4 #define MAX_RTR_SOLICITATIONS 3
5 #define RTR_SOLICITATION_INTERVAL (4*HZ)
7 #define MIN_VALID_LIFETIME (2*3600) /* 2 hours */
9 #define TEMP_VALID_LIFETIME (7*86400)
10 #define TEMP_PREFERRED_LIFETIME (86400)
11 #define REGEN_MAX_RETRY (3)
12 #define MAX_DESYNC_FACTOR (600)
14 #define ADDR_CHECK_FREQUENCY (120*HZ)
16 #define IPV6_MAX_ADDRESSES 16
19 #include <linux/in6.h>
26 #if defined(__BIG_ENDIAN_BITFIELD)
30 #elif defined(__LITTLE_ENDIAN_BITFIELD)
35 #error "Please fix <asm/byteorder.h>"
41 struct in6_addr prefix;
45 #include <linux/netdevice.h>
46 #include <net/if_inet6.h>
49 #define IN6_ADDR_HSIZE 16
51 extern int addrconf_init(void);
52 extern void addrconf_cleanup(void);
54 extern int addrconf_add_ifaddr(struct net *net,
56 extern int addrconf_del_ifaddr(struct net *net,
58 extern int addrconf_set_dstaddr(struct net *net,
61 extern int ipv6_chk_addr(struct net *net,
62 const struct in6_addr *addr,
63 struct net_device *dev,
66 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
67 extern int ipv6_chk_home_addr(struct net *net,
68 const struct in6_addr *addr);
71 extern int ipv6_chk_prefix(const struct in6_addr *addr,
72 struct net_device *dev);
74 extern struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net,
75 const struct in6_addr *addr,
76 struct net_device *dev,
79 extern int ipv6_dev_get_saddr(struct net *net,
80 struct net_device *dev,
81 const struct in6_addr *daddr,
82 unsigned int srcprefs,
83 struct in6_addr *saddr);
84 extern int ipv6_get_lladdr(struct net_device *dev,
85 struct in6_addr *addr,
86 unsigned char banned_flags);
87 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
88 const struct sock *sk2);
89 extern void addrconf_join_solict(struct net_device *dev,
90 const struct in6_addr *addr);
91 extern void addrconf_leave_solict(struct inet6_dev *idev,
92 const struct in6_addr *addr);
94 static inline unsigned long addrconf_timeout_fixup(u32 timeout,
97 if (timeout == 0xffffffff)
101 * Avoid arithmetic overflow.
102 * Assuming unit is constant and non-zero, this "if" statement
103 * will go away on 64bit archs.
105 if (0xfffffffe > LONG_MAX / unit && timeout > LONG_MAX / unit)
106 return LONG_MAX / unit;
111 static inline int addrconf_finite_timeout(unsigned long timeout)
117 * IPv6 Address Label subsystem (addrlabel.c)
119 extern int ipv6_addr_label_init(void);
120 extern void ipv6_addr_label_cleanup(void);
121 extern void ipv6_addr_label_rtnl_register(void);
122 extern u32 ipv6_addr_label(struct net *net,
123 const struct in6_addr *addr,
124 int type, int ifindex);
127 * multicast prototypes (mcast.c)
129 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
130 const struct in6_addr *addr);
131 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
132 const struct in6_addr *addr);
133 extern void ipv6_sock_mc_close(struct sock *sk);
134 extern int inet6_mc_check(struct sock *sk,
135 const struct in6_addr *mc_addr,
136 const struct in6_addr *src_addr);
138 extern int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr);
139 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, const struct in6_addr *addr);
140 extern int ipv6_dev_mc_dec(struct net_device *dev, const struct in6_addr *addr);
141 extern void ipv6_mc_up(struct inet6_dev *idev);
142 extern void ipv6_mc_down(struct inet6_dev *idev);
143 extern void ipv6_mc_unmap(struct inet6_dev *idev);
144 extern void ipv6_mc_remap(struct inet6_dev *idev);
145 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
146 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
147 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
149 extern int ipv6_chk_mcast_addr(struct net_device *dev,
150 const struct in6_addr *group,
151 const struct in6_addr *src_addr);
152 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
154 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
157 * anycast prototypes (anycast.c)
159 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex, const struct in6_addr *addr);
160 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex, const struct in6_addr *addr);
161 extern void ipv6_sock_ac_close(struct sock *sk);
162 extern int inet6_ac_check(struct sock *sk, const struct in6_addr *addr, int ifindex);
164 extern int ipv6_dev_ac_inc(struct net_device *dev, const struct in6_addr *addr);
165 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, const struct in6_addr *addr);
166 extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
167 const struct in6_addr *addr);
170 /* Device notifier */
171 extern int register_inet6addr_notifier(struct notifier_block *nb);
172 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
175 * __in6_dev_get - get inet6_dev pointer from netdevice
176 * @dev: network device
178 * Caller must hold rcu_read_lock or RTNL, because this function
179 * does not take a reference on the inet6_dev.
181 static inline struct inet6_dev *__in6_dev_get(const struct net_device *dev)
183 return rcu_dereference_rtnl(dev->ip6_ptr);
187 * in6_dev_get - get inet6_dev pointer from netdevice
188 * @dev: network device
190 * This version can be used in any context, and takes a reference
191 * on the inet6_dev. Callers must use in6_dev_put() later to
192 * release this reference.
194 static inline struct inet6_dev *in6_dev_get(const struct net_device *dev)
196 struct inet6_dev *idev;
199 idev = rcu_dereference(dev->ip6_ptr);
201 atomic_inc(&idev->refcnt);
206 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
208 static inline void in6_dev_put(struct inet6_dev *idev)
210 if (atomic_dec_and_test(&idev->refcnt))
211 in6_dev_finish_destroy(idev);
214 static inline void __in6_dev_put(struct inet6_dev *idev)
216 atomic_dec(&idev->refcnt);
219 static inline void in6_dev_hold(struct inet6_dev *idev)
221 atomic_inc(&idev->refcnt);
224 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
226 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
228 if (atomic_dec_and_test(&ifp->refcnt))
229 inet6_ifa_finish_destroy(ifp);
232 static inline void __in6_ifa_put(struct inet6_ifaddr *ifp)
234 atomic_dec(&ifp->refcnt);
237 static inline void in6_ifa_hold(struct inet6_ifaddr *ifp)
239 atomic_inc(&ifp->refcnt);
244 * compute link-local solicited-node multicast address
247 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
248 struct in6_addr *solicited)
250 ipv6_addr_set(solicited,
251 htonl(0xFF020000), 0,
253 htonl(0xFF000000) | addr->s6_addr32[3]);
256 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
258 return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000);
261 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
263 return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
264 addr->s6_addr32[1] | addr->s6_addr32[2] |
265 (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0;
268 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
270 return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
271 addr->s6_addr32[1] | addr->s6_addr32[2] |
272 (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0;
275 static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
277 return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE);
280 #ifdef CONFIG_PROC_FS
281 extern int if6_proc_init(void);
282 extern void if6_proc_exit(void);