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
25 #if defined(__BIG_ENDIAN_BITFIELD)
29 #elif defined(__LITTLE_ENDIAN_BITFIELD)
34 #error "Please fix <asm/byteorder.h>"
40 struct in6_addr prefix;
46 #include <linux/in6.h>
47 #include <linux/netdevice.h>
48 #include <net/if_inet6.h>
51 #define IN6_ADDR_HSIZE 16
53 extern int addrconf_init(void);
54 extern void addrconf_cleanup(void);
56 extern int addrconf_add_ifaddr(void __user *arg);
57 extern int addrconf_del_ifaddr(void __user *arg);
58 extern int addrconf_set_dstaddr(void __user *arg);
60 extern int ipv6_chk_addr(struct in6_addr *addr,
61 struct net_device *dev,
63 extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
64 struct net_device *dev,
66 extern int ipv6_get_saddr(struct dst_entry *dst,
67 struct in6_addr *daddr,
68 struct in6_addr *saddr);
69 extern int ipv6_dev_get_saddr(struct net_device *dev,
70 struct in6_addr *daddr,
71 struct in6_addr *saddr);
72 extern int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *);
73 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
74 const struct sock *sk2);
75 extern void addrconf_join_solict(struct net_device *dev,
76 struct in6_addr *addr);
77 extern void addrconf_leave_solict(struct inet6_dev *idev,
78 struct in6_addr *addr);
81 * multicast prototypes (mcast.c)
83 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
84 struct in6_addr *addr);
85 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
86 struct in6_addr *addr);
87 extern void ipv6_sock_mc_close(struct sock *sk);
88 extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
89 struct in6_addr *src_addr);
91 extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
92 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
93 extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
94 extern void ipv6_mc_up(struct inet6_dev *idev);
95 extern void ipv6_mc_down(struct inet6_dev *idev);
96 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
97 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
98 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
100 extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
101 struct in6_addr *src_addr);
102 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
104 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
106 extern int ipv6_get_hoplimit(struct net_device *dev);
109 * anycast prototypes (anycast.c)
111 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
112 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
113 extern void ipv6_sock_ac_close(struct sock *sk);
114 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
116 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
117 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
118 extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
121 /* Device notifier */
122 extern int register_inet6addr_notifier(struct notifier_block *nb);
123 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
125 static inline struct inet6_dev *
126 __in6_dev_get(struct net_device *dev)
128 return (struct inet6_dev *)dev->ip6_ptr;
131 extern rwlock_t addrconf_lock;
133 static inline struct inet6_dev *
134 in6_dev_get(struct net_device *dev)
136 struct inet6_dev *idev = NULL;
137 read_lock(&addrconf_lock);
140 atomic_inc(&idev->refcnt);
141 read_unlock(&addrconf_lock);
145 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
148 in6_dev_put(struct inet6_dev *idev)
150 if (atomic_dec_and_test(&idev->refcnt))
151 in6_dev_finish_destroy(idev);
154 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
155 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
158 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
160 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
162 if (atomic_dec_and_test(&ifp->refcnt))
163 inet6_ifa_finish_destroy(ifp);
166 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
167 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
170 extern void addrconf_forwarding_on(void);
172 * Hash function taken from net_alias.c
175 static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
180 * We perform the hash function over the last 64 bits of the address
181 * This will include the IEEE address token on links that support it.
184 word = addr->s6_addr32[2] ^ addr->s6_addr32[3];
185 word ^= (word >> 16);
188 return ((word ^ (word >> 4)) & 0x0f);
192 * compute link-local solicited-node multicast address
195 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
196 struct in6_addr *solicited)
198 ipv6_addr_set(solicited,
199 __constant_htonl(0xFF020000), 0,
200 __constant_htonl(0x1),
201 __constant_htonl(0xFF000000) | addr->s6_addr32[3]);
205 static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
208 __constant_htonl(0xFF020000), 0, 0,
209 __constant_htonl(0x1));
212 static inline void ipv6_addr_all_routers(struct in6_addr *addr)
215 __constant_htonl(0xFF020000), 0, 0,
216 __constant_htonl(0x2));
219 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
221 return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000);
224 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
226 return (addr->s6_addr32[0] == htonl(0xff020000) &&
227 addr->s6_addr32[1] == 0 &&
228 addr->s6_addr32[2] == 0 &&
229 addr->s6_addr32[3] == htonl(0x00000001));
232 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
234 return (addr->s6_addr32[0] == htonl(0xff020000) &&
235 addr->s6_addr32[1] == 0 &&
236 addr->s6_addr32[2] == 0 &&
237 addr->s6_addr32[3] == htonl(0x00000002));