4 #define RETRANS_TIMER HZ
6 #define MAX_RTR_SOLICITATIONS 3
7 #define RTR_SOLICITATION_INTERVAL (4*HZ)
9 #define TEMP_VALID_LIFETIME (7*86400)
10 #define TEMP_PREFERRED_LIFETIME (86400)
11 #define REGEN_MAX_RETRY (5)
12 #define MAX_DESYNC_FACTOR (600)
14 #define ADDR_CHECK_FREQUENCY (120*HZ)
21 #if defined(__BIG_ENDIAN_BITFIELD)
25 #elif defined(__LITTLE_ENDIAN_BITFIELD)
30 #error "Please fix <asm/byteorder.h>"
36 struct in6_addr prefix
;
42 #include <linux/in6.h>
43 #include <linux/netdevice.h>
44 #include <net/if_inet6.h>
46 #define IN6_ADDR_HSIZE 16
48 extern void addrconf_init(void);
49 extern void addrconf_cleanup(void);
51 extern int addrconf_notify(struct notifier_block
*this,
55 extern int addrconf_add_ifaddr(void *arg
);
56 extern int addrconf_del_ifaddr(void *arg
);
57 extern int addrconf_set_dstaddr(void *arg
);
59 extern int ipv6_chk_addr(struct in6_addr
*addr
,
60 struct net_device
*dev
);
61 extern struct inet6_ifaddr
* ipv6_get_ifaddr(struct in6_addr
*addr
,
62 struct net_device
*dev
);
63 extern int ipv6_get_saddr(struct dst_entry
*dst
,
64 struct in6_addr
*daddr
,
65 struct in6_addr
*saddr
);
66 extern int ipv6_dev_get_saddr(struct net_device
*dev
,
67 struct in6_addr
*daddr
,
68 struct in6_addr
*saddr
,
70 extern int ipv6_get_lladdr(struct net_device
*dev
, struct in6_addr
*);
71 extern int ipv6_rcv_saddr_equal(const struct sock
*sk
,
72 const struct sock
*sk2
);
73 extern void addrconf_join_solict(struct net_device
*dev
,
74 struct in6_addr
*addr
);
75 extern void addrconf_leave_solict(struct net_device
*dev
,
76 struct in6_addr
*addr
);
79 * multicast prototypes (mcast.c)
81 extern int ipv6_sock_mc_join(struct sock
*sk
, int ifindex
,
82 struct in6_addr
*addr
);
83 extern int ipv6_sock_mc_drop(struct sock
*sk
, int ifindex
,
84 struct in6_addr
*addr
);
85 extern void ipv6_sock_mc_close(struct sock
*sk
);
86 extern int inet6_mc_check(struct sock
*sk
, struct in6_addr
*mc_addr
,
87 struct in6_addr
*src_addr
);
89 extern int ipv6_dev_mc_inc(struct net_device
*dev
, struct in6_addr
*addr
);
90 extern int ipv6_dev_mc_dec(struct net_device
*dev
, struct in6_addr
*addr
);
91 extern void ipv6_mc_up(struct inet6_dev
*idev
);
92 extern void ipv6_mc_down(struct inet6_dev
*idev
);
93 extern void ipv6_mc_init_dev(struct inet6_dev
*idev
);
94 extern void ipv6_mc_destroy_dev(struct inet6_dev
*idev
);
95 extern void addrconf_dad_failure(struct inet6_ifaddr
*ifp
);
97 extern int ipv6_chk_mcast_addr(struct net_device
*dev
, struct in6_addr
*group
,
98 struct in6_addr
*src_addr
);
100 extern void addrconf_prefix_rcv(struct net_device
*dev
, u8
*opt
, int len
);
103 * anycast prototypes (anycast.c)
105 extern int ipv6_sock_ac_join(struct sock
*sk
,int ifindex
,struct in6_addr
*addr
);
106 extern int ipv6_sock_ac_drop(struct sock
*sk
,int ifindex
,struct in6_addr
*addr
);
107 extern void ipv6_sock_ac_close(struct sock
*sk
);
108 extern int inet6_ac_check(struct sock
*sk
, struct in6_addr
*addr
, int ifindex
);
110 extern int ipv6_dev_ac_inc(struct net_device
*dev
, struct in6_addr
*addr
);
111 extern int ipv6_dev_ac_dec(struct net_device
*dev
, struct in6_addr
*addr
);
112 extern int ipv6_chk_acast_addr(struct net_device
*dev
, struct in6_addr
*addr
);
115 /* Device notifier */
116 extern int register_inet6addr_notifier(struct notifier_block
*nb
);
117 extern int unregister_inet6addr_notifier(struct notifier_block
*nb
);
119 static inline struct inet6_dev
*
120 __in6_dev_get(struct net_device
*dev
)
122 return (struct inet6_dev
*)dev
->ip6_ptr
;
125 extern rwlock_t addrconf_lock
;
127 static inline struct inet6_dev
*
128 in6_dev_get(struct net_device
*dev
)
130 struct inet6_dev
*idev
= NULL
;
131 read_lock(&addrconf_lock
);
134 atomic_inc(&idev
->refcnt
);
135 read_unlock(&addrconf_lock
);
139 extern void in6_dev_finish_destroy(struct inet6_dev
*idev
);
142 in6_dev_put(struct inet6_dev
*idev
)
144 if (atomic_dec_and_test(&idev
->refcnt
))
145 in6_dev_finish_destroy(idev
);
148 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
149 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
152 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr
*ifp
);
154 static inline void in6_ifa_put(struct inet6_ifaddr
*ifp
)
156 if (atomic_dec_and_test(&ifp
->refcnt
))
157 inet6_ifa_finish_destroy(ifp
);
160 #define __in6_ifa_put(idev) atomic_dec(&(idev)->refcnt)
161 #define in6_ifa_hold(idev) atomic_inc(&(idev)->refcnt)
164 extern void addrconf_forwarding_on(void);
166 * Hash function taken from net_alias.c
169 static __inline__ u8
ipv6_addr_hash(const struct in6_addr
*addr
)
174 * We perform the hash function over the last 64 bits of the address
175 * This will include the IEEE address token on links that support it.
178 word
= addr
->s6_addr
[2] ^ addr
->s6_addr32
[3];
182 return ((word
^ (word
>> 4)) & 0x0f);
186 * compute link-local solicited-node multicast address
189 static inline void addrconf_addr_solict_mult(const struct in6_addr
*addr
,
190 struct in6_addr
*solicited
)
192 ipv6_addr_set(solicited
,
193 __constant_htonl(0xFF020000), 0,
194 __constant_htonl(0x1),
195 __constant_htonl(0xFF000000) | addr
->s6_addr32
[3]);
199 static inline void ipv6_addr_all_nodes(struct in6_addr
*addr
)
202 __constant_htonl(0xFF020000), 0, 0,
203 __constant_htonl(0x1));
206 static inline void ipv6_addr_all_routers(struct in6_addr
*addr
)
209 __constant_htonl(0xFF020000), 0, 0,
210 __constant_htonl(0x2));
213 static inline int ipv6_addr_is_multicast(const struct in6_addr
*addr
)
215 return (addr
->s6_addr32
[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000);
218 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr
*addr
)
220 return (addr
->s6_addr32
[0] == htonl(0xff020000) &&
221 addr
->s6_addr32
[1] == 0 &&
222 addr
->s6_addr32
[2] == 0 &&
223 addr
->s6_addr32
[3] == htonl(0x00000001));
226 static inline int ipv6_addr_is_ll_all_routers(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(0x00000002));