;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2010. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; ETHERNET.INC ;;
;; ;;
;; Ethernet network layer for KolibriOS ;;
;; ;;
;; Written by hidnplayr@kolibrios.org ;;
;; ;;
;; GNU GENERAL PUBLIC LICENSE ;;
;; Version 2, June 1991 ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$Revision: 1519 $
struct ETH_FRAME
.DstMAC dp ? ; destination MAC-address
.SrcMAC dp ? ; source MAC-address
.Type dw ? ; type of the upper-layer protocol
.Data: ; data (46-1500 bytes for a normal packet)
ends
virtual at NET_DEVICE.end
ETH_DEVICE:
.set_mode dd ?
.get_mode dd ?
.set_MAC dd ?
.get_MAC dd ?
.mode dd ?
.mac dp ?
end virtual
align 4
iglobal
ETH_BROADCAST dp 0xffffffffffff
endg
align 4
uglobal
ETH_RUNNING dd ?
endg
;-----------------------------------------------------------------
;
; ETH_init
;
; This function resets all ethernet variables
;
; IN: /
; OUT: /
;
;-----------------------------------------------------------------
align 4
ETH_init:
mov [ETH_RUNNING], 0
ret
;-----------------------------------------------------------------
;
; ETH_Receiver:
;
; This function is called by ethernet drivers,
; It pushes the received ethernet packets onto the eth_in_queue
;
; IN: [esp] = Pointer to buffer
; [esp-4] = size of buffer
; ebx = pointer to eth_device
; OUT: /
;
;-----------------------------------------------------------------
align 4
ETH_receiver:
mov eax, [esp]
mov ecx, [esp+4]
DEBUGF 1,"ETH_Handler - size: %u\n", ecx
cmp ecx, 60 ; check packet length
jl .dump
sub ecx, ETH_FRAME.Data
lea edx, [eax + ETH_FRAME.Data]
mov ax , [eax + ETH_FRAME.Type]
cmp ax, ETHER_IPv4
je IPv4_handler
cmp ax, ETHER_ARP
je ARP_handler
; cmp ax, ETHER_PPP_DISCOVERY
; je PPPOE_discovery
DEBUGF 2,"Unknown ethernet packet type %x\n", ax
.dump:
DEBUGF 2,"ETH_Handler - dumping\n"
call kernel_free
add esp, 4
ret
;-----------------------------------------------------------------
;
; ETH_create_packet
;
; IN: eax = pointer to source mac
; ebx = pointer to destination mac
; ecx = packet size
; edx = device number
; di = protocol
;
; 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
ETH_create_packet:
DEBUGF 1,"Creating Ethernet Packet (size=%u): \n", ecx
push esi
mov esi, [NET_DRV_LIST] ;;; TODO: FIXME
cmp ecx, [esi + NET_DEVICE.mtu]
pop esi
jg .exit
push ecx di eax ebx edx
add ecx, ETH_FRAME.Data
push ecx
push ecx
call kernel_alloc
mov edi, eax
test edi, edi
jz .pop_exit
pop ecx
pop edx
pop esi
movsd
movsw
pop esi
movsd
movsw
pop ax
stosw
lea eax, [edi - ETH_FRAME.Data] ; Set eax to buffer start
mov edx, ecx ; Set ebx to complete buffer size
pop ecx
xor ebx, ebx ;;;; TODO: Fixme
mov ebx, [NET_DRV_LIST + ebx]
cmp edx, 46 + ETH_FRAME.Data ; If data size is less then 46, add padding bytes
jge .continue
mov edx, 46 + ETH_FRAME.Data
.continue:
DEBUGF 1,"done: %x size:%u device:%x\n", eax, edx, ebx
ret
.pop_exit:
DEBUGF 2,"Out of ram space!!\n"
add esp, 18
and edi, 0
ret
.exit:
DEBUGF 2,"Packet too large!\n"
and edi, 0
ret
;-----------------------------------------------------------------
;
; ETH_API
;
; This function is called by system function 75
;
; IN: subfunction number in bl
; device number in bh
; ecx, edx, .. depends on subfunction
;
; OUT:
;
;-----------------------------------------------------------------
align 4
ETH_API:
cmp bh, MAX_NET_DEVICES
jg .error
movzx eax, bh
shl eax, 2
cmp bl, 7
jz .out_queue
cmp bl, 6
jz .in_queue
mov eax, dword [NET_DRV_LIST + eax]
cmp [eax + NET_DEVICE.type], NET_TYPE_ETH
jne .error
test bl, bl
jz .packets_tx ; 0
dec bl
jz .packets_rx ; 1
dec bl
jz .bytes_tx ; 2
dec bl
jz .bytes_rx ; 3
dec bl
jz .read_mac ; 4
dec bl
jz .write_mac ; 5
.error:
DEBUGF 2,"Device is not ethernet type\n"
or eax, -1
ret
.packets_tx:
mov eax, dword [eax + NET_DEVICE.packets_tx]
ret
.packets_rx:
mov eax, dword [eax + NET_DEVICE.packets_rx]
ret
.bytes_tx:
mov ebx, dword [eax + NET_DEVICE.bytes_tx + 4]
mov eax, dword [eax + NET_DEVICE.bytes_tx]
mov [esp+20+4], ebx ; TODO: fix this ugly code
ret
.bytes_rx:
mov ebx, dword [eax + NET_DEVICE.bytes_rx + 4]
mov eax, dword [eax + NET_DEVICE.bytes_rx]
mov [esp+20+4], ebx ; TODO: fix this ugly code
ret
.read_mac:
movzx ebx, word [eax + ETH_DEVICE.mac]
mov eax, dword [eax + ETH_DEVICE.mac + 2]
mov [esp+20+4], ebx ; TODO: fix this ugly code
ret
.write_mac:
push ecx
push dx
call [eax + ETH_DEVICE.set_MAC]
ret
.in_queue:
if ETH_QUEUE
add eax, ETH_IN_QUEUE
mov eax, [eax + queue.size]
else
or eax, -1
end if
ret
.out_queue:
if ETH_QUEUE
add eax, ETH_OUT_QUEUE
mov eax, [eax + queue.size]
else
or eax, -1
end if
ret