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
20 #include <linux/in6.h>
27 #if defined(__BIG_ENDIAN_BITFIELD)
31 #elif defined(__LITTLE_ENDIAN_BITFIELD)
36 #error "Please fix <asm/byteorder.h>"
42 struct in6_addr prefix;
48 #include <linux/netdevice.h>
49 #include <net/if_inet6.h>
52 #define IN6_ADDR_HSIZE 16
54 extern int addrconf_init(void);
55 extern void addrconf_cleanup(void);
57 extern int addrconf_add_ifaddr(void __user *arg);
58 extern int addrconf_del_ifaddr(void __user *arg);
59 extern int addrconf_set_dstaddr(void __user *arg);
61 extern int ipv6_chk_addr(struct in6_addr *addr,
62 struct net_device *dev,
64 /* XXX: this is a placeholder till addrconf supports */
65 #ifdef CONFIG_IPV6_MIP6
66 static inline int ipv6_chk_home_addr(struct in6_addr *addr)
71 extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
72 struct net_device *dev,
74 extern int ipv6_get_saddr(struct dst_entry *dst,
75 struct in6_addr *daddr,
76 struct in6_addr *saddr);
77 extern int ipv6_dev_get_saddr(struct net_device *dev,
78 struct in6_addr *daddr,
79 struct in6_addr *saddr);
80 extern int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *);
81 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
82 const struct sock *sk2);
83 extern void addrconf_join_solict(struct net_device *dev,
84 struct in6_addr *addr);
85 extern void addrconf_leave_solict(struct inet6_dev *idev,
86 struct in6_addr *addr);
89 * multicast prototypes (mcast.c)
91 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
92 struct in6_addr *addr);
93 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
94 struct in6_addr *addr);
95 extern void ipv6_sock_mc_close(struct sock *sk);
96 extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
97 struct in6_addr *src_addr);
99 extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
100 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
101 extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
102 extern void ipv6_mc_up(struct inet6_dev *idev);
103 extern void ipv6_mc_down(struct inet6_dev *idev);
104 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
105 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
106 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
108 extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
109 struct in6_addr *src_addr);
110 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
112 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
114 extern int ipv6_get_hoplimit(struct net_device *dev);
117 * anycast prototypes (anycast.c)
119 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
120 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
121 extern void ipv6_sock_ac_close(struct sock *sk);
122 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
124 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
125 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
126 extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
129 /* Device notifier */
130 extern int register_inet6addr_notifier(struct notifier_block *nb);
131 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
133 static inline struct inet6_dev *
134 __in6_dev_get(struct net_device *dev)
136 return rcu_dereference(dev->ip6_ptr);
139 static inline struct inet6_dev *
140 in6_dev_get(struct net_device *dev)
142 struct inet6_dev *idev = NULL;
144 idev = __in6_dev_get(dev);
146 atomic_inc(&idev->refcnt);
151 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
154 in6_dev_put(struct inet6_dev *idev)
156 if (atomic_dec_and_test(&idev->refcnt))
157 in6_dev_finish_destroy(idev);
160 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
161 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
164 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
166 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
168 if (atomic_dec_and_test(&ifp->refcnt))
169 inet6_ifa_finish_destroy(ifp);
172 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
173 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
176 extern void addrconf_forwarding_on(void);
178 * Hash function taken from net_alias.c
181 static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
186 * We perform the hash function over the last 64 bits of the address
187 * This will include the IEEE address token on links that support it.
190 word = addr->s6_addr32[2] ^ addr->s6_addr32[3];
191 word ^= (word >> 16);
194 return ((word ^ (word >> 4)) & 0x0f);
198 * compute link-local solicited-node multicast address
201 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
202 struct in6_addr *solicited)
204 ipv6_addr_set(solicited,
205 __constant_htonl(0xFF020000), 0,
206 __constant_htonl(0x1),
207 __constant_htonl(0xFF000000) | addr->s6_addr32[3]);
211 static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
214 __constant_htonl(0xFF020000), 0, 0,
215 __constant_htonl(0x1));
218 static inline void ipv6_addr_all_routers(struct in6_addr *addr)
221 __constant_htonl(0xFF020000), 0, 0,
222 __constant_htonl(0x2));
225 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
227 return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000);
230 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
232 return (addr->s6_addr32[0] == htonl(0xff020000) &&
233 addr->s6_addr32[1] == 0 &&
234 addr->s6_addr32[2] == 0 &&
235 addr->s6_addr32[3] == htonl(0x00000001));
238 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
240 return (addr->s6_addr32[0] == htonl(0xff020000) &&
241 addr->s6_addr32[1] == 0 &&
242 addr->s6_addr32[2] == 0 &&
243 addr->s6_addr32[3] == htonl(0x00000002));
246 #ifdef CONFIG_PROC_FS
247 extern int if6_proc_init(void);
248 extern void if6_proc_exit(void);