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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 | ||
c7dc89c0 | 20 | #include <linux/in.h> |
6a800d45 PM |
21 | #include <linux/in6.h> |
22 | ||
1da177e4 LT |
23 | struct prefix_info { |
24 | __u8 type; | |
25 | __u8 length; | |
26 | __u8 prefix_len; | |
27 | ||
28 | #if defined(__BIG_ENDIAN_BITFIELD) | |
29 | __u8 onlink : 1, | |
30 | autoconf : 1, | |
31 | reserved : 6; | |
32 | #elif defined(__LITTLE_ENDIAN_BITFIELD) | |
33 | __u8 reserved : 6, | |
34 | autoconf : 1, | |
35 | onlink : 1; | |
36 | #else | |
37 | #error "Please fix <asm/byteorder.h>" | |
38 | #endif | |
e69a4adc AV |
39 | __be32 valid; |
40 | __be32 prefered; | |
41 | __be32 reserved2; | |
1da177e4 LT |
42 | |
43 | struct in6_addr prefix; | |
44 | }; | |
45 | ||
46 | ||
47 | #ifdef __KERNEL__ | |
48 | ||
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 | ||
bfeade08 DL |
62 | extern int ipv6_chk_addr(struct net *net, |
63 | struct in6_addr *addr, | |
1da177e4 LT |
64 | struct net_device *dev, |
65 | int strict); | |
bfeade08 | 66 | |
59fbb3a6 | 67 | #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) |
389f6612 DL |
68 | extern int ipv6_chk_home_addr(struct net *net, |
69 | struct in6_addr *addr); | |
65d4ed92 | 70 | #endif |
1cab3da6 DL |
71 | extern struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, |
72 | struct in6_addr *addr, | |
73 | struct net_device *dev, | |
74 | int strict); | |
75 | ||
1da177e4 LT |
76 | extern int ipv6_get_saddr(struct dst_entry *dst, |
77 | struct in6_addr *daddr, | |
78 | struct in6_addr *saddr); | |
79 | extern int ipv6_dev_get_saddr(struct net_device *dev, | |
80 | struct in6_addr *daddr, | |
81 | struct in6_addr *saddr); | |
95c385b4 NH |
82 | extern int ipv6_get_lladdr(struct net_device *dev, |
83 | struct in6_addr *addr, | |
84 | unsigned char banned_flags); | |
1da177e4 LT |
85 | extern int ipv6_rcv_saddr_equal(const struct sock *sk, |
86 | const struct sock *sk2); | |
87 | extern void addrconf_join_solict(struct net_device *dev, | |
88 | struct in6_addr *addr); | |
89 | extern void addrconf_leave_solict(struct inet6_dev *idev, | |
90 | struct in6_addr *addr); | |
91 | ||
2a8cc6c8 YH |
92 | /* |
93 | * IPv6 Address Label subsystem (addrlabel.c) | |
94 | */ | |
95 | extern int ipv6_addr_label_init(void); | |
96 | extern void ipv6_addr_label_rtnl_register(void); | |
97 | extern u32 ipv6_addr_label(const struct in6_addr *addr, | |
98 | int type, int ifindex); | |
99 | ||
1da177e4 LT |
100 | /* |
101 | * multicast prototypes (mcast.c) | |
102 | */ | |
103 | extern int ipv6_sock_mc_join(struct sock *sk, int ifindex, | |
104 | struct in6_addr *addr); | |
105 | extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex, | |
106 | struct in6_addr *addr); | |
107 | extern void ipv6_sock_mc_close(struct sock *sk); | |
108 | extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr, | |
109 | struct in6_addr *src_addr); | |
110 | ||
111 | extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr); | |
112 | extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr); | |
113 | extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr); | |
114 | extern void ipv6_mc_up(struct inet6_dev *idev); | |
115 | extern void ipv6_mc_down(struct inet6_dev *idev); | |
116 | extern void ipv6_mc_init_dev(struct inet6_dev *idev); | |
117 | extern void ipv6_mc_destroy_dev(struct inet6_dev *idev); | |
118 | extern void addrconf_dad_failure(struct inet6_ifaddr *ifp); | |
119 | ||
120 | extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group, | |
121 | struct in6_addr *src_addr); | |
122 | extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr); | |
123 | ||
124 | extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len); | |
125 | ||
126 | extern int ipv6_get_hoplimit(struct net_device *dev); | |
127 | ||
128 | /* | |
129 | * anycast prototypes (anycast.c) | |
130 | */ | |
131 | extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr); | |
132 | extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr); | |
133 | extern void ipv6_sock_ac_close(struct sock *sk); | |
134 | extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex); | |
135 | ||
136 | extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr); | |
137 | extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr); | |
138 | extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr); | |
139 | ||
140 | ||
141 | /* Device notifier */ | |
142 | extern int register_inet6addr_notifier(struct notifier_block *nb); | |
143 | extern int unregister_inet6addr_notifier(struct notifier_block *nb); | |
144 | ||
145 | static inline struct inet6_dev * | |
146 | __in6_dev_get(struct net_device *dev) | |
147 | { | |
8814c4b5 | 148 | return rcu_dereference(dev->ip6_ptr); |
1da177e4 LT |
149 | } |
150 | ||
1da177e4 LT |
151 | static inline struct inet6_dev * |
152 | in6_dev_get(struct net_device *dev) | |
153 | { | |
154 | struct inet6_dev *idev = NULL; | |
8814c4b5 YH |
155 | rcu_read_lock(); |
156 | idev = __in6_dev_get(dev); | |
1da177e4 LT |
157 | if (idev) |
158 | atomic_inc(&idev->refcnt); | |
8814c4b5 | 159 | rcu_read_unlock(); |
1da177e4 LT |
160 | return idev; |
161 | } | |
162 | ||
163 | extern void in6_dev_finish_destroy(struct inet6_dev *idev); | |
164 | ||
165 | static inline void | |
166 | in6_dev_put(struct inet6_dev *idev) | |
167 | { | |
168 | if (atomic_dec_and_test(&idev->refcnt)) | |
169 | in6_dev_finish_destroy(idev); | |
170 | } | |
171 | ||
172 | #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt) | |
173 | #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt) | |
174 | ||
175 | ||
176 | extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp); | |
177 | ||
178 | static inline void in6_ifa_put(struct inet6_ifaddr *ifp) | |
179 | { | |
180 | if (atomic_dec_and_test(&ifp->refcnt)) | |
181 | inet6_ifa_finish_destroy(ifp); | |
182 | } | |
183 | ||
184 | #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt) | |
185 | #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt) | |
186 | ||
187 | ||
188 | extern void addrconf_forwarding_on(void); | |
189 | /* | |
190 | * Hash function taken from net_alias.c | |
191 | */ | |
192 | ||
193 | static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr) | |
194 | { | |
195 | __u32 word; | |
196 | ||
197 | /* | |
198 | * We perform the hash function over the last 64 bits of the address | |
199 | * This will include the IEEE address token on links that support it. | |
200 | */ | |
201 | ||
e69a4adc | 202 | word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]); |
1da177e4 LT |
203 | word ^= (word >> 16); |
204 | word ^= (word >> 8); | |
205 | ||
206 | return ((word ^ (word >> 4)) & 0x0f); | |
207 | } | |
208 | ||
209 | /* | |
210 | * compute link-local solicited-node multicast address | |
211 | */ | |
212 | ||
213 | static inline void addrconf_addr_solict_mult(const struct in6_addr *addr, | |
214 | struct in6_addr *solicited) | |
215 | { | |
216 | ipv6_addr_set(solicited, | |
217 | __constant_htonl(0xFF020000), 0, | |
218 | __constant_htonl(0x1), | |
219 | __constant_htonl(0xFF000000) | addr->s6_addr32[3]); | |
220 | } | |
221 | ||
222 | ||
223 | static inline void ipv6_addr_all_nodes(struct in6_addr *addr) | |
224 | { | |
225 | ipv6_addr_set(addr, | |
226 | __constant_htonl(0xFF020000), 0, 0, | |
227 | __constant_htonl(0x1)); | |
228 | } | |
229 | ||
230 | static inline void ipv6_addr_all_routers(struct in6_addr *addr) | |
231 | { | |
232 | ipv6_addr_set(addr, | |
233 | __constant_htonl(0xFF020000), 0, 0, | |
234 | __constant_htonl(0x2)); | |
235 | } | |
236 | ||
237 | static inline int ipv6_addr_is_multicast(const struct in6_addr *addr) | |
238 | { | |
239 | return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000); | |
240 | } | |
241 | ||
242 | static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr) | |
243 | { | |
244 | return (addr->s6_addr32[0] == htonl(0xff020000) && | |
245 | addr->s6_addr32[1] == 0 && | |
246 | addr->s6_addr32[2] == 0 && | |
247 | addr->s6_addr32[3] == htonl(0x00000001)); | |
248 | } | |
249 | ||
250 | static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr) | |
251 | { | |
252 | return (addr->s6_addr32[0] == htonl(0xff020000) && | |
253 | addr->s6_addr32[1] == 0 && | |
254 | addr->s6_addr32[2] == 0 && | |
255 | addr->s6_addr32[3] == htonl(0x00000002)); | |
256 | } | |
257 | ||
c7dc89c0 FT |
258 | static inline int ipv6_isatap_eui64(u8 *eui, __be32 addr) |
259 | { | |
3db8cda3 JP |
260 | eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) || |
261 | ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) || | |
262 | ipv4_is_private_172(addr) || ipv4_is_test_192(addr) || | |
263 | ipv4_is_anycast_6to4(addr) || ipv4_is_private_192(addr) || | |
264 | ipv4_is_test_198(addr) || ipv4_is_multicast(addr) || | |
1e637c74 | 265 | ipv4_is_lbcast(addr)) ? 0x00 : 0x02; |
c7dc89c0 FT |
266 | eui[1] = 0; |
267 | eui[2] = 0x5E; | |
268 | eui[3] = 0xFE; | |
269 | memcpy (eui+4, &addr, 4); | |
270 | return 0; | |
271 | } | |
272 | ||
273 | static inline int ipv6_addr_is_isatap(const struct in6_addr *addr) | |
274 | { | |
275 | return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE)); | |
276 | } | |
277 | ||
20380731 ACM |
278 | #ifdef CONFIG_PROC_FS |
279 | extern int if6_proc_init(void); | |
280 | extern void if6_proc_exit(void); | |
281 | #endif | |
282 | ||
1da177e4 LT |
283 | #endif |
284 | #endif |