+++ /dev/null
-/* $Id: if.c,v 1.3 2005-04-28 20:50:07 bfernhomberg Exp $
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif /* HAVE_CONFIG_H */
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/sockio.h>
-#include <sys/stream.h>
-#include <sys/kmem.h>
-#include <sys/dlpi.h>
-#include <sys/cmn_err.h>
-#include <sys/errno.h>
-#include <sys/byteorder.h>
-#include <sys/ethernet.h>
-#include <sys/ddi.h>
-#include <net/if.h>
-#include <netinet/arp.h>
-
-#ifdef STDC_HEADERS
-#include <strings.h>
-#else
-#include <string.h>
-#endif
-
-#include <netatalk/at.h>
-#include <netatalk/aarp.h>
-
-#include "if.h"
-#include "rt.h"
-#include "ioc.h"
-
-static struct atif_data *interfaces = NULL;
-
- struct atif_data *
-if_primary()
-{
- return( interfaces );
-}
-
- struct atif_data *
-if_alloc( queue_t *q )
-{
- struct atif_data *aid;
-
- if (( aid = kmem_zalloc( sizeof( struct atif_data ), KM_SLEEP )) == NULL ) {
- return( NULL );
- }
- aid->aid_q = q;
- aid->aid_state = DL_UNATTACHED;
-
- return( aid );
-}
-
-/*
- * Name an interface, insert it in our list of interfaces. If this is the
- * first interface, create the loopback interface. If it's not the first
- * interfaces, keep the first interface the same, i.e. the first configured
- * interface should be the primary interface.
- */
- int
-if_name( struct atif_data *aid, char *name, ulong ppa )
-{
- sprintf( aid->aid_name, "%s%ld", name, ppa );
-
- if ( interfaces == NULL ) { /* create fake loopback */
- if (( interfaces = if_alloc( NULL )) == NULL ) {
- return( ENOMEM );
- }
- strcpy( interfaces->aid_name, "lo0" );
- interfaces->aid_state = DL_IDLE;
- bzero( interfaces->aid_hwaddr, sizeof( interfaces->aid_hwaddr ));
- interfaces->aid_flags = AIDF_LOOPBACK;
- interfaces->aid_c.c_type = 0;
-
- aid->aid_next = interfaces;
- aid->aid_next->aid_prev = aid;
- interfaces = aid;
- } else {
- aid->aid_next = interfaces->aid_next;
- aid->aid_prev = interfaces;
- aid->aid_next->aid_prev = aid;
- interfaces->aid_next = aid;
- }
-
- aarp_init( aid );
- return( 0 );
-}
-
- void
-if_free( struct atif_data *aid )
-{
- if ( aid->aid_c.c_type != 0 ) {
- cmn_err( CE_NOTE, "if_free context %x\n", aid->aid_c.c_type );
- return;
- }
-
- aarp_clean( aid );
-
- if ( aid->aid_next != NULL ) {
- aid->aid_next->aid_prev = aid->aid_prev;
- }
- if ( aid->aid_prev != NULL ) {
- aid->aid_prev->aid_next = aid->aid_next;
- }
- if ( aid == interfaces ) {
- interfaces = aid->aid_next;
- }
- kmem_free( aid, sizeof( struct atif_data ));
-
- if ( interfaces != NULL && interfaces->aid_next == NULL ) {
- kmem_free( interfaces, sizeof( struct atif_data ));
- interfaces = NULL;
- }
- return;
-}
-
- int
-if_getaddr( char *name, struct sockaddr_at *sat )
-{
- struct atif_data *aid;
-
- for ( aid = interfaces; aid != NULL; aid = aid->aid_next ) {
- if ( strcmp( name, aid->aid_name ) == 0 ) {
- break;
- }
- }
- if ( aid == NULL ) {
- return( EADDRNOTAVAIL );
- }
-
- bcopy( &aid->aid_sat, sat, sizeof( struct sockaddr_at ));
- return( 0 );
-}
-
- int
-if_addmulti( queue_t *q, mblk_t *m, char *name, struct sockaddr *sa )
-{
- struct atif_data *aid;
-
- for ( aid = interfaces; aid != NULL; aid = aid->aid_next ) {
- if ( strcmp( name, aid->aid_name ) == 0 ) {
- break;
- }
- }
- if ( aid == NULL ) {
- return( EADDRNOTAVAIL );
- }
-
- if ( aid->aid_c.c_type != 0 ) {
- cmn_err( CE_NOTE, "if_addmulti context %x\n", aid->aid_c.c_type );
- return( EINVAL );
- }
-
- aid->aid_c.c_type = SIOCADDMULTI;
- aid->aid_c.c_u.u_multi.um_q = q;
- aid->aid_c.c_u.u_multi.um_m = m;
- dl_enabmulti_req( WR( aid->aid_q ), sa->sa_data );
-
- return( 0 );
-}
-
- void
-if_pickaddr( void *ptr )
-{
- struct atif_data *aid = (struct atif_data*) ptr;
-
- if ( aid->aid_c.c_type != SIOCSIFADDR ) {
- cmn_err( CE_NOTE, "if_pickaddr context %x\n", aid->aid_c.c_type );
- return;
- }
-
- if ( aid->aid_flags & AIDF_PROBEFAILED ) {
- aid->aid_flags &= ~AIDF_PROBEFAILED;
- /* choose new address */
- for (;;) {
- if ( aid->aid_c.c_u.u_addr.ua_nodecnt == 0 ) {
- /* if we've exausted all addresses, fail */
- if ( aid->aid_c.c_u.u_addr.ua_netcnt == 0 ) {
- ioc_error_ack( aid->aid_c.c_u.u_addr.ua_q,
- aid->aid_c.c_u.u_addr.ua_m, EADDRINUSE );
- aid->aid_c.c_type = 0;
- aid->aid_c.c_u.u_addr.ua_q = NULL;
- aid->aid_c.c_u.u_addr.ua_m = NULL;
- aid->aid_c.c_u.u_addr.ua_probecnt = 0;
- aid->aid_c.c_u.u_addr.ua_netcnt = 0;
- aid->aid_c.c_u.u_addr.ua_nodecnt = 0;
- } else {
- aid->aid_c.c_u.u_addr.ua_nodecnt = 256;
- aid->aid_c.c_u.u_addr.ua_netcnt--;
- if ( ntohs(aid->aid_sat.sat_addr.s_net) >
- ntohs(aid->aid_nr.nr_lastnet) ) {
- aid->aid_sat.sat_addr.s_net = aid->aid_nr.nr_firstnet;
- } else
- aid->aid_sat.sat_addr.s_net =
- htons(ntohs(aid->aid_sat.sat_addr.s_net) + 1);
- }
- } else {
- aid->aid_sat.sat_addr.s_node++;
- aid->aid_c.c_u.u_addr.ua_nodecnt--;
- if ( aid->aid_sat.sat_addr.s_node == 0 ||
- aid->aid_sat.sat_addr.s_node == 255 ||
- aid->aid_sat.sat_addr.s_node == 254 ) {
- continue;
- }
- break;
- }
- }
- }
- if ( aid->aid_c.c_u.u_addr.ua_probecnt-- <= 0 ) {
- aid->aid_flags &= ~AIDF_PROBING;
- /* worked, send ioctl reponse */
- ioc_ok_ack( aid->aid_c.c_u.u_addr.ua_q, aid->aid_c.c_u.u_addr.ua_m, 0 );
- aid->aid_c.c_type = 0;
- aid->aid_c.c_u.u_addr.ua_q = NULL;
- aid->aid_c.c_u.u_addr.ua_m = NULL;
- aid->aid_c.c_u.u_addr.ua_probecnt = 0;
- aid->aid_c.c_u.u_addr.ua_netcnt = 0;
- aid->aid_c.c_u.u_addr.ua_nodecnt = 0;
- return;
- }
-
- aarp_send( aid, AARPOP_PROBE, NULL,
- aid->aid_sat.sat_addr.s_net, aid->aid_sat.sat_addr.s_node );
- qtimeout( aid->aid_q, if_pickaddr, (caddr_t)aid, hz / 5 );
-}
-
- int
-if_setaddr( queue_t *q, mblk_t *m, char *name, struct sockaddr_at *sat )
-{
- struct atif_data *aid;
- struct netrange nr;
- ulong time;
-
- for ( aid = interfaces; aid != NULL; aid = aid->aid_next ) {
- if ( strcmp( name, aid->aid_name ) == 0 ) {
- break;
- }
- }
- if ( aid == NULL ) {
- return( EADDRNOTAVAIL );
- }
-
- if ( aid->aid_c.c_type != 0 ) {
- cmn_err( CE_NOTE, "if_setaddr context %x\n", aid->aid_c.c_type );
- return( EINVAL );
- }
-
- bcopy( sat->sat_zero, &nr, sizeof( struct netrange ));
-
- if ( aid->aid_flags & AIDF_LOOPBACK ) {
- aid->aid_sat = *sat;
- aid->aid_nr = nr;
-
- /* routes? */
-
- ioc_ok_ack( q, m, 0 );
- return( 0 );
- }
-
- drv_getparm( TIME, &time );
- if ( sat->sat_addr.s_net == ATADDR_ANYNET ) {
- if ( nr.nr_lastnet == nr.nr_firstnet ) {
- sat->sat_addr.s_net = nr.nr_firstnet;
- } else {
- sat->sat_addr.s_net = htons(ntohs(nr.nr_firstnet) + time %
- (ntohs(nr.nr_lastnet) - ntohs(nr.nr_firstnet)));
- }
- } else {
- if ( ntohs( sat->sat_addr.s_net ) < ntohs( nr.nr_firstnet ) ||
- ntohs( sat->sat_addr.s_net ) > ntohs( nr.nr_lastnet )) {
- return( EINVAL );
- }
- }
-
- if ( sat->sat_addr.s_node == ATADDR_ANYNODE ) {
- sat->sat_addr.s_node = time;
- }
-
- aid->aid_flags |= AIDF_PROBING;
- aid->aid_sat = *sat;
- aid->aid_nr = nr;
-
- aid->aid_c.c_type = SIOCSIFADDR;
- aid->aid_c.c_u.u_addr.ua_q = q;
- aid->aid_c.c_u.u_addr.ua_m = m;
- aid->aid_c.c_u.u_addr.ua_probecnt = 10;
- aid->aid_c.c_u.u_addr.ua_netcnt = ntohs(nr.nr_lastnet) -
- ntohs(nr.nr_firstnet);
- aid->aid_c.c_u.u_addr.ua_nodecnt = 256;
- qtimeout( aid->aid_q, if_pickaddr, (caddr_t)aid, 0 );
- return( 0 );
-}
-
-/*
- * These three routines are all a big mess...
- */
- struct atif_data *
-if_dest( struct atif_data *aid, struct sockaddr_at *sat )
-{
- struct atif_data *dest;
-
- for ( dest = interfaces; dest != NULL; dest = dest->aid_next ) {
- if ((( sat->sat_addr.s_net == 0 && aid == dest ) ||
- ( ntohs(sat->sat_addr.s_net) >=
- ntohs(dest->aid_nr.nr_firstnet) &&
- ntohs(sat->sat_addr.s_net) <=
- ntohs(dest->aid_nr.nr_lastnet) )) &&
- ( sat->sat_addr.s_node == dest->aid_sat.sat_addr.s_node ||
- sat->sat_addr.s_node == ATADDR_BCAST )) {
- break;
- }
- }
- if ( dest == NULL ) {
- return( NULL );
- }
- return( dest );
-}
-
- struct atif_data *
-if_withaddr( struct sockaddr_at *sat )
-{
- struct atif_data *dest;
-
- for ( dest = interfaces; dest != NULL; dest = dest->aid_next ) {
- if ( sat->sat_addr.s_net == dest->aid_sat.sat_addr.s_net &&
- sat->sat_addr.s_node == dest->aid_sat.sat_addr.s_node ) {
- break;
- }
- }
- return( dest );
-}
-
- struct atif_data *
-if_withnet( struct sockaddr_at *sat )
-{
- struct atif_data *dest;
-
- for ( dest = interfaces; dest != NULL; dest = dest->aid_next ) {
- if ( ntohs(sat->sat_addr.s_net) >= ntohs(dest->aid_nr.nr_firstnet) &&
- ntohs(sat->sat_addr.s_net) <= ntohs(dest->aid_nr.nr_lastnet)) {
- break;
- }
- }
- return( dest );
-}
-
- int
-if_route( struct atif_data *aid, mblk_t *m, struct sockaddr_at *sat )
-{
- struct sockaddr_at gate;
-
- if ( sat->sat_addr.s_net == 0 ) {
- if ( sat->sat_addr.s_node == 0 ) {
- aid = if_withaddr( sat );
- }
- if ( aid == NULL ) {
- freemsg( m );
- return( ENETUNREACH );
- }
- gate = *sat;
- } else {
- if ( rt_gate( sat, &gate ) < 0 ) { /* no route */
- gate = *sat;
- }
- if (( aid = if_withaddr( &gate )) == NULL ) {
- if (( aid = if_withnet( &gate )) == NULL ) {
- freemsg( m );
- return( ENETUNREACH );
- }
- }
- }
-
- if ( aid->aid_flags & AIDF_LOOPBACK ) {
- return( ddp_rput( aid, m ));
- } else {
- /* the aarp layer is expected to send broadcast packets appropriately */
- return( aarp_resolve( aid, m, &gate ));
- }
-}
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