The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netipsec/keysock.c

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    1 /*      $NetBSD: keysock.c,v 1.3 2003/12/04 19:38:25 atatat 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 1.3 2003/12/04 19:38:25 atatat 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 = { 2, PF_KEY, };
   76 static struct sockaddr key_src = { 2, PF_KEY, };
   77 
   78 static int key_sendup0 __P((struct rawcb *, struct mbuf *, int));
   79 
   80 struct pfkeystat pfkeystat;
   81 
   82 /*
   83  * key_output()
   84  */
   85 int
   86 #if __STDC__
   87 key_output(struct mbuf *m, ...)
   88 #else
   89 key_output(m, va_alist)
   90         struct mbuf *m;
   91         va_dcl
   92 #endif
   93 {
   94         struct sadb_msg *msg;
   95         int len, error = 0;
   96         int s;
   97         struct socket *so;
   98         va_list ap;
   99 
  100         va_start(ap, m);
  101         so = va_arg(ap, struct socket *);
  102         va_end(ap);
  103 
  104         if (m == 0)
  105                 panic("key_output: NULL pointer was passed.\n");
  106 
  107         pfkeystat.out_total++;
  108         pfkeystat.out_bytes += m->m_pkthdr.len;
  109 
  110         len = m->m_pkthdr.len;
  111         if (len < sizeof(struct sadb_msg)) {
  112                 pfkeystat.out_tooshort++;
  113                 error = EINVAL;
  114                 goto end;
  115         }
  116 
  117         if (m->m_len < sizeof(struct sadb_msg)) {
  118                 if ((m = m_pullup(m, sizeof(struct sadb_msg))) == 0) {
  119                         pfkeystat.out_nomem++;
  120                         error = ENOBUFS;
  121                         goto end;
  122                 }
  123         }
  124 
  125         if ((m->m_flags & M_PKTHDR) == 0)
  126                 panic("key_output: not M_PKTHDR ??");
  127 
  128         KEYDEBUG(KEYDEBUG_KEY_DUMP, kdebug_mbuf(m));
  129 
  130         msg = mtod(m, struct sadb_msg *);
  131         pfkeystat.out_msgtype[msg->sadb_msg_type]++;
  132         if (len != PFKEY_UNUNIT64(msg->sadb_msg_len)) {
  133                 pfkeystat.out_invlen++;
  134                 error = EINVAL;
  135                 goto end;
  136         }
  137 
  138         /*XXX giant lock*/
  139         s = splsoftnet();
  140         error = key_parse(m, so);
  141         m = NULL;
  142         splx(s);
  143 end:
  144         if (m)
  145                 m_freem(m);
  146         return error;
  147 }
  148 
  149 /*
  150  * send message to the socket.
  151  */
  152 static int
  153 key_sendup0(rp, m, promisc)
  154         struct rawcb *rp;
  155         struct mbuf *m;
  156         int promisc;
  157 {
  158         int error;
  159 
  160         if (promisc) {
  161                 struct sadb_msg *pmsg;
  162 
  163                 M_PREPEND(m, sizeof(struct sadb_msg), M_DONTWAIT);
  164                 if (m && m->m_len < sizeof(struct sadb_msg))
  165                         m = m_pullup(m, sizeof(struct sadb_msg));
  166                 if (!m) {
  167                         pfkeystat.in_nomem++;
  168                         m_freem(m);
  169                         return ENOBUFS;
  170                 }
  171                 m->m_pkthdr.len += sizeof(*pmsg);
  172 
  173                 pmsg = mtod(m, struct sadb_msg *);
  174                 bzero(pmsg, sizeof(*pmsg));
  175                 pmsg->sadb_msg_version = PF_KEY_V2;
  176                 pmsg->sadb_msg_type = SADB_X_PROMISC;
  177                 pmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
  178                 /* pid and seq? */
  179 
  180                 pfkeystat.in_msgtype[pmsg->sadb_msg_type]++;
  181         }
  182 
  183         if (!sbappendaddr(&rp->rcb_socket->so_rcv, (struct sockaddr *)&key_src,
  184             m, NULL)) {
  185                 pfkeystat.in_nomem++;
  186                 m_freem(m);
  187                 error = ENOBUFS;
  188         } else
  189                 error = 0;
  190         sorwakeup(rp->rcb_socket);
  191         return error;
  192 }
  193 
  194 /* XXX this interface should be obsoleted. */
  195 int
  196 key_sendup(so, msg, len, target)
  197         struct socket *so;
  198         struct sadb_msg *msg;
  199         u_int len;
  200         int target;     /*target of the resulting message*/
  201 {
  202         struct mbuf *m, *n, *mprev;
  203         int tlen;
  204 
  205         /* sanity check */
  206         if (so == 0 || msg == 0)
  207                 panic("key_sendup: NULL pointer was passed.\n");
  208 
  209         KEYDEBUG(KEYDEBUG_KEY_DUMP,
  210                 printf("key_sendup: \n");
  211                 kdebug_sadb(msg));
  212 
  213         /*
  214          * we increment statistics here, just in case we have ENOBUFS
  215          * in this function.
  216          */
  217         pfkeystat.in_total++;
  218         pfkeystat.in_bytes += len;
  219         pfkeystat.in_msgtype[msg->sadb_msg_type]++;
  220 
  221         /*
  222          * Get mbuf chain whenever possible (not clusters),
  223          * to save socket buffer.  We'll be generating many SADB_ACQUIRE
  224          * messages to listening key sockets.  If we simply allocate clusters,
  225          * sbappendaddr() will raise ENOBUFS due to too little sbspace().
  226          * sbspace() computes # of actual data bytes AND mbuf region.
  227          *
  228          * TODO: SADB_ACQUIRE filters should be implemented.
  229          */
  230         tlen = len;
  231         m = mprev = NULL;
  232         while (tlen > 0) {
  233                 if (tlen == len) {
  234                         MGETHDR(n, M_DONTWAIT, MT_DATA);
  235                         n->m_len = MHLEN;
  236                 } else {
  237                         MGET(n, M_DONTWAIT, MT_DATA);
  238                         n->m_len = MLEN;
  239                 }
  240                 if (!n) {
  241                         pfkeystat.in_nomem++;
  242                         return ENOBUFS;
  243                 }
  244                 if (tlen >= MCLBYTES) { /*XXX better threshold? */
  245                         MCLGET(n, M_DONTWAIT);
  246                         if ((n->m_flags & M_EXT) == 0) {
  247                                 m_free(n);
  248                                 m_freem(m);
  249                                 pfkeystat.in_nomem++;
  250                                 return ENOBUFS;
  251                         }
  252                         n->m_len = MCLBYTES;
  253                 }
  254 
  255                 if (tlen < n->m_len)
  256                         n->m_len = tlen;
  257                 n->m_next = NULL;
  258                 if (m == NULL)
  259                         m = mprev = n;
  260                 else {
  261                         mprev->m_next = n;
  262                         mprev = n;
  263                 }
  264                 tlen -= n->m_len;
  265                 n = NULL;
  266         }
  267         m->m_pkthdr.len = len;
  268         m->m_pkthdr.rcvif = NULL;
  269         m_copyback(m, 0, len, (caddr_t)msg);
  270 
  271         /* avoid duplicated statistics */
  272         pfkeystat.in_total--;
  273         pfkeystat.in_bytes -= len;
  274         pfkeystat.in_msgtype[msg->sadb_msg_type]--;
  275 
  276         return key_sendup_mbuf(so, m, target);
  277 }
  278 
  279 /* so can be NULL if target != KEY_SENDUP_ONE */
  280 int
  281 key_sendup_mbuf(so, m, target)
  282         struct socket *so;
  283         struct mbuf *m;
  284         int target;
  285 {
  286         struct mbuf *n;
  287         struct keycb *kp;
  288         int sendup;
  289         struct rawcb *rp;
  290         int error = 0;
  291 
  292         if (m == NULL)
  293                 panic("key_sendup_mbuf: NULL pointer was passed.\n");
  294         if (so == NULL && target == KEY_SENDUP_ONE)
  295                 panic("key_sendup_mbuf: NULL pointer was passed.\n");
  296 
  297         pfkeystat.in_total++;
  298         pfkeystat.in_bytes += m->m_pkthdr.len;
  299         if (m->m_len < sizeof(struct sadb_msg)) {
  300 #if 1
  301                 m = m_pullup(m, sizeof(struct sadb_msg));
  302                 if (m == NULL) {
  303                         pfkeystat.in_nomem++;
  304                         return ENOBUFS;
  305                 }
  306 #else
  307                 /* don't bother pulling it up just for stats */
  308 #endif
  309         }
  310         if (m->m_len >= sizeof(struct sadb_msg)) {
  311                 struct sadb_msg *msg;
  312                 msg = mtod(m, struct sadb_msg *);
  313                 pfkeystat.in_msgtype[msg->sadb_msg_type]++;
  314         }
  315 
  316         LIST_FOREACH(rp, &rawcb_list, rcb_list)
  317         {
  318                 if (rp->rcb_proto.sp_family != PF_KEY)
  319                         continue;
  320                 if (rp->rcb_proto.sp_protocol
  321                  && rp->rcb_proto.sp_protocol != PF_KEY_V2) {
  322                         continue;
  323                 }
  324 
  325                 kp = (struct keycb *)rp;
  326 
  327                 /*
  328                  * If you are in promiscuous mode, and when you get broadcasted
  329                  * reply, you'll get two PF_KEY messages.
  330                  * (based on pf_key@inner.net message on 14 Oct 1998)
  331                  */
  332                 if (((struct keycb *)rp)->kp_promisc) {
  333                         if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
  334                                 (void)key_sendup0(rp, n, 1);
  335                                 n = NULL;
  336                         }
  337                 }
  338 
  339                 /* the exact target will be processed later */
  340                 if (so && sotorawcb(so) == rp)
  341                         continue;
  342 
  343                 sendup = 0;
  344                 switch (target) {
  345                 case KEY_SENDUP_ONE:
  346                         /* the statement has no effect */
  347                         if (so && sotorawcb(so) == rp)
  348                                 sendup++;
  349                         break;
  350                 case KEY_SENDUP_ALL:
  351                         sendup++;
  352                         break;
  353                 case KEY_SENDUP_REGISTERED:
  354                         if (kp->kp_registered)
  355                                 sendup++;
  356                         break;
  357                 }
  358                 pfkeystat.in_msgtarget[target]++;
  359 
  360                 if (!sendup)
  361                         continue;
  362 
  363                 if ((n = m_copy(m, 0, (int)M_COPYALL)) == NULL) {
  364                         m_freem(m);
  365                         pfkeystat.in_nomem++;
  366                         return ENOBUFS;
  367                 }
  368 
  369                 if ((error = key_sendup0(rp, n, 0)) != 0) {
  370                         m_freem(m);
  371                         return error;
  372                 }
  373 
  374                 n = NULL;
  375         }
  376 
  377         if (so) {
  378                 error = key_sendup0(sotorawcb(so), m, 0);
  379                 m = NULL;
  380         } else {
  381                 error = 0;
  382                 m_freem(m);
  383         }
  384         return error;
  385 }
  386 
  387 #ifdef __FreeBSD__
  388 
  389 /*
  390  * key_abort()
  391  * derived from net/rtsock.c:rts_abort()
  392  */
  393 static int
  394 key_abort(struct socket *so)
  395 {
  396         int s, error;
  397         s = splnet();   /* FreeBSD */
  398         error = raw_usrreqs.pru_abort(so);
  399         splx(s);
  400         return error;
  401 }
  402 
  403 /*
  404  * key_attach()
  405  * derived from net/rtsock.c:rts_attach()
  406  */
  407 static int
  408 key_attach(struct socket *so, int proto, struct proc *td)
  409 {
  410         struct keycb *kp;
  411         int s, error;
  412 
  413         if (sotorawcb(so) != 0)
  414                 return EISCONN; /* XXX panic? */
  415         kp = (struct keycb *)malloc(sizeof *kp, M_PCB, M_WAITOK|M_ZERO); /* XXX */
  416         if (kp == 0)
  417                 return ENOBUFS;
  418 
  419         /*
  420          * The spl[soft]net() is necessary to block protocols from sending
  421          * error notifications (like RTM_REDIRECT or RTM_LOSING) while
  422          * this PCB is extant but incompletely initialized.
  423          * Probably we should try to do more of this work beforehand and
  424          * eliminate the spl.
  425          */
  426         s = splnet();   /* FreeBSD */
  427         so->so_pcb = (caddr_t)kp;
  428         error = raw_usrreqs.pru_attach(so, proto, td);
  429         kp = (struct keycb *)sotorawcb(so);
  430         if (error) {
  431                 free(kp, M_PCB);
  432                 so->so_pcb = (caddr_t) 0;
  433                 splx(s);
  434                 return error;
  435         }
  436 
  437         kp->kp_promisc = kp->kp_registered = 0;
  438 
  439         if (kp->kp_raw.rcb_proto.sp_protocol == PF_KEY) /* XXX: AF_KEY */
  440                 key_cb.key_count++;
  441         key_cb.any_count++;
  442         kp->kp_raw.rcb_laddr = &key_src;
  443         kp->kp_raw.rcb_faddr = &key_dst;
  444         soisconnected(so);
  445         so->so_options |= SO_USELOOPBACK;
  446 
  447         splx(s);
  448         return 0;
  449 }
  450 
  451 /*
  452  * key_bind()
  453  * derived from net/rtsock.c:rts_bind()
  454  */
  455 static int
  456 key_bind(struct socket *so, struct sockaddr *nam, struct proc *td)
  457 {
  458         int s, error;
  459         s = splnet();   /* FreeBSD */
  460         error = raw_usrreqs.pru_bind(so, nam, td); /* xxx just EINVAL */
  461         splx(s);
  462         return error;
  463 }
  464 
  465 /*
  466  * key_connect()
  467  * derived from net/rtsock.c:rts_connect()
  468  */
  469 static int
  470 key_connect(struct socket *so, struct sockaddr *nam, struct proc *td)
  471 {
  472         int s, error;
  473         s = splnet();   /* FreeBSD */
  474         error = raw_usrreqs.pru_connect(so, nam, td); /* XXX just EINVAL */
  475         splx(s);
  476         return error;
  477 }
  478 
  479 /*
  480  * key_detach()
  481  * derived from net/rtsock.c:rts_detach()
  482  */
  483 static int
  484 key_detach(struct socket *so)
  485 {
  486         struct keycb *kp = (struct keycb *)sotorawcb(so);
  487         int s, error;
  488 
  489         s = splnet();   /* FreeBSD */
  490         if (kp != 0) {
  491                 if (kp->kp_raw.rcb_proto.sp_protocol
  492                     == PF_KEY) /* XXX: AF_KEY */
  493                         key_cb.key_count--;
  494                 key_cb.any_count--;
  495 
  496                 key_freereg(so);
  497         }
  498         error = raw_usrreqs.pru_detach(so);
  499         splx(s);
  500         return error;
  501 }
  502 
  503 /*
  504  * key_disconnect()
  505  * derived from net/rtsock.c:key_disconnect()
  506  */
  507 static int
  508 key_disconnect(struct socket *so)
  509 {
  510         int s, error;
  511         s = splnet();   /* FreeBSD */
  512         error = raw_usrreqs.pru_disconnect(so);
  513         splx(s);
  514         return error;
  515 }
  516 
  517 /*
  518  * key_peeraddr()
  519  * derived from net/rtsock.c:rts_peeraddr()
  520  */
  521 static int
  522 key_peeraddr(struct socket *so, struct sockaddr **nam)
  523 {
  524         int s, error;
  525         s = splnet();   /* FreeBSD */
  526         error = raw_usrreqs.pru_peeraddr(so, nam);
  527         splx(s);
  528         return error;
  529 }
  530 
  531 /*
  532  * key_send()
  533  * derived from net/rtsock.c:rts_send()
  534  */
  535 static int
  536 key_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
  537          struct mbuf *control, struct proc *td)
  538 {
  539         int s, error;
  540         s = splnet();   /* FreeBSD */
  541         error = raw_usrreqs.pru_send(so, flags, m, nam, control, td);
  542         splx(s);
  543         return error;
  544 }
  545 
  546 /*
  547  * key_shutdown()
  548  * derived from net/rtsock.c:rts_shutdown()
  549  */
  550 static int
  551 key_shutdown(struct socket *so)
  552 {
  553         int s, error;
  554         s = splnet();   /* FreeBSD */
  555         error = raw_usrreqs.pru_shutdown(so);
  556         splx(s);
  557         return error;
  558 }
  559 
  560 /*
  561  * key_sockaddr()
  562  * derived from net/rtsock.c:rts_sockaddr()
  563  */
  564 static int
  565 key_sockaddr(struct socket *so, struct sockaddr **nam)
  566 {
  567         int s, error;
  568         s = splnet();   /* FreeBSD */
  569         error = raw_usrreqs.pru_sockaddr(so, nam);
  570         splx(s);
  571         return error;
  572 }
  573 #else /*!__FreeBSD__ -- traditional proto_usrreq() switch */
  574 
  575 /*
  576  * key_usrreq()
  577  * derived from net/rtsock.c:route_usrreq()
  578  */
  579 int
  580 key_usrreq(so, req, m, nam, control, p)
  581         struct socket *so;
  582         int req;
  583         struct mbuf *m, *nam, *control;
  584         struct proc *p;
  585 {
  586         int error = 0;
  587         struct keycb *kp = (struct keycb *)sotorawcb(so);
  588         int s;
  589 
  590         s = splsoftnet();
  591         if (req == PRU_ATTACH) {
  592                 kp = (struct keycb *)malloc(sizeof(*kp), M_PCB, M_WAITOK);
  593                 so->so_pcb = (caddr_t)kp;
  594                 if (so->so_pcb)
  595                         bzero(so->so_pcb, sizeof(*kp));
  596         }
  597         if (req == PRU_DETACH && kp) {
  598                 int af = kp->kp_raw.rcb_proto.sp_protocol;
  599                 if (af == PF_KEY) /* XXX: AF_KEY */
  600                         key_cb.key_count--;
  601                 key_cb.any_count--;
  602 
  603                 key_freereg(so);
  604         }
  605 
  606         error = raw_usrreq(so, req, m, nam, control, p);
  607         m = control = NULL;     /* reclaimed in raw_usrreq */
  608         kp = (struct keycb *)sotorawcb(so);
  609         if (req == PRU_ATTACH && kp) {
  610                 int af = kp->kp_raw.rcb_proto.sp_protocol;
  611                 if (error) {
  612                         pfkeystat.sockerr++;
  613                         free((caddr_t)kp, M_PCB);
  614                         so->so_pcb = (caddr_t) 0;
  615                         splx(s);
  616                         return (error);
  617                 }
  618 
  619                 kp->kp_promisc = kp->kp_registered = 0;
  620 
  621                 if (af == PF_KEY) /* XXX: AF_KEY */
  622                         key_cb.key_count++;
  623                 key_cb.any_count++;
  624                 kp->kp_raw.rcb_laddr = &key_src;
  625                 kp->kp_raw.rcb_faddr = &key_dst;
  626                 soisconnected(so);
  627                 so->so_options |= SO_USELOOPBACK;
  628         }
  629         splx(s);
  630         return (error);
  631 }
  632 #endif /*!__FreeBSD__*/
  633 
  634 /* sysctl */
  635 #ifdef SYSCTL_NODE
  636 SYSCTL_NODE(_net, PF_KEY, key, CTLFLAG_RW, 0, "Key Family");
  637 #endif /* SYSCTL_NODE */
  638 
  639 /*
  640  * Definitions of protocols supported in the KEY domain.
  641  */
  642 
  643 /* This extern declaration is all that's common... */
  644 extern struct domain keydomain;
  645 
  646 #ifdef __FreeBSD__
  647 struct pr_usrreqs key_usrreqs = {
  648         key_abort, pru_accept_notsupp, key_attach, key_bind,
  649         key_connect,
  650         pru_connect2_notsupp, pru_control_notsupp, key_detach,
  651         key_disconnect, pru_listen_notsupp, key_peeraddr,
  652         pru_rcvd_notsupp,
  653         pru_rcvoob_notsupp, key_send, pru_sense_null, key_shutdown,
  654         key_sockaddr, sosend, soreceive, sopoll
  655 };
  656 
  657 struct protosw keysw[] = {
  658 { SOCK_RAW,     &keydomain,     PF_KEY_V2,      PR_ATOMIC|PR_ADDR,
  659   0,            (pr_output_t *)key_output,      raw_ctlinput, 0,
  660   0,
  661   raw_init,     0,              0,              0,
  662   &key_usrreqs
  663 }
  664 };
  665 
  666 static void
  667 key_init0(void)
  668 {
  669         bzero((caddr_t)&key_cb, sizeof(key_cb));
  670         key_init();
  671 }
  672 
  673 struct domain keydomain =
  674     { PF_KEY, "key", key_init0, 0, 0,
  675       keysw, &keysw[sizeof(keysw)/sizeof(keysw[0])] };
  676 
  677 DOMAIN_SET(key);
  678 
  679 #else /* !__FreeBSD__ */
  680 
  681 
  682 struct protosw keysw[] = {
  683 { SOCK_RAW,     &keydomain,     PF_KEY_V2,      PR_ATOMIC|PR_ADDR,
  684   0,            key_output,     raw_ctlinput,   0,
  685   key_usrreq,
  686   raw_init,     0,              0,              0,
  687   NULL,
  688 }
  689 };
  690 
  691 struct domain keydomain =
  692     { PF_KEY, "key", key_init, 0, 0,
  693       keysw, &keysw[sizeof(keysw)/sizeof(keysw[0])] };
  694 
  695 #endif

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