Subversion Repositories Kolibri OS

        cmp     edi, -1

        cmp     edi, -1

        jz      .exit

        jz      .exit

        DEBUGF  1,"ARP_input: got packet from %u.%u.%u.%u through device %u\n",\

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_input: got packet from %u.%u.%u.%u through device %u\n",\

        [edx + ARP_header.SenderIP]:1, [edx + ARP_header.SenderIP + 1]:1,\

        [edx + ARP_header.SenderIP]:1, [edx + ARP_header.SenderIP + 1]:1,\

        [edx + ARP_header.SenderIP + 2]:1, [edx + ARP_header.SenderIP + 3]:1, edi

        [edx + ARP_header.SenderIP + 2]:1, [edx + ARP_header.SenderIP + 3]:1, edi

; Handle reply packets

; Handle reply packets

        cmp     [edx + ARP_header.Opcode], ARP_REP_OPCODE

        cmp     [edx + ARP_header.Opcode], ARP_REP_OPCODE

        DEBUGF  1,"ARP_input: It's a reply\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_input: It's a reply\n"

        je      .gotit

        je      .gotit

        add     esi, sizeof.ARP_entry

        add     esi, sizeof.ARP_entry

        dec     ecx

        dec     ecx

        jnz     .loop

        jnz     .loop

        DEBUGF  1,"ARP_input: no matching entry found\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_input: no matching entry found\n"

        jmp     .exit

        jmp     .exit

  .gotit:

  .gotit:

        DEBUGF  1,"ARP_input: found matching entry\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_input: found matching entry\n"

        cmp     [esi + ARP_entry.TTL], ARP_STATIC_ENTRY         ; if it is a static entry, dont touch it

        cmp     [esi + ARP_entry.TTL], ARP_STATIC_ENTRY         ; if it is a static entry, dont touch it

        je      .exit

        je      .exit

  .maybe_request:

  .maybe_request:

        cmp     [edx + ARP_header.Opcode], ARP_REQ_OPCODE

        cmp     [edx + ARP_header.Opcode], ARP_REQ_OPCODE

        DEBUGF  1,"ARP_input: its a request\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_input: its a request\n"

        movsd

        movsd

        movsw

        movsw

;        mov     ax , ETHER_ARP                                 ; It's already there, I'm sure of it!

;        mov     ax , ETHER_ARP                                 ; It's already there, I'm sure of it!

;        stosw

;        stosw

        DEBUGF  1,"ARP_input: Sending reply\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_input: Sending reply\n"

        call    [ebx + NET_DEVICE.transmit]

        call    [ebx + NET_DEVICE.transmit]

        ret

        ret

  .collision:

  .collision:

        inc     [ARP_CONFLICTS + 4*edi]

        inc     [ARP_CONFLICTS + 4*edi]

        DEBUGF  1,"ARP_input: IP address conflict detected!\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_input: IP address conflict detected!\n"

  .exit:

  .exit:

        call    kernel_free

        call    kernel_free

        add     esp, 4                                          ; pop (balance stack)

        add     esp, 4                                          ; pop (balance stack)

        push    eax                             ; DestIP

        push    eax                             ; DestIP

        pushd   [IP_LIST + edi]                 ; SenderIP

        pushd   [IP_LIST + edi]                 ; SenderIP

        DEBUGF  1,"ARP_output_request: ip=%u.%u.%u.%u\n",\

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_output_request: ip=%u.%u.%u.%u\n",\

        [esp + 4]:1, [esp + 5]:1, [esp + 6]:1, [esp + 7]:1

        [esp + 4]:1, [esp + 5]:1, [esp + 6]:1, [esp + 7]:1

        stosd                                   ;

        stosd                                   ;

        stosw                                   ;

        stosw                                   ;

        pop     eax                             ; DestIP

        pop     eax                             ; DestIP

        stosd                                   ;

        stosd                                   ;

        DEBUGF  1,"ARP_output_request: device=%x\n", ebx

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_output_request: device=%x\n", ebx

        push    edx ecx

        push    edx ecx

        call    [ebx + NET_DEVICE.transmit]

        call    [ebx + NET_DEVICE.transmit]

        ret

        ret

  .exit:

  .exit:

        add     esp, 4 + 4

        add     esp, 4 + 4

        DEBUGF  1,"ARP_output_request: failed\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_output_request: failed\n"

;

;

;-----------------------------------------------------------------      ; TODO: use a mutex

;-----------------------------------------------------------------      ; TODO: use a mutex

align 4

align 4

ARP_add_entry:

ARP_add_entry:

        DEBUGF  1,"ARP_add_entry: "

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_add_entry: "

        mov     ecx, [NumARP]

        mov     ecx, [NumARP]

  .add:

  .add:

        mov     ecx, sizeof.ARP_entry/2

        mov     ecx, sizeof.ARP_entry/2

        rep     movsw

        rep     movsw

        inc     [NumARP]

        inc     [NumARP]

        sub     edi, sizeof.ARP_entry

        sub     edi, sizeof.ARP_entry

        ret

        ret

  .error:

  .error:

        DEBUGF  1,"failed\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "failed\n"

        mov     eax, -1

        mov     eax, -1

;

;

;-----------------------------------------------------------------

;-----------------------------------------------------------------

align 4

align 4

ARP_del_entry:

ARP_del_entry:

        DEBUGF 1,"ARP_del_entry: IP=%u.%u.%u.%u\n", \

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_del_entry: IP=%u.%u.%u.%u\n", \

        [esi + ARP_entry.IP]:1, [esi + ARP_entry.IP + 1]:1, [esi + ARP_entry.IP + 2]:1, [esi + ARP_entry.IP + 3]:1

        [esi + ARP_entry.IP]:1, [esi + ARP_entry.IP + 1]:1, [esi + ARP_entry.IP + 2]:1, [esi + ARP_entry.IP + 3]:1

        mov     ecx, ARP_table + (ARP_TABLE_SIZE - 1) * sizeof.ARP_entry

        mov     ecx, ARP_table + (ARP_TABLE_SIZE - 1) * sizeof.ARP_entry

        xor     eax, eax

        xor     eax, eax

        mov     ecx, sizeof.ARP_entry/2

        mov     ecx, sizeof.ARP_entry/2

        rep     stosw

        rep     stosw

        DEBUGF 1,"ARP_del_entry: success\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_del_entry: success\n"

;

;

;-----------------------------------------------------------------

;-----------------------------------------------------------------

align 4

align 4

ARP_IP_to_MAC:

ARP_IP_to_MAC:

        DEBUGF 1,"ARP_IP_to_MAC: %u.%u", al, ah

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_IP_to_MAC: %u.%u", al, ah

        DEBUGF 1,".%u.%u\n", al, ah

        DEBUGF  DEBUG_NETWORK_VERBOSE, ".%u.%u\n", al, ah

        rol     eax, 16

        rol     eax, 16

        je      .found_it

        je      .found_it

        add     esi, sizeof.ARP_entry

        add     esi, sizeof.ARP_entry

        loop    .scan_loop

        loop    .scan_loop

        DEBUGF  1,"ARP_IP_to_MAC: preparing for ARP request\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_IP_to_MAC: preparing for ARP request\n"

;--------------------

;--------------------

        jmp     .give_up

        jmp     .give_up

end if

end if

  .valid:

  .valid:

        DEBUGF  1,"ARP_IP_to_MAC: found MAC\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_IP_to_MAC: found MAC\n"

        movzx   eax, word[esi + ARP_entry.MAC]

        movzx   eax, word[esi + ARP_entry.MAC]

        mov     ebx, dword[esi + ARP_entry.MAC + 2]

        mov     ebx, dword[esi + ARP_entry.MAC + 2]

  .full:

  .full:

        add     esp, 8

        add     esp, 8

  .give_up:

  .give_up:

        DEBUGF  1,"ARP_IP_to_MAC: entry has no valid mapping!\n"

        DEBUGF  DEBUG_NETWORK_VERBOSE, "ARP_IP_to_MAC: entry has no valid mapping!\n"

        mov     eax, -1

        mov     eax, -1