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