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| Rev 2629 | Rev 2877 | ||
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| 14 | ;; GNU GENERAL PUBLIC LICENSE ;; |
14 | ;; GNU GENERAL PUBLIC LICENSE ;; |
| 15 | ;; Version 2, June- 1991 ;; |
15 | ;; Version 2, June- 1991 ;; |
| 16 | ;; ;; |
16 | ;; ;; |
| 17 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
17 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| Line 18... | Line 18... | ||
| 18 | 18 | ||
| Line 19... | Line 19... | ||
| 19 | $Revision: 2629 $ |
19 | $Revision: 2877 $ |
| 20 | 20 | ||
| 21 | ARP_NO_ENTRY = 0 |
21 | ARP_NO_ENTRY = 0 |
| 22 | ARP_VALID_MAPPING = 1 |
22 | ARP_VALID_MAPPING = 1 |
| Line 280... | Line 280... | ||
| 280 | ;--------------------------------------------------------------------------- |
280 | ;--------------------------------------------------------------------------- |
| 281 | ; |
281 | ; |
| 282 | ; ARP_output_request |
282 | ; ARP_output_request |
| 283 | ; |
283 | ; |
| 284 | ; IN: ip in eax |
284 | ; IN: ip in eax |
| - | 285 | ; device in edi |
|
| 285 | ; OUT: / |
286 | ; OUT: / |
| 286 | ; |
287 | ; |
| 287 | ;--------------------------------------------------------------------------- |
288 | ;--------------------------------------------------------------------------- |
| 288 | align 4 |
289 | align 4 |
| 289 | ARP_output_request: |
290 | ARP_output_request: |
| Line 290... | Line 291... | ||
| 290 | 291 | ||
| Line 291... | Line -... | ||
| 291 | DEBUGF 1,"Create ARP Packet\n" |
- | |
| 292 | 292 | DEBUGF 1,"Create ARP Packet\n" |
|
| 293 | call IPv4_dest_to_dev |
293 | |
| Line 294... | Line 294... | ||
| 294 | push eax ; DestIP |
294 | push eax ; DestIP |
| Line 439... | Line 439... | ||
| 439 | ; ARP_IP_to_MAC |
439 | ; ARP_IP_to_MAC |
| 440 | ; |
440 | ; |
| 441 | ; This function translates an IP address to a MAC address |
441 | ; This function translates an IP address to a MAC address |
| 442 | ; |
442 | ; |
| 443 | ; IN: eax = IPv4 address |
443 | ; IN: eax = IPv4 address |
| - | 444 | ; edi = device number |
|
| 444 | ; OUT: eax = -1 on error, -2 means request send |
445 | ; OUT: eax = -1 on error, -2 means request send |
| 445 | ; else, ax = first two bytes of mac (high 16 bits of eax will be 0) |
446 | ; else, ax = first two bytes of mac (high 16 bits of eax will be 0) |
| 446 | ; ebx = last four bytes of mac |
447 | ; ebx = last four bytes of mac |
| - | 448 | ; edi = unchanged |
|
| 447 | ; |
449 | ; |
| 448 | ;----------------------------------------------------------------- |
450 | ;----------------------------------------------------------------- |
| 449 | align 4 |
451 | align 4 |
| 450 | ARP_IP_to_MAC: |
452 | ARP_IP_to_MAC: |
| Line 455... | Line 457... | ||
| 455 | rol eax, 16 |
457 | rol eax, 16 |
| Line 456... | Line 458... | ||
| 456 | 458 | ||
| 457 | cmp eax, 0xffffffff |
459 | cmp eax, 0xffffffff |
| Line 458... | Line -... | ||
| 458 | je .broadcast |
- | |
| 459 | - | ||
| 460 | ; if ((Remote IP & subnet_mask) == (local IP & subnet_mask )) |
- | |
| 461 | ; destination is on same subnet |
- | |
| 462 | ; else, destination is remote and must use a gateway |
- | |
| 463 | - | ||
| 464 | call IPv4_dest_to_dev |
- | |
| 465 | mov ebx, [IP_LIST + edi] |
- | |
| 466 | and ebx, [SUBNET_LIST + edi] |
- | |
| 467 | - | ||
| 468 | mov ecx, eax |
- | |
| 469 | and ecx, [SUBNET_LIST + edi] |
- | |
| 470 | - | ||
| 471 | cmp ecx, ebx |
- | |
| 472 | je .local |
- | |
| 473 | - | ||
| 474 | mov eax, [GATEWAY_LIST + edi] |
- | |
| 475 | DEBUGF 1,"requested IP is not on subnet, using default gateway\n" |
460 | je .broadcast |
| 476 | 461 | ||
| Line 477... | Line -... | ||
| 477 | ;-------------------------------- |
- | |
| 478 | ; Try to find the IP in ARP_table |
462 | ;-------------------------------- |
| 479 | 463 | ; Try to find the IP in ARP_table |
|
| 480 | .local: |
464 | |
| 481 | mov ecx, [NumARP] |
465 | mov ecx, [NumARP] |
| 482 | test ecx, ecx |
466 | test ecx, ecx |
| Line 492... | Line 476... | ||
| 492 | DEBUGF 1,"IP not found on list, preparing for ARP request\n" |
476 | DEBUGF 1,"IP not found on list, preparing for ARP request\n" |
| Line 493... | Line 477... | ||
| 493 | 477 | ||
| 494 | ;-------------------- |
478 | ;-------------------- |
| Line 495... | Line 479... | ||
| 495 | ; Send an ARP request |
479 | ; Send an ARP request |
| Line 496... | Line 480... | ||
| 496 | 480 | ||
| 497 | push eax ; save IP for ARP_output_request |
481 | push eax edi ; save IP for ARP_output_request |
| 498 | 482 | ||
| 499 | ; Now create the ARP entry |
483 | ; Now create the ARP entry |
| Line 508... | Line 492... | ||
| 508 | 492 | ||
| 509 | cmp eax, -1 |
493 | cmp eax, -1 |
| Line 510... | Line 494... | ||
| 510 | je .full |
494 | je .full |
| 511 | 495 | ||
| 512 | ; And send a request |
496 | ; And send a request |
| 513 | pop eax |
497 | pop edi eax |
| Line 514... | Line 498... | ||
| 514 | call ARP_output_request ; IP in eax |
498 | call ARP_output_request ; IP in eax |
| 515 | ;; TODO: check if driver could transmit packet |
499 | ;; TODO: check if driver could transmit packet |
| Line 530... | Line 514... | ||
| 530 | mov eax, -1 |
514 | mov eax, -1 |
| 531 | ret |
515 | ret |
| Line 532... | Line 516... | ||
| 532 | 516 | ||
| 533 | .full: |
517 | .full: |
| 534 | DEBUGF 1,"ARP table is full!\n" |
518 | DEBUGF 1,"ARP table is full!\n" |
| 535 | pop eax |
519 | add esp, 8 |
| 536 | mov eax, -1 |
520 | mov eax, -1 |
| Line 537... | Line 521... | ||
| 537 | ret |
521 | ret |
| 538 | 522 | ||