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1da177e4 LT |
1 | #ifndef _ADDRCONF_H |
2 | #define _ADDRCONF_H | |
3 | ||
4 | #define RETRANS_TIMER HZ | |
5 | ||
6 | #define MAX_RTR_SOLICITATIONS 3 | |
7 | #define RTR_SOLICITATION_INTERVAL (4*HZ) | |
8 | ||
9 | #define MIN_VALID_LIFETIME (2*3600) /* 2 hours */ | |
10 | ||
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) | |
15 | ||
16 | #define ADDR_CHECK_FREQUENCY (120*HZ) | |
17 | ||
18 | #define IPV6_MAX_ADDRESSES 16 | |
19 | ||
6a800d45 PM |
20 | #include <linux/in6.h> |
21 | ||
1da177e4 LT |
22 | struct prefix_info { |
23 | __u8 type; | |
24 | __u8 length; | |
25 | __u8 prefix_len; | |
26 | ||
27 | #if defined(__BIG_ENDIAN_BITFIELD) | |
28 | __u8 onlink : 1, | |
29 | autoconf : 1, | |
30 | reserved : 6; | |
31 | #elif defined(__LITTLE_ENDIAN_BITFIELD) | |
32 | __u8 reserved : 6, | |
33 | autoconf : 1, | |
34 | onlink : 1; | |
35 | #else | |
36 | #error "Please fix <asm/byteorder.h>" | |
37 | #endif | |
e69a4adc AV |
38 | __be32 valid; |
39 | __be32 prefered; | |
40 | __be32 reserved2; | |
1da177e4 LT |
41 | |
42 | struct in6_addr prefix; | |
43 | }; | |
44 | ||
45 | ||
46 | #ifdef __KERNEL__ | |
47 | ||
1da177e4 LT |
48 | #include <linux/netdevice.h> |
49 | #include <net/if_inet6.h> | |
e4553edd | 50 | #include <net/ipv6.h> |
1da177e4 LT |
51 | |
52 | #define IN6_ADDR_HSIZE 16 | |
53 | ||
54 | extern int addrconf_init(void); | |
55 | extern void addrconf_cleanup(void); | |
56 | ||
57 | extern int addrconf_add_ifaddr(void __user *arg); | |
58 | extern int addrconf_del_ifaddr(void __user *arg); | |
59 | extern int addrconf_set_dstaddr(void __user *arg); | |
60 | ||
61 | extern int ipv6_chk_addr(struct in6_addr *addr, | |
62 | struct net_device *dev, | |
63 | int strict); | |
59fbb3a6 | 64 | #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) |
3b9f9a1c | 65 | extern int ipv6_chk_home_addr(struct in6_addr *addr); |
65d4ed92 | 66 | #endif |
1da177e4 LT |
67 | extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr, |
68 | struct net_device *dev, | |
69 | int strict); | |
70 | extern int ipv6_get_saddr(struct dst_entry *dst, | |
71 | struct in6_addr *daddr, | |
72 | struct in6_addr *saddr); | |
73 | extern int ipv6_dev_get_saddr(struct net_device *dev, | |
74 | struct in6_addr *daddr, | |
75 | struct in6_addr *saddr); | |
95c385b4 NH |
76 | extern int ipv6_get_lladdr(struct net_device *dev, |
77 | struct in6_addr *addr, | |
78 | unsigned char banned_flags); | |
1da177e4 LT |
79 | extern int ipv6_rcv_saddr_equal(const struct sock *sk, |
80 | const struct sock *sk2); | |
81 | extern void addrconf_join_solict(struct net_device *dev, | |
82 | struct in6_addr *addr); | |
83 | extern void addrconf_leave_solict(struct inet6_dev *idev, | |
84 | struct in6_addr *addr); | |
85 | ||
86 | /* | |
87 | * multicast prototypes (mcast.c) | |
88 | */ | |
89 | extern int ipv6_sock_mc_join(struct sock *sk, int ifindex, | |
90 | struct in6_addr *addr); | |
91 | extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex, | |
92 | struct in6_addr *addr); | |
93 | extern void ipv6_sock_mc_close(struct sock *sk); | |
94 | extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr, | |
95 | struct in6_addr *src_addr); | |
96 | ||
97 | extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr); | |
98 | extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr); | |
99 | extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr); | |
100 | extern void ipv6_mc_up(struct inet6_dev *idev); | |
101 | extern void ipv6_mc_down(struct inet6_dev *idev); | |
102 | extern void ipv6_mc_init_dev(struct inet6_dev *idev); | |
103 | extern void ipv6_mc_destroy_dev(struct inet6_dev *idev); | |
104 | extern void addrconf_dad_failure(struct inet6_ifaddr *ifp); | |
105 | ||
106 | extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group, | |
107 | struct in6_addr *src_addr); | |
108 | extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr); | |
109 | ||
110 | extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len); | |
111 | ||
112 | extern int ipv6_get_hoplimit(struct net_device *dev); | |
113 | ||
114 | /* | |
115 | * anycast prototypes (anycast.c) | |
116 | */ | |
117 | extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr); | |
118 | extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr); | |
119 | extern void ipv6_sock_ac_close(struct sock *sk); | |
120 | extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex); | |
121 | ||
122 | extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr); | |
123 | extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr); | |
124 | extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr); | |
125 | ||
126 | ||
127 | /* Device notifier */ | |
128 | extern int register_inet6addr_notifier(struct notifier_block *nb); | |
129 | extern int unregister_inet6addr_notifier(struct notifier_block *nb); | |
130 | ||
131 | static inline struct inet6_dev * | |
132 | __in6_dev_get(struct net_device *dev) | |
133 | { | |
8814c4b5 | 134 | return rcu_dereference(dev->ip6_ptr); |
1da177e4 LT |
135 | } |
136 | ||
1da177e4 LT |
137 | static inline struct inet6_dev * |
138 | in6_dev_get(struct net_device *dev) | |
139 | { | |
140 | struct inet6_dev *idev = NULL; | |
8814c4b5 YH |
141 | rcu_read_lock(); |
142 | idev = __in6_dev_get(dev); | |
1da177e4 LT |
143 | if (idev) |
144 | atomic_inc(&idev->refcnt); | |
8814c4b5 | 145 | rcu_read_unlock(); |
1da177e4 LT |
146 | return idev; |
147 | } | |
148 | ||
149 | extern void in6_dev_finish_destroy(struct inet6_dev *idev); | |
150 | ||
151 | static inline void | |
152 | in6_dev_put(struct inet6_dev *idev) | |
153 | { | |
154 | if (atomic_dec_and_test(&idev->refcnt)) | |
155 | in6_dev_finish_destroy(idev); | |
156 | } | |
157 | ||
158 | #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt) | |
159 | #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt) | |
160 | ||
161 | ||
162 | extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp); | |
163 | ||
164 | static inline void in6_ifa_put(struct inet6_ifaddr *ifp) | |
165 | { | |
166 | if (atomic_dec_and_test(&ifp->refcnt)) | |
167 | inet6_ifa_finish_destroy(ifp); | |
168 | } | |
169 | ||
170 | #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt) | |
171 | #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt) | |
172 | ||
173 | ||
174 | extern void addrconf_forwarding_on(void); | |
175 | /* | |
176 | * Hash function taken from net_alias.c | |
177 | */ | |
178 | ||
179 | static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr) | |
180 | { | |
181 | __u32 word; | |
182 | ||
183 | /* | |
184 | * We perform the hash function over the last 64 bits of the address | |
185 | * This will include the IEEE address token on links that support it. | |
186 | */ | |
187 | ||
e69a4adc | 188 | word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]); |
1da177e4 LT |
189 | word ^= (word >> 16); |
190 | word ^= (word >> 8); | |
191 | ||
192 | return ((word ^ (word >> 4)) & 0x0f); | |
193 | } | |
194 | ||
195 | /* | |
196 | * compute link-local solicited-node multicast address | |
197 | */ | |
198 | ||
199 | static inline void addrconf_addr_solict_mult(const struct in6_addr *addr, | |
200 | struct in6_addr *solicited) | |
201 | { | |
202 | ipv6_addr_set(solicited, | |
203 | __constant_htonl(0xFF020000), 0, | |
204 | __constant_htonl(0x1), | |
205 | __constant_htonl(0xFF000000) | addr->s6_addr32[3]); | |
206 | } | |
207 | ||
208 | ||
209 | static inline void ipv6_addr_all_nodes(struct in6_addr *addr) | |
210 | { | |
211 | ipv6_addr_set(addr, | |
212 | __constant_htonl(0xFF020000), 0, 0, | |
213 | __constant_htonl(0x1)); | |
214 | } | |
215 | ||
216 | static inline void ipv6_addr_all_routers(struct in6_addr *addr) | |
217 | { | |
218 | ipv6_addr_set(addr, | |
219 | __constant_htonl(0xFF020000), 0, 0, | |
220 | __constant_htonl(0x2)); | |
221 | } | |
222 | ||
223 | static inline int ipv6_addr_is_multicast(const struct in6_addr *addr) | |
224 | { | |
225 | return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000); | |
226 | } | |
227 | ||
228 | static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr) | |
229 | { | |
230 | return (addr->s6_addr32[0] == htonl(0xff020000) && | |
231 | addr->s6_addr32[1] == 0 && | |
232 | addr->s6_addr32[2] == 0 && | |
233 | addr->s6_addr32[3] == htonl(0x00000001)); | |
234 | } | |
235 | ||
236 | static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr) | |
237 | { | |
238 | return (addr->s6_addr32[0] == htonl(0xff020000) && | |
239 | addr->s6_addr32[1] == 0 && | |
240 | addr->s6_addr32[2] == 0 && | |
241 | addr->s6_addr32[3] == htonl(0x00000002)); | |
242 | } | |
243 | ||
20380731 ACM |
244 | #ifdef CONFIG_PROC_FS |
245 | extern int if6_proc_init(void); | |
246 | extern void if6_proc_exit(void); | |
247 | #endif | |
248 | ||
1da177e4 LT |
249 | #endif |
250 | #endif |