WebSVN – Kolibri OS – Blame – /kernel/trunk/network/tcp_subr.inc

Rev	Author	Line No.	Line
3545	hidnplayr	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
7974	hidnplayr	3	;; Copyright (C) KolibriOS team 2004-2020. All rights reserved. ;;
3545	hidnplayr	4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;; Part of the TCP/IP network stack for KolibriOS ;;
		7	;; ;;
		8	;; Written by hidnplayr@kolibrios.org ;;
		9	;; ;;
		10	;; Based on the code of 4.4BSD ;;
		11	;; ;;
		12	;; GNU GENERAL PUBLIC LICENSE ;;
		13	;; Version 2, June 1991 ;;
		14	;; ;;
		15	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		16
4850	mario79	17	$Revision: 8026 $
3545	hidnplayr	18
		19	align 4
		20	iglobal
		21	TCP_backoff db 0,1,2,3,4,5,6,6,6,6,6,6,6
		22	endg
		23
6011	hidnplayr	24	macro tcp_checksum IP1, IP2 {
3545	hidnplayr	25
		26	;-------------
		27	; Pseudoheader
		28
		29	; protocol type
		30	mov edx, IP_PROTO_TCP
		31
		32	; source address
		33	add dl, byte [IP1+1]
		34	adc dh, byte [IP1+0]
		35	adc dl, byte [IP1+3]
		36	adc dh, byte [IP1+2]
		37
		38	; destination address
		39	adc dl, byte [IP2+1]
		40	adc dh, byte [IP2+0]
		41	adc dl, byte [IP2+3]
		42	adc dh, byte [IP2+2]
		43
		44	; size
		45	adc dl, cl
		46	adc dh, ch
		47
		48	adc edx, 0
		49
		50	;---------------------
		51	; Real header and data
		52
		53	push esi
		54	call checksum_1
		55	call checksum_2
		56	pop esi
		57
		58	} ; returns in dx only
		59
		60
		61
		62
6011	hidnplayr	63	macro tcp_sendseqinit ptr {
3545	hidnplayr	64
6011	hidnplayr	65	push edi ;;;; FIXME: i dont like this static use of edi
3545	hidnplayr	66	mov edi, [ptr + TCP_SOCKET.ISS]
		67	mov [ptr + TCP_SOCKET.SND_UP], edi
		68	mov [ptr + TCP_SOCKET.SND_MAX], edi
		69	mov [ptr + TCP_SOCKET.SND_NXT], edi
		70	mov [ptr + TCP_SOCKET.SND_UNA], edi
		71	pop edi
		72
		73	}
		74
		75
		76
6011	hidnplayr	77	macro tcp_rcvseqinit ptr {
3545	hidnplayr	78
		79	push edi
		80	mov edi, [ptr + TCP_SOCKET.IRS]
6476	hidnplayr	81	inc edi ; SYN ocupies a sequence number
3545	hidnplayr	82	mov [ptr + TCP_SOCKET.RCV_NXT], edi
		83	mov [ptr + TCP_SOCKET.RCV_ADV], edi
		84	pop edi
		85
		86	}
		87
		88
		89
6011	hidnplayr	90	macro tcp_init_socket socket {
3545	hidnplayr	91
7680	hidnplayr	92	; new tcp control block
		93
3545	hidnplayr	94	mov [socket + TCP_SOCKET.t_maxseg], TCP_mss_default
		95	mov [socket + TCP_SOCKET.t_flags], TF_REQ_SCALE or TF_REQ_TSTMP
		96
		97	mov [socket + TCP_SOCKET.t_srtt], TCP_time_srtt_default
		98	mov [socket + TCP_SOCKET.t_rttvar], TCP_time_rtt_default * 4
		99	mov [socket + TCP_SOCKET.t_rttmin], TCP_time_re_min
		100	;;; TODO: TCP_time_rangeset
		101
		102	mov [socket + TCP_SOCKET.SND_CWND], TCP_max_win shl TCP_max_winshift
		103	mov [socket + TCP_SOCKET.SND_SSTHRESH], TCP_max_win shl TCP_max_winshift
		104
7974	hidnplayr	105	mov [socket + TCP_SOCKET.RCV_SCALE], 0
		106	mov [socket + TCP_SOCKET.SND_SCALE], 0
3545	hidnplayr	107
		108	}
		109
		110
5976	hidnplayr	111	;-----------------------------------------------------------------;
		112	; ;
6011	hidnplayr	113	; tcp_pull_out_of_band ;
5976	hidnplayr	114	; ;
		115	; IN: eax = ? ;
		116	; ebx = socket ptr ;
		117	; edx = tcp packet ptr ;
		118	; ;
		119	; OUT: / ;
		120	; ;
		121	;-----------------------------------------------------------------;
3545	hidnplayr	122	align 4
6011	hidnplayr	123	tcp_pull_out_of_band:
3545	hidnplayr	124
6011	hidnplayr	125	DEBUGF DEBUG_NETWORK_VERBOSE, "tcp_pull_out_of_band\n"
3545	hidnplayr	126
		127	;;;; 1282-1305
		128
		129	ret
		130
		131
		132
5976	hidnplayr	133	;-----------------------------------------------------------------;
		134	; ;
6011	hidnplayr	135	; tcp_drop ;
5976	hidnplayr	136	; ;
		137	; IN: eax = socket ptr ;
		138	; ebx = error number ;
		139	; ;
		140	; OUT: eax = socket ptr ;
		141	; ;
		142	;-----------------------------------------------------------------;
3545	hidnplayr	143	align 4
7974	hidnplayr	144	tcp_drop:
3545	hidnplayr	145
7974	hidnplayr	146	;;; TODO: check if error code is "Connection timed out' and handle accordingly
		147
6011	hidnplayr	148	DEBUGF DEBUG_NETWORK_VERBOSE, "tcp_drop: %x\n", eax
3545	hidnplayr	149
		150	cmp [eax + TCP_SOCKET.t_state], TCPS_SYN_RECEIVED
		151	jb .no_syn_received
		152
		153	mov [eax + TCP_SOCKET.t_state], TCPS_CLOSED
		154
4365	hidnplayr	155	push eax
6011	hidnplayr	156	call tcp_output
4365	hidnplayr	157	pop eax
3545	hidnplayr	158
7974	hidnplayr	159	inc [TCPS_drops]
3545	hidnplayr	160
7974	hidnplayr	161	mov [eax + SOCKET.errorcode], ebx
6011	hidnplayr	162	jmp tcp_close
3545	hidnplayr	163
		164	.no_syn_received:
7974	hidnplayr	165	inc [TCPS_conndrops]
3545	hidnplayr	166
7974	hidnplayr	167	mov [eax + SOCKET.errorcode], ebx
		168	jmp tcp_close
3545	hidnplayr	169
		170
5976	hidnplayr	171	;-----------------------------------------------------------------;
		172	; ;
6011	hidnplayr	173	; tcp_disconnect ;
5976	hidnplayr	174	; ;
		175	; IN: eax = socket ptr ;
		176	; ;
		177	; OUT: eax = socket ptr / 0 ;
		178	; ;
		179	;-----------------------------------------------------------------;
4366	hidnplayr	180	align 4
6011	hidnplayr	181	tcp_disconnect:
3545	hidnplayr	182
4366	hidnplayr	183	DEBUGF DEBUG_NETWORK_VERBOSE, "TCP_disconnect: %x\n", eax
3545	hidnplayr	184
4366	hidnplayr	185	cmp [eax + TCP_SOCKET.t_state], TCPS_ESTABLISHED
6011	hidnplayr	186	jb tcp_close ; Connection not yet synchronised, just get rid of the socket
3545	hidnplayr	187
8026	hidnplayr	188	test [eax + SOCKET.options], SO_LINGER
		189	jz .nolinger
		190
4366	hidnplayr	191	; TODO: implement LINGER
8026	hidnplayr	192	; cmp [eax + SOCKET.so_linger], 0
		193	; je TCP_drop
3545	hidnplayr	194
8026	hidnplayr	195	.nolinger:
6011	hidnplayr	196	call socket_is_disconnecting
8026	hidnplayr	197
		198	push eax
		199	add eax, STREAM_SOCKET.rcv
		200	mov ecx, [eax + RING_BUFFER.size]
		201	call socket_ring_free
		202	pop eax
		203
6011	hidnplayr	204	call tcp_usrclosed
4366	hidnplayr	205
		206	test eax, eax
		207	jz @f
		208	push eax
6011	hidnplayr	209	call tcp_output
4366	hidnplayr	210	pop eax
		211	@@:
		212	ret
		213
		214
5976	hidnplayr	215	;-----------------------------------------------------------------;
		216	; ;
6011	hidnplayr	217	; tcp_close ;
5976	hidnplayr	218	; ;
		219	; IN: eax = socket ptr ;
		220	; ;
		221	; OUT: / ;
		222	; ;
		223	;-----------------------------------------------------------------;
3545	hidnplayr	224	align 4
6011	hidnplayr	225	tcp_close:
3545	hidnplayr	226
3556	hidnplayr	227	DEBUGF DEBUG_NETWORK_VERBOSE, "TCP_close: %x\n", eax
3545	hidnplayr	228
		229	;;; TODO: update RTT and mean deviation
		230	;;; TODO: update slow start threshold
		231
6011	hidnplayr	232	call socket_is_disconnected
		233	call socket_free
3545	hidnplayr	234
6476	hidnplayr	235	inc [TCPS_closed]
		236
4366	hidnplayr	237	xor eax, eax
3545	hidnplayr	238	ret
		239
		240
		241
5976	hidnplayr	242	;-----------------------------------------------------------------;
		243	; ;
6011	hidnplayr	244	; tcp_outflags ;
5976	hidnplayr	245	; ;
		246	; IN: eax = socket ptr ;
		247	; ;
		248	; OUT: edx = flags ;
		249	; ;
		250	;-----------------------------------------------------------------;
3545	hidnplayr	251	align 4
6011	hidnplayr	252	tcp_outflags:
3545	hidnplayr	253
		254	mov edx, [eax + TCP_SOCKET.t_state]
6011	hidnplayr	255	movzx edx, byte[edx + .flaglist]
3545	hidnplayr	256
3556	hidnplayr	257	DEBUGF DEBUG_NETWORK_VERBOSE, "TCP_outflags: socket=%x flags=%x\n", eax, dl
3545	hidnplayr	258
		259	ret
		260
		261	.flaglist:
		262	db TH_RST + TH_ACK ; TCPS_CLOSED
		263	db 0 ; TCPS_LISTEN
		264	db TH_SYN ; TCPS_SYN_SENT
		265	db TH_SYN + TH_ACK ; TCPS_SYN_RECEIVED
		266	db TH_ACK ; TCPS_ESTABLISHED
		267	db TH_ACK ; TCPS_CLOSE_WAIT
		268	db TH_FIN + TH_ACK ; TCPS_FIN_WAIT_1
		269	db TH_FIN + TH_ACK ; TCPS_CLOSING
		270	db TH_FIN + TH_ACK ; TCPS_LAST_ACK
		271	db TH_ACK ; TCPS_FIN_WAIT_2
6476	hidnplayr	272	db TH_ACK ; TCPS_TIME_WAIT
3545	hidnplayr	273
		274
5976	hidnplayr	275	;-----------------------------------------------------------------;
		276	; ;
		277	; TCP_respond: Fast way to send an ACK/RST/keepalive segment. ;
		278	; ;
		279	; IN: ebx = socket ptr ;
		280	; cl = flags ;
		281	; ;
		282	; OUT: / ;
		283	; ;
		284	;-----------------------------------------------------------------;
3545	hidnplayr	285	align 4
6011	hidnplayr	286	tcp_respond:
3545	hidnplayr	287
3556	hidnplayr	288	DEBUGF DEBUG_NETWORK_VERBOSE, "TCP_respond_socket: socket=%x flags=%x\n", ebx, cl
3545	hidnplayr	289
		290	;---------------------
		291	; Create the IP packet
		292
		293	push cx ebx
		294	mov edx, [ebx + IP_SOCKET.LocalIP]
5842	hidnplayr	295	mov edi, [ebx + IP_SOCKET.RemoteIP]
		296	mov al, [ebx + IP_SOCKET.ttl]
		297	mov ah, IP_PROTO_TCP
		298	mov ecx, sizeof.TCP_header
5584	hidnplayr	299	mov ebx, [ebx + IP_SOCKET.device]
6011	hidnplayr	300	call ipv4_output
3545	hidnplayr	301	jz .error
		302	pop esi cx
5522	hidnplayr	303	push eax
3545	hidnplayr	304
		305	;-----------------------------------------------
		306	; Fill in the TCP header by using the socket ptr
		307
		308	mov ax, [esi + TCP_SOCKET.LocalPort]
		309	stosw
		310	mov ax, [esi + TCP_SOCKET.RemotePort]
		311	stosw
		312	mov eax, [esi + TCP_SOCKET.SND_NXT]
		313	bswap eax
		314	stosd
		315	mov eax, [esi + TCP_SOCKET.RCV_NXT]
		316	bswap eax
		317	stosd
		318	mov al, 0x50 ; Dataoffset: 20 bytes (TCP_header.DataOffset)
		319	stosb
		320	mov al, cl
		321	stosb
7098	ashmew2	322	mov eax, SOCKET_BUFFER_SIZE
		323	sub eax, [esi + STREAM_SOCKET.rcv.size]
		324	cmp eax, TCP_max_win
		325	jbe .lessthanmax
		326	mov eax, TCP_max_win
8026	hidnplayr	327	.lessthanmax:
7098	ashmew2	328	mov cl, [esi + TCP_SOCKET.RCV_SCALE]
		329	shr eax, cl
		330
6913	ashmew2	331	xchg al, ah
3545	hidnplayr	332	stosw ; window
		333	xor eax, eax
		334	stosd ; checksum + urgentpointer
		335
		336	;---------------------
		337	; Fill in the checksum
		338
		339	.checksum:
		340	sub edi, sizeof.TCP_header
		341	mov ecx, sizeof.TCP_header
		342	xchg esi, edi
6011	hidnplayr	343	tcp_checksum (edi + IP_SOCKET.LocalIP), (edi + IP_SOCKET.RemoteIP)
3545	hidnplayr	344	mov [esi+TCP_header.Checksum], dx
		345
		346	;--------------------
		347	; And send the segment
		348
		349	call [ebx + NET_DEVICE.transmit]
3644	hidnplayr	350	test eax, eax
		351	jnz @f
6011	hidnplayr	352	call net_ptr_to_num4
3644	hidnplayr	353	inc [TCP_segments_tx + edi]
		354	@@:
3545	hidnplayr	355	ret
		356
		357	.error:
3556	hidnplayr	358	DEBUGF DEBUG_NETWORK_VERBOSE, "TCP_respond_socket: failed\n"
3545	hidnplayr	359	add esp, 2 + 4
		360
		361	ret
		362
		363
5976	hidnplayr	364	;-----------------------------------------------------------------;
		365	; ;
6011	hidnplayr	366	; tcp_respond_segment ;
5976	hidnplayr	367	; ;
		368	; IN: ebx = device ptr ;
		369	; edx = segment ptr (a previously received segment) ;
		370	; edi = ptr to IPv4 header ;
		371	; cl = flags ;
		372	; ;
		373	; OUT: / ;
		374	; ;
		375	;-----------------------------------------------------------------;
3545	hidnplayr	376	align 4
6011	hidnplayr	377	tcp_respond_segment:
3545	hidnplayr	378
5842	hidnplayr	379	DEBUGF DEBUG_NETWORK_VERBOSE, "TCP_respond_segment: frame=%x flags=%x\n", edx, cl
3545	hidnplayr	380
		381	;---------------------
		382	; Create the IP packet
		383
		384	push cx edx
5842	hidnplayr	385	mov edx, [edi + IPv4_header.DestinationAddress]
		386	mov edi, [edi + IPv4_header.SourceAddress]
3545	hidnplayr	387	mov ecx, sizeof.TCP_header
5842	hidnplayr	388	mov ax, IP_PROTO_TCP shl 8 + 128
6011	hidnplayr	389	call ipv4_output
3545	hidnplayr	390	jz .error
		391	pop esi cx
		392
5522	hidnplayr	393	push eax
3545	hidnplayr	394
		395	;---------------------------------------------------
		396	; Fill in the TCP header by using a received segment
		397
		398	mov ax, [esi + TCP_header.DestinationPort]
		399	stosw
		400	mov ax, [esi + TCP_header.SourcePort]
		401	stosw
		402	mov eax, [esi + TCP_header.AckNumber]
		403	bswap eax
		404	stosd
		405	xor eax, eax
		406	stosd
		407	mov al, 0x50 ; Dataoffset: 20 bytes (sizeof.TCP_header/4 shl 4)
		408	stosb
		409	mov al, cl
		410	stosb
		411	mov ax, 1280
		412	rol ax, 8
		413	stosw ; window
		414	xor eax, eax
		415	stosd ; checksum + urgentpointer
		416
		417	;---------------------
		418	; Fill in the checksum
		419
		420	lea esi, [edi - sizeof.TCP_header]
		421	mov ecx, sizeof.TCP_header
6011	hidnplayr	422	tcp_checksum (esi - sizeof.IPv4_header + IPv4_header.DestinationAddress),\ ; FIXME
3545	hidnplayr	423	(esi - sizeof.IPv4_header + IPv4_header.SourceAddress)
		424	mov [esi + TCP_header.Checksum], dx
		425
		426	;--------------------
		427	; And send the segment
		428
		429	call [ebx + NET_DEVICE.transmit]
3644	hidnplayr	430	test eax, eax
		431	jnz @f
6011	hidnplayr	432	call net_ptr_to_num4
3644	hidnplayr	433	inc [TCP_segments_tx + edi]
		434	@@:
3545	hidnplayr	435	ret
		436
		437	.error:
3556	hidnplayr	438	DEBUGF DEBUG_NETWORK_VERBOSE, "TCP_respond_segment: failed\n"
3545	hidnplayr	439	add esp, 2+4
		440
		441	ret
		442
		443
6011	hidnplayr	444	macro tcpt_rangeset timer, value, min, max {
3545	hidnplayr	445
		446	local .min
		447	local .max
		448	local .done
		449
		450	cmp value, min
		451	jb .min
		452	cmp value, max
		453	ja .max
		454	mov timer, value
		455	jmp .done
		456	.min:
6512	hidnplayr	457	mov timer, min
3545	hidnplayr	458	jmp .done
		459	.max:
6512	hidnplayr	460	mov timer, max
3545	hidnplayr	461	.done:
		462	}
		463
5976	hidnplayr	464	;-----------------------------------------------------------------;
		465	; ;
6011	hidnplayr	466	; tcp_set_persist ;
5976	hidnplayr	467	; ;
		468	;-----------------------------------------------------------------;
3545	hidnplayr	469	align 4
6011	hidnplayr	470	tcp_set_persist:
3545	hidnplayr	471
3556	hidnplayr	472	DEBUGF DEBUG_NETWORK_VERBOSE, "TCP_set_persist\n"
3545	hidnplayr	473
		474	; First, check if retransmit timer is not set, retransmit and persist are mutually exclusive
		475
3600	hidnplayr	476	test [eax + TCP_SOCKET.timer_flags], timer_flag_retransmission
		477	jnz .exit
3545	hidnplayr	478
		479	; calculate RTO
		480	push ebx
		481	mov ebx, [eax + TCP_SOCKET.t_srtt]
		482	shr ebx, 2
		483	add ebx, [eax + TCP_SOCKET.t_rttvar]
		484	shr ebx, 1
		485
		486	mov cl, [eax + TCP_SOCKET.t_rxtshift]
		487	shl ebx, cl
		488
		489	; Start/restart persistance timer.
		490
6011	hidnplayr	491	tcpt_rangeset [eax + TCP_SOCKET.timer_persist], ebx, TCP_time_pers_min, TCP_time_pers_max
3600	hidnplayr	492	or [ebx + TCP_SOCKET.timer_flags], timer_flag_persist
3545	hidnplayr	493	pop ebx
		494
		495	cmp [eax + TCP_SOCKET.t_rxtshift], TCP_max_rxtshift
		496	jae @f
		497	inc [eax + TCP_SOCKET.t_rxtshift]
		498	@@:
3600	hidnplayr	499	.exit:
3545	hidnplayr	500
		501	ret
		502
		503
		504
5976	hidnplayr	505	;-----------------------------------------------------------------;
		506	; ;
6011	hidnplayr	507	; tcp_xmit_timer: Calculate new smoothed RTT. ;
5976	hidnplayr	508	; ;
		509	; IN: eax = rtt ;
		510	; ebx = socket ptr ;
		511	; ;
		512	; OUT: / ;
		513	; ;
		514	;-----------------------------------------------------------------;
3545	hidnplayr	515	align 4
6011	hidnplayr	516	tcp_xmit_timer:
3545	hidnplayr	517
5976	hidnplayr	518	DEBUGF DEBUG_NETWORK_VERBOSE, "TCP_xmit_timer: socket=0x%x rtt=%d0ms\n", ebx, eax
3545	hidnplayr	519
6476	hidnplayr	520	inc [TCPS_rttupdated]
3545	hidnplayr	521
		522	cmp [ebx + TCP_SOCKET.t_rtt], 0
		523	je .no_rtt_yet
		524
		525	; srtt is stored as a fixed point with 3 bits after the binary point.
		526	; The following magic is equivalent of the smoothing algorithm in rfc793 with an alpha of .875
		527	; (srtt = rtt/8 + srtt*7/8 in fixed point)
		528	; Adjust rtt to origin 0.
		529
		530	push ecx
		531	mov ecx, [ebx + TCP_SOCKET.t_srtt]
		532	shr ecx, TCP_RTT_SHIFT
		533	sub eax, ecx
		534	dec eax
		535	pop ecx
		536
		537	add [ebx + TCP_SOCKET.t_srtt], eax
		538	ja @f
		539	mov [ebx + TCP_SOCKET.t_srtt], 1
		540	@@:
		541
		542	; We accumulate a smoothed rtt variance (actually, a smoothed mean difference),
		543	; then set the retransmit timer to smoothed rtt + 4 times the smoothed variance.
		544	; rttvar is stored as fixed point with 2 bits after the binary point.
		545	; The following is equivalent to rfc793 smoothing with an alpha of .75
		546	; (rttvar = rttvar*3/4 + delta/4) (delta = eax)
		547
		548	; get abs(eax)
		549	push edx
		550	cdq
		551	xor eax, edx
		552	sub eax, edx
		553
		554	mov edx, [ebx + TCP_SOCKET.t_rttvar]
		555	shr edx, TCP_RTTVAR_SHIFT
		556	sub eax, edx
		557	pop edx
		558
		559	add [ebx + TCP_SOCKET.t_rttvar], eax
		560	ja @f
		561	mov [ebx + TCP_SOCKET.t_rttvar], 1
		562	@@:
		563	ret
		564
		565
		566	.no_rtt_yet:
		567	push ecx
		568	mov ecx, eax
		569	shl ecx, TCP_RTT_SHIFT
		570	mov [ebx + TCP_SOCKET.t_srtt], ecx
		571
		572	shl eax, TCP_RTTVAR_SHIFT - 1
		573	mov [ebx + TCP_SOCKET.t_rttvar], eax
		574	pop ecx
		575
		576	ret
		577
		578
5976	hidnplayr	579	;-----------------------------------------------------------------;
		580	; ;
6011	hidnplayr	581	; tcp_mss: Update maximum segment size ;
5976	hidnplayr	582	; ;
		583	; IN: eax = max segment size ;
		584	; ebx = socket ptr ;
		585	; ;
		586	; OUT: / ;
		587	; ;
		588	;-----------------------------------------------------------------;
3545	hidnplayr	589	align 4
6011	hidnplayr	590	tcp_mss:
3545	hidnplayr	591
5976	hidnplayr	592	cmp eax, 1420 ; FIXME
3545	hidnplayr	593	jbe @f
		594	mov eax, 1420
		595	@@:
		596	mov [ebx + TCP_SOCKET.t_maxseg], eax
		597
		598
		599	ret
		600
		601
		602
5976	hidnplayr	603	;-----------------------------------------------------------------;
		604	; ;
6011	hidnplayr	605	; tcp_reassemble ;
5976	hidnplayr	606	; ;
		607	; IN: ebx = socket ptr ;
		608	; edx = segment ptr ;
		609	; ;
		610	; OUT: / ;
		611	; ;
		612	;-----------------------------------------------------------------;
3545	hidnplayr	613	align 4
6011	hidnplayr	614	tcp_reassemble:
3545	hidnplayr	615
5976	hidnplayr	616	;;;;; TODO
3545	hidnplayr	617
		618	ret
		619

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(root)/kernel/trunk/network/tcp_subr.inc @ 6476 – Rev 8026