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30 |
unneback |
/*
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| 2 |
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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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| 10 |
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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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| 21 |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 22 |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 |
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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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| 30 |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 |
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* SUCH DAMAGE.
|
| 32 |
|
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*
|
| 33 |
|
|
* @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93
|
| 34 |
|
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* $Id: if_ethersubr.c,v 1.2 2001-09-27 12:01:54 chris Exp $
|
| 35 |
|
|
*/
|
| 36 |
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|
| 37 |
|
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#include <sys/param.h>
|
| 38 |
|
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#include <sys/systm.h>
|
| 39 |
|
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#include <sys/kernel.h>
|
| 40 |
|
|
#include <sys/malloc.h>
|
| 41 |
|
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#include <sys/mbuf.h>
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| 42 |
|
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#include <sys/protosw.h>
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| 43 |
|
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#include <sys/socket.h>
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| 44 |
|
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#include <sys/ioctl.h>
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| 45 |
|
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#include <sys/errno.h>
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| 46 |
|
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#include <sys/syslog.h>
|
| 47 |
|
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#include <sys/sysctl.h>
|
| 48 |
|
|
|
| 49 |
|
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#include <net/if.h>
|
| 50 |
|
|
#include <net/netisr.h>
|
| 51 |
|
|
#include <net/route.h>
|
| 52 |
|
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#include <net/if_llc.h>
|
| 53 |
|
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#include <net/if_dl.h>
|
| 54 |
|
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#include <net/if_types.h>
|
| 55 |
|
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#include <net/ethernet.h>
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| 56 |
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|
| 57 |
|
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#ifdef INET
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| 58 |
|
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#include <netinet/in.h>
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| 59 |
|
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#include <netinet/in_var.h>
|
| 60 |
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#endif
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| 61 |
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#include <netinet/if_ether.h>
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| 62 |
|
|
|
| 63 |
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#ifdef IPX
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| 64 |
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#include <netipx/ipx.h>
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| 65 |
|
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#include <netipx/ipx_if.h>
|
| 66 |
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#endif
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| 67 |
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|
| 68 |
|
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#ifdef NS
|
| 69 |
|
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#include <netns/ns.h>
|
| 70 |
|
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#include <netns/ns_if.h>
|
| 71 |
|
|
ushort ns_nettype;
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| 72 |
|
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int ether_outputdebug = 0;
|
| 73 |
|
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int ether_inputdebug = 0;
|
| 74 |
|
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#endif
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| 75 |
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|
| 76 |
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#ifdef ISO
|
| 77 |
|
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#include <netiso/argo_debug.h>
|
| 78 |
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#include <netiso/iso.h>
|
| 79 |
|
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#include <netiso/iso_var.h>
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| 80 |
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#include <netiso/iso_snpac.h>
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| 81 |
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#endif
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| 82 |
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|
| 83 |
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/*#ifdef LLC
|
| 84 |
|
|
#include <netccitt/dll.h>
|
| 85 |
|
|
#include <netccitt/llc_var.h>
|
| 86 |
|
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#endif*/
|
| 87 |
|
|
|
| 88 |
|
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#if defined(LLC) && defined(CCITT)
|
| 89 |
|
|
extern struct ifqueue pkintrq;
|
| 90 |
|
|
#endif
|
| 91 |
|
|
|
| 92 |
|
|
#ifdef NETATALK
|
| 93 |
|
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#include <netatalk/at.h>
|
| 94 |
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#include <netatalk/at_var.h>
|
| 95 |
|
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#include <netatalk/at_extern.h>
|
| 96 |
|
|
|
| 97 |
|
|
#define llc_snap_org_code llc_un.type_snap.org_code
|
| 98 |
|
|
#define llc_snap_ether_type llc_un.type_snap.ether_type
|
| 99 |
|
|
|
| 100 |
|
|
extern u_char at_org_code[ 3 ];
|
| 101 |
|
|
extern u_char aarp_org_code[ 3 ];
|
| 102 |
|
|
#endif NETATALK
|
| 103 |
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|
|
| 104 |
|
|
u_char etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
|
| 105 |
|
|
#define senderr(e) { error = (e); goto bad;}
|
| 106 |
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|
|
| 107 |
|
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/*
|
| 108 |
|
|
* Ethernet output routine.
|
| 109 |
|
|
* Encapsulate a packet of type family for the local net.
|
| 110 |
|
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* Use trailer local net encapsulation if enough data in first
|
| 111 |
|
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* packet leaves a multiple of 512 bytes of data in remainder.
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| 112 |
|
|
* Assumes that ifp is actually pointer to arpcom structure.
|
| 113 |
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|
*/
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| 114 |
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|
int
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| 115 |
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ether_output(ifp, m0, dst, rt0)
|
| 116 |
|
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register struct ifnet *ifp;
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| 117 |
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|
struct mbuf *m0;
|
| 118 |
|
|
struct sockaddr *dst;
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| 119 |
|
|
struct rtentry *rt0;
|
| 120 |
|
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{
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| 121 |
|
|
short type;
|
| 122 |
|
|
int s, error = 0;
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| 123 |
|
|
#ifdef NS
|
| 124 |
|
|
u_char *cp
|
| 125 |
|
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register struct ifqueue *inq;
|
| 126 |
|
|
register struct mbuf *m2;
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| 127 |
|
|
#endif
|
| 128 |
|
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u_char edst[6];
|
| 129 |
|
|
register struct mbuf *m = m0;
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| 130 |
|
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register struct rtentry *rt;
|
| 131 |
|
|
struct mbuf *mcopy = (struct mbuf *)0;
|
| 132 |
|
|
register struct ether_header *eh;
|
| 133 |
|
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int off, len = m->m_pkthdr.len;
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| 134 |
|
|
struct arpcom *ac = (struct arpcom *)ifp;
|
| 135 |
|
|
#ifdef NETATALK
|
| 136 |
|
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struct at_ifaddr *aa;
|
| 137 |
|
|
#endif NETATALK
|
| 138 |
|
|
|
| 139 |
|
|
if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
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| 140 |
|
|
senderr(ENETDOWN);
|
| 141 |
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rt = rt0;
|
| 142 |
|
|
if (rt) {
|
| 143 |
|
|
if ((rt->rt_flags & RTF_UP) == 0) {
|
| 144 |
|
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rt0 = rt = rtalloc1(dst, 1, 0UL);
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| 145 |
|
|
if (rt0)
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| 146 |
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|
rt->rt_refcnt--;
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| 147 |
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else
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| 148 |
|
|
senderr(EHOSTUNREACH);
|
| 149 |
|
|
}
|
| 150 |
|
|
if (rt->rt_flags & RTF_GATEWAY) {
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| 151 |
|
|
if (rt->rt_gwroute == 0)
|
| 152 |
|
|
goto lookup;
|
| 153 |
|
|
if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
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| 154 |
|
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rtfree(rt); rt = rt0;
|
| 155 |
|
|
lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1,
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| 156 |
|
|
0UL);
|
| 157 |
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|
if ((rt = rt->rt_gwroute) == 0)
|
| 158 |
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|
senderr(EHOSTUNREACH);
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| 159 |
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|
}
|
| 160 |
|
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}
|
| 161 |
|
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if (rt->rt_flags & RTF_REJECT)
|
| 162 |
|
|
if (rt->rt_rmx.rmx_expire == 0 ||
|
| 163 |
|
|
rtems_bsdnet_seconds_since_boot() < rt->rt_rmx.rmx_expire)
|
| 164 |
|
|
senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
|
| 165 |
|
|
}
|
| 166 |
|
|
switch (dst->sa_family) {
|
| 167 |
|
|
|
| 168 |
|
|
#ifdef INET
|
| 169 |
|
|
case AF_INET:
|
| 170 |
|
|
if (!arpresolve(ac, rt, m, dst, edst, rt0))
|
| 171 |
|
|
return (0); /* if not yet resolved */
|
| 172 |
|
|
/* If broadcasting on a simplex interface, loopback a copy */
|
| 173 |
|
|
if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
|
| 174 |
|
|
mcopy = m_copy(m, 0, (int)M_COPYALL);
|
| 175 |
|
|
off = m->m_pkthdr.len - m->m_len;
|
| 176 |
|
|
type = htons(ETHERTYPE_IP);
|
| 177 |
|
|
break;
|
| 178 |
|
|
#endif
|
| 179 |
|
|
#ifdef IPX
|
| 180 |
|
|
case AF_IPX:
|
| 181 |
|
|
{
|
| 182 |
|
|
struct ifaddr *ia;
|
| 183 |
|
|
|
| 184 |
|
|
type = htons(ETHERTYPE_IPX);
|
| 185 |
|
|
bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
|
| 186 |
|
|
(caddr_t)edst, sizeof (edst));
|
| 187 |
|
|
for (ia = ifp->if_addrlist; ia != NULL; ia = ia->ifa_next)
|
| 188 |
|
|
if(ia->ifa_addr->sa_family == AF_IPX &&
|
| 189 |
|
|
!bcmp((caddr_t)edst,
|
| 190 |
|
|
(caddr_t)&((struct ipx_ifaddr *)ia)->ia_addr.sipx_addr.x_host,
|
| 191 |
|
|
sizeof(edst)))
|
| 192 |
|
|
return (looutput(ifp, m, dst, rt));
|
| 193 |
|
|
/* If broadcasting on a simplex interface, loopback a copy */
|
| 194 |
|
|
if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
|
| 195 |
|
|
mcopy = m_copy(m, 0, (int)M_COPYALL);
|
| 196 |
|
|
break;
|
| 197 |
|
|
}
|
| 198 |
|
|
#endif
|
| 199 |
|
|
#ifdef NETATALK
|
| 200 |
|
|
case AF_APPLETALK:
|
| 201 |
|
|
{
|
| 202 |
|
|
struct sockaddr_at *sat = (struct sockaddr_at *)dst;
|
| 203 |
|
|
|
| 204 |
|
|
/*
|
| 205 |
|
|
* super hack..
|
| 206 |
|
|
* Most of this loopback code should move into the appletalk
|
| 207 |
|
|
* code, but it's here for now.. remember to move it! [JRE]
|
| 208 |
|
|
* This may not get the same interface we started with
|
| 209 |
|
|
* fix asap. XXX
|
| 210 |
|
|
*/
|
| 211 |
|
|
aa = at_ifawithnet( sat );
|
| 212 |
|
|
if (aa == NULL) {
|
| 213 |
|
|
goto bad;
|
| 214 |
|
|
}
|
| 215 |
|
|
if( aa->aa_ifa.ifa_ifp != ifp ) {
|
| 216 |
|
|
(*aa->aa_ifa.ifa_ifp->if_output)(aa->aa_ifa.ifa_ifp,
|
| 217 |
|
|
m,dst,rt);
|
| 218 |
|
|
}
|
| 219 |
|
|
if (((sat->sat_addr.s_net == ATADDR_ANYNET)
|
| 220 |
|
|
&& (sat->sat_addr.s_node == ATADDR_ANYNODE))
|
| 221 |
|
|
|| ((sat->sat_addr.s_net == aa->aa_addr.sat_addr.s_net )
|
| 222 |
|
|
&& (sat->sat_addr.s_node == aa->aa_addr.sat_addr.s_node))) {
|
| 223 |
|
|
(void) looutput(ifp, m, dst, rt);
|
| 224 |
|
|
return(0);
|
| 225 |
|
|
}
|
| 226 |
|
|
|
| 227 |
|
|
if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst)) {
|
| 228 |
|
|
#ifdef NETATALKDEBUG
|
| 229 |
|
|
extern char *prsockaddr(struct sockaddr *);
|
| 230 |
|
|
printf("aarpresolv: failed for %s\n", prsockaddr(dst));
|
| 231 |
|
|
#endif NETATALKDEBUG
|
| 232 |
|
|
return (0);
|
| 233 |
|
|
}
|
| 234 |
|
|
|
| 235 |
|
|
/*
|
| 236 |
|
|
* If broadcasting on a simplex interface, loopback a copy
|
| 237 |
|
|
*/
|
| 238 |
|
|
if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
|
| 239 |
|
|
mcopy = m_copy(m, 0, (int)M_COPYALL);
|
| 240 |
|
|
}
|
| 241 |
|
|
/*
|
| 242 |
|
|
* In the phase 2 case, we need to prepend an mbuf for the llc header.
|
| 243 |
|
|
* Since we must preserve the value of m, which is passed to us by
|
| 244 |
|
|
* value, we m_copy() the first mbuf, and use it for our llc header.
|
| 245 |
|
|
*/
|
| 246 |
|
|
if ( aa->aa_flags & AFA_PHASE2 ) {
|
| 247 |
|
|
struct llc llc;
|
| 248 |
|
|
|
| 249 |
|
|
M_PREPEND(m, sizeof(struct llc), M_WAIT);
|
| 250 |
|
|
len += sizeof(struct llc);
|
| 251 |
|
|
llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
|
| 252 |
|
|
llc.llc_control = LLC_UI;
|
| 253 |
|
|
bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code));
|
| 254 |
|
|
llc.llc_snap_ether_type = htons( ETHERTYPE_AT );
|
| 255 |
|
|
bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc));
|
| 256 |
|
|
type = htons(m->m_pkthdr.len);
|
| 257 |
|
|
} else {
|
| 258 |
|
|
type = htons(ETHERTYPE_AT);
|
| 259 |
|
|
}
|
| 260 |
|
|
break;
|
| 261 |
|
|
#endif NETATALK
|
| 262 |
|
|
#ifdef NS
|
| 263 |
|
|
case AF_NS:
|
| 264 |
|
|
switch(ns_nettype){
|
| 265 |
|
|
default:
|
| 266 |
|
|
case 0x8137: /* Novell Ethernet_II Ethernet TYPE II */
|
| 267 |
|
|
type = 0x8137;
|
| 268 |
|
|
break;
|
| 269 |
|
|
case 0x0: /* Novell 802.3 */
|
| 270 |
|
|
type = htons( m->m_pkthdr.len);
|
| 271 |
|
|
break;
|
| 272 |
|
|
case 0xe0e0: /* Novell 802.2 and Token-Ring */
|
| 273 |
|
|
M_PREPEND(m, 3, M_WAIT);
|
| 274 |
|
|
type = htons( m->m_pkthdr.len);
|
| 275 |
|
|
cp = mtod(m, u_char *);
|
| 276 |
|
|
*cp++ = 0xE0;
|
| 277 |
|
|
*cp++ = 0xE0;
|
| 278 |
|
|
*cp++ = 0x03;
|
| 279 |
|
|
break;
|
| 280 |
|
|
}
|
| 281 |
|
|
bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
|
| 282 |
|
|
(caddr_t)edst, sizeof (edst));
|
| 283 |
|
|
if (!bcmp((caddr_t)edst, (caddr_t)&ns_thishost, sizeof(edst))){
|
| 284 |
|
|
m->m_pkthdr.rcvif = ifp;
|
| 285 |
|
|
schednetisr(NETISR_NS);
|
| 286 |
|
|
inq = &nsintrq;
|
| 287 |
|
|
s = splimp();
|
| 288 |
|
|
if (IF_QFULL(inq)) {
|
| 289 |
|
|
IF_DROP(inq);
|
| 290 |
|
|
m_freem(m);
|
| 291 |
|
|
} else
|
| 292 |
|
|
IF_ENQUEUE(inq, m);
|
| 293 |
|
|
splx(s);
|
| 294 |
|
|
return (error);
|
| 295 |
|
|
}
|
| 296 |
|
|
if (!bcmp((caddr_t)edst, (caddr_t)&ns_broadhost, sizeof(edst))){
|
| 297 |
|
|
m2 = m_copy(m, 0, (int)M_COPYALL);
|
| 298 |
|
|
m2->m_pkthdr.rcvif = ifp;
|
| 299 |
|
|
schednetisr(NETISR_NS);
|
| 300 |
|
|
inq = &nsintrq;
|
| 301 |
|
|
s = splimp();
|
| 302 |
|
|
if (IF_QFULL(inq)) {
|
| 303 |
|
|
IF_DROP(inq);
|
| 304 |
|
|
m_freem(m2);
|
| 305 |
|
|
} else
|
| 306 |
|
|
IF_ENQUEUE(inq, m2);
|
| 307 |
|
|
splx(s);
|
| 308 |
|
|
}
|
| 309 |
|
|
/* If broadcasting on a simplex interface, loopback a copy */
|
| 310 |
|
|
if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)){
|
| 311 |
|
|
mcopy = m_copy(m, 0, (int)M_COPYALL);
|
| 312 |
|
|
}
|
| 313 |
|
|
break;
|
| 314 |
|
|
#endif /* NS */
|
| 315 |
|
|
#ifdef ISO
|
| 316 |
|
|
case AF_ISO: {
|
| 317 |
|
|
int snpalen;
|
| 318 |
|
|
struct llc *l;
|
| 319 |
|
|
register struct sockaddr_dl *sdl;
|
| 320 |
|
|
|
| 321 |
|
|
if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway) &&
|
| 322 |
|
|
sdl->sdl_family == AF_LINK && sdl->sdl_alen > 0) {
|
| 323 |
|
|
bcopy(LLADDR(sdl), (caddr_t)edst, sizeof(edst));
|
| 324 |
|
|
} else if (error =
|
| 325 |
|
|
iso_snparesolve(ifp, (struct sockaddr_iso *)dst,
|
| 326 |
|
|
(char *)edst, &snpalen))
|
| 327 |
|
|
goto bad; /* Not Resolved */
|
| 328 |
|
|
/* If broadcasting on a simplex interface, loopback a copy */
|
| 329 |
|
|
if (*edst & 1)
|
| 330 |
|
|
m->m_flags |= (M_BCAST|M_MCAST);
|
| 331 |
|
|
if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX) &&
|
| 332 |
|
|
(mcopy = m_copy(m, 0, (int)M_COPYALL))) {
|
| 333 |
|
|
M_PREPEND(mcopy, sizeof (*eh), M_DONTWAIT);
|
| 334 |
|
|
if (mcopy) {
|
| 335 |
|
|
eh = mtod(mcopy, struct ether_header *);
|
| 336 |
|
|
bcopy((caddr_t)edst,
|
| 337 |
|
|
(caddr_t)eh->ether_dhost, sizeof (edst));
|
| 338 |
|
|
bcopy((caddr_t)ac->ac_enaddr,
|
| 339 |
|
|
(caddr_t)eh->ether_shost, sizeof (edst));
|
| 340 |
|
|
}
|
| 341 |
|
|
}
|
| 342 |
|
|
M_PREPEND(m, 3, M_DONTWAIT);
|
| 343 |
|
|
if (m == NULL)
|
| 344 |
|
|
return (0);
|
| 345 |
|
|
type = htons(m->m_pkthdr.len);
|
| 346 |
|
|
l = mtod(m, struct llc *);
|
| 347 |
|
|
l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP;
|
| 348 |
|
|
l->llc_control = LLC_UI;
|
| 349 |
|
|
len += 3;
|
| 350 |
|
|
IFDEBUG(D_ETHER)
|
| 351 |
|
|
int i;
|
| 352 |
|
|
printf("unoutput: sending pkt to: ");
|
| 353 |
|
|
for (i=0; i<6; i++)
|
| 354 |
|
|
printf("%x ", edst[i] & 0xff);
|
| 355 |
|
|
printf("\n");
|
| 356 |
|
|
ENDDEBUG
|
| 357 |
|
|
} break;
|
| 358 |
|
|
#endif /* ISO */
|
| 359 |
|
|
#ifdef LLC
|
| 360 |
|
|
/* case AF_NSAP: */
|
| 361 |
|
|
case AF_CCITT: {
|
| 362 |
|
|
register struct sockaddr_dl *sdl =
|
| 363 |
|
|
(struct sockaddr_dl *) rt -> rt_gateway;
|
| 364 |
|
|
|
| 365 |
|
|
if (sdl && sdl->sdl_family == AF_LINK
|
| 366 |
|
|
&& sdl->sdl_alen > 0) {
|
| 367 |
|
|
bcopy(LLADDR(sdl), (char *)edst,
|
| 368 |
|
|
sizeof(edst));
|
| 369 |
|
|
} else goto bad; /* Not a link interface ? Funny ... */
|
| 370 |
|
|
if ((ifp->if_flags & IFF_SIMPLEX) && (*edst & 1) &&
|
| 371 |
|
|
(mcopy = m_copy(m, 0, (int)M_COPYALL))) {
|
| 372 |
|
|
M_PREPEND(mcopy, sizeof (*eh), M_DONTWAIT);
|
| 373 |
|
|
if (mcopy) {
|
| 374 |
|
|
eh = mtod(mcopy, struct ether_header *);
|
| 375 |
|
|
bcopy((caddr_t)edst,
|
| 376 |
|
|
(caddr_t)eh->ether_dhost, sizeof (edst));
|
| 377 |
|
|
bcopy((caddr_t)ac->ac_enaddr,
|
| 378 |
|
|
(caddr_t)eh->ether_shost, sizeof (edst));
|
| 379 |
|
|
}
|
| 380 |
|
|
}
|
| 381 |
|
|
type = htons(m->m_pkthdr.len);
|
| 382 |
|
|
#ifdef LLC_DEBUG
|
| 383 |
|
|
{
|
| 384 |
|
|
int i;
|
| 385 |
|
|
register struct llc *l = mtod(m, struct llc *);
|
| 386 |
|
|
|
| 387 |
|
|
printf("ether_output: sending LLC2 pkt to: ");
|
| 388 |
|
|
for (i=0; i<6; i++)
|
| 389 |
|
|
printf("%x ", edst[i] & 0xff);
|
| 390 |
|
|
printf(" len 0x%x dsap 0x%x ssap 0x%x control 0x%x\n",
|
| 391 |
|
|
type & 0xff, l->llc_dsap & 0xff, l->llc_ssap &0xff,
|
| 392 |
|
|
l->llc_control & 0xff);
|
| 393 |
|
|
|
| 394 |
|
|
}
|
| 395 |
|
|
#endif /* LLC_DEBUG */
|
| 396 |
|
|
} break;
|
| 397 |
|
|
#endif /* LLC */
|
| 398 |
|
|
|
| 399 |
|
|
case AF_UNSPEC:
|
| 400 |
|
|
eh = (struct ether_header *)dst->sa_data;
|
| 401 |
|
|
(void)memcpy(edst, eh->ether_dhost, sizeof (edst));
|
| 402 |
|
|
type = eh->ether_type;
|
| 403 |
|
|
break;
|
| 404 |
|
|
|
| 405 |
|
|
default:
|
| 406 |
|
|
printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
|
| 407 |
|
|
dst->sa_family);
|
| 408 |
|
|
senderr(EAFNOSUPPORT);
|
| 409 |
|
|
}
|
| 410 |
|
|
|
| 411 |
|
|
|
| 412 |
|
|
if (mcopy)
|
| 413 |
|
|
(void) looutput(ifp, mcopy, dst, rt);
|
| 414 |
|
|
/*
|
| 415 |
|
|
* Add local net header. If no space in first mbuf,
|
| 416 |
|
|
* allocate another.
|
| 417 |
|
|
*/
|
| 418 |
|
|
M_PREPEND(m, sizeof (struct ether_header), M_DONTWAIT);
|
| 419 |
|
|
if (m == 0)
|
| 420 |
|
|
senderr(ENOBUFS);
|
| 421 |
|
|
eh = mtod(m, struct ether_header *);
|
| 422 |
|
|
(void)memcpy(&eh->ether_type, &type,
|
| 423 |
|
|
sizeof(eh->ether_type));
|
| 424 |
|
|
(void)memcpy(eh->ether_dhost, edst, sizeof (edst));
|
| 425 |
|
|
(void)memcpy(eh->ether_shost, ac->ac_enaddr,
|
| 426 |
|
|
sizeof(eh->ether_shost));
|
| 427 |
|
|
s = splimp();
|
| 428 |
|
|
/*
|
| 429 |
|
|
* Queue message on interface, and start output if interface
|
| 430 |
|
|
* not yet active.
|
| 431 |
|
|
*/
|
| 432 |
|
|
if (IF_QFULL(&ifp->if_snd)) {
|
| 433 |
|
|
IF_DROP(&ifp->if_snd);
|
| 434 |
|
|
splx(s);
|
| 435 |
|
|
senderr(ENOBUFS);
|
| 436 |
|
|
}
|
| 437 |
|
|
IF_ENQUEUE(&ifp->if_snd, m);
|
| 438 |
|
|
if ((ifp->if_flags & IFF_OACTIVE) == 0)
|
| 439 |
|
|
(*ifp->if_start)(ifp);
|
| 440 |
|
|
splx(s);
|
| 441 |
|
|
ifp->if_obytes += len + sizeof (struct ether_header);
|
| 442 |
|
|
if (m->m_flags & M_MCAST)
|
| 443 |
|
|
ifp->if_omcasts++;
|
| 444 |
|
|
return (error);
|
| 445 |
|
|
|
| 446 |
|
|
bad:
|
| 447 |
|
|
if (m)
|
| 448 |
|
|
m_freem(m);
|
| 449 |
|
|
return (error);
|
| 450 |
|
|
}
|
| 451 |
|
|
|
| 452 |
|
|
/*
|
| 453 |
|
|
* Process a received Ethernet packet;
|
| 454 |
|
|
* the packet is in the mbuf chain m without
|
| 455 |
|
|
* the ether header, which is provided separately.
|
| 456 |
|
|
*/
|
| 457 |
|
|
void
|
| 458 |
|
|
ether_input(ifp, eh, m)
|
| 459 |
|
|
struct ifnet *ifp;
|
| 460 |
|
|
register struct ether_header *eh;
|
| 461 |
|
|
struct mbuf *m;
|
| 462 |
|
|
{
|
| 463 |
|
|
register struct ifqueue *inq;
|
| 464 |
|
|
u_short ether_type;
|
| 465 |
|
|
#ifdef NS
|
| 466 |
|
|
u_short *checksum;
|
| 467 |
|
|
#endif
|
| 468 |
|
|
int s;
|
| 469 |
|
|
#if defined (ISO) || defined (LLC) || defined(NETATALK)
|
| 470 |
|
|
register struct llc *l;
|
| 471 |
|
|
#endif
|
| 472 |
|
|
|
| 473 |
|
|
if ((ifp->if_flags & IFF_UP) == 0) {
|
| 474 |
|
|
m_freem(m);
|
| 475 |
|
|
return;
|
| 476 |
|
|
}
|
| 477 |
|
|
ifp->if_ibytes += m->m_pkthdr.len + sizeof (*eh);
|
| 478 |
|
|
if (bcmp((caddr_t)etherbroadcastaddr, (caddr_t)eh->ether_dhost,
|
| 479 |
|
|
sizeof(etherbroadcastaddr)) == 0)
|
| 480 |
|
|
m->m_flags |= M_BCAST;
|
| 481 |
|
|
else if (eh->ether_dhost[0] & 1)
|
| 482 |
|
|
m->m_flags |= M_MCAST;
|
| 483 |
|
|
if (m->m_flags & (M_BCAST|M_MCAST))
|
| 484 |
|
|
ifp->if_imcasts++;
|
| 485 |
|
|
|
| 486 |
|
|
/*
|
| 487 |
|
|
* RTEMS addition -- allow application to `tap into'
|
| 488 |
|
|
* the incoming packet stream.
|
| 489 |
|
|
*/
|
| 490 |
|
|
if (ifp->if_tap && (*ifp->if_tap)(ifp, eh, m)) {
|
| 491 |
|
|
m_freem(m);
|
| 492 |
|
|
return;
|
| 493 |
|
|
}
|
| 494 |
|
|
|
| 495 |
|
|
ether_type = ntohs(eh->ether_type);
|
| 496 |
|
|
|
| 497 |
|
|
switch (ether_type) {
|
| 498 |
|
|
#ifdef INET
|
| 499 |
|
|
case ETHERTYPE_IP:
|
| 500 |
|
|
schednetisr(NETISR_IP);
|
| 501 |
|
|
inq = &ipintrq;
|
| 502 |
|
|
break;
|
| 503 |
|
|
|
| 504 |
|
|
case ETHERTYPE_ARP:
|
| 505 |
|
|
schednetisr(NETISR_ARP);
|
| 506 |
|
|
inq = &arpintrq;
|
| 507 |
|
|
break;
|
| 508 |
|
|
#endif
|
| 509 |
|
|
#ifdef IPX
|
| 510 |
|
|
case ETHERTYPE_IPX:
|
| 511 |
|
|
schednetisr(NETISR_IPX);
|
| 512 |
|
|
inq = &ipxintrq;
|
| 513 |
|
|
break;
|
| 514 |
|
|
#endif
|
| 515 |
|
|
#ifdef NS
|
| 516 |
|
|
case 0x8137: /* Novell Ethernet_II Ethernet TYPE II */
|
| 517 |
|
|
schednetisr(NETISR_NS);
|
| 518 |
|
|
inq = &nsintrq;
|
| 519 |
|
|
break;
|
| 520 |
|
|
|
| 521 |
|
|
#endif /* NS */
|
| 522 |
|
|
#ifdef NETATALK
|
| 523 |
|
|
case ETHERTYPE_AT:
|
| 524 |
|
|
schednetisr(NETISR_ATALK);
|
| 525 |
|
|
inq = &atintrq1;
|
| 526 |
|
|
break;
|
| 527 |
|
|
case ETHERTYPE_AARP:
|
| 528 |
|
|
/* probably this should be done with a NETISR as well */
|
| 529 |
|
|
aarpinput((struct arpcom *)ifp, m); /* XXX */
|
| 530 |
|
|
return;
|
| 531 |
|
|
#endif NETATALK
|
| 532 |
|
|
default:
|
| 533 |
|
|
#ifdef NS
|
| 534 |
|
|
checksum = mtod(m, ushort *);
|
| 535 |
|
|
/* Novell 802.3 */
|
| 536 |
|
|
if ((ether_type <= ETHERMTU) &&
|
| 537 |
|
|
((*checksum == 0xffff) || (*checksum == 0xE0E0))){
|
| 538 |
|
|
if(*checksum == 0xE0E0) {
|
| 539 |
|
|
m->m_pkthdr.len -= 3;
|
| 540 |
|
|
m->m_len -= 3;
|
| 541 |
|
|
m->m_data += 3;
|
| 542 |
|
|
}
|
| 543 |
|
|
schednetisr(NETISR_NS);
|
| 544 |
|
|
inq = &nsintrq;
|
| 545 |
|
|
break;
|
| 546 |
|
|
}
|
| 547 |
|
|
#endif /* NS */
|
| 548 |
|
|
#if defined (ISO) || defined (LLC) || defined(NETATALK)
|
| 549 |
|
|
if (ether_type > ETHERMTU)
|
| 550 |
|
|
goto dropanyway;
|
| 551 |
|
|
l = mtod(m, struct llc *);
|
| 552 |
|
|
switch (l->llc_dsap) {
|
| 553 |
|
|
#ifdef NETATALK
|
| 554 |
|
|
case LLC_SNAP_LSAP:
|
| 555 |
|
|
switch (l->llc_control) {
|
| 556 |
|
|
case LLC_UI:
|
| 557 |
|
|
if (l->llc_ssap != LLC_SNAP_LSAP)
|
| 558 |
|
|
goto dropanyway;
|
| 559 |
|
|
|
| 560 |
|
|
if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code,
|
| 561 |
|
|
sizeof(at_org_code)) == 0 &&
|
| 562 |
|
|
ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) {
|
| 563 |
|
|
inq = &atintrq2;
|
| 564 |
|
|
m_adj( m, sizeof( struct llc ));
|
| 565 |
|
|
schednetisr(NETISR_ATALK);
|
| 566 |
|
|
break;
|
| 567 |
|
|
}
|
| 568 |
|
|
|
| 569 |
|
|
if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code,
|
| 570 |
|
|
sizeof(aarp_org_code)) == 0 &&
|
| 571 |
|
|
ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) {
|
| 572 |
|
|
m_adj( m, sizeof( struct llc ));
|
| 573 |
|
|
aarpinput((struct arpcom *)ifp, m); /* XXX */
|
| 574 |
|
|
return;
|
| 575 |
|
|
}
|
| 576 |
|
|
|
| 577 |
|
|
default:
|
| 578 |
|
|
goto dropanyway;
|
| 579 |
|
|
}
|
| 580 |
|
|
break;
|
| 581 |
|
|
#endif NETATALK
|
| 582 |
|
|
#ifdef ISO
|
| 583 |
|
|
case LLC_ISO_LSAP:
|
| 584 |
|
|
switch (l->llc_control) {
|
| 585 |
|
|
case LLC_UI:
|
| 586 |
|
|
/* LLC_UI_P forbidden in class 1 service */
|
| 587 |
|
|
if ((l->llc_dsap == LLC_ISO_LSAP) &&
|
| 588 |
|
|
(l->llc_ssap == LLC_ISO_LSAP)) {
|
| 589 |
|
|
/* LSAP for ISO */
|
| 590 |
|
|
if (m->m_pkthdr.len > ether_type)
|
| 591 |
|
|
m_adj(m, ether_type - m->m_pkthdr.len);
|
| 592 |
|
|
m->m_data += 3; /* XXX */
|
| 593 |
|
|
m->m_len -= 3; /* XXX */
|
| 594 |
|
|
m->m_pkthdr.len -= 3; /* XXX */
|
| 595 |
|
|
M_PREPEND(m, sizeof *eh, M_DONTWAIT);
|
| 596 |
|
|
if (m == 0)
|
| 597 |
|
|
return;
|
| 598 |
|
|
*mtod(m, struct ether_header *) = *eh;
|
| 599 |
|
|
IFDEBUG(D_ETHER)
|
| 600 |
|
|
printf("clnp packet");
|
| 601 |
|
|
ENDDEBUG
|
| 602 |
|
|
schednetisr(NETISR_ISO);
|
| 603 |
|
|
inq = &clnlintrq;
|
| 604 |
|
|
break;
|
| 605 |
|
|
}
|
| 606 |
|
|
goto dropanyway;
|
| 607 |
|
|
|
| 608 |
|
|
case LLC_XID:
|
| 609 |
|
|
case LLC_XID_P:
|
| 610 |
|
|
if(m->m_len < 6)
|
| 611 |
|
|
goto dropanyway;
|
| 612 |
|
|
l->llc_window = 0;
|
| 613 |
|
|
l->llc_fid = 9;
|
| 614 |
|
|
l->llc_class = 1;
|
| 615 |
|
|
l->llc_dsap = l->llc_ssap = 0;
|
| 616 |
|
|
/* Fall through to */
|
| 617 |
|
|
case LLC_TEST:
|
| 618 |
|
|
case LLC_TEST_P:
|
| 619 |
|
|
{
|
| 620 |
|
|
struct sockaddr sa;
|
| 621 |
|
|
register struct ether_header *eh2;
|
| 622 |
|
|
int i;
|
| 623 |
|
|
u_char c = l->llc_dsap;
|
| 624 |
|
|
|
| 625 |
|
|
l->llc_dsap = l->llc_ssap;
|
| 626 |
|
|
l->llc_ssap = c;
|
| 627 |
|
|
if (m->m_flags & (M_BCAST | M_MCAST))
|
| 628 |
|
|
bcopy((caddr_t)ac->ac_enaddr,
|
| 629 |
|
|
(caddr_t)eh->ether_dhost, 6);
|
| 630 |
|
|
sa.sa_family = AF_UNSPEC;
|
| 631 |
|
|
sa.sa_len = sizeof(sa);
|
| 632 |
|
|
eh2 = (struct ether_header *)sa.sa_data;
|
| 633 |
|
|
for (i = 0; i < 6; i++) {
|
| 634 |
|
|
eh2->ether_shost[i] = c = eh->ether_dhost[i];
|
| 635 |
|
|
eh2->ether_dhost[i] =
|
| 636 |
|
|
eh->ether_dhost[i] = eh->ether_shost[i];
|
| 637 |
|
|
eh->ether_shost[i] = c;
|
| 638 |
|
|
}
|
| 639 |
|
|
ifp->if_output(ifp, m, &sa, NULL);
|
| 640 |
|
|
return;
|
| 641 |
|
|
}
|
| 642 |
|
|
default:
|
| 643 |
|
|
m_freem(m);
|
| 644 |
|
|
return;
|
| 645 |
|
|
}
|
| 646 |
|
|
break;
|
| 647 |
|
|
#endif /* ISO */
|
| 648 |
|
|
#ifdef LLC
|
| 649 |
|
|
case LLC_X25_LSAP:
|
| 650 |
|
|
{
|
| 651 |
|
|
if (m->m_pkthdr.len > ether_type)
|
| 652 |
|
|
m_adj(m, ether_type - m->m_pkthdr.len);
|
| 653 |
|
|
M_PREPEND(m, sizeof(struct sdl_hdr) , M_DONTWAIT);
|
| 654 |
|
|
if (m == 0)
|
| 655 |
|
|
return;
|
| 656 |
|
|
if ( !sdl_sethdrif(ifp, eh->ether_shost, LLC_X25_LSAP,
|
| 657 |
|
|
eh->ether_dhost, LLC_X25_LSAP, 6,
|
| 658 |
|
|
mtod(m, struct sdl_hdr *)))
|
| 659 |
|
|
panic("ETHER cons addr failure");
|
| 660 |
|
|
mtod(m, struct sdl_hdr *)->sdlhdr_len = ether_type;
|
| 661 |
|
|
#ifdef LLC_DEBUG
|
| 662 |
|
|
printf("llc packet\n");
|
| 663 |
|
|
#endif /* LLC_DEBUG */
|
| 664 |
|
|
schednetisr(NETISR_CCITT);
|
| 665 |
|
|
inq = &llcintrq;
|
| 666 |
|
|
break;
|
| 667 |
|
|
}
|
| 668 |
|
|
#endif /* LLC */
|
| 669 |
|
|
dropanyway:
|
| 670 |
|
|
default:
|
| 671 |
|
|
m_freem(m);
|
| 672 |
|
|
return;
|
| 673 |
|
|
}
|
| 674 |
|
|
#else /* ISO || LLC || NETATALK */
|
| 675 |
|
|
m_freem(m);
|
| 676 |
|
|
return;
|
| 677 |
|
|
#endif /* ISO || LLC || NETATALK */
|
| 678 |
|
|
}
|
| 679 |
|
|
|
| 680 |
|
|
s = splimp();
|
| 681 |
|
|
if (IF_QFULL(inq)) {
|
| 682 |
|
|
IF_DROP(inq);
|
| 683 |
|
|
m_freem(m);
|
| 684 |
|
|
} else
|
| 685 |
|
|
IF_ENQUEUE(inq, m);
|
| 686 |
|
|
splx(s);
|
| 687 |
|
|
}
|
| 688 |
|
|
|
| 689 |
|
|
/*
|
| 690 |
|
|
* Perform common duties while attaching to interface list
|
| 691 |
|
|
*/
|
| 692 |
|
|
void
|
| 693 |
|
|
ether_ifattach(ifp)
|
| 694 |
|
|
register struct ifnet *ifp;
|
| 695 |
|
|
{
|
| 696 |
|
|
register struct ifaddr *ifa;
|
| 697 |
|
|
register struct sockaddr_dl *sdl;
|
| 698 |
|
|
|
| 699 |
|
|
ifp->if_type = IFT_ETHER;
|
| 700 |
|
|
ifp->if_addrlen = 6;
|
| 701 |
|
|
ifp->if_hdrlen = 14;
|
| 702 |
|
|
ifp->if_mtu = ETHERMTU;
|
| 703 |
|
|
if (ifp->if_baudrate == 0)
|
| 704 |
|
|
ifp->if_baudrate = 10000000;
|
| 705 |
|
|
for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next)
|
| 706 |
|
|
if ((sdl = (struct sockaddr_dl *)ifa->ifa_addr) &&
|
| 707 |
|
|
sdl->sdl_family == AF_LINK) {
|
| 708 |
|
|
sdl->sdl_type = IFT_ETHER;
|
| 709 |
|
|
sdl->sdl_alen = ifp->if_addrlen;
|
| 710 |
|
|
bcopy((caddr_t)((struct arpcom *)ifp)->ac_enaddr,
|
| 711 |
|
|
LLADDR(sdl), ifp->if_addrlen);
|
| 712 |
|
|
break;
|
| 713 |
|
|
}
|
| 714 |
|
|
}
|
| 715 |
|
|
|
| 716 |
|
|
static u_char ether_ipmulticast_min[6] =
|
| 717 |
|
|
{ 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
|
| 718 |
|
|
static u_char ether_ipmulticast_max[6] =
|
| 719 |
|
|
{ 0x01, 0x00, 0x5e, 0x7f, 0xff, 0xff };
|
| 720 |
|
|
/*
|
| 721 |
|
|
* Add an Ethernet multicast address or range of addresses to the list for a
|
| 722 |
|
|
* given interface.
|
| 723 |
|
|
*/
|
| 724 |
|
|
int
|
| 725 |
|
|
ether_addmulti(ifr, ac)
|
| 726 |
|
|
struct ifreq *ifr;
|
| 727 |
|
|
register struct arpcom *ac;
|
| 728 |
|
|
{
|
| 729 |
|
|
register struct ether_multi *enm;
|
| 730 |
|
|
struct sockaddr_in *sin;
|
| 731 |
|
|
u_char addrlo[6];
|
| 732 |
|
|
u_char addrhi[6];
|
| 733 |
|
|
int set_allmulti = 0;
|
| 734 |
|
|
int s = splimp();
|
| 735 |
|
|
|
| 736 |
|
|
switch (ifr->ifr_addr.sa_family) {
|
| 737 |
|
|
|
| 738 |
|
|
case AF_UNSPEC:
|
| 739 |
|
|
bcopy(ifr->ifr_addr.sa_data, addrlo, 6);
|
| 740 |
|
|
bcopy(addrlo, addrhi, 6);
|
| 741 |
|
|
break;
|
| 742 |
|
|
|
| 743 |
|
|
#ifdef INET
|
| 744 |
|
|
case AF_INET:
|
| 745 |
|
|
sin = (struct sockaddr_in *)&(ifr->ifr_addr);
|
| 746 |
|
|
if (sin->sin_addr.s_addr == INADDR_ANY) {
|
| 747 |
|
|
/*
|
| 748 |
|
|
* An IP address of INADDR_ANY means listen to all
|
| 749 |
|
|
* of the Ethernet multicast addresses used for IP.
|
| 750 |
|
|
* (This is for the sake of IP multicast routers.)
|
| 751 |
|
|
*/
|
| 752 |
|
|
bcopy(ether_ipmulticast_min, addrlo, 6);
|
| 753 |
|
|
bcopy(ether_ipmulticast_max, addrhi, 6);
|
| 754 |
|
|
set_allmulti = 1;
|
| 755 |
|
|
}
|
| 756 |
|
|
else {
|
| 757 |
|
|
ETHER_MAP_IP_MULTICAST(&sin->sin_addr, addrlo);
|
| 758 |
|
|
bcopy(addrlo, addrhi, 6);
|
| 759 |
|
|
}
|
| 760 |
|
|
break;
|
| 761 |
|
|
#endif
|
| 762 |
|
|
|
| 763 |
|
|
default:
|
| 764 |
|
|
splx(s);
|
| 765 |
|
|
return (EAFNOSUPPORT);
|
| 766 |
|
|
}
|
| 767 |
|
|
|
| 768 |
|
|
/*
|
| 769 |
|
|
* Verify that we have valid Ethernet multicast addresses.
|
| 770 |
|
|
*/
|
| 771 |
|
|
if ((addrlo[0] & 0x01) != 1 || (addrhi[0] & 0x01) != 1) {
|
| 772 |
|
|
splx(s);
|
| 773 |
|
|
return (EINVAL);
|
| 774 |
|
|
}
|
| 775 |
|
|
/*
|
| 776 |
|
|
* See if the address range is already in the list.
|
| 777 |
|
|
*/
|
| 778 |
|
|
ETHER_LOOKUP_MULTI(addrlo, addrhi, ac, enm);
|
| 779 |
|
|
if (enm != NULL) {
|
| 780 |
|
|
/*
|
| 781 |
|
|
* Found it; just increment the reference count.
|
| 782 |
|
|
*/
|
| 783 |
|
|
++enm->enm_refcount;
|
| 784 |
|
|
splx(s);
|
| 785 |
|
|
return (0);
|
| 786 |
|
|
}
|
| 787 |
|
|
/*
|
| 788 |
|
|
* New address or range; malloc a new multicast record
|
| 789 |
|
|
* and link it into the interface's multicast list.
|
| 790 |
|
|
*/
|
| 791 |
|
|
enm = (struct ether_multi *)malloc(sizeof(*enm), M_IFMADDR, M_NOWAIT);
|
| 792 |
|
|
if (enm == NULL) {
|
| 793 |
|
|
splx(s);
|
| 794 |
|
|
return (ENOBUFS);
|
| 795 |
|
|
}
|
| 796 |
|
|
bcopy(addrlo, enm->enm_addrlo, 6);
|
| 797 |
|
|
bcopy(addrhi, enm->enm_addrhi, 6);
|
| 798 |
|
|
enm->enm_ac = ac;
|
| 799 |
|
|
enm->enm_refcount = 1;
|
| 800 |
|
|
enm->enm_next = ac->ac_multiaddrs;
|
| 801 |
|
|
ac->ac_multiaddrs = enm;
|
| 802 |
|
|
ac->ac_multicnt++;
|
| 803 |
|
|
splx(s);
|
| 804 |
|
|
if (set_allmulti)
|
| 805 |
|
|
ac->ac_if.if_flags |= IFF_ALLMULTI;
|
| 806 |
|
|
|
| 807 |
|
|
/*
|
| 808 |
|
|
* Return ENETRESET to inform the driver that the list has changed
|
| 809 |
|
|
* and its reception filter should be adjusted accordingly.
|
| 810 |
|
|
*/
|
| 811 |
|
|
return (ENETRESET);
|
| 812 |
|
|
}
|
| 813 |
|
|
|
| 814 |
|
|
/*
|
| 815 |
|
|
* Delete a multicast address record.
|
| 816 |
|
|
*/
|
| 817 |
|
|
int
|
| 818 |
|
|
ether_delmulti(ifr, ac)
|
| 819 |
|
|
struct ifreq *ifr;
|
| 820 |
|
|
register struct arpcom *ac;
|
| 821 |
|
|
{
|
| 822 |
|
|
register struct ether_multi *enm;
|
| 823 |
|
|
register struct ether_multi **p;
|
| 824 |
|
|
struct sockaddr_in *sin;
|
| 825 |
|
|
u_char addrlo[6];
|
| 826 |
|
|
u_char addrhi[6];
|
| 827 |
|
|
int unset_allmulti = 0;
|
| 828 |
|
|
int s = splimp();
|
| 829 |
|
|
|
| 830 |
|
|
switch (ifr->ifr_addr.sa_family) {
|
| 831 |
|
|
|
| 832 |
|
|
case AF_UNSPEC:
|
| 833 |
|
|
bcopy(ifr->ifr_addr.sa_data, addrlo, 6);
|
| 834 |
|
|
bcopy(addrlo, addrhi, 6);
|
| 835 |
|
|
break;
|
| 836 |
|
|
|
| 837 |
|
|
#ifdef INET
|
| 838 |
|
|
case AF_INET:
|
| 839 |
|
|
sin = (struct sockaddr_in *)&(ifr->ifr_addr);
|
| 840 |
|
|
if (sin->sin_addr.s_addr == INADDR_ANY) {
|
| 841 |
|
|
/*
|
| 842 |
|
|
* An IP address of INADDR_ANY means stop listening
|
| 843 |
|
|
* to the range of Ethernet multicast addresses used
|
| 844 |
|
|
* for IP.
|
| 845 |
|
|
*/
|
| 846 |
|
|
bcopy(ether_ipmulticast_min, addrlo, 6);
|
| 847 |
|
|
bcopy(ether_ipmulticast_max, addrhi, 6);
|
| 848 |
|
|
unset_allmulti = 1;
|
| 849 |
|
|
}
|
| 850 |
|
|
else {
|
| 851 |
|
|
ETHER_MAP_IP_MULTICAST(&sin->sin_addr, addrlo);
|
| 852 |
|
|
bcopy(addrlo, addrhi, 6);
|
| 853 |
|
|
}
|
| 854 |
|
|
break;
|
| 855 |
|
|
#endif
|
| 856 |
|
|
|
| 857 |
|
|
default:
|
| 858 |
|
|
splx(s);
|
| 859 |
|
|
return (EAFNOSUPPORT);
|
| 860 |
|
|
}
|
| 861 |
|
|
|
| 862 |
|
|
/*
|
| 863 |
|
|
* Look up the address in our list.
|
| 864 |
|
|
*/
|
| 865 |
|
|
ETHER_LOOKUP_MULTI(addrlo, addrhi, ac, enm);
|
| 866 |
|
|
if (enm == NULL) {
|
| 867 |
|
|
splx(s);
|
| 868 |
|
|
return (ENXIO);
|
| 869 |
|
|
}
|
| 870 |
|
|
if (--enm->enm_refcount != 0) {
|
| 871 |
|
|
/*
|
| 872 |
|
|
* Still some claims to this record.
|
| 873 |
|
|
*/
|
| 874 |
|
|
splx(s);
|
| 875 |
|
|
return (0);
|
| 876 |
|
|
}
|
| 877 |
|
|
/*
|
| 878 |
|
|
* No remaining claims to this record; unlink and free it.
|
| 879 |
|
|
*/
|
| 880 |
|
|
for (p = &enm->enm_ac->ac_multiaddrs;
|
| 881 |
|
|
*p != enm;
|
| 882 |
|
|
p = &(*p)->enm_next)
|
| 883 |
|
|
continue;
|
| 884 |
|
|
*p = (*p)->enm_next;
|
| 885 |
|
|
free(enm, M_IFMADDR);
|
| 886 |
|
|
ac->ac_multicnt--;
|
| 887 |
|
|
splx(s);
|
| 888 |
|
|
if (unset_allmulti)
|
| 889 |
|
|
ac->ac_if.if_flags &= ~IFF_ALLMULTI;
|
| 890 |
|
|
|
| 891 |
|
|
/*
|
| 892 |
|
|
* Return ENETRESET to inform the driver that the list has changed
|
| 893 |
|
|
* and its reception filter should be adjusted accordingly.
|
| 894 |
|
|
*/
|
| 895 |
|
|
return (ENETRESET);
|
| 896 |
|
|
}
|
| 897 |
|
|
|
| 898 |
|
|
SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW, 0, "Ethernet");
|
| 899 |
|
|
|
| 900 |
|
|
int
|
| 901 |
|
|
ether_ioctl(struct ifnet *ifp, int command, caddr_t data)
|
| 902 |
|
|
{
|
| 903 |
|
|
struct ifaddr *ifa = (struct ifaddr *) data;
|
| 904 |
|
|
struct ifreq *ifr = (struct ifreq *) data;
|
| 905 |
|
|
int error = 0;
|
| 906 |
|
|
|
| 907 |
|
|
switch (command) {
|
| 908 |
|
|
case SIOCSIFADDR:
|
| 909 |
|
|
ifp->if_flags |= IFF_UP;
|
| 910 |
|
|
|
| 911 |
|
|
switch (ifa->ifa_addr->sa_family) {
|
| 912 |
|
|
#ifdef INET
|
| 913 |
|
|
case AF_INET:
|
| 914 |
|
|
ifp->if_init(ifp->if_softc); /* before arpwhohas */
|
| 915 |
|
|
arp_ifinit((struct arpcom *)ifp, ifa);
|
| 916 |
|
|
break;
|
| 917 |
|
|
#endif
|
| 918 |
|
|
#ifdef IPX
|
| 919 |
|
|
/*
|
| 920 |
|
|
* XXX - This code is probably wrong
|
| 921 |
|
|
*/
|
| 922 |
|
|
case AF_IPX:
|
| 923 |
|
|
{
|
| 924 |
|
|
register struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr);
|
| 925 |
|
|
struct arpcom *ac = (struct arpcom *) (ifp->if_softc);
|
| 926 |
|
|
|
| 927 |
|
|
if (ipx_nullhost(*ina))
|
| 928 |
|
|
ina->x_host =
|
| 929 |
|
|
*(union ipx_host *)
|
| 930 |
|
|
ac->ac_enaddr;
|
| 931 |
|
|
else {
|
| 932 |
|
|
bcopy((caddr_t) ina->x_host.c_host,
|
| 933 |
|
|
(caddr_t) ac->ac_enaddr,
|
| 934 |
|
|
sizeof(ac->ac_enaddr));
|
| 935 |
|
|
}
|
| 936 |
|
|
|
| 937 |
|
|
/*
|
| 938 |
|
|
* Set new address
|
| 939 |
|
|
*/
|
| 940 |
|
|
ifp->if_init(ifp->if_softc);
|
| 941 |
|
|
break;
|
| 942 |
|
|
}
|
| 943 |
|
|
#endif
|
| 944 |
|
|
#ifdef NS
|
| 945 |
|
|
/*
|
| 946 |
|
|
* XXX - This code is probably wrong
|
| 947 |
|
|
*/
|
| 948 |
|
|
case AF_NS:
|
| 949 |
|
|
{
|
| 950 |
|
|
register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
|
| 951 |
|
|
struct arpcom *ac = (struct arpcom *) (ifp->if_softc);
|
| 952 |
|
|
|
| 953 |
|
|
if (ns_nullhost(*ina))
|
| 954 |
|
|
ina->x_host =
|
| 955 |
|
|
*(union ns_host *) (ac->ac_enaddr);
|
| 956 |
|
|
else {
|
| 957 |
|
|
bcopy((caddr_t) ina->x_host.c_host,
|
| 958 |
|
|
(caddr_t) ac->ac_enaddr,
|
| 959 |
|
|
sizeof(ac->ac_enaddr));
|
| 960 |
|
|
}
|
| 961 |
|
|
|
| 962 |
|
|
/*
|
| 963 |
|
|
* Set new address
|
| 964 |
|
|
*/
|
| 965 |
|
|
ifp->if_init(ifp->if_softc);
|
| 966 |
|
|
break;
|
| 967 |
|
|
}
|
| 968 |
|
|
#endif
|
| 969 |
|
|
default:
|
| 970 |
|
|
ifp->if_init(ifp->if_softc);
|
| 971 |
|
|
break;
|
| 972 |
|
|
}
|
| 973 |
|
|
break;
|
| 974 |
|
|
|
| 975 |
|
|
case SIOCGIFADDR:
|
| 976 |
|
|
{
|
| 977 |
|
|
struct sockaddr *sa;
|
| 978 |
|
|
|
| 979 |
|
|
sa = (struct sockaddr *) & ifr->ifr_data;
|
| 980 |
|
|
bcopy(((struct arpcom *)ifp->if_softc)->ac_enaddr,
|
| 981 |
|
|
(caddr_t) sa->sa_data, ETHER_ADDR_LEN);
|
| 982 |
|
|
}
|
| 983 |
|
|
break;
|
| 984 |
|
|
|
| 985 |
|
|
case SIOCSIFMTU:
|
| 986 |
|
|
/*
|
| 987 |
|
|
* Set the interface MTU.
|
| 988 |
|
|
*/
|
| 989 |
|
|
if (ifr->ifr_mtu > ETHERMTU) {
|
| 990 |
|
|
error = EINVAL;
|
| 991 |
|
|
} else {
|
| 992 |
|
|
ifp->if_mtu = ifr->ifr_mtu;
|
| 993 |
|
|
}
|
| 994 |
|
|
break;
|
| 995 |
|
|
}
|
| 996 |
|
|
return (error);
|
| 997 |
|
|
}
|
