MAPPING |
||
223 | mov [esi + ARP_entry.TTL], ARP_ENTRY_TTL |
||
224 | |||
225 | mov eax, dword [edx + ARP_header.SenderMAC] |
||
226 | mov dword [esi + ARP_entry.MAC], eax |
||
227 | mov cx, word [edx + ARP_header.SenderMAC + 4] |
||
228 | mov word [esi + ARP_entry.MAC + 4], cx |
||
229 | |||
230 | jmp .exit |
||
231 | |||
232 | ;----------------------- |
||
233 | ; Handle request packets |
||
234 | |||
235 | .maybe_request: |
||
236 | cmp [edx + ARP_header.Opcode], ARP_REQ_OPCODE |
||
237 | jne .exit |
||
238 | |||
239 | DEBUGF 1,"ARP_input: its a request\n" |
||
240 | |||
241 | mov eax, [IP_LIST + 4*edi] |
||
242 | cmp eax, [edx + ARP_header.TargetIP] ; Is it looking for my IP address? |
||
243 | jne .exit |
||
244 | |||
245 | push eax |
||
246 | push edi |
||
247 | |||
248 | ; OK, it is a request for one of our MAC addresses. |
||
249 | ; Build the frame and send it. We can reuse the buffer. (faster then using ARP_create_packet) |
||
250 | |||
251 | lea esi, [edx + ARP_header.SenderMAC] |
||
252 | lea edi, [edx + ARP_header.TargetMAC] |
||
253 | movsd ; Move Sender Mac to Dest MAC |
||
254 | movsw ; |
||
255 | movsd ; Move sender IP to Dest IP |
||
256 | |||
257 | pop esi |
||
258 | mov esi, [NET_DRV_LIST + 4*esi] |
||
259 | lea esi, [esi + ETH_DEVICE.mac] |
||
260 | lea edi, [edx + ARP_header.SenderMAC] |
||
261 | movsd ; Copy MAC address from in MAC_LIST |
||
262 | movsw ; |
||
263 | pop eax |
||
264 | stosd ; Write our IP |
||
265 | |||
266 | mov [edx + ARP_header.Opcode], ARP_REP_OPCODE |
||
267 | |||
268 | ; Now, Fill in ETHERNET header |
||
269 | |||
270 | mov edi, [esp] |
||
271 | lea esi, [edx + ARP_header.TargetMAC] |
||
272 | movsd |
||
273 | movsw |
||
274 | lea esi, [edx + ARP_header.SenderMAC] |
||
275 | movsd |
||
276 | movsw |
||
277 | ; mov ax , ETHER_ARP ; It's already there, I'm sure of it! |
||
278 | ; stosw |
||
279 | |||
280 | DEBUGF 1,"ARP_input: Sending reply\n" |
||
281 | |||
282 | call [ebx + NET_DEVICE.transmit] |
||
283 | ret |
||
284 | |||
285 | .collision: |
||
286 | inc [ARP_CONFLICTS + 4*edi] |
||
287 | DEBUGF 1,"ARP_input: IP address conflict detected!\n" |
||
288 | |||
289 | .exit: |
||
290 | call kernel_free |
||
291 | add esp, 4 ; pop (balance stack) |
||
292 | |||
293 | DEBUGF 1,"ARP_input: exiting\n" |
||
294 | ret |
||
295 | |||
296 | |||
297 | ;--------------------------------------------------------------------------- |
||
298 | ; |
||
299 | ; ARP_output_request |
||
300 | ; |
||
301 | ; IN: ip in eax |
||
302 | ; device in edi |
||
303 | ; OUT: / |
||
304 | ; |
||
305 | ;--------------------------------------------------------------------------- |
||
306 | align 4 |
||
307 | ARP_output_request: |
||
308 | |||
309 | push eax ; DestIP |
||
310 | pushd [IP_LIST + edi] ; SenderIP |
||
311 | inc [ARP_PACKETS_TX + edi] ; assume we will succeed |
||
312 | |||
313 | DEBUGF 1,"ARP_output_request: ip=%u.%u.%u.%u\n",\ |
||
314 | [esp + 4]:1, [esp + 5]:1, [esp + 6]:1, [esp + 7]:1 |
||
315 | |||
316 | mov ebx, [NET_DRV_LIST + edi] ; device ptr |
||
317 | |||
318 | lea eax, [ebx + ETH_DEVICE.mac] ; local device mac |
||
319 | mov edx, ETH_BROADCAST ; broadcast mac |
||
320 | mov ecx, sizeof.ARP_header |
||
321 | mov di, ETHER_ARP |
||
322 | call ETH_output |
||
323 | jz .exit |
||
324 | |||
325 | mov ecx, eax |
||
326 | |||
327 | mov [edi + ARP_header.HardwareType], 0x0100 ; Ethernet |
||
328 | mov [edi + ARP_header.ProtocolType], 0x0008 ; IP |
||
329 | mov [edi + ARP_header.HardwareSize], 6 ; MAC-addr length |
||
330 | mov [edi + ARP_header.ProtocolSize], 4 ; IP-addr length |
||
331 | mov [edi + ARP_header.Opcode], ARP_REQ_OPCODE ; Request |
||
332 | |||
333 | add edi, ARP_header.SenderMAC |
||
334 | |||
335 | lea esi, [ebx + ETH_DEVICE.mac] ; SenderMac |
||
336 | movsw ; |
||
337 | movsd ; |
||
338 | pop eax ; SenderIP |
||
339 | stosd ; |
||
340 | |||
341 | mov eax, -1 ; DestMac |
||
342 | stosd ; |
||
343 | stosw ; |
||
344 | pop eax ; DestIP |
||
345 | stosd ; |
||
346 | |||
347 | DEBUGF 1,"ARP_output_request: device=%x\n", ebx |
||
348 | |||
349 | push edx ecx |
||
350 | call [ebx + NET_DEVICE.transmit] |
||
351 | ret |
||
352 | |||
353 | .exit: |
||
354 | add esp, 4 + 4 |
||
355 | DEBUGF 1,"ARP_output_request: failed\n" |
||
356 | sub eax, eax |
||
357 | ret |
||
358 | |||
359 | |||
360 | ;----------------------------------------------------------------- |
||
361 | ; |
||
362 | ; ARP_add_entry (or update) |
||
363 | ; |
||
364 | ; IN: esi = ptr to entry (can easily be made on the stack) |
||
365 | ; OUT: eax = entry #, -1 on error |
||
366 | ; edi = ptr to newly created entry |
||
367 | ; |
||
368 | ;----------------------------------------------------------------- ; TODO: use a mutex |
||
369 | align 4 |
||
370 | ARP_add_entry: |
||
371 | |||
372 | DEBUGF 1,"ARP_add_entry: " |
||
373 | |||
374 | mov ecx, [NumARP] |
||
375 | cmp ecx, ARP_TABLE_SIZE ; list full ? |
||
376 | jae .error |
||
377 | |||
378 | xor eax, eax |
||
379 | mov edi, ARP_table |
||
380 | mov ecx, [esi + ARP_entry.IP] |
||
381 | .loop: |
||
382 | cmp [edi + ARP_entry.Status], ARP_NO_ENTRY ; is this slot empty? |
||
383 | je .add |
||
384 | |||
385 | cmp [edi + ARP_entry.IP], ecx ; if not, check if it doesnt collide |
||
386 | jne .maybe_next |
||
387 | |||
388 | cmp [edi + ARP_entry.TTL], ARP_STATIC_ENTRY ; ok, its the same IP, update it if not static |
||
389 | jne .add |
||
390 | |||
391 | .maybe_next: ; try the next slot |
||
392 | add edi, sizeof.ARP_entry |
||
393 | inc eax |
||
394 | cmp eax, ARP_TABLE_SIZE |
||
395 | jae .error |
||
396 | jmp .loop |
||
397 | |||
398 | .add: |
||
399 | mov ecx, sizeof.ARP_entry/2 |
||
400 | rep movsw |
||
401 | inc [NumARP] |
||
402 | sub edi, sizeof.ARP_entry |
||
403 | DEBUGF 1,"entry=%u\n", eax |
||
404 | |||
405 | ret |
||
406 | |||
407 | .error: |
||
408 | DEBUGF 1,"failed\n" |
||
409 | mov eax, -1 |
||
410 | ret |
||
411 | |||
412 | |||
413 | ;----------------------------------------------------------------- |
||
414 | ; |
||
415 | ; ARP_del_entry |
||
416 | ; |
||
417 | ; IN: esi = ptr to arp entry |
||
418 | ; OUT: / |
||
419 | ; |
||
420 | ;----------------------------------------------------------------- |
||
421 | align 4 |
||
422 | ARP_del_entry: |
||
423 | |||
424 | DEBUGF 1,"ARP_del_entry: entry=%x entrys=%u\n", esi, [NumARP] |
||
425 | DEBUGF 1,"ARP_del_entry: IP=%u.%u.%u.%u\n", \ |
||
426 | [esi + ARP_entry.IP]:1, [esi + ARP_entry.IP + 1]:1, [esi + ARP_entry.IP + 2]:1, [esi + ARP_entry.IP + 3]:1 |
||
427 | |||
428 | mov ecx, ARP_table + (ARP_TABLE_SIZE - 1) * sizeof.ARP_entry |
||
429 | sub ecx, esi |
||
430 | shr ecx, 1 |
||
431 | |||
432 | mov edi, esi |
||
433 | add esi, sizeof.ARP_entry |
||
434 | rep movsw |
||
435 | |||
436 | xor eax, eax |
||
437 | mov ecx, sizeof.ARP_entry/2 |
||
438 | rep stosw |
||
439 | |||
440 | dec [NumARP] |
||
441 | DEBUGF 1,"ARP_del_entry: success\n" |
||
442 | |||
443 | ret |
||
444 | |||
445 | |||
446 | |||
447 | |||
448 | |||
449 | ;----------------------------------------------------------------- |
||
450 | ; |
||
451 | ; ARP_IP_to_MAC |
||
452 | ; |
||
453 | ; This function translates an IP address to a MAC address |
||
454 | ; |
||
455 | ; IN: eax = IPv4 address |
||
456 | ; edi = device number |
||
457 | ; OUT: eax = -1 on error, -2 means request send |
||
458 | ; else, ax = first two bytes of mac (high 16 bits of eax will be 0) |
||
459 | ; ebx = last four bytes of mac |
||
460 | ; edi = unchanged |
||
461 | ; |
||
462 | ;----------------------------------------------------------------- |
||
463 | align 4 |
||
464 | ARP_IP_to_MAC: |
||
465 | |||
466 | DEBUGF 1,"ARP_IP_to_MAC: %u.%u", al, ah |
||
467 | rol eax, 16 |
||
468 | DEBUGF 1,".%u.%u\n", al, ah |
||
469 | rol eax, 16 |
||
470 | |||
471 | cmp eax, 0xffffffff |
||
472 | je .broadcast |
||
473 | |||
474 | ;-------------------------------- |
||
475 | ; Try to find the IP in ARP_table |
||
476 | |||
477 | mov ecx, [NumARP] |
||
478 | test ecx, ecx |
||
479 | jz .not_in_list |
||
480 | mov esi, ARP_table + ARP_entry.IP |
||
481 | .scan_loop: |
||
482 | cmp [esi], eax |
||
483 | je .found_it |
||
484 | add esi, sizeof.ARP_entry |
||
485 | loop .scan_loop |
||
486 | |||
487 | .not_in_list: |
||
488 | DEBUGF 1,"ARP_IP_to_MAC: preparing for ARP request\n" |
||
489 | |||
490 | ;-------------------- |
||
491 | ; Send an ARP request |
||
492 | |||
493 | push eax edi ; save IP for ARP_output_request |
||
494 | |||
495 | ; Now create the ARP entry |
||
496 | pushw ARP_REQUEST_TTL ; TTL |
||
497 | pushw ARP_AWAITING_RESPONSE ; status |
||
498 | pushd 0 ; mac |
||
499 | pushw 0 |
||
500 | pushd eax ; ip |
||
501 | mov esi, esp |
||
502 | call ARP_add_entry |
||
503 | add esp, sizeof.ARP_entry ; clear the entry from stack |
||
504 | |||
505 | cmp eax, -1 ; did ARP_add_entry fail? |
||
506 | je .full |
||
507 | |||
508 | mov esi, edi |
||
509 | pop edi eax ; IP in eax, device number in edi, for ARP_output_request |
||
510 | |||
511 | push esi edi |
||
512 | call ARP_output_request ; And send a request |
||
513 | pop edi esi |
||
514 | |||
515 | ;----------------------------------------------- |
||
516 | ; At this point, we got an ARP entry in the list |
||
517 | .found_it: |
||
518 | cmp [esi + ARP_entry.Status], ARP_VALID_MAPPING ; Does it have a MAC assigned? |
||
519 | je .valid |
||
520 | |||
521 | if ARP_BLOCK |
||
522 | |||
523 | cmp [esi + ARP_entry.Status], ARP_AWAITING_RESPONSE ; Are we waiting for reply from remote end? |
||
524 | jne .give_up |
||
525 | push esi |
||
526 | mov esi, 10 ; wait 10 ms |
||
527 | call delay_ms |
||
528 | pop esi |
||
529 | jmp .found_it ; now check again |
||
530 | |||
531 | else |
||
532 | |||
533 | jmp .give_up |
||
534 | |||
535 | end if |
||
536 | |||
537 | .valid: |
||
538 | DEBUGF 1,"ARP_IP_to_MAC: found MAC\n" |
||
539 | movzx eax, word[esi + ARP_entry.MAC] |
||
540 | mov ebx, dword[esi + ARP_entry.MAC + 2] |
||
541 | ret |
||
542 | |||
543 | .full: |
||
544 | DEBUGF 1,"ARP_IP_to_MAC: table is full!\n" |
||
545 | add esp, 8 |
||
546 | .give_up: |
||
547 | DEBUGF 1,"ARP_IP_to_MAC: entry has no valid mapping!\n" |
||
548 | mov eax, -1 |
||
549 | ret |
||
550 | |||
551 | .broadcast: |
||
552 | mov eax, 0x0000ffff |
||
553 | mov ebx, 0xffffffff |
||
554 | ret |
||
555 | |||
556 | |||
557 | ;----------------------------------------------------------------- |
||
558 | ; |
||
559 | ; ARP_API |
||
560 | ; |
||
561 | ; This function is called by system function 75 |
||
562 | ; |
||
563 | ; IN: subfunction number in bl |
||
564 | ; device number in bh |
||
565 | ; ecx, edx, .. depends on subfunction |
||
566 | ; |
||
567 | ; OUT: ? |
||
568 | ; |
||
569 | ;----------------------------------------------------------------- |
||
570 | align 4 |
||
571 | ARP_api: |
||
572 | |||
573 | movzx eax, bh |
||
574 | shl eax, 2 |
||
575 | |||
576 | and ebx, 0xff |
||
577 | cmp ebx, .number |
||
578 | ja .error |
||
579 | jmp dword [.table + 4*ebx] |
||
580 | |||
581 | .table: |
||
582 | dd .packets_tx ; 0 |
||
583 | dd .packets_rx ; 1 |
||
584 | dd .entries ; 2 |
||
585 | dd .read ; 3 |
||
586 | dd .write ; 4 |
||
587 | dd .remove ; 5 |
||
588 | dd .send_announce ; 6 |
||
589 | dd .conflicts ; 7 |
||
590 | .number = ($ - .table) / 4 - 1 |
||
591 | |||
592 | .error: |
||
593 | mov eax, -1 |
||
594 | ret |
||
595 | |||
596 | .packets_tx: |
||
597 | mov eax, [ARP_PACKETS_TX + eax] |
||
598 | ret |
||
599 | |||
600 | .packets_rx: |
||
601 | mov eax, [ARP_PACKETS_RX + eax] |
||
602 | ret |
||
603 | |||
604 | .conflicts: |
||
605 | mov eax, [ARP_CONFLICTS + eax] |
||
606 | ret |
||
607 | |||
608 | .entries: |
||
609 | mov eax, [NumARP] |
||
610 | ret |
||
611 | |||
612 | .read: |
||
613 | cmp ecx, [NumARP] |
||
614 | jae .error |
||
615 | ; edi = pointer to buffer |
||
616 | ; ecx = # entry |
||
617 | imul ecx, sizeof.ARP_entry |
||
618 | add ecx, ARP_table |
||
619 | mov esi, ecx |
||
620 | mov ecx, sizeof.ARP_entry/2 |
||
621 | rep movsw |
||
622 | |||
623 | xor eax, eax |
||
624 | ret |
||
625 | |||
626 | .write: |
||
627 | ; esi = pointer to buffer |
||
628 | call ARP_add_entry ; out: eax = entry number, -1 on error |
||
629 | ret |
||
630 | |||
631 | .remove: |
||
632 | ; ecx = # entry |
||
633 | cmp ecx, [NumARP] |
||
634 | jae .error |
||
635 | imul ecx, sizeof.ARP_entry |
||
636 | lea esi, [ARP_table + ecx] |
||
637 | call ARP_del_entry |
||
638 | ret |
||
639 | |||
640 | .send_announce: |
||
641 | mov edi, eax |
||
642 | mov eax, [IP_LIST + eax] |
||
643 | call ARP_output_request ; now send a gratuitous ARP |
||
644 | ret |
||
645 |