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(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 net *net,
63 struct in6_addr *addr,
64 struct net_device *dev,
67 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
68 extern int ipv6_chk_home_addr(struct in6_addr *addr);
70 extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
71 struct net_device *dev,
73 extern int ipv6_get_saddr(struct dst_entry *dst,
74 struct in6_addr *daddr,
75 struct in6_addr *saddr);
76 extern int ipv6_dev_get_saddr(struct net_device *dev,
77 struct in6_addr *daddr,
78 struct in6_addr *saddr);
79 extern int ipv6_get_lladdr(struct net_device *dev,
80 struct in6_addr *addr,
81 unsigned char banned_flags);
82 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
83 const struct sock *sk2);
84 extern void addrconf_join_solict(struct net_device *dev,
85 struct in6_addr *addr);
86 extern void addrconf_leave_solict(struct inet6_dev *idev,
87 struct in6_addr *addr);
90 * IPv6 Address Label subsystem (addrlabel.c)
92 extern int ipv6_addr_label_init(void);
93 extern void ipv6_addr_label_rtnl_register(void);
94 extern u32 ipv6_addr_label(const struct in6_addr *addr,
95 int type, int ifindex);
98 * multicast prototypes (mcast.c)
100 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
101 struct in6_addr *addr);
102 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
103 struct in6_addr *addr);
104 extern void ipv6_sock_mc_close(struct sock *sk);
105 extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
106 struct in6_addr *src_addr);
108 extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
109 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
110 extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
111 extern void ipv6_mc_up(struct inet6_dev *idev);
112 extern void ipv6_mc_down(struct inet6_dev *idev);
113 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
114 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
115 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
117 extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
118 struct in6_addr *src_addr);
119 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
121 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
123 extern int ipv6_get_hoplimit(struct net_device *dev);
126 * anycast prototypes (anycast.c)
128 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
129 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
130 extern void ipv6_sock_ac_close(struct sock *sk);
131 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
133 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
134 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
135 extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
138 /* Device notifier */
139 extern int register_inet6addr_notifier(struct notifier_block *nb);
140 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
142 static inline struct inet6_dev *
143 __in6_dev_get(struct net_device *dev)
145 return rcu_dereference(dev->ip6_ptr);
148 static inline struct inet6_dev *
149 in6_dev_get(struct net_device *dev)
151 struct inet6_dev *idev = NULL;
153 idev = __in6_dev_get(dev);
155 atomic_inc(&idev->refcnt);
160 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
163 in6_dev_put(struct inet6_dev *idev)
165 if (atomic_dec_and_test(&idev->refcnt))
166 in6_dev_finish_destroy(idev);
169 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
170 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
173 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
175 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
177 if (atomic_dec_and_test(&ifp->refcnt))
178 inet6_ifa_finish_destroy(ifp);
181 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
182 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
185 extern void addrconf_forwarding_on(void);
187 * Hash function taken from net_alias.c
190 static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
195 * We perform the hash function over the last 64 bits of the address
196 * This will include the IEEE address token on links that support it.
199 word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]);
200 word ^= (word >> 16);
203 return ((word ^ (word >> 4)) & 0x0f);
207 * compute link-local solicited-node multicast address
210 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
211 struct in6_addr *solicited)
213 ipv6_addr_set(solicited,
214 __constant_htonl(0xFF020000), 0,
215 __constant_htonl(0x1),
216 __constant_htonl(0xFF000000) | addr->s6_addr32[3]);
220 static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
223 __constant_htonl(0xFF020000), 0, 0,
224 __constant_htonl(0x1));
227 static inline void ipv6_addr_all_routers(struct in6_addr *addr)
230 __constant_htonl(0xFF020000), 0, 0,
231 __constant_htonl(0x2));
234 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
236 return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000);
239 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
241 return (addr->s6_addr32[0] == htonl(0xff020000) &&
242 addr->s6_addr32[1] == 0 &&
243 addr->s6_addr32[2] == 0 &&
244 addr->s6_addr32[3] == htonl(0x00000001));
247 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
249 return (addr->s6_addr32[0] == htonl(0xff020000) &&
250 addr->s6_addr32[1] == 0 &&
251 addr->s6_addr32[2] == 0 &&
252 addr->s6_addr32[3] == htonl(0x00000002));
255 static inline int ipv6_isatap_eui64(u8 *eui, __be32 addr)
257 eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) ||
258 ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) ||
259 ipv4_is_private_172(addr) || ipv4_is_test_192(addr) ||
260 ipv4_is_anycast_6to4(addr) || ipv4_is_private_192(addr) ||
261 ipv4_is_test_198(addr) || ipv4_is_multicast(addr) ||
262 ipv4_is_badclass(addr)) ? 0x00 : 0x02;
266 memcpy (eui+4, &addr, 4);
270 static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
272 return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
275 #ifdef CONFIG_PROC_FS
276 extern int if6_proc_init(void);
277 extern void if6_proc_exit(void);