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Kernel version 0.9 : TCP, bugfix in SEQ & ACK (#1)

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This commit is contained in:
Rémy GIBERT 2017-03-27 08:28:25 +02:00
parent b4f18d1aec
commit 7d61543721
6 changed files with 60 additions and 35 deletions
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A2OSX.BOOT.po
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8
INC/LIBTCPIP.I.txt
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@ -178,10 +178,12 @@ S.TCB.INUSED .EQ 8
S.TCB.OUTUSED .EQ 10
S.TCB.INFREE .EQ 12
S.TCB.OUTFREE .EQ 14
S.TCB.SEQNUM .EQ 16
S.TCB.ACKNUM .EQ 20
S.TCB.SEQNUM .EQ 16 Send:SEQ not yet ACKed
S.TCB.ACKNUM .EQ 20 Rcvd:Last ACK recieved from remote
S.TCB.NEXTSEQ .EQ 24 Send:Next SEQ to use when sending more data
S.TCB.LASTSEQ .EQ 28 Rcvd:Last SEQ accepted data from remote
*
S.TCB .EQ 24
S.TCB .EQ 32
*--------------------------------------
S.ETH.FRAMELEN .EQ 0
S.ETH.DSTMAC .EQ 2

39
LIB/LIBTCPIP.S.SKT.txt
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@ -630,6 +630,16 @@ SKT.AddDataToSktIn
sbc ZPDataInLen+1
bcc .9 Not enough room in Q
ldy #S.TCP.SEQ.NUMBER+3
ldx #3
.10 lda (ZPFrameInPtr),y
eor SKT.TCBCache+S.TCB.LASTSEQ,x
bne .9
dey
dex
bpl .10
ldy #S.SOCKET.SQ.hInMem
lda (ZPPtrSKT),y
>SYSCALL GetMemPtrA
@ -707,7 +717,21 @@ SKT.AddDataToSktIn
adc ZPDataInLen+1
sta SKT.TCBCache+S.TCB.INUSED+1
jmp SKT.StoreTCB
clc
lda SKT.TCBCache+S.TCB.LASTSEQ+3
adc ZPDataInLen
sta SKT.TCBCache+S.TCB.LASTSEQ+3
lda SKT.TCBCache+S.TCB.LASTSEQ+2
adc ZPDataInLen+1
sta SKT.TCBCache+S.TCB.LASTSEQ+2
bcc .80
inc SKT.TCBCache+S.TCB.LASTSEQ+1
bne .80
inc SKT.TCBCache+S.TCB.NEXTSEQ
.80 jmp SKT.StoreTCB
*--------------------------------------
* From SKT.Read
* In:
@ -873,8 +897,6 @@ SKT.GetDataFromSktIn
SKT.AddDataToSktOut
jsr SKT.GetTCB
* >DEBUG
ldx SKT.TCBCache+S.TCB.OUTFREE
cpx ZPDataInLen
lda SKT.TCBCache+S.TCB.OUTFREE+1
@ -1031,16 +1053,16 @@ SKT.GetDataFromSktOut
*--------------------------------------
SKT.AckDataToSktOut
ldy #S.TCP.ACK.NUMBER+3 Get new ACK number from FrameIn...
ldx #3 Substract old SEQ from socket
ldx #3 Substract old ACK from socket
sec
.1 lda (ZPFrameInPtr),y
pha
sbc SKT.TCBCache+S.TCB.SEQNUM,x
sbc SKT.TCBCache+S.TCB.ACKNUM,x
sta TmpDWord,x
pla ....and Set SEQ = new ACK
sta SKT.TCBCache+S.TCB.SEQNUM,x
pla ....and Set ACK = new ACK
sta SKT.TCBCache+S.TCB.ACKNUM,x
dey
dex
bpl .1
@ -1098,9 +1120,12 @@ SKT.NewTCB >PUSHWI S.TCB
sta SKT.TCBCache+S.TCB.OUTFREE+1
ldx #3
sec
.2 lda A2osX.TIMER16,x
sta SKT.TCBCache+S.TCB.SEQNUM,x
adc #0
sta SKT.TCBCache+S.TCB.NEXTSEQ,x
dex
bpl .2

48
LIB/LIBTCPIP.S.TCP.txt
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@ -100,7 +100,7 @@ TCP.IN.JMP.LISTEN
>PUSHW L.SKT.Template
jsr SKT.New.Listen
jsr SKT.New.Listen Assign SEQNUM
bcs .99
sty .1+1
@ -116,7 +116,7 @@ TCP.IN.JMP.LISTEN
.2 lda #$ff
sta ZPPtrSKT+1
ldy #S.TCP.SEQ.NUMBER+3
ldy #S.TCP.SEQ.NUMBER+3 Get Remote SEQ
ldx #3
sec
@ -124,6 +124,7 @@ TCP.IN.JMP.LISTEN
.3 lda (ZPFrameInPtr),y Set ACK=SEQ+1 for new socket...
adc #0
sta SKT.TCBCache+S.TCB.ACKNUM,x
sta SKT.TCBCache+S.TCB.LASTSEQ,x
dey
dex
bpl .3
@ -133,7 +134,7 @@ TCP.IN.JMP.LISTEN
jsr ARP.AddFromFrameInPtr
lda #S.TCP.OPTIONS.SYN+S.TCP.OPTIONS.ACK
jsr TCP.OUT.SendOpt
jsr TCP.OUT.SendOpt Send SYN.ACK
bcs .9
ldy #S.SOCKET.TCP.STATUS
@ -157,9 +158,9 @@ TCP.IN.JMP.SYNSENT
jsr SKT.GetTCB
ldx #3
ldy #S.TCP.SEQ.NUMBER+3
ldy #S.TCP.ACK.NUMBER+3
sec
sec Check if ACK=my SEQ+1
.1 lda SKT.TCBCache+S.TCB.ACKNUM,x
adc #0
@ -192,11 +193,8 @@ TCP.IN.JMP.SYNRCVD
ldx #3
ldy #S.TCP.ACK.NUMBER+3
sec
.1 lda SKT.TCBCache+S.TCB.SEQNUM,x
adc #0
sta SKT.TCBCache+S.TCB.SEQNUM,x
.1 lda SKT.TCBCache+S.TCB.NEXTSEQ,x Check if ACK=my SEQ+1
sta SKT.TCBCache+S.TCB.SEQNUM,x
eor (ZPFrameInPtr),y
bne .8
dey
@ -218,10 +216,11 @@ TCP.IN.JMP.ESTBLSH
ldy #S.TCP.OPTIONS
lda (ZPFrameInPtr),y
bit #S.TCP.OPTIONS.ACK Remote side ACKed data ?
and #S.TCP.OPTIONS.ACK Remote side ACKed data ?
beq .1
jsr SKT.AckDataToSktOut (will call SKT.GetTCB) Yes, Discard sent data
jsr SKT.AckDataToSktOut Yes, Discard sent data
jsr SKT.StoreTCB and update SKT
.1 jsr TCP.IN.SetDataInPtrAndLen
@ -233,19 +232,22 @@ TCP.IN.JMP.ESTBLSH
.2 ldy #S.TCP.OPTIONS
lda (ZPFrameInPtr),y
bit #S.TCP.OPTIONS.FIN
and #S.TCP.OPTIONS.FIN
beq .8
ldy #S.TCP.OPTIONS
lda (ZPFrameInPtr),y
lda (ZPPtrSKT),y
ora #S.TCP.OPTIONS.ACK ACK the FIN....
sta (ZPFrameInPtr),y
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 jmp TCP.OUT.I SKT.GetTCB called try to ACK
.8 clc
.9 rts
*--------------------------------------
TCP.IN.JMP.CLWAIT
@ -388,7 +390,7 @@ TCP.OUT.I lda SKT.TCBCache+S.TCB.OUTUSED+1
bne .1
tax
bne .1 Y,A=0 : no data to send
beq .1 Y,A=0 : no data to send
ldy #S.SOCKET.TCP.OPTIONS
lda (ZPPtrSKT),y
@ -411,11 +413,8 @@ TCP.OUT.I lda SKT.TCBCache+S.TCB.OUTUSED+1
ldy #S.SOCKET.TCP.OPTIONS
lda (ZPPtrSKT),y
ora #S.TCP.OPTIONS.ACK
ldy #S.TCP.OPTIONS
sta (ZPFrameOutPtr),y
jsr TCP.OUT.Send
.7 jsr TCP.OUT.Send
bcs TCP.OUT.9
jmp SKT.StoreTCB
TCP.OUT.9 rts
@ -425,12 +424,11 @@ TCP.OUT.SendOpt sta .1+1
jsr TCP.NewFrame
bcs TCP.OUT.9
ldy #S.TCP.OPTIONS
.1 lda #$ff
sta (ZPFrameOutPtr),y
TCP.OUT.Send ldx #7
TCP.OUT.Send ldy #S.TCP.OPTIONS
sta (ZPFrameOutPtr),y
ldx #7
ldy #S.TCP.SEQ.NUMBER+7
.2 lda SKT.TCBCache+S.TCB.SEQNUM,x