mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-26 13:49:18 +00:00
663 lines
13 KiB
Plaintext
663 lines
13 KiB
Plaintext
NEW
|
||
PREFIX /A2OSX.BUILD
|
||
AUTO 4,1
|
||
.LIST OFF
|
||
*--------------------------------------
|
||
TCP.IN jsr IP.FillSKT.TemplateSrcDst
|
||
|
||
ldy #S.TCP.SRCPORT
|
||
lda (ZPFrameInPtr),y
|
||
sta SKT.Template+S.SOCKET.DST.PORT+1
|
||
iny
|
||
lda (ZPFrameInPtr),y
|
||
sta SKT.Template+S.SOCKET.DST.PORT
|
||
|
||
ldy #S.TCP.DSTPORT
|
||
lda (ZPFrameInPtr),y
|
||
sta SKT.Template+S.SOCKET.SRC.PORT+1
|
||
iny
|
||
lda (ZPFrameInPtr),y
|
||
sta SKT.Template+S.SOCKET.SRC.PORT
|
||
|
||
lda hSocketTable
|
||
>SYSCALL GetMemPtr
|
||
>STYA ZPPtrSKT
|
||
|
||
ldx #0
|
||
|
||
.3 lda (ZPPtrSKT)
|
||
beq .7
|
||
cmp #S.SOCKET.SOCK.STREAM
|
||
bne .7
|
||
|
||
ldy #S.SOCKET.SRC.ADDR
|
||
|
||
.4 lda SKT.Template,y
|
||
cmp (ZPPtrSKT),y
|
||
bne .7 Not for this socket...
|
||
|
||
iny
|
||
cpy #S.SOCKET.SRC.PORT+2
|
||
bne .4
|
||
|
||
ldy #S.SOCKET.SO
|
||
lda (ZPPtrSKT),y
|
||
and #S.SOCKET.SO.ACCEPTCONN Listening socket?
|
||
beq .5 no, go check if Dst Match
|
||
|
||
ldy #S.TCP.OPTIONS yes, only accept SYN packet
|
||
lda (ZPFrameInPtr),y
|
||
|
||
cmp #S.TCP.OPTIONS.SYN SYN only, if SYN.ACK, pass to regular socket
|
||
beq TCP.IN.JMP.LISTEN
|
||
|
||
.5 ldy #S.SOCKET.DST.ADDR
|
||
|
||
.6 lda SKT.Template,y regular socket, check remote ADDR/PORT
|
||
cmp (ZPPtrSKT),y
|
||
bne .7
|
||
iny
|
||
cpy #S.SOCKET.DST.PORT+2
|
||
bne .6
|
||
|
||
ldy #S.TCP.OPTIONS
|
||
lda (ZPFrameInPtr),y
|
||
and #S.TCP.OPTIONS.RST RST ? go Kill this socket.
|
||
bne TCP.IN.RST
|
||
|
||
ldy #S.SOCKET.TCP.STATUS
|
||
lda (ZPPtrSKT),y
|
||
cmp #S.SOCKET.TCP.STATUS.TIMEWT
|
||
bcs *
|
||
asl
|
||
tax
|
||
|
||
jmp (L.TCP.IN.JMP,x)
|
||
|
||
.7 lda ZPPtrSKT
|
||
clc
|
||
adc #S.SOCKET
|
||
sta ZPPtrSKT
|
||
bcc .8
|
||
inc ZPPtrSKT+1
|
||
|
||
.8 inx
|
||
cpx #K.SKTTABLE.SIZE
|
||
bne .3
|
||
|
||
.9 clc Discard frame
|
||
rts
|
||
*--------------------------------------
|
||
TCP.IN.RST jmp SKT.Destroy
|
||
*--------------------------------------
|
||
TCP.IN.JMP.LISTEN
|
||
lda #S.SOCKET.SOCK.STREAM
|
||
sta SKT.Template+S.SOCKET.SOCK
|
||
stz SKT.Template+S.SOCKET.SO
|
||
stz SKT.Template+S.SOCKET.TCP.STATUS
|
||
|
||
>PUSHW L.SKT.Template
|
||
|
||
jsr SKT.New Assign OUTNEXTSEQ
|
||
bcs .99
|
||
|
||
sty .1+1
|
||
sta .2+1
|
||
txa
|
||
|
||
jsr SKT.AddToQueueA
|
||
|
||
bcs .99 Queued successfully ?
|
||
|
||
.1 lda #$ff
|
||
sta ZPPtrSKT
|
||
.2 lda #$ff
|
||
sta ZPPtrSKT+1
|
||
|
||
ldy #S.TCP.SEQNUM+3 Get Remote SEQ
|
||
ldx #3
|
||
|
||
sec
|
||
|
||
.3 lda (ZPFrameInPtr),y Set OUTACK=SEQ+1 for new socket...
|
||
adc #0
|
||
sta SKT.TCBCache+S.TCB.INLASTSEQNUM,x
|
||
sta SKT.TCBCache+S.TCB.OUTACKNUM,x
|
||
dey
|
||
dex
|
||
bpl .3
|
||
|
||
jsr SKT.StoreTCB
|
||
|
||
jsr ARP.AddFromFrameInPtr
|
||
|
||
lda #S.TCP.OPTIONS.SYN+S.TCP.OPTIONS.ACK
|
||
jsr TCP.OUT.SendOptA SYN recieved, Send SYN.ACK
|
||
bcs .9
|
||
|
||
ldy #S.SOCKET.TCP.STATUS
|
||
lda #S.SOCKET.TCP.STATUS.SYNRCVD
|
||
sta (ZPPtrSKT),y
|
||
|
||
clc
|
||
rts
|
||
|
||
.9 lda #0 error
|
||
sta (ZPPtrSKT) clear this socket
|
||
lda #ERR.SKT.OOS
|
||
.99 rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.SYNSENT
|
||
ldy #S.TCP.OPTIONS SYN Send, only accept SYN.ACK packet, then Send ACK
|
||
lda (ZPFrameInPtr),y
|
||
cmp #S.TCP.OPTIONS.SYN+S.TCP.OPTIONS.ACK
|
||
bne .8
|
||
|
||
jsr SKT.GetTCB
|
||
|
||
ldx #3
|
||
ldy #S.TCP.ACKNUM+3
|
||
|
||
sec Check if ACK=OUTNEXTSEQ+1
|
||
|
||
.1 lda SKT.TCBCache+S.TCB.OUTNEXTSEQ,x
|
||
adc #0
|
||
sta SKT.TCBCache+S.TCB.OUTNEXTSEQ,x
|
||
eor (ZPFrameInPtr),y
|
||
bne .8
|
||
dey
|
||
dex
|
||
bpl .1
|
||
|
||
ldx #3
|
||
ldy #S.TCP.SEQNUM+3
|
||
|
||
sec ACK=SEC+1
|
||
|
||
.2 lda (ZPFrameInPtr),y
|
||
adc #0
|
||
sta SKT.TCBCache+S.TCB.INLASTSEQNUM,x
|
||
sta SKT.TCBCache+S.TCB.OUTACKNUM,x
|
||
dey
|
||
dex
|
||
bpl .2
|
||
|
||
lda #S.TCP.OPTIONS.ACK
|
||
jsr TCP.OUT.SendOptA SYN.ACK recieved, Send, ACK
|
||
bcs .9
|
||
|
||
ldy #S.SOCKET.TCP.STATUS
|
||
lda #S.SOCKET.TCP.STATUS.ESTBLSH
|
||
sta (ZPPtrSKT),y
|
||
|
||
jsr SKT.StoreTCB
|
||
|
||
.8 clc
|
||
.9 rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.SYNRCVD
|
||
ldy #S.TCP.OPTIONS SYN Recieved, SYN.ACK Sent, only accept ACK packet
|
||
lda (ZPFrameInPtr),y
|
||
cmp #S.TCP.OPTIONS.ACK
|
||
bne .8
|
||
|
||
jsr SKT.GetTCB
|
||
|
||
ldx #3
|
||
ldy #S.TCP.ACKNUM+3
|
||
|
||
sec
|
||
|
||
.1 lda SKT.TCBCache+S.TCB.OUTNEXTSEQ,x Check if ACK=OUTNEXTSEQ+1
|
||
adc #0
|
||
sta SKT.TCBCache+S.TCB.OUTSEQNUM,x setup SEQNUM
|
||
sta SKT.TCBCache+S.TCB.OUTNEXTSEQ,x ...and update NEXTSEQ
|
||
eor (ZPFrameInPtr),y
|
||
bne .8
|
||
dey
|
||
dex
|
||
bpl .1
|
||
|
||
jsr SKT.StoreTCB
|
||
bcs .9
|
||
|
||
ldy #S.SOCKET.TCP.STATUS
|
||
lda #S.SOCKET.TCP.STATUS.ESTBLSH
|
||
sta (ZPPtrSKT),y
|
||
|
||
.8 clc
|
||
.9 rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.ESTBLSH
|
||
jsr SKT.GetTCB
|
||
|
||
ldy #S.TCP.OPTIONS
|
||
lda (ZPFrameInPtr),y
|
||
and #S.TCP.OPTIONS.ACK Remote side ACKed data ?
|
||
beq .1
|
||
|
||
jsr SKT.AckDataToSktOut Yes, Discard sent data
|
||
jsr SKT.StoreTCB and update SKT
|
||
|
||
.1 jsr TCP.IN.SetDataInPtrAndLen
|
||
|
||
lda ZPDataInLen Incoming Data in this frame ?
|
||
ora ZPDataInLen+1
|
||
beq .2 No data, ...
|
||
|
||
jsr SKT.AddDataToSktIn yes, queue data if there is room for....
|
||
bcs .2
|
||
|
||
jsr SKT.StoreTCB success, update socket
|
||
|
||
.2 ldy #S.TCP.OPTIONS
|
||
lda (ZPFrameInPtr),y
|
||
and #S.TCP.OPTIONS.FIN
|
||
beq .8
|
||
|
||
ldy #S.SOCKET.TCP.OPTIONS
|
||
lda (ZPPtrSKT),y
|
||
ora #S.TCP.OPTIONS.ACK ACK the FIN....
|
||
sta (ZPPtrSKT),y
|
||
|
||
jsr TCP.OUT.I SKT.GetTCB called, try to ACK the FIN
|
||
bcs .9
|
||
|
||
ldy #S.SOCKET.TCP.STATUS
|
||
lda #S.SOCKET.TCP.STATUS.CLWAIT
|
||
sta (ZPPtrSKT),y
|
||
|
||
.8 clc
|
||
.9 rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.CLWAIT
|
||
clc Wait for SKT.CloseA from Daemon
|
||
rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.LASTACK
|
||
ldy #S.TCP.OPTIONS only accept ACK packet
|
||
lda (ZPFrameInPtr),y
|
||
cmp #S.TCP.OPTIONS.ACK
|
||
bne .8
|
||
|
||
jmp SKT.Destroy
|
||
|
||
.8 clc
|
||
rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.FINWT1
|
||
ldy #S.TCP.OPTIONS only accept ACK packet
|
||
lda (ZPFrameInPtr),y
|
||
cmp #S.TCP.OPTIONS.ACK
|
||
bne .1
|
||
|
||
ldy #S.SOCKET.TCP.STATUS
|
||
lda #S.SOCKET.TCP.STATUS.FINWT2
|
||
sta (ZPPtrSKT),y
|
||
clc
|
||
rts
|
||
|
||
.1 cmp #S.TCP.OPTIONS.FIN
|
||
bne .8
|
||
|
||
ldy #S.SOCKET.TCP.OPTIONS
|
||
lda (ZPPtrSKT),y
|
||
ora #S.TCP.OPTIONS.ACK
|
||
sta (ZPPtrSKT),y
|
||
|
||
jsr TCP.OUT FINWT1, Ack the FIN
|
||
bcs .9
|
||
|
||
ldy #S.SOCKET.TCP.STATUS
|
||
lda #S.SOCKET.TCP.STATUS.CLOSING
|
||
sta (ZPPtrSKT),y
|
||
|
||
.8 clc
|
||
.9 rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.FINWT2
|
||
ldy #S.TCP.OPTIONS only accept FIN packet
|
||
lda (ZPFrameInPtr),y
|
||
cmp #S.TCP.OPTIONS.FIN
|
||
bne .8
|
||
|
||
ldy #S.SOCKET.TCP.OPTIONS
|
||
lda (ZPPtrSKT),y
|
||
ora #S.TCP.OPTIONS.ACK
|
||
sta (ZPPtrSKT),y
|
||
|
||
jsr TCP.OUT ACK the FIN
|
||
bcs .9
|
||
|
||
ldy #S.SOCKET.TCP.STATUS
|
||
lda #S.SOCKET.TCP.STATUS.TIMEWT
|
||
sta (ZPPtrSKT),y
|
||
|
||
.8 clc
|
||
.9 rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.CLOSING
|
||
ldy #S.TCP.OPTIONS only accept ACK packet
|
||
lda (ZPFrameInPtr),y
|
||
cmp #S.TCP.OPTIONS.ACK
|
||
bne .1
|
||
|
||
ldy #S.SOCKET.TCP.STATUS
|
||
lda #S.SOCKET.TCP.STATUS.TIMEWT
|
||
sta (ZPPtrSKT),y
|
||
|
||
.1 clc
|
||
rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.TIMEWT
|
||
*--------------------------------------
|
||
TCP.IN.JMP.CLOSED
|
||
clc
|
||
rts
|
||
*--------------------------------------
|
||
TCP.IN.SetDataInPtrAndLen
|
||
ldy #S.IP.TOTAL.LENGTH+1
|
||
lda (ZPFrameInPtr),y
|
||
sec
|
||
sbc #S.IP-S.ETH
|
||
sta ZPDataInLen
|
||
|
||
dey
|
||
lda (ZPFrameInPtr),y
|
||
sbc /S.IP-S.ETH
|
||
sta ZPDataInLen+1
|
||
|
||
ldy #S.TCP.DATAOFFSET
|
||
lda (ZPFrameInPtr),y
|
||
and #$F0 Get TCP Header len in DWORD
|
||
lsr
|
||
lsr
|
||
sta TmpOffset
|
||
|
||
lda ZPDataInLen
|
||
sec
|
||
sbc TmpOffset
|
||
sta ZPDataInLen
|
||
|
||
bcs .1
|
||
dec ZPDataInLen+1
|
||
|
||
.1 lda ZPFrameInPtr
|
||
clc
|
||
adc #S.IP
|
||
pha
|
||
|
||
lda ZPFrameInPtr+1
|
||
adc /S.IP
|
||
tax
|
||
|
||
pla
|
||
clc
|
||
adc TmpOffset
|
||
bcc .2
|
||
|
||
inx
|
||
|
||
.2 sta ZPDataInPtr
|
||
stx ZPDataInPtr+1
|
||
rts
|
||
*--------------------------------------
|
||
TCP.OUT jsr SKT.GetTCB
|
||
|
||
TCP.OUT.I lda SKT.TCBCache+S.TCB.OUTTOSEND+1
|
||
ldy SKT.TCBCache+S.TCB.OUTTOSEND
|
||
|
||
bne .1
|
||
|
||
tax
|
||
bne .1
|
||
|
||
* Y,A=0 : no data to send
|
||
|
||
ldy #S.SOCKET.TCP.OPTIONS
|
||
lda (ZPPtrSKT),y
|
||
bne TCP.OUT.SendOptA a least an option...
|
||
clc No, data, no flag....exit
|
||
rts
|
||
|
||
.1 cpy #K.TCP.MSS
|
||
pha
|
||
sbc /K.TCP.MSS OUTDATA > MSS ?
|
||
pla
|
||
bcc .2 no....keep data len
|
||
|
||
>LDYAI K.TCP.MSS yes send only MSS
|
||
|
||
.2 jsr TCP.NewFrame
|
||
bcs TCP.OUT.9
|
||
|
||
jsr SKT.GetDataFromSktOut
|
||
|
||
ldy #S.SOCKET.TCP.OPTIONS
|
||
lda (ZPPtrSKT),y
|
||
jsr TCP.OUT.SendOptA.1
|
||
|
||
bcs TCP.OUT.9
|
||
|
||
lda SKT.TCBCache+S.TCB.OUTNEXTSEQ+3
|
||
clc
|
||
adc ZPDataOutLen
|
||
sta SKT.TCBCache+S.TCB.OUTNEXTSEQ+3
|
||
|
||
lda SKT.TCBCache+S.TCB.OUTNEXTSEQ+2
|
||
adc ZPDataOutLen+1
|
||
sta SKT.TCBCache+S.TCB.OUTNEXTSEQ+2
|
||
bcc .80
|
||
inc SKT.TCBCache+S.TCB.OUTNEXTSEQ+1
|
||
bne .80
|
||
inc SKT.TCBCache+S.TCB.OUTNEXTSEQ
|
||
|
||
.80 jmp SKT.StoreTCB
|
||
TCP.OUT.9 rts
|
||
*--------------------------------------
|
||
TCP.OUT.SendOptA
|
||
sta .1+1
|
||
>LDYAI 0
|
||
jsr TCP.NewFrame
|
||
bcs TCP.OUT.9
|
||
|
||
.1 lda #$ff
|
||
|
||
TCP.OUT.SendOptA.1
|
||
ldy #S.TCP.OPTIONS
|
||
sta (ZPFrameOutPtr),y
|
||
|
||
ldx #3
|
||
ldy #S.TCP.ACKNUM+3
|
||
|
||
.1 lda SKT.TCBCache+S.TCB.OUTACKNUM,x
|
||
sta (ZPFrameOutPtr),y
|
||
dey
|
||
dex
|
||
bpl .1
|
||
|
||
ldx #3
|
||
ldy #S.TCP.SEQNUM+3
|
||
|
||
.2 lda SKT.TCBCache+S.TCB.OUTNEXTSEQ,x
|
||
sta (ZPFrameOutPtr),y
|
||
dey
|
||
dex
|
||
bpl .2
|
||
|
||
ldy #S.TCP.WINDOW
|
||
lda SKT.TCBCache+S.TCB.INFREE+1
|
||
sta (ZPFrameOutPtr),y
|
||
iny
|
||
lda SKT.TCBCache+S.TCB.INFREE
|
||
sta (ZPFrameOutPtr),y
|
||
|
||
jsr FRM.SendIP
|
||
bcs .9
|
||
|
||
ldy #S.SOCKET.TCP.OPTIONS
|
||
lda (ZPPtrSKT),y
|
||
and #S.TCP.OPTIONS.FIN
|
||
beq .8
|
||
|
||
ldy #S.SOCKET.TCP.STATUS
|
||
lda #S.SOCKET.TCP.STATUS.FINWT1
|
||
sta (ZPPtrSKT),y
|
||
|
||
.8 ldy #S.SOCKET.TCP.OPTIONS
|
||
lda #0
|
||
sta (ZPPtrSKT),y
|
||
|
||
clc
|
||
.9 rts
|
||
*--------------------------------------
|
||
TCP.NewFrame ldx #S.IP.PROTOCOL.TCP
|
||
jsr FRM.NewIP
|
||
bcs .9
|
||
|
||
jsr SKT.SetFrameOutDstIP
|
||
|
||
ldy #S.SOCKET.SRC.PORT
|
||
lda (ZPPtrSKT),y
|
||
tax
|
||
iny
|
||
lda (ZPPtrSKT),y
|
||
ldy #S.TCP.SRCPORT
|
||
sta (ZPFrameOutPtr),y
|
||
iny
|
||
txa
|
||
sta (ZPFrameOutPtr),y
|
||
|
||
ldy #S.SOCKET.DST.PORT
|
||
lda (ZPPtrSKT),y
|
||
tax
|
||
iny
|
||
lda (ZPPtrSKT),y
|
||
ldy #S.TCP.DSTPORT
|
||
sta (ZPFrameOutPtr),y
|
||
iny
|
||
txa
|
||
sta (ZPFrameOutPtr),y
|
||
|
||
ldy #S.TCP.DATAOFFSET
|
||
lda #$50 Header size = 5 DWORDS
|
||
sta (ZPFrameOutPtr),y
|
||
|
||
ldy #S.TCP.WINDOW
|
||
lda SKT.TCBCache+S.TCB.INFREE+1
|
||
sta (ZPFrameOutPtr),y
|
||
iny
|
||
lda SKT.TCBCache+S.TCB.INFREE
|
||
sta (ZPFrameOutPtr),y
|
||
|
||
clc
|
||
.9 rts
|
||
*--------------------------------------
|
||
TCP.ComputeChecksum
|
||
lda #0 RESET.TCP.CHECKSUM
|
||
ldy #S.TCP.CHECKSUM
|
||
sta (ZPFrameOutPtr),y
|
||
iny
|
||
sta (ZPFrameOutPtr),y
|
||
|
||
>LDYA ZPFrameOutPtr
|
||
>STYA ZPTmpPtr1
|
||
|
||
lda ZPFrameOutLen
|
||
sec
|
||
sbc #S.IP
|
||
sta ZPDataInLen
|
||
|
||
lda ZPFrameOutLen+1
|
||
sbc /S.IP
|
||
sta ZPDataInLen+1
|
||
|
||
clc
|
||
|
||
* lda ZPDataInLen+1
|
||
* adc #0 RESERVED (all zero)
|
||
sta IP.CHECKSUM
|
||
|
||
lda ZPDataInLen
|
||
adc #S.IP.PROTOCOL.TCP
|
||
sta IP.CHECKSUM+1
|
||
|
||
ldy #S.IP.SRC
|
||
|
||
ldx #4 4 words for SRC & DST IP
|
||
|
||
.10 lda (ZPFrameOutPtr),y
|
||
adc IP.CHECKSUM
|
||
sta IP.CHECKSUM
|
||
iny
|
||
lda (ZPFrameOutPtr),y
|
||
adc IP.CHECKSUM+1
|
||
sta IP.CHECKSUM+1
|
||
iny
|
||
dex
|
||
bne .10
|
||
|
||
ldy #S.IP
|
||
|
||
lda ZPDataInLen
|
||
eor #$ff
|
||
tax
|
||
lda ZPDataInLen+1
|
||
eor #$ff
|
||
|
||
pha
|
||
|
||
.1 inx
|
||
bne .11
|
||
pla
|
||
inc
|
||
beq .8
|
||
|
||
pha
|
||
|
||
.11 lda (ZPTmpPtr1),y
|
||
adc IP.CHECKSUM
|
||
sta IP.CHECKSUM
|
||
|
||
iny
|
||
bne .20
|
||
inc ZPTmpPtr1+1
|
||
|
||
.20 inx
|
||
bne .2
|
||
pla
|
||
inc
|
||
beq .7
|
||
|
||
pha
|
||
|
||
.2 lda (ZPTmpPtr1),y
|
||
|
||
adc IP.CHECKSUM+1
|
||
sta IP.CHECKSUM+1
|
||
|
||
iny
|
||
bne .1
|
||
inc ZPTmpPtr1+1
|
||
bra .1
|
||
|
||
.7 adc IP.CHECKSUM+1 A=0 from beq .7
|
||
sta IP.CHECKSUM+1
|
||
|
||
.8 ldy #S.TCP.CHECKSUM
|
||
lda IP.CHECKSUM
|
||
adc #0 Don't forget to add last carry!!!
|
||
eor #$FF
|
||
sta (ZPFrameOutPtr),y
|
||
iny
|
||
lda IP.CHECKSUM+1
|
||
adc #0 Don't forget to add last carry!!!
|
||
eor #$FF
|
||
sta (ZPFrameOutPtr),y
|
||
rts
|
||
*--------------------------------------
|
||
MAN
|
||
SAVE /A2OSX.SRC/LIB/LIBTCPIP.S.TCP
|
||
LOAD /A2OSX.SRC/LIB/LIBTCPIP.S
|
||
ASM
|