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