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1763 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;; Part of the tcp/ip network stack for KolibriOS ;; |
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7 | ;; ;; |
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8 | ;; Written by hidnplayr@kolibrios.org ;; |
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9 | ;; ;; |
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10 | ;; Based on the code of 4.4BSD ;; |
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11 | ;; ;; |
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12 | ;; GNU GENERAL PUBLIC LICENSE ;; |
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13 | ;; Version 2, June 1991 ;; |
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14 | ;; ;; |
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15 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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1733 | hidnplayr | 16 | |
1763 | hidnplayr | 17 | $Revision: 2879 $ |
18 | |||
1733 | hidnplayr | 19 | ;---------------------- |
20 | ; 160 ms timer |
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21 | ;---------------------- |
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2879 | hidnplayr | 22 | macro TCP_timer_160ms { |
1733 | hidnplayr | 23 | |
2879 | hidnplayr | 24 | local .loop |
25 | local .exit |
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1733 | hidnplayr | 26 | |
2879 | hidnplayr | 27 | mov ebx, net_sockets |
1733 | hidnplayr | 28 | .loop: |
2879 | hidnplayr | 29 | mov ebx, [ebx + SOCKET.NextPtr] |
30 | or ebx, ebx |
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31 | jz .exit |
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1733 | hidnplayr | 32 | |
2879 | hidnplayr | 33 | cmp [ebx + SOCKET.Domain], AF_INET4 |
34 | jne .loop |
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1733 | hidnplayr | 35 | |
2879 | hidnplayr | 36 | cmp [ebx + SOCKET.Protocol], IP_PROTO_TCP |
37 | jne .loop |
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1733 | hidnplayr | 38 | |
2879 | hidnplayr | 39 | test [ebx + TCP_SOCKET.t_flags], TF_DELACK |
40 | jz .loop |
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41 | and [ebx + TCP_SOCKET.t_flags], not (TF_DELACK) |
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1733 | hidnplayr | 42 | |
2879 | hidnplayr | 43 | push ebx |
44 | mov cl, TH_ACK |
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45 | call TCP_respond_socket |
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46 | pop ebx |
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1733 | hidnplayr | 47 | |
2879 | hidnplayr | 48 | jmp .loop |
1733 | hidnplayr | 49 | |
50 | .exit: |
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51 | |||
52 | } |
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53 | |||
54 | |||
55 | ;---------------------- |
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56 | ; 640 ms timer |
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57 | ;---------------------- |
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2879 | hidnplayr | 58 | macro TCP_timer_640ms { |
1733 | hidnplayr | 59 | |
2879 | hidnplayr | 60 | local .loop |
61 | local .exit |
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1733 | hidnplayr | 62 | |
63 | ; Update TCP sequence number |
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64 | |||
2879 | hidnplayr | 65 | add [TCP_sequence_num], 64000 |
1733 | hidnplayr | 66 | |
67 | ; scan through all the active TCP sockets, decrementing ALL timers |
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68 | ; timers do not have the chance to wrap because the keepalive timer will kill the socket when it expires |
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69 | |||
2879 | hidnplayr | 70 | mov eax, net_sockets |
1733 | hidnplayr | 71 | .loop: |
2879 | hidnplayr | 72 | mov eax, [eax + SOCKET.NextPtr] |
1733 | hidnplayr | 73 | .check_only: |
2879 | hidnplayr | 74 | or eax, eax |
75 | jz .exit |
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1733 | hidnplayr | 76 | |
2879 | hidnplayr | 77 | cmp [eax + SOCKET.Domain], AF_INET4 |
78 | jne .loop |
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1733 | hidnplayr | 79 | |
2879 | hidnplayr | 80 | cmp [eax + SOCKET.Protocol], IP_PROTO_TCP |
81 | jne .loop |
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1733 | hidnplayr | 82 | |
2879 | hidnplayr | 83 | inc [eax + TCP_SOCKET.t_idle] |
84 | dec [eax + TCP_SOCKET.timer_retransmission] |
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85 | jnz .check_more2 |
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1733 | hidnplayr | 86 | |
2879 | hidnplayr | 87 | DEBUGF 1,"socket %x: Retransmission timer expired\n", eax |
1733 | hidnplayr | 88 | |
2879 | hidnplayr | 89 | push eax |
90 | call TCP_output |
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91 | pop eax |
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1733 | hidnplayr | 92 | |
93 | .check_more2: |
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2879 | hidnplayr | 94 | dec [eax + TCP_SOCKET.timer_keepalive] |
95 | jnz .check_more3 |
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1733 | hidnplayr | 96 | |
2879 | hidnplayr | 97 | DEBUGF 1,"socket %x: Keepalive expired\n", eax |
1733 | hidnplayr | 98 | |
2879 | hidnplayr | 99 | call TCP_disconnect |
100 | jmp .loop |
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1733 | hidnplayr | 101 | |
102 | .check_more3: |
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2879 | hidnplayr | 103 | dec [eax + TCP_SOCKET.timer_timed_wait] |
104 | jnz .check_more5 |
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1733 | hidnplayr | 105 | |
2879 | hidnplayr | 106 | DEBUGF 1,"socket %x: 2MSL timer expired\n", eax |
1733 | hidnplayr | 107 | |
108 | .check_more5: |
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2879 | hidnplayr | 109 | dec [eax + TCP_SOCKET.timer_persist] |
110 | jnz .loop |
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1733 | hidnplayr | 111 | |
2879 | hidnplayr | 112 | DEBUGF 1,"socket %x: persist timer expired\n", eax |
1733 | hidnplayr | 113 | |
2879 | hidnplayr | 114 | jmp .loop |
1733 | hidnplayr | 115 | .exit: |
116 | |||
1773 | hidnplayr | 117 | } |
118 | |||
119 | |||
120 | |||
121 | ; eax = socket |
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122 | |||
123 | TCP_cancel_timers: |
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124 | |||
2879 | hidnplayr | 125 | push eax edi |
1773 | hidnplayr | 126 | |
2879 | hidnplayr | 127 | lea edi, [eax + TCP_SOCKET.timer_retransmission] |
128 | xor eax, eax |
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129 | stosd |
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130 | stosd |
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131 | stosd |
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132 | stosd |
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133 | stosd |
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1773 | hidnplayr | 134 | |
2879 | hidnplayr | 135 | pop edi eax |
1773 | hidnplayr | 136 | |
137 | |||
2879 | hidnplayr | 138 | ret |