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Rev 2731 Rev 2877
Line 14... Line 14...
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...
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 18 
 
Line 19... Line 19...
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$Revision: 2731 $
 19 
$Revision: 2877 $
20 
 
 20 
 
21 
MAX_FRAGMENTS                   = 64
 21 
MAX_FRAGMENTS                   = 64
Line 554... Line 554...
554 
;------------------------------------------------------------------
 554 
;------------------------------------------------------------------
555 
;
 555 
;
556 
; IPv4_output
 556 
; IPv4_output
557 
;
 557 
;
558 
; IN: eax = dest ip
 558 
; IN: eax = dest ip
559 
;     ebx = source ip
 559 
;     ebx = output device ptr/0 for automatic choice
560 
;     ecx = data length
 560 
;     ecx = data length
561 
;     dx  = fragment id
 561 
;     edx = source ip
562 
;     di  = TTL shl 8 + protocol
 562 
;     di  = TTL shl 8 + protocol
563 
;
 563 
;
564 
; OUT: eax = pointer to buffer start
 564 
; OUT: eax = pointer to buffer start
565 
;      ebx = pointer to device struct (needed for sending procedure)
 565 
;      ebx = pointer to device struct (needed for sending procedure)
566 
;      ecx = unchanged (packet size of embedded data)
 566 
;      ecx = unchanged (packet size of embedded data)
Line 574... Line 574...
574 
        DEBUGF  1,"IPv4_output: size=%u\n", ecx
 574 
        DEBUGF  1,"IPv4_output: size=%u\n", ecx
Line 575... Line 575...
575 
 
 575 
 
576 
        cmp     ecx, 65500              ; Max IPv4 packet size
 576 
        cmp     ecx, 65500              ; Max IPv4 packet size
Line 577... Line 577...
577 
        ja      .too_large
 577 
        ja      .too_large
Line -... Line 578...
- 
 
 578 
 
578 
 
 579 
        push    ecx eax edx di
579 
        push    ecx eax ebx dx di
 - 
 
580 
 
 580 
 
581 
        call    ARP_IP_to_MAC
 581 
        call    IPv4_dest_to_dev        ; outputs device number in edi, dest ip in eax
582 
 
 - 
 
583 
        test    eax, 0xffff0000         ; error bits
 582 
        call    ARP_IP_to_MAC
584 
        jnz     .arp_error
 583 
        test    eax, 0xffff0000         ; error bits
Line 585... Line -...
585 
 
 - 
 
586 
        push    ebx     ; push the mac
 584 
        jnz     .arp_error
- 
 
 585 
        push    ebx                     ; push the mac onto the stack
587 
        push    ax
 586 
        push    ax
588 
 
 587 
 
589 
        call    IPv4_dest_to_dev
 588 
        inc     [IP_PACKETS_TX + edi]   ; update stats
590 
        inc     [IP_PACKETS_TX+edi]
 589 
 
591 
        mov     ebx, [NET_DRV_LIST+edi]
 590 
        mov     ebx, [NET_DRV_LIST + edi]
592 
        lea     eax, [ebx + ETH_DEVICE.mac]
 591 
        lea     eax, [ebx + ETH_DEVICE.mac]
593 
        mov     edx, esp
 592 
        mov     edx, esp
594 
        mov     ecx, [esp + 18]
 593 
        mov     ecx, [esp + 10 + 6]
- 
 
 594 
        add     ecx, sizeof.IPv4_header
Line 595... Line 595...
595 
        add     ecx, sizeof.IPv4_header
 595 
        mov     di, ETHER_IPv4
596 
        mov     di , ETHER_IPv4
 - 
 
597 
        call    ETH_output
 596 
        call    ETH_output
598 
        jz      .eth_error
 597 
        jz      .eth_error
599 
 
 598 
        add     esp, 6                  ; pop the mac out of the stack
600 
        add     esp, 6  ; pop the mac
 599 
 
601 
 
 600 
        xchg    cl, ch                                  ; internet byte order
602 
        mov     [edi + IPv4_header.VersionAndIHL], 0x45 ; IPv4, normal length (no Optional header)
 - 
 
603 
        mov     [edi + IPv4_header.TypeOfService], 0    ; nothing special, just plain ip packet
 601 
        mov     [edi + IPv4_header.VersionAndIHL], 0x45 ; IPv4, normal length (no Optional header)
604 
        mov     [edi + IPv4_header.TotalLength], cx
 602 
        mov     [edi + IPv4_header.TypeOfService], 0    ; nothing special, just plain ip packet
605 
        rol     [edi + IPv4_header.TotalLength], 8      ; internet byte order
 603 
        mov     [edi + IPv4_header.TotalLength], cx
606 
        mov     [edi + IPv4_header.FlagsAndFragmentOffset], 0x0000
 604 
        mov     [edi + IPv4_header.Identification], 0   ; fragment id: FIXME
607 
        mov     [edi + IPv4_header.HeaderChecksum], 0
 605 
        mov     [edi + IPv4_header.FlagsAndFragmentOffset], 0
Line 608... Line 606...
608 
        pop     word [edi + IPv4_header.TimeToLive]     ; ttl shl 8 + protocol
 606 
        pop     word [edi + IPv4_header.TimeToLive]     ; ttl shl 8 + protocol
Line 618... Line 616...
618 
        DEBUGF  1,"IPv4 Packet for device %x created successfully\n", ebx
 616 
        DEBUGF  1,"IPv4 Packet for device %x created successfully\n", ebx
619 
        ret
 617 
        ret
Line 620... Line 618...
620 
 
 618 
 
621 
  .eth_error:
 619 
  .eth_error:
622 
        DEBUGF  1,"IPv4_output: ethernet error\n"
 620 
        DEBUGF  1,"IPv4_output: ethernet error\n"
623 
        add     esp, 3*4+2*2+6
 621 
        add     esp, 3*4+2+6
624 
        sub     edi, edi
 622 
        xor     edi, edi
Line 625... Line 623...
625 
        ret
 623 
        ret
626 
 
 624 
 
627 
  .arp_error:
 625 
  .arp_error:
628 
        DEBUGF  1,"IPv4_output: ARP error (0x%x)\n", eax
 626 
        DEBUGF  1,"IPv4_output: ARP error (0x%x)\n", eax
629 
        add     esp, 4+4+4+2+2
 627 
        add     esp, 3*4+2
Line 630... Line 628...
630 
        sub     edi, edi
 628 
        xor     edi, edi
631 
        ret
 629 
        ret
632 
 
 630 
 
633 
  .too_large:
 631 
  .too_large:
Line 659... Line 657...
659 
        ja      .too_large
 657 
        ja      .too_large
Line 660... Line 658...
660 
 
 658 
 
661 
        sub     esp, 8
 659 
        sub     esp, 8
Line -... Line 660...
- 
 
 660 
        push    esi eax
662 
        push    esi eax
 661 
 
Line 663... Line 662...
663 
 
 662 
        call    IPv4_dest_to_dev
664 
        call    ARP_IP_to_MAC
 663 
        call    ARP_IP_to_MAC
Line 665... Line -...
665 
 
 - 
 
666 
        test    eax, 0xffff0000         ; error bits
 - 
 
667 
        jnz     .arp_error
 664 
 
668 
 
 665 
        test    eax, 0xffff0000         ; error bits
Line 669... Line -...
669 
  .continue:
 - 
 
670 
 
 666 
        jnz     .arp_error
671 
        push    ebx     ; push the mac
 667 
 
672 
        push    ax
 668 
        push    ebx                     ; push the mac
673 
 
 669 
        push    ax
674 
        call    IPv4_dest_to_dev
 670 
 
Line 851... Line 847...
851 
;
 847 
;
852 
; IPv4_dest_to_dev
 848 
; IPv4_dest_to_dev
853 
;
 849 
;
854 
; IN:  eax = Destination IP
 850 
; IN:   eax = Destination IP
855 
; OUT: edi = device id * 4
 851 
; OUT:  edi = device id * 4
- 
 
 852 
;       eax = ip of gateway if nescessary, unchanged otherwise
856 
;
 853 
;
857 
;---------------------------------------------------------------------------
 854 
;---------------------------------------------------------------------------
858 
align 4
 855 
align 4
859 
IPv4_dest_to_dev:
 856 
IPv4_dest_to_dev:
Line 860... Line 857...
860 
 
 857 
 
861 
        cmp     eax, 0xffffffff
 858 
        cmp     eax, 0xffffffff
Line 862... Line 859...
862 
        je      .invalid
 859 
        je      .broadcast
863 
 
 860 
 
864 
        xor     edi, edi
 - 
 
865 
        mov     ecx, MAX_IP
 861 
        xor     edi, edi
866 
 
 862 
        mov     ecx, MAX_IP
867 
  .loop:
 863 
  .loop:
868 
        mov     ebx, [IP_LIST+edi]
 864 
        mov     ebx, [IP_LIST+edi]
869 
        and     ebx, [SUBNET_LIST+edi]
 - 
 
870 
        jz      .next
 865 
        and     ebx, [SUBNET_LIST+edi]
871 
 
 866 
        jz      .next
Line 872... Line 867...
872 
        mov     edx, eax
 867 
        mov     edx, eax
873 
        and     edx, [SUBNET_LIST+edi]
 868 
        and     edx, [SUBNET_LIST+edi]
Line 878... Line 873...
878 
        add     edi, 4
 873 
        add     edi, 4
879 
        dec     ecx
 874 
        dec     ecx
880 
        jnz     .loop
 875 
        jnz     .loop
Line 881... Line 876...
881 
 
 876 
 
882 
  .invalid:
 877 
  .invalid:
- 
 
 878 
        xor     edi, edi                        ; if none found, use device 0 as default
Line 883... Line 879...
883 
        xor     edi, edi                        ; if none found, use device 0 as default device
 879 
        mov     eax, [GATEWAY_LIST]
884 
 
 880 
 
- 
 
 881 
  .found_it:
Line -... Line 882...
- 
 
 882 
        DEBUGF  1,"IPv4_dest_to_dev: %u\n", edi
- 
 
 883 
        ret
885 
  .found_it:
 884 
 
Line 886... Line 885...
886 
        DEBUGF  1,"IPv4_dest_to_dev: %u\n", edi
 885 
  .broadcast: