897 lines
23 KiB
C
897 lines
23 KiB
C
/* $NetBSD: if_fddisubr.c,v 1.35 2000/12/12 18:00:26 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
|
* 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
|
|
*/
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* @(#)if_fddisubr.c 8.1 (Berkeley) 6/10/93
|
|
*
|
|
* Id: if_fddisubr.c,v 1.15 1997/03/21 22:35:50 thomas Exp
|
|
*/
|
|
#include "opt_inet.h"
|
|
#include "opt_atalk.h"
|
|
#include "opt_ccitt.h"
|
|
#include "opt_llc.h"
|
|
#include "opt_iso.h"
|
|
#include "opt_ns.h"
|
|
|
|
#include "bpfilter.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/protosw.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/syslog.h>
|
|
|
|
#include <machine/cpu.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 NBPFILTER > 0
|
|
#include <net/bpf.h>
|
|
#endif
|
|
|
|
#ifdef INET
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_var.h>
|
|
#if defined(__NetBSD__)
|
|
#include <netinet/if_inarp.h>
|
|
#include "opt_gateway.h"
|
|
#else
|
|
#include <netinet/if_ether.h>
|
|
#endif
|
|
#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 INET6
|
|
#ifndef INET
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_var.h>
|
|
#endif
|
|
#include <netinet6/nd6.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
|
|
|
|
#include "bpfilter.h"
|
|
|
|
#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)
|
|
#define ETYPEHTONS(t) (t)
|
|
#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)
|
|
#define ETYPEHTONS(t) (t)
|
|
#endif
|
|
|
|
#if defined(__NetBSD__)
|
|
#define FDDIADDR(ifp) LLADDR((ifp)->if_sadl)
|
|
#else
|
|
#define FDDICOM(ifp) ((struct arpcom *)(ifp))
|
|
#define FDDIADDR(ifp) (FDDICOM(ifp)->ac_enaddr)
|
|
#endif
|
|
|
|
static int fddi_output __P((struct ifnet *, struct mbuf *,
|
|
struct sockaddr *, struct rtentry *));
|
|
static void fddi_input __P((struct ifnet *, struct mbuf *));
|
|
|
|
/*
|
|
* FDDI output routine.
|
|
* Encapsulate a packet of type family for the local net.
|
|
* Assumes that ifp is actually pointer to ethercom structure.
|
|
*/
|
|
static int
|
|
fddi_output(ifp, m0, dst, rt0)
|
|
struct ifnet *ifp;
|
|
struct mbuf *m0;
|
|
struct sockaddr *dst;
|
|
struct rtentry *rt0;
|
|
{
|
|
u_int16_t etype;
|
|
int s, error = 0, hdrcmplt = 0;
|
|
u_char esrc[6], edst[6];
|
|
struct mbuf *m = m0;
|
|
struct rtentry *rt;
|
|
struct fddi_header *fh;
|
|
struct mbuf *mcopy = (struct mbuf *)0;
|
|
|
|
if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
|
|
senderr(ENETDOWN);
|
|
ifp->if_lastchange = time;
|
|
#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.tv_sec < 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 defined(__NetBSD__)
|
|
#define SIN(x) ((struct sockaddr_in *)(x))
|
|
if (m->m_flags & M_BCAST)
|
|
bcopy((caddr_t)fddibroadcastaddr, (caddr_t)edst,
|
|
sizeof(edst));
|
|
|
|
else if (m->m_flags & M_MCAST) {
|
|
ETHER_MAP_IP_MULTICAST(&SIN(dst)->sin_addr,
|
|
(caddr_t)edst)
|
|
} else if (!arpresolve(ifp, rt, m, dst, edst))
|
|
#else
|
|
if (!ARPRESOLVE(FDDICOM(ifp), rt, m, dst, edst, rt0))
|
|
#endif
|
|
return (0); /* if not yet resolved */
|
|
#else
|
|
int usetrailers;
|
|
if (!arpresolve(FDDICOM(ifp), m, &((struct sockaddr_in *)dst)->sin_addr, edst, &usetrailers))
|
|
return (0); /* if not yet resolved */
|
|
#endif
|
|
/* If broadcasting on a simplex interface, loopback a copy */
|
|
if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
|
|
mcopy = m_copy(m, 0, (int)M_COPYALL);
|
|
etype = htons(ETHERTYPE_IP);
|
|
break;
|
|
}
|
|
#endif
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
#ifdef OLDIP6OUTPUT
|
|
if (!nd6_resolve(ifp, rt, m, dst, edst))
|
|
return (0); /* if not yet resolved */
|
|
#else
|
|
if (!nd6_storelladdr(ifp, rt, m, dst, (u_char *)edst)){
|
|
/* something bad happened */
|
|
return(0);
|
|
}
|
|
#endif /* OLDIP6OUTPUT */
|
|
etype = htons(ETHERTYPE_IPV6);
|
|
break;
|
|
#endif
|
|
#ifdef AF_ARP
|
|
case AF_ARP: {
|
|
struct arphdr *ah = mtod(m, struct arphdr *);
|
|
if (m->m_flags & M_BCAST)
|
|
bcopy((caddr_t)etherbroadcastaddr, (caddr_t)edst,
|
|
sizeof(edst));
|
|
else
|
|
bcopy((caddr_t)ar_tha(ah),
|
|
(caddr_t)edst, sizeof(edst));
|
|
|
|
ah->ar_hrd = htons(ARPHRD_ETHER);
|
|
|
|
switch (ntohs(ah->ar_op)) {
|
|
case ARPOP_REVREQUEST:
|
|
case ARPOP_REVREPLY:
|
|
etype = htons(ETHERTYPE_REVARP);
|
|
break;
|
|
|
|
case ARPOP_REQUEST:
|
|
case ARPOP_REPLY:
|
|
default:
|
|
etype = htons(ETHERTYPE_ARP);
|
|
}
|
|
|
|
break;
|
|
}
|
|
#endif /* AF_ARP */
|
|
#ifdef IPX
|
|
case AF_IPX:
|
|
etype = htons(ETHERTYPE_IPX);
|
|
bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
|
|
(caddr_t)edst, sizeof (edst));
|
|
/* If broadcasting on a simplex interface, loopback a copy */
|
|
if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
|
|
mcopy = m_copy(m, 0, (int)M_COPYALL);
|
|
break;
|
|
#endif
|
|
#ifdef NETATALK
|
|
case AF_APPLETALK: {
|
|
struct at_ifaddr *aa;
|
|
if (!aarpresolve(ifp, m, (struct sockaddr_at *)dst, edst)) {
|
|
#ifdef NETATALKDEBUG
|
|
printf("aarpresolv: failed\n");
|
|
#endif
|
|
return (0);
|
|
}
|
|
/*
|
|
* ifaddr is the first thing in at_ifaddr
|
|
*/
|
|
if ((aa = (struct at_ifaddr *)at_ifawithnet(
|
|
(struct sockaddr_at *)dst, ifp)) == NULL)
|
|
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_NOWAIT);
|
|
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_ATALK);
|
|
bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc));
|
|
etype = 0;
|
|
} else {
|
|
etype = htons(ETHERTYPE_ATALK);
|
|
}
|
|
break;
|
|
}
|
|
#endif /* NETATALK */
|
|
#ifdef NS
|
|
case AF_NS:
|
|
etype = htons(ETHERTYPE_NS);
|
|
bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
|
|
(caddr_t)edst, sizeof (edst));
|
|
if (!bcmp((caddr_t)edst, (caddr_t)&ns_thishost, sizeof(edst)))
|
|
return (looutput(ifp, m, dst, rt));
|
|
/* If broadcasting on a simplex interface, loopback a copy */
|
|
if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
|
|
mcopy = m_copy(m, 0, (int)M_COPYALL);
|
|
break;
|
|
#endif
|
|
#ifdef ISO
|
|
case AF_ISO: {
|
|
int snpalen;
|
|
struct llc *l;
|
|
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)) != 0)
|
|
goto bad; /* Not Resolved */
|
|
/* If broadcasting on a simplex interface, loopback a copy */
|
|
if (*edst & 1)
|
|
m->m_flags |= (M_BCAST|M_MCAST);
|
|
if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX) &&
|
|
(mcopy = m_copy(m, 0, (int)M_COPYALL))) {
|
|
M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT);
|
|
if (mcopy) {
|
|
fh = mtod(mcopy, struct fddi_header *);
|
|
bcopy((caddr_t)edst,
|
|
(caddr_t)fh->fddi_dhost, sizeof (edst));
|
|
bcopy((caddr_t)FDDIADDR(ifp),
|
|
(caddr_t)fh->fddi_shost, sizeof (edst));
|
|
}
|
|
}
|
|
M_PREPEND(m, 3, M_DONTWAIT);
|
|
if (m == NULL)
|
|
return (0);
|
|
etype = 0;
|
|
l = mtod(m, struct llc *);
|
|
l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP;
|
|
l->llc_control = LLC_UI;
|
|
#if defined(__FreeBSD__)
|
|
IFDEBUG(D_ETHER)
|
|
int i;
|
|
printf("unoutput: sending pkt to: ");
|
|
for (i=0; i<6; i++)
|
|
printf("%x ", edst[i] & 0xff);
|
|
printf("\n");
|
|
ENDDEBUG
|
|
#endif
|
|
} break;
|
|
#endif /* ISO */
|
|
#ifdef LLC
|
|
/* case AF_NSAP: */
|
|
case AF_CCITT: {
|
|
struct sockaddr_dl *sdl =
|
|
(struct sockaddr_dl *) rt->rt_gateway;
|
|
|
|
if (sdl && sdl->sdl_family == AF_LINK
|
|
&& sdl->sdl_alen > 0) {
|
|
bcopy(LLADDR(sdl), (char *)edst, sizeof(edst));
|
|
} else goto bad; /* Not a link interface ? Funny ... */
|
|
|
|
if ((ifp->if_flags & IFF_SIMPLEX) && (*edst & 1) &&
|
|
(mcopy = m_copy(m, 0, (int)M_COPYALL))) {
|
|
M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT);
|
|
if (mcopy) {
|
|
fh = mtod(mcopy, struct fddi_header *);
|
|
bcopy((caddr_t)edst,
|
|
(caddr_t)fh->fddi_dhost, sizeof (edst));
|
|
bcopy((caddr_t)FDDIADDR(ifp),
|
|
(caddr_t)fh->fddi_shost, sizeof (edst));
|
|
fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
|
|
}
|
|
}
|
|
etype = 0;
|
|
#ifdef LLC_DEBUG
|
|
{
|
|
int i;
|
|
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",
|
|
m->m_pkthdr.len, l->llc_dsap & 0xff, l->llc_ssap &0xff,
|
|
l->llc_control & 0xff);
|
|
|
|
}
|
|
#endif /* LLC_DEBUG */
|
|
} break;
|
|
#endif /* LLC */
|
|
|
|
case pseudo_AF_HDRCMPLT:
|
|
{
|
|
struct fddi_header *fh = (struct fddi_header *)dst->sa_data;
|
|
hdrcmplt = 1;
|
|
bcopy((caddr_t)fh->fddi_shost, (caddr_t)esrc, sizeof (esrc));
|
|
/*FALLTHROUGH*/
|
|
}
|
|
|
|
case AF_LINK:
|
|
{
|
|
struct fddi_header *fh = (struct fddi_header *)dst->sa_data;
|
|
bcopy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst));
|
|
if (*edst & 1)
|
|
m->m_flags |= (M_BCAST|M_MCAST);
|
|
etype = 0;
|
|
break;
|
|
}
|
|
|
|
case AF_UNSPEC:
|
|
{
|
|
struct ether_header *eh;
|
|
eh = (struct ether_header *)dst->sa_data;
|
|
bcopy((caddr_t)eh->ether_dhost, (caddr_t)edst, sizeof (edst));
|
|
if (*edst & 1)
|
|
m->m_flags |= (M_BCAST|M_MCAST);
|
|
etype = ETYPEHTONS(eh->ether_type);
|
|
break;
|
|
}
|
|
|
|
#if NBPFILTER > 0
|
|
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;
|
|
}
|
|
#endif
|
|
default:
|
|
#if defined(__NetBSD__)
|
|
printf("%s: can't handle af%d\n", ifp->if_xname,
|
|
dst->sa_family);
|
|
#else
|
|
printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
|
|
dst->sa_family);
|
|
#endif
|
|
senderr(EAFNOSUPPORT);
|
|
}
|
|
|
|
|
|
if (mcopy)
|
|
(void) looutput(ifp, mcopy, dst, rt);
|
|
if (etype != 0) {
|
|
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;
|
|
bcopy((caddr_t) &etype, (caddr_t) &l->llc_snap.ether_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;
|
|
bcopy((caddr_t)edst, (caddr_t)fh->fddi_dhost, sizeof (edst));
|
|
#if NBPFILTER > 0
|
|
queue_it:
|
|
#endif
|
|
if (hdrcmplt)
|
|
bcopy((caddr_t)esrc, (caddr_t)fh->fddi_shost,
|
|
sizeof(fh->fddi_shost));
|
|
else
|
|
bcopy((caddr_t)FDDIADDR(ifp), (caddr_t)fh->fddi_shost,
|
|
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 (m->m_flags & M_MCAST)
|
|
ifp->if_omcasts++;
|
|
IF_ENQUEUE(&ifp->if_snd, m);
|
|
if ((ifp->if_flags & IFF_OACTIVE) == 0)
|
|
(*ifp->if_start)(ifp);
|
|
splx(s);
|
|
return (error);
|
|
|
|
bad:
|
|
if (m)
|
|
m_freem(m);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Process a received FDDI packet;
|
|
* the packet is in the mbuf chain m with
|
|
* the fddi header.
|
|
*/
|
|
static void
|
|
fddi_input(ifp, m)
|
|
struct ifnet *ifp;
|
|
struct mbuf *m;
|
|
{
|
|
struct ifqueue *inq;
|
|
struct llc *l;
|
|
struct fddi_header *fh;
|
|
int s;
|
|
|
|
if ((ifp->if_flags & IFF_UP) == 0) {
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
fh = mtod(m, struct fddi_header *);
|
|
|
|
ifp->if_lastchange = time;
|
|
ifp->if_ibytes += m->m_pkthdr.len;
|
|
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(FDDIADDR(ifp), (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
|
|
|
|
/* Strip off the FDDI header. */
|
|
m_adj(m, sizeof(struct fddi_header));
|
|
|
|
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 etype;
|
|
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_ATALK) {
|
|
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(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;
|
|
etype = ntohs(l->llc_snap.ether_type);
|
|
m_adj(m, 8);
|
|
switch (etype) {
|
|
#ifdef INET
|
|
case ETHERTYPE_IP:
|
|
#ifdef GATEWAY
|
|
if (ipflow_fastforward(m))
|
|
return;
|
|
#endif
|
|
schednetisr(NETISR_IP);
|
|
inq = &ipintrq;
|
|
break;
|
|
|
|
case ETHERTYPE_ARP:
|
|
#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
|
|
schednetisr(NETISR_ARP);
|
|
inq = &arpintrq;
|
|
break;
|
|
#else
|
|
arpinput(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 INET6
|
|
case ETHERTYPE_IPV6:
|
|
schednetisr(NETISR_IPV6);
|
|
inq = &ip6intrq;
|
|
break;
|
|
|
|
#endif
|
|
#ifdef DECNET
|
|
case ETHERTYPE_DECNET:
|
|
schednetisr(NETISR_DECNET);
|
|
inq = &decnetintrq;
|
|
break;
|
|
#endif
|
|
#ifdef NETATALK
|
|
case ETHERTYPE_ATALK:
|
|
schednetisr(NETISR_ATALK);
|
|
inq = &atintrq1;
|
|
break;
|
|
case ETHERTYPE_AARP:
|
|
/* probably this should be done with a NETISR as well */
|
|
aarpinput(ifp, m); /* XXX */
|
|
return;
|
|
#endif /* NETATALK */
|
|
default:
|
|
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;
|
|
#if defined(__FreeBSD__)
|
|
IFDEBUG(D_ETHER)
|
|
printf("clnp packet");
|
|
ENDDEBUG
|
|
#endif
|
|
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;
|
|
struct ether_header *eh;
|
|
int i;
|
|
u_char c = l->llc_dsap;
|
|
|
|
l->llc_dsap = l->llc_ssap;
|
|
l->llc_ssap = c;
|
|
eh = (struct ether_header *)sa.sa_data;
|
|
if (m->m_flags & (M_BCAST | M_MCAST))
|
|
bcopy((caddr_t)FDDIADDR(ifp),
|
|
(caddr_t)eh->ether_dhost, 6);
|
|
sa.sa_family = AF_UNSPEC;
|
|
sa.sa_len = sizeof(sa);
|
|
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:
|
|
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
|
|
*/
|
|
#if defined(__NetBSD__)
|
|
void
|
|
fddi_ifattach(ifp, lla)
|
|
struct ifnet *ifp;
|
|
caddr_t lla;
|
|
#else
|
|
void
|
|
fddi_ifattach(ifp)
|
|
struct ifnet *ifp;
|
|
#endif
|
|
{
|
|
#if !defined(__NetBSD__)
|
|
struct ifaddr *ifa;
|
|
#endif
|
|
struct sockaddr_dl *sdl;
|
|
|
|
ifp->if_type = IFT_FDDI;
|
|
ifp->if_addrlen = 6;
|
|
ifp->if_hdrlen = 21;
|
|
ifp->if_mtu = FDDIMTU;
|
|
ifp->if_output = fddi_output;
|
|
ifp->if_input = fddi_input;
|
|
ifp->if_baudrate = IF_Mbps(100);
|
|
#ifdef IFF_NOTRAILERS
|
|
ifp->if_flags |= IFF_NOTRAILERS;
|
|
#endif
|
|
#if defined(__NetBSD__)
|
|
if ((sdl = ifp->if_sadl) != NULL && sdl->sdl_family == AF_LINK) {
|
|
sdl->sdl_type = IFT_FDDI;
|
|
sdl->sdl_alen = ifp->if_addrlen;
|
|
bcopy(lla, LLADDR(sdl), ifp->if_addrlen);
|
|
}
|
|
ifp->if_broadcastaddr = fddibroadcastaddr;
|
|
#if NBPFILTER > 0
|
|
bpfattach(ifp, DLT_FDDI, sizeof(struct fddi_header));
|
|
#endif /* NBPFILTER > 0 */
|
|
#else
|
|
for (ifa = ifp->if_addrlist; ifa != NULL; ifa = ifa->ifa_next)
|
|
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(FDDIADDR(ifp), LLADDR(sdl), ifp->if_addrlen);
|
|
break;
|
|
}
|
|
#endif
|
|
}
|