4 #define RETRANS_TIMER HZ
6 #define MAX_RTR_SOLICITATIONS 3
7 #define RTR_SOLICITATION_INTERVAL (4*HZ)
9 #define MIN_VALID_LIFETIME (2*3600) /* 2 hours */
11 #define TEMP_VALID_LIFETIME (7*86400)
12 #define TEMP_PREFERRED_LIFETIME (86400)
13 #define REGEN_MAX_RETRY (5)
14 #define MAX_DESYNC_FACTOR (600)
16 #define ADDR_CHECK_FREQUENCY (120*HZ)
18 #define IPV6_MAX_ADDRESSES 16
21 #include <linux/in6.h>
28 #if defined(__BIG_ENDIAN_BITFIELD)
32 #elif defined(__LITTLE_ENDIAN_BITFIELD)
37 #error "Please fix <asm/byteorder.h>"
43 struct in6_addr prefix;
49 #include <linux/netdevice.h>
50 #include <net/if_inet6.h>
53 #define IN6_ADDR_HSIZE 16
55 extern int addrconf_init(void);
56 extern void addrconf_cleanup(void);
58 extern int addrconf_add_ifaddr(struct net *net,
60 extern int addrconf_del_ifaddr(struct net *net,
62 extern int addrconf_set_dstaddr(struct net *net,
65 extern int ipv6_chk_addr(struct net *net,
66 struct in6_addr *addr,
67 struct net_device *dev,
70 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
71 extern int ipv6_chk_home_addr(struct net *net,
72 struct in6_addr *addr);
74 extern struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net,
75 struct in6_addr *addr,
76 struct net_device *dev,
79 extern int ipv6_dev_get_saddr(struct net_device *dev,
80 struct in6_addr *daddr,
81 unsigned int srcprefs,
82 struct in6_addr *saddr);
83 extern int ipv6_get_lladdr(struct net_device *dev,
84 struct in6_addr *addr,
85 unsigned char banned_flags);
86 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
87 const struct sock *sk2);
88 extern void addrconf_join_solict(struct net_device *dev,
89 struct in6_addr *addr);
90 extern void addrconf_leave_solict(struct inet6_dev *idev,
91 struct in6_addr *addr);
94 * IPv6 Address Label subsystem (addrlabel.c)
96 extern int ipv6_addr_label_init(void);
97 extern void ipv6_addr_label_rtnl_register(void);
98 extern u32 ipv6_addr_label(const struct in6_addr *addr,
99 int type, int ifindex);
102 * multicast prototypes (mcast.c)
104 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
105 struct in6_addr *addr);
106 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
107 struct in6_addr *addr);
108 extern void ipv6_sock_mc_close(struct sock *sk);
109 extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
110 struct in6_addr *src_addr);
112 extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
113 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
114 extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
115 extern void ipv6_mc_up(struct inet6_dev *idev);
116 extern void ipv6_mc_down(struct inet6_dev *idev);
117 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
118 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
119 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
121 extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
122 struct in6_addr *src_addr);
123 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
125 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
128 * anycast prototypes (anycast.c)
130 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
131 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
132 extern void ipv6_sock_ac_close(struct sock *sk);
133 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
135 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
136 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
137 extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
138 struct in6_addr *addr);
141 /* Device notifier */
142 extern int register_inet6addr_notifier(struct notifier_block *nb);
143 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
145 static inline struct inet6_dev *
146 __in6_dev_get(struct net_device *dev)
148 return rcu_dereference(dev->ip6_ptr);
151 static inline struct inet6_dev *
152 in6_dev_get(struct net_device *dev)
154 struct inet6_dev *idev = NULL;
156 idev = __in6_dev_get(dev);
158 atomic_inc(&idev->refcnt);
163 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
166 in6_dev_put(struct inet6_dev *idev)
168 if (atomic_dec_and_test(&idev->refcnt))
169 in6_dev_finish_destroy(idev);
172 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
173 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
176 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
178 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
180 if (atomic_dec_and_test(&ifp->refcnt))
181 inet6_ifa_finish_destroy(ifp);
184 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
185 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
189 * Hash function taken from net_alias.c
192 static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
197 * We perform the hash function over the last 64 bits of the address
198 * This will include the IEEE address token on links that support it.
201 word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]);
202 word ^= (word >> 16);
205 return ((word ^ (word >> 4)) & 0x0f);
209 * compute link-local solicited-node multicast address
212 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
213 struct in6_addr *solicited)
215 ipv6_addr_set(solicited,
216 htonl(0xFF020000), 0,
218 htonl(0xFF000000) | addr->s6_addr32[3]);
222 static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
224 ipv6_addr_set(addr, htonl(0xFF020000), 0, 0, htonl(0x1));
227 static inline void ipv6_addr_all_routers(struct in6_addr *addr)
229 ipv6_addr_set(addr, htonl(0xFF020000), 0, 0, htonl(0x2));
232 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
234 return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000);
237 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
239 return (addr->s6_addr32[0] == htonl(0xff020000) &&
240 addr->s6_addr32[1] == 0 &&
241 addr->s6_addr32[2] == 0 &&
242 addr->s6_addr32[3] == htonl(0x00000001));
245 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
247 return (addr->s6_addr32[0] == htonl(0xff020000) &&
248 addr->s6_addr32[1] == 0 &&
249 addr->s6_addr32[2] == 0 &&
250 addr->s6_addr32[3] == htonl(0x00000002));
253 static inline int ipv6_isatap_eui64(u8 *eui, __be32 addr)
255 eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) ||
256 ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) ||
257 ipv4_is_private_172(addr) || ipv4_is_test_192(addr) ||
258 ipv4_is_anycast_6to4(addr) || ipv4_is_private_192(addr) ||
259 ipv4_is_test_198(addr) || ipv4_is_multicast(addr) ||
260 ipv4_is_lbcast(addr)) ? 0x00 : 0x02;
264 memcpy (eui+4, &addr, 4);
268 static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
270 return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
273 #ifdef CONFIG_PROC_FS
274 extern int if6_proc_init(void);
275 extern void if6_proc_exit(void);