addrconf.c (818a23e3882b1bf65d1719e407be04716e69a4d5) addrconf.c (1be9246077f6bb1583f9347c599480621d63c66a)
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 *

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

421 if (snmp6_register_dev(ndev) < 0) {
422 ADBG(KERN_WARNING
423 "%s: cannot create /proc/net/dev_snmp6/%s\n",
424 __func__, dev->name);
425 goto err_release;
426 }
427
428 /* One reference from device. */
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 *

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

421 if (snmp6_register_dev(ndev) < 0) {
422 ADBG(KERN_WARNING
423 "%s: cannot create /proc/net/dev_snmp6/%s\n",
424 __func__, dev->name);
425 goto err_release;
426 }
427
428 /* One reference from device. */
429 in6_dev_hold(ndev);
429 refcount_set(&ndev->refcnt, 1);
430
431 if (dev->flags & (IFF_NOARP | IFF_LOOPBACK))
432 ndev->cnf.accept_dad = -1;
433
434#if IS_ENABLED(CONFIG_IPV6_SIT)
435 if (dev->type == ARPHRD_SIT && (dev->priv_flags & IFF_ISATAP)) {
436 pr_info("%s: Disabled Multicast RS\n", dev->name);
437 ndev->cnf.rtr_solicits = 0;

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

958static struct inet6_ifaddr *
959ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
960 const struct in6_addr *peer_addr, int pfxlen,
961 int scope, u32 flags, u32 valid_lft, u32 prefered_lft)
962{
963 struct net *net = dev_net(idev->dev);
964 struct inet6_ifaddr *ifa = NULL;
965 struct rt6_info *rt;
430
431 if (dev->flags & (IFF_NOARP | IFF_LOOPBACK))
432 ndev->cnf.accept_dad = -1;
433
434#if IS_ENABLED(CONFIG_IPV6_SIT)
435 if (dev->type == ARPHRD_SIT && (dev->priv_flags & IFF_ISATAP)) {
436 pr_info("%s: Disabled Multicast RS\n", dev->name);
437 ndev->cnf.rtr_solicits = 0;

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

958static struct inet6_ifaddr *
959ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
960 const struct in6_addr *peer_addr, int pfxlen,
961 int scope, u32 flags, u32 valid_lft, u32 prefered_lft)
962{
963 struct net *net = dev_net(idev->dev);
964 struct inet6_ifaddr *ifa = NULL;
965 struct rt6_info *rt;
966 struct in6_validator_info i6vi;
966 unsigned int hash;
967 int err = 0;
968 int addr_type = ipv6_addr_type(addr);
969
970 if (addr_type == IPV6_ADDR_ANY ||
971 addr_type & IPV6_ADDR_MULTICAST ||
972 (!(idev->dev->flags & IFF_LOOPBACK) &&
973 addr_type & IPV6_ADDR_LOOPBACK))
974 return ERR_PTR(-EADDRNOTAVAIL);
975
976 rcu_read_lock_bh();
967 unsigned int hash;
968 int err = 0;
969 int addr_type = ipv6_addr_type(addr);
970
971 if (addr_type == IPV6_ADDR_ANY ||
972 addr_type & IPV6_ADDR_MULTICAST ||
973 (!(idev->dev->flags & IFF_LOOPBACK) &&
974 addr_type & IPV6_ADDR_LOOPBACK))
975 return ERR_PTR(-EADDRNOTAVAIL);
976
977 rcu_read_lock_bh();
978
979 in6_dev_hold(idev);
980
977 if (idev->dead) {
978 err = -ENODEV; /*XXX*/
979 goto out2;
980 }
981
982 if (idev->cnf.disable_ipv6) {
983 err = -EACCES;
984 goto out2;
985 }
986
981 if (idev->dead) {
982 err = -ENODEV; /*XXX*/
983 goto out2;
984 }
985
986 if (idev->cnf.disable_ipv6) {
987 err = -EACCES;
988 goto out2;
989 }
990
991 i6vi.i6vi_addr = *addr;
992 i6vi.i6vi_dev = idev;
993 rcu_read_unlock_bh();
994
995 err = inet6addr_validator_notifier_call_chain(NETDEV_UP, &i6vi);
996
997 rcu_read_lock_bh();
998 err = notifier_to_errno(err);
999 if (err)
1000 goto out2;
1001
987 spin_lock(&addrconf_hash_lock);
988
989 /* Ignore adding duplicate addresses on an interface */
990 if (ipv6_chk_same_addr(dev_net(idev->dev), addr, idev->dev)) {
991 ADBG("ipv6_add_addr: already assigned\n");
992 err = -EEXIST;
993 goto out;
994 }

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

1029 ifa->valid_lft = valid_lft;
1030 ifa->prefered_lft = prefered_lft;
1031 ifa->cstamp = ifa->tstamp = jiffies;
1032 ifa->tokenized = false;
1033
1034 ifa->rt = rt;
1035
1036 ifa->idev = idev;
1002 spin_lock(&addrconf_hash_lock);
1003
1004 /* Ignore adding duplicate addresses on an interface */
1005 if (ipv6_chk_same_addr(dev_net(idev->dev), addr, idev->dev)) {
1006 ADBG("ipv6_add_addr: already assigned\n");
1007 err = -EEXIST;
1008 goto out;
1009 }

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

1044 ifa->valid_lft = valid_lft;
1045 ifa->prefered_lft = prefered_lft;
1046 ifa->cstamp = ifa->tstamp = jiffies;
1047 ifa->tokenized = false;
1048
1049 ifa->rt = rt;
1050
1051 ifa->idev = idev;
1037 in6_dev_hold(idev);
1038 /* For caller */
1039 in6_ifa_hold(ifa);
1040
1041 /* Add to big hash table */
1042 hash = inet6_addr_hash(addr);
1043
1044 hlist_add_head_rcu(&ifa->addr_lst, &inet6_addr_lst[hash]);
1045 spin_unlock(&addrconf_hash_lock);

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

1057 write_unlock(&idev->lock);
1058out2:
1059 rcu_read_unlock_bh();
1060
1061 if (likely(err == 0))
1062 inet6addr_notifier_call_chain(NETDEV_UP, ifa);
1063 else {
1064 kfree(ifa);
1052 /* For caller */
1053 in6_ifa_hold(ifa);
1054
1055 /* Add to big hash table */
1056 hash = inet6_addr_hash(addr);
1057
1058 hlist_add_head_rcu(&ifa->addr_lst, &inet6_addr_lst[hash]);
1059 spin_unlock(&addrconf_hash_lock);

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

1071 write_unlock(&idev->lock);
1072out2:
1073 rcu_read_unlock_bh();
1074
1075 if (likely(err == 0))
1076 inet6addr_notifier_call_chain(NETDEV_UP, ifa);
1077 else {
1078 kfree(ifa);
1079 in6_dev_put(idev);
1065 ifa = ERR_PTR(err);
1066 }
1067
1068 return ifa;
1069out:
1070 spin_unlock(&addrconf_hash_lock);
1071 goto out2;
1072}

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

1907
1908/* Gets referenced address, destroys ifaddr */
1909
1910static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
1911{
1912 if (dad_failed)
1913 ifp->flags |= IFA_F_DADFAILED;
1914
1080 ifa = ERR_PTR(err);
1081 }
1082
1083 return ifa;
1084out:
1085 spin_unlock(&addrconf_hash_lock);
1086 goto out2;
1087}

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

1922
1923/* Gets referenced address, destroys ifaddr */
1924
1925static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
1926{
1927 if (dad_failed)
1928 ifp->flags |= IFA_F_DADFAILED;
1929
1915 if (ifp->flags&IFA_F_PERMANENT) {
1916 spin_lock_bh(&ifp->lock);
1917 addrconf_del_dad_work(ifp);
1918 ifp->flags |= IFA_F_TENTATIVE;
1919 spin_unlock_bh(&ifp->lock);
1920 if (dad_failed)
1921 ipv6_ifa_notify(0, ifp);
1922 in6_ifa_put(ifp);
1923 } else if (ifp->flags&IFA_F_TEMPORARY) {
1930 if (ifp->flags&IFA_F_TEMPORARY) {
1924 struct inet6_ifaddr *ifpub;
1925 spin_lock_bh(&ifp->lock);
1926 ifpub = ifp->ifpub;
1927 if (ifpub) {
1928 in6_ifa_hold(ifpub);
1929 spin_unlock_bh(&ifp->lock);
1930 ipv6_create_tempaddr(ifpub, ifp);
1931 in6_ifa_put(ifpub);
1932 } else {
1933 spin_unlock_bh(&ifp->lock);
1934 }
1935 ipv6_del_addr(ifp);
1931 struct inet6_ifaddr *ifpub;
1932 spin_lock_bh(&ifp->lock);
1933 ifpub = ifp->ifpub;
1934 if (ifpub) {
1935 in6_ifa_hold(ifpub);
1936 spin_unlock_bh(&ifp->lock);
1937 ipv6_create_tempaddr(ifpub, ifp);
1938 in6_ifa_put(ifpub);
1939 } else {
1940 spin_unlock_bh(&ifp->lock);
1941 }
1942 ipv6_del_addr(ifp);
1943 } else if (ifp->flags&IFA_F_PERMANENT || !dad_failed) {
1944 spin_lock_bh(&ifp->lock);
1945 addrconf_del_dad_work(ifp);
1946 ifp->flags |= IFA_F_TENTATIVE;
1947 spin_unlock_bh(&ifp->lock);
1948 if (dad_failed)
1949 ipv6_ifa_notify(0, ifp);
1950 in6_ifa_put(ifp);
1936 } else {
1937 ipv6_del_addr(ifp);
1938 }
1939}
1940
1941static int addrconf_dad_end(struct inet6_ifaddr *ifp)
1942{
1943 int err = -ENOENT;

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

2275 This thing is done here expecting that the whole
2276 class of non-broadcast devices need not cloning.
2277 */
2278#if IS_ENABLED(CONFIG_IPV6_SIT)
2279 if (dev->type == ARPHRD_SIT && (dev->flags & IFF_POINTOPOINT))
2280 cfg.fc_flags |= RTF_NONEXTHOP;
2281#endif
2282
1951 } else {
1952 ipv6_del_addr(ifp);
1953 }
1954}
1955
1956static int addrconf_dad_end(struct inet6_ifaddr *ifp)
1957{
1958 int err = -ENOENT;

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

2290 This thing is done here expecting that the whole
2291 class of non-broadcast devices need not cloning.
2292 */
2293#if IS_ENABLED(CONFIG_IPV6_SIT)
2294 if (dev->type == ARPHRD_SIT && (dev->flags & IFF_POINTOPOINT))
2295 cfg.fc_flags |= RTF_NONEXTHOP;
2296#endif
2297
2283 ip6_route_add(&cfg);
2298 ip6_route_add(&cfg, NULL);
2284}
2285
2286
2287static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
2288 int plen,
2289 const struct net_device *dev,
2290 u32 flags, u32 noflags)
2291{

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

2330 .fc_ifindex = dev->ifindex,
2331 .fc_dst_len = 8,
2332 .fc_flags = RTF_UP,
2333 .fc_nlinfo.nl_net = dev_net(dev),
2334 };
2335
2336 ipv6_addr_set(&cfg.fc_dst, htonl(0xFF000000), 0, 0, 0);
2337
2299}
2300
2301
2302static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
2303 int plen,
2304 const struct net_device *dev,
2305 u32 flags, u32 noflags)
2306{

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

2345 .fc_ifindex = dev->ifindex,
2346 .fc_dst_len = 8,
2347 .fc_flags = RTF_UP,
2348 .fc_nlinfo.nl_net = dev_net(dev),
2349 };
2350
2351 ipv6_addr_set(&cfg.fc_dst, htonl(0xFF000000), 0, 0, 0);
2352
2338 ip6_route_add(&cfg);
2353 ip6_route_add(&cfg, NULL);
2339}
2340
2341static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
2342{
2343 struct inet6_dev *idev;
2344
2345 ASSERT_RTNL();
2346

--- 3210 unchanged lines hidden (view full) ---

5557 struct rt6_info *rt;
5558
5559 rt = addrconf_get_prefix_route(&ifp->peer_addr, 128,
5560 ifp->idev->dev, 0, 0);
5561 if (rt)
5562 ip6_del_rt(rt);
5563 }
5564 if (ifp->rt) {
2354}
2355
2356static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
2357{
2358 struct inet6_dev *idev;
2359
2360 ASSERT_RTNL();
2361

--- 3210 unchanged lines hidden (view full) ---

5572 struct rt6_info *rt;
5573
5574 rt = addrconf_get_prefix_route(&ifp->peer_addr, 128,
5575 ifp->idev->dev, 0, 0);
5576 if (rt)
5577 ip6_del_rt(rt);
5578 }
5579 if (ifp->rt) {
5565 dst_hold(&ifp->rt->dst);
5566 ip6_del_rt(ifp->rt);
5580 if (dst_hold_safe(&ifp->rt->dst))
5581 ip6_del_rt(ifp->rt);
5567 }
5568 rt_genid_bump_ipv6(net);
5569 break;
5570 }
5571 atomic_inc(&net->ipv6.dev_addr_genid);
5572}
5573
5574static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)

--- 1083 unchanged lines hidden --- 		5582 }
5583 rt_genid_bump_ipv6(net);
5584 break;
5585 }
5586 atomic_inc(&net->ipv6.dev_addr_genid);
5587}
5588
5589static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)

--- 1083 unchanged lines hidden ---