Remove extra 'the'.
[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 $
78812139 85 * $DragonFly: src/sys/net/rtsock.c,v 1.29 2005/07/15 17:54:47 eirikn Exp $
984263bc
MD
86 */
87
78812139
EN
88#include "opt_sctp.h"
89
984263bc
MD
90#include <sys/param.h>
91#include <sys/systm.h>
92#include <sys/kernel.h>
93#include <sys/sysctl.h>
94#include <sys/proc.h>
95#include <sys/malloc.h>
96#include <sys/mbuf.h>
47e78ae8 97#include <sys/protosw.h>
984263bc
MD
98#include <sys/socket.h>
99#include <sys/socketvar.h>
100#include <sys/domain.h>
a49aa710 101#include <sys/thread2.h>
deffea2e 102
984263bc
MD
103#include <net/if.h>
104#include <net/route.h>
105#include <net/raw_cb.h>
106
78812139
EN
107#ifdef SCTP
108extern void sctp_add_ip_address(struct ifaddr *ifa);
109extern void sctp_delete_ip_address(struct ifaddr *ifa);
110#endif /* SCTP */
111
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MD
112MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables");
113
f23061d4
JH
114static struct route_cb {
115 int ip_count;
116 int ip6_count;
117 int ipx_count;
118 int ns_count;
119 int any_count;
120} route_cb;
121
590b8cd4 122static const struct sockaddr route_src = { 2, PF_ROUTE, };
984263bc
MD
123
124struct walkarg {
125 int w_tmemsize;
126 int w_op, w_arg;
8e63efec 127 void *w_tmem;
984263bc
MD
128 struct sysctl_req *w_req;
129};
130
131static struct mbuf *
590b8cd4
JH
132 rt_msg_mbuf (int, struct rt_addrinfo *);
133static void rt_msg_buffer (int, struct rt_addrinfo *, void *buf, int len);
134static int rt_msgsize (int type, struct rt_addrinfo *rtinfo);
ef87f48d 135static int rt_xaddrs (char *, char *, struct rt_addrinfo *);
158abb01
RG
136static int sysctl_dumpentry (struct radix_node *rn, void *vw);
137static int sysctl_iflist (int af, struct walkarg *w);
deffea2e 138static int route_output(struct mbuf *, struct socket *, ...);
47e78ae8 139static void rt_setmetrics (u_long, struct rt_metrics *,
f23061d4 140 struct rt_metrics *);
984263bc 141
984263bc
MD
142/*
143 * It really doesn't make any sense at all for this code to share much
144 * with raw_usrreq.c, since its functionality is so restricted. XXX
145 */
146static int
147rts_abort(struct socket *so)
148{
a49aa710 149 int error;
f23061d4 150
a49aa710 151 crit_enter();
984263bc 152 error = raw_usrreqs.pru_abort(so);
a49aa710 153 crit_exit();
984263bc
MD
154 return error;
155}
156
157/* pru_accept is EOPNOTSUPP */
158
159static int
e4700d00 160rts_attach(struct socket *so, int proto, struct pru_attach_info *ai)
984263bc
MD
161{
162 struct rawcb *rp;
a49aa710 163 int error;
984263bc 164
ef87f48d 165 if (sotorawcb(so) != NULL)
984263bc 166 return EISCONN; /* XXX panic? */
f23061d4 167
590b8cd4 168 rp = malloc(sizeof *rp, M_PCB, M_WAITOK | M_ZERO);
ef87f48d 169 if (rp == NULL)
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MD
170 return ENOBUFS;
171
172 /*
a49aa710 173 * The critical section is necessary to block protocols from sending
984263bc
MD
174 * error notifications (like RTM_REDIRECT or RTM_LOSING) while
175 * this PCB is extant but incompletely initialized.
176 * Probably we should try to do more of this work beforehand and
a49aa710 177 * eliminate the critical section.
984263bc 178 */
a49aa710 179 crit_enter();
ef87f48d 180 so->so_pcb = rp;
e4700d00 181 error = raw_attach(so, proto, ai->sb_rlimit);
984263bc
MD
182 rp = sotorawcb(so);
183 if (error) {
a49aa710 184 crit_exit();
984263bc
MD
185 free(rp, M_PCB);
186 return error;
187 }
188 switch(rp->rcb_proto.sp_protocol) {
189 case AF_INET:
190 route_cb.ip_count++;
191 break;
192 case AF_INET6:
193 route_cb.ip6_count++;
194 break;
195 case AF_IPX:
196 route_cb.ipx_count++;
197 break;
198 case AF_NS:
199 route_cb.ns_count++;
200 break;
201 }
202 rp->rcb_faddr = &route_src;
203 route_cb.any_count++;
204 soisconnected(so);
205 so->so_options |= SO_USELOOPBACK;
a49aa710 206 crit_exit();
984263bc
MD
207 return 0;
208}
209
210static int
dadab5e9 211rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
984263bc 212{
a49aa710 213 int error;
f23061d4 214
a49aa710 215 crit_enter();
dadab5e9 216 error = raw_usrreqs.pru_bind(so, nam, td); /* xxx just EINVAL */
a49aa710 217 crit_exit();
984263bc
MD
218 return error;
219}
220
221static int
dadab5e9 222rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
984263bc 223{
a49aa710 224 int error;
f23061d4 225
a49aa710 226 crit_enter();
dadab5e9 227 error = raw_usrreqs.pru_connect(so, nam, td); /* XXX just EINVAL */
a49aa710 228 crit_exit();
984263bc
MD
229 return error;
230}
231
232/* pru_connect2 is EOPNOTSUPP */
233/* pru_control is EOPNOTSUPP */
234
235static int
236rts_detach(struct socket *so)
237{
238 struct rawcb *rp = sotorawcb(so);
a49aa710 239 int error;
984263bc 240
a49aa710 241 crit_enter();
ef87f48d 242 if (rp != NULL) {
984263bc
MD
243 switch(rp->rcb_proto.sp_protocol) {
244 case AF_INET:
245 route_cb.ip_count--;
246 break;
247 case AF_INET6:
248 route_cb.ip6_count--;
249 break;
250 case AF_IPX:
251 route_cb.ipx_count--;
252 break;
253 case AF_NS:
254 route_cb.ns_count--;
255 break;
256 }
257 route_cb.any_count--;
258 }
259 error = raw_usrreqs.pru_detach(so);
a49aa710 260 crit_exit();
984263bc
MD
261 return error;
262}
263
264static int
265rts_disconnect(struct socket *so)
266{
a49aa710 267 int error;
f23061d4 268
a49aa710 269 crit_enter();
984263bc 270 error = raw_usrreqs.pru_disconnect(so);
a49aa710 271 crit_exit();
984263bc
MD
272 return error;
273}
274
275/* pru_listen is EOPNOTSUPP */
276
277static int
278rts_peeraddr(struct socket *so, struct sockaddr **nam)
279{
a49aa710 280 int error;
f23061d4 281
a49aa710 282 crit_enter();
984263bc 283 error = raw_usrreqs.pru_peeraddr(so, nam);
a49aa710 284 crit_exit();
984263bc
MD
285 return error;
286}
287
288/* pru_rcvd is EOPNOTSUPP */
289/* pru_rcvoob is EOPNOTSUPP */
290
291static int
292rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
dadab5e9 293 struct mbuf *control, struct thread *td)
984263bc 294{
a49aa710 295 int error;
f23061d4 296
a49aa710 297 crit_enter();
dadab5e9 298 error = raw_usrreqs.pru_send(so, flags, m, nam, control, td);
a49aa710 299 crit_exit();
984263bc
MD
300 return error;
301}
302
303/* pru_sense is null */
304
305static int
306rts_shutdown(struct socket *so)
307{
a49aa710 308 int error;
f23061d4 309
a49aa710 310 crit_enter();
984263bc 311 error = raw_usrreqs.pru_shutdown(so);
a49aa710 312 crit_exit();
984263bc
MD
313 return error;
314}
315
316static int
317rts_sockaddr(struct socket *so, struct sockaddr **nam)
318{
a49aa710 319 int error;
f23061d4 320
a49aa710 321 crit_enter();
984263bc 322 error = raw_usrreqs.pru_sockaddr(so, nam);
a49aa710 323 crit_exit();
984263bc
MD
324 return error;
325}
326
327static struct pr_usrreqs route_usrreqs = {
328 rts_abort, pru_accept_notsupp, rts_attach, rts_bind, rts_connect,
329 pru_connect2_notsupp, pru_control_notsupp, rts_detach, rts_disconnect,
330 pru_listen_notsupp, rts_peeraddr, pru_rcvd_notsupp, pru_rcvoob_notsupp,
331 rts_send, pru_sense_null, rts_shutdown, rts_sockaddr,
332 sosend, soreceive, sopoll
333};
334
590b8cd4
JH
335static __inline sa_family_t
336familyof(struct sockaddr *sa)
337{
338 return (sa != NULL ? sa->sa_family : 0);
339}
340
341static void
342rts_input(struct mbuf *m, sa_family_t family)
343{
344 static const struct sockaddr route_dst = { 2, PF_ROUTE, };
345 struct sockproto route_proto = { PF_ROUTE, family };
346
347 raw_input(m, &route_proto, &route_src, &route_dst);
348}
349
350static void *
351reallocbuf(void *ptr, size_t len, size_t olen)
352{
353 void *newptr;
354
355 newptr = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
356 if (newptr == NULL)
357 return NULL;
358 bcopy(ptr, newptr, olen);
359 free(ptr, M_RTABLE);
360 return (newptr);
361}
362
8e63efec
JH
363/*
364 * Internal helper routine for route_output().
365 */
590b8cd4
JH
366static int
367fillrtmsg(struct rt_msghdr **prtm, struct rtentry *rt,
368 struct rt_addrinfo *rtinfo)
369{
370 int msglen;
371 struct rt_msghdr *rtm = *prtm;
372
373 /* Fill in rt_addrinfo for call to rt_msg_buffer(). */
374 rtinfo->rti_dst = rt_key(rt);
375 rtinfo->rti_gateway = rt->rt_gateway;
376 rtinfo->rti_netmask = rt_mask(rt); /* might be NULL */
377 rtinfo->rti_genmask = rt->rt_genmask; /* might be NULL */
378 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
379 if (rt->rt_ifp != NULL) {
380 rtinfo->rti_ifpaddr =
381 TAILQ_FIRST(&rt->rt_ifp->if_addrhead)->ifa_addr;
382 rtinfo->rti_ifaaddr = rt->rt_ifa->ifa_addr;
383 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
384 rtinfo->rti_bcastaddr = rt->rt_ifa->ifa_dstaddr;
385 rtm->rtm_index = rt->rt_ifp->if_index;
386 } else {
387 rtinfo->rti_ifpaddr = NULL;
388 rtinfo->rti_ifaaddr = NULL;
389 }
390 }
391
392 msglen = rt_msgsize(rtm->rtm_type, rtinfo);
393 if (rtm->rtm_msglen < msglen) {
394 rtm = reallocbuf(rtm, msglen, rtm->rtm_msglen);
395 if (rtm == NULL)
396 return (ENOBUFS);
397 *prtm = rtm;
398 }
399 rt_msg_buffer(rtm->rtm_type, rtinfo, rtm, msglen);
400
401 rtm->rtm_flags = rt->rt_flags;
402 rtm->rtm_rmx = rt->rt_rmx;
403 rtm->rtm_addrs = rtinfo->rti_addrs;
404
405 return (0);
406}
407
984263bc
MD
408/*ARGSUSED*/
409static int
deffea2e 410route_output(struct mbuf *m, struct socket *so, ...)
984263bc 411{
2e9572df
JH
412 struct rt_msghdr *rtm = NULL;
413 struct rtentry *rt = NULL;
414 struct rtentry *saved_nrt = NULL;
984263bc 415 struct radix_node_head *rnh;
2e9572df 416 struct ifaddr *ifa = NULL;
f23061d4 417 struct rawcb *rp = NULL;
deffea2e 418 struct pr_output_info *oi;
590b8cd4 419 struct rt_addrinfo rtinfo;
ef87f48d 420 int len, error = 0;
deffea2e
JS
421 __va_list ap;
422
423 __va_start(ap, so);
424 oi = __va_arg(ap, struct pr_output_info *);
425 __va_end(ap);
984263bc 426
ef87f48d 427#define gotoerr(e) { error = e; goto flush;}
590b8cd4
JH
428
429 if (m == NULL ||
430 (m->m_len < sizeof(long) &&
431 (m = m_pullup(m, sizeof(long))) == NULL))
984263bc 432 return (ENOBUFS);
ef87f48d 433 if (!(m->m_flags & M_PKTHDR))
984263bc
MD
434 panic("route_output");
435 len = m->m_pkthdr.len;
590b8cd4 436 if (len < sizeof(struct rt_msghdr) ||
984263bc 437 len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
590b8cd4 438 rtinfo.rti_dst = NULL;
ef87f48d 439 gotoerr(EINVAL);
984263bc 440 }
590b8cd4 441 rtm = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
ef87f48d 442 if (rtm == NULL) {
590b8cd4 443 rtinfo.rti_dst = NULL;
ef87f48d 444 gotoerr(ENOBUFS);
984263bc
MD
445 }
446 m_copydata(m, 0, len, (caddr_t)rtm);
447 if (rtm->rtm_version != RTM_VERSION) {
590b8cd4 448 rtinfo.rti_dst = NULL;
ef87f48d 449 gotoerr(EPROTONOSUPPORT);
984263bc 450 }
47e78ae8 451 rtm->rtm_pid = oi->p_pid;
590b8cd4
JH
452 bzero(&rtinfo, sizeof(struct rt_addrinfo));
453 rtinfo.rti_addrs = rtm->rtm_addrs;
454 if (rt_xaddrs((char *)(rtm + 1), (char *)rtm + len, &rtinfo) != 0) {
455 rtinfo.rti_dst = NULL;
ef87f48d 456 gotoerr(EINVAL);
984263bc 457 }
590b8cd4
JH
458 rtinfo.rti_flags = rtm->rtm_flags;
459 if (rtinfo.rti_dst == NULL || rtinfo.rti_dst->sa_family >= AF_MAX ||
460 (rtinfo.rti_gateway && rtinfo.rti_gateway->sa_family >= AF_MAX))
ef87f48d
JH
461 gotoerr(EINVAL);
462
590b8cd4
JH
463 if (rtinfo.rti_genmask != NULL) {
464 struct radix_node *n;
ef87f48d 465
590b8cd4
JH
466#define clen(s) (*(u_char *)(s))
467 n = rn_addmask((char *)rtinfo.rti_genmask, TRUE, 1);
468 if (n != NULL &&
469 rtinfo.rti_genmask->sa_len >= clen(n->rn_key) &&
470 bcmp((char *)rtinfo.rti_genmask + 1,
471 (char *)n->rn_key + 1, clen(n->rn_key) - 1) == 0)
472 rtinfo.rti_genmask = (struct sockaddr *)n->rn_key;
984263bc 473 else
ef87f48d 474 gotoerr(ENOBUFS);
984263bc
MD
475 }
476
477 /*
478 * Verify that the caller has the appropriate privilege; RTM_GET
479 * is the only operation the non-superuser is allowed.
480 */
dadab5e9 481 if (rtm->rtm_type != RTM_GET && suser_cred(so->so_cred, 0) != 0)
ef87f48d 482 gotoerr(EPERM);
984263bc
MD
483
484 switch (rtm->rtm_type) {
984263bc 485 case RTM_ADD:
590b8cd4 486 if (rtinfo.rti_gateway == NULL)
ef87f48d 487 gotoerr(EINVAL);
590b8cd4 488 error = rtrequest1(RTM_ADD, &rtinfo, &saved_nrt);
ef87f48d 489 if (error == 0 && saved_nrt != NULL) {
590b8cd4
JH
490 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
491 &saved_nrt->rt_rmx);
984263bc
MD
492 saved_nrt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
493 saved_nrt->rt_rmx.rmx_locks |=
590b8cd4
JH
494 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
495 --saved_nrt->rt_refcnt;
496 saved_nrt->rt_genmask = rtinfo.rti_genmask;
984263bc
MD
497 }
498 break;
984263bc 499 case RTM_DELETE:
590b8cd4 500 error = rtrequest1(RTM_DELETE, &rtinfo, &saved_nrt);
984263bc
MD
501 if (error == 0) {
502 if ((rt = saved_nrt))
503 rt->rt_refcnt++;
590b8cd4
JH
504 if (fillrtmsg(&rtm, rt, &rtinfo) != 0)
505 gotoerr(ENOBUFS);
984263bc
MD
506 }
507 break;
984263bc
MD
508 case RTM_GET:
509 case RTM_CHANGE:
510 case RTM_LOCK:
590b8cd4 511 if ((rnh = rt_tables[rtinfo.rti_dst->sa_family]) == NULL)
ef87f48d 512 gotoerr(EAFNOSUPPORT);
590b8cd4
JH
513 rt = (struct rtentry *)
514 rnh->rnh_lookup((char *)rtinfo.rti_dst,
515 (char *)rtinfo.rti_netmask, rnh);
516 if (rt == NULL)
ef87f48d 517 gotoerr(ESRCH);
590b8cd4 518 rt->rt_refcnt++;
984263bc 519
590b8cd4 520 switch(rtm->rtm_type) {
984263bc 521 case RTM_GET:
590b8cd4
JH
522 if (fillrtmsg(&rtm, rt, &rtinfo) != 0)
523 gotoerr(ENOBUFS);
984263bc 524 break;
984263bc 525 case RTM_CHANGE:
ef87f48d
JH
526 /*
527 * new gateway could require new ifaddr, ifp;
528 * flags may also be different; ifp may be specified
529 * by ll sockaddr when protocol address is ambiguous
530 */
531 if (((rt->rt_flags & RTF_GATEWAY) &&
590b8cd4
JH
532 rtinfo.rti_gateway != NULL) ||
533 rtinfo.rti_ifpaddr != NULL ||
534 (rtinfo.rti_ifaaddr != NULL &&
535 sa_equal(rtinfo.rti_ifaaddr,
536 rt->rt_ifa->ifa_addr))) {
537 error = rt_getifa(&rtinfo);
538 if (error != 0)
ef87f48d 539 gotoerr(error);
984263bc 540 }
590b8cd4
JH
541 if (rtinfo.rti_gateway != NULL) {
542 error = rt_setgate(rt, rt_key(rt),
543 rtinfo.rti_gateway);
544 if (error != 0)
545 gotoerr(error);
546 }
547 if ((ifa = rtinfo.rti_ifa) != NULL) {
82ed7fc2 548 struct ifaddr *oifa = rt->rt_ifa;
ef87f48d 549
984263bc 550 if (oifa != ifa) {
f23061d4
JH
551 if (oifa && oifa->ifa_rtrequest)
552 oifa->ifa_rtrequest(RTM_DELETE,
590b8cd4 553 rt, &rtinfo);
f23061d4 554 IFAFREE(rt->rt_ifa);
f23061d4 555 IFAREF(ifa);
590b8cd4
JH
556 rt->rt_ifa = ifa;
557 rt->rt_ifp = rtinfo.rti_ifp;
984263bc
MD
558 }
559 }
560 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
590b8cd4 561 &rt->rt_rmx);
984263bc 562 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
590b8cd4
JH
563 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &rtinfo);
564 if (rtinfo.rti_genmask != NULL)
565 rt->rt_genmask = rtinfo.rti_genmask;
984263bc
MD
566 /*
567 * Fall into
568 */
569 case RTM_LOCK:
570 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
571 rt->rt_rmx.rmx_locks |=
572 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
573 break;
574 }
984263bc 575
590b8cd4 576 break;
984263bc 577 default:
ef87f48d 578 gotoerr(EOPNOTSUPP);
984263bc
MD
579 }
580
581flush:
590b8cd4
JH
582 if (rtm != NULL) {
583 if (error != 0)
984263bc
MD
584 rtm->rtm_errno = error;
585 else
586 rtm->rtm_flags |= RTF_DONE;
587 }
590b8cd4 588 if (rt != NULL)
984263bc 589 rtfree(rt);
984263bc
MD
590 /*
591 * Check to see if we don't want our own messages.
592 */
ef87f48d 593 if (!(so->so_options & SO_USELOOPBACK)) {
984263bc 594 if (route_cb.any_count <= 1) {
590b8cd4
JH
595 if (rtm != NULL)
596 free(rtm, M_RTABLE);
984263bc
MD
597 m_freem(m);
598 return (error);
599 }
600 /* There is another listener, so construct message */
601 rp = sotorawcb(so);
602 }
590b8cd4 603 if (rtm != NULL) {
984263bc
MD
604 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
605 if (m->m_pkthdr.len < rtm->rtm_msglen) {
606 m_freem(m);
607 m = NULL;
608 } else if (m->m_pkthdr.len > rtm->rtm_msglen)
609 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
590b8cd4 610 free(rtm, M_RTABLE);
984263bc 611 }
ef87f48d 612 if (rp != NULL)
984263bc 613 rp->rcb_proto.sp_family = 0; /* Avoid us */
ef87f48d 614 if (m != NULL)
590b8cd4 615 rts_input(m, familyof(rtinfo.rti_dst));
ef87f48d 616 if (rp != NULL)
984263bc 617 rp->rcb_proto.sp_family = PF_ROUTE;
984263bc
MD
618 return (error);
619}
620
621static void
ef87f48d 622rt_setmetrics(u_long which, struct rt_metrics *in, struct rt_metrics *out)
984263bc 623{
2e9572df
JH
624#define setmetric(flag, elt) if (which & (flag)) out->elt = in->elt;
625 setmetric(RTV_RPIPE, rmx_recvpipe);
626 setmetric(RTV_SPIPE, rmx_sendpipe);
627 setmetric(RTV_SSTHRESH, rmx_ssthresh);
628 setmetric(RTV_RTT, rmx_rtt);
629 setmetric(RTV_RTTVAR, rmx_rttvar);
630 setmetric(RTV_HOPCOUNT, rmx_hopcount);
631 setmetric(RTV_MTU, rmx_mtu);
632 setmetric(RTV_EXPIRE, rmx_expire);
633#undef setmetric
984263bc
MD
634}
635
636#define ROUNDUP(a) \
637 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
984263bc 638
984263bc
MD
639/*
640 * Extract the addresses of the passed sockaddrs.
641 * Do a little sanity checking so as to avoid bad memory references.
642 * This data is derived straight from userland.
643 */
644static int
ef87f48d 645rt_xaddrs(char *cp, char *cplim, struct rt_addrinfo *rtinfo)
984263bc 646{
82ed7fc2
RG
647 struct sockaddr *sa;
648 int i;
984263bc
MD
649
650 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
651 if ((rtinfo->rti_addrs & (1 << i)) == 0)
652 continue;
653 sa = (struct sockaddr *)cp;
654 /*
655 * It won't fit.
656 */
0c3c561c 657 if ((cp + sa->sa_len) > cplim) {
984263bc
MD
658 return (EINVAL);
659 }
660
661 /*
ef87f48d 662 * There are no more... Quit now.
984263bc 663 * If there are more bits, they are in error.
ef87f48d 664 * I've seen this. route(1) can evidently generate these.
984263bc 665 * This causes kernel to core dump.
ef87f48d 666 * For compatibility, if we see this, point to a safe address.
984263bc
MD
667 */
668 if (sa->sa_len == 0) {
590b8cd4
JH
669 static struct sockaddr sa_zero = {
670 sizeof sa_zero, AF_INET,
671 };
672
984263bc
MD
673 rtinfo->rti_info[i] = &sa_zero;
674 return (0); /* should be EINVAL but for compat */
675 }
676
ef87f48d 677 /* Accept the sockaddr. */
984263bc 678 rtinfo->rti_info[i] = sa;
590b8cd4 679 cp += ROUNDUP(sa->sa_len);
984263bc
MD
680 }
681 return (0);
682}
683
590b8cd4
JH
684static int
685rt_msghdrsize(int type)
984263bc 686{
984263bc 687 switch (type) {
984263bc
MD
688 case RTM_DELADDR:
689 case RTM_NEWADDR:
590b8cd4 690 return sizeof(struct ifa_msghdr);
984263bc
MD
691 case RTM_DELMADDR:
692 case RTM_NEWMADDR:
590b8cd4 693 return sizeof(struct ifma_msghdr);
984263bc 694 case RTM_IFINFO:
590b8cd4 695 return sizeof(struct if_msghdr);
984263bc 696 case RTM_IFANNOUNCE:
590b8cd4 697 return sizeof(struct if_announcemsghdr);
984263bc 698 default:
590b8cd4 699 return sizeof(struct rt_msghdr);
984263bc 700 }
590b8cd4
JH
701}
702
703static int
704rt_msgsize(int type, struct rt_addrinfo *rtinfo)
705{
706 int len, i;
707
708 len = rt_msghdrsize(type);
709 for (i = 0; i < RTAX_MAX; i++) {
710 if (rtinfo->rti_info[i] != NULL)
711 len += ROUNDUP(rtinfo->rti_info[i]->sa_len);
984263bc 712 }
590b8cd4
JH
713 len = ALIGN(len);
714 return len;
715}
716
717/*
718 * Build a routing message in a buffer.
719 * Copy the addresses in the rtinfo->rti_info[] sockaddr array
720 * to the end of the buffer after the message header.
721 *
722 * Set the rtinfo->rti_addrs bitmask of addresses present in rtinfo->rti_info[].
723 * This side-effect can be avoided if we reorder the addrs bitmask field in all
724 * the route messages to line up so we can set it here instead of back in the
725 * calling routine.
726 */
727static void
728rt_msg_buffer(int type, struct rt_addrinfo *rtinfo, void *buf, int msglen)
729{
730 struct rt_msghdr *rtm;
731 char *cp;
732 int dlen, i;
733
734 rtm = (struct rt_msghdr *) buf;
735 rtm->rtm_version = RTM_VERSION;
736 rtm->rtm_type = type;
737 rtm->rtm_msglen = msglen;
738
739 cp = (char *)buf + rt_msghdrsize(type);
740 rtinfo->rti_addrs = 0;
984263bc 741 for (i = 0; i < RTAX_MAX; i++) {
590b8cd4
JH
742 struct sockaddr *sa;
743
984263bc
MD
744 if ((sa = rtinfo->rti_info[i]) == NULL)
745 continue;
746 rtinfo->rti_addrs |= (1 << i);
747 dlen = ROUNDUP(sa->sa_len);
590b8cd4
JH
748 bcopy(sa, cp, dlen);
749 cp += dlen;
984263bc 750 }
984263bc
MD
751}
752
590b8cd4
JH
753/*
754 * Build a routing message in a mbuf chain.
755 * Copy the addresses in the rtinfo->rti_info[] sockaddr array
756 * to the end of the mbuf after the message header.
757 *
758 * Set the rtinfo->rti_addrs bitmask of addresses present in rtinfo->rti_info[].
759 * This side-effect can be avoided if we reorder the addrs bitmask field in all
760 * the route messages to line up so we can set it here instead of back in the
761 * calling routine.
762 */
763static struct mbuf *
764rt_msg_mbuf(int type, struct rt_addrinfo *rtinfo)
984263bc 765{
590b8cd4
JH
766 struct mbuf *m;
767 struct rt_msghdr *rtm;
768 int hlen, len;
82ed7fc2 769 int i;
984263bc 770
590b8cd4
JH
771 hlen = rt_msghdrsize(type);
772 KASSERT(hlen <= MCLBYTES, ("rt_msg_mbuf: hlen %d doesn't fit", hlen));
984263bc 773
50503f0f 774 m = m_getl(hlen, MB_DONTWAIT, MT_DATA, M_PKTHDR, NULL);
590b8cd4
JH
775 if (m == NULL)
776 return (NULL);
590b8cd4
JH
777 m->m_pkthdr.len = m->m_len = hlen;
778 m->m_pkthdr.rcvif = NULL;
779 rtinfo->rti_addrs = 0;
780 len = hlen;
984263bc 781 for (i = 0; i < RTAX_MAX; i++) {
82ed7fc2 782 struct sockaddr *sa;
590b8cd4 783 int dlen;
984263bc 784
ef87f48d 785 if ((sa = rtinfo->rti_info[i]) == NULL)
984263bc
MD
786 continue;
787 rtinfo->rti_addrs |= (1 << i);
788 dlen = ROUNDUP(sa->sa_len);
590b8cd4 789 m_copyback(m, len, dlen, (caddr_t)sa); /* can grow mbuf chain */
984263bc
MD
790 len += dlen;
791 }
590b8cd4
JH
792 if (m->m_pkthdr.len != len) { /* one of the m_copyback() calls failed */
793 m_freem(m);
794 return (NULL);
984263bc 795 }
590b8cd4
JH
796 rtm = mtod(m, struct rt_msghdr *);
797 bzero(rtm, hlen);
798 rtm->rtm_msglen = len;
799 rtm->rtm_version = RTM_VERSION;
800 rtm->rtm_type = type;
801 return (m);
984263bc
MD
802}
803
804/*
805 * This routine is called to generate a message from the routing
f23061d4 806 * socket indicating that a redirect has occurred, a routing lookup
984263bc
MD
807 * has failed, or that a protocol has detected timeouts to a particular
808 * destination.
809 */
810void
f23061d4 811rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error)
984263bc 812{
0c3c561c 813 struct sockaddr *dst = rtinfo->rti_info[RTAX_DST];
82ed7fc2
RG
814 struct rt_msghdr *rtm;
815 struct mbuf *m;
984263bc
MD
816
817 if (route_cb.any_count == 0)
818 return;
590b8cd4 819 m = rt_msg_mbuf(type, rtinfo);
ef87f48d 820 if (m == NULL)
984263bc
MD
821 return;
822 rtm = mtod(m, struct rt_msghdr *);
823 rtm->rtm_flags = RTF_DONE | flags;
824 rtm->rtm_errno = error;
825 rtm->rtm_addrs = rtinfo->rti_addrs;
590b8cd4 826 rts_input(m, familyof(dst));
984263bc
MD
827}
828
f3ed2586
JH
829void
830rt_dstmsg(int type, struct sockaddr *dst, int error)
831{
832 struct rt_msghdr *rtm;
833 struct rt_addrinfo addrs;
834 struct mbuf *m;
835
836 if (route_cb.any_count == 0)
837 return;
838 bzero(&addrs, sizeof(struct rt_addrinfo));
839 addrs.rti_info[RTAX_DST] = dst;
590b8cd4 840 m = rt_msg_mbuf(type, &addrs);
f3ed2586
JH
841 if (m == NULL)
842 return;
843 rtm = mtod(m, struct rt_msghdr *);
844 rtm->rtm_flags = RTF_DONE;
845 rtm->rtm_errno = error;
846 rtm->rtm_addrs = addrs.rti_addrs;
590b8cd4 847 rts_input(m, familyof(dst));
f3ed2586
JH
848}
849
984263bc
MD
850/*
851 * This routine is called to generate a message from the routing
852 * socket indicating that the status of a network interface has changed.
853 */
854void
0c3c561c 855rt_ifmsg(struct ifnet *ifp)
984263bc 856{
82ed7fc2 857 struct if_msghdr *ifm;
984263bc 858 struct mbuf *m;
590b8cd4 859 struct rt_addrinfo rtinfo;
984263bc
MD
860
861 if (route_cb.any_count == 0)
862 return;
590b8cd4
JH
863 bzero(&rtinfo, sizeof(struct rt_addrinfo));
864 m = rt_msg_mbuf(RTM_IFINFO, &rtinfo);
ef87f48d 865 if (m == NULL)
984263bc
MD
866 return;
867 ifm = mtod(m, struct if_msghdr *);
868 ifm->ifm_index = ifp->if_index;
9c095379 869 ifm->ifm_flags = ifp->if_flags;
984263bc 870 ifm->ifm_data = ifp->if_data;
590b8cd4
JH
871 ifm->ifm_addrs = 0;
872 rts_input(m, 0);
984263bc
MD
873}
874
372316d9
JH
875static void
876rt_ifamsg(int cmd, struct ifaddr *ifa)
877{
878 struct ifa_msghdr *ifam;
590b8cd4 879 struct rt_addrinfo rtinfo;
372316d9 880 struct mbuf *m;
372316d9
JH
881 struct ifnet *ifp = ifa->ifa_ifp;
882
590b8cd4
JH
883 bzero(&rtinfo, sizeof(struct rt_addrinfo));
884 rtinfo.rti_ifaaddr = ifa->ifa_addr;
885 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
886 rtinfo.rti_netmask = ifa->ifa_netmask;
887 rtinfo.rti_bcastaddr = ifa->ifa_dstaddr;
f23061d4 888
590b8cd4 889 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 890 if (m == NULL)
372316d9 891 return;
f23061d4 892
372316d9
JH
893 ifam = mtod(m, struct ifa_msghdr *);
894 ifam->ifam_index = ifp->if_index;
895 ifam->ifam_metric = ifa->ifa_metric;
896 ifam->ifam_flags = ifa->ifa_flags;
590b8cd4 897 ifam->ifam_addrs = rtinfo.rti_addrs;
f23061d4 898
590b8cd4 899 rts_input(m, familyof(ifa->ifa_addr));
372316d9
JH
900}
901
f3ed2586
JH
902void
903rt_rtmsg(int cmd, struct rtentry *rt, struct ifnet *ifp, int error)
372316d9
JH
904{
905 struct rt_msghdr *rtm;
590b8cd4 906 struct rt_addrinfo rtinfo;
372316d9 907 struct mbuf *m;
f3ed2586 908 struct sockaddr *dst;
372316d9
JH
909
910 if (rt == NULL)
911 return;
f23061d4 912
590b8cd4
JH
913 bzero(&rtinfo, sizeof(struct rt_addrinfo));
914 rtinfo.rti_dst = dst = rt_key(rt);
915 rtinfo.rti_gateway = rt->rt_gateway;
916 rtinfo.rti_netmask = rt_mask(rt);
f3ed2586 917 if (ifp != NULL)
590b8cd4
JH
918 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
919 rtinfo.rti_ifaaddr = rt->rt_ifa->ifa_addr;
f23061d4 920
590b8cd4 921 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 922 if (m == NULL)
372316d9 923 return;
f23061d4 924
372316d9 925 rtm = mtod(m, struct rt_msghdr *);
f3ed2586
JH
926 if (ifp != NULL)
927 rtm->rtm_index = ifp->if_index;
372316d9
JH
928 rtm->rtm_flags |= rt->rt_flags;
929 rtm->rtm_errno = error;
590b8cd4 930 rtm->rtm_addrs = rtinfo.rti_addrs;
f23061d4 931
590b8cd4 932 rts_input(m, familyof(dst));
372316d9
JH
933}
934
984263bc
MD
935/*
936 * This is called to generate messages from the routing socket
937 * indicating a network interface has had addresses associated with it.
938 * if we ever reverse the logic and replace messages TO the routing
939 * socket indicate a request to configure interfaces, then it will
940 * be unnecessary as the routing socket will automatically generate
941 * copies of it.
942 */
943void
0c3c561c 944rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
984263bc 945{
78812139
EN
946#ifdef SCTP
947 /*
948 * notify the SCTP stack
949 * this will only get called when an address is added/deleted
950 * XXX pass the ifaddr struct instead if ifa->ifa_addr...
951 */
952 if (cmd == RTM_ADD)
953 sctp_add_ip_address(ifa);
954 else if (cmd == RTM_DELETE)
955 sctp_delete_ip_address(ifa);
956#endif /* SCTP */
957
984263bc
MD
958 if (route_cb.any_count == 0)
959 return;
984263bc 960
372316d9
JH
961 if (cmd == RTM_ADD) {
962 rt_ifamsg(RTM_NEWADDR, ifa);
f3ed2586 963 rt_rtmsg(RTM_ADD, rt, ifa->ifa_ifp, error);
372316d9
JH
964 } else {
965 KASSERT((cmd == RTM_DELETE), ("unknown cmd %d", cmd));
f3ed2586 966 rt_rtmsg(RTM_DELETE, rt, ifa->ifa_ifp, error);
372316d9 967 rt_ifamsg(RTM_DELADDR, ifa);
984263bc
MD
968 }
969}
970
971/*
972 * This is the analogue to the rt_newaddrmsg which performs the same
973 * function but for multicast group memberhips. This is easier since
974 * there is no route state to worry about.
975 */
976void
0c3c561c 977rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma)
984263bc 978{
590b8cd4 979 struct rt_addrinfo rtinfo;
ef87f48d 980 struct mbuf *m = NULL;
984263bc
MD
981 struct ifnet *ifp = ifma->ifma_ifp;
982 struct ifma_msghdr *ifmam;
983
984 if (route_cb.any_count == 0)
985 return;
986
590b8cd4
JH
987 bzero(&rtinfo, sizeof(struct rt_addrinfo));
988 rtinfo.rti_ifaaddr = ifma->ifma_addr;
1782116d 989 if (ifp != NULL && !TAILQ_EMPTY(&ifp->if_addrhead))
590b8cd4 990 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
984263bc
MD
991 /*
992 * If a link-layer address is present, present it as a ``gateway''
993 * (similarly to how ARP entries, e.g., are presented).
994 */
590b8cd4 995 rtinfo.rti_gateway = ifma->ifma_lladdr;
f23061d4 996
590b8cd4 997 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 998 if (m == NULL)
984263bc 999 return;
f23061d4 1000
984263bc
MD
1001 ifmam = mtod(m, struct ifma_msghdr *);
1002 ifmam->ifmam_index = ifp->if_index;
590b8cd4 1003 ifmam->ifmam_addrs = rtinfo.rti_addrs;
f23061d4 1004
590b8cd4 1005 rts_input(m, familyof(ifma->ifma_addr));
984263bc
MD
1006}
1007
1008/*
1009 * This is called to generate routing socket messages indicating
1010 * network interface arrival and departure.
1011 */
1012void
590b8cd4 1013rt_ifannouncemsg(struct ifnet *ifp, int what)
984263bc 1014{
590b8cd4 1015 struct rt_addrinfo addrinfo;
984263bc 1016 struct mbuf *m;
590b8cd4 1017 struct if_announcemsghdr *ifan;
984263bc
MD
1018
1019 if (route_cb.any_count == 0)
1020 return;
f23061d4 1021
590b8cd4
JH
1022 bzero(&addrinfo, sizeof addrinfo);
1023 m = rt_msg_mbuf(RTM_IFANNOUNCE, &addrinfo);
984263bc
MD
1024 if (m == NULL)
1025 return;
f23061d4 1026
984263bc
MD
1027 ifan = mtod(m, struct if_announcemsghdr *);
1028 ifan->ifan_index = ifp->if_index;
5fe66e68 1029 strlcpy(ifan->ifan_name, ifp->if_xname, sizeof ifan->ifan_name);
984263bc 1030 ifan->ifan_what = what;
f23061d4 1031
590b8cd4
JH
1032 rts_input(m, 0);
1033}
f23061d4 1034
590b8cd4
JH
1035static int
1036resizewalkarg(struct walkarg *w, int len)
1037{
1038 void *newptr;
1039
1040 newptr = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
1041 if (newptr == NULL)
1042 return (ENOMEM);
1043 if (w->w_tmem != NULL)
1044 free(w->w_tmem, M_RTABLE);
1045 w->w_tmem = newptr;
1046 w->w_tmemsize = len;
1047 return (0);
1048}
984263bc
MD
1049
1050/*
1051 * This is used in dumping the kernel table via sysctl().
1052 */
1053int
590b8cd4 1054sysctl_dumpentry(struct radix_node *rn, void *vw)
984263bc 1055{
82ed7fc2
RG
1056 struct walkarg *w = vw;
1057 struct rtentry *rt = (struct rtentry *)rn;
590b8cd4
JH
1058 struct rt_addrinfo rtinfo;
1059 int error, msglen;
984263bc
MD
1060
1061 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
1062 return 0;
f23061d4 1063
590b8cd4
JH
1064 bzero(&rtinfo, sizeof(struct rt_addrinfo));
1065 rtinfo.rti_dst = rt_key(rt);
1066 rtinfo.rti_gateway = rt->rt_gateway;
1067 rtinfo.rti_netmask = rt_mask(rt);
1068 rtinfo.rti_genmask = rt->rt_genmask;
ef87f48d 1069 if (rt->rt_ifp != NULL) {
590b8cd4 1070 rtinfo.rti_ifpaddr =
ef87f48d 1071 TAILQ_FIRST(&rt->rt_ifp->if_addrhead)->ifa_addr;
590b8cd4 1072 rtinfo.rti_ifaaddr = rt->rt_ifa->ifa_addr;
984263bc 1073 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
590b8cd4 1074 rtinfo.rti_bcastaddr = rt->rt_ifa->ifa_dstaddr;
984263bc 1075 }
590b8cd4
JH
1076 msglen = rt_msgsize(RTM_GET, &rtinfo);
1077 if (w->w_tmemsize < msglen && resizewalkarg(w, msglen) != 0)
1078 return (ENOMEM);
1079 rt_msg_buffer(RTM_GET, &rtinfo, w->w_tmem, msglen);
1080 if (w->w_req != NULL) {
8e63efec 1081 struct rt_msghdr *rtm = w->w_tmem;
984263bc
MD
1082
1083 rtm->rtm_flags = rt->rt_flags;
1084 rtm->rtm_use = rt->rt_use;
1085 rtm->rtm_rmx = rt->rt_rmx;
1086 rtm->rtm_index = rt->rt_ifp->if_index;
1087 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
590b8cd4
JH
1088 rtm->rtm_addrs = rtinfo.rti_addrs;
1089 error = SYSCTL_OUT(w->w_req, rtm, msglen);
984263bc
MD
1090 return (error);
1091 }
590b8cd4 1092 return (0);
984263bc
MD
1093}
1094
590b8cd4
JH
1095static int
1096sysctl_iflist(int af, struct walkarg *w)
984263bc 1097{
82ed7fc2
RG
1098 struct ifnet *ifp;
1099 struct ifaddr *ifa;
590b8cd4
JH
1100 struct rt_addrinfo rtinfo;
1101 int msglen, error;
984263bc 1102
590b8cd4 1103 bzero(&rtinfo, sizeof(struct rt_addrinfo));
984263bc
MD
1104 TAILQ_FOREACH(ifp, &ifnet, if_link) {
1105 if (w->w_arg && w->w_arg != ifp->if_index)
1106 continue;
1107 ifa = TAILQ_FIRST(&ifp->if_addrhead);
590b8cd4
JH
1108 rtinfo.rti_ifpaddr = ifa->ifa_addr;
1109 msglen = rt_msgsize(RTM_IFINFO, &rtinfo);
1110 if (w->w_tmemsize < msglen && resizewalkarg(w, msglen) != 0)
1111 return (ENOMEM);
1112 rt_msg_buffer(RTM_IFINFO, &rtinfo, w->w_tmem, msglen);
1113 rtinfo.rti_ifpaddr = NULL;
ef87f48d 1114 if (w->w_req != NULL && w->w_tmem != NULL) {
8e63efec 1115 struct if_msghdr *ifm = w->w_tmem;
984263bc 1116
984263bc 1117 ifm->ifm_index = ifp->if_index;
9c095379 1118 ifm->ifm_flags = ifp->if_flags;
984263bc 1119 ifm->ifm_data = ifp->if_data;
590b8cd4
JH
1120 ifm->ifm_addrs = rtinfo.rti_addrs;
1121 error = SYSCTL_OUT(w->w_req, ifm, msglen);
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MD
1122 if (error)
1123 return (error);
1124 }
ef87f48d 1125 while ((ifa = TAILQ_NEXT(ifa, ifa_link)) != NULL) {
984263bc
MD
1126 if (af && af != ifa->ifa_addr->sa_family)
1127 continue;
590b8cd4
JH
1128 if (curproc->p_ucred->cr_prison &&
1129 prison_if(curthread, ifa->ifa_addr))
984263bc 1130 continue;
590b8cd4
JH
1131 rtinfo.rti_ifaaddr = ifa->ifa_addr;
1132 rtinfo.rti_netmask = ifa->ifa_netmask;
1133 rtinfo.rti_bcastaddr = ifa->ifa_dstaddr;
1134 msglen = rt_msgsize(RTM_NEWADDR, &rtinfo);
1135 if (w->w_tmemsize < msglen &&
1136 resizewalkarg(w, msglen) != 0)
1137 return (ENOMEM);
1138 rt_msg_buffer(RTM_NEWADDR, &rtinfo, w->w_tmem, msglen);
1139 if (w->w_req != NULL) {
8e63efec 1140 struct ifa_msghdr *ifam = w->w_tmem;
984263bc 1141
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MD
1142 ifam->ifam_index = ifa->ifa_ifp->if_index;
1143 ifam->ifam_flags = ifa->ifa_flags;
1144 ifam->ifam_metric = ifa->ifa_metric;
590b8cd4
JH
1145 ifam->ifam_addrs = rtinfo.rti_addrs;
1146 error = SYSCTL_OUT(w->w_req, w->w_tmem, msglen);
984263bc
MD
1147 if (error)
1148 return (error);
1149 }
1150 }
590b8cd4
JH
1151 rtinfo.rti_netmask = NULL;
1152 rtinfo.rti_ifaaddr = NULL;
1153 rtinfo.rti_bcastaddr = NULL;
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MD
1154 }
1155 return (0);
1156}
1157
1158static int
1159sysctl_rtsock(SYSCTL_HANDLER_ARGS)
1160{
1161 int *name = (int *)arg1;
1162 u_int namelen = arg2;
82ed7fc2 1163 struct radix_node_head *rnh;
a49aa710 1164 int i, error = EINVAL;
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MD
1165 u_char af;
1166 struct walkarg w;
1167
1168 name ++;
1169 namelen--;
1170 if (req->newptr)
1171 return (EPERM);
1172 if (namelen != 3)
1173 return (EINVAL);
1174 af = name[0];
5fe66e68 1175 bzero(&w, sizeof w);
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MD
1176 w.w_op = name[1];
1177 w.w_arg = name[2];
1178 w.w_req = req;
1179
a49aa710 1180 crit_enter();
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MD
1181 switch (w.w_op) {
1182
1183 case NET_RT_DUMP:
1184 case NET_RT_FLAGS:
1185 for (i = 1; i <= AF_MAX; i++)
1186 if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
1187 (error = rnh->rnh_walktree(rnh,
f23061d4 1188 sysctl_dumpentry, &w)))
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MD
1189 break;
1190 break;
1191
1192 case NET_RT_IFLIST:
1193 error = sysctl_iflist(af, &w);
1194 }
a49aa710 1195 crit_exit();
590b8cd4 1196 if (w.w_tmem != NULL)
984263bc
MD
1197 free(w.w_tmem, M_RTABLE);
1198 return (error);
1199}
1200
1201SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, "");
1202
1203/*
1204 * Definitions of protocols supported in the ROUTE domain.
1205 */
1206
1207extern struct domain routedomain; /* or at least forward */
1208
1209static struct protosw routesw[] = {
1210{ SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
1211 0, route_output, raw_ctlinput, 0,
9eeaa8a9 1212 cpu0_soport,
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MD
1213 raw_init, 0, 0, 0,
1214 &route_usrreqs
1215}
1216};
1217
9c70fe43
JH
1218static struct domain routedomain = {
1219 PF_ROUTE, "route", NULL, NULL, NULL,
1220 routesw, &routesw[(sizeof routesw)/(sizeof routesw[0])],
1221};
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MD
1222
1223DOMAIN_SET(route);