733 lines
19 KiB
C
733 lines
19 KiB
C
/*
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* Copyright (c) 1995, 1996
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* Matt Thomas <matt@3am-software.com>. All rights reserved.
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* Copyright (c) 1982, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: if_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp
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* $Id: if_fddisubr.c,v 1.29 1998/05/20 14:08:43 dufault Exp $
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*/
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#include "opt_atalk.h"
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#include "opt_inet.h"
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#include "opt_ipx.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/netisr.h>
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#include <net/route.h>
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#include <net/if_llc.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netinet/if_ether.h>
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#endif
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#if defined(__FreeBSD__)
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#include <netinet/if_fddi.h>
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#else
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#include <net/if_fddi.h>
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#endif
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#ifdef IPX
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#include <netipx/ipx.h>
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#include <netipx/ipx_if.h>
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#endif
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#ifdef NS
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#include <netns/ns.h>
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#include <netns/ns_if.h>
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#endif
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#ifdef DECNET
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#include <netdnet/dn.h>
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#endif
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#ifdef ISO
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#include <netiso/argo_debug.h>
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#include <netiso/iso.h>
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#include <netiso/iso_var.h>
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#include <netiso/iso_snpac.h>
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#endif
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#ifdef LLC
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#include <netccitt/dll.h>
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#include <netccitt/llc_var.h>
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#endif
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#ifdef NETATALK
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#include <netatalk/at.h>
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#include <netatalk/at_var.h>
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#include <netatalk/at_extern.h>
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#define llc_snap_org_code llc_un.type_snap.org_code
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#define llc_snap_ether_type llc_un.type_snap.ether_type
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extern u_char at_org_code[ 3 ];
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extern u_char aarp_org_code[ 3 ];
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#endif /* NETATALK */
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#if defined(LLC) && defined(CCITT)
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extern struct ifqueue pkintrq;
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#endif
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#include "bpfilter.h"
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#define senderr(e) { error = (e); goto bad;}
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/*
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* This really should be defined in if_llc.h but in case it isn't.
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*/
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#ifndef llc_snap
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#define llc_snap llc_un.type_snap
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#endif
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#if defined(__bsdi__) || defined(__NetBSD__)
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#define RTALLOC1(a, b) rtalloc1(a, b)
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#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e)
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#elif defined(__FreeBSD__)
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#define RTALLOC1(a, b) rtalloc1(a, b, 0UL)
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#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e, f)
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#endif
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/*
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* FDDI output routine.
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* Encapsulate a packet of type family for the local net.
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* Use trailer local net encapsulation if enough data in first
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* packet leaves a multiple of 512 bytes of data in remainder.
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* Assumes that ifp is actually pointer to arpcom structure.
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*/
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int
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fddi_output(ifp, m0, dst, rt0)
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register struct ifnet *ifp;
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struct mbuf *m0;
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struct sockaddr *dst;
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struct rtentry *rt0;
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{
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u_int16_t type;
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int s, error = 0;
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u_char edst[6];
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register struct mbuf *m = m0;
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register struct rtentry *rt;
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register struct fddi_header *fh;
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struct mbuf *mcopy = (struct mbuf *)0;
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struct arpcom *ac = (struct arpcom *)ifp;
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if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
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senderr(ENETDOWN);
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getmicrotime(&ifp->if_lastchange);
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#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
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if (rt = rt0) {
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if ((rt->rt_flags & RTF_UP) == 0) {
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if (rt0 = rt = RTALLOC1(dst, 1))
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rt->rt_refcnt--;
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else
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senderr(EHOSTUNREACH);
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}
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if (rt->rt_flags & RTF_GATEWAY) {
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if (rt->rt_gwroute == 0)
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goto lookup;
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if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
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rtfree(rt); rt = rt0;
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lookup: rt->rt_gwroute = RTALLOC1(rt->rt_gateway, 1);
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if ((rt = rt->rt_gwroute) == 0)
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senderr(EHOSTUNREACH);
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}
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}
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if (rt->rt_flags & RTF_REJECT)
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if (rt->rt_rmx.rmx_expire == 0 ||
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time_second < rt->rt_rmx.rmx_expire)
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senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
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}
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#endif
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switch (dst->sa_family) {
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#ifdef INET
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case AF_INET: {
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#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
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if (!ARPRESOLVE(ac, rt, m, dst, edst, rt0))
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return (0); /* if not yet resolved */
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#else
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int usetrailers;
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if (!arpresolve(ac, m, &((struct sockaddr_in *)dst)->sin_addr, edst, &usetrailers))
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return (0); /* if not yet resolved */
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#endif
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/* If broadcasting on a simplex interface, loopback a copy */
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if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
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mcopy = m_copy(m, 0, (int)M_COPYALL);
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type = htons(ETHERTYPE_IP);
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break;
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}
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#endif
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#ifdef IPX
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case AF_IPX:
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{
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struct ifaddr *ia;
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type = htons(ETHERTYPE_IPX);
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bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
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(caddr_t)edst, sizeof (edst));
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for(ia = ifp->if_addrhead.tqh_first; ia != 0;
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ia = ia->ifa_link.tqe_next) {
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if(ia->ifa_addr->sa_family == AF_IPX &&
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!bcmp((caddr_t)edst,
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(caddr_t)&((struct ipx_ifaddr *)ia)->ia_addr.sipx_addr.x_host,
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sizeof(edst)) )
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return (looutput(ifp, m, dst, rt));
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}
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/* If broadcasting on a simplex interface, loopback a copy */
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if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
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mcopy = m_copy(m, 0, (int)M_COPYALL);
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break;
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}
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#endif
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#ifdef NETATALK
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case AF_APPLETALK: {
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struct at_ifaddr *aa;
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if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst)) {
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#ifdef NETATALKDEBUG
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extern char *prsockaddr(struct sockaddr *);
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printf("aarpresolv: failed for %s\n", prsockaddr(dst));
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#endif
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return (0);
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}
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/*
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* ifaddr is the first thing in at_ifaddr
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*/
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if ((aa = at_ifawithnet( (struct sockaddr_at *)dst)) == 0)
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goto bad;
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/*
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* In the phase 2 case, we need to prepend an mbuf for the llc header.
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* Since we must preserve the value of m, which is passed to us by
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* value, we m_copy() the first mbuf, and use it for our llc header.
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*/
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if (aa->aa_flags & AFA_PHASE2) {
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struct llc llc;
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M_PREPEND(m, sizeof(struct llc), M_WAIT);
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if (m == 0)
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senderr(ENOBUFS);
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llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
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llc.llc_control = LLC_UI;
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bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code));
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llc.llc_snap_ether_type = htons(ETHERTYPE_AT);
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bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc));
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type = 0;
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} else {
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type = htons(ETHERTYPE_AT);
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}
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break;
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}
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#endif /* NETATALK */
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#ifdef NS
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case AF_NS:
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type = htons(ETHERTYPE_NS);
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bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
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(caddr_t)edst, sizeof (edst));
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if (!bcmp((caddr_t)edst, (caddr_t)&ns_thishost, sizeof(edst)))
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return (looutput(ifp, m, dst, rt));
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/* If broadcasting on a simplex interface, loopback a copy */
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if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
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mcopy = m_copy(m, 0, (int)M_COPYALL);
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break;
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#endif
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#ifdef ISO
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case AF_ISO: {
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int snpalen;
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struct llc *l;
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register struct sockaddr_dl *sdl;
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if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway) &&
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sdl->sdl_family == AF_LINK && sdl->sdl_alen > 0) {
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bcopy(LLADDR(sdl), (caddr_t)edst, sizeof(edst));
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} else if (error =
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iso_snparesolve(ifp, (struct sockaddr_iso *)dst,
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(char *)edst, &snpalen))
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goto bad; /* Not Resolved */
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/* If broadcasting on a simplex interface, loopback a copy */
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if (*edst & 1)
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m->m_flags |= (M_BCAST|M_MCAST);
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if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX) &&
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(mcopy = m_copy(m, 0, (int)M_COPYALL))) {
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M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT);
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if (mcopy) {
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fh = mtod(mcopy, struct fddi_header *);
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bcopy((caddr_t)edst,
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(caddr_t)fh->fddi_dhost, sizeof (edst));
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bcopy((caddr_t)ac->ac_enaddr,
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(caddr_t)fh->fddi_shost, sizeof (edst));
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}
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}
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M_PREPEND(m, 3, M_DONTWAIT);
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if (m == NULL)
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return (0);
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type = 0;
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l = mtod(m, struct llc *);
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l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP;
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l->llc_control = LLC_UI;
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IFDEBUG(D_ETHER)
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int i;
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printf("unoutput: sending pkt to: ");
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for (i=0; i<6; i++)
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printf("%x ", edst[i] & 0xff);
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printf("\n");
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ENDDEBUG
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} break;
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#endif /* ISO */
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#ifdef LLC
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/* case AF_NSAP: */
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case AF_CCITT: {
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register struct sockaddr_dl *sdl =
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(struct sockaddr_dl *) rt -> rt_gateway;
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if (sdl && sdl->sdl_family != AF_LINK && sdl->sdl_alen <= 0)
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goto bad; /* Not a link interface ? Funny ... */
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bcopy(LLADDR(sdl), (char *)edst, sizeof(edst));
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if ((ifp->if_flags & IFF_SIMPLEX) && (*edst & 1) &&
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(mcopy = m_copy(m, 0, (int)M_COPYALL))) {
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M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT);
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if (mcopy) {
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fh = mtod(mcopy, struct fddi_header *);
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bcopy((caddr_t)edst,
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(caddr_t)fh->fddi_dhost, sizeof (edst));
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bcopy((caddr_t)ac->ac_enaddr,
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(caddr_t)fh->fddi_shost, sizeof (edst));
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fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
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}
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}
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type = 0;
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#ifdef LLC_DEBUG
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{
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int i;
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register struct llc *l = mtod(m, struct llc *);
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printf("fddi_output: sending LLC2 pkt to: ");
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for (i=0; i<6; i++)
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printf("%x ", edst[i] & 0xff);
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printf(" len 0x%x dsap 0x%x ssap 0x%x control 0x%x\n",
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type & 0xff, l->llc_dsap & 0xff, l->llc_ssap &0xff,
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l->llc_control & 0xff);
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|
|
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}
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#endif /* LLC_DEBUG */
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} break;
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#endif /* LLC */
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|
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case AF_UNSPEC:
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{
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struct ether_header *eh;
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eh = (struct ether_header *)dst->sa_data;
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(void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst));
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if (*edst & 1)
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m->m_flags |= (M_BCAST|M_MCAST);
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type = eh->ether_type;
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break;
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}
|
|
|
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#if NBPFILTER > 0
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case AF_IMPLINK:
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{
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fh = mtod(m, struct fddi_header *);
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error = EPROTONOSUPPORT;
|
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switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) {
|
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case FDDIFC_LLC_ASYNC: {
|
|
/* legal priorities are 0 through 7 */
|
|
if ((fh->fddi_fc & FDDIFC_Z) > 7)
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goto bad;
|
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break;
|
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}
|
|
case FDDIFC_LLC_SYNC: {
|
|
/* FDDIFC_Z bits reserved, must be zero */
|
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if (fh->fddi_fc & FDDIFC_Z)
|
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goto bad;
|
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break;
|
|
}
|
|
case FDDIFC_SMT: {
|
|
/* FDDIFC_Z bits must be non zero */
|
|
if ((fh->fddi_fc & FDDIFC_Z) == 0)
|
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goto bad;
|
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break;
|
|
}
|
|
default: {
|
|
/* anything else is too dangerous */
|
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goto bad;
|
|
}
|
|
}
|
|
error = 0;
|
|
if (fh->fddi_dhost[0] & 1)
|
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m->m_flags |= (M_BCAST|M_MCAST);
|
|
goto queue_it;
|
|
}
|
|
#endif
|
|
default:
|
|
printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
|
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dst->sa_family);
|
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senderr(EAFNOSUPPORT);
|
|
}
|
|
|
|
|
|
if (mcopy)
|
|
(void) looutput(ifp, mcopy, dst, rt);
|
|
if (type != 0) {
|
|
register struct llc *l;
|
|
M_PREPEND(m, sizeof (struct llc), M_DONTWAIT);
|
|
if (m == 0)
|
|
senderr(ENOBUFS);
|
|
l = mtod(m, struct llc *);
|
|
l->llc_control = LLC_UI;
|
|
l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
|
|
l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0;
|
|
(void)memcpy((caddr_t) &l->llc_snap.ether_type, (caddr_t) &type,
|
|
sizeof(u_int16_t));
|
|
}
|
|
/*
|
|
* Add local net header. If no space in first mbuf,
|
|
* allocate another.
|
|
*/
|
|
M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT);
|
|
if (m == 0)
|
|
senderr(ENOBUFS);
|
|
fh = mtod(m, struct fddi_header *);
|
|
fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
|
|
(void)memcpy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst));
|
|
queue_it:
|
|
(void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr,
|
|
sizeof(fh->fddi_shost));
|
|
s = splimp();
|
|
/*
|
|
* Queue message on interface, and start output if interface
|
|
* not yet active.
|
|
*/
|
|
if (IF_QFULL(&ifp->if_snd)) {
|
|
IF_DROP(&ifp->if_snd);
|
|
splx(s);
|
|
senderr(ENOBUFS);
|
|
}
|
|
ifp->if_obytes += m->m_pkthdr.len;
|
|
IF_ENQUEUE(&ifp->if_snd, m);
|
|
if ((ifp->if_flags & IFF_OACTIVE) == 0)
|
|
(*ifp->if_start)(ifp);
|
|
splx(s);
|
|
if (m->m_flags & M_MCAST)
|
|
ifp->if_omcasts++;
|
|
return (error);
|
|
|
|
bad:
|
|
if (m)
|
|
m_freem(m);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Process a received FDDI packet;
|
|
* the packet is in the mbuf chain m without
|
|
* the fddi header, which is provided separately.
|
|
*/
|
|
void
|
|
fddi_input(ifp, fh, m)
|
|
struct ifnet *ifp;
|
|
register struct fddi_header *fh;
|
|
struct mbuf *m;
|
|
{
|
|
register struct ifqueue *inq;
|
|
register struct llc *l;
|
|
int s;
|
|
|
|
if ((ifp->if_flags & IFF_UP) == 0) {
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
getmicrotime(&ifp->if_lastchange);
|
|
ifp->if_ibytes += m->m_pkthdr.len + sizeof (*fh);
|
|
if (fh->fddi_dhost[0] & 1) {
|
|
if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost,
|
|
sizeof(fddibroadcastaddr)) == 0)
|
|
m->m_flags |= M_BCAST;
|
|
else
|
|
m->m_flags |= M_MCAST;
|
|
ifp->if_imcasts++;
|
|
} else if ((ifp->if_flags & IFF_PROMISC)
|
|
&& bcmp(((struct arpcom *)ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost,
|
|
sizeof(fh->fddi_dhost)) != 0) {
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
#ifdef M_LINK0
|
|
/*
|
|
* If this has a LLC priority of 0, then mark it so upper
|
|
* layers have a hint that it really came via a FDDI/Ethernet
|
|
* bridge.
|
|
*/
|
|
if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0)
|
|
m->m_flags |= M_LINK0;
|
|
#endif
|
|
|
|
l = mtod(m, struct llc *);
|
|
switch (l->llc_dsap) {
|
|
#if defined(INET) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK)
|
|
case LLC_SNAP_LSAP:
|
|
{
|
|
u_int16_t type;
|
|
if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP)
|
|
goto dropanyway;
|
|
#ifdef NETATALK
|
|
if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code,
|
|
sizeof(at_org_code)) == 0 &&
|
|
ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) {
|
|
inq = &atintrq2;
|
|
m_adj( m, sizeof( struct llc ));
|
|
schednetisr(NETISR_ATALK);
|
|
break;
|
|
}
|
|
|
|
if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code,
|
|
sizeof(aarp_org_code)) == 0 &&
|
|
ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) {
|
|
m_adj( m, sizeof( struct llc ));
|
|
aarpinput((struct arpcom *)ifp, m); /* XXX */
|
|
return;
|
|
}
|
|
#endif /* NETATALK */
|
|
if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0)
|
|
goto dropanyway;
|
|
type = ntohs(l->llc_snap.ether_type);
|
|
m_adj(m, 8);
|
|
switch (type) {
|
|
#ifdef INET
|
|
case ETHERTYPE_IP:
|
|
if (ipflow_fastforward(m))
|
|
return;
|
|
schednetisr(NETISR_IP);
|
|
inq = &ipintrq;
|
|
break;
|
|
|
|
case ETHERTYPE_ARP:
|
|
#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
|
|
schednetisr(NETISR_ARP);
|
|
inq = &arpintrq;
|
|
break;
|
|
#else
|
|
arpinput((struct arpcom *)ifp, m);
|
|
return;
|
|
#endif
|
|
#endif
|
|
#ifdef IPX
|
|
case ETHERTYPE_IPX:
|
|
schednetisr(NETISR_IPX);
|
|
inq = &ipxintrq;
|
|
break;
|
|
#endif
|
|
#ifdef NS
|
|
case ETHERTYPE_NS:
|
|
schednetisr(NETISR_NS);
|
|
inq = &nsintrq;
|
|
break;
|
|
#endif
|
|
#ifdef DECNET
|
|
case ETHERTYPE_DECNET:
|
|
schednetisr(NETISR_DECNET);
|
|
inq = &decnetintrq;
|
|
break;
|
|
#endif
|
|
#ifdef NETATALK
|
|
case ETHERTYPE_AT:
|
|
schednetisr(NETISR_ATALK);
|
|
inq = &atintrq1;
|
|
break;
|
|
case ETHERTYPE_AARP:
|
|
/* probably this should be done with a NETISR as well */
|
|
aarpinput((struct arpcom *)ifp, m); /* XXX */
|
|
return;
|
|
#endif /* NETATALK */
|
|
default:
|
|
/* printf("fddi_input: unknown protocol 0x%x\n", type); */
|
|
ifp->if_noproto++;
|
|
goto dropanyway;
|
|
}
|
|
break;
|
|
}
|
|
#endif /* INET || NS */
|
|
#ifdef ISO
|
|
case LLC_ISO_LSAP:
|
|
switch (l->llc_control) {
|
|
case LLC_UI:
|
|
/* LLC_UI_P forbidden in class 1 service */
|
|
if ((l->llc_dsap == LLC_ISO_LSAP) &&
|
|
(l->llc_ssap == LLC_ISO_LSAP)) {
|
|
/* LSAP for ISO */
|
|
m->m_data += 3; /* XXX */
|
|
m->m_len -= 3; /* XXX */
|
|
m->m_pkthdr.len -= 3; /* XXX */
|
|
M_PREPEND(m, sizeof *fh, M_DONTWAIT);
|
|
if (m == 0)
|
|
return;
|
|
*mtod(m, struct fddi_header *) = *fh;
|
|
IFDEBUG(D_ETHER)
|
|
printf("clnp packet");
|
|
ENDDEBUG
|
|
schednetisr(NETISR_ISO);
|
|
inq = &clnlintrq;
|
|
break;
|
|
}
|
|
goto dropanyway;
|
|
|
|
case LLC_XID:
|
|
case LLC_XID_P:
|
|
if(m->m_len < 6)
|
|
goto dropanyway;
|
|
l->llc_window = 0;
|
|
l->llc_fid = 9;
|
|
l->llc_class = 1;
|
|
l->llc_dsap = l->llc_ssap = 0;
|
|
/* Fall through to */
|
|
case LLC_TEST:
|
|
case LLC_TEST_P:
|
|
{
|
|
struct sockaddr sa;
|
|
register struct ether_header *eh;
|
|
struct arpcom *ac = (struct arpcom *) ifp;
|
|
int i;
|
|
u_char c = l->llc_dsap;
|
|
|
|
l->llc_dsap = l->llc_ssap;
|
|
l->llc_ssap = c;
|
|
if (m->m_flags & (M_BCAST | M_MCAST))
|
|
bcopy((caddr_t)ac->ac_enaddr,
|
|
(caddr_t)eh->ether_dhost, 6);
|
|
sa.sa_family = AF_UNSPEC;
|
|
sa.sa_len = sizeof(sa);
|
|
eh = (struct ether_header *)sa.sa_data;
|
|
for (i = 0; i < 6; i++) {
|
|
eh->ether_shost[i] = fh->fddi_dhost[i];
|
|
eh->ether_dhost[i] = fh->fddi_shost[i];
|
|
}
|
|
eh->ether_type = 0;
|
|
ifp->if_output(ifp, m, &sa, NULL);
|
|
return;
|
|
}
|
|
default:
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
break;
|
|
#endif /* ISO */
|
|
#ifdef LLC
|
|
case LLC_X25_LSAP:
|
|
{
|
|
M_PREPEND(m, sizeof(struct sdl_hdr) , M_DONTWAIT);
|
|
if (m == 0)
|
|
return;
|
|
if ( !sdl_sethdrif(ifp, fh->fddi_shost, LLC_X25_LSAP,
|
|
fh->fddi_dhost, LLC_X25_LSAP, 6,
|
|
mtod(m, struct sdl_hdr *)))
|
|
panic("ETHER cons addr failure");
|
|
mtod(m, struct sdl_hdr *)->sdlhdr_len = m->m_pkthdr.len - sizeof(struct sdl_hdr);
|
|
#ifdef LLC_DEBUG
|
|
printf("llc packet\n");
|
|
#endif /* LLC_DEBUG */
|
|
schednetisr(NETISR_CCITT);
|
|
inq = &llcintrq;
|
|
break;
|
|
}
|
|
#endif /* LLC */
|
|
|
|
default:
|
|
/* printf("fddi_input: unknown dsap 0x%x\n", l->llc_dsap); */
|
|
ifp->if_noproto++;
|
|
dropanyway:
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
s = splimp();
|
|
if (IF_QFULL(inq)) {
|
|
IF_DROP(inq);
|
|
m_freem(m);
|
|
} else
|
|
IF_ENQUEUE(inq, m);
|
|
splx(s);
|
|
}
|
|
/*
|
|
* Perform common duties while attaching to interface list
|
|
*/
|
|
#ifdef __NetBSD__
|
|
#define ifa_next ifa_list.tqe_next
|
|
#endif
|
|
|
|
void
|
|
fddi_ifattach(ifp)
|
|
register struct ifnet *ifp;
|
|
{
|
|
register struct ifaddr *ifa;
|
|
register struct sockaddr_dl *sdl;
|
|
|
|
ifp->if_type = IFT_FDDI;
|
|
ifp->if_addrlen = 6;
|
|
ifp->if_hdrlen = 21;
|
|
ifp->if_mtu = FDDIMTU;
|
|
ifp->if_baudrate = 100000000;
|
|
#ifdef IFF_NOTRAILERS
|
|
ifp->if_flags |= IFF_NOTRAILERS;
|
|
#endif
|
|
#if defined(__FreeBSD__)
|
|
ifa = ifnet_addrs[ifp->if_index - 1];
|
|
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
|
|
sdl->sdl_type = IFT_FDDI;
|
|
sdl->sdl_alen = ifp->if_addrlen;
|
|
bcopy(((struct arpcom *)ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen);
|
|
#elif defined(__NetBSD__)
|
|
LIST_INIT(&((struct arpcom *)ifp)->ac_multiaddrs);
|
|
for (ifa = ifp->if_addrlist.tqh_first; ifa != NULL; ifa = ifa->ifa_list.tqe_next)
|
|
#else
|
|
for (ifa = ifp->if_addrlist; ifa != NULL; ifa = ifa->ifa_next)
|
|
#endif
|
|
#if !defined(__FreeBSD__)
|
|
if ((sdl = (struct sockaddr_dl *)ifa->ifa_addr) &&
|
|
sdl->sdl_family == AF_LINK) {
|
|
sdl->sdl_type = IFT_FDDI;
|
|
sdl->sdl_alen = ifp->if_addrlen;
|
|
bcopy((caddr_t)((struct arpcom *)ifp)->ac_enaddr,
|
|
LLADDR(sdl), ifp->if_addrlen);
|
|
break;
|
|
}
|
|
#endif
|
|
}
|