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Commit | Line | Data |
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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 | ||
af284937 DL |
58 | extern int addrconf_add_ifaddr(struct net *net, |
59 | void __user *arg); | |
60 | extern int addrconf_del_ifaddr(struct net *net, | |
61 | void __user *arg); | |
62 | extern int addrconf_set_dstaddr(struct net *net, | |
63 | void __user *arg); | |
1da177e4 | 64 | |
bfeade08 DL |
65 | extern int ipv6_chk_addr(struct net *net, |
66 | struct in6_addr *addr, | |
1da177e4 LT |
67 | struct net_device *dev, |
68 | int strict); | |
bfeade08 | 69 | |
59fbb3a6 | 70 | #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) |
389f6612 DL |
71 | extern int ipv6_chk_home_addr(struct net *net, |
72 | struct in6_addr *addr); | |
65d4ed92 | 73 | #endif |
52eeeb84 YH |
74 | |
75 | extern int ipv6_chk_prefix(struct in6_addr *addr, | |
76 | struct net_device *dev); | |
77 | ||
1cab3da6 | 78 | extern struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, |
9acd9f3a | 79 | const struct in6_addr *addr, |
1cab3da6 DL |
80 | struct net_device *dev, |
81 | int strict); | |
82 | ||
191cd582 BH |
83 | extern int ipv6_dev_get_saddr(struct net *net, |
84 | struct net_device *dev, | |
9acd9f3a | 85 | const struct in6_addr *daddr, |
7cbca67c | 86 | unsigned int srcprefs, |
1da177e4 | 87 | struct in6_addr *saddr); |
95c385b4 NH |
88 | extern int ipv6_get_lladdr(struct net_device *dev, |
89 | struct in6_addr *addr, | |
90 | unsigned char banned_flags); | |
b2f5e7cd VY |
91 | extern int ipv6_rcv_saddr_equal(const struct sock *sk, |
92 | const struct sock *sk2); | |
1da177e4 LT |
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); | |
97 | ||
4bed72e4 YH |
98 | static inline unsigned long addrconf_timeout_fixup(u32 timeout, |
99 | unsigned unit) | |
100 | { | |
101 | if (timeout == 0xffffffff) | |
102 | return ~0UL; | |
103 | ||
104 | /* | |
105 | * Avoid arithmetic overflow. | |
106 | * Assuming unit is constant and non-zero, this "if" statement | |
107 | * will go away on 64bit archs. | |
108 | */ | |
109 | if (0xfffffffe > LONG_MAX / unit && timeout > LONG_MAX / unit) | |
110 | return LONG_MAX / unit; | |
111 | ||
112 | return timeout; | |
113 | } | |
114 | ||
115 | static inline int addrconf_finite_timeout(unsigned long timeout) | |
116 | { | |
117 | return ~timeout; | |
118 | } | |
119 | ||
2a8cc6c8 YH |
120 | /* |
121 | * IPv6 Address Label subsystem (addrlabel.c) | |
122 | */ | |
123 | extern int ipv6_addr_label_init(void); | |
124 | extern void ipv6_addr_label_rtnl_register(void); | |
3de23255 BT |
125 | extern u32 ipv6_addr_label(struct net *net, |
126 | const struct in6_addr *addr, | |
2a8cc6c8 YH |
127 | int type, int ifindex); |
128 | ||
1da177e4 LT |
129 | /* |
130 | * multicast prototypes (mcast.c) | |
131 | */ | |
9acd9f3a YH |
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); | |
1da177e4 | 136 | extern void ipv6_sock_mc_close(struct sock *sk); |
9acd9f3a YH |
137 | extern int inet6_mc_check(struct sock *sk, |
138 | const struct in6_addr *mc_addr, | |
139 | const struct in6_addr *src_addr); | |
1da177e4 | 140 | |
9acd9f3a YH |
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); | |
1da177e4 LT |
144 | extern void ipv6_mc_up(struct inet6_dev *idev); |
145 | extern void ipv6_mc_down(struct inet6_dev *idev); | |
75c78500 MS |
146 | extern void ipv6_mc_unmap(struct inet6_dev *idev); |
147 | extern void ipv6_mc_remap(struct inet6_dev *idev); | |
1da177e4 LT |
148 | extern void ipv6_mc_init_dev(struct inet6_dev *idev); |
149 | extern void ipv6_mc_destroy_dev(struct inet6_dev *idev); | |
150 | extern void addrconf_dad_failure(struct inet6_ifaddr *ifp); | |
151 | ||
9acd9f3a YH |
152 | extern int ipv6_chk_mcast_addr(struct net_device *dev, |
153 | const struct in6_addr *group, | |
154 | const struct in6_addr *src_addr); | |
1da177e4 LT |
155 | extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr); |
156 | ||
157 | extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len); | |
158 | ||
1da177e4 LT |
159 | /* |
160 | * anycast prototypes (anycast.c) | |
161 | */ | |
162 | extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr); | |
163 | extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr); | |
164 | extern void ipv6_sock_ac_close(struct sock *sk); | |
165 | extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex); | |
166 | ||
167 | extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr); | |
168 | extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr); | |
6ab57e7e DL |
169 | extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev, |
170 | struct in6_addr *addr); | |
1da177e4 LT |
171 | |
172 | ||
173 | /* Device notifier */ | |
174 | extern int register_inet6addr_notifier(struct notifier_block *nb); | |
175 | extern int unregister_inet6addr_notifier(struct notifier_block *nb); | |
176 | ||
48daa3bb ED |
177 | /** |
178 | * __in6_dev_get - get inet6_dev pointer from netdevice | |
179 | * @dev: network device | |
180 | * | |
181 | * Caller must hold rcu_read_lock or RTNL, because this function | |
182 | * does not take a reference on the inet6_dev. | |
183 | */ | |
184 | static inline struct inet6_dev *__in6_dev_get(const struct net_device *dev) | |
1da177e4 | 185 | { |
48daa3bb | 186 | return rcu_dereference_rtnl(dev->ip6_ptr); |
1da177e4 LT |
187 | } |
188 | ||
48daa3bb ED |
189 | /** |
190 | * in6_dev_get - get inet6_dev pointer from netdevice | |
191 | * @dev: network device | |
192 | * | |
193 | * This version can be used in any context, and takes a reference | |
194 | * on the inet6_dev. Callers must use in6_dev_put() later to | |
195 | * release this reference. | |
196 | */ | |
197 | static inline struct inet6_dev *in6_dev_get(const struct net_device *dev) | |
1da177e4 | 198 | { |
48daa3bb ED |
199 | struct inet6_dev *idev; |
200 | ||
8814c4b5 | 201 | rcu_read_lock(); |
48daa3bb | 202 | idev = rcu_dereference(dev->ip6_ptr); |
1da177e4 LT |
203 | if (idev) |
204 | atomic_inc(&idev->refcnt); | |
8814c4b5 | 205 | rcu_read_unlock(); |
1da177e4 LT |
206 | return idev; |
207 | } | |
208 | ||
209 | extern void in6_dev_finish_destroy(struct inet6_dev *idev); | |
210 | ||
48daa3bb | 211 | static inline void in6_dev_put(struct inet6_dev *idev) |
1da177e4 LT |
212 | { |
213 | if (atomic_dec_and_test(&idev->refcnt)) | |
214 | in6_dev_finish_destroy(idev); | |
215 | } | |
216 | ||
48daa3bb ED |
217 | static inline void __in6_dev_put(struct inet6_dev *idev) |
218 | { | |
219 | atomic_dec(&idev->refcnt); | |
220 | } | |
1da177e4 | 221 | |
48daa3bb ED |
222 | static inline void in6_dev_hold(struct inet6_dev *idev) |
223 | { | |
224 | atomic_inc(&idev->refcnt); | |
225 | } | |
1da177e4 LT |
226 | |
227 | extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp); | |
228 | ||
229 | static inline void in6_ifa_put(struct inet6_ifaddr *ifp) | |
230 | { | |
231 | if (atomic_dec_and_test(&ifp->refcnt)) | |
232 | inet6_ifa_finish_destroy(ifp); | |
233 | } | |
234 | ||
48daa3bb ED |
235 | static inline void __in6_ifa_put(struct inet6_ifaddr *ifp) |
236 | { | |
237 | atomic_dec(&ifp->refcnt); | |
238 | } | |
1da177e4 | 239 | |
48daa3bb ED |
240 | static inline void in6_ifa_hold(struct inet6_ifaddr *ifp) |
241 | { | |
242 | atomic_inc(&ifp->refcnt); | |
243 | } | |
1da177e4 | 244 | |
1da177e4 LT |
245 | |
246 | /* | |
247 | * compute link-local solicited-node multicast address | |
248 | */ | |
249 | ||
250 | static inline void addrconf_addr_solict_mult(const struct in6_addr *addr, | |
251 | struct in6_addr *solicited) | |
252 | { | |
253 | ipv6_addr_set(solicited, | |
0e7b8dcd YH |
254 | htonl(0xFF020000), 0, |
255 | htonl(0x1), | |
256 | htonl(0xFF000000) | addr->s6_addr32[3]); | |
1da177e4 LT |
257 | } |
258 | ||
1da177e4 LT |
259 | static inline int ipv6_addr_is_multicast(const struct in6_addr *addr) |
260 | { | |
0e7b8dcd | 261 | return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000); |
1da177e4 LT |
262 | } |
263 | ||
264 | static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr) | |
265 | { | |
48daa3bb | 266 | return ((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
fed85383 | 267 | addr->s6_addr32[1] | addr->s6_addr32[2] | |
48daa3bb | 268 | (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0; |
1da177e4 LT |
269 | } |
270 | ||
271 | static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr) | |
272 | { | |
48daa3bb | 273 | return ((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
fed85383 | 274 | addr->s6_addr32[1] | addr->s6_addr32[2] | |
48daa3bb | 275 | (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0; |
1da177e4 LT |
276 | } |
277 | ||
dfd982ba | 278 | extern int __ipv6_isatap_ifid(u8 *eui, __be32 addr); |
c7dc89c0 FT |
279 | |
280 | static inline int ipv6_addr_is_isatap(const struct in6_addr *addr) | |
281 | { | |
48daa3bb | 282 | return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE); |
c7dc89c0 FT |
283 | } |
284 | ||
20380731 ACM |
285 | #ifdef CONFIG_PROC_FS |
286 | extern int if6_proc_init(void); | |
287 | extern void if6_proc_exit(void); | |
288 | #endif | |
289 | ||
1da177e4 LT |
290 | #endif |
291 | #endif |