2 * Copyright (c) 1985, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Copyright (c) 1995 John Hay. All rights reserved.
7 * This file includes significant work done at Cornell University by
8 * Bill Nesheim. That work included by permission.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * $FreeBSD: src/usr.sbin/IPXrouted/startup.c,v 1.8.2.1 2000/07/01 10:46:25 ps Exp $
42 static char sccsid[] = "@(#)startup.c 8.1 (Berkeley) 6/5/93";
46 * Routing Table Management Daemon
50 #include <sys/param.h>
51 #include <sys/ioctl.h>
52 #include <sys/sysctl.h>
56 #include <net/if_dl.h>
62 struct interface *ifnet;
63 int lookforinterfaces = 1;
66 int externalinterfaces = 0; /* # of remote and local interfaces */
74 (void) fprintf(stderr, "IPXroute: ");
76 (void) fprintf(stderr, "%s: ", s);
77 (void) fprintf(stderr, "%s\n", strerror(sverrno));
82 struct rt_addrinfo info;
83 /* Sleazy use of local variables throughout file, warning!!!! */
84 #define netmask info.rti_info[RTAX_NETMASK]
85 #define ifaaddr info.rti_info[RTAX_IFA]
86 #define brdaddr info.rti_info[RTAX_BRD]
89 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
90 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
93 rt_xaddrs(cp, cplim, rtinfo)
94 register caddr_t cp, cplim;
95 register struct rt_addrinfo *rtinfo;
97 register struct sockaddr *sa;
100 bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
101 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
102 if ((rtinfo->rti_addrs & (1 << i)) == 0)
104 rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
110 * Find the network interfaces which have configured themselves.
111 * If the interface is present but not yet up (for example an
112 * ARPANET IMP), set the lookforinterfaces flag so we'll
113 * come back later and look again.
118 struct interface ifs, *ifp;
120 int mib[6], no_ipxaddr = 0, flags = 0;
121 char *buf, *cplim, *cp;
122 register struct if_msghdr *ifm;
123 register struct ifa_msghdr *ifam;
124 struct sockaddr_dl *sdl = 0;
130 mib[4] = NET_RT_IFLIST;
132 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
133 quit("route-sysctl-estimate");
134 if ((buf = malloc(needed)) == NULL)
136 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
137 lookforinterfaces = 0;
138 cplim = buf + needed;
139 for (cp = buf; cp < cplim; cp += ifm->ifm_msglen) {
140 ifm = (struct if_msghdr *)cp;
141 if (ifm->ifm_type == RTM_IFINFO) {
142 bzero(&ifs, sizeof(ifs));
143 ifs.int_flags = flags = ifm->ifm_flags | IFF_INTERFACE;
144 if ((flags & IFF_UP) == 0 || no_ipxaddr)
145 lookforinterfaces = 1;
146 sdl = (struct sockaddr_dl *) (ifm + 1);
147 sdl->sdl_data[sdl->sdl_nlen] = 0;
151 if (ifm->ifm_type != RTM_NEWADDR)
152 quit("ifinit: out of sync");
153 if ((flags & IFF_UP) == 0)
155 ifam = (struct ifa_msghdr *)ifm;
156 info.rti_addrs = ifam->ifam_addrs;
157 rt_xaddrs((char *)(ifam + 1), cp + ifam->ifam_msglen, &info);
159 syslog(LOG_ERR, "%s: (get addr)", sdl->sdl_data);
162 ifs.int_addr = *ifaaddr;
163 if (ifs.int_addr.sa_family != AF_IPX)
166 if (ifs.int_flags & IFF_POINTOPOINT) {
168 syslog(LOG_ERR, "%s: (get dstaddr)",
172 if (brdaddr->sa_family == AF_UNSPEC) {
173 lookforinterfaces = 1;
176 ifs.int_dstaddr = *brdaddr;
178 if (ifs.int_flags & IFF_BROADCAST) {
180 syslog(LOG_ERR, "%s: (get broadaddr)",
184 ifs.int_dstaddr = *brdaddr;
186 if (ifs.int_flags & IFF_LOOPBACK) {
187 ifs.int_dstaddr = ifs.int_addr;
190 * already known to us?
191 * what makes a POINTOPOINT if unique is its dst addr,
192 * NOT its source address
194 if ( ((ifs.int_flags & IFF_POINTOPOINT) &&
195 if_ifwithdstaddr(&ifs.int_dstaddr)) ||
196 ( ((ifs.int_flags & IFF_POINTOPOINT) == 0) &&
197 if_ifwithaddr(&ifs.int_addr)))
199 ifp = (struct interface *)
200 malloc(sdl->sdl_nlen + 1 + sizeof(ifs));
202 syslog(LOG_ERR, "IPXrouted: out of memory\n");
203 lookforinterfaces = 1;
208 * Count the # of directly connected networks
209 * and point to point links which aren't looped
210 * back to ourself. This is used below to
211 * decide if we should be a routing ``supplier''.
213 if ((ifs.int_flags & IFF_POINTOPOINT) == 0 ||
214 if_ifwithaddr(&ifs.int_dstaddr) == 0)
215 externalinterfaces++;
217 * If we have a point-to-point link, we want to act
218 * as a supplier even if it's our only interface,
219 * as that's the only way our peer on the other end
220 * can tell that the link is up.
222 if ((ifs.int_flags & IFF_POINTOPOINT) && supplier < 0)
224 ifp->int_name = (char *)(ifp + 1);
225 strcpy(ifp->int_name, sdl->sdl_data);
227 ifp->int_metric = ifam->ifam_metric;
228 ifp->int_next = ifnet;
233 if (externalinterfaces > 1 && supplier < 0)
240 struct interface *ifp;
242 struct sockaddr_ipx net;
243 struct sockaddr *dst;
246 if (ifp->int_flags & IFF_POINTOPOINT) {
248 register struct interface *ifp2 = ifnet;
250 dst = &ifp->int_dstaddr;
252 /* Search for interfaces with the same net */
253 ifp->int_sq.n = ifp->int_sq.p = &(ifp->int_sq);
254 match = afswitch[dst->sa_family].af_netmatch;
256 for (ifp2 = ifnet; ifp2; ifp2 =ifp2->int_next) {
257 if (ifp->int_flags & IFF_POINTOPOINT == 0)
259 if ((*match)(&ifp2->int_dstaddr,&ifp->int_dstaddr)) {
260 insque(&ifp2->int_sq,&ifp->int_sq);
265 bzero(&net, sizeof(net));
266 net.sipx_family = AF_IPX;
267 net.sipx_len = sizeof (net);
268 net.sipx_addr.x_net = satoipx_addr(ifp->int_broadaddr).x_net;
269 dst = (struct sockaddr *)&net;
275 fprintf(stderr, "Adding route to interface %s\n", ifp->int_name);
276 if (ifp->int_transitions++ > 0)
277 syslog(LOG_ERR, "re-installing interface %s", ifp->int_name);
278 rtadd(dst, &ifp->int_addr, ifp->int_metric, 0,
279 ifp->int_flags & (IFF_INTERFACE|IFF_PASSIVE|IFF_REMOTE));