| 0,0 → 1,155 |
|---|
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| ;; ;; |
| ;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;; |
| ;; Distributed under terms of the GNU General Public License ;; |
| ;; ;; |
| ;; loopback.inc ;; |
| ;; ;; |
| ;; LoopBack device for KolibriOS ;; |
| ;; ;; |
| ;; Written by hidnplayr@kolibrios.org ;; |
| ;; ;; |
| ;; GNU GENERAL PUBLIC LICENSE ;; |
| ;; Version 2, June 1991 ;; |
| ;; ;; |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| |
| $Revision: 2891 $ |
| |
| iglobal |
| align 4 |
| |
| LOOPBACK_DEVICE: |
| |
| .device_type dd NET_DEVICE_LOOPBACK |
| .mtu dd 4096 |
| .name dd .namestr |
| |
| .unload dd .dummy_fn |
| .reset dd .dummy_fn |
| .transmit dd LOOP_input |
| |
| .bytes_tx dq 0 |
| .bytes_rx dq 0 |
| .packets_tx dd 0 |
| .packets_rx dd 0 |
| |
| .link_state dd -1 |
| .hwacc dd NET_HWACC_TCP_IPv4_IN + NET_HWACC_TCP_IPv4_OUT |
| |
| .namestr db 'loopback', 0 |
| |
| .dummy_fn: |
| ret |
| |
| endg |
| |
| |
| macro LOOP_init { |
| local .fail |
| |
| mov ebx, LOOPBACK_DEVICE |
| call NET_add_device |
| |
| cmp eax, -1 |
| je .fail |
| |
| mov [IP_LIST], 127 + 1 shl 24 |
| mov [SUBNET_LIST], 255 |
| mov [BROADCAST_LIST], 0xffffff00 + 127 |
| |
| .fail: |
| } |
| |
| ;----------------------------------------------------------------- |
| ; |
| ; LOOP_input |
| ; |
| ; IN: [esp+4] = Pointer to buffer |
| ; [esp+8] = size of buffer |
| ; |
| ; OUT: / |
| ; |
| ;----------------------------------------------------------------- |
| align 4 |
| LOOP_input: |
| pop ebx |
| pop eax |
| pop ecx |
| |
| push ebx |
| push ecx |
| push eax |
| |
| inc [LOOPBACK_DEVICE.packets_rx] |
| add dword[LOOPBACK_DEVICE.bytes_rx], ecx |
| adc dword[LOOPBACK_DEVICE.bytes_rx + 4], 0 |
| |
| DEBUGF DEBUG_NETWORK_VERBOSE, "LOOP_input: size=%u\n", ecx |
| lea edx, [eax + 4] |
| mov eax, dword[eax] |
| mov ebx, LOOPBACK_DEVICE |
| |
| cmp eax, AF_INET4 |
| je IPv4_input |
| |
| DEBUGF DEBUG_NETWORK_VERBOSE, "LOOP_input: Unknown packet type=%x\n", ax |
| |
| .dump: |
| DEBUGF DEBUG_NETWORK_VERBOSE, "LOOP_input: dumping\n" |
| call NET_packet_free |
| add esp, 4 |
| ret |
| |
| ;----------------------------------------------------------------- |
| ; |
| ; LOOP_output |
| ; |
| ; IN: |
| ; ecx = packet size |
| ; edi = address family |
| ; |
| ; OUT: edi = 0 on error, pointer to buffer otherwise |
| ; eax = buffer start |
| ; ebx = to device structure |
| ; ecx = unchanged (packet size of embedded data) |
| ; edx = size of complete buffer |
| ; |
| ;----------------------------------------------------------------- |
| align 4 |
| LOOP_output: |
| |
| DEBUGF DEBUG_NETWORK_VERBOSE, "LOOP_output\n" |
| |
| push ecx |
| push edi |
| |
| add ecx, 4 |
| cmp ecx, [LOOPBACK_DEVICE.mtu] |
| ja .out_of_ram |
| stdcall kernel_alloc, ecx |
| test eax, eax |
| jz .out_of_ram |
| mov edi, eax |
| pop eax |
| stosd |
| |
| lea eax, [edi - 4] ; Set eax to buffer start |
| pop ecx |
| lea edx, [ecx + 4] ; Set edx to complete buffer size |
| mov ebx, LOOPBACK_DEVICE |
| |
| inc [LOOPBACK_DEVICE.packets_tx] |
| add dword[LOOPBACK_DEVICE.bytes_tx], ecx |
| adc dword[LOOPBACK_DEVICE.bytes_tx + 4], 0 |
| |
| DEBUGF DEBUG_NETWORK_VERBOSE, "LOOP_output: ptr=%x size=%u\n", eax, edx |
| ret |
| |
| .out_of_ram: |
| DEBUGF DEBUG_NETWORK_ERROR, "LOOP_output: out of memory\n" |
| add esp, 4+4 |
| xor edi, edi |
| ret |
| |
| |