mirror of
https://github.com/bobbimanners/emailler.git
synced 2024-11-12 14:04:34 +00:00
git-svn-id: http://svn.code.sf.net/p/netboot65/code@291 93682198-c243-4bdb-bd91-e943c89aac3b
This commit is contained in:
jonnosan
parent
ac4ee5bc92
commit
1dfbd2ea37
268
client/drivers/w5100_udp.s
Normal file
268
client/drivers/w5100_udp.s
Normal file
@ -0,0 +1,268 @@
|
||||
;UDP (user datagram protocol) functions
|
||||
|
||||
.include "../inc/common.i"
|
||||
.ifndef KPR_API_VERSION_NUMBER
|
||||
.define EQU =
|
||||
.include "../inc/kipper_constants.i"
|
||||
.endif
|
||||
|
||||
;.import dbg_dump_udp_header
|
||||
|
||||
.import ip65_error
|
||||
|
||||
.export udp_init
|
||||
.export udp_process
|
||||
.export udp_add_listener
|
||||
.export udp_remove_listener
|
||||
.export udp_send
|
||||
|
||||
.export udp_callback
|
||||
|
||||
.export udp_inp
|
||||
.export udp_outp
|
||||
.import eth_inp
|
||||
.import eth_outp
|
||||
|
||||
.exportzp udp_src_port
|
||||
.exportzp udp_dest_port
|
||||
.exportzp udp_len
|
||||
.exportzp udp_cksum
|
||||
.exportzp udp_data
|
||||
|
||||
.export udp_send_dest
|
||||
.export udp_send_src_port
|
||||
.export udp_send_dest_port
|
||||
.export udp_send_len
|
||||
|
||||
|
||||
.import copymem
|
||||
.importzp copy_src
|
||||
.importzp copy_dest
|
||||
|
||||
.import cfg_ip
|
||||
|
||||
.data
|
||||
udp_cbtmp: jmp $ffff ; temporary vector - gets filled in later
|
||||
|
||||
.bss
|
||||
|
||||
; argument for udp_add_listener
|
||||
udp_callback: .res 2 ;vector to routine to be called when a udp packet arrives
|
||||
|
||||
; arguments for udp_send
|
||||
udp_send_dest: .res 4 ;set to ip address that udp packet will be sent to
|
||||
udp_send_src_port: .res 2 ;set to port that udp packet will be sent from
|
||||
udp_send_dest_port: .res 2 ;set to port that udp packet will be sent to
|
||||
udp_send_len: .res 2 ;set to length of data to be sent in udp packet (excluding ethernet,ip & udp headers)
|
||||
|
||||
; udp listener callbacks
|
||||
udp_cbmax = 4
|
||||
udp_cbveclo: .res udp_cbmax ; table of listener vectors (lsb)
|
||||
udp_cbvechi: .res udp_cbmax ; table of listener vectors (msb)
|
||||
udp_cbportlo: .res udp_cbmax ; table of ports (lsb)
|
||||
udp_cbporthi: .res udp_cbmax ; table of ports (msb)
|
||||
udp_cbcount: .res 1 ; number of active listeners
|
||||
|
||||
; udp packet offsets
|
||||
udp_inp = eth_inp
|
||||
udp_outp = eth_outp
|
||||
udp_src_port = 0 ;offset of source port field in udp packet
|
||||
udp_dest_port = 2 ;offset of destination port field in udp packet
|
||||
udp_len = 4 ;offset of length field in udp packet
|
||||
udp_cksum = 6 ;offset of checksum field in udp packet
|
||||
udp_data = 8 ;offset of data in udp packet
|
||||
|
||||
; virtual header
|
||||
udp_vh = udp_outp - 12
|
||||
udp_vh_src = 0
|
||||
udp_vh_dest = 4
|
||||
udp_vh_zero = 8
|
||||
udp_vh_proto = 9
|
||||
udp_vh_len = 10
|
||||
|
||||
|
||||
; temp for port comparison
|
||||
port: .res 2
|
||||
|
||||
|
||||
.code
|
||||
|
||||
; initialize udp
|
||||
; inputs: none
|
||||
; outputs: none
|
||||
udp_init:
|
||||
lda #0
|
||||
sta udp_cbcount
|
||||
rts
|
||||
|
||||
|
||||
;process incoming udp packet
|
||||
;inputs:
|
||||
; eth_inp: should contain an ethernet frame encapsulating an inbound udp packet
|
||||
;outputs:
|
||||
; carry flag set if any error occured (including if no handler for specified port
|
||||
; was found)
|
||||
; carry flag clear if no error
|
||||
; if handler was found, an outbound message may be created, overwriting eth_outp
|
||||
|
||||
udp_process:
|
||||
lda udp_cbcount ; any installed udp listeners?
|
||||
beq @drop
|
||||
|
||||
tax ; check ports
|
||||
dex
|
||||
@checkport:
|
||||
lda udp_cbportlo,x
|
||||
cmp udp_inp + udp_dest_port + 1
|
||||
bne :+
|
||||
lda udp_cbporthi,x
|
||||
cmp udp_inp + udp_dest_port
|
||||
beq @handle
|
||||
: dex
|
||||
bpl @checkport
|
||||
|
||||
@drop:
|
||||
lda #KPR_ERROR_NO_SUCH_LISTENER
|
||||
sta ip65_error
|
||||
sec
|
||||
rts
|
||||
|
||||
@handle:
|
||||
lda udp_cbveclo,x ; copy vector
|
||||
sta udp_cbtmp + 1
|
||||
lda udp_cbvechi,x
|
||||
sta udp_cbtmp + 2
|
||||
jsr udp_cbtmp ; call listener
|
||||
clc
|
||||
rts
|
||||
|
||||
|
||||
;add a udp listener
|
||||
;inputs:
|
||||
; udp_callback: vector to call when udp packet arrives on specified port
|
||||
; AX: set to udp port to listen on
|
||||
;outputs:
|
||||
; carry flag set if too may listeners already installed, clear otherwise
|
||||
udp_add_listener:
|
||||
sta port
|
||||
stx port + 1
|
||||
|
||||
ldy udp_cbcount ; any listeners at all?
|
||||
beq @add
|
||||
cpy #udp_cbmax ; max?
|
||||
beq @full
|
||||
ldy #0
|
||||
@check:
|
||||
lda udp_cbportlo,y ; check if port is already handled
|
||||
cmp port
|
||||
bne :+
|
||||
lda udp_cbporthi,y
|
||||
cmp port + 1
|
||||
beq @busy
|
||||
: iny
|
||||
cpy udp_cbcount
|
||||
bne @check
|
||||
@add:
|
||||
inc udp_cbcount ; increase counter
|
||||
sta udp_cbportlo,y ; add port
|
||||
txa
|
||||
sta udp_cbporthi,y ; add port
|
||||
lda udp_callback ; and vector
|
||||
sta udp_cbveclo,y
|
||||
lda udp_callback + 1
|
||||
sta udp_cbvechi,y
|
||||
|
||||
clc
|
||||
rts
|
||||
@full:
|
||||
@busy:
|
||||
lda #KPR_ERROR_LISTENER_NOT_AVAILABLE
|
||||
sta ip65_error
|
||||
sec
|
||||
sec
|
||||
rts
|
||||
|
||||
|
||||
; remove an udp listener
|
||||
; inputs:
|
||||
; AX = port to stop listening on
|
||||
; outputs:
|
||||
; carry flag clear of handler found and removed
|
||||
; carry flag set if handler for specified port not found
|
||||
udp_remove_listener:
|
||||
sta port
|
||||
stx port + 1
|
||||
|
||||
ldy udp_cbcount ; any listeners installed?
|
||||
beq @notfound
|
||||
dey
|
||||
@check:
|
||||
lda udp_cbportlo,y ; check if port is handled
|
||||
cmp port
|
||||
bne :+
|
||||
lda udp_cbporthi,y
|
||||
cmp port + 1
|
||||
beq @remove
|
||||
: dey
|
||||
bpl @check
|
||||
@notfound:
|
||||
sec
|
||||
rts
|
||||
@remove:
|
||||
tya ; number of listeners below
|
||||
eor #$ff
|
||||
clc
|
||||
adc udp_cbcount
|
||||
beq @done
|
||||
@move:
|
||||
tax ; number of items to move
|
||||
: lda udp_cbportlo + 1,y ; move ports
|
||||
sta udp_cbportlo,y
|
||||
lda udp_cbporthi + 1,y
|
||||
sta udp_cbporthi,y
|
||||
lda udp_cbveclo + 1,y ; move vectors
|
||||
sta udp_cbveclo,y
|
||||
lda udp_cbvechi + 1,y
|
||||
sta udp_cbvechi,y
|
||||
iny
|
||||
dex
|
||||
bne :-
|
||||
@done:
|
||||
dec udp_cbcount ; decrement counter
|
||||
clc
|
||||
rts
|
||||
|
||||
|
||||
;send udp packet
|
||||
;inputs:
|
||||
; udp_send_dest: destination ip address (4 bytes)
|
||||
; udp_send_dest_port: destination port (2 bytes)
|
||||
; udp_send_src_port: source port (2 bytes)
|
||||
; udp_send_len: length of data to send (exclusive of any headers)
|
||||
; AX: pointer to buffer containing data to be sent
|
||||
;outputs:
|
||||
; carry flag is set if an error occured, clear otherwise
|
||||
udp_send:
|
||||
stax copy_src ; copy data to output buffer
|
||||
rts;FIXME
|
||||
|
||||
|
||||
|
||||
;-- LICENSE FOR w5100_udp.s --
|
||||
; The contents of this file are subject to the Mozilla Public License
|
||||
; Version 1.1 (the "License"); you may not use this file except in
|
||||
; compliance with the License. You may obtain a copy of the License at
|
||||
; http://www.mozilla.org/MPL/
|
||||
;
|
||||
; Software distributed under the License is distributed on an "AS IS"
|
||||
; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
|
||||
; License for the specific language governing rights and limitations
|
||||
; under the License.
|
||||
;
|
||||
; The Original Code is ip65.
|
||||
;
|
||||
; The Initial Developer of the Original Code is Jonno Downes,
|
||||
; jonno@jamtronix.com.
|
||||
; Portions created by the Initial Developer are Copyright (C) 2010
|
||||
; Jonno Downes. All Rights Reserved.
|
||||
; -- LICENSE END --
|
||||
Loading…
Reference in New Issue
Block a user