in6.c (99124467fc36229ace556d16d998ca29bd87de66) in6.c (09a52a5532c1b2c0c21e383f06fea52ccd9080b7)
1/* $FreeBSD$ */
2/* $KAME: in6.c,v 1.259 2002/01/21 11:37:50 keiichi Exp $ */
3
4/*-
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without

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921 * RA, it is called under an interrupt context. So, we should
922 * call malloc with M_NOWAIT.
923 */
924 ia = (struct in6_ifaddr *) malloc(sizeof(*ia), M_IFADDR,
925 M_NOWAIT);
926 if (ia == NULL)
927 return (ENOBUFS);
928 bzero((caddr_t)ia, sizeof(*ia));
1/* $FreeBSD$ */
2/* $KAME: in6.c,v 1.259 2002/01/21 11:37:50 keiichi Exp $ */
3
4/*-
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without

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921 * RA, it is called under an interrupt context. So, we should
922 * call malloc with M_NOWAIT.
923 */
924 ia = (struct in6_ifaddr *) malloc(sizeof(*ia), M_IFADDR,
925 M_NOWAIT);
926 if (ia == NULL)
927 return (ENOBUFS);
928 bzero((caddr_t)ia, sizeof(*ia));
929 LIST_INIT(&ia->ia6_memberships);
929 /* Initialize the address and masks, and put time stamp */
930 IFA_LOCK_INIT(&ia->ia_ifa);
931 ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
932 ia->ia_addr.sin6_family = AF_INET6;
933 ia->ia_addr.sin6_len = sizeof(ia->ia_addr);
934 ia->ia6_createtime = time_second;
935 if ((ifp->if_flags & (IFF_POINTOPOINT | IFF_LOOPBACK)) != 0) {
936 /*

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1078 * transmission of the corresponding MLD report to
1079 * avoid report collision.
1080 * [draft-ietf-ipv6-rfc2462bis-02.txt]
1081 */
1082 delay = arc4random() %
1083 (MAX_RTR_SOLICITATION_DELAY * hz);
1084 }
1085 imm = in6_joingroup(ifp, &llsol, &error, delay);
930 /* Initialize the address and masks, and put time stamp */
931 IFA_LOCK_INIT(&ia->ia_ifa);
932 ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
933 ia->ia_addr.sin6_family = AF_INET6;
934 ia->ia_addr.sin6_len = sizeof(ia->ia_addr);
935 ia->ia6_createtime = time_second;
936 if ((ifp->if_flags & (IFF_POINTOPOINT | IFF_LOOPBACK)) != 0) {
937 /*

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1079 * transmission of the corresponding MLD report to
1080 * avoid report collision.
1081 * [draft-ietf-ipv6-rfc2462bis-02.txt]
1082 */
1083 delay = arc4random() %
1084 (MAX_RTR_SOLICITATION_DELAY * hz);
1085 }
1086 imm = in6_joingroup(ifp, &llsol, &error, delay);
1086 if (error != 0) {
1087 if (imm == NULL) {
1087 nd6log((LOG_WARNING,
1088 "in6_update_ifa: addmulti failed for "
1089 "%s on %s (errno=%d)\n",
1090 ip6_sprintf(ip6buf, &llsol), if_name(ifp),
1091 error));
1092 in6_purgeaddr((struct ifaddr *)ia);
1093 return (error);
1094 }
1088 nd6log((LOG_WARNING,
1089 "in6_update_ifa: addmulti failed for "
1090 "%s on %s (errno=%d)\n",
1091 ip6_sprintf(ip6buf, &llsol), if_name(ifp),
1092 error));
1093 in6_purgeaddr((struct ifaddr *)ia);
1094 return (error);
1095 }
1096 LIST_INSERT_HEAD(&ia->ia6_memberships,
1097 imm, i6mm_chain);
1095 in6m_sol = imm->i6mm_maddr;
1096
1097 bzero(&mltmask, sizeof(mltmask));
1098 mltmask.sin6_len = sizeof(struct sockaddr_in6);
1099 mltmask.sin6_family = AF_INET6;
1100 mltmask.sin6_addr = in6mask32;
1101#define MLTMASK_LEN 4 /* mltmask's masklen (=32bit=4octet) */
1102

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1168 if (!imm) {
1169 nd6log((LOG_WARNING,
1170 "in6_update_ifa: addmulti failed for "
1171 "%s on %s (errno=%d)\n",
1172 ip6_sprintf(ip6buf, &mltaddr.sin6_addr),
1173 if_name(ifp), error));
1174 goto cleanup;
1175 }
1098 in6m_sol = imm->i6mm_maddr;
1099
1100 bzero(&mltmask, sizeof(mltmask));
1101 mltmask.sin6_len = sizeof(struct sockaddr_in6);
1102 mltmask.sin6_family = AF_INET6;
1103 mltmask.sin6_addr = in6mask32;
1104#define MLTMASK_LEN 4 /* mltmask's masklen (=32bit=4octet) */
1105

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1171 if (!imm) {
1172 nd6log((LOG_WARNING,
1173 "in6_update_ifa: addmulti failed for "
1174 "%s on %s (errno=%d)\n",
1175 ip6_sprintf(ip6buf, &mltaddr.sin6_addr),
1176 if_name(ifp), error));
1177 goto cleanup;
1178 }
1179 LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
1176
1177 /*
1178 * join node information group address
1179 */
1180#define hostnamelen strlen(hostname)
1181 delay = 0;
1182 if ((flags & IN6_IFAUPDATE_DADDELAY)) {
1183 /*

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1193 delay); /* XXX jinmei */
1194 if (!imm) {
1195 nd6log((LOG_WARNING, "in6_update_ifa: "
1196 "addmulti failed for %s on %s "
1197 "(errno=%d)\n",
1198 ip6_sprintf(ip6buf, &mltaddr.sin6_addr),
1199 if_name(ifp), error));
1200 /* XXX not very fatal, go on... */
1180
1181 /*
1182 * join node information group address
1183 */
1184#define hostnamelen strlen(hostname)
1185 delay = 0;
1186 if ((flags & IN6_IFAUPDATE_DADDELAY)) {
1187 /*

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1197 delay); /* XXX jinmei */
1198 if (!imm) {
1199 nd6log((LOG_WARNING, "in6_update_ifa: "
1200 "addmulti failed for %s on %s "
1201 "(errno=%d)\n",
1202 ip6_sprintf(ip6buf, &mltaddr.sin6_addr),
1203 if_name(ifp), error));
1204 /* XXX not very fatal, go on... */
1205 } else {
1206 LIST_INSERT_HEAD(&ia->ia6_memberships,
1207 imm, i6mm_chain);
1201 }
1202 }
1203#undef hostnamelen
1204
1205 /*
1206 * join interface-local all-nodes address.
1207 * (ff01::1%ifN, and ff01::%ifN/32)
1208 */

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1255 if (!imm) {
1256 nd6log((LOG_WARNING, "in6_update_ifa: "
1257 "addmulti failed for %s on %s "
1258 "(errno=%d)\n",
1259 ip6_sprintf(ip6buf, &mltaddr.sin6_addr),
1260 if_name(ifp), error));
1261 goto cleanup;
1262 }
1208 }
1209 }
1210#undef hostnamelen
1211
1212 /*
1213 * join interface-local all-nodes address.
1214 * (ff01::1%ifN, and ff01::%ifN/32)
1215 */

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1262 if (!imm) {
1263 nd6log((LOG_WARNING, "in6_update_ifa: "
1264 "addmulti failed for %s on %s "
1265 "(errno=%d)\n",
1266 ip6_sprintf(ip6buf, &mltaddr.sin6_addr),
1267 if_name(ifp), error));
1268 goto cleanup;
1269 }
1270 LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
1263#undef MLTMASK_LEN
1264 }
1265
1266 /*
1267 * Perform DAD, if needed.
1268 * XXX It may be of use, if we can administratively
1269 * disable DAD.
1270 */

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1319
1320void
1321in6_purgeaddr(ifa)
1322 struct ifaddr *ifa;
1323{
1324 struct ifnet *ifp = ifa->ifa_ifp;
1325 struct in6_ifaddr *ia = (struct in6_ifaddr *) ifa;
1326 char ip6buf[INET6_ADDRSTRLEN];
1271#undef MLTMASK_LEN
1272 }
1273
1274 /*
1275 * Perform DAD, if needed.
1276 * XXX It may be of use, if we can administratively
1277 * disable DAD.
1278 */

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1327
1328void
1329in6_purgeaddr(ifa)
1330 struct ifaddr *ifa;
1331{
1332 struct ifnet *ifp = ifa->ifa_ifp;
1333 struct in6_ifaddr *ia = (struct in6_ifaddr *) ifa;
1334 char ip6buf[INET6_ADDRSTRLEN];
1335 struct in6_multi_mship *imm;
1327
1328 /* stop DAD processing */
1329 nd6_dad_stop(ifa);
1330
1331 /*
1332 * delete route to the destination of the address being purged.
1333 * The interface must be p2p or loopback in this case.
1334 */

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1345 /* proceed anyway... */
1346 } else
1347 ia->ia_flags &= ~IFA_ROUTE;
1348 }
1349
1350 /* Remove ownaddr's loopback rtentry, if it exists. */
1351 in6_ifremloop(&(ia->ia_ifa));
1352
1336
1337 /* stop DAD processing */
1338 nd6_dad_stop(ifa);
1339
1340 /*
1341 * delete route to the destination of the address being purged.
1342 * The interface must be p2p or loopback in this case.
1343 */

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1354 /* proceed anyway... */
1355 } else
1356 ia->ia_flags &= ~IFA_ROUTE;
1357 }
1358
1359 /* Remove ownaddr's loopback rtentry, if it exists. */
1360 in6_ifremloop(&(ia->ia_ifa));
1361
1353 if (ifp->if_flags & IFF_MULTICAST) {
1354 /*
1355 * delete solicited multicast addr for deleting host id
1356 */
1357 struct in6_multi *in6m;
1358 struct in6_addr llsol;
1359 bzero(&llsol, sizeof(struct in6_addr));
1360 llsol.s6_addr32[0] = IPV6_ADDR_INT32_MLL;
1361 llsol.s6_addr32[1] = 0;
1362 llsol.s6_addr32[2] = htonl(1);
1363 llsol.s6_addr32[3] =
1364 ia->ia_addr.sin6_addr.s6_addr32[3];
1365 llsol.s6_addr8[12] = 0xff;
1366 (void)in6_setscope(&llsol, ifp, NULL); /* XXX proceed anyway */
1367
1368 IN6_LOOKUP_MULTI(llsol, ifp, in6m);
1369 if (in6m)
1370 in6_delmulti(in6m);
1362 /*
1363 * leave from multicast groups we have joined for the interface
1364 */
1365 while ((imm = ia->ia6_memberships.lh_first) != NULL) {
1366 LIST_REMOVE(imm, i6mm_chain);
1367 in6_leavegroup(imm);
1371 }
1372
1373 in6_unlink_ifa(ia, ifp);
1374}
1375
1376static void
1377in6_unlink_ifa(ia, ifp)
1378 struct in6_ifaddr *ia;

--- 1025 unchanged lines hidden --- 		1368 }
1369
1370 in6_unlink_ifa(ia, ifp);
1371}
1372
1373static void
1374in6_unlink_ifa(ia, ifp)
1375 struct in6_ifaddr *ia;

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