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Rev 5363 Rev 5442
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;;          GNU GENERAL PUBLIC LICENSE                             ;;
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;;          GNU GENERAL PUBLIC LICENSE                             ;;
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;;             Version 2, June 1991                                ;;
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;;             Version 2, June 1991                                ;;
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;;                                                                 ;;
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;;                                                                 ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 5363 $
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$Revision: 5442 $
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;-----------------------------------------------------------------
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;-----------------------------------------------------------------
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;
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;
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        mov     eax, [timestamp]
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        mov     eax, [timestamp]
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        sub     eax, [ebx + TCP_SOCKET.ts_recent_age]
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        sub     eax, [ebx + TCP_SOCKET.ts_recent_age]
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        pop     ecx
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        pop     ecx
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        cmp     eax, TCP_PAWS_IDLE
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        cmp     eax, TCP_PAWS_IDLE
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        jle     .drop_after_ack                         ; TODO: update stats
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        jle     .paws_drop
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        push    ecx
 - 
 
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        push    ecx
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        mov     [ebx + TCP_SOCKET.ts_recent], 0         ; timestamp was invalid, fix it.
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        mov     [ebx + TCP_SOCKET.ts_recent], 0         ; timestamp was invalid, fix it.
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  .no_paws:
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  .no_paws:
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        jmp     .opt_loop
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  .paws_drop:
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        inc     [TCPS_rcvduppack]                       ; update stats
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        add     [TCPS_rcvdupbyte], ecx
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        inc     [TCPS_pawsdrop]
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        jmp     .opt_loop
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        jmp     .drop_after_ack
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  .no_options:
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  .no_options:
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; send an ACK and resynchronize and drop any data.
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; send an ACK and resynchronize and drop any data.
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; But keep on processing for RST or ACK
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; But keep on processing for RST or ACK
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        or      [ebx + TCP_SOCKET.t_flags], TF_ACKNOW
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        or      [ebx + TCP_SOCKET.t_flags], TF_ACKNOW
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        mov     eax, ecx
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        mov     eax, ecx
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        inc     [TCPS_rcvpartduppack]
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;;; TODO: update stats
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;;; TODO: update stats
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        test    ecx, ecx
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        test    ecx, ecx
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        jz      .not_terminated
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        jz      .not_terminated
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        mov     eax, ebx
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        mov     eax, ebx
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        call    TCP_close
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        call    TCP_close
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;;; TODO: update stats
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        inc     [TCPS_rcvafterclose]
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        jmp     .respond_seg_reset
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        jmp     .respond_seg_reset
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        mov     [ebx + TCP_SOCKET.t_dupacks], 0
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        mov     [ebx + TCP_SOCKET.t_dupacks], 0
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        mov     eax, [edx + TCP_header.AckNumber]
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        mov     eax, [edx + TCP_header.AckNumber]
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        cmp     eax, [ebx + TCP_SOCKET.SND_MAX]
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        cmp     eax, [ebx + TCP_SOCKET.SND_MAX]
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        jbe     @f
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        jbe     @f
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        ;;; TODO: update stats
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        inc     [TCPS_rcvacktoomuch]
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        jmp     .drop_after_ack
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        jmp     .drop_after_ack
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       @@:
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       @@:
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        mov     edi, [edx + TCP_header.AckNumber]
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        sub     edi, [ebx + TCP_SOCKET.SND_UNA]         ; now we got the number of acked bytes in edi
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        mov     edi, [edx + TCP_header.AckNumber]
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        sub     edi, [ebx + TCP_SOCKET.SND_UNA]         ; now we got the number of acked bytes in edi
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        ;;; TODO: update stats
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        inc     [TCPS_rcvackpack]
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        add     [TCPS_rcvackbyte], edi
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        DEBUGF  DEBUG_NETWORK_VERBOSE, "TCP_input: acceptable ACK for %u bytes\n", edi
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        DEBUGF  DEBUG_NETWORK_VERBOSE, "TCP_input: acceptable ACK for %u bytes\n", edi
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        jnz     .drop_with_reset
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        jnz     .drop_with_reset
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        test    [edx + TCP_header.Flags], TH_SYN
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        test    [edx + TCP_header.Flags], TH_SYN
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        jz      .drop
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        jz      .drop
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        inc     [TCPS_accepts]                          ; update stats
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;;; TODO: check if it's a broadcast or multicast, and drop if so
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;;; TODO: check if it's a broadcast or multicast, and drop if so