12a8cc6c8SYOSHIFUJI Hideaki /* 22a8cc6c8SYOSHIFUJI Hideaki * IPv6 Address Label subsystem 32a8cc6c8SYOSHIFUJI Hideaki * for the IPv6 "Default" Source Address Selection 42a8cc6c8SYOSHIFUJI Hideaki * 52a8cc6c8SYOSHIFUJI Hideaki * Copyright (C)2007 USAGI/WIDE Project 62a8cc6c8SYOSHIFUJI Hideaki */ 72a8cc6c8SYOSHIFUJI Hideaki /* 82a8cc6c8SYOSHIFUJI Hideaki * Author: 92a8cc6c8SYOSHIFUJI Hideaki * YOSHIFUJI Hideaki @ USAGI/WIDE Project <yoshfuji@linux-ipv6.org> 102a8cc6c8SYOSHIFUJI Hideaki */ 112a8cc6c8SYOSHIFUJI Hideaki 122a8cc6c8SYOSHIFUJI Hideaki #include <linux/kernel.h> 132a8cc6c8SYOSHIFUJI Hideaki #include <linux/list.h> 142a8cc6c8SYOSHIFUJI Hideaki #include <linux/rcupdate.h> 152a8cc6c8SYOSHIFUJI Hideaki #include <linux/in6.h> 165a0e3ad6STejun Heo #include <linux/slab.h> 172a8cc6c8SYOSHIFUJI Hideaki #include <net/addrconf.h> 182a8cc6c8SYOSHIFUJI Hideaki #include <linux/if_addrlabel.h> 192a8cc6c8SYOSHIFUJI Hideaki #include <linux/netlink.h> 202a8cc6c8SYOSHIFUJI Hideaki #include <linux/rtnetlink.h> 2187078f26SReshetova, Elena #include <linux/refcount.h> 222a8cc6c8SYOSHIFUJI Hideaki 232a8cc6c8SYOSHIFUJI Hideaki #if 0 242a8cc6c8SYOSHIFUJI Hideaki #define ADDRLABEL(x...) printk(x) 252a8cc6c8SYOSHIFUJI Hideaki #else 262a8cc6c8SYOSHIFUJI Hideaki #define ADDRLABEL(x...) do { ; } while (0) 272a8cc6c8SYOSHIFUJI Hideaki #endif 282a8cc6c8SYOSHIFUJI Hideaki 292a8cc6c8SYOSHIFUJI Hideaki /* 302a8cc6c8SYOSHIFUJI Hideaki * Policy Table 312a8cc6c8SYOSHIFUJI Hideaki */ 3222b285d6SWang Yufen struct ip6addrlbl_entry { 332a8cc6c8SYOSHIFUJI Hideaki struct in6_addr prefix; 342a8cc6c8SYOSHIFUJI Hideaki int prefixlen; 352a8cc6c8SYOSHIFUJI Hideaki int ifindex; 362a8cc6c8SYOSHIFUJI Hideaki int addrtype; 372a8cc6c8SYOSHIFUJI Hideaki u32 label; 382a8cc6c8SYOSHIFUJI Hideaki struct hlist_node list; 3987078f26SReshetova, Elena refcount_t refcnt; 402a8cc6c8SYOSHIFUJI Hideaki struct rcu_head rcu; 412a8cc6c8SYOSHIFUJI Hideaki }; 422a8cc6c8SYOSHIFUJI Hideaki 432a8cc6c8SYOSHIFUJI Hideaki /* 44417962a0SYOSHIFUJI Hideaki / 吉藤英明 * Default policy table (RFC6724 + extensions) 452a8cc6c8SYOSHIFUJI Hideaki * 462a8cc6c8SYOSHIFUJI Hideaki * prefix addr_type label 472a8cc6c8SYOSHIFUJI Hideaki * ------------------------------------------------------------------------- 482a8cc6c8SYOSHIFUJI Hideaki * ::1/128 LOOPBACK 0 492a8cc6c8SYOSHIFUJI Hideaki * ::/0 N/A 1 502a8cc6c8SYOSHIFUJI Hideaki * 2002::/16 N/A 2 512a8cc6c8SYOSHIFUJI Hideaki * ::/96 COMPATv4 3 522a8cc6c8SYOSHIFUJI Hideaki * ::ffff:0:0/96 V4MAPPED 4 532a8cc6c8SYOSHIFUJI Hideaki * fc00::/7 N/A 5 ULA (RFC 4193) 542a8cc6c8SYOSHIFUJI Hideaki * 2001::/32 N/A 6 Teredo (RFC 4380) 555fe47b8aSJuha-Matti Tapio * 2001:10::/28 N/A 7 ORCHID (RFC 4843) 56417962a0SYOSHIFUJI Hideaki / 吉藤英明 * fec0::/10 N/A 11 Site-local 57417962a0SYOSHIFUJI Hideaki / 吉藤英明 * (deprecated by RFC3879) 58417962a0SYOSHIFUJI Hideaki / 吉藤英明 * 3ffe::/16 N/A 12 6bone 592a8cc6c8SYOSHIFUJI Hideaki * 602a8cc6c8SYOSHIFUJI Hideaki * Note: 0xffffffff is used if we do not have any policies. 61417962a0SYOSHIFUJI Hideaki / 吉藤英明 * Note: Labels for ULA and 6to4 are different from labels listed in RFC6724. 622a8cc6c8SYOSHIFUJI Hideaki */ 632a8cc6c8SYOSHIFUJI Hideaki 642a8cc6c8SYOSHIFUJI Hideaki #define IPV6_ADDR_LABEL_DEFAULT 0xffffffffUL 652a8cc6c8SYOSHIFUJI Hideaki 6604a6f82cSAndi Kleen static const __net_initconst struct ip6addrlbl_init_table 672a8cc6c8SYOSHIFUJI Hideaki { 682a8cc6c8SYOSHIFUJI Hideaki const struct in6_addr *prefix; 692a8cc6c8SYOSHIFUJI Hideaki int prefixlen; 702a8cc6c8SYOSHIFUJI Hideaki u32 label; 712a8cc6c8SYOSHIFUJI Hideaki } ip6addrlbl_init_table[] = { 722a8cc6c8SYOSHIFUJI Hideaki { /* ::/0 */ 732a8cc6c8SYOSHIFUJI Hideaki .prefix = &in6addr_any, 742a8cc6c8SYOSHIFUJI Hideaki .label = 1, 752a8cc6c8SYOSHIFUJI Hideaki }, { /* fc00::/7 */ 762a8cc6c8SYOSHIFUJI Hideaki .prefix = &(struct in6_addr){ { { 0xfc } } } , 772a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 7, 782a8cc6c8SYOSHIFUJI Hideaki .label = 5, 79417962a0SYOSHIFUJI Hideaki / 吉藤英明 }, { /* fec0::/10 */ 80417962a0SYOSHIFUJI Hideaki / 吉藤英明 .prefix = &(struct in6_addr){ { { 0xfe, 0xc0 } } }, 81417962a0SYOSHIFUJI Hideaki / 吉藤英明 .prefixlen = 10, 82417962a0SYOSHIFUJI Hideaki / 吉藤英明 .label = 11, 832a8cc6c8SYOSHIFUJI Hideaki }, { /* 2002::/16 */ 842a8cc6c8SYOSHIFUJI Hideaki .prefix = &(struct in6_addr){ { { 0x20, 0x02 } } }, 852a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 16, 862a8cc6c8SYOSHIFUJI Hideaki .label = 2, 87417962a0SYOSHIFUJI Hideaki / 吉藤英明 }, { /* 3ffe::/16 */ 88417962a0SYOSHIFUJI Hideaki / 吉藤英明 .prefix = &(struct in6_addr){ { { 0x3f, 0xfe } } }, 89417962a0SYOSHIFUJI Hideaki / 吉藤英明 .prefixlen = 16, 90417962a0SYOSHIFUJI Hideaki / 吉藤英明 .label = 12, 912a8cc6c8SYOSHIFUJI Hideaki }, { /* 2001::/32 */ 922a8cc6c8SYOSHIFUJI Hideaki .prefix = &(struct in6_addr){ { { 0x20, 0x01 } } }, 932a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 32, 942a8cc6c8SYOSHIFUJI Hideaki .label = 6, 955fe47b8aSJuha-Matti Tapio }, { /* 2001:10::/28 */ 965fe47b8aSJuha-Matti Tapio .prefix = &(struct in6_addr){ { { 0x20, 0x01, 0x00, 0x10 } } }, 975fe47b8aSJuha-Matti Tapio .prefixlen = 28, 985fe47b8aSJuha-Matti Tapio .label = 7, 992a8cc6c8SYOSHIFUJI Hideaki }, { /* ::ffff:0:0 */ 1002a8cc6c8SYOSHIFUJI Hideaki .prefix = &(struct in6_addr){ { { [10] = 0xff, [11] = 0xff } } }, 1012a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 96, 1022a8cc6c8SYOSHIFUJI Hideaki .label = 4, 1032a8cc6c8SYOSHIFUJI Hideaki }, { /* ::/96 */ 1042a8cc6c8SYOSHIFUJI Hideaki .prefix = &in6addr_any, 1052a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 96, 1062a8cc6c8SYOSHIFUJI Hideaki .label = 3, 1072a8cc6c8SYOSHIFUJI Hideaki }, { /* ::1/128 */ 1082a8cc6c8SYOSHIFUJI Hideaki .prefix = &in6addr_loopback, 1092a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 128, 1102a8cc6c8SYOSHIFUJI Hideaki .label = 0, 1112a8cc6c8SYOSHIFUJI Hideaki } 1122a8cc6c8SYOSHIFUJI Hideaki }; 1132a8cc6c8SYOSHIFUJI Hideaki 1142a8cc6c8SYOSHIFUJI Hideaki /* Object management */ 1152a8cc6c8SYOSHIFUJI Hideaki static inline void ip6addrlbl_free(struct ip6addrlbl_entry *p) 1162a8cc6c8SYOSHIFUJI Hideaki { 1172a8cc6c8SYOSHIFUJI Hideaki kfree(p); 1182a8cc6c8SYOSHIFUJI Hideaki } 1192a8cc6c8SYOSHIFUJI Hideaki 12085040bcbSYOSHIFUJI Hideaki static void ip6addrlbl_free_rcu(struct rcu_head *h) 12185040bcbSYOSHIFUJI Hideaki { 12285040bcbSYOSHIFUJI Hideaki ip6addrlbl_free(container_of(h, struct ip6addrlbl_entry, rcu)); 12385040bcbSYOSHIFUJI Hideaki } 12485040bcbSYOSHIFUJI Hideaki 125a50feda5SEric Dumazet static bool ip6addrlbl_hold(struct ip6addrlbl_entry *p) 1262a8cc6c8SYOSHIFUJI Hideaki { 12787078f26SReshetova, Elena return refcount_inc_not_zero(&p->refcnt); 1282a8cc6c8SYOSHIFUJI Hideaki } 1292a8cc6c8SYOSHIFUJI Hideaki 1302a8cc6c8SYOSHIFUJI Hideaki static inline void ip6addrlbl_put(struct ip6addrlbl_entry *p) 1312a8cc6c8SYOSHIFUJI Hideaki { 13287078f26SReshetova, Elena if (refcount_dec_and_test(&p->refcnt)) 13385040bcbSYOSHIFUJI Hideaki call_rcu(&p->rcu, ip6addrlbl_free_rcu); 1342a8cc6c8SYOSHIFUJI Hideaki } 1352a8cc6c8SYOSHIFUJI Hideaki 1362a8cc6c8SYOSHIFUJI Hideaki /* Find label */ 137a90c9347SEric Dumazet static bool __ip6addrlbl_match(const struct ip6addrlbl_entry *p, 1382a8cc6c8SYOSHIFUJI Hideaki const struct in6_addr *addr, 1392a8cc6c8SYOSHIFUJI Hideaki int addrtype, int ifindex) 1402a8cc6c8SYOSHIFUJI Hideaki { 1412a8cc6c8SYOSHIFUJI Hideaki if (p->ifindex && p->ifindex != ifindex) 142a50feda5SEric Dumazet return false; 1432a8cc6c8SYOSHIFUJI Hideaki if (p->addrtype && p->addrtype != addrtype) 144a50feda5SEric Dumazet return false; 1452a8cc6c8SYOSHIFUJI Hideaki if (!ipv6_prefix_equal(addr, &p->prefix, p->prefixlen)) 146a50feda5SEric Dumazet return false; 147a50feda5SEric Dumazet return true; 1482a8cc6c8SYOSHIFUJI Hideaki } 1492a8cc6c8SYOSHIFUJI Hideaki 1503de23255SBenjamin Thery static struct ip6addrlbl_entry *__ipv6_addr_label(struct net *net, 1513de23255SBenjamin Thery const struct in6_addr *addr, 1522a8cc6c8SYOSHIFUJI Hideaki int type, int ifindex) 1532a8cc6c8SYOSHIFUJI Hideaki { 1542a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p; 155a90c9347SEric Dumazet 156a90c9347SEric Dumazet hlist_for_each_entry_rcu(p, &net->ipv6.ip6addrlbl_table.head, list) { 157a90c9347SEric Dumazet if (__ip6addrlbl_match(p, addr, type, ifindex)) 1582a8cc6c8SYOSHIFUJI Hideaki return p; 1592a8cc6c8SYOSHIFUJI Hideaki } 1602a8cc6c8SYOSHIFUJI Hideaki return NULL; 1612a8cc6c8SYOSHIFUJI Hideaki } 1622a8cc6c8SYOSHIFUJI Hideaki 1633de23255SBenjamin Thery u32 ipv6_addr_label(struct net *net, 1643de23255SBenjamin Thery const struct in6_addr *addr, int type, int ifindex) 1652a8cc6c8SYOSHIFUJI Hideaki { 1662a8cc6c8SYOSHIFUJI Hideaki u32 label; 1672a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p; 1682a8cc6c8SYOSHIFUJI Hideaki 1692a8cc6c8SYOSHIFUJI Hideaki type &= IPV6_ADDR_MAPPED | IPV6_ADDR_COMPATv4 | IPV6_ADDR_LOOPBACK; 1702a8cc6c8SYOSHIFUJI Hideaki 1712a8cc6c8SYOSHIFUJI Hideaki rcu_read_lock(); 1723de23255SBenjamin Thery p = __ipv6_addr_label(net, addr, type, ifindex); 1732a8cc6c8SYOSHIFUJI Hideaki label = p ? p->label : IPV6_ADDR_LABEL_DEFAULT; 1742a8cc6c8SYOSHIFUJI Hideaki rcu_read_unlock(); 1752a8cc6c8SYOSHIFUJI Hideaki 1765b095d98SHarvey Harrison ADDRLABEL(KERN_DEBUG "%s(addr=%pI6, type=%d, ifindex=%d) => %08x\n", 1770c6ce78aSHarvey Harrison __func__, addr, type, ifindex, label); 1782a8cc6c8SYOSHIFUJI Hideaki 1792a8cc6c8SYOSHIFUJI Hideaki return label; 1802a8cc6c8SYOSHIFUJI Hideaki } 1812a8cc6c8SYOSHIFUJI Hideaki 1822a8cc6c8SYOSHIFUJI Hideaki /* allocate one entry */ 183a90c9347SEric Dumazet static struct ip6addrlbl_entry *ip6addrlbl_alloc(const struct in6_addr *prefix, 1842a8cc6c8SYOSHIFUJI Hideaki int prefixlen, int ifindex, 1852a8cc6c8SYOSHIFUJI Hideaki u32 label) 1862a8cc6c8SYOSHIFUJI Hideaki { 1872a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *newp; 1882a8cc6c8SYOSHIFUJI Hideaki int addrtype; 1892a8cc6c8SYOSHIFUJI Hideaki 1905b095d98SHarvey Harrison ADDRLABEL(KERN_DEBUG "%s(prefix=%pI6, prefixlen=%d, ifindex=%d, label=%u)\n", 1910c6ce78aSHarvey Harrison __func__, prefix, prefixlen, ifindex, (unsigned int)label); 1922a8cc6c8SYOSHIFUJI Hideaki 1932a8cc6c8SYOSHIFUJI Hideaki addrtype = ipv6_addr_type(prefix) & (IPV6_ADDR_MAPPED | IPV6_ADDR_COMPATv4 | IPV6_ADDR_LOOPBACK); 1942a8cc6c8SYOSHIFUJI Hideaki 1952a8cc6c8SYOSHIFUJI Hideaki switch (addrtype) { 1962a8cc6c8SYOSHIFUJI Hideaki case IPV6_ADDR_MAPPED: 1972a8cc6c8SYOSHIFUJI Hideaki if (prefixlen > 96) 1982a8cc6c8SYOSHIFUJI Hideaki return ERR_PTR(-EINVAL); 1992a8cc6c8SYOSHIFUJI Hideaki if (prefixlen < 96) 2002a8cc6c8SYOSHIFUJI Hideaki addrtype = 0; 2012a8cc6c8SYOSHIFUJI Hideaki break; 2022a8cc6c8SYOSHIFUJI Hideaki case IPV6_ADDR_COMPATv4: 2032a8cc6c8SYOSHIFUJI Hideaki if (prefixlen != 96) 2042a8cc6c8SYOSHIFUJI Hideaki addrtype = 0; 2052a8cc6c8SYOSHIFUJI Hideaki break; 2062a8cc6c8SYOSHIFUJI Hideaki case IPV6_ADDR_LOOPBACK: 2072a8cc6c8SYOSHIFUJI Hideaki if (prefixlen != 128) 2082a8cc6c8SYOSHIFUJI Hideaki addrtype = 0; 2092a8cc6c8SYOSHIFUJI Hideaki break; 2102a8cc6c8SYOSHIFUJI Hideaki } 2112a8cc6c8SYOSHIFUJI Hideaki 2122a8cc6c8SYOSHIFUJI Hideaki newp = kmalloc(sizeof(*newp), GFP_KERNEL); 2132a8cc6c8SYOSHIFUJI Hideaki if (!newp) 2142a8cc6c8SYOSHIFUJI Hideaki return ERR_PTR(-ENOMEM); 2152a8cc6c8SYOSHIFUJI Hideaki 2162a8cc6c8SYOSHIFUJI Hideaki ipv6_addr_prefix(&newp->prefix, prefix, prefixlen); 2172a8cc6c8SYOSHIFUJI Hideaki newp->prefixlen = prefixlen; 2182a8cc6c8SYOSHIFUJI Hideaki newp->ifindex = ifindex; 2192a8cc6c8SYOSHIFUJI Hideaki newp->addrtype = addrtype; 2202a8cc6c8SYOSHIFUJI Hideaki newp->label = label; 2212a8cc6c8SYOSHIFUJI Hideaki INIT_HLIST_NODE(&newp->list); 22287078f26SReshetova, Elena refcount_set(&newp->refcnt, 1); 2232a8cc6c8SYOSHIFUJI Hideaki return newp; 2242a8cc6c8SYOSHIFUJI Hideaki } 2252a8cc6c8SYOSHIFUJI Hideaki 2262a8cc6c8SYOSHIFUJI Hideaki /* add a label */ 227a90c9347SEric Dumazet static int __ip6addrlbl_add(struct net *net, struct ip6addrlbl_entry *newp, 228a90c9347SEric Dumazet int replace) 2292a8cc6c8SYOSHIFUJI Hideaki { 230639739b5SHannes Frederic Sowa struct ip6addrlbl_entry *last = NULL, *p = NULL; 231a90c9347SEric Dumazet struct hlist_node *n; 2322a8cc6c8SYOSHIFUJI Hideaki int ret = 0; 2332a8cc6c8SYOSHIFUJI Hideaki 234639739b5SHannes Frederic Sowa ADDRLABEL(KERN_DEBUG "%s(newp=%p, replace=%d)\n", __func__, newp, 235639739b5SHannes Frederic Sowa replace); 2362a8cc6c8SYOSHIFUJI Hideaki 237a90c9347SEric Dumazet hlist_for_each_entry_safe(p, n, &net->ipv6.ip6addrlbl_table.head, list) { 2382a8cc6c8SYOSHIFUJI Hideaki if (p->prefixlen == newp->prefixlen && 2392a8cc6c8SYOSHIFUJI Hideaki p->ifindex == newp->ifindex && 2402a8cc6c8SYOSHIFUJI Hideaki ipv6_addr_equal(&p->prefix, &newp->prefix)) { 2412a8cc6c8SYOSHIFUJI Hideaki if (!replace) { 2422a8cc6c8SYOSHIFUJI Hideaki ret = -EEXIST; 2432a8cc6c8SYOSHIFUJI Hideaki goto out; 2442a8cc6c8SYOSHIFUJI Hideaki } 2452a8cc6c8SYOSHIFUJI Hideaki hlist_replace_rcu(&p->list, &newp->list); 2462a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_put(p); 2472a8cc6c8SYOSHIFUJI Hideaki goto out; 2482a8cc6c8SYOSHIFUJI Hideaki } else if ((p->prefixlen == newp->prefixlen && !p->ifindex) || 2492a8cc6c8SYOSHIFUJI Hideaki (p->prefixlen < newp->prefixlen)) { 2502a8cc6c8SYOSHIFUJI Hideaki hlist_add_before_rcu(&newp->list, &p->list); 2512a8cc6c8SYOSHIFUJI Hideaki goto out; 2522a8cc6c8SYOSHIFUJI Hideaki } 253639739b5SHannes Frederic Sowa last = p; 2542a8cc6c8SYOSHIFUJI Hideaki } 255639739b5SHannes Frederic Sowa if (last) 2561d023284SKen Helias hlist_add_behind_rcu(&newp->list, &last->list); 257639739b5SHannes Frederic Sowa else 258a90c9347SEric Dumazet hlist_add_head_rcu(&newp->list, &net->ipv6.ip6addrlbl_table.head); 2592a8cc6c8SYOSHIFUJI Hideaki out: 2602a8cc6c8SYOSHIFUJI Hideaki if (!ret) 261a90c9347SEric Dumazet net->ipv6.ip6addrlbl_table.seq++; 2622a8cc6c8SYOSHIFUJI Hideaki return ret; 2632a8cc6c8SYOSHIFUJI Hideaki } 2642a8cc6c8SYOSHIFUJI Hideaki 2652a8cc6c8SYOSHIFUJI Hideaki /* add a label */ 2663de23255SBenjamin Thery static int ip6addrlbl_add(struct net *net, 2673de23255SBenjamin Thery const struct in6_addr *prefix, int prefixlen, 2682a8cc6c8SYOSHIFUJI Hideaki int ifindex, u32 label, int replace) 2692a8cc6c8SYOSHIFUJI Hideaki { 2702a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *newp; 2712a8cc6c8SYOSHIFUJI Hideaki int ret = 0; 2722a8cc6c8SYOSHIFUJI Hideaki 2735b095d98SHarvey Harrison ADDRLABEL(KERN_DEBUG "%s(prefix=%pI6, prefixlen=%d, ifindex=%d, label=%u, replace=%d)\n", 2740c6ce78aSHarvey Harrison __func__, prefix, prefixlen, ifindex, (unsigned int)label, 2752a8cc6c8SYOSHIFUJI Hideaki replace); 2762a8cc6c8SYOSHIFUJI Hideaki 277a90c9347SEric Dumazet newp = ip6addrlbl_alloc(prefix, prefixlen, ifindex, label); 2782a8cc6c8SYOSHIFUJI Hideaki if (IS_ERR(newp)) 2792a8cc6c8SYOSHIFUJI Hideaki return PTR_ERR(newp); 280a90c9347SEric Dumazet spin_lock(&net->ipv6.ip6addrlbl_table.lock); 281a90c9347SEric Dumazet ret = __ip6addrlbl_add(net, newp, replace); 282a90c9347SEric Dumazet spin_unlock(&net->ipv6.ip6addrlbl_table.lock); 2832a8cc6c8SYOSHIFUJI Hideaki if (ret) 2842a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_free(newp); 2852a8cc6c8SYOSHIFUJI Hideaki return ret; 2862a8cc6c8SYOSHIFUJI Hideaki } 2872a8cc6c8SYOSHIFUJI Hideaki 2882a8cc6c8SYOSHIFUJI Hideaki /* remove a label */ 2893de23255SBenjamin Thery static int __ip6addrlbl_del(struct net *net, 2903de23255SBenjamin Thery const struct in6_addr *prefix, int prefixlen, 2912a8cc6c8SYOSHIFUJI Hideaki int ifindex) 2922a8cc6c8SYOSHIFUJI Hideaki { 2932a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p = NULL; 294b67bfe0dSSasha Levin struct hlist_node *n; 2952a8cc6c8SYOSHIFUJI Hideaki int ret = -ESRCH; 2962a8cc6c8SYOSHIFUJI Hideaki 2975b095d98SHarvey Harrison ADDRLABEL(KERN_DEBUG "%s(prefix=%pI6, prefixlen=%d, ifindex=%d)\n", 2980c6ce78aSHarvey Harrison __func__, prefix, prefixlen, ifindex); 2992a8cc6c8SYOSHIFUJI Hideaki 300a90c9347SEric Dumazet hlist_for_each_entry_safe(p, n, &net->ipv6.ip6addrlbl_table.head, list) { 3012a8cc6c8SYOSHIFUJI Hideaki if (p->prefixlen == prefixlen && 3022a8cc6c8SYOSHIFUJI Hideaki p->ifindex == ifindex && 3032a8cc6c8SYOSHIFUJI Hideaki ipv6_addr_equal(&p->prefix, prefix)) { 3042a8cc6c8SYOSHIFUJI Hideaki hlist_del_rcu(&p->list); 3052a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_put(p); 3062a8cc6c8SYOSHIFUJI Hideaki ret = 0; 3072a8cc6c8SYOSHIFUJI Hideaki break; 3082a8cc6c8SYOSHIFUJI Hideaki } 3092a8cc6c8SYOSHIFUJI Hideaki } 3102a8cc6c8SYOSHIFUJI Hideaki return ret; 3112a8cc6c8SYOSHIFUJI Hideaki } 3122a8cc6c8SYOSHIFUJI Hideaki 3133de23255SBenjamin Thery static int ip6addrlbl_del(struct net *net, 3143de23255SBenjamin Thery const struct in6_addr *prefix, int prefixlen, 3152a8cc6c8SYOSHIFUJI Hideaki int ifindex) 3162a8cc6c8SYOSHIFUJI Hideaki { 3172a8cc6c8SYOSHIFUJI Hideaki struct in6_addr prefix_buf; 3182a8cc6c8SYOSHIFUJI Hideaki int ret; 3192a8cc6c8SYOSHIFUJI Hideaki 3205b095d98SHarvey Harrison ADDRLABEL(KERN_DEBUG "%s(prefix=%pI6, prefixlen=%d, ifindex=%d)\n", 3210c6ce78aSHarvey Harrison __func__, prefix, prefixlen, ifindex); 3222a8cc6c8SYOSHIFUJI Hideaki 3232a8cc6c8SYOSHIFUJI Hideaki ipv6_addr_prefix(&prefix_buf, prefix, prefixlen); 324a90c9347SEric Dumazet spin_lock(&net->ipv6.ip6addrlbl_table.lock); 3253de23255SBenjamin Thery ret = __ip6addrlbl_del(net, &prefix_buf, prefixlen, ifindex); 326a90c9347SEric Dumazet spin_unlock(&net->ipv6.ip6addrlbl_table.lock); 3272a8cc6c8SYOSHIFUJI Hideaki return ret; 3282a8cc6c8SYOSHIFUJI Hideaki } 3292a8cc6c8SYOSHIFUJI Hideaki 3302a8cc6c8SYOSHIFUJI Hideaki /* add default label */ 3313de23255SBenjamin Thery static int __net_init ip6addrlbl_net_init(struct net *net) 3322a8cc6c8SYOSHIFUJI Hideaki { 3332a8cc6c8SYOSHIFUJI Hideaki int err = 0; 3342a8cc6c8SYOSHIFUJI Hideaki int i; 3352a8cc6c8SYOSHIFUJI Hideaki 336f3213831SJoe Perches ADDRLABEL(KERN_DEBUG "%s\n", __func__); 3372a8cc6c8SYOSHIFUJI Hideaki 338a90c9347SEric Dumazet spin_lock_init(&net->ipv6.ip6addrlbl_table.lock); 339a90c9347SEric Dumazet INIT_HLIST_HEAD(&net->ipv6.ip6addrlbl_table.head); 340a90c9347SEric Dumazet 3412a8cc6c8SYOSHIFUJI Hideaki for (i = 0; i < ARRAY_SIZE(ip6addrlbl_init_table); i++) { 3423de23255SBenjamin Thery int ret = ip6addrlbl_add(net, 3433de23255SBenjamin Thery ip6addrlbl_init_table[i].prefix, 3442a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_init_table[i].prefixlen, 3452a8cc6c8SYOSHIFUJI Hideaki 0, 3462a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_init_table[i].label, 0); 3472a8cc6c8SYOSHIFUJI Hideaki /* XXX: should we free all rules when we catch an error? */ 3482a8cc6c8SYOSHIFUJI Hideaki if (ret && (!err || err != -ENOMEM)) 3492a8cc6c8SYOSHIFUJI Hideaki err = ret; 3502a8cc6c8SYOSHIFUJI Hideaki } 3512a8cc6c8SYOSHIFUJI Hideaki return err; 3522a8cc6c8SYOSHIFUJI Hideaki } 3532a8cc6c8SYOSHIFUJI Hideaki 3543de23255SBenjamin Thery static void __net_exit ip6addrlbl_net_exit(struct net *net) 3553de23255SBenjamin Thery { 3563de23255SBenjamin Thery struct ip6addrlbl_entry *p = NULL; 357b67bfe0dSSasha Levin struct hlist_node *n; 3583de23255SBenjamin Thery 3593de23255SBenjamin Thery /* Remove all labels belonging to the exiting net */ 360a90c9347SEric Dumazet spin_lock(&net->ipv6.ip6addrlbl_table.lock); 361a90c9347SEric Dumazet hlist_for_each_entry_safe(p, n, &net->ipv6.ip6addrlbl_table.head, list) { 3623de23255SBenjamin Thery hlist_del_rcu(&p->list); 3633de23255SBenjamin Thery ip6addrlbl_put(p); 3643de23255SBenjamin Thery } 365a90c9347SEric Dumazet spin_unlock(&net->ipv6.ip6addrlbl_table.lock); 3663de23255SBenjamin Thery } 3673de23255SBenjamin Thery 3683de23255SBenjamin Thery static struct pernet_operations ipv6_addr_label_ops = { 3693de23255SBenjamin Thery .init = ip6addrlbl_net_init, 3703de23255SBenjamin Thery .exit = ip6addrlbl_net_exit, 3713de23255SBenjamin Thery }; 3723de23255SBenjamin Thery 3732a8cc6c8SYOSHIFUJI Hideaki int __init ipv6_addr_label_init(void) 3742a8cc6c8SYOSHIFUJI Hideaki { 3753de23255SBenjamin Thery return register_pernet_subsys(&ipv6_addr_label_ops); 3762a8cc6c8SYOSHIFUJI Hideaki } 3772a8cc6c8SYOSHIFUJI Hideaki 3782cc6d2bfSNeil Horman void ipv6_addr_label_cleanup(void) 3792cc6d2bfSNeil Horman { 3802cc6d2bfSNeil Horman unregister_pernet_subsys(&ipv6_addr_label_ops); 3812cc6d2bfSNeil Horman } 3822cc6d2bfSNeil Horman 3832a8cc6c8SYOSHIFUJI Hideaki static const struct nla_policy ifal_policy[IFAL_MAX+1] = { 3842a8cc6c8SYOSHIFUJI Hideaki [IFAL_ADDRESS] = { .len = sizeof(struct in6_addr), }, 3852a8cc6c8SYOSHIFUJI Hideaki [IFAL_LABEL] = { .len = sizeof(u32), }, 3862a8cc6c8SYOSHIFUJI Hideaki }; 3872a8cc6c8SYOSHIFUJI Hideaki 388a6f57028SFlorian Westphal static bool addrlbl_ifindex_exists(struct net *net, int ifindex) 389a6f57028SFlorian Westphal { 390a6f57028SFlorian Westphal 391a6f57028SFlorian Westphal struct net_device *dev; 392a6f57028SFlorian Westphal 393a6f57028SFlorian Westphal rcu_read_lock(); 394a6f57028SFlorian Westphal dev = dev_get_by_index_rcu(net, ifindex); 395a6f57028SFlorian Westphal rcu_read_unlock(); 396a6f57028SFlorian Westphal 397a6f57028SFlorian Westphal return dev != NULL; 398a6f57028SFlorian Westphal } 399a6f57028SFlorian Westphal 400c21ef3e3SDavid Ahern static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh, 401c21ef3e3SDavid Ahern struct netlink_ext_ack *extack) 4022a8cc6c8SYOSHIFUJI Hideaki { 4033b1e0a65SYOSHIFUJI Hideaki struct net *net = sock_net(skb->sk); 4042a8cc6c8SYOSHIFUJI Hideaki struct ifaddrlblmsg *ifal; 4052a8cc6c8SYOSHIFUJI Hideaki struct nlattr *tb[IFAL_MAX+1]; 4062a8cc6c8SYOSHIFUJI Hideaki struct in6_addr *pfx; 4072a8cc6c8SYOSHIFUJI Hideaki u32 label; 4082a8cc6c8SYOSHIFUJI Hideaki int err = 0; 4092a8cc6c8SYOSHIFUJI Hideaki 410c21ef3e3SDavid Ahern err = nlmsg_parse(nlh, sizeof(*ifal), tb, IFAL_MAX, ifal_policy, 411c21ef3e3SDavid Ahern extack); 4122a8cc6c8SYOSHIFUJI Hideaki if (err < 0) 4132a8cc6c8SYOSHIFUJI Hideaki return err; 4142a8cc6c8SYOSHIFUJI Hideaki 4152a8cc6c8SYOSHIFUJI Hideaki ifal = nlmsg_data(nlh); 4162a8cc6c8SYOSHIFUJI Hideaki 4172a8cc6c8SYOSHIFUJI Hideaki if (ifal->ifal_family != AF_INET6 || 4182a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_prefixlen > 128) 4192a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 4202a8cc6c8SYOSHIFUJI Hideaki 4212a8cc6c8SYOSHIFUJI Hideaki if (!tb[IFAL_ADDRESS]) 4222a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 4232a8cc6c8SYOSHIFUJI Hideaki pfx = nla_data(tb[IFAL_ADDRESS]); 4242a8cc6c8SYOSHIFUJI Hideaki 4252a8cc6c8SYOSHIFUJI Hideaki if (!tb[IFAL_LABEL]) 4262a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 4272a8cc6c8SYOSHIFUJI Hideaki label = nla_get_u32(tb[IFAL_LABEL]); 4282a8cc6c8SYOSHIFUJI Hideaki if (label == IPV6_ADDR_LABEL_DEFAULT) 4292a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 4302a8cc6c8SYOSHIFUJI Hideaki 4312a8cc6c8SYOSHIFUJI Hideaki switch (nlh->nlmsg_type) { 4322a8cc6c8SYOSHIFUJI Hideaki case RTM_NEWADDRLABEL: 4330771275bSFlorian Westphal if (ifal->ifal_index && 434a6f57028SFlorian Westphal !addrlbl_ifindex_exists(net, ifal->ifal_index)) 4350771275bSFlorian Westphal return -EINVAL; 4360771275bSFlorian Westphal 4373de23255SBenjamin Thery err = ip6addrlbl_add(net, pfx, ifal->ifal_prefixlen, 4382a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_index, label, 4392a8cc6c8SYOSHIFUJI Hideaki nlh->nlmsg_flags & NLM_F_REPLACE); 4402a8cc6c8SYOSHIFUJI Hideaki break; 4412a8cc6c8SYOSHIFUJI Hideaki case RTM_DELADDRLABEL: 4423de23255SBenjamin Thery err = ip6addrlbl_del(net, pfx, ifal->ifal_prefixlen, 4432a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_index); 4442a8cc6c8SYOSHIFUJI Hideaki break; 4452a8cc6c8SYOSHIFUJI Hideaki default: 4462a8cc6c8SYOSHIFUJI Hideaki err = -EOPNOTSUPP; 4472a8cc6c8SYOSHIFUJI Hideaki } 4482a8cc6c8SYOSHIFUJI Hideaki return err; 4492a8cc6c8SYOSHIFUJI Hideaki } 4502a8cc6c8SYOSHIFUJI Hideaki 451a50feda5SEric Dumazet static void ip6addrlbl_putmsg(struct nlmsghdr *nlh, 4522a8cc6c8SYOSHIFUJI Hideaki int prefixlen, int ifindex, u32 lseq) 4532a8cc6c8SYOSHIFUJI Hideaki { 4542a8cc6c8SYOSHIFUJI Hideaki struct ifaddrlblmsg *ifal = nlmsg_data(nlh); 4552a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_family = AF_INET6; 4562a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_prefixlen = prefixlen; 4572a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_flags = 0; 4582a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_index = ifindex; 4592a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_seq = lseq; 4602a8cc6c8SYOSHIFUJI Hideaki }; 4612a8cc6c8SYOSHIFUJI Hideaki 4622a8cc6c8SYOSHIFUJI Hideaki static int ip6addrlbl_fill(struct sk_buff *skb, 4632a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p, 4642a8cc6c8SYOSHIFUJI Hideaki u32 lseq, 46515e47304SEric W. Biederman u32 portid, u32 seq, int event, 4662a8cc6c8SYOSHIFUJI Hideaki unsigned int flags) 4672a8cc6c8SYOSHIFUJI Hideaki { 46815e47304SEric W. Biederman struct nlmsghdr *nlh = nlmsg_put(skb, portid, seq, event, 4692a8cc6c8SYOSHIFUJI Hideaki sizeof(struct ifaddrlblmsg), flags); 4702a8cc6c8SYOSHIFUJI Hideaki if (!nlh) 4712a8cc6c8SYOSHIFUJI Hideaki return -EMSGSIZE; 4722a8cc6c8SYOSHIFUJI Hideaki 4732a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_putmsg(nlh, p->prefixlen, p->ifindex, lseq); 4742a8cc6c8SYOSHIFUJI Hideaki 475930345eaSJiri Benc if (nla_put_in6_addr(skb, IFAL_ADDRESS, &p->prefix) < 0 || 4762a8cc6c8SYOSHIFUJI Hideaki nla_put_u32(skb, IFAL_LABEL, p->label) < 0) { 4772a8cc6c8SYOSHIFUJI Hideaki nlmsg_cancel(skb, nlh); 4782a8cc6c8SYOSHIFUJI Hideaki return -EMSGSIZE; 4792a8cc6c8SYOSHIFUJI Hideaki } 4802a8cc6c8SYOSHIFUJI Hideaki 481053c095aSJohannes Berg nlmsg_end(skb, nlh); 482053c095aSJohannes Berg return 0; 4832a8cc6c8SYOSHIFUJI Hideaki } 4842a8cc6c8SYOSHIFUJI Hideaki 4852a8cc6c8SYOSHIFUJI Hideaki static int ip6addrlbl_dump(struct sk_buff *skb, struct netlink_callback *cb) 4862a8cc6c8SYOSHIFUJI Hideaki { 4873b1e0a65SYOSHIFUJI Hideaki struct net *net = sock_net(skb->sk); 4882a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p; 4892a8cc6c8SYOSHIFUJI Hideaki int idx = 0, s_idx = cb->args[0]; 4902a8cc6c8SYOSHIFUJI Hideaki int err; 4912a8cc6c8SYOSHIFUJI Hideaki 4922a8cc6c8SYOSHIFUJI Hideaki rcu_read_lock(); 493a90c9347SEric Dumazet hlist_for_each_entry_rcu(p, &net->ipv6.ip6addrlbl_table.head, list) { 494a90c9347SEric Dumazet if (idx >= s_idx) { 495cb6e926eSWang Yufen err = ip6addrlbl_fill(skb, p, 496a90c9347SEric Dumazet net->ipv6.ip6addrlbl_table.seq, 49715e47304SEric W. Biederman NETLINK_CB(cb->skb).portid, 4982a8cc6c8SYOSHIFUJI Hideaki cb->nlh->nlmsg_seq, 4992a8cc6c8SYOSHIFUJI Hideaki RTM_NEWADDRLABEL, 500cb6e926eSWang Yufen NLM_F_MULTI); 501053c095aSJohannes Berg if (err < 0) 5022a8cc6c8SYOSHIFUJI Hideaki break; 5032a8cc6c8SYOSHIFUJI Hideaki } 5042a8cc6c8SYOSHIFUJI Hideaki idx++; 5052a8cc6c8SYOSHIFUJI Hideaki } 5062a8cc6c8SYOSHIFUJI Hideaki rcu_read_unlock(); 5072a8cc6c8SYOSHIFUJI Hideaki cb->args[0] = idx; 5082a8cc6c8SYOSHIFUJI Hideaki return skb->len; 5092a8cc6c8SYOSHIFUJI Hideaki } 5102a8cc6c8SYOSHIFUJI Hideaki 5112a8cc6c8SYOSHIFUJI Hideaki static inline int ip6addrlbl_msgsize(void) 5122a8cc6c8SYOSHIFUJI Hideaki { 513a02cec21SEric Dumazet return NLMSG_ALIGN(sizeof(struct ifaddrlblmsg)) 5142a8cc6c8SYOSHIFUJI Hideaki + nla_total_size(16) /* IFAL_ADDRESS */ 515a02cec21SEric Dumazet + nla_total_size(4); /* IFAL_LABEL */ 5162a8cc6c8SYOSHIFUJI Hideaki } 5172a8cc6c8SYOSHIFUJI Hideaki 518c21ef3e3SDavid Ahern static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr *nlh, 519c21ef3e3SDavid Ahern struct netlink_ext_ack *extack) 5202a8cc6c8SYOSHIFUJI Hideaki { 5213b1e0a65SYOSHIFUJI Hideaki struct net *net = sock_net(in_skb->sk); 5222a8cc6c8SYOSHIFUJI Hideaki struct ifaddrlblmsg *ifal; 5232a8cc6c8SYOSHIFUJI Hideaki struct nlattr *tb[IFAL_MAX+1]; 5242a8cc6c8SYOSHIFUJI Hideaki struct in6_addr *addr; 5252a8cc6c8SYOSHIFUJI Hideaki u32 lseq; 5262a8cc6c8SYOSHIFUJI Hideaki int err = 0; 5272a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p; 5282a8cc6c8SYOSHIFUJI Hideaki struct sk_buff *skb; 5292a8cc6c8SYOSHIFUJI Hideaki 530c21ef3e3SDavid Ahern err = nlmsg_parse(nlh, sizeof(*ifal), tb, IFAL_MAX, ifal_policy, 531c21ef3e3SDavid Ahern extack); 5322a8cc6c8SYOSHIFUJI Hideaki if (err < 0) 5332a8cc6c8SYOSHIFUJI Hideaki return err; 5342a8cc6c8SYOSHIFUJI Hideaki 5352a8cc6c8SYOSHIFUJI Hideaki ifal = nlmsg_data(nlh); 5362a8cc6c8SYOSHIFUJI Hideaki 5372a8cc6c8SYOSHIFUJI Hideaki if (ifal->ifal_family != AF_INET6 || 5382a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_prefixlen != 128) 5392a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 5402a8cc6c8SYOSHIFUJI Hideaki 5412a8cc6c8SYOSHIFUJI Hideaki if (ifal->ifal_index && 542a6f57028SFlorian Westphal !addrlbl_ifindex_exists(net, ifal->ifal_index)) 5432a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 5442a8cc6c8SYOSHIFUJI Hideaki 5452a8cc6c8SYOSHIFUJI Hideaki if (!tb[IFAL_ADDRESS]) 5462a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 5472a8cc6c8SYOSHIFUJI Hideaki addr = nla_data(tb[IFAL_ADDRESS]); 5482a8cc6c8SYOSHIFUJI Hideaki 5492a8cc6c8SYOSHIFUJI Hideaki rcu_read_lock(); 5503de23255SBenjamin Thery p = __ipv6_addr_label(net, addr, ipv6_addr_type(addr), ifal->ifal_index); 551e459dfeeSAndrey Ryabinin if (p && !ip6addrlbl_hold(p)) 5522a8cc6c8SYOSHIFUJI Hideaki p = NULL; 553a90c9347SEric Dumazet lseq = net->ipv6.ip6addrlbl_table.seq; 5542a8cc6c8SYOSHIFUJI Hideaki rcu_read_unlock(); 5552a8cc6c8SYOSHIFUJI Hideaki 5562a8cc6c8SYOSHIFUJI Hideaki if (!p) { 5572a8cc6c8SYOSHIFUJI Hideaki err = -ESRCH; 5582a8cc6c8SYOSHIFUJI Hideaki goto out; 5592a8cc6c8SYOSHIFUJI Hideaki } 5602a8cc6c8SYOSHIFUJI Hideaki 561cb6e926eSWang Yufen skb = nlmsg_new(ip6addrlbl_msgsize(), GFP_KERNEL); 562cb6e926eSWang Yufen if (!skb) { 5632a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_put(p); 5642a8cc6c8SYOSHIFUJI Hideaki return -ENOBUFS; 5652a8cc6c8SYOSHIFUJI Hideaki } 5662a8cc6c8SYOSHIFUJI Hideaki 5672a8cc6c8SYOSHIFUJI Hideaki err = ip6addrlbl_fill(skb, p, lseq, 56815e47304SEric W. Biederman NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, 5692a8cc6c8SYOSHIFUJI Hideaki RTM_NEWADDRLABEL, 0); 5702a8cc6c8SYOSHIFUJI Hideaki 5712a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_put(p); 5722a8cc6c8SYOSHIFUJI Hideaki 5732a8cc6c8SYOSHIFUJI Hideaki if (err < 0) { 5742a8cc6c8SYOSHIFUJI Hideaki WARN_ON(err == -EMSGSIZE); 5752a8cc6c8SYOSHIFUJI Hideaki kfree_skb(skb); 5762a8cc6c8SYOSHIFUJI Hideaki goto out; 5772a8cc6c8SYOSHIFUJI Hideaki } 5782a8cc6c8SYOSHIFUJI Hideaki 57915e47304SEric W. Biederman err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid); 5802a8cc6c8SYOSHIFUJI Hideaki out: 5812a8cc6c8SYOSHIFUJI Hideaki return err; 5822a8cc6c8SYOSHIFUJI Hideaki } 5832a8cc6c8SYOSHIFUJI Hideaki 5842a8cc6c8SYOSHIFUJI Hideaki void __init ipv6_addr_label_rtnl_register(void) 5852a8cc6c8SYOSHIFUJI Hideaki { 586c7ac8679SGreg Rose __rtnl_register(PF_INET6, RTM_NEWADDRLABEL, ip6addrlbl_newdel, 587a6f57028SFlorian Westphal NULL, RTNL_FLAG_DOIT_UNLOCKED); 588c7ac8679SGreg Rose __rtnl_register(PF_INET6, RTM_DELADDRLABEL, ip6addrlbl_newdel, 589a6f57028SFlorian Westphal NULL, RTNL_FLAG_DOIT_UNLOCKED); 590c7ac8679SGreg Rose __rtnl_register(PF_INET6, RTM_GETADDRLABEL, ip6addrlbl_get, 591a6f57028SFlorian Westphal ip6addrlbl_dump, RTNL_FLAG_DOIT_UNLOCKED); 5922a8cc6c8SYOSHIFUJI Hideaki } 5932a8cc6c8SYOSHIFUJI Hideaki 594