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 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $FreeBSD: src/usr.sbin/IPXrouted/startup.c,v 1.8.2.1 2000/07/01 10:46:25 ps Exp $
36 * @(#)startup.c 8.1 (Berkeley) 6/5/93
40 * Routing Table Management Daemon
44 #include <sys/param.h>
45 #include <sys/ioctl.h>
46 #include <sys/sysctl.h>
50 #include <net/if_dl.h>
57 struct interface *ifnet;
58 int lookforinterfaces = 1;
61 int externalinterfaces = 0; /* # of remote and local interfaces */
68 fprintf(stderr, "IPXroute: ");
70 fprintf(stderr, "%s: ", s);
71 fprintf(stderr, "%s\n", strerror(sverrno));
76 struct rt_addrinfo info;
77 /* Sleazy use of local variables throughout file, warning!!!! */
78 #define netmask info.rti_info[RTAX_NETMASK]
79 #define ifaaddr info.rti_info[RTAX_IFA]
80 #define brdaddr info.rti_info[RTAX_BRD]
83 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
84 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
87 rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo)
92 bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
93 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
94 if ((rtinfo->rti_addrs & (1 << i)) == 0)
96 rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
102 * Find the network interfaces which have configured themselves.
103 * If the interface is present but not yet up (for example an
104 * ARPANET IMP), set the lookforinterfaces flag so we'll
105 * come back later and look again.
110 struct interface ifs, *ifp;
112 int mib[6], no_ipxaddr = 0, flags = 0;
113 char *buf, *cplim, *cp;
114 struct if_msghdr *ifm;
115 struct ifa_msghdr *ifam;
116 struct sockaddr_dl *sdl = NULL;
122 mib[4] = NET_RT_IFLIST;
124 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
125 quit("route-sysctl-estimate");
126 if ((buf = malloc(needed)) == NULL)
128 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
129 lookforinterfaces = 0;
130 cplim = buf + needed;
131 for (cp = buf; cp < cplim; cp += ifm->ifm_msglen) {
132 ifm = (struct if_msghdr *)cp;
133 if (ifm->ifm_type == RTM_IFINFO) {
134 bzero(&ifs, sizeof(ifs));
135 ifs.int_flags = flags = ifm->ifm_flags | IFF_INTERFACE;
136 if ((flags & IFF_UP) == 0 || no_ipxaddr)
137 lookforinterfaces = 1;
138 sdl = (struct sockaddr_dl *) (ifm + 1);
139 sdl->sdl_data[sdl->sdl_nlen] = 0;
143 if (ifm->ifm_type != RTM_NEWADDR)
144 quit("ifinit: out of sync");
145 if ((flags & IFF_UP) == 0)
147 ifam = (struct ifa_msghdr *)ifm;
148 info.rti_addrs = ifam->ifam_addrs;
149 rt_xaddrs((char *)(ifam + 1), cp + ifam->ifam_msglen, &info);
151 syslog(LOG_ERR, "%s: (get addr)", sdl->sdl_data);
154 ifs.int_addr = *ifaaddr;
155 if (ifs.int_addr.sa_family != AF_IPX)
158 if (ifs.int_flags & IFF_POINTOPOINT) {
160 syslog(LOG_ERR, "%s: (get dstaddr)",
164 if (brdaddr->sa_family == AF_UNSPEC) {
165 lookforinterfaces = 1;
168 ifs.int_dstaddr = *brdaddr;
170 if (ifs.int_flags & IFF_BROADCAST) {
172 syslog(LOG_ERR, "%s: (get broadaddr)",
176 ifs.int_dstaddr = *brdaddr;
178 if (ifs.int_flags & IFF_LOOPBACK) {
179 ifs.int_dstaddr = ifs.int_addr;
182 * already known to us?
183 * what makes a POINTOPOINT if unique is its dst addr,
184 * NOT its source address
186 if ( ((ifs.int_flags & IFF_POINTOPOINT) &&
187 if_ifwithdstaddr(&ifs.int_dstaddr)) ||
188 ( ((ifs.int_flags & IFF_POINTOPOINT) == 0) &&
189 if_ifwithaddr(&ifs.int_addr)))
191 ifp = (struct interface *)
192 malloc(sdl->sdl_nlen + 1 + sizeof(ifs));
194 syslog(LOG_ERR, "IPXrouted: out of memory\n");
195 lookforinterfaces = 1;
200 * Count the # of directly connected networks
201 * and point to point links which aren't looped
202 * back to ourself. This is used below to
203 * decide if we should be a routing ``supplier''.
205 if ((ifs.int_flags & IFF_POINTOPOINT) == 0 ||
206 if_ifwithaddr(&ifs.int_dstaddr) == 0)
207 externalinterfaces++;
209 * If we have a point-to-point link, we want to act
210 * as a supplier even if it's our only interface,
211 * as that's the only way our peer on the other end
212 * can tell that the link is up.
214 if ((ifs.int_flags & IFF_POINTOPOINT) && supplier < 0)
216 ifp->int_name = (char *)(ifp + 1);
217 strcpy(ifp->int_name, sdl->sdl_data);
219 ifp->int_metric = ifam->ifam_metric;
220 ifp->int_next = ifnet;
225 if (externalinterfaces > 1 && supplier < 0)
231 addrouteforif(struct interface *ifp)
233 struct sockaddr_ipx net;
234 struct sockaddr *dst;
237 if (ifp->int_flags & IFF_POINTOPOINT) {
239 struct interface *ifp2 = ifnet;
241 dst = &ifp->int_dstaddr;
243 /* Search for interfaces with the same net */
244 ifp->int_sq.n = ifp->int_sq.p = &(ifp->int_sq);
245 match = afswitch[dst->sa_family].af_netmatch;
247 for (ifp2 = ifnet; ifp2; ifp2 =ifp2->int_next) {
248 if ((ifp->int_flags & IFF_POINTOPOINT) == 0)
250 if ((*match)(&ifp2->int_dstaddr,&ifp->int_dstaddr)) {
251 insque(&ifp2->int_sq,&ifp->int_sq);
256 bzero(&net, sizeof(net));
257 net.sipx_family = AF_IPX;
258 net.sipx_len = sizeof (net);
259 net.sipx_addr.x_net = satoipx_addr(ifp->int_broadaddr).x_net;
260 dst = (struct sockaddr *)&net;
266 fprintf(stderr, "Adding route to interface %s\n", ifp->int_name);
267 if (ifp->int_transitions++ > 0)
268 syslog(LOG_ERR, "re-installing interface %s", ifp->int_name);
269 rtadd(dst, &ifp->int_addr, ifp->int_metric, 0,
270 ifp->int_flags & (IFF_INTERFACE|IFF_PASSIVE|IFF_REMOTE));