1 //==========================================================================
3 // src/sys/net/rtsock.c
5 //==========================================================================
6 //####BSDCOPYRIGHTBEGIN####
8 // -------------------------------------------
10 // Portions of this software may have been derived from OpenBSD,
11 // FreeBSD or other sources, and are covered by the appropriate
12 // copyright disclaimers included herein.
14 // Portions created by Red Hat are
15 // Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
17 // -------------------------------------------
19 //####BSDCOPYRIGHTEND####
20 //==========================================================================
23 * Copyright (c) 1988, 1991, 1993
24 * The Regents of the University of California. All rights reserved.
26 * Redistribution and use in source and binary forms, with or without
27 * modification, are permitted provided that the following conditions
29 * 1. Redistributions of source code must retain the above copyright
30 * notice, this list of conditions and the following disclaimer.
31 * 2. Redistributions in binary form must reproduce the above copyright
32 * notice, this list of conditions and the following disclaimer in the
33 * documentation and/or other materials provided with the distribution.
34 * 3. All advertising materials mentioning features or use of this software
35 * must display the following acknowledgement:
36 * This product includes software developed by the University of
37 * California, Berkeley and its contributors.
38 * 4. Neither the name of the University nor the names of its contributors
39 * may be used to endorse or promote products derived from this software
40 * without specific prior written permission.
42 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
43 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54 * @(#)rtsock.c 8.5 (Berkeley) 11/2/94
55 * $FreeBSD: src/sys/net/rtsock.c,v 1.44.2.4 2001/07/11 09:37:37 ume Exp $
59 #include <sys/param.h>
60 #include <sys/sysctl.h>
61 #include <sys/malloc.h>
63 #include <sys/socket.h>
64 #include <sys/socketvar.h>
65 #include <sys/domain.h>
66 #include <sys/protosw.h>
69 #include <net/route.h>
70 #include <net/raw_cb.h>
72 static struct sockaddr route_dst = { 2, PF_ROUTE, };
73 static struct sockaddr route_src = { 2, PF_ROUTE, };
74 static struct sockaddr sa_zero = { sizeof(sa_zero), AF_INET, };
75 static struct sockproto route_proto = { PF_ROUTE, };
81 struct sysctl_req *w_req;
85 rt_msg1 __P((int, struct rt_addrinfo *));
86 static int rt_msg2 __P((int,
87 struct rt_addrinfo *, caddr_t, struct walkarg *));
88 static int rt_xaddrs __P((caddr_t, caddr_t, struct rt_addrinfo *));
89 #ifdef CYGPKG_NET_FREEBSD_SYSCTL
90 static int sysctl_dumpentry __P((struct radix_node *rn, void *vw));
91 static int sysctl_iflist __P((int af, struct walkarg *w));
93 static int route_output __P((struct mbuf *, struct socket *));
94 static void rt_setmetrics __P((u_long, struct rt_metrics *, struct rt_metrics *));
96 /* Sleazy use of local variables throughout file, warning!!!! */
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]
106 * It really doesn't make any sense at all for this code to share much
107 * with raw_usrreq.c, since its functionality is so restricted. XXX
110 rts_abort(struct socket *so)
114 error = raw_usrreqs.pru_abort(so);
119 /* pru_accept is EOPNOTSUPP */
122 rts_attach(struct socket *so, int proto, struct proc *p)
127 if (sotorawcb(so) != 0)
128 return EISCONN; /* XXX panic? */
129 MALLOC(rp, struct rawcb *, sizeof *rp, M_PCB, M_WAITOK); /* XXX */
132 bzero(rp, sizeof *rp);
135 * The splnet() is necessary to block protocols from sending
136 * error notifications (like RTM_REDIRECT or RTM_LOSING) while
137 * this PCB is extant but incompletely initialized.
138 * Probably we should try to do more of this work beforehand and
142 so->so_pcb = (caddr_t)rp;
143 error = raw_usrreqs.pru_attach(so, proto, p);
150 switch(rp->rcb_proto.sp_protocol) {
155 route_cb.ip6_count++;
158 route_cb.ipx_count++;
164 rp->rcb_faddr = &route_src;
165 route_cb.any_count++;
167 so->so_options |= SO_USELOOPBACK;
173 rts_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
177 error = raw_usrreqs.pru_bind(so, nam, p); /* xxx just EINVAL */
183 rts_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
187 error = raw_usrreqs.pru_connect(so, nam, p); /* XXX just EINVAL */
192 /* pru_connect2 is EOPNOTSUPP */
193 /* pru_control is EOPNOTSUPP */
196 rts_detach(struct socket *so)
198 struct rawcb *rp = sotorawcb(so);
203 switch(rp->rcb_proto.sp_protocol) {
208 route_cb.ip6_count--;
211 route_cb.ipx_count--;
217 route_cb.any_count--;
219 error = raw_usrreqs.pru_detach(so);
225 rts_disconnect(struct socket *so)
229 error = raw_usrreqs.pru_disconnect(so);
234 /* pru_listen is EOPNOTSUPP */
237 rts_peeraddr(struct socket *so, struct sockaddr **nam)
241 error = raw_usrreqs.pru_peeraddr(so, nam);
246 /* pru_rcvd is EOPNOTSUPP */
247 /* pru_rcvoob is EOPNOTSUPP */
250 rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
251 struct mbuf *control, struct proc *p)
255 error = raw_usrreqs.pru_send(so, flags, m, nam, control, p);
260 /* pru_sense is null */
263 rts_shutdown(struct socket *so)
267 error = raw_usrreqs.pru_shutdown(so);
273 rts_sockaddr(struct socket *so, struct sockaddr **nam)
277 error = raw_usrreqs.pru_sockaddr(so, nam);
282 static struct pr_usrreqs route_usrreqs = {
283 rts_abort, pru_accept_notsupp, rts_attach, rts_bind, rts_connect,
284 pru_connect2_notsupp, pru_control_notsupp, rts_detach, rts_disconnect,
285 pru_listen_notsupp, rts_peeraddr, pru_rcvd_notsupp, pru_rcvoob_notsupp,
286 rts_send, pru_sense_null, rts_shutdown, rts_sockaddr,
287 sosend, soreceive, sopoll
293 register struct mbuf *m;
296 register struct rt_msghdr *rtm = 0;
297 register struct rtentry *rt = 0;
298 struct rtentry *saved_nrt = 0;
299 struct radix_node_head *rnh;
300 struct rt_addrinfo info;
302 struct ifnet *ifp = 0;
303 struct ifaddr *ifa = 0;
305 #define senderr(e) { error = e; goto flush;}
306 if (m == 0 || ((m->m_len < sizeof(long)) &&
307 (m = m_pullup(m, sizeof(long))) == 0))
309 if ((m->m_flags & M_PKTHDR) == 0)
310 panic("route_output");
311 len = m->m_pkthdr.len;
312 if (len < sizeof(*rtm) ||
313 len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
317 R_Malloc(rtm, struct rt_msghdr *, len);
322 m_copydata(m, 0, len, (caddr_t)rtm);
323 if (rtm->rtm_version != RTM_VERSION) {
325 senderr(EPROTONOSUPPORT);
328 info.rti_addrs = rtm->rtm_addrs;
329 if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) {
333 if (dst == 0 || (dst->sa_family >= AF_MAX)
334 || (gate != 0 && (gate->sa_family >= AF_MAX)))
337 struct radix_node *t;
338 t = rn_addmask((caddr_t)genmask, 0, 1);
339 if (t && genmask->sa_len >= ((struct sockaddr *)t->rn_key)->sa_len &&
340 Bcmp((caddr_t *)genmask + 1, (caddr_t *)t->rn_key + 1,
341 ((struct sockaddr *)t->rn_key)->sa_len) - 1)
342 genmask = (struct sockaddr *)(t->rn_key);
346 switch (rtm->rtm_type) {
351 error = rtrequest(RTM_ADD, dst, gate, netmask,
352 rtm->rtm_flags, &saved_nrt);
353 if (error == 0 && saved_nrt) {
354 rt_setmetrics(rtm->rtm_inits,
355 &rtm->rtm_rmx, &saved_nrt->rt_rmx);
356 saved_nrt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
357 saved_nrt->rt_rmx.rmx_locks |=
358 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
359 saved_nrt->rt_refcnt--;
360 saved_nrt->rt_genmask = genmask;
365 error = rtrequest(RTM_DELETE, dst, gate, netmask,
366 rtm->rtm_flags, &saved_nrt);
368 if ((rt = saved_nrt))
377 if ((rnh = rt_tables[dst->sa_family]) == 0) {
378 senderr(EAFNOSUPPORT);
379 } else if ((rt = (struct rtentry *)
380 rnh->rnh_lookup(dst, netmask, rnh)) != NULL)
384 switch(rtm->rtm_type) {
389 gate = rt->rt_gateway;
390 netmask = rt_mask(rt);
391 genmask = rt->rt_genmask;
392 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
395 ifpaddr = ifp->if_addrhead.tqh_first->ifa_addr;
396 ifaaddr = rt->rt_ifa->ifa_addr;
397 rtm->rtm_index = ifp->if_index;
403 len = rt_msg2(rtm->rtm_type, &info, (caddr_t)0,
404 (struct walkarg *)0);
405 if (len > rtm->rtm_msglen) {
406 struct rt_msghdr *new_rtm;
407 R_Malloc(new_rtm, struct rt_msghdr *, len);
410 Bcopy(rtm, new_rtm, rtm->rtm_msglen);
411 R_Free(rtm); rtm = new_rtm;
413 (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm,
414 (struct walkarg *)0);
415 rtm->rtm_flags = rt->rt_flags;
416 rtm->rtm_rmx = rt->rt_rmx;
417 rtm->rtm_addrs = info.rti_addrs;
421 if (gate && (error = rt_setgate(rt, rt_key(rt), gate)))
425 * If they tried to change things but didn't specify
426 * the required gateway, then just use the old one.
427 * This can happen if the user tries to change the
428 * flags on the default route without changing the
429 * default gateway. Changing flags still doesn't work.
431 if ((rt->rt_flags & RTF_GATEWAY) && !gate)
432 gate = rt->rt_gateway;
434 /* new gateway could require new ifaddr, ifp;
435 flags may also be different; ifp may be specified
436 by ll sockaddr when protocol address is ambiguous */
437 if (ifpaddr && (ifa = ifa_ifwithnet(ifpaddr)) &&
438 (ifp = ifa->ifa_ifp) && (ifaaddr || gate))
439 ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate,
441 else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) ||
442 (gate && (ifa = ifa_ifwithroute(rt->rt_flags,
446 register struct ifaddr *oifa = rt->rt_ifa;
448 if (oifa && oifa->ifa_rtrequest)
449 oifa->ifa_rtrequest(RTM_DELETE,
457 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
459 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
460 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, gate);
462 rt->rt_genmask = genmask;
467 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
468 rt->rt_rmx.rmx_locks |=
469 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
481 rtm->rtm_errno = error;
483 rtm->rtm_flags |= RTF_DONE;
488 register struct rawcb *rp = 0;
490 * Check to see if we don't want our own messages.
492 if ((so->so_options & SO_USELOOPBACK) == 0) {
493 if (route_cb.any_count <= 1) {
499 /* There is another listener, so construct message */
503 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
504 if (m->m_pkthdr.len < rtm->rtm_msglen) {
507 } else if (m->m_pkthdr.len > rtm->rtm_msglen)
508 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
512 rp->rcb_proto.sp_family = 0; /* Avoid us */
514 route_proto.sp_protocol = dst->sa_family;
516 raw_input(m, &route_proto, &route_src, &route_dst);
518 rp->rcb_proto.sp_family = PF_ROUTE;
524 rt_setmetrics(which, in, out)
526 register struct rt_metrics *in, *out;
528 #define metric(f, e) if (which & (f)) out->e = in->e;
529 metric(RTV_RPIPE, rmx_recvpipe);
530 metric(RTV_SPIPE, rmx_sendpipe);
531 metric(RTV_SSTHRESH, rmx_ssthresh);
532 metric(RTV_RTT, rmx_rtt);
533 metric(RTV_RTTVAR, rmx_rttvar);
534 metric(RTV_HOPCOUNT, rmx_hopcount);
535 metric(RTV_MTU, rmx_mtu);
536 metric(RTV_EXPIRE, rmx_expire);
541 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
542 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
546 * Extract the addresses of the passed sockaddrs.
547 * Do a little sanity checking so as to avoid bad memory references.
548 * This data is derived straight from userland.
551 rt_xaddrs(cp, cplim, rtinfo)
552 register caddr_t cp, cplim;
553 register struct rt_addrinfo *rtinfo;
555 register struct sockaddr *sa;
558 bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
559 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
560 if ((rtinfo->rti_addrs & (1 << i)) == 0)
562 sa = (struct sockaddr *)cp;
566 if ( (cp + sa->sa_len) > cplim ) {
571 * there are no more.. quit now
572 * If there are more bits, they are in error.
573 * I've seen this. route(1) can evidently generate these.
574 * This causes kernel to core dump.
575 * for compatibility, If we see this, point to a safe address.
577 if (sa->sa_len == 0) {
578 rtinfo->rti_info[i] = &sa_zero;
579 return (0); /* should be EINVAL but for compat */
583 rtinfo->rti_info[i] = sa;
590 rt_msg1(type, rtinfo)
592 register struct rt_addrinfo *rtinfo;
594 register struct rt_msghdr *rtm;
595 register struct mbuf *m;
597 register struct sockaddr *sa;
604 len = sizeof(struct ifa_msghdr);
609 len = sizeof(struct ifma_msghdr);
613 len = sizeof(struct if_msghdr);
617 len = sizeof(struct rt_msghdr);
621 m = m_gethdr(M_DONTWAIT, MT_DATA);
622 if (m && len > MHLEN) {
623 MCLGET(m, M_DONTWAIT);
624 if ((m->m_flags & M_EXT) == 0) {
631 m->m_pkthdr.len = m->m_len = len;
632 m->m_pkthdr.rcvif = 0;
633 rtm = mtod(m, struct rt_msghdr *);
634 bzero((caddr_t)rtm, len);
635 for (i = 0; i < RTAX_MAX; i++) {
636 if ((sa = rtinfo->rti_info[i]) == NULL)
638 rtinfo->rti_addrs |= (1 << i);
639 dlen = ROUNDUP(sa->sa_len);
640 m_copyback(m, len, dlen, (caddr_t)sa);
643 if (m->m_pkthdr.len != len) {
647 rtm->rtm_msglen = len;
648 rtm->rtm_version = RTM_VERSION;
649 rtm->rtm_type = type;
654 rt_msg2(type, rtinfo, cp, w)
656 register struct rt_addrinfo *rtinfo;
661 int len, dlen, second_time = 0;
664 rtinfo->rti_addrs = 0;
670 len = sizeof(struct ifa_msghdr);
674 len = sizeof(struct if_msghdr);
678 len = sizeof(struct rt_msghdr);
683 for (i = 0; i < RTAX_MAX; i++) {
684 register struct sockaddr *sa;
686 if ((sa = rtinfo->rti_info[i]) == 0)
688 rtinfo->rti_addrs |= (1 << i);
689 dlen = ROUNDUP(sa->sa_len);
691 bcopy((caddr_t)sa, cp, (unsigned)dlen);
696 if (cp == 0 && w != NULL && !second_time) {
697 register struct walkarg *rw = w;
700 if (rw->w_tmemsize < len) {
702 free(rw->w_tmem, M_RTABLE);
703 rw->w_tmem = (caddr_t)
704 malloc(len, M_RTABLE, M_NOWAIT);
706 rw->w_tmemsize = len;
716 register struct rt_msghdr *rtm = (struct rt_msghdr *)cp0;
718 rtm->rtm_version = RTM_VERSION;
719 rtm->rtm_type = type;
720 rtm->rtm_msglen = len;
726 * This routine is called to generate a message from the routing
727 * socket indicating that a redirect has occured, a routing lookup
728 * has failed, or that a protocol has detected timeouts to a particular
732 rt_missmsg(type, rtinfo, flags, error)
733 int type, flags, error;
734 register struct rt_addrinfo *rtinfo;
736 register struct rt_msghdr *rtm;
737 register struct mbuf *m;
738 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
740 if (route_cb.any_count == 0)
742 m = rt_msg1(type, rtinfo);
745 rtm = mtod(m, struct rt_msghdr *);
746 rtm->rtm_flags = RTF_DONE | flags;
747 rtm->rtm_errno = error;
748 rtm->rtm_addrs = rtinfo->rti_addrs;
749 route_proto.sp_protocol = sa ? sa->sa_family : 0;
750 raw_input(m, &route_proto, &route_src, &route_dst);
754 * This routine is called to generate a message from the routing
755 * socket indicating that the status of a network interface has changed.
759 register struct ifnet *ifp;
761 register struct if_msghdr *ifm;
763 struct rt_addrinfo info;
765 if (route_cb.any_count == 0)
767 bzero((caddr_t)&info, sizeof(info));
768 m = rt_msg1(RTM_IFINFO, &info);
771 ifm = mtod(m, struct if_msghdr *);
772 ifm->ifm_index = ifp->if_index;
773 ifm->ifm_flags = (u_short)ifp->if_flags;
774 ifm->ifm_data = ifp->if_data;
776 route_proto.sp_protocol = 0;
777 raw_input(m, &route_proto, &route_src, &route_dst);
781 * This is called to generate messages from the routing socket
782 * indicating a network interface has had addresses associated with it.
783 * if we ever reverse the logic and replace messages TO the routing
784 * socket indicate a request to configure interfaces, then it will
785 * be unnecessary as the routing socket will automatically generate
789 rt_newaddrmsg(cmd, ifa, error, rt)
791 register struct ifaddr *ifa;
792 register struct rtentry *rt;
794 struct rt_addrinfo info;
795 struct sockaddr *sa = 0;
798 struct ifnet *ifp = ifa->ifa_ifp;
800 if (route_cb.any_count == 0)
802 for (pass = 1; pass < 3; pass++) {
803 bzero((caddr_t)&info, sizeof(info));
804 if ((cmd == RTM_ADD && pass == 1) ||
805 (cmd == RTM_DELETE && pass == 2)) {
806 register struct ifa_msghdr *ifam;
807 int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR;
809 ifaaddr = sa = ifa->ifa_addr;
810 ifpaddr = ifp->if_addrhead.tqh_first->ifa_addr;
811 netmask = ifa->ifa_netmask;
812 brdaddr = ifa->ifa_dstaddr;
813 if ((m = rt_msg1(ncmd, &info)) == NULL)
815 ifam = mtod(m, struct ifa_msghdr *);
816 ifam->ifam_index = ifp->if_index;
817 ifam->ifam_metric = ifa->ifa_metric;
818 ifam->ifam_flags = ifa->ifa_flags;
819 ifam->ifam_addrs = info.rti_addrs;
821 if ((cmd == RTM_ADD && pass == 2) ||
822 (cmd == RTM_DELETE && pass == 1)) {
823 register struct rt_msghdr *rtm;
827 netmask = rt_mask(rt);
828 dst = sa = rt_key(rt);
829 gate = rt->rt_gateway;
830 if ((m = rt_msg1(cmd, &info)) == NULL)
832 rtm = mtod(m, struct rt_msghdr *);
833 rtm->rtm_index = ifp->if_index;
834 rtm->rtm_flags |= rt->rt_flags;
835 rtm->rtm_errno = error;
836 rtm->rtm_addrs = info.rti_addrs;
838 route_proto.sp_protocol = sa ? sa->sa_family : 0;
839 raw_input(m, &route_proto, &route_src, &route_dst);
844 * This is the analogue to the rt_newaddrmsg which performs the same
845 * function but for multicast group memberhips. This is easier since
846 * there is no route state to worry about.
849 rt_newmaddrmsg(cmd, ifma)
851 struct ifmultiaddr *ifma;
853 struct rt_addrinfo info;
855 struct ifnet *ifp = ifma->ifma_ifp;
856 struct ifma_msghdr *ifmam;
858 if (route_cb.any_count == 0)
861 bzero((caddr_t)&info, sizeof(info));
862 ifaaddr = ifma->ifma_addr;
863 if (ifp && ifp->if_addrhead.tqh_first)
864 ifpaddr = ifp->if_addrhead.tqh_first->ifa_addr;
868 * If a link-layer address is present, present it as a ``gateway''
869 * (similarly to how ARP entries, e.g., are presented).
871 gate = ifma->ifma_lladdr;
872 if ((m = rt_msg1(cmd, &info)) == NULL)
874 ifmam = mtod(m, struct ifma_msghdr *);
875 ifmam->ifmam_index = ifp->if_index;
876 ifmam->ifmam_addrs = info.rti_addrs;
877 route_proto.sp_protocol = ifma->ifma_addr->sa_family;
878 raw_input(m, &route_proto, &route_src, &route_dst);
881 #ifdef CYGPKG_NET_FREEBSD_SYSCTL
883 * This is used in dumping the kernel table via sysctl().
886 sysctl_dumpentry(rn, vw)
887 struct radix_node *rn;
890 register struct walkarg *w = vw;
891 register struct rtentry *rt = (struct rtentry *)rn;
893 struct rt_addrinfo info;
895 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
897 bzero((caddr_t)&info, sizeof(info));
899 gate = rt->rt_gateway;
900 netmask = rt_mask(rt);
901 genmask = rt->rt_genmask;
902 size = rt_msg2(RTM_GET, &info, 0, w);
903 if (w->w_req && w->w_tmem) {
904 register struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
906 rtm->rtm_flags = rt->rt_flags;
907 rtm->rtm_use = rt->rt_use;
908 rtm->rtm_rmx = rt->rt_rmx;
909 rtm->rtm_index = rt->rt_ifp->if_index;
910 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
911 rtm->rtm_addrs = info.rti_addrs;
912 error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);
921 register struct walkarg *w;
923 register struct ifnet *ifp;
924 register struct ifaddr *ifa;
925 struct rt_addrinfo info;
928 bzero((caddr_t)&info, sizeof(info));
929 for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_link.tqe_next) {
930 if (w->w_arg && w->w_arg != ifp->if_index)
932 ifa = ifp->if_addrhead.tqh_first;
933 ifpaddr = ifa->ifa_addr;
934 len = rt_msg2(RTM_IFINFO, &info, (caddr_t)0, w);
936 if (w->w_req && w->w_tmem) {
937 register struct if_msghdr *ifm;
939 ifm = (struct if_msghdr *)w->w_tmem;
940 ifm->ifm_index = ifp->if_index;
941 ifm->ifm_flags = (u_short)ifp->if_flags;
942 ifm->ifm_data = ifp->if_data;
943 ifm->ifm_addrs = info.rti_addrs;
944 error = SYSCTL_OUT(w->w_req,(caddr_t)ifm, len);
948 while ((ifa = ifa->ifa_link.tqe_next) != 0) {
949 if (af && af != ifa->ifa_addr->sa_family)
951 ifaaddr = ifa->ifa_addr;
952 netmask = ifa->ifa_netmask;
953 brdaddr = ifa->ifa_dstaddr;
954 len = rt_msg2(RTM_NEWADDR, &info, 0, w);
955 if (w->w_req && w->w_tmem) {
956 register struct ifa_msghdr *ifam;
958 ifam = (struct ifa_msghdr *)w->w_tmem;
959 ifam->ifam_index = ifa->ifa_ifp->if_index;
960 ifam->ifam_flags = ifa->ifa_flags;
961 ifam->ifam_metric = ifa->ifa_metric;
962 ifam->ifam_addrs = info.rti_addrs;
963 error = SYSCTL_OUT(w->w_req, w->w_tmem, len);
968 ifaaddr = netmask = brdaddr = 0;
974 sysctl_rtsock(SYSCTL_HANDLER_ARGS)
976 int *name = (int *)arg1;
977 u_int namelen = arg2;
978 register struct radix_node_head *rnh;
979 int i, s, error = EINVAL;
990 Bzero(&w, sizeof(w));
1000 for (i = 1; i <= AF_MAX; i++)
1001 if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
1002 (error = rnh->rnh_walktree(rnh,
1003 sysctl_dumpentry, &w)))
1008 error = sysctl_iflist(af, &w);
1012 free(w.w_tmem, M_RTABLE);
1017 SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, "");
1020 * Definitions of protocols supported in the ROUTE domain.
1023 static struct domain routedomain; /* or at least forward */
1025 static struct protosw routesw[] = {
1026 { SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
1027 0, route_output, raw_ctlinput, 0,
1034 static struct domain routedomain =
1035 { PF_ROUTE, "route", 0, 0, 0,
1036 routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] };