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

Rev	Author	Line No.	Line
3545	hidnplayr	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
10051	ace_dent	3	;; Copyright (C) KolibriOS team 2004-2024. All rights reserved. ;;
3545	hidnplayr	4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;; loopback.inc ;;
		7	;; ;;
		8	;; LoopBack device for KolibriOS ;;
		9	;; ;;
		10	;; Written by hidnplayr@kolibrios.org ;;
		11	;; ;;
		12	;; GNU GENERAL PUBLIC LICENSE ;;
		13	;; Version 2, June 1991 ;;
		14	;; ;;
		15	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		16
		17
		18	iglobal
3698	hidnplayr	19	align 4
3545	hidnplayr	20
		21	LOOPBACK_DEVICE:
3600	hidnplayr	22
9054	hidnplayr	23	.device_type dd NET_DEVICE_LOOPBACK
		24	.mtu dd NET_BUFFER_SIZE - NET_BUFF.data
		25	.name dd .namestr
3545	hidnplayr	26
9054	hidnplayr	27	.unload dd loop_dummy
		28	.reset dd loop_dummy
		29	.transmit dd loop_input
3545	hidnplayr	30
9054	hidnplayr	31	.link_state dd -1
		32	.hwacc dd NET_HWACC_TCP_IPv4_IN + NET_HWACC_TCP_IPv4_OUT
3545	hidnplayr	33
9054	hidnplayr	34	.bytes_tx dq ?
		35	.bytes_rx dq ?
3545	hidnplayr	36
9054	hidnplayr	37	.packets_tx dd ?
		38	.packets_tx_err dd ?
		39	.packets_tx_drop dd ?
		40	.packets_tx_ovr dd ?
3601	hidnplayr	41
9054	hidnplayr	42	.packets_rx dd ?
		43	.packets_rx_err dd ?
		44	.packets_rx_drop dd ?
		45	.packets_rx_ovr dd ?
		46
		47	.namestr db 'loopback', 0
		48
3545	hidnplayr	49	endg
		50
3601	hidnplayr	51
6011	hidnplayr	52	macro loop_init {
3601	hidnplayr	53	local .fail
		54
		55	mov ebx, LOOPBACK_DEVICE
6011	hidnplayr	56	call net_add_device
3601	hidnplayr	57
		58	cmp eax, -1
		59	je .fail
		60
7678	hidnplayr	61	mov [IPv4_address], 127 + 1 shl 24
		62	mov [IPv4_subnet], 255
		63	mov [IPv4_broadcast], 0xffffff00 + 127
3601	hidnplayr	64
		65	.fail:
		66	}
		67
5976	hidnplayr	68	;-----------------------------------------------------------------;
		69	; ;
8103	dunkaist	70	; loop_dummy ;
		71	; ;
		72	; IN: / ;
		73	; ;
		74	; OUT: / ;
		75	; ;
		76	;-----------------------------------------------------------------;
		77	align 4
		78	loop_dummy:
		79	ret
		80
		81	;-----------------------------------------------------------------;
		82	; ;
6011	hidnplayr	83	; loop_input ;
5976	hidnplayr	84	; ;
		85	; IN: [esp+4] = Pointer to buffer ;
		86	; ;
7678	hidnplayr	87	; OUT: eax = 0 on success, errorcode otherwise ;
5976	hidnplayr	88	; ;
		89	;-----------------------------------------------------------------;
3545	hidnplayr	90	align 4
6011	hidnplayr	91	loop_input:
3545	hidnplayr	92
5522	hidnplayr	93	mov eax, [esp+4]
3545	hidnplayr	94
5522	hidnplayr	95	; Update stats
7678	hidnplayr	96	inc [LOOPBACK_DEVICE.packets_tx]
3610	hidnplayr	97	inc [LOOPBACK_DEVICE.packets_rx]
5522	hidnplayr	98
		99	mov ecx, [eax + NET_BUFF.length]
3610	hidnplayr	100	add dword[LOOPBACK_DEVICE.bytes_rx], ecx
		101	adc dword[LOOPBACK_DEVICE.bytes_rx + 4], 0
7678	hidnplayr	102	add dword[LOOPBACK_DEVICE.bytes_tx], ecx
		103	adc dword[LOOPBACK_DEVICE.bytes_tx + 4], 0
3610	hidnplayr	104
5522	hidnplayr	105	DEBUGF DEBUG_NETWORK_VERBOSE, "LOOP_input: ptr=%x size=%u\n", eax, ecx
3545	hidnplayr	106
5522	hidnplayr	107	; Reverse buffptr and returnaddr on stack
		108	pop edx edi
7678	hidnplayr	109	push edx .done edi
5522	hidnplayr	110
		111	; Set registers for protocol handlers
		112	lea edx, [eax + NET_BUFF.data]
		113	mov ebx, [eax + NET_BUFF.device]
		114	mov eax, [eax + NET_BUFF.type]
		115
		116	; Place protocol handlers here
3600	hidnplayr	117	cmp eax, AF_INET4
6011	hidnplayr	118	je ipv4_input
3545	hidnplayr	119
5522	hidnplayr	120	DEBUGF DEBUG_NETWORK_VERBOSE, "LOOP_input: Unknown packet type=%x\n", eax
3545	hidnplayr	121
		122	.dump:
3556	hidnplayr	123	DEBUGF DEBUG_NETWORK_VERBOSE, "LOOP_input: dumping\n"
6011	hidnplayr	124	call net_buff_free
7678	hidnplayr	125
		126	or eax, -1
3545	hidnplayr	127	ret
		128
7678	hidnplayr	129	.done:
		130	xor eax, eax
		131	ret
5522	hidnplayr	132
7678	hidnplayr	133
5976	hidnplayr	134	;-----------------------------------------------------------------;
		135	; ;
6011	hidnplayr	136	; loop_output ;
5976	hidnplayr	137	; ;
		138	; IN: ecx = packet size ;
		139	; edi = address family ;
		140	; ;
		141	; OUT: eax = start of net frame / 0 on error ;
		142	; ebx = to device structure ;
		143	; ecx = unchanged (packet size of embedded data) ;
		144	; edi = start of payload ;
		145	; ;
		146	;-----------------------------------------------------------------;
3545	hidnplayr	147	align 4
6011	hidnplayr	148	loop_output:
3545	hidnplayr	149
3556	hidnplayr	150	DEBUGF DEBUG_NETWORK_VERBOSE, "LOOP_output\n"
3545	hidnplayr	151
5522	hidnplayr	152	cmp ecx, [LOOPBACK_DEVICE.mtu]
		153	ja .too_large
3545	hidnplayr	154
5522	hidnplayr	155	push ecx edi
5523	hidnplayr	156	add ecx, NET_BUFF.data
6011	hidnplayr	157	stdcall net_buff_alloc, ecx
3545	hidnplayr	158	test eax, eax
		159	jz .out_of_ram
		160
5522	hidnplayr	161	pop edi
		162	mov [eax + NET_BUFF.type], edi
		163	mov ebx, LOOPBACK_DEVICE
		164	mov [eax + NET_BUFF.device], ebx
3545	hidnplayr	165	pop ecx
5522	hidnplayr	166	mov [eax + NET_BUFF.length], ecx
		167	lea edi, [eax + NET_BUFF.data]
3545	hidnplayr	168
5522	hidnplayr	169	DEBUGF DEBUG_NETWORK_VERBOSE, "LOOP_output: ptr=%x size=%u\n", eax, ecx
3545	hidnplayr	170	ret
		171
5522	hidnplayr	172	.too_large:
		173	DEBUGF DEBUG_NETWORK_ERROR, "LOOP_output: packet is too large\n"
		174	xor eax, eax
		175	ret
		176
3545	hidnplayr	177	.out_of_ram:
3610	hidnplayr	178	DEBUGF DEBUG_NETWORK_ERROR, "LOOP_output: out of memory\n"
3600	hidnplayr	179	add esp, 4+4
5522	hidnplayr	180	xor eax, eax
3545	hidnplayr	181	ret
		182

Subversion Repositories Kolibri OS

(root)/kernel/trunk/network/loopback.inc @ 5976 – Rev 10051