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);
75 extern int ipv6_chk_prefix(struct in6_addr *addr,
76 struct net_device *dev);
78 extern struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net,
79 struct in6_addr *addr,
80 struct net_device *dev,
83 extern int ipv6_dev_get_saddr(struct net_device *dev,
84 struct in6_addr *daddr,
85 unsigned int srcprefs,
86 struct in6_addr *saddr);
87 extern int ipv6_get_lladdr(struct net_device *dev,
88 struct in6_addr *addr,
89 unsigned char banned_flags);
90 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
91 const struct sock *sk2);
92 extern void addrconf_join_solict(struct net_device *dev,
93 struct in6_addr *addr);
94 extern void addrconf_leave_solict(struct inet6_dev *idev,
95 struct in6_addr *addr);
98 * IPv6 Address Label subsystem (addrlabel.c)
100 extern int ipv6_addr_label_init(void);
101 extern void ipv6_addr_label_rtnl_register(void);
102 extern u32 ipv6_addr_label(const struct in6_addr *addr,
103 int type, int ifindex);
106 * multicast prototypes (mcast.c)
108 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
109 struct in6_addr *addr);
110 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
111 struct in6_addr *addr);
112 extern void ipv6_sock_mc_close(struct sock *sk);
113 extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
114 struct in6_addr *src_addr);
116 extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
117 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
118 extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
119 extern void ipv6_mc_up(struct inet6_dev *idev);
120 extern void ipv6_mc_down(struct inet6_dev *idev);
121 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
122 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
123 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
125 extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
126 struct in6_addr *src_addr);
127 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
129 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
132 * anycast prototypes (anycast.c)
134 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
135 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
136 extern void ipv6_sock_ac_close(struct sock *sk);
137 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
139 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
140 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
141 extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
142 struct in6_addr *addr);
145 /* Device notifier */
146 extern int register_inet6addr_notifier(struct notifier_block *nb);
147 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
149 static inline struct inet6_dev *
150 __in6_dev_get(struct net_device *dev)
152 return rcu_dereference(dev->ip6_ptr);
155 static inline struct inet6_dev *
156 in6_dev_get(struct net_device *dev)
158 struct inet6_dev *idev = NULL;
160 idev = __in6_dev_get(dev);
162 atomic_inc(&idev->refcnt);
167 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
170 in6_dev_put(struct inet6_dev *idev)
172 if (atomic_dec_and_test(&idev->refcnt))
173 in6_dev_finish_destroy(idev);
176 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
177 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
180 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
182 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
184 if (atomic_dec_and_test(&ifp->refcnt))
185 inet6_ifa_finish_destroy(ifp);
188 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
189 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
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 htonl(0xFF020000), 0,
203 htonl(0xFF000000) | addr->s6_addr32[3]);
207 static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
209 ipv6_addr_set(addr, htonl(0xFF020000), 0, 0, htonl(0x1));
212 static inline void ipv6_addr_all_routers(struct in6_addr *addr)
214 ipv6_addr_set(addr, htonl(0xFF020000), 0, 0, htonl(0x2));
217 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
219 return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000);
222 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
224 return (((addr->s6_addr32[0] ^ htonl(0xff020000)) |
225 addr->s6_addr32[1] | addr->s6_addr32[2] |
226 (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0);
229 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
231 return (((addr->s6_addr32[0] ^ htonl(0xff020000)) |
232 addr->s6_addr32[1] | addr->s6_addr32[2] |
233 (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0);
236 static inline int ipv6_isatap_eui64(u8 *eui, __be32 addr)
238 eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) ||
239 ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) ||
240 ipv4_is_private_172(addr) || ipv4_is_test_192(addr) ||
241 ipv4_is_anycast_6to4(addr) || ipv4_is_private_192(addr) ||
242 ipv4_is_test_198(addr) || ipv4_is_multicast(addr) ||
243 ipv4_is_lbcast(addr)) ? 0x00 : 0x02;
247 memcpy (eui+4, &addr, 4);
251 static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
253 return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
256 #ifdef CONFIG_PROC_FS
257 extern int if6_proc_init(void);
258 extern void if6_proc_exit(void);