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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 | ||
1da177e4 | 83 | extern int ipv6_dev_get_saddr(struct net_device *dev, |
9acd9f3a | 84 | const struct in6_addr *daddr, |
7cbca67c | 85 | unsigned int srcprefs, |
1da177e4 | 86 | struct in6_addr *saddr); |
95c385b4 NH |
87 | extern int ipv6_get_lladdr(struct net_device *dev, |
88 | struct in6_addr *addr, | |
89 | unsigned char banned_flags); | |
1da177e4 LT |
90 | extern int ipv6_rcv_saddr_equal(const struct sock *sk, |
91 | const struct sock *sk2); | |
92 | extern void addrconf_join_solict(struct net_device *dev, | |
93 | struct in6_addr *addr); | |
94 | extern void addrconf_leave_solict(struct inet6_dev *idev, | |
95 | struct in6_addr *addr); | |
96 | ||
4bed72e4 YH |
97 | static inline unsigned long addrconf_timeout_fixup(u32 timeout, |
98 | unsigned unit) | |
99 | { | |
100 | if (timeout == 0xffffffff) | |
101 | return ~0UL; | |
102 | ||
103 | /* | |
104 | * Avoid arithmetic overflow. | |
105 | * Assuming unit is constant and non-zero, this "if" statement | |
106 | * will go away on 64bit archs. | |
107 | */ | |
108 | if (0xfffffffe > LONG_MAX / unit && timeout > LONG_MAX / unit) | |
109 | return LONG_MAX / unit; | |
110 | ||
111 | return timeout; | |
112 | } | |
113 | ||
114 | static inline int addrconf_finite_timeout(unsigned long timeout) | |
115 | { | |
116 | return ~timeout; | |
117 | } | |
118 | ||
2a8cc6c8 YH |
119 | /* |
120 | * IPv6 Address Label subsystem (addrlabel.c) | |
121 | */ | |
122 | extern int ipv6_addr_label_init(void); | |
123 | extern void ipv6_addr_label_rtnl_register(void); | |
3de23255 BT |
124 | extern u32 ipv6_addr_label(struct net *net, |
125 | const struct in6_addr *addr, | |
2a8cc6c8 YH |
126 | int type, int ifindex); |
127 | ||
1da177e4 LT |
128 | /* |
129 | * multicast prototypes (mcast.c) | |
130 | */ | |
9acd9f3a YH |
131 | extern int ipv6_sock_mc_join(struct sock *sk, int ifindex, |
132 | const struct in6_addr *addr); | |
133 | extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex, | |
134 | const struct in6_addr *addr); | |
1da177e4 | 135 | extern void ipv6_sock_mc_close(struct sock *sk); |
9acd9f3a YH |
136 | extern int inet6_mc_check(struct sock *sk, |
137 | const struct in6_addr *mc_addr, | |
138 | const struct in6_addr *src_addr); | |
1da177e4 | 139 | |
9acd9f3a YH |
140 | extern int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr); |
141 | extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, const struct in6_addr *addr); | |
142 | extern int ipv6_dev_mc_dec(struct net_device *dev, const struct in6_addr *addr); | |
1da177e4 LT |
143 | extern void ipv6_mc_up(struct inet6_dev *idev); |
144 | extern void ipv6_mc_down(struct inet6_dev *idev); | |
145 | extern void ipv6_mc_init_dev(struct inet6_dev *idev); | |
146 | extern void ipv6_mc_destroy_dev(struct inet6_dev *idev); | |
147 | extern void addrconf_dad_failure(struct inet6_ifaddr *ifp); | |
148 | ||
9acd9f3a YH |
149 | extern int ipv6_chk_mcast_addr(struct net_device *dev, |
150 | const struct in6_addr *group, | |
151 | const struct in6_addr *src_addr); | |
1da177e4 LT |
152 | extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr); |
153 | ||
154 | extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len); | |
155 | ||
1da177e4 LT |
156 | /* |
157 | * anycast prototypes (anycast.c) | |
158 | */ | |
159 | extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr); | |
160 | extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr); | |
161 | extern void ipv6_sock_ac_close(struct sock *sk); | |
162 | extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex); | |
163 | ||
164 | extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr); | |
165 | extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr); | |
6ab57e7e DL |
166 | extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev, |
167 | struct in6_addr *addr); | |
1da177e4 LT |
168 | |
169 | ||
170 | /* Device notifier */ | |
171 | extern int register_inet6addr_notifier(struct notifier_block *nb); | |
172 | extern int unregister_inet6addr_notifier(struct notifier_block *nb); | |
173 | ||
174 | static inline struct inet6_dev * | |
175 | __in6_dev_get(struct net_device *dev) | |
176 | { | |
8814c4b5 | 177 | return rcu_dereference(dev->ip6_ptr); |
1da177e4 LT |
178 | } |
179 | ||
1da177e4 LT |
180 | static inline struct inet6_dev * |
181 | in6_dev_get(struct net_device *dev) | |
182 | { | |
183 | struct inet6_dev *idev = NULL; | |
8814c4b5 YH |
184 | rcu_read_lock(); |
185 | idev = __in6_dev_get(dev); | |
1da177e4 LT |
186 | if (idev) |
187 | atomic_inc(&idev->refcnt); | |
8814c4b5 | 188 | rcu_read_unlock(); |
1da177e4 LT |
189 | return idev; |
190 | } | |
191 | ||
192 | extern void in6_dev_finish_destroy(struct inet6_dev *idev); | |
193 | ||
194 | static inline void | |
195 | in6_dev_put(struct inet6_dev *idev) | |
196 | { | |
197 | if (atomic_dec_and_test(&idev->refcnt)) | |
198 | in6_dev_finish_destroy(idev); | |
199 | } | |
200 | ||
201 | #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt) | |
202 | #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt) | |
203 | ||
204 | ||
205 | extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp); | |
206 | ||
207 | static inline void in6_ifa_put(struct inet6_ifaddr *ifp) | |
208 | { | |
209 | if (atomic_dec_and_test(&ifp->refcnt)) | |
210 | inet6_ifa_finish_destroy(ifp); | |
211 | } | |
212 | ||
213 | #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt) | |
214 | #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt) | |
215 | ||
216 | ||
1da177e4 LT |
217 | |
218 | /* | |
219 | * compute link-local solicited-node multicast address | |
220 | */ | |
221 | ||
222 | static inline void addrconf_addr_solict_mult(const struct in6_addr *addr, | |
223 | struct in6_addr *solicited) | |
224 | { | |
225 | ipv6_addr_set(solicited, | |
0e7b8dcd YH |
226 | htonl(0xFF020000), 0, |
227 | htonl(0x1), | |
228 | htonl(0xFF000000) | addr->s6_addr32[3]); | |
1da177e4 LT |
229 | } |
230 | ||
1da177e4 LT |
231 | static inline int ipv6_addr_is_multicast(const struct in6_addr *addr) |
232 | { | |
0e7b8dcd | 233 | return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000); |
1da177e4 LT |
234 | } |
235 | ||
236 | static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr) | |
237 | { | |
fed85383 YH |
238 | return (((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
239 | addr->s6_addr32[1] | addr->s6_addr32[2] | | |
240 | (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0); | |
1da177e4 LT |
241 | } |
242 | ||
243 | static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr) | |
244 | { | |
fed85383 YH |
245 | return (((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
246 | addr->s6_addr32[1] | addr->s6_addr32[2] | | |
247 | (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0); | |
1da177e4 LT |
248 | } |
249 | ||
dfd982ba | 250 | extern int __ipv6_isatap_ifid(u8 *eui, __be32 addr); |
c7dc89c0 FT |
251 | |
252 | static inline int ipv6_addr_is_isatap(const struct in6_addr *addr) | |
253 | { | |
254 | return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE)); | |
255 | } | |
256 | ||
20380731 ACM |
257 | #ifdef CONFIG_PROC_FS |
258 | extern int if6_proc_init(void); | |
259 | extern void if6_proc_exit(void); | |
260 | #endif | |
261 | ||
1da177e4 LT |
262 | #endif |
263 | #endif |