1 /* $NetBSD: keysock.c,v 1.11 2006/10/13 20:53:59 christos Exp $ */
2 /* $FreeBSD: src/sys/netipsec/keysock.c,v 1.3.2.1 2003/01/24 05:11:36 sam Exp $ */
3 /* $KAME: keysock.c,v 1.25 2001/08/13 20:07:41 itojun Exp $ */
4
5 /*
6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the project 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.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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
31 * SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: keysock.c,v 1.11 2006/10/13 20:53:59 christos Exp $");
36
37 #include "opt_ipsec.h"
38
39 /* This code has derived from sys/net/rtsock.c on FreeBSD2.2.5 */
40
41 #include <sys/types.h>
42 #include <sys/param.h>
43 #include <sys/domain.h>
44 #include <sys/errno.h>
45 #include <sys/kernel.h>
46 #include <sys/malloc.h>
47 #include <sys/mbuf.h>
48 #include <sys/protosw.h>
49 #include <sys/signalvar.h>
50 #include <sys/socket.h>
51 #include <sys/socketvar.h>
52 #include <sys/sysctl.h>
53 #include <sys/systm.h>
54
55 #include <net/raw_cb.h>
56 #include <net/route.h>
57
58 #include <net/pfkeyv2.h>
59 #include <netipsec/key.h>
60 #include <netipsec/keysock.h>
61 #include <netipsec/key_debug.h>
62
63 #include <netipsec/ipsec_osdep.h>
64
65 #include <machine/stdarg.h>
66
67 typedef int pr_output_t (struct mbuf *, struct socket *);
68
69 struct key_cb {
70 int key_count;
71 int any_count;
72 };
73 static struct key_cb key_cb;
74
75 static struct sockaddr key_dst = {
76 .sa_len = 2,
77 .sa_family = PF_KEY,
78 };
79 static struct sockaddr key_src = {
80 .sa_len = 2,
81 .sa_family = PF_KEY,
82 };
83
84
85 static int key_sendup0 __P((struct rawcb *, struct mbuf *, int, int));
86
87 struct pfkeystat pfkeystat;
88
89 int key_registered_sb_max = (NMBCLUSTERS * MHLEN); /* XXX arbitrary */
90
91 /* XXX sysctl */
92 #ifdef __FreeBSD__
93 SYSCTL_INT(_net_key, OID_AUTO, registered_sbmax, CTLFLAG_RD,
94 &key_registered_sb_max , 0, "Maximum kernel-to-user PFKEY datagram size");
95 #endif
96
97 /*
98 * key_output()
99 */
100 int
101 key_output(struct mbuf *m, ...)
102 {
103 struct sadb_msg *msg;
104 int len, error = 0;
105 int s;
106 struct socket *so;
107 va_list ap;
108
109 va_start(ap, m);
110 so = va_arg(ap, struct socket *);
111 va_end(ap);
112
113 if (m == 0)
114 panic("key_output: NULL pointer was passed");
115
116 pfkeystat.out_total++;
117 pfkeystat.out_bytes += m->m_pkthdr.len;
118
119 len = m->m_pkthdr.len;
120 if (len < sizeof(struct sadb_msg)) {
121 pfkeystat.out_tooshort++;
122 error = EINVAL;
123 goto end;
124 }
125
126 if (m->m_len < sizeof(struct sadb_msg)) {
127 if ((m = m_pullup(m, sizeof(struct sadb_msg))) == 0) {
128 pfkeystat.out_nomem++;
129 error = ENOBUFS;
130 goto end;
131 }
132 }
133
134 if ((m->m_flags & M_PKTHDR) == 0)
135 panic("key_output: not M_PKTHDR ??");
136
137 KEYDEBUG(KEYDEBUG_KEY_DUMP, kdebug_mbuf(m));
138
139 msg = mtod(m, struct sadb_msg *);
140 pfkeystat.out_msgtype[msg->sadb_msg_type]++;
141 if (len != PFKEY_UNUNIT64(msg->sadb_msg_len)) {
142 pfkeystat.out_invlen++;
143 error = EINVAL;
144 goto end;
145 }
146
147 /*XXX giant lock*/
148 s = splsoftnet();
149 error = key_parse(m, so);
150 m = NULL;
151 splx(s);
152 end:
153 if (m)
154 m_freem(m);
155 return error;
156 }
157
158 /*
159 * send message to the socket.
160 */
161 static int
162 key_sendup0(
163 struct rawcb *rp,
164 struct mbuf *m,
165 int promisc,
166 int sbprio
167 )
168 {
169 int error;
170 int ok;
171
172 if (promisc) {
173 struct sadb_msg *pmsg;
174
175 M_PREPEND(m, sizeof(struct sadb_msg), M_DONTWAIT);
176 if (m && m->m_len < sizeof(struct sadb_msg))
177 m = m_pullup(m, sizeof(struct sadb_msg));
178 if (!m) {
179 pfkeystat.in_nomem++;
180 m_freem(m);
181 return ENOBUFS;
182 }
183 m->m_pkthdr.len += sizeof(*pmsg);
184
185 pmsg = mtod(m, struct sadb_msg *);
186 bzero(pmsg, sizeof(*pmsg));
187 pmsg->sadb_msg_version = PF_KEY_V2;
188 pmsg->sadb_msg_type = SADB_X_PROMISC;
189 pmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
190 /* pid and seq? */
191
192 pfkeystat.in_msgtype[pmsg->sadb_msg_type]++;
193 }
194
195 if (sbprio == 0)
196 ok = sbappendaddr(&rp->rcb_socket->so_rcv,
197 (struct sockaddr *)&key_src, m, NULL);
198 else
199 ok = sbappendaddrchain(&rp->rcb_socket->so_rcv,
200 (struct sockaddr *)&key_src, m, sbprio);
201
202 if (!ok) {
203 pfkeystat.in_nomem++;
204 m_freem(m);
205 error = ENOBUFS;
206 } else
207 error = 0;
208 sorwakeup(rp->rcb_socket);
209 return error;
210 }
211
212 /* XXX this interface should be obsoleted. */
213 int
214 key_sendup(so, msg, len, target)
215 struct socket *so;
216 struct sadb_msg *msg;
217 u_int len;
218 int target; /*target of the resulting message*/
219 {
220 struct mbuf *m, *n, *mprev;
221 int tlen;
222
223 /* sanity check */
224 if (so == 0 || msg == 0)
225 panic("key_sendup: NULL pointer was passed");
226
227 KEYDEBUG(KEYDEBUG_KEY_DUMP,
228 printf("key_sendup: \n");
229 kdebug_sadb(msg));
230
231 /*
232 * we increment statistics here, just in case we have ENOBUFS
233 * in this function.
234 */
235 pfkeystat.in_total++;
236 pfkeystat.in_bytes += len;
237 pfkeystat.in_msgtype[msg->sadb_msg_type]++;
238
239 /*
240 * Get mbuf chain whenever possible (not clusters),
241 * to save socket buffer. We'll be generating many SADB_ACQUIRE
242 * messages to listening key sockets. If we simply allocate clusters,
243 * sbappendaddr() will raise ENOBUFS due to too little sbspace().
244 * sbspace() computes # of actual data bytes AND mbuf region.
245 *
246 * TODO: SADB_ACQUIRE filters should be implemented.
247 */
248 tlen = len;
249 m = mprev = NULL;
250 while (tlen > 0) {
251 if (tlen == len) {
252 MGETHDR(n, M_DONTWAIT, MT_DATA);
253 n->m_len = MHLEN;
254 } else {
255 MGET(n, M_DONTWAIT, MT_DATA);
256 n->m_len = MLEN;
257 }
258 if (!n) {
259 pfkeystat.in_nomem++;
260 return ENOBUFS;
261 }
262 if (tlen >= MCLBYTES) { /*XXX better threshold? */
263 MCLGET(n, M_DONTWAIT);
264 if ((n->m_flags & M_EXT) == 0) {
265 m_free(n);
266 m_freem(m);
267 pfkeystat.in_nomem++;
268 return ENOBUFS;
269 }
270 n->m_len = MCLBYTES;
271 }
272
273 if (tlen < n->m_len)
274 n->m_len = tlen;
275 n->m_next = NULL;
276 if (m == NULL)
277 m = mprev = n;
278 else {
279 mprev->m_next = n;
280 mprev = n;
281 }
282 tlen -= n->m_len;
283 n = NULL;
284 }
285 m->m_pkthdr.len = len;
286 m->m_pkthdr.rcvif = NULL;
287 m_copyback(m, 0, len, (caddr_t)msg);
288
289 /* avoid duplicated statistics */
290 pfkeystat.in_total--;
291 pfkeystat.in_bytes -= len;
292 pfkeystat.in_msgtype[msg->sadb_msg_type]--;
293
294 return key_sendup_mbuf(so, m, target);
295 }
296
297 /* so can be NULL if target != KEY_SENDUP_ONE */
298 int
299 key_sendup_mbuf(so, m, target /*, sbprio */)
300 struct socket *so;
301 struct mbuf *m;
302 int target;
303 {
304 struct mbuf *n;
305 struct keycb *kp;
306 int sendup;
307 struct rawcb *rp;
308 int error = 0;
309 int sbprio = 0; /* XXX should be a parameter */
310
311 if (m == NULL)
312 panic("key_sendup_mbuf: NULL pointer was passed");
313 if (so == NULL && target == KEY_SENDUP_ONE)
314 panic("key_sendup_mbuf: NULL pointer was passed");
315
316 /*
317 * RFC 2367 says ACQUIRE and other kernel-generated messages
318 * are special. We treat all KEY_SENDUP_REGISTERED messages
319 * as special, delivering them to all registered sockets
320 * even if the socket is at or above its so->so_rcv.sb_max limits.
321 * The only constraint is that the so_rcv data fall below
322 * key_registered_sb_max.
323 * Doing that check here avoids reworking every key_sendup_mbuf()
324 * in the short term. . The rework will be done after a technical
325 * conensus that this approach is appropriate.
326 */
327 if (target == KEY_SENDUP_REGISTERED) {
328 sbprio = SB_PRIO_BESTEFFORT;
329 }
330
331 pfkeystat.in_total++;
332 pfkeystat.in_bytes += m->m_pkthdr.len;
333 if (m->m_len < sizeof(struct sadb_msg)) {
334 #if 1
335 m = m_pullup(m, sizeof(struct sadb_msg));
336 if (m == NULL) {
337 pfkeystat.in_nomem++;
338 return ENOBUFS;
339 }
340 #else
341 /* don't bother pulling it up just for stats */
342 #endif
343 }
344 if (m->m_len >= sizeof(struct sadb_msg)) {
345 struct sadb_msg *msg;
346 msg = mtod(m, struct sadb_msg *);
347 pfkeystat.in_msgtype[msg->sadb_msg_type]++;
348 }
349
350 LIST_FOREACH(rp, &rawcb_list, rcb_list)
351 {
352 struct socket * kso = rp->rcb_socket;
353 if (rp->rcb_proto.sp_family != PF_KEY)
354 continue;
355 if (rp->rcb_proto.sp_protocol
356 && rp->rcb_proto.sp_protocol != PF_KEY_V2) {
357 continue;
358 }
359
360 kp = (struct keycb *)rp;
361
362 /*
363 * If you are in promiscuous mode, and when you get broadcasted
364 * reply, you'll get two PF_KEY messages.
365 * (based on pf_key@inner.net message on 14 Oct 1998)
366 */
367 if (((struct keycb *)rp)->kp_promisc) {
368 if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
369 (void)key_sendup0(rp, n, 1, 0);
370 n = NULL;
371 }
372 }
373
374 /* the exact target will be processed later */
375 if (so && sotorawcb(so) == rp)
376 continue;
377
378 sendup = 0;
379 switch (target) {
380 case KEY_SENDUP_ONE:
381 /* the statement has no effect */
382 if (so && sotorawcb(so) == rp)
383 sendup++;
384 break;
385 case KEY_SENDUP_ALL:
386 sendup++;
387 break;
388 case KEY_SENDUP_REGISTERED:
389 if (kp->kp_registered) {
390 if (kso->so_rcv.sb_cc <= key_registered_sb_max)
391 sendup++;
392 else
393 printf("keysock: "
394 "registered sendup dropped, "
395 "sb_cc %ld max %d\n",
396 kso->so_rcv.sb_cc,
397 key_registered_sb_max);
398 }
399 break;
400 }
401 pfkeystat.in_msgtarget[target]++;
402
403 if (!sendup)
404 continue;
405
406 if ((n = m_copy(m, 0, (int)M_COPYALL)) == NULL) {
407 m_freem(m);
408 pfkeystat.in_nomem++;
409 return ENOBUFS;
410 }
411
412 if ((error = key_sendup0(rp, n, 0, 0)) != 0) {
413 m_freem(m);
414 return error;
415 }
416
417 n = NULL;
418 }
419
420 /* The 'later' time for processing the exact target has arrived */
421 if (so) {
422 error = key_sendup0(sotorawcb(so), m, 0, sbprio);
423 m = NULL;
424 } else {
425 error = 0;
426 m_freem(m);
427 }
428 return error;
429 }
430
431 #ifdef __FreeBSD__
432
433 /*
434 * key_abort()
435 * derived from net/rtsock.c:rts_abort()
436 */
437 static int
438 key_abort(struct socket *so)
439 {
440 int s, error;
441 s = splnet(); /* FreeBSD */
442 error = raw_usrreqs.pru_abort(so);
443 splx(s);
444 return error;
445 }
446
447 /*
448 * key_attach()
449 * derived from net/rtsock.c:rts_attach()
450 */
451 static int
452 key_attach(struct socket *so, int proto, struct proc *td)
453 {
454 struct keycb *kp;
455 int s, error;
456
457 if (sotorawcb(so) != 0)
458 return EISCONN; /* XXX panic? */
459 kp = (struct keycb *)malloc(sizeof *kp, M_PCB, M_WAITOK|M_ZERO); /* XXX */
460 if (kp == 0)
461 return ENOBUFS;
462
463 /*
464 * The spl[soft]net() is necessary to block protocols from sending
465 * error notifications (like RTM_REDIRECT or RTM_LOSING) while
466 * this PCB is extant but incompletely initialized.
467 * Probably we should try to do more of this work beforehand and
468 * eliminate the spl.
469 */
470 s = splnet(); /* FreeBSD */
471 so->so_pcb = (caddr_t)kp;
472 error = raw_usrreqs.pru_attach(so, proto, td);
473 kp = (struct keycb *)sotorawcb(so);
474 if (error) {
475 free(kp, M_PCB);
476 so->so_pcb = (caddr_t) 0;
477 splx(s);
478 return error;
479 }
480
481 kp->kp_promisc = kp->kp_registered = 0;
482
483 if (kp->kp_raw.rcb_proto.sp_protocol == PF_KEY) /* XXX: AF_KEY */
484 key_cb.key_count++;
485 key_cb.any_count++;
486 kp->kp_raw.rcb_laddr = &key_src;
487 kp->kp_raw.rcb_faddr = &key_dst;
488 soisconnected(so);
489 so->so_options |= SO_USELOOPBACK;
490
491 splx(s);
492 return 0;
493 }
494
495 /*
496 * key_bind()
497 * derived from net/rtsock.c:rts_bind()
498 */
499 static int
500 key_bind(struct socket *so, struct sockaddr *nam, struct proc *td)
501 {
502 int s, error;
503 s = splnet(); /* FreeBSD */
504 error = raw_usrreqs.pru_bind(so, nam, td); /* xxx just EINVAL */
505 splx(s);
506 return error;
507 }
508
509 /*
510 * key_connect()
511 * derived from net/rtsock.c:rts_connect()
512 */
513 static int
514 key_connect(struct socket *so, struct sockaddr *nam, struct proc *td)
515 {
516 int s, error;
517 s = splnet(); /* FreeBSD */
518 error = raw_usrreqs.pru_connect(so, nam, td); /* XXX just EINVAL */
519 splx(s);
520 return error;
521 }
522
523 /*
524 * key_detach()
525 * derived from net/rtsock.c:rts_detach()
526 */
527 static int
528 key_detach(struct socket *so)
529 {
530 struct keycb *kp = (struct keycb *)sotorawcb(so);
531 int s, error;
532
533 s = splnet(); /* FreeBSD */
534 if (kp != 0) {
535 if (kp->kp_raw.rcb_proto.sp_protocol
536 == PF_KEY) /* XXX: AF_KEY */
537 key_cb.key_count--;
538 key_cb.any_count--;
539
540 key_freereg(so);
541 }
542 error = raw_usrreqs.pru_detach(so);
543 splx(s);
544 return error;
545 }
546
547 /*
548 * key_disconnect()
549 * derived from net/rtsock.c:key_disconnect()
550 */
551 static int
552 key_disconnect(struct socket *so)
553 {
554 int s, error;
555 s = splnet(); /* FreeBSD */
556 error = raw_usrreqs.pru_disconnect(so);
557 splx(s);
558 return error;
559 }
560
561 /*
562 * key_peeraddr()
563 * derived from net/rtsock.c:rts_peeraddr()
564 */
565 static int
566 key_peeraddr(struct socket *so, struct sockaddr **nam)
567 {
568 int s, error;
569 s = splnet(); /* FreeBSD */
570 error = raw_usrreqs.pru_peeraddr(so, nam);
571 splx(s);
572 return error;
573 }
574
575 /*
576 * key_send()
577 * derived from net/rtsock.c:rts_send()
578 */
579 static int
580 key_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
581 struct mbuf *control, struct proc *td)
582 {
583 int s, error;
584 s = splnet(); /* FreeBSD */
585 error = raw_usrreqs.pru_send(so, flags, m, nam, control, td);
586 splx(s);
587 return error;
588 }
589
590 /*
591 * key_shutdown()
592 * derived from net/rtsock.c:rts_shutdown()
593 */
594 static int
595 key_shutdown(struct socket *so)
596 {
597 int s, error;
598 s = splnet(); /* FreeBSD */
599 error = raw_usrreqs.pru_shutdown(so);
600 splx(s);
601 return error;
602 }
603
604 /*
605 * key_sockaddr()
606 * derived from net/rtsock.c:rts_sockaddr()
607 */
608 static int
609 key_sockaddr(struct socket *so, struct sockaddr **nam)
610 {
611 int s, error;
612 s = splnet(); /* FreeBSD */
613 error = raw_usrreqs.pru_sockaddr(so, nam);
614 splx(s);
615 return error;
616 }
617 #else /*!__FreeBSD__ -- traditional proto_usrreq() switch */
618
619 /*
620 * key_usrreq()
621 * derived from net/rtsock.c:route_usrreq()
622 */
623 int
624 key_usrreq(so, req, m, nam, control, l)
625 struct socket *so;
626 int req;
627 struct mbuf *m, *nam, *control;
628 struct lwp *l;
629 {
630 int error = 0;
631 struct keycb *kp = (struct keycb *)sotorawcb(so);
632 int s;
633
634 s = splsoftnet();
635 if (req == PRU_ATTACH) {
636 kp = (struct keycb *)malloc(sizeof(*kp), M_PCB, M_WAITOK);
637 so->so_pcb = (caddr_t)kp;
638 if (so->so_pcb)
639 bzero(so->so_pcb, sizeof(*kp));
640 }
641 if (req == PRU_DETACH && kp) {
642 int af = kp->kp_raw.rcb_proto.sp_protocol;
643 if (af == PF_KEY) /* XXX: AF_KEY */
644 key_cb.key_count--;
645 key_cb.any_count--;
646
647 key_freereg(so);
648 }
649
650 error = raw_usrreq(so, req, m, nam, control, l);
651 m = control = NULL; /* reclaimed in raw_usrreq */
652 kp = (struct keycb *)sotorawcb(so);
653 if (req == PRU_ATTACH && kp) {
654 int af = kp->kp_raw.rcb_proto.sp_protocol;
655 if (error) {
656 pfkeystat.sockerr++;
657 free((caddr_t)kp, M_PCB);
658 so->so_pcb = (caddr_t) 0;
659 splx(s);
660 return (error);
661 }
662
663 kp->kp_promisc = kp->kp_registered = 0;
664
665 if (af == PF_KEY) /* XXX: AF_KEY */
666 key_cb.key_count++;
667 key_cb.any_count++;
668 kp->kp_raw.rcb_laddr = &key_src;
669 kp->kp_raw.rcb_faddr = &key_dst;
670 soisconnected(so);
671 so->so_options |= SO_USELOOPBACK;
672 }
673 splx(s);
674 return (error);
675 }
676 #endif /*!__FreeBSD__*/
677
678 /* sysctl */
679 #ifdef SYSCTL_NODE
680 SYSCTL_NODE(_net, PF_KEY, key, CTLFLAG_RW, 0, "Key Family");
681 #endif /* SYSCTL_NODE */
682
683 /*
684 * Definitions of protocols supported in the KEY domain.
685 */
686
687 #ifdef __FreeBSD__
688 extern struct domain keydomain;
689
690 struct pr_usrreqs key_usrreqs = {
691 key_abort, pru_accept_notsupp, key_attach, key_bind,
692 key_connect,
693 pru_connect2_notsupp, pru_control_notsupp, key_detach,
694 key_disconnect, pru_listen_notsupp, key_peeraddr,
695 pru_rcvd_notsupp,
696 pru_rcvoob_notsupp, key_send, pru_sense_null, key_shutdown,
697 key_sockaddr, sosend, soreceive, sopoll
698 };
699
700 struct protosw keysw[] = {
701 { SOCK_RAW, &keydomain, PF_KEY_V2, PR_ATOMIC|PR_ADDR,
702 0, (pr_output_t *)key_output, raw_ctlinput, 0,
703 0,
704 raw_init, 0, 0, 0,
705 &key_usrreqs
706 }
707 };
708
709 static void
710 key_init0(void)
711 {
712 bzero((caddr_t)&key_cb, sizeof(key_cb));
713 key_init();
714 }
715
716 struct domain keydomain =
717 { PF_KEY, "key", key_init0, 0, 0,
718 keysw, &keysw[sizeof(keysw)/sizeof(keysw[0])] };
719
720 DOMAIN_SET(key);
721
722 #else /* !__FreeBSD__ */
723
724 DOMAIN_DEFINE(keydomain);
725
726 const struct protosw keysw[] = {
727 {
728 .pr_type = SOCK_RAW,
729 .pr_domain = &keydomain,
730 .pr_protocol = PF_KEY_V2,
731 .pr_flags = PR_ATOMIC|PR_ADDR,
732 .pr_output = key_output,
733 .pr_ctlinput = raw_ctlinput,
734 .pr_usrreq = key_usrreq,
735 .pr_init = raw_init,
736 }
737 };
738
739 struct domain keydomain = {
740 .dom_family = PF_KEY,
741 .dom_name = "key",
742 .dom_init = key_init,
743 .dom_protosw = keysw,
744 .dom_protoswNPROTOSW = &keysw[__arraycount(keysw)],
745 };
746
747 #endif
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