This source file includes following definitions.
- route_usrreq
- route_output
- rt_setmetrics
- rt_getmetrics
- rt_xaddrs
- rt_msg1
- rt_msg2
- rt_missmsg
- rt_ifmsg
- rt_newaddrmsg
- rt_ifannouncemsg
- sysctl_dumpentry
- sysctl_iflist
- sysctl_rtable
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64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/proc.h>
67 #include <sys/mbuf.h>
68 #include <sys/socket.h>
69 #include <sys/socketvar.h>
70 #include <sys/domain.h>
71 #include <sys/protosw.h>
72
73 #include <uvm/uvm_extern.h>
74 #include <sys/sysctl.h>
75
76 #include <net/if.h>
77 #include <net/route.h>
78 #include <net/raw_cb.h>
79
80 #include <sys/stdarg.h>
81
82 struct sockaddr route_dst = { 2, PF_ROUTE, };
83 struct sockaddr route_src = { 2, PF_ROUTE, };
84 struct sockproto route_proto = { PF_ROUTE, };
85
86 struct walkarg {
87 int w_op, w_arg, w_given, w_needed, w_tmemsize;
88 caddr_t w_where, w_tmem;
89 };
90
91 static struct mbuf
92 *rt_msg1(int, struct rt_addrinfo *);
93 static int rt_msg2(int, struct rt_addrinfo *, caddr_t, struct walkarg *);
94 static void rt_xaddrs(caddr_t, caddr_t, struct rt_addrinfo *);
95
96
97 #define dst info.rti_info[RTAX_DST]
98 #define gate info.rti_info[RTAX_GATEWAY]
99 #define netmask info.rti_info[RTAX_NETMASK]
100 #define genmask info.rti_info[RTAX_GENMASK]
101 #define ifpaddr info.rti_info[RTAX_IFP]
102 #define ifaaddr info.rti_info[RTAX_IFA]
103 #define brdaddr info.rti_info[RTAX_BRD]
104
105 int
106 route_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
107 struct mbuf *control)
108 {
109 int error = 0;
110 struct rawcb *rp = sotorawcb(so);
111 int s;
112
113 if (req == PRU_ATTACH) {
114 MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK);
115 so->so_pcb = rp;
116 bzero(so->so_pcb, sizeof(*rp));
117 }
118 if (req == PRU_DETACH && rp) {
119 int af = rp->rcb_proto.sp_protocol;
120 if (af == AF_INET)
121 route_cb.ip_count--;
122 else if (af == AF_INET6)
123 route_cb.ip6_count--;
124 route_cb.any_count--;
125 }
126 s = splsoftnet();
127
128
129
130
131
132 if (req == PRU_ATTACH) {
133 if (curproc == 0)
134 error = EACCES;
135 else
136 error = raw_attach(so, (int)(long)nam);
137 } else
138 error = raw_usrreq(so, req, m, nam, control);
139
140 rp = sotorawcb(so);
141 if (req == PRU_ATTACH && rp) {
142 int af = rp->rcb_proto.sp_protocol;
143 if (error) {
144 free(rp, M_PCB);
145 splx(s);
146 return (error);
147 }
148 if (af == AF_INET)
149 route_cb.ip_count++;
150 else if (af == AF_INET6)
151 route_cb.ip6_count++;
152 rp->rcb_faddr = &route_src;
153 route_cb.any_count++;
154 soisconnected(so);
155 so->so_options |= SO_USELOOPBACK;
156 }
157 splx(s);
158 return (error);
159 }
160
161 int
162 route_output(struct mbuf *m, ...)
163 {
164 struct rt_msghdr *rtm = NULL;
165 struct radix_node *rn = NULL;
166 struct rtentry *rt = NULL;
167 struct rtentry *saved_nrt = NULL;
168 struct radix_node_head *rnh;
169 struct rt_addrinfo info;
170 int len, error = 0;
171 struct ifnet *ifp = NULL;
172 struct ifaddr *ifa = NULL;
173 struct socket *so;
174 struct rawcb *rp = NULL;
175 struct sockaddr_rtlabel sa_rt;
176 const char *label;
177 va_list ap;
178 u_int tableid;
179
180 va_start(ap, m);
181 so = va_arg(ap, struct socket *);
182 va_end(ap);
183
184 if (m == 0 || ((m->m_len < sizeof(int32_t)) &&
185 (m = m_pullup(m, sizeof(int32_t))) == 0))
186 return (ENOBUFS);
187 if ((m->m_flags & M_PKTHDR) == 0)
188 panic("route_output");
189 len = m->m_pkthdr.len;
190 if (len < sizeof(*rtm) ||
191 len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
192 dst = 0;
193 error = EINVAL;
194 goto flush;
195 }
196 R_Malloc(rtm, struct rt_msghdr *, len);
197 if (rtm == 0) {
198 dst = 0;
199 error = ENOBUFS;
200 goto flush;
201 }
202 m_copydata(m, 0, len, (caddr_t)rtm);
203 if (rtm->rtm_version != RTM_VERSION) {
204 dst = 0;
205 error = EPROTONOSUPPORT;
206 goto flush;
207 }
208 rtm->rtm_pid = curproc->p_pid;
209
210 tableid = rtm->rtm_tableid;
211 if (!rtable_exists(tableid)) {
212 if (rtm->rtm_type == RTM_ADD) {
213 if (rtable_add(tableid)) {
214 error = EINVAL;
215 goto flush;
216 }
217 } else {
218 error = EINVAL;
219 goto flush;
220 }
221 }
222
223 bzero(&info, sizeof(info));
224 info.rti_addrs = rtm->rtm_addrs;
225 rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info);
226 info.rti_flags = rtm->rtm_flags;
227 if (dst == 0 || dst->sa_family >= AF_MAX ||
228 (gate != 0 && gate->sa_family >= AF_MAX)) {
229 error = EINVAL;
230 goto flush;
231 }
232 if (genmask) {
233 struct radix_node *t;
234 t = rn_addmask(genmask, 0, 1);
235 if (t && genmask->sa_len >=
236 ((struct sockaddr *)t->rn_key)->sa_len &&
237 Bcmp((caddr_t *)genmask + 1, (caddr_t *)t->rn_key + 1,
238 ((struct sockaddr *)t->rn_key)->sa_len) - 1)
239 genmask = (struct sockaddr *)(t->rn_key);
240 else {
241 error = ENOBUFS;
242 goto flush;
243 }
244 }
245
246
247
248
249
250 if (rtm->rtm_type != RTM_GET && suser(curproc, 0) != 0) {
251 error = EACCES;
252 goto flush;
253 }
254
255 switch (rtm->rtm_type) {
256 case RTM_ADD:
257 if (gate == 0) {
258 error = EINVAL;
259 goto flush;
260 }
261 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt, tableid);
262 if (error == 0 && saved_nrt) {
263 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
264 &saved_nrt->rt_rmx);
265 saved_nrt->rt_refcnt--;
266 saved_nrt->rt_genmask = genmask;
267 rtm->rtm_index = saved_nrt->rt_ifp->if_index;
268 }
269 break;
270 case RTM_DELETE:
271 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt, tableid);
272 if (error == 0) {
273 (rt = saved_nrt)->rt_refcnt++;
274 goto report;
275 }
276 break;
277 case RTM_GET:
278 case RTM_CHANGE:
279 case RTM_LOCK:
280 if ((rnh = rt_gettable(dst->sa_family, tableid)) == NULL) {
281 error = EAFNOSUPPORT;
282 goto flush;
283 }
284 rn = rt_lookup(dst, netmask, tableid);
285 if (rn == NULL || (rn->rn_flags & RNF_ROOT) != 0) {
286 error = ESRCH;
287 goto flush;
288 }
289 rt = (struct rtentry *)rn;
290 #ifndef SMALL_KERNEL
291
292
293
294
295
296
297
298
299 if (rn_mpath_capable(rnh) &&
300 (rtm->rtm_type != RTM_GET || gate)) {
301 rt = rt_mpath_matchgate(rt, gate);
302 rn = (struct radix_node *)rt;
303 if (!rt) {
304 error = ESRCH;
305 goto flush;
306 }
307 }
308 #endif
309 rt->rt_refcnt++;
310
311
312
313
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315
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317
318
319
320 if (rtm->rtm_type != RTM_GET && !rt_mask(rt) != !netmask) {
321 error = ESRCH;
322 goto flush;
323 }
324
325 switch (rtm->rtm_type) {
326 case RTM_GET:
327 report:
328 dst = rt_key(rt);
329 gate = rt->rt_gateway;
330 netmask = rt_mask(rt);
331 genmask = rt->rt_genmask;
332
333 if (rt->rt_labelid) {
334 bzero(&sa_rt, sizeof(sa_rt));
335 sa_rt.sr_len = sizeof(sa_rt);
336 label = rtlabel_id2name(rt->rt_labelid);
337 if (label != NULL)
338 strlcpy(sa_rt.sr_label, label,
339 sizeof(sa_rt.sr_label));
340 info.rti_info[RTAX_LABEL] =
341 (struct sockaddr *)&sa_rt;
342 }
343
344 ifpaddr = 0;
345 ifaaddr = 0;
346 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA) &&
347 (ifp = rt->rt_ifp) != NULL) {
348 ifpaddr =
349 TAILQ_FIRST(&ifp->if_addrlist)->ifa_addr;
350 ifaaddr = rt->rt_ifa->ifa_addr;
351 if (ifp->if_flags & IFF_POINTOPOINT)
352 brdaddr = rt->rt_ifa->ifa_dstaddr;
353 else
354 brdaddr = 0;
355 rtm->rtm_index = ifp->if_index;
356 }
357 len = rt_msg2(rtm->rtm_type, &info, NULL, NULL);
358 if (len > rtm->rtm_msglen) {
359 struct rt_msghdr *new_rtm;
360 R_Malloc(new_rtm, struct rt_msghdr *, len);
361 if (new_rtm == 0) {
362 error = ENOBUFS;
363 goto flush;
364 }
365 Bcopy(rtm, new_rtm, rtm->rtm_msglen);
366 Free(rtm); rtm = new_rtm;
367 }
368 rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm, NULL);
369 rtm->rtm_flags = rt->rt_flags;
370 rtm->rtm_use = 0;
371 rt_getmetrics(&rt->rt_rmx, &rtm->rtm_rmx);
372 rtm->rtm_addrs = info.rti_addrs;
373 break;
374
375 case RTM_CHANGE:
376
377
378
379
380
381 if ((error = rt_getifa(&info)) != 0)
382 goto flush;
383 if (gate && rt_setgate(rt, rt_key(rt), gate, tableid)) {
384 error = EDQUOT;
385 goto flush;
386 }
387 if (ifpaddr && (ifa = ifa_ifwithnet(ifpaddr)) &&
388 (ifp = ifa->ifa_ifp) && (ifaaddr || gate))
389 ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate,
390 ifp);
391 else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) ||
392 (gate && (ifa = ifa_ifwithroute(rt->rt_flags,
393 rt_key(rt), gate))))
394 ifp = ifa->ifa_ifp;
395 if (ifa) {
396 struct ifaddr *oifa = rt->rt_ifa;
397 if (oifa != ifa) {
398 if (oifa && oifa->ifa_rtrequest)
399 oifa->ifa_rtrequest(RTM_DELETE, rt,
400 &info);
401 IFAFREE(rt->rt_ifa);
402 rt->rt_ifa = ifa;
403 ifa->ifa_refcnt++;
404 rt->rt_ifp = ifp;
405 }
406 }
407
408
409 if (rtm->rtm_fmask & RTF_FMASK)
410 rt->rt_flags = (rt->rt_flags &
411 ~rtm->rtm_fmask) |
412 (rtm->rtm_flags & rtm->rtm_fmask);
413
414 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
415 &rt->rt_rmx);
416 rtm->rtm_index = rt->rt_ifp->if_index;
417 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
418 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info);
419 if (genmask)
420 rt->rt_genmask = genmask;
421 if (info.rti_info[RTAX_LABEL] != NULL) {
422 char *rtlabel = ((struct sockaddr_rtlabel *)
423 info.rti_info[RTAX_LABEL])->sr_label;
424 rtlabel_unref(rt->rt_labelid);
425 rt->rt_labelid =
426 rtlabel_name2id(rtlabel);
427 }
428 if_group_routechange(dst, netmask);
429
430 case RTM_LOCK:
431 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
432 rt->rt_rmx.rmx_locks |=
433 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
434 break;
435 }
436 break;
437
438 default:
439 error = EOPNOTSUPP;
440 break;
441 }
442
443 flush:
444 if (rtm) {
445 if (error)
446 rtm->rtm_errno = error;
447 else
448 rtm->rtm_flags |= RTF_DONE;
449 }
450 if (rt)
451 rtfree(rt);
452
453
454
455
456 if (!(so->so_options & SO_USELOOPBACK)) {
457 if (route_cb.any_count <= 1) {
458 if (rtm)
459 Free(rtm);
460 m_freem(m);
461 return (error);
462 }
463
464 rp = sotorawcb(so);
465 }
466 if (rp)
467 rp->rcb_proto.sp_family = 0;
468 if (dst)
469 route_proto.sp_protocol = dst->sa_family;
470 if (rtm) {
471 m_copyback(m, 0, rtm->rtm_msglen, rtm);
472 if (m->m_pkthdr.len < rtm->rtm_msglen) {
473 m_freem(m);
474 m = NULL;
475 } else if (m->m_pkthdr.len > rtm->rtm_msglen)
476 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
477 Free(rtm);
478 }
479 if (m)
480 raw_input(m, &route_proto, &route_src, &route_dst);
481 if (rp)
482 rp->rcb_proto.sp_family = PF_ROUTE;
483
484 return (error);
485 }
486
487 void
488 rt_setmetrics(u_long which, struct rt_metrics *in, struct rt_kmetrics *out)
489 {
490 if (which & RTV_MTU)
491 out->rmx_mtu = in->rmx_mtu;
492 if (which & RTV_EXPIRE)
493 out->rmx_expire = in->rmx_expire;
494 }
495
496 void
497 rt_getmetrics(struct rt_kmetrics *in, struct rt_metrics *out)
498 {
499 bzero(out, sizeof(*out));
500 out->rmx_locks = in->rmx_locks;
501 out->rmx_mtu = in->rmx_mtu;
502 out->rmx_expire = in->rmx_expire;
503 out->rmx_pksent = in->rmx_pksent;
504 }
505
506 #define ROUNDUP(a) \
507 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
508 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
509
510 static void
511 rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo)
512 {
513 struct sockaddr *sa;
514 int i;
515
516 bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
517 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
518 if ((rtinfo->rti_addrs & (1 << i)) == 0)
519 continue;
520 rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
521 ADVANCE(cp, sa);
522 }
523 }
524
525 static struct mbuf *
526 rt_msg1(int type, struct rt_addrinfo *rtinfo)
527 {
528 struct rt_msghdr *rtm;
529 struct mbuf *m;
530 int i;
531 struct sockaddr *sa;
532 int len, dlen;
533
534 switch (type) {
535 case RTM_DELADDR:
536 case RTM_NEWADDR:
537 len = sizeof(struct ifa_msghdr);
538 break;
539 case RTM_IFINFO:
540 len = sizeof(struct if_msghdr);
541 break;
542 case RTM_IFANNOUNCE:
543 len = sizeof(struct if_announcemsghdr);
544 break;
545 default:
546 len = sizeof(struct rt_msghdr);
547 break;
548 }
549 if (len > MCLBYTES)
550 panic("rt_msg1");
551 m = m_gethdr(M_DONTWAIT, MT_DATA);
552 if (m && len > MHLEN) {
553 MCLGET(m, M_DONTWAIT);
554 if ((m->m_flags & M_EXT) == 0) {
555 m_free(m);
556 m = NULL;
557 }
558 }
559 if (m == 0)
560 return (m);
561 m->m_pkthdr.len = m->m_len = len;
562 m->m_pkthdr.rcvif = NULL;
563 rtm = mtod(m, struct rt_msghdr *);
564 bzero(rtm, len);
565 for (i = 0; i < RTAX_MAX; i++) {
566 if ((sa = rtinfo->rti_info[i]) == NULL)
567 continue;
568 rtinfo->rti_addrs |= (1 << i);
569 dlen = ROUNDUP(sa->sa_len);
570 m_copyback(m, len, dlen, sa);
571 len += dlen;
572 }
573 if (m->m_pkthdr.len != len) {
574 m_freem(m);
575 return (NULL);
576 }
577 rtm->rtm_msglen = len;
578 rtm->rtm_version = RTM_VERSION;
579 rtm->rtm_type = type;
580 return (m);
581 }
582
583 static int
584 rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w)
585 {
586 int i;
587 int len, dlen, second_time = 0;
588 caddr_t cp0;
589
590 rtinfo->rti_addrs = 0;
591 again:
592 switch (type) {
593 case RTM_DELADDR:
594 case RTM_NEWADDR:
595 len = sizeof(struct ifa_msghdr);
596 break;
597 case RTM_IFINFO:
598 len = sizeof(struct if_msghdr);
599 break;
600 default:
601 len = sizeof(struct rt_msghdr);
602 break;
603 }
604 if ((cp0 = cp) != NULL)
605 cp += len;
606 for (i = 0; i < RTAX_MAX; i++) {
607 struct sockaddr *sa;
608
609 if ((sa = rtinfo->rti_info[i]) == 0)
610 continue;
611 rtinfo->rti_addrs |= (1 << i);
612 dlen = ROUNDUP(sa->sa_len);
613 if (cp) {
614 bcopy(sa, cp, (size_t)dlen);
615 cp += dlen;
616 }
617 len += dlen;
618 }
619 if (cp == 0 && w != NULL && !second_time) {
620 struct walkarg *rw = w;
621
622 rw->w_needed += len;
623 if (rw->w_needed <= 0 && rw->w_where) {
624 if (rw->w_tmemsize < len) {
625 if (rw->w_tmem)
626 free(rw->w_tmem, M_RTABLE);
627 rw->w_tmem = malloc(len, M_RTABLE, M_NOWAIT);
628 if (rw->w_tmem)
629 rw->w_tmemsize = len;
630 }
631 if (rw->w_tmem) {
632 cp = rw->w_tmem;
633 second_time = 1;
634 goto again;
635 } else
636 rw->w_where = 0;
637 }
638 }
639 if (cp) {
640 struct rt_msghdr *rtm = (struct rt_msghdr *)cp0;
641
642 rtm->rtm_version = RTM_VERSION;
643 rtm->rtm_type = type;
644 rtm->rtm_msglen = len;
645 }
646 return (len);
647 }
648
649
650
651
652
653
654
655 void
656 rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags,
657 struct ifnet *ifp, int error, u_int tableid)
658 {
659 struct rt_msghdr *rtm;
660 struct mbuf *m;
661 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
662
663 if (route_cb.any_count == 0)
664 return;
665 m = rt_msg1(type, rtinfo);
666 if (m == 0)
667 return;
668 rtm = mtod(m, struct rt_msghdr *);
669 rtm->rtm_flags = RTF_DONE | flags;
670 rtm->rtm_errno = error;
671 rtm->rtm_tableid = tableid;
672 rtm->rtm_addrs = rtinfo->rti_addrs;
673 if (ifp != NULL)
674 rtm->rtm_index = ifp->if_index;
675 if (sa == NULL)
676 route_proto.sp_protocol = 0;
677 else
678 route_proto.sp_protocol = sa->sa_family;
679 raw_input(m, &route_proto, &route_src, &route_dst);
680 }
681
682
683
684
685
686 void
687 rt_ifmsg(struct ifnet *ifp)
688 {
689 struct if_msghdr *ifm;
690 struct mbuf *m;
691 struct rt_addrinfo info;
692
693 if (route_cb.any_count == 0)
694 return;
695 bzero(&info, sizeof(info));
696 m = rt_msg1(RTM_IFINFO, &info);
697 if (m == 0)
698 return;
699 ifm = mtod(m, struct if_msghdr *);
700 ifm->ifm_index = ifp->if_index;
701 ifm->ifm_flags = ifp->if_flags;
702 ifm->ifm_data = ifp->if_data;
703 ifm->ifm_addrs = 0;
704 route_proto.sp_protocol = 0;
705 raw_input(m, &route_proto, &route_src, &route_dst);
706 }
707
708
709
710
711
712
713
714
715
716 void
717 rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
718 {
719 struct rt_addrinfo info;
720 struct sockaddr *sa = NULL;
721 int pass;
722 struct mbuf *m = NULL;
723 struct ifnet *ifp = ifa->ifa_ifp;
724
725 if (route_cb.any_count == 0)
726 return;
727 for (pass = 1; pass < 3; pass++) {
728 bzero(&info, sizeof(info));
729 if ((cmd == RTM_ADD && pass == 1) ||
730 (cmd == RTM_DELETE && pass == 2)) {
731 struct ifa_msghdr *ifam;
732 int ncmd;
733
734 if (cmd == RTM_ADD)
735 ncmd = RTM_NEWADDR;
736 else
737 ncmd = RTM_DELADDR;
738
739 ifaaddr = sa = ifa->ifa_addr;
740 ifpaddr = TAILQ_FIRST(&ifp->if_addrlist)->ifa_addr;
741 netmask = ifa->ifa_netmask;
742 brdaddr = ifa->ifa_dstaddr;
743 if ((m = rt_msg1(ncmd, &info)) == NULL)
744 continue;
745 ifam = mtod(m, struct ifa_msghdr *);
746 ifam->ifam_index = ifp->if_index;
747 ifam->ifam_metric = ifa->ifa_metric;
748 ifam->ifam_flags = ifa->ifa_flags;
749 ifam->ifam_addrs = info.rti_addrs;
750 }
751 if ((cmd == RTM_ADD && pass == 2) ||
752 (cmd == RTM_DELETE && pass == 1)) {
753 struct rt_msghdr *rtm;
754
755 if (rt == 0)
756 continue;
757 netmask = rt_mask(rt);
758 dst = sa = rt_key(rt);
759 gate = rt->rt_gateway;
760 if ((m = rt_msg1(cmd, &info)) == NULL)
761 continue;
762 rtm = mtod(m, struct rt_msghdr *);
763 rtm->rtm_index = ifp->if_index;
764 rtm->rtm_flags |= rt->rt_flags;
765 rtm->rtm_errno = error;
766 rtm->rtm_addrs = info.rti_addrs;
767 }
768 if (sa == NULL)
769 route_proto.sp_protocol = 0;
770 else
771 route_proto.sp_protocol = sa->sa_family;
772 raw_input(m, &route_proto, &route_src, &route_dst);
773 }
774 }
775
776
777
778
779
780 void
781 rt_ifannouncemsg(struct ifnet *ifp, int what)
782 {
783 struct if_announcemsghdr *ifan;
784 struct mbuf *m;
785 struct rt_addrinfo info;
786
787 if (route_cb.any_count == 0)
788 return;
789 bzero(&info, sizeof(info));
790 m = rt_msg1(RTM_IFANNOUNCE, &info);
791 if (m == 0)
792 return;
793 ifan = mtod(m, struct if_announcemsghdr *);
794 ifan->ifan_index = ifp->if_index;
795 strlcpy(ifan->ifan_name, ifp->if_xname, sizeof(ifan->ifan_name));
796 ifan->ifan_what = what;
797 route_proto.sp_protocol = 0;
798 raw_input(m, &route_proto, &route_src, &route_dst);
799 }
800
801
802
803
804 int
805 sysctl_dumpentry(struct radix_node *rn, void *v)
806 {
807 struct walkarg *w = v;
808 struct rtentry *rt = (struct rtentry *)rn;
809 int error = 0, size;
810 struct rt_addrinfo info;
811 struct sockaddr_rtlabel sa_rt;
812 const char *label;
813
814 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
815 return 0;
816 bzero(&info, sizeof(info));
817 dst = rt_key(rt);
818 gate = rt->rt_gateway;
819 netmask = rt_mask(rt);
820 genmask = rt->rt_genmask;
821 if (rt->rt_ifp) {
822 ifpaddr = TAILQ_FIRST(&rt->rt_ifp->if_addrlist)->ifa_addr;
823 ifaaddr = rt->rt_ifa->ifa_addr;
824 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
825 brdaddr = rt->rt_ifa->ifa_dstaddr;
826 }
827 if (rt->rt_labelid) {
828 bzero(&sa_rt, sizeof(sa_rt));
829 sa_rt.sr_len = sizeof(sa_rt);
830 label = rtlabel_id2name(rt->rt_labelid);
831 if (label != NULL) {
832 strlcpy(sa_rt.sr_label, label,
833 sizeof(sa_rt.sr_label));
834 info.rti_info[RTAX_LABEL] =
835 (struct sockaddr *)&sa_rt;
836 }
837 }
838
839 size = rt_msg2(RTM_GET, &info, NULL, w);
840 if (w->w_where && w->w_tmem && w->w_needed <= 0) {
841 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
842
843 rtm->rtm_flags = rt->rt_flags;
844 rtm->rtm_use = 0;
845 rt_getmetrics(&rt->rt_rmx, &rtm->rtm_rmx);
846 rtm->rtm_rmx.rmx_refcnt = (u_long)rt->rt_refcnt;
847 rtm->rtm_index = rt->rt_ifp->if_index;
848 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
849 rtm->rtm_addrs = info.rti_addrs;
850 if ((error = copyout(rtm, w->w_where, size)) != 0)
851 w->w_where = NULL;
852 else
853 w->w_where += size;
854 }
855 return (error);
856 }
857
858 int
859 sysctl_iflist(int af, struct walkarg *w)
860 {
861 struct ifnet *ifp;
862 struct ifaddr *ifa;
863 struct rt_addrinfo info;
864 int len, error = 0;
865
866 bzero(&info, sizeof(info));
867 TAILQ_FOREACH(ifp, &ifnet, if_list) {
868 if (w->w_arg && w->w_arg != ifp->if_index)
869 continue;
870 ifa = TAILQ_FIRST(&ifp->if_addrlist);
871 if (!ifa)
872 continue;
873 ifpaddr = ifa->ifa_addr;
874 len = rt_msg2(RTM_IFINFO, &info, 0, w);
875 ifpaddr = 0;
876 if (w->w_where && w->w_tmem && w->w_needed <= 0) {
877 struct if_msghdr *ifm;
878
879 ifm = (struct if_msghdr *)w->w_tmem;
880 ifm->ifm_index = ifp->if_index;
881 ifm->ifm_flags = ifp->if_flags;
882 ifm->ifm_data = ifp->if_data;
883 ifm->ifm_addrs = info.rti_addrs;
884 error = copyout(ifm, w->w_where, len);
885 if (error)
886 return (error);
887 w->w_where += len;
888 }
889 while ((ifa = TAILQ_NEXT(ifa, ifa_list)) !=
890 TAILQ_END(&ifp->if_addrlist)) {
891 if (af && af != ifa->ifa_addr->sa_family)
892 continue;
893 ifaaddr = ifa->ifa_addr;
894 netmask = ifa->ifa_netmask;
895 brdaddr = ifa->ifa_dstaddr;
896 len = rt_msg2(RTM_NEWADDR, &info, 0, w);
897 if (w->w_where && w->w_tmem && w->w_needed <= 0) {
898 struct ifa_msghdr *ifam;
899
900 ifam = (struct ifa_msghdr *)w->w_tmem;
901 ifam->ifam_index = ifa->ifa_ifp->if_index;
902 ifam->ifam_flags = ifa->ifa_flags;
903 ifam->ifam_metric = ifa->ifa_metric;
904 ifam->ifam_addrs = info.rti_addrs;
905 error = copyout(w->w_tmem, w->w_where, len);
906 if (error)
907 return (error);
908 w->w_where += len;
909 }
910 }
911 ifaaddr = netmask = brdaddr = 0;
912 }
913 return (0);
914 }
915
916 int
917 sysctl_rtable(int *name, u_int namelen, void *where, size_t *given, void *new,
918 size_t newlen)
919 {
920 struct radix_node_head *rnh;
921 int i, s, error = EINVAL;
922 u_char af;
923 struct walkarg w;
924 u_int tableid = 0;
925
926 if (new)
927 return (EPERM);
928 if (namelen < 3 || namelen > 4)
929 return (EINVAL);
930 af = name[0];
931 bzero(&w, sizeof(w));
932 w.w_where = where;
933 w.w_given = *given;
934 w.w_needed = 0 - w.w_given;
935 w.w_op = name[1];
936 w.w_arg = name[2];
937
938 if (namelen == 4) {
939 tableid = name[3];
940 if (!rtable_exists(tableid))
941 return (EINVAL);
942 }
943
944 s = splsoftnet();
945 switch (w.w_op) {
946
947 case NET_RT_DUMP:
948 case NET_RT_FLAGS:
949 for (i = 1; i <= AF_MAX; i++)
950 if ((rnh = rt_gettable(i, tableid)) != NULL &&
951 (af == 0 || af == i) &&
952 (error = (*rnh->rnh_walktree)(rnh,
953 sysctl_dumpentry, &w)))
954 break;
955 break;
956
957 case NET_RT_IFLIST:
958 error = sysctl_iflist(af, &w);
959 break;
960
961 case NET_RT_STATS:
962 error = sysctl_rdstruct(where, given, new,
963 &rtstat, sizeof(rtstat));
964 splx(s);
965 return (error);
966 }
967 splx(s);
968 if (w.w_tmem)
969 free(w.w_tmem, M_RTABLE);
970 w.w_needed += w.w_given;
971 if (where) {
972 *given = w.w_where - (caddr_t)where;
973 if (*given < w.w_needed)
974 return (ENOMEM);
975 } else
976 *given = (11 * w.w_needed) / 10;
977
978 return (error);
979 }
980
981
982
983
984
985 extern struct domain routedomain;
986
987 struct protosw routesw[] = {
988 { SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
989 raw_input, route_output, raw_ctlinput, 0,
990 route_usrreq,
991 raw_init, 0, 0, 0,
992 sysctl_rtable,
993 }
994 };
995
996 struct domain routedomain =
997 { PF_ROUTE, "route", route_init, 0, 0,
998 routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] };