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A2osX/LIB/LIBTCPIP.S.SKT.txt
Rémy GIBERT 04510ec5bf Kernel 0.9.2
2018-11-09 14:29:23 +01:00

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NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
.LIST OFF
*/--------------------------------------
* # Socket
* Create a new socket
* ## C
* `hFD socket(short int type, short int protocol);`
* ## ASM
* **In:**
* `>PUSHB protocol`
* `lda type`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.socket`
* ## RETURN VALUE
* CC: A = hSOCKET
* CS: A = EC
*\--------------------------------------
SKT.Socket tax
>PULLA get protocol (RAW)
SKT.Socket.I jmp (J.SKT.Socket,x)
SKT.Socket.RAW ldy #S.SOCKET
bra SKT.Socket.DSOCK
SKT.Socket.DGRAM
lda #S.IP.PROTOCOL.UDP
ldy #S.SOCKET
bra SKT.Socket.DSOCK
SKT.Socket.SEQPACKET
lda #S.IP.PROTOCOL.TCP
ldy #S.SOCKET.TCP
SKT.Socket.DSOCK
stx FD.DSOCK+S.SOCKET.T save type
sta FD.DSOCK+S.SOCKET.PROTO ICMP,UDP,TCP
lda #0 Y = socket.size
>SYSCALL GetMem0
bcs .9
>STYA ZPTmpPtr1
stx FD.DSOCK+S.FD.DSOCK.HSKT
jsr SKT.Socket.FindFree
bcs .9
ldy #FD.DSOCK.SIZE-1
.1 lda FD.DSOCK,y
sta (ZPTmpPtr1),y
dey
bpl .1
txa
clc
.9 rts
SKT.Socket.STREAM
lda #S.IP.PROTOCOL.TCP
ldy #S.SOCKET.TCP
stx FD.SSOCK+S.SOCKET.T save type
sta FD.SSOCK+S.SOCKET.PROTO
lda #0 Y = socket.size
>SYSCALL GetMem0
bcs .9
>STYA ZPTmpPtr1
stx FD.SSOCK+S.FD.SSOCK.HSKT
jsr SKT.Socket.FindFree
bcs .9
ldy #FD.SSOCK.SIZE-1
.1 lda FD.SSOCK,y
sta (ZPTmpPtr1),y
dey
bpl .1
txa
clc
.9 rts
SKT.Socket.FindFree
ldy #0
.1 lda SKT.TABLE,y
beq .2
iny
cpy #K.SKTTABLE.SIZE
bne .1
txa
>SYSCALL freemem
lda #E.OOH
sec
rts
.2 txa
sta SKT.TABLE,y
clc
rts
*/--------------------------------------
* # Bind
* bind a name to a socket
* ## C
* `int bind(hFD fd, const struct sockaddr *addr);`
* ## ASM
* **In:**
* `>PUSHW addr`
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.socket`
* ## RETURN VALUE
* CC: A = hSOCKET
* CS: A = EC
*\--------------------------------------
SKT.bind >SYSCALL GetMemPtr
>STYA ZPPtrSKT
jsr SKT.PullLocAddr
lda SKT.LOC.ADDR+S.SOCKADDR.PORT
bne .1
ldx SKT.LOC.ADDR+S.SOCKADDR.PORT+1
bne .1
jsr GetDynPort
sta SKT.LOC.ADDR+S.SOCKADDR.PORT
stx SKT.LOC.ADDR+S.SOCKADDR.PORT+1
.1 ldx #0
.2 lda SKT.TABLE,x
beq .7
phx
>SYSCALL GetMemPtr
>STYA ZPTmpPtr1
plx
ldy #S.SOCKET.AF
lda (ZPTmpPtr1),y
cmp #AF.INET
bne .7
ldy #S.SOCKET.LOC.ADDR
.3 lda (ZPTmpPtr1),y
cmp SKT.LOC.ADDR+S.SOCKADDR.ADDR-S.SOCKET.LOC.ADDR,y
bne .7
iny
cpy #S.SOCKET.LOC.PORT+2
bne .3
lda #ERR.SKT.BUSY
* sec
rts
.7 inx
cpx #K.SKTTABLE.SIZE
bne .2
jmp SKT.SetLocAddr
*/--------------------------------------
* # Connect
* Initiate a connection on a socket
* ## C
* `int connect(hFD fd, const struct sockaddr *addr);`
* ## ASM
* **In:**
* `>PUSHW addr`
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.socket`
* ## RETURN VALUE
* CC: A = hSOCKET
* CS: A = EC
*\--------------------------------------
SKT.connect >SYSCALL GetMemPtr
>STYA ZPPtrSKT
jsr SKT.PullRemAddr
ldy #S.SOCKET.T
lda (ZPPtrSKT),y
tax
jmp (J.SKT.connect,x)
SKT.connect.RAW
SKT.connect.DGRAM
jmp SKT.SetRemAddr
SKT.connect.STREAM
SKT.connect.SEQPACKET
jsr SKT.SetRemAddr
jsr SKT.NewTCB
bcs SKT.connect.99
lda #S.TCP.OPTIONS.SYN
jsr TCP.OUT.SendOptA Send SYN
bcs .9
lda #S.SOCKET.TCP.S.SYNSENT
sta SKT.Cache+S.SOCKET.TCP.S
jmp SKT.StoreTCB
.9 lda #ERR.SKT.BAD
sec
SKT.connect.99 rts
*/--------------------------------------
* # Listen
* Listen for connections on a socket
* ## C
* `int listen(hFD fd);`
* ## ASM
* **In:**
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.listen`
* ## RETURN VALUE
* CS: A = EC
*\--------------------------------------
SKT.listen >SYSCALL GetMemPtr
>STYA ZPPtrSKT
ldy #S.SOCKET.T
lda (ZPPtrSKT),y
cmp #S.SOCKET.T.SEQPACKET+1
bcc .9
ldy #S.SOCKET.TCP.S
lda (ZPPtrSKT),y
bne .9
lda #S.SOCKET.TCP.S.LISTEN
sta (ZPPtrSKT),y
ldy #S.SOCKET.O
lda #S.SOCKET.O.ACCEPTCONN
sta (ZPPtrSKT),y
clc
rts
.9 lda #ERR.SKT.BAD
sec
rts
*/--------------------------------------
* # Accept
* Accept a connection on a socket
* ## C
* `hFD Accept(hFD fd);`
* ## ASM
* **In:**
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.accept`
* ## RETURN VALUE
* A = hSocket
*\--------------------------------------
SKT.Accept >SYSCALL GetMemPtr
>STYA ZPPtrSKT
ldy #S.SOCKET.O
lda (ZPPtrSKT),y
and #S.SOCKET.O.ACCEPTCONN
beq .99
ldy #S.SOCKET.HQ.TAIL
lda (ZPPtrSKT),y
ldy #S.SOCKET.HQ.HEAD
cmp (ZPPtrSKT),y
beq .9 CS
pha
inc
cmp #S.SOCKET.HQ.MAX
bne .1
lda #0
.1 ldy #S.SOCKET.HQ.TAIL
sta (ZPPtrSKT),y
pla
clc
adc #S.SOCKET.HQ
tay
lda (ZPPtrSKT),y
clc
rts
.99 lda #ERR.SKT.BAD
sec
.9 rts
*/--------------------------------------
* # Shutdown
* Close socket
* ## C
* `int shutdown(int fd);`
* ## ASM
* **In:**
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.shutdown`
* ## RETURN VALUE
*\--------------------------------------
SKT.shutdown pha
>SYSCALL GetMemPtr
>STYA ZPPtrSKT
ldy #S.SOCKET.O
lda (ZPPtrSKT),y
and #S.SOCKET.O.ACCEPTCONN
bne SKT.shutdown.LISTEN
ldy #S.SOCKET.T
lda (ZPPtrSKT),y
tax
jmp (J.SKT.shutdown,x)
SKT.shutdown.LISTEN
SKT.shutdown.RAW
SKT.shutdown.DGRAM
SKT.shutdown.SEQPACKET
.1 ldy #S.SOCKET.HQ.TAIL
lda (ZPPtrSKT),y
ldy #S.SOCKET.HQ.HEAD
cmp (ZPPtrSKT),y
beq .3 No frame in Queue, close..
pha save tail...
clc
adc #S.SOCKET.HQ
tax
pla
inc
cmp #S.SOCKET.HQ.MAX
beq .2
lda #0
.2 ldy #S.SOCKET.HQ.TAIL
sta (ZPPtrSKT),y
txa
tay
lda (ZPPtrSKT),y
>SYSCALL FreeMem
bra .1
.3 pla get hFD...
ldx #0
.4 cmp SKT.TABLE,x
beq .5
inx
cpx #K.SKTTABLE.SIZE
bne .4
.5 stz SKT.TABLE,x
>SYSCALL freemem
clc
rts
SKT.shutdown.STREAM
pla
ldy #S.SOCKET.TCP.S
lda (ZPPtrSKT),y
cmp #S.SOCKET.TCP.S.CLWAIT
bne .1
lda #S.SOCKET.TCP.S.LASTACK
bra .2
.1 lda #S.SOCKET.TCP.S.FINWT1
.2 sta (ZPPtrSKT),y
ldy #S.SOCKET.TCP.O
lda (ZPPtrSKT),y
ora #S.TCP.OPTIONS.FIN+S.TCP.OPTIONS.ACK
sta (ZPPtrSKT),y
jmp TCP.OUT
*/--------------------------------------
* # Read (STREAM)
* ## C
* `int skt.read(hFD fd, void *buf, int count);`
* ## ASM
* **In:**
* `>PUSHWI count`
* `>PUSHW buf`
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.skt.read`
* ## RETURN VALUE
* CC: Y,A = bytes read
* CS: A = EC
*\--------------------------------------
SKT.Read jsr SKT.PullhFDDataInPtrLen
ldy #S.SOCKET.T
lda (ZPPtrSKT),y
cmp #S.SOCKET.T.STREAM
bne .90 bad skt
ldy #S.SOCKET.O
lda (ZPPtrSKT),y
and #S.SOCKET.O.ACCEPTCONN
bne .90 Bad Skt
ldy #S.SOCKET.TCP.S
lda (ZPPtrSKT),y
cmp #S.SOCKET.TCP.S.ESTBLSH
bcc .92 Not yet established...no data
cmp #S.SOCKET.TCP.S.FINWT2
bcs .91 closing...IO err
jsr SKT.GetDataFromSktIn
rts if CS, No data...
.90 lda #ERR.SKT.BAD
sec
rts
.91 lda #MLI.E.IO
sec
rts
.92 lda #0
sec
.99 rts
*/--------------------------------------
* # Write (STREAM)
* ## C
* `int skt.write(hFD fd, const void *buf, int count);`
* ## ASM
* **In:**
* `>PUSHWI count`
* `>PUSHW buf`
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.skt.write`
* ## RETURN VALUE
* CC: Y,A = bytes written
* CS: A = EC
*\--------------------------------------
SKT.Write jsr SKT.PullhFDDataInPtrLen
ldy #S.SOCKET.T
lda (ZPPtrSKT),y
cmp #S.SOCKET.T.STREAM
bne .99
ldy #S.SOCKET.O
lda (ZPPtrSKT),y
and #S.SOCKET.O.ACCEPTCONN
bne .99
ldy #S.SOCKET.TCP.S
lda (ZPPtrSKT),y
cmp #S.SOCKET.TCP.S.ESTBLSH
bcc .90 Not yet established...no data
jsr SKT.AddDataToSktOut will call SKT.GetTCB
bcs .90
jsr TCP.OUT.I SKT.GetTCB called, try to push, ignore error....
clc
rts
.90 lda #0 no data transfered
sec
rts
.91 lda #MLI.E.IO
sec
rts
.99 lda #ERR.SKT.BAD
sec
rts
*/--------------------------------------
* # Recv (RAW,DGRAM,SEQPACKET)
* # RecvFrom (RAW,DGRAM,SEQPACKET)
* ## C
* `hMem recv(hFD fd);`
* `hMem recvfrom(hFD fd, struct sockaddr *addr);`
* ## ASM
* **In:**
* `>PUSHW addr` (RecvFrom)
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.skt.Recv`
* ## RETURN VALUE
* CC: A = hMem
* CS: A = EC
*\--------------------------------------
SKT.RecvFrom pha
>PULLW ZPTmpPtr1 addr
pla
sec
.HS 90 BCC
SKT.Recv clc
php
>SYSCALL GetMemPtr
>STYA ZPPtrSKT
ldy #S.SOCKET.T
lda (ZPPtrSKT),y
cmp #S.SOCKET.T.STREAM
beq .99
ldy #S.SOCKET.HQ.TAIL
lda (ZPPtrSKT),y
tax
ldy #S.SOCKET.HQ.HEAD
cmp (ZPPtrSKT),y
beq .90
inc
cmp #S.SOCKET.HQ.MAX
bne .1
lda #0
.1 ldy #S.SOCKET.HQ.TAIL
sta (ZPPtrSKT),y
txa
clc
adc #S.SOCKET.HQ
tay
lda (ZPPtrSKT),y
plp
bcc .9 Exit with CC and A=hFrame
pha
>SYSCALL GetMemPtr
>STYA ZPFrameInPtr
ldy #S.IP.SRC
.2 lda (ZPFrameInPtr),y
sta SA.REMOTE+S.SOCKADDR.ADDR-S.IP.SRC,y
iny
cpy #S.IP.SRC+4
bne .2
ldy #S.IP.PROTOCOL
lda (ZPFrameInPtr),y
cmp #S.IP.PROTOCOL.ICMP
bne .3
ldy #S.ICMP.IDENTIFIER
bra .7
.3 cmp #S.IP.PROTOCOL.TCP
beq .6
cmp #S.IP.PROTOCOL.UDP
bne .8
.6 ldy #S.TCPUDP.SRCPORT
.7 lda (ZPFrameInPtr),y
sta SA.REMOTE+S.SOCKADDR+1
iny
lda (ZPFrameInPtr),y
sta SA.REMOTE+S.SOCKADDR
.8 lda #S.SOCKADDR-1
.80 lda SA.REMOTE,y
sta (ZPTmpPtr1),y
dey
bpl .80
pla
clc
.9 rts
.99 plp
lda #ERR.SKT.BAD
sec
rts
.90 plp
lda #0 no data
sec
rts
*/--------------------------------------
* # Send (RAW,DGRAM,SEQPACKET)
* # SendTo (RAW,DGRAM,SEQPACKET)
* ## C
* `int skt.send(hFD fd, const void *buf, int count);`
* `int skt.sendto(hFD fd, const void *buf, int count, const struct sockaddr *addr);`
* ## ASM
* **In:**
* `>PUSHW addr` (SendTo)
* `>PUSHWI count`
* `>PUSHW buf`
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.skt.send`
* ## RETURN VALUE
* CC: Y,A = bytes written
* CS: A = EC
*\--------------------------------------
SKT.SendTo sec
.HS 90 BCC
SKT.Send clc
php
jsr SKT.PullhFDDataInPtrLen
plp
bcc .1
jsr SKT.PullRemAddr
jsr SKT.SetRemAddr
.1 ldy #S.SOCKET.T
lda (ZPPtrSKT),y
tax
jmp (J.SKT.send,x)
*--------------------------------------
SKT.Send.RAW ldy #S.SOCKET.PROTO
lda (ZPPtrSKT),y
tax
>LDYA ZPDataInLen
jsr FRM.NewIP
bcs SKT.Send.9
bra SKT.Send.DGRAM.8
*--------------------------------------
SKT.Send.DGRAM ldx #S.IP.PROTOCOL.UDP
>LDYA ZPDataInLen
jsr FRM.NewIP
bcs SKT.Send.9
jsr SKT.SetFrameOutTCPUDPPorts
SKT.Send.DGRAM.8
jsr SKT.SetFrameOutDstIP
jsr SKT.CopyDataInToOut
jmp FRM.SendIP
*--------------------------------------
SKT.Send.STREAM lda #ERR.SKT.BAD
sec
SKT.Send.9 rts
*--------------------------------------
SKT.Send.SEQPACKET
bra *
*/--------------------------------------
* # GetSockOpt
* Set Socket Options
* ## C
* `int getsockopt(hFD fd);`
* ## ASM
* **In:**
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.GetSockOpt`
* ## RETURN VALUE
*\--------------------------------------
SKT.getsockopt >SYSCALL GetMemPtr
>STYA ZPPtrSKT
ldy #S.SOCKET.O
lda (ZPPtrSKT),y
* clc
rts
*/--------------------------------------
* # SetSockOpt
* Set Socket Options
* ## C
* `int setsockopt(hFD fd, short int opts);`
* ## ASM
* **In:**
* `>PUSHWI opts`
* `lda fd`
* `>LIBCALL hLIBTCPIP,LIBTCPIP.SetSockOpt`
* ## RETURN VALUE
*\--------------------------------------
SKT.setsockopt >SYSCALL GetMemPtr
>STYA ZPPtrSKT
>PULLA
ldy #S.SOCKET.O
ora (ZPPtrSKT),y
sta (ZPPtrSKT),y
* clc
rts
*/--------------------------------------
* # GetTable
* Get socket table
* ## C
* `void * gettable();`
* ## ASM
* **In:**
* `>LIBCALL hLIBTCPIP,LIBTCPIP.GetTable`
* ## RETURN VALUE
*\--------------------------------------
SKT.GetTable >LDYA L.SKT.Table
clc
rts
*--------------------------------------
SKT.PullhFDDataInPtrLen
>SYSCALL GetMemPtr
>STYA ZPPtrSKT
>PULLW ZPDataInPtr !!!DataOut trashed when sending ACK in TCP.OUT
>PULLW ZPDataInLen !!!use DataInPtr/Len
rts
*--------------------------------------
SKT.PullLocAddr >PULLW ZPTmpPtr1
ldy #S.SOCKADDR-1
.1 lda (ZPTmpPtr1),y
sta SKT.LOC.ADDR,y
dey
bpl .1
rts
*--------------------------------------
SKT.PullRemAddr >PULLW ZPTmpPtr1
ldy #S.SOCKADDR-1
.1 lda (ZPTmpPtr1),y
sta SKT.REM.ADDR,y
dey
bpl .1
rts
*--------------------------------------
SKT.SetLocAddr ldy #S.SOCKET.LOC.PORT+1
.1 lda SKT.LOC.ADDR+S.SOCKADDR.ADDR-S.SOCKET.LOC.ADDR,y
sta (ZPPtrSKT),y
dey
cpy #S.SOCKET.LOC.ADDR
bcs .1
rts
*--------------------------------------
SKT.SetRemAddr ldy #S.SOCKET.REM.PORT+1
.1 lda SKT.REM.ADDR+S.SOCKADDR.ADDR-S.SOCKET.REM.ADDR,y
sta (ZPPtrSKT),y
dey
cpy #S.SOCKET.REM.ADDR
bcs .1
rts
*--------------------------------------
SKT.FindMatchingLocRem
.DO IPDEBUG=1
jsr FRM.Dump
.FIN
ldx #0
.1 lda SKT.TABLE,x
beq .8
phx
>SYSCALL GetMemPtr
>STYA ZPPtrSKT
.DO IPDEBUG=1
jsr SKT.Dump
.FIN
plx
ldy #S.SOCKET.AF
lda (ZPPtrSKT),y
cmp #AF.INET
bne .8
ldy #S.SOCKET.LOC.ADDR
.2 lda (ZPPtrSKT),y
bne .4
ldy #S.SOCKET.LOC.PORT bound to 0.0.0.0,check only LOC port
.3 lda (ZPPtrSKT),y
.4 cmp SKT.LOC.ADDR+S.SOCKADDR.ADDR-S.SOCKET.LOC.ADDR,y
bne .8
iny
cpy #S.SOCKET.LOC.PORT+2
bne .3
ldy #S.SOCKET.O
lda (ZPPtrSKT),y
and #S.SOCKET.O.ACCEPTCONN
beq .6
ldy #S.TCP.OPTIONS Listening, only SYN packet....
lda (ZPFrameInPtr),y
cmp #S.TCP.OPTIONS.SYN
beq .7 SYN recieved on a LISTEN socket, ok
bne .8 bad packet for this listening
.6 lda SKT.REM.ADDR+S.SOCKADDR.ADDR
cmp #$ff FF.FF.FF.FF, Broadcast ?
bne .41
* ldy #S.SOCKET.O
lda (ZPPtrSKT),y
and #S.SOCKET.O.BROADCAST
beq .9 this socket does not accept broadcast
bra .43
.41 ldy #S.SOCKET.REM.ADDR
.5 lda (ZPPtrSKT),y
cmp #$ff accept 255.255.255.255 ?
bne .42
.43 ldy #S.SOCKET.REM.PORT Boradcast, check port only
.42 lda (ZPPtrSKT),y
cmp SKT.REM.ADDR+S.SOCKADDR.ADDR-S.SOCKET.REM.ADDR,y
bne .8 wrong remote host, exit....
iny
cpy #S.SOCKET.REM.PORT+2
bne .42
.7 stx SKT.Index x = SKT.TABLE index
clc
rts
.8 inx
cpx #K.SKTTABLE.SIZE
bne .1
.9 sec
rts
*--------------------------------------
SKT.AddToQueueA pha
ldy #S.SOCKET.HQ.HEAD
lda (ZPPtrSKT),y
tax
inc
cmp #S.SOCKET.HQ.MAX
bne .1
lda #0
.1 ldy #S.SOCKET.HQ.TAIL
cmp (ZPPtrSKT),y
beq .9 Queue full!!
ldy #S.SOCKET.HQ.HEAD
sta (ZPPtrSKT),y
txa
clc
adc #S.SOCKET.HQ
tay
pla
sta (ZPPtrSKT),y
clc
rts
.9 pla dicard hFrame
* sec
rts
*--------------------------------------
* From TCP.IN
* Src : ZPDataInPtr/ZPDataInLen
* Dst : hInMem/INHEAD
*--------------------------------------
SKT.AddDataToSktIn
ldx SKT.Cache+S.SOCKET.TCP.INFREE
cpx ZPDataInLen
lda SKT.Cache+S.SOCKET.TCP.INFREE+1
sbc ZPDataInLen+1
bcc .9 Not enough room in Q
ldy #S.TCP.SEQNUM+3
ldx #3
.10 lda (ZPFrameInPtr),y
eor SKT.Cache+S.SOCKET.TCP.INLASTSEQNUM,x
bne .9
dey
dex
bpl .10
ldy #S.SOCKET.SQ.hInMem
lda (ZPPtrSKT),y
>SYSCALL GetMemPtr
>STYA ZPTmpPtr1 Make ZPTmpPtr1=buffer base
lda ZPTmpPtr1
clc
adc SKT.Cache+S.SOCKET.TCP.INHEAD
sta ZPTmpPtr2
lda ZPTmpPtr1+1
adc SKT.Cache+S.SOCKET.TCP.INHEAD+1
sta ZPTmpPtr2+1 Make ZPTmpPtr2=base+Tail
lda ZPDataInLen
eor #$FF
tax
lda ZPDataInLen+1
eor #$FF
pha
ldy #0
.1 inx
bne .2
pla
inc
beq .8
pha
.2 lda (ZPDataInPtr),y
sta (ZPTmpPtr2)
iny
bne .3
inc ZPDataInPtr+1
.3 inc ZPTmpPtr2
bne .4
inc ZPTmpPtr2+1
.4 inc SKT.Cache+S.SOCKET.TCP.INHEAD
bne .1
inc SKT.Cache+S.SOCKET.TCP.INHEAD+1
lda SKT.Cache+S.SOCKET.TCP.INHEAD+1
cmp /K.TCP.WSIZE
bne .1
stz SKT.Cache+S.SOCKET.TCP.INHEAD+1
lda ZPTmpPtr1 Dst Ptr=Buffer Base
sta ZPTmpPtr2
lda ZPTmpPtr1+1
sta ZPTmpPtr2+1
bra .1
.9 sec
rts
.8 >SBC16 SKT.Cache+S.SOCKET.TCP.INFREE,ZPDataInLen
>ADC16 SKT.Cache+S.SOCKET.TCP.INUSED,ZPDataInLen
clc
lda SKT.Cache+S.SOCKET.TCP.INLASTSEQNUM+3
adc ZPDataInLen
sta SKT.Cache+S.SOCKET.TCP.INLASTSEQNUM+3
lda SKT.Cache+S.SOCKET.TCP.INLASTSEQNUM+2
adc ZPDataInLen+1
sta SKT.Cache+S.SOCKET.TCP.INLASTSEQNUM+2
bcc .80
inc SKT.Cache+S.SOCKET.TCP.INLASTSEQNUM+1
bne .80
inc SKT.Cache+S.SOCKET.TCP.INLASTSEQNUM
.80 clc
rts
*--------------------------------------
* From SKT.Read
* In:
* Src : hInMem/INTAIL
* Dst : ZPDataOutPtr/ZPDataOutLen
* Out:
* Y,A = bytes read
*--------------------------------------
SKT.GetDataFromSktIn
jsr SKT.GetTCB
lda SKT.Cache+S.SOCKET.TCP.INUSED
ora SKT.Cache+S.SOCKET.TCP.INUSED+1
bne .10
sec
rts A=0,NO DATA
.10 ldy #S.SOCKET.SQ.hInMem
lda (ZPPtrSKT),y
>SYSCALL GetMemPtr
>STYA ZPTmpPtr1 Make ZPTmpPtr1=buffer base
lda ZPTmpPtr1
clc
adc SKT.Cache+S.SOCKET.TCP.INTAIL
sta ZPTmpPtr2
lda ZPTmpPtr1+1
adc SKT.Cache+S.SOCKET.TCP.INTAIL+1
sta ZPTmpPtr2+1
lda ZPDataInLen
eor #$FF
tax
lda ZPDataInLen+1
eor #$FF
pha
stz ZPTmpPtr3 Reset byte counter
stz ZPTmpPtr3+1
ldy #0
.1 inx Check if room left in dest buffer
bne .2
pla
inc
beq .8
pha
.2 lda SKT.Cache+S.SOCKET.TCP.INTAIL
eor SKT.Cache+S.SOCKET.TCP.INHEAD
bne .3
lda SKT.Cache+S.SOCKET.TCP.INTAIL+1
eor SKT.Cache+S.SOCKET.TCP.INHEAD+1
beq .7
.3 lda (ZPTmpPtr2)
pha
inc SKT.Cache+S.SOCKET.TCP.INTAIL
bne .4
inc SKT.Cache+S.SOCKET.TCP.INTAIL+1
lda SKT.Cache+S.SOCKET.TCP.INTAIL+1
cmp /K.TCP.WSIZE
bne .4
stz SKT.Cache+S.SOCKET.TCP.INTAIL+1
lda ZPTmpPtr1
sta ZPTmpPtr2
lda ZPTmpPtr1+1
sta ZPTmpPtr2+1
bra .5
.4 inc ZPTmpPtr2
bne .5
inc ZPTmpPtr2+1
.5 pla get back data....
.6 sta (ZPDataInPtr),y
iny
bne .61
inc ZPDataInPtr+1
.61 inc ZPTmpPtr3
bne .1
inc ZPTmpPtr3+1
bra .1
.7 pla discard byte counter HI
.8 lda ZPTmpPtr3 Do we have transfered something?
ora ZPTmpPtr3+1
beq .9
>ADC16 SKT.Cache+S.SOCKET.TCP.INFREE,ZPTmpPtr3
>SBC16 SKT.Cache+S.SOCKET.TCP.INUSED,ZPTmpPtr3
lda SKT.Cache+S.SOCKET.TCP.OUTACKNUM+3
clc
adc ZPTmpPtr3
sta SKT.Cache+S.SOCKET.TCP.OUTACKNUM+3
lda SKT.Cache+S.SOCKET.TCP.OUTACKNUM+2
adc ZPTmpPtr3+1
sta SKT.Cache+S.SOCKET.TCP.OUTACKNUM+2
bcc .80
inc SKT.Cache+S.SOCKET.TCP.OUTACKNUM+1
bne .80
inc SKT.Cache+S.SOCKET.TCP.OUTACKNUM
.80 jsr SKT.StoreTCB
ldy #S.SOCKET.TCP.O
lda (ZPPtrSKT),y
ora #S.TCP.OPTIONS.ACK
sta (ZPPtrSKT),y
jsr TCP.OUT.I SKT.GetTCB already called, Try to ACK read DATA
>LDYA ZPTmpPtr3
clc
rts
.9
* lda #0
sec
rts
*--------------------------------------
* From SKT.Write.TCP
* Src : ZPDataInPtr/ZPDataInLen
* Dst : hOutMem/OUTHEAD
*--------------------------------------
SKT.AddDataToSktOut
jsr SKT.GetTCB
ldx SKT.Cache+S.SOCKET.TCP.OUTFREE
cpx ZPDataInLen
lda SKT.Cache+S.SOCKET.TCP.OUTFREE+1
sbc ZPDataInLen+1
bcc .9 Not enough room in Q
ldy #S.SOCKET.SQ.hOutMem
lda (ZPPtrSKT),y
>SYSCALL GetMemPtr
>STYA ZPTmpPtr1 Make ZPTmpPtr1=buffer base
lda ZPTmpPtr1
clc
adc SKT.Cache+S.SOCKET.TCP.OUTHEAD
sta ZPTmpPtr2
lda ZPTmpPtr1+1
adc SKT.Cache+S.SOCKET.TCP.OUTHEAD+1
sta ZPTmpPtr2+1 Make ZPTmpPtr2=base+Tail
lda ZPDataInLen
eor #$FF
tax
lda ZPDataInLen+1
eor #$FF
pha
ldy #0
.1 inx
bne .2
pla
inc
beq .8
pha
.2 lda (ZPDataInPtr),y
sta (ZPTmpPtr2)
iny
bne .3
inc ZPDataInPtr+1
.3 inc ZPTmpPtr2
bne .4
inc ZPTmpPtr2+1
.4 inc SKT.Cache+S.SOCKET.TCP.OUTHEAD
bne .1
inc SKT.Cache+S.SOCKET.TCP.OUTHEAD+1
lda SKT.Cache+S.SOCKET.TCP.OUTHEAD+1
cmp /K.TCP.WSIZE
bne .1
stz SKT.Cache+S.SOCKET.TCP.OUTHEAD+1
lda ZPTmpPtr1 Dst Ptr=Buffer Base
sta ZPTmpPtr2
lda ZPTmpPtr1+1
sta ZPTmpPtr2+1
bra .1
.9 sec
rts
.8 >SBC16 SKT.Cache+S.SOCKET.TCP.OUTFREE,ZPDataInLen
>ADC16 SKT.Cache+S.SOCKET.TCP.OUTUSED,ZPDataInLen
>ADC16 SKT.Cache+S.SOCKET.TCP.OUTTOSEND,ZPDataInLen
jmp SKT.StoreTCB
*--------------------------------------
* From TCP.OUT
* Src : hOutMem/OUTTAIL
* Dst : ZPDataOutPtr/ZPDataOutLen
*--------------------------------------
SKT.GetDataFromSktOut
ldy #S.SOCKET.SQ.hOutMem
lda (ZPPtrSKT),y
>SYSCALL GetMemPtr
>STYA ZPTmpPtr1 Make ZPTmpPtr1=buffer base
lda ZPTmpPtr1
clc
adc SKT.Cache+S.SOCKET.TCP.OUTTAILNEXT
sta ZPTmpPtr2 Make ZPTmpPtr2=base+nexttail
lda ZPTmpPtr1+1
adc SKT.Cache+S.SOCKET.TCP.OUTTAILNEXT+1
sta ZPTmpPtr2+1
lda ZPDataOutLen
eor #$FF
tax
lda ZPDataOutLen+1
eor #$FF
pha
ldy #0
.1 inx
bne .2
pla
inc
beq .8
pha
.2 lda (ZPTmpPtr2)
sta (ZPDataOutPtr),y
iny
bne .3
inc ZPDataOutPtr+1
.3 inc ZPTmpPtr2
bne .4
inc ZPTmpPtr2+1
.4 inc SKT.Cache+S.SOCKET.TCP.OUTTAILNEXT
bne .1
inc SKT.Cache+S.SOCKET.TCP.OUTTAILNEXT+1
lda SKT.Cache+S.SOCKET.TCP.OUTTAILNEXT+1
cmp /K.TCP.WSIZE
bne .1
stz SKT.Cache+S.SOCKET.TCP.OUTTAILNEXT+1
lda ZPTmpPtr1 Dst Ptr=Buffer Base
sta ZPTmpPtr2
lda ZPTmpPtr1+1
sta ZPTmpPtr2+1
bra .1
.8 >SBC16 SKT.Cache+S.SOCKET.TCP.OUTTOSEND,ZPDataOutLen
clc
rts
*--------------------------------------
* From TCP.IN
* Src : A,X
* Dst : hOutMem/OUTTAIL
*--------------------------------------
SKT.AckDataToSktOut
ldy #S.TCP.ACKNUM+3 Get new ACK number from FrameIn...
ldx #3 Substract old ACK from socket
sec
.1 lda (ZPFrameInPtr),y
pha
sbc SKT.Cache+S.SOCKET.TCP.OUTSEQNUM,x
sta TmpDWord,x
pla ....and Set SEQ = new SEQ
sta SKT.Cache+S.SOCKET.TCP.OUTSEQNUM,x
dey
dex
bpl .1
lda TmpDWord+3
ldx TmpDWord+2
bne .2
tay
beq .8
.2 clc
adc SKT.Cache+S.SOCKET.TCP.OUTTAIL
sta SKT.Cache+S.SOCKET.TCP.OUTTAIL
txa
adc SKT.Cache+S.SOCKET.TCP.OUTTAIL+1
and /K.TCP.WSIZE-1
sta SKT.Cache+S.SOCKET.TCP.OUTTAIL+1
lda SKT.Cache+S.SOCKET.TCP.OUTFREE
clc
adc TmpDWord+3
sta SKT.Cache+S.SOCKET.TCP.OUTFREE
lda SKT.Cache+S.SOCKET.TCP.OUTFREE+1
adc TmpDWord+2
sta SKT.Cache+S.SOCKET.TCP.OUTFREE+1
lda SKT.Cache+S.SOCKET.TCP.OUTUSED
sec
sbc TmpDWord+3
sta SKT.Cache+S.SOCKET.TCP.OUTUSED
lda SKT.Cache+S.SOCKET.TCP.OUTUSED+1
sbc TmpDWord+2
sta SKT.Cache+S.SOCKET.TCP.OUTUSED+1
.8 rts
*--------------------------------------
SKT.NewTCB ldx #S.SOCKET
.1 stz SKT.Cache,x
inx
cpx #S.SOCKET.TCP
bne .1
>LDYAI K.TCP.WSIZE
>STYA SKT.Cache+S.SOCKET.TCP.INFREE
>SYSCALL getmem
bcs SKT.StoreTCB.RTS
txa
ldy #S.SOCKET.SQ.hInMem
sta (ZPPtrSKT),y
>LDYAI K.TCP.WSIZE
>STYA SKT.Cache+S.SOCKET.TCP.OUTFREE
>SYSCALL getmem
bcs SKT.StoreTCB.RTS
txa
ldy #S.SOCKET.SQ.hOutMem
sta (ZPPtrSKT),y
ldx #3
.2 lda A2osX.TIMER16,x
sta SKT.Cache+S.SOCKET.TCP.OUTNEXTSEQ,x
dex
bpl .2
*--------------------------------------
SKT.StoreTCB ldy #S.SOCKET
.1 lda SKT.Cache,y
sta (ZPPtrSKT),y
iny
cpy #S.SOCKET.TCP
bne .1
clc
SKT.StoreTCB.RTS
rts
*--------------------------------------
SKT.GetTCB ldy #S.SOCKET
.1 lda (ZPPtrSKT),y
sta SKT.Cache,y
iny
cpy #S.SOCKET.TCP
bne .1
rts
*--------------------------------------
SKT.SetFrameOutDstIP
ldy #S.SOCKET.REM.ADDR
ldx #4
.1 lda (ZPPtrSKT),y
pha
iny
dex
bne .1
ldy #S.IP.DST+3
ldx #4
.2 pla
sta (ZPFrameOutPtr),y
dey
dex
bne .2
rts
*--------------------------------------
SKT.SetFrameOutTCPUDPPorts
ldy #S.SOCKET.LOC.PORT
lda (ZPPtrSKT),y
tax
iny
lda (ZPPtrSKT),y
ldy #S.TCPUDP.SRCPORT
sta (ZPFrameOutPtr),y
iny
txa
sta (ZPFrameOutPtr),y
ldy #S.SOCKET.REM.PORT
lda (ZPPtrSKT),y
tax
iny
lda (ZPPtrSKT),y
ldy #S.TCPUDP.DSTPORT
sta (ZPFrameOutPtr),y
iny
txa
sta (ZPFrameOutPtr),y
rts
*--------------------------------------
SKT.CopyDataInToOut
lda ZPDataInPtr+1
pha
lda ZPDataOutPtr+1
pha
lda ZPDataInLen
eor #$ff
tax
lda ZPDataInLen+1
eor #$ff
pha
ldy #0
.1 inx
bne .2
pla
inc
beq .9
pha
.2 lda (ZPDataInPtr),y
sta (ZPDataOutPtr),y
iny
bne .1
inc ZPDataInPtr+1
inc ZPDataOutPtr+1
bne .1
.9 pla
sta ZPDataOutPtr+1
pla
sta ZPDataInPtr+1
rts
MAN
SAVE /A2OSX.SRC/LIB/LIBTCPIP.S.SKT
LOAD /A2OSX.SRC/LIB/LIBTCPIP.S
ASM
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