A2osX/LIB/LIBTCPIP.S.FRM.txt

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2017-12-22 21:24:30 +00:00
NEW
2019-05-05 17:15:37 +00:00
AUTO 3,1
.LIST OFF
*--------------------------------------
2018-10-08 15:41:00 +00:00
FRM.GetTargetSKT.TCPUDP
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ldy #S.TCPUDP.SRCPORT
lda (ZPFrameInPtr),y
sta SKT.REM.ADDR+S.SOCKADDR.PORT+1
iny
lda (ZPFrameInPtr),y
sta SKT.REM.ADDR+S.SOCKADDR.PORT
iny #S.TCPUDP.DSTPORT
lda (ZPFrameInPtr),y
sta SKT.LOC.ADDR+S.SOCKADDR.PORT+1
iny
lda (ZPFrameInPtr),y
sta SKT.LOC.ADDR+S.SOCKADDR.PORT
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FRM.GetTargetSKT.RAW
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ldy #S.IP.SRC+3
ldx #3
.1 lda (ZPFrameInPtr),y
sta SKT.REM.ADDR+S.SOCKADDR.ADDR,x
dey
dex
bpl .1
ldy #S.IP.DST+3
ldx #3
.2 lda (ZPFrameInPtr),y
sta SKT.LOC.ADDR+S.SOCKADDR.ADDR,x
dey
dex
bpl .2
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rts
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*--------------------------------------
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* FRM.NewIP
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* In:
* Y,A = DataLen
* X = S.IP.PROTOCOL.xxx
* Out:
* Y,A = Frame PTR
* X = hMem
*--------------------------------------
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FRM.NewIP stx .8+1
>STYA ZPDataOutLen
cpx #S.IP.PROTOCOL.TCP
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bne .1
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lda #S.TCP
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bra .4
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.1 cpx #S.IP.PROTOCOL.UDP
bne .2
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lda #S.UDP
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bra .4
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.2 lda #S.IP
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.4 sta .5+1 save Header len for reset later
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clc
adc ZPDataOutLen
sta ZPFrameOutLen
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tay
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lda #0
adc ZPDataOutLen+1
sta ZPFrameOutLen+1
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>SYSCALL2 getmem
bcs .9
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stx hFrameOut
>STYA ZPFrameOutPtr
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ldy #0
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.5 ldx #$ff Self Modified, header length
lda #0
.6 sta (ZPFrameOutPtr),y
iny
dex
bne .6
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tya
* clc
adc ZPFrameOutPtr
sta ZPDataOutPtr
lda #0
adc ZPFrameOutPtr+1
sta ZPDataOutPtr+1
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lda IPCFG+S.NETCFG.DevFlags
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and #S.DCB.NIC.FLAGS.IPOFFLOAD
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bne .7
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ldy #S.ETH.EII.TYPE
lda /S.ETH.EII.TYPE.IP
sta (ZPFrameOutPtr),y
iny
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lda #S.ETH.EII.TYPE.IP
sta (ZPFrameOutPtr),y
ldy #S.IP.V.IHL.DSCP.ECN
lda #$45
sta (ZPFrameOutPtr),y
* iny
* lda #$0
* sta (ZPFrameOutPtr),y
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* ldy #S.IP.FRAGMENT.FLAGS
* sta (ZPFrameOutPtr),y
* iny
* sta (ZPFrameOutPtr),y
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ldy #S.IP.IDENTIFICATION+1
lda IP.ID
ldx IP.ID+1
inc
bne .61
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inx
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stx IP.ID+1
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.61 sta IP.ID
sta (ZPFrameOutPtr),y
dey
txa
sta (ZPFrameOutPtr),y
ldy #S.IP.TTL
lda #K.IP.TTL
sta (ZPFrameOutPtr),y
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.7 ldy #S.IP.PROTOCOL
.8 lda #$ff
sta (ZPFrameOutPtr),y
.9 rts
*--------------------------------------
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* clc Queue if fail
* sec DONT Queue if fail
*--------------------------------------
FRM.SendIP php
ldx #3 Copy SRC.IP even if IP offload
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ldy #S.IP.SRC+3 for proper UDP/TCP CRC calculation
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.1 lda IPCFG+S.IPCFG.IP,x
sta (ZPFrameOutPtr),y
dey
dex
bpl .1
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lda IPCFG+S.NETCFG.DevFlags
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and #S.DCB.NIC.FLAGS.IPOFFLOAD
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bne .21
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ldy #S.IP.TOTAL.LENGTH+1
lda ZPFrameOutLen
sec
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sbc #S.ETH.EII
sta (ZPFrameOutPtr),y
dey
lda ZPFrameOutLen+1
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sbc /S.ETH.EII
sta (ZPFrameOutPtr),y
lda #0
ldy #S.IP.HDR.CHECKSUM
sta (ZPFrameOutPtr),y
iny
sta (ZPFrameOutPtr),y
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stz IP.CHECKSUM RESET IP CHECKSUM
stz IP.CHECKSUM+1
clc
ldy #S.IP.V.IHL.DSCP.ECN
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ldx #10 10 words for IP Header
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.2 lda (ZPFrameOutPtr),y
adc IP.CHECKSUM
sta IP.CHECKSUM
iny
lda (ZPFrameOutPtr),y
adc IP.CHECKSUM+1
sta IP.CHECKSUM+1
iny
dex
bne .2
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ldy #S.IP.HDR.CHECKSUM
lda IP.CHECKSUM
adc #0
eor #$FF
sta (ZPFrameOutPtr),y
iny
lda IP.CHECKSUM+1
adc #0
eor #$FF
sta (ZPFrameOutPtr),y
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.21 ldy #S.IP.PROTOCOL
lda (ZPFrameOutPtr),y
cmp #S.IP.PROTOCOL.TCP
bne .3
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jsr IP.ComputeTCPChecksum
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bra .5
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.3 cmp #S.IP.PROTOCOL.UDP
bne .4
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lda ZPFrameOutLen
sec
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sbc #S.IP
ldy #S.UDP.LENGTH+1
sta (ZPFrameOutPtr),y
lda ZPFrameOutLen+1
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sbc /S.IP
dey
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sta (ZPFrameOutPtr),y
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jsr IP.ComputeUDPChecksum
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bra .5
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.4 cmp #S.IP.PROTOCOL.ICMP
bne .5
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jsr IP.ComputeICMPChecksum
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.5 lda IPCFG+S.NETCFG.DevFlags
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and #S.DCB.NIC.FLAGS.ARPOFFLOAD
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bne .6
jsr IP.SetDestMAC
bcs FRM.Queue
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.6 jsr FRM.Send
bcs FRM.Queue
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jsr FRM.Discard
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plp
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clc
rts
*--------------------------------------
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FRM.Queue plp
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bcs FRM.Discard DONT queue
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ldy hFrameOut no hFrame, cannot queue for retry
beq FRM.Discard.9
ldx FRM.QUEUE.Head
inx
cpx #K.FRMQUEUE.SIZE
bne .1
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ldx #0
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.1 cpx FRM.QUEUE.Tail
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beq FRM.Discard CS
ldy FRM.QUEUE.Head
stx FRM.QUEUE.Head
sta FRM.QUEUE.State,y
lda #K.FRMSEND.RETRY
sta FRM.QUEUE.Retry,y
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lda hFrameOut
sta FRM.QUEUE.hMem,y
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lda ZPFrameOutLen
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sta FRM.QUEUE.LenL,y
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lda ZPFrameOutLen+1
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sta FRM.QUEUE.LenH,y
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clc
.9 rts
*--------------------------------------
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FRM.Discard lda hFrameOut
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beq FRM.Discard.9
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stz hFrameOut
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>SYSCALL2 FreeMem
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FRM.Discard.9 sec
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rts
*--------------------------------------
FRM.Retry ldx FRM.QUEUE.Tail
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.1 cpx FRM.QUEUE.Head
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beq .8 Queue is empty, exit...
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lda FRM.QUEUE.LenL,x
sta ZPFrameOutLen
lda FRM.QUEUE.LenH,x
sta ZPFrameOutLen+1
lda FRM.QUEUE.hMem,x
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>SYSCALL2 GetMemPtr
>STYA ZPFrameOutPtr
ldx FRM.QUEUE.Tail
lda FRM.QUEUE.State,x
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cmp #ERR.ARP.PENDING
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bne .2
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jsr IP.SetDestMAC Err is ARP or higher, retry getting MAC
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bcs .3 still error getting dest MAC
.2 jsr FRM.Send try sending again to DRV
bcc .4
.3 ldx FRM.QUEUE.Tail
sta FRM.QUEUE.State,x save error...
dec FRM.QUEUE.Retry,x
bne .8 exit....until next run!
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.4 ldx FRM.QUEUE.Tail
lda FRM.QUEUE.hMem,x Success,or max retry, discard entry
inx
cpx #K.FRMQUEUE.SIZE
bne .5
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ldx #0
.5 stx FRM.QUEUE.Tail
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>SYSCALL2 FreeMem
bra FRM.Retry
.8 rts
*--------------------------------------
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FRM.Send ldx #3
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.1 lda ZPFrameOutPtr,x Get Frame Ptr & Len
sta IOCTL+S.IOCTL.BUFPTR,x
dex
bpl .1
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FRM.Send.IOCTL >PUSHW L.IOCTL
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>PUSHBI IOCTL.WRITE
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lda IPCFG+S.NETCFG.DevID
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>SYSCALL2 IOCTL
rts
*--------------------------------------
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FRM.DiscardIn lda hFrameIn
beq .8
stz hFrameIn
>SYSCALL2 FreeMem
.8 clc
rts
*--------------------------------------
MAN
2018-11-17 17:17:13 +00:00
SAVE USR/SRC/LIB/LIBTCPIP.S.FRM
LOAD USR/SRC/LIB/LIBTCPIP.S
ASM