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more small updates and fixes in net branch

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git-svn-id: svn://kolibrios.org@2310 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr 2011-11-12 20:05:07 +00:00
parent 29c0d093db
commit 3ce07b4be0
5 changed files with 796 additions and 795 deletions
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2
kernel/branches/net/network/IPv4.inc
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@ -301,7 +301,7 @@ IPv4_input: ; TODO: implement handler for IP options
lea edi, [edx + IPv4_header.SourceAddress] ; make edi ptr to source and dest IPv4 address
mov al , [edx + IPv4_header.Protocol]
add edx, esi ; make edi ptr to data
add esi, edx ; make esi ptr to data
cmp al , IP_PROTO_TCP
je TCP_input

5
kernel/branches/net/network/icmp.inc
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@ -133,7 +133,7 @@ macro ICMP_init {
; size of buffer in [esp+4]
; ebx = pointer to device struct
; ecx = ICMP Packet size
; edx = ptr to ICMP Packet data
; esi = ptr to ICMP Packet data
; edi = ptr to ipv4 source and dest address
;
; OUT: /
@ -146,10 +146,9 @@ ICMP_input:
; First, check the checksum (altough some implementations ignore it)
push edx ecx
push esi ecx
push [edx + ICMP_header.Checksum]
mov [edx + ICMP_header.Checksum], 0
mov esi, edx
xor edx, edx
call checksum_1
call checksum_2

1475
kernel/branches/net/network/socket.inc
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File diff suppressed because it is too large Load Diff

24
kernel/branches/net/network/tcp_input.inc
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@ -24,7 +24,7 @@ $Revision$
; [esp+4] = buffer size
; ebx = ptr to device struct
; ecx = segment size
; edx = ptr to TCP segment
; esi = ptr to TCP segment
; edi = ptr to ipv4 source address, followed by ipv4 dest address
;
; OUT: /
@ -36,18 +36,17 @@ TCP_input:
DEBUGF 1,"TCP_input size=%u\n", ecx
and [edx + TCP_header.DataOffset], 0xf0 ; Calculate TCP segment header size (throwing away unused reserved bits in TCP header)
shr [edx + TCP_header.DataOffset], 2
cmp [edx + TCP_header.DataOffset], sizeof.TCP_header ; Now see if it's at least the size of a standard TCP header
and [esi + TCP_header.DataOffset], 0xf0 ; Calculate TCP segment header size (throwing away unused reserved bits in TCP header)
shr [esi + TCP_header.DataOffset], 2
cmp [esi + TCP_header.DataOffset], sizeof.TCP_header ; Now see if it's at least the size of a standard TCP header
jb .drop_not_locked ; If not, drop the packet
;-------------------------------
; Now, re-calculate the checksum
push ecx edx
pushw [edx + TCP_header.Checksum]
mov [edx + TCP_header.Checksum], 0
mov esi, edx
push ecx esi
pushw [esi + TCP_header.Checksum]
mov [esi + TCP_header.Checksum], 0
TCP_checksum (edi), (edi+4)
pop cx ; previous checksum
cmp cx, dx
@ -56,14 +55,15 @@ TCP_input:
DEBUGF 1,"Checksum ok\n"
sub ecx, [edx + TCP_header.DataOffset] ; substract TCP header size from total segment size
movzx eax, [edx + TCP_header.DataOffset]
sub ecx, eax ; substract TCP header size from total segment size
jb .drop_not_locked ; If total segment size is less then the advertised header size, drop packet
DEBUGF 1,"we got %u bytes of data\n", ecx
;-----------------------------------------------------------------------------------------
; Check if this packet has a timestamp option (We do it here so we can process it quickly)
cmp [edx + TCP_header.DataOffset], sizeof.TCP_header + 12 ; Timestamp option is 12 bytes
cmp eax, sizeof.TCP_header + 12 ; Timestamp option is 12 bytes
jb .no_timestamp
je .is_ok
@ -202,8 +202,8 @@ TCP_input:
;--------------------
; Process TCP options
mov eax, [edx + TCP_header.DataOffset]
cmp eax, TCP_header.DataOffset ; Does header contain any options?
movzx eax, [edx + TCP_header.DataOffset]
cmp eax, sizeof.TCP_header ; Does header contain any options?
je .no_options
DEBUGF 1,"Segment has options\n"

85
kernel/branches/net/network/udp.inc
View File

@ -17,7 +17,7 @@
$Revision$
struct UDP_Packet
struct UDP_header
SourcePort dw ?
DestinationPort dw ?
@ -65,33 +65,33 @@ macro UDP_checksum IP1, IP2 { ; esi = ptr to udp packet, ecx = packet size
adc dl, [IP2+3]
adc dh, [IP2+2]
adc dl, cl ; byte[esi+UDP_Packet.Length+1]
adc dh, ch ; byte[esi+UDP_Packet.Length+0]
adc dl, cl ; byte[esi+UDP_header.Length+1]
adc dh, ch ; byte[esi+UDP_header.Length+0]
; Done with pseudoheader, now do real header
adc dl, byte[esi+UDP_Packet.SourcePort+1]
adc dh, byte[esi+UDP_Packet.SourcePort+0]
adc dl, byte[esi+UDP_header.SourcePort+1]
adc dh, byte[esi+UDP_header.SourcePort+0]
adc dl, byte[esi+UDP_Packet.DestinationPort+1]
adc dh, byte[esi+UDP_Packet.DestinationPort+0]
adc dl, byte[esi+UDP_header.DestinationPort+1]
adc dh, byte[esi+UDP_header.DestinationPort+0]
adc dl, byte[esi+UDP_Packet.Length+1]
adc dh, byte[esi+UDP_Packet.Length+0]
adc dl, byte[esi+UDP_header.Length+1]
adc dh, byte[esi+UDP_header.Length+0]
adc edx, 0
; Done with header, now do data
push esi
movzx ecx, [esi+UDP_Packet.Length]
movzx ecx, [esi+UDP_header.Length]
rol cx , 8
sub cx , sizeof.UDP_Packet
add esi, sizeof.UDP_Packet
sub cx , sizeof.UDP_header
add esi, sizeof.UDP_header
call checksum_1
call checksum_2
pop esi
add [esi+UDP_Packet.Checksum], dx ; this final instruction will set or clear ZF :)
add [esi+UDP_header.Checksum], dx ; this final instruction will set or clear ZF :)
}
@ -107,7 +107,7 @@ macro UDP_checksum IP1, IP2 { ; esi = ptr to udp packet, ecx = packet size
; [esp+4] = size of buffer
; ebx = ptr to device struct
; ecx = UDP Packet size
; edx = ptr to UDP header
; esi = ptr to UDP header
; edi = ptr to ipv4 source and dest address
;
; OUT: /
@ -118,40 +118,46 @@ UDP_input:
DEBUGF 1,"UDP_input, size:%u\n", ecx
; First validate, checksum:
neg [edx+UDP_Packet.Checksum] ; substract chechksum from 0
; First validate, checksum
neg [esi + UDP_header.Checksum] ; substract checksum from 0
jz .no_checksum ; if checksum is zero, it is considered valid and we continue processing
; otherwise, we will re-calculate the checksum and add it to this value, thus creating 0 when it is correct
push edx
push edi
push esi
mov esi, edx
UDP_checksum (edi), (edi+4)
pop edi
pop esi ; we dont need it, but it is smaller then add esp, 4
pop edx
jnz .checksum_mismatch
.no_checksum:
DEBUGF 1,"UDP Checksum is correct\n"
; Convert port numbers to intel format
rol [edx + UDP_header.DestinationPort], 8
rol [edx + UDP_header.SourcePort], 8
rol [edx + UDP_header.Length], 8
; Look for a socket where
; IP Packet UDP Destination Port = local Port
; IP Packet SA = Remote IP
mov si, [edx + UDP_header.DestinationPort]
mov cx, [edx + UDP_header.SourcePort]
mov edi, [edi + 4] ; ipv4 source address
mov eax, net_sockets
.try_more:
mov si , [edx + UDP_Packet.DestinationPort] ; get the local port from the IP Packet's UDP header
rol si , 8
.next_socket:
mov eax, [eax + SOCKET.NextPtr]
or eax, eax
jz .dump
cmp [eax + SOCKET.Domain], AF_INET4
jne .next_socket
cmp [eax + SOCKET.Protocol], IP_PROTO_UDP
jne .next_socket
cmp [eax + UDP_SOCKET.LocalPort], si
jne .next_socket
@ -161,17 +167,14 @@ UDP_input:
cmp [eax + IP_SOCKET.RemoteIP], 0xffffffff
je @f
mov edi, [edi + 4] ; ipv4 source address
cmp [eax + IP_SOCKET.RemoteIP], edi
jne .try_more
jne .next_socket
@@:
cmp [eax + UDP_SOCKET.firstpacket], 0
jz .updateport
mov si, [edx + UDP_Packet.SourcePort]
rol si, 8
cmp [eax + UDP_SOCKET.RemotePort], si
cmp [eax + UDP_SOCKET.RemotePort], cx
jne .dump
push ebx
@ -182,10 +185,9 @@ UDP_input:
.updatesock:
inc [UDP_PACKETS_RX]
DEBUGF 1,"Found valid UDP packet for socket %x\n", eax
lea esi, [edx + sizeof.UDP_Packet]
movzx ecx, [edx + UDP_Packet.Length]
rol cx , 8
sub cx , sizeof.UDP_Packet
lea esi, [edx + sizeof.UDP_header]
movzx ecx, [edx + UDP_header.Length]
sub ecx, sizeof.UDP_header
jmp SOCKET_input
@ -195,8 +197,7 @@ UDP_input:
call wait_mutex
pop ebx
mov si, [edx + UDP_Packet.SourcePort]
rol si, 8
mov si, [edx + UDP_header.SourcePort]
DEBUGF 1,"Changing remote port to: %u\n", si
mov [eax + UDP_SOCKET.RemotePort], si
inc [eax + UDP_SOCKET.firstpacket]
@ -246,7 +247,7 @@ UDP_output:
mov di, IP_PROTO_UDP shl 8 + 128
sub esp, 8 ; Data ptr and data size will be placed here
add ecx, sizeof.UDP_Packet
add ecx, sizeof.UDP_header
;;; TODO: fragment id
push edx esi
@ -256,13 +257,13 @@ UDP_output:
mov [esp + 8], eax ; pointer to buffer start
mov [esp + 8 + 4], edx ; buffer size
mov [edi + UDP_Packet.Length], cx
rol [edi + UDP_Packet.Length], 8
mov [edi + UDP_header.Length], cx
rol [edi + UDP_header.Length], 8
pop esi
push edi ecx
sub ecx, sizeof.UDP_Packet
add edi, sizeof.UDP_Packet
sub ecx, sizeof.UDP_header
add edi, sizeof.UDP_header
shr ecx, 2
rep movsd
mov ecx, [esp]
@ -270,11 +271,11 @@ UDP_output:
rep movsb
pop ecx edi
pop dword [edi + UDP_Packet.SourcePort]
pop dword [edi + UDP_header.SourcePort]
; Checksum
mov esi, edi
mov [edi + UDP_Packet.Checksum], 0
mov [edi + UDP_header.Checksum], 0
UDP_checksum (edi-4), (edi-8) ; TODO: fix this, IPv4 packet could have options..
inc [UDP_PACKETS_TX]