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 const struct in6_addr *addr,
80 struct net_device *dev,
83 extern int ipv6_dev_get_saddr(struct net *net,
84 struct net_device *dev,
85 const struct in6_addr *daddr,
86 unsigned int srcprefs,
87 struct in6_addr *saddr);
88 extern int ipv6_get_lladdr(struct net_device *dev,
89 struct in6_addr *addr,
90 unsigned char banned_flags);
91 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
92 const struct sock *sk2);
93 extern void addrconf_join_solict(struct net_device *dev,
94 struct in6_addr *addr);
95 extern void addrconf_leave_solict(struct inet6_dev *idev,
96 struct in6_addr *addr);
98 static inline unsigned long addrconf_timeout_fixup(u32 timeout,
101 if (timeout == 0xffffffff)
105 * Avoid arithmetic overflow.
106 * Assuming unit is constant and non-zero, this "if" statement
107 * will go away on 64bit archs.
109 if (0xfffffffe > LONG_MAX / unit && timeout > LONG_MAX / unit)
110 return LONG_MAX / unit;
115 static inline int addrconf_finite_timeout(unsigned long timeout)
121 * IPv6 Address Label subsystem (addrlabel.c)
123 extern int ipv6_addr_label_init(void);
124 extern void ipv6_addr_label_rtnl_register(void);
125 extern u32 ipv6_addr_label(struct net *net,
126 const struct in6_addr *addr,
127 int type, int ifindex);
130 * multicast prototypes (mcast.c)
132 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
133 const struct in6_addr *addr);
134 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
135 const struct in6_addr *addr);
136 extern void ipv6_sock_mc_close(struct sock *sk);
137 extern int inet6_mc_check(struct sock *sk,
138 const struct in6_addr *mc_addr,
139 const struct in6_addr *src_addr);
141 extern int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr);
142 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, const struct in6_addr *addr);
143 extern int ipv6_dev_mc_dec(struct net_device *dev, const struct in6_addr *addr);
144 extern void ipv6_mc_up(struct inet6_dev *idev);
145 extern void ipv6_mc_down(struct inet6_dev *idev);
146 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
147 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
148 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
150 extern int ipv6_chk_mcast_addr(struct net_device *dev,
151 const struct in6_addr *group,
152 const struct in6_addr *src_addr);
153 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
155 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
158 * anycast prototypes (anycast.c)
160 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
161 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
162 extern void ipv6_sock_ac_close(struct sock *sk);
163 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
165 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
166 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
167 extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
168 struct in6_addr *addr);
171 /* Device notifier */
172 extern int register_inet6addr_notifier(struct notifier_block *nb);
173 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
175 static inline struct inet6_dev *
176 __in6_dev_get(struct net_device *dev)
178 return rcu_dereference(dev->ip6_ptr);
181 static inline struct inet6_dev *
182 in6_dev_get(struct net_device *dev)
184 struct inet6_dev *idev = NULL;
186 idev = __in6_dev_get(dev);
188 atomic_inc(&idev->refcnt);
193 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
196 in6_dev_put(struct inet6_dev *idev)
198 if (atomic_dec_and_test(&idev->refcnt))
199 in6_dev_finish_destroy(idev);
202 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
203 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
206 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
208 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
210 if (atomic_dec_and_test(&ifp->refcnt))
211 inet6_ifa_finish_destroy(ifp);
214 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
215 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
220 * compute link-local solicited-node multicast address
223 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
224 struct in6_addr *solicited)
226 ipv6_addr_set(solicited,
227 htonl(0xFF020000), 0,
229 htonl(0xFF000000) | addr->s6_addr32[3]);
232 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
234 return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000);
237 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
239 return (((addr->s6_addr32[0] ^ htonl(0xff020000)) |
240 addr->s6_addr32[1] | addr->s6_addr32[2] |
241 (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0);
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] | addr->s6_addr32[2] |
248 (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0);
251 extern int __ipv6_isatap_ifid(u8 *eui, __be32 addr);
253 static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
255 return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
258 #ifdef CONFIG_PROC_FS
259 extern int if6_proc_init(void);
260 extern void if6_proc_exit(void);