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freebsd-skq/sys/net/if_fddisubr.c

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/*
* Copyright (c) 1995, 1996
* Matt Thomas <matt@3am-software.com>. All rights reserved.
* Copyright (c) 1982, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: if_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp
* $FreeBSD$
*/
#include "opt_atalk.h"
#include "opt_inet.h"
#include "opt_inet6.h"
#include "opt_ipx.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/netisr.h>
#include <net/route.h>
#include <net/if_llc.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#if defined(INET) || defined(INET6)
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#endif
#ifdef INET6
#include <netinet6/nd6.h>
#endif
#if defined(__FreeBSD__)
#include <netinet/if_fddi.h>
#else
#include <net/if_fddi.h>
#endif
#ifdef IPX
#include <netipx/ipx.h>
#include <netipx/ipx_if.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#ifdef DECNET
#include <netdnet/dn.h>
#endif
#ifdef ISO
#include <netiso/argo_debug.h>
#include <netiso/iso.h>
#include <netiso/iso_var.h>
#include <netiso/iso_snpac.h>
#endif
#ifdef LLC
#include <netccitt/dll.h>
#include <netccitt/llc_var.h>
#endif
#ifdef NETATALK
#include <netatalk/at.h>
#include <netatalk/at_var.h>
#include <netatalk/at_extern.h>
#define llc_snap_org_code llc_un.type_snap.org_code
#define llc_snap_ether_type llc_un.type_snap.ether_type
extern u_char at_org_code[ 3 ];
extern u_char aarp_org_code[ 3 ];
#endif /* NETATALK */
#if defined(LLC) && defined(CCITT)
extern struct ifqueue pkintrq;
#endif
#define senderr(e) { error = (e); goto bad;}
/*
* This really should be defined in if_llc.h but in case it isn't.
*/
#ifndef llc_snap
#define llc_snap llc_un.type_snap
#endif
#if defined(__bsdi__) || defined(__NetBSD__)
#define RTALLOC1(a, b) rtalloc1(a, b)
#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e)
#elif defined(__FreeBSD__)
#define RTALLOC1(a, b) rtalloc1(a, b, 0UL)
#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e, f)
#endif
/*
* FDDI output routine.
* Encapsulate a packet of type family for the local net.
* Use trailer local net encapsulation if enough data in first
* packet leaves a multiple of 512 bytes of data in remainder.
* Assumes that ifp is actually pointer to arpcom structure.
*/
int
fddi_output(ifp, m, dst, rt0)
register struct ifnet *ifp;
struct mbuf *m;
struct sockaddr *dst;
struct rtentry *rt0;
{
u_int16_t type;
int s, loop_copy = 0, error = 0, hdrcmplt = 0;
u_char esrc[6], edst[6];
register struct rtentry *rt;
register struct fddi_header *fh;
struct arpcom *ac = (struct arpcom *)ifp;
if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
senderr(ENETDOWN);
getmicrotime(&ifp->if_lastchange);
#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
if ((rt = rt0) != NULL) {
if ((rt->rt_flags & RTF_UP) == 0) {
if ((rt0 = rt = RTALLOC1(dst, 1)) != NULL)
rt->rt_refcnt--;
else
senderr(EHOSTUNREACH);
}
if (rt->rt_flags & RTF_GATEWAY) {
if (rt->rt_gwroute == 0)
goto lookup;
if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
rtfree(rt); rt = rt0;
lookup: rt->rt_gwroute = RTALLOC1(rt->rt_gateway, 1);
if ((rt = rt->rt_gwroute) == 0)
senderr(EHOSTUNREACH);
}
}
if (rt->rt_flags & RTF_REJECT)
if (rt->rt_rmx.rmx_expire == 0 ||
time_second < rt->rt_rmx.rmx_expire)
senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
}
#endif
switch (dst->sa_family) {
#ifdef INET
case AF_INET: {
#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
if (!ARPRESOLVE(ac, rt, m, dst, edst, rt0))
return (0); /* if not yet resolved */
#else
int usetrailers;
if (!arpresolve(ac, m, &((struct sockaddr_in *)dst)->sin_addr, edst, &usetrailers))
return (0); /* if not yet resolved */
#endif
type = htons(ETHERTYPE_IP);
break;
}
#endif
#ifdef INET6
case AF_INET6:
if (!nd6_storelladdr(&ac->ac_if, rt, m, dst, (u_char *)edst)) {
/* this must be impossible, so we bark */
printf("nd6_storelladdr failed\n");
return(0);
}
type = htons(ETHERTYPE_IPV6);
break;
#endif
#ifdef IPX
case AF_IPX:
type = htons(ETHERTYPE_IPX);
bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
(caddr_t)edst, sizeof (edst));
break;
#endif
#ifdef NETATALK
case AF_APPLETALK: {
struct at_ifaddr *aa;
if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst))
return (0);
/*
* ifaddr is the first thing in at_ifaddr
*/
if ((aa = at_ifawithnet( (struct sockaddr_at *)dst)) == 0)
goto bad;
/*
* In the phase 2 case, we need to prepend an mbuf for the llc header.
* Since we must preserve the value of m, which is passed to us by
* value, we m_copy() the first mbuf, and use it for our llc header.
*/
if (aa->aa_flags & AFA_PHASE2) {
struct llc llc;
M_PREPEND(m, sizeof(struct llc), M_WAIT);
if (m == 0)
senderr(ENOBUFS);
llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
llc.llc_control = LLC_UI;
bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code));
llc.llc_snap_ether_type = htons(ETHERTYPE_AT);
bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc));
type = 0;
} else {
type = htons(ETHERTYPE_AT);
}
break;
}
#endif /* NETATALK */
#ifdef NS
case AF_NS:
type = htons(ETHERTYPE_NS);
bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
(caddr_t)edst, sizeof (edst));
break;
#endif
#ifdef ISO
case AF_ISO: {
int snpalen;
struct llc *l;
register struct sockaddr_dl *sdl;
if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway) &&
sdl->sdl_family == AF_LINK && sdl->sdl_alen > 0) {
bcopy(LLADDR(sdl), (caddr_t)edst, sizeof(edst));
} else if (error =
iso_snparesolve(ifp, (struct sockaddr_iso *)dst,
(char *)edst, &snpalen))
goto bad; /* Not Resolved */
/* If broadcasting on a simplex interface, loopback a copy */
if (*edst & 1)
m->m_flags |= (M_BCAST|M_MCAST);
M_PREPEND(m, 3, M_DONTWAIT);
if (m == NULL)
return (0);
type = 0;
l = mtod(m, struct llc *);
l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP;
l->llc_control = LLC_UI;
IFDEBUG(D_ETHER)
int i;
printf("unoutput: sending pkt to: ");
for (i=0; i<6; i++)
printf("%x ", edst[i] & 0xff);
printf("\n");
ENDDEBUG
} break;
#endif /* ISO */
#ifdef LLC
/* case AF_NSAP: */
case AF_CCITT: {
register struct sockaddr_dl *sdl =
(struct sockaddr_dl *) rt -> rt_gateway;
if (sdl && sdl->sdl_family != AF_LINK && sdl->sdl_alen <= 0)
goto bad; /* Not a link interface ? Funny ... */
bcopy(LLADDR(sdl), (char *)edst, sizeof(edst));
if (*edst & 1)
loop_copy = 1;
type = 0;
#ifdef LLC_DEBUG
{
int i;
register struct llc *l = mtod(m, struct llc *);
printf("fddi_output: sending LLC2 pkt to: ");
for (i=0; i<6; i++)
printf("%x ", edst[i] & 0xff);
printf(" len 0x%x dsap 0x%x ssap 0x%x control 0x%x\n",
type & 0xff, l->llc_dsap & 0xff, l->llc_ssap &0xff,
l->llc_control & 0xff);
}
#endif /* LLC_DEBUG */
} break;
#endif /* LLC */
case pseudo_AF_HDRCMPLT:
{
struct ether_header *eh;
hdrcmplt = 1;
eh = (struct ether_header *)dst->sa_data;
(void)memcpy((caddr_t)esrc, (caddr_t)eh->ether_shost, sizeof (esrc));
/* FALLTHROUGH */
}
case AF_UNSPEC:
{
struct ether_header *eh;
loop_copy = -1;
eh = (struct ether_header *)dst->sa_data;
(void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst));
if (*edst & 1)
m->m_flags |= (M_BCAST|M_MCAST);
type = eh->ether_type;
break;
}
case AF_IMPLINK:
{
fh = mtod(m, struct fddi_header *);
error = EPROTONOSUPPORT;
switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) {
case FDDIFC_LLC_ASYNC: {
/* legal priorities are 0 through 7 */
if ((fh->fddi_fc & FDDIFC_Z) > 7)
goto bad;
break;
}
case FDDIFC_LLC_SYNC: {
/* FDDIFC_Z bits reserved, must be zero */
if (fh->fddi_fc & FDDIFC_Z)
goto bad;
break;
}
case FDDIFC_SMT: {
/* FDDIFC_Z bits must be non zero */
if ((fh->fddi_fc & FDDIFC_Z) == 0)
goto bad;
break;
}
default: {
/* anything else is too dangerous */
goto bad;
}
}
error = 0;
if (fh->fddi_dhost[0] & 1)
m->m_flags |= (M_BCAST|M_MCAST);
goto queue_it;
}
default:
printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
dst->sa_family);
senderr(EAFNOSUPPORT);
}
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:
if (hdrcmplt)
(void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)esrc,
sizeof(fh->fddi_shost));
else
(void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr,
sizeof(fh->fddi_shost));
/*
* If a simplex interface, and the packet is being sent to our
* Ethernet address or a broadcast address, loopback a copy.
* XXX To make a simplex device behave exactly like a duplex
* device, we should copy in the case of sending to our own
* ethernet address (thus letting the original actually appear
* on the wire). However, we don't do that here for security
* reasons and compatibility with the original behavior.
*/
if ((ifp->if_flags & IFF_SIMPLEX) &&
(loop_copy != -1)) {
if ((m->m_flags & M_BCAST) || loop_copy) {
struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
(void) if_simloop(ifp,
n, dst, sizeof(struct fddi_header));
} else if (bcmp(fh->fddi_dhost,
fh->fddi_shost, sizeof(fh->fddi_shost)) == 0) {
(void) if_simloop(ifp,
m, dst, sizeof(struct fddi_header));
return(0); /* XXX */
}
}
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(INET6) || 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 INET6
case ETHERTYPE_IPV6:
schednetisr(NETISR_IPV6);
inq = &ip6intrq;
break;
#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
}
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