2 * Copyright (c) 1988, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)rtsock.c 8.7 (Berkeley) 10/12/95
34 * $FreeBSD: src/sys/net/rtsock.c,v 1.44.2.11 2002/12/04 14:05:41 ru Exp $
35 * $DragonFly: src/sys/net/rtsock.c,v 1.16 2004/12/15 00:11:04 hsu Exp $
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/sysctl.h>
44 #include <sys/malloc.h>
46 #include <sys/protosw.h>
47 #include <sys/socket.h>
48 #include <sys/socketvar.h>
49 #include <sys/domain.h>
51 #include <machine/stdarg.h>
54 #include <net/route.h>
55 #include <net/raw_cb.h>
57 MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables");
59 static struct sockaddr route_dst = { 2, PF_ROUTE, };
60 static struct sockaddr route_src = { 2, PF_ROUTE, };
61 static struct sockaddr sa_zero = { sizeof(sa_zero), AF_INET, };
62 static struct sockproto route_proto = { PF_ROUTE, };
68 struct sysctl_req *w_req;
72 rt_msg1 (int, struct rt_addrinfo *);
73 static int rt_msg2 (int, struct rt_addrinfo *, caddr_t, struct walkarg *);
74 static int rt_xaddrs (char *, char *, struct rt_addrinfo *);
75 static int sysctl_dumpentry (struct radix_node *rn, void *vw);
76 static int sysctl_iflist (int af, struct walkarg *w);
77 static int route_output(struct mbuf *, struct socket *, ...);
78 static void rt_setmetrics (u_long, struct rt_metrics *,
82 * It really doesn't make any sense at all for this code to share much
83 * with raw_usrreq.c, since its functionality is so restricted. XXX
86 rts_abort(struct socket *so)
90 error = raw_usrreqs.pru_abort(so);
95 /* pru_accept is EOPNOTSUPP */
98 rts_attach(struct socket *so, int proto, struct pru_attach_info *ai)
103 if (sotorawcb(so) != NULL)
104 return EISCONN; /* XXX panic? */
105 MALLOC(rp, struct rawcb *, sizeof *rp, M_PCB, M_WAITOK|M_ZERO);
110 * The splnet() is necessary to block protocols from sending
111 * error notifications (like RTM_REDIRECT or RTM_LOSING) while
112 * this PCB is extant but incompletely initialized.
113 * Probably we should try to do more of this work beforehand and
118 error = raw_attach(so, proto, ai->sb_rlimit);
125 switch(rp->rcb_proto.sp_protocol) {
130 route_cb.ip6_count++;
133 route_cb.ipx_count++;
139 rp->rcb_faddr = &route_src;
140 route_cb.any_count++;
142 so->so_options |= SO_USELOOPBACK;
148 rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
152 error = raw_usrreqs.pru_bind(so, nam, td); /* xxx just EINVAL */
158 rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
162 error = raw_usrreqs.pru_connect(so, nam, td); /* XXX just EINVAL */
167 /* pru_connect2 is EOPNOTSUPP */
168 /* pru_control is EOPNOTSUPP */
171 rts_detach(struct socket *so)
173 struct rawcb *rp = sotorawcb(so);
178 switch(rp->rcb_proto.sp_protocol) {
183 route_cb.ip6_count--;
186 route_cb.ipx_count--;
192 route_cb.any_count--;
194 error = raw_usrreqs.pru_detach(so);
200 rts_disconnect(struct socket *so)
204 error = raw_usrreqs.pru_disconnect(so);
209 /* pru_listen is EOPNOTSUPP */
212 rts_peeraddr(struct socket *so, struct sockaddr **nam)
216 error = raw_usrreqs.pru_peeraddr(so, nam);
221 /* pru_rcvd is EOPNOTSUPP */
222 /* pru_rcvoob is EOPNOTSUPP */
225 rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
226 struct mbuf *control, struct thread *td)
230 error = raw_usrreqs.pru_send(so, flags, m, nam, control, td);
235 /* pru_sense is null */
238 rts_shutdown(struct socket *so)
242 error = raw_usrreqs.pru_shutdown(so);
248 rts_sockaddr(struct socket *so, struct sockaddr **nam)
252 error = raw_usrreqs.pru_sockaddr(so, nam);
257 static struct pr_usrreqs route_usrreqs = {
258 rts_abort, pru_accept_notsupp, rts_attach, rts_bind, rts_connect,
259 pru_connect2_notsupp, pru_control_notsupp, rts_detach, rts_disconnect,
260 pru_listen_notsupp, rts_peeraddr, pru_rcvd_notsupp, pru_rcvoob_notsupp,
261 rts_send, pru_sense_null, rts_shutdown, rts_sockaddr,
262 sosend, soreceive, sopoll
267 route_output(struct mbuf *m, struct socket *so, ...)
269 struct rt_msghdr *rtm = NULL;
270 struct rtentry *rt = NULL;
271 struct rtentry *saved_nrt = NULL;
272 struct radix_node_head *rnh;
273 struct ifnet *ifp = NULL;
274 struct ifaddr *ifa = NULL;
275 struct pr_output_info *oi;
276 struct rt_addrinfo info;
281 oi = __va_arg(ap, struct pr_output_info *);
284 #define gotoerr(e) { error = e; goto flush;}
285 if (m == NULL || ((m->m_len < sizeof(long)) &&
286 (m = m_pullup(m, sizeof(long))) == NULL))
288 if (!(m->m_flags & M_PKTHDR))
289 panic("route_output");
290 len = m->m_pkthdr.len;
291 if (len < sizeof(*rtm) ||
292 len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
296 R_Malloc(rtm, struct rt_msghdr *, len);
301 m_copydata(m, 0, len, (caddr_t)rtm);
302 if (rtm->rtm_version != RTM_VERSION) {
304 gotoerr(EPROTONOSUPPORT);
306 rtm->rtm_pid = oi->p_pid;
307 bzero(&info, sizeof(info));
308 info.rti_addrs = rtm->rtm_addrs;
309 if (rt_xaddrs((char *)(rtm + 1), len + (char *)rtm, &info)) {
313 info.rti_flags = rtm->rtm_flags;
314 if (info.sa_dst == NULL || info.sa_dst->sa_family >= AF_MAX ||
315 (info.sa_gateway != NULL && (info.sa_gateway->sa_family >= AF_MAX)))
318 if (info.sa_genmask != NULL) {
319 struct radix_node *t;
322 t = rn_addmask((char *)info.sa_genmask, TRUE, 1);
324 info.sa_genmask->sa_len >= (klen = *(u_char *)t->rn_key) &&
325 bcmp((char *)info.sa_genmask + 1, (char *)t->rn_key + 1,
327 info.sa_genmask = (struct sockaddr *)(t->rn_key);
333 * Verify that the caller has the appropriate privilege; RTM_GET
334 * is the only operation the non-superuser is allowed.
336 if (rtm->rtm_type != RTM_GET && suser_cred(so->so_cred, 0) != 0)
339 switch (rtm->rtm_type) {
342 if (info.sa_gateway == NULL)
344 error = rtrequest1(RTM_ADD, &info, &saved_nrt);
345 if (error == 0 && saved_nrt != NULL) {
346 rt_setmetrics(rtm->rtm_inits,
347 &rtm->rtm_rmx, &saved_nrt->rt_rmx);
348 saved_nrt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
349 saved_nrt->rt_rmx.rmx_locks |=
350 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
351 saved_nrt->rt_refcnt--;
352 saved_nrt->rt_genmask = info.sa_genmask;
357 error = rtrequest1(RTM_DELETE, &info, &saved_nrt);
359 if ((rt = saved_nrt))
368 if ((rnh = rt_tables[info.sa_dst->sa_family]) == NULL) {
369 gotoerr(EAFNOSUPPORT);
370 } else if ((rt = (struct rtentry *) rnh->rnh_lookup(
371 (char *)info.sa_dst, (char *)info.sa_netmask, rnh)) != NULL)
375 switch(rtm->rtm_type) {
379 info.sa_dst = rt_key(rt);
380 info.sa_gateway = rt->rt_gateway;
381 info.sa_netmask = rt_mask(rt);
382 info.sa_genmask = rt->rt_genmask;
383 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
387 TAILQ_FIRST(&ifp->if_addrhead)->
389 info.sa_ifaaddr = rt->rt_ifa->ifa_addr;
390 if (ifp->if_flags & IFF_POINTOPOINT)
392 rt->rt_ifa->ifa_dstaddr;
393 rtm->rtm_index = ifp->if_index;
395 info.sa_ifpaddr = NULL;
396 info.sa_ifaaddr = NULL;
399 len = rt_msg2(rtm->rtm_type, &info, NULL, NULL);
400 if (len > rtm->rtm_msglen) {
401 struct rt_msghdr *new_rtm;
402 R_Malloc(new_rtm, struct rt_msghdr *, len);
405 bcopy(rtm, new_rtm, rtm->rtm_msglen);
406 Free(rtm); rtm = new_rtm;
408 (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm, NULL);
409 rtm->rtm_flags = rt->rt_flags;
410 rtm->rtm_rmx = rt->rt_rmx;
411 rtm->rtm_addrs = info.rti_addrs;
416 * new gateway could require new ifaddr, ifp;
417 * flags may also be different; ifp may be specified
418 * by ll sockaddr when protocol address is ambiguous
420 if (((rt->rt_flags & RTF_GATEWAY) &&
421 info.sa_gateway != NULL) ||
422 info.sa_ifpaddr != NULL ||
423 (info.sa_ifaaddr != NULL &&
424 bcmp(info.sa_ifaaddr, rt->rt_ifa->ifa_addr,
425 info.sa_ifaaddr->sa_len) == 0)) {
426 if ((error = rt_getifa(&info)) != 0)
429 if (info.sa_gateway != NULL &&
430 (error = rt_setgate(rt, rt_key(rt),
431 info.sa_gateway)) != 0)
433 if ((ifa = info.rti_ifa) != NULL) {
434 struct ifaddr *oifa = rt->rt_ifa;
437 if (oifa && oifa->ifa_rtrequest)
438 oifa->ifa_rtrequest(RTM_DELETE, rt,
443 rt->rt_ifp = info.rti_ifp;
446 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
448 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
449 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info);
450 if (info.sa_genmask != NULL)
451 rt->rt_genmask = info.sa_genmask;
456 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
457 rt->rt_rmx.rmx_locks |=
458 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
470 rtm->rtm_errno = error;
472 rtm->rtm_flags |= RTF_DONE;
477 struct rawcb *rp = NULL;
479 * Check to see if we don't want our own messages.
481 if (!(so->so_options & SO_USELOOPBACK)) {
482 if (route_cb.any_count <= 1) {
488 /* There is another listener, so construct message */
492 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
493 if (m->m_pkthdr.len < rtm->rtm_msglen) {
496 } else if (m->m_pkthdr.len > rtm->rtm_msglen)
497 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
501 rp->rcb_proto.sp_family = 0; /* Avoid us */
502 if (info.sa_dst != NULL)
503 route_proto.sp_protocol = info.sa_dst->sa_family;
505 raw_input(m, &route_proto, &route_src, &route_dst);
507 rp->rcb_proto.sp_family = PF_ROUTE;
513 rt_setmetrics(u_long which, struct rt_metrics *in, struct rt_metrics *out)
515 #define setmetric(flag, elt) if (which & (flag)) out->elt = in->elt;
516 setmetric(RTV_RPIPE, rmx_recvpipe);
517 setmetric(RTV_SPIPE, rmx_sendpipe);
518 setmetric(RTV_SSTHRESH, rmx_ssthresh);
519 setmetric(RTV_RTT, rmx_rtt);
520 setmetric(RTV_RTTVAR, rmx_rttvar);
521 setmetric(RTV_HOPCOUNT, rmx_hopcount);
522 setmetric(RTV_MTU, rmx_mtu);
523 setmetric(RTV_EXPIRE, rmx_expire);
528 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
529 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
532 * Extract the addresses of the passed sockaddrs.
533 * Do a little sanity checking so as to avoid bad memory references.
534 * This data is derived straight from userland.
537 rt_xaddrs(char *cp, char *cplim, struct rt_addrinfo *rtinfo)
542 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
543 if ((rtinfo->rti_addrs & (1 << i)) == 0)
545 sa = (struct sockaddr *)cp;
549 if ( (cp + sa->sa_len) > cplim ) {
554 * There are no more... Quit now.
555 * If there are more bits, they are in error.
556 * I've seen this. route(1) can evidently generate these.
557 * This causes kernel to core dump.
558 * For compatibility, if we see this, point to a safe address.
560 if (sa->sa_len == 0) {
561 rtinfo->rti_info[i] = &sa_zero;
562 return (0); /* should be EINVAL but for compat */
565 /* Accept the sockaddr. */
566 rtinfo->rti_info[i] = sa;
573 rt_msg1(type, rtinfo)
575 struct rt_addrinfo *rtinfo;
577 struct rt_msghdr *rtm;
587 len = sizeof(struct ifa_msghdr);
592 len = sizeof(struct ifma_msghdr);
596 len = sizeof(struct if_msghdr);
600 len = sizeof(struct if_announcemsghdr);
604 len = sizeof(struct rt_msghdr);
608 m = m_gethdr(MB_DONTWAIT, MT_DATA);
609 if (m && len > MHLEN) {
610 MCLGET(m, MB_DONTWAIT);
611 if (!(m->m_flags & M_EXT)) {
618 m->m_pkthdr.len = m->m_len = len;
619 m->m_pkthdr.rcvif = NULL;
620 rtm = mtod(m, struct rt_msghdr *);
622 for (i = 0; i < RTAX_MAX; i++) {
623 if ((sa = rtinfo->rti_info[i]) == NULL)
625 rtinfo->rti_addrs |= (1 << i);
626 dlen = ROUNDUP(sa->sa_len);
627 m_copyback(m, len, dlen, (caddr_t)sa);
630 if (m->m_pkthdr.len != len) {
634 rtm->rtm_msglen = len;
635 rtm->rtm_version = RTM_VERSION;
636 rtm->rtm_type = type;
641 rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w)
645 boolean_t second_time = FALSE;
648 rtinfo->rti_addrs = NULL;
654 len = sizeof(struct ifa_msghdr);
658 len = sizeof(struct if_msghdr);
662 len = sizeof(struct rt_msghdr);
668 for (i = 0; i < RTAX_MAX; i++) {
671 if ((sa = rtinfo->rti_info[i]) == NULL)
673 rtinfo->rti_addrs |= (1 << i);
674 dlen = ROUNDUP(sa->sa_len);
682 if (cp == NULL && w != NULL && !second_time) {
683 struct walkarg *rw = w;
685 if (rw->w_req != NULL) {
686 if (rw->w_tmemsize < len) {
688 free(rw->w_tmem, M_RTABLE);
689 rw->w_tmem = malloc(len, M_RTABLE,
690 M_INTWAIT | M_NULLOK);
692 rw->w_tmemsize = len;
694 if (rw->w_tmem != NULL) {
702 struct rt_msghdr *rtm = (struct rt_msghdr *)cp0;
704 rtm->rtm_version = RTM_VERSION;
705 rtm->rtm_type = type;
706 rtm->rtm_msglen = len;
712 * This routine is called to generate a message from the routing
713 * socket indicating that a redirect has occured, a routing lookup
714 * has failed, or that a protocol has detected timeouts to a particular
718 rt_missmsg(type, rtinfo, flags, error)
719 int type, flags, error;
720 struct rt_addrinfo *rtinfo;
722 struct rt_msghdr *rtm;
724 struct sockaddr *sa = rtinfo->sa_dst;
726 if (route_cb.any_count == 0)
728 m = rt_msg1(type, rtinfo);
731 rtm = mtod(m, struct rt_msghdr *);
732 rtm->rtm_flags = RTF_DONE | flags;
733 rtm->rtm_errno = error;
734 rtm->rtm_addrs = rtinfo->rti_addrs;
735 route_proto.sp_protocol = sa ? sa->sa_family : 0;
736 raw_input(m, &route_proto, &route_src, &route_dst);
740 * This routine is called to generate a message from the routing
741 * socket indicating that the status of a network interface has changed.
747 struct if_msghdr *ifm;
749 struct rt_addrinfo info;
751 if (route_cb.any_count == 0)
753 bzero(&info, sizeof(info));
754 m = rt_msg1(RTM_IFINFO, &info);
757 ifm = mtod(m, struct if_msghdr *);
758 ifm->ifm_index = ifp->if_index;
759 ifm->ifm_flags = (u_short)ifp->if_flags;
760 ifm->ifm_data = ifp->if_data;
761 ifm->ifm_addrs = NULL;
762 route_proto.sp_protocol = 0;
763 raw_input(m, &route_proto, &route_src, &route_dst);
767 rt_ifamsg(int cmd, struct ifaddr *ifa)
769 struct ifa_msghdr *ifam;
770 struct rt_addrinfo info;
773 struct ifnet *ifp = ifa->ifa_ifp;
775 bzero(&info, sizeof(info));
776 info.sa_ifaaddr = sa = ifa->ifa_addr;
777 info.sa_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
778 info.sa_netmask = ifa->ifa_netmask;
779 info.sa_bcastaddr = ifa->ifa_dstaddr;
780 if ((m = rt_msg1(cmd, &info)) == NULL)
782 ifam = mtod(m, struct ifa_msghdr *);
783 ifam->ifam_index = ifp->if_index;
784 ifam->ifam_metric = ifa->ifa_metric;
785 ifam->ifam_flags = ifa->ifa_flags;
786 ifam->ifam_addrs = info.rti_addrs;
788 route_proto.sp_protocol = sa ? sa->sa_family : 0;
789 raw_input(m, &route_proto, &route_src, &route_dst);
793 rt_rtmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
795 struct rt_msghdr *rtm;
796 struct rt_addrinfo info;
799 struct ifnet *ifp = ifa->ifa_ifp;
803 bzero(&info, sizeof(info));
804 info.sa_netmask = rt_mask(rt);
805 info.sa_dst = sa = rt_key(rt);
806 info.sa_gateway = rt->rt_gateway;
807 if ((m = rt_msg1(cmd, &info)) == NULL)
809 rtm = mtod(m, struct rt_msghdr *);
810 rtm->rtm_index = ifp->if_index;
811 rtm->rtm_flags |= rt->rt_flags;
812 rtm->rtm_errno = error;
813 rtm->rtm_addrs = info.rti_addrs;
815 route_proto.sp_protocol = sa ? sa->sa_family : 0;
816 raw_input(m, &route_proto, &route_src, &route_dst);
820 * This is called to generate messages from the routing socket
821 * indicating a network interface has had addresses associated with it.
822 * if we ever reverse the logic and replace messages TO the routing
823 * socket indicate a request to configure interfaces, then it will
824 * be unnecessary as the routing socket will automatically generate
828 rt_newaddrmsg(cmd, ifa, error, rt)
833 if (route_cb.any_count == 0)
836 if (cmd == RTM_ADD) {
837 rt_ifamsg(RTM_NEWADDR, ifa);
838 rt_rtmsg(RTM_ADD, ifa, error, rt);
840 KASSERT((cmd == RTM_DELETE), ("unknown cmd %d", cmd));
841 rt_rtmsg(RTM_DELETE, ifa, error, rt);
842 rt_ifamsg(RTM_DELADDR, ifa);
847 * This is the analogue to the rt_newaddrmsg which performs the same
848 * function but for multicast group memberhips. This is easier since
849 * there is no route state to worry about.
852 rt_newmaddrmsg(cmd, ifma)
854 struct ifmultiaddr *ifma;
856 struct rt_addrinfo info;
857 struct mbuf *m = NULL;
858 struct ifnet *ifp = ifma->ifma_ifp;
859 struct ifma_msghdr *ifmam;
861 if (route_cb.any_count == 0)
864 bzero(&info, sizeof(info));
865 info.sa_ifaaddr = ifma->ifma_addr;
866 if (ifp != NULL && TAILQ_FIRST(&ifp->if_addrhead) != NULL)
867 info.sa_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
869 info.sa_ifpaddr = NULL;
871 * If a link-layer address is present, present it as a ``gateway''
872 * (similarly to how ARP entries, e.g., are presented).
874 info.sa_gateway = ifma->ifma_lladdr;
875 if ((m = rt_msg1(cmd, &info)) == NULL)
877 ifmam = mtod(m, struct ifma_msghdr *);
878 ifmam->ifmam_index = ifp->if_index;
879 ifmam->ifmam_addrs = info.rti_addrs;
880 route_proto.sp_protocol = ifma->ifma_addr->sa_family;
881 raw_input(m, &route_proto, &route_src, &route_dst);
885 * This is called to generate routing socket messages indicating
886 * network interface arrival and departure.
889 rt_ifannouncemsg(ifp, what)
893 struct if_announcemsghdr *ifan;
895 struct rt_addrinfo info;
897 if (route_cb.any_count == 0)
899 bzero(&info, sizeof(info));
900 m = rt_msg1(RTM_IFANNOUNCE, &info);
903 ifan = mtod(m, struct if_announcemsghdr *);
904 ifan->ifan_index = ifp->if_index;
905 strlcpy(ifan->ifan_name, ifp->if_xname, sizeof(ifan->ifan_name));
906 ifan->ifan_what = what;
907 route_proto.sp_protocol = 0;
908 raw_input(m, &route_proto, &route_src, &route_dst);
912 * This is used in dumping the kernel table via sysctl().
915 sysctl_dumpentry(rn, vw)
916 struct radix_node *rn;
919 struct walkarg *w = vw;
920 struct rtentry *rt = (struct rtentry *)rn;
922 struct rt_addrinfo info;
924 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
926 bzero(&info, sizeof(info));
927 info.sa_dst = rt_key(rt);
928 info.sa_gateway = rt->rt_gateway;
929 info.sa_netmask = rt_mask(rt);
930 info.sa_genmask = rt->rt_genmask;
931 if (rt->rt_ifp != NULL) {
933 TAILQ_FIRST(&rt->rt_ifp->if_addrhead)->ifa_addr;
934 info.sa_ifaaddr = rt->rt_ifa->ifa_addr;
935 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
936 info.sa_bcastaddr = rt->rt_ifa->ifa_dstaddr;
938 size = rt_msg2(RTM_GET, &info, NULL, w);
939 if (w->w_req != NULL && w->w_tmem != NULL) {
940 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
942 rtm->rtm_flags = rt->rt_flags;
943 rtm->rtm_use = rt->rt_use;
944 rtm->rtm_rmx = rt->rt_rmx;
945 rtm->rtm_index = rt->rt_ifp->if_index;
946 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
947 rtm->rtm_addrs = info.rti_addrs;
948 error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);
961 struct rt_addrinfo info;
964 bzero(&info, sizeof(info));
965 TAILQ_FOREACH(ifp, &ifnet, if_link) {
966 if (w->w_arg && w->w_arg != ifp->if_index)
968 ifa = TAILQ_FIRST(&ifp->if_addrhead);
969 info.sa_ifpaddr = ifa->ifa_addr;
970 len = rt_msg2(RTM_IFINFO, &info, NULL, w);
971 info.sa_ifpaddr = NULL;
972 if (w->w_req != NULL && w->w_tmem != NULL) {
973 struct if_msghdr *ifm;
975 ifm = (struct if_msghdr *)w->w_tmem;
976 ifm->ifm_index = ifp->if_index;
977 ifm->ifm_flags = (u_short)ifp->if_flags;
978 ifm->ifm_data = ifp->if_data;
979 ifm->ifm_addrs = info.rti_addrs;
980 error = SYSCTL_OUT(w->w_req,(caddr_t)ifm, len);
984 while ((ifa = TAILQ_NEXT(ifa, ifa_link)) != NULL) {
985 if (af && af != ifa->ifa_addr->sa_family)
987 if (curproc->p_ucred->cr_prison && prison_if(curthread, ifa->ifa_addr))
989 info.sa_ifaaddr = ifa->ifa_addr;
990 info.sa_netmask = ifa->ifa_netmask;
991 info.sa_bcastaddr = ifa->ifa_dstaddr;
992 len = rt_msg2(RTM_NEWADDR, &info, NULL, w);
993 if (w->w_req && w->w_tmem) {
994 struct ifa_msghdr *ifam;
996 ifam = (struct ifa_msghdr *)w->w_tmem;
997 ifam->ifam_index = ifa->ifa_ifp->if_index;
998 ifam->ifam_flags = ifa->ifa_flags;
999 ifam->ifam_metric = ifa->ifa_metric;
1000 ifam->ifam_addrs = info.rti_addrs;
1001 error = SYSCTL_OUT(w->w_req, w->w_tmem, len);
1006 info.sa_netmask = info.sa_ifaaddr = info.sa_bcastaddr = NULL;
1012 sysctl_rtsock(SYSCTL_HANDLER_ARGS)
1014 int *name = (int *)arg1;
1015 u_int namelen = arg2;
1016 struct radix_node_head *rnh;
1017 int i, s, error = EINVAL;
1028 bzero(&w, sizeof(w));
1038 for (i = 1; i <= AF_MAX; i++)
1039 if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
1040 (error = rnh->rnh_walktree(rnh,
1041 sysctl_dumpentry, &w)))
1046 error = sysctl_iflist(af, &w);
1050 free(w.w_tmem, M_RTABLE);
1054 SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, "");
1057 * Definitions of protocols supported in the ROUTE domain.
1060 extern struct domain routedomain; /* or at least forward */
1062 static struct protosw routesw[] = {
1063 { SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
1064 0, route_output, raw_ctlinput, 0,
1071 static struct domain routedomain =
1072 { PF_ROUTE, "route", 0, 0, 0,
1073 routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] };