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