Reduce warnings as part of WARNS=6 cleaning, stage 4/6 (or so):
[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 $
5480c2a2 85 * $DragonFly: src/sys/net/rtsock.c,v 1.22 2005/02/24 23:41:43 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;
590b8cd4 121 char *w_tmem;
984263bc
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)
984263bc
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);
984263bc
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 */
984263bc
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
984263bc
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
984263bc
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
357static int
358fillrtmsg(struct rt_msghdr **prtm, struct rtentry *rt,
359 struct rt_addrinfo *rtinfo)
360{
361 int msglen;
362 struct rt_msghdr *rtm = *prtm;
363
364 /* Fill in rt_addrinfo for call to rt_msg_buffer(). */
365 rtinfo->rti_dst = rt_key(rt);
366 rtinfo->rti_gateway = rt->rt_gateway;
367 rtinfo->rti_netmask = rt_mask(rt); /* might be NULL */
368 rtinfo->rti_genmask = rt->rt_genmask; /* might be NULL */
369 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
370 if (rt->rt_ifp != NULL) {
371 rtinfo->rti_ifpaddr =
372 TAILQ_FIRST(&rt->rt_ifp->if_addrhead)->ifa_addr;
373 rtinfo->rti_ifaaddr = rt->rt_ifa->ifa_addr;
374 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
375 rtinfo->rti_bcastaddr = rt->rt_ifa->ifa_dstaddr;
376 rtm->rtm_index = rt->rt_ifp->if_index;
377 } else {
378 rtinfo->rti_ifpaddr = NULL;
379 rtinfo->rti_ifaaddr = NULL;
380 }
381 }
382
383 msglen = rt_msgsize(rtm->rtm_type, rtinfo);
384 if (rtm->rtm_msglen < msglen) {
385 rtm = reallocbuf(rtm, msglen, rtm->rtm_msglen);
386 if (rtm == NULL)
387 return (ENOBUFS);
388 *prtm = rtm;
389 }
390 rt_msg_buffer(rtm->rtm_type, rtinfo, rtm, msglen);
391
392 rtm->rtm_flags = rt->rt_flags;
393 rtm->rtm_rmx = rt->rt_rmx;
394 rtm->rtm_addrs = rtinfo->rti_addrs;
395
396 return (0);
397}
398
984263bc
MD
399/*ARGSUSED*/
400static int
deffea2e 401route_output(struct mbuf *m, struct socket *so, ...)
984263bc 402{
2e9572df
JH
403 struct rt_msghdr *rtm = NULL;
404 struct rtentry *rt = NULL;
405 struct rtentry *saved_nrt = NULL;
984263bc 406 struct radix_node_head *rnh;
2e9572df 407 struct ifaddr *ifa = NULL;
f23061d4 408 struct rawcb *rp = NULL;
deffea2e 409 struct pr_output_info *oi;
590b8cd4 410 struct rt_addrinfo rtinfo;
ef87f48d 411 int len, error = 0;
deffea2e
JS
412 __va_list ap;
413
414 __va_start(ap, so);
415 oi = __va_arg(ap, struct pr_output_info *);
416 __va_end(ap);
984263bc 417
ef87f48d 418#define gotoerr(e) { error = e; goto flush;}
590b8cd4
JH
419
420 if (m == NULL ||
421 (m->m_len < sizeof(long) &&
422 (m = m_pullup(m, sizeof(long))) == NULL))
984263bc 423 return (ENOBUFS);
ef87f48d 424 if (!(m->m_flags & M_PKTHDR))
984263bc
MD
425 panic("route_output");
426 len = m->m_pkthdr.len;
590b8cd4 427 if (len < sizeof(struct rt_msghdr) ||
984263bc 428 len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
590b8cd4 429 rtinfo.rti_dst = NULL;
ef87f48d 430 gotoerr(EINVAL);
984263bc 431 }
590b8cd4 432 rtm = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
ef87f48d 433 if (rtm == NULL) {
590b8cd4 434 rtinfo.rti_dst = NULL;
ef87f48d 435 gotoerr(ENOBUFS);
984263bc
MD
436 }
437 m_copydata(m, 0, len, (caddr_t)rtm);
438 if (rtm->rtm_version != RTM_VERSION) {
590b8cd4 439 rtinfo.rti_dst = NULL;
ef87f48d 440 gotoerr(EPROTONOSUPPORT);
984263bc 441 }
47e78ae8 442 rtm->rtm_pid = oi->p_pid;
590b8cd4
JH
443 bzero(&rtinfo, sizeof(struct rt_addrinfo));
444 rtinfo.rti_addrs = rtm->rtm_addrs;
445 if (rt_xaddrs((char *)(rtm + 1), (char *)rtm + len, &rtinfo) != 0) {
446 rtinfo.rti_dst = NULL;
ef87f48d 447 gotoerr(EINVAL);
984263bc 448 }
590b8cd4
JH
449 rtinfo.rti_flags = rtm->rtm_flags;
450 if (rtinfo.rti_dst == NULL || rtinfo.rti_dst->sa_family >= AF_MAX ||
451 (rtinfo.rti_gateway && rtinfo.rti_gateway->sa_family >= AF_MAX))
ef87f48d
JH
452 gotoerr(EINVAL);
453
590b8cd4
JH
454 if (rtinfo.rti_genmask != NULL) {
455 struct radix_node *n;
ef87f48d 456
590b8cd4
JH
457#define clen(s) (*(u_char *)(s))
458 n = rn_addmask((char *)rtinfo.rti_genmask, TRUE, 1);
459 if (n != NULL &&
460 rtinfo.rti_genmask->sa_len >= clen(n->rn_key) &&
461 bcmp((char *)rtinfo.rti_genmask + 1,
462 (char *)n->rn_key + 1, clen(n->rn_key) - 1) == 0)
463 rtinfo.rti_genmask = (struct sockaddr *)n->rn_key;
984263bc 464 else
ef87f48d 465 gotoerr(ENOBUFS);
984263bc
MD
466 }
467
468 /*
469 * Verify that the caller has the appropriate privilege; RTM_GET
470 * is the only operation the non-superuser is allowed.
471 */
dadab5e9 472 if (rtm->rtm_type != RTM_GET && suser_cred(so->so_cred, 0) != 0)
ef87f48d 473 gotoerr(EPERM);
984263bc
MD
474
475 switch (rtm->rtm_type) {
984263bc 476 case RTM_ADD:
590b8cd4 477 if (rtinfo.rti_gateway == NULL)
ef87f48d 478 gotoerr(EINVAL);
590b8cd4 479 error = rtrequest1(RTM_ADD, &rtinfo, &saved_nrt);
ef87f48d 480 if (error == 0 && saved_nrt != NULL) {
590b8cd4
JH
481 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
482 &saved_nrt->rt_rmx);
984263bc
MD
483 saved_nrt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
484 saved_nrt->rt_rmx.rmx_locks |=
590b8cd4
JH
485 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
486 --saved_nrt->rt_refcnt;
487 saved_nrt->rt_genmask = rtinfo.rti_genmask;
984263bc
MD
488 }
489 break;
984263bc 490 case RTM_DELETE:
590b8cd4 491 error = rtrequest1(RTM_DELETE, &rtinfo, &saved_nrt);
984263bc
MD
492 if (error == 0) {
493 if ((rt = saved_nrt))
494 rt->rt_refcnt++;
590b8cd4
JH
495 if (fillrtmsg(&rtm, rt, &rtinfo) != 0)
496 gotoerr(ENOBUFS);
984263bc
MD
497 }
498 break;
984263bc
MD
499 case RTM_GET:
500 case RTM_CHANGE:
501 case RTM_LOCK:
590b8cd4 502 if ((rnh = rt_tables[rtinfo.rti_dst->sa_family]) == NULL)
ef87f48d 503 gotoerr(EAFNOSUPPORT);
590b8cd4
JH
504 rt = (struct rtentry *)
505 rnh->rnh_lookup((char *)rtinfo.rti_dst,
506 (char *)rtinfo.rti_netmask, rnh);
507 if (rt == NULL)
ef87f48d 508 gotoerr(ESRCH);
590b8cd4 509 rt->rt_refcnt++;
984263bc 510
590b8cd4 511 switch(rtm->rtm_type) {
984263bc 512 case RTM_GET:
590b8cd4
JH
513 if (fillrtmsg(&rtm, rt, &rtinfo) != 0)
514 gotoerr(ENOBUFS);
984263bc 515 break;
984263bc 516 case RTM_CHANGE:
ef87f48d
JH
517 /*
518 * new gateway could require new ifaddr, ifp;
519 * flags may also be different; ifp may be specified
520 * by ll sockaddr when protocol address is ambiguous
521 */
522 if (((rt->rt_flags & RTF_GATEWAY) &&
590b8cd4
JH
523 rtinfo.rti_gateway != NULL) ||
524 rtinfo.rti_ifpaddr != NULL ||
525 (rtinfo.rti_ifaaddr != NULL &&
526 sa_equal(rtinfo.rti_ifaaddr,
527 rt->rt_ifa->ifa_addr))) {
528 error = rt_getifa(&rtinfo);
529 if (error != 0)
ef87f48d 530 gotoerr(error);
984263bc 531 }
590b8cd4
JH
532 if (rtinfo.rti_gateway != NULL) {
533 error = rt_setgate(rt, rt_key(rt),
534 rtinfo.rti_gateway);
535 if (error != 0)
536 gotoerr(error);
537 }
538 if ((ifa = rtinfo.rti_ifa) != NULL) {
82ed7fc2 539 struct ifaddr *oifa = rt->rt_ifa;
ef87f48d 540
984263bc 541 if (oifa != ifa) {
f23061d4
JH
542 if (oifa && oifa->ifa_rtrequest)
543 oifa->ifa_rtrequest(RTM_DELETE,
590b8cd4 544 rt, &rtinfo);
f23061d4 545 IFAFREE(rt->rt_ifa);
f23061d4 546 IFAREF(ifa);
590b8cd4
JH
547 rt->rt_ifa = ifa;
548 rt->rt_ifp = rtinfo.rti_ifp;
984263bc
MD
549 }
550 }
551 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
590b8cd4 552 &rt->rt_rmx);
984263bc 553 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
590b8cd4
JH
554 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &rtinfo);
555 if (rtinfo.rti_genmask != NULL)
556 rt->rt_genmask = rtinfo.rti_genmask;
984263bc
MD
557 /*
558 * Fall into
559 */
560 case RTM_LOCK:
561 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
562 rt->rt_rmx.rmx_locks |=
563 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
564 break;
565 }
984263bc 566
590b8cd4 567 break;
984263bc 568 default:
ef87f48d 569 gotoerr(EOPNOTSUPP);
984263bc
MD
570 }
571
572flush:
590b8cd4
JH
573 if (rtm != NULL) {
574 if (error != 0)
984263bc
MD
575 rtm->rtm_errno = error;
576 else
577 rtm->rtm_flags |= RTF_DONE;
578 }
590b8cd4 579 if (rt != NULL)
984263bc 580 rtfree(rt);
984263bc
MD
581 /*
582 * Check to see if we don't want our own messages.
583 */
ef87f48d 584 if (!(so->so_options & SO_USELOOPBACK)) {
984263bc 585 if (route_cb.any_count <= 1) {
590b8cd4
JH
586 if (rtm != NULL)
587 free(rtm, M_RTABLE);
984263bc
MD
588 m_freem(m);
589 return (error);
590 }
591 /* There is another listener, so construct message */
592 rp = sotorawcb(so);
593 }
590b8cd4 594 if (rtm != NULL) {
984263bc
MD
595 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
596 if (m->m_pkthdr.len < rtm->rtm_msglen) {
597 m_freem(m);
598 m = NULL;
599 } else if (m->m_pkthdr.len > rtm->rtm_msglen)
600 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
590b8cd4 601 free(rtm, M_RTABLE);
984263bc 602 }
ef87f48d 603 if (rp != NULL)
984263bc 604 rp->rcb_proto.sp_family = 0; /* Avoid us */
ef87f48d 605 if (m != NULL)
590b8cd4 606 rts_input(m, familyof(rtinfo.rti_dst));
ef87f48d 607 if (rp != NULL)
984263bc 608 rp->rcb_proto.sp_family = PF_ROUTE;
984263bc
MD
609 return (error);
610}
611
612static void
ef87f48d 613rt_setmetrics(u_long which, struct rt_metrics *in, struct rt_metrics *out)
984263bc 614{
2e9572df
JH
615#define setmetric(flag, elt) if (which & (flag)) out->elt = in->elt;
616 setmetric(RTV_RPIPE, rmx_recvpipe);
617 setmetric(RTV_SPIPE, rmx_sendpipe);
618 setmetric(RTV_SSTHRESH, rmx_ssthresh);
619 setmetric(RTV_RTT, rmx_rtt);
620 setmetric(RTV_RTTVAR, rmx_rttvar);
621 setmetric(RTV_HOPCOUNT, rmx_hopcount);
622 setmetric(RTV_MTU, rmx_mtu);
623 setmetric(RTV_EXPIRE, rmx_expire);
624#undef setmetric
984263bc
MD
625}
626
627#define ROUNDUP(a) \
628 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
984263bc 629
984263bc
MD
630/*
631 * Extract the addresses of the passed sockaddrs.
632 * Do a little sanity checking so as to avoid bad memory references.
633 * This data is derived straight from userland.
634 */
635static int
ef87f48d 636rt_xaddrs(char *cp, char *cplim, struct rt_addrinfo *rtinfo)
984263bc 637{
82ed7fc2
RG
638 struct sockaddr *sa;
639 int i;
984263bc
MD
640
641 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
642 if ((rtinfo->rti_addrs & (1 << i)) == 0)
643 continue;
644 sa = (struct sockaddr *)cp;
645 /*
646 * It won't fit.
647 */
0c3c561c 648 if ((cp + sa->sa_len) > cplim) {
984263bc
MD
649 return (EINVAL);
650 }
651
652 /*
ef87f48d 653 * There are no more... Quit now.
984263bc 654 * If there are more bits, they are in error.
ef87f48d 655 * I've seen this. route(1) can evidently generate these.
984263bc 656 * This causes kernel to core dump.
ef87f48d 657 * For compatibility, if we see this, point to a safe address.
984263bc
MD
658 */
659 if (sa->sa_len == 0) {
590b8cd4
JH
660 static struct sockaddr sa_zero = {
661 sizeof sa_zero, AF_INET,
662 };
663
984263bc
MD
664 rtinfo->rti_info[i] = &sa_zero;
665 return (0); /* should be EINVAL but for compat */
666 }
667
ef87f48d 668 /* Accept the sockaddr. */
984263bc 669 rtinfo->rti_info[i] = sa;
590b8cd4 670 cp += ROUNDUP(sa->sa_len);
984263bc
MD
671 }
672 return (0);
673}
674
590b8cd4
JH
675static int
676rt_msghdrsize(int type)
984263bc 677{
984263bc 678 switch (type) {
984263bc
MD
679 case RTM_DELADDR:
680 case RTM_NEWADDR:
590b8cd4 681 return sizeof(struct ifa_msghdr);
984263bc
MD
682 case RTM_DELMADDR:
683 case RTM_NEWMADDR:
590b8cd4 684 return sizeof(struct ifma_msghdr);
984263bc 685 case RTM_IFINFO:
590b8cd4 686 return sizeof(struct if_msghdr);
984263bc 687 case RTM_IFANNOUNCE:
590b8cd4 688 return sizeof(struct if_announcemsghdr);
984263bc 689 default:
590b8cd4 690 return sizeof(struct rt_msghdr);
984263bc 691 }
590b8cd4
JH
692}
693
694static int
695rt_msgsize(int type, struct rt_addrinfo *rtinfo)
696{
697 int len, i;
698
699 len = rt_msghdrsize(type);
700 for (i = 0; i < RTAX_MAX; i++) {
701 if (rtinfo->rti_info[i] != NULL)
702 len += ROUNDUP(rtinfo->rti_info[i]->sa_len);
984263bc 703 }
590b8cd4
JH
704 len = ALIGN(len);
705 return len;
706}
707
708/*
709 * Build a routing message in a buffer.
710 * Copy the addresses in the rtinfo->rti_info[] sockaddr array
711 * to the end of the buffer after the message header.
712 *
713 * Set the rtinfo->rti_addrs bitmask of addresses present in rtinfo->rti_info[].
714 * This side-effect can be avoided if we reorder the addrs bitmask field in all
715 * the route messages to line up so we can set it here instead of back in the
716 * calling routine.
717 */
718static void
719rt_msg_buffer(int type, struct rt_addrinfo *rtinfo, void *buf, int msglen)
720{
721 struct rt_msghdr *rtm;
722 char *cp;
723 int dlen, i;
724
725 rtm = (struct rt_msghdr *) buf;
726 rtm->rtm_version = RTM_VERSION;
727 rtm->rtm_type = type;
728 rtm->rtm_msglen = msglen;
729
730 cp = (char *)buf + rt_msghdrsize(type);
731 rtinfo->rti_addrs = 0;
984263bc 732 for (i = 0; i < RTAX_MAX; i++) {
590b8cd4
JH
733 struct sockaddr *sa;
734
984263bc
MD
735 if ((sa = rtinfo->rti_info[i]) == NULL)
736 continue;
737 rtinfo->rti_addrs |= (1 << i);
738 dlen = ROUNDUP(sa->sa_len);
590b8cd4
JH
739 bcopy(sa, cp, dlen);
740 cp += dlen;
984263bc 741 }
984263bc
MD
742}
743
590b8cd4
JH
744/*
745 * Build a routing message in a mbuf chain.
746 * Copy the addresses in the rtinfo->rti_info[] sockaddr array
747 * to the end of the mbuf after the message header.
748 *
749 * Set the rtinfo->rti_addrs bitmask of addresses present in rtinfo->rti_info[].
750 * This side-effect can be avoided if we reorder the addrs bitmask field in all
751 * the route messages to line up so we can set it here instead of back in the
752 * calling routine.
753 */
754static struct mbuf *
755rt_msg_mbuf(int type, struct rt_addrinfo *rtinfo)
984263bc 756{
590b8cd4
JH
757 struct mbuf *m;
758 struct rt_msghdr *rtm;
759 int hlen, len;
82ed7fc2 760 int i;
984263bc 761
590b8cd4
JH
762 hlen = rt_msghdrsize(type);
763 KASSERT(hlen <= MCLBYTES, ("rt_msg_mbuf: hlen %d doesn't fit", hlen));
984263bc 764
590b8cd4
JH
765 m = m_gethdr(MB_DONTWAIT, MT_DATA);
766 if (m == NULL)
767 return (NULL);
768 if (hlen > MHLEN) {
769 MCLGET(m, MB_DONTWAIT);
770 if (!(m->m_flags & M_EXT)) {
771 m_free(m);
772 return (NULL);
773 }
984263bc 774 }
590b8cd4
JH
775 m->m_pkthdr.len = m->m_len = hlen;
776 m->m_pkthdr.rcvif = NULL;
777 rtinfo->rti_addrs = 0;
778 len = hlen;
984263bc 779 for (i = 0; i < RTAX_MAX; i++) {
82ed7fc2 780 struct sockaddr *sa;
590b8cd4 781 int dlen;
984263bc 782
ef87f48d 783 if ((sa = rtinfo->rti_info[i]) == NULL)
984263bc
MD
784 continue;
785 rtinfo->rti_addrs |= (1 << i);
786 dlen = ROUNDUP(sa->sa_len);
590b8cd4 787 m_copyback(m, len, dlen, (caddr_t)sa); /* can grow mbuf chain */
984263bc
MD
788 len += dlen;
789 }
590b8cd4
JH
790 if (m->m_pkthdr.len != len) { /* one of the m_copyback() calls failed */
791 m_freem(m);
792 return (NULL);
984263bc 793 }
590b8cd4
JH
794 rtm = mtod(m, struct rt_msghdr *);
795 bzero(rtm, hlen);
796 rtm->rtm_msglen = len;
797 rtm->rtm_version = RTM_VERSION;
798 rtm->rtm_type = type;
799 return (m);
984263bc
MD
800}
801
802/*
803 * This routine is called to generate a message from the routing
f23061d4 804 * socket indicating that a redirect has occurred, a routing lookup
984263bc
MD
805 * has failed, or that a protocol has detected timeouts to a particular
806 * destination.
807 */
808void
f23061d4 809rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error)
984263bc 810{
0c3c561c 811 struct sockaddr *dst = rtinfo->rti_info[RTAX_DST];
82ed7fc2
RG
812 struct rt_msghdr *rtm;
813 struct mbuf *m;
984263bc
MD
814
815 if (route_cb.any_count == 0)
816 return;
590b8cd4 817 m = rt_msg_mbuf(type, rtinfo);
ef87f48d 818 if (m == NULL)
984263bc
MD
819 return;
820 rtm = mtod(m, struct rt_msghdr *);
821 rtm->rtm_flags = RTF_DONE | flags;
822 rtm->rtm_errno = error;
823 rtm->rtm_addrs = rtinfo->rti_addrs;
590b8cd4 824 rts_input(m, familyof(dst));
984263bc
MD
825}
826
f3ed2586
JH
827void
828rt_dstmsg(int type, struct sockaddr *dst, int error)
829{
830 struct rt_msghdr *rtm;
831 struct rt_addrinfo addrs;
832 struct mbuf *m;
833
834 if (route_cb.any_count == 0)
835 return;
836 bzero(&addrs, sizeof(struct rt_addrinfo));
837 addrs.rti_info[RTAX_DST] = dst;
590b8cd4 838 m = rt_msg_mbuf(type, &addrs);
f3ed2586
JH
839 if (m == NULL)
840 return;
841 rtm = mtod(m, struct rt_msghdr *);
842 rtm->rtm_flags = RTF_DONE;
843 rtm->rtm_errno = error;
844 rtm->rtm_addrs = addrs.rti_addrs;
590b8cd4 845 rts_input(m, familyof(dst));
f3ed2586
JH
846}
847
984263bc
MD
848/*
849 * This routine is called to generate a message from the routing
850 * socket indicating that the status of a network interface has changed.
851 */
852void
0c3c561c 853rt_ifmsg(struct ifnet *ifp)
984263bc 854{
82ed7fc2 855 struct if_msghdr *ifm;
984263bc 856 struct mbuf *m;
590b8cd4 857 struct rt_addrinfo rtinfo;
984263bc
MD
858
859 if (route_cb.any_count == 0)
860 return;
590b8cd4
JH
861 bzero(&rtinfo, sizeof(struct rt_addrinfo));
862 m = rt_msg_mbuf(RTM_IFINFO, &rtinfo);
ef87f48d 863 if (m == NULL)
984263bc
MD
864 return;
865 ifm = mtod(m, struct if_msghdr *);
866 ifm->ifm_index = ifp->if_index;
867 ifm->ifm_flags = (u_short)ifp->if_flags;
868 ifm->ifm_data = ifp->if_data;
590b8cd4
JH
869 ifm->ifm_addrs = 0;
870 rts_input(m, 0);
984263bc
MD
871}
872
372316d9
JH
873static void
874rt_ifamsg(int cmd, struct ifaddr *ifa)
875{
876 struct ifa_msghdr *ifam;
590b8cd4 877 struct rt_addrinfo rtinfo;
372316d9 878 struct mbuf *m;
372316d9
JH
879 struct ifnet *ifp = ifa->ifa_ifp;
880
590b8cd4
JH
881 bzero(&rtinfo, sizeof(struct rt_addrinfo));
882 rtinfo.rti_ifaaddr = ifa->ifa_addr;
883 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
884 rtinfo.rti_netmask = ifa->ifa_netmask;
885 rtinfo.rti_bcastaddr = ifa->ifa_dstaddr;
f23061d4 886
590b8cd4 887 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 888 if (m == NULL)
372316d9 889 return;
f23061d4 890
372316d9
JH
891 ifam = mtod(m, struct ifa_msghdr *);
892 ifam->ifam_index = ifp->if_index;
893 ifam->ifam_metric = ifa->ifa_metric;
894 ifam->ifam_flags = ifa->ifa_flags;
590b8cd4 895 ifam->ifam_addrs = rtinfo.rti_addrs;
f23061d4 896
590b8cd4 897 rts_input(m, familyof(ifa->ifa_addr));
372316d9
JH
898}
899
f3ed2586
JH
900void
901rt_rtmsg(int cmd, struct rtentry *rt, struct ifnet *ifp, int error)
372316d9
JH
902{
903 struct rt_msghdr *rtm;
590b8cd4 904 struct rt_addrinfo rtinfo;
372316d9 905 struct mbuf *m;
f3ed2586 906 struct sockaddr *dst;
372316d9
JH
907
908 if (rt == NULL)
909 return;
f23061d4 910
590b8cd4
JH
911 bzero(&rtinfo, sizeof(struct rt_addrinfo));
912 rtinfo.rti_dst = dst = rt_key(rt);
913 rtinfo.rti_gateway = rt->rt_gateway;
914 rtinfo.rti_netmask = rt_mask(rt);
f3ed2586 915 if (ifp != NULL)
590b8cd4
JH
916 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
917 rtinfo.rti_ifaaddr = rt->rt_ifa->ifa_addr;
f23061d4 918
590b8cd4 919 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 920 if (m == NULL)
372316d9 921 return;
f23061d4 922
372316d9 923 rtm = mtod(m, struct rt_msghdr *);
f3ed2586
JH
924 if (ifp != NULL)
925 rtm->rtm_index = ifp->if_index;
372316d9
JH
926 rtm->rtm_flags |= rt->rt_flags;
927 rtm->rtm_errno = error;
590b8cd4 928 rtm->rtm_addrs = rtinfo.rti_addrs;
f23061d4 929
590b8cd4 930 rts_input(m, familyof(dst));
372316d9
JH
931}
932
984263bc
MD
933/*
934 * This is called to generate messages from the routing socket
935 * indicating a network interface has had addresses associated with it.
936 * if we ever reverse the logic and replace messages TO the routing
937 * socket indicate a request to configure interfaces, then it will
938 * be unnecessary as the routing socket will automatically generate
939 * copies of it.
940 */
941void
0c3c561c 942rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
984263bc 943{
984263bc
MD
944 if (route_cb.any_count == 0)
945 return;
984263bc 946
372316d9
JH
947 if (cmd == RTM_ADD) {
948 rt_ifamsg(RTM_NEWADDR, ifa);
f3ed2586 949 rt_rtmsg(RTM_ADD, rt, ifa->ifa_ifp, error);
372316d9
JH
950 } else {
951 KASSERT((cmd == RTM_DELETE), ("unknown cmd %d", cmd));
f3ed2586 952 rt_rtmsg(RTM_DELETE, rt, ifa->ifa_ifp, error);
372316d9 953 rt_ifamsg(RTM_DELADDR, ifa);
984263bc
MD
954 }
955}
956
957/*
958 * This is the analogue to the rt_newaddrmsg which performs the same
959 * function but for multicast group memberhips. This is easier since
960 * there is no route state to worry about.
961 */
962void
0c3c561c 963rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma)
984263bc 964{
590b8cd4 965 struct rt_addrinfo rtinfo;
ef87f48d 966 struct mbuf *m = NULL;
984263bc
MD
967 struct ifnet *ifp = ifma->ifma_ifp;
968 struct ifma_msghdr *ifmam;
969
970 if (route_cb.any_count == 0)
971 return;
972
590b8cd4
JH
973 bzero(&rtinfo, sizeof(struct rt_addrinfo));
974 rtinfo.rti_ifaaddr = ifma->ifma_addr;
5480c2a2 975 if (ifp != NULL && TAILQ_FIRST(&ifp->if_addrhead) != NULL)
590b8cd4 976 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
984263bc 977 else
590b8cd4 978 rtinfo.rti_ifpaddr = NULL;
984263bc
MD
979 /*
980 * If a link-layer address is present, present it as a ``gateway''
981 * (similarly to how ARP entries, e.g., are presented).
982 */
590b8cd4 983 rtinfo.rti_gateway = ifma->ifma_lladdr;
f23061d4 984
590b8cd4 985 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 986 if (m == NULL)
984263bc 987 return;
f23061d4 988
984263bc
MD
989 ifmam = mtod(m, struct ifma_msghdr *);
990 ifmam->ifmam_index = ifp->if_index;
590b8cd4 991 ifmam->ifmam_addrs = rtinfo.rti_addrs;
f23061d4 992
590b8cd4 993 rts_input(m, familyof(ifma->ifma_addr));
984263bc
MD
994}
995
996/*
997 * This is called to generate routing socket messages indicating
998 * network interface arrival and departure.
999 */
1000void
590b8cd4 1001rt_ifannouncemsg(struct ifnet *ifp, int what)
984263bc 1002{
590b8cd4 1003 struct rt_addrinfo addrinfo;
984263bc 1004 struct mbuf *m;
590b8cd4 1005 struct if_announcemsghdr *ifan;
984263bc
MD
1006
1007 if (route_cb.any_count == 0)
1008 return;
f23061d4 1009
590b8cd4
JH
1010 bzero(&addrinfo, sizeof addrinfo);
1011 m = rt_msg_mbuf(RTM_IFANNOUNCE, &addrinfo);
984263bc
MD
1012 if (m == NULL)
1013 return;
f23061d4 1014
984263bc
MD
1015 ifan = mtod(m, struct if_announcemsghdr *);
1016 ifan->ifan_index = ifp->if_index;
5fe66e68 1017 strlcpy(ifan->ifan_name, ifp->if_xname, sizeof ifan->ifan_name);
984263bc 1018 ifan->ifan_what = what;
f23061d4 1019
590b8cd4
JH
1020 rts_input(m, 0);
1021}
f23061d4 1022
590b8cd4
JH
1023static int
1024resizewalkarg(struct walkarg *w, int len)
1025{
1026 void *newptr;
1027
1028 newptr = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
1029 if (newptr == NULL)
1030 return (ENOMEM);
1031 if (w->w_tmem != NULL)
1032 free(w->w_tmem, M_RTABLE);
1033 w->w_tmem = newptr;
1034 w->w_tmemsize = len;
1035 return (0);
1036}
984263bc
MD
1037
1038/*
1039 * This is used in dumping the kernel table via sysctl().
1040 */
1041int
590b8cd4 1042sysctl_dumpentry(struct radix_node *rn, void *vw)
984263bc 1043{
82ed7fc2
RG
1044 struct walkarg *w = vw;
1045 struct rtentry *rt = (struct rtentry *)rn;
590b8cd4
JH
1046 struct rt_addrinfo rtinfo;
1047 int error, msglen;
984263bc
MD
1048
1049 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
1050 return 0;
f23061d4 1051
590b8cd4
JH
1052 bzero(&rtinfo, sizeof(struct rt_addrinfo));
1053 rtinfo.rti_dst = rt_key(rt);
1054 rtinfo.rti_gateway = rt->rt_gateway;
1055 rtinfo.rti_netmask = rt_mask(rt);
1056 rtinfo.rti_genmask = rt->rt_genmask;
ef87f48d 1057 if (rt->rt_ifp != NULL) {
590b8cd4 1058 rtinfo.rti_ifpaddr =
ef87f48d 1059 TAILQ_FIRST(&rt->rt_ifp->if_addrhead)->ifa_addr;
590b8cd4 1060 rtinfo.rti_ifaaddr = rt->rt_ifa->ifa_addr;
984263bc 1061 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
590b8cd4 1062 rtinfo.rti_bcastaddr = rt->rt_ifa->ifa_dstaddr;
984263bc 1063 }
590b8cd4
JH
1064 msglen = rt_msgsize(RTM_GET, &rtinfo);
1065 if (w->w_tmemsize < msglen && resizewalkarg(w, msglen) != 0)
1066 return (ENOMEM);
1067 rt_msg_buffer(RTM_GET, &rtinfo, w->w_tmem, msglen);
1068 if (w->w_req != NULL) {
82ed7fc2 1069 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
984263bc
MD
1070
1071 rtm->rtm_flags = rt->rt_flags;
1072 rtm->rtm_use = rt->rt_use;
1073 rtm->rtm_rmx = rt->rt_rmx;
1074 rtm->rtm_index = rt->rt_ifp->if_index;
1075 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
590b8cd4
JH
1076 rtm->rtm_addrs = rtinfo.rti_addrs;
1077 error = SYSCTL_OUT(w->w_req, rtm, msglen);
984263bc
MD
1078 return (error);
1079 }
590b8cd4 1080 return (0);
984263bc
MD
1081}
1082
590b8cd4
JH
1083static int
1084sysctl_iflist(int af, struct walkarg *w)
984263bc 1085{
82ed7fc2
RG
1086 struct ifnet *ifp;
1087 struct ifaddr *ifa;
590b8cd4
JH
1088 struct rt_addrinfo rtinfo;
1089 int msglen, error;
984263bc 1090
590b8cd4 1091 bzero(&rtinfo, sizeof(struct rt_addrinfo));
984263bc
MD
1092 TAILQ_FOREACH(ifp, &ifnet, if_link) {
1093 if (w->w_arg && w->w_arg != ifp->if_index)
1094 continue;
1095 ifa = TAILQ_FIRST(&ifp->if_addrhead);
590b8cd4
JH
1096 rtinfo.rti_ifpaddr = ifa->ifa_addr;
1097 msglen = rt_msgsize(RTM_IFINFO, &rtinfo);
1098 if (w->w_tmemsize < msglen && resizewalkarg(w, msglen) != 0)
1099 return (ENOMEM);
1100 rt_msg_buffer(RTM_IFINFO, &rtinfo, w->w_tmem, msglen);
1101 rtinfo.rti_ifpaddr = NULL;
ef87f48d 1102 if (w->w_req != NULL && w->w_tmem != NULL) {
82ed7fc2 1103 struct if_msghdr *ifm;
984263bc
MD
1104
1105 ifm = (struct if_msghdr *)w->w_tmem;
1106 ifm->ifm_index = ifp->if_index;
1107 ifm->ifm_flags = (u_short)ifp->if_flags;
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) {
82ed7fc2 1129 struct ifa_msghdr *ifam;
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MD
1130
1131 ifam = (struct ifa_msghdr *)w->w_tmem;
1132 ifam->ifam_index = ifa->ifa_ifp->if_index;
1133 ifam->ifam_flags = ifa->ifa_flags;
1134 ifam->ifam_metric = ifa->ifa_metric;
590b8cd4
JH
1135 ifam->ifam_addrs = rtinfo.rti_addrs;
1136 error = SYSCTL_OUT(w->w_req, w->w_tmem, msglen);
984263bc
MD
1137 if (error)
1138 return (error);
1139 }
1140 }
590b8cd4
JH
1141 rtinfo.rti_netmask = NULL;
1142 rtinfo.rti_ifaaddr = NULL;
1143 rtinfo.rti_bcastaddr = NULL;
984263bc
MD
1144 }
1145 return (0);
1146}
1147
1148static int
1149sysctl_rtsock(SYSCTL_HANDLER_ARGS)
1150{
1151 int *name = (int *)arg1;
1152 u_int namelen = arg2;
82ed7fc2 1153 struct radix_node_head *rnh;
984263bc
MD
1154 int i, s, error = EINVAL;
1155 u_char af;
1156 struct walkarg w;
1157
1158 name ++;
1159 namelen--;
1160 if (req->newptr)
1161 return (EPERM);
1162 if (namelen != 3)
1163 return (EINVAL);
1164 af = name[0];
5fe66e68 1165 bzero(&w, sizeof w);
984263bc
MD
1166 w.w_op = name[1];
1167 w.w_arg = name[2];
1168 w.w_req = req;
1169
1170 s = splnet();
1171 switch (w.w_op) {
1172
1173 case NET_RT_DUMP:
1174 case NET_RT_FLAGS:
1175 for (i = 1; i <= AF_MAX; i++)
1176 if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
1177 (error = rnh->rnh_walktree(rnh,
f23061d4 1178 sysctl_dumpentry, &w)))
984263bc
MD
1179 break;
1180 break;
1181
1182 case NET_RT_IFLIST:
1183 error = sysctl_iflist(af, &w);
1184 }
1185 splx(s);
590b8cd4 1186 if (w.w_tmem != NULL)
984263bc
MD
1187 free(w.w_tmem, M_RTABLE);
1188 return (error);
1189}
1190
1191SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, "");
1192
1193/*
1194 * Definitions of protocols supported in the ROUTE domain.
1195 */
1196
1197extern struct domain routedomain; /* or at least forward */
1198
1199static struct protosw routesw[] = {
1200{ SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
1201 0, route_output, raw_ctlinput, 0,
9eeaa8a9 1202 cpu0_soport,
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MD
1203 raw_init, 0, 0, 0,
1204 &route_usrreqs
1205}
1206};
1207
1208static struct domain routedomain =
1209 { PF_ROUTE, "route", 0, 0, 0,
5fe66e68 1210 routesw, &routesw[(sizeof routesw)/(sizeof routesw[0])] };
984263bc
MD
1211
1212DOMAIN_SET(route);