2 * Copyright (c) 1982, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/net/if_ethersubr.c,v 1.70.2.33 2003/04/28 15:45:53 archie Exp $
35 * $DragonFly: src/sys/net/if_ethersubr.c,v 1.6 2003/08/07 21:54:30 dillon Exp $
38 #include "opt_atalk.h"
40 #include "opt_inet6.h"
43 #include "opt_netgraph.h"
45 #include <sys/param.h>
46 #include <sys/systm.h>
47 #include <sys/kernel.h>
48 #include <sys/malloc.h>
50 #include <sys/socket.h>
51 #include <sys/sockio.h>
52 #include <sys/sysctl.h>
55 #include <net/netisr.h>
56 #include <net/route.h>
57 #include <net/if_llc.h>
58 #include <net/if_dl.h>
59 #include <net/if_types.h>
61 #include <net/ethernet.h>
62 #include <net/bridge/bridge.h>
64 #if defined(INET) || defined(INET6)
65 #include <netinet/in.h>
66 #include <netinet/in_var.h>
67 #include <netinet/if_ether.h>
68 #include <net/ipfw/ip_fw.h>
69 #include <net/dummynet/ip_dummynet.h>
72 #include <netinet6/nd6.h>
76 #include <netproto/ipx/ipx.h>
77 #include <netproto/ipx/ipx_if.h>
78 int (*ef_inputp)(struct ifnet*, struct ether_header *eh, struct mbuf *m);
79 int (*ef_outputp)(struct ifnet *ifp, struct mbuf **mp,
80 struct sockaddr *dst, short *tp, int *hlen);
85 #include <netns/ns_if.h>
87 int ether_outputdebug = 0;
88 int ether_inputdebug = 0;
92 #include <netproto/atalk/at.h>
93 #include <netproto/atalk/at_var.h>
94 #include <netproto/atalk/at_extern.h>
96 #define llc_snap_org_code llc_un.type_snap.org_code
97 #define llc_snap_ether_type llc_un.type_snap.ether_type
99 extern u_char at_org_code[3];
100 extern u_char aarp_org_code[3];
101 #endif /* NETATALK */
103 /* netgraph node hooks for ng_ether(4) */
104 void (*ng_ether_input_p)(struct ifnet *ifp,
105 struct mbuf **mp, struct ether_header *eh);
106 void (*ng_ether_input_orphan_p)(struct ifnet *ifp,
107 struct mbuf *m, struct ether_header *eh);
108 int (*ng_ether_output_p)(struct ifnet *ifp, struct mbuf **mp);
109 void (*ng_ether_attach_p)(struct ifnet *ifp);
110 void (*ng_ether_detach_p)(struct ifnet *ifp);
112 int (*vlan_input_p)(struct ether_header *eh, struct mbuf *m);
113 int (*vlan_input_tag_p)(struct ether_header *eh, struct mbuf *m,
118 bridge_in_t *bridge_in_ptr;
119 bdg_forward_t *bdg_forward_ptr;
120 bdgtakeifaces_t *bdgtakeifaces_ptr;
121 struct bdg_softc *ifp2sc;
123 static int ether_resolvemulti(struct ifnet *, struct sockaddr **,
125 u_char etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
126 #define senderr(e) do { error = (e); goto bad;} while (0)
127 #define IFP2AC(IFP) ((struct arpcom *)IFP)
130 ether_ipfw_chk(struct mbuf **m0, struct ifnet *dst,
131 struct ip_fw **rule, struct ether_header *eh, int shared);
132 static int ether_ipfw;
135 * Ethernet output routine.
136 * Encapsulate a packet of type family for the local net.
137 * Use trailer local net encapsulation if enough data in first
138 * packet leaves a multiple of 512 bytes of data in remainder.
139 * Assumes that ifp is actually pointer to arpcom structure.
142 ether_output(ifp, m, dst, rt0)
145 struct sockaddr *dst;
149 int error = 0, hdrcmplt = 0;
150 u_char esrc[6], edst[6];
152 struct ether_header *eh;
154 int hlen; /* link layer header lenght */
155 struct arpcom *ac = IFP2AC(ifp);
157 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
161 if ((rt->rt_flags & RTF_UP) == 0) {
162 rt0 = rt = rtalloc1(dst, 1, 0UL);
166 senderr(EHOSTUNREACH);
168 if (rt->rt_flags & RTF_GATEWAY) {
169 if (rt->rt_gwroute == 0)
171 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
172 rtfree(rt); rt = rt0;
173 lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1,
175 if ((rt = rt->rt_gwroute) == 0)
176 senderr(EHOSTUNREACH);
179 if (rt->rt_flags & RTF_REJECT)
180 if (rt->rt_rmx.rmx_expire == 0 ||
181 time_second < rt->rt_rmx.rmx_expire)
182 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
184 hlen = ETHER_HDR_LEN;
185 switch (dst->sa_family) {
188 if (!arpresolve(ifp, rt, m, dst, edst, rt0))
189 return (0); /* if not yet resolved */
190 type = htons(ETHERTYPE_IP);
195 if (!nd6_storelladdr(&ac->ac_if, rt, m, dst, (u_char *)edst)) {
196 /* Something bad happened */
199 type = htons(ETHERTYPE_IPV6);
205 error = ef_outputp(ifp, &m, dst, &type, &hlen);
209 type = htons(ETHERTYPE_IPX);
210 bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
211 (caddr_t)edst, sizeof (edst));
217 struct at_ifaddr *aa;
219 if ((aa = at_ifawithnet((struct sockaddr_at *)dst)) == NULL) {
222 if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst))
225 * In the phase 2 case, need to prepend an mbuf for the llc header.
226 * Since we must preserve the value of m, which is passed to us by
227 * value, we m_copy() the first mbuf, and use it for our llc header.
229 if ( aa->aa_flags & AFA_PHASE2 ) {
232 M_PREPEND(m, sizeof(struct llc), M_WAIT);
233 llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
234 llc.llc_control = LLC_UI;
235 bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code));
236 llc.llc_snap_ether_type = htons( ETHERTYPE_AT );
237 bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc));
238 type = htons(m->m_pkthdr.len);
239 hlen = sizeof(struct llc) + ETHER_HDR_LEN;
241 type = htons(ETHERTYPE_AT);
245 #endif /* NETATALK */
250 case 0x8137: /* Novell Ethernet_II Ethernet TYPE II */
253 case 0x0: /* Novell 802.3 */
254 type = htons( m->m_pkthdr.len);
256 case 0xe0e0: /* Novell 802.2 and Token-Ring */
257 M_PREPEND(m, 3, M_WAIT);
258 type = htons( m->m_pkthdr.len);
259 cp = mtod(m, u_char *);
265 bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
266 (caddr_t)edst, sizeof (edst));
268 * XXX if ns_thishost is the same as the node's ethernet
269 * address then just the default code will catch this anyhow.
270 * So I'm not sure if this next clause should be here at all?
273 if (!bcmp((caddr_t)edst, (caddr_t)&ns_thishost, sizeof(edst))){
274 m->m_pkthdr.rcvif = ifp;
276 if (IF_HANDOFF(inq, m, NULL))
277 schednetisr(NETISR_NS);
280 if (!bcmp((caddr_t)edst, (caddr_t)&ns_broadhost, sizeof(edst))){
281 m->m_flags |= M_BCAST;
286 case pseudo_AF_HDRCMPLT:
288 eh = (struct ether_header *)dst->sa_data;
289 (void)memcpy(esrc, eh->ether_shost, sizeof (esrc));
293 loop_copy = -1; /* if this is for us, don't do it */
294 eh = (struct ether_header *)dst->sa_data;
295 (void)memcpy(edst, eh->ether_dhost, sizeof (edst));
296 type = eh->ether_type;
300 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
302 senderr(EAFNOSUPPORT);
306 * Add local net header. If no space in first mbuf,
309 M_PREPEND(m, sizeof (struct ether_header), M_DONTWAIT);
312 eh = mtod(m, struct ether_header *);
313 (void)memcpy(&eh->ether_type, &type,
314 sizeof(eh->ether_type));
315 (void)memcpy(eh->ether_dhost, edst, sizeof (edst));
317 (void)memcpy(eh->ether_shost, esrc,
318 sizeof(eh->ether_shost));
320 (void)memcpy(eh->ether_shost, ac->ac_enaddr,
321 sizeof(eh->ether_shost));
324 * If a simplex interface, and the packet is being sent to our
325 * Ethernet address or a broadcast address, loopback a copy.
326 * XXX To make a simplex device behave exactly like a duplex
327 * device, we should copy in the case of sending to our own
328 * ethernet address (thus letting the original actually appear
329 * on the wire). However, we don't do that here for security
330 * reasons and compatibility with the original behavior.
332 if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) {
335 if (m->m_pkthdr.csum_flags & CSUM_IP)
336 csum_flags |= (CSUM_IP_CHECKED|CSUM_IP_VALID);
337 if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA)
338 csum_flags |= (CSUM_DATA_VALID|CSUM_PSEUDO_HDR);
339 if ((m->m_flags & M_BCAST) || (loop_copy > 0)) {
342 if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
343 n->m_pkthdr.csum_flags |= csum_flags;
344 if (csum_flags & CSUM_DATA_VALID)
345 n->m_pkthdr.csum_data = 0xffff;
346 (void)if_simloop(ifp, n, dst->sa_family, hlen);
349 } else if (bcmp(eh->ether_dhost,
350 eh->ether_shost, ETHER_ADDR_LEN) == 0) {
351 m->m_pkthdr.csum_flags |= csum_flags;
352 if (csum_flags & CSUM_DATA_VALID)
353 m->m_pkthdr.csum_data = 0xffff;
354 (void) if_simloop(ifp, m, dst->sa_family, hlen);
355 return (0); /* XXX */
359 /* Handle ng_ether(4) processing, if any */
360 if (ng_ether_output_p != NULL) {
361 if ((error = (*ng_ether_output_p)(ifp, &m)) != 0) {
370 /* Continue with link-layer output */
371 return ether_output_frame(ifp, m);
375 * Ethernet link layer output routine to send a raw frame to the device.
377 * This assumes that the 14 byte Ethernet header is present and contiguous
378 * in the first mbuf (if BRIDGE'ing).
381 ether_output_frame(ifp, m)
387 struct ip_fw *rule = NULL;
389 /* Extract info from dummynet tag, ignore others */
390 for (; m->m_type == MT_TAG; m = m->m_next)
391 if (m->m_flags == PACKET_TAG_DUMMYNET)
392 rule = ((struct dn_pkt *)m)->rule;
394 if (rule) /* packet was already bridged */
397 if (BDG_ACTIVE(ifp) ) {
398 struct ether_header *eh; /* a ptr suffices */
400 m->m_pkthdr.rcvif = NULL;
401 eh = mtod(m, struct ether_header *);
402 m_adj(m, ETHER_HDR_LEN);
403 m = bdg_forward_ptr(m, eh, ifp);
411 if (IPFW_LOADED && ether_ipfw != 0) {
412 struct ether_header save_eh, *eh;
414 eh = mtod(m, struct ether_header *);
416 m_adj(m, ETHER_HDR_LEN);
417 if (ether_ipfw_chk(&m, ifp, &rule, eh, 0) == 0) {
420 return ENOBUFS; /* pkt dropped */
422 return 0; /* consumed e.g. in a pipe */
424 /* packet was ok, restore the ethernet header */
425 if ( (void *)(eh + 1) == (void *)m->m_data) {
426 m->m_data -= ETHER_HDR_LEN ;
427 m->m_len += ETHER_HDR_LEN ;
428 m->m_pkthdr.len += ETHER_HDR_LEN ;
430 M_PREPEND(m, ETHER_HDR_LEN, M_DONTWAIT);
431 if (m == NULL) /* nope... */
433 bcopy(&save_eh, mtod(m, struct ether_header *),
439 * Queue message on interface, update output statistics if
440 * successful, and start output if interface not yet active.
442 if (!IF_HANDOFF(&ifp->if_snd, m, ifp))
449 * ipfw processing for ethernet packets (in and out).
450 * The second parameter is NULL from ether_demux, and ifp from
451 * ether_output_frame. This section of code could be used from
452 * bridge.c as well as long as we use some extra info
453 * to distinguish that case from ether_output_frame();
456 ether_ipfw_chk(struct mbuf **m0, struct ifnet *dst,
457 struct ip_fw **rule, struct ether_header *eh, int shared)
459 struct ether_header save_eh = *eh; /* might be a ptr in m */
461 struct ip_fw_args args;
463 if (*rule != NULL && fw_one_pass)
464 return 1; /* dummynet packet, already partially processed */
467 * I need some amt of data to be contiguous, and in case others need
468 * the packet (shared==1) also better be in the first mbuf.
470 i = min( (*m0)->m_pkthdr.len, max_protohdr);
471 if ( shared || (*m0)->m_len < i) {
472 *m0 = m_pullup(*m0, i);
477 args.m = *m0; /* the packet we are looking at */
478 args.oif = dst; /* destination, if any */
479 args.divert_rule = 0; /* we do not support divert yet */
480 args.rule = *rule; /* matching rule to restart */
481 args.next_hop = NULL; /* we do not support forward yet */
482 args.eh = &save_eh; /* MAC header for bridged/MAC packets */
483 i = ip_fw_chk_ptr(&args);
487 if ( (i & IP_FW_PORT_DENY_FLAG) || *m0 == NULL) /* drop */
490 if (i == 0) /* a PASS rule. */
493 if (DUMMYNET_LOADED && (i & IP_FW_PORT_DYNT_FLAG)) {
495 * Pass the pkt to dummynet, which consumes it.
496 * If shared, make a copy and keep the original.
501 m = m_copypacket(*m0, M_DONTWAIT);
505 m = *m0 ; /* pass the original to dummynet */
506 *m0 = NULL ; /* and nothing back to the caller */
509 * Prepend the header, optimize for the common case of
510 * eh pointing into the mbuf.
512 if ( (void *)(eh + 1) == (void *)m->m_data) {
513 m->m_data -= ETHER_HDR_LEN ;
514 m->m_len += ETHER_HDR_LEN ;
515 m->m_pkthdr.len += ETHER_HDR_LEN ;
517 M_PREPEND(m, ETHER_HDR_LEN, M_DONTWAIT);
518 if (m == NULL) /* nope... */
520 bcopy(&save_eh, mtod(m, struct ether_header *),
523 ip_dn_io_ptr(m, (i & 0xffff),
524 dst ? DN_TO_ETH_OUT: DN_TO_ETH_DEMUX, &args);
528 * XXX at some point add support for divert/forward actions.
529 * If none of the above matches, we have to drop the pkt.
535 * Process a received Ethernet packet. We have two different interfaces:
536 * one (conventional) assumes the packet in the mbuf, with the ethernet
537 * header provided separately in *eh. The second one (new) has everything
538 * in the mbuf, and we can tell it because eh == NULL.
539 * The caller MUST MAKE SURE that there are at least
540 * sizeof(struct ether_header) bytes in the first mbuf.
542 * This allows us to concentrate in one place a bunch of code which
543 * is replicated in all device drivers. Also, many functions called
544 * from ether_input() try to put the eh back into the mbuf, so we
545 * can later propagate the 'contiguous packet' interface to them,
546 * and handle the old interface just here.
548 * NOTA BENE: for many drivers "eh" is a pointer into the first mbuf or
549 * cluster, right before m_data. So be very careful when working on m,
550 * as you could destroy *eh !!
552 * First we perform any link layer operations, then continue
553 * to the upper layers with ether_demux().
556 ether_input(struct ifnet *ifp, struct ether_header *eh, struct mbuf *m)
558 struct ether_header save_eh;
561 if (m->m_len < sizeof(struct ether_header)) {
562 /* XXX error in the caller. */
566 m->m_pkthdr.rcvif = ifp;
567 eh = mtod(m, struct ether_header *);
568 m->m_data += sizeof(struct ether_header);
569 m->m_len -= sizeof(struct ether_header);
570 m->m_pkthdr.len = m->m_len;
573 /* Check for a BPF tap */
574 if (ifp->if_bpf != NULL) {
577 /* This kludge is OK; BPF treats the "mbuf" as read-only */
579 mh.mh_data = (char *)eh;
580 mh.mh_len = ETHER_HDR_LEN;
581 bpf_mtap(ifp, (struct mbuf *)&mh);
584 ifp->if_ibytes += m->m_pkthdr.len + sizeof (*eh);
586 /* Handle ng_ether(4) processing, if any */
587 if (ng_ether_input_p != NULL) {
588 (*ng_ether_input_p)(ifp, &m, eh);
593 /* Check for bridging mode */
594 if (BDG_ACTIVE(ifp) ) {
597 /* Check with bridging code */
598 if ((bif = bridge_in_ptr(ifp, eh)) == BDG_DROP) {
602 if (bif != BDG_LOCAL) {
603 save_eh = *eh ; /* because it might change */
604 m = bdg_forward_ptr(m, eh, bif); /* needs forwarding */
606 * Do not continue if bdg_forward_ptr() processed our
607 * packet (and cleared the mbuf pointer m) or if
608 * it dropped (m_free'd) the packet itself.
611 if (bif == BDG_BCAST || bif == BDG_MCAST)
612 printf("bdg_forward drop MULTICAST PKT\n");
620 goto recvLocal; /* receive locally */
622 /* If not local and not multicast, just drop it */
629 /* Continue with upper layer processing */
630 ether_demux(ifp, eh, m);
634 * Upper layer processing for a received Ethernet packet.
637 ether_demux(ifp, eh, m)
639 struct ether_header *eh;
644 #if defined(NETATALK)
647 struct ip_fw *rule = NULL;
649 /* Extract info from dummynet tag, ignore others */
650 for (;m->m_type == MT_TAG; m = m->m_next)
651 if (m->m_flags == PACKET_TAG_DUMMYNET) {
652 rule = ((struct dn_pkt *)m)->rule;
653 ifp = m->m_next->m_pkthdr.rcvif;
656 if (rule) /* packet was already bridged */
659 if (! (BDG_ACTIVE(ifp) ) )
660 /* Discard packet if upper layers shouldn't see it because it was
661 unicast to a different Ethernet address. If the driver is working
662 properly, then this situation can only happen when the interface
663 is in promiscuous mode. */
664 if ((ifp->if_flags & IFF_PROMISC) != 0
665 && (eh->ether_dhost[0] & 1) == 0
666 && bcmp(eh->ether_dhost,
667 IFP2AC(ifp)->ac_enaddr, ETHER_ADDR_LEN) != 0
668 && (ifp->if_ipending & IFF_PPROMISC) == 0) {
673 /* Discard packet if interface is not up */
674 if ((ifp->if_flags & IFF_UP) == 0) {
678 if (eh->ether_dhost[0] & 1) {
679 if (bcmp((caddr_t)etherbroadcastaddr, (caddr_t)eh->ether_dhost,
680 sizeof(etherbroadcastaddr)) == 0)
681 m->m_flags |= M_BCAST;
683 m->m_flags |= M_MCAST;
685 if (m->m_flags & (M_BCAST|M_MCAST))
689 if (IPFW_LOADED && ether_ipfw != 0) {
690 if (ether_ipfw_chk(&m, NULL, &rule, eh, 0 ) == 0) {
697 ether_type = ntohs(eh->ether_type);
699 switch (ether_type) {
702 if (ipflow_fastforward(m))
704 schednetisr(NETISR_IP);
709 if (ifp->if_flags & IFF_NOARP) {
710 /* Discard packet if ARP is disabled on interface */
714 schednetisr(NETISR_ARP);
720 if (ef_inputp && ef_inputp(ifp, eh, m) == 0)
722 schednetisr(NETISR_IPX);
728 schednetisr(NETISR_IPV6);
733 case 0x8137: /* Novell Ethernet_II Ethernet TYPE II */
734 schednetisr(NETISR_NS);
741 schednetisr(NETISR_ATALK);
745 /* probably this should be done with a NETISR as well */
746 aarpinput(IFP2AC(ifp), m); /* XXX */
748 #endif /* NETATALK */
751 if (vlan_input_p != NULL)
752 (*vlan_input_p)(eh, m);
754 m->m_pkthdr.rcvif->if_noproto++;
761 if (ef_inputp && ef_inputp(ifp, eh, m) == 0)
765 checksum = mtod(m, ushort *);
767 if ((ether_type <= ETHERMTU) &&
768 ((*checksum == 0xffff) || (*checksum == 0xE0E0))){
769 if(*checksum == 0xE0E0) {
770 m->m_pkthdr.len -= 3;
774 schednetisr(NETISR_NS);
779 #if defined(NETATALK)
780 if (ether_type > ETHERMTU)
782 l = mtod(m, struct llc *);
783 switch (l->llc_dsap) {
785 switch (l->llc_control) {
787 if (l->llc_ssap != LLC_SNAP_LSAP)
790 if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code,
791 sizeof(at_org_code)) == 0 &&
792 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) {
794 m_adj( m, sizeof( struct llc ));
795 schednetisr(NETISR_ATALK);
799 if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code,
800 sizeof(aarp_org_code)) == 0 &&
801 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) {
802 m_adj( m, sizeof( struct llc ));
803 aarpinput(IFP2AC(ifp), m); /* XXX */
813 if (ng_ether_input_orphan_p != NULL)
814 (*ng_ether_input_orphan_p)(ifp, m, eh);
820 if (ng_ether_input_orphan_p != NULL)
821 (*ng_ether_input_orphan_p)(ifp, m, eh);
825 #endif /* NETATALK */
828 (void) IF_HANDOFF(inq, m, NULL);
832 * Perform common duties while attaching to interface list
835 ether_ifattach(ifp, bpf)
840 struct sockaddr_dl *sdl;
842 ifp->if_type = IFT_ETHER;
846 ifp->if_mtu = ETHERMTU;
847 ifp->if_resolvemulti = ether_resolvemulti;
848 if (ifp->if_baudrate == 0)
849 ifp->if_baudrate = 10000000;
850 ifa = ifnet_addrs[ifp->if_index - 1];
851 KASSERT(ifa != NULL, ("%s: no lladdr!\n", __FUNCTION__));
852 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
853 sdl->sdl_type = IFT_ETHER;
854 sdl->sdl_alen = ifp->if_addrlen;
855 bcopy((IFP2AC(ifp))->ac_enaddr, LLADDR(sdl), ifp->if_addrlen);
857 bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
858 if (ng_ether_attach_p != NULL)
859 (*ng_ether_attach_p)(ifp);
865 * Perform common duties while detaching an Ethernet interface
868 ether_ifdetach(ifp, bpf)
872 if (ng_ether_detach_p != NULL)
873 (*ng_ether_detach_p)(ifp);
881 SYSCTL_DECL(_net_link);
882 SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW, 0, "Ethernet");
883 SYSCTL_INT(_net_link_ether, OID_AUTO, ipfw, CTLFLAG_RW,
884 ðer_ipfw,0,"Pass ether pkts through firewall");
887 ether_ioctl(ifp, command, data)
892 struct ifaddr *ifa = (struct ifaddr *) data;
893 struct ifreq *ifr = (struct ifreq *) data;
898 ifp->if_flags |= IFF_UP;
900 switch (ifa->ifa_addr->sa_family) {
903 ifp->if_init(ifp->if_softc); /* before arpwhohas */
904 arp_ifinit(ifp, ifa);
909 * XXX - This code is probably wrong
913 struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr);
914 struct arpcom *ac = IFP2AC(ifp);
916 if (ipx_nullhost(*ina))
921 bcopy((caddr_t) ina->x_host.c_host,
922 (caddr_t) ac->ac_enaddr,
923 sizeof(ac->ac_enaddr));
929 ifp->if_init(ifp->if_softc);
935 * XXX - This code is probably wrong
939 struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
940 struct arpcom *ac = IFP2AC(ifp);
942 if (ns_nullhost(*ina))
944 *(union ns_host *) (ac->ac_enaddr);
946 bcopy((caddr_t) ina->x_host.c_host,
947 (caddr_t) ac->ac_enaddr,
948 sizeof(ac->ac_enaddr));
954 ifp->if_init(ifp->if_softc);
959 ifp->if_init(ifp->if_softc);
968 sa = (struct sockaddr *) & ifr->ifr_data;
969 bcopy(IFP2AC(ifp)->ac_enaddr,
970 (caddr_t) sa->sa_data, ETHER_ADDR_LEN);
976 * Set the interface MTU.
978 if (ifr->ifr_mtu > ETHERMTU) {
981 ifp->if_mtu = ifr->ifr_mtu;
989 ether_resolvemulti(ifp, llsa, sa)
991 struct sockaddr **llsa;
994 struct sockaddr_dl *sdl;
995 struct sockaddr_in *sin;
997 struct sockaddr_in6 *sin6;
1001 switch(sa->sa_family) {
1004 * No mapping needed. Just check that it's a valid MC address.
1006 sdl = (struct sockaddr_dl *)sa;
1007 e_addr = LLADDR(sdl);
1008 if ((e_addr[0] & 1) != 1)
1009 return EADDRNOTAVAIL;
1015 sin = (struct sockaddr_in *)sa;
1016 if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
1017 return EADDRNOTAVAIL;
1018 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
1020 sdl->sdl_len = sizeof *sdl;
1021 sdl->sdl_family = AF_LINK;
1022 sdl->sdl_index = ifp->if_index;
1023 sdl->sdl_type = IFT_ETHER;
1024 sdl->sdl_alen = ETHER_ADDR_LEN;
1025 e_addr = LLADDR(sdl);
1026 ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr);
1027 *llsa = (struct sockaddr *)sdl;
1032 sin6 = (struct sockaddr_in6 *)sa;
1033 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1035 * An IP6 address of 0 means listen to all
1036 * of the Ethernet multicast address used for IP6.
1037 * (This is used for multicast routers.)
1039 ifp->if_flags |= IFF_ALLMULTI;
1043 if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))
1044 return EADDRNOTAVAIL;
1045 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
1047 sdl->sdl_len = sizeof *sdl;
1048 sdl->sdl_family = AF_LINK;
1049 sdl->sdl_index = ifp->if_index;
1050 sdl->sdl_type = IFT_ETHER;
1051 sdl->sdl_alen = ETHER_ADDR_LEN;
1052 e_addr = LLADDR(sdl);
1053 ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr);
1054 *llsa = (struct sockaddr *)sdl;
1060 * Well, the text isn't quite right, but it's the name
1063 return EAFNOSUPPORT;