mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-26 13:49:18 +00:00
344 lines
6.3 KiB
Plaintext
344 lines
6.3 KiB
Plaintext
NEW
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PREFIX /A2OSX.BUILD
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AUTO 4,1
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.LIST OFF
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*--------------------------------------
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FRM.GetTargetSKT
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ldy #S.TCPUDP.SRCPORT
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lda (ZPFrameInPtr),y
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sta SKT.REM.ADDR+S.SOCKADDR.PORT+1
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iny
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lda (ZPFrameInPtr),y
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sta SKT.REM.ADDR+S.SOCKADDR.PORT
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iny #S.TCPUDP.DSTPORT
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lda (ZPFrameInPtr),y
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sta SKT.LOC.ADDR+S.SOCKADDR.PORT+1
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iny
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lda (ZPFrameInPtr),y
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sta SKT.LOC.ADDR+S.SOCKADDR.PORT
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ldy #S.IP.SRC+3
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ldx #3
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.1 lda (ZPFrameInPtr),y
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sta SKT.REM.ADDR+S.SOCKADDR.ADDR,x
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dey
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dex
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bpl .1
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ldy #S.IP.DST+3
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ldx #3
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.2 lda (ZPFrameInPtr),y
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sta SKT.LOC.ADDR+S.SOCKADDR.ADDR,x
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dey
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dex
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bpl .2
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rts
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*--------------------------------------
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* FRM.NewIP
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* In:
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* Y,A = DataLen
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* X = S.IP.PROTOCOL.xxx
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* Out:
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* Y,A = Frame PTR
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* X = hMem
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*--------------------------------------
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FRM.NewIP stx .8+1
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>STYA ZPDataOutLen
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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
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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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bra .4
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.4 sta .5+1 save Header len for reset later
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clc
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adc ZPDataOutLen
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sta ZPFrameOutLen
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tay
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lda #0
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adc ZPDataOutLen+1
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sta ZPFrameOutLen+1
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>SYSCALL getmem
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bcs .9
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stx hFrameOut
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>STYA ZPFrameOutPtr
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ldy #0
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.5 ldx #$ff Self Modified, header length
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lda #0
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.6 sta (ZPFrameOutPtr),y
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iny
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dex
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bne .6
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tya
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* clc
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adc ZPFrameOutPtr
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sta ZPDataOutPtr
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lda #0
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adc ZPFrameOutPtr+1
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sta ZPDataOutPtr+1
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lda DCB.NIC+S.DCB.NIC.FLAGS
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and #S.DCB.NIC.FLAGS.IPOFFLOAD
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bne .7
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ldy #S.ETH.ETHERTYPE
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lda /S.ETH.ETHERTYPE.IP
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sta (ZPFrameOutPtr),y
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iny
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lda #S.ETH.ETHERTYPE.IP
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sta (ZPFrameOutPtr),y
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ldy #S.IP.V.IHL.DSCP.ECN
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lda #$45
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sta (ZPFrameOutPtr),y
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* iny
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* lda #$0
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* sta (ZPFrameOutPtr),y
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* ldy #S.IP.FRAGMENT.FLAGS
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* sta (ZPFrameOutPtr),y
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* iny
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* sta (ZPFrameOutPtr),y
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ldy #S.IP.IDENTIFICATION+1
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lda IP.ID
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ldx IP.ID+1
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inc
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bne .61
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inx
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stx IP.ID+1
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.61 sta IP.ID
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sta (ZPFrameOutPtr),y
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dey
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txa
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sta (ZPFrameOutPtr),y
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ldy #S.IP.TTL
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lda #K.IP.TTL
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sta (ZPFrameOutPtr),y
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.7 ldy #S.IP.PROTOCOL
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.8 lda #$ff
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sta (ZPFrameOutPtr),y
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.9 rts
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*--------------------------------------
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FRM.SendIP 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
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sta (ZPFrameOutPtr),y
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dey
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dex
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bpl .1
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lda DCB.NIC+S.DCB.NIC.FLAGS
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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
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lda ZPFrameOutLen
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sec
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sbc #S.ETH
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sta (ZPFrameOutPtr),y
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dey
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lda ZPFrameOutLen+1
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sbc /S.ETH
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sta (ZPFrameOutPtr),y
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lda #0
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ldy #S.IP.HDR.CHECKSUM
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sta (ZPFrameOutPtr),y
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iny
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sta (ZPFrameOutPtr),y
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stz IP.CHECKSUM RESET IP CHECKSUM
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stz IP.CHECKSUM+1
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clc
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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
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adc IP.CHECKSUM
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sta IP.CHECKSUM
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iny
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lda (ZPFrameOutPtr),y
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adc IP.CHECKSUM+1
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sta IP.CHECKSUM+1
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iny
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dex
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bne .2
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ldy #S.IP.HDR.CHECKSUM
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lda IP.CHECKSUM
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adc #0
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eor #$FF
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sta (ZPFrameOutPtr),y
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iny
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lda IP.CHECKSUM+1
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adc #0
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eor #$FF
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sta (ZPFrameOutPtr),y
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.21 ldy #S.IP.PROTOCOL
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lda (ZPFrameOutPtr),y
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cmp #S.IP.PROTOCOL.TCP
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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
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bne .4
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lda ZPFrameOutLen
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sec
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sbc #S.IP
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ldy #S.UDP.LENGTH+1
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sta (ZPFrameOutPtr),y
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lda ZPFrameOutLen+1
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sbc /S.IP
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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
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bne .5
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jsr IP.ComputeICMPChecksum
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.5 lda DCB.NIC+S.DCB.NIC.FLAGS
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and #S.DCB.NIC.FLAGS.ARPOFFLOAD
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bne .6
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jsr IP.SetDestMAC
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bcs FRM.Queue
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.6 jsr FRM.Send
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bcs FRM.Queue
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lda hFrameOut
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beq .9
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>SYSCALL FreeMem
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stz hFrameOut
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clc
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.9 rts
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*--------------------------------------
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FRM.Queue ldy hFrameOut no hFrame, cannot queue for retry
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beq .9
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ldx FRM.QUEUE.Head
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inx
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cpx #K.FRMQUEUE.SIZE
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bne .1
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ldx #0
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.1 cpx FRM.QUEUE.Tail
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beq .9
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ldy FRM.QUEUE.Head
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stx FRM.QUEUE.Head
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sta FRM.QUEUE.State,y
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lda #K.FRMSEND.RETRY
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sta FRM.QUEUE.Retry,y
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lda hFrameOut
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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
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rts
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.9 sec
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rts
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*--------------------------------------
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FRM.Retry ldx FRM.QUEUE.Tail
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.10 cpx FRM.QUEUE.Head
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beq .8 Queue is empty, exit...
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lda FRM.QUEUE.hMem,x
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>SYSCALL GetMemPtr
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>STYA ZPFrameOutPtr
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ldx FRM.QUEUE.Tail
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lda FRM.QUEUE.LenL,x
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sta ZPFrameOutLen
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lda FRM.QUEUE.LenH,x
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sta ZPFrameOutLen+1
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lda FRM.QUEUE.State,x
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cmp #ERR.ARP.PENDING
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bne .1
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jsr IP.SetDestMAC Err is ARP or higher, retry getting MAC
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bcs .2 still error getting dest MAC
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.1 jsr FRM.Send try sending again to DRV
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bcc .3
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.2 ldx FRM.QUEUE.Tail save error...
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sta FRM.QUEUE.State,x
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dec FRM.QUEUE.Retry,x
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bne .8 exit....until next run!
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.3 ldx FRM.QUEUE.Tail Success,or max retry, discard entry
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lda FRM.QUEUE.hMem,x
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>SYSCALL FreeMem
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ldx FRM.QUEUE.Tail
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inx
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cpx #K.FRMQUEUE.SIZE
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bne .5
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ldx #0
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.5 stx FRM.QUEUE.Tail
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bra .10
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.8 rts
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*--------------------------------------
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FRM.Send >PUSHW ZPFrameOutLen
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>PUSHW ZPFrameOutPtr
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lda IPCFG+S.IPCFG.hFD
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>SYSCALL write
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rts
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*--------------------------------------
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MAN
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SAVE /A2OSX.SRC/LIB/LIBTCPIP.S.FRM
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LOAD /A2OSX.SRC/LIB/LIBTCPIP.S
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ASM
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