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(void __user *arg);
59 extern int addrconf_del_ifaddr(void __user *arg);
60 extern int addrconf_set_dstaddr(void __user *arg);
62 extern int ipv6_chk_addr(struct in6_addr *addr,
63 struct net_device *dev,
65 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
66 extern int ipv6_chk_home_addr(struct in6_addr *addr);
68 extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
69 struct net_device *dev,
71 extern int ipv6_get_saddr(struct dst_entry *dst,
72 struct in6_addr *daddr,
73 struct in6_addr *saddr);
74 extern int ipv6_dev_get_saddr(struct net_device *dev,
75 struct in6_addr *daddr,
76 struct in6_addr *saddr);
77 extern int ipv6_get_lladdr(struct net_device *dev,
78 struct in6_addr *addr,
79 unsigned char banned_flags);
80 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
81 const struct sock *sk2);
82 extern void addrconf_join_solict(struct net_device *dev,
83 struct in6_addr *addr);
84 extern void addrconf_leave_solict(struct inet6_dev *idev,
85 struct in6_addr *addr);
88 * IPv6 Address Label subsystem (addrlabel.c)
90 extern int ipv6_addr_label_init(void);
91 extern void ipv6_addr_label_rtnl_register(void);
92 extern u32 ipv6_addr_label(const struct in6_addr *addr,
93 int type, int ifindex);
96 * multicast prototypes (mcast.c)
98 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
99 struct in6_addr *addr);
100 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
101 struct in6_addr *addr);
102 extern void ipv6_sock_mc_close(struct sock *sk);
103 extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
104 struct in6_addr *src_addr);
106 extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
107 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
108 extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
109 extern void ipv6_mc_up(struct inet6_dev *idev);
110 extern void ipv6_mc_down(struct inet6_dev *idev);
111 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
112 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
113 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
115 extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
116 struct in6_addr *src_addr);
117 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
119 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
121 extern int ipv6_get_hoplimit(struct net_device *dev);
124 * anycast prototypes (anycast.c)
126 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
127 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
128 extern void ipv6_sock_ac_close(struct sock *sk);
129 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
131 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
132 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
133 extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
136 /* Device notifier */
137 extern int register_inet6addr_notifier(struct notifier_block *nb);
138 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
140 static inline struct inet6_dev *
141 __in6_dev_get(struct net_device *dev)
143 return rcu_dereference(dev->ip6_ptr);
146 static inline struct inet6_dev *
147 in6_dev_get(struct net_device *dev)
149 struct inet6_dev *idev = NULL;
151 idev = __in6_dev_get(dev);
153 atomic_inc(&idev->refcnt);
158 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
161 in6_dev_put(struct inet6_dev *idev)
163 if (atomic_dec_and_test(&idev->refcnt))
164 in6_dev_finish_destroy(idev);
167 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
168 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
171 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
173 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
175 if (atomic_dec_and_test(&ifp->refcnt))
176 inet6_ifa_finish_destroy(ifp);
179 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
180 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
183 extern void addrconf_forwarding_on(void);
185 * Hash function taken from net_alias.c
188 static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
193 * We perform the hash function over the last 64 bits of the address
194 * This will include the IEEE address token on links that support it.
197 word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]);
198 word ^= (word >> 16);
201 return ((word ^ (word >> 4)) & 0x0f);
205 * compute link-local solicited-node multicast address
208 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
209 struct in6_addr *solicited)
211 ipv6_addr_set(solicited,
212 __constant_htonl(0xFF020000), 0,
213 __constant_htonl(0x1),
214 __constant_htonl(0xFF000000) | addr->s6_addr32[3]);
218 static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
221 __constant_htonl(0xFF020000), 0, 0,
222 __constant_htonl(0x1));
225 static inline void ipv6_addr_all_routers(struct in6_addr *addr)
228 __constant_htonl(0xFF020000), 0, 0,
229 __constant_htonl(0x2));
232 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
234 return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_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] = (ZERONET(addr) || PRIVATE_10(addr) || LOOPBACK(addr) ||
256 LINKLOCAL_169(addr) || PRIVATE_172(addr) || TEST_192(addr) ||
257 ANYCAST_6TO4(addr) || PRIVATE_192(addr) || TEST_198(addr) ||
258 MULTICAST(addr) || BADCLASS(addr)) ? 0x00 : 0x02;
262 memcpy (eui+4, &addr, 4);
266 static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
268 return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
271 #ifdef CONFIG_PROC_FS
272 extern int if6_proc_init(void);
273 extern void if6_proc_exit(void);