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
21 #include <linux/in6.h>
28 #if defined(__BIG_ENDIAN_BITFIELD)
32 #elif defined(__LITTLE_ENDIAN_BITFIELD)
37 #error "Please fix <asm/byteorder.h>"
43 struct in6_addr prefix;
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(struct net *net,
60 extern int addrconf_del_ifaddr(struct net *net,
62 extern int addrconf_set_dstaddr(struct net *net,
65 extern int ipv6_chk_addr(struct net *net,
66 struct in6_addr *addr,
67 struct net_device *dev,
70 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
71 extern int ipv6_chk_home_addr(struct net *net,
72 struct in6_addr *addr);
74 extern struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net,
75 struct in6_addr *addr,
76 struct net_device *dev,
79 extern int ipv6_dev_get_saddr(struct net_device *dev,
80 struct in6_addr *daddr,
81 struct in6_addr *saddr);
82 extern int ipv6_get_lladdr(struct net_device *dev,
83 struct in6_addr *addr,
84 unsigned char banned_flags);
85 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
86 const struct sock *sk2);
87 extern void addrconf_join_solict(struct net_device *dev,
88 struct in6_addr *addr);
89 extern void addrconf_leave_solict(struct inet6_dev *idev,
90 struct in6_addr *addr);
93 * IPv6 Address Label subsystem (addrlabel.c)
95 extern int ipv6_addr_label_init(void);
96 extern void ipv6_addr_label_rtnl_register(void);
97 extern u32 ipv6_addr_label(const struct in6_addr *addr,
98 int type, int ifindex);
101 * multicast prototypes (mcast.c)
103 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
104 struct in6_addr *addr);
105 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
106 struct in6_addr *addr);
107 extern void ipv6_sock_mc_close(struct sock *sk);
108 extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
109 struct in6_addr *src_addr);
111 extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
112 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
113 extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
114 extern void ipv6_mc_up(struct inet6_dev *idev);
115 extern void ipv6_mc_down(struct inet6_dev *idev);
116 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
117 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
118 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
120 extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
121 struct in6_addr *src_addr);
122 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
124 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
127 * anycast prototypes (anycast.c)
129 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
130 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
131 extern void ipv6_sock_ac_close(struct sock *sk);
132 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
134 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
135 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
136 extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
139 /* Device notifier */
140 extern int register_inet6addr_notifier(struct notifier_block *nb);
141 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
143 static inline struct inet6_dev *
144 __in6_dev_get(struct net_device *dev)
146 return rcu_dereference(dev->ip6_ptr);
149 static inline struct inet6_dev *
150 in6_dev_get(struct net_device *dev)
152 struct inet6_dev *idev = NULL;
154 idev = __in6_dev_get(dev);
156 atomic_inc(&idev->refcnt);
161 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
164 in6_dev_put(struct inet6_dev *idev)
166 if (atomic_dec_and_test(&idev->refcnt))
167 in6_dev_finish_destroy(idev);
170 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
171 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
174 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
176 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
178 if (atomic_dec_and_test(&ifp->refcnt))
179 inet6_ifa_finish_destroy(ifp);
182 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
183 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
186 extern void addrconf_forwarding_on(void);
188 * Hash function taken from net_alias.c
191 static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
196 * We perform the hash function over the last 64 bits of the address
197 * This will include the IEEE address token on links that support it.
200 word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]);
201 word ^= (word >> 16);
204 return ((word ^ (word >> 4)) & 0x0f);
208 * compute link-local solicited-node multicast address
211 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
212 struct in6_addr *solicited)
214 ipv6_addr_set(solicited,
215 htonl(0xFF020000), 0,
217 htonl(0xFF000000) | addr->s6_addr32[3]);
221 static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
223 ipv6_addr_set(addr, htonl(0xFF020000), 0, 0, htonl(0x1));
226 static inline void ipv6_addr_all_routers(struct in6_addr *addr)
228 ipv6_addr_set(addr, htonl(0xFF020000), 0, 0, htonl(0x2));
231 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
233 return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000);
236 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
238 return (addr->s6_addr32[0] == htonl(0xff020000) &&
239 addr->s6_addr32[1] == 0 &&
240 addr->s6_addr32[2] == 0 &&
241 addr->s6_addr32[3] == htonl(0x00000001));
244 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
246 return (addr->s6_addr32[0] == htonl(0xff020000) &&
247 addr->s6_addr32[1] == 0 &&
248 addr->s6_addr32[2] == 0 &&
249 addr->s6_addr32[3] == htonl(0x00000002));
252 static inline int ipv6_isatap_eui64(u8 *eui, __be32 addr)
254 eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) ||
255 ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) ||
256 ipv4_is_private_172(addr) || ipv4_is_test_192(addr) ||
257 ipv4_is_anycast_6to4(addr) || ipv4_is_private_192(addr) ||
258 ipv4_is_test_198(addr) || ipv4_is_multicast(addr) ||
259 ipv4_is_lbcast(addr)) ? 0x00 : 0x02;
263 memcpy (eui+4, &addr, 4);
267 static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
269 return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
272 #ifdef CONFIG_PROC_FS
273 extern int if6_proc_init(void);
274 extern void if6_proc_exit(void);