mirror of
https://github.com/A2osX/A2osX.git
synced 2024-07-03 22:29:36 +00:00
524 lines
9.2 KiB
Plaintext
524 lines
9.2 KiB
Plaintext
PR#3
|
||
PREFIX /A2OSX.SRC
|
||
LOMEM $A00
|
||
INC 1
|
||
AUTO 6
|
||
.LIST OFF
|
||
*--------------------------------------
|
||
TCP.IN ldy #S.IP.SRC+3
|
||
ldx #3
|
||
|
||
.1 lda (ZPFrameInPtr),y
|
||
sta TmpSocket+S.SOCKET.DST.ADDR,x
|
||
dey
|
||
dex
|
||
bpl .1
|
||
|
||
ldy #S.TCP.SRCPORT
|
||
lda (ZPFrameInPtr),y
|
||
sta TmpSocket+S.SOCKET.DST.PORT+1
|
||
iny
|
||
lda (ZPFrameInPtr),y
|
||
sta TmpSocket+S.SOCKET.DST.PORT
|
||
|
||
ldy #S.IP.DST+3
|
||
ldx #3
|
||
.2 lda (ZPFrameInPtr),y
|
||
sta TmpSocket+S.SOCKET.SRC.ADDR,x
|
||
dey
|
||
dex
|
||
bpl .2
|
||
|
||
ldy #S.TCP.DSTPORT
|
||
lda (ZPFrameInPtr),y
|
||
sta TmpSocket+S.SOCKET.SRC.PORT+1
|
||
iny
|
||
lda (ZPFrameInPtr),y
|
||
sta TmpSocket+S.SOCKET.SRC.PORT
|
||
|
||
>LDYA L.SKT.TABLE
|
||
>STYA ZPPtrSKT
|
||
|
||
ldx #0
|
||
|
||
.3 lda (ZPPtrSKT)
|
||
beq .7
|
||
cmp #S.SOCKET.SOCK.STREAM
|
||
bne .7
|
||
|
||
ldy #S.SOCKET.SRC.ADDR
|
||
|
||
.4 lda TmpSocket,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
|
||
|
||
ldy #S.TCP.OPTIONS yes, only accept SYN packet
|
||
lda (ZPFrameOutPtr),y
|
||
cmp #S.TCP.OPTIONS.SYN
|
||
bne .7 not for this listening socket
|
||
jmp TCP.IN.LISTEN.NEW
|
||
|
||
.5 ldy #S.SOCKET.DST.ADDR
|
||
|
||
.6 lda TmpSocket,y regular socket, check remote ADDR/PORT
|
||
cmp (ZPPtrSKT),y
|
||
bne .7
|
||
iny
|
||
cpy #S.SOCKET.DST.PORT+2
|
||
bne .6
|
||
|
||
jmp TCP.IN.REGULAR
|
||
|
||
.7 lda ZPPtrSKT
|
||
clc
|
||
adc #S.SOCKET
|
||
sta ZPPtrSKT
|
||
bcc .8
|
||
inc ZPPtrSKT+1
|
||
|
||
.8 inx
|
||
cpx #K.SKTTABLE.SIZE
|
||
bne .3
|
||
|
||
clc Discard frame
|
||
rts
|
||
*--------------------------------------
|
||
TCP.IN.LISTEN.NEW
|
||
lda #S.SOCKET.SOCK.STREAM
|
||
sta TmpSocket
|
||
|
||
stz TmpSocket+S.SOCKET.SO
|
||
|
||
ldy #S.TCP.SEQ.NUMBER+3
|
||
ldx #3
|
||
|
||
sec
|
||
|
||
.1 lda (ZPFrameInPtr),y
|
||
adc #0
|
||
sta TmpSocket+S.SOCKET.SQ.ACKNUM,x
|
||
dey
|
||
dex
|
||
bpl .1
|
||
|
||
ldx #3
|
||
.2 lda A2osX.TIMER16,x
|
||
sta TmpSocket+S.SOCKET.SQ.SEQNUM,x
|
||
dex
|
||
bpl .2
|
||
|
||
>PUSHW L.TmpSocket
|
||
|
||
jsr SKT.NEW
|
||
bcs .9
|
||
|
||
phy
|
||
pha
|
||
txa
|
||
|
||
jsr SKT.AddToQueueA
|
||
|
||
pla
|
||
sta ZPPtrSKT+1
|
||
pla
|
||
sta ZPPtrSKT
|
||
|
||
bcc .3
|
||
|
||
lda #0 error
|
||
sta (ZPPtrSKT) clear this socket
|
||
lda #ERR.SKT.OOS
|
||
.9 rts
|
||
|
||
.3 ldy #S.SOCKET.STATUS
|
||
lda #S.SOCKET.STATUS.SYNRCVD
|
||
sta (ZPPtrSKT),y
|
||
|
||
jmp TCP.SendSYNACK
|
||
*--------------------------------------
|
||
TCP.IN.REGULAR stx hSocket
|
||
ldy #S.SOCKET.STATUS
|
||
lda (ZPPtrSKT),y
|
||
asl
|
||
tax
|
||
jmp (L.TCP.IN.JMP,x)
|
||
*--------------------------------------
|
||
TCP.IN.JMP.CLOSED
|
||
TCP.IN.JMP.LISTEN
|
||
TCP.IN.JMP.SYNSENT
|
||
clc
|
||
rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.SYNRCVD
|
||
ldy #S.TCP.OPTIONS only accept ACK packet
|
||
lda (ZPFrameInPtr),y
|
||
cmp #S.TCP.OPTIONS.ACK
|
||
bne .8
|
||
|
||
ldx #3
|
||
ldy #S.SOCKET.SQ.SEQNUM+3
|
||
sec
|
||
.10 lda (ZPPtrSKT),y
|
||
adc #0
|
||
sta TmpDWord,x
|
||
dey
|
||
dex
|
||
bpl .10
|
||
|
||
ldx #3
|
||
ldy #S.TCP.ACK.NUMBER+3
|
||
.11 lda (ZPFrameInPtr),y
|
||
cmp TmpDWord,x
|
||
bne .8
|
||
dey
|
||
dex
|
||
bpl .11
|
||
|
||
ldx #3
|
||
ldy #S.SOCKET.SQ.SEQNUM+3
|
||
.12 lda TmpDWord,x
|
||
sta (ZPPtrSKT),y
|
||
dey
|
||
dex
|
||
bpl .12
|
||
|
||
ldy #S.SOCKET.STATUS
|
||
lda #S.SOCKET.STATUS.ESTBLSH
|
||
sta (ZPPtrSKT),y
|
||
|
||
>PUSHW K.TCP.WSIZE
|
||
>PUSHBI 0
|
||
>SYSCALL GetMem
|
||
bcs *
|
||
txa
|
||
|
||
ldy #S.SOCKET.STREAM.hInMem
|
||
sta (ZPPtrSKT),y
|
||
|
||
>PUSHW K.TCP.WSIZE
|
||
>PUSHBI 0
|
||
>SYSCALL GetMem
|
||
bcs *
|
||
txa
|
||
|
||
ldy #S.SOCKET.STREAM.hOutMem
|
||
sta (ZPPtrSKT),y
|
||
|
||
.8 clc
|
||
rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.ESTBLSH
|
||
ldy #S.TCP.OPTIONS
|
||
lda (ZPFrameInPtr),y
|
||
cmp #S.TCP.OPTIONS.ACK
|
||
bne .1
|
||
|
||
jsr TCP.UpdateSktAckNum
|
||
|
||
.1 jsr TCP.SetDataInPtrAndLen
|
||
jsr TCP.AddDataToSkt
|
||
|
||
|
||
clc
|
||
rts
|
||
*--------------------------------------
|
||
TCP.IN.JMP.CLWAIT
|
||
TCP.IN.JMP.LASTACK
|
||
TCP.IN.JMP.FINWT1
|
||
TCP.IN.JMP.FINWT2
|
||
TCP.IN.JMP.CLOSING
|
||
TCP.IN.JMP.TIMEWT
|
||
clc
|
||
rts
|
||
*--------------------------------------
|
||
TCP.UpdateSktAckNum
|
||
ldy #S.SOCKET.SQ.ACKNUM+3
|
||
lda (ZPPtrSKT),y
|
||
clc
|
||
adc ZPDataInLen
|
||
sta (ZPPtrSKT),y
|
||
dey
|
||
lda (ZPPtrSKT),y
|
||
adc ZPDataInLen+1
|
||
sta (ZPPtrSKT),y
|
||
dey
|
||
lda (ZPPtrSKT),y
|
||
adc #0
|
||
sta (ZPPtrSKT),y
|
||
dey
|
||
lda (ZPPtrSKT),y
|
||
adc #0
|
||
sta (ZPPtrSKT),y
|
||
rts
|
||
*--------------------------------------
|
||
ldy #S.TCP.ACK.NUMBER
|
||
ldx #4
|
||
|
||
.1 lda (ZPFrameInPtr),y
|
||
pha
|
||
iny
|
||
dex
|
||
bne .1
|
||
|
||
ldy #S.SOCKET.SQ.ACKNUM+3
|
||
ldx #4
|
||
|
||
.2 pla
|
||
sta (ZPPtrSKT),y
|
||
dey
|
||
dex
|
||
bne .2
|
||
rts
|
||
*--------------------------------------
|
||
TCP.SetDataInPtrAndLen
|
||
ldy #S.TCP.DATAOFFSET
|
||
lda (ZPFrameInPtr),y
|
||
and #$F0
|
||
lsr
|
||
lsr
|
||
adc #S.TCP
|
||
sta TmpOffset
|
||
|
||
lda #0
|
||
* clc
|
||
adc /S.TCP
|
||
sta TmpOffset+1 TmpOffset=Data Offset in Frame
|
||
|
||
lda ZPFrameInPtr
|
||
* clc
|
||
adc TmpOffset
|
||
sta ZPDataInPtr
|
||
|
||
lda ZPFrameInPtr+1
|
||
adc #0
|
||
sta ZPDataInPtr+1
|
||
|
||
lda ZPFrameInLen
|
||
sec
|
||
sbc TmpOffset
|
||
sta ZPDataInLen
|
||
|
||
lda ZPFrameInLen+1
|
||
sbc TmpOffset+1
|
||
sta ZPDataInLen+1
|
||
rts
|
||
*--------------------------------------
|
||
TCP.AddDataToSkt
|
||
ldy #S.SOCKET.STREAM.hInMem
|
||
lda (ZPPtrSKT),y
|
||
>SYSCALL GetMemPtrA
|
||
>STYA ZPTmpPtr1 Make ZPTmpPtr1=buffer base
|
||
|
||
ldy #S.SOCKET.SQ.INHEAD
|
||
lda (ZPPtrSKT),y
|
||
tax save LO for compare later
|
||
clc
|
||
adc ZPTmpPtr1
|
||
sta ZPTmpPtr2 Make ZPTmpPtr2=actual head
|
||
iny
|
||
lda (ZPPtrSKT),y
|
||
pha save HI for compare later
|
||
adc ZPTmpPtr1+1
|
||
sta ZPTmpPtr2+1
|
||
|
||
lda ZPDataInLen
|
||
eor #$ff
|
||
sta ZPTmpPtr3 Make ZPTmpPtr3=!count
|
||
lda ZPDataInLen+1
|
||
eor #$ff
|
||
sta ZPTmpPtr3+1
|
||
|
||
ldy #0
|
||
|
||
.1 inc ZPTmpPtr3
|
||
bne .2
|
||
inc ZPTmpPtr3+1
|
||
beq .9
|
||
|
||
.2 lda (ZPDataInPtr),y
|
||
sta (ZPTmpPtr2)
|
||
|
||
iny
|
||
bne .3
|
||
inc ZPDataInPtr+1
|
||
|
||
.3 inc ZPTmpPtr2
|
||
bne .4
|
||
inc ZPTmpPtr2+1
|
||
|
||
.4 pla
|
||
inx
|
||
bne .5
|
||
inc
|
||
.5 pha
|
||
cpx #K.TCP.WSIZE
|
||
sbc /K.TCP.WSIZE
|
||
bcc .1
|
||
|
||
.6 inc ZPTmpPtr3
|
||
bne .7
|
||
inc ZPTmpPtr3+1
|
||
beq .9
|
||
|
||
.7 lda (ZPDataInPtr),y
|
||
sta (ZPTmpPtr1)
|
||
|
||
iny
|
||
bne .8
|
||
inc ZPDataInPtr+1
|
||
|
||
.8 inc ZPTmpPtr1
|
||
bne .6
|
||
inc ZPTmpPtr1+1
|
||
bra .6
|
||
|
||
.9 pla
|
||
rts
|
||
*--------------------------------------
|
||
TCP.SendACK lda #S.TCP.OPTIONS.ACK
|
||
bra TCP.SendMSG
|
||
TCP.SendSYNACK lda #S.TCP.OPTIONS.SYN+S.TCP.OPTIONS.ACK
|
||
|
||
TCP.SendMSG sta TCP.MSG+S.TCP.OPTIONS
|
||
|
||
ldy #S.SOCKET.SRC.ADDR+3
|
||
ldx #3
|
||
.1 lda (ZPPtrSKT),y
|
||
sta TCP.MSG+S.IP.SRC,x
|
||
dey
|
||
dex
|
||
bpl .1
|
||
|
||
ldy #S.SOCKET.SRC.PORT
|
||
lda (ZPPtrSKT),y
|
||
sta TCP.MSG+S.TCP.SRCPORT+1
|
||
iny
|
||
lda (ZPPtrSKT),y
|
||
sta TCP.MSG+S.TCP.SRCPORT
|
||
|
||
ldy #S.SOCKET.DST.ADDR+3
|
||
ldx #3
|
||
.2 lda (ZPPtrSKT),y
|
||
sta TCP.MSG+S.IP.DST,x
|
||
dey
|
||
dex
|
||
bpl .2
|
||
|
||
ldy #S.SOCKET.DST.PORT
|
||
lda (ZPPtrSKT),y
|
||
sta TCP.MSG+S.TCP.DSTPORT+1
|
||
iny
|
||
lda (ZPPtrSKT),y
|
||
sta TCP.MSG+S.TCP.DSTPORT
|
||
|
||
ldy #S.SOCKET.SQ.SEQNUM+7
|
||
ldx #7
|
||
.3 lda (ZPPtrSKT),y
|
||
sta TCP.MSG+S.TCP.SEQ.NUMBER,x
|
||
dey
|
||
dex
|
||
bpl .3
|
||
|
||
>PUSHW L.TCP.MSG
|
||
* jsr FRM.SendTCP
|
||
|
||
clc
|
||
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-2
|
||
sta ZPDataInLen
|
||
|
||
lda ZPFrameOutLen+1
|
||
sbc /S.IP-2
|
||
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
|
||
|
||
.1 jsr DecDataInLen
|
||
beq .8
|
||
|
||
lda (ZPTmpPtr1),y
|
||
adc IP.CHECKSUM
|
||
sta IP.CHECKSUM
|
||
|
||
iny
|
||
bne .20
|
||
inc ZPTmpPtr1+1
|
||
|
||
.20 jsr DecDataInLen
|
||
bne .2
|
||
lda #0
|
||
bra .21
|
||
|
||
.2 lda (ZPTmpPtr1),y
|
||
|
||
.21 adc IP.CHECKSUM+1
|
||
sta IP.CHECKSUM+1
|
||
|
||
iny
|
||
bne .1
|
||
inc ZPTmpPtr1+1
|
||
bra .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 LIB/LIBTCPIP.S.TCP
|
||
LOAD LIB/LIBTCPIP.S
|
||
ASM
|