addrconf.c (fae6ec69c84d71b1d5bda9ede1a262c1681684aa) addrconf.c (0d51aa80a9b1db43920c0770c3bb842dd823c005)
1/*
2 * IPv6 Address [auto]configuration
3 * Linux INET6 implementation
4 *
5 * Authors:
6 * Pedro Roque <roque@di.fc.ul.pt>
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 *

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690 struct in6_addr prefix;
691 struct rt6_info *rt;
692
693 ipv6_addr_prefix(&prefix, &ifp->addr, ifp->prefix_len);
694 rt = rt6_lookup(&prefix, NULL, ifp->idev->dev->ifindex, 1);
695
696 if (rt && ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0)) {
697 if (onlink == 0) {
1/*
2 * IPv6 Address [auto]configuration
3 * Linux INET6 implementation
4 *
5 * Authors:
6 * Pedro Roque <roque@di.fc.ul.pt>
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 *

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690 struct in6_addr prefix;
691 struct rt6_info *rt;
692
693 ipv6_addr_prefix(&prefix, &ifp->addr, ifp->prefix_len);
694 rt = rt6_lookup(&prefix, NULL, ifp->idev->dev->ifindex, 1);
695
696 if (rt && ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0)) {
697 if (onlink == 0) {
698 ip6_del_rt(rt, NULL, NULL);
698 ip6_del_rt(rt, NULL, NULL, NULL);
699 rt = NULL;
700 } else if (!(rt->rt6i_flags & RTF_EXPIRES)) {
701 rt->rt6i_expires = expires;
702 rt->rt6i_flags |= RTF_EXPIRES;
703 }
704 }
705 dst_release(&rt->u.dst);
706 }

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1335
1336 /* Prevent useless cloning on PtP SIT.
1337 This thing is done here expecting that the whole
1338 class of non-broadcast devices need not cloning.
1339 */
1340 if (dev->type == ARPHRD_SIT && (dev->flags&IFF_POINTOPOINT))
1341 rtmsg.rtmsg_flags |= RTF_NONEXTHOP;
1342
699 rt = NULL;
700 } else if (!(rt->rt6i_flags & RTF_EXPIRES)) {
701 rt->rt6i_expires = expires;
702 rt->rt6i_flags |= RTF_EXPIRES;
703 }
704 }
705 dst_release(&rt->u.dst);
706 }

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1335
1336 /* Prevent useless cloning on PtP SIT.
1337 This thing is done here expecting that the whole
1338 class of non-broadcast devices need not cloning.
1339 */
1340 if (dev->type == ARPHRD_SIT && (dev->flags&IFF_POINTOPOINT))
1341 rtmsg.rtmsg_flags |= RTF_NONEXTHOP;
1342
1343 ip6_route_add(&rtmsg, NULL, NULL);
1343 ip6_route_add(&rtmsg, NULL, NULL, NULL);
1344}
1345
1346/* Create "default" multicast route to the interface */
1347
1348static void addrconf_add_mroute(struct net_device *dev)
1349{
1350 struct in6_rtmsg rtmsg;
1351
1352 memset(&rtmsg, 0, sizeof(rtmsg));
1353 ipv6_addr_set(&rtmsg.rtmsg_dst,
1354 htonl(0xFF000000), 0, 0, 0);
1355 rtmsg.rtmsg_dst_len = 8;
1356 rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
1357 rtmsg.rtmsg_ifindex = dev->ifindex;
1358 rtmsg.rtmsg_flags = RTF_UP;
1359 rtmsg.rtmsg_type = RTMSG_NEWROUTE;
1344}
1345
1346/* Create "default" multicast route to the interface */
1347
1348static void addrconf_add_mroute(struct net_device *dev)
1349{
1350 struct in6_rtmsg rtmsg;
1351
1352 memset(&rtmsg, 0, sizeof(rtmsg));
1353 ipv6_addr_set(&rtmsg.rtmsg_dst,
1354 htonl(0xFF000000), 0, 0, 0);
1355 rtmsg.rtmsg_dst_len = 8;
1356 rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
1357 rtmsg.rtmsg_ifindex = dev->ifindex;
1358 rtmsg.rtmsg_flags = RTF_UP;
1359 rtmsg.rtmsg_type = RTMSG_NEWROUTE;
1360 ip6_route_add(&rtmsg, NULL, NULL);
1360 ip6_route_add(&rtmsg, NULL, NULL, NULL);
1361}
1362
1363static void sit_route_add(struct net_device *dev)
1364{
1365 struct in6_rtmsg rtmsg;
1366
1367 memset(&rtmsg, 0, sizeof(rtmsg));
1368
1369 rtmsg.rtmsg_type = RTMSG_NEWROUTE;
1370 rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
1371
1372 /* prefix length - 96 bits "::d.d.d.d" */
1373 rtmsg.rtmsg_dst_len = 96;
1374 rtmsg.rtmsg_flags = RTF_UP|RTF_NONEXTHOP;
1375 rtmsg.rtmsg_ifindex = dev->ifindex;
1376
1361}
1362
1363static void sit_route_add(struct net_device *dev)
1364{
1365 struct in6_rtmsg rtmsg;
1366
1367 memset(&rtmsg, 0, sizeof(rtmsg));
1368
1369 rtmsg.rtmsg_type = RTMSG_NEWROUTE;
1370 rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
1371
1372 /* prefix length - 96 bits "::d.d.d.d" */
1373 rtmsg.rtmsg_dst_len = 96;
1374 rtmsg.rtmsg_flags = RTF_UP|RTF_NONEXTHOP;
1375 rtmsg.rtmsg_ifindex = dev->ifindex;
1376
1377 ip6_route_add(&rtmsg, NULL, NULL);
1377 ip6_route_add(&rtmsg, NULL, NULL, NULL);
1378}
1379
1380static void addrconf_add_lroute(struct net_device *dev)
1381{
1382 struct in6_addr addr;
1383
1384 ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0);
1385 addrconf_prefix_route(&addr, 64, dev, 0, 0);

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1462
1463 if (pinfo->onlink) {
1464 struct rt6_info *rt;
1465 rt = rt6_lookup(&pinfo->prefix, NULL, dev->ifindex, 1);
1466
1467 if (rt && ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0)) {
1468 if (rt->rt6i_flags&RTF_EXPIRES) {
1469 if (valid_lft == 0) {
1378}
1379
1380static void addrconf_add_lroute(struct net_device *dev)
1381{
1382 struct in6_addr addr;
1383
1384 ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0);
1385 addrconf_prefix_route(&addr, 64, dev, 0, 0);

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1462
1463 if (pinfo->onlink) {
1464 struct rt6_info *rt;
1465 rt = rt6_lookup(&pinfo->prefix, NULL, dev->ifindex, 1);
1466
1467 if (rt && ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0)) {
1468 if (rt->rt6i_flags&RTF_EXPIRES) {
1469 if (valid_lft == 0) {
1470 ip6_del_rt(rt, NULL, NULL);
1470 ip6_del_rt(rt, NULL, NULL, NULL);
1471 rt = NULL;
1472 } else {
1473 rt->rt6i_expires = rt_expires;
1474 }
1475 }
1476 } else if (valid_lft) {
1477 addrconf_prefix_route(&pinfo->prefix, pinfo->prefix_len,
1478 dev, rt_expires, RTF_ADDRCONF|RTF_EXPIRES|RTF_PREFIX_RT);

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3089
3090static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
3091{
3092 inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);
3093
3094 switch (event) {
3095 case RTM_NEWADDR:
3096 dst_hold(&ifp->rt->u.dst);
1471 rt = NULL;
1472 } else {
1473 rt->rt6i_expires = rt_expires;
1474 }
1475 }
1476 } else if (valid_lft) {
1477 addrconf_prefix_route(&pinfo->prefix, pinfo->prefix_len,
1478 dev, rt_expires, RTF_ADDRCONF|RTF_EXPIRES|RTF_PREFIX_RT);

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3089
3090static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
3091{
3092 inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);
3093
3094 switch (event) {
3095 case RTM_NEWADDR:
3096 dst_hold(&ifp->rt->u.dst);
3097 if (ip6_ins_rt(ifp->rt, NULL, NULL))
3097 if (ip6_ins_rt(ifp->rt, NULL, NULL, NULL))
3098 dst_release(&ifp->rt->u.dst);
3099 if (ifp->idev->cnf.forwarding)
3100 addrconf_join_anycast(ifp);
3101 break;
3102 case RTM_DELADDR:
3103 if (ifp->idev->cnf.forwarding)
3104 addrconf_leave_anycast(ifp);
3105 addrconf_leave_solict(ifp->idev, &ifp->addr);
3106 dst_hold(&ifp->rt->u.dst);
3098 dst_release(&ifp->rt->u.dst);
3099 if (ifp->idev->cnf.forwarding)
3100 addrconf_join_anycast(ifp);
3101 break;
3102 case RTM_DELADDR:
3103 if (ifp->idev->cnf.forwarding)
3104 addrconf_leave_anycast(ifp);
3105 addrconf_leave_solict(ifp->idev, &ifp->addr);
3106 dst_hold(&ifp->rt->u.dst);
3107 if (ip6_del_rt(ifp->rt, NULL, NULL))
3107 if (ip6_del_rt(ifp->rt, NULL, NULL, NULL))
3108 dst_free(&ifp->rt->u.dst);
3109 else
3110 dst_release(&ifp->rt->u.dst);
3111 break;
3112 }
3113}
3114
3115static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)

--- 498 unchanged lines hidden --- 		3108 dst_free(&ifp->rt->u.dst);
3109 else
3110 dst_release(&ifp->rt->u.dst);
3111 break;
3112 }
3113}
3114
3115static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)

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