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\ Hypervisor Software File: udp-reqs.fth
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id: @(#)udp-reqs.fth 1.1 04/09/07
purpose: UDP socket interface
copyright: Copyright 2004 Sun Microsystems, Inc. All Rights Reserved
copyright: Use is subject to license terms.
0 value udp-last-port# \ Last UDP port number assigned
: udp-next-port ( -- port# )
udp-last-port# 1+ dup d# 32768 d# 65535 between 0= if
then dup to udp-last-port#
\ Allocate/initialize protocol control blocks and link structures together.
: udp-soattach ( sockaddr -- )
udp-inpcb-list inpcb-alloc ( sockaddr inpcb )
ucb-alloc ( sockaddr inpcb ucb )
2dup >ucb-inpcb ! over >in-ppcb ! ( sockaddr inpcb )
2dup >in-socket ! swap >so-inpcb ! ( )
\ Deallocate Internet PCB and UDP control blocks.
: udp-sodetach ( sockaddr -- )
dup so>inpcb ( sockaddr inpcb )
dup inpcb>ucb ucb-free ( sockaddr inpcb )
\ Bind local address and port number to socket.
: udp-sobind ( sockaddr addr addrlen -- )
drop insock>addr,port dup 0= if ( sockaddr addr port )
drop udp-next-port ( sockaddr addr lport )
then ( sockaddr addr lport )
rot so>inpcb -rot inpcb-bind ( )
\ Send data to specified endpoint. The unconnected socket is temporarily
\ connected to the specified destination.
: udp-sosendto ( sockaddr buf nbytes flags toaddr tolen -- #sent | error# )
drop nip ( sockaddr buf nbytes toaddr )
>r rot so>inpcb r> ( buf nbytes inpcb toaddr )
over swap insock>addr,port inpcb-connect ( buf nbytes inpcb )
dup 2swap udp-output ( inpcb #sent )
swap inpcb-disconnect ( #sent )
\ Copy data from the datagram to the user buffer.
: udp-getdata ( pkt buf nbytes -- nread )
rot dup ip-len@ ( buf len pkt pktlen )
/udpip-header encapsulated-data ( buf len data datalen )
2swap rot min dup >r move r> ( len' )
\ Get source of the message.
: udp-getpeeraddr ( pkt peeraddr addrlen -- )
/insock swap l! ( pkt peeraddr )
swap dup >ip-src swap >udp-sport ntohw@ insock-init ( )
\ Receive a message on the UDP socket. The entire message should be read
\ in one single operation. If the message is longer than the size of
\ the buffer, excess data will be discarded. If the source of the
\ message is requested, get that information from the datagram.
: udp-sorecvfrom ( sockaddr buf nbytes flags from fromlen -- nread )
>r >r drop ( sockaddr buf nbytes )
rot so>ucb ( buf nbytes ucb )
dup >ucb-dgramq queue-empty? if ( buf nbytes ucb )
udp-poll ( buf nbytes ucb )
>ucb-dgramq pkt-dequeue ?dup if ( buf nbytes pkt )
dup 2swap udp-getdata ( pkt nread )
over r> r> over if ( pkt nread pkt from fromlen )
udp-getpeeraddr ( pkt nread )
else ( pkt nread pkt from fromlen )
2drop r> r> 2drop 0 ( 0 ) ( r: )
\ Process a UDP user request.
: udp-prreq-execute ( ?? req# -- ?? )
PRREQ_RECVFROM of udp-sorecvfrom endof
PRREQ_SENDTO of udp-sosendto endof
PRREQ_ATTACH of udp-soattach endof
PRREQ_DETACH of udp-sodetach endof
PRREQ_BIND of udp-sobind endof
PRREQ_CONNECT of 3drop EOPNOTSUPP endof \ Not supported
PRREQ_SEND of 2drop 2drop EOPNOTSUPP endof \ Not supported
PRREQ_RECV of 2drop 2drop EOPNOTSUPP endof \ Not supported
PRREQ_LISTEN of 2drop EOPNOTSUPP endof \ Not applicable
PRREQ_ACCEPT of 3drop EOPNOTSUPP endof \ Not applicable
projects / OpenSPARC-T2-SAM / blob