+++ /dev/null
-/*
- * $Id: aarp.c,v 1.3 2002-01-03 17:49:39 sibaz Exp $
- *
- * Copyright (c) 1990,1991 Regents of The University of Michigan.
- * All Rights Reserved.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif /* HAVE_CONFIG_H */
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <syslog.h>
-#include <sys/param.h>
-#include <sys/mbuf.h>
-#include <sys/time.h>
-#ifndef _IBMR2
-#include <sys/kernel.h>
-#endif /* _IBMR2 */
-#include <net/if.h>
-#include <net/route.h>
-#include <net/af.h>
-#include <netinet/in.h>
-#undef s_net
-#include <netinet/if_ether.h>
-#ifdef _IBMR2
-#include <netinet/in_netarp.h>
-#include <net/spl.h>
-#include <sys/errno.h>
-#include <sys/err_rec.h>
-#endif /* _IBMR2 */
-
-#include "at.h"
-#include "at_var.h"
-#include "aarp.h"
-#include "ddp_var.h"
-#include "endian.h"
-#include "phase2.h"
-
-#ifdef GATEWAY
-#define AARPTAB_BSIZ 16
-#define AARPTAB_NB 37
-#else /* GATEWAY */
-#define AARPTAB_BSIZ 9
-#define AARPTAB_NB 19
-#endif /* GATEWAY */
-#define AARPTAB_SIZE (AARPTAB_BSIZ * AARPTAB_NB)
-struct aarptab aarptab[AARPTAB_SIZE];
-int aarptab_size = AARPTAB_SIZE;
-
-#define AARPTAB_HASH(a) \
- ((((a).s_net << 8 ) + (a).s_node ) % AARPTAB_NB )
-
-#define AARPTAB_LOOK(aat,addr) { \
- int n; \
- aat = &aarptab[ AARPTAB_HASH(addr) * AARPTAB_BSIZ ]; \
- for ( n = 0; n < AARPTAB_BSIZ; n++, aat++ ) \
- if ( aat->aat_ataddr.s_net == (addr).s_net && \
- aat->aat_ataddr.s_node == (addr).s_node ) \
- break; \
- if ( n >= AARPTAB_BSIZ ) \
- aat = 0; \
-}
-
-#define AARPT_AGE (60 * 1)
-#define AARPT_KILLC 20
-#define AARPT_KILLI 3
-
-#ifdef sun
-extern struct ether_addr etherbroadcastaddr;
-#else /* sun */
-extern u_char etherbroadcastaddr[6];
-#endif /* sun */
-
-u_char atmulticastaddr[ 6 ] = {
- 0x09, 0x00, 0x07, 0xff, 0xff, 0xff,
-};
-
-u_char at_org_code[ 3 ] = {
- 0x08, 0x00, 0x07,
-};
-u_char aarp_org_code[ 3 ] = {
- 0x00, 0x00, 0x00,
-};
-
-aarptimer()
-{
- struct aarptab *aat;
- int i, s;
-
- timeout( aarptimer, (caddr_t)0, AARPT_AGE * hz );
- aat = aarptab;
- for ( i = 0; i < AARPTAB_SIZE; i++, aat++ ) {
- if ( aat->aat_flags == 0 || ( aat->aat_flags & ATF_PERM ))
- continue;
- if ( ++aat->aat_timer < (( aat->aat_flags & ATF_COM ) ?
- AARPT_KILLC : AARPT_KILLI ))
- continue;
- s = splimp();
- aarptfree( aat );
- splx( s );
- }
-}
-
-struct ifaddr *
-at_ifawithnet( sat, ifa )
- struct sockaddr_at *sat;
- struct ifaddr *ifa;
-{
- struct at_ifaddr *aa;
-
- for (; ifa; ifa = ifa->ifa_next ) {
-#ifdef BSD4_4
- if ( ifa->ifa_addr->sa_family != AF_APPLETALK ) {
- continue;
- }
- if ( satosat( ifa->ifa_addr )->sat_addr.s_net ==
- sat->sat_addr.s_net ) {
- break;
- }
-#else /* BSD4_4 */
- if ( ifa->ifa_addr.sa_family != AF_APPLETALK ) {
- continue;
- }
- aa = (struct at_ifaddr *)ifa;
- if ( ntohs( sat->sat_addr.s_net ) >= ntohs( aa->aa_firstnet ) &&
- ntohs( sat->sat_addr.s_net ) <= ntohs( aa->aa_lastnet )) {
- break;
- }
-#endif /* BSD4_4 */
- }
- return( ifa );
-}
-
-aarpwhohas( ac, sat )
- struct arpcom *ac;
- struct sockaddr_at *sat;
-{
- struct mbuf *m;
- struct ether_header *eh;
- struct ether_aarp *ea;
- struct at_ifaddr *aa;
- struct llc *llc;
- struct sockaddr sa;
-
-#ifdef BSD4_4
- if (( m = m_gethdr( M_DONTWAIT, MT_DATA )) == NULL ) {
- return;
- }
- m->m_len = sizeof( *ea );
- m->m_pkthdr.len = sizeof( *ea );
- MH_ALIGN( m, sizeof( *ea ));
-#else /* BSD4_4 */
- if (( m = m_get( M_DONTWAIT, MT_DATA )) == NULL ) {
- return;
- }
- m->m_len = sizeof( *ea );
- m->m_off = MMAXOFF - sizeof( *ea );
-#endif /* BSD4_4 */
-
- ea = mtod( m, struct ether_aarp *);
- bzero((caddr_t)ea, sizeof( *ea ));
-
- ea->aarp_hrd = htons( AARPHRD_ETHER );
- ea->aarp_pro = htons( ETHERTYPE_AT );
- ea->aarp_hln = sizeof( ea->aarp_sha );
- ea->aarp_pln = sizeof( ea->aarp_spu );
- ea->aarp_op = htons( AARPOP_REQUEST );
-#ifdef sun
- bcopy((caddr_t)&ac->ac_enaddr, (caddr_t)ea->aarp_sha,
- sizeof( ea->aarp_sha ));
-#else /* sun */
- bcopy((caddr_t)ac->ac_enaddr, (caddr_t)ea->aarp_sha,
- sizeof( ea->aarp_sha ));
-#endif /* sun */
-
- /*
- * We need to check whether the output ethernet type should
- * be phase 1 or 2. We have the interface that we'll be sending
- * the aarp out. We need to find an AppleTalk network on that
- * interface with the same address as we're looking for. If the
- * net is phase 2, generate an 802.2 and SNAP header.
- */
- if (( aa = (struct at_ifaddr *)at_ifawithnet( sat, ac->ac_if.if_addrlist ))
- == NULL ) {
- m_freem( m );
- return;
- }
-
- eh = (struct ether_header *)sa.sa_data;
-
- if ( aa->aa_flags & AFA_PHASE2 ) {
-#ifdef sun
- bcopy((caddr_t)atmulticastaddr, (caddr_t)&eh->ether_dhost,
- sizeof( eh->ether_dhost ));
-#else /* sun */
- bcopy((caddr_t)atmulticastaddr, (caddr_t)eh->ether_dhost,
- sizeof( eh->ether_dhost ));
-#endif /* sun */
-#if defined( sun ) && defined( i386 )
- eh->ether_type = htons( sizeof( struct llc ) +
- sizeof( struct ether_aarp ));
-#else /* sun && i386 */
- eh->ether_type = sizeof( struct llc ) + sizeof( struct ether_aarp );
-#endif /* sun && i386 */
-#ifdef BSD4_4
- M_PREPEND( m, sizeof( struct llc ), M_WAIT );
-#else /* BSD4_4 */
- m->m_len += sizeof( struct llc );
- m->m_off -= sizeof( struct llc );
-#endif /* BSD4_4 */
- llc = mtod( m, struct llc *);
- llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP;
- llc->llc_control = LLC_UI;
- bcopy( aarp_org_code, llc->llc_org_code, sizeof( aarp_org_code ));
- llc->llc_ether_type = htons( ETHERTYPE_AARP );
-
-
- bcopy( &AA_SAT( aa )->sat_addr.s_net, ea->aarp_spnet,
- sizeof( ea->aarp_spnet ));
- ea->aarp_spnode = AA_SAT( aa )->sat_addr.s_node;
- bcopy( &sat->sat_addr.s_net, ea->aarp_tpnet,
- sizeof( ea->aarp_tpnet ));
- ea->aarp_tpnode = sat->sat_addr.s_node;
- } else {
-#ifdef sun
- bcopy((caddr_t)ðerbroadcastaddr, (caddr_t)&eh->ether_dhost,
- sizeof( eh->ether_dhost ));
-#else /* sun */
- bcopy((caddr_t)etherbroadcastaddr, (caddr_t)eh->ether_dhost,
- sizeof( eh->ether_dhost ));
-#endif /* sun */
-#if defined( sun ) && defined( i386 )
- eh->ether_type = htons( ETHERTYPE_AARP );
-#else /* sun && i386 */
- eh->ether_type = ETHERTYPE_AARP;
-#endif /* sun && i386 */
-
- ea->aarp_spa = AA_SAT( aa )->sat_addr.s_node;
- ea->aarp_tpa = sat->sat_addr.s_node;
- }
-
-#ifdef BSD4_4
- sa.sa_len = sizeof( struct sockaddr );
-#endif /* BSD4_4 */
- sa.sa_family = AF_UNSPEC;
- (*ac->ac_if.if_output)(&ac->ac_if, m, &sa );
-}
-
-aarpresolve( ac, m, destsat, desten )
- struct arpcom *ac;
- struct mbuf *m;
- struct sockaddr_at *destsat;
-#ifdef sun
- struct ether_addr *desten;
-#else /* sun */
- u_char *desten;
-#endif /* sun */
-{
- struct at_ifaddr *aa;
- struct ifaddr ifa;
- struct aarptab *aat;
- int s;
-
- if ( at_broadcast( destsat )) {
- if (( aa = (struct at_ifaddr *)at_ifawithnet( destsat,
- ((struct ifnet *)ac)->if_addrlist )) == NULL ) {
- m_freem( m );
- return( 0 );
- }
- if ( aa->aa_flags & AFA_PHASE2 ) {
- bcopy( (caddr_t)atmulticastaddr, (caddr_t)desten,
- sizeof( atmulticastaddr ));
- } else {
-#ifdef sun
- bcopy( (caddr_t)ðerbroadcastaddr, (caddr_t)desten,
- sizeof( etherbroadcastaddr ));
-#else /* sun */
- bcopy( (caddr_t)etherbroadcastaddr, (caddr_t)desten,
- sizeof( etherbroadcastaddr ));
-#endif /* sun */
- }
- return( 1 );
- }
-
- s = splimp();
- AARPTAB_LOOK( aat, destsat->sat_addr );
- if ( aat == 0 ) { /* No entry */
- aat = aarptnew( &destsat->sat_addr );
- if ( aat == 0 ) {
- panic( "aarpresolve: no free entry" );
- }
- aat->aat_hold = m;
- aarpwhohas( ac, destsat );
- splx( s );
- return( 0 );
- }
- /* found an entry */
- aat->aat_timer = 0;
- if ( aat->aat_flags & ATF_COM ) { /* entry is COMplete */
- bcopy( (caddr_t)aat->aat_enaddr, (caddr_t)desten,
- sizeof( aat->aat_enaddr ));
- splx( s );
- return( 1 );
- }
- /* entry has not completed */
- if ( aat->aat_hold ) {
- m_freem( aat->aat_hold );
- }
- aat->aat_hold = m;
- aarpwhohas( ac, destsat );
- splx( s );
- return( 0 );
-}
-
-aarpinput( ac, m )
- struct arpcom *ac;
- struct mbuf *m;
-{
- struct arphdr *ar;
-
- if ( ac->ac_if.if_flags & IFF_NOARP )
- goto out;
-
-#ifndef BSD4_4
- IF_ADJ( m );
-#endif /* BSD4_4 */
-
- if ( m->m_len < sizeof( struct arphdr )) {
- goto out;
- }
-
- ar = mtod( m, struct arphdr *);
- if ( ntohs( ar->ar_hrd ) != AARPHRD_ETHER ) {
- goto out;
- }
-
- if ( m->m_len < sizeof( struct arphdr ) + 2 * ar->ar_hln +
- 2 * ar->ar_pln ) {
- goto out;
- }
-
- switch( ntohs( ar->ar_pro )) {
- case ETHERTYPE_AT :
- at_aarpinput( ac, m );
- return;
-
- default:
- break;
- }
-
-out:
- m_freem( m );
-}
-
-
-at_aarpinput( ac, m )
- struct arpcom *ac;
- struct mbuf *m;
-{
- struct mbuf *m0;
- struct ether_aarp *ea;
- struct at_ifaddr *aa;
- struct aarptab *aat;
- struct ether_header *eh;
- struct llc *llc;
- struct sockaddr_at sat;
- struct sockaddr sa;
- struct at_addr spa, tpa, ma;
- int op, s;
- u_short net;
-
- ea = mtod( m, struct ether_aarp *);
-
- /* Check to see if from my hardware address */
-#ifdef sun
- if ( !bcmp(( caddr_t )ea->aarp_sha, ( caddr_t )&ac->ac_enaddr,
- sizeof( ac->ac_enaddr ))) {
- m_freem( m );
- return;
- }
-#else /* sun */
- if ( !bcmp(( caddr_t )ea->aarp_sha, ( caddr_t )ac->ac_enaddr,
- sizeof( ac->ac_enaddr ))) {
- m_freem( m );
- return;
- }
-#endif /* sun */
-
- /*
- * Check if from broadcast address. This could be a more robust
- * check, since we could look for multicasts.
- */
-#ifdef sun
- if ( !bcmp(( caddr_t )ea->aarp_sha, ( caddr_t )ðerbroadcastaddr,
- sizeof( etherbroadcastaddr ))) {
- log( LOG_ERR, "aarp: source is broadcast!\n" );
- m_freem( m );
- return;
- }
-#else /* sun */
- if ( !bcmp(( caddr_t )ea->aarp_sha, ( caddr_t )etherbroadcastaddr,
- sizeof( etherbroadcastaddr ))) {
-#ifndef _IBMR2
-#ifdef ultrix
- mprintf( LOG_ERR,
-#else /* ultrix */
- log( LOG_ERR,
-#endif /* ultrix */
- "aarp: source is broadcast!\n" );
-#endif /* ! _IBMR2 */
- m_freem( m );
- return;
- }
-#endif /* sun */
-
- op = ntohs( ea->aarp_op );
- bcopy( ea->aarp_tpnet, &net, sizeof( net ));
-
- if ( net != 0 ) {
- sat.sat_family = AF_APPLETALK;
- sat.sat_addr.s_net = net;
- if (( aa = (struct at_ifaddr *)at_ifawithnet( &sat,
- ac->ac_if.if_addrlist )) == NULL ) {
- m_freem( m );
- return;
- }
- bcopy( ea->aarp_spnet, &spa.s_net, sizeof( spa.s_net ));
- bcopy( ea->aarp_tpnet, &tpa.s_net, sizeof( tpa.s_net ));
- } else {
- /*
- * Since we don't know the net, we just look for the first
- * phase 1 address on the interface.
- */
- for ( aa = (struct at_ifaddr *)ac->ac_if.if_addrlist; aa;
- aa = (struct at_ifaddr *)aa->aa_ifa.ifa_next ) {
- if ( AA_SAT( aa )->sat_family == AF_APPLETALK &&
- ( aa->aa_flags & AFA_PHASE2 ) == 0 ) {
- break;
- }
- }
- if ( aa == NULL ) {
- m_freem( m );
- return;
- }
- tpa.s_net = spa.s_net = AA_SAT( aa )->sat_addr.s_net;
- }
-
- spa.s_node = ea->aarp_spnode;
- tpa.s_node = ea->aarp_tpnode;
- ma.s_net = AA_SAT( aa )->sat_addr.s_net;
- ma.s_node = AA_SAT( aa )->sat_addr.s_node;
-
- /*
- * This looks like it's from us.
- */
- if ( spa.s_net == ma.s_net && spa.s_node == ma.s_node ) {
- if ( aa->aa_flags & AFA_PROBING ) {
- /*
- * We're probing, someone either responded to our probe, or
- * probed for the same address we'd like to use. Change the
- * address we're probing for.
- */
- untimeout( aarpprobe, ac );
- wakeup( aa );
- m_freem( m );
- return;
- } else if ( op != AARPOP_PROBE ) {
- /*
- * This is not a probe, and we're not probing. This means
- * that someone's saying they have the same source address
- * as the one we're using. Get upset...
- */
-#ifndef _IBMR2
-#ifdef ultrix
- mprintf( LOG_ERR,
-#else /* ultrix */
- log( LOG_ERR,
-#endif /* ultrix */
- "aarp: duplicate AT address!! %x:%x:%x:%x:%x:%x\n",
- ea->aarp_sha[ 0 ], ea->aarp_sha[ 1 ], ea->aarp_sha[ 2 ],
- ea->aarp_sha[ 3 ], ea->aarp_sha[ 4 ], ea->aarp_sha[ 5 ]);
-#endif /* ! _IBMR2 */
- m_freem( m );
- return;
- }
- }
-
- AARPTAB_LOOK( aat, spa );
- if ( aat ) {
- if ( op == AARPOP_PROBE ) {
- /*
- * Someone's probing for spa, dealocate the one we've got,
- * so that if the prober keeps the address, we'll be able
- * to arp for him.
- */
- aarptfree( aat );
- m_freem( m );
- return;
- }
-
- bcopy(( caddr_t )ea->aarp_sha, ( caddr_t )aat->aat_enaddr,
- sizeof( ea->aarp_sha ));
- aat->aat_flags |= ATF_COM;
- if ( aat->aat_hold ) {
-#ifdef _IBMR2
- /*
- * Like in ddp_output(), we can't rely on the if_output
- * routine to resolve AF_APPLETALK addresses, on the rs6k.
- * So, we fill the destination ethernet address here.
- *
- * This should really be replaced with something like
- * rsif_output(). XXX Will have to be for phase 2.
- */
- /* XXX maybe fill in the rest of the frame header */
- sat.sat_family = AF_UNSPEC;
- bcopy( aat->aat_enaddr, (*(struct sockaddr *)&sat).sa_data,
- sizeof( aat->aat_enaddr ));
-#else /* _IBMR2 */
- sat.sat_family = AF_APPLETALK;
- sat.sat_addr = spa;
-#endif /* _IBMR2 */
- (*ac->ac_if.if_output)( &ac->ac_if, aat->aat_hold,
- (struct sockaddr *)&sat );
- aat->aat_hold = 0;
- }
- }
-
- if ( aat == 0 && tpa.s_net == ma.s_net && tpa.s_node == ma.s_node
- && op != AARPOP_PROBE ) {
- if ( aat = aarptnew( &spa )) {
- bcopy(( caddr_t )ea->aarp_sha, ( caddr_t )aat->aat_enaddr,
- sizeof( ea->aarp_sha ));
- aat->aat_flags |= ATF_COM;
- }
- }
-
- /*
- * Don't respond to responses, and never respond if we're
- * still probing.
- */
- if ( tpa.s_net != ma.s_net || tpa.s_node != ma.s_node ||
- op == AARPOP_RESPONSE || ( aa->aa_flags & AFA_PROBING )) {
- m_freem( m );
- return;
- }
-
- bcopy(( caddr_t )ea->aarp_sha, ( caddr_t )ea->aarp_tha,
- sizeof( ea->aarp_sha ));
-#ifdef sun
- bcopy(( caddr_t )&ac->ac_enaddr, ( caddr_t )ea->aarp_sha,
- sizeof( ea->aarp_sha ));
-#else /* sun */
- bcopy(( caddr_t )ac->ac_enaddr, ( caddr_t )ea->aarp_sha,
- sizeof( ea->aarp_sha ));
-#endif /* sun */
-
- eh = (struct ether_header *)sa.sa_data;
-#ifdef sun
- bcopy(( caddr_t )ea->aarp_tha, ( caddr_t )&eh->ether_dhost,
- sizeof( eh->ether_dhost ));
-#else /* sun */
- bcopy(( caddr_t )ea->aarp_tha, ( caddr_t )eh->ether_dhost,
- sizeof( eh->ether_dhost ));
-#endif /* sun */
-
- if ( aa->aa_flags & AFA_PHASE2 ) {
-#if defined( sun ) && defined( i386 )
- eh->ether_type = htons( sizeof( struct llc ) +
- sizeof( struct ether_aarp ));
-#else /* sun && i386 */
- eh->ether_type = sizeof( struct llc ) + sizeof( struct ether_aarp );
-#endif /* sun && i386 */
-#ifdef BSD4_4
- M_PREPEND( m, sizeof( struct llc ), M_DONTWAIT );
- if ( m == NULL ) {
- m_freem( m );
- return;
- }
-#else /* BSD4_4 */
- MGET( m0, M_DONTWAIT, MT_HEADER );
- if ( m0 == NULL ) {
- m_freem( m );
- return;
- }
- m0->m_next = m;
- m = m0;
- m->m_off = MMAXOFF - sizeof( struct llc );
- m->m_len = sizeof ( struct llc );
-#endif /* BSD4_4 */
- llc = mtod( m, struct llc *);
- llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP;
- llc->llc_control = LLC_UI;
- bcopy( aarp_org_code, llc->llc_org_code, sizeof( aarp_org_code ));
- llc->llc_ether_type = htons( ETHERTYPE_AARP );
-
- bcopy( ea->aarp_spnet, ea->aarp_tpnet, sizeof( ea->aarp_tpnet ));
- bcopy( &ma.s_net, ea->aarp_spnet, sizeof( ea->aarp_spnet ));
- } else {
-#if defined( sun ) && defined( i386 )
- eh->ether_type = htons( ETHERTYPE_AARP );
-#else /* sun && i386 */
- eh->ether_type = ETHERTYPE_AARP;
-#endif /* sun && i386 */
- }
-
- ea->aarp_tpnode = ea->aarp_spnode;
- ea->aarp_spnode = ma.s_node;
- ea->aarp_op = htons( AARPOP_RESPONSE );
-
-#ifdef BSD4_4
- sa.sa_len = sizeof( struct sockaddr );
-#endif /* BSD4_4 */
- sa.sa_family = AF_UNSPEC;
- (*ac->ac_if.if_output)( &ac->ac_if, m, &sa );
- return;
-}
-
-aarptfree( aat )
- struct aarptab *aat;
-{
-
- if ( aat->aat_hold )
- m_freem( aat->aat_hold );
- aat->aat_hold = 0;
- aat->aat_timer = aat->aat_flags = 0;
- aat->aat_ataddr.s_net = 0;
- aat->aat_ataddr.s_node = 0;
-}
-
- struct aarptab *
-aarptnew( addr )
- struct at_addr *addr;
-{
- int n;
- int oldest = -1;
- struct aarptab *aat, *aato = NULL;
- static int first = 1;
-
- if ( first ) {
- first = 0;
- timeout( aarptimer, (caddr_t)0, hz );
- }
- aat = &aarptab[ AARPTAB_HASH( *addr ) * AARPTAB_BSIZ ];
- for ( n = 0; n < AARPTAB_BSIZ; n++, aat++ ) {
- if ( aat->aat_flags == 0 )
- goto out;
- if ( aat->aat_flags & ATF_PERM )
- continue;
- if ((int) aat->aat_timer > oldest ) {
- oldest = aat->aat_timer;
- aato = aat;
- }
- }
- if ( aato == NULL )
- return( NULL );
- aat = aato;
- aarptfree( aat );
-out:
- aat->aat_ataddr = *addr;
- aat->aat_flags = ATF_INUSE;
- return( aat );
-}
-
-aarpprobe( ac )
- struct arpcom *ac;
-{
- struct mbuf *m;
- struct ether_header *eh;
- struct ether_aarp *ea;
- struct at_ifaddr *aa;
- struct llc *llc;
- struct sockaddr sa;
-
- /*
- * We need to check whether the output ethernet type should
- * be phase 1 or 2. We have the interface that we'll be sending
- * the aarp out. We need to find an AppleTalk network on that
- * interface with the same address as we're looking for. If the
- * net is phase 2, generate an 802.2 and SNAP header.
- */
- for ( aa = (struct at_ifaddr *)ac->ac_if.if_addrlist; aa;
- aa = (struct at_ifaddr *)aa->aa_ifa.ifa_next ) {
- if ( AA_SAT( aa )->sat_family == AF_APPLETALK &&
- ( aa->aa_flags & AFA_PROBING )) {
- break;
- }
- }
- if ( aa == NULL ) { /* serious error XXX */
- printf( "aarpprobe why did this happen?!\n" );
- return;
- }
-
- if ( aa->aa_probcnt <= 0 ) {
- aa->aa_flags &= ~AFA_PROBING;
- wakeup( aa );
- return;
- } else {
- timeout( aarpprobe, (caddr_t)ac, hz / 5 );
- }
-
-#ifdef BSD4_4
- if (( m = m_gethdr( M_DONTWAIT, MT_DATA )) == NULL ) {
- return;
- }
- m->m_len = sizeof( *ea );
- m->m_pkthdr.len = sizeof( *ea );
- MH_ALIGN( m, sizeof( *ea ));
-#else /* BSD4_4 */
- if (( m = m_get( M_DONTWAIT, MT_DATA )) == NULL ) {
- return;
- }
- m->m_len = sizeof( *ea );
- m->m_off = MMAXOFF - sizeof( *ea );
-#endif /* BSD4_4 */
-
- ea = mtod( m, struct ether_aarp *);
- bzero((caddr_t)ea, sizeof( *ea ));
-
- ea->aarp_hrd = htons( AARPHRD_ETHER );
- ea->aarp_pro = htons( ETHERTYPE_AT );
- ea->aarp_hln = sizeof( ea->aarp_sha );
- ea->aarp_pln = sizeof( ea->aarp_spu );
- ea->aarp_op = htons( AARPOP_PROBE );
-#ifdef sun
- bcopy((caddr_t)&ac->ac_enaddr, (caddr_t)ea->aarp_sha,
- sizeof( ea->aarp_sha ));
-#else /* sun */
- bcopy((caddr_t)ac->ac_enaddr, (caddr_t)ea->aarp_sha,
- sizeof( ea->aarp_sha ));
-#endif /* sun */
-
- eh = (struct ether_header *)sa.sa_data;
-
- if ( aa->aa_flags & AFA_PHASE2 ) {
-#ifdef sun
- bcopy((caddr_t)atmulticastaddr, (caddr_t)&eh->ether_dhost,
- sizeof( eh->ether_dhost ));
-#else /* sun */
- bcopy((caddr_t)atmulticastaddr, (caddr_t)eh->ether_dhost,
- sizeof( eh->ether_dhost ));
-#endif /* sun */
-#if defined( sun ) && defined( i386 )
- eh->ether_type = htons( sizeof( struct llc ) +
- sizeof( struct ether_aarp ));
-#else /* sun && i386 */
- eh->ether_type = sizeof( struct llc ) + sizeof( struct ether_aarp );
-#endif /* sun && i386 */
-#ifdef BSD4_4
- M_PREPEND( m, sizeof( struct llc ), M_WAIT );
-#else /* BSD4_4 */
- m->m_len += sizeof( struct llc );
- m->m_off -= sizeof( struct llc );
-#endif /* BSD4_4 */
- llc = mtod( m, struct llc *);
- llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP;
- llc->llc_control = LLC_UI;
- bcopy( aarp_org_code, llc->llc_org_code, sizeof( aarp_org_code ));
- llc->llc_ether_type = htons( ETHERTYPE_AARP );
-
- bcopy( &AA_SAT( aa )->sat_addr.s_net, ea->aarp_spnet,
- sizeof( ea->aarp_spnet ));
- bcopy( &AA_SAT( aa )->sat_addr.s_net, ea->aarp_tpnet,
- sizeof( ea->aarp_tpnet ));
- ea->aarp_spnode = ea->aarp_tpnode = AA_SAT( aa )->sat_addr.s_node;
- } else {
-#ifdef sun
- bcopy((caddr_t)ðerbroadcastaddr, (caddr_t)&eh->ether_dhost,
- sizeof( eh->ether_dhost ));
-#else /* sun */
- bcopy((caddr_t)etherbroadcastaddr, (caddr_t)eh->ether_dhost,
- sizeof( eh->ether_dhost ));
-#endif /* sun */
-#if defined( sun ) && defined( i386 )
- eh->ether_type = htons( ETHERTYPE_AARP );
-#else /* sun && i386 */
- eh->ether_type = ETHERTYPE_AARP;
-#endif /* sun && i386 */
- ea->aarp_spa = ea->aarp_tpa = AA_SAT( aa )->sat_addr.s_node;
- }
-
-#ifdef BSD4_4
- sa.sa_len = sizeof( struct sockaddr );
-#endif /* BSD4_4 */
- sa.sa_family = AF_UNSPEC;
- (*ac->ac_if.if_output)(&ac->ac_if, m, &sa );
- aa->aa_probcnt--;
-}
-
-aarp_clean()
-{
- struct aarptab *aat;
- int i;
-
- untimeout( aarptimer, 0 );
- for ( i = 0, aat = aarptab; i < AARPTAB_SIZE; i++, aat++ ) {
- if ( aat->aat_hold ) {
- m_freem( aat->aat_hold );
- }
- }
-}
projects / netatalk.git / blobdiff