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[dragonfly.git] / sys / net / rtsock.c
CommitLineData
f3ed2586
JH
1/*
2 * Copyright (c) 2004, 2005 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Jeffrey M. Hsu.
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 DragonFly Project nor the names of its
16 * contributors may be used to endorse or promote products derived
17 * from this software without specific, prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
29 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33/*
34 * Copyright (c) 2004, 2005 Jeffrey M. Hsu. All rights reserved.
35 *
36 * License terms: all terms for the DragonFly license above plus the following:
37 *
38 * 4. All advertising materials mentioning features or use of this software
39 * must display the following acknowledgement:
40 *
41 * This product includes software developed by Jeffrey M. Hsu
42 * for the DragonFly Project.
43 *
44 * This requirement may be waived with permission from Jeffrey Hsu.
45 * Permission will be granted to any DragonFly user for free.
46 * This requirement will sunset and may be removed on Jan 31, 2006,
47 * after which the standard DragonFly license (as shown above) will
48 * apply.
49 */
50
984263bc
MD
51/*
52 * Copyright (c) 1988, 1991, 1993
53 * The Regents of the University of California. All rights reserved.
54 *
55 * Redistribution and use in source and binary forms, with or without
56 * modification, are permitted provided that the following conditions
57 * are met:
58 * 1. Redistributions of source code must retain the above copyright
59 * notice, this list of conditions and the following disclaimer.
60 * 2. Redistributions in binary form must reproduce the above copyright
61 * notice, this list of conditions and the following disclaimer in the
62 * documentation and/or other materials provided with the distribution.
63 * 3. All advertising materials mentioning features or use of this software
64 * must display the following acknowledgement:
65 * This product includes software developed by the University of
66 * California, Berkeley and its contributors.
67 * 4. Neither the name of the University nor the names of its contributors
68 * may be used to endorse or promote products derived from this software
69 * without specific prior written permission.
70 *
71 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
72 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
73 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
74 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
75 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
76 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
77 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
78 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
79 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
80 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
81 * SUCH DAMAGE.
82 *
83 * @(#)rtsock.c 8.7 (Berkeley) 10/12/95
84 * $FreeBSD: src/sys/net/rtsock.c,v 1.44.2.11 2002/12/04 14:05:41 ru Exp $
9c095379 85 * $DragonFly: src/sys/net/rtsock.c,v 1.26 2005/05/25 01:44:16 dillon Exp $
984263bc
MD
86 */
87
984263bc
MD
88#include <sys/param.h>
89#include <sys/systm.h>
90#include <sys/kernel.h>
91#include <sys/sysctl.h>
92#include <sys/proc.h>
93#include <sys/malloc.h>
94#include <sys/mbuf.h>
47e78ae8 95#include <sys/protosw.h>
984263bc
MD
96#include <sys/socket.h>
97#include <sys/socketvar.h>
98#include <sys/domain.h>
984263bc 99
deffea2e
JS
100#include <machine/stdarg.h>
101
984263bc
MD
102#include <net/if.h>
103#include <net/route.h>
104#include <net/raw_cb.h>
105
106MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables");
107
f23061d4
JH
108static struct route_cb {
109 int ip_count;
110 int ip6_count;
111 int ipx_count;
112 int ns_count;
113 int any_count;
114} route_cb;
115
590b8cd4 116static const struct sockaddr route_src = { 2, PF_ROUTE, };
984263bc
MD
117
118struct walkarg {
119 int w_tmemsize;
120 int w_op, w_arg;
8e63efec 121 void *w_tmem;
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MD
122 struct sysctl_req *w_req;
123};
124
125static struct mbuf *
590b8cd4
JH
126 rt_msg_mbuf (int, struct rt_addrinfo *);
127static void rt_msg_buffer (int, struct rt_addrinfo *, void *buf, int len);
128static int rt_msgsize (int type, struct rt_addrinfo *rtinfo);
ef87f48d 129static int rt_xaddrs (char *, char *, struct rt_addrinfo *);
158abb01
RG
130static int sysctl_dumpentry (struct radix_node *rn, void *vw);
131static int sysctl_iflist (int af, struct walkarg *w);
deffea2e 132static int route_output(struct mbuf *, struct socket *, ...);
47e78ae8 133static void rt_setmetrics (u_long, struct rt_metrics *,
f23061d4 134 struct rt_metrics *);
984263bc 135
984263bc
MD
136/*
137 * It really doesn't make any sense at all for this code to share much
138 * with raw_usrreq.c, since its functionality is so restricted. XXX
139 */
140static int
141rts_abort(struct socket *so)
142{
143 int s, error;
f23061d4 144
984263bc
MD
145 s = splnet();
146 error = raw_usrreqs.pru_abort(so);
147 splx(s);
148 return error;
149}
150
151/* pru_accept is EOPNOTSUPP */
152
153static int
e4700d00 154rts_attach(struct socket *so, int proto, struct pru_attach_info *ai)
984263bc
MD
155{
156 struct rawcb *rp;
157 int s, error;
158
ef87f48d 159 if (sotorawcb(so) != NULL)
984263bc 160 return EISCONN; /* XXX panic? */
f23061d4 161
590b8cd4 162 rp = malloc(sizeof *rp, M_PCB, M_WAITOK | M_ZERO);
ef87f48d 163 if (rp == NULL)
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MD
164 return ENOBUFS;
165
166 /*
167 * The splnet() is necessary to block protocols from sending
168 * error notifications (like RTM_REDIRECT or RTM_LOSING) while
169 * this PCB is extant but incompletely initialized.
170 * Probably we should try to do more of this work beforehand and
171 * eliminate the spl.
172 */
173 s = splnet();
ef87f48d 174 so->so_pcb = rp;
e4700d00 175 error = raw_attach(so, proto, ai->sb_rlimit);
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MD
176 rp = sotorawcb(so);
177 if (error) {
178 splx(s);
179 free(rp, M_PCB);
180 return error;
181 }
182 switch(rp->rcb_proto.sp_protocol) {
183 case AF_INET:
184 route_cb.ip_count++;
185 break;
186 case AF_INET6:
187 route_cb.ip6_count++;
188 break;
189 case AF_IPX:
190 route_cb.ipx_count++;
191 break;
192 case AF_NS:
193 route_cb.ns_count++;
194 break;
195 }
196 rp->rcb_faddr = &route_src;
197 route_cb.any_count++;
198 soisconnected(so);
199 so->so_options |= SO_USELOOPBACK;
200 splx(s);
201 return 0;
202}
203
204static int
dadab5e9 205rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
984263bc
MD
206{
207 int s, error;
f23061d4 208
984263bc 209 s = splnet();
dadab5e9 210 error = raw_usrreqs.pru_bind(so, nam, td); /* xxx just EINVAL */
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MD
211 splx(s);
212 return error;
213}
214
215static int
dadab5e9 216rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
984263bc
MD
217{
218 int s, error;
f23061d4 219
984263bc 220 s = splnet();
dadab5e9 221 error = raw_usrreqs.pru_connect(so, nam, td); /* XXX just EINVAL */
984263bc
MD
222 splx(s);
223 return error;
224}
225
226/* pru_connect2 is EOPNOTSUPP */
227/* pru_control is EOPNOTSUPP */
228
229static int
230rts_detach(struct socket *so)
231{
232 struct rawcb *rp = sotorawcb(so);
233 int s, error;
234
235 s = splnet();
ef87f48d 236 if (rp != NULL) {
984263bc
MD
237 switch(rp->rcb_proto.sp_protocol) {
238 case AF_INET:
239 route_cb.ip_count--;
240 break;
241 case AF_INET6:
242 route_cb.ip6_count--;
243 break;
244 case AF_IPX:
245 route_cb.ipx_count--;
246 break;
247 case AF_NS:
248 route_cb.ns_count--;
249 break;
250 }
251 route_cb.any_count--;
252 }
253 error = raw_usrreqs.pru_detach(so);
254 splx(s);
255 return error;
256}
257
258static int
259rts_disconnect(struct socket *so)
260{
261 int s, error;
f23061d4 262
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MD
263 s = splnet();
264 error = raw_usrreqs.pru_disconnect(so);
265 splx(s);
266 return error;
267}
268
269/* pru_listen is EOPNOTSUPP */
270
271static int
272rts_peeraddr(struct socket *so, struct sockaddr **nam)
273{
274 int s, error;
f23061d4 275
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MD
276 s = splnet();
277 error = raw_usrreqs.pru_peeraddr(so, nam);
278 splx(s);
279 return error;
280}
281
282/* pru_rcvd is EOPNOTSUPP */
283/* pru_rcvoob is EOPNOTSUPP */
284
285static int
286rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
dadab5e9 287 struct mbuf *control, struct thread *td)
984263bc
MD
288{
289 int s, error;
f23061d4 290
984263bc 291 s = splnet();
dadab5e9 292 error = raw_usrreqs.pru_send(so, flags, m, nam, control, td);
984263bc
MD
293 splx(s);
294 return error;
295}
296
297/* pru_sense is null */
298
299static int
300rts_shutdown(struct socket *so)
301{
302 int s, error;
f23061d4 303
984263bc
MD
304 s = splnet();
305 error = raw_usrreqs.pru_shutdown(so);
306 splx(s);
307 return error;
308}
309
310static int
311rts_sockaddr(struct socket *so, struct sockaddr **nam)
312{
313 int s, error;
f23061d4 314
984263bc
MD
315 s = splnet();
316 error = raw_usrreqs.pru_sockaddr(so, nam);
317 splx(s);
318 return error;
319}
320
321static struct pr_usrreqs route_usrreqs = {
322 rts_abort, pru_accept_notsupp, rts_attach, rts_bind, rts_connect,
323 pru_connect2_notsupp, pru_control_notsupp, rts_detach, rts_disconnect,
324 pru_listen_notsupp, rts_peeraddr, pru_rcvd_notsupp, pru_rcvoob_notsupp,
325 rts_send, pru_sense_null, rts_shutdown, rts_sockaddr,
326 sosend, soreceive, sopoll
327};
328
590b8cd4
JH
329static __inline sa_family_t
330familyof(struct sockaddr *sa)
331{
332 return (sa != NULL ? sa->sa_family : 0);
333}
334
335static void
336rts_input(struct mbuf *m, sa_family_t family)
337{
338 static const struct sockaddr route_dst = { 2, PF_ROUTE, };
339 struct sockproto route_proto = { PF_ROUTE, family };
340
341 raw_input(m, &route_proto, &route_src, &route_dst);
342}
343
344static void *
345reallocbuf(void *ptr, size_t len, size_t olen)
346{
347 void *newptr;
348
349 newptr = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
350 if (newptr == NULL)
351 return NULL;
352 bcopy(ptr, newptr, olen);
353 free(ptr, M_RTABLE);
354 return (newptr);
355}
356
8e63efec
JH
357/*
358 * Internal helper routine for route_output().
359 */
590b8cd4
JH
360static int
361fillrtmsg(struct rt_msghdr **prtm, struct rtentry *rt,
362 struct rt_addrinfo *rtinfo)
363{
364 int msglen;
365 struct rt_msghdr *rtm = *prtm;
366
367 /* Fill in rt_addrinfo for call to rt_msg_buffer(). */
368 rtinfo->rti_dst = rt_key(rt);
369 rtinfo->rti_gateway = rt->rt_gateway;
370 rtinfo->rti_netmask = rt_mask(rt); /* might be NULL */
371 rtinfo->rti_genmask = rt->rt_genmask; /* might be NULL */
372 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
373 if (rt->rt_ifp != NULL) {
374 rtinfo->rti_ifpaddr =
375 TAILQ_FIRST(&rt->rt_ifp->if_addrhead)->ifa_addr;
376 rtinfo->rti_ifaaddr = rt->rt_ifa->ifa_addr;
377 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
378 rtinfo->rti_bcastaddr = rt->rt_ifa->ifa_dstaddr;
379 rtm->rtm_index = rt->rt_ifp->if_index;
380 } else {
381 rtinfo->rti_ifpaddr = NULL;
382 rtinfo->rti_ifaaddr = NULL;
383 }
384 }
385
386 msglen = rt_msgsize(rtm->rtm_type, rtinfo);
387 if (rtm->rtm_msglen < msglen) {
388 rtm = reallocbuf(rtm, msglen, rtm->rtm_msglen);
389 if (rtm == NULL)
390 return (ENOBUFS);
391 *prtm = rtm;
392 }
393 rt_msg_buffer(rtm->rtm_type, rtinfo, rtm, msglen);
394
395 rtm->rtm_flags = rt->rt_flags;
396 rtm->rtm_rmx = rt->rt_rmx;
397 rtm->rtm_addrs = rtinfo->rti_addrs;
398
399 return (0);
400}
401
984263bc
MD
402/*ARGSUSED*/
403static int
deffea2e 404route_output(struct mbuf *m, struct socket *so, ...)
984263bc 405{
2e9572df
JH
406 struct rt_msghdr *rtm = NULL;
407 struct rtentry *rt = NULL;
408 struct rtentry *saved_nrt = NULL;
984263bc 409 struct radix_node_head *rnh;
2e9572df 410 struct ifaddr *ifa = NULL;
f23061d4 411 struct rawcb *rp = NULL;
deffea2e 412 struct pr_output_info *oi;
590b8cd4 413 struct rt_addrinfo rtinfo;
ef87f48d 414 int len, error = 0;
deffea2e
JS
415 __va_list ap;
416
417 __va_start(ap, so);
418 oi = __va_arg(ap, struct pr_output_info *);
419 __va_end(ap);
984263bc 420
ef87f48d 421#define gotoerr(e) { error = e; goto flush;}
590b8cd4
JH
422
423 if (m == NULL ||
424 (m->m_len < sizeof(long) &&
425 (m = m_pullup(m, sizeof(long))) == NULL))
984263bc 426 return (ENOBUFS);
ef87f48d 427 if (!(m->m_flags & M_PKTHDR))
984263bc
MD
428 panic("route_output");
429 len = m->m_pkthdr.len;
590b8cd4 430 if (len < sizeof(struct rt_msghdr) ||
984263bc 431 len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
590b8cd4 432 rtinfo.rti_dst = NULL;
ef87f48d 433 gotoerr(EINVAL);
984263bc 434 }
590b8cd4 435 rtm = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
ef87f48d 436 if (rtm == NULL) {
590b8cd4 437 rtinfo.rti_dst = NULL;
ef87f48d 438 gotoerr(ENOBUFS);
984263bc
MD
439 }
440 m_copydata(m, 0, len, (caddr_t)rtm);
441 if (rtm->rtm_version != RTM_VERSION) {
590b8cd4 442 rtinfo.rti_dst = NULL;
ef87f48d 443 gotoerr(EPROTONOSUPPORT);
984263bc 444 }
47e78ae8 445 rtm->rtm_pid = oi->p_pid;
590b8cd4
JH
446 bzero(&rtinfo, sizeof(struct rt_addrinfo));
447 rtinfo.rti_addrs = rtm->rtm_addrs;
448 if (rt_xaddrs((char *)(rtm + 1), (char *)rtm + len, &rtinfo) != 0) {
449 rtinfo.rti_dst = NULL;
ef87f48d 450 gotoerr(EINVAL);
984263bc 451 }
590b8cd4
JH
452 rtinfo.rti_flags = rtm->rtm_flags;
453 if (rtinfo.rti_dst == NULL || rtinfo.rti_dst->sa_family >= AF_MAX ||
454 (rtinfo.rti_gateway && rtinfo.rti_gateway->sa_family >= AF_MAX))
ef87f48d
JH
455 gotoerr(EINVAL);
456
590b8cd4
JH
457 if (rtinfo.rti_genmask != NULL) {
458 struct radix_node *n;
ef87f48d 459
590b8cd4
JH
460#define clen(s) (*(u_char *)(s))
461 n = rn_addmask((char *)rtinfo.rti_genmask, TRUE, 1);
462 if (n != NULL &&
463 rtinfo.rti_genmask->sa_len >= clen(n->rn_key) &&
464 bcmp((char *)rtinfo.rti_genmask + 1,
465 (char *)n->rn_key + 1, clen(n->rn_key) - 1) == 0)
466 rtinfo.rti_genmask = (struct sockaddr *)n->rn_key;
984263bc 467 else
ef87f48d 468 gotoerr(ENOBUFS);
984263bc
MD
469 }
470
471 /*
472 * Verify that the caller has the appropriate privilege; RTM_GET
473 * is the only operation the non-superuser is allowed.
474 */
dadab5e9 475 if (rtm->rtm_type != RTM_GET && suser_cred(so->so_cred, 0) != 0)
ef87f48d 476 gotoerr(EPERM);
984263bc
MD
477
478 switch (rtm->rtm_type) {
984263bc 479 case RTM_ADD:
590b8cd4 480 if (rtinfo.rti_gateway == NULL)
ef87f48d 481 gotoerr(EINVAL);
590b8cd4 482 error = rtrequest1(RTM_ADD, &rtinfo, &saved_nrt);
ef87f48d 483 if (error == 0 && saved_nrt != NULL) {
590b8cd4
JH
484 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
485 &saved_nrt->rt_rmx);
984263bc
MD
486 saved_nrt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
487 saved_nrt->rt_rmx.rmx_locks |=
590b8cd4
JH
488 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
489 --saved_nrt->rt_refcnt;
490 saved_nrt->rt_genmask = rtinfo.rti_genmask;
984263bc
MD
491 }
492 break;
984263bc 493 case RTM_DELETE:
590b8cd4 494 error = rtrequest1(RTM_DELETE, &rtinfo, &saved_nrt);
984263bc
MD
495 if (error == 0) {
496 if ((rt = saved_nrt))
497 rt->rt_refcnt++;
590b8cd4
JH
498 if (fillrtmsg(&rtm, rt, &rtinfo) != 0)
499 gotoerr(ENOBUFS);
984263bc
MD
500 }
501 break;
984263bc
MD
502 case RTM_GET:
503 case RTM_CHANGE:
504 case RTM_LOCK:
590b8cd4 505 if ((rnh = rt_tables[rtinfo.rti_dst->sa_family]) == NULL)
ef87f48d 506 gotoerr(EAFNOSUPPORT);
590b8cd4
JH
507 rt = (struct rtentry *)
508 rnh->rnh_lookup((char *)rtinfo.rti_dst,
509 (char *)rtinfo.rti_netmask, rnh);
510 if (rt == NULL)
ef87f48d 511 gotoerr(ESRCH);
590b8cd4 512 rt->rt_refcnt++;
984263bc 513
590b8cd4 514 switch(rtm->rtm_type) {
984263bc 515 case RTM_GET:
590b8cd4
JH
516 if (fillrtmsg(&rtm, rt, &rtinfo) != 0)
517 gotoerr(ENOBUFS);
984263bc 518 break;
984263bc 519 case RTM_CHANGE:
ef87f48d
JH
520 /*
521 * new gateway could require new ifaddr, ifp;
522 * flags may also be different; ifp may be specified
523 * by ll sockaddr when protocol address is ambiguous
524 */
525 if (((rt->rt_flags & RTF_GATEWAY) &&
590b8cd4
JH
526 rtinfo.rti_gateway != NULL) ||
527 rtinfo.rti_ifpaddr != NULL ||
528 (rtinfo.rti_ifaaddr != NULL &&
529 sa_equal(rtinfo.rti_ifaaddr,
530 rt->rt_ifa->ifa_addr))) {
531 error = rt_getifa(&rtinfo);
532 if (error != 0)
ef87f48d 533 gotoerr(error);
984263bc 534 }
590b8cd4
JH
535 if (rtinfo.rti_gateway != NULL) {
536 error = rt_setgate(rt, rt_key(rt),
537 rtinfo.rti_gateway);
538 if (error != 0)
539 gotoerr(error);
540 }
541 if ((ifa = rtinfo.rti_ifa) != NULL) {
82ed7fc2 542 struct ifaddr *oifa = rt->rt_ifa;
ef87f48d 543
984263bc 544 if (oifa != ifa) {
f23061d4
JH
545 if (oifa && oifa->ifa_rtrequest)
546 oifa->ifa_rtrequest(RTM_DELETE,
590b8cd4 547 rt, &rtinfo);
f23061d4 548 IFAFREE(rt->rt_ifa);
f23061d4 549 IFAREF(ifa);
590b8cd4
JH
550 rt->rt_ifa = ifa;
551 rt->rt_ifp = rtinfo.rti_ifp;
984263bc
MD
552 }
553 }
554 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
590b8cd4 555 &rt->rt_rmx);
984263bc 556 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
590b8cd4
JH
557 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &rtinfo);
558 if (rtinfo.rti_genmask != NULL)
559 rt->rt_genmask = rtinfo.rti_genmask;
984263bc
MD
560 /*
561 * Fall into
562 */
563 case RTM_LOCK:
564 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
565 rt->rt_rmx.rmx_locks |=
566 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
567 break;
568 }
984263bc 569
590b8cd4 570 break;
984263bc 571 default:
ef87f48d 572 gotoerr(EOPNOTSUPP);
984263bc
MD
573 }
574
575flush:
590b8cd4
JH
576 if (rtm != NULL) {
577 if (error != 0)
984263bc
MD
578 rtm->rtm_errno = error;
579 else
580 rtm->rtm_flags |= RTF_DONE;
581 }
590b8cd4 582 if (rt != NULL)
984263bc 583 rtfree(rt);
984263bc
MD
584 /*
585 * Check to see if we don't want our own messages.
586 */
ef87f48d 587 if (!(so->so_options & SO_USELOOPBACK)) {
984263bc 588 if (route_cb.any_count <= 1) {
590b8cd4
JH
589 if (rtm != NULL)
590 free(rtm, M_RTABLE);
984263bc
MD
591 m_freem(m);
592 return (error);
593 }
594 /* There is another listener, so construct message */
595 rp = sotorawcb(so);
596 }
590b8cd4 597 if (rtm != NULL) {
984263bc
MD
598 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
599 if (m->m_pkthdr.len < rtm->rtm_msglen) {
600 m_freem(m);
601 m = NULL;
602 } else if (m->m_pkthdr.len > rtm->rtm_msglen)
603 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
590b8cd4 604 free(rtm, M_RTABLE);
984263bc 605 }
ef87f48d 606 if (rp != NULL)
984263bc 607 rp->rcb_proto.sp_family = 0; /* Avoid us */
ef87f48d 608 if (m != NULL)
590b8cd4 609 rts_input(m, familyof(rtinfo.rti_dst));
ef87f48d 610 if (rp != NULL)
984263bc 611 rp->rcb_proto.sp_family = PF_ROUTE;
984263bc
MD
612 return (error);
613}
614
615static void
ef87f48d 616rt_setmetrics(u_long which, struct rt_metrics *in, struct rt_metrics *out)
984263bc 617{
2e9572df
JH
618#define setmetric(flag, elt) if (which & (flag)) out->elt = in->elt;
619 setmetric(RTV_RPIPE, rmx_recvpipe);
620 setmetric(RTV_SPIPE, rmx_sendpipe);
621 setmetric(RTV_SSTHRESH, rmx_ssthresh);
622 setmetric(RTV_RTT, rmx_rtt);
623 setmetric(RTV_RTTVAR, rmx_rttvar);
624 setmetric(RTV_HOPCOUNT, rmx_hopcount);
625 setmetric(RTV_MTU, rmx_mtu);
626 setmetric(RTV_EXPIRE, rmx_expire);
627#undef setmetric
984263bc
MD
628}
629
630#define ROUNDUP(a) \
631 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
984263bc 632
984263bc
MD
633/*
634 * Extract the addresses of the passed sockaddrs.
635 * Do a little sanity checking so as to avoid bad memory references.
636 * This data is derived straight from userland.
637 */
638static int
ef87f48d 639rt_xaddrs(char *cp, char *cplim, struct rt_addrinfo *rtinfo)
984263bc 640{
82ed7fc2
RG
641 struct sockaddr *sa;
642 int i;
984263bc
MD
643
644 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
645 if ((rtinfo->rti_addrs & (1 << i)) == 0)
646 continue;
647 sa = (struct sockaddr *)cp;
648 /*
649 * It won't fit.
650 */
0c3c561c 651 if ((cp + sa->sa_len) > cplim) {
984263bc
MD
652 return (EINVAL);
653 }
654
655 /*
ef87f48d 656 * There are no more... Quit now.
984263bc 657 * If there are more bits, they are in error.
ef87f48d 658 * I've seen this. route(1) can evidently generate these.
984263bc 659 * This causes kernel to core dump.
ef87f48d 660 * For compatibility, if we see this, point to a safe address.
984263bc
MD
661 */
662 if (sa->sa_len == 0) {
590b8cd4
JH
663 static struct sockaddr sa_zero = {
664 sizeof sa_zero, AF_INET,
665 };
666
984263bc
MD
667 rtinfo->rti_info[i] = &sa_zero;
668 return (0); /* should be EINVAL but for compat */
669 }
670
ef87f48d 671 /* Accept the sockaddr. */
984263bc 672 rtinfo->rti_info[i] = sa;
590b8cd4 673 cp += ROUNDUP(sa->sa_len);
984263bc
MD
674 }
675 return (0);
676}
677
590b8cd4
JH
678static int
679rt_msghdrsize(int type)
984263bc 680{
984263bc 681 switch (type) {
984263bc
MD
682 case RTM_DELADDR:
683 case RTM_NEWADDR:
590b8cd4 684 return sizeof(struct ifa_msghdr);
984263bc
MD
685 case RTM_DELMADDR:
686 case RTM_NEWMADDR:
590b8cd4 687 return sizeof(struct ifma_msghdr);
984263bc 688 case RTM_IFINFO:
590b8cd4 689 return sizeof(struct if_msghdr);
984263bc 690 case RTM_IFANNOUNCE:
590b8cd4 691 return sizeof(struct if_announcemsghdr);
984263bc 692 default:
590b8cd4 693 return sizeof(struct rt_msghdr);
984263bc 694 }
590b8cd4
JH
695}
696
697static int
698rt_msgsize(int type, struct rt_addrinfo *rtinfo)
699{
700 int len, i;
701
702 len = rt_msghdrsize(type);
703 for (i = 0; i < RTAX_MAX; i++) {
704 if (rtinfo->rti_info[i] != NULL)
705 len += ROUNDUP(rtinfo->rti_info[i]->sa_len);
984263bc 706 }
590b8cd4
JH
707 len = ALIGN(len);
708 return len;
709}
710
711/*
712 * Build a routing message in a buffer.
713 * Copy the addresses in the rtinfo->rti_info[] sockaddr array
714 * to the end of the buffer after the message header.
715 *
716 * Set the rtinfo->rti_addrs bitmask of addresses present in rtinfo->rti_info[].
717 * This side-effect can be avoided if we reorder the addrs bitmask field in all
718 * the route messages to line up so we can set it here instead of back in the
719 * calling routine.
720 */
721static void
722rt_msg_buffer(int type, struct rt_addrinfo *rtinfo, void *buf, int msglen)
723{
724 struct rt_msghdr *rtm;
725 char *cp;
726 int dlen, i;
727
728 rtm = (struct rt_msghdr *) buf;
729 rtm->rtm_version = RTM_VERSION;
730 rtm->rtm_type = type;
731 rtm->rtm_msglen = msglen;
732
733 cp = (char *)buf + rt_msghdrsize(type);
734 rtinfo->rti_addrs = 0;
984263bc 735 for (i = 0; i < RTAX_MAX; i++) {
590b8cd4
JH
736 struct sockaddr *sa;
737
984263bc
MD
738 if ((sa = rtinfo->rti_info[i]) == NULL)
739 continue;
740 rtinfo->rti_addrs |= (1 << i);
741 dlen = ROUNDUP(sa->sa_len);
590b8cd4
JH
742 bcopy(sa, cp, dlen);
743 cp += dlen;
984263bc 744 }
984263bc
MD
745}
746
590b8cd4
JH
747/*
748 * Build a routing message in a mbuf chain.
749 * Copy the addresses in the rtinfo->rti_info[] sockaddr array
750 * to the end of the mbuf after the message header.
751 *
752 * Set the rtinfo->rti_addrs bitmask of addresses present in rtinfo->rti_info[].
753 * This side-effect can be avoided if we reorder the addrs bitmask field in all
754 * the route messages to line up so we can set it here instead of back in the
755 * calling routine.
756 */
757static struct mbuf *
758rt_msg_mbuf(int type, struct rt_addrinfo *rtinfo)
984263bc 759{
590b8cd4
JH
760 struct mbuf *m;
761 struct rt_msghdr *rtm;
762 int hlen, len;
82ed7fc2 763 int i;
984263bc 764
590b8cd4
JH
765 hlen = rt_msghdrsize(type);
766 KASSERT(hlen <= MCLBYTES, ("rt_msg_mbuf: hlen %d doesn't fit", hlen));
984263bc 767
590b8cd4
JH
768 m = m_gethdr(MB_DONTWAIT, MT_DATA);
769 if (m == NULL)
770 return (NULL);
771 if (hlen > MHLEN) {
772 MCLGET(m, MB_DONTWAIT);
773 if (!(m->m_flags & M_EXT)) {
774 m_free(m);
775 return (NULL);
776 }
984263bc 777 }
590b8cd4
JH
778 m->m_pkthdr.len = m->m_len = hlen;
779 m->m_pkthdr.rcvif = NULL;
780 rtinfo->rti_addrs = 0;
781 len = hlen;
984263bc 782 for (i = 0; i < RTAX_MAX; i++) {
82ed7fc2 783 struct sockaddr *sa;
590b8cd4 784 int dlen;
984263bc 785
ef87f48d 786 if ((sa = rtinfo->rti_info[i]) == NULL)
984263bc
MD
787 continue;
788 rtinfo->rti_addrs |= (1 << i);
789 dlen = ROUNDUP(sa->sa_len);
590b8cd4 790 m_copyback(m, len, dlen, (caddr_t)sa); /* can grow mbuf chain */
984263bc
MD
791 len += dlen;
792 }
590b8cd4
JH
793 if (m->m_pkthdr.len != len) { /* one of the m_copyback() calls failed */
794 m_freem(m);
795 return (NULL);
984263bc 796 }
590b8cd4
JH
797 rtm = mtod(m, struct rt_msghdr *);
798 bzero(rtm, hlen);
799 rtm->rtm_msglen = len;
800 rtm->rtm_version = RTM_VERSION;
801 rtm->rtm_type = type;
802 return (m);
984263bc
MD
803}
804
805/*
806 * This routine is called to generate a message from the routing
f23061d4 807 * socket indicating that a redirect has occurred, a routing lookup
984263bc
MD
808 * has failed, or that a protocol has detected timeouts to a particular
809 * destination.
810 */
811void
f23061d4 812rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error)
984263bc 813{
0c3c561c 814 struct sockaddr *dst = rtinfo->rti_info[RTAX_DST];
82ed7fc2
RG
815 struct rt_msghdr *rtm;
816 struct mbuf *m;
984263bc
MD
817
818 if (route_cb.any_count == 0)
819 return;
590b8cd4 820 m = rt_msg_mbuf(type, rtinfo);
ef87f48d 821 if (m == NULL)
984263bc
MD
822 return;
823 rtm = mtod(m, struct rt_msghdr *);
824 rtm->rtm_flags = RTF_DONE | flags;
825 rtm->rtm_errno = error;
826 rtm->rtm_addrs = rtinfo->rti_addrs;
590b8cd4 827 rts_input(m, familyof(dst));
984263bc
MD
828}
829
f3ed2586
JH
830void
831rt_dstmsg(int type, struct sockaddr *dst, int error)
832{
833 struct rt_msghdr *rtm;
834 struct rt_addrinfo addrs;
835 struct mbuf *m;
836
837 if (route_cb.any_count == 0)
838 return;
839 bzero(&addrs, sizeof(struct rt_addrinfo));
840 addrs.rti_info[RTAX_DST] = dst;
590b8cd4 841 m = rt_msg_mbuf(type, &addrs);
f3ed2586
JH
842 if (m == NULL)
843 return;
844 rtm = mtod(m, struct rt_msghdr *);
845 rtm->rtm_flags = RTF_DONE;
846 rtm->rtm_errno = error;
847 rtm->rtm_addrs = addrs.rti_addrs;
590b8cd4 848 rts_input(m, familyof(dst));
f3ed2586
JH
849}
850
984263bc
MD
851/*
852 * This routine is called to generate a message from the routing
853 * socket indicating that the status of a network interface has changed.
854 */
855void
0c3c561c 856rt_ifmsg(struct ifnet *ifp)
984263bc 857{
82ed7fc2 858 struct if_msghdr *ifm;
984263bc 859 struct mbuf *m;
590b8cd4 860 struct rt_addrinfo rtinfo;
984263bc
MD
861
862 if (route_cb.any_count == 0)
863 return;
590b8cd4
JH
864 bzero(&rtinfo, sizeof(struct rt_addrinfo));
865 m = rt_msg_mbuf(RTM_IFINFO, &rtinfo);
ef87f48d 866 if (m == NULL)
984263bc
MD
867 return;
868 ifm = mtod(m, struct if_msghdr *);
869 ifm->ifm_index = ifp->if_index;
9c095379 870 ifm->ifm_flags = ifp->if_flags;
984263bc 871 ifm->ifm_data = ifp->if_data;
590b8cd4
JH
872 ifm->ifm_addrs = 0;
873 rts_input(m, 0);
984263bc
MD
874}
875
372316d9
JH
876static void
877rt_ifamsg(int cmd, struct ifaddr *ifa)
878{
879 struct ifa_msghdr *ifam;
590b8cd4 880 struct rt_addrinfo rtinfo;
372316d9 881 struct mbuf *m;
372316d9
JH
882 struct ifnet *ifp = ifa->ifa_ifp;
883
590b8cd4
JH
884 bzero(&rtinfo, sizeof(struct rt_addrinfo));
885 rtinfo.rti_ifaaddr = ifa->ifa_addr;
886 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
887 rtinfo.rti_netmask = ifa->ifa_netmask;
888 rtinfo.rti_bcastaddr = ifa->ifa_dstaddr;
f23061d4 889
590b8cd4 890 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 891 if (m == NULL)
372316d9 892 return;
f23061d4 893
372316d9
JH
894 ifam = mtod(m, struct ifa_msghdr *);
895 ifam->ifam_index = ifp->if_index;
896 ifam->ifam_metric = ifa->ifa_metric;
897 ifam->ifam_flags = ifa->ifa_flags;
590b8cd4 898 ifam->ifam_addrs = rtinfo.rti_addrs;
f23061d4 899
590b8cd4 900 rts_input(m, familyof(ifa->ifa_addr));
372316d9
JH
901}
902
f3ed2586
JH
903void
904rt_rtmsg(int cmd, struct rtentry *rt, struct ifnet *ifp, int error)
372316d9
JH
905{
906 struct rt_msghdr *rtm;
590b8cd4 907 struct rt_addrinfo rtinfo;
372316d9 908 struct mbuf *m;
f3ed2586 909 struct sockaddr *dst;
372316d9
JH
910
911 if (rt == NULL)
912 return;
f23061d4 913
590b8cd4
JH
914 bzero(&rtinfo, sizeof(struct rt_addrinfo));
915 rtinfo.rti_dst = dst = rt_key(rt);
916 rtinfo.rti_gateway = rt->rt_gateway;
917 rtinfo.rti_netmask = rt_mask(rt);
f3ed2586 918 if (ifp != NULL)
590b8cd4
JH
919 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
920 rtinfo.rti_ifaaddr = rt->rt_ifa->ifa_addr;
f23061d4 921
590b8cd4 922 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 923 if (m == NULL)
372316d9 924 return;
f23061d4 925
372316d9 926 rtm = mtod(m, struct rt_msghdr *);
f3ed2586
JH
927 if (ifp != NULL)
928 rtm->rtm_index = ifp->if_index;
372316d9
JH
929 rtm->rtm_flags |= rt->rt_flags;
930 rtm->rtm_errno = error;
590b8cd4 931 rtm->rtm_addrs = rtinfo.rti_addrs;
f23061d4 932
590b8cd4 933 rts_input(m, familyof(dst));
372316d9
JH
934}
935
984263bc
MD
936/*
937 * This is called to generate messages from the routing socket
938 * indicating a network interface has had addresses associated with it.
939 * if we ever reverse the logic and replace messages TO the routing
940 * socket indicate a request to configure interfaces, then it will
941 * be unnecessary as the routing socket will automatically generate
942 * copies of it.
943 */
944void
0c3c561c 945rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
984263bc 946{
984263bc
MD
947 if (route_cb.any_count == 0)
948 return;
984263bc 949
372316d9
JH
950 if (cmd == RTM_ADD) {
951 rt_ifamsg(RTM_NEWADDR, ifa);
f3ed2586 952 rt_rtmsg(RTM_ADD, rt, ifa->ifa_ifp, error);
372316d9
JH
953 } else {
954 KASSERT((cmd == RTM_DELETE), ("unknown cmd %d", cmd));
f3ed2586 955 rt_rtmsg(RTM_DELETE, rt, ifa->ifa_ifp, error);
372316d9 956 rt_ifamsg(RTM_DELADDR, ifa);
984263bc
MD
957 }
958}
959
960/*
961 * This is the analogue to the rt_newaddrmsg which performs the same
962 * function but for multicast group memberhips. This is easier since
963 * there is no route state to worry about.
964 */
965void
0c3c561c 966rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma)
984263bc 967{
590b8cd4 968 struct rt_addrinfo rtinfo;
ef87f48d 969 struct mbuf *m = NULL;
984263bc
MD
970 struct ifnet *ifp = ifma->ifma_ifp;
971 struct ifma_msghdr *ifmam;
972
973 if (route_cb.any_count == 0)
974 return;
975
590b8cd4
JH
976 bzero(&rtinfo, sizeof(struct rt_addrinfo));
977 rtinfo.rti_ifaaddr = ifma->ifma_addr;
1782116d 978 if (ifp != NULL && !TAILQ_EMPTY(&ifp->if_addrhead))
590b8cd4 979 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
984263bc
MD
980 /*
981 * If a link-layer address is present, present it as a ``gateway''
982 * (similarly to how ARP entries, e.g., are presented).
983 */
590b8cd4 984 rtinfo.rti_gateway = ifma->ifma_lladdr;
f23061d4 985
590b8cd4 986 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 987 if (m == NULL)
984263bc 988 return;
f23061d4 989
984263bc
MD
990 ifmam = mtod(m, struct ifma_msghdr *);
991 ifmam->ifmam_index = ifp->if_index;
590b8cd4 992 ifmam->ifmam_addrs = rtinfo.rti_addrs;
f23061d4 993
590b8cd4 994 rts_input(m, familyof(ifma->ifma_addr));
984263bc
MD
995}
996
997/*
998 * This is called to generate routing socket messages indicating
999 * network interface arrival and departure.
1000 */
1001void
590b8cd4 1002rt_ifannouncemsg(struct ifnet *ifp, int what)
984263bc 1003{
590b8cd4 1004 struct rt_addrinfo addrinfo;
984263bc 1005 struct mbuf *m;
590b8cd4 1006 struct if_announcemsghdr *ifan;
984263bc
MD
1007
1008 if (route_cb.any_count == 0)
1009 return;
f23061d4 1010
590b8cd4
JH
1011 bzero(&addrinfo, sizeof addrinfo);
1012 m = rt_msg_mbuf(RTM_IFANNOUNCE, &addrinfo);
984263bc
MD
1013 if (m == NULL)
1014 return;
f23061d4 1015
984263bc
MD
1016 ifan = mtod(m, struct if_announcemsghdr *);
1017 ifan->ifan_index = ifp->if_index;
5fe66e68 1018 strlcpy(ifan->ifan_name, ifp->if_xname, sizeof ifan->ifan_name);
984263bc 1019 ifan->ifan_what = what;
f23061d4 1020
590b8cd4
JH
1021 rts_input(m, 0);
1022}
f23061d4 1023
590b8cd4
JH
1024static int
1025resizewalkarg(struct walkarg *w, int len)
1026{
1027 void *newptr;
1028
1029 newptr = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
1030 if (newptr == NULL)
1031 return (ENOMEM);
1032 if (w->w_tmem != NULL)
1033 free(w->w_tmem, M_RTABLE);
1034 w->w_tmem = newptr;
1035 w->w_tmemsize = len;
1036 return (0);
1037}
984263bc
MD
1038
1039/*
1040 * This is used in dumping the kernel table via sysctl().
1041 */
1042int
590b8cd4 1043sysctl_dumpentry(struct radix_node *rn, void *vw)
984263bc 1044{
82ed7fc2
RG
1045 struct walkarg *w = vw;
1046 struct rtentry *rt = (struct rtentry *)rn;
590b8cd4
JH
1047 struct rt_addrinfo rtinfo;
1048 int error, msglen;
984263bc
MD
1049
1050 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
1051 return 0;
f23061d4 1052
590b8cd4
JH
1053 bzero(&rtinfo, sizeof(struct rt_addrinfo));
1054 rtinfo.rti_dst = rt_key(rt);
1055 rtinfo.rti_gateway = rt->rt_gateway;
1056 rtinfo.rti_netmask = rt_mask(rt);
1057 rtinfo.rti_genmask = rt->rt_genmask;
ef87f48d 1058 if (rt->rt_ifp != NULL) {
590b8cd4 1059 rtinfo.rti_ifpaddr =
ef87f48d 1060 TAILQ_FIRST(&rt->rt_ifp->if_addrhead)->ifa_addr;
590b8cd4 1061 rtinfo.rti_ifaaddr = rt->rt_ifa->ifa_addr;
984263bc 1062 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
590b8cd4 1063 rtinfo.rti_bcastaddr = rt->rt_ifa->ifa_dstaddr;
984263bc 1064 }
590b8cd4
JH
1065 msglen = rt_msgsize(RTM_GET, &rtinfo);
1066 if (w->w_tmemsize < msglen && resizewalkarg(w, msglen) != 0)
1067 return (ENOMEM);
1068 rt_msg_buffer(RTM_GET, &rtinfo, w->w_tmem, msglen);
1069 if (w->w_req != NULL) {
8e63efec 1070 struct rt_msghdr *rtm = w->w_tmem;
984263bc
MD
1071
1072 rtm->rtm_flags = rt->rt_flags;
1073 rtm->rtm_use = rt->rt_use;
1074 rtm->rtm_rmx = rt->rt_rmx;
1075 rtm->rtm_index = rt->rt_ifp->if_index;
1076 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
590b8cd4
JH
1077 rtm->rtm_addrs = rtinfo.rti_addrs;
1078 error = SYSCTL_OUT(w->w_req, rtm, msglen);
984263bc
MD
1079 return (error);
1080 }
590b8cd4 1081 return (0);
984263bc
MD
1082}
1083
590b8cd4
JH
1084static int
1085sysctl_iflist(int af, struct walkarg *w)
984263bc 1086{
82ed7fc2
RG
1087 struct ifnet *ifp;
1088 struct ifaddr *ifa;
590b8cd4
JH
1089 struct rt_addrinfo rtinfo;
1090 int msglen, error;
984263bc 1091
590b8cd4 1092 bzero(&rtinfo, sizeof(struct rt_addrinfo));
984263bc
MD
1093 TAILQ_FOREACH(ifp, &ifnet, if_link) {
1094 if (w->w_arg && w->w_arg != ifp->if_index)
1095 continue;
1096 ifa = TAILQ_FIRST(&ifp->if_addrhead);
590b8cd4
JH
1097 rtinfo.rti_ifpaddr = ifa->ifa_addr;
1098 msglen = rt_msgsize(RTM_IFINFO, &rtinfo);
1099 if (w->w_tmemsize < msglen && resizewalkarg(w, msglen) != 0)
1100 return (ENOMEM);
1101 rt_msg_buffer(RTM_IFINFO, &rtinfo, w->w_tmem, msglen);
1102 rtinfo.rti_ifpaddr = NULL;
ef87f48d 1103 if (w->w_req != NULL && w->w_tmem != NULL) {
8e63efec 1104 struct if_msghdr *ifm = w->w_tmem;
984263bc 1105
984263bc 1106 ifm->ifm_index = ifp->if_index;
9c095379 1107 ifm->ifm_flags = ifp->if_flags;
984263bc 1108 ifm->ifm_data = ifp->if_data;
590b8cd4
JH
1109 ifm->ifm_addrs = rtinfo.rti_addrs;
1110 error = SYSCTL_OUT(w->w_req, ifm, msglen);
984263bc
MD
1111 if (error)
1112 return (error);
1113 }
ef87f48d 1114 while ((ifa = TAILQ_NEXT(ifa, ifa_link)) != NULL) {
984263bc
MD
1115 if (af && af != ifa->ifa_addr->sa_family)
1116 continue;
590b8cd4
JH
1117 if (curproc->p_ucred->cr_prison &&
1118 prison_if(curthread, ifa->ifa_addr))
984263bc 1119 continue;
590b8cd4
JH
1120 rtinfo.rti_ifaaddr = ifa->ifa_addr;
1121 rtinfo.rti_netmask = ifa->ifa_netmask;
1122 rtinfo.rti_bcastaddr = ifa->ifa_dstaddr;
1123 msglen = rt_msgsize(RTM_NEWADDR, &rtinfo);
1124 if (w->w_tmemsize < msglen &&
1125 resizewalkarg(w, msglen) != 0)
1126 return (ENOMEM);
1127 rt_msg_buffer(RTM_NEWADDR, &rtinfo, w->w_tmem, msglen);
1128 if (w->w_req != NULL) {
8e63efec 1129 struct ifa_msghdr *ifam = w->w_tmem;
984263bc 1130
984263bc
MD
1131 ifam->ifam_index = ifa->ifa_ifp->if_index;
1132 ifam->ifam_flags = ifa->ifa_flags;
1133 ifam->ifam_metric = ifa->ifa_metric;
590b8cd4
JH
1134 ifam->ifam_addrs = rtinfo.rti_addrs;
1135 error = SYSCTL_OUT(w->w_req, w->w_tmem, msglen);
984263bc
MD
1136 if (error)
1137 return (error);
1138 }
1139 }
590b8cd4
JH
1140 rtinfo.rti_netmask = NULL;
1141 rtinfo.rti_ifaaddr = NULL;
1142 rtinfo.rti_bcastaddr = NULL;
984263bc
MD
1143 }
1144 return (0);
1145}
1146
1147static int
1148sysctl_rtsock(SYSCTL_HANDLER_ARGS)
1149{
1150 int *name = (int *)arg1;
1151 u_int namelen = arg2;
82ed7fc2 1152 struct radix_node_head *rnh;
984263bc
MD
1153 int i, s, error = EINVAL;
1154 u_char af;
1155 struct walkarg w;
1156
1157 name ++;
1158 namelen--;
1159 if (req->newptr)
1160 return (EPERM);
1161 if (namelen != 3)
1162 return (EINVAL);
1163 af = name[0];
5fe66e68 1164 bzero(&w, sizeof w);
984263bc
MD
1165 w.w_op = name[1];
1166 w.w_arg = name[2];
1167 w.w_req = req;
1168
1169 s = splnet();
1170 switch (w.w_op) {
1171
1172 case NET_RT_DUMP:
1173 case NET_RT_FLAGS:
1174 for (i = 1; i <= AF_MAX; i++)
1175 if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
1176 (error = rnh->rnh_walktree(rnh,
f23061d4 1177 sysctl_dumpentry, &w)))
984263bc
MD
1178 break;
1179 break;
1180
1181 case NET_RT_IFLIST:
1182 error = sysctl_iflist(af, &w);
1183 }
1184 splx(s);
590b8cd4 1185 if (w.w_tmem != NULL)
984263bc
MD
1186 free(w.w_tmem, M_RTABLE);
1187 return (error);
1188}
1189
1190SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, "");
1191
1192/*
1193 * Definitions of protocols supported in the ROUTE domain.
1194 */
1195
1196extern struct domain routedomain; /* or at least forward */
1197
1198static struct protosw routesw[] = {
1199{ SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
1200 0, route_output, raw_ctlinput, 0,
9eeaa8a9 1201 cpu0_soport,
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MD
1202 raw_init, 0, 0, 0,
1203 &route_usrreqs
1204}
1205};
1206
9c70fe43
JH
1207static struct domain routedomain = {
1208 PF_ROUTE, "route", NULL, NULL, NULL,
1209 routesw, &routesw[(sizeof routesw)/(sizeof routesw[0])],
1210};
984263bc
MD
1211
1212DOMAIN_SET(route);