mirror of
https://github.com/A2osX/A2osX.git
synced 2024-05-31 16:41:30 +00:00
300 lines
5.5 KiB
Plaintext
300 lines
5.5 KiB
Plaintext
NEW
|
||
PREFIX /A2OSX.BUILD
|
||
AUTO 4,1
|
||
.LIST OFF
|
||
*--------------------------------------
|
||
* FRM.New
|
||
* 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
|
||
|
||
>SYSCALL 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 DCB.NIC+S.DCB.NIC.FLAGS
|
||
and #S.DCB.NIC.FLAGS.IPOFFLOAD
|
||
bne .7
|
||
|
||
ldy #S.ETH.ETHERTYPE
|
||
lda /S.ETH.ETHERTYPE.IP
|
||
sta (ZPFrameOutPtr),y
|
||
iny
|
||
lda #S.ETH.ETHERTYPE.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
|
||
*--------------------------------------
|
||
FRM.SendIP 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 DCB.NIC+S.DCB.NIC.FLAGS
|
||
and #S.DCB.NIC.FLAGS.IPOFFLOAD
|
||
bne .21
|
||
|
||
ldy #S.IP.TOTAL.LENGTH+1
|
||
lda ZPFrameOutLen
|
||
sec
|
||
sbc #S.ETH-2
|
||
sta (ZPFrameOutPtr),y
|
||
dey
|
||
lda ZPFrameOutLen+1
|
||
sbc /S.ETH-2
|
||
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 TCP.ComputeChecksum
|
||
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 UDP.ComputeChecksum
|
||
bra .5
|
||
|
||
.4 cmp #S.IP.PROTOCOL.ICMP
|
||
bne .5
|
||
jsr ICMP.ComputeChecksum
|
||
|
||
.5 lda DCB.NIC+S.DCB.NIC.FLAGS
|
||
and #S.DCB.NIC.FLAGS.ARPOFFLOAD
|
||
bne .6
|
||
|
||
jsr IP.SetDestMAC
|
||
bcs FRM.Queue
|
||
|
||
.6 >LDYA ZPFrameOutPtr
|
||
jsr FRM.Send.YA
|
||
|
||
bcs FRM.Queue
|
||
|
||
lda hFrameOut
|
||
beq .9
|
||
>SYSCALL FreeMem
|
||
|
||
clc
|
||
.9 rts
|
||
*--------------------------------------
|
||
FRM.Queue ldy hFrameOut no hFrame, cannot queue for retry
|
||
beq .9
|
||
|
||
ldx FRM.QUEUE.Head
|
||
inx
|
||
cpx #K.FRMQUEUE.SIZE
|
||
bne .1
|
||
ldx #0
|
||
.1 cpx FRM.QUEUE.Tail
|
||
beq .9
|
||
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
|
||
clc
|
||
rts
|
||
|
||
.9 sec
|
||
rts
|
||
*--------------------------------------
|
||
FRM.Retry ldx FRM.QUEUE.Tail
|
||
|
||
.10 cpx FRM.QUEUE.Head
|
||
beq .8 Queue is empty, exit....
|
||
lda FRM.QUEUE.hMem,x
|
||
>SYSCALL GetMemPtr
|
||
>STYA ZPFrameOutPtr
|
||
|
||
ldx FRM.QUEUE.Tail
|
||
lda FRM.QUEUE.State,x
|
||
cmp #ERR.DEV+1 Device error ?
|
||
bcc .1 yes, retry sending...
|
||
jsr IP.SetDestMAC Err is ARP or higher, retry getting MAC
|
||
bcs .2 still error getting dest MAC
|
||
|
||
.1 >LDYA ZPFrameOutPtr
|
||
jsr FRM.Send.YA try sending again to DRV
|
||
bcc .3
|
||
|
||
.2 ldx FRM.QUEUE.Tail save error...
|
||
sta FRM.QUEUE.State,x
|
||
dec FRM.QUEUE.Retry,x
|
||
bne .8 exit....until next run!
|
||
|
||
.3 ldx FRM.QUEUE.Tail Success,or max retry, discard entry
|
||
lda FRM.QUEUE.hMem,x
|
||
>SYSCALL FreeMem
|
||
|
||
.4 ldx FRM.QUEUE.Tail
|
||
inx
|
||
cpx #K.FRMQUEUE.SIZE
|
||
bne .5
|
||
ldx #0
|
||
.5 stx FRM.QUEUE.Tail
|
||
bra .10
|
||
|
||
.8 rts
|
||
*--------------------------------------
|
||
FRM.Send.YA *****>PUSHYA
|
||
|
||
>PUSHW L.IOCTL
|
||
>PUSHBI IOCTL.WRITE
|
||
lda IPCFG+S.IPCFG.HDEV
|
||
|
||
>SYSCALL IOCTL try sending again to DRV
|
||
rts
|
||
*--------------------------------------
|
||
MAN
|
||
SAVE /A2OSX.SRC/LIB/LIBTCPIP.S.FRM
|
||
LOAD /A2OSX.SRC/LIB/LIBTCPIP.S
|
||
ASM
|