addrconf.c (5f0e5afa0de4522abb3ea7d1369039b94e740ec5) addrconf.c (8965779d2c0e6ab246c82a405236b1fb2adae6b2)
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 *

--- 239 unchanged lines hidden (view full) ---

248const struct in6_addr in6addr_sitelocal_allrouters = IN6ADDR_SITELOCAL_ALLROUTERS_INIT;
249
250/* Check if a valid qdisc is available */
251static inline bool addrconf_qdisc_ok(const struct net_device *dev)
252{
253 return !qdisc_tx_is_noop(dev);
254}
255
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 *

--- 239 unchanged lines hidden (view full) ---

248const struct in6_addr in6addr_sitelocal_allrouters = IN6ADDR_SITELOCAL_ALLROUTERS_INIT;
249
250/* Check if a valid qdisc is available */
251static inline bool addrconf_qdisc_ok(const struct net_device *dev)
252{
253 return !qdisc_tx_is_noop(dev);
254}
255
256static void addrconf_del_timer(struct inet6_ifaddr *ifp)
256static void addrconf_del_rs_timer(struct inet6_dev *idev)
257{
257{
258 if (del_timer(&ifp->timer))
258 if (del_timer(&idev->rs_timer))
259 __in6_dev_put(idev);
260}
261
262static void addrconf_del_dad_timer(struct inet6_ifaddr *ifp)
263{
264 if (del_timer(&ifp->dad_timer))
259 __in6_ifa_put(ifp);
260}
261
265 __in6_ifa_put(ifp);
266}
267
262enum addrconf_timer_t {
263 AC_NONE,
264 AC_DAD,
265 AC_RS,
266};
268static void addrconf_mod_rs_timer(struct inet6_dev *idev,
269 unsigned long when)
270{
271 if (!timer_pending(&idev->rs_timer))
272 in6_dev_hold(idev);
273 mod_timer(&idev->rs_timer, jiffies + when);
274}
267
275
268static void addrconf_mod_timer(struct inet6_ifaddr *ifp,
269 enum addrconf_timer_t what,
270 unsigned long when)
276static void addrconf_mod_dad_timer(struct inet6_ifaddr *ifp,
277 unsigned long when)
271{
278{
272 if (!del_timer(&ifp->timer))
279 if (!timer_pending(&ifp->dad_timer))
273 in6_ifa_hold(ifp);
280 in6_ifa_hold(ifp);
274
275 switch (what) {
276 case AC_DAD:
277 ifp->timer.function = addrconf_dad_timer;
278 break;
279 case AC_RS:
280 ifp->timer.function = addrconf_rs_timer;
281 break;
282 default:
283 break;
284 }
285 ifp->timer.expires = jiffies + when;
286 add_timer(&ifp->timer);
281 mod_timer(&ifp->dad_timer, jiffies + when);
287}
288
289static int snmp6_alloc_dev(struct inet6_dev *idev)
290{
291 if (snmp_mib_init((void __percpu **)idev->stats.ipv6,
292 sizeof(struct ipstats_mib),
293 __alignof__(struct ipstats_mib)) < 0)
294 goto err_ip;

--- 26 unchanged lines hidden (view full) ---

321/* Nobody refers to this device, we may destroy it. */
322
323void in6_dev_finish_destroy(struct inet6_dev *idev)
324{
325 struct net_device *dev = idev->dev;
326
327 WARN_ON(!list_empty(&idev->addr_list));
328 WARN_ON(idev->mc_list != NULL);
282}
283
284static int snmp6_alloc_dev(struct inet6_dev *idev)
285{
286 if (snmp_mib_init((void __percpu **)idev->stats.ipv6,
287 sizeof(struct ipstats_mib),
288 __alignof__(struct ipstats_mib)) < 0)
289 goto err_ip;

--- 26 unchanged lines hidden (view full) ---

316/* Nobody refers to this device, we may destroy it. */
317
318void in6_dev_finish_destroy(struct inet6_dev *idev)
319{
320 struct net_device *dev = idev->dev;
321
322 WARN_ON(!list_empty(&idev->addr_list));
323 WARN_ON(idev->mc_list != NULL);
324 WARN_ON(timer_pending(&idev->rs_timer));
329
330#ifdef NET_REFCNT_DEBUG
331 pr_debug("%s: %s\n", __func__, dev ? dev->name : "NIL");
332#endif
333 dev_put(dev);
334 if (!idev->dead) {
335 pr_warn("Freeing alive inet6 device %p\n", idev);
336 return;

--- 15 unchanged lines hidden (view full) ---

352 ndev = kzalloc(sizeof(struct inet6_dev), GFP_KERNEL);
353
354 if (ndev == NULL)
355 return NULL;
356
357 rwlock_init(&ndev->lock);
358 ndev->dev = dev;
359 INIT_LIST_HEAD(&ndev->addr_list);
325
326#ifdef NET_REFCNT_DEBUG
327 pr_debug("%s: %s\n", __func__, dev ? dev->name : "NIL");
328#endif
329 dev_put(dev);
330 if (!idev->dead) {
331 pr_warn("Freeing alive inet6 device %p\n", idev);
332 return;

--- 15 unchanged lines hidden (view full) ---

348 ndev = kzalloc(sizeof(struct inet6_dev), GFP_KERNEL);
349
350 if (ndev == NULL)
351 return NULL;
352
353 rwlock_init(&ndev->lock);
354 ndev->dev = dev;
355 INIT_LIST_HEAD(&ndev->addr_list);
360
356 setup_timer(&ndev->rs_timer, addrconf_rs_timer,
357 (unsigned long)ndev);
361 memcpy(&ndev->cnf, dev_net(dev)->ipv6.devconf_dflt, sizeof(ndev->cnf));
362 ndev->cnf.mtu6 = dev->mtu;
363 ndev->cnf.sysctl = NULL;
364 ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl);
365 if (ndev->nd_parms == NULL) {
366 kfree(ndev);
367 return NULL;
368 }

--- 402 unchanged lines hidden (view full) ---

771 WARN_ON(!hlist_unhashed(&ifp->addr_lst));
772
773#ifdef NET_REFCNT_DEBUG
774 pr_debug("%s\n", __func__);
775#endif
776
777 in6_dev_put(ifp->idev);
778
358 memcpy(&ndev->cnf, dev_net(dev)->ipv6.devconf_dflt, sizeof(ndev->cnf));
359 ndev->cnf.mtu6 = dev->mtu;
360 ndev->cnf.sysctl = NULL;
361 ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl);
362 if (ndev->nd_parms == NULL) {
363 kfree(ndev);
364 return NULL;
365 }

--- 402 unchanged lines hidden (view full) ---

768 WARN_ON(!hlist_unhashed(&ifp->addr_lst));
769
770#ifdef NET_REFCNT_DEBUG
771 pr_debug("%s\n", __func__);
772#endif
773
774 in6_dev_put(ifp->idev);
775
779 if (del_timer(&ifp->timer))
776 if (del_timer(&ifp->dad_timer))
780 pr_notice("Timer is still running, when freeing ifa=%p\n", ifp);
781
782 if (ifp->state != INET6_IFADDR_STATE_DEAD) {
783 pr_warn("Freeing alive inet6 address %p\n", ifp);
784 return;
785 }
786 ip6_rt_put(ifp->rt);
787

--- 76 unchanged lines hidden (view full) ---

864 err = PTR_ERR(rt);
865 goto out;
866 }
867
868 ifa->addr = *addr;
869
870 spin_lock_init(&ifa->lock);
871 spin_lock_init(&ifa->state_lock);
777 pr_notice("Timer is still running, when freeing ifa=%p\n", ifp);
778
779 if (ifp->state != INET6_IFADDR_STATE_DEAD) {
780 pr_warn("Freeing alive inet6 address %p\n", ifp);
781 return;
782 }
783 ip6_rt_put(ifp->rt);
784

--- 76 unchanged lines hidden (view full) ---

861 err = PTR_ERR(rt);
862 goto out;
863 }
864
865 ifa->addr = *addr;
866
867 spin_lock_init(&ifa->lock);
868 spin_lock_init(&ifa->state_lock);
872 init_timer(&ifa->timer);
869 setup_timer(&ifa->dad_timer, addrconf_dad_timer,
870 (unsigned long)ifa);
873 INIT_HLIST_NODE(&ifa->addr_lst);
871 INIT_HLIST_NODE(&ifa->addr_lst);
874 ifa->timer.data = (unsigned long) ifa;
875 ifa->scope = scope;
876 ifa->prefix_len = pfxlen;
877 ifa->flags = flags | IFA_F_TENTATIVE;
878 ifa->cstamp = ifa->tstamp = jiffies;
879 ifa->tokenized = false;
880
881 ifa->rt = rt;
882

--- 106 unchanged lines hidden (view full) ---

989 expires = ifa->tstamp + lifetime * HZ;
990 spin_unlock(&ifa->lock);
991 }
992 }
993 }
994 }
995 write_unlock_bh(&idev->lock);
996
872 ifa->scope = scope;
873 ifa->prefix_len = pfxlen;
874 ifa->flags = flags | IFA_F_TENTATIVE;
875 ifa->cstamp = ifa->tstamp = jiffies;
876 ifa->tokenized = false;
877
878 ifa->rt = rt;
879

--- 106 unchanged lines hidden (view full) ---

986 expires = ifa->tstamp + lifetime * HZ;
987 spin_unlock(&ifa->lock);
988 }
989 }
990 }
991 }
992 write_unlock_bh(&idev->lock);
993
997 addrconf_del_timer(ifp);
994 addrconf_del_dad_timer(ifp);
998
999 ipv6_ifa_notify(RTM_DELADDR, ifp);
1000
1001 inet6addr_notifier_call_chain(NETDEV_DOWN, ifp);
1002
1003 /*
1004 * Purge or update corresponding prefix
1005 *

--- 115 unchanged lines hidden (view full) ---

1121
1122 addr_flags = IFA_F_TEMPORARY;
1123 /* set in addrconf_prefix_rcv() */
1124 if (ifp->flags & IFA_F_OPTIMISTIC)
1125 addr_flags |= IFA_F_OPTIMISTIC;
1126
1127 ift = !max_addresses ||
1128 ipv6_count_addresses(idev) < max_addresses ?
995
996 ipv6_ifa_notify(RTM_DELADDR, ifp);
997
998 inet6addr_notifier_call_chain(NETDEV_DOWN, ifp);
999
1000 /*
1001 * Purge or update corresponding prefix
1002 *

--- 115 unchanged lines hidden (view full) ---

1118
1119 addr_flags = IFA_F_TEMPORARY;
1120 /* set in addrconf_prefix_rcv() */
1121 if (ifp->flags & IFA_F_OPTIMISTIC)
1122 addr_flags |= IFA_F_OPTIMISTIC;
1123
1124 ift = !max_addresses ||
1125 ipv6_count_addresses(idev) < max_addresses ?
1129 ipv6_add_addr(idev, &addr, tmp_plen,
1130 ipv6_addr_type(&addr)&IPV6_ADDR_SCOPE_MASK,
1126 ipv6_add_addr(idev, &addr, tmp_plen, ipv6_addr_scope(&addr),
1131 addr_flags) : NULL;
1132 if (IS_ERR_OR_NULL(ift)) {
1133 in6_ifa_put(ifp);
1134 in6_dev_put(idev);
1135 pr_info("%s: retry temporary address regeneration\n", __func__);
1136 tmpaddr = &addr;
1137 write_lock(&idev->lock);
1138 goto retry;

--- 304 unchanged lines hidden (view full) ---

1443 return -EADDRNOTAVAIL;
1444
1445 *saddr = hiscore->ifa->addr;
1446 in6_ifa_put(hiscore->ifa);
1447 return 0;
1448}
1449EXPORT_SYMBOL(ipv6_dev_get_saddr);
1450
1127 addr_flags) : NULL;
1128 if (IS_ERR_OR_NULL(ift)) {
1129 in6_ifa_put(ifp);
1130 in6_dev_put(idev);
1131 pr_info("%s: retry temporary address regeneration\n", __func__);
1132 tmpaddr = &addr;
1133 write_lock(&idev->lock);
1134 goto retry;

--- 304 unchanged lines hidden (view full) ---

1439 return -EADDRNOTAVAIL;
1440
1441 *saddr = hiscore->ifa->addr;
1442 in6_ifa_put(hiscore->ifa);
1443 return 0;
1444}
1445EXPORT_SYMBOL(ipv6_dev_get_saddr);
1446
1447int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr,
1448 unsigned char banned_flags)
1449{
1450 struct inet6_ifaddr *ifp;
1451 int err = -EADDRNOTAVAIL;
1452
1453 list_for_each_entry(ifp, &idev->addr_list, if_list) {
1454 if (ifp->scope == IFA_LINK &&
1455 !(ifp->flags & banned_flags)) {
1456 *addr = ifp->addr;
1457 err = 0;
1458 break;
1459 }
1460 }
1461 return err;
1462}
1463
1451int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
1452 unsigned char banned_flags)
1453{
1454 struct inet6_dev *idev;
1455 int err = -EADDRNOTAVAIL;
1456
1457 rcu_read_lock();
1458 idev = __in6_dev_get(dev);
1459 if (idev) {
1464int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
1465 unsigned char banned_flags)
1466{
1467 struct inet6_dev *idev;
1468 int err = -EADDRNOTAVAIL;
1469
1470 rcu_read_lock();
1471 idev = __in6_dev_get(dev);
1472 if (idev) {
1460 struct inet6_ifaddr *ifp;
1461
1462 read_lock_bh(&idev->lock);
1473 read_lock_bh(&idev->lock);
1463 list_for_each_entry(ifp, &idev->addr_list, if_list) {
1464 if (ifp->scope == IFA_LINK &&
1465 !(ifp->flags & banned_flags)) {
1466 *addr = ifp->addr;
1467 err = 0;
1468 break;
1469 }
1470 }
1474 err = __ipv6_get_lladdr(idev, addr, banned_flags);
1471 read_unlock_bh(&idev->lock);
1472 }
1473 rcu_read_unlock();
1474 return err;
1475}
1476
1477static int ipv6_count_addresses(struct inet6_dev *idev)
1478{

--- 97 unchanged lines hidden (view full) ---

1576}
1577
1578/* Gets referenced address, destroys ifaddr */
1579
1580static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
1581{
1582 if (ifp->flags&IFA_F_PERMANENT) {
1583 spin_lock_bh(&ifp->lock);
1475 read_unlock_bh(&idev->lock);
1476 }
1477 rcu_read_unlock();
1478 return err;
1479}
1480
1481static int ipv6_count_addresses(struct inet6_dev *idev)
1482{

--- 97 unchanged lines hidden (view full) ---

1580}
1581
1582/* Gets referenced address, destroys ifaddr */
1583
1584static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
1585{
1586 if (ifp->flags&IFA_F_PERMANENT) {
1587 spin_lock_bh(&ifp->lock);
1584 addrconf_del_timer(ifp);
1588 addrconf_del_dad_timer(ifp);
1585 ifp->flags |= IFA_F_TENTATIVE;
1586 if (dad_failed)
1587 ifp->flags |= IFA_F_DADFAILED;
1588 spin_unlock_bh(&ifp->lock);
1589 if (dad_failed)
1590 ipv6_ifa_notify(0, ifp);
1591 in6_ifa_put(ifp);
1592#ifdef CONFIG_IPV6_PRIVACY

--- 804 unchanged lines hidden (view full) ---

2397 rtnl_unlock();
2398 return err;
2399}
2400
2401/*
2402 * Manual configuration of address on an interface
2403 */
2404static int inet6_addr_add(struct net *net, int ifindex, const struct in6_addr *pfx,
1589 ifp->flags |= IFA_F_TENTATIVE;
1590 if (dad_failed)
1591 ifp->flags |= IFA_F_DADFAILED;
1592 spin_unlock_bh(&ifp->lock);
1593 if (dad_failed)
1594 ipv6_ifa_notify(0, ifp);
1595 in6_ifa_put(ifp);
1596#ifdef CONFIG_IPV6_PRIVACY

--- 804 unchanged lines hidden (view full) ---

2401 rtnl_unlock();
2402 return err;
2403}
2404
2405/*
2406 * Manual configuration of address on an interface
2407 */
2408static int inet6_addr_add(struct net *net, int ifindex, const struct in6_addr *pfx,
2409 const struct in6_addr *peer_pfx,
2405 unsigned int plen, __u8 ifa_flags, __u32 prefered_lft,
2406 __u32 valid_lft)
2407{
2408 struct inet6_ifaddr *ifp;
2409 struct inet6_dev *idev;
2410 struct net_device *dev;
2411 int scope;
2412 u32 flags;

--- 39 unchanged lines hidden (view full) ---

2452
2453 ifp = ipv6_add_addr(idev, pfx, plen, scope, ifa_flags);
2454
2455 if (!IS_ERR(ifp)) {
2456 spin_lock_bh(&ifp->lock);
2457 ifp->valid_lft = valid_lft;
2458 ifp->prefered_lft = prefered_lft;
2459 ifp->tstamp = jiffies;
2410 unsigned int plen, __u8 ifa_flags, __u32 prefered_lft,
2411 __u32 valid_lft)
2412{
2413 struct inet6_ifaddr *ifp;
2414 struct inet6_dev *idev;
2415 struct net_device *dev;
2416 int scope;
2417 u32 flags;

--- 39 unchanged lines hidden (view full) ---

2457
2458 ifp = ipv6_add_addr(idev, pfx, plen, scope, ifa_flags);
2459
2460 if (!IS_ERR(ifp)) {
2461 spin_lock_bh(&ifp->lock);
2462 ifp->valid_lft = valid_lft;
2463 ifp->prefered_lft = prefered_lft;
2464 ifp->tstamp = jiffies;
2465 if (peer_pfx)
2466 ifp->peer_addr = *peer_pfx;
2460 spin_unlock_bh(&ifp->lock);
2461
2462 addrconf_prefix_route(&ifp->addr, ifp->prefix_len, dev,
2463 expires, flags);
2464 /*
2465 * Note that section 3.1 of RFC 4429 indicates
2466 * that the Optimistic flag should not be set for
2467 * manually configured addresses

--- 27 unchanged lines hidden (view full) ---

2495 read_lock_bh(&idev->lock);
2496 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2497 if (ifp->prefix_len == plen &&
2498 ipv6_addr_equal(pfx, &ifp->addr)) {
2499 in6_ifa_hold(ifp);
2500 read_unlock_bh(&idev->lock);
2501
2502 ipv6_del_addr(ifp);
2467 spin_unlock_bh(&ifp->lock);
2468
2469 addrconf_prefix_route(&ifp->addr, ifp->prefix_len, dev,
2470 expires, flags);
2471 /*
2472 * Note that section 3.1 of RFC 4429 indicates
2473 * that the Optimistic flag should not be set for
2474 * manually configured addresses

--- 27 unchanged lines hidden (view full) ---

2502 read_lock_bh(&idev->lock);
2503 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2504 if (ifp->prefix_len == plen &&
2505 ipv6_addr_equal(pfx, &ifp->addr)) {
2506 in6_ifa_hold(ifp);
2507 read_unlock_bh(&idev->lock);
2508
2509 ipv6_del_addr(ifp);
2503
2504 /* If the last address is deleted administratively,
2505 disable IPv6 on this interface.
2506 */
2507 if (list_empty(&idev->addr_list))
2508 addrconf_ifdown(idev->dev, 1);
2509 return 0;
2510 }
2511 }
2512 read_unlock_bh(&idev->lock);
2513 return -EADDRNOTAVAIL;
2514}
2515
2516

--- 4 unchanged lines hidden (view full) ---

2521
2522 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2523 return -EPERM;
2524
2525 if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
2526 return -EFAULT;
2527
2528 rtnl_lock();
2510 return 0;
2511 }
2512 }
2513 read_unlock_bh(&idev->lock);
2514 return -EADDRNOTAVAIL;
2515}
2516
2517

--- 4 unchanged lines hidden (view full) ---

2522
2523 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2524 return -EPERM;
2525
2526 if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
2527 return -EFAULT;
2528
2529 rtnl_lock();
2529 err = inet6_addr_add(net, ireq.ifr6_ifindex, &ireq.ifr6_addr,
2530 err = inet6_addr_add(net, ireq.ifr6_ifindex, &ireq.ifr6_addr, NULL,
2530 ireq.ifr6_prefixlen, IFA_F_PERMANENT,
2531 INFINITY_LIFE_TIME, INFINITY_LIFE_TIME);
2532 rtnl_unlock();
2533 return err;
2534}
2535
2536int addrconf_del_ifaddr(struct net *net, void __user *arg)
2537{

--- 215 unchanged lines hidden (view full) ---

2753#endif
2754
2755#if IS_ENABLED(CONFIG_NET_IPGRE)
2756static void addrconf_gre_config(struct net_device *dev)
2757{
2758 struct inet6_dev *idev;
2759 struct in6_addr addr;
2760
2531 ireq.ifr6_prefixlen, IFA_F_PERMANENT,
2532 INFINITY_LIFE_TIME, INFINITY_LIFE_TIME);
2533 rtnl_unlock();
2534 return err;
2535}
2536
2537int addrconf_del_ifaddr(struct net *net, void __user *arg)
2538{

--- 215 unchanged lines hidden (view full) ---

2754#endif
2755
2756#if IS_ENABLED(CONFIG_NET_IPGRE)
2757static void addrconf_gre_config(struct net_device *dev)
2758{
2759 struct inet6_dev *idev;
2760 struct in6_addr addr;
2761
2761 pr_info("%s(%s)\n", __func__, dev->name);
2762
2763 ASSERT_RTNL();
2764
2765 if ((idev = ipv6_find_idev(dev)) == NULL) {
2766 pr_debug("%s: add_dev failed\n", __func__);
2767 return;
2768 }
2769
2770 ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0);

--- 50 unchanged lines hidden (view full) ---

2821 if (IS_ERR(idev)) {
2822 pr_debug("init ip6-ip6: add_dev failed\n");
2823 return;
2824 }
2825 ip6_tnl_add_linklocal(idev);
2826}
2827
2828static int addrconf_notify(struct notifier_block *this, unsigned long event,
2762 ASSERT_RTNL();
2763
2764 if ((idev = ipv6_find_idev(dev)) == NULL) {
2765 pr_debug("%s: add_dev failed\n", __func__);
2766 return;
2767 }
2768
2769 ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0);

--- 50 unchanged lines hidden (view full) ---

2820 if (IS_ERR(idev)) {
2821 pr_debug("init ip6-ip6: add_dev failed\n");
2822 return;
2823 }
2824 ip6_tnl_add_linklocal(idev);
2825}
2826
2827static int addrconf_notify(struct notifier_block *this, unsigned long event,
2829 void *data)
2828 void *ptr)
2830{
2829{
2831 struct net_device *dev = (struct net_device *) data;
2830 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2832 struct inet6_dev *idev = __in6_dev_get(dev);
2833 int run_pending = 0;
2834 int err;
2835
2836 switch (event) {
2837 case NETDEV_REGISTER:
2838 if (!idev && dev->mtu >= IPV6_MIN_MTU) {
2839 idev = ipv6_add_dev(dev);

--- 191 unchanged lines hidden (view full) ---

3031 for (i = 0; i < IN6_ADDR_HSIZE; i++) {
3032 struct hlist_head *h = &inet6_addr_lst[i];
3033
3034 spin_lock_bh(&addrconf_hash_lock);
3035 restart:
3036 hlist_for_each_entry_rcu(ifa, h, addr_lst) {
3037 if (ifa->idev == idev) {
3038 hlist_del_init_rcu(&ifa->addr_lst);
2831 struct inet6_dev *idev = __in6_dev_get(dev);
2832 int run_pending = 0;
2833 int err;
2834
2835 switch (event) {
2836 case NETDEV_REGISTER:
2837 if (!idev && dev->mtu >= IPV6_MIN_MTU) {
2838 idev = ipv6_add_dev(dev);

--- 191 unchanged lines hidden (view full) ---

3030 for (i = 0; i < IN6_ADDR_HSIZE; i++) {
3031 struct hlist_head *h = &inet6_addr_lst[i];
3032
3033 spin_lock_bh(&addrconf_hash_lock);
3034 restart:
3035 hlist_for_each_entry_rcu(ifa, h, addr_lst) {
3036 if (ifa->idev == idev) {
3037 hlist_del_init_rcu(&ifa->addr_lst);
3039 addrconf_del_timer(ifa);
3038 addrconf_del_dad_timer(ifa);
3040 goto restart;
3041 }
3042 }
3043 spin_unlock_bh(&addrconf_hash_lock);
3044 }
3045
3046 write_lock_bh(&idev->lock);
3047
3039 goto restart;
3040 }
3041 }
3042 spin_unlock_bh(&addrconf_hash_lock);
3043 }
3044
3045 write_lock_bh(&idev->lock);
3046
3047 addrconf_del_rs_timer(idev);
3048
3048 /* Step 2: clear flags for stateless addrconf */
3049 if (!how)
3050 idev->if_flags &= ~(IF_RS_SENT|IF_RA_RCVD|IF_READY);
3051
3052#ifdef CONFIG_IPV6_PRIVACY
3053 if (how && del_timer(&idev->regen_timer))
3054 in6_dev_put(idev);
3055

--- 13 unchanged lines hidden (view full) ---

3069 in6_ifa_put(ifa);
3070 write_lock_bh(&idev->lock);
3071 }
3072#endif
3073
3074 while (!list_empty(&idev->addr_list)) {
3075 ifa = list_first_entry(&idev->addr_list,
3076 struct inet6_ifaddr, if_list);
3049 /* Step 2: clear flags for stateless addrconf */
3050 if (!how)
3051 idev->if_flags &= ~(IF_RS_SENT|IF_RA_RCVD|IF_READY);
3052
3053#ifdef CONFIG_IPV6_PRIVACY
3054 if (how && del_timer(&idev->regen_timer))
3055 in6_dev_put(idev);
3056

--- 13 unchanged lines hidden (view full) ---

3070 in6_ifa_put(ifa);
3071 write_lock_bh(&idev->lock);
3072 }
3073#endif
3074
3075 while (!list_empty(&idev->addr_list)) {
3076 ifa = list_first_entry(&idev->addr_list,
3077 struct inet6_ifaddr, if_list);
3077 addrconf_del_timer(ifa);
3078 addrconf_del_dad_timer(ifa);
3078
3079 list_del(&ifa->if_list);
3080
3081 write_unlock_bh(&idev->lock);
3082
3083 spin_lock_bh(&ifa->state_lock);
3084 state = ifa->state;
3085 ifa->state = INET6_IFADDR_STATE_DEAD;

--- 25 unchanged lines hidden (view full) ---

3111 neigh_ifdown(&nd_tbl, dev);
3112 in6_dev_put(idev);
3113 }
3114 return 0;
3115}
3116
3117static void addrconf_rs_timer(unsigned long data)
3118{
3079
3080 list_del(&ifa->if_list);
3081
3082 write_unlock_bh(&idev->lock);
3083
3084 spin_lock_bh(&ifa->state_lock);
3085 state = ifa->state;
3086 ifa->state = INET6_IFADDR_STATE_DEAD;

--- 25 unchanged lines hidden (view full) ---

3112 neigh_ifdown(&nd_tbl, dev);
3113 in6_dev_put(idev);
3114 }
3115 return 0;
3116}
3117
3118static void addrconf_rs_timer(unsigned long data)
3119{
3119 struct inet6_ifaddr *ifp = (struct inet6_ifaddr *) data;
3120 struct inet6_dev *idev = ifp->idev;
3120 struct inet6_dev *idev = (struct inet6_dev *)data;
3121 struct in6_addr lladdr;
3121
3122
3122 read_lock(&idev->lock);
3123 write_lock(&idev->lock);
3123 if (idev->dead || !(idev->if_flags & IF_READY))
3124 goto out;
3125
3126 if (!ipv6_accept_ra(idev))
3127 goto out;
3128
3129 /* Announcement received after solicitation was sent */
3130 if (idev->if_flags & IF_RA_RCVD)
3131 goto out;
3132
3124 if (idev->dead || !(idev->if_flags & IF_READY))
3125 goto out;
3126
3127 if (!ipv6_accept_ra(idev))
3128 goto out;
3129
3130 /* Announcement received after solicitation was sent */
3131 if (idev->if_flags & IF_RA_RCVD)
3132 goto out;
3133
3133 spin_lock(&ifp->lock);
3134 if (ifp->probes++ < idev->cnf.rtr_solicits) {
3135 /* The wait after the last probe can be shorter */
3136 addrconf_mod_timer(ifp, AC_RS,
3137 (ifp->probes == idev->cnf.rtr_solicits) ?
3138 idev->cnf.rtr_solicit_delay :
3139 idev->cnf.rtr_solicit_interval);
3140 spin_unlock(&ifp->lock);
3134 if (idev->rs_probes++ < idev->cnf.rtr_solicits) {
3135 if (!__ipv6_get_lladdr(idev, &lladdr, IFA_F_TENTATIVE))
3136 ndisc_send_rs(idev->dev, &lladdr,
3137 &in6addr_linklocal_allrouters);
3138 else
3139 goto out;
3141
3140
3142 ndisc_send_rs(idev->dev, &ifp->addr, &in6addr_linklocal_allrouters);
3141 /* The wait after the last probe can be shorter */
3142 addrconf_mod_rs_timer(idev, (idev->rs_probes ==
3143 idev->cnf.rtr_solicits) ?
3144 idev->cnf.rtr_solicit_delay :
3145 idev->cnf.rtr_solicit_interval);
3143 } else {
3146 } else {
3144 spin_unlock(&ifp->lock);
3145 /*
3146 * Note: we do not support deprecated "all on-link"
3147 * assumption any longer.
3148 */
3149 pr_debug("%s: no IPv6 routers present\n", idev->dev->name);
3150 }
3151
3152out:
3147 /*
3148 * Note: we do not support deprecated "all on-link"
3149 * assumption any longer.
3150 */
3151 pr_debug("%s: no IPv6 routers present\n", idev->dev->name);
3152 }
3153
3154out:
3153 read_unlock(&idev->lock);
3154 in6_ifa_put(ifp);
3155 write_unlock(&idev->lock);
3156 in6_dev_put(idev);
3155}
3156
3157/*
3158 * Duplicate Address Detection
3159 */
3160static void addrconf_dad_kick(struct inet6_ifaddr *ifp)
3161{
3162 unsigned long rand_num;
3163 struct inet6_dev *idev = ifp->idev;
3164
3165 if (ifp->flags & IFA_F_OPTIMISTIC)
3166 rand_num = 0;
3167 else
3168 rand_num = net_random() % (idev->cnf.rtr_solicit_delay ? : 1);
3169
3157}
3158
3159/*
3160 * Duplicate Address Detection
3161 */
3162static void addrconf_dad_kick(struct inet6_ifaddr *ifp)
3163{
3164 unsigned long rand_num;
3165 struct inet6_dev *idev = ifp->idev;
3166
3167 if (ifp->flags & IFA_F_OPTIMISTIC)
3168 rand_num = 0;
3169 else
3170 rand_num = net_random() % (idev->cnf.rtr_solicit_delay ? : 1);
3171
3170 ifp->probes = idev->cnf.dad_transmits;
3171 addrconf_mod_timer(ifp, AC_DAD, rand_num);
3172 ifp->dad_probes = idev->cnf.dad_transmits;
3173 addrconf_mod_dad_timer(ifp, rand_num);
3172}
3173
3174static void addrconf_dad_start(struct inet6_ifaddr *ifp)
3175{
3176 struct inet6_dev *idev = ifp->idev;
3177 struct net_device *dev = idev->dev;
3178
3179 addrconf_join_solict(dev, &ifp->addr);

--- 44 unchanged lines hidden (view full) ---

3224}
3225
3226static void addrconf_dad_timer(unsigned long data)
3227{
3228 struct inet6_ifaddr *ifp = (struct inet6_ifaddr *) data;
3229 struct inet6_dev *idev = ifp->idev;
3230 struct in6_addr mcaddr;
3231
3174}
3175
3176static void addrconf_dad_start(struct inet6_ifaddr *ifp)
3177{
3178 struct inet6_dev *idev = ifp->idev;
3179 struct net_device *dev = idev->dev;
3180
3181 addrconf_join_solict(dev, &ifp->addr);

--- 44 unchanged lines hidden (view full) ---

3226}
3227
3228static void addrconf_dad_timer(unsigned long data)
3229{
3230 struct inet6_ifaddr *ifp = (struct inet6_ifaddr *) data;
3231 struct inet6_dev *idev = ifp->idev;
3232 struct in6_addr mcaddr;
3233
3232 if (!ifp->probes && addrconf_dad_end(ifp))
3234 if (!ifp->dad_probes && addrconf_dad_end(ifp))
3233 goto out;
3234
3235 goto out;
3236
3235 read_lock(&idev->lock);
3237 write_lock(&idev->lock);
3236 if (idev->dead || !(idev->if_flags & IF_READY)) {
3238 if (idev->dead || !(idev->if_flags & IF_READY)) {
3237 read_unlock(&idev->lock);
3239 write_unlock(&idev->lock);
3238 goto out;
3239 }
3240
3241 spin_lock(&ifp->lock);
3242 if (ifp->state == INET6_IFADDR_STATE_DEAD) {
3243 spin_unlock(&ifp->lock);
3240 goto out;
3241 }
3242
3243 spin_lock(&ifp->lock);
3244 if (ifp->state == INET6_IFADDR_STATE_DEAD) {
3245 spin_unlock(&ifp->lock);
3244 read_unlock(&idev->lock);
3246 write_unlock(&idev->lock);
3245 goto out;
3246 }
3247
3247 goto out;
3248 }
3249
3248 if (ifp->probes == 0) {
3250 if (ifp->dad_probes == 0) {
3249 /*
3250 * DAD was successful
3251 */
3252
3253 ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
3254 spin_unlock(&ifp->lock);
3251 /*
3252 * DAD was successful
3253 */
3254
3255 ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
3256 spin_unlock(&ifp->lock);
3255 read_unlock(&idev->lock);
3257 write_unlock(&idev->lock);
3256
3257 addrconf_dad_completed(ifp);
3258
3259 goto out;
3260 }
3261
3258
3259 addrconf_dad_completed(ifp);
3260
3261 goto out;
3262 }
3263
3262 ifp->probes--;
3263 addrconf_mod_timer(ifp, AC_DAD, ifp->idev->nd_parms->retrans_time);
3264 ifp->dad_probes--;
3265 addrconf_mod_dad_timer(ifp, ifp->idev->nd_parms->retrans_time);
3264 spin_unlock(&ifp->lock);
3266 spin_unlock(&ifp->lock);
3265 read_unlock(&idev->lock);
3267 write_unlock(&idev->lock);
3266
3267 /* send a neighbour solicitation for our addr */
3268 addrconf_addr_solict_mult(&ifp->addr, &mcaddr);
3269 ndisc_send_ns(ifp->idev->dev, NULL, &ifp->addr, &mcaddr, &in6addr_any);
3270out:
3271 in6_ifa_put(ifp);
3272}
3273
3274static void addrconf_dad_completed(struct inet6_ifaddr *ifp)
3275{
3276 struct net_device *dev = ifp->idev->dev;
3268
3269 /* send a neighbour solicitation for our addr */
3270 addrconf_addr_solict_mult(&ifp->addr, &mcaddr);
3271 ndisc_send_ns(ifp->idev->dev, NULL, &ifp->addr, &mcaddr, &in6addr_any);
3272out:
3273 in6_ifa_put(ifp);
3274}
3275
3276static void addrconf_dad_completed(struct inet6_ifaddr *ifp)
3277{
3278 struct net_device *dev = ifp->idev->dev;
3279 struct in6_addr lladdr;
3280 bool send_rs, send_mld;
3277
3281
3282 addrconf_del_dad_timer(ifp);
3283
3278 /*
3279 * Configure the address for reception. Now it is valid.
3280 */
3281
3282 ipv6_ifa_notify(RTM_NEWADDR, ifp);
3283
3284 /* If added prefix is link local and we are prepared to process
3285 router advertisements, start sending router solicitations.
3286 */
3287
3284 /*
3285 * Configure the address for reception. Now it is valid.
3286 */
3287
3288 ipv6_ifa_notify(RTM_NEWADDR, ifp);
3289
3290 /* If added prefix is link local and we are prepared to process
3291 router advertisements, start sending router solicitations.
3292 */
3293
3288 if (ipv6_accept_ra(ifp->idev) &&
3289 ifp->idev->cnf.rtr_solicits > 0 &&
3290 (dev->flags&IFF_LOOPBACK) == 0 &&
3291 (ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL)) {
3294 read_lock_bh(&ifp->idev->lock);
3295 spin_lock(&ifp->lock);
3296 send_mld = ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL &&
3297 ifp->idev->valid_ll_addr_cnt == 1;
3298 send_rs = send_mld &&
3299 ipv6_accept_ra(ifp->idev) &&
3300 ifp->idev->cnf.rtr_solicits > 0 &&
3301 (dev->flags&IFF_LOOPBACK) == 0;
3302 spin_unlock(&ifp->lock);
3303 read_unlock_bh(&ifp->idev->lock);
3304
3305 /* While dad is in progress mld report's source address is in6_addrany.
3306 * Resend with proper ll now.
3307 */
3308 if (send_mld)
3309 ipv6_mc_dad_complete(ifp->idev);
3310
3311 if (send_rs) {
3292 /*
3293 * If a host as already performed a random delay
3294 * [...] as part of DAD [...] there is no need
3295 * to delay again before sending the first RS
3296 */
3312 /*
3313 * If a host as already performed a random delay
3314 * [...] as part of DAD [...] there is no need
3315 * to delay again before sending the first RS
3316 */
3297 ndisc_send_rs(ifp->idev->dev, &ifp->addr, &in6addr_linklocal_allrouters);
3317 if (ipv6_get_lladdr(dev, &lladdr, IFA_F_TENTATIVE))
3318 return;
3319 ndisc_send_rs(dev, &lladdr, &in6addr_linklocal_allrouters);
3298
3320
3299 spin_lock_bh(&ifp->lock);
3300 ifp->probes = 1;
3321 write_lock_bh(&ifp->idev->lock);
3322 spin_lock(&ifp->lock);
3323 ifp->idev->rs_probes = 1;
3301 ifp->idev->if_flags |= IF_RS_SENT;
3324 ifp->idev->if_flags |= IF_RS_SENT;
3302 addrconf_mod_timer(ifp, AC_RS, ifp->idev->cnf.rtr_solicit_interval);
3303 spin_unlock_bh(&ifp->lock);
3325 addrconf_mod_rs_timer(ifp->idev,
3326 ifp->idev->cnf.rtr_solicit_interval);
3327 spin_unlock(&ifp->lock);
3328 write_unlock_bh(&ifp->idev->lock);
3304 }
3305}
3306
3307static void addrconf_dad_run(struct inet6_dev *idev)
3308{
3309 struct inet6_ifaddr *ifp;
3310
3311 read_lock_bh(&idev->lock);

--- 295 unchanged lines hidden (view full) ---

3607 now, next, next_sec, next_sched));
3608
3609 addr_chk_timer.expires = next_sched;
3610 add_timer(&addr_chk_timer);
3611 spin_unlock(&addrconf_verify_lock);
3612 rcu_read_unlock_bh();
3613}
3614
3329 }
3330}
3331
3332static void addrconf_dad_run(struct inet6_dev *idev)
3333{
3334 struct inet6_ifaddr *ifp;
3335
3336 read_lock_bh(&idev->lock);

--- 295 unchanged lines hidden (view full) ---

3632 now, next, next_sec, next_sched));
3633
3634 addr_chk_timer.expires = next_sched;
3635 add_timer(&addr_chk_timer);
3636 spin_unlock(&addrconf_verify_lock);
3637 rcu_read_unlock_bh();
3638}
3639
3615static struct in6_addr *extract_addr(struct nlattr *addr, struct nlattr *local)
3640static struct in6_addr *extract_addr(struct nlattr *addr, struct nlattr *local,
3641 struct in6_addr **peer_pfx)
3616{
3617 struct in6_addr *pfx = NULL;
3618
3642{
3643 struct in6_addr *pfx = NULL;
3644
3645 *peer_pfx = NULL;
3646
3619 if (addr)
3620 pfx = nla_data(addr);
3621
3622 if (local) {
3623 if (pfx && nla_memcmp(local, pfx, sizeof(*pfx)))
3647 if (addr)
3648 pfx = nla_data(addr);
3649
3650 if (local) {
3651 if (pfx && nla_memcmp(local, pfx, sizeof(*pfx)))
3624 pfx = NULL;
3625 else
3626 pfx = nla_data(local);
3652 *peer_pfx = pfx;
3653 pfx = nla_data(local);
3627 }
3628
3629 return pfx;
3630}
3631
3632static const struct nla_policy ifa_ipv6_policy[IFA_MAX+1] = {
3633 [IFA_ADDRESS] = { .len = sizeof(struct in6_addr) },
3634 [IFA_LOCAL] = { .len = sizeof(struct in6_addr) },
3635 [IFA_CACHEINFO] = { .len = sizeof(struct ifa_cacheinfo) },
3636};
3637
3638static int
3639inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh)
3640{
3641 struct net *net = sock_net(skb->sk);
3642 struct ifaddrmsg *ifm;
3643 struct nlattr *tb[IFA_MAX+1];
3654 }
3655
3656 return pfx;
3657}
3658
3659static const struct nla_policy ifa_ipv6_policy[IFA_MAX+1] = {
3660 [IFA_ADDRESS] = { .len = sizeof(struct in6_addr) },
3661 [IFA_LOCAL] = { .len = sizeof(struct in6_addr) },
3662 [IFA_CACHEINFO] = { .len = sizeof(struct ifa_cacheinfo) },
3663};
3664
3665static int
3666inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh)
3667{
3668 struct net *net = sock_net(skb->sk);
3669 struct ifaddrmsg *ifm;
3670 struct nlattr *tb[IFA_MAX+1];
3644 struct in6_addr *pfx;
3671 struct in6_addr *pfx, *peer_pfx;
3645 int err;
3646
3647 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
3648 if (err < 0)
3649 return err;
3650
3651 ifm = nlmsg_data(nlh);
3672 int err;
3673
3674 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
3675 if (err < 0)
3676 return err;
3677
3678 ifm = nlmsg_data(nlh);
3652 pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]);
3679 pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx);
3653 if (pfx == NULL)
3654 return -EINVAL;
3655
3656 return inet6_addr_del(net, ifm->ifa_index, pfx, ifm->ifa_prefixlen);
3657}
3658
3659static int inet6_addr_modify(struct inet6_ifaddr *ifp, u8 ifa_flags,
3660 u32 prefered_lft, u32 valid_lft)

--- 41 unchanged lines hidden (view full) ---

3702}
3703
3704static int
3705inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh)
3706{
3707 struct net *net = sock_net(skb->sk);
3708 struct ifaddrmsg *ifm;
3709 struct nlattr *tb[IFA_MAX+1];
3680 if (pfx == NULL)
3681 return -EINVAL;
3682
3683 return inet6_addr_del(net, ifm->ifa_index, pfx, ifm->ifa_prefixlen);
3684}
3685
3686static int inet6_addr_modify(struct inet6_ifaddr *ifp, u8 ifa_flags,
3687 u32 prefered_lft, u32 valid_lft)

--- 41 unchanged lines hidden (view full) ---

3729}
3730
3731static int
3732inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh)
3733{
3734 struct net *net = sock_net(skb->sk);
3735 struct ifaddrmsg *ifm;
3736 struct nlattr *tb[IFA_MAX+1];
3710 struct in6_addr *pfx;
3737 struct in6_addr *pfx, *peer_pfx;
3711 struct inet6_ifaddr *ifa;
3712 struct net_device *dev;
3713 u32 valid_lft = INFINITY_LIFE_TIME, preferred_lft = INFINITY_LIFE_TIME;
3714 u8 ifa_flags;
3715 int err;
3716
3717 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
3718 if (err < 0)
3719 return err;
3720
3721 ifm = nlmsg_data(nlh);
3738 struct inet6_ifaddr *ifa;
3739 struct net_device *dev;
3740 u32 valid_lft = INFINITY_LIFE_TIME, preferred_lft = INFINITY_LIFE_TIME;
3741 u8 ifa_flags;
3742 int err;
3743
3744 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
3745 if (err < 0)
3746 return err;
3747
3748 ifm = nlmsg_data(nlh);
3722 pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]);
3749 pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx);
3723 if (pfx == NULL)
3724 return -EINVAL;
3725
3726 if (tb[IFA_CACHEINFO]) {
3727 struct ifa_cacheinfo *ci;
3728
3729 ci = nla_data(tb[IFA_CACHEINFO]);
3730 valid_lft = ci->ifa_valid;

--- 11 unchanged lines hidden (view full) ---

3742 ifa_flags = ifm->ifa_flags & (IFA_F_NODAD | IFA_F_HOMEADDRESS);
3743
3744 ifa = ipv6_get_ifaddr(net, pfx, dev, 1);
3745 if (ifa == NULL) {
3746 /*
3747 * It would be best to check for !NLM_F_CREATE here but
3748 * userspace alreay relies on not having to provide this.
3749 */
3750 if (pfx == NULL)
3751 return -EINVAL;
3752
3753 if (tb[IFA_CACHEINFO]) {
3754 struct ifa_cacheinfo *ci;
3755
3756 ci = nla_data(tb[IFA_CACHEINFO]);
3757 valid_lft = ci->ifa_valid;

--- 11 unchanged lines hidden (view full) ---

3769 ifa_flags = ifm->ifa_flags & (IFA_F_NODAD | IFA_F_HOMEADDRESS);
3770
3771 ifa = ipv6_get_ifaddr(net, pfx, dev, 1);
3772 if (ifa == NULL) {
3773 /*
3774 * It would be best to check for !NLM_F_CREATE here but
3775 * userspace alreay relies on not having to provide this.
3776 */
3750 return inet6_addr_add(net, ifm->ifa_index, pfx,
3777 return inet6_addr_add(net, ifm->ifa_index, pfx, peer_pfx,
3751 ifm->ifa_prefixlen, ifa_flags,
3752 preferred_lft, valid_lft);
3753 }
3754
3755 if (nlh->nlmsg_flags & NLM_F_EXCL ||
3756 !(nlh->nlmsg_flags & NLM_F_REPLACE))
3757 err = -EEXIST;
3758 else

--- 40 unchanged lines hidden (view full) ---

3799 return RT_SCOPE_SITE;
3800 else
3801 return RT_SCOPE_UNIVERSE;
3802}
3803
3804static inline int inet6_ifaddr_msgsize(void)
3805{
3806 return NLMSG_ALIGN(sizeof(struct ifaddrmsg))
3778 ifm->ifa_prefixlen, ifa_flags,
3779 preferred_lft, valid_lft);
3780 }
3781
3782 if (nlh->nlmsg_flags & NLM_F_EXCL ||
3783 !(nlh->nlmsg_flags & NLM_F_REPLACE))
3784 err = -EEXIST;
3785 else

--- 40 unchanged lines hidden (view full) ---

3826 return RT_SCOPE_SITE;
3827 else
3828 return RT_SCOPE_UNIVERSE;
3829}
3830
3831static inline int inet6_ifaddr_msgsize(void)
3832{
3833 return NLMSG_ALIGN(sizeof(struct ifaddrmsg))
3834 + nla_total_size(16) /* IFA_LOCAL */
3807 + nla_total_size(16) /* IFA_ADDRESS */
3808 + nla_total_size(sizeof(struct ifa_cacheinfo));
3809}
3810
3811static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
3812 u32 portid, u32 seq, int event, unsigned int flags)
3813{
3814 struct nlmsghdr *nlh;

--- 22 unchanged lines hidden (view full) ---

3837 valid = 0;
3838 }
3839 }
3840 } else {
3841 preferred = INFINITY_LIFE_TIME;
3842 valid = INFINITY_LIFE_TIME;
3843 }
3844
3835 + nla_total_size(16) /* IFA_ADDRESS */
3836 + nla_total_size(sizeof(struct ifa_cacheinfo));
3837}
3838
3839static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
3840 u32 portid, u32 seq, int event, unsigned int flags)
3841{
3842 struct nlmsghdr *nlh;

--- 22 unchanged lines hidden (view full) ---

3865 valid = 0;
3866 }
3867 }
3868 } else {
3869 preferred = INFINITY_LIFE_TIME;
3870 valid = INFINITY_LIFE_TIME;
3871 }
3872
3845 if (nla_put(skb, IFA_ADDRESS, 16, &ifa->addr) < 0 ||
3846 put_cacheinfo(skb, ifa->cstamp, ifa->tstamp, preferred, valid) < 0) {
3847 nlmsg_cancel(skb, nlh);
3848 return -EMSGSIZE;
3849 }
3873 if (!ipv6_addr_any(&ifa->peer_addr)) {
3874 if (nla_put(skb, IFA_LOCAL, 16, &ifa->addr) < 0 ||
3875 nla_put(skb, IFA_ADDRESS, 16, &ifa->peer_addr) < 0)
3876 goto error;
3877 } else
3878 if (nla_put(skb, IFA_ADDRESS, 16, &ifa->addr) < 0)
3879 goto error;
3850
3880
3881 if (put_cacheinfo(skb, ifa->cstamp, ifa->tstamp, preferred, valid) < 0)
3882 goto error;
3883
3851 return nlmsg_end(skb, nlh);
3884 return nlmsg_end(skb, nlh);
3885
3886error:
3887 nlmsg_cancel(skb, nlh);
3888 return -EMSGSIZE;
3852}
3853
3854static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
3855 u32 portid, u32 seq, int event, u16 flags)
3856{
3857 struct nlmsghdr *nlh;
3858 u8 scope = RT_SCOPE_UNIVERSE;
3859 int ifindex = ifmca->idev->dev->ifindex;

--- 183 unchanged lines hidden (view full) ---

4043 return inet6_dump_addr(skb, cb, type);
4044}
4045
4046static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh)
4047{
4048 struct net *net = sock_net(in_skb->sk);
4049 struct ifaddrmsg *ifm;
4050 struct nlattr *tb[IFA_MAX+1];
3889}
3890
3891static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
3892 u32 portid, u32 seq, int event, u16 flags)
3893{
3894 struct nlmsghdr *nlh;
3895 u8 scope = RT_SCOPE_UNIVERSE;
3896 int ifindex = ifmca->idev->dev->ifindex;

--- 183 unchanged lines hidden (view full) ---

4080 return inet6_dump_addr(skb, cb, type);
4081}
4082
4083static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh)
4084{
4085 struct net *net = sock_net(in_skb->sk);
4086 struct ifaddrmsg *ifm;
4087 struct nlattr *tb[IFA_MAX+1];
4051 struct in6_addr *addr = NULL;
4088 struct in6_addr *addr = NULL, *peer;
4052 struct net_device *dev = NULL;
4053 struct inet6_ifaddr *ifa;
4054 struct sk_buff *skb;
4055 int err;
4056
4057 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
4058 if (err < 0)
4059 goto errout;
4060
4089 struct net_device *dev = NULL;
4090 struct inet6_ifaddr *ifa;
4091 struct sk_buff *skb;
4092 int err;
4093
4094 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
4095 if (err < 0)
4096 goto errout;
4097
4061 addr = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]);
4098 addr = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer);
4062 if (addr == NULL) {
4063 err = -EINVAL;
4064 goto errout;
4065 }
4066
4067 ifm = nlmsg_data(nlh);
4068 if (ifm->ifa_index)
4069 dev = __dev_get_by_index(net, ifm->ifa_index);

--- 262 unchanged lines hidden (view full) ---

4332 * of this. Otherwise, we need to request our rs here.
4333 */
4334 ndisc_send_rs(dev, &ll_addr, &in6addr_linklocal_allrouters);
4335 update_rs = true;
4336 }
4337
4338 write_lock_bh(&idev->lock);
4339
4099 if (addr == NULL) {
4100 err = -EINVAL;
4101 goto errout;
4102 }
4103
4104 ifm = nlmsg_data(nlh);
4105 if (ifm->ifa_index)
4106 dev = __dev_get_by_index(net, ifm->ifa_index);

--- 262 unchanged lines hidden (view full) ---

4369 * of this. Otherwise, we need to request our rs here.
4370 */
4371 ndisc_send_rs(dev, &ll_addr, &in6addr_linklocal_allrouters);
4372 update_rs = true;
4373 }
4374
4375 write_lock_bh(&idev->lock);
4376
4340 if (update_rs)
4377 if (update_rs) {
4341 idev->if_flags |= IF_RS_SENT;
4378 idev->if_flags |= IF_RS_SENT;
4379 idev->rs_probes = 1;
4380 addrconf_mod_rs_timer(idev, idev->cnf.rtr_solicit_interval);
4381 }
4342
4343 /* Well, that's kinda nasty ... */
4344 list_for_each_entry(ifp, &idev->addr_list, if_list) {
4345 spin_lock(&ifp->lock);
4346 if (ifp->tokenized) {
4347 ifp->valid_lft = 0;
4348 ifp->prefered_lft = 0;
4349 }
4350 spin_unlock(&ifp->lock);
4351 }
4352
4353 write_unlock_bh(&idev->lock);
4382
4383 /* Well, that's kinda nasty ... */
4384 list_for_each_entry(ifp, &idev->addr_list, if_list) {
4385 spin_lock(&ifp->lock);
4386 if (ifp->tokenized) {
4387 ifp->valid_lft = 0;
4388 ifp->prefered_lft = 0;
4389 }
4390 spin_unlock(&ifp->lock);
4391 }
4392
4393 write_unlock_bh(&idev->lock);
4394 addrconf_verify(0);
4354 return 0;
4355}
4356
4357static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla)
4358{
4359 int err = -EINVAL;
4360 struct inet6_dev *idev = __in6_dev_get(dev);
4361 struct nlattr *tb[IFLA_INET6_MAX + 1];

--- 181 unchanged lines hidden (view full) ---

4543 }
4544 rtnl_notify(skb, net, 0, RTNLGRP_IPV6_PREFIX, NULL, GFP_ATOMIC);
4545 return;
4546errout:
4547 if (err < 0)
4548 rtnl_set_sk_err(net, RTNLGRP_IPV6_PREFIX, err);
4549}
4550
4395 return 0;
4396}
4397
4398static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla)
4399{
4400 int err = -EINVAL;
4401 struct inet6_dev *idev = __in6_dev_get(dev);
4402 struct nlattr *tb[IFLA_INET6_MAX + 1];

--- 181 unchanged lines hidden (view full) ---

4584 }
4585 rtnl_notify(skb, net, 0, RTNLGRP_IPV6_PREFIX, NULL, GFP_ATOMIC);
4586 return;
4587errout:
4588 if (err < 0)
4589 rtnl_set_sk_err(net, RTNLGRP_IPV6_PREFIX, err);
4590}
4591
4592static void update_valid_ll_addr_cnt(struct inet6_ifaddr *ifp, int count)
4593{
4594 write_lock_bh(&ifp->idev->lock);
4595 spin_lock(&ifp->lock);
4596 if (((ifp->flags & (IFA_F_PERMANENT|IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|
4597 IFA_F_DADFAILED)) == IFA_F_PERMANENT) &&
4598 (ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL))
4599 ifp->idev->valid_ll_addr_cnt += count;
4600 WARN_ON(ifp->idev->valid_ll_addr_cnt < 0);
4601 spin_unlock(&ifp->lock);
4602 write_unlock_bh(&ifp->idev->lock);
4603}
4604
4551static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
4552{
4553 struct net *net = dev_net(ifp->idev->dev);
4554
4555 inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);
4556
4557 switch (event) {
4558 case RTM_NEWADDR:
4605static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
4606{
4607 struct net *net = dev_net(ifp->idev->dev);
4608
4609 inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);
4610
4611 switch (event) {
4612 case RTM_NEWADDR:
4613 update_valid_ll_addr_cnt(ifp, 1);
4614
4559 /*
4560 * If the address was optimistic
4561 * we inserted the route at the start of
4562 * our DAD process, so we don't need
4563 * to do it again
4564 */
4565 if (!(ifp->rt->rt6i_node))
4566 ip6_ins_rt(ifp->rt);
4567 if (ifp->idev->cnf.forwarding)
4568 addrconf_join_anycast(ifp);
4615 /*
4616 * If the address was optimistic
4617 * we inserted the route at the start of
4618 * our DAD process, so we don't need
4619 * to do it again
4620 */
4621 if (!(ifp->rt->rt6i_node))
4622 ip6_ins_rt(ifp->rt);
4623 if (ifp->idev->cnf.forwarding)
4624 addrconf_join_anycast(ifp);
4625 if (!ipv6_addr_any(&ifp->peer_addr))
4626 addrconf_prefix_route(&ifp->peer_addr, 128,
4627 ifp->idev->dev, 0, 0);
4569 break;
4570 case RTM_DELADDR:
4628 break;
4629 case RTM_DELADDR:
4630 update_valid_ll_addr_cnt(ifp, -1);
4631
4571 if (ifp->idev->cnf.forwarding)
4572 addrconf_leave_anycast(ifp);
4573 addrconf_leave_solict(ifp->idev, &ifp->addr);
4632 if (ifp->idev->cnf.forwarding)
4633 addrconf_leave_anycast(ifp);
4634 addrconf_leave_solict(ifp->idev, &ifp->addr);
4635 if (!ipv6_addr_any(&ifp->peer_addr)) {
4636 struct rt6_info *rt;
4637 struct net_device *dev = ifp->idev->dev;
4638
4639 rt = rt6_lookup(dev_net(dev), &ifp->peer_addr, NULL,
4640 dev->ifindex, 1);
4641 if (rt) {
4642 dst_hold(&rt->dst);
4643 if (ip6_del_rt(rt))
4644 dst_free(&rt->dst);
4645 }
4646 }
4574 dst_hold(&ifp->rt->dst);
4575
4576 if (ip6_del_rt(ifp->rt))
4577 dst_free(&ifp->rt->dst);
4578 break;
4579 }
4580 atomic_inc(&net->ipv6.dev_addr_genid);
4581}

--- 4 unchanged lines hidden (view full) ---

4586 if (likely(ifp->idev->dead == 0))
4587 __ipv6_ifa_notify(event, ifp);
4588 rcu_read_unlock_bh();
4589}
4590
4591#ifdef CONFIG_SYSCTL
4592
4593static
4647 dst_hold(&ifp->rt->dst);
4648
4649 if (ip6_del_rt(ifp->rt))
4650 dst_free(&ifp->rt->dst);
4651 break;
4652 }
4653 atomic_inc(&net->ipv6.dev_addr_genid);
4654}

--- 4 unchanged lines hidden (view full) ---

4659 if (likely(ifp->idev->dead == 0))
4660 __ipv6_ifa_notify(event, ifp);
4661 rcu_read_unlock_bh();
4662}
4663
4664#ifdef CONFIG_SYSCTL
4665
4666static
4594int addrconf_sysctl_forward(ctl_table *ctl, int write,
4667int addrconf_sysctl_forward(struct ctl_table *ctl, int write,
4595 void __user *buffer, size_t *lenp, loff_t *ppos)
4596{
4597 int *valp = ctl->data;
4598 int val = *valp;
4599 loff_t pos = *ppos;
4668 void __user *buffer, size_t *lenp, loff_t *ppos)
4669{
4670 int *valp = ctl->data;
4671 int val = *valp;
4672 loff_t pos = *ppos;
4600 ctl_table lctl;
4673 struct ctl_table lctl;
4601 int ret;
4602
4603 /*
4604 * ctl->data points to idev->cnf.forwarding, we should
4605 * not modify it until we get the rtnl lock.
4606 */
4607 lctl = *ctl;
4608 lctl.data = &val;

--- 4 unchanged lines hidden (view full) ---

4613 ret = addrconf_fixup_forwarding(ctl, valp, val);
4614 if (ret)
4615 *ppos = pos;
4616 return ret;
4617}
4618
4619static void dev_disable_change(struct inet6_dev *idev)
4620{
4674 int ret;
4675
4676 /*
4677 * ctl->data points to idev->cnf.forwarding, we should
4678 * not modify it until we get the rtnl lock.
4679 */
4680 lctl = *ctl;
4681 lctl.data = &val;

--- 4 unchanged lines hidden (view full) ---

4686 ret = addrconf_fixup_forwarding(ctl, valp, val);
4687 if (ret)
4688 *ppos = pos;
4689 return ret;
4690}
4691
4692static void dev_disable_change(struct inet6_dev *idev)
4693{
4694 struct netdev_notifier_info info;
4695
4621 if (!idev || !idev->dev)
4622 return;
4623
4696 if (!idev || !idev->dev)
4697 return;
4698
4699 netdev_notifier_info_init(&info, idev->dev);
4624 if (idev->cnf.disable_ipv6)
4700 if (idev->cnf.disable_ipv6)
4625 addrconf_notify(NULL, NETDEV_DOWN, idev->dev);
4701 addrconf_notify(NULL, NETDEV_DOWN, &info);
4626 else
4702 else
4627 addrconf_notify(NULL, NETDEV_UP, idev->dev);
4703 addrconf_notify(NULL, NETDEV_UP, &info);
4628}
4629
4630static void addrconf_disable_change(struct net *net, __s32 newf)
4631{
4632 struct net_device *dev;
4633 struct inet6_dev *idev;
4634
4635 rcu_read_lock();

--- 32 unchanged lines hidden (view full) ---

4668 } else if ((!newf) ^ (!old))
4669 dev_disable_change((struct inet6_dev *)table->extra1);
4670
4671 rtnl_unlock();
4672 return 0;
4673}
4674
4675static
4704}
4705
4706static void addrconf_disable_change(struct net *net, __s32 newf)
4707{
4708 struct net_device *dev;
4709 struct inet6_dev *idev;
4710
4711 rcu_read_lock();

--- 32 unchanged lines hidden (view full) ---

4744 } else if ((!newf) ^ (!old))
4745 dev_disable_change((struct inet6_dev *)table->extra1);
4746
4747 rtnl_unlock();
4748 return 0;
4749}
4750
4751static
4676int addrconf_sysctl_disable(ctl_table *ctl, int write,
4752int addrconf_sysctl_disable(struct ctl_table *ctl, int write,
4677 void __user *buffer, size_t *lenp, loff_t *ppos)
4678{
4679 int *valp = ctl->data;
4680 int val = *valp;
4681 loff_t pos = *ppos;
4753 void __user *buffer, size_t *lenp, loff_t *ppos)
4754{
4755 int *valp = ctl->data;
4756 int val = *valp;
4757 loff_t pos = *ppos;
4682 ctl_table lctl;
4758 struct ctl_table lctl;
4683 int ret;
4684
4685 /*
4686 * ctl->data points to idev->cnf.disable_ipv6, we should
4687 * not modify it until we get the rtnl lock.
4688 */
4689 lctl = *ctl;
4690 lctl.data = &val;

--- 5 unchanged lines hidden (view full) ---

4696 if (ret)
4697 *ppos = pos;
4698 return ret;
4699}
4700
4701static struct addrconf_sysctl_table
4702{
4703 struct ctl_table_header *sysctl_header;
4759 int ret;
4760
4761 /*
4762 * ctl->data points to idev->cnf.disable_ipv6, we should
4763 * not modify it until we get the rtnl lock.
4764 */
4765 lctl = *ctl;
4766 lctl.data = &val;

--- 5 unchanged lines hidden (view full) ---

4772 if (ret)
4773 *ppos = pos;
4774 return ret;
4775}
4776
4777static struct addrconf_sysctl_table
4778{
4779 struct ctl_table_header *sysctl_header;
4704 ctl_table addrconf_vars[DEVCONF_MAX+1];
4780 struct ctl_table addrconf_vars[DEVCONF_MAX+1];
4705} addrconf_sysctl __read_mostly = {
4706 .sysctl_header = NULL,
4707 .addrconf_vars = {
4708 {
4709 .procname = "forwarding",
4710 .data = &ipv6_devconf.forwarding,
4711 .maxlen = sizeof(int),
4712 .mode = 0644,

--- 470 unchanged lines hidden --- 		4781} addrconf_sysctl __read_mostly = {
4782 .sysctl_header = NULL,
4783 .addrconf_vars = {
4784 {
4785 .procname = "forwarding",
4786 .data = &ipv6_devconf.forwarding,
4787 .maxlen = sizeof(int),
4788 .mode = 0644,

--- 470 unchanged lines hidden ---