1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28*0Sstevel@tonic-gate /* All Rights Reserved */
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate * Portions of this source code were derived from Berkeley 4.3 BSD
32*0Sstevel@tonic-gate * under license from the Regents of the University of California.
33*0Sstevel@tonic-gate */
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
36*0Sstevel@tonic-gate
37*0Sstevel@tonic-gate #include "defs.h"
38*0Sstevel@tonic-gate
39*0Sstevel@tonic-gate #define IF_SEPARATOR ':'
40*0Sstevel@tonic-gate
41*0Sstevel@tonic-gate struct interface *ifnet;
42*0Sstevel@tonic-gate
43*0Sstevel@tonic-gate static int setup_listen_sock(int ifindex);
44*0Sstevel@tonic-gate static void addrouteforif(struct interface *ifp);
45*0Sstevel@tonic-gate static void resetup_listen_sock(struct interface *, int);
46*0Sstevel@tonic-gate
47*0Sstevel@tonic-gate /*
48*0Sstevel@tonic-gate * This is called at startup and after that, every CHECK_INTERVAL seconds or
49*0Sstevel@tonic-gate * when a SIGHUP is received.
50*0Sstevel@tonic-gate */
51*0Sstevel@tonic-gate void
initifs(void)52*0Sstevel@tonic-gate initifs(void)
53*0Sstevel@tonic-gate {
54*0Sstevel@tonic-gate static char *buf = NULL;
55*0Sstevel@tonic-gate static uint_t maxbufsize = 0;
56*0Sstevel@tonic-gate int bufsize;
57*0Sstevel@tonic-gate int numifs;
58*0Sstevel@tonic-gate struct lifnum lifn;
59*0Sstevel@tonic-gate struct lifconf lifc;
60*0Sstevel@tonic-gate struct lifreq lifr;
61*0Sstevel@tonic-gate struct lifreq *lifrp;
62*0Sstevel@tonic-gate int n;
63*0Sstevel@tonic-gate struct interface ifs;
64*0Sstevel@tonic-gate struct interface *ifp;
65*0Sstevel@tonic-gate int netmaskchange = 0;
66*0Sstevel@tonic-gate boolean_t changes = _B_FALSE;
67*0Sstevel@tonic-gate
68*0Sstevel@tonic-gate lifn.lifn_family = AF_INET6;
69*0Sstevel@tonic-gate lifn.lifn_flags = 0;
70*0Sstevel@tonic-gate if (ioctl(iocsoc, SIOCGLIFNUM, (char *)&lifn) < 0) {
71*0Sstevel@tonic-gate syslog(LOG_ERR, "initifs: ioctl (get interface numbers): %m");
72*0Sstevel@tonic-gate return;
73*0Sstevel@tonic-gate }
74*0Sstevel@tonic-gate numifs = lifn.lifn_count;
75*0Sstevel@tonic-gate bufsize = numifs * sizeof (struct lifreq);
76*0Sstevel@tonic-gate
77*0Sstevel@tonic-gate if (buf == NULL || bufsize > maxbufsize) {
78*0Sstevel@tonic-gate if (buf != NULL)
79*0Sstevel@tonic-gate free(buf);
80*0Sstevel@tonic-gate maxbufsize = bufsize;
81*0Sstevel@tonic-gate buf = (char *)malloc(maxbufsize);
82*0Sstevel@tonic-gate if (buf == NULL) {
83*0Sstevel@tonic-gate syslog(LOG_ERR, "initifs: out of memory");
84*0Sstevel@tonic-gate return;
85*0Sstevel@tonic-gate }
86*0Sstevel@tonic-gate }
87*0Sstevel@tonic-gate
88*0Sstevel@tonic-gate lifc.lifc_family = AF_INET6;
89*0Sstevel@tonic-gate lifc.lifc_flags = 0;
90*0Sstevel@tonic-gate lifc.lifc_len = bufsize;
91*0Sstevel@tonic-gate lifc.lifc_buf = buf;
92*0Sstevel@tonic-gate if (ioctl(iocsoc, SIOCGLIFCONF, (char *)&lifc) < 0) {
93*0Sstevel@tonic-gate syslog(LOG_ERR,
94*0Sstevel@tonic-gate "initifs: ioctl (get interface configuration): %m");
95*0Sstevel@tonic-gate return;
96*0Sstevel@tonic-gate }
97*0Sstevel@tonic-gate
98*0Sstevel@tonic-gate /*
99*0Sstevel@tonic-gate * Mark all of the currently known interfaces in order to determine
100*0Sstevel@tonic-gate * which of the these interfaces no longer exist.
101*0Sstevel@tonic-gate */
102*0Sstevel@tonic-gate for (ifp = ifnet; ifp != NULL; ifp = ifp->int_next)
103*0Sstevel@tonic-gate ifp->int_flags |= RIP6_IFF_MARKED;
104*0Sstevel@tonic-gate lifrp = lifc.lifc_req;
105*0Sstevel@tonic-gate for (n = lifc.lifc_len / sizeof (struct lifreq); n > 0; n--, lifrp++) {
106*0Sstevel@tonic-gate bzero((char *)&ifs, sizeof (ifs));
107*0Sstevel@tonic-gate (void) strncpy(lifr.lifr_name, lifrp->lifr_name,
108*0Sstevel@tonic-gate sizeof (lifr.lifr_name));
109*0Sstevel@tonic-gate if (ioctl(iocsoc, SIOCGLIFFLAGS, (char *)&lifr) < 0) {
110*0Sstevel@tonic-gate syslog(LOG_ERR,
111*0Sstevel@tonic-gate "initifs: ioctl (get interface flags): %m");
112*0Sstevel@tonic-gate continue;
113*0Sstevel@tonic-gate }
114*0Sstevel@tonic-gate if (!(lifr.lifr_flags & IFF_IPV6) ||
115*0Sstevel@tonic-gate !(lifr.lifr_flags & IFF_MULTICAST) ||
116*0Sstevel@tonic-gate (lifr.lifr_flags & IFF_LOOPBACK))
117*0Sstevel@tonic-gate continue;
118*0Sstevel@tonic-gate
119*0Sstevel@tonic-gate ifp = if_ifwithname(lifr.lifr_name);
120*0Sstevel@tonic-gate if (ifp != NULL)
121*0Sstevel@tonic-gate ifp->int_flags &= ~RIP6_IFF_MARKED;
122*0Sstevel@tonic-gate if (lifr.lifr_flags & IFF_POINTOPOINT)
123*0Sstevel@tonic-gate ifs.int_flags |= RIP6_IFF_POINTOPOINT;
124*0Sstevel@tonic-gate if (lifr.lifr_flags & IFF_NORTEXCH)
125*0Sstevel@tonic-gate ifs.int_flags |= RIP6_IFF_NORTEXCH;
126*0Sstevel@tonic-gate if (lifr.lifr_flags & IFF_PRIVATE)
127*0Sstevel@tonic-gate ifs.int_flags |= RIP6_IFF_PRIVATE;
128*0Sstevel@tonic-gate if (lifr.lifr_flags & IFF_UP) {
129*0Sstevel@tonic-gate ifs.int_flags |= RIP6_IFF_UP;
130*0Sstevel@tonic-gate } else {
131*0Sstevel@tonic-gate if (ifp != NULL) {
132*0Sstevel@tonic-gate if (ifp->int_flags & RIP6_IFF_UP) {
133*0Sstevel@tonic-gate /*
134*0Sstevel@tonic-gate * If there is an transition from up to
135*0Sstevel@tonic-gate * down for an exisiting interface,
136*0Sstevel@tonic-gate * increment the counter.
137*0Sstevel@tonic-gate */
138*0Sstevel@tonic-gate ifp->int_transitions++;
139*0Sstevel@tonic-gate changes = _B_TRUE;
140*0Sstevel@tonic-gate }
141*0Sstevel@tonic-gate if_purge(ifp);
142*0Sstevel@tonic-gate }
143*0Sstevel@tonic-gate continue;
144*0Sstevel@tonic-gate }
145*0Sstevel@tonic-gate
146*0Sstevel@tonic-gate if (ifs.int_flags & RIP6_IFF_POINTOPOINT) {
147*0Sstevel@tonic-gate /*
148*0Sstevel@tonic-gate * For point-to-point interfaces, retrieve both the
149*0Sstevel@tonic-gate * local and the remote addresses.
150*0Sstevel@tonic-gate */
151*0Sstevel@tonic-gate if (ioctl(iocsoc, SIOCGLIFADDR, (char *)&lifr) < 0) {
152*0Sstevel@tonic-gate syslog(LOG_ERR,
153*0Sstevel@tonic-gate "initifs: ioctl (get interface address): "
154*0Sstevel@tonic-gate "%m");
155*0Sstevel@tonic-gate continue;
156*0Sstevel@tonic-gate }
157*0Sstevel@tonic-gate ifs.int_addr =
158*0Sstevel@tonic-gate ((struct sockaddr_in6 *)&lifr.lifr_addr)->sin6_addr;
159*0Sstevel@tonic-gate if (ioctl(iocsoc, SIOCGLIFDSTADDR, (char *)&lifr) < 0) {
160*0Sstevel@tonic-gate syslog(LOG_ERR,
161*0Sstevel@tonic-gate "initifs: ioctl (get destination address): "
162*0Sstevel@tonic-gate "%m");
163*0Sstevel@tonic-gate continue;
164*0Sstevel@tonic-gate }
165*0Sstevel@tonic-gate ifs.int_dstaddr = ((struct sockaddr_in6 *)
166*0Sstevel@tonic-gate &lifr.lifr_dstaddr)->sin6_addr;
167*0Sstevel@tonic-gate ifs.int_prefix_length = IPV6_ABITS;
168*0Sstevel@tonic-gate } else {
169*0Sstevel@tonic-gate /*
170*0Sstevel@tonic-gate * For other interfaces, retreieve the prefix (including
171*0Sstevel@tonic-gate * the prefix length.
172*0Sstevel@tonic-gate */
173*0Sstevel@tonic-gate if (ioctl(iocsoc, SIOCGLIFSUBNET, (char *)&lifr) < 0) {
174*0Sstevel@tonic-gate syslog(LOG_ERR,
175*0Sstevel@tonic-gate "initifs: ioctl (get subnet prefix): %m");
176*0Sstevel@tonic-gate continue;
177*0Sstevel@tonic-gate }
178*0Sstevel@tonic-gate /*
179*0Sstevel@tonic-gate * This should never happen but check for it in any case
180*0Sstevel@tonic-gate * since the kernel stores it as an signed integer.
181*0Sstevel@tonic-gate */
182*0Sstevel@tonic-gate if (lifr.lifr_addrlen < 0 ||
183*0Sstevel@tonic-gate lifr.lifr_addrlen > IPV6_ABITS) {
184*0Sstevel@tonic-gate syslog(LOG_ERR,
185*0Sstevel@tonic-gate "initifs: ioctl (get subnet prefix) "
186*0Sstevel@tonic-gate "returned invalid prefix length of %d",
187*0Sstevel@tonic-gate lifr.lifr_addrlen);
188*0Sstevel@tonic-gate continue;
189*0Sstevel@tonic-gate }
190*0Sstevel@tonic-gate ifs.int_prefix_length = lifr.lifr_addrlen;
191*0Sstevel@tonic-gate ifs.int_addr = ((struct sockaddr_in6 *)
192*0Sstevel@tonic-gate &lifr.lifr_subnet)->sin6_addr;
193*0Sstevel@tonic-gate }
194*0Sstevel@tonic-gate
195*0Sstevel@tonic-gate if (ioctl(iocsoc, SIOCGLIFMETRIC, (char *)&lifr) < 0 ||
196*0Sstevel@tonic-gate lifr.lifr_metric < 0)
197*0Sstevel@tonic-gate ifs.int_metric = 1;
198*0Sstevel@tonic-gate else
199*0Sstevel@tonic-gate ifs.int_metric = lifr.lifr_metric + 1;
200*0Sstevel@tonic-gate
201*0Sstevel@tonic-gate if (ioctl(iocsoc, SIOCGLIFINDEX, (char *)&lifr) < 0) {
202*0Sstevel@tonic-gate syslog(LOG_ERR, "initifs: ioctl (get index): %m");
203*0Sstevel@tonic-gate continue;
204*0Sstevel@tonic-gate }
205*0Sstevel@tonic-gate ifs.int_ifindex = lifr.lifr_index;
206*0Sstevel@tonic-gate
207*0Sstevel@tonic-gate if (ioctl(iocsoc, SIOCGLIFMTU, (char *)&lifr) < 0) {
208*0Sstevel@tonic-gate syslog(LOG_ERR, "initifs: ioctl (get mtu): %m");
209*0Sstevel@tonic-gate continue;
210*0Sstevel@tonic-gate }
211*0Sstevel@tonic-gate
212*0Sstevel@tonic-gate /*
213*0Sstevel@tonic-gate * If the interface's recorded MTU doesn't make sense, use
214*0Sstevel@tonic-gate * IPV6_MIN_MTU instead.
215*0Sstevel@tonic-gate */
216*0Sstevel@tonic-gate if (lifr.lifr_mtu < IPV6_MIN_MTU)
217*0Sstevel@tonic-gate ifs.int_mtu = IPV6_MIN_MTU;
218*0Sstevel@tonic-gate else
219*0Sstevel@tonic-gate ifs.int_mtu = lifr.lifr_mtu;
220*0Sstevel@tonic-gate
221*0Sstevel@tonic-gate if (ifp != NULL) {
222*0Sstevel@tonic-gate /*
223*0Sstevel@tonic-gate * RIP6_IFF_NORTEXCH flag change by itself shouldn't
224*0Sstevel@tonic-gate * cause an if_purge() call, which also purges all the
225*0Sstevel@tonic-gate * routes heard off this interface. So, let's suppress
226*0Sstevel@tonic-gate * changes of RIP6_IFF_NORTEXCH in the following
227*0Sstevel@tonic-gate * comparisons.
228*0Sstevel@tonic-gate */
229*0Sstevel@tonic-gate if (ifp->int_prefix_length == ifs.int_prefix_length &&
230*0Sstevel@tonic-gate ((ifp->int_flags | RIP6_IFF_NORTEXCH) ==
231*0Sstevel@tonic-gate (ifs.int_flags | RIP6_IFF_NORTEXCH)) &&
232*0Sstevel@tonic-gate ifp->int_metric == ifs.int_metric &&
233*0Sstevel@tonic-gate ifp->int_ifindex == ifs.int_ifindex) {
234*0Sstevel@tonic-gate /*
235*0Sstevel@tonic-gate * Now let's make sure we capture the latest
236*0Sstevel@tonic-gate * value of RIP6_IFF_NORTEXCH flag.
237*0Sstevel@tonic-gate */
238*0Sstevel@tonic-gate if (ifs.int_flags & RIP6_IFF_NORTEXCH)
239*0Sstevel@tonic-gate ifp->int_flags |= RIP6_IFF_NORTEXCH;
240*0Sstevel@tonic-gate else
241*0Sstevel@tonic-gate ifp->int_flags &= ~RIP6_IFF_NORTEXCH;
242*0Sstevel@tonic-gate
243*0Sstevel@tonic-gate if (!(ifp->int_flags & RIP6_IFF_POINTOPOINT) &&
244*0Sstevel@tonic-gate IN6_ARE_ADDR_EQUAL(&ifp->int_addr,
245*0Sstevel@tonic-gate &ifs.int_addr))
246*0Sstevel@tonic-gate continue;
247*0Sstevel@tonic-gate if ((ifp->int_flags & RIP6_IFF_POINTOPOINT) &&
248*0Sstevel@tonic-gate IN6_ARE_ADDR_EQUAL(&ifp->int_dstaddr,
249*0Sstevel@tonic-gate &ifs.int_dstaddr))
250*0Sstevel@tonic-gate continue;
251*0Sstevel@tonic-gate }
252*0Sstevel@tonic-gate if_purge(ifp);
253*0Sstevel@tonic-gate if (ifp->int_prefix_length != ifs.int_prefix_length)
254*0Sstevel@tonic-gate netmaskchange = 1;
255*0Sstevel@tonic-gate ifp->int_addr = ifs.int_addr;
256*0Sstevel@tonic-gate ifp->int_dstaddr = ifs.int_dstaddr;
257*0Sstevel@tonic-gate ifp->int_metric = ifs.int_metric;
258*0Sstevel@tonic-gate /*
259*0Sstevel@tonic-gate * If there is an transition from down to up for an
260*0Sstevel@tonic-gate * exisiting interface, increment the counter.
261*0Sstevel@tonic-gate */
262*0Sstevel@tonic-gate if (!(ifp->int_flags & RIP6_IFF_UP) &&
263*0Sstevel@tonic-gate (ifs.int_flags & RIP6_IFF_UP))
264*0Sstevel@tonic-gate ifp->int_transitions++;
265*0Sstevel@tonic-gate ifp->int_flags |= ifs.int_flags;
266*0Sstevel@tonic-gate ifp->int_prefix_length = ifs.int_prefix_length;
267*0Sstevel@tonic-gate
268*0Sstevel@tonic-gate /*
269*0Sstevel@tonic-gate * If the interface index has changed, we may need to
270*0Sstevel@tonic-gate * set up the listen socket again.
271*0Sstevel@tonic-gate */
272*0Sstevel@tonic-gate if (ifp->int_ifindex != ifs.int_ifindex) {
273*0Sstevel@tonic-gate if (ifp->int_sock != -1) {
274*0Sstevel@tonic-gate resetup_listen_sock(ifp,
275*0Sstevel@tonic-gate ifs.int_ifindex);
276*0Sstevel@tonic-gate }
277*0Sstevel@tonic-gate ifp->int_ifindex = ifs.int_ifindex;
278*0Sstevel@tonic-gate }
279*0Sstevel@tonic-gate
280*0Sstevel@tonic-gate ifp->int_mtu = ifs.int_mtu;
281*0Sstevel@tonic-gate } else {
282*0Sstevel@tonic-gate char *cp;
283*0Sstevel@tonic-gate int log_num;
284*0Sstevel@tonic-gate
285*0Sstevel@tonic-gate ifp = (struct interface *)
286*0Sstevel@tonic-gate malloc(sizeof (struct interface));
287*0Sstevel@tonic-gate if (ifp == NULL) {
288*0Sstevel@tonic-gate syslog(LOG_ERR, "initifs: out of memory");
289*0Sstevel@tonic-gate return;
290*0Sstevel@tonic-gate }
291*0Sstevel@tonic-gate *ifp = ifs;
292*0Sstevel@tonic-gate ifp->int_name = ifp->int_ifbase = NULL;
293*0Sstevel@tonic-gate ifp->int_name =
294*0Sstevel@tonic-gate (char *)malloc((size_t)strlen(lifr.lifr_name) + 1);
295*0Sstevel@tonic-gate if (ifp->int_name == NULL) {
296*0Sstevel@tonic-gate free(ifp);
297*0Sstevel@tonic-gate syslog(LOG_ERR, "initifs: out of memory");
298*0Sstevel@tonic-gate return;
299*0Sstevel@tonic-gate }
300*0Sstevel@tonic-gate (void) strcpy(ifp->int_name, lifr.lifr_name);
301*0Sstevel@tonic-gate ifp->int_ifbase =
302*0Sstevel@tonic-gate (char *)malloc((size_t)strlen(lifr.lifr_name) + 1);
303*0Sstevel@tonic-gate if (ifp->int_ifbase == NULL) {
304*0Sstevel@tonic-gate free(ifp->int_name);
305*0Sstevel@tonic-gate free(ifp);
306*0Sstevel@tonic-gate syslog(LOG_ERR, "initifs: out of memory");
307*0Sstevel@tonic-gate return;
308*0Sstevel@tonic-gate }
309*0Sstevel@tonic-gate (void) strcpy(ifp->int_ifbase, lifr.lifr_name);
310*0Sstevel@tonic-gate cp = (char *)index(ifp->int_ifbase, IF_SEPARATOR);
311*0Sstevel@tonic-gate if (cp != NULL) {
312*0Sstevel@tonic-gate /*
313*0Sstevel@tonic-gate * Verify that the value following the separator
314*0Sstevel@tonic-gate * is an integer greater than zero (the only
315*0Sstevel@tonic-gate * possible value for a logical interface).
316*0Sstevel@tonic-gate */
317*0Sstevel@tonic-gate log_num = atoi((char *)(cp + 1));
318*0Sstevel@tonic-gate if (log_num <= 0) {
319*0Sstevel@tonic-gate free(ifp->int_ifbase);
320*0Sstevel@tonic-gate free(ifp->int_name);
321*0Sstevel@tonic-gate free(ifp);
322*0Sstevel@tonic-gate syslog(LOG_ERR,
323*0Sstevel@tonic-gate "initifs: interface name %s could "
324*0Sstevel@tonic-gate "not be parsed", ifp->int_name);
325*0Sstevel@tonic-gate return;
326*0Sstevel@tonic-gate }
327*0Sstevel@tonic-gate *cp = '\0';
328*0Sstevel@tonic-gate } else {
329*0Sstevel@tonic-gate log_num = 0;
330*0Sstevel@tonic-gate }
331*0Sstevel@tonic-gate if (log_num == 0) {
332*0Sstevel@tonic-gate ifp->int_sock =
333*0Sstevel@tonic-gate setup_listen_sock(ifp->int_ifindex);
334*0Sstevel@tonic-gate } else {
335*0Sstevel@tonic-gate ifp->int_sock = -1;
336*0Sstevel@tonic-gate }
337*0Sstevel@tonic-gate ifp->int_next = ifnet;
338*0Sstevel@tonic-gate ifnet = ifp;
339*0Sstevel@tonic-gate traceinit(ifp);
340*0Sstevel@tonic-gate }
341*0Sstevel@tonic-gate addrouteforif(ifp);
342*0Sstevel@tonic-gate changes = _B_TRUE;
343*0Sstevel@tonic-gate }
344*0Sstevel@tonic-gate
345*0Sstevel@tonic-gate /*
346*0Sstevel@tonic-gate * Any remaining interfaces that are still marked and which were in an
347*0Sstevel@tonic-gate * up state (RIP6_IFF_UP) need to removed from the routing table.
348*0Sstevel@tonic-gate */
349*0Sstevel@tonic-gate for (ifp = ifnet; ifp != NULL; ifp = ifp->int_next) {
350*0Sstevel@tonic-gate if ((ifp->int_flags & (RIP6_IFF_MARKED | RIP6_IFF_UP)) ==
351*0Sstevel@tonic-gate (RIP6_IFF_MARKED | RIP6_IFF_UP)) {
352*0Sstevel@tonic-gate if_purge(ifp);
353*0Sstevel@tonic-gate ifp->int_flags &= ~RIP6_IFF_MARKED;
354*0Sstevel@tonic-gate changes = _B_TRUE;
355*0Sstevel@tonic-gate }
356*0Sstevel@tonic-gate }
357*0Sstevel@tonic-gate if (netmaskchange)
358*0Sstevel@tonic-gate rtchangeall();
359*0Sstevel@tonic-gate if (supplier & changes)
360*0Sstevel@tonic-gate dynamic_update((struct interface *)NULL);
361*0Sstevel@tonic-gate }
362*0Sstevel@tonic-gate
363*0Sstevel@tonic-gate static void
addrouteforif(struct interface * ifp)364*0Sstevel@tonic-gate addrouteforif(struct interface *ifp)
365*0Sstevel@tonic-gate {
366*0Sstevel@tonic-gate struct rt_entry *rt;
367*0Sstevel@tonic-gate struct in6_addr *dst;
368*0Sstevel@tonic-gate
369*0Sstevel@tonic-gate if (ifp->int_flags & RIP6_IFF_POINTOPOINT)
370*0Sstevel@tonic-gate dst = &ifp->int_dstaddr;
371*0Sstevel@tonic-gate else
372*0Sstevel@tonic-gate dst = &ifp->int_addr;
373*0Sstevel@tonic-gate
374*0Sstevel@tonic-gate rt = rtlookup(dst, ifp->int_prefix_length);
375*0Sstevel@tonic-gate
376*0Sstevel@tonic-gate if (rt != NULL) {
377*0Sstevel@tonic-gate if (rt->rt_state & RTS_INTERFACE)
378*0Sstevel@tonic-gate return;
379*0Sstevel@tonic-gate rtdelete(rt);
380*0Sstevel@tonic-gate }
381*0Sstevel@tonic-gate rtadd(dst, &ifp->int_addr, ifp->int_prefix_length, ifp->int_metric, 0,
382*0Sstevel@tonic-gate _B_TRUE, ifp);
383*0Sstevel@tonic-gate }
384*0Sstevel@tonic-gate
385*0Sstevel@tonic-gate static int
setup_listen_sock(int ifindex)386*0Sstevel@tonic-gate setup_listen_sock(int ifindex)
387*0Sstevel@tonic-gate {
388*0Sstevel@tonic-gate int sock;
389*0Sstevel@tonic-gate struct sockaddr_in6 sin6;
390*0Sstevel@tonic-gate uint_t hops;
391*0Sstevel@tonic-gate struct ipv6_mreq allrouters_mreq;
392*0Sstevel@tonic-gate int on = 1;
393*0Sstevel@tonic-gate int off = 0;
394*0Sstevel@tonic-gate int recvsize;
395*0Sstevel@tonic-gate
396*0Sstevel@tonic-gate sock = socket(AF_INET6, SOCK_DGRAM, 0);
397*0Sstevel@tonic-gate if (sock == -1)
398*0Sstevel@tonic-gate goto sock_fail;
399*0Sstevel@tonic-gate
400*0Sstevel@tonic-gate if (setsockopt(sock, IPPROTO_IPV6, IPV6_BOUND_IF, (char *)&ifindex,
401*0Sstevel@tonic-gate sizeof (ifindex)) < 0) {
402*0Sstevel@tonic-gate syslog(LOG_ERR,
403*0Sstevel@tonic-gate "setup_listen_sock: setsockopt: IPV6_BOUND_IF: %m");
404*0Sstevel@tonic-gate goto sock_fail;
405*0Sstevel@tonic-gate }
406*0Sstevel@tonic-gate
407*0Sstevel@tonic-gate hops = IPV6_MAX_HOPS;
408*0Sstevel@tonic-gate if (setsockopt(sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, (char *)&hops,
409*0Sstevel@tonic-gate sizeof (hops)) < 0) {
410*0Sstevel@tonic-gate syslog(LOG_ERR,
411*0Sstevel@tonic-gate "setup_listen_sock: setsockopt: IPV6_UNICAST_HOPS: %m");
412*0Sstevel@tonic-gate goto sock_fail;
413*0Sstevel@tonic-gate }
414*0Sstevel@tonic-gate
415*0Sstevel@tonic-gate if (setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char *)&hops,
416*0Sstevel@tonic-gate sizeof (hops)) < 0) {
417*0Sstevel@tonic-gate syslog(LOG_ERR,
418*0Sstevel@tonic-gate "setup_listen_sock: setsockopt: IPV6_MULTICAST_HOPS: %m");
419*0Sstevel@tonic-gate goto sock_fail;
420*0Sstevel@tonic-gate }
421*0Sstevel@tonic-gate
422*0Sstevel@tonic-gate if (setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (char *)&off,
423*0Sstevel@tonic-gate sizeof (off)) < 0) {
424*0Sstevel@tonic-gate syslog(LOG_ERR,
425*0Sstevel@tonic-gate "setup_listen_sock: setsockopt: IPV6_MULTICAST_LOOP: %m");
426*0Sstevel@tonic-gate goto sock_fail;
427*0Sstevel@tonic-gate }
428*0Sstevel@tonic-gate
429*0Sstevel@tonic-gate allrouters_mreq.ipv6mr_multiaddr = allrouters_in6;
430*0Sstevel@tonic-gate allrouters_mreq.ipv6mr_interface = ifindex;
431*0Sstevel@tonic-gate if (setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP,
432*0Sstevel@tonic-gate (char *)&allrouters_mreq, sizeof (allrouters_mreq)) < 0) {
433*0Sstevel@tonic-gate if (errno != EADDRINUSE) {
434*0Sstevel@tonic-gate syslog(LOG_ERR,
435*0Sstevel@tonic-gate "setup_listen_sock: setsockopt: "
436*0Sstevel@tonic-gate "IPV6_JOIN_GROUP: %m");
437*0Sstevel@tonic-gate goto sock_fail;
438*0Sstevel@tonic-gate }
439*0Sstevel@tonic-gate }
440*0Sstevel@tonic-gate
441*0Sstevel@tonic-gate if (setsockopt(sock, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, (char *)&on,
442*0Sstevel@tonic-gate sizeof (off)) < 0) {
443*0Sstevel@tonic-gate syslog(LOG_ERR,
444*0Sstevel@tonic-gate "setup_listen_sock: setsockopt: IPV6_RECVHOPLIMIT: %m");
445*0Sstevel@tonic-gate goto sock_fail;
446*0Sstevel@tonic-gate }
447*0Sstevel@tonic-gate
448*0Sstevel@tonic-gate if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&on,
449*0Sstevel@tonic-gate sizeof (on)) < 0) {
450*0Sstevel@tonic-gate syslog(LOG_ERR,
451*0Sstevel@tonic-gate "setup_listen_sock: setsockopt: SO_REUSEADDR: %m");
452*0Sstevel@tonic-gate goto sock_fail;
453*0Sstevel@tonic-gate }
454*0Sstevel@tonic-gate
455*0Sstevel@tonic-gate recvsize = RCVBUFSIZ;
456*0Sstevel@tonic-gate if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char *)&recvsize,
457*0Sstevel@tonic-gate sizeof (int)) < 0) {
458*0Sstevel@tonic-gate syslog(LOG_ERR, "setup_listen_sock: setsockopt: SO_RCVBUF: %m");
459*0Sstevel@tonic-gate goto sock_fail;
460*0Sstevel@tonic-gate }
461*0Sstevel@tonic-gate
462*0Sstevel@tonic-gate bzero((char *)&sin6, sizeof (sin6));
463*0Sstevel@tonic-gate sin6.sin6_family = AF_INET6;
464*0Sstevel@tonic-gate sin6.sin6_port = rip6_port;
465*0Sstevel@tonic-gate if (bind(sock, (struct sockaddr *)&sin6, sizeof (sin6)) < 0) {
466*0Sstevel@tonic-gate syslog(LOG_ERR, "setup_listen_sock: bind: %m");
467*0Sstevel@tonic-gate goto sock_fail;
468*0Sstevel@tonic-gate }
469*0Sstevel@tonic-gate
470*0Sstevel@tonic-gate poll_ifs_num++;
471*0Sstevel@tonic-gate if (poll_ifs == NULL) {
472*0Sstevel@tonic-gate poll_ifs = (struct pollfd *)
473*0Sstevel@tonic-gate malloc(max_poll_ifs * sizeof (struct pollfd));
474*0Sstevel@tonic-gate } else if (poll_ifs_num > max_poll_ifs) {
475*0Sstevel@tonic-gate max_poll_ifs *= 2;
476*0Sstevel@tonic-gate poll_ifs = (struct pollfd *)realloc((char *)poll_ifs,
477*0Sstevel@tonic-gate max_poll_ifs * sizeof (struct pollfd));
478*0Sstevel@tonic-gate }
479*0Sstevel@tonic-gate if (poll_ifs == NULL) {
480*0Sstevel@tonic-gate syslog(LOG_ERR, "setup_listen_sock: out of memory");
481*0Sstevel@tonic-gate goto sock_fail;
482*0Sstevel@tonic-gate }
483*0Sstevel@tonic-gate
484*0Sstevel@tonic-gate poll_ifs[poll_ifs_num - 1].fd = sock;
485*0Sstevel@tonic-gate poll_ifs[poll_ifs_num - 1].events = POLLIN;
486*0Sstevel@tonic-gate return (sock);
487*0Sstevel@tonic-gate
488*0Sstevel@tonic-gate sock_fail:
489*0Sstevel@tonic-gate if (sock > 0)
490*0Sstevel@tonic-gate (void) close(sock);
491*0Sstevel@tonic-gate return (-1);
492*0Sstevel@tonic-gate }
493*0Sstevel@tonic-gate
494*0Sstevel@tonic-gate /*
495*0Sstevel@tonic-gate * resetup_listen_sock is primarily used in the case where a tunnel was
496*0Sstevel@tonic-gate * plumbed, unplumbed, then plumbed again. This would cause the binding set by
497*0Sstevel@tonic-gate * IPV6_BOUND_IF to be useless, and sends to the associated socket will be
498*0Sstevel@tonic-gate * transmitted on the wrong interface. resetup_listen_sock
499*0Sstevel@tonic-gate * closes the socket,
500*0Sstevel@tonic-gate * removes the socket from poll_ifs[]
501*0Sstevel@tonic-gate * plugs the hole in poll_ifs[]
502*0Sstevel@tonic-gate * calls setup_listen_sock to set up the socket again
503*0Sstevel@tonic-gate */
504*0Sstevel@tonic-gate void
resetup_listen_sock(struct interface * ifp,int newindex)505*0Sstevel@tonic-gate resetup_listen_sock(struct interface *ifp, int newindex)
506*0Sstevel@tonic-gate {
507*0Sstevel@tonic-gate int i;
508*0Sstevel@tonic-gate
509*0Sstevel@tonic-gate (void) close(ifp->int_sock);
510*0Sstevel@tonic-gate
511*0Sstevel@tonic-gate /* Remove socket from poll_ifs[]. */
512*0Sstevel@tonic-gate for (i = poll_ifs_num - 1; i >= 0; i--) {
513*0Sstevel@tonic-gate
514*0Sstevel@tonic-gate if (poll_ifs[i].fd == ifp->int_sock) {
515*0Sstevel@tonic-gate
516*0Sstevel@tonic-gate poll_ifs[i].fd = 0;
517*0Sstevel@tonic-gate poll_ifs[i].events = 0;
518*0Sstevel@tonic-gate
519*0Sstevel@tonic-gate /*
520*0Sstevel@tonic-gate * Remove hole in poll_ifs. Possibly exchange
521*0Sstevel@tonic-gate * poll_ifs[i] with poll_ifs[poll_ifs_num-1].
522*0Sstevel@tonic-gate */
523*0Sstevel@tonic-gate if (i != poll_ifs_num - 1) {
524*0Sstevel@tonic-gate poll_ifs[i] = poll_ifs[poll_ifs_num - 1];
525*0Sstevel@tonic-gate poll_ifs[poll_ifs_num - 1].fd = 0;
526*0Sstevel@tonic-gate poll_ifs[poll_ifs_num - 1].events = 0;
527*0Sstevel@tonic-gate }
528*0Sstevel@tonic-gate poll_ifs_num--;
529*0Sstevel@tonic-gate
530*0Sstevel@tonic-gate /* Now set everything up again. */
531*0Sstevel@tonic-gate ifp->int_sock = setup_listen_sock(newindex);
532*0Sstevel@tonic-gate break;
533*0Sstevel@tonic-gate }
534*0Sstevel@tonic-gate }
535*0Sstevel@tonic-gate }
536