1 /* $NetBSD: rtsock.c,v 1.193 2016/07/28 07:54:31 martin Exp $ */
2
3 /*
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 1988, 1991, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. 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 * @(#)rtsock.c 8.7 (Berkeley) 10/12/95
61 */
62
63 #include <sys/cdefs.h>
64 __KERNEL_RCSID(0, "$NetBSD: rtsock.c,v 1.193 2016/07/28 07:54:31 martin Exp $");
65
66 #ifdef _KERNEL_OPT
67 #include "opt_inet.h"
68 #include "opt_mpls.h"
69 #include "opt_compat_netbsd.h"
70 #include "opt_sctp.h"
71 #endif
72
73 #include <sys/param.h>
74 #include <sys/systm.h>
75 #include <sys/proc.h>
76 #include <sys/socket.h>
77 #include <sys/socketvar.h>
78 #include <sys/domain.h>
79 #include <sys/protosw.h>
80 #include <sys/sysctl.h>
81 #include <sys/kauth.h>
82 #include <sys/kmem.h>
83 #include <sys/intr.h>
84
85 #include <net/if.h>
86 #include <net/if_llatbl.h>
87 #include <net/if_types.h>
88 #include <net/route.h>
89 #include <net/raw_cb.h>
90
91 #include <netinet/in_var.h>
92 #include <netinet/if_inarp.h>
93
94 #include <netmpls/mpls.h>
95
96 #ifdef SCTP
97 extern void sctp_add_ip_address(struct ifaddr *);
98 extern void sctp_delete_ip_address(struct ifaddr *);
99 #endif
100
101 #if defined(COMPAT_14) || defined(COMPAT_50)
102 #include <compat/net/if.h>
103 #include <compat/net/route.h>
104 #endif
105 #ifdef COMPAT_RTSOCK
106 #define RTM_XVERSION RTM_OVERSION
107 #define RT_XADVANCE(a,b) RT_OADVANCE(a,b)
108 #define RT_XROUNDUP(n) RT_OROUNDUP(n)
109 #define PF_XROUTE PF_OROUTE
110 #define rt_xmsghdr rt_msghdr50
111 #define if_xmsghdr if_msghdr /* if_msghdr50 is for RTM_OIFINFO */
112 #define ifa_xmsghdr ifa_msghdr50
113 #define if_xannouncemsghdr if_announcemsghdr50
114 #define COMPATNAME(x) compat_50_ ## x
115 #define DOMAINNAME "oroute"
116 CTASSERT(sizeof(struct ifa_xmsghdr) == 20);
117 DOMAIN_DEFINE(compat_50_routedomain); /* forward declare and add to link set */
118 #else /* COMPAT_RTSOCK */
119 #define RTM_XVERSION RTM_VERSION
120 #define RT_XADVANCE(a,b) RT_ADVANCE(a,b)
121 #define RT_XROUNDUP(n) RT_ROUNDUP(n)
122 #define PF_XROUTE PF_ROUTE
123 #define rt_xmsghdr rt_msghdr
124 #define if_xmsghdr if_msghdr
125 #define ifa_xmsghdr ifa_msghdr
126 #define if_xannouncemsghdr if_announcemsghdr
127 #define COMPATNAME(x) x
128 #define DOMAINNAME "route"
129 CTASSERT(sizeof(struct ifa_xmsghdr) == 24);
130 #ifdef COMPAT_50
131 #define COMPATCALL(name, args) compat_50_ ## name args
132 #endif
133 DOMAIN_DEFINE(routedomain); /* forward declare and add to link set */
134 #undef COMPAT_50
135 #undef COMPAT_14
136 #endif /* COMPAT_RTSOCK */
137
138 #ifndef COMPATCALL
139 #define COMPATCALL(name, args) do { } while (/*CONSTCOND*/ 0)
140 #endif
141
142 #ifdef RTSOCK_DEBUG
143 #define RT_IN_PRINT(info, b, a) (in_print((b), sizeof(b), \
144 &((const struct sockaddr_in *)(info)->rti_info[(a)])->sin_addr), (b))
145 #endif /* RTSOCK_DEBUG */
146
147 struct route_info COMPATNAME(route_info) = {
148 .ri_dst = { .sa_len = 2, .sa_family = PF_XROUTE, },
149 .ri_src = { .sa_len = 2, .sa_family = PF_XROUTE, },
150 .ri_maxqlen = IFQ_MAXLEN,
151 };
152
153 #define PRESERVED_RTF (RTF_UP | RTF_GATEWAY | RTF_HOST | RTF_DONE | RTF_MASK)
154
155 static void COMPATNAME(route_init)(void);
156 static int COMPATNAME(route_output)(struct mbuf *, struct socket *);
157
158 static int rt_xaddrs(u_char, const char *, const char *, struct rt_addrinfo *);
159 static struct mbuf *rt_makeifannouncemsg(struct ifnet *, int, int,
160 struct rt_addrinfo *);
161 static int rt_msg2(int, struct rt_addrinfo *, void *, struct rt_walkarg *, int *);
162 static void rt_setmetrics(int, const struct rt_xmsghdr *, struct rtentry *);
163 static void rtm_setmetrics(const struct rtentry *, struct rt_xmsghdr *);
164 static void sysctl_net_route_setup(struct sysctllog **);
165 static int sysctl_dumpentry(struct rtentry *, void *);
166 static int sysctl_iflist(int, struct rt_walkarg *, int);
167 static int sysctl_rtable(SYSCTLFN_PROTO);
168 static void rt_adjustcount(int, int);
169
170 static const struct protosw COMPATNAME(route_protosw)[];
171
172 static void
rt_adjustcount(int af,int cnt)173 rt_adjustcount(int af, int cnt)
174 {
175 struct route_cb * const cb = &COMPATNAME(route_info).ri_cb;
176
177 cb->any_count += cnt;
178
179 switch (af) {
180 case AF_INET:
181 cb->ip_count += cnt;
182 return;
183 #ifdef INET6
184 case AF_INET6:
185 cb->ip6_count += cnt;
186 return;
187 #endif
188 case AF_MPLS:
189 cb->mpls_count += cnt;
190 return;
191 }
192 }
193
194 static int
COMPATNAME(route_attach)195 COMPATNAME(route_attach)(struct socket *so, int proto)
196 {
197 struct rawcb *rp;
198 int s, error;
199
200 KASSERT(sotorawcb(so) == NULL);
201 rp = kmem_zalloc(sizeof(*rp), KM_SLEEP);
202 rp->rcb_len = sizeof(*rp);
203 so->so_pcb = rp;
204
205 s = splsoftnet();
206 if ((error = raw_attach(so, proto)) == 0) {
207 rt_adjustcount(rp->rcb_proto.sp_protocol, 1);
208 rp->rcb_laddr = &COMPATNAME(route_info).ri_src;
209 rp->rcb_faddr = &COMPATNAME(route_info).ri_dst;
210 }
211 splx(s);
212
213 if (error) {
214 kmem_free(rp, sizeof(*rp));
215 so->so_pcb = NULL;
216 return error;
217 }
218
219 soisconnected(so);
220 so->so_options |= SO_USELOOPBACK;
221 KASSERT(solocked(so));
222
223 return error;
224 }
225
226 static void
COMPATNAME(route_detach)227 COMPATNAME(route_detach)(struct socket *so)
228 {
229 struct rawcb *rp = sotorawcb(so);
230 int s;
231
232 KASSERT(rp != NULL);
233 KASSERT(solocked(so));
234
235 s = splsoftnet();
236 rt_adjustcount(rp->rcb_proto.sp_protocol, -1);
237 raw_detach(so);
238 splx(s);
239 }
240
241 static int
COMPATNAME(route_accept)242 COMPATNAME(route_accept)(struct socket *so, struct sockaddr *nam)
243 {
244 KASSERT(solocked(so));
245
246 panic("route_accept");
247
248 return EOPNOTSUPP;
249 }
250
251 static int
COMPATNAME(route_bind)252 COMPATNAME(route_bind)(struct socket *so, struct sockaddr *nam, struct lwp *l)
253 {
254 KASSERT(solocked(so));
255
256 return EOPNOTSUPP;
257 }
258
259 static int
COMPATNAME(route_listen)260 COMPATNAME(route_listen)(struct socket *so, struct lwp *l)
261 {
262 KASSERT(solocked(so));
263
264 return EOPNOTSUPP;
265 }
266
267 static int
COMPATNAME(route_connect)268 COMPATNAME(route_connect)(struct socket *so, struct sockaddr *nam, struct lwp *l)
269 {
270 KASSERT(solocked(so));
271
272 return EOPNOTSUPP;
273 }
274
275 static int
COMPATNAME(route_connect2)276 COMPATNAME(route_connect2)(struct socket *so, struct socket *so2)
277 {
278 KASSERT(solocked(so));
279
280 return EOPNOTSUPP;
281 }
282
283 static int
COMPATNAME(route_disconnect)284 COMPATNAME(route_disconnect)(struct socket *so)
285 {
286 struct rawcb *rp = sotorawcb(so);
287 int s;
288
289 KASSERT(solocked(so));
290 KASSERT(rp != NULL);
291
292 s = splsoftnet();
293 soisdisconnected(so);
294 raw_disconnect(rp);
295 splx(s);
296
297 return 0;
298 }
299
300 static int
COMPATNAME(route_shutdown)301 COMPATNAME(route_shutdown)(struct socket *so)
302 {
303 int s;
304
305 KASSERT(solocked(so));
306
307 /*
308 * Mark the connection as being incapable of further input.
309 */
310 s = splsoftnet();
311 socantsendmore(so);
312 splx(s);
313 return 0;
314 }
315
316 static int
COMPATNAME(route_abort)317 COMPATNAME(route_abort)(struct socket *so)
318 {
319 KASSERT(solocked(so));
320
321 panic("route_abort");
322
323 return EOPNOTSUPP;
324 }
325
326 static int
COMPATNAME(route_ioctl)327 COMPATNAME(route_ioctl)(struct socket *so, u_long cmd, void *nam,
328 struct ifnet * ifp)
329 {
330 return EOPNOTSUPP;
331 }
332
333 static int
COMPATNAME(route_stat)334 COMPATNAME(route_stat)(struct socket *so, struct stat *ub)
335 {
336 KASSERT(solocked(so));
337
338 return 0;
339 }
340
341 static int
COMPATNAME(route_peeraddr)342 COMPATNAME(route_peeraddr)(struct socket *so, struct sockaddr *nam)
343 {
344 struct rawcb *rp = sotorawcb(so);
345
346 KASSERT(solocked(so));
347 KASSERT(rp != NULL);
348 KASSERT(nam != NULL);
349
350 if (rp->rcb_faddr == NULL)
351 return ENOTCONN;
352
353 raw_setpeeraddr(rp, nam);
354 return 0;
355 }
356
357 static int
COMPATNAME(route_sockaddr)358 COMPATNAME(route_sockaddr)(struct socket *so, struct sockaddr *nam)
359 {
360 struct rawcb *rp = sotorawcb(so);
361
362 KASSERT(solocked(so));
363 KASSERT(rp != NULL);
364 KASSERT(nam != NULL);
365
366 if (rp->rcb_faddr == NULL)
367 return ENOTCONN;
368
369 raw_setsockaddr(rp, nam);
370 return 0;
371 }
372
373 static int
COMPATNAME(route_rcvd)374 COMPATNAME(route_rcvd)(struct socket *so, int flags, struct lwp *l)
375 {
376 KASSERT(solocked(so));
377
378 return EOPNOTSUPP;
379 }
380
381 static int
COMPATNAME(route_recvoob)382 COMPATNAME(route_recvoob)(struct socket *so, struct mbuf *m, int flags)
383 {
384 KASSERT(solocked(so));
385
386 return EOPNOTSUPP;
387 }
388
389 static int
COMPATNAME(route_send)390 COMPATNAME(route_send)(struct socket *so, struct mbuf *m,
391 struct sockaddr *nam, struct mbuf *control, struct lwp *l)
392 {
393 int error = 0;
394 int s;
395
396 KASSERT(solocked(so));
397 KASSERT(so->so_proto == &COMPATNAME(route_protosw)[0]);
398
399 s = splsoftnet();
400 error = raw_send(so, m, nam, control, l, &COMPATNAME(route_output));
401 splx(s);
402
403 return error;
404 }
405
406 static int
COMPATNAME(route_sendoob)407 COMPATNAME(route_sendoob)(struct socket *so, struct mbuf *m,
408 struct mbuf *control)
409 {
410 KASSERT(solocked(so));
411
412 m_freem(m);
413 m_freem(control);
414
415 return EOPNOTSUPP;
416 }
417 static int
COMPATNAME(route_purgeif)418 COMPATNAME(route_purgeif)(struct socket *so, struct ifnet *ifp)
419 {
420
421 panic("route_purgeif");
422
423 return EOPNOTSUPP;
424 }
425
426 #ifdef INET
427 static int
route_get_sdl_index(struct rt_addrinfo * info,int * sdl_index)428 route_get_sdl_index(struct rt_addrinfo *info, int *sdl_index)
429 {
430 struct rtentry *nrt;
431 int error;
432
433 error = rtrequest1(RTM_GET, info, &nrt);
434 if (error != 0)
435 return error;
436 /*
437 * nrt->rt_ifp->if_index may not be correct
438 * due to changing to ifplo0.
439 */
440 *sdl_index = satosdl(nrt->rt_gateway)->sdl_index;
441 rtfree(nrt);
442
443 return 0;
444 }
445 #endif /* INET */
446
447 static void
route_get_sdl(const struct ifnet * ifp,const struct sockaddr * dst,struct sockaddr_dl * sdl,int * flags)448 route_get_sdl(const struct ifnet *ifp, const struct sockaddr *dst,
449 struct sockaddr_dl *sdl, int *flags)
450 {
451 struct llentry *la;
452
453 KASSERT(ifp != NULL);
454
455 IF_AFDATA_RLOCK(ifp);
456 switch (dst->sa_family) {
457 case AF_INET:
458 la = lla_lookup(LLTABLE(ifp), 0, dst);
459 break;
460 case AF_INET6:
461 la = lla_lookup(LLTABLE6(ifp), 0, dst);
462 break;
463 default:
464 la = NULL;
465 KASSERTMSG(0, "Invalid AF=%d\n", dst->sa_family);
466 break;
467 }
468 IF_AFDATA_RUNLOCK(ifp);
469
470 void *a = (LLE_IS_VALID(la) && (la->la_flags & LLE_VALID) == LLE_VALID)
471 ? &la->ll_addr : NULL;
472
473 a = sockaddr_dl_init(sdl, sizeof(*sdl), ifp->if_index, ifp->if_type,
474 NULL, 0, a, ifp->if_addrlen);
475 KASSERT(a != NULL);
476
477 if (la != NULL) {
478 *flags = la->la_flags;
479 LLE_RUNLOCK(la);
480 }
481 }
482
483 static int
route_output_report(struct rtentry * rt,struct rt_addrinfo * info,struct rt_xmsghdr * rtm,struct rt_xmsghdr ** new_rtm)484 route_output_report(struct rtentry *rt, struct rt_addrinfo *info,
485 struct rt_xmsghdr *rtm, struct rt_xmsghdr **new_rtm)
486 {
487 int len;
488 struct ifnet *ifp;
489
490 if ((rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) == 0)
491 ;
492 else if ((ifp = rt->rt_ifp) != NULL) {
493 const struct ifaddr *rtifa;
494 info->rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr;
495 /* rtifa used to be simply rt->rt_ifa.
496 * If rt->rt_ifa != NULL, then
497 * rt_get_ifa() != NULL. So this
498 * ought to still be safe. --dyoung
499 */
500 rtifa = rt_get_ifa(rt);
501 info->rti_info[RTAX_IFA] = rtifa->ifa_addr;
502 #ifdef RTSOCK_DEBUG
503 if (info->rti_info[RTAX_IFA]->sa_family == AF_INET) {
504 char ibuf[INET_ADDRSTRLEN];
505 char abuf[INET_ADDRSTRLEN];
506 printf("%s: copying out RTAX_IFA %s "
507 "for info->rti_info[RTAX_DST] %s "
508 "ifa_getifa %p ifa_seqno %p\n",
509 __func__,
510 RT_IN_PRINT(info, ibuf, RTAX_IFA),
511 RT_IN_PRINT(info, abuf, RTAX_DST),
512 (void *)rtifa->ifa_getifa,
513 rtifa->ifa_seqno);
514 }
515 #endif /* RTSOCK_DEBUG */
516 if (ifp->if_flags & IFF_POINTOPOINT)
517 info->rti_info[RTAX_BRD] = rtifa->ifa_dstaddr;
518 else
519 info->rti_info[RTAX_BRD] = NULL;
520 rtm->rtm_index = ifp->if_index;
521 } else {
522 info->rti_info[RTAX_IFP] = NULL;
523 info->rti_info[RTAX_IFA] = NULL;
524 }
525 (void)rt_msg2(rtm->rtm_type, info, NULL, NULL, &len);
526 if (len > rtm->rtm_msglen) {
527 struct rt_xmsghdr *old_rtm = rtm;
528 R_Malloc(*new_rtm, struct rt_xmsghdr *, len);
529 if (*new_rtm == NULL)
530 return ENOBUFS;
531 (void)memcpy(*new_rtm, old_rtm, old_rtm->rtm_msglen);
532 rtm = *new_rtm;
533 }
534 (void)rt_msg2(rtm->rtm_type, info, rtm, NULL, 0);
535 rtm->rtm_flags = rt->rt_flags;
536 rtm_setmetrics(rt, rtm);
537 rtm->rtm_addrs = info->rti_addrs;
538
539 return 0;
540 }
541
542 static struct ifaddr *
route_output_get_ifa(const struct rt_addrinfo info,const struct rtentry * rt,struct ifnet ** ifp)543 route_output_get_ifa(const struct rt_addrinfo info, const struct rtentry *rt,
544 struct ifnet **ifp)
545 {
546 struct ifaddr *ifa = NULL;
547
548 *ifp = NULL;
549 if (info.rti_info[RTAX_IFP] != NULL) {
550 ifa = ifa_ifwithnet(info.rti_info[RTAX_IFP]);
551 if (ifa == NULL)
552 goto next;
553 *ifp = ifa->ifa_ifp;
554 if (info.rti_info[RTAX_IFA] == NULL &&
555 info.rti_info[RTAX_GATEWAY] == NULL)
556 goto next;
557 if (info.rti_info[RTAX_IFA] == NULL) {
558 /* route change <dst> <gw> -ifp <if> */
559 ifa = ifaof_ifpforaddr(info.rti_info[RTAX_GATEWAY],
560 *ifp);
561 } else {
562 /* route change <dst> -ifp <if> -ifa <addr> */
563 ifa = ifa_ifwithaddr(info.rti_info[RTAX_IFA]);
564 if (ifa != NULL)
565 goto out;
566 ifa = ifaof_ifpforaddr(info.rti_info[RTAX_IFA],
567 *ifp);
568 }
569 goto out;
570 }
571 next:
572 if (info.rti_info[RTAX_IFA] != NULL) {
573 /* route change <dst> <gw> -ifa <addr> */
574 ifa = ifa_ifwithaddr(info.rti_info[RTAX_IFA]);
575 if (ifa != NULL)
576 goto out;
577 }
578 if (info.rti_info[RTAX_GATEWAY] != NULL) {
579 /* route change <dst> <gw> */
580 ifa = ifa_ifwithroute(rt->rt_flags, rt_getkey(rt),
581 info.rti_info[RTAX_GATEWAY]);
582 }
583 out:
584 if (ifa != NULL && *ifp == NULL)
585 *ifp = ifa->ifa_ifp;
586 return ifa;
587 }
588
589 /*ARGSUSED*/
590 int
COMPATNAME(route_output)591 COMPATNAME(route_output)(struct mbuf *m, struct socket *so)
592 {
593 struct sockproto proto = { .sp_family = PF_XROUTE, };
594 struct rt_xmsghdr *rtm = NULL;
595 struct rt_xmsghdr *old_rtm = NULL, *new_rtm = NULL;
596 struct rtentry *rt = NULL;
597 struct rtentry *saved_nrt = NULL;
598 struct rt_addrinfo info;
599 int len, error = 0;
600 struct ifnet *ifp = NULL;
601 struct ifaddr *ifa = NULL;
602 sa_family_t family;
603 struct sockaddr_dl sdl;
604
605 #define senderr(e) do { error = e; goto flush;} while (/*CONSTCOND*/ 0)
606 if (m == NULL || ((m->m_len < sizeof(int32_t)) &&
607 (m = m_pullup(m, sizeof(int32_t))) == NULL))
608 return ENOBUFS;
609 if ((m->m_flags & M_PKTHDR) == 0)
610 panic("%s", __func__);
611 len = m->m_pkthdr.len;
612 if (len < sizeof(*rtm) ||
613 len != mtod(m, struct rt_xmsghdr *)->rtm_msglen) {
614 info.rti_info[RTAX_DST] = NULL;
615 senderr(EINVAL);
616 }
617 R_Malloc(rtm, struct rt_xmsghdr *, len);
618 if (rtm == NULL) {
619 info.rti_info[RTAX_DST] = NULL;
620 senderr(ENOBUFS);
621 }
622 m_copydata(m, 0, len, rtm);
623 if (rtm->rtm_version != RTM_XVERSION) {
624 info.rti_info[RTAX_DST] = NULL;
625 senderr(EPROTONOSUPPORT);
626 }
627 rtm->rtm_pid = curproc->p_pid;
628 memset(&info, 0, sizeof(info));
629 info.rti_addrs = rtm->rtm_addrs;
630 if (rt_xaddrs(rtm->rtm_type, (const char *)(rtm + 1), len + (char *)rtm,
631 &info)) {
632 senderr(EINVAL);
633 }
634 info.rti_flags = rtm->rtm_flags;
635 #ifdef RTSOCK_DEBUG
636 if (info.rti_info[RTAX_DST]->sa_family == AF_INET) {
637 char abuf[INET_ADDRSTRLEN];
638 printf("%s: extracted info.rti_info[RTAX_DST] %s\n", __func__,
639 RT_IN_PRINT(&info, abuf, RTAX_DST));
640 }
641 #endif /* RTSOCK_DEBUG */
642 if (info.rti_info[RTAX_DST] == NULL ||
643 (info.rti_info[RTAX_DST]->sa_family >= AF_MAX)) {
644 senderr(EINVAL);
645 }
646 if (info.rti_info[RTAX_GATEWAY] != NULL &&
647 (info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) {
648 senderr(EINVAL);
649 }
650
651 /*
652 * Verify that the caller has the appropriate privilege; RTM_GET
653 * is the only operation the non-superuser is allowed.
654 */
655 if (kauth_authorize_network(curlwp->l_cred, KAUTH_NETWORK_ROUTE,
656 0, rtm, NULL, NULL) != 0)
657 senderr(EACCES);
658
659 switch (rtm->rtm_type) {
660
661 case RTM_ADD:
662 if (info.rti_info[RTAX_GATEWAY] == NULL) {
663 senderr(EINVAL);
664 }
665 #ifdef INET
666 /* support for new ARP code with keeping backcompat */
667 if (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) {
668 const struct sockaddr_dl *sdlp =
669 satocsdl(info.rti_info[RTAX_GATEWAY]);
670
671 /* Allow routing requests by interface index */
672 if (sdlp->sdl_nlen == 0 && sdlp->sdl_alen == 0
673 && sdlp->sdl_slen == 0)
674 goto fallback;
675 /*
676 * Old arp binaries don't set the sdl_index
677 * so we have to complement it.
678 */
679 int sdl_index = sdlp->sdl_index;
680 if (sdl_index == 0) {
681 error = route_get_sdl_index(&info, &sdl_index);
682 if (error != 0)
683 goto fallback;
684 } else if (
685 info.rti_info[RTAX_DST]->sa_family == AF_INET) {
686 /*
687 * XXX workaround for SIN_PROXY case; proxy arp
688 * entry should be in an interface that has
689 * a network route including the destination,
690 * not a local (link) route that may not be a
691 * desired place, for example a tap.
692 */
693 const struct sockaddr_inarp *sina =
694 (const struct sockaddr_inarp *)
695 info.rti_info[RTAX_DST];
696 if (sina->sin_other & SIN_PROXY) {
697 error = route_get_sdl_index(&info,
698 &sdl_index);
699 if (error != 0)
700 goto fallback;
701 }
702 }
703 error = lla_rt_output(rtm->rtm_type, rtm->rtm_flags,
704 rtm->rtm_rmx.rmx_expire, &info, sdl_index);
705 break;
706 }
707 fallback:
708 #endif /* INET */
709 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt);
710 if (error == 0) {
711 rt_setmetrics(rtm->rtm_inits, rtm, saved_nrt);
712 rtfree(saved_nrt);
713 }
714 break;
715
716 case RTM_DELETE:
717 #ifdef INET
718 /* support for new ARP code */
719 if (info.rti_info[RTAX_GATEWAY] &&
720 (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) &&
721 (rtm->rtm_flags & RTF_LLDATA) != 0) {
722 error = lla_rt_output(rtm->rtm_type, rtm->rtm_flags,
723 rtm->rtm_rmx.rmx_expire, &info, 0);
724 break;
725 }
726 #endif /* INET */
727 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt);
728 if (error != 0)
729 break;
730
731 rt = saved_nrt;
732 info.rti_info[RTAX_DST] = rt_getkey(rt);
733 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
734 info.rti_info[RTAX_NETMASK] = rt_mask(rt);
735 info.rti_info[RTAX_TAG] = rt_gettag(rt);
736 error = route_output_report(rt, &info, rtm, &new_rtm);
737 if (error)
738 senderr(error);
739 if (new_rtm != NULL) {
740 old_rtm = rtm;
741 rtm = new_rtm;
742 }
743 break;
744
745 case RTM_GET:
746 case RTM_CHANGE:
747 case RTM_LOCK:
748 /* XXX This will mask info.rti_info[RTAX_DST] with
749 * info.rti_info[RTAX_NETMASK] before
750 * searching. It did not used to do that. --dyoung
751 */
752 rt = NULL;
753 error = rtrequest1(RTM_GET, &info, &rt);
754 if (error != 0)
755 senderr(error);
756 if (rtm->rtm_type != RTM_GET) {/* XXX: too grotty */
757 if (memcmp(info.rti_info[RTAX_DST], rt_getkey(rt),
758 info.rti_info[RTAX_DST]->sa_len) != 0)
759 senderr(ESRCH);
760 if (info.rti_info[RTAX_NETMASK] == NULL &&
761 rt_mask(rt) != NULL)
762 senderr(ETOOMANYREFS);
763 }
764
765 /*
766 * XXX if arp/ndp requests an L2 entry, we have to obtain
767 * it from lltable while for the route command we have to
768 * return a route as it is. How to distinguish them?
769 * For newer arp/ndp, RTF_LLDATA flag set by arp/ndp
770 * indicates an L2 entry is requested. For old arp/ndp
771 * binaries, we check RTF_UP flag is NOT set; it works
772 * by the fact that arp/ndp don't set it while the route
773 * command sets it.
774 */
775 if (((rtm->rtm_flags & RTF_LLDATA) != 0 ||
776 (rtm->rtm_flags & RTF_UP) == 0) &&
777 rtm->rtm_type == RTM_GET &&
778 sockaddr_cmp(rt_getkey(rt), info.rti_info[RTAX_DST]) != 0) {
779 int ll_flags = 0;
780 route_get_sdl(rt->rt_ifp, info.rti_info[RTAX_DST], &sdl,
781 &ll_flags);
782 info.rti_info[RTAX_GATEWAY] = sstocsa(&sdl);
783 error = route_output_report(rt, &info, rtm, &new_rtm);
784 if (error)
785 senderr(error);
786 if (new_rtm != NULL) {
787 old_rtm = rtm;
788 rtm = new_rtm;
789 }
790 rtm->rtm_flags |= RTF_LLDATA;
791 rtm->rtm_flags |= (ll_flags & LLE_STATIC) ? RTF_STATIC : 0;
792 break;
793 }
794
795 switch (rtm->rtm_type) {
796 case RTM_GET:
797 info.rti_info[RTAX_DST] = rt_getkey(rt);
798 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
799 info.rti_info[RTAX_NETMASK] = rt_mask(rt);
800 info.rti_info[RTAX_TAG] = rt_gettag(rt);
801 error = route_output_report(rt, &info, rtm, &new_rtm);
802 if (error)
803 senderr(error);
804 if (new_rtm != NULL) {
805 old_rtm = rtm;
806 rtm = new_rtm;
807 }
808 break;
809
810 case RTM_CHANGE:
811 /*
812 * new gateway could require new ifaddr, ifp;
813 * flags may also be different; ifp may be specified
814 * by ll sockaddr when protocol address is ambiguous
815 */
816 if ((error = rt_getifa(&info)) != 0)
817 senderr(error);
818 if (info.rti_info[RTAX_GATEWAY]) {
819 error = rt_setgate(rt,
820 info.rti_info[RTAX_GATEWAY]);
821 if (error != 0)
822 senderr(error);
823 }
824 if (info.rti_info[RTAX_TAG]) {
825 const struct sockaddr *tag;
826 tag = rt_settag(rt, info.rti_info[RTAX_TAG]);
827 if (tag == NULL)
828 senderr(ENOBUFS);
829 }
830 /* new gateway could require new ifaddr, ifp;
831 flags may also be different; ifp may be specified
832 by ll sockaddr when protocol address is ambiguous */
833 ifa = route_output_get_ifa(info, rt, &ifp);
834 if (ifa) {
835 struct ifaddr *oifa = rt->rt_ifa;
836 if (oifa != ifa) {
837 if (oifa && oifa->ifa_rtrequest) {
838 oifa->ifa_rtrequest(RTM_DELETE,
839 rt, &info);
840 }
841 rt_replace_ifa(rt, ifa);
842 rt->rt_ifp = ifp;
843 }
844 }
845 if (ifp && rt->rt_ifp != ifp)
846 rt->rt_ifp = ifp;
847 rt_setmetrics(rtm->rtm_inits, rtm, rt);
848 if (rt->rt_flags != info.rti_flags)
849 rt->rt_flags = (info.rti_flags & ~PRESERVED_RTF)
850 | (rt->rt_flags & PRESERVED_RTF);
851 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
852 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info);
853 /*FALLTHROUGH*/
854 case RTM_LOCK:
855 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
856 rt->rt_rmx.rmx_locks |=
857 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
858 break;
859 }
860 break;
861
862 default:
863 senderr(EOPNOTSUPP);
864 }
865
866 flush:
867 if (rtm) {
868 if (error)
869 rtm->rtm_errno = error;
870 else
871 rtm->rtm_flags |= RTF_DONE;
872 }
873 family = info.rti_info[RTAX_DST] ? info.rti_info[RTAX_DST]->sa_family :
874 0;
875 /* We cannot free old_rtm until we have stopped using the
876 * pointers in info, some of which may point to sockaddrs
877 * in old_rtm.
878 */
879 if (old_rtm != NULL)
880 Free(old_rtm);
881 if (rt)
882 rtfree(rt);
883 {
884 struct rawcb *rp = NULL;
885 /*
886 * Check to see if we don't want our own messages.
887 */
888 if ((so->so_options & SO_USELOOPBACK) == 0) {
889 if (COMPATNAME(route_info).ri_cb.any_count <= 1) {
890 if (rtm)
891 Free(rtm);
892 m_freem(m);
893 return error;
894 }
895 /* There is another listener, so construct message */
896 rp = sotorawcb(so);
897 }
898 if (rtm) {
899 m_copyback(m, 0, rtm->rtm_msglen, rtm);
900 if (m->m_pkthdr.len < rtm->rtm_msglen) {
901 m_freem(m);
902 m = NULL;
903 } else if (m->m_pkthdr.len > rtm->rtm_msglen)
904 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
905 Free(rtm);
906 }
907 if (rp)
908 rp->rcb_proto.sp_family = 0; /* Avoid us */
909 if (family)
910 proto.sp_protocol = family;
911 if (m)
912 raw_input(m, &proto, &COMPATNAME(route_info).ri_src,
913 &COMPATNAME(route_info).ri_dst);
914 if (rp)
915 rp->rcb_proto.sp_family = PF_XROUTE;
916 }
917 return error;
918 }
919
920 static void
rt_setmetrics(int which,const struct rt_xmsghdr * in,struct rtentry * out)921 rt_setmetrics(int which, const struct rt_xmsghdr *in, struct rtentry *out)
922 {
923 #define metric(f, e) if (which & (f)) out->rt_rmx.e = in->rtm_rmx.e;
924 metric(RTV_RPIPE, rmx_recvpipe);
925 metric(RTV_SPIPE, rmx_sendpipe);
926 metric(RTV_SSTHRESH, rmx_ssthresh);
927 metric(RTV_RTT, rmx_rtt);
928 metric(RTV_RTTVAR, rmx_rttvar);
929 metric(RTV_HOPCOUNT, rmx_hopcount);
930 metric(RTV_MTU, rmx_mtu);
931 #undef metric
932 if (which & RTV_EXPIRE) {
933 out->rt_rmx.rmx_expire = in->rtm_rmx.rmx_expire ?
934 time_wall_to_mono(in->rtm_rmx.rmx_expire) : 0;
935 }
936 }
937
938 static void
rtm_setmetrics(const struct rtentry * in,struct rt_xmsghdr * out)939 rtm_setmetrics(const struct rtentry *in, struct rt_xmsghdr *out)
940 {
941 #define metric(e) out->rtm_rmx.e = in->rt_rmx.e;
942 metric(rmx_recvpipe);
943 metric(rmx_sendpipe);
944 metric(rmx_ssthresh);
945 metric(rmx_rtt);
946 metric(rmx_rttvar);
947 metric(rmx_hopcount);
948 metric(rmx_mtu);
949 #undef metric
950 out->rtm_rmx.rmx_expire = in->rt_rmx.rmx_expire ?
951 time_mono_to_wall(in->rt_rmx.rmx_expire) : 0;
952 }
953
954 static int
rt_xaddrs(u_char rtmtype,const char * cp,const char * cplim,struct rt_addrinfo * rtinfo)955 rt_xaddrs(u_char rtmtype, const char *cp, const char *cplim,
956 struct rt_addrinfo *rtinfo)
957 {
958 const struct sockaddr *sa = NULL; /* Quell compiler warning */
959 int i;
960
961 for (i = 0; i < RTAX_MAX && cp < cplim; i++) {
962 if ((rtinfo->rti_addrs & (1 << i)) == 0)
963 continue;
964 rtinfo->rti_info[i] = sa = (const struct sockaddr *)cp;
965 RT_XADVANCE(cp, sa);
966 }
967
968 /*
969 * Check for extra addresses specified, except RTM_GET asking
970 * for interface info.
971 */
972 if (rtmtype == RTM_GET) {
973 if (((rtinfo->rti_addrs &
974 (~((1 << RTAX_IFP) | (1 << RTAX_IFA)))) & (~0U << i)) != 0)
975 return 1;
976 } else if ((rtinfo->rti_addrs & (~0U << i)) != 0)
977 return 1;
978 /* Check for bad data length. */
979 if (cp != cplim) {
980 if (i == RTAX_NETMASK + 1 && sa != NULL &&
981 cp - RT_XROUNDUP(sa->sa_len) + sa->sa_len == cplim)
982 /*
983 * The last sockaddr was info.rti_info[RTAX_NETMASK].
984 * We accept this for now for the sake of old
985 * binaries or third party softwares.
986 */
987 ;
988 else
989 return 1;
990 }
991 return 0;
992 }
993
994 static int
rt_getlen(int type)995 rt_getlen(int type)
996 {
997 #ifndef COMPAT_RTSOCK
998 CTASSERT(__alignof(struct ifa_msghdr) >= sizeof(uint64_t));
999 CTASSERT(__alignof(struct if_msghdr) >= sizeof(uint64_t));
1000 CTASSERT(__alignof(struct if_announcemsghdr) >= sizeof(uint64_t));
1001 CTASSERT(__alignof(struct rt_msghdr) >= sizeof(uint64_t));
1002 #endif
1003
1004 switch (type) {
1005 case RTM_DELADDR:
1006 case RTM_NEWADDR:
1007 case RTM_CHGADDR:
1008 return sizeof(struct ifa_xmsghdr);
1009
1010 case RTM_OOIFINFO:
1011 #ifdef COMPAT_14
1012 return sizeof(struct if_msghdr14);
1013 #else
1014 #ifdef DIAGNOSTIC
1015 printf("RTM_OOIFINFO\n");
1016 #endif
1017 return -1;
1018 #endif
1019 case RTM_OIFINFO:
1020 #ifdef COMPAT_50
1021 return sizeof(struct if_msghdr50);
1022 #else
1023 #ifdef DIAGNOSTIC
1024 printf("RTM_OIFINFO\n");
1025 #endif
1026 return -1;
1027 #endif
1028
1029 case RTM_IFINFO:
1030 return sizeof(struct if_xmsghdr);
1031
1032 case RTM_IFANNOUNCE:
1033 case RTM_IEEE80211:
1034 return sizeof(struct if_xannouncemsghdr);
1035
1036 default:
1037 return sizeof(struct rt_xmsghdr);
1038 }
1039 }
1040
1041
1042 struct mbuf *
COMPATNAME(rt_msg1)1043 COMPATNAME(rt_msg1)(int type, struct rt_addrinfo *rtinfo, void *data, int datalen)
1044 {
1045 struct rt_xmsghdr *rtm;
1046 struct mbuf *m;
1047 int i;
1048 const struct sockaddr *sa;
1049 int len, dlen;
1050
1051 m = m_gethdr(M_DONTWAIT, MT_DATA);
1052 if (m == NULL)
1053 return m;
1054 MCLAIM(m, &COMPATNAME(routedomain).dom_mowner);
1055
1056 if ((len = rt_getlen(type)) == -1)
1057 goto out;
1058 if (len > MHLEN + MLEN)
1059 panic("%s: message too long", __func__);
1060 else if (len > MHLEN) {
1061 m->m_next = m_get(M_DONTWAIT, MT_DATA);
1062 if (m->m_next == NULL)
1063 goto out;
1064 MCLAIM(m->m_next, m->m_owner);
1065 m->m_pkthdr.len = len;
1066 m->m_len = MHLEN;
1067 m->m_next->m_len = len - MHLEN;
1068 } else {
1069 m->m_pkthdr.len = m->m_len = len;
1070 }
1071 m_reset_rcvif(m);
1072 m_copyback(m, 0, datalen, data);
1073 if (len > datalen)
1074 (void)memset(mtod(m, char *) + datalen, 0, len - datalen);
1075 rtm = mtod(m, struct rt_xmsghdr *);
1076 for (i = 0; i < RTAX_MAX; i++) {
1077 if ((sa = rtinfo->rti_info[i]) == NULL)
1078 continue;
1079 rtinfo->rti_addrs |= (1 << i);
1080 dlen = RT_XROUNDUP(sa->sa_len);
1081 m_copyback(m, len, sa->sa_len, sa);
1082 if (dlen != sa->sa_len) {
1083 /*
1084 * Up to 6 + 1 nul's since roundup is to
1085 * sizeof(uint64_t) (8 bytes)
1086 */
1087 m_copyback(m, len + sa->sa_len,
1088 dlen - sa->sa_len, "\0\0\0\0\0\0");
1089 }
1090 len += dlen;
1091 }
1092 if (m->m_pkthdr.len != len)
1093 goto out;
1094 rtm->rtm_msglen = len;
1095 rtm->rtm_version = RTM_XVERSION;
1096 rtm->rtm_type = type;
1097 return m;
1098 out:
1099 m_freem(m);
1100 return NULL;
1101 }
1102
1103 /*
1104 * rt_msg2
1105 *
1106 * fills 'cp' or 'w'.w_tmem with the routing socket message and
1107 * returns the length of the message in 'lenp'.
1108 *
1109 * if walkarg is 0, cp is expected to be 0 or a buffer large enough to hold
1110 * the message
1111 * otherwise walkarg's w_needed is updated and if the user buffer is
1112 * specified and w_needed indicates space exists the information is copied
1113 * into the temp space (w_tmem). w_tmem is [re]allocated if necessary,
1114 * if the allocation fails ENOBUFS is returned.
1115 */
1116 static int
rt_msg2(int type,struct rt_addrinfo * rtinfo,void * cpv,struct rt_walkarg * w,int * lenp)1117 rt_msg2(int type, struct rt_addrinfo *rtinfo, void *cpv, struct rt_walkarg *w,
1118 int *lenp)
1119 {
1120 int i;
1121 int len, dlen, second_time = 0;
1122 char *cp0, *cp = cpv;
1123
1124 rtinfo->rti_addrs = 0;
1125 again:
1126 if ((len = rt_getlen(type)) == -1)
1127 return EINVAL;
1128
1129 if ((cp0 = cp) != NULL)
1130 cp += len;
1131 for (i = 0; i < RTAX_MAX; i++) {
1132 const struct sockaddr *sa;
1133
1134 if ((sa = rtinfo->rti_info[i]) == NULL)
1135 continue;
1136 rtinfo->rti_addrs |= (1 << i);
1137 dlen = RT_XROUNDUP(sa->sa_len);
1138 if (cp) {
1139 int diff = dlen - sa->sa_len;
1140 (void)memcpy(cp, sa, (size_t)sa->sa_len);
1141 cp += sa->sa_len;
1142 if (diff > 0) {
1143 (void)memset(cp, 0, (size_t)diff);
1144 cp += diff;
1145 }
1146 }
1147 len += dlen;
1148 }
1149 if (cp == NULL && w != NULL && !second_time) {
1150 struct rt_walkarg *rw = w;
1151
1152 rw->w_needed += len;
1153 if (rw->w_needed <= 0 && rw->w_where) {
1154 if (rw->w_tmemsize < len) {
1155 if (rw->w_tmem)
1156 free(rw->w_tmem, M_RTABLE);
1157 rw->w_tmem = malloc(len, M_RTABLE, M_NOWAIT);
1158 if (rw->w_tmem)
1159 rw->w_tmemsize = len;
1160 else
1161 rw->w_tmemsize = 0;
1162 }
1163 if (rw->w_tmem) {
1164 cp = rw->w_tmem;
1165 second_time = 1;
1166 goto again;
1167 } else {
1168 rw->w_tmemneeded = len;
1169 return ENOBUFS;
1170 }
1171 }
1172 }
1173 if (cp) {
1174 struct rt_xmsghdr *rtm = (struct rt_xmsghdr *)cp0;
1175
1176 rtm->rtm_version = RTM_XVERSION;
1177 rtm->rtm_type = type;
1178 rtm->rtm_msglen = len;
1179 }
1180 if (lenp)
1181 *lenp = len;
1182 return 0;
1183 }
1184
1185 #ifndef COMPAT_RTSOCK
1186 int
rt_msg3(int type,struct rt_addrinfo * rtinfo,void * cpv,struct rt_walkarg * w,int * lenp)1187 rt_msg3(int type, struct rt_addrinfo *rtinfo, void *cpv, struct rt_walkarg *w,
1188 int *lenp)
1189 {
1190 return rt_msg2(type, rtinfo, cpv, w, lenp);
1191 }
1192 #endif
1193
1194 /*
1195 * This routine is called to generate a message from the routing
1196 * socket indicating that a redirect has occurred, a routing lookup
1197 * has failed, or that a protocol has detected timeouts to a particular
1198 * destination.
1199 */
1200 void
COMPATNAME(rt_missmsg)1201 COMPATNAME(rt_missmsg)(int type, const struct rt_addrinfo *rtinfo, int flags,
1202 int error)
1203 {
1204 struct rt_xmsghdr rtm;
1205 struct mbuf *m;
1206 const struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
1207 struct rt_addrinfo info = *rtinfo;
1208
1209 COMPATCALL(rt_missmsg, (type, rtinfo, flags, error));
1210 if (COMPATNAME(route_info).ri_cb.any_count == 0)
1211 return;
1212 memset(&rtm, 0, sizeof(rtm));
1213 rtm.rtm_pid = curproc->p_pid;
1214 rtm.rtm_flags = RTF_DONE | flags;
1215 rtm.rtm_errno = error;
1216 m = COMPATNAME(rt_msg1)(type, &info, &rtm, sizeof(rtm));
1217 if (m == NULL)
1218 return;
1219 mtod(m, struct rt_xmsghdr *)->rtm_addrs = info.rti_addrs;
1220 COMPATNAME(route_enqueue)(m, sa ? sa->sa_family : 0);
1221 }
1222
1223 /*
1224 * This routine is called to generate a message from the routing
1225 * socket indicating that the status of a network interface has changed.
1226 */
1227 void
COMPATNAME(rt_ifmsg)1228 COMPATNAME(rt_ifmsg)(struct ifnet *ifp)
1229 {
1230 struct if_xmsghdr ifm;
1231 struct mbuf *m;
1232 struct rt_addrinfo info;
1233
1234 COMPATCALL(rt_ifmsg, (ifp));
1235 if (COMPATNAME(route_info).ri_cb.any_count == 0)
1236 return;
1237 (void)memset(&info, 0, sizeof(info));
1238 (void)memset(&ifm, 0, sizeof(ifm));
1239 ifm.ifm_index = ifp->if_index;
1240 ifm.ifm_flags = ifp->if_flags;
1241 ifm.ifm_data = ifp->if_data;
1242 ifm.ifm_addrs = 0;
1243 m = COMPATNAME(rt_msg1)(RTM_IFINFO, &info, &ifm, sizeof(ifm));
1244 if (m == NULL)
1245 return;
1246 COMPATNAME(route_enqueue)(m, 0);
1247 #ifdef COMPAT_14
1248 compat_14_rt_oifmsg(ifp);
1249 #endif
1250 #ifdef COMPAT_50
1251 compat_50_rt_oifmsg(ifp);
1252 #endif
1253 }
1254
1255
1256 /*
1257 * This is called to generate messages from the routing socket
1258 * indicating a network interface has had addresses associated with it.
1259 * if we ever reverse the logic and replace messages TO the routing
1260 * socket indicate a request to configure interfaces, then it will
1261 * be unnecessary as the routing socket will automatically generate
1262 * copies of it.
1263 */
1264 void
COMPATNAME(rt_newaddrmsg)1265 COMPATNAME(rt_newaddrmsg)(int cmd, struct ifaddr *ifa, int error,
1266 struct rtentry *rt)
1267 {
1268 #define cmdpass(__cmd, __pass) (((__cmd) << 2) | (__pass))
1269 struct rt_addrinfo info;
1270 const struct sockaddr *sa;
1271 int pass;
1272 struct mbuf *m;
1273 struct ifnet *ifp;
1274 struct rt_xmsghdr rtm;
1275 struct ifa_xmsghdr ifam;
1276 int ncmd;
1277
1278 KASSERT(ifa != NULL);
1279 ifp = ifa->ifa_ifp;
1280 #ifdef SCTP
1281 if (cmd == RTM_ADD) {
1282 sctp_add_ip_address(ifa);
1283 } else if (cmd == RTM_DELETE) {
1284 sctp_delete_ip_address(ifa);
1285 }
1286 #endif
1287
1288 COMPATCALL(rt_newaddrmsg, (cmd, ifa, error, rt));
1289 if (COMPATNAME(route_info).ri_cb.any_count == 0)
1290 return;
1291 for (pass = 1; pass < 3; pass++) {
1292 memset(&info, 0, sizeof(info));
1293 switch (cmdpass(cmd, pass)) {
1294 case cmdpass(RTM_ADD, 1):
1295 case cmdpass(RTM_CHANGE, 1):
1296 case cmdpass(RTM_DELETE, 2):
1297 case cmdpass(RTM_NEWADDR, 1):
1298 case cmdpass(RTM_DELADDR, 1):
1299 case cmdpass(RTM_CHGADDR, 1):
1300 switch (cmd) {
1301 case RTM_ADD:
1302 ncmd = RTM_NEWADDR;
1303 break;
1304 case RTM_DELETE:
1305 ncmd = RTM_DELADDR;
1306 break;
1307 case RTM_CHANGE:
1308 ncmd = RTM_CHGADDR;
1309 break;
1310 default:
1311 ncmd = cmd;
1312 }
1313 info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr;
1314 KASSERT(ifp->if_dl != NULL);
1315 info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr;
1316 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask;
1317 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
1318 memset(&ifam, 0, sizeof(ifam));
1319 ifam.ifam_index = ifp->if_index;
1320 ifam.ifam_metric = ifa->ifa_metric;
1321 ifam.ifam_flags = ifa->ifa_flags;
1322 m = COMPATNAME(rt_msg1)(ncmd, &info, &ifam, sizeof(ifam));
1323 if (m == NULL)
1324 continue;
1325 mtod(m, struct ifa_xmsghdr *)->ifam_addrs =
1326 info.rti_addrs;
1327 break;
1328 case cmdpass(RTM_ADD, 2):
1329 case cmdpass(RTM_CHANGE, 2):
1330 case cmdpass(RTM_DELETE, 1):
1331 if (rt == NULL)
1332 continue;
1333 info.rti_info[RTAX_NETMASK] = rt_mask(rt);
1334 info.rti_info[RTAX_DST] = sa = rt_getkey(rt);
1335 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
1336 memset(&rtm, 0, sizeof(rtm));
1337 rtm.rtm_pid = curproc->p_pid;
1338 rtm.rtm_index = ifp->if_index;
1339 rtm.rtm_flags |= rt->rt_flags;
1340 rtm.rtm_errno = error;
1341 m = COMPATNAME(rt_msg1)(cmd, &info, &rtm, sizeof(rtm));
1342 if (m == NULL)
1343 continue;
1344 mtod(m, struct rt_xmsghdr *)->rtm_addrs = info.rti_addrs;
1345 break;
1346 default:
1347 continue;
1348 }
1349 #ifdef DIAGNOSTIC
1350 if (m == NULL)
1351 panic("%s: called with wrong command", __func__);
1352 #endif
1353 COMPATNAME(route_enqueue)(m, sa ? sa->sa_family : 0);
1354 }
1355 #undef cmdpass
1356 }
1357
1358 static struct mbuf *
rt_makeifannouncemsg(struct ifnet * ifp,int type,int what,struct rt_addrinfo * info)1359 rt_makeifannouncemsg(struct ifnet *ifp, int type, int what,
1360 struct rt_addrinfo *info)
1361 {
1362 struct if_xannouncemsghdr ifan;
1363
1364 memset(info, 0, sizeof(*info));
1365 memset(&ifan, 0, sizeof(ifan));
1366 ifan.ifan_index = ifp->if_index;
1367 strlcpy(ifan.ifan_name, ifp->if_xname, sizeof(ifan.ifan_name));
1368 ifan.ifan_what = what;
1369 return COMPATNAME(rt_msg1)(type, info, &ifan, sizeof(ifan));
1370 }
1371
1372 /*
1373 * This is called to generate routing socket messages indicating
1374 * network interface arrival and departure.
1375 */
1376 void
COMPATNAME(rt_ifannouncemsg)1377 COMPATNAME(rt_ifannouncemsg)(struct ifnet *ifp, int what)
1378 {
1379 struct mbuf *m;
1380 struct rt_addrinfo info;
1381
1382 COMPATCALL(rt_ifannouncemsg, (ifp, what));
1383 if (COMPATNAME(route_info).ri_cb.any_count == 0)
1384 return;
1385 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info);
1386 if (m == NULL)
1387 return;
1388 COMPATNAME(route_enqueue)(m, 0);
1389 }
1390
1391 /*
1392 * This is called to generate routing socket messages indicating
1393 * IEEE80211 wireless events.
1394 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way.
1395 */
1396 void
COMPATNAME(rt_ieee80211msg)1397 COMPATNAME(rt_ieee80211msg)(struct ifnet *ifp, int what, void *data,
1398 size_t data_len)
1399 {
1400 struct mbuf *m;
1401 struct rt_addrinfo info;
1402
1403 COMPATCALL(rt_ieee80211msg, (ifp, what, data, data_len));
1404 if (COMPATNAME(route_info).ri_cb.any_count == 0)
1405 return;
1406 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info);
1407 if (m == NULL)
1408 return;
1409 /*
1410 * Append the ieee80211 data. Try to stick it in the
1411 * mbuf containing the ifannounce msg; otherwise allocate
1412 * a new mbuf and append.
1413 *
1414 * NB: we assume m is a single mbuf.
1415 */
1416 if (data_len > M_TRAILINGSPACE(m)) {
1417 struct mbuf *n = m_get(M_NOWAIT, MT_DATA);
1418 if (n == NULL) {
1419 m_freem(m);
1420 return;
1421 }
1422 (void)memcpy(mtod(n, void *), data, data_len);
1423 n->m_len = data_len;
1424 m->m_next = n;
1425 } else if (data_len > 0) {
1426 (void)memcpy(mtod(m, uint8_t *) + m->m_len, data, data_len);
1427 m->m_len += data_len;
1428 }
1429 if (m->m_flags & M_PKTHDR)
1430 m->m_pkthdr.len += data_len;
1431 mtod(m, struct if_xannouncemsghdr *)->ifan_msglen += data_len;
1432 COMPATNAME(route_enqueue)(m, 0);
1433 }
1434
1435 /*
1436 * This is used in dumping the kernel table via sysctl().
1437 */
1438 static int
sysctl_dumpentry(struct rtentry * rt,void * v)1439 sysctl_dumpentry(struct rtentry *rt, void *v)
1440 {
1441 struct rt_walkarg *w = v;
1442 int error = 0, size;
1443 struct rt_addrinfo info;
1444
1445 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
1446 return 0;
1447 memset(&info, 0, sizeof(info));
1448 info.rti_info[RTAX_DST] = rt_getkey(rt);
1449 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
1450 info.rti_info[RTAX_NETMASK] = rt_mask(rt);
1451 info.rti_info[RTAX_TAG] = rt_gettag(rt);
1452 if (rt->rt_ifp) {
1453 const struct ifaddr *rtifa;
1454 info.rti_info[RTAX_IFP] = rt->rt_ifp->if_dl->ifa_addr;
1455 /* rtifa used to be simply rt->rt_ifa. If rt->rt_ifa != NULL,
1456 * then rt_get_ifa() != NULL. So this ought to still be safe.
1457 * --dyoung
1458 */
1459 rtifa = rt_get_ifa(rt);
1460 info.rti_info[RTAX_IFA] = rtifa->ifa_addr;
1461 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
1462 info.rti_info[RTAX_BRD] = rtifa->ifa_dstaddr;
1463 }
1464 if ((error = rt_msg2(RTM_GET, &info, 0, w, &size)))
1465 return error;
1466 if (w->w_where && w->w_tmem && w->w_needed <= 0) {
1467 struct rt_xmsghdr *rtm = (struct rt_xmsghdr *)w->w_tmem;
1468
1469 rtm->rtm_flags = rt->rt_flags;
1470 rtm->rtm_use = rt->rt_use;
1471 rtm_setmetrics(rt, rtm);
1472 KASSERT(rt->rt_ifp != NULL);
1473 rtm->rtm_index = rt->rt_ifp->if_index;
1474 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
1475 rtm->rtm_addrs = info.rti_addrs;
1476 if ((error = copyout(rtm, w->w_where, size)) != 0)
1477 w->w_where = NULL;
1478 else
1479 w->w_where = (char *)w->w_where + size;
1480 }
1481 return error;
1482 }
1483
1484 static int
sysctl_iflist(int af,struct rt_walkarg * w,int type)1485 sysctl_iflist(int af, struct rt_walkarg *w, int type)
1486 {
1487 struct ifnet *ifp;
1488 struct ifaddr *ifa;
1489 struct rt_addrinfo info;
1490 int len, error = 0;
1491 int s;
1492 struct psref psref;
1493 int bound = curlwp_bind();
1494
1495 memset(&info, 0, sizeof(info));
1496
1497 s = pserialize_read_enter();
1498 IFNET_READER_FOREACH(ifp) {
1499 if (w->w_arg && w->w_arg != ifp->if_index)
1500 continue;
1501 if (IFADDR_READER_EMPTY(ifp))
1502 continue;
1503
1504 psref_acquire(&psref, &ifp->if_psref, ifnet_psref_class);
1505 pserialize_read_exit(s);
1506
1507 info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr;
1508 switch (type) {
1509 case NET_RT_IFLIST:
1510 error = rt_msg2(RTM_IFINFO, &info, NULL, w, &len);
1511 break;
1512 #ifdef COMPAT_14
1513 case NET_RT_OOIFLIST:
1514 error = rt_msg2(RTM_OOIFINFO, &info, NULL, w, &len);
1515 break;
1516 #endif
1517 #ifdef COMPAT_50
1518 case NET_RT_OIFLIST:
1519 error = rt_msg2(RTM_OIFINFO, &info, NULL, w, &len);
1520 break;
1521 #endif
1522 default:
1523 panic("sysctl_iflist(1)");
1524 }
1525 if (error)
1526 goto release_exit;
1527 info.rti_info[RTAX_IFP] = NULL;
1528 if (w->w_where && w->w_tmem && w->w_needed <= 0) {
1529 switch (type) {
1530 case NET_RT_IFLIST: {
1531 struct if_xmsghdr *ifm;
1532
1533 ifm = (struct if_xmsghdr *)w->w_tmem;
1534 ifm->ifm_index = ifp->if_index;
1535 ifm->ifm_flags = ifp->if_flags;
1536 ifm->ifm_data = ifp->if_data;
1537 ifm->ifm_addrs = info.rti_addrs;
1538 error = copyout(ifm, w->w_where, len);
1539 if (error)
1540 goto release_exit;
1541 w->w_where = (char *)w->w_where + len;
1542 break;
1543 }
1544
1545 #ifdef COMPAT_14
1546 case NET_RT_OOIFLIST:
1547 error = compat_14_iflist(ifp, w, &info, len);
1548 if (error)
1549 goto release_exit;
1550 break;
1551 #endif
1552 #ifdef COMPAT_50
1553 case NET_RT_OIFLIST:
1554 error = compat_50_iflist(ifp, w, &info, len);
1555 if (error)
1556 goto release_exit;
1557 break;
1558 #endif
1559 default:
1560 panic("sysctl_iflist(2)");
1561 }
1562 }
1563 IFADDR_READER_FOREACH(ifa, ifp) {
1564 if (af && af != ifa->ifa_addr->sa_family)
1565 continue;
1566 info.rti_info[RTAX_IFA] = ifa->ifa_addr;
1567 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask;
1568 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
1569 if ((error = rt_msg2(RTM_NEWADDR, &info, 0, w, &len)))
1570 goto release_exit;
1571 if (w->w_where && w->w_tmem && w->w_needed <= 0) {
1572 struct ifa_xmsghdr *ifam;
1573
1574 ifam = (struct ifa_xmsghdr *)w->w_tmem;
1575 ifam->ifam_index = ifa->ifa_ifp->if_index;
1576 ifam->ifam_flags = ifa->ifa_flags;
1577 ifam->ifam_metric = ifa->ifa_metric;
1578 ifam->ifam_addrs = info.rti_addrs;
1579 error = copyout(w->w_tmem, w->w_where, len);
1580 if (error)
1581 goto release_exit;
1582 w->w_where = (char *)w->w_where + len;
1583 }
1584 }
1585 info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] =
1586 info.rti_info[RTAX_BRD] = NULL;
1587
1588 s = pserialize_read_enter();
1589 psref_release(&psref, &ifp->if_psref, ifnet_psref_class);
1590 }
1591 pserialize_read_exit(s);
1592 curlwp_bindx(bound);
1593
1594 return 0;
1595
1596 release_exit:
1597 psref_release(&psref, &ifp->if_psref, ifnet_psref_class);
1598 curlwp_bindx(bound);
1599 return error;
1600 }
1601
1602 static int
sysctl_rtable(SYSCTLFN_ARGS)1603 sysctl_rtable(SYSCTLFN_ARGS)
1604 {
1605 void *where = oldp;
1606 size_t *given = oldlenp;
1607 int i, s, error = EINVAL;
1608 u_char af;
1609 struct rt_walkarg w;
1610
1611 if (namelen == 1 && name[0] == CTL_QUERY)
1612 return sysctl_query(SYSCTLFN_CALL(rnode));
1613
1614 if (newp)
1615 return EPERM;
1616 if (namelen != 3)
1617 return EINVAL;
1618 af = name[0];
1619 w.w_tmemneeded = 0;
1620 w.w_tmemsize = 0;
1621 w.w_tmem = NULL;
1622 again:
1623 /* we may return here if a later [re]alloc of the t_mem buffer fails */
1624 if (w.w_tmemneeded) {
1625 w.w_tmem = malloc(w.w_tmemneeded, M_RTABLE, M_WAITOK);
1626 w.w_tmemsize = w.w_tmemneeded;
1627 w.w_tmemneeded = 0;
1628 }
1629 w.w_op = name[1];
1630 w.w_arg = name[2];
1631 w.w_given = *given;
1632 w.w_needed = 0 - w.w_given;
1633 w.w_where = where;
1634
1635 s = splsoftnet();
1636 switch (w.w_op) {
1637
1638 case NET_RT_DUMP:
1639 case NET_RT_FLAGS:
1640 #ifdef INET
1641 /*
1642 * take care of llinfo entries, the caller must
1643 * specify an AF
1644 */
1645 if (w.w_op == NET_RT_FLAGS &&
1646 (w.w_arg == 0 || w.w_arg & RTF_LLDATA)) {
1647 if (af != 0)
1648 error = lltable_sysctl_dumparp(af, &w);
1649 else
1650 error = EINVAL;
1651 break;
1652 }
1653 #endif /* INET */
1654
1655 for (i = 1; i <= AF_MAX; i++)
1656 if ((af == 0 || af == i) &&
1657 (error = rt_walktree(i, sysctl_dumpentry, &w)))
1658 break;
1659 break;
1660
1661 #ifdef COMPAT_14
1662 case NET_RT_OOIFLIST:
1663 error = sysctl_iflist(af, &w, w.w_op);
1664 break;
1665 #endif
1666 #ifdef COMPAT_50
1667 case NET_RT_OIFLIST:
1668 error = sysctl_iflist(af, &w, w.w_op);
1669 break;
1670 #endif
1671 case NET_RT_IFLIST:
1672 error = sysctl_iflist(af, &w, w.w_op);
1673 break;
1674 }
1675 splx(s);
1676
1677 /* check to see if we couldn't allocate memory with NOWAIT */
1678 if (error == ENOBUFS && w.w_tmem == 0 && w.w_tmemneeded)
1679 goto again;
1680
1681 if (w.w_tmem)
1682 free(w.w_tmem, M_RTABLE);
1683 w.w_needed += w.w_given;
1684 if (where) {
1685 *given = (char *)w.w_where - (char *)where;
1686 if (*given < w.w_needed)
1687 return ENOMEM;
1688 } else {
1689 *given = (11 * w.w_needed) / 10;
1690 }
1691 return error;
1692 }
1693
1694 /*
1695 * Routing message software interrupt routine
1696 */
1697 static void
COMPATNAME(route_intr)1698 COMPATNAME(route_intr)(void *cookie)
1699 {
1700 struct sockproto proto = { .sp_family = PF_XROUTE, };
1701 struct route_info * const ri = &COMPATNAME(route_info);
1702 struct mbuf *m;
1703 int s;
1704
1705 mutex_enter(softnet_lock);
1706 KERNEL_LOCK(1, NULL);
1707 while (!IF_IS_EMPTY(&ri->ri_intrq)) {
1708 s = splnet();
1709 IF_DEQUEUE(&ri->ri_intrq, m);
1710 splx(s);
1711 if (m == NULL)
1712 break;
1713 proto.sp_protocol = M_GETCTX(m, uintptr_t);
1714 raw_input(m, &proto, &ri->ri_src, &ri->ri_dst);
1715 }
1716 KERNEL_UNLOCK_ONE(NULL);
1717 mutex_exit(softnet_lock);
1718 }
1719
1720 /*
1721 * Enqueue a message to the software interrupt routine.
1722 */
1723 void
COMPATNAME(route_enqueue)1724 COMPATNAME(route_enqueue)(struct mbuf *m, int family)
1725 {
1726 struct route_info * const ri = &COMPATNAME(route_info);
1727 int s, wasempty;
1728
1729 s = splnet();
1730 if (IF_QFULL(&ri->ri_intrq)) {
1731 IF_DROP(&ri->ri_intrq);
1732 m_freem(m);
1733 } else {
1734 wasempty = IF_IS_EMPTY(&ri->ri_intrq);
1735 M_SETCTX(m, (uintptr_t)family);
1736 IF_ENQUEUE(&ri->ri_intrq, m);
1737 if (wasempty)
1738 softint_schedule(ri->ri_sih);
1739 }
1740 splx(s);
1741 }
1742
1743 static void
COMPATNAME(route_init)1744 COMPATNAME(route_init)(void)
1745 {
1746 struct route_info * const ri = &COMPATNAME(route_info);
1747
1748 #ifndef COMPAT_RTSOCK
1749 rt_init();
1750 #endif
1751
1752 sysctl_net_route_setup(NULL);
1753 ri->ri_intrq.ifq_maxlen = ri->ri_maxqlen;
1754 ri->ri_sih = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE,
1755 COMPATNAME(route_intr), NULL);
1756 }
1757
1758 /*
1759 * Definitions of protocols supported in the ROUTE domain.
1760 */
1761 #ifndef COMPAT_RTSOCK
1762 PR_WRAP_USRREQS(route);
1763 #else
1764 PR_WRAP_USRREQS(compat_50_route);
1765 #endif
1766
1767 static const struct pr_usrreqs route_usrreqs = {
1768 .pr_attach = COMPATNAME(route_attach_wrapper),
1769 .pr_detach = COMPATNAME(route_detach_wrapper),
1770 .pr_accept = COMPATNAME(route_accept_wrapper),
1771 .pr_bind = COMPATNAME(route_bind_wrapper),
1772 .pr_listen = COMPATNAME(route_listen_wrapper),
1773 .pr_connect = COMPATNAME(route_connect_wrapper),
1774 .pr_connect2 = COMPATNAME(route_connect2_wrapper),
1775 .pr_disconnect = COMPATNAME(route_disconnect_wrapper),
1776 .pr_shutdown = COMPATNAME(route_shutdown_wrapper),
1777 .pr_abort = COMPATNAME(route_abort_wrapper),
1778 .pr_ioctl = COMPATNAME(route_ioctl_wrapper),
1779 .pr_stat = COMPATNAME(route_stat_wrapper),
1780 .pr_peeraddr = COMPATNAME(route_peeraddr_wrapper),
1781 .pr_sockaddr = COMPATNAME(route_sockaddr_wrapper),
1782 .pr_rcvd = COMPATNAME(route_rcvd_wrapper),
1783 .pr_recvoob = COMPATNAME(route_recvoob_wrapper),
1784 .pr_send = COMPATNAME(route_send_wrapper),
1785 .pr_sendoob = COMPATNAME(route_sendoob_wrapper),
1786 .pr_purgeif = COMPATNAME(route_purgeif_wrapper),
1787 };
1788
1789 static const struct protosw COMPATNAME(route_protosw)[] = {
1790 {
1791 .pr_type = SOCK_RAW,
1792 .pr_domain = &COMPATNAME(routedomain),
1793 .pr_flags = PR_ATOMIC|PR_ADDR,
1794 .pr_input = raw_input,
1795 .pr_ctlinput = raw_ctlinput,
1796 .pr_usrreqs = &route_usrreqs,
1797 .pr_init = raw_init,
1798 },
1799 };
1800
1801 struct domain COMPATNAME(routedomain) = {
1802 .dom_family = PF_XROUTE,
1803 .dom_name = DOMAINNAME,
1804 .dom_init = COMPATNAME(route_init),
1805 .dom_protosw = COMPATNAME(route_protosw),
1806 .dom_protoswNPROTOSW =
1807 &COMPATNAME(route_protosw)[__arraycount(COMPATNAME(route_protosw))],
1808 };
1809
1810 static void
sysctl_net_route_setup(struct sysctllog ** clog)1811 sysctl_net_route_setup(struct sysctllog **clog)
1812 {
1813 const struct sysctlnode *rnode = NULL;
1814
1815 sysctl_createv(clog, 0, NULL, &rnode,
1816 CTLFLAG_PERMANENT,
1817 CTLTYPE_NODE, DOMAINNAME,
1818 SYSCTL_DESCR("PF_ROUTE information"),
1819 NULL, 0, NULL, 0,
1820 CTL_NET, PF_XROUTE, CTL_EOL);
1821
1822 sysctl_createv(clog, 0, NULL, NULL,
1823 CTLFLAG_PERMANENT,
1824 CTLTYPE_NODE, "rtable",
1825 SYSCTL_DESCR("Routing table information"),
1826 sysctl_rtable, 0, NULL, 0,
1827 CTL_NET, PF_XROUTE, 0 /* any protocol */, CTL_EOL);
1828
1829 sysctl_createv(clog, 0, &rnode, NULL,
1830 CTLFLAG_PERMANENT,
1831 CTLTYPE_STRUCT, "stats",
1832 SYSCTL_DESCR("Routing statistics"),
1833 NULL, 0, &rtstat, sizeof(rtstat),
1834 CTL_CREATE, CTL_EOL);
1835 }
1836