1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * Copyright (c) 2018 Andrey V. Elsukov <[email protected]>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $KAME: if_gif.c,v 1.87 2001/10/19 08:50:27 itojun Exp $
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 #include "opt_inet.h"
39 #include "opt_inet6.h"
40
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/lock.h>
45 #include <sys/malloc.h>
46 #include <sys/mbuf.h>
47 #include <sys/module.h>
48 #include <sys/rmlock.h>
49 #include <sys/socket.h>
50 #include <sys/sockio.h>
51 #include <sys/sx.h>
52 #include <sys/errno.h>
53 #include <sys/time.h>
54 #include <sys/sysctl.h>
55 #include <sys/syslog.h>
56 #include <sys/priv.h>
57 #include <sys/proc.h>
58 #include <sys/conf.h>
59 #include <machine/cpu.h>
60
61 #include <net/if.h>
62 #include <net/if_var.h>
63 #include <net/if_clone.h>
64 #include <net/if_types.h>
65 #include <net/netisr.h>
66 #include <net/route.h>
67 #include <net/bpf.h>
68 #include <net/vnet.h>
69
70 #include <netinet/in.h>
71 #include <netinet/in_systm.h>
72 #include <netinet/ip.h>
73 #include <netinet/ip_ecn.h>
74 #ifdef INET
75 #include <netinet/in_var.h>
76 #include <netinet/ip_var.h>
77 #endif /* INET */
78
79 #ifdef INET6
80 #ifndef INET
81 #include <netinet/in.h>
82 #endif
83 #include <netinet6/in6_var.h>
84 #include <netinet/ip6.h>
85 #include <netinet6/ip6_ecn.h>
86 #include <netinet6/ip6_var.h>
87 #endif /* INET6 */
88
89 #include <netinet/ip_encap.h>
90 #include <net/ethernet.h>
91 #include <net/if_bridgevar.h>
92 #include <net/if_gif.h>
93
94 #include <security/mac/mac_framework.h>
95
96 static const char gifname[] = "gif";
97
98 MALLOC_DEFINE(M_GIF, "gif", "Generic Tunnel Interface");
99 static struct sx gif_ioctl_sx;
100 SX_SYSINIT(gif_ioctl_sx, &gif_ioctl_sx, "gif_ioctl");
101
102 void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp, int af);
103 void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m, int af);
104 void (*ng_gif_attach_p)(struct ifnet *ifp);
105 void (*ng_gif_detach_p)(struct ifnet *ifp);
106
107 static void gif_delete_tunnel(struct gif_softc *);
108 static int gif_ioctl(struct ifnet *, u_long, caddr_t);
109 static int gif_transmit(struct ifnet *, struct mbuf *);
110 static void gif_qflush(struct ifnet *);
111 static int gif_clone_create(struct if_clone *, int, caddr_t);
112 static void gif_clone_destroy(struct ifnet *);
113 VNET_DEFINE_STATIC(struct if_clone *, gif_cloner);
114 #define V_gif_cloner VNET(gif_cloner)
115
116 SYSCTL_DECL(_net_link);
117 static SYSCTL_NODE(_net_link, IFT_GIF, gif, CTLFLAG_RW, 0,
118 "Generic Tunnel Interface");
119 #ifndef MAX_GIF_NEST
120 /*
121 * This macro controls the default upper limitation on nesting of gif tunnels.
122 * Since, setting a large value to this macro with a careless configuration
123 * may introduce system crash, we don't allow any nestings by default.
124 * If you need to configure nested gif tunnels, you can define this macro
125 * in your kernel configuration file. However, if you do so, please be
126 * careful to configure the tunnels so that it won't make a loop.
127 */
128 #define MAX_GIF_NEST 1
129 #endif
130 VNET_DEFINE_STATIC(int, max_gif_nesting) = MAX_GIF_NEST;
131 #define V_max_gif_nesting VNET(max_gif_nesting)
132 SYSCTL_INT(_net_link_gif, OID_AUTO, max_nesting, CTLFLAG_VNET | CTLFLAG_RW,
133 &VNET_NAME(max_gif_nesting), 0, "Max nested tunnels");
134
135 static int
gif_clone_create(struct if_clone * ifc,int unit,caddr_t params)136 gif_clone_create(struct if_clone *ifc, int unit, caddr_t params)
137 {
138 struct gif_softc *sc;
139
140 sc = malloc(sizeof(struct gif_softc), M_GIF, M_WAITOK | M_ZERO);
141 sc->gif_fibnum = curthread->td_proc->p_fibnum;
142 GIF2IFP(sc) = if_alloc(IFT_GIF);
143 GIF2IFP(sc)->if_softc = sc;
144 if_initname(GIF2IFP(sc), gifname, unit);
145
146 GIF2IFP(sc)->if_addrlen = 0;
147 GIF2IFP(sc)->if_mtu = GIF_MTU;
148 GIF2IFP(sc)->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
149 GIF2IFP(sc)->if_ioctl = gif_ioctl;
150 GIF2IFP(sc)->if_transmit = gif_transmit;
151 GIF2IFP(sc)->if_qflush = gif_qflush;
152 GIF2IFP(sc)->if_output = gif_output;
153 GIF2IFP(sc)->if_capabilities |= IFCAP_LINKSTATE;
154 GIF2IFP(sc)->if_capenable |= IFCAP_LINKSTATE;
155 if_attach(GIF2IFP(sc));
156 bpfattach(GIF2IFP(sc), DLT_NULL, sizeof(u_int32_t));
157 if (ng_gif_attach_p != NULL)
158 (*ng_gif_attach_p)(GIF2IFP(sc));
159
160 return (0);
161 }
162
163 static void
gif_clone_destroy(struct ifnet * ifp)164 gif_clone_destroy(struct ifnet *ifp)
165 {
166 struct gif_softc *sc;
167
168 sx_xlock(&gif_ioctl_sx);
169 sc = ifp->if_softc;
170 gif_delete_tunnel(sc);
171 if (ng_gif_detach_p != NULL)
172 (*ng_gif_detach_p)(ifp);
173 bpfdetach(ifp);
174 if_detach(ifp);
175 ifp->if_softc = NULL;
176 sx_xunlock(&gif_ioctl_sx);
177
178 GIF_WAIT();
179 if_free(ifp);
180 free(sc, M_GIF);
181 }
182
183 static void
vnet_gif_init(const void * unused __unused)184 vnet_gif_init(const void *unused __unused)
185 {
186
187 V_gif_cloner = if_clone_simple(gifname, gif_clone_create,
188 gif_clone_destroy, 0);
189 #ifdef INET
190 in_gif_init();
191 #endif
192 #ifdef INET6
193 in6_gif_init();
194 #endif
195 }
196 VNET_SYSINIT(vnet_gif_init, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY,
197 vnet_gif_init, NULL);
198
199 static void
vnet_gif_uninit(const void * unused __unused)200 vnet_gif_uninit(const void *unused __unused)
201 {
202
203 if_clone_detach(V_gif_cloner);
204 #ifdef INET
205 in_gif_uninit();
206 #endif
207 #ifdef INET6
208 in6_gif_uninit();
209 #endif
210 }
211 VNET_SYSUNINIT(vnet_gif_uninit, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY,
212 vnet_gif_uninit, NULL);
213
214 static int
gifmodevent(module_t mod,int type,void * data)215 gifmodevent(module_t mod, int type, void *data)
216 {
217
218 switch (type) {
219 case MOD_LOAD:
220 case MOD_UNLOAD:
221 break;
222 default:
223 return (EOPNOTSUPP);
224 }
225 return (0);
226 }
227
228 static moduledata_t gif_mod = {
229 "if_gif",
230 gifmodevent,
231 0
232 };
233
234 DECLARE_MODULE(if_gif, gif_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
235 MODULE_VERSION(if_gif, 1);
236
237 struct gif_list *
gif_hashinit(void)238 gif_hashinit(void)
239 {
240 struct gif_list *hash;
241 int i;
242
243 hash = malloc(sizeof(struct gif_list) * GIF_HASH_SIZE,
244 M_GIF, M_WAITOK);
245 for (i = 0; i < GIF_HASH_SIZE; i++)
246 CK_LIST_INIT(&hash[i]);
247
248 return (hash);
249 }
250
251 void
gif_hashdestroy(struct gif_list * hash)252 gif_hashdestroy(struct gif_list *hash)
253 {
254
255 free(hash, M_GIF);
256 }
257
258 #define MTAG_GIF 1080679712
259 static int
gif_transmit(struct ifnet * ifp,struct mbuf * m)260 gif_transmit(struct ifnet *ifp, struct mbuf *m)
261 {
262 struct gif_softc *sc;
263 struct etherip_header *eth;
264 #ifdef INET
265 struct ip *ip;
266 #endif
267 #ifdef INET6
268 struct ip6_hdr *ip6;
269 uint32_t t;
270 #endif
271 uint32_t af;
272 uint8_t proto, ecn;
273 int error;
274
275 GIF_RLOCK();
276 #ifdef MAC
277 error = mac_ifnet_check_transmit(ifp, m);
278 if (error) {
279 m_freem(m);
280 goto err;
281 }
282 #endif
283 error = ENETDOWN;
284 sc = ifp->if_softc;
285 if ((ifp->if_flags & IFF_MONITOR) != 0 ||
286 (ifp->if_flags & IFF_UP) == 0 ||
287 (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
288 sc->gif_family == 0 ||
289 (error = if_tunnel_check_nesting(ifp, m, MTAG_GIF,
290 V_max_gif_nesting)) != 0) {
291 m_freem(m);
292 goto err;
293 }
294 /* Now pull back the af that we stashed in the csum_data. */
295 if (ifp->if_bridge)
296 af = AF_LINK;
297 else
298 af = m->m_pkthdr.csum_data;
299 m->m_flags &= ~(M_BCAST|M_MCAST);
300 M_SETFIB(m, sc->gif_fibnum);
301 BPF_MTAP2(ifp, &af, sizeof(af), m);
302 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
303 if_inc_counter(ifp, IFCOUNTER_OBYTES, m->m_pkthdr.len);
304 /* inner AF-specific encapsulation */
305 ecn = 0;
306 switch (af) {
307 #ifdef INET
308 case AF_INET:
309 proto = IPPROTO_IPV4;
310 if (m->m_len < sizeof(struct ip))
311 m = m_pullup(m, sizeof(struct ip));
312 if (m == NULL) {
313 error = ENOBUFS;
314 goto err;
315 }
316 ip = mtod(m, struct ip *);
317 ip_ecn_ingress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
318 ECN_NOCARE, &ecn, &ip->ip_tos);
319 break;
320 #endif
321 #ifdef INET6
322 case AF_INET6:
323 proto = IPPROTO_IPV6;
324 if (m->m_len < sizeof(struct ip6_hdr))
325 m = m_pullup(m, sizeof(struct ip6_hdr));
326 if (m == NULL) {
327 error = ENOBUFS;
328 goto err;
329 }
330 t = 0;
331 ip6 = mtod(m, struct ip6_hdr *);
332 ip6_ecn_ingress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
333 ECN_NOCARE, &t, &ip6->ip6_flow);
334 ecn = (ntohl(t) >> 20) & 0xff;
335 break;
336 #endif
337 case AF_LINK:
338 proto = IPPROTO_ETHERIP;
339 M_PREPEND(m, sizeof(struct etherip_header), M_NOWAIT);
340 if (m == NULL) {
341 error = ENOBUFS;
342 goto err;
343 }
344 eth = mtod(m, struct etherip_header *);
345 eth->eip_resvh = 0;
346 eth->eip_ver = ETHERIP_VERSION;
347 eth->eip_resvl = 0;
348 break;
349 default:
350 error = EAFNOSUPPORT;
351 m_freem(m);
352 goto err;
353 }
354 /* XXX should we check if our outer source is legal? */
355 /* dispatch to output logic based on outer AF */
356 switch (sc->gif_family) {
357 #ifdef INET
358 case AF_INET:
359 error = in_gif_output(ifp, m, proto, ecn);
360 break;
361 #endif
362 #ifdef INET6
363 case AF_INET6:
364 error = in6_gif_output(ifp, m, proto, ecn);
365 break;
366 #endif
367 default:
368 m_freem(m);
369 }
370 err:
371 if (error)
372 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
373 GIF_RUNLOCK();
374 return (error);
375 }
376
377 static void
gif_qflush(struct ifnet * ifp __unused)378 gif_qflush(struct ifnet *ifp __unused)
379 {
380
381 }
382
383
384 int
gif_output(struct ifnet * ifp,struct mbuf * m,const struct sockaddr * dst,struct route * ro)385 gif_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst,
386 struct route *ro)
387 {
388 uint32_t af;
389
390 if (dst->sa_family == AF_UNSPEC)
391 bcopy(dst->sa_data, &af, sizeof(af));
392 else
393 af = dst->sa_family;
394 /*
395 * Now save the af in the inbound pkt csum data, this is a cheat since
396 * we are using the inbound csum_data field to carry the af over to
397 * the gif_transmit() routine, avoiding using yet another mtag.
398 */
399 m->m_pkthdr.csum_data = af;
400 return (ifp->if_transmit(ifp, m));
401 }
402
403 void
gif_input(struct mbuf * m,struct ifnet * ifp,int proto,uint8_t ecn)404 gif_input(struct mbuf *m, struct ifnet *ifp, int proto, uint8_t ecn)
405 {
406 struct etherip_header *eip;
407 #ifdef INET
408 struct ip *ip;
409 #endif
410 #ifdef INET6
411 struct ip6_hdr *ip6;
412 uint32_t t;
413 #endif
414 struct ether_header *eh;
415 struct ifnet *oldifp;
416 int isr, n, af;
417
418 if (ifp == NULL) {
419 /* just in case */
420 m_freem(m);
421 return;
422 }
423 m->m_pkthdr.rcvif = ifp;
424 m_clrprotoflags(m);
425 switch (proto) {
426 #ifdef INET
427 case IPPROTO_IPV4:
428 af = AF_INET;
429 if (m->m_len < sizeof(struct ip))
430 m = m_pullup(m, sizeof(struct ip));
431 if (m == NULL)
432 goto drop;
433 ip = mtod(m, struct ip *);
434 if (ip_ecn_egress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
435 ECN_NOCARE, &ecn, &ip->ip_tos) == 0) {
436 m_freem(m);
437 goto drop;
438 }
439 break;
440 #endif
441 #ifdef INET6
442 case IPPROTO_IPV6:
443 af = AF_INET6;
444 if (m->m_len < sizeof(struct ip6_hdr))
445 m = m_pullup(m, sizeof(struct ip6_hdr));
446 if (m == NULL)
447 goto drop;
448 t = htonl((uint32_t)ecn << 20);
449 ip6 = mtod(m, struct ip6_hdr *);
450 if (ip6_ecn_egress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
451 ECN_NOCARE, &t, &ip6->ip6_flow) == 0) {
452 m_freem(m);
453 goto drop;
454 }
455 break;
456 #endif
457 case IPPROTO_ETHERIP:
458 af = AF_LINK;
459 break;
460 default:
461 m_freem(m);
462 goto drop;
463 }
464
465 #ifdef MAC
466 mac_ifnet_create_mbuf(ifp, m);
467 #endif
468
469 if (bpf_peers_present(ifp->if_bpf)) {
470 uint32_t af1 = af;
471 bpf_mtap2(ifp->if_bpf, &af1, sizeof(af1), m);
472 }
473
474 if ((ifp->if_flags & IFF_MONITOR) != 0) {
475 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
476 if_inc_counter(ifp, IFCOUNTER_IBYTES, m->m_pkthdr.len);
477 m_freem(m);
478 return;
479 }
480
481 if (ng_gif_input_p != NULL) {
482 (*ng_gif_input_p)(ifp, &m, af);
483 if (m == NULL)
484 goto drop;
485 }
486
487 /*
488 * Put the packet to the network layer input queue according to the
489 * specified address family.
490 * Note: older versions of gif_input directly called network layer
491 * input functions, e.g. ip6_input, here. We changed the policy to
492 * prevent too many recursive calls of such input functions, which
493 * might cause kernel panic. But the change may introduce another
494 * problem; if the input queue is full, packets are discarded.
495 * The kernel stack overflow really happened, and we believed
496 * queue-full rarely occurs, so we changed the policy.
497 */
498 switch (af) {
499 #ifdef INET
500 case AF_INET:
501 isr = NETISR_IP;
502 break;
503 #endif
504 #ifdef INET6
505 case AF_INET6:
506 isr = NETISR_IPV6;
507 break;
508 #endif
509 case AF_LINK:
510 n = sizeof(struct etherip_header) +
511 sizeof(struct ether_header);
512 if (n > m->m_len)
513 m = m_pullup(m, n);
514 if (m == NULL)
515 goto drop;
516 eip = mtod(m, struct etherip_header *);
517 if (eip->eip_ver != ETHERIP_VERSION) {
518 /* discard unknown versions */
519 m_freem(m);
520 goto drop;
521 }
522 m_adj(m, sizeof(struct etherip_header));
523
524 m->m_flags &= ~(M_BCAST|M_MCAST);
525 m->m_pkthdr.rcvif = ifp;
526
527 if (ifp->if_bridge) {
528 oldifp = ifp;
529 eh = mtod(m, struct ether_header *);
530 if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
531 if (ETHER_IS_BROADCAST(eh->ether_dhost))
532 m->m_flags |= M_BCAST;
533 else
534 m->m_flags |= M_MCAST;
535 if_inc_counter(ifp, IFCOUNTER_IMCASTS, 1);
536 }
537 BRIDGE_INPUT(ifp, m);
538
539 if (m != NULL && ifp != oldifp) {
540 /*
541 * The bridge gave us back itself or one of the
542 * members for which the frame is addressed.
543 */
544 ether_demux(ifp, m);
545 return;
546 }
547 }
548 if (m != NULL)
549 m_freem(m);
550 return;
551
552 default:
553 if (ng_gif_input_orphan_p != NULL)
554 (*ng_gif_input_orphan_p)(ifp, m, af);
555 else
556 m_freem(m);
557 return;
558 }
559
560 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
561 if_inc_counter(ifp, IFCOUNTER_IBYTES, m->m_pkthdr.len);
562 M_SETFIB(m, ifp->if_fib);
563 netisr_dispatch(isr, m);
564 return;
565 drop:
566 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
567 }
568
569 static int
gif_ioctl(struct ifnet * ifp,u_long cmd,caddr_t data)570 gif_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
571 {
572 struct ifreq *ifr = (struct ifreq*)data;
573 struct gif_softc *sc;
574 u_int options;
575 int error;
576
577 switch (cmd) {
578 case SIOCSIFADDR:
579 ifp->if_flags |= IFF_UP;
580 case SIOCADDMULTI:
581 case SIOCDELMULTI:
582 case SIOCGIFMTU:
583 case SIOCSIFFLAGS:
584 return (0);
585 case SIOCSIFMTU:
586 if (ifr->ifr_mtu < GIF_MTU_MIN ||
587 ifr->ifr_mtu > GIF_MTU_MAX)
588 return (EINVAL);
589 else
590 ifp->if_mtu = ifr->ifr_mtu;
591 return (0);
592 }
593 sx_xlock(&gif_ioctl_sx);
594 sc = ifp->if_softc;
595 if (sc == NULL) {
596 error = ENXIO;
597 goto bad;
598 }
599 error = 0;
600 switch (cmd) {
601 case SIOCDIFPHYADDR:
602 if (sc->gif_family == 0)
603 break;
604 gif_delete_tunnel(sc);
605 break;
606 #ifdef INET
607 case SIOCSIFPHYADDR:
608 case SIOCGIFPSRCADDR:
609 case SIOCGIFPDSTADDR:
610 error = in_gif_ioctl(sc, cmd, data);
611 break;
612 #endif
613 #ifdef INET6
614 case SIOCSIFPHYADDR_IN6:
615 case SIOCGIFPSRCADDR_IN6:
616 case SIOCGIFPDSTADDR_IN6:
617 error = in6_gif_ioctl(sc, cmd, data);
618 break;
619 #endif
620 case SIOCGTUNFIB:
621 ifr->ifr_fib = sc->gif_fibnum;
622 break;
623 case SIOCSTUNFIB:
624 if ((error = priv_check(curthread, PRIV_NET_GIF)) != 0)
625 break;
626 if (ifr->ifr_fib >= rt_numfibs)
627 error = EINVAL;
628 else
629 sc->gif_fibnum = ifr->ifr_fib;
630 break;
631 case GIFGOPTS:
632 options = sc->gif_options;
633 error = copyout(&options, ifr_data_get_ptr(ifr),
634 sizeof(options));
635 break;
636 case GIFSOPTS:
637 if ((error = priv_check(curthread, PRIV_NET_GIF)) != 0)
638 break;
639 error = copyin(ifr_data_get_ptr(ifr), &options,
640 sizeof(options));
641 if (error)
642 break;
643 if (options & ~GIF_OPTMASK) {
644 error = EINVAL;
645 break;
646 }
647 if (sc->gif_options != options) {
648 switch (sc->gif_family) {
649 #ifdef INET
650 case AF_INET:
651 error = in_gif_setopts(sc, options);
652 break;
653 #endif
654 #ifdef INET6
655 case AF_INET6:
656 error = in6_gif_setopts(sc, options);
657 break;
658 #endif
659 default:
660 /* No need to invoke AF-handler */
661 sc->gif_options = options;
662 }
663 }
664 break;
665 default:
666 error = EINVAL;
667 break;
668 }
669 if (error == 0 && sc->gif_family != 0) {
670 if (
671 #ifdef INET
672 cmd == SIOCSIFPHYADDR ||
673 #endif
674 #ifdef INET6
675 cmd == SIOCSIFPHYADDR_IN6 ||
676 #endif
677 0) {
678 if_link_state_change(ifp, LINK_STATE_UP);
679 }
680 }
681 bad:
682 sx_xunlock(&gif_ioctl_sx);
683 return (error);
684 }
685
686 static void
gif_delete_tunnel(struct gif_softc * sc)687 gif_delete_tunnel(struct gif_softc *sc)
688 {
689
690 sx_assert(&gif_ioctl_sx, SA_XLOCKED);
691 if (sc->gif_family != 0) {
692 CK_LIST_REMOVE(sc, srchash);
693 CK_LIST_REMOVE(sc, chain);
694 /* Wait until it become safe to free gif_hdr */
695 GIF_WAIT();
696 free(sc->gif_hdr, M_GIF);
697 }
698 sc->gif_family = 0;
699 GIF2IFP(sc)->if_drv_flags &= ~IFF_DRV_RUNNING;
700 if_link_state_change(GIF2IFP(sc), LINK_STATE_DOWN);
701 }
702
703