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 1.14 2004/06/03 15:04:51 joerg 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 (caddr_t, caddr_t, 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 *,
81 /* Sleazy use of local variables throughout file, warning!!!! */
82 #define dst info.rti_info[RTAX_DST]
83 #define gate info.rti_info[RTAX_GATEWAY]
84 #define netmask info.rti_info[RTAX_NETMASK]
85 #define genmask info.rti_info[RTAX_GENMASK]
86 #define ifpaddr info.rti_info[RTAX_IFP]
87 #define ifaaddr info.rti_info[RTAX_IFA]
88 #define brdaddr info.rti_info[RTAX_BRD]
91 * It really doesn't make any sense at all for this code to share much
92 * with raw_usrreq.c, since its functionality is so restricted. XXX
95 rts_abort(struct socket *so)
99 error = raw_usrreqs.pru_abort(so);
104 /* pru_accept is EOPNOTSUPP */
107 rts_attach(struct socket *so, int proto, struct pru_attach_info *ai)
112 if (sotorawcb(so) != 0)
113 return EISCONN; /* XXX panic? */
114 MALLOC(rp, struct rawcb *, sizeof *rp, M_PCB, M_WAITOK|M_ZERO);
119 * The splnet() is necessary to block protocols from sending
120 * error notifications (like RTM_REDIRECT or RTM_LOSING) while
121 * this PCB is extant but incompletely initialized.
122 * Probably we should try to do more of this work beforehand and
126 so->so_pcb = (caddr_t)rp;
127 error = raw_attach(so, proto, ai->sb_rlimit);
134 switch(rp->rcb_proto.sp_protocol) {
139 route_cb.ip6_count++;
142 route_cb.ipx_count++;
148 rp->rcb_faddr = &route_src;
149 route_cb.any_count++;
151 so->so_options |= SO_USELOOPBACK;
157 rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
161 error = raw_usrreqs.pru_bind(so, nam, td); /* xxx just EINVAL */
167 rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
171 error = raw_usrreqs.pru_connect(so, nam, td); /* XXX just EINVAL */
176 /* pru_connect2 is EOPNOTSUPP */
177 /* pru_control is EOPNOTSUPP */
180 rts_detach(struct socket *so)
182 struct rawcb *rp = sotorawcb(so);
187 switch(rp->rcb_proto.sp_protocol) {
192 route_cb.ip6_count--;
195 route_cb.ipx_count--;
201 route_cb.any_count--;
203 error = raw_usrreqs.pru_detach(so);
209 rts_disconnect(struct socket *so)
213 error = raw_usrreqs.pru_disconnect(so);
218 /* pru_listen is EOPNOTSUPP */
221 rts_peeraddr(struct socket *so, struct sockaddr **nam)
225 error = raw_usrreqs.pru_peeraddr(so, nam);
230 /* pru_rcvd is EOPNOTSUPP */
231 /* pru_rcvoob is EOPNOTSUPP */
234 rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
235 struct mbuf *control, struct thread *td)
239 error = raw_usrreqs.pru_send(so, flags, m, nam, control, td);
244 /* pru_sense is null */
247 rts_shutdown(struct socket *so)
251 error = raw_usrreqs.pru_shutdown(so);
257 rts_sockaddr(struct socket *so, struct sockaddr **nam)
261 error = raw_usrreqs.pru_sockaddr(so, nam);
266 static struct pr_usrreqs route_usrreqs = {
267 rts_abort, pru_accept_notsupp, rts_attach, rts_bind, rts_connect,
268 pru_connect2_notsupp, pru_control_notsupp, rts_detach, rts_disconnect,
269 pru_listen_notsupp, rts_peeraddr, pru_rcvd_notsupp, pru_rcvoob_notsupp,
270 rts_send, pru_sense_null, rts_shutdown, rts_sockaddr,
271 sosend, soreceive, sopoll
276 route_output(struct mbuf *m, struct socket *so, ...)
278 struct rt_msghdr *rtm = 0;
279 struct rtentry *rt = 0;
280 struct rtentry *saved_nrt = 0;
281 struct radix_node_head *rnh;
282 struct rt_addrinfo info;
284 struct ifnet *ifp = 0;
285 struct ifaddr *ifa = 0;
286 struct pr_output_info *oi;
290 oi = __va_arg(ap, struct pr_output_info *);
293 #define senderr(e) { error = e; goto flush;}
294 if (m == 0 || ((m->m_len < sizeof(long)) &&
295 (m = m_pullup(m, sizeof(long))) == 0))
297 if ((m->m_flags & M_PKTHDR) == 0)
298 panic("route_output");
299 len = m->m_pkthdr.len;
300 if (len < sizeof(*rtm) ||
301 len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
305 R_Malloc(rtm, struct rt_msghdr *, len);
310 m_copydata(m, 0, len, (caddr_t)rtm);
311 if (rtm->rtm_version != RTM_VERSION) {
313 senderr(EPROTONOSUPPORT);
315 rtm->rtm_pid = oi->p_pid;
316 bzero(&info, sizeof(info));
317 info.rti_addrs = rtm->rtm_addrs;
318 if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) {
322 info.rti_flags = rtm->rtm_flags;
323 if (dst == 0 || (dst->sa_family >= AF_MAX)
324 || (gate != 0 && (gate->sa_family >= AF_MAX)))
327 struct radix_node *t;
328 t = rn_addmask((caddr_t)genmask, 0, 1);
329 if (t && Bcmp((caddr_t *)genmask + 1, (caddr_t *)t->rn_key + 1,
330 *(u_char *)t->rn_key - 1) == 0)
331 genmask = (struct sockaddr *)(t->rn_key);
337 * Verify that the caller has the appropriate privilege; RTM_GET
338 * is the only operation the non-superuser is allowed.
340 if (rtm->rtm_type != RTM_GET && suser_cred(so->so_cred, 0) != 0)
343 switch (rtm->rtm_type) {
348 error = rtrequest1(RTM_ADD, &info, &saved_nrt);
349 if (error == 0 && saved_nrt) {
350 rt_setmetrics(rtm->rtm_inits,
351 &rtm->rtm_rmx, &saved_nrt->rt_rmx);
352 saved_nrt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
353 saved_nrt->rt_rmx.rmx_locks |=
354 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
355 saved_nrt->rt_refcnt--;
356 saved_nrt->rt_genmask = genmask;
361 error = rtrequest1(RTM_DELETE, &info, &saved_nrt);
363 if ((rt = saved_nrt))
372 if ((rnh = rt_tables[dst->sa_family]) == 0) {
373 senderr(EAFNOSUPPORT);
374 } else if ((rt = (struct rtentry *)
375 rnh->rnh_lookup(dst, netmask, rnh)) != NULL)
379 switch(rtm->rtm_type) {
384 gate = rt->rt_gateway;
385 netmask = rt_mask(rt);
386 genmask = rt->rt_genmask;
387 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
390 ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
391 ifaaddr = rt->rt_ifa->ifa_addr;
392 if (ifp->if_flags & IFF_POINTOPOINT)
393 brdaddr = rt->rt_ifa->ifa_dstaddr;
394 rtm->rtm_index = ifp->if_index;
400 len = rt_msg2(rtm->rtm_type, &info, (caddr_t)0,
401 (struct walkarg *)0);
402 if (len > rtm->rtm_msglen) {
403 struct rt_msghdr *new_rtm;
404 R_Malloc(new_rtm, struct rt_msghdr *, len);
407 Bcopy(rtm, new_rtm, rtm->rtm_msglen);
408 Free(rtm); rtm = new_rtm;
410 (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm,
411 (struct walkarg *)0);
412 rtm->rtm_flags = rt->rt_flags;
413 rtm->rtm_rmx = rt->rt_rmx;
414 rtm->rtm_addrs = info.rti_addrs;
418 /* new gateway could require new ifaddr, ifp;
419 flags may also be different; ifp may be specified
420 by ll sockaddr when protocol address is ambiguous */
421 #define equal(a1, a2) (bcmp((caddr_t)(a1), (caddr_t)(a2), (a1)->sa_len) == 0)
422 if ((rt->rt_flags & RTF_GATEWAY && gate != NULL) ||
425 !equal(ifaaddr, rt->rt_ifa->ifa_addr))) {
426 if ((error = rt_getifa(&info)) != 0)
430 (error = rt_setgate(rt, rt_key(rt), gate)) != 0)
432 if ((ifa = info.rti_ifa) != NULL) {
433 struct ifaddr *oifa = rt->rt_ifa;
435 if (oifa && oifa->ifa_rtrequest)
436 oifa->ifa_rtrequest(RTM_DELETE, rt,
441 rt->rt_ifp = info.rti_ifp;
444 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
446 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
447 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info);
449 rt->rt_genmask = genmask;
454 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
455 rt->rt_rmx.rmx_locks |=
456 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
468 rtm->rtm_errno = error;
470 rtm->rtm_flags |= RTF_DONE;
475 struct rawcb *rp = 0;
477 * Check to see if we don't want our own messages.
479 if ((so->so_options & SO_USELOOPBACK) == 0) {
480 if (route_cb.any_count <= 1) {
486 /* There is another listener, so construct message */
490 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
491 if (m->m_pkthdr.len < rtm->rtm_msglen) {
494 } else if (m->m_pkthdr.len > rtm->rtm_msglen)
495 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
499 rp->rcb_proto.sp_family = 0; /* Avoid us */
501 route_proto.sp_protocol = dst->sa_family;
503 raw_input(m, &route_proto, &route_src, &route_dst);
505 rp->rcb_proto.sp_family = PF_ROUTE;
511 rt_setmetrics(which, in, out)
513 struct rt_metrics *in, *out;
515 #define metric(f, e) if (which & (f)) out->e = in->e;
516 metric(RTV_RPIPE, rmx_recvpipe);
517 metric(RTV_SPIPE, rmx_sendpipe);
518 metric(RTV_SSTHRESH, rmx_ssthresh);
519 metric(RTV_RTT, rmx_rtt);
520 metric(RTV_RTTVAR, rmx_rttvar);
521 metric(RTV_HOPCOUNT, rmx_hopcount);
522 metric(RTV_MTU, rmx_mtu);
523 metric(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))
533 * Extract the addresses of the passed sockaddrs.
534 * Do a little sanity checking so as to avoid bad memory references.
535 * This data is derived straight from userland.
538 rt_xaddrs(cp, cplim, rtinfo)
540 struct rt_addrinfo *rtinfo;
545 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
546 if ((rtinfo->rti_addrs & (1 << i)) == 0)
548 sa = (struct sockaddr *)cp;
552 if ( (cp + sa->sa_len) > cplim ) {
557 * there are no more.. quit now
558 * If there are more bits, they are in error.
559 * I've seen this. route(1) can evidently generate these.
560 * This causes kernel to core dump.
561 * for compatibility, If we see this, point to a safe address.
563 if (sa->sa_len == 0) {
564 rtinfo->rti_info[i] = &sa_zero;
565 return (0); /* should be EINVAL but for compat */
569 rtinfo->rti_info[i] = sa;
576 rt_msg1(type, rtinfo)
578 struct rt_addrinfo *rtinfo;
580 struct rt_msghdr *rtm;
590 len = sizeof(struct ifa_msghdr);
595 len = sizeof(struct ifma_msghdr);
599 len = sizeof(struct if_msghdr);
603 len = sizeof(struct if_announcemsghdr);
607 len = sizeof(struct rt_msghdr);
611 m = m_gethdr(MB_DONTWAIT, MT_DATA);
612 if (m && len > MHLEN) {
613 MCLGET(m, MB_DONTWAIT);
614 if ((m->m_flags & M_EXT) == 0) {
621 m->m_pkthdr.len = m->m_len = len;
622 m->m_pkthdr.rcvif = 0;
623 rtm = mtod(m, struct rt_msghdr *);
624 bzero((caddr_t)rtm, len);
625 for (i = 0; i < RTAX_MAX; i++) {
626 if ((sa = rtinfo->rti_info[i]) == NULL)
628 rtinfo->rti_addrs |= (1 << i);
629 dlen = ROUNDUP(sa->sa_len);
630 m_copyback(m, len, dlen, (caddr_t)sa);
633 if (m->m_pkthdr.len != len) {
637 rtm->rtm_msglen = len;
638 rtm->rtm_version = RTM_VERSION;
639 rtm->rtm_type = type;
644 rt_msg2(type, rtinfo, cp, w)
646 struct rt_addrinfo *rtinfo;
651 int len, dlen, second_time = 0;
654 rtinfo->rti_addrs = 0;
660 len = sizeof(struct ifa_msghdr);
664 len = sizeof(struct if_msghdr);
668 len = sizeof(struct rt_msghdr);
673 for (i = 0; i < RTAX_MAX; i++) {
676 if ((sa = rtinfo->rti_info[i]) == 0)
678 rtinfo->rti_addrs |= (1 << i);
679 dlen = ROUNDUP(sa->sa_len);
681 bcopy((caddr_t)sa, cp, (unsigned)dlen);
687 if (cp == 0 && w != NULL && !second_time) {
688 struct walkarg *rw = w;
691 if (rw->w_tmemsize < len) {
693 free(rw->w_tmem, M_RTABLE);
694 rw->w_tmem = (caddr_t)malloc(len, M_RTABLE,
695 M_INTWAIT | M_NULLOK);
697 rw->w_tmemsize = len;
707 struct rt_msghdr *rtm = (struct rt_msghdr *)cp0;
709 rtm->rtm_version = RTM_VERSION;
710 rtm->rtm_type = type;
711 rtm->rtm_msglen = len;
717 * This routine is called to generate a message from the routing
718 * socket indicating that a redirect has occured, a routing lookup
719 * has failed, or that a protocol has detected timeouts to a particular
723 rt_missmsg(type, rtinfo, flags, error)
724 int type, flags, error;
725 struct rt_addrinfo *rtinfo;
727 struct rt_msghdr *rtm;
729 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
731 if (route_cb.any_count == 0)
733 m = rt_msg1(type, rtinfo);
736 rtm = mtod(m, struct rt_msghdr *);
737 rtm->rtm_flags = RTF_DONE | flags;
738 rtm->rtm_errno = error;
739 rtm->rtm_addrs = rtinfo->rti_addrs;
740 route_proto.sp_protocol = sa ? sa->sa_family : 0;
741 raw_input(m, &route_proto, &route_src, &route_dst);
745 * This routine is called to generate a message from the routing
746 * socket indicating that the status of a network interface has changed.
752 struct if_msghdr *ifm;
754 struct rt_addrinfo info;
756 if (route_cb.any_count == 0)
758 bzero((caddr_t)&info, sizeof(info));
759 m = rt_msg1(RTM_IFINFO, &info);
762 ifm = mtod(m, struct if_msghdr *);
763 ifm->ifm_index = ifp->if_index;
764 ifm->ifm_flags = (u_short)ifp->if_flags;
765 ifm->ifm_data = ifp->if_data;
767 route_proto.sp_protocol = 0;
768 raw_input(m, &route_proto, &route_src, &route_dst);
772 rt_ifamsg(int cmd, struct ifaddr *ifa)
774 struct ifa_msghdr *ifam;
775 struct rt_addrinfo info;
778 struct ifnet *ifp = ifa->ifa_ifp;
780 bzero(&info, sizeof(info));
781 ifaaddr = sa = ifa->ifa_addr;
782 ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
783 netmask = ifa->ifa_netmask;
784 brdaddr = ifa->ifa_dstaddr;
785 if ((m = rt_msg1(cmd, &info)) == NULL)
787 ifam = mtod(m, struct ifa_msghdr *);
788 ifam->ifam_index = ifp->if_index;
789 ifam->ifam_metric = ifa->ifa_metric;
790 ifam->ifam_flags = ifa->ifa_flags;
791 ifam->ifam_addrs = info.rti_addrs;
793 route_proto.sp_protocol = sa ? sa->sa_family : 0;
794 raw_input(m, &route_proto, &route_src, &route_dst);
798 rt_rtmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
800 struct rt_msghdr *rtm;
801 struct rt_addrinfo info;
804 struct ifnet *ifp = ifa->ifa_ifp;
808 bzero(&info, sizeof(info));
809 netmask = rt_mask(rt);
810 dst = sa = rt_key(rt);
811 gate = rt->rt_gateway;
812 if ((m = rt_msg1(cmd, &info)) == NULL)
814 rtm = mtod(m, struct rt_msghdr *);
815 rtm->rtm_index = ifp->if_index;
816 rtm->rtm_flags |= rt->rt_flags;
817 rtm->rtm_errno = error;
818 rtm->rtm_addrs = info.rti_addrs;
820 route_proto.sp_protocol = sa ? sa->sa_family : 0;
821 raw_input(m, &route_proto, &route_src, &route_dst);
825 * This is called to generate messages from the routing socket
826 * indicating a network interface has had addresses associated with it.
827 * if we ever reverse the logic and replace messages TO the routing
828 * socket indicate a request to configure interfaces, then it will
829 * be unnecessary as the routing socket will automatically generate
833 rt_newaddrmsg(cmd, ifa, error, rt)
838 if (route_cb.any_count == 0)
841 if (cmd == RTM_ADD) {
842 rt_ifamsg(RTM_NEWADDR, ifa);
843 rt_rtmsg(RTM_ADD, ifa, error, rt);
845 KASSERT((cmd == RTM_DELETE), ("unknown cmd %d", cmd));
846 rt_rtmsg(RTM_DELETE, ifa, error, rt);
847 rt_ifamsg(RTM_DELADDR, ifa);
852 * This is the analogue to the rt_newaddrmsg which performs the same
853 * function but for multicast group memberhips. This is easier since
854 * there is no route state to worry about.
857 rt_newmaddrmsg(cmd, ifma)
859 struct ifmultiaddr *ifma;
861 struct rt_addrinfo info;
863 struct ifnet *ifp = ifma->ifma_ifp;
864 struct ifma_msghdr *ifmam;
866 if (route_cb.any_count == 0)
869 bzero((caddr_t)&info, sizeof(info));
870 ifaaddr = ifma->ifma_addr;
871 if (ifp && TAILQ_FIRST(&ifp->if_addrhead))
872 ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr;
876 * If a link-layer address is present, present it as a ``gateway''
877 * (similarly to how ARP entries, e.g., are presented).
879 gate = ifma->ifma_lladdr;
880 if ((m = rt_msg1(cmd, &info)) == NULL)
882 ifmam = mtod(m, struct ifma_msghdr *);
883 ifmam->ifmam_index = ifp->if_index;
884 ifmam->ifmam_addrs = info.rti_addrs;
885 route_proto.sp_protocol = ifma->ifma_addr->sa_family;
886 raw_input(m, &route_proto, &route_src, &route_dst);
890 * This is called to generate routing socket messages indicating
891 * network interface arrival and departure.
894 rt_ifannouncemsg(ifp, what)
898 struct if_announcemsghdr *ifan;
900 struct rt_addrinfo info;
902 if (route_cb.any_count == 0)
904 bzero((caddr_t)&info, sizeof(info));
905 m = rt_msg1(RTM_IFANNOUNCE, &info);
908 ifan = mtod(m, struct if_announcemsghdr *);
909 ifan->ifan_index = ifp->if_index;
910 strlcpy(ifan->ifan_name, ifp->if_xname, sizeof(ifan->ifan_name));
911 ifan->ifan_what = what;
912 route_proto.sp_protocol = 0;
913 raw_input(m, &route_proto, &route_src, &route_dst);
917 * This is used in dumping the kernel table via sysctl().
920 sysctl_dumpentry(rn, vw)
921 struct radix_node *rn;
924 struct walkarg *w = vw;
925 struct rtentry *rt = (struct rtentry *)rn;
927 struct rt_addrinfo info;
929 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
931 bzero((caddr_t)&info, sizeof(info));
933 gate = rt->rt_gateway;
934 netmask = rt_mask(rt);
935 genmask = rt->rt_genmask;
937 ifpaddr = TAILQ_FIRST(&rt->rt_ifp->if_addrhead)->ifa_addr;
938 ifaaddr = rt->rt_ifa->ifa_addr;
939 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
940 brdaddr = rt->rt_ifa->ifa_dstaddr;
942 size = rt_msg2(RTM_GET, &info, 0, w);
943 if (w->w_req && w->w_tmem) {
944 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
946 rtm->rtm_flags = rt->rt_flags;
947 rtm->rtm_use = rt->rt_use;
948 rtm->rtm_rmx = rt->rt_rmx;
949 rtm->rtm_index = rt->rt_ifp->if_index;
950 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
951 rtm->rtm_addrs = info.rti_addrs;
952 error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);
965 struct rt_addrinfo info;
968 bzero((caddr_t)&info, sizeof(info));
969 TAILQ_FOREACH(ifp, &ifnet, if_link) {
970 if (w->w_arg && w->w_arg != ifp->if_index)
972 ifa = TAILQ_FIRST(&ifp->if_addrhead);
973 ifpaddr = ifa->ifa_addr;
974 len = rt_msg2(RTM_IFINFO, &info, (caddr_t)0, w);
976 if (w->w_req && w->w_tmem) {
977 struct if_msghdr *ifm;
979 ifm = (struct if_msghdr *)w->w_tmem;
980 ifm->ifm_index = ifp->if_index;
981 ifm->ifm_flags = (u_short)ifp->if_flags;
982 ifm->ifm_data = ifp->if_data;
983 ifm->ifm_addrs = info.rti_addrs;
984 error = SYSCTL_OUT(w->w_req,(caddr_t)ifm, len);
988 while ((ifa = TAILQ_NEXT(ifa, ifa_link)) != 0) {
989 if (af && af != ifa->ifa_addr->sa_family)
991 if (curproc->p_ucred->cr_prison && prison_if(curthread, ifa->ifa_addr))
993 ifaaddr = ifa->ifa_addr;
994 netmask = ifa->ifa_netmask;
995 brdaddr = ifa->ifa_dstaddr;
996 len = rt_msg2(RTM_NEWADDR, &info, 0, w);
997 if (w->w_req && w->w_tmem) {
998 struct ifa_msghdr *ifam;
1000 ifam = (struct ifa_msghdr *)w->w_tmem;
1001 ifam->ifam_index = ifa->ifa_ifp->if_index;
1002 ifam->ifam_flags = ifa->ifa_flags;
1003 ifam->ifam_metric = ifa->ifa_metric;
1004 ifam->ifam_addrs = info.rti_addrs;
1005 error = SYSCTL_OUT(w->w_req, w->w_tmem, len);
1010 ifaaddr = netmask = brdaddr = 0;
1016 sysctl_rtsock(SYSCTL_HANDLER_ARGS)
1018 int *name = (int *)arg1;
1019 u_int namelen = arg2;
1020 struct radix_node_head *rnh;
1021 int i, s, error = EINVAL;
1032 Bzero(&w, sizeof(w));
1042 for (i = 1; i <= AF_MAX; i++)
1043 if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
1044 (error = rnh->rnh_walktree(rnh,
1045 sysctl_dumpentry, &w)))
1050 error = sysctl_iflist(af, &w);
1054 free(w.w_tmem, M_RTABLE);
1058 SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, "");
1061 * Definitions of protocols supported in the ROUTE domain.
1064 extern struct domain routedomain; /* or at least forward */
1066 static struct protosw routesw[] = {
1067 { SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
1068 0, route_output, raw_ctlinput, 0,
1075 static struct domain routedomain =
1076 { PF_ROUTE, "route", 0, 0, 0,
1077 routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] };