1 /*
2 * Copyright (c) 2000-2021 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28 /*
29 * Copyright (c) 1982, 1989, 1993
30 * The Regents of the University of California. All rights reserved.
31 *
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
34 * are met:
35 * 1. Redistributions of source code must retain the above copyright
36 * notice, this list of conditions and the following disclaimer.
37 * 2. Redistributions in binary form must reproduce the above copyright
38 * notice, this list of conditions and the following disclaimer in the
39 * documentation and/or other materials provided with the distribution.
40 * 3. All advertising materials mentioning features or use of this software
41 * must display the following acknowledgement:
42 * This product includes software developed by the University of
43 * California, Berkeley and its contributors.
44 * 4. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 */
61
62 #include <sys/param.h>
63 #include <sys/systm.h>
64 #include <sys/kernel.h>
65 #include <sys/malloc.h>
66 #include <sys/mbuf.h>
67 #include <sys/socket.h>
68 #include <sys/sockio.h>
69 #include <sys/sysctl.h>
70
71 #include <pexpert/pexpert.h>
72
73 #define etherbroadcastaddr fugly
74 #include <net/if.h>
75 #include <net/route.h>
76 #include <net/if_llc.h>
77 #include <net/if_dl.h>
78 #include <net/if_types.h>
79 #include <net/if_ether.h>
80 #include <net/if_gif.h>
81 #include <netinet/if_ether.h>
82 #include <netinet/in.h> /* For M_LOOP */
83 #include <net/kpi_interface.h>
84 #include <net/kpi_protocol.h>
85 #undef etherbroadcastaddr
86
87 /*
88 #if INET
89 #include <netinet/in.h>
90 #include <netinet/in_var.h>
91 *
92 #include <netinet/in_systm.h>
93 #include <netinet/ip.h>
94 #endif
95 */
96 #include <net/ether_if_module.h>
97 #include <sys/socketvar.h>
98 #include <net/if_vlan_var.h>
99 #if BOND
100 #include <net/if_bond_internal.h>
101 #endif /* BOND */
102 #if IF_BRIDGE
103 #include <net/if_bridgevar.h>
104 #endif /* IF_BRIDGE */
105 #if IF_FAKE
106 #include <net/if_fake_var.h>
107 #endif /* IF_FAKE */
108 #if IF_HEADLESS
109 extern void if_headless_init(void);
110 #endif /* IF_HEADLESS */
111
112 #include <net/dlil.h>
113
114 #include <net/sockaddr_utils.h>
115
116 SYSCTL_DECL(_net_link);
117 SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
118 "Ethernet");
119
120 struct en_desc {
121 u_int16_t type; /* Type of protocol stored in data */
122 u_int32_t protocol_family; /* Protocol family */
123 u_int32_t data[2]; /* Protocol data */
124 };
125
126 /* descriptors are allocated in blocks of ETHER_DESC_BLK_SIZE */
127 #if !XNU_TARGET_OS_OSX
128 #define ETHER_DESC_BLK_SIZE (2) /* IP, ARP */
129 #else /* XNU_TARGET_OS_OSX */
130 #define ETHER_DESC_BLK_SIZE (10)
131 #endif /* XNU_TARGET_OS_OSX */
132
133 /*
134 * Header for the demux list, hangs off of IFP at if_family_cookie
135 */
136 struct ether_desc_blk_str {
137 u_int32_t n_max_used;
138 u_int32_t n_count;
139 u_int32_t n_used;
140 struct en_desc block_ptr[1];
141 };
142
143 /* Size of the above struct before the array of struct en_desc */
144 #define ETHER_DESC_HEADER_SIZE \
145 ((size_t) offsetof(struct ether_desc_blk_str, block_ptr))
146
147 __private_extern__ u_char etherbroadcastaddr[ETHER_ADDR_LEN] =
148 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
149
150 /*
151 * Release all descriptor entries owned by this protocol (there may be several).
152 * Setting the type to 0 releases the entry. Eventually we should compact-out
153 * the unused entries.
154 */
155 int
ether_del_proto(ifnet_t ifp,protocol_family_t protocol_family)156 ether_del_proto(ifnet_t ifp, protocol_family_t protocol_family)
157 {
158 struct ether_desc_blk_str *desc_blk =
159 (struct ether_desc_blk_str *)ifp->if_family_cookie;
160 u_int32_t current = 0;
161 int found = 0;
162
163 if (desc_blk == NULL) {
164 return 0;
165 }
166
167 for (current = desc_blk->n_max_used; current > 0; current--) {
168 if (desc_blk->block_ptr[current - 1].protocol_family ==
169 protocol_family) {
170 found = 1;
171 desc_blk->block_ptr[current - 1].type = 0;
172 desc_blk->n_used--;
173 }
174 }
175
176 if (desc_blk->n_used == 0) {
177 u_int32_t size = desc_blk->n_count * sizeof(struct en_desc) +
178 ETHER_DESC_HEADER_SIZE;
179 kfree_data(ifp->if_family_cookie, size);
180 ifp->if_family_cookie = 0;
181 } else {
182 /* Decrement n_max_used */
183 for (; desc_blk->n_max_used > 0 &&
184 desc_blk->block_ptr[desc_blk->n_max_used - 1].type == 0;
185 desc_blk->n_max_used--) {
186 ;
187 }
188 }
189
190 return 0;
191 }
192
193 static int
ether_add_proto_internal(struct ifnet * ifp,protocol_family_t protocol,const struct ifnet_demux_desc * demux)194 ether_add_proto_internal(struct ifnet *ifp, protocol_family_t protocol,
195 const struct ifnet_demux_desc *demux)
196 {
197 struct en_desc *ed;
198 struct ether_desc_blk_str *desc_blk =
199 (struct ether_desc_blk_str *)ifp->if_family_cookie;
200 u_int32_t i;
201
202 switch (demux->type) {
203 /* These types are supported */
204 /* Top three are preferred */
205 case DLIL_DESC_ETYPE2:
206 if (demux->datalen != 2) {
207 return EINVAL;
208 }
209 break;
210
211 case DLIL_DESC_SAP:
212 if (demux->datalen != 3) {
213 return EINVAL;
214 }
215 break;
216
217 case DLIL_DESC_SNAP:
218 if (demux->datalen != 5) {
219 return EINVAL;
220 }
221 break;
222
223 default:
224 return ENOTSUP;
225 }
226
227 /* Verify a matching descriptor does not exist */
228 if (desc_blk != NULL) {
229 switch (demux->type) {
230 case DLIL_DESC_ETYPE2:
231 for (i = 0; i < desc_blk->n_max_used; i++) {
232 if (desc_blk->block_ptr[i].type ==
233 DLIL_DESC_ETYPE2 &&
234 desc_blk->block_ptr[i].data[0] ==
235 *(u_int16_t*)demux->data) {
236 return EADDRINUSE;
237 }
238 }
239 break;
240 case DLIL_DESC_SAP:
241 case DLIL_DESC_SNAP:
242 for (i = 0; i < desc_blk->n_max_used; i++) {
243 if (desc_blk->block_ptr[i].type ==
244 demux->type &&
245 bcmp(desc_blk->block_ptr[i].data,
246 demux->data, demux->datalen) == 0) {
247 return EADDRINUSE;
248 }
249 }
250 break;
251 }
252 }
253
254 /* Check for case where all of the descriptor blocks are in use */
255 if (desc_blk == NULL || desc_blk->n_used == desc_blk->n_count) {
256 struct ether_desc_blk_str *tmp;
257 u_int32_t new_count = ETHER_DESC_BLK_SIZE;
258 u_int32_t new_size;
259 u_int32_t old_size = 0;
260
261 i = 0;
262
263 if (desc_blk) {
264 new_count += desc_blk->n_count;
265 old_size = desc_blk->n_count * sizeof(struct en_desc) +
266 ETHER_DESC_HEADER_SIZE;
267 i = desc_blk->n_used;
268 }
269
270 new_size = new_count * sizeof(struct en_desc) +
271 ETHER_DESC_HEADER_SIZE;
272
273 tmp = (struct ether_desc_blk_str *)kalloc_data(new_size, Z_WAITOK);
274 if (tmp == NULL) {
275 /*
276 * Remove any previous descriptors set in the call.
277 */
278 return ENOMEM;
279 }
280
281 bzero(((char *)tmp) + old_size, new_size - old_size);
282 if (desc_blk) {
283 bcopy(desc_blk, tmp, old_size);
284 kfree_data(desc_blk, old_size);
285 }
286 desc_blk = tmp;
287 ifp->if_family_cookie = (uintptr_t)desc_blk;
288 desc_blk->n_count = new_count;
289 } else {
290 /* Find a free entry */
291 for (i = 0; i < desc_blk->n_count; i++) {
292 if (desc_blk->block_ptr[i].type == 0) {
293 break;
294 }
295 }
296 }
297
298 /* Bump n_max_used if appropriate */
299 if (i + 1 > desc_blk->n_max_used) {
300 desc_blk->n_max_used = i + 1;
301 }
302
303 ed = &desc_blk->block_ptr[i];
304 ed->protocol_family = protocol;
305 ed->data[0] = 0;
306 ed->data[1] = 0;
307
308 switch (demux->type) {
309 case DLIL_DESC_ETYPE2:
310 /* 2 byte ethernet raw protocol type is at native_type */
311 /* prtocol must be in network byte order */
312 ed->type = DLIL_DESC_ETYPE2;
313 ed->data[0] = *(u_int16_t*)demux->data;
314 break;
315
316 case DLIL_DESC_SAP:
317 ed->type = DLIL_DESC_SAP;
318 bcopy(demux->data, &ed->data[0], 3);
319 break;
320
321 case DLIL_DESC_SNAP: {
322 u_int8_t* pDest = ((u_int8_t*)&ed->data[0]) + 3;
323 ed->type = DLIL_DESC_SNAP;
324 bcopy(demux->data, pDest, 5);
325 break;
326 }
327 }
328
329 desc_blk->n_used++;
330
331 return 0;
332 }
333
334 int
ether_add_proto(ifnet_t ifp,protocol_family_t protocol,const struct ifnet_demux_desc * demux_list,u_int32_t demux_count)335 ether_add_proto(ifnet_t ifp, protocol_family_t protocol,
336 const struct ifnet_demux_desc *demux_list, u_int32_t demux_count)
337 {
338 int error = 0;
339 u_int32_t i;
340
341 for (i = 0; i < demux_count; i++) {
342 error = ether_add_proto_internal(ifp, protocol, &demux_list[i]);
343 if (error) {
344 ether_del_proto(ifp, protocol);
345 break;
346 }
347 }
348
349 return error;
350 }
351
352 int
ether_demux(ifnet_t ifp,mbuf_t m,char * frame_header,protocol_family_t * protocol_family)353 ether_demux(ifnet_t ifp, mbuf_t m, char *frame_header,
354 protocol_family_t *protocol_family)
355 {
356 struct ether_header *eh = (struct ether_header *)(void *)frame_header;
357 u_short ether_type = eh->ether_type;
358 u_int16_t type;
359 u_int8_t *data;
360 u_int32_t i = 0;
361 struct ether_desc_blk_str *desc_blk =
362 (struct ether_desc_blk_str *)ifp->if_family_cookie;
363 u_int32_t maxd = desc_blk ? desc_blk->n_max_used : 0;
364 struct en_desc *ed = desc_blk ? desc_blk->block_ptr : NULL;
365 u_int32_t extProto1 = 0;
366 u_int32_t extProto2 = 0;
367
368 if (eh->ether_dhost[0] & 1) {
369 /* Check for broadcast */
370 if (_ether_cmp(etherbroadcastaddr, eh->ether_dhost) == 0) {
371 m->m_flags |= M_BCAST;
372 } else {
373 m->m_flags |= M_MCAST;
374 }
375 }
376
377 if (m->m_flags & M_HASFCS) {
378 /*
379 * If the M_HASFCS is set by the driver we want to make sure
380 * that we strip off the trailing FCS data before handing it
381 * up the stack.
382 */
383 m_adj(m, -ETHER_CRC_LEN);
384 m->m_flags &= ~M_HASFCS;
385 }
386
387 if ((eh->ether_dhost[0] & 1) == 0) {
388 /*
389 * When the driver is put into promiscuous mode we may receive
390 * unicast frames that are not intended for our interfaces.
391 * They are marked here as being promiscuous so the caller may
392 * dispose of them after passing the packets to any interface
393 * filters.
394 */
395 if (_ether_cmp(eh->ether_dhost, IF_LLADDR(ifp))) {
396 m->m_flags |= M_PROMISC;
397 }
398 }
399
400 /* check for VLAN */
401 if ((m->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) != 0) {
402 if (EVL_VLANOFTAG(m->m_pkthdr.vlan_tag) != 0) {
403 *protocol_family = PF_VLAN;
404 return 0;
405 }
406 /* the packet is just priority-tagged, clear the bit */
407 m->m_pkthdr.csum_flags &= ~CSUM_VLAN_TAG_VALID;
408 } else if (ether_type == htons(ETHERTYPE_VLAN)) {
409 struct ether_vlan_header * evl;
410
411 evl = (struct ether_vlan_header *)(void *)frame_header;
412 if (m->m_len < ETHER_VLAN_ENCAP_LEN ||
413 ntohs(evl->evl_proto) == ETHERTYPE_VLAN ||
414 EVL_VLANOFTAG(ntohs(evl->evl_tag)) != 0) {
415 *protocol_family = PF_VLAN;
416 return 0;
417 }
418 /* the packet is just priority-tagged */
419
420 /* make the encapsulated ethertype the actual ethertype */
421 ether_type = evl->evl_encap_proto = evl->evl_proto;
422
423 /* remove the encapsulation header */
424 m->m_len -= ETHER_VLAN_ENCAP_LEN;
425 m->m_data += ETHER_VLAN_ENCAP_LEN;
426 m->m_pkthdr.len -= ETHER_VLAN_ENCAP_LEN;
427 m->m_pkthdr.csum_flags = 0; /* can't trust hardware checksum */
428 } else if (ether_type == htons(ETHERTYPE_ARP)) {
429 m->m_pkthdr.pkt_flags |= PKTF_INET_RESOLVE; /* ARP packet */
430 }
431 data = mtod(m, u_int8_t*);
432
433 /*
434 * Determine the packet's protocol type and stuff the protocol into
435 * longs for quick compares.
436 */
437 if (ntohs(ether_type) <= 1500) {
438 bcopy(data, &extProto1, sizeof(u_int32_t));
439
440 /* SAP or SNAP */
441 if ((extProto1 & htonl(0xFFFFFF00)) == htonl(0xAAAA0300)) {
442 /* SNAP */
443 type = DLIL_DESC_SNAP;
444 bcopy(data + sizeof(u_int32_t), &extProto2,
445 sizeof(u_int32_t));
446 extProto1 &= htonl(0x000000FF);
447 } else {
448 type = DLIL_DESC_SAP;
449 extProto1 &= htonl(0xFFFFFF00);
450 }
451 } else {
452 type = DLIL_DESC_ETYPE2;
453 }
454
455 /*
456 * Search through the connected protocols for a match.
457 */
458 switch (type) {
459 case DLIL_DESC_ETYPE2:
460 for (i = 0; i < maxd; i++) {
461 if ((ed[i].type == type) &&
462 (ed[i].data[0] == ether_type)) {
463 *protocol_family = ed[i].protocol_family;
464 return 0;
465 }
466 }
467 break;
468
469 case DLIL_DESC_SAP:
470 for (i = 0; i < maxd; i++) {
471 if ((ed[i].type == type) &&
472 (ed[i].data[0] == extProto1)) {
473 *protocol_family = ed[i].protocol_family;
474 return 0;
475 }
476 }
477 break;
478
479 case DLIL_DESC_SNAP:
480 for (i = 0; i < maxd; i++) {
481 if ((ed[i].type == type) &&
482 (ed[i].data[0] == extProto1) &&
483 (ed[i].data[1] == extProto2)) {
484 *protocol_family = ed[i].protocol_family;
485 return 0;
486 }
487 }
488 break;
489 }
490
491 return ENOENT;
492 }
493
494 /*
495 * On embedded, ether_frameout is practicaly ether_frameout_extended.
496 * On non-embedded, ether_frameout has long been exposed as a public KPI,
497 * and therefore its signature must remain the same (without the pre- and
498 * postpend length parameters.)
499 */
500 #if KPI_INTERFACE_EMBEDDED
501 int
ether_frameout(struct ifnet * ifp,struct mbuf ** m,const struct sockaddr * ndest,const char * edst,const char * ether_type,u_int32_t * prepend_len,u_int32_t * postpend_len)502 ether_frameout(struct ifnet *ifp, struct mbuf **m,
503 const struct sockaddr *ndest, const char *edst,
504 const char *ether_type, u_int32_t *prepend_len, u_int32_t *postpend_len)
505 #else /* !KPI_INTERFACE_EMBEDDED */
506 int
507 ether_frameout(struct ifnet *ifp, struct mbuf **m,
508 const struct sockaddr *ndest, const char *edst,
509 const char *ether_type)
510 #endif /* KPI_INTERFACE_EMBEDDED */
511 {
512 #if KPI_INTERFACE_EMBEDDED
513 return ether_frameout_extended(ifp, m, ndest, edst, ether_type,
514 prepend_len, postpend_len);
515 #else /* !KPI_INTERFACE_EMBEDDED */
516 return ether_frameout_extended(ifp, m, ndest, edst, ether_type,
517 NULL, NULL);
518 #endif /* !KPI_INTERFACE_EMBEDDED */
519 }
520
521 /*
522 * Ethernet output routine.
523 * Encapsulate a packet of type family for the local net.
524 * Use trailer local net encapsulation if enough data in first
525 * packet leaves a multiple of 512 bytes of data in remainder.
526 */
527 int
ether_frameout_extended(struct ifnet * ifp,struct mbuf ** m,const struct sockaddr * ndest,const char * edst,const char * ether_type,u_int32_t * prepend_len,u_int32_t * postpend_len)528 ether_frameout_extended(struct ifnet *ifp, struct mbuf **m,
529 const struct sockaddr *ndest, const char *edst,
530 const char *ether_type, u_int32_t *prepend_len, u_int32_t *postpend_len)
531 {
532 struct ether_header *eh;
533 int hlen; /* link layer header length */
534
535 hlen = ETHER_HDR_LEN;
536
537 /*
538 * If a simplex interface, and the packet is being sent to our
539 * Ethernet address or a broadcast address, loopback a copy.
540 * XXX To make a simplex device behave exactly like a duplex
541 * device, we should copy in the case of sending to our own
542 * ethernet address (thus letting the original actually appear
543 * on the wire). However, we don't do that here for security
544 * reasons and compatibility with the original behavior.
545 */
546 if ((ifp->if_flags & IFF_SIMPLEX) &&
547 ((*m)->m_flags & M_LOOP) && lo_ifp != NULL) {
548 if ((*m)->m_flags & M_BCAST) {
549 struct mbuf *n = m_copy(*m, 0, (int)M_COPYALL);
550 if (n != NULL) {
551 dlil_output(lo_ifp, ndest->sa_family,
552 n, NULL, ndest, 0, NULL);
553 }
554 } else if (_ether_cmp(edst, IF_LLADDR(ifp)) == 0) {
555 dlil_output(lo_ifp, ndest->sa_family, *m,
556 NULL, ndest, 0, NULL);
557 return EJUSTRETURN;
558 }
559 }
560
561 /*
562 * Add local net header. If no space in first mbuf,
563 * allocate another.
564 */
565 M_PREPEND(*m, sizeof(struct ether_header), M_DONTWAIT, 0);
566 if (*m == NULL) {
567 return EJUSTRETURN;
568 }
569
570 if (prepend_len != NULL) {
571 *prepend_len = sizeof(struct ether_header);
572 }
573 if (postpend_len != NULL) {
574 *postpend_len = 0;
575 }
576
577 eh = mtod(*m, struct ether_header *);
578 (void) memcpy(&eh->ether_type, ether_type, sizeof(eh->ether_type));
579 (void) memcpy(eh->ether_dhost, edst, ETHER_ADDR_LEN);
580 (void) memcpy(eh->ether_shost, IF_LLADDR(ifp), ETHER_ADDR_LEN);
581
582 return 0;
583 }
584
585 errno_t
ether_check_multi(ifnet_t ifp,const struct sockaddr * proto_addr)586 ether_check_multi(ifnet_t ifp, const struct sockaddr *proto_addr)
587 {
588 #pragma unused(ifp)
589 errno_t result = EAFNOSUPPORT;
590 const u_char *e_addr;
591
592 /*
593 * AF_SPEC and AF_LINK don't require translation. We do
594 * want to verify that they specify a valid multicast.
595 */
596 switch (proto_addr->sa_family) {
597 case AF_UNSPEC:
598 e_addr = (const u_char*)&proto_addr->sa_data[0];
599 if ((e_addr[0] & 0x01) != 0x01) {
600 result = EADDRNOTAVAIL;
601 } else {
602 result = 0;
603 }
604 break;
605
606 case AF_LINK:
607 e_addr = CONST_LLADDR(SDL(proto_addr));
608 if ((e_addr[0] & 0x01) != 0x01) {
609 result = EADDRNOTAVAIL;
610 } else {
611 result = 0;
612 }
613 break;
614 }
615
616 return result;
617 }
618
619 int
ether_ioctl(ifnet_t ifp,u_int32_t command,void * data)620 ether_ioctl(ifnet_t ifp, u_int32_t command, void *data)
621 {
622 #pragma unused(ifp, command, data)
623 return EOPNOTSUPP;
624 }
625
626 __private_extern__ int
ether_family_init(void)627 ether_family_init(void)
628 {
629 errno_t error = 0;
630
631 /* Register protocol registration functions */
632 if ((error = proto_register_plumber(PF_INET, APPLE_IF_FAM_ETHERNET,
633 ether_attach_inet, ether_detach_inet)) != 0) {
634 printf("proto_register_plumber failed for PF_INET error=%d\n",
635 error);
636 goto done;
637 }
638 if ((error = proto_register_plumber(PF_INET6, APPLE_IF_FAM_ETHERNET,
639 ether_attach_inet6, ether_detach_inet6)) != 0) {
640 printf("proto_register_plumber failed for PF_INET6 error=%d\n",
641 error);
642 goto done;
643 }
644 #if VLAN
645 vlan_family_init();
646 #endif /* VLAN */
647 #if BOND
648 bond_family_init();
649 #endif /* BOND */
650 #if IF_BRIDGE
651 bridgeattach(0);
652 #endif /* IF_BRIDGE */
653 #if IF_FAKE
654 if_fake_init();
655 #endif /* IF_FAKE */
656 #if IF_HEADLESS
657 if_headless_init();
658 #endif /* IF_HEADLESS */
659 done:
660
661 return error;
662 }
663