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changes in net branch:

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Some more changes in TCP code.
I should perhaps read the full RFC before doing any further changes..

git-svn-id: svn://kolibrios.org@1255 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr 2009-11-08 21:44:04 +00:00
parent 2fcdc75ae8
commit 30373c2ee1
2 changed files with 27 additions and 22 deletions
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2
kernel/branches/net/network/socket.inc
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@ -866,7 +866,7 @@ socket_check_port:
align 4
socket_internal_receiver:
DEBUGF 1,"Internal socket receiver: buffer %x, offset: %x\n", esi, edi
DEBUGF 1,"Internal socket receiver: buffer %x, offset: %x size=%u socket: %x\n", esi, edi, ecx, eax
push edi ; offset
push ecx ; size

47
kernel/branches/net/network/tcp.inc
View File

@ -563,8 +563,8 @@ TCP_send_ack:
push edx eax
lea esi, [esi + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.SND_NXT]
inc_INET esi
; lea esi, [esi + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.SND_NXT]
; inc_INET esi
; Now, calculate the checksum
pushw TCP_Packet.Options shl 8
@ -598,6 +598,11 @@ TCP_send_ack:
;---------- TCB state handlers start here
align 4
stateTCB_LISTEN:
@ -676,6 +681,9 @@ stateTCB_SYN_SENT:
mov [ebx + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.RCV_NXT], eax ; Update our recv.nxt field
mov [ebx + SOCKET_head.lock], 0
lea esi, [ebx + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.SND_NXT]
inc_INET esi
; Send an ACK
mov eax, ebx
pop ebx
@ -726,6 +734,10 @@ stateTCB_ESTABLISHED:
DEBUGF 1,"TCBStateHandler: Established\n"
mov eax, [ebx + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.RCV_NXT]
cmp eax, [edx + TCP_Packet.SequenceNumber]
jne .exit
; Here we are expecting data, or a request to close
; OR both...
@ -749,32 +761,20 @@ stateTCB_ESTABLISHED:
; First, look at the incoming window. If this is less than or equal to 1024,
; Set the socket window timer to 1. This will stop an additional Packets being queued.
; ** I may need to tweak this value, since I do not know how many Packets are already queued
push ecx
mov cx, [edx + TCP_Packet.Window]
xchg cl, ch
cmp cx, 1024
ja @f
mov [ebx + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.wndsizeTimer], 1
@@: ; OK, here is the deal
; My recv.nct field holds the seq of the expected next rec byte
; if the recevied sequence number is not equal to this, do not
; increment the recv.nxt field, do not copy data - just send a
; repeat ack.
; recv.nxt is in dword [edx+24], in inet format
; recv seq is in [sktAddr]+56, in inet format
; just do a comparision
mov ecx, [ebx + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.RCV_NXT]
cmp [ebx + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.state], TCB_CLOSE_WAIT
jne @f
mov ecx, eax
@@: cmp ecx, [edx + TCP_Packet.SequenceNumber]
jne .ack
@@:
pop ecx
test ecx, ecx
jnz .data
jnz .data ; Read data, if any
lea esi, [ebx + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.SND_NXT]
inc_INET esi
; If we had received a fin, we need to ACK it.
cmp [ebx + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.state], TCB_CLOSE_WAIT
@ -782,10 +782,15 @@ stateTCB_ESTABLISHED:
jmp .exit
.data:
;;;
lea esi, [ebx + SOCKET_head.end + IPv4_SOCKET.end + TCP_SOCKET.SND_NXT]
add_INET esi
DEBUGF 1,"Got data!\n"
mov esi, [esp + 4]
sub edx, esi
mov edi, edx
mov eax, ebx
call socket_internal_receiver
.ack: