1 | /* |
2 | * Copyright (c) 2000-2013 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 | * NOTICE: This file was modified by SPARTA, Inc. in 2006 to introduce |
63 | * support for mandatory and extensible security protections. This notice |
64 | * is included in support of clause 2.2 (b) of the Apple Public License, |
65 | * Version 2.0. |
66 | */ |
67 | |
68 | |
69 | #include <sys/param.h> |
70 | #include <sys/systm.h> |
71 | #include <sys/kernel.h> |
72 | #include <sys/malloc.h> |
73 | #include <sys/mbuf.h> |
74 | #include <sys/socket.h> |
75 | #include <sys/sockio.h> |
76 | #include <sys/sysctl.h> |
77 | |
78 | #include <net/dlil.h> |
79 | #include <net/if.h> |
80 | #include <net/route.h> |
81 | #include <net/if_llc.h> |
82 | #include <net/if_dl.h> |
83 | #include <net/if_types.h> |
84 | #include <net/kpi_protocol.h> |
85 | #include <netinet/in.h> |
86 | #include <netinet/in_var.h> |
87 | #include <netinet/if_ether.h> |
88 | #include <netinet/in_systm.h> |
89 | #include <netinet/ip.h> |
90 | #include <netinet/in_arp.h> |
91 | |
92 | #include <sys/socketvar.h> |
93 | |
94 | #include <net/dlil.h> |
95 | |
96 | /* #include "vlan.h" */ |
97 | #if NVLAN > 0 |
98 | #include <net/if_vlan_var.h> |
99 | #endif /* NVLAN > 0 */ |
100 | #include <net/ether_if_module.h> |
101 | #if CONFIG_MACF |
102 | #include <security/mac_framework.h> |
103 | #endif |
104 | |
105 | /* Local function declarations */ |
106 | extern void *kdp_get_interface(void); |
107 | extern void kdp_set_ip_and_mac_addresses(struct in_addr *ipaddr, |
108 | struct ether_addr *macaddr); |
109 | |
110 | #define _ip_copy(dst, src) \ |
111 | bcopy(src, dst, sizeof (struct in_addr)) |
112 | |
113 | static void |
114 | ether_inet_arp_input(struct ifnet *ifp, struct mbuf *m) |
115 | { |
116 | struct ether_arp *ea; |
117 | struct sockaddr_dl sender_hw; |
118 | struct sockaddr_in sender_ip; |
119 | struct sockaddr_in target_ip; |
120 | |
121 | if (mbuf_len(m) < sizeof (*ea) && mbuf_pullup(&m, sizeof (*ea)) != 0) |
122 | return; |
123 | |
124 | ea = mbuf_data(m); |
125 | |
126 | /* Verify this is an ethernet/ip arp and address lengths are correct */ |
127 | if (ntohs(ea->arp_hrd) != ARPHRD_ETHER || |
128 | ntohs(ea->arp_pro) != ETHERTYPE_IP || |
129 | ea->arp_pln != sizeof (struct in_addr) || |
130 | ea->arp_hln != ETHER_ADDR_LEN) { |
131 | mbuf_freem(m); |
132 | return; |
133 | } |
134 | |
135 | /* Verify the sender is not broadcast */ |
136 | if (bcmp(ea->arp_sha, etherbroadcastaddr, ETHER_ADDR_LEN) == 0) { |
137 | mbuf_freem(m); |
138 | return; |
139 | } |
140 | |
141 | bzero(&sender_ip, sizeof (sender_ip)); |
142 | sender_ip.sin_len = sizeof (sender_ip); |
143 | sender_ip.sin_family = AF_INET; |
144 | _ip_copy(&sender_ip.sin_addr, ea->arp_spa); |
145 | target_ip = sender_ip; |
146 | _ip_copy(&target_ip.sin_addr, ea->arp_tpa); |
147 | |
148 | bzero(&sender_hw, sizeof (sender_hw)); |
149 | sender_hw.sdl_len = sizeof (sender_hw); |
150 | sender_hw.sdl_family = AF_LINK; |
151 | sender_hw.sdl_type = IFT_ETHER; |
152 | sender_hw.sdl_alen = ETHER_ADDR_LEN; |
153 | bcopy(ea->arp_sha, LLADDR(&sender_hw), ETHER_ADDR_LEN); |
154 | |
155 | /* update L2 reachability record, if present */ |
156 | arp_llreach_set_reachable(ifp, LLADDR(&sender_hw), ETHER_ADDR_LEN); |
157 | |
158 | arp_ip_handle_input(ifp, ntohs(ea->arp_op), &sender_hw, &sender_ip, |
159 | &target_ip); |
160 | mbuf_freem(m); |
161 | } |
162 | |
163 | /* |
164 | * Process a received Ethernet packet; |
165 | * the packet is in the mbuf chain m without |
166 | * the ether header, which is provided separately. |
167 | */ |
168 | static errno_t |
169 | ether_inet_input(ifnet_t ifp, protocol_family_t protocol_family, |
170 | mbuf_t m_list) |
171 | { |
172 | #pragma unused(ifp, protocol_family) |
173 | mbuf_t m; |
174 | mbuf_t *tailptr = &m_list; |
175 | mbuf_t nextpkt; |
176 | |
177 | /* Strip ARP and non-IP packets out of the list */ |
178 | for (m = m_list; m; m = nextpkt) { |
179 | struct ether_header *eh = mbuf_pkthdr_header(m); |
180 | struct ifnet *mifp; |
181 | |
182 | /* |
183 | * Trust the ifp in the mbuf, rather than ifproto's |
184 | * since the packet could have been injected via |
185 | * a dlil_input_packet_list() using an ifp that is |
186 | * different than the one where the packet really |
187 | * came from. |
188 | */ |
189 | mifp = mbuf_pkthdr_rcvif(m); |
190 | |
191 | nextpkt = m->m_nextpkt; |
192 | |
193 | if (eh->ether_type == htons(ETHERTYPE_IP)) { |
194 | /* |
195 | * Update L2 reachability record, if present |
196 | * (and if not a broadcast sender). |
197 | */ |
198 | if (bcmp(eh->ether_shost, etherbroadcastaddr, |
199 | ETHER_ADDR_LEN) != 0) { |
200 | arp_llreach_set_reachable(mifp, eh->ether_shost, |
201 | ETHER_ADDR_LEN); |
202 | } |
203 | /* put this packet in the list */ |
204 | *tailptr = m; |
205 | tailptr = &m->m_nextpkt; |
206 | } else { |
207 | /* Pass ARP packets to arp input */ |
208 | m->m_nextpkt = NULL; |
209 | if (eh->ether_type == htons(ETHERTYPE_ARP)) |
210 | ether_inet_arp_input(mifp, m); |
211 | else |
212 | mbuf_freem(m); |
213 | } |
214 | } |
215 | |
216 | *tailptr = NULL; |
217 | |
218 | /* Pass IP list to ip input */ |
219 | if (m_list != NULL && proto_input(PF_INET, m_list) != 0) { |
220 | mbuf_freem_list(m_list); |
221 | } |
222 | |
223 | return (EJUSTRETURN); |
224 | } |
225 | |
226 | static errno_t |
227 | ether_inet_pre_output(ifnet_t ifp, protocol_family_t protocol_family, |
228 | mbuf_t *m0, const struct sockaddr *dst_netaddr, |
229 | void *route, char *type, char *edst) |
230 | { |
231 | #pragma unused(protocol_family) |
232 | struct mbuf *m = *m0; |
233 | const struct ether_header *eh; |
234 | errno_t result = 0; |
235 | |
236 | if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) |
237 | return (ENETDOWN); |
238 | |
239 | /* |
240 | * Tell ether_frameout it's ok to loop packet unless negated below. |
241 | */ |
242 | m->m_flags |= M_LOOP; |
243 | |
244 | switch (dst_netaddr->sa_family) { |
245 | case AF_INET: { |
246 | struct sockaddr_dl ll_dest; |
247 | |
248 | result = arp_lookup_ip(ifp, |
249 | (const struct sockaddr_in *)(uintptr_t)(size_t)dst_netaddr, |
250 | &ll_dest, sizeof (ll_dest), (route_t)route, *m0); |
251 | if (result == 0) { |
252 | u_int16_t ethertype_ip = htons(ETHERTYPE_IP); |
253 | |
254 | bcopy(LLADDR(&ll_dest), edst, ETHER_ADDR_LEN); |
255 | bcopy(ðertype_ip, type, sizeof (ethertype_ip)); |
256 | } |
257 | break; |
258 | } |
259 | |
260 | case pseudo_AF_HDRCMPLT: |
261 | case AF_UNSPEC: |
262 | m->m_flags &= ~M_LOOP; |
263 | eh = (const struct ether_header *)(uintptr_t)(size_t) |
264 | dst_netaddr->sa_data; |
265 | (void) memcpy(edst, eh->ether_dhost, 6); |
266 | bcopy(&eh->ether_type, type, sizeof (u_short)); |
267 | break; |
268 | |
269 | default: |
270 | printf("%s: can't handle af%d\n" , if_name(ifp), |
271 | dst_netaddr->sa_family); |
272 | |
273 | result = EAFNOSUPPORT; |
274 | break; |
275 | } |
276 | |
277 | return (result); |
278 | } |
279 | |
280 | static errno_t |
281 | ether_inet_resolve_multi(ifnet_t ifp, const struct sockaddr *proto_addr, |
282 | struct sockaddr_dl *out_ll, size_t ll_len) |
283 | { |
284 | static const size_t minsize = |
285 | offsetof(struct sockaddr_dl, sdl_data[0]) + ETHER_ADDR_LEN; |
286 | const struct sockaddr_in *sin = |
287 | (const struct sockaddr_in *)(uintptr_t)(size_t)proto_addr; |
288 | |
289 | if (proto_addr->sa_family != AF_INET) |
290 | return (EAFNOSUPPORT); |
291 | |
292 | if (proto_addr->sa_len < sizeof (struct sockaddr_in)) |
293 | return (EINVAL); |
294 | |
295 | if (ll_len < minsize) |
296 | return (EMSGSIZE); |
297 | |
298 | bzero(out_ll, minsize); |
299 | out_ll->sdl_len = minsize; |
300 | out_ll->sdl_family = AF_LINK; |
301 | out_ll->sdl_index = ifp->if_index; |
302 | out_ll->sdl_type = IFT_ETHER; |
303 | out_ll->sdl_nlen = 0; |
304 | out_ll->sdl_alen = ETHER_ADDR_LEN; |
305 | out_ll->sdl_slen = 0; |
306 | ETHER_MAP_IP_MULTICAST(&sin->sin_addr, LLADDR(out_ll)); |
307 | |
308 | return (0); |
309 | } |
310 | |
311 | static errno_t |
312 | ether_inet_prmod_ioctl(ifnet_t ifp, protocol_family_t protocol_family, |
313 | u_long command, void *data) |
314 | { |
315 | #pragma unused(protocol_family) |
316 | int error = 0; |
317 | |
318 | switch (command) { |
319 | case SIOCSIFADDR: /* struct ifaddr pointer */ |
320 | case SIOCAIFADDR: { /* struct ifaddr pointer */ |
321 | /* |
322 | * Note: caller of ifnet_ioctl() passes in pointer to |
323 | * struct ifaddr as parameter to SIOC{A,S}IFADDR, for |
324 | * legacy reasons. |
325 | */ |
326 | struct ifaddr *ifa = data; |
327 | |
328 | if (!(ifnet_flags(ifp) & IFF_RUNNING)) { |
329 | ifnet_set_flags(ifp, IFF_UP, IFF_UP); |
330 | ifnet_ioctl(ifp, 0, SIOCSIFFLAGS, NULL); |
331 | } |
332 | |
333 | if (ifaddr_address_family(ifa) != AF_INET) |
334 | break; |
335 | |
336 | inet_arp_init_ifaddr(ifp, ifa); |
337 | |
338 | if (command != SIOCSIFADDR) |
339 | break; |
340 | |
341 | /* |
342 | * Register new IP and MAC addresses with the kernel |
343 | * debugger if the interface is the same as was registered |
344 | * by IOKernelDebugger. If no interface was registered, |
345 | * fall back and just match against en0 interface. |
346 | * Do this only for the first address of the interface |
347 | * and not for aliases. |
348 | */ |
349 | if ((kdp_get_interface() != 0 && |
350 | kdp_get_interface() == ifp->if_softc) || |
351 | (kdp_get_interface() == 0 && ifp->if_unit == 0)) |
352 | kdp_set_ip_and_mac_addresses(&(IA_SIN(ifa)->sin_addr), |
353 | (struct ether_addr *)IF_LLADDR(ifp)); |
354 | break; |
355 | } |
356 | |
357 | case SIOCGIFADDR: { /* struct ifreq */ |
358 | struct ifreq *ifr = data; |
359 | ifnet_guarded_lladdr_copy_bytes(ifp, ifr->ifr_addr.sa_data, |
360 | ETHER_ADDR_LEN); |
361 | break; |
362 | } |
363 | |
364 | default: |
365 | error = EOPNOTSUPP; |
366 | break; |
367 | } |
368 | |
369 | return (error); |
370 | } |
371 | |
372 | static void |
373 | ether_inet_event(ifnet_t ifp, protocol_family_t protocol, |
374 | const struct kev_msg *event) |
375 | { |
376 | #pragma unused(protocol) |
377 | ifaddr_t *addresses; |
378 | |
379 | if (event->vendor_code != KEV_VENDOR_APPLE || |
380 | event->kev_class != KEV_NETWORK_CLASS || |
381 | event->kev_subclass != KEV_DL_SUBCLASS || |
382 | event->event_code != KEV_DL_LINK_ADDRESS_CHANGED) { |
383 | return; |
384 | } |
385 | |
386 | if (ifnet_get_address_list_family(ifp, &addresses, AF_INET) == 0) { |
387 | int i; |
388 | |
389 | for (i = 0; addresses[i] != NULL; i++) { |
390 | inet_arp_init_ifaddr(ifp, addresses[i]); |
391 | } |
392 | |
393 | ifnet_free_address_list(addresses); |
394 | } |
395 | } |
396 | |
397 | static errno_t |
398 | ether_inet_arp(ifnet_t ifp, u_short arpop, const struct sockaddr_dl *sender_hw, |
399 | const struct sockaddr *sender_proto, const struct sockaddr_dl *target_hw, |
400 | const struct sockaddr *target_proto) |
401 | { |
402 | mbuf_t m; |
403 | errno_t result; |
404 | struct ether_header *eh; |
405 | struct ether_arp *ea; |
406 | const struct sockaddr_in *sender_ip = |
407 | (const struct sockaddr_in *)(uintptr_t)(size_t)sender_proto; |
408 | const struct sockaddr_inarp *target_ip = |
409 | (const struct sockaddr_inarp *)(uintptr_t)(size_t)target_proto; |
410 | char *datap; |
411 | |
412 | if (target_ip == NULL) |
413 | return (EINVAL); |
414 | |
415 | if ((sender_ip && sender_ip->sin_family != AF_INET) || |
416 | target_ip->sin_family != AF_INET) |
417 | return (EAFNOSUPPORT); |
418 | |
419 | result = mbuf_gethdr(MBUF_DONTWAIT, MBUF_TYPE_DATA, &m); |
420 | if (result != 0) |
421 | return (result); |
422 | |
423 | mbuf_setlen(m, sizeof (*ea)); |
424 | mbuf_pkthdr_setlen(m, sizeof (*ea)); |
425 | |
426 | /* Move the data pointer in the mbuf to the end, aligned to 4 bytes */ |
427 | datap = mbuf_datastart(m); |
428 | datap += mbuf_trailingspace(m); |
429 | datap -= (((uintptr_t)datap) & 0x3); |
430 | mbuf_setdata(m, datap, sizeof (*ea)); |
431 | ea = mbuf_data(m); |
432 | |
433 | /* |
434 | * Prepend the ethernet header, we will send the raw frame; |
435 | * callee frees the original mbuf when allocation fails. |
436 | */ |
437 | result = mbuf_prepend(&m, sizeof (*eh), MBUF_DONTWAIT); |
438 | if (result != 0) |
439 | return (result); |
440 | |
441 | eh = mbuf_data(m); |
442 | eh->ether_type = htons(ETHERTYPE_ARP); |
443 | |
444 | #if CONFIG_MACF_NET |
445 | mac_mbuf_label_associate_linklayer(ifp, m); |
446 | #endif |
447 | |
448 | /* Fill out the arp header */ |
449 | ea->arp_pro = htons(ETHERTYPE_IP); |
450 | ea->arp_hln = sizeof (ea->arp_sha); |
451 | ea->arp_pln = sizeof (ea->arp_spa); |
452 | ea->arp_hrd = htons(ARPHRD_ETHER); |
453 | ea->arp_op = htons(arpop); |
454 | |
455 | /* Sender Hardware */ |
456 | if (sender_hw != NULL) { |
457 | bcopy(CONST_LLADDR(sender_hw), ea->arp_sha, |
458 | sizeof (ea->arp_sha)); |
459 | } else { |
460 | ifnet_lladdr_copy_bytes(ifp, ea->arp_sha, ETHER_ADDR_LEN); |
461 | } |
462 | ifnet_lladdr_copy_bytes(ifp, eh->ether_shost, sizeof (eh->ether_shost)); |
463 | |
464 | /* Sender IP */ |
465 | if (sender_ip != NULL) { |
466 | bcopy(&sender_ip->sin_addr, ea->arp_spa, sizeof (ea->arp_spa)); |
467 | } else { |
468 | struct ifaddr *ifa; |
469 | |
470 | /* Look for an IP address to use as our source */ |
471 | ifnet_lock_shared(ifp); |
472 | TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { |
473 | IFA_LOCK(ifa); |
474 | if (ifa->ifa_addr != NULL && |
475 | ifa->ifa_addr->sa_family == AF_INET) { |
476 | bcopy(&((struct sockaddr_in *)(void *) |
477 | ifa->ifa_addr)->sin_addr, ea->arp_spa, |
478 | sizeof (ea->arp_spa)); |
479 | IFA_UNLOCK(ifa); |
480 | break; |
481 | } |
482 | IFA_UNLOCK(ifa); |
483 | } |
484 | ifnet_lock_done(ifp); |
485 | |
486 | if (ifa == NULL) { |
487 | mbuf_freem(m); |
488 | return (ENXIO); |
489 | } |
490 | } |
491 | |
492 | /* Target Hardware */ |
493 | if (target_hw == NULL) { |
494 | bzero(ea->arp_tha, sizeof (ea->arp_tha)); |
495 | bcopy(etherbroadcastaddr, eh->ether_dhost, |
496 | sizeof (eh->ether_dhost)); |
497 | m->m_flags |= M_BCAST; |
498 | } else { |
499 | bcopy(CONST_LLADDR(target_hw), ea->arp_tha, |
500 | sizeof (ea->arp_tha)); |
501 | bcopy(CONST_LLADDR(target_hw), eh->ether_dhost, |
502 | sizeof (eh->ether_dhost)); |
503 | |
504 | if (bcmp(eh->ether_dhost, etherbroadcastaddr, |
505 | ETHER_ADDR_LEN) == 0) |
506 | m->m_flags |= M_BCAST; |
507 | } |
508 | |
509 | /* Target IP */ |
510 | bcopy(&target_ip->sin_addr, ea->arp_tpa, sizeof (ea->arp_tpa)); |
511 | |
512 | /* |
513 | * PKTF_{INET,INET6}_RESOLVE_RTR are mutually exclusive, so make |
514 | * sure only one of them is set (just in case.) |
515 | */ |
516 | m->m_pkthdr.pkt_flags &= ~(PKTF_INET6_RESOLVE | PKTF_RESOLVE_RTR); |
517 | m->m_pkthdr.pkt_flags |= PKTF_INET_RESOLVE; |
518 | /* |
519 | * If this is an ARP request for a (default) router, mark |
520 | * the packet accordingly so that the driver can find out, |
521 | * in case it needs to perform driver-specific action(s). |
522 | */ |
523 | if (arpop == ARPOP_REQUEST && (target_ip->sin_other & SIN_ROUTER)) |
524 | m->m_pkthdr.pkt_flags |= PKTF_RESOLVE_RTR; |
525 | |
526 | if (ifp->if_eflags & IFEF_TXSTART) { |
527 | /* |
528 | * Use control service class if the interface |
529 | * supports transmit-start model |
530 | */ |
531 | (void) m_set_service_class(m, MBUF_SC_CTL); |
532 | } |
533 | |
534 | ifnet_output_raw(ifp, PF_INET, m); |
535 | |
536 | return (0); |
537 | } |
538 | |
539 | errno_t |
540 | ether_attach_inet(struct ifnet *ifp, protocol_family_t proto_family) |
541 | { |
542 | #pragma unused(proto_family) |
543 | struct ifnet_attach_proto_param_v2 proto; |
544 | struct ifnet_demux_desc demux[2]; |
545 | u_short en_native = htons(ETHERTYPE_IP); |
546 | u_short arp_native = htons(ETHERTYPE_ARP); |
547 | errno_t error; |
548 | |
549 | bzero(&demux[0], sizeof (demux)); |
550 | demux[0].type = DLIL_DESC_ETYPE2; |
551 | demux[0].data = &en_native; |
552 | demux[0].datalen = sizeof (en_native); |
553 | demux[1].type = DLIL_DESC_ETYPE2; |
554 | demux[1].data = &arp_native; |
555 | demux[1].datalen = sizeof (arp_native); |
556 | |
557 | bzero(&proto, sizeof (proto)); |
558 | proto.demux_list = demux; |
559 | proto.demux_count = sizeof (demux) / sizeof (demux[0]); |
560 | proto.input = ether_inet_input; |
561 | proto.pre_output = ether_inet_pre_output; |
562 | proto.ioctl = ether_inet_prmod_ioctl; |
563 | proto.event = ether_inet_event; |
564 | proto.resolve = ether_inet_resolve_multi; |
565 | proto.send_arp = ether_inet_arp; |
566 | |
567 | error = ifnet_attach_protocol_v2(ifp, proto_family, &proto); |
568 | if (error && error != EEXIST) { |
569 | printf("WARNING: %s can't attach ip to %s\n" , __func__, |
570 | if_name(ifp)); |
571 | } |
572 | return (error); |
573 | } |
574 | |
575 | void |
576 | ether_detach_inet(struct ifnet *ifp, protocol_family_t proto_family) |
577 | { |
578 | (void) ifnet_detach_protocol(ifp, proto_family); |
579 | } |
580 | |