busdma(9): Dup i386 busdma_machdep.c to vkernel
[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
984263bc
MD
33/*
34 * Copyright (c) 1988, 1991, 1993
35 * The Regents of the University of California. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by the University of
48 * California, Berkeley and its contributors.
49 * 4. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
64 *
65 * @(#)rtsock.c 8.7 (Berkeley) 10/12/95
66 * $FreeBSD: src/sys/net/rtsock.c,v 1.44.2.11 2002/12/04 14:05:41 ru Exp $
e3873585 67 * $DragonFly: src/sys/net/rtsock.c,v 1.45 2008/10/27 02:56:30 sephe Exp $
984263bc
MD
68 */
69
78812139
EN
70#include "opt_sctp.h"
71
984263bc
MD
72#include <sys/param.h>
73#include <sys/systm.h>
74#include <sys/kernel.h>
75#include <sys/sysctl.h>
76#include <sys/proc.h>
895c1f85 77#include <sys/priv.h>
984263bc
MD
78#include <sys/malloc.h>
79#include <sys/mbuf.h>
47e78ae8 80#include <sys/protosw.h>
984263bc
MD
81#include <sys/socket.h>
82#include <sys/socketvar.h>
83#include <sys/domain.h>
a49aa710 84#include <sys/thread2.h>
deffea2e 85
984263bc
MD
86#include <net/if.h>
87#include <net/route.h>
88#include <net/raw_cb.h>
47db7f9b 89#include <net/netmsg2.h>
984263bc 90
78812139
EN
91#ifdef SCTP
92extern void sctp_add_ip_address(struct ifaddr *ifa);
93extern void sctp_delete_ip_address(struct ifaddr *ifa);
94#endif /* SCTP */
95
984263bc
MD
96MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables");
97
f23061d4
JH
98static struct route_cb {
99 int ip_count;
100 int ip6_count;
101 int ipx_count;
102 int ns_count;
103 int any_count;
104} route_cb;
105
590b8cd4 106static const struct sockaddr route_src = { 2, PF_ROUTE, };
984263bc
MD
107
108struct walkarg {
109 int w_tmemsize;
110 int w_op, w_arg;
8e63efec 111 void *w_tmem;
984263bc
MD
112 struct sysctl_req *w_req;
113};
114
115static struct mbuf *
590b8cd4
JH
116 rt_msg_mbuf (int, struct rt_addrinfo *);
117static void rt_msg_buffer (int, struct rt_addrinfo *, void *buf, int len);
118static int rt_msgsize (int type, struct rt_addrinfo *rtinfo);
ef87f48d 119static int rt_xaddrs (char *, char *, struct rt_addrinfo *);
158abb01
RG
120static int sysctl_dumpentry (struct radix_node *rn, void *vw);
121static int sysctl_iflist (int af, struct walkarg *w);
deffea2e 122static int route_output(struct mbuf *, struct socket *, ...);
47e78ae8 123static void rt_setmetrics (u_long, struct rt_metrics *,
f23061d4 124 struct rt_metrics *);
984263bc 125
984263bc
MD
126/*
127 * It really doesn't make any sense at all for this code to share much
128 * with raw_usrreq.c, since its functionality is so restricted. XXX
129 */
130static int
131rts_abort(struct socket *so)
132{
a49aa710 133 int error;
f23061d4 134
a49aa710 135 crit_enter();
984263bc 136 error = raw_usrreqs.pru_abort(so);
a49aa710 137 crit_exit();
984263bc
MD
138 return error;
139}
140
141/* pru_accept is EOPNOTSUPP */
142
143static int
e4700d00 144rts_attach(struct socket *so, int proto, struct pru_attach_info *ai)
984263bc
MD
145{
146 struct rawcb *rp;
a49aa710 147 int error;
984263bc 148
ef87f48d 149 if (sotorawcb(so) != NULL)
984263bc 150 return EISCONN; /* XXX panic? */
f23061d4 151
efda3bd0 152 rp = kmalloc(sizeof *rp, M_PCB, M_WAITOK | M_ZERO);
984263bc
MD
153
154 /*
a49aa710 155 * The critical section is necessary to block protocols from sending
984263bc
MD
156 * error notifications (like RTM_REDIRECT or RTM_LOSING) while
157 * this PCB is extant but incompletely initialized.
158 * Probably we should try to do more of this work beforehand and
a49aa710 159 * eliminate the critical section.
984263bc 160 */
a49aa710 161 crit_enter();
ef87f48d 162 so->so_pcb = rp;
e4700d00 163 error = raw_attach(so, proto, ai->sb_rlimit);
984263bc
MD
164 rp = sotorawcb(so);
165 if (error) {
a49aa710 166 crit_exit();
efda3bd0 167 kfree(rp, M_PCB);
984263bc
MD
168 return error;
169 }
170 switch(rp->rcb_proto.sp_protocol) {
171 case AF_INET:
172 route_cb.ip_count++;
173 break;
174 case AF_INET6:
175 route_cb.ip6_count++;
176 break;
177 case AF_IPX:
178 route_cb.ipx_count++;
179 break;
180 case AF_NS:
181 route_cb.ns_count++;
182 break;
183 }
184 rp->rcb_faddr = &route_src;
185 route_cb.any_count++;
186 soisconnected(so);
187 so->so_options |= SO_USELOOPBACK;
a49aa710 188 crit_exit();
984263bc
MD
189 return 0;
190}
191
192static int
dadab5e9 193rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
984263bc 194{
a49aa710 195 int error;
f23061d4 196
a49aa710 197 crit_enter();
dadab5e9 198 error = raw_usrreqs.pru_bind(so, nam, td); /* xxx just EINVAL */
a49aa710 199 crit_exit();
984263bc
MD
200 return error;
201}
202
203static int
dadab5e9 204rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
984263bc 205{
a49aa710 206 int error;
f23061d4 207
a49aa710 208 crit_enter();
dadab5e9 209 error = raw_usrreqs.pru_connect(so, nam, td); /* XXX just EINVAL */
a49aa710 210 crit_exit();
984263bc
MD
211 return error;
212}
213
214/* pru_connect2 is EOPNOTSUPP */
215/* pru_control is EOPNOTSUPP */
216
217static int
218rts_detach(struct socket *so)
219{
220 struct rawcb *rp = sotorawcb(so);
a49aa710 221 int error;
984263bc 222
a49aa710 223 crit_enter();
ef87f48d 224 if (rp != NULL) {
984263bc
MD
225 switch(rp->rcb_proto.sp_protocol) {
226 case AF_INET:
227 route_cb.ip_count--;
228 break;
229 case AF_INET6:
230 route_cb.ip6_count--;
231 break;
232 case AF_IPX:
233 route_cb.ipx_count--;
234 break;
235 case AF_NS:
236 route_cb.ns_count--;
237 break;
238 }
239 route_cb.any_count--;
240 }
241 error = raw_usrreqs.pru_detach(so);
a49aa710 242 crit_exit();
984263bc
MD
243 return error;
244}
245
246static int
247rts_disconnect(struct socket *so)
248{
a49aa710 249 int error;
f23061d4 250
a49aa710 251 crit_enter();
984263bc 252 error = raw_usrreqs.pru_disconnect(so);
a49aa710 253 crit_exit();
984263bc
MD
254 return error;
255}
256
257/* pru_listen is EOPNOTSUPP */
258
259static int
260rts_peeraddr(struct socket *so, struct sockaddr **nam)
261{
a49aa710 262 int error;
f23061d4 263
a49aa710 264 crit_enter();
984263bc 265 error = raw_usrreqs.pru_peeraddr(so, nam);
a49aa710 266 crit_exit();
984263bc
MD
267 return error;
268}
269
270/* pru_rcvd is EOPNOTSUPP */
271/* pru_rcvoob is EOPNOTSUPP */
272
273static int
274rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
dadab5e9 275 struct mbuf *control, struct thread *td)
984263bc 276{
a49aa710 277 int error;
f23061d4 278
a49aa710 279 crit_enter();
dadab5e9 280 error = raw_usrreqs.pru_send(so, flags, m, nam, control, td);
a49aa710 281 crit_exit();
984263bc
MD
282 return error;
283}
284
285/* pru_sense is null */
286
287static int
288rts_shutdown(struct socket *so)
289{
a49aa710 290 int error;
f23061d4 291
a49aa710 292 crit_enter();
984263bc 293 error = raw_usrreqs.pru_shutdown(so);
a49aa710 294 crit_exit();
984263bc
MD
295 return error;
296}
297
298static int
299rts_sockaddr(struct socket *so, struct sockaddr **nam)
300{
a49aa710 301 int error;
f23061d4 302
a49aa710 303 crit_enter();
984263bc 304 error = raw_usrreqs.pru_sockaddr(so, nam);
a49aa710 305 crit_exit();
984263bc
MD
306 return error;
307}
308
309static struct pr_usrreqs route_usrreqs = {
fa5e758c
MD
310 .pru_abort = rts_abort,
311 .pru_accept = pru_accept_notsupp,
312 .pru_attach = rts_attach,
313 .pru_bind = rts_bind,
314 .pru_connect = rts_connect,
315 .pru_connect2 = pru_connect2_notsupp,
316 .pru_control = pru_control_notsupp,
317 .pru_detach = rts_detach,
318 .pru_disconnect = rts_disconnect,
319 .pru_listen = pru_listen_notsupp,
320 .pru_peeraddr = rts_peeraddr,
321 .pru_rcvd = pru_rcvd_notsupp,
322 .pru_rcvoob = pru_rcvoob_notsupp,
323 .pru_send = rts_send,
324 .pru_sense = pru_sense_null,
325 .pru_shutdown = rts_shutdown,
326 .pru_sockaddr = rts_sockaddr,
327 .pru_sosend = sosend,
328 .pru_soreceive = soreceive,
329 .pru_sopoll = sopoll
984263bc
MD
330};
331
590b8cd4
JH
332static __inline sa_family_t
333familyof(struct sockaddr *sa)
334{
335 return (sa != NULL ? sa->sa_family : 0);
336}
337
47db7f9b
MD
338/*
339 * Routing socket input function. The packet must be serialized onto cpu 0.
340 * We use the cpu0_soport() netisr processing loop to handle it.
341 *
342 * This looks messy but it means that anyone, including interrupt code,
343 * can send a message to the routing socket.
344 */
590b8cd4 345static void
47db7f9b 346rts_input_handler(struct netmsg *msg)
590b8cd4
JH
347{
348 static const struct sockaddr route_dst = { 2, PF_ROUTE, };
47db7f9b
MD
349 struct sockproto route_proto;
350 struct netmsg_packet *pmsg;
351 struct mbuf *m;
352 sa_family_t family;
353
354 pmsg = (void *)msg;
355 m = pmsg->nm_packet;
356 family = pmsg->nm_netmsg.nm_lmsg.u.ms_result;
357 route_proto.sp_family = PF_ROUTE;
358 route_proto.sp_protocol = family;
590b8cd4
JH
359
360 raw_input(m, &route_proto, &route_src, &route_dst);
361}
362
47db7f9b
MD
363static void
364rts_input(struct mbuf *m, sa_family_t family)
365{
366 struct netmsg_packet *pmsg;
367 lwkt_port_t port;
368
934c6849 369 port = cpu0_soport(NULL, NULL, NULL, 0);
47db7f9b
MD
370 pmsg = &m->m_hdr.mh_netmsg;
371 netmsg_init(&pmsg->nm_netmsg, &netisr_apanic_rport,
372 0, rts_input_handler);
373 pmsg->nm_packet = m;
374 pmsg->nm_netmsg.nm_lmsg.u.ms_result = family;
375 lwkt_sendmsg(port, &pmsg->nm_netmsg.nm_lmsg);
376}
377
590b8cd4
JH
378static void *
379reallocbuf(void *ptr, size_t len, size_t olen)
380{
381 void *newptr;
382
efda3bd0 383 newptr = kmalloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
590b8cd4
JH
384 if (newptr == NULL)
385 return NULL;
386 bcopy(ptr, newptr, olen);
efda3bd0 387 kfree(ptr, M_RTABLE);
590b8cd4
JH
388 return (newptr);
389}
390
8e63efec
JH
391/*
392 * Internal helper routine for route_output().
393 */
590b8cd4
JH
394static int
395fillrtmsg(struct rt_msghdr **prtm, struct rtentry *rt,
396 struct rt_addrinfo *rtinfo)
397{
398 int msglen;
399 struct rt_msghdr *rtm = *prtm;
400
401 /* Fill in rt_addrinfo for call to rt_msg_buffer(). */
402 rtinfo->rti_dst = rt_key(rt);
403 rtinfo->rti_gateway = rt->rt_gateway;
404 rtinfo->rti_netmask = rt_mask(rt); /* might be NULL */
405 rtinfo->rti_genmask = rt->rt_genmask; /* might be NULL */
406 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
407 if (rt->rt_ifp != NULL) {
408 rtinfo->rti_ifpaddr =
b2632176
SZ
409 TAILQ_FIRST(&rt->rt_ifp->if_addrheads[mycpuid])
410 ->ifa->ifa_addr;
590b8cd4
JH
411 rtinfo->rti_ifaaddr = rt->rt_ifa->ifa_addr;
412 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
413 rtinfo->rti_bcastaddr = rt->rt_ifa->ifa_dstaddr;
414 rtm->rtm_index = rt->rt_ifp->if_index;
415 } else {
416 rtinfo->rti_ifpaddr = NULL;
417 rtinfo->rti_ifaaddr = NULL;
418 }
419 }
420
421 msglen = rt_msgsize(rtm->rtm_type, rtinfo);
422 if (rtm->rtm_msglen < msglen) {
423 rtm = reallocbuf(rtm, msglen, rtm->rtm_msglen);
424 if (rtm == NULL)
425 return (ENOBUFS);
426 *prtm = rtm;
427 }
428 rt_msg_buffer(rtm->rtm_type, rtinfo, rtm, msglen);
429
430 rtm->rtm_flags = rt->rt_flags;
431 rtm->rtm_rmx = rt->rt_rmx;
432 rtm->rtm_addrs = rtinfo->rti_addrs;
433
434 return (0);
435}
436
ecdefdda
MD
437static void route_output_add_callback(int, int, struct rt_addrinfo *,
438 struct rtentry *, void *);
439static void route_output_delete_callback(int, int, struct rt_addrinfo *,
440 struct rtentry *, void *);
441static void route_output_change_callback(int, int, struct rt_addrinfo *,
442 struct rtentry *, void *);
443static void route_output_lock_callback(int, int, struct rt_addrinfo *,
444 struct rtentry *, void *);
445
984263bc
MD
446/*ARGSUSED*/
447static int
deffea2e 448route_output(struct mbuf *m, struct socket *so, ...)
984263bc 449{
2e9572df 450 struct rt_msghdr *rtm = NULL;
ecdefdda 451 struct rtentry *rt;
984263bc 452 struct radix_node_head *rnh;
f23061d4 453 struct rawcb *rp = NULL;
deffea2e 454 struct pr_output_info *oi;
590b8cd4 455 struct rt_addrinfo rtinfo;
ef87f48d 456 int len, error = 0;
deffea2e
JS
457 __va_list ap;
458
459 __va_start(ap, so);
460 oi = __va_arg(ap, struct pr_output_info *);
461 __va_end(ap);
984263bc 462
ef87f48d 463#define gotoerr(e) { error = e; goto flush;}
590b8cd4
JH
464
465 if (m == NULL ||
466 (m->m_len < sizeof(long) &&
467 (m = m_pullup(m, sizeof(long))) == NULL))
984263bc 468 return (ENOBUFS);
ef87f48d 469 if (!(m->m_flags & M_PKTHDR))
984263bc
MD
470 panic("route_output");
471 len = m->m_pkthdr.len;
590b8cd4 472 if (len < sizeof(struct rt_msghdr) ||
984263bc 473 len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
590b8cd4 474 rtinfo.rti_dst = NULL;
ef87f48d 475 gotoerr(EINVAL);
984263bc 476 }
efda3bd0 477 rtm = kmalloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
ef87f48d 478 if (rtm == NULL) {
590b8cd4 479 rtinfo.rti_dst = NULL;
ef87f48d 480 gotoerr(ENOBUFS);
984263bc
MD
481 }
482 m_copydata(m, 0, len, (caddr_t)rtm);
483 if (rtm->rtm_version != RTM_VERSION) {
590b8cd4 484 rtinfo.rti_dst = NULL;
ef87f48d 485 gotoerr(EPROTONOSUPPORT);
984263bc 486 }
47e78ae8 487 rtm->rtm_pid = oi->p_pid;
590b8cd4
JH
488 bzero(&rtinfo, sizeof(struct rt_addrinfo));
489 rtinfo.rti_addrs = rtm->rtm_addrs;
490 if (rt_xaddrs((char *)(rtm + 1), (char *)rtm + len, &rtinfo) != 0) {
491 rtinfo.rti_dst = NULL;
ef87f48d 492 gotoerr(EINVAL);
984263bc 493 }
590b8cd4
JH
494 rtinfo.rti_flags = rtm->rtm_flags;
495 if (rtinfo.rti_dst == NULL || rtinfo.rti_dst->sa_family >= AF_MAX ||
496 (rtinfo.rti_gateway && rtinfo.rti_gateway->sa_family >= AF_MAX))
ef87f48d
JH
497 gotoerr(EINVAL);
498
590b8cd4
JH
499 if (rtinfo.rti_genmask != NULL) {
500 struct radix_node *n;
ef87f48d 501
590b8cd4
JH
502#define clen(s) (*(u_char *)(s))
503 n = rn_addmask((char *)rtinfo.rti_genmask, TRUE, 1);
504 if (n != NULL &&
505 rtinfo.rti_genmask->sa_len >= clen(n->rn_key) &&
506 bcmp((char *)rtinfo.rti_genmask + 1,
507 (char *)n->rn_key + 1, clen(n->rn_key) - 1) == 0)
508 rtinfo.rti_genmask = (struct sockaddr *)n->rn_key;
984263bc 509 else
ef87f48d 510 gotoerr(ENOBUFS);
984263bc
MD
511 }
512
513 /*
514 * Verify that the caller has the appropriate privilege; RTM_GET
515 * is the only operation the non-superuser is allowed.
516 */
895c1f85 517 if (rtm->rtm_type != RTM_GET && priv_check_cred(so->so_cred, PRIV_ROOT, 0) != 0)
ef87f48d 518 gotoerr(EPERM);
984263bc
MD
519
520 switch (rtm->rtm_type) {
984263bc 521 case RTM_ADD:
ecdefdda
MD
522 if (rtinfo.rti_gateway == NULL) {
523 error = EINVAL;
524 } else {
525 error = rtrequest1_global(RTM_ADD, &rtinfo,
526 route_output_add_callback, rtm);
984263bc
MD
527 }
528 break;
984263bc 529 case RTM_DELETE:
ecdefdda
MD
530 /*
531 * note: &rtm passed as argument so 'rtm' can be replaced.
532 */
533 error = rtrequest1_global(RTM_DELETE, &rtinfo,
534 route_output_delete_callback, &rtm);
984263bc 535 break;
984263bc 536 case RTM_GET:
ecdefdda
MD
537 rnh = rt_tables[mycpuid][rtinfo.rti_dst->sa_family];
538 if (rnh == NULL) {
539 error = EAFNOSUPPORT;
540 break;
541 }
590b8cd4
JH
542 rt = (struct rtentry *)
543 rnh->rnh_lookup((char *)rtinfo.rti_dst,
544 (char *)rtinfo.rti_netmask, rnh);
ecdefdda
MD
545 if (rt == NULL) {
546 error = ESRCH;
984263bc
MD
547 break;
548 }
ecdefdda
MD
549 rt->rt_refcnt++;
550 if (fillrtmsg(&rtm, rt, &rtinfo) != 0)
551 gotoerr(ENOBUFS);
552 --rt->rt_refcnt;
553 break;
554 case RTM_CHANGE:
555 error = rtrequest1_global(RTM_GET, &rtinfo,
556 route_output_change_callback, rtm);
557 break;
558 case RTM_LOCK:
559 error = rtrequest1_global(RTM_GET, &rtinfo,
560 route_output_lock_callback, rtm);
590b8cd4 561 break;
984263bc 562 default:
ecdefdda
MD
563 error = EOPNOTSUPP;
564 break;
984263bc
MD
565 }
566
567flush:
590b8cd4
JH
568 if (rtm != NULL) {
569 if (error != 0)
984263bc
MD
570 rtm->rtm_errno = error;
571 else
572 rtm->rtm_flags |= RTF_DONE;
573 }
ecdefdda 574
984263bc
MD
575 /*
576 * Check to see if we don't want our own messages.
577 */
ef87f48d 578 if (!(so->so_options & SO_USELOOPBACK)) {
984263bc 579 if (route_cb.any_count <= 1) {
590b8cd4 580 if (rtm != NULL)
efda3bd0 581 kfree(rtm, M_RTABLE);
984263bc
MD
582 m_freem(m);
583 return (error);
584 }
585 /* There is another listener, so construct message */
586 rp = sotorawcb(so);
587 }
590b8cd4 588 if (rtm != NULL) {
984263bc
MD
589 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
590 if (m->m_pkthdr.len < rtm->rtm_msglen) {
591 m_freem(m);
592 m = NULL;
593 } else if (m->m_pkthdr.len > rtm->rtm_msglen)
594 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
efda3bd0 595 kfree(rtm, M_RTABLE);
984263bc 596 }
ef87f48d 597 if (rp != NULL)
984263bc 598 rp->rcb_proto.sp_family = 0; /* Avoid us */
ef87f48d 599 if (m != NULL)
590b8cd4 600 rts_input(m, familyof(rtinfo.rti_dst));
ef87f48d 601 if (rp != NULL)
984263bc 602 rp->rcb_proto.sp_family = PF_ROUTE;
984263bc
MD
603 return (error);
604}
605
ecdefdda
MD
606static void
607route_output_add_callback(int cmd, int error, struct rt_addrinfo *rtinfo,
608 struct rtentry *rt, void *arg)
609{
610 struct rt_msghdr *rtm = arg;
611
612 if (error == 0 && rt != NULL) {
613 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
614 &rt->rt_rmx);
615 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
616 rt->rt_rmx.rmx_locks |=
617 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
618 rt->rt_genmask = rtinfo->rti_genmask;
619 }
620}
621
622static void
623route_output_delete_callback(int cmd, int error, struct rt_addrinfo *rtinfo,
624 struct rtentry *rt, void *arg)
625{
626 struct rt_msghdr **rtm = arg;
627
628 if (error == 0 && rt) {
629 ++rt->rt_refcnt;
630 if (fillrtmsg(rtm, rt, rtinfo) != 0) {
631 error = ENOBUFS;
632 /* XXX no way to return the error */
633 }
634 --rt->rt_refcnt;
635 }
636}
637
638static void
639route_output_change_callback(int cmd, int error, struct rt_addrinfo *rtinfo,
640 struct rtentry *rt, void *arg)
641{
642 struct rt_msghdr *rtm = arg;
643 struct ifaddr *ifa;
644
645 if (error)
646 goto done;
647
648 /*
649 * new gateway could require new ifaddr, ifp;
650 * flags may also be different; ifp may be specified
651 * by ll sockaddr when protocol address is ambiguous
652 */
653 if (((rt->rt_flags & RTF_GATEWAY) && rtinfo->rti_gateway != NULL) ||
654 rtinfo->rti_ifpaddr != NULL || (rtinfo->rti_ifaaddr != NULL &&
655 sa_equal(rtinfo->rti_ifaaddr, rt->rt_ifa->ifa_addr))
656 ) {
657 error = rt_getifa(rtinfo);
658 if (error != 0)
659 goto done;
660 }
661 if (rtinfo->rti_gateway != NULL) {
662 error = rt_setgate(rt, rt_key(rt), rtinfo->rti_gateway);
663 if (error != 0)
664 goto done;
665 }
666 if ((ifa = rtinfo->rti_ifa) != NULL) {
667 struct ifaddr *oifa = rt->rt_ifa;
668
669 if (oifa != ifa) {
670 if (oifa && oifa->ifa_rtrequest)
671 oifa->ifa_rtrequest(RTM_DELETE, rt, rtinfo);
672 IFAFREE(rt->rt_ifa);
673 IFAREF(ifa);
674 rt->rt_ifa = ifa;
675 rt->rt_ifp = rtinfo->rti_ifp;
676 }
677 }
678 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, &rt->rt_rmx);
679 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
680 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, rtinfo);
681 if (rtinfo->rti_genmask != NULL)
682 rt->rt_genmask = rtinfo->rti_genmask;
683done:
684 /* XXX no way to return error */
685 ;
686}
687
688static void
689route_output_lock_callback(int cmd, int error, struct rt_addrinfo *rtinfo,
690 struct rtentry *rt, void *arg)
691{
692 struct rt_msghdr *rtm = arg;
693
694 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
695 rt->rt_rmx.rmx_locks |=
696 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
697}
698
984263bc 699static void
ef87f48d 700rt_setmetrics(u_long which, struct rt_metrics *in, struct rt_metrics *out)
984263bc 701{
2e9572df
JH
702#define setmetric(flag, elt) if (which & (flag)) out->elt = in->elt;
703 setmetric(RTV_RPIPE, rmx_recvpipe);
704 setmetric(RTV_SPIPE, rmx_sendpipe);
705 setmetric(RTV_SSTHRESH, rmx_ssthresh);
706 setmetric(RTV_RTT, rmx_rtt);
707 setmetric(RTV_RTTVAR, rmx_rttvar);
708 setmetric(RTV_HOPCOUNT, rmx_hopcount);
709 setmetric(RTV_MTU, rmx_mtu);
710 setmetric(RTV_EXPIRE, rmx_expire);
711#undef setmetric
984263bc
MD
712}
713
714#define ROUNDUP(a) \
715 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
984263bc 716
984263bc
MD
717/*
718 * Extract the addresses of the passed sockaddrs.
719 * Do a little sanity checking so as to avoid bad memory references.
720 * This data is derived straight from userland.
721 */
722static int
ef87f48d 723rt_xaddrs(char *cp, char *cplim, struct rt_addrinfo *rtinfo)
984263bc 724{
82ed7fc2
RG
725 struct sockaddr *sa;
726 int i;
984263bc
MD
727
728 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
729 if ((rtinfo->rti_addrs & (1 << i)) == 0)
730 continue;
731 sa = (struct sockaddr *)cp;
732 /*
733 * It won't fit.
734 */
0c3c561c 735 if ((cp + sa->sa_len) > cplim) {
984263bc
MD
736 return (EINVAL);
737 }
738
739 /*
ef87f48d 740 * There are no more... Quit now.
984263bc 741 * If there are more bits, they are in error.
ef87f48d 742 * I've seen this. route(1) can evidently generate these.
984263bc 743 * This causes kernel to core dump.
ef87f48d 744 * For compatibility, if we see this, point to a safe address.
984263bc
MD
745 */
746 if (sa->sa_len == 0) {
590b8cd4
JH
747 static struct sockaddr sa_zero = {
748 sizeof sa_zero, AF_INET,
749 };
750
984263bc 751 rtinfo->rti_info[i] = &sa_zero;
9b42cabe 752 kprintf("rtsock: received more addr bits than sockaddrs.\n");
984263bc
MD
753 return (0); /* should be EINVAL but for compat */
754 }
755
ef87f48d 756 /* Accept the sockaddr. */
984263bc 757 rtinfo->rti_info[i] = sa;
590b8cd4 758 cp += ROUNDUP(sa->sa_len);
984263bc
MD
759 }
760 return (0);
761}
762
590b8cd4
JH
763static int
764rt_msghdrsize(int type)
984263bc 765{
984263bc 766 switch (type) {
984263bc
MD
767 case RTM_DELADDR:
768 case RTM_NEWADDR:
590b8cd4 769 return sizeof(struct ifa_msghdr);
984263bc
MD
770 case RTM_DELMADDR:
771 case RTM_NEWMADDR:
590b8cd4 772 return sizeof(struct ifma_msghdr);
984263bc 773 case RTM_IFINFO:
590b8cd4 774 return sizeof(struct if_msghdr);
984263bc 775 case RTM_IFANNOUNCE:
841ab66c 776 case RTM_IEEE80211:
590b8cd4 777 return sizeof(struct if_announcemsghdr);
984263bc 778 default:
590b8cd4 779 return sizeof(struct rt_msghdr);
984263bc 780 }
590b8cd4
JH
781}
782
783static int
784rt_msgsize(int type, struct rt_addrinfo *rtinfo)
785{
786 int len, i;
787
788 len = rt_msghdrsize(type);
789 for (i = 0; i < RTAX_MAX; i++) {
790 if (rtinfo->rti_info[i] != NULL)
791 len += ROUNDUP(rtinfo->rti_info[i]->sa_len);
984263bc 792 }
590b8cd4
JH
793 len = ALIGN(len);
794 return len;
795}
796
797/*
798 * Build a routing message in a buffer.
799 * Copy the addresses in the rtinfo->rti_info[] sockaddr array
800 * to the end of the buffer after the message header.
801 *
802 * Set the rtinfo->rti_addrs bitmask of addresses present in rtinfo->rti_info[].
803 * This side-effect can be avoided if we reorder the addrs bitmask field in all
804 * the route messages to line up so we can set it here instead of back in the
805 * calling routine.
806 */
807static void
808rt_msg_buffer(int type, struct rt_addrinfo *rtinfo, void *buf, int msglen)
809{
810 struct rt_msghdr *rtm;
811 char *cp;
812 int dlen, i;
813
814 rtm = (struct rt_msghdr *) buf;
815 rtm->rtm_version = RTM_VERSION;
816 rtm->rtm_type = type;
817 rtm->rtm_msglen = msglen;
818
819 cp = (char *)buf + rt_msghdrsize(type);
820 rtinfo->rti_addrs = 0;
984263bc 821 for (i = 0; i < RTAX_MAX; i++) {
590b8cd4
JH
822 struct sockaddr *sa;
823
984263bc
MD
824 if ((sa = rtinfo->rti_info[i]) == NULL)
825 continue;
826 rtinfo->rti_addrs |= (1 << i);
827 dlen = ROUNDUP(sa->sa_len);
590b8cd4
JH
828 bcopy(sa, cp, dlen);
829 cp += dlen;
984263bc 830 }
984263bc
MD
831}
832
590b8cd4
JH
833/*
834 * Build a routing message in a mbuf chain.
835 * Copy the addresses in the rtinfo->rti_info[] sockaddr array
836 * to the end of the mbuf after the message header.
837 *
838 * Set the rtinfo->rti_addrs bitmask of addresses present in rtinfo->rti_info[].
839 * This side-effect can be avoided if we reorder the addrs bitmask field in all
840 * the route messages to line up so we can set it here instead of back in the
841 * calling routine.
842 */
843static struct mbuf *
844rt_msg_mbuf(int type, struct rt_addrinfo *rtinfo)
984263bc 845{
590b8cd4
JH
846 struct mbuf *m;
847 struct rt_msghdr *rtm;
848 int hlen, len;
82ed7fc2 849 int i;
984263bc 850
590b8cd4
JH
851 hlen = rt_msghdrsize(type);
852 KASSERT(hlen <= MCLBYTES, ("rt_msg_mbuf: hlen %d doesn't fit", hlen));
984263bc 853
50503f0f 854 m = m_getl(hlen, MB_DONTWAIT, MT_DATA, M_PKTHDR, NULL);
590b8cd4
JH
855 if (m == NULL)
856 return (NULL);
e9fa4b60 857 mbuftrackid(m, 32);
590b8cd4
JH
858 m->m_pkthdr.len = m->m_len = hlen;
859 m->m_pkthdr.rcvif = NULL;
860 rtinfo->rti_addrs = 0;
861 len = hlen;
984263bc 862 for (i = 0; i < RTAX_MAX; i++) {
82ed7fc2 863 struct sockaddr *sa;
590b8cd4 864 int dlen;
984263bc 865
ef87f48d 866 if ((sa = rtinfo->rti_info[i]) == NULL)
984263bc
MD
867 continue;
868 rtinfo->rti_addrs |= (1 << i);
869 dlen = ROUNDUP(sa->sa_len);
590b8cd4 870 m_copyback(m, len, dlen, (caddr_t)sa); /* can grow mbuf chain */
984263bc
MD
871 len += dlen;
872 }
590b8cd4
JH
873 if (m->m_pkthdr.len != len) { /* one of the m_copyback() calls failed */
874 m_freem(m);
875 return (NULL);
984263bc 876 }
590b8cd4
JH
877 rtm = mtod(m, struct rt_msghdr *);
878 bzero(rtm, hlen);
879 rtm->rtm_msglen = len;
880 rtm->rtm_version = RTM_VERSION;
881 rtm->rtm_type = type;
882 return (m);
984263bc
MD
883}
884
885/*
886 * This routine is called to generate a message from the routing
f23061d4 887 * socket indicating that a redirect has occurred, a routing lookup
984263bc
MD
888 * has failed, or that a protocol has detected timeouts to a particular
889 * destination.
890 */
891void
f23061d4 892rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error)
984263bc 893{
0c3c561c 894 struct sockaddr *dst = rtinfo->rti_info[RTAX_DST];
82ed7fc2
RG
895 struct rt_msghdr *rtm;
896 struct mbuf *m;
984263bc
MD
897
898 if (route_cb.any_count == 0)
899 return;
590b8cd4 900 m = rt_msg_mbuf(type, rtinfo);
ef87f48d 901 if (m == NULL)
984263bc
MD
902 return;
903 rtm = mtod(m, struct rt_msghdr *);
904 rtm->rtm_flags = RTF_DONE | flags;
905 rtm->rtm_errno = error;
906 rtm->rtm_addrs = rtinfo->rti_addrs;
590b8cd4 907 rts_input(m, familyof(dst));
984263bc
MD
908}
909
f3ed2586
JH
910void
911rt_dstmsg(int type, struct sockaddr *dst, int error)
912{
913 struct rt_msghdr *rtm;
914 struct rt_addrinfo addrs;
915 struct mbuf *m;
916
917 if (route_cb.any_count == 0)
918 return;
919 bzero(&addrs, sizeof(struct rt_addrinfo));
920 addrs.rti_info[RTAX_DST] = dst;
590b8cd4 921 m = rt_msg_mbuf(type, &addrs);
f3ed2586
JH
922 if (m == NULL)
923 return;
924 rtm = mtod(m, struct rt_msghdr *);
925 rtm->rtm_flags = RTF_DONE;
926 rtm->rtm_errno = error;
927 rtm->rtm_addrs = addrs.rti_addrs;
590b8cd4 928 rts_input(m, familyof(dst));
f3ed2586
JH
929}
930
984263bc
MD
931/*
932 * This routine is called to generate a message from the routing
933 * socket indicating that the status of a network interface has changed.
934 */
935void
0c3c561c 936rt_ifmsg(struct ifnet *ifp)
984263bc 937{
82ed7fc2 938 struct if_msghdr *ifm;
984263bc 939 struct mbuf *m;
590b8cd4 940 struct rt_addrinfo rtinfo;
984263bc
MD
941
942 if (route_cb.any_count == 0)
943 return;
590b8cd4
JH
944 bzero(&rtinfo, sizeof(struct rt_addrinfo));
945 m = rt_msg_mbuf(RTM_IFINFO, &rtinfo);
ef87f48d 946 if (m == NULL)
984263bc
MD
947 return;
948 ifm = mtod(m, struct if_msghdr *);
949 ifm->ifm_index = ifp->if_index;
9c095379 950 ifm->ifm_flags = ifp->if_flags;
984263bc 951 ifm->ifm_data = ifp->if_data;
590b8cd4
JH
952 ifm->ifm_addrs = 0;
953 rts_input(m, 0);
984263bc
MD
954}
955
372316d9
JH
956static void
957rt_ifamsg(int cmd, struct ifaddr *ifa)
958{
959 struct ifa_msghdr *ifam;
590b8cd4 960 struct rt_addrinfo rtinfo;
372316d9 961 struct mbuf *m;
372316d9
JH
962 struct ifnet *ifp = ifa->ifa_ifp;
963
590b8cd4
JH
964 bzero(&rtinfo, sizeof(struct rt_addrinfo));
965 rtinfo.rti_ifaaddr = ifa->ifa_addr;
b2632176
SZ
966 rtinfo.rti_ifpaddr =
967 TAILQ_FIRST(&ifp->if_addrheads[mycpuid])->ifa->ifa_addr;
590b8cd4
JH
968 rtinfo.rti_netmask = ifa->ifa_netmask;
969 rtinfo.rti_bcastaddr = ifa->ifa_dstaddr;
f23061d4 970
590b8cd4 971 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 972 if (m == NULL)
372316d9 973 return;
f23061d4 974
372316d9
JH
975 ifam = mtod(m, struct ifa_msghdr *);
976 ifam->ifam_index = ifp->if_index;
977 ifam->ifam_metric = ifa->ifa_metric;
978 ifam->ifam_flags = ifa->ifa_flags;
590b8cd4 979 ifam->ifam_addrs = rtinfo.rti_addrs;
f23061d4 980
590b8cd4 981 rts_input(m, familyof(ifa->ifa_addr));
372316d9
JH
982}
983
f3ed2586
JH
984void
985rt_rtmsg(int cmd, struct rtentry *rt, struct ifnet *ifp, int error)
372316d9
JH
986{
987 struct rt_msghdr *rtm;
590b8cd4 988 struct rt_addrinfo rtinfo;
372316d9 989 struct mbuf *m;
f3ed2586 990 struct sockaddr *dst;
372316d9
JH
991
992 if (rt == NULL)
993 return;
f23061d4 994
590b8cd4
JH
995 bzero(&rtinfo, sizeof(struct rt_addrinfo));
996 rtinfo.rti_dst = dst = rt_key(rt);
997 rtinfo.rti_gateway = rt->rt_gateway;
998 rtinfo.rti_netmask = rt_mask(rt);
b2632176
SZ
999 if (ifp != NULL) {
1000 rtinfo.rti_ifpaddr =
1001 TAILQ_FIRST(&ifp->if_addrheads[mycpuid])->ifa->ifa_addr;
1002 }
590b8cd4 1003 rtinfo.rti_ifaaddr = rt->rt_ifa->ifa_addr;
f23061d4 1004
590b8cd4 1005 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 1006 if (m == NULL)
372316d9 1007 return;
f23061d4 1008
372316d9 1009 rtm = mtod(m, struct rt_msghdr *);
f3ed2586
JH
1010 if (ifp != NULL)
1011 rtm->rtm_index = ifp->if_index;
372316d9
JH
1012 rtm->rtm_flags |= rt->rt_flags;
1013 rtm->rtm_errno = error;
590b8cd4 1014 rtm->rtm_addrs = rtinfo.rti_addrs;
f23061d4 1015
590b8cd4 1016 rts_input(m, familyof(dst));
372316d9
JH
1017}
1018
984263bc
MD
1019/*
1020 * This is called to generate messages from the routing socket
1021 * indicating a network interface has had addresses associated with it.
1022 * if we ever reverse the logic and replace messages TO the routing
1023 * socket indicate a request to configure interfaces, then it will
1024 * be unnecessary as the routing socket will automatically generate
1025 * copies of it.
1026 */
1027void
0c3c561c 1028rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
984263bc 1029{
78812139
EN
1030#ifdef SCTP
1031 /*
1032 * notify the SCTP stack
1033 * this will only get called when an address is added/deleted
1034 * XXX pass the ifaddr struct instead if ifa->ifa_addr...
1035 */
1036 if (cmd == RTM_ADD)
1037 sctp_add_ip_address(ifa);
1038 else if (cmd == RTM_DELETE)
1039 sctp_delete_ip_address(ifa);
1040#endif /* SCTP */
1041
984263bc
MD
1042 if (route_cb.any_count == 0)
1043 return;
984263bc 1044
372316d9
JH
1045 if (cmd == RTM_ADD) {
1046 rt_ifamsg(RTM_NEWADDR, ifa);
f3ed2586 1047 rt_rtmsg(RTM_ADD, rt, ifa->ifa_ifp, error);
372316d9
JH
1048 } else {
1049 KASSERT((cmd == RTM_DELETE), ("unknown cmd %d", cmd));
f3ed2586 1050 rt_rtmsg(RTM_DELETE, rt, ifa->ifa_ifp, error);
372316d9 1051 rt_ifamsg(RTM_DELADDR, ifa);
984263bc
MD
1052 }
1053}
1054
1055/*
1056 * This is the analogue to the rt_newaddrmsg which performs the same
1057 * function but for multicast group memberhips. This is easier since
1058 * there is no route state to worry about.
1059 */
1060void
0c3c561c 1061rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma)
984263bc 1062{
590b8cd4 1063 struct rt_addrinfo rtinfo;
ef87f48d 1064 struct mbuf *m = NULL;
984263bc
MD
1065 struct ifnet *ifp = ifma->ifma_ifp;
1066 struct ifma_msghdr *ifmam;
1067
1068 if (route_cb.any_count == 0)
1069 return;
1070
590b8cd4
JH
1071 bzero(&rtinfo, sizeof(struct rt_addrinfo));
1072 rtinfo.rti_ifaaddr = ifma->ifma_addr;
b2632176
SZ
1073 if (ifp != NULL && !TAILQ_EMPTY(&ifp->if_addrheads[mycpuid])) {
1074 rtinfo.rti_ifpaddr =
1075 TAILQ_FIRST(&ifp->if_addrheads[mycpuid])->ifa->ifa_addr;
1076 }
984263bc
MD
1077 /*
1078 * If a link-layer address is present, present it as a ``gateway''
1079 * (similarly to how ARP entries, e.g., are presented).
1080 */
590b8cd4 1081 rtinfo.rti_gateway = ifma->ifma_lladdr;
f23061d4 1082
590b8cd4 1083 m = rt_msg_mbuf(cmd, &rtinfo);
f23061d4 1084 if (m == NULL)
984263bc 1085 return;
f23061d4 1086
984263bc
MD
1087 ifmam = mtod(m, struct ifma_msghdr *);
1088 ifmam->ifmam_index = ifp->if_index;
590b8cd4 1089 ifmam->ifmam_addrs = rtinfo.rti_addrs;
f23061d4 1090
590b8cd4 1091 rts_input(m, familyof(ifma->ifma_addr));
984263bc
MD
1092}
1093
841ab66c
SZ
1094static struct mbuf *
1095rt_makeifannouncemsg(struct ifnet *ifp, int type, int what,
1096 struct rt_addrinfo *info)
984263bc 1097{
590b8cd4 1098 struct if_announcemsghdr *ifan;
841ab66c 1099 struct mbuf *m;
984263bc
MD
1100
1101 if (route_cb.any_count == 0)
841ab66c 1102 return NULL;
f23061d4 1103
841ab66c
SZ
1104 bzero(info, sizeof(*info));
1105 m = rt_msg_mbuf(type, info);
984263bc 1106 if (m == NULL)
841ab66c 1107 return NULL;
f23061d4 1108
984263bc
MD
1109 ifan = mtod(m, struct if_announcemsghdr *);
1110 ifan->ifan_index = ifp->if_index;
5fe66e68 1111 strlcpy(ifan->ifan_name, ifp->if_xname, sizeof ifan->ifan_name);
984263bc 1112 ifan->ifan_what = what;
841ab66c
SZ
1113 return m;
1114}
1115
1116/*
1117 * This is called to generate routing socket messages indicating
1118 * IEEE80211 wireless events.
1119 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way.
1120 */
1121void
1122rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len)
1123{
1124 struct rt_addrinfo info;
1125 struct mbuf *m;
f23061d4 1126
841ab66c
SZ
1127 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info);
1128 if (m == NULL)
1129 return;
1130
1131 /*
1132 * Append the ieee80211 data. Try to stick it in the
1133 * mbuf containing the ifannounce msg; otherwise allocate
1134 * a new mbuf and append.
1135 *
1136 * NB: we assume m is a single mbuf.
1137 */
1138 if (data_len > M_TRAILINGSPACE(m)) {
b11e1686 1139 struct mbuf *n = m_get(MB_DONTWAIT, MT_DATA);
841ab66c
SZ
1140 if (n == NULL) {
1141 m_freem(m);
1142 return;
1143 }
1144 bcopy(data, mtod(n, void *), data_len);
1145 n->m_len = data_len;
1146 m->m_next = n;
1147 } else if (data_len > 0) {
1148 bcopy(data, mtod(m, u_int8_t *) + m->m_len, data_len);
1149 m->m_len += data_len;
1150 }
e9fa4b60 1151 mbuftrackid(m, 33);
841ab66c
SZ
1152 if (m->m_flags & M_PKTHDR)
1153 m->m_pkthdr.len += data_len;
1154 mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len;
590b8cd4 1155 rts_input(m, 0);
841ab66c
SZ
1156}
1157
1158/*
1159 * This is called to generate routing socket messages indicating
1160 * network interface arrival and departure.
1161 */
1162void
1163rt_ifannouncemsg(struct ifnet *ifp, int what)
1164{
1165 struct rt_addrinfo addrinfo;
1166 struct mbuf *m;
1167
1168 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &addrinfo);
1169 if (m != NULL)
1170 rts_input(m, 0);
590b8cd4 1171}
f23061d4 1172
590b8cd4
JH
1173static int
1174resizewalkarg(struct walkarg *w, int len)
1175{
1176 void *newptr;
1177
efda3bd0 1178 newptr = kmalloc(len, M_RTABLE, M_INTWAIT | M_NULLOK);
590b8cd4
JH
1179 if (newptr == NULL)
1180 return (ENOMEM);
1181 if (w->w_tmem != NULL)
efda3bd0 1182 kfree(w->w_tmem, M_RTABLE);
590b8cd4
JH
1183 w->w_tmem = newptr;
1184 w->w_tmemsize = len;
1185 return (0);
1186}
984263bc
MD
1187
1188/*
1189 * This is used in dumping the kernel table via sysctl().
1190 */
1191int
590b8cd4 1192sysctl_dumpentry(struct radix_node *rn, void *vw)
984263bc 1193{
82ed7fc2
RG
1194 struct walkarg *w = vw;
1195 struct rtentry *rt = (struct rtentry *)rn;
590b8cd4
JH
1196 struct rt_addrinfo rtinfo;
1197 int error, msglen;
984263bc
MD
1198
1199 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
1200 return 0;
f23061d4 1201
590b8cd4
JH
1202 bzero(&rtinfo, sizeof(struct rt_addrinfo));
1203 rtinfo.rti_dst = rt_key(rt);
1204 rtinfo.rti_gateway = rt->rt_gateway;
1205 rtinfo.rti_netmask = rt_mask(rt);
1206 rtinfo.rti_genmask = rt->rt_genmask;
ef87f48d 1207 if (rt->rt_ifp != NULL) {
590b8cd4 1208 rtinfo.rti_ifpaddr =
b2632176 1209 TAILQ_FIRST(&rt->rt_ifp->if_addrheads[mycpuid])->ifa->ifa_addr;
590b8cd4 1210 rtinfo.rti_ifaaddr = rt->rt_ifa->ifa_addr;
984263bc 1211 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
590b8cd4 1212 rtinfo.rti_bcastaddr = rt->rt_ifa->ifa_dstaddr;
984263bc 1213 }
590b8cd4
JH
1214 msglen = rt_msgsize(RTM_GET, &rtinfo);
1215 if (w->w_tmemsize < msglen && resizewalkarg(w, msglen) != 0)
1216 return (ENOMEM);
1217 rt_msg_buffer(RTM_GET, &rtinfo, w->w_tmem, msglen);
1218 if (w->w_req != NULL) {
8e63efec 1219 struct rt_msghdr *rtm = w->w_tmem;
984263bc
MD
1220
1221 rtm->rtm_flags = rt->rt_flags;
1222 rtm->rtm_use = rt->rt_use;
1223 rtm->rtm_rmx = rt->rt_rmx;
1224 rtm->rtm_index = rt->rt_ifp->if_index;
1225 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
590b8cd4
JH
1226 rtm->rtm_addrs = rtinfo.rti_addrs;
1227 error = SYSCTL_OUT(w->w_req, rtm, msglen);
984263bc
MD
1228 return (error);
1229 }
590b8cd4 1230 return (0);
984263bc
MD
1231}
1232
590b8cd4
JH
1233static int
1234sysctl_iflist(int af, struct walkarg *w)
984263bc 1235{
82ed7fc2 1236 struct ifnet *ifp;
590b8cd4
JH
1237 struct rt_addrinfo rtinfo;
1238 int msglen, error;
984263bc 1239
590b8cd4 1240 bzero(&rtinfo, sizeof(struct rt_addrinfo));
984263bc 1241 TAILQ_FOREACH(ifp, &ifnet, if_link) {
b2632176
SZ
1242 struct ifaddr_container *ifac;
1243 struct ifaddr *ifa;
1244
984263bc
MD
1245 if (w->w_arg && w->w_arg != ifp->if_index)
1246 continue;
b2632176
SZ
1247 ifac = TAILQ_FIRST(&ifp->if_addrheads[mycpuid]);
1248 ifa = ifac->ifa;
590b8cd4
JH
1249 rtinfo.rti_ifpaddr = ifa->ifa_addr;
1250 msglen = rt_msgsize(RTM_IFINFO, &rtinfo);
1251 if (w->w_tmemsize < msglen && resizewalkarg(w, msglen) != 0)
1252 return (ENOMEM);
1253 rt_msg_buffer(RTM_IFINFO, &rtinfo, w->w_tmem, msglen);
1254 rtinfo.rti_ifpaddr = NULL;
ef87f48d 1255 if (w->w_req != NULL && w->w_tmem != NULL) {
8e63efec 1256 struct if_msghdr *ifm = w->w_tmem;
984263bc 1257
984263bc 1258 ifm->ifm_index = ifp->if_index;
9c095379 1259 ifm->ifm_flags = ifp->if_flags;
984263bc 1260 ifm->ifm_data = ifp->if_data;
590b8cd4
JH
1261 ifm->ifm_addrs = rtinfo.rti_addrs;
1262 error = SYSCTL_OUT(w->w_req, ifm, msglen);
984263bc
MD
1263 if (error)
1264 return (error);
1265 }
b2632176
SZ
1266 while ((ifac = TAILQ_NEXT(ifac, ifa_link)) != NULL) {
1267 ifa = ifac->ifa;
1268
984263bc
MD
1269 if (af && af != ifa->ifa_addr->sa_family)
1270 continue;
590b8cd4 1271 if (curproc->p_ucred->cr_prison &&
87de5057 1272 prison_if(curproc->p_ucred, ifa->ifa_addr))
984263bc 1273 continue;
590b8cd4
JH
1274 rtinfo.rti_ifaaddr = ifa->ifa_addr;
1275 rtinfo.rti_netmask = ifa->ifa_netmask;
1276 rtinfo.rti_bcastaddr = ifa->ifa_dstaddr;
1277 msglen = rt_msgsize(RTM_NEWADDR, &rtinfo);
1278 if (w->w_tmemsize < msglen &&
1279 resizewalkarg(w, msglen) != 0)
1280 return (ENOMEM);
1281 rt_msg_buffer(RTM_NEWADDR, &rtinfo, w->w_tmem, msglen);
1282 if (w->w_req != NULL) {
8e63efec 1283 struct ifa_msghdr *ifam = w->w_tmem;
984263bc 1284
984263bc
MD
1285 ifam->ifam_index = ifa->ifa_ifp->if_index;
1286 ifam->ifam_flags = ifa->ifa_flags;
1287 ifam->ifam_metric = ifa->ifa_metric;
590b8cd4
JH
1288 ifam->ifam_addrs = rtinfo.rti_addrs;
1289 error = SYSCTL_OUT(w->w_req, w->w_tmem, msglen);
984263bc
MD
1290 if (error)
1291 return (error);
1292 }
1293 }
590b8cd4
JH
1294 rtinfo.rti_netmask = NULL;
1295 rtinfo.rti_ifaaddr = NULL;
1296 rtinfo.rti_bcastaddr = NULL;
984263bc
MD
1297 }
1298 return (0);
1299}
1300
1301static int
1302sysctl_rtsock(SYSCTL_HANDLER_ARGS)
1303{
1304 int *name = (int *)arg1;
1305 u_int namelen = arg2;
82ed7fc2 1306 struct radix_node_head *rnh;
a49aa710 1307 int i, error = EINVAL;
ecdefdda 1308 int origcpu;
984263bc
MD
1309 u_char af;
1310 struct walkarg w;
1311
1312 name ++;
1313 namelen--;
1314 if (req->newptr)
1315 return (EPERM);
ecdefdda 1316 if (namelen != 3 && namelen != 4)
984263bc
MD
1317 return (EINVAL);
1318 af = name[0];
5fe66e68 1319 bzero(&w, sizeof w);
984263bc
MD
1320 w.w_op = name[1];
1321 w.w_arg = name[2];
1322 w.w_req = req;
1323
ecdefdda
MD
1324 /*
1325 * Optional third argument specifies cpu, used primarily for
1326 * debugging the route table.
1327 */
1328 if (namelen == 4) {
1329 if (name[3] < 0 || name[3] >= ncpus)
1330 return (EINVAL);
1331 origcpu = mycpuid;
1332 lwkt_migratecpu(name[3]);
1333 } else {
1334 origcpu = -1;
1335 }
a49aa710 1336 crit_enter();
984263bc 1337 switch (w.w_op) {
984263bc
MD
1338 case NET_RT_DUMP:
1339 case NET_RT_FLAGS:
1340 for (i = 1; i <= AF_MAX; i++)
ecdefdda
MD
1341 if ((rnh = rt_tables[mycpuid][i]) &&
1342 (af == 0 || af == i) &&
984263bc 1343 (error = rnh->rnh_walktree(rnh,
f23061d4 1344 sysctl_dumpentry, &w)))
984263bc
MD
1345 break;
1346 break;
1347
1348 case NET_RT_IFLIST:
1349 error = sysctl_iflist(af, &w);
1350 }
a49aa710 1351 crit_exit();
590b8cd4 1352 if (w.w_tmem != NULL)
efda3bd0 1353 kfree(w.w_tmem, M_RTABLE);
ecdefdda
MD
1354 if (origcpu >= 0)
1355 lwkt_migratecpu(origcpu);
984263bc
MD
1356 return (error);
1357}
1358
1359SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, "");
1360
1361/*
1362 * Definitions of protocols supported in the ROUTE domain.
1363 */
1364
ba4257b8 1365static struct domain routedomain; /* or at least forward */
984263bc
MD
1366
1367static struct protosw routesw[] = {
1368{ SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
1369 0, route_output, raw_ctlinput, 0,
e3873585 1370 cpu0_soport, cpu0_ctlport,
984263bc
MD
1371 raw_init, 0, 0, 0,
1372 &route_usrreqs
1373}
1374};
1375
ba4257b8 1376static struct domain routedomain = {
9c70fe43
JH
1377 PF_ROUTE, "route", NULL, NULL, NULL,
1378 routesw, &routesw[(sizeof routesw)/(sizeof routesw[0])],
1379};
984263bc
MD
1380
1381DOMAIN_SET(route);
47db7f9b 1382