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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); | |
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); | |
149 | ||
9acd9f3a YH |
150 | extern int ipv6_chk_mcast_addr(struct net_device *dev, |
151 | const struct in6_addr *group, | |
152 | const struct in6_addr *src_addr); | |
1da177e4 LT |
153 | extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr); |
154 | ||
155 | extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len); | |
156 | ||
1da177e4 LT |
157 | /* |
158 | * anycast prototypes (anycast.c) | |
159 | */ | |
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); | |
164 | ||
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); | |
6ab57e7e DL |
167 | extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev, |
168 | struct in6_addr *addr); | |
1da177e4 LT |
169 | |
170 | ||
171 | /* Device notifier */ | |
172 | extern int register_inet6addr_notifier(struct notifier_block *nb); | |
173 | extern int unregister_inet6addr_notifier(struct notifier_block *nb); | |
174 | ||
175 | static inline struct inet6_dev * | |
176 | __in6_dev_get(struct net_device *dev) | |
177 | { | |
8814c4b5 | 178 | return rcu_dereference(dev->ip6_ptr); |
1da177e4 LT |
179 | } |
180 | ||
1da177e4 LT |
181 | static inline struct inet6_dev * |
182 | in6_dev_get(struct net_device *dev) | |
183 | { | |
184 | struct inet6_dev *idev = NULL; | |
8814c4b5 YH |
185 | rcu_read_lock(); |
186 | idev = __in6_dev_get(dev); | |
1da177e4 LT |
187 | if (idev) |
188 | atomic_inc(&idev->refcnt); | |
8814c4b5 | 189 | rcu_read_unlock(); |
1da177e4 LT |
190 | return idev; |
191 | } | |
192 | ||
193 | extern void in6_dev_finish_destroy(struct inet6_dev *idev); | |
194 | ||
195 | static inline void | |
196 | in6_dev_put(struct inet6_dev *idev) | |
197 | { | |
198 | if (atomic_dec_and_test(&idev->refcnt)) | |
199 | in6_dev_finish_destroy(idev); | |
200 | } | |
201 | ||
202 | #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt) | |
203 | #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt) | |
204 | ||
205 | ||
206 | extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp); | |
207 | ||
208 | static inline void in6_ifa_put(struct inet6_ifaddr *ifp) | |
209 | { | |
210 | if (atomic_dec_and_test(&ifp->refcnt)) | |
211 | inet6_ifa_finish_destroy(ifp); | |
212 | } | |
213 | ||
214 | #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt) | |
215 | #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt) | |
216 | ||
217 | ||
1da177e4 LT |
218 | |
219 | /* | |
220 | * compute link-local solicited-node multicast address | |
221 | */ | |
222 | ||
223 | static inline void addrconf_addr_solict_mult(const struct in6_addr *addr, | |
224 | struct in6_addr *solicited) | |
225 | { | |
226 | ipv6_addr_set(solicited, | |
0e7b8dcd YH |
227 | htonl(0xFF020000), 0, |
228 | htonl(0x1), | |
229 | htonl(0xFF000000) | addr->s6_addr32[3]); | |
1da177e4 LT |
230 | } |
231 | ||
1da177e4 LT |
232 | static inline int ipv6_addr_is_multicast(const struct in6_addr *addr) |
233 | { | |
0e7b8dcd | 234 | return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000); |
1da177e4 LT |
235 | } |
236 | ||
237 | static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr) | |
238 | { | |
fed85383 YH |
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); | |
1da177e4 LT |
242 | } |
243 | ||
244 | static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr) | |
245 | { | |
fed85383 YH |
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); | |
1da177e4 LT |
249 | } |
250 | ||
dfd982ba | 251 | extern int __ipv6_isatap_ifid(u8 *eui, __be32 addr); |
c7dc89c0 FT |
252 | |
253 | static inline int ipv6_addr_is_isatap(const struct in6_addr *addr) | |
254 | { | |
255 | return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE)); | |
256 | } | |
257 | ||
20380731 ACM |
258 | #ifdef CONFIG_PROC_FS |
259 | extern int if6_proc_init(void); | |
260 | extern void if6_proc_exit(void); | |
261 | #endif | |
262 | ||
1da177e4 LT |
263 | #endif |
264 | #endif |