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 net *net,
71 struct in6_addr *addr,
72 struct net_device *dev,
75 extern int ipv6_get_saddr(struct dst_entry *dst,
76 struct in6_addr *daddr,
77 struct in6_addr *saddr);
78 extern int ipv6_dev_get_saddr(struct net_device *dev,
79 struct in6_addr *daddr,
80 struct in6_addr *saddr);
81 extern int ipv6_get_lladdr(struct net_device *dev,
82 struct in6_addr *addr,
83 unsigned char banned_flags);
84 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
85 const struct sock *sk2);
86 extern void addrconf_join_solict(struct net_device *dev,
87 struct in6_addr *addr);
88 extern void addrconf_leave_solict(struct inet6_dev *idev,
89 struct in6_addr *addr);
92 * IPv6 Address Label subsystem (addrlabel.c)
94 extern int ipv6_addr_label_init(void);
95 extern void ipv6_addr_label_rtnl_register(void);
96 extern u32 ipv6_addr_label(const struct in6_addr *addr,
97 int type, int ifindex);
100 * multicast prototypes (mcast.c)
102 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
103 struct in6_addr *addr);
104 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
105 struct in6_addr *addr);
106 extern void ipv6_sock_mc_close(struct sock *sk);
107 extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
108 struct in6_addr *src_addr);
110 extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
111 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
112 extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
113 extern void ipv6_mc_up(struct inet6_dev *idev);
114 extern void ipv6_mc_down(struct inet6_dev *idev);
115 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
116 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
117 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
119 extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
120 struct in6_addr *src_addr);
121 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
123 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
125 extern int ipv6_get_hoplimit(struct net_device *dev);
128 * anycast prototypes (anycast.c)
130 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
131 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
132 extern void ipv6_sock_ac_close(struct sock *sk);
133 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
135 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
136 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
137 extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
140 /* Device notifier */
141 extern int register_inet6addr_notifier(struct notifier_block *nb);
142 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
144 static inline struct inet6_dev *
145 __in6_dev_get(struct net_device *dev)
147 return rcu_dereference(dev->ip6_ptr);
150 static inline struct inet6_dev *
151 in6_dev_get(struct net_device *dev)
153 struct inet6_dev *idev = NULL;
155 idev = __in6_dev_get(dev);
157 atomic_inc(&idev->refcnt);
162 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
165 in6_dev_put(struct inet6_dev *idev)
167 if (atomic_dec_and_test(&idev->refcnt))
168 in6_dev_finish_destroy(idev);
171 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
172 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
175 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
177 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
179 if (atomic_dec_and_test(&ifp->refcnt))
180 inet6_ifa_finish_destroy(ifp);
183 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
184 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
187 extern void addrconf_forwarding_on(void);
189 * Hash function taken from net_alias.c
192 static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
197 * We perform the hash function over the last 64 bits of the address
198 * This will include the IEEE address token on links that support it.
201 word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]);
202 word ^= (word >> 16);
205 return ((word ^ (word >> 4)) & 0x0f);
209 * compute link-local solicited-node multicast address
212 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
213 struct in6_addr *solicited)
215 ipv6_addr_set(solicited,
216 __constant_htonl(0xFF020000), 0,
217 __constant_htonl(0x1),
218 __constant_htonl(0xFF000000) | addr->s6_addr32[3]);
222 static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
225 __constant_htonl(0xFF020000), 0, 0,
226 __constant_htonl(0x1));
229 static inline void ipv6_addr_all_routers(struct in6_addr *addr)
232 __constant_htonl(0xFF020000), 0, 0,
233 __constant_htonl(0x2));
236 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
238 return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000);
241 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
243 return (addr->s6_addr32[0] == htonl(0xff020000) &&
244 addr->s6_addr32[1] == 0 &&
245 addr->s6_addr32[2] == 0 &&
246 addr->s6_addr32[3] == htonl(0x00000001));
249 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
251 return (addr->s6_addr32[0] == htonl(0xff020000) &&
252 addr->s6_addr32[1] == 0 &&
253 addr->s6_addr32[2] == 0 &&
254 addr->s6_addr32[3] == htonl(0x00000002));
257 static inline int ipv6_isatap_eui64(u8 *eui, __be32 addr)
259 eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) ||
260 ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) ||
261 ipv4_is_private_172(addr) || ipv4_is_test_192(addr) ||
262 ipv4_is_anycast_6to4(addr) || ipv4_is_private_192(addr) ||
263 ipv4_is_test_198(addr) || ipv4_is_multicast(addr) ||
264 ipv4_is_badclass(addr)) ? 0x00 : 0x02;
268 memcpy (eui+4, &addr, 4);
272 static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
274 return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
277 #ifdef CONFIG_PROC_FS
278 extern int if6_proc_init(void);
279 extern void if6_proc_exit(void);