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/config.h>
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 extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
66 struct net_device *dev,
68 extern int ipv6_get_saddr(struct dst_entry *dst,
69 struct in6_addr *daddr,
70 struct in6_addr *saddr);
71 extern int ipv6_dev_get_saddr(struct net_device *dev,
72 struct in6_addr *daddr,
73 struct in6_addr *saddr);
74 extern int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *);
75 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
76 const struct sock *sk2);
77 extern void addrconf_join_solict(struct net_device *dev,
78 struct in6_addr *addr);
79 extern void addrconf_leave_solict(struct inet6_dev *idev,
80 struct in6_addr *addr);
83 * multicast prototypes (mcast.c)
85 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
86 struct in6_addr *addr);
87 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
88 struct in6_addr *addr);
89 extern void ipv6_sock_mc_close(struct sock *sk);
90 extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
91 struct in6_addr *src_addr);
93 extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
94 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
95 extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
96 extern void ipv6_mc_up(struct inet6_dev *idev);
97 extern void ipv6_mc_down(struct inet6_dev *idev);
98 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
99 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
100 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
102 extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
103 struct in6_addr *src_addr);
104 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
106 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
108 extern int ipv6_get_hoplimit(struct net_device *dev);
111 * anycast prototypes (anycast.c)
113 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
114 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
115 extern void ipv6_sock_ac_close(struct sock *sk);
116 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
118 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
119 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
120 extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
123 /* Device notifier */
124 extern int register_inet6addr_notifier(struct notifier_block *nb);
125 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
127 static inline struct inet6_dev *
128 __in6_dev_get(struct net_device *dev)
130 return (struct inet6_dev *)dev->ip6_ptr;
133 extern rwlock_t addrconf_lock;
135 static inline struct inet6_dev *
136 in6_dev_get(struct net_device *dev)
138 struct inet6_dev *idev = NULL;
139 read_lock(&addrconf_lock);
142 atomic_inc(&idev->refcnt);
143 read_unlock(&addrconf_lock);
147 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
150 in6_dev_put(struct inet6_dev *idev)
152 if (atomic_dec_and_test(&idev->refcnt))
153 in6_dev_finish_destroy(idev);
156 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
157 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
160 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
162 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
164 if (atomic_dec_and_test(&ifp->refcnt))
165 inet6_ifa_finish_destroy(ifp);
168 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
169 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
172 extern void addrconf_forwarding_on(void);
174 * Hash function taken from net_alias.c
177 static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
182 * We perform the hash function over the last 64 bits of the address
183 * This will include the IEEE address token on links that support it.
186 word = addr->s6_addr32[2] ^ addr->s6_addr32[3];
187 word ^= (word >> 16);
190 return ((word ^ (word >> 4)) & 0x0f);
194 * compute link-local solicited-node multicast address
197 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
198 struct in6_addr *solicited)
200 ipv6_addr_set(solicited,
201 __constant_htonl(0xFF020000), 0,
202 __constant_htonl(0x1),
203 __constant_htonl(0xFF000000) | addr->s6_addr32[3]);
207 static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
210 __constant_htonl(0xFF020000), 0, 0,
211 __constant_htonl(0x1));
214 static inline void ipv6_addr_all_routers(struct in6_addr *addr)
217 __constant_htonl(0xFF020000), 0, 0,
218 __constant_htonl(0x2));
221 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
223 return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000);
226 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
228 return (addr->s6_addr32[0] == htonl(0xff020000) &&
229 addr->s6_addr32[1] == 0 &&
230 addr->s6_addr32[2] == 0 &&
231 addr->s6_addr32[3] == htonl(0x00000001));
234 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
236 return (addr->s6_addr32[0] == htonl(0xff020000) &&
237 addr->s6_addr32[1] == 0 &&
238 addr->s6_addr32[2] == 0 &&
239 addr->s6_addr32[3] == htonl(0x00000002));
242 #ifdef CONFIG_PROC_FS
243 extern int if6_proc_init(void);
244 extern void if6_proc_exit(void);