WebSVN – Kolibri OS – Diff – /kernel/trunk/network/tcp.inc


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;;                                                                 ;;
;; Copyright (C) KolibriOS team 2004-2017. All rights reserved.    ;;
;; Distributed under terms of the GNU General Public License       ;;
;;                                                                 ;;
;;  Part of the TCP/IP network stack for KolibriOS                 ;;
;;                                                                 ;;
;;   Written by hidnplayr@kolibrios.org                            ;;
;;                                                                 ;;
;;    Based on the code of 4.4BSD                                  ;;
;;                                                                 ;;
;;          GNU GENERAL PUBLIC LICENSE                             ;;
;;             Version 2, June 1991                                ;;
;;                                                                 ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
$Revision: 6916 $
 
; Socket states
TCPS_CLOSED             = 0
TCPS_LISTEN             = 1
TCPS_SYN_SENT           = 2
TCPS_SYN_RECEIVED       = 3
TCPS_ESTABLISHED        = 4
TCPS_CLOSE_WAIT         = 5
TCPS_FIN_WAIT_1         = 6
TCPS_CLOSING            = 7
TCPS_LAST_ACK           = 8
TCPS_FIN_WAIT_2         = 9
TCPS_TIME_WAIT          = 10
 
; Socket Flags
TF_ACKNOW               = 1 shl 0     ; ack peer immediately
TF_DELACK               = 1 shl 1     ; ack, but try to delay it
TF_NODELAY              = 1 shl 2     ; don't delay packets to coalesce
TF_NOOPT                = 1 shl 3     ; don't use tcp options
TF_SENTFIN              = 1 shl 4     ; have sent FIN
TF_REQ_SCALE            = 1 shl 5     ; have/will request window scaling
TF_RCVD_SCALE           = 1 shl 6     ; other side has requested scaling
TF_REQ_TSTMP            = 1 shl 7     ; have/will request timestamps
TF_RCVD_TSTMP           = 1 shl 8     ; a timestamp was received in SYN
TF_SACK_PERMIT          = 1 shl 9     ; other side said I could SACK
 
TF_FORCE                = 1 shl 16    ; force to send a segment
 
; Segment flags
TH_FIN                  = 1 shl 0
TH_SYN                  = 1 shl 1
TH_RST                  = 1 shl 2
TH_PUSH                 = 1 shl 3
TH_ACK                  = 1 shl 4
TH_URG                  = 1 shl 5
 
; Segment header options
TCP_OPT_EOL             = 0           ; End of option list.
TCP_OPT_NOP             = 1           ; No-Operation.
TCP_OPT_MAXSEG          = 2           ; Maximum Segment Size.
TCP_OPT_WINDOW          = 3           ; window scale
TCP_OPT_SACK_PERMIT     = 4           ; Selective Acknowledgement
TCP_OPT_SACK            = 5
TCP_OPT_TIMESTAMP       = 8
 
; Fundamental timer values
TCP_time_MSL            = 47          ; max segment lifetime (30s)
TCP_time_re_min         = 2           ; min retransmission (1,28s)
TCP_time_re_max         = 100         ; max retransmission (64s)
TCP_time_pers_min       = 8           ; min persist (5,12s)
TCP_time_pers_max       = 94          ; max persist (60,16s)
TCP_time_keep_init      = 118         ; connection establishment (75,52s)
TCP_time_keep_idle      = 4608        ; idle time before 1st probe (2h)
TCP_time_keep_interval  = 118         ; between probes when no response (75,52s)
TCP_time_rtt_default    = 5           ; default Round Trip Time (3,2s)
TCP_time_srtt_default   = 0           ;
TCP_time_max_idle       = 8*TCP_time_keep_interval      ; FIXME
 
TCP_time_connect        = 300         ; in 1/100s (default=3s)
 
; timer constants
TCP_max_rxtshift        = 12          ; max retransmissions waiting for ACK
TCP_max_keepcnt         = 8           ; max keepalive probes
 
;
TCP_max_winshift        = 14
TCP_max_win             = 65535
 
TCP_re_xmit_thresh      = 3
 
TCP_mss_default         = 1480        ; default max segment size
 
; smoothed round trip time and estimated variance are stored as fixed point numbers,
; shifted by the value below.
; With these scales, srtt has 3 bits to the right of the binary point, and thus an "alpha"
; of .875. rttvar has 2 bits to the right and thus "alpha" of 0.75
TCP_RTT_SHIFT           = 3
TCP_RTTVAR_SHIFT        = 2
 
TCP_PAWS_IDLE           = 24*24*60*60*100       ; 24 days, in 1/100 seconds
 
TCP_QUEUE_SIZE          = 50
 
TCP_ISSINCR             = 128000
 
struct  TCP_header
 
        SourcePort              dw ?
        DestinationPort         dw ?
        SequenceNumber          dd ?
        AckNumber               dd ?
        DataOffset              db ?    ; DataOffset[0-3 bits] and Reserved[4-7]
        Flags                   db ?    ; Reserved[0-1 bits]|URG|ACK|PSH|RST|SYN|FIN
        Window                  dw ?
        Checksum                dw ?
        UrgentPointer           dw ?
 
ends
 
struct  TCP_queue_entry
 
        ip_ptr                  dd ?
        segment_ptr             dd ?
        segment_size            dd ?
        device_ptr              dd ?
        timestamp               dd ?
        buffer_ptr              dd ?
 
ends
 
uglobal
align 4
 
        TCP_segments_tx         rd NET_DEVICES_MAX
        TCP_segments_rx         rd NET_DEVICES_MAX
        TCP_segments_missed     rd NET_DEVICES_MAX
        TCP_segments_dumped     rd NET_DEVICES_MAX
;        TCP_bytes_rx            rq NET_DEVICES_MAX
;        TCP_bytes_tx            rq NET_DEVICES_MAX
        TCP_sequence_num        dd ?
        TCP_queue               rd (TCP_QUEUE_SIZE*sizeof.TCP_queue_entry + sizeof.queue)/4
        TCP_input_event         dd ?
        TCP_timer1_event        dd ?
endg
 
uglobal
align 4
 
        TCPS_accepts            dd ?    ; #SYNs received in LISTEN state
        TCPS_closed             dd ?    ; #connections closed (includes drops)
        TCPS_connattempt        dd ?    ; #connections initiated (calls to connect)
        TCPS_conndrops          dd ?    ; #embryonic connections dropped (before SYN received)
        TCPS_connects           dd ?    ; #connections established actively or passively
        TCPS_delack             dd ?    ; #delayed ACKs sent
        TCPS_drops              dd ?    ; #connections dropped (after SYN received)
        TCPS_keepdrops          dd ?    ; #connections dropped in keepalive (established or awaiting SYN)
        TCPS_keepprobe          dd ?    ; #keepalive probes sent
        TCPS_keeptimeo          dd ?    ; #times keepalive timer or connections-establishment timer expire
        TCPS_pawsdrop           dd ?    ; #segments dropped due to PAWS
        TCPS_pcbcachemiss       dd ?    ; #times PCB cache comparison fails
        TCPS_persisttimeo       dd ?    ; #times persist timer expires
        TCPS_predack            dd ?    ; #times header prediction correct for ACKs
        TCPS_preddat            dd ?    ; #times header prediction correct for data packets
        TCPS_rcvackbyte         dd ?    ; #bytes ACKed by received ACKs
        TCPS_rcvackpack         dd ?    ; #received ACK packets
        TCPS_rcvacktoomuch      dd ?    ; #received ACKs for unsent data
        TCPS_rcvafterclose      dd ?    ; #packets received after connection closed
        TCPS_rcvbadoff          dd ?    ; #packets received with invalid header length
        TCPS_rcvbadsum          dd ?    ; #packets received with checksum errors
        TCPS_rcvbyte            dd ?    ; #bytes received in sequence
        TCPS_rcvbyteafterwin    dd ?    ; #bytes received beyond advertised window
        TCPS_rcvdupack          dd ?    ; #duplicate ACKs received
        TCPS_rcvdupbyte         dd ?    ; #bytes receivedin completely duplicate packets
        TCPS_rcvduppack         dd ?    ; #packets received with completely duplicate bytes
        TCPS_rcvoobyte          dd ?    ; #out-of-order bytes received
        TCPS_rcvoopack          dd ?    ; #out-of-order packets received
        TCPS_rcvpack            dd ?    ; #packets received in sequence
        TCPS_rcvpackafterwin    dd ?    ; #packets with some data beyond advertised window
        TCPS_rcvpartdupbyte     dd ?    ; #duplicate bytes in part-duplicate packets
        TCPS_rcvpartduppack     dd ?    ; #packets with some duplicate data
        TCPS_rcvshort           dd ?    ; #packets received too short
        TCPS_rcvtotal           dd ?    ; #total packets received
        TCPS_rcvwinprobe        dd ?    ; #window probe packets received
        TCPS_rcvwinupd          dd ?    ; #received window update packets
        TCPS_rexmttimeo         dd ?    ; #retransmission timeouts
        TCPS_rttupdated         dd ?    ; #times RTT estimators updated
        TCPS_segstimed          dd ?    ; #segments for which TCP tried to measure RTT
        TCPS_sndacks            dd ?    ; #ACK-only packets sent (data length = 0)
        TCPS_sndbyte            dd ?    ; #data bytes sent
        TCPS_sndctrl            dd ?    ; #control (SYN, FIN, RST) packets sent (data length = 0)
        TCPS_sndpack            dd ?    ; #data packets sent (data length > 0)
        TCPS_sndprobe           dd ?    ; #window probes sent (1 byte of data forced by persist timer)
        TCPS_sndrexmitbyte      dd ?    ; #data bytes retransmitted
        TCPS_sndrexmitpack      dd ?    ; #data packets retransmitted
        TCPS_sndtotal           dd ?    ; total #packets sent
        TCPS_sndurg             dd ?    ; #packets sent with URG-only (data length=0)
        TCPS_sndwinup           dd ?    ; #window update-only packets sent (data length=0)
        TCPS_timeoutdrop        dd ?    ; #connections dropped in retransmission timeout
 
endg
 
 
;-----------------------------------------------------------------;
;                                                                 ;
; TCP_init: Resets all TCP variables.                             ;
;                                                                 ;
;-----------------------------------------------------------------;
macro   tcp_init {
 
        xor     eax, eax
        mov     edi, TCP_segments_tx
        mov     ecx, (6*NET_DEVICES_MAX)
        rep stosd
 
        pseudo_random   eax
        mov     [TCP_sequence_num], eax
 
        init_queue TCP_queue
 
        movi    ebx, 1
        mov     ecx, tcp_process_input
        call    new_sys_threads
        test    eax, eax
        jns     @f
        DEBUGF  DEBUG_NETWORK_ERROR,'K : cannot create kernel thread for TCP input, error %d\n', eax
  @@:
 
        movi    ebx, 1
        mov     ecx, tcp_timer_640ms
        call    new_sys_threads
        test    eax, eax
        jns     @f
        DEBUGF  DEBUG_NETWORK_ERROR,'K : cannot create kernel thread for TCP timer, error %d\n', eax
  @@:
 
}
 
 
include 'tcp_timer.inc'
include 'tcp_subr.inc'
include 'tcp_usreq.inc'
include 'tcp_input.inc'
include 'tcp_output.inc'
 
 
;------------------------------------------------------------------;
;                                                                  ;
; tcp_api: Part of system function 76                              ;
;                                                                  ;
;  IN:  bl = subfunction number                                    ;
;       bh = device number                                         ;
;       ecx, edx, .. depends on subfunction                        ;
;                                                                  ;
; OUT:  depends on subfunction                                     ;
;                                                                  ;
;------------------------------------------------------------------;
align 4
tcp_api:
 
        movzx   eax, bh
        shl     eax, 2
 
        test    bl, bl
        jz      .packets_tx     ; 0
        dec     bl
        jz      .packets_rx     ; 1
        dec     bl
        jz      .packets_missed ; 2
        dec     bl
        jz      .packets_dumped ; 3
        dec     bl
        jz      .packets_queued ; 4
 
  .error:
        mov     eax, -1
        ret
 
  .packets_tx:
        mov     eax, [TCP_segments_tx + eax]
        ret
 
  .packets_rx:
        mov     eax, [TCP_segments_rx + eax]
        ret
 
  .packets_missed:
        mov     eax, [TCP_segments_missed + eax]
        ret
 
  .packets_dumped:
        mov     eax, [TCP_segments_dumped + eax]
        ret
 
  .packets_queued:
        mov     eax, [TCP_queue + queue.size]
        ret

Rev 6476	Rev 6916
1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2	;; ;;	2	;; ;;
3	;; Copyright (C) KolibriOS team 2004-2016. All rights reserved. ;;	3	;; Copyright (C) KolibriOS team 2004-2017. All rights reserved. ;;
4	;; Distributed under terms of the GNU General Public License ;;	4	;; Distributed under terms of the GNU General Public License ;;
5	;; ;;	5	;; ;;
6	;; Part of the TCP/IP network stack for KolibriOS ;;	6	;; Part of the TCP/IP network stack for KolibriOS ;;
7	;; ;;	7	;; ;;
8	;; Written by hidnplayr@kolibrios.org ;;	8	;; Written by hidnplayr@kolibrios.org ;;
9	;; ;;	9	;; ;;
10	;; Based on the code of 4.4BSD ;;	10	;; Based on the code of 4.4BSD ;;
11	;; ;;	11	;; ;;
12	;; GNU GENERAL PUBLIC LICENSE ;;	12	;; GNU GENERAL PUBLIC LICENSE ;;
13	;; Version 2, June 1991 ;;	13	;; Version 2, June 1991 ;;
14	;; ;;	14	;; ;;
15	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	15	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
16		16
17	$Revision: 6476 $	17	$Revision: 6916 $
18		18
19	; Socket states	19	; Socket states
20	TCPS_CLOSED = 0	20	TCPS_CLOSED = 0
21	TCPS_LISTEN = 1	21	TCPS_LISTEN = 1
22	TCPS_SYN_SENT = 2	22	TCPS_SYN_SENT = 2
23	TCPS_SYN_RECEIVED = 3	23	TCPS_SYN_RECEIVED = 3
24	TCPS_ESTABLISHED = 4	24	TCPS_ESTABLISHED = 4
25	TCPS_CLOSE_WAIT = 5	25	TCPS_CLOSE_WAIT = 5
26	TCPS_FIN_WAIT_1 = 6	26	TCPS_FIN_WAIT_1 = 6
27	TCPS_CLOSING = 7	27	TCPS_CLOSING = 7
28	TCPS_LAST_ACK = 8	28	TCPS_LAST_ACK = 8
29	TCPS_FIN_WAIT_2 = 9	29	TCPS_FIN_WAIT_2 = 9
30	TCPS_TIME_WAIT = 10	30	TCPS_TIME_WAIT = 10
31		31
32	; Socket Flags	32	; Socket Flags
33	TF_ACKNOW = 1 shl 0 ; ack peer immediately	33	TF_ACKNOW = 1 shl 0 ; ack peer immediately
34	TF_DELACK = 1 shl 1 ; ack, but try to delay it	34	TF_DELACK = 1 shl 1 ; ack, but try to delay it
35	TF_NODELAY = 1 shl 2 ; don't delay packets to coalesce	35	TF_NODELAY = 1 shl 2 ; don't delay packets to coalesce
36	TF_NOOPT = 1 shl 3 ; don't use tcp options	36	TF_NOOPT = 1 shl 3 ; don't use tcp options
37	TF_SENTFIN = 1 shl 4 ; have sent FIN	37	TF_SENTFIN = 1 shl 4 ; have sent FIN
38	TF_REQ_SCALE = 1 shl 5 ; have/will request window scaling	38	TF_REQ_SCALE = 1 shl 5 ; have/will request window scaling
39	TF_RCVD_SCALE = 1 shl 6 ; other side has requested scaling	39	TF_RCVD_SCALE = 1 shl 6 ; other side has requested scaling
40	TF_REQ_TSTMP = 1 shl 7 ; have/will request timestamps	40	TF_REQ_TSTMP = 1 shl 7 ; have/will request timestamps
41	TF_RCVD_TSTMP = 1 shl 8 ; a timestamp was received in SYN	41	TF_RCVD_TSTMP = 1 shl 8 ; a timestamp was received in SYN
42	TF_SACK_PERMIT = 1 shl 9 ; other side said I could SACK	42	TF_SACK_PERMIT = 1 shl 9 ; other side said I could SACK
-		43
-		44	TF_FORCE = 1 shl 16 ; force to send a segment
43		45
44	; Segment flags	46	; Segment flags
45	TH_FIN = 1 shl 0	47	TH_FIN = 1 shl 0
46	TH_SYN = 1 shl 1	48	TH_SYN = 1 shl 1
47	TH_RST = 1 shl 2	49	TH_RST = 1 shl 2
48	TH_PUSH = 1 shl 3	50	TH_PUSH = 1 shl 3
49	TH_ACK = 1 shl 4	51	TH_ACK = 1 shl 4
50	TH_URG = 1 shl 5	52	TH_URG = 1 shl 5
51		53
52	; Segment header options	54	; Segment header options
53	TCP_OPT_EOL = 0 ; End of option list.	55	TCP_OPT_EOL = 0 ; End of option list.
54	TCP_OPT_NOP = 1 ; No-Operation.	56	TCP_OPT_NOP = 1 ; No-Operation.
55	TCP_OPT_MAXSEG = 2 ; Maximum Segment Size.	57	TCP_OPT_MAXSEG = 2 ; Maximum Segment Size.
56	TCP_OPT_WINDOW = 3 ; window scale	58	TCP_OPT_WINDOW = 3 ; window scale
57	TCP_OPT_SACK_PERMIT = 4 ; Selective Acknowledgement	59	TCP_OPT_SACK_PERMIT = 4 ; Selective Acknowledgement
58	TCP_OPT_SACK = 5	60	TCP_OPT_SACK = 5
59	TCP_OPT_TIMESTAMP = 8	61	TCP_OPT_TIMESTAMP = 8
60		62
61	; Fundamental timer values	63	; Fundamental timer values
62	TCP_time_MSL = 47 ; max segment lifetime (30s)	64	TCP_time_MSL = 47 ; max segment lifetime (30s)
63	TCP_time_re_min = 2 ; min retransmission (1,28s)	65	TCP_time_re_min = 2 ; min retransmission (1,28s)
64	TCP_time_re_max = 100 ; max retransmission (64s)	66	TCP_time_re_max = 100 ; max retransmission (64s)
65	TCP_time_pers_min = 8 ; min persist (5,12s)	67	TCP_time_pers_min = 8 ; min persist (5,12s)
66	TCP_time_pers_max = 94 ; max persist (60,16s)	68	TCP_time_pers_max = 94 ; max persist (60,16s)
67	TCP_time_keep_init = 118 ; connection establishment (75,52s)	69	TCP_time_keep_init = 118 ; connection establishment (75,52s)
68	TCP_time_keep_idle = 4608 ; idle time before 1st probe (2h)	70	TCP_time_keep_idle = 4608 ; idle time before 1st probe (2h)
69	TCP_time_keep_interval = 118 ; between probes when no response (75,52s)	71	TCP_time_keep_interval = 118 ; between probes when no response (75,52s)
70	TCP_time_rtt_default = 5 ; default Round Trip Time (3,2s)	72	TCP_time_rtt_default = 5 ; default Round Trip Time (3,2s)
71	TCP_time_srtt_default = 0 ;	73	TCP_time_srtt_default = 0 ;
72	TCP_time_max_idle = 8*TCP_time_keep_interval ; FIXME	74	TCP_time_max_idle = 8*TCP_time_keep_interval ; FIXME
73		75
74	TCP_time_connect = 300 ; in 1/100s (default=3s)	76	TCP_time_connect = 300 ; in 1/100s (default=3s)
75		77
76	; timer constants	78	; timer constants
77	TCP_max_rxtshift = 12 ; max retransmissions waiting for ACK	79	TCP_max_rxtshift = 12 ; max retransmissions waiting for ACK
78	TCP_max_keepcnt = 8 ; max keepalive probes	80	TCP_max_keepcnt = 8 ; max keepalive probes
79		81
80	;	82	;
81	TCP_max_winshift = 14	83	TCP_max_winshift = 14
82	TCP_max_win = 65535	84	TCP_max_win = 65535
83		85
84	TCP_re_xmit_thresh = 3	86	TCP_re_xmit_thresh = 3
85		87
86	TCP_mss_default = 1480 ; default max segment size	88	TCP_mss_default = 1480 ; default max segment size
87		89
88	; smoothed round trip time and estimated variance are stored as fixed point numbers,	90	; smoothed round trip time and estimated variance are stored as fixed point numbers,
89	; shifted by the value below.	91	; shifted by the value below.
90	; With these scales, srtt has 3 bits to the right of the binary point, and thus an "alpha"	92	; With these scales, srtt has 3 bits to the right of the binary point, and thus an "alpha"
91	; of .875. rttvar has 2 bits to the right and thus "alpha" of 0.75	93	; of .875. rttvar has 2 bits to the right and thus "alpha" of 0.75
92	TCP_RTT_SHIFT = 3	94	TCP_RTT_SHIFT = 3
93	TCP_RTTVAR_SHIFT = 2	95	TCP_RTTVAR_SHIFT = 2
94		96
95	TCP_PAWS_IDLE = 24246060100 ; 24 days, in 1/100 seconds	97	TCP_PAWS_IDLE = 24246060100 ; 24 days, in 1/100 seconds
96		98
97	TCP_QUEUE_SIZE = 50	99	TCP_QUEUE_SIZE = 50
98		100
99	TCP_ISSINCR = 128000	101	TCP_ISSINCR = 128000
100		102
101	struct TCP_header	103	struct TCP_header
102		104
103	SourcePort dw ?	105	SourcePort dw ?
104	DestinationPort dw ?	106	DestinationPort dw ?
105	SequenceNumber dd ?	107	SequenceNumber dd ?
106	AckNumber dd ?	108	AckNumber dd ?
107	DataOffset db ? ; DataOffset[0-3 bits] and Reserved[4-7]	109	DataOffset db ? ; DataOffset[0-3 bits] and Reserved[4-7]
108	Flags db ? ; Reserved[0-1 bits]\|URG\|ACK\|PSH\|RST\|SYN\|FIN	110	Flags db ? ; Reserved[0-1 bits]\|URG\|ACK\|PSH\|RST\|SYN\|FIN
109	Window dw ?	111	Window dw ?
110	Checksum dw ?	112	Checksum dw ?
111	UrgentPointer dw ?	113	UrgentPointer dw ?
112		114
113	ends	115	ends
114		116
115	struct TCP_queue_entry	117	struct TCP_queue_entry
116		118
117	ip_ptr dd ?	119	ip_ptr dd ?
118	segment_ptr dd ?	120	segment_ptr dd ?
119	segment_size dd ?	121	segment_size dd ?
120	device_ptr dd ?	122	device_ptr dd ?
121	timestamp dd ?	123	timestamp dd ?
122	buffer_ptr dd ?	124	buffer_ptr dd ?
123		125
124	ends	126	ends
125		127
126	uglobal	128	uglobal
127	align 4	129	align 4
128		130
129	TCP_segments_tx rd NET_DEVICES_MAX	131	TCP_segments_tx rd NET_DEVICES_MAX
130	TCP_segments_rx rd NET_DEVICES_MAX	132	TCP_segments_rx rd NET_DEVICES_MAX
131	TCP_segments_missed rd NET_DEVICES_MAX	133	TCP_segments_missed rd NET_DEVICES_MAX
132	TCP_segments_dumped rd NET_DEVICES_MAX	134	TCP_segments_dumped rd NET_DEVICES_MAX
133	; TCP_bytes_rx rq NET_DEVICES_MAX	135	; TCP_bytes_rx rq NET_DEVICES_MAX
134	; TCP_bytes_tx rq NET_DEVICES_MAX	136	; TCP_bytes_tx rq NET_DEVICES_MAX
135	TCP_sequence_num dd ?	137	TCP_sequence_num dd ?
136	TCP_queue rd (TCP_QUEUE_SIZE*sizeof.TCP_queue_entry + sizeof.queue)/4	138	TCP_queue rd (TCP_QUEUE_SIZE*sizeof.TCP_queue_entry + sizeof.queue)/4
137	TCP_input_event dd ?	139	TCP_input_event dd ?
138	TCP_timer1_event dd ?	140	TCP_timer1_event dd ?
139	endg	141	endg
140		142
141	uglobal	143	uglobal
142	align 4	144	align 4
143		145
144	TCPS_accepts dd ? ; #SYNs received in LISTEN state	146	TCPS_accepts dd ? ; #SYNs received in LISTEN state
145	TCPS_closed dd ? ; #connections closed (includes drops)	147	TCPS_closed dd ? ; #connections closed (includes drops)
146	TCPS_connattempt dd ? ; #connections initiated (calls to connect)	148	TCPS_connattempt dd ? ; #connections initiated (calls to connect)
147	TCPS_conndrops dd ? ; #embryonic connections dropped (before SYN received)	149	TCPS_conndrops dd ? ; #embryonic connections dropped (before SYN received)
148	TCPS_connects dd ? ; #connections established actively or passively	150	TCPS_connects dd ? ; #connections established actively or passively
149	TCPS_delack dd ? ; #delayed ACKs sent	151	TCPS_delack dd ? ; #delayed ACKs sent
150	TCPS_drops dd ? ; #connections dropped (after SYN received)	152	TCPS_drops dd ? ; #connections dropped (after SYN received)
151	TCPS_keepdrops dd ? ; #connections dropped in keepalive (established or awaiting SYN)	153	TCPS_keepdrops dd ? ; #connections dropped in keepalive (established or awaiting SYN)
152	TCPS_keepprobe dd ? ; #keepalive probes sent	154	TCPS_keepprobe dd ? ; #keepalive probes sent
153	TCPS_keeptimeo dd ? ; #times keepalive timer or connections-establishment timer expire	155	TCPS_keeptimeo dd ? ; #times keepalive timer or connections-establishment timer expire
154	TCPS_pawsdrop dd ? ; #segments dropped due to PAWS	156	TCPS_pawsdrop dd ? ; #segments dropped due to PAWS
155	TCPS_pcbcachemiss dd ? ; #times PCB cache comparison fails	157	TCPS_pcbcachemiss dd ? ; #times PCB cache comparison fails
156	TCPS_persisttimeo dd ? ; #times persist timer expires	158	TCPS_persisttimeo dd ? ; #times persist timer expires
157	TCPS_predack dd ? ; #times header prediction correct for ACKs	159	TCPS_predack dd ? ; #times header prediction correct for ACKs
158	TCPS_preddat dd ? ; #times header prediction correct for data packets	160	TCPS_preddat dd ? ; #times header prediction correct for data packets
159	TCPS_rcvackbyte dd ? ; #bytes ACKed by received ACKs	161	TCPS_rcvackbyte dd ? ; #bytes ACKed by received ACKs
160	TCPS_rcvackpack dd ? ; #received ACK packets	162	TCPS_rcvackpack dd ? ; #received ACK packets
161	TCPS_rcvacktoomuch dd ? ; #received ACKs for unsent data	163	TCPS_rcvacktoomuch dd ? ; #received ACKs for unsent data
162	TCPS_rcvafterclose dd ? ; #packets received after connection closed	164	TCPS_rcvafterclose dd ? ; #packets received after connection closed
163	TCPS_rcvbadoff dd ? ; #packets received with invalid header length	165	TCPS_rcvbadoff dd ? ; #packets received with invalid header length
164	TCPS_rcvbadsum dd ? ; #packets received with checksum errors	166	TCPS_rcvbadsum dd ? ; #packets received with checksum errors
165	TCPS_rcvbyte dd ? ; #bytes received in sequence	167	TCPS_rcvbyte dd ? ; #bytes received in sequence
166	TCPS_rcvbyteafterwin dd ? ; #bytes received beyond advertised window	168	TCPS_rcvbyteafterwin dd ? ; #bytes received beyond advertised window
167	TCPS_rcvdupack dd ? ; #duplicate ACKs received	169	TCPS_rcvdupack dd ? ; #duplicate ACKs received
168	TCPS_rcvdupbyte dd ? ; #bytes receivedin completely duplicate packets	170	TCPS_rcvdupbyte dd ? ; #bytes receivedin completely duplicate packets
169	TCPS_rcvduppack dd ? ; #packets received with completely duplicate bytes	171	TCPS_rcvduppack dd ? ; #packets received with completely duplicate bytes
170	TCPS_rcvoobyte dd ? ; #out-of-order bytes received	172	TCPS_rcvoobyte dd ? ; #out-of-order bytes received
171	TCPS_rcvoopack dd ? ; #out-of-order packets received	173	TCPS_rcvoopack dd ? ; #out-of-order packets received
172	TCPS_rcvpack dd ? ; #packets received in sequence	174	TCPS_rcvpack dd ? ; #packets received in sequence
173	TCPS_rcvpackafterwin dd ? ; #packets with some data beyond advertised window	175	TCPS_rcvpackafterwin dd ? ; #packets with some data beyond advertised window
174	TCPS_rcvpartdupbyte dd ? ; #duplicate bytes in part-duplicate packets	176	TCPS_rcvpartdupbyte dd ? ; #duplicate bytes in part-duplicate packets
175	TCPS_rcvpartduppack dd ? ; #packets with some duplicate data	177	TCPS_rcvpartduppack dd ? ; #packets with some duplicate data
176	TCPS_rcvshort dd ? ; #packets received too short	178	TCPS_rcvshort dd ? ; #packets received too short
177	TCPS_rcvtotal dd ? ; #total packets received	179	TCPS_rcvtotal dd ? ; #total packets received
178	TCPS_rcvwinprobe dd ? ; #window probe packets received	180	TCPS_rcvwinprobe dd ? ; #window probe packets received
179	TCPS_rcvwinupd dd ? ; #received window update packets	181	TCPS_rcvwinupd dd ? ; #received window update packets
180	TCPS_rexmttimeo dd ? ; #retransmission timeouts	182	TCPS_rexmttimeo dd ? ; #retransmission timeouts
181	TCPS_rttupdated dd ? ; #times RTT estimators updated	183	TCPS_rttupdated dd ? ; #times RTT estimators updated
182	TCPS_segstimed dd ? ; #segments for which TCP tried to measure RTT	184	TCPS_segstimed dd ? ; #segments for which TCP tried to measure RTT
183	TCPS_sndacks dd ? ; #ACK-only packets sent (data length = 0)	185	TCPS_sndacks dd ? ; #ACK-only packets sent (data length = 0)
184	TCPS_sndbyte dd ? ; #data bytes sent	186	TCPS_sndbyte dd ? ; #data bytes sent
185	TCPS_sndctrl dd ? ; #control (SYN, FIN, RST) packets sent (data length = 0)	187	TCPS_sndctrl dd ? ; #control (SYN, FIN, RST) packets sent (data length = 0)
186	TCPS_sndpack dd ? ; #data packets sent (data length > 0)	188	TCPS_sndpack dd ? ; #data packets sent (data length > 0)
187	TCPS_sndprobe dd ? ; #window probes sent (1 byte of data forced by persist timer)	189	TCPS_sndprobe dd ? ; #window probes sent (1 byte of data forced by persist timer)
188	TCPS_sndrexmitbyte dd ? ; #data bytes retransmitted	190	TCPS_sndrexmitbyte dd ? ; #data bytes retransmitted
189	TCPS_sndrexmitpack dd ? ; #data packets retransmitted	191	TCPS_sndrexmitpack dd ? ; #data packets retransmitted
190	TCPS_sndtotal dd ? ; total #packets sent	192	TCPS_sndtotal dd ? ; total #packets sent
191	TCPS_sndurg dd ? ; #packets sent with URG-only (data length=0)	193	TCPS_sndurg dd ? ; #packets sent with URG-only (data length=0)
192	TCPS_sndwinup dd ? ; #window update-only packets sent (data length=0)	194	TCPS_sndwinup dd ? ; #window update-only packets sent (data length=0)
193	TCPS_timeoutdrop dd ? ; #connections dropped in retransmission timeout	195	TCPS_timeoutdrop dd ? ; #connections dropped in retransmission timeout
194		196
195	endg	197	endg
196		198
197		199
198	;-----------------------------------------------------------------;	200	;-----------------------------------------------------------------;
199	; ;	201	; ;
200	; TCP_init: Resets all TCP variables. ;	202	; TCP_init: Resets all TCP variables. ;
201	; ;	203	; ;
202	;-----------------------------------------------------------------;	204	;-----------------------------------------------------------------;
203	macro tcp_init {	205	macro tcp_init {
204		206
205	xor eax, eax	207	xor eax, eax
206	mov edi, TCP_segments_tx	208	mov edi, TCP_segments_tx
207	mov ecx, (6*NET_DEVICES_MAX)	209	mov ecx, (6*NET_DEVICES_MAX)
208	rep stosd	210	rep stosd
209		211
210	pseudo_random eax	212	pseudo_random eax
211	mov [TCP_sequence_num], eax	213	mov [TCP_sequence_num], eax
212		214
213	init_queue TCP_queue	215	init_queue TCP_queue
214		216
215	movi ebx, 1	217	movi ebx, 1
216	mov ecx, tcp_process_input	218	mov ecx, tcp_process_input
217	call new_sys_threads	219	call new_sys_threads
218	test eax, eax	220	test eax, eax
219	jns @f	221	jns @f
220	DEBUGF DEBUG_NETWORK_ERROR,'K : cannot create kernel thread for TCP input, error %d\n', eax	222	DEBUGF DEBUG_NETWORK_ERROR,'K : cannot create kernel thread for TCP input, error %d\n', eax
221	@@:	223	@@:
222		224
223	movi ebx, 1	225	movi ebx, 1
224	mov ecx, tcp_timer_640ms	226	mov ecx, tcp_timer_640ms
225	call new_sys_threads	227	call new_sys_threads
226	test eax, eax	228	test eax, eax
227	jns @f	229	jns @f
228	DEBUGF DEBUG_NETWORK_ERROR,'K : cannot create kernel thread for TCP timer, error %d\n', eax	230	DEBUGF DEBUG_NETWORK_ERROR,'K : cannot create kernel thread for TCP timer, error %d\n', eax
229	@@:	231	@@:
230		232
231	}	233	}
232		234
233		235
234	include 'tcp_timer.inc'	236	include 'tcp_timer.inc'
235	include 'tcp_subr.inc'	237	include 'tcp_subr.inc'
236	include 'tcp_usreq.inc'	238	include 'tcp_usreq.inc'
237	include 'tcp_input.inc'	239	include 'tcp_input.inc'
238	include 'tcp_output.inc'	240	include 'tcp_output.inc'
239		241
240		242
241	;------------------------------------------------------------------;	243	;------------------------------------------------------------------;
242	; ;	244	; ;
243	; tcp_api: Part of system function 76 ;	245	; tcp_api: Part of system function 76 ;
244	; ;	246	; ;
245	; IN: bl = subfunction number ;	247	; IN: bl = subfunction number ;
246	; bh = device number ;	248	; bh = device number ;
247	; ecx, edx, .. depends on subfunction ;	249	; ecx, edx, .. depends on subfunction ;
248	; ;	250	; ;
249	; OUT: depends on subfunction ;	251	; OUT: depends on subfunction ;
250	; ;	252	; ;
251	;------------------------------------------------------------------;	253	;------------------------------------------------------------------;
252	align 4	254	align 4
253	tcp_api:	255	tcp_api:
254		256
255	movzx eax, bh	257	movzx eax, bh
256	shl eax, 2	258	shl eax, 2
257		259
258	test bl, bl	260	test bl, bl
259	jz .packets_tx ; 0	261	jz .packets_tx ; 0
260	dec bl	262	dec bl
261	jz .packets_rx ; 1	263	jz .packets_rx ; 1
262	dec bl	264	dec bl
263	jz .packets_missed ; 2	265	jz .packets_missed ; 2
264	dec bl	266	dec bl
265	jz .packets_dumped ; 3	267	jz .packets_dumped ; 3
266	dec bl	268	dec bl
267	jz .packets_queued ; 4	269	jz .packets_queued ; 4
268		270
269	.error:	271	.error:
270	mov eax, -1	272	mov eax, -1
271	ret	273	ret
272		274
273	.packets_tx:	275	.packets_tx:
274	mov eax, [TCP_segments_tx + eax]	276	mov eax, [TCP_segments_tx + eax]
275	ret	277	ret
276		278
277	.packets_rx:	279	.packets_rx:
278	mov eax, [TCP_segments_rx + eax]	280	mov eax, [TCP_segments_rx + eax]
279	ret	281	ret
280		282
281	.packets_missed:	283	.packets_missed:
282	mov eax, [TCP_segments_missed + eax]	284	mov eax, [TCP_segments_missed + eax]
283	ret	285	ret
284		286
285	.packets_dumped:	287	.packets_dumped:
286	mov eax, [TCP_segments_dumped + eax]	288	mov eax, [TCP_segments_dumped + eax]
287	ret	289	ret
288		290
289	.packets_queued:	291	.packets_queued:
290	mov eax, [TCP_queue + queue.size]	292	mov eax, [TCP_queue + queue.size]
291	ret	293	ret

Subversion Repositories Kolibri OS

(root)/kernel/trunk/network/tcp.inc – Rev 6476 → 6916