in6_ifattach.c revision 1.7 1 1.7 itojun /* $NetBSD: in6_ifattach.c,v 1.7 1999/09/13 12:15:55 itojun Exp $ */
2 1.3 thorpej
3 1.2 itojun /*
4 1.2 itojun * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 1.2 itojun * All rights reserved.
6 1.2 itojun *
7 1.2 itojun * Redistribution and use in source and binary forms, with or without
8 1.2 itojun * modification, are permitted provided that the following conditions
9 1.2 itojun * are met:
10 1.2 itojun * 1. Redistributions of source code must retain the above copyright
11 1.2 itojun * notice, this list of conditions and the following disclaimer.
12 1.2 itojun * 2. Redistributions in binary form must reproduce the above copyright
13 1.2 itojun * notice, this list of conditions and the following disclaimer in the
14 1.2 itojun * documentation and/or other materials provided with the distribution.
15 1.2 itojun * 3. Neither the name of the project nor the names of its contributors
16 1.2 itojun * may be used to endorse or promote products derived from this software
17 1.2 itojun * without specific prior written permission.
18 1.2 itojun *
19 1.2 itojun * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 1.2 itojun * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 1.2 itojun * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 1.2 itojun * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 1.2 itojun * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 1.2 itojun * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 1.2 itojun * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 1.2 itojun * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 1.2 itojun * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 1.2 itojun * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 1.2 itojun * SUCH DAMAGE.
30 1.2 itojun */
31 1.2 itojun
32 1.2 itojun #include <sys/param.h>
33 1.2 itojun #include <sys/systm.h>
34 1.2 itojun #include <sys/malloc.h>
35 1.2 itojun #include <sys/socket.h>
36 1.2 itojun #include <sys/sockio.h>
37 1.2 itojun
38 1.2 itojun #include <net/if.h>
39 1.2 itojun #include <net/if_dl.h>
40 1.2 itojun #include <net/if_types.h>
41 1.2 itojun #include <net/route.h>
42 1.2 itojun
43 1.2 itojun #include <netinet/in.h>
44 1.2 itojun #include <netinet/in_var.h>
45 1.2 itojun #ifndef __NetBSD__
46 1.2 itojun #include <netinet/if_ether.h>
47 1.2 itojun #endif
48 1.2 itojun
49 1.2 itojun #include <netinet6/in6.h>
50 1.2 itojun #include <netinet6/ip6.h>
51 1.2 itojun #include <netinet6/ip6_var.h>
52 1.2 itojun #include <netinet6/in6_ifattach.h>
53 1.2 itojun #include <netinet6/ip6.h>
54 1.2 itojun #include <netinet6/ip6_var.h>
55 1.2 itojun #include <netinet6/nd6.h>
56 1.2 itojun
57 1.2 itojun static struct in6_addr llsol;
58 1.2 itojun
59 1.2 itojun struct in6_addr **in6_iflladdr = NULL;
60 1.2 itojun unsigned long in6_maxmtu = 0;
61 1.2 itojun
62 1.2 itojun int found_first_ifid = 0;
63 1.2 itojun #define IFID_LEN 8
64 1.2 itojun static char first_ifid[IFID_LEN];
65 1.2 itojun
66 1.7 itojun static int laddr_to_eui64 __P((u_int8_t *, u_int8_t *, size_t));
67 1.2 itojun
68 1.7 itojun static int
69 1.7 itojun laddr_to_eui64(dst, src, len)
70 1.2 itojun u_int8_t *dst;
71 1.2 itojun u_int8_t *src;
72 1.7 itojun size_t len;
73 1.2 itojun {
74 1.7 itojun switch (len) {
75 1.7 itojun case 6:
76 1.7 itojun dst[0] = src[0];
77 1.7 itojun dst[1] = src[1];
78 1.7 itojun dst[2] = src[2];
79 1.7 itojun dst[3] = 0xff;
80 1.7 itojun dst[4] = 0xfe;
81 1.7 itojun dst[5] = src[3];
82 1.7 itojun dst[6] = src[4];
83 1.7 itojun dst[7] = src[5];
84 1.7 itojun break;
85 1.7 itojun case 8:
86 1.7 itojun bcopy(src, dst, len);
87 1.7 itojun break;
88 1.7 itojun default:
89 1.7 itojun return EINVAL;
90 1.7 itojun }
91 1.7 itojun
92 1.7 itojun return 0;
93 1.2 itojun }
94 1.2 itojun
95 1.2 itojun /*
96 1.5 itojun * Find first ifid on list of interfaces.
97 1.5 itojun * This is assumed that ifp0's interface token (for example, IEEE802 MAC)
98 1.5 itojun * is globally unique. We may need to have a flag parameter in the future.
99 1.2 itojun */
100 1.2 itojun int
101 1.2 itojun in6_ifattach_getifid(ifp0)
102 1.2 itojun struct ifnet *ifp0;
103 1.2 itojun {
104 1.2 itojun struct ifnet *ifp;
105 1.2 itojun struct ifaddr *ifa;
106 1.2 itojun u_int8_t *addr = NULL;
107 1.2 itojun int addrlen = 0;
108 1.2 itojun struct sockaddr_dl *sdl;
109 1.2 itojun
110 1.2 itojun if (found_first_ifid)
111 1.2 itojun return 0;
112 1.2 itojun
113 1.2 itojun for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_list.tqe_next) {
114 1.2 itojun if (ifp0 != NULL && ifp0 != ifp)
115 1.2 itojun continue;
116 1.2 itojun for (ifa = ifp->if_addrlist.tqh_first;
117 1.2 itojun ifa;
118 1.2 itojun ifa = ifa->ifa_list.tqe_next) {
119 1.2 itojun if (ifa->ifa_addr->sa_family != AF_LINK)
120 1.2 itojun continue;
121 1.2 itojun sdl = (struct sockaddr_dl *)ifa->ifa_addr;
122 1.2 itojun if (sdl == NULL)
123 1.2 itojun continue;
124 1.2 itojun if (sdl->sdl_alen == 0)
125 1.2 itojun continue;
126 1.2 itojun switch (ifp->if_type) {
127 1.2 itojun case IFT_ETHER:
128 1.2 itojun case IFT_FDDI:
129 1.2 itojun case IFT_ATM:
130 1.7 itojun /* IEEE802/EUI64 cases - what others? */
131 1.2 itojun addr = LLADDR(sdl);
132 1.2 itojun addrlen = sdl->sdl_alen;
133 1.7 itojun /*
134 1.7 itojun * to copy ifid from IEEE802/EUI64 interface,
135 1.7 itojun * u bit of the source needs to be 0.
136 1.7 itojun */
137 1.7 itojun if ((addr[0] & 0x02) != 0)
138 1.7 itojun break;
139 1.2 itojun goto found;
140 1.2 itojun default:
141 1.2 itojun break;
142 1.2 itojun }
143 1.2 itojun }
144 1.2 itojun }
145 1.4 thorpej #ifdef DEBUG
146 1.4 thorpej printf("in6_ifattach_getifid: failed to get EUI64");
147 1.4 thorpej #endif
148 1.2 itojun return EADDRNOTAVAIL;
149 1.2 itojun
150 1.2 itojun found:
151 1.7 itojun if (laddr_to_eui64(first_ifid, addr, addrlen) == 0)
152 1.2 itojun found_first_ifid = 1;
153 1.2 itojun
154 1.2 itojun if (found_first_ifid) {
155 1.4 thorpej printf("%s: supplying EUI64: "
156 1.4 thorpej "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
157 1.2 itojun ifp->if_xname,
158 1.2 itojun first_ifid[0] & 0xff, first_ifid[1] & 0xff,
159 1.2 itojun first_ifid[2] & 0xff, first_ifid[3] & 0xff,
160 1.2 itojun first_ifid[4] & 0xff, first_ifid[5] & 0xff,
161 1.2 itojun first_ifid[6] & 0xff, first_ifid[7] & 0xff);
162 1.5 itojun
163 1.5 itojun /* invert u bit to convert EUI64 to RFC2373 interface ID. */
164 1.5 itojun first_ifid[0] ^= 0x02;
165 1.5 itojun
166 1.2 itojun return 0;
167 1.2 itojun } else {
168 1.4 thorpej #ifdef DEBUG
169 1.4 thorpej printf("in6_ifattach_getifid: failed to get EUI64");
170 1.4 thorpej #endif
171 1.2 itojun return EADDRNOTAVAIL;
172 1.2 itojun }
173 1.2 itojun }
174 1.2 itojun
175 1.2 itojun /*
176 1.2 itojun * add link-local address to *pseudo* p2p interfaces.
177 1.2 itojun * get called when the first MAC address is made available in in6_ifattach().
178 1.5 itojun *
179 1.5 itojun * XXX I start feeling this as a bad idea. (itojun)
180 1.2 itojun */
181 1.2 itojun void
182 1.2 itojun in6_ifattach_p2p()
183 1.2 itojun {
184 1.2 itojun struct ifnet *ifp;
185 1.2 itojun
186 1.2 itojun /* prevent infinite loop. just in case. */
187 1.4 thorpej if (found_first_ifid == 0)
188 1.2 itojun return;
189 1.2 itojun
190 1.2 itojun for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_list.tqe_next) {
191 1.2 itojun switch (ifp->if_type) {
192 1.2 itojun case IFT_GIF:
193 1.2 itojun /* pseudo interfaces - safe to initialize here */
194 1.2 itojun in6_ifattach(ifp, IN6_IFT_P2P, 0, 0);
195 1.2 itojun break;
196 1.5 itojun case IFT_FAITH:
197 1.5 itojun /* this mistakingly becomes IFF_UP */
198 1.5 itojun break;
199 1.2 itojun case IFT_SLIP:
200 1.2 itojun /* IPv6 is not supported */
201 1.2 itojun break;
202 1.2 itojun case IFT_PPP:
203 1.2 itojun /* this is not a pseudo interface, skip it */
204 1.2 itojun break;
205 1.2 itojun default:
206 1.2 itojun break;
207 1.2 itojun }
208 1.2 itojun }
209 1.2 itojun }
210 1.2 itojun
211 1.2 itojun void
212 1.2 itojun in6_ifattach(ifp, type, laddr, noloop)
213 1.2 itojun struct ifnet *ifp;
214 1.2 itojun u_int type;
215 1.2 itojun caddr_t laddr;
216 1.7 itojun /* size_t laddrlen; */
217 1.2 itojun int noloop;
218 1.2 itojun {
219 1.2 itojun static size_t if_indexlim = 8;
220 1.2 itojun struct sockaddr_in6 mltaddr;
221 1.2 itojun struct sockaddr_in6 mltmask;
222 1.2 itojun struct sockaddr_in6 gate;
223 1.2 itojun struct sockaddr_in6 mask;
224 1.2 itojun
225 1.2 itojun struct in6_ifaddr *ia, *ib, *oia;
226 1.2 itojun struct ifaddr *ifa;
227 1.2 itojun int rtflag = 0;
228 1.2 itojun
229 1.2 itojun if (type == IN6_IFT_P2P && found_first_ifid == 0) {
230 1.4 thorpej printf("%s: no ifid available for IPv6 link-local address\n",
231 1.2 itojun ifp->if_xname);
232 1.2 itojun return;
233 1.2 itojun }
234 1.2 itojun
235 1.2 itojun if ((ifp->if_flags & IFF_MULTICAST) == 0) {
236 1.4 thorpej printf("%s: not multicast capable, IPv6 not enabled\n",
237 1.2 itojun ifp->if_xname);
238 1.2 itojun return;
239 1.2 itojun }
240 1.2 itojun
241 1.2 itojun /*
242 1.2 itojun * We have some arrays that should be indexed by if_index.
243 1.2 itojun * since if_index will grow dynamically, they should grow too.
244 1.2 itojun * struct in6_addr **in6_iflladdr
245 1.2 itojun */
246 1.2 itojun if (in6_iflladdr == NULL || if_index >= if_indexlim) {
247 1.2 itojun size_t n;
248 1.2 itojun caddr_t q;
249 1.7 itojun size_t olim;
250 1.2 itojun
251 1.7 itojun olim = if_indexlim;
252 1.7 itojun while (if_index >= if_indexlim)
253 1.2 itojun if_indexlim <<= 1;
254 1.2 itojun
255 1.2 itojun /* grow in6_iflladdr */
256 1.2 itojun n = if_indexlim * sizeof(struct in6_addr *);
257 1.2 itojun q = (caddr_t)malloc(n, M_IFADDR, M_WAITOK);
258 1.2 itojun bzero(q, n);
259 1.2 itojun if (in6_iflladdr) {
260 1.7 itojun bcopy((caddr_t)in6_iflladdr, q,
261 1.7 itojun olim * sizeof(struct in6_addr *));
262 1.2 itojun free((caddr_t)in6_iflladdr, M_IFADDR);
263 1.2 itojun }
264 1.2 itojun in6_iflladdr = (struct in6_addr **)q;
265 1.2 itojun }
266 1.2 itojun
267 1.2 itojun /*
268 1.2 itojun * To prevent to assign link-local address to PnP network
269 1.2 itojun * cards multiple times.
270 1.2 itojun * This is lengthy for P2P and LOOP but works.
271 1.2 itojun */
272 1.2 itojun ifa = TAILQ_FIRST(&ifp->if_addrlist);
273 1.2 itojun if (ifa != NULL) {
274 1.2 itojun for ( ; ifa; ifa = TAILQ_NEXT(ifa, ifa_list)) {
275 1.2 itojun if (ifa->ifa_addr->sa_family != AF_INET6)
276 1.2 itojun continue;
277 1.2 itojun if (IN6_IS_ADDR_LINKLOCAL(&satosin6(ifa->ifa_addr)->sin6_addr))
278 1.2 itojun return;
279 1.2 itojun }
280 1.7 itojun } else {
281 1.2 itojun TAILQ_INIT(&ifp->if_addrlist);
282 1.7 itojun }
283 1.2 itojun
284 1.2 itojun /*
285 1.2 itojun * link-local address
286 1.2 itojun */
287 1.2 itojun ia = (struct in6_ifaddr *)malloc(sizeof(*ia), M_IFADDR, M_WAITOK);
288 1.2 itojun bzero((caddr_t)ia, sizeof(*ia));
289 1.2 itojun ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
290 1.2 itojun ia->ia_ifa.ifa_dstaddr = (struct sockaddr *)&ia->ia_dstaddr;
291 1.2 itojun ia->ia_ifa.ifa_netmask = (struct sockaddr *)&ia->ia_prefixmask;
292 1.2 itojun ia->ia_ifp = ifp;
293 1.2 itojun TAILQ_INSERT_TAIL(&ifp->if_addrlist, (struct ifaddr *)ia, ifa_list);
294 1.2 itojun /*
295 1.2 itojun * Also link into the IPv6 address chain beginning with in6_ifaddr.
296 1.2 itojun * kazu opposed it, but itojun & jinmei wanted.
297 1.2 itojun */
298 1.2 itojun if ((oia = in6_ifaddr) != NULL) {
299 1.2 itojun for (; oia->ia_next; oia = oia->ia_next)
300 1.2 itojun continue;
301 1.2 itojun oia->ia_next = ia;
302 1.2 itojun } else
303 1.2 itojun in6_ifaddr = ia;
304 1.2 itojun
305 1.2 itojun ia->ia_prefixmask.sin6_len = sizeof(struct sockaddr_in6);
306 1.2 itojun ia->ia_prefixmask.sin6_family = AF_INET6;
307 1.2 itojun ia->ia_prefixmask.sin6_addr = in6mask64;
308 1.2 itojun
309 1.2 itojun bzero(&ia->ia_addr, sizeof(struct sockaddr_in6));
310 1.2 itojun ia->ia_addr.sin6_len = sizeof(struct sockaddr_in6);
311 1.2 itojun ia->ia_addr.sin6_family = AF_INET6;
312 1.2 itojun ia->ia_addr.sin6_addr.s6_addr16[0] = htons(0xfe80);
313 1.2 itojun ia->ia_addr.sin6_addr.s6_addr16[1] = htons(ifp->if_index);
314 1.2 itojun ia->ia_addr.sin6_addr.s6_addr32[1] = 0;
315 1.2 itojun
316 1.2 itojun switch (type) {
317 1.2 itojun case IN6_IFT_LOOP:
318 1.2 itojun ia->ia_addr.sin6_addr.s6_addr32[2] = 0;
319 1.2 itojun ia->ia_addr.sin6_addr.s6_addr32[3] = htonl(1);
320 1.2 itojun break;
321 1.2 itojun case IN6_IFT_802:
322 1.2 itojun ia->ia_ifa.ifa_rtrequest = nd6_rtrequest;
323 1.2 itojun ia->ia_ifa.ifa_flags |= RTF_CLONING;
324 1.2 itojun rtflag = RTF_CLONING;
325 1.2 itojun /* fall through */
326 1.2 itojun case IN6_IFT_P2P802:
327 1.2 itojun if (laddr == NULL)
328 1.2 itojun break;
329 1.7 itojun /* XXX use laddrlen */
330 1.7 itojun if (laddr_to_eui64(&ia->ia_addr.sin6_addr.s6_addr8[8],
331 1.7 itojun laddr, 6) != 0) {
332 1.7 itojun break;
333 1.7 itojun }
334 1.6 itojun /* invert u bit to convert EUI64 to RFC2373 interface ID. */
335 1.6 itojun ia->ia_addr.sin6_addr.s6_addr8[8] ^= 0x02;
336 1.4 thorpej if (found_first_ifid == 0) {
337 1.2 itojun if (in6_ifattach_getifid(ifp) == 0)
338 1.2 itojun in6_ifattach_p2p();
339 1.2 itojun }
340 1.2 itojun break;
341 1.2 itojun case IN6_IFT_P2P:
342 1.2 itojun bcopy((caddr_t)first_ifid,
343 1.2 itojun (caddr_t)&ia->ia_addr.sin6_addr.s6_addr8[8],
344 1.2 itojun IFID_LEN);
345 1.2 itojun break;
346 1.2 itojun }
347 1.2 itojun
348 1.2 itojun ia->ia_ifa.ifa_metric = ifp->if_metric;
349 1.2 itojun
350 1.2 itojun if (ifp->if_ioctl != NULL) {
351 1.2 itojun int s;
352 1.2 itojun int error;
353 1.2 itojun
354 1.2 itojun /*
355 1.2 itojun * give the interface a chance to initialize, in case this
356 1.2 itojun * is the first address to be added.
357 1.2 itojun */
358 1.2 itojun s = splimp();
359 1.2 itojun error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (caddr_t)ia);
360 1.2 itojun splx(s);
361 1.2 itojun
362 1.2 itojun if (error) {
363 1.2 itojun switch (error) {
364 1.2 itojun case EAFNOSUPPORT:
365 1.4 thorpej printf("%s: IPv6 not supported\n",
366 1.2 itojun ifp->if_xname);
367 1.2 itojun break;
368 1.2 itojun default:
369 1.4 thorpej printf("%s: SIOCSIFADDR error %d\n",
370 1.2 itojun ifp->if_xname, error);
371 1.2 itojun break;
372 1.2 itojun }
373 1.2 itojun
374 1.2 itojun /* undo changes */
375 1.2 itojun TAILQ_REMOVE(&ifp->if_addrlist, (struct ifaddr *)ia, ifa_list);
376 1.2 itojun if (oia)
377 1.2 itojun oia->ia_next = ia->ia_next;
378 1.2 itojun else
379 1.2 itojun in6_ifaddr = ia->ia_next;
380 1.2 itojun free(ia, M_IFADDR);
381 1.2 itojun return;
382 1.2 itojun }
383 1.2 itojun }
384 1.2 itojun
385 1.2 itojun /* add route to the interface. */
386 1.2 itojun rtrequest(RTM_ADD,
387 1.2 itojun (struct sockaddr *)&ia->ia_addr,
388 1.2 itojun (struct sockaddr *)&ia->ia_addr,
389 1.2 itojun (struct sockaddr *)&ia->ia_prefixmask,
390 1.2 itojun RTF_UP|rtflag,
391 1.2 itojun (struct rtentry **)0);
392 1.2 itojun ia->ia_flags |= IFA_ROUTE;
393 1.2 itojun
394 1.2 itojun if (type == IN6_IFT_P2P || type == IN6_IFT_P2P802) {
395 1.2 itojun /*
396 1.2 itojun * route local address to loopback
397 1.2 itojun */
398 1.2 itojun bzero(&gate, sizeof(gate));
399 1.2 itojun gate.sin6_len = sizeof(struct sockaddr_in6);
400 1.2 itojun gate.sin6_family = AF_INET6;
401 1.2 itojun gate.sin6_addr = in6addr_loopback;
402 1.2 itojun bzero(&mask, sizeof(mask));
403 1.2 itojun mask.sin6_len = sizeof(struct sockaddr_in6);
404 1.2 itojun mask.sin6_family = AF_INET6;
405 1.2 itojun mask.sin6_addr = in6mask64;
406 1.2 itojun rtrequest(RTM_ADD,
407 1.2 itojun (struct sockaddr *)&ia->ia_addr,
408 1.2 itojun (struct sockaddr *)&gate,
409 1.2 itojun (struct sockaddr *)&mask,
410 1.2 itojun RTF_UP|RTF_HOST,
411 1.2 itojun (struct rtentry **)0);
412 1.2 itojun }
413 1.2 itojun
414 1.2 itojun /*
415 1.2 itojun * loopback address
416 1.2 itojun */
417 1.2 itojun ib = (struct in6_ifaddr *)NULL;
418 1.2 itojun if (type == IN6_IFT_LOOP) {
419 1.2 itojun ib = (struct in6_ifaddr *)
420 1.2 itojun malloc(sizeof(*ib), M_IFADDR, M_WAITOK);
421 1.2 itojun bzero((caddr_t)ib, sizeof(*ib));
422 1.2 itojun ib->ia_ifa.ifa_addr = (struct sockaddr *)&ib->ia_addr;
423 1.2 itojun ib->ia_ifa.ifa_dstaddr = (struct sockaddr *)&ib->ia_dstaddr;
424 1.2 itojun ib->ia_ifa.ifa_netmask = (struct sockaddr *)&ib->ia_prefixmask;
425 1.2 itojun ib->ia_ifp = ifp;
426 1.2 itojun
427 1.2 itojun ia->ia_next = ib;
428 1.2 itojun TAILQ_INSERT_TAIL(&ifp->if_addrlist, (struct ifaddr *)ib,
429 1.2 itojun ifa_list);
430 1.2 itojun
431 1.2 itojun ib->ia_prefixmask.sin6_len = sizeof(struct sockaddr_in6);
432 1.2 itojun ib->ia_prefixmask.sin6_family = AF_INET6;
433 1.2 itojun ib->ia_prefixmask.sin6_addr = in6mask128;
434 1.2 itojun ib->ia_addr.sin6_len = sizeof(struct sockaddr_in6);
435 1.2 itojun ib->ia_addr.sin6_family = AF_INET6;
436 1.2 itojun ib->ia_addr.sin6_addr = in6addr_loopback;
437 1.2 itojun #ifdef __bsdi__
438 1.2 itojun /*
439 1.2 itojun * It is necessary to set the loopback address to the dstaddr
440 1.2 itojun * field at least for BSDI. Without this setting, the BSDI
441 1.2 itojun * version of ifa_ifwithroute() rejects to add a route
442 1.2 itojun * to the loopback interface.
443 1.2 itojun */
444 1.2 itojun ib->ia_dstaddr.sin6_len = sizeof(struct sockaddr_in6);
445 1.2 itojun ib->ia_dstaddr.sin6_family = AF_INET6;
446 1.2 itojun ib->ia_dstaddr.sin6_addr = in6addr_loopback;
447 1.2 itojun #endif /* __bsdi__ */
448 1.2 itojun
449 1.2 itojun ib->ia_ifa.ifa_metric = ifp->if_metric;
450 1.2 itojun
451 1.2 itojun rtrequest(RTM_ADD,
452 1.2 itojun (struct sockaddr *)&ib->ia_addr,
453 1.2 itojun (struct sockaddr *)&ib->ia_addr,
454 1.2 itojun (struct sockaddr *)&ib->ia_prefixmask,
455 1.2 itojun RTF_UP|RTF_HOST,
456 1.2 itojun (struct rtentry **)0);
457 1.2 itojun
458 1.2 itojun ib->ia_flags |= IFA_ROUTE;
459 1.2 itojun }
460 1.2 itojun
461 1.2 itojun /*
462 1.2 itojun * join multicast
463 1.2 itojun */
464 1.2 itojun if (ifp->if_flags & IFF_MULTICAST) {
465 1.2 itojun int error; /* not used */
466 1.2 itojun
467 1.7 itojun #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3)
468 1.2 itojun /* Restore saved multicast addresses(if any). */
469 1.2 itojun in6_restoremkludge(ia, ifp);
470 1.2 itojun #endif
471 1.2 itojun
472 1.2 itojun bzero(&mltmask, sizeof(mltmask));
473 1.2 itojun mltmask.sin6_len = sizeof(struct sockaddr_in6);
474 1.2 itojun mltmask.sin6_family = AF_INET6;
475 1.2 itojun mltmask.sin6_addr = in6mask32;
476 1.2 itojun
477 1.2 itojun /*
478 1.2 itojun * join link-local all-nodes address
479 1.2 itojun */
480 1.2 itojun bzero(&mltaddr, sizeof(mltaddr));
481 1.2 itojun mltaddr.sin6_len = sizeof(struct sockaddr_in6);
482 1.2 itojun mltaddr.sin6_family = AF_INET6;
483 1.2 itojun mltaddr.sin6_addr = in6addr_linklocal_allnodes;
484 1.2 itojun mltaddr.sin6_addr.s6_addr16[1] = htons(ifp->if_index);
485 1.2 itojun rtrequest(RTM_ADD,
486 1.2 itojun (struct sockaddr *)&mltaddr,
487 1.2 itojun (struct sockaddr *)&ia->ia_addr,
488 1.2 itojun (struct sockaddr *)&mltmask,
489 1.2 itojun RTF_UP|RTF_CLONING, /* xxx */
490 1.2 itojun (struct rtentry **)0);
491 1.2 itojun (void)in6_addmulti(&mltaddr.sin6_addr, ifp, &error);
492 1.2 itojun
493 1.2 itojun if (type == IN6_IFT_LOOP) {
494 1.2 itojun /*
495 1.2 itojun * join node-local all-nodes address
496 1.2 itojun */
497 1.2 itojun mltaddr.sin6_addr = in6addr_nodelocal_allnodes;
498 1.2 itojun rtrequest(RTM_ADD,
499 1.2 itojun (struct sockaddr *)&mltaddr,
500 1.2 itojun (struct sockaddr *)&ib->ia_addr,
501 1.2 itojun (struct sockaddr *)&mltmask,
502 1.2 itojun RTF_UP,
503 1.2 itojun (struct rtentry **)0);
504 1.2 itojun (void)in6_addmulti(&mltaddr.sin6_addr, ifp, &error);
505 1.2 itojun } else {
506 1.2 itojun /*
507 1.2 itojun * join solicited multicast address
508 1.2 itojun */
509 1.2 itojun bzero(&llsol, sizeof(llsol));
510 1.2 itojun llsol.s6_addr16[0] = htons(0xff02);
511 1.2 itojun llsol.s6_addr16[1] = htons(ifp->if_index);
512 1.2 itojun llsol.s6_addr32[1] = 0;
513 1.2 itojun llsol.s6_addr32[2] = htonl(1);
514 1.2 itojun llsol.s6_addr32[3] = ia->ia_addr.sin6_addr.s6_addr32[3];
515 1.2 itojun llsol.s6_addr8[12] = 0xff;
516 1.2 itojun (void)in6_addmulti(&llsol, ifp, &error);
517 1.2 itojun }
518 1.2 itojun }
519 1.2 itojun
520 1.2 itojun /* update dynamically. */
521 1.2 itojun in6_iflladdr[ifp->if_index] = &ia->ia_addr.sin6_addr;
522 1.2 itojun if (in6_maxmtu < ifp->if_mtu)
523 1.2 itojun in6_maxmtu = ifp->if_mtu;
524 1.2 itojun
525 1.2 itojun /* initialize NDP variables */
526 1.2 itojun nd6_ifattach(ifp);
527 1.2 itojun
528 1.2 itojun /* mark the address TENTATIVE, if needed. */
529 1.2 itojun switch (ifp->if_type) {
530 1.2 itojun case IFT_ETHER:
531 1.2 itojun case IFT_FDDI:
532 1.2 itojun #if 0
533 1.2 itojun case IFT_ATM:
534 1.2 itojun case IFT_SLIP:
535 1.2 itojun case IFT_PPP:
536 1.2 itojun #endif
537 1.2 itojun ia->ia6_flags |= IN6_IFF_TENTATIVE;
538 1.2 itojun /* nd6_dad_start() will be called in in6_if_up */
539 1.2 itojun break;
540 1.2 itojun case IFT_GIF:
541 1.2 itojun case IFT_LOOP:
542 1.2 itojun case IFT_FAITH:
543 1.2 itojun default:
544 1.2 itojun break;
545 1.2 itojun }
546 1.2 itojun
547 1.2 itojun return;
548 1.2 itojun }
549 1.2 itojun
550 1.2 itojun void
551 1.2 itojun in6_ifdetach(ifp)
552 1.2 itojun struct ifnet *ifp;
553 1.2 itojun {
554 1.2 itojun struct in6_ifaddr *ia, *oia;
555 1.2 itojun struct ifaddr *ifa;
556 1.2 itojun struct rtentry *rt;
557 1.2 itojun short rtflags;
558 1.2 itojun
559 1.2 itojun for (ifa = ifp->if_addrlist.tqh_first; ifa; ifa = ifa->ifa_list.tqe_next) {
560 1.2 itojun if (ifa->ifa_addr->sa_family != AF_INET6
561 1.2 itojun || !IN6_IS_ADDR_LINKLOCAL(&satosin6(&ifa->ifa_addr)->sin6_addr)) {
562 1.2 itojun continue;
563 1.2 itojun }
564 1.2 itojun
565 1.2 itojun ia = (struct in6_ifaddr *)ifa;
566 1.2 itojun
567 1.2 itojun /* remove from the routing table */
568 1.2 itojun if ((ia->ia_flags & IFA_ROUTE)
569 1.2 itojun && (rt = rtalloc1((struct sockaddr *)&ia->ia_addr, 0))) {
570 1.2 itojun rtflags = rt->rt_flags;
571 1.2 itojun rtfree(rt);
572 1.2 itojun rtrequest(RTM_DELETE,
573 1.2 itojun (struct sockaddr *)&ia->ia_addr,
574 1.2 itojun (struct sockaddr *)&ia->ia_addr,
575 1.2 itojun (struct sockaddr *)&ia->ia_prefixmask,
576 1.2 itojun rtflags, (struct rtentry **)0);
577 1.2 itojun }
578 1.2 itojun
579 1.2 itojun /* remove from the linked list */
580 1.2 itojun TAILQ_REMOVE(&ifp->if_addrlist, (struct ifaddr *)ia, ifa_list);
581 1.2 itojun
582 1.2 itojun /* also remove from the IPv6 address chain(itojun&jinmei) */
583 1.2 itojun oia = ia;
584 1.2 itojun if (oia == (ia = in6_ifaddr))
585 1.2 itojun in6_ifaddr = ia->ia_next;
586 1.2 itojun else {
587 1.2 itojun while (ia->ia_next && (ia->ia_next != oia))
588 1.2 itojun ia = ia->ia_next;
589 1.2 itojun if (ia->ia_next)
590 1.2 itojun ia->ia_next = oia->ia_next;
591 1.4 thorpej #ifdef DEBUG
592 1.2 itojun else
593 1.4 thorpej printf("%s: didn't unlink in6ifaddr from "
594 1.4 thorpej "list\n", ifp->if_xname);
595 1.4 thorpej #endif
596 1.2 itojun }
597 1.2 itojun
598 1.2 itojun free(ia, M_IFADDR);
599 1.2 itojun }
600 1.2 itojun }
601