In preparation for multi-FIB IPv6 support, factor the code for joining
and leaving multicast groups out from in6_update_ifa() and in6_purgeaddr(). Sponsored by: Cisco Systems, Inc.
This commit is contained in:
Bjoern A. Zeeb
parent
1616ed91c2
commit
5490110cf5
@ -820,6 +820,169 @@ in6_control(struct socket *so, u_long cmd, caddr_t data,
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return (error);
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}
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/*
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* Join necessary multicast groups. Factored out from in6_update_ifa().
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* This entire work should only be done once, for the default FIB.
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*/
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static int
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in6_update_ifa_join_mc(struct ifnet *ifp, struct in6_aliasreq *ifra,
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struct in6_ifaddr *ia, int flags, struct in6_multi **in6m_sol)
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{
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char ip6buf[INET6_ADDRSTRLEN];
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struct sockaddr_in6 mltaddr, mltmask;
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struct in6_addr llsol;
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struct in6_multi_mship *imm;
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struct rtentry *rt;
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int delay, error;
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KASSERT(in6m_sol != NULL, ("%s: in6m_sol is NULL", __func__));
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/* Join solicited multicast addr for new host id. */
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bzero(&llsol, sizeof(struct in6_addr));
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llsol.s6_addr32[0] = IPV6_ADDR_INT32_MLL;
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llsol.s6_addr32[1] = 0;
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llsol.s6_addr32[2] = htonl(1);
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llsol.s6_addr32[3] = ifra->ifra_addr.sin6_addr.s6_addr32[3];
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llsol.s6_addr8[12] = 0xff;
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if ((error = in6_setscope(&llsol, ifp, NULL)) != 0) {
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/* XXX: should not happen */
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log(LOG_ERR, "%s: in6_setscope failed\n", __func__);
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goto cleanup;
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}
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delay = 0;
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if ((flags & IN6_IFAUPDATE_DADDELAY)) {
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/*
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* We need a random delay for DAD on the address being
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* configured. It also means delaying transmission of the
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* corresponding MLD report to avoid report collision.
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* [RFC 4861, Section 6.3.7]
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*/
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delay = arc4random() % (MAX_RTR_SOLICITATION_DELAY * hz);
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}
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imm = in6_joingroup(ifp, &llsol, &error, delay);
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if (imm == NULL) {
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nd6log((LOG_WARNING, "%s: addmulti failed for %s on %s "
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"(errno=%d)\n", __func__, ip6_sprintf(ip6buf, &llsol),
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if_name(ifp), error));
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goto cleanup;
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}
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LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
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*in6m_sol = imm->i6mm_maddr;
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bzero(&mltmask, sizeof(mltmask));
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mltmask.sin6_len = sizeof(struct sockaddr_in6);
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mltmask.sin6_family = AF_INET6;
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mltmask.sin6_addr = in6mask32;
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#define MLTMASK_LEN 4 /* mltmask's masklen (=32bit=4octet) */
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/*
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* Join link-local all-nodes address.
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*/
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bzero(&mltaddr, sizeof(mltaddr));
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mltaddr.sin6_len = sizeof(struct sockaddr_in6);
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mltaddr.sin6_family = AF_INET6;
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mltaddr.sin6_addr = in6addr_linklocal_allnodes;
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if ((error = in6_setscope(&mltaddr.sin6_addr, ifp, NULL)) != 0)
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goto cleanup; /* XXX: should not fail */
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/*
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* XXX: do we really need this automatic routes? We should probably
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* reconsider this stuff. Most applications actually do not need the
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* routes, since they usually specify the outgoing interface.
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*/
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rt = rtalloc1((struct sockaddr *)&mltaddr, 0, 0UL);
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if (rt != NULL) {
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/* XXX: only works in !SCOPEDROUTING case. */
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if (memcmp(&mltaddr.sin6_addr,
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&((struct sockaddr_in6 *)rt_key(rt))->sin6_addr,
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MLTMASK_LEN)) {
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RTFREE_LOCKED(rt);
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rt = NULL;
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}
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}
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if (rt == NULL) {
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error = rtrequest(RTM_ADD, (struct sockaddr *)&mltaddr,
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(struct sockaddr *)&ia->ia_addr,
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(struct sockaddr *)&mltmask, RTF_UP,
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(struct rtentry **)0);
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if (error)
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goto cleanup;
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} else
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RTFREE_LOCKED(rt);
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imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error, 0);
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if (imm == NULL) {
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nd6log((LOG_WARNING, "%s: addmulti failed for %s on %s "
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"(errno=%d)\n", __func__, ip6_sprintf(ip6buf,
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&mltaddr.sin6_addr), if_name(ifp), error));
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goto cleanup;
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}
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LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
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/*
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* Join node information group address.
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*/
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delay = 0;
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if ((flags & IN6_IFAUPDATE_DADDELAY)) {
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/*
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* The spec does not say anything about delay for this group,
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* but the same logic should apply.
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*/
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delay = arc4random() % (MAX_RTR_SOLICITATION_DELAY * hz);
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}
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if (in6_nigroup(ifp, NULL, -1, &mltaddr.sin6_addr) == 0) {
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/* XXX jinmei */
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imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error, delay);
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if (imm == NULL)
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nd6log((LOG_WARNING, "%s: addmulti failed for %s on %s "
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"(errno=%d)\n", __func__, ip6_sprintf(ip6buf,
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&mltaddr.sin6_addr), if_name(ifp), error));
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/* XXX not very fatal, go on... */
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else
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LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
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}
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/*
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* Join interface-local all-nodes address.
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* (ff01::1%ifN, and ff01::%ifN/32)
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*/
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mltaddr.sin6_addr = in6addr_nodelocal_allnodes;
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if ((error = in6_setscope(&mltaddr.sin6_addr, ifp, NULL)) != 0)
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goto cleanup; /* XXX: should not fail */
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/* XXX: again, do we really need the route? */
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rt = rtalloc1((struct sockaddr *)&mltaddr, 0, 0UL);
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if (rt != NULL) {
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if (memcmp(&mltaddr.sin6_addr,
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&((struct sockaddr_in6 *)rt_key(rt))->sin6_addr,
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MLTMASK_LEN)) {
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RTFREE_LOCKED(rt);
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rt = NULL;
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}
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}
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if (rt == NULL) {
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error = rtrequest(RTM_ADD, (struct sockaddr *)&mltaddr,
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(struct sockaddr *)&ia->ia_addr,
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(struct sockaddr *)&mltmask, RTF_UP,
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(struct rtentry **)0);
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if (error)
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goto cleanup;
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} else
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RTFREE_LOCKED(rt);
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imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error, 0);
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if (imm == NULL) {
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nd6log((LOG_WARNING, "%s: addmulti failed for %s on %s "
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"(errno=%d)\n", __func__, ip6_sprintf(ip6buf,
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&mltaddr.sin6_addr), if_name(ifp), error));
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goto cleanup;
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}
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LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
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#undef MLTMASK_LEN
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cleanup:
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return (error);
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}
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/*
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* Update parameters of an IPv6 interface address.
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* If necessary, a new entry is created and linked into address chains.
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@ -833,9 +996,7 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
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int error = 0, hostIsNew = 0, plen = -1;
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struct sockaddr_in6 dst6;
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struct in6_addrlifetime *lt;
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struct in6_multi_mship *imm;
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struct in6_multi *in6m_sol;
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struct rtentry *rt;
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int delay;
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char ip6buf[INET6_ADDRSTRLEN];
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@ -1083,172 +1244,12 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
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* not just go to unlink.
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*/
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/* Join necessary multicast groups */
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/* Join necessary multicast groups. */
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in6m_sol = NULL;
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if ((ifp->if_flags & IFF_MULTICAST) != 0) {
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struct sockaddr_in6 mltaddr, mltmask;
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struct in6_addr llsol;
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/* join solicited multicast addr for new host id */
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bzero(&llsol, sizeof(struct in6_addr));
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llsol.s6_addr32[0] = IPV6_ADDR_INT32_MLL;
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llsol.s6_addr32[1] = 0;
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llsol.s6_addr32[2] = htonl(1);
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llsol.s6_addr32[3] = ifra->ifra_addr.sin6_addr.s6_addr32[3];
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llsol.s6_addr8[12] = 0xff;
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if ((error = in6_setscope(&llsol, ifp, NULL)) != 0) {
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/* XXX: should not happen */
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log(LOG_ERR, "in6_update_ifa: "
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"in6_setscope failed\n");
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error = in6_update_ifa_join_mc(ifp, ifra, ia, flags, &in6m_sol);
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if (error)
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goto cleanup;
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}
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delay = 0;
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if ((flags & IN6_IFAUPDATE_DADDELAY)) {
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/*
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* We need a random delay for DAD on the address
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* being configured. It also means delaying
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* transmission of the corresponding MLD report to
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* avoid report collision.
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* [RFC 4861, Section 6.3.7]
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*/
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delay = arc4random() %
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(MAX_RTR_SOLICITATION_DELAY * hz);
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}
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imm = in6_joingroup(ifp, &llsol, &error, delay);
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if (imm == NULL) {
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nd6log((LOG_WARNING,
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"in6_update_ifa: addmulti failed for "
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"%s on %s (errno=%d)\n",
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ip6_sprintf(ip6buf, &llsol), if_name(ifp),
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error));
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goto cleanup;
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}
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LIST_INSERT_HEAD(&ia->ia6_memberships,
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imm, i6mm_chain);
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in6m_sol = imm->i6mm_maddr;
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bzero(&mltmask, sizeof(mltmask));
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mltmask.sin6_len = sizeof(struct sockaddr_in6);
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mltmask.sin6_family = AF_INET6;
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mltmask.sin6_addr = in6mask32;
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#define MLTMASK_LEN 4 /* mltmask's masklen (=32bit=4octet) */
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/*
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* join link-local all-nodes address
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*/
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bzero(&mltaddr, sizeof(mltaddr));
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mltaddr.sin6_len = sizeof(struct sockaddr_in6);
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mltaddr.sin6_family = AF_INET6;
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mltaddr.sin6_addr = in6addr_linklocal_allnodes;
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if ((error = in6_setscope(&mltaddr.sin6_addr, ifp, NULL)) !=
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0)
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goto cleanup; /* XXX: should not fail */
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/*
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* XXX: do we really need this automatic routes?
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* We should probably reconsider this stuff. Most applications
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* actually do not need the routes, since they usually specify
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* the outgoing interface.
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*/
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rt = rtalloc1((struct sockaddr *)&mltaddr, 0, 0UL);
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if (rt) {
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/* XXX: only works in !SCOPEDROUTING case. */
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if (memcmp(&mltaddr.sin6_addr,
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&((struct sockaddr_in6 *)rt_key(rt))->sin6_addr,
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MLTMASK_LEN)) {
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RTFREE_LOCKED(rt);
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rt = NULL;
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}
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}
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if (!rt) {
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error = rtrequest(RTM_ADD, (struct sockaddr *)&mltaddr,
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(struct sockaddr *)&ia->ia_addr,
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(struct sockaddr *)&mltmask, RTF_UP,
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(struct rtentry **)0);
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if (error)
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goto cleanup;
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} else {
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RTFREE_LOCKED(rt);
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}
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imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error, 0);
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if (!imm) {
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nd6log((LOG_WARNING,
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"in6_update_ifa: addmulti failed for "
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"%s on %s (errno=%d)\n",
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ip6_sprintf(ip6buf, &mltaddr.sin6_addr),
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if_name(ifp), error));
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goto cleanup;
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}
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LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
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/*
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* join node information group address
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*/
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delay = 0;
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if ((flags & IN6_IFAUPDATE_DADDELAY)) {
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/*
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* The spec doesn't say anything about delay for this
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* group, but the same logic should apply.
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*/
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delay = arc4random() %
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(MAX_RTR_SOLICITATION_DELAY * hz);
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}
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if (in6_nigroup(ifp, NULL, -1, &mltaddr.sin6_addr) == 0) {
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imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error,
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delay); /* XXX jinmei */
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if (!imm) {
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nd6log((LOG_WARNING, "in6_update_ifa: "
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"addmulti failed for %s on %s "
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"(errno=%d)\n",
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ip6_sprintf(ip6buf, &mltaddr.sin6_addr),
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if_name(ifp), error));
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/* XXX not very fatal, go on... */
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} else {
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LIST_INSERT_HEAD(&ia->ia6_memberships,
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imm, i6mm_chain);
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}
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}
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/*
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* join interface-local all-nodes address.
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* (ff01::1%ifN, and ff01::%ifN/32)
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*/
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mltaddr.sin6_addr = in6addr_nodelocal_allnodes;
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if ((error = in6_setscope(&mltaddr.sin6_addr, ifp, NULL))
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!= 0)
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goto cleanup; /* XXX: should not fail */
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/* XXX: again, do we really need the route? */
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rt = rtalloc1((struct sockaddr *)&mltaddr, 0, 0UL);
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if (rt) {
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if (memcmp(&mltaddr.sin6_addr,
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&((struct sockaddr_in6 *)rt_key(rt))->sin6_addr,
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MLTMASK_LEN)) {
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RTFREE_LOCKED(rt);
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rt = NULL;
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}
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}
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if (!rt) {
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error = rtrequest(RTM_ADD, (struct sockaddr *)&mltaddr,
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(struct sockaddr *)&ia->ia_addr,
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(struct sockaddr *)&mltmask, RTF_UP,
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(struct rtentry **)0);
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if (error)
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goto cleanup;
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} else
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RTFREE_LOCKED(rt);
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imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error, 0);
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if (!imm) {
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nd6log((LOG_WARNING, "in6_update_ifa: "
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"addmulti failed for %s on %s "
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"(errno=%d)\n",
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ip6_sprintf(ip6buf, &mltaddr.sin6_addr),
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if_name(ifp), error));
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goto cleanup;
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}
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LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
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#undef MLTMASK_LEN
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}
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/*
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@ -1312,15 +1313,143 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
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return error;
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}
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/*
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* Leave multicast groups. Factored out from in6_purgeaddr().
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* This entire work should only be done once, for the default FIB.
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*/
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static int
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in6_purgeaddr_mc(struct ifnet *ifp, struct in6_ifaddr *ia, struct ifaddr *ifa0)
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{
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struct sockaddr_in6 mltaddr, mltmask;
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struct in6_multi_mship *imm;
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struct rtentry *rt;
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int error;
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/*
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* Leave from multicast groups we have joined for the interface.
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*/
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while ((imm = LIST_FIRST(&ia->ia6_memberships)) != NULL) {
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LIST_REMOVE(imm, i6mm_chain);
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in6_leavegroup(imm);
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}
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/*
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* Remove the link-local all-nodes address.
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*/
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bzero(&mltmask, sizeof(mltmask));
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mltmask.sin6_len = sizeof(struct sockaddr_in6);
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mltmask.sin6_family = AF_INET6;
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mltmask.sin6_addr = in6mask32;
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bzero(&mltaddr, sizeof(mltaddr));
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mltaddr.sin6_len = sizeof(struct sockaddr_in6);
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mltaddr.sin6_family = AF_INET6;
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mltaddr.sin6_addr = in6addr_linklocal_allnodes;
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if ((error = in6_setscope(&mltaddr.sin6_addr, ifp, NULL)) != 0)
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return (error);
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rt = rtalloc1((struct sockaddr *)&mltaddr, 0, 0UL);
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if (rt != NULL && rt->rt_gateway != NULL &&
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(memcmp(&satosin6(rt->rt_gateway)->sin6_addr,
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&ia->ia_addr.sin6_addr,
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sizeof(ia->ia_addr.sin6_addr)) == 0)) {
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/*
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* If no more IPv6 address exists on this interface then
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* remove the multicast address route.
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*/
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if (ifa0 == NULL) {
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memcpy(&mltaddr.sin6_addr, &satosin6(rt_key(rt))->sin6_addr,
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sizeof(mltaddr.sin6_addr));
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RTFREE_LOCKED(rt);
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error = rtrequest(RTM_DELETE,
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(struct sockaddr *)&mltaddr,
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(struct sockaddr *)&ia->ia_addr,
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(struct sockaddr *)&mltmask, RTF_UP,
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(struct rtentry **)0);
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if (error)
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log(LOG_INFO, "%s: link-local all-nodes "
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"multicast address deletion error\n",
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__func__);
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} else {
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/*
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* Replace the gateway of the route.
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*/
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struct sockaddr_in6 sa;
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bzero(&sa, sizeof(sa));
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sa.sin6_len = sizeof(struct sockaddr_in6);
|
||||
sa.sin6_family = AF_INET6;
|
||||
memcpy(&sa.sin6_addr, &satosin6(ifa0->ifa_addr)->sin6_addr,
|
||||
sizeof(sa.sin6_addr));
|
||||
in6_setscope(&sa.sin6_addr, ifa0->ifa_ifp, NULL);
|
||||
memcpy(rt->rt_gateway, &sa, sizeof(sa));
|
||||
RTFREE_LOCKED(rt);
|
||||
}
|
||||
} else {
|
||||
if (rt != NULL)
|
||||
RTFREE_LOCKED(rt);
|
||||
}
|
||||
|
||||
/*
|
||||
* Remove the node-local all-nodes address.
|
||||
*/
|
||||
mltaddr.sin6_addr = in6addr_nodelocal_allnodes;
|
||||
if ((error = in6_setscope(&mltaddr.sin6_addr, ifp, NULL)) != 0)
|
||||
return (error);
|
||||
|
||||
rt = rtalloc1((struct sockaddr *)&mltaddr, 0, 0UL);
|
||||
if (rt != NULL && rt->rt_gateway != NULL &&
|
||||
(memcmp(&satosin6(rt->rt_gateway)->sin6_addr,
|
||||
&ia->ia_addr.sin6_addr,
|
||||
sizeof(ia->ia_addr.sin6_addr)) == 0)) {
|
||||
/*
|
||||
* If no more IPv6 address exists on this interface then
|
||||
* remove the multicast address route.
|
||||
*/
|
||||
if (ifa0 == NULL) {
|
||||
memcpy(&mltaddr.sin6_addr, &satosin6(rt_key(rt))->sin6_addr,
|
||||
sizeof(mltaddr.sin6_addr));
|
||||
|
||||
RTFREE_LOCKED(rt);
|
||||
error = rtrequest(RTM_DELETE,
|
||||
(struct sockaddr *)&mltaddr,
|
||||
(struct sockaddr *)&ia->ia_addr,
|
||||
(struct sockaddr *)&mltmask, RTF_UP,
|
||||
(struct rtentry **)0);
|
||||
if (error)
|
||||
log(LOG_INFO, "%s: node-local all-nodes"
|
||||
"multicast address deletion error\n",
|
||||
__func__);
|
||||
} else {
|
||||
/*
|
||||
* Replace the gateway of the route.
|
||||
*/
|
||||
struct sockaddr_in6 sa;
|
||||
|
||||
bzero(&sa, sizeof(sa));
|
||||
sa.sin6_len = sizeof(struct sockaddr_in6);
|
||||
sa.sin6_family = AF_INET6;
|
||||
memcpy(&sa.sin6_addr, &satosin6(ifa0->ifa_addr)->sin6_addr,
|
||||
sizeof(sa.sin6_addr));
|
||||
in6_setscope(&sa.sin6_addr, ifa0->ifa_ifp, NULL);
|
||||
memcpy(rt->rt_gateway, &sa, sizeof(sa));
|
||||
RTFREE_LOCKED(rt);
|
||||
}
|
||||
} else {
|
||||
if (rt != NULL)
|
||||
RTFREE_LOCKED(rt);
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
in6_purgeaddr(struct ifaddr *ifa)
|
||||
{
|
||||
struct ifnet *ifp = ifa->ifa_ifp;
|
||||
struct in6_ifaddr *ia = (struct in6_ifaddr *) ifa;
|
||||
struct in6_multi_mship *imm;
|
||||
struct sockaddr_in6 mltaddr, mltmask;
|
||||
int plen, error;
|
||||
struct rtentry *rt;
|
||||
struct ifaddr *ifa0;
|
||||
|
||||
if (ifa->ifa_carp)
|
||||
@ -1362,121 +1491,9 @@ in6_purgeaddr(struct ifaddr *ifa)
|
||||
|
||||
in6_ifremloop(ifa);
|
||||
|
||||
/*
|
||||
* leave from multicast groups we have joined for the interface
|
||||
*/
|
||||
while ((imm = LIST_FIRST(&ia->ia6_memberships)) != NULL) {
|
||||
LIST_REMOVE(imm, i6mm_chain);
|
||||
in6_leavegroup(imm);
|
||||
}
|
||||
/* Leave multicast groups. */
|
||||
error = in6_purgeaddr_mc(ifp, ia, ifa0);
|
||||
|
||||
/*
|
||||
* remove the link-local all-nodes address
|
||||
*/
|
||||
bzero(&mltmask, sizeof(mltmask));
|
||||
mltmask.sin6_len = sizeof(struct sockaddr_in6);
|
||||
mltmask.sin6_family = AF_INET6;
|
||||
mltmask.sin6_addr = in6mask32;
|
||||
|
||||
bzero(&mltaddr, sizeof(mltaddr));
|
||||
mltaddr.sin6_len = sizeof(struct sockaddr_in6);
|
||||
mltaddr.sin6_family = AF_INET6;
|
||||
mltaddr.sin6_addr = in6addr_linklocal_allnodes;
|
||||
|
||||
if ((error = in6_setscope(&mltaddr.sin6_addr, ifp, NULL)) != 0)
|
||||
goto cleanup;
|
||||
|
||||
rt = rtalloc1((struct sockaddr *)&mltaddr, 0, 0UL);
|
||||
if (rt != NULL && rt->rt_gateway != NULL &&
|
||||
(memcmp(&satosin6(rt->rt_gateway)->sin6_addr,
|
||||
&ia->ia_addr.sin6_addr,
|
||||
sizeof(ia->ia_addr.sin6_addr)) == 0)) {
|
||||
/*
|
||||
* if no more IPv6 address exists on this interface
|
||||
* then remove the multicast address route
|
||||
*/
|
||||
if (ifa0 == NULL) {
|
||||
memcpy(&mltaddr.sin6_addr, &satosin6(rt_key(rt))->sin6_addr,
|
||||
sizeof(mltaddr.sin6_addr));
|
||||
RTFREE_LOCKED(rt);
|
||||
error = rtrequest(RTM_DELETE, (struct sockaddr *)&mltaddr,
|
||||
(struct sockaddr *)&ia->ia_addr,
|
||||
(struct sockaddr *)&mltmask, RTF_UP,
|
||||
(struct rtentry **)0);
|
||||
if (error)
|
||||
log(LOG_INFO, "in6_purgeaddr: link-local all-nodes"
|
||||
"multicast address deletion error\n");
|
||||
} else {
|
||||
/*
|
||||
* replace the gateway of the route
|
||||
*/
|
||||
struct sockaddr_in6 sa;
|
||||
|
||||
bzero(&sa, sizeof(sa));
|
||||
sa.sin6_len = sizeof(struct sockaddr_in6);
|
||||
sa.sin6_family = AF_INET6;
|
||||
memcpy(&sa.sin6_addr, &satosin6(ifa0->ifa_addr)->sin6_addr,
|
||||
sizeof(sa.sin6_addr));
|
||||
in6_setscope(&sa.sin6_addr, ifa0->ifa_ifp, NULL);
|
||||
memcpy(rt->rt_gateway, &sa, sizeof(sa));
|
||||
RTFREE_LOCKED(rt);
|
||||
}
|
||||
} else {
|
||||
if (rt != NULL)
|
||||
RTFREE_LOCKED(rt);
|
||||
}
|
||||
|
||||
/*
|
||||
* remove the node-local all-nodes address
|
||||
*/
|
||||
mltaddr.sin6_addr = in6addr_nodelocal_allnodes;
|
||||
if ((error = in6_setscope(&mltaddr.sin6_addr, ifp, NULL)) !=
|
||||
0)
|
||||
goto cleanup;
|
||||
|
||||
rt = rtalloc1((struct sockaddr *)&mltaddr, 0, 0UL);
|
||||
if (rt != NULL && rt->rt_gateway != NULL &&
|
||||
(memcmp(&satosin6(rt->rt_gateway)->sin6_addr,
|
||||
&ia->ia_addr.sin6_addr,
|
||||
sizeof(ia->ia_addr.sin6_addr)) == 0)) {
|
||||
/*
|
||||
* if no more IPv6 address exists on this interface
|
||||
* then remove the multicast address route
|
||||
*/
|
||||
if (ifa0 == NULL) {
|
||||
memcpy(&mltaddr.sin6_addr, &satosin6(rt_key(rt))->sin6_addr,
|
||||
sizeof(mltaddr.sin6_addr));
|
||||
|
||||
RTFREE_LOCKED(rt);
|
||||
error = rtrequest(RTM_DELETE, (struct sockaddr *)&mltaddr,
|
||||
(struct sockaddr *)&ia->ia_addr,
|
||||
(struct sockaddr *)&mltmask, RTF_UP,
|
||||
(struct rtentry **)0);
|
||||
|
||||
if (error)
|
||||
log(LOG_INFO, "in6_purgeaddr: node-local all-nodes"
|
||||
"multicast address deletion error\n");
|
||||
} else {
|
||||
/*
|
||||
* replace the gateway of the route
|
||||
*/
|
||||
struct sockaddr_in6 sa;
|
||||
|
||||
bzero(&sa, sizeof(sa));
|
||||
sa.sin6_len = sizeof(struct sockaddr_in6);
|
||||
sa.sin6_family = AF_INET6;
|
||||
memcpy(&sa.sin6_addr, &satosin6(ifa0->ifa_addr)->sin6_addr,
|
||||
sizeof(sa.sin6_addr));
|
||||
in6_setscope(&sa.sin6_addr, ifa0->ifa_ifp, NULL);
|
||||
memcpy(rt->rt_gateway, &sa, sizeof(sa));
|
||||
RTFREE_LOCKED(rt);
|
||||
}
|
||||
} else {
|
||||
if (rt != NULL)
|
||||
RTFREE_LOCKED(rt);
|
||||
}
|
||||
|
||||
cleanup:
|
||||
if (ifa0 != NULL)
|
||||
ifa_free(ifa0);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user