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 #ifdef CONFIG_IPV6_MIP6
65 extern int ipv6_chk_home_addr(struct in6_addr
*addr
);
67 extern struct inet6_ifaddr
* ipv6_get_ifaddr(struct in6_addr
*addr
,
68 struct net_device
*dev
,
70 extern int ipv6_get_saddr(struct dst_entry
*dst
,
71 struct in6_addr
*daddr
,
72 struct in6_addr
*saddr
);
73 extern int ipv6_dev_get_saddr(struct net_device
*dev
,
74 struct in6_addr
*daddr
,
75 struct in6_addr
*saddr
);
76 extern int ipv6_get_lladdr(struct net_device
*dev
, struct in6_addr
*);
77 extern int ipv6_rcv_saddr_equal(const struct sock
*sk
,
78 const struct sock
*sk2
);
79 extern void addrconf_join_solict(struct net_device
*dev
,
80 struct in6_addr
*addr
);
81 extern void addrconf_leave_solict(struct inet6_dev
*idev
,
82 struct in6_addr
*addr
);
85 * multicast prototypes (mcast.c)
87 extern int ipv6_sock_mc_join(struct sock
*sk
, int ifindex
,
88 struct in6_addr
*addr
);
89 extern int ipv6_sock_mc_drop(struct sock
*sk
, int ifindex
,
90 struct in6_addr
*addr
);
91 extern void ipv6_sock_mc_close(struct sock
*sk
);
92 extern int inet6_mc_check(struct sock
*sk
, struct in6_addr
*mc_addr
,
93 struct in6_addr
*src_addr
);
95 extern int ipv6_dev_mc_inc(struct net_device
*dev
, struct in6_addr
*addr
);
96 extern int __ipv6_dev_mc_dec(struct inet6_dev
*idev
, struct in6_addr
*addr
);
97 extern int ipv6_dev_mc_dec(struct net_device
*dev
, struct in6_addr
*addr
);
98 extern void ipv6_mc_up(struct inet6_dev
*idev
);
99 extern void ipv6_mc_down(struct inet6_dev
*idev
);
100 extern void ipv6_mc_init_dev(struct inet6_dev
*idev
);
101 extern void ipv6_mc_destroy_dev(struct inet6_dev
*idev
);
102 extern void addrconf_dad_failure(struct inet6_ifaddr
*ifp
);
104 extern int ipv6_chk_mcast_addr(struct net_device
*dev
, struct in6_addr
*group
,
105 struct in6_addr
*src_addr
);
106 extern int ipv6_is_mld(struct sk_buff
*skb
, int nexthdr
);
108 extern void addrconf_prefix_rcv(struct net_device
*dev
, u8
*opt
, int len
);
110 extern int ipv6_get_hoplimit(struct net_device
*dev
);
113 * anycast prototypes (anycast.c)
115 extern int ipv6_sock_ac_join(struct sock
*sk
,int ifindex
,struct in6_addr
*addr
);
116 extern int ipv6_sock_ac_drop(struct sock
*sk
,int ifindex
,struct in6_addr
*addr
);
117 extern void ipv6_sock_ac_close(struct sock
*sk
);
118 extern int inet6_ac_check(struct sock
*sk
, struct in6_addr
*addr
, int ifindex
);
120 extern int ipv6_dev_ac_inc(struct net_device
*dev
, struct in6_addr
*addr
);
121 extern int __ipv6_dev_ac_dec(struct inet6_dev
*idev
, struct in6_addr
*addr
);
122 extern int ipv6_chk_acast_addr(struct net_device
*dev
, struct in6_addr
*addr
);
125 /* Device notifier */
126 extern int register_inet6addr_notifier(struct notifier_block
*nb
);
127 extern int unregister_inet6addr_notifier(struct notifier_block
*nb
);
129 static inline struct inet6_dev
*
130 __in6_dev_get(struct net_device
*dev
)
132 return rcu_dereference(dev
->ip6_ptr
);
135 static inline struct inet6_dev
*
136 in6_dev_get(struct net_device
*dev
)
138 struct inet6_dev
*idev
= NULL
;
140 idev
= __in6_dev_get(dev
);
142 atomic_inc(&idev
->refcnt
);
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);