forked from KolibriOS/kolibrios
191 lines
5.7 KiB
PHP
191 lines
5.7 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2017. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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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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timer_flag_retransmission = 1 shl 0
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timer_flag_keepalive = 1 shl 1
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timer_flag_2msl = 1 shl 2
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timer_flag_persist = 1 shl 3
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timer_flag_wait = 1 shl 4
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macro tcp_timer_160ms {
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local .loop
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local .exit
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mov ebx, net_sockets
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.loop:
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mov ebx, [ebx + SOCKET.NextPtr]
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test ebx, ebx
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jz .exit
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cmp [ebx + SOCKET.Domain], AF_INET4
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jne .loop
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cmp [ebx + SOCKET.Protocol], IP_PROTO_TCP
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jne .loop
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test [ebx + TCP_SOCKET.t_flags], TF_DELACK
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jz .loop
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and [ebx + TCP_SOCKET.t_flags], not (TF_DELACK)
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push ebx
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mov cl, TH_ACK
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call tcp_respond
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pop ebx
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inc [TCPS_delack] ; update stats
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jmp .loop
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.exit:
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}
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align 4
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proc tcp_timer_640ms
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xor esi, esi
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mov ecx, MANUAL_DESTROY
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call create_event
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mov [TCP_timer1_event], eax
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.wait:
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mov eax, [TCP_timer1_event]
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mov ebx, [eax + EVENT.id]
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call wait_event
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; Update TCP sequence number
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add [TCP_sequence_num], 64000
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; Scan through all the active TCP sockets, decrementing all active timers
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; When a timer reaches zero, run its handler.
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mov eax, net_sockets
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.loop:
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mov eax, [eax + SOCKET.NextPtr]
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.check_only:
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or eax, eax
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jz .wait
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cmp [eax + SOCKET.Domain], AF_INET4
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jne .loop
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cmp [eax + SOCKET.Protocol], IP_PROTO_TCP
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jne .loop
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inc [eax + TCP_SOCKET.t_idle]
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test [eax + TCP_SOCKET.timer_flags], timer_flag_retransmission
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jz .check_more2
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dec [eax + TCP_SOCKET.timer_retransmission]
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jnz .check_more2
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DEBUGF DEBUG_NETWORK_VERBOSE, "socket %x: Retransmission timer expired\n", eax
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push eax
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call tcp_output
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pop eax
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.check_more2:
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test [eax + TCP_SOCKET.timer_flags], timer_flag_keepalive
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jz .check_more3
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dec [eax + TCP_SOCKET.timer_keepalive]
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jnz .check_more3
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DEBUGF DEBUG_NETWORK_VERBOSE, "socket %x: Keepalive expired\n", eax
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cmp [eax + TCP_SOCKET.state], TCPS_ESTABLISHED
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ja .dont_kill
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push eax
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call tcp_disconnect
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pop eax
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jmp .loop
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.dont_kill:
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test [eax + SOCKET.options], SO_KEEPALIVE
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jz .reset_keepalive
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push eax
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mov ebx, eax
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xor cl, cl
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call tcp_respond ; send keepalive
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pop eax
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mov [eax + TCP_SOCKET.timer_keepalive], TCP_time_keep_interval
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jmp .check_more3
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.reset_keepalive:
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mov [eax + TCP_SOCKET.timer_keepalive], TCP_time_keep_idle
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.check_more3:
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test [eax + TCP_SOCKET.timer_flags], timer_flag_2msl
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jz .check_more5
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dec [eax + TCP_SOCKET.timer_timed_wait]
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jnz .check_more5
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DEBUGF DEBUG_NETWORK_VERBOSE, "socket %x: 2MSL timer expired\n", eax
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.check_more5:
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test [eax + TCP_SOCKET.timer_flags], timer_flag_persist
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jz .check_more6
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dec [eax + TCP_SOCKET.timer_persist]
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jnz .check_more6
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DEBUGF DEBUG_NETWORK_VERBOSE, "socket %x: persist timer expired\n", eax
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call tcp_set_persist
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or [eax + TCP_SOCKET.t_flags], TF_FORCE
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push eax
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call tcp_output
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pop eax
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and [eax + TCP_SOCKET.t_flags], not TF_FORCE
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.check_more6:
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test [eax + TCP_SOCKET.timer_flags], timer_flag_wait
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jz .loop
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dec [eax + TCP_SOCKET.timer_timed_wait]
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jnz .loop
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DEBUGF DEBUG_NETWORK_VERBOSE, "socket %x: timed wait timer expired\n", eax
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push [eax + SOCKET.NextPtr]
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call tcp_close
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pop eax
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jmp .check_only
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endp
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;-----------------------------------------------------------------;
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; ;
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; TCP_cancel_timers ;
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; ;
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; IN: eax = socket ;
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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_cancel_timers:
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mov [eax + TCP_SOCKET.timer_flags], 0
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ret |