forked from KolibriOS/kolibrios
1dd8c78cbd
* Splitted TCP code into multiple files * cleanup git-svn-id: svn://kolibrios.org@1733 a494cfbc-eb01-0410-851d-a64ba20cac60
166 lines
4.7 KiB
PHP
166 lines
4.7 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2010. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; TCP.INC ;;
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;; ;;
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;; Part of the tcp/ip network stack for KolibriOS ;;
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;; ;;
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;; Written by hidnplayr@kolibrios.org ;;
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;; ;;
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;; Based on the code of 4.4BSD ;;
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;; ;;
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;; GNU GENERAL PUBLIC LICENSE ;;
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;; Version 2, June 1991 ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision$
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; Socket states
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TCB_CLOSED equ 0
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TCB_LISTEN equ 1
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TCB_SYN_SENT equ 2
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TCB_SYN_RECEIVED equ 3
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TCB_ESTABLISHED equ 4
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TCB_CLOSE_WAIT equ 5
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TCB_FIN_WAIT_1 equ 6
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TCB_CLOSING equ 7
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TCB_LAST_ACK equ 8
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TCB_FIN_WAIT_2 equ 9
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TCB_TIMED_WAIT equ 10
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; Socket Flags
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TF_ACKNOW equ 1 shl 0 ; ack peer immediately
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TF_DELACK equ 1 shl 1 ; ack, but try to delay it
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TF_NODELAY equ 1 shl 2 ; don't delay packets to coalesce
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TF_NOOPT equ 1 shl 3 ; don't use tcp options
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TF_SENTFIN equ 1 shl 4 ; have sent FIN
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TF_REQ_SCALE equ 1 shl 5 ; have/will request window scaling
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TF_RCVD_SCALE equ 1 shl 6 ; other side has requested scaling
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TF_REQ_TSTMP equ 1 shl 7 ; have/will request timestamps
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TF_RCVD_TSTMP equ 1 shl 8 ; a timestamp was received in SYN
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TF_SACK_PERMIT equ 1 shl 9 ; other side said I could SACK
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; Segment flags
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TH_FIN equ 1 shl 0
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TH_SYN equ 1 shl 1
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TH_RST equ 1 shl 2
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TH_PUSH equ 1 shl 3
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TH_ACK equ 1 shl 4
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TH_URG equ 1 shl 5
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; Segment header options
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TCP_OPT_EOL equ 0 ; End of option list.
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TCP_OPT_NOP equ 1 ; No-Operation.
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TCP_OPT_MAXSEG equ 2 ; Maximum Segment Size.
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TCP_OPT_WINDOW equ 3 ; window scale
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TCP_OPT_TIMESTAMP equ 8
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; Fundamental timer values
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TCP_time_MSL equ 47 ; max segment lifetime (30s)
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TCP_time_re_min equ 2 ; min retransmission (1,28s)
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TCP_time_re_max equ 100 ; max retransmission (64s)
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TCP_time_pers_min equ 8 ; min persist (5,12s)
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TCP_time_pers_max equ 94 ; max persist (60,16s)
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TCP_time_keep_init equ 118 ; connectione stablishment (75,52s)
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TCP_time_keep_idle equ 4608 ; idle time before 1st probe (2h)
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TCP_time_keep_interval equ 118 ; between probes when no response (75,52s)
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TCP_time_rtt_default equ 5 ; default Round Trip Time (3,2s)
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; timer constants
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TCP_max_rxtshift equ 12 ; max retransmissions waiting for ACK
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TCP_max_keepcnt equ 8 ; max keepalive probes
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;
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TCP_max_winshift equ 14
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TCP_max_win equ 65535
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struct TCP_segment
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.SourcePort dw ?
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.DestinationPort dw ?
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.SequenceNumber dd ?
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.AckNumber dd ?
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.DataOffset db ? ; DataOffset[0-3 bits] and Reserved[4-7]
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.Flags db ? ; Reserved[0-1 bits]|URG|ACK|PSH|RST|SYN|FIN
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.Window dw ?
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.Checksum dw ?
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.UrgentPointer dw ?
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.Data: ; ..or options
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ends
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align 4
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uglobal
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TCP_segments_tx rd IP_MAX_INTERFACES
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TCP_segments_rx rd IP_MAX_INTERFACES
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TCP_bytes_rx rq IP_MAX_INTERFACES
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TCP_bytes_tx rq IP_MAX_INTERFACES
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TCP_sequence_num dd ?
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endg
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;-----------------------------------------------------------------
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;
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; TCP_init
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;
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; This function resets all TCP variables
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;
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;-----------------------------------------------------------------
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macro TCP_init {
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xor eax, eax
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mov edi, TCP_segments_tx
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mov ecx, (6*IP_MAX_INTERFACES)
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rep stosd
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pseudo_random eax
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mov [TCP_sequence_num], eax
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}
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include 'tcp_timer.inc'
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include 'tcp_subr.inc'
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include 'tcp_input.inc'
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include 'tcp_output.inc'
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;---------------------------------------------------------------------------
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;
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; TCP_API
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;
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; This function is called by system function 75
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;
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; IN: subfunction number in bl
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; device number in bh
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; ecx, edx, .. depends on subfunction
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;
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; OUT:
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;
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;---------------------------------------------------------------------------
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align 4
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TCP_API:
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movzx eax, bh
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shl eax, 2
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test bl, bl
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jz .packets_tx ; 0
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dec bl
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jz .packets_rx ; 1
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.error:
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mov eax, -1
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ret
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.packets_tx:
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add eax, TCP_segments_tx
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mov eax, [eax]
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ret
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.packets_rx:
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add eax, TCP_segments_rx
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mov eax, [eax]
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ret
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