+++ /dev/null
-/*
- * Copyright (c) 1990,1991 Regents of The University of Michigan.
- * All Rights Reserved.
- *
- * Permission to use, copy, modify, and distribute this software and
- * its documentation for any purpose and without fee is hereby granted,
- * provided that the above copyright notice appears in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation, and that the name of The University
- * of Michigan not be used in advertising or publicity pertaining to
- * distribution of the software without specific, written prior
- * permission. This software is supplied as is without expressed or
- * implied warranties of any kind.
- *
- * Research Systems Unix Group
- * The University of Michigan
- * c/o Mike Clark
- * 535 W. William Street
- * Ann Arbor, Michigan
- * +1-313-763-0525
- * netatalk@itd.umich.edu
- */
-
-#include <sys/types.h>
-#include <sys/mbuf.h>
-#include <sys/socket.h>
-#include <sys/protosw.h>
-#include <sys/ioctl.h>
-#include <sys/errno.h>
-#include <net/if.h>
-#include <net/if_llc.h>
-#include <net/if_to_proto.h>
-#include <net/netisr.h>
-#include <netinet/in.h>
-#undef s_net
-#include <netinet/if_ether.h>
-
-#include "at.h"
-#include "at_var.h"
-
-extern u_char at_org_code[ 3 ];
-extern u_char aarp_org_code[ 3 ];
-
-/*
- * This is the magic input routine, for all AppleTalk related packets.
- * It will pick up *all* packets received, on all interfaces, apparently.
- * If it turns out that receiving all packets in this fashion causes
- * DLI to not receive packets what it should, we may need to call DLI
- * directly from within the AppleTalk input routines. Ick.
- */
-struct mbuf *
-ddp_ifinput( m, ifp, inq, eh )
- struct mbuf *m;
- struct ifnet *ifp;
- struct ifqueue **inq;
- struct ether_header *eh;
-{
- struct llc llc;
- struct if_family *ifam;
-
- switch ( eh->ether_type ) {
- case ETHERTYPE_AT :
- *inq = &atintrq1;
- smp_lock( &(*inq)->lk_ifqueue, LK_RETRY );
- schednetisr( NETISR_AT );
- return( m );
-
- case ETHERTYPE_AARP :
- aarpinput( ifp, m );
- return( 0 );
-
- default :
- if ( eh->ether_type <= ETHERMTU ) { /* ieee802 */
- if ( m->m_len < sizeof( struct llc )) {
- break;
- }
-
- bcopy( mtod( m, caddr_t ), &llc, sizeof( struct llc ));
- if ( llc.llc_dsap != LLC_SNAP_LSAP ||
- llc.llc_ssap != LLC_SNAP_LSAP ||
- llc.llc_control != LLC_UI ) {
- break;
- }
-
- if ( bcmp( llc.llc_org_code, at_org_code,
- sizeof( at_org_code )) == 0 &&
- ntohs( llc.llc_ether_type ) == ETHERTYPE_AT ) {
- m_adj( m, sizeof( struct llc ));
- *inq = &atintrq2;
- smp_lock( &(*inq)->lk_ifqueue, LK_RETRY );
- schednetisr( NETISR_AT );
- return( m );
- }
-
- if ( bcmp( llc.llc_org_code, aarp_org_code,
- sizeof( aarp_org_code )) == 0 &&
- ntohs( llc.llc_ether_type ) == ETHERTYPE_AARP ) {
- m_adj( m, sizeof( struct llc ));
- aarpinput( ifp, m );
- return( 0 );
- }
- }
- }
-
- /*
- * Check is anyone else wants this packet.
- */
- for ( ifam = if_family; ifam->domain != -1; ifam++ ) {
- if (( eh->ether_type == ifam->if_type || ifam->if_type == -1 ) &&
- ifam->prswitch &&
- ifam->prswitch->pr_ifinput != (int (*)())ddp_ifinput ) {
- break;
- }
- }
- if ( ifam->domain != -1 && ifam->prswitch->pr_ifinput ) {
- return( (struct mbuf *)(*ifam->prswitch->pr_ifinput)( m, ifp,
- inq, eh ));
- }
-
- m_freem( m );
- return( 0 );
-}
-
-/*
- * Fill in type and odst. odst is the media output address, i.e.
- * the MAC layer address. Type is the MAC type. Should be 0 to
- * indicate IEEE addressing.
- *
- * Stupidly enough, there's no way to say "can't send this now."
- * So, we just let the first packet go into the air. Not much
- * else to be done, except maybe bitch at DEC. Note: we're not
- * passing the mbuf to aarpresolve() -- that way it doesn't get
- * mfree-ed twice.
- */
-ddp_ifoutput( ifp, m, dst, type, odst )
- struct ifnet *ifp;
- struct mbuf *m;
- struct sockaddr_at *dst;
- short *type;
- char *odst;
-{
- struct at_ifaddr *aa;
- struct llc *llc;
- struct mbuf *m0;
-
- if ( !aarpresolve( ifp, 0, dst, odst )) {
- *type = 0xffff;
- return( 0 );
- }
-
- if (( aa = (struct at_ifaddr *)at_ifawithnet( dst, ifp->if_addrlist ))
- == 0 ) {
- *type = 0xffff;
- return( 0 );
- }
-
- if ( aa->aa_flags & AFA_PHASE2 ) {
- /*
- * This code needs to be modeled after the similar code in
- * at_sun.c -- you can't just MGET() and bcopy(), since we might be
- * dealing with mbufs which are really pages.
- */
- MGET( m0, M_WAIT, MT_HEADER );
- if ( m0 == 0 ) {
- *type = 0xffff;
- return( 0 );
- }
- m0->m_next = m->m_next;
- m0->m_off = m->m_off;
- m0->m_len = m->m_len;
- bcopy( mtod( m, caddr_t ), mtod( m0, caddr_t ), m->m_len );
- m->m_next = m0;
- m->m_off = MMINOFF;
- m->m_len = sizeof( struct llc );
-
- llc = mtod( m, struct llc *);
- llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP;
- llc->llc_control = LLC_UI;
- bcopy( at_org_code, llc->llc_org_code, sizeof( at_org_code ));
- llc->llc_ether_type = htons( ETHERTYPE_AT );
-
- /*
- * Set the type to be the length of the packet, instead of 0.
- * Ultrix used to put the length in the packet when we set type
- * to 0, however, now we do it ourselves.
- */
- for ( *type = 0; m; m = m->m_next ) {
- *type += m->m_len;
- }
- } else {
- *type = ETHERTYPE_AT;
- }
-
- return( 1 );
-}
-
-ddp_ifioctl( ifp, cmd, data )
- struct ifnet *ifp;
- int cmd;
- caddr_t data;
-{
- switch( cmd ) {
- case SIOCSIFADDR :
- aarpwhohas((struct arpcom *)ifp,
- &AA_SAT((struct ifaddr *)data)->sat_addr );
- break;
- default :
- return( EINVAL );
- }
- return( 0 );
-}
projects / netatalk.git / blobdiff