578 lines
13 KiB
C
578 lines
13 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1990,1994 Regents of The University of Michigan.
|
||
|
|
* All Rights Reserved. See COPYRIGHT.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/errno.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/param.h>
|
||
|
|
#include <sys/systm.h>
|
||
|
|
#if defined( __FreeBSD__ )
|
||
|
|
#include <sys/proc.h>
|
||
|
|
#endif __FreeBSD__
|
||
|
|
#ifdef ibm032
|
||
|
|
#include <sys/dir.h>
|
||
|
|
#endif ibm032
|
||
|
|
#ifndef __FreeBSD__
|
||
|
|
#include <sys/user.h>
|
||
|
|
#endif
|
||
|
|
#include <sys/mbuf.h>
|
||
|
|
#include <sys/ioctl.h>
|
||
|
|
#include <sys/socket.h>
|
||
|
|
#include <sys/socketvar.h>
|
||
|
|
#include <sys/protosw.h>
|
||
|
|
#include <net/if.h>
|
||
|
|
#include <net/route.h>
|
||
|
|
#include <netinet/in.h>
|
||
|
|
#include <netinet/if_ether.h>
|
||
|
|
#ifdef _IBMR2
|
||
|
|
#include <net/spl.h>
|
||
|
|
#endif _IBMR2
|
||
|
|
|
||
|
|
#include "at.h"
|
||
|
|
#include "at_var.h"
|
||
|
|
#include "ddp_var.h"
|
||
|
|
#include "aarp.h"
|
||
|
|
#include "endian.h"
|
||
|
|
#include <netatalk/at_extern.h>
|
||
|
|
|
||
|
|
static void at_pcbdisconnect( struct ddpcb *ddp );
|
||
|
|
static void at_sockaddr( struct ddpcb *ddp, struct mbuf *addr );
|
||
|
|
static int at_pcbsetaddr( struct ddpcb *ddp, struct mbuf *addr, struct proc *p);
|
||
|
|
static int at_pcbconnect( struct ddpcb *ddp, struct mbuf *addr, struct proc *p);
|
||
|
|
static void at_pcbdetach( struct socket *so, struct ddpcb *ddp);
|
||
|
|
static int at_pcballoc( struct socket *so );
|
||
|
|
|
||
|
|
struct ddpcb *ddp_ports[ ATPORT_LAST ];
|
||
|
|
struct ddpcb *ddpcb = NULL;
|
||
|
|
u_long ddp_sendspace = DDP_MAXSZ; /* Max ddp size + 1 (ddp_type) */
|
||
|
|
u_long ddp_recvspace = 10 * ( 587 + sizeof( struct sockaddr_at ));
|
||
|
|
|
||
|
|
/*ARGSUSED*/
|
||
|
|
int
|
||
|
|
ddp_usrreq( struct socket *so, int req, struct mbuf *m,
|
||
|
|
struct mbuf *addr, struct mbuf *rights)
|
||
|
|
{
|
||
|
|
#if defined( __FreeBSD__ )
|
||
|
|
struct proc *p = curproc; /* XXX */
|
||
|
|
#endif __FreeBSD__
|
||
|
|
struct ddpcb *ddp;
|
||
|
|
int error = 0;
|
||
|
|
|
||
|
|
ddp = sotoddpcb( so );
|
||
|
|
|
||
|
|
if ( req == PRU_CONTROL ) {
|
||
|
|
return( at_control( (int) m, (caddr_t) addr,
|
||
|
|
(struct ifnet *) rights
|
||
|
|
#if defined( __FreeBSD__ )
|
||
|
|
, (struct proc *)p
|
||
|
|
#endif __FreeBSD__
|
||
|
|
));
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( rights && rights->m_len ) {
|
||
|
|
error = EINVAL;
|
||
|
|
goto release;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ddp == NULL && req != PRU_ATTACH ) {
|
||
|
|
error = EINVAL;
|
||
|
|
goto release;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch ( req ) {
|
||
|
|
case PRU_ATTACH :
|
||
|
|
if ( ddp != NULL ) {
|
||
|
|
error = EINVAL;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (( error = at_pcballoc( so )) != 0 ) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
error = soreserve( so, ddp_sendspace, ddp_recvspace );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PRU_DETACH :
|
||
|
|
at_pcbdetach( so, ddp );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PRU_BIND :
|
||
|
|
error = at_pcbsetaddr( ddp, addr
|
||
|
|
#if defined( __FreeBSD__ )
|
||
|
|
, p
|
||
|
|
#endif __FreeBSD__
|
||
|
|
);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PRU_SOCKADDR :
|
||
|
|
at_sockaddr( ddp, addr );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PRU_CONNECT:
|
||
|
|
if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
|
||
|
|
error = EISCONN;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
error = at_pcbconnect( ddp, addr
|
||
|
|
#if defined( __FreeBSD__ )
|
||
|
|
, p
|
||
|
|
#endif __FreeBSD__
|
||
|
|
);
|
||
|
|
if ( error == 0 )
|
||
|
|
soisconnected( so );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PRU_DISCONNECT:
|
||
|
|
if ( ddp->ddp_fsat.sat_addr.s_node == ATADDR_ANYNODE ) {
|
||
|
|
error = ENOTCONN;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
at_pcbdisconnect( ddp );
|
||
|
|
soisdisconnected( so );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PRU_SHUTDOWN:
|
||
|
|
socantsendmore( so );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PRU_SEND: {
|
||
|
|
int s = 0;
|
||
|
|
|
||
|
|
if ( addr ) {
|
||
|
|
if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
|
||
|
|
error = EISCONN;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
s = splnet();
|
||
|
|
error = at_pcbconnect( ddp, addr
|
||
|
|
#if defined( __FreeBSD__ )
|
||
|
|
, p
|
||
|
|
#endif __FreeBSD__
|
||
|
|
);
|
||
|
|
if ( error ) {
|
||
|
|
splx( s );
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if ( ddp->ddp_fsat.sat_port == ATADDR_ANYPORT ) {
|
||
|
|
error = ENOTCONN;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
error = ddp_output( ddp, m );
|
||
|
|
m = NULL;
|
||
|
|
if ( addr ) {
|
||
|
|
at_pcbdisconnect( ddp );
|
||
|
|
splx( s );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PRU_ABORT:
|
||
|
|
soisdisconnected( so );
|
||
|
|
at_pcbdetach( so, ddp );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PRU_LISTEN:
|
||
|
|
case PRU_CONNECT2:
|
||
|
|
case PRU_ACCEPT:
|
||
|
|
case PRU_SENDOOB:
|
||
|
|
case PRU_FASTTIMO:
|
||
|
|
case PRU_SLOWTIMO:
|
||
|
|
case PRU_PROTORCV:
|
||
|
|
case PRU_PROTOSEND:
|
||
|
|
error = EOPNOTSUPP;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PRU_RCVD:
|
||
|
|
case PRU_RCVOOB:
|
||
|
|
/*
|
||
|
|
* Don't mfree. Good architecture...
|
||
|
|
*/
|
||
|
|
return( EOPNOTSUPP );
|
||
|
|
|
||
|
|
case PRU_SENSE:
|
||
|
|
/*
|
||
|
|
* 1. Don't return block size.
|
||
|
|
* 2. Don't mfree.
|
||
|
|
*/
|
||
|
|
return( 0 );
|
||
|
|
|
||
|
|
default:
|
||
|
|
error = EOPNOTSUPP;
|
||
|
|
}
|
||
|
|
|
||
|
|
release:
|
||
|
|
if ( m != NULL ) {
|
||
|
|
m_freem( m );
|
||
|
|
}
|
||
|
|
return( error );
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
at_sockaddr( struct ddpcb *ddp, struct mbuf *addr)
|
||
|
|
{
|
||
|
|
struct sockaddr_at *sat;
|
||
|
|
|
||
|
|
addr->m_len = sizeof( struct sockaddr_at );
|
||
|
|
sat = mtod( addr, struct sockaddr_at *);
|
||
|
|
*sat = ddp->ddp_lsat;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
at_pcbsetaddr( struct ddpcb *ddp, struct mbuf *addr, struct proc *p )
|
||
|
|
{
|
||
|
|
struct sockaddr_at lsat, *sat;
|
||
|
|
struct at_ifaddr *aa;
|
||
|
|
struct ddpcb *ddpp;
|
||
|
|
|
||
|
|
if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT ) { /* shouldn't be bound */
|
||
|
|
return( EINVAL );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( addr != 0 ) { /* validate passed address */
|
||
|
|
sat = mtod( addr, struct sockaddr_at *);
|
||
|
|
if ( addr->m_len != sizeof( *sat )) {
|
||
|
|
return( EINVAL );
|
||
|
|
}
|
||
|
|
if ( sat->sat_family != AF_APPLETALK ) {
|
||
|
|
return( EAFNOSUPPORT );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( sat->sat_addr.s_node != ATADDR_ANYNODE ||
|
||
|
|
sat->sat_addr.s_net != ATADDR_ANYNET ) {
|
||
|
|
for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
|
||
|
|
if (( sat->sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) &&
|
||
|
|
( sat->sat_addr.s_node == AA_SAT( aa )->sat_addr.s_node )) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ( !aa ) {
|
||
|
|
return( EADDRNOTAVAIL );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( sat->sat_port != ATADDR_ANYPORT ) {
|
||
|
|
if ( sat->sat_port < ATPORT_FIRST ||
|
||
|
|
sat->sat_port >= ATPORT_LAST ) {
|
||
|
|
return( EINVAL );
|
||
|
|
}
|
||
|
|
#ifdef BSD4_4
|
||
|
|
if ( sat->sat_port < ATPORT_RESERVED &&
|
||
|
|
#if defined( __FreeBSD__ )
|
||
|
|
suser( p->p_ucred, &p->p_acflag )
|
||
|
|
#else
|
||
|
|
suser( u.u_cred, &u.u_acflag )
|
||
|
|
#endif __FreeBSD__
|
||
|
|
) {
|
||
|
|
return( EACCES );
|
||
|
|
}
|
||
|
|
#else BSD4_4
|
||
|
|
if ( sat->sat_port < ATPORT_RESERVED && ( !suser())) {
|
||
|
|
return( EACCES );
|
||
|
|
}
|
||
|
|
#endif BSD4_4
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
bzero( (caddr_t)&lsat, sizeof( struct sockaddr_at ));
|
||
|
|
#ifdef BSD4_4
|
||
|
|
lsat.sat_len = sizeof(struct sockaddr_at);
|
||
|
|
lsat.sat_addr.s_node = ATADDR_ANYNODE;
|
||
|
|
lsat.sat_addr.s_net = ATADDR_ANYNET;
|
||
|
|
#endif BSD4_4
|
||
|
|
lsat.sat_family = AF_APPLETALK;
|
||
|
|
sat = &lsat;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( sat->sat_addr.s_node == ATADDR_ANYNODE &&
|
||
|
|
sat->sat_addr.s_net == ATADDR_ANYNET ) {
|
||
|
|
if ( at_ifaddr == NULL ) {
|
||
|
|
return( EADDRNOTAVAIL );
|
||
|
|
}
|
||
|
|
sat->sat_addr = AA_SAT( at_ifaddr )->sat_addr;
|
||
|
|
}
|
||
|
|
ddp->ddp_lsat = *sat;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Choose port.
|
||
|
|
*/
|
||
|
|
if ( sat->sat_port == ATADDR_ANYPORT ) {
|
||
|
|
for ( sat->sat_port = ATPORT_RESERVED;
|
||
|
|
sat->sat_port < ATPORT_LAST; sat->sat_port++ ) {
|
||
|
|
if ( ddp_ports[ sat->sat_port - 1 ] == 0 ) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ( sat->sat_port == ATPORT_LAST ) {
|
||
|
|
return( EADDRNOTAVAIL );
|
||
|
|
}
|
||
|
|
ddp->ddp_lsat.sat_port = sat->sat_port;
|
||
|
|
ddp_ports[ sat->sat_port - 1 ] = ddp;
|
||
|
|
} else {
|
||
|
|
for ( ddpp = ddp_ports[ sat->sat_port - 1 ]; ddpp;
|
||
|
|
ddpp = ddpp->ddp_pnext ) {
|
||
|
|
if ( ddpp->ddp_lsat.sat_addr.s_net == sat->sat_addr.s_net &&
|
||
|
|
ddpp->ddp_lsat.sat_addr.s_node == sat->sat_addr.s_node ) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ( ddpp != NULL ) {
|
||
|
|
return( EADDRINUSE );
|
||
|
|
}
|
||
|
|
ddp->ddp_pnext = ddp_ports[ sat->sat_port - 1 ];
|
||
|
|
ddp_ports[ sat->sat_port - 1 ] = ddp;
|
||
|
|
if ( ddp->ddp_pnext ) {
|
||
|
|
ddp->ddp_pnext->ddp_pprev = ddp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return( 0 );
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
at_pcbconnect( struct ddpcb *ddp, struct mbuf *addr, struct proc *p)
|
||
|
|
{
|
||
|
|
struct sockaddr_at *sat = mtod( addr, struct sockaddr_at *);
|
||
|
|
struct route *ro;
|
||
|
|
struct at_ifaddr *aa = 0;
|
||
|
|
struct ifnet *ifp;
|
||
|
|
u_short hintnet = 0, net;
|
||
|
|
|
||
|
|
if ( addr->m_len != sizeof( *sat ))
|
||
|
|
return( EINVAL );
|
||
|
|
if ( sat->sat_family != AF_APPLETALK ) {
|
||
|
|
return( EAFNOSUPPORT );
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Under phase 2, network 0 means "the network". We take "the
|
||
|
|
* network" to mean the network the control block is bound to.
|
||
|
|
* If the control block is not bound, there is an error.
|
||
|
|
*/
|
||
|
|
if ( sat->sat_addr.s_net == ATADDR_ANYNET
|
||
|
|
&& sat->sat_addr.s_node != ATADDR_ANYNODE ) {
|
||
|
|
if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
|
||
|
|
return( EADDRNOTAVAIL );
|
||
|
|
}
|
||
|
|
hintnet = ddp->ddp_lsat.sat_addr.s_net;
|
||
|
|
}
|
||
|
|
|
||
|
|
ro = &ddp->ddp_route;
|
||
|
|
/*
|
||
|
|
* If we've got an old route for this pcb, check that it is valid.
|
||
|
|
* If we've changed our address, we may have an old "good looking"
|
||
|
|
* route here. Attempt to detect it.
|
||
|
|
*/
|
||
|
|
if ( ro->ro_rt ) {
|
||
|
|
if ( hintnet ) {
|
||
|
|
net = hintnet;
|
||
|
|
} else {
|
||
|
|
net = sat->sat_addr.s_net;
|
||
|
|
}
|
||
|
|
aa = 0;
|
||
|
|
if ( ifp = ro->ro_rt->rt_ifp ) {
|
||
|
|
for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
|
||
|
|
if ( aa->aa_ifp == ifp &&
|
||
|
|
ntohs( net ) >= ntohs( aa->aa_firstnet ) &&
|
||
|
|
ntohs( net ) <= ntohs( aa->aa_lastnet )) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ( aa == NULL || ( satosat( &ro->ro_dst )->sat_addr.s_net !=
|
||
|
|
( hintnet ? hintnet : sat->sat_addr.s_net ) ||
|
||
|
|
satosat( &ro->ro_dst )->sat_addr.s_node !=
|
||
|
|
sat->sat_addr.s_node )) {
|
||
|
|
#ifdef ultrix
|
||
|
|
rtfree( ro->ro_rt );
|
||
|
|
#else ultrix
|
||
|
|
RTFREE( ro->ro_rt );
|
||
|
|
#endif ultrix
|
||
|
|
ro->ro_rt = (struct rtentry *)0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If we've got no route for this interface, try to find one.
|
||
|
|
*/
|
||
|
|
if ( ro->ro_rt == (struct rtentry *)0 ||
|
||
|
|
ro->ro_rt->rt_ifp == (struct ifnet *)0 ) {
|
||
|
|
#ifdef BSD4_4
|
||
|
|
ro->ro_dst.sa_len = sizeof( struct sockaddr_at );
|
||
|
|
#endif BSD4_4
|
||
|
|
ro->ro_dst.sa_family = AF_APPLETALK;
|
||
|
|
if ( hintnet ) {
|
||
|
|
satosat( &ro->ro_dst )->sat_addr.s_net = hintnet;
|
||
|
|
} else {
|
||
|
|
satosat( &ro->ro_dst )->sat_addr.s_net = sat->sat_addr.s_net;
|
||
|
|
}
|
||
|
|
satosat( &ro->ro_dst )->sat_addr.s_node = sat->sat_addr.s_node;
|
||
|
|
rtalloc( ro );
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Make sure any route that we have has a valid interface.
|
||
|
|
*/
|
||
|
|
aa = 0;
|
||
|
|
if ( ro->ro_rt && ( ifp = ro->ro_rt->rt_ifp )) {
|
||
|
|
for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
|
||
|
|
if ( aa->aa_ifp == ifp ) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ( aa == 0 ) {
|
||
|
|
return( ENETUNREACH );
|
||
|
|
}
|
||
|
|
|
||
|
|
ddp->ddp_fsat = *sat;
|
||
|
|
if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
|
||
|
|
return( at_pcbsetaddr( ddp, (struct mbuf *)0
|
||
|
|
#if defined( __FreeBSD__ )
|
||
|
|
, p
|
||
|
|
#endif __FreeBSD__
|
||
|
|
));
|
||
|
|
}
|
||
|
|
return( 0 );
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
at_pcbdisconnect( struct ddpcb *ddp )
|
||
|
|
{
|
||
|
|
ddp->ddp_fsat.sat_addr.s_net = ATADDR_ANYNET;
|
||
|
|
ddp->ddp_fsat.sat_addr.s_node = ATADDR_ANYNODE;
|
||
|
|
ddp->ddp_fsat.sat_port = ATADDR_ANYPORT;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
at_pcballoc( struct socket *so )
|
||
|
|
{
|
||
|
|
struct ddpcb *ddp;
|
||
|
|
struct mbuf *m;
|
||
|
|
|
||
|
|
m = m_getclr( M_WAIT, MT_PCB );
|
||
|
|
ddp = mtod( m, struct ddpcb * );
|
||
|
|
ddp->ddp_lsat.sat_port = ATADDR_ANYPORT;
|
||
|
|
|
||
|
|
ddp->ddp_next = ddpcb;
|
||
|
|
ddp->ddp_prev = NULL;
|
||
|
|
ddp->ddp_pprev = NULL;
|
||
|
|
ddp->ddp_pnext = NULL;
|
||
|
|
if ( ddpcb ) {
|
||
|
|
ddpcb->ddp_prev = ddp;
|
||
|
|
}
|
||
|
|
ddpcb = ddp;
|
||
|
|
|
||
|
|
ddp->ddp_socket = so;
|
||
|
|
so->so_pcb = (caddr_t)ddp;
|
||
|
|
return( 0 );
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
at_pcbdetach( struct socket *so, struct ddpcb *ddp)
|
||
|
|
{
|
||
|
|
soisdisconnected( so );
|
||
|
|
so->so_pcb = 0;
|
||
|
|
sofree( so );
|
||
|
|
|
||
|
|
/* remove ddp from ddp_ports list */
|
||
|
|
if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT &&
|
||
|
|
ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] != NULL ) {
|
||
|
|
if ( ddp->ddp_pprev != NULL ) {
|
||
|
|
ddp->ddp_pprev->ddp_pnext = ddp->ddp_pnext;
|
||
|
|
} else {
|
||
|
|
ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] = ddp->ddp_pnext;
|
||
|
|
}
|
||
|
|
if ( ddp->ddp_pnext != NULL ) {
|
||
|
|
ddp->ddp_pnext->ddp_pprev = ddp->ddp_pprev;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ddp->ddp_route.ro_rt ) {
|
||
|
|
rtfree( ddp->ddp_route.ro_rt );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ddp->ddp_prev ) {
|
||
|
|
ddp->ddp_prev->ddp_next = ddp->ddp_next;
|
||
|
|
} else {
|
||
|
|
ddpcb = ddp->ddp_next;
|
||
|
|
}
|
||
|
|
if ( ddp->ddp_next ) {
|
||
|
|
ddp->ddp_next->ddp_prev = ddp->ddp_prev;
|
||
|
|
}
|
||
|
|
|
||
|
|
(void) m_free( dtom( ddp ));
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* For the moment, this just find the pcb with the correct local address.
|
||
|
|
* In the future, this will actually do some real searching, so we can use
|
||
|
|
* the sender's address to do de-multiplexing on a single port to many
|
||
|
|
* sockets (pcbs).
|
||
|
|
*/
|
||
|
|
struct ddpcb *
|
||
|
|
ddp_search( struct sockaddr_at *from, struct sockaddr_at *to,
|
||
|
|
struct at_ifaddr *aa)
|
||
|
|
{
|
||
|
|
struct ddpcb *ddp;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Check for bad ports.
|
||
|
|
*/
|
||
|
|
if ( to->sat_port < ATPORT_FIRST || to->sat_port >= ATPORT_LAST ) {
|
||
|
|
return( NULL );
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Make sure the local address matches the sent address. What about
|
||
|
|
* the interface?
|
||
|
|
*/
|
||
|
|
for ( ddp = ddp_ports[ to->sat_port - 1 ]; ddp; ddp = ddp->ddp_pnext ) {
|
||
|
|
/* XXX should we handle 0.YY? */
|
||
|
|
|
||
|
|
/* XXXX.YY to socket on destination interface */
|
||
|
|
if ( to->sat_addr.s_net == ddp->ddp_lsat.sat_addr.s_net &&
|
||
|
|
to->sat_addr.s_node == ddp->ddp_lsat.sat_addr.s_node ) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 0.255 to socket on receiving interface */
|
||
|
|
if ( to->sat_addr.s_node == ATADDR_BCAST && ( to->sat_addr.s_net == 0 ||
|
||
|
|
to->sat_addr.s_net == ddp->ddp_lsat.sat_addr.s_net ) &&
|
||
|
|
ddp->ddp_lsat.sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* XXXX.0 to socket on destination interface */
|
||
|
|
if ( to->sat_addr.s_net == aa->aa_firstnet &&
|
||
|
|
to->sat_addr.s_node == 0 &&
|
||
|
|
ntohs( ddp->ddp_lsat.sat_addr.s_net ) >=
|
||
|
|
ntohs( aa->aa_firstnet ) &&
|
||
|
|
ntohs( ddp->ddp_lsat.sat_addr.s_net ) <=
|
||
|
|
ntohs( aa->aa_lastnet )) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return( ddp );
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
ddp_init(void )
|
||
|
|
{
|
||
|
|
atintrq1.ifq_maxlen = IFQ_MAXLEN;
|
||
|
|
atintrq2.ifq_maxlen = IFQ_MAXLEN;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
ddp_clean(void )
|
||
|
|
{
|
||
|
|
struct ddpcb *ddp;
|
||
|
|
|
||
|
|
for ( ddp = ddpcb; ddp; ddp = ddp->ddp_next ) {
|
||
|
|
at_pcbdetach( ddp->ddp_socket, ddp );
|
||
|
|
}
|
||
|
|
}
|