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> 162a8cc6c8SYOSHIFUJI Hideaki #include <net/addrconf.h> 172a8cc6c8SYOSHIFUJI Hideaki #include <linux/if_addrlabel.h> 182a8cc6c8SYOSHIFUJI Hideaki #include <linux/netlink.h> 192a8cc6c8SYOSHIFUJI Hideaki #include <linux/rtnetlink.h> 202a8cc6c8SYOSHIFUJI Hideaki 212a8cc6c8SYOSHIFUJI Hideaki #if 0 222a8cc6c8SYOSHIFUJI Hideaki #define ADDRLABEL(x...) printk(x) 232a8cc6c8SYOSHIFUJI Hideaki #else 242a8cc6c8SYOSHIFUJI Hideaki #define ADDRLABEL(x...) do { ; } while(0) 252a8cc6c8SYOSHIFUJI Hideaki #endif 262a8cc6c8SYOSHIFUJI Hideaki 272a8cc6c8SYOSHIFUJI Hideaki /* 282a8cc6c8SYOSHIFUJI Hideaki * Policy Table 292a8cc6c8SYOSHIFUJI Hideaki */ 302a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry 312a8cc6c8SYOSHIFUJI Hideaki { 322a8cc6c8SYOSHIFUJI Hideaki struct in6_addr prefix; 332a8cc6c8SYOSHIFUJI Hideaki int prefixlen; 342a8cc6c8SYOSHIFUJI Hideaki int ifindex; 352a8cc6c8SYOSHIFUJI Hideaki int addrtype; 362a8cc6c8SYOSHIFUJI Hideaki u32 label; 372a8cc6c8SYOSHIFUJI Hideaki struct hlist_node list; 382a8cc6c8SYOSHIFUJI Hideaki atomic_t refcnt; 392a8cc6c8SYOSHIFUJI Hideaki struct rcu_head rcu; 402a8cc6c8SYOSHIFUJI Hideaki }; 412a8cc6c8SYOSHIFUJI Hideaki 422a8cc6c8SYOSHIFUJI Hideaki static struct ip6addrlbl_table 432a8cc6c8SYOSHIFUJI Hideaki { 442a8cc6c8SYOSHIFUJI Hideaki struct hlist_head head; 452a8cc6c8SYOSHIFUJI Hideaki spinlock_t lock; 462a8cc6c8SYOSHIFUJI Hideaki u32 seq; 472a8cc6c8SYOSHIFUJI Hideaki } ip6addrlbl_table; 482a8cc6c8SYOSHIFUJI Hideaki 492a8cc6c8SYOSHIFUJI Hideaki /* 502a8cc6c8SYOSHIFUJI Hideaki * Default policy table (RFC3484 + extensions) 512a8cc6c8SYOSHIFUJI Hideaki * 522a8cc6c8SYOSHIFUJI Hideaki * prefix addr_type label 532a8cc6c8SYOSHIFUJI Hideaki * ------------------------------------------------------------------------- 542a8cc6c8SYOSHIFUJI Hideaki * ::1/128 LOOPBACK 0 552a8cc6c8SYOSHIFUJI Hideaki * ::/0 N/A 1 562a8cc6c8SYOSHIFUJI Hideaki * 2002::/16 N/A 2 572a8cc6c8SYOSHIFUJI Hideaki * ::/96 COMPATv4 3 582a8cc6c8SYOSHIFUJI Hideaki * ::ffff:0:0/96 V4MAPPED 4 592a8cc6c8SYOSHIFUJI Hideaki * fc00::/7 N/A 5 ULA (RFC 4193) 602a8cc6c8SYOSHIFUJI Hideaki * 2001::/32 N/A 6 Teredo (RFC 4380) 612a8cc6c8SYOSHIFUJI Hideaki * 622a8cc6c8SYOSHIFUJI Hideaki * Note: 0xffffffff is used if we do not have any policies. 632a8cc6c8SYOSHIFUJI Hideaki */ 642a8cc6c8SYOSHIFUJI Hideaki 652a8cc6c8SYOSHIFUJI Hideaki #define IPV6_ADDR_LABEL_DEFAULT 0xffffffffUL 662a8cc6c8SYOSHIFUJI Hideaki 672a8cc6c8SYOSHIFUJI Hideaki static const __initdata struct ip6addrlbl_init_table 682a8cc6c8SYOSHIFUJI Hideaki { 692a8cc6c8SYOSHIFUJI Hideaki const struct in6_addr *prefix; 702a8cc6c8SYOSHIFUJI Hideaki int prefixlen; 712a8cc6c8SYOSHIFUJI Hideaki u32 label; 722a8cc6c8SYOSHIFUJI Hideaki } ip6addrlbl_init_table[] = { 732a8cc6c8SYOSHIFUJI Hideaki { /* ::/0 */ 742a8cc6c8SYOSHIFUJI Hideaki .prefix = &in6addr_any, 752a8cc6c8SYOSHIFUJI Hideaki .label = 1, 762a8cc6c8SYOSHIFUJI Hideaki },{ /* fc00::/7 */ 772a8cc6c8SYOSHIFUJI Hideaki .prefix = &(struct in6_addr){{{ 0xfc }}}, 782a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 7, 792a8cc6c8SYOSHIFUJI Hideaki .label = 5, 802a8cc6c8SYOSHIFUJI Hideaki },{ /* 2002::/16 */ 812a8cc6c8SYOSHIFUJI Hideaki .prefix = &(struct in6_addr){{{ 0x20, 0x02 }}}, 822a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 16, 832a8cc6c8SYOSHIFUJI Hideaki .label = 2, 842a8cc6c8SYOSHIFUJI Hideaki },{ /* 2001::/32 */ 852a8cc6c8SYOSHIFUJI Hideaki .prefix = &(struct in6_addr){{{ 0x20, 0x01 }}}, 862a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 32, 872a8cc6c8SYOSHIFUJI Hideaki .label = 6, 882a8cc6c8SYOSHIFUJI Hideaki },{ /* ::ffff:0:0 */ 892a8cc6c8SYOSHIFUJI Hideaki .prefix = &(struct in6_addr){{{ [10] = 0xff, [11] = 0xff }}}, 902a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 96, 912a8cc6c8SYOSHIFUJI Hideaki .label = 4, 922a8cc6c8SYOSHIFUJI Hideaki },{ /* ::/96 */ 932a8cc6c8SYOSHIFUJI Hideaki .prefix = &in6addr_any, 942a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 96, 952a8cc6c8SYOSHIFUJI Hideaki .label = 3, 962a8cc6c8SYOSHIFUJI Hideaki },{ /* ::1/128 */ 972a8cc6c8SYOSHIFUJI Hideaki .prefix = &in6addr_loopback, 982a8cc6c8SYOSHIFUJI Hideaki .prefixlen = 128, 992a8cc6c8SYOSHIFUJI Hideaki .label = 0, 1002a8cc6c8SYOSHIFUJI Hideaki } 1012a8cc6c8SYOSHIFUJI Hideaki }; 1022a8cc6c8SYOSHIFUJI Hideaki 1032a8cc6c8SYOSHIFUJI Hideaki /* Object management */ 1042a8cc6c8SYOSHIFUJI Hideaki static inline void ip6addrlbl_free(struct ip6addrlbl_entry *p) 1052a8cc6c8SYOSHIFUJI Hideaki { 1062a8cc6c8SYOSHIFUJI Hideaki kfree(p); 1072a8cc6c8SYOSHIFUJI Hideaki } 1082a8cc6c8SYOSHIFUJI Hideaki 1092a8cc6c8SYOSHIFUJI Hideaki static inline int ip6addrlbl_hold(struct ip6addrlbl_entry *p) 1102a8cc6c8SYOSHIFUJI Hideaki { 1112a8cc6c8SYOSHIFUJI Hideaki return atomic_inc_not_zero(&p->refcnt); 1122a8cc6c8SYOSHIFUJI Hideaki } 1132a8cc6c8SYOSHIFUJI Hideaki 1142a8cc6c8SYOSHIFUJI Hideaki static inline void ip6addrlbl_put(struct ip6addrlbl_entry *p) 1152a8cc6c8SYOSHIFUJI Hideaki { 1162a8cc6c8SYOSHIFUJI Hideaki if (atomic_dec_and_test(&p->refcnt)) 1172a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_free(p); 1182a8cc6c8SYOSHIFUJI Hideaki } 1192a8cc6c8SYOSHIFUJI Hideaki 1202a8cc6c8SYOSHIFUJI Hideaki static void ip6addrlbl_free_rcu(struct rcu_head *h) 1212a8cc6c8SYOSHIFUJI Hideaki { 1222a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_free(container_of(h, struct ip6addrlbl_entry, rcu)); 1232a8cc6c8SYOSHIFUJI Hideaki } 1242a8cc6c8SYOSHIFUJI Hideaki 1252a8cc6c8SYOSHIFUJI Hideaki /* Find label */ 1262a8cc6c8SYOSHIFUJI Hideaki static int __ip6addrlbl_match(struct ip6addrlbl_entry *p, 1272a8cc6c8SYOSHIFUJI Hideaki const struct in6_addr *addr, 1282a8cc6c8SYOSHIFUJI Hideaki int addrtype, int ifindex) 1292a8cc6c8SYOSHIFUJI Hideaki { 1302a8cc6c8SYOSHIFUJI Hideaki if (p->ifindex && p->ifindex != ifindex) 1312a8cc6c8SYOSHIFUJI Hideaki return 0; 1322a8cc6c8SYOSHIFUJI Hideaki if (p->addrtype && p->addrtype != addrtype) 1332a8cc6c8SYOSHIFUJI Hideaki return 0; 1342a8cc6c8SYOSHIFUJI Hideaki if (!ipv6_prefix_equal(addr, &p->prefix, p->prefixlen)) 1352a8cc6c8SYOSHIFUJI Hideaki return 0; 1362a8cc6c8SYOSHIFUJI Hideaki return 1; 1372a8cc6c8SYOSHIFUJI Hideaki } 1382a8cc6c8SYOSHIFUJI Hideaki 1392a8cc6c8SYOSHIFUJI Hideaki static struct ip6addrlbl_entry *__ipv6_addr_label(const struct in6_addr *addr, 1402a8cc6c8SYOSHIFUJI Hideaki int type, int ifindex) 1412a8cc6c8SYOSHIFUJI Hideaki { 1422a8cc6c8SYOSHIFUJI Hideaki struct hlist_node *pos; 1432a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p; 1442a8cc6c8SYOSHIFUJI Hideaki hlist_for_each_entry_rcu(p, pos, &ip6addrlbl_table.head, list) { 1452a8cc6c8SYOSHIFUJI Hideaki if (__ip6addrlbl_match(p, addr, type, ifindex)) 1462a8cc6c8SYOSHIFUJI Hideaki return p; 1472a8cc6c8SYOSHIFUJI Hideaki } 1482a8cc6c8SYOSHIFUJI Hideaki return NULL; 1492a8cc6c8SYOSHIFUJI Hideaki } 1502a8cc6c8SYOSHIFUJI Hideaki 1512a8cc6c8SYOSHIFUJI Hideaki u32 ipv6_addr_label(const struct in6_addr *addr, int type, int ifindex) 1522a8cc6c8SYOSHIFUJI Hideaki { 1532a8cc6c8SYOSHIFUJI Hideaki u32 label; 1542a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p; 1552a8cc6c8SYOSHIFUJI Hideaki 1562a8cc6c8SYOSHIFUJI Hideaki type &= IPV6_ADDR_MAPPED | IPV6_ADDR_COMPATv4 | IPV6_ADDR_LOOPBACK; 1572a8cc6c8SYOSHIFUJI Hideaki 1582a8cc6c8SYOSHIFUJI Hideaki rcu_read_lock(); 1592a8cc6c8SYOSHIFUJI Hideaki p = __ipv6_addr_label(addr, type, ifindex); 1602a8cc6c8SYOSHIFUJI Hideaki label = p ? p->label : IPV6_ADDR_LABEL_DEFAULT; 1612a8cc6c8SYOSHIFUJI Hideaki rcu_read_unlock(); 1622a8cc6c8SYOSHIFUJI Hideaki 1632a8cc6c8SYOSHIFUJI Hideaki ADDRLABEL(KERN_DEBUG "%s(addr=" NIP6_FMT ", type=%d, ifindex=%d) => %08x\n", 1642a8cc6c8SYOSHIFUJI Hideaki __FUNCTION__, 1652a8cc6c8SYOSHIFUJI Hideaki NIP6(*addr), type, ifindex, 1662a8cc6c8SYOSHIFUJI Hideaki label); 1672a8cc6c8SYOSHIFUJI Hideaki 1682a8cc6c8SYOSHIFUJI Hideaki return label; 1692a8cc6c8SYOSHIFUJI Hideaki } 1702a8cc6c8SYOSHIFUJI Hideaki 1712a8cc6c8SYOSHIFUJI Hideaki /* allocate one entry */ 17240fee36eSYOSHIFUJI Hideaki static struct ip6addrlbl_entry *ip6addrlbl_alloc(const struct in6_addr *prefix, 1732a8cc6c8SYOSHIFUJI Hideaki int prefixlen, int ifindex, 1742a8cc6c8SYOSHIFUJI Hideaki u32 label) 1752a8cc6c8SYOSHIFUJI Hideaki { 1762a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *newp; 1772a8cc6c8SYOSHIFUJI Hideaki int addrtype; 1782a8cc6c8SYOSHIFUJI Hideaki 1792a8cc6c8SYOSHIFUJI Hideaki ADDRLABEL(KERN_DEBUG "%s(prefix=" NIP6_FMT ", prefixlen=%d, ifindex=%d, label=%u)\n", 1802a8cc6c8SYOSHIFUJI Hideaki __FUNCTION__, 1812a8cc6c8SYOSHIFUJI Hideaki NIP6(*prefix), prefixlen, 1822a8cc6c8SYOSHIFUJI Hideaki ifindex, 1832a8cc6c8SYOSHIFUJI Hideaki (unsigned int)label); 1842a8cc6c8SYOSHIFUJI Hideaki 1852a8cc6c8SYOSHIFUJI Hideaki addrtype = ipv6_addr_type(prefix) & (IPV6_ADDR_MAPPED | IPV6_ADDR_COMPATv4 | IPV6_ADDR_LOOPBACK); 1862a8cc6c8SYOSHIFUJI Hideaki 1872a8cc6c8SYOSHIFUJI Hideaki switch (addrtype) { 1882a8cc6c8SYOSHIFUJI Hideaki case IPV6_ADDR_MAPPED: 1892a8cc6c8SYOSHIFUJI Hideaki if (prefixlen > 96) 1902a8cc6c8SYOSHIFUJI Hideaki return ERR_PTR(-EINVAL); 1912a8cc6c8SYOSHIFUJI Hideaki if (prefixlen < 96) 1922a8cc6c8SYOSHIFUJI Hideaki addrtype = 0; 1932a8cc6c8SYOSHIFUJI Hideaki break; 1942a8cc6c8SYOSHIFUJI Hideaki case IPV6_ADDR_COMPATv4: 1952a8cc6c8SYOSHIFUJI Hideaki if (prefixlen != 96) 1962a8cc6c8SYOSHIFUJI Hideaki addrtype = 0; 1972a8cc6c8SYOSHIFUJI Hideaki break; 1982a8cc6c8SYOSHIFUJI Hideaki case IPV6_ADDR_LOOPBACK: 1992a8cc6c8SYOSHIFUJI Hideaki if (prefixlen != 128) 2002a8cc6c8SYOSHIFUJI Hideaki addrtype = 0; 2012a8cc6c8SYOSHIFUJI Hideaki break; 2022a8cc6c8SYOSHIFUJI Hideaki } 2032a8cc6c8SYOSHIFUJI Hideaki 2042a8cc6c8SYOSHIFUJI Hideaki newp = kmalloc(sizeof(*newp), GFP_KERNEL); 2052a8cc6c8SYOSHIFUJI Hideaki if (!newp) 2062a8cc6c8SYOSHIFUJI Hideaki return ERR_PTR(-ENOMEM); 2072a8cc6c8SYOSHIFUJI Hideaki 2082a8cc6c8SYOSHIFUJI Hideaki ipv6_addr_prefix(&newp->prefix, prefix, prefixlen); 2092a8cc6c8SYOSHIFUJI Hideaki newp->prefixlen = prefixlen; 2102a8cc6c8SYOSHIFUJI Hideaki newp->ifindex = ifindex; 2112a8cc6c8SYOSHIFUJI Hideaki newp->addrtype = addrtype; 2122a8cc6c8SYOSHIFUJI Hideaki newp->label = label; 2132a8cc6c8SYOSHIFUJI Hideaki INIT_HLIST_NODE(&newp->list); 2142a8cc6c8SYOSHIFUJI Hideaki atomic_set(&newp->refcnt, 1); 2152a8cc6c8SYOSHIFUJI Hideaki return newp; 2162a8cc6c8SYOSHIFUJI Hideaki } 2172a8cc6c8SYOSHIFUJI Hideaki 2182a8cc6c8SYOSHIFUJI Hideaki /* add a label */ 21940fee36eSYOSHIFUJI Hideaki static int __ip6addrlbl_add(struct ip6addrlbl_entry *newp, int replace) 2202a8cc6c8SYOSHIFUJI Hideaki { 2212a8cc6c8SYOSHIFUJI Hideaki int ret = 0; 2222a8cc6c8SYOSHIFUJI Hideaki 2232a8cc6c8SYOSHIFUJI Hideaki ADDRLABEL(KERN_DEBUG "%s(newp=%p, replace=%d)\n", 2242a8cc6c8SYOSHIFUJI Hideaki __FUNCTION__, 2252a8cc6c8SYOSHIFUJI Hideaki newp, replace); 2262a8cc6c8SYOSHIFUJI Hideaki 2272a8cc6c8SYOSHIFUJI Hideaki if (hlist_empty(&ip6addrlbl_table.head)) { 2282a8cc6c8SYOSHIFUJI Hideaki hlist_add_head_rcu(&newp->list, &ip6addrlbl_table.head); 2292a8cc6c8SYOSHIFUJI Hideaki } else { 2302a8cc6c8SYOSHIFUJI Hideaki struct hlist_node *pos, *n; 2312a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p = NULL; 2322a8cc6c8SYOSHIFUJI Hideaki hlist_for_each_entry_safe(p, pos, n, 2332a8cc6c8SYOSHIFUJI Hideaki &ip6addrlbl_table.head, list) { 2342a8cc6c8SYOSHIFUJI Hideaki if (p->prefixlen == newp->prefixlen && 2352a8cc6c8SYOSHIFUJI Hideaki p->ifindex == newp->ifindex && 2362a8cc6c8SYOSHIFUJI Hideaki ipv6_addr_equal(&p->prefix, &newp->prefix)) { 2372a8cc6c8SYOSHIFUJI Hideaki if (!replace) { 2382a8cc6c8SYOSHIFUJI Hideaki ret = -EEXIST; 2392a8cc6c8SYOSHIFUJI Hideaki goto out; 2402a8cc6c8SYOSHIFUJI Hideaki } 2412a8cc6c8SYOSHIFUJI Hideaki hlist_replace_rcu(&p->list, &newp->list); 2422a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_put(p); 2432a8cc6c8SYOSHIFUJI Hideaki call_rcu(&p->rcu, ip6addrlbl_free_rcu); 2442a8cc6c8SYOSHIFUJI Hideaki goto out; 2452a8cc6c8SYOSHIFUJI Hideaki } else if ((p->prefixlen == newp->prefixlen && !p->ifindex) || 2462a8cc6c8SYOSHIFUJI Hideaki (p->prefixlen < newp->prefixlen)) { 2472a8cc6c8SYOSHIFUJI Hideaki hlist_add_before_rcu(&newp->list, &p->list); 2482a8cc6c8SYOSHIFUJI Hideaki goto out; 2492a8cc6c8SYOSHIFUJI Hideaki } 2502a8cc6c8SYOSHIFUJI Hideaki } 2512a8cc6c8SYOSHIFUJI Hideaki hlist_add_after_rcu(&p->list, &newp->list); 2522a8cc6c8SYOSHIFUJI Hideaki } 2532a8cc6c8SYOSHIFUJI Hideaki out: 2542a8cc6c8SYOSHIFUJI Hideaki if (!ret) 2552a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_table.seq++; 2562a8cc6c8SYOSHIFUJI Hideaki return ret; 2572a8cc6c8SYOSHIFUJI Hideaki } 2582a8cc6c8SYOSHIFUJI Hideaki 2592a8cc6c8SYOSHIFUJI Hideaki /* add a label */ 26040fee36eSYOSHIFUJI Hideaki static int ip6addrlbl_add(const struct in6_addr *prefix, int prefixlen, 2612a8cc6c8SYOSHIFUJI Hideaki int ifindex, u32 label, int replace) 2622a8cc6c8SYOSHIFUJI Hideaki { 2632a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *newp; 2642a8cc6c8SYOSHIFUJI Hideaki int ret = 0; 2652a8cc6c8SYOSHIFUJI Hideaki 2662a8cc6c8SYOSHIFUJI Hideaki ADDRLABEL(KERN_DEBUG "%s(prefix=" NIP6_FMT ", prefixlen=%d, ifindex=%d, label=%u, replace=%d)\n", 2672a8cc6c8SYOSHIFUJI Hideaki __FUNCTION__, 2682a8cc6c8SYOSHIFUJI Hideaki NIP6(*prefix), prefixlen, 2692a8cc6c8SYOSHIFUJI Hideaki ifindex, 2702a8cc6c8SYOSHIFUJI Hideaki (unsigned int)label, 2712a8cc6c8SYOSHIFUJI Hideaki replace); 2722a8cc6c8SYOSHIFUJI Hideaki 2732a8cc6c8SYOSHIFUJI Hideaki newp = ip6addrlbl_alloc(prefix, prefixlen, ifindex, label); 2742a8cc6c8SYOSHIFUJI Hideaki if (IS_ERR(newp)) 2752a8cc6c8SYOSHIFUJI Hideaki return PTR_ERR(newp); 2762a8cc6c8SYOSHIFUJI Hideaki spin_lock(&ip6addrlbl_table.lock); 2772a8cc6c8SYOSHIFUJI Hideaki ret = __ip6addrlbl_add(newp, replace); 2782a8cc6c8SYOSHIFUJI Hideaki spin_unlock(&ip6addrlbl_table.lock); 2792a8cc6c8SYOSHIFUJI Hideaki if (ret) 2802a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_free(newp); 2812a8cc6c8SYOSHIFUJI Hideaki return ret; 2822a8cc6c8SYOSHIFUJI Hideaki } 2832a8cc6c8SYOSHIFUJI Hideaki 2842a8cc6c8SYOSHIFUJI Hideaki /* remove a label */ 28540fee36eSYOSHIFUJI Hideaki static int __ip6addrlbl_del(const struct in6_addr *prefix, int prefixlen, 2862a8cc6c8SYOSHIFUJI Hideaki int ifindex) 2872a8cc6c8SYOSHIFUJI Hideaki { 2882a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p = NULL; 2892a8cc6c8SYOSHIFUJI Hideaki struct hlist_node *pos, *n; 2902a8cc6c8SYOSHIFUJI Hideaki int ret = -ESRCH; 2912a8cc6c8SYOSHIFUJI Hideaki 2922a8cc6c8SYOSHIFUJI Hideaki ADDRLABEL(KERN_DEBUG "%s(prefix=" NIP6_FMT ", prefixlen=%d, ifindex=%d)\n", 2932a8cc6c8SYOSHIFUJI Hideaki __FUNCTION__, 2942a8cc6c8SYOSHIFUJI Hideaki NIP6(*prefix), prefixlen, 2952a8cc6c8SYOSHIFUJI Hideaki ifindex); 2962a8cc6c8SYOSHIFUJI Hideaki 2972a8cc6c8SYOSHIFUJI Hideaki hlist_for_each_entry_safe(p, pos, n, &ip6addrlbl_table.head, list) { 2982a8cc6c8SYOSHIFUJI Hideaki if (p->prefixlen == prefixlen && 2992a8cc6c8SYOSHIFUJI Hideaki p->ifindex == ifindex && 3002a8cc6c8SYOSHIFUJI Hideaki ipv6_addr_equal(&p->prefix, prefix)) { 3012a8cc6c8SYOSHIFUJI Hideaki hlist_del_rcu(&p->list); 3022a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_put(p); 3032a8cc6c8SYOSHIFUJI Hideaki call_rcu(&p->rcu, ip6addrlbl_free_rcu); 3042a8cc6c8SYOSHIFUJI Hideaki ret = 0; 3052a8cc6c8SYOSHIFUJI Hideaki break; 3062a8cc6c8SYOSHIFUJI Hideaki } 3072a8cc6c8SYOSHIFUJI Hideaki } 3082a8cc6c8SYOSHIFUJI Hideaki return ret; 3092a8cc6c8SYOSHIFUJI Hideaki } 3102a8cc6c8SYOSHIFUJI Hideaki 31140fee36eSYOSHIFUJI Hideaki static int ip6addrlbl_del(const struct in6_addr *prefix, int prefixlen, 3122a8cc6c8SYOSHIFUJI Hideaki int ifindex) 3132a8cc6c8SYOSHIFUJI Hideaki { 3142a8cc6c8SYOSHIFUJI Hideaki struct in6_addr prefix_buf; 3152a8cc6c8SYOSHIFUJI Hideaki int ret; 3162a8cc6c8SYOSHIFUJI Hideaki 3172a8cc6c8SYOSHIFUJI Hideaki ADDRLABEL(KERN_DEBUG "%s(prefix=" NIP6_FMT ", prefixlen=%d, ifindex=%d)\n", 3182a8cc6c8SYOSHIFUJI Hideaki __FUNCTION__, 3192a8cc6c8SYOSHIFUJI Hideaki NIP6(*prefix), prefixlen, 3202a8cc6c8SYOSHIFUJI Hideaki ifindex); 3212a8cc6c8SYOSHIFUJI Hideaki 3222a8cc6c8SYOSHIFUJI Hideaki ipv6_addr_prefix(&prefix_buf, prefix, prefixlen); 3232a8cc6c8SYOSHIFUJI Hideaki spin_lock(&ip6addrlbl_table.lock); 3242a8cc6c8SYOSHIFUJI Hideaki ret = __ip6addrlbl_del(&prefix_buf, prefixlen, ifindex); 3252a8cc6c8SYOSHIFUJI Hideaki spin_unlock(&ip6addrlbl_table.lock); 3262a8cc6c8SYOSHIFUJI Hideaki return ret; 3272a8cc6c8SYOSHIFUJI Hideaki } 3282a8cc6c8SYOSHIFUJI Hideaki 3292a8cc6c8SYOSHIFUJI Hideaki /* add default label */ 3302a8cc6c8SYOSHIFUJI Hideaki static __init int ip6addrlbl_init(void) 3312a8cc6c8SYOSHIFUJI Hideaki { 3322a8cc6c8SYOSHIFUJI Hideaki int err = 0; 3332a8cc6c8SYOSHIFUJI Hideaki int i; 3342a8cc6c8SYOSHIFUJI Hideaki 3352a8cc6c8SYOSHIFUJI Hideaki ADDRLABEL(KERN_DEBUG "%s()\n", __FUNCTION__); 3362a8cc6c8SYOSHIFUJI Hideaki 3372a8cc6c8SYOSHIFUJI Hideaki for (i = 0; i < ARRAY_SIZE(ip6addrlbl_init_table); i++) { 3382a8cc6c8SYOSHIFUJI Hideaki int ret = ip6addrlbl_add(ip6addrlbl_init_table[i].prefix, 3392a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_init_table[i].prefixlen, 3402a8cc6c8SYOSHIFUJI Hideaki 0, 3412a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_init_table[i].label, 0); 3422a8cc6c8SYOSHIFUJI Hideaki /* XXX: should we free all rules when we catch an error? */ 3432a8cc6c8SYOSHIFUJI Hideaki if (ret && (!err || err != -ENOMEM)) 3442a8cc6c8SYOSHIFUJI Hideaki err = ret; 3452a8cc6c8SYOSHIFUJI Hideaki } 3462a8cc6c8SYOSHIFUJI Hideaki return err; 3472a8cc6c8SYOSHIFUJI Hideaki } 3482a8cc6c8SYOSHIFUJI Hideaki 3492a8cc6c8SYOSHIFUJI Hideaki int __init ipv6_addr_label_init(void) 3502a8cc6c8SYOSHIFUJI Hideaki { 3512a8cc6c8SYOSHIFUJI Hideaki spin_lock_init(&ip6addrlbl_table.lock); 3522a8cc6c8SYOSHIFUJI Hideaki 3532a8cc6c8SYOSHIFUJI Hideaki return ip6addrlbl_init(); 3542a8cc6c8SYOSHIFUJI Hideaki } 3552a8cc6c8SYOSHIFUJI Hideaki 3562a8cc6c8SYOSHIFUJI Hideaki static const struct nla_policy ifal_policy[IFAL_MAX+1] = { 3572a8cc6c8SYOSHIFUJI Hideaki [IFAL_ADDRESS] = { .len = sizeof(struct in6_addr), }, 3582a8cc6c8SYOSHIFUJI Hideaki [IFAL_LABEL] = { .len = sizeof(u32), }, 3592a8cc6c8SYOSHIFUJI Hideaki }; 3602a8cc6c8SYOSHIFUJI Hideaki 3612a8cc6c8SYOSHIFUJI Hideaki static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh, 3622a8cc6c8SYOSHIFUJI Hideaki void *arg) 3632a8cc6c8SYOSHIFUJI Hideaki { 364b854272bSDenis V. Lunev struct net *net = skb->sk->sk_net; 3652a8cc6c8SYOSHIFUJI Hideaki struct ifaddrlblmsg *ifal; 3662a8cc6c8SYOSHIFUJI Hideaki struct nlattr *tb[IFAL_MAX+1]; 3672a8cc6c8SYOSHIFUJI Hideaki struct in6_addr *pfx; 3682a8cc6c8SYOSHIFUJI Hideaki u32 label; 3692a8cc6c8SYOSHIFUJI Hideaki int err = 0; 3702a8cc6c8SYOSHIFUJI Hideaki 371b854272bSDenis V. Lunev if (net != &init_net) 372b854272bSDenis V. Lunev return 0; 373b854272bSDenis V. Lunev 3742a8cc6c8SYOSHIFUJI Hideaki err = nlmsg_parse(nlh, sizeof(*ifal), tb, IFAL_MAX, ifal_policy); 3752a8cc6c8SYOSHIFUJI Hideaki if (err < 0) 3762a8cc6c8SYOSHIFUJI Hideaki return err; 3772a8cc6c8SYOSHIFUJI Hideaki 3782a8cc6c8SYOSHIFUJI Hideaki ifal = nlmsg_data(nlh); 3792a8cc6c8SYOSHIFUJI Hideaki 3802a8cc6c8SYOSHIFUJI Hideaki if (ifal->ifal_family != AF_INET6 || 3812a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_prefixlen > 128) 3822a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 3832a8cc6c8SYOSHIFUJI Hideaki 3842a8cc6c8SYOSHIFUJI Hideaki if (ifal->ifal_index && 3852a8cc6c8SYOSHIFUJI Hideaki !__dev_get_by_index(&init_net, ifal->ifal_index)) 3862a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 3872a8cc6c8SYOSHIFUJI Hideaki 3882a8cc6c8SYOSHIFUJI Hideaki if (!tb[IFAL_ADDRESS]) 3892a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 3902a8cc6c8SYOSHIFUJI Hideaki 3912a8cc6c8SYOSHIFUJI Hideaki pfx = nla_data(tb[IFAL_ADDRESS]); 3922a8cc6c8SYOSHIFUJI Hideaki if (!pfx) 3932a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 3942a8cc6c8SYOSHIFUJI Hideaki 3952a8cc6c8SYOSHIFUJI Hideaki if (!tb[IFAL_LABEL]) 3962a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 3972a8cc6c8SYOSHIFUJI Hideaki label = nla_get_u32(tb[IFAL_LABEL]); 3982a8cc6c8SYOSHIFUJI Hideaki if (label == IPV6_ADDR_LABEL_DEFAULT) 3992a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 4002a8cc6c8SYOSHIFUJI Hideaki 4012a8cc6c8SYOSHIFUJI Hideaki switch(nlh->nlmsg_type) { 4022a8cc6c8SYOSHIFUJI Hideaki case RTM_NEWADDRLABEL: 4032a8cc6c8SYOSHIFUJI Hideaki err = ip6addrlbl_add(pfx, ifal->ifal_prefixlen, 4042a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_index, label, 4052a8cc6c8SYOSHIFUJI Hideaki nlh->nlmsg_flags & NLM_F_REPLACE); 4062a8cc6c8SYOSHIFUJI Hideaki break; 4072a8cc6c8SYOSHIFUJI Hideaki case RTM_DELADDRLABEL: 4082a8cc6c8SYOSHIFUJI Hideaki err = ip6addrlbl_del(pfx, ifal->ifal_prefixlen, 4092a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_index); 4102a8cc6c8SYOSHIFUJI Hideaki break; 4112a8cc6c8SYOSHIFUJI Hideaki default: 4122a8cc6c8SYOSHIFUJI Hideaki err = -EOPNOTSUPP; 4132a8cc6c8SYOSHIFUJI Hideaki } 4142a8cc6c8SYOSHIFUJI Hideaki return err; 4152a8cc6c8SYOSHIFUJI Hideaki } 4162a8cc6c8SYOSHIFUJI Hideaki 4172a8cc6c8SYOSHIFUJI Hideaki static inline void ip6addrlbl_putmsg(struct nlmsghdr *nlh, 4182a8cc6c8SYOSHIFUJI Hideaki int prefixlen, int ifindex, u32 lseq) 4192a8cc6c8SYOSHIFUJI Hideaki { 4202a8cc6c8SYOSHIFUJI Hideaki struct ifaddrlblmsg *ifal = nlmsg_data(nlh); 4212a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_family = AF_INET6; 4222a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_prefixlen = prefixlen; 4232a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_flags = 0; 4242a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_index = ifindex; 4252a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_seq = lseq; 4262a8cc6c8SYOSHIFUJI Hideaki }; 4272a8cc6c8SYOSHIFUJI Hideaki 4282a8cc6c8SYOSHIFUJI Hideaki static int ip6addrlbl_fill(struct sk_buff *skb, 4292a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p, 4302a8cc6c8SYOSHIFUJI Hideaki u32 lseq, 4312a8cc6c8SYOSHIFUJI Hideaki u32 pid, u32 seq, int event, 4322a8cc6c8SYOSHIFUJI Hideaki unsigned int flags) 4332a8cc6c8SYOSHIFUJI Hideaki { 4342a8cc6c8SYOSHIFUJI Hideaki struct nlmsghdr *nlh = nlmsg_put(skb, pid, seq, event, 4352a8cc6c8SYOSHIFUJI Hideaki sizeof(struct ifaddrlblmsg), flags); 4362a8cc6c8SYOSHIFUJI Hideaki if (!nlh) 4372a8cc6c8SYOSHIFUJI Hideaki return -EMSGSIZE; 4382a8cc6c8SYOSHIFUJI Hideaki 4392a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_putmsg(nlh, p->prefixlen, p->ifindex, lseq); 4402a8cc6c8SYOSHIFUJI Hideaki 4412a8cc6c8SYOSHIFUJI Hideaki if (nla_put(skb, IFAL_ADDRESS, 16, &p->prefix) < 0 || 4422a8cc6c8SYOSHIFUJI Hideaki nla_put_u32(skb, IFAL_LABEL, p->label) < 0) { 4432a8cc6c8SYOSHIFUJI Hideaki nlmsg_cancel(skb, nlh); 4442a8cc6c8SYOSHIFUJI Hideaki return -EMSGSIZE; 4452a8cc6c8SYOSHIFUJI Hideaki } 4462a8cc6c8SYOSHIFUJI Hideaki 4472a8cc6c8SYOSHIFUJI Hideaki return nlmsg_end(skb, nlh); 4482a8cc6c8SYOSHIFUJI Hideaki } 4492a8cc6c8SYOSHIFUJI Hideaki 4502a8cc6c8SYOSHIFUJI Hideaki static int ip6addrlbl_dump(struct sk_buff *skb, struct netlink_callback *cb) 4512a8cc6c8SYOSHIFUJI Hideaki { 452b854272bSDenis V. Lunev struct net *net = skb->sk->sk_net; 4532a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p; 4542a8cc6c8SYOSHIFUJI Hideaki struct hlist_node *pos; 4552a8cc6c8SYOSHIFUJI Hideaki int idx = 0, s_idx = cb->args[0]; 4562a8cc6c8SYOSHIFUJI Hideaki int err; 4572a8cc6c8SYOSHIFUJI Hideaki 458b854272bSDenis V. Lunev if (net != &init_net) 459b854272bSDenis V. Lunev return 0; 460b854272bSDenis V. Lunev 4612a8cc6c8SYOSHIFUJI Hideaki rcu_read_lock(); 4622a8cc6c8SYOSHIFUJI Hideaki hlist_for_each_entry_rcu(p, pos, &ip6addrlbl_table.head, list) { 4632a8cc6c8SYOSHIFUJI Hideaki if (idx >= s_idx) { 4642a8cc6c8SYOSHIFUJI Hideaki if ((err = ip6addrlbl_fill(skb, p, 4652a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_table.seq, 4662a8cc6c8SYOSHIFUJI Hideaki NETLINK_CB(cb->skb).pid, 4672a8cc6c8SYOSHIFUJI Hideaki cb->nlh->nlmsg_seq, 4682a8cc6c8SYOSHIFUJI Hideaki RTM_NEWADDRLABEL, 4692a8cc6c8SYOSHIFUJI Hideaki NLM_F_MULTI)) <= 0) 4702a8cc6c8SYOSHIFUJI Hideaki break; 4712a8cc6c8SYOSHIFUJI Hideaki } 4722a8cc6c8SYOSHIFUJI Hideaki idx++; 4732a8cc6c8SYOSHIFUJI Hideaki } 4742a8cc6c8SYOSHIFUJI Hideaki rcu_read_unlock(); 4752a8cc6c8SYOSHIFUJI Hideaki cb->args[0] = idx; 4762a8cc6c8SYOSHIFUJI Hideaki return skb->len; 4772a8cc6c8SYOSHIFUJI Hideaki } 4782a8cc6c8SYOSHIFUJI Hideaki 4792a8cc6c8SYOSHIFUJI Hideaki static inline int ip6addrlbl_msgsize(void) 4802a8cc6c8SYOSHIFUJI Hideaki { 4812a8cc6c8SYOSHIFUJI Hideaki return (NLMSG_ALIGN(sizeof(struct ifaddrlblmsg)) 4822a8cc6c8SYOSHIFUJI Hideaki + nla_total_size(16) /* IFAL_ADDRESS */ 4832a8cc6c8SYOSHIFUJI Hideaki + nla_total_size(4) /* IFAL_LABEL */ 4842a8cc6c8SYOSHIFUJI Hideaki ); 4852a8cc6c8SYOSHIFUJI Hideaki } 4862a8cc6c8SYOSHIFUJI Hideaki 4872a8cc6c8SYOSHIFUJI Hideaki static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr* nlh, 4882a8cc6c8SYOSHIFUJI Hideaki void *arg) 4892a8cc6c8SYOSHIFUJI Hideaki { 490b854272bSDenis V. Lunev struct net *net = in_skb->sk->sk_net; 4912a8cc6c8SYOSHIFUJI Hideaki struct ifaddrlblmsg *ifal; 4922a8cc6c8SYOSHIFUJI Hideaki struct nlattr *tb[IFAL_MAX+1]; 4932a8cc6c8SYOSHIFUJI Hideaki struct in6_addr *addr; 4942a8cc6c8SYOSHIFUJI Hideaki u32 lseq; 4952a8cc6c8SYOSHIFUJI Hideaki int err = 0; 4962a8cc6c8SYOSHIFUJI Hideaki struct ip6addrlbl_entry *p; 4972a8cc6c8SYOSHIFUJI Hideaki struct sk_buff *skb; 4982a8cc6c8SYOSHIFUJI Hideaki 499b854272bSDenis V. Lunev if (net != &init_net) 500b854272bSDenis V. Lunev return 0; 501b854272bSDenis V. Lunev 5022a8cc6c8SYOSHIFUJI Hideaki err = nlmsg_parse(nlh, sizeof(*ifal), tb, IFAL_MAX, ifal_policy); 5032a8cc6c8SYOSHIFUJI Hideaki if (err < 0) 5042a8cc6c8SYOSHIFUJI Hideaki return err; 5052a8cc6c8SYOSHIFUJI Hideaki 5062a8cc6c8SYOSHIFUJI Hideaki ifal = nlmsg_data(nlh); 5072a8cc6c8SYOSHIFUJI Hideaki 5082a8cc6c8SYOSHIFUJI Hideaki if (ifal->ifal_family != AF_INET6 || 5092a8cc6c8SYOSHIFUJI Hideaki ifal->ifal_prefixlen != 128) 5102a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 5112a8cc6c8SYOSHIFUJI Hideaki 5122a8cc6c8SYOSHIFUJI Hideaki if (ifal->ifal_index && 5132a8cc6c8SYOSHIFUJI Hideaki !__dev_get_by_index(&init_net, ifal->ifal_index)) 5142a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 5152a8cc6c8SYOSHIFUJI Hideaki 5162a8cc6c8SYOSHIFUJI Hideaki if (!tb[IFAL_ADDRESS]) 5172a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 5182a8cc6c8SYOSHIFUJI Hideaki 5192a8cc6c8SYOSHIFUJI Hideaki addr = nla_data(tb[IFAL_ADDRESS]); 5202a8cc6c8SYOSHIFUJI Hideaki if (!addr) 5212a8cc6c8SYOSHIFUJI Hideaki return -EINVAL; 5222a8cc6c8SYOSHIFUJI Hideaki 5232a8cc6c8SYOSHIFUJI Hideaki rcu_read_lock(); 5242a8cc6c8SYOSHIFUJI Hideaki p = __ipv6_addr_label(addr, ipv6_addr_type(addr), ifal->ifal_index); 5252a8cc6c8SYOSHIFUJI Hideaki if (p && ip6addrlbl_hold(p)) 5262a8cc6c8SYOSHIFUJI Hideaki p = NULL; 5272a8cc6c8SYOSHIFUJI Hideaki lseq = ip6addrlbl_table.seq; 5282a8cc6c8SYOSHIFUJI Hideaki rcu_read_unlock(); 5292a8cc6c8SYOSHIFUJI Hideaki 5302a8cc6c8SYOSHIFUJI Hideaki if (!p) { 5312a8cc6c8SYOSHIFUJI Hideaki err = -ESRCH; 5322a8cc6c8SYOSHIFUJI Hideaki goto out; 5332a8cc6c8SYOSHIFUJI Hideaki } 5342a8cc6c8SYOSHIFUJI Hideaki 5352a8cc6c8SYOSHIFUJI Hideaki if (!(skb = nlmsg_new(ip6addrlbl_msgsize(), GFP_KERNEL))) { 5362a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_put(p); 5372a8cc6c8SYOSHIFUJI Hideaki return -ENOBUFS; 5382a8cc6c8SYOSHIFUJI Hideaki } 5392a8cc6c8SYOSHIFUJI Hideaki 5402a8cc6c8SYOSHIFUJI Hideaki err = ip6addrlbl_fill(skb, p, lseq, 5412a8cc6c8SYOSHIFUJI Hideaki NETLINK_CB(in_skb).pid, nlh->nlmsg_seq, 5422a8cc6c8SYOSHIFUJI Hideaki RTM_NEWADDRLABEL, 0); 5432a8cc6c8SYOSHIFUJI Hideaki 5442a8cc6c8SYOSHIFUJI Hideaki ip6addrlbl_put(p); 5452a8cc6c8SYOSHIFUJI Hideaki 5462a8cc6c8SYOSHIFUJI Hideaki if (err < 0) { 5472a8cc6c8SYOSHIFUJI Hideaki WARN_ON(err == -EMSGSIZE); 5482a8cc6c8SYOSHIFUJI Hideaki kfree_skb(skb); 5492a8cc6c8SYOSHIFUJI Hideaki goto out; 5502a8cc6c8SYOSHIFUJI Hideaki } 5512a8cc6c8SYOSHIFUJI Hideaki 55297c53cacSDenis V. Lunev err = rtnl_unicast(skb, &init_net, NETLINK_CB(in_skb).pid); 5532a8cc6c8SYOSHIFUJI Hideaki out: 5542a8cc6c8SYOSHIFUJI Hideaki return err; 5552a8cc6c8SYOSHIFUJI Hideaki } 5562a8cc6c8SYOSHIFUJI Hideaki 5572a8cc6c8SYOSHIFUJI Hideaki void __init ipv6_addr_label_rtnl_register(void) 5582a8cc6c8SYOSHIFUJI Hideaki { 5592a8cc6c8SYOSHIFUJI Hideaki __rtnl_register(PF_INET6, RTM_NEWADDRLABEL, ip6addrlbl_newdel, NULL); 5602a8cc6c8SYOSHIFUJI Hideaki __rtnl_register(PF_INET6, RTM_DELADDRLABEL, ip6addrlbl_newdel, NULL); 5612a8cc6c8SYOSHIFUJI Hideaki __rtnl_register(PF_INET6, RTM_GETADDRLABEL, ip6addrlbl_get, ip6addrlbl_dump); 5622a8cc6c8SYOSHIFUJI Hideaki } 5632a8cc6c8SYOSHIFUJI Hideaki 564