in6_ifattach.c revision 1.2.2.3
1 1.2.2.3 thorpej /* $NetBSD: in6_ifattach.c,v 1.2.2.3 1999/08/02 22:36:04 thorpej Exp $ */ 2 1.2.2.3 thorpej 3 1.2.2.2 thorpej /* 4 1.2.2.2 thorpej * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 1.2.2.2 thorpej * All rights reserved. 6 1.2.2.2 thorpej * 7 1.2.2.2 thorpej * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 thorpej * modification, are permitted provided that the following conditions 9 1.2.2.2 thorpej * are met: 10 1.2.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 thorpej * documentation and/or other materials provided with the distribution. 15 1.2.2.2 thorpej * 3. Neither the name of the project nor the names of its contributors 16 1.2.2.2 thorpej * may be used to endorse or promote products derived from this software 17 1.2.2.2 thorpej * without specific prior written permission. 18 1.2.2.2 thorpej * 19 1.2.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 1.2.2.2 thorpej * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 1.2.2.2 thorpej * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 1.2.2.2 thorpej * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 1.2.2.2 thorpej * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 1.2.2.2 thorpej * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 1.2.2.2 thorpej * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 1.2.2.2 thorpej * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 1.2.2.2 thorpej * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 1.2.2.2 thorpej * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 1.2.2.2 thorpej * SUCH DAMAGE. 30 1.2.2.2 thorpej */ 31 1.2.2.2 thorpej 32 1.2.2.2 thorpej #include <sys/param.h> 33 1.2.2.2 thorpej #include <sys/systm.h> 34 1.2.2.2 thorpej #include <sys/malloc.h> 35 1.2.2.2 thorpej #include <sys/socket.h> 36 1.2.2.2 thorpej #include <sys/sockio.h> 37 1.2.2.2 thorpej 38 1.2.2.2 thorpej #include <net/if.h> 39 1.2.2.2 thorpej #include <net/if_dl.h> 40 1.2.2.2 thorpej #include <net/if_types.h> 41 1.2.2.2 thorpej #include <net/route.h> 42 1.2.2.2 thorpej 43 1.2.2.2 thorpej #include <netinet/in.h> 44 1.2.2.2 thorpej #include <netinet/in_var.h> 45 1.2.2.2 thorpej #ifndef __NetBSD__ 46 1.2.2.2 thorpej #include <netinet/if_ether.h> 47 1.2.2.2 thorpej #endif 48 1.2.2.2 thorpej 49 1.2.2.2 thorpej #include <netinet6/in6.h> 50 1.2.2.2 thorpej #include <netinet6/ip6.h> 51 1.2.2.2 thorpej #include <netinet6/ip6_var.h> 52 1.2.2.2 thorpej #include <netinet6/in6_ifattach.h> 53 1.2.2.2 thorpej #include <netinet6/ip6.h> 54 1.2.2.2 thorpej #include <netinet6/ip6_var.h> 55 1.2.2.2 thorpej #include <netinet6/nd6.h> 56 1.2.2.2 thorpej 57 1.2.2.2 thorpej static struct in6_addr llsol; 58 1.2.2.2 thorpej 59 1.2.2.2 thorpej struct in6_addr **in6_iflladdr = NULL; 60 1.2.2.2 thorpej unsigned long in6_maxmtu = 0; 61 1.2.2.2 thorpej 62 1.2.2.2 thorpej int found_first_ifid = 0; 63 1.2.2.2 thorpej #define IFID_LEN 8 64 1.2.2.2 thorpej static char first_ifid[IFID_LEN]; 65 1.2.2.2 thorpej 66 1.2.2.2 thorpej static void ieee802_to_eui64 __P((u_int8_t *, u_int8_t *)); 67 1.2.2.2 thorpej 68 1.2.2.2 thorpej static void 69 1.2.2.2 thorpej ieee802_to_eui64(dst, src) 70 1.2.2.2 thorpej u_int8_t *dst; 71 1.2.2.2 thorpej u_int8_t *src; 72 1.2.2.2 thorpej { 73 1.2.2.2 thorpej dst[0] = src[0]; 74 1.2.2.2 thorpej dst[1] = src[1]; 75 1.2.2.2 thorpej dst[2] = src[2]; 76 1.2.2.2 thorpej dst[3] = 0xff; 77 1.2.2.2 thorpej dst[4] = 0xfe; 78 1.2.2.2 thorpej dst[5] = src[3]; 79 1.2.2.2 thorpej dst[6] = src[4]; 80 1.2.2.2 thorpej dst[7] = src[5]; 81 1.2.2.2 thorpej } 82 1.2.2.2 thorpej 83 1.2.2.2 thorpej /* 84 1.2.2.2 thorpej * find first ifid on list of interfaces. 85 1.2.2.2 thorpej */ 86 1.2.2.2 thorpej int 87 1.2.2.2 thorpej in6_ifattach_getifid(ifp0) 88 1.2.2.2 thorpej struct ifnet *ifp0; 89 1.2.2.2 thorpej { 90 1.2.2.2 thorpej struct ifnet *ifp; 91 1.2.2.2 thorpej struct ifaddr *ifa; 92 1.2.2.2 thorpej u_int8_t *addr = NULL; 93 1.2.2.2 thorpej int addrlen = 0; 94 1.2.2.2 thorpej struct sockaddr_dl *sdl; 95 1.2.2.2 thorpej 96 1.2.2.2 thorpej if (found_first_ifid) 97 1.2.2.2 thorpej return 0; 98 1.2.2.2 thorpej 99 1.2.2.2 thorpej for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_list.tqe_next) { 100 1.2.2.2 thorpej if (ifp0 != NULL && ifp0 != ifp) 101 1.2.2.2 thorpej continue; 102 1.2.2.2 thorpej for (ifa = ifp->if_addrlist.tqh_first; 103 1.2.2.2 thorpej ifa; 104 1.2.2.2 thorpej ifa = ifa->ifa_list.tqe_next) { 105 1.2.2.2 thorpej if (ifa->ifa_addr->sa_family != AF_LINK) 106 1.2.2.2 thorpej continue; 107 1.2.2.2 thorpej sdl = (struct sockaddr_dl *)ifa->ifa_addr; 108 1.2.2.2 thorpej if (sdl == NULL) 109 1.2.2.2 thorpej continue; 110 1.2.2.2 thorpej if (sdl->sdl_alen == 0) 111 1.2.2.2 thorpej continue; 112 1.2.2.2 thorpej switch (ifp->if_type) { 113 1.2.2.2 thorpej case IFT_ETHER: 114 1.2.2.2 thorpej case IFT_FDDI: 115 1.2.2.2 thorpej case IFT_ATM: 116 1.2.2.2 thorpej /* what others? */ 117 1.2.2.2 thorpej addr = LLADDR(sdl); 118 1.2.2.2 thorpej addrlen = sdl->sdl_alen; 119 1.2.2.2 thorpej goto found; 120 1.2.2.2 thorpej default: 121 1.2.2.2 thorpej break; 122 1.2.2.2 thorpej } 123 1.2.2.2 thorpej } 124 1.2.2.2 thorpej } 125 1.2.2.3 thorpej #ifdef DEBUG 126 1.2.2.3 thorpej printf("in6_ifattach_getifid: failed to get EUI64"); 127 1.2.2.3 thorpej #endif 128 1.2.2.2 thorpej return EADDRNOTAVAIL; 129 1.2.2.2 thorpej 130 1.2.2.2 thorpej found: 131 1.2.2.2 thorpej switch (addrlen) { 132 1.2.2.2 thorpej case 6: 133 1.2.2.2 thorpej ieee802_to_eui64(first_ifid, addr); 134 1.2.2.2 thorpej found_first_ifid = 1; 135 1.2.2.2 thorpej break; 136 1.2.2.2 thorpej case 8: 137 1.2.2.2 thorpej bcopy(addr, first_ifid, 8); 138 1.2.2.2 thorpej found_first_ifid = 1; 139 1.2.2.2 thorpej break; 140 1.2.2.2 thorpej default: 141 1.2.2.2 thorpej break; 142 1.2.2.2 thorpej } 143 1.2.2.2 thorpej 144 1.2.2.2 thorpej if (found_first_ifid) { 145 1.2.2.3 thorpej printf("%s: supplying EUI64: " 146 1.2.2.3 thorpej "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", 147 1.2.2.2 thorpej ifp->if_xname, 148 1.2.2.2 thorpej first_ifid[0] & 0xff, first_ifid[1] & 0xff, 149 1.2.2.2 thorpej first_ifid[2] & 0xff, first_ifid[3] & 0xff, 150 1.2.2.2 thorpej first_ifid[4] & 0xff, first_ifid[5] & 0xff, 151 1.2.2.2 thorpej first_ifid[6] & 0xff, first_ifid[7] & 0xff); 152 1.2.2.2 thorpej return 0; 153 1.2.2.2 thorpej } else { 154 1.2.2.3 thorpej #ifdef DEBUG 155 1.2.2.3 thorpej printf("in6_ifattach_getifid: failed to get EUI64"); 156 1.2.2.3 thorpej #endif 157 1.2.2.2 thorpej return EADDRNOTAVAIL; 158 1.2.2.2 thorpej } 159 1.2.2.2 thorpej } 160 1.2.2.2 thorpej 161 1.2.2.2 thorpej /* 162 1.2.2.2 thorpej * add link-local address to *pseudo* p2p interfaces. 163 1.2.2.2 thorpej * get called when the first MAC address is made available in in6_ifattach(). 164 1.2.2.2 thorpej */ 165 1.2.2.2 thorpej void 166 1.2.2.2 thorpej in6_ifattach_p2p() 167 1.2.2.2 thorpej { 168 1.2.2.2 thorpej struct ifnet *ifp; 169 1.2.2.2 thorpej 170 1.2.2.2 thorpej /* prevent infinite loop. just in case. */ 171 1.2.2.3 thorpej if (found_first_ifid == 0) 172 1.2.2.2 thorpej return; 173 1.2.2.2 thorpej 174 1.2.2.2 thorpej for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_list.tqe_next) { 175 1.2.2.2 thorpej switch (ifp->if_type) { 176 1.2.2.2 thorpej case IFT_GIF: 177 1.2.2.2 thorpej case IFT_FAITH: 178 1.2.2.2 thorpej /* pseudo interfaces - safe to initialize here */ 179 1.2.2.2 thorpej in6_ifattach(ifp, IN6_IFT_P2P, 0, 0); 180 1.2.2.2 thorpej break; 181 1.2.2.2 thorpej case IFT_SLIP: 182 1.2.2.2 thorpej /* IPv6 is not supported */ 183 1.2.2.2 thorpej break; 184 1.2.2.2 thorpej case IFT_PPP: 185 1.2.2.2 thorpej /* this is not a pseudo interface, skip it */ 186 1.2.2.2 thorpej break; 187 1.2.2.2 thorpej default: 188 1.2.2.2 thorpej break; 189 1.2.2.2 thorpej } 190 1.2.2.2 thorpej } 191 1.2.2.2 thorpej } 192 1.2.2.2 thorpej 193 1.2.2.2 thorpej void 194 1.2.2.2 thorpej in6_ifattach(ifp, type, laddr, noloop) 195 1.2.2.2 thorpej struct ifnet *ifp; 196 1.2.2.2 thorpej u_int type; 197 1.2.2.2 thorpej caddr_t laddr; 198 1.2.2.2 thorpej int noloop; 199 1.2.2.2 thorpej /* xxx sizeof(laddr) */ 200 1.2.2.2 thorpej { 201 1.2.2.2 thorpej static size_t if_indexlim = 8; 202 1.2.2.2 thorpej struct sockaddr_in6 mltaddr; 203 1.2.2.2 thorpej struct sockaddr_in6 mltmask; 204 1.2.2.2 thorpej struct sockaddr_in6 gate; 205 1.2.2.2 thorpej struct sockaddr_in6 mask; 206 1.2.2.2 thorpej 207 1.2.2.2 thorpej struct in6_ifaddr *ia, *ib, *oia; 208 1.2.2.2 thorpej struct ifaddr *ifa; 209 1.2.2.2 thorpej int rtflag = 0; 210 1.2.2.2 thorpej 211 1.2.2.2 thorpej if (type == IN6_IFT_P2P && found_first_ifid == 0) { 212 1.2.2.3 thorpej printf("%s: no ifid available for IPv6 link-local address\n", 213 1.2.2.2 thorpej ifp->if_xname); 214 1.2.2.2 thorpej return; 215 1.2.2.2 thorpej } 216 1.2.2.2 thorpej 217 1.2.2.2 thorpej if ((ifp->if_flags & IFF_MULTICAST) == 0) { 218 1.2.2.3 thorpej printf("%s: not multicast capable, IPv6 not enabled\n", 219 1.2.2.2 thorpej ifp->if_xname); 220 1.2.2.2 thorpej return; 221 1.2.2.2 thorpej } 222 1.2.2.2 thorpej 223 1.2.2.2 thorpej /* 224 1.2.2.2 thorpej * We have some arrays that should be indexed by if_index. 225 1.2.2.2 thorpej * since if_index will grow dynamically, they should grow too. 226 1.2.2.2 thorpej * struct in6_addr **in6_iflladdr 227 1.2.2.2 thorpej */ 228 1.2.2.2 thorpej if (in6_iflladdr == NULL || if_index >= if_indexlim) { 229 1.2.2.2 thorpej size_t n; 230 1.2.2.2 thorpej caddr_t q; 231 1.2.2.2 thorpej 232 1.2.2.2 thorpej while(if_index >= if_indexlim) 233 1.2.2.2 thorpej if_indexlim <<= 1; 234 1.2.2.2 thorpej 235 1.2.2.2 thorpej /* grow in6_iflladdr */ 236 1.2.2.2 thorpej n = if_indexlim * sizeof(struct in6_addr *); 237 1.2.2.2 thorpej q = (caddr_t)malloc(n, M_IFADDR, M_WAITOK); 238 1.2.2.2 thorpej bzero(q, n); 239 1.2.2.2 thorpej if (in6_iflladdr) { 240 1.2.2.2 thorpej bcopy((caddr_t)in6_iflladdr, q, n/2); 241 1.2.2.2 thorpej free((caddr_t)in6_iflladdr, M_IFADDR); 242 1.2.2.2 thorpej } 243 1.2.2.2 thorpej in6_iflladdr = (struct in6_addr **)q; 244 1.2.2.2 thorpej } 245 1.2.2.2 thorpej 246 1.2.2.2 thorpej /* 247 1.2.2.2 thorpej * To prevent to assign link-local address to PnP network 248 1.2.2.2 thorpej * cards multiple times. 249 1.2.2.2 thorpej * This is lengthy for P2P and LOOP but works. 250 1.2.2.2 thorpej */ 251 1.2.2.2 thorpej ifa = TAILQ_FIRST(&ifp->if_addrlist); 252 1.2.2.2 thorpej if (ifa != NULL) { 253 1.2.2.2 thorpej for ( ; ifa; ifa = TAILQ_NEXT(ifa, ifa_list)) { 254 1.2.2.2 thorpej if (ifa->ifa_addr->sa_family != AF_INET6) 255 1.2.2.2 thorpej continue; 256 1.2.2.2 thorpej if (IN6_IS_ADDR_LINKLOCAL(&satosin6(ifa->ifa_addr)->sin6_addr)) 257 1.2.2.2 thorpej return; 258 1.2.2.2 thorpej } 259 1.2.2.2 thorpej } else 260 1.2.2.2 thorpej TAILQ_INIT(&ifp->if_addrlist); 261 1.2.2.2 thorpej 262 1.2.2.2 thorpej /* 263 1.2.2.2 thorpej * link-local address 264 1.2.2.2 thorpej */ 265 1.2.2.2 thorpej ia = (struct in6_ifaddr *)malloc(sizeof(*ia), M_IFADDR, M_WAITOK); 266 1.2.2.2 thorpej bzero((caddr_t)ia, sizeof(*ia)); 267 1.2.2.2 thorpej ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr; 268 1.2.2.2 thorpej ia->ia_ifa.ifa_dstaddr = (struct sockaddr *)&ia->ia_dstaddr; 269 1.2.2.2 thorpej ia->ia_ifa.ifa_netmask = (struct sockaddr *)&ia->ia_prefixmask; 270 1.2.2.2 thorpej ia->ia_ifp = ifp; 271 1.2.2.2 thorpej TAILQ_INSERT_TAIL(&ifp->if_addrlist, (struct ifaddr *)ia, ifa_list); 272 1.2.2.2 thorpej /* 273 1.2.2.2 thorpej * Also link into the IPv6 address chain beginning with in6_ifaddr. 274 1.2.2.2 thorpej * kazu opposed it, but itojun & jinmei wanted. 275 1.2.2.2 thorpej */ 276 1.2.2.2 thorpej if ((oia = in6_ifaddr) != NULL) { 277 1.2.2.2 thorpej for (; oia->ia_next; oia = oia->ia_next) 278 1.2.2.2 thorpej continue; 279 1.2.2.2 thorpej oia->ia_next = ia; 280 1.2.2.2 thorpej } else 281 1.2.2.2 thorpej in6_ifaddr = ia; 282 1.2.2.2 thorpej 283 1.2.2.2 thorpej ia->ia_prefixmask.sin6_len = sizeof(struct sockaddr_in6); 284 1.2.2.2 thorpej ia->ia_prefixmask.sin6_family = AF_INET6; 285 1.2.2.2 thorpej ia->ia_prefixmask.sin6_addr = in6mask64; 286 1.2.2.2 thorpej 287 1.2.2.2 thorpej bzero(&ia->ia_addr, sizeof(struct sockaddr_in6)); 288 1.2.2.2 thorpej ia->ia_addr.sin6_len = sizeof(struct sockaddr_in6); 289 1.2.2.2 thorpej ia->ia_addr.sin6_family = AF_INET6; 290 1.2.2.2 thorpej ia->ia_addr.sin6_addr.s6_addr16[0] = htons(0xfe80); 291 1.2.2.2 thorpej ia->ia_addr.sin6_addr.s6_addr16[1] = htons(ifp->if_index); 292 1.2.2.2 thorpej ia->ia_addr.sin6_addr.s6_addr32[1] = 0; 293 1.2.2.2 thorpej 294 1.2.2.2 thorpej switch (type) { 295 1.2.2.2 thorpej case IN6_IFT_LOOP: 296 1.2.2.2 thorpej ia->ia_addr.sin6_addr.s6_addr32[2] = 0; 297 1.2.2.2 thorpej ia->ia_addr.sin6_addr.s6_addr32[3] = htonl(1); 298 1.2.2.2 thorpej break; 299 1.2.2.2 thorpej case IN6_IFT_802: 300 1.2.2.2 thorpej ia->ia_ifa.ifa_rtrequest = nd6_rtrequest; 301 1.2.2.2 thorpej ia->ia_ifa.ifa_flags |= RTF_CLONING; 302 1.2.2.2 thorpej rtflag = RTF_CLONING; 303 1.2.2.2 thorpej /* fall through */ 304 1.2.2.2 thorpej case IN6_IFT_P2P802: 305 1.2.2.2 thorpej if (laddr == NULL) 306 1.2.2.2 thorpej break; 307 1.2.2.2 thorpej ieee802_to_eui64(&ia->ia_addr.sin6_addr.s6_addr8[8], laddr); 308 1.2.2.2 thorpej /* set global bit */ 309 1.2.2.2 thorpej ia->ia_addr.sin6_addr.s6_addr8[8] |= 0x02; 310 1.2.2.3 thorpej if (found_first_ifid == 0) { 311 1.2.2.2 thorpej if (in6_ifattach_getifid(ifp) == 0) 312 1.2.2.2 thorpej in6_ifattach_p2p(); 313 1.2.2.2 thorpej } 314 1.2.2.2 thorpej break; 315 1.2.2.2 thorpej case IN6_IFT_P2P: 316 1.2.2.2 thorpej bcopy((caddr_t)first_ifid, 317 1.2.2.2 thorpej (caddr_t)&ia->ia_addr.sin6_addr.s6_addr8[8], 318 1.2.2.2 thorpej IFID_LEN); 319 1.2.2.2 thorpej break; 320 1.2.2.2 thorpej } 321 1.2.2.2 thorpej 322 1.2.2.2 thorpej ia->ia_ifa.ifa_metric = ifp->if_metric; 323 1.2.2.2 thorpej 324 1.2.2.2 thorpej if (ifp->if_ioctl != NULL) { 325 1.2.2.2 thorpej int s; 326 1.2.2.2 thorpej int error; 327 1.2.2.2 thorpej 328 1.2.2.2 thorpej /* 329 1.2.2.2 thorpej * give the interface a chance to initialize, in case this 330 1.2.2.2 thorpej * is the first address to be added. 331 1.2.2.2 thorpej */ 332 1.2.2.2 thorpej s = splimp(); 333 1.2.2.2 thorpej error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (caddr_t)ia); 334 1.2.2.2 thorpej splx(s); 335 1.2.2.2 thorpej 336 1.2.2.2 thorpej if (error) { 337 1.2.2.2 thorpej switch (error) { 338 1.2.2.2 thorpej case EAFNOSUPPORT: 339 1.2.2.3 thorpej printf("%s: IPv6 not supported\n", 340 1.2.2.2 thorpej ifp->if_xname); 341 1.2.2.2 thorpej break; 342 1.2.2.2 thorpej default: 343 1.2.2.3 thorpej printf("%s: SIOCSIFADDR error %d\n", 344 1.2.2.2 thorpej ifp->if_xname, error); 345 1.2.2.2 thorpej break; 346 1.2.2.2 thorpej } 347 1.2.2.2 thorpej 348 1.2.2.2 thorpej /* undo changes */ 349 1.2.2.2 thorpej TAILQ_REMOVE(&ifp->if_addrlist, (struct ifaddr *)ia, ifa_list); 350 1.2.2.2 thorpej if (oia) 351 1.2.2.2 thorpej oia->ia_next = ia->ia_next; 352 1.2.2.2 thorpej else 353 1.2.2.2 thorpej in6_ifaddr = ia->ia_next; 354 1.2.2.2 thorpej free(ia, M_IFADDR); 355 1.2.2.2 thorpej return; 356 1.2.2.2 thorpej } 357 1.2.2.2 thorpej } 358 1.2.2.2 thorpej 359 1.2.2.2 thorpej /* add route to the interface. */ 360 1.2.2.2 thorpej rtrequest(RTM_ADD, 361 1.2.2.2 thorpej (struct sockaddr *)&ia->ia_addr, 362 1.2.2.2 thorpej (struct sockaddr *)&ia->ia_addr, 363 1.2.2.2 thorpej (struct sockaddr *)&ia->ia_prefixmask, 364 1.2.2.2 thorpej RTF_UP|rtflag, 365 1.2.2.2 thorpej (struct rtentry **)0); 366 1.2.2.2 thorpej ia->ia_flags |= IFA_ROUTE; 367 1.2.2.2 thorpej 368 1.2.2.2 thorpej 369 1.2.2.2 thorpej if (type == IN6_IFT_P2P || type == IN6_IFT_P2P802) { 370 1.2.2.2 thorpej /* 371 1.2.2.2 thorpej * route local address to loopback 372 1.2.2.2 thorpej */ 373 1.2.2.2 thorpej bzero(&gate, sizeof(gate)); 374 1.2.2.2 thorpej gate.sin6_len = sizeof(struct sockaddr_in6); 375 1.2.2.2 thorpej gate.sin6_family = AF_INET6; 376 1.2.2.2 thorpej gate.sin6_addr = in6addr_loopback; 377 1.2.2.2 thorpej bzero(&mask, sizeof(mask)); 378 1.2.2.2 thorpej mask.sin6_len = sizeof(struct sockaddr_in6); 379 1.2.2.2 thorpej mask.sin6_family = AF_INET6; 380 1.2.2.2 thorpej mask.sin6_addr = in6mask64; 381 1.2.2.2 thorpej rtrequest(RTM_ADD, 382 1.2.2.2 thorpej (struct sockaddr *)&ia->ia_addr, 383 1.2.2.2 thorpej (struct sockaddr *)&gate, 384 1.2.2.2 thorpej (struct sockaddr *)&mask, 385 1.2.2.2 thorpej RTF_UP|RTF_HOST, 386 1.2.2.2 thorpej (struct rtentry **)0); 387 1.2.2.2 thorpej } 388 1.2.2.2 thorpej 389 1.2.2.2 thorpej /* 390 1.2.2.2 thorpej * loopback address 391 1.2.2.2 thorpej */ 392 1.2.2.2 thorpej ib = (struct in6_ifaddr *)NULL; 393 1.2.2.2 thorpej if (type == IN6_IFT_LOOP) { 394 1.2.2.2 thorpej ib = (struct in6_ifaddr *) 395 1.2.2.2 thorpej malloc(sizeof(*ib), M_IFADDR, M_WAITOK); 396 1.2.2.2 thorpej bzero((caddr_t)ib, sizeof(*ib)); 397 1.2.2.2 thorpej ib->ia_ifa.ifa_addr = (struct sockaddr *)&ib->ia_addr; 398 1.2.2.2 thorpej ib->ia_ifa.ifa_dstaddr = (struct sockaddr *)&ib->ia_dstaddr; 399 1.2.2.2 thorpej ib->ia_ifa.ifa_netmask = (struct sockaddr *)&ib->ia_prefixmask; 400 1.2.2.2 thorpej ib->ia_ifp = ifp; 401 1.2.2.2 thorpej 402 1.2.2.2 thorpej ia->ia_next = ib; 403 1.2.2.2 thorpej TAILQ_INSERT_TAIL(&ifp->if_addrlist, (struct ifaddr *)ib, 404 1.2.2.2 thorpej ifa_list); 405 1.2.2.2 thorpej 406 1.2.2.2 thorpej ib->ia_prefixmask.sin6_len = sizeof(struct sockaddr_in6); 407 1.2.2.2 thorpej ib->ia_prefixmask.sin6_family = AF_INET6; 408 1.2.2.2 thorpej ib->ia_prefixmask.sin6_addr = in6mask128; 409 1.2.2.2 thorpej ib->ia_addr.sin6_len = sizeof(struct sockaddr_in6); 410 1.2.2.2 thorpej ib->ia_addr.sin6_family = AF_INET6; 411 1.2.2.2 thorpej ib->ia_addr.sin6_addr = in6addr_loopback; 412 1.2.2.2 thorpej #ifdef __bsdi__ 413 1.2.2.2 thorpej /* 414 1.2.2.2 thorpej * It is necessary to set the loopback address to the dstaddr 415 1.2.2.2 thorpej * field at least for BSDI. Without this setting, the BSDI 416 1.2.2.2 thorpej * version of ifa_ifwithroute() rejects to add a route 417 1.2.2.2 thorpej * to the loopback interface. 418 1.2.2.2 thorpej */ 419 1.2.2.2 thorpej ib->ia_dstaddr.sin6_len = sizeof(struct sockaddr_in6); 420 1.2.2.2 thorpej ib->ia_dstaddr.sin6_family = AF_INET6; 421 1.2.2.2 thorpej ib->ia_dstaddr.sin6_addr = in6addr_loopback; 422 1.2.2.2 thorpej #endif /* __bsdi__ */ 423 1.2.2.2 thorpej 424 1.2.2.2 thorpej ib->ia_ifa.ifa_metric = ifp->if_metric; 425 1.2.2.2 thorpej 426 1.2.2.2 thorpej rtrequest(RTM_ADD, 427 1.2.2.2 thorpej (struct sockaddr *)&ib->ia_addr, 428 1.2.2.2 thorpej (struct sockaddr *)&ib->ia_addr, 429 1.2.2.2 thorpej (struct sockaddr *)&ib->ia_prefixmask, 430 1.2.2.2 thorpej RTF_UP|RTF_HOST, 431 1.2.2.2 thorpej (struct rtentry **)0); 432 1.2.2.2 thorpej 433 1.2.2.2 thorpej ib->ia_flags |= IFA_ROUTE; 434 1.2.2.2 thorpej } 435 1.2.2.2 thorpej 436 1.2.2.2 thorpej /* 437 1.2.2.2 thorpej * join multicast 438 1.2.2.2 thorpej */ 439 1.2.2.2 thorpej if (ifp->if_flags & IFF_MULTICAST) { 440 1.2.2.2 thorpej int error; /* not used */ 441 1.2.2.2 thorpej 442 1.2.2.2 thorpej #if !defined(__FreeBSD__) || __FreeBSD__ < 3 443 1.2.2.2 thorpej /* Restore saved multicast addresses(if any). */ 444 1.2.2.2 thorpej in6_restoremkludge(ia, ifp); 445 1.2.2.2 thorpej #endif 446 1.2.2.2 thorpej 447 1.2.2.2 thorpej bzero(&mltmask, sizeof(mltmask)); 448 1.2.2.2 thorpej mltmask.sin6_len = sizeof(struct sockaddr_in6); 449 1.2.2.2 thorpej mltmask.sin6_family = AF_INET6; 450 1.2.2.2 thorpej mltmask.sin6_addr = in6mask32; 451 1.2.2.2 thorpej 452 1.2.2.2 thorpej /* 453 1.2.2.2 thorpej * join link-local all-nodes address 454 1.2.2.2 thorpej */ 455 1.2.2.2 thorpej bzero(&mltaddr, sizeof(mltaddr)); 456 1.2.2.2 thorpej mltaddr.sin6_len = sizeof(struct sockaddr_in6); 457 1.2.2.2 thorpej mltaddr.sin6_family = AF_INET6; 458 1.2.2.2 thorpej mltaddr.sin6_addr = in6addr_linklocal_allnodes; 459 1.2.2.2 thorpej mltaddr.sin6_addr.s6_addr16[1] = htons(ifp->if_index); 460 1.2.2.2 thorpej rtrequest(RTM_ADD, 461 1.2.2.2 thorpej (struct sockaddr *)&mltaddr, 462 1.2.2.2 thorpej (struct sockaddr *)&ia->ia_addr, 463 1.2.2.2 thorpej (struct sockaddr *)&mltmask, 464 1.2.2.2 thorpej RTF_UP|RTF_CLONING, /* xxx */ 465 1.2.2.2 thorpej (struct rtentry **)0); 466 1.2.2.2 thorpej (void)in6_addmulti(&mltaddr.sin6_addr, ifp, &error); 467 1.2.2.2 thorpej 468 1.2.2.2 thorpej if (type == IN6_IFT_LOOP) { 469 1.2.2.2 thorpej /* 470 1.2.2.2 thorpej * join node-local all-nodes address 471 1.2.2.2 thorpej */ 472 1.2.2.2 thorpej mltaddr.sin6_addr = in6addr_nodelocal_allnodes; 473 1.2.2.2 thorpej rtrequest(RTM_ADD, 474 1.2.2.2 thorpej (struct sockaddr *)&mltaddr, 475 1.2.2.2 thorpej (struct sockaddr *)&ib->ia_addr, 476 1.2.2.2 thorpej (struct sockaddr *)&mltmask, 477 1.2.2.2 thorpej RTF_UP, 478 1.2.2.2 thorpej (struct rtentry **)0); 479 1.2.2.2 thorpej (void)in6_addmulti(&mltaddr.sin6_addr, ifp, &error); 480 1.2.2.2 thorpej } else { 481 1.2.2.2 thorpej /* 482 1.2.2.2 thorpej * join solicited multicast address 483 1.2.2.2 thorpej */ 484 1.2.2.2 thorpej bzero(&llsol, sizeof(llsol)); 485 1.2.2.2 thorpej llsol.s6_addr16[0] = htons(0xff02); 486 1.2.2.2 thorpej llsol.s6_addr16[1] = htons(ifp->if_index); 487 1.2.2.2 thorpej llsol.s6_addr32[1] = 0; 488 1.2.2.2 thorpej llsol.s6_addr32[2] = htonl(1); 489 1.2.2.2 thorpej llsol.s6_addr32[3] = ia->ia_addr.sin6_addr.s6_addr32[3]; 490 1.2.2.2 thorpej llsol.s6_addr8[12] = 0xff; 491 1.2.2.2 thorpej (void)in6_addmulti(&llsol, ifp, &error); 492 1.2.2.2 thorpej } 493 1.2.2.2 thorpej } 494 1.2.2.2 thorpej 495 1.2.2.2 thorpej /* update dynamically. */ 496 1.2.2.2 thorpej in6_iflladdr[ifp->if_index] = &ia->ia_addr.sin6_addr; 497 1.2.2.2 thorpej if (in6_maxmtu < ifp->if_mtu) 498 1.2.2.2 thorpej in6_maxmtu = ifp->if_mtu; 499 1.2.2.2 thorpej 500 1.2.2.2 thorpej /* initialize NDP variables */ 501 1.2.2.2 thorpej nd6_ifattach(ifp); 502 1.2.2.2 thorpej 503 1.2.2.2 thorpej /* mark the address TENTATIVE, if needed. */ 504 1.2.2.2 thorpej switch (ifp->if_type) { 505 1.2.2.2 thorpej case IFT_ETHER: 506 1.2.2.2 thorpej case IFT_FDDI: 507 1.2.2.2 thorpej #if 0 508 1.2.2.2 thorpej case IFT_ATM: 509 1.2.2.2 thorpej case IFT_SLIP: 510 1.2.2.2 thorpej case IFT_PPP: 511 1.2.2.2 thorpej #endif 512 1.2.2.2 thorpej ia->ia6_flags |= IN6_IFF_TENTATIVE; 513 1.2.2.2 thorpej /* nd6_dad_start() will be called in in6_if_up */ 514 1.2.2.2 thorpej break; 515 1.2.2.2 thorpej case IFT_GIF: 516 1.2.2.2 thorpej case IFT_LOOP: 517 1.2.2.2 thorpej case IFT_FAITH: 518 1.2.2.2 thorpej default: 519 1.2.2.2 thorpej break; 520 1.2.2.2 thorpej } 521 1.2.2.2 thorpej 522 1.2.2.2 thorpej return; 523 1.2.2.2 thorpej } 524 1.2.2.2 thorpej 525 1.2.2.2 thorpej void 526 1.2.2.2 thorpej in6_ifdetach(ifp) 527 1.2.2.2 thorpej struct ifnet *ifp; 528 1.2.2.2 thorpej { 529 1.2.2.2 thorpej struct in6_ifaddr *ia, *oia; 530 1.2.2.2 thorpej struct ifaddr *ifa; 531 1.2.2.2 thorpej struct rtentry *rt; 532 1.2.2.2 thorpej short rtflags; 533 1.2.2.2 thorpej 534 1.2.2.2 thorpej for (ifa = ifp->if_addrlist.tqh_first; ifa; ifa = ifa->ifa_list.tqe_next) { 535 1.2.2.2 thorpej if (ifa->ifa_addr->sa_family != AF_INET6 536 1.2.2.2 thorpej || !IN6_IS_ADDR_LINKLOCAL(&satosin6(&ifa->ifa_addr)->sin6_addr)) { 537 1.2.2.2 thorpej continue; 538 1.2.2.2 thorpej } 539 1.2.2.2 thorpej 540 1.2.2.2 thorpej ia = (struct in6_ifaddr *)ifa; 541 1.2.2.2 thorpej 542 1.2.2.2 thorpej /* remove from the routing table */ 543 1.2.2.2 thorpej if ((ia->ia_flags & IFA_ROUTE) 544 1.2.2.2 thorpej && (rt = rtalloc1((struct sockaddr *)&ia->ia_addr, 0))) { 545 1.2.2.2 thorpej rtflags = rt->rt_flags; 546 1.2.2.2 thorpej rtfree(rt); 547 1.2.2.2 thorpej rtrequest(RTM_DELETE, 548 1.2.2.2 thorpej (struct sockaddr *)&ia->ia_addr, 549 1.2.2.2 thorpej (struct sockaddr *)&ia->ia_addr, 550 1.2.2.2 thorpej (struct sockaddr *)&ia->ia_prefixmask, 551 1.2.2.2 thorpej rtflags, (struct rtentry **)0); 552 1.2.2.2 thorpej } 553 1.2.2.2 thorpej 554 1.2.2.2 thorpej /* remove from the linked list */ 555 1.2.2.2 thorpej TAILQ_REMOVE(&ifp->if_addrlist, (struct ifaddr *)ia, ifa_list); 556 1.2.2.2 thorpej 557 1.2.2.2 thorpej /* also remove from the IPv6 address chain(itojun&jinmei) */ 558 1.2.2.2 thorpej oia = ia; 559 1.2.2.2 thorpej if (oia == (ia = in6_ifaddr)) 560 1.2.2.2 thorpej in6_ifaddr = ia->ia_next; 561 1.2.2.2 thorpej else { 562 1.2.2.2 thorpej while (ia->ia_next && (ia->ia_next != oia)) 563 1.2.2.2 thorpej ia = ia->ia_next; 564 1.2.2.2 thorpej if (ia->ia_next) 565 1.2.2.2 thorpej ia->ia_next = oia->ia_next; 566 1.2.2.3 thorpej #ifdef DEBUG 567 1.2.2.2 thorpej else 568 1.2.2.3 thorpej printf("%s: didn't unlink in6ifaddr from " 569 1.2.2.3 thorpej "list\n", ifp->if_xname); 570 1.2.2.3 thorpej #endif 571 1.2.2.2 thorpej } 572 1.2.2.2 thorpej 573 1.2.2.2 thorpej free(ia, M_IFADDR); 574 1.2.2.2 thorpej } 575 1.2.2.2 thorpej } 576
Indexes created Fri Oct 03 15:10:06 GMT 2025